1 #include <net/mac80211.h>
2 #include <net/rtnetlink.h>
4 #include "ieee80211_i.h"
6 #include "driver-ops.h"
9 int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
11 struct ieee80211_local *local = hw_to_local(hw);
12 struct ieee80211_sub_if_data *sdata;
15 if (!local->open_count)
18 ieee80211_scan_cancel(local);
20 ieee80211_dfs_cac_cancel(local);
22 if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
23 mutex_lock(&local->sta_mtx);
24 list_for_each_entry(sta, &local->sta_list, list) {
25 set_sta_flag(sta, WLAN_STA_BLOCK_BA);
26 ieee80211_sta_tear_down_BA_sessions(
27 sta, AGG_STOP_LOCAL_REQUEST);
29 mutex_unlock(&local->sta_mtx);
32 ieee80211_stop_queues_by_reason(hw,
33 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
35 /* flush out all packets */
38 drv_flush(local, false);
40 local->quiescing = true;
41 /* make quiescing visible to timers everywhere */
44 flush_workqueue(local->workqueue);
46 /* Don't try to run timers while suspended. */
47 del_timer_sync(&local->sta_cleanup);
50 * Note that this particular timer doesn't need to be
51 * restarted at resume.
53 cancel_work_sync(&local->dynamic_ps_enable_work);
54 del_timer_sync(&local->dynamic_ps_timer);
56 local->wowlan = wowlan && local->open_count;
58 int err = drv_suspend(local, wowlan);
60 local->quiescing = false;
61 local->wowlan = false;
62 if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
63 mutex_lock(&local->sta_mtx);
64 list_for_each_entry(sta,
65 &local->sta_list, list) {
66 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
68 mutex_unlock(&local->sta_mtx);
70 ieee80211_wake_queues_by_reason(hw,
71 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
81 /* tear down aggregation sessions and remove STAs */
82 mutex_lock(&local->sta_mtx);
83 list_for_each_entry(sta, &local->sta_list, list) {
85 enum ieee80211_sta_state state;
87 state = sta->sta_state;
88 for (; state > IEEE80211_STA_NOTEXIST; state--)
89 WARN_ON(drv_sta_state(local, sta->sdata, sta,
93 mutex_unlock(&local->sta_mtx);
95 /* remove all interfaces */
96 list_for_each_entry(sdata, &local->interfaces, list) {
97 if (!ieee80211_sdata_running(sdata))
99 drv_remove_interface(local, sdata);
102 sdata = rtnl_dereference(local->monitor_sdata);
104 drv_remove_interface(local, sdata);
107 * We disconnected on all interfaces before suspend, all channel
108 * contexts should be released.
110 WARN_ON(!list_empty(&local->chanctx_list));
112 /* stop hardware - this must stop RX */
113 if (local->open_count)
114 ieee80211_stop_device(local);
117 local->suspended = true;
118 /* need suspended to be visible before quiescing is false */
120 local->quiescing = false;
126 * __ieee80211_resume() is a static inline which just calls
127 * ieee80211_reconfig(), which is also needed for hardware
128 * hang/firmware failure/etc. recovery.
131 void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif,
132 struct cfg80211_wowlan_wakeup *wakeup,
135 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
137 cfg80211_report_wowlan_wakeup(&sdata->wdev, wakeup, gfp);
139 EXPORT_SYMBOL(ieee80211_report_wowlan_wakeup);