mlxsw: spectrum: Store pointer to default port VLAN in port struct

Subsequent patches will need to access the default port VLAN. Since this
VLAN will exist throughout the lifetime of the port, simply store it in
the port's struct.
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Reviewed-by: NPetr Machata <petrm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

@@ -3201,6 +3201,7 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 		err = PTR_ERR(mlxsw_sp_port_vlan);
 		goto err_port_vlan_create;
 	}
+	mlxsw_sp_port->default_vlan = mlxsw_sp_port_vlan;
 
 	mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
 	mlxsw_sp->ports[local_port] = mlxsw_sp_port;

drivers/net/ethernet/mellanox/mlxsw/spectrum.h

@@ -242,6 +242,7 @@ struct mlxsw_sp_port {
 	} periodic_hw_stats;
 	struct mlxsw_sp_port_sample *sample;
 	struct list_head vlans_list;
+	struct mlxsw_sp_port_vlan *default_vlan;
 	struct mlxsw_sp_qdisc *root_qdisc;
 	struct mlxsw_sp_qdisc *tclass_qdiscs;
 	unsigned acl_rule_count;