mlxsw: Save EtherType as part of mlxsw_sp_nve_params

Add EtherType field to mlxsw_sp_nve_params struct.
Set it when VxLAN device is added to bridge device.

This field is needed to configure which EtherType will be used when
VLAN is pushed at ingress of the tunnel port.

Use ETH_P_8021Q for tunnel port enslaved to 802.1d and 802.1q bridges.
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -1202,6 +1202,7 @@ struct mlxsw_sp_nve_params {
 	enum mlxsw_sp_nve_type type;
 	__be32 vni;
 	const struct net_device *dev;
+	u16 ethertype;
 };
 
 extern const struct mlxsw_sp_nve_ops *mlxsw_sp1_nve_ops_arr[];

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

@@ -2055,7 +2055,8 @@ mlxsw_sp_bridge_8021q_port_leave(struct mlxsw_sp_bridge_device *bridge_device,
 static int
 mlxsw_sp_bridge_vlan_aware_vxlan_join(struct mlxsw_sp_bridge_device *bridge_device,
 				      const struct net_device *vxlan_dev,
-				      u16 vid, struct netlink_ext_ack *extack)
+				      u16 vid, u16 ethertype,
+				      struct netlink_ext_ack *extack)
 {
 	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev);
 	struct vxlan_dev *vxlan = netdev_priv(vxlan_dev);
@@ -2063,6 +2064,7 @@ mlxsw_sp_bridge_vlan_aware_vxlan_join(struct mlxsw_sp_bridge_device *bridge_devi
 		.type = MLXSW_SP_NVE_TYPE_VXLAN,
 		.vni = vxlan->cfg.vni,
 		.dev = vxlan_dev,
+		.ethertype = ethertype,
 	};
 	struct mlxsw_sp_fid *fid;
 	int err;
@@ -2107,7 +2109,7 @@ mlxsw_sp_bridge_8021q_vxlan_join(struct mlxsw_sp_bridge_device *bridge_device,
 				 struct netlink_ext_ack *extack)
 {
 	return mlxsw_sp_bridge_vlan_aware_vxlan_join(bridge_device, vxlan_dev,
-						     vid, extack);
+						     vid, ETH_P_8021Q, extack);
 }
 
 static struct net_device *
@@ -2240,6 +2242,7 @@ mlxsw_sp_bridge_8021d_vxlan_join(struct mlxsw_sp_bridge_device *bridge_device,
 		.type = MLXSW_SP_NVE_TYPE_VXLAN,
 		.vni = vxlan->cfg.vni,
 		.dev = vxlan_dev,
+		.ethertype = ETH_P_8021Q,
 	};
 	struct mlxsw_sp_fid *fid;
 	int err;