1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4 #include "i40e.h"
5
6 /*********************notification routines***********************/
7
8 /**
9 * i40e_vc_vf_broadcast
10 * @pf: pointer to the PF structure
11 * @v_opcode: operation code
12 * @v_retval: return value
13 * @msg: pointer to the msg buffer
14 * @msglen: msg length
15 *
16 * send a message to all VFs on a given PF
17 **/
i40e_vc_vf_broadcast(struct i40e_pf * pf,enum virtchnl_ops v_opcode,i40e_status v_retval,u8 * msg,u16 msglen)18 static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
19 enum virtchnl_ops v_opcode,
20 i40e_status v_retval, u8 *msg,
21 u16 msglen)
22 {
23 struct i40e_hw *hw = &pf->hw;
24 struct i40e_vf *vf = pf->vf;
25 int i;
26
27 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
28 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
29 /* Not all vfs are enabled so skip the ones that are not */
30 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
31 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
32 continue;
33
34 /* Ignore return value on purpose - a given VF may fail, but
35 * we need to keep going and send to all of them
36 */
37 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
38 msg, msglen, NULL);
39 }
40 }
41
42 /**
43 * i40e_vc_notify_vf_link_state
44 * @vf: pointer to the VF structure
45 *
46 * send a link status message to a single VF
47 **/
i40e_vc_notify_vf_link_state(struct i40e_vf * vf)48 static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
49 {
50 struct virtchnl_pf_event pfe;
51 struct i40e_pf *pf = vf->pf;
52 struct i40e_hw *hw = &pf->hw;
53 struct i40e_link_status *ls = &pf->hw.phy.link_info;
54 int abs_vf_id = vf->vf_id + (int)hw->func_caps.vf_base_id;
55
56 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
57 pfe.severity = PF_EVENT_SEVERITY_INFO;
58 if (vf->link_forced) {
59 pfe.event_data.link_event.link_status = vf->link_up;
60 pfe.event_data.link_event.link_speed =
61 (vf->link_up ? VIRTCHNL_LINK_SPEED_40GB : 0);
62 } else {
63 pfe.event_data.link_event.link_status =
64 ls->link_info & I40E_AQ_LINK_UP;
65 pfe.event_data.link_event.link_speed =
66 i40e_virtchnl_link_speed(ls->link_speed);
67 }
68 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
69 0, (u8 *)&pfe, sizeof(pfe), NULL);
70 }
71
72 /**
73 * i40e_vc_notify_link_state
74 * @pf: pointer to the PF structure
75 *
76 * send a link status message to all VFs on a given PF
77 **/
i40e_vc_notify_link_state(struct i40e_pf * pf)78 void i40e_vc_notify_link_state(struct i40e_pf *pf)
79 {
80 int i;
81
82 for (i = 0; i < pf->num_alloc_vfs; i++)
83 i40e_vc_notify_vf_link_state(&pf->vf[i]);
84 }
85
86 /**
87 * i40e_vc_notify_reset
88 * @pf: pointer to the PF structure
89 *
90 * indicate a pending reset to all VFs on a given PF
91 **/
i40e_vc_notify_reset(struct i40e_pf * pf)92 void i40e_vc_notify_reset(struct i40e_pf *pf)
93 {
94 struct virtchnl_pf_event pfe;
95
96 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
97 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
98 i40e_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, 0,
99 (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
100 }
101
102 /**
103 * i40e_vc_notify_vf_reset
104 * @vf: pointer to the VF structure
105 *
106 * indicate a pending reset to the given VF
107 **/
i40e_vc_notify_vf_reset(struct i40e_vf * vf)108 void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
109 {
110 struct virtchnl_pf_event pfe;
111 int abs_vf_id;
112
113 /* validate the request */
114 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
115 return;
116
117 /* verify if the VF is in either init or active before proceeding */
118 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) &&
119 !test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states))
120 return;
121
122 abs_vf_id = vf->vf_id + (int)vf->pf->hw.func_caps.vf_base_id;
123
124 pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
125 pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
126 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, VIRTCHNL_OP_EVENT,
127 0, (u8 *)&pfe,
128 sizeof(struct virtchnl_pf_event), NULL);
129 }
130 /***********************misc routines*****************************/
131
132 /**
133 * i40e_vc_reset_vf
134 * @vf: pointer to the VF info
135 * @notify_vf: notify vf about reset or not
136 * Reset VF handler.
137 **/
i40e_vc_reset_vf(struct i40e_vf * vf,bool notify_vf)138 static void i40e_vc_reset_vf(struct i40e_vf *vf, bool notify_vf)
139 {
140 struct i40e_pf *pf = vf->pf;
141 int i;
142
143 if (notify_vf)
144 i40e_vc_notify_vf_reset(vf);
145
146 /* We want to ensure that an actual reset occurs initiated after this
147 * function was called. However, we do not want to wait forever, so
148 * we'll give a reasonable time and print a message if we failed to
149 * ensure a reset.
150 */
151 for (i = 0; i < 20; i++) {
152 /* If PF is in VFs releasing state reset VF is impossible,
153 * so leave it.
154 */
155 if (test_bit(__I40E_VFS_RELEASING, pf->state))
156 return;
157 if (i40e_reset_vf(vf, false))
158 return;
159 usleep_range(10000, 20000);
160 }
161
162 if (notify_vf)
163 dev_warn(&vf->pf->pdev->dev,
164 "Failed to initiate reset for VF %d after 200 milliseconds\n",
165 vf->vf_id);
166 else
167 dev_dbg(&vf->pf->pdev->dev,
168 "Failed to initiate reset for VF %d after 200 milliseconds\n",
169 vf->vf_id);
170 }
171
172 /**
173 * i40e_vc_isvalid_vsi_id
174 * @vf: pointer to the VF info
175 * @vsi_id: VF relative VSI id
176 *
177 * check for the valid VSI id
178 **/
i40e_vc_isvalid_vsi_id(struct i40e_vf * vf,u16 vsi_id)179 static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
180 {
181 struct i40e_pf *pf = vf->pf;
182 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
183
184 return (vsi && (vsi->vf_id == vf->vf_id));
185 }
186
187 /**
188 * i40e_vc_isvalid_queue_id
189 * @vf: pointer to the VF info
190 * @vsi_id: vsi id
191 * @qid: vsi relative queue id
192 *
193 * check for the valid queue id
194 **/
i40e_vc_isvalid_queue_id(struct i40e_vf * vf,u16 vsi_id,u16 qid)195 static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
196 u16 qid)
197 {
198 struct i40e_pf *pf = vf->pf;
199 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
200
201 return (vsi && (qid < vsi->alloc_queue_pairs));
202 }
203
204 /**
205 * i40e_vc_isvalid_vector_id
206 * @vf: pointer to the VF info
207 * @vector_id: VF relative vector id
208 *
209 * check for the valid vector id
210 **/
i40e_vc_isvalid_vector_id(struct i40e_vf * vf,u32 vector_id)211 static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u32 vector_id)
212 {
213 struct i40e_pf *pf = vf->pf;
214
215 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
216 }
217
218 /***********************vf resource mgmt routines*****************/
219
220 /**
221 * i40e_vc_get_pf_queue_id
222 * @vf: pointer to the VF info
223 * @vsi_id: id of VSI as provided by the FW
224 * @vsi_queue_id: vsi relative queue id
225 *
226 * return PF relative queue id
227 **/
i40e_vc_get_pf_queue_id(struct i40e_vf * vf,u16 vsi_id,u8 vsi_queue_id)228 static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
229 u8 vsi_queue_id)
230 {
231 struct i40e_pf *pf = vf->pf;
232 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
233 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
234
235 if (!vsi)
236 return pf_queue_id;
237
238 if (le16_to_cpu(vsi->info.mapping_flags) &
239 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
240 pf_queue_id =
241 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
242 else
243 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
244 vsi_queue_id;
245
246 return pf_queue_id;
247 }
248
249 /**
250 * i40e_get_real_pf_qid
251 * @vf: pointer to the VF info
252 * @vsi_id: vsi id
253 * @queue_id: queue number
254 *
255 * wrapper function to get pf_queue_id handling ADq code as well
256 **/
i40e_get_real_pf_qid(struct i40e_vf * vf,u16 vsi_id,u16 queue_id)257 static u16 i40e_get_real_pf_qid(struct i40e_vf *vf, u16 vsi_id, u16 queue_id)
258 {
259 int i;
260
261 if (vf->adq_enabled) {
262 /* Although VF considers all the queues(can be 1 to 16) as its
263 * own but they may actually belong to different VSIs(up to 4).
264 * We need to find which queues belongs to which VSI.
265 */
266 for (i = 0; i < vf->num_tc; i++) {
267 if (queue_id < vf->ch[i].num_qps) {
268 vsi_id = vf->ch[i].vsi_id;
269 break;
270 }
271 /* find right queue id which is relative to a
272 * given VSI.
273 */
274 queue_id -= vf->ch[i].num_qps;
275 }
276 }
277
278 return i40e_vc_get_pf_queue_id(vf, vsi_id, queue_id);
279 }
280
281 /**
282 * i40e_config_irq_link_list
283 * @vf: pointer to the VF info
284 * @vsi_id: id of VSI as given by the FW
285 * @vecmap: irq map info
286 *
287 * configure irq link list from the map
288 **/
i40e_config_irq_link_list(struct i40e_vf * vf,u16 vsi_id,struct virtchnl_vector_map * vecmap)289 static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
290 struct virtchnl_vector_map *vecmap)
291 {
292 unsigned long linklistmap = 0, tempmap;
293 struct i40e_pf *pf = vf->pf;
294 struct i40e_hw *hw = &pf->hw;
295 u16 vsi_queue_id, pf_queue_id;
296 enum i40e_queue_type qtype;
297 u16 next_q, vector_id, size;
298 u32 reg, reg_idx;
299 u16 itr_idx = 0;
300
301 vector_id = vecmap->vector_id;
302 /* setup the head */
303 if (0 == vector_id)
304 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
305 else
306 reg_idx = I40E_VPINT_LNKLSTN(
307 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
308 (vector_id - 1));
309
310 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
311 /* Special case - No queues mapped on this vector */
312 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
313 goto irq_list_done;
314 }
315 tempmap = vecmap->rxq_map;
316 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
317 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
318 vsi_queue_id));
319 }
320
321 tempmap = vecmap->txq_map;
322 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
323 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
324 vsi_queue_id + 1));
325 }
326
327 size = I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES;
328 next_q = find_first_bit(&linklistmap, size);
329 if (unlikely(next_q == size))
330 goto irq_list_done;
331
332 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
333 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
334 pf_queue_id = i40e_get_real_pf_qid(vf, vsi_id, vsi_queue_id);
335 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
336
337 wr32(hw, reg_idx, reg);
338
339 while (next_q < size) {
340 switch (qtype) {
341 case I40E_QUEUE_TYPE_RX:
342 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
343 itr_idx = vecmap->rxitr_idx;
344 break;
345 case I40E_QUEUE_TYPE_TX:
346 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
347 itr_idx = vecmap->txitr_idx;
348 break;
349 default:
350 break;
351 }
352
353 next_q = find_next_bit(&linklistmap, size, next_q + 1);
354 if (next_q < size) {
355 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
356 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
357 pf_queue_id = i40e_get_real_pf_qid(vf,
358 vsi_id,
359 vsi_queue_id);
360 } else {
361 pf_queue_id = I40E_QUEUE_END_OF_LIST;
362 qtype = 0;
363 }
364
365 /* format for the RQCTL & TQCTL regs is same */
366 reg = (vector_id) |
367 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
368 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
369 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
370 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
371 wr32(hw, reg_idx, reg);
372 }
373
374 /* if the vf is running in polling mode and using interrupt zero,
375 * need to disable auto-mask on enabling zero interrupt for VFs.
376 */
377 if ((vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
378 (vector_id == 0)) {
379 reg = rd32(hw, I40E_GLINT_CTL);
380 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
381 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
382 wr32(hw, I40E_GLINT_CTL, reg);
383 }
384 }
385
386 irq_list_done:
387 i40e_flush(hw);
388 }
389
390 /**
391 * i40e_release_iwarp_qvlist
392 * @vf: pointer to the VF.
393 *
394 **/
i40e_release_iwarp_qvlist(struct i40e_vf * vf)395 static void i40e_release_iwarp_qvlist(struct i40e_vf *vf)
396 {
397 struct i40e_pf *pf = vf->pf;
398 struct virtchnl_iwarp_qvlist_info *qvlist_info = vf->qvlist_info;
399 u32 msix_vf;
400 u32 i;
401
402 if (!vf->qvlist_info)
403 return;
404
405 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
406 for (i = 0; i < qvlist_info->num_vectors; i++) {
407 struct virtchnl_iwarp_qv_info *qv_info;
408 u32 next_q_index, next_q_type;
409 struct i40e_hw *hw = &pf->hw;
410 u32 v_idx, reg_idx, reg;
411
412 qv_info = &qvlist_info->qv_info[i];
413 if (!qv_info)
414 continue;
415 v_idx = qv_info->v_idx;
416 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
417 /* Figure out the queue after CEQ and make that the
418 * first queue.
419 */
420 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
421 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
422 next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
423 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
424 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
425 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
426
427 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
428 reg = (next_q_index &
429 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
430 (next_q_type <<
431 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
432
433 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
434 }
435 }
436 kfree(vf->qvlist_info);
437 vf->qvlist_info = NULL;
438 }
439
440 /**
441 * i40e_config_iwarp_qvlist
442 * @vf: pointer to the VF info
443 * @qvlist_info: queue and vector list
444 *
445 * Return 0 on success or < 0 on error
446 **/
i40e_config_iwarp_qvlist(struct i40e_vf * vf,struct virtchnl_iwarp_qvlist_info * qvlist_info)447 static int i40e_config_iwarp_qvlist(struct i40e_vf *vf,
448 struct virtchnl_iwarp_qvlist_info *qvlist_info)
449 {
450 struct i40e_pf *pf = vf->pf;
451 struct i40e_hw *hw = &pf->hw;
452 struct virtchnl_iwarp_qv_info *qv_info;
453 u32 v_idx, i, reg_idx, reg;
454 u32 next_q_idx, next_q_type;
455 u32 msix_vf;
456 int ret = 0;
457
458 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
459
460 if (qvlist_info->num_vectors > msix_vf) {
461 dev_warn(&pf->pdev->dev,
462 "Incorrect number of iwarp vectors %u. Maximum %u allowed.\n",
463 qvlist_info->num_vectors,
464 msix_vf);
465 ret = -EINVAL;
466 goto err_out;
467 }
468
469 kfree(vf->qvlist_info);
470 vf->qvlist_info = kzalloc(struct_size(vf->qvlist_info, qv_info,
471 qvlist_info->num_vectors - 1),
472 GFP_KERNEL);
473 if (!vf->qvlist_info) {
474 ret = -ENOMEM;
475 goto err_out;
476 }
477 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
478
479 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
480 for (i = 0; i < qvlist_info->num_vectors; i++) {
481 qv_info = &qvlist_info->qv_info[i];
482 if (!qv_info)
483 continue;
484
485 /* Validate vector id belongs to this vf */
486 if (!i40e_vc_isvalid_vector_id(vf, qv_info->v_idx)) {
487 ret = -EINVAL;
488 goto err_free;
489 }
490
491 v_idx = qv_info->v_idx;
492
493 vf->qvlist_info->qv_info[i] = *qv_info;
494
495 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
496 /* We might be sharing the interrupt, so get the first queue
497 * index and type, push it down the list by adding the new
498 * queue on top. Also link it with the new queue in CEQCTL.
499 */
500 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
501 next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
502 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
503 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
504 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
505
506 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
507 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
508 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
509 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
510 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
511 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
512 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
513 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
514
515 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
516 reg = (qv_info->ceq_idx &
517 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
518 (I40E_QUEUE_TYPE_PE_CEQ <<
519 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
520 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
521 }
522
523 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
524 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
525 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
526 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
527
528 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
529 }
530 }
531
532 return 0;
533 err_free:
534 kfree(vf->qvlist_info);
535 vf->qvlist_info = NULL;
536 err_out:
537 return ret;
538 }
539
540 /**
541 * i40e_config_vsi_tx_queue
542 * @vf: pointer to the VF info
543 * @vsi_id: id of VSI as provided by the FW
544 * @vsi_queue_id: vsi relative queue index
545 * @info: config. info
546 *
547 * configure tx queue
548 **/
i40e_config_vsi_tx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_txq_info * info)549 static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
550 u16 vsi_queue_id,
551 struct virtchnl_txq_info *info)
552 {
553 struct i40e_pf *pf = vf->pf;
554 struct i40e_hw *hw = &pf->hw;
555 struct i40e_hmc_obj_txq tx_ctx;
556 struct i40e_vsi *vsi;
557 u16 pf_queue_id;
558 u32 qtx_ctl;
559 int ret = 0;
560
561 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
562 ret = -ENOENT;
563 goto error_context;
564 }
565 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
566 vsi = i40e_find_vsi_from_id(pf, vsi_id);
567 if (!vsi) {
568 ret = -ENOENT;
569 goto error_context;
570 }
571
572 /* clear the context structure first */
573 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
574
575 /* only set the required fields */
576 tx_ctx.base = info->dma_ring_addr / 128;
577 tx_ctx.qlen = info->ring_len;
578 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
579 tx_ctx.rdylist_act = 0;
580 tx_ctx.head_wb_ena = info->headwb_enabled;
581 tx_ctx.head_wb_addr = info->dma_headwb_addr;
582
583 /* clear the context in the HMC */
584 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
585 if (ret) {
586 dev_err(&pf->pdev->dev,
587 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
588 pf_queue_id, ret);
589 ret = -ENOENT;
590 goto error_context;
591 }
592
593 /* set the context in the HMC */
594 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
595 if (ret) {
596 dev_err(&pf->pdev->dev,
597 "Failed to set VF LAN Tx queue context %d error: %d\n",
598 pf_queue_id, ret);
599 ret = -ENOENT;
600 goto error_context;
601 }
602
603 /* associate this queue with the PCI VF function */
604 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
605 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
606 & I40E_QTX_CTL_PF_INDX_MASK);
607 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
608 << I40E_QTX_CTL_VFVM_INDX_SHIFT)
609 & I40E_QTX_CTL_VFVM_INDX_MASK);
610 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
611 i40e_flush(hw);
612
613 error_context:
614 return ret;
615 }
616
617 /**
618 * i40e_config_vsi_rx_queue
619 * @vf: pointer to the VF info
620 * @vsi_id: id of VSI as provided by the FW
621 * @vsi_queue_id: vsi relative queue index
622 * @info: config. info
623 *
624 * configure rx queue
625 **/
i40e_config_vsi_rx_queue(struct i40e_vf * vf,u16 vsi_id,u16 vsi_queue_id,struct virtchnl_rxq_info * info)626 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
627 u16 vsi_queue_id,
628 struct virtchnl_rxq_info *info)
629 {
630 u16 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
631 struct i40e_pf *pf = vf->pf;
632 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
633 struct i40e_hw *hw = &pf->hw;
634 struct i40e_hmc_obj_rxq rx_ctx;
635 int ret = 0;
636
637 /* clear the context structure first */
638 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
639
640 /* only set the required fields */
641 rx_ctx.base = info->dma_ring_addr / 128;
642 rx_ctx.qlen = info->ring_len;
643
644 if (info->splithdr_enabled) {
645 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
646 I40E_RX_SPLIT_IP |
647 I40E_RX_SPLIT_TCP_UDP |
648 I40E_RX_SPLIT_SCTP;
649 /* header length validation */
650 if (info->hdr_size > ((2 * 1024) - 64)) {
651 ret = -EINVAL;
652 goto error_param;
653 }
654 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
655
656 /* set split mode 10b */
657 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
658 }
659
660 /* databuffer length validation */
661 if (info->databuffer_size > ((16 * 1024) - 128)) {
662 ret = -EINVAL;
663 goto error_param;
664 }
665 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
666
667 /* max pkt. length validation */
668 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
669 ret = -EINVAL;
670 goto error_param;
671 }
672 rx_ctx.rxmax = info->max_pkt_size;
673
674 /* if port VLAN is configured increase the max packet size */
675 if (vsi->info.pvid)
676 rx_ctx.rxmax += VLAN_HLEN;
677
678 /* enable 32bytes desc always */
679 rx_ctx.dsize = 1;
680
681 /* default values */
682 rx_ctx.lrxqthresh = 1;
683 rx_ctx.crcstrip = 1;
684 rx_ctx.prefena = 1;
685 rx_ctx.l2tsel = 1;
686
687 /* clear the context in the HMC */
688 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
689 if (ret) {
690 dev_err(&pf->pdev->dev,
691 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
692 pf_queue_id, ret);
693 ret = -ENOENT;
694 goto error_param;
695 }
696
697 /* set the context in the HMC */
698 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
699 if (ret) {
700 dev_err(&pf->pdev->dev,
701 "Failed to set VF LAN Rx queue context %d error: %d\n",
702 pf_queue_id, ret);
703 ret = -ENOENT;
704 goto error_param;
705 }
706
707 error_param:
708 return ret;
709 }
710
711 /**
712 * i40e_alloc_vsi_res
713 * @vf: pointer to the VF info
714 * @idx: VSI index, applies only for ADq mode, zero otherwise
715 *
716 * alloc VF vsi context & resources
717 **/
i40e_alloc_vsi_res(struct i40e_vf * vf,u8 idx)718 static int i40e_alloc_vsi_res(struct i40e_vf *vf, u8 idx)
719 {
720 struct i40e_mac_filter *f = NULL;
721 struct i40e_pf *pf = vf->pf;
722 struct i40e_vsi *vsi;
723 u64 max_tx_rate = 0;
724 int ret = 0;
725
726 vsi = i40e_vsi_setup(pf, I40E_VSI_SRIOV, pf->vsi[pf->lan_vsi]->seid,
727 vf->vf_id);
728
729 if (!vsi) {
730 dev_err(&pf->pdev->dev,
731 "add vsi failed for VF %d, aq_err %d\n",
732 vf->vf_id, pf->hw.aq.asq_last_status);
733 ret = -ENOENT;
734 goto error_alloc_vsi_res;
735 }
736
737 if (!idx) {
738 u64 hena = i40e_pf_get_default_rss_hena(pf);
739 u8 broadcast[ETH_ALEN];
740
741 vf->lan_vsi_idx = vsi->idx;
742 vf->lan_vsi_id = vsi->id;
743 /* If the port VLAN has been configured and then the
744 * VF driver was removed then the VSI port VLAN
745 * configuration was destroyed. Check if there is
746 * a port VLAN and restore the VSI configuration if
747 * needed.
