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NVMEOF_DISCONNECT_COMMAND

構造体
サイズx64: 72 バイト / x86: 72 バイト

サイズ=各フィールドのバイト数(x64/x86 で異なる場合は x64/x86 と併記)。x64/x86 列=フィールドのバイトオフセット(HSPで dupptr / lpoke / wpoke 等に使用)。

フィールド

フィールド型サイズx64x86説明
OPCBYTE1+0+0Fabricsコマンドを示すオペコードを表す8ビット値である。
Reserved0BYTE1+1+1将来の拡張用に予約された未使用バイトである。
CIDWORD2+2+2コマンド識別子(Command Identifier)を表す16ビット値である。
FCTYPEBYTE1+4+4Disconnectコマンドを示すFabricsコマンド種別を表す8ビット値である。
Reserved1BYTE19+5+5将来の拡張用に予約された未使用バイト列である。
SGL1NVME_SGL_DATABLOCK_DESC24+24+24Disconnect用データを指すSGLデータブロック記述子である。
RECFMTWORD2+48+48レコードフォーマット(Record Format)を表す16ビット値である。
Reserved2BYTE22+50+50将来の拡張用に予約された未使用バイト列である。

各言語での定義

#include <windows.h>

// NVME_SGL_DATABLOCK_DESC  (x64 24 / x86 24 バイト)
typedef struct NVME_SGL_DATABLOCK_DESC {
    ULONGLONG Address;
    DWORD Length;
    BYTE Reserved0[3];
    _Identifier_e__Union Identifier;
} NVME_SGL_DATABLOCK_DESC;

// NVMEOF_DISCONNECT_COMMAND  (x64 72 / x86 72 バイト)
typedef struct NVMEOF_DISCONNECT_COMMAND {
    BYTE OPC;
    BYTE Reserved0;
    WORD CID;
    BYTE FCTYPE;
    BYTE Reserved1[19];
    NVME_SGL_DATABLOCK_DESC SGL1;
    WORD RECFMT;
    BYTE Reserved2[22];
} NVMEOF_DISCONNECT_COMMAND;
using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct NVME_SGL_DATABLOCK_DESC
{
    public ulong Address;
    public uint Length;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)] public byte[] Reserved0;
    public _Identifier_e__Union Identifier;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct NVMEOF_DISCONNECT_COMMAND
{
    public byte OPC;
    public byte Reserved0;
    public ushort CID;
    public byte FCTYPE;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 19)] public byte[] Reserved1;
    public NVME_SGL_DATABLOCK_DESC SGL1;
    public ushort RECFMT;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 22)] public byte[] Reserved2;
}
Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure NVME_SGL_DATABLOCK_DESC
    Public Address As ULong
    Public Length As UInteger
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=3)> Public Reserved0() As Byte
    Public Identifier As _Identifier_e__Union
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure NVMEOF_DISCONNECT_COMMAND
    Public OPC As Byte
    Public Reserved0 As Byte
    Public CID As UShort
    Public FCTYPE As Byte
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=19)> Public Reserved1() As Byte
    Public SGL1 As NVME_SGL_DATABLOCK_DESC
    Public RECFMT As UShort
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=22)> Public Reserved2() As Byte
End Structure
import ctypes
from ctypes import wintypes

class NVME_SGL_DATABLOCK_DESC(ctypes.Structure):
    _fields_ = [
        ("Address", ctypes.c_ulonglong),
        ("Length", wintypes.DWORD),
        ("Reserved0", ctypes.c_ubyte * 3),
        ("Identifier", _Identifier_e__Union),
    ]

class NVMEOF_DISCONNECT_COMMAND(ctypes.Structure):
    _fields_ = [
        ("OPC", ctypes.c_ubyte),
        ("Reserved0", ctypes.c_ubyte),
        ("CID", ctypes.c_ushort),
        ("FCTYPE", ctypes.c_ubyte),
        ("Reserved1", ctypes.c_ubyte * 19),
        ("SGL1", NVME_SGL_DATABLOCK_DESC),
        ("RECFMT", ctypes.c_ushort),
        ("Reserved2", ctypes.c_ubyte * 22),
    ]
#[repr(C)]
pub struct NVME_SGL_DATABLOCK_DESC {
    pub Address: u64,
    pub Length: u32,
    pub Reserved0: [u8; 3],
    pub Identifier: _Identifier_e__Union,
}

#[repr(C)]
pub struct NVMEOF_DISCONNECT_COMMAND {
    pub OPC: u8,
    pub Reserved0: u8,
    pub CID: u16,
    pub FCTYPE: u8,
    pub Reserved1: [u8; 19],
    pub SGL1: NVME_SGL_DATABLOCK_DESC,
    pub RECFMT: u16,
    pub Reserved2: [u8; 22],
}
import "golang.org/x/sys/windows"

type NVME_SGL_DATABLOCK_DESC struct {
	Address uint64
	Length uint32
	Reserved0 [3]byte
	Identifier _Identifier_e__Union
}

type NVMEOF_DISCONNECT_COMMAND struct {
	OPC byte
	Reserved0 byte
	CID uint16
	FCTYPE byte
	Reserved1 [19]byte
	SGL1 NVME_SGL_DATABLOCK_DESC
	RECFMT uint16
	Reserved2 [22]byte
}
type
  NVME_SGL_DATABLOCK_DESC = record
    Address: UInt64;
    Length: DWORD;
    Reserved0: array[0..2] of Byte;
    Identifier: _Identifier_e__Union;
  end;

