32 void ieee80211_rx_bss_put(struct ieee80211_local *local,  in ieee80211_rx_bss_put()  argument
37 	cfg80211_put_bss(local->hw.wiphy,  in ieee80211_rx_bss_put()
59 ieee80211_bss_info_update(struct ieee80211_local *local,  in ieee80211_bss_info_update()  argument
72 	if (ieee80211_hw_check(&local->hw, SIGNAL_DBM))  in ieee80211_bss_info_update()
74 	else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC))  in ieee80211_bss_info_update()
75 		bss_meta.signal = (rx_status->signal * 100) / local->hw.max_signal;  in ieee80211_bss_info_update()
84 	cbss = cfg80211_inform_bss_frame_data(local->hw.wiphy, &bss_meta,  in ieee80211_bss_info_update()
90 		<= local->hw.wiphy->max_adj_channel_rssi_comp;  in ieee80211_bss_info_update()
158 			local->hw.wiphy->bands[rx_status->band];  in ieee80211_bss_info_update()
168 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb)  in ieee80211_scan_rx()  argument
184 	sdata1 = rcu_dereference(local->scan_sdata);  in ieee80211_scan_rx()
185 	sdata2 = rcu_dereference(local->sched_scan_sdata);  in ieee80211_scan_rx()
194 		scan_req = rcu_dereference(local->scan_req);  in ieee80211_scan_rx()
195 		sched_scan_req = rcu_dereference(local->sched_scan_req);  in ieee80211_scan_rx()
220 	channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);  in ieee80211_scan_rx()
225 	bss = ieee80211_bss_info_update(local, rx_status,  in ieee80211_scan_rx()
229 		ieee80211_rx_bss_put(local, bss);  in ieee80211_scan_rx()
251 static bool ieee80211_prep_hw_scan(struct ieee80211_local *local)  in ieee80211_prep_hw_scan()  argument
258 	req = rcu_dereference_protected(local->scan_req,  in ieee80211_prep_hw_scan()
259 					lockdep_is_held(&local->mtx));  in ieee80211_prep_hw_scan()
261 	if (test_bit(SCAN_HW_CANCELLED, &local->scanning))  in ieee80211_prep_hw_scan()
264 	if (ieee80211_hw_check(&local->hw, SINGLE_SCAN_ON_ALL_BANDS)) {  in ieee80211_prep_hw_scan()
266 			local->hw_scan_req->req.channels[i] = req->channels[i];  in ieee80211_prep_hw_scan()
273 			if (local->hw_scan_band == IEEE80211_NUM_BANDS)  in ieee80211_prep_hw_scan()
280 				    local->hw_scan_band)  in ieee80211_prep_hw_scan()
282 				local->hw_scan_req->req.channels[n_chans] =  in ieee80211_prep_hw_scan()
288 			local->hw_scan_band++;  in ieee80211_prep_hw_scan()
292 	local->hw_scan_req->req.n_channels = n_chans;  in ieee80211_prep_hw_scan()
295 	ielen = ieee80211_build_preq_ies(local,  in ieee80211_prep_hw_scan()
296 					 (u8 *)local->hw_scan_req->req.ie,  in ieee80211_prep_hw_scan()
297 					 local->hw_scan_ies_bufsize,  in ieee80211_prep_hw_scan()
298 					 &local->hw_scan_req->ies,  in ieee80211_prep_hw_scan()
301 	local->hw_scan_req->req.ie_len = ielen;  in ieee80211_prep_hw_scan()
302 	local->hw_scan_req->req.no_cck = req->no_cck;  in ieee80211_prep_hw_scan()
303 	ether_addr_copy(local->hw_scan_req->req.mac_addr, req->mac_addr);  in ieee80211_prep_hw_scan()
304 	ether_addr_copy(local->hw_scan_req->req.mac_addr_mask,  in ieee80211_prep_hw_scan()
312 	struct ieee80211_local *local = hw_to_local(hw);  in __ieee80211_scan_completed()  local
313 	bool hw_scan = local->ops->hw_scan;  in __ieee80211_scan_completed()
314 	bool was_scanning = local->scanning;  in __ieee80211_scan_completed()
319 	lockdep_assert_held(&local->mtx);  in __ieee80211_scan_completed()
327 	if (WARN_ON(!local->scanning && !aborted))  in __ieee80211_scan_completed()
