if_ether.h

含有完整TCP/IP PPP协议的嵌入式操作系统

#ifndef _NETINET_IF_ETHER_H_
#define _NETINET_IF_ETHER_H_

/*
 * Copyright (C) 2001-2003 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 EGNITE SOFTWARE GMBH 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 EGNITE
 * SOFTWARE GMBH 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 <[e-mail]>
 *
 * 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: if_ether.h,v $
 * Revision 1.3  2005/04/05 17:38:45  haraldkipp
 * ARM7 memory alignment bugs fixed.
 *
 * 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 14:41:13  haraldkipp
 * Initial using 3.2.1
 *
 * Revision 1.6  2003/02/04 18:00:45  harald
 * Version 3 released
 *
 * Revision 1.5  2002/06/26 17:29:21  harald
 * First pre-release with 2.4 stack
 *
 */

#include <sys/types.h>
#include <net/if_var.h>
#include <net/if_arp.h>

/*!
 * \file netinet/if_ether.h
 * \brief Ethernet interface definitions.
 *
 * A more elaborated file description.
 */

#ifdef __cplusplus
extern "C" {
#endif

/*!
 * \struct ether_header if_ether.h netinet/if_ether.h
 * \brief Ethernet protocol header.
 */
/*!
 * \typedef ETHERHDR
 * \brief Ethernet protocol header type.
 */
typedef struct __attribute__((packed)) ether_header {
    u_char  ether_dhost[6];     /*!< \brief Destination MAC address. */
    u_char  ether_shost[6];     /*!< \brief Source MAC address. */
    u_short ether_type;         /*!< \brief Protocol type. */
} ETHERHDR;

#define ETHERTYPE_IP    0x0800  /*!< \brief IP protocol */
#define ETHERTYPE_ARP   0x0806  /*!< \brief Address resolution protocol */

#define ETHERMTU    1500        /*!< \brief Ethernet maximum transfer unit. */
//#define ETHERMTU    576           /*!< \brief Ethernet maximum transfer unit. */
#define ETHERMIN    (60-14)     /*!< \brief Ethernet minimum transfer unit. */

/*!
 * \struct ether_arp if_ether.h netinet/if_ether.h
 * \brief Ethernet ARP protocol structure.
 *
 * See RFC 826 for protocol description.
 */
/*!
 * \typedef ETHERARP
 * \brief Ethernet ARP protocol type.
 */
typedef struct __attribute__((packed)) ether_arp {
    ARPHDR ea_hdr;     /*!< \brief Fixed-size header. */
    u_char arp_sha[6]; /*!< \brief Source hardware address. */
    u_long arp_spa;    /*!< \brief Source protocol address. */
    u_char arp_tha[6]; /*!< \brief Target hardware address. */
    u_long arp_tpa;    /*!< \brief Target protocol address. */
} ETHERARP;

extern void NutArpInput(NUTDEVICE *dev, NETBUF *nb);

extern NETBUF *NutArpAllocNetBuf(u_short type, u_long ip, u_char *mac);
extern int NutArpOutput(NUTDEVICE *dev, NETBUF *nb);

extern void NutArpCacheUpdate(NUTDEVICE *dev, u_long ip, u_char *ha);

extern int NutArpCacheQuery(NUTDEVICE *dev, u_long ip, u_char *mac);

#ifdef __cplusplus
}
#endif

#endif