317 static int acs_request_scan(struct hostapd_iface *iface);
356 void acs_cleanup(struct hostapd_iface *iface)  in acs_cleanup()  argument
360 	for (i = 0; i < iface->num_hw_features; i++)  in acs_cleanup()
361 		acs_cleanup_mode(&iface->hw_features[i]);  in acs_cleanup()
363 	iface->chans_surveyed = 0;  in acs_cleanup()
364 	iface->acs_num_completed_scans = 0;  in acs_cleanup()
365 	iface->acs_num_retries = 0;  in acs_cleanup()
366 	eloop_cancel_timeout(acs_scan_retry, iface, NULL);  in acs_cleanup()
370 static void acs_fail(struct hostapd_iface *iface)  in acs_fail()  argument
373 	acs_cleanup(iface);  in acs_fail()
374 	hostapd_disable_iface(iface);  in acs_fail()
410 acs_survey_chan_interference_factor(struct hostapd_iface *iface,  in acs_survey_chan_interference_factor()  argument
435 							    iface->lowest_nf);  in acs_survey_chan_interference_factor()
550 static int acs_surveys_are_sufficient(struct hostapd_iface *iface)  in acs_surveys_are_sufficient()  argument
555 	for (i = 0; i < iface->num_hw_features; i++) {  in acs_surveys_are_sufficient()
556 		mode = &iface->hw_features[i];  in acs_surveys_are_sufficient()
557 		if (!hostapd_hw_skip_mode(iface, mode) &&  in acs_surveys_are_sufficient()
574 static int is_in_chanlist(struct hostapd_iface *iface,  in is_in_chanlist()  argument
577 	if (!iface->conf->acs_ch_list.num)  in is_in_chanlist()
580 	return freq_range_list_includes(&iface->conf->acs_ch_list, chan->chan);  in is_in_chanlist()
584 static int is_in_freqlist(struct hostapd_iface *iface,  in is_in_freqlist()  argument
587 	if (!iface->conf->acs_freq_list.num)  in is_in_freqlist()
590 	return freq_range_list_includes(&iface->conf->acs_freq_list,  in is_in_freqlist()
596 	struct hostapd_iface *iface, struct hostapd_hw_modes *mode)  in acs_survey_mode_interference_factor()  argument
608 		    iface->conf->acs_exclude_dfs)  in acs_survey_mode_interference_factor()
611 		if (!is_in_chanlist(iface, chan))  in acs_survey_mode_interference_factor()
614 		if (!is_in_freqlist(iface, chan))  in acs_survey_mode_interference_factor()
617 		if (chan->max_tx_power < iface->conf->min_tx_power)  in acs_survey_mode_interference_factor()
621 		    iface->conf->country[2] == 0x4f)  in acs_survey_mode_interference_factor()
627 		acs_survey_chan_interference_factor(iface, chan);  in acs_survey_mode_interference_factor()
636 	struct hostapd_iface *iface)  in acs_survey_all_chans_interference_factor()  argument
641 	for (i = 0; i < iface->num_hw_features; i++) {  in acs_survey_all_chans_interference_factor()
642 		mode = &iface->hw_features[i];  in acs_survey_all_chans_interference_factor()
643 		if (!hostapd_hw_skip_mode(iface, mode))  in acs_survey_all_chans_interference_factor()
644 			acs_survey_mode_interference_factor(iface, mode);  in acs_survey_all_chans_interference_factor()
670 acs_find_mode(struct hostapd_iface *iface, int freq)  in acs_find_mode()  argument
676 	for (i = 0; i < iface->num_hw_features; i++) {  in acs_find_mode()
677 		mode = &iface->hw_features[i];  in acs_find_mode()
678 		if (!hostapd_hw_skip_mode(iface, mode)) {  in acs_find_mode()
690 acs_find_chan(struct hostapd_iface *iface, int freq)  in acs_find_chan()  argument
696 	for (i = 0; i < iface->num_hw_features; i++) {  in acs_find_chan()
697 		mode = &iface->hw_features[i];  in acs_find_chan()
698 		if (!hostapd_hw_skip_mode(iface, mode)) {  in acs_find_chan()
741 static void acs_update_puncturing_bitmap(struct hostapd_iface *iface,  in acs_update_puncturing_bitmap()  argument
