22 static int dfs_get_used_n_chans(struct hostapd_iface *iface, int *seg1)  in dfs_get_used_n_chans()  argument
28 	if (iface->conf->ieee80211n && iface->conf->secondary_channel)  in dfs_get_used_n_chans()
31 	if (iface->conf->ieee80211ac) {  in dfs_get_used_n_chans()
32 		switch (iface->conf->vht_oper_chwidth) {  in dfs_get_used_n_chans()
165 static int is_in_chanlist(struct hostapd_iface *iface,  in is_in_chanlist()  argument
168 	if (!iface->conf->acs_ch_list.num)  in is_in_chanlist()
171 	return freq_range_list_includes(&iface->conf->acs_ch_list, chan->chan);  in is_in_chanlist()
182 static int dfs_find_channel(struct hostapd_iface *iface,  in dfs_find_channel()  argument
190 	mode = iface->current_mode;  in dfs_find_channel()
191 	n_chans = dfs_get_used_n_chans(iface, &n_chans1);  in dfs_find_channel()
198 		if (iface->conf->ieee80211n &&  in dfs_find_channel()
199 		    iface->conf->secondary_channel &&  in dfs_find_channel()
207 		if (!is_in_chanlist(iface, chan))  in dfs_find_channel()
222 static void dfs_adjust_vht_center_freq(struct hostapd_iface *iface,  in dfs_adjust_vht_center_freq()  argument
228 	if (!iface->conf->ieee80211ac)  in dfs_adjust_vht_center_freq()
236 	switch (iface->conf->vht_oper_chwidth) {  in dfs_adjust_vht_center_freq()
264 static int dfs_get_start_chan_idx(struct hostapd_iface *iface, int *seg1_start)  in dfs_get_start_chan_idx()  argument
268 	int channel_no = iface->conf->channel;  in dfs_get_start_chan_idx()
275 	if (iface->conf->ieee80211n && iface->conf->secondary_channel == -1)  in dfs_get_start_chan_idx()
279 	if (iface->conf->ieee80211ac) {  in dfs_get_start_chan_idx()
280 		switch (iface->conf->vht_oper_chwidth) {  in dfs_get_start_chan_idx()
285 				iface->conf->vht_oper_centr_freq_seg0_idx - 6;  in dfs_get_start_chan_idx()
289 				iface->conf->vht_oper_centr_freq_seg0_idx - 14;  in dfs_get_start_chan_idx()
293 				iface->conf->vht_oper_centr_freq_seg0_idx - 6;  in dfs_get_start_chan_idx()
295 				iface->conf->vht_oper_centr_freq_seg1_idx - 6;  in dfs_get_start_chan_idx()
306 	mode = iface->current_mode;  in dfs_get_start_chan_idx()
319 		mode = iface->current_mode;  in dfs_get_start_chan_idx()
335 			   mode->num_channels, channel_no, iface->conf->channel,  in dfs_get_start_chan_idx()
336 			   iface->conf->ieee80211n,  in dfs_get_start_chan_idx()
337 			   iface->conf->secondary_channel,  in dfs_get_start_chan_idx()
338 			   iface->conf->vht_oper_chwidth);  in dfs_get_start_chan_idx()
351 static int dfs_check_chans_radar(struct hostapd_iface *iface,  in dfs_check_chans_radar()  argument
358 	mode = iface->current_mode;  in dfs_check_chans_radar()
371 static int dfs_check_chans_available(struct hostapd_iface *iface,  in dfs_check_chans_available()  argument
378 	mode = iface->current_mode;  in dfs_check_chans_available()
399 static int dfs_check_chans_unavailable(struct hostapd_iface *iface,  in dfs_check_chans_unavailable()  argument
407 	mode = iface->current_mode;  in dfs_check_chans_unavailable()
423 dfs_get_valid_channel(struct hostapd_iface *iface,  in dfs_get_valid_channel()  argument
440 	if (iface->current_mode == NULL)  in dfs_get_valid_channel()
443 	mode = iface->current_mode;  in dfs_get_valid_channel()
448 	num_available_chandefs = dfs_find_channel(iface, NULL, 0, skip_radar);  in dfs_get_valid_channel()
455 	dfs_find_channel(iface, &chan, chan_idx, skip_radar);  in dfs_get_valid_channel()
458 	if (iface->conf->secondary_channel)  in dfs_get_valid_channel()
463 	dfs_adjust_vht_center_freq(iface, chan,  in dfs_get_valid_channel()
472 static int set_dfs_state_freq(struct hostapd_iface *iface, int freq, u32 state)  in set_dfs_state_freq()  argument
478 	mode = iface->current_mode;  in set_dfs_state_freq()
