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NDIS_OFFLOAD

構造体

サイズx64: 112 バイト / x86: 112 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	x64	x86	説明
Header	NDIS_OBJECT_HEADER	4	+0	+0	構造体の型・リビジョン・サイズを示すNDISオブジェクトヘッダー。
Checksum	NDIS_TCP_IP_CHECKSUM_OFFLOAD	32	+4	+4	TCP/IPチェックサムオフロード能力。
LsoV1	NDIS_TCP_LARGE_SEND_OFFLOAD_V1	16	+36	+36	LSOバージョン1のオフロード能力。
IPsecV1	NDIS_IPSEC_OFFLOAD_V1	28	+52	+52	IPsecバージョン1のオフロード能力。
LsoV2	NDIS_TCP_LARGE_SEND_OFFLOAD_V2	28	+80	+80	LSOバージョン2のオフロード能力。
Flags	DWORD	4	+108	+108	オフロード能力に関するフラグ。

各言語での定義

#include <windows.h>

// NDIS_OBJECT_HEADER  (x64 4 / x86 4 バイト)
typedef struct NDIS_OBJECT_HEADER {
    BYTE Type;
    BYTE Revision;
    WORD Size;
} NDIS_OBJECT_HEADER;

// NDIS_TCP_IP_CHECKSUM_OFFLOAD  (x64 32 / x86 32 バイト)
typedef struct NDIS_TCP_IP_CHECKSUM_OFFLOAD {
    _IPv4Transmit_e__Struct IPv4Transmit;
    _IPv4Receive_e__Struct IPv4Receive;
    _IPv6Transmit_e__Struct IPv6Transmit;
    _IPv6Receive_e__Struct IPv6Receive;
} NDIS_TCP_IP_CHECKSUM_OFFLOAD;

// NDIS_TCP_LARGE_SEND_OFFLOAD_V1  (x64 16 / x86 16 バイト)
typedef struct NDIS_TCP_LARGE_SEND_OFFLOAD_V1 {
    _IPv4_e__Struct IPv4;
} NDIS_TCP_LARGE_SEND_OFFLOAD_V1;

// NDIS_IPSEC_OFFLOAD_V1  (x64 28 / x86 28 バイト)
typedef struct NDIS_IPSEC_OFFLOAD_V1 {
    _Supported_e__Struct Supported;
    _IPv4AH_e__Struct IPv4AH;
    _IPv4ESP_e__Struct IPv4ESP;
} NDIS_IPSEC_OFFLOAD_V1;

// NDIS_TCP_LARGE_SEND_OFFLOAD_V2  (x64 28 / x86 28 バイト)
typedef struct NDIS_TCP_LARGE_SEND_OFFLOAD_V2 {
    _IPv4_e__Struct IPv4;
    _IPv6_e__Struct IPv6;
} NDIS_TCP_LARGE_SEND_OFFLOAD_V2;

// NDIS_OFFLOAD  (x64 112 / x86 112 バイト)
typedef struct NDIS_OFFLOAD {
    NDIS_OBJECT_HEADER Header;
    NDIS_TCP_IP_CHECKSUM_OFFLOAD Checksum;
    NDIS_TCP_LARGE_SEND_OFFLOAD_V1 LsoV1;
    NDIS_IPSEC_OFFLOAD_V1 IPsecV1;
    NDIS_TCP_LARGE_SEND_OFFLOAD_V2 LsoV2;
    DWORD Flags;
} NDIS_OFFLOAD;

