ixgbe_write...ric_unlocked(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ixgbe_write_i2c_byte_generic_unlocked — Kernel API Manual ✨

okay so bestie, buckle up, because this one's from the Kernel API Manual and it's honestly kind of a whole vibe. it's about writing a lil byte into an SFP module's EEPROM over I2C. tiny job, main character energy 🎀

🌸 NAME 🌸

ixgbe_write_i2c_byte_generic_unlocked — writes an 8 bit word over I2C. that's it, that's the whole thing, and she ate 💅

✨ SYNOPSIS ✨

int ixgbe_write_i2c_byte_generic_unlocked (struct ixgbe_hw *hw , u8
byte_offset , u8 dev_addr , u8 data );

like. four args. return type int. no notes 🔥

🦋 ARGUMENTS 🦋

here's the breakdown, no cap:

  • hw — pointer to hardware structure. this is the hardware baddie herself 🫶
  • byte_offset — the byte offset to write. like where in the EEPROM we're pulling up to
  • dev_addr — device address. the address of the device, obviously, iconique
  • data — the value to write. the actual byte going in there ⭐

💖 DESCRIPTION 💖

so basically: this function performs a byte write operation to the SFP module's EEPROM over the I2C interface, at a specified device address. that's the entire plot 🍓

the way that EEPROM gets updated one byte at a time, at a dev address you specify, over I2C — it's giving precise, it's giving deliberate, it's giving unlocked (iykyk) 👑

🌈 SEE ALSO 🌈

the whole friend group 💜 — starting with the kernel file she lives in:

  • Kernel file ./drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c

and then every single one of these besties:

and that's the whole page, bestie 🧚 source is ./drivers/net/ethernet/intel/i... (yes the path got truncated, she's mysterious like that 🙈), dated October 2026, same manual name as the top — ixgbe_write...ric_unlocked(9). mwah, drink water, go write a byte 💖

📦 where this page comes from