748 */
749 if (vf->port_vlan_id)
750 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
751
752 spin_lock_bh(&vsi->mac_filter_hash_lock);
753 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
754 f = i40e_add_mac_filter(vsi,
755 vf->default_lan_addr.addr);
756 if (!f)
757 dev_info(&pf->pdev->dev,
758 "Could not add MAC filter %pM for VF %d\n",
759 vf->default_lan_addr.addr, vf->vf_id);
760 }
761 eth_broadcast_addr(broadcast);
762 f = i40e_add_mac_filter(vsi, broadcast);
763 if (!f)
764 dev_info(&pf->pdev->dev,
765 "Could not allocate VF broadcast filter\n");
766 spin_unlock_bh(&vsi->mac_filter_hash_lock);
767 wr32(&pf->hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)hena);
768 wr32(&pf->hw, I40E_VFQF_HENA1(1, vf->vf_id), (u32)(hena >> 32));
769 /* program mac filter only for VF VSI */
770 ret = i40e_sync_vsi_filters(vsi);
771 if (ret)
772 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
773 }
774
775 /* storing VSI index and id for ADq and don't apply the mac filter */
776 if (vf->adq_enabled) {
777 vf->ch[idx].vsi_idx = vsi->idx;
778 vf->ch[idx].vsi_id = vsi->id;
779 }
780
781 /* Set VF bandwidth if specified */
782 if (vf->tx_rate) {
783 max_tx_rate = vf->tx_rate;
784 } else if (vf->ch[idx].max_tx_rate) {
785 max_tx_rate = vf->ch[idx].max_tx_rate;
786 }
787
788 if (max_tx_rate) {
789 max_tx_rate = div_u64(max_tx_rate, I40E_BW_CREDIT_DIVISOR);
790 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
791 max_tx_rate, 0, NULL);
792 if (ret)
793 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
794 vf->vf_id, ret);
795 }
796
797 error_alloc_vsi_res:
798 return ret;
799 }
800
801 /**
802 * i40e_map_pf_queues_to_vsi
803 * @vf: pointer to the VF info
804 *
805 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
806 * function takes care of first part VSILAN_QTABLE, mapping pf queues to VSI.
807 **/
i40e_map_pf_queues_to_vsi(struct i40e_vf * vf)808 static void i40e_map_pf_queues_to_vsi(struct i40e_vf *vf)
809 {
810 struct i40e_pf *pf = vf->pf;
811 struct i40e_hw *hw = &pf->hw;
812 u32 reg, num_tc = 1; /* VF has at least one traffic class */
813 u16 vsi_id, qps;
814 int i, j;
815
816 if (vf->adq_enabled)
817 num_tc = vf->num_tc;
818
819 for (i = 0; i < num_tc; i++) {
820 if (vf->adq_enabled) {
821 qps = vf->ch[i].num_qps;
822 vsi_id = vf->ch[i].vsi_id;
823 } else {
824 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
825 vsi_id = vf->lan_vsi_id;
826 }
827
828 for (j = 0; j < 7; j++) {
829 if (j * 2 >= qps) {
830 /* end of list */
831 reg = 0x07FF07FF;
832 } else {
833 u16 qid = i40e_vc_get_pf_queue_id(vf,
834 vsi_id,
835 j * 2);
836 reg = qid;
837 qid = i40e_vc_get_pf_queue_id(vf, vsi_id,
838 (j * 2) + 1);
839 reg |= qid << 16;
840 }
841 i40e_write_rx_ctl(hw,
842 I40E_VSILAN_QTABLE(j, vsi_id),
843 reg);
844 }
845 }
846 }
847
848 /**
849 * i40e_map_pf_to_vf_queues
850 * @vf: pointer to the VF info
851 *
852 * PF maps LQPs to a VF by programming VSILAN_QTABLE & VPLAN_QTABLE. This
853 * function takes care of the second part VPLAN_QTABLE & completes VF mappings.
854 **/
i40e_map_pf_to_vf_queues(struct i40e_vf * vf)855 static void i40e_map_pf_to_vf_queues(struct i40e_vf *vf)
856 {
857 struct i40e_pf *pf = vf->pf;
858 struct i40e_hw *hw = &pf->hw;
859 u32 reg, total_qps = 0;
860 u32 qps, num_tc = 1; /* VF has at least one traffic class */
861 u16 vsi_id, qid;
862 int i, j;
863
864 if (vf->adq_enabled)
865 num_tc = vf->num_tc;
866
867 for (i = 0; i < num_tc; i++) {
868 if (vf->adq_enabled) {
869 qps = vf->ch[i].num_qps;
870 vsi_id = vf->ch[i].vsi_id;
871 } else {
872 qps = pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
873 vsi_id = vf->lan_vsi_id;
874 }
875
876 for (j = 0; j < qps; j++) {
877 qid = i40e_vc_get_pf_queue_id(vf, vsi_id, j);
878
879 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
880 wr32(hw, I40E_VPLAN_QTABLE(total_qps, vf->vf_id),
881 reg);
882 total_qps++;
883 }
884 }
885 }
886
887 /**
888 * i40e_enable_vf_mappings
889 * @vf: pointer to the VF info
890 *
891 * enable VF mappings
892 **/
i40e_enable_vf_mappings(struct i40e_vf * vf)893 static void i40e_enable_vf_mappings(struct i40e_vf *vf)
894 {
895 struct i40e_pf *pf = vf->pf;
896 struct i40e_hw *hw = &pf->hw;
897 u32 reg;
898
899 /* Tell the hardware we're using noncontiguous mapping. HW requires
900 * that VF queues be mapped using this method, even when they are
901 * contiguous in real life
902 */
903 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
904 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
905
906 /* enable VF vplan_qtable mappings */
907 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
908 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
909
910 i40e_map_pf_to_vf_queues(vf);
911 i40e_map_pf_queues_to_vsi(vf);
912
913 i40e_flush(hw);
914 }
915
916 /**
917 * i40e_disable_vf_mappings
918 * @vf: pointer to the VF info
919 *
920 * disable VF mappings
921 **/
i40e_disable_vf_mappings(struct i40e_vf * vf)922 static void i40e_disable_vf_mappings(struct i40e_vf *vf)
923 {
924 struct i40e_pf *pf = vf->pf;
925 struct i40e_hw *hw = &pf->hw;
926 int i;
927
928 /* disable qp mappings */
929 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
930 for (i = 0; i < I40E_MAX_VSI_QP; i++)
931 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
932 I40E_QUEUE_END_OF_LIST);
933 i40e_flush(hw);
934 }
935
936 /**
937 * i40e_free_vf_res
938 * @vf: pointer to the VF info
939 *
940 * free VF resources
941 **/
i40e_free_vf_res(struct i40e_vf * vf)942 static void i40e_free_vf_res(struct i40e_vf *vf)
943 {
944 struct i40e_pf *pf = vf->pf;
945 struct i40e_hw *hw = &pf->hw;
946 u32 reg_idx, reg;
947 int i, j, msix_vf;
948
949 /* Start by disabling VF's configuration API to prevent the OS from
950 * accessing the VF's VSI after it's freed / invalidated.
951 */
952 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
953
954 /* It's possible the VF had requeuested more queues than the default so
955 * do the accounting here when we're about to free them.
956 */
957 if (vf->num_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF) {
958 pf->queues_left += vf->num_queue_pairs -
959 I40E_DEFAULT_QUEUES_PER_VF;
960 }
961
962 /* free vsi & disconnect it from the parent uplink */
963 if (vf->lan_vsi_idx) {
964 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
965 vf->lan_vsi_idx = 0;
966 vf->lan_vsi_id = 0;
967 }
968
969 /* do the accounting and remove additional ADq VSI's */
970 if (vf->adq_enabled && vf->ch[0].vsi_idx) {
971 for (j = 0; j < vf->num_tc; j++) {
972 /* At this point VSI0 is already released so don't
973 * release it again and only clear their values in
974 * structure variables
975 */
976 if (j)
977 i40e_vsi_release(pf->vsi[vf->ch[j].vsi_idx]);
978 vf->ch[j].vsi_idx = 0;
979 vf->ch[j].vsi_id = 0;
980 }
981 }
982 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
983
984 /* disable interrupts so the VF starts in a known state */
985 for (i = 0; i < msix_vf; i++) {
986 /* format is same for both registers */
987 if (0 == i)
988 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
989 else
990 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
991 (vf->vf_id))
992 + (i - 1));
993 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
994 i40e_flush(hw);
995 }
996
997 /* clear the irq settings */
998 for (i = 0; i < msix_vf; i++) {
999 /* format is same for both registers */
1000 if (0 == i)
1001 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
1002 else
1003 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
1004 (vf->vf_id))
1005 + (i - 1));
1006 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
1007 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
1008 wr32(hw, reg_idx, reg);
1009 i40e_flush(hw);
1010 }
1011 /* reset some of the state variables keeping track of the resources */
1012 vf->num_queue_pairs = 0;
1013 clear_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states);
1014 clear_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states);
1015 }
1016
1017 /**
1018 * i40e_alloc_vf_res
1019 * @vf: pointer to the VF info
1020 *
1021 * allocate VF resources
1022 **/
i40e_alloc_vf_res(struct i40e_vf * vf)1023 static int i40e_alloc_vf_res(struct i40e_vf *vf)
1024 {
1025 struct i40e_pf *pf = vf->pf;
1026 int total_queue_pairs = 0;
1027 int ret, idx;
1028
1029 if (vf->num_req_queues &&
1030 vf->num_req_queues <= pf->queues_left + I40E_DEFAULT_QUEUES_PER_VF)
1031 pf->num_vf_qps = vf->num_req_queues;
1032 else
1033 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
1034
1035 /* allocate hw vsi context & associated resources */
1036 ret = i40e_alloc_vsi_res(vf, 0);
1037 if (ret)
1038 goto error_alloc;
1039 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
1040
1041 /* allocate additional VSIs based on tc information for ADq */
1042 if (vf->adq_enabled) {
1043 if (pf->queues_left >=
1044 (I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF)) {
1045 /* TC 0 always belongs to VF VSI */
1046 for (idx = 1; idx < vf->num_tc; idx++) {
1047 ret = i40e_alloc_vsi_res(vf, idx);
1048 if (ret)
1049 goto error_alloc;
1050 }
1051 /* send correct number of queues */
1052 total_queue_pairs = I40E_MAX_VF_QUEUES;
1053 } else {
1054 dev_info(&pf->pdev->dev, "VF %d: Not enough queues to allocate, disabling ADq\n",
1055 vf->vf_id);
1056 vf->adq_enabled = false;
1057 }
1058 }
1059
1060 /* We account for each VF to get a default number of queue pairs. If
1061 * the VF has now requested more, we need to account for that to make
1062 * certain we never request more queues than we actually have left in
1063 * HW.
1064 */
1065 if (total_queue_pairs > I40E_DEFAULT_QUEUES_PER_VF)
1066 pf->queues_left -=
1067 total_queue_pairs - I40E_DEFAULT_QUEUES_PER_VF;
1068
1069 if (vf->trusted)
1070 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1071 else
1072 clear_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
1073
1074 /* store the total qps number for the runtime
1075 * VF req validation
1076 */
1077 vf->num_queue_pairs = total_queue_pairs;
1078
1079 /* VF is now completely initialized */
1080 set_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1081
1082 error_alloc:
1083 if (ret)
1084 i40e_free_vf_res(vf);
1085
1086 return ret;
1087 }
1088
1089 #define VF_DEVICE_STATUS 0xAA
1090 #define VF_TRANS_PENDING_MASK 0x20
1091 /**
1092 * i40e_quiesce_vf_pci
1093 * @vf: pointer to the VF structure
1094 *
1095 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
1096 * if the transactions never clear.
1097 **/
i40e_quiesce_vf_pci(struct i40e_vf * vf)1098 static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
1099 {
1100 struct i40e_pf *pf = vf->pf;
1101 struct i40e_hw *hw = &pf->hw;
1102 int vf_abs_id, i;
1103 u32 reg;
1104
1105 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
1106
1107 wr32(hw, I40E_PF_PCI_CIAA,
1108 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
1109 for (i = 0; i < 100; i++) {
1110 reg = rd32(hw, I40E_PF_PCI_CIAD);
1111 if ((reg & VF_TRANS_PENDING_MASK) == 0)
1112 return 0;
1113 udelay(1);
1114 }
1115 return -EIO;
1116 }
1117
1118 /**
1119 * __i40e_getnum_vf_vsi_vlan_filters
1120 * @vsi: pointer to the vsi
1121 *
1122 * called to get the number of VLANs offloaded on this VF
1123 **/
__i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1124 static int __i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1125 {
1126 struct i40e_mac_filter *f;
1127 u16 num_vlans = 0, bkt;
1128
1129 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1130 if (f->vlan >= 0 && f->vlan <= I40E_MAX_VLANID)
1131 num_vlans++;
1132 }
1133
1134 return num_vlans;
1135 }
1136
1137 /**
1138 * i40e_getnum_vf_vsi_vlan_filters
1139 * @vsi: pointer to the vsi
1140 *
1141 * wrapper for __i40e_getnum_vf_vsi_vlan_filters() with spinlock held
1142 **/
i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi * vsi)1143 static int i40e_getnum_vf_vsi_vlan_filters(struct i40e_vsi *vsi)
1144 {
1145 int num_vlans;
1146
1147 spin_lock_bh(&vsi->mac_filter_hash_lock);
1148 num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1149 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1150
1151 return num_vlans;
1152 }
1153
1154 /**
1155 * i40e_get_vlan_list_sync
1156 * @vsi: pointer to the VSI
1157 * @num_vlans: number of VLANs in mac_filter_hash, returned to caller
1158 * @vlan_list: list of VLANs present in mac_filter_hash, returned to caller.
1159 * This array is allocated here, but has to be freed in caller.
1160 *
1161 * Called to get number of VLANs and VLAN list present in mac_filter_hash.
1162 **/
i40e_get_vlan_list_sync(struct i40e_vsi * vsi,u16 * num_vlans,s16 ** vlan_list)1163 static void i40e_get_vlan_list_sync(struct i40e_vsi *vsi, u16 *num_vlans,
1164 s16 **vlan_list)
1165 {
1166 struct i40e_mac_filter *f;
1167 int i = 0;
1168 int bkt;
1169
1170 spin_lock_bh(&vsi->mac_filter_hash_lock);
1171 *num_vlans = __i40e_getnum_vf_vsi_vlan_filters(vsi);
1172 *vlan_list = kcalloc(*num_vlans, sizeof(**vlan_list), GFP_ATOMIC);
1173 if (!(*vlan_list))
1174 goto err;
1175
1176 hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
1177 if (f->vlan < 0 || f->vlan > I40E_MAX_VLANID)
1178 continue;
1179 (*vlan_list)[i++] = f->vlan;
1180 }
1181 err:
1182 spin_unlock_bh(&vsi->mac_filter_hash_lock);
1183 }
1184
1185 /**
1186 * i40e_set_vsi_promisc
1187 * @vf: pointer to the VF struct
1188 * @seid: VSI number
1189 * @multi_enable: set MAC L2 layer multicast promiscuous enable/disable
1190 * for a given VLAN
1191 * @unicast_enable: set MAC L2 layer unicast promiscuous enable/disable
1192 * for a given VLAN
1193 * @vl: List of VLANs - apply filter for given VLANs
1194 * @num_vlans: Number of elements in @vl
1195 **/
1196 static i40e_status
i40e_set_vsi_promisc(struct i40e_vf * vf,u16 seid,bool multi_enable,bool unicast_enable,s16 * vl,u16 num_vlans)1197 i40e_set_vsi_promisc(struct i40e_vf *vf, u16 seid, bool multi_enable,
1198 bool unicast_enable, s16 *vl, u16 num_vlans)
1199 {
1200 i40e_status aq_ret, aq_tmp = 0;
1201 struct i40e_pf *pf = vf->pf;
1202 struct i40e_hw *hw = &pf->hw;
1203 int i;
1204
1205 /* No VLAN to set promisc on, set on VSI */
1206 if (!num_vlans || !vl) {
1207 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, seid,
1208 multi_enable,
1209 NULL);
1210 if (aq_ret) {
1211 int aq_err = pf->hw.aq.asq_last_status;
1212
1213 dev_err(&pf->pdev->dev,
1214 "VF %d failed to set multicast promiscuous mode err %s aq_err %s\n",
1215 vf->vf_id,
1216 i40e_stat_str(&pf->hw, aq_ret),
1217 i40e_aq_str(&pf->hw, aq_err));
1218
1219 return aq_ret;
1220 }
1221
1222 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, seid,
1223 unicast_enable,
1224 NULL, true);
1225
1226 if (aq_ret) {
1227 int aq_err = pf->hw.aq.asq_last_status;
1228
1229 dev_err(&pf->pdev->dev,
1230 "VF %d failed to set unicast promiscuous mode err %s aq_err %s\n",
1231 vf->vf_id,
1232 i40e_stat_str(&pf->hw, aq_ret),
1233 i40e_aq_str(&pf->hw, aq_err));
1234 }
1235
1236 return aq_ret;
1237 }
1238
1239 for (i = 0; i < num_vlans; i++) {
1240 aq_ret = i40e_aq_set_vsi_mc_promisc_on_vlan(hw, seid,
1241 multi_enable,
1242 vl[i], NULL);
1243 if (aq_ret) {
1244 int aq_err = pf->hw.aq.asq_last_status;
1245
1246 dev_err(&pf->pdev->dev,
1247 "VF %d failed to set multicast promiscuous mode err %s aq_err %s\n",
1248 vf->vf_id,
1249 i40e_stat_str(&pf->hw, aq_ret),
1250 i40e_aq_str(&pf->hw, aq_err));
1251
1252 if (!aq_tmp)
1253 aq_tmp = aq_ret;
1254 }
1255
1256 aq_ret = i40e_aq_set_vsi_uc_promisc_on_vlan(hw, seid,
1257 unicast_enable,
1258 vl[i], NULL);
1259 if (aq_ret) {
1260 int aq_err = pf->hw.aq.asq_last_status;
1261
1262 dev_err(&pf->pdev->dev,
1263 "VF %d failed to set unicast promiscuous mode err %s aq_err %s\n",
1264 vf->vf_id,
1265 i40e_stat_str(&pf->hw, aq_ret),
1266 i40e_aq_str(&pf->hw, aq_err));
1267
1268 if (!aq_tmp)
1269 aq_tmp = aq_ret;
1270 }
1271 }
1272
1273 if (aq_tmp)
1274 aq_ret = aq_tmp;
1275
1276 return aq_ret;
1277 }
1278
1279 /**
1280 * i40e_config_vf_promiscuous_mode
1281 * @vf: pointer to the VF info
1282 * @vsi_id: VSI id
1283 * @allmulti: set MAC L2 layer multicast promiscuous enable/disable
1284 * @alluni: set MAC L2 layer unicast promiscuous enable/disable
1285 *
1286 * Called from the VF to configure the promiscuous mode of
1287 * VF vsis and from the VF reset path to reset promiscuous mode.