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct NDIS_OBJECT_HEADER
{
    public byte Type;
    public byte Revision;
    public ushort Size;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct NDIS_TCP_IP_CHECKSUM_OFFLOAD
{
    public _IPv4Transmit_e__Struct IPv4Transmit;
    public _IPv4Receive_e__Struct IPv4Receive;
    public _IPv6Transmit_e__Struct IPv6Transmit;
    public _IPv6Receive_e__Struct IPv6Receive;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct NDIS_TCP_LARGE_SEND_OFFLOAD_V1
{
    public _IPv4_e__Struct IPv4;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct NDIS_IPSEC_OFFLOAD_V1
{
    public _Supported_e__Struct Supported;
    public _IPv4AH_e__Struct IPv4AH;
    public _IPv4ESP_e__Struct IPv4ESP;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct NDIS_TCP_LARGE_SEND_OFFLOAD_V2
{
    public _IPv4_e__Struct IPv4;
    public _IPv6_e__Struct IPv6;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct NDIS_OFFLOAD
{
    public NDIS_OBJECT_HEADER Header;
    public NDIS_TCP_IP_CHECKSUM_OFFLOAD Checksum;
    public NDIS_TCP_LARGE_SEND_OFFLOAD_V1 LsoV1;
    public NDIS_IPSEC_OFFLOAD_V1 IPsecV1;
    public NDIS_TCP_LARGE_SEND_OFFLOAD_V2 LsoV2;
    public uint Flags;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure NDIS_OBJECT_HEADER
    Public Type As Byte
    Public Revision As Byte
    Public Size As UShort
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure NDIS_TCP_IP_CHECKSUM_OFFLOAD
    Public IPv4Transmit As _IPv4Transmit_e__Struct
    Public IPv4Receive As _IPv4Receive_e__Struct
    Public IPv6Transmit As _IPv6Transmit_e__Struct
    Public IPv6Receive As _IPv6Receive_e__Struct
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure NDIS_TCP_LARGE_SEND_OFFLOAD_V1
    Public IPv4 As _IPv4_e__Struct
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure NDIS_IPSEC_OFFLOAD_V1
    Public Supported As _Supported_e__Struct
    Public IPv4AH As _IPv4AH_e__Struct
    Public IPv4ESP As _IPv4ESP_e__Struct
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure NDIS_TCP_LARGE_SEND_OFFLOAD_V2
    Public IPv4 As _IPv4_e__Struct
    Public IPv6 As _IPv6_e__Struct
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure NDIS_OFFLOAD
    Public Header As NDIS_OBJECT_HEADER
    Public Checksum As NDIS_TCP_IP_CHECKSUM_OFFLOAD
    Public LsoV1 As NDIS_TCP_LARGE_SEND_OFFLOAD_V1
    Public IPsecV1 As NDIS_IPSEC_OFFLOAD_V1
    Public LsoV2 As NDIS_TCP_LARGE_SEND_OFFLOAD_V2
    Public Flags As UInteger
End Structure

import ctypes
from ctypes import wintypes

class NDIS_OBJECT_HEADER(ctypes.Structure):
    _fields_ = [
        ("Type", ctypes.c_ubyte),
        ("Revision", ctypes.c_ubyte),
        ("Size", ctypes.c_ushort),
    ]

class NDIS_TCP_IP_CHECKSUM_OFFLOAD(ctypes.Structure):
    _fields_ = [
        ("IPv4Transmit", _IPv4Transmit_e__Struct),
        ("IPv4Receive", _IPv4Receive_e__Struct),
        ("IPv6Transmit", _IPv6Transmit_e__Struct),
        ("IPv6Receive", _IPv6Receive_e__Struct),
    ]

class NDIS_TCP_LARGE_SEND_OFFLOAD_V1(ctypes.Structure):
    _fields_ = [
        ("IPv4", _IPv4_e__Struct),
    ]

class NDIS_IPSEC_OFFLOAD_V1(ctypes.Structure):
    _fields_ = [
        ("Supported", _Supported_e__Struct),
        ("IPv4AH", _IPv4AH_e__Struct),
        ("IPv4ESP", _IPv4ESP_e__Struct),
    ]

class NDIS_TCP_LARGE_SEND_OFFLOAD_V2(ctypes.Structure):
    _fields_ = [
        ("IPv4", _IPv4_e__Struct),
        ("IPv6", _IPv6_e__Struct),
    ]

class NDIS_OFFLOAD(ctypes.Structure):
    _fields_ = [
        ("Header", NDIS_OBJECT_HEADER),
        ("Checksum", NDIS_TCP_IP_CHECKSUM_OFFLOAD),
        ("LsoV1", NDIS_TCP_LARGE_SEND_OFFLOAD_V1),
        ("IPsecV1", NDIS_IPSEC_OFFLOAD_V1),
        ("LsoV2", NDIS_TCP_LARGE_SEND_OFFLOAD_V2),
        ("Flags", wintypes.DWORD),
    ]

