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 | 9 | /* return value indicates whether the driver should be further notified */ |
61e8a48c | 10 | static void ieee80211_quiesce(struct ieee80211_sub_if_data *sdata) |
77572fd1 EP |
11 | { |
12 | switch (sdata->vif.type) { | |
13 | case NL80211_IFTYPE_STATION: | |
14 | ieee80211_sta_quiesce(sdata); | |
61e8a48c | 15 | break; |
77572fd1 EP |
16 | case NL80211_IFTYPE_ADHOC: |
17 | ieee80211_ibss_quiesce(sdata); | |
61e8a48c | 18 | break; |
77572fd1 EP |
19 | case NL80211_IFTYPE_MESH_POINT: |
20 | ieee80211_mesh_quiesce(sdata); | |
61e8a48c | 21 | break; |
77572fd1 | 22 | default: |
61e8a48c | 23 | break; |
77572fd1 | 24 | } |
61e8a48c JB |
25 | |
26 | cancel_work_sync(&sdata->work); | |
77572fd1 EP |
27 | } |
28 | ||
eecc4800 | 29 | int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) |
665af4fc BC |
30 | { |
31 | struct ieee80211_local *local = hw_to_local(hw); | |
32 | struct ieee80211_sub_if_data *sdata; | |
665af4fc | 33 | struct sta_info *sta; |
fe5f2559 | 34 | struct ieee80211_chanctx *ctx; |
665af4fc | 35 | |
94f9b97b JB |
36 | if (!local->open_count) |
37 | goto suspend; | |
38 | ||
4136c422 | 39 | ieee80211_scan_cancel(local); |
5bb644a0 | 40 | |
ca45de77 JB |
41 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
42 | mutex_lock(&local->sta_mtx); | |
43 | list_for_each_entry(sta, &local->sta_list, list) { | |
c2c98fde | 44 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 JB |
45 | ieee80211_sta_tear_down_BA_sessions( |
46 | sta, AGG_STOP_LOCAL_REQUEST); | |
ca45de77 JB |
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 | 79 | local->quiescing = false; |
3b08cf6b | 80 | local->wowlan = false; |
9ea4fa15 ES |
81 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
82 | mutex_lock(&local->sta_mtx); | |
83 | list_for_each_entry(sta, | |
84 | &local->sta_list, list) { | |
85 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
86 | } | |
87 | mutex_unlock(&local->sta_mtx); | |
88 | } | |
89 | ieee80211_wake_queues_by_reason(hw, | |
90 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
eecc4800 | 91 | return err; |
2b4562df JB |
92 | } else if (err > 0) { |
93 | WARN_ON(err != 1); | |
94 | local->wowlan = false; | |
95 | } else { | |
61e8a48c JB |
96 | list_for_each_entry(sdata, &local->interfaces, list) |
97 | if (ieee80211_sdata_running(sdata)) | |
98 | ieee80211_quiesce(sdata); | |
2b4562df | 99 | goto suspend; |
eecc4800 | 100 | } |
eecc4800 JB |
101 | } |
102 | ||
665af4fc BC |
103 | /* disable keys */ |
104 | list_for_each_entry(sdata, &local->interfaces, list) | |
105 | ieee80211_disable_keys(sdata); | |
106 | ||
2a419056 JB |
107 | /* tear down aggregation sessions and remove STAs */ |
108 | mutex_lock(&local->sta_mtx); | |
109 | list_for_each_entry(sta, &local->sta_list, list) { | |
f09603a2 JB |
110 | if (sta->uploaded) { |
111 | enum ieee80211_sta_state state; | |
112 | ||
f09603a2 JB |
113 | state = sta->sta_state; |
114 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
9d88c7f6 | 115 | WARN_ON(drv_sta_state(local, sta->sdata, sta, |
f09603a2 JB |
116 | state, state - 1)); |
117 | } | |
118 | ||
5bb644a0 | 119 | mesh_plink_quiesce(sta); |
665af4fc | 120 | } |
34e89507 | 121 | mutex_unlock(&local->sta_mtx); |
665af4fc BC |
122 | |
123 | /* remove all interfaces */ | |
124 | list_for_each_entry(sdata, &local->interfaces, list) { | |
ad2d223a | 125 | static u8 zero_addr[ETH_ALEN] = {}; |
b8dc1a35 | 126 | u32 changed = 0; |
529ba6e9 | 127 | |
61e8a48c | 128 | if (!ieee80211_sdata_running(sdata)) |
5bb644a0 | 129 | continue; |
665af4fc | 130 | |
61e8a48c JB |
131 | switch (sdata->vif.type) { |
132 | case NL80211_IFTYPE_AP_VLAN: | |
133 | case NL80211_IFTYPE_MONITOR: | |
134 | /* skip these */ | |
5bb644a0 | 135 | continue; |
