e1000_enable_ulp_lpt_lp(9)

📦 version 7.3.1, in nixpkgs unstable

💅 e1000_enable_ulp_lpt_lp 💅

okay bestie so this is a page from the Kernel API Manual, and honestly? it's giving "niche but iconic." we're talking about e1000_enable_ulp_lpt_lp — the little function that puts your PHY into Ultra Low Power mode on LynxPoint-LP. ✨ no cap, it's a whole vibe.

🌸 NAME 🌸

e1000_enable_ulp_lpt_lp — the one that configures Ultra Low Power mode for LynxPoint-LP. that's it. that's the whole name. slay. 💜

🎀 SYNOPSIS 🎀

s32 e1000_enable_ulp_lpt_lp (struct e1000_hw *hw, bool to_sx);

yup, it hands you back an s32 like the good little return-value king it is. 👑

🫶 ARGUMENTS 🫶

  • hw — a pointer to the HW structure 💻✨ like, this is your hardware's whole personality in struct form.
  • to_sx — a bool that tells you whether this is a system power state transition to Sx. true = we're sliding into Sx, false = we're not. simple as that, bestie. 🌙

🦋 DESCRIPTION 🦋

okay so picture this: the link is down. 😴 and when the link is down, this function configures ULP mode so the PHY's power gets significantly reduced. lowkey the most eco-friendly glow-down ever. 🌱💅

now here's where it branches, and the branching is everything:

  • if you're on a Manageability Engine (ME) enabled system, the move is to tell the ME firmware to start the ULP configuration. let the firmware cook. 🍳🔥
  • if you're not on an ME enabled system, then you configure ULP mode by software yourself. main character energy, honestly. 💁‍♀️

periodt. that's the whole function. 🎀

🔥 SEE ALSO 🔥

the kernel file lives at ./drivers/net/ethernet/intel/e1000e/ich8lan.c btw — bookmark it, iykyk. 📌

and now the friend group. it's a big friend group. a large friend group. but every single one of them is here, no cuts, no skips, fr fr:

like i said. large friend group. but we love them all. 💖

ngl the source path gets truncated in the footer as ./drivers/net/ethernet/intel/e... — that's just the page being dramatic and mysterious. 🙈

and that's the page, bestie!! 🎀 source version timestamp says October 2026, and the whole thing is filed under e1000_enable_ulp_lpt_lp(9) — go forth and reduce that PHY power. 💜✨🦋

📦 where this page comes from