748 	struct hostapd_config *conf = iface->conf;  in acs_update_puncturing_bitmap()
775 		adj_chan = acs_find_chan(iface, adj_freq);  in acs_update_puncturing_bitmap()
796 acs_usable_bw320_chan(struct hostapd_iface *iface,  in acs_usable_bw320_chan()  argument
800 	int conf_bw320_offset = hostapd_get_bw320_offset(iface->conf);  in acs_usable_bw320_chan()
832 acs_find_ideal_chan_mode(struct hostapd_iface *iface,  in acs_find_ideal_chan_mode()  argument
850 		secondary_channel = iface->conf->secondary_channel;  in acs_find_ideal_chan_mode()
872 		    iface->conf->acs_exclude_dfs)  in acs_find_ideal_chan_mode()
875 		if (!is_in_chanlist(iface, chan))  in acs_find_ideal_chan_mode()
878 		if (!is_in_freqlist(iface, chan))  in acs_find_ideal_chan_mode()
881 		if (chan->max_tx_power < iface->conf->min_tx_power)  in acs_find_ideal_chan_mode()
885 		    iface->conf->country[2] == 0x4f)  in acs_find_ideal_chan_mode()
898 		    ((iface->conf->ieee80211n &&  in acs_find_ideal_chan_mode()
899 		      iface->conf->secondary_channel) ||  in acs_find_ideal_chan_mode()
909 		    (iface->conf->ieee80211ac || iface->conf->ieee80211ax ||  in acs_find_ideal_chan_mode()
910 		     iface->conf->ieee80211be)) {  in acs_find_ideal_chan_mode()
911 			if (hostapd_get_oper_chwidth(iface->conf) ==  in acs_find_ideal_chan_mode()
920 			if (hostapd_get_oper_chwidth(iface->conf) ==  in acs_find_ideal_chan_mode()
931 		    iface->conf->ieee80211be) {  in acs_find_ideal_chan_mode()
932 			if (hostapd_get_oper_chwidth(iface->conf) ==  in acs_find_ideal_chan_mode()
934 			    !acs_usable_bw320_chan(iface, chan, &bw320_offset))  in acs_find_ideal_chan_mode()
947 			adj_chan = acs_find_chan(iface, chan->freq +  in acs_find_ideal_chan_mode()
979 		if (iface->current_mode &&  in acs_find_ideal_chan_mode()
980 		    iface->current_mode->mode == HOSTAPD_MODE_IEEE80211A &&  in acs_find_ideal_chan_mode()
998 				adj_chan = acs_find_chan(iface, chan->freq +  in acs_find_ideal_chan_mode()
1006 				adj_chan = acs_find_chan(iface, chan->freq +  in acs_find_ideal_chan_mode()
1014 				adj_chan = acs_find_chan(iface, chan->freq +  in acs_find_ideal_chan_mode()
1022 				adj_chan = acs_find_chan(iface, chan->freq +  in acs_find_ideal_chan_mode()
1038 		if (iface->conf->acs_chan_bias) {  in acs_find_ideal_chan_mode()
1039 			for (k = 0; k < iface->conf->num_acs_chan_bias; k++) {  in acs_find_ideal_chan_mode()
1040 				bias = &iface->conf->acs_chan_bias[k];  in acs_find_ideal_chan_mode()
1075 			if (iface->conf->ieee80211be)  in acs_find_ideal_chan_mode()
1076 				acs_update_puncturing_bitmap(iface, mode, bw,  in acs_find_ideal_chan_mode()
1090 	hostapd_set_and_check_bw320_offset(iface->conf, ideal_bw320_offset);  in acs_find_ideal_chan_mode()
1101 acs_find_ideal_chan(struct hostapd_iface *iface)  in acs_find_ideal_chan()  argument
1111 	if (is_6ghz_op_class(iface->conf->op_class)) {  in acs_find_ideal_chan()
1112 		bw = op_class_to_bandwidth(iface->conf->op_class);  in acs_find_ideal_chan()
1117 	if (iface->conf->ieee80211n &&  in acs_find_ideal_chan()
1118 	    iface->conf->secondary_channel)  in acs_find_ideal_chan()
1121 	if (iface->conf->ieee80211ac || iface->conf->ieee80211ax ||  in acs_find_ideal_chan()
1122 	    iface->conf->ieee80211be) {  in acs_find_ideal_chan()
1123 		switch (hostapd_get_oper_chwidth(iface->conf)) {  in acs_find_ideal_chan()
1146 	for (i = 0; i < iface->num_hw_features; i++) {  in acs_find_ideal_chan()
1147 		mode = &iface->hw_features[i];  in acs_find_ideal_chan()
