text: /*
   * 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__ */
  