2009-01-19 21:50:53 +05:30
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#include <net/mac80211.h>
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#include <net/rtnetlink.h>
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#include "ieee80211_i.h"
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2009-05-17 15:10:42 +05:30
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#include "mesh.h"
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2009-04-23 22:22:52 +05:30
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#include "driver-ops.h"
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2009-01-19 21:50:53 +05:30
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#include "led.h"
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2011-05-04 19:07:29 +05:30
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int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
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2009-01-19 21:50:53 +05:30
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{
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struct ieee80211_local *local = hw_to_local(hw);
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struct ieee80211_sub_if_data *sdata;
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struct sta_info *sta;
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2011-07-14 20:18:54 +05:30
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if (!local->open_count)
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goto suspend;
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2010-10-06 14:52:10 +05:30
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ieee80211_scan_cancel(local);
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2009-05-17 15:10:42 +05:30
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2013-02-08 22:46:20 +05:30
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ieee80211_dfs_cac_cancel(local);
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2013-03-28 03:19:19 +05:30
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ieee80211_roc_purge(local, NULL);
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2013-03-28 03:50:27 +05:30
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ieee80211_del_virtual_monitor(local);
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2011-04-21 17:08:00 +05:30
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if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
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mutex_lock(&local->sta_mtx);
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list_for_each_entry(sta, &local->sta_list, list) {
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2011-09-29 19:34:36 +05:30
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set_sta_flag(sta, WLAN_STA_BLOCK_BA);
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2012-07-18 17:01:31 +05:30
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ieee80211_sta_tear_down_BA_sessions(
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sta, AGG_STOP_LOCAL_REQUEST);
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2011-04-21 17:08:00 +05:30
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}
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mutex_unlock(&local->sta_mtx);
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}
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2009-03-13 16:13:36 +05:30
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ieee80211_stop_queues_by_reason(hw,
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2013-02-13 16:55:28 +05:30
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IEEE80211_MAX_QUEUE_MAP,
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IEEE80211_QUEUE_STOP_REASON_SUSPEND);
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2009-03-13 16:13:36 +05:30
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2013-04-17 14:56:40 +05:30
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/* flush out all packets and station cleanup call_rcu()s */
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2013-04-19 03:56:49 +05:30
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synchronize_net();
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2013-04-17 14:56:40 +05:30
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rcu_barrier();
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2009-05-17 15:10:42 +05:30
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2013-02-13 16:41:00 +05:30
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ieee80211_flush_queues(local, NULL);
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2011-04-21 17:08:00 +05:30
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2009-05-17 15:10:42 +05:30
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local->quiescing = true;
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/* make quiescing visible to timers everywhere */
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mb();
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2009-07-30 05:38:07 +05:30
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flush_workqueue(local->workqueue);
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2009-01-19 21:50:53 +05:30
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2009-05-17 15:10:42 +05:30
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/* Don't try to run timers while suspended. */
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del_timer_sync(&local->sta_cleanup);
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/*
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* Note that this particular timer doesn't need to be
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* restarted at resume.
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*/
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cancel_work_sync(&local->dynamic_ps_enable_work);
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del_timer_sync(&local->dynamic_ps_timer);
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2011-05-04 19:07:29 +05:30
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local->wowlan = wowlan && local->open_count;
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if (local->wowlan) {
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int err = drv_suspend(local, wowlan);
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2011-07-02 03:32:01 +05:30
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if (err < 0) {
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2011-05-04 19:07:29 +05:30
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local->quiescing = false;
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2012-05-31 16:04:47 +05:30
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local->wowlan = false;
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2012-06-20 15:40:14 +05:30
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if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
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mutex_lock(&local->sta_mtx);
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list_for_each_entry(sta,
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&local->sta_list, list) {
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clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
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}
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mutex_unlock(&local->sta_mtx);
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}
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ieee80211_wake_queues_by_reason(hw,
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2013-02-13 16:55:28 +05:30
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IEEE80211_MAX_QUEUE_MAP,
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2012-06-20 15:40:14 +05:30
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IEEE80211_QUEUE_STOP_REASON_SUSPEND);
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2011-05-04 19:07:29 +05:30
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return err;
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2011-07-02 03:32:01 +05:30
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} else if (err > 0) {
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WARN_ON(err != 1);
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2013-02-28 15:25:25 +05:30
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return err;
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2011-07-02 03:32:01 +05:30
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} else {
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goto suspend;
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2011-05-04 19:07:29 +05:30
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}
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}
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2010-06-10 13:51:29 +05:30
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/* tear down aggregation sessions and remove STAs */
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mutex_lock(&local->sta_mtx);
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list_for_each_entry(sta, &local->sta_list, list) {
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2012-01-20 18:25:21 +05:30
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if (sta->uploaded) {
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enum ieee80211_sta_state state;
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state = sta->sta_state;
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for (; state > IEEE80211_STA_NOTEXIST; state--)
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2012-02-23 06:47:48 +05:30
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WARN_ON(drv_sta_state(local, sta->sdata, sta,
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2012-01-20 18:25:21 +05:30
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state, state - 1));
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}
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2009-01-19 21:50:53 +05:30
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}
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2010-02-03 18:29:58 +05:30
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mutex_unlock(&local->sta_mtx);
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2009-01-19 21:50:53 +05:30
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/* remove all interfaces */
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list_for_each_entry(sdata, &local->interfaces, list) {
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2012-12-13 21:17:42 +05:30
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if (!ieee80211_sdata_running(sdata))
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2009-05-17 15:10:42 +05:30
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continue;
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2011-11-03 19:11:13 +05:30
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drv_remove_interface(local, sdata);
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2009-01-19 21:50:53 +05:30
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}
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2009-05-17 15:10:42 +05:30
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2013-02-28 15:25:26 +05:30
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/*
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* We disconnected on all interfaces before suspend, all channel
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* contexts should be released.
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*/
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WARN_ON(!list_empty(&local->chanctx_list));
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2012-04-03 18:05:57 +05:30
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2009-07-28 21:40:17 +05:30
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/* stop hardware - this must stop RX */
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2009-08-20 23:32:20 +05:30
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if (local->open_count)
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ieee80211_stop_device(local);
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2009-07-28 21:40:17 +05:30
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2011-05-04 19:07:29 +05:30
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suspend:
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2009-05-17 15:10:42 +05:30
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local->suspended = true;
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2009-07-28 21:40:17 +05:30
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/* need suspended to be visible before quiescing is false */
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barrier();
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2009-05-17 15:10:42 +05:30
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local->quiescing = false;
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2009-01-19 21:50:53 +05:30
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return 0;
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}
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2009-04-14 13:39:24 +05:30
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/*
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* __ieee80211_resume() is a static inline which just calls
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* ieee80211_reconfig(), which is also needed for hardware
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* hang/firmware failure/etc. recovery.
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*/
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2013-01-22 17:04:29 +05:30
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void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif,
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struct cfg80211_wowlan_wakeup *wakeup,
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gfp_t gfp)
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{
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struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
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cfg80211_report_wowlan_wakeup(&sdata->wdev, wakeup, gfp);
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}
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EXPORT_SYMBOL(ieee80211_report_wowlan_wakeup);
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