mii_duplex(9)

📦 version 7.3.1, in nixpkgs unstable

💅 mii_duplex(9) 💅

okay so bestie, welcome to the mii_duplex(9) page from the Kernel API Manual — yes we're in the kernel API manual, yes it's giving big-brain energy, and yes you're gonna get it. 🧚✨

✨ NAME ✨

mii_duplex — literally it's just the function name up here with... nothing after the dash. yeah. the description slot is empty, no cap. iconic minimalism honestly, we love a mystery 🎀

🌸 SYNOPSIS 🌸

unsigned int mii_duplex (unsigned int duplex_lock , unsigned int
       negotiated );

look at her. two unsigned int args in, one unsigned int out. she's simple, she's clean, she's serving function signature realness 💅

🦋 ARGUMENTS 🦋

  • duplex_lock — non-zero if duplex is locked at full 🔒 like, if this one is nonzero it means the duplex got locked at full, mmkay? full duplex main character behavior.
  • negotiated — value of MII ANAR and'd with ANLPAR 🫶 that's the bitwise-AND of MII ANAR and ANLPAR, exactly as stated. yes those are the names. no we are not renaming them. periodt.

💖 DESCRIPTION 💖

so this one is "a small helper function for a common case." that's the whole pitch, fr fr. she's little, she's useful, she handles a thing that happens all the time.

what she returns:

  • returns one if the media is operating at full duplex or locked at full duplex ✅
  • returns zero otherwise ❌

that's it. that's the function. one or zero, full duplex or not. honestly? obsessed with the clarity 🌈

👑 SEE ALSO 👑

and now, bestie, the friend group. the whole squad. the mii/ethtool/linkmode extended cinematic universe 🌌 every single one of these is a real reference from the page, linked with (9) like a little badge of honor:

like?? the conversion-function lore is deep. iykyk 💀

💜 quick vibe check: the media is operating or locked at full duplex → 1. anything else → 0. don't overthink her, she's a helper. 🍓

okay that's the page!! mwah 💋 this one lives in ./include/linux, dated October 2026, and it's filed under mii_duplex(9) in the Kernel API Manual — go forth and check your duplex, bestie, you've got this 🔥👑🫶

📦 where this page comes from