STRUCT TB_PROPERTY(9)

✨ struct tb_property(9) ✨

okay so bestie, welcome to the struct tb_property glow-up 💅 this is a page from the Kernel API Manual, and it's all about the XDomain property — yes that's the NAME, and yes it's the whole vibe 🦋

🌸 SYNOPSIS 🌸

Here's the whole struct, character for character, no cap — copy it exactly:

struct tb_property {
    struct list_head list;
    char key[TB_PROPERTY_KEY_SIZE + 1];
    enum tb_property_type type;
    size_t length;
    union {
      struct tb_property_dir *dir;
      u8 *data;
      char *text;
      u32 immediate;
    } value;
 };

🎀 Members 🎀

• list — used to link properties together in a directory 🔗 it's giving "let's all hold hands" energy.
• key — the key for the property, and it's always terminated (the struct literally reserves TB_PROPERTY_KEY_SIZE + 1 so it can be) ✨
• type — the type of the property. this is the main character for figuring out what's in value 👑
• length — length of the property data, measured in dwords (not bytes, bestie, dwords 💀)
• value — the property value itself, and it's a union of several possible shapes 🫶

💖 Description 💖

here's the whole tea ☕: users check type to figure out which field inside value is the one that's actually filled. that's it, that's the system. vibe check passed ✅

🌈 SEE ALSO 🌈

Kernel file ./include/linux/thunderbolt.h, plus this whole friend group:

• enum tb_security_level(9)
• struct tb(9)
• struct tb_property_dir(9)
• enum tb_link_width(9)
• struct tb_xdomain(9)
• struct tb_protocol_handler(9)
• struct tb_service(9)
• struct tb_service_driver(9)
• struct tb_nhi(9)
• struct tb_ring(9)
• enum ring_desc_flags(9)
• struct ring_frame(9)
• tb_ring_rx(9)
• tb_ring_tx(9)
• tb_ring_dma_device(9)

okay that's the page!! 🧚 sign-off time: this one lives in ./include/linux and it's dated October 2026 — iconic, obsessed, periodt 💜🍓