ixgbe_ptp_rx_hang(9)

📦 version 7.3.1, in nixpkgs unstable

💖 ixgbe_ptp_rx_hang — the kernel API manual, but make it make sense 🎀

okay bestie, so this page is from the Kernel API Manual, and the function in question is ixgbe_ptp_rx_hang. Yes it's a mouthful, no you don't have to pronounce it, we just need to know what it does. Let's go ✨

✨ NAME ✨

ixgbe_ptp_rx_hang — it's the lil detector that catches the error case when the Rx timestamp registers got latched, aka stuck, aka not slaying 😭

🌸 SYNOPSIS 🌸

void ixgbe_ptp_rx_hang (struct ixgbe_adapter *adapter );

that's it, that's the whole signature. void return, one argument, no drama 💅

🦋 ARGUMENTS 🦋

  • adapter — the private network adapter structure. it's the main character of this call, everything happens through it 🫶

🔥 DESCRIPTION 🔥

kay so listen. this watchdog task is scheduled specifically to detect an error case — and the error case is that the hardware dropped an Rx packet that was timestamped when the ring was full 💀

the way that sounds scary is because it kind of is: this particular error is rare, but the aftermath is that it leaves the device in a state where it's unable to timestamp any future packets 😭 so like, one dropped packet and the whole timestamping vibe is cooked. that's why the watchdog exists, iykyk.

ngl this is the whole reason the function is here — rare error, but a permanently broken timestamping state if nobody catches it. respect the watchdog 👑

💜 SEE ALSO 💜

the kernel file lives at ./drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c — that's where the source of truth is, go read it, it's giving lore 📖

and here's the whole friendship group of related functions, all of them, no cap, none skipped:

and that's the page!! 🎀 source path got truncated in the footer to ./drivers/net/ethernet/intel/i..., dated October 2026, and this whole manual entry is filed under ixgbe_ptp_rx_hang(9) — periodt, go timestamp some packets responsibly bestie 🌈⭐💖

📦 where this page comes from