devlink_port...ter_with_ops(9)

📦 version 7.3.1, in nixpkgs unstable

okay so bestie, welcome to the Kernel API Manual page for devlink_port_register_with_ops(9) — yes the title is literally truncated with dots in the header, that's just how it's printed, we don't fix it, we respect it ✨

🌸 NAME 🌸

devlink_port_register_with_ops — Register devlink port. that's it. that's the vibe. registering a port, but make it devlink 🎀

🦋 SYNOPSIS 🦋

int devlink_port_register_with_ops (struct devlink *devlink , struct
devlink_port *devlink_port , unsigned int port_index , const struct
devlink_port_ops *ops );

literally the whole signature, copied exactly, no cap. it returns an int, and yes we looked at it very respectfully 👑

💖 ARGUMENTS 💖

  • devlink — the devlink. iconic. no notes. it's the struct devlink * you're passing in 🫶
  • devlink_port — the devlink port, i.e. the struct devlink_port * getting registered, main character energy fr fr
  • port_index — the driver-specific numerical identifier of the port. driver-specific!! numerical!! it's an unsigned int and it's yours to define 🌈
  • ops — port ops. the const struct devlink_port_ops *. the operations. the whole point. obsessed 💅

✨ DESCRIPTION ✨

so what this does: it registers the devlink port with the port index you provide. and here's the cute part — you can use any indexing you want, even a hw-related one. go off, honestly 🔥

also, the devlink_port structure is convenient to be embedded inside your driver's private structure. like, structurally it just fits, it's giving designed-for-it 🧚

⚠️ but listen — the caller should take care of zeroing the devlink_port structure. that's on you, bestie. not the kernel. you. zero it. 🙈

⭐ CONTEXT ⭐

takes and releases devlink->lock <mutex>. so like, the lock is handled, but that's a mutex situation, be aware, don't be weird about it 😭

🌟 SEE ALSO 🌟

kernel file ./net/devlink/port.c and the whole friend group:

and that's the page!! sourced from ./net/devlink, dated October 2026, and it signs off as devlink_port...ter_with_ops(9) because the header and the footer are the same beastie. slay, go register your port, zero your struct 💜

📦 where this page comes from