Root/
1 | #include <net/mac80211.h> |
2 | #include <net/rtnetlink.h> |
3 | |
4 | #include "ieee80211_i.h" |
5 | #include "mesh.h" |
6 | #include "driver-ops.h" |
7 | #include "led.h" |
8 | |
9 | /* return value indicates whether the driver should be further notified */ |
10 | static void 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 | break; |
16 | case NL80211_IFTYPE_ADHOC: |
17 | ieee80211_ibss_quiesce(sdata); |
18 | break; |
19 | case NL80211_IFTYPE_MESH_POINT: |
20 | ieee80211_mesh_quiesce(sdata); |
21 | break; |
22 | default: |
23 | break; |
24 | } |
25 | |
26 | cancel_work_sync(&sdata->work); |
27 | } |
28 | |
29 | int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) |
30 | { |
31 | struct ieee80211_local *local = hw_to_local(hw); |
32 | struct ieee80211_sub_if_data *sdata; |
33 | struct sta_info *sta; |
34 | struct ieee80211_chanctx *ctx; |
35 | |
36 | if (!local->open_count) |
37 | goto suspend; |
38 | |
39 | ieee80211_scan_cancel(local); |
40 | |
41 | ieee80211_dfs_cac_cancel(local); |
42 | |
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( |
48 | sta, AGG_STOP_LOCAL_REQUEST); |
49 | } |
50 | mutex_unlock(&local->sta_mtx); |
51 | } |
52 | |
53 | ieee80211_stop_queues_by_reason(hw, |
54 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); |
55 | |
56 | /* flush out all packets */ |
57 | synchronize_net(); |
58 | |
59 | drv_flush(local, false); |
60 | |
61 | local->quiescing = true; |
62 | /* make quiescing visible to timers everywhere */ |
63 | mb(); |
64 | |
65 | flush_workqueue(local->workqueue); |
66 | |
67 | /* Don't try to run timers while suspended. */ |
68 | del_timer_sync(&local->sta_cleanup); |
69 | |
70 | /* |
71 | * Note that this particular timer doesn't need to be |
72 | * restarted at resume. |
73 | */ |
74 | cancel_work_sync(&local->dynamic_ps_enable_work); |
75 | del_timer_sync(&local->dynamic_ps_timer); |
76 | |
77 | local->wowlan = wowlan && local->open_count; |
78 | if (local->wowlan) { |
79 | int err = drv_suspend(local, wowlan); |
80 | if (err < 0) { |
81 | local->quiescing = false; |
82 | local->wowlan = false; |
83 | if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
84 | mutex_lock(&local->sta_mtx); |
85 | list_for_each_entry(sta, |
86 | &local->sta_list, list) { |
87 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
88 | } |
89 | mutex_unlock(&local->sta_mtx); |
90 | } |
91 | ieee80211_wake_queues_by_reason(hw, |
92 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); |
93 | return err; |
94 | } else if (err > 0) { |
95 | WARN_ON(err != 1); |
96 | local->wowlan = false; |
97 | } else { |
98 | list_for_each_entry(sdata, &local->interfaces, list) |
99 | if (ieee80211_sdata_running(sdata)) |
100 | ieee80211_quiesce(sdata); |
101 | goto suspend; |
102 | } |
103 | } |
104 | |
105 | /* disable keys */ |
106 | list_for_each_entry(sdata, &local->interfaces, list) |
107 | ieee80211_disable_keys(sdata); |
108 | |
109 | /* tear down aggregation sessions and remove STAs */ |
110 | mutex_lock(&local->sta_mtx); |
111 | list_for_each_entry(sta, &local->sta_list, list) { |
112 | if (sta->uploaded) { |
113 | enum ieee80211_sta_state state; |
114 | |
115 | state = sta->sta_state; |
116 | for (; state > IEEE80211_STA_NOTEXIST; state--) |
117 | WARN_ON(drv_sta_state(local, sta->sdata, sta, |
118 | state, state - 1)); |
119 | } |
120 | |
121 | mesh_plink_quiesce(sta); |
122 | } |
123 | mutex_unlock(&local->sta_mtx); |
124 | |
125 | /* remove all interfaces */ |
126 | list_for_each_entry(sdata, &local->interfaces, list) { |
127 | static u8 zero_addr[ETH_ALEN] = {}; |
