phy_restart_aneg(9)

💅 phy_restart_aneg(9) 💅

okay bestie, so you're in the Kernel API Manual and the page you opened is phy_restart_aneg — yes, that's the function name and the manual page name, it's giving main character energy fr fr ✨

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🌸 NAME 🌸

phy_restart_aneg — restart auto-negotiation 🎀

Like, the whole entire point of this function. It restarts auto-negotiation. That's the vibe. No cap.

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🦋 SYNOPSIS 🦋

int phy_restart_aneg (struct phy_device *phydev );

look at her, she's so simple and so iconic 💖

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✨ ARGUMENTS ✨

• phydev — the target phy_device struct 👑 like, this is the phy device that's about to get its aneg restarted. your main character argument, if you will.

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💜 DESCRIPTION 💜

So basically: restart the autonegotiation on phydev. That's it, that's the function 🫶

Returns >= 0 on success, or a negative errno on error. So like — zero or above? slay, you're good. Negative? that's an error bestie, handle it 😭

ngl, >= 0 means zero also counts as success, so don't go doing if (ret) and getting all confused about it 🙈

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🌈 SEE ALSO 🌈

the way this list is long — she's an icon, she's a legend, and she is the moment. all of these are in the kernel file ./drivers/net/phy/phy.c 🔥 (iykyk):

• phy_print_status(9)
• phy_get_rate_matching(9)
• phy_config_interrupt(9)
• phy_aneg_done(9)
• phy_supported_speeds(9)
• phy_check_valid(9)
• phy_sanitize_settings(9)
• phy_mii_ioctl(9)
• phy_do_ioctl(9)
• phy_do_ioctl_running(9)
• __phy_hwtstamp_get(9)
• __phy_hwtstamp_set(9)
• phy_queue_state_machine(9)
• phy_trigger_machine(9)
• phy_ethtool_get_strings(9)
• phy_ethtool_get_sset_count(9)
• phy_ethtool_get_stats(9)
• __phy_ethtool_get_phy_stats(9)
• __phy_ethtool_get_link_ext_stats(9)
• phy_ethtool_get_plca_cfg(9)
• plca_check_valid(9)
• phy_ethtool_set_plca_cfg(9)
• phy_ethtool_get_plca_status(9)
• phy_start_cable_test(9)
• phy_start_cable_test_tdr(9)
• phy_check_link_status(9)
• phy_inband_caps(9)
• phy_config_inband(9)
• _phy_start_aneg(9)
• phy_start_aneg(9)
• phy_speed_down(9)
• phy_speed_up(9)
• phy_start_machine(9)
• phy_stop_machine(9)
• phy_error(9)
• phy_write_barrier(9)
• phy_disable_interrupts(9)
• phy_interrupt(9)
• phy_enable_interrupts(9)
• phy_update_stats(9)
• phy_request_interrupt(9)
• phy_free_interrupt(9)
• phy_get_next_update_time(9)
• phy_state_machine(9)
• phy_stop(9)
• phy_start(9)
• phy_mac_interrupt(9)
• phy_loopback(9)
• phy_eee_tx_clock_stop_capable(9)
• phy_eee_rx_clock_stop(9)
• phy_init_eee(9)
• phy_get_eee_err(9)
• phy_ethtool_get_eee(9)
• phy_ethtool_set_eee_noneg(9)
• phy_ethtool_set_eee(9)
• phy_ethtool_set_wol(9)
• phy_ethtool_get_wol(9)
• phy_ethtool_nway_reset(9)

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and that's the whole page, bestie 🧚 go forth and restart some auto-negotiation 💅

sign-off szn: this lil masterpiece lives in ./drivers/net/phy, stamped October 2026, and it's page phy_restart_aneg(9) of the Kernel API Manual — mwah, xoxo 💋🍓