---

yaml
---
r: 352726
b: refs/heads/master
c: c7a6ee2
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 30eb1dc2c43039e0fe278e6f3a288de9f216d70d
+refs/heads/master: c7a6ee27abd46247c1c7edfc49fb935138da7875

trunk/include/net/cfg80211.h

@@ -100,6 +100,16 @@ enum ieee80211_band {
  * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel
  * 	is not permitted.
  * @IEEE80211_CHAN_NO_OFDM: OFDM is not allowed on this channel.
+ * @IEEE80211_CHAN_NO_80MHZ: If the driver supports 80 MHz on the band,
+ *	this flag indicates that an 80 MHz channel cannot use this
+ *	channel as the control or any of the secondary channels.
+ *	This may be due to the driver or due to regulatory bandwidth
+ *	restrictions.
+ * @IEEE80211_CHAN_NO_160MHZ: If the driver supports 160 MHz on the band,
+ *	this flag indicates that an 160 MHz channel cannot use this
+ *	channel as the control or any of the secondary channels.
+ *	This may be due to the driver or due to regulatory bandwidth
+ *	restrictions.
  */
 enum ieee80211_channel_flags {
 	IEEE80211_CHAN_DISABLED		= 1<<0,
@@ -109,6 +119,8 @@ enum ieee80211_channel_flags {
 	IEEE80211_CHAN_NO_HT40PLUS	= 1<<4,
 	IEEE80211_CHAN_NO_HT40MINUS	= 1<<5,
 	IEEE80211_CHAN_NO_OFDM		= 1<<6,
+	IEEE80211_CHAN_NO_80MHZ		= 1<<7,
+	IEEE80211_CHAN_NO_160MHZ	= 1<<8,
 };
 
 #define IEEE80211_CHAN_NO_HT40 \

trunk/net/wireless/chan.c

@@ -375,21 +375,32 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
 	case NL80211_CHAN_WIDTH_80:
 		if (!vht_cap->vht_supported)
 			return false;
+		prohibited_flags |= IEEE80211_CHAN_NO_80MHZ;
 		width = 80;
 		break;
 	case NL80211_CHAN_WIDTH_160:
 		if (!vht_cap->vht_supported)
 			return false;
 		if (!(vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ))
 			return false;
+		prohibited_flags |= IEEE80211_CHAN_NO_160MHZ;
 		width = 160;
 		break;
 	default:
 		WARN_ON_ONCE(1);
 		return false;
 	}
 
-	/* TODO: missing regulatory check on 80/160 bandwidth */
+	/*
+	 * TODO: What if there are only certain 80/160/80+80 MHz channels
+	 *	 allowed by the driver, or only certain combinations?
+	 *	 For 40 MHz the driver can set the NO_HT40 flags, but for
+	 *	 80/160 MHz and in particular 80+80 MHz this isn't really
+	 *	 feasible and we only have NO_80MHZ/NO_160MHZ so far but
+	 *	 no way to cover 80+80 MHz or more complex restrictions.
+	 *	 Note that such restrictions also need to be advertised to
+	 *	 userspace, for example for P2P channel selection.
+	 */
 
 	if (width > 20)
 		prohibited_flags |= IEEE80211_CHAN_NO_OFDM;

trunk/net/wireless/reg.c

@@ -866,6 +866,10 @@ static void handle_channel(struct wiphy *wiphy,
 
 	if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(40))
 		bw_flags = IEEE80211_CHAN_NO_HT40;
+	if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(80))
+		bw_flags |= IEEE80211_CHAN_NO_80MHZ;
+	if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(160))
+		bw_flags |= IEEE80211_CHAN_NO_160MHZ;
 
 	if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
 	    request_wiphy && request_wiphy == wiphy &&
@@ -1264,6 +1268,10 @@ static void handle_channel_custom(struct wiphy *wiphy,
 
 	if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(40))
 		bw_flags = IEEE80211_CHAN_NO_HT40;
+	if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(80))
+		bw_flags |= IEEE80211_CHAN_NO_80MHZ;
+	if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(160))
+		bw_flags |= IEEE80211_CHAN_NO_160MHZ;
 
 	chan->flags |= map_regdom_flags(reg_rule->flags) | bw_flags;
 	chan->max_antenna_gain = (int) MBI_TO_DBI(power_rule->max_antenna_gain);