nvme_mi_admin_req_hdr - Man Page

struct nvme_mi_admin_req_hdr {
   struct nvme_mi_msg_hdr hdr;
   __u8 opcode;
   __u8 flags;
   __le16 ctrl_id;
   __le32 cdw1, cdw2, cdw3, cdw4, cdw5;
   __le32 doff;
   __le32 dlen;
   __le32 rsvd0, rsvd1;
   __le32 cdw10, cdw11, cdw12, cdw13, cdw14, cdw15;
};

hdr

Generic MI message header

opcode

Admin command opcode (using enum nvme_admin_opcode)

flags

Command Flags, indicating dlen and doff validity; Only defined in NVMe-MI version 1.1, no fields defined in 1.2 (where the dlen/doff are always considered valid).

ctrl_id

Controller ID target of command

cdw1

Submission Queue Entry doubleword 1

cdw2

Submission Queue Entry doubleword 2

cdw3

Submission Queue Entry doubleword 3

cdw4

Submission Queue Entry doubleword 4

cdw5

Submission Queue Entry doubleword 5

doff

Offset of data to return from command

dlen

Length of sent/returned data

rsvd0

Reserved

rsvd1

Reserved

cdw10

Submission Queue Entry doubleword 10

cdw11

Submission Queue Entry doubleword 11

cdw12

Submission Queue Entry doubleword 12

cdw13

Submission Queue Entry doubleword 13

cdw14

Submission Queue Entry doubleword 14

cdw15

Submission Queue Entry doubleword 15

Wire format for Admin command message headers, defined in section 6 of NVMe-MI.