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NDIS_TCP_IP_CHECKSUM_OFFLOAD

構造体
サイズx64: 32 バイト / x86: 32 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

フィールドサイズx64x86説明
IPv4Transmit_IPv4Transmit_e__Struct8+0+0IPv4送信時のチェックサムオフロード能力。
IPv4Receive_IPv4Receive_e__Struct8+8+8IPv4受信時のチェックサムオフロード能力。
IPv6Transmit_IPv6Transmit_e__Struct8+16+16IPv6送信時のチェックサムオフロード能力。
IPv6Receive_IPv6Receive_e__Struct8+24+24IPv6受信時のチェックサムオフロード能力。

構造体: _IPv4Transmit_e__Struct x64 8B / x86 8B

フィールドサイズx64x86
EncapsulationDWORD4+0+0
_bitfieldDWORD4+4+4

構造体: _IPv4Receive_e__Struct x64 8B / x86 8B

フィールドサイズx64x86
EncapsulationDWORD4+0+0
_bitfieldDWORD4+4+4

構造体: _IPv6Transmit_e__Struct x64 8B / x86 8B

フィールドサイズx64x86
EncapsulationDWORD4+0+0
_bitfieldDWORD4+4+4

構造体: _IPv6Receive_e__Struct x64 8B / x86 8B

フィールドサイズx64x86
EncapsulationDWORD4+0+0
_bitfieldDWORD4+4+4

各言語での定義

#include <windows.h>

// 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;
using System;
using System.Runtime.InteropServices;

[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;
}
Imports System.Runtime.InteropServices

<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
import ctypes
from ctypes import wintypes

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),
    ]
#[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,
}
import "golang.org/x/sys/windows"

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_IP_CHECKSUM_OFFLOAD = record
    IPv4Transmit: _IPv4Transmit_e__Struct;
    IPv4Receive: _IPv4Receive_e__Struct;
    IPv6Transmit: _IPv6Transmit_e__Struct;
    IPv6Receive: _IPv6Receive_e__Struct;
  end;
const NDIS_TCP_IP_CHECKSUM_OFFLOAD = extern struct {
    IPv4Transmit: _IPv4Transmit_e__Struct,
    IPv4Receive: _IPv4Receive_e__Struct,
    IPv6Transmit: _IPv6Transmit_e__Struct,
    IPv6Receive: _IPv6Receive_e__Struct,
};
type
  NDIS_TCP_IP_CHECKSUM_OFFLOAD {.bycopy.} = object
    IPv4Transmit: _IPv4Transmit_e__Struct
    IPv4Receive: _IPv4Receive_e__Struct
    IPv6Transmit: _IPv6Transmit_e__Struct
    IPv6Receive: _IPv6Receive_e__Struct
struct NDIS_TCP_IP_CHECKSUM_OFFLOAD
{
    _IPv4Transmit_e__Struct IPv4Transmit;
    _IPv4Receive_e__Struct IPv4Receive;
    _IPv6Transmit_e__Struct IPv6Transmit;
    _IPv6Receive_e__Struct IPv6Receive;
}

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_TCP_IP_CHECKSUM_OFFLOAD サイズ: 32 バイト(x64)
dim st, 8    ; 4byte整数×8(構造体サイズ 32 / 4 切り上げ)
; IPv4Transmit : _IPv4Transmit_e__Struct (+0, 8byte)  varptr(st)+0 を基点に操作(8byte:入れ子/配列)
; IPv4Receive : _IPv4Receive_e__Struct (+8, 8byte)  varptr(st)+8 を基点に操作(8byte:入れ子/配列)
; IPv6Transmit : _IPv6Transmit_e__Struct (+16, 8byte)  varptr(st)+16 を基点に操作(8byte:入れ子/配列)
; IPv6Receive : _IPv6Receive_e__Struct (+24, 8byte)  varptr(st)+24 を基点に操作(8byte: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。
#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

stdim st, NDIS_TCP_IP_CHECKSUM_OFFLOAD        ; NSTRUCT 変数を確保