phy_interface_num_ports(9)

💖 phy_interface_num_ports(9) 💖

okay so welcome to the Kernel API Manual, bestie — today's main character is phy_interface_num_ports(9), and she is here to answer one very specific question.

🎀 NAME 🎀

phy_interface_num_ports — returns the number of links that can be carried by a given MAC-PHY physical link. If that number is unknown, it returns 0; otherwise it returns the number of links. periodt.

✨ SYNOPSIS ✨

int phy_interface_num_ports (phy_interface_t interface );

🌸 ARGUMENTS 🌸

• interface — the interface mode we wanna use to get the number of ports. that's the whole vibe check for this argument, no cap.

👀 SEE ALSO 👀

Kernel file: ./drivers/net/phy/phy-core.c — and here's the whole bestie squad:

• phy_speed_to_str(9)
• phy_duplex_to_str(9)
• phy_rate_matching_to_str(9)
• phy_fix_phy_mode_for_mac_delays(9)
• phy_set_max_speed(9)
• of_set_phy_timing_role(9)
• phy_resolve_aneg_pause(9)
• phy_resolve_aneg_linkmode(9)
• phy_check_downshift(9)
• __phy_read_mmd(9)
• phy_read_mmd(9)
• __phy_write_mmd(9)
• phy_write_mmd(9)
• phy_modify_changed(9)
• __phy_modify(9)
• phy_modify(9)
• __phy_modify_mmd_changed(9)
• phy_modify_mmd_changed(9)
• __phy_modify_mmd(9)
• phy_modify_mmd(9)
• phy_save_page(9)
• phy_select_page(9)
• phy_restore_page(9)
• phy_read_paged(9)
• phy_write_paged(9)
• phy_modify_paged_changed(9)
• phy_modify_paged(9)

🫶 cute little sign-off: source/version ./drivers/net/phy, dated October 2026. mwah, go forth and count those links 💅✨