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 | ||
eecc4800 | 9 | int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) |
665af4fc BC |
10 | { |
11 | struct ieee80211_local *local = hw_to_local(hw); | |
12 | struct ieee80211_sub_if_data *sdata; | |
665af4fc BC |
13 | struct sta_info *sta; |
14 | ||
94f9b97b JB |
15 | if (!local->open_count) |
16 | goto suspend; | |
17 | ||
4136c422 | 18 | ieee80211_scan_cancel(local); |
5bb644a0 | 19 | |
164eb02d SW |
20 | ieee80211_dfs_cac_cancel(local); |
21 | ||
c8f994ee JB |
22 | ieee80211_roc_purge(local, NULL); |
23 | ||
3c3e21e7 JB |
24 | ieee80211_del_virtual_monitor(local); |
25 | ||
30686bf7 | 26 | if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { |
ca45de77 JB |
27 | mutex_lock(&local->sta_mtx); |
28 | list_for_each_entry(sta, &local->sta_list, list) { | |
c2c98fde | 29 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 JB |
30 | ieee80211_sta_tear_down_BA_sessions( |
31 | sta, AGG_STOP_LOCAL_REQUEST); | |
ca45de77 JB |
32 | } |
33 | mutex_unlock(&local->sta_mtx); | |
34 | } | |
35 | ||
25420604 | 36 | ieee80211_stop_queues_by_reason(hw, |
445ea4e8 | 37 | IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
38 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
39 | false); | |
25420604 | 40 | |
d34ba216 | 41 | /* flush out all packets */ |
8ceb5955 | 42 | synchronize_net(); |
5bb644a0 | 43 | |
3b24f4c6 | 44 | ieee80211_flush_queues(local, NULL, true); |
ca45de77 | 45 | |
5bb644a0 JB |
46 | local->quiescing = true; |
47 | /* make quiescing visible to timers everywhere */ | |
48 | mb(); | |
49 | ||
42935eca | 50 | flush_workqueue(local->workqueue); |
665af4fc | 51 | |
5bb644a0 JB |
52 | /* Don't try to run timers while suspended. */ |
53 | del_timer_sync(&local->sta_cleanup); | |
54 | ||
55 | /* | |
56 | * Note that this particular timer doesn't need to be | |
57 | * restarted at resume. | |
58 | */ | |
59 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
60 | del_timer_sync(&local->dynamic_ps_timer); | |
61 | ||
8bb6f4b9 | 62 | local->wowlan = wowlan; |
eecc4800 | 63 | if (local->wowlan) { |
ef7c6725 JB |
64 | int err; |
65 | ||
66 | /* Drivers don't expect to suspend while some operations like | |
67 | * authenticating or associating are in progress. It doesn't | |
68 | * make sense anyway to accept that, since the authentication | |
69 | * or association would never finish since the driver can't do | |
70 | * that on its own. | |
71 | * Thus, clean up in-progress auth/assoc first. | |
72 | */ | |
73 | list_for_each_entry(sdata, &local->interfaces, list) { | |
74 | if (!ieee80211_sdata_running(sdata)) | |
75 | continue; | |
76 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
77 | continue; | |
78 | ieee80211_mgd_quiesce(sdata); | |
541b6ed7 C |
79 | /* If suspended during TX in progress, and wowlan |
80 | * is enabled (connection will be active) there | |
81 | * can be a race where the driver is put out | |
82 | * of power-save due to TX and during suspend | |
83 | * dynamic_ps_timer is cancelled and TX packet | |
84 | * is flushed, leaving the driver in ACTIVE even | |
85 | * after resuming until dynamic_ps_timer puts | |
86 | * driver back in DOZE. | |
87 | */ | |
88 | if (sdata->u.mgd.associated && | |
89 | sdata->u.mgd.powersave && | |
90 | !(local->hw.conf.flags & IEEE80211_CONF_PS)) { | |
91 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
92 | ieee80211_hw_config(local, | |
93 | IEEE80211_CONF_CHANGE_PS); | |
94 | } | |
ef7c6725 JB |
95 | } |
96 | ||
97 | err = drv_suspend(local, wowlan); | |
2b4562df | 98 | if (err < 0) { |