483 	for (i = 0; i < iface->current_mode->num_channels; i++) {  in set_dfs_state_freq()
484 		chan = &iface->current_mode->channels[i];  in set_dfs_state_freq()
498 static int set_dfs_state(struct hostapd_iface *iface, int freq, int ht_enabled,  in set_dfs_state()  argument
507 	mode = iface->current_mode;  in set_dfs_state()
545 		ret += set_dfs_state_freq(iface, frequency, state);  in set_dfs_state()
553 static int dfs_are_channels_overlapped(struct hostapd_iface *iface, int freq,  in dfs_are_channels_overlapped()  argument
564 	mode = iface->current_mode;  in dfs_are_channels_overlapped()
565 	start_chan_idx = dfs_get_start_chan_idx(iface, &start_chan_idx1);  in dfs_are_channels_overlapped()
566 	n_chans = dfs_get_used_n_chans(iface, &n_chans1);  in dfs_are_channels_overlapped()
569 	if (!dfs_check_chans_radar(iface, start_chan_idx, n_chans))  in dfs_are_channels_overlapped()
618 static unsigned int dfs_get_cac_time(struct hostapd_iface *iface,  in dfs_get_cac_time()  argument
626 	mode = iface->current_mode;  in dfs_get_cac_time()
646 int hostapd_handle_dfs(struct hostapd_iface *iface)  in hostapd_handle_dfs()  argument
652 	if (!iface->current_mode) {  in hostapd_handle_dfs()
662 	iface->cac_started = 0;  in hostapd_handle_dfs()
666 		start_chan_idx = dfs_get_start_chan_idx(iface,  in hostapd_handle_dfs()
672 		n_chans = dfs_get_used_n_chans(iface, &n_chans1);  in hostapd_handle_dfs()
675 		iface->dfs_cac_ms = dfs_get_cac_time(iface, start_chan_idx,  in hostapd_handle_dfs()
679 		res = dfs_check_chans_radar(iface, start_chan_idx, n_chans);  in hostapd_handle_dfs()
687 		res = dfs_check_chans_available(iface, start_chan_idx, n_chans);  in hostapd_handle_dfs()
695 		res = dfs_check_chans_unavailable(iface, start_chan_idx,  in hostapd_handle_dfs()
703 			channel = dfs_get_valid_channel(iface, &sec, &cf1, &cf2,  in hostapd_handle_dfs()
710 			iface->freq = channel->freq;  in hostapd_handle_dfs()
711 			iface->conf->channel = channel->chan;  in hostapd_handle_dfs()
712 			iface->conf->secondary_channel = sec;  in hostapd_handle_dfs()
713 			iface->conf->vht_oper_centr_freq_seg0_idx = cf1;  in hostapd_handle_dfs()
714 			iface->conf->vht_oper_centr_freq_seg1_idx = cf2;  in hostapd_handle_dfs()
719 	hostapd_set_state(iface, HAPD_IFACE_DFS);  in hostapd_handle_dfs()
720 	wpa_printf(MSG_DEBUG, "DFS start CAC on %d MHz", iface->freq);  in hostapd_handle_dfs()
721 	wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, DFS_EVENT_CAC_START  in hostapd_handle_dfs()
723 		iface->freq,  in hostapd_handle_dfs()
724 		iface->conf->channel, iface->conf->secondary_channel,  in hostapd_handle_dfs()
725 		iface->conf->vht_oper_chwidth,  in hostapd_handle_dfs()
726 		iface->conf->vht_oper_centr_freq_seg0_idx,  in hostapd_handle_dfs()
727 		iface->conf->vht_oper_centr_freq_seg1_idx,  in hostapd_handle_dfs()
728 		iface->dfs_cac_ms / 1000);  in hostapd_handle_dfs()
730 	res = hostapd_start_dfs_cac(iface, iface->conf->hw_mode,  in hostapd_handle_dfs()
731 				    iface->freq,  in hostapd_handle_dfs()
732 				    iface->conf->channel,  in hostapd_handle_dfs()
733 				    iface->conf->ieee80211n,  in hostapd_handle_dfs()
734 				    iface->conf->ieee80211ac,  in hostapd_handle_dfs()
735 				    iface->conf->secondary_channel,  in hostapd_handle_dfs()
736 				    iface->conf->vht_oper_chwidth,  in hostapd_handle_dfs()
737 				    iface->conf->vht_oper_centr_freq_seg0_idx,  in hostapd_handle_dfs()
738 				    iface->conf->vht_oper_centr_freq_seg1_idx);  in hostapd_handle_dfs()
749 int hostapd_dfs_complete_cac(struct hostapd_iface *iface, int success, int freq,  in hostapd_dfs_complete_cac()  argument