#[repr(C)]
pub struct NDIS_OBJECT_HEADER {
    pub Type: u8,
    pub Revision: u8,
    pub Size: u16,
}

#[repr(C)]
pub struct NDIS_TCP_IP_CHECKSUM_OFFLOAD {
    pub IPv4Transmit: _IPv4Transmit_e__Struct,
    pub IPv4Receive: _IPv4Receive_e__Struct,
    pub IPv6Transmit: _IPv6Transmit_e__Struct,
    pub IPv6Receive: _IPv6Receive_e__Struct,
}

#[repr(C)]
pub struct NDIS_TCP_LARGE_SEND_OFFLOAD_V1 {
    pub IPv4: _IPv4_e__Struct,
}

#[repr(C)]
pub struct NDIS_IPSEC_OFFLOAD_V1 {
    pub Supported: _Supported_e__Struct,
    pub IPv4AH: _IPv4AH_e__Struct,
    pub IPv4ESP: _IPv4ESP_e__Struct,
}

#[repr(C)]
pub struct NDIS_TCP_LARGE_SEND_OFFLOAD_V2 {
    pub IPv4: _IPv4_e__Struct,
    pub IPv6: _IPv6_e__Struct,
}

#[repr(C)]
pub struct NDIS_OFFLOAD {
    pub Header: NDIS_OBJECT_HEADER,
    pub Checksum: NDIS_TCP_IP_CHECKSUM_OFFLOAD,
    pub LsoV1: NDIS_TCP_LARGE_SEND_OFFLOAD_V1,
    pub IPsecV1: NDIS_IPSEC_OFFLOAD_V1,
    pub LsoV2: NDIS_TCP_LARGE_SEND_OFFLOAD_V2,
    pub Flags: u32,
}

import "golang.org/x/sys/windows"

type NDIS_OBJECT_HEADER struct {
	Type byte
	Revision byte
	Size uint16
}

type NDIS_TCP_IP_CHECKSUM_OFFLOAD struct {
	IPv4Transmit _IPv4Transmit_e__Struct
	IPv4Receive _IPv4Receive_e__Struct
	IPv6Transmit _IPv6Transmit_e__Struct
	IPv6Receive _IPv6Receive_e__Struct
}

type NDIS_TCP_LARGE_SEND_OFFLOAD_V1 struct {
	IPv4 _IPv4_e__Struct
}

type NDIS_IPSEC_OFFLOAD_V1 struct {
	Supported _Supported_e__Struct
	IPv4AH _IPv4AH_e__Struct
	IPv4ESP _IPv4ESP_e__Struct
}

type NDIS_TCP_LARGE_SEND_OFFLOAD_V2 struct {
	IPv4 _IPv4_e__Struct
	IPv6 _IPv6_e__Struct
}

type NDIS_OFFLOAD struct {
	Header NDIS_OBJECT_HEADER
	Checksum NDIS_TCP_IP_CHECKSUM_OFFLOAD
	LsoV1 NDIS_TCP_LARGE_SEND_OFFLOAD_V1
	IPsecV1 NDIS_IPSEC_OFFLOAD_V1
	LsoV2 NDIS_TCP_LARGE_SEND_OFFLOAD_V2
	Flags uint32
}

type
  NDIS_OBJECT_HEADER = record
    Type: Byte;
    Revision: Byte;
    Size: Word;
  end;

  NDIS_TCP_IP_CHECKSUM_OFFLOAD = record
    IPv4Transmit: _IPv4Transmit_e__Struct;
    IPv4Receive: _IPv4Receive_e__Struct;
    IPv6Transmit: _IPv6Transmit_e__Struct;
    IPv6Receive: _IPv6Receive_e__Struct;
  end;

  NDIS_TCP_LARGE_SEND_OFFLOAD_V1 = record
    IPv4: _IPv4_e__Struct;
  end;

