lib/liblwip/include/ipv4/lwip/inet.h
/*
 * 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 <adam@sics.se>
 *
 */
#ifndef __LWIP_INET_H__
#define __LWIP_INET_H__

#include "lwip/opt.h"
#include "lwip/def.h"
#include "lwip/ip_addr.h"

#ifdef __cplusplus
extern "C" {
#endif

/** For compatibility with BSD code */
struct in_addr {
  u32_t s_addr;
};

/** 255.255.255.255 */
#define INADDR_NONE         IPADDR_NONE
/** 127.0.0.1 */
#define INADDR_LOOPBACK     IPADDR_LOOPBACK
/** 0.0.0.0 */
#define INADDR_ANY          IPADDR_ANY
/** 255.255.255.255 */
#define INADDR_BROADCAST    IPADDR_BROADCAST

/* Definitions of the bits in an Internet address integer.

   On subnets, host and network parts are found according to
   the subnet mask, not these masks.  */
#define IN_CLASSA(a)        IP_CLASSA(a)
#define IN_CLASSA_NET       IP_CLASSA_NET
#define IN_CLASSA_NSHIFT    IP_CLASSA_NSHIFT
#define IN_CLASSA_HOST      IP_CLASSA_HOST
#define IN_CLASSA_MAX       IP_CLASSA_MAX

#define IN_CLASSB(b)        IP_CLASSB(b)
#define IN_CLASSB_NET       IP_CLASSB_NET
#define IN_CLASSB_NSHIFT    IP_CLASSB_NSHIFT
#define IN_CLASSB_HOST      IP_CLASSB_HOST
#define IN_CLASSB_MAX       IP_CLASSB_MAX

#define IN_CLASSC(c)        IP_CLASSC(c)
#define IN_CLASSC_NET       IP_CLASSC_NET
#define IN_CLASSC_NSHIFT    IP_CLASSC_NSHIFT
#define IN_CLASSC_HOST      IP_CLASSC_HOST
#define IN_CLASSC_MAX       IP_CLASSC_MAX

#define IN_CLASSD(d)        IP_CLASSD(d)
#define IN_CLASSD_NET       IP_CLASSD_NET     /* These ones aren't really */
#define IN_CLASSD_NSHIFT    IP_CLASSD_NSHIFT  /*   net and host fields, but */
#define IN_CLASSD_HOST      IP_CLASSD_HOST    /*   routing needn't know. */
#define IN_CLASSD_MAX       IP_CLASSD_MAX

#define IN_MULTICAST(a)     IP_MULTICAST(a)

#define IN_EXPERIMENTAL(a)  IP_EXPERIMENTAL(a)
#define IN_BADCLASS(a)      IP_BADCLASS(a)

#define IN_LOOPBACKNET      IP_LOOPBACKNET

#define inet_addr_from_ipaddr(target_inaddr, source_ipaddr) ((target_inaddr)->s_addr = ip4_addr_get_u32(source_ipaddr))
#define inet_addr_to_ipaddr(target_ipaddr, source_inaddr)   (ip4_addr_set_u32(target_ipaddr, (source_inaddr)->s_addr))
/* ATTENTION: the next define only works because both s_addr and ip_addr_t are an u32_t effectively! */
#define inet_addr_to_ipaddr_p(target_ipaddr_p, source_inaddr)   ((target_ipaddr_p) = (ip_addr_t*)&((source_inaddr)->s_addr))

/* directly map this to the lwip internal functions */
#define inet_addr(cp)         ipaddr_addr(cp)
#define inet_aton(cp, addr)   ipaddr_aton(cp, (ip_addr_t*)addr)
#define inet_ntoa(addr)       ipaddr_ntoa((ip_addr_t*)&(addr))
#define inet_ntoa_r(addr, buf, buflen) ipaddr_ntoa_r((ip_addr_t*)&(addr), buf, buflen)

#ifdef __cplusplus
}
#endif

#endif /* __LWIP_INET_H__ */
