nl80211/cfg80211: add WIPHY_FLAG_AP_UAPSD flag

add WIPHY_FLAG_AP_UAPSD flag to indicate uapsd support on
AP mode.

Advertise it to userspace by including a new
NL80211_ATTR_SUPPORT_AP_UAPSD attribute.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index f2d75e3..387e6e2 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -1044,6 +1044,8 @@
  *
  * @NL80211_ATTR_STA_WME: Nested attribute containing the wme configuration
  *	of the station, see &enum nl80211_sta_wme_attr.
+ * @NL80211_ATTR_SUPPORT_AP_UAPSD: the device supports uapsd when working
+ *	as AP.
  *
  * @NL80211_ATTR_ROAM_SUPPORT: Indicates whether the firmware is capable of
  *	roaming to another AP in the same ESS if the signal lever is low.
@@ -1259,6 +1261,7 @@
 	NL80211_ATTR_IE_ASSOC_RESP,
 
 	NL80211_ATTR_STA_WME,
+	NL80211_ATTR_SUPPORT_AP_UAPSD,
 
 	NL80211_ATTR_ROAM_SUPPORT,
 
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 53609de..01c6bde 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1621,6 +1621,7 @@
  * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans.
  * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the
  *	firmware.
+ * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP.
  */
 enum wiphy_flags {
 	WIPHY_FLAG_CUSTOM_REGULATORY		= BIT(0),
@@ -1636,6 +1637,7 @@
 	WIPHY_FLAG_SUPPORTS_SCHED_SCAN		= BIT(11),
 	WIPHY_FLAG_ENFORCE_COMBINATIONS		= BIT(12),
 	WIPHY_FLAG_SUPPORTS_FW_ROAM		= BIT(13),
+	WIPHY_FLAG_AP_UAPSD			= BIT(14),
 };
 
 /**