753 	wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, DFS_EVENT_CAC_COMPLETED  in hostapd_dfs_complete_cac()
759 		if (iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) {  in hostapd_dfs_complete_cac()
761 			if (iface->state != HAPD_IFACE_ENABLED)  in hostapd_dfs_complete_cac()
762 				hostapd_setup_interface_complete(iface, 0);  in hostapd_dfs_complete_cac()
764 				iface->cac_started = 0;  in hostapd_dfs_complete_cac()
766 			set_dfs_state(iface, freq, ht_enabled, chan_offset,  in hostapd_dfs_complete_cac()
769 			iface->cac_started = 0;  in hostapd_dfs_complete_cac()
770 			hostapd_setup_interface_complete(iface, 0);  in hostapd_dfs_complete_cac()
778 static int hostapd_dfs_start_channel_switch_cac(struct hostapd_iface *iface)  in hostapd_dfs_start_channel_switch_cac()  argument
788 	iface->cac_started = 0;  in hostapd_dfs_start_channel_switch_cac()
789 	channel = dfs_get_valid_channel(iface, &secondary_channel,  in hostapd_dfs_start_channel_switch_cac()
796 		hostapd_setup_interface_complete(iface, err);  in hostapd_dfs_start_channel_switch_cac()
802 	wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, DFS_EVENT_NEW_CHANNEL  in hostapd_dfs_start_channel_switch_cac()
806 	iface->freq = channel->freq;  in hostapd_dfs_start_channel_switch_cac()
807 	iface->conf->channel = channel->chan;  in hostapd_dfs_start_channel_switch_cac()
808 	iface->conf->secondary_channel = secondary_channel;  in hostapd_dfs_start_channel_switch_cac()
809 	iface->conf->vht_oper_centr_freq_seg0_idx =  in hostapd_dfs_start_channel_switch_cac()
811 	iface->conf->vht_oper_centr_freq_seg1_idx =  in hostapd_dfs_start_channel_switch_cac()
815 	hostapd_setup_interface_complete(iface, err);  in hostapd_dfs_start_channel_switch_cac()
820 static int hostapd_csa_in_progress(struct hostapd_iface *iface)  in hostapd_csa_in_progress()  argument
823 	for (i = 0; i < iface->num_bss; i++)  in hostapd_csa_in_progress()
824 		if (iface->bss[i]->csa_in_progress)  in hostapd_csa_in_progress()
830 static int hostapd_dfs_start_channel_switch(struct hostapd_iface *iface)  in hostapd_dfs_start_channel_switch()  argument
842 		   __func__, iface->cac_started ? "yes" : "no",  in hostapd_dfs_start_channel_switch()
843 		   hostapd_csa_in_progress(iface) ? "yes" : "no");  in hostapd_dfs_start_channel_switch()
846 	if (hostapd_csa_in_progress(iface))  in hostapd_dfs_start_channel_switch()
850 	if (iface->cac_started)  in hostapd_dfs_start_channel_switch()
851 		return hostapd_dfs_start_channel_switch_cac(iface);  in hostapd_dfs_start_channel_switch()
854 	channel = dfs_get_valid_channel(iface, &secondary_channel,  in hostapd_dfs_start_channel_switch()
866 		channel = dfs_get_valid_channel(iface, &secondary_channel,  in hostapd_dfs_start_channel_switch()
872 			hostapd_disable_iface(iface);  in hostapd_dfs_start_channel_switch()
876 		iface->freq = channel->freq;  in hostapd_dfs_start_channel_switch()
877 		iface->conf->channel = channel->chan;  in hostapd_dfs_start_channel_switch()
878 		iface->conf->secondary_channel = secondary_channel;  in hostapd_dfs_start_channel_switch()
879 		iface->conf->vht_oper_centr_freq_seg0_idx =  in hostapd_dfs_start_channel_switch()
881 		iface->conf->vht_oper_centr_freq_seg1_idx =  in hostapd_dfs_start_channel_switch()
884 		hostapd_disable_iface(iface);  in hostapd_dfs_start_channel_switch()
885 		hostapd_enable_iface(iface);  in hostapd_dfs_start_channel_switch()
891 	wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, DFS_EVENT_NEW_CHANNEL  in hostapd_dfs_start_channel_switch()
900 				      iface->conf->hw_mode,  in hostapd_dfs_start_channel_switch()
903 				      iface->conf->ieee80211n,  in hostapd_dfs_start_channel_switch()
904 				      iface->conf->ieee80211ac,  in hostapd_dfs_start_channel_switch()
