#ifndef _NETINET_IP_H_ #define _NETINET_IP_H_ /* * Copyright (C) 2001-2005 by egnite Software GmbH. 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 copyright holders nor the names of * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 * COPYRIGHT OWNER 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. * * For additional information see http://www.ethernut.de/ * * - * Portions Copyright (C) 2000 David J. Hudson * * This file is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. * * You can redistribute this file and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software Foundation; * either version 2 of the License, or (at your discretion) any later version. * See the accompanying file "copying-gpl.txt" for more details. * * As a special exception to the GPL, permission is granted for additional * uses of the text contained in this file. See the accompanying file * "copying-liquorice.txt" for details. * - * Portions Copyright (c) 1983, 1993 by * The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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. */ /* * $Log$ * Revision 1.8 2008/10/05 16:47:04 haraldkipp * Removed attribute 'packed' from typedef. * * Revision 1.7 2008/08/20 06:56:59 haraldkipp * Implemented IP demultiplexer. * * Revision 1.6 2008/08/11 07:00:23 haraldkipp * BSD types replaced by stdint types (feature request #1282721). * * Revision 1.5 2005/08/02 17:46:49 haraldkipp * Major API documentation update. * * Revision 1.4 2005/04/05 17:38:45 haraldkipp * ARM7 memory alignment bugs fixed. * * Revision 1.3 2004/12/16 18:47:02 haraldkipp * Added Damian Slee's IP filter function. * * Revision 1.2 2004/03/16 16:48:28 haraldkipp * Added Jan Dubiec's H8/300 port. * * Revision 1.1.1.1 2003/05/09 14:41:14 haraldkipp * Initial using 3.2.1 * * Revision 1.9 2003/02/04 18:00:45 harald * Version 3 released * * Revision 1.8 2002/06/26 17:29:21 harald * First pre-release with 2.4 stack * */ #include #include /*! * \file netinet/ip.h * \brief Definitions for internet protocol version 4. * * RFC 791. */ /*! * \addtogroup xgIP */ /*@{*/ /* Check if IP is a multicast address */ #define IP_IS_MULTICAST(_a) ((ntohl(_a) & 0xF0000000U) == 0xE0000000U) #define IPVERSION 4 /*!< \brief IP protocol version. */ #define IP_DF 0x4000 /*!< \brief Don't fragment flag. */ #define IP_MF 0x2000 /*!< \brief More fragments flag. */ #define IP_OFFMASK 0x1fff /*!< \brief Mask for fragmenting bits. */ /*! * \brief Internet header type. */ typedef struct ip IPHDR; typedef struct ip_opt IPHDR_OPT; /*! * \brief Structure of an internet header. */ struct NUT_PACKED_TYPE ip { #ifndef __BIG_ENDIAN__ #ifdef __IMAGECRAFT__ unsigned ip_hl:4, /*!< \brief Header length. */ ip_v:4; /*!< \brief Version. */ #else uint8_t ip_hl:4, /*!< \brief Header length. */ ip_v:4; /*!< \brief Version. */ #endif #else /* #ifndef __BIG_ENDIAN__ */ uint8_t ip_v:4, /*!< \brief Version. */ ip_hl:4; /*!< \brief Header length. */ #endif /* #ifndef __BIG_ENDIAN__ */ uint8_t ip_tos; /*!< \brief Type of service. */ short ip_len; /*!< \brief Total length. */ uint16_t ip_id; /*!< \brief Identification. */ short ip_off; /*!< \brief Fragment offset field. */ uint8_t ip_ttl; /*!< \brief Time to live. */ uint8_t ip_p; /*!< \brief Protocol. */ uint16_t ip_sum; /*!< \brief Checksum. */ uint32_t ip_src; /*!< \brief Source IP address. */ uint32_t ip_dst; /*!< \brief Destination IP address. */ }; struct NUT_PACKED_TYPE ip_opt { #ifndef __BIG_ENDIAN__ #ifdef __IMAGECRAFT__ unsigned ip_hl:4, /*!< \brief Header length. */ ip_v:4; /*!< \brief Version. */ #else uint8_t ip_hl:4, /*!< \brief Header length. */ ip_v:4; /*!< \brief Version. */ #endif #else /* #ifndef __BIG_ENDIAN__ */ uint8_t ip_v:4, /*!< \brief Version. */ ip_hl:4; /*!< \brief Header length. */ #endif /* #ifndef __BIG_ENDIAN__ */ uint8_t ip_tos; /*!< \brief Type of service. */ short ip_len; /*!< \brief Total length. */ uint16_t ip_id; /*!< \brief Identification. */ short ip_off; /*!< \brief Fragment offset field. */ uint8_t ip_ttl; /*!< \brief Time to live. */ uint8_t ip_p; /*!< \brief Protocol. */ uint16_t ip_sum; /*!< \brief Checksum. */ uint32_t ip_src; /*!< \brief Source IP address. */ uint32_t ip_dst; /*!< \brief Destination IP address. */ uint32_t ip_option; /*!< \brief Option. */ }; #define IPOPT_EOL 0 /*!< \brief End of option list. */ #define IPOPT_NOP 1 /*!< \brief No operation. */ #define IPOPT_RR 7 /*!< \brief Record packet route. */ #define IPOPT_TS 68 /*!< \brief Timestamp. */ #define IPOPT_SECURITY 130 /*!< \brief Provide s,c,h,tcc. */ #define IPOPT_LSRR 131 /*!< \brief Loose source route. */ #define IPOPT_SATID 136 /*!< \brief Satnet id. */ #define IPOPT_SSRR 137 /*!< \brief Strict source route. */ #define IPOPT_OPTVAL 0 /*!< \brief Option identifier offset. */ #define IPOPT_OLEN 1 /*!< \brief Option length offset. */ #define IPOPT_OFFSET 2 /*!< \brief Offset within option. */ #define IPOPT_MINOFF 4 /*!< \brief Minimum offset within option. */ #define MAXTTL 255 /*!< \brief Maximum time to live (seconds). */ #define IPDEFTTL 64 /*!< \brief Default time to live. */ #define IPFRAGTTL 60 /*!< \brief Time to live for fragments. */ #define IPTTLDEC 1 /*!< \brief Subtracted from time to live when forwarding. */ /*@}*/ /* * API declarations. */ #include extern int NutIpOutput(uint8_t proto, uint32_t dest, NETBUF * nb); extern int NutIpForward(NETBUF *nb); /* * Kernel declarations. */ #include extern void NutIpInput(NUTDEVICE * dev, NETBUF * nb); /* * Ip Filter declarations. */ typedef int (*NutIpFilterFunc) (uint32_t); extern void NutIpSetInputFilter(NutIpFilterFunc callbackFunc); extern int NutRegisterIpHandler(uint8_t prot, int (*hdlr)(NUTDEVICE *, NETBUF *)); extern int (*ip_demux) (NUTDEVICE *, NETBUF *); #endif