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Bob Copeland665af4f2009-01-19 11:20:53 -05001#include <net/mac80211.h>
2#include <net/rtnetlink.h>
3
4#include "ieee80211_i.h"
Johannes Berg5bb644a2009-05-17 11:40:42 +02005#include "mesh.h"
Johannes Berg24487982009-04-23 18:52:52 +02006#include "driver-ops.h"
Bob Copeland665af4f2009-01-19 11:20:53 -05007#include "led.h"
8
9int __ieee80211_suspend(struct ieee80211_hw *hw)
10{
11 struct ieee80211_local *local = hw_to_local(hw);
12 struct ieee80211_sub_if_data *sdata;
Bob Copeland665af4f2009-01-19 11:20:53 -050013 struct sta_info *sta;
14
Johannes Berg5bb644a2009-05-17 11:40:42 +020015 ieee80211_scan_cancel(local);
16
Johannes Berg25420602009-03-13 11:43:36 +010017 ieee80211_stop_queues_by_reason(hw,
18 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
19
Johannes Berg5bb644a2009-05-17 11:40:42 +020020 /* flush out all packets */
21 synchronize_net();
22
23 local->quiescing = true;
24 /* make quiescing visible to timers everywhere */
25 mb();
26
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -040027 flush_workqueue(local->workqueue);
Bob Copeland665af4f2009-01-19 11:20:53 -050028
Johannes Berg5bb644a2009-05-17 11:40:42 +020029 /* Don't try to run timers while suspended. */
30 del_timer_sync(&local->sta_cleanup);
31
32 /*
33 * Note that this particular timer doesn't need to be
34 * restarted at resume.
35 */
36 cancel_work_sync(&local->dynamic_ps_enable_work);
37 del_timer_sync(&local->dynamic_ps_timer);
38
Bob Copeland665af4f2009-01-19 11:20:53 -050039 /* disable keys */
40 list_for_each_entry(sdata, &local->interfaces, list)
41 ieee80211_disable_keys(sdata);
42
Sujith722f0692009-03-17 08:50:06 +053043 /* Tear down aggregation sessions */
44
45 rcu_read_lock();
46
47 if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
48 list_for_each_entry_rcu(sta, &local->sta_list, list) {
49 set_sta_flags(sta, WLAN_STA_SUSPEND);
50 ieee80211_sta_tear_down_BA_sessions(sta);
51 }
52 }
53
54 rcu_read_unlock();
55
Bob Copeland665af4f2009-01-19 11:20:53 -050056 /* remove STAs */
Johannes Berg34e89502010-02-03 13:59:58 +010057 mutex_lock(&local->sta_mtx);
Johannes Berg5bb644a2009-05-17 11:40:42 +020058 list_for_each_entry(sta, &local->sta_list, list) {
Johannes Berg34e89502010-02-03 13:59:58 +010059 if (sta->uploaded) {
Johannes Berg5bb644a2009-05-17 11:40:42 +020060 sdata = sta->sdata;
Bob Copeland665af4f2009-01-19 11:20:53 -050061 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
62 sdata = container_of(sdata->bss,
63 struct ieee80211_sub_if_data,
64 u.ap);
65
Johannes Berg34e89502010-02-03 13:59:58 +010066 drv_sta_remove(local, sdata, &sta->sta);
Bob Copeland665af4f2009-01-19 11:20:53 -050067 }
Johannes Berg5bb644a2009-05-17 11:40:42 +020068
69 mesh_plink_quiesce(sta);
Bob Copeland665af4f2009-01-19 11:20:53 -050070 }
Johannes Berg34e89502010-02-03 13:59:58 +010071 mutex_unlock(&local->sta_mtx);
Bob Copeland665af4f2009-01-19 11:20:53 -050072
73 /* remove all interfaces */
74 list_for_each_entry(sdata, &local->interfaces, list) {
Johannes Berg5bb644a2009-05-17 11:40:42 +020075 switch(sdata->vif.type) {
76 case NL80211_IFTYPE_STATION:
77 ieee80211_sta_quiesce(sdata);
78 break;
79 case NL80211_IFTYPE_ADHOC:
80 ieee80211_ibss_quiesce(sdata);
81 break;
82 case NL80211_IFTYPE_MESH_POINT:
83 ieee80211_mesh_quiesce(sdata);
84 break;
85 case NL80211_IFTYPE_AP_VLAN:
86 case NL80211_IFTYPE_MONITOR:
87 /* don't tell driver about this */
88 continue;
89 default:
90 break;
Bob Copeland665af4f2009-01-19 11:20:53 -050091 }
Johannes Berg5bb644a2009-05-17 11:40:42 +020092
Johannes Berg9607e6b2009-12-23 13:15:31 +010093 if (!ieee80211_sdata_running(sdata))
Johannes Berg5bb644a2009-05-17 11:40:42 +020094 continue;
95
Bob Copeland97af7432009-07-29 10:13:03 +020096 /* disable beaconing */
97 ieee80211_bss_info_change_notify(sdata,
98 BSS_CHANGED_BEACON_ENABLED);
99
Johannes Berg1ed32e42009-12-23 13:15:45 +0100100 drv_remove_interface(local, &sdata->vif);
Bob Copeland665af4f2009-01-19 11:20:53 -0500101 }
102
Johannes Berg89c3a8a2009-07-28 18:10:17 +0200103 /* stop hardware - this must stop RX */
Johannes Berg84f6a012009-08-20 20:02:20 +0200104 if (local->open_count)
105 ieee80211_stop_device(local);
Johannes Berg89c3a8a2009-07-28 18:10:17 +0200106
Johannes Berg5bb644a2009-05-17 11:40:42 +0200107 local->suspended = true;
Johannes Berg89c3a8a2009-07-28 18:10:17 +0200108 /* need suspended to be visible before quiescing is false */
109 barrier();
Johannes Berg5bb644a2009-05-17 11:40:42 +0200110 local->quiescing = false;
Bob Copelande874e652009-01-24 13:21:14 -0500111
Bob Copeland665af4f2009-01-19 11:20:53 -0500112 return 0;
113}
114
Johannes Bergf2753dd2009-04-14 10:09:24 +0200115/*
116 * __ieee80211_resume() is a static inline which just calls
117 * ieee80211_reconfig(), which is also needed for hardware
118 * hang/firmware failure/etc. recovery.
119 */