  NDIS_IPSEC_OFFLOAD_V1 = record
    Supported: _Supported_e__Struct;
    IPv4AH: _IPv4AH_e__Struct;
    IPv4ESP: _IPv4ESP_e__Struct;
  end;

  NDIS_TCP_LARGE_SEND_OFFLOAD_V2 = record
    IPv4: _IPv4_e__Struct;
    IPv6: _IPv6_e__Struct;
  end;

  NDIS_OFFLOAD = record
    Header: NDIS_OBJECT_HEADER;
    Checksum: NDIS_TCP_IP_CHECKSUM_OFFLOAD;
    LsoV1: NDIS_TCP_LARGE_SEND_OFFLOAD_V1;
    IPsecV1: NDIS_IPSEC_OFFLOAD_V1;
    LsoV2: NDIS_TCP_LARGE_SEND_OFFLOAD_V2;
    Flags: DWORD;
  end;

const NDIS_OBJECT_HEADER = extern struct {
    Type: u8,
    Revision: u8,
    Size: u16,
};

const NDIS_TCP_IP_CHECKSUM_OFFLOAD = extern struct {
    IPv4Transmit: _IPv4Transmit_e__Struct,
    IPv4Receive: _IPv4Receive_e__Struct,
    IPv6Transmit: _IPv6Transmit_e__Struct,
    IPv6Receive: _IPv6Receive_e__Struct,
};

const NDIS_TCP_LARGE_SEND_OFFLOAD_V1 = extern struct {
    IPv4: _IPv4_e__Struct,
};

const NDIS_IPSEC_OFFLOAD_V1 = extern struct {
    Supported: _Supported_e__Struct,
    IPv4AH: _IPv4AH_e__Struct,
    IPv4ESP: _IPv4ESP_e__Struct,
};

const NDIS_TCP_LARGE_SEND_OFFLOAD_V2 = extern struct {
    IPv4: _IPv4_e__Struct,
    IPv6: _IPv6_e__Struct,
};

const NDIS_OFFLOAD = extern struct {
    Header: NDIS_OBJECT_HEADER,
    Checksum: NDIS_TCP_IP_CHECKSUM_OFFLOAD,
    LsoV1: NDIS_TCP_LARGE_SEND_OFFLOAD_V1,
    IPsecV1: NDIS_IPSEC_OFFLOAD_V1,
    LsoV2: NDIS_TCP_LARGE_SEND_OFFLOAD_V2,
    Flags: u32,
};

type
  NDIS_OBJECT_HEADER {.bycopy.} = object
    Type: uint8
    Revision: uint8
    Size: uint16

  NDIS_TCP_IP_CHECKSUM_OFFLOAD {.bycopy.} = object
    IPv4Transmit: _IPv4Transmit_e__Struct
    IPv4Receive: _IPv4Receive_e__Struct
    IPv6Transmit: _IPv6Transmit_e__Struct
    IPv6Receive: _IPv6Receive_e__Struct

  NDIS_TCP_LARGE_SEND_OFFLOAD_V1 {.bycopy.} = object
    IPv4: _IPv4_e__Struct

  NDIS_IPSEC_OFFLOAD_V1 {.bycopy.} = object
    Supported: _Supported_e__Struct
    IPv4AH: _IPv4AH_e__Struct
    IPv4ESP: _IPv4ESP_e__Struct

  NDIS_TCP_LARGE_SEND_OFFLOAD_V2 {.bycopy.} = object
    IPv4: _IPv4_e__Struct
    IPv6: _IPv6_e__Struct

  NDIS_OFFLOAD {.bycopy.} = object
    Header: NDIS_OBJECT_HEADER
    Checksum: NDIS_TCP_IP_CHECKSUM_OFFLOAD
    LsoV1: NDIS_TCP_LARGE_SEND_OFFLOAD_V1
    IPsecV1: NDIS_IPSEC_OFFLOAD_V1
    LsoV2: NDIS_TCP_LARGE_SEND_OFFLOAD_V2
    Flags: uint32

struct NDIS_OBJECT_HEADER
{
    ubyte Type;
    ubyte Revision;
    ushort Size;
}