1288 **/
i40e_config_vf_promiscuous_mode(struct i40e_vf * vf,u16 vsi_id,bool allmulti,bool alluni)1289 static i40e_status i40e_config_vf_promiscuous_mode(struct i40e_vf *vf,
1290 u16 vsi_id,
1291 bool allmulti,
1292 bool alluni)
1293 {
1294 i40e_status aq_ret = I40E_SUCCESS;
1295 struct i40e_pf *pf = vf->pf;
1296 struct i40e_vsi *vsi;
1297 u16 num_vlans;
1298 s16 *vl;
1299
1300 vsi = i40e_find_vsi_from_id(pf, vsi_id);
1301 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id) || !vsi)
1302 return I40E_ERR_PARAM;
1303
1304 if (vf->port_vlan_id) {
1305 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti,
1306 alluni, &vf->port_vlan_id, 1);
1307 return aq_ret;
1308 } else if (i40e_getnum_vf_vsi_vlan_filters(vsi)) {
1309 i40e_get_vlan_list_sync(vsi, &num_vlans, &vl);
1310
1311 if (!vl)
1312 return I40E_ERR_NO_MEMORY;
1313
1314 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1315 vl, num_vlans);
1316 kfree(vl);
1317 return aq_ret;
1318 }
1319
1320 /* no VLANs to set on, set on VSI */
1321 aq_ret = i40e_set_vsi_promisc(vf, vsi->seid, allmulti, alluni,
1322 NULL, 0);
1323 return aq_ret;
1324 }
1325
1326 /**
1327 * i40e_sync_vfr_reset
1328 * @hw: pointer to hw struct
1329 * @vf_id: VF identifier
1330 *
1331 * Before trigger hardware reset, we need to know if no other process has
1332 * reserved the hardware for any reset operations. This check is done by
1333 * examining the status of the RSTAT1 register used to signal the reset.
1334 **/
i40e_sync_vfr_reset(struct i40e_hw * hw,int vf_id)1335 static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id)
1336 {
1337 u32 reg;
1338 int i;
1339
1340 for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) {
1341 reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) &
1342 I40E_VFINT_ICR0_ADMINQ_MASK;
1343 if (reg)
1344 return 0;
1345
1346 usleep_range(100, 200);
1347 }
1348
1349 return -EAGAIN;
1350 }
1351
1352 /**
1353 * i40e_trigger_vf_reset
1354 * @vf: pointer to the VF structure
1355 * @flr: VFLR was issued or not
1356 *
1357 * Trigger hardware to start a reset for a particular VF. Expects the caller
1358 * to wait the proper amount of time to allow hardware to reset the VF before
1359 * it cleans up and restores VF functionality.
1360 **/
i40e_trigger_vf_reset(struct i40e_vf * vf,bool flr)1361 static void i40e_trigger_vf_reset(struct i40e_vf *vf, bool flr)
1362 {
1363 struct i40e_pf *pf = vf->pf;
1364 struct i40e_hw *hw = &pf->hw;
1365 u32 reg, reg_idx, bit_idx;
1366 bool vf_active;
1367 u32 radq;
1368
1369 /* warn the VF */
1370 vf_active = test_and_clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1371
1372 /* Disable VF's configuration API during reset. The flag is re-enabled
1373 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
1374 * It's normally disabled in i40e_free_vf_res(), but it's safer
1375 * to do it earlier to give some time to finish to any VF config
1376 * functions that may still be running at this point.
1377 */
1378 clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
1379
1380 /* In the case of a VFLR, the HW has already reset the VF and we
1381 * just need to clean up, so don't hit the VFRTRIG register.
1382 */
1383 if (!flr) {
1384 /* Sync VFR reset before trigger next one */
1385 radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) &
1386 I40E_VFINT_ICR0_ADMINQ_MASK;
1387 if (vf_active && !radq)
1388 /* waiting for finish reset by virtual driver */
1389 if (i40e_sync_vfr_reset(hw, vf->vf_id))
1390 dev_info(&pf->pdev->dev,
1391 "Reset VF %d never finished\n",
1392 vf->vf_id);
1393
1394 /* Reset VF using VPGEN_VFRTRIG reg. It is also setting
1395 * in progress state in rstat1 register.
1396 */
1397 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1398 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1399 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1400 i40e_flush(hw);
1401 }
1402 /* clear the VFLR bit in GLGEN_VFLRSTAT */
1403 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
1404 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
1405 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1406 i40e_flush(hw);
1407
1408 if (i40e_quiesce_vf_pci(vf))
1409 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
1410 vf->vf_id);
1411 }
1412
1413 /**
1414 * i40e_cleanup_reset_vf
1415 * @vf: pointer to the VF structure
1416 *
1417 * Cleanup a VF after the hardware reset is finished. Expects the caller to
1418 * have verified whether the reset is finished properly, and ensure the
1419 * minimum amount of wait time has passed.
1420 **/
i40e_cleanup_reset_vf(struct i40e_vf * vf)1421 static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
1422 {
1423 struct i40e_pf *pf = vf->pf;
1424 struct i40e_hw *hw = &pf->hw;
1425 u32 reg;
1426
1427 /* disable promisc modes in case they were enabled */
1428 i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id, false, false);
1429
1430 /* free VF resources to begin resetting the VSI state */
1431 i40e_free_vf_res(vf);
1432
1433 /* Enable hardware by clearing the reset bit in the VPGEN_VFRTRIG reg.
1434 * By doing this we allow HW to access VF memory at any point. If we
1435 * did it any sooner, HW could access memory while it was being freed
1436 * in i40e_free_vf_res(), causing an IOMMU fault.
1437 *
1438 * On the other hand, this needs to be done ASAP, because the VF driver
1439 * is waiting for this to happen and may report a timeout. It's
1440 * harmless, but it gets logged into Guest OS kernel log, so best avoid
1441 * it.
1442 */
1443 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
1444 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
1445 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
1446
1447 /* reallocate VF resources to finish resetting the VSI state */
1448 if (!i40e_alloc_vf_res(vf)) {
1449 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1450 i40e_enable_vf_mappings(vf);
1451 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
1452 clear_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
1453 /* Do not notify the client during VF init */
1454 if (!test_and_clear_bit(I40E_VF_STATE_PRE_ENABLE,
1455 &vf->vf_states))
1456 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
1457 vf->num_vlan = 0;
1458 }
1459
1460 /* Tell the VF driver the reset is done. This needs to be done only
1461 * after VF has been fully initialized, because the VF driver may
1462 * request resources immediately after setting this flag.
1463 */
1464 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
1465 }
1466
1467 /**
1468 * i40e_reset_vf
1469 * @vf: pointer to the VF structure
1470 * @flr: VFLR was issued or not
1471 *
1472 * Returns true if the VF is in reset, resets successfully, or resets
1473 * are disabled and false otherwise.
1474 **/
i40e_reset_vf(struct i40e_vf * vf,bool flr)1475 bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
1476 {
1477 struct i40e_pf *pf = vf->pf;
1478 struct i40e_hw *hw = &pf->hw;
1479 bool rsd = false;
1480 u32 reg;
1481 int i;
1482
1483 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state))
1484 return true;
1485
1486 /* Bail out if VFs are disabled. */
1487 if (test_bit(__I40E_VF_DISABLE, pf->state))
1488 return true;
1489
1490 /* If VF is being reset already we don't need to continue. */
1491 if (test_and_set_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1492 return true;
1493
1494 i40e_trigger_vf_reset(vf, flr);
1495
1496 /* poll VPGEN_VFRSTAT reg to make sure
1497 * that reset is complete
1498 */
1499 for (i = 0; i < 10; i++) {
1500 /* VF reset requires driver to first reset the VF and then
1501 * poll the status register to make sure that the reset
1502 * completed successfully. Due to internal HW FIFO flushes,
1503 * we must wait 10ms before the register will be valid.
1504 */
1505 usleep_range(10000, 20000);
1506 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1507 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
1508 rsd = true;
1509 break;
1510 }
1511 }
1512
1513 if (flr)
1514 usleep_range(10000, 20000);
1515
1516 if (!rsd)
1517 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1518 vf->vf_id);
1519 usleep_range(10000, 20000);
1520
1521 /* On initial reset, we don't have any queues to disable */
1522 if (vf->lan_vsi_idx != 0)
1523 i40e_vsi_stop_rings(pf->vsi[vf->lan_vsi_idx]);
1524
1525 i40e_cleanup_reset_vf(vf);
1526
1527 i40e_flush(hw);
1528 usleep_range(20000, 40000);
1529 clear_bit(I40E_VF_STATE_RESETTING, &vf->vf_states);
1530
1531 return true;
1532 }
1533
1534 /**
1535 * i40e_reset_all_vfs
1536 * @pf: pointer to the PF structure
1537 * @flr: VFLR was issued or not
1538 *
1539 * Reset all allocated VFs in one go. First, tell the hardware to reset each
1540 * VF, then do all the waiting in one chunk, and finally finish restoring each
1541 * VF after the wait. This is useful during PF routines which need to reset
1542 * all VFs, as otherwise it must perform these resets in a serialized fashion.
1543 *
1544 * Returns true if any VFs were reset, and false otherwise.
1545 **/
i40e_reset_all_vfs(struct i40e_pf * pf,bool flr)1546 bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr)
1547 {
1548 struct i40e_hw *hw = &pf->hw;
1549 struct i40e_vf *vf;
1550 int i, v;
1551 u32 reg;
1552
1553 /* If we don't have any VFs, then there is nothing to reset */
1554 if (!pf->num_alloc_vfs)
1555 return false;
1556
1557 /* If VFs have been disabled, there is no need to reset */
1558 if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1559 return false;
1560
1561 /* Begin reset on all VFs at once */
1562 for (v = 0; v < pf->num_alloc_vfs; v++) {
1563 vf = &pf->vf[v];
1564 /* If VF is being reset no need to trigger reset again */
1565 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1566 i40e_trigger_vf_reset(&pf->vf[v], flr);
1567 }
1568
1569 /* HW requires some time to make sure it can flush the FIFO for a VF
1570 * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1571 * sequence to make sure that it has completed. We'll keep track of
1572 * the VFs using a simple iterator that increments once that VF has
1573 * finished resetting.
1574 */
1575 for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) {
1576 usleep_range(10000, 20000);
1577
1578 /* Check each VF in sequence, beginning with the VF to fail
1579 * the previous check.
1580 */
1581 while (v < pf->num_alloc_vfs) {
1582 vf = &pf->vf[v];
1583 if (!test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states)) {
1584 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
1585 if (!(reg & I40E_VPGEN_VFRSTAT_VFRD_MASK))
1586 break;
1587 }
1588
1589 /* If the current VF has finished resetting, move on
1590 * to the next VF in sequence.
1591 */
1592 v++;
1593 }
1594 }
1595
1596 if (flr)
1597 usleep_range(10000, 20000);
1598
1599 /* Display a warning if at least one VF didn't manage to reset in
1600 * time, but continue on with the operation.
1601 */
1602 if (v < pf->num_alloc_vfs)
1603 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1604 pf->vf[v].vf_id);
1605 usleep_range(10000, 20000);
1606
1607 /* Begin disabling all the rings associated with VFs, but do not wait
1608 * between each VF.
1609 */
1610 for (v = 0; v < pf->num_alloc_vfs; v++) {
1611 /* On initial reset, we don't have any queues to disable */
1612 if (pf->vf[v].lan_vsi_idx == 0)
1613 continue;
1614
1615 /* If VF is reset in another thread just continue */
1616 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1617 continue;
1618
1619 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[v].lan_vsi_idx]);
1620 }
1621
1622 /* Now that we've notified HW to disable all of the VF rings, wait
1623 * until they finish.
1624 */
1625 for (v = 0; v < pf->num_alloc_vfs; v++) {
1626 /* On initial reset, we don't have any queues to disable */
1627 if (pf->vf[v].lan_vsi_idx == 0)
1628 continue;
1629
1630 /* If VF is reset in another thread just continue */
1631 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1632 continue;
1633
1634 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[v].lan_vsi_idx]);
1635 }
1636
1637 /* Hw may need up to 50ms to finish disabling the RX queues. We
1638 * minimize the wait by delaying only once for all VFs.
1639 */
1640 mdelay(50);
1641
1642 /* Finish the reset on each VF */
1643 for (v = 0; v < pf->num_alloc_vfs; v++) {
1644 /* If VF is reset in another thread just continue */
1645 if (test_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
1646 continue;
1647
1648 i40e_cleanup_reset_vf(&pf->vf[v]);
1649 }
1650
1651 i40e_flush(hw);
1652 usleep_range(20000, 40000);
1653 clear_bit(__I40E_VF_DISABLE, pf->state);
1654
1655 return true;
1656 }
1657
1658 /**
1659 * i40e_free_vfs
1660 * @pf: pointer to the PF structure
1661 *
1662 * free VF resources
1663 **/
i40e_free_vfs(struct i40e_pf * pf)1664 void i40e_free_vfs(struct i40e_pf *pf)
1665 {
1666 struct i40e_hw *hw = &pf->hw;
1667 u32 reg_idx, bit_idx;
1668 int i, tmp, vf_id;
1669
1670 if (!pf->vf)
1671 return;
1672
1673 set_bit(__I40E_VFS_RELEASING, pf->state);
1674 while (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
1675 usleep_range(1000, 2000);
1676
1677 i40e_notify_client_of_vf_enable(pf, 0);
1678
1679 /* Disable IOV before freeing resources. This lets any VF drivers
1680 * running in the host get themselves cleaned up before we yank
1681 * the carpet out from underneath their feet.
1682 */
1683 if (!pci_vfs_assigned(pf->pdev))
1684 pci_disable_sriov(pf->pdev);
1685 else
1686 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1687
1688 /* Amortize wait time by stopping all VFs at the same time */
1689 for (i = 0; i < pf->num_alloc_vfs; i++) {
1690 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1691 continue;
1692
1693 i40e_vsi_stop_rings_no_wait(pf->vsi[pf->vf[i].lan_vsi_idx]);
1694 }
1695
1696 for (i = 0; i < pf->num_alloc_vfs; i++) {
1697 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1698 continue;
1699
1700 i40e_vsi_wait_queues_disabled(pf->vsi[pf->vf[i].lan_vsi_idx]);
1701 }
1702
1703 /* free up VF resources */
1704 tmp = pf->num_alloc_vfs;
1705 pf->num_alloc_vfs = 0;
1706 for (i = 0; i < tmp; i++) {
1707 if (test_bit(I40E_VF_STATE_INIT, &pf->vf[i].vf_states))
1708 i40e_free_vf_res(&pf->vf[i]);
1709 /* disable qp mappings */
1710 i40e_disable_vf_mappings(&pf->vf[i]);
1711 }
1712
1713 kfree(pf->vf);
1714 pf->vf = NULL;
1715
1716 /* This check is for when the driver is unloaded while VFs are
1717 * assigned. Setting the number of VFs to 0 through sysfs is caught
1718 * before this function ever gets called.
1719 */
1720 if (!pci_vfs_assigned(pf->pdev)) {
1721 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1722 * work correctly when SR-IOV gets re-enabled.
1723 */
1724 for (vf_id = 0; vf_id < tmp; vf_id++) {
1725 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1726 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1727 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1728 }
1729 }
1730 clear_bit(__I40E_VF_DISABLE, pf->state);
1731 clear_bit(__I40E_VFS_RELEASING, pf->state);
1732 }
1733
1734 #ifdef CONFIG_PCI_IOV
1735 /**
1736 * i40e_alloc_vfs
1737 * @pf: pointer to the PF structure
1738 * @num_alloc_vfs: number of VFs to allocate
1739 *
1740 * allocate VF resources
1741 **/
i40e_alloc_vfs(struct i40e_pf * pf,u16 num_alloc_vfs)1742 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1743 {
1744 struct i40e_vf *vfs;
1745 int i, ret = 0;
1746
1747 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1748 i40e_irq_dynamic_disable_icr0(pf);
1749
1750 /* Check to see if we're just allocating resources for extant VFs */
1751 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1752 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1753 if (ret) {
1754 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1755 pf->num_alloc_vfs = 0;
1756 goto err_iov;
1757 }
1758 }
1759 /* allocate memory */
1760 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1761 if (!vfs) {
1762 ret = -ENOMEM;
1763 goto err_alloc;
1764 }
1765 pf->vf = vfs;
1766
1767 /* apply default profile */
1768 for (i = 0; i < num_alloc_vfs; i++) {
1769 vfs[i].pf = pf;
1770 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1771 vfs[i].vf_id = i;
1772
1773 /* assign default capabilities */
1774 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1775 vfs[i].spoofchk = true;
1776
1777 set_bit(I40E_VF_STATE_PRE_ENABLE, &vfs[i].vf_states);
1778
1779 }
1780 pf->num_alloc_vfs = num_alloc_vfs;
1781
1782 /* VF resources get allocated during reset */
1783 i40e_reset_all_vfs(pf, false);
1784
1785 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1786
1787 err_alloc:
1788 if (ret)
1789 i40e_free_vfs(pf);
1790 err_iov:
1791 /* Re-enable interrupt 0. */
1792 i40e_irq_dynamic_enable_icr0(pf);
1793 return ret;
1794 }
1795
1796 #endif
1797 /**
1798 * i40e_pci_sriov_enable
1799 * @pdev: pointer to a pci_dev structure
1800 * @num_vfs: number of VFs to allocate
1801 *
1802 * Enable or change the number of VFs
1803 **/
i40e_pci_sriov_enable(struct pci_dev * pdev,int num_vfs)1804 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1805 {
1806 #ifdef CONFIG_PCI_IOV
1807 struct i40e_pf *pf = pci_get_drvdata(pdev);
1808 int pre_existing_vfs = pci_num_vf(pdev);
1809 int err = 0;
1810
1811 if (test_bit(__I40E_TESTING, pf->state)) {
1812 dev_warn(&pdev->dev,
1813 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1814 err = -EPERM;
1815 goto err_out;
1816 }
1817
1818 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1819 i40e_free_vfs(pf);
1820 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1821 goto out;
1822
1823 if (num_vfs > pf->num_req_vfs) {
1824 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1825 num_vfs, pf->num_req_vfs);
1826 err = -EPERM;
1827 goto err_out;
1828 }
1829
1830 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1831 err = i40e_alloc_vfs(pf, num_vfs);
1832 if (err) {
1833 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1834 goto err_out;
1835 }
1836
1837 out:
1838 return num_vfs;
1839
1840 err_out:
1841 return err;
1842 #endif
1843 return 0;
1844 }
1845
1846 /**
1847 * i40e_pci_sriov_configure
1848 * @pdev: pointer to a pci_dev structure
1849 * @num_vfs: number of VFs to allocate
1850 *
1851 * Enable or change the number of VFs. Called when the user updates the number
1852 * of VFs in sysfs.