330 	if (WARN_ON(!local->scan_req))  in __ieee80211_scan_completed()
334 	    !ieee80211_hw_check(&local->hw, SINGLE_SCAN_ON_ALL_BANDS) &&  in __ieee80211_scan_completed()
335 	    ieee80211_prep_hw_scan(local)) {  in __ieee80211_scan_completed()
338 		rc = drv_hw_scan(local,  in __ieee80211_scan_completed()
339 			rcu_dereference_protected(local->scan_sdata,  in __ieee80211_scan_completed()
340 						  lockdep_is_held(&local->mtx)),  in __ieee80211_scan_completed()
341 			local->hw_scan_req);  in __ieee80211_scan_completed()
347 	kfree(local->hw_scan_req);  in __ieee80211_scan_completed()
348 	local->hw_scan_req = NULL;  in __ieee80211_scan_completed()
350 	scan_req = rcu_dereference_protected(local->scan_req,  in __ieee80211_scan_completed()
351 					     lockdep_is_held(&local->mtx));  in __ieee80211_scan_completed()
353 	if (scan_req != local->int_scan_req)  in __ieee80211_scan_completed()
355 	RCU_INIT_POINTER(local->scan_req, NULL);  in __ieee80211_scan_completed()
357 	scan_sdata = rcu_dereference_protected(local->scan_sdata,  in __ieee80211_scan_completed()
358 					       lockdep_is_held(&local->mtx));  in __ieee80211_scan_completed()
359 	RCU_INIT_POINTER(local->scan_sdata, NULL);  in __ieee80211_scan_completed()
361 	local->scanning = 0;  in __ieee80211_scan_completed()
362 	local->scan_chandef.chan = NULL;  in __ieee80211_scan_completed()
365 	ieee80211_hw_config(local, 0);  in __ieee80211_scan_completed()
368 		ieee80211_configure_filter(local);  in __ieee80211_scan_completed()
369 		drv_sw_scan_complete(local, scan_sdata);  in __ieee80211_scan_completed()
370 		ieee80211_offchannel_return(local);  in __ieee80211_scan_completed()
373 	ieee80211_recalc_idle(local);  in __ieee80211_scan_completed()
375 	ieee80211_mlme_notify_scan_completed(local);  in __ieee80211_scan_completed()
376 	ieee80211_ibss_notify_scan_completed(local);  in __ieee80211_scan_completed()
382 	list_for_each_entry_rcu(sdata, &local->interfaces, list) {  in __ieee80211_scan_completed()
384 			ieee80211_queue_work(&sdata->local->hw, &sdata->work);  in __ieee80211_scan_completed()
388 		ieee80211_start_next_roc(local);  in __ieee80211_scan_completed()
393 	struct ieee80211_local *local = hw_to_local(hw);  in ieee80211_scan_completed()  local
395 	trace_api_scan_completed(local, aborted);  in ieee80211_scan_completed()
397 	set_bit(SCAN_COMPLETED, &local->scanning);  in ieee80211_scan_completed()
399 		set_bit(SCAN_ABORTED, &local->scanning);  in ieee80211_scan_completed()
400 	ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);  in ieee80211_scan_completed()
404 static int ieee80211_start_sw_scan(struct ieee80211_local *local,  in ieee80211_start_sw_scan()  argument
408 	if (local->use_chanctx)  in ieee80211_start_sw_scan()
424 	drv_sw_scan_start(local, sdata, local->scan_addr);  in ieee80211_start_sw_scan()
426 	local->leave_oper_channel_time = jiffies;  in ieee80211_start_sw_scan()
427 	local->next_scan_state = SCAN_DECISION;  in ieee80211_start_sw_scan()
428 	local->scan_channel_idx = 0;  in ieee80211_start_sw_scan()
430 	ieee80211_offchannel_stop_vifs(local);  in ieee80211_start_sw_scan()
433 	ieee80211_flush_queues(local, NULL, false);  in ieee80211_start_sw_scan()
435 	ieee80211_configure_filter(local);  in ieee80211_start_sw_scan()
438 	ieee80211_hw_config(local, 0);  in ieee80211_start_sw_scan()
440 	ieee80211_queue_delayed_work(&local->hw,  in ieee80211_start_sw_scan()
