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authorBodong Wang <bodong@mellanox.com>2016-10-31 13:16:45 +0300
committerDoug Ledford <dledford@redhat.com>2016-12-13 21:34:20 +0300
commit1cbe6fc86ccfe05a910be4883da7c7bd28c190fe (patch)
tree560242bbc3aa336798d88c610f88a5494b332620 /include/uapi
parent7e43a2a5bae39fedaa7cce21d637e0c8d96d8e54 (diff)
downloadlinux-1cbe6fc86ccfe05a910be4883da7c7bd28c190fe.tar.xz
IB/mlx5: Add support for CQE compressing
CQE compressing reduces PCI overhead by coalescing and compressing multiple CQEs into a single merged CQE. Successful compressing improves message rate especially for small packet traffic. CQE compressing is supported for all 64B CQE formats (with certain limitations) generated by RQ/Responder or by SQ/Requestor. 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>
Diffstat (limited to 'include/uapi')
-rw-r--r--include/uapi/rdma/mlx5-abi.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/uapi/rdma/mlx5-abi.h b/include/uapi/rdma/mlx5-abi.h
index 6649d13a2dbb..b0a41c8dc1fb 100644
--- a/include/uapi/rdma/mlx5-abi.h
+++ b/include/uapi/rdma/mlx5-abi.h
@@ -149,7 +149,9 @@ struct mlx5_ib_create_cq {
__u64 buf_addr;
__u64 db_addr;
__u32 cqe_size;
- __u32 reserved; /* explicit padding (optional on i386) */
+ __u8 cqe_comp_en;
+ __u8 cqe_comp_res_format;
+ __u16 reserved; /* explicit padding (optional on i386) */
};
struct mlx5_ib_create_cq_resp {