STRUCT HBM_CLIENT_CONNECT_RESPONSE(9)

💖 struct hbm_client_connect_response (9) — Kernel API Manual 🎀

okay so bestie, bestie, listen — we're in the kernel API manual today, and the star of the show is struct hbm_client_connect_response. it's literally the connect/disconnect response, no cap. she's small, she's iconic, she's doing the absolute most with only four bytes. 👑

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✨ NAME ✨

struct hbm_client_connect_response — connect/disconnect response 🫶

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✨ SYNOPSIS ✨

here's the whole vibe, character for character, don't touch it:

struct hbm_client_connect_response {
    u8 hbm_cmd;
    u8 me_addr;
    u8 host_addr;
    u8 status;
 };

look at her. four little u8s. main character energy fr fr. 💅

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✨ MEMBERS ✨

okay so let's meet the cast, one field at a time 🌸

• hbm_cmd — the bus message command header. she's the header, she announces what this whole thing is. the opening act. 🎀
• me_addr — the address of the client in ME. like, where the client lives on the ME side of things. 🦋
• host_addr — the address of the client in the driver. same client, different address, host-side this time. iykyk. ✨
• status — the status of the request. the receipts. the "how did it go" field. 💀

ngl there is genuinely nothing more to it — those four members are the entire struct. small but mighty, periodt.

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🌈 SEE ALSO 🌈

this is the friend group, and they ALL showed up to the group chat. every single one. 😭💜

• Kernel file ./drivers/misc/mei/hw.h
• enum mei_hbm_status(9)
• enum mei_ext_hdr_type(9)
• struct mei_ext_hdr(9)
• struct mei_ext_meta_hdr(9)
• struct mei_ext_hdr_vtag(9)
• mei_ext_begin(9)
• mei_ext_last(9)
• struct mei_ext_hdr_gsc_h2f(9)
• struct mei_ext_hdr_gsc_f2h(9)
• mei_ext_next(9)
• mei_ext_hdr_len(9)
• struct mei_msg_hdr(9)
• struct mei_hbm_cl_cmd(9)
• enum hbm_host_enum_flags(9)
• struct hbm_host_enum_request(9)
• struct mei_client_properties(9)
• struct hbm_add_client_request(9)
• struct hbm_add_client_response(9)
• struct hbm_power_gate(9)
• struct hbm_client_connect_request(9)
• struct hbm_notification_request(9)
• struct hbm_notification_response(9)
• struct hbm_notification(9)
• struct hbm_dma_mem_dscr(9)
• struct hbm_dma_setup_request(9)
• struct hbm_dma_setup_response(9)
• struct hbm_dma_ring_ctrl(9)
• struct hbm_capability_request(9)
• struct hbm_capability_response(9)
• struct hbm_client_dma_map_request(9)
• struct hbm_client_dma_unmap_request(9)
• struct hbm_client_dma_response(9)

like i said. the whole group chat. don't leave anyone on read. 🔥

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and that's the page, bestie!! 🧚💖 this one lives down in ./drivers/misc/mei and it's dated October 2026 — so yeah, go read it, slay, and remember: struct hbm_client_connect_response(9) ate and left absolutely no crumbs. 🍓⭐👑