529ba6e9 JB |
136 | case NL80211_IFTYPE_STATION: |
137 | if (sdata->vif.bss_conf.assoc) | |
138 | changed = BSS_CHANGED_ASSOC | | |
139 | BSS_CHANGED_BSSID | | |
140 | BSS_CHANGED_IDLE; | |
b8dc1a35 JB |
141 | break; |
142 | case NL80211_IFTYPE_AP: | |
143 | case NL80211_IFTYPE_ADHOC: | |
144 | case NL80211_IFTYPE_MESH_POINT: | |
145 | if (sdata->vif.bss_conf.enable_beacon) | |
146 | changed = BSS_CHANGED_BEACON_ENABLED; | |
147 | break; | |
61e8a48c | 148 | default: |
61e8a48c JB |
149 | break; |
150 | } | |
e874e658 | 151 | |
b8dc1a35 JB |
152 | ieee80211_quiesce(sdata); |
153 | ||
529ba6e9 JB |
154 | sdata->suspend_bss_conf = sdata->vif.bss_conf; |
155 | memset(&sdata->vif.bss_conf, 0, sizeof(sdata->vif.bss_conf)); | |
156 | sdata->vif.bss_conf.idle = true; | |
ad2d223a JB |
157 | if (sdata->suspend_bss_conf.bssid) |
158 | sdata->vif.bss_conf.bssid = zero_addr; | |
529ba6e9 JB |
159 | |
160 | /* disable beaconing or remove association */ | |
161 | ieee80211_bss_info_change_notify(sdata, changed); | |
97af7432 | 162 | |
1041638f JB |
163 | if (sdata->vif.type == NL80211_IFTYPE_AP && |
164 | rcu_access_pointer(sdata->u.ap.beacon)) | |
165 | drv_stop_ap(local, sdata); | |
166 | ||
fe5f2559 JB |
167 | if (local->use_chanctx) { |
168 | struct ieee80211_chanctx_conf *conf; | |
169 | ||
170 | mutex_lock(&local->chanctx_mtx); | |
171 | conf = rcu_dereference_protected( | |
172 | sdata->vif.chanctx_conf, | |
173 | lockdep_is_held(&local->chanctx_mtx)); | |
174 | if (conf) { | |
175 | ctx = container_of(conf, | |
176 | struct ieee80211_chanctx, | |
177 | conf); | |
178 | drv_unassign_vif_chanctx(local, sdata, ctx); | |
179 | } | |
180 | ||
181 | mutex_unlock(&local->chanctx_mtx); | |
182 | } | |
7b7eab6f | 183 | drv_remove_interface(local, sdata); |
665af4fc | 184 | } |
5bb644a0 | 185 | |
4b6f1dd6 | 186 | sdata = rtnl_dereference(local->monitor_sdata); |
fe5f2559 JB |
187 | if (sdata) { |
188 | if (local->use_chanctx) { | |
189 | struct ieee80211_chanctx_conf *conf; | |
190 | ||
191 | mutex_lock(&local->chanctx_mtx); | |
192 | conf = rcu_dereference_protected( | |
193 | sdata->vif.chanctx_conf, | |
194 | lockdep_is_held(&local->chanctx_mtx)); | |
195 | if (conf) { | |
196 | ctx = container_of(conf, | |
197 | struct ieee80211_chanctx, | |
198 | conf); | |
199 | drv_unassign_vif_chanctx(local, sdata, ctx); | |
200 | } | |
201 | ||
202 | mutex_unlock(&local->chanctx_mtx); | |
203 | } | |
204 | ||
4b6f1dd6 | 205 | drv_remove_interface(local, sdata); |
fe5f2559 JB |
206 | } |
207 | ||
208 | mutex_lock(&local->chanctx_mtx); | |
209 | list_for_each_entry(ctx, &local->chanctx_list, list) | |
210 | drv_remove_chanctx(local, ctx); | |
211 | mutex_unlock(&local->chanctx_mtx); | |
4b6f1dd6 | 212 | |
89c3a8ac | 213 | /* stop hardware - this must stop RX */ |
84f6a01c JB |
214 | if (local->open_count) |
215 | ieee80211_stop_device(local); | |
89c3a8ac | 216 | |
eecc4800 | 217 | suspend: |
5bb644a0 | 218 | local->suspended = true; |
89c3a8ac JB |
219 | /* need suspended to be visible before quiescing is false */ |
220 | barrier(); | |
5bb644a0 JB |
221 | local->quiescing = false; |
222 | ||
665af4fc BC |
223 | return 0; |
224 | } | |
225 | ||
f2753ddb JB |
226 | /* |
227 | * __ieee80211_resume() is a static inline which just calls | |
228 | * ieee80211_reconfig(), which is also needed for hardware | |
229 | * hang/firmware failure/etc. recovery. | |
230 | */ | |
cd8f7cb4 JB |
231 | |
232 | void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif, | |
233 | struct cfg80211_wowlan_wakeup *wakeup, | |
234 | gfp_t gfp) | |
235 | { | |
236 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
237 | ||
238 | cfg80211_report_wowlan_wakeup(&sdata->wdev, wakeup, gfp); | |
239 | } | |
240 | EXPORT_SYMBOL(ieee80211_report_wowlan_wakeup); |