mlxsw: Remember untagged VLANs

When a vlan is been configured, remeber the untagged mode of the vlan.
When displaying the list of configured VLANs, show the untagged attribute.

Signed-off-by: Elad Raz <eladr@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.c

@@ -1370,6 +1370,11 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port)
 		err = -ENOMEM;
 		goto err_port_active_vlans_alloc;
 	}
+	mlxsw_sp_port->untagged_vlans = kzalloc(bytes, GFP_KERNEL);
+	if (!mlxsw_sp_port->untagged_vlans) {
+		err = -ENOMEM;
+		goto err_port_untagged_vlans_alloc;
+	}
 	INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
 
 	mlxsw_sp_port->pcpu_stats =
@@ -1472,6 +1477,8 @@ err_port_module_check:
 err_dev_addr_init:
 	free_percpu(mlxsw_sp_port->pcpu_stats);
 err_alloc_stats:
+	kfree(mlxsw_sp_port->untagged_vlans);
+err_port_untagged_vlans_alloc:
 	kfree(mlxsw_sp_port->active_vlans);
 err_port_active_vlans_alloc:
 	free_netdev(dev);
@@ -1505,6 +1512,7 @@ static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
 	mlxsw_sp_port_vports_fini(mlxsw_sp_port);
 	mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
 	free_percpu(mlxsw_sp_port->pcpu_stats);
+	kfree(mlxsw_sp_port->untagged_vlans);
 	kfree(mlxsw_sp_port->active_vlans);
 	free_netdev(mlxsw_sp_port->dev);
 }

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

@@ -144,6 +144,7 @@ struct mlxsw_sp_port {
 	} vport;
 	/* 802.1Q bridge VLANs */
 	unsigned long *active_vlans;
+	unsigned long *untagged_vlans;
 	/* VLAN interfaces */
 	struct list_head vports_list;
 };

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

@@ -526,8 +526,13 @@ static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 	}
 
 	/* Changing activity bits only if HW operation succeded */
-	for (vid = vid_begin; vid <= vid_end; vid++)
+	for (vid = vid_begin; vid <= vid_end; vid++) {
 		set_bit(vid, mlxsw_sp_port->active_vlans);
+		if (flag_untagged)
+			set_bit(vid, mlxsw_sp_port->untagged_vlans);
+		else
+			clear_bit(vid, mlxsw_sp_port->untagged_vlans);
+	}
 
 	/* STP state change must be done after we set active VLANs */
 	err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
@@ -954,6 +959,8 @@ static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
 		vlan->flags = 0;
 		if (vid == mlxsw_sp_port->pvid)
 			vlan->flags |= BRIDGE_VLAN_INFO_PVID;
+		if (test_bit(vid, mlxsw_sp_port->untagged_vlans))
+			vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
 		vlan->vid_begin = vid;
 		vlan->vid_end = vid;
 		err = cb(&vlan->obj);