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IB/mlx5: Expose MPLS related tunneling offloads

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This patch reports the device's capbilities to offload
encapsulated MPLS tunnel protocols to user-space:
- Capability to offload MPLS over GRE.
- Capability to offload MPLS over UDP.

Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-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:
Ariel Levkovich 2018-05-13 14:33:35 +03:00 committed by Jason Gunthorpe
parent 71c6e8638c
commit e818e255a5
4 changed files with 19 additions and 2 deletions
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8
drivers/infiniband/hw/mlx5/main.c
View file

@ -1084,6 +1084,14 @@ 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)
resp.tunnel_offloads_caps |=
MLX5_IB_TUNNELED_OFFLOADS_MPLS_GRE;
if (MLX5_CAP_GEN(mdev, flex_parser_protocols) &
MLX5_FLEX_PROTO_CW_MPLS_UDP)
resp.tunnel_offloads_caps |=
MLX5_IB_TUNNELED_OFFLOADS_MPLS_UDP;
}
if (uhw->outlen) {

5
include/linux/mlx5/device.h
View file

@ -1001,6 +1001,11 @@ enum mlx5_mpls_supported_fields {
MLX5_FIELD_SUPPORT_MPLS_TTL = 1 << 3
};
enum mlx5_flex_parser_protos {
MLX5_FLEX_PROTO_CW_MPLS_GRE = 1 << 4,
MLX5_FLEX_PROTO_CW_MPLS_UDP = 1 << 5,
};
/* MLX5 DEV CAPs */
/* TODO: EAT.ME */

4
include/linux/mlx5/mlx5_ifc.h
View file

@ -1138,7 +1138,9 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 reserved_at_500[0x20];
u8 num_of_uars_per_page[0x20];
u8 reserved_at_540[0x40];
u8 flex_parser_protocols[0x20];
u8 reserved_at_560[0x20];
u8 reserved_at_580[0x3d];
u8 cqe_128_always[0x1];

4
include/uapi/rdma/mlx5-abi.h
View file

@ -233,7 +233,9 @@ enum mlx5_ib_query_dev_resp_flags {
enum mlx5_ib_tunnel_offloads {
MLX5_IB_TUNNELED_OFFLOADS_VXLAN = 1 << 0,
MLX5_IB_TUNNELED_OFFLOADS_GRE = 1 << 1,
MLX5_IB_TUNNELED_OFFLOADS_GENEVE = 1 << 2
MLX5_IB_TUNNELED_OFFLOADS_GENEVE = 1 << 2,
MLX5_IB_TUNNELED_OFFLOADS_MPLS_GRE = 1 << 3,
MLX5_IB_TUNNELED_OFFLOADS_MPLS_UDP = 1 << 4,
};
struct mlx5_ib_query_device_resp {