| #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 cfg80211_wowlan *wowlan) |
| { |
| struct ieee80211_local *local = hw_to_local(hw); |
| struct ieee80211_sub_if_data *sdata; |
| struct sta_info *sta; |
| |
| if (!local->open_count) |
| goto suspend; |
| |
| ieee80211_scan_cancel(local); |
| |
| ieee80211_dfs_cac_cancel(local); |
| |
| ieee80211_roc_purge(local, NULL); |
| |
| if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
| mutex_lock(&local->sta_mtx); |
| list_for_each_entry(sta, &local->sta_list, list) { |
| set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
| ieee80211_sta_tear_down_BA_sessions( |
| sta, AGG_STOP_LOCAL_REQUEST); |
| } |
| mutex_unlock(&local->sta_mtx); |
| } |
| |
| ieee80211_stop_queues_by_reason(hw, |
| IEEE80211_MAX_QUEUE_MAP, |
| IEEE80211_QUEUE_STOP_REASON_SUSPEND); |
| |
| /* flush out all packets */ |
| synchronize_net(); |
| |
| ieee80211_flush_queues(local, NULL); |
| |
| 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); |
| |
| local->wowlan = wowlan && local->open_count; |
| if (local->wowlan) { |
| int err = drv_suspend(local, wowlan); |
| if (err < 0) { |
| local->quiescing = false; |
| local->wowlan = false; |
| if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { |
| mutex_lock(&local->sta_mtx); |
| list_for_each_entry(sta, |
| &local->sta_list, list) { |
| clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
| } |
| mutex_unlock(&local->sta_mtx); |
| } |
| ieee80211_wake_queues_by_reason(hw, |
| IEEE80211_MAX_QUEUE_MAP, |
| IEEE80211_QUEUE_STOP_REASON_SUSPEND); |
| return err; |
| } else if (err > 0) { |
| WARN_ON(err != 1); |
| return err; |
| } else { |
| goto suspend; |
| } |
| } |
| |
| /* tear down aggregation sessions and remove STAs */ |
| mutex_lock(&local->sta_mtx); |
| list_for_each_entry(sta, &local->sta_list, list) { |
| if (sta->uploaded) { |
| enum ieee80211_sta_state state; |
| |
| state = sta->sta_state; |
| for (; state > IEEE80211_STA_NOTEXIST; state--) |
| WARN_ON(drv_sta_state(local, sta->sdata, sta, |
| state, state - 1)); |
| } |
| } |
| mutex_unlock(&local->sta_mtx); |
| |
| /* remove all interfaces */ |
| list_for_each_entry(sdata, &local->interfaces, list) { |
| if (!ieee80211_sdata_running(sdata)) |
| continue; |
| drv_remove_interface(local, sdata); |
| } |
| |
| sdata = rtnl_dereference(local->monitor_sdata); |
| if (sdata) |
| drv_remove_interface(local, sdata); |
| |
| /* |
| * We disconnected on all interfaces before suspend, all channel |
| * contexts should be released. |
| */ |
| WARN_ON(!list_empty(&local->chanctx_list)); |
| |
| /* stop hardware - this must stop RX */ |
| if (local->open_count) |
| ieee80211_stop_device(local); |
| |
| suspend: |
| 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. |
| */ |
| |
| void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif, |
| struct cfg80211_wowlan_wakeup *wakeup, |
| gfp_t gfp) |
| { |
| struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
| |
| cfg80211_report_wowlan_wakeup(&sdata->wdev, wakeup, gfp); |
| } |
| EXPORT_SYMBOL(ieee80211_report_wowlan_wakeup); |