net/wireless/chan.c

23 void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
30 	*chandef = (struct cfg80211_chan_def) {
37 		chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
38 		chandef->center_freq1 = chan->center_freq;
41 		chandef->width = NL80211_CHAN_WIDTH_20;
42 		chandef->center_freq1 = chan->center_freq;
45 		chandef->width = NL80211_CHAN_WIDTH_40;
46 		chandef->center_freq1 = chan->center_freq + 10;
49 		chandef->width = NL80211_CHAN_WIDTH_40;
50 		chandef->center_freq1 = chan->center_freq - 10;
89 static bool valid_puncturing_bitmap(const struct cfg80211_chan_def *chandef)
91 	u32 idx, i, start_freq, primary_center = chandef->chan->center_freq;
93 	switch (chandef->width) {
96 		start_freq = chandef->center_freq1 - 40;
100 		start_freq = chandef->center_freq1 - 80;
104 		start_freq = chandef->center_freq1 - 160;
107 		return chandef->punctured == 0;
110 	if (!chandef->punctured)
114 	if (chandef->punctured & (u16)BIT((primary_center - start_freq) / 20))
118 		if (per_bw_puncturing[idx].valid_values[i] == chandef->punctured)
125 static bool cfg80211_edmg_chandef_valid(const struct cfg80211_chan_def *chandef)
132 	if (!chandef->edmg.channels || !chandef->edmg.bw_config)
135 	if (!cfg80211_valid_60g_freq(chandef->chan->center_freq))
139 		if (chandef->edmg.channels & BIT(i)) {
152 	switch (chandef->edmg.bw_config) {
183 	switch (chandef->edmg.bw_config) {
266 bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
271 	if (!chandef->chan)
274 	if (chandef->freq1_offset >= 1000)
277 	control_freq = chandef->chan->center_freq;
279 	switch (chandef->width) {
284 		if (ieee80211_chandef_to_khz(chandef) !=
285 		    ieee80211_channel_to_khz(chandef->chan))
287 		if (chandef->center_freq2)
295 		if (chandef->chan->band != NL80211_BAND_S1GHZ)
298 		control_freq = ieee80211_channel_to_khz(chandef->chan);
299 		oper_freq = ieee80211_chandef_to_khz(chandef);
302 								chandef->chan));
303 		oper_width = cfg80211_chandef_get_width(chandef);
307 		if (chandef->center_freq2)
319 		if (!chandef->center_freq2)
322 		if (chandef->center_freq1 - chandef->center_freq2 == 80 ||
323 		    chandef->center_freq2 - chandef->center_freq1 == 80)
327 		if (chandef->center_freq2)
332 	switch (chandef->width) {
345 		if (chandef->center_freq1 == control_freq + 150 ||
346 		    chandef->center_freq1 == control_freq + 130 ||
347 		    chandef->center_freq1 == control_freq + 110 ||
348 		    chandef->center_freq1 == control_freq + 90 ||
349 		    chandef->center_freq1 == control_freq - 90 ||
350 		    chandef->center_freq1 == control_freq - 110 ||
351 		    chandef->center_freq1 == control_freq - 130 ||
352 		    chandef->center_freq1 == control_freq - 150)
356 		if (chandef->center_freq1 == control_freq + 70 ||
357 		    chandef->center_freq1 == control_freq + 50 ||
358 		    chandef->center_freq1 == control_freq - 50 ||
359 		    chandef->center_freq1 == control_freq - 70)
364 		if (chandef->center_freq1 == control_freq + 30 ||
365 		    chandef->center_freq1 == control_freq - 30)
369 		if (chandef->center_freq1 == control_freq + 10 ||
370 		    chandef->center_freq1 == control_freq - 10)
378 	if (chandef->center_freq1 == 2484 &&
379 	    chandef->width != NL80211_CHAN_WIDTH_20_NOHT)
382 	if (cfg80211_chandef_is_edmg(chandef) &&
383 	    !cfg80211_edmg_chandef_valid(chandef))
386 	return valid_puncturing_bitmap(chandef);
567 			    const struct cfg80211_chan_def *chandef,
572 	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
575 	width = cfg80211_chandef_get_width(chandef);
579 	cfg80211_set_chans_dfs_state(wiphy, chandef->center_freq1,
582 	if (!chandef->center_freq2)
584 	cfg80211_set_chans_dfs_state(wiphy, chandef->center_freq2,
626 		struct cfg80211_chan_def chandef = {};
644 		ret = rdev_get_channel(rdev, wdev, link_id, &chandef);
648 		if (cfg80211_is_sub_chan(&chandef, chan, false))
715 				  const struct cfg80211_chan_def *chandef,
721 	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
729 		width = cfg80211_chandef_get_width(chandef);
734 					ieee80211_chandef_to_khz(chandef),
739 			return BIT(chandef->width);
741 		if (!chandef->center_freq2)
745 					MHZ_TO_KHZ(chandef->center_freq2),
750 			return BIT(chandef->width);
809 				 const struct cfg80211_chan_def *chandef)
814 	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
817 	width = cfg80211_chandef_get_width(chandef);
822 					   MHZ_TO_KHZ(chandef->center_freq1),
828 	switch (chandef->width) {
830 		WARN_ON(!chandef->center_freq2);
832 					MHZ_TO_KHZ(chandef->center_freq2),
838 		WARN_ON(chandef->center_freq2);
848  * range of chandef.
