diff options
| author | Michael Margolin <mrgolin@amazon.com> | 2025-07-08 20:23:06 +0000 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2025-07-13 04:00:34 -0400 |
| commit | 1a40c362ae265ca4004f7373b34c22af6810f6cb (patch) | |
| tree | 4e605b45246d7e999c4cca9d0487c259aa827133 /include/rdma | |
| parent | RDMA/mlx5: Optimize DMABUF mkey page size (diff) | |
| download | linux-1a40c362ae265ca4004f7373b34c22af6810f6cb.tar.gz linux-1a40c362ae265ca4004f7373b34c22af6810f6cb.zip | |
RDMA/uverbs: Add a common way to create CQ with umem
Add ioctl command attributes and a common handling for the option to
create CQs with memory buffers passed from userspace. When required
attributes are supplied, create umem and provide it for driver's use.
The extension enables creation of CQs on top of preallocated CPU
virtual or device memory buffers, by supplying VA or dmabuf fd, in a
common way.
Drivers can support this flow by initializing a new create_cq_umem fp
field in their ops struct, with a function that can handle the new
parameter.
Signed-off-by: Michael Margolin <mrgolin@amazon.com>
Link: https://patch.msgid.link/20250708202308.24783-2-mrgolin@amazon.com
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 1d123812a1f9..3fb1c963eeb0 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -2486,6 +2486,10 @@ struct ib_device_ops { int (*destroy_qp)(struct ib_qp *qp, struct ib_udata *udata); int (*create_cq)(struct ib_cq *cq, const struct ib_cq_init_attr *attr, struct uverbs_attr_bundle *attrs); + int (*create_cq_umem)(struct ib_cq *cq, + const struct ib_cq_init_attr *attr, + struct ib_umem *umem, + struct uverbs_attr_bundle *attrs); int (*modify_cq)(struct ib_cq *cq, u16 cq_count, u16 cq_period); int (*destroy_cq)(struct ib_cq *cq, struct ib_udata *udata); int (*resize_cq)(struct ib_cq *cq, int cqe, struct ib_udata *udata); |