mlx4_get_module_info(9)

💖 mlx4_get_module_info 💖

okay so bestie, welcome to mlx4_get_module_info from the Kernel API Manual (section 9, iykyk). This one is lowkey a cable-module eeprom reader, and it’s giving “put the data where it belongs” energy. 🎀

🌸 NAME 🌸

mlx4_get_module_info — Read cable module eeprom data

✨ SYNOPSIS ✨

int mlx4_get_module_info (struct mlx4_dev *dev , u8 port , u16 offset ,
       u16 size , u8 *data );

🎀 ARGUMENTS 🎀

• dev — the mlx4_dev. That’s the device we’re talking to, bestie. 🫶
• port — port number. 💅
• offset — byte offset in eeprom to start reading data from. 🧚
• size — num of bytes to read. 🍓
• data — output buffer to put the requested data into. ✨

🦋 DESCRIPTION 🦋

Reads cable module eeprom data, and puts the outcome data into the data pointer parameter. On success it returns the num of read bytes; otherwise it returns a negative error code. No cap, that’s the whole contract. 😭

🌈 SEE ALSO 🌈

Kernel file: ./drivers/net/ethernet/mellanox/mlx4/port.c — go peek, iykyk. 👑

💖 cute sign-off: the source/version line is ./drivers/net/ethernet/mellano... and the date is October 2026. Bye bestie, slay those eeprom reads! 🫶✨