441 				     &local->scan_work, 0);  in ieee80211_start_sw_scan()
446 static bool ieee80211_can_scan(struct ieee80211_local *local,  in ieee80211_can_scan()  argument
449 	if (ieee80211_is_radar_required(local))  in ieee80211_can_scan()
452 	if (!list_empty(&local->roc_list))  in ieee80211_can_scan()
462 void ieee80211_run_deferred_scan(struct ieee80211_local *local)  in ieee80211_run_deferred_scan()  argument
464 	lockdep_assert_held(&local->mtx);  in ieee80211_run_deferred_scan()
466 	if (!local->scan_req || local->scanning)  in ieee80211_run_deferred_scan()
469 	if (!ieee80211_can_scan(local,  in ieee80211_run_deferred_scan()
471 					local->scan_sdata,  in ieee80211_run_deferred_scan()
472 					lockdep_is_held(&local->mtx))))  in ieee80211_run_deferred_scan()
475 	ieee80211_queue_delayed_work(&local->hw, &local->scan_work,  in ieee80211_run_deferred_scan()
479 static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,  in ieee80211_scan_state_send_probe()  argument
485 	enum ieee80211_band band = local->hw.conf.chandef.chan->band;  in ieee80211_scan_state_send_probe()
488 	scan_req = rcu_dereference_protected(local->scan_req,  in ieee80211_scan_state_send_probe()
489 					     lockdep_is_held(&local->mtx));  in ieee80211_scan_state_send_probe()
495 	sdata = rcu_dereference_protected(local->scan_sdata,  in ieee80211_scan_state_send_probe()
496 					  lockdep_is_held(&local->mtx));  in ieee80211_scan_state_send_probe()
500 			sdata, local->scan_addr, NULL,  in ieee80211_scan_state_send_probe()
504 			tx_flags, local->hw.conf.chandef.chan, true);  in ieee80211_scan_state_send_probe()
511 	local->next_scan_state = SCAN_DECISION;  in ieee80211_scan_state_send_probe()
517 	struct ieee80211_local *local = sdata->local;  in __ieee80211_start_scan()  local
520 	lockdep_assert_held(&local->mtx);  in __ieee80211_start_scan()
522 	if (local->scan_req || ieee80211_is_radar_required(local))  in __ieee80211_start_scan()
525 	if (!ieee80211_can_scan(local, sdata)) {  in __ieee80211_start_scan()
527 		rcu_assign_pointer(local->scan_req, req);  in __ieee80211_start_scan()
528 		rcu_assign_pointer(local->scan_sdata, sdata);  in __ieee80211_start_scan()
532 	if (local->ops->hw_scan) {  in __ieee80211_start_scan()
535 		local->hw_scan_ies_bufsize = local->scan_ies_len + req->ie_len;  in __ieee80211_start_scan()
537 		if (ieee80211_hw_check(&local->hw, SINGLE_SCAN_ON_ALL_BANDS)) {  in __ieee80211_start_scan()
548 			local->hw_scan_ies_bufsize *= n_bands;  in __ieee80211_start_scan()
551 		local->hw_scan_req = kmalloc(  in __ieee80211_start_scan()
552 				sizeof(*local->hw_scan_req) +  in __ieee80211_start_scan()
554 				local->hw_scan_ies_bufsize, GFP_KERNEL);  in __ieee80211_start_scan()
555 		if (!local->hw_scan_req)  in __ieee80211_start_scan()
558 		local->hw_scan_req->req.ssids = req->ssids;  in __ieee80211_start_scan()
559 		local->hw_scan_req->req.n_ssids = req->n_ssids;  in __ieee80211_start_scan()
560 		ies = (u8 *)local->hw_scan_req +  in __ieee80211_start_scan()
561 			sizeof(*local->hw_scan_req) +  in __ieee80211_start_scan()
563 		local->hw_scan_req->req.ie = ies;  in __ieee80211_start_scan()
564 		local->hw_scan_req->req.flags = req->flags;  in __ieee80211_start_scan()
566 		local->hw_scan_band = 0;  in __ieee80211_start_scan()
577 	rcu_assign_pointer(local->scan_req, req);  in __ieee80211_start_scan()
