contrib/tcpdump-3.8.3/ospf.h

   1 /* @(#) $Header: /tcpdump/master/tcpdump/ospf.h,v 1.11 2003/10/22 17:08:46 hannes 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_DD            2       /* Database Description */
  27 #define OSPF_TYPE_LS_REQ        3       /* Link State Request */
  28 #define OSPF_TYPE_LS_UPDATE     4       /* Link State Update */
  29 #define OSPF_TYPE_LS_ACK        5       /* Link State Ack */
  30
  31 /* Options field
  32  *
  33  * +------------------------------------+
  34  * | * | O | DC | EA | N/P | MC | E | T |
  35  * +------------------------------------+
  36  *
  37  */
  38
  39 #define OSPF_OPTION_T   0x01    /* T bit: TOS support   */
  40 #define OSPF_OPTION_E   0x02    /* E bit: External routes advertised    */
  41 #define OSPF_OPTION_MC  0x04    /* MC bit: Multicast capable */
  42 #define OSPF_OPTION_NP  0x08    /* N/P bit: NSSA capable */
  43 #define OSPF_OPTION_EA  0x10    /* EA bit: External Attribute capable */
  44 #define OSPF_OPTION_DC  0x20    /* DC bit: Demand circuit capable */
  45 #define OSPF_OPTION_O   0x40    /* O bit: Opaque LSA capable */
  46
  47 /* ospf_authtype        */
  48 #define OSPF_AUTH_NONE          0       /* No auth-data */
  49 #define OSPF_AUTH_SIMPLE        1       /* Simple password */
  50 #define OSPF_AUTH_MD5           2       /* MD5 authentication */
  51 #define OSPF_AUTH_MD5_LEN       16      /* length of MD5 authentication */
  52
  53 /* db_flags     */
  54 #define OSPF_DB_INIT            0x04        /*  */
  55 #define OSPF_DB_MORE            0x02
  56 #define OSPF_DB_MASTER          0x01
  57
  58 /* ls_type      */
  59 #define LS_TYPE_ROUTER          1   /* router link */
  60 #define LS_TYPE_NETWORK         2   /* network link */
  61 #define LS_TYPE_SUM_IP          3   /* summary link */
  62 #define LS_TYPE_SUM_ABR         4   /* summary area link */
  63 #define LS_TYPE_ASE             5   /* ASE  */
  64 #define LS_TYPE_GROUP           6   /* Group membership (multicast */
  65                                     /* extensions 23 July 1991) */
  66 #define LS_TYPE_NSSA            7   /* rfc1587 - Not so Stubby Areas */
  67 #define LS_TYPE_OPAQUE_LL       9   /* rfc2370 - Opaque Link Local */
  68 #define LS_TYPE_OPAQUE_AL      10   /* rfc2370 - Opaque Link Local */
  69 #define LS_TYPE_OPAQUE_DW      11   /* rfc2370 - Opaque Domain Wide */
  70
  71 #define LS_OPAQUE_TYPE_TE       1   /* rfc3630 */
  72 #define LS_OPAQUE_TYPE_GRACE    3   /* draft-ietf-ospf-hitless-restart */
  73
  74 #define LS_OPAQUE_TE_TLV_ROUTER 1   /* rfc3630 */
  75 #define LS_OPAQUE_TE_TLV_LINK   2   /* rfc3630 */
  76
  77 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE             1 /* rfc3630 */
  78 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID               2 /* rfc3630 */
  79 #define LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP              3 /* rfc3630 */
  80 #define LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP             4 /* rfc3630 */
  81 #define LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC             5 /* rfc3630 */
  82 #define LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW                6 /* rfc3630 */
  83 #define LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW            7 /* rfc3630 */
  84 #define LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW              8 /* rfc3630 */
  85 #define LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP           9 /* rfc3630 */
  86 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID 11 /* draft-ietf-ccamp-ospf-gmpls-extensions */
  87 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE 14 /* draft-ietf-ccamp-ospf-gmpls-extensions */
  88 #define LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR    15 /* draft-ietf-ccamp-ospf-gmpls-extensions */
  89 #define LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP    16 /* draft-ietf-ccamp-ospf-gmpls-extensions */
  90
  91 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP        1  /* rfc3630 */
  92 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA         2  /* rfc3630 */
  93
  94 /*************************************************
  95  *
  96  * is the above a bug in the documentation?
