genphy_c37_read_status(9)

📦 version 7.3.1, in nixpkgs unstable

💅 genphy_c37_read_status(9) — like, the Kernel API Manual page, but make it make sense

okay so bestie, welcome to the manual page for genphy_c37_read_status (9) — yes the (9) means it lives in the kernel API section of the manual, we love a section number moment. This one is genuinely so cute and small: it checks the link and updates the current link state. That's it. That's the whole vibe. Let's go 🦋

✨ NAME ✨

genphy_c37_read_status — check the link status and update current link state 🎀

🌸 SYNOPSIS 🌸

int genphy_c37_read_status (struct phy_device *phydev , bool *changed );

like, two args, one int back. she's lowkey minimal and I respect it 💅

🫶 ARGUMENTS 🫶

  • phydev — the target phy_device struct, i.e. the PHY we're looking at. main character energy, honestly 👑
  • changed — a pointer to where we store whether the link changed. she's an out-param, so we're writing through her, not copying her 💖

🔥 DESCRIPTION 🔥

So here's the tea: it checks the link, then figures out the current state by comparing what we advertise against what the link partner advertises. It's giving "who said what" detective work but for autonegotiation 🕵️‍♀️

this function is for Clause 37 1000Base-X mode — specifically that, no cap. don't come here expecting it to handle everything else, she's got a niche 🧚

If the link has changed, changed is set to true; false otherwise. Periodt. ⭐

🌈 SEE ALSO 🌈

okay so this is the part where the kernel flexes its whole friend group. the file itself is ./drivers/net/phy/phy_device.c — go say hi 💜

like, the whole PHY extended universe showed up to the group chat 😭🔥

✨ that's the whole page, bestie — mwah 💋

shoutout to the source directory ./drivers/net/phy, dated October 2026, from the Kernel API Manual itself. she's stamped, she's official, she's iconic 🎀💖🦋

📦 where this page comes from