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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
Johannes Bergeecc4802011-05-04 15:37:29 +02009int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
Bob Copeland665af4f2009-01-19 11:20:53 -050010{
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 Berg94f9b972011-07-14 16:48:54 +020015 if (!local->open_count)
16 goto suspend;
17
Stanislaw Gruszka4136c422010-10-06 11:22:10 +020018 ieee80211_scan_cancel(local);
Johannes Berg5bb644a2009-05-17 11:40:42 +020019
Simon Wunderlich164eb022013-02-08 18:16:20 +010020 ieee80211_dfs_cac_cancel(local);
21
Johannes Bergc8f994e2013-03-27 22:49:19 +010022 ieee80211_roc_purge(local, NULL);
23
Johannes Berg3c3e21e2013-03-27 23:20:27 +010024 ieee80211_del_virtual_monitor(local);
25
Johannes Bergca45de72011-04-21 13:38:00 +020026 if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
27 mutex_lock(&local->sta_mtx);
28 list_for_each_entry(sta, &local->sta_list, list) {
Johannes Bergc2c98fd2011-09-29 16:04:36 +020029 set_sta_flag(sta, WLAN_STA_BLOCK_BA);
Johannes Bergc82c4a82012-07-18 13:31:31 +020030 ieee80211_sta_tear_down_BA_sessions(
31 sta, AGG_STOP_LOCAL_REQUEST);
Johannes Bergca45de72011-04-21 13:38:00 +020032 }
33 mutex_unlock(&local->sta_mtx);
34 }
35
Johannes Berg25420602009-03-13 11:43:36 +010036 ieee80211_stop_queues_by_reason(hw,
Johannes Berg445ea4e2013-02-13 12:25:28 +010037 IEEE80211_MAX_QUEUE_MAP,
38 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
Johannes Berg25420602009-03-13 11:43:36 +010039
Johannes Bergd34ba212013-12-04 22:46:11 +010040 /* flush out all packets */
Bob Copeland8ceb5952013-04-18 18:26:49 -040041 synchronize_net();
Johannes Berg5bb644a2009-05-17 11:40:42 +020042
Johannes Berg39ecc012013-02-13 12:11:00 +010043 ieee80211_flush_queues(local, NULL);
Johannes Bergca45de72011-04-21 13:38:00 +020044
Johannes Berg5bb644a2009-05-17 11:40:42 +020045 local->quiescing = true;
46 /* make quiescing visible to timers everywhere */
47 mb();
48
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -040049 flush_workqueue(local->workqueue);
Bob Copeland665af4f2009-01-19 11:20:53 -050050
Johannes Berg5bb644a2009-05-17 11:40:42 +020051 /* Don't try to run timers while suspended. */
52 del_timer_sync(&local->sta_cleanup);
53
54 /*
55 * Note that this particular timer doesn't need to be
56 * restarted at resume.
57 */
58 cancel_work_sync(&local->dynamic_ps_enable_work);
59 del_timer_sync(&local->dynamic_ps_timer);
60
Johannes Bergeecc4802011-05-04 15:37:29 +020061 local->wowlan = wowlan && local->open_count;
62 if (local->wowlan) {
63 int err = drv_suspend(local, wowlan);
Johannes Berg2b4562d2011-07-02 00:02:01 +020064 if (err < 0) {
Johannes Bergeecc4802011-05-04 15:37:29 +020065 local->quiescing = false;
Pontus Fuchs3b08cf62012-05-31 12:34:47 +020066 local->wowlan = false;
Eyal Shapira9ea4fa12012-06-20 13:10:14 +030067 if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
68 mutex_lock(&local->sta_mtx);
69 list_for_each_entry(sta,
70 &local->sta_list, list) {
71 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
72 }
73 mutex_unlock(&local->sta_mtx);
74 }
75 ieee80211_wake_queues_by_reason(hw,
Johannes Berg445ea4e2013-02-13 12:25:28 +010076 IEEE80211_MAX_QUEUE_MAP,
Eyal Shapira9ea4fa12012-06-20 13:10:14 +030077 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