  97  *
  98  *************************************************/
  99
 100
 101 /* rla_link.link_type   */
 102 #define RLA_TYPE_ROUTER         1   /* point-to-point to another router */
 103 #define RLA_TYPE_TRANSIT        2   /* connection to transit network    */
 104 #define RLA_TYPE_STUB           3   /* connection to stub network       */
 105 #define RLA_TYPE_VIRTUAL        4   /* virtual link                     */
 106
 107 /* rla_flags    */
 108 #define RLA_FLAG_B      0x01
 109 #define RLA_FLAG_E      0x02
 110 #define RLA_FLAG_W1     0x04
 111 #define RLA_FLAG_W2     0x08
 112
 113 /* sla_tosmetric breakdown      */
 114 #define SLA_MASK_TOS            0x7f000000
 115 #define SLA_MASK_METRIC         0x00ffffff
 116 #define SLA_SHIFT_TOS           24
 117
 118 /* asla_tosmetric breakdown     */
 119 #define ASLA_FLAG_EXTERNAL      0x80000000
 120 #define ASLA_MASK_TOS           0x7f000000
 121 #define ASLA_SHIFT_TOS          24
 122 #define ASLA_MASK_METRIC        0x00ffffff
 123
 124 /* multicast vertex type */
 125 #define MCLA_VERTEX_ROUTER      1
 126 #define MCLA_VERTEX_NETWORK     2
 127
 128 /* link state advertisement header */
 129 struct lsa_hdr {
 130     u_int16_t ls_age;
 131     u_int8_t ls_options;
 132     u_int8_t ls_type;
 133     union {
 134         struct in_addr lsa_id;
 135         struct { /* opaque LSAs change the LSA-ID field */
 136             u_int8_t opaque_type;
 137             u_int8_t opaque_id[3];
 138         } opaque_field;
 139     } un_lsa_id;
 140     struct in_addr ls_router;
 141     u_int32_t ls_seq;
 142     u_int16_t ls_chksum;
 143     u_int16_t ls_length;
 144 };
 145
 146 /* link state advertisement */
 147 struct lsa {
 148     struct lsa_hdr ls_hdr;
 149
 150     /* Link state types */
 151     union {
 152         /* Router links advertisements */
 153         struct {
 154             u_int8_t rla_flags;
 155             u_int8_t rla_zero[1];
 156             u_int16_t rla_count;
 157             struct rlalink {
 158                 struct in_addr link_id;
 159                 struct in_addr link_data;
 160                 u_int8_t link_type;
 161                 u_int8_t link_toscount;
 162                 u_int16_t link_tos0metric;
 163             } rla_link[1];              /* may repeat   */
 164         } un_rla;
 165
 166         /* Network links advertisements */
 167         struct {
 168             struct in_addr nla_mask;
 169             struct in_addr nla_router[1];       /* may repeat   */
 170         } un_nla;
 171
 172         /* Summary links advertisements */
 173         struct {
 174             struct in_addr sla_mask;
 175             u_int32_t sla_tosmetric[1]; /* may repeat   */
 176         } un_sla;
 177
 178         /* AS external links advertisements */
 179         struct {
 180             struct in_addr asla_mask;
 181             struct aslametric {
 182                 u_int32_t asla_tosmetric;
 183                 struct in_addr asla_forward;
 184                 struct in_addr asla_tag;
 185             } asla_metric[1];           /* may repeat   */
 186         } un_asla;
 187
 188         /* Multicast group membership */
 189         struct mcla {
 190             u_int32_t mcla_vtype;
 191             struct in_addr mcla_vid;
 192         } un_mcla[1];
 193
 194         /* Opaque TE LSA */
 195         struct {
 196             u_int16_t type;
 197             u_int16_t length;
 198             u_int8_t data[1]; /* may repeat   */
 199         } un_te_lsa_tlv;
 200
 201         /* Unknown LSA */
 202         struct unknown {
 203             u_int8_t data[1]; /* may repeat   */
 204         } un_unknown[1];
 205
 206     } lsa_un;
 207 };
 208
 209
 210 /*
 211  * TOS metric struct (will be 0 or more in router links update)
 212  */
 213 struct tos_metric {
 214     u_int8_t tos_type;
 215     u_int8_t tos_zero;
 216     u_int16_t tos_metric;
 217 };
 218
 219 #define OSPF_AUTH_SIZE  8
 220
 221 /*
 222  * the main header
 223  */
 224 struct ospfhdr {
 225     u_int8_t ospf_version;
 226     u_int8_t ospf_type;
 227     u_int16_t ospf_len;
 228     struct in_addr ospf_routerid;
 229     struct in_addr ospf_areaid;
 230     u_int16_t ospf_chksum;
 231     u_int16_t ospf_authtype;
 232     u_int8_t ospf_authdata[OSPF_AUTH_SIZE];
 233     union {
 234
 235         /* Hello packet */
 236         struct {
 237             struct in_addr hello_mask;
 238             u_int16_t hello_helloint;
 239             u_int8_t hello_options;
 240             u_int8_t hello_priority;
 241             u_int32_t hello_deadint;
 242             struct in_addr hello_dr;
 243             struct in_addr hello_bdr;
 244             struct in_addr hello_neighbor[1]; /* may repeat     */
 245         } un_hello;
 246
 247         /* Database Description packet */
 248         struct {
 249             u_int8_t db_zero[2];
 250             u_int8_t db_options;
 251             u_int8_t db_flags;
 252             u_int32_t db_seq;
 253             struct lsa_hdr db_lshdr[1]; /* may repeat   */
 254         } un_db;
 255
 256         /* Link State Request */
 257         struct lsr {
 258             u_int8_t ls_type[4];
 259             union {
 260                 struct in_addr ls_stateid;
 261                 struct { /* opaque LSAs change the LSA-ID field */
 262                     u_int8_t opaque_type;
 263                     u_int8_t opaque_id[3];
 264                 } opaque_field;
 265             } un_ls_stateid;
 266             struct in_addr ls_router;
 267         } un_lsr[1];            /* may repeat   */
 268
 269         /* Link State Update */
 270         struct {
 271             u_int32_t lsu_count;
 272             struct lsa lsu_lsa[1]; /* may repeat        */
 273         } un_lsu;
 274
 275         /* Link State Acknowledgement */
 276         struct {
 277             struct lsa_hdr lsa_lshdr[1]; /* may repeat  */
 278         } un_lsa ;
 279     } ospf_un ;
 280 };
 281
 282 #define ospf_hello      ospf_un.un_hello
 283 #define ospf_db         ospf_un.un_db
 284 #define ospf_lsr        ospf_un.un_lsr
 285 #define ospf_lsu        ospf_un.un_lsu
 286 #define ospf_lsa        ospf_un.un_lsa
 287