epf_ntb_epc_init(9)

📦 version 7.3.1, in nixpkgs unstable

💅 epf_ntb_epc_init — like, the kernel API manual page, bestie

okay so real quick — this is epf_ntb_epc_init(9) straight out of the Kernel API Manual, and it's genuinely one of those little functions that does a LOT behind the scenes. let me walk you through it 🫶

✨ NAME ✨

epf_ntb_epc_init — Initialize NTB interface ✨

🌸 SYNOPSIS 🌸

int epf_ntb_epc_init (struct epf_ntb *ntb );

that's it. that's the whole vibe. one arg, one int back 💅

🎀 ARGUMENTS 🎀

  • ntb — the NTB device that facilitates communication between HOST and VHOST 🦋

🦋 DESCRIPTION 🦋

so this one is a wrapper, okay? it wraps two things: it initializes a particular EPC interface, and it starts the workqueue that checks for commands coming in from the HOST. the way that it's doing double duty?? iconic. 👑

and like, heads up — this function will write to the EP controller HW for configuring it. that's not a metaphor, it's literally poking at hardware. so maybe don't call it for funsies 🙈

⭐ RETURN ⭐

  • Zero → success, slay 🎉
  • an error code → in case of failure 😭

💜 SEE ALSO 💜

the kernel file where all the magic lives:

./drivers/pci/endpoint/functions/pci-epf-vntb.c

and the whole friend group of related functions, fr fr (go read all of them, iykyk):

anyway that's the whole page 🧚 ok bye bestie, stay hydrated and remember: hardware writes are forever 💀

signing off from ./drivers/pci/endpoint/functions — October 2026 🍓

📦 where this page comes from