www.pudn.com > lwip-1.3.0.rar > ip6_addr.c

/* 
 * Copyright (c) 2001-2004 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. The name of the author may not be used to endorse or promote products 
 *    derived from this software without specific prior written permission.  
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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  
 * 
 */ 
 
#include "lwip/opt.h" 
#include "lwip/ip_addr.h" 
#include "lwip/inet.h" 
 
u8_t 
ip_addr_netcmp(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])); 
         
} 
 
u8_t 
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) 
{ 
  SMEMCPY(dest, src, 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];*/ 
} 
 
u8_t 
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); 
}