mlxsw: spectrum_router: Extract mlxsw_sp_ipip_entry_ol_up_event()

The piece of logic to promote decap route, if any, is useful for generic
tunnel updates, not just for handling of NETDEV_UP events on tunnel
interfaces. Extract it to a separate function.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c

@@ -1314,21 +1314,26 @@ static void mlxsw_sp_netdevice_ipip_ol_unreg_event(struct mlxsw_sp *mlxsw_sp,
 		mlxsw_sp_ipip_entry_destroy(mlxsw_sp, ipip_entry);
 }
 
+static void
+mlxsw_sp_ipip_entry_ol_up_event(struct mlxsw_sp *mlxsw_sp,
+				struct mlxsw_sp_ipip_entry *ipip_entry)
+{
+	struct mlxsw_sp_fib_entry *decap_fib_entry;
+
+	decap_fib_entry = mlxsw_sp_ipip_entry_find_decap(mlxsw_sp, ipip_entry);
+	if (decap_fib_entry)
+		mlxsw_sp_ipip_entry_promote_decap(mlxsw_sp, ipip_entry,
+						  decap_fib_entry);
+}
+
 static void mlxsw_sp_netdevice_ipip_ol_up_event(struct mlxsw_sp *mlxsw_sp,
 						struct net_device *ol_dev)
 {
-	struct mlxsw_sp_fib_entry *decap_fib_entry;
 	struct mlxsw_sp_ipip_entry *ipip_entry;
 
 	ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev);
-	if (ipip_entry) {
-		decap_fib_entry = mlxsw_sp_ipip_entry_find_decap(mlxsw_sp,
-								 ipip_entry);
-		if (decap_fib_entry)
-			mlxsw_sp_ipip_entry_promote_decap(mlxsw_sp, ipip_entry,
-							  decap_fib_entry);
-	}
-
+	if (ipip_entry)
+		mlxsw_sp_ipip_entry_ol_up_event(mlxsw_sp, ipip_entry);
 }
 
 static void