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| author | Yishai Hadas <yishaih@mellanox.com> | 2016-08-28 11:28:45 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-10-07 16:54:13 -0400 |
| commit | 31f69a82b456e3ae9b5572961b4cc4ec971e9dc7 (patch) | |
| tree | 733f377cf7a1edb12e6b25d4b0097e32a41027ea /drivers/infiniband | |
| parent | 47adf2f4f5805d075359fe6cbe3437612f7d4a34 (diff) | |
| download | linux-31f69a82b456e3ae9b5572961b4cc4ec971e9dc7.tar.gz linux-31f69a82b456e3ae9b5572961b4cc4ec971e9dc7.tar.bz2 linux-31f69a82b456e3ae9b5572961b4cc4ec971e9dc7.zip | |
IB/mlx5: Expose RSS related capabilities
Expose RSS related capabilities on both IB and vendor channels.
In addition to the IB capabilities the driver reports some extra
capabilities on its vendor channel:
- Bit mask of the supported types of hash functions.
- Bit mask of the supported RX fields that can participate
in the RX hashing.
Those capabilities are applicable only when the link layer
is Ethernet.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 31 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/user.h | 7 |
2 files changed, 38 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index cf1eee492a4e..840fbd0c9dca 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -531,6 +531,26 @@ static int mlx5_ib_query_device(struct ib_device *ibdev, resp.response_length += sizeof(resp.tso_caps); } } + + if (field_avail(typeof(resp), rss_caps, uhw->outlen)) { + resp.rss_caps.rx_hash_function = + MLX5_RX_HASH_FUNC_TOEPLITZ; + resp.rss_caps.rx_hash_fields_mask = + MLX5_RX_HASH_SRC_IPV4 | + MLX5_RX_HASH_DST_IPV4 | + MLX5_RX_HASH_SRC_IPV6 | + MLX5_RX_HASH_DST_IPV6 | + MLX5_RX_HASH_SRC_PORT_TCP | + MLX5_RX_HASH_DST_PORT_TCP | + MLX5_RX_HASH_SRC_PORT_UDP | + MLX5_RX_HASH_DST_PORT_UDP; + resp.response_length += sizeof(resp.rss_caps); + } + } else { + if (field_avail(typeof(resp), tso_caps, uhw->outlen)) + resp.response_length += sizeof(resp.tso_caps); + if (field_avail(typeof(resp), rss_caps, uhw->outlen)) + resp.response_length += sizeof(resp.rss_caps); } if (MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) { @@ -594,6 +614,17 @@ static int mlx5_ib_query_device(struct ib_device *ibdev, if (!mlx5_core_is_pf(mdev)) props->device_cap_flags |= IB_DEVICE_VIRTUAL_FUNCTION; + if (mlx5_ib_port_link_layer(ibdev, 1) == + IB_LINK_LAYER_ETHERNET) { + props->rss_caps.max_rwq_indirection_tables = + 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt); + props->rss_caps.max_rwq_indirection_table_size = + 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt_size); + props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET; + props->max_wq_type_rq = + 1 << MLX5_CAP_GEN(dev->mdev, log_max_rq); + } + if (uhw->outlen) { err = ib_copy_to_udata(uhw, &resp, resp.response_length); diff --git a/drivers/infiniband/hw/mlx5/user.h b/drivers/infiniband/hw/mlx5/user.h index 188dac4301b5..0e49d5b30a4c 100644 --- a/drivers/infiniband/hw/mlx5/user.h +++ b/drivers/infiniband/hw/mlx5/user.h @@ -121,10 +121,17 @@ struct mlx5_ib_tso_caps { __u32 supported_qpts; }; +struct mlx5_ib_rss_caps { + __u64 rx_hash_fields_mask; /* enum mlx5_rx_hash_fields */ + __u8 rx_hash_function; /* enum mlx5_rx_hash_function_flags */ + __u8 reserved[7]; +}; + struct mlx5_ib_query_device_resp { __u32 comp_mask; __u32 response_length; struct mlx5_ib_tso_caps tso_caps; + struct mlx5_ib_rss_caps rss_caps; }; struct mlx5_ib_create_cq { |