Johannes Bergeecc4802011-05-04 15:37:29 +020078 return err;
Johannes Berg2b4562d2011-07-02 00:02:01 +020079 } else if (err > 0) {
80 WARN_ON(err != 1);
Stanislaw Gruszka81256962013-02-28 10:55:25 +010081 return err;
Johannes Berg2b4562d2011-07-02 00:02:01 +020082 } else {
Johannes Berg2b4562d2011-07-02 00:02:01 +020083 goto suspend;
Johannes Bergeecc4802011-05-04 15:37:29 +020084 }
Johannes Bergeecc4802011-05-04 15:37:29 +020085 }
86
Johannes Berg2a419052010-06-10 10:21:29 +020087 /* tear down aggregation sessions and remove STAs */
88 mutex_lock(&local->sta_mtx);
89 list_for_each_entry(sta, &local->sta_list, list) {
Johannes Bergf09603a2012-01-20 13:55:21 +010090 if (sta->uploaded) {
91 enum ieee80211_sta_state state;
92
Johannes Bergf09603a2012-01-20 13:55:21 +010093 state = sta->sta_state;
94 for (; state > IEEE80211_STA_NOTEXIST; state--)
Jakub Kicinski9d88c7f2012-02-23 02:17:48 +010095 WARN_ON(drv_sta_state(local, sta->sdata, sta,
Johannes Bergf09603a2012-01-20 13:55:21 +010096 state, state - 1));
97 }
Bob Copeland665af4f2009-01-19 11:20:53 -050098 }
Johannes Berg34e89502010-02-03 13:59:58 +010099 mutex_unlock(&local->sta_mtx);
Bob Copeland665af4f2009-01-19 11:20:53 -0500100
Stanislaw Gruszkacd34f642013-07-23 13:56:50 +0200101 /* remove all interfaces that were created in the driver */
Bob Copeland665af4f2009-01-19 11:20:53 -0500102 list_for_each_entry(sdata, &local->interfaces, list) {
Stanislaw Gruszkacd34f642013-07-23 13:56:50 +0200103 if (!ieee80211_sdata_running(sdata) ||
104 sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
105 sdata->vif.type == NL80211_IFTYPE_MONITOR)
Johannes Berg5bb644a2009-05-17 11:40:42 +0200106 continue;
Stanislaw Gruszkacd34f642013-07-23 13:56:50 +0200107
Johannes Berg7b7eab62011-11-03 14:41:13 +0100108 drv_remove_interface(local, sdata);
Bob Copeland665af4f2009-01-19 11:20:53 -0500109 }
110
Stanislaw Gruszka12e7f512013-02-28 10:55:26 +0100111 /*
112 * We disconnected on all interfaces before suspend, all channel
113 * contexts should be released.
114 */
115 WARN_ON(!list_empty(&local->chanctx_list));
Johannes Berg4b6f1dd2012-04-03 14:35:57 +0200116
Johannes Berg89c3a8a2009-07-28 18:10:17 +0200117 /* stop hardware - this must stop RX */
Johannes Berg84f6a012009-08-20 20:02:20 +0200118 if (local->open_count)
119 ieee80211_stop_device(local);
Johannes Berg89c3a8a2009-07-28 18:10:17 +0200120
Johannes Bergeecc4802011-05-04 15:37:29 +0200121 suspend:
Johannes Berg5bb644a2009-05-17 11:40:42 +0200122 local->suspended = true;
Johannes Berg89c3a8a2009-07-28 18:10:17 +0200123 /* need suspended to be visible before quiescing is false */
124 barrier();
Johannes Berg5bb644a2009-05-17 11:40:42 +0200125 local->quiescing = false;
Bob Copelande874e652009-01-24 13:21:14 -0500126
Bob Copeland665af4f2009-01-19 11:20:53 -0500127 return 0;
128}
129
Johannes Bergf2753dd2009-04-14 10:09:24 +0200130/*
131 * __ieee80211_resume() is a static inline which just calls
132 * ieee80211_reconfig(), which is also needed for hardware
133 * hang/firmware failure/etc. recovery.
134 */
Johannes Bergcd8f7cb2013-01-22 12:34:29 +0100135
136void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif,
137 struct cfg80211_wowlan_wakeup *wakeup,
138 gfp_t gfp)
139{
140 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
141
142 cfg80211_report_wowlan_wakeup(&sdata->wdev, wakeup, gfp);
143}
144EXPORT_SYMBOL(ieee80211_report_wowlan_wakeup);