tcpdump.tproj/ospf.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Copyright (c) 1991, 1993, 1994, 1995, 1996
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * Redistribution and use in source and binary forms, with or without
  29  * modification, are permitted provided that: (1) source code distributions
  30  * retain the above copyright notice and this paragraph in its entirety, (2)
  31  * distributions including binary code include the above copyright notice and
  32  * this paragraph in its entirety in the documentation or other materials
  33  * provided with the distribution, and (3) all advertising materials mentioning
  34  * features or use of this software display the following acknowledgement:
  35  * ``This product includes software developed by the University of California,
  36  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  37  * the University nor the names of its contributors may be used to endorse
  38  * or promote products derived from this software without specific prior
  39  * written permission.
  40  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  41  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  42  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  43  *
  44  * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu)
  45  */
  46 #define OSPF_TYPE_UMD   0       /* UMd's special monitoring packets */
  47 #define OSPF_TYPE_HELLO 1       /* Hello */
  48 #define OSPF_TYPE_DB    2       /* Database Description */
  49 #define OSPF_TYPE_LSR   3       /* Link State Request */
  50 #define OSPF_TYPE_LSU   4       /* Link State Update */
  51 #define OSPF_TYPE_LSA   5       /* Link State Ack */
  52 #define OSPF_TYPE_MAX   6
  53
  54 /* Options *_options    */
  55 #define OSPF_OPTION_T   0x01    /* T bit: TOS support   */
  56 #define OSPF_OPTION_E   0x02    /* E bit: External routes advertised    */
  57 #define OSPF_OPTION_MC  0x04    /* MC bit: Multicast capable */
  58
  59 /* ospf_authtype        */
  60 #define OSPF_AUTH_NONE          0       /* No auth-data */
  61 #define OSPF_AUTH_SIMPLE        1       /* Simple password */
  62
  63 /* db_flags     */
  64 #define OSPF_DB_INIT            0x04        /*  */
  65 #define OSPF_DB_MORE            0x02
  66 #define OSPF_DB_MASTER          0x01
  67
  68 /* ls_type      */
  69 #define LS_TYPE_ROUTER          1   /* router link */
  70 #define LS_TYPE_NETWORK         2   /* network link */
  71 #define LS_TYPE_SUM_IP          3   /* summary link */
  72 #define LS_TYPE_SUM_ABR         4   /* summary area link */
  73 #define LS_TYPE_ASE             5   /* ASE  */
  74 #define LS_TYPE_GROUP           6   /* Group membership (multicast */
  75                                     /* extensions 23 July 1991) */
  76 #define LS_TYPE_MAX             7
  77
  78 /*************************************************
  79  *
  80  * is the above a bug in the documentation?
  81  *
  82  *************************************************/
  83
  84
  85 /* rla_link.link_type   */
  86 #define RLA_TYPE_ROUTER         1   /* point-to-point to another router */
  87 #define RLA_TYPE_TRANSIT        2   /* connection to transit network    */
  88 #define RLA_TYPE_STUB           3   /* connection to stub network       */
  89 #define RLA_TYPE_VIRTUAL        4   /* virtual link                     */
  90
  91 /* rla_flags    */
  92 #define RLA_FLAG_B      0x01
  93 #define RLA_FLAG_E      0x02
  94 #define RLA_FLAG_W1     0x04
  95 #define RLA_FLAG_W2     0x08
  96
  97 /* sla_tosmetric breakdown      */
  98 #define SLA_MASK_TOS            0x7f000000
  99 #define SLA_MASK_METRIC         0x00ffffff
 100 #define SLA_SHIFT_TOS           24
 101
 102 /* asla_tosmetric breakdown     */
 103 #define ASLA_FLAG_EXTERNAL      0x80000000
 104 #define ASLA_MASK_TOS           0x7f000000
 105 #define ASLA_SHIFT_TOS          24
 106 #define ASLA_MASK_METRIC        0x00ffffff
 107
 108 /* multicast vertex type */
 109 #define MCLA_VERTEX_ROUTER      1
 110 #define MCLA_VERTEX_NETWORK     2
 111
 112 /* link state advertisement header */
 113 struct lsa_hdr {
