tb_domain_a...domain_paths(9)

📦 version 7.3.1, in nixpkgs unstable

okay bestie, welcome to the tb_domain_a...domain_paths(9) page from the Kernel API Manual 💖 this one is short, sweet, and very “DMA paths but make it XDomain.”

✨ NAME ✨

tb_domain_approve_xdomain_paths — Enable DMA paths for XDomain 🎀

💅 SYNOPSIS 💅

int tb_domain_approve_xdomain_paths (struct tb *tb , struct tb_xdomain
       *xd , int transmit_path , int transmit_ring , int receive_path ,
       int receive_ring );

🎀 ARGUMENTS 🎀

  • tb — the domain that’s enabling the DMA paths, periodt.
  • xd — the XDomain that the DMA paths are created to 🦋
  • transmit_path — the HopID we are using to send out packets.
  • transmit_ring — the DMA ring used to send out packets.
  • receive_path — the HopID the other end is using to send packets to us.
  • receive_ring — the DMA ring used to receive packets from receive_path.

🦋 DESCRIPTION 🦋

okay so what this actually does: it calls the connection manager specific method to enable DMA paths to the XDomain in question. that’s the whole assignment, no cap ✨

🌸 RETURN 🌸

  • 0 — On success. 🎉
  • -ENOTSUPP — If the connection manager implementation does not support XDomains. 🚫
  • Negative errno — An error occurred. 😭

🔥 SEE ALSO 🔥

Kernel file: ./drivers/thunderbolt/domain.c

signed off with love from the ./drivers/thunderbolt source/version, dated October 2026 🌈💜

📦 where this page comes from