qcacmn: add CDP function to process CP peer delete response

Add a CDP function which processes the peer delete response
and deletes the static ast entry for the peer

Change-Id: Id646979ed07bd82609ca08e7ef3201382d07b1de
CRs-fixed: 2385115

dp/inc/cdp_txrx_cmn.h

@@ -363,6 +363,34 @@ static inline void cdp_peer_setup
 			peer);
 }
 
+/*
+ * cdp_cp_peer_del_response - Call the peer delete response handler
+ * @soc: Datapath SOC handle
+ * @vdev_hdl: virtual device object
+ * @peer_mac_addr: Mac address of the peer
+ *
+ * Return: void
+ */
+static inline void cdp_cp_peer_del_response
+	(ol_txrx_soc_handle soc,
+	 struct cdp_vdev *vdev_hdl,
+	 uint8_t *peer_mac_addr)
+{
+	if (!soc || !soc->ops) {
+		QDF_TRACE(QDF_MODULE_ID_CDP, QDF_TRACE_LEVEL_DEBUG,
+			  "%s: Invalid Instance:", __func__);
+		QDF_BUG(0);
+		return;
+	}
+
+	if (!soc->ops->cmn_drv_ops ||
+	    !soc->ops->cmn_drv_ops->txrx_cp_peer_del_response)
+		return;
+
+	return soc->ops->cmn_drv_ops->txrx_cp_peer_del_response(soc,
+								vdev_hdl,
+								peer_mac_addr);
+}
 /**
  * cdp_peer_get_ast_info_by_soc() - search the soc AST hash table
  *                                  and return ast entry information

dp/inc/cdp_txrx_ops.h

@@ -99,6 +99,10 @@ struct cdp_cmn_ops {
 	void (*txrx_peer_setup)
 		(struct cdp_vdev *vdev_hdl, void *peer_hdl);
 
+	void (*txrx_cp_peer_del_response)
+		(ol_txrx_soc_handle soc, struct cdp_vdev *vdev_hdl,
+		 uint8_t *peer_mac_addr);
+
 	void (*txrx_peer_teardown)
 		(struct cdp_vdev *vdev_hdl, void *peer_hdl);
 

dp/wifi3.0/dp_main.c

@@ -5163,6 +5163,67 @@ static void dp_peer_setup_wifi3(struct cdp_vdev *vdev_hdl, void *peer_hdl)
 	return;
 }
 
+/*
+ * dp_cp_peer_del_resp_handler - Handle the peer delete response
+ * @soc_hdl: Datapath SOC handle
+ * @vdev_hdl: virtual device object
+ * @mac_addr: Mac address of the peer
+ *
+ * Return: void
+ */
+static void dp_cp_peer_del_resp_handler(struct cdp_soc_t *soc_hdl,
+					struct cdp_vdev *vdev_hdl,
+					uint8_t *mac_addr)
+{
+	struct dp_soc *soc = (struct dp_soc *)soc_hdl;
+	struct dp_ast_entry  *ast_entry = NULL;
+	struct dp_vdev *vdev = (struct dp_vdev *)vdev_hdl;
+	txrx_ast_free_cb cb = NULL;
+	void *cookie;
+
+	qdf_spin_lock_bh(&soc->ast_lock);
+
+	if (soc->ast_override_support)
+		ast_entry =
+			dp_peer_ast_hash_find_by_pdevid(soc, mac_addr,
+							vdev->pdev->pdev_id);
+	else
+		ast_entry = dp_peer_ast_hash_find_soc(soc, mac_addr);
+
+	/* in case of qwrap we have multiple BSS peers
+	 * with same mac address
+	 *
+	 * AST entry for this mac address will be created
+	 * only for one peer hence it will be NULL here
+	 */
+	if (!ast_entry || ast_entry->peer || !ast_entry->delete_in_progress) {
+		qdf_spin_unlock_bh(&soc->ast_lock);
+		return;
+	}
+
+	if (ast_entry->is_mapped)
+		soc->ast_table[ast_entry->ast_idx] = NULL;
+
+	DP_STATS_INC(soc, ast.deleted, 1);
+	dp_peer_ast_hash_remove(soc, ast_entry);
+
+	cb = ast_entry->callback;
+	cookie = ast_entry->cookie;
+	ast_entry->callback = NULL;
+	ast_entry->cookie = NULL;
+
+	soc->num_ast_entries--;
+	qdf_spin_unlock_bh(&soc->ast_lock);
+
+	if (cb) {
+		cb(soc->ctrl_psoc,
+		   soc,
+		   cookie,
+		   CDP_TXRX_AST_DELETED);
+	}
+	qdf_mem_free(ast_entry);
+}
+
 /*
  * dp_set_vdev_tx_encap_type() - set the encap type of the vdev
  * @vdev_handle: virtual device object
@@ -9804,6 +9865,8 @@ static struct cdp_cmn_ops dp_ops_cmn = {
 	.set_vdev_pcp_tid_map = dp_set_vdev_pcp_tid_map_wifi3,
 	.set_vdev_tidmap_prty = dp_set_vdev_tidmap_prty_wifi3,
 	.set_vdev_tidmap_tbl_id = dp_set_vdev_tidmap_tbl_id_wifi3,
+
+	.txrx_cp_peer_del_response = dp_cp_peer_del_resp_handler,
 };
 
 static struct cdp_ctrl_ops dp_ops_ctrl = {

dp/wifi3.0/dp_peer.c

@@ -360,8 +360,8 @@ static inline void dp_peer_ast_hash_add(struct dp_soc *soc,
  *
  * Return: None
  */
-static inline void dp_peer_ast_hash_remove(struct dp_soc *soc,
-		struct dp_ast_entry *ase)
+void dp_peer_ast_hash_remove(struct dp_soc *soc,
+			     struct dp_ast_entry *ase)
 {
 	unsigned index;
 	struct dp_ast_entry *tmpase;
@@ -823,8 +823,12 @@ add_ast_entry:
  */
 void dp_peer_del_ast(struct dp_soc *soc, struct dp_ast_entry *ast_entry)
 {
-	struct dp_peer *peer = ast_entry->peer;
-	uint16_t peer_id = peer->peer_ids[0];
+	struct dp_peer *peer;
+
+	if (!ast_entry)
+		return;
+
+	peer =  ast_entry->peer;
 
 	dp_peer_ast_send_wds_del(soc, ast_entry);
 
