STRUCT HAM_START_MESSAGE_REQ(9)

🌸 struct ham_start_message_req — the kernel API manual, bestie edition 🌸

okay so this whole thing lives in struct ham_s..._message_req(9), which is the manual name — it's like the family name of the page iykyk. and yes we're doing Kernel API Manual vibes today 💅

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✨ NAME ✨

struct ham_start_message_req — literally the start message, that's it, that's the whole thing 🫶

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🦋 SYNOPSIS 🦋

okay so here's the struct, and bestie i need you to look at it EXACTLY as written, no cap:

struct ham_start_message_req {
    struct ham_bus_message header;
    u16 supported_version;
    u8 heci_capabilities_length;
    u8 heci_capabilities[];
 };

the way that last member is just vibing there with empty brackets [] — iconic flexible array energy honestly ✨

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💜 Members 💜

• header — this one's the bus message header, and it's giving HAM_BUS_CMD_START_REQ. like that's the command it carries 🎀
• supported_version — the supported protocol version. literally just telling you which version is slaying today 💅
• heci_capabilities_length — the protocol capabilities length, and it's in bytes, so keep that in mind bestie 📏
• heci_capabilities — the actual protocol capabilities data. this is the main character of the flexible array situation 👑

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🌈 SEE ALSO 🌈

okay so these are the other pages that hang out with this one in the kernel file ./drivers/misc/issei/hw_msg.h, under struct:

• ham_setup_shared_memory_req(9)
• struct ham_setup_shared_memory_res(9)
• struct control_buffer(9)
• struct ham_message_header(9)
• struct ham_bus_message(9)
• struct ham_start_message_res(9)
• struct ham_get_clients_req(9)
• struct ham_client_properties(9)
• struct ham_get_clients_res(9)

it's giving a whole friend group fr fr 🫶 go click through them, you'll be obsessed 💖

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ngl there's no extra lore hiding in this page — the struct, the members, and the see-alsos are the whole meal. ate and left no crumbs 🍓

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and that's the tea, bestie 🧚 this one comes from ./drivers/misc/issei, dated October 2026, and the footer still calls it struct ham_s..._message_req(9) — so yeah, we're keeping the abbreviated name too, slay 💅✨🌟