1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Authors:
5*4882a593Smuzhiyun * Alexander Aring <aar@pengutronix.de>
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Based on: net/mac80211/util.c
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include "ieee802154_i.h"
11*4882a593Smuzhiyun #include "driver-ops.h"
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun /* privid for wpan_phys to determine whether they belong to us or not */
14*4882a593Smuzhiyun const void *const mac802154_wpan_phy_privid = &mac802154_wpan_phy_privid;
15*4882a593Smuzhiyun
ieee802154_wake_queue(struct ieee802154_hw * hw)16*4882a593Smuzhiyun void ieee802154_wake_queue(struct ieee802154_hw *hw)
17*4882a593Smuzhiyun {
18*4882a593Smuzhiyun struct ieee802154_local *local = hw_to_local(hw);
19*4882a593Smuzhiyun struct ieee802154_sub_if_data *sdata;
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun rcu_read_lock();
22*4882a593Smuzhiyun list_for_each_entry_rcu(sdata, &local->interfaces, list) {
23*4882a593Smuzhiyun if (!sdata->dev)
24*4882a593Smuzhiyun continue;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun netif_wake_queue(sdata->dev);
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun rcu_read_unlock();
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun EXPORT_SYMBOL(ieee802154_wake_queue);
31*4882a593Smuzhiyun
ieee802154_stop_queue(struct ieee802154_hw * hw)32*4882a593Smuzhiyun void ieee802154_stop_queue(struct ieee802154_hw *hw)
33*4882a593Smuzhiyun {
34*4882a593Smuzhiyun struct ieee802154_local *local = hw_to_local(hw);
35*4882a593Smuzhiyun struct ieee802154_sub_if_data *sdata;
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun rcu_read_lock();
38*4882a593Smuzhiyun list_for_each_entry_rcu(sdata, &local->interfaces, list) {
39*4882a593Smuzhiyun if (!sdata->dev)
40*4882a593Smuzhiyun continue;
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun netif_stop_queue(sdata->dev);
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun rcu_read_unlock();
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun EXPORT_SYMBOL(ieee802154_stop_queue);
47*4882a593Smuzhiyun
ieee802154_xmit_ifs_timer(struct hrtimer * timer)48*4882a593Smuzhiyun enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun struct ieee802154_local *local =
51*4882a593Smuzhiyun container_of(timer, struct ieee802154_local, ifs_timer);
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun ieee802154_wake_queue(&local->hw);
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun return HRTIMER_NORESTART;
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun
ieee802154_xmit_complete(struct ieee802154_hw * hw,struct sk_buff * skb,bool ifs_handling)58*4882a593Smuzhiyun void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb,
59*4882a593Smuzhiyun bool ifs_handling)
60*4882a593Smuzhiyun {
61*4882a593Smuzhiyun if (ifs_handling) {
62*4882a593Smuzhiyun struct ieee802154_local *local = hw_to_local(hw);
63*4882a593Smuzhiyun u8 max_sifs_size;
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun /* If transceiver sets CRC on his own we need to use lifs
66*4882a593Smuzhiyun * threshold len above 16 otherwise 18, because it's not
67*4882a593Smuzhiyun * part of skb->len.
68*4882a593Smuzhiyun */
69*4882a593Smuzhiyun if (hw->flags & IEEE802154_HW_TX_OMIT_CKSUM)
70*4882a593Smuzhiyun max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE -
71*4882a593Smuzhiyun IEEE802154_FCS_LEN;
72*4882a593Smuzhiyun else
73*4882a593Smuzhiyun max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE;
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun if (skb->len > max_sifs_size)
76*4882a593Smuzhiyun hrtimer_start(&local->ifs_timer,
77*4882a593Smuzhiyun hw->phy->lifs_period * NSEC_PER_USEC,
78*4882a593Smuzhiyun HRTIMER_MODE_REL);
79*4882a593Smuzhiyun else
80*4882a593Smuzhiyun hrtimer_start(&local->ifs_timer,
81*4882a593Smuzhiyun hw->phy->sifs_period * NSEC_PER_USEC,
82*4882a593Smuzhiyun HRTIMER_MODE_REL);
83*4882a593Smuzhiyun } else {
84*4882a593Smuzhiyun ieee802154_wake_queue(hw);
85*4882a593Smuzhiyun }
86*4882a593Smuzhiyun
87*4882a593Smuzhiyun dev_consume_skb_any(skb);
88*4882a593Smuzhiyun }
89*4882a593Smuzhiyun EXPORT_SYMBOL(ieee802154_xmit_complete);
90*4882a593Smuzhiyun
ieee802154_stop_device(struct ieee802154_local * local)91*4882a593Smuzhiyun void ieee802154_stop_device(struct ieee802154_local *local)
92*4882a593Smuzhiyun {
93*4882a593Smuzhiyun flush_workqueue(local->workqueue);
94*4882a593Smuzhiyun hrtimer_cancel(&local->ifs_timer);
95*4882a593Smuzhiyun drv_stop(local);
96*4882a593Smuzhiyun }
97