Commit | Line | Data |
---|---|---|
665af4fc BC |
1 | #include <net/mac80211.h> |
2 | #include <net/rtnetlink.h> | |
3 | ||
4 | #include "ieee80211_i.h" | |
5bb644a0 | 5 | #include "mesh.h" |
24487981 | 6 | #include "driver-ops.h" |
665af4fc BC |
7 | #include "led.h" |
8 | ||
77572fd1 EP |
9 | /* return value indicates whether the driver should be further notified */ |
10 | static bool ieee80211_quiesce(struct ieee80211_sub_if_data *sdata) | |
11 | { | |
12 | switch (sdata->vif.type) { | |
13 | case NL80211_IFTYPE_STATION: | |
14 | ieee80211_sta_quiesce(sdata); | |
15 | return true; | |
16 | case NL80211_IFTYPE_ADHOC: | |
17 | ieee80211_ibss_quiesce(sdata); | |
18 | return true; | |
19 | case NL80211_IFTYPE_MESH_POINT: | |
20 | ieee80211_mesh_quiesce(sdata); | |
21 | return true; | |
22 | case NL80211_IFTYPE_AP_VLAN: | |
23 | case NL80211_IFTYPE_MONITOR: | |
24 | /* don't tell driver about this */ | |
25 | return false; | |
26 | default: | |
27 | return true; | |
28 | } | |
29 | } | |
30 | ||
eecc4800 | 31 | int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) |
665af4fc BC |
32 | { |
33 | struct ieee80211_local *local = hw_to_local(hw); | |
34 | struct ieee80211_sub_if_data *sdata; | |
665af4fc BC |
35 | struct sta_info *sta; |
36 | ||
4136c422 | 37 | ieee80211_scan_cancel(local); |
5bb644a0 | 38 | |
ca45de77 JB |
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); | |
44 | } | |
45 | mutex_unlock(&local->sta_mtx); | |
46 | } | |
47 | ||
25420604 JB |
48 | ieee80211_stop_queues_by_reason(hw, |
49 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
50 | ||
5bb644a0 JB |
51 | /* flush out all packets */ |
52 | synchronize_net(); | |
53 | ||
ca45de77 JB |
54 | drv_flush(local, false); |
55 | ||
5bb644a0 JB |
56 | local->quiescing = true; |
57 | /* make quiescing visible to timers everywhere */ | |
58 | mb(); | |
59 | ||
42935eca | 60 | flush_workqueue(local->workqueue); |
665af4fc | 61 | |
5bb644a0 JB |
62 | /* Don't try to run timers while suspended. */ |
63 | del_timer_sync(&local->sta_cleanup); | |
64 | ||
65 | /* | |
66 | * Note that this particular timer doesn't need to be | |
67 | * restarted at resume. | |
68 | */ | |
69 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
70 | del_timer_sync(&local->dynamic_ps_timer); | |
71 | ||
eecc4800 JB |
72 | local->wowlan = wowlan && local->open_count; |
73 | if (local->wowlan) { | |
74 | int err = drv_suspend(local, wowlan); | |
75 | if (err) { | |
76 | local->quiescing = false; | |
77 | return err; | |
78 | } | |
77572fd1 EP |
79 | list_for_each_entry(sdata, &local->interfaces, list) { |
80 | cancel_work_sync(&sdata->work); | |
81 | ieee80211_quiesce(sdata); | |
82 | } | |
eecc4800 JB |
83 | goto suspend; |
84 | } | |
85 | ||
665af4fc BC |
86 | /* disable keys */ |
87 | list_for_each_entry(sdata, &local->interfaces, list) | |
88 | ieee80211_disable_keys(sdata); | |
89 | ||
2a419056 JB |
90 | /* tear down aggregation sessions and remove STAs */ |
91 | mutex_lock(&local->sta_mtx); | |
92 | list_for_each_entry(sta, &local->sta_list, list) { | |
34e89507 | 93 | if (sta->uploaded) { |
5bb644a0 | 94 | sdata = sta->sdata; |
665af4fc BC |
95 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
96 | sdata = container_of(sdata->bss, | |
97 | struct ieee80211_sub_if_data, | |
98 | u.ap); | |
99 | ||
34e89507 | 100 | drv_sta_remove(local, sdata, &sta->sta); |
665af4fc | 101 | } |
5bb644a0 JB |
102 | |
103 | mesh_plink_quiesce(sta); | |
665af4fc | 104 | } |
34e89507 | 105 | mutex_unlock(&local->sta_mtx); |
665af4fc BC |
106 | |
107 | /* remove all interfaces */ | |
108 | list_for_each_entry(sdata, &local->interfaces, list) { | |
64592c8f JB |
109 | cancel_work_sync(&sdata->work); |
110 | ||
77572fd1 | 111 | if (!ieee80211_quiesce(sdata)) |
5bb644a0 | 112 | continue; |
665af4fc | 113 | |
9607e6b6 | 114 | if (!ieee80211_sdata_running(sdata)) |
5bb644a0 | 115 | continue; |
e874e658 | 116 | |
97af7432 BC |
117 | /* disable beaconing */ |
118 | ieee80211_bss_info_change_notify(sdata, | |
119 | BSS_CHANGED_BEACON_ENABLED); | |
120 | ||
1ed32e4f | 121 | drv_remove_interface(local, &sdata->vif); |
665af4fc | 122 | } |
5bb644a0 | 123 | |
89c3a8ac | 124 | /* stop hardware - this must stop RX */ |
84f6a01c JB |
125 | if (local->open_count) |
126 | ieee80211_stop_device(local); | |
89c3a8ac | 127 | |
eecc4800 | 128 | suspend: |
5bb644a0 | 129 | local->suspended = true; |
89c3a8ac JB |
130 | /* need suspended to be visible before quiescing is false */ |
131 | barrier(); | |
5bb644a0 JB |
132 | local->quiescing = false; |
133 | ||
665af4fc BC |
134 | return 0; |
135 | } | |
136 | ||
f2753ddb JB |
137 | /* |
138 | * __ieee80211_resume() is a static inline which just calls | |
139 | * ieee80211_reconfig(), which is also needed for hardware | |
140 | * hang/firmware failure/etc. recovery. | |
141 | */ |