906 				      iface->conf->vht_oper_chwidth,  in hostapd_dfs_start_channel_switch()
909 				      iface->current_mode->vht_capab);  in hostapd_dfs_start_channel_switch()
913 		hostapd_disable_iface(iface);  in hostapd_dfs_start_channel_switch()
917 	for (i = 0; i < iface->num_bss; i++) {  in hostapd_dfs_start_channel_switch()
918 		err = hostapd_switch_channel(iface->bss[i], &csa_settings);  in hostapd_dfs_start_channel_switch()
926 		iface->freq = channel->freq;  in hostapd_dfs_start_channel_switch()
927 		iface->conf->channel = channel->chan;  in hostapd_dfs_start_channel_switch()
928 		iface->conf->secondary_channel = secondary_channel;  in hostapd_dfs_start_channel_switch()
929 		iface->conf->vht_oper_centr_freq_seg0_idx =  in hostapd_dfs_start_channel_switch()
931 		iface->conf->vht_oper_centr_freq_seg1_idx =  in hostapd_dfs_start_channel_switch()
934 		hostapd_disable_iface(iface);  in hostapd_dfs_start_channel_switch()
935 		hostapd_enable_iface(iface);  in hostapd_dfs_start_channel_switch()
947 int hostapd_dfs_radar_detected(struct hostapd_iface *iface, int freq,  in hostapd_dfs_radar_detected()  argument
953 	wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, DFS_EVENT_RADAR_DETECTED  in hostapd_dfs_radar_detected()
958 	if (iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)  in hostapd_dfs_radar_detected()
961 	if (!iface->conf->ieee80211h)  in hostapd_dfs_radar_detected()
965 	set_dfs_state(iface, freq, ht_enabled, chan_offset, chan_width,  in hostapd_dfs_radar_detected()
969 	res = dfs_are_channels_overlapped(iface, freq, chan_width, cf1, cf2);  in hostapd_dfs_radar_detected()
974 	res = hostapd_dfs_start_channel_switch(iface);  in hostapd_dfs_radar_detected()
980 int hostapd_dfs_nop_finished(struct hostapd_iface *iface, int freq,  in hostapd_dfs_nop_finished()  argument
984 	wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, DFS_EVENT_NOP_FINISHED  in hostapd_dfs_nop_finished()
989 	if (iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)  in hostapd_dfs_nop_finished()
993 	set_dfs_state(iface, freq, ht_enabled, chan_offset, chan_width,  in hostapd_dfs_nop_finished()
999 int hostapd_is_dfs_required(struct hostapd_iface *iface)  in hostapd_is_dfs_required()  argument
1003 	if (!iface->conf->ieee80211h || !iface->current_mode ||  in hostapd_is_dfs_required()
1004 	    iface->current_mode->mode != HOSTAPD_MODE_IEEE80211A)  in hostapd_is_dfs_required()
1008 	start_chan_idx = dfs_get_start_chan_idx(iface, &start_chan_idx1);  in hostapd_is_dfs_required()
1013 	n_chans = dfs_get_used_n_chans(iface, &n_chans1);  in hostapd_is_dfs_required()
1016 	res = dfs_check_chans_radar(iface, start_chan_idx, n_chans);  in hostapd_is_dfs_required()
1020 		res = dfs_check_chans_radar(iface, start_chan_idx1, n_chans1);  in hostapd_is_dfs_required()
1025 int hostapd_dfs_start_cac(struct hostapd_iface *iface, int freq,  in hostapd_dfs_start_cac()  argument
1029 	wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, DFS_EVENT_CAC_START  in hostapd_dfs_start_cac()
1033 	iface->cac_started = 1;  in hostapd_dfs_start_cac()
1045 int hostapd_handle_dfs_offload(struct hostapd_iface *iface)  in hostapd_handle_dfs_offload()  argument
1048 		   __func__, iface->cac_started);  in hostapd_handle_dfs_offload()
1055 	if (iface->cac_started) {  in hostapd_handle_dfs_offload()
1057 			   __func__, iface->cac_started);  in hostapd_handle_dfs_offload()
1058 		iface->cac_started = 0;  in hostapd_handle_dfs_offload()
1062 	if (ieee80211_is_dfs(iface->freq)) {  in hostapd_handle_dfs_offload()
1064 			   __func__, iface->freq);  in hostapd_handle_dfs_offload()
1070 		   __func__, iface->freq);  in hostapd_handle_dfs_offload()