source: trunk/src/emx/include/netinet/if_ether.h@ 175

/* Modified for emx by hv 1994,1996
 *
 * Copyright (c) 1982, 1986 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. 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.
 *
 *      from: @(#)if_ether.h    7.5 (Berkeley) 6/28/90
 *      $Id: if_ether.h,v 1.8 1994/02/02 05:58:54 hpeyerl Exp $
 */

#ifndef _NETINET_IF_ETHER_H_
#define _NETINET_IF_ETHER_H_

/*
 * Ethernet address - 6 octets
 * this is only used by the ethers(3) functions.
 */
struct ether_addr {
        u_char ether_addr_octet[6];
};

/*
 * Structure of a 10Mb/s Ethernet header.
 */
struct  ether_header {
        u_char  ether_dhost[6];
        u_char  ether_shost[6];
        u_short ether_type;
};

#define ETHERTYPE_PUP           0x0200  /* PUP protocol */
/* the IBM header corrects the following to 0x608 for OS/2 but I believe
 * this is just a dirty hack 
 */
#define ETHERTYPE_ARP           0x0806  /* address resolution protocol */
#define ETHERTYPE_IP            0x0800  /* IP protocol */
#define ETHERTYPE_REVARP        0x8035  /* reverse addr resolution protocol */

/*
 * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
 * (type-ETHERTYPE_TRAIL)*512 bytes of data followed
 * by an ETHER type (as given above) and then the (variable-length) header.
 */
#define ETHERTYPE_TRAIL         0x1000          /* Trailer packet */
#define ETHERTYPE_NTRAILER      16

#define ETHERMTU        1500
#define ETHERMIN        (60-14)

/*
 * Ethernet Address Resolution Protocol.
 *
 * See RFC 826 for protocol description.  Structure below is adapted
 * to resolving internet addresses.  Field names used correspond to 
 * RFC 826.
 */
struct  ether_arp {
        struct  arphdr ea_hdr;  /* fixed-size header */
        u_char  arp_sha[6];     /* sender hardware address */
        u_char  arp_spa[4];     /* sender protocol address */
        u_char  arp_tha[6];     /* target hardware address */
        u_char  arp_tpa[4];     /* target protocol address */
};
#define arp_hrd ea_hdr.ar_hrd
#define arp_pro ea_hdr.ar_pro
#define arp_hln ea_hdr.ar_hln
#define arp_pln ea_hdr.ar_pln
#define arp_op  ea_hdr.ar_op


/*
 * Structure shared between the ethernet driver modules and
 * the address resolution code.  For example, each ec_softc or il_softc
 * begins with this structure.
 */
struct  arpcom {
        struct  ifnet ac_if;            /* network-visible interface */
        u_char  ac_enaddr[6];           /* ethernet hardware address */
        struct in_addr ac_ipaddr;       /* copy of ip address- XXX */
/* not os2 */
/*      struct ether_multi *ac_multiaddrs;*/ /* list of ether multicast addrs */
/*      int ac_multicnt;*/              /* length of ac_multiaddrs list */
};

/*
 * Internet to ethernet address resolution table.
 */
#ifdef TCPIPV4
#pragma pack(1)
#else
#pragma pack(4)
#endif
struct  arptab {
        struct  in_addr at_iaddr;       /* internet address */
        u_char  at_enaddr[6];           /* ethernet address */
        u_char  at_timer;               /* minutes since last reference */
        u_char  at_flags;               /* flags */
        struct  mbuf *at_hold;          /* last packet until resolved/timeout */
/* only os2 */
        u_short at_rcf;                 /* token ring routing control field */
        u_short at_rseg[8];             /* token ring routing segments */
        u_long at_millisec;             /* TOD millsecons of last update */
#ifdef TCPIPV4
        short at_interface;             /* interface index */
#else
        int at_interface;               /* interface index */
#endif
};
#pragma pack()

#endif /* !_NETINET_IF_ETHER_H_ */