RDMA/uverbs: Add SRQ buffer UMEM attribute

Browse source

Apply the per-attribute UMEM model to the SRQ create method. Add an
optional UMEM attribute that backs the SRQ WQE buffer, so userspace can
supply it as either a VA or a dma-buf through a single descriptor,
consistent with the CQ and QP create methods.

mlx5 is the only driver that pins an SRQ WQE buffer via umem; it maps a
single ucmd->buf_addr region through this attribute. No other driver
implements a user SRQ buffer, so none of them use the attribute.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20260701124015.64350-2-jiri@resnulli.us
Signed-off-by: Leon Romanovsky <leon@kernel.org>

...

This commit is contained in:

Jiri Pirko 2026-07-01 14:40:13 +02:00 • committed by Leon Romanovsky

parent 1773ca1a89

commit fe34dc1fa0

2 changed files with 3 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

drivers/infiniband/core/uverbs_std_types_srq.c

View file

1

include/uapi/rdma/ib_user_ioctl_cmds.h

View file