qcacld-3.0: Add support for gStaKeepAliveMethod ini

Currently the ini gStaKeepAliveMethod doesn't support
Unsolicited ARP response packets. So, add it.

Change-Id: I614e87e7f173ea5c25c34eaf56de0805d37b26a4
CRs-Fixed: 3433020

components/mlme/dispatcher/inc/cfg_mlme_sta.h

@@ -494,12 +494,13 @@
  * <ini>
  * gStaKeepAliveMethod - Which keepalive method to use
  * @Min: 1
- * @Max: 2
+ * @Max: 3
  * @Default: 1
  *
  * This ini determines which keepalive method to use for station interfaces
  *	 1) Use null data packets
  *	 2) Use gratuitous ARP packets
+ *	 3) Use unsolicited ARP response packets
  *
  * Related: gStaKeepAlivePeriod, gApKeepAlivePeriod, gGoKeepAlivePeriod
  *
@@ -512,7 +513,7 @@
 #define CFG_STA_KEEPALIVE_METHOD CFG_INI_INT( \
 			"gStaKeepAliveMethod", \
 			MLME_STA_KEEPALIVE_NULL_DATA, \
-			MLME_STA_KEEPALIVE_GRAT_ARP, \
+			MLME_STA_KEEPALIVE_UNSOLICIT_ARP_RSP, \
 			MLME_STA_KEEPALIVE_NULL_DATA, \
 			CFG_VALUE_OR_DEFAULT, \
 			"Which keepalive method to use")

components/mlme/dispatcher/inc/wlan_mlme_public_struct.h

@@ -1669,12 +1669,14 @@ struct wlan_mlme_nss_chains {
  * @MLME_STA_KEEPALIVE_MIN: ensure KEEPALIVE_NULL or ARP are not values of 0
  * @MLME_STA_KEEPALIVE_NULL_DATA: null data packet
  * @MLME_STA_KEEPALIVE_GRAT_ARP: gratuitous ARP packet
+ * @MLME_STA_KEEPALIVE_UNSOLICIT_ARP_RSP: unsolicited  ARP response packet
  * @MLME_STA_KEEPALIVE_COUNT: number of method options available
  */
 enum station_keepalive_method {
 	MLME_STA_KEEPALIVE_MIN,
 	MLME_STA_KEEPALIVE_NULL_DATA = 1,
 	MLME_STA_KEEPALIVE_GRAT_ARP = 2,
+	MLME_STA_KEEPALIVE_UNSOLICIT_ARP_RSP = 3,
 	/* keep at the end */
 	MLME_STA_KEEPALIVE_COUNT
 };