578 	rcu_assign_pointer(local->scan_sdata, sdata);  in __ieee80211_start_scan()
581 		get_random_mask_addr(local->scan_addr,  in __ieee80211_start_scan()
585 		memcpy(local->scan_addr, sdata->vif.addr, ETH_ALEN);  in __ieee80211_start_scan()
587 	if (local->ops->hw_scan) {  in __ieee80211_start_scan()
588 		__set_bit(SCAN_HW_SCANNING, &local->scanning);  in __ieee80211_start_scan()
590 		   (req->channels[0] == local->_oper_chandef.chan)) {  in __ieee80211_start_scan()
597 		__set_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning);  in __ieee80211_start_scan()
599 		ieee80211_recalc_idle(local);  in __ieee80211_start_scan()
603 		drv_sw_scan_start(local, sdata, local->scan_addr);  in __ieee80211_start_scan()
605 		ieee80211_configure_filter(local); /* accept probe-responses */  in __ieee80211_start_scan()
608 		ieee80211_hw_config(local, 0);  in __ieee80211_start_scan()
615 			ieee80211_scan_state_send_probe(local, &next_delay);  in __ieee80211_start_scan()
620 		ieee80211_queue_delayed_work(&local->hw, &local->scan_work,  in __ieee80211_start_scan()
625 		__set_bit(SCAN_SW_SCANNING, &local->scanning);  in __ieee80211_start_scan()
628 	ieee80211_recalc_idle(local);  in __ieee80211_start_scan()
630 	if (local->ops->hw_scan) {  in __ieee80211_start_scan()
631 		WARN_ON(!ieee80211_prep_hw_scan(local));  in __ieee80211_start_scan()
632 		rc = drv_hw_scan(local, sdata, local->hw_scan_req);  in __ieee80211_start_scan()
634 		rc = ieee80211_start_sw_scan(local, sdata);  in __ieee80211_start_scan()
638 		kfree(local->hw_scan_req);  in __ieee80211_start_scan()
639 		local->hw_scan_req = NULL;  in __ieee80211_start_scan()
640 		local->scanning = 0;  in __ieee80211_start_scan()
642 		ieee80211_recalc_idle(local);  in __ieee80211_start_scan()
644 		local->scan_req = NULL;  in __ieee80211_start_scan()
645 		RCU_INIT_POINTER(local->scan_sdata, NULL);  in __ieee80211_start_scan()
663 static void ieee80211_scan_state_decision(struct ieee80211_local *local,  in ieee80211_scan_state_decision()  argument
679 	mutex_lock(&local->iflist_mtx);  in ieee80211_scan_state_decision()
680 	list_for_each_entry(sdata, &local->interfaces, list) {  in ieee80211_scan_state_decision()
695 	mutex_unlock(&local->iflist_mtx);  in ieee80211_scan_state_decision()
697 	scan_req = rcu_dereference_protected(local->scan_req,  in ieee80211_scan_state_decision()
698 					     lockdep_is_held(&local->mtx));  in ieee80211_scan_state_decision()
700 	next_chan = scan_req->channels[local->scan_channel_idx];  in ieee80211_scan_state_decision()
712 				 local->leave_oper_channel_time + HZ / 8);  in ieee80211_scan_state_decision()
725 	local->next_scan_state = next_scan_state;  in ieee80211_scan_state_decision()
730 static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,  in ieee80211_scan_state_set_channel()  argument
738 	scan_req = rcu_dereference_protected(local->scan_req,  in ieee80211_scan_state_set_channel()
739 					     lockdep_is_held(&local->mtx));  in ieee80211_scan_state_set_channel()
742 	chan = scan_req->channels[local->scan_channel_idx];  in ieee80211_scan_state_set_channel()
744 	local->scan_chandef.chan = chan;  in ieee80211_scan_state_set_channel()
745 	local->scan_chandef.center_freq1 = chan->center_freq;  in ieee80211_scan_state_set_channel()
746 	local->scan_chandef.center_freq2 = 0;  in ieee80211_scan_state_set_channel()
