ENUM NTB_DEFAULT_PORT(9)

📦 version 7.3.1, in nixpkgs unstable

✨ enum ntb_default_port — NTB default port number ✨

okay so this is a page from the Kernel API Manual, section 9, and it's genuinely tiny but lowkey iconic — it's just the little enum that tells you which port NTB considers "the default one" 💅

🦋 NAME

enum ntb_default_port — NTB default port number, that's it, that's the whole vibe 🎀

🌸 SYNOPSIS

enum ntb_default_port {
    NTB_PORT_PRI_USD ,
    NTB_PORT_SEC_DSD

};

like, two members. two. she's minimal, she's clean, she's giving "I don't need a hundred fields to be main character" ✨

💖 Constants

  • NTB_PORT_PRI_USD — the default port for the NTB_TOPO_PRI / NTB_TOPO_B2B_USD topologies. so if you're running primary or the B2B upstream-downstream setup, this is your girl 🫶
  • NTB_PORT_SEC_DSD — the default port for the NTB_TOPO_SEC / NTB_TOPO_B2B_DSD topologies. secondary and B2B downstream-upstream live here, no cap 💀
bestie pls note: these are topology defaults, not magic — the enum literally only exists to hand the right port number back for those topo pairings. don't go assigning extra meaning to it, i'm begging 🙈

👑 SEE ALSO

okay this section ATE, it's the whole friend group 💜 the source of truth for all of it lives in the kernel file ./include/linux/ntb.h, and here's everyone she's linked with:

🧚 lil reminder that this page came out of ./include/linux and it's dated October 2026 — so yeah, she's from the future, respectfully 💅✨

and that's the whole page bestie, go read ntb_default_port_number(9) next if you wanna see her in action 🍓🫶

📦 where this page comes from