diff options
| author |   Noa Osherovich <noaos@mellanox.com> | 2017-10-17 18:01:12 +0300 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2017-10-25 14:03:44 -0400 |
| commit | b4f34597a5ce148b88a47da621037537c384d565 (patch) | |
| tree | 3a864e99cf31cdf01db976d334446e34621b4ff7 | |
| parent | RDMA/hns: Add modify CQ support for hip08 (diff) | |
| download | linux-dev-b4f34597a5ce148b88a47da621037537c384d565.tar.xz linux-dev-b4f34597a5ce148b88a47da621037537c384d565.zip | |
IB/mlx5: Expose multi-packet RQ capabilities
This patch reports the device's striding RQ capabilities to
the user-space:
- min/max_single_stride_log_num_of_bytes: Log of min/max number of
bytes in a single stride.
- min/max_single_wqe_log_num_of_strides: Log of min/max number of
strides in a single WQE.
- supported_qpts: A bit mask to know which QP types support multi-
packet RQ, for now only Raw Packet QPs.
Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 16 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mlx5_ib.h | 5 | ||||
| -rw-r--r-- | include/uapi/rdma/mlx5-abi.h | 14 |
3 files changed, 35 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 552f7bd4ecc3..02da3f58f296 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -848,6 +848,22 @@ static int mlx5_ib_query_device(struct ib_device *ibdev, } } + if (field_avail(typeof(resp), striding_rq_caps, uhw->outlen)) { + resp.response_length += sizeof(resp.striding_rq_caps); + if (MLX5_CAP_GEN(mdev, striding_rq)) { + resp.striding_rq_caps.min_single_stride_log_num_of_bytes = + MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES; + resp.striding_rq_caps.max_single_stride_log_num_of_bytes = + MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES; + resp.striding_rq_caps.min_single_wqe_log_num_of_strides = + MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES; + resp.striding_rq_caps.max_single_wqe_log_num_of_strides = + MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES; + resp.striding_rq_caps.supported_qpts = + BIT(IB_QPT_RAW_PACKET); + } + } + if (uhw->outlen) { err = ib_copy_to_udata(uhw, &resp, resp.response_length); diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index 189e80cd6b2f..8de40852818b 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -256,6 +256,11 @@ enum mlx5_ib_wq_flags { MLX5_IB_WQ_FLAGS_DELAY_DROP = 0x1, }; +#define MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES 9 +#define MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES 16 +#define MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES 6 +#define MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES 13 + struct mlx5_ib_rwq { struct ib_wq ibwq; struct mlx5_core_qp core_qp; diff --git a/include/uapi/rdma/mlx5-abi.h b/include/uapi/rdma/mlx5-abi.h index 1791bf123ba9..0832d9502200 100644 --- a/include/uapi/rdma/mlx5-abi.h +++ b/include/uapi/rdma/mlx5-abi.h @@ -190,6 +190,19 @@ struct mlx5_ib_sw_parsing_caps { __u32 supported_qpts; }; +struct mlx5_ib_striding_rq_caps { + __u32 min_single_stride_log_num_of_bytes; + __u32 max_single_stride_log_num_of_bytes; + __u32 min_single_wqe_log_num_of_strides; + __u32 max_single_wqe_log_num_of_strides; + + /* Corresponding bit will be set if qp type from + * 'enum ib_qp_type' is supported, e.g. + * supported_qpts |= 1 << IB_QPT_RAW_PACKET + */ + __u32 supported_qpts; +}; + struct mlx5_ib_query_device_resp { __u32 comp_mask; __u32 response_length; @@ -200,6 +213,7 @@ struct mlx5_ib_query_device_resp { __u32 mlx5_ib_support_multi_pkt_send_wqes; __u32 reserved; struct mlx5_ib_sw_parsing_caps sw_parsing_caps; + struct mlx5_ib_striding_rq_caps striding_rq_caps; }; struct mlx5_ib_create_cq { |