ixgbe_identi...dule_generic(9)
β¨ ixgbe_identify_qsfp_module_generic β bestie's guide to the QSFP detective π
okay so picture this: you're deep in the kernel, you're in ixgbe land, and somebody hands you a struct ixgbe_hw *. this page (from the Kernel API Manual, ixgbe_identify_qsfp_module_generic(9) section, hi bestie π«Ά) is literally the whole lore on ixgbe_identify_qsfp_module_generic. let's go π₯
πΈ NAME πΈ
ixgbe_identify_qsfp_module_generic β identifies QSFP modules β¨ iykyk
π SYNOPSIS π
int ixgbe_identify_qsfp_module_generic (struct ixgbe_hw *hw );
like, that's the whole vibe. one function, one argument, one int coming back at you π
π¦ ARGUMENTS π¦
hwβ pointer to hardware structure. yes, THE hardware structure. this is the main character of the whole call, no cap π
π DESCRIPTION π
so what does it actually do? it searches for and identifies the QSFP module, then assigns the appropriate PHY type. that's it. that's the tea π΅
ngl it's giving detective energy β it goes looking, it figures out what module is sitting there, and then it labels the PHY accordingly so everyone downstream knows what they're dealing with. periodt β¨
π SEE ALSO π
the whole friend group, fr fr β every single one of these cuties:
ixgbe_out_i2c_byte_ack(9)ixgbe_in_i2c_byte_ack(9)ixgbe_ones_comp_byte_add(9)ixgbe_read_i2c_combined_generic_int(9)ixgbe_write_i2c_combined_generic_int(9)ixgbe_probe_phy(9)ixgbe_identify_phy_generic(9)ixgbe_check_reset_blocked(9)ixgbe_get_phy_id(9)ixgbe_get_phy_type_from_id(9)ixgbe_reset_phy_generic(9)ixgbe_read_phy_reg_mdi(9)ixgbe_read_phy_reg_generic(9)ixgbe_write_phy_reg_mdi(9)ixgbe_write_phy_reg_generic(9)ixgbe_msca_cmd(9)ixgbe_mii_bus_read_generic_c22(9)ixgbe_mii_bus_read_generic_c45(9)ixgbe_mii_bus_write_generic_c22(9)ixgbe_mii_bus_write_generic_c45(9)ixgbe_mii_bus_read_c22(9)ixgbe_mii_bus_read_c45(9)ixgbe_mii_bus_write_c22(9)ixgbe_mii_bus_write_c45(9)ixgbe_x550em_a_mii_bus_read_c22(9)ixgbe_x550em_a_mii_bus_read_c45(9)ixgbe_x550em_a_mii_bus_write_c22(9)ixgbe_x550em_a_mii_bus_write_c45(9)ixgbe_get_first_secondary_devfn(9)ixgbe_x550em_a_has_mii(9)ixgbe_mii_bus_init(9)ixgbe_setup_phy_link_generic(9)ixgbe_setup_phy_link_speed_generic(9)ixgbe_get_copper_speeds_supported(9)ixgbe_get_copper_link_capabilities_generic(9)ixgbe_check_phy_link_tnx(9)ixgbe_setup_phy_link_tnx(9)ixgbe_reset_phy_nl(9)ixgbe_identify_module_generic(9)ixgbe_identify_sfp_module_generic(9)ixgbe_get_sfp_init_sequence_offsets(9)ixgbe_read_i2c_eeprom_generic(9)ixgbe_read_i2c_sff8472_generic(9)ixgbe_write_i2c_eeprom_generic(9)ixgbe_is_sfp_probe(9)ixgbe_read_i2c_byte_generic_int(9)ixgbe_read_i2c_byte_generic(9)ixgbe_read_i2c_byte_generic_unlocked(9)ixgbe_write_i2c_byte_generic_int(9)ixgbe_write_i2c_byte_generic(9)ixgbe_write_i2c_byte_generic_unlocked(9)ixgbe_i2c_start(9)ixgbe_i2c_stop(9)ixgbe_clock_in_i2c_byte(9)ixgbe_clock_out_i2c_byte(9)ixgbe_get_i2c_ack(9)ixgbe_clock_in_i2c_bit(9)ixgbe_clock_out_i2c_bit(9)ixgbe_raise_i2c_clk(9)ixgbe_lower_i2c_clk(9)ixgbe_set_i2c_data(9)ixgbe_get_i2c_data(9)ixgbe_i2c_bus_clear(9)ixgbe_tn_check_overtemp(9)
also the kernel file itself lives at ./drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c β that's where the magic happens, go read it π§
okay that's the page!! π mwah π this one's sourced from ./drivers/net/ethernet/intel/i... and dated October 2026, so like, stay fresh bestie π
β¨ don't forget to cite it, iykyk π
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms