ip_addr.c

ucos移植到44b0

/*
 * 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 <[e-mail]>
 *
 */

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

/* used by IP_ADDR_ANY and IP_ADDR_BROADCAST in ip_addr.h */
const struct ip_addr ip_addr_any = { 0x00000000UL };
const struct ip_addr ip_addr_broadcast = { 0xffffffffUL };

int memcmp_wb(u8_t *s1, u8_t *s2, int maxlen) 
{
	int i;

	for(i = 0; i < maxlen; i++) 
    {
		if(s1[i] != s2[i])
			return 0;
		if(s1[i] == 0)
			return 1;
	}

	return 1;
}

int ip_addr_maskcmp_wb(u8_t *s1, u8_t *s2, u8_t *s3)
{
    u32_t tempCmpA1,tempCmpA2,tempCmpA3;
    
    memcpy((u8_t *)&tempCmpA1,s1, sizeof(struct ip_addr )); 
    memcpy((u8_t *)&tempCmpA2,s2, sizeof(struct ip_addr ));
    memcpy((u8_t *)&tempCmpA3,s3, sizeof(struct ip_addr ));
    return ((tempCmpA1&tempCmpA3)==(tempCmpA2&tempCmpA3));
}

int ip_addr_isany_wb(u8_t *s1)
{
    u32_t value;
    
    if (NULL == s1)
    {
      return 1;
    }

    memcpy((u8_t *)&value,s1, sizeof(struct ip_addr ));
    if (0 == value)
    {
        return 1;
    }

    return 0;
}

int ip_addr_isbroadcast_wb(u8_t *s1, u8_t *s2)
{
   u32_t tempCmpA1,tempCmpA2;
    
    memcpy((u8_t *)&tempCmpA1,s1, sizeof(struct ip_addr) ); 
    memcpy((u8_t *)&tempCmpA2,s2, sizeof(struct ip_addr) );

    return (  ((tempCmpA1&(~tempCmpA2))==(0xffffffff &(~tempCmpA2)))
               ||(tempCmpA1==0xffffffff)
               ||(tempCmpA1==0x00000000) );

}

int ip_addr_ismulticast_wb(u8_t *s1)
{
    u32_t tempCmpA1;
    memcpy((u8_t *)&tempCmpA1,s1, sizeof(struct ip_addr) ); 
    
    return  (tempCmpA1& ntohl(0xf0000000)==ntohl(0xe0000000));
    
}

//#define ip4_addr1(ipaddr) ((unsigned int)(ntohl((ipaddr)->addr) >> 24) & 0xff)

u32_t ip4_addr_wb(u8_t *s1)
{
    u32_t value;
    
    if (NULL == s1)
    {
      return 0;
    }

    memcpy((u8_t *)&value,s1, sizeof(struct ip_addr ));
    
    return value;
}