1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * This is the new netlink-based wireless configuration interface.
4 *
5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2014 Intel Mobile Communications GmbH
7 * Copyright 2015-2017 Intel Deutschland GmbH
8 * Copyright (C) 2018-2021 Intel Corporation
9 */
10
11 #include <linux/if.h>
12 #include <linux/module.h>
13 #include <linux/err.h>
14 #include <linux/slab.h>
15 #include <linux/list.h>
16 #include <linux/if_ether.h>
17 #include <linux/ieee80211.h>
18 #include <linux/nl80211.h>
19 #include <linux/rtnetlink.h>
20 #include <linux/netlink.h>
21 #include <linux/nospec.h>
22 #include <linux/etherdevice.h>
23 #include <linux/if_vlan.h>
24 #include <net/net_namespace.h>
25 #include <net/genetlink.h>
26 #include <net/cfg80211.h>
27 #include <net/sock.h>
28 #include <net/inet_connection_sock.h>
29 #include "core.h"
30 #include "nl80211.h"
31 #include "reg.h"
32 #include "rdev-ops.h"
33
34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
35 struct genl_info *info,
36 struct cfg80211_crypto_settings *settings,
37 int cipher_limit);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam;
41
42 /* multicast groups */
43 enum nl80211_multicast_groups {
44 NL80211_MCGRP_CONFIG,
45 NL80211_MCGRP_SCAN,
46 NL80211_MCGRP_REGULATORY,
47 NL80211_MCGRP_MLME,
48 NL80211_MCGRP_VENDOR,
49 NL80211_MCGRP_NAN,
50 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
51 };
52
53 static const struct genl_multicast_group nl80211_mcgrps[] = {
54 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
55 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
56 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
57 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
58 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
59 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
60 #ifdef CONFIG_NL80211_TESTMODE
61 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
62 #endif
63 };
64
65 /* returns ERR_PTR values */
66 static struct wireless_dev *
__cfg80211_wdev_from_attrs(struct net * netns,struct nlattr ** attrs)67 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
68 {
69 struct cfg80211_registered_device *rdev;
70 struct wireless_dev *result = NULL;
71 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
72 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
73 u64 wdev_id;
74 int wiphy_idx = -1;
75 int ifidx = -1;
76
77 ASSERT_RTNL();
78
79 if (!have_ifidx && !have_wdev_id)
80 return ERR_PTR(-EINVAL);
81
82 if (have_ifidx)
83 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
84 if (have_wdev_id) {
85 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
86 wiphy_idx = wdev_id >> 32;
87 }
88
89 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
90 struct wireless_dev *wdev;
91
92 if (wiphy_net(&rdev->wiphy) != netns)
93 continue;
94
95 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
96 continue;
97
98 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
99 if (have_ifidx && wdev->netdev &&
100 wdev->netdev->ifindex == ifidx) {
101 result = wdev;
102 break;
103 }
104 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
105 result = wdev;
106 break;
107 }
108 }
109
110 if (result)
111 break;
112 }
113
114 if (result)
115 return result;
116 return ERR_PTR(-ENODEV);
117 }
118
119 static struct cfg80211_registered_device *
__cfg80211_rdev_from_attrs(struct net * netns,struct nlattr ** attrs)120 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
121 {
122 struct cfg80211_registered_device *rdev = NULL, *tmp;
123 struct net_device *netdev;
124
125 ASSERT_RTNL();
126
127 if (!attrs[NL80211_ATTR_WIPHY] &&
128 !attrs[NL80211_ATTR_IFINDEX] &&
129 !attrs[NL80211_ATTR_WDEV])
130 return ERR_PTR(-EINVAL);
131
132 if (attrs[NL80211_ATTR_WIPHY])
133 rdev = cfg80211_rdev_by_wiphy_idx(
134 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
135
136 if (attrs[NL80211_ATTR_WDEV]) {
137 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
138 struct wireless_dev *wdev;
139 bool found = false;
140
141 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
142 if (tmp) {
143 /* make sure wdev exists */
144 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
145 if (wdev->identifier != (u32)wdev_id)
146 continue;
147 found = true;
148 break;
149 }
150
151 if (!found)
152 tmp = NULL;
153
154 if (rdev && tmp != rdev)
155 return ERR_PTR(-EINVAL);
156 rdev = tmp;
157 }
158 }
159
160 if (attrs[NL80211_ATTR_IFINDEX]) {
161 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
162
163 netdev = __dev_get_by_index(netns, ifindex);
164 if (netdev) {
165 if (netdev->ieee80211_ptr)
166 tmp = wiphy_to_rdev(
167 netdev->ieee80211_ptr->wiphy);
168 else
169 tmp = NULL;
170
171 /* not wireless device -- return error */
172 if (!tmp)
173 return ERR_PTR(-EINVAL);
174
175 /* mismatch -- return error */
176 if (rdev && tmp != rdev)
177 return ERR_PTR(-EINVAL);
178
179 rdev = tmp;
180 }
181 }
182
183 if (!rdev)
184 return ERR_PTR(-ENODEV);
185
186 if (netns != wiphy_net(&rdev->wiphy))
187 return ERR_PTR(-ENODEV);
188
189 return rdev;
190 }
191
192 /*
193 * This function returns a pointer to the driver
194 * that the genl_info item that is passed refers to.
195 *
196 * The result of this can be a PTR_ERR and hence must
197 * be checked with IS_ERR() for errors.
198 */
199 static struct cfg80211_registered_device *
cfg80211_get_dev_from_info(struct net * netns,struct genl_info * info)200 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
201 {
202 return __cfg80211_rdev_from_attrs(netns, info->attrs);
203 }
204
validate_beacon_head(const struct nlattr * attr,struct netlink_ext_ack * extack)205 static int validate_beacon_head(const struct nlattr *attr,
206 struct netlink_ext_ack *extack)
207 {
208 const u8 *data = nla_data(attr);
209 unsigned int len = nla_len(attr);
210 const struct element *elem;
211 const struct ieee80211_mgmt *mgmt = (void *)data;
212 unsigned int fixedlen, hdrlen;
213 bool s1g_bcn;
214
215 if (len < offsetofend(typeof(*mgmt), frame_control))
216 goto err;
217
218 s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
219 if (s1g_bcn) {
220 fixedlen = offsetof(struct ieee80211_ext,
221 u.s1g_beacon.variable);
222 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
223 } else {
224 fixedlen = offsetof(struct ieee80211_mgmt,
225 u.beacon.variable);
226 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
227 }
228
229 if (len < fixedlen)
230 goto err;
231
232 if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
233 goto err;
234
235 data += fixedlen;
236 len -= fixedlen;
237
238 for_each_element(elem, data, len) {
239 /* nothing */
240 }
241
242 if (for_each_element_completed(elem, data, len))
243 return 0;
244
245 err:
246 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
247 return -EINVAL;
248 }
249
validate_ie_attr(const struct nlattr * attr,struct netlink_ext_ack * extack)250 static int validate_ie_attr(const struct nlattr *attr,
251 struct netlink_ext_ack *extack)
252 {
253 const u8 *data = nla_data(attr);
254 unsigned int len = nla_len(attr);
255 const struct element *elem;
256
257 for_each_element(elem, data, len) {
258 /* nothing */
259 }
260
261 if (for_each_element_completed(elem, data, len))
262 return 0;
263
264 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
265 return -EINVAL;
266 }
267
268 /* policy for the attributes */
269 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
270
271 static const struct nla_policy
272 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
273 [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
274 [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
275 .len = U8_MAX },
276 [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
277 .len = U8_MAX },
278 };
279
280 static const struct nla_policy
281 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
282 [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
283 [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
284 [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
285 NLA_POLICY_MAX(NLA_U8, 15),
286 [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
287 [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
288 NLA_POLICY_MAX(NLA_U8, 15),
289 [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
290 NLA_POLICY_MAX(NLA_U8, 31),
291 [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
292 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
293 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
294 [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
295 [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
296 };
297
298 static const struct nla_policy
299 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
300 [NL80211_PMSR_TYPE_FTM] =
301 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
302 };
303
304 static const struct nla_policy
305 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
306 [NL80211_PMSR_REQ_ATTR_DATA] =
307 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
308 [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
309 };
310
311 static const struct nla_policy
312 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
313 [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
314 [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
315 [NL80211_PMSR_PEER_ATTR_REQ] =
316 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
317 [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
318 };
319
320 static const struct nla_policy
321 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
322 [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
323 [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
324 [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
325 [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
326 [NL80211_PMSR_ATTR_PEERS] =
327 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
328 };
329
330 static const struct nla_policy
331 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
332 [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
333 NLA_POLICY_RANGE(NLA_U8, 1, 20),
334 [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
335 NLA_POLICY_RANGE(NLA_U8, 1, 20),
336 [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
337 NLA_POLICY_RANGE(NLA_U8, 1, 20),
338 [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
339 NLA_POLICY_EXACT_LEN(8),
340 [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
341 NLA_POLICY_EXACT_LEN(8),
342 [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
343 };
344
345 static const struct nla_policy
346 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
347 [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
348 [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
349 [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
350 };
351
352 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
353 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
354 .len = NL80211_MAX_SUPP_RATES },
355 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
356 .len = NL80211_MAX_SUPP_HT_RATES },
357 [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
358 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
359 [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
360 [NL80211_TXRATE_HE_GI] = NLA_POLICY_RANGE(NLA_U8,
361 NL80211_RATE_INFO_HE_GI_0_8,
362 NL80211_RATE_INFO_HE_GI_3_2),
363 [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
364 NL80211_RATE_INFO_HE_1XLTF,
365 NL80211_RATE_INFO_HE_4XLTF),
366 };
367
368 static const struct nla_policy
369 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
370 [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
371 [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
372 [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
373 [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
374 [NL80211_TID_CONFIG_ATTR_NOACK] =
375 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
376 [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
377 [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
378 [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
379 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
380 [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
381 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
382 [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
383 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
384 [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
385 NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
386 [NL80211_TID_CONFIG_ATTR_TX_RATE] =
387 NLA_POLICY_NESTED(nl80211_txattr_policy),
388 };
389
390 static const struct nla_policy
391 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
392 [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
393 [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
394 NLA_POLICY_RANGE(NLA_BINARY,
395 NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
396 IEEE80211_MAX_DATA_LEN),
397 };
398
399 static const struct nla_policy
400 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
401 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
402 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
403 .len = IEEE80211_MAX_DATA_LEN }
404 };
405
406 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
407 [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
408 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
409 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
410 .len = 20-1 },
411 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
412
413 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
414 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
415 [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
416 NL80211_EDMG_CHANNELS_MIN,
417 NL80211_EDMG_CHANNELS_MAX),
418 [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
419 NL80211_EDMG_BW_CONFIG_MIN,
420 NL80211_EDMG_BW_CONFIG_MAX),
421
422 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
423 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
424 [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
425 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
426
427 [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
428 [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
429 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
430 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
431 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
432 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
433
434 [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
435 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
436 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
437
438 [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
439 [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
440
441 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
442 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
443 .len = WLAN_MAX_KEY_LEN },
444 [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
445 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
446 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
447 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
448 [NL80211_ATTR_KEY_TYPE] =
449 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
450
451 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
452 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
453 [NL80211_ATTR_BEACON_HEAD] =
454 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
455 IEEE80211_MAX_DATA_LEN),
456 [NL80211_ATTR_BEACON_TAIL] =
457 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
458 IEEE80211_MAX_DATA_LEN),
459 [NL80211_ATTR_STA_AID] =
460 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
461 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
462 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
463 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
464 .len = NL80211_MAX_SUPP_RATES },
465 [NL80211_ATTR_STA_PLINK_ACTION] =
466 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
467 [NL80211_ATTR_STA_TX_POWER_SETTING] =
468 NLA_POLICY_RANGE(NLA_U8,
469 NL80211_TX_POWER_AUTOMATIC,
470 NL80211_TX_POWER_FIXED),
471 [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
472 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
473 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
474 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
475 .len = IEEE80211_MAX_MESH_ID_LEN },
476 [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
477
478 /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
479 [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
480 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
481
482 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
483 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
484 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
485 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
486 .len = NL80211_MAX_SUPP_RATES },
487 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
488
489 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
490 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
491
492 [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
493
494 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
495 [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
496 validate_ie_attr,
497 IEEE80211_MAX_DATA_LEN),
498 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
499 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
500
501 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
502 .len = IEEE80211_MAX_SSID_LEN },
503 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
504 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
505 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
506 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
507 [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
508 NL80211_MFP_NO,
509 NL80211_MFP_OPTIONAL),
510 [NL80211_ATTR_STA_FLAGS2] = {
511 .len = sizeof(struct nl80211_sta_flag_update),
512 },
513 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
514 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
515 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
516 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
517 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
518 [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
519 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
520 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
521 [NL80211_ATTR_PID] = { .type = NLA_U32 },
522 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
523 [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
524 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
525 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
526 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
527 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
528 .len = IEEE80211_MAX_DATA_LEN },
529 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
530 [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
531 NL80211_PS_DISABLED,
532 NL80211_PS_ENABLED),
533 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
534 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
535 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
536 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
537 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
538 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
539 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
540 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
541 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
542 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
543 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
544 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
545 [NL80211_ATTR_STA_PLINK_STATE] =
546 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
547 [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
548 [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
549 [NL80211_ATTR_MESH_PEER_AID] =
550 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
551 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
552 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
553 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
554 [NL80211_ATTR_HIDDEN_SSID] =
555 NLA_POLICY_RANGE(NLA_U32,
556 NL80211_HIDDEN_SSID_NOT_IN_USE,
557 NL80211_HIDDEN_SSID_ZERO_CONTENTS),
558 [NL80211_ATTR_IE_PROBE_RESP] =
559 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
560 IEEE80211_MAX_DATA_LEN),
561 [NL80211_ATTR_IE_ASSOC_RESP] =
562 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
563 IEEE80211_MAX_DATA_LEN),
564 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
565 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
566 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
567 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
568 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
569 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
570 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
571 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
572 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
573 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
574 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
575 .len = IEEE80211_MAX_DATA_LEN },
576 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
577 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
578 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
579 .len = NL80211_HT_CAPABILITY_LEN
580 },
581 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
582 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
583 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
584 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
585 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
586
587 /* need to include at least Auth Transaction and Status Code */
588 [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
589
590 [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
591 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
592 [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
593 [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
594 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
595 NLA_POLICY_RANGE(NLA_U32,
596 NL80211_MESH_POWER_UNKNOWN + 1,
597 NL80211_MESH_POWER_MAX),
598 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
599 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
600 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
601 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
602 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
603 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
604 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
605 .len = NL80211_VHT_CAPABILITY_LEN,
606 },
607 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
608 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
609 .len = IEEE80211_MAX_DATA_LEN },
610 [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
611 [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
612 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
613 [NL80211_ATTR_PEER_AID] =
614 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
615 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
616 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
617 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
618 [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
619 [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
620 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
621 /*
622 * The value of the Length field of the Supported Operating
623 * Classes element is between 2 and 253.
624 */
625 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
626 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
627 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
628 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
629 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
630 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
631 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
632 [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
633 IEEE80211_QOS_MAP_LEN_MIN,
634 IEEE80211_QOS_MAP_LEN_MAX),
635 [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
636 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
637 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
638 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
639 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
640 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
641 [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
642 [NL80211_ATTR_USER_PRIO] =
643 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
644 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
645 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
646 [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
647 [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
648 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
649 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
650 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
651 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
652 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
653 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
654 [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
655 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
656 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
657 .len = VHT_MUMIMO_GROUPS_DATA_LEN
658 },
659 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
660 [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
661 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
662 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
663 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
664 .len = FILS_MAX_KEK_LEN },
665 [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
666 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
667 [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
668 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
669 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
670 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
671 },
672 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
673 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
674 .len = FILS_ERP_MAX_USERNAME_LEN },
675 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
676 .len = FILS_ERP_MAX_REALM_LEN },
677 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
678 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
679 .len = FILS_ERP_MAX_RRK_LEN },
680 [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
681 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
682 [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
683 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
684 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
685
686 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
687 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
688 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
689 [NL80211_ATTR_HE_CAPABILITY] =
690 NLA_POLICY_RANGE(NLA_BINARY,
691 NL80211_HE_MIN_CAPABILITY_LEN,
692 NL80211_HE_MAX_CAPABILITY_LEN),
693 [NL80211_ATTR_FTM_RESPONDER] =
694 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
695 [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
696 [NL80211_ATTR_PEER_MEASUREMENTS] =
697 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
698 [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
699 [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
700 .len = SAE_PASSWORD_MAX_LEN },
701 [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
702 [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
703 [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
704 [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
705 [NL80211_ATTR_TID_CONFIG] =
706 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
707 [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
708 [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
709 [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
710 [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
711 [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
712 [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
713 [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
714 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
715 [NL80211_ATTR_FILS_DISCOVERY] =
716 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
717 [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
718 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
719 [NL80211_ATTR_S1G_CAPABILITY] =
720 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
721 [NL80211_ATTR_S1G_CAPABILITY_MASK] =
722 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
723 [NL80211_ATTR_SAE_PWE] =
724 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
725 NL80211_SAE_PWE_BOTH),
726 };
727
728 /* policy for the key attributes */
729 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
730 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
731 [NL80211_KEY_IDX] = { .type = NLA_U8 },
732 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
733 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
734 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
735 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
736 [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
737 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
738 [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
739 };
740
741 /* policy for the key default flags */
742 static const struct nla_policy
743 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
744 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
745 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
746 };
747
748 #ifdef CONFIG_PM
749 /* policy for WoWLAN attributes */
750 static const struct nla_policy
751 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
752 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
753 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
754 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
755 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
756 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
757 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
758 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
759 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
760 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
761 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
762 };
763
764 static const struct nla_policy
765 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
766 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
767 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
768 [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
769 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
770 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
771 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
772 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
773 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
774 },
775 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
776 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
777 },
778 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
779 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
780 [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
781 };
782 #endif /* CONFIG_PM */
783
784 /* policy for coalesce rule attributes */
785 static const struct nla_policy
786 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
787 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
788 [NL80211_ATTR_COALESCE_RULE_CONDITION] =
789 NLA_POLICY_RANGE(NLA_U32,
790 NL80211_COALESCE_CONDITION_MATCH,
791 NL80211_COALESCE_CONDITION_NO_MATCH),
792 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
793 };
794
795 /* policy for GTK rekey offload attributes */
796 static const struct nla_policy
797 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
798 [NL80211_REKEY_DATA_KEK] = {
799 .type = NLA_BINARY,
800 .len = NL80211_KEK_EXT_LEN
801 },
802 [NL80211_REKEY_DATA_KCK] = {
803 .type = NLA_BINARY,
804 .len = NL80211_KCK_EXT_LEN
805 },
806 [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
807 [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
808 };
809
810 static const struct nla_policy
811 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
812 [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
813 [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
814 [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
815 [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
816 };
817
818 static const struct nla_policy
819 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
820 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
821 .len = IEEE80211_MAX_SSID_LEN },
822 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
823 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
824 [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
825 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
826 };
827
828 static const struct nla_policy
829 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
830 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
831 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
832 };
833
834 static const struct nla_policy
835 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
836 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
837 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
838 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
839 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
840 },
841 };
842
843 /* policy for NAN function attributes */
844 static const struct nla_policy
845 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
846 [NL80211_NAN_FUNC_TYPE] =
847 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
848 [NL80211_NAN_FUNC_SERVICE_ID] = {
849 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
850 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
851 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
852 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
853 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
854 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
855 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
856 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
857 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
858 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
859 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
860 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
861 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
862 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
863 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
864 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
865 };
866
867 /* policy for Service Response Filter attributes */
868 static const struct nla_policy
869 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
870 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
871 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
872 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
873 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
874 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
875 };
876
877 /* policy for packet pattern attributes */
878 static const struct nla_policy
879 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
880 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
881 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
882 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
883 };
884
nl80211_prepare_wdev_dump(struct netlink_callback * cb,struct cfg80211_registered_device ** rdev,struct wireless_dev ** wdev)885 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
886 struct cfg80211_registered_device **rdev,
887 struct wireless_dev **wdev)
888 {
889 int err;
890
891 if (!cb->args[0]) {
892 struct nlattr **attrbuf;
893
894 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
895 GFP_KERNEL);
896 if (!attrbuf)
897 return -ENOMEM;
898
899 err = nlmsg_parse_deprecated(cb->nlh,
900 GENL_HDRLEN + nl80211_fam.hdrsize,
901 attrbuf, nl80211_fam.maxattr,
902 nl80211_policy, NULL);
903 if (err) {
904 kfree(attrbuf);
905 return err;
906 }
907
908 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
909 attrbuf);
910 kfree(attrbuf);
911 if (IS_ERR(*wdev))
912 return PTR_ERR(*wdev);
913 *rdev = wiphy_to_rdev((*wdev)->wiphy);
914 /* 0 is the first index - add 1 to parse only once */
915 cb->args[0] = (*rdev)->wiphy_idx + 1;
916 cb->args[1] = (*wdev)->identifier;
917 } else {
918 /* subtract the 1 again here */
919 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
920 struct wireless_dev *tmp;
921
922 if (!wiphy)
923 return -ENODEV;
924 *rdev = wiphy_to_rdev(wiphy);
925 *wdev = NULL;
926
927 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
928 if (tmp->identifier == cb->args[1]) {
929 *wdev = tmp;
930 break;
931 }
932 }
933
934 if (!*wdev)
935 return -ENODEV;
936 }
937
938 return 0;
939 }
940
941 /* message building helper */
nl80211hdr_put(struct sk_buff * skb,u32 portid,u32 seq,int flags,u8 cmd)942 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
943 int flags, u8 cmd)
944 {
945 /* since there is no private header just add the generic one */
946 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
947 }
948
nl80211_msg_put_wmm_rules(struct sk_buff * msg,const struct ieee80211_reg_rule * rule)949 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
950 const struct ieee80211_reg_rule *rule)
951 {
952 int j;
953 struct nlattr *nl_wmm_rules =
954 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
955
956 if (!nl_wmm_rules)
957 goto nla_put_failure;
958
959 for (j = 0; j < IEEE80211_NUM_ACS; j++) {
960 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
961
962 if (!nl_wmm_rule)
963 goto nla_put_failure;
964
965 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
966 rule->wmm_rule.client[j].cw_min) ||
967 nla_put_u16(msg, NL80211_WMMR_CW_MAX,
968 rule->wmm_rule.client[j].cw_max) ||
969 nla_put_u8(msg, NL80211_WMMR_AIFSN,
970 rule->wmm_rule.client[j].aifsn) ||
971 nla_put_u16(msg, NL80211_WMMR_TXOP,
972 rule->wmm_rule.client[j].cot))
973 goto nla_put_failure;
974
975 nla_nest_end(msg, nl_wmm_rule);
976 }
977 nla_nest_end(msg, nl_wmm_rules);
978
979 return 0;
980
981 nla_put_failure:
982 return -ENOBUFS;
983 }
984
nl80211_msg_put_channel(struct sk_buff * msg,struct wiphy * wiphy,struct ieee80211_channel * chan,bool large)985 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
986 struct ieee80211_channel *chan,
987 bool large)
988 {
989 /* Some channels must be completely excluded from the
990 * list to protect old user-space tools from breaking
991 */
992 if (!large && chan->flags &
993 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
994 return 0;
995 if (!large && chan->freq_offset)
996 return 0;
997
998 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
999 chan->center_freq))
1000 goto nla_put_failure;
1001
1002 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1003 goto nla_put_failure;
1004
1005 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1006 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1007 goto nla_put_failure;
1008 if (chan->flags & IEEE80211_CHAN_NO_IR) {
1009 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1010 goto nla_put_failure;
1011 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1012 goto nla_put_failure;
1013 }
1014 if (chan->flags & IEEE80211_CHAN_RADAR) {
1015 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1016 goto nla_put_failure;
1017 if (large) {
1018 u32 time;
1019
1020 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1021
1022 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1023 chan->dfs_state))
1024 goto nla_put_failure;
1025 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1026 time))
1027 goto nla_put_failure;
1028 if (nla_put_u32(msg,
1029 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1030 chan->dfs_cac_ms))
1031 goto nla_put_failure;
1032 }
1033 }
1034
1035 if (large) {
1036 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1037 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1038 goto nla_put_failure;
1039 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1040 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1041 goto nla_put_failure;
1042 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1043 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1044 goto nla_put_failure;
1045 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1046 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1047 goto nla_put_failure;
1048 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1049 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1050 goto nla_put_failure;
1051 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1052 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1053 goto nla_put_failure;
1054 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1055 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1056 goto nla_put_failure;
1057 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1058 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1059 goto nla_put_failure;
1060 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1061 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1062 goto nla_put_failure;
1063 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1064 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1065 goto nla_put_failure;
1066 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1067 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1068 goto nla_put_failure;
1069 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1070 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1071 goto nla_put_failure;
1072 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1073 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1074 goto nla_put_failure;
1075 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1076 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1077 goto nla_put_failure;
1078 }
1079
1080 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1081 DBM_TO_MBM(chan->max_power)))
1082 goto nla_put_failure;
1083
1084 if (large) {
1085 const struct ieee80211_reg_rule *rule =
1086 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1087
1088 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1089 if (nl80211_msg_put_wmm_rules(msg, rule))
1090 goto nla_put_failure;
1091 }
1092 }
1093
1094 return 0;
1095
1096 nla_put_failure:
1097 return -ENOBUFS;
1098 }
1099
nl80211_put_txq_stats(struct sk_buff * msg,struct cfg80211_txq_stats * txqstats,int attrtype)1100 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1101 struct cfg80211_txq_stats *txqstats,
1102 int attrtype)
1103 {
1104 struct nlattr *txqattr;
1105
1106 #define PUT_TXQVAL_U32(attr, memb) do { \
1107 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \
1108 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1109 return false; \
1110 } while (0)
1111
1112 txqattr = nla_nest_start_noflag(msg, attrtype);
1113 if (!txqattr)
1114 return false;
1115
1116 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1117 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1118 PUT_TXQVAL_U32(FLOWS, flows);
1119 PUT_TXQVAL_U32(DROPS, drops);
1120 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1121 PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1122 PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1123 PUT_TXQVAL_U32(COLLISIONS, collisions);
1124 PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1125 PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1126 PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1127 nla_nest_end(msg, txqattr);
1128
1129 #undef PUT_TXQVAL_U32
1130 return true;
1131 }
1132
1133 /* netlink command implementations */
1134
1135 struct key_parse {
1136 struct key_params p;
1137 int idx;
1138 int type;
1139 bool def, defmgmt, defbeacon;
1140 bool def_uni, def_multi;
1141 };
1142
nl80211_parse_key_new(struct genl_info * info,struct nlattr * key,struct key_parse * k)1143 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1144 struct key_parse *k)
1145 {
1146 struct nlattr *tb[NL80211_KEY_MAX + 1];
1147 int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1148 nl80211_key_policy,
1149 info->extack);
1150 if (err)
1151 return err;
1152
1153 k->def = !!tb[NL80211_KEY_DEFAULT];
1154 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1155 k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1156
1157 if (k->def) {
1158 k->def_uni = true;
1159 k->def_multi = true;
1160 }
1161 if (k->defmgmt || k->defbeacon)
1162 k->def_multi = true;
1163
1164 if (tb[NL80211_KEY_IDX])
1165 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1166
1167 if (tb[NL80211_KEY_DATA]) {
1168 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1169 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1170 }
1171
1172 if (tb[NL80211_KEY_SEQ]) {
1173 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1174 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1175 }
1176
1177 if (tb[NL80211_KEY_CIPHER])
1178 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1179
1180 if (tb[NL80211_KEY_TYPE])
1181 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1182
1183 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1184 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1185
1186 err = nla_parse_nested_deprecated(kdt,
1187 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1188 tb[NL80211_KEY_DEFAULT_TYPES],
1189 nl80211_key_default_policy,
1190 info->extack);
1191 if (err)
1192 return err;
1193
1194 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1195 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1196 }
1197
1198 if (tb[NL80211_KEY_MODE])
1199 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1200
1201 return 0;
1202 }
1203
nl80211_parse_key_old(struct genl_info * info,struct key_parse * k)1204 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1205 {
1206 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1207 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1208 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1209 }
1210
1211 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1212 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1213 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1214 }
1215
1216 if (info->attrs[NL80211_ATTR_KEY_IDX])
1217 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1218
1219 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1220 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1221
1222 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1223 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1224
1225 if (k->def) {
1226 k->def_uni = true;
1227 k->def_multi = true;
1228 }
1229 if (k->defmgmt)
1230 k->def_multi = true;
1231
1232 if (info->attrs[NL80211_ATTR_KEY_TYPE])
1233 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1234
1235 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1236 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1237 int err = nla_parse_nested_deprecated(kdt,
1238 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1239 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1240 nl80211_key_default_policy,
1241 info->extack);
1242 if (err)
1243 return err;
1244
1245 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1246 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1247 }
1248
1249 return 0;
1250 }
1251
nl80211_parse_key(struct genl_info * info,struct key_parse * k)1252 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1253 {
1254 int err;
1255
1256 memset(k, 0, sizeof(*k));
1257 k->idx = -1;
1258 k->type = -1;
1259
1260 if (info->attrs[NL80211_ATTR_KEY])
1261 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1262 else
1263 err = nl80211_parse_key_old(info, k);
1264
1265 if (err)
1266 return err;
1267
1268 if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1269 (k->defbeacon ? 1 : 0) > 1) {
1270 GENL_SET_ERR_MSG(info,
1271 "key with multiple default flags is invalid");
1272 return -EINVAL;
1273 }
1274
1275 if (k->defmgmt || k->defbeacon) {
1276 if (k->def_uni || !k->def_multi) {
1277 GENL_SET_ERR_MSG(info,
1278 "defmgmt/defbeacon key must be mcast");
1279 return -EINVAL;
1280 }
1281 }
1282
1283 if (k->idx != -1) {
1284 if (k->defmgmt) {
1285 if (k->idx < 4 || k->idx > 5) {
1286 GENL_SET_ERR_MSG(info,
1287 "defmgmt key idx not 4 or 5");
1288 return -EINVAL;
1289 }
1290 } else if (k->defbeacon) {
1291 if (k->idx < 6 || k->idx > 7) {
1292 GENL_SET_ERR_MSG(info,
1293 "defbeacon key idx not 6 or 7");
1294 return -EINVAL;
1295 }
1296 } else if (k->def) {
1297 if (k->idx < 0 || k->idx > 3) {
1298 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1299 return -EINVAL;
1300 }
1301 } else {
1302 if (k->idx < 0 || k->idx > 7) {
1303 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1304 return -EINVAL;
1305 }
1306 }
1307 }
1308
1309 return 0;
1310 }
1311
1312 static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device * rdev,struct genl_info * info,bool * no_ht)1313 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1314 struct genl_info *info, bool *no_ht)
1315 {
1316 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1317 struct key_parse parse;
1318 struct nlattr *key;
1319 struct cfg80211_cached_keys *result;
1320 int rem, err, def = 0;
1321 bool have_key = false;
1322
1323 nla_for_each_nested(key, keys, rem) {
1324 have_key = true;
1325 break;
1326 }
1327
1328 if (!have_key)
1329 return NULL;
1330
1331 result = kzalloc(sizeof(*result), GFP_KERNEL);
1332 if (!result)
1333 return ERR_PTR(-ENOMEM);
1334
1335 result->def = -1;
1336
1337 nla_for_each_nested(key, keys, rem) {
1338 memset(&parse, 0, sizeof(parse));
1339 parse.idx = -1;
1340
1341 err = nl80211_parse_key_new(info, key, &parse);
1342 if (err)
1343 goto error;
1344 err = -EINVAL;
1345 if (!parse.p.key)
1346 goto error;
1347 if (parse.idx < 0 || parse.idx > 3) {
1348 GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1349 goto error;
1350 }
1351 if (parse.def) {
1352 if (def) {
1353 GENL_SET_ERR_MSG(info,
1354 "only one key can be default");
1355 goto error;
1356 }
1357 def = 1;
1358 result->def = parse.idx;
1359 if (!parse.def_uni || !parse.def_multi)
1360 goto error;
1361 } else if (parse.defmgmt)
1362 goto error;
1363 err = cfg80211_validate_key_settings(rdev, &parse.p,
1364 parse.idx, false, NULL);
1365 if (err)
1366 goto error;
1367 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1368 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1369 GENL_SET_ERR_MSG(info, "connect key must be WEP");
1370 err = -EINVAL;
1371 goto error;
1372 }
1373 result->params[parse.idx].cipher = parse.p.cipher;
1374 result->params[parse.idx].key_len = parse.p.key_len;
1375 result->params[parse.idx].key = result->data[parse.idx];
1376 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1377
1378 /* must be WEP key if we got here */
1379 if (no_ht)
1380 *no_ht = true;
1381 }
1382
1383 if (result->def < 0) {
1384 err = -EINVAL;
1385 GENL_SET_ERR_MSG(info, "need a default/TX key");
1386 goto error;
1387 }
1388
1389 return result;
1390 error:
1391 kfree(result);
1392 return ERR_PTR(err);
1393 }
1394
nl80211_key_allowed(struct wireless_dev * wdev)1395 static int nl80211_key_allowed(struct wireless_dev *wdev)
1396 {
1397 ASSERT_WDEV_LOCK(wdev);
1398
1399 switch (wdev->iftype) {
1400 case NL80211_IFTYPE_AP:
1401 case NL80211_IFTYPE_AP_VLAN:
1402 case NL80211_IFTYPE_P2P_GO:
1403 case NL80211_IFTYPE_MESH_POINT:
1404 break;
1405 case NL80211_IFTYPE_ADHOC:
1406 case NL80211_IFTYPE_STATION:
1407 case NL80211_IFTYPE_P2P_CLIENT:
1408 if (!wdev->current_bss)
1409 return -ENOLINK;
1410 break;
1411 case NL80211_IFTYPE_UNSPECIFIED:
1412 case NL80211_IFTYPE_OCB:
1413 case NL80211_IFTYPE_MONITOR:
1414 case NL80211_IFTYPE_NAN:
1415 case NL80211_IFTYPE_P2P_DEVICE:
1416 case NL80211_IFTYPE_WDS:
1417 case NUM_NL80211_IFTYPES:
1418 return -EINVAL;
1419 }
1420
1421 return 0;
1422 }
1423
nl80211_get_valid_chan(struct wiphy * wiphy,u32 freq)1424 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1425 u32 freq)
1426 {
1427 struct ieee80211_channel *chan;
1428
1429 chan = ieee80211_get_channel_khz(wiphy, freq);
1430 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1431 return NULL;
1432 return chan;
1433 }
1434
nl80211_put_iftypes(struct sk_buff * msg,u32 attr,u16 ifmodes)1435 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1436 {
1437 struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1438 int i;
1439
1440 if (!nl_modes)
1441 goto nla_put_failure;
1442
1443 i = 0;
1444 while (ifmodes) {
1445 if ((ifmodes & 1) && nla_put_flag(msg, i))
1446 goto nla_put_failure;
1447 ifmodes >>= 1;
1448 i++;
1449 }
1450
1451 nla_nest_end(msg, nl_modes);
1452 return 0;
1453
1454 nla_put_failure:
1455 return -ENOBUFS;
1456 }
1457
nl80211_put_iface_combinations(struct wiphy * wiphy,struct sk_buff * msg,bool large)1458 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1459 struct sk_buff *msg,
1460 bool large)
1461 {
1462 struct nlattr *nl_combis;
1463 int i, j;
1464
1465 nl_combis = nla_nest_start_noflag(msg,
1466 NL80211_ATTR_INTERFACE_COMBINATIONS);
1467 if (!nl_combis)
1468 goto nla_put_failure;
1469
1470 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1471 const struct ieee80211_iface_combination *c;
1472 struct nlattr *nl_combi, *nl_limits;
1473
1474 c = &wiphy->iface_combinations[i];
1475
1476 nl_combi = nla_nest_start_noflag(msg, i + 1);
1477 if (!nl_combi)
1478 goto nla_put_failure;
1479
1480 nl_limits = nla_nest_start_noflag(msg,
1481 NL80211_IFACE_COMB_LIMITS);
1482 if (!nl_limits)
1483 goto nla_put_failure;
1484
1485 for (j = 0; j < c->n_limits; j++) {
1486 struct nlattr *nl_limit;
1487
1488 nl_limit = nla_nest_start_noflag(msg, j + 1);
1489 if (!nl_limit)
1490 goto nla_put_failure;
1491 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1492 c->limits[j].max))
1493 goto nla_put_failure;
1494 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1495 c->limits[j].types))
1496 goto nla_put_failure;
1497 nla_nest_end(msg, nl_limit);
1498 }
1499
1500 nla_nest_end(msg, nl_limits);
1501
1502 if (c->beacon_int_infra_match &&
1503 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1504 goto nla_put_failure;
1505 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1506 c->num_different_channels) ||
1507 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1508 c->max_interfaces))
1509 goto nla_put_failure;
1510 if (large &&
1511 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1512 c->radar_detect_widths) ||
1513 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1514 c->radar_detect_regions)))
1515 goto nla_put_failure;
1516 if (c->beacon_int_min_gcd &&
1517 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1518 c->beacon_int_min_gcd))
1519 goto nla_put_failure;
1520
1521 nla_nest_end(msg, nl_combi);
1522 }
1523
1524 nla_nest_end(msg, nl_combis);
1525
1526 return 0;
1527 nla_put_failure:
1528 return -ENOBUFS;
1529 }
1530
1531 #ifdef CONFIG_PM
nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1532 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1533 struct sk_buff *msg)
1534 {
1535 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1536 struct nlattr *nl_tcp;
1537
1538 if (!tcp)
1539 return 0;
1540
1541 nl_tcp = nla_nest_start_noflag(msg,
1542 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1543 if (!nl_tcp)
1544 return -ENOBUFS;
1545
1546 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1547 tcp->data_payload_max))
1548 return -ENOBUFS;
1549
1550 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1551 tcp->data_payload_max))
1552 return -ENOBUFS;
1553
1554 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1555 return -ENOBUFS;
1556
1557 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1558 sizeof(*tcp->tok), tcp->tok))
1559 return -ENOBUFS;
1560
1561 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1562 tcp->data_interval_max))
1563 return -ENOBUFS;
1564
1565 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1566 tcp->wake_payload_max))
1567 return -ENOBUFS;
1568
1569 nla_nest_end(msg, nl_tcp);
1570 return 0;
1571 }
1572
nl80211_send_wowlan(struct sk_buff * msg,struct cfg80211_registered_device * rdev,bool large)1573 static int nl80211_send_wowlan(struct sk_buff *msg,
1574 struct cfg80211_registered_device *rdev,
1575 bool large)
1576 {
1577 struct nlattr *nl_wowlan;
1578
1579 if (!rdev->wiphy.wowlan)
1580 return 0;
1581
1582 nl_wowlan = nla_nest_start_noflag(msg,
1583 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1584 if (!nl_wowlan)
1585 return -ENOBUFS;
1586
1587 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1588 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1589 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1590 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1591 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1592 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1593 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1594 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1595 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1596 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1597 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1598 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1599 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1600 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1601 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1602 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1603 return -ENOBUFS;
1604
1605 if (rdev->wiphy.wowlan->n_patterns) {
1606 struct nl80211_pattern_support pat = {
1607 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1608 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1609 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1610 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1611 };
1612
1613 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1614 sizeof(pat), &pat))
1615 return -ENOBUFS;
1616 }
1617
1618 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1619 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1620 rdev->wiphy.wowlan->max_nd_match_sets))
1621 return -ENOBUFS;
1622
1623 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1624 return -ENOBUFS;
1625
1626 nla_nest_end(msg, nl_wowlan);
1627
1628 return 0;
1629 }
1630 #endif
1631
nl80211_send_coalesce(struct sk_buff * msg,struct cfg80211_registered_device * rdev)1632 static int nl80211_send_coalesce(struct sk_buff *msg,
1633 struct cfg80211_registered_device *rdev)
1634 {
1635 struct nl80211_coalesce_rule_support rule;
1636
1637 if (!rdev->wiphy.coalesce)
1638 return 0;
1639
1640 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1641 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1642 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1643 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1644 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1645 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1646
1647 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1648 return -ENOBUFS;
1649
1650 return 0;
1651 }
1652
1653 static int
nl80211_send_iftype_data(struct sk_buff * msg,const struct ieee80211_supported_band * sband,const struct ieee80211_sband_iftype_data * iftdata)1654 nl80211_send_iftype_data(struct sk_buff *msg,
1655 const struct ieee80211_supported_band *sband,
1656 const struct ieee80211_sband_iftype_data *iftdata)
1657 {
1658 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1659
1660 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1661 iftdata->types_mask))
1662 return -ENOBUFS;
1663
1664 if (he_cap->has_he) {
1665 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1666 sizeof(he_cap->he_cap_elem.mac_cap_info),
1667 he_cap->he_cap_elem.mac_cap_info) ||
1668 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1669 sizeof(he_cap->he_cap_elem.phy_cap_info),
1670 he_cap->he_cap_elem.phy_cap_info) ||
1671 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1672 sizeof(he_cap->he_mcs_nss_supp),
1673 &he_cap->he_mcs_nss_supp) ||
1674 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1675 sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1676 return -ENOBUFS;
1677 }
1678
1679 if (sband->band == NL80211_BAND_6GHZ &&
1680 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1681 sizeof(iftdata->he_6ghz_capa),
1682 &iftdata->he_6ghz_capa))
1683 return -ENOBUFS;
1684
1685 return 0;
1686 }
1687
nl80211_send_band_rateinfo(struct sk_buff * msg,struct ieee80211_supported_band * sband,bool large)1688 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1689 struct ieee80211_supported_band *sband,
1690 bool large)
1691 {
1692 struct nlattr *nl_rates, *nl_rate;
1693 struct ieee80211_rate *rate;
1694 int i;
1695
1696 /* add HT info */
1697 if (sband->ht_cap.ht_supported &&
1698 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1699 sizeof(sband->ht_cap.mcs),
1700 &sband->ht_cap.mcs) ||
1701 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1702 sband->ht_cap.cap) ||
1703 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1704 sband->ht_cap.ampdu_factor) ||
1705 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1706 sband->ht_cap.ampdu_density)))
1707 return -ENOBUFS;
1708
1709 /* add VHT info */
1710 if (sband->vht_cap.vht_supported &&
1711 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1712 sizeof(sband->vht_cap.vht_mcs),
1713 &sband->vht_cap.vht_mcs) ||
1714 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1715 sband->vht_cap.cap)))
1716 return -ENOBUFS;
1717
1718 if (large && sband->n_iftype_data) {
1719 struct nlattr *nl_iftype_data =
1720 nla_nest_start_noflag(msg,
1721 NL80211_BAND_ATTR_IFTYPE_DATA);
1722 int err;
1723
1724 if (!nl_iftype_data)
1725 return -ENOBUFS;
1726
1727 for (i = 0; i < sband->n_iftype_data; i++) {
1728 struct nlattr *iftdata;
1729
1730 iftdata = nla_nest_start_noflag(msg, i + 1);
1731 if (!iftdata)
1732 return -ENOBUFS;
1733
1734 err = nl80211_send_iftype_data(msg, sband,
1735 &sband->iftype_data[i]);
1736 if (err)
1737 return err;
1738
1739 nla_nest_end(msg, iftdata);
1740 }
1741
1742 nla_nest_end(msg, nl_iftype_data);
1743 }
1744
1745 /* add EDMG info */
1746 if (large && sband->edmg_cap.channels &&
1747 (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1748 sband->edmg_cap.channels) ||
1749 nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1750 sband->edmg_cap.bw_config)))
1751
1752 return -ENOBUFS;
1753
1754 /* add bitrates */
1755 nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1756 if (!nl_rates)
1757 return -ENOBUFS;
1758
1759 for (i = 0; i < sband->n_bitrates; i++) {
1760 nl_rate = nla_nest_start_noflag(msg, i);
1761 if (!nl_rate)
1762 return -ENOBUFS;
1763
1764 rate = &sband->bitrates[i];
1765 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1766 rate->bitrate))
1767 return -ENOBUFS;
1768 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1769 nla_put_flag(msg,
1770 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1771 return -ENOBUFS;
1772
1773 nla_nest_end(msg, nl_rate);
1774 }
1775
1776 nla_nest_end(msg, nl_rates);
1777
1778 return 0;
1779 }
1780
1781 static int
nl80211_send_mgmt_stypes(struct sk_buff * msg,const struct ieee80211_txrx_stypes * mgmt_stypes)1782 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1783 const struct ieee80211_txrx_stypes *mgmt_stypes)
1784 {
1785 u16 stypes;
1786 struct nlattr *nl_ftypes, *nl_ifs;
1787 enum nl80211_iftype ift;
1788 int i;
1789
1790 if (!mgmt_stypes)
1791 return 0;
1792
1793 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1794 if (!nl_ifs)
1795 return -ENOBUFS;
1796
1797 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1798 nl_ftypes = nla_nest_start_noflag(msg, ift);
1799 if (!nl_ftypes)
1800 return -ENOBUFS;
1801 i = 0;
1802 stypes = mgmt_stypes[ift].tx;
1803 while (stypes) {
1804 if ((stypes & 1) &&
1805 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1806 (i << 4) | IEEE80211_FTYPE_MGMT))
1807 return -ENOBUFS;
1808 stypes >>= 1;
1809 i++;
1810 }
1811 nla_nest_end(msg, nl_ftypes);
1812 }
1813
1814 nla_nest_end(msg, nl_ifs);
1815
1816 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1817 if (!nl_ifs)
1818 return -ENOBUFS;
1819
1820 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1821 nl_ftypes = nla_nest_start_noflag(msg, ift);
1822 if (!nl_ftypes)
1823 return -ENOBUFS;
1824 i = 0;
1825 stypes = mgmt_stypes[ift].rx;
1826 while (stypes) {
1827 if ((stypes & 1) &&
1828 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1829 (i << 4) | IEEE80211_FTYPE_MGMT))
1830 return -ENOBUFS;
1831 stypes >>= 1;
1832 i++;
1833 }
1834 nla_nest_end(msg, nl_ftypes);
1835 }
1836 nla_nest_end(msg, nl_ifs);
1837
1838 return 0;
1839 }
1840
1841 #define CMD(op, n) \
1842 do { \
1843 if (rdev->ops->op) { \
1844 i++; \
1845 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1846 goto nla_put_failure; \
1847 } \
1848 } while (0)
1849
nl80211_add_commands_unsplit(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1850 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1851 struct sk_buff *msg)
1852 {
1853 int i = 0;
1854
1855 /*
1856 * do *NOT* add anything into this function, new things need to be
1857 * advertised only to new versions of userspace that can deal with
1858 * the split (and they can't possibly care about new features...
1859 */
1860 CMD(add_virtual_intf, NEW_INTERFACE);
1861 CMD(change_virtual_intf, SET_INTERFACE);
1862 CMD(add_key, NEW_KEY);
1863 CMD(start_ap, START_AP);
1864 CMD(add_station, NEW_STATION);
1865 CMD(add_mpath, NEW_MPATH);
1866 CMD(update_mesh_config, SET_MESH_CONFIG);
1867 CMD(change_bss, SET_BSS);
1868 CMD(auth, AUTHENTICATE);
1869 CMD(assoc, ASSOCIATE);
1870 CMD(deauth, DEAUTHENTICATE);
1871 CMD(disassoc, DISASSOCIATE);
1872 CMD(join_ibss, JOIN_IBSS);
1873 CMD(join_mesh, JOIN_MESH);
1874 CMD(set_pmksa, SET_PMKSA);
1875 CMD(del_pmksa, DEL_PMKSA);
1876 CMD(flush_pmksa, FLUSH_PMKSA);
1877 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1878 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1879 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1880 CMD(mgmt_tx, FRAME);
1881 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1882 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1883 i++;
1884 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1885 goto nla_put_failure;
1886 }
1887 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1888 rdev->ops->join_mesh) {
1889 i++;
1890 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1891 goto nla_put_failure;
1892 }
1893 CMD(set_wds_peer, SET_WDS_PEER);
1894 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1895 CMD(tdls_mgmt, TDLS_MGMT);
1896 CMD(tdls_oper, TDLS_OPER);
1897 }
1898 if (rdev->wiphy.max_sched_scan_reqs)
1899 CMD(sched_scan_start, START_SCHED_SCAN);
1900 CMD(probe_client, PROBE_CLIENT);
1901 CMD(set_noack_map, SET_NOACK_MAP);
1902 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1903 i++;
1904 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1905 goto nla_put_failure;
1906 }
1907 CMD(start_p2p_device, START_P2P_DEVICE);
1908 CMD(set_mcast_rate, SET_MCAST_RATE);
1909 #ifdef CONFIG_NL80211_TESTMODE
1910 CMD(testmode_cmd, TESTMODE);
1911 #endif
1912
1913 if (rdev->ops->connect || rdev->ops->auth) {
1914 i++;
1915 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1916 goto nla_put_failure;
1917 }
1918
1919 if (rdev->ops->disconnect || rdev->ops->deauth) {
1920 i++;
1921 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1922 goto nla_put_failure;
1923 }
1924
1925 return i;
1926 nla_put_failure:
1927 return -ENOBUFS;
1928 }
1929
1930 static int
nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities * cap,struct sk_buff * msg)1931 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1932 struct sk_buff *msg)
1933 {
1934 struct nlattr *ftm;
1935
1936 if (!cap->ftm.supported)
1937 return 0;
1938
1939 ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1940 if (!ftm)
1941 return -ENOBUFS;
1942
1943 if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1944 return -ENOBUFS;
1945 if (cap->ftm.non_asap &&
1946 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1947 return -ENOBUFS;
1948 if (cap->ftm.request_lci &&
1949 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1950 return -ENOBUFS;
1951 if (cap->ftm.request_civicloc &&
1952 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1953 return -ENOBUFS;
1954 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1955 cap->ftm.preambles))
1956 return -ENOBUFS;
1957 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1958 cap->ftm.bandwidths))
1959 return -ENOBUFS;
1960 if (cap->ftm.max_bursts_exponent >= 0 &&
1961 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1962 cap->ftm.max_bursts_exponent))
1963 return -ENOBUFS;
1964 if (cap->ftm.max_ftms_per_burst &&
1965 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1966 cap->ftm.max_ftms_per_burst))
1967 return -ENOBUFS;
1968 if (cap->ftm.trigger_based &&
1969 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1970 return -ENOBUFS;
1971 if (cap->ftm.non_trigger_based &&
1972 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1973 return -ENOBUFS;
1974
1975 nla_nest_end(msg, ftm);
1976 return 0;
1977 }
1978
nl80211_send_pmsr_capa(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1979 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1980 struct sk_buff *msg)
1981 {
1982 const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1983 struct nlattr *pmsr, *caps;
1984
1985 if (!cap)
1986 return 0;
1987
1988 /*
1989 * we don't need to clean up anything here since the caller
1990 * will genlmsg_cancel() if we fail
1991 */
1992
1993 pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1994 if (!pmsr)
1995 return -ENOBUFS;
1996
1997 if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1998 return -ENOBUFS;
1999
2000 if (cap->report_ap_tsf &&
2001 nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2002 return -ENOBUFS;
2003
2004 if (cap->randomize_mac_addr &&
2005 nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2006 return -ENOBUFS;
2007
2008 caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2009 if (!caps)
2010 return -ENOBUFS;
2011
2012 if (nl80211_send_pmsr_ftm_capa(cap, msg))
2013 return -ENOBUFS;
2014
2015 nla_nest_end(msg, caps);
2016 nla_nest_end(msg, pmsr);
2017
2018 return 0;
2019 }
2020
2021 static int
nl80211_put_iftype_akm_suites(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2022 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2023 struct sk_buff *msg)
2024 {
2025 int i;
2026 struct nlattr *nested, *nested_akms;
2027 const struct wiphy_iftype_akm_suites *iftype_akms;
2028
2029 if (!rdev->wiphy.num_iftype_akm_suites ||
2030 !rdev->wiphy.iftype_akm_suites)
2031 return 0;
2032
2033 nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2034 if (!nested)
2035 return -ENOBUFS;
2036
2037 for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2038 nested_akms = nla_nest_start(msg, i + 1);
2039 if (!nested_akms)
2040 return -ENOBUFS;
2041
2042 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2043
2044 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2045 iftype_akms->iftypes_mask))
2046 return -ENOBUFS;
2047
2048 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2049 sizeof(u32) * iftype_akms->n_akm_suites,
2050 iftype_akms->akm_suites)) {
2051 return -ENOBUFS;
2052 }
2053 nla_nest_end(msg, nested_akms);
2054 }
2055
2056 nla_nest_end(msg, nested);
2057
2058 return 0;
2059 }
2060
2061 static int
nl80211_put_tid_config_support(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2062 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2063 struct sk_buff *msg)
2064 {
2065 struct nlattr *supp;
2066
2067 if (!rdev->wiphy.tid_config_support.vif &&
2068 !rdev->wiphy.tid_config_support.peer)
2069 return 0;
2070
2071 supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2072 if (!supp)
2073 return -ENOSPC;
2074
2075 if (rdev->wiphy.tid_config_support.vif &&
2076 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2077 rdev->wiphy.tid_config_support.vif,
2078 NL80211_TID_CONFIG_ATTR_PAD))
2079 goto fail;
2080
2081 if (rdev->wiphy.tid_config_support.peer &&
2082 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2083 rdev->wiphy.tid_config_support.peer,
2084 NL80211_TID_CONFIG_ATTR_PAD))
2085 goto fail;
2086
2087 /* for now we just use the same value ... makes more sense */
2088 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2089 rdev->wiphy.tid_config_support.max_retry))
2090 goto fail;
2091 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2092 rdev->wiphy.tid_config_support.max_retry))
2093 goto fail;
2094
2095 nla_nest_end(msg, supp);
2096
2097 return 0;
2098 fail:
2099 nla_nest_cancel(msg, supp);
2100 return -ENOBUFS;
2101 }
2102
2103 struct nl80211_dump_wiphy_state {
2104 s64 filter_wiphy;
2105 long start;
2106 long split_start, band_start, chan_start, capa_start;
2107 bool split;
2108 };
2109
nl80211_send_wiphy(struct cfg80211_registered_device * rdev,enum nl80211_commands cmd,struct sk_buff * msg,u32 portid,u32 seq,int flags,struct nl80211_dump_wiphy_state * state)2110 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2111 enum nl80211_commands cmd,
2112 struct sk_buff *msg, u32 portid, u32 seq,
2113 int flags, struct nl80211_dump_wiphy_state *state)
2114 {
2115 void *hdr;
2116 struct nlattr *nl_bands, *nl_band;
2117 struct nlattr *nl_freqs, *nl_freq;
2118 struct nlattr *nl_cmds;
2119 enum nl80211_band band;
2120 struct ieee80211_channel *chan;
2121 int i;
2122 const struct ieee80211_txrx_stypes *mgmt_stypes =
2123 rdev->wiphy.mgmt_stypes;
2124 u32 features;
2125
2126 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2127 if (!hdr)
2128 return -ENOBUFS;
2129
2130 if (WARN_ON(!state))
2131 return -EINVAL;
2132
2133 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2134 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2135 wiphy_name(&rdev->wiphy)) ||
2136 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2137 cfg80211_rdev_list_generation))
2138 goto nla_put_failure;
2139
2140 if (cmd != NL80211_CMD_NEW_WIPHY)
2141 goto finish;
2142
2143 switch (state->split_start) {
2144 case 0:
2145 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2146 rdev->wiphy.retry_short) ||
2147 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2148 rdev->wiphy.retry_long) ||
2149 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2150 rdev->wiphy.frag_threshold) ||
2151 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2152 rdev->wiphy.rts_threshold) ||
2153 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2154 rdev->wiphy.coverage_class) ||
2155 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2156 rdev->wiphy.max_scan_ssids) ||
2157 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2158 rdev->wiphy.max_sched_scan_ssids) ||
2159 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2160 rdev->wiphy.max_scan_ie_len) ||
2161 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2162 rdev->wiphy.max_sched_scan_ie_len) ||
2163 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2164 rdev->wiphy.max_match_sets))
2165 goto nla_put_failure;
2166
2167 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2168 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2169 goto nla_put_failure;
2170 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2171 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2172 goto nla_put_failure;
2173 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2174 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2175 goto nla_put_failure;
2176 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2177 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2178 goto nla_put_failure;
2179 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2180 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2181 goto nla_put_failure;
2182 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2183 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2184 goto nla_put_failure;
2185 state->split_start++;
2186 if (state->split)
2187 break;
2188 fallthrough;
2189 case 1:
2190 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2191 sizeof(u32) * rdev->wiphy.n_cipher_suites,
2192 rdev->wiphy.cipher_suites))
2193 goto nla_put_failure;
2194
2195 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2196 rdev->wiphy.max_num_pmkids))
2197 goto nla_put_failure;
2198
2199 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2200 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2201 goto nla_put_failure;
2202
2203 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2204 rdev->wiphy.available_antennas_tx) ||
2205 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2206 rdev->wiphy.available_antennas_rx))
2207 goto nla_put_failure;
2208
2209 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2210 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2211 rdev->wiphy.probe_resp_offload))
2212 goto nla_put_failure;
2213
2214 if ((rdev->wiphy.available_antennas_tx ||
2215 rdev->wiphy.available_antennas_rx) &&
2216 rdev->ops->get_antenna) {
2217 u32 tx_ant = 0, rx_ant = 0;
2218 int res;
2219
2220 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2221 if (!res) {
2222 if (nla_put_u32(msg,
2223 NL80211_ATTR_WIPHY_ANTENNA_TX,
2224 tx_ant) ||
2225 nla_put_u32(msg,
2226 NL80211_ATTR_WIPHY_ANTENNA_RX,
2227 rx_ant))
2228 goto nla_put_failure;
2229 }
2230 }
2231
2232 state->split_start++;
2233 if (state->split)
2234 break;
2235 fallthrough;
2236 case 2:
2237 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2238 rdev->wiphy.interface_modes))
2239 goto nla_put_failure;
2240 state->split_start++;
2241 if (state->split)
2242 break;
2243 fallthrough;
2244 case 3:
2245 nl_bands = nla_nest_start_noflag(msg,
2246 NL80211_ATTR_WIPHY_BANDS);
2247 if (!nl_bands)
2248 goto nla_put_failure;
2249
2250 for (band = state->band_start;
2251 band < NUM_NL80211_BANDS; band++) {
2252 struct ieee80211_supported_band *sband;
2253
2254 /* omit higher bands for ancient software */
2255 if (band > NL80211_BAND_5GHZ && !state->split)
2256 break;
2257
2258 sband = rdev->wiphy.bands[band];
2259
2260 if (!sband)
2261 continue;
2262
2263 nl_band = nla_nest_start_noflag(msg, band);
2264 if (!nl_band)
2265 goto nla_put_failure;
2266
2267 switch (state->chan_start) {
2268 case 0:
2269 if (nl80211_send_band_rateinfo(msg, sband,
2270 state->split))
2271 goto nla_put_failure;
2272 state->chan_start++;
2273 if (state->split)
2274 break;
2275 fallthrough;
2276 default:
2277 /* add frequencies */
2278 nl_freqs = nla_nest_start_noflag(msg,
2279 NL80211_BAND_ATTR_FREQS);
2280 if (!nl_freqs)
2281 goto nla_put_failure;
2282
2283 for (i = state->chan_start - 1;
2284 i < sband->n_channels;
2285 i++) {
2286 nl_freq = nla_nest_start_noflag(msg,
2287 i);
2288 if (!nl_freq)
2289 goto nla_put_failure;
2290
2291 chan = &sband->channels[i];
2292
2293 if (nl80211_msg_put_channel(
2294 msg, &rdev->wiphy, chan,
2295 state->split))
2296 goto nla_put_failure;
2297
2298 nla_nest_end(msg, nl_freq);
2299 if (state->split)
2300 break;
2301 }
2302 if (i < sband->n_channels)
2303 state->chan_start = i + 2;
2304 else
2305 state->chan_start = 0;
2306 nla_nest_end(msg, nl_freqs);
2307 }
2308
2309 nla_nest_end(msg, nl_band);
2310
2311 if (state->split) {
2312 /* start again here */
2313 if (state->chan_start)
2314 band--;
2315 break;
2316 }
2317 }
2318 nla_nest_end(msg, nl_bands);
2319
2320 if (band < NUM_NL80211_BANDS)
2321 state->band_start = band + 1;
2322 else
2323 state->band_start = 0;
2324
2325 /* if bands & channels are done, continue outside */
2326 if (state->band_start == 0 && state->chan_start == 0)
2327 state->split_start++;
2328 if (state->split)
2329 break;
2330 fallthrough;
2331 case 4:
2332 nl_cmds = nla_nest_start_noflag(msg,
2333 NL80211_ATTR_SUPPORTED_COMMANDS);
2334 if (!nl_cmds)
2335 goto nla_put_failure;
2336
2337 i = nl80211_add_commands_unsplit(rdev, msg);
2338 if (i < 0)
2339 goto nla_put_failure;
2340 if (state->split) {
2341 CMD(crit_proto_start, CRIT_PROTOCOL_START);
2342 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2343 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2344 CMD(channel_switch, CHANNEL_SWITCH);
2345 CMD(set_qos_map, SET_QOS_MAP);
2346 if (rdev->wiphy.features &
2347 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2348 CMD(add_tx_ts, ADD_TX_TS);
2349 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2350 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2351 CMD(update_ft_ies, UPDATE_FT_IES);
2352 }
2353 #undef CMD
2354
2355 nla_nest_end(msg, nl_cmds);
2356 state->split_start++;
2357 if (state->split)
2358 break;
2359 fallthrough;
2360 case 5:
2361 if (rdev->ops->remain_on_channel &&
2362 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2363 nla_put_u32(msg,
2364 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2365 rdev->wiphy.max_remain_on_channel_duration))
2366 goto nla_put_failure;
2367
2368 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2369 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2370 goto nla_put_failure;
2371
2372 state->split_start++;
2373 if (state->split)
2374 break;
2375 fallthrough;
2376 case 6:
2377 #ifdef CONFIG_PM
2378 if (nl80211_send_wowlan(msg, rdev, state->split))
2379 goto nla_put_failure;
2380 state->split_start++;
2381 if (state->split)
2382 break;
2383 #else
2384 state->split_start++;
2385 #endif
2386 fallthrough;
2387 case 7:
2388 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2389 rdev->wiphy.software_iftypes))
2390 goto nla_put_failure;
2391
2392 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2393 state->split))
2394 goto nla_put_failure;
2395
2396 state->split_start++;
2397 if (state->split)
2398 break;
2399 fallthrough;
2400 case 8:
2401 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2402 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2403 rdev->wiphy.ap_sme_capa))
2404 goto nla_put_failure;
2405
2406 features = rdev->wiphy.features;
2407 /*
2408 * We can only add the per-channel limit information if the
2409 * dump is split, otherwise it makes it too big. Therefore
2410 * only advertise it in that case.
