mac80211: disable VHT for TDLS

TDLS VHT support requires some more information elements during setup.
While these are not there, mask out the peer's VHT capabilities so that
VHT rates are not mistakenly used.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/vht.c

@@ -129,6 +129,10 @@ ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
 	if (!vht_cap_ie || !sband->vht_cap.vht_supported)
 		return;
 
+	/* don't support VHT for TDLS peers for now */
+	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
+		return;
+
 	/*
 	 * A VHT STA must support 40 MHz, but if we verify that here
 	 * then we break a few things - some APs (e.g. Netgear R6300v2