blob: e535f1c988fe74cd2f5b147977b8904e3d74ee36 [file] [log] [blame]
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;
13 struct ieee80211_if_init_conf conf;
14 struct sta_info *sta;
Johannes Berg7f0216a2009-03-14 09:42:49 +010015 unsigned long flags;
Bob Copeland665af4f2009-01-19 11:20:53 -050016
Johannes Berg5bb644a2009-05-17 11:40:42 +020017 ieee80211_scan_cancel(local);
18
Johannes Berg25420602009-03-13 11:43:36 +010019 ieee80211_stop_queues_by_reason(hw,
20 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
21
Johannes Berg5bb644a2009-05-17 11:40:42 +020022 /* flush out all packets */
23 synchronize_net();
24
25 local->quiescing = true;
26 /* make quiescing visible to timers everywhere */
27 mb();
28
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -040029 flush_workqueue(local->workqueue);
Bob Copeland665af4f2009-01-19 11:20:53 -050030
Johannes Berg5bb644a2009-05-17 11:40:42 +020031 /* Don't try to run timers while suspended. */
32 del_timer_sync(&local->sta_cleanup);
33
34 /*
35 * Note that this particular timer doesn't need to be
36 * restarted at resume.
37 */
38 cancel_work_sync(&local->dynamic_ps_enable_work);
39 del_timer_sync(&local->dynamic_ps_timer);
40
Bob Copeland665af4f2009-01-19 11:20:53 -050041 /* disable keys */
42 list_for_each_entry(sdata, &local->interfaces, list)
43 ieee80211_disable_keys(sdata);
44
Sujith722f0692009-03-17 08:50:06 +053045 /* Tear down aggregation sessions */
46
47 rcu_read_lock();
48
49 if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
50 list_for_each_entry_rcu(sta, &local->sta_list, list) {
51 set_sta_flags(sta, WLAN_STA_SUSPEND);
52 ieee80211_sta_tear_down_BA_sessions(sta);
53 }
54 }
55
56 rcu_read_unlock();
57
Bob Copeland665af4f2009-01-19 11:20:53 -050058 /* remove STAs */
Johannes Berg5bb644a2009-05-17 11:40:42 +020059 spin_lock_irqsave(&local->sta_lock, flags);
60 list_for_each_entry(sta, &local->sta_list, list) {
61 if (local->ops->sta_notify) {
62 sdata = sta->sdata;
Bob Copeland665af4f2009-01-19 11:20:53 -050063 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
64 sdata = container_of(sdata->bss,
65 struct ieee80211_sub_if_data,
66 u.ap);
67
Johannes Berg24487982009-04-23 18:52:52 +020068 drv_sta_notify(local, &sdata->vif, STA_NOTIFY_REMOVE,
69 &sta->sta);
Bob Copeland665af4f2009-01-19 11:20:53 -050070 }
Johannes Berg5bb644a2009-05-17 11:40:42 +020071
72 mesh_plink_quiesce(sta);
Bob Copeland665af4f2009-01-19 11:20:53 -050073 }
Johannes Berg5bb644a2009-05-17 11:40:42 +020074 spin_unlock_irqrestore(&local->sta_lock, flags);
Bob Copeland665af4f2009-01-19 11:20:53 -050075
76 /* remove all interfaces */
77 list_for_each_entry(sdata, &local->interfaces, list) {
Johannes Berg5bb644a2009-05-17 11:40:42 +020078 switch(sdata->vif.type) {
79 case NL80211_IFTYPE_STATION:
80 ieee80211_sta_quiesce(sdata);
81 break;
82 case NL80211_IFTYPE_ADHOC:
83 ieee80211_ibss_quiesce(sdata);
84 break;
85 case NL80211_IFTYPE_MESH_POINT:
86 ieee80211_mesh_quiesce(sdata);
87 break;
88 case NL80211_IFTYPE_AP_VLAN:
89 case NL80211_IFTYPE_MONITOR:
90 /* don't tell driver about this */
91 continue;
92 default:
93 break;
Bob Copeland665af4f2009-01-19 11:20:53 -050094 }
Johannes Berg5bb644a2009-05-17 11:40:42 +020095
96 if (!netif_running(sdata->dev))
97 continue;
98
Bob Copeland97af7432009-07-29 10:13:03 +020099 /* disable beaconing */
100 ieee80211_bss_info_change_notify(sdata,
101 BSS_CHANGED_BEACON_ENABLED);
102
Johannes Berg5bb644a2009-05-17 11:40:42 +0200103 conf.vif = &sdata->vif;
104 conf.type = sdata->vif.type;
105 conf.mac_addr = sdata->dev->dev_addr;
106 drv_remove_interface(local, &conf);
Bob Copeland665af4f2009-01-19 11:20:53 -0500107 }
108
Johannes Berg89c3a8a2009-07-28 18:10:17 +0200109 /* stop hardware - this must stop RX */
Johannes Berg84f6a012009-08-20 20:02:20 +0200110 if (local->open_count)
111 ieee80211_stop_device(local);
Johannes Berg89c3a8a2009-07-28 18:10:17 +0200112
Johannes Berg5bb644a2009-05-17 11:40:42 +0200113 local->suspended = true;
Johannes Berg89c3a8a2009-07-28 18:10:17 +0200114 /* need suspended to be visible before quiescing is false */
115 barrier();
Johannes Berg5bb644a2009-05-17 11:40:42 +0200116 local->quiescing = false;
Bob Copelande874e652009-01-24 13:21:14 -0500117
Bob Copeland665af4f2009-01-19 11:20:53 -0500118 return 0;
119}
120
Johannes Bergf2753dd2009-04-14 10:09:24 +0200121/*
122 * __ieee80211_resume() is a static inline which just calls
123 * ieee80211_reconfig(), which is also needed for hardware
124 * hang/firmware failure/etc. recovery.
125 */