128 | u32 changed = 0; |
129 | |
130 | if (!ieee80211_sdata_running(sdata)) |
131 | continue; |
132 | |
133 | switch (sdata->vif.type) { |
134 | case NL80211_IFTYPE_AP_VLAN: |
135 | case NL80211_IFTYPE_MONITOR: |
136 | /* skip these */ |
137 | continue; |
138 | case NL80211_IFTYPE_STATION: |
139 | if (sdata->vif.bss_conf.assoc) |
140 | changed = BSS_CHANGED_ASSOC | |
141 | BSS_CHANGED_BSSID | |
142 | BSS_CHANGED_IDLE; |
143 | break; |
144 | case NL80211_IFTYPE_AP: |
145 | case NL80211_IFTYPE_ADHOC: |
146 | case NL80211_IFTYPE_MESH_POINT: |
147 | if (sdata->vif.bss_conf.enable_beacon) |
148 | changed = BSS_CHANGED_BEACON_ENABLED; |
149 | break; |
150 | default: |
151 | break; |
152 | } |
153 | |
154 | ieee80211_quiesce(sdata); |
155 | |
156 | sdata->suspend_bss_conf = sdata->vif.bss_conf; |
157 | memset(&sdata->vif.bss_conf, 0, sizeof(sdata->vif.bss_conf)); |
158 | sdata->vif.bss_conf.idle = true; |
159 | if (sdata->suspend_bss_conf.bssid) |
160 | sdata->vif.bss_conf.bssid = zero_addr; |
161 | |
162 | /* disable beaconing or remove association */ |
163 | ieee80211_bss_info_change_notify(sdata, changed); |
164 | |
165 | if (sdata->vif.type == NL80211_IFTYPE_AP && |
166 | rcu_access_pointer(sdata->u.ap.beacon)) |
167 | drv_stop_ap(local, sdata); |
168 | |
169 | if (local->use_chanctx) { |
170 | struct ieee80211_chanctx_conf *conf; |
171 | |
172 | mutex_lock(&local->chanctx_mtx); |
173 | conf = rcu_dereference_protected( |
174 | sdata->vif.chanctx_conf, |
175 | lockdep_is_held(&local->chanctx_mtx)); |
176 | if (conf) { |
177 | ctx = container_of(conf, |
178 | struct ieee80211_chanctx, |
179 | conf); |
180 | drv_unassign_vif_chanctx(local, sdata, ctx); |
181 | } |
182 | |
183 | mutex_unlock(&local->chanctx_mtx); |
184 | } |
185 | drv_remove_interface(local, sdata); |
186 | } |
187 | |
188 | sdata = rtnl_dereference(local->monitor_sdata); |
189 | if (sdata) { |
190 | if (local->use_chanctx) { |
191 | struct ieee80211_chanctx_conf *conf; |
192 | |
193 | mutex_lock(&local->chanctx_mtx); |
194 | conf = rcu_dereference_protected( |
195 | sdata->vif.chanctx_conf, |
196 | lockdep_is_held(&local->chanctx_mtx)); |
197 | if (conf) { |
198 | ctx = container_of(conf, |
199 | struct ieee80211_chanctx, |
200 | conf); |
201 | drv_unassign_vif_chanctx(local, sdata, ctx); |
202 | } |
203 | |
204 | mutex_unlock(&local->chanctx_mtx); |
205 | } |
206 | |
207 | drv_remove_interface(local, sdata); |
208 | } |
209 | |
210 | mutex_lock(&local->chanctx_mtx); |
211 | list_for_each_entry(ctx, &local->chanctx_list, list) |
212 | drv_remove_chanctx(local, ctx); |
213 | mutex_unlock(&local->chanctx_mtx); |
214 | |
215 | /* stop hardware - this must stop RX */ |
216 | if (local->open_count) |
217 | ieee80211_stop_device(local); |
218 | |
219 | suspend: |
220 | local->suspended = true; |
221 | /* need suspended to be visible before quiescing is false */ |
222 | barrier(); |
223 | local->quiescing = false; |
224 | |
225 | return 0; |
226 | } |
227 | |
228 | /* |
229 | * __ieee80211_resume() is a static inline which just calls |
230 | * ieee80211_reconfig(), which is also needed for hardware |
231 | * hang/firmware failure/etc. recovery. |
232 | */ |
233 | |
234 | void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif, |
235 | struct cfg80211_wowlan_wakeup *wakeup, |
236 | gfp_t gfp) |
237 | { |
238 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
239 | |
240 | cfg80211_report_wowlan_wakeup(&sdata->wdev, wakeup, gfp); |
241 | } |
242 | EXPORT_SYMBOL(ieee80211_report_wowlan_wakeup); |
243 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9