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Commit | Line | Data |
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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 | ||
94f9b97b JB |
37 | if (!local->open_count) |
38 | goto suspend; | |
39 | ||
4136c422 | 40 | ieee80211_scan_cancel(local); |
5bb644a0 | 41 | |
ca45de77 JB |
42 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
43 | mutex_lock(&local->sta_mtx); | |
44 | list_for_each_entry(sta, &local->sta_list, list) { | |
c2c98fde | 45 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
ca45de77 JB |
46 | ieee80211_sta_tear_down_BA_sessions(sta, true); |
47 | } | |
48 | mutex_unlock(&local->sta_mtx); | |
49 | } | |
50 | ||
25420604 JB |
51 | ieee80211_stop_queues_by_reason(hw, |
52 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
53 | ||
5bb644a0 JB |
54 | /* flush out all packets */ |
55 | synchronize_net(); | |
56 | ||
ca45de77 JB |
57 | drv_flush(local, false); |
58 | ||
5bb644a0 JB |
59 | local->quiescing = true; |
60 | /* make quiescing visible to timers everywhere */ | |
61 | mb(); | |
62 | ||
42935eca | 63 | flush_workqueue(local->workqueue); |
665af4fc | 64 | |
5bb644a0 JB |
65 | /* Don't try to run timers while suspended. */ |
66 | del_timer_sync(&local->sta_cleanup); | |
67 | ||
68 | /* | |
69 | * Note that this particular timer doesn't need to be | |
70 | * restarted at resume. | |
71 | */ | |
72 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
73 | del_timer_sync(&local->dynamic_ps_timer); | |
74 | ||
eecc4800 JB |
75 | local->wowlan = wowlan && local->open_count; |
76 | if (local->wowlan) { | |
77 | int err = drv_suspend(local, wowlan); | |
2b4562df | 78 | if (err < 0) { |
eecc4800 JB |
79 | local->quiescing = false; |
80 | return err; | |
2b4562df JB |
81 | } else if (err > 0) { |
82 | WARN_ON(err != 1); | |
83 | local->wowlan = false; | |
84 | } else { | |
85 | list_for_each_entry(sdata, &local->interfaces, list) { | |
86 | cancel_work_sync(&sdata->work); | |
87 | ieee80211_quiesce(sdata); | |
88 | } | |
89 | goto suspend; | |
eecc4800 | 90 | } |
eecc4800 JB |
91 | } |
92 | ||
665af4fc BC |
93 | /* disable keys */ |
94 | list_for_each_entry(sdata, &local->interfaces, list) | |
95 | ieee80211_disable_keys(sdata); | |
96 | ||
2a419056 JB |
97 | /* tear down aggregation sessions and remove STAs */ |
98 | mutex_lock(&local->sta_mtx); | |
99 | list_for_each_entry(sta, &local->sta_list, list) { | |
f09603a2 JB |
100 | if (sta->uploaded) { |
101 | enum ieee80211_sta_state state; | |
102 | ||
f09603a2 JB |
103 | state = sta->sta_state; |
104 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
105 | WARN_ON(drv_sta_state(local, sdata, sta, | |
106 | state, state - 1)); | |
107 | } | |
108 | ||
5bb644a0 | 109 | mesh_plink_quiesce(sta); |
665af4fc | 110 | } |
34e89507 | 111 | mutex_unlock(&local->sta_mtx); |
665af4fc BC |
112 | |
113 | /* remove all interfaces */ | |
114 | list_for_each_entry(sdata, &local->interfaces, list) { | |
64592c8f JB |
115 | cancel_work_sync(&sdata->work); |
116 | ||
77572fd1 | 117 | if (!ieee80211_quiesce(sdata)) |
5bb644a0 | 118 | continue; |
665af4fc | 119 | |
9607e6b6 | 120 | if (!ieee80211_sdata_running(sdata)) |
5bb644a0 | 121 | continue; |
e874e658 | 122 | |
97af7432 BC |
123 | /* disable beaconing */ |
124 | ieee80211_bss_info_change_notify(sdata, | |
125 | BSS_CHANGED_BEACON_ENABLED); | |
126 | ||
7b7eab6f | 127 | drv_remove_interface(local, sdata); |
665af4fc | 128 | } |
5bb644a0 | 129 | |
89c3a8ac | 130 | /* stop hardware - this must stop RX */ |
84f6a01c JB |
131 | if (local->open_count) |
132 | ieee80211_stop_device(local); | |
89c3a8ac | 133 | |
eecc4800 | 134 | suspend: |
5bb644a0 | 135 | local->suspended = true; |
89c3a8ac JB |
136 | /* need suspended to be visible before quiescing is false */ |
137 | barrier(); | |
5bb644a0 JB |
138 | local->quiescing = false; |
139 | ||
665af4fc BC |
140 | return 0; |
141 | } | |
142 | ||
f2753ddb JB |
143 | /* |
144 | * __ieee80211_resume() is a static inline which just calls | |
145 | * ieee80211_reconfig(), which is also needed for hardware | |
146 | * hang/firmware failure/etc. recovery. | |
147 | */ |