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 if (!local
->open_count
)
40 ieee80211_scan_cancel(local
);
42 if (hw
->flags
& IEEE80211_HW_AMPDU_AGGREGATION
) {
43 mutex_lock(&local
->sta_mtx
);
44 list_for_each_entry(sta
, &local
->sta_list
, list
) {
45 set_sta_flag(sta
, WLAN_STA_BLOCK_BA
);
46 ieee80211_sta_tear_down_BA_sessions(sta
, true);
48 mutex_unlock(&local
->sta_mtx
);
51 ieee80211_stop_queues_by_reason(hw
,
52 IEEE80211_QUEUE_STOP_REASON_SUSPEND
);
54 /* flush out all packets */
57 drv_flush(local
, false);
59 local
->quiescing
= true;
60 /* make quiescing visible to timers everywhere */
63 flush_workqueue(local
->workqueue
);
65 /* Don't try to run timers while suspended. */
66 del_timer_sync(&local
->sta_cleanup
);
69 * Note that this particular timer doesn't need to be
70 * restarted at resume.
72 cancel_work_sync(&local
->dynamic_ps_enable_work
);
73 del_timer_sync(&local
->dynamic_ps_timer
);
75 local
->wowlan
= wowlan
&& local
->open_count
;
77 int err
= drv_suspend(local
, wowlan
);
79 local
->quiescing
= false;
83 local
->wowlan
= false;
85 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
86 cancel_work_sync(&sdata
->work
);
87 ieee80211_quiesce(sdata
);
94 list_for_each_entry(sdata
, &local
->interfaces
, list
)
95 ieee80211_disable_keys(sdata
);
97 /* tear down aggregation sessions and remove STAs */
98 mutex_lock(&local
->sta_mtx
);
99 list_for_each_entry(sta
, &local
->sta_list
, list
) {
102 if (sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
)
103 sdata
= container_of(sdata
->bss
,
104 struct ieee80211_sub_if_data
,
107 drv_sta_remove(local
, sdata
, &sta
->sta
);
110 mesh_plink_quiesce(sta
);
112 mutex_unlock(&local
->sta_mtx
);
114 /* remove all interfaces */
115 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
116 cancel_work_sync(&sdata
->work
);
118 if (!ieee80211_quiesce(sdata
))
121 if (!ieee80211_sdata_running(sdata
))
124 /* disable beaconing */
125 ieee80211_bss_info_change_notify(sdata
,
126 BSS_CHANGED_BEACON_ENABLED
);
128 drv_remove_interface(local
, &sdata
->vif
);
131 /* stop hardware - this must stop RX */
132 if (local
->open_count
)
133 ieee80211_stop_device(local
);
136 local
->suspended
= true;
137 /* need suspended to be visible before quiescing is false */
139 local
->quiescing
= false;
145 * __ieee80211_resume() is a static inline which just calls
146 * ieee80211_reconfig(), which is also needed for hardware
147 * hang/firmware failure/etc. recovery.