1 #include <net/mac80211.h> 2 #include <net/rtnetlink.h> 3 4 #include "ieee80211_i.h" 5 #include "mesh.h" 6 #include "driver-ops.h" 7 #include "led.h" 8 9 int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 10 { 11 struct ieee80211_local *local = hw_to_local(hw); 12 struct ieee80211_sub_if_data *sdata; 13 struct sta_info *sta; 14 15 if (!local->open_count) 16 goto suspend; 17 18 ieee80211_scan_cancel(local); 19 20 ieee80211_dfs_cac_cancel(local); 21 22 ieee80211_roc_purge(local, NULL); 23 24 ieee80211_del_virtual_monitor(local); 25 26 if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { 27 mutex_lock(&local->sta_mtx); 28 list_for_each_entry(sta, &local->sta_list, list) { 29 set_sta_flag(sta, WLAN_STA_BLOCK_BA); 30 ieee80211_sta_tear_down_BA_sessions( 31 sta, AGG_STOP_LOCAL_REQUEST); 32 } 33 mutex_unlock(&local->sta_mtx); 34 } 35 36 ieee80211_stop_queues_by_reason(hw, 37 IEEE80211_MAX_QUEUE_MAP, 38 IEEE80211_QUEUE_STOP_REASON_SUSPEND); 39 40 /* flush out all packets */ 41 synchronize_net(); 42 43 ieee80211_flush_queues(local, NULL); 44 45 local->quiescing = true; 46 /* make quiescing visible to timers everywhere */ 47 mb(); 48 49 flush_workqueue(local->workqueue); 50 51 /* Don't try to run timers while suspended. */ 52 del_timer_sync(&local->sta_cleanup); 53 54 /* 55 * Note that this particular timer doesn't need to be 56 * restarted at resume. 57 */ 58 cancel_work_sync(&local->dynamic_ps_enable_work); 59 del_timer_sync(&local->dynamic_ps_timer); 60 61 local->wowlan = wowlan && local->open_count; 62 if (local->wowlan) { 63 int err = drv_suspend(local, wowlan); 64 if (err < 0) { 65 local->quiescing = false; 66 local->wowlan = false; 67 if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { 68 mutex_lock(&local->sta_mtx); 69 list_for_each_entry(sta, 70 &local->sta_list, list) { 71 clear_sta_flag(sta, WLAN_STA_BLOCK_BA); 72 } 73 mutex_unlock(&local->sta_mtx); 74 } 75 ieee80211_wake_queues_by_reason(hw, 76 IEEE80211_MAX_QUEUE_MAP, 77 IEEE80211_QUEUE_STOP_REASON_SUSPEND); 78 return err; 79 } else if (err > 0) { 80 WARN_ON(err != 1); 81 return err; 82 } else { 83 goto suspend; 84 } 85 } 86 87 /* tear down aggregation sessions and remove STAs */ 88 mutex_lock(&local->sta_mtx); 89 list_for_each_entry(sta, &local->sta_list, list) { 90 if (sta->uploaded) { 91 enum ieee80211_sta_state state; 92 93 state = sta->sta_state; 94 for (; state > IEEE80211_STA_NOTEXIST; state--) 95 WARN_ON(drv_sta_state(local, sta->sdata, sta, 96 state, state - 1)); 97 } 98 } 99 mutex_unlock(&local->sta_mtx); 100 101 /* remove all interfaces that were created in the driver */ 102 list_for_each_entry(sdata, &local->interfaces, list) { 103 if (!ieee80211_sdata_running(sdata) || 104 sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 105 sdata->vif.type == NL80211_IFTYPE_MONITOR) 106 continue; 107 108 drv_remove_interface(local, sdata); 109 } 110 111 /* 112 * We disconnected on all interfaces before suspend, all channel 113 * contexts should be released. 114 */ 115 WARN_ON(!list_empty(&local->chanctx_list)); 116 117 /* stop hardware - this must stop RX */ 118 if (local->open_count) 119 ieee80211_stop_device(local); 120 121 suspend: 122 local->suspended = true; 123 /* need suspended to be visible before quiescing is false */ 124 barrier(); 125 local->quiescing = false; 126 127 return 0; 128 } 129 130 /* 131 * __ieee80211_resume() is a static inline which just calls 132 * ieee80211_reconfig(), which is also needed for hardware 133 * hang/firmware failure/etc. recovery. 134 */ 135 136 void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif, 137 struct cfg80211_wowlan_wakeup *wakeup, 138 gfp_t gfp) 139 { 140 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 141 142 cfg80211_report_wowlan_wakeup(&sdata->wdev, wakeup, gfp); 143 } 144 EXPORT_SYMBOL(ieee80211_report_wowlan_wakeup); 145