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 (at) 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 265 266
