--- a/nl80211.h
+++ b/nl80211.h
@@ -2299,6 +2299,9 @@ enum nl80211_commands {
  *	This is also used for capability advertisement in the wiphy information,
  *	with the appropriate sub-attributes.
  *
+ * @NL80211_ATTR_WIPHY_ANTENNA_GAIN: Configured antenna gain. Used to reduce
+ *	transmit power to stay within regulatory limits. u32, dBi.
+ *
  * @NUM_NL80211_ATTR: total number of nl80211_attrs available
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
@@ -2748,6 +2751,8 @@ enum nl80211_attrs {
 
 	NL80211_ATTR_PEER_MEASUREMENTS,
 
+	NL80211_ATTR_WIPHY_ANTENNA_GAIN,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,