devl_port_register_with_ops(9)

📦 version 7.3.1, in nixpkgs unstable

💅 devl_port_register_with_ops(9) 💅

okay so this is a page from the Kernel API Manual and it's all about devl_port_register_with_ops — the function that, yeah, registers a devlink port. that's it, that's the vibe. let's get into it bestie 🫶

✨ NAME ✨

devl_port_register_with_ops — register a devlink port. literally the whole job, no cap 💅

🌸 SYNOPSIS 🌸

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

look at that signature. it's giving "four arguments, one int return, zero notes". we love a clean little lineup ✨

🎀 ARGUMENTS 🎀

  • devlink — the devlink. that's it. that's the description. it's a struct devlink * and it's your devlink, bestie 🦋
  • devlink_port — the devlink port. a struct devlink_port *. the port in question, the main character of this whole operation 👑
  • port_index — a driver-specific numerical identifier of the port. an unsigned int, and it's yours to choose, which is lowkey the fun part 💖
  • ops — port ops. a const struct devlink_port_ops *, and it's exactly what it sounds like 🎀

🔥 DESCRIPTION 🔥

so you're registering a devlink port with the port index you provide. and here's the slay: you can use any indexing you want — even a hw-related one. no one's gonna stop you. hw-related indexing is valid and honestly iconic of you 💅

the devlink_port structure is convenient to be embedded inside your user driver private structure. like, she's built to move in with your driver's private struct, fr fr 🏡✨

⚠️ okay but listen — the caller should take care of zeroing the devlink_port structure. that's on you, not on the function. do not skip this step. i'm serious. zero it out before you call. no cap 😭

🦋 SEE ALSO 🦋

kernel file ./net/devlink/port.c — plus a whole friend group of functions, all of them (9):

go read them. they're all in ./net/devlink. iykyk 💜

and that's the whole page bestie, you ate that 🍓 this lil gem lives in ./net/devlink and the version dates to October 2026 — go forth and register your ports responsibly, mwah 💋🌈⭐

📦 where this page comes from