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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,
Luciano Coelhocca07b02014-06-13 16:30:05 +030038 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
39 false);
Johannes Berg25420602009-03-13 11:43:36 +010040
Johannes Bergd34ba212013-12-04 22:46:11 +010041 /* flush out all packets */
Bob Copeland8ceb5952013-04-18 18:26:49 -040042 synchronize_net();
Johannes Berg5bb644a2009-05-17 11:40:42 +020043
Emmanuel Grumbach3b24f4c2015-01-07 15:42:39 +020044 ieee80211_flush_queues(local, NULL, true);
Johannes Bergca45de72011-04-21 13:38:00 +020045
Johannes Berg5bb644a2009-05-17 11:40:42 +020046 local->quiescing = true;
47 /* make quiescing visible to timers everywhere */
48 mb();
49
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -040050 flush_workqueue(local->workqueue);
Bob Copeland665af4f2009-01-19 11:20:53 -050051
Johannes Berg5bb644a2009-05-17 11:40:42 +020052 /* Don't try to run timers while suspended. */
53 del_timer_sync(&local->sta_cleanup);
54
55 /*
56 * Note that this particular timer doesn't need to be
57 * restarted at resume.
58 */
59 cancel_work_sync(&local->dynamic_ps_enable_work);
60 del_timer_sync(&local->dynamic_ps_timer);
61
Luciano Coelho8bb6f4b2015-03-01 09:10:07 +020062 local->wowlan = wowlan;
Johannes Bergeecc4802011-05-04 15:37:29 +020063 if (local->wowlan) {
Johannes Bergef7c6722015-03-01 09:10:06 +020064 int err;
65
66 /* Drivers don't expect to suspend while some operations like
67 * authenticating or associating are in progress. It doesn't
68 * make sense anyway to accept that, since the authentication
69 * or association would never finish since the driver can't do
70 * that on its own.
71 * Thus, clean up in-progress auth/assoc first.
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 err = drv_suspend(local, wowlan);
Johannes Berg2b4562d2011-07-02 00:02:01 +020082 if (err < 0) {
Johannes Bergeecc4802011-05-04 15:37:29 +020083 local->quiescing = false;
Pontus Fuchs3b08cf62012-05-31 12:34:47 +020084 local->wowlan = false;
Eyal Shapira9ea4fa12012-06-20 13:10:14 +030085 if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
86 mutex_lock(&local->sta_mtx);
87 list_for_each_entry(sta,
88 &local->sta_list, list) {
89 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
90 }
91 mutex_unlock(&local->sta_mtx);
92 }
93 ieee80211_wake_queues_by_reason(hw,
Johannes Berg445ea4e2013-02-13 12:25:28 +010094 IEEE80211_MAX_QUEUE_MAP,
Luciano Coelhocca07b02014-06-13 16:30:05 +030095 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
96 false);
Johannes Bergeecc4802011-05-04 15:37:29 +020097 return err;
Johannes Berg2b4562d2011-07-02 00:02:01 +020098 } else if (err > 0) {
99 WARN_ON(err != 1);
Johannes Berg23e37092015-03-01 09:10:08 +0200100 /* cfg80211 will call back into mac80211 to disconnect
101 * all interfaces, allow that to proceed properly
102 */
103 ieee80211_wake_queues_by_reason(hw,
104 IEEE80211_MAX_QUEUE_MAP,
105 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
106 false);
Stanislaw Gruszka81256962013-02-28 10:55:25 +0100107 return err;
Johannes Berg2b4562d2011-07-02 00:02:01 +0200108 } else {
Johannes Berg2b4562d2011-07-02 00:02:01 +0200109 goto suspend;
Johannes Bergeecc4802011-05-04 15:37:29 +0200110 }
Johannes Bergeecc4802011-05-04 15:37:29 +0200111 }
112
Stanislaw Gruszkacd34f642013-07-23 13:56:50 +0200113 /* remove all interfaces that were created in the driver */
Bob Copeland665af4f2009-01-19 11:20:53 -0500114 list_for_each_entry(sdata, &local->interfaces, list) {
Johannes Berg1a1cb742014-03-19 09:55:55 +0100115 if (!ieee80211_sdata_running(sdata))
Johannes Berg5bb644a2009-05-17 11:40:42 +0200116 continue;
Johannes Berg1a1cb742014-03-19 09:55:55 +0100117 switch (sdata->vif.type) {
118 case NL80211_IFTYPE_AP_VLAN:
119 case NL80211_IFTYPE_MONITOR:
120 continue;
121 case NL80211_IFTYPE_STATION:
122 ieee80211_mgd_quiesce(sdata);
123 break;
Luciano Coelho2af81d62015-01-21 22:19:34 +0200124 case NL80211_IFTYPE_WDS:
125 /* tear down aggregation sessions and remove STAs */
126 mutex_lock(&local->sta_mtx);
127 sta = sdata->u.wds.sta;
128 if (sta && sta->uploaded) {
129 enum ieee80211_sta_state state;
130
131 state = sta->sta_state;
132 for (; state > IEEE80211_STA_NOTEXIST; state--)
133 WARN_ON(drv_sta_state(local, sta->sdata,
134 sta, state,
135 state - 1));
136 }
137 mutex_unlock(&local->sta_mtx);
138 break;
Johannes Berg1a1cb742014-03-19 09:55:55 +0100139 default:
140 break;
141 }
Stanislaw Gruszkacd34f642013-07-23 13:56:50 +0200142
Johannes Berg7b7eab62011-11-03 14:41:13 +0100143 drv_remove_interface(local, sdata);
Bob Copeland665af4f2009-01-19 11:20:53 -0500144 }
145
Stanislaw Gruszka12e7f512013-02-28 10:55:26 +0100146 /*
147 * We disconnected on all interfaces before suspend, all channel
148 * contexts should be released.
149 */
150 WARN_ON(!list_empty(&local->chanctx_list));
Johannes Berg4b6f1dd2012-04-03 14:35:57 +0200151
Johannes Berg89c3a8a2009-07-28 18:10:17 +0200152 /* stop hardware - this must stop RX */
Johannes Berg84f6a012009-08-20 20:02:20 +0200153 if (local->open_count)
154 ieee80211_stop_device(local);
Johannes Berg89c3a8a2009-07-28 18:10:17 +0200155
Johannes Bergeecc4802011-05-04 15:37:29 +0200156 suspend:
Johannes Berg5bb644a2009-05-17 11:40:42 +0200157 local->suspended = true;
Johannes Berg89c3a8a2009-07-28 18:10:17 +0200158 /* need suspended to be visible before quiescing is false */
159 barrier();
Johannes Berg5bb644a2009-05-17 11:40:42 +0200160 local->quiescing = false;
Bob Copelande874e652009-01-24 13:21:14 -0500161
Bob Copeland665af4f2009-01-19 11:20:53 -0500162 return 0;
163}
164
Johannes Bergf2753dd2009-04-14 10:09:24 +0200165/*
166 * __ieee80211_resume() is a static inline which just calls
167 * ieee80211_reconfig(), which is also needed for hardware
168 * hang/firmware failure/etc. recovery.
169 */
Johannes Bergcd8f7cb2013-01-22 12:34:29 +0100170
171void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif,
172 struct cfg80211_wowlan_wakeup *wakeup,
173 gfp_t gfp)
174{
175 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
176
177 cfg80211_report_wowlan_wakeup(&sdata->wdev, wakeup, gfp);
178}
179EXPORT_SYMBOL(ieee80211_report_wowlan_wakeup);