| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.14 106/151] net/mlx5e: Switchdev representors are not vlan challenged | Date | Mon, 18 Oct 2021 15:24:45 +0200 |
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From: Saeed Mahameed <saeedm@nvidia.com>
commit b2107cdc43d8601f2cadfba990ae844cc1f44e68 upstream.
Before this patch, mlx5 representors advertised the NETIF_F_VLAN_CHALLENGED bit, this could lead to missing features when using reps with vxlan/bridge and maybe other virtual interfaces, when such interfaces inherit this bit and block vlan usage in their topology.
Example: $ip link add dev bridge type bridge # add representor interface to the bridge $ip link set dev pf0hpf master $ip link add link bridge name vlan10 type vlan id 10 protocol 802.1q Error: 8021q: VLANs not supported on device.
Reps are perfectly capable of handling vlan traffic, although they don't implement vlan_{add,kill}_vid ndos, hence, remove NETIF_F_VLAN_CHALLENGED advertisement.
Fixes: cb67b832921c ("net/mlx5e: Introduce SRIOV VF representors") Reported-by: Roopa Prabhu <roopa@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Reviewed-by: Roi Dayan <roid@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 1 - 1 file changed, 1 deletion(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c @@ -611,7 +611,6 @@ static void mlx5e_build_rep_netdev(struc netdev->hw_features |= NETIF_F_RXCSUM; netdev->features |= netdev->hw_features; - netdev->features |= NETIF_F_VLAN_CHALLENGED; netdev->features |= NETIF_F_NETNS_LOCAL; }
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