1148 		if (!hostapd_hw_skip_mode(iface, mode))  in acs_find_ideal_chan()
1149 			acs_find_ideal_chan_mode(iface, mode, n_chans, bw,  in acs_find_ideal_chan()
1159 		if (iface->conf->punct_acs_threshold)  in acs_find_ideal_chan()
1171 static void acs_adjust_secondary(struct hostapd_iface *iface)  in acs_adjust_secondary()  argument
1178 	if (!iface->conf->secondary_channel ||  in acs_adjust_secondary()
1179 	    acs_find_mode(iface, iface->freq) != HOSTAPD_MODE_IEEE80211A)  in acs_adjust_secondary()
1186 		if (iface->freq == bw_desc[ACS_BW40][i].first)  in acs_adjust_secondary()
1187 			iface->conf->secondary_channel = 1;  in acs_adjust_secondary()
1188 		else if (iface->freq == bw_desc[ACS_BW40][i].last)  in acs_adjust_secondary()
1189 			iface->conf->secondary_channel = -1;  in acs_adjust_secondary()
1194 static void acs_adjust_center_freq(struct hostapd_iface *iface)  in acs_adjust_center_freq()  argument
1200 	switch (hostapd_get_oper_chwidth(iface->conf)) {  in acs_adjust_center_freq()
1202 		if (iface->conf->secondary_channel &&  in acs_adjust_center_freq()
1203 		    iface->freq >= 2400 && iface->freq < 2500)  in acs_adjust_center_freq()
1204 			center = iface->conf->channel +  in acs_adjust_center_freq()
1205 				2 * iface->conf->secondary_channel;  in acs_adjust_center_freq()
1206 		else if (iface->conf->secondary_channel)  in acs_adjust_center_freq()
1207 			center = acs_get_bw_center_chan(iface->freq, ACS_BW40);  in acs_adjust_center_freq()
1209 			center = iface->conf->channel;  in acs_adjust_center_freq()
1212 		center = acs_get_bw_center_chan(iface->freq, ACS_BW80);  in acs_adjust_center_freq()
1215 		center = acs_get_bw_center_chan(iface->freq, ACS_BW160);  in acs_adjust_center_freq()
1218 		switch (hostapd_get_bw320_offset(iface->conf)) {  in acs_adjust_center_freq()
1220 			center = acs_get_bw_center_chan(iface->freq,  in acs_adjust_center_freq()
1224 			center = acs_get_bw_center_chan(iface->freq,  in acs_adjust_center_freq()
1242 	hostapd_set_oper_centr_freq_seg0_idx(iface->conf, center);  in acs_adjust_center_freq()
1246 static int acs_study_survey_based(struct hostapd_iface *iface)  in acs_study_survey_based()  argument
1250 	if (!iface->chans_surveyed) {  in acs_study_survey_based()
1255 	if (!acs_surveys_are_sufficient(iface)) {  in acs_study_survey_based()
1260 	acs_survey_all_chans_interference_factor(iface);  in acs_study_survey_based()
1265 static int acs_study_options(struct hostapd_iface *iface)  in acs_study_options()  argument
1267 	if (acs_study_survey_based(iface) == 0)  in acs_study_options()
1277 static void acs_study(struct hostapd_iface *iface)  in acs_study()  argument
1282 	err = acs_study_options(iface);  in acs_study()
1288 	ideal_chan = acs_find_ideal_chan(iface);  in acs_study()
1295 	iface->conf->channel = ideal_chan->chan;  in acs_study()
1296 	iface->freq = ideal_chan->freq;  in acs_study()
1298 	iface->conf->punct_bitmap = ideal_chan->punct_bitmap;  in acs_study()
1301 	if (iface->conf->ieee80211ac || iface->conf->ieee80211ax ||  in acs_study()
1302 	    iface->conf->ieee80211be) {  in acs_study()
1303 		acs_adjust_secondary(iface);  in acs_study()
1304 		acs_adjust_center_freq(iface);  in acs_study()
1307 	err = hostapd_select_hw_mode(iface);  in acs_study()
1311 			err, iface->freq, iface->conf->channel);  in acs_study()
1322 	if (hostapd_acs_completed(iface, err) == HOSTAPD_CHAN_VALID) {  in acs_study()
1323 		acs_cleanup(iface);  in acs_study()
1330 	acs_fail(iface);  in acs_study()
