mac80211: propagate information about STA WME support down

Add a memeber to the ieee80211_sta structure to indicate whether the STA
supports WME.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

include/net/mac80211.h

@@ -933,6 +933,7 @@ enum set_key_cmd {
  * @aid: AID we assigned to the station if we're an AP
  * @supp_rates: Bitmap of supported rates (per band)
  * @ht_cap: HT capabilities of this STA; restricted to our own TX capabilities
+ * @wme: indicates whether the STA supports WME. Only valid during AP-mode.
  * @drv_priv: data area for driver use, will always be aligned to
  *	sizeof(void *), size is determined in hw information.
  */
@@ -941,6 +942,7 @@ struct ieee80211_sta {
 	u8 addr[ETH_ALEN];
 	u16 aid;
 	struct ieee80211_sta_ht_cap ht_cap;
+	bool wme;
 
 	/* must be last */
 	u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *))));

net/mac80211/cfg.c

@@ -674,8 +674,11 @@ static void sta_apply_parameters(struct ieee80211_local *local,
 
 	if (mask & BIT(NL80211_STA_FLAG_WME)) {
 		sta->flags &= ~WLAN_STA_WME;
-		if (set & BIT(NL80211_STA_FLAG_WME))
+		sta->sta.wme = false;
+		if (set & BIT(NL80211_STA_FLAG_WME)) {
 			sta->flags |= WLAN_STA_WME;
+			sta->sta.wme = true;
+		}
 	}
 
 	if (mask & BIT(NL80211_STA_FLAG_MFP)) {