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 ieee80211_roc_purge(local, NULL);
24 ieee80211_del_virtual_monitor(local);
26 if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
27 mutex_lock(&local->sta_mtx);
28 list_for_each_entry(sta, &local->sta_list, list) {
29 set_sta_flag(sta, WLAN_STA_BLOCK_BA);
30 ieee80211_sta_tear_down_BA_sessions(
31 sta, AGG_STOP_LOCAL_REQUEST);
33 mutex_unlock(&local->sta_mtx);
36 ieee80211_stop_queues_by_reason(hw,
37 IEEE80211_MAX_QUEUE_MAP,
38 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
41 /* flush out all packets */
44 ieee80211_flush_queues(local, NULL);
46 local->quiescing = true;
47 /* make quiescing visible to timers everywhere */
50 flush_workqueue(local->workqueue);
52 /* Don't try to run timers while suspended. */
53 del_timer_sync(&local->sta_cleanup);
56 * Note that this particular timer doesn't need to be
57 * restarted at resume.
59 cancel_work_sync(&local->dynamic_ps_enable_work);
60 del_timer_sync(&local->dynamic_ps_timer);
62 local->wowlan = wowlan && local->open_count;
64 int err = drv_suspend(local, wowlan);
66 local->quiescing = false;
67 local->wowlan = false;
68 if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
69 mutex_lock(&local->sta_mtx);
70 list_for_each_entry(sta,
71 &local->sta_list, list) {
72 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
74 mutex_unlock(&local->sta_mtx);
76 ieee80211_wake_queues_by_reason(hw,
77 IEEE80211_MAX_QUEUE_MAP,
78 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
89 /* remove all interfaces that were created in the driver */
90 list_for_each_entry(sdata, &local->interfaces, list) {
91 if (!ieee80211_sdata_running(sdata))
93 switch (sdata->vif.type) {
94 case NL80211_IFTYPE_AP_VLAN:
95 case NL80211_IFTYPE_MONITOR:
97 case NL80211_IFTYPE_STATION:
98 ieee80211_mgd_quiesce(sdata);
100 case NL80211_IFTYPE_WDS:
101 /* tear down aggregation sessions and remove STAs */
102 mutex_lock(&local->sta_mtx);
103 sta = sdata->u.wds.sta;
104 if (sta && sta->uploaded) {
105 enum ieee80211_sta_state state;
107 state = sta->sta_state;
108 for (; state > IEEE80211_STA_NOTEXIST; state--)
109 WARN_ON(drv_sta_state(local, sta->sdata,
113 mutex_unlock(&local->sta_mtx);
119 drv_remove_interface(local, sdata);
123 * We disconnected on all interfaces before suspend, all channel
124 * contexts should be released.
126 WARN_ON(!list_empty(&local->chanctx_list));
128 /* stop hardware - this must stop RX */
129 if (local->open_count)
130 ieee80211_stop_device(local);
133 local->suspended = true;
134 /* need suspended to be visible before quiescing is false */
136 local->quiescing = false;
142 * __ieee80211_resume() is a static inline which just calls
143 * ieee80211_reconfig(), which is also needed for hardware
144 * hang/firmware failure/etc. recovery.
147 void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif,
148 struct cfg80211_wowlan_wakeup *wakeup,
151 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
153 cfg80211_report_wowlan_wakeup(&sdata->wdev, wakeup, gfp);
155 EXPORT_SYMBOL(ieee80211_report_wowlan_wakeup);