ENUM MEI_EXT_HDR_TYPE(9)

✨ enum mei_ext_hdr_type ✨

okay bestie, so this is a page straight out of the Kernel API Manual — it's enum mei_ext_hdr_type, aka the extended header type used in extended header TLV 💅 like, that's literally the whole name, no cap.

---

🎀 NAME 🎀

enum mei_ext_hdr_type — the extended header type used in extended header TLV. that's it, that's the vibe 🦋

---

🌸 SYNOPSIS 🌸

enum mei_ext_hdr_type {
    MEI_EXT_HDR_NONE ,
    MEI_EXT_HDR_VTAG ,
    MEI_EXT_HDR_GSC

};

look at her. three constants, all lined up, absolutely iconic 👑

---

💖 Constants 💖

• MEI_EXT_HDR_NONE — the sentinel. she's giving "i'm just here to mark the spot" energy 🙈
• MEI_EXT_HDR_VTAG — the vtag header. yes bestie, that's the whole description, she's lowkey mysterious 🎀
• MEI_EXT_HDR_GSC — the gsc header. same deal, short and slay ✨

---

🦋 SEE ALSO 🦋

the cross-reference list on this one is long, like she did NOT come to play. all of this lives in Kernel file ./drivers/misc/mei/hw.h:

enum mei_hbm_status(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_client_connect_response(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)

fr fr, go read those next, the lore goes deep 🌈

---

and that's the whole page, bestie 🫶 this one shipped out of ./drivers/misc/mei in October 2026 under the enum mei_ext_hdr_type(9) banner — mwah, go forth and read headers 💜