contrib/tcpdump/ospf6.h

   1 /* @(#) $Header: /tcpdump/master/tcpdump/ospf6.h,v 1.7 2006-09-05 15:50:26 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_HELLO         1       /* Hello */
  25 #define OSPF_TYPE_DD            2       /* Database Description */
  26 #define OSPF_TYPE_LS_REQ        3       /* Link State Request */
  27 #define OSPF_TYPE_LS_UPDATE     4       /* Link State Update */
  28 #define OSPF_TYPE_LS_ACK        5       /* Link State Ack */
  29
  30 /* Options *_options    */
  31 #define OSPF6_OPTION_V6 0x01    /* V6 bit: A bit for peeping tom */
  32 #define OSPF6_OPTION_E  0x02    /* E bit: External routes advertised    */
  33 #define OSPF6_OPTION_MC 0x04    /* MC bit: Multicast capable */
  34 #define OSPF6_OPTION_N  0x08    /* N bit: For type-7 LSA */
  35 #define OSPF6_OPTION_R  0x10    /* R bit: Router bit */
  36 #define OSPF6_OPTION_DC 0x20    /* DC bit: Demand circuits */
  37
  38
  39 /* db_flags     */
  40 #define OSPF6_DB_INIT           0x04        /*  */
  41 #define OSPF6_DB_MORE           0x02
  42 #define OSPF6_DB_MASTER         0x01
  43
  44 /* ls_type      */
  45 #define LS_TYPE_ROUTER          1   /* router link */
  46 #define LS_TYPE_NETWORK         2   /* network link */
  47 #define LS_TYPE_INTER_AP        3   /* Inter-Area-Prefix */
  48 #define LS_TYPE_INTER_AR        4   /* Inter-Area-Router */
  49 #define LS_TYPE_ASE             5   /* ASE */
  50 #define LS_TYPE_GROUP           6   /* Group membership */
  51 #define LS_TYPE_NSSA            7   /* NSSA */
  52 #define LS_TYPE_LINK            8   /* Link LSA */
  53 #define LS_TYPE_INTRA_AP        9   /* Intra-Area-Prefix */
  54 #define LS_TYPE_INTRA_ATE       10  /* Intra-Area-TE */
  55 #define LS_TYPE_GRACE           11  /* Grace LSA */
  56 #define LS_TYPE_MASK            0x1fff
  57
  58 #define LS_SCOPE_LINKLOCAL      0x0000
  59 #define LS_SCOPE_AREA           0x2000
  60 #define LS_SCOPE_AS             0x4000
  61 #define LS_SCOPE_MASK           0x6000
  62 #define LS_SCOPE_U              0x8000
  63
  64 /* rla_link.link_type   */
  65 #define RLA_TYPE_ROUTER         1   /* point-to-point to another router */
  66 #define RLA_TYPE_TRANSIT        2   /* connection to transit network    */
  67 #define RLA_TYPE_VIRTUAL        4   /* virtual link                     */
  68
  69 /* rla_flags    */
  70 #define RLA_FLAG_B      0x01
  71 #define RLA_FLAG_E      0x02
  72 #define RLA_FLAG_V      0x04
  73 #define RLA_FLAG_W      0x08
  74 #define RLA_FLAG_N      0x10
  75
  76 /* lsa_prefix options */
  77 #define LSA_PREFIX_OPT_NU 0x01
  78 #define LSA_PREFIX_OPT_LA 0x02
  79 #define LSA_PREFIX_OPT_MC 0x04
  80 #define LSA_PREFIX_OPT_P  0x08
  81 #define LSA_PREFIX_OPT_DN 0x10
  82
  83 /* sla_tosmetric breakdown      */
  84 #define SLA_MASK_TOS            0x7f000000
  85 #define SLA_MASK_METRIC         0x00ffffff
  86 #define SLA_SHIFT_TOS           24
  87
  88 /* asla_metric */
  89 #define ASLA_FLAG_FWDADDR       0x02000000
  90 #define ASLA_FLAG_ROUTETAG      0x01000000
  91 #define ASLA_MASK_METRIC        0x00ffffff
  92
  93 typedef u_int32_t rtrid_t;
  94
  95 /* link state advertisement header */
  96 struct lsa6_hdr {
  97     u_int16_t ls_age;
  98     u_int16_t ls_type;
  99     rtrid_t ls_stateid;
 100     rtrid_t ls_router;
 101     u_int32_t ls_seq;
 102     u_int16_t ls_chksum;
 103     u_int16_t ls_length;
 104 };
 105
 106 struct lsa6_prefix {
 107     u_int8_t lsa_p_len;
 108     u_int8_t lsa_p_opt;
 109     u_int16_t lsa_p_metric;
 110     u_int8_t lsa_p_prefix[4];
 111 };
 112
 113 /* link state advertisement */
 114 struct lsa6 {
 115     struct lsa6_hdr ls_hdr;
 116
 117     /* Link state types */
 118     union {
 119         /* Router links advertisements */
 120         struct {
 121             union {
 122                 u_int8_t flg;
 123                 u_int32_t opt;
 124             } rla_flgandopt;
 125 #define rla_flags       rla_flgandopt.flg
 126 #define rla_options     rla_flgandopt.opt
 127             struct rlalink6 {
 128                 u_int8_t link_type;
 129                 u_int8_t link_zero[1];
 130                 u_int16_t link_metric;
 131                 u_int32_t link_ifid;