2411 */
2412 if (state->split)
2413 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2414 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2415 goto nla_put_failure;
2416
2417 if (rdev->wiphy.ht_capa_mod_mask &&
2418 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2419 sizeof(*rdev->wiphy.ht_capa_mod_mask),
2420 rdev->wiphy.ht_capa_mod_mask))
2421 goto nla_put_failure;
2422
2423 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2424 rdev->wiphy.max_acl_mac_addrs &&
2425 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2426 rdev->wiphy.max_acl_mac_addrs))
2427 goto nla_put_failure;
2428
2429 /*
2430 * Any information below this point is only available to
2431 * applications that can deal with it being split. This
2432 * helps ensure that newly added capabilities don't break
2433 * older tools by overrunning their buffers.
2434 *
2435 * We still increment split_start so that in the split
2436 * case we'll continue with more data in the next round,
2437 * but break unconditionally so unsplit data stops here.
2438 */
2439 if (state->split)
2440 state->split_start++;
2441 else
2442 state->split_start = 0;
2443 break;
2444 case 9:
2445 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2446 goto nla_put_failure;
2447
2448 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2449 rdev->wiphy.max_sched_scan_plans) ||
2450 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2451 rdev->wiphy.max_sched_scan_plan_interval) ||
2452 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2453 rdev->wiphy.max_sched_scan_plan_iterations))
2454 goto nla_put_failure;
2455
2456 if (rdev->wiphy.extended_capabilities &&
2457 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2458 rdev->wiphy.extended_capabilities_len,
2459 rdev->wiphy.extended_capabilities) ||
2460 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2461 rdev->wiphy.extended_capabilities_len,
2462 rdev->wiphy.extended_capabilities_mask)))
2463 goto nla_put_failure;
2464
2465 if (rdev->wiphy.vht_capa_mod_mask &&
2466 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2467 sizeof(*rdev->wiphy.vht_capa_mod_mask),
2468 rdev->wiphy.vht_capa_mod_mask))
2469 goto nla_put_failure;
2470
2471 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2472 rdev->wiphy.perm_addr))
2473 goto nla_put_failure;
2474
2475 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2476 nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2477 rdev->wiphy.addr_mask))
2478 goto nla_put_failure;
2479
2480 if (rdev->wiphy.n_addresses > 1) {
2481 void *attr;
2482
2483 attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2484 if (!attr)
2485 goto nla_put_failure;
2486
2487 for (i = 0; i < rdev->wiphy.n_addresses; i++)
2488 if (nla_put(msg, i + 1, ETH_ALEN,
2489 rdev->wiphy.addresses[i].addr))
2490 goto nla_put_failure;
2491
2492 nla_nest_end(msg, attr);
2493 }
2494
2495 state->split_start++;
2496 break;
2497 case 10:
2498 if (nl80211_send_coalesce(msg, rdev))
2499 goto nla_put_failure;
2500
2501 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2502 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2503 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2504 goto nla_put_failure;
2505
2506 if (rdev->wiphy.max_ap_assoc_sta &&
2507 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2508 rdev->wiphy.max_ap_assoc_sta))
2509 goto nla_put_failure;
2510
2511 state->split_start++;
2512 break;
2513 case 11:
2514 if (rdev->wiphy.n_vendor_commands) {
2515 const struct nl80211_vendor_cmd_info *info;
2516 struct nlattr *nested;
2517
2518 nested = nla_nest_start_noflag(msg,
2519 NL80211_ATTR_VENDOR_DATA);
2520 if (!nested)
2521 goto nla_put_failure;
2522
2523 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2524 info = &rdev->wiphy.vendor_commands[i].info;
2525 if (nla_put(msg, i + 1, sizeof(*info), info))
2526 goto nla_put_failure;
2527 }
2528 nla_nest_end(msg, nested);
2529 }
2530
2531 if (rdev->wiphy.n_vendor_events) {
2532 const struct nl80211_vendor_cmd_info *info;
2533 struct nlattr *nested;
2534
2535 nested = nla_nest_start_noflag(msg,
2536 NL80211_ATTR_VENDOR_EVENTS);
2537 if (!nested)
2538 goto nla_put_failure;
2539
2540 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2541 info = &rdev->wiphy.vendor_events[i];
2542 if (nla_put(msg, i + 1, sizeof(*info), info))
2543 goto nla_put_failure;
2544 }
2545 nla_nest_end(msg, nested);
2546 }
2547 state->split_start++;
2548 break;
2549 case 12:
2550 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2551 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2552 rdev->wiphy.max_num_csa_counters))
2553 goto nla_put_failure;
2554
2555 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2556 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2557 goto nla_put_failure;
2558
2559 if (rdev->wiphy.max_sched_scan_reqs &&
2560 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2561 rdev->wiphy.max_sched_scan_reqs))
2562 goto nla_put_failure;
2563
2564 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2565 sizeof(rdev->wiphy.ext_features),
2566 rdev->wiphy.ext_features))
2567 goto nla_put_failure;
2568
2569 if (rdev->wiphy.bss_select_support) {
2570 struct nlattr *nested;
2571 u32 bss_select_support = rdev->wiphy.bss_select_support;
2572
2573 nested = nla_nest_start_noflag(msg,
2574 NL80211_ATTR_BSS_SELECT);
2575 if (!nested)
2576 goto nla_put_failure;
2577
2578 i = 0;
2579 while (bss_select_support) {
2580 if ((bss_select_support & 1) &&
2581 nla_put_flag(msg, i))
2582 goto nla_put_failure;
2583 i++;
2584 bss_select_support >>= 1;
2585 }
2586 nla_nest_end(msg, nested);
2587 }
2588
2589 state->split_start++;
2590 break;
2591 case 13:
2592 if (rdev->wiphy.num_iftype_ext_capab &&
2593 rdev->wiphy.iftype_ext_capab) {
2594 struct nlattr *nested_ext_capab, *nested;
2595
2596 nested = nla_nest_start_noflag(msg,
2597 NL80211_ATTR_IFTYPE_EXT_CAPA);
2598 if (!nested)
2599 goto nla_put_failure;
2600
2601 for (i = state->capa_start;
2602 i < rdev->wiphy.num_iftype_ext_capab; i++) {
2603 const struct wiphy_iftype_ext_capab *capab;
2604
2605 capab = &rdev->wiphy.iftype_ext_capab[i];
2606
2607 nested_ext_capab = nla_nest_start_noflag(msg,
2608 i);
2609 if (!nested_ext_capab ||
2610 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2611 capab->iftype) ||
2612 nla_put(msg, NL80211_ATTR_EXT_CAPA,
2613 capab->extended_capabilities_len,
2614 capab->extended_capabilities) ||
2615 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2616 capab->extended_capabilities_len,
2617 capab->extended_capabilities_mask))
2618 goto nla_put_failure;
2619
2620 nla_nest_end(msg, nested_ext_capab);
2621 if (state->split)
2622 break;
2623 }
2624 nla_nest_end(msg, nested);
2625 if (i < rdev->wiphy.num_iftype_ext_capab) {
2626 state->capa_start = i + 1;
2627 break;
2628 }
2629 }
2630
2631 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2632 rdev->wiphy.nan_supported_bands))
2633 goto nla_put_failure;
2634
2635 if (wiphy_ext_feature_isset(&rdev->wiphy,
2636 NL80211_EXT_FEATURE_TXQS)) {
2637 struct cfg80211_txq_stats txqstats = {};
2638 int res;
2639
2640 res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2641 if (!res &&
2642 !nl80211_put_txq_stats(msg, &txqstats,
2643 NL80211_ATTR_TXQ_STATS))
2644 goto nla_put_failure;
2645
2646 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2647 rdev->wiphy.txq_limit))
2648 goto nla_put_failure;
2649 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2650 rdev->wiphy.txq_memory_limit))
2651 goto nla_put_failure;
2652 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2653 rdev->wiphy.txq_quantum))
2654 goto nla_put_failure;
2655 }
2656
2657 state->split_start++;
2658 break;
2659 case 14:
2660 if (nl80211_send_pmsr_capa(rdev, msg))
2661 goto nla_put_failure;
2662
2663 state->split_start++;
2664 break;
2665 case 15:
2666 if (rdev->wiphy.akm_suites &&
2667 nla_put(msg, NL80211_ATTR_AKM_SUITES,
2668 sizeof(u32) * rdev->wiphy.n_akm_suites,
2669 rdev->wiphy.akm_suites))
2670 goto nla_put_failure;
2671
2672 if (nl80211_put_iftype_akm_suites(rdev, msg))
2673 goto nla_put_failure;
2674
2675 if (nl80211_put_tid_config_support(rdev, msg))
2676 goto nla_put_failure;
2677
2678 /* done */
2679 state->split_start = 0;
2680 break;
2681 }
2682 finish:
2683 genlmsg_end(msg, hdr);
2684 return 0;
2685
2686 nla_put_failure:
2687 genlmsg_cancel(msg, hdr);
2688 return -EMSGSIZE;
2689 }
2690
nl80211_dump_wiphy_parse(struct sk_buff * skb,struct netlink_callback * cb,struct nl80211_dump_wiphy_state * state)2691 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2692 struct netlink_callback *cb,
2693 struct nl80211_dump_wiphy_state *state)
2694 {
2695 struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2696 int ret;
2697
2698 if (!tb)
2699 return -ENOMEM;
2700
2701 ret = nlmsg_parse_deprecated(cb->nlh,
2702 GENL_HDRLEN + nl80211_fam.hdrsize,
2703 tb, nl80211_fam.maxattr,
2704 nl80211_policy, NULL);
2705 /* ignore parse errors for backward compatibility */
2706 if (ret) {
2707 ret = 0;
2708 goto out;
2709 }
2710
2711 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2712 if (tb[NL80211_ATTR_WIPHY])
2713 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2714 if (tb[NL80211_ATTR_WDEV])
2715 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2716 if (tb[NL80211_ATTR_IFINDEX]) {
2717 struct net_device *netdev;
2718 struct cfg80211_registered_device *rdev;
2719 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2720
2721 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2722 if (!netdev) {
2723 ret = -ENODEV;
2724 goto out;
2725 }
2726 if (netdev->ieee80211_ptr) {
2727 rdev = wiphy_to_rdev(
2728 netdev->ieee80211_ptr->wiphy);
2729 state->filter_wiphy = rdev->wiphy_idx;
2730 }
2731 }
2732
2733 ret = 0;
2734 out:
2735 kfree(tb);
2736 return ret;
2737 }
2738
nl80211_dump_wiphy(struct sk_buff * skb,struct netlink_callback * cb)2739 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2740 {
2741 int idx = 0, ret;
2742 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2743 struct cfg80211_registered_device *rdev;
2744
2745 rtnl_lock();
2746 if (!state) {
2747 state = kzalloc(sizeof(*state), GFP_KERNEL);
2748 if (!state) {
2749 rtnl_unlock();
2750 return -ENOMEM;
2751 }
2752 state->filter_wiphy = -1;
2753 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2754 if (ret) {
2755 kfree(state);
2756 rtnl_unlock();
2757 return ret;
2758 }
2759 cb->args[0] = (long)state;
2760 }
2761
2762 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2763 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2764 continue;
2765 if (++idx <= state->start)
2766 continue;
2767 if (state->filter_wiphy != -1 &&
2768 state->filter_wiphy != rdev->wiphy_idx)
2769 continue;
2770 /* attempt to fit multiple wiphy data chunks into the skb */
2771 do {
2772 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2773 skb,
2774 NETLINK_CB(cb->skb).portid,
2775 cb->nlh->nlmsg_seq,
2776 NLM_F_MULTI, state);
2777 if (ret < 0) {
2778 /*
2779 * If sending the wiphy data didn't fit (ENOBUFS
2780 * or EMSGSIZE returned), this SKB is still
2781 * empty (so it's not too big because another
2782 * wiphy dataset is already in the skb) and
2783 * we've not tried to adjust the dump allocation
2784 * yet ... then adjust the alloc size to be
2785 * bigger, and return 1 but with the empty skb.
2786 * This results in an empty message being RX'ed
2787 * in userspace, but that is ignored.
2788 *
2789 * We can then retry with the larger buffer.
2790 */
2791 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2792 !skb->len && !state->split &&
2793 cb->min_dump_alloc < 4096) {
2794 cb->min_dump_alloc = 4096;
2795 state->split_start = 0;
2796 rtnl_unlock();
2797 return 1;
2798 }
2799 idx--;
2800 break;
2801 }
2802 } while (state->split_start > 0);
2803 break;
2804 }
2805 rtnl_unlock();
2806
2807 state->start = idx;
2808
2809 return skb->len;
2810 }
2811
nl80211_dump_wiphy_done(struct netlink_callback * cb)2812 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2813 {
2814 kfree((void *)cb->args[0]);
2815 return 0;
2816 }
2817
nl80211_get_wiphy(struct sk_buff * skb,struct genl_info * info)2818 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2819 {
2820 struct sk_buff *msg;
2821 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2822 struct nl80211_dump_wiphy_state state = {};
2823
2824 msg = nlmsg_new(4096, GFP_KERNEL);
2825 if (!msg)
2826 return -ENOMEM;
2827
2828 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2829 info->snd_portid, info->snd_seq, 0,
2830 &state) < 0) {
2831 nlmsg_free(msg);
2832 return -ENOBUFS;
2833 }
2834
2835 return genlmsg_reply(msg, info);
2836 }
2837
2838 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2839 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2840 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2841 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2842 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2843 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2844 };
2845
parse_txq_params(struct nlattr * tb[],struct ieee80211_txq_params * txq_params)2846 static int parse_txq_params(struct nlattr *tb[],
2847 struct ieee80211_txq_params *txq_params)
2848 {
2849 u8 ac;
2850
2851 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2852 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2853 !tb[NL80211_TXQ_ATTR_AIFS])
2854 return -EINVAL;
2855
2856 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2857 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2858 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2859 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2860 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2861
2862 if (ac >= NL80211_NUM_ACS)
2863 return -EINVAL;
2864 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2865 return 0;
2866 }
2867
nl80211_can_set_dev_channel(struct wireless_dev * wdev)2868 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2869 {
2870 /*
2871 * You can only set the channel explicitly for WDS interfaces,
2872 * all others have their channel managed via their respective
2873 * "establish a connection" command (connect, join, ...)
2874 *
2875 * For AP/GO and mesh mode, the channel can be set with the
2876 * channel userspace API, but is only stored and passed to the
2877 * low-level driver when the AP starts or the mesh is joined.
2878 * This is for backward compatibility, userspace can also give
2879 * the channel in the start-ap or join-mesh commands instead.
2880 *
2881 * Monitors are special as they are normally slaved to
2882 * whatever else is going on, so they have their own special
2883 * operation to set the monitor channel if possible.
2884 */
2885 return !wdev ||
2886 wdev->iftype == NL80211_IFTYPE_AP ||
2887 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2888 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2889 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2890 }
2891
nl80211_parse_chandef(struct cfg80211_registered_device * rdev,struct genl_info * info,struct cfg80211_chan_def * chandef)2892 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2893 struct genl_info *info,
2894 struct cfg80211_chan_def *chandef)
2895 {
2896 struct netlink_ext_ack *extack = info->extack;
2897 struct nlattr **attrs = info->attrs;
2898 u32 control_freq;
2899
2900 if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2901 return -EINVAL;
2902
2903 control_freq = MHZ_TO_KHZ(
2904 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
2905 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
2906 control_freq +=
2907 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
2908
2909 memset(chandef, 0, sizeof(*chandef));
2910 chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
2911 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2912 chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
2913 chandef->freq1_offset = control_freq % 1000;
2914 chandef->center_freq2 = 0;
2915
2916 /* Primary channel not allowed */
2917 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2918 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2919 "Channel is disabled");
2920 return -EINVAL;
2921 }
2922
2923 if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2924 enum nl80211_channel_type chantype;
2925
2926 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2927
2928 switch (chantype) {
2929 case NL80211_CHAN_NO_HT:
2930 case NL80211_CHAN_HT20:
2931 case NL80211_CHAN_HT40PLUS:
2932 case NL80211_CHAN_HT40MINUS:
2933 cfg80211_chandef_create(chandef, chandef->chan,
2934 chantype);
2935 /* user input for center_freq is incorrect */
2936 if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2937 chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2938 NL_SET_ERR_MSG_ATTR(extack,
2939 attrs[NL80211_ATTR_CENTER_FREQ1],
2940 "bad center frequency 1");
2941 return -EINVAL;
2942 }
2943 /* center_freq2 must be zero */
2944 if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2945 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2946 NL_SET_ERR_MSG_ATTR(extack,
2947 attrs[NL80211_ATTR_CENTER_FREQ2],
2948 "center frequency 2 can't be used");
2949 return -EINVAL;
2950 }
2951 break;
2952 default:
2953 NL_SET_ERR_MSG_ATTR(extack,
2954 attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2955 "invalid channel type");
2956 return -EINVAL;
2957 }
2958 } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2959 chandef->width =
2960 nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2961 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
2962 /* User input error for channel width doesn't match channel */
2963 if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
2964 NL_SET_ERR_MSG_ATTR(extack,
2965 attrs[NL80211_ATTR_CHANNEL_WIDTH],
2966 "bad channel width");
2967 return -EINVAL;
2968 }
2969 }
2970 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
2971 chandef->center_freq1 =
2972 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2973 if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
2974 chandef->freq1_offset = nla_get_u32(
2975 attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
2976 else
2977 chandef->freq1_offset = 0;
2978 }
2979 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2980 chandef->center_freq2 =
2981 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2982 }
2983
2984 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2985 chandef->edmg.channels =
2986 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2987
2988 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2989 chandef->edmg.bw_config =
2990 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2991 } else {
2992 chandef->edmg.bw_config = 0;
2993 chandef->edmg.channels = 0;
2994 }
2995
2996 if (!cfg80211_chandef_valid(chandef)) {
2997 NL_SET_ERR_MSG(extack, "invalid channel definition");
2998 return -EINVAL;
2999 }
3000
3001 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3002 IEEE80211_CHAN_DISABLED)) {
3003 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3004 return -EINVAL;
3005 }
3006
3007 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3008 chandef->width == NL80211_CHAN_WIDTH_10) &&
3009 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3010 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3011 return -EINVAL;
3012 }
3013
3014 return 0;
3015 }
3016
__nl80211_set_channel(struct cfg80211_registered_device * rdev,struct net_device * dev,struct genl_info * info)3017 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3018 struct net_device *dev,
3019 struct genl_info *info)
3020 {
3021 struct cfg80211_chan_def chandef;
3022 int result;
3023 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3024 struct wireless_dev *wdev = NULL;
3025
3026 if (dev)
3027 wdev = dev->ieee80211_ptr;
3028 if (!nl80211_can_set_dev_channel(wdev))
3029 return -EOPNOTSUPP;
3030 if (wdev)
3031 iftype = wdev->iftype;
3032
3033 result = nl80211_parse_chandef(rdev, info, &chandef);
3034 if (result)
3035 return result;
3036
3037 switch (iftype) {
3038 case NL80211_IFTYPE_AP:
3039 case NL80211_IFTYPE_P2P_GO:
3040 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3041 iftype)) {
3042 result = -EINVAL;
3043 break;
3044 }
3045 if (wdev->beacon_interval) {
3046 if (!dev || !rdev->ops->set_ap_chanwidth ||
3047 !(rdev->wiphy.features &
3048 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
3049 result = -EBUSY;
3050 break;
3051 }
3052
3053 /* Only allow dynamic channel width changes */
3054 if (chandef.chan != wdev->preset_chandef.chan) {
3055 result = -EBUSY;
3056 break;
3057 }
3058 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
3059 if (result)
3060 break;
3061 }
3062 wdev->preset_chandef = chandef;
3063 result = 0;
3064 break;
3065 case NL80211_IFTYPE_MESH_POINT:
3066 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3067 break;
3068 case NL80211_IFTYPE_MONITOR:
3069 result = cfg80211_set_monitor_channel(rdev, &chandef);
3070 break;
3071 default:
3072 result = -EINVAL;
3073 }
3074
3075 return result;
3076 }
3077
nl80211_set_channel(struct sk_buff * skb,struct genl_info * info)3078 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3079 {
3080 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3081 struct net_device *netdev = info->user_ptr[1];
3082
3083 return __nl80211_set_channel(rdev, netdev, info);
3084 }
3085
nl80211_set_wds_peer(struct sk_buff * skb,struct genl_info * info)3086 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
3087 {
3088 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3089 struct net_device *dev = info->user_ptr[1];
3090 struct wireless_dev *wdev = dev->ieee80211_ptr;
3091 const u8 *bssid;
3092
3093 if (!info->attrs[NL80211_ATTR_MAC])
3094 return -EINVAL;
3095
3096 if (netif_running(dev))
3097 return -EBUSY;
3098
3099 if (!rdev->ops->set_wds_peer)
3100 return -EOPNOTSUPP;
3101
3102 if (wdev->iftype != NL80211_IFTYPE_WDS)
3103 return -EOPNOTSUPP;
3104
3105 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3106 return rdev_set_wds_peer(rdev, dev, bssid);
3107 }
3108
nl80211_set_wiphy(struct sk_buff * skb,struct genl_info * info)3109 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3110 {
3111 struct cfg80211_registered_device *rdev;
3112 struct net_device *netdev = NULL;
3113 struct wireless_dev *wdev;
3114 int result = 0, rem_txq_params = 0;
3115 struct nlattr *nl_txq_params;
3116 u32 changed;
3117 u8 retry_short = 0, retry_long = 0;
3118 u32 frag_threshold = 0, rts_threshold = 0;
3119 u8 coverage_class = 0;
3120 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3121
3122 ASSERT_RTNL();
3123
3124 /*
3125 * Try to find the wiphy and netdev. Normally this
3126 * function shouldn't need the netdev, but this is
3127 * done for backward compatibility -- previously
3128 * setting the channel was done per wiphy, but now
3129 * it is per netdev. Previous userland like hostapd
3130 * also passed a netdev to set_wiphy, so that it is
3131 * possible to let that go to the right netdev!
3132 */
3133
3134 if (info->attrs[NL80211_ATTR_IFINDEX]) {
3135 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3136
3137 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3138 if (netdev && netdev->ieee80211_ptr)
3139 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3140 else
3141 netdev = NULL;
3142 }
3143
3144 if (!netdev) {
3145 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3146 info->attrs);
3147 if (IS_ERR(rdev))
3148 return PTR_ERR(rdev);
3149 wdev = NULL;
3150 netdev = NULL;
3151 result = 0;
3152 } else
3153 wdev = netdev->ieee80211_ptr;
3154
3155 /*
3156 * end workaround code, by now the rdev is available
3157 * and locked, and wdev may or may not be NULL.
3158 */
3159
3160 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3161 result = cfg80211_dev_rename(
3162 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3163
3164 if (result)
3165 return result;
3166
3167 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3168 struct ieee80211_txq_params txq_params;
3169 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3170
3171 if (!rdev->ops->set_txq_params)
3172 return -EOPNOTSUPP;
3173
3174 if (!netdev)
3175 return -EINVAL;
3176
3177 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3178 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3179 return -EINVAL;
3180
3181 if (!netif_running(netdev))
3182 return -ENETDOWN;
3183
3184 nla_for_each_nested(nl_txq_params,
3185 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3186 rem_txq_params) {
3187 result = nla_parse_nested_deprecated(tb,
3188 NL80211_TXQ_ATTR_MAX,
3189 nl_txq_params,
3190 txq_params_policy,
3191 info->extack);
3192 if (result)
3193 return result;
3194 result = parse_txq_params(tb, &txq_params);
3195 if (result)
3196 return result;
3197
3198 result = rdev_set_txq_params(rdev, netdev,
3199 &txq_params);
3200 if (result)
3201 return result;
3202 }
3203 }
3204
3205 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3206 result = __nl80211_set_channel(
3207 rdev,
3208 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3209 info);
3210 if (result)
3211 return result;
3212 }
3213
3214 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3215 struct wireless_dev *txp_wdev = wdev;
3216 enum nl80211_tx_power_setting type;
3217 int idx, mbm = 0;
3218
3219 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3220 txp_wdev = NULL;
3221
3222 if (!rdev->ops->set_tx_power)
3223 return -EOPNOTSUPP;
3224
3225 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3226 type = nla_get_u32(info->attrs[idx]);
3227
3228 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3229 (type != NL80211_TX_POWER_AUTOMATIC))
3230 return -EINVAL;
3231
3232 if (type != NL80211_TX_POWER_AUTOMATIC) {
3233 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3234 mbm = nla_get_u32(info->attrs[idx]);
3235 }
3236
3237 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3238 if (result)
3239 return result;
3240 }
3241
3242 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3243 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3244 u32 tx_ant, rx_ant;
3245
3246 if ((!rdev->wiphy.available_antennas_tx &&
3247 !rdev->wiphy.available_antennas_rx) ||
3248 !rdev->ops->set_antenna)
3249 return -EOPNOTSUPP;
3250
3251 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3252 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3253
3254 /* reject antenna configurations which don't match the
3255 * available antenna masks, except for the "all" mask */
3256 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3257 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3258 return -EINVAL;
3259
3260 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3261 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3262
3263 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3264 if (result)
3265 return result;
3266 }
3267
3268 changed = 0;
3269
3270 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3271 retry_short = nla_get_u8(
3272 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3273
3274 changed |= WIPHY_PARAM_RETRY_SHORT;
3275 }
3276
3277 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3278 retry_long = nla_get_u8(
3279 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3280
3281 changed |= WIPHY_PARAM_RETRY_LONG;
3282 }
3283
3284 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3285 frag_threshold = nla_get_u32(
3286 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3287 if (frag_threshold < 256)
3288 return -EINVAL;
3289
3290 if (frag_threshold != (u32) -1) {
3291 /*
3292 * Fragments (apart from the last one) are required to
3293 * have even length. Make the fragmentation code
3294 * simpler by stripping LSB should someone try to use
3295 * odd threshold value.
3296 */
3297 frag_threshold &= ~0x1;
3298 }
3299 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3300 }
3301
3302 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3303 rts_threshold = nla_get_u32(
3304 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3305 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3306 }
3307
3308 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3309 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3310 return -EINVAL;
3311
3312 coverage_class = nla_get_u8(
3313 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3314 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3315 }
3316
3317 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3318 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3319 return -EOPNOTSUPP;
3320
3321 changed |= WIPHY_PARAM_DYN_ACK;
3322 }
3323
3324 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3325 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3326 NL80211_EXT_FEATURE_TXQS))
3327 return -EOPNOTSUPP;
3328 txq_limit = nla_get_u32(
3329 info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3330 changed |= WIPHY_PARAM_TXQ_LIMIT;
3331 }
3332
3333 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3334 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3335 NL80211_EXT_FEATURE_TXQS))
3336 return -EOPNOTSUPP;
3337 txq_memory_limit = nla_get_u32(
3338 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3339 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3340 }
3341
3342 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3343 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3344 NL80211_EXT_FEATURE_TXQS))
3345 return -EOPNOTSUPP;
3346 txq_quantum = nla_get_u32(
3347 info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3348 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3349 }
3350
3351 if (changed) {
3352 u8 old_retry_short, old_retry_long;
3353 u32 old_frag_threshold, old_rts_threshold;
3354 u8 old_coverage_class;
3355 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3356
3357 if (!rdev->ops->set_wiphy_params)
3358 return -EOPNOTSUPP;
3359
3360 old_retry_short = rdev->wiphy.retry_short;
3361 old_retry_long = rdev->wiphy.retry_long;
3362 old_frag_threshold = rdev->wiphy.frag_threshold;
3363 old_rts_threshold = rdev->wiphy.rts_threshold;
3364 old_coverage_class = rdev->wiphy.coverage_class;
3365 old_txq_limit = rdev->wiphy.txq_limit;
3366 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3367 old_txq_quantum = rdev->wiphy.txq_quantum;
3368
3369 if (changed & WIPHY_PARAM_RETRY_SHORT)
3370 rdev->wiphy.retry_short = retry_short;
3371 if (changed & WIPHY_PARAM_RETRY_LONG)
3372 rdev->wiphy.retry_long = retry_long;
3373 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3374 rdev->wiphy.frag_threshold = frag_threshold;
3375 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3376 rdev->wiphy.rts_threshold = rts_threshold;
3377 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3378 rdev->wiphy.coverage_class = coverage_class;
3379 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3380 rdev->wiphy.txq_limit = txq_limit;
3381 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3382 rdev->wiphy.txq_memory_limit = txq_memory_limit;
3383 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3384 rdev->wiphy.txq_quantum = txq_quantum;
3385
3386 result = rdev_set_wiphy_params(rdev, changed);
3387 if (result) {
3388 rdev->wiphy.retry_short = old_retry_short;
3389 rdev->wiphy.retry_long = old_retry_long;
3390 rdev->wiphy.frag_threshold = old_frag_threshold;
3391 rdev->wiphy.rts_threshold = old_rts_threshold;
3392 rdev->wiphy.coverage_class = old_coverage_class;
3393 rdev->wiphy.txq_limit = old_txq_limit;
3394 rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3395 rdev->wiphy.txq_quantum = old_txq_quantum;
3396 return result;
3397 }
3398 }
3399 return 0;
3400 }
3401
nl80211_send_chandef(struct sk_buff * msg,const struct cfg80211_chan_def * chandef)3402 static int nl80211_send_chandef(struct sk_buff *msg,
3403 const struct cfg80211_chan_def *chandef)
3404 {
3405 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3406 return -EINVAL;
3407
3408 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3409 chandef->chan->center_freq))
3410 return -ENOBUFS;
3411 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3412 chandef->chan->freq_offset))
3413 return -ENOBUFS;
3414 switch (chandef->width) {
3415 case NL80211_CHAN_WIDTH_20_NOHT:
3416 case NL80211_CHAN_WIDTH_20:
3417 case NL80211_CHAN_WIDTH_40:
3418 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3419 cfg80211_get_chandef_type(chandef)))
3420 return -ENOBUFS;
3421 break;
3422 default:
3423 break;
3424 }
3425 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3426 return -ENOBUFS;
3427 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3428 return -ENOBUFS;
3429 if (chandef->center_freq2 &&
3430 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3431 return -ENOBUFS;
3432 return 0;
3433 }
3434
nl80211_send_iface(struct sk_buff * msg,u32 portid,u32 seq,int flags,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,enum nl80211_commands cmd)3435 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3436 struct cfg80211_registered_device *rdev,
3437 struct wireless_dev *wdev,
3438 enum nl80211_commands cmd)
3439 {
3440 struct net_device *dev = wdev->netdev;
3441 void *hdr;
3442
3443 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3444 cmd != NL80211_CMD_DEL_INTERFACE &&
3445 cmd != NL80211_CMD_SET_INTERFACE);
3446
3447 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3448 if (!hdr)
3449 return -1;
3450
3451 if (dev &&
3452 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3453 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3454 goto nla_put_failure;
3455
3456 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3457 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3458 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3459 NL80211_ATTR_PAD) ||
3460 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3461 nla_put_u32(msg, NL80211_ATTR_GENERATION,
3462 rdev->devlist_generation ^
3463 (cfg80211_rdev_list_generation << 2)) ||
3464 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3465 goto nla_put_failure;
3466
3467 if (rdev->ops->get_channel) {
3468 int ret;
3469 struct cfg80211_chan_def chandef = {};
3470
3471 ret = rdev_get_channel(rdev, wdev, &chandef);
3472 if (ret == 0) {
3473 if (nl80211_send_chandef(msg, &chandef))
3474 goto nla_put_failure;
3475 }
3476 }
3477
3478 if (rdev->ops->get_tx_power) {
3479 int dbm, ret;
3480
3481 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3482 if (ret == 0 &&
3483 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3484 DBM_TO_MBM(dbm)))
3485 goto nla_put_failure;
3486 }
3487
3488 wdev_lock(wdev);
3489 switch (wdev->iftype) {
3490 case NL80211_IFTYPE_AP:
3491 case NL80211_IFTYPE_P2P_GO:
3492 if (wdev->ssid_len &&
3493 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3494 goto nla_put_failure_locked;
3495 break;
3496 case NL80211_IFTYPE_STATION:
3497 case NL80211_IFTYPE_P2P_CLIENT:
3498 case NL80211_IFTYPE_ADHOC: {
3499 const u8 *ssid_ie;
3500 if (!wdev->current_bss)
3501 break;
3502 rcu_read_lock();
3503 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3504 WLAN_EID_SSID);
3505 if (ssid_ie &&
3506 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3507 goto nla_put_failure_rcu_locked;
3508 rcu_read_unlock();
3509 break;
3510 }
3511 default:
3512 /* nothing */
3513 break;
3514 }
3515 wdev_unlock(wdev);
3516
3517 if (rdev->ops->get_txq_stats) {
3518 struct cfg80211_txq_stats txqstats = {};
3519 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3520
3521 if (ret == 0 &&
3522 !nl80211_put_txq_stats(msg, &txqstats,
3523 NL80211_ATTR_TXQ_STATS))
3524 goto nla_put_failure;
3525 }
3526
3527 genlmsg_end(msg, hdr);
3528 return 0;
3529
3530 nla_put_failure_rcu_locked:
3531 rcu_read_unlock();
3532 nla_put_failure_locked:
3533 wdev_unlock(wdev);
3534 nla_put_failure:
3535 genlmsg_cancel(msg, hdr);
3536 return -EMSGSIZE;
3537 }
3538
nl80211_dump_interface(struct sk_buff * skb,struct netlink_callback * cb)3539 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3540 {
3541 int wp_idx = 0;
3542 int if_idx = 0;
3543 int wp_start = cb->args[0];
3544 int if_start = cb->args[1];
3545 int filter_wiphy = -1;
3546 struct cfg80211_registered_device *rdev;
3547 struct wireless_dev *wdev;
3548 int ret;
3549
3550 rtnl_lock();
3551 if (!cb->args[2]) {
3552 struct nl80211_dump_wiphy_state state = {
3553 .filter_wiphy = -1,
3554 };
3555
3556 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3557 if (ret)
3558 goto out_unlock;
3559
3560 filter_wiphy = state.filter_wiphy;
3561
3562 /*
3563 * if filtering, set cb->args[2] to +1 since 0 is the default
3564 * value needed to determine that parsing is necessary.
3565 */
3566 if (filter_wiphy >= 0)
3567 cb->args[2] = filter_wiphy + 1;
3568 else
3569 cb->args[2] = -1;
3570 } else if (cb->args[2] > 0) {
3571 filter_wiphy = cb->args[2] - 1;
3572 }
3573
3574 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3575 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3576 continue;
3577 if (wp_idx < wp_start) {
3578 wp_idx++;
3579 continue;
3580 }
3581
3582 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3583 continue;
3584
3585 if_idx = 0;
3586
3587 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3588 if (if_idx < if_start) {
3589 if_idx++;
3590 continue;
3591 }
3592 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3593 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3594 rdev, wdev,
3595 NL80211_CMD_NEW_INTERFACE) < 0) {
3596 goto out;
3597 }
3598 if_idx++;
3599 }
3600
3601 wp_idx++;
3602 }
3603 out:
3604 cb->args[0] = wp_idx;
3605 cb->args[1] = if_idx;
3606
3607 ret = skb->len;
3608 out_unlock:
3609 rtnl_unlock();
3610
3611 return ret;
3612 }
3613
nl80211_get_interface(struct sk_buff * skb,struct genl_info * info)3614 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3615 {
3616 struct sk_buff *msg;
3617 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3618 struct wireless_dev *wdev = info->user_ptr[1];
3619
3620 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3621 if (!msg)
3622 return -ENOMEM;
3623
3624 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3625 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3626 nlmsg_free(msg);
3627 return -ENOBUFS;
3628 }
3629
3630 return genlmsg_reply(msg, info);
3631 }
3632
3633 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3634 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3635 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3636 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3637 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3638 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3639 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3640 };
3641
parse_monitor_flags(struct nlattr * nla,u32 * mntrflags)3642 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3643 {
3644 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3645 int flag;
3646
3647 *mntrflags = 0;
3648
3649 if (!nla)
3650 return -EINVAL;
3651
3652 if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3653 return -EINVAL;
3654
3655 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3656 if (flags[flag])
3657 *mntrflags |= (1<<flag);
3658
3659 *mntrflags |= MONITOR_FLAG_CHANGED;
3660
3661 return 0;
3662 }
3663
nl80211_parse_mon_options(struct cfg80211_registered_device * rdev,enum nl80211_iftype type,struct genl_info * info,struct vif_params * params)3664 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3665 enum nl80211_iftype type,
3666 struct genl_info *info,
3667 struct vif_params *params)
3668 {
3669 bool change = false;
3670 int err;
3671
3672 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3673 if (type != NL80211_IFTYPE_MONITOR)
3674 return -EINVAL;
3675
3676 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3677 ¶ms->flags);
3678 if (err)
3679 return err;
3680
3681 change = true;
3682 }
3683
3684 if (params->flags & MONITOR_FLAG_ACTIVE &&
3685 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3686 return -EOPNOTSUPP;
3687
3688 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3689 const u8 *mumimo_groups;
3690 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3691
3692 if (type != NL80211_IFTYPE_MONITOR)
3693 return -EINVAL;
3694
3695 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3696 return -EOPNOTSUPP;
3697
3698 mumimo_groups =
3699 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3700
3701 /* bits 0 and 63 are reserved and must be zero */
3702 if ((mumimo_groups[0] & BIT(0)) ||
3703 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3704 return -EINVAL;
3705
3706 params->vht_mumimo_groups = mumimo_groups;
3707 change = true;
3708 }
3709
3710 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3711 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3712
3713 if (type != NL80211_IFTYPE_MONITOR)
3714 return -EINVAL;
3715
3716 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3717 return -EOPNOTSUPP;
3718
3719 params->vht_mumimo_follow_addr =
3720 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3721 change = true;
3722 }
3723
3724 return change ? 1 : 0;
3725 }
3726
nl80211_valid_4addr(struct cfg80211_registered_device * rdev,struct net_device * netdev,u8 use_4addr,enum nl80211_iftype iftype)3727 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3728 struct net_device *netdev, u8 use_4addr,
3729 enum nl80211_iftype iftype)
3730 {
3731 if (!use_4addr) {
3732 if (netdev && netif_is_bridge_port(netdev))
3733 return -EBUSY;
3734 return 0;
3735 }
3736
3737 switch (iftype) {
3738 case NL80211_IFTYPE_AP_VLAN:
3739 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3740 return 0;
3741 break;
3742 case NL80211_IFTYPE_STATION:
3743 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3744 return 0;
3745 break;
3746 default:
3747 break;
3748 }
3749
3750 return -EOPNOTSUPP;
3751 }
3752
nl80211_set_interface(struct sk_buff * skb,struct genl_info * info)3753 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3754 {
3755 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3756 struct vif_params params;
3757 int err;
3758 enum nl80211_iftype otype, ntype;
3759 struct net_device *dev = info->user_ptr[1];
3760 bool change = false;
3761
3762 memset(¶ms, 0, sizeof(params));
3763
3764 otype = ntype = dev->ieee80211_ptr->iftype;
3765
3766 if (info->attrs[NL80211_ATTR_IFTYPE]) {
3767 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3768 if (otype != ntype)
3769 change = true;
3770 }
3771
3772 if (info->attrs[NL80211_ATTR_MESH_ID]) {
3773 struct wireless_dev *wdev = dev->ieee80211_ptr;
3774
3775 if (ntype != NL80211_IFTYPE_MESH_POINT)
3776 return -EINVAL;
3777 if (netif_running(dev))
3778 return -EBUSY;
3779
3780 wdev_lock(wdev);
3781 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3782 IEEE80211_MAX_MESH_ID_LEN);
3783 wdev->mesh_id_up_len =
3784 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3785 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3786 wdev->mesh_id_up_len);
3787 wdev_unlock(wdev);
3788 }
3789
3790 if (info->attrs[NL80211_ATTR_4ADDR]) {
3791 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3792 change = true;
3793 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3794 if (err)
3795 return err;
3796 } else {
3797 params.use_4addr = -1;
3798 }
3799
3800 err = nl80211_parse_mon_options(rdev, ntype, info, ¶ms);
3801 if (err < 0)
3802 return err;
3803 if (err > 0)
3804 change = true;
3805
3806 if (change)
3807 err = cfg80211_change_iface(rdev, dev, ntype, ¶ms);
3808 else
3809 err = 0;
3810
3811 if (!err && params.use_4addr != -1)
3812 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3813
3814 if (change && !err) {
3815 struct wireless_dev *wdev = dev->ieee80211_ptr;
3816
3817 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3818 }
3819
3820 return err;
3821 }
3822
nl80211_new_interface(struct sk_buff * skb,struct genl_info * info)3823 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3824 {
3825 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3826 struct vif_params params;
3827 struct wireless_dev *wdev;
3828 struct sk_buff *msg;
3829 int err;
3830 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3831
3832 /* to avoid failing a new interface creation due to pending removal */
3833 cfg80211_destroy_ifaces(rdev);
3834
3835 memset(¶ms, 0, sizeof(params));
3836
3837 if (!info->attrs[NL80211_ATTR_IFNAME])
3838 return -EINVAL;
3839
3840 if (info->attrs[NL80211_ATTR_IFTYPE])
3841 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3842
3843 if (!rdev->ops->add_virtual_intf)
3844 return -EOPNOTSUPP;
3845
3846 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3847 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3848 info->attrs[NL80211_ATTR_MAC]) {
3849 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3850 ETH_ALEN);
3851 if (!is_valid_ether_addr(params.macaddr))
3852 return -EADDRNOTAVAIL;
3853 }
3854
3855 if (info->attrs[NL80211_ATTR_4ADDR]) {
3856 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3857 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3858 if (err)
3859 return err;
3860 }
3861
3862 if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3863 return -EOPNOTSUPP;
3864
3865 err = nl80211_parse_mon_options(rdev, type, info, ¶ms);
3866 if (err < 0)
3867 return err;
3868
3869 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3870 if (!msg)
3871 return -ENOMEM;
3872
3873 wdev = rdev_add_virtual_intf(rdev,
3874 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3875 NET_NAME_USER, type, ¶ms);
3876 if (WARN_ON(!wdev)) {
3877 nlmsg_free(msg);
3878 return -EPROTO;
3879 } else if (IS_ERR(wdev)) {
3880 nlmsg_free(msg);
3881 return PTR_ERR(wdev);
3882 }
3883
3884 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3885 wdev->owner_nlportid = info->snd_portid;
3886
3887 switch (type) {
3888 case NL80211_IFTYPE_MESH_POINT:
3889 if (!info->attrs[NL80211_ATTR_MESH_ID])
3890 break;
3891 wdev_lock(wdev);
3892 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3893 IEEE80211_MAX_MESH_ID_LEN);
3894 wdev->mesh_id_up_len =
3895 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3896 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3897 wdev->mesh_id_up_len);
3898 wdev_unlock(wdev);
3899 break;
3900 case NL80211_IFTYPE_NAN:
3901 case NL80211_IFTYPE_P2P_DEVICE:
3902 /*
3903 * P2P Device and NAN do not have a netdev, so don't go
3904 * through the netdev notifier and must be added here
3905 */
3906 cfg80211_init_wdev(wdev);
3907 cfg80211_register_wdev(rdev, wdev);
3908 break;
3909 default:
3910 break;
3911 }
3912
3913 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3914 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3915 nlmsg_free(msg);
3916 return -ENOBUFS;
3917 }
3918
3919 return genlmsg_reply(msg, info);
3920 }
3921
nl80211_del_interface(struct sk_buff * skb,struct genl_info * info)3922 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3923 {
3924 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3925 struct wireless_dev *wdev = info->user_ptr[1];
3926
3927 if (!rdev->ops->del_virtual_intf)
3928 return -EOPNOTSUPP;
3929
3930 /*
3931 * If we remove a wireless device without a netdev then clear
3932 * user_ptr[1] so that nl80211_post_doit won't dereference it
3933 * to check if it needs to do dev_put(). Otherwise it crashes
3934 * since the wdev has been freed, unlike with a netdev where
3935 * we need the dev_put() for the netdev to really be freed.
3936 */
3937 if (!wdev->netdev)
3938 info->user_ptr[1] = NULL;
3939
3940 return rdev_del_virtual_intf(rdev, wdev);
3941 }
3942
nl80211_set_noack_map(struct sk_buff * skb,struct genl_info * info)3943 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3944 {
3945 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3946 struct net_device *dev = info->user_ptr[1];
3947 u16 noack_map;
3948
3949 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3950 return -EINVAL;
3951
3952 if (!rdev->ops->set_noack_map)
3953 return -EOPNOTSUPP;
3954
3955 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3956
3957 return rdev_set_noack_map(rdev, dev, noack_map);
3958 }
3959
3960 struct get_key_cookie {
3961 struct sk_buff *msg;
3962 int error;
3963 int idx;
3964 };
3965
get_key_callback(void * c,struct key_params * params)3966 static void get_key_callback(void *c, struct key_params *params)
3967 {
3968 struct nlattr *key;
3969 struct get_key_cookie *cookie = c;
3970
3971 if ((params->key &&
3972 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3973 params->key_len, params->key)) ||
3974 (params->seq &&
3975 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3976 params->seq_len, params->seq)) ||
3977 (params->cipher &&
3978 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3979 params->cipher)))
3980 goto nla_put_failure;
3981
3982 key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3983 if (!key)
3984 goto nla_put_failure;
3985
3986 if ((params->key &&
3987 nla_put(cookie->msg, NL80211_KEY_DATA,
3988 params->key_len, params->key)) ||
3989 (params->seq &&
3990 nla_put(cookie->msg, NL80211_KEY_SEQ,
3991 params->seq_len, params->seq)) ||
3992 (params->cipher &&
3993 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3994 params->cipher)))
3995 goto nla_put_failure;
3996
3997 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3998 goto nla_put_failure;
3999
4000 nla_nest_end(cookie->msg, key);
4001
4002 return;
4003 nla_put_failure:
4004 cookie->error = 1;
4005 }
4006
nl80211_get_key(struct sk_buff * skb,struct genl_info * info)4007 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4008 {
4009 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4010 int err;
4011 struct net_device *dev = info->user_ptr[1];
4012 u8 key_idx = 0;
4013 const u8 *mac_addr = NULL;
4014 bool pairwise;
4015 struct get_key_cookie cookie = {
4016 .error = 0,
4017 };
4018 void *hdr;
4019 struct sk_buff *msg;
4020 bool bigtk_support = false;
4021
4022 if (wiphy_ext_feature_isset(&rdev->wiphy,
4023 NL80211_EXT_FEATURE_BEACON_PROTECTION))
4024 bigtk_support = true;
4025
4026 if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4027 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4028 wiphy_ext_feature_isset(&rdev->wiphy,
4029 NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4030 bigtk_support = true;
4031
4032 if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4033 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4034
4035 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4036 GENL_SET_ERR_MSG(info, "BIGTK not supported");
4037 return -EINVAL;
4038 }
4039 }
4040
4041 if (info->attrs[NL80211_ATTR_MAC])
4042 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4043
4044 pairwise = !!mac_addr;
4045 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4046 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4047
4048 if (kt != NL80211_KEYTYPE_GROUP &&
4049 kt != NL80211_KEYTYPE_PAIRWISE)
4050 return -EINVAL;
4051 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4052 }
4053
4054 if (!rdev->ops->get_key)
4055 return -EOPNOTSUPP;
4056
4057 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4058 return -ENOENT;
4059
4060 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4061 if (!msg)
4062 return -ENOMEM;
4063
4064 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4065 NL80211_CMD_NEW_KEY);
4066 if (!hdr)
4067 goto nla_put_failure;
4068
4069 cookie.msg = msg;
4070 cookie.idx = key_idx;
4071
4072 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4073 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4074 goto nla_put_failure;
4075 if (mac_addr &&
4076 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4077 goto nla_put_failure;
4078
4079 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4080 get_key_callback);
4081
4082 if (err)
4083 goto free_msg;
4084
4085 if (cookie.error)
4086 goto nla_put_failure;
4087
4088 genlmsg_end(msg, hdr);
4089 return genlmsg_reply(msg, info);
4090
4091 nla_put_failure:
4092 err = -ENOBUFS;
4093 free_msg:
4094 nlmsg_free(msg);
4095 return err;
4096 }
4097
nl80211_set_key(struct sk_buff * skb,struct genl_info * info)4098 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4099 {
4100 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4101 struct key_parse key;
4102 int err;
4103 struct net_device *dev = info->user_ptr[1];
4104
4105 err = nl80211_parse_key(info, &key);
4106 if (err)
4107 return err;
4108
4109 if (key.idx < 0)
4110 return -EINVAL;
4111
4112 /* Only support setting default key and
4113 * Extended Key ID action NL80211_KEY_SET_TX.
4114 */
4115 if (!key.def && !key.defmgmt && !key.defbeacon &&
4116 !(key.p.mode == NL80211_KEY_SET_TX))
4117 return -EINVAL;
4118
4119 wdev_lock(dev->ieee80211_ptr);
4120
4121 if (key.def) {
4122 if (!rdev->ops->set_default_key) {
4123 err = -EOPNOTSUPP;
4124 goto out;
4125 }
4126
4127 err = nl80211_key_allowed(dev->ieee80211_ptr);
4128 if (err)
4129 goto out;
4130
4131 err = rdev_set_default_key(rdev, dev, key.idx,
4132 key.def_uni, key.def_multi);
4133
4134 if (err)
4135 goto out;
4136
4137 #ifdef CONFIG_CFG80211_WEXT
4138 dev->ieee80211_ptr->wext.default_key = key.idx;
4139 #endif
4140 } else if (key.defmgmt) {
4141 if (key.def_uni || !key.def_multi) {
4142 err = -EINVAL;
4143 goto out;
4144 }
4145
4146 if (!rdev->ops->set_default_mgmt_key) {
4147 err = -EOPNOTSUPP;
4148 goto out;
4149 }
4150
4151 err = nl80211_key_allowed(dev->ieee80211_ptr);
4152 if (err)
4153 goto out;
4154
4155 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4156 if (err)
4157 goto out;
4158
4159 #ifdef CONFIG_CFG80211_WEXT
4160 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4161 #endif
4162 } else if (key.defbeacon) {
4163 if (key.def_uni || !key.def_multi) {
4164 err = -EINVAL;
4165 goto out;
4166 }
4167
4168 if (!rdev->ops->set_default_beacon_key) {
4169 err = -EOPNOTSUPP;
4170 goto out;
4171 }
4172
4173 err = nl80211_key_allowed(dev->ieee80211_ptr);
4174 if (err)
4175 goto out;
4176
4177 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4178 if (err)
4179 goto out;
4180 } else if (key.p.mode == NL80211_KEY_SET_TX &&
4181 wiphy_ext_feature_isset(&rdev->wiphy,
4182 NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4183 u8 *mac_addr = NULL;
4184
4185 if (info->attrs[NL80211_ATTR_MAC])
4186 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4187
4188 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4189 err = -EINVAL;
4190 goto out;
4191 }
4192
4193 err = rdev_add_key(rdev, dev, key.idx,
4194 NL80211_KEYTYPE_PAIRWISE,
4195 mac_addr, &key.p);
4196 } else {
4197 err = -EINVAL;
4198 }
4199 out:
4200 wdev_unlock(dev->ieee80211_ptr);
4201
4202 return err;
4203 }
4204
nl80211_new_key(struct sk_buff * skb,struct genl_info * info)4205 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4206 {
4207 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4208 int err;
4209 struct net_device *dev = info->user_ptr[1];
4210 struct key_parse key;
4211 const u8 *mac_addr = NULL;
4212
4213 err = nl80211_parse_key(info, &key);
4214 if (err)
4215 return err;
4216
4217 if (!key.p.key) {
4218 GENL_SET_ERR_MSG(info, "no key");
4219 return -EINVAL;
4220 }
4221
4222 if (info->attrs[NL80211_ATTR_MAC])
4223 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4224
4225 if (key.type == -1) {
4226 if (mac_addr)
4227 key.type = NL80211_KEYTYPE_PAIRWISE;
4228 else
4229 key.type = NL80211_KEYTYPE_GROUP;
4230 }
4231
4232 /* for now */
4233 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4234 key.type != NL80211_KEYTYPE_GROUP) {
4235 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4236 return -EINVAL;
4237 }
4238
4239 if (key.type == NL80211_KEYTYPE_GROUP &&
4240 info->attrs[NL80211_ATTR_VLAN_ID])
4241 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4242
4243 if (!rdev->ops->add_key)
4244 return -EOPNOTSUPP;
4245
4246 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4247 key.type == NL80211_KEYTYPE_PAIRWISE,
4248 mac_addr)) {
4249 GENL_SET_ERR_MSG(info, "key setting validation failed");
4250 return -EINVAL;
4251 }
4252
4253 wdev_lock(dev->ieee80211_ptr);
4254 err = nl80211_key_allowed(dev->ieee80211_ptr);
4255 if (err)
4256 GENL_SET_ERR_MSG(info, "key not allowed");
4257 if (!err) {
4258 err = rdev_add_key(rdev, dev, key.idx,
4259 key.type == NL80211_KEYTYPE_PAIRWISE,
4260 mac_addr, &key.p);
4261 if (err)
4262 GENL_SET_ERR_MSG(info, "key addition failed");
4263 }
4264 wdev_unlock(dev->ieee80211_ptr);
4265
4266 return err;
4267 }
4268
nl80211_del_key(struct sk_buff * skb,struct genl_info * info)4269 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4270 {
4271 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4272 int err;
4273 struct net_device *dev = info->user_ptr[1];
4274 u8 *mac_addr = NULL;
4275 struct key_parse key;
4276
4277 err = nl80211_parse_key(info, &key);
4278 if (err)
4279 return err;
4280
4281 if (info->attrs[NL80211_ATTR_MAC])
4282 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4283
4284 if (key.type == -1) {
4285 if (mac_addr)
4286 key.type = NL80211_KEYTYPE_PAIRWISE;
4287 else
4288 key.type = NL80211_KEYTYPE_GROUP;
4289 }
4290
4291 /* for now */
4292 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4293 key.type != NL80211_KEYTYPE_GROUP)
4294 return -EINVAL;
4295
4296 if (!cfg80211_valid_key_idx(rdev, key.idx,
4297 key.type == NL80211_KEYTYPE_PAIRWISE))
4298 return -EINVAL;
4299
4300 if (!rdev->ops->del_key)
4301 return -EOPNOTSUPP;
4302
4303 wdev_lock(dev->ieee80211_ptr);
4304 err = nl80211_key_allowed(dev->ieee80211_ptr);
4305
4306 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4307 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4308 err = -ENOENT;
4309
4310 if (!err)
4311 err = rdev_del_key(rdev, dev, key.idx,
4312 key.type == NL80211_KEYTYPE_PAIRWISE,
4313 mac_addr);
4314
4315 #ifdef CONFIG_CFG80211_WEXT
4316 if (!err) {
4317 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4318 dev->ieee80211_ptr->wext.default_key = -1;
4319 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4320 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4321 }
4322 #endif
4323 wdev_unlock(dev->ieee80211_ptr);
4324
4325 return err;
4326 }
4327
4328 /* This function returns an error or the number of nested attributes */
validate_acl_mac_addrs(struct nlattr * nl_attr)4329 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4330 {
4331 struct nlattr *attr;
4332 int n_entries = 0, tmp;
4333
4334 nla_for_each_nested(attr, nl_attr, tmp) {
4335 if (nla_len(attr) != ETH_ALEN)
4336 return -EINVAL;
4337
4338 n_entries++;
4339 }
4340
4341 return n_entries;
4342 }
4343
4344 /*
4345 * This function parses ACL information and allocates memory for ACL data.
4346 * On successful return, the calling function is responsible to free the
4347 * ACL buffer returned by this function.
4348 */
parse_acl_data(struct wiphy * wiphy,struct genl_info * info)4349 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4350 struct genl_info *info)
4351 {
4352 enum nl80211_acl_policy acl_policy;
4353 struct nlattr *attr;
4354 struct cfg80211_acl_data *acl;
4355 int i = 0, n_entries, tmp;
4356
4357 if (!wiphy->max_acl_mac_addrs)
4358 return ERR_PTR(-EOPNOTSUPP);
4359
4360 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4361 return ERR_PTR(-EINVAL);
4362
4363 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4364 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4365 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4366 return ERR_PTR(-EINVAL);
4367
4368 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4369 return ERR_PTR(-EINVAL);
4370
4371 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4372 if (n_entries < 0)
4373 return ERR_PTR(n_entries);
4374
4375 if (n_entries > wiphy->max_acl_mac_addrs)
4376 return ERR_PTR(-ENOTSUPP);
4377
4378 acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4379 if (!acl)
4380 return ERR_PTR(-ENOMEM);
4381
4382 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4383 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4384 i++;
4385 }
4386
4387 acl->n_acl_entries = n_entries;
4388 acl->acl_policy = acl_policy;
4389
4390 return acl;
4391 }
4392
nl80211_set_mac_acl(struct sk_buff * skb,struct genl_info * info)4393 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4394 {
4395 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4396 struct net_device *dev = info->user_ptr[1];
4397 struct cfg80211_acl_data *acl;
4398 int err;
4399
4400 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4401 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4402 return -EOPNOTSUPP;
4403
4404 if (!dev->ieee80211_ptr->beacon_interval)
4405 return -EINVAL;
4406
4407 acl = parse_acl_data(&rdev->wiphy, info);
4408 if (IS_ERR(acl))
4409 return PTR_ERR(acl);
4410
4411 err = rdev_set_mac_acl(rdev, dev, acl);
4412
4413 kfree(acl);
4414
4415 return err;
4416 }
4417
rateset_to_mask(struct ieee80211_supported_band * sband,u8 * rates,u8 rates_len)4418 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4419 u8 *rates, u8 rates_len)
4420 {
4421 u8 i;
4422 u32 mask = 0;
4423
4424 for (i = 0; i < rates_len; i++) {
4425 int rate = (rates[i] & 0x7f) * 5;
4426 int ridx;
4427
4428 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4429 struct ieee80211_rate *srate =
4430 &sband->bitrates[ridx];
4431 if (rate == srate->bitrate) {
4432 mask |= 1 << ridx;
4433 break;
4434 }
4435 }
4436 if (ridx == sband->n_bitrates)
4437 return 0; /* rate not found */
4438 }
4439
4440 return mask;
4441 }
4442
ht_rateset_to_mask(struct ieee80211_supported_band * sband,u8 * rates,u8 rates_len,u8 mcs[IEEE80211_HT_MCS_MASK_LEN])4443 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4444 u8 *rates, u8 rates_len,
4445 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4446 {
4447 u8 i;
4448
4449 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4450
4451 for (i = 0; i < rates_len; i++) {
4452 int ridx, rbit;
4453
4454 ridx = rates[i] / 8;
4455 rbit = BIT(rates[i] % 8);
4456
4457 /* check validity */
4458 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4459 return false;
4460
4461 /* check availability */
4462 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4463 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4464 mcs[ridx] |= rbit;
4465 else
4466 return false;
4467 }
4468
4469 return true;
4470 }
4471
vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)4472 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4473 {
4474 u16 mcs_mask = 0;
4475
4476 switch (vht_mcs_map) {
4477 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4478 break;
4479 case IEEE80211_VHT_MCS_SUPPORT_0_7:
4480 mcs_mask = 0x00FF;
4481 break;
4482 case IEEE80211_VHT_MCS_SUPPORT_0_8:
4483 mcs_mask = 0x01FF;
4484 break;
4485 case IEEE80211_VHT_MCS_SUPPORT_0_9:
4486 mcs_mask = 0x03FF;
4487 break;
4488 default:
4489 break;
4490 }
4491
4492 return mcs_mask;
4493 }
4494
vht_build_mcs_mask(u16 vht_mcs_map,u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])4495 static void vht_build_mcs_mask(u16 vht_mcs_map,
4496 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4497 {
4498 u8 nss;
4499
4500 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4501 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4502 vht_mcs_map >>= 2;
4503 }
4504 }
4505
vht_set_mcs_mask(struct ieee80211_supported_band * sband,struct nl80211_txrate_vht * txrate,u16 mcs[NL80211_VHT_NSS_MAX])4506 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4507 struct nl80211_txrate_vht *txrate,
4508 u16 mcs[NL80211_VHT_NSS_MAX])
4509 {
4510 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4511 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4512 u8 i;
4513
4514 if (!sband->vht_cap.vht_supported)
4515 return false;
4516
4517 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4518
4519 /* Build vht_mcs_mask from VHT capabilities */
4520 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4521
4522 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4523 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4524 mcs[i] = txrate->mcs[i];
4525 else
4526 return false;
4527 }
4528
4529 return true;
4530 }
4531
he_mcs_map_to_mcs_mask(u8 he_mcs_map)4532 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4533 {
4534 switch (he_mcs_map) {
4535 case IEEE80211_HE_MCS_NOT_SUPPORTED:
4536 return 0;
4537 case IEEE80211_HE_MCS_SUPPORT_0_7:
4538 return 0x00FF;
4539 case IEEE80211_HE_MCS_SUPPORT_0_9:
4540 return 0x03FF;
4541 case IEEE80211_HE_MCS_SUPPORT_0_11:
4542 return 0xFFF;
4543 default:
4544 break;
4545 }
4546 return 0;
4547 }
4548
he_build_mcs_mask(u16 he_mcs_map,u16 he_mcs_mask[NL80211_HE_NSS_MAX])4549 static void he_build_mcs_mask(u16 he_mcs_map,
4550 u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4551 {
4552 u8 nss;
4553
4554 for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4555 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4556 he_mcs_map >>= 2;
4557 }
4558 }
4559
he_get_txmcsmap(struct genl_info * info,const struct ieee80211_sta_he_cap * he_cap)4560 static u16 he_get_txmcsmap(struct genl_info *info,
4561 const struct ieee80211_sta_he_cap *he_cap)
4562 {
4563 struct net_device *dev = info->user_ptr[1];
4564 struct wireless_dev *wdev = dev->ieee80211_ptr;
4565 __le16 tx_mcs;
4566
4567 switch (wdev->chandef.width) {
4568 case NL80211_CHAN_WIDTH_80P80:
4569 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4570 break;
4571 case NL80211_CHAN_WIDTH_160:
4572 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4573 break;
4574 default:
4575 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4576 break;
4577 }
4578 return le16_to_cpu(tx_mcs);
4579 }
4580
he_set_mcs_mask(struct genl_info * info,struct wireless_dev * wdev,struct ieee80211_supported_band * sband,struct nl80211_txrate_he * txrate,u16 mcs[NL80211_HE_NSS_MAX])4581 static bool he_set_mcs_mask(struct genl_info *info,
4582 struct wireless_dev *wdev,
4583 struct ieee80211_supported_band *sband,
4584 struct nl80211_txrate_he *txrate,
4585 u16 mcs[NL80211_HE_NSS_MAX])
4586 {
4587 const struct ieee80211_sta_he_cap *he_cap;
4588 u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4589 u16 tx_mcs_map = 0;
4590 u8 i;
4591
4592 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4593 if (!he_cap)
4594 return false;
4595
4596 memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4597
4598 tx_mcs_map = he_get_txmcsmap(info, he_cap);
4599
4600 /* Build he_mcs_mask from HE capabilities */
4601 he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4602
4603 for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4604 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4605 mcs[i] = txrate->mcs[i];
4606 else
4607 return false;
4608 }
4609
4610 return true;
4611 }
4612
nl80211_parse_tx_bitrate_mask(struct genl_info * info,struct nlattr * attrs[],enum nl80211_attrs attr,struct cfg80211_bitrate_mask * mask,struct net_device * dev)4613 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4614 struct nlattr *attrs[],
4615 enum nl80211_attrs attr,
4616 struct cfg80211_bitrate_mask *mask,
4617 struct net_device *dev)
4618 {
4619 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4620 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4621 struct wireless_dev *wdev = dev->ieee80211_ptr;
4622 int rem, i;
4623 struct nlattr *tx_rates;
4624 struct ieee80211_supported_band *sband;
4625 u16 vht_tx_mcs_map, he_tx_mcs_map;
4626
4627 memset(mask, 0, sizeof(*mask));
4628 /* Default to all rates enabled */
4629 for (i = 0; i < NUM_NL80211_BANDS; i++) {
4630 const struct ieee80211_sta_he_cap *he_cap;
4631
4632 sband = rdev->wiphy.bands[i];
4633
4634 if (!sband)
4635 continue;
4636
4637 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4638 memcpy(mask->control[i].ht_mcs,
4639 sband->ht_cap.mcs.rx_mask,
4640 sizeof(mask->control[i].ht_mcs));
4641
4642 if (sband->vht_cap.vht_supported) {
4643 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4644 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4645 }
4646
4647 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4648 if (!he_cap)
4649 continue;
4650
4651 he_tx_mcs_map = he_get_txmcsmap(info, he_cap);
4652 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
4653
4654 mask->control[i].he_gi = 0xFF;
4655 mask->control[i].he_ltf = 0xFF;
4656 }
4657
4658 /* if no rates are given set it back to the defaults */
4659 if (!attrs[attr])
4660 goto out;
4661
4662 /* The nested attribute uses enum nl80211_band as the index. This maps
4663 * directly to the enum nl80211_band values used in cfg80211.
