ib_umem_get_attr(9)

💖 NAME 💖

ib_umem_get_attr — Pin a umem from a per-command UMEM attribute. Yep, that's the assignment, and it's lowkey iconic. This page lives in the Kernel API Manual, so we're doing kernel-API group-chat now 🫶.

✨ SYNOPSIS ✨

okay so the exact signature is right here, no cap:

struct ib_umem * ib_umem_get_attr (struct ib_device *device , const
struct uverbs_attr_bundle *attrs , u16 attr_id , size_t size , int
access );

🎀 ARGUMENTS 🎀

• device — the IB device, bestie.
• attrs — the uverbs attribute bundle (may be NULL). Yes, it can be NULL, slay.
• attr_id — the per-command UMEM attribute id.
• size — the minimum required umem length.
• access — the IB access flags.

🌸 RETURN 🌸

On success you get a caller-owned umem back, periodt. You get NULL when no source supplied a buffer. On error it's ERR_PTR(...), and that's the whole dramatic arc 😭.

🦋 SEE ALSO 🦋

The Kernel file is ./drivers/infiniband/core/umem.c, and the SEE ALSO crew is:

• ib_umem_find_best_pgsz(9)
• ib_umem_get_desc(9)
• ib_umem_get_attr_or_va(9)
• ib_umem_get_cq_buf(9)
• ib_umem_get_cq_buf_or_va(9)
• ib_umem_release(9)

Signed off from ./drivers/infiniband/core — October 2026 — with ib_umem_get_attr(9) energy 💌