phy_port_restrict_mediums(9)

💖 phy_port_restrict_mediums(9) — Kernel API Manual 💖

okay bestie, welcome to the group chat for phy_port_restrict_mediums(9) from the Kernel API Manual — this page is lowkey all about masking away some of a port's supported mediums, and it's giving “narrow the list once we know what this port actually is” energy ✨

🎀 NAME 🎀

phy_port_restrict_mediums — mask away some of the port's supported mediums 💅

✨ SYNOPSIS ✨

int phy_port_restrict_mediums (struct phy_port *port , unsigned long
       mediums );

🦋 ARGUMENTS 🦋

• port — the port to act upon, bestie 🫶
• mediums — a mask of mediums to support on the port 🌸

🔥 DESCRIPTION 🔥

So here's the tea ☕: this helper allows removing some mediums from a port's list of supported mediums. That happens once we have enough information about the port to know its nature — periodt. It's literally the “okay, now we know your vibe, let's trim the supported mediums” moment, and ngl that's kind of iconic.

💜 RETURN 💜

0 if the change was donne correctly, and a negative value otherwise 😭💀

(Yes bestie, “donne” is exactly the spelling on the page — we preserve the details around here, fr fr.)

🌈 SEE ALSO 🌈

Kernel file ./drivers/net/phy/phy_port.c plus these main-character functions, iykyk:

• phy_port_alloc(9)
• phy_port_destroy(9)
• phy_of_parse_port(9)
• phy_port_update_supported(9)
• phy_port_filter_supported(9)
• phy_port_get_type(9)

mwah 💖 source: ./drivers/net/phy · manual/version: Kernel API Manual · date: October 2026 · page: phy_port_restrict_mediums(9) — slay and goodbye 🎀✨