sfp_get_module_eeprom(9)

💖 sfp_get_module_eeprom(9) 💖

okay bestie, welcome to the Kernel API Manual entry for sfp_get_module_eeprom(9) — yes, the SFP module EEPROM reader herself. Pull up a chair, hydrate, and let's get into it 🫶

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🌸 NAME 🌸

sfp_get_module_eeprom — Read the SFP module EEPROM. That's the whole vibe. No cap ✨

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🎀 SYNOPSIS 🎀

int sfp_get_module_eeprom (struct sfp_bus *bus , struct ethtool_eeprom *ee , u8 *data );

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🦋 ARGUMENTS 🦋

okay so here's what you're handing over:

• bus — a pointer to the struct sfp_bus structure for the sfp module. iconic pointer behavior 💅
• ee — a struct ethtool_eeprom.
• data — buffer to contain the EEPROM data (must be at least ee->len bytes). do not skimp on the buffer, bestie 😭

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🌈 DESCRIPTION 🌈

Read the EEPROM as specified by the supplied ee. See the documentation for struct ethtool_eeprom for the region to be read — that's where the details live, iykyk.

Returns 0 on success or a negative errno number. Short, sweet, and very much giving “check the return value” energy 💀

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👑 SEE ALSO 👑

the whole friend group, fr fr:

• Kernel file ./drivers/net/phy/sfp-bus.c struct sfp_bus(9)
• sfp_select_interface(9)
• sfp_bus_put(9)
• sfp_get_module_info(9)
• sfp_get_module_eeprom_by_page(9)
• sfp_upstream_start(9)
• sfp_upstream_stop(9)
• sfp_upstream_set_signal_rate(9)
• sfp_bus_find_fwnode(9)
• sfp_bus_add_upstream(9)
• sfp_bus_del_upstream(9)
• sfp_get_name(9)

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Byeee 🫶 this page's source/version line is ./drivers/net/phy, it's dated October 2026, and yes, it's still the sfp_get_module_eeprom(9) page. Mwah 💋✨