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IB/mlx5: Replace tunnel mpls capability bits for tunnel_offloads

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Until now the flex parser capability was used in ib_query_device() to
indicate tunnel_offloads_caps support for mpls_over_gre/mpls_over_udp.

Newer devices and firmware will have configurations with the flexparser
but without mpls support.

Testing for the flex parser capability was a mistake, the tunnel_stateless
capability was intended for detecting mpls and was introduced at the same
time as the flex parser capability.

Otherwise userspace will be incorrectly informed that a future device
supports MPLS when it does not.

Link: https://lore.kernel.org/r/20200305123841.196086-1-leon@kernel.org
Cc: <stable@vger.kernel.org> # 4.17
Fixes: e818e255a5 ("IB/mlx5: Expose MPLS related tunneling offloads")
Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Ariel Levkovich <lariel@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Alex Vesker 2020-03-05 14:38:41 +02:00 committed by Jason Gunthorpe
parent 0897f301bc
commit 41e684ef3f
2 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/infiniband/hw/mlx5/main.c
View File

@ -1192,12 +1192,10 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
if (MLX5_CAP_ETH(mdev, tunnel_stateless_gre))
resp.tunnel_offloads_caps |=
MLX5_IB_TUNNELED_OFFLOADS_GRE;
if (MLX5_CAP_GEN(mdev, flex_parser_protocols) &
MLX5_FLEX_PROTO_CW_MPLS_GRE)
if (MLX5_CAP_ETH(mdev, tunnel_stateless_mpls_over_gre))
resp.tunnel_offloads_caps |=
MLX5_IB_TUNNELED_OFFLOADS_MPLS_GRE;
if (MLX5_CAP_GEN(mdev, flex_parser_protocols) &
MLX5_FLEX_PROTO_CW_MPLS_UDP)
if (MLX5_CAP_ETH(mdev, tunnel_stateless_mpls_over_udp))
resp.tunnel_offloads_caps |=
MLX5_IB_TUNNELED_OFFLOADS_MPLS_UDP;
}

6
include/linux/mlx5/mlx5_ifc.h
View File

@ -877,7 +877,11 @@ struct mlx5_ifc_per_protocol_networking_offload_caps_bits {
u8 swp_csum[0x1];
u8 swp_lso[0x1];
u8 cqe_checksum_full[0x1];
u8 reserved_at_24[0x5];
u8 tunnel_stateless_geneve_tx[0x1];
u8 tunnel_stateless_mpls_over_udp[0x1];
u8 tunnel_stateless_mpls_over_gre[0x1];
u8 tunnel_stateless_vxlan_gpe[0x1];
u8 tunnel_stateless_ipv4_over_vxlan[0x1];
u8 tunnel_stateless_ip_over_ip[0x1];
u8 reserved_at_2a[0x6];
u8 max_vxlan_udp_ports[0x8];