tb_switch_reset(9)

📦 version 7.3.1, in nixpkgs unstable

💅 tb_switch_reset — the Kernel API Manual page, bestie edition ✨

okay so this is tb_switch_reset(9) from the Kernel API Manual, and it's literally the "just reboot it" of Thunderbolt router land 🎀

✨ NAME ✨

tb_switch_reset — reset the router, that's it, that's the whole vibe 💫

🌸 SYNOPSIS 🌸

int tb_switch_reset (struct tb_switch *sw );

🦋 ARGUMENTS 🦋

  • sw — the router we're resetting. the main character, if you will 👑

💖 DESCRIPTION 💖

So this one issues a reset to the router sw. and like, it works on any router, no gatekeeping 💅

For host routers, it resets all the downstream ports and cleans up the path config spaces accordingly — very thorough, very "I alphabetized my bookshelf" energy ✨

For device routers, it issues a downstream port reset through the parent router. side effect? there will be an unplug soon after this finishes 😭 so like... heads up, bestie, it's giving "rip it out" 🙈

And if the router isn't enumerated? it does nothing. literally nothing. zero notes, ghosted 💀

🌈 RETURN 🌈

  • 0 on success 🥳
  • negative errno otherwise 😔

🌟 SEE ALSO 🌟

Kernel file ./drivers/thunderbolt/switch.c — go read it, it's iconic 📖🫶

And the whole friend group, fr fr:

okay that's the whole page!! 💜 this dropped out of ./drivers/thunderbolt in October 2026, so like, mark your calendars bestie 🗓️✨ mwah, go reset something responsibly 😘💅

📦 where this page comes from