1853 **/
i40e_pci_sriov_configure(struct pci_dev * pdev,int num_vfs)1854 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1855 {
1856 struct i40e_pf *pf = pci_get_drvdata(pdev);
1857 int ret = 0;
1858
1859 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
1860 dev_warn(&pdev->dev, "Unable to configure VFs, other operation is pending.\n");
1861 return -EAGAIN;
1862 }
1863
1864 if (num_vfs) {
1865 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
1866 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
1867 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1868 }
1869 ret = i40e_pci_sriov_enable(pdev, num_vfs);
1870 goto sriov_configure_out;
1871 }
1872
1873 if (!pci_vfs_assigned(pf->pdev)) {
1874 i40e_free_vfs(pf);
1875 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1876 i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG);
1877 } else {
1878 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1879 ret = -EINVAL;
1880 goto sriov_configure_out;
1881 }
1882 sriov_configure_out:
1883 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
1884 return ret;
1885 }
1886
1887 /***********************virtual channel routines******************/
1888
1889 /**
1890 * i40e_vc_send_msg_to_vf
1891 * @vf: pointer to the VF info
1892 * @v_opcode: virtual channel opcode
1893 * @v_retval: virtual channel return value
1894 * @msg: pointer to the msg buffer
1895 * @msglen: msg length
1896 *
1897 * send msg to VF
1898 **/
i40e_vc_send_msg_to_vf(struct i40e_vf * vf,u32 v_opcode,u32 v_retval,u8 * msg,u16 msglen)1899 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1900 u32 v_retval, u8 *msg, u16 msglen)
1901 {
1902 struct i40e_pf *pf;
1903 struct i40e_hw *hw;
1904 int abs_vf_id;
1905 i40e_status aq_ret;
1906
1907 /* validate the request */
1908 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1909 return -EINVAL;
1910
1911 pf = vf->pf;
1912 hw = &pf->hw;
1913 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1914
1915 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1916 msg, msglen, NULL);
1917 if (aq_ret) {
1918 dev_info(&pf->pdev->dev,
1919 "Unable to send the message to VF %d aq_err %d\n",
1920 vf->vf_id, pf->hw.aq.asq_last_status);
1921 return -EIO;
1922 }
1923
1924 return 0;
1925 }
1926
1927 /**
1928 * i40e_vc_send_resp_to_vf
1929 * @vf: pointer to the VF info
1930 * @opcode: operation code
1931 * @retval: return value
1932 *
1933 * send resp msg to VF
1934 **/
i40e_vc_send_resp_to_vf(struct i40e_vf * vf,enum virtchnl_ops opcode,i40e_status retval)1935 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
1936 enum virtchnl_ops opcode,
1937 i40e_status retval)
1938 {
1939 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
1940 }
1941
1942 /**
1943 * i40e_sync_vf_state
1944 * @vf: pointer to the VF info
1945 * @state: VF state
1946 *
1947 * Called from a VF message to synchronize the service with a potential
1948 * VF reset state
1949 **/
i40e_sync_vf_state(struct i40e_vf * vf,enum i40e_vf_states state)1950 static bool i40e_sync_vf_state(struct i40e_vf *vf, enum i40e_vf_states state)
1951 {
1952 int i;
1953
1954 /* When handling some messages, it needs VF state to be set.
1955 * It is possible that this flag is cleared during VF reset,
1956 * so there is a need to wait until the end of the reset to
1957 * handle the request message correctly.
1958 */
1959 for (i = 0; i < I40E_VF_STATE_WAIT_COUNT; i++) {
1960 if (test_bit(state, &vf->vf_states))
1961 return true;
1962 usleep_range(10000, 20000);
1963 }
1964
1965 return test_bit(state, &vf->vf_states);
1966 }
1967
1968 /**
1969 * i40e_vc_get_version_msg
1970 * @vf: pointer to the VF info
1971 * @msg: pointer to the msg buffer
1972 *
1973 * called from the VF to request the API version used by the PF
1974 **/
i40e_vc_get_version_msg(struct i40e_vf * vf,u8 * msg)1975 static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
1976 {
1977 struct virtchnl_version_info info = {
1978 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
1979 };
1980
1981 vf->vf_ver = *(struct virtchnl_version_info *)msg;
1982 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
1983 if (VF_IS_V10(&vf->vf_ver))
1984 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
1985 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
1986 I40E_SUCCESS, (u8 *)&info,
1987 sizeof(struct virtchnl_version_info));
1988 }
1989
1990 /**
1991 * i40e_del_qch - delete all the additional VSIs created as a part of ADq
1992 * @vf: pointer to VF structure
1993 **/
i40e_del_qch(struct i40e_vf * vf)1994 static void i40e_del_qch(struct i40e_vf *vf)
1995 {
1996 struct i40e_pf *pf = vf->pf;
1997 int i;
1998
1999 /* first element in the array belongs to primary VF VSI and we shouldn't
2000 * delete it. We should however delete the rest of the VSIs created
2001 */
2002 for (i = 1; i < vf->num_tc; i++) {
2003 if (vf->ch[i].vsi_idx) {
2004 i40e_vsi_release(pf->vsi[vf->ch[i].vsi_idx]);
2005 vf->ch[i].vsi_idx = 0;
2006 vf->ch[i].vsi_id = 0;
2007 }
2008 }
2009 }
2010
2011 /**
2012 * i40e_vc_get_max_frame_size
2013 * @vf: pointer to the VF
2014 *
2015 * Max frame size is determined based on the current port's max frame size and
2016 * whether a port VLAN is configured on this VF. The VF is not aware whether
2017 * it's in a port VLAN so the PF needs to account for this in max frame size
2018 * checks and sending the max frame size to the VF.
2019 **/
i40e_vc_get_max_frame_size(struct i40e_vf * vf)2020 static u16 i40e_vc_get_max_frame_size(struct i40e_vf *vf)
2021 {
2022 u16 max_frame_size = vf->pf->hw.phy.link_info.max_frame_size;
2023
2024 if (vf->port_vlan_id)
2025 max_frame_size -= VLAN_HLEN;
2026
2027 return max_frame_size;
2028 }
2029
2030 /**
2031 * i40e_vc_get_vf_resources_msg
2032 * @vf: pointer to the VF info
2033 * @msg: pointer to the msg buffer
2034 *
2035 * called from the VF to request its resources
2036 **/
i40e_vc_get_vf_resources_msg(struct i40e_vf * vf,u8 * msg)2037 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
2038 {
2039 struct virtchnl_vf_resource *vfres = NULL;
2040 struct i40e_pf *pf = vf->pf;
2041 i40e_status aq_ret = 0;
2042 struct i40e_vsi *vsi;
2043 int num_vsis = 1;
2044 size_t len = 0;
2045 int ret;
2046
2047 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_INIT)) {
2048 aq_ret = I40E_ERR_PARAM;
2049 goto err;
2050 }
2051
2052 len = struct_size(vfres, vsi_res, num_vsis);
2053 vfres = kzalloc(len, GFP_KERNEL);
2054 if (!vfres) {
2055 aq_ret = I40E_ERR_NO_MEMORY;
2056 len = 0;
2057 goto err;
2058 }
2059 if (VF_IS_V11(&vf->vf_ver))
2060 vf->driver_caps = *(u32 *)msg;
2061 else
2062 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
2063 VIRTCHNL_VF_OFFLOAD_RSS_REG |
2064 VIRTCHNL_VF_OFFLOAD_VLAN;
2065
2066 vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
2067 vsi = pf->vsi[vf->lan_vsi_idx];
2068 if (!vsi->info.pvid)
2069 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
2070
2071 if (i40e_vf_client_capable(pf, vf->vf_id) &&
2072 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_IWARP)) {
2073 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_IWARP;
2074 set_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
2075 } else {
2076 clear_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states);
2077 }
2078
2079 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
2080 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
2081 } else {
2082 if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
2083 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ))
2084 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
2085 else
2086 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
2087 }
2088
2089 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
2090 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
2091 vfres->vf_cap_flags |=
2092 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
2093 }
2094
2095 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
2096 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
2097
2098 if ((pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE) &&
2099 (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
2100 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
2101
2102 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) {
2103 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
2104 dev_err(&pf->pdev->dev,
2105 "VF %d requested polling mode: this feature is supported only when the device is running in single function per port (SFP) mode\n",
2106 vf->vf_id);
2107 aq_ret = I40E_ERR_PARAM;
2108 goto err;
2109 }
2110 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
2111 }
2112
2113 if (pf->hw_features & I40E_HW_WB_ON_ITR_CAPABLE) {
2114 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2115 vfres->vf_cap_flags |=
2116 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
2117 }
2118
2119 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
2120 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
2121
2122 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)
2123 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ADQ;
2124
2125 vfres->num_vsis = num_vsis;
2126 vfres->num_queue_pairs = vf->num_queue_pairs;
2127 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
2128 vfres->rss_key_size = I40E_HKEY_ARRAY_SIZE;
2129 vfres->rss_lut_size = I40E_VF_HLUT_ARRAY_SIZE;
2130 vfres->max_mtu = i40e_vc_get_max_frame_size(vf);
2131
2132 if (vf->lan_vsi_idx) {
2133 vfres->vsi_res[0].vsi_id = vf->lan_vsi_id;
2134 vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
2135 vfres->vsi_res[0].num_queue_pairs = vsi->alloc_queue_pairs;
2136 /* VFs only use TC 0 */
2137 vfres->vsi_res[0].qset_handle
2138 = le16_to_cpu(vsi->info.qs_handle[0]);
2139 ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
2140 vf->default_lan_addr.addr);
2141 }
2142 set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
2143
2144 err:
2145 /* send the response back to the VF */
2146 ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES,
2147 aq_ret, (u8 *)vfres, len);
2148
2149 kfree(vfres);
2150 return ret;
2151 }
2152
2153 /**
2154 * i40e_vc_config_promiscuous_mode_msg
2155 * @vf: pointer to the VF info
2156 * @msg: pointer to the msg buffer
2157 *
2158 * called from the VF to configure the promiscuous mode of
2159 * VF vsis
2160 **/
i40e_vc_config_promiscuous_mode_msg(struct i40e_vf * vf,u8 * msg)2161 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf, u8 *msg)
2162 {
2163 struct virtchnl_promisc_info *info =
2164 (struct virtchnl_promisc_info *)msg;
2165 struct i40e_pf *pf = vf->pf;
2166 i40e_status aq_ret = 0;
2167 bool allmulti = false;
2168 bool alluni = false;
2169
2170 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2171 aq_ret = I40E_ERR_PARAM;
2172 goto err_out;
2173 }
2174 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2175 dev_err(&pf->pdev->dev,
2176 "Unprivileged VF %d is attempting to configure promiscuous mode\n",
2177 vf->vf_id);
2178
2179 /* Lie to the VF on purpose, because this is an error we can
2180 * ignore. Unprivileged VF is not a virtual channel error.
2181 */
2182 aq_ret = 0;
2183 goto err_out;
2184 }
2185
2186 if (info->flags > I40E_MAX_VF_PROMISC_FLAGS) {
2187 aq_ret = I40E_ERR_PARAM;
2188 goto err_out;
2189 }
2190
2191 if (!i40e_vc_isvalid_vsi_id(vf, info->vsi_id)) {
2192 aq_ret = I40E_ERR_PARAM;
2193 goto err_out;
2194 }
2195
2196 /* Multicast promiscuous handling*/
2197 if (info->flags & FLAG_VF_MULTICAST_PROMISC)
2198 allmulti = true;
2199
2200 if (info->flags & FLAG_VF_UNICAST_PROMISC)
2201 alluni = true;
2202 aq_ret = i40e_config_vf_promiscuous_mode(vf, info->vsi_id, allmulti,
2203 alluni);
2204 if (aq_ret)
2205 goto err_out;
2206
2207 if (allmulti) {
2208 if (!test_and_set_bit(I40E_VF_STATE_MC_PROMISC,
2209 &vf->vf_states))
2210 dev_info(&pf->pdev->dev,
2211 "VF %d successfully set multicast promiscuous mode\n",
2212 vf->vf_id);
2213 } else if (test_and_clear_bit(I40E_VF_STATE_MC_PROMISC,
2214 &vf->vf_states))
2215 dev_info(&pf->pdev->dev,
2216 "VF %d successfully unset multicast promiscuous mode\n",
2217 vf->vf_id);
2218
2219 if (alluni) {
2220 if (!test_and_set_bit(I40E_VF_STATE_UC_PROMISC,
2221 &vf->vf_states))
2222 dev_info(&pf->pdev->dev,
2223 "VF %d successfully set unicast promiscuous mode\n",
2224 vf->vf_id);
2225 } else if (test_and_clear_bit(I40E_VF_STATE_UC_PROMISC,
2226 &vf->vf_states))
2227 dev_info(&pf->pdev->dev,
2228 "VF %d successfully unset unicast promiscuous mode\n",
2229 vf->vf_id);
2230
2231 err_out:
2232 /* send the response to the VF */
2233 return i40e_vc_send_resp_to_vf(vf,
2234 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
2235 aq_ret);
2236 }
2237
2238 /**
2239 * i40e_vc_config_queues_msg
2240 * @vf: pointer to the VF info
2241 * @msg: pointer to the msg buffer
2242 *
2243 * called from the VF to configure the rx/tx
2244 * queues
2245 **/
i40e_vc_config_queues_msg(struct i40e_vf * vf,u8 * msg)2246 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg)
2247 {
2248 struct virtchnl_vsi_queue_config_info *qci =
2249 (struct virtchnl_vsi_queue_config_info *)msg;
2250 struct virtchnl_queue_pair_info *qpi;
2251 u16 vsi_id, vsi_queue_id = 0;
2252 struct i40e_pf *pf = vf->pf;
2253 i40e_status aq_ret = 0;
2254 int i, j = 0, idx = 0;
2255 struct i40e_vsi *vsi;
2256 u16 num_qps_all = 0;
2257
2258 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2259 aq_ret = I40E_ERR_PARAM;
2260 goto error_param;
2261 }
2262
2263 if (!i40e_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
2264 aq_ret = I40E_ERR_PARAM;
2265 goto error_param;
2266 }
2267
2268 if (qci->num_queue_pairs > I40E_MAX_VF_QUEUES) {
2269 aq_ret = I40E_ERR_PARAM;
2270 goto error_param;
2271 }
2272
2273 if (vf->adq_enabled) {
2274 for (i = 0; i < vf->num_tc; i++)
2275 num_qps_all += vf->ch[i].num_qps;
2276 if (num_qps_all != qci->num_queue_pairs) {
2277 aq_ret = I40E_ERR_PARAM;
2278 goto error_param;
2279 }
2280 }
2281
2282 vsi_id = qci->vsi_id;
2283
2284 for (i = 0; i < qci->num_queue_pairs; i++) {
2285 qpi = &qci->qpair[i];
2286
2287 if (!vf->adq_enabled) {
2288 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
2289 qpi->txq.queue_id)) {
2290 aq_ret = I40E_ERR_PARAM;
2291 goto error_param;
2292 }
2293
2294 vsi_queue_id = qpi->txq.queue_id;
2295
2296 if (qpi->txq.vsi_id != qci->vsi_id ||
2297 qpi->rxq.vsi_id != qci->vsi_id ||
2298 qpi->rxq.queue_id != vsi_queue_id) {
2299 aq_ret = I40E_ERR_PARAM;
2300 goto error_param;
2301 }
2302 }
2303
2304 if (vf->adq_enabled) {
2305 if (idx >= ARRAY_SIZE(vf->ch)) {
2306 aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
2307 goto error_param;
2308 }
2309 vsi_id = vf->ch[idx].vsi_id;
2310 }
2311
2312 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
2313 &qpi->rxq) ||
2314 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
2315 &qpi->txq)) {
2316 aq_ret = I40E_ERR_PARAM;
2317 goto error_param;
2318 }
2319
2320 /* For ADq there can be up to 4 VSIs with max 4 queues each.
2321 * VF does not know about these additional VSIs and all
2322 * it cares is about its own queues. PF configures these queues
2323 * to its appropriate VSIs based on TC mapping
2324 */
2325 if (vf->adq_enabled) {
2326 if (idx >= ARRAY_SIZE(vf->ch)) {
2327 aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
2328 goto error_param;
2329 }
2330 if (j == (vf->ch[idx].num_qps - 1)) {
2331 idx++;
2332 j = 0; /* resetting the queue count */
2333 vsi_queue_id = 0;
2334 } else {
2335 j++;
2336 vsi_queue_id++;
2337 }
2338 }
2339 }
2340 /* set vsi num_queue_pairs in use to num configured by VF */
2341 if (!vf->adq_enabled) {
2342 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs =
2343 qci->num_queue_pairs;
2344 } else {
2345 for (i = 0; i < vf->num_tc; i++) {
2346 vsi = pf->vsi[vf->ch[i].vsi_idx];
2347 vsi->num_queue_pairs = vf->ch[i].num_qps;
2348
2349 if (i40e_update_adq_vsi_queues(vsi, i)) {
2350 aq_ret = I40E_ERR_CONFIG;
2351 goto error_param;
2352 }
2353 }
2354 }
2355
2356 error_param:
2357 /* send the response to the VF */
2358 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES,
2359 aq_ret);
2360 }
2361
2362 /**
2363 * i40e_validate_queue_map - check queue map is valid
2364 * @vf: the VF structure pointer
2365 * @vsi_id: vsi id
2366 * @queuemap: Tx or Rx queue map
2367 *
2368 * check if Tx or Rx queue map is valid
2369 **/
i40e_validate_queue_map(struct i40e_vf * vf,u16 vsi_id,unsigned long queuemap)2370 static int i40e_validate_queue_map(struct i40e_vf *vf, u16 vsi_id,
2371 unsigned long queuemap)
2372 {
2373 u16 vsi_queue_id, queue_id;
2374
2375 for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
2376 if (vf->adq_enabled) {
2377 vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
2378 queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
2379 } else {
2380 queue_id = vsi_queue_id;
2381 }
2382
2383 if (!i40e_vc_isvalid_queue_id(vf, vsi_id, queue_id))
2384 return -EINVAL;
2385 }
2386
2387 return 0;
2388 }
2389
2390 /**
2391 * i40e_vc_config_irq_map_msg
2392 * @vf: pointer to the VF info
2393 * @msg: pointer to the msg buffer
2394 *
2395 * called from the VF to configure the irq to
2396 * queue map
2397 **/
i40e_vc_config_irq_map_msg(struct i40e_vf * vf,u8 * msg)2398 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg)
2399 {
2400 struct virtchnl_irq_map_info *irqmap_info =
2401 (struct virtchnl_irq_map_info *)msg;
2402 struct virtchnl_vector_map *map;
2403 u16 vsi_id;
2404 i40e_status aq_ret = 0;
2405 int i;
2406
2407 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2408 aq_ret = I40E_ERR_PARAM;
2409 goto error_param;
2410 }
2411
2412 if (irqmap_info->num_vectors >
2413 vf->pf->hw.func_caps.num_msix_vectors_vf) {
2414 aq_ret = I40E_ERR_PARAM;
2415 goto error_param;
2416 }
2417
2418 for (i = 0; i < irqmap_info->num_vectors; i++) {
2419 map = &irqmap_info->vecmap[i];
2420 /* validate msg params */
2421 if (!i40e_vc_isvalid_vector_id(vf, map->vector_id) ||
2422 !i40e_vc_isvalid_vsi_id(vf, map->vsi_id)) {
2423 aq_ret = I40E_ERR_PARAM;
2424 goto error_param;
2425 }
2426 vsi_id = map->vsi_id;
2427
2428 if (i40e_validate_queue_map(vf, vsi_id, map->rxq_map)) {
2429 aq_ret = I40E_ERR_PARAM;
2430 goto error_param;
2431 }
2432
2433 if (i40e_validate_queue_map(vf, vsi_id, map->txq_map)) {
2434 aq_ret = I40E_ERR_PARAM;
2435 goto error_param;
2436 }
2437
2438 i40e_config_irq_link_list(vf, vsi_id, map);
2439 }
2440 error_param:
2441 /* send the response to the VF */
2442 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP,
2443 aq_ret);
2444 }
2445
2446 /**
2447 * i40e_ctrl_vf_tx_rings
2448 * @vsi: the SRIOV VSI being configured
2449 * @q_map: bit map of the queues to be enabled
2450 * @enable: start or stop the queue
2451 **/
i40e_ctrl_vf_tx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2452 static int i40e_ctrl_vf_tx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2453 bool enable)
2454 {
2455 struct i40e_pf *pf = vsi->back;
2456 int ret = 0;
2457 u16 q_id;
2458
2459 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2460 ret = i40e_control_wait_tx_q(vsi->seid, pf,
2461 vsi->base_queue + q_id,
2462 false /*is xdp*/, enable);
2463 if (ret)
2464 break;
2465 }
2466 return ret;
2467 }
2468
2469 /**
2470 * i40e_ctrl_vf_rx_rings
2471 * @vsi: the SRIOV VSI being configured
2472 * @q_map: bit map of the queues to be enabled
2473 * @enable: start or stop the queue
2474 **/
i40e_ctrl_vf_rx_rings(struct i40e_vsi * vsi,unsigned long q_map,bool enable)2475 static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
2476 bool enable)
2477 {
2478 struct i40e_pf *pf = vsi->back;
2479 int ret = 0;
2480 u16 q_id;
2481
2482 for_each_set_bit(q_id, &q_map, I40E_MAX_VF_QUEUES) {
2483 ret = i40e_control_wait_rx_q(pf, vsi->base_queue + q_id,
2484 enable);
2485 if (ret)
2486 break;
2487 }
2488 return ret;
2489 }
2490
2491 /**
2492 * i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
2493 * @vqs: virtchnl_queue_select structure containing bitmaps to validate
2494 *
2495 * Returns true if validation was successful, else false.
