if_ether.h

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00001 #ifndef _NETINET_IF_ETHER_H_
00002 #define _NETINET_IF_ETHER_H_
00003 
00004 /*
00005  * Copyright (C) 2001-2003 by egnite Software GmbH. All rights reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions
00009  * are met:
00010  *
00011  * 1. Redistributions of source code must retain the above copyright
00012  *    notice, this list of conditions and the following disclaimer.
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in the
00015  *    documentation and/or other materials provided with the distribution.
00016  * 3. Neither the name of the copyright holders nor the names of
00017  *    contributors may be used to endorse or promote products derived
00018  *    from this software without specific prior written permission.
00019  *
00020  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00021  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00022  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00023  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00024  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00025  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00026  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00027  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00028  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00029  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00030  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00031  * SUCH DAMAGE.
00032  *
00033  * For additional information see http://www.ethernut.de/
00034  *
00035  * -
00036  * Portions Copyright (C) 2000 David J. Hudson <dave@humbug.demon.co.uk>
00037  *
00038  * This file is distributed in the hope that it will be useful, but WITHOUT
00039  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00040  * FITNESS FOR A PARTICULAR PURPOSE.
00041  *
00042  * You can redistribute this file and/or modify it under the terms of the GNU
00043  * General Public License (GPL) as published by the Free Software Foundation;
00044  * either version 2 of the License, or (at your discretion) any later version.
00045  * See the accompanying file "copying-gpl.txt" for more details.
00046  *
00047  * As a special exception to the GPL, permission is granted for additional
00048  * uses of the text contained in this file.  See the accompanying file
00049  * "copying-liquorice.txt" for details.
00050  * -
00051  * Portions Copyright (c) 1983, 1993 by
00052  *  The Regents of the University of California.  All rights reserved.
00053  *
00054  * Redistribution and use in source and binary forms, with or without
00055  * modification, are permitted provided that the following conditions
00056  * are met:
00057  * 1. Redistributions of source code must retain the above copyright
00058  *    notice, this list of conditions and the following disclaimer.
00059  * 2. Redistributions in binary form must reproduce the above copyright
00060  *    notice, this list of conditions and the following disclaimer in the
00061  *    documentation and/or other materials provided with the distribution.
00062  * 3. Neither the name of the University nor the names of its contributors
00063  *    may be used to endorse or promote products derived from this software
00064  *    without specific prior written permission.
00065  *
00066  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
00067  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00068  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00069  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
00070  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00071  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00072  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00073  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00074  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00075  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00076  * SUCH DAMAGE.
00077  */
00078 
00079 /*
00080  * $Log: if_ether.h,v $
00081  * Revision 1.5  2008/07/14 13:10:30  haraldkipp
00082  * Added macros to determine Ethernet address types.
00083  *
00084  * Revision 1.4  2006/08/01 07:41:01  haraldkipp
00085  * New functions ether_aton() and ether_ntoa() added. They convert the ASCII
00086  * representation of an Ethernet MAC address to its binary form and vice versa.
00087  *
00088  * Revision 1.3  2005/04/05 17:38:45  haraldkipp
00089  * ARM7 memory alignment bugs fixed.
00090  *
00091  * Revision 1.2  2004/03/16 16:48:28  haraldkipp
00092  * Added Jan Dubiec's H8/300 port.
00093  *
00094  * Revision 1.1.1.1  2003/05/09 14:41:13  haraldkipp
00095  * Initial using 3.2.1
00096  *
00097  * Revision 1.6  2003/02/04 18:00:45  harald
00098  * Version 3 released
00099  *
00100  * Revision 1.5  2002/06/26 17:29:21  harald
00101  * First pre-release with 2.4 stack
00102  *
00103  */
00104 
00105 #include <sys/types.h>
00106 #include <net/if_var.h>
00107 #include <net/if_arp.h>
00108 
00116 #ifdef __cplusplus
00117 extern "C" {
00118 #endif
00119 
00128 typedef struct __attribute__((packed)) ether_header {
00129     u_char  ether_dhost[6];     
00130     u_char  ether_shost[6];     
00131     u_short ether_type;         
00132 } ETHERHDR;
00133 
00134 #define ETHERTYPE_IP    0x0800  
00135 #define ETHERTYPE_ARP   0x0806  
00137 #define ETHERMTU    1500        
00138 //#define ETHERMTU    576           
00139 #define ETHERMIN    (60-14)     
00148 #define ETHER_IS_ZERO(ea) (((ea)[0] | (ea)[1] | (ea)[2] | (ea)[3] | (ea)[4] | (ea)[5]) == 0)
00149 
00157 #define ETHER_IS_BROADCAST(ea) (((ea)[0] & (ea)[1] & (ea)[2] & (ea)[3] & (ea)[4] & (ea)[5]) == 0xFF)
00158 
00168 #define ETHER_IS_MULTICAST(ea) ((ea)[0] & 1) 
00169 
00179 #define ETHER_IS_UNICAST(ea) (!ETHER_IS_ZERO(ea) && !ETHER_IS_MULTICAST(ea)) 
00180 
00181 extern u_char *ether_aton(CONST char *str);
00182 extern char *ether_ntoa(CONST u_char *mac);
00183 
00184 
00195 typedef struct __attribute__((packed)) ether_arp {
00196     ARPHDR ea_hdr;     
00197     u_char arp_sha[6]; 
00198     u_long arp_spa;    
00199     u_char arp_tha[6]; 
00200     u_long arp_tpa;    
00201 } ETHERARP;
00202 
00203 extern void NutArpInput(NUTDEVICE *dev, NETBUF *nb);
00204 
00205 extern NETBUF *NutArpAllocNetBuf(u_short type, u_long ip, u_char *mac);
00206 extern int NutArpOutput(NUTDEVICE *dev, NETBUF *nb);
00207 
00208 extern void NutArpCacheUpdate(NUTDEVICE *dev, u_long ip, u_char *ha);
00209 
00210 extern int NutArpCacheQuery(NUTDEVICE *dev, u_long ip, u_char *mac);
00211 
00212 #ifdef __cplusplus
00213 }
00214 #endif
00215 
00216 #endif

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