 114     u_short ls_age;
 115     u_char ls_options;
 116     u_char ls_type;
 117     struct in_addr ls_stateid;
 118     struct in_addr ls_router;
 119     u_int32_t ls_seq;
 120     u_short ls_chksum;
 121     u_short ls_length;
 122 } ;
 123
 124 /* link state advertisement */
 125 struct lsa {
 126     struct lsa_hdr ls_hdr;
 127
 128     /* Link state types */
 129     union {
 130         /* Router links advertisements */
 131         struct {
 132             u_char rla_flags;
 133             u_char rla_zero[1];
 134             u_short rla_count;
 135             struct rlalink {
 136                 struct in_addr link_id;
 137                 struct in_addr link_data;
 138                 u_char link_type;
 139                 u_char link_toscount;
 140                 u_short link_tos0metric;
 141             } rla_link[1];              /* may repeat   */
 142         } un_rla;
 143
 144         /* Network links advertisements */
 145         struct {
 146             struct in_addr nla_mask;
 147             struct in_addr nla_router[1];       /* may repeat   */
 148         } un_nla;
 149
 150         /* Summary links advertisements */
 151         struct {
 152             struct in_addr sla_mask;
 153             u_int32_t sla_tosmetric[1]; /* may repeat   */
 154         } un_sla;
 155
 156         /* AS external links advertisements */
 157         struct {
 158             struct in_addr asla_mask;
 159             struct aslametric {
 160                 u_int32_t asla_tosmetric;
 161                 struct in_addr asla_forward;
 162                 struct in_addr asla_tag;
 163             } asla_metric[1];           /* may repeat   */
 164         } un_asla;
 165
 166         /* Multicast group membership */
 167         struct mcla {
 168             u_int32_t mcla_vtype;
 169             struct in_addr mcla_vid;
 170         } un_mcla[1];
 171     } lsa_un;
 172 } ;
 173
 174
 175 /*
 176  * TOS metric struct (will be 0 or more in router links update)
 177  */
 178 struct tos_metric {
 179     u_char tos_type;
 180     u_char tos_zero;
 181     u_short tos_metric;
 182 } ;
 183
 184 #define OSPF_AUTH_SIZE  8
 185
 186 /*
 187  * the main header
 188  */
 189 struct ospfhdr {
 190     u_char ospf_version;
 191     u_char ospf_type;
 192     u_short ospf_len;
 193     struct in_addr ospf_routerid;
 194     struct in_addr ospf_areaid;
 195     u_short ospf_chksum;
 196     u_short ospf_authtype;
 197     u_char ospf_authdata[OSPF_AUTH_SIZE];
 198     union {
 199
 200         /* Hello packet */
 201         struct {
 202             struct in_addr hello_mask;
 203             u_short hello_helloint;
 204             u_char hello_options;
 205             u_char hello_priority;
 206             u_int32_t hello_deadint;
 207             struct in_addr hello_dr;
 208             struct in_addr hello_bdr;
 209             struct in_addr hello_neighbor[1]; /* may repeat     */
 210         } un_hello;
 211
 212         /* Database Description packet */
 213         struct {
 214             u_char db_zero[2];
 215             u_char db_options;
 216             u_char db_flags;
 217             u_int32_t db_seq;
 218             struct lsa_hdr db_lshdr[1]; /* may repeat   */
 219         } un_db;
 220
 221         /* Link State Request */
 222         struct lsr {
 223             u_int32_t ls_type;
 224             struct in_addr ls_stateid;
 225             struct in_addr ls_router;
 226         } un_lsr[1];            /* may repeat   */
 227
 228         /* Link State Update */
 229         struct {
 230             u_int32_t lsu_count;
 231             struct lsa lsu_lsa[1]; /* may repeat        */
 232         } un_lsu;
 233
 234         /* Link State Acknowledgement */
 235         struct {
 236             struct lsa_hdr lsa_lshdr[1]; /* may repeat  */
 237         } un_lsa ;
 238     } ospf_un ;
 239 } ;
 240
 241 #define ospf_hello      ospf_un.un_hello
 242 #define ospf_db         ospf_un.un_db
 243 #define ospf_lsr        ospf_un.un_lsr
 244 #define ospf_lsu        ospf_un.un_lsu
 245 #define ospf_lsa        ospf_un.un_lsa
 246