749 		local->scan_chandef.width = NL80211_CHAN_WIDTH_5;  in ieee80211_scan_state_set_channel()
752 		local->scan_chandef.width = NL80211_CHAN_WIDTH_10;  in ieee80211_scan_state_set_channel()
759 					&local->_oper_chandef);  in ieee80211_scan_state_set_channel()
760 		if (chan == local->_oper_chandef.chan &&  in ieee80211_scan_state_set_channel()
762 			local->scan_chandef = local->_oper_chandef;  in ieee80211_scan_state_set_channel()
764 			local->scan_chandef.width = NL80211_CHAN_WIDTH_20_NOHT;  in ieee80211_scan_state_set_channel()
768 	if (ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL))  in ieee80211_scan_state_set_channel()
772 	local->scan_channel_idx++;  in ieee80211_scan_state_set_channel()
776 		local->next_scan_state = SCAN_DECISION;  in ieee80211_scan_state_set_channel()
793 		local->next_scan_state = SCAN_DECISION;  in ieee80211_scan_state_set_channel()
799 	local->next_scan_state = SCAN_SEND_PROBE;  in ieee80211_scan_state_set_channel()
802 static void ieee80211_scan_state_suspend(struct ieee80211_local *local,  in ieee80211_scan_state_suspend()  argument
806 	local->scan_chandef.chan = NULL;  in ieee80211_scan_state_suspend()
807 	ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);  in ieee80211_scan_state_suspend()
810 	ieee80211_offchannel_return(local);  in ieee80211_scan_state_suspend()
814 	local->next_scan_state = SCAN_RESUME;  in ieee80211_scan_state_suspend()
817 static void ieee80211_scan_state_resume(struct ieee80211_local *local,  in ieee80211_scan_state_resume()  argument
820 	ieee80211_offchannel_stop_vifs(local);  in ieee80211_scan_state_resume()
822 	if (local->ops->flush) {  in ieee80211_scan_state_resume()
823 		ieee80211_flush_queues(local, NULL, false);  in ieee80211_scan_state_resume()
829 	local->leave_oper_channel_time = jiffies;  in ieee80211_scan_state_resume()
832 	local->next_scan_state = SCAN_SET_CHANNEL;  in ieee80211_scan_state_resume()
837 	struct ieee80211_local *local =  in ieee80211_scan_work()  local
844 	mutex_lock(&local->mtx);  in ieee80211_scan_work()
846 	if (!ieee80211_can_run_worker(local)) {  in ieee80211_scan_work()
851 	sdata = rcu_dereference_protected(local->scan_sdata,  in ieee80211_scan_work()
852 					  lockdep_is_held(&local->mtx));  in ieee80211_scan_work()
853 	scan_req = rcu_dereference_protected(local->scan_req,  in ieee80211_scan_work()
854 					     lockdep_is_held(&local->mtx));  in ieee80211_scan_work()
857 	if (test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning)) {  in ieee80211_scan_work()
858 		aborted = test_and_clear_bit(SCAN_ABORTED, &local->scanning);  in ieee80211_scan_work()
862 	if (test_and_clear_bit(SCAN_COMPLETED, &local->scanning)) {  in ieee80211_scan_work()
863 		aborted = test_and_clear_bit(SCAN_ABORTED, &local->scanning);  in ieee80211_scan_work()
870 	if (!local->scanning) {  in ieee80211_scan_work()
873 		RCU_INIT_POINTER(local->scan_req, NULL);  in ieee80211_scan_work()
874 		RCU_INIT_POINTER(local->scan_sdata, NULL);  in ieee80211_scan_work()
879 			rcu_assign_pointer(local->scan_req, scan_req);  in ieee80211_scan_work()
896 		switch (local->next_scan_state) {  in ieee80211_scan_work()
899 			if (local->scan_channel_idx >= scan_req->n_channels) {  in ieee80211_scan_work()
903 			ieee80211_scan_state_decision(local, &next_delay);  in ieee80211_scan_work()
906 			ieee80211_scan_state_set_channel(local, &next_delay);  in ieee80211_scan_work()