2496 */
i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select * vqs)2497 static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
2498 {
2499 if ((!vqs->rx_queues && !vqs->tx_queues) ||
2500 vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
2501 vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
2502 return false;
2503
2504 return true;
2505 }
2506
2507 /**
2508 * i40e_vc_enable_queues_msg
2509 * @vf: pointer to the VF info
2510 * @msg: pointer to the msg buffer
2511 *
2512 * called from the VF to enable all or specific queue(s)
2513 **/
i40e_vc_enable_queues_msg(struct i40e_vf * vf,u8 * msg)2514 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
2515 {
2516 struct virtchnl_queue_select *vqs =
2517 (struct virtchnl_queue_select *)msg;
2518 struct i40e_pf *pf = vf->pf;
2519 i40e_status aq_ret = 0;
2520 int i;
2521
2522 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
2523 aq_ret = I40E_ERR_PARAM;
2524 goto error_param;
2525 }
2526
2527 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2528 aq_ret = I40E_ERR_PARAM;
2529 goto error_param;
2530 }
2531
2532 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2533 aq_ret = I40E_ERR_PARAM;
2534 goto error_param;
2535 }
2536
2537 /* Use the queue bit map sent by the VF */
2538 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2539 true)) {
2540 aq_ret = I40E_ERR_TIMEOUT;
2541 goto error_param;
2542 }
2543 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2544 true)) {
2545 aq_ret = I40E_ERR_TIMEOUT;
2546 goto error_param;
2547 }
2548
2549 /* need to start the rings for additional ADq VSI's as well */
2550 if (vf->adq_enabled) {
2551 /* zero belongs to LAN VSI */
2552 for (i = 1; i < vf->num_tc; i++) {
2553 if (i40e_vsi_start_rings(pf->vsi[vf->ch[i].vsi_idx]))
2554 aq_ret = I40E_ERR_TIMEOUT;
2555 }
2556 }
2557
2558 error_param:
2559 /* send the response to the VF */
2560 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES,
2561 aq_ret);
2562 }
2563
2564 /**
2565 * i40e_vc_disable_queues_msg
2566 * @vf: pointer to the VF info
2567 * @msg: pointer to the msg buffer
2568 *
2569 * called from the VF to disable all or specific
2570 * queue(s)
2571 **/
i40e_vc_disable_queues_msg(struct i40e_vf * vf,u8 * msg)2572 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
2573 {
2574 struct virtchnl_queue_select *vqs =
2575 (struct virtchnl_queue_select *)msg;
2576 struct i40e_pf *pf = vf->pf;
2577 i40e_status aq_ret = 0;
2578
2579 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2580 aq_ret = I40E_ERR_PARAM;
2581 goto error_param;
2582 }
2583
2584 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2585 aq_ret = I40E_ERR_PARAM;
2586 goto error_param;
2587 }
2588
2589 if (!i40e_vc_validate_vqs_bitmaps(vqs)) {
2590 aq_ret = I40E_ERR_PARAM;
2591 goto error_param;
2592 }
2593
2594 /* Use the queue bit map sent by the VF */
2595 if (i40e_ctrl_vf_tx_rings(pf->vsi[vf->lan_vsi_idx], vqs->tx_queues,
2596 false)) {
2597 aq_ret = I40E_ERR_TIMEOUT;
2598 goto error_param;
2599 }
2600 if (i40e_ctrl_vf_rx_rings(pf->vsi[vf->lan_vsi_idx], vqs->rx_queues,
2601 false)) {
2602 aq_ret = I40E_ERR_TIMEOUT;
2603 goto error_param;
2604 }
2605 error_param:
2606 /* send the response to the VF */
2607 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES,
2608 aq_ret);
2609 }
2610
2611 /**
2612 * i40e_check_enough_queue - find big enough queue number
2613 * @vf: pointer to the VF info
2614 * @needed: the number of items needed
2615 *
2616 * Returns the base item index of the queue, or negative for error
2617 **/
i40e_check_enough_queue(struct i40e_vf * vf,u16 needed)2618 static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
2619 {
2620 unsigned int i, cur_queues, more, pool_size;
2621 struct i40e_lump_tracking *pile;
2622 struct i40e_pf *pf = vf->pf;
2623 struct i40e_vsi *vsi;
2624
2625 vsi = pf->vsi[vf->lan_vsi_idx];
2626 cur_queues = vsi->alloc_queue_pairs;
2627
2628 /* if current allocated queues are enough for need */
2629 if (cur_queues >= needed)
2630 return vsi->base_queue;
2631
2632 pile = pf->qp_pile;
2633 if (cur_queues > 0) {
2634 /* if the allocated queues are not zero
2635 * just check if there are enough queues for more
2636 * behind the allocated queues.
2637 */
2638 more = needed - cur_queues;
2639 for (i = vsi->base_queue + cur_queues;
2640 i < pile->num_entries; i++) {
2641 if (pile->list[i] & I40E_PILE_VALID_BIT)
2642 break;
2643
2644 if (more-- == 1)
2645 /* there is enough */
2646 return vsi->base_queue;
2647 }
2648 }
2649
2650 pool_size = 0;
2651 for (i = 0; i < pile->num_entries; i++) {
2652 if (pile->list[i] & I40E_PILE_VALID_BIT) {
2653 pool_size = 0;
2654 continue;
2655 }
2656 if (needed <= ++pool_size)
2657 /* there is enough */
2658 return i;
2659 }
2660
2661 return -ENOMEM;
2662 }
2663
2664 /**
2665 * i40e_vc_request_queues_msg
2666 * @vf: pointer to the VF info
2667 * @msg: pointer to the msg buffer
2668 *
2669 * VFs get a default number of queues but can use this message to request a
2670 * different number. If the request is successful, PF will reset the VF and
2671 * return 0. If unsuccessful, PF will send message informing VF of number of
2672 * available queues and return result of sending VF a message.
2673 **/
i40e_vc_request_queues_msg(struct i40e_vf * vf,u8 * msg)2674 static int i40e_vc_request_queues_msg(struct i40e_vf *vf, u8 *msg)
2675 {
2676 struct virtchnl_vf_res_request *vfres =
2677 (struct virtchnl_vf_res_request *)msg;
2678 u16 req_pairs = vfres->num_queue_pairs;
2679 u8 cur_pairs = vf->num_queue_pairs;
2680 struct i40e_pf *pf = vf->pf;
2681
2682 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE))
2683 return -EINVAL;
2684
2685 if (req_pairs > I40E_MAX_VF_QUEUES) {
2686 dev_err(&pf->pdev->dev,
2687 "VF %d tried to request more than %d queues.\n",
2688 vf->vf_id,
2689 I40E_MAX_VF_QUEUES);
2690 vfres->num_queue_pairs = I40E_MAX_VF_QUEUES;
2691 } else if (req_pairs - cur_pairs > pf->queues_left) {
2692 dev_warn(&pf->pdev->dev,
2693 "VF %d requested %d more queues, but only %d left.\n",
2694 vf->vf_id,
2695 req_pairs - cur_pairs,
2696 pf->queues_left);
2697 vfres->num_queue_pairs = pf->queues_left + cur_pairs;
2698 } else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
2699 dev_warn(&pf->pdev->dev,
2700 "VF %d requested %d more queues, but there is not enough for it.\n",
2701 vf->vf_id,
2702 req_pairs - cur_pairs);
2703 vfres->num_queue_pairs = cur_pairs;
2704 } else {
2705 /* successful request */
2706 vf->num_req_queues = req_pairs;
2707 i40e_vc_reset_vf(vf, true);
2708 return 0;
2709 }
2710
2711 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
2712 (u8 *)vfres, sizeof(*vfres));
2713 }
2714
2715 /**
2716 * i40e_vc_get_stats_msg
2717 * @vf: pointer to the VF info
2718 * @msg: pointer to the msg buffer
2719 *
2720 * called from the VF to get vsi stats
2721 **/
i40e_vc_get_stats_msg(struct i40e_vf * vf,u8 * msg)2722 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg)
2723 {
2724 struct virtchnl_queue_select *vqs =
2725 (struct virtchnl_queue_select *)msg;
2726 struct i40e_pf *pf = vf->pf;
2727 struct i40e_eth_stats stats;
2728 i40e_status aq_ret = 0;
2729 struct i40e_vsi *vsi;
2730
2731 memset(&stats, 0, sizeof(struct i40e_eth_stats));
2732
2733 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
2734 aq_ret = I40E_ERR_PARAM;
2735 goto error_param;
2736 }
2737
2738 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2739 aq_ret = I40E_ERR_PARAM;
2740 goto error_param;
2741 }
2742
2743 vsi = pf->vsi[vf->lan_vsi_idx];
2744 if (!vsi) {
2745 aq_ret = I40E_ERR_PARAM;
2746 goto error_param;
2747 }
2748 i40e_update_eth_stats(vsi);
2749 stats = vsi->eth_stats;
2750
2751 error_param:
2752 /* send the response back to the VF */
2753 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, aq_ret,
2754 (u8 *)&stats, sizeof(stats));
2755 }
2756
2757 /* If the VF is not trusted restrict the number of MAC/VLAN it can program
2758 * MAC filters: 16 for multicast, 1 for MAC, 1 for broadcast
2759 */
2760 #define I40E_VC_MAX_MAC_ADDR_PER_VF (16 + 1 + 1)
2761 #define I40E_VC_MAX_VLAN_PER_VF 16
2762
2763 /**
2764 * i40e_check_vf_permission
2765 * @vf: pointer to the VF info
2766 * @al: MAC address list from virtchnl
2767 *
2768 * Check that the given list of MAC addresses is allowed. Will return -EPERM
2769 * if any address in the list is not valid. Checks the following conditions:
2770 *
2771 * 1) broadcast and zero addresses are never valid
2772 * 2) unicast addresses are not allowed if the VMM has administratively set
2773 * the VF MAC address, unless the VF is marked as privileged.
2774 * 3) There is enough space to add all the addresses.
2775 *
2776 * Note that to guarantee consistency, it is expected this function be called
2777 * while holding the mac_filter_hash_lock, as otherwise the current number of
2778 * addresses might not be accurate.
2779 **/
i40e_check_vf_permission(struct i40e_vf * vf,struct virtchnl_ether_addr_list * al)2780 static inline int i40e_check_vf_permission(struct i40e_vf *vf,
2781 struct virtchnl_ether_addr_list *al)
2782 {
2783 struct i40e_pf *pf = vf->pf;
2784 struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
2785 int mac2add_cnt = 0;
2786 int i;
2787
2788 for (i = 0; i < al->num_elements; i++) {
2789 struct i40e_mac_filter *f;
2790 u8 *addr = al->list[i].addr;
2791
2792 if (is_broadcast_ether_addr(addr) ||
2793 is_zero_ether_addr(addr)) {
2794 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
2795 addr);
2796 return I40E_ERR_INVALID_MAC_ADDR;
2797 }
2798
2799 /* If the host VMM administrator has set the VF MAC address
2800 * administratively via the ndo_set_vf_mac command then deny
2801 * permission to the VF to add or delete unicast MAC addresses.
2802 * Unless the VF is privileged and then it can do whatever.
2803 * The VF may request to set the MAC address filter already
2804 * assigned to it so do not return an error in that case.
2805 */
2806 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2807 !is_multicast_ether_addr(addr) && vf->pf_set_mac &&
2808 !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
2809 dev_err(&pf->pdev->dev,
2810 "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
2811 return -EPERM;
2812 }
2813
2814 /*count filters that really will be added*/
2815 f = i40e_find_mac(vsi, addr);
2816 if (!f)
2817 ++mac2add_cnt;
2818 }
2819
2820 /* If this VF is not privileged, then we can't add more than a limited
2821 * number of addresses. Check to make sure that the additions do not
2822 * push us over the limit.
2823 */
2824 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
2825 (i40e_count_filters(vsi) + mac2add_cnt) >
2826 I40E_VC_MAX_MAC_ADDR_PER_VF) {
2827 dev_err(&pf->pdev->dev,
2828 "Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
2829 return -EPERM;
2830 }
2831 return 0;
2832 }
2833
2834 /**
2835 * i40e_vc_add_mac_addr_msg
2836 * @vf: pointer to the VF info
2837 * @msg: pointer to the msg buffer
2838 *
2839 * add guest mac address filter
2840 **/
i40e_vc_add_mac_addr_msg(struct i40e_vf * vf,u8 * msg)2841 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2842 {
2843 struct virtchnl_ether_addr_list *al =
2844 (struct virtchnl_ether_addr_list *)msg;
2845 struct i40e_pf *pf = vf->pf;
2846 struct i40e_vsi *vsi = NULL;
2847 i40e_status ret = 0;
2848 int i;
2849
2850 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
2851 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
2852 ret = I40E_ERR_PARAM;
2853 goto error_param;
2854 }
2855
2856 vsi = pf->vsi[vf->lan_vsi_idx];
2857
2858 /* Lock once, because all function inside for loop accesses VSI's
2859 * MAC filter list which needs to be protected using same lock.
2860 */
2861 spin_lock_bh(&vsi->mac_filter_hash_lock);
2862
2863 ret = i40e_check_vf_permission(vf, al);
2864 if (ret) {
2865 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2866 goto error_param;
2867 }
2868
2869 /* add new addresses to the list */
2870 for (i = 0; i < al->num_elements; i++) {
2871 struct i40e_mac_filter *f;
2872
2873 f = i40e_find_mac(vsi, al->list[i].addr);
2874 if (!f) {
2875 f = i40e_add_mac_filter(vsi, al->list[i].addr);
2876
2877 if (!f) {
2878 dev_err(&pf->pdev->dev,
2879 "Unable to add MAC filter %pM for VF %d\n",
2880 al->list[i].addr, vf->vf_id);
2881 ret = I40E_ERR_PARAM;
2882 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2883 goto error_param;
2884 }
2885 if (is_valid_ether_addr(al->list[i].addr) &&
2886 is_zero_ether_addr(vf->default_lan_addr.addr))
2887 ether_addr_copy(vf->default_lan_addr.addr,
2888 al->list[i].addr);
2889 }
2890 }
2891 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2892
2893 /* program the updated filter list */
2894 ret = i40e_sync_vsi_filters(vsi);
2895 if (ret)
2896 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2897 vf->vf_id, ret);
2898
2899 error_param:
2900 /* send the response to the VF */
2901 return i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_ETH_ADDR,
2902 ret, NULL, 0);
2903 }
2904
2905 /**
2906 * i40e_vc_del_mac_addr_msg
2907 * @vf: pointer to the VF info
2908 * @msg: pointer to the msg buffer
2909 *
2910 * remove guest mac address filter
2911 **/
i40e_vc_del_mac_addr_msg(struct i40e_vf * vf,u8 * msg)2912 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
2913 {
2914 struct virtchnl_ether_addr_list *al =
2915 (struct virtchnl_ether_addr_list *)msg;
2916 bool was_unimac_deleted = false;
2917 struct i40e_pf *pf = vf->pf;
2918 struct i40e_vsi *vsi = NULL;
2919 i40e_status ret = 0;
2920 int i;
2921
2922 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
2923 !i40e_vc_isvalid_vsi_id(vf, al->vsi_id)) {
2924 ret = I40E_ERR_PARAM;
2925 goto error_param;
2926 }
2927
2928 for (i = 0; i < al->num_elements; i++) {
2929 if (is_broadcast_ether_addr(al->list[i].addr) ||
2930 is_zero_ether_addr(al->list[i].addr)) {
2931 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
2932 al->list[i].addr, vf->vf_id);
2933 ret = I40E_ERR_INVALID_MAC_ADDR;
2934 goto error_param;
2935 }
2936 if (ether_addr_equal(al->list[i].addr, vf->default_lan_addr.addr))
2937 was_unimac_deleted = true;
2938 }
2939 vsi = pf->vsi[vf->lan_vsi_idx];
2940
2941 spin_lock_bh(&vsi->mac_filter_hash_lock);
2942 /* delete addresses from the list */
2943 for (i = 0; i < al->num_elements; i++)
2944 if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
2945 ret = I40E_ERR_INVALID_MAC_ADDR;
2946 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2947 goto error_param;
2948 }
2949
2950 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2951
2952 /* program the updated filter list */
2953 ret = i40e_sync_vsi_filters(vsi);
2954 if (ret)
2955 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
2956 vf->vf_id, ret);
2957
2958 if (vf->trusted && was_unimac_deleted) {
2959 struct i40e_mac_filter *f;
2960 struct hlist_node *h;
2961 u8 *macaddr = NULL;
2962 int bkt;
2963
2964 /* set last unicast mac address as default */
2965 spin_lock_bh(&vsi->mac_filter_hash_lock);
2966 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2967 if (is_valid_ether_addr(f->macaddr))
2968 macaddr = f->macaddr;
2969 }
2970 if (macaddr)
2971 ether_addr_copy(vf->default_lan_addr.addr, macaddr);
2972 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2973 }
2974 error_param:
2975 /* send the response to the VF */
2976 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_ETH_ADDR, ret);
2977 }
2978
2979 /**
2980 * i40e_vc_add_vlan_msg
2981 * @vf: pointer to the VF info
2982 * @msg: pointer to the msg buffer
2983 *
2984 * program guest vlan id
2985 **/
i40e_vc_add_vlan_msg(struct i40e_vf * vf,u8 * msg)2986 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg)
2987 {
2988 struct virtchnl_vlan_filter_list *vfl =
2989 (struct virtchnl_vlan_filter_list *)msg;
2990 struct i40e_pf *pf = vf->pf;
2991 struct i40e_vsi *vsi = NULL;
2992 i40e_status aq_ret = 0;
2993 int i;
2994
2995 if ((vf->num_vlan >= I40E_VC_MAX_VLAN_PER_VF) &&
2996 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
2997 dev_err(&pf->pdev->dev,
2998 "VF is not trusted, switch the VF to trusted to add more VLAN addresses\n");
2999 goto error_param;
3000 }
3001 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3002 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3003 aq_ret = I40E_ERR_PARAM;
3004 goto error_param;
3005 }
3006
3007 for (i = 0; i < vfl->num_elements; i++) {
3008 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3009 aq_ret = I40E_ERR_PARAM;
3010 dev_err(&pf->pdev->dev,
3011 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
3012 goto error_param;
3013 }
3014 }
3015 vsi = pf->vsi[vf->lan_vsi_idx];
3016 if (vsi->info.pvid) {
3017 aq_ret = I40E_ERR_PARAM;
3018 goto error_param;
3019 }
3020
3021 i40e_vlan_stripping_enable(vsi);
3022 for (i = 0; i < vfl->num_elements; i++) {
3023 /* add new VLAN filter */
3024 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
3025 if (!ret)
3026 vf->num_vlan++;
3027
3028 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3029 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3030 true,