 132                 u_int32_t link_nifid;
 133                 rtrid_t link_nrtid;
 134             } rla_link[1];              /* may repeat   */
 135         } un_rla;
 136
 137         /* Network links advertisements */
 138         struct {
 139             u_int32_t nla_options;
 140             rtrid_t nla_router[1];      /* may repeat   */
 141         } un_nla;
 142
 143         /* Inter Area Prefix LSA */
 144         struct {
 145             u_int32_t inter_ap_metric;
 146             struct lsa6_prefix inter_ap_prefix[1];
 147         } un_inter_ap;
 148
 149         /* AS external links advertisements */
 150         struct {
 151             u_int32_t asla_metric;
 152             struct lsa6_prefix asla_prefix[1];
 153             /* some optional fields follow */
 154         } un_asla;
 155
 156 #if 0
 157         /* Summary links advertisements */
 158         struct {
 159             struct in_addr sla_mask;
 160             u_int32_t sla_tosmetric[1]; /* may repeat   */
 161         } un_sla;
 162
 163         /* Multicast group membership */
 164         struct mcla {
 165             u_int32_t mcla_vtype;
 166             struct in_addr mcla_vid;
 167         } un_mcla[1];
 168 #endif
 169
 170         /* Type 7 LSA */
 171
 172         /* Link LSA */
 173         struct llsa {
 174             union {
 175                 u_int8_t pri;
 176                 u_int32_t opt;
 177             } llsa_priandopt;
 178 #define llsa_priority   llsa_priandopt.pri
 179 #define llsa_options    llsa_priandopt.opt
 180             struct in6_addr llsa_lladdr;
 181             u_int32_t llsa_nprefix;
 182             struct lsa6_prefix llsa_prefix[1];
 183         } un_llsa;
 184
 185         /* Intra-Area-Prefix */
 186         struct {
 187             u_int16_t intra_ap_nprefix;
 188             u_int16_t intra_ap_lstype;
 189             rtrid_t intra_ap_lsid;
 190             rtrid_t intra_ap_rtid;
 191             struct lsa6_prefix intra_ap_prefix[1];
 192         } un_intra_ap;
 193     } lsa_un;
 194 };
 195
 196
 197 #define OSPF_AUTH_SIZE  8
 198
 199 /*
 200  * the main header
 201  */
 202 struct ospf6hdr {
 203     u_int8_t ospf6_version;
 204     u_int8_t ospf6_type;
 205     u_int16_t ospf6_len;
 206     rtrid_t ospf6_routerid;
 207     rtrid_t ospf6_areaid;
 208     u_int16_t ospf6_chksum;
 209     u_int8_t ospf6_instanceid;
 210     u_int8_t ospf6_rsvd;
 211     union {
 212
 213         /* Hello packet */
 214         struct {
 215             u_int32_t hello_ifid;
 216             union {
 217                 u_int8_t pri;
 218                 u_int32_t opt;
 219             } hello_priandopt;
 220 #define hello_priority  hello_priandopt.pri
 221 #define hello_options   hello_priandopt.opt
 222             u_int16_t hello_helloint;
 223             u_int16_t hello_deadint;
 224             rtrid_t hello_dr;
 225             rtrid_t hello_bdr;
 226             rtrid_t hello_neighbor[1]; /* may repeat    */
 227         } un_hello;
 228
 229         /* Database Description packet */
 230         struct {
 231             u_int32_t db_options;
 232             u_int16_t db_mtu;
 233             u_int8_t db_mbz;
 234             u_int8_t db_flags;
 235             u_int32_t db_seq;
 236             struct lsa6_hdr db_lshdr[1]; /* may repeat  */
 237         } un_db;
 238
 239         /* Link State Request */
 240         struct lsr6 {
 241             u_int16_t ls_mbz;
 242             u_int16_t ls_type;
 243             rtrid_t ls_stateid;
 244             rtrid_t ls_router;
 245         } un_lsr[1];            /* may repeat   */
 246
 247         /* Link State Update */
 248         struct {
 249             u_int32_t lsu_count;
 250             struct lsa6 lsu_lsa[1]; /* may repeat       */
 251         } un_lsu;
 252
 253         /* Link State Acknowledgement */
 254         struct {
 255             struct lsa6_hdr lsa_lshdr[1]; /* may repeat */
 256         } un_lsa ;
 257     } ospf6_un ;
 258 };
 259
 260 #define ospf6_hello     ospf6_un.un_hello
 261 #define ospf6_db        ospf6_un.un_db
 262 #define ospf6_lsr       ospf6_un.un_lsr
 263 #define ospf6_lsu       ospf6_un.un_lsu
 264 #define ospf6_lsa       ospf6_un.un_lsa
 265