ENUM TB_PATH_PORT(9)

okay so bestie, you've landed on enum tb_path_port(9) from the Kernel API Manual, and honestly? it's a little baddie of an enum that just tells you where on a path something should activate 💅 no cap, that's the whole vibe.

🎀 NAME 🎀

enum tb_path_port — path options mask ✨

like, it's a mask of options for picking which hops on a path get activated. simple, iconic, does exactly what it says on the tin 🫶

🌸 SYNOPSIS 🌸

enum tb_path_port {
    TB_PATH_NONE ,
    TB_PATH_SOURCE ,
    TB_PATH_INTERNAL ,
    TB_PATH_DESTINATION ,
    TB_PATH_ALL

};

🧚 Constants 🧚

okay so these are the actual constants, and each one is a different lil' vibe check for your path 👑

• TB_PATH_NONE — do not activate on any hop on path. literally none. not a single one. it's giving "i'm just here for the aesthetic" 💀
• TB_PATH_SOURCE — activate on the first hop (out of src). main character energy at the start of the journey 🌟
• TB_PATH_INTERNAL — activate on the intermediate hops (not the first/last). the middle-child hops, but make it slay 🎀
• TB_PATH_DESTINATION — activate on the last hop (into dst). grand finale behaviour, periodt 💖
• TB_PATH_ALL — activate on all hops on the path. every single one. full send, no skips, ate 🔥

🦋 SEE ALSO 🦋

bestie there is a lot of lore here, so buckle up — all of these live in the kernel file ./drivers/thunderbolt/tb.h 📁 and yes, every single one is getting its moment:

• struct tb_nvm(9)
• enum tb_switch_tmu_mode(9)
• struct tb_switch_tmu(9)
• struct tb_switch(9)
• struct tb_bandwidth_group(9)
• struct tb_port(9)
• struct usb4_port(9)
• struct tb_retimer(9)
• struct tb_path_hop(9)
• struct tb_path(9)
• struct tb_cm_ops(9)
• tb_upstream_port(9)
• tb_is_upstream_port(9)
• tb_port_has_remote(9)
• tb_domain_event(9)
• tb_switch_for_each_port(9)
• tb_switch_downstream_port(9)
• tb_switch_depth(9)
• tb_switch_is_icm(9)
• tb_switch_tmu_is_configured(9)
• tb_switch_tmu_is_enabled(9)
• tb_switch_clx_is_enabled(9)
• tb_port_path_direction_downstream(9)
• tb_for_each_port_on_path(9)
• tb_for_each_upstream_port_on_path(9)
• tb_path_for_each_hop(9)
• tb_downstream_route(9)
• tb_xdomain_downstream_port(9)
• usb4_switch_version(9)
• tb_switch_is_usb4(9)
• enum usb4_sb_target(9)
• enum usb4_margin_sw_error_counter(9)
• struct usb4_port_margining_params(9)

and that's the whole page, bestie 🫶 this lil' icon comes from ./drivers/thunderbolt, dated October 2026 — like, she's from the future and still serving 💜✨ catch you on the next manpage, mwah 🎀