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authorBodong Wang <bodong@mellanox.com>2016-10-31 11:16:44 +0100
committerDoug Ledford <dledford@redhat.com>2016-12-13 19:34:03 +0100
commit7e43a2a5bae39fedaa7cce21d637e0c8d96d8e54 (patch)
tree519f0766738abbd319167e32bf4c8a8321c41de5
parentIB/mlx5: Report mlx5 multi packet WQE caps during query (diff)
downloadlinux-7e43a2a5bae39fedaa7cce21d637e0c8d96d8e54.tar.xz
linux-7e43a2a5bae39fedaa7cce21d637e0c8d96d8e54.zip
IB/mlx5: Report mlx5 CQE compression caps during query
The capabilities include: - Max number of compressed and aggregated CQEs in a single session, while zero means unsupported. - For Responder, there are two formats of mini CQE: mini CQE with Rx hash and mini CQE with checksum. They're mutual exclusive. Signed-off-by: Bodong Wang <bodong@mellanox.com> Reviewed-by: Matan Barak <matanb@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.c10
-rw-r--r--include/uapi/rdma/mlx5-abi.h12
2 files changed, 22 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index a16207c33333..2687a93c4af2 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -683,6 +683,16 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
if (field_avail(typeof(resp), reserved, uhw->outlen))
resp.response_length += sizeof(resp.reserved);
+ if (field_avail(typeof(resp), cqe_comp_caps, uhw->outlen)) {
+ resp.cqe_comp_caps.max_num =
+ MLX5_CAP_GEN(dev->mdev, cqe_compression) ?
+ MLX5_CAP_GEN(dev->mdev, cqe_compression_max_num) : 0;
+ resp.cqe_comp_caps.supported_format =
+ MLX5_IB_CQE_RES_FORMAT_HASH |
+ MLX5_IB_CQE_RES_FORMAT_CSUM;
+ resp.response_length += sizeof(resp.cqe_comp_caps);
+ }
+
if (uhw->outlen) {
err = ib_copy_to_udata(uhw, &resp, resp.response_length);
diff --git a/include/uapi/rdma/mlx5-abi.h b/include/uapi/rdma/mlx5-abi.h
index 93d6b9fe8e78..6649d13a2dbb 100644
--- a/include/uapi/rdma/mlx5-abi.h
+++ b/include/uapi/rdma/mlx5-abi.h
@@ -124,11 +124,23 @@ struct mlx5_ib_rss_caps {
__u8 reserved[7];
};
+enum mlx5_ib_cqe_comp_res_format {
+ MLX5_IB_CQE_RES_FORMAT_HASH = 1 << 0,
+ MLX5_IB_CQE_RES_FORMAT_CSUM = 1 << 1,
+ MLX5_IB_CQE_RES_RESERVED = 1 << 2,
+};
+
+struct mlx5_ib_cqe_comp_caps {
+ __u32 max_num;
+ __u32 supported_format; /* enum mlx5_ib_cqe_comp_res_format */
+};
+
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_cqe_comp_caps cqe_comp_caps;
__u32 mlx5_ib_support_multi_pkt_send_wqes;
__u32 reserved;
};