ip_addr.h

这是我们的嵌入式作业 在嵌入式平台上开发的

/*
 * 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: ip_addr.h,v 1.4 2002/03/18 13:08:47 adam Exp $
 */
#ifndef __LWIP_IP_ADDR_H__
#define __LWIP_IP_ADDR_H__

#include "lwip/arch.h"

#define IP_ADDR_ANY 0

#define IP_ADDR_BROADCAST (&ip_addr_broadcast)


PACK_STRUCT_BEGIN
packed union ip_addr {
	packed struct ip_addr16
	{
		u16_t addr1;
		u16_t addr2;
	}ipaddr16;
	u32_t addr;
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END


extern union ip_addr ip_addr_broadcast;

#define IP4_ADDRESS32(ipaddr, a,b,c,d) (ipaddr) = ((u32_t)(d & 0xff) << 24) | ((u32_t)(c & 0xff) << 16) | \
                                                         ((u32_t)(b & 0xff) << 8) | (u32_t)(a & 0xff)

#define IP4_ADDR(ipaddr, a,b,c,d) (ipaddr)->ipaddr16.addr1 = ((u16_t)(b & 0xff) << 8) | ((u16_t)(a & 0xff));\
                                                         (ipaddr)->ipaddr16.addr2=((u16_t)(d & 0xff) << 8) | ((u16_t)(c & 0xff))

/*#define ip_addr_set(dest, src) (dest)->addr = \
                               ((src) == IP_ADDR_ANY? IP_ADDR_ANY:\
				((union ip_addr *)src)->addr)
/*#define ip_addr_maskcmp(addr1, addr2, mask) (((addr1)->addr & \
                                              (mask)->addr) == \
                                             ((addr2)->addr & \
                                              (mask)->addr))*/

/*#define ip_addr_isbroadcast(addr1, mask) (((((addr1)->addr) & ~((mask)->addr)) == \
					 (0xffffffff & ~((mask)->addr))) || \
                                         ((addr1)->addr == 0xffffffff) || \
                                         ((addr1)->addr == 0x00000000))*/


//#define ip_addr_ismulticast(addr1) (((addr1)->addr & ntohl(0xf0000000)) == ntohl(0xe0000000))
				   

#define ip_addr_debug_print(ipaddr) DEBUGF(LWIP_DEBUG, ("%d.%d.%d.%d", \
		    (u8_t)(ntohl((ipaddr)->addr) >> 24) & 0xff, \
		    (u8_t)(ntohl((ipaddr)->addr) >> 16) & 0xff, \
		    (u8_t)(ntohl((ipaddr)->addr) >> 8) & 0xff, \
		    (u8_t)ntohl((ipaddr)->addr) & 0xff))


#define ip4_addr1(ipaddr) ((u8_t)(ntohl((ipaddr)->addr) >> 24) & 0xff)
#define ip4_addr2(ipaddr) ((u8_t)(ntohl((ipaddr)->addr) >> 16) & 0xff)
#define ip4_addr3(ipaddr) ((u8_t)(ntohl((ipaddr)->addr) >> 8) & 0xff)
#define ip4_addr4(ipaddr) ((u8_t)(ntohl((ipaddr)->addr)) & 0xff)

char ip_addr_cmp(union ip_addr *addr1, union ip_addr* addr2);
char ip_addr_isbroadcast(union ip_addr *paddr, union ip_addr *pmask) ;
char ip_addr_isany(union ip_addr *addr1);
char ip_addr_ismulticast(union ip_addr *paddr);
void swapIpaddr(union ip_addr *addr1, union ip_addr *addr2);
char ip_addr_maskcmp(union ip_addr *paddr1, union ip_addr *paddr2, union ip_addr *pmask);
void ip_addr_set(union ip_addr *dest, union ip_addr *src);
char String2IPAddress(char str[], union ip_addr *paddr);
char String2IPAddress32(char str[], u32_t* paddr);

#endif /* __LWIP_IP_ADDR_H__ */