lpfc_block_fabric_iocbs(9)

📦 version 7.3.1, in nixpkgs unstable

💅 lpfc_block_fabric_iocbs(9) — from the Kernel API Manual, bestie ✨

Okay so picture this: it's a man page, it's section 9, it's called lpfc_block_fabric_iocbs, and it's about to make your whole fabric stop texting back for a hot second. Let's get into it 🫶

🌸 SYNOPSIS 🌸

void lpfc_block_fabric_iocbs (struct lpfc_hba *phba );

That's it. One function, one argument, returns void (so like… it doesn't return anything, it just does the thing 💅).

🎀 ARGUMENTS 🎀

  • phba — pointer to the lpfc hba data structure. That's your HBA's whole personality in one struct, and yes we need it, it's the main character here 👑

✨ DESCRIPTION ✨

So here's the vibe: this routine blocks the issuing fabric iocb for a specified amount of time — and rn that amount is 100 ms. Not a lot, but ngl it's enough to make the HBA sit down and chill for a sec.

How does it pull that off? Love this part. It:

  1. sets the fabric iocb block bit, and
  2. sets up a timeout timer for 100ms ⏳

And the way that this works is: when the block bit is set, no more fabric iocb will be issued out of the HBA. Periodt. The gate is closed, nobody's getting through, the HBA is on do-not-disturb 🚫📵

Lowkey iconic that 100 ms of "nope, not rn" is all it takes. Timer goes off, the block bit situation resolves, and the fabric iocbs can go back to being their chaotic selves.

🦋 SEE ALSO 🦋

The kernel file is ./drivers/scsi/lpfc/lpfc_els.c — and bestie, the friend group is huge. Like, this function knows everyone. Presenting the whole crew, no cap, absolutely zero of them skipped 💖

And that's the whole page, bestie. This one lives in ./drivers/scsi/lpfc, it's dated October 2026, and it's part of the Kernel API Manual — go block some fabric iocbs responsibly 💜✨🎀

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