contrib/tcpdump-3.9/ospf6.h

   1 /* @(#) $Header: /tcpdump/master/tcpdump/ospf6.h,v 1.6 2002/12/11 07:13:56 guy Exp $ (LBL) */
   2 /*
   3  * Copyright (c) 1991, 1993, 1994, 1995, 1996, 1997
   4  *      The Regents of the University of California.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that: (1) source code distributions
   8  * retain the above copyright notice and this paragraph in its entirety, (2)
   9  * distributions including binary code include the above copyright notice and
  10  * this paragraph in its entirety in the documentation or other materials
  11  * provided with the distribution, and (3) all advertising materials mentioning
  12  * features or use of this software display the following acknowledgement:
  13  * ``This product includes software developed by the University of California,
  14  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  15  * the University nor the names of its contributors may be used to endorse
  16  * or promote products derived from this software without specific prior
  17  * written permission.
  18  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  19  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  20  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  21  *
  22  * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu)
  23  */
  24 #define OSPF_TYPE_UMD   0       /* UMd's special monitoring packets */
  25 #define OSPF_TYPE_HELLO 1       /* Hello */
  26 #define OSPF_TYPE_DB    2       /* Database Description */
  27 #define OSPF_TYPE_LSR   3       /* Link State Request */
  28 #define OSPF_TYPE_LSU   4       /* Link State Update */
  29 #define OSPF_TYPE_LSA   5       /* Link State Ack */
  30 #define OSPF_TYPE_MAX   6
  31
  32 /* Options *_options    */
  33 #define OSPF6_OPTION_V6 0x01    /* V6 bit: A bit for peeping tom */
  34 #define OSPF6_OPTION_E  0x02    /* E bit: External routes advertised    */
  35 #define OSPF6_OPTION_MC 0x04    /* MC bit: Multicast capable */
  36 #define OSPF6_OPTION_N  0x08    /* N bit: For type-7 LSA */
  37 #define OSPF6_OPTION_R  0x10    /* R bit: Router bit */
  38 #define OSPF6_OPTION_DC 0x20    /* DC bit: Demand circuits */
  39
  40
  41 /* db_flags     */
  42 #define OSPF6_DB_INIT           0x04        /*  */
  43 #define OSPF6_DB_MORE           0x02
  44 #define OSPF6_DB_MASTER         0x01
  45
  46 /* ls_type      */
  47 #define LS_TYPE_ROUTER          1   /* router link */
  48 #define LS_TYPE_NETWORK         2   /* network link */
  49 #define LS_TYPE_INTER_AP        3   /* Inter-Area-Prefix */
  50 #define LS_TYPE_INTER_AR        4   /* Inter-Area-Router */
  51 #define LS_TYPE_ASE             5   /* ASE */
  52 #define LS_TYPE_GROUP           6   /* Group membership */
  53 #define LS_TYPE_TYPE7           7   /* Type 7 LSA */
  54 #define LS_TYPE_LINK            8   /* Link LSA */
  55 #define LS_TYPE_INTRA_AP        9   /* Intra-Area-Prefix */
  56 #define LS_TYPE_MAX             10
  57 #define LS_TYPE_MASK            0x1fff
  58
  59 #define LS_SCOPE_LINKLOCAL      0x0000
  60 #define LS_SCOPE_AREA           0x2000
  61 #define LS_SCOPE_AS             0x4000
  62 #define LS_SCOPE_MASK           0x6000
  63
  64 /*************************************************
  65  *
  66  * is the above a bug in the documentation?
  67  *
  68  *************************************************/
  69
  70
  71 /* rla_link.link_type   */
  72 #define RLA_TYPE_ROUTER         1   /* point-to-point to another router */
  73 #define RLA_TYPE_TRANSIT        2   /* connection to transit network    */
  74 #define RLA_TYPE_VIRTUAL        4   /* virtual link                     */
  75
  76 /* rla_flags    */
  77 #define RLA_FLAG_B      0x01
  78 #define RLA_FLAG_E      0x02
  79 #define RLA_FLAG_V      0x04
  80 #define RLA_FLAG_W      0x08
  81
  82 /* sla_tosmetric breakdown      */
  83 #define SLA_MASK_TOS            0x7f000000
  84 #define SLA_MASK_METRIC         0x00ffffff
  85 #define SLA_SHIFT_TOS           24
  86
  87 /* asla_metric */
  88 #define ASLA_FLAG_EXTERNAL      0x04000000
  89 #define ASLA_FLAG_FWDADDR       0x02000000
  90 #define ASLA_FLAG_ROUTETAG      0x01000000
  91 #define ASLA_MASK_METRIC        0x00ffffff
  92
  93 /* multicast vertex type */
  94 #define MCLA_VERTEX_ROUTER      1
  95 #define MCLA_VERTEX_NETWORK     2
  96
  97 typedef u_int32_t rtrid_t;
  98
  99 /* link state advertisement header */
 100 struct lsa_hdr {
 101     u_int16_t ls_age;
 102     u_int16_t ls_type;
 103     rtrid_t ls_stateid;
 104     rtrid_t ls_router;
 105     u_int32_t ls_seq;
 106     u_int16_t ls_chksum;
 107     u_int16_t ls_length;
 108 };
 109
 110 struct lsa_prefix {
 111     u_int8_t lsa_p_len;
 112     u_int8_t lsa_p_opt;
 113     u_int16_t lsa_p_mbz;
 114     u_int8_t lsa_p_prefix[4];
 115 };
 116
 117 /* link state advertisement */
 118 struct lsa {
 119     struct lsa_hdr ls_hdr;
 120
 121     /* Link state types */
