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)
11 struct ieee80211_local *local = hw_to_local(hw);
12 struct ieee80211_sub_if_data *sdata;
15 if (unlikely(test_bit(SCAN_SW_SCANNING, &local->scanning)))
16 ieee80211_scan_cancel(local);
18 ieee80211_stop_queues_by_reason(hw,
19 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
21 /* flush out all packets */
24 local->quiescing = true;
25 /* make quiescing visible to timers everywhere */
28 flush_workqueue(local->workqueue);
30 /* Don't try to run timers while suspended. */
31 del_timer_sync(&local->sta_cleanup);
34 * Note that this particular timer doesn't need to be
35 * restarted at resume.
37 cancel_work_sync(&local->dynamic_ps_enable_work);
38 del_timer_sync(&local->dynamic_ps_timer);
41 list_for_each_entry(sdata, &local->interfaces, list)
42 ieee80211_disable_keys(sdata);
44 /* tear down aggregation sessions and remove STAs */
45 mutex_lock(&local->sta_mtx);
46 list_for_each_entry(sta, &local->sta_list, list) {
47 if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
48 set_sta_flags(sta, WLAN_STA_BLOCK_BA);
49 ieee80211_sta_tear_down_BA_sessions(sta);
54 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
55 sdata = container_of(sdata->bss,
56 struct ieee80211_sub_if_data,
59 drv_sta_remove(local, sdata, &sta->sta);
62 mesh_plink_quiesce(sta);
64 mutex_unlock(&local->sta_mtx);
66 /* remove all interfaces */
67 list_for_each_entry(sdata, &local->interfaces, list) {
68 cancel_work_sync(&sdata->work);
70 switch(sdata->vif.type) {
71 case NL80211_IFTYPE_STATION:
72 ieee80211_sta_quiesce(sdata);
74 case NL80211_IFTYPE_ADHOC:
75 ieee80211_ibss_quiesce(sdata);
77 case NL80211_IFTYPE_MESH_POINT:
78 ieee80211_mesh_quiesce(sdata);
80 case NL80211_IFTYPE_AP_VLAN:
81 case NL80211_IFTYPE_MONITOR:
82 /* don't tell driver about this */
88 if (!ieee80211_sdata_running(sdata))
91 /* disable beaconing */
92 ieee80211_bss_info_change_notify(sdata,
93 BSS_CHANGED_BEACON_ENABLED);
95 drv_remove_interface(local, &sdata->vif);
98 /* stop hardware - this must stop RX */
99 if (local->open_count)
100 ieee80211_stop_device(local);
102 local->suspended = true;
103 /* need suspended to be visible before quiescing is false */
105 local->quiescing = false;
111 * __ieee80211_resume() is a static inline which just calls
112 * ieee80211_reconfig(), which is also needed for hardware
113 * hang/firmware failure/etc. recovery.