AP: Unset HT capabilities for an HT association request without WMM

HT requires QoS/WMM, so unset HT capabilities for a station
whose association request does not include a valid WMM IE.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>

src/ap/ieee802_11_ht.c

@@ -312,10 +312,14 @@ void hostapd_2040_coex_action(struct hostapd_data *hapd,
 u16 copy_sta_ht_capab(struct hostapd_data *hapd, struct sta_info *sta,
 		      const u8 *ht_capab, size_t ht_capab_len)
 {
-	/* Disable HT caps for STAs associated to no-HT BSSes. */
+	/*
+	 * Disable HT caps for STAs associated to no-HT BSSes, or for stations
+	 * that did not specify a valid WMM IE in the (Re)Association Request
+	 * frame.
+	 */
 	if (!ht_capab ||
 	    ht_capab_len < sizeof(struct ieee80211_ht_capabilities) ||
-	    hapd->conf->disable_11n) {
+	    !(sta->flags & WLAN_STA_WMM) || hapd->conf->disable_11n) {
 		sta->flags &= ~WLAN_STA_HT;
 		os_free(sta->ht_capabilities);
 		sta->ht_capabilities = NULL;