port_cfg(9)

📦 version 7.3.1, in nixpkgs unstable

💅 port_cfg(9) — like, the port register bit-setter

okay so real talk, this one's from the Kernel API Manual, section 9, and the page is literally called port_cfg. Yes bestie, that port_cfg. Let's get into it 🎀

✨ SYNOPSIS ✨

void port_cfg (struct ksz_hw *hw , int port , int offset , u16 bits ,
int set );

that's the whole signature, no cap. five things go in, nothing comes out (it's void, she's giving "I do the work, I don't need credit" 💅).

🌸 ARGUMENTS 🌸

  • hw — the hardware instance. like, the actual switch she's working with 🦋
  • port — the port index. which port are we talking about, bestie? 👀
  • offset — the offset of the port register. where in the registers we're poking around.
  • bits — the data bits to set. these are the actual bits, u16 of them 🎀
  • set — the flag saying whether those bits are getting set or not. so it's like, a "do the thing / undo the thing" switch. iconic honestly.

🔥 DESCRIPTION 🔥

this routine sets or resets the specified bits of the port register. that's it, that's the whole vibe. you hand it a port register offset, you hand it some bits, and you tell it via set whether you're turning those bits on or off. one function, two moods 💖

👑 SEE ALSO 👑

buckle up bestie, this list is long and I am not skipping a single one of them, periodt. first up, the actual kernel file she lives in: ./drivers/net/ethernet/micrel/ksz884x.c. then all her friends:

see? every single one. ate and left no crumbs 🍓

and that's the whole page bestie!! this lil beauty ships out of ./drivers/net/ethernet/micrel and it's dated October 2026 — go off, future girlies 💜✨🫶

📦 where this page comes from