e1000_set_d...tate_ich8lan(9)

📦 version 7.3.1, in nixpkgs unstable

💅 e1000_set_d0_lplu_state_ich8lan — from the Kernel API Manual, bestie ✨

okay so real talk, this is a page straight outta the Kernel API Manual (yes, that one), and it's all about one tiny little function that flips the Low Power Linkup D0 switch on your NIC. buckle up 🎀

🌸 NAME 🌸

e1000_set_d0_lplu_state_ich8lan — literally just Set Low Power Linkup D0 state. that's the whole gig. 💖

✨ SYNOPSIS ✨

s32 e1000_set_d0_lplu_state_ich8lan (struct e1000_hw *hw , bool active );

that's it, that's the signature — she takes hw and she takes active, and she hands you back an s32. ezpz 🫶

🦋 ARGUMENTS 🦋

  • hw — pointer to the HW structure. like, the actual hardware vibes. you're giving her the struct, she does the rest 👑
  • active — true to enable LPLU, false to disable. binary queen, no in-between 💅

🔥 DESCRIPTION 🔥

so what does she do? she sets the LPLU D0 state based on whatever you passed in that active flag. simple. iconic. no cap.

and here's the tea 🍓: when you're activating LPLU, this function also disables smart speed — and vice versa. they're like, mutually exclusive besties, you literally cannot have both, the way she switches one off when the other comes on. it's giving "you can't sit with both of us" energy fr fr.

also, important: LPLU will not be activated unless the device autonegotiation advertisement meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes. so like, if your autoneg advertisement isn't hitting those standards? she's not turning on. the vibe check happens before the activation, periodt ⭐

and one more thing — this is a function pointer entry point only called by PHY setup routines. so don't go calling her from just anywhere, she's not a casual hang, she's a scheduled appearance only 😭

lowkey a niche lil function but she's doing her job and she's doing it well. respect the grind 💜

🌈 SEE ALSO 🌈

the kernel file she lives in, for the curious:

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

and okay, brace yourself, because the friend group is extensive — every single one of these is a real reference and we are NOT skipping a single one, iykyk:

like I said. huge friend group. she knows everyone 💀

🫶 and that's the page!! source file is ./drivers/net/ethernet/intel/e1000e/ich8lan.c and this lil beauty is dated October 2026 — so like, she's from the future but she's still serving. mwah, go read the other pages bestie 💖✨🎀

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