rvt_query_pkey(9)

📦 version 7.3.1, in nixpkgs unstable

✨ rvt_query_pkey(9) ✨

okay so bestie, welcome to the Kernel API Manual 💖 this little cutie lives in the rvt corner of the kernel and she's here to hand you a pkey straight out of the table. let's get into it 🎀

🌸 NAME 🌸

rvt_query_pkey — return a pkey from the table at a given index 💅 that's it, that's the whole job, and she does it flawlessly.

🦋 SYNOPSIS 🦋

int rvt_query_pkey (struct ib_device *ibdev , u32 port_num , u16 index ,
u16 *pkey );

like, look at that signature. iconic. 🔥

💜 ARGUMENTS 💜

  • ibdev — the Verbs IB dev, aka the main character of this whole operation 👑
  • port_num — the port number, and it's 1 based from ib core — yes bestie, ONE based, don't come at her with your zero-index nonsense 🙈
  • index — the index into the pkey table 🎯
  • pkey — the returned pkey from the port pkey table, she gets written out through this pointer, slay 💫

🌈 RETURN 🌈

0 on failure, otherwise the pkey. no cap, that's the actual contract — zero means it went wrong, everything else is your pkey 😭 so don't be out here doing if (ret) and thinking it worked, ok? 💀

🧚 SEE ALSO 🧚

the kernel file ./drivers/infiniband/sw/rdmavt/vt.c is where she lives, and here's the whole friend group 🫶:

💖 that's the whole page, bestie 💖 this one came from ./drivers/infiniband/sw/rdmavt and it's dated October 2026 — go forth and query those pkeys, rvt_query_pkey(9) forever 💅✨🍓

📦 where this page comes from