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
;
36 struct ieee80211_chanctx
*ctx
;
38 if (!local
->open_count
)
41 ieee80211_scan_cancel(local
);
43 if (hw
->flags
& IEEE80211_HW_AMPDU_AGGREGATION
) {
44 mutex_lock(&local
->sta_mtx
);
45 list_for_each_entry(sta
, &local
->sta_list
, list
) {
46 set_sta_flag(sta
, WLAN_STA_BLOCK_BA
);
47 ieee80211_sta_tear_down_BA_sessions(sta
, true);
49 mutex_unlock(&local
->sta_mtx
);
52 ieee80211_stop_queues_by_reason(hw
,
53 IEEE80211_QUEUE_STOP_REASON_SUSPEND
);
55 /* flush out all packets */
58 drv_flush(local
, false);
60 local
->quiescing
= true;
61 /* make quiescing visible to timers everywhere */
64 flush_workqueue(local
->workqueue
);
66 /* Don't try to run timers while suspended. */
67 del_timer_sync(&local
->sta_cleanup
);
70 * Note that this particular timer doesn't need to be
71 * restarted at resume.
73 cancel_work_sync(&local
->dynamic_ps_enable_work
);
74 del_timer_sync(&local
->dynamic_ps_timer
);
76 local
->wowlan
= wowlan
&& local
->open_count
;
78 int err
= drv_suspend(local
, wowlan
);
80 local
->quiescing
= false;
81 local
->wowlan
= false;
82 if (hw
->flags
& IEEE80211_HW_AMPDU_AGGREGATION
) {
83 mutex_lock(&local
->sta_mtx
);
84 list_for_each_entry(sta
,
85 &local
->sta_list
, list
) {
86 clear_sta_flag(sta
, WLAN_STA_BLOCK_BA
);
88 mutex_unlock(&local
->sta_mtx
);
90 ieee80211_wake_queues_by_reason(hw
,
91 IEEE80211_QUEUE_STOP_REASON_SUSPEND
);
95 local
->wowlan
= false;
97 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
98 cancel_work_sync(&sdata
->work
);
99 ieee80211_quiesce(sdata
);
106 list_for_each_entry(sdata
, &local
->interfaces
, list
)
107 ieee80211_disable_keys(sdata
);
109 /* tear down aggregation sessions and remove STAs */
110 mutex_lock(&local
->sta_mtx
);
111 list_for_each_entry(sta
, &local
->sta_list
, list
) {
113 enum ieee80211_sta_state state
;
115 state
= sta
->sta_state
;
116 for (; state
> IEEE80211_STA_NOTEXIST
; state
--)
117 WARN_ON(drv_sta_state(local
, sta
->sdata
, sta
,
121 mesh_plink_quiesce(sta
);
123 mutex_unlock(&local
->sta_mtx
);
125 /* remove all interfaces */
126 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
127 cancel_work_sync(&sdata
->work
);
129 if (!ieee80211_quiesce(sdata
))
132 if (!ieee80211_sdata_running(sdata
))
135 /* disable beaconing */
136 ieee80211_bss_info_change_notify(sdata
,
137 BSS_CHANGED_BEACON_ENABLED
);
139 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
&&
140 rcu_access_pointer(sdata
->u
.ap
.beacon
))
141 drv_stop_ap(local
, sdata
);
143 if (local
->use_chanctx
) {
144 struct ieee80211_chanctx_conf
*conf
;
146 mutex_lock(&local
->chanctx_mtx
);
147 conf
= rcu_dereference_protected(
148 sdata
->vif
.chanctx_conf
,
149 lockdep_is_held(&local
->chanctx_mtx
));
151 ctx
= container_of(conf
,
152 struct ieee80211_chanctx
,
154 drv_unassign_vif_chanctx(local
, sdata
, ctx
);
157 mutex_unlock(&local
->chanctx_mtx
);
159 drv_remove_interface(local
, sdata
);
162 sdata
= rtnl_dereference(local
->monitor_sdata
);
164 if (local
->use_chanctx
) {
165 struct ieee80211_chanctx_conf
*conf
;
167 mutex_lock(&local
->chanctx_mtx
);
168 conf
= rcu_dereference_protected(
169 sdata
->vif
.chanctx_conf
,
170 lockdep_is_held(&local
->chanctx_mtx
));
172 ctx
= container_of(conf
,
173 struct ieee80211_chanctx
,
175 drv_unassign_vif_chanctx(local
, sdata
, ctx
);
178 mutex_unlock(&local
->chanctx_mtx
);
181 drv_remove_interface(local
, sdata
);
184 mutex_lock(&local
->chanctx_mtx
);
185 list_for_each_entry(ctx
, &local
->chanctx_list
, list
)
186 drv_remove_chanctx(local
, ctx
);
187 mutex_unlock(&local
->chanctx_mtx
);
189 /* stop hardware - this must stop RX */
190 if (local
->open_count
)
191 ieee80211_stop_device(local
);
194 local
->suspended
= true;
195 /* need suspended to be visible before quiescing is false */
197 local
->quiescing
= false;
203 * __ieee80211_resume() is a static inline which just calls
204 * ieee80211_reconfig(), which is also needed for hardware
205 * hang/firmware failure/etc. recovery.