emac_dev_tx_timeout(9)

📦 version 7.3.1, in nixpkgs unstable

💅 emac_dev_tx_timeout(9) — like, the EMAC Transmit Timeout function, bestie

okay so this is a page from the Kernel API Manual and honestly? it's a whole mood. it's giving "your NIC ghosted the network stack" energy and we're gonna talk about it. 🫶

✨ NAME ✨

emac_dev_tx_timeout — the EMAC Transmit timeout function, no cap 💖

🌸 SYNOPSIS 🌸

void emac_dev_tx_timeout (struct net_device *ndev , unsigned int txqueue );

like literally that's the whole signature. void return, two args, iconic. 👑

🎀 ARGUMENTS 🎀

  • ndev — the DaVinci EMAC network adapter itself, the main character of this whole situation 🌈
  • txqueue — the index of the hung transmit queue. yes bestie, the one that's stuck. the problematic one. 💀

🦋 DESCRIPTION 🦋

so here's the tea 🍓 — this function gets called when the system notices that a skb timeout period has expired. and why would that happen? potentially because of a fault in the adapter, where it's just... not able to send the skb out on the wire. like it's literally failing to do its one job. 😭

what we do about it: we teardown the TX channel, assuming it's a hardware error (which, valid assumption honestly), and then we re-initialize the TX channel so hardware operation can happen again. glow-up via full reset, we love to see it ✨🔥

💜 SEE ALSO 💜

kernel file ./drivers/net/ethernet/ti/davinci_emac.c — the source, go read it iykyk 📖

then the whole friend group, in order, fr fr:

ok that's the whole page bestie, nothing skipped, nothing lost 💅 go forth and handle your timeouts 🧚

⭐ and finally, a cute lil sign-off: this one lives in ./drivers/net/ethernet/ti, dated October 2026 — mwah, periodt. 💖🎀🦋

📦 where this page comes from