4664 */
4665 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4666 nla_for_each_nested(tx_rates, attrs[attr], rem) {
4667 enum nl80211_band band = nla_type(tx_rates);
4668 int err;
4669
4670 if (band < 0 || band >= NUM_NL80211_BANDS)
4671 return -EINVAL;
4672 sband = rdev->wiphy.bands[band];
4673 if (sband == NULL)
4674 return -EINVAL;
4675 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4676 tx_rates,
4677 nl80211_txattr_policy,
4678 info->extack);
4679 if (err)
4680 return err;
4681 if (tb[NL80211_TXRATE_LEGACY]) {
4682 mask->control[band].legacy = rateset_to_mask(
4683 sband,
4684 nla_data(tb[NL80211_TXRATE_LEGACY]),
4685 nla_len(tb[NL80211_TXRATE_LEGACY]));
4686 if ((mask->control[band].legacy == 0) &&
4687 nla_len(tb[NL80211_TXRATE_LEGACY]))
4688 return -EINVAL;
4689 }
4690 if (tb[NL80211_TXRATE_HT]) {
4691 if (!ht_rateset_to_mask(
4692 sband,
4693 nla_data(tb[NL80211_TXRATE_HT]),
4694 nla_len(tb[NL80211_TXRATE_HT]),
4695 mask->control[band].ht_mcs))
4696 return -EINVAL;
4697 }
4698 if (tb[NL80211_TXRATE_VHT]) {
4699 if (!vht_set_mcs_mask(
4700 sband,
4701 nla_data(tb[NL80211_TXRATE_VHT]),
4702 mask->control[band].vht_mcs))
4703 return -EINVAL;
4704 }
4705 if (tb[NL80211_TXRATE_GI]) {
4706 mask->control[band].gi =
4707 nla_get_u8(tb[NL80211_TXRATE_GI]);
4708 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4709 return -EINVAL;
4710 }
4711 if (tb[NL80211_TXRATE_HE] &&
4712 !he_set_mcs_mask(info, wdev, sband,
4713 nla_data(tb[NL80211_TXRATE_HE]),
4714 mask->control[band].he_mcs))
4715 return -EINVAL;
4716 if (tb[NL80211_TXRATE_HE_GI])
4717 mask->control[band].he_gi =
4718 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
4719 if (tb[NL80211_TXRATE_HE_LTF])
4720 mask->control[band].he_ltf =
4721 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
4722
4723 if (mask->control[band].legacy == 0) {
4724 /* don't allow empty legacy rates if HT, VHT or HE
4725 * are not even supported.
4726 */
4727 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4728 rdev->wiphy.bands[band]->vht_cap.vht_supported ||
4729 ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
4730 return -EINVAL;
4731
4732 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4733 if (mask->control[band].ht_mcs[i])
4734 goto out;
4735
4736 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4737 if (mask->control[band].vht_mcs[i])
4738 goto out;
4739
4740 for (i = 0; i < NL80211_HE_NSS_MAX; i++)
4741 if (mask->control[band].he_mcs[i])
4742 goto out;
4743
4744 /* legacy and mcs rates may not be both empty */
4745 return -EINVAL;
4746 }
4747 }
4748
4749 out:
4750 return 0;
4751 }
4752
validate_beacon_tx_rate(struct cfg80211_registered_device * rdev,enum nl80211_band band,struct cfg80211_bitrate_mask * beacon_rate)4753 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4754 enum nl80211_band band,
4755 struct cfg80211_bitrate_mask *beacon_rate)
4756 {
4757 u32 count_ht, count_vht, i;
4758 u32 rate = beacon_rate->control[band].legacy;
4759
4760 /* Allow only one rate */
4761 if (hweight32(rate) > 1)
4762 return -EINVAL;
4763
4764 count_ht = 0;
4765 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4766 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4767 return -EINVAL;
4768 } else if (beacon_rate->control[band].ht_mcs[i]) {
4769 count_ht++;
4770 if (count_ht > 1)
4771 return -EINVAL;
4772 }
4773 if (count_ht && rate)
4774 return -EINVAL;
4775 }
4776
4777 count_vht = 0;
4778 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4779 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4780 return -EINVAL;
4781 } else if (beacon_rate->control[band].vht_mcs[i]) {
4782 count_vht++;
4783 if (count_vht > 1)
4784 return -EINVAL;
4785 }
4786 if (count_vht && rate)
4787 return -EINVAL;
4788 }
4789
4790 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4791 return -EINVAL;
4792
4793 if (rate &&
4794 !wiphy_ext_feature_isset(&rdev->wiphy,
4795 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4796 return -EINVAL;
4797 if (count_ht &&
4798 !wiphy_ext_feature_isset(&rdev->wiphy,
4799 NL80211_EXT_FEATURE_BEACON_RATE_HT))
4800 return -EINVAL;
4801 if (count_vht &&
4802 !wiphy_ext_feature_isset(&rdev->wiphy,
4803 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4804 return -EINVAL;
4805
4806 return 0;
4807 }
4808
nl80211_parse_beacon(struct cfg80211_registered_device * rdev,struct nlattr * attrs[],struct cfg80211_beacon_data * bcn)4809 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4810 struct nlattr *attrs[],
4811 struct cfg80211_beacon_data *bcn)
4812 {
4813 bool haveinfo = false;
4814 int err;
4815
4816 memset(bcn, 0, sizeof(*bcn));
4817
4818 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4819 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4820 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4821 if (!bcn->head_len)
4822 return -EINVAL;
4823 haveinfo = true;
4824 }
4825
4826 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4827 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4828 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4829 haveinfo = true;
4830 }
4831
4832 if (!haveinfo)
4833 return -EINVAL;
4834
4835 if (attrs[NL80211_ATTR_IE]) {
4836 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4837 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4838 }
4839
4840 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4841 bcn->proberesp_ies =
4842 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4843 bcn->proberesp_ies_len =
4844 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4845 }
4846
4847 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4848 bcn->assocresp_ies =
4849 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4850 bcn->assocresp_ies_len =
4851 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4852 }
4853
4854 if (attrs[NL80211_ATTR_PROBE_RESP]) {
4855 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4856 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4857 }
4858
4859 if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4860 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4861
4862 err = nla_parse_nested_deprecated(tb,
4863 NL80211_FTM_RESP_ATTR_MAX,
4864 attrs[NL80211_ATTR_FTM_RESPONDER],
4865 NULL, NULL);
4866 if (err)
4867 return err;
4868
4869 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4870 wiphy_ext_feature_isset(&rdev->wiphy,
4871 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4872 bcn->ftm_responder = 1;
4873 else
4874 return -EOPNOTSUPP;
4875
4876 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4877 bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4878 bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4879 }
4880
4881 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4882 bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4883 bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4884 }
4885 } else {
4886 bcn->ftm_responder = -1;
4887 }
4888
4889 return 0;
4890 }
4891
nl80211_parse_he_obss_pd(struct nlattr * attrs,struct ieee80211_he_obss_pd * he_obss_pd)4892 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4893 struct ieee80211_he_obss_pd *he_obss_pd)
4894 {
4895 struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4896 int err;
4897
4898 err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4899 he_obss_pd_policy, NULL);
4900 if (err)
4901 return err;
4902
4903 if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
4904 return -EINVAL;
4905
4906 he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
4907
4908 if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
4909 he_obss_pd->min_offset =
4910 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4911 if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4912 he_obss_pd->max_offset =
4913 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4914 if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
4915 he_obss_pd->non_srg_max_offset =
4916 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
4917
4918 if (he_obss_pd->min_offset > he_obss_pd->max_offset)
4919 return -EINVAL;
4920
4921 if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
4922 memcpy(he_obss_pd->bss_color_bitmap,
4923 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
4924 sizeof(he_obss_pd->bss_color_bitmap));
4925
4926 if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
4927 memcpy(he_obss_pd->partial_bssid_bitmap,
4928 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
4929 sizeof(he_obss_pd->partial_bssid_bitmap));
4930
4931 he_obss_pd->enable = true;
4932
4933 return 0;
4934 }
4935
nl80211_parse_he_bss_color(struct nlattr * attrs,struct cfg80211_he_bss_color * he_bss_color)4936 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4937 struct cfg80211_he_bss_color *he_bss_color)
4938 {
4939 struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4940 int err;
4941
4942 err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4943 he_bss_color_policy, NULL);
4944 if (err)
4945 return err;
4946
4947 if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4948 return -EINVAL;
4949
4950 he_bss_color->color =
4951 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4952 he_bss_color->enabled =
4953 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4954 he_bss_color->partial =
4955 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4956
4957 return 0;
4958 }
4959
nl80211_parse_fils_discovery(struct cfg80211_registered_device * rdev,struct nlattr * attrs,struct cfg80211_ap_settings * params)4960 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
4961 struct nlattr *attrs,
4962 struct cfg80211_ap_settings *params)
4963 {
4964 struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
4965 int ret;
4966 struct cfg80211_fils_discovery *fd = ¶ms->fils_discovery;
4967
4968 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4969 NL80211_EXT_FEATURE_FILS_DISCOVERY))
4970 return -EINVAL;
4971
4972 ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
4973 NULL, NULL);
4974 if (ret)
4975 return ret;
4976
4977 if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
4978 !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
4979 !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
4980 return -EINVAL;
4981
4982 fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
4983 fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
4984 fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
4985 fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
4986
4987 return 0;
4988 }
4989
4990 static int
nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device * rdev,struct nlattr * attrs,struct cfg80211_ap_settings * params)4991 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
4992 struct nlattr *attrs,
4993 struct cfg80211_ap_settings *params)
4994 {
4995 struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
4996 int ret;
4997 struct cfg80211_unsol_bcast_probe_resp *presp =
4998 ¶ms->unsol_bcast_probe_resp;
4999
5000 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5001 NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5002 return -EINVAL;
5003
5004 ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5005 attrs, NULL, NULL);
5006 if (ret)
5007 return ret;
5008
5009 if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5010 !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5011 return -EINVAL;
5012
5013 presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5014 presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5015 presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5016 return 0;
5017 }
5018
nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings * params,const u8 * rates)5019 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5020 const u8 *rates)
5021 {
5022 int i;
5023
5024 if (!rates)
5025 return;
5026
5027 for (i = 0; i < rates[1]; i++) {
5028 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5029 params->ht_required = true;
5030 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5031 params->vht_required = true;
5032 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5033 params->he_required = true;
5034 }
5035 }
5036
5037 /*
5038 * Since the nl80211 API didn't include, from the beginning, attributes about
5039 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5040 * benefit of drivers that rebuild IEs in the firmware.
5041 */
nl80211_calculate_ap_params(struct cfg80211_ap_settings * params)5042 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5043 {
5044 const struct cfg80211_beacon_data *bcn = ¶ms->beacon;
5045 size_t ies_len = bcn->tail_len;
5046 const u8 *ies = bcn->tail;
5047 const u8 *rates;
5048 const u8 *cap;
5049
5050 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
5051 nl80211_check_ap_rate_selectors(params, rates);
5052
5053 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5054 nl80211_check_ap_rate_selectors(params, rates);
5055
5056 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5057 if (cap && cap[1] >= sizeof(*params->ht_cap))
5058 params->ht_cap = (void *)(cap + 2);
5059 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5060 if (cap && cap[1] >= sizeof(*params->vht_cap))
5061 params->vht_cap = (void *)(cap + 2);
5062 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5063 if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
5064 params->he_cap = (void *)(cap + 3);
5065 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5066 if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
5067 params->he_oper = (void *)(cap + 3);
5068 }
5069
nl80211_get_ap_channel(struct cfg80211_registered_device * rdev,struct cfg80211_ap_settings * params)5070 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5071 struct cfg80211_ap_settings *params)
5072 {
5073 struct wireless_dev *wdev;
5074 bool ret = false;
5075
5076 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5077 if (wdev->iftype != NL80211_IFTYPE_AP &&
5078 wdev->iftype != NL80211_IFTYPE_P2P_GO)
5079 continue;
5080
5081 if (!wdev->preset_chandef.chan)
5082 continue;
5083
5084 params->chandef = wdev->preset_chandef;
5085 ret = true;
5086 break;
5087 }
5088
5089 return ret;
5090 }
5091
nl80211_valid_auth_type(struct cfg80211_registered_device * rdev,enum nl80211_auth_type auth_type,enum nl80211_commands cmd)5092 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5093 enum nl80211_auth_type auth_type,
5094 enum nl80211_commands cmd)
5095 {
5096 if (auth_type > NL80211_AUTHTYPE_MAX)
5097 return false;
5098
5099 switch (cmd) {
5100 case NL80211_CMD_AUTHENTICATE:
5101 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5102 auth_type == NL80211_AUTHTYPE_SAE)
5103 return false;
5104 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5105 NL80211_EXT_FEATURE_FILS_STA) &&
5106 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5107 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5108 auth_type == NL80211_AUTHTYPE_FILS_PK))
5109 return false;
5110 return true;
5111 case NL80211_CMD_CONNECT:
5112 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5113 !wiphy_ext_feature_isset(&rdev->wiphy,
5114 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5115 auth_type == NL80211_AUTHTYPE_SAE)
5116 return false;
5117
5118 /* FILS with SK PFS or PK not supported yet */
5119 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5120 auth_type == NL80211_AUTHTYPE_FILS_PK)
5121 return false;
5122 if (!wiphy_ext_feature_isset(
5123 &rdev->wiphy,
5124 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5125 auth_type == NL80211_AUTHTYPE_FILS_SK)
5126 return false;
5127 return true;
5128 case NL80211_CMD_START_AP:
5129 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5130 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5131 auth_type == NL80211_AUTHTYPE_SAE)
5132 return false;
5133 /* FILS not supported yet */
5134 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5135 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5136 auth_type == NL80211_AUTHTYPE_FILS_PK)
5137 return false;
5138 return true;
5139 default:
5140 return false;
5141 }
5142 }
5143
nl80211_start_ap(struct sk_buff * skb,struct genl_info * info)5144 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5145 {
5146 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5147 struct net_device *dev = info->user_ptr[1];
5148 struct wireless_dev *wdev = dev->ieee80211_ptr;
5149 struct cfg80211_ap_settings params;
5150 int err;
5151
5152 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5153 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5154 return -EOPNOTSUPP;
5155
5156 if (!rdev->ops->start_ap)
5157 return -EOPNOTSUPP;
5158
5159 if (wdev->beacon_interval)
5160 return -EALREADY;
5161
5162 memset(¶ms, 0, sizeof(params));
5163
5164 /* these are required for START_AP */
5165 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5166 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5167 !info->attrs[NL80211_ATTR_BEACON_HEAD])
5168 return -EINVAL;
5169
5170 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon);
5171 if (err)
5172 return err;
5173
5174 params.beacon_interval =
5175 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5176 params.dtim_period =
5177 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5178
5179 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5180 params.beacon_interval);
5181 if (err)
5182 return err;
5183
5184 /*
5185 * In theory, some of these attributes should be required here
5186 * but since they were not used when the command was originally
5187 * added, keep them optional for old user space programs to let
5188 * them continue to work with drivers that do not need the
5189 * additional information -- drivers must check!
5190 */
5191 if (info->attrs[NL80211_ATTR_SSID]) {
5192 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5193 params.ssid_len =
5194 nla_len(info->attrs[NL80211_ATTR_SSID]);
5195 if (params.ssid_len == 0)
5196 return -EINVAL;
5197 }
5198
5199 if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5200 params.hidden_ssid = nla_get_u32(
5201 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5202
5203 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5204
5205 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5206 params.auth_type = nla_get_u32(
5207 info->attrs[NL80211_ATTR_AUTH_TYPE]);
5208 if (!nl80211_valid_auth_type(rdev, params.auth_type,
5209 NL80211_CMD_START_AP))
5210 return -EINVAL;
5211 } else
5212 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5213
5214 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto,
5215 NL80211_MAX_NR_CIPHER_SUITES);
5216 if (err)
5217 return err;
5218
5219 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5220 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
5221 return -EOPNOTSUPP;
5222 params.inactivity_timeout = nla_get_u16(
5223 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5224 }
5225
5226 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5227 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5228 return -EINVAL;
5229 params.p2p_ctwindow =
5230 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5231 if (params.p2p_ctwindow != 0 &&
5232 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5233 return -EINVAL;
5234 }
5235
5236 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5237 u8 tmp;
5238
5239 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5240 return -EINVAL;
5241 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5242 params.p2p_opp_ps = tmp;
5243 if (params.p2p_opp_ps != 0 &&
5244 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5245 return -EINVAL;
5246 }
5247
5248 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5249 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef);
5250 if (err)
5251 return err;
5252 } else if (wdev->preset_chandef.chan) {
5253 params.chandef = wdev->preset_chandef;
5254 } else if (!nl80211_get_ap_channel(rdev, ¶ms))
5255 return -EINVAL;
5256
5257 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef,
5258 wdev->iftype))
5259 return -EINVAL;
5260
5261 if (info->attrs[NL80211_ATTR_TX_RATES]) {
5262 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5263 NL80211_ATTR_TX_RATES,
5264 ¶ms.beacon_rate,
5265 dev);
5266 if (err)
5267 return err;
5268
5269 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
5270 ¶ms.beacon_rate);
5271 if (err)
5272 return err;
5273 }
5274
5275 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5276 params.smps_mode =
5277 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5278 switch (params.smps_mode) {
5279 case NL80211_SMPS_OFF:
5280 break;
5281 case NL80211_SMPS_STATIC:
5282 if (!(rdev->wiphy.features &
5283 NL80211_FEATURE_STATIC_SMPS))
5284 return -EINVAL;
5285 break;
5286 case NL80211_SMPS_DYNAMIC:
5287 if (!(rdev->wiphy.features &
5288 NL80211_FEATURE_DYNAMIC_SMPS))
5289 return -EINVAL;
5290 break;
5291 default:
5292 return -EINVAL;
5293 }
5294 } else {
5295 params.smps_mode = NL80211_SMPS_OFF;
5296 }
5297
5298 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5299 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5300 return -EOPNOTSUPP;
5301
5302 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5303 params.acl = parse_acl_data(&rdev->wiphy, info);
5304 if (IS_ERR(params.acl))
5305 return PTR_ERR(params.acl);
5306 }
5307
5308 params.twt_responder =
5309 nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5310
5311 if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5312 err = nl80211_parse_he_obss_pd(
5313 info->attrs[NL80211_ATTR_HE_OBSS_PD],
5314 ¶ms.he_obss_pd);
5315 if (err)
5316 goto out;
5317 }
5318
5319 if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5320 err = nl80211_parse_he_bss_color(
5321 info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5322 ¶ms.he_bss_color);
5323 if (err)
5324 goto out;
5325 }
5326
5327 if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5328 err = nl80211_parse_fils_discovery(rdev,
5329 info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5330 ¶ms);
5331 if (err)
5332 goto out;
5333 }
5334
5335 if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5336 err = nl80211_parse_unsol_bcast_probe_resp(
5337 rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5338 ¶ms);
5339 if (err)
5340 goto out;
5341 }
5342
5343 nl80211_calculate_ap_params(¶ms);
5344
5345 if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5346 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5347
5348 wdev_lock(wdev);
5349 err = rdev_start_ap(rdev, dev, ¶ms);
5350 if (!err) {
5351 wdev->preset_chandef = params.chandef;
5352 wdev->beacon_interval = params.beacon_interval;
5353 wdev->chandef = params.chandef;
5354 wdev->ssid_len = params.ssid_len;
5355 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5356
5357 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5358 wdev->conn_owner_nlportid = info->snd_portid;
5359 }
5360 wdev_unlock(wdev);
5361
5362 out:
5363 kfree(params.acl);
5364
5365 return err;
5366 }
5367
nl80211_set_beacon(struct sk_buff * skb,struct genl_info * info)5368 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5369 {
5370 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5371 struct net_device *dev = info->user_ptr[1];
5372 struct wireless_dev *wdev = dev->ieee80211_ptr;
5373 struct cfg80211_beacon_data params;
5374 int err;
5375
5376 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5377 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5378 return -EOPNOTSUPP;
5379
5380 if (!rdev->ops->change_beacon)
5381 return -EOPNOTSUPP;
5382
5383 if (!wdev->beacon_interval)
5384 return -EINVAL;
5385
5386 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms);
5387 if (err)
5388 return err;
5389
5390 wdev_lock(wdev);
5391 err = rdev_change_beacon(rdev, dev, ¶ms);
5392 wdev_unlock(wdev);
5393
5394 return err;
5395 }
5396
nl80211_stop_ap(struct sk_buff * skb,struct genl_info * info)5397 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5398 {
5399 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5400 struct net_device *dev = info->user_ptr[1];
5401
5402 return cfg80211_stop_ap(rdev, dev, false);
5403 }
5404
5405 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5406 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5407 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5408 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5409 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5410 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5411 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5412 };
5413
parse_station_flags(struct genl_info * info,enum nl80211_iftype iftype,struct station_parameters * params)5414 static int parse_station_flags(struct genl_info *info,
5415 enum nl80211_iftype iftype,
5416 struct station_parameters *params)
5417 {
5418 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5419 struct nlattr *nla;
5420 int flag;
5421
5422 /*
5423 * Try parsing the new attribute first so userspace
5424 * can specify both for older kernels.
5425 */
5426 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5427 if (nla) {
5428 struct nl80211_sta_flag_update *sta_flags;
5429
5430 sta_flags = nla_data(nla);
5431 params->sta_flags_mask = sta_flags->mask;
5432 params->sta_flags_set = sta_flags->set;
5433 params->sta_flags_set &= params->sta_flags_mask;
5434 if ((params->sta_flags_mask |
5435 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5436 return -EINVAL;
5437 return 0;
5438 }
5439
5440 /* if present, parse the old attribute */
5441
5442 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5443 if (!nla)
5444 return 0;
5445
5446 if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5447 return -EINVAL;
5448
5449 /*
5450 * Only allow certain flags for interface types so that
5451 * other attributes are silently ignored. Remember that
5452 * this is backward compatibility code with old userspace
5453 * and shouldn't be hit in other cases anyway.
5454 */
5455 switch (iftype) {
5456 case NL80211_IFTYPE_AP:
5457 case NL80211_IFTYPE_AP_VLAN:
5458 case NL80211_IFTYPE_P2P_GO:
5459 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5460 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5461 BIT(NL80211_STA_FLAG_WME) |
5462 BIT(NL80211_STA_FLAG_MFP);
5463 break;
5464 case NL80211_IFTYPE_P2P_CLIENT:
5465 case NL80211_IFTYPE_STATION:
5466 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5467 BIT(NL80211_STA_FLAG_TDLS_PEER);
5468 break;
5469 case NL80211_IFTYPE_MESH_POINT:
5470 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5471 BIT(NL80211_STA_FLAG_MFP) |
5472 BIT(NL80211_STA_FLAG_AUTHORIZED);
5473 break;
5474 default:
5475 return -EINVAL;
5476 }
5477
5478 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5479 if (flags[flag]) {
5480 params->sta_flags_set |= (1<<flag);
5481
5482 /* no longer support new API additions in old API */
5483 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5484 return -EINVAL;
5485 }
5486 }
5487
5488 return 0;
5489 }
5490
nl80211_put_sta_rate(struct sk_buff * msg,struct rate_info * info,int attr)5491 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5492 {
5493 struct nlattr *rate;
5494 u32 bitrate;
5495 u16 bitrate_compat;
5496 enum nl80211_rate_info rate_flg;
5497
5498 rate = nla_nest_start_noflag(msg, attr);
5499 if (!rate)
5500 return false;
5501
5502 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5503 bitrate = cfg80211_calculate_bitrate(info);
5504 /* report 16-bit bitrate only if we can */
5505 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5506 if (bitrate > 0 &&
5507 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5508 return false;
5509 if (bitrate_compat > 0 &&
5510 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5511 return false;
5512
5513 switch (info->bw) {
5514 case RATE_INFO_BW_5:
5515 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5516 break;
5517 case RATE_INFO_BW_10:
5518 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5519 break;
5520 default:
5521 WARN_ON(1);
5522 fallthrough;
5523 case RATE_INFO_BW_20:
5524 rate_flg = 0;
5525 break;
5526 case RATE_INFO_BW_40:
5527 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5528 break;
5529 case RATE_INFO_BW_80:
5530 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5531 break;
5532 case RATE_INFO_BW_160:
5533 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5534 break;
5535 case RATE_INFO_BW_HE_RU:
5536 rate_flg = 0;
5537 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5538 }
5539
5540 if (rate_flg && nla_put_flag(msg, rate_flg))
5541 return false;
5542
5543 if (info->flags & RATE_INFO_FLAGS_MCS) {
5544 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5545 return false;
5546 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5547 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5548 return false;
5549 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5550 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5551 return false;
5552 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5553 return false;
5554 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5555 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5556 return false;
5557 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5558 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5559 return false;
5560 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5561 return false;
5562 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5563 return false;
5564 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5565 return false;
5566 if (info->bw == RATE_INFO_BW_HE_RU &&
5567 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5568 info->he_ru_alloc))
5569 return false;
5570 }
5571
5572 nla_nest_end(msg, rate);
5573 return true;
5574 }
5575
nl80211_put_signal(struct sk_buff * msg,u8 mask,s8 * signal,int id)5576 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5577 int id)
5578 {
5579 void *attr;
5580 int i = 0;
5581
5582 if (!mask)
5583 return true;
5584
5585 attr = nla_nest_start_noflag(msg, id);
5586 if (!attr)
5587 return false;
5588
5589 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5590 if (!(mask & BIT(i)))
5591 continue;
5592
5593 if (nla_put_u8(msg, i, signal[i]))
5594 return false;
5595 }
5596
5597 nla_nest_end(msg, attr);
5598
5599 return true;
5600 }
5601
nl80211_send_station(struct sk_buff * msg,u32 cmd,u32 portid,u32 seq,int flags,struct cfg80211_registered_device * rdev,struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo)5602 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5603 u32 seq, int flags,
5604 struct cfg80211_registered_device *rdev,
5605 struct net_device *dev,
5606 const u8 *mac_addr, struct station_info *sinfo)
5607 {
5608 void *hdr;
5609 struct nlattr *sinfoattr, *bss_param;
5610
5611 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5612 if (!hdr) {
5613 cfg80211_sinfo_release_content(sinfo);
5614 return -1;
5615 }
5616
5617 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5618 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5619 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5620 goto nla_put_failure;
5621
5622 sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5623 if (!sinfoattr)
5624 goto nla_put_failure;
5625
5626 #define PUT_SINFO(attr, memb, type) do { \
5627 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
5628 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
5629 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
5630 sinfo->memb)) \
5631 goto nla_put_failure; \
5632 } while (0)
5633 #define PUT_SINFO_U64(attr, memb) do { \
5634 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
5635 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
5636 sinfo->memb, NL80211_STA_INFO_PAD)) \
5637 goto nla_put_failure; \
5638 } while (0)
5639
5640 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5641 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5642 PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5643
5644 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5645 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5646 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5647 (u32)sinfo->rx_bytes))
5648 goto nla_put_failure;
5649
5650 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5651 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5652 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5653 (u32)sinfo->tx_bytes))
5654 goto nla_put_failure;
5655
5656 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5657 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5658 PUT_SINFO(LLID, llid, u16);
5659 PUT_SINFO(PLID, plid, u16);
5660 PUT_SINFO(PLINK_STATE, plink_state, u8);
5661 PUT_SINFO_U64(RX_DURATION, rx_duration);
5662 PUT_SINFO_U64(TX_DURATION, tx_duration);
5663
5664 if (wiphy_ext_feature_isset(&rdev->wiphy,
5665 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5666 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5667
5668 switch (rdev->wiphy.signal_type) {
5669 case CFG80211_SIGNAL_TYPE_MBM:
5670 PUT_SINFO(SIGNAL, signal, u8);
5671 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5672 break;
5673 default:
5674 break;
5675 }
5676 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5677 if (!nl80211_put_signal(msg, sinfo->chains,
5678 sinfo->chain_signal,
5679 NL80211_STA_INFO_CHAIN_SIGNAL))
5680 goto nla_put_failure;
5681 }
5682 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5683 if (!nl80211_put_signal(msg, sinfo->chains,
5684 sinfo->chain_signal_avg,
5685 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5686 goto nla_put_failure;
5687 }
5688 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5689 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5690 NL80211_STA_INFO_TX_BITRATE))
5691 goto nla_put_failure;
5692 }
5693 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5694 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5695 NL80211_STA_INFO_RX_BITRATE))
5696 goto nla_put_failure;
5697 }
5698
5699 PUT_SINFO(RX_PACKETS, rx_packets, u32);
5700 PUT_SINFO(TX_PACKETS, tx_packets, u32);
5701 PUT_SINFO(TX_RETRIES, tx_retries, u32);
5702 PUT_SINFO(TX_FAILED, tx_failed, u32);
5703 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5704 PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5705 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5706 PUT_SINFO(LOCAL_PM, local_pm, u32);
5707 PUT_SINFO(PEER_PM, peer_pm, u32);
5708 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5709 PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5710 PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5711
5712 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5713 bss_param = nla_nest_start_noflag(msg,
5714 NL80211_STA_INFO_BSS_PARAM);
5715 if (!bss_param)
5716 goto nla_put_failure;
5717
5718 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5719 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5720 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5721 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5722 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5723 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5724 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5725 sinfo->bss_param.dtim_period) ||
5726 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5727 sinfo->bss_param.beacon_interval))
5728 goto nla_put_failure;
5729
5730 nla_nest_end(msg, bss_param);
5731 }
5732 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5733 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5734 sizeof(struct nl80211_sta_flag_update),
5735 &sinfo->sta_flags))
5736 goto nla_put_failure;
5737
5738 PUT_SINFO_U64(T_OFFSET, t_offset);
5739 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5740 PUT_SINFO_U64(BEACON_RX, rx_beacon);
5741 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5742 PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5743 PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5744 if (wiphy_ext_feature_isset(&rdev->wiphy,
5745 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5746 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5747 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5748 }
5749
5750 #undef PUT_SINFO
5751 #undef PUT_SINFO_U64
5752
5753 if (sinfo->pertid) {
5754 struct nlattr *tidsattr;
5755 int tid;
5756
5757 tidsattr = nla_nest_start_noflag(msg,
5758 NL80211_STA_INFO_TID_STATS);
5759 if (!tidsattr)
5760 goto nla_put_failure;
5761
5762 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5763 struct cfg80211_tid_stats *tidstats;
5764 struct nlattr *tidattr;
5765
5766 tidstats = &sinfo->pertid[tid];
5767
5768 if (!tidstats->filled)
5769 continue;
5770
5771 tidattr = nla_nest_start_noflag(msg, tid + 1);
5772 if (!tidattr)
5773 goto nla_put_failure;
5774
5775 #define PUT_TIDVAL_U64(attr, memb) do { \
5776 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
5777 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
5778 tidstats->memb, NL80211_TID_STATS_PAD)) \
5779 goto nla_put_failure; \
5780 } while (0)
5781
5782 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5783 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5784 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5785 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5786
5787 #undef PUT_TIDVAL_U64
5788 if ((tidstats->filled &
5789 BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5790 !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5791 NL80211_TID_STATS_TXQ_STATS))
5792 goto nla_put_failure;
5793
5794 nla_nest_end(msg, tidattr);
5795 }
5796
5797 nla_nest_end(msg, tidsattr);
5798 }
5799
5800 nla_nest_end(msg, sinfoattr);
5801
5802 if (sinfo->assoc_req_ies_len &&
5803 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5804 sinfo->assoc_req_ies))
5805 goto nla_put_failure;
5806
5807 cfg80211_sinfo_release_content(sinfo);
5808 genlmsg_end(msg, hdr);
5809 return 0;
5810
5811 nla_put_failure:
5812 cfg80211_sinfo_release_content(sinfo);
5813 genlmsg_cancel(msg, hdr);
5814 return -EMSGSIZE;
5815 }
5816
nl80211_dump_station(struct sk_buff * skb,struct netlink_callback * cb)5817 static int nl80211_dump_station(struct sk_buff *skb,
5818 struct netlink_callback *cb)
5819 {
5820 struct station_info sinfo;
5821 struct cfg80211_registered_device *rdev;
5822 struct wireless_dev *wdev;
5823 u8 mac_addr[ETH_ALEN];
5824 int sta_idx = cb->args[2];
5825 int err;
5826
5827 rtnl_lock();
5828 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5829 if (err)
5830 goto out_err;
5831
5832 if (!wdev->netdev) {
5833 err = -EINVAL;
5834 goto out_err;
5835 }
5836
5837 if (!rdev->ops->dump_station) {
5838 err = -EOPNOTSUPP;
5839 goto out_err;
5840 }
5841
5842 while (1) {
5843 memset(&sinfo, 0, sizeof(sinfo));
5844 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5845 mac_addr, &sinfo);
5846 if (err == -ENOENT)
5847 break;
5848 if (err)
5849 goto out_err;
5850
5851 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5852 NETLINK_CB(cb->skb).portid,
5853 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5854 rdev, wdev->netdev, mac_addr,
5855 &sinfo) < 0)
5856 goto out;
5857
5858 sta_idx++;
5859 }
5860
5861 out:
5862 cb->args[2] = sta_idx;
5863 err = skb->len;
5864 out_err:
5865 rtnl_unlock();
5866
5867 return err;
5868 }
5869
nl80211_get_station(struct sk_buff * skb,struct genl_info * info)5870 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5871 {
5872 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5873 struct net_device *dev = info->user_ptr[1];
5874 struct station_info sinfo;
5875 struct sk_buff *msg;
5876 u8 *mac_addr = NULL;
5877 int err;
5878
5879 memset(&sinfo, 0, sizeof(sinfo));
5880
5881 if (!info->attrs[NL80211_ATTR_MAC])
5882 return -EINVAL;
5883
5884 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5885
5886 if (!rdev->ops->get_station)
5887 return -EOPNOTSUPP;
5888
5889 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5890 if (err)
5891 return err;
5892
5893 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5894 if (!msg) {
5895 cfg80211_sinfo_release_content(&sinfo);
5896 return -ENOMEM;
5897 }
5898
5899 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5900 info->snd_portid, info->snd_seq, 0,
5901 rdev, dev, mac_addr, &sinfo) < 0) {
5902 nlmsg_free(msg);
5903 return -ENOBUFS;
5904 }
5905
5906 return genlmsg_reply(msg, info);
5907 }
5908
cfg80211_check_station_change(struct wiphy * wiphy,struct station_parameters * params,enum cfg80211_station_type statype)5909 int cfg80211_check_station_change(struct wiphy *wiphy,
5910 struct station_parameters *params,
5911 enum cfg80211_station_type statype)
5912 {
5913 if (params->listen_interval != -1 &&
5914 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5915 return -EINVAL;
5916
5917 if (params->support_p2p_ps != -1 &&
5918 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5919 return -EINVAL;
5920
5921 if (params->aid &&
5922 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5923 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5924 return -EINVAL;
5925
5926 /* When you run into this, adjust the code below for the new flag */
5927 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5928
5929 switch (statype) {
5930 case CFG80211_STA_MESH_PEER_KERNEL:
5931 case CFG80211_STA_MESH_PEER_USER:
5932 /*
5933 * No ignoring the TDLS flag here -- the userspace mesh
5934 * code doesn't have the bug of including TDLS in the
5935 * mask everywhere.
5936 */
5937 if (params->sta_flags_mask &
5938 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5939 BIT(NL80211_STA_FLAG_MFP) |
5940 BIT(NL80211_STA_FLAG_AUTHORIZED)))
5941 return -EINVAL;
5942 break;
5943 case CFG80211_STA_TDLS_PEER_SETUP:
5944 case CFG80211_STA_TDLS_PEER_ACTIVE:
5945 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5946 return -EINVAL;
5947 /* ignore since it can't change */
5948 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5949 break;
5950 default:
5951 /* disallow mesh-specific things */
5952 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5953 return -EINVAL;
5954 if (params->local_pm)
5955 return -EINVAL;
5956 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5957 return -EINVAL;
5958 }
5959
5960 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5961 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5962 /* TDLS can't be set, ... */
5963 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5964 return -EINVAL;
5965 /*
5966 * ... but don't bother the driver with it. This works around
5967 * a hostapd/wpa_supplicant issue -- it always includes the
5968 * TLDS_PEER flag in the mask even for AP mode.
5969 */
5970 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5971 }
5972
5973 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5974 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5975 /* reject other things that can't change */
5976 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5977 return -EINVAL;
5978 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5979 return -EINVAL;
5980 if (params->supported_rates)
5981 return -EINVAL;
5982 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5983 params->he_capa)
5984 return -EINVAL;
5985 }
5986
5987 if (statype != CFG80211_STA_AP_CLIENT &&
5988 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5989 if (params->vlan)
5990 return -EINVAL;
5991 }
5992
5993 switch (statype) {
5994 case CFG80211_STA_AP_MLME_CLIENT:
5995 /* Use this only for authorizing/unauthorizing a station */
5996 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5997 return -EOPNOTSUPP;
5998 break;
5999 case CFG80211_STA_AP_CLIENT:
6000 case CFG80211_STA_AP_CLIENT_UNASSOC:
6001 /* accept only the listed bits */
6002 if (params->sta_flags_mask &
6003 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6004 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6005 BIT(NL80211_STA_FLAG_ASSOCIATED) |
6006 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6007 BIT(NL80211_STA_FLAG_WME) |
6008 BIT(NL80211_STA_FLAG_MFP)))
6009 return -EINVAL;
6010
6011 /* but authenticated/associated only if driver handles it */
6012 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6013 params->sta_flags_mask &
6014 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6015 BIT(NL80211_STA_FLAG_ASSOCIATED)))
6016 return -EINVAL;
6017 break;
6018 case CFG80211_STA_IBSS:
6019 case CFG80211_STA_AP_STA:
6020 /* reject any changes other than AUTHORIZED */
6021 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6022 return -EINVAL;
6023 break;
6024 case CFG80211_STA_TDLS_PEER_SETUP:
6025 /* reject any changes other than AUTHORIZED or WME */
6026 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6027 BIT(NL80211_STA_FLAG_WME)))
6028 return -EINVAL;
6029 /* force (at least) rates when authorizing */
6030 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6031 !params->supported_rates)
6032 return -EINVAL;
6033 break;
6034 case CFG80211_STA_TDLS_PEER_ACTIVE:
6035 /* reject any changes */
6036 return -EINVAL;
6037 case CFG80211_STA_MESH_PEER_KERNEL:
6038 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6039 return -EINVAL;
6040 break;
6041 case CFG80211_STA_MESH_PEER_USER:
6042 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6043 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6044 return -EINVAL;
6045 break;
6046 }
6047
6048 /*
6049 * Older kernel versions ignored this attribute entirely, so don't
6050 * reject attempts to update it but mark it as unused instead so the
6051 * driver won't look at the data.
6052 */
6053 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6054 statype != CFG80211_STA_TDLS_PEER_SETUP)
6055 params->opmode_notif_used = false;
6056
6057 return 0;
6058 }
6059 EXPORT_SYMBOL(cfg80211_check_station_change);
6060
6061 /*
6062 * Get vlan interface making sure it is running and on the right wiphy.
6063 */
get_vlan(struct genl_info * info,struct cfg80211_registered_device * rdev)6064 static struct net_device *get_vlan(struct genl_info *info,
6065 struct cfg80211_registered_device *rdev)
6066 {
6067 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6068 struct net_device *v;
6069 int ret;
6070
6071 if (!vlanattr)
6072 return NULL;
6073
6074 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6075 if (!v)
6076 return ERR_PTR(-ENODEV);
6077
6078 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6079 ret = -EINVAL;
6080 goto error;
6081 }
6082
6083 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6084 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6085 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6086 ret = -EINVAL;
6087 goto error;
6088 }
6089
6090 if (!netif_running(v)) {
6091 ret = -ENETDOWN;
6092 goto error;
6093 }
6094
6095 return v;
6096 error:
6097 dev_put(v);
6098 return ERR_PTR(ret);
6099 }
6100
6101 static const struct nla_policy
6102 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
6103 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
6104 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
6105 };
6106
nl80211_parse_sta_wme(struct genl_info * info,struct station_parameters * params)6107 static int nl80211_parse_sta_wme(struct genl_info *info,
6108 struct station_parameters *params)
6109 {
6110 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6111 struct nlattr *nla;
6112 int err;
6113
6114 /* parse WME attributes if present */
6115 if (!info->attrs[NL80211_ATTR_STA_WME])
6116 return 0;
6117
6118 nla = info->attrs[NL80211_ATTR_STA_WME];
6119 err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6120 nl80211_sta_wme_policy,
6121 info->extack);
6122 if (err)
6123 return err;
6124
6125 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6126 params->uapsd_queues = nla_get_u8(
6127 tb[NL80211_STA_WME_UAPSD_QUEUES]);
6128 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6129 return -EINVAL;
6130
6131 if (tb[NL80211_STA_WME_MAX_SP])
6132 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6133
6134 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6135 return -EINVAL;
6136
6137 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6138
6139 return 0;
6140 }
6141
nl80211_parse_sta_channel_info(struct genl_info * info,struct station_parameters * params)6142 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6143 struct station_parameters *params)
6144 {
6145 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6146 params->supported_channels =
6147 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6148 params->supported_channels_len =
6149 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6150 /*
6151 * Need to include at least one (first channel, number of
6152 * channels) tuple for each subband (checked in policy),
6153 * and must have proper tuples for the rest of the data as well.
6154 */
6155 if (params->supported_channels_len % 2)
6156 return -EINVAL;
6157 }
6158
6159 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6160 params->supported_oper_classes =
6161 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6162 params->supported_oper_classes_len =
6163 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6164 }
6165 return 0;
6166 }
6167
nl80211_set_station_tdls(struct genl_info * info,struct station_parameters * params)6168 static int nl80211_set_station_tdls(struct genl_info *info,
6169 struct station_parameters *params)
6170 {
6171 int err;
6172 /* Dummy STA entry gets updated once the peer capabilities are known */
6173 if (info->attrs[NL80211_ATTR_PEER_AID])
6174 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6175 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6176 params->ht_capa =
6177 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6178 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6179 params->vht_capa =
6180 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6181 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6182 params->he_capa =
6183 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6184 params->he_capa_len =
6185 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6186 }
6187
6188 err = nl80211_parse_sta_channel_info(info, params);
6189 if (err)
6190 return err;
6191
6192 return nl80211_parse_sta_wme(info, params);
6193 }
6194
nl80211_parse_sta_txpower_setting(struct genl_info * info,struct station_parameters * params)6195 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6196 struct station_parameters *params)
6197 {
6198 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6199 int idx;
6200
6201 if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6202 if (!rdev->ops->set_tx_power ||
6203 !wiphy_ext_feature_isset(&rdev->wiphy,
6204 NL80211_EXT_FEATURE_STA_TX_PWR))
6205 return -EOPNOTSUPP;
6206
6207 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6208 params->txpwr.type = nla_get_u8(info->attrs[idx]);
6209
6210 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
6211 idx = NL80211_ATTR_STA_TX_POWER;
6212
6213 if (info->attrs[idx])
6214 params->txpwr.power =
6215 nla_get_s16(info->attrs[idx]);
6216 else
6217 return -EINVAL;
6218 }
6219 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
6220 }
6221
6222 return 0;
6223 }
6224
nl80211_set_station(struct sk_buff * skb,struct genl_info * info)6225 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6226 {
6227 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6228 struct net_device *dev = info->user_ptr[1];
6229 struct station_parameters params;
6230 u8 *mac_addr;
6231 int err;
6232
6233 memset(¶ms, 0, sizeof(params));
6234
6235 if (!rdev->ops->change_station)
6236 return -EOPNOTSUPP;
6237
6238 /*
6239 * AID and listen_interval properties can be set only for unassociated
6240 * station. Include these parameters here and will check them in
6241 * cfg80211_check_station_change().
6242 */
6243 if (info->attrs[NL80211_ATTR_STA_AID])
6244 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6245
6246 if (info->attrs[NL80211_ATTR_VLAN_ID])
6247 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6248
6249 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6250 params.listen_interval =
6251 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6252 else
6253 params.listen_interval = -1;
6254
6255 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6256 params.support_p2p_ps =
6257 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6258 else
6259 params.support_p2p_ps = -1;
6260
6261 if (!info->attrs[NL80211_ATTR_MAC])
6262 return -EINVAL;
6263
6264 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6265
6266 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6267 params.supported_rates =
6268 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6269 params.supported_rates_len =
6270 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6271 }
6272
6273 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6274 params.capability =
6275 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6276 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6277 }
6278
6279 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6280 params.ext_capab =
6281 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6282 params.ext_capab_len =
6283 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6284 }
6285
6286 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
6287 return -EINVAL;
6288
6289 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6290 params.plink_action =
6291 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6292
6293 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
6294 params.plink_state =
6295 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6296 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6297 params.peer_aid = nla_get_u16(
6298 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6299 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6300 }
6301
6302 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6303 params.local_pm = nla_get_u32(
6304 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6305
6306 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6307 params.opmode_notif_used = true;
6308 params.opmode_notif =
6309 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6310 }
6311
6312 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6313 params.he_6ghz_capa =
6314 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6315
6316 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6317 params.airtime_weight =
6318 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6319
6320 if (params.airtime_weight &&
6321 !wiphy_ext_feature_isset(&rdev->wiphy,
6322 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6323 return -EOPNOTSUPP;
6324
6325 err = nl80211_parse_sta_txpower_setting(info, ¶ms);
6326 if (err)
6327 return err;
6328
6329 /* Include parameters for TDLS peer (will check later) */
6330 err = nl80211_set_station_tdls(info, ¶ms);
6331 if (err)
6332 return err;
6333
6334 params.vlan = get_vlan(info, rdev);
6335 if (IS_ERR(params.vlan))
6336 return PTR_ERR(params.vlan);
6337
6338 switch (dev->ieee80211_ptr->iftype) {
6339 case NL80211_IFTYPE_AP:
6340 case NL80211_IFTYPE_AP_VLAN:
6341 case NL80211_IFTYPE_P2P_GO:
6342 case NL80211_IFTYPE_P2P_CLIENT:
6343 case NL80211_IFTYPE_STATION:
6344 case NL80211_IFTYPE_ADHOC:
6345 case NL80211_IFTYPE_MESH_POINT:
6346 break;
6347 default:
6348 err = -EOPNOTSUPP;
6349 goto out_put_vlan;
6350 }
6351
6352 /* driver will call cfg80211_check_station_change() */
6353 err = rdev_change_station(rdev, dev, mac_addr, ¶ms);
6354
6355 out_put_vlan:
6356 if (params.vlan)
6357 dev_put(params.vlan);
6358
6359 return err;
6360 }
6361
nl80211_new_station(struct sk_buff * skb,struct genl_info * info)6362 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6363 {
6364 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6365 int err;
6366 struct net_device *dev = info->user_ptr[1];
6367 struct station_parameters params;
6368 u8 *mac_addr = NULL;
6369 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6370 BIT(NL80211_STA_FLAG_ASSOCIATED);
6371
6372 memset(¶ms, 0, sizeof(params));
6373
6374 if (!rdev->ops->add_station)
6375 return -EOPNOTSUPP;
6376
6377 if (!info->attrs[NL80211_ATTR_MAC])
6378 return -EINVAL;
6379
6380 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6381 return -EINVAL;
6382
6383 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6384 return -EINVAL;
6385
6386 if (!info->attrs[NL80211_ATTR_STA_AID] &&
6387 !info->attrs[NL80211_ATTR_PEER_AID])
6388 return -EINVAL;
6389
6390 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6391 params.supported_rates =
6392 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6393 params.supported_rates_len =
6394 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6395 params.listen_interval =
6396 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6397
6398 if (info->attrs[NL80211_ATTR_VLAN_ID])
6399 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6400
6401 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6402 params.support_p2p_ps =
6403 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6404 } else {
6405 /*
6406 * if not specified, assume it's supported for P2P GO interface,
6407 * and is NOT supported for AP interface
6408 */
6409 params.support_p2p_ps =
6410 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6411 }
6412
6413 if (info->attrs[NL80211_ATTR_PEER_AID])
6414 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6415 else
6416 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6417
6418 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6419 params.capability =
6420 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6421 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6422 }
6423
6424 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6425 params.ext_capab =
6426 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6427 params.ext_capab_len =
6428 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6429 }
6430
6431 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6432 params.ht_capa =
6433 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6434
6435 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6436 params.vht_capa =
6437 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6438
6439 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6440 params.he_capa =
6441 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6442 params.he_capa_len =
6443 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6444 }
6445
6446 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6447 params.he_6ghz_capa =
6448 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6449
6450 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6451 params.opmode_notif_used = true;
6452 params.opmode_notif =
6453 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6454 }
6455
6456 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6457 params.plink_action =
6458 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6459
6460 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6461 params.airtime_weight =
6462 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6463
6464 if (params.airtime_weight &&
6465 !wiphy_ext_feature_isset(&rdev->wiphy,
6466 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6467 return -EOPNOTSUPP;
6468
6469 err = nl80211_parse_sta_txpower_setting(info, ¶ms);
6470 if (err)
6471 return err;
6472
6473 err = nl80211_parse_sta_channel_info(info, ¶ms);
6474 if (err)
6475 return err;
6476
6477 err = nl80211_parse_sta_wme(info, ¶ms);
6478 if (err)
6479 return err;
6480
6481 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
6482 return -EINVAL;
6483
6484 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6485 * as userspace might just pass through the capabilities from the IEs
6486 * directly, rather than enforcing this restriction and returning an
6487 * error in this case.
6488 */
6489 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6490 params.ht_capa = NULL;
6491 params.vht_capa = NULL;
6492
6493 /* HE requires WME */
6494 if (params.he_capa_len || params.he_6ghz_capa)
6495 return -EINVAL;
6496 }
6497
6498 /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6499 if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6500 return -EINVAL;
6501
6502 /* When you run into this, adjust the code below for the new flag */
6503 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6504
6505 switch (dev->ieee80211_ptr->iftype) {
6506 case NL80211_IFTYPE_AP:
6507 case NL80211_IFTYPE_AP_VLAN:
6508 case NL80211_IFTYPE_P2P_GO:
6509 /* ignore WME attributes if iface/sta is not capable */
6510 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6511 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6512 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6513
6514 /* TDLS peers cannot be added */
6515 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6516 info->attrs[NL80211_ATTR_PEER_AID])
6517 return -EINVAL;
6518 /* but don't bother the driver with it */
6519 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6520
6521 /* allow authenticated/associated only if driver handles it */
6522 if (!(rdev->wiphy.features &
6523 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6524 params.sta_flags_mask & auth_assoc)
6525 return -EINVAL;
6526
6527 /* Older userspace, or userspace wanting to be compatible with
6528 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6529 * and assoc flags in the mask, but assumes the station will be
6530 * added as associated anyway since this was the required driver
6531 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6532 * introduced.
6533 * In order to not bother drivers with this quirk in the API
6534 * set the flags in both the mask and set for new stations in
6535 * this case.
6536 */
6537 if (!(params.sta_flags_mask & auth_assoc)) {
6538 params.sta_flags_mask |= auth_assoc;
6539 params.sta_flags_set |= auth_assoc;
6540 }
6541
6542 /* must be last in here for error handling */
6543 params.vlan = get_vlan(info, rdev);
6544 if (IS_ERR(params.vlan))
6545 return PTR_ERR(params.vlan);
6546 break;
6547 case NL80211_IFTYPE_MESH_POINT:
6548 /* ignore uAPSD data */
6549 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6550
6551 /* associated is disallowed */
6552 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6553 return -EINVAL;
6554 /* TDLS peers cannot be added */
6555 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6556 info->attrs[NL80211_ATTR_PEER_AID])
6557 return -EINVAL;
6558 break;
6559 case NL80211_IFTYPE_STATION:
6560 case NL80211_IFTYPE_P2P_CLIENT:
6561 /* ignore uAPSD data */
6562 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6563
6564 /* these are disallowed */
6565 if (params.sta_flags_mask &
6566 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6567 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6568 return -EINVAL;
6569 /* Only TDLS peers can be added */
6570 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6571 return -EINVAL;
6572 /* Can only add if TDLS ... */
6573 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6574 return -EOPNOTSUPP;
6575 /* ... with external setup is supported */
6576 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6577 return -EOPNOTSUPP;
6578 /*
6579 * Older wpa_supplicant versions always mark the TDLS peer
6580 * as authorized, but it shouldn't yet be.
