tb_xdomain_enable_paths(9)

💅 tb_xdomain_enable_paths(9) 💅

okay so this is the Kernel API Manual page for tb_xdomain_enable_paths(9), and bestie, it's giving “enable the DMA paths for an XDomain connection” energy. let's get into it 🫶

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✨ NAME ✨

tb_xdomain_enable_paths — Enable DMA paths for XDomain connection

🌸 SYNOPSIS 🌸

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

🎀 ARGUMENTS 🎀

• xd — XDomain connection, literally the main character here 💖
• transmit_path — HopID we are using to send out packets
• transmit_ring — DMA ring used to send out packets
• receive_path — HopID the other end is using to send packets to us
• receive_ring — DMA ring used to receive packets from receive_path

🦋 DESCRIPTION 🦋

The function enables DMA paths accordingly so that after successful return the caller can send and receive packets using high-speed DMA path. no cap, that's the whole vibe ✨

If a transmit or receive path is not needed, pass -1 for those parameters. yes bestie, -1 is the “not needed” signal here 🙈

🔥 RETURN 🔥

0 on success, negative errno otherwise. periodt 💅

🌈 SEE ALSO 🌈

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

• tb_xdomain_response(9)
• tb_xdomain_request(9)
• tb_register_protocol_handler(9)
• tb_unregister_protocol_handler(9)
• tb_register_service_driver(9)
• tb_unregister_service_driver(9)
• tb_service_properties_changed(9)
• tb_xdomain_alloc(9)
• tb_xdomain_add(9)
• tb_xdomain_remove(9)
• tb_xdomain_unregister(9)
• tb_xdomain_lane_bonding_enable(9)
• tb_xdomain_lane_bonding_disable(9)
• tb_xdomain_alloc_in_hopid(9)
• tb_xdomain_alloc_out_hopid(9)
• tb_xdomain_release_in_hopid(9)
• tb_xdomain_release_out_hopid(9)
• tb_xdomain_disable_paths(9)
• tb_xdomain_find_by_uuid(9)
• tb_xdomain_find_by_link_depth(9)
• tb_xdomain_find_by_route(9)
• tb_register_property_dir(9)
• tb_unregister_property_dir(9)

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made with 💖 in ./drivers/thunderbolt · October 2026 · tb_xdomain_enable_paths(9) 🎀