1334 static void acs_scan_complete(struct hostapd_iface *iface)  in acs_scan_complete()  argument
1338 	iface->scan_cb = NULL;  in acs_scan_complete()
1339 	iface->acs_num_retries = 0;  in acs_scan_complete()
1342 		   iface->conf->acs_num_scans);  in acs_scan_complete()
1344 	err = hostapd_drv_get_survey(iface->bss[0], 0);  in acs_scan_complete()
1350 	if (++iface->acs_num_completed_scans < iface->conf->acs_num_scans) {  in acs_scan_complete()
1351 		err = acs_request_scan(iface);  in acs_scan_complete()
1360 	acs_study(iface);  in acs_scan_complete()
1363 	hostapd_acs_completed(iface, 1);  in acs_scan_complete()
1364 	acs_fail(iface);  in acs_scan_complete()
1368 static int * acs_request_scan_add_freqs(struct hostapd_iface *iface,  in acs_request_scan_add_freqs()  argument
1379 		     iface->conf->acs_exclude_dfs))  in acs_request_scan_add_freqs()
1382 		if (!is_in_chanlist(iface, chan))  in acs_request_scan_add_freqs()
1385 		if (!is_in_freqlist(iface, chan))  in acs_request_scan_add_freqs()
1388 		if (chan->max_tx_power < iface->conf->min_tx_power)  in acs_request_scan_add_freqs()
1392 		    iface->conf->country[2] == 0x4f)  in acs_request_scan_add_freqs()
1402 static int acs_request_scan(struct hostapd_iface *iface)  in acs_request_scan()  argument
1412 	for (i = 0; i < iface->num_hw_features; i++) {  in acs_request_scan()
1413 		mode = &iface->hw_features[i];  in acs_request_scan()
1414 		if (!hostapd_hw_skip_mode(iface, mode))  in acs_request_scan()
1424 	for (i = 0; i < iface->num_hw_features; i++) {  in acs_request_scan()
1425 		mode = &iface->hw_features[i];  in acs_request_scan()
1426 		if (!hostapd_hw_skip_mode(iface, mode))  in acs_request_scan()
1427 			freq = acs_request_scan_add_freqs(iface, mode, freq);  in acs_request_scan()
1438 	if (!iface->acs_num_retries)  in acs_request_scan()
1440 			   iface->acs_num_completed_scans + 1,  in acs_request_scan()
1441 			   iface->conf->acs_num_scans);  in acs_request_scan()
1445 			   iface->acs_num_retries,  in acs_request_scan()
1446 			   iface->acs_num_completed_scans + 1,  in acs_request_scan()
1447 			   iface->conf->acs_num_scans);  in acs_request_scan()
1449 	ret = hostapd_driver_scan(iface->bss[0], &params);  in acs_request_scan()
1453 		iface->acs_num_retries++;  in acs_request_scan()
1454 		if (iface->acs_num_retries >= ACS_SCAN_RETRY_MAX_COUNT) {  in acs_request_scan()
1457 			acs_fail(iface);  in acs_request_scan()
1464 		eloop_cancel_timeout(acs_scan_retry, iface, NULL);  in acs_request_scan()
1466 				       acs_scan_retry, iface, NULL);  in acs_request_scan()
1472 		acs_cleanup(iface);  in acs_request_scan()
1476 	iface->scan_cb = acs_scan_complete;  in acs_request_scan()
1484 	struct hostapd_iface *iface = eloop_data;  in acs_scan_retry()  local
1486 	if (acs_request_scan(iface)) {  in acs_scan_retry()
1489 		acs_fail(iface);  in acs_scan_retry()
1494 enum hostapd_chan_status acs_init(struct hostapd_iface *iface)  in acs_init()  argument
1500 	if (iface->drv_flags & WPA_DRIVER_FLAGS_ACS_OFFLOAD) {  in acs_init()
1503 		err = hostapd_drv_do_acs(iface->bss[0]);  in acs_init()
1513 	if (!iface->current_mode &&  in acs_init()
1514 	    iface->conf->hw_mode != HOSTAPD_MODE_IEEE80211ANY)  in acs_init()
1517 	acs_cleanup(iface);  in acs_init()
1519 	if (acs_request_scan(iface) < 0)  in acs_init()
1522 	hostapd_set_state(iface, HAPD_IFACE_ACS);  in acs_init()
1523 	wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, ACS_EVENT_STARTED);  in acs_init()