909 			ieee80211_scan_state_send_probe(local, &next_delay);  in ieee80211_scan_work()
912 			ieee80211_scan_state_suspend(local, &next_delay);  in ieee80211_scan_work()
915 			ieee80211_scan_state_resume(local, &next_delay);  in ieee80211_scan_work()
923 	ieee80211_queue_delayed_work(&local->hw, &local->scan_work, next_delay);  in ieee80211_scan_work()
927 	__ieee80211_scan_completed(&local->hw, aborted);  in ieee80211_scan_work()
929 	mutex_unlock(&local->mtx);  in ieee80211_scan_work()
937 	mutex_lock(&sdata->local->mtx);  in ieee80211_request_scan()
939 	mutex_unlock(&sdata->local->mtx);  in ieee80211_request_scan()
950 	struct ieee80211_local *local = sdata->local;  in ieee80211_request_ibss_scan()  local
954 	mutex_lock(&local->mtx);  in ieee80211_request_ibss_scan()
957 	if (local->scan_req)  in ieee80211_request_ibss_scan()
965 			if (!local->hw.wiphy->bands[band])  in ieee80211_request_ibss_scan()
968 			max_n = local->hw.wiphy->bands[band]->n_channels;  in ieee80211_request_ibss_scan()
971 				    &local->hw.wiphy->bands[band]->channels[i];  in ieee80211_request_ibss_scan()
977 				local->int_scan_req->channels[n_ch] = tmp_ch;  in ieee80211_request_ibss_scan()
985 		local->int_scan_req->n_channels = n_ch;  in ieee80211_request_ibss_scan()
992 			local->int_scan_req->channels[n_ch] = channels[i];  in ieee80211_request_ibss_scan()
999 		local->int_scan_req->n_channels = n_ch;  in ieee80211_request_ibss_scan()
1002 	local->int_scan_req->ssids = &local->scan_ssid;  in ieee80211_request_ibss_scan()
1003 	local->int_scan_req->n_ssids = 1;  in ieee80211_request_ibss_scan()
1004 	local->int_scan_req->scan_width = scan_width;  in ieee80211_request_ibss_scan()
1005 	memcpy(local->int_scan_req->ssids[0].ssid, ssid, IEEE80211_MAX_SSID_LEN);  in ieee80211_request_ibss_scan()
1006 	local->int_scan_req->ssids[0].ssid_len = ssid_len;  in ieee80211_request_ibss_scan()
1008 	ret = __ieee80211_start_scan(sdata, sdata->local->int_scan_req);  in ieee80211_request_ibss_scan()
1010 	mutex_unlock(&local->mtx);  in ieee80211_request_ibss_scan()
1017 void ieee80211_scan_cancel(struct ieee80211_local *local)  in ieee80211_scan_cancel()  argument
1037 	mutex_lock(&local->mtx);  in ieee80211_scan_cancel()
1038 	if (!local->scan_req)  in ieee80211_scan_cancel()
1046 	if (test_bit(SCAN_HW_SCANNING, &local->scanning) &&  in ieee80211_scan_cancel()
1047 	    test_bit(SCAN_COMPLETED, &local->scanning)) {  in ieee80211_scan_cancel()
1048 		set_bit(SCAN_HW_CANCELLED, &local->scanning);  in ieee80211_scan_cancel()
1052 	if (test_bit(SCAN_HW_SCANNING, &local->scanning)) {  in ieee80211_scan_cancel()
1057 		set_bit(SCAN_HW_CANCELLED, &local->scanning);  in ieee80211_scan_cancel()
1058 		if (local->ops->cancel_hw_scan)  in ieee80211_scan_cancel()
1059 			drv_cancel_hw_scan(local,  in ieee80211_scan_cancel()
1060 				rcu_dereference_protected(local->scan_sdata,  in ieee80211_scan_cancel()
1061 						lockdep_is_held(&local->mtx)));  in ieee80211_scan_cancel()
1070 	cancel_delayed_work(&local->scan_work);  in ieee80211_scan_cancel()
1072 	__ieee80211_scan_completed(&local->hw, true);  in ieee80211_scan_cancel()
1074 	mutex_unlock(&local->mtx);  in ieee80211_scan_cancel()
1080 	struct ieee80211_local *local = sdata->local;  in __ieee80211_request_sched_scan_start()  local
1089 	iebufsz = local->scan_ies_len + req->ie_len;  in __ieee80211_request_sched_scan_start()