6581 */
6582 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6583 break;
6584 default:
6585 return -EOPNOTSUPP;
6586 }
6587
6588 /* be aware of params.vlan when changing code here */
6589
6590 err = rdev_add_station(rdev, dev, mac_addr, ¶ms);
6591
6592 if (params.vlan)
6593 dev_put(params.vlan);
6594 return err;
6595 }
6596
nl80211_del_station(struct sk_buff * skb,struct genl_info * info)6597 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6598 {
6599 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6600 struct net_device *dev = info->user_ptr[1];
6601 struct station_del_parameters params;
6602
6603 memset(¶ms, 0, sizeof(params));
6604
6605 if (info->attrs[NL80211_ATTR_MAC])
6606 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6607
6608 switch (dev->ieee80211_ptr->iftype) {
6609 case NL80211_IFTYPE_AP:
6610 case NL80211_IFTYPE_AP_VLAN:
6611 case NL80211_IFTYPE_MESH_POINT:
6612 case NL80211_IFTYPE_P2P_GO:
6613 /* always accept these */
6614 break;
6615 case NL80211_IFTYPE_ADHOC:
6616 /* conditionally accept */
6617 if (wiphy_ext_feature_isset(&rdev->wiphy,
6618 NL80211_EXT_FEATURE_DEL_IBSS_STA))
6619 break;
6620 return -EINVAL;
6621 default:
6622 return -EINVAL;
6623 }
6624
6625 if (!rdev->ops->del_station)
6626 return -EOPNOTSUPP;
6627
6628 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6629 params.subtype =
6630 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6631 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6632 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6633 return -EINVAL;
6634 } else {
6635 /* Default to Deauthentication frame */
6636 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6637 }
6638
6639 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6640 params.reason_code =
6641 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6642 if (params.reason_code == 0)
6643 return -EINVAL; /* 0 is reserved */
6644 } else {
6645 /* Default to reason code 2 */
6646 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6647 }
6648
6649 return rdev_del_station(rdev, dev, ¶ms);
6650 }
6651
nl80211_send_mpath(struct sk_buff * msg,u32 portid,u32 seq,int flags,struct net_device * dev,u8 * dst,u8 * next_hop,struct mpath_info * pinfo)6652 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6653 int flags, struct net_device *dev,
6654 u8 *dst, u8 *next_hop,
6655 struct mpath_info *pinfo)
6656 {
6657 void *hdr;
6658 struct nlattr *pinfoattr;
6659
6660 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6661 if (!hdr)
6662 return -1;
6663
6664 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6665 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6666 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6667 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6668 goto nla_put_failure;
6669
6670 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6671 if (!pinfoattr)
6672 goto nla_put_failure;
6673 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6674 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6675 pinfo->frame_qlen))
6676 goto nla_put_failure;
6677 if (((pinfo->filled & MPATH_INFO_SN) &&
6678 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6679 ((pinfo->filled & MPATH_INFO_METRIC) &&
6680 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6681 pinfo->metric)) ||
6682 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6683 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6684 pinfo->exptime)) ||
6685 ((pinfo->filled & MPATH_INFO_FLAGS) &&
6686 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6687 pinfo->flags)) ||
6688 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6689 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6690 pinfo->discovery_timeout)) ||
6691 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6692 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6693 pinfo->discovery_retries)) ||
6694 ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6695 nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6696 pinfo->hop_count)) ||
6697 ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6698 nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6699 pinfo->path_change_count)))
6700 goto nla_put_failure;
6701
6702 nla_nest_end(msg, pinfoattr);
6703
6704 genlmsg_end(msg, hdr);
6705 return 0;
6706
6707 nla_put_failure:
6708 genlmsg_cancel(msg, hdr);
6709 return -EMSGSIZE;
6710 }
6711
nl80211_dump_mpath(struct sk_buff * skb,struct netlink_callback * cb)6712 static int nl80211_dump_mpath(struct sk_buff *skb,
6713 struct netlink_callback *cb)
6714 {
6715 struct mpath_info pinfo;
6716 struct cfg80211_registered_device *rdev;
6717 struct wireless_dev *wdev;
6718 u8 dst[ETH_ALEN];
6719 u8 next_hop[ETH_ALEN];
6720 int path_idx = cb->args[2];
6721 int err;
6722
6723 rtnl_lock();
6724 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6725 if (err)
6726 goto out_err;
6727
6728 if (!rdev->ops->dump_mpath) {
6729 err = -EOPNOTSUPP;
6730 goto out_err;
6731 }
6732
6733 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6734 err = -EOPNOTSUPP;
6735 goto out_err;
6736 }
6737
6738 while (1) {
6739 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6740 next_hop, &pinfo);
6741 if (err == -ENOENT)
6742 break;
6743 if (err)
6744 goto out_err;
6745
6746 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6747 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6748 wdev->netdev, dst, next_hop,
6749 &pinfo) < 0)
6750 goto out;
6751
6752 path_idx++;
6753 }
6754
6755 out:
6756 cb->args[2] = path_idx;
6757 err = skb->len;
6758 out_err:
6759 rtnl_unlock();
6760 return err;
6761 }
6762
nl80211_get_mpath(struct sk_buff * skb,struct genl_info * info)6763 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6764 {
6765 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6766 int err;
6767 struct net_device *dev = info->user_ptr[1];
6768 struct mpath_info pinfo;
6769 struct sk_buff *msg;
6770 u8 *dst = NULL;
6771 u8 next_hop[ETH_ALEN];
6772
6773 memset(&pinfo, 0, sizeof(pinfo));
6774
6775 if (!info->attrs[NL80211_ATTR_MAC])
6776 return -EINVAL;
6777
6778 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6779
6780 if (!rdev->ops->get_mpath)
6781 return -EOPNOTSUPP;
6782
6783 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6784 return -EOPNOTSUPP;
6785
6786 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6787 if (err)
6788 return err;
6789
6790 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6791 if (!msg)
6792 return -ENOMEM;
6793
6794 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6795 dev, dst, next_hop, &pinfo) < 0) {
6796 nlmsg_free(msg);
6797 return -ENOBUFS;
6798 }
6799
6800 return genlmsg_reply(msg, info);
6801 }
6802
nl80211_set_mpath(struct sk_buff * skb,struct genl_info * info)6803 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6804 {
6805 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6806 struct net_device *dev = info->user_ptr[1];
6807 u8 *dst = NULL;
6808 u8 *next_hop = NULL;
6809
6810 if (!info->attrs[NL80211_ATTR_MAC])
6811 return -EINVAL;
6812
6813 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6814 return -EINVAL;
6815
6816 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6817 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6818
6819 if (!rdev->ops->change_mpath)
6820 return -EOPNOTSUPP;
6821
6822 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6823 return -EOPNOTSUPP;
6824
6825 return rdev_change_mpath(rdev, dev, dst, next_hop);
6826 }
6827
nl80211_new_mpath(struct sk_buff * skb,struct genl_info * info)6828 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6829 {
6830 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6831 struct net_device *dev = info->user_ptr[1];
6832 u8 *dst = NULL;
6833 u8 *next_hop = NULL;
6834
6835 if (!info->attrs[NL80211_ATTR_MAC])
6836 return -EINVAL;
6837
6838 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6839 return -EINVAL;
6840
6841 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6842 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6843
6844 if (!rdev->ops->add_mpath)
6845 return -EOPNOTSUPP;
6846
6847 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6848 return -EOPNOTSUPP;
6849
6850 return rdev_add_mpath(rdev, dev, dst, next_hop);
6851 }
6852
nl80211_del_mpath(struct sk_buff * skb,struct genl_info * info)6853 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6854 {
6855 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6856 struct net_device *dev = info->user_ptr[1];
6857 u8 *dst = NULL;
6858
6859 if (info->attrs[NL80211_ATTR_MAC])
6860 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6861
6862 if (!rdev->ops->del_mpath)
6863 return -EOPNOTSUPP;
6864
6865 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6866 return -EOPNOTSUPP;
6867
6868 return rdev_del_mpath(rdev, dev, dst);
6869 }
6870
nl80211_get_mpp(struct sk_buff * skb,struct genl_info * info)6871 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6872 {
6873 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6874 int err;
6875 struct net_device *dev = info->user_ptr[1];
6876 struct mpath_info pinfo;
6877 struct sk_buff *msg;
6878 u8 *dst = NULL;
6879 u8 mpp[ETH_ALEN];
6880
6881 memset(&pinfo, 0, sizeof(pinfo));
6882
6883 if (!info->attrs[NL80211_ATTR_MAC])
6884 return -EINVAL;
6885
6886 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6887
6888 if (!rdev->ops->get_mpp)
6889 return -EOPNOTSUPP;
6890
6891 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6892 return -EOPNOTSUPP;
6893
6894 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6895 if (err)
6896 return err;
6897
6898 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6899 if (!msg)
6900 return -ENOMEM;
6901
6902 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6903 dev, dst, mpp, &pinfo) < 0) {
6904 nlmsg_free(msg);
6905 return -ENOBUFS;
6906 }
6907
6908 return genlmsg_reply(msg, info);
6909 }
6910
nl80211_dump_mpp(struct sk_buff * skb,struct netlink_callback * cb)6911 static int nl80211_dump_mpp(struct sk_buff *skb,
6912 struct netlink_callback *cb)
6913 {
6914 struct mpath_info pinfo;
6915 struct cfg80211_registered_device *rdev;
6916 struct wireless_dev *wdev;
6917 u8 dst[ETH_ALEN];
6918 u8 mpp[ETH_ALEN];
6919 int path_idx = cb->args[2];
6920 int err;
6921
6922 rtnl_lock();
6923 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6924 if (err)
6925 goto out_err;
6926
6927 if (!rdev->ops->dump_mpp) {
6928 err = -EOPNOTSUPP;
6929 goto out_err;
6930 }
6931
6932 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6933 err = -EOPNOTSUPP;
6934 goto out_err;
6935 }
6936
6937 while (1) {
6938 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6939 mpp, &pinfo);
6940 if (err == -ENOENT)
6941 break;
6942 if (err)
6943 goto out_err;
6944
6945 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6946 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6947 wdev->netdev, dst, mpp,
6948 &pinfo) < 0)
6949 goto out;
6950
6951 path_idx++;
6952 }
6953
6954 out:
6955 cb->args[2] = path_idx;
6956 err = skb->len;
6957 out_err:
6958 rtnl_unlock();
6959 return err;
6960 }
6961
nl80211_set_bss(struct sk_buff * skb,struct genl_info * info)6962 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6963 {
6964 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6965 struct net_device *dev = info->user_ptr[1];
6966 struct wireless_dev *wdev = dev->ieee80211_ptr;
6967 struct bss_parameters params;
6968 int err;
6969
6970 memset(¶ms, 0, sizeof(params));
6971 /* default to not changing parameters */
6972 params.use_cts_prot = -1;
6973 params.use_short_preamble = -1;
6974 params.use_short_slot_time = -1;
6975 params.ap_isolate = -1;
6976 params.ht_opmode = -1;
6977 params.p2p_ctwindow = -1;
6978 params.p2p_opp_ps = -1;
6979
6980 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6981 params.use_cts_prot =
6982 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6983 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6984 params.use_short_preamble =
6985 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6986 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6987 params.use_short_slot_time =
6988 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6989 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6990 params.basic_rates =
6991 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6992 params.basic_rates_len =
6993 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6994 }
6995 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6996 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6997 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6998 params.ht_opmode =
6999 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7000
7001 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7002 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7003 return -EINVAL;
7004 params.p2p_ctwindow =
7005 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7006 if (params.p2p_ctwindow != 0 &&
7007 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7008 return -EINVAL;
7009 }
7010
7011 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7012 u8 tmp;
7013
7014 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7015 return -EINVAL;
7016 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7017 params.p2p_opp_ps = tmp;
7018 if (params.p2p_opp_ps &&
7019 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7020 return -EINVAL;
7021 }
7022
7023 if (!rdev->ops->change_bss)
7024 return -EOPNOTSUPP;
7025
7026 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7027 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7028 return -EOPNOTSUPP;
7029
7030 wdev_lock(wdev);
7031 err = rdev_change_bss(rdev, dev, ¶ms);
7032 wdev_unlock(wdev);
7033
7034 return err;
7035 }
7036
nl80211_req_set_reg(struct sk_buff * skb,struct genl_info * info)7037 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7038 {
7039 char *data = NULL;
7040 bool is_indoor;
7041 enum nl80211_user_reg_hint_type user_reg_hint_type;
7042 u32 owner_nlportid;
7043
7044 /*
7045 * You should only get this when cfg80211 hasn't yet initialized
7046 * completely when built-in to the kernel right between the time
7047 * window between nl80211_init() and regulatory_init(), if that is
7048 * even possible.
7049 */
7050 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7051 return -EINPROGRESS;
7052
7053 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7054 user_reg_hint_type =
7055 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7056 else
7057 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7058
7059 switch (user_reg_hint_type) {
7060 case NL80211_USER_REG_HINT_USER:
7061 case NL80211_USER_REG_HINT_CELL_BASE:
7062 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7063 return -EINVAL;
7064
7065 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7066 return regulatory_hint_user(data, user_reg_hint_type);
7067 case NL80211_USER_REG_HINT_INDOOR:
7068 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7069 owner_nlportid = info->snd_portid;
7070 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7071 } else {
7072 owner_nlportid = 0;
7073 is_indoor = true;
7074 }
7075
7076 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7077 default:
7078 return -EINVAL;
7079 }
7080 }
7081
nl80211_reload_regdb(struct sk_buff * skb,struct genl_info * info)7082 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7083 {
7084 return reg_reload_regdb();
7085 }
7086
nl80211_get_mesh_config(struct sk_buff * skb,struct genl_info * info)7087 static int nl80211_get_mesh_config(struct sk_buff *skb,
7088 struct genl_info *info)
7089 {
7090 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7091 struct net_device *dev = info->user_ptr[1];
7092 struct wireless_dev *wdev = dev->ieee80211_ptr;
7093 struct mesh_config cur_params;
7094 int err = 0;
7095 void *hdr;
7096 struct nlattr *pinfoattr;
7097 struct sk_buff *msg;
7098
7099 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7100 return -EOPNOTSUPP;
7101
7102 if (!rdev->ops->get_mesh_config)
7103 return -EOPNOTSUPP;
7104
7105 wdev_lock(wdev);
7106 /* If not connected, get default parameters */
7107 if (!wdev->mesh_id_len)
7108 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7109 else
7110 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7111 wdev_unlock(wdev);
7112
7113 if (err)
7114 return err;
7115
7116 /* Draw up a netlink message to send back */
7117 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7118 if (!msg)
7119 return -ENOMEM;
7120 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7121 NL80211_CMD_GET_MESH_CONFIG);
7122 if (!hdr)
7123 goto out;
7124 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7125 if (!pinfoattr)
7126 goto nla_put_failure;
7127 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7128 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7129 cur_params.dot11MeshRetryTimeout) ||
7130 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7131 cur_params.dot11MeshConfirmTimeout) ||
7132 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7133 cur_params.dot11MeshHoldingTimeout) ||
7134 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7135 cur_params.dot11MeshMaxPeerLinks) ||
7136 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7137 cur_params.dot11MeshMaxRetries) ||
7138 nla_put_u8(msg, NL80211_MESHCONF_TTL,
7139 cur_params.dot11MeshTTL) ||
7140 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7141 cur_params.element_ttl) ||
7142 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7143 cur_params.auto_open_plinks) ||
7144 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7145 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7146 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7147 cur_params.dot11MeshHWMPmaxPREQretries) ||
7148 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7149 cur_params.path_refresh_time) ||
7150 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7151 cur_params.min_discovery_timeout) ||
7152 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7153 cur_params.dot11MeshHWMPactivePathTimeout) ||
7154 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7155 cur_params.dot11MeshHWMPpreqMinInterval) ||
7156 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7157 cur_params.dot11MeshHWMPperrMinInterval) ||
7158 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7159 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7160 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7161 cur_params.dot11MeshHWMPRootMode) ||
7162 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7163 cur_params.dot11MeshHWMPRannInterval) ||
7164 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7165 cur_params.dot11MeshGateAnnouncementProtocol) ||
7166 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7167 cur_params.dot11MeshForwarding) ||
7168 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7169 cur_params.rssi_threshold) ||
7170 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7171 cur_params.ht_opmode) ||
7172 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7173 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7174 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7175 cur_params.dot11MeshHWMProotInterval) ||
7176 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7177 cur_params.dot11MeshHWMPconfirmationInterval) ||
7178 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7179 cur_params.power_mode) ||
7180 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7181 cur_params.dot11MeshAwakeWindowDuration) ||
7182 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7183 cur_params.plink_timeout) ||
7184 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7185 cur_params.dot11MeshConnectedToMeshGate) ||
7186 nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7187 cur_params.dot11MeshNolearn) ||
7188 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7189 cur_params.dot11MeshConnectedToAuthServer))
7190 goto nla_put_failure;
7191 nla_nest_end(msg, pinfoattr);
7192 genlmsg_end(msg, hdr);
7193 return genlmsg_reply(msg, info);
7194
7195 nla_put_failure:
7196 out:
7197 nlmsg_free(msg);
7198 return -ENOBUFS;
7199 }
7200
7201 static const struct nla_policy
7202 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7203 [NL80211_MESHCONF_RETRY_TIMEOUT] =
7204 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7205 [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7206 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7207 [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7208 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7209 [NL80211_MESHCONF_MAX_PEER_LINKS] =
7210 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7211 [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7212 [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7213 [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7214 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7215 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7216 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7217 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7218 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7219 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7220 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7221 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7222 NLA_POLICY_MIN(NLA_U16, 1),
7223 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7224 NLA_POLICY_MIN(NLA_U16, 1),
7225 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7226 NLA_POLICY_MIN(NLA_U16, 1),
7227 [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7228 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7229 NLA_POLICY_MIN(NLA_U16, 1),
7230 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7231 [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7232 [NL80211_MESHCONF_RSSI_THRESHOLD] =
7233 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7234 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7235 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7236 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7237 NLA_POLICY_MIN(NLA_U16, 1),
7238 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7239 NLA_POLICY_MIN(NLA_U16, 1),
7240 [NL80211_MESHCONF_POWER_MODE] =
7241 NLA_POLICY_RANGE(NLA_U32,
7242 NL80211_MESH_POWER_ACTIVE,
7243 NL80211_MESH_POWER_MAX),
7244 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7245 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7246 [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7247 [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7248 [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7249 };
7250
7251 static const struct nla_policy
7252 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7253 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7254 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7255 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7256 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7257 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7258 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7259 [NL80211_MESH_SETUP_IE] =
7260 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7261 IEEE80211_MAX_DATA_LEN),
7262 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7263 };
7264
nl80211_parse_mesh_config(struct genl_info * info,struct mesh_config * cfg,u32 * mask_out)7265 static int nl80211_parse_mesh_config(struct genl_info *info,
7266 struct mesh_config *cfg,
7267 u32 *mask_out)
7268 {
7269 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7270 u32 mask = 0;
7271 u16 ht_opmode;
7272
7273 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn) \
7274 do { \
7275 if (tb[attr]) { \
7276 cfg->param = fn(tb[attr]); \
7277 mask |= BIT((attr) - 1); \
7278 } \
7279 } while (0)
7280
7281 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7282 return -EINVAL;
7283 if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
7284 return -EINVAL;
7285
7286 /* This makes sure that there aren't more than 32 mesh config
7287 * parameters (otherwise our bitfield scheme would not work.) */
7288 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
7289
7290 /* Fill in the params struct */
7291 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
7292 NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7293 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7294 NL80211_MESHCONF_CONFIRM_TIMEOUT,
7295 nla_get_u16);
7296 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7297 NL80211_MESHCONF_HOLDING_TIMEOUT,
7298 nla_get_u16);
7299 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7300 NL80211_MESHCONF_MAX_PEER_LINKS,
7301 nla_get_u16);
7302 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7303 NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7304 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7305 NL80211_MESHCONF_TTL, nla_get_u8);
7306 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7307 NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7308 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7309 NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7310 nla_get_u8);
7311 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7312 mask,
7313 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7314 nla_get_u32);
7315 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7316 NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7317 nla_get_u8);
7318 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7319 NL80211_MESHCONF_PATH_REFRESH_TIME,
7320 nla_get_u32);
7321 if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7322 (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7323 return -EINVAL;
7324 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7325 NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7326 nla_get_u16);
7327 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7328 mask,
7329 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7330 nla_get_u32);
7331 if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7332 (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7333 cfg->dot11MeshHWMPactivePathTimeout > 65535))
7334 return -EINVAL;
7335 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7336 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7337 nla_get_u16);
7338 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7339 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7340 nla_get_u16);
7341 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7342 dot11MeshHWMPnetDiameterTraversalTime, mask,
7343 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7344 nla_get_u16);
7345 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7346 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7347 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7348 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7349 nla_get_u16);
7350 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7351 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7352 nla_get_u8);
7353 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7354 NL80211_MESHCONF_FORWARDING, nla_get_u8);
7355 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7356 NL80211_MESHCONF_RSSI_THRESHOLD,
7357 nla_get_s32);
7358 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7359 NL80211_MESHCONF_CONNECTED_TO_GATE,
7360 nla_get_u8);
7361 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7362 NL80211_MESHCONF_CONNECTED_TO_AS,
7363 nla_get_u8);
7364 /*
7365 * Check HT operation mode based on
7366 * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7367 */
7368 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7369 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7370
7371 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7372 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7373 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7374 return -EINVAL;
7375
7376 /* NON_HT_STA bit is reserved, but some programs set it */
7377 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7378
7379 cfg->ht_opmode = ht_opmode;
7380 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7381 }
7382 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7383 dot11MeshHWMPactivePathToRootTimeout, mask,
7384 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7385 nla_get_u32);
7386 if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7387 (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7388 cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7389 return -EINVAL;
7390 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7391 NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7392 nla_get_u16);
7393 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7394 mask,
7395 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7396 nla_get_u16);
7397 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7398 NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7399 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7400 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7401 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7402 NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7403 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7404 NL80211_MESHCONF_NOLEARN, nla_get_u8);
7405 if (mask_out)
7406 *mask_out = mask;
7407
7408 return 0;
7409
7410 #undef FILL_IN_MESH_PARAM_IF_SET
7411 }
7412
nl80211_parse_mesh_setup(struct genl_info * info,struct mesh_setup * setup)7413 static int nl80211_parse_mesh_setup(struct genl_info *info,
7414 struct mesh_setup *setup)
7415 {
7416 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7417 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7418
7419 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7420 return -EINVAL;
7421 if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7422 return -EINVAL;
7423
7424 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7425 setup->sync_method =
7426 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7427 IEEE80211_SYNC_METHOD_VENDOR :
7428 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7429
7430 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7431 setup->path_sel_proto =
7432 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7433 IEEE80211_PATH_PROTOCOL_VENDOR :
7434 IEEE80211_PATH_PROTOCOL_HWMP;
7435
7436 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7437 setup->path_metric =
7438 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7439 IEEE80211_PATH_METRIC_VENDOR :
7440 IEEE80211_PATH_METRIC_AIRTIME;
7441
7442 if (tb[NL80211_MESH_SETUP_IE]) {
7443 struct nlattr *ieattr =
7444 tb[NL80211_MESH_SETUP_IE];
7445 setup->ie = nla_data(ieattr);
7446 setup->ie_len = nla_len(ieattr);
7447 }
7448 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7449 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7450 return -EINVAL;
7451 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7452 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7453 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7454 if (setup->is_secure)
7455 setup->user_mpm = true;
7456
7457 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7458 if (!setup->user_mpm)
7459 return -EINVAL;
7460 setup->auth_id =
7461 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7462 }
7463
7464 return 0;
7465 }
7466
nl80211_update_mesh_config(struct sk_buff * skb,struct genl_info * info)7467 static int nl80211_update_mesh_config(struct sk_buff *skb,
7468 struct genl_info *info)
7469 {
7470 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7471 struct net_device *dev = info->user_ptr[1];
7472 struct wireless_dev *wdev = dev->ieee80211_ptr;
7473 struct mesh_config cfg;
7474 u32 mask;
7475 int err;
7476
7477 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7478 return -EOPNOTSUPP;
7479
7480 if (!rdev->ops->update_mesh_config)
7481 return -EOPNOTSUPP;
7482
7483 err = nl80211_parse_mesh_config(info, &cfg, &mask);
7484 if (err)
7485 return err;
7486
7487 wdev_lock(wdev);
7488 if (!wdev->mesh_id_len)
7489 err = -ENOLINK;
7490
7491 if (!err)
7492 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7493
7494 wdev_unlock(wdev);
7495
7496 return err;
7497 }
7498
nl80211_put_regdom(const struct ieee80211_regdomain * regdom,struct sk_buff * msg)7499 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7500 struct sk_buff *msg)
7501 {
7502 struct nlattr *nl_reg_rules;
7503 unsigned int i;
7504
7505 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7506 (regdom->dfs_region &&
7507 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7508 goto nla_put_failure;
7509
7510 nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7511 if (!nl_reg_rules)
7512 goto nla_put_failure;
7513
7514 for (i = 0; i < regdom->n_reg_rules; i++) {
7515 struct nlattr *nl_reg_rule;
7516 const struct ieee80211_reg_rule *reg_rule;
7517 const struct ieee80211_freq_range *freq_range;
7518 const struct ieee80211_power_rule *power_rule;
7519 unsigned int max_bandwidth_khz;
7520
7521 reg_rule = ®dom->reg_rules[i];
7522 freq_range = ®_rule->freq_range;
7523 power_rule = ®_rule->power_rule;
7524
7525 nl_reg_rule = nla_nest_start_noflag(msg, i);
7526 if (!nl_reg_rule)
7527 goto nla_put_failure;
7528
7529 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7530 if (!max_bandwidth_khz)
7531 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7532 reg_rule);
7533
7534 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7535 reg_rule->flags) ||
7536 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7537 freq_range->start_freq_khz) ||
7538 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7539 freq_range->end_freq_khz) ||
7540 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7541 max_bandwidth_khz) ||
7542 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7543 power_rule->max_antenna_gain) ||
7544 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7545 power_rule->max_eirp) ||
7546 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7547 reg_rule->dfs_cac_ms))
7548 goto nla_put_failure;
7549
7550 nla_nest_end(msg, nl_reg_rule);
7551 }
7552
7553 nla_nest_end(msg, nl_reg_rules);
7554 return 0;
7555
7556 nla_put_failure:
7557 return -EMSGSIZE;
7558 }
7559
nl80211_get_reg_do(struct sk_buff * skb,struct genl_info * info)7560 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7561 {
7562 const struct ieee80211_regdomain *regdom = NULL;
7563 struct cfg80211_registered_device *rdev;
7564 struct wiphy *wiphy = NULL;
7565 struct sk_buff *msg;
7566 void *hdr;
7567
7568 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7569 if (!msg)
7570 return -ENOBUFS;
7571
7572 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7573 NL80211_CMD_GET_REG);
7574 if (!hdr)
7575 goto put_failure;
7576
7577 if (info->attrs[NL80211_ATTR_WIPHY]) {
7578 bool self_managed;
7579
7580 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7581 if (IS_ERR(rdev)) {
7582 nlmsg_free(msg);
7583 return PTR_ERR(rdev);
7584 }
7585
7586 wiphy = &rdev->wiphy;
7587 self_managed = wiphy->regulatory_flags &
7588 REGULATORY_WIPHY_SELF_MANAGED;
7589 regdom = get_wiphy_regdom(wiphy);
7590
7591 /* a self-managed-reg device must have a private regdom */
7592 if (WARN_ON(!regdom && self_managed)) {
7593 nlmsg_free(msg);
7594 return -EINVAL;
7595 }
7596
7597 if (regdom &&
7598 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7599 goto nla_put_failure;
7600 }
7601
7602 if (!wiphy && reg_last_request_cell_base() &&
7603 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7604 NL80211_USER_REG_HINT_CELL_BASE))
7605 goto nla_put_failure;
7606
7607 rcu_read_lock();
7608
7609 if (!regdom)
7610 regdom = rcu_dereference(cfg80211_regdomain);
7611
7612 if (nl80211_put_regdom(regdom, msg))
7613 goto nla_put_failure_rcu;
7614
7615 rcu_read_unlock();
7616
7617 genlmsg_end(msg, hdr);
7618 return genlmsg_reply(msg, info);
7619
7620 nla_put_failure_rcu:
7621 rcu_read_unlock();
7622 nla_put_failure:
7623 put_failure:
7624 nlmsg_free(msg);
7625 return -EMSGSIZE;
7626 }
7627
nl80211_send_regdom(struct sk_buff * msg,struct netlink_callback * cb,u32 seq,int flags,struct wiphy * wiphy,const struct ieee80211_regdomain * regdom)7628 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7629 u32 seq, int flags, struct wiphy *wiphy,
7630 const struct ieee80211_regdomain *regdom)
7631 {
7632 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7633 NL80211_CMD_GET_REG);
7634
7635 if (!hdr)
7636 return -1;
7637
7638 genl_dump_check_consistent(cb, hdr);
7639
7640 if (nl80211_put_regdom(regdom, msg))
7641 goto nla_put_failure;
7642
7643 if (!wiphy && reg_last_request_cell_base() &&
7644 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7645 NL80211_USER_REG_HINT_CELL_BASE))
7646 goto nla_put_failure;
7647
7648 if (wiphy &&
7649 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7650 goto nla_put_failure;
7651
7652 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7653 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7654 goto nla_put_failure;
7655
7656 genlmsg_end(msg, hdr);
7657 return 0;
7658
7659 nla_put_failure:
7660 genlmsg_cancel(msg, hdr);
7661 return -EMSGSIZE;
7662 }
7663
nl80211_get_reg_dump(struct sk_buff * skb,struct netlink_callback * cb)7664 static int nl80211_get_reg_dump(struct sk_buff *skb,
7665 struct netlink_callback *cb)
7666 {
7667 const struct ieee80211_regdomain *regdom = NULL;
7668 struct cfg80211_registered_device *rdev;
7669 int err, reg_idx, start = cb->args[2];
7670
7671 rtnl_lock();
7672
7673 if (cfg80211_regdomain && start == 0) {
7674 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7675 NLM_F_MULTI, NULL,
7676 rtnl_dereference(cfg80211_regdomain));
7677 if (err < 0)
7678 goto out_err;
7679 }
7680
7681 /* the global regdom is idx 0 */
7682 reg_idx = 1;
7683 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7684 regdom = get_wiphy_regdom(&rdev->wiphy);
7685 if (!regdom)
7686 continue;
7687
7688 if (++reg_idx <= start)
7689 continue;
7690
7691 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7692 NLM_F_MULTI, &rdev->wiphy, regdom);
7693 if (err < 0) {
7694 reg_idx--;
7695 break;
7696 }
7697 }
7698
7699 cb->args[2] = reg_idx;
7700 err = skb->len;
7701 out_err:
7702 rtnl_unlock();
7703 return err;
7704 }
7705
7706 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7707 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7708 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
7709 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
7710 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
7711 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
7712 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
7713 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
7714 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
7715 };
7716
parse_reg_rule(struct nlattr * tb[],struct ieee80211_reg_rule * reg_rule)7717 static int parse_reg_rule(struct nlattr *tb[],
7718 struct ieee80211_reg_rule *reg_rule)
7719 {
7720 struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
7721 struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
7722
7723 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7724 return -EINVAL;
7725 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7726 return -EINVAL;
7727 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7728 return -EINVAL;
7729 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7730 return -EINVAL;
7731 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7732 return -EINVAL;
7733
7734 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7735
7736 freq_range->start_freq_khz =
7737 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7738 freq_range->end_freq_khz =
7739 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7740 freq_range->max_bandwidth_khz =
7741 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7742
7743 power_rule->max_eirp =
7744 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7745
7746 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7747 power_rule->max_antenna_gain =
7748 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7749
7750 if (tb[NL80211_ATTR_DFS_CAC_TIME])
7751 reg_rule->dfs_cac_ms =
7752 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7753
7754 return 0;
7755 }
7756
nl80211_set_reg(struct sk_buff * skb,struct genl_info * info)7757 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7758 {
7759 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7760 struct nlattr *nl_reg_rule;
7761 char *alpha2;
7762 int rem_reg_rules, r;
7763 u32 num_rules = 0, rule_idx = 0;
7764 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7765 struct ieee80211_regdomain *rd;
7766
7767 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7768 return -EINVAL;
7769
7770 if (!info->attrs[NL80211_ATTR_REG_RULES])
7771 return -EINVAL;
7772
7773 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7774
7775 if (info->attrs[NL80211_ATTR_DFS_REGION])
7776 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7777
7778 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7779 rem_reg_rules) {
7780 num_rules++;
7781 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7782 return -EINVAL;
7783 }
7784
7785 if (!reg_is_valid_request(alpha2))
7786 return -EINVAL;
7787
7788 rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7789 if (!rd)
7790 return -ENOMEM;
7791
7792 rd->n_reg_rules = num_rules;
7793 rd->alpha2[0] = alpha2[0];
7794 rd->alpha2[1] = alpha2[1];
7795
7796 /*
7797 * Disable DFS master mode if the DFS region was
7798 * not supported or known on this kernel.
7799 */
7800 if (reg_supported_dfs_region(dfs_region))
7801 rd->dfs_region = dfs_region;
7802
7803 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7804 rem_reg_rules) {
7805 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7806 nl_reg_rule, reg_rule_policy,
7807 info->extack);
7808 if (r)
7809 goto bad_reg;
7810 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7811 if (r)
7812 goto bad_reg;
7813
7814 rule_idx++;
7815
7816 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7817 r = -EINVAL;
7818 goto bad_reg;
7819 }
7820 }
7821
7822 /* set_regdom takes ownership of rd */
7823 return set_regdom(rd, REGD_SOURCE_CRDA);
7824 bad_reg:
7825 kfree(rd);
7826 return r;
7827 }
7828 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7829
validate_scan_freqs(struct nlattr * freqs)7830 static int validate_scan_freqs(struct nlattr *freqs)
7831 {
7832 struct nlattr *attr1, *attr2;
7833 int n_channels = 0, tmp1, tmp2;
7834
7835 nla_for_each_nested(attr1, freqs, tmp1)
7836 if (nla_len(attr1) != sizeof(u32))
7837 return 0;
7838
7839 nla_for_each_nested(attr1, freqs, tmp1) {
7840 n_channels++;
7841 /*
7842 * Some hardware has a limited channel list for
7843 * scanning, and it is pretty much nonsensical
7844 * to scan for a channel twice, so disallow that
7845 * and don't require drivers to check that the
7846 * channel list they get isn't longer than what
7847 * they can scan, as long as they can scan all
7848 * the channels they registered at once.
7849 */
7850 nla_for_each_nested(attr2, freqs, tmp2)
7851 if (attr1 != attr2 &&
7852 nla_get_u32(attr1) == nla_get_u32(attr2))
7853 return 0;
7854 }
7855
7856 return n_channels;
7857 }
7858
is_band_valid(struct wiphy * wiphy,enum nl80211_band b)7859 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7860 {
7861 return b < NUM_NL80211_BANDS && wiphy->bands[b];
7862 }
7863
parse_bss_select(struct nlattr * nla,struct wiphy * wiphy,struct cfg80211_bss_selection * bss_select)7864 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7865 struct cfg80211_bss_selection *bss_select)
7866 {
7867 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7868 struct nlattr *nest;
7869 int err;
7870 bool found = false;
7871 int i;
7872
7873 /* only process one nested attribute */
7874 nest = nla_data(nla);
7875 if (!nla_ok(nest, nla_len(nest)))
7876 return -EINVAL;
7877
7878 err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7879 nest, nl80211_bss_select_policy,
7880 NULL);
7881 if (err)
7882 return err;
7883
7884 /* only one attribute may be given */
7885 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7886 if (attr[i]) {
7887 if (found)
7888 return -EINVAL;
7889 found = true;
7890 }
7891 }
7892
7893 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7894
7895 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7896 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7897
7898 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7899 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7900 bss_select->param.band_pref =
7901 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7902 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7903 return -EINVAL;
7904 }
7905
7906 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7907 struct nl80211_bss_select_rssi_adjust *adj_param;
7908
7909 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7910 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7911 bss_select->param.adjust.band = adj_param->band;
7912 bss_select->param.adjust.delta = adj_param->delta;
7913 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7914 return -EINVAL;
7915 }
7916
7917 /* user-space did not provide behaviour attribute */
7918 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7919 return -EINVAL;
7920
7921 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7922 return -EINVAL;
7923
7924 return 0;
7925 }
7926
nl80211_parse_random_mac(struct nlattr ** attrs,u8 * mac_addr,u8 * mac_addr_mask)7927 int nl80211_parse_random_mac(struct nlattr **attrs,
7928 u8 *mac_addr, u8 *mac_addr_mask)
7929 {
7930 int i;
7931
7932 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7933 eth_zero_addr(mac_addr);
7934 eth_zero_addr(mac_addr_mask);
7935 mac_addr[0] = 0x2;
7936 mac_addr_mask[0] = 0x3;
7937
7938 return 0;
7939 }
7940
7941 /* need both or none */
7942 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7943 return -EINVAL;
7944
7945 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7946 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7947
7948 /* don't allow or configure an mcast address */
7949 if (!is_multicast_ether_addr(mac_addr_mask) ||
7950 is_multicast_ether_addr(mac_addr))
7951 return -EINVAL;
7952
7953 /*
7954 * allow users to pass a MAC address that has bits set outside
7955 * of the mask, but don't bother drivers with having to deal
7956 * with such bits
7957 */
7958 for (i = 0; i < ETH_ALEN; i++)
7959 mac_addr[i] &= mac_addr_mask[i];
7960
7961 return 0;
7962 }
7963
cfg80211_off_channel_oper_allowed(struct wireless_dev * wdev)7964 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7965 {
7966 ASSERT_WDEV_LOCK(wdev);
7967
7968 if (!cfg80211_beaconing_iface_active(wdev))
7969 return true;
7970
7971 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7972 return true;
7973
7974 return regulatory_pre_cac_allowed(wdev->wiphy);
7975 }
7976
nl80211_check_scan_feat(struct wiphy * wiphy,u32 flags,u32 flag,enum nl80211_ext_feature_index feat)7977 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7978 enum nl80211_ext_feature_index feat)
7979 {
7980 if (!(flags & flag))
7981 return true;
7982 if (wiphy_ext_feature_isset(wiphy, feat))
7983 return true;
7984 return false;
7985 }
7986
7987 static int
nl80211_check_scan_flags(struct wiphy * wiphy,struct wireless_dev * wdev,void * request,struct nlattr ** attrs,bool is_sched_scan)7988 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7989 void *request, struct nlattr **attrs,
7990 bool is_sched_scan)
7991 {
7992 u8 *mac_addr, *mac_addr_mask;
7993 u32 *flags;
7994 enum nl80211_feature_flags randomness_flag;
7995
7996 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7997 return 0;
7998
7999 if (is_sched_scan) {
8000 struct cfg80211_sched_scan_request *req = request;
8001
8002 randomness_flag = wdev ?
8003 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8004 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8005 flags = &req->flags;
8006 mac_addr = req->mac_addr;
8007 mac_addr_mask = req->mac_addr_mask;
8008 } else {
8009 struct cfg80211_scan_request *req = request;
8010
8011 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8012 flags = &req->flags;
8013 mac_addr = req->mac_addr;
8014 mac_addr_mask = req->mac_addr_mask;
8015 }
8016
8017 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8018
8019 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8020 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8021 !nl80211_check_scan_feat(wiphy, *flags,
8022 NL80211_SCAN_FLAG_LOW_SPAN,
8023 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8024 !nl80211_check_scan_feat(wiphy, *flags,
8025 NL80211_SCAN_FLAG_LOW_POWER,
8026 NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8027 !nl80211_check_scan_feat(wiphy, *flags,
8028 NL80211_SCAN_FLAG_HIGH_ACCURACY,
8029 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8030 !nl80211_check_scan_feat(wiphy, *flags,
8031 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8032 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8033 !nl80211_check_scan_feat(wiphy, *flags,
8034 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8035 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8036 !nl80211_check_scan_feat(wiphy, *flags,
8037 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8038 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8039 !nl80211_check_scan_feat(wiphy, *flags,
8040 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8041 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8042 !nl80211_check_scan_feat(wiphy, *flags,
8043 NL80211_SCAN_FLAG_RANDOM_SN,
8044 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8045 !nl80211_check_scan_feat(wiphy, *flags,
8046 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8047 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8048 return -EOPNOTSUPP;
8049
8050 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8051 int err;
8052
8053 if (!(wiphy->features & randomness_flag) ||
8054 (wdev && wdev->current_bss))
8055 return -EOPNOTSUPP;
8056
8057 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8058 if (err)
8059 return err;
8060 }
8061
8062 return 0;
8063 }
8064
nl80211_trigger_scan(struct sk_buff * skb,struct genl_info * info)8065 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8066 {
8067 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8068 struct wireless_dev *wdev = info->user_ptr[1];
8069 struct cfg80211_scan_request *request;
8070 struct nlattr *scan_freqs = NULL;
8071 bool scan_freqs_khz = false;
8072 struct nlattr *attr;
8073 struct wiphy *wiphy;
8074 int err, tmp, n_ssids = 0, n_channels, i;
8075 size_t ie_len;
8076
8077 wiphy = &rdev->wiphy;
8078
8079 if (wdev->iftype == NL80211_IFTYPE_NAN)
8080 return -EOPNOTSUPP;
8081
8082 if (!rdev->ops->scan)
8083 return -EOPNOTSUPP;
8084
8085 if (rdev->scan_req || rdev->scan_msg)
8086 return -EBUSY;
8087
8088 if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8089 if (!wiphy_ext_feature_isset(wiphy,
8090 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8091 return -EOPNOTSUPP;
8092 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8093 scan_freqs_khz = true;
8094 } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8095 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8096
8097 if (scan_freqs) {
8098 n_channels = validate_scan_freqs(scan_freqs);
8099 if (!n_channels)
8100 return -EINVAL;
8101 } else {
8102 n_channels = ieee80211_get_num_supported_channels(wiphy);
8103 }
8104
8105 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8106 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8107 n_ssids++;
8108
8109 if (n_ssids > wiphy->max_scan_ssids)
8110 return -EINVAL;
8111
8112 if (info->attrs[NL80211_ATTR_IE])
8113 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8114 else
8115 ie_len = 0;
8116
8117 if (ie_len > wiphy->max_scan_ie_len)
8118 return -EINVAL;
8119
8120 request = kzalloc(sizeof(*request)
8121 + sizeof(*request->ssids) * n_ssids
8122 + sizeof(*request->channels) * n_channels
8123 + ie_len, GFP_KERNEL);
8124 if (!request)
8125 return -ENOMEM;
8126
8127 if (n_ssids)
8128 request->ssids = (void *)&request->channels[n_channels];
8129 request->n_ssids = n_ssids;
8130 if (ie_len) {
8131 if (n_ssids)
8132 request->ie = (void *)(request->ssids + n_ssids);
8133 else
8134 request->ie = (void *)(request->channels + n_channels);
8135 }
8136
8137 i = 0;
8138 if (scan_freqs) {
8139 /* user specified, bail out if channel not found */
8140 nla_for_each_nested(attr, scan_freqs, tmp) {
8141 struct ieee80211_channel *chan;
8142 int freq = nla_get_u32(attr);
8143
8144 if (!scan_freqs_khz)
8145 freq = MHZ_TO_KHZ(freq);
8146
8147 chan = ieee80211_get_channel_khz(wiphy, freq);
8148 if (!chan) {
8149 err = -EINVAL;
8150 goto out_free;
8151 }
8152
8153 /* ignore disabled channels */
8154 if (chan->flags & IEEE80211_CHAN_DISABLED)
8155 continue;
8156
8157 request->channels[i] = chan;
8158 i++;
8159 }
8160 } else {
8161 enum nl80211_band band;
8162
8163 /* all channels */
8164 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8165 int j;
8166
8167 if (!wiphy->bands[band])
8168 continue;
8169 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8170 struct ieee80211_channel *chan;
8171
8172 chan = &wiphy->bands[band]->channels[j];
8173
8174 if (chan->flags & IEEE80211_CHAN_DISABLED)
8175 continue;
8176
8177 request->channels[i] = chan;
8178 i++;
8179 }
8180 }
8181 }
8182
8183 if (!i) {
8184 err = -EINVAL;
8185 goto out_free;
8186 }
8187
8188 request->n_channels = i;
8189
8190 wdev_lock(wdev);
8191 if (!cfg80211_off_channel_oper_allowed(wdev)) {
8192 struct ieee80211_channel *chan;
8193
8194 if (request->n_channels != 1) {
8195 wdev_unlock(wdev);
8196 err = -EBUSY;
8197 goto out_free;
8198 }
8199
8200 chan = request->channels[0];
8201 if (chan->center_freq != wdev->chandef.chan->center_freq) {
8202 wdev_unlock(wdev);
8203 err = -EBUSY;
8204 goto out_free;
8205 }
8206 }
8207 wdev_unlock(wdev);
8208
8209 i = 0;
8210 if (n_ssids) {
8211 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8212 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8213 err = -EINVAL;
8214 goto out_free;
8215 }
8216 request->ssids[i].ssid_len = nla_len(attr);
8217 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8218 i++;
8219 }
8220 }
8221
8222 if (info->attrs[NL80211_ATTR_IE]) {
8223 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8224 memcpy((void *)request->ie,
8225 nla_data(info->attrs[NL80211_ATTR_IE]),
8226 request->ie_len);
8227 }
8228
8229 for (i = 0; i < NUM_NL80211_BANDS; i++)
8230 if (wiphy->bands[i])
8231 request->rates[i] =
8232 (1 << wiphy->bands[i]->n_bitrates) - 1;
8233
8234 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8235 nla_for_each_nested(attr,
8236 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8237 tmp) {
8238 enum nl80211_band band = nla_type(attr);
8239
8240 if (band < 0 || band >= NUM_NL80211_BANDS) {
8241 err = -EINVAL;
8242 goto out_free;
8243 }
8244
8245 if (!wiphy->bands[band])
8246 continue;
8247
8248 err = ieee80211_get_ratemask(wiphy->bands[band],
8249 nla_data(attr),
8250 nla_len(attr),
8251 &request->rates[band]);
8252 if (err)
8253 goto out_free;
8254 }
8255 }
8256
8257 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
8258 if (!wiphy_ext_feature_isset(wiphy,
8259 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
8260 err = -EOPNOTSUPP;
8261 goto out_free;
8262 }
8263
8264 request->duration =
8265 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
8266 request->duration_mandatory =
8267 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
8268 }
8269
8270 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
8271 false);
8272 if (err)
8273 goto out_free;
8274
8275 request->no_cck =
8276 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8277
8278 /* Initial implementation used NL80211_ATTR_MAC to set the specific
8279 * BSSID to scan for. This was problematic because that same attribute
8280 * was already used for another purpose (local random MAC address). The
8281 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
8282 * compatibility with older userspace components, also use the
8283 * NL80211_ATTR_MAC value here if it can be determined to be used for
8284 * the specific BSSID use case instead of the random MAC address
8285 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
8286 */
8287 if (info->attrs[NL80211_ATTR_BSSID])
8288 memcpy(request->bssid,
8289 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
8290 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
8291 info->attrs[NL80211_ATTR_MAC])
8292 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8293 ETH_ALEN);
8294 else
8295 eth_broadcast_addr(request->bssid);
8296
8297 request->wdev = wdev;
8298 request->wiphy = &rdev->wiphy;
8299 request->scan_start = jiffies;
8300
8301 rdev->scan_req = request;
8302 err = cfg80211_scan(rdev);
8303
8304 if (err)
8305 goto out_free;
8306
8307 nl80211_send_scan_start(rdev, wdev);
8308 if (wdev->netdev)
8309 dev_hold(wdev->netdev);
8310
8311 return 0;
8312
8313 out_free:
8314 rdev->scan_req = NULL;
8315 kfree(request);
8316
8317 return err;
8318 }
8319
nl80211_abort_scan(struct sk_buff * skb,struct genl_info * info)8320 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8321 {
8322 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8323 struct wireless_dev *wdev = info->user_ptr[1];
8324
8325 if (!rdev->ops->abort_scan)
8326 return -EOPNOTSUPP;
8327
8328 if (rdev->scan_msg)
8329 return 0;
8330
8331 if (!rdev->scan_req)
8332 return -ENOENT;
8333
8334 rdev_abort_scan(rdev, wdev);
8335 return 0;
8336 }
8337
8338 static int
nl80211_parse_sched_scan_plans(struct wiphy * wiphy,int n_plans,struct cfg80211_sched_scan_request * request,struct nlattr ** attrs)8339 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8340 struct cfg80211_sched_scan_request *request,
8341 struct nlattr **attrs)
8342 {
8343 int tmp, err, i = 0;
8344 struct nlattr *attr;
8345
8346 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8347 u32 interval;
8348
8349 /*
8350 * If scan plans are not specified,
8351 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8352 * case one scan plan will be set with the specified scan
8353 * interval and infinite number of iterations.
8354 */
8355 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8356 if (!interval)
8357 return -EINVAL;
8358
8359 request->scan_plans[0].interval =
8360 DIV_ROUND_UP(interval, MSEC_PER_SEC);
8361 if (!request->scan_plans[0].interval)
8362 return -EINVAL;
8363
8364 if (request->scan_plans[0].interval >
8365 wiphy->max_sched_scan_plan_interval)
8366 request->scan_plans[0].interval =
8367 wiphy->max_sched_scan_plan_interval;
8368
8369 return 0;
8370 }
8371
8372 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8373 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8374
8375 if (WARN_ON(i >= n_plans))
8376 return -EINVAL;
8377
8378 err = nla_parse_nested_deprecated(plan,
8379 NL80211_SCHED_SCAN_PLAN_MAX,
8380 attr, nl80211_plan_policy,
8381 NULL);
8382 if (err)
8383 return err;
8384
8385 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8386 return -EINVAL;
8387
8388 request->scan_plans[i].interval =
8389 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8390 if (!request->scan_plans[i].interval ||
8391 request->scan_plans[i].interval >
8392 wiphy->max_sched_scan_plan_interval)
8393 return -EINVAL;
8394
8395 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8396 request->scan_plans[i].iterations =
8397 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8398 if (!request->scan_plans[i].iterations ||
8399 (request->scan_plans[i].iterations >
8400 wiphy->max_sched_scan_plan_iterations))
8401 return -EINVAL;
8402 } else if (i < n_plans - 1) {
8403 /*
8404 * All scan plans but the last one must specify
8405 * a finite number of iterations
8406 */
8407 return -EINVAL;
8408 }
8409
8410 i++;
8411 }
8412
8413 /*
8414 * The last scan plan must not specify the number of
8415 * iterations, it is supposed to run infinitely
8416 */
8417 if (request->scan_plans[n_plans - 1].iterations)
8418 return -EINVAL;
8419
8420 return 0;
8421 }
8422
8423 static int
nl80211_parse_sched_scan_per_band_rssi(struct wiphy * wiphy,struct cfg80211_match_set * match_sets,struct nlattr * tb_band_rssi,s32 rssi_thold)8424 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8425 struct cfg80211_match_set *match_sets,
8426 struct nlattr *tb_band_rssi,
8427 s32 rssi_thold)
8428 {
8429 struct nlattr *attr;
8430 int i, tmp, ret = 0;
8431
8432 if (!wiphy_ext_feature_isset(wiphy,
8433 NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8434 if (tb_band_rssi)
8435 ret = -EOPNOTSUPP;
8436 else
8437 for (i = 0; i < NUM_NL80211_BANDS; i++)
8438 match_sets->per_band_rssi_thold[i] =
8439 NL80211_SCAN_RSSI_THOLD_OFF;
8440 return ret;
8441 }
8442
8443 for (i = 0; i < NUM_NL80211_BANDS; i++)
8444 match_sets->per_band_rssi_thold[i] = rssi_thold;
8445
8446 nla_for_each_nested(attr, tb_band_rssi, tmp) {
8447 enum nl80211_band band = nla_type(attr);
8448
8449 if (band < 0 || band >= NUM_NL80211_BANDS)
8450 return -EINVAL;
8451
8452 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8453 }
8454
8455 return 0;
8456 }
8457
8458 static struct cfg80211_sched_scan_request *
nl80211_parse_sched_scan(struct wiphy * wiphy,struct wireless_dev * wdev,struct nlattr ** attrs,int max_match_sets)8459 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8460 struct nlattr **attrs, int max_match_sets)
8461 {
8462 struct cfg80211_sched_scan_request *request;
8463 struct nlattr *attr;
8464 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8465 enum nl80211_band band;
8466 size_t ie_len;
8467 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8468 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8469
8470 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8471 n_channels = validate_scan_freqs(
8472 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8473 if (!n_channels)
8474 return ERR_PTR(-EINVAL);
8475 } else {
8476 n_channels = ieee80211_get_num_supported_channels(wiphy);
8477 }
8478
8479 if (attrs[NL80211_ATTR_SCAN_SSIDS])
8480 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8481 tmp)
8482 n_ssids++;
8483
8484 if (n_ssids > wiphy->max_sched_scan_ssids)
8485 return ERR_PTR(-EINVAL);
8486
8487 /*
8488 * First, count the number of 'real' matchsets. Due to an issue with
8489 * the old implementation, matchsets containing only the RSSI attribute
8490 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8491 * RSSI for all matchsets, rather than their own matchset for reporting
8492 * all APs with a strong RSSI. This is needed to be compatible with
8493 * older userspace that treated a matchset with only the RSSI as the
8494 * global RSSI for all other matchsets - if there are other matchsets.
8495 */
8496 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8497 nla_for_each_nested(attr,
8498 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8499 tmp) {
8500 struct nlattr *rssi;
8501
8502 err = nla_parse_nested_deprecated(tb,
8503 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8504 attr,
8505 nl80211_match_policy,
8506 NULL);
8507 if (err)
8508 return ERR_PTR(err);
8509
8510 /* SSID and BSSID are mutually exclusive */
8511 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8512 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8513 return ERR_PTR(-EINVAL);
8514
8515 /* add other standalone attributes here */
8516 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8517 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8518 n_match_sets++;
8519 continue;
8520 }
8521 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8522 if (rssi)
8523 default_match_rssi = nla_get_s32(rssi);
8524 }
8525 }
8526
8527 /* However, if there's no other matchset, add the RSSI one */
8528 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8529 n_match_sets = 1;
8530
8531 if (n_match_sets > max_match_sets)
8532 return ERR_PTR(-EINVAL);
8533
8534 if (attrs[NL80211_ATTR_IE])
8535 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8536 else
8537 ie_len = 0;
8538
8539 if (ie_len > wiphy->max_sched_scan_ie_len)
8540 return ERR_PTR(-EINVAL);
8541
8542 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8543 /*
8544 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8545 * each scan plan already specifies its own interval
8546 */
8547 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8548 return ERR_PTR(-EINVAL);
8549
8550 nla_for_each_nested(attr,
8551 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8552 n_plans++;
8553 } else {
8554 /*
8555 * The scan interval attribute is kept for backward
8556 * compatibility. If no scan plans are specified and sched scan
8557 * interval is specified, one scan plan will be set with this
8558 * scan interval and infinite number of iterations.
8559 */
8560 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8561 return ERR_PTR(-EINVAL);
8562
8563 n_plans = 1;
8564 }
8565
8566 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8567 return ERR_PTR(-EINVAL);
8568
8569 if (!wiphy_ext_feature_isset(
8570 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8571 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8572 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8573 return ERR_PTR(-EINVAL);
8574
8575 request = kzalloc(sizeof(*request)
8576 + sizeof(*request->ssids) * n_ssids
8577 + sizeof(*request->match_sets) * n_match_sets
8578 + sizeof(*request->scan_plans) * n_plans
8579 + sizeof(*request->channels) * n_channels
8580 + ie_len, GFP_KERNEL);
8581 if (!request)
8582 return ERR_PTR(-ENOMEM);
8583
8584 if (n_ssids)
8585 request->ssids = (void *)&request->channels[n_channels];
8586 request->n_ssids = n_ssids;
8587 if (ie_len) {
8588 if (n_ssids)
8589 request->ie = (void *)(request->ssids + n_ssids);
8590 else
8591 request->ie = (void *)(request->channels + n_channels);
8592 }
8593
8594 if (n_match_sets) {
8595 if (request->ie)
8596 request->match_sets = (void *)(request->ie + ie_len);
8597 else if (n_ssids)
8598 request->match_sets =
8599 (void *)(request->ssids + n_ssids);
8600 else
8601 request->match_sets =
8602 (void *)(request->channels + n_channels);
8603 }
8604 request->n_match_sets = n_match_sets;
8605
8606 if (n_match_sets)
8607 request->scan_plans = (void *)(request->match_sets +
8608 n_match_sets);
8609 else if (request->ie)
8610 request->scan_plans = (void *)(request->ie + ie_len);
8611 else if (n_ssids)
8612 request->scan_plans = (void *)(request->ssids + n_ssids);
8613 else
8614 request->scan_plans = (void *)(request->channels + n_channels);
8615
8616 request->n_scan_plans = n_plans;
8617
8618 i = 0;
8619 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8620 /* user specified, bail out if channel not found */
8621 nla_for_each_nested(attr,
8622 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8623 tmp) {
8624 struct ieee80211_channel *chan;
8625
8626 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8627
8628 if (!chan) {
8629 err = -EINVAL;
8630 goto out_free;
8631 }
8632
8633 /* ignore disabled channels */
8634 if (chan->flags & IEEE80211_CHAN_DISABLED)
8635 continue;
8636
8637 request->channels[i] = chan;
8638 i++;
8639 }
8640 } else {
8641 /* all channels */
8642 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8643 int j;
8644
8645 if (!wiphy->bands[band])
8646 continue;
8647 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8648 struct ieee80211_channel *chan;
8649
8650 chan = &wiphy->bands[band]->channels[j];
8651
8652 if (chan->flags & IEEE80211_CHAN_DISABLED)
8653 continue;
8654
8655 request->channels[i] = chan;
8656 i++;
8657 }
8658 }
8659 }
8660
8661 if (!i) {
8662 err = -EINVAL;
8663 goto out_free;
8664 }
8665
8666 request->n_channels = i;
8667
8668 i = 0;
8669 if (n_ssids) {
8670 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8671 tmp) {
8672 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8673 err = -EINVAL;
8674 goto out_free;
8675 }
8676 request->ssids[i].ssid_len = nla_len(attr);
8677 memcpy(request->ssids[i].ssid, nla_data(attr),
8678 nla_len(attr));
8679 i++;
8680 }
8681 }
8682
8683 i = 0;
8684 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8685 nla_for_each_nested(attr,
8686 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8687 tmp) {
8688 struct nlattr *ssid, *bssid, *rssi;
8689
8690 err = nla_parse_nested_deprecated(tb,
8691 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8692 attr,
8693 nl80211_match_policy,
8694 NULL);
8695 if (err)
8696 goto out_free;
8697 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8698 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8699
8700 if (!ssid && !bssid) {
8701 i++;
8702 continue;
8703 }
8704
8705 if (WARN_ON(i >= n_match_sets)) {
8706 /* this indicates a programming error,
8707 * the loop above should have verified
8708 * things properly
8709 */
8710 err = -EINVAL;
8711 goto out_free;
8712 }
8713
8714 if (ssid) {
8715 memcpy(request->match_sets[i].ssid.ssid,
8716 nla_data(ssid), nla_len(ssid));
8717 request->match_sets[i].ssid.ssid_len =
8718 nla_len(ssid);
8719 }
8720 if (bssid)
8721 memcpy(request->match_sets[i].bssid,
8722 nla_data(bssid), ETH_ALEN);
8723
8724 /* special attribute - old implementation w/a */
8725 request->match_sets[i].rssi_thold = default_match_rssi;
8726 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8727 if (rssi)
8728 request->match_sets[i].rssi_thold =
8729 nla_get_s32(rssi);
8730
8731 /* Parse per band RSSI attribute */
8732 err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8733 &request->match_sets[i],
8734 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8735 request->match_sets[i].rssi_thold);
8736 if (err)
8737 goto out_free;
8738
8739 i++;
8740 }
8741
8742 /* there was no other matchset, so the RSSI one is alone */
8743 if (i == 0 && n_match_sets)
8744 request->match_sets[0].rssi_thold = default_match_rssi;
8745
8746 request->min_rssi_thold = INT_MAX;
8747 for (i = 0; i < n_match_sets; i++)
8748 request->min_rssi_thold =
8749 min(request->match_sets[i].rssi_thold,
8750 request->min_rssi_thold);
8751 } else {
8752 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8753 }
8754
8755 if (ie_len) {
8756 request->ie_len = ie_len;
8757 memcpy((void *)request->ie,
8758 nla_data(attrs[NL80211_ATTR_IE]),
8759 request->ie_len);
8760 }
8761
8762 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8763 if (err)
8764 goto out_free;
8765
8766 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8767 request->delay =
8768 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8769
8770 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8771 request->relative_rssi = nla_get_s8(
8772 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8773 request->relative_rssi_set = true;
8774 }
8775
8776 if (request->relative_rssi_set &&
8777 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8778 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8779
8780 rssi_adjust = nla_data(
8781 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8782 request->rssi_adjust.band = rssi_adjust->band;
8783 request->rssi_adjust.delta = rssi_adjust->delta;
8784 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8785 err = -EINVAL;
8786 goto out_free;
8787 }
8788 }
8789
8790 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8791 if (err)
8792 goto out_free;
8793
8794 request->scan_start = jiffies;
8795
8796 return request;
8797
8798 out_free:
8799 kfree(request);
8800 return ERR_PTR(err);
8801 }
8802
nl80211_start_sched_scan(struct sk_buff * skb,struct genl_info * info)8803 static int nl80211_start_sched_scan(struct sk_buff *skb,
8804 struct genl_info *info)
8805 {
8806 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8807 struct net_device *dev = info->user_ptr[1];
8808 struct wireless_dev *wdev = dev->ieee80211_ptr;
8809 struct cfg80211_sched_scan_request *sched_scan_req;
8810 bool want_multi;
8811 int err;
8812
8813 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8814 return -EOPNOTSUPP;
8815
8816 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8817 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8818 if (err)
8819 return err;
8820
8821 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8822 info->attrs,
8823 rdev->wiphy.max_match_sets);
8824
8825 err = PTR_ERR_OR_ZERO(sched_scan_req);
8826 if (err)
8827 goto out_err;
8828
8829 /* leave request id zero for legacy request
8830 * or if driver does not support multi-scheduled scan
8831 */
8832 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8833 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8834
8835 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8836 if (err)
8837 goto out_free;
8838
8839 sched_scan_req->dev = dev;
8840 sched_scan_req->wiphy = &rdev->wiphy;
8841
8842 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8843 sched_scan_req->owner_nlportid = info->snd_portid;
8844
8845 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8846
8847 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8848 return 0;
8849
8850 out_free:
8851 kfree(sched_scan_req);
8852 out_err:
8853 return err;
8854 }
8855
nl80211_stop_sched_scan(struct sk_buff * skb,struct genl_info * info)8856 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8857 struct genl_info *info)
8858 {
8859 struct cfg80211_sched_scan_request *req;
8860 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8861 u64 cookie;
8862
8863 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8864 return -EOPNOTSUPP;
8865
8866 if (info->attrs[NL80211_ATTR_COOKIE]) {
8867 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8868 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8869 }
8870
8871 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8872 struct cfg80211_sched_scan_request,
8873 list);
8874 if (!req || req->reqid ||
8875 (req->owner_nlportid &&
8876 req->owner_nlportid != info->snd_portid))
8877 return -ENOENT;
8878
8879 return cfg80211_stop_sched_scan_req(rdev, req, false);
8880 }
8881
nl80211_start_radar_detection(struct sk_buff * skb,struct genl_info * info)8882 static int nl80211_start_radar_detection(struct sk_buff *skb,
8883 struct genl_info *info)
8884 {
8885 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8886 struct net_device *dev = info->user_ptr[1];
8887 struct wireless_dev *wdev = dev->ieee80211_ptr;
8888 struct wiphy *wiphy = wdev->wiphy;
8889 struct cfg80211_chan_def chandef;
8890 enum nl80211_dfs_regions dfs_region;
8891 unsigned int cac_time_ms;
8892 int err;
8893
8894 dfs_region = reg_get_dfs_region(wiphy);
8895 if (dfs_region == NL80211_DFS_UNSET)
8896 return -EINVAL;
8897
8898 err = nl80211_parse_chandef(rdev, info, &chandef);
8899 if (err)
8900 return err;
8901
8902 if (netif_carrier_ok(dev))
8903 return -EBUSY;
8904
8905 if (wdev->cac_started)
8906 return -EBUSY;
8907
8908 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8909 if (err < 0)
8910 return err;
8911
8912 if (err == 0)
8913 return -EINVAL;
8914
8915 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8916 return -EINVAL;
8917
8918 /* CAC start is offloaded to HW and can't be started manually */
8919 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8920 return -EOPNOTSUPP;
8921
8922 if (!rdev->ops->start_radar_detection)
8923 return -EOPNOTSUPP;
8924
8925 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8926 if (WARN_ON(!cac_time_ms))
8927 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8928
8929 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8930 if (!err) {
8931 wdev->chandef = chandef;
8932 wdev->cac_started = true;
8933 wdev->cac_start_time = jiffies;
8934 wdev->cac_time_ms = cac_time_ms;
8935 }
8936 return err;
8937 }
8938
nl80211_notify_radar_detection(struct sk_buff * skb,struct genl_info * info)8939 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8940 struct genl_info *info)
8941 {
8942 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8943 struct net_device *dev = info->user_ptr[1];
8944 struct wireless_dev *wdev = dev->ieee80211_ptr;
8945 struct wiphy *wiphy = wdev->wiphy;
8946 struct cfg80211_chan_def chandef;
8947 enum nl80211_dfs_regions dfs_region;
8948 int err;
8949
8950 dfs_region = reg_get_dfs_region(wiphy);
8951 if (dfs_region == NL80211_DFS_UNSET) {
8952 GENL_SET_ERR_MSG(info,
8953 "DFS Region is not set. Unexpected Radar indication");
8954 return -EINVAL;
8955 }
8956
8957 err = nl80211_parse_chandef(rdev, info, &chandef);
8958 if (err) {
8959 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8960 return err;
8961 }
8962
8963 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8964 if (err < 0) {
8965 GENL_SET_ERR_MSG(info, "chandef is invalid");
8966 return err;
8967 }
8968
8969 if (err == 0) {
8970 GENL_SET_ERR_MSG(info,
8971 "Unexpected Radar indication for chandef/iftype");
8972 return -EINVAL;
8973 }
8974
8975 /* Do not process this notification if radar is already detected
8976 * by kernel on this channel, and return success.
