libnvme(9)                        API Manual                        libnvme(9)

NAME
       struct nvme_mi_msg_hdr - General MI message header.

SYNOPSIS
       struct nvme_mi_msg_hdr {
           __u8 type;
           __u8 nmp;
           __u8 meb;
           __u8 rsvd0;
        };


Members
       type        MCTP message type, will always be NVME_MI_MSGTYPE_NVME

       nmp         NVMe-MI message parameters (including MI message type)

       meb         Management Endpoint Buffer flag; unused for libnvme-mi
                   implementation

       rsvd0       currently reserved

Description
       Wire format shared by both request and response messages, per NVMe-MI
       section 3.1. This is used for all message types, MI and Admin.

September 2026              struct nvme_mi_msg_hdr                  libnvme(9)