libnvme(9) API Manual libnvme(9)

# [NAME](#NAME)

struct nvme\_mi\_control\_req - The Control Primitive request.

# [SYNOPSIS](#SYNOPSIS)

struct nvme\_mi\_control\_req {  
**struct nvme\_mi\_msg\_hdr hdr;**  
**\_\_u8 opcode;**  
**\_\_u8 tag;**  
**\_\_le16 cpsp;**  
};

# [Members](#Members)

[hdr](#hdr)

Generic MI message header

[opcode](#opcode)

Control Primitive Opcodes (using *enum nvme\_mi\_control\_opcode*)

[tag](#tag)

flag - Opaque value passed from request to response

[cpsp](#cpsp)

Control Primitive Specific Parameter

struct nvme\_mi\_control\_req September 2026

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Document: nvme_mi_control_req-libnvme3(2) from nvme-cli 3.1-r0 (Chainguard OS)
Source: https://github.com/linux-nvme/nvme-cli