/* * 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/arch.h"#include "lwip/opt.h"#include "lwip/pbuf.h"#include "lwip/ip_addr.h"u16_t inet_chksum(void *dataptr, u16_t len);#if 0 /* optimized routine */u16_t inet_chksum4(u8_t *dataptr, u16_t len);#endifu16_t inet_chksum_pbuf(struct pbuf *p);u16_t inet_chksum_pseudo(struct pbuf *p,       struct ip_addr *src, struct ip_addr *dest,       u8_t proto, u16_t proto_len);u32_t inet_addr(const char *cp);s8_t inet_aton(const char *cp, struct in_addr *addr);char *inet_ntoa(struct in_addr addr); /* returns ptr to static buffer; not reentrant! */#ifdef htons#undef htons#endif /* htons */#ifdef htonl#undef htonl#endif /* htonl */#ifdef ntohs#undef ntohs#endif /* ntohs */#ifdef ntohl#undef ntohl#endif /* ntohl */#if BYTE_ORDER == BIG_ENDIAN#define htons(x) (x)#define ntohs(x) (x)#define htonl(x) (x)#define ntohl(x) (x)#else#ifdef LWIP_PREFIX_BYTEORDER_FUNCS/* workaround for naming collisions on some platforms */#define htons lwip_htons#define ntohs lwip_ntohs#define htonl lwip_htonl#define ntohl lwip_ntohl#endifu16_t htons(u16_t x);u16_t ntohs(u16_t x);u32_t htonl(u32_t x);u32_t ntohl(u32_t x);#endif#endif /* __LWIP_INET_H__ */