SAFE public projects git trees. - safe/jmp/linux-2.6/blob - net/mac80211/pm.c

   1 #include <net/mac80211.h>
   2 #include <net/rtnetlink.h>
   3
   4 #include "ieee80211_i.h"
   5 #include "led.h"
   6
   7 int __ieee80211_suspend(struct ieee80211_hw *hw)
   8 {
   9         struct ieee80211_local *local = hw_to_local(hw);
  10         struct ieee80211_sub_if_data *sdata;
  11         struct ieee80211_if_init_conf conf;
  12         struct sta_info *sta;
  13         unsigned long flags;
  14
  15         ieee80211_stop_queues_by_reason(hw,
  16                         IEEE80211_QUEUE_STOP_REASON_SUSPEND);
  17
  18         flush_workqueue(local->hw.workqueue);
  19
  20         /* disable keys */
  21         list_for_each_entry(sdata, &local->interfaces, list)
  22                 ieee80211_disable_keys(sdata);
  23
  24         /* Tear down aggregation sessions */
  25
  26         rcu_read_lock();
  27
  28         if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
  29                 list_for_each_entry_rcu(sta, &local->sta_list, list) {
  30                         set_sta_flags(sta, WLAN_STA_SUSPEND);
  31                         ieee80211_sta_tear_down_BA_sessions(sta);
  32                 }
  33         }
  34
  35         rcu_read_unlock();
  36
  37         /* remove STAs */
  38         if (local->ops->sta_notify) {
  39                 spin_lock_irqsave(&local->sta_lock, flags);
  40                 list_for_each_entry(sta, &local->sta_list, list) {
  41                         if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
  42                                 sdata = container_of(sdata->bss,
  43                                              struct ieee80211_sub_if_data,
  44                                              u.ap);
  45
  46                         local->ops->sta_notify(hw, &sdata->vif,
  47                                 STA_NOTIFY_REMOVE, &sta->sta);
  48                 }
  49                 spin_unlock_irqrestore(&local->sta_lock, flags);
  50         }
  51
  52         /* remove all interfaces */
  53         list_for_each_entry(sdata, &local->interfaces, list) {
  54                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
  55                     sdata->vif.type != NL80211_IFTYPE_MONITOR &&
  56                     netif_running(sdata->dev)) {
  57                         conf.vif = &sdata->vif;
  58                         conf.type = sdata->vif.type;
  59                         conf.mac_addr = sdata->dev->dev_addr;
  60                         local->ops->remove_interface(hw, &conf);
  61                 }
  62         }
  63
  64         /* flush again, in case driver queued work */
  65         flush_workqueue(local->hw.workqueue);
  66
  67         /* stop hardware */
  68         if (local->open_count) {
  69                 ieee80211_led_radio(local, false);
  70                 local->ops->stop(hw);
  71         }
  72         return 0;
  73 }
  74
  75 /*
  76  * __ieee80211_resume() is a static inline which just calls
  77  * ieee80211_reconfig(), which is also needed for hardware
  78  * hang/firmware failure/etc. recovery.
  79  */