1 #include <net/mac80211.h>
2 #include <net/rtnetlink.h>
4 #include "ieee80211_i.h"
6 #include "driver-ops.h"
9 /* return value indicates whether the driver should be further notified */
10 static bool ieee80211_quiesce(struct ieee80211_sub_if_data *sdata)
12 switch (sdata->vif.type) {
13 case NL80211_IFTYPE_STATION:
14 ieee80211_sta_quiesce(sdata);
16 case NL80211_IFTYPE_ADHOC:
17 ieee80211_ibss_quiesce(sdata);
19 case NL80211_IFTYPE_MESH_POINT:
20 ieee80211_mesh_quiesce(sdata);
22 case NL80211_IFTYPE_AP_VLAN:
23 case NL80211_IFTYPE_MONITOR:
24 /* don't tell driver about this */
31 int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
33 struct ieee80211_local *local = hw_to_local(hw);
34 struct ieee80211_sub_if_data *sdata;
37 ieee80211_scan_cancel(local);
39 if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
40 mutex_lock(&local->sta_mtx);
41 list_for_each_entry(sta, &local->sta_list, list) {
42 set_sta_flags(sta, WLAN_STA_BLOCK_BA);
43 ieee80211_sta_tear_down_BA_sessions(sta, true);
45 mutex_unlock(&local->sta_mtx);
48 ieee80211_stop_queues_by_reason(hw,
49 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
51 /* flush out all packets */
54 drv_flush(local, false);
56 local->quiescing = true;
57 /* make quiescing visible to timers everywhere */
60 flush_workqueue(local->workqueue);
62 /* Don't try to run timers while suspended. */
63 del_timer_sync(&local->sta_cleanup);
66 * Note that this particular timer doesn't need to be
67 * restarted at resume.
69 cancel_work_sync(&local->dynamic_ps_enable_work);
70 del_timer_sync(&local->dynamic_ps_timer);
72 local->wowlan = wowlan && local->open_count;
74 int err = drv_suspend(local, wowlan);
76 local->quiescing = false;
80 local->wowlan = false;
82 list_for_each_entry(sdata, &local->interfaces, list) {
83 cancel_work_sync(&sdata->work);
84 ieee80211_quiesce(sdata);
91 list_for_each_entry(sdata, &local->interfaces, list)
92 ieee80211_disable_keys(sdata);
94 /* tear down aggregation sessions and remove STAs */
95 mutex_lock(&local->sta_mtx);
96 list_for_each_entry(sta, &local->sta_list, list) {
99 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
100 sdata = container_of(sdata->bss,
101 struct ieee80211_sub_if_data,
104 drv_sta_remove(local, sdata, &sta->sta);
107 mesh_plink_quiesce(sta);
109 mutex_unlock(&local->sta_mtx);
111 /* remove all interfaces */
112 list_for_each_entry(sdata, &local->interfaces, list) {
113 cancel_work_sync(&sdata->work);
115 if (!ieee80211_quiesce(sdata))
118 if (!ieee80211_sdata_running(sdata))
121 /* disable beaconing */
122 ieee80211_bss_info_change_notify(sdata,
123 BSS_CHANGED_BEACON_ENABLED);
125 drv_remove_interface(local, &sdata->vif);
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.