phy_get_sfp_port(9)

💅 phy_get_sfp_port — the kernel API manual, bestie edition

okay so this is a page from the Kernel API Manual and it's about grabbing the first valid SFP port off a PHY. tiny function, big "i'm the one who finds your port" energy. let's get into it 🫶

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✨ NAME ✨

phy_get_sfp_port — literally returns the first valid SFP port of a PHY. that's the whole job. main character energy, minimal dialogue 🌸

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🦋 SYNOPSIS 🦋

struct phy_port * phy_get_sfp_port (struct phy_device *phydev );

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🎀 ARGUMENTS 🎀

• phydev — pointer to the PHY device you want the SFP port from. like, hand it your PHY and it goes shopping for the port 💅

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⭐ RETURN ⭐

the first active SFP (serdes) port of a PHY device. and if there aren't any? you get NULL, bestie. no port, no vibes, just NULL 😭

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👑 SEE ALSO 👑

the kernel file lives at ./drivers/net/phy/phy_device.c, and here's the whole friend group — literally the entire group chat, no one left out:

• phy_uses_state_machine(9)
• phy_register_fixup(9)
• genphy_match_phy_device(9)
• get_phy_c45_ids(9)
• get_phy_c22_id(9)
• get_phy_device(9)
• phy_device_register(9)
• phy_device_remove(9)
• phy_get_c45_ids(9)
• phy_find_next(9)
• phy_prepare_link(9)
• phy_connect_direct(9)
• phy_connect(9)
• phy_disconnect(9)
• phy_poll_reset(9)
• phy_sfp_connect_phy(9)
• phy_sfp_disconnect_phy(9)
• phy_sfp_attach(9)
• phy_sfp_detach(9)
• phy_sfp_probe(9)
• phy_attach_direct(9)
• phy_detach(9)
• phy_reset_after_clk_enable(9)
• genphy_config_advert(9)
• genphy_c37_config_advert(9)
• genphy_setup_forced(9)
• genphy_restart_aneg(9)
• genphy_check_and_restart_aneg(9)
• __genphy_config_aneg(9)
• genphy_c37_config_aneg(9)
• genphy_aneg_done(9)
• genphy_update_link(9)
• genphy_read_status_fixed(9)
• genphy_read_status(9)
• genphy_c37_read_status(9)
• genphy_soft_reset(9)
• genphy_read_abilities(9)
• phy_remove_link_mode(9)
• phy_advertise_supported(9)
• phy_advertise_eee_all(9)
• phy_support_eee(9)
• phy_disable_eee(9)
• phy_support_sym_pause(9)
• phy_support_asym_pause(9)
• phy_set_sym_pause(9)
• phy_set_asym_pause(9)
• phy_validate_pause(9)
• phy_get_pause(9)
• phy_get_internal_delay(9)
• phy_get_tx_amplitude_gain(9)
• phy_get_mac_termination(9)
• fwnode_mdio_find_device(9)
• fwnode_phy_find_device(9)
• fwnode_get_phy_node(9)
• phy_probe(9)
• phy_driver_register(9)

like... that's a lot of cousins, but every single one of them is invited to the function-reference party 🎉

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and that's the tea, bestie 💖✨

this cutie of a page ships from ./drivers/net/phy, dated October 2026, straight out of the Kernel API Manual. go find your port, queen 👑🦋