i40e_quiesce_vf_pci(9)

📦 version 7.3.1, in nixpkgs unstable

💅 i40e_quiesce_vf_pci — Kernel API Manual

okay so bestie, this one lives in the Kernel API Manual (section 9, the kernel-functions chapter), and it's about the i40e driver — Intel's 40-gigabit Ethernet family, the one that's absolutely carrying your SR-IOV setup. Sit down, this is short but it matters. 🦋

✨ NAME ✨

i40e_quiesce_vf_pci —

no frills, no tagline: the original one-liner is literally empty, bestie. The kernel-doc generator left it blank. Not me being lazy, that's just what's on the page. 🙈

✨ SYNOPSIS ✨

int i40e_quiesce_vf_pci (struct i40e_vf *vf );

✨ ARGUMENTS ✨

  • vf — pointer to the VF structure. yeah. that's the whole description. a pointer. to the VF struct. iconic minimalism 💅

✨ DESCRIPTION ✨

Okay so here's the actual tea 🍵 — this function waits for VF PCI transactions to be cleared after reset.

That's it, that's the job. When a virtual function gets reset, its PCI transactions need to drain out and go quiet before anything else can safely happen, and this function is the one sitting there watching the door until everybody's left. 🚪✨

And if they never clear? It returns -EIO. Not a timeout-flavored error, not a "try again later" — -EIO, I/O error, the transactions are stuck and that's a bad sign. The waiting is over, and the answer is no. 😭

ngl the description here is short but the vibe is high-stakes: it's a drain-and-confirm checkpoint. Don't sleep on it.

🌈 SEE ALSO 🌈

The source lives in the kernel file ./drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c — which is also why the whole neighborhood is one giant virtchnl family reunion. Presenting, in the exact order the page lists them:

like… the whole virtchnl friend group showed up 💀🫶 go read them if you want the full lore, iykyk.

🎀 the sign-off 🎀

this page ships from ./drivers/net/ethernet/intel/i40e, dated October 2026, and it's filed under i40e_quiesce_vf_pci(9) — so when you're googling at 2am, that's the tag to look for. now go clear those transactions, bestie. periodt. 💜🌸

📦 where this page comes from