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RDMA/mlx5: Use UMEM attribute for SRQ buffer in create_srq

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Use the per-attribute UMEM helper to pin the SRQ buffer umem on demand.
ib_umem_get_attr_or_va() resolves the new CREATE_SRQ_BUF_UMEM attribute
when present and otherwise falls back to the existing UHW ucmd->buf_addr
VA, preserving the legacy behavior.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20260701124015.64350-3-jiri@resnulli.us
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Jiri Pirko 2026-07-01 14:40:14 +02:00 committed by Leon Romanovsky
parent fe34dc1fa0
commit 023349192e
1 changed files with 5 additions and 1 deletions
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6
drivers/infiniband/hw/mlx5/srq.c
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@ -48,6 +48,8 @@ static int create_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq,
struct mlx5_ib_create_srq ucmd;
struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
udata, struct mlx5_ib_ucontext, ibucontext);
struct uverbs_attr_bundle *attrs =
rdma_udata_to_uverbs_attr_bundle(udata);
int err;
u32 uidx = MLX5_IB_DEFAULT_UIDX;
@ -66,7 +68,9 @@ static int create_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq,
srq->wq_sig = !!(ucmd.flags & MLX5_SRQ_FLAG_SIGNATURE);
srq->umem = ib_umem_get_va(pd->device, ucmd.buf_addr, buf_size, 0);
srq->umem = ib_umem_get_attr_or_va(pd->device, attrs,
UVERBS_ATTR_CREATE_SRQ_BUF_UMEM,
ucmd.buf_addr, buf_size, 0);
if (IS_ERR(srq->umem)) {
mlx5_ib_dbg(dev, "failed umem get, size %d\n", buf_size);
err = PTR_ERR(srq->umem);