#include <net/mac80211.h> #include <net/rtnetlink.h> #include "ieee80211_i.h" #include "mesh.h" #include "driver-ops.h" #include "led.h" int __ieee80211_suspend(struct ieee80211_hw *hw) { struct ieee80211_local *local = hw_to_local(hw); struct ieee80211_sub_if_data *sdata; struct ieee80211_if_init_conf conf; struct sta_info *sta; unsigned long flags; ieee80211_scan_cancel(local); ieee80211_stop_queues_by_reason(hw, IEEE80211_QUEUE_STOP_REASON_SUSPEND); /* flush out all packets */ synchronize_net(); local->quiescing = true; /* make quiescing visible to timers everywhere */ mb(); flush_workqueue(local->workqueue); /* Don't try to run timers while suspended. */ del_timer_sync(&local->sta_cleanup); /* * Note that this particular timer doesn't need to be * restarted at resume. */ cancel_work_sync(&local->dynamic_ps_enable_work); del_timer_sync(&local->dynamic_ps_timer); /* disable keys */ list_for_each_entry(sdata, &local->interfaces, list) ieee80211_disable_keys(sdata); /* Tear down aggregation sessions */ rcu_read_lock(); if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { list_for_each_entry_rcu(sta, &local->sta_list, list) { set_sta_flags(sta, WLAN_STA_SUSPEND); ieee80211_sta_tear_down_BA_sessions(sta); } } rcu_read_unlock(); /* remove STAs */ spin_lock_irqsave(&local->sta_lock, flags); list_for_each_entry(sta, &local->sta_list, list) { if (local->ops->sta_notify) { sdata = sta->sdata; if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, u.ap); drv_sta_notify(local, &sdata->vif, STA_NOTIFY_REMOVE, &sta->sta); } mesh_plink_quiesce(sta); } spin_unlock_irqrestore(&local->sta_lock, flags); /* remove all interfaces */ list_for_each_entry(sdata, &local->interfaces, list) { switch(sdata->vif.type) { case NL80211_IFTYPE_STATION: ieee80211_sta_quiesce(sdata); break; case NL80211_IFTYPE_ADHOC: ieee80211_ibss_quiesce(sdata); break; case NL80211_IFTYPE_MESH_POINT: ieee80211_mesh_quiesce(sdata); break; case NL80211_IFTYPE_AP_VLAN: case NL80211_IFTYPE_MONITOR: /* don't tell driver about this */ continue; default: break; } if (!netif_running(sdata->dev)) continue; /* disable beaconing */ ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); conf.vif = &sdata->vif; conf.type = sdata->vif.type; conf.mac_addr = sdata->dev->dev_addr; drv_remove_interface(local, &conf); } /* stop hardware - this must stop RX */ if (local->open_count) ieee80211_stop_device(local); local->suspended = true; /* need suspended to be visible before quiescing is false */ barrier(); local->quiescing = false; return 0; } /* * __ieee80211_resume() is a static inline which just calls * ieee80211_reconfig(), which is also needed for hardware * hang/firmware failure/etc. recovery. */