diff --git a/src/common/qca-vendor.h b/src/common/qca-vendor.h
index ea68beceb..bf29f12ba 100644
--- a/src/common/qca-vendor.h
+++ b/src/common/qca-vendor.h
@@ -2183,6 +2183,18 @@ enum qca_wlan_vendor_attr_config {
 	 */
 	QCA_WLAN_VENDOR_ATTR_CONFIG_RX_STBC = 69,
 
+	/* 8-bit unsigned value. This attribute is used to dynamically configure
+	 * the number of spatial streams. When configured in the disconnected
+	 * state, the updated configuration will be considered for the
+	 * immediately following connection attempt. If the NSS is updated after
+	 * the connection, the updated NSS value is notified to the peer using
+	 * the Operating Mode Notification/Spatial Multiplexing Power Save
+	 * frame. The updated NSS value after the connection shall not be
+	 * greater than the one negotiated during the connection. Any such
+	 * higher value configuration shall be returned with a failure.
+	 */
+	QCA_WLAN_VENDOR_ATTR_CONFIG_NSS = 70,
+
 	/* keep last */
 	QCA_WLAN_VENDOR_ATTR_CONFIG_AFTER_LAST,
 	QCA_WLAN_VENDOR_ATTR_CONFIG_MAX =