  NVMEOF_DISCONNECT_COMMAND = record
    OPC: Byte;
    Reserved0: Byte;
    CID: Word;
    FCTYPE: Byte;
    Reserved1: array[0..18] of Byte;
    SGL1: NVME_SGL_DATABLOCK_DESC;
    RECFMT: Word;
    Reserved2: array[0..21] of Byte;
  end;
const NVME_SGL_DATABLOCK_DESC = extern struct {
    Address: u64,
    Length: u32,
    Reserved0: [3]u8,
    Identifier: _Identifier_e__Union,
};

const NVMEOF_DISCONNECT_COMMAND = extern struct {
    OPC: u8,
    Reserved0: u8,
    CID: u16,
    FCTYPE: u8,
    Reserved1: [19]u8,
    SGL1: NVME_SGL_DATABLOCK_DESC,
    RECFMT: u16,
    Reserved2: [22]u8,
};
type
  NVME_SGL_DATABLOCK_DESC {.bycopy.} = object
    Address: uint64
    Length: uint32
    Reserved0: array[3, uint8]
    Identifier: _Identifier_e__Union

  NVMEOF_DISCONNECT_COMMAND {.bycopy.} = object
    OPC: uint8
    Reserved0: uint8
    CID: uint16
    FCTYPE: uint8
    Reserved1: array[19, uint8]
    SGL1: NVME_SGL_DATABLOCK_DESC
    RECFMT: uint16
    Reserved2: array[22, uint8]
struct NVME_SGL_DATABLOCK_DESC
{
    ulong Address;
    uint Length;
    ubyte[3] Reserved0;
    _Identifier_e__Union Identifier;
}

struct NVMEOF_DISCONNECT_COMMAND
{
    ubyte OPC;
    ubyte Reserved0;
    ushort CID;
    ubyte FCTYPE;
    ubyte[19] Reserved1;
    NVME_SGL_DATABLOCK_DESC SGL1;
    ushort RECFMT;
    ubyte[22] Reserved2;
}

HSP用 定義

HSP3.7/3.8 は構造体機能が無いため4byte整数配列(dim)+peek/poke で操作(32/64bitでサイズ・位置が異なる場合はタブで分割)。IronHSP は NSTRUCT(#defstruct/stdim/->)で32/64bit共通。

; HSP3.7/3.8 は構造体機能が無いため、4byte整数の配列変数で操作します。(x64 レイアウト)
; NVMEOF_DISCONNECT_COMMAND サイズ: 72 バイト(x64)
dim st, 18    ; 4byte整数×18(構造体サイズ 72 / 4 切り上げ)
; OPC : BYTE (+0, 1byte)  poke st,0,値  /  値 = peek(st,0)
; Reserved0 : BYTE (+1, 1byte)  poke st,1,値  /  値 = peek(st,1)
; CID : WORD (+2, 2byte)  wpoke st,2,値  /  値 = wpeek(st,2)
; FCTYPE : BYTE (+4, 1byte)  poke st,4,値  /  値 = peek(st,4)
; Reserved1 : BYTE (+5, 19byte)  varptr(st)+5 を基点に操作(19byte:入れ子/配列)
; SGL1 : NVME_SGL_DATABLOCK_DESC (+24, 24byte)  varptr(st)+24 を基点に操作(24byte:入れ子/配列)
; RECFMT : WORD (+48, 2byte)  wpoke st,48,値  /  値 = wpeek(st,48)
; Reserved2 : BYTE (+50, 22byte)  varptr(st)+50 を基点に操作(22byte:入れ子/配列)
; ※4byte境界の整数は添字 st.N(N=オフセット/4)で読み書き可。それ以外は peek/poke 系を使用。
; IronHSP は NSTRUCT(構造体)をサポート。32bit/64bit どちらでも同じコードで動作します。
; ※GUID・入れ子構造体はデフォルト型でないため、依存する #defstruct を先に定義(下記に同梱)。
#defstruct global NVME_SGL_DATABLOCK_DESC
    #field int64 Address
    #field int Length
    #field byte Reserved0 3
    #field byte Identifier 8
#endstruct

#defstruct global NVMEOF_DISCONNECT_COMMAND
    #field byte OPC
    #field byte Reserved0
    #field short CID
    #field byte FCTYPE
    #field byte Reserved1 19
    #field NVME_SGL_DATABLOCK_DESC SGL1
    #field short RECFMT
    #field byte Reserved2 22
#endstruct

stdim st, NVMEOF_DISCONNECT_COMMAND        ; NSTRUCT 変数を確保
st->OPC = 100
mes "OPC=" + st->OPC