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| author | Jiri Pirko <jiri@nvidia.com> | 2026-07-01 14:40:15 +0200 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2026-07-23 08:33:32 -0400 |
| commit | aac287f4f1ebebc85f36c0680bcf955ef9145c66 (patch) | |
| tree | 86ea33d6dc9272e80084bf150646c519f01505aa /include/uapi | |
| parent | 023349192e79cfb00ef9ad320549e4f6b6cf8309 (diff) | |
| download | linux-aac287f4f1ebebc85f36c0680bcf955ef9145c66.tar.gz linux-aac287f4f1ebebc85f36c0680bcf955ef9145c66.zip | |
RDMA/mlx5: Use UMEM attribute for SRQ doorbell record
Add an optional mlx5 driver-namespace UMEM attribute on SRQ create so
userspace can supply the doorbell record umem explicitly, symmetric to
the CQ and QP sides. Resolve it inside mlx5_ib_db_map_user() and use it
as a private DBR page when present; otherwise take the existing UHW
share-or-pin path that preserves per-page DBR sharing across CQ/QP/SRQ
in the same process.
Add mlx5's first UVERBS_OBJECT_SRQ UAPI definition chain to attach the
new attr.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20260701124015.64350-4-jiri@resnulli.us
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/rdma/mlx5_user_ioctl_cmds.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/rdma/mlx5_user_ioctl_cmds.h b/include/uapi/rdma/mlx5_user_ioctl_cmds.h index ddb898afd813..3528743e3858 100644 --- a/include/uapi/rdma/mlx5_user_ioctl_cmds.h +++ b/include/uapi/rdma/mlx5_user_ioctl_cmds.h @@ -281,6 +281,10 @@ enum mlx5_ib_create_qp_attrs { MLX5_IB_ATTR_CREATE_QP_DBR_BUF_UMEM = UVERBS_ID_DRIVER_NS_WITH_UHW, }; +enum mlx5_ib_create_srq_attrs { + MLX5_IB_ATTR_CREATE_SRQ_DBR_BUF_UMEM = UVERBS_ID_DRIVER_NS_WITH_UHW, +}; + enum mlx5_ib_reg_dmabuf_mr_attrs { MLX5_IB_ATTR_REG_DMABUF_MR_ACCESS_FLAGS = (1U << UVERBS_ID_NS_SHIFT), }; |