/*
 * 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 <adam@sics.se>
 *
 * $Id: inet.h,v 1.4 2002/01/23 10:53:48 adam Exp $
 */
#ifndef __LWIP_INET_H__
#define __LWIP_INET_H__

#include "lwip/arch.h"

#include "lwip/opt.h"
#include "lwip/pbuf.h"
#include "ipv4/lwip/ip_addr.h"

u16_t inet_chksum(void *dataptr, u16_t len);
u16_t inet_chksum_pbuf(struct pbuf *p);
u16_t inet_chksum_pseudo(struct pbuf *p,
			 union ip_addr *src, union ip_addr *dest,
			 u8_t proto, u16_t proto_len);

#ifdef HTONS
#undef HTONS
#endif /* HTONS */
#ifdef NTOHS
#undef NTOHS
#endif /* NTOHS */
#ifdef HTONL
#undef HTONL
#endif /* HTONL */
#ifdef NTOHL
#undef NTOHL
#endif /* NTOHL */

#ifndef HTONS
#   if BYTE_ORDER == BIG_ENDIAN
#      define HTONS(n) (n)
#      define htons(n) HTONS(n)
#   else /* BYTE_ORDER == BIG_ENDIAN */
#      define HTONS(n) (((((u16_t)(n) & 0xff)) << 8) | (((u16_t)(n) & 0xff00) >> 8))
#   endif /* BYTE_ORDER == BIG_ENDIAN */
#endif /* HTONS */

#ifdef NTOHS
#undef NTOHS
#endif /* NTOHS */

#ifdef ntohs
#undef ntohs
#endif /* ntohs */

#define NTOHS HTONS
#define ntohs htons


#ifndef HTONL
#   if BYTE_ORDER == BIG_ENDIAN
#      define HTONL(n) (n)
#      define htonl(n) HTONL(n)
#   else /* BYTE_ORDER == BIG_ENDIAN */
#      define HTONL(n) (((((u32_t)(n) & 0xff)) << 24) | \
                        ((((u32_t)(n) & 0xff00)) << 8) | \
                        ((((u32_t)(n) & 0xff0000)) >> 8) | \
                        ((((u32_t)(n) & 0xff000000)) >> 24))
#   endif /* BYTE_ORDER == BIG_ENDIAN */
#endif /* HTONL */

#ifdef ntohl
#undef ntohl
#endif /* ntohl */

#ifdef NTOHL
#undef NTOHL
#endif /* NTOHL */

#define NTOHL HTONL
#define ntohl htonl

#ifndef _MACHINE_ENDIAN_H_
#ifndef _NETINET_IN_H
#ifndef _LINUX_BYTEORDER_GENERIC_H

#if BYTE_ORDER == LITTLE_ENDIAN
u16_t htons(u16_t n);
u32_t htonl(u32_t n);
#else
#endif /* BYTE_ORDER == LITTLE_ENDIAN */

#endif /* _LINUX_BYTEORDER_GENERIC_H */
#endif /* _NETINET_IN_H */
#endif /* _MACHINE_ENDIAN_H_ */

#endif /* __LWIP_INET_H__ */