usr/src/uts/common/netinet/if_ether.h

   1 /*
   2  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
   3  * Use is subject to license terms.
   4  */
   5
   6 /*
   7  * Copyright (c) 1982, 1986 Regents of the University of California.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms are permitted
  11  * provided that this notice is preserved and that due credit is given
  12  * to the University of California at Berkeley. The name of the University
  13  * may not be used to endorse or promote products derived from this
  14  * software without specific prior written permission. This software
  15  * is provided ``as is'' without express or implied warranty.
  16  */
  17
  18 #ifndef _NETINET_IF_ETHER_H
  19 #define _NETINET_IF_ETHER_H
  20
  21 #pragma ident   "%Z%%M% %I%     %E% SMI"
  22 /* if_ether.h 1.28 89/08/04 SMI; from UCB 7.2 12/7/87 */
  23
  24 #include <sys/ethernet.h>
  25
  26 /*
  27  * The following include is for compatibility with SunOS 3.x and
  28  * 4.3bsd.  Newly written programs should include it separately.
  29  */
  30 #include <net/if_arp.h>
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 /*
  37  * Ethernet Address Resolution Protocol.
  38  *
  39  * See RFC 826 for protocol description.  Structure below is adapted
  40  * to resolving internet addresses.  Field names used correspond to
  41  * RFC 826.
  42  */
  43 struct  ether_arp {
  44         struct  arphdr ea_hdr;          /* fixed-size header */
  45         ether_addr_t arp_sha;           /* sender hardware address */
  46         uchar_t arp_spa[4];             /* sender protocol address */
  47         ether_addr_t arp_tha;           /* target hardware address */
  48         uchar_t arp_tpa[4];             /* target protocol address */
  49 };
  50 #define arp_hrd ea_hdr.ar_hrd
  51 #define arp_pro ea_hdr.ar_pro
  52 #define arp_hln ea_hdr.ar_hln
  53 #define arp_pln ea_hdr.ar_pln
  54 #define arp_op  ea_hdr.ar_op
  55
  56 /*
  57  *      multicast address structure
  58  *
  59  *      Keep a reference count for each multicast address so
  60  *      addresses loaded into chip are unique.
  61  */
  62 struct  mcaddr {
  63         struct  ether_addr      mc_enaddr;      /* multicast address */
  64         ushort_t mc_count;                      /* reference count */
  65 };
  66 #define MCADDRMAX       64              /* multicast addr table length */
  67 #define MCCOUNTMAX      4096            /* multicast addr max reference count */
  68
  69 /*
  70  * Structure shared between the ethernet driver modules and
  71  * the address resolution code.  For example, each ec_softc or il_softc
  72  * begins with this structure.
  73  *
  74  * The structure contains a pointer to an array of multicast addresses.
  75  * This pointer is NULL until the first successful SIOCADDMULTI ioctl
  76  * is issued for the interface.
  77  */
  78 struct  arpcom {
  79         struct  ifnet ac_if;            /* network-visible interface */
  80         struct  ether_addr ac_enaddr;   /* ethernet hardware address */
  81         struct  in_addr ac_ipaddr;      /* copy of ip address- XXX */
  82         struct  mcaddr *ac_mcaddr;      /* table of multicast addrs */
  83         ushort_t ac_nmcaddr;            /* count of M/C addrs in use */
  84         struct  in_addr ac_lastip;      /* cache of last ARP lookup */
  85         struct  ether_addr ac_lastarp;  /* result of the last ARP */
  86 };
  87
  88 /*
  89  * Internet to ethernet address resolution table.
  90  */
  91 struct  arptab {
  92         struct  in_addr at_iaddr;       /* internet address */
  93         union {
  94             struct ether_addr atu_enaddr;       /* ethernet address */
  95             long   atu_tvsec;                   /* timestamp if incomplete */
  96         }       at_union;
  97         uchar_t at_timer;               /* minutes since last reference */
  98         uchar_t at_flags;               /* flags */
  99         struct  mbuf *at_hold;          /* last packet until resolved/timeout */
 100 };
 101
 102 #define at_enaddr       at_union.atu_enaddr
 103 #define at_tvsec        at_union.atu_tvsec
 104
 105 /*
 106  * Copy IP addresses from a to b - assumes that the two given
 107  * pointers can be referenced as shorts.  On architectures
 108  * where this is not the case, use bcopy instead.
 109  */
 110 #if defined(__sparc) || defined(__i386) || defined(__amd64)
 111 #define ip_copy(a, b) { ((short *)b)[0] = ((short *)a)[0]; \
 112         ((short *)b)[1] = ((short *)a)[1]; }
 113 #else
 114 #define ip_copy(a, b) (bcopy((caddr_t)a, (caddr_t)b, 4))
 115 #endif
 116
 117 #ifdef  __cplusplus
 118 }
 119 #endif
 120
 121 #endif  /* _NETINET_IF_ETHER_H */