pvrdma_modify_port(9)

📦 version 7.3.1, in nixpkgs unstable

💫 pvrdma_modify_port(9) — the Kernel API Manual, bestie edition 💫

okay so you found pvrdma_modify_port in the 9 section of the Kernel API Manual and you're like "what does this even do" — don't worry, I got you 🫶. Short version: it modifies device port attributes. That's the whole vibe. Let's get into it ✨

🌸 NAME 🌸

pvrdma_modify_port — literally just modify device port attributes, that's it, that's the function 💅

🎀 SYNOPSIS 🎀

int pvrdma_modify_port (struct ib_device *ibdev , u32 port , int mask ,
       struct ib_port_modify *props );

Look at that signature. Gorgeous. Returns an int, takes four args, no notes 🔥

🦋 ARGUMENTS 🦋

Four things go in, and here's what each one is giving:

  • ibdev — the device to modify. This is your main character, the thing you're actually touching 👑
  • port — the port number. Which port are we doing this to? That one. u32 of pure specificity 💜
  • mask — attributes to modify. The int that says which attributes we're flipping ✨
  • props — the device properties. A struct ib_port_modify *, carrying the actual goods 🎀

⭐ RETURN ⭐

Returns 0 on success — slay, we love a clean zero 😌 — otherwise a negative errno. So if you see a negative number coming back, that's not a vibe, that's an error, and you should probably look at it 🙈

🌈 SEE ALSO 🌈

Here's where the actual code lives, iykyk:

Kernel file ./drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.c

And the whole friend group of related calls, all in (9) land — go read these too, fr fr:

ngl the whole alloc/dealloc/create/destroy pairing situation is so satisfying — like, balance. symmetry. icon behavior 💅

and that's the page, bestie 💖 this one came from ./drivers/infiniband/hw/vmw_pv... (the full path being ./drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.c), dated October 2026 — so yes, it's giving future-core aesthetic 🧚✨ periodt.

📦 where this page comes from