@@ -836,7 +840,7 @@ void dp_peer_del_ast(struct dp_soc *soc, struct dp_ast_entry *ast_entry)
 	 * if peer_id is invalid we did not get the peer map event
 	 * for the peer free ast entry from here only in this case
 	 */
-	if (soc->is_peer_map_unmap_v2 && (peer_id != HTT_INVALID_PEER)) {
+	if (soc->is_peer_map_unmap_v2) {
 
 		/*
 		 * For HM_SEC and SELF type we do not receive unmap event
@@ -853,10 +857,10 @@ void dp_peer_del_ast(struct dp_soc *soc, struct dp_ast_entry *ast_entry)
 	 */
 	if (ast_entry->is_mapped)
 		soc->ast_table[ast_entry->ast_idx] = NULL;
-	TAILQ_REMOVE(&peer->ast_entry_list, ast_entry, ase_list_elem);
 
-	if (ast_entry == peer->self_ast_entry)
-		peer->self_ast_entry = NULL;
+	/* SELF and STATIC entries are removed in teardown itself */
+	if (ast_entry->next_hop)
+		TAILQ_REMOVE(&peer->ast_entry_list, ast_entry, ase_list_elem);
 
 	DP_STATS_INC(soc, ast.deleted, 1);
 	dp_peer_ast_hash_remove(soc, ast_entry);
@@ -1053,6 +1057,13 @@ void dp_peer_ast_send_wds_del(struct dp_soc *soc,
 						    ast_entry->type);
 	}
 
+	/* Remove SELF and STATIC entries in teardown itself */
+	if (!ast_entry->next_hop) {
+		TAILQ_REMOVE(&peer->ast_entry_list, ast_entry, ase_list_elem);
+		peer->self_ast_entry = NULL;
+		ast_entry->peer = NULL;
+	}
+
 	ast_entry->delete_in_progress = true;
 }
 
@@ -1503,54 +1514,27 @@ dp_rx_peer_unmap_handler(void *soc_handle, uint16_t peer_id,
 
 	/* If V2 Peer map messages are enabled AST entry has to be freed here
 	 */
-	if (soc->is_peer_map_unmap_v2) {
+	if (soc->is_peer_map_unmap_v2 && is_wds) {
 
 		qdf_spin_lock_bh(&soc->ast_lock);
 		ast_entry = dp_peer_ast_list_find(soc, peer,
 						  mac_addr);
+		qdf_spin_unlock_bh(&soc->ast_lock);
 
-		if (!ast_entry) {
-			/* in case of qwrap we have multiple BSS peers
-			 * with same mac address
-			 *
-			 * AST entry for this mac address will be created
-			 * only for one peer
-			 */
-			if (peer->vdev->proxysta_vdev) {
-				qdf_spin_unlock_bh(&soc->ast_lock);
-				goto peer_unmap;
-			}
-
-			/* Ideally we should not enter this case where
-			 * ast_entry is not present in host table and
-			 * we received a unmap event
-			 */
-			QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_FATAL,
-				  "%s:%d AST entry not found with peer %pK peer_id %u peer_mac %pM mac_addr %pM vdev_id %u next_hop %u\n",
-				  __func__, __LINE__, peer, peer->peer_ids[0],
-				  peer->mac_addr.raw, mac_addr, vdev_id,
-				  is_wds);
-
-			qdf_spin_unlock_bh(&soc->ast_lock);
-
-			if (!is_wds)
-				goto peer_unmap;
-
+		if (ast_entry) {
+			dp_peer_ast_free_entry(soc, ast_entry);
 			return;
 		}
-		qdf_spin_unlock_bh(&soc->ast_lock);
 
-		/* Reuse the AST entry if delete_in_progress
-		 * not set
-		 */
-		if (ast_entry->delete_in_progress)
-			dp_peer_ast_free_entry(soc, ast_entry);
+		QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_FATAL,
+			  "%s:%d AST entry not found with peer %pK peer_id %u peer_mac %pM mac_addr %pM vdev_id %u next_hop %u\n",
+			  __func__, __LINE__, peer, peer->peer_ids[0],
+			  peer->mac_addr.raw, mac_addr, vdev_id,
+			  is_wds);
 
-		if (is_wds)
-			return;
+		return;
 	}
 
-peer_unmap:
 	QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_INFO_HIGH,
 		"peer_unmap_event (soc:%pK) peer_id %d peer %pK",
 		soc, peer_id, peer);

dp/wifi3.0/dp_peer.h

@@ -145,6 +145,9 @@ void dp_peer_free_hmwds_cb(void *ctrl_psoc,
 			   void *cookie,
 			   enum cdp_ast_free_status status);
 
+void dp_peer_ast_hash_remove(struct dp_soc *soc,
+			     struct dp_ast_entry *ase);
+
 /*
  * dp_get_vdev_from_soc_vdev_id_wifi3() -
  * Returns vdev object given the vdev id