ib_alloc_pd(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 ib_alloc_pd (9) — Kernel API Manual 💅

okay bestie, so this one is from the Kernel API Manual, section 9, and it's genuinely iconic: ib_alloc_pd is the girl that hands you a fresh, unused protection domain. That's the whole vibe. Let's get into it 🫶

✨ NAME ✨

ib_alloc_pd — allocates an unused protection domain</p> 💖

🦋 SYNOPSIS 🦋

ib_alloc_pd (device , flags );

like yes that's literally it, she's low maintenance 💅

🎀 ARGUMENTS 🎀

  • device — the device you're allocating this protection domain on. that's the one, that's her main character.
  • flags — the protection domain flags. yep, that's the whole description, no cap 😭

💜 DESCRIPTION 💜

so a protection domain object is like the group chat that keeps everybody connected 💖 it provides an association between QPs, shared receive queues, address handles, memory regions, and memory windows. one PD, five besties, all mutually associated, we love a connector 🔥

and every single PD has a local_dma_lkey — the way that this one can be used as the lkey value for local memory operations. it's giving handy. it's giving useful. periodt ✨

🌈 SEE ALSO 🌈

the whole friend group, fr fr — every one of these is in the mix, and the kernel file ./include/rdma/ib_verbs.h is where the lore lives 📚💫

and that's the whole page, bestie 🎀 this lil slice of the kernel docs lives at ./include/rdma, and it's dated October 2026 — so go forth, allocate that unused protection domain, and slay 💅✨👑

📦 where this page comes from