850 bool cfg80211_is_sub_chan(struct cfg80211_chan_def *chandef,
857 	if (!chandef->chan)
860 	if (chandef->chan->center_freq == chan->center_freq)
866 	width = cfg80211_chandef_get_width(chandef);
870 	for (freq = chandef->center_freq1 - width / 2 + 10;
871 	     freq <= chandef->center_freq1 + width / 2 - 10; freq += 20) {
876 	if (!chandef->center_freq2)
879 	for (freq = chandef->center_freq2 - width / 2 + 10;
880 	     freq <= chandef->center_freq2 + width / 2 - 10; freq += 20) {
938 			if (cfg80211_is_sub_chan(&wdev->links[link].ap.chandef,
944 		return cfg80211_is_sub_chan(&wdev->u.ibss.chandef, chan,
947 		return cfg80211_is_sub_chan(&wdev->u.mesh.chandef, chan,
1053 				const struct cfg80211_chan_def *chandef)
1058 	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
1061 	width = cfg80211_chandef_get_width(chandef);
1066 					     MHZ_TO_KHZ(chandef->center_freq1),
1073 	switch (chandef->width) {
1075 		WARN_ON(!chandef->center_freq2);
1077 					MHZ_TO_KHZ(chandef->center_freq2),
1081 		WARN_ON(chandef->center_freq2);
1119 			      const struct cfg80211_chan_def *chandef)
1124 	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
1127 	width = cfg80211_chandef_get_width(chandef);
1132 					     MHZ_TO_KHZ(chandef->center_freq1),
1135 	if (!chandef->center_freq2)
1139 					     MHZ_TO_KHZ(chandef->center_freq2),
1223 			      const struct cfg80211_chan_def *chandef,
1235 	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
1238 	ht_cap = &wiphy->bands[chandef->chan->band]->ht_cap;
1239 	vht_cap = &wiphy->bands[chandef->chan->band]->vht_cap;
1240 	edmg_cap = &wiphy->bands[chandef->chan->band]->edmg_cap;
1246 				  chandef->edmg.channels,
1247 				  chandef->edmg.bw_config,
1248 				  chandef->chan->hw_value,
1252 	control_freq = chandef->chan->center_freq;
1254 	switch (chandef->width) {
1279 		    chandef->chan->band != NL80211_BAND_6GHZ)
1288 		if (chandef->chan->band == NL80211_BAND_6GHZ)
1295 		if (chandef->center_freq1 < control_freq &&
1296 		    chandef->chan->flags & IEEE80211_CHAN_NO_HT40MINUS)
1298 		if (chandef->center_freq1 > control_freq &&
1299 		    chandef->chan->flags & IEEE80211_CHAN_NO_HT40PLUS)
1310 		if (chandef->chan->band != NL80211_BAND_6GHZ && !support_80_80)
1316 		if (chandef->chan->band == NL80211_BAND_6GHZ)
1324 		if (chandef->chan->band == NL80211_BAND_6GHZ)
1339 		if (chandef->chan->band != NL80211_BAND_6GHZ)
1385 					 ieee80211_chandef_to_khz(chandef),
1389 	if (!chandef->center_freq2)
1392 					   MHZ_TO_KHZ(chandef->center_freq2),
1397 			     const struct cfg80211_chan_def *chandef,
1400 	return _cfg80211_chandef_usable(wiphy, chandef, prohibited_flags,
1429 			other_chan = wdev->links[link_id].ap.chandef.chan;
1521 				     struct cfg80211_chan_def *chandef,
1529 	trace_cfg80211_reg_can_beacon(wiphy, chandef, iftype, check_no_ir);
1534 	dfs_required = cfg80211_chandef_dfs_required(wiphy, chandef, iftype);
1539 	    cfg80211_chandef_dfs_available(wiphy, chandef)) {
1540 		/* We can skip IEEE80211_CHAN_NO_IR if chandef dfs available */
1544 	res = cfg80211_chandef_usable(wiphy, chandef, prohibited_flags);
1551 			     struct cfg80211_chan_def *chandef,
1554 	return _cfg80211_reg_can_beacon(wiphy, chandef, iftype, true);
1559 				   struct cfg80211_chan_def *chandef,
1574 						   chandef->chan);
1576 	return _cfg80211_reg_can_beacon(wiphy, chandef, iftype, check_no_ir);
1581 				 struct cfg80211_chan_def *chandef)
1588 	return rdev_set_monitor_channel(rdev, chandef);
1632 		return &wdev->u.mesh.chandef;
1634 		return &wdev->u.ibss.chandef;
1636 		return &wdev->u.ocb.chandef;
1639 		return &wdev->links[link_id].ap.chandef;