eecc4800 | 99 | local->quiescing = false; |
3b08cf6b | 100 | local->wowlan = false; |
30686bf7 | 101 | if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { |
9ea4fa15 ES |
102 | mutex_lock(&local->sta_mtx); |
103 | list_for_each_entry(sta, | |
104 | &local->sta_list, list) { | |
105 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
106 | } | |
107 | mutex_unlock(&local->sta_mtx); | |
108 | } | |
109 | ieee80211_wake_queues_by_reason(hw, | |
445ea4e8 | 110 | IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
111 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
112 | false); | |
eecc4800 | 113 | return err; |
2b4562df JB |
114 | } else if (err > 0) { |
115 | WARN_ON(err != 1); | |
23e37098 JB |
116 | /* cfg80211 will call back into mac80211 to disconnect |
117 | * all interfaces, allow that to proceed properly | |
118 | */ | |
119 | ieee80211_wake_queues_by_reason(hw, | |
120 | IEEE80211_MAX_QUEUE_MAP, | |
121 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, | |
122 | false); | |
81256969 | 123 | return err; |
2b4562df | 124 | } else { |
2b4562df | 125 | goto suspend; |
eecc4800 | 126 | } |
eecc4800 JB |
127 | } |
128 | ||
cd34f647 | 129 | /* remove all interfaces that were created in the driver */ |
665af4fc | 130 | list_for_each_entry(sdata, &local->interfaces, list) { |
1a1cb744 | 131 | if (!ieee80211_sdata_running(sdata)) |
5bb644a0 | 132 | continue; |
1a1cb744 JB |
133 | switch (sdata->vif.type) { |
134 | case NL80211_IFTYPE_AP_VLAN: | |
135 | case NL80211_IFTYPE_MONITOR: | |
136 | continue; | |
137 | case NL80211_IFTYPE_STATION: | |
138 | ieee80211_mgd_quiesce(sdata); | |
139 | break; | |
2af81d67 LC |
140 | case NL80211_IFTYPE_WDS: |
141 | /* tear down aggregation sessions and remove STAs */ | |
142 | mutex_lock(&local->sta_mtx); | |
143 | sta = sdata->u.wds.sta; | |
144 | if (sta && sta->uploaded) { | |
145 | enum ieee80211_sta_state state; | |
146 | ||
147 | state = sta->sta_state; | |
148 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
149 | WARN_ON(drv_sta_state(local, sta->sdata, | |
150 | sta, state, | |
151 | state - 1)); | |
152 | } | |
153 | mutex_unlock(&local->sta_mtx); | |
154 | break; | |
1a1cb744 JB |
155 | default: |
156 | break; | |
157 | } | |
cd34f647 | 158 | |
7b7eab6f | 159 | drv_remove_interface(local, sdata); |
665af4fc | 160 | } |
5bb644a0 | 161 | |
12e7f517 SG |
162 | /* |
163 | * We disconnected on all interfaces before suspend, all channel | |
164 | * contexts should be released. | |
165 | */ | |
166 | WARN_ON(!list_empty(&local->chanctx_list)); | |
4b6f1dd6 | 167 | |
89c3a8ac | 168 | /* stop hardware - this must stop RX */ |
84f6a01c JB |
169 | if (local->open_count) |
170 | ieee80211_stop_device(local); | |
89c3a8ac | 171 | |
eecc4800 | 172 | suspend: |
5bb644a0 | 173 | local->suspended = true; |
89c3a8ac JB |
174 | /* need suspended to be visible before quiescing is false */ |
175 | barrier(); | |
5bb644a0 JB |
176 | local->quiescing = false; |
177 | ||
665af4fc BC |
178 | return 0; |
179 | } | |
180 | ||
f2753ddb JB |
181 | /* |
182 | * __ieee80211_resume() is a static inline which just calls | |
183 | * ieee80211_reconfig(), which is also needed for hardware | |
184 | * hang/firmware failure/etc. recovery. | |
185 | */ | |
cd8f7cb4 JB |
186 | |
187 | void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif, | |
188 | struct cfg80211_wowlan_wakeup *wakeup, | |
189 | gfp_t gfp) | |
190 | { | |
191 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
192 | ||
193 | cfg80211_report_wowlan_wakeup(&sdata->wdev, wakeup, gfp); | |
194 | } | |
195 | EXPORT_SYMBOL(ieee80211_report_wowlan_wakeup); |