irdma_check_seq(9)

📦 version 7.3.1, in nixpkgs unstable

💅 irdma_check_seq(9) — like, the sequence-number vibe check bestie

okay so this one lives in the Kernel API Manual, and it's called irdma_check_seq. Yes, it's a kernel manpage, no, it's not boring — it's literally the function that looks at your TCP sequence numbers and goes "hmm, is this okay or not?" 🎀

✨ NAME ✨

irdma_check_seq — checks the seq numbers to see if they're OK. That's the whole job, and honestly? iconic. 🦋

🌸 SYNOPSIS 🌸

int irdma_check_seq (struct irdma_cm_node *cm_node , struct tcphdr *tcph );

It returns an int, takes two args, that's the tea. 💅

🫶 ARGUMENTS 🫶

  • cm_node — the connection's node. like, the actual connection we're checking on. it's giving main character energy for this whole syscall. 👑
  • tcph — a pointer to the tcp header. yeah, the header. the one with the seq numbers in it. that's our source of truth, no cap. 🔥

🌈 SEE ALSO 🌈

First up, the kernel file this whole thing hangs out in:

Kernel file ./drivers/infiniband/hw/irdma/cm.c

and then the entire friend group — the whole irdma cm squad, all of them, in the order the page gives them, no skipping, periodt:

that's the whole page, bestie, nothing skipped, nothing invented. now go check those seq numbers 💖

and yeah — this came out of ./drivers/infiniband/hw/irdma, dated October 2026, so like… future vibes, but the manual page itself is timeless. slay. 🧚‍♀️🌸

📦 where this page comes from