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
9int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
10{
11 struct ieee80211_local *local = hw_to_local(hw);
12 struct ieee80211_sub_if_data *sdata;
13 struct sta_info *sta;
14
15 if (!local->open_count)
16 goto suspend;
17
18 ieee80211_scan_cancel(local);
19
20 ieee80211_dfs_cac_cancel(local);
21
22 ieee80211_roc_purge(local, NULL);
23
24 ieee80211_del_virtual_monitor(local);
25
26 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
27 mutex_lock(&local->sta_mtx);
28 list_for_each_entry(sta, &local->sta_list, list) {
29 set_sta_flag(sta, WLAN_STA_BLOCK_BA);
30 ieee80211_sta_tear_down_BA_sessions(
31 sta, AGG_STOP_LOCAL_REQUEST);
32 }
33 mutex_unlock(&local->sta_mtx);
34 }
35
36 ieee80211_stop_queues_by_reason(hw,
37 IEEE80211_MAX_QUEUE_MAP,
38 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
39 false);
40
41
42 synchronize_net();
43
44 ieee80211_flush_queues(local, NULL, true);
45
46 local->quiescing = true;
47
48 mb();
49
50 flush_workqueue(local->workqueue);
51
52
53 del_timer_sync(&local->sta_cleanup);
54
55
56
57
58
59 cancel_work_sync(&local->dynamic_ps_enable_work);
60 del_timer_sync(&local->dynamic_ps_timer);
61
62 local->wowlan = wowlan;
63 if (local->wowlan) {
64 int err;
65
66
67
68
69
70
71
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);
79
80
81
82
83
84
85
86
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 }
95 }
96
97 err = drv_suspend(local, wowlan);
98 if (err < 0) {
99 local->quiescing = false;
100 local->wowlan = false;
101 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
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,
110 IEEE80211_MAX_QUEUE_MAP,
111 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
112 false);
113 return err;
114 } else if (err > 0) {
115 WARN_ON(err != 1);
116
117
118
119 ieee80211_wake_queues_by_reason(hw,
120 IEEE80211_MAX_QUEUE_MAP,
121 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
122 false);
123 return err;
124 } else {
125 goto suspend;
126 }
127 }
128
129
130 list_for_each_entry(sdata, &local->interfaces, list) {
131 if (!ieee80211_sdata_running(sdata))
132 continue;
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;
140 case NL80211_IFTYPE_WDS:
141
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;
155 default:
156 break;
157 }
158
159 drv_remove_interface(local, sdata);
160 }
161
162
163
164
165
166 WARN_ON(!list_empty(&local->chanctx_list));
167
168
169 if (local->open_count)
170 ieee80211_stop_device(local);
171
172 suspend:
173 local->suspended = true;
174
175 barrier();
176 local->quiescing = false;
177
178 return 0;
179}
180
181
182
183
184
185
186
187void 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}
195EXPORT_SYMBOL(ieee80211_report_wowlan_wakeup);
196