qcacmn: Delete existing AST on different radio

In STA roaming scenarios it is possible that an
AST entry for a given MAC address already exist
on the other radio

Delete the existing WDS AST entry on other radio
if present before adding the new wds entry on the
current radio as part of WDS source port learning

Change-Id: I15ef79be0441f3b27fd55e728f5bb27b073c6469
CRs-Fixed: 2334625

dp/wifi3.0/dp_peer.c

@@ -550,30 +550,8 @@ int dp_peer_add_ast(struct dp_soc *soc,
 		ast_entry = dp_peer_ast_hash_find_soc(soc, mac_addr);
 
 		if (ast_entry) {
-			if (ast_entry->type == CDP_TXRX_AST_TYPE_MEC) {
+			if (ast_entry->type == CDP_TXRX_AST_TYPE_MEC)
 				ast_entry->is_active = TRUE;
-				qdf_spin_unlock_bh(&soc->ast_lock);
-				return 0;
-			}
-
-			/*
-			 * WAR for HK 1.x AST issue
-			 * If an AST entry with same mac address already
-			 * exists and is mapped to a different radio, and
-			 * if the current radio is  primary radio , delete
-			 * the existing AST entry and return.
-			 *
-			 * New AST entry will be created again on next
-			 * SA_invalid frame
-			 */
-			if ((ast_entry->pdev_id != vdev->pdev->pdev_id) &&
-			    vdev->pdev->is_primary) {
-				QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_ERROR,
-					  "Deleting ast_pdev=%d pdev=%d addr=%pM\n",
-					  ast_entry->pdev_id,
-					  vdev->pdev->pdev_id, mac_addr);
-				dp_peer_del_ast(soc, ast_entry);
-			}
 
 			qdf_spin_unlock_bh(&soc->ast_lock);
 			return 0;

dp/wifi3.0/dp_rx.h

@@ -489,11 +489,22 @@ dp_rx_wds_srcport_learn(struct dp_soc *soc,
 		    (ast->type != CDP_TXRX_AST_TYPE_SELF) &&
 			(ast->type != CDP_TXRX_AST_TYPE_STA_BSS)) {
 			if (ast->pdev_id != ta_peer->vdev->pdev->pdev_id) {
-				ret = dp_peer_add_ast(soc,
-						      ta_peer, wds_src_mac,
-						      CDP_TXRX_AST_TYPE_WDS,
-						      flags);
+				/* This case is when a STA roams from one
+				 * repeater to another repeater, but these
+				 * repeaters are connected to root AP on
+				 * different radios.
+				 * Ex: rptr1 connected to ROOT AP over 5G
+				 * and rptr2 connected to ROOT AP over 2G
+				 * radio
+				 */
+				qdf_spin_lock_bh(&soc->ast_lock);
+				dp_peer_del_ast(soc, ast);
+				qdf_spin_unlock_bh(&soc->ast_lock);
 			} else {
+				/* this case is when a STA roams from one
+				 * reapter to another repeater, but inside
+				 * same radio.
+				 */
 				qdf_spin_lock_bh(&soc->ast_lock);
 				dp_peer_update_ast(soc, ta_peer, ast, flags);
 				qdf_spin_unlock_bh(&soc->ast_lock);