test.c

一种操作系统源码核

//#include "adapter.h"
//#include <absacc.h>
//#include <reg51.h>
#include  "vtype.h"
//#include "protocol.h"
//#include "p_tcpip.h"
//#include "p_h323.h"
//#include "p_util.h"
//#include "ip.h"
//#include "tcp.h"
//#include "tcb.h"
#include <string.h>
#include <stdio.h>                      /* for printf */
USHORT TcpCheckSum(UCHAR iLen,PXCHAR pData)
{
  PXSHORT pTemp;
 data ULONG lTemp ;
  DCHAR i;
  pTemp=(PXSHORT)(pData+0x1a);
  lTemp=(ULONG)(iLen)+6;
  lTemp+=(ULONG)(*pTemp);
  lTemp+=(ULONG)(*(pTemp+2));
  lTemp+=(ULONG)(*(pTemp+4));
  lTemp+=(ULONG)(*(pTemp+6));//sum αIP header
  if(!iLen)
  {
  *(pData+0x22+iLen)=0;
  iLen++;
  }
  iLen>>=1;
  pTemp=(PXSHORT)(pData+0x22);
  while(i<iLen)
  {
      lTemp+=(ULONG)(*(pTemp+i*2));
     i++;
  }
  lTemp=(lTemp>>0x10)+(lTemp&0xffff);
  lTemp+=lTemp>>16;
 return ~(USHORT)(lTemp);
}

void main()
{
PXCHAR _pData;
TcpCheckSum(10,_pData);
//TcbSendPacket();
}