8977 */
8978 if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8979 return 0;
8980
8981 cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8982
8983 cfg80211_sched_dfs_chan_update(rdev);
8984
8985 rdev->radar_chandef = chandef;
8986
8987 /* Propagate this notification to other radios as well */
8988 queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8989
8990 return 0;
8991 }
8992
nl80211_channel_switch(struct sk_buff * skb,struct genl_info * info)8993 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8994 {
8995 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8996 struct net_device *dev = info->user_ptr[1];
8997 struct wireless_dev *wdev = dev->ieee80211_ptr;
8998 struct cfg80211_csa_settings params;
8999 /* csa_attrs is defined static to avoid waste of stack size - this
9000 * function is called under RTNL lock, so this should not be a problem.
9001 */
9002 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
9003 int err;
9004 bool need_new_beacon = false;
9005 bool need_handle_dfs_flag = true;
9006 int len, i;
9007 u32 cs_count;
9008
9009 if (!rdev->ops->channel_switch ||
9010 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9011 return -EOPNOTSUPP;
9012
9013 switch (dev->ieee80211_ptr->iftype) {
9014 case NL80211_IFTYPE_AP:
9015 case NL80211_IFTYPE_P2P_GO:
9016 need_new_beacon = true;
9017 /* For all modes except AP the handle_dfs flag needs to be
9018 * supplied to tell the kernel that userspace will handle radar
9019 * events when they happen. Otherwise a switch to a channel
9020 * requiring DFS will be rejected.
9021 */
9022 need_handle_dfs_flag = false;
9023
9024 /* useless if AP is not running */
9025 if (!wdev->beacon_interval)
9026 return -ENOTCONN;
9027 break;
9028 case NL80211_IFTYPE_ADHOC:
9029 if (!wdev->ssid_len)
9030 return -ENOTCONN;
9031 break;
9032 case NL80211_IFTYPE_MESH_POINT:
9033 if (!wdev->mesh_id_len)
9034 return -ENOTCONN;
9035 break;
9036 default:
9037 return -EOPNOTSUPP;
9038 }
9039
9040 memset(¶ms, 0, sizeof(params));
9041 params.beacon_csa.ftm_responder = -1;
9042
9043 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9044 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9045 return -EINVAL;
9046
9047 /* only important for AP, IBSS and mesh create IEs internally */
9048 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9049 return -EINVAL;
9050
9051 /* Even though the attribute is u32, the specification says
9052 * u8, so let's make sure we don't overflow.
9053 */
9054 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9055 if (cs_count > 255)
9056 return -EINVAL;
9057
9058 params.count = cs_count;
9059
9060 if (!need_new_beacon)
9061 goto skip_beacons;
9062
9063 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_after);
9064 if (err)
9065 return err;
9066
9067 err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9068 info->attrs[NL80211_ATTR_CSA_IES],
9069 nl80211_policy, info->extack);
9070 if (err)
9071 return err;
9072
9073 err = nl80211_parse_beacon(rdev, csa_attrs, ¶ms.beacon_csa);
9074 if (err)
9075 return err;
9076
9077 if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON])
9078 return -EINVAL;
9079
9080 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9081 if (!len || (len % sizeof(u16)))
9082 return -EINVAL;
9083
9084 params.n_counter_offsets_beacon = len / sizeof(u16);
9085 if (rdev->wiphy.max_num_csa_counters &&
9086 (params.n_counter_offsets_beacon >
9087 rdev->wiphy.max_num_csa_counters))
9088 return -EINVAL;
9089
9090 params.counter_offsets_beacon =
9091 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9092
9093 /* sanity checks - counters should fit and be the same */
9094 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9095 u16 offset = params.counter_offsets_beacon[i];
9096
9097 if (offset >= params.beacon_csa.tail_len)
9098 return -EINVAL;
9099
9100 if (params.beacon_csa.tail[offset] != params.count)
9101 return -EINVAL;
9102 }
9103
9104 if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9105 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9106 if (!len || (len % sizeof(u16)))
9107 return -EINVAL;
9108
9109 params.n_counter_offsets_presp = len / sizeof(u16);
9110 if (rdev->wiphy.max_num_csa_counters &&
9111 (params.n_counter_offsets_presp >
9112 rdev->wiphy.max_num_csa_counters))
9113 return -EINVAL;
9114
9115 params.counter_offsets_presp =
9116 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9117
9118 /* sanity checks - counters should fit and be the same */
9119 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9120 u16 offset = params.counter_offsets_presp[i];
9121
9122 if (offset >= params.beacon_csa.probe_resp_len)
9123 return -EINVAL;
9124
9125 if (params.beacon_csa.probe_resp[offset] !=
9126 params.count)
9127 return -EINVAL;
9128 }
9129 }
9130
9131 skip_beacons:
9132 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef);
9133 if (err)
9134 return err;
9135
9136 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef,
9137 wdev->iftype))
9138 return -EINVAL;
9139
9140 err = cfg80211_chandef_dfs_required(wdev->wiphy,
9141 ¶ms.chandef,
9142 wdev->iftype);
9143 if (err < 0)
9144 return err;
9145
9146 if (err > 0) {
9147 params.radar_required = true;
9148 if (need_handle_dfs_flag &&
9149 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9150 return -EINVAL;
9151 }
9152 }
9153
9154 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9155 params.block_tx = true;
9156
9157 wdev_lock(wdev);
9158 err = rdev_channel_switch(rdev, dev, ¶ms);
9159 wdev_unlock(wdev);
9160
9161 return err;
9162 }
9163
nl80211_send_bss(struct sk_buff * msg,struct netlink_callback * cb,u32 seq,int flags,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,struct cfg80211_internal_bss * intbss)9164 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9165 u32 seq, int flags,
9166 struct cfg80211_registered_device *rdev,
9167 struct wireless_dev *wdev,
9168 struct cfg80211_internal_bss *intbss)
9169 {
9170 struct cfg80211_bss *res = &intbss->pub;
9171 const struct cfg80211_bss_ies *ies;
9172 void *hdr;
9173 struct nlattr *bss;
9174
9175 ASSERT_WDEV_LOCK(wdev);
9176
9177 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9178 NL80211_CMD_NEW_SCAN_RESULTS);
9179 if (!hdr)
9180 return -1;
9181
9182 genl_dump_check_consistent(cb, hdr);
9183
9184 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9185 goto nla_put_failure;
9186 if (wdev->netdev &&
9187 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9188 goto nla_put_failure;
9189 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9190 NL80211_ATTR_PAD))
9191 goto nla_put_failure;
9192
9193 bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
9194 if (!bss)
9195 goto nla_put_failure;
9196 if ((!is_zero_ether_addr(res->bssid) &&
9197 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
9198 goto nla_put_failure;
9199
9200 rcu_read_lock();
9201 /* indicate whether we have probe response data or not */
9202 if (rcu_access_pointer(res->proberesp_ies) &&
9203 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
9204 goto fail_unlock_rcu;
9205
9206 /* this pointer prefers to be pointed to probe response data
9207 * but is always valid
9208 */
9209 ies = rcu_dereference(res->ies);
9210 if (ies) {
9211 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
9212 NL80211_BSS_PAD))
9213 goto fail_unlock_rcu;
9214 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
9215 ies->len, ies->data))
9216 goto fail_unlock_rcu;
9217 }
9218
9219 /* and this pointer is always (unless driver didn't know) beacon data */
9220 ies = rcu_dereference(res->beacon_ies);
9221 if (ies && ies->from_beacon) {
9222 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
9223 NL80211_BSS_PAD))
9224 goto fail_unlock_rcu;
9225 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
9226 ies->len, ies->data))
9227 goto fail_unlock_rcu;
9228 }
9229 rcu_read_unlock();
9230
9231 if (res->beacon_interval &&
9232 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
9233 goto nla_put_failure;
9234 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
9235 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
9236 nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
9237 res->channel->freq_offset) ||
9238 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
9239 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
9240 jiffies_to_msecs(jiffies - intbss->ts)))
9241 goto nla_put_failure;
9242
9243 if (intbss->parent_tsf &&
9244 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
9245 intbss->parent_tsf, NL80211_BSS_PAD) ||
9246 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
9247 intbss->parent_bssid)))
9248 goto nla_put_failure;
9249
9250 if (intbss->ts_boottime &&
9251 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
9252 intbss->ts_boottime, NL80211_BSS_PAD))
9253 goto nla_put_failure;
9254
9255 if (!nl80211_put_signal(msg, intbss->pub.chains,
9256 intbss->pub.chain_signal,
9257 NL80211_BSS_CHAIN_SIGNAL))
9258 goto nla_put_failure;
9259
9260 switch (rdev->wiphy.signal_type) {
9261 case CFG80211_SIGNAL_TYPE_MBM:
9262 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
9263 goto nla_put_failure;
9264 break;
9265 case CFG80211_SIGNAL_TYPE_UNSPEC:
9266 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
9267 goto nla_put_failure;
9268 break;
9269 default:
9270 break;
9271 }
9272
9273 switch (wdev->iftype) {
9274 case NL80211_IFTYPE_P2P_CLIENT:
9275 case NL80211_IFTYPE_STATION:
9276 if (intbss == wdev->current_bss &&
9277 nla_put_u32(msg, NL80211_BSS_STATUS,
9278 NL80211_BSS_STATUS_ASSOCIATED))
9279 goto nla_put_failure;
9280 break;
9281 case NL80211_IFTYPE_ADHOC:
9282 if (intbss == wdev->current_bss &&
9283 nla_put_u32(msg, NL80211_BSS_STATUS,
9284 NL80211_BSS_STATUS_IBSS_JOINED))
9285 goto nla_put_failure;
9286 break;
9287 default:
9288 break;
9289 }
9290
9291 nla_nest_end(msg, bss);
9292
9293 genlmsg_end(msg, hdr);
9294 return 0;
9295
9296 fail_unlock_rcu:
9297 rcu_read_unlock();
9298 nla_put_failure:
9299 genlmsg_cancel(msg, hdr);
9300 return -EMSGSIZE;
9301 }
9302
nl80211_dump_scan(struct sk_buff * skb,struct netlink_callback * cb)9303 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9304 {
9305 struct cfg80211_registered_device *rdev;
9306 struct cfg80211_internal_bss *scan;
9307 struct wireless_dev *wdev;
9308 int start = cb->args[2], idx = 0;
9309 int err;
9310
9311 rtnl_lock();
9312 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9313 if (err) {
9314 rtnl_unlock();
9315 return err;
9316 }
9317
9318 wdev_lock(wdev);
9319 spin_lock_bh(&rdev->bss_lock);
9320
9321 /*
9322 * dump_scan will be called multiple times to break up the scan results
9323 * into multiple messages. It is unlikely that any more bss-es will be
9324 * expired after the first call, so only call only call this on the
9325 * first dump_scan invocation.
9326 */
9327 if (start == 0)
9328 cfg80211_bss_expire(rdev);
9329
9330 cb->seq = rdev->bss_generation;
9331
9332 list_for_each_entry(scan, &rdev->bss_list, list) {
9333 if (++idx <= start)
9334 continue;
9335 if (nl80211_send_bss(skb, cb,
9336 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9337 rdev, wdev, scan) < 0) {
9338 idx--;
9339 break;
9340 }
9341 }
9342
9343 spin_unlock_bh(&rdev->bss_lock);
9344 wdev_unlock(wdev);
9345
9346 cb->args[2] = idx;
9347 rtnl_unlock();
9348
9349 return skb->len;
9350 }
9351
nl80211_send_survey(struct sk_buff * msg,u32 portid,u32 seq,int flags,struct net_device * dev,bool allow_radio_stats,struct survey_info * survey)9352 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9353 int flags, struct net_device *dev,
9354 bool allow_radio_stats,
9355 struct survey_info *survey)
9356 {
9357 void *hdr;
9358 struct nlattr *infoattr;
9359
9360 /* skip radio stats if userspace didn't request them */
9361 if (!survey->channel && !allow_radio_stats)
9362 return 0;
9363
9364 hdr = nl80211hdr_put(msg, portid, seq, flags,
9365 NL80211_CMD_NEW_SURVEY_RESULTS);
9366 if (!hdr)
9367 return -ENOMEM;
9368
9369 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9370 goto nla_put_failure;
9371
9372 infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9373 if (!infoattr)
9374 goto nla_put_failure;
9375
9376 if (survey->channel &&
9377 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9378 survey->channel->center_freq))
9379 goto nla_put_failure;
9380
9381 if (survey->channel && survey->channel->freq_offset &&
9382 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
9383 survey->channel->freq_offset))
9384 goto nla_put_failure;
9385
9386 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9387 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9388 goto nla_put_failure;
9389 if ((survey->filled & SURVEY_INFO_IN_USE) &&
9390 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9391 goto nla_put_failure;
9392 if ((survey->filled & SURVEY_INFO_TIME) &&
9393 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9394 survey->time, NL80211_SURVEY_INFO_PAD))
9395 goto nla_put_failure;
9396 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9397 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9398 survey->time_busy, NL80211_SURVEY_INFO_PAD))
9399 goto nla_put_failure;
9400 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9401 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9402 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9403 goto nla_put_failure;
9404 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9405 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9406 survey->time_rx, NL80211_SURVEY_INFO_PAD))
9407 goto nla_put_failure;
9408 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9409 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9410 survey->time_tx, NL80211_SURVEY_INFO_PAD))
9411 goto nla_put_failure;
9412 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9413 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9414 survey->time_scan, NL80211_SURVEY_INFO_PAD))
9415 goto nla_put_failure;
9416 if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9417 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9418 survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9419 goto nla_put_failure;
9420
9421 nla_nest_end(msg, infoattr);
9422
9423 genlmsg_end(msg, hdr);
9424 return 0;
9425
9426 nla_put_failure:
9427 genlmsg_cancel(msg, hdr);
9428 return -EMSGSIZE;
9429 }
9430
nl80211_dump_survey(struct sk_buff * skb,struct netlink_callback * cb)9431 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9432 {
9433 struct nlattr **attrbuf;
9434 struct survey_info survey;
9435 struct cfg80211_registered_device *rdev;
9436 struct wireless_dev *wdev;
9437 int survey_idx = cb->args[2];
9438 int res;
9439 bool radio_stats;
9440
9441 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9442 if (!attrbuf)
9443 return -ENOMEM;
9444
9445 rtnl_lock();
9446 res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9447 if (res)
9448 goto out_err;
9449
9450 /* prepare_wdev_dump parsed the attributes */
9451 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9452
9453 if (!wdev->netdev) {
9454 res = -EINVAL;
9455 goto out_err;
9456 }
9457
9458 if (!rdev->ops->dump_survey) {
9459 res = -EOPNOTSUPP;
9460 goto out_err;
9461 }
9462
9463 while (1) {
9464 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9465 if (res == -ENOENT)
9466 break;
9467 if (res)
9468 goto out_err;
9469
9470 /* don't send disabled channels, but do send non-channel data */
9471 if (survey.channel &&
9472 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9473 survey_idx++;
9474 continue;
9475 }
9476
9477 if (nl80211_send_survey(skb,
9478 NETLINK_CB(cb->skb).portid,
9479 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9480 wdev->netdev, radio_stats, &survey) < 0)
9481 goto out;
9482 survey_idx++;
9483 }
9484
9485 out:
9486 cb->args[2] = survey_idx;
9487 res = skb->len;
9488 out_err:
9489 kfree(attrbuf);
9490 rtnl_unlock();
9491 return res;
9492 }
9493
nl80211_valid_wpa_versions(u32 wpa_versions)9494 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9495 {
9496 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9497 NL80211_WPA_VERSION_2 |
9498 NL80211_WPA_VERSION_3));
9499 }
9500
nl80211_authenticate(struct sk_buff * skb,struct genl_info * info)9501 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9502 {
9503 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9504 struct net_device *dev = info->user_ptr[1];
9505 struct ieee80211_channel *chan;
9506 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9507 int err, ssid_len, ie_len = 0, auth_data_len = 0;
9508 enum nl80211_auth_type auth_type;
9509 struct key_parse key;
9510 bool local_state_change;
9511 u32 freq;
9512
9513 if (!info->attrs[NL80211_ATTR_MAC])
9514 return -EINVAL;
9515
9516 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9517 return -EINVAL;
9518
9519 if (!info->attrs[NL80211_ATTR_SSID])
9520 return -EINVAL;
9521
9522 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9523 return -EINVAL;
9524
9525 err = nl80211_parse_key(info, &key);
9526 if (err)
9527 return err;
9528
9529 if (key.idx >= 0) {
9530 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9531 return -EINVAL;
9532 if (!key.p.key || !key.p.key_len)
9533 return -EINVAL;
9534 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9535 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9536 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9537 key.p.key_len != WLAN_KEY_LEN_WEP104))
9538 return -EINVAL;
9539 if (key.idx > 3)
9540 return -EINVAL;
9541 } else {
9542 key.p.key_len = 0;
9543 key.p.key = NULL;
9544 }
9545
9546 if (key.idx >= 0) {
9547 int i;
9548 bool ok = false;
9549
9550 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9551 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9552 ok = true;
9553 break;
9554 }
9555 }
9556 if (!ok)
9557 return -EINVAL;
9558 }
9559
9560 if (!rdev->ops->auth)
9561 return -EOPNOTSUPP;
9562
9563 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9564 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9565 return -EOPNOTSUPP;
9566
9567 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9568 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9569 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9570 freq +=
9571 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9572
9573 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9574 if (!chan)
9575 return -EINVAL;
9576
9577 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9578 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9579
9580 if (info->attrs[NL80211_ATTR_IE]) {
9581 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9582 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9583 }
9584
9585 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9586 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9587 return -EINVAL;
9588
9589 if ((auth_type == NL80211_AUTHTYPE_SAE ||
9590 auth_type == NL80211_AUTHTYPE_FILS_SK ||
9591 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9592 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9593 !info->attrs[NL80211_ATTR_AUTH_DATA])
9594 return -EINVAL;
9595
9596 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9597 if (auth_type != NL80211_AUTHTYPE_SAE &&
9598 auth_type != NL80211_AUTHTYPE_FILS_SK &&
9599 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9600 auth_type != NL80211_AUTHTYPE_FILS_PK)
9601 return -EINVAL;
9602 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9603 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9604 }
9605
9606 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9607
9608 /*
9609 * Since we no longer track auth state, ignore
9610 * requests to only change local state.
9611 */
9612 if (local_state_change)
9613 return 0;
9614
9615 wdev_lock(dev->ieee80211_ptr);
9616 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9617 ssid, ssid_len, ie, ie_len,
9618 key.p.key, key.p.key_len, key.idx,
9619 auth_data, auth_data_len);
9620 wdev_unlock(dev->ieee80211_ptr);
9621 return err;
9622 }
9623
validate_pae_over_nl80211(struct cfg80211_registered_device * rdev,struct genl_info * info)9624 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9625 struct genl_info *info)
9626 {
9627 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9628 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9629 return -EINVAL;
9630 }
9631
9632 if (!rdev->ops->tx_control_port ||
9633 !wiphy_ext_feature_isset(&rdev->wiphy,
9634 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9635 return -EOPNOTSUPP;
9636
9637 return 0;
9638 }
9639
nl80211_crypto_settings(struct cfg80211_registered_device * rdev,struct genl_info * info,struct cfg80211_crypto_settings * settings,int cipher_limit)9640 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9641 struct genl_info *info,
9642 struct cfg80211_crypto_settings *settings,
9643 int cipher_limit)
9644 {
9645 memset(settings, 0, sizeof(*settings));
9646
9647 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9648
9649 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9650 u16 proto;
9651
9652 proto = nla_get_u16(
9653 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9654 settings->control_port_ethertype = cpu_to_be16(proto);
9655 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9656 proto != ETH_P_PAE)
9657 return -EINVAL;
9658 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9659 settings->control_port_no_encrypt = true;
9660 } else
9661 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9662
9663 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9664 int r = validate_pae_over_nl80211(rdev, info);
9665
9666 if (r < 0)
9667 return r;
9668
9669 settings->control_port_over_nl80211 = true;
9670
9671 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9672 settings->control_port_no_preauth = true;
9673 }
9674
9675 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9676 void *data;
9677 int len, i;
9678
9679 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9680 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9681 settings->n_ciphers_pairwise = len / sizeof(u32);
9682
9683 if (len % sizeof(u32))
9684 return -EINVAL;
9685
9686 if (settings->n_ciphers_pairwise > cipher_limit)
9687 return -EINVAL;
9688
9689 memcpy(settings->ciphers_pairwise, data, len);
9690
9691 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9692 if (!cfg80211_supported_cipher_suite(
9693 &rdev->wiphy,
9694 settings->ciphers_pairwise[i]))
9695 return -EINVAL;
9696 }
9697
9698 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9699 settings->cipher_group =
9700 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9701 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9702 settings->cipher_group))
9703 return -EINVAL;
9704 }
9705
9706 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9707 settings->wpa_versions =
9708 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9709 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9710 return -EINVAL;
9711 }
9712
9713 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9714 void *data;
9715 int len;
9716
9717 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9718 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9719 settings->n_akm_suites = len / sizeof(u32);
9720
9721 if (len % sizeof(u32))
9722 return -EINVAL;
9723
9724 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9725 return -EINVAL;
9726
9727 memcpy(settings->akm_suites, data, len);
9728 }
9729
9730 if (info->attrs[NL80211_ATTR_PMK]) {
9731 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9732 return -EINVAL;
9733 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9734 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9735 !wiphy_ext_feature_isset(&rdev->wiphy,
9736 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9737 return -EINVAL;
9738 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9739 }
9740
9741 if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9742 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9743 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
9744 !wiphy_ext_feature_isset(&rdev->wiphy,
9745 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
9746 return -EINVAL;
9747 settings->sae_pwd =
9748 nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9749 settings->sae_pwd_len =
9750 nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9751 }
9752
9753 if (info->attrs[NL80211_ATTR_SAE_PWE])
9754 settings->sae_pwe =
9755 nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
9756 else
9757 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
9758
9759 return 0;
9760 }
9761
nl80211_associate(struct sk_buff * skb,struct genl_info * info)9762 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9763 {
9764 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9765 struct net_device *dev = info->user_ptr[1];
9766 struct ieee80211_channel *chan;
9767 struct cfg80211_assoc_request req = {};
9768 const u8 *bssid, *ssid;
9769 int err, ssid_len = 0;
9770 u32 freq;
9771
9772 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9773 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9774 return -EPERM;
9775
9776 if (!info->attrs[NL80211_ATTR_MAC] ||
9777 !info->attrs[NL80211_ATTR_SSID] ||
9778 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9779 return -EINVAL;
9780
9781 if (!rdev->ops->assoc)
9782 return -EOPNOTSUPP;
9783
9784 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9785 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9786 return -EOPNOTSUPP;
9787
9788 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9789
9790 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9791 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9792 freq +=
9793 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9794 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9795 if (!chan)
9796 return -EINVAL;
9797
9798 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9799 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9800
9801 if (info->attrs[NL80211_ATTR_IE]) {
9802 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9803 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9804 }
9805
9806 if (info->attrs[NL80211_ATTR_USE_MFP]) {
9807 enum nl80211_mfp mfp =
9808 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9809 if (mfp == NL80211_MFP_REQUIRED)
9810 req.use_mfp = true;
9811 else if (mfp != NL80211_MFP_NO)
9812 return -EINVAL;
9813 }
9814
9815 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9816 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9817
9818 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9819 req.flags |= ASSOC_REQ_DISABLE_HT;
9820
9821 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9822 memcpy(&req.ht_capa_mask,
9823 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9824 sizeof(req.ht_capa_mask));
9825
9826 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9827 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9828 return -EINVAL;
9829 memcpy(&req.ht_capa,
9830 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9831 sizeof(req.ht_capa));
9832 }
9833
9834 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9835 req.flags |= ASSOC_REQ_DISABLE_VHT;
9836
9837 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9838 memcpy(&req.vht_capa_mask,
9839 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9840 sizeof(req.vht_capa_mask));
9841
9842 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9843 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9844 return -EINVAL;
9845 memcpy(&req.vht_capa,
9846 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9847 sizeof(req.vht_capa));
9848 }
9849
9850 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9851 if (!((rdev->wiphy.features &
9852 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9853 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9854 !wiphy_ext_feature_isset(&rdev->wiphy,
9855 NL80211_EXT_FEATURE_RRM))
9856 return -EINVAL;
9857 req.flags |= ASSOC_REQ_USE_RRM;
9858 }
9859
9860 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9861 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9862 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9863 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9864 return -EINVAL;
9865 req.fils_nonces =
9866 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9867 }
9868
9869 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
9870 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
9871 return -EINVAL;
9872 memcpy(&req.s1g_capa_mask,
9873 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
9874 sizeof(req.s1g_capa_mask));
9875 }
9876
9877 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
9878 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
9879 return -EINVAL;
9880 memcpy(&req.s1g_capa,
9881 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
9882 sizeof(req.s1g_capa));
9883 }
9884
9885 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9886 if (!err) {
9887 wdev_lock(dev->ieee80211_ptr);
9888
9889 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9890 ssid, ssid_len, &req);
9891
9892 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9893 dev->ieee80211_ptr->conn_owner_nlportid =
9894 info->snd_portid;
9895 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9896 bssid, ETH_ALEN);
9897 }
9898
9899 wdev_unlock(dev->ieee80211_ptr);
9900 }
9901
9902 return err;
9903 }
9904
nl80211_deauthenticate(struct sk_buff * skb,struct genl_info * info)9905 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9906 {
9907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9908 struct net_device *dev = info->user_ptr[1];
9909 const u8 *ie = NULL, *bssid;
9910 int ie_len = 0, err;
9911 u16 reason_code;
9912 bool local_state_change;
9913
9914 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9915 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9916 return -EPERM;
9917
9918 if (!info->attrs[NL80211_ATTR_MAC])
9919 return -EINVAL;
9920
9921 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9922 return -EINVAL;
9923
9924 if (!rdev->ops->deauth)
9925 return -EOPNOTSUPP;
9926
9927 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9928 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9929 return -EOPNOTSUPP;
9930
9931 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9932
9933 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9934 if (reason_code == 0) {
9935 /* Reason Code 0 is reserved */
9936 return -EINVAL;
9937 }
9938
9939 if (info->attrs[NL80211_ATTR_IE]) {
9940 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9941 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9942 }
9943
9944 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9945
9946 wdev_lock(dev->ieee80211_ptr);
9947 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9948 local_state_change);
9949 wdev_unlock(dev->ieee80211_ptr);
9950 return err;
9951 }
9952
nl80211_disassociate(struct sk_buff * skb,struct genl_info * info)9953 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9954 {
9955 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9956 struct net_device *dev = info->user_ptr[1];
9957 const u8 *ie = NULL, *bssid;
9958 int ie_len = 0, err;
9959 u16 reason_code;
9960 bool local_state_change;
9961
9962 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9963 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9964 return -EPERM;
9965
9966 if (!info->attrs[NL80211_ATTR_MAC])
9967 return -EINVAL;
9968
9969 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9970 return -EINVAL;
9971
9972 if (!rdev->ops->disassoc)
9973 return -EOPNOTSUPP;
9974
9975 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9976 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9977 return -EOPNOTSUPP;
9978
9979 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9980
9981 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9982 if (reason_code == 0) {
9983 /* Reason Code 0 is reserved */
9984 return -EINVAL;
9985 }
9986
9987 if (info->attrs[NL80211_ATTR_IE]) {
9988 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9989 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9990 }
9991
9992 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9993
9994 wdev_lock(dev->ieee80211_ptr);
9995 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9996 local_state_change);
9997 wdev_unlock(dev->ieee80211_ptr);
9998 return err;
9999 }
10000
10001 static bool
nl80211_parse_mcast_rate(struct cfg80211_registered_device * rdev,int mcast_rate[NUM_NL80211_BANDS],int rateval)10002 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
10003 int mcast_rate[NUM_NL80211_BANDS],
10004 int rateval)
10005 {
10006 struct wiphy *wiphy = &rdev->wiphy;
10007 bool found = false;
10008 int band, i;
10009
10010 for (band = 0; band < NUM_NL80211_BANDS; band++) {
10011 struct ieee80211_supported_band *sband;
10012
10013 sband = wiphy->bands[band];
10014 if (!sband)
10015 continue;
10016
10017 for (i = 0; i < sband->n_bitrates; i++) {
10018 if (sband->bitrates[i].bitrate == rateval) {
10019 mcast_rate[band] = i + 1;
10020 found = true;
10021 break;
10022 }
10023 }
10024 }
10025
10026 return found;
10027 }
10028
nl80211_join_ibss(struct sk_buff * skb,struct genl_info * info)10029 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
10030 {
10031 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10032 struct net_device *dev = info->user_ptr[1];
10033 struct cfg80211_ibss_params ibss;
10034 struct wiphy *wiphy;
10035 struct cfg80211_cached_keys *connkeys = NULL;
10036 int err;
10037
10038 memset(&ibss, 0, sizeof(ibss));
10039
10040 if (!info->attrs[NL80211_ATTR_SSID] ||
10041 !nla_len(info->attrs[NL80211_ATTR_SSID]))
10042 return -EINVAL;
10043
10044 ibss.beacon_interval = 100;
10045
10046 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
10047 ibss.beacon_interval =
10048 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10049
10050 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
10051 ibss.beacon_interval);
10052 if (err)
10053 return err;
10054
10055 if (!rdev->ops->join_ibss)
10056 return -EOPNOTSUPP;
10057
10058 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10059 return -EOPNOTSUPP;
10060
10061 wiphy = &rdev->wiphy;
10062
10063 if (info->attrs[NL80211_ATTR_MAC]) {
10064 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10065
10066 if (!is_valid_ether_addr(ibss.bssid))
10067 return -EINVAL;
10068 }
10069 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10070 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10071
10072 if (info->attrs[NL80211_ATTR_IE]) {
10073 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10074 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10075 }
10076
10077 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
10078 if (err)
10079 return err;
10080
10081 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
10082 NL80211_IFTYPE_ADHOC))
10083 return -EINVAL;
10084
10085 switch (ibss.chandef.width) {
10086 case NL80211_CHAN_WIDTH_5:
10087 case NL80211_CHAN_WIDTH_10:
10088 case NL80211_CHAN_WIDTH_20_NOHT:
10089 break;
10090 case NL80211_CHAN_WIDTH_20:
10091 case NL80211_CHAN_WIDTH_40:
10092 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10093 return -EINVAL;
10094 break;
10095 case NL80211_CHAN_WIDTH_80:
10096 case NL80211_CHAN_WIDTH_80P80:
10097 case NL80211_CHAN_WIDTH_160:
10098 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10099 return -EINVAL;
10100 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10101 NL80211_EXT_FEATURE_VHT_IBSS))
10102 return -EINVAL;
10103 break;
10104 default:
10105 return -EINVAL;
10106 }
10107
10108 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
10109 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
10110
10111 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10112 u8 *rates =
10113 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10114 int n_rates =
10115 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10116 struct ieee80211_supported_band *sband =
10117 wiphy->bands[ibss.chandef.chan->band];
10118
10119 err = ieee80211_get_ratemask(sband, rates, n_rates,
10120 &ibss.basic_rates);
10121 if (err)
10122 return err;
10123 }
10124
10125 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10126 memcpy(&ibss.ht_capa_mask,
10127 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10128 sizeof(ibss.ht_capa_mask));
10129
10130 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10131 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10132 return -EINVAL;
10133 memcpy(&ibss.ht_capa,
10134 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10135 sizeof(ibss.ht_capa));
10136 }
10137
10138 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10139 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
10140 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10141 return -EINVAL;
10142
10143 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10144 bool no_ht = false;
10145
10146 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
10147 if (IS_ERR(connkeys))
10148 return PTR_ERR(connkeys);
10149
10150 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
10151 no_ht) {
10152 kfree_sensitive(connkeys);
10153 return -EINVAL;
10154 }
10155 }
10156
10157 ibss.control_port =
10158 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
10159
10160 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10161 int r = validate_pae_over_nl80211(rdev, info);
10162
10163 if (r < 0) {
10164 kfree_sensitive(connkeys);
10165 return r;
10166 }
10167
10168 ibss.control_port_over_nl80211 = true;
10169 }
10170
10171 ibss.userspace_handles_dfs =
10172 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10173
10174 wdev_lock(dev->ieee80211_ptr);
10175 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
10176 if (err)
10177 kfree_sensitive(connkeys);
10178 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
10179 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10180 wdev_unlock(dev->ieee80211_ptr);
10181
10182 return err;
10183 }
10184
nl80211_leave_ibss(struct sk_buff * skb,struct genl_info * info)10185 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
10186 {
10187 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10188 struct net_device *dev = info->user_ptr[1];
10189
10190 if (!rdev->ops->leave_ibss)
10191 return -EOPNOTSUPP;
10192
10193 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10194 return -EOPNOTSUPP;
10195
10196 return cfg80211_leave_ibss(rdev, dev, false);
10197 }
10198
nl80211_set_mcast_rate(struct sk_buff * skb,struct genl_info * info)10199 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
10200 {
10201 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10202 struct net_device *dev = info->user_ptr[1];
10203 int mcast_rate[NUM_NL80211_BANDS];
10204 u32 nla_rate;
10205 int err;
10206
10207 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
10208 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
10209 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
10210 return -EOPNOTSUPP;
10211
10212 if (!rdev->ops->set_mcast_rate)
10213 return -EOPNOTSUPP;
10214
10215 memset(mcast_rate, 0, sizeof(mcast_rate));
10216
10217 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
10218 return -EINVAL;
10219
10220 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
10221 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
10222 return -EINVAL;
10223
10224 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
10225
10226 return err;
10227 }
10228
10229 static struct sk_buff *
__cfg80211_alloc_vendor_skb(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,int approxlen,u32 portid,u32 seq,enum nl80211_commands cmd,enum nl80211_attrs attr,const struct nl80211_vendor_cmd_info * info,gfp_t gfp)10230 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
10231 struct wireless_dev *wdev, int approxlen,
10232 u32 portid, u32 seq, enum nl80211_commands cmd,
10233 enum nl80211_attrs attr,
10234 const struct nl80211_vendor_cmd_info *info,
10235 gfp_t gfp)
10236 {
10237 struct sk_buff *skb;
10238 void *hdr;
10239 struct nlattr *data;
10240
10241 skb = nlmsg_new(approxlen + 100, gfp);
10242 if (!skb)
10243 return NULL;
10244
10245 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
10246 if (!hdr) {
10247 kfree_skb(skb);
10248 return NULL;
10249 }
10250
10251 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10252 goto nla_put_failure;
10253
10254 if (info) {
10255 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
10256 info->vendor_id))
10257 goto nla_put_failure;
10258 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
10259 info->subcmd))
10260 goto nla_put_failure;
10261 }
10262
10263 if (wdev) {
10264 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10265 wdev_id(wdev), NL80211_ATTR_PAD))
10266 goto nla_put_failure;
10267 if (wdev->netdev &&
10268 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
10269 wdev->netdev->ifindex))
10270 goto nla_put_failure;
10271 }
10272
10273 data = nla_nest_start_noflag(skb, attr);
10274 if (!data)
10275 goto nla_put_failure;
10276
10277 ((void **)skb->cb)[0] = rdev;
10278 ((void **)skb->cb)[1] = hdr;
10279 ((void **)skb->cb)[2] = data;
10280
10281 return skb;
10282
10283 nla_put_failure:
10284 kfree_skb(skb);
10285 return NULL;
10286 }
10287
__cfg80211_alloc_event_skb(struct wiphy * wiphy,struct wireless_dev * wdev,enum nl80211_commands cmd,enum nl80211_attrs attr,unsigned int portid,int vendor_event_idx,int approxlen,gfp_t gfp)10288 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
10289 struct wireless_dev *wdev,
10290 enum nl80211_commands cmd,
10291 enum nl80211_attrs attr,
10292 unsigned int portid,
10293 int vendor_event_idx,
10294 int approxlen, gfp_t gfp)
10295 {
10296 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10297 const struct nl80211_vendor_cmd_info *info;
10298
10299 switch (cmd) {
10300 case NL80211_CMD_TESTMODE:
10301 if (WARN_ON(vendor_event_idx != -1))
10302 return NULL;
10303 info = NULL;
10304 break;
10305 case NL80211_CMD_VENDOR:
10306 if (WARN_ON(vendor_event_idx < 0 ||
10307 vendor_event_idx >= wiphy->n_vendor_events))
10308 return NULL;
10309 info = &wiphy->vendor_events[vendor_event_idx];
10310 break;
10311 default:
10312 WARN_ON(1);
10313 return NULL;
10314 }
10315
10316 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10317 cmd, attr, info, gfp);
10318 }
10319 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10320
__cfg80211_send_event_skb(struct sk_buff * skb,gfp_t gfp)10321 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10322 {
10323 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10324 void *hdr = ((void **)skb->cb)[1];
10325 struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10326 struct nlattr *data = ((void **)skb->cb)[2];
10327 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10328
10329 /* clear CB data for netlink core to own from now on */
10330 memset(skb->cb, 0, sizeof(skb->cb));
10331
10332 nla_nest_end(skb, data);
10333 genlmsg_end(skb, hdr);
10334
10335 if (nlhdr->nlmsg_pid) {
10336 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10337 nlhdr->nlmsg_pid);
10338 } else {
10339 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10340 mcgrp = NL80211_MCGRP_VENDOR;
10341
10342 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10343 skb, 0, mcgrp, gfp);
10344 }
10345 }
10346 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10347
10348 #ifdef CONFIG_NL80211_TESTMODE
nl80211_testmode_do(struct sk_buff * skb,struct genl_info * info)10349 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10350 {
10351 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10352 struct wireless_dev *wdev =
10353 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10354 int err;
10355
10356 if (!rdev->ops->testmode_cmd)
10357 return -EOPNOTSUPP;
10358
10359 if (IS_ERR(wdev)) {
10360 err = PTR_ERR(wdev);
10361 if (err != -EINVAL)
10362 return err;
10363 wdev = NULL;
10364 } else if (wdev->wiphy != &rdev->wiphy) {
10365 return -EINVAL;
10366 }
10367
10368 if (!info->attrs[NL80211_ATTR_TESTDATA])
10369 return -EINVAL;
10370
10371 rdev->cur_cmd_info = info;
10372 err = rdev_testmode_cmd(rdev, wdev,
10373 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10374 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10375 rdev->cur_cmd_info = NULL;
10376
10377 return err;
10378 }
10379
nl80211_testmode_dump(struct sk_buff * skb,struct netlink_callback * cb)10380 static int nl80211_testmode_dump(struct sk_buff *skb,
10381 struct netlink_callback *cb)
10382 {
10383 struct cfg80211_registered_device *rdev;
10384 struct nlattr **attrbuf = NULL;
10385 int err;
10386 long phy_idx;
10387 void *data = NULL;
10388 int data_len = 0;
10389
10390 rtnl_lock();
10391
10392 if (cb->args[0]) {
10393 /*
10394 * 0 is a valid index, but not valid for args[0],
10395 * so we need to offset by 1.
10396 */
10397 phy_idx = cb->args[0] - 1;
10398
10399 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10400 if (!rdev) {
10401 err = -ENOENT;
10402 goto out_err;
10403 }
10404 } else {
10405 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10406 GFP_KERNEL);
10407 if (!attrbuf) {
10408 err = -ENOMEM;
10409 goto out_err;
10410 }
10411
10412 err = nlmsg_parse_deprecated(cb->nlh,
10413 GENL_HDRLEN + nl80211_fam.hdrsize,
10414 attrbuf, nl80211_fam.maxattr,
10415 nl80211_policy, NULL);
10416 if (err)
10417 goto out_err;
10418
10419 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10420 if (IS_ERR(rdev)) {
10421 err = PTR_ERR(rdev);
10422 goto out_err;
10423 }
10424 phy_idx = rdev->wiphy_idx;
10425
10426 if (attrbuf[NL80211_ATTR_TESTDATA])
10427 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10428 }
10429
10430 if (cb->args[1]) {
10431 data = nla_data((void *)cb->args[1]);
10432 data_len = nla_len((void *)cb->args[1]);
10433 }
10434
10435 if (!rdev->ops->testmode_dump) {
10436 err = -EOPNOTSUPP;
10437 goto out_err;
10438 }
10439
10440 while (1) {
10441 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10442 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10443 NL80211_CMD_TESTMODE);
10444 struct nlattr *tmdata;
10445
10446 if (!hdr)
10447 break;
10448
10449 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10450 genlmsg_cancel(skb, hdr);
10451 break;
10452 }
10453
10454 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10455 if (!tmdata) {
10456 genlmsg_cancel(skb, hdr);
10457 break;
10458 }
10459 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10460 nla_nest_end(skb, tmdata);
10461
10462 if (err == -ENOBUFS || err == -ENOENT) {
10463 genlmsg_cancel(skb, hdr);
10464 break;
10465 } else if (err) {
10466 genlmsg_cancel(skb, hdr);
10467 goto out_err;
10468 }
10469
10470 genlmsg_end(skb, hdr);
10471 }
10472
10473 err = skb->len;
10474 /* see above */
10475 cb->args[0] = phy_idx + 1;
10476 out_err:
10477 kfree(attrbuf);
10478 rtnl_unlock();
10479 return err;
10480 }
10481 #endif
10482
nl80211_connect(struct sk_buff * skb,struct genl_info * info)10483 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10484 {
10485 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10486 struct net_device *dev = info->user_ptr[1];
10487 struct cfg80211_connect_params connect;
10488 struct wiphy *wiphy;
10489 struct cfg80211_cached_keys *connkeys = NULL;
10490 u32 freq = 0;
10491 int err;
10492
10493 memset(&connect, 0, sizeof(connect));
10494
10495 if (!info->attrs[NL80211_ATTR_SSID] ||
10496 !nla_len(info->attrs[NL80211_ATTR_SSID]))
10497 return -EINVAL;
10498
10499 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10500 connect.auth_type =
10501 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10502 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10503 NL80211_CMD_CONNECT))
10504 return -EINVAL;
10505 } else
10506 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10507
10508 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10509
10510 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10511 !wiphy_ext_feature_isset(&rdev->wiphy,
10512 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10513 return -EINVAL;
10514 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10515
10516 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10517 NL80211_MAX_NR_CIPHER_SUITES);
10518 if (err)
10519 return err;
10520
10521 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10522 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10523 return -EOPNOTSUPP;
10524
10525 wiphy = &rdev->wiphy;
10526
10527 connect.bg_scan_period = -1;
10528 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10529 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10530 connect.bg_scan_period =
10531 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10532 }
10533
10534 if (info->attrs[NL80211_ATTR_MAC])
10535 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10536 else if (info->attrs[NL80211_ATTR_MAC_HINT])
10537 connect.bssid_hint =
10538 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10539 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10540 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10541
10542 if (info->attrs[NL80211_ATTR_IE]) {
10543 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10544 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10545 }
10546
10547 if (info->attrs[NL80211_ATTR_USE_MFP]) {
10548 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10549 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10550 !wiphy_ext_feature_isset(&rdev->wiphy,
10551 NL80211_EXT_FEATURE_MFP_OPTIONAL))
10552 return -EOPNOTSUPP;
10553 } else {
10554 connect.mfp = NL80211_MFP_NO;
10555 }
10556
10557 if (info->attrs[NL80211_ATTR_PREV_BSSID])
10558 connect.prev_bssid =
10559 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10560
10561 if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10562 freq = MHZ_TO_KHZ(nla_get_u32(
10563 info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10564 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10565 freq +=
10566 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10567
10568 if (freq) {
10569 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10570 if (!connect.channel)
10571 return -EINVAL;
10572 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10573 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10574 freq = MHZ_TO_KHZ(freq);
10575 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10576 if (!connect.channel_hint)
10577 return -EINVAL;
10578 }
10579
10580 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10581 connect.edmg.channels =
10582 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10583
10584 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10585 connect.edmg.bw_config =
10586 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10587 }
10588
10589 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10590 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10591 if (IS_ERR(connkeys))
10592 return PTR_ERR(connkeys);
10593 }
10594
10595 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10596 connect.flags |= ASSOC_REQ_DISABLE_HT;
10597
10598 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10599 memcpy(&connect.ht_capa_mask,
10600 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10601 sizeof(connect.ht_capa_mask));
10602
10603 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10604 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10605 kfree_sensitive(connkeys);
10606 return -EINVAL;
10607 }
10608 memcpy(&connect.ht_capa,
10609 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10610 sizeof(connect.ht_capa));
10611 }
10612
10613 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10614 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10615
10616 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10617 memcpy(&connect.vht_capa_mask,
10618 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10619 sizeof(connect.vht_capa_mask));
10620
10621 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10622 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10623 kfree_sensitive(connkeys);
10624 return -EINVAL;
10625 }
10626 memcpy(&connect.vht_capa,
10627 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10628 sizeof(connect.vht_capa));
10629 }
10630
10631 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10632 if (!((rdev->wiphy.features &
10633 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10634 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10635 !wiphy_ext_feature_isset(&rdev->wiphy,
10636 NL80211_EXT_FEATURE_RRM)) {
10637 kfree_sensitive(connkeys);
10638 return -EINVAL;
10639 }
10640 connect.flags |= ASSOC_REQ_USE_RRM;
10641 }
10642
10643 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10644 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10645 kfree_sensitive(connkeys);
10646 return -EOPNOTSUPP;
10647 }
10648
10649 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10650 /* bss selection makes no sense if bssid is set */
10651 if (connect.bssid) {
10652 kfree_sensitive(connkeys);
10653 return -EINVAL;
10654 }
10655
10656 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10657 wiphy, &connect.bss_select);
10658 if (err) {
10659 kfree_sensitive(connkeys);
10660 return err;
10661 }
10662 }
10663
10664 if (wiphy_ext_feature_isset(&rdev->wiphy,
10665 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10666 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10667 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10668 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10669 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10670 connect.fils_erp_username =
10671 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10672 connect.fils_erp_username_len =
10673 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10674 connect.fils_erp_realm =
10675 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10676 connect.fils_erp_realm_len =
10677 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10678 connect.fils_erp_next_seq_num =
10679 nla_get_u16(
10680 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10681 connect.fils_erp_rrk =
10682 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10683 connect.fils_erp_rrk_len =
10684 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10685 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10686 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10687 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10688 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10689 kfree_sensitive(connkeys);
10690 return -EINVAL;
10691 }
10692
10693 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10694 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10695 kfree_sensitive(connkeys);
10696 GENL_SET_ERR_MSG(info,
10697 "external auth requires connection ownership");
10698 return -EINVAL;
10699 }
10700 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10701 }
10702
10703 wdev_lock(dev->ieee80211_ptr);
10704
10705 err = cfg80211_connect(rdev, dev, &connect, connkeys,
10706 connect.prev_bssid);
10707 if (err)
10708 kfree_sensitive(connkeys);
10709
10710 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10711 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10712 if (connect.bssid)
10713 memcpy(dev->ieee80211_ptr->disconnect_bssid,
10714 connect.bssid, ETH_ALEN);
10715 else
10716 eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10717 }
10718
10719 wdev_unlock(dev->ieee80211_ptr);
10720
10721 return err;
10722 }
10723
nl80211_update_connect_params(struct sk_buff * skb,struct genl_info * info)10724 static int nl80211_update_connect_params(struct sk_buff *skb,
10725 struct genl_info *info)
10726 {
10727 struct cfg80211_connect_params connect = {};
10728 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10729 struct net_device *dev = info->user_ptr[1];
10730 struct wireless_dev *wdev = dev->ieee80211_ptr;
10731 bool fils_sk_offload;
10732 u32 auth_type;
10733 u32 changed = 0;
10734 int ret;
10735
10736 if (!rdev->ops->update_connect_params)
10737 return -EOPNOTSUPP;
10738
10739 if (info->attrs[NL80211_ATTR_IE]) {
10740 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10741 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10742 changed |= UPDATE_ASSOC_IES;
10743 }
10744
10745 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10746 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10747
10748 /*
10749 * when driver supports fils-sk offload all attributes must be
10750 * provided. So the else covers "fils-sk-not-all" and
10751 * "no-fils-sk-any".
10752 */
10753 if (fils_sk_offload &&
10754 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10755 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10756 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10757 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10758 connect.fils_erp_username =
10759 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10760 connect.fils_erp_username_len =
10761 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10762 connect.fils_erp_realm =
10763 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10764 connect.fils_erp_realm_len =
10765 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10766 connect.fils_erp_next_seq_num =
10767 nla_get_u16(
10768 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10769 connect.fils_erp_rrk =
10770 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10771 connect.fils_erp_rrk_len =
10772 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10773 changed |= UPDATE_FILS_ERP_INFO;
10774 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10775 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10776 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10777 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10778 return -EINVAL;
10779 }
10780
10781 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10782 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10783 if (!nl80211_valid_auth_type(rdev, auth_type,
10784 NL80211_CMD_CONNECT))
10785 return -EINVAL;
10786
10787 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10788 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10789 return -EINVAL;
10790
10791 connect.auth_type = auth_type;
10792 changed |= UPDATE_AUTH_TYPE;
10793 }
10794
10795 wdev_lock(dev->ieee80211_ptr);
10796 if (!wdev->current_bss)
10797 ret = -ENOLINK;
10798 else
10799 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10800 wdev_unlock(dev->ieee80211_ptr);
10801
10802 return ret;
10803 }
10804
nl80211_disconnect(struct sk_buff * skb,struct genl_info * info)10805 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10806 {
10807 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10808 struct net_device *dev = info->user_ptr[1];
10809 u16 reason;
10810 int ret;
10811
10812 if (dev->ieee80211_ptr->conn_owner_nlportid &&
10813 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10814 return -EPERM;
10815
10816 if (!info->attrs[NL80211_ATTR_REASON_CODE])
10817 reason = WLAN_REASON_DEAUTH_LEAVING;
10818 else
10819 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10820
10821 if (reason == 0)
10822 return -EINVAL;
10823
10824 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10825 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10826 return -EOPNOTSUPP;
10827
10828 wdev_lock(dev->ieee80211_ptr);
10829 ret = cfg80211_disconnect(rdev, dev, reason, true);
10830 wdev_unlock(dev->ieee80211_ptr);
10831 return ret;
10832 }
10833
nl80211_wiphy_netns(struct sk_buff * skb,struct genl_info * info)10834 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10835 {
10836 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10837 struct net *net;
10838 int err;
10839
10840 if (info->attrs[NL80211_ATTR_PID]) {
10841 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10842
10843 net = get_net_ns_by_pid(pid);
10844 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10845 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10846
10847 net = get_net_ns_by_fd(fd);
10848 } else {
10849 return -EINVAL;
10850 }
10851
10852 if (IS_ERR(net))
10853 return PTR_ERR(net);
10854
10855 err = 0;
10856
10857 /* check if anything to do */
10858 if (!net_eq(wiphy_net(&rdev->wiphy), net))
10859 err = cfg80211_switch_netns(rdev, net);
10860
10861 put_net(net);
10862 return err;
10863 }
10864
nl80211_setdel_pmksa(struct sk_buff * skb,struct genl_info * info)10865 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10866 {
10867 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10868 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10869 struct cfg80211_pmksa *pmksa) = NULL;
10870 struct net_device *dev = info->user_ptr[1];
10871 struct cfg80211_pmksa pmksa;
10872
10873 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10874
10875 if (!info->attrs[NL80211_ATTR_PMKID])
10876 return -EINVAL;
10877
10878 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10879
10880 if (info->attrs[NL80211_ATTR_MAC]) {
10881 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10882 } else if (info->attrs[NL80211_ATTR_SSID] &&
10883 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10884 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10885 info->attrs[NL80211_ATTR_PMK])) {
10886 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10887 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10888 pmksa.cache_id =
10889 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10890 } else {
10891 return -EINVAL;
10892 }
10893 if (info->attrs[NL80211_ATTR_PMK]) {
10894 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10895 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10896 }
10897
10898 if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10899 pmksa.pmk_lifetime =
10900 nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10901
10902 if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10903 pmksa.pmk_reauth_threshold =
10904 nla_get_u8(
10905 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10906
10907 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10908 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10909 !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10910 wiphy_ext_feature_isset(&rdev->wiphy,
10911 NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10912 return -EOPNOTSUPP;
10913
10914 switch (info->genlhdr->cmd) {
10915 case NL80211_CMD_SET_PMKSA:
10916 rdev_ops = rdev->ops->set_pmksa;
10917 break;
10918 case NL80211_CMD_DEL_PMKSA:
10919 rdev_ops = rdev->ops->del_pmksa;
10920 break;
10921 default:
10922 WARN_ON(1);
10923 break;
10924 }
10925
10926 if (!rdev_ops)
10927 return -EOPNOTSUPP;
10928
10929 return rdev_ops(&rdev->wiphy, dev, &pmksa);
10930 }
10931
nl80211_flush_pmksa(struct sk_buff * skb,struct genl_info * info)10932 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10933 {
10934 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10935 struct net_device *dev = info->user_ptr[1];
10936
10937 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10938 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10939 return -EOPNOTSUPP;
10940
10941 if (!rdev->ops->flush_pmksa)
10942 return -EOPNOTSUPP;
10943
10944 return rdev_flush_pmksa(rdev, dev);
10945 }
10946
nl80211_tdls_mgmt(struct sk_buff * skb,struct genl_info * info)10947 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10948 {
10949 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10950 struct net_device *dev = info->user_ptr[1];
10951 u8 action_code, dialog_token;
10952 u32 peer_capability = 0;
10953 u16 status_code;
10954 u8 *peer;
10955 bool initiator;
10956
10957 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10958 !rdev->ops->tdls_mgmt)
10959 return -EOPNOTSUPP;
10960
10961 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10962 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10963 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10964 !info->attrs[NL80211_ATTR_IE] ||
10965 !info->attrs[NL80211_ATTR_MAC])
10966 return -EINVAL;
10967
10968 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10969 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10970 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10971 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10972 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10973 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10974 peer_capability =
10975 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10976
10977 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10978 dialog_token, status_code, peer_capability,
10979 initiator,
10980 nla_data(info->attrs[NL80211_ATTR_IE]),
10981 nla_len(info->attrs[NL80211_ATTR_IE]));
10982 }
10983
nl80211_tdls_oper(struct sk_buff * skb,struct genl_info * info)10984 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10985 {
10986 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10987 struct net_device *dev = info->user_ptr[1];
10988 enum nl80211_tdls_operation operation;
10989 u8 *peer;
10990
10991 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10992 !rdev->ops->tdls_oper)
10993 return -EOPNOTSUPP;
10994
10995 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10996 !info->attrs[NL80211_ATTR_MAC])
10997 return -EINVAL;
10998
10999 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
11000 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11001
11002 return rdev_tdls_oper(rdev, dev, peer, operation);
11003 }
11004
nl80211_remain_on_channel(struct sk_buff * skb,struct genl_info * info)11005 static int nl80211_remain_on_channel(struct sk_buff *skb,
11006 struct genl_info *info)
11007 {
11008 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11009 struct wireless_dev *wdev = info->user_ptr[1];
11010 struct cfg80211_chan_def chandef;
11011 const struct cfg80211_chan_def *compat_chandef;
11012 struct sk_buff *msg;
11013 void *hdr;
11014 u64 cookie;
11015 u32 duration;
11016 int err;
11017
11018 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11019 !info->attrs[NL80211_ATTR_DURATION])
11020 return -EINVAL;
11021
11022 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11023
11024 if (!rdev->ops->remain_on_channel ||
11025 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
11026 return -EOPNOTSUPP;
11027
11028 /*
11029 * We should be on that channel for at least a minimum amount of
11030 * time (10ms) but no longer than the driver supports.
11031 */
11032 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11033 duration > rdev->wiphy.max_remain_on_channel_duration)
11034 return -EINVAL;
11035
11036 err = nl80211_parse_chandef(rdev, info, &chandef);
11037 if (err)
11038 return err;
11039
11040 wdev_lock(wdev);
11041 if (!cfg80211_off_channel_oper_allowed(wdev) &&
11042 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
11043 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
11044 &chandef);
11045 if (compat_chandef != &chandef) {
11046 wdev_unlock(wdev);
11047 return -EBUSY;
11048 }
11049 }
11050 wdev_unlock(wdev);
11051
11052 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11053 if (!msg)
11054 return -ENOMEM;
11055
11056 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11057 NL80211_CMD_REMAIN_ON_CHANNEL);
11058 if (!hdr) {
11059 err = -ENOBUFS;
11060 goto free_msg;
11061 }
11062
11063 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
11064 duration, &cookie);
11065
11066 if (err)
11067 goto free_msg;
11068
11069 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11070 NL80211_ATTR_PAD))
11071 goto nla_put_failure;
11072
11073 genlmsg_end(msg, hdr);
11074
11075 return genlmsg_reply(msg, info);
11076
11077 nla_put_failure:
11078 err = -ENOBUFS;
11079 free_msg:
11080 nlmsg_free(msg);
11081 return err;
11082 }
11083
nl80211_cancel_remain_on_channel(struct sk_buff * skb,struct genl_info * info)11084 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
11085 struct genl_info *info)
11086 {
11087 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11088 struct wireless_dev *wdev = info->user_ptr[1];
11089 u64 cookie;
11090
11091 if (!info->attrs[NL80211_ATTR_COOKIE])
11092 return -EINVAL;
11093
11094 if (!rdev->ops->cancel_remain_on_channel)
11095 return -EOPNOTSUPP;
11096
11097 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11098
11099 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
11100 }
11101
nl80211_set_tx_bitrate_mask(struct sk_buff * skb,struct genl_info * info)11102 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
11103 struct genl_info *info)
11104 {
11105 struct cfg80211_bitrate_mask mask;
11106 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11107 struct net_device *dev = info->user_ptr[1];
11108 struct wireless_dev *wdev = dev->ieee80211_ptr;
11109 int err;
11110
11111 if (!rdev->ops->set_bitrate_mask)
11112 return -EOPNOTSUPP;
11113
11114 wdev_lock(wdev);
11115 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11116 NL80211_ATTR_TX_RATES, &mask,
11117 dev);
11118 if (err)
11119 goto out;
11120
11121 err = rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
11122 out:
11123 wdev_unlock(wdev);
11124 return err;
11125 }
11126
nl80211_register_mgmt(struct sk_buff * skb,struct genl_info * info)11127 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
11128 {
11129 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11130 struct wireless_dev *wdev = info->user_ptr[1];
11131 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
11132
11133 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
11134 return -EINVAL;
11135
11136 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
11137 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
11138
11139 switch (wdev->iftype) {
11140 case NL80211_IFTYPE_STATION:
11141 case NL80211_IFTYPE_ADHOC:
11142 case NL80211_IFTYPE_P2P_CLIENT:
11143 case NL80211_IFTYPE_AP:
11144 case NL80211_IFTYPE_AP_VLAN:
11145 case NL80211_IFTYPE_MESH_POINT:
11146 case NL80211_IFTYPE_P2P_GO:
11147 case NL80211_IFTYPE_P2P_DEVICE:
11148 break;
11149 case NL80211_IFTYPE_NAN:
11150 default:
11151 return -EOPNOTSUPP;
11152 }
11153
11154 /* not much point in registering if we can't reply */
11155 if (!rdev->ops->mgmt_tx)
11156 return -EOPNOTSUPP;
11157
11158 if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
11159 !wiphy_ext_feature_isset(&rdev->wiphy,
11160 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
11161 GENL_SET_ERR_MSG(info,
11162 "multicast RX registrations are not supported");
11163 return -EOPNOTSUPP;
11164 }
11165
11166 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
11167 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11168 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11169 info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
11170 info->extack);
11171 }
11172
nl80211_tx_mgmt(struct sk_buff * skb,struct genl_info * info)11173 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
11174 {
11175 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11176 struct wireless_dev *wdev = info->user_ptr[1];
11177 struct cfg80211_chan_def chandef;
11178 int err;
11179 void *hdr = NULL;
11180 u64 cookie;
11181 struct sk_buff *msg = NULL;
11182 struct cfg80211_mgmt_tx_params params = {
11183 .dont_wait_for_ack =
11184 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
11185 };
11186
11187 if (!info->attrs[NL80211_ATTR_FRAME])
11188 return -EINVAL;
11189
11190 if (!rdev->ops->mgmt_tx)
11191 return -EOPNOTSUPP;
11192
11193 switch (wdev->iftype) {
11194 case NL80211_IFTYPE_P2P_DEVICE:
11195 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
11196 return -EINVAL;
11197 case NL80211_IFTYPE_STATION:
11198 case NL80211_IFTYPE_ADHOC:
11199 case NL80211_IFTYPE_P2P_CLIENT:
11200 case NL80211_IFTYPE_AP:
11201 case NL80211_IFTYPE_AP_VLAN:
11202 case NL80211_IFTYPE_MESH_POINT:
11203 case NL80211_IFTYPE_P2P_GO:
11204 break;
11205 case NL80211_IFTYPE_NAN:
11206 default:
11207 return -EOPNOTSUPP;
11208 }
11209
11210 if (info->attrs[NL80211_ATTR_DURATION]) {
11211 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11212 return -EINVAL;
11213 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11214
11215 /*
11216 * We should wait on the channel for at least a minimum amount
11217 * of time (10ms) but no longer than the driver supports.