3031 vfl->vlan_id[i],
3032 NULL);
3033 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3034 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3035 true,
3036 vfl->vlan_id[i],
3037 NULL);
3038
3039 if (ret)
3040 dev_err(&pf->pdev->dev,
3041 "Unable to add VLAN filter %d for VF %d, error %d\n",
3042 vfl->vlan_id[i], vf->vf_id, ret);
3043 }
3044
3045 error_param:
3046 /* send the response to the VF */
3047 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, aq_ret);
3048 }
3049
3050 /**
3051 * i40e_vc_remove_vlan_msg
3052 * @vf: pointer to the VF info
3053 * @msg: pointer to the msg buffer
3054 *
3055 * remove programmed guest vlan id
3056 **/
i40e_vc_remove_vlan_msg(struct i40e_vf * vf,u8 * msg)3057 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg)
3058 {
3059 struct virtchnl_vlan_filter_list *vfl =
3060 (struct virtchnl_vlan_filter_list *)msg;
3061 struct i40e_pf *pf = vf->pf;
3062 struct i40e_vsi *vsi = NULL;
3063 i40e_status aq_ret = 0;
3064 int i;
3065
3066 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3067 !i40e_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
3068 aq_ret = I40E_ERR_PARAM;
3069 goto error_param;
3070 }
3071
3072 for (i = 0; i < vfl->num_elements; i++) {
3073 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
3074 aq_ret = I40E_ERR_PARAM;
3075 goto error_param;
3076 }
3077 }
3078
3079 vsi = pf->vsi[vf->lan_vsi_idx];
3080 if (vsi->info.pvid) {
3081 if (vfl->num_elements > 1 || vfl->vlan_id[0])
3082 aq_ret = I40E_ERR_PARAM;
3083 goto error_param;
3084 }
3085
3086 for (i = 0; i < vfl->num_elements; i++) {
3087 i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
3088 vf->num_vlan--;
3089
3090 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
3091 i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
3092 false,
3093 vfl->vlan_id[i],
3094 NULL);
3095 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
3096 i40e_aq_set_vsi_mc_promisc_on_vlan(&pf->hw, vsi->seid,
3097 false,
3098 vfl->vlan_id[i],
3099 NULL);
3100 }
3101
3102 error_param:
3103 /* send the response to the VF */
3104 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, aq_ret);
3105 }
3106
3107 /**
3108 * i40e_vc_iwarp_msg
3109 * @vf: pointer to the VF info
3110 * @msg: pointer to the msg buffer
3111 * @msglen: msg length
3112 *
3113 * called from the VF for the iwarp msgs
3114 **/
i40e_vc_iwarp_msg(struct i40e_vf * vf,u8 * msg,u16 msglen)3115 static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
3116 {
3117 struct i40e_pf *pf = vf->pf;
3118 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
3119 i40e_status aq_ret = 0;
3120
3121 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3122 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
3123 aq_ret = I40E_ERR_PARAM;
3124 goto error_param;
3125 }
3126
3127 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
3128 msg, msglen);
3129
3130 error_param:
3131 /* send the response to the VF */
3132 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_IWARP,
3133 aq_ret);
3134 }
3135
3136 /**
3137 * i40e_vc_iwarp_qvmap_msg
3138 * @vf: pointer to the VF info
3139 * @msg: pointer to the msg buffer
3140 * @config: config qvmap or release it
3141 *
3142 * called from the VF for the iwarp msgs
3143 **/
i40e_vc_iwarp_qvmap_msg(struct i40e_vf * vf,u8 * msg,bool config)3144 static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, bool config)
3145 {
3146 struct virtchnl_iwarp_qvlist_info *qvlist_info =
3147 (struct virtchnl_iwarp_qvlist_info *)msg;
3148 i40e_status aq_ret = 0;
3149
3150 if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states) ||
3151 !test_bit(I40E_VF_STATE_IWARPENA, &vf->vf_states)) {
3152 aq_ret = I40E_ERR_PARAM;
3153 goto error_param;
3154 }
3155
3156 if (config) {
3157 if (i40e_config_iwarp_qvlist(vf, qvlist_info))
3158 aq_ret = I40E_ERR_PARAM;
3159 } else {
3160 i40e_release_iwarp_qvlist(vf);
3161 }
3162
3163 error_param:
3164 /* send the response to the VF */
3165 return i40e_vc_send_resp_to_vf(vf,
3166 config ? VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP :
3167 VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP,
3168 aq_ret);
3169 }
3170
3171 /**
3172 * i40e_vc_config_rss_key
3173 * @vf: pointer to the VF info
3174 * @msg: pointer to the msg buffer
3175 *
3176 * Configure the VF's RSS key
3177 **/
i40e_vc_config_rss_key(struct i40e_vf * vf,u8 * msg)3178 static int i40e_vc_config_rss_key(struct i40e_vf *vf, u8 *msg)
3179 {
3180 struct virtchnl_rss_key *vrk =
3181 (struct virtchnl_rss_key *)msg;
3182 struct i40e_pf *pf = vf->pf;
3183 struct i40e_vsi *vsi = NULL;
3184 i40e_status aq_ret = 0;
3185
3186 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3187 !i40e_vc_isvalid_vsi_id(vf, vrk->vsi_id) ||
3188 vrk->key_len != I40E_HKEY_ARRAY_SIZE) {
3189 aq_ret = I40E_ERR_PARAM;
3190 goto err;
3191 }
3192
3193 vsi = pf->vsi[vf->lan_vsi_idx];
3194 aq_ret = i40e_config_rss(vsi, vrk->key, NULL, 0);
3195 err:
3196 /* send the response to the VF */
3197 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY,
3198 aq_ret);
3199 }
3200
3201 /**
3202 * i40e_vc_config_rss_lut
3203 * @vf: pointer to the VF info
3204 * @msg: pointer to the msg buffer
3205 *
3206 * Configure the VF's RSS LUT
3207 **/
i40e_vc_config_rss_lut(struct i40e_vf * vf,u8 * msg)3208 static int i40e_vc_config_rss_lut(struct i40e_vf *vf, u8 *msg)
3209 {
3210 struct virtchnl_rss_lut *vrl =
3211 (struct virtchnl_rss_lut *)msg;
3212 struct i40e_pf *pf = vf->pf;
3213 struct i40e_vsi *vsi = NULL;
3214 i40e_status aq_ret = 0;
3215 u16 i;
3216
3217 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE) ||
3218 !i40e_vc_isvalid_vsi_id(vf, vrl->vsi_id) ||
3219 vrl->lut_entries != I40E_VF_HLUT_ARRAY_SIZE) {
3220 aq_ret = I40E_ERR_PARAM;
3221 goto err;
3222 }
3223
3224 for (i = 0; i < vrl->lut_entries; i++)
3225 if (vrl->lut[i] >= vf->num_queue_pairs) {
3226 aq_ret = I40E_ERR_PARAM;
3227 goto err;
3228 }
3229
3230 vsi = pf->vsi[vf->lan_vsi_idx];
3231 aq_ret = i40e_config_rss(vsi, NULL, vrl->lut, I40E_VF_HLUT_ARRAY_SIZE);
3232 /* send the response to the VF */
3233 err:
3234 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT,
3235 aq_ret);
3236 }
3237
3238 /**
3239 * i40e_vc_get_rss_hena
3240 * @vf: pointer to the VF info
3241 * @msg: pointer to the msg buffer
3242 *
3243 * Return the RSS HENA bits allowed by the hardware
3244 **/
i40e_vc_get_rss_hena(struct i40e_vf * vf,u8 * msg)3245 static int i40e_vc_get_rss_hena(struct i40e_vf *vf, u8 *msg)
3246 {
3247 struct virtchnl_rss_hena *vrh = NULL;
3248 struct i40e_pf *pf = vf->pf;
3249 i40e_status aq_ret = 0;
3250 int len = 0;
3251
3252 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3253 aq_ret = I40E_ERR_PARAM;
3254 goto err;
3255 }
3256 len = sizeof(struct virtchnl_rss_hena);
3257
3258 vrh = kzalloc(len, GFP_KERNEL);
3259 if (!vrh) {
3260 aq_ret = I40E_ERR_NO_MEMORY;
3261 len = 0;
3262 goto err;
3263 }
3264 vrh->hena = i40e_pf_get_default_rss_hena(pf);
3265 err:
3266 /* send the response back to the VF */
3267 aq_ret = i40e_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
3268 aq_ret, (u8 *)vrh, len);
3269 kfree(vrh);
3270 return aq_ret;
3271 }
3272
3273 /**
3274 * i40e_vc_set_rss_hena
3275 * @vf: pointer to the VF info
3276 * @msg: pointer to the msg buffer
3277 *
3278 * Set the RSS HENA bits for the VF
3279 **/
i40e_vc_set_rss_hena(struct i40e_vf * vf,u8 * msg)3280 static int i40e_vc_set_rss_hena(struct i40e_vf *vf, u8 *msg)
3281 {
3282 struct virtchnl_rss_hena *vrh =
3283 (struct virtchnl_rss_hena *)msg;
3284 struct i40e_pf *pf = vf->pf;
3285 struct i40e_hw *hw = &pf->hw;
3286 i40e_status aq_ret = 0;
3287
3288 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3289 aq_ret = I40E_ERR_PARAM;
3290 goto err;
3291 }
3292 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_id), (u32)vrh->hena);
3293 i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_id),
3294 (u32)(vrh->hena >> 32));
3295
3296 /* send the response to the VF */
3297 err:
3298 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, aq_ret);
3299 }
3300
3301 /**
3302 * i40e_vc_enable_vlan_stripping
3303 * @vf: pointer to the VF info
3304 * @msg: pointer to the msg buffer
3305 *
3306 * Enable vlan header stripping for the VF
3307 **/
i40e_vc_enable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3308 static int i40e_vc_enable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3309 {
3310 i40e_status aq_ret = 0;
3311 struct i40e_vsi *vsi;
3312
3313 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3314 aq_ret = I40E_ERR_PARAM;
3315 goto err;
3316 }
3317
3318 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3319 i40e_vlan_stripping_enable(vsi);
3320
3321 /* send the response to the VF */
3322 err:
3323 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
3324 aq_ret);
3325 }
3326
3327 /**
3328 * i40e_vc_disable_vlan_stripping
3329 * @vf: pointer to the VF info
3330 * @msg: pointer to the msg buffer
3331 *
3332 * Disable vlan header stripping for the VF
3333 **/
i40e_vc_disable_vlan_stripping(struct i40e_vf * vf,u8 * msg)3334 static int i40e_vc_disable_vlan_stripping(struct i40e_vf *vf, u8 *msg)
3335 {
3336 i40e_status aq_ret = 0;
3337 struct i40e_vsi *vsi;
3338
3339 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3340 aq_ret = I40E_ERR_PARAM;
3341 goto err;
3342 }
3343
3344 vsi = vf->pf->vsi[vf->lan_vsi_idx];
3345 i40e_vlan_stripping_disable(vsi);
3346
3347 /* send the response to the VF */
3348 err:
3349 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
3350 aq_ret);
3351 }
3352
3353 /**
3354 * i40e_validate_cloud_filter
3355 * @vf: pointer to VF structure
3356 * @tc_filter: pointer to filter requested
3357 *
3358 * This function validates cloud filter programmed as TC filter for ADq
3359 **/
i40e_validate_cloud_filter(struct i40e_vf * vf,struct virtchnl_filter * tc_filter)3360 static int i40e_validate_cloud_filter(struct i40e_vf *vf,
3361 struct virtchnl_filter *tc_filter)
3362 {
3363 struct virtchnl_l4_spec mask = tc_filter->mask.tcp_spec;
3364 struct virtchnl_l4_spec data = tc_filter->data.tcp_spec;
3365 struct i40e_pf *pf = vf->pf;
3366 struct i40e_vsi *vsi = NULL;
3367 struct i40e_mac_filter *f;
3368 struct hlist_node *h;
3369 bool found = false;
3370 int bkt;
3371
3372 if (!tc_filter->action) {
3373 dev_info(&pf->pdev->dev,
3374 "VF %d: Currently ADq doesn't support Drop Action\n",
3375 vf->vf_id);
3376 goto err;
3377 }
3378
3379 /* action_meta is TC number here to which the filter is applied */
3380 if (!tc_filter->action_meta ||
3381 tc_filter->action_meta > I40E_MAX_VF_VSI) {
3382 dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
3383 vf->vf_id, tc_filter->action_meta);
3384 goto err;
3385 }
3386
3387 /* Check filter if it's programmed for advanced mode or basic mode.
3388 * There are two ADq modes (for VF only),
3389 * 1. Basic mode: intended to allow as many filter options as possible
3390 * to be added to a VF in Non-trusted mode. Main goal is
3391 * to add filters to its own MAC and VLAN id.
3392 * 2. Advanced mode: is for allowing filters to be applied other than
3393 * its own MAC or VLAN. This mode requires the VF to be
3394 * Trusted.
3395 */
3396 if (mask.dst_mac[0] && !mask.dst_ip[0]) {
3397 vsi = pf->vsi[vf->lan_vsi_idx];
3398 f = i40e_find_mac(vsi, data.dst_mac);
3399
3400 if (!f) {
3401 dev_info(&pf->pdev->dev,
3402 "Destination MAC %pM doesn't belong to VF %d\n",
3403 data.dst_mac, vf->vf_id);
3404 goto err;
3405 }
3406
3407 if (mask.vlan_id) {
3408 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f,
3409 hlist) {
3410 if (f->vlan == ntohs(data.vlan_id)) {
3411 found = true;
3412 break;
3413 }
3414 }
3415 if (!found) {
3416 dev_info(&pf->pdev->dev,
3417 "VF %d doesn't have any VLAN id %u\n",
3418 vf->vf_id, ntohs(data.vlan_id));
3419 goto err;
3420 }
3421 }
3422 } else {
3423 /* Check if VF is trusted */
3424 if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
3425 dev_err(&pf->pdev->dev,
3426 "VF %d not trusted, make VF trusted to add advanced mode ADq cloud filters\n",
3427 vf->vf_id);
3428 return I40E_ERR_CONFIG;
3429 }
3430 }
3431
3432 if (mask.dst_mac[0] & data.dst_mac[0]) {
3433 if (is_broadcast_ether_addr(data.dst_mac) ||
3434 is_zero_ether_addr(data.dst_mac)) {
3435 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest MAC addr %pM\n",
3436 vf->vf_id, data.dst_mac);
3437 goto err;
3438 }
3439 }
3440
3441 if (mask.src_mac[0] & data.src_mac[0]) {
3442 if (is_broadcast_ether_addr(data.src_mac) ||
3443 is_zero_ether_addr(data.src_mac)) {
3444 dev_info(&pf->pdev->dev, "VF %d: Invalid Source MAC addr %pM\n",
3445 vf->vf_id, data.src_mac);
3446 goto err;
3447 }
3448 }
3449
3450 if (mask.dst_port & data.dst_port) {
3451 if (!data.dst_port) {
3452 dev_info(&pf->pdev->dev, "VF %d: Invalid Dest port\n",
3453 vf->vf_id);
3454 goto err;
3455 }
3456 }
3457
3458 if (mask.src_port & data.src_port) {
3459 if (!data.src_port) {
3460 dev_info(&pf->pdev->dev, "VF %d: Invalid Source port\n",
3461 vf->vf_id);
3462 goto err;
3463 }
3464 }
3465
3466 if (tc_filter->flow_type != VIRTCHNL_TCP_V6_FLOW &&
3467 tc_filter->flow_type != VIRTCHNL_TCP_V4_FLOW) {
3468 dev_info(&pf->pdev->dev, "VF %d: Invalid Flow type\n",
3469 vf->vf_id);
3470 goto err;
3471 }
3472
3473 if (mask.vlan_id & data.vlan_id) {
3474 if (ntohs(data.vlan_id) > I40E_MAX_VLANID) {
3475 dev_info(&pf->pdev->dev, "VF %d: invalid VLAN ID\n",
3476 vf->vf_id);
3477 goto err;
3478 }
3479 }
3480
3481 return I40E_SUCCESS;
3482 err:
3483 return I40E_ERR_CONFIG;
3484 }
3485
3486 /**
3487 * i40e_find_vsi_from_seid - searches for the vsi with the given seid
3488 * @vf: pointer to the VF info
3489 * @seid: seid of the vsi it is searching for
3490 **/
i40e_find_vsi_from_seid(struct i40e_vf * vf,u16 seid)3491 static struct i40e_vsi *i40e_find_vsi_from_seid(struct i40e_vf *vf, u16 seid)
3492 {
3493 struct i40e_pf *pf = vf->pf;
3494 struct i40e_vsi *vsi = NULL;
3495 int i;
3496
3497 for (i = 0; i < vf->num_tc ; i++) {
3498 vsi = i40e_find_vsi_from_id(pf, vf->ch[i].vsi_id);
3499 if (vsi && vsi->seid == seid)
3500 return vsi;
3501 }
3502 return NULL;
3503 }
3504
3505 /**
3506 * i40e_del_all_cloud_filters
3507 * @vf: pointer to the VF info
3508 *
3509 * This function deletes all cloud filters
3510 **/
i40e_del_all_cloud_filters(struct i40e_vf * vf)3511 static void i40e_del_all_cloud_filters(struct i40e_vf *vf)
3512 {
3513 struct i40e_cloud_filter *cfilter = NULL;
3514 struct i40e_pf *pf = vf->pf;
3515 struct i40e_vsi *vsi = NULL;
3516 struct hlist_node *node;
3517 int ret;
3518
3519 hlist_for_each_entry_safe(cfilter, node,
3520 &vf->cloud_filter_list, cloud_node) {
3521 vsi = i40e_find_vsi_from_seid(vf, cfilter->seid);
3522
3523 if (!vsi) {
3524 dev_err(&pf->pdev->dev, "VF %d: no VSI found for matching %u seid, can't delete cloud filter\n",
3525 vf->vf_id, cfilter->seid);
3526 continue;
3527 }
3528
3529 if (cfilter->dst_port)
3530 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
3531 false);
3532 else
3533 ret = i40e_add_del_cloud_filter(vsi, cfilter, false);
3534 if (ret)
3535 dev_err(&pf->pdev->dev,
3536 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3537 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3538 i40e_aq_str(&pf->hw,
3539 pf->hw.aq.asq_last_status));
3540
3541 hlist_del(&cfilter->cloud_node);
3542 kfree(cfilter);
3543 vf->num_cloud_filters--;
3544 }
3545 }
3546
3547 /**
3548 * i40e_vc_del_cloud_filter
3549 * @vf: pointer to the VF info
3550 * @msg: pointer to the msg buffer
3551 *
3552 * This function deletes a cloud filter programmed as TC filter for ADq
3553 **/
i40e_vc_del_cloud_filter(struct i40e_vf * vf,u8 * msg)3554 static int i40e_vc_del_cloud_filter(struct i40e_vf *vf, u8 *msg)
3555 {
3556 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3557 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3558 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3559 struct i40e_cloud_filter cfilter, *cf = NULL;
3560 struct i40e_pf *pf = vf->pf;
3561 struct i40e_vsi *vsi = NULL;
3562 struct hlist_node *node;
3563 i40e_status aq_ret = 0;
3564 int i, ret;
3565
3566 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3567 aq_ret = I40E_ERR_PARAM;
3568 goto err;
3569 }
3570
3571 if (!vf->adq_enabled) {
3572 dev_info(&pf->pdev->dev,
3573 "VF %d: ADq not enabled, can't apply cloud filter\n",
3574 vf->vf_id);
3575 aq_ret = I40E_ERR_PARAM;
3576 goto err;
3577 }
3578
3579 if (i40e_validate_cloud_filter(vf, vcf)) {
3580 dev_info(&pf->pdev->dev,
3581 "VF %d: Invalid input, can't apply cloud filter\n",
3582 vf->vf_id);
3583 aq_ret = I40E_ERR_PARAM;
3584 goto err;
3585 }
3586
3587 memset(&cfilter, 0, sizeof(cfilter));
3588 /* parse destination mac address */
3589 for (i = 0; i < ETH_ALEN; i++)
3590 cfilter.dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3591
3592 /* parse source mac address */
3593 for (i = 0; i < ETH_ALEN; i++)
3594 cfilter.src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3595
