From: Ido Schimmel <idosch@mellanox.com>
Date: Tue, 20 Feb 2018 08:45:12 +0100
Subject: mlxsw: spectrum_switchdev: Allow port enslavement to a VLAN-unaware
 bridge
Patch-mainline: v4.17-rc1
Git-commit: 65b53bfd497b052277f89afb3839ace38190974c
References: bsc#1112374

Up until now we only allowed VLAN devices to be put in a VLAN-unaware
bridge, but some users need the ability to enslave physical ports as
well.

This is achieved by mapping the port and VID 1 to the bridge's vFID,
instead of the port and the VID used by the VLAN device.

The above is valid because as long as the port is not enslaved to a
bridge, VID 1 is guaranteed to be configured as PVID and egress
untagged.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Tested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c |   12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -1907,14 +1907,10 @@ mlxsw_sp_bridge_8021d_port_join(struct m
 				struct netlink_ext_ack *extack)
 {
 	struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
+	struct net_device *dev = bridge_port->dev;
 	u16 vid;
 
-	if (!is_vlan_dev(bridge_port->dev)) {
-		NL_SET_ERR_MSG_MOD(extack, "Only VLAN devices can be enslaved to a VLAN-unaware bridge");
-		return -EINVAL;
-	}
-	vid = vlan_dev_vlan_id(bridge_port->dev);
-
+	vid = is_vlan_dev(dev) ? vlan_dev_vlan_id(dev) : 1;
 	mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
 	if (WARN_ON(!mlxsw_sp_port_vlan))
 		return -EINVAL;
@@ -1937,8 +1933,10 @@ mlxsw_sp_bridge_8021d_port_leave(struct
 				 struct mlxsw_sp_port *mlxsw_sp_port)
 {
 	struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
-	u16 vid = vlan_dev_vlan_id(bridge_port->dev);
+	struct net_device *dev = bridge_port->dev;
+	u16 vid;
 
+	vid = is_vlan_dev(dev) ? vlan_dev_vlan_id(dev) : 1;
 	mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
 	if (WARN_ON(!mlxsw_sp_port_vlan))
 		return;