1091 	lockdep_assert_held(&local->mtx);  in __ieee80211_request_sched_scan_start()
1093 	if (!local->ops->sched_scan_start)  in __ieee80211_request_sched_scan_start()
1097 		if (local->hw.wiphy->bands[i]) {  in __ieee80211_request_sched_scan_start()
1112 	len = ieee80211_build_preq_ies(local, ie, num_bands * iebufsz,  in __ieee80211_request_sched_scan_start()
1117 	ret = drv_sched_scan_start(local, sdata, req, &sched_scan_ies);  in __ieee80211_request_sched_scan_start()
1119 		rcu_assign_pointer(local->sched_scan_sdata, sdata);  in __ieee80211_request_sched_scan_start()
1120 		rcu_assign_pointer(local->sched_scan_req, req);  in __ieee80211_request_sched_scan_start()
1128 		RCU_INIT_POINTER(local->sched_scan_sdata, NULL);  in __ieee80211_request_sched_scan_start()
1129 		RCU_INIT_POINTER(local->sched_scan_req, NULL);  in __ieee80211_request_sched_scan_start()
1138 	struct ieee80211_local *local = sdata->local;  in ieee80211_request_sched_scan_start()  local
1141 	mutex_lock(&local->mtx);  in ieee80211_request_sched_scan_start()
1143 	if (rcu_access_pointer(local->sched_scan_sdata)) {  in ieee80211_request_sched_scan_start()
1144 		mutex_unlock(&local->mtx);  in ieee80211_request_sched_scan_start()
1150 	mutex_unlock(&local->mtx);  in ieee80211_request_sched_scan_start()
1154 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local)  in ieee80211_request_sched_scan_stop()  argument
1159 	mutex_lock(&local->mtx);  in ieee80211_request_sched_scan_stop()
1161 	if (!local->ops->sched_scan_stop) {  in ieee80211_request_sched_scan_stop()
1167 	RCU_INIT_POINTER(local->sched_scan_req, NULL);  in ieee80211_request_sched_scan_stop()
1169 	sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,  in ieee80211_request_sched_scan_stop()
1170 						lockdep_is_held(&local->mtx));  in ieee80211_request_sched_scan_stop()
1172 		ret = drv_sched_scan_stop(local, sched_scan_sdata);  in ieee80211_request_sched_scan_stop()
1174 			RCU_INIT_POINTER(local->sched_scan_sdata, NULL);  in ieee80211_request_sched_scan_stop()
1177 	mutex_unlock(&local->mtx);  in ieee80211_request_sched_scan_stop()
1184 	struct ieee80211_local *local = hw_to_local(hw);  in ieee80211_sched_scan_results()  local
1186 	trace_api_sched_scan_results(local);  in ieee80211_sched_scan_results()
1192 void ieee80211_sched_scan_end(struct ieee80211_local *local)  in ieee80211_sched_scan_end()  argument
1194 	mutex_lock(&local->mtx);  in ieee80211_sched_scan_end()
1196 	if (!rcu_access_pointer(local->sched_scan_sdata)) {  in ieee80211_sched_scan_end()
1197 		mutex_unlock(&local->mtx);  in ieee80211_sched_scan_end()
1201 	RCU_INIT_POINTER(local->sched_scan_sdata, NULL);  in ieee80211_sched_scan_end()
1204 	RCU_INIT_POINTER(local->sched_scan_req, NULL);  in ieee80211_sched_scan_end()
1206 	mutex_unlock(&local->mtx);  in ieee80211_sched_scan_end()
1208 	cfg80211_sched_scan_stopped(local->hw.wiphy);  in ieee80211_sched_scan_end()
1213 	struct ieee80211_local *local =  in ieee80211_sched_scan_stopped_work()  local
1217 	ieee80211_sched_scan_end(local);  in ieee80211_sched_scan_stopped_work()
1222 	struct ieee80211_local *local = hw_to_local(hw);  in ieee80211_sched_scan_stopped()  local
1224 	trace_api_sched_scan_stopped(local);  in ieee80211_sched_scan_stopped()
1226 	schedule_work(&local->sched_scan_stopped_work);  in ieee80211_sched_scan_stopped()