Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) #include <net/mac80211.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) #include <net/rtnetlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) #include "ieee80211_i.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #include "mesh.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include "driver-ops.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include "led.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) static void ieee80211_sched_scan_cancel(struct ieee80211_local *local)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 	if (ieee80211_request_sched_scan_stop(local))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 	cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	struct ieee80211_local *local = hw_to_local(hw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	struct ieee80211_sub_if_data *sdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	struct sta_info *sta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	if (!local->open_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 		goto suspend;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	ieee80211_scan_cancel(local);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	ieee80211_dfs_cac_cancel(local);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	ieee80211_roc_purge(local, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	ieee80211_del_virtual_monitor(local);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	if (ieee80211_hw_check(hw, AMPDU_AGGREGATION) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	    !(wowlan && wowlan->any)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 		mutex_lock(&local->sta_mtx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 		list_for_each_entry(sta, &local->sta_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 			set_sta_flag(sta, WLAN_STA_BLOCK_BA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 			ieee80211_sta_tear_down_BA_sessions(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 					sta, AGG_STOP_LOCAL_REQUEST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		mutex_unlock(&local->sta_mtx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	/* keep sched_scan only in case of 'any' trigger */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	if (!(wowlan && wowlan->any))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 		ieee80211_sched_scan_cancel(local);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	ieee80211_stop_queues_by_reason(hw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 					IEEE80211_MAX_QUEUE_MAP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 					IEEE80211_QUEUE_STOP_REASON_SUSPEND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 					false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	/* flush out all packets */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	synchronize_net();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	ieee80211_flush_queues(local, NULL, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	local->quiescing = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	/* make quiescing visible to timers everywhere */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	mb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	flush_workqueue(local->workqueue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	/* Don't try to run timers while suspended. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	del_timer_sync(&local->sta_cleanup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	 /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	 * Note that this particular timer doesn't need to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	 * restarted at resume.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	cancel_work_sync(&local->dynamic_ps_enable_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	del_timer_sync(&local->dynamic_ps_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	local->wowlan = wowlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	if (local->wowlan) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		/* Drivers don't expect to suspend while some operations like
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		 * authenticating or associating are in progress. It doesn't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		 * make sense anyway to accept that, since the authentication
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		 * or association would never finish since the driver can't do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		 * that on its own.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		 * Thus, clean up in-progress auth/assoc first.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		list_for_each_entry(sdata, &local->interfaces, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			if (!ieee80211_sdata_running(sdata))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 				continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 			if (sdata->vif.type != NL80211_IFTYPE_STATION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 				continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 			ieee80211_mgd_quiesce(sdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 			/* If suspended during TX in progress, and wowlan
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 			 * is enabled (connection will be active) there
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 			 * can be a race where the driver is put out
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 			 * of power-save due to TX and during suspend
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 			 * dynamic_ps_timer is cancelled and TX packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 			 * is flushed, leaving the driver in ACTIVE even
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 			 * after resuming until dynamic_ps_timer puts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 			 * driver back in DOZE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 			 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 			if (sdata->u.mgd.associated &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 			    sdata->u.mgd.powersave &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 			     !(local->hw.conf.flags & IEEE80211_CONF_PS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 				local->hw.conf.flags |= IEEE80211_CONF_PS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 				ieee80211_hw_config(local,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 						    IEEE80211_CONF_CHANGE_PS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		err = drv_suspend(local, wowlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 			local->quiescing = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 			local->wowlan = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 			if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 				mutex_lock(&local->sta_mtx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 				list_for_each_entry(sta,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 						    &local->sta_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 					clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 				}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 				mutex_unlock(&local->sta_mtx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 			ieee80211_wake_queues_by_reason(hw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 					IEEE80211_MAX_QUEUE_MAP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 					IEEE80211_QUEUE_STOP_REASON_SUSPEND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 					false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		} else if (err > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 			WARN_ON(err != 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 			/* cfg80211 will call back into mac80211 to disconnect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 			 * all interfaces, allow that to proceed properly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 			 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 			ieee80211_wake_queues_by_reason(hw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 					IEEE80211_MAX_QUEUE_MAP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 					IEEE80211_QUEUE_STOP_REASON_SUSPEND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 					false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 			goto suspend;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	/* remove all interfaces that were created in the driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	list_for_each_entry(sdata, &local->interfaces, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		if (!ieee80211_sdata_running(sdata))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		switch (sdata->vif.type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		case NL80211_IFTYPE_AP_VLAN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		case NL80211_IFTYPE_MONITOR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		case NL80211_IFTYPE_STATION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 			ieee80211_mgd_quiesce(sdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		case NL80211_IFTYPE_WDS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 			/* tear down aggregation sessions and remove STAs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 			mutex_lock(&local->sta_mtx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 			sta = sdata->u.wds.sta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 			if (sta && sta->uploaded) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 				enum ieee80211_sta_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 				state = sta->sta_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 				for (; state > IEEE80211_STA_NOTEXIST; state--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 					WARN_ON(drv_sta_state(local, sta->sdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 							      sta, state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 							      state - 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 			mutex_unlock(&local->sta_mtx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		flush_delayed_work(&sdata->dec_tailroom_needed_wk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		drv_remove_interface(local, sdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	 * We disconnected on all interfaces before suspend, all channel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	 * contexts should be released.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	WARN_ON(!list_empty(&local->chanctx_list));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	/* stop hardware - this must stop RX */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	ieee80211_stop_device(local);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)  suspend:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	local->suspended = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	/* need suspended to be visible before quiescing is false */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	barrier();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	local->quiescing = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)  * __ieee80211_resume() is a static inline which just calls
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)  * ieee80211_reconfig(), which is also needed for hardware
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)  * hang/firmware failure/etc. recovery.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 				    struct cfg80211_wowlan_wakeup *wakeup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 				    gfp_t gfp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	cfg80211_report_wowlan_wakeup(&sdata->wdev, wakeup, gfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) EXPORT_SYMBOL(ieee80211_report_wowlan_wakeup);