qca-wifi: Add fdb entry add and refresh API

Add an API for bridge fdb add and refresh.

Change-Id: Ifc8124c344d1b2bfa6c50532c0a12f5692cec625

qca_multi_link/inc/qca_multi_link_tbl.h

@@ -29,6 +29,19 @@
 #include <net/cfg80211.h>
 #include <br_private.h>
 
+/**
+ * qca_multi_link_entry_type - bridge entry type
+ * @QCA_MULTI_LINK_ENTRY_USER_ADDED: Entry added by user
+ * @QCA_MULTI_LINK_ENTRY_LOCAL: Local permanent bridge entry
+ * @QCA_MULTI_LINK_ENTRY_STATIC: Permanent non-ARP type entry
+ */
+typedef enum qca_multi_link_entry_type {
+	QCA_MULTI_LINK_ENTRY_NONE = 0,
+	QCA_MULTI_LINK_ENTRY_USER_ADDED,
+	QCA_MULTI_LINK_ENTRY_LOCAL,
+	QCA_MULTI_LINK_ENTRY_STATIC,
+} qca_multi_link_entry_type_t;
+
 typedef struct qca_multi_link_tbl_entry {
 	struct wireless_dev *qal_fdb_ieee80211_ptr;
 	struct net_device *qal_fdb_dev;
@@ -58,6 +71,17 @@ int qca_multi_link_tbl_get_eth_entries(struct net_device *net_dev,
  */
 struct net_device *qca_multi_link_tbl_find_sta_or_ap(struct net_device *net_dev, uint8_t dev_type);
 
+/**
+ *
+ * qca_multi_link_tbl_add_or_refresh_entry() - Add or refresh a bridge entry
+ *
+ * To be called from the code with a valid netdevice
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS qca_multi_link_tbl_add_or_refresh_entry(struct net_device *net_dev, uint8_t *addr,
+							qca_multi_link_entry_type_t entry_type);
+
 /**
  *
  * qca_multi_link_tbl_delete_entry() - Delete a non-local bridge fdb entry

qca_multi_link/src/qca_multi_link_tbl.c

@@ -129,6 +129,36 @@ struct net_device *qca_multi_link_tbl_find_sta_or_ap(struct net_device *net_dev,
 
 qdf_export_symbol(qca_multi_link_tbl_find_sta_or_ap);
 
+QDF_STATUS qca_multi_link_tbl_add_or_refresh_entry(struct net_device *net_dev, uint8_t *addr,
+							qca_multi_link_entry_type_t entry_type)
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 24)
+	int status;
+	uint16_t state = NUD_NONE;
+
+	if (entry_type == QCA_MULTI_LINK_ENTRY_USER_ADDED) {
+		state = NUD_REACHABLE;
+	} else if (entry_type == QCA_MULTI_LINK_ENTRY_LOCAL) {
+		state = NUD_PERMANENT;
+	} else if (entry_type == QCA_MULTI_LINK_ENTRY_STATIC) {
+		state = NUD_NOARP;
+	}
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 24)
+	status = br_fdb_add_or_refresh_by_netdev(net_dev, addr, 0, state);
+	if (status < 0) {
+		return QDF_STATUS_E_FAILURE;
+	}
+#else
+	/* Use 5.4-specific API */
+	qdf_info("Needs alternative implementation");
+#endif
+	return QDF_STATUS_SUCCESS;
+}
+
+qdf_export_symbol(qca_multi_link_tbl_add_or_refresh_entry);
+
 QDF_STATUS qca_multi_link_tbl_delete_entry(struct net_device *net_dev, uint8_t *addr)
 {
 #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 24)