STRUCT TB_CAP_EXTENDED_LONG(9)

💅 struct tb_cap_extended_long(9) — Kernel API Manual, bestie 💅

okay so welcome to the group chat for struct tb_cap_extended_long(9), aka the Kernel API Manual page you didn't know you needed. We're gonna get you fluent, no cap. 🫶

🌸 NAME 🌸

struct tb_cap_extended_long — Switch extended long capability ✨

🌈 SYNOPSIS 🌈

Here's the struct exactly as it lives, bestie — no edits, no "improvements", periodt:

       struct tb_cap_extended_long {
           u8 zero1;
           u8 cap;
           u8 vsec_id;
           u8 zero2;
           u16 next;
           u16 length;
        };

🫶 Members 🫶

• zero1 — this field should be zero 🙈 like literally, bestie, keep it zero.
• cap — base capability ID (see enum tb_switch_cap) 💖.
• vsec_id — vendor specific capability ID (see enum switch_vse_cap) 🎀.
• zero2 — this field should be zero 💅 yes, this one too.
• next — pointer to the next capability 🌸.
• length — length of this capability ⭐.

👑 SEE ALSO 👑

• Kernel file ./drivers/thunderbolt/tb_regs.h
• struct tb_cap_extended_short(9), struct tb_cap_any(9) 🦋

k bye bestie 💋 — this iconic little page comes from ./drivers/thunderbolt, dated October 2026, and it's literally struct tb_cap_extended_long(9) at the bottom. mwah 🫶✨