phy_caps_from_interface(9)

💅 phy_caps_from_interface(9)

okay so bestie, welcome to the Kernel API Manual entry for phy_caps_from_interface — literally the glow-up we all needed. sit down, grab a strawberry 🍓, and let's get into it.

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✨ NAME ✨

phy_caps_from_interface — bestie, it gets the link capa from a given PHY interface. that's it. that's the whole vibe. 🦋

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🌸 SYNOPSIS 🌸

unsigned long phy_caps_from_interface (phy_interface_t interface );

no cap, that's the whole signature. unsigned long in, unsigned long out, main character energy from start to finish 👑

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🎀 ARGUMENTS 🎀

• interface — the PHY interface we wanna get the possible Speed/Duplex from. like, hand her an interface and she'll tell you what speeds and duplex modes are even achievable on it 💖

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⭐ RETURN ⭐

it returns a bitmask of LINK_CAPA_xxx values — yep, a whole little mask of caps — that can actually be achieved with the interface you provided. it's giving "here's what's possible for you, queen" 🔥

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🧚 SEE ALSO 🧚

this is the friend group, iykyk — they all live in the kernel file ./drivers/net/phy/phy_caps.c:

• phy_caps_init(9)
• phy_caps_speeds(9)
• phy_caps_lookup_by_linkmode(9)
• phy_caps_lookup_by_linkmode_rev(9)
• phy_caps_lookup(9)
• phy_caps_linkmode_max_speed(9)
• phy_caps_valid(9)
• phy_caps_linkmodes(9)
• phy_caps_medium_get_supported(9)
• phy_caps_mediums_from_linkmodes(9)

go read them, they ate 💅✨

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ok that's the whole page bestie, no filler, no notes left behind 🫶

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and that's a wrap! 🌈 this icon of a manpage lives in ./drivers/net/phy and it's dated October 2026 — so yeah, she's from the future and still slaying. mwah 💜🎀