ip6_addr.c

嵌入式TCpip协议栈 开源代码

/*
 * Copyright (c) 2001, Swedish Institute of Computer Science.
 * All rights reserved. 
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met: 
 * 1. Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer. 
 * 2. Redistributions in binary form must reproduce the above copyright 
 *    notice, this list of conditions and the following disclaimer in the 
 *    documentation and/or other materials provided with the distribution. 
 * 3. Neither the name of the Institute nor the names of its contributors 
 *    may be used to endorse or promote products derived from this software 
 *    without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 * SUCH DAMAGE. 
 *
 * This file is part of the lwIP TCP/IP stack.
 * 
 * Author: Adam Dunkels <[e-mail]>
 *
 * $Id: ip6_addr.c,v 1.1 2001/12/12 10:00:59 adam Exp $
 */

#include "lwip/debug.h"
#include "lwip/ip_addr.h"
#include "lwip/inet.h"

/*-----------------------------------------------------------------------------------*/
int
ip_addr_maskcmp(struct ip_addr *addr1, struct ip_addr *addr2,
                struct ip_addr *mask)
{
  return((addr1->addr[0] & mask->addr[0]) == (addr2->addr[0] & mask->addr[0]) &&
         (addr1->addr[1] & mask->addr[1]) == (addr2->addr[1] & mask->addr[1]) &&
         (addr1->addr[2] & mask->addr[2]) == (addr2->addr[2] & mask->addr[2]) &&
         (addr1->addr[3] & mask->addr[3]) == (addr2->addr[3] & mask->addr[3]));
        
}
/*-----------------------------------------------------------------------------------*/
int
ip_addr_cmp(struct ip_addr *addr1, struct ip_addr *addr2)
{
  return(addr1->addr[0] == addr2->addr[0] &&
         addr1->addr[1] == addr2->addr[1] &&
         addr1->addr[2] == addr2->addr[2] &&
         addr1->addr[3] == addr2->addr[3]);
}
/*-----------------------------------------------------------------------------------*/
void
ip_addr_set(struct ip_addr *dest, struct ip_addr *src)
{
  bcopy(src, dest, sizeof(struct ip_addr));
  /*  dest->addr[0] = src->addr[0];
  dest->addr[1] = src->addr[1];
  dest->addr[2] = src->addr[2];
  dest->addr[3] = src->addr[3];*/
}
/*-----------------------------------------------------------------------------------*/
int
ip_addr_isany(struct ip_addr *addr)
{
  if(addr == NULL) return 1;
  return((addr->addr[0] | addr->addr[1] | addr->addr[2] | addr->addr[3]) == 0);
}

/*-----------------------------------------------------------------------------------*/
/*#if IP_DEBUG*/
void
ip_addr_debug_print(struct ip_addr *addr)
{
  printf("%lx:%lx:%lx:%lx:%lx:%lx:%lx:%lx",
         ntohl(addr->addr[0]) >> 16 & 0xffff,
         ntohl(addr->addr[0]) & 0xffff,
         ntohl(addr->addr[1]) >> 16 & 0xffff,
         ntohl(addr->addr[1]) & 0xffff,
         ntohl(addr->addr[2]) >> 16 & 0xffff,
         ntohl(addr->addr[2]) & 0xffff,
         ntohl(addr->addr[3]) >> 16 & 0xffff,
         ntohl(addr->addr[3]) & 0xffff);
}
/*#endif*/ /* IP_DEBUG */
/*-----------------------------------------------------------------------------------*/