genphy_c45_ethtool_set_eee(9)

💖 genphy_c45_ethtool_set_eee — the "turn EEE on/off without breaking stuff" girlie 💖

okay so bestie, welcome to the Kernel API Manual ✨ this is genphy_c45_ethtool_set_eee(9) and she is literally the main character of EEE toggling, no cap 🎀

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🌸 NAME 🌸

genphy_c45_ethtool_set_eee — set EEE supported and status 💅

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✨ SYNOPSIS ✨

int genphy_c45_ethtool_set_eee (struct phy_device *phydev , struct
       ethtool_keee *data );

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🦋 ARGUMENTS 🦋

• phydev — the target phy_device struct 🫶 like, the phy we're talking to, she's the one
• data — the ethtool_keee data ⭐ this is the payload carrying all the EEE deets

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🌈 DESCRIPTION 🌈

so what she actually does 👑 she sets the Supported / Advertisement / LP Advertisement capabilities. that's the whole vibe check, fr fr.

here's the iconic part: if eee_enabled is false, then like, no link modes get advertised — but the link modes that were previously advertised are retained 🤯 which means you can enable/disable EEE in a non-destructive way. it's giving respectful, considerate, doesn't burn the house down energy 💀✨

and the return value? she's flexible:

• returns either an error code 😭
• 0 if there was no change 😐 (calm, uneventful, we love a stable queen)
• a positive value if there was a change which triggered auto-neg 🔥 (something happened!! auto-neg got woken up, slay)

bestie don't forget: that non-destructive retained-advertisement behavior is the whole point of the function. don't go assuming the old modes got wiped 🙈

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🧚 SEE ALSO 🧚

Kernel file ./drivers/net/phy/phy-c45.c — go read her, she's iconic 💜

• genphy_c45_baset1_able(9)
• genphy_c45_pma_can_sleep(9)
• genphy_c45_pma_resume(9)
• genphy_c45_pma_suspend(9)
• genphy_c45_pma_baset1_setup_master_slave(9)
• genphy_c45_pma_setup_forced(9)
• genphy_c45_an_config_aneg(9)
• genphy_c45_an_disable_aneg(9)
• genphy_c45_restart_aneg(9)
• genphy_c45_check_and_restart_aneg(9)
• genphy_c45_pma_soft_reset(9)
• genphy_c45_an_setup_master_slave(9)
• genphy_c45_read_master_slave(9)
• genphy_c45_aneg_done(9)
• genphy_c45_read_link(9)
• genphy_c45_read_lpa(9)
• genphy_c45_pma_baset1_read_master_slave(9)
• genphy_c45_read_pma(9)
• genphy_c45_read_mdix(9)
• genphy_c45_write_eee_adv(9)
• genphy_c45_read_eee_adv(9)
• genphy_c45_read_eee_lpa(9)
• genphy_c45_read_eee_cap1(9)
• genphy_c45_read_eee_cap2(9)
• genphy_c45_read_eee_abilities(9)
• genphy_c45_an_config_eee_aneg(9)
• genphy_c45_pma_baset1_read_abilities(9)
• genphy_c45_pma_read_ext_abilities(9)
• genphy_c45_pma_read_abilities(9)
• genphy_c45_read_status(9)
• genphy_c45_config_aneg(9)
• genphy_c45_fast_retrain(9)
• genphy_c45_plca_get_cfg(9)
• genphy_c45_plca_set_cfg(9)
• genphy_c45_plca_get_status(9)
• genphy_c45_eee_is_active(9)
• genphy_c45_ethtool_get_eee(9)
• oatc14_cable_test_get_result_code(9)
• genphy_c45_oatc14_cable_test_get_status(9)
• genphy_c45_oatc14_cable_test_start(9)
• oatc14_update_sqi_capability(9)
• genphy_c45_oatc14_get_sqi_max(9)
• genphy_c45_oatc14_get_sqi(9)

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okay and before you go 🎀 this whole page lives in ./drivers/net/phy, it's from October 2026, and it's the 9th-section Kernel API Manual entry for genphy_c45_ethtool_set_eee(9) 🦋 mwah, go set some EEE bestie, ily 💖✨