# inet.h

    00001 /*
    00002  * Copyright (c) 2001, Swedish Institute of Computer Science.
    00003  * All rights reserved.
    00004  *
    00005  * Redistribution and use in source and binary forms, with or without
    00006  * modification, are permitted provided that the following conditions
    00007  * are met:
    00008  * 1. Redistributions of source code must retain the above copyright
    00009  *    notice, this list of conditions and the following disclaimer.
    00010  * 2. Redistributions in binary form must reproduce the above copyright
    00011  *    notice, this list of conditions and the following disclaimer in the
    00012  *    documentation and/or other materials provided with the distribution.
    00013  * 3. Neither the name of the Institute nor the names of its contributors
    00014  *    may be used to endorse or promote products derived from this software
    00015  *    without specific prior written permission.
    00016  *
    00017  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
    00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
    00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    00027  * SUCH DAMAGE.
    00028  *
    00029  * This file is part of the lwIP TCP/IP stack.
    00030  *
    00031  * Author: Adam Dunkels <adam@sics.se>
    00032  *
    00033  * $Id$
    00034  */
    00035 #ifndef __LWIP_INET_H__
    00036 #define __LWIP_INET_H__
    00037
    00038 #include "net/arch.h"
    00039
    00040 #include "net/opt.h"
    00041 #include "net/pbuf.h"
    00042 #include "net/ipv4/ip_addr.h"
    00043
    00044 uInt16 inet_chksum(void *dataptr, uInt16 len);
    00045 uInt16 inet_chksum_pbuf(struct pbuf *p);
    00046 uInt16 inet_chksum_pseudo(struct pbuf *p,
    00047                          struct ip_addr *src, struct ip_addr *dest,
    00048                          uInt8 proto, uInt16 proto_len);
    00049
    00050 #ifdef HTONS
    00051 #undef HTONS
    00052 #endif /* HTONS */
    00053 #ifdef NTOHS
    00054 #undef NTOHS
    00055 #endif /* NTOHS */
    00056 #ifdef HTONL
    00057 #undef HTONL
    00058 #endif /* HTONL */
    00059 #ifdef NTOHL
    00060 #undef NTOHL
    00061 #endif /* NTOHL */
    00062
    00063 #ifndef HTONS
    00064 #   if BYTE_ORDER == BIG_ENDIAN
    00065 #      define HTONS(n) (n)
    00066 #      define htons(n) HTONS(n)
    00067 #   else /* BYTE_ORDER == BIG_ENDIAN */
    00068 #      define HTONS(n) (((((uInt16)(n) & 0xff)) << 8) | (((uInt16)(n) & 0xff00) >> 8))
    00069 #   endif /* BYTE_ORDER == BIG_ENDIAN */
    00070 #endif /* HTONS */
    00071
    00072 #ifdef NTOHS
    00073 #undef NTOHS
    00074 #endif /* NTOHS */
    00075
    00076 #ifdef ntohs
    00077 #undef ntohs
    00078 #endif /* ntohs */
    00079
    00080 #define NTOHS HTONS
    00081 #define ntohs htons
    00082
    00083
    00084 #ifndef HTONL
    00085 #   if BYTE_ORDER == BIG_ENDIAN
    00086 #      define HTONL(n) (n)
    00087 #      define htonl(n) HTONL(n)
    00088 #   else /* BYTE_ORDER == BIG_ENDIAN */
    00089 #      define HTONL(n) (((((uInt32)(n) & 0xff)) << 24) | \
    00090                         ((((uInt32)(n) & 0xff00)) << 8) | \
    00091                         ((((uInt32)(n) & 0xff0000)) >> 8) | \
    00092                         ((((uInt32)(n) & 0xff000000)) >> 24))
    00093 #   endif /* BYTE_ORDER == BIG_ENDIAN */
    00094 #endif /* HTONL */
    00095
    00096 #ifdef ntohl
    00097 #undef ntohl
    00098 #endif /* ntohl */
    00099
    00100 #ifdef NTOHL
    00101 #undef NTOHL
    00102 #endif /* NTOHL */
    00103
    00104 #define NTOHL HTONL
    00105 #define ntohl htonl
    00106
    00107 #ifndef _MACHINE_ENDIAN_H_
    00108 #ifndef _NETINET_IN_H
    00109 #ifndef _LINUX_BYTEORDER_GENERIC_H
    00110
    00111 #if BYTE_ORDER == LITTLE_ENDIAN
    00112 uInt16 htons(uInt16 n);
    00113 uInt32 htonl(uInt32 n);
    00114 #else
    00115 #endif /* BYTE_ORDER == LITTLE_ENDIAN */
    00116
    00117 #endif /* _LINUX_BYTEORDER_GENERIC_H */
    00118 #endif /* _NETINET_IN_H */
    00119 #endif /* _MACHINE_ENDIAN_H_ */
    00120
    00121 #endif /* __LWIP_INET_H__ */
    00122