libnvme(9)

✨ NAME ✨

okay so bestie, welcome to the libnvme corner of the manual 💅 this page is all about struct nvme_mi_mi_req_hdr — the MI request message header. that's it, that's the whole vibe 🎀

🌸 SYNOPSIS 🌸

here's the shape of it, no cap:

struct nvme_mi_mi_req_hdr {
    struct nvme_mi_msg_hdr hdr;
    __u8 opcode;
    __u8 rsvd0[3];
    __le32 cdw0, cdw1;
 };

🦋 Members 🦋

• hdr — the generic MI message header 🫶 it's the main character that everything else sits inside.
• opcode — the opcode (OPC) for the specific MI command ✨ like, which command are we even doing here.
• rsvd0 — reserved bytes 🙈 just vibing there, don't touch.
• cdw0 — Management Request Doubleword 0 — and its usage is command specific 💫
• cdw1 — Management Request Doubleword 1 — also command specific 💫 so yeah, both of the doublewords match.

💜 Description 💜

so this is the wire format for MI request message headers, lowkey iconic 🔥 and if you're wondering where it's defined — it's in section 5 of NVMe-MI 📖 that's the source of truth, bestie, go read it iykyk.

fr fr that's the whole struct — every member accounted for, nothing skipped, we ate and left no crumbs 🍓

and that's a wrap on this little page from the API Manual of libnvme 🌈 — this one's dated October 2026, page struct nvme_mi_mi_req_hdr, manual libnvme(9) ⭐ mwah, go build something slay 💅👑