ib_alloc_mr_integrity(9)

✨ NAME ✨

okay bestie, welcome to ib_alloc_mr_integrity(9) from the Kernel API Manual 💖 — this is the page for the function that Allocates an integrity memory region. That’s the name and the whole main-character job, periodt.

🌸 SYNOPSIS 🌸

Here’s the signature, copy it exactly, no edits bestie:

struct ib_mr * ib_alloc_mr_integrity (struct ib_pd *pd , u32
       max_num_data_sg , u32 max_num_meta_sg );

💖 ARGUMENTS 💖

Three little besties walk into the function:

• pd — protection domain associated with the region.
• max_num_data_sg — maximum data sg entries available for registration.
• max_num_meta_sg — maximum metadata sg entries available for registration.

🎀 NOTES 🎀

🚨 limits check, bestie: Memory registration page/sg lists must not exceed max_num_sg, also the integrity page/sg lists must not exceed max_num_meta_sg. That’s the rule, no cap. 💅

🦋 SEE ALSO 🦋

Kernel file ./drivers/infiniband/core/verbs.c is in the group chat, and so are all these:

• __ib_alloc_pd(9)
• ib_dealloc_pd_user(9)
• rdma_copy_ah_attr(9)
• rdma_replace_ah_attr(9)
• rdma_move_ah_attr(9)
• rdma_create_ah(9)
• rdma_create_user_ah(9)
• rdma_move_grh_sgid_attr(9)
• rdma_destroy_ah_attr(9)
• ib_create_srq_user(9)
• ib_create_qp_user(9)
• ib_resolve_eth_dmac(9)
• ib_modify_qp_with_udata(9)
• ib_alloc_mr(9)
• ib_alloc_xrcd_user(9)
• ib_dealloc_xrcd_user(9)
• ib_create_wq(9)
• ib_destroy_wq_user(9)
• ib_map_mr_sg_pi(9)
• ib_map_mr_sg(9)
• ib_sg_to_pages(9)
• ib_drain_sq(9)
• ib_drain_rq(9)
• ib_drain_qp(9)
• rdma_alloc_hw_stats_struct(9)
• rdma_free_hw_stats_struct(9)

💅 that’s the whole page, and yes it ate. Source/version: ./drivers/infiniband/core; date: October 2026; and this iconic manual page is ib_alloc_mr_integrity(9). Mwah 🫶