if_ether.h

Macros

ETHERMIN          X
ETHERMTU          X
ETHERTYPE_ARP     X
ETHERTYPE_IP      X
ETHERTYPE_NTRAILERX
ETHERTYPE_PUP     X
ETHERTYPE_TRAIL   X
arp_hln           X
arp_hrd           X
arp_op            X
arp_pln           X
arp_pro           X

struct's

arpcom            X
arptab            X
ether_arp         X
ether_header      X

   1: /*
   2:  * Copyright (c) 1982, 1986 Regents of the University of California.
   3:  * All rights reserved.
   4:  *
   5:  * Redistribution and use in source and binary forms are permitted
   6:  * provided that this notice is preserved and that due credit is given
   7:  * to the University of California at Berkeley. The name of the University
   8:  * may not be used to endorse or promote products derived from this
   9:  * software without specific prior written permission. This software
  10:  * is provided ``as is'' without express or implied warranty.
  11:  *
  12:  *	@(#)if_ether.h	7.2 (Berkeley) 12/7/87
  13:  */
  14: 
  15: /*
  16:  * Structure of a 10Mb/s Ethernet header.
  17:  */
  18: struct  ether_header {
  19:     u_char  ether_dhost[6];
  20:     u_char  ether_shost[6];
  21:     u_short ether_type;
  22: };
  23: 
  24: #define ETHERTYPE_PUP   0x0200      /* PUP protocol */
  25: #define ETHERTYPE_IP    0x0800      /* IP protocol */
  26: #define ETHERTYPE_ARP   0x0806      /* Addr. resolution protocol */
  27: 
  28: /*
  29:  * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
  30:  * (type-ETHERTYPE_TRAIL)*512 bytes of data followed
  31:  * by an ETHER type (as given above) and then the (variable-length) header.
  32:  */
  33: #define ETHERTYPE_TRAIL     0x1000      /* Trailer packet */
  34: #define ETHERTYPE_NTRAILER  16
  35: 
  36: #define ETHERMTU    1500
  37: #define ETHERMIN    (60-14)
  38: 
  39: /*
  40:  * Ethernet Address Resolution Protocol.
  41:  *
  42:  * See RFC 826 for protocol description.  Structure below is adapted
  43:  * to resolving internet addresses.  Field names used correspond to
  44:  * RFC 826.
  45:  */
  46: struct  ether_arp {
  47:     struct  arphdr ea_hdr;  /* fixed-size header */
  48:     u_char  arp_sha[6]; /* sender hardware address */
  49:     u_char  arp_spa[4]; /* sender protocol address */
  50:     u_char  arp_tha[6]; /* target hardware address */
  51:     u_char  arp_tpa[4]; /* target protocol address */
  52: };
  53: #define arp_hrd ea_hdr.ar_hrd
  54: #define arp_pro ea_hdr.ar_pro
  55: #define arp_hln ea_hdr.ar_hln
  56: #define arp_pln ea_hdr.ar_pln
  57: #define arp_op  ea_hdr.ar_op
  58: 
  59: 
  60: /*
  61:  * Structure shared between the ethernet driver modules and
  62:  * the address resolution code.  For example, each ec_softc or il_softc
  63:  * begins with this structure.
  64:  */
  65: struct  arpcom {
  66:     struct  ifnet ac_if;        /* network-visible interface */
  67:     u_char  ac_enaddr[6];       /* ethernet hardware address */
  68:     struct in_addr ac_ipaddr;   /* copy of ip address- XXX */
  69: };
  70: 
  71: /*
  72:  * Internet to ethernet address resolution table.
  73:  */
  74: struct  arptab {
  75:     struct  in_addr at_iaddr;   /* internet address */
  76:     u_char  at_enaddr[6];       /* ethernet address */
  77:     u_char  at_timer;       /* minutes since last reference */
  78:     u_char  at_flags;       /* flags */
  79:     struct  mbuf *at_hold;      /* last packet until resolved/timeout */
  80: };
  81: 
  82: #ifdef  SUPERVISOR
  83: u_char etherbroadcastaddr[6];
  84: struct  arptab *arptnew();
  85: char *ether_sprintf();
  86: #endif