igb_check_reset_block(9)

📦 version 7.3.1, in nixpkgs unstable

💅 igb_check_reset_block — kernel API manual moment ✨

okay so real quick, this is a page from the Kernel API Manual (yes, the (9) section bestie, the kernel-internals one, we're in the big leagues) and it's about one tiny little function that asks the PHY a very important question. buckle up 🎀

✨ NAME ✨

igb_check_reset_block — literally just checks if the PHY reset is blocked. that's it. that's the whole job. no cap 💅

🦋 SYNOPSIS 🦋

s32 igb_check_reset_block (struct e1000_hw *hw );

it takes one arg and gives you back an s32. simple, clean, iconic.

🎀 ARGUMENTS 🎀

  • hw — pointer to the HW structure (a struct e1000_hw *, to be exact). it's giving "here's the hardware, go look at it" energy. hand it over and the function will do its little investigation 👑

🌸 DESCRIPTION 🌸

okay so here's the tea. this function reads the PHY management control register and checks whether a PHY reset is blocked.

then it reports back:

  • if a reset is not blocked → it returns 0 (we love a clean success, slay 💖)
  • otherwise → it returns E1000_BLK_PHY_RESET (12), i.e. yeah babe, the reset is blocked, no touchy 🚫

that's the entire vibe. read a register, tell you the truth, move on. main character energy fr fr ✨

💜 SEE ALSO 💜

so if you wanna go down the whole PHY rabbit hole (and honestly? obsessed), the source lives in the kernel file ./drivers/net/ethernet/intel/igb/e1000_phy.c — go read it, it's right there 🫶

and here's the full friend group, everyone's invited:

like, the whole squad. no one left out 😭💅

and that's the page bestie!! 🍓 this one came from ./drivers/net/ethernet/intel/igb, dated October 2026, and it's igb_check_reset_block(9) signing off — stay blocked or stay unblocked, but either way stay iconic 🌈⭐🧚

📦 where this page comes from