epf_ntb_bind(9)

📦 version 7.3.1, in nixpkgs unstable

💅 epf_ntb_bind(9) — the Kernel API Manual page, but make it make sense

okay so bestie, welcome to the epf_ntb_bind(9) glow-up 🌟 from the Kernel API Manual. yes, that's a section 9 manpage, which means we're deep in kernel-land and it's giving very much main character energy 🎀

✨ NAME ✨

epf_ntb_bind — literally the function that initializes the endpoint controller so it can provide NTB functionality 🦋

🌸 SYNOPSIS 🌸

int epf_ntb_bind (struct pci_epf *epf );

that's it, that's the whole vibe check: it returns an int and takes one struct pointer. iconic.

🎀 ARGUMENTS 🎀

  • epf — the NTB endpoint function device. this is your girl right here, the thing we're binding 💖

🧚 DESCRIPTION 🧚

so what it actually does: it initializes both of the endpoint controllers that are associated with the NTB function device. both of them. no cap 🙈

it gets invoked when a primary interface or a secondary interface is bound to the EPC device.

and here's the tea ☕ — this function will succeed only when EPC is bound to both the interfaces. like, both. if only one binds, it's not slaying, it's failing. sorry bestie, that's just the rules 😭

🔥 RETURN 🔥

Zero for success, or an error code if it didn't work out. zero = we ate, error code = 💀

ngl, always check the return value. zero is the only good number here.

👑 SEE ALSO 👑

the kernel file it lives in, for when you wanna read the source yourself (respect, honestly):

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

and the whole friend group 💅 — all these sibling functions, fr fr:

and that's the whole page, bestie 🫶 this lil masterpiece lives over in ./drivers/pci/endpoint/functions and it's dated October 2026 🌈 — go forth, bind your endpoints, and remember: both interfaces or it doesn't count 💜✨

📦 where this page comes from