11218 */
11219 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11220 params.wait > rdev->wiphy.max_remain_on_channel_duration)
11221 return -EINVAL;
11222 }
11223
11224 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
11225
11226 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11227 return -EINVAL;
11228
11229 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
11230
11231 /* get the channel if any has been specified, otherwise pass NULL to
11232 * the driver. The latter will use the current one
11233 */
11234 chandef.chan = NULL;
11235 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11236 err = nl80211_parse_chandef(rdev, info, &chandef);
11237 if (err)
11238 return err;
11239 }
11240
11241 if (!chandef.chan && params.offchan)
11242 return -EINVAL;
11243
11244 wdev_lock(wdev);
11245 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
11246 wdev_unlock(wdev);
11247 return -EBUSY;
11248 }
11249 wdev_unlock(wdev);
11250
11251 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
11252 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
11253
11254 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
11255 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11256 int i;
11257
11258 if (len % sizeof(u16))
11259 return -EINVAL;
11260
11261 params.n_csa_offsets = len / sizeof(u16);
11262 params.csa_offsets =
11263 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11264
11265 /* check that all the offsets fit the frame */
11266 for (i = 0; i < params.n_csa_offsets; i++) {
11267 if (params.csa_offsets[i] >= params.len)
11268 return -EINVAL;
11269 }
11270 }
11271
11272 if (!params.dont_wait_for_ack) {
11273 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11274 if (!msg)
11275 return -ENOMEM;
11276
11277 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11278 NL80211_CMD_FRAME);
11279 if (!hdr) {
11280 err = -ENOBUFS;
11281 goto free_msg;
11282 }
11283 }
11284
11285 params.chan = chandef.chan;
11286 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie);
11287 if (err)
11288 goto free_msg;
11289
11290 if (msg) {
11291 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11292 NL80211_ATTR_PAD))
11293 goto nla_put_failure;
11294
11295 genlmsg_end(msg, hdr);
11296 return genlmsg_reply(msg, info);
11297 }
11298
11299 return 0;
11300
11301 nla_put_failure:
11302 err = -ENOBUFS;
11303 free_msg:
11304 nlmsg_free(msg);
11305 return err;
11306 }
11307
nl80211_tx_mgmt_cancel_wait(struct sk_buff * skb,struct genl_info * info)11308 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
11309 {
11310 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11311 struct wireless_dev *wdev = info->user_ptr[1];
11312 u64 cookie;
11313
11314 if (!info->attrs[NL80211_ATTR_COOKIE])
11315 return -EINVAL;
11316
11317 if (!rdev->ops->mgmt_tx_cancel_wait)
11318 return -EOPNOTSUPP;
11319
11320 switch (wdev->iftype) {
11321 case NL80211_IFTYPE_STATION:
11322 case NL80211_IFTYPE_ADHOC:
11323 case NL80211_IFTYPE_P2P_CLIENT:
11324 case NL80211_IFTYPE_AP:
11325 case NL80211_IFTYPE_AP_VLAN:
11326 case NL80211_IFTYPE_P2P_GO:
11327 case NL80211_IFTYPE_P2P_DEVICE:
11328 break;
11329 case NL80211_IFTYPE_NAN:
11330 default:
11331 return -EOPNOTSUPP;
11332 }
11333
11334 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11335
11336 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11337 }
11338
nl80211_set_power_save(struct sk_buff * skb,struct genl_info * info)11339 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11340 {
11341 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11342 struct wireless_dev *wdev;
11343 struct net_device *dev = info->user_ptr[1];
11344 u8 ps_state;
11345 bool state;
11346 int err;
11347
11348 if (!info->attrs[NL80211_ATTR_PS_STATE])
11349 return -EINVAL;
11350
11351 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11352
11353 wdev = dev->ieee80211_ptr;
11354
11355 if (!rdev->ops->set_power_mgmt)
11356 return -EOPNOTSUPP;
11357
11358 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11359
11360 if (state == wdev->ps)
11361 return 0;
11362
11363 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11364 if (!err)
11365 wdev->ps = state;
11366 return err;
11367 }
11368
nl80211_get_power_save(struct sk_buff * skb,struct genl_info * info)11369 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11370 {
11371 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11372 enum nl80211_ps_state ps_state;
11373 struct wireless_dev *wdev;
11374 struct net_device *dev = info->user_ptr[1];
11375 struct sk_buff *msg;
11376 void *hdr;
11377 int err;
11378
11379 wdev = dev->ieee80211_ptr;
11380
11381 if (!rdev->ops->set_power_mgmt)
11382 return -EOPNOTSUPP;
11383
11384 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11385 if (!msg)
11386 return -ENOMEM;
11387
11388 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11389 NL80211_CMD_GET_POWER_SAVE);
11390 if (!hdr) {
11391 err = -ENOBUFS;
11392 goto free_msg;
11393 }
11394
11395 if (wdev->ps)
11396 ps_state = NL80211_PS_ENABLED;
11397 else
11398 ps_state = NL80211_PS_DISABLED;
11399
11400 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11401 goto nla_put_failure;
11402
11403 genlmsg_end(msg, hdr);
11404 return genlmsg_reply(msg, info);
11405
11406 nla_put_failure:
11407 err = -ENOBUFS;
11408 free_msg:
11409 nlmsg_free(msg);
11410 return err;
11411 }
11412
11413 static const struct nla_policy
11414 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11415 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11416 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11417 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11418 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11419 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11420 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11421 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11422 };
11423
nl80211_set_cqm_txe(struct genl_info * info,u32 rate,u32 pkts,u32 intvl)11424 static int nl80211_set_cqm_txe(struct genl_info *info,
11425 u32 rate, u32 pkts, u32 intvl)
11426 {
11427 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11428 struct net_device *dev = info->user_ptr[1];
11429 struct wireless_dev *wdev = dev->ieee80211_ptr;
11430
11431 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11432 return -EINVAL;
11433
11434 if (!rdev->ops->set_cqm_txe_config)
11435 return -EOPNOTSUPP;
11436
11437 if (wdev->iftype != NL80211_IFTYPE_STATION &&
11438 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11439 return -EOPNOTSUPP;
11440
11441 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11442 }
11443
cfg80211_cqm_rssi_update(struct cfg80211_registered_device * rdev,struct net_device * dev)11444 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11445 struct net_device *dev)
11446 {
11447 struct wireless_dev *wdev = dev->ieee80211_ptr;
11448 s32 last, low, high;
11449 u32 hyst;
11450 int i, n, low_index;
11451 int err;
11452
11453 /* RSSI reporting disabled? */
11454 if (!wdev->cqm_config)
11455 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11456
11457 /*
11458 * Obtain current RSSI value if possible, if not and no RSSI threshold
11459 * event has been received yet, we should receive an event after a
11460 * connection is established and enough beacons received to calculate
11461 * the average.
11462 */
11463 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11464 rdev->ops->get_station) {
11465 struct station_info sinfo = {};
11466 u8 *mac_addr;
11467
11468 mac_addr = wdev->current_bss->pub.bssid;
11469
11470 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11471 if (err)
11472 return err;
11473
11474 cfg80211_sinfo_release_content(&sinfo);
11475 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11476 wdev->cqm_config->last_rssi_event_value =
11477 (s8) sinfo.rx_beacon_signal_avg;
11478 }
11479
11480 last = wdev->cqm_config->last_rssi_event_value;
11481 hyst = wdev->cqm_config->rssi_hyst;
11482 n = wdev->cqm_config->n_rssi_thresholds;
11483
11484 for (i = 0; i < n; i++) {
11485 i = array_index_nospec(i, n);
11486 if (last < wdev->cqm_config->rssi_thresholds[i])
11487 break;
11488 }
11489
11490 low_index = i - 1;
11491 if (low_index >= 0) {
11492 low_index = array_index_nospec(low_index, n);
11493 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11494 } else {
11495 low = S32_MIN;
11496 }
11497 if (i < n) {
11498 i = array_index_nospec(i, n);
11499 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11500 } else {
11501 high = S32_MAX;
11502 }
11503
11504 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11505 }
11506
nl80211_set_cqm_rssi(struct genl_info * info,const s32 * thresholds,int n_thresholds,u32 hysteresis)11507 static int nl80211_set_cqm_rssi(struct genl_info *info,
11508 const s32 *thresholds, int n_thresholds,
11509 u32 hysteresis)
11510 {
11511 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11512 struct net_device *dev = info->user_ptr[1];
11513 struct wireless_dev *wdev = dev->ieee80211_ptr;
11514 int i, err;
11515 s32 prev = S32_MIN;
11516
11517 /* Check all values negative and sorted */
11518 for (i = 0; i < n_thresholds; i++) {
11519 if (thresholds[i] > 0 || thresholds[i] <= prev)
11520 return -EINVAL;
11521
11522 prev = thresholds[i];
11523 }
11524
11525 if (wdev->iftype != NL80211_IFTYPE_STATION &&
11526 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11527 return -EOPNOTSUPP;
11528
11529 wdev_lock(wdev);
11530 cfg80211_cqm_config_free(wdev);
11531 wdev_unlock(wdev);
11532
11533 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11534 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11535 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11536
11537 return rdev_set_cqm_rssi_config(rdev, dev,
11538 thresholds[0], hysteresis);
11539 }
11540
11541 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11542 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11543 return -EOPNOTSUPP;
11544
11545 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11546 n_thresholds = 0;
11547
11548 wdev_lock(wdev);
11549 if (n_thresholds) {
11550 struct cfg80211_cqm_config *cqm_config;
11551
11552 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11553 n_thresholds * sizeof(s32), GFP_KERNEL);
11554 if (!cqm_config) {
11555 err = -ENOMEM;
11556 goto unlock;
11557 }
11558
11559 cqm_config->rssi_hyst = hysteresis;
11560 cqm_config->n_rssi_thresholds = n_thresholds;
11561 memcpy(cqm_config->rssi_thresholds, thresholds,
11562 n_thresholds * sizeof(s32));
11563
11564 wdev->cqm_config = cqm_config;
11565 }
11566
11567 err = cfg80211_cqm_rssi_update(rdev, dev);
11568
11569 unlock:
11570 wdev_unlock(wdev);
11571
11572 return err;
11573 }
11574
nl80211_set_cqm(struct sk_buff * skb,struct genl_info * info)11575 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11576 {
11577 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11578 struct nlattr *cqm;
11579 int err;
11580
11581 cqm = info->attrs[NL80211_ATTR_CQM];
11582 if (!cqm)
11583 return -EINVAL;
11584
11585 err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11586 nl80211_attr_cqm_policy,
11587 info->extack);
11588 if (err)
11589 return err;
11590
11591 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11592 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11593 const s32 *thresholds =
11594 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11595 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11596 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11597
11598 if (len % 4)
11599 return -EINVAL;
11600
11601 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11602 hysteresis);
11603 }
11604
11605 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11606 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11607 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11608 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11609 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11610 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11611
11612 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11613 }
11614
11615 return -EINVAL;
11616 }
11617
nl80211_join_ocb(struct sk_buff * skb,struct genl_info * info)11618 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11619 {
11620 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11621 struct net_device *dev = info->user_ptr[1];
11622 struct ocb_setup setup = {};
11623 int err;
11624
11625 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11626 if (err)
11627 return err;
11628
11629 return cfg80211_join_ocb(rdev, dev, &setup);
11630 }
11631
nl80211_leave_ocb(struct sk_buff * skb,struct genl_info * info)11632 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11633 {
11634 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11635 struct net_device *dev = info->user_ptr[1];
11636
11637 return cfg80211_leave_ocb(rdev, dev);
11638 }
11639
nl80211_join_mesh(struct sk_buff * skb,struct genl_info * info)11640 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11641 {
11642 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11643 struct net_device *dev = info->user_ptr[1];
11644 struct mesh_config cfg;
11645 struct mesh_setup setup;
11646 int err;
11647
11648 /* start with default */
11649 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11650 memcpy(&setup, &default_mesh_setup, sizeof(setup));
11651
11652 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11653 /* and parse parameters if given */
11654 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11655 if (err)
11656 return err;
11657 }
11658
11659 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11660 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11661 return -EINVAL;
11662
11663 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11664 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11665
11666 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11667 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11668 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11669 return -EINVAL;
11670
11671 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11672 setup.beacon_interval =
11673 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11674
11675 err = cfg80211_validate_beacon_int(rdev,
11676 NL80211_IFTYPE_MESH_POINT,
11677 setup.beacon_interval);
11678 if (err)
11679 return err;
11680 }
11681
11682 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11683 setup.dtim_period =
11684 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11685 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11686 return -EINVAL;
11687 }
11688
11689 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11690 /* parse additional setup parameters if given */
11691 err = nl80211_parse_mesh_setup(info, &setup);
11692 if (err)
11693 return err;
11694 }
11695
11696 if (setup.user_mpm)
11697 cfg.auto_open_plinks = false;
11698
11699 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11700 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11701 if (err)
11702 return err;
11703 } else {
11704 /* __cfg80211_join_mesh() will sort it out */
11705 setup.chandef.chan = NULL;
11706 }
11707
11708 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11709 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11710 int n_rates =
11711 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11712 struct ieee80211_supported_band *sband;
11713
11714 if (!setup.chandef.chan)
11715 return -EINVAL;
11716
11717 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11718
11719 err = ieee80211_get_ratemask(sband, rates, n_rates,
11720 &setup.basic_rates);
11721 if (err)
11722 return err;
11723 }
11724
11725 if (info->attrs[NL80211_ATTR_TX_RATES]) {
11726 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11727 NL80211_ATTR_TX_RATES,
11728 &setup.beacon_rate,
11729 dev);
11730 if (err)
11731 return err;
11732
11733 if (!setup.chandef.chan)
11734 return -EINVAL;
11735
11736 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11737 &setup.beacon_rate);
11738 if (err)
11739 return err;
11740 }
11741
11742 setup.userspace_handles_dfs =
11743 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11744
11745 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11746 int r = validate_pae_over_nl80211(rdev, info);
11747
11748 if (r < 0)
11749 return r;
11750
11751 setup.control_port_over_nl80211 = true;
11752 }
11753
11754 wdev_lock(dev->ieee80211_ptr);
11755 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11756 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11757 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11758 wdev_unlock(dev->ieee80211_ptr);
11759
11760 return err;
11761 }
11762
nl80211_leave_mesh(struct sk_buff * skb,struct genl_info * info)11763 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11764 {
11765 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11766 struct net_device *dev = info->user_ptr[1];
11767
11768 return cfg80211_leave_mesh(rdev, dev);
11769 }
11770
11771 #ifdef CONFIG_PM
nl80211_send_wowlan_patterns(struct sk_buff * msg,struct cfg80211_registered_device * rdev)11772 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11773 struct cfg80211_registered_device *rdev)
11774 {
11775 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11776 struct nlattr *nl_pats, *nl_pat;
11777 int i, pat_len;
11778
11779 if (!wowlan->n_patterns)
11780 return 0;
11781
11782 nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11783 if (!nl_pats)
11784 return -ENOBUFS;
11785
11786 for (i = 0; i < wowlan->n_patterns; i++) {
11787 nl_pat = nla_nest_start_noflag(msg, i + 1);
11788 if (!nl_pat)
11789 return -ENOBUFS;
11790 pat_len = wowlan->patterns[i].pattern_len;
11791 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11792 wowlan->patterns[i].mask) ||
11793 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11794 wowlan->patterns[i].pattern) ||
11795 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11796 wowlan->patterns[i].pkt_offset))
11797 return -ENOBUFS;
11798 nla_nest_end(msg, nl_pat);
11799 }
11800 nla_nest_end(msg, nl_pats);
11801
11802 return 0;
11803 }
11804
nl80211_send_wowlan_tcp(struct sk_buff * msg,struct cfg80211_wowlan_tcp * tcp)11805 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11806 struct cfg80211_wowlan_tcp *tcp)
11807 {
11808 struct nlattr *nl_tcp;
11809
11810 if (!tcp)
11811 return 0;
11812
11813 nl_tcp = nla_nest_start_noflag(msg,
11814 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11815 if (!nl_tcp)
11816 return -ENOBUFS;
11817
11818 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11819 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11820 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11821 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11822 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11823 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11824 tcp->payload_len, tcp->payload) ||
11825 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11826 tcp->data_interval) ||
11827 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11828 tcp->wake_len, tcp->wake_data) ||
11829 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11830 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11831 return -ENOBUFS;
11832
11833 if (tcp->payload_seq.len &&
11834 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11835 sizeof(tcp->payload_seq), &tcp->payload_seq))
11836 return -ENOBUFS;
11837
11838 if (tcp->payload_tok.len &&
11839 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11840 sizeof(tcp->payload_tok) + tcp->tokens_size,
11841 &tcp->payload_tok))
11842 return -ENOBUFS;
11843
11844 nla_nest_end(msg, nl_tcp);
11845
11846 return 0;
11847 }
11848
nl80211_send_wowlan_nd(struct sk_buff * msg,struct cfg80211_sched_scan_request * req)11849 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11850 struct cfg80211_sched_scan_request *req)
11851 {
11852 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11853 int i;
11854
11855 if (!req)
11856 return 0;
11857
11858 nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11859 if (!nd)
11860 return -ENOBUFS;
11861
11862 if (req->n_scan_plans == 1 &&
11863 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11864 req->scan_plans[0].interval * 1000))
11865 return -ENOBUFS;
11866
11867 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11868 return -ENOBUFS;
11869
11870 if (req->relative_rssi_set) {
11871 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11872
11873 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11874 req->relative_rssi))
11875 return -ENOBUFS;
11876
11877 rssi_adjust.band = req->rssi_adjust.band;
11878 rssi_adjust.delta = req->rssi_adjust.delta;
11879 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11880 sizeof(rssi_adjust), &rssi_adjust))
11881 return -ENOBUFS;
11882 }
11883
11884 freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11885 if (!freqs)
11886 return -ENOBUFS;
11887
11888 for (i = 0; i < req->n_channels; i++) {
11889 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11890 return -ENOBUFS;
11891 }
11892
11893 nla_nest_end(msg, freqs);
11894
11895 if (req->n_match_sets) {
11896 matches = nla_nest_start_noflag(msg,
11897 NL80211_ATTR_SCHED_SCAN_MATCH);
11898 if (!matches)
11899 return -ENOBUFS;
11900
11901 for (i = 0; i < req->n_match_sets; i++) {
11902 match = nla_nest_start_noflag(msg, i);
11903 if (!match)
11904 return -ENOBUFS;
11905
11906 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11907 req->match_sets[i].ssid.ssid_len,
11908 req->match_sets[i].ssid.ssid))
11909 return -ENOBUFS;
11910 nla_nest_end(msg, match);
11911 }
11912 nla_nest_end(msg, matches);
11913 }
11914
11915 scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11916 if (!scan_plans)
11917 return -ENOBUFS;
11918
11919 for (i = 0; i < req->n_scan_plans; i++) {
11920 scan_plan = nla_nest_start_noflag(msg, i + 1);
11921 if (!scan_plan)
11922 return -ENOBUFS;
11923
11924 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11925 req->scan_plans[i].interval) ||
11926 (req->scan_plans[i].iterations &&
11927 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11928 req->scan_plans[i].iterations)))
11929 return -ENOBUFS;
11930 nla_nest_end(msg, scan_plan);
11931 }
11932 nla_nest_end(msg, scan_plans);
11933
11934 nla_nest_end(msg, nd);
11935
11936 return 0;
11937 }
11938
nl80211_get_wowlan(struct sk_buff * skb,struct genl_info * info)11939 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11940 {
11941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11942 struct sk_buff *msg;
11943 void *hdr;
11944 u32 size = NLMSG_DEFAULT_SIZE;
11945
11946 if (!rdev->wiphy.wowlan)
11947 return -EOPNOTSUPP;
11948
11949 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11950 /* adjust size to have room for all the data */
11951 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11952 rdev->wiphy.wowlan_config->tcp->payload_len +
11953 rdev->wiphy.wowlan_config->tcp->wake_len +
11954 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11955 }
11956
11957 msg = nlmsg_new(size, GFP_KERNEL);
11958 if (!msg)
11959 return -ENOMEM;
11960
11961 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11962 NL80211_CMD_GET_WOWLAN);
11963 if (!hdr)
11964 goto nla_put_failure;
11965
11966 if (rdev->wiphy.wowlan_config) {
11967 struct nlattr *nl_wowlan;
11968
11969 nl_wowlan = nla_nest_start_noflag(msg,
11970 NL80211_ATTR_WOWLAN_TRIGGERS);
11971 if (!nl_wowlan)
11972 goto nla_put_failure;
11973
11974 if ((rdev->wiphy.wowlan_config->any &&
11975 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11976 (rdev->wiphy.wowlan_config->disconnect &&
11977 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11978 (rdev->wiphy.wowlan_config->magic_pkt &&
11979 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11980 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11981 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11982 (rdev->wiphy.wowlan_config->eap_identity_req &&
11983 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11984 (rdev->wiphy.wowlan_config->four_way_handshake &&
11985 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11986 (rdev->wiphy.wowlan_config->rfkill_release &&
11987 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11988 goto nla_put_failure;
11989
11990 if (nl80211_send_wowlan_patterns(msg, rdev))
11991 goto nla_put_failure;
11992
11993 if (nl80211_send_wowlan_tcp(msg,
11994 rdev->wiphy.wowlan_config->tcp))
11995 goto nla_put_failure;
11996
11997 if (nl80211_send_wowlan_nd(
11998 msg,
11999 rdev->wiphy.wowlan_config->nd_config))
12000 goto nla_put_failure;
12001
12002 nla_nest_end(msg, nl_wowlan);
12003 }
12004
12005 genlmsg_end(msg, hdr);
12006 return genlmsg_reply(msg, info);
12007
12008 nla_put_failure:
12009 nlmsg_free(msg);
12010 return -ENOBUFS;
12011 }
12012
nl80211_parse_wowlan_tcp(struct cfg80211_registered_device * rdev,struct nlattr * attr,struct cfg80211_wowlan * trig)12013 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
12014 struct nlattr *attr,
12015 struct cfg80211_wowlan *trig)
12016 {
12017 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
12018 struct cfg80211_wowlan_tcp *cfg;
12019 struct nl80211_wowlan_tcp_data_token *tok = NULL;
12020 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
12021 u32 size;
12022 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
12023 int err, port;
12024
12025 if (!rdev->wiphy.wowlan->tcp)
12026 return -EINVAL;
12027
12028 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
12029 nl80211_wowlan_tcp_policy, NULL);
12030 if (err)
12031 return err;
12032
12033 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
12034 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
12035 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
12036 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
12037 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
12038 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
12039 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
12040 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
12041 return -EINVAL;
12042
12043 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
12044 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
12045 return -EINVAL;
12046
12047 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
12048 rdev->wiphy.wowlan->tcp->data_interval_max ||
12049 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
12050 return -EINVAL;
12051
12052 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
12053 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
12054 return -EINVAL;
12055
12056 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
12057 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
12058 return -EINVAL;
12059
12060 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
12061 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12062
12063 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12064 tokens_size = tokln - sizeof(*tok);
12065
12066 if (!tok->len || tokens_size % tok->len)
12067 return -EINVAL;
12068 if (!rdev->wiphy.wowlan->tcp->tok)
12069 return -EINVAL;
12070 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
12071 return -EINVAL;
12072 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
12073 return -EINVAL;
12074 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
12075 return -EINVAL;
12076 if (tok->offset + tok->len > data_size)
12077 return -EINVAL;
12078 }
12079
12080 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
12081 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
12082 if (!rdev->wiphy.wowlan->tcp->seq)
12083 return -EINVAL;
12084 if (seq->len == 0 || seq->len > 4)
12085 return -EINVAL;
12086 if (seq->len + seq->offset > data_size)
12087 return -EINVAL;
12088 }
12089
12090 size = sizeof(*cfg);
12091 size += data_size;
12092 size += wake_size + wake_mask_size;
12093 size += tokens_size;
12094
12095 cfg = kzalloc(size, GFP_KERNEL);
12096 if (!cfg)
12097 return -ENOMEM;
12098 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
12099 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
12100 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
12101 ETH_ALEN);
12102 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
12103 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
12104 else
12105 port = 0;
12106 #ifdef CONFIG_INET
12107 /* allocate a socket and port for it and use it */
12108 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
12109 IPPROTO_TCP, &cfg->sock, 1);
12110 if (err) {
12111 kfree(cfg);
12112 return err;
12113 }
12114 if (inet_csk_get_port(cfg->sock->sk, port)) {
12115 sock_release(cfg->sock);
12116 kfree(cfg);
12117 return -EADDRINUSE;
12118 }
12119 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
12120 #else
12121 if (!port) {
12122 kfree(cfg);
12123 return -EINVAL;
12124 }
12125 cfg->src_port = port;
12126 #endif
12127
12128 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
12129 cfg->payload_len = data_size;
12130 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
12131 memcpy((void *)cfg->payload,
12132 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
12133 data_size);
12134 if (seq)
12135 cfg->payload_seq = *seq;
12136 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
12137 cfg->wake_len = wake_size;
12138 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
12139 memcpy((void *)cfg->wake_data,
12140 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
12141 wake_size);
12142 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
12143 data_size + wake_size;
12144 memcpy((void *)cfg->wake_mask,
12145 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
12146 wake_mask_size);
12147 if (tok) {
12148 cfg->tokens_size = tokens_size;
12149 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
12150 }
12151
12152 trig->tcp = cfg;
12153
12154 return 0;
12155 }
12156
nl80211_parse_wowlan_nd(struct cfg80211_registered_device * rdev,const struct wiphy_wowlan_support * wowlan,struct nlattr * attr,struct cfg80211_wowlan * trig)12157 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
12158 const struct wiphy_wowlan_support *wowlan,
12159 struct nlattr *attr,
12160 struct cfg80211_wowlan *trig)
12161 {
12162 struct nlattr **tb;
12163 int err;
12164
12165 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
12166 if (!tb)
12167 return -ENOMEM;
12168
12169 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
12170 err = -EOPNOTSUPP;
12171 goto out;
12172 }
12173
12174 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
12175 nl80211_policy, NULL);
12176 if (err)
12177 goto out;
12178
12179 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
12180 wowlan->max_nd_match_sets);
12181 err = PTR_ERR_OR_ZERO(trig->nd_config);
12182 if (err)
12183 trig->nd_config = NULL;
12184
12185 out:
12186 kfree(tb);
12187 return err;
12188 }
12189
nl80211_set_wowlan(struct sk_buff * skb,struct genl_info * info)12190 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
12191 {
12192 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12193 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
12194 struct cfg80211_wowlan new_triggers = {};
12195 struct cfg80211_wowlan *ntrig;
12196 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
12197 int err, i;
12198 bool prev_enabled = rdev->wiphy.wowlan_config;
12199 bool regular = false;
12200
12201 if (!wowlan)
12202 return -EOPNOTSUPP;
12203
12204 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
12205 cfg80211_rdev_free_wowlan(rdev);
12206 rdev->wiphy.wowlan_config = NULL;
12207 goto set_wakeup;
12208 }
12209
12210 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
12211 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
12212 nl80211_wowlan_policy, info->extack);
12213 if (err)
12214 return err;
12215
12216 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
12217 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
12218 return -EINVAL;
12219 new_triggers.any = true;
12220 }
12221
12222 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
12223 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
12224 return -EINVAL;
12225 new_triggers.disconnect = true;
12226 regular = true;
12227 }
12228
12229 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
12230 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
12231 return -EINVAL;
12232 new_triggers.magic_pkt = true;
12233 regular = true;
12234 }
12235
12236 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
12237 return -EINVAL;
12238
12239 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
12240 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
12241 return -EINVAL;
12242 new_triggers.gtk_rekey_failure = true;
12243 regular = true;
12244 }
12245
12246 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
12247 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
12248 return -EINVAL;
12249 new_triggers.eap_identity_req = true;
12250 regular = true;
12251 }
12252
12253 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
12254 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
12255 return -EINVAL;
12256 new_triggers.four_way_handshake = true;
12257 regular = true;
12258 }
12259
12260 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
12261 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
12262 return -EINVAL;
12263 new_triggers.rfkill_release = true;
12264 regular = true;
12265 }
12266
12267 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
12268 struct nlattr *pat;
12269 int n_patterns = 0;
12270 int rem, pat_len, mask_len, pkt_offset;
12271 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12272
12273 regular = true;
12274
12275 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12276 rem)
12277 n_patterns++;
12278 if (n_patterns > wowlan->n_patterns)
12279 return -EINVAL;
12280
12281 new_triggers.patterns = kcalloc(n_patterns,
12282 sizeof(new_triggers.patterns[0]),
12283 GFP_KERNEL);
12284 if (!new_triggers.patterns)
12285 return -ENOMEM;
12286
12287 new_triggers.n_patterns = n_patterns;
12288 i = 0;
12289
12290 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12291 rem) {
12292 u8 *mask_pat;
12293
12294 err = nla_parse_nested_deprecated(pat_tb,
12295 MAX_NL80211_PKTPAT,
12296 pat,
12297 nl80211_packet_pattern_policy,
12298 info->extack);
12299 if (err)
12300 goto error;
12301
12302 err = -EINVAL;
12303 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12304 !pat_tb[NL80211_PKTPAT_PATTERN])
12305 goto error;
12306 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12307 mask_len = DIV_ROUND_UP(pat_len, 8);
12308 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12309 goto error;
12310 if (pat_len > wowlan->pattern_max_len ||
12311 pat_len < wowlan->pattern_min_len)
12312 goto error;
12313
12314 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12315 pkt_offset = 0;
12316 else
12317 pkt_offset = nla_get_u32(
12318 pat_tb[NL80211_PKTPAT_OFFSET]);
12319 if (pkt_offset > wowlan->max_pkt_offset)
12320 goto error;
12321 new_triggers.patterns[i].pkt_offset = pkt_offset;
12322
12323 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12324 if (!mask_pat) {
12325 err = -ENOMEM;
12326 goto error;
12327 }
12328 new_triggers.patterns[i].mask = mask_pat;
12329 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12330 mask_len);
12331 mask_pat += mask_len;
12332 new_triggers.patterns[i].pattern = mask_pat;
12333 new_triggers.patterns[i].pattern_len = pat_len;
12334 memcpy(mask_pat,
12335 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12336 pat_len);
12337 i++;
12338 }
12339 }
12340
12341 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12342 regular = true;
12343 err = nl80211_parse_wowlan_tcp(
12344 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12345 &new_triggers);
12346 if (err)
12347 goto error;
12348 }
12349
12350 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12351 regular = true;
12352 err = nl80211_parse_wowlan_nd(
12353 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12354 &new_triggers);
12355 if (err)
12356 goto error;
12357 }
12358
12359 /* The 'any' trigger means the device continues operating more or less
12360 * as in its normal operation mode and wakes up the host on most of the
12361 * normal interrupts (like packet RX, ...)
12362 * It therefore makes little sense to combine with the more constrained
12363 * wakeup trigger modes.
12364 */
12365 if (new_triggers.any && regular) {
12366 err = -EINVAL;
12367 goto error;
12368 }
12369
12370 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12371 if (!ntrig) {
12372 err = -ENOMEM;
12373 goto error;
12374 }
12375 cfg80211_rdev_free_wowlan(rdev);
12376 rdev->wiphy.wowlan_config = ntrig;
12377
12378 set_wakeup:
12379 if (rdev->ops->set_wakeup &&
12380 prev_enabled != !!rdev->wiphy.wowlan_config)
12381 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12382
12383 return 0;
12384 error:
12385 for (i = 0; i < new_triggers.n_patterns; i++)
12386 kfree(new_triggers.patterns[i].mask);
12387 kfree(new_triggers.patterns);
12388 if (new_triggers.tcp && new_triggers.tcp->sock)
12389 sock_release(new_triggers.tcp->sock);
12390 kfree(new_triggers.tcp);
12391 kfree(new_triggers.nd_config);
12392 return err;
12393 }
12394 #endif
12395
nl80211_send_coalesce_rules(struct sk_buff * msg,struct cfg80211_registered_device * rdev)12396 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12397 struct cfg80211_registered_device *rdev)
12398 {
12399 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12400 int i, j, pat_len;
12401 struct cfg80211_coalesce_rules *rule;
12402
12403 if (!rdev->coalesce->n_rules)
12404 return 0;
12405
12406 nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12407 if (!nl_rules)
12408 return -ENOBUFS;
12409
12410 for (i = 0; i < rdev->coalesce->n_rules; i++) {
12411 nl_rule = nla_nest_start_noflag(msg, i + 1);
12412 if (!nl_rule)
12413 return -ENOBUFS;
12414
12415 rule = &rdev->coalesce->rules[i];
12416 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12417 rule->delay))
12418 return -ENOBUFS;
12419
12420 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12421 rule->condition))
12422 return -ENOBUFS;
12423
12424 nl_pats = nla_nest_start_noflag(msg,
12425 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12426 if (!nl_pats)
12427 return -ENOBUFS;
12428
12429 for (j = 0; j < rule->n_patterns; j++) {
12430 nl_pat = nla_nest_start_noflag(msg, j + 1);
12431 if (!nl_pat)
12432 return -ENOBUFS;
12433 pat_len = rule->patterns[j].pattern_len;
12434 if (nla_put(msg, NL80211_PKTPAT_MASK,
12435 DIV_ROUND_UP(pat_len, 8),
12436 rule->patterns[j].mask) ||
12437 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12438 rule->patterns[j].pattern) ||
12439 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12440 rule->patterns[j].pkt_offset))
12441 return -ENOBUFS;
12442 nla_nest_end(msg, nl_pat);
12443 }
12444 nla_nest_end(msg, nl_pats);
12445 nla_nest_end(msg, nl_rule);
12446 }
12447 nla_nest_end(msg, nl_rules);
12448
12449 return 0;
12450 }
12451
nl80211_get_coalesce(struct sk_buff * skb,struct genl_info * info)12452 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12453 {
12454 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12455 struct sk_buff *msg;
12456 void *hdr;
12457
12458 if (!rdev->wiphy.coalesce)
12459 return -EOPNOTSUPP;
12460
12461 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12462 if (!msg)
12463 return -ENOMEM;
12464
12465 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12466 NL80211_CMD_GET_COALESCE);
12467 if (!hdr)
12468 goto nla_put_failure;
12469
12470 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12471 goto nla_put_failure;
12472
12473 genlmsg_end(msg, hdr);
12474 return genlmsg_reply(msg, info);
12475
12476 nla_put_failure:
12477 nlmsg_free(msg);
12478 return -ENOBUFS;
12479 }
12480
cfg80211_rdev_free_coalesce(struct cfg80211_registered_device * rdev)12481 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12482 {
12483 struct cfg80211_coalesce *coalesce = rdev->coalesce;
12484 int i, j;
12485 struct cfg80211_coalesce_rules *rule;
12486
12487 if (!coalesce)
12488 return;
12489
12490 for (i = 0; i < coalesce->n_rules; i++) {
12491 rule = &coalesce->rules[i];
12492 for (j = 0; j < rule->n_patterns; j++)
12493 kfree(rule->patterns[j].mask);
12494 kfree(rule->patterns);
12495 }
12496 kfree(coalesce->rules);
12497 kfree(coalesce);
12498 rdev->coalesce = NULL;
12499 }
12500
nl80211_parse_coalesce_rule(struct cfg80211_registered_device * rdev,struct nlattr * rule,struct cfg80211_coalesce_rules * new_rule)12501 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12502 struct nlattr *rule,
12503 struct cfg80211_coalesce_rules *new_rule)
12504 {
12505 int err, i;
12506 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12507 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12508 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12509 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12510
12511 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12512 rule, nl80211_coalesce_policy, NULL);
12513 if (err)
12514 return err;
12515
12516 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12517 new_rule->delay =
12518 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12519 if (new_rule->delay > coalesce->max_delay)
12520 return -EINVAL;
12521
12522 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12523 new_rule->condition =
12524 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12525
12526 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12527 return -EINVAL;
12528
12529 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12530 rem)
12531 n_patterns++;
12532 if (n_patterns > coalesce->n_patterns)
12533 return -EINVAL;
12534
12535 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12536 GFP_KERNEL);
12537 if (!new_rule->patterns)
12538 return -ENOMEM;
12539
12540 new_rule->n_patterns = n_patterns;
12541 i = 0;
12542
12543 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12544 rem) {
12545 u8 *mask_pat;
12546
12547 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12548 pat,
12549 nl80211_packet_pattern_policy,
12550 NULL);
12551 if (err)
12552 return err;
12553
12554 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12555 !pat_tb[NL80211_PKTPAT_PATTERN])
12556 return -EINVAL;
12557 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12558 mask_len = DIV_ROUND_UP(pat_len, 8);
12559 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12560 return -EINVAL;
12561 if (pat_len > coalesce->pattern_max_len ||
12562 pat_len < coalesce->pattern_min_len)
12563 return -EINVAL;
12564
12565 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12566 pkt_offset = 0;
12567 else
12568 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12569 if (pkt_offset > coalesce->max_pkt_offset)
12570 return -EINVAL;
12571 new_rule->patterns[i].pkt_offset = pkt_offset;
12572
12573 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12574 if (!mask_pat)
12575 return -ENOMEM;
12576
12577 new_rule->patterns[i].mask = mask_pat;
12578 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12579 mask_len);
12580
12581 mask_pat += mask_len;
12582 new_rule->patterns[i].pattern = mask_pat;
12583 new_rule->patterns[i].pattern_len = pat_len;
12584 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12585 pat_len);
12586 i++;
12587 }
12588
12589 return 0;
12590 }
12591
nl80211_set_coalesce(struct sk_buff * skb,struct genl_info * info)12592 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12593 {
12594 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12595 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12596 struct cfg80211_coalesce new_coalesce = {};
12597 struct cfg80211_coalesce *n_coalesce;
12598 int err, rem_rule, n_rules = 0, i, j;
12599 struct nlattr *rule;
12600 struct cfg80211_coalesce_rules *tmp_rule;
12601
12602 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12603 return -EOPNOTSUPP;
12604
12605 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12606 cfg80211_rdev_free_coalesce(rdev);
12607 rdev_set_coalesce(rdev, NULL);
12608 return 0;
12609 }
12610
12611 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12612 rem_rule)
12613 n_rules++;
12614 if (n_rules > coalesce->n_rules)
12615 return -EINVAL;
12616
12617 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12618 GFP_KERNEL);
12619 if (!new_coalesce.rules)
12620 return -ENOMEM;
12621
12622 new_coalesce.n_rules = n_rules;
12623 i = 0;
12624
12625 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12626 rem_rule) {
12627 err = nl80211_parse_coalesce_rule(rdev, rule,
12628 &new_coalesce.rules[i]);
12629 if (err)
12630 goto error;
12631
12632 i++;
12633 }
12634
12635 err = rdev_set_coalesce(rdev, &new_coalesce);
12636 if (err)
12637 goto error;
12638
12639 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12640 if (!n_coalesce) {
12641 err = -ENOMEM;
12642 goto error;
12643 }
12644 cfg80211_rdev_free_coalesce(rdev);
12645 rdev->coalesce = n_coalesce;
12646
12647 return 0;
12648 error:
12649 for (i = 0; i < new_coalesce.n_rules; i++) {
12650 tmp_rule = &new_coalesce.rules[i];
12651 for (j = 0; j < tmp_rule->n_patterns; j++)
12652 kfree(tmp_rule->patterns[j].mask);
12653 kfree(tmp_rule->patterns);
12654 }
12655 kfree(new_coalesce.rules);
12656
12657 return err;
12658 }
12659
nl80211_set_rekey_data(struct sk_buff * skb,struct genl_info * info)12660 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12661 {
12662 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12663 struct net_device *dev = info->user_ptr[1];
12664 struct wireless_dev *wdev = dev->ieee80211_ptr;
12665 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12666 struct cfg80211_gtk_rekey_data rekey_data = {};
12667 int err;
12668
12669 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12670 return -EINVAL;
12671
12672 err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12673 info->attrs[NL80211_ATTR_REKEY_DATA],
12674 nl80211_rekey_policy, info->extack);
12675 if (err)
12676 return err;
12677
12678 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12679 !tb[NL80211_REKEY_DATA_KCK])
12680 return -EINVAL;
12681 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12682 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12683 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12684 return -ERANGE;
12685 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12686 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12687 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12688 return -ERANGE;
12689
12690 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12691 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12692 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12693 rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12694 rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12695 if (tb[NL80211_REKEY_DATA_AKM])
12696 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12697
12698 wdev_lock(wdev);
12699 if (!wdev->current_bss) {
12700 err = -ENOTCONN;
12701 goto out;
12702 }
12703
12704 if (!rdev->ops->set_rekey_data) {
12705 err = -EOPNOTSUPP;
12706 goto out;
12707 }
12708
12709 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12710 out:
12711 wdev_unlock(wdev);
12712 return err;
12713 }
12714
nl80211_register_unexpected_frame(struct sk_buff * skb,struct genl_info * info)12715 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12716 struct genl_info *info)
12717 {
12718 struct net_device *dev = info->user_ptr[1];
12719 struct wireless_dev *wdev = dev->ieee80211_ptr;
12720
12721 if (wdev->iftype != NL80211_IFTYPE_AP &&
12722 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12723 return -EINVAL;
12724
12725 if (wdev->ap_unexpected_nlportid)
12726 return -EBUSY;
12727
12728 wdev->ap_unexpected_nlportid = info->snd_portid;
12729 return 0;
12730 }
12731
nl80211_probe_client(struct sk_buff * skb,struct genl_info * info)12732 static int nl80211_probe_client(struct sk_buff *skb,
12733 struct genl_info *info)
12734 {
12735 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12736 struct net_device *dev = info->user_ptr[1];
12737 struct wireless_dev *wdev = dev->ieee80211_ptr;
12738 struct sk_buff *msg;
12739 void *hdr;
12740 const u8 *addr;
12741 u64 cookie;
12742 int err;
12743
12744 if (wdev->iftype != NL80211_IFTYPE_AP &&
12745 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12746 return -EOPNOTSUPP;
12747
12748 if (!info->attrs[NL80211_ATTR_MAC])
12749 return -EINVAL;
12750
12751 if (!rdev->ops->probe_client)
12752 return -EOPNOTSUPP;
12753
12754 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12755 if (!msg)
12756 return -ENOMEM;
12757
12758 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12759 NL80211_CMD_PROBE_CLIENT);
12760 if (!hdr) {
12761 err = -ENOBUFS;
12762 goto free_msg;
12763 }
12764
12765 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12766
12767 err = rdev_probe_client(rdev, dev, addr, &cookie);
12768 if (err)
12769 goto free_msg;
12770
12771 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12772 NL80211_ATTR_PAD))
12773 goto nla_put_failure;
12774
12775 genlmsg_end(msg, hdr);
12776
12777 return genlmsg_reply(msg, info);
12778
12779 nla_put_failure:
12780 err = -ENOBUFS;
12781 free_msg:
12782 nlmsg_free(msg);
12783 return err;
12784 }
12785
nl80211_register_beacons(struct sk_buff * skb,struct genl_info * info)12786 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12787 {
12788 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12789 struct cfg80211_beacon_registration *reg, *nreg;
12790 int rv;
12791
12792 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12793 return -EOPNOTSUPP;
12794
12795 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12796 if (!nreg)
12797 return -ENOMEM;
12798
12799 /* First, check if already registered. */
12800 spin_lock_bh(&rdev->beacon_registrations_lock);
12801 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12802 if (reg->nlportid == info->snd_portid) {
12803 rv = -EALREADY;
12804 goto out_err;
12805 }
12806 }
12807 /* Add it to the list */
12808 nreg->nlportid = info->snd_portid;
12809 list_add(&nreg->list, &rdev->beacon_registrations);
12810
12811 spin_unlock_bh(&rdev->beacon_registrations_lock);
12812
12813 return 0;
12814 out_err:
12815 spin_unlock_bh(&rdev->beacon_registrations_lock);
12816 kfree(nreg);
12817 return rv;
12818 }
12819
nl80211_start_p2p_device(struct sk_buff * skb,struct genl_info * info)12820 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12821 {
12822 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12823 struct wireless_dev *wdev = info->user_ptr[1];
12824 int err;
12825
12826 if (!rdev->ops->start_p2p_device)
12827 return -EOPNOTSUPP;
12828
12829 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12830 return -EOPNOTSUPP;
12831
12832 if (wdev_running(wdev))
12833 return 0;
12834
12835 if (rfkill_blocked(rdev->rfkill))
12836 return -ERFKILL;
12837
12838 err = rdev_start_p2p_device(rdev, wdev);
12839 if (err)
12840 return err;
12841
12842 wdev->is_running = true;
12843 rdev->opencount++;
12844
12845 return 0;
12846 }
12847
nl80211_stop_p2p_device(struct sk_buff * skb,struct genl_info * info)12848 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12849 {
12850 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12851 struct wireless_dev *wdev = info->user_ptr[1];
12852
12853 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12854 return -EOPNOTSUPP;
12855
12856 if (!rdev->ops->stop_p2p_device)
12857 return -EOPNOTSUPP;
12858
12859 cfg80211_stop_p2p_device(rdev, wdev);
12860
12861 return 0;
12862 }
12863
nl80211_start_nan(struct sk_buff * skb,struct genl_info * info)12864 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12865 {
12866 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12867 struct wireless_dev *wdev = info->user_ptr[1];
12868 struct cfg80211_nan_conf conf = {};
12869 int err;
12870
12871 if (wdev->iftype != NL80211_IFTYPE_NAN)
12872 return -EOPNOTSUPP;
12873
12874 if (wdev_running(wdev))
12875 return -EEXIST;
12876
12877 if (rfkill_blocked(rdev->rfkill))
12878 return -ERFKILL;
12879
12880 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12881 return -EINVAL;
12882
12883 conf.master_pref =
12884 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12885
12886 if (info->attrs[NL80211_ATTR_BANDS]) {
12887 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12888
12889 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12890 return -EOPNOTSUPP;
12891
12892 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12893 return -EINVAL;
12894
12895 conf.bands = bands;
12896 }
12897
12898 err = rdev_start_nan(rdev, wdev, &conf);
12899 if (err)
12900 return err;
12901
12902 wdev->is_running = true;
12903 rdev->opencount++;
12904
12905 return 0;
12906 }
12907
nl80211_stop_nan(struct sk_buff * skb,struct genl_info * info)12908 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12909 {
12910 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12911 struct wireless_dev *wdev = info->user_ptr[1];
12912
12913 if (wdev->iftype != NL80211_IFTYPE_NAN)
12914 return -EOPNOTSUPP;
12915
12916 cfg80211_stop_nan(rdev, wdev);
12917
12918 return 0;
12919 }
12920
validate_nan_filter(struct nlattr * filter_attr)12921 static int validate_nan_filter(struct nlattr *filter_attr)
12922 {
12923 struct nlattr *attr;
12924 int len = 0, n_entries = 0, rem;
12925
12926 nla_for_each_nested(attr, filter_attr, rem) {
12927 len += nla_len(attr);
12928 n_entries++;
12929 }
12930
12931 if (len >= U8_MAX)
12932 return -EINVAL;
12933
12934 return n_entries;
12935 }
12936
handle_nan_filter(struct nlattr * attr_filter,struct cfg80211_nan_func * func,bool tx)12937 static int handle_nan_filter(struct nlattr *attr_filter,
12938 struct cfg80211_nan_func *func,
12939 bool tx)
12940 {
12941 struct nlattr *attr;
12942 int n_entries, rem, i;
12943 struct cfg80211_nan_func_filter *filter;
12944
12945 n_entries = validate_nan_filter(attr_filter);
12946 if (n_entries < 0)
12947 return n_entries;
12948
12949 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12950
12951 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12952 if (!filter)
12953 return -ENOMEM;
12954
12955 i = 0;
12956 nla_for_each_nested(attr, attr_filter, rem) {
12957 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12958 if (!filter[i].filter)
12959 goto err;
12960
12961 filter[i].len = nla_len(attr);
12962 i++;
12963 }
12964 if (tx) {
12965 func->num_tx_filters = n_entries;
12966 func->tx_filters = filter;
12967 } else {
12968 func->num_rx_filters = n_entries;
12969 func->rx_filters = filter;
12970 }
12971
12972 return 0;
12973
12974 err:
12975 i = 0;
12976 nla_for_each_nested(attr, attr_filter, rem) {
12977 kfree(filter[i].filter);
12978 i++;
12979 }
12980 kfree(filter);
12981 return -ENOMEM;
12982 }
12983
nl80211_nan_add_func(struct sk_buff * skb,struct genl_info * info)12984 static int nl80211_nan_add_func(struct sk_buff *skb,
12985 struct genl_info *info)
12986 {
12987 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12988 struct wireless_dev *wdev = info->user_ptr[1];
12989 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12990 struct cfg80211_nan_func *func;
12991 struct sk_buff *msg = NULL;
12992 void *hdr = NULL;
12993 int err = 0;
12994
12995 if (wdev->iftype != NL80211_IFTYPE_NAN)
12996 return -EOPNOTSUPP;
12997
12998 if (!wdev_running(wdev))
12999 return -ENOTCONN;
13000
13001 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
13002 return -EINVAL;
13003
13004 err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
13005 info->attrs[NL80211_ATTR_NAN_FUNC],
13006 nl80211_nan_func_policy,
13007 info->extack);
13008 if (err)
13009 return err;
13010
13011 func = kzalloc(sizeof(*func), GFP_KERNEL);
13012 if (!func)
13013 return -ENOMEM;
13014
13015 func->cookie = cfg80211_assign_cookie(rdev);
13016
13017 if (!tb[NL80211_NAN_FUNC_TYPE]) {
13018 err = -EINVAL;
13019 goto out;
13020 }
13021
13022
13023 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
13024
13025 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
13026 err = -EINVAL;
13027 goto out;
13028 }
13029
13030 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
13031 sizeof(func->service_id));
13032
13033 func->close_range =
13034 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
13035
13036 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
13037 func->serv_spec_info_len =
13038 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
13039 func->serv_spec_info =
13040 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
13041 func->serv_spec_info_len,
13042 GFP_KERNEL);
13043 if (!func->serv_spec_info) {
13044 err = -ENOMEM;
13045 goto out;
13046 }
13047 }
13048
13049 if (tb[NL80211_NAN_FUNC_TTL])
13050 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
13051
13052 switch (func->type) {
13053 case NL80211_NAN_FUNC_PUBLISH:
13054 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
13055 err = -EINVAL;
13056 goto out;
13057 }
13058
13059 func->publish_type =
13060 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
13061 func->publish_bcast =
13062 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
13063
13064 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
13065 func->publish_bcast) {
13066 err = -EINVAL;
13067 goto out;
13068 }
13069 break;
13070 case NL80211_NAN_FUNC_SUBSCRIBE:
13071 func->subscribe_active =
13072 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
13073 break;
13074 case NL80211_NAN_FUNC_FOLLOW_UP:
13075 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
13076 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
13077 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
13078 err = -EINVAL;
13079 goto out;
13080 }
13081
13082 func->followup_id =
13083 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
13084 func->followup_reqid =
13085 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
13086 memcpy(func->followup_dest.addr,
13087 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
13088 sizeof(func->followup_dest.addr));
13089 if (func->ttl) {
13090 err = -EINVAL;
13091 goto out;
13092 }
13093 break;
13094 default:
13095 err = -EINVAL;
13096 goto out;
13097 }
13098
13099 if (tb[NL80211_NAN_FUNC_SRF]) {
13100 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
13101
13102 err = nla_parse_nested_deprecated(srf_tb,
13103 NL80211_NAN_SRF_ATTR_MAX,
13104 tb[NL80211_NAN_FUNC_SRF],
13105 nl80211_nan_srf_policy,
13106 info->extack);
13107 if (err)
13108 goto out;
13109
13110 func->srf_include =
13111 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
13112
13113 if (srf_tb[NL80211_NAN_SRF_BF]) {
13114 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
13115 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
13116 err = -EINVAL;
13117 goto out;
13118 }
13119
13120 func->srf_bf_len =
13121 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
13122 func->srf_bf =
13123 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
13124 func->srf_bf_len, GFP_KERNEL);
13125 if (!func->srf_bf) {
13126 err = -ENOMEM;
13127 goto out;
13128 }
13129
13130 func->srf_bf_idx =
13131 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
13132 } else {
13133 struct nlattr *attr, *mac_attr =
13134 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
13135 int n_entries, rem, i = 0;
13136
13137 if (!mac_attr) {
13138 err = -EINVAL;
13139 goto out;
13140 }
13141
13142 n_entries = validate_acl_mac_addrs(mac_attr);
13143 if (n_entries <= 0) {
13144 err = -EINVAL;
13145 goto out;
13146 }
13147
13148 func->srf_num_macs = n_entries;
13149 func->srf_macs =
13150 kcalloc(n_entries, sizeof(*func->srf_macs),
13151 GFP_KERNEL);
13152 if (!func->srf_macs) {
13153 err = -ENOMEM;
13154 goto out;
13155 }
13156
13157 nla_for_each_nested(attr, mac_attr, rem)
13158 memcpy(func->srf_macs[i++].addr, nla_data(attr),
13159 sizeof(*func->srf_macs));
13160 }
13161 }
13162
13163 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
13164 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
13165 func, true);
13166 if (err)
13167 goto out;
13168 }
13169
13170 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
13171 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
13172 func, false);
13173 if (err)
13174 goto out;
13175 }
13176
13177 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13178 if (!msg) {
13179 err = -ENOMEM;
13180 goto out;
13181 }
13182
13183 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13184 NL80211_CMD_ADD_NAN_FUNCTION);
13185 /* This can't really happen - we just allocated 4KB */
13186 if (WARN_ON(!hdr)) {
13187 err = -ENOMEM;
13188 goto out;
13189 }
13190
13191 err = rdev_add_nan_func(rdev, wdev, func);
13192 out:
13193 if (err < 0) {
13194 cfg80211_free_nan_func(func);
13195 nlmsg_free(msg);
13196 return err;
13197 }
13198
13199 /* propagate the instance id and cookie to userspace */
13200 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
13201 NL80211_ATTR_PAD))
13202 goto nla_put_failure;
13203
13204 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13205 if (!func_attr)
13206 goto nla_put_failure;
13207
13208 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
13209 func->instance_id))
13210 goto nla_put_failure;
13211
13212 nla_nest_end(msg, func_attr);
13213
13214 genlmsg_end(msg, hdr);
13215 return genlmsg_reply(msg, info);
13216
13217 nla_put_failure:
13218 nlmsg_free(msg);
13219 return -ENOBUFS;
13220 }
13221
nl80211_nan_del_func(struct sk_buff * skb,struct genl_info * info)13222 static int nl80211_nan_del_func(struct sk_buff *skb,
13223 struct genl_info *info)
13224 {
13225 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13226 struct wireless_dev *wdev = info->user_ptr[1];
13227 u64 cookie;
13228
13229 if (wdev->iftype != NL80211_IFTYPE_NAN)
13230 return -EOPNOTSUPP;
13231
13232 if (!wdev_running(wdev))
13233 return -ENOTCONN;
13234
13235 if (!info->attrs[NL80211_ATTR_COOKIE])
13236 return -EINVAL;
13237
13238 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
13239
13240 rdev_del_nan_func(rdev, wdev, cookie);
13241
13242 return 0;
13243 }
13244
nl80211_nan_change_config(struct sk_buff * skb,struct genl_info * info)13245 static int nl80211_nan_change_config(struct sk_buff *skb,
13246 struct genl_info *info)
13247 {
13248 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13249 struct wireless_dev *wdev = info->user_ptr[1];
13250 struct cfg80211_nan_conf conf = {};
13251 u32 changed = 0;
13252
13253 if (wdev->iftype != NL80211_IFTYPE_NAN)
13254 return -EOPNOTSUPP;
13255
13256 if (!wdev_running(wdev))
13257 return -ENOTCONN;
13258
13259 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
13260 conf.master_pref =
13261 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13262 if (conf.master_pref <= 1 || conf.master_pref == 255)
13263 return -EINVAL;
13264
13265 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
13266 }
13267
13268 if (info->attrs[NL80211_ATTR_BANDS]) {
13269 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13270
13271 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13272 return -EOPNOTSUPP;
13273
13274 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13275 return -EINVAL;
13276
13277 conf.bands = bands;
13278 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
13279 }
13280
13281 if (!changed)
13282 return -EINVAL;
13283
13284 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
13285 }
13286
cfg80211_nan_match(struct wireless_dev * wdev,struct cfg80211_nan_match_params * match,gfp_t gfp)13287 void cfg80211_nan_match(struct wireless_dev *wdev,
13288 struct cfg80211_nan_match_params *match, gfp_t gfp)
13289 {
13290 struct wiphy *wiphy = wdev->wiphy;
13291 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13292 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
13293 struct sk_buff *msg;
13294 void *hdr;
13295
13296 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
13297 return;
13298
13299 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13300 if (!msg)
13301 return;
13302
13303 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
13304 if (!hdr) {
13305 nlmsg_free(msg);
13306 return;
13307 }
13308
13309 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13310 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13311 wdev->netdev->ifindex)) ||
13312 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13313 NL80211_ATTR_PAD))
13314 goto nla_put_failure;
13315
13316 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
13317 NL80211_ATTR_PAD) ||
13318 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
13319 goto nla_put_failure;
13320
13321 match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
13322 if (!match_attr)
13323 goto nla_put_failure;
13324
13325 local_func_attr = nla_nest_start_noflag(msg,
13326 NL80211_NAN_MATCH_FUNC_LOCAL);
13327 if (!local_func_attr)
13328 goto nla_put_failure;
13329
13330 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13331 goto nla_put_failure;
13332
13333 nla_nest_end(msg, local_func_attr);
13334
13335 peer_func_attr = nla_nest_start_noflag(msg,
13336 NL80211_NAN_MATCH_FUNC_PEER);
13337 if (!peer_func_attr)
13338 goto nla_put_failure;
13339
13340 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13341 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13342 goto nla_put_failure;
13343
13344 if (match->info && match->info_len &&
13345 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13346 match->info))
13347 goto nla_put_failure;
13348
13349 nla_nest_end(msg, peer_func_attr);
13350 nla_nest_end(msg, match_attr);
13351 genlmsg_end(msg, hdr);
13352
13353 if (!wdev->owner_nlportid)
13354 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13355 msg, 0, NL80211_MCGRP_NAN, gfp);
13356 else
13357 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13358 wdev->owner_nlportid);
13359
13360 return;
13361
13362 nla_put_failure:
13363 nlmsg_free(msg);
13364 }
13365 EXPORT_SYMBOL(cfg80211_nan_match);
13366
cfg80211_nan_func_terminated(struct wireless_dev * wdev,u8 inst_id,enum nl80211_nan_func_term_reason reason,u64 cookie,gfp_t gfp)13367 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13368 u8 inst_id,
13369 enum nl80211_nan_func_term_reason reason,
13370 u64 cookie, gfp_t gfp)
13371 {
13372 struct wiphy *wiphy = wdev->wiphy;
13373 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13374 struct sk_buff *msg;
13375 struct nlattr *func_attr;
13376 void *hdr;
13377
13378 if (WARN_ON(!inst_id))
13379 return;
13380
13381 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13382 if (!msg)
13383 return;
13384
13385 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13386 if (!hdr) {
13387 nlmsg_free(msg);
13388 return;
13389 }
13390
13391 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13392 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13393 wdev->netdev->ifindex)) ||
13394 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13395 NL80211_ATTR_PAD))
13396 goto nla_put_failure;
13397
13398 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13399 NL80211_ATTR_PAD))
13400 goto nla_put_failure;
13401
13402 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13403 if (!func_attr)
13404 goto nla_put_failure;
13405
13406 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13407 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13408 goto nla_put_failure;
13409
13410 nla_nest_end(msg, func_attr);
13411 genlmsg_end(msg, hdr);
13412
13413 if (!wdev->owner_nlportid)
13414 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13415 msg, 0, NL80211_MCGRP_NAN, gfp);
13416 else
13417 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13418 wdev->owner_nlportid);
13419
13420 return;
13421
13422 nla_put_failure:
13423 nlmsg_free(msg);
13424 }
13425 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13426
nl80211_get_protocol_features(struct sk_buff * skb,struct genl_info * info)13427 static int nl80211_get_protocol_features(struct sk_buff *skb,
13428 struct genl_info *info)
13429 {
13430 void *hdr;
13431 struct sk_buff *msg;
13432
13433 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13434 if (!msg)
13435 return -ENOMEM;
13436
13437 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13438 NL80211_CMD_GET_PROTOCOL_FEATURES);
13439 if (!hdr)
13440 goto nla_put_failure;
13441
13442 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13443 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13444 goto nla_put_failure;
13445
13446 genlmsg_end(msg, hdr);
13447 return genlmsg_reply(msg, info);
13448
13449 nla_put_failure:
13450 kfree_skb(msg);
13451 return -ENOBUFS;
13452 }
13453
nl80211_update_ft_ies(struct sk_buff * skb,struct genl_info * info)13454 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13455 {
13456 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13457 struct cfg80211_update_ft_ies_params ft_params;
13458 struct net_device *dev = info->user_ptr[1];
13459
13460 if (!rdev->ops->update_ft_ies)
13461 return -EOPNOTSUPP;
13462
13463 if (!info->attrs[NL80211_ATTR_MDID] ||
13464 !info->attrs[NL80211_ATTR_IE])
13465 return -EINVAL;
13466
13467 memset(&ft_params, 0, sizeof(ft_params));
13468 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13469 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13470 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13471
13472 return rdev_update_ft_ies(rdev, dev, &ft_params);
13473 }
13474
nl80211_crit_protocol_start(struct sk_buff * skb,struct genl_info * info)13475 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13476 struct genl_info *info)
13477 {
13478 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13479 struct wireless_dev *wdev = info->user_ptr[1];
13480 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13481 u16 duration;
13482 int ret;
13483
13484 if (!rdev->ops->crit_proto_start)
13485 return -EOPNOTSUPP;
13486
13487 if (WARN_ON(!rdev->ops->crit_proto_stop))
13488 return -EINVAL;
13489
13490 if (rdev->crit_proto_nlportid)
13491 return -EBUSY;
13492
13493 /* determine protocol if provided */
13494 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13495 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13496
13497 if (proto >= NUM_NL80211_CRIT_PROTO)
13498 return -EINVAL;
13499
13500 /* timeout must be provided */
13501 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13502 return -EINVAL;
13503
13504 duration =
13505 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13506
13507 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13508 if (!ret)
13509 rdev->crit_proto_nlportid = info->snd_portid;
13510
13511 return ret;
13512 }
13513
nl80211_crit_protocol_stop(struct sk_buff * skb,struct genl_info * info)13514 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13515 struct genl_info *info)
13516 {
13517 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13518 struct wireless_dev *wdev = info->user_ptr[1];
13519
13520 if (!rdev->ops->crit_proto_stop)
13521 return -EOPNOTSUPP;
13522
13523 if (rdev->crit_proto_nlportid) {
13524 rdev->crit_proto_nlportid = 0;
13525 rdev_crit_proto_stop(rdev, wdev);
13526 }
13527 return 0;
13528 }
13529
nl80211_vendor_check_policy(const struct wiphy_vendor_command * vcmd,struct nlattr * attr,struct netlink_ext_ack * extack)13530 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13531 struct nlattr *attr,
13532 struct netlink_ext_ack *extack)
13533 {
13534 if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13535 if (attr->nla_type & NLA_F_NESTED) {
13536 NL_SET_ERR_MSG_ATTR(extack, attr,
13537 "unexpected nested data");
13538 return -EINVAL;
13539 }
13540
13541 return 0;
13542 }
13543
13544 if (!(attr->nla_type & NLA_F_NESTED)) {
13545 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13546 return -EINVAL;
13547 }
13548
13549 return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13550 }
13551
nl80211_vendor_cmd(struct sk_buff * skb,struct genl_info * info)13552 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13553 {
13554 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13555 struct wireless_dev *wdev =
13556 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13557 int i, err;
13558 u32 vid, subcmd;
13559
13560 if (!rdev->wiphy.vendor_commands)
13561 return -EOPNOTSUPP;
13562
13563 if (IS_ERR(wdev)) {
13564 err = PTR_ERR(wdev);
13565 if (err != -EINVAL)
13566 return err;
13567 wdev = NULL;
13568 } else if (wdev->wiphy != &rdev->wiphy) {
13569 return -EINVAL;
13570 }
13571
13572 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13573 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13574 return -EINVAL;
13575
13576 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13577 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13578 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13579 const struct wiphy_vendor_command *vcmd;
13580 void *data = NULL;
13581 int len = 0;
13582
13583 vcmd = &rdev->wiphy.vendor_commands[i];
13584
13585 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13586 continue;
13587
13588 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13589 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13590 if (!wdev)
13591 return -EINVAL;
13592 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13593 !wdev->netdev)
13594 return -EINVAL;
13595
13596 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13597 if (!wdev_running(wdev))
13598 return -ENETDOWN;
13599 }
13600 } else {
13601 wdev = NULL;
13602 }
13603
13604 if (!vcmd->doit)
13605 return -EOPNOTSUPP;
13606
13607 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13608 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13609 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13610
13611 err = nl80211_vendor_check_policy(vcmd,
13612 info->attrs[NL80211_ATTR_VENDOR_DATA],
13613 info->extack);
13614 if (err)
13615 return err;
13616 }
13617
13618 rdev->cur_cmd_info = info;
13619 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13620 rdev->cur_cmd_info = NULL;
13621 return err;
13622 }
13623
13624 return -EOPNOTSUPP;
13625 }
13626
nl80211_prepare_vendor_dump(struct sk_buff * skb,struct netlink_callback * cb,struct cfg80211_registered_device ** rdev,struct wireless_dev ** wdev)13627 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13628 struct netlink_callback *cb,
13629 struct cfg80211_registered_device **rdev,
13630 struct wireless_dev **wdev)
13631 {
13632 struct nlattr **attrbuf;
13633 u32 vid, subcmd;
13634 unsigned int i;
13635 int vcmd_idx = -1;
13636 int err;
13637 void *data = NULL;
13638 unsigned int data_len = 0;
13639
13640 if (cb->args[0]) {
13641 /* subtract the 1 again here */
13642 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13643 struct wireless_dev *tmp;
13644
13645 if (!wiphy)
13646 return -ENODEV;
13647 *rdev = wiphy_to_rdev(wiphy);
13648 *wdev = NULL;
13649
13650 if (cb->args[1]) {
13651 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13652 if (tmp->identifier == cb->args[1] - 1) {
13653 *wdev = tmp;
13654 break;
13655 }
13656 }
13657 }
13658
13659 /* keep rtnl locked in successful case */
13660 return 0;
13661 }
13662
13663 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13664 if (!attrbuf)
13665 return -ENOMEM;
13666
13667 err = nlmsg_parse_deprecated(cb->nlh,
13668 GENL_HDRLEN + nl80211_fam.hdrsize,
13669 attrbuf, nl80211_fam.maxattr,
13670 nl80211_policy, NULL);
13671 if (err)
13672 goto out;
13673
13674 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13675 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13676 err = -EINVAL;
13677 goto out;
13678 }
13679
13680 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13681 if (IS_ERR(*wdev))
13682 *wdev = NULL;
13683
13684 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13685 if (IS_ERR(*rdev)) {
13686 err = PTR_ERR(*rdev);
13687 goto out;
13688 }
13689
13690 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13691 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13692
13693 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13694 const struct wiphy_vendor_command *vcmd;
13695
13696 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13697
13698 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13699 continue;
13700
13701 if (!vcmd->dumpit) {
13702 err = -EOPNOTSUPP;
13703 goto out;
13704 }
13705
13706 vcmd_idx = i;
13707 break;
13708 }
13709
13710 if (vcmd_idx < 0) {
13711 err = -EOPNOTSUPP;
13712 goto out;
13713 }
13714
13715 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13716 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13717 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13718
13719 err = nl80211_vendor_check_policy(
13720 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13721 attrbuf[NL80211_ATTR_VENDOR_DATA],
13722 cb->extack);
13723 if (err)
13724 goto out;
13725 }
13726
13727 /* 0 is the first index - add 1 to parse only once */
13728 cb->args[0] = (*rdev)->wiphy_idx + 1;
13729 /* add 1 to know if it was NULL */
13730 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13731 cb->args[2] = vcmd_idx;
13732 cb->args[3] = (unsigned long)data;
13733 cb->args[4] = data_len;
13734
13735 /* keep rtnl locked in successful case */
13736 err = 0;
13737 out:
13738 kfree(attrbuf);
13739 return err;
13740 }
13741
nl80211_vendor_cmd_dump(struct sk_buff * skb,struct netlink_callback * cb)13742 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13743 struct netlink_callback *cb)
13744 {
13745 struct cfg80211_registered_device *rdev;
13746 struct wireless_dev *wdev;
13747 unsigned int vcmd_idx;
13748 const struct wiphy_vendor_command *vcmd;
13749 void *data;
13750 int data_len;
13751 int err;
13752 struct nlattr *vendor_data;
13753
13754 rtnl_lock();
13755 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13756 if (err)
13757 goto out;
13758
13759 vcmd_idx = cb->args[2];
13760 data = (void *)cb->args[3];
13761 data_len = cb->args[4];
13762 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13763
13764 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13765 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13766 if (!wdev) {
13767 err = -EINVAL;
13768 goto out;
13769 }
13770 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13771 !wdev->netdev) {
13772 err = -EINVAL;
13773 goto out;
13774 }
13775
13776 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13777 if (!wdev_running(wdev)) {
13778 err = -ENETDOWN;
13779 goto out;
13780 }
13781 }
13782 }
13783
13784 while (1) {
13785 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13786 cb->nlh->nlmsg_seq, NLM_F_MULTI,
13787 NL80211_CMD_VENDOR);
13788 if (!hdr)
13789 break;
13790
13791 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13792 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13793 wdev_id(wdev),
13794 NL80211_ATTR_PAD))) {
13795 genlmsg_cancel(skb, hdr);
13796 break;
13797 }
13798
13799 vendor_data = nla_nest_start_noflag(skb,
13800 NL80211_ATTR_VENDOR_DATA);
13801 if (!vendor_data) {
13802 genlmsg_cancel(skb, hdr);
13803 break;
13804 }
13805
13806 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13807 (unsigned long *)&cb->args[5]);
13808 nla_nest_end(skb, vendor_data);
13809
13810 if (err == -ENOBUFS || err == -ENOENT) {
13811 genlmsg_cancel(skb, hdr);
13812 break;
13813 } else if (err <= 0) {
13814 genlmsg_cancel(skb, hdr);
13815 goto out;
13816 }
13817
13818 genlmsg_end(skb, hdr);
13819 }
13820
13821 err = skb->len;
13822 out:
13823 rtnl_unlock();
13824 return err;
13825 }
13826
__cfg80211_alloc_reply_skb(struct wiphy * wiphy,enum nl80211_commands cmd,enum nl80211_attrs attr,int approxlen)13827 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13828 enum nl80211_commands cmd,
13829 enum nl80211_attrs attr,
13830 int approxlen)
13831 {
13832 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13833
13834 if (WARN_ON(!rdev->cur_cmd_info))
13835 return NULL;
13836
13837 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13838 rdev->cur_cmd_info->snd_portid,
13839 rdev->cur_cmd_info->snd_seq,
13840 cmd, attr, NULL, GFP_KERNEL);
13841 }
13842 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13843
cfg80211_vendor_cmd_reply(struct sk_buff * skb)13844 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13845 {
13846 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13847 void *hdr = ((void **)skb->cb)[1];
13848 struct nlattr *data = ((void **)skb->cb)[2];
13849
13850 /* clear CB data for netlink core to own from now on */
13851 memset(skb->cb, 0, sizeof(skb->cb));
13852
13853 if (WARN_ON(!rdev->cur_cmd_info)) {
13854 kfree_skb(skb);
13855 return -EINVAL;
13856 }
13857
13858 nla_nest_end(skb, data);
13859 genlmsg_end(skb, hdr);
13860 return genlmsg_reply(skb, rdev->cur_cmd_info);
13861 }
13862 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13863
cfg80211_vendor_cmd_get_sender(struct wiphy * wiphy)13864 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13865 {
13866 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13867
13868 if (WARN_ON(!rdev->cur_cmd_info))
13869 return 0;
13870
13871 return rdev->cur_cmd_info->snd_portid;
13872 }
13873 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13874
nl80211_set_qos_map(struct sk_buff * skb,struct genl_info * info)13875 static int nl80211_set_qos_map(struct sk_buff *skb,
13876 struct genl_info *info)
13877 {
13878 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13879 struct cfg80211_qos_map *qos_map = NULL;
13880 struct net_device *dev = info->user_ptr[1];
13881 u8 *pos, len, num_des, des_len, des;
13882 int ret;
13883
13884 if (!rdev->ops->set_qos_map)
13885 return -EOPNOTSUPP;
13886
13887 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13888 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13889 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13890
13891 if (len % 2)
13892 return -EINVAL;
13893
13894 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13895 if (!qos_map)
13896 return -ENOMEM;
13897
13898 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13899 if (num_des) {
13900 des_len = num_des *
13901 sizeof(struct cfg80211_dscp_exception);
13902 memcpy(qos_map->dscp_exception, pos, des_len);
13903 qos_map->num_des = num_des;
13904 for (des = 0; des < num_des; des++) {
13905 if (qos_map->dscp_exception[des].up > 7) {
13906 kfree(qos_map);
13907 return -EINVAL;
13908 }
13909 }
13910 pos += des_len;
13911 }
13912 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13913 }
13914
13915 wdev_lock(dev->ieee80211_ptr);
13916 ret = nl80211_key_allowed(dev->ieee80211_ptr);
13917 if (!ret)
13918 ret = rdev_set_qos_map(rdev, dev, qos_map);
13919 wdev_unlock(dev->ieee80211_ptr);
13920
13921 kfree(qos_map);
13922 return ret;
13923 }
13924
nl80211_add_tx_ts(struct sk_buff * skb,struct genl_info * info)13925 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13926 {
13927 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13928 struct net_device *dev = info->user_ptr[1];
13929 struct wireless_dev *wdev = dev->ieee80211_ptr;
13930 const u8 *peer;
13931 u8 tsid, up;
13932 u16 admitted_time = 0;
13933 int err;
13934
13935 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13936 return -EOPNOTSUPP;
13937
13938 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13939 !info->attrs[NL80211_ATTR_USER_PRIO])
13940 return -EINVAL;
13941
13942 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13943 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13944
13945 /* WMM uses TIDs 0-7 even for TSPEC */
13946 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13947 /* TODO: handle 802.11 TSPEC/admission control
13948 * need more attributes for that (e.g. BA session requirement);
13949 * change the WMM adminssion test above to allow both then
13950 */
13951 return -EINVAL;
13952 }
13953
13954 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13955
13956 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13957 admitted_time =
13958 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13959 if (!admitted_time)
13960 return -EINVAL;
13961 }
13962
13963 wdev_lock(wdev);
13964 switch (wdev->iftype) {
13965 case NL80211_IFTYPE_STATION:
13966 case NL80211_IFTYPE_P2P_CLIENT:
13967 if (wdev->current_bss)
13968 break;
13969 err = -ENOTCONN;
13970 goto out;
13971 default:
13972 err = -EOPNOTSUPP;
13973 goto out;
13974 }
13975
13976 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13977
13978 out:
13979 wdev_unlock(wdev);
13980 return err;
13981 }
13982
nl80211_del_tx_ts(struct sk_buff * skb,struct genl_info * info)13983 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13984 {
13985 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13986 struct net_device *dev = info->user_ptr[1];
13987 struct wireless_dev *wdev = dev->ieee80211_ptr;
13988 const u8 *peer;
13989 u8 tsid;
13990 int err;
13991
13992 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13993 return -EINVAL;
13994
13995 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13996 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13997
13998 wdev_lock(wdev);
13999 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
14000 wdev_unlock(wdev);
14001
14002 return err;
14003 }
14004
nl80211_tdls_channel_switch(struct sk_buff * skb,struct genl_info * info)14005 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
14006 struct genl_info *info)
14007 {
14008 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14009 struct net_device *dev = info->user_ptr[1];
14010 struct wireless_dev *wdev = dev->ieee80211_ptr;
14011 struct cfg80211_chan_def chandef = {};
14012 const u8 *addr;
14013 u8 oper_class;
14014 int err;
14015
14016 if (!rdev->ops->tdls_channel_switch ||
14017 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14018 return -EOPNOTSUPP;
14019
14020 switch (dev->ieee80211_ptr->iftype) {
14021 case NL80211_IFTYPE_STATION:
14022 case NL80211_IFTYPE_P2P_CLIENT:
14023 break;
14024 default:
14025 return -EOPNOTSUPP;
14026 }
14027
14028 if (!info->attrs[NL80211_ATTR_MAC] ||
14029 !info->attrs[NL80211_ATTR_OPER_CLASS])
14030 return -EINVAL;
14031
14032 err = nl80211_parse_chandef(rdev, info, &chandef);
14033 if (err)
14034 return err;
14035
14036 /*
14037 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
14038 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
14039 * specification is not defined for them.