struct NDIS_TCP_IP_CHECKSUM_OFFLOAD
{
    _IPv4Transmit_e__Struct IPv4Transmit;
    _IPv4Receive_e__Struct IPv4Receive;
    _IPv6Transmit_e__Struct IPv6Transmit;
    _IPv6Receive_e__Struct IPv6Receive;
}

struct NDIS_TCP_LARGE_SEND_OFFLOAD_V1
{
    _IPv4_e__Struct IPv4;
}

struct NDIS_IPSEC_OFFLOAD_V1
{
    _Supported_e__Struct Supported;
    _IPv4AH_e__Struct IPv4AH;
    _IPv4ESP_e__Struct IPv4ESP;
}

struct NDIS_TCP_LARGE_SEND_OFFLOAD_V2
{
    _IPv4_e__Struct IPv4;
    _IPv6_e__Struct IPv6;
}

struct NDIS_OFFLOAD
{
    NDIS_OBJECT_HEADER Header;
    NDIS_TCP_IP_CHECKSUM_OFFLOAD Checksum;
    NDIS_TCP_LARGE_SEND_OFFLOAD_V1 LsoV1;
    NDIS_IPSEC_OFFLOAD_V1 IPsecV1;
    NDIS_TCP_LARGE_SEND_OFFLOAD_V2 LsoV2;
    uint Flags;
}

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)
; NDIS_OFFLOAD サイズ: 112 バイト(x64)
dim st, 28    ; 4byte整数×28(構造体サイズ 112 / 4 切り上げ)
; Header : NDIS_OBJECT_HEADER (+0, 4byte)  varptr(st)+0 を基点に操作(4byte:入れ子/配列)
; Checksum : NDIS_TCP_IP_CHECKSUM_OFFLOAD (+4, 32byte)  varptr(st)+4 を基点に操作(32byte:入れ子/配列)
; LsoV1 : NDIS_TCP_LARGE_SEND_OFFLOAD_V1 (+36, 16byte)  varptr(st)+36 を基点に操作(16byte:入れ子/配列)
; IPsecV1 : NDIS_IPSEC_OFFLOAD_V1 (+52, 28byte)  varptr(st)+52 を基点に操作(28byte:入れ子/配列)
; LsoV2 : NDIS_TCP_LARGE_SEND_OFFLOAD_V2 (+80, 28byte)  varptr(st)+80 を基点に操作(28byte:入れ子/配列)
; Flags : DWORD (+108, 4byte)  st.27 = 値  /  値 = st.27   (lpoke/lpeek も可)
; ※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 NDIS_OBJECT_HEADER
    #field byte Type
    #field byte Revision
    #field short Size
#endstruct

#defstruct global NDIS_TCP_IP_CHECKSUM_OFFLOAD
    #field _IPv4Transmit_e__Struct IPv4Transmit
    #field _IPv4Receive_e__Struct IPv4Receive
    #field _IPv6Transmit_e__Struct IPv6Transmit
    #field _IPv6Receive_e__Struct IPv6Receive
#endstruct

#defstruct global NDIS_TCP_LARGE_SEND_OFFLOAD_V1
    #field _IPv4_e__Struct IPv4
#endstruct

#defstruct global NDIS_IPSEC_OFFLOAD_V1
    #field _Supported_e__Struct Supported
    #field _IPv4AH_e__Struct IPv4AH
    #field _IPv4ESP_e__Struct IPv4ESP
#endstruct

#defstruct global NDIS_TCP_LARGE_SEND_OFFLOAD_V2
    #field _IPv4_e__Struct IPv4
    #field _IPv6_e__Struct IPv6
#endstruct

#defstruct global NDIS_OFFLOAD
    #field NDIS_OBJECT_HEADER Header
    #field NDIS_TCP_IP_CHECKSUM_OFFLOAD Checksum
    #field NDIS_TCP_LARGE_SEND_OFFLOAD_V1 LsoV1
    #field NDIS_IPSEC_OFFLOAD_V1 IPsecV1
    #field NDIS_TCP_LARGE_SEND_OFFLOAD_V2 LsoV2
    #field int Flags
#endstruct

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

NDIS_OFFLOAD

フィールド

各言語での定義

HSP用 定義

HSP用定義