e1000_disable_ulp_lpt_lp(9)

📦 version 7.3.1, in nixpkgs unstable

💅 e1000_disable_ulp_lpt_lp(9) — like, the Kernel API Manual one 🎀

okay bestie, so this is a page from the Kernel API Manual, and it's about one very specific little function that turns off Ultra Low Power mode for LynxPoint-LP. yes it's niche. yes it's iconic. let's go ✨

🌸 NAME 🌸

e1000_disable_ulp_lpt_lp — literally the function that un-configures Ultra Low Power mode for LynxPoint-LP. that's the whole vibe. 🦋

💜 SYNOPSIS 💜

s32 e1000_disable_ulp_lpt_lp (struct e1000_hw *hw , bool force );

like, it takes two things and hands you back an s32. simple. elegant. periodt. 💅

✨ ARGUMENTS ✨

  • hw — pointer to the HW structure, aka the whole hardware situation, handed to you by reference 🫶
  • force — boolean indicating whether or not to force disabling ULP. yes it's a yes/no. yes it changes everything. 😭

🔥 DESCRIPTION 🔥

so the way this works is — e1000_disable_ulp_lpt_lp un-configures ULP mode in three scenarios, and no cap, all three matter:

  • when the link is up
  • when the system is transitioned from Sx
  • when the driver is unloaded

and then here's where it splits, and this part is so important:

if you're on a Manageability Engine (ME) enabled system, it polls for an indication from ME that ULP has been un-configured. like, it waits for ME to text back "done 💅". if you are not on an ME enabled system, it just un-configures the ULP mode by software. same goal, different lane. ✨

during nominal operation, this function is called when link is acquired to disable ULP mode, and that's the force=false case 🎀

otherwise — for example when unloading the driver or during Sx->S0 transitions — it's called with force=true to forcibly disable ULP. yes, forcibly. it's giving main character energy tbh 👑

ngl, keep the force value straight in your head bestie — false for the normal "link just came up" moment, true for the unload / Sx->S0 situations. the function does different things, so this is not a detail you skim. 🙈

🌈 SEE ALSO 🌈

okay so this is the part where the page just... lists everyone in the friend group 🫶. the source lives in the kernel file:

./drivers/net/ethernet/intel/e1000e/ich8lan.c

and here's the full squad, fr fr — every single one of them:

like, that's the whole extended universe bestie, we don't gatekeep here 💀🌸

and that's the page!! 🧚 source on this one is ./drivers/net/ethernet/intel/e... (yes it's abbreviated in the footer, that's just how it is, no cap) and the date on it is October 2026 ⭐ so whenever you're reading this, hi from the future, mwah 💜 slay, go disable that ULP 🍓

📦 where this page comes from