14040 */
14041 if (chandef.chan->band == NL80211_BAND_2GHZ &&
14042 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
14043 chandef.width != NL80211_CHAN_WIDTH_20)
14044 return -EINVAL;
14045
14046 /* we will be active on the TDLS link */
14047 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
14048 wdev->iftype))
14049 return -EINVAL;
14050
14051 /* don't allow switching to DFS channels */
14052 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
14053 return -EINVAL;
14054
14055 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14056 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
14057
14058 wdev_lock(wdev);
14059 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
14060 wdev_unlock(wdev);
14061
14062 return err;
14063 }
14064
nl80211_tdls_cancel_channel_switch(struct sk_buff * skb,struct genl_info * info)14065 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
14066 struct genl_info *info)
14067 {
14068 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14069 struct net_device *dev = info->user_ptr[1];
14070 struct wireless_dev *wdev = dev->ieee80211_ptr;
14071 const u8 *addr;
14072
14073 if (!rdev->ops->tdls_channel_switch ||
14074 !rdev->ops->tdls_cancel_channel_switch ||
14075 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14076 return -EOPNOTSUPP;
14077
14078 switch (dev->ieee80211_ptr->iftype) {
14079 case NL80211_IFTYPE_STATION:
14080 case NL80211_IFTYPE_P2P_CLIENT:
14081 break;
14082 default:
14083 return -EOPNOTSUPP;
14084 }
14085
14086 if (!info->attrs[NL80211_ATTR_MAC])
14087 return -EINVAL;
14088
14089 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14090
14091 wdev_lock(wdev);
14092 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
14093 wdev_unlock(wdev);
14094
14095 return 0;
14096 }
14097
nl80211_set_multicast_to_unicast(struct sk_buff * skb,struct genl_info * info)14098 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
14099 struct genl_info *info)
14100 {
14101 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14102 struct net_device *dev = info->user_ptr[1];
14103 struct wireless_dev *wdev = dev->ieee80211_ptr;
14104 const struct nlattr *nla;
14105 bool enabled;
14106
14107 if (!rdev->ops->set_multicast_to_unicast)
14108 return -EOPNOTSUPP;
14109
14110 if (wdev->iftype != NL80211_IFTYPE_AP &&
14111 wdev->iftype != NL80211_IFTYPE_P2P_GO)
14112 return -EOPNOTSUPP;
14113
14114 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
14115 enabled = nla_get_flag(nla);
14116
14117 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
14118 }
14119
nl80211_set_pmk(struct sk_buff * skb,struct genl_info * info)14120 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
14121 {
14122 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14123 struct net_device *dev = info->user_ptr[1];
14124 struct wireless_dev *wdev = dev->ieee80211_ptr;
14125 struct cfg80211_pmk_conf pmk_conf = {};
14126 int ret;
14127
14128 if (wdev->iftype != NL80211_IFTYPE_STATION &&
14129 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14130 return -EOPNOTSUPP;
14131
14132 if (!wiphy_ext_feature_isset(&rdev->wiphy,
14133 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14134 return -EOPNOTSUPP;
14135
14136 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
14137 return -EINVAL;
14138
14139 wdev_lock(wdev);
14140 if (!wdev->current_bss) {
14141 ret = -ENOTCONN;
14142 goto out;
14143 }
14144
14145 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14146 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
14147 ret = -EINVAL;
14148 goto out;
14149 }
14150
14151 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
14152 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
14153 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
14154 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
14155 ret = -EINVAL;
14156 goto out;
14157 }
14158
14159 if (info->attrs[NL80211_ATTR_PMKR0_NAME])
14160 pmk_conf.pmk_r0_name =
14161 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
14162
14163 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
14164 out:
14165 wdev_unlock(wdev);
14166 return ret;
14167 }
14168
nl80211_del_pmk(struct sk_buff * skb,struct genl_info * info)14169 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
14170 {
14171 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14172 struct net_device *dev = info->user_ptr[1];
14173 struct wireless_dev *wdev = dev->ieee80211_ptr;
14174 const u8 *aa;
14175 int ret;
14176
14177 if (wdev->iftype != NL80211_IFTYPE_STATION &&
14178 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14179 return -EOPNOTSUPP;
14180
14181 if (!wiphy_ext_feature_isset(&rdev->wiphy,
14182 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14183 return -EOPNOTSUPP;
14184
14185 if (!info->attrs[NL80211_ATTR_MAC])
14186 return -EINVAL;
14187
14188 wdev_lock(wdev);
14189 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14190 ret = rdev_del_pmk(rdev, dev, aa);
14191 wdev_unlock(wdev);
14192
14193 return ret;
14194 }
14195
nl80211_external_auth(struct sk_buff * skb,struct genl_info * info)14196 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
14197 {
14198 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14199 struct net_device *dev = info->user_ptr[1];
14200 struct cfg80211_external_auth_params params;
14201
14202 if (!rdev->ops->external_auth)
14203 return -EOPNOTSUPP;
14204
14205 if (!info->attrs[NL80211_ATTR_SSID] &&
14206 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
14207 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
14208 return -EINVAL;
14209
14210 if (!info->attrs[NL80211_ATTR_BSSID])
14211 return -EINVAL;
14212
14213 if (!info->attrs[NL80211_ATTR_STATUS_CODE])
14214 return -EINVAL;
14215
14216 memset(¶ms, 0, sizeof(params));
14217
14218 if (info->attrs[NL80211_ATTR_SSID]) {
14219 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
14220 if (params.ssid.ssid_len == 0)
14221 return -EINVAL;
14222 memcpy(params.ssid.ssid,
14223 nla_data(info->attrs[NL80211_ATTR_SSID]),
14224 params.ssid.ssid_len);
14225 }
14226
14227 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
14228 ETH_ALEN);
14229
14230 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14231
14232 if (info->attrs[NL80211_ATTR_PMKID])
14233 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
14234
14235 return rdev_external_auth(rdev, dev, ¶ms);
14236 }
14237
nl80211_tx_control_port(struct sk_buff * skb,struct genl_info * info)14238 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
14239 {
14240 bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
14241 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14242 struct net_device *dev = info->user_ptr[1];
14243 struct wireless_dev *wdev = dev->ieee80211_ptr;
14244 const u8 *buf;
14245 size_t len;
14246 u8 *dest;
14247 u16 proto;
14248 bool noencrypt;
14249 u64 cookie = 0;
14250 int err;
14251
14252 if (!wiphy_ext_feature_isset(&rdev->wiphy,
14253 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
14254 return -EOPNOTSUPP;
14255
14256 if (!rdev->ops->tx_control_port)
14257 return -EOPNOTSUPP;
14258
14259 if (!info->attrs[NL80211_ATTR_FRAME] ||
14260 !info->attrs[NL80211_ATTR_MAC] ||
14261 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
14262 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
14263 return -EINVAL;
14264 }
14265
14266 wdev_lock(wdev);
14267
14268 switch (wdev->iftype) {
14269 case NL80211_IFTYPE_AP:
14270 case NL80211_IFTYPE_P2P_GO:
14271 case NL80211_IFTYPE_MESH_POINT:
14272 break;
14273 case NL80211_IFTYPE_ADHOC:
14274 case NL80211_IFTYPE_STATION:
14275 case NL80211_IFTYPE_P2P_CLIENT:
14276 if (wdev->current_bss)
14277 break;
14278 err = -ENOTCONN;
14279 goto out;
14280 default:
14281 err = -EOPNOTSUPP;
14282 goto out;
14283 }
14284
14285 wdev_unlock(wdev);
14286
14287 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14288 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14289 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14290 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
14291 noencrypt =
14292 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
14293
14294 err = rdev_tx_control_port(rdev, dev, buf, len,
14295 dest, cpu_to_be16(proto), noencrypt,
14296 dont_wait_for_ack ? NULL : &cookie);
14297 if (!err && !dont_wait_for_ack)
14298 nl_set_extack_cookie_u64(info->extack, cookie);
14299 return err;
14300 out:
14301 wdev_unlock(wdev);
14302 return err;
14303 }
14304
nl80211_get_ftm_responder_stats(struct sk_buff * skb,struct genl_info * info)14305 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
14306 struct genl_info *info)
14307 {
14308 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14309 struct net_device *dev = info->user_ptr[1];
14310 struct wireless_dev *wdev = dev->ieee80211_ptr;
14311 struct cfg80211_ftm_responder_stats ftm_stats = {};
14312 struct sk_buff *msg;
14313 void *hdr;
14314 struct nlattr *ftm_stats_attr;
14315 int err;
14316
14317 if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14318 return -EOPNOTSUPP;
14319
14320 err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14321 if (err)
14322 return err;
14323
14324 if (!ftm_stats.filled)
14325 return -ENODATA;
14326
14327 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14328 if (!msg)
14329 return -ENOMEM;
14330
14331 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14332 NL80211_CMD_GET_FTM_RESPONDER_STATS);
14333 if (!hdr)
14334 goto nla_put_failure;
14335
14336 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14337 goto nla_put_failure;
14338
14339 ftm_stats_attr = nla_nest_start_noflag(msg,
14340 NL80211_ATTR_FTM_RESPONDER_STATS);
14341 if (!ftm_stats_attr)
14342 goto nla_put_failure;
14343
14344 #define SET_FTM(field, name, type) \
14345 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14346 nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \
14347 ftm_stats.field)) \
14348 goto nla_put_failure; } while (0)
14349 #define SET_FTM_U64(field, name) \
14350 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14351 nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \
14352 ftm_stats.field, NL80211_FTM_STATS_PAD)) \
14353 goto nla_put_failure; } while (0)
14354
14355 SET_FTM(success_num, SUCCESS_NUM, u32);
14356 SET_FTM(partial_num, PARTIAL_NUM, u32);
14357 SET_FTM(failed_num, FAILED_NUM, u32);
14358 SET_FTM(asap_num, ASAP_NUM, u32);
14359 SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14360 SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14361 SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14362 SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14363 SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14364 #undef SET_FTM
14365
14366 nla_nest_end(msg, ftm_stats_attr);
14367
14368 genlmsg_end(msg, hdr);
14369 return genlmsg_reply(msg, info);
14370
14371 nla_put_failure:
14372 nlmsg_free(msg);
14373 return -ENOBUFS;
14374 }
14375
nl80211_update_owe_info(struct sk_buff * skb,struct genl_info * info)14376 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14377 {
14378 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14379 struct cfg80211_update_owe_info owe_info;
14380 struct net_device *dev = info->user_ptr[1];
14381
14382 if (!rdev->ops->update_owe_info)
14383 return -EOPNOTSUPP;
14384
14385 if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14386 !info->attrs[NL80211_ATTR_MAC])
14387 return -EINVAL;
14388
14389 memset(&owe_info, 0, sizeof(owe_info));
14390 owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14391 nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14392
14393 if (info->attrs[NL80211_ATTR_IE]) {
14394 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14395 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14396 }
14397
14398 return rdev_update_owe_info(rdev, dev, &owe_info);
14399 }
14400
nl80211_probe_mesh_link(struct sk_buff * skb,struct genl_info * info)14401 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14402 {
14403 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14404 struct net_device *dev = info->user_ptr[1];
14405 struct wireless_dev *wdev = dev->ieee80211_ptr;
14406 struct station_info sinfo = {};
14407 const u8 *buf;
14408 size_t len;
14409 u8 *dest;
14410 int err;
14411
14412 if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14413 return -EOPNOTSUPP;
14414
14415 if (!info->attrs[NL80211_ATTR_MAC] ||
14416 !info->attrs[NL80211_ATTR_FRAME]) {
14417 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14418 return -EINVAL;
14419 }
14420
14421 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14422 return -EOPNOTSUPP;
14423
14424 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14425 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14426 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14427
14428 if (len < sizeof(struct ethhdr))
14429 return -EINVAL;
14430
14431 if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14432 !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14433 return -EINVAL;
14434
14435 err = rdev_get_station(rdev, dev, dest, &sinfo);
14436 if (err)
14437 return err;
14438
14439 cfg80211_sinfo_release_content(&sinfo);
14440
14441 return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14442 }
14443
parse_tid_conf(struct cfg80211_registered_device * rdev,struct nlattr * attrs[],struct net_device * dev,struct cfg80211_tid_cfg * tid_conf,struct genl_info * info,const u8 * peer)14444 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14445 struct nlattr *attrs[], struct net_device *dev,
14446 struct cfg80211_tid_cfg *tid_conf,
14447 struct genl_info *info, const u8 *peer)
14448 {
14449 struct netlink_ext_ack *extack = info->extack;
14450 u64 mask;
14451 int err;
14452
14453 if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14454 return -EINVAL;
14455
14456 tid_conf->config_override =
14457 nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14458 tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14459
14460 if (tid_conf->config_override) {
14461 if (rdev->ops->reset_tid_config) {
14462 err = rdev_reset_tid_config(rdev, dev, peer,
14463 tid_conf->tids);
14464 if (err)
14465 return err;
14466 } else {
14467 return -EINVAL;
14468 }
14469 }
14470
14471 if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14472 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14473 tid_conf->noack =
14474 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14475 }
14476
14477 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14478 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14479 tid_conf->retry_short =
14480 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14481
14482 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14483 return -EINVAL;
14484 }
14485
14486 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14487 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14488 tid_conf->retry_long =
14489 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14490
14491 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14492 return -EINVAL;
14493 }
14494
14495 if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14496 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14497 tid_conf->ampdu =
14498 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14499 }
14500
14501 if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14502 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14503 tid_conf->rtscts =
14504 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14505 }
14506
14507 if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14508 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14509 tid_conf->amsdu =
14510 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14511 }
14512
14513 if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14514 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14515
14516 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14517
14518 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14519 attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14520 err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14521 &tid_conf->txrate_mask, dev);
14522 if (err)
14523 return err;
14524
14525 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14526 }
14527 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14528 }
14529
14530 if (peer)
14531 mask = rdev->wiphy.tid_config_support.peer;
14532 else
14533 mask = rdev->wiphy.tid_config_support.vif;
14534
14535 if (tid_conf->mask & ~mask) {
14536 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14537 return -ENOTSUPP;
14538 }
14539
14540 return 0;
14541 }
14542
nl80211_set_tid_config(struct sk_buff * skb,struct genl_info * info)14543 static int nl80211_set_tid_config(struct sk_buff *skb,
14544 struct genl_info *info)
14545 {
14546 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14547 struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14548 struct net_device *dev = info->user_ptr[1];
14549 struct cfg80211_tid_config *tid_config;
14550 struct nlattr *tid;
14551 int conf_idx = 0, rem_conf;
14552 int ret = -EINVAL;
14553 u32 num_conf = 0;
14554
14555 if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14556 return -EINVAL;
14557
14558 if (!rdev->ops->set_tid_config)
14559 return -EOPNOTSUPP;
14560
14561 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14562 rem_conf)
14563 num_conf++;
14564
14565 tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14566 GFP_KERNEL);
14567 if (!tid_config)
14568 return -ENOMEM;
14569
14570 tid_config->n_tid_conf = num_conf;
14571
14572 if (info->attrs[NL80211_ATTR_MAC])
14573 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14574
14575 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14576 rem_conf) {
14577 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14578 tid, NULL, NULL);
14579
14580 if (ret)
14581 goto bad_tid_conf;
14582
14583 ret = parse_tid_conf(rdev, attrs, dev,
14584 &tid_config->tid_conf[conf_idx],
14585 info, tid_config->peer);
14586 if (ret)
14587 goto bad_tid_conf;
14588
14589 conf_idx++;
14590 }
14591
14592 ret = rdev_set_tid_config(rdev, dev, tid_config);
14593
14594 bad_tid_conf:
14595 kfree(tid_config);
14596 return ret;
14597 }
14598
14599 #define NL80211_FLAG_NEED_WIPHY 0x01
14600 #define NL80211_FLAG_NEED_NETDEV 0x02
14601 #define NL80211_FLAG_NEED_RTNL 0x04
14602 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
14603 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
14604 NL80211_FLAG_CHECK_NETDEV_UP)
14605 #define NL80211_FLAG_NEED_WDEV 0x10
14606 /* If a netdev is associated, it must be UP, P2P must be started */
14607 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
14608 NL80211_FLAG_CHECK_NETDEV_UP)
14609 #define NL80211_FLAG_CLEAR_SKB 0x20
14610
nl80211_pre_doit(const struct genl_ops * ops,struct sk_buff * skb,struct genl_info * info)14611 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14612 struct genl_info *info)
14613 {
14614 struct cfg80211_registered_device *rdev;
14615 struct wireless_dev *wdev;
14616 struct net_device *dev;
14617 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14618
14619 if (rtnl)
14620 rtnl_lock();
14621
14622 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14623 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14624 if (IS_ERR(rdev)) {
14625 if (rtnl)
14626 rtnl_unlock();
14627 return PTR_ERR(rdev);
14628 }
14629 info->user_ptr[0] = rdev;
14630 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14631 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14632 ASSERT_RTNL();
14633
14634 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14635 info->attrs);
14636 if (IS_ERR(wdev)) {
14637 if (rtnl)
14638 rtnl_unlock();
14639 return PTR_ERR(wdev);
14640 }
14641
14642 dev = wdev->netdev;
14643 rdev = wiphy_to_rdev(wdev->wiphy);
14644
14645 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14646 if (!dev) {
14647 if (rtnl)
14648 rtnl_unlock();
14649 return -EINVAL;
14650 }
14651
14652 info->user_ptr[1] = dev;
14653 } else {
14654 info->user_ptr[1] = wdev;
14655 }
14656
14657 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14658 !wdev_running(wdev)) {
14659 if (rtnl)
14660 rtnl_unlock();
14661 return -ENETDOWN;
14662 }
14663
14664 if (dev)
14665 dev_hold(dev);
14666
14667 info->user_ptr[0] = rdev;
14668 }
14669
14670 return 0;
14671 }
14672
nl80211_post_doit(const struct genl_ops * ops,struct sk_buff * skb,struct genl_info * info)14673 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14674 struct genl_info *info)
14675 {
14676 if (info->user_ptr[1]) {
14677 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14678 struct wireless_dev *wdev = info->user_ptr[1];
14679
14680 if (wdev->netdev)
14681 dev_put(wdev->netdev);
14682 } else {
14683 dev_put(info->user_ptr[1]);
14684 }
14685 }
14686
14687 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14688 rtnl_unlock();
14689
14690 /* If needed, clear the netlink message payload from the SKB
14691 * as it might contain key data that shouldn't stick around on
14692 * the heap after the SKB is freed. The netlink message header
14693 * is still needed for further processing, so leave it intact.
14694 */
14695 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14696 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14697
14698 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14699 }
14700 }
14701
14702 static const struct genl_ops nl80211_ops[] = {
14703 {
14704 .cmd = NL80211_CMD_GET_WIPHY,
14705 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14706 .doit = nl80211_get_wiphy,
14707 .dumpit = nl80211_dump_wiphy,
14708 .done = nl80211_dump_wiphy_done,
14709 /* can be retrieved by unprivileged users */
14710 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14711 NL80211_FLAG_NEED_RTNL,
14712 },
14713 };
14714
14715 static const struct genl_small_ops nl80211_small_ops[] = {
14716 {
14717 .cmd = NL80211_CMD_SET_WIPHY,
14718 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14719 .doit = nl80211_set_wiphy,
14720 .flags = GENL_UNS_ADMIN_PERM,
14721 .internal_flags = NL80211_FLAG_NEED_RTNL,
14722 },
14723 {
14724 .cmd = NL80211_CMD_GET_INTERFACE,
14725 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14726 .doit = nl80211_get_interface,
14727 .dumpit = nl80211_dump_interface,
14728 /* can be retrieved by unprivileged users */
14729 .internal_flags = NL80211_FLAG_NEED_WDEV |
14730 NL80211_FLAG_NEED_RTNL,
14731 },
14732 {
14733 .cmd = NL80211_CMD_SET_INTERFACE,
14734 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14735 .doit = nl80211_set_interface,
14736 .flags = GENL_UNS_ADMIN_PERM,
14737 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14738 NL80211_FLAG_NEED_RTNL,
14739 },
14740 {
14741 .cmd = NL80211_CMD_NEW_INTERFACE,
14742 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14743 .doit = nl80211_new_interface,
14744 .flags = GENL_UNS_ADMIN_PERM,
14745 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14746 NL80211_FLAG_NEED_RTNL,
14747 },
14748 {
14749 .cmd = NL80211_CMD_DEL_INTERFACE,
14750 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14751 .doit = nl80211_del_interface,
14752 .flags = GENL_UNS_ADMIN_PERM,
14753 .internal_flags = NL80211_FLAG_NEED_WDEV |
14754 NL80211_FLAG_NEED_RTNL,
14755 },
14756 {
14757 .cmd = NL80211_CMD_GET_KEY,
14758 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14759 .doit = nl80211_get_key,
14760 .flags = GENL_UNS_ADMIN_PERM,
14761 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14762 NL80211_FLAG_NEED_RTNL,
14763 },
14764 {
14765 .cmd = NL80211_CMD_SET_KEY,
14766 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14767 .doit = nl80211_set_key,
14768 .flags = GENL_UNS_ADMIN_PERM,
14769 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14770 NL80211_FLAG_NEED_RTNL |
14771 NL80211_FLAG_CLEAR_SKB,
14772 },
14773 {
14774 .cmd = NL80211_CMD_NEW_KEY,
14775 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14776 .doit = nl80211_new_key,
14777 .flags = GENL_UNS_ADMIN_PERM,
14778 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14779 NL80211_FLAG_NEED_RTNL |
14780 NL80211_FLAG_CLEAR_SKB,
14781 },
14782 {
14783 .cmd = NL80211_CMD_DEL_KEY,
14784 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14785 .doit = nl80211_del_key,
14786 .flags = GENL_UNS_ADMIN_PERM,
14787 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14788 NL80211_FLAG_NEED_RTNL,
14789 },
14790 {
14791 .cmd = NL80211_CMD_SET_BEACON,
14792 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14793 .flags = GENL_UNS_ADMIN_PERM,
14794 .doit = nl80211_set_beacon,
14795 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14796 NL80211_FLAG_NEED_RTNL,
14797 },
14798 {
14799 .cmd = NL80211_CMD_START_AP,
14800 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14801 .flags = GENL_UNS_ADMIN_PERM,
14802 .doit = nl80211_start_ap,
14803 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14804 NL80211_FLAG_NEED_RTNL,
14805 },
14806 {
14807 .cmd = NL80211_CMD_STOP_AP,
14808 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14809 .flags = GENL_UNS_ADMIN_PERM,
14810 .doit = nl80211_stop_ap,
14811 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14812 NL80211_FLAG_NEED_RTNL,
14813 },
14814 {
14815 .cmd = NL80211_CMD_GET_STATION,
14816 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14817 .doit = nl80211_get_station,
14818 .dumpit = nl80211_dump_station,
14819 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14820 NL80211_FLAG_NEED_RTNL,
14821 },
14822 {
14823 .cmd = NL80211_CMD_SET_STATION,
14824 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14825 .doit = nl80211_set_station,
14826 .flags = GENL_UNS_ADMIN_PERM,
14827 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14828 NL80211_FLAG_NEED_RTNL,
14829 },
14830 {
14831 .cmd = NL80211_CMD_NEW_STATION,
14832 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14833 .doit = nl80211_new_station,
14834 .flags = GENL_UNS_ADMIN_PERM,
14835 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14836 NL80211_FLAG_NEED_RTNL,
14837 },
14838 {
14839 .cmd = NL80211_CMD_DEL_STATION,
14840 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14841 .doit = nl80211_del_station,
14842 .flags = GENL_UNS_ADMIN_PERM,
14843 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14844 NL80211_FLAG_NEED_RTNL,
14845 },
14846 {
14847 .cmd = NL80211_CMD_GET_MPATH,
14848 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14849 .doit = nl80211_get_mpath,
14850 .dumpit = nl80211_dump_mpath,
14851 .flags = GENL_UNS_ADMIN_PERM,
14852 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14853 NL80211_FLAG_NEED_RTNL,
14854 },
14855 {
14856 .cmd = NL80211_CMD_GET_MPP,
14857 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14858 .doit = nl80211_get_mpp,
14859 .dumpit = nl80211_dump_mpp,
14860 .flags = GENL_UNS_ADMIN_PERM,
14861 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14862 NL80211_FLAG_NEED_RTNL,
14863 },
14864 {
14865 .cmd = NL80211_CMD_SET_MPATH,
14866 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14867 .doit = nl80211_set_mpath,
14868 .flags = GENL_UNS_ADMIN_PERM,
14869 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14870 NL80211_FLAG_NEED_RTNL,
14871 },
14872 {
14873 .cmd = NL80211_CMD_NEW_MPATH,
14874 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14875 .doit = nl80211_new_mpath,
14876 .flags = GENL_UNS_ADMIN_PERM,
14877 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14878 NL80211_FLAG_NEED_RTNL,
14879 },
14880 {
14881 .cmd = NL80211_CMD_DEL_MPATH,
14882 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14883 .doit = nl80211_del_mpath,
14884 .flags = GENL_UNS_ADMIN_PERM,
14885 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14886 NL80211_FLAG_NEED_RTNL,
14887 },
14888 {
14889 .cmd = NL80211_CMD_SET_BSS,
14890 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14891 .doit = nl80211_set_bss,
14892 .flags = GENL_UNS_ADMIN_PERM,
14893 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14894 NL80211_FLAG_NEED_RTNL,
14895 },
14896 {
14897 .cmd = NL80211_CMD_GET_REG,
14898 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14899 .doit = nl80211_get_reg_do,
14900 .dumpit = nl80211_get_reg_dump,
14901 .internal_flags = NL80211_FLAG_NEED_RTNL,
14902 /* can be retrieved by unprivileged users */
14903 },
14904 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14905 {
14906 .cmd = NL80211_CMD_SET_REG,
14907 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14908 .doit = nl80211_set_reg,
14909 .flags = GENL_ADMIN_PERM,
14910 .internal_flags = NL80211_FLAG_NEED_RTNL,
14911 },
14912 #endif
14913 {
14914 .cmd = NL80211_CMD_REQ_SET_REG,
14915 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14916 .doit = nl80211_req_set_reg,
14917 .flags = GENL_ADMIN_PERM,
14918 },
14919 {
14920 .cmd = NL80211_CMD_RELOAD_REGDB,
14921 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14922 .doit = nl80211_reload_regdb,
14923 .flags = GENL_ADMIN_PERM,
14924 },
14925 {
14926 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14927 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14928 .doit = nl80211_get_mesh_config,
14929 /* can be retrieved by unprivileged users */
14930 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14931 NL80211_FLAG_NEED_RTNL,
14932 },
14933 {
14934 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14935 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14936 .doit = nl80211_update_mesh_config,
14937 .flags = GENL_UNS_ADMIN_PERM,
14938 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14939 NL80211_FLAG_NEED_RTNL,
14940 },
14941 {
14942 .cmd = NL80211_CMD_TRIGGER_SCAN,
14943 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14944 .doit = nl80211_trigger_scan,
14945 .flags = GENL_UNS_ADMIN_PERM,
14946 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14947 NL80211_FLAG_NEED_RTNL,
14948 },
14949 {
14950 .cmd = NL80211_CMD_ABORT_SCAN,
14951 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14952 .doit = nl80211_abort_scan,
14953 .flags = GENL_UNS_ADMIN_PERM,
14954 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14955 NL80211_FLAG_NEED_RTNL,
14956 },
14957 {
14958 .cmd = NL80211_CMD_GET_SCAN,
14959 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14960 .dumpit = nl80211_dump_scan,
14961 },
14962 {
14963 .cmd = NL80211_CMD_START_SCHED_SCAN,
14964 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14965 .doit = nl80211_start_sched_scan,
14966 .flags = GENL_UNS_ADMIN_PERM,
14967 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14968 NL80211_FLAG_NEED_RTNL,
14969 },
14970 {
14971 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14972 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14973 .doit = nl80211_stop_sched_scan,
14974 .flags = GENL_UNS_ADMIN_PERM,
14975 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14976 NL80211_FLAG_NEED_RTNL,
14977 },
14978 {
14979 .cmd = NL80211_CMD_AUTHENTICATE,
14980 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14981 .doit = nl80211_authenticate,
14982 .flags = GENL_UNS_ADMIN_PERM,
14983 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14984 NL80211_FLAG_NEED_RTNL |
14985 NL80211_FLAG_CLEAR_SKB,
14986 },
14987 {
14988 .cmd = NL80211_CMD_ASSOCIATE,
14989 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14990 .doit = nl80211_associate,
14991 .flags = GENL_UNS_ADMIN_PERM,
14992 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14993 NL80211_FLAG_NEED_RTNL |
14994 NL80211_FLAG_CLEAR_SKB,
14995 },
14996 {
14997 .cmd = NL80211_CMD_DEAUTHENTICATE,
14998 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14999 .doit = nl80211_deauthenticate,
15000 .flags = GENL_UNS_ADMIN_PERM,
15001 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15002 NL80211_FLAG_NEED_RTNL,
15003 },
15004 {
15005 .cmd = NL80211_CMD_DISASSOCIATE,
15006 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15007 .doit = nl80211_disassociate,
15008 .flags = GENL_UNS_ADMIN_PERM,
15009 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15010 NL80211_FLAG_NEED_RTNL,
15011 },
15012 {
15013 .cmd = NL80211_CMD_JOIN_IBSS,
15014 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15015 .doit = nl80211_join_ibss,
15016 .flags = GENL_UNS_ADMIN_PERM,
15017 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15018 NL80211_FLAG_NEED_RTNL,
15019 },
15020 {
15021 .cmd = NL80211_CMD_LEAVE_IBSS,
15022 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15023 .doit = nl80211_leave_ibss,
15024 .flags = GENL_UNS_ADMIN_PERM,
15025 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15026 NL80211_FLAG_NEED_RTNL,
15027 },
15028 #ifdef CONFIG_NL80211_TESTMODE
15029 {
15030 .cmd = NL80211_CMD_TESTMODE,
15031 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15032 .doit = nl80211_testmode_do,
15033 .dumpit = nl80211_testmode_dump,
15034 .flags = GENL_UNS_ADMIN_PERM,
15035 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15036 NL80211_FLAG_NEED_RTNL,
15037 },
15038 #endif
15039 {
15040 .cmd = NL80211_CMD_CONNECT,
15041 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15042 .doit = nl80211_connect,
15043 .flags = GENL_UNS_ADMIN_PERM,
15044 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15045 NL80211_FLAG_NEED_RTNL |
15046 NL80211_FLAG_CLEAR_SKB,
15047 },
15048 {
15049 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
15050 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15051 .doit = nl80211_update_connect_params,
15052 .flags = GENL_ADMIN_PERM,
15053 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15054 NL80211_FLAG_NEED_RTNL |
15055 NL80211_FLAG_CLEAR_SKB,
15056 },
15057 {
15058 .cmd = NL80211_CMD_DISCONNECT,
15059 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15060 .doit = nl80211_disconnect,
15061 .flags = GENL_UNS_ADMIN_PERM,
15062 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15063 NL80211_FLAG_NEED_RTNL,
15064 },
15065 {
15066 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
15067 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15068 .doit = nl80211_wiphy_netns,
15069 .flags = GENL_UNS_ADMIN_PERM,
15070 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15071 NL80211_FLAG_NEED_RTNL,
15072 },
15073 {
15074 .cmd = NL80211_CMD_GET_SURVEY,
15075 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15076 .dumpit = nl80211_dump_survey,
15077 },
15078 {
15079 .cmd = NL80211_CMD_SET_PMKSA,
15080 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15081 .doit = nl80211_setdel_pmksa,
15082 .flags = GENL_UNS_ADMIN_PERM,
15083 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15084 NL80211_FLAG_NEED_RTNL |
15085 NL80211_FLAG_CLEAR_SKB,
15086 },
15087 {
15088 .cmd = NL80211_CMD_DEL_PMKSA,
15089 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15090 .doit = nl80211_setdel_pmksa,
15091 .flags = GENL_UNS_ADMIN_PERM,
15092 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15093 NL80211_FLAG_NEED_RTNL,
15094 },
15095 {
15096 .cmd = NL80211_CMD_FLUSH_PMKSA,
15097 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15098 .doit = nl80211_flush_pmksa,
15099 .flags = GENL_UNS_ADMIN_PERM,
15100 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15101 NL80211_FLAG_NEED_RTNL,
15102 },
15103 {
15104 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
15105 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15106 .doit = nl80211_remain_on_channel,
15107 .flags = GENL_UNS_ADMIN_PERM,
15108 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15109 NL80211_FLAG_NEED_RTNL,
15110 },
15111 {
15112 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15113 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15114 .doit = nl80211_cancel_remain_on_channel,
15115 .flags = GENL_UNS_ADMIN_PERM,
15116 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15117 NL80211_FLAG_NEED_RTNL,
15118 },
15119 {
15120 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
15121 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15122 .doit = nl80211_set_tx_bitrate_mask,
15123 .flags = GENL_UNS_ADMIN_PERM,
15124 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15125 NL80211_FLAG_NEED_RTNL,
15126 },
15127 {
15128 .cmd = NL80211_CMD_REGISTER_FRAME,
15129 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15130 .doit = nl80211_register_mgmt,
15131 .flags = GENL_UNS_ADMIN_PERM,
15132 .internal_flags = NL80211_FLAG_NEED_WDEV |
15133 NL80211_FLAG_NEED_RTNL,
15134 },
15135 {
15136 .cmd = NL80211_CMD_FRAME,
15137 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15138 .doit = nl80211_tx_mgmt,
15139 .flags = GENL_UNS_ADMIN_PERM,
15140 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15141 NL80211_FLAG_NEED_RTNL,
15142 },
15143 {
15144 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
15145 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15146 .doit = nl80211_tx_mgmt_cancel_wait,
15147 .flags = GENL_UNS_ADMIN_PERM,
15148 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15149 NL80211_FLAG_NEED_RTNL,
15150 },
15151 {
15152 .cmd = NL80211_CMD_SET_POWER_SAVE,
15153 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15154 .doit = nl80211_set_power_save,
15155 .flags = GENL_UNS_ADMIN_PERM,
15156 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15157 NL80211_FLAG_NEED_RTNL,
15158 },
15159 {
15160 .cmd = NL80211_CMD_GET_POWER_SAVE,
15161 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15162 .doit = nl80211_get_power_save,
15163 /* can be retrieved by unprivileged users */
15164 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15165 NL80211_FLAG_NEED_RTNL,
15166 },
15167 {
15168 .cmd = NL80211_CMD_SET_CQM,
15169 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15170 .doit = nl80211_set_cqm,
15171 .flags = GENL_UNS_ADMIN_PERM,
15172 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15173 NL80211_FLAG_NEED_RTNL,
15174 },
15175 {
15176 .cmd = NL80211_CMD_SET_CHANNEL,
15177 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15178 .doit = nl80211_set_channel,
15179 .flags = GENL_UNS_ADMIN_PERM,
15180 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15181 NL80211_FLAG_NEED_RTNL,
15182 },
15183 {
15184 .cmd = NL80211_CMD_SET_WDS_PEER,
15185 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15186 .doit = nl80211_set_wds_peer,
15187 .flags = GENL_UNS_ADMIN_PERM,
15188 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15189 NL80211_FLAG_NEED_RTNL,
15190 },
15191 {
15192 .cmd = NL80211_CMD_JOIN_MESH,
15193 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15194 .doit = nl80211_join_mesh,
15195 .flags = GENL_UNS_ADMIN_PERM,
15196 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15197 NL80211_FLAG_NEED_RTNL,
15198 },
15199 {
15200 .cmd = NL80211_CMD_LEAVE_MESH,
15201 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15202 .doit = nl80211_leave_mesh,
15203 .flags = GENL_UNS_ADMIN_PERM,
15204 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15205 NL80211_FLAG_NEED_RTNL,
15206 },
15207 {
15208 .cmd = NL80211_CMD_JOIN_OCB,
15209 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15210 .doit = nl80211_join_ocb,
15211 .flags = GENL_UNS_ADMIN_PERM,
15212 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15213 NL80211_FLAG_NEED_RTNL,
15214 },
15215 {
15216 .cmd = NL80211_CMD_LEAVE_OCB,
15217 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15218 .doit = nl80211_leave_ocb,
15219 .flags = GENL_UNS_ADMIN_PERM,
15220 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15221 NL80211_FLAG_NEED_RTNL,
15222 },
15223 #ifdef CONFIG_PM
15224 {
15225 .cmd = NL80211_CMD_GET_WOWLAN,
15226 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15227 .doit = nl80211_get_wowlan,
15228 /* can be retrieved by unprivileged users */
15229 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15230 NL80211_FLAG_NEED_RTNL,
15231 },
15232 {
15233 .cmd = NL80211_CMD_SET_WOWLAN,
15234 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15235 .doit = nl80211_set_wowlan,
15236 .flags = GENL_UNS_ADMIN_PERM,
15237 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15238 NL80211_FLAG_NEED_RTNL,
15239 },
15240 #endif
15241 {
15242 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
15243 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15244 .doit = nl80211_set_rekey_data,
15245 .flags = GENL_UNS_ADMIN_PERM,
15246 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15247 NL80211_FLAG_NEED_RTNL |
15248 NL80211_FLAG_CLEAR_SKB,
15249 },
15250 {
15251 .cmd = NL80211_CMD_TDLS_MGMT,
15252 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15253 .doit = nl80211_tdls_mgmt,
15254 .flags = GENL_UNS_ADMIN_PERM,
15255 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15256 NL80211_FLAG_NEED_RTNL,
15257 },
15258 {
15259 .cmd = NL80211_CMD_TDLS_OPER,
15260 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15261 .doit = nl80211_tdls_oper,
15262 .flags = GENL_UNS_ADMIN_PERM,
15263 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15264 NL80211_FLAG_NEED_RTNL,
15265 },
15266 {
15267 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
15268 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15269 .doit = nl80211_register_unexpected_frame,
15270 .flags = GENL_UNS_ADMIN_PERM,
15271 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15272 NL80211_FLAG_NEED_RTNL,
15273 },
15274 {
15275 .cmd = NL80211_CMD_PROBE_CLIENT,
15276 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15277 .doit = nl80211_probe_client,
15278 .flags = GENL_UNS_ADMIN_PERM,
15279 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15280 NL80211_FLAG_NEED_RTNL,
15281 },
15282 {
15283 .cmd = NL80211_CMD_REGISTER_BEACONS,
15284 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15285 .doit = nl80211_register_beacons,
15286 .flags = GENL_UNS_ADMIN_PERM,
15287 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15288 NL80211_FLAG_NEED_RTNL,
15289 },
15290 {
15291 .cmd = NL80211_CMD_SET_NOACK_MAP,
15292 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15293 .doit = nl80211_set_noack_map,
15294 .flags = GENL_UNS_ADMIN_PERM,
15295 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15296 NL80211_FLAG_NEED_RTNL,
15297 },
15298 {
15299 .cmd = NL80211_CMD_START_P2P_DEVICE,
15300 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15301 .doit = nl80211_start_p2p_device,
15302 .flags = GENL_UNS_ADMIN_PERM,
15303 .internal_flags = NL80211_FLAG_NEED_WDEV |
15304 NL80211_FLAG_NEED_RTNL,
15305 },
15306 {
15307 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
15308 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15309 .doit = nl80211_stop_p2p_device,
15310 .flags = GENL_UNS_ADMIN_PERM,
15311 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15312 NL80211_FLAG_NEED_RTNL,
15313 },
15314 {
15315 .cmd = NL80211_CMD_START_NAN,
15316 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15317 .doit = nl80211_start_nan,
15318 .flags = GENL_ADMIN_PERM,
15319 .internal_flags = NL80211_FLAG_NEED_WDEV |
15320 NL80211_FLAG_NEED_RTNL,
15321 },
15322 {
15323 .cmd = NL80211_CMD_STOP_NAN,
15324 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15325 .doit = nl80211_stop_nan,
15326 .flags = GENL_ADMIN_PERM,
15327 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15328 NL80211_FLAG_NEED_RTNL,
15329 },
15330 {
15331 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15332 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15333 .doit = nl80211_nan_add_func,
15334 .flags = GENL_ADMIN_PERM,
15335 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15336 NL80211_FLAG_NEED_RTNL,
15337 },
15338 {
15339 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15340 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15341 .doit = nl80211_nan_del_func,
15342 .flags = GENL_ADMIN_PERM,
15343 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15344 NL80211_FLAG_NEED_RTNL,
15345 },
15346 {
15347 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15348 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15349 .doit = nl80211_nan_change_config,
15350 .flags = GENL_ADMIN_PERM,
15351 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15352 NL80211_FLAG_NEED_RTNL,
15353 },
15354 {
15355 .cmd = NL80211_CMD_SET_MCAST_RATE,
15356 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15357 .doit = nl80211_set_mcast_rate,
15358 .flags = GENL_UNS_ADMIN_PERM,
15359 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15360 NL80211_FLAG_NEED_RTNL,
15361 },
15362 {
15363 .cmd = NL80211_CMD_SET_MAC_ACL,
15364 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15365 .doit = nl80211_set_mac_acl,
15366 .flags = GENL_UNS_ADMIN_PERM,
15367 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15368 NL80211_FLAG_NEED_RTNL,
15369 },
15370 {
15371 .cmd = NL80211_CMD_RADAR_DETECT,
15372 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15373 .doit = nl80211_start_radar_detection,
15374 .flags = GENL_UNS_ADMIN_PERM,
15375 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15376 NL80211_FLAG_NEED_RTNL,
15377 },
15378 {
15379 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15380 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15381 .doit = nl80211_get_protocol_features,
15382 },
15383 {
15384 .cmd = NL80211_CMD_UPDATE_FT_IES,
15385 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15386 .doit = nl80211_update_ft_ies,
15387 .flags = GENL_UNS_ADMIN_PERM,
15388 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15389 NL80211_FLAG_NEED_RTNL,
15390 },
15391 {
15392 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15393 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15394 .doit = nl80211_crit_protocol_start,
15395 .flags = GENL_UNS_ADMIN_PERM,
15396 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15397 NL80211_FLAG_NEED_RTNL,
15398 },
15399 {
15400 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15401 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15402 .doit = nl80211_crit_protocol_stop,
15403 .flags = GENL_UNS_ADMIN_PERM,
15404 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15405 NL80211_FLAG_NEED_RTNL,
15406 },
15407 {
15408 .cmd = NL80211_CMD_GET_COALESCE,
15409 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15410 .doit = nl80211_get_coalesce,
15411 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15412 NL80211_FLAG_NEED_RTNL,
15413 },
15414 {
15415 .cmd = NL80211_CMD_SET_COALESCE,
15416 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15417 .doit = nl80211_set_coalesce,
15418 .flags = GENL_UNS_ADMIN_PERM,
15419 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15420 NL80211_FLAG_NEED_RTNL,
15421 },
15422 {
15423 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15424 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15425 .doit = nl80211_channel_switch,
15426 .flags = GENL_UNS_ADMIN_PERM,
15427 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15428 NL80211_FLAG_NEED_RTNL,
15429 },
15430 {
15431 .cmd = NL80211_CMD_VENDOR,
15432 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15433 .doit = nl80211_vendor_cmd,
15434 .dumpit = nl80211_vendor_cmd_dump,
15435 .flags = GENL_UNS_ADMIN_PERM,
15436 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15437 NL80211_FLAG_NEED_RTNL |
15438 NL80211_FLAG_CLEAR_SKB,
15439 },
15440 {
15441 .cmd = NL80211_CMD_SET_QOS_MAP,
15442 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15443 .doit = nl80211_set_qos_map,
15444 .flags = GENL_UNS_ADMIN_PERM,
15445 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15446 NL80211_FLAG_NEED_RTNL,
15447 },
15448 {
15449 .cmd = NL80211_CMD_ADD_TX_TS,
15450 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15451 .doit = nl80211_add_tx_ts,
15452 .flags = GENL_UNS_ADMIN_PERM,
15453 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15454 NL80211_FLAG_NEED_RTNL,
15455 },
15456 {
15457 .cmd = NL80211_CMD_DEL_TX_TS,
15458 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15459 .doit = nl80211_del_tx_ts,
15460 .flags = GENL_UNS_ADMIN_PERM,
15461 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15462 NL80211_FLAG_NEED_RTNL,
15463 },
15464 {
15465 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15466 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15467 .doit = nl80211_tdls_channel_switch,
15468 .flags = GENL_UNS_ADMIN_PERM,
15469 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15470 NL80211_FLAG_NEED_RTNL,
15471 },
15472 {
15473 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15474 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15475 .doit = nl80211_tdls_cancel_channel_switch,
15476 .flags = GENL_UNS_ADMIN_PERM,
15477 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15478 NL80211_FLAG_NEED_RTNL,
15479 },
15480 {
15481 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15482 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15483 .doit = nl80211_set_multicast_to_unicast,
15484 .flags = GENL_UNS_ADMIN_PERM,
15485 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15486 NL80211_FLAG_NEED_RTNL,
15487 },
15488 {
15489 .cmd = NL80211_CMD_SET_PMK,
15490 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15491 .doit = nl80211_set_pmk,
15492 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15493 NL80211_FLAG_NEED_RTNL |
15494 NL80211_FLAG_CLEAR_SKB,
15495 },
15496 {
15497 .cmd = NL80211_CMD_DEL_PMK,
15498 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15499 .doit = nl80211_del_pmk,
15500 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15501 NL80211_FLAG_NEED_RTNL,
15502 },
15503 {
15504 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15505 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15506 .doit = nl80211_external_auth,
15507 .flags = GENL_ADMIN_PERM,
15508 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15509 NL80211_FLAG_NEED_RTNL,
15510 },
15511 {
15512 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15513 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15514 .doit = nl80211_tx_control_port,
15515 .flags = GENL_UNS_ADMIN_PERM,
15516 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15517 NL80211_FLAG_NEED_RTNL,
15518 },
15519 {
15520 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15521 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15522 .doit = nl80211_get_ftm_responder_stats,
15523 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15524 NL80211_FLAG_NEED_RTNL,
15525 },
15526 {
15527 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15528 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15529 .doit = nl80211_pmsr_start,
15530 .flags = GENL_UNS_ADMIN_PERM,
15531 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15532 NL80211_FLAG_NEED_RTNL,
15533 },
15534 {
15535 .cmd = NL80211_CMD_NOTIFY_RADAR,
15536 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15537 .doit = nl80211_notify_radar_detection,
15538 .flags = GENL_UNS_ADMIN_PERM,
15539 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15540 NL80211_FLAG_NEED_RTNL,
15541 },
15542 {
15543 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15544 .doit = nl80211_update_owe_info,
15545 .flags = GENL_ADMIN_PERM,
15546 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15547 NL80211_FLAG_NEED_RTNL,
15548 },
15549 {
15550 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15551 .doit = nl80211_probe_mesh_link,
15552 .flags = GENL_UNS_ADMIN_PERM,
15553 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15554 NL80211_FLAG_NEED_RTNL,
15555 },
15556 {
15557 .cmd = NL80211_CMD_SET_TID_CONFIG,
15558 .doit = nl80211_set_tid_config,
15559 .flags = GENL_UNS_ADMIN_PERM,
15560 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15561 NL80211_FLAG_NEED_RTNL,
15562 },
15563 };
15564
15565 static struct genl_family nl80211_fam __ro_after_init = {
15566 .name = NL80211_GENL_NAME, /* have users key off the name instead */
15567 .hdrsize = 0, /* no private header */
15568 .version = 1, /* no particular meaning now */
15569 .maxattr = NL80211_ATTR_MAX,
15570 .policy = nl80211_policy,
15571 .netnsok = true,
15572 .pre_doit = nl80211_pre_doit,
15573 .post_doit = nl80211_post_doit,
15574 .module = THIS_MODULE,
15575 .ops = nl80211_ops,
15576 .n_ops = ARRAY_SIZE(nl80211_ops),
15577 .small_ops = nl80211_small_ops,
15578 .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
15579 .mcgrps = nl80211_mcgrps,
15580 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15581 .parallel_ops = true,
15582 };
15583
15584 /* notification functions */
15585
nl80211_notify_wiphy(struct cfg80211_registered_device * rdev,enum nl80211_commands cmd)15586 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15587 enum nl80211_commands cmd)
15588 {
15589 struct sk_buff *msg;
15590 struct nl80211_dump_wiphy_state state = {};
15591
15592 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15593 cmd != NL80211_CMD_DEL_WIPHY);
15594
15595 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15596 if (!msg)
15597 return;
15598
15599 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15600 nlmsg_free(msg);
15601 return;
15602 }
15603
15604 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15605 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15606 }
15607
nl80211_notify_iface(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,enum nl80211_commands cmd)15608 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15609 struct wireless_dev *wdev,
15610 enum nl80211_commands cmd)
15611 {
15612 struct sk_buff *msg;
15613
15614 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15615 if (!msg)
15616 return;
15617
15618 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15619 nlmsg_free(msg);
15620 return;
15621 }
15622
15623 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15624 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15625 }
15626
nl80211_add_scan_req(struct sk_buff * msg,struct cfg80211_registered_device * rdev)15627 static int nl80211_add_scan_req(struct sk_buff *msg,
15628 struct cfg80211_registered_device *rdev)
15629 {
15630 struct cfg80211_scan_request *req = rdev->scan_req;
15631 struct nlattr *nest;
15632 int i;
15633 struct cfg80211_scan_info *info;
15634
15635 if (WARN_ON(!req))
15636 return 0;
15637
15638 nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15639 if (!nest)
15640 goto nla_put_failure;
15641 for (i = 0; i < req->n_ssids; i++) {
15642 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15643 goto nla_put_failure;
15644 }
15645 nla_nest_end(msg, nest);
15646
15647 if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15648 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15649 if (!nest)
15650 goto nla_put_failure;
15651 for (i = 0; i < req->n_channels; i++) {
15652 if (nla_put_u32(msg, i,
15653 ieee80211_channel_to_khz(req->channels[i])))
15654 goto nla_put_failure;
15655 }
15656 nla_nest_end(msg, nest);
15657 } else {
15658 nest = nla_nest_start_noflag(msg,
15659 NL80211_ATTR_SCAN_FREQUENCIES);
15660 if (!nest)
15661 goto nla_put_failure;
15662 for (i = 0; i < req->n_channels; i++) {
15663 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15664 goto nla_put_failure;
15665 }
15666 nla_nest_end(msg, nest);
15667 }
15668
15669 if (req->ie &&
15670 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15671 goto nla_put_failure;
15672
15673 if (req->flags &&
15674 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15675 goto nla_put_failure;
15676
15677 info = rdev->int_scan_req ? &rdev->int_scan_req->info :
15678 &rdev->scan_req->info;
15679 if (info->scan_start_tsf &&
15680 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15681 info->scan_start_tsf, NL80211_BSS_PAD) ||
15682 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15683 info->tsf_bssid)))
15684 goto nla_put_failure;
15685
15686 return 0;
15687 nla_put_failure:
15688 return -ENOBUFS;
15689 }
15690
nl80211_prep_scan_msg(struct sk_buff * msg,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u32 portid,u32 seq,int flags,u32 cmd)15691 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15692 struct cfg80211_registered_device *rdev,
15693 struct wireless_dev *wdev,
15694 u32 portid, u32 seq, int flags,
15695 u32 cmd)
15696 {
15697 void *hdr;
15698
15699 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15700 if (!hdr)
15701 return -1;
15702
15703 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15704 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15705 wdev->netdev->ifindex)) ||
15706 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15707 NL80211_ATTR_PAD))
15708 goto nla_put_failure;
15709
15710 /* ignore errors and send incomplete event anyway */
15711 nl80211_add_scan_req(msg, rdev);
15712
15713 genlmsg_end(msg, hdr);
15714 return 0;
15715
15716 nla_put_failure:
15717 genlmsg_cancel(msg, hdr);
15718 return -EMSGSIZE;
15719 }
15720
15721 static int
nl80211_prep_sched_scan_msg(struct sk_buff * msg,struct cfg80211_sched_scan_request * req,u32 cmd)15722 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15723 struct cfg80211_sched_scan_request *req, u32 cmd)
15724 {
15725 void *hdr;
15726
15727 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15728 if (!hdr)
15729 return -1;
15730
15731 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15732 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15733 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15734 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15735 NL80211_ATTR_PAD))
15736 goto nla_put_failure;
15737
15738 genlmsg_end(msg, hdr);
15739 return 0;
15740
15741 nla_put_failure:
15742 genlmsg_cancel(msg, hdr);
15743 return -EMSGSIZE;
15744 }
15745
nl80211_send_scan_start(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev)15746 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15747 struct wireless_dev *wdev)
15748 {
15749 struct sk_buff *msg;
15750
15751 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15752 if (!msg)
15753 return;
15754
15755 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15756 NL80211_CMD_TRIGGER_SCAN) < 0) {
15757 nlmsg_free(msg);
15758 return;
15759 }
15760
15761 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15762 NL80211_MCGRP_SCAN, GFP_KERNEL);
15763 }
15764
nl80211_build_scan_msg(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,bool aborted)15765 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15766 struct wireless_dev *wdev, bool aborted)
15767 {
15768 struct sk_buff *msg;
15769
15770 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15771 if (!msg)
15772 return NULL;
15773
15774 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15775 aborted ? NL80211_CMD_SCAN_ABORTED :
15776 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15777 nlmsg_free(msg);
15778 return NULL;
15779 }
15780
15781 return msg;
15782 }
15783
15784 /* send message created by nl80211_build_scan_msg() */
nl80211_send_scan_msg(struct cfg80211_registered_device * rdev,struct sk_buff * msg)15785 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15786 struct sk_buff *msg)
15787 {
15788 if (!msg)
15789 return;
15790
15791 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15792 NL80211_MCGRP_SCAN, GFP_KERNEL);
15793 }
15794
nl80211_send_sched_scan(struct cfg80211_sched_scan_request * req,u32 cmd)15795 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15796 {
15797 struct sk_buff *msg;
15798
15799 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15800 if (!msg)
15801 return;
15802
15803 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15804 nlmsg_free(msg);
15805 return;
15806 }
15807
15808 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15809 NL80211_MCGRP_SCAN, GFP_KERNEL);
15810 }
15811
nl80211_reg_change_event_fill(struct sk_buff * msg,struct regulatory_request * request)15812 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15813 struct regulatory_request *request)
15814 {
15815 /* Userspace can always count this one always being set */
15816 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15817 goto nla_put_failure;
15818
15819 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15820 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15821 NL80211_REGDOM_TYPE_WORLD))
15822 goto nla_put_failure;
15823 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15824 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15825 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15826 goto nla_put_failure;
15827 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15828 request->intersect) {
15829 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15830 NL80211_REGDOM_TYPE_INTERSECTION))
15831 goto nla_put_failure;
15832 } else {
15833 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15834 NL80211_REGDOM_TYPE_COUNTRY) ||
15835 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15836 request->alpha2))
15837 goto nla_put_failure;
15838 }
15839
15840 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15841 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15842
15843 if (wiphy &&
15844 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15845 goto nla_put_failure;
15846
15847 if (wiphy &&
15848 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15849 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15850 goto nla_put_failure;
15851 }
15852
15853 return true;
15854
15855 nla_put_failure:
15856 return false;
15857 }
15858
15859 /*
15860 * This can happen on global regulatory changes or device specific settings
15861 * based on custom regulatory domains.