3596 cfilter.vlan_id = mask.vlan_id & tcf.vlan_id;
3597 cfilter.dst_port = mask.dst_port & tcf.dst_port;
3598 cfilter.src_port = mask.src_port & tcf.src_port;
3599
3600 switch (vcf->flow_type) {
3601 case VIRTCHNL_TCP_V4_FLOW:
3602 cfilter.n_proto = ETH_P_IP;
3603 if (mask.dst_ip[0] & tcf.dst_ip[0])
3604 memcpy(&cfilter.ip.v4.dst_ip, tcf.dst_ip,
3605 ARRAY_SIZE(tcf.dst_ip));
3606 else if (mask.src_ip[0] & tcf.dst_ip[0])
3607 memcpy(&cfilter.ip.v4.src_ip, tcf.src_ip,
3608 ARRAY_SIZE(tcf.dst_ip));
3609 break;
3610 case VIRTCHNL_TCP_V6_FLOW:
3611 cfilter.n_proto = ETH_P_IPV6;
3612 if (mask.dst_ip[3] & tcf.dst_ip[3])
3613 memcpy(&cfilter.ip.v6.dst_ip6, tcf.dst_ip,
3614 sizeof(cfilter.ip.v6.dst_ip6));
3615 if (mask.src_ip[3] & tcf.src_ip[3])
3616 memcpy(&cfilter.ip.v6.src_ip6, tcf.src_ip,
3617 sizeof(cfilter.ip.v6.src_ip6));
3618 break;
3619 default:
3620 /* TC filter can be configured based on different combinations
3621 * and in this case IP is not a part of filter config
3622 */
3623 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3624 vf->vf_id);
3625 }
3626
3627 /* get the vsi to which the tc belongs to */
3628 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3629 cfilter.seid = vsi->seid;
3630 cfilter.flags = vcf->field_flags;
3631
3632 /* Deleting TC filter */
3633 if (tcf.dst_port)
3634 ret = i40e_add_del_cloud_filter_big_buf(vsi, &cfilter, false);
3635 else
3636 ret = i40e_add_del_cloud_filter(vsi, &cfilter, false);
3637 if (ret) {
3638 dev_err(&pf->pdev->dev,
3639 "VF %d: Failed to delete cloud filter, err %s aq_err %s\n",
3640 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3641 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3642 goto err;
3643 }
3644
3645 hlist_for_each_entry_safe(cf, node,
3646 &vf->cloud_filter_list, cloud_node) {
3647 if (cf->seid != cfilter.seid)
3648 continue;
3649 if (mask.dst_port)
3650 if (cfilter.dst_port != cf->dst_port)
3651 continue;
3652 if (mask.dst_mac[0])
3653 if (!ether_addr_equal(cf->src_mac, cfilter.src_mac))
3654 continue;
3655 /* for ipv4 data to be valid, only first byte of mask is set */
3656 if (cfilter.n_proto == ETH_P_IP && mask.dst_ip[0])
3657 if (memcmp(&cfilter.ip.v4.dst_ip, &cf->ip.v4.dst_ip,
3658 ARRAY_SIZE(tcf.dst_ip)))
3659 continue;
3660 /* for ipv6, mask is set for all sixteen bytes (4 words) */
3661 if (cfilter.n_proto == ETH_P_IPV6 && mask.dst_ip[3])
3662 if (memcmp(&cfilter.ip.v6.dst_ip6, &cf->ip.v6.dst_ip6,
3663 sizeof(cfilter.ip.v6.src_ip6)))
3664 continue;
3665 if (mask.vlan_id)
3666 if (cfilter.vlan_id != cf->vlan_id)
3667 continue;
3668
3669 hlist_del(&cf->cloud_node);
3670 kfree(cf);
3671 vf->num_cloud_filters--;
3672 }
3673
3674 err:
3675 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DEL_CLOUD_FILTER,
3676 aq_ret);
3677 }
3678
3679 /**
3680 * i40e_vc_add_cloud_filter
3681 * @vf: pointer to the VF info
3682 * @msg: pointer to the msg buffer
3683 *
3684 * This function adds a cloud filter programmed as TC filter for ADq
3685 **/
i40e_vc_add_cloud_filter(struct i40e_vf * vf,u8 * msg)3686 static int i40e_vc_add_cloud_filter(struct i40e_vf *vf, u8 *msg)
3687 {
3688 struct virtchnl_filter *vcf = (struct virtchnl_filter *)msg;
3689 struct virtchnl_l4_spec mask = vcf->mask.tcp_spec;
3690 struct virtchnl_l4_spec tcf = vcf->data.tcp_spec;
3691 struct i40e_cloud_filter *cfilter = NULL;
3692 struct i40e_pf *pf = vf->pf;
3693 struct i40e_vsi *vsi = NULL;
3694 i40e_status aq_ret = 0;
3695 int i, ret;
3696
3697 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3698 aq_ret = I40E_ERR_PARAM;
3699 goto err_out;
3700 }
3701
3702 if (!vf->adq_enabled) {
3703 dev_info(&pf->pdev->dev,
3704 "VF %d: ADq is not enabled, can't apply cloud filter\n",
3705 vf->vf_id);
3706 aq_ret = I40E_ERR_PARAM;
3707 goto err_out;
3708 }
3709
3710 if (i40e_validate_cloud_filter(vf, vcf)) {
3711 dev_info(&pf->pdev->dev,
3712 "VF %d: Invalid input/s, can't apply cloud filter\n",
3713 vf->vf_id);
3714 aq_ret = I40E_ERR_PARAM;
3715 goto err_out;
3716 }
3717
3718 cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
3719 if (!cfilter)
3720 return -ENOMEM;
3721
3722 /* parse destination mac address */
3723 for (i = 0; i < ETH_ALEN; i++)
3724 cfilter->dst_mac[i] = mask.dst_mac[i] & tcf.dst_mac[i];
3725
3726 /* parse source mac address */
3727 for (i = 0; i < ETH_ALEN; i++)
3728 cfilter->src_mac[i] = mask.src_mac[i] & tcf.src_mac[i];
3729
3730 cfilter->vlan_id = mask.vlan_id & tcf.vlan_id;
3731 cfilter->dst_port = mask.dst_port & tcf.dst_port;
3732 cfilter->src_port = mask.src_port & tcf.src_port;
3733
3734 switch (vcf->flow_type) {
3735 case VIRTCHNL_TCP_V4_FLOW:
3736 cfilter->n_proto = ETH_P_IP;
3737 if (mask.dst_ip[0] & tcf.dst_ip[0])
3738 memcpy(&cfilter->ip.v4.dst_ip, tcf.dst_ip,
3739 ARRAY_SIZE(tcf.dst_ip));
3740 else if (mask.src_ip[0] & tcf.dst_ip[0])
3741 memcpy(&cfilter->ip.v4.src_ip, tcf.src_ip,
3742 ARRAY_SIZE(tcf.dst_ip));
3743 break;
3744 case VIRTCHNL_TCP_V6_FLOW:
3745 cfilter->n_proto = ETH_P_IPV6;
3746 if (mask.dst_ip[3] & tcf.dst_ip[3])
3747 memcpy(&cfilter->ip.v6.dst_ip6, tcf.dst_ip,
3748 sizeof(cfilter->ip.v6.dst_ip6));
3749 if (mask.src_ip[3] & tcf.src_ip[3])
3750 memcpy(&cfilter->ip.v6.src_ip6, tcf.src_ip,
3751 sizeof(cfilter->ip.v6.src_ip6));
3752 break;
3753 default:
3754 /* TC filter can be configured based on different combinations
3755 * and in this case IP is not a part of filter config
3756 */
3757 dev_info(&pf->pdev->dev, "VF %d: Flow type not configured\n",
3758 vf->vf_id);
3759 }
3760
3761 /* get the VSI to which the TC belongs to */
3762 vsi = pf->vsi[vf->ch[vcf->action_meta].vsi_idx];
3763 cfilter->seid = vsi->seid;
3764 cfilter->flags = vcf->field_flags;
3765
3766 /* Adding cloud filter programmed as TC filter */
3767 if (tcf.dst_port)
3768 ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter, true);
3769 else
3770 ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
3771 if (ret) {
3772 dev_err(&pf->pdev->dev,
3773 "VF %d: Failed to add cloud filter, err %s aq_err %s\n",
3774 vf->vf_id, i40e_stat_str(&pf->hw, ret),
3775 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
3776 goto err_free;
3777 }
3778
3779 INIT_HLIST_NODE(&cfilter->cloud_node);
3780 hlist_add_head(&cfilter->cloud_node, &vf->cloud_filter_list);
3781 /* release the pointer passing it to the collection */
3782 cfilter = NULL;
3783 vf->num_cloud_filters++;
3784 err_free:
3785 kfree(cfilter);
3786 err_out:
3787 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ADD_CLOUD_FILTER,
3788 aq_ret);
3789 }
3790
3791 /**
3792 * i40e_vc_add_qch_msg: Add queue channel and enable ADq
3793 * @vf: pointer to the VF info
3794 * @msg: pointer to the msg buffer
3795 **/
i40e_vc_add_qch_msg(struct i40e_vf * vf,u8 * msg)3796 static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
3797 {
3798 struct virtchnl_tc_info *tci =
3799 (struct virtchnl_tc_info *)msg;
3800 struct i40e_pf *pf = vf->pf;
3801 struct i40e_link_status *ls = &pf->hw.phy.link_info;
3802 int i, adq_request_qps = 0;
3803 i40e_status aq_ret = 0;
3804 u64 speed = 0;
3805
3806 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3807 aq_ret = I40E_ERR_PARAM;
3808 goto err;
3809 }
3810
3811 /* ADq cannot be applied if spoof check is ON */
3812 if (vf->spoofchk) {
3813 dev_err(&pf->pdev->dev,
3814 "Spoof check is ON, turn it OFF to enable ADq\n");
3815 aq_ret = I40E_ERR_PARAM;
3816 goto err;
3817 }
3818
3819 if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ADQ)) {
3820 dev_err(&pf->pdev->dev,
3821 "VF %d attempting to enable ADq, but hasn't properly negotiated that capability\n",
3822 vf->vf_id);
3823 aq_ret = I40E_ERR_PARAM;
3824 goto err;
3825 }
3826
3827 /* max number of traffic classes for VF currently capped at 4 */
3828 if (!tci->num_tc || tci->num_tc > I40E_MAX_VF_VSI) {
3829 dev_err(&pf->pdev->dev,
3830 "VF %d trying to set %u TCs, valid range 1-%u TCs per VF\n",
3831 vf->vf_id, tci->num_tc, I40E_MAX_VF_VSI);
3832 aq_ret = I40E_ERR_PARAM;
3833 goto err;
3834 }
3835
3836 /* validate queues for each TC */
3837 for (i = 0; i < tci->num_tc; i++)
3838 if (!tci->list[i].count ||
3839 tci->list[i].count > I40E_DEFAULT_QUEUES_PER_VF) {
3840 dev_err(&pf->pdev->dev,
3841 "VF %d: TC %d trying to set %u queues, valid range 1-%u queues per TC\n",
3842 vf->vf_id, i, tci->list[i].count,
3843 I40E_DEFAULT_QUEUES_PER_VF);
3844 aq_ret = I40E_ERR_PARAM;
3845 goto err;
3846 }
3847
3848 /* need Max VF queues but already have default number of queues */
3849 adq_request_qps = I40E_MAX_VF_QUEUES - I40E_DEFAULT_QUEUES_PER_VF;
3850
3851 if (pf->queues_left < adq_request_qps) {
3852 dev_err(&pf->pdev->dev,
3853 "No queues left to allocate to VF %d\n",
3854 vf->vf_id);
3855 aq_ret = I40E_ERR_PARAM;
3856 goto err;
3857 } else {
3858 /* we need to allocate max VF queues to enable ADq so as to
3859 * make sure ADq enabled VF always gets back queues when it
3860 * goes through a reset.
3861 */
3862 vf->num_queue_pairs = I40E_MAX_VF_QUEUES;
3863 }
3864
3865 /* get link speed in MB to validate rate limit */
3866 switch (ls->link_speed) {
3867 case VIRTCHNL_LINK_SPEED_100MB:
3868 speed = SPEED_100;
3869 break;
3870 case VIRTCHNL_LINK_SPEED_1GB:
3871 speed = SPEED_1000;
3872 break;
3873 case VIRTCHNL_LINK_SPEED_10GB:
3874 speed = SPEED_10000;
3875 break;
3876 case VIRTCHNL_LINK_SPEED_20GB:
3877 speed = SPEED_20000;
3878 break;
3879 case VIRTCHNL_LINK_SPEED_25GB:
3880 speed = SPEED_25000;
3881 break;
3882 case VIRTCHNL_LINK_SPEED_40GB:
3883 speed = SPEED_40000;
3884 break;
3885 default:
3886 dev_err(&pf->pdev->dev,
3887 "Cannot detect link speed\n");
3888 aq_ret = I40E_ERR_PARAM;
3889 goto err;
3890 }
3891
3892 /* parse data from the queue channel info */
3893 vf->num_tc = tci->num_tc;
3894 for (i = 0; i < vf->num_tc; i++) {
3895 if (tci->list[i].max_tx_rate) {
3896 if (tci->list[i].max_tx_rate > speed) {
3897 dev_err(&pf->pdev->dev,
3898 "Invalid max tx rate %llu specified for VF %d.",
3899 tci->list[i].max_tx_rate,
3900 vf->vf_id);
3901 aq_ret = I40E_ERR_PARAM;
3902 goto err;
3903 } else {
3904 vf->ch[i].max_tx_rate =
3905 tci->list[i].max_tx_rate;
3906 }
3907 }
3908 vf->ch[i].num_qps = tci->list[i].count;
3909 }
3910
3911 /* set this flag only after making sure all inputs are sane */
3912 vf->adq_enabled = true;
3913
3914 /* reset the VF in order to allocate resources */
3915 i40e_vc_reset_vf(vf, true);
3916
3917 return I40E_SUCCESS;
3918
3919 /* send the response to the VF */
3920 err:
3921 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_CHANNELS,
3922 aq_ret);
3923 }
3924
3925 /**
3926 * i40e_vc_del_qch_msg
3927 * @vf: pointer to the VF info
3928 * @msg: pointer to the msg buffer
3929 **/
i40e_vc_del_qch_msg(struct i40e_vf * vf,u8 * msg)3930 static int i40e_vc_del_qch_msg(struct i40e_vf *vf, u8 *msg)
3931 {
3932 struct i40e_pf *pf = vf->pf;
3933 i40e_status aq_ret = 0;
3934
3935 if (!i40e_sync_vf_state(vf, I40E_VF_STATE_ACTIVE)) {
3936 aq_ret = I40E_ERR_PARAM;
3937 goto err;
3938 }
3939
3940 if (vf->adq_enabled) {
3941 i40e_del_all_cloud_filters(vf);
3942 i40e_del_qch(vf);
3943 vf->adq_enabled = false;
3944 vf->num_tc = 0;
3945 dev_info(&pf->pdev->dev,
3946 "Deleting Queue Channels and cloud filters for ADq on VF %d\n",
3947 vf->vf_id);
3948 } else {
3949 dev_info(&pf->pdev->dev, "VF %d trying to delete queue channels but ADq isn't enabled\n",
3950 vf->vf_id);
3951 aq_ret = I40E_ERR_PARAM;
3952 }
3953
3954 /* reset the VF in order to allocate resources */
3955 i40e_vc_reset_vf(vf, true);
3956
3957 return I40E_SUCCESS;
3958
3959 err:
3960 return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_DISABLE_CHANNELS,
3961 aq_ret);
3962 }
3963
3964 /**
3965 * i40e_vc_process_vf_msg
3966 * @pf: pointer to the PF structure
3967 * @vf_id: source VF id
3968 * @v_opcode: operation code
3969 * @v_retval: unused return value code
3970 * @msg: pointer to the msg buffer
3971 * @msglen: msg length
3972 *
3973 * called from the common aeq/arq handler to
3974 * process request from VF
3975 **/
i40e_vc_process_vf_msg(struct i40e_pf * pf,s16 vf_id,u32 v_opcode,u32 __always_unused v_retval,u8 * msg,u16 msglen)3976 int i40e_vc_process_vf_msg(struct i40e_pf *pf, s16 vf_id, u32 v_opcode,
3977 u32 __always_unused v_retval, u8 *msg, u16 msglen)
3978 {
3979 struct i40e_hw *hw = &pf->hw;
3980 int local_vf_id = vf_id - (s16)hw->func_caps.vf_base_id;
3981 struct i40e_vf *vf;
3982 int ret;
3983
3984 pf->vf_aq_requests++;
3985 if (local_vf_id < 0 || local_vf_id >= pf->num_alloc_vfs)
3986 return -EINVAL;
3987 vf = &(pf->vf[local_vf_id]);
3988
3989 /* Check if VF is disabled. */
3990 if (test_bit(I40E_VF_STATE_DISABLED, &vf->vf_states))
3991 return I40E_ERR_PARAM;
3992
3993 /* perform basic checks on the msg */
3994 ret = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
3995
3996 if (ret) {
3997 i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
3998 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
3999 local_vf_id, v_opcode, msglen);
4000 switch (ret) {
4001 case VIRTCHNL_STATUS_ERR_PARAM:
4002 return -EPERM;
4003 default:
4004 return -EINVAL;
4005 }
4006 }
4007
4008 switch (v_opcode) {
4009 case VIRTCHNL_OP_VERSION:
4010 ret = i40e_vc_get_version_msg(vf, msg);
4011 break;
4012 case VIRTCHNL_OP_GET_VF_RESOURCES:
4013 ret = i40e_vc_get_vf_resources_msg(vf, msg);
4014 i40e_vc_notify_vf_link_state(vf);
4015 break;
4016 case VIRTCHNL_OP_RESET_VF:
4017 i40e_vc_reset_vf(vf, false);
4018 ret = 0;
4019 break;
4020 case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
4021 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg);
4022 break;
4023 case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
4024 ret = i40e_vc_config_queues_msg(vf, msg);
4025 break;
4026 case VIRTCHNL_OP_CONFIG_IRQ_MAP:
4027 ret = i40e_vc_config_irq_map_msg(vf, msg);
4028 break;
4029 case VIRTCHNL_OP_ENABLE_QUEUES:
4030 ret = i40e_vc_enable_queues_msg(vf, msg);
4031 i40e_vc_notify_vf_link_state(vf);
4032 break;
4033 case VIRTCHNL_OP_DISABLE_QUEUES:
4034 ret = i40e_vc_disable_queues_msg(vf, msg);
4035 break;
4036 case VIRTCHNL_OP_ADD_ETH_ADDR:
4037 ret = i40e_vc_add_mac_addr_msg(vf, msg);
4038 break;
4039 case VIRTCHNL_OP_DEL_ETH_ADDR:
4040 ret = i40e_vc_del_mac_addr_msg(vf, msg);
4041 break;
4042 case VIRTCHNL_OP_ADD_VLAN:
4043 ret = i40e_vc_add_vlan_msg(vf, msg);
4044 break;
4045 case VIRTCHNL_OP_DEL_VLAN:
4046 ret = i40e_vc_remove_vlan_msg(vf, msg);
4047 break;
4048 case VIRTCHNL_OP_GET_STATS:
4049 ret = i40e_vc_get_stats_msg(vf, msg);
4050 break;
4051 case VIRTCHNL_OP_IWARP:
4052 ret = i40e_vc_iwarp_msg(vf, msg, msglen);
4053 break;
4054 case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
4055 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, true);
4056 break;
4057 case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
4058 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, false);
4059 break;
4060 case VIRTCHNL_OP_CONFIG_RSS_KEY:
4061 ret = i40e_vc_config_rss_key(vf, msg);
4062 break;
4063 case VIRTCHNL_OP_CONFIG_RSS_LUT:
4064 ret = i40e_vc_config_rss_lut(vf, msg);
4065 break;
4066 case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
4067 ret = i40e_vc_get_rss_hena(vf, msg);
4068 break;
4069 case VIRTCHNL_OP_SET_RSS_HENA:
4070 ret = i40e_vc_set_rss_hena(vf, msg);
4071 break;
4072 case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
4073 ret = i40e_vc_enable_vlan_stripping(vf, msg);
4074 break;
4075 case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
4076 ret = i40e_vc_disable_vlan_stripping(vf, msg);
4077 break;
4078 case VIRTCHNL_OP_REQUEST_QUEUES:
4079 ret = i40e_vc_request_queues_msg(vf, msg);
4080 break;
4081 case VIRTCHNL_OP_ENABLE_CHANNELS:
4082 ret = i40e_vc_add_qch_msg(vf, msg);
4083 break;
4084 case VIRTCHNL_OP_DISABLE_CHANNELS:
4085 ret = i40e_vc_del_qch_msg(vf, msg);
4086 break;
4087 case VIRTCHNL_OP_ADD_CLOUD_FILTER:
4088 ret = i40e_vc_add_cloud_filter(vf, msg);
4089 break;
4090 case VIRTCHNL_OP_DEL_CLOUD_FILTER:
4091 ret = i40e_vc_del_cloud_filter(vf, msg);
4092 break;
4093 case VIRTCHNL_OP_UNKNOWN:
4094 default:
4095 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
4096 v_opcode, local_vf_id);
4097 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
4098 I40E_ERR_NOT_IMPLEMENTED);
4099 break;
4100 }
4101
4102 return ret;
4103 }
4104
4105 /**
4106 * i40e_vc_process_vflr_event
4107 * @pf: pointer to the PF structure
4108 *
4109 * called from the vlfr irq handler to
4110 * free up VF resources and state variables
4111 **/
i40e_vc_process_vflr_event(struct i40e_pf * pf)4112 int i40e_vc_process_vflr_event(struct i40e_pf *pf)
4113 {
4114 struct i40e_hw *hw = &pf->hw;
4115 u32 reg, reg_idx, bit_idx;
4116 struct i40e_vf *vf;
4117 int vf_id;
4118
4119 if (!test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
4120 return 0;
4121
4122 /* Re-enable the VFLR interrupt cause here, before looking for which
4123 * VF got reset. Otherwise, if another VF gets a reset while the
4124 * first one is being processed, that interrupt will be lost, and
4125 * that VF will be stuck in reset forever.