 122     union {
 123         /* Router links advertisements */
 124         struct {
 125             union {
 126                 u_int8_t flg;
 127                 u_int32_t opt;
 128             } rla_flgandopt;
 129 #define rla_flags       rla_flgandopt.flg
 130 #define rla_options     rla_flgandopt.opt
 131             struct rlalink {
 132                 u_int8_t link_type;
 133                 u_int8_t link_zero[1];
 134                 u_int16_t link_metric;
 135                 u_int32_t link_ifid;
 136                 u_int32_t link_nifid;
 137                 rtrid_t link_nrtid;
 138             } rla_link[1];              /* may repeat   */
 139         } un_rla;
 140
 141         /* Network links advertisements */
 142         struct {
 143             u_int32_t nla_options;
 144             rtrid_t nla_router[1];      /* may repeat   */
 145         } un_nla;
 146
 147         /* Inter Area Prefix LSA */
 148         struct {
 149             u_int32_t inter_ap_metric;
 150             struct lsa_prefix inter_ap_prefix[1];
 151         } un_inter_ap;
 152
 153         /* AS external links advertisements */
 154         struct {
 155             u_int32_t asla_metric;
 156             struct lsa_prefix asla_prefix[1];
 157             /* some optional fields follow */
 158         } un_asla;
 159
 160 #if 0
 161         /* Summary links advertisements */
 162         struct {
 163             struct in_addr sla_mask;
 164             u_int32_t sla_tosmetric[1]; /* may repeat   */
 165         } un_sla;
 166
 167         /* Multicast group membership */
 168         struct mcla {
 169             u_int32_t mcla_vtype;
 170             struct in_addr mcla_vid;
 171         } un_mcla[1];
 172 #endif
 173
 174         /* Type 7 LSA */
 175
 176         /* Link LSA */
 177         struct llsa {
 178             union {
 179                 u_int8_t pri;
 180                 u_int32_t opt;
 181             } llsa_priandopt;
 182 #define llsa_priority   llsa_priandopt.pri
 183 #define llsa_options    llsa_priandopt.opt
 184             struct in6_addr llsa_lladdr;
 185             u_int32_t llsa_nprefix;
 186             struct lsa_prefix llsa_prefix[1];
 187         } un_llsa;
 188
 189         /* Intra-Area-Prefix */
 190         struct {
 191             u_int16_t intra_ap_nprefix;
 192             u_int16_t intra_ap_lstype;
 193             rtrid_t intra_ap_lsid;
 194             rtrid_t intra_ap_rtid;
 195             struct lsa_prefix intra_ap_prefix[1];
 196         } un_intra_ap;
 197     } lsa_un;
 198 };
 199
 200
 201 /*
 202  * TOS metric struct (will be 0 or more in router links update)
 203  */
 204 struct tos_metric {
 205     u_int8_t tos_type;
 206     u_int8_t tos_zero;
 207     u_int16_t tos_metric;
 208 };
 209
 210 #define OSPF_AUTH_SIZE  8
 211
 212 /*
 213  * the main header
 214  */
 215 struct ospf6hdr {
 216     u_int8_t ospf6_version;
 217     u_int8_t ospf6_type;
 218     u_int16_t ospf6_len;
 219     rtrid_t ospf6_routerid;
 220     rtrid_t ospf6_areaid;
 221     u_int16_t ospf6_chksum;
 222     u_int8_t ospf6_instanceid;
 223     u_int8_t ospf6_rsvd;
 224     union {
 225
 226         /* Hello packet */
 227         struct {
 228             u_int32_t hello_ifid;
 229             union {
 230                 u_int8_t pri;
 231                 u_int32_t opt;
 232             } hello_priandopt;
 233 #define hello_priority  hello_priandopt.pri
 234 #define hello_options   hello_priandopt.opt
 235             u_int16_t hello_helloint;
 236             u_int16_t hello_deadint;
 237             rtrid_t hello_dr;
 238             rtrid_t hello_bdr;
 239             rtrid_t hello_neighbor[1]; /* may repeat    */
 240         } un_hello;
 241
 242         /* Database Description packet */
 243         struct {
 244             u_int32_t db_options;
 245             u_int16_t db_mtu;
 246             u_int8_t db_mbz;
 247             u_int8_t db_flags;
 248             u_int32_t db_seq;
 249             struct lsa_hdr db_lshdr[1]; /* may repeat   */
 250         } un_db;
 251
 252         /* Link State Request */
 253         struct lsr {
 254             u_int16_t ls_mbz;
 255             u_int16_t ls_type;
 256             rtrid_t ls_stateid;
 257             rtrid_t ls_router;
 258         } un_lsr[1];            /* may repeat   */
 259
 260         /* Link State Update */
 261         struct {
 262             u_int32_t lsu_count;
 263             struct lsa lsu_lsa[1]; /* may repeat        */
 264         } un_lsu;
 265
 266         /* Link State Acknowledgement */
 267         struct {
 268             struct lsa_hdr lsa_lshdr[1]; /* may repeat  */
 269         } un_lsa ;
 270     } ospf6_un ;
 271 };
 272
 273 #define ospf6_hello     ospf6_un.un_hello
 274 #define ospf6_db        ospf6_un.un_db
 275 #define ospf6_lsr       ospf6_un.un_lsr
 276 #define ospf6_lsu       ospf6_un.un_lsu
 277 #define ospf6_lsa       ospf6_un.un_lsa
 278