sfp_get_module_info(9)

✨ sfp_get_module_info(9) ✨

okay bestie, so this one is from the Kernel API Manual, section 9, and it's literally the little function that tells you what kind of SFP module you're dealing with 💅 she's short, she's sweet, she's essential.

---

🎀 NAME 🎀

sfp_get_module_info — get the ethtool_modinfo for a SFP module 🦋

---

🌸 SYNOPSIS 🌸

int sfp_get_module_info (struct sfp_bus *bus , struct ethtool_modinfo
*modinfo );

---

💖 ARGUMENTS 💖

• bus — a pointer to the struct sfp_bus structure for the sfp module 👑 like, this is the bus you're asking about, bestie
• modinfo — a struct ethtool_modinfo 🎀 this is the lil container that's gonna get filled in

---

✨ DESCRIPTION ✨

So what she does: she fills in the type and eeprom_len parameters inside modinfo for a module sitting on the sfp bus you specified with bus 🫶

Returns 0 on success or a negative errno number, no cap 😭 so like, always check the return value, okay?

---

🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/phy/sfp-bus.c 🦋
• struct sfp_bus(9)
• sfp_select_interface(9)
• sfp_bus_put(9)
• sfp_get_module_eeprom(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)

---

go read the whole squad, they all hang out in ./drivers/net/phy together 💀

---

and that's the whole page, bestie 🧚 she lives in ./drivers/net/phy, dropped October 2026, and the manual name is sfp_get_module_info(9) in case you forgot already 💜 mwah, slay, go read some kernel source ✨