4126 */
4127 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4128 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
4129 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4130 i40e_flush(hw);
4131
4132 clear_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4133 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
4134 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
4135 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
4136 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
4137 vf = &pf->vf[vf_id];
4138 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
4139 if (reg & BIT(bit_idx))
4140 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
4141 i40e_reset_vf(vf, true);
4142 }
4143
4144 return 0;
4145 }
4146
4147 /**
4148 * i40e_validate_vf
4149 * @pf: the physical function
4150 * @vf_id: VF identifier
4151 *
4152 * Check that the VF is enabled and the VSI exists.
4153 *
4154 * Returns 0 on success, negative on failure
4155 **/
i40e_validate_vf(struct i40e_pf * pf,int vf_id)4156 static int i40e_validate_vf(struct i40e_pf *pf, int vf_id)
4157 {
4158 struct i40e_vsi *vsi;
4159 struct i40e_vf *vf;
4160 int ret = 0;
4161
4162 if (vf_id >= pf->num_alloc_vfs) {
4163 dev_err(&pf->pdev->dev,
4164 "Invalid VF Identifier %d\n", vf_id);
4165 ret = -EINVAL;
4166 goto err_out;
4167 }
4168 vf = &pf->vf[vf_id];
4169 vsi = i40e_find_vsi_from_id(pf, vf->lan_vsi_id);
4170 if (!vsi)
4171 ret = -EINVAL;
4172 err_out:
4173 return ret;
4174 }
4175
4176 /**
4177 * i40e_ndo_set_vf_mac
4178 * @netdev: network interface device structure
4179 * @vf_id: VF identifier
4180 * @mac: mac address
4181 *
4182 * program VF mac address
4183 **/
i40e_ndo_set_vf_mac(struct net_device * netdev,int vf_id,u8 * mac)4184 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
4185 {
4186 struct i40e_netdev_priv *np = netdev_priv(netdev);
4187 struct i40e_vsi *vsi = np->vsi;
4188 struct i40e_pf *pf = vsi->back;
4189 struct i40e_mac_filter *f;
4190 struct i40e_vf *vf;
4191 int ret = 0;
4192 struct hlist_node *h;
4193 int bkt;
4194 u8 i;
4195
4196 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4197 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4198 return -EAGAIN;
4199 }
4200
4201 /* validate the request */
4202 ret = i40e_validate_vf(pf, vf_id);
4203 if (ret)
4204 goto error_param;
4205
4206 vf = &pf->vf[vf_id];
4207
4208 /* When the VF is resetting wait until it is done.
4209 * It can take up to 200 milliseconds,
4210 * but wait for up to 300 milliseconds to be safe.
4211 * Acquire the VSI pointer only after the VF has been
4212 * properly initialized.
4213 */
4214 for (i = 0; i < 15; i++) {
4215 if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
4216 break;
4217 msleep(20);
4218 }
4219 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4220 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4221 vf_id);
4222 ret = -EAGAIN;
4223 goto error_param;
4224 }
4225 vsi = pf->vsi[vf->lan_vsi_idx];
4226
4227 if (is_multicast_ether_addr(mac)) {
4228 dev_err(&pf->pdev->dev,
4229 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
4230 ret = -EINVAL;
4231 goto error_param;
4232 }
4233
4234 /* Lock once because below invoked function add/del_filter requires
4235 * mac_filter_hash_lock to be held
4236 */
4237 spin_lock_bh(&vsi->mac_filter_hash_lock);
4238
4239 /* delete the temporary mac address */
4240 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
4241 i40e_del_mac_filter(vsi, vf->default_lan_addr.addr);
4242
4243 /* Delete all the filters for this VSI - we're going to kill it
4244 * anyway.
4245 */
4246 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
4247 __i40e_del_filter(vsi, f);
4248
4249 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4250
4251 /* program mac filter */
4252 if (i40e_sync_vsi_filters(vsi)) {
4253 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
4254 ret = -EIO;
4255 goto error_param;
4256 }
4257 ether_addr_copy(vf->default_lan_addr.addr, mac);
4258
4259 if (is_zero_ether_addr(mac)) {
4260 vf->pf_set_mac = false;
4261 dev_info(&pf->pdev->dev, "Removing MAC on VF %d\n", vf_id);
4262 } else {
4263 vf->pf_set_mac = true;
4264 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n",
4265 mac, vf_id);
4266 }
4267
4268 /* Force the VF interface down so it has to bring up with new MAC
4269 * address
4270 */
4271 i40e_vc_reset_vf(vf, true);
4272 dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
4273
4274 error_param:
4275 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4276 return ret;
4277 }
4278
4279 /**
4280 * i40e_ndo_set_vf_port_vlan
4281 * @netdev: network interface device structure
4282 * @vf_id: VF identifier
4283 * @vlan_id: mac address
4284 * @qos: priority setting
4285 * @vlan_proto: vlan protocol
4286 *
4287 * program VF vlan id and/or qos
4288 **/
i40e_ndo_set_vf_port_vlan(struct net_device * netdev,int vf_id,u16 vlan_id,u8 qos,__be16 vlan_proto)4289 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev, int vf_id,
4290 u16 vlan_id, u8 qos, __be16 vlan_proto)
4291 {
4292 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
4293 struct i40e_netdev_priv *np = netdev_priv(netdev);
4294 bool allmulti = false, alluni = false;
4295 struct i40e_pf *pf = np->vsi->back;
4296 struct i40e_vsi *vsi;
4297 struct i40e_vf *vf;
4298 int ret = 0;
4299
4300 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4301 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4302 return -EAGAIN;
4303 }
4304
4305 /* validate the request */
4306 ret = i40e_validate_vf(pf, vf_id);
4307 if (ret)
4308 goto error_pvid;
4309
4310 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
4311 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
4312 ret = -EINVAL;
4313 goto error_pvid;
4314 }
4315
4316 if (vlan_proto != htons(ETH_P_8021Q)) {
4317 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
4318 ret = -EPROTONOSUPPORT;
4319 goto error_pvid;
4320 }
4321
4322 vf = &pf->vf[vf_id];
4323 vsi = pf->vsi[vf->lan_vsi_idx];
4324 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4325 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4326 vf_id);
4327 ret = -EAGAIN;
4328 goto error_pvid;
4329 }
4330
4331 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
4332 /* duplicate request, so just return success */
4333 goto error_pvid;
4334
4335 i40e_vc_reset_vf(vf, true);
4336 /* During reset the VF got a new VSI, so refresh a pointer. */
4337 vsi = pf->vsi[vf->lan_vsi_idx];
4338 /* Locked once because multiple functions below iterate list */
4339 spin_lock_bh(&vsi->mac_filter_hash_lock);
4340
4341 /* Check for condition where there was already a port VLAN ID
4342 * filter set and now it is being deleted by setting it to zero.
4343 * Additionally check for the condition where there was a port
4344 * VLAN but now there is a new and different port VLAN being set.
4345 * Before deleting all the old VLAN filters we must add new ones
4346 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
4347 * MAC addresses deleted.
4348 */
4349 if ((!(vlan_id || qos) ||
4350 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
4351 vsi->info.pvid) {
4352 ret = i40e_add_vlan_all_mac(vsi, I40E_VLAN_ANY);
4353 if (ret) {
4354 dev_info(&vsi->back->pdev->dev,
4355 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4356 vsi->back->hw.aq.asq_last_status);
4357 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4358 goto error_pvid;
4359 }
4360 }
4361
4362 if (vsi->info.pvid) {
4363 /* remove all filters on the old VLAN */
4364 i40e_rm_vlan_all_mac(vsi, (le16_to_cpu(vsi->info.pvid) &
4365 VLAN_VID_MASK));
4366 }
4367
4368 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4369
4370 /* disable promisc modes in case they were enabled */
4371 ret = i40e_config_vf_promiscuous_mode(vf, vf->lan_vsi_id,
4372 allmulti, alluni);
4373 if (ret) {
4374 dev_err(&pf->pdev->dev, "Unable to config VF promiscuous mode\n");
4375 goto error_pvid;
4376 }
4377
4378 if (vlan_id || qos)
4379 ret = i40e_vsi_add_pvid(vsi, vlanprio);
4380 else
4381 i40e_vsi_remove_pvid(vsi);
4382 spin_lock_bh(&vsi->mac_filter_hash_lock);
4383
4384 if (vlan_id) {
4385 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
4386 vlan_id, qos, vf_id);
4387
4388 /* add new VLAN filter for each MAC */
4389 ret = i40e_add_vlan_all_mac(vsi, vlan_id);
4390 if (ret) {
4391 dev_info(&vsi->back->pdev->dev,
4392 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
4393 vsi->back->hw.aq.asq_last_status);
4394 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4395 goto error_pvid;
4396 }
4397
4398 /* remove the previously added non-VLAN MAC filters */
4399 i40e_rm_vlan_all_mac(vsi, I40E_VLAN_ANY);
4400 }
4401
4402 spin_unlock_bh(&vsi->mac_filter_hash_lock);
4403
4404 if (test_bit(I40E_VF_STATE_UC_PROMISC, &vf->vf_states))
4405 alluni = true;
4406
4407 if (test_bit(I40E_VF_STATE_MC_PROMISC, &vf->vf_states))
4408 allmulti = true;
4409
4410 /* Schedule the worker thread to take care of applying changes */
4411 i40e_service_event_schedule(vsi->back);
4412
4413 if (ret) {
4414 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
4415 goto error_pvid;
4416 }
4417
4418 /* The Port VLAN needs to be saved across resets the same as the
4419 * default LAN MAC address.
4420 */
4421 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
4422
4423 ret = i40e_config_vf_promiscuous_mode(vf, vsi->id, allmulti, alluni);
4424 if (ret) {
4425 dev_err(&pf->pdev->dev, "Unable to config vf promiscuous mode\n");
4426 goto error_pvid;
4427 }
4428
4429 ret = 0;
4430
4431 error_pvid:
4432 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4433 return ret;
4434 }
4435
4436 /**
4437 * i40e_ndo_set_vf_bw
4438 * @netdev: network interface device structure
4439 * @vf_id: VF identifier
4440 * @min_tx_rate: Minimum Tx rate
4441 * @max_tx_rate: Maximum Tx rate
4442 *
4443 * configure VF Tx rate
4444 **/
i40e_ndo_set_vf_bw(struct net_device * netdev,int vf_id,int min_tx_rate,int max_tx_rate)4445 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
4446 int max_tx_rate)
4447 {
4448 struct i40e_netdev_priv *np = netdev_priv(netdev);
4449 struct i40e_pf *pf = np->vsi->back;
4450 struct i40e_vsi *vsi;
4451 struct i40e_vf *vf;
4452 int ret = 0;
4453
4454 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4455 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4456 return -EAGAIN;
4457 }
4458
4459 /* validate the request */
4460 ret = i40e_validate_vf(pf, vf_id);
4461 if (ret)
4462 goto error;
4463
4464 if (min_tx_rate) {
4465 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
4466 min_tx_rate, vf_id);
4467 ret = -EINVAL;
4468 goto error;
4469 }
4470
4471 vf = &pf->vf[vf_id];
4472 vsi = pf->vsi[vf->lan_vsi_idx];
4473 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4474 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4475 vf_id);
4476 ret = -EAGAIN;
4477 goto error;
4478 }
4479
4480 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
4481 if (ret)
4482 goto error;
4483
4484 vf->tx_rate = max_tx_rate;
4485 error:
4486 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4487 return ret;
4488 }
4489
4490 /**
4491 * i40e_ndo_get_vf_config
4492 * @netdev: network interface device structure
4493 * @vf_id: VF identifier
4494 * @ivi: VF configuration structure
4495 *
4496 * return VF configuration
4497 **/
i40e_ndo_get_vf_config(struct net_device * netdev,int vf_id,struct ifla_vf_info * ivi)4498 int i40e_ndo_get_vf_config(struct net_device *netdev,
4499 int vf_id, struct ifla_vf_info *ivi)
4500 {
4501 struct i40e_netdev_priv *np = netdev_priv(netdev);
4502 struct i40e_vsi *vsi = np->vsi;
4503 struct i40e_pf *pf = vsi->back;
4504 struct i40e_vf *vf;
4505 int ret = 0;
4506
4507 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4508 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4509 return -EAGAIN;
4510 }
4511
4512 /* validate the request */
4513 ret = i40e_validate_vf(pf, vf_id);
4514 if (ret)
4515 goto error_param;
4516
4517 vf = &pf->vf[vf_id];
4518 /* first vsi is always the LAN vsi */
4519 vsi = pf->vsi[vf->lan_vsi_idx];
4520 if (!vsi) {
4521 ret = -ENOENT;
4522 goto error_param;
4523 }
4524
4525 ivi->vf = vf_id;
4526
4527 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
4528
4529 ivi->max_tx_rate = vf->tx_rate;
4530 ivi->min_tx_rate = 0;
4531 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
4532 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
4533 I40E_VLAN_PRIORITY_SHIFT;
4534 if (vf->link_forced == false)
4535 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
4536 else if (vf->link_up == true)
4537 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
4538 else
4539 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
4540 ivi->spoofchk = vf->spoofchk;
4541 ivi->trusted = vf->trusted;
4542 ret = 0;
4543
4544 error_param:
4545 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4546 return ret;
4547 }
4548
4549 /**
4550 * i40e_ndo_set_vf_link_state
4551 * @netdev: network interface device structure
4552 * @vf_id: VF identifier
4553 * @link: required link state
4554 *
4555 * Set the link state of a specified VF, regardless of physical link state
4556 **/
i40e_ndo_set_vf_link_state(struct net_device * netdev,int vf_id,int link)4557 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
4558 {
4559 struct i40e_netdev_priv *np = netdev_priv(netdev);
4560 struct i40e_pf *pf = np->vsi->back;
4561 struct virtchnl_pf_event pfe;
4562 struct i40e_hw *hw = &pf->hw;
4563 struct i40e_vf *vf;
4564 int abs_vf_id;
4565 int ret = 0;
4566
4567 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4568 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4569 return -EAGAIN;
4570 }
4571
4572 /* validate the request */
4573 if (vf_id >= pf->num_alloc_vfs) {
4574 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4575 ret = -EINVAL;
4576 goto error_out;
4577 }
4578
4579 vf = &pf->vf[vf_id];
4580 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
4581
4582 pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
4583 pfe.severity = PF_EVENT_SEVERITY_INFO;
4584
4585 switch (link) {
4586 case IFLA_VF_LINK_STATE_AUTO:
4587 vf->link_forced = false;
4588 pfe.event_data.link_event.link_status =
4589 pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
4590 pfe.event_data.link_event.link_speed =
4591 (enum virtchnl_link_speed)
4592 pf->hw.phy.link_info.link_speed;
4593 break;
4594 case IFLA_VF_LINK_STATE_ENABLE:
4595 vf->link_forced = true;
4596 vf->link_up = true;
4597 pfe.event_data.link_event.link_status = true;
4598 pfe.event_data.link_event.link_speed = VIRTCHNL_LINK_SPEED_40GB;
4599 break;
4600 case IFLA_VF_LINK_STATE_DISABLE:
4601 vf->link_forced = true;
4602 vf->link_up = false;
4603 pfe.event_data.link_event.link_status = false;
4604 pfe.event_data.link_event.link_speed = 0;
4605 break;
4606 default:
4607 ret = -EINVAL;
4608 goto error_out;
4609 }
4610 /* Notify the VF of its new link state */
4611 i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
4612 0, (u8 *)&pfe, sizeof(pfe), NULL);
4613
4614 error_out:
4615 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4616 return ret;
4617 }
4618
4619 /**
4620 * i40e_ndo_set_vf_spoofchk
4621 * @netdev: network interface device structure
4622 * @vf_id: VF identifier
4623 * @enable: flag to enable or disable feature
4624 *
4625 * Enable or disable VF spoof checking
4626 **/
i40e_ndo_set_vf_spoofchk(struct net_device * netdev,int vf_id,bool enable)4627 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
4628 {
4629 struct i40e_netdev_priv *np = netdev_priv(netdev);
4630 struct i40e_vsi *vsi = np->vsi;
4631 struct i40e_pf *pf = vsi->back;
4632 struct i40e_vsi_context ctxt;
4633 struct i40e_hw *hw = &pf->hw;
4634 struct i40e_vf *vf;
4635 int ret = 0;
4636
4637 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4638 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4639 return -EAGAIN;
4640 }
4641
4642 /* validate the request */
4643 if (vf_id >= pf->num_alloc_vfs) {
4644 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4645 ret = -EINVAL;
4646 goto out;
4647 }
4648
4649 vf = &(pf->vf[vf_id]);
4650 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4651 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
4652 vf_id);
4653 ret = -EAGAIN;
4654 goto out;
4655 }
4656
4657 if (enable == vf->spoofchk)
4658 goto out;
4659
4660 vf->spoofchk = enable;
4661 memset(&ctxt, 0, sizeof(ctxt));
4662 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
4663 ctxt.pf_num = pf->hw.pf_id;
4664 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
4665 if (enable)
4666 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
4667 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
4668 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
4669 if (ret) {
4670 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
4671 ret);
4672 ret = -EIO;
4673 }
4674 out:
4675 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4676 return ret;
4677 }
4678
4679 /**
4680 * i40e_ndo_set_vf_trust
4681 * @netdev: network interface device structure of the pf
4682 * @vf_id: VF identifier
4683 * @setting: trust setting
4684 *
4685 * Enable or disable VF trust setting
4686 **/
i40e_ndo_set_vf_trust(struct net_device * netdev,int vf_id,bool setting)4687 int i40e_ndo_set_vf_trust(struct net_device *netdev, int vf_id, bool setting)
4688 {
4689 struct i40e_netdev_priv *np = netdev_priv(netdev);
4690 struct i40e_pf *pf = np->vsi->back;
4691 struct i40e_vf *vf;
4692 int ret = 0;
4693
4694 if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
4695 dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
4696 return -EAGAIN;
4697 }
4698
4699 /* validate the request */
4700 if (vf_id >= pf->num_alloc_vfs) {
4701 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
4702 ret = -EINVAL;
4703 goto out;
4704 }
4705
4706 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4707 dev_err(&pf->pdev->dev, "Trusted VF not supported in MFP mode.\n");
4708 ret = -EINVAL;
4709 goto out;
4710 }
4711
4712 vf = &pf->vf[vf_id];
4713
4714 if (setting == vf->trusted)
4715 goto out;
4716
4717 vf->trusted = setting;
4718 i40e_vc_reset_vf(vf, true);
4719 dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
4720 vf_id, setting ? "" : "un");
4721
4722 if (vf->adq_enabled) {
4723 if (!vf->trusted) {
4724 dev_info(&pf->pdev->dev,
4725 "VF %u no longer Trusted, deleting all cloud filters\n",
4726 vf_id);
4727 i40e_del_all_cloud_filters(vf);
4728 }
4729 }
4730
4731 out:
4732 clear_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state);
4733 return ret;
4734 }
4735
4736 /**
4737 * i40e_get_vf_stats - populate some stats for the VF
4738 * @netdev: the netdev of the PF
4739 * @vf_id: the host OS identifier (0-127)
4740 * @vf_stats: pointer to the OS memory to be initialized
4741 */
i40e_get_vf_stats(struct net_device * netdev,int vf_id,struct ifla_vf_stats * vf_stats)4742 int i40e_get_vf_stats(struct net_device *netdev, int vf_id,
4743 struct ifla_vf_stats *vf_stats)
4744 {
4745 struct i40e_netdev_priv *np = netdev_priv(netdev);
4746 struct i40e_pf *pf = np->vsi->back;
4747 struct i40e_eth_stats *stats;
4748 struct i40e_vsi *vsi;
4749 struct i40e_vf *vf;
4750
4751 /* validate the request */
4752 if (i40e_validate_vf(pf, vf_id))
4753 return -EINVAL;
4754
4755 vf = &pf->vf[vf_id];
4756 if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
4757 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
4758 return -EBUSY;
4759 }
4760
4761 vsi = pf->vsi[vf->lan_vsi_idx];
4762 if (!vsi)
4763 return -EINVAL;
4764
4765 i40e_update_eth_stats(vsi);
4766 stats = &vsi->eth_stats;
4767
4768 memset(vf_stats, 0, sizeof(*vf_stats));
4769
4770 vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast +
4771 stats->rx_multicast;
4772 vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast +
4773 stats->tx_multicast;
4774 vf_stats->rx_bytes = stats->rx_bytes;
4775 vf_stats->tx_bytes = stats->tx_bytes;
4776 vf_stats->broadcast = stats->rx_broadcast;
4777 vf_stats->multicast = stats->rx_multicast;
4778 vf_stats->rx_dropped = stats->rx_discards;
4779 vf_stats->tx_dropped = stats->tx_discards;
4780
4781 return 0;
4782 }
4783