15862 */
nl80211_common_reg_change_event(enum nl80211_commands cmd_id,struct regulatory_request * request)15863 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15864 struct regulatory_request *request)
15865 {
15866 struct sk_buff *msg;
15867 void *hdr;
15868
15869 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15870 if (!msg)
15871 return;
15872
15873 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15874 if (!hdr)
15875 goto nla_put_failure;
15876
15877 if (!nl80211_reg_change_event_fill(msg, request))
15878 goto nla_put_failure;
15879
15880 genlmsg_end(msg, hdr);
15881
15882 rcu_read_lock();
15883 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15884 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15885 rcu_read_unlock();
15886
15887 return;
15888
15889 nla_put_failure:
15890 nlmsg_free(msg);
15891 }
15892
nl80211_send_mlme_event(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,enum nl80211_commands cmd,gfp_t gfp,int uapsd_queues,const u8 * req_ies,size_t req_ies_len)15893 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15894 struct net_device *netdev,
15895 const u8 *buf, size_t len,
15896 enum nl80211_commands cmd, gfp_t gfp,
15897 int uapsd_queues, const u8 *req_ies,
15898 size_t req_ies_len)
15899 {
15900 struct sk_buff *msg;
15901 void *hdr;
15902
15903 msg = nlmsg_new(100 + len + req_ies_len, gfp);
15904 if (!msg)
15905 return;
15906
15907 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15908 if (!hdr) {
15909 nlmsg_free(msg);
15910 return;
15911 }
15912
15913 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15914 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15915 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15916 (req_ies &&
15917 nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15918 goto nla_put_failure;
15919
15920 if (uapsd_queues >= 0) {
15921 struct nlattr *nla_wmm =
15922 nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15923 if (!nla_wmm)
15924 goto nla_put_failure;
15925
15926 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15927 uapsd_queues))
15928 goto nla_put_failure;
15929
15930 nla_nest_end(msg, nla_wmm);
15931 }
15932
15933 genlmsg_end(msg, hdr);
15934
15935 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15936 NL80211_MCGRP_MLME, gfp);
15937 return;
15938
15939 nla_put_failure:
15940 nlmsg_free(msg);
15941 }
15942
nl80211_send_rx_auth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)15943 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15944 struct net_device *netdev, const u8 *buf,
15945 size_t len, gfp_t gfp)
15946 {
15947 nl80211_send_mlme_event(rdev, netdev, buf, len,
15948 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15949 }
15950
nl80211_send_rx_assoc(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp,int uapsd_queues,const u8 * req_ies,size_t req_ies_len)15951 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15952 struct net_device *netdev, const u8 *buf,
15953 size_t len, gfp_t gfp, int uapsd_queues,
15954 const u8 *req_ies, size_t req_ies_len)
15955 {
15956 nl80211_send_mlme_event(rdev, netdev, buf, len,
15957 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15958 req_ies, req_ies_len);
15959 }
15960
nl80211_send_deauth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)15961 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15962 struct net_device *netdev, const u8 *buf,
15963 size_t len, gfp_t gfp)
15964 {
15965 nl80211_send_mlme_event(rdev, netdev, buf, len,
15966 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15967 }
15968
nl80211_send_disassoc(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)15969 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15970 struct net_device *netdev, const u8 *buf,
15971 size_t len, gfp_t gfp)
15972 {
15973 nl80211_send_mlme_event(rdev, netdev, buf, len,
15974 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15975 }
15976
cfg80211_rx_unprot_mlme_mgmt(struct net_device * dev,const u8 * buf,size_t len)15977 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15978 size_t len)
15979 {
15980 struct wireless_dev *wdev = dev->ieee80211_ptr;
15981 struct wiphy *wiphy = wdev->wiphy;
15982 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15983 const struct ieee80211_mgmt *mgmt = (void *)buf;
15984 u32 cmd;
15985
15986 if (WARN_ON(len < 2))
15987 return;
15988
15989 if (ieee80211_is_deauth(mgmt->frame_control)) {
15990 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15991 } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
15992 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15993 } else if (ieee80211_is_beacon(mgmt->frame_control)) {
15994 if (wdev->unprot_beacon_reported &&
15995 elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
15996 return;
15997 cmd = NL80211_CMD_UNPROT_BEACON;
15998 wdev->unprot_beacon_reported = jiffies;
15999 } else {
16000 return;
16001 }
16002
16003 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
16004 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
16005 NULL, 0);
16006 }
16007 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
16008
nl80211_send_mlme_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,int cmd,const u8 * addr,gfp_t gfp)16009 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
16010 struct net_device *netdev, int cmd,
16011 const u8 *addr, gfp_t gfp)
16012 {
16013 struct sk_buff *msg;
16014 void *hdr;
16015
16016 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16017 if (!msg)
16018 return;
16019
16020 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16021 if (!hdr) {
16022 nlmsg_free(msg);
16023 return;
16024 }
16025
16026 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16027 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16028 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16029 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16030 goto nla_put_failure;
16031
16032 genlmsg_end(msg, hdr);
16033
16034 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16035 NL80211_MCGRP_MLME, gfp);
16036 return;
16037
16038 nla_put_failure:
16039 nlmsg_free(msg);
16040 }
16041
nl80211_send_auth_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)16042 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
16043 struct net_device *netdev, const u8 *addr,
16044 gfp_t gfp)
16045 {
16046 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
16047 addr, gfp);
16048 }
16049
nl80211_send_assoc_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)16050 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
16051 struct net_device *netdev, const u8 *addr,
16052 gfp_t gfp)
16053 {
16054 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
16055 addr, gfp);
16056 }
16057
nl80211_send_connect_result(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_connect_resp_params * cr,gfp_t gfp)16058 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
16059 struct net_device *netdev,
16060 struct cfg80211_connect_resp_params *cr,
16061 gfp_t gfp)
16062 {
16063 struct sk_buff *msg;
16064 void *hdr;
16065
16066 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
16067 cr->fils.kek_len + cr->fils.pmk_len +
16068 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16069 if (!msg)
16070 return;
16071
16072 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
16073 if (!hdr) {
16074 nlmsg_free(msg);
16075 return;
16076 }
16077
16078 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16079 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16080 (cr->bssid &&
16081 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
16082 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
16083 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
16084 cr->status) ||
16085 (cr->status < 0 &&
16086 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16087 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
16088 cr->timeout_reason))) ||
16089 (cr->req_ie &&
16090 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
16091 (cr->resp_ie &&
16092 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
16093 cr->resp_ie)) ||
16094 (cr->fils.update_erp_next_seq_num &&
16095 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16096 cr->fils.erp_next_seq_num)) ||
16097 (cr->status == WLAN_STATUS_SUCCESS &&
16098 ((cr->fils.kek &&
16099 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
16100 cr->fils.kek)) ||
16101 (cr->fils.pmk &&
16102 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
16103 (cr->fils.pmkid &&
16104 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
16105 goto nla_put_failure;
16106
16107 genlmsg_end(msg, hdr);
16108
16109 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16110 NL80211_MCGRP_MLME, gfp);
16111 return;
16112
16113 nla_put_failure:
16114 nlmsg_free(msg);
16115 }
16116
nl80211_send_roamed(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_roam_info * info,gfp_t gfp)16117 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
16118 struct net_device *netdev,
16119 struct cfg80211_roam_info *info, gfp_t gfp)
16120 {
16121 struct sk_buff *msg;
16122 void *hdr;
16123 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
16124
16125 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
16126 info->fils.kek_len + info->fils.pmk_len +
16127 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16128 if (!msg)
16129 return;
16130
16131 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
16132 if (!hdr) {
16133 nlmsg_free(msg);
16134 return;
16135 }
16136
16137 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16138 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16139 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
16140 (info->req_ie &&
16141 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
16142 info->req_ie)) ||
16143 (info->resp_ie &&
16144 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
16145 info->resp_ie)) ||
16146 (info->fils.update_erp_next_seq_num &&
16147 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16148 info->fils.erp_next_seq_num)) ||
16149 (info->fils.kek &&
16150 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
16151 info->fils.kek)) ||
16152 (info->fils.pmk &&
16153 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
16154 (info->fils.pmkid &&
16155 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
16156 goto nla_put_failure;
16157
16158 genlmsg_end(msg, hdr);
16159
16160 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16161 NL80211_MCGRP_MLME, gfp);
16162 return;
16163
16164 nla_put_failure:
16165 nlmsg_free(msg);
16166 }
16167
nl80211_send_port_authorized(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid)16168 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
16169 struct net_device *netdev, const u8 *bssid)
16170 {
16171 struct sk_buff *msg;
16172 void *hdr;
16173
16174 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16175 if (!msg)
16176 return;
16177
16178 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
16179 if (!hdr) {
16180 nlmsg_free(msg);
16181 return;
16182 }
16183
16184 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16185 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16186 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16187 goto nla_put_failure;
16188
16189 genlmsg_end(msg, hdr);
16190
16191 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16192 NL80211_MCGRP_MLME, GFP_KERNEL);
16193 return;
16194
16195 nla_put_failure:
16196 nlmsg_free(msg);
16197 }
16198
nl80211_send_disconnected(struct cfg80211_registered_device * rdev,struct net_device * netdev,u16 reason,const u8 * ie,size_t ie_len,bool from_ap)16199 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
16200 struct net_device *netdev, u16 reason,
16201 const u8 *ie, size_t ie_len, bool from_ap)
16202 {
16203 struct sk_buff *msg;
16204 void *hdr;
16205
16206 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
16207 if (!msg)
16208 return;
16209
16210 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
16211 if (!hdr) {
16212 nlmsg_free(msg);
16213 return;
16214 }
16215
16216 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16217 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16218 (reason &&
16219 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
16220 (from_ap &&
16221 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
16222 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
16223 goto nla_put_failure;
16224
16225 genlmsg_end(msg, hdr);
16226
16227 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16228 NL80211_MCGRP_MLME, GFP_KERNEL);
16229 return;
16230
16231 nla_put_failure:
16232 nlmsg_free(msg);
16233 }
16234
nl80211_send_ibss_bssid(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,gfp_t gfp)16235 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
16236 struct net_device *netdev, const u8 *bssid,
16237 gfp_t gfp)
16238 {
16239 struct sk_buff *msg;
16240 void *hdr;
16241
16242 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16243 if (!msg)
16244 return;
16245
16246 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
16247 if (!hdr) {
16248 nlmsg_free(msg);
16249 return;
16250 }
16251
16252 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16253 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16254 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16255 goto nla_put_failure;
16256
16257 genlmsg_end(msg, hdr);
16258
16259 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16260 NL80211_MCGRP_MLME, gfp);
16261 return;
16262
16263 nla_put_failure:
16264 nlmsg_free(msg);
16265 }
16266
cfg80211_notify_new_peer_candidate(struct net_device * dev,const u8 * addr,const u8 * ie,u8 ie_len,int sig_dbm,gfp_t gfp)16267 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
16268 const u8 *ie, u8 ie_len,
16269 int sig_dbm, gfp_t gfp)
16270 {
16271 struct wireless_dev *wdev = dev->ieee80211_ptr;
16272 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16273 struct sk_buff *msg;
16274 void *hdr;
16275
16276 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
16277 return;
16278
16279 trace_cfg80211_notify_new_peer_candidate(dev, addr);
16280
16281 msg = nlmsg_new(100 + ie_len, gfp);
16282 if (!msg)
16283 return;
16284
16285 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
16286 if (!hdr) {
16287 nlmsg_free(msg);
16288 return;
16289 }
16290
16291 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16292 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16293 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16294 (ie_len && ie &&
16295 nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
16296 (sig_dbm &&
16297 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
16298 goto nla_put_failure;
16299
16300 genlmsg_end(msg, hdr);
16301
16302 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16303 NL80211_MCGRP_MLME, gfp);
16304 return;
16305
16306 nla_put_failure:
16307 nlmsg_free(msg);
16308 }
16309 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
16310
nl80211_michael_mic_failure(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,enum nl80211_key_type key_type,int key_id,const u8 * tsc,gfp_t gfp)16311 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
16312 struct net_device *netdev, const u8 *addr,
16313 enum nl80211_key_type key_type, int key_id,
16314 const u8 *tsc, gfp_t gfp)
16315 {
16316 struct sk_buff *msg;
16317 void *hdr;
16318
16319 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16320 if (!msg)
16321 return;
16322
16323 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16324 if (!hdr) {
16325 nlmsg_free(msg);
16326 return;
16327 }
16328
16329 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16330 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16331 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16332 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16333 (key_id != -1 &&
16334 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16335 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16336 goto nla_put_failure;
16337
16338 genlmsg_end(msg, hdr);
16339
16340 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16341 NL80211_MCGRP_MLME, gfp);
16342 return;
16343
16344 nla_put_failure:
16345 nlmsg_free(msg);
16346 }
16347
nl80211_send_beacon_hint_event(struct wiphy * wiphy,struct ieee80211_channel * channel_before,struct ieee80211_channel * channel_after)16348 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16349 struct ieee80211_channel *channel_before,
16350 struct ieee80211_channel *channel_after)
16351 {
16352 struct sk_buff *msg;
16353 void *hdr;
16354 struct nlattr *nl_freq;
16355
16356 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16357 if (!msg)
16358 return;
16359
16360 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16361 if (!hdr) {
16362 nlmsg_free(msg);
16363 return;
16364 }
16365
16366 /*
16367 * Since we are applying the beacon hint to a wiphy we know its
16368 * wiphy_idx is valid
16369 */
16370 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16371 goto nla_put_failure;
16372
16373 /* Before */
16374 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16375 if (!nl_freq)
16376 goto nla_put_failure;
16377
16378 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16379 goto nla_put_failure;
16380 nla_nest_end(msg, nl_freq);
16381
16382 /* After */
16383 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16384 if (!nl_freq)
16385 goto nla_put_failure;
16386
16387 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16388 goto nla_put_failure;
16389 nla_nest_end(msg, nl_freq);
16390
16391 genlmsg_end(msg, hdr);
16392
16393 rcu_read_lock();
16394 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16395 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16396 rcu_read_unlock();
16397
16398 return;
16399
16400 nla_put_failure:
16401 nlmsg_free(msg);
16402 }
16403
nl80211_send_remain_on_chan_event(int cmd,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,unsigned int duration,gfp_t gfp)16404 static void nl80211_send_remain_on_chan_event(
16405 int cmd, struct cfg80211_registered_device *rdev,
16406 struct wireless_dev *wdev, u64 cookie,
16407 struct ieee80211_channel *chan,
16408 unsigned int duration, gfp_t gfp)
16409 {
16410 struct sk_buff *msg;
16411 void *hdr;
16412
16413 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16414 if (!msg)
16415 return;
16416
16417 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16418 if (!hdr) {
16419 nlmsg_free(msg);
16420 return;
16421 }
16422
16423 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16424 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16425 wdev->netdev->ifindex)) ||
16426 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16427 NL80211_ATTR_PAD) ||
16428 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16429 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16430 NL80211_CHAN_NO_HT) ||
16431 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16432 NL80211_ATTR_PAD))
16433 goto nla_put_failure;
16434
16435 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16436 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16437 goto nla_put_failure;
16438
16439 genlmsg_end(msg, hdr);
16440
16441 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16442 NL80211_MCGRP_MLME, gfp);
16443 return;
16444
16445 nla_put_failure:
16446 nlmsg_free(msg);
16447 }
16448
cfg80211_ready_on_channel(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,unsigned int duration,gfp_t gfp)16449 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16450 struct ieee80211_channel *chan,
16451 unsigned int duration, gfp_t gfp)
16452 {
16453 struct wiphy *wiphy = wdev->wiphy;
16454 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16455
16456 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16457 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16458 rdev, wdev, cookie, chan,
16459 duration, gfp);
16460 }
16461 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16462
cfg80211_remain_on_channel_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)16463 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16464 struct ieee80211_channel *chan,
16465 gfp_t gfp)
16466 {
16467 struct wiphy *wiphy = wdev->wiphy;
16468 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16469
16470 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16471 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16472 rdev, wdev, cookie, chan, 0, gfp);
16473 }
16474 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16475
cfg80211_tx_mgmt_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)16476 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16477 struct ieee80211_channel *chan,
16478 gfp_t gfp)
16479 {
16480 struct wiphy *wiphy = wdev->wiphy;
16481 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16482
16483 trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16484 nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16485 rdev, wdev, cookie, chan, 0, gfp);
16486 }
16487 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16488
cfg80211_new_sta(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)16489 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16490 struct station_info *sinfo, gfp_t gfp)
16491 {
16492 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16493 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16494 struct sk_buff *msg;
16495
16496 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16497
16498 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16499 if (!msg)
16500 return;
16501
16502 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16503 rdev, dev, mac_addr, sinfo) < 0) {
16504 nlmsg_free(msg);
16505 return;
16506 }
16507
16508 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16509 NL80211_MCGRP_MLME, gfp);
16510 }
16511 EXPORT_SYMBOL(cfg80211_new_sta);
16512
cfg80211_del_sta_sinfo(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)16513 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16514 struct station_info *sinfo, gfp_t gfp)
16515 {
16516 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16517 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16518 struct sk_buff *msg;
16519 struct station_info empty_sinfo = {};
16520
16521 if (!sinfo)
16522 sinfo = &empty_sinfo;
16523
16524 trace_cfg80211_del_sta(dev, mac_addr);
16525
16526 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16527 if (!msg) {
16528 cfg80211_sinfo_release_content(sinfo);
16529 return;
16530 }
16531
16532 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16533 rdev, dev, mac_addr, sinfo) < 0) {
16534 nlmsg_free(msg);
16535 return;
16536 }
16537
16538 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16539 NL80211_MCGRP_MLME, gfp);
16540 }
16541 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16542
cfg80211_conn_failed(struct net_device * dev,const u8 * mac_addr,enum nl80211_connect_failed_reason reason,gfp_t gfp)16543 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16544 enum nl80211_connect_failed_reason reason,
16545 gfp_t gfp)
16546 {
16547 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16548 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16549 struct sk_buff *msg;
16550 void *hdr;
16551
16552 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16553 if (!msg)
16554 return;
16555
16556 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16557 if (!hdr) {
16558 nlmsg_free(msg);
16559 return;
16560 }
16561
16562 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16563 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16564 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16565 goto nla_put_failure;
16566
16567 genlmsg_end(msg, hdr);
16568
16569 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16570 NL80211_MCGRP_MLME, gfp);
16571 return;
16572
16573 nla_put_failure:
16574 nlmsg_free(msg);
16575 }
16576 EXPORT_SYMBOL(cfg80211_conn_failed);
16577
__nl80211_unexpected_frame(struct net_device * dev,u8 cmd,const u8 * addr,gfp_t gfp)16578 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16579 const u8 *addr, gfp_t gfp)
16580 {
16581 struct wireless_dev *wdev = dev->ieee80211_ptr;
16582 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16583 struct sk_buff *msg;
16584 void *hdr;
16585 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16586
16587 if (!nlportid)
16588 return false;
16589
16590 msg = nlmsg_new(100, gfp);
16591 if (!msg)
16592 return true;
16593
16594 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16595 if (!hdr) {
16596 nlmsg_free(msg);
16597 return true;
16598 }
16599
16600 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16601 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16602 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16603 goto nla_put_failure;
16604
16605 genlmsg_end(msg, hdr);
16606 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16607 return true;
16608
16609 nla_put_failure:
16610 nlmsg_free(msg);
16611 return true;
16612 }
16613
cfg80211_rx_spurious_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)16614 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16615 const u8 *addr, gfp_t gfp)
16616 {
16617 struct wireless_dev *wdev = dev->ieee80211_ptr;
16618 bool ret;
16619
16620 trace_cfg80211_rx_spurious_frame(dev, addr);
16621
16622 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16623 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16624 trace_cfg80211_return_bool(false);
16625 return false;
16626 }
16627 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16628 addr, gfp);
16629 trace_cfg80211_return_bool(ret);
16630 return ret;
16631 }
16632 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16633
cfg80211_rx_unexpected_4addr_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)16634 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16635 const u8 *addr, gfp_t gfp)
16636 {
16637 struct wireless_dev *wdev = dev->ieee80211_ptr;
16638 bool ret;
16639
16640 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16641
16642 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16643 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16644 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16645 trace_cfg80211_return_bool(false);
16646 return false;
16647 }
16648 ret = __nl80211_unexpected_frame(dev,
16649 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16650 addr, gfp);
16651 trace_cfg80211_return_bool(ret);
16652 return ret;
16653 }
16654 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16655
nl80211_send_mgmt(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u32 nlportid,int freq,int sig_dbm,const u8 * buf,size_t len,u32 flags,gfp_t gfp)16656 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16657 struct wireless_dev *wdev, u32 nlportid,
16658 int freq, int sig_dbm,
16659 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16660 {
16661 struct net_device *netdev = wdev->netdev;
16662 struct sk_buff *msg;
16663 void *hdr;
16664
16665 msg = nlmsg_new(100 + len, gfp);
16666 if (!msg)
16667 return -ENOMEM;
16668
16669 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16670 if (!hdr) {
16671 nlmsg_free(msg);
16672 return -ENOMEM;
16673 }
16674
16675 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16676 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16677 netdev->ifindex)) ||
16678 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16679 NL80211_ATTR_PAD) ||
16680 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16681 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16682 (sig_dbm &&
16683 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16684 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16685 (flags &&
16686 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16687 goto nla_put_failure;
16688
16689 genlmsg_end(msg, hdr);
16690
16691 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16692
16693 nla_put_failure:
16694 nlmsg_free(msg);
16695 return -ENOBUFS;
16696 }
16697
nl80211_frame_tx_status(struct wireless_dev * wdev,u64 cookie,const u8 * buf,size_t len,bool ack,gfp_t gfp,enum nl80211_commands command)16698 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16699 const u8 *buf, size_t len, bool ack,
16700 gfp_t gfp, enum nl80211_commands command)
16701 {
16702 struct wiphy *wiphy = wdev->wiphy;
16703 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16704 struct net_device *netdev = wdev->netdev;
16705 struct sk_buff *msg;
16706 void *hdr;
16707
16708 if (command == NL80211_CMD_FRAME_TX_STATUS)
16709 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16710 else
16711 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16712
16713 msg = nlmsg_new(100 + len, gfp);
16714 if (!msg)
16715 return;
16716
16717 hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16718 if (!hdr) {
16719 nlmsg_free(msg);
16720 return;
16721 }
16722
16723 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16724 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16725 netdev->ifindex)) ||
16726 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16727 NL80211_ATTR_PAD) ||
16728 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16729 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16730 NL80211_ATTR_PAD) ||
16731 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16732 goto nla_put_failure;
16733
16734 genlmsg_end(msg, hdr);
16735
16736 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16737 NL80211_MCGRP_MLME, gfp);
16738 return;
16739
16740 nla_put_failure:
16741 nlmsg_free(msg);
16742 }
16743
cfg80211_control_port_tx_status(struct wireless_dev * wdev,u64 cookie,const u8 * buf,size_t len,bool ack,gfp_t gfp)16744 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16745 const u8 *buf, size_t len, bool ack,
16746 gfp_t gfp)
16747 {
16748 nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16749 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16750 }
16751 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16752
cfg80211_mgmt_tx_status(struct wireless_dev * wdev,u64 cookie,const u8 * buf,size_t len,bool ack,gfp_t gfp)16753 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16754 const u8 *buf, size_t len, bool ack, gfp_t gfp)
16755 {
16756 nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16757 NL80211_CMD_FRAME_TX_STATUS);
16758 }
16759 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16760
__nl80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted,gfp_t gfp)16761 static int __nl80211_rx_control_port(struct net_device *dev,
16762 struct sk_buff *skb,
16763 bool unencrypted, gfp_t gfp)
16764 {
16765 struct wireless_dev *wdev = dev->ieee80211_ptr;
16766 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16767 struct ethhdr *ehdr = eth_hdr(skb);
16768 const u8 *addr = ehdr->h_source;
16769 u16 proto = be16_to_cpu(skb->protocol);
16770 struct sk_buff *msg;
16771 void *hdr;
16772 struct nlattr *frame;
16773
16774 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16775
16776 if (!nlportid)
16777 return -ENOENT;
16778
16779 msg = nlmsg_new(100 + skb->len, gfp);
16780 if (!msg)
16781 return -ENOMEM;
16782
16783 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16784 if (!hdr) {
16785 nlmsg_free(msg);
16786 return -ENOBUFS;
16787 }
16788
16789 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16790 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16791 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16792 NL80211_ATTR_PAD) ||
16793 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16794 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16795 (unencrypted && nla_put_flag(msg,
16796 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16797 goto nla_put_failure;
16798
16799 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16800 if (!frame)
16801 goto nla_put_failure;
16802
16803 skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16804 genlmsg_end(msg, hdr);
16805
16806 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16807
16808 nla_put_failure:
16809 nlmsg_free(msg);
16810 return -ENOBUFS;
16811 }
16812
cfg80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted)16813 bool cfg80211_rx_control_port(struct net_device *dev,
16814 struct sk_buff *skb, bool unencrypted)
16815 {
16816 int ret;
16817
16818 trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16819 ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16820 trace_cfg80211_return_bool(ret == 0);
16821 return ret == 0;
16822 }
16823 EXPORT_SYMBOL(cfg80211_rx_control_port);
16824
cfg80211_prepare_cqm(struct net_device * dev,const char * mac,gfp_t gfp)16825 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16826 const char *mac, gfp_t gfp)
16827 {
16828 struct wireless_dev *wdev = dev->ieee80211_ptr;
16829 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16830 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16831 void **cb;
16832
16833 if (!msg)
16834 return NULL;
16835
16836 cb = (void **)msg->cb;
16837
16838 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16839 if (!cb[0]) {
16840 nlmsg_free(msg);
16841 return NULL;
16842 }
16843
16844 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16845 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16846 goto nla_put_failure;
16847
16848 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16849 goto nla_put_failure;
16850
16851 cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16852 if (!cb[1])
16853 goto nla_put_failure;
16854
16855 cb[2] = rdev;
16856
16857 return msg;
16858 nla_put_failure:
16859 nlmsg_free(msg);
16860 return NULL;
16861 }
16862
cfg80211_send_cqm(struct sk_buff * msg,gfp_t gfp)16863 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16864 {
16865 void **cb = (void **)msg->cb;
16866 struct cfg80211_registered_device *rdev = cb[2];
16867
16868 nla_nest_end(msg, cb[1]);
16869 genlmsg_end(msg, cb[0]);
16870
16871 memset(msg->cb, 0, sizeof(msg->cb));
16872
16873 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16874 NL80211_MCGRP_MLME, gfp);
16875 }
16876
cfg80211_cqm_rssi_notify(struct net_device * dev,enum nl80211_cqm_rssi_threshold_event rssi_event,s32 rssi_level,gfp_t gfp)16877 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16878 enum nl80211_cqm_rssi_threshold_event rssi_event,
16879 s32 rssi_level, gfp_t gfp)
16880 {
16881 struct sk_buff *msg;
16882 struct wireless_dev *wdev = dev->ieee80211_ptr;
16883 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16884
16885 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16886
16887 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16888 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16889 return;
16890
16891 if (wdev->cqm_config) {
16892 wdev->cqm_config->last_rssi_event_value = rssi_level;
16893
16894 cfg80211_cqm_rssi_update(rdev, dev);
16895
16896 if (rssi_level == 0)
16897 rssi_level = wdev->cqm_config->last_rssi_event_value;
16898 }
16899
16900 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16901 if (!msg)
16902 return;
16903
16904 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16905 rssi_event))
16906 goto nla_put_failure;
16907
16908 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16909 rssi_level))
16910 goto nla_put_failure;
16911
16912 cfg80211_send_cqm(msg, gfp);
16913
16914 return;
16915
16916 nla_put_failure:
16917 nlmsg_free(msg);
16918 }
16919 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16920
cfg80211_cqm_txe_notify(struct net_device * dev,const u8 * peer,u32 num_packets,u32 rate,u32 intvl,gfp_t gfp)16921 void cfg80211_cqm_txe_notify(struct net_device *dev,
16922 const u8 *peer, u32 num_packets,
16923 u32 rate, u32 intvl, gfp_t gfp)
16924 {
16925 struct sk_buff *msg;
16926
16927 msg = cfg80211_prepare_cqm(dev, peer, gfp);
16928 if (!msg)
16929 return;
16930
16931 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16932 goto nla_put_failure;
16933
16934 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16935 goto nla_put_failure;
16936
16937 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16938 goto nla_put_failure;
16939
16940 cfg80211_send_cqm(msg, gfp);
16941 return;
16942
16943 nla_put_failure:
16944 nlmsg_free(msg);
16945 }
16946 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16947
cfg80211_cqm_pktloss_notify(struct net_device * dev,const u8 * peer,u32 num_packets,gfp_t gfp)16948 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16949 const u8 *peer, u32 num_packets, gfp_t gfp)
16950 {
16951 struct sk_buff *msg;
16952
16953 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16954
16955 msg = cfg80211_prepare_cqm(dev, peer, gfp);
16956 if (!msg)
16957 return;
16958
16959 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16960 goto nla_put_failure;
16961
16962 cfg80211_send_cqm(msg, gfp);
16963 return;
16964
16965 nla_put_failure:
16966 nlmsg_free(msg);
16967 }
16968 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16969
cfg80211_cqm_beacon_loss_notify(struct net_device * dev,gfp_t gfp)16970 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16971 {
16972 struct sk_buff *msg;
16973
16974 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16975 if (!msg)
16976 return;
16977
16978 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16979 goto nla_put_failure;
16980
16981 cfg80211_send_cqm(msg, gfp);
16982 return;
16983
16984 nla_put_failure:
16985 nlmsg_free(msg);
16986 }
16987 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16988
nl80211_gtk_rekey_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)16989 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16990 struct net_device *netdev, const u8 *bssid,
16991 const u8 *replay_ctr, gfp_t gfp)
16992 {
16993 struct sk_buff *msg;
16994 struct nlattr *rekey_attr;
16995 void *hdr;
16996
16997 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16998 if (!msg)
16999 return;
17000
17001 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
17002 if (!hdr) {
17003 nlmsg_free(msg);
17004 return;
17005 }
17006
17007 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17008 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17009 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17010 goto nla_put_failure;
17011
17012 rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
17013 if (!rekey_attr)
17014 goto nla_put_failure;
17015
17016 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
17017 NL80211_REPLAY_CTR_LEN, replay_ctr))
17018 goto nla_put_failure;
17019
17020 nla_nest_end(msg, rekey_attr);
17021
17022 genlmsg_end(msg, hdr);
17023
17024 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17025 NL80211_MCGRP_MLME, gfp);
17026 return;
17027
17028 nla_put_failure:
17029 nlmsg_free(msg);
17030 }
17031
cfg80211_gtk_rekey_notify(struct net_device * dev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)17032 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
17033 const u8 *replay_ctr, gfp_t gfp)
17034 {
17035 struct wireless_dev *wdev = dev->ieee80211_ptr;
17036 struct wiphy *wiphy = wdev->wiphy;
17037 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17038
17039 trace_cfg80211_gtk_rekey_notify(dev, bssid);
17040 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
17041 }
17042 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
17043
17044 static void
nl80211_pmksa_candidate_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,int index,const u8 * bssid,bool preauth,gfp_t gfp)17045 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
17046 struct net_device *netdev, int index,
17047 const u8 *bssid, bool preauth, gfp_t gfp)
17048 {
17049 struct sk_buff *msg;
17050 struct nlattr *attr;
17051 void *hdr;
17052
17053 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17054 if (!msg)
17055 return;
17056
17057 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
17058 if (!hdr) {
17059 nlmsg_free(msg);
17060 return;
17061 }
17062
17063 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17064 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17065 goto nla_put_failure;
17066
17067 attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
17068 if (!attr)
17069 goto nla_put_failure;
17070
17071 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
17072 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
17073 (preauth &&
17074 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
17075 goto nla_put_failure;
17076
17077 nla_nest_end(msg, attr);
17078
17079 genlmsg_end(msg, hdr);
17080
17081 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17082 NL80211_MCGRP_MLME, gfp);
17083 return;
17084
17085 nla_put_failure:
17086 nlmsg_free(msg);
17087 }
17088
cfg80211_pmksa_candidate_notify(struct net_device * dev,int index,const u8 * bssid,bool preauth,gfp_t gfp)17089 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
17090 const u8 *bssid, bool preauth, gfp_t gfp)
17091 {
17092 struct wireless_dev *wdev = dev->ieee80211_ptr;
17093 struct wiphy *wiphy = wdev->wiphy;
17094 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17095
17096 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
17097 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
17098 }
17099 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
17100
nl80211_ch_switch_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_chan_def * chandef,gfp_t gfp,enum nl80211_commands notif,u8 count)17101 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
17102 struct net_device *netdev,
17103 struct cfg80211_chan_def *chandef,
17104 gfp_t gfp,
17105 enum nl80211_commands notif,
17106 u8 count)
17107 {
17108 struct sk_buff *msg;
17109 void *hdr;
17110
17111 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17112 if (!msg)
17113 return;
17114
17115 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
17116 if (!hdr) {
17117 nlmsg_free(msg);
17118 return;
17119 }
17120
17121 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17122 goto nla_put_failure;
17123
17124 if (nl80211_send_chandef(msg, chandef))
17125 goto nla_put_failure;
17126
17127 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
17128 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
17129 goto nla_put_failure;
17130
17131 genlmsg_end(msg, hdr);
17132
17133 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17134 NL80211_MCGRP_MLME, gfp);
17135 return;
17136
17137 nla_put_failure:
17138 nlmsg_free(msg);
17139 }
17140
cfg80211_ch_switch_notify(struct net_device * dev,struct cfg80211_chan_def * chandef)17141 void cfg80211_ch_switch_notify(struct net_device *dev,
17142 struct cfg80211_chan_def *chandef)
17143 {
17144 struct wireless_dev *wdev = dev->ieee80211_ptr;
17145 struct wiphy *wiphy = wdev->wiphy;
17146 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17147
17148 ASSERT_WDEV_LOCK(wdev);
17149
17150 trace_cfg80211_ch_switch_notify(dev, chandef);
17151
17152 wdev->chandef = *chandef;
17153 wdev->preset_chandef = *chandef;
17154
17155 if ((wdev->iftype == NL80211_IFTYPE_STATION ||
17156 wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
17157 !WARN_ON(!wdev->current_bss))
17158 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
17159
17160 cfg80211_sched_dfs_chan_update(rdev);
17161
17162 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17163 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
17164 }
17165 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
17166
cfg80211_ch_switch_started_notify(struct net_device * dev,struct cfg80211_chan_def * chandef,u8 count)17167 void cfg80211_ch_switch_started_notify(struct net_device *dev,
17168 struct cfg80211_chan_def *chandef,
17169 u8 count)
17170 {
17171 struct wireless_dev *wdev = dev->ieee80211_ptr;
17172 struct wiphy *wiphy = wdev->wiphy;
17173 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17174
17175 trace_cfg80211_ch_switch_started_notify(dev, chandef);
17176
17177 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17178 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
17179 }
17180 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
17181
17182 void
nl80211_radar_notify(struct cfg80211_registered_device * rdev,const struct cfg80211_chan_def * chandef,enum nl80211_radar_event event,struct net_device * netdev,gfp_t gfp)17183 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
17184 const struct cfg80211_chan_def *chandef,
17185 enum nl80211_radar_event event,
17186 struct net_device *netdev, gfp_t gfp)
17187 {
17188 struct sk_buff *msg;
17189 void *hdr;
17190
17191 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17192 if (!msg)
17193 return;
17194
17195 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
17196 if (!hdr) {
17197 nlmsg_free(msg);
17198 return;
17199 }
17200
17201 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17202 goto nla_put_failure;
17203
17204 /* NOP and radar events don't need a netdev parameter */
17205 if (netdev) {
17206 struct wireless_dev *wdev = netdev->ieee80211_ptr;
17207
17208 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17209 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17210 NL80211_ATTR_PAD))
17211 goto nla_put_failure;
17212 }
17213
17214 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
17215 goto nla_put_failure;
17216
17217 if (nl80211_send_chandef(msg, chandef))
17218 goto nla_put_failure;
17219
17220 genlmsg_end(msg, hdr);
17221
17222 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17223 NL80211_MCGRP_MLME, gfp);
17224 return;
17225
17226 nla_put_failure:
17227 nlmsg_free(msg);
17228 }
17229
cfg80211_sta_opmode_change_notify(struct net_device * dev,const u8 * mac,struct sta_opmode_info * sta_opmode,gfp_t gfp)17230 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
17231 struct sta_opmode_info *sta_opmode,
17232 gfp_t gfp)
17233 {
17234 struct sk_buff *msg;
17235 struct wireless_dev *wdev = dev->ieee80211_ptr;
17236 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17237 void *hdr;
17238
17239 if (WARN_ON(!mac))
17240 return;
17241
17242 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17243 if (!msg)
17244 return;
17245
17246 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
17247 if (!hdr) {
17248 nlmsg_free(msg);
17249 return;
17250 }
17251
17252 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17253 goto nla_put_failure;
17254
17255 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17256 goto nla_put_failure;
17257
17258 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17259 goto nla_put_failure;
17260
17261 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
17262 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
17263 goto nla_put_failure;
17264
17265 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
17266 nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
17267 goto nla_put_failure;
17268
17269 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
17270 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
17271 goto nla_put_failure;
17272
17273 genlmsg_end(msg, hdr);
17274
17275 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17276 NL80211_MCGRP_MLME, gfp);
17277
17278 return;
17279
17280 nla_put_failure:
17281 nlmsg_free(msg);
17282 }
17283 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
17284
cfg80211_probe_status(struct net_device * dev,const u8 * addr,u64 cookie,bool acked,s32 ack_signal,bool is_valid_ack_signal,gfp_t gfp)17285 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
17286 u64 cookie, bool acked, s32 ack_signal,
17287 bool is_valid_ack_signal, gfp_t gfp)
17288 {
17289 struct wireless_dev *wdev = dev->ieee80211_ptr;
17290 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17291 struct sk_buff *msg;
17292 void *hdr;
17293
17294 trace_cfg80211_probe_status(dev, addr, cookie, acked);
17295
17296 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17297
17298 if (!msg)
17299 return;
17300
17301 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
17302 if (!hdr) {
17303 nlmsg_free(msg);
17304 return;
17305 }
17306
17307 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17308 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17309 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17310 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17311 NL80211_ATTR_PAD) ||
17312 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
17313 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
17314 ack_signal)))
17315 goto nla_put_failure;
17316
17317 genlmsg_end(msg, hdr);
17318
17319 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17320 NL80211_MCGRP_MLME, gfp);
17321 return;
17322
17323 nla_put_failure:
17324 nlmsg_free(msg);
17325 }
17326 EXPORT_SYMBOL(cfg80211_probe_status);
17327
cfg80211_report_obss_beacon_khz(struct wiphy * wiphy,const u8 * frame,size_t len,int freq,int sig_dbm)17328 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17329 size_t len, int freq, int sig_dbm)
17330 {
17331 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17332 struct sk_buff *msg;
17333 void *hdr;
17334 struct cfg80211_beacon_registration *reg;
17335
17336 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17337
17338 spin_lock_bh(&rdev->beacon_registrations_lock);
17339 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17340 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17341 if (!msg) {
17342 spin_unlock_bh(&rdev->beacon_registrations_lock);
17343 return;
17344 }
17345
17346 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17347 if (!hdr)
17348 goto nla_put_failure;
17349
17350 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17351 (freq &&
17352 (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17353 KHZ_TO_MHZ(freq)) ||
17354 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17355 freq % 1000))) ||
17356 (sig_dbm &&
17357 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17358 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17359 goto nla_put_failure;
17360
17361 genlmsg_end(msg, hdr);
17362
17363 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17364 }
17365 spin_unlock_bh(&rdev->beacon_registrations_lock);
17366 return;
17367
17368 nla_put_failure:
17369 spin_unlock_bh(&rdev->beacon_registrations_lock);
17370 nlmsg_free(msg);
17371 }
17372 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17373
17374 #ifdef CONFIG_PM
cfg80211_net_detect_results(struct sk_buff * msg,struct cfg80211_wowlan_wakeup * wakeup)17375 static int cfg80211_net_detect_results(struct sk_buff *msg,
17376 struct cfg80211_wowlan_wakeup *wakeup)
17377 {
17378 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17379 struct nlattr *nl_results, *nl_match, *nl_freqs;
17380 int i, j;
17381
17382 nl_results = nla_nest_start_noflag(msg,
17383 NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17384 if (!nl_results)
17385 return -EMSGSIZE;
17386
17387 for (i = 0; i < nd->n_matches; i++) {
17388 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17389
17390 nl_match = nla_nest_start_noflag(msg, i);
17391 if (!nl_match)
17392 break;
17393
17394 /* The SSID attribute is optional in nl80211, but for
17395 * simplicity reasons it's always present in the
17396 * cfg80211 structure. If a driver can't pass the
17397 * SSID, that needs to be changed. A zero length SSID
17398 * is still a valid SSID (wildcard), so it cannot be
17399 * used for this purpose.
17400 */
17401 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17402 match->ssid.ssid)) {
17403 nla_nest_cancel(msg, nl_match);
17404 goto out;
17405 }
17406
17407 if (match->n_channels) {
17408 nl_freqs = nla_nest_start_noflag(msg,
17409 NL80211_ATTR_SCAN_FREQUENCIES);
17410 if (!nl_freqs) {
17411 nla_nest_cancel(msg, nl_match);
17412 goto out;
17413 }
17414
17415 for (j = 0; j < match->n_channels; j++) {
17416 if (nla_put_u32(msg, j, match->channels[j])) {
17417 nla_nest_cancel(msg, nl_freqs);
17418 nla_nest_cancel(msg, nl_match);
17419 goto out;
17420 }
17421 }
17422
17423 nla_nest_end(msg, nl_freqs);
17424 }
17425
17426 nla_nest_end(msg, nl_match);
17427 }
17428
17429 out:
17430 nla_nest_end(msg, nl_results);
17431 return 0;
17432 }
17433
cfg80211_report_wowlan_wakeup(struct wireless_dev * wdev,struct cfg80211_wowlan_wakeup * wakeup,gfp_t gfp)17434 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17435 struct cfg80211_wowlan_wakeup *wakeup,
17436 gfp_t gfp)
17437 {
17438 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17439 struct sk_buff *msg;
17440 void *hdr;
17441 int size = 200;
17442
17443 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17444
17445 if (wakeup)
17446 size += wakeup->packet_present_len;
17447
17448 msg = nlmsg_new(size, gfp);
17449 if (!msg)
17450 return;
17451
17452 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17453 if (!hdr)
17454 goto free_msg;
17455
17456 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17457 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17458 NL80211_ATTR_PAD))
17459 goto free_msg;
17460
17461 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17462 wdev->netdev->ifindex))
17463 goto free_msg;
17464
17465 if (wakeup) {
17466 struct nlattr *reasons;
17467
17468 reasons = nla_nest_start_noflag(msg,
17469 NL80211_ATTR_WOWLAN_TRIGGERS);
17470 if (!reasons)
17471 goto free_msg;
17472
17473 if (wakeup->disconnect &&
17474 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17475 goto free_msg;
17476 if (wakeup->magic_pkt &&
17477 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17478 goto free_msg;
17479 if (wakeup->gtk_rekey_failure &&
17480 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17481 goto free_msg;
17482 if (wakeup->eap_identity_req &&
17483 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17484 goto free_msg;
17485 if (wakeup->four_way_handshake &&
17486 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17487 goto free_msg;
17488 if (wakeup->rfkill_release &&
17489 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17490 goto free_msg;
17491
17492 if (wakeup->pattern_idx >= 0 &&
17493 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17494 wakeup->pattern_idx))
17495 goto free_msg;
17496
17497 if (wakeup->tcp_match &&
17498 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17499 goto free_msg;
17500
17501 if (wakeup->tcp_connlost &&
17502 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17503 goto free_msg;
17504
17505 if (wakeup->tcp_nomoretokens &&
17506 nla_put_flag(msg,
17507 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17508 goto free_msg;
17509
17510 if (wakeup->packet) {
17511 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17512 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17513
17514 if (!wakeup->packet_80211) {
17515 pkt_attr =
17516 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17517 len_attr =
17518 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17519 }
17520
17521 if (wakeup->packet_len &&
17522 nla_put_u32(msg, len_attr, wakeup->packet_len))
17523 goto free_msg;
17524
17525 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17526 wakeup->packet))
17527 goto free_msg;
17528 }
17529
17530 if (wakeup->net_detect &&
17531 cfg80211_net_detect_results(msg, wakeup))
17532 goto free_msg;
17533
17534 nla_nest_end(msg, reasons);
17535 }
17536
17537 genlmsg_end(msg, hdr);
17538
17539 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17540 NL80211_MCGRP_MLME, gfp);
17541 return;
17542
17543 free_msg:
17544 nlmsg_free(msg);
17545 }
17546 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17547 #endif
17548
cfg80211_tdls_oper_request(struct net_device * dev,const u8 * peer,enum nl80211_tdls_operation oper,u16 reason_code,gfp_t gfp)17549 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17550 enum nl80211_tdls_operation oper,
17551 u16 reason_code, gfp_t gfp)
17552 {
17553 struct wireless_dev *wdev = dev->ieee80211_ptr;
17554 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17555 struct sk_buff *msg;
17556 void *hdr;
17557
17558 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17559 reason_code);
17560
17561 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17562 if (!msg)
17563 return;
17564
17565 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17566 if (!hdr) {
17567 nlmsg_free(msg);
17568 return;
17569 }
17570
17571 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17572 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17573 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17574 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17575 (reason_code > 0 &&
17576 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17577 goto nla_put_failure;
17578
17579 genlmsg_end(msg, hdr);
17580
17581 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17582 NL80211_MCGRP_MLME, gfp);
17583 return;
17584
17585 nla_put_failure:
17586 nlmsg_free(msg);
17587 }
17588 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17589
nl80211_netlink_notify(struct notifier_block * nb,unsigned long state,void * _notify)17590 static int nl80211_netlink_notify(struct notifier_block * nb,
17591 unsigned long state,
17592 void *_notify)
17593 {
17594 struct netlink_notify *notify = _notify;
17595 struct cfg80211_registered_device *rdev;
17596 struct wireless_dev *wdev;
17597 struct cfg80211_beacon_registration *reg, *tmp;
17598
17599 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17600 return NOTIFY_DONE;
17601
17602 rcu_read_lock();
17603
17604 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17605 struct cfg80211_sched_scan_request *sched_scan_req;
17606
17607 list_for_each_entry_rcu(sched_scan_req,
17608 &rdev->sched_scan_req_list,
17609 list) {
17610 if (sched_scan_req->owner_nlportid == notify->portid) {
17611 sched_scan_req->nl_owner_dead = true;
17612 schedule_work(&rdev->sched_scan_stop_wk);
17613 }
17614 }
17615
17616 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17617 cfg80211_mlme_unregister_socket(wdev, notify->portid);
17618
17619 if (wdev->owner_nlportid == notify->portid) {
17620 wdev->nl_owner_dead = true;
17621 schedule_work(&rdev->destroy_work);
17622 } else if (wdev->conn_owner_nlportid == notify->portid) {
17623 schedule_work(&wdev->disconnect_wk);
17624 }
17625
17626 cfg80211_release_pmsr(wdev, notify->portid);
17627 }
17628
17629 spin_lock_bh(&rdev->beacon_registrations_lock);
17630 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17631 list) {
17632 if (reg->nlportid == notify->portid) {
17633 list_del(®->list);
17634 kfree(reg);
17635 break;
17636 }
17637 }
17638 spin_unlock_bh(&rdev->beacon_registrations_lock);
17639 }
17640
17641 rcu_read_unlock();
17642
17643 /*
17644 * It is possible that the user space process that is controlling the
17645 * indoor setting disappeared, so notify the regulatory core.
17646 */
17647 regulatory_netlink_notify(notify->portid);
17648 return NOTIFY_OK;
17649 }
17650
17651 static struct notifier_block nl80211_netlink_notifier = {
17652 .notifier_call = nl80211_netlink_notify,
17653 };
17654
cfg80211_ft_event(struct net_device * netdev,struct cfg80211_ft_event_params * ft_event)17655 void cfg80211_ft_event(struct net_device *netdev,
17656 struct cfg80211_ft_event_params *ft_event)
17657 {
17658 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17659 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17660 struct sk_buff *msg;
17661 void *hdr;
17662
17663 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17664
17665 if (!ft_event->target_ap)
17666 return;
17667
17668 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17669 GFP_KERNEL);
17670 if (!msg)
17671 return;
17672
17673 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17674 if (!hdr)
17675 goto out;
17676
17677 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17678 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17679 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17680 goto out;
17681
17682 if (ft_event->ies &&
17683 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17684 goto out;
17685 if (ft_event->ric_ies &&
17686 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17687 ft_event->ric_ies))
17688 goto out;
17689
17690 genlmsg_end(msg, hdr);
17691
17692 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17693 NL80211_MCGRP_MLME, GFP_KERNEL);
17694 return;
17695 out:
17696 nlmsg_free(msg);
17697 }
17698 EXPORT_SYMBOL(cfg80211_ft_event);
17699
cfg80211_crit_proto_stopped(struct wireless_dev * wdev,gfp_t gfp)17700 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17701 {
17702 struct cfg80211_registered_device *rdev;
17703 struct sk_buff *msg;
17704 void *hdr;
17705 u32 nlportid;
17706
17707 rdev = wiphy_to_rdev(wdev->wiphy);
17708 if (!rdev->crit_proto_nlportid)
17709 return;
17710
17711 nlportid = rdev->crit_proto_nlportid;
17712 rdev->crit_proto_nlportid = 0;
17713
17714 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17715 if (!msg)
17716 return;
17717
17718 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17719 if (!hdr)
17720 goto nla_put_failure;
17721
17722 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17723 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17724 NL80211_ATTR_PAD))
17725 goto nla_put_failure;
17726
17727 genlmsg_end(msg, hdr);
17728
17729 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17730 return;
17731
17732 nla_put_failure:
17733 nlmsg_free(msg);
17734 }
17735 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17736
nl80211_send_ap_stopped(struct wireless_dev * wdev)17737 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17738 {
17739 struct wiphy *wiphy = wdev->wiphy;
17740 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17741 struct sk_buff *msg;
17742 void *hdr;
17743
17744 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17745 if (!msg)
17746 return;
17747
17748 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17749 if (!hdr)
17750 goto out;
17751
17752 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17753 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17754 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17755 NL80211_ATTR_PAD))
17756 goto out;
17757
17758 genlmsg_end(msg, hdr);
17759
17760 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17761 NL80211_MCGRP_MLME, GFP_KERNEL);
17762 return;
17763 out:
17764 nlmsg_free(msg);
17765 }
17766
cfg80211_external_auth_request(struct net_device * dev,struct cfg80211_external_auth_params * params,gfp_t gfp)17767 int cfg80211_external_auth_request(struct net_device *dev,
17768 struct cfg80211_external_auth_params *params,
17769 gfp_t gfp)
17770 {
17771 struct wireless_dev *wdev = dev->ieee80211_ptr;
17772 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17773 struct sk_buff *msg;
17774 void *hdr;
17775
17776 if (!wdev->conn_owner_nlportid)
17777 return -EINVAL;
17778
17779 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17780 if (!msg)
17781 return -ENOMEM;
17782
17783 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17784 if (!hdr)
17785 goto nla_put_failure;
17786
17787 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17788 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17789 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17790 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17791 params->action) ||
17792 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17793 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17794 params->ssid.ssid))
17795 goto nla_put_failure;
17796
17797 genlmsg_end(msg, hdr);
17798 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17799 wdev->conn_owner_nlportid);
17800 return 0;
17801
17802 nla_put_failure:
17803 nlmsg_free(msg);
17804 return -ENOBUFS;
17805 }
17806 EXPORT_SYMBOL(cfg80211_external_auth_request);
17807
cfg80211_update_owe_info_event(struct net_device * netdev,struct cfg80211_update_owe_info * owe_info,gfp_t gfp)17808 void cfg80211_update_owe_info_event(struct net_device *netdev,
17809 struct cfg80211_update_owe_info *owe_info,
17810 gfp_t gfp)
17811 {
17812 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17813 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17814 struct sk_buff *msg;
17815 void *hdr;
17816
17817 trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17818
17819 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17820 if (!msg)
17821 return;
17822
17823 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17824 if (!hdr)
17825 goto nla_put_failure;
17826
17827 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17828 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17829 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17830 goto nla_put_failure;
17831
17832 if (!owe_info->ie_len ||
17833 nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17834 goto nla_put_failure;
17835
17836 genlmsg_end(msg, hdr);
17837
17838 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17839 NL80211_MCGRP_MLME, gfp);
17840 return;
17841
17842 nla_put_failure:
17843 genlmsg_cancel(msg, hdr);
17844 nlmsg_free(msg);
17845 }
17846 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17847
17848 /* initialisation/exit functions */
17849
nl80211_init(void)17850 int __init nl80211_init(void)
17851 {
17852 int err;
17853
17854 err = genl_register_family(&nl80211_fam);
17855 if (err)
17856 return err;
17857
17858 err = netlink_register_notifier(&nl80211_netlink_notifier);
17859 if (err)
17860 goto err_out;
17861
17862 return 0;
17863 err_out:
17864 genl_unregister_family(&nl80211_fam);
17865 return err;
17866 }
17867
nl80211_exit(void)17868 void nl80211_exit(void)
17869 {
17870 netlink_unregister_notifier(&nl80211_netlink_notifier);
17871 genl_unregister_family(&nl80211_fam);
17872 }
17873