ospf6.h revision 127669
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 97typedef u_int32_t rtrid_t; 98 99/* link state advertisement header */ 100struct 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 110struct 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 */ 118struct 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 */ 204struct 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 */ 215struct 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 278 279