1 /* $OpenBSD: ospf6.h,v 1.1 2000/04/26 21:35:39 jakob Exp $ */ 2 3 /* 4 * Copyright (c) 1991, 1993, 1994, 1995, 1996, 1997 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that: (1) source code distributions 9 * retain the above copyright notice and this paragraph in its entirety, (2) 10 * distributions including binary code include the above copyright notice and 11 * this paragraph in its entirety in the documentation or other materials 12 * provided with the distribution, and (3) all advertising materials mentioning 13 * features or use of this software display the following acknowledgement: 14 * ``This product includes software developed by the University of California, 15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 16 * the University nor the names of its contributors may be used to endorse 17 * or promote products derived from this software without specific prior 18 * written permission. 19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 22 * 23 * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu) 24 */ 25 #define OSPF_TYPE_UMD 0 /* UMd's special monitoring packets */ 26 #define OSPF_TYPE_HELLO 1 /* Hello */ 27 #define OSPF_TYPE_DB 2 /* Database Description */ 28 #define OSPF_TYPE_LSR 3 /* Link State Request */ 29 #define OSPF_TYPE_LSU 4 /* Link State Update */ 30 #define OSPF_TYPE_LSA 5 /* Link State Ack */ 31 #define OSPF_TYPE_MAX 6 32 33 /* Options *_options */ 34 #define OSPF6_OPTION_V6 0x01 /* V6 bit: A bit for peeping tom */ 35 #define OSPF6_OPTION_E 0x02 /* E bit: External routes advertised */ 36 #define OSPF6_OPTION_MC 0x04 /* MC bit: Multicast capable */ 37 #define OSPF6_OPTION_N 0x08 /* N bit: For type-7 LSA */ 38 #define OSPF6_OPTION_R 0x10 /* R bit: Router bit */ 39 #define OSPF6_OPTION_DC 0x20 /* DC bit: Demand circuits */ 40 41 42 /* db_flags */ 43 #define OSPF6_DB_INIT 0x04 /* */ 44 #define OSPF6_DB_MORE 0x02 45 #define OSPF6_DB_MASTER 0x01 46 47 /* ls_type */ 48 #define LS_TYPE_ROUTER 1 /* router link */ 49 #define LS_TYPE_NETWORK 2 /* network link */ 50 #define LS_TYPE_INTER_AP 3 /* Inter-Area-Prefix */ 51 #define LS_TYPE_INTER_AR 4 /* Inter-Area-Router */ 52 #define LS_TYPE_ASE 5 /* ASE */ 53 #define LS_TYPE_GROUP 6 /* Group membership */ 54 #define LS_TYPE_TYPE7 7 /* Type 7 LSA */ 55 #define LS_TYPE_LINK 8 /* Link LSA */ 56 #define LS_TYPE_INTRA_AP 9 /* Intra-Area-Prefix */ 57 #define LS_TYPE_MAX 10 58 #define LS_TYPE_MASK 0x1fff 59 60 #define LS_SCOPE_LINKLOCAL 0x0000 61 #define LS_SCOPE_AREA 0x2000 62 #define LS_SCOPE_AS 0x4000 63 #define LS_SCOPE_MASK 0x6000 64 65 /************************************************* 66 * 67 * is the above a bug in the documentation? 68 * 69 *************************************************/ 70 71 72 /* rla_link.link_type */ 73 #define RLA_TYPE_ROUTER 1 /* point-to-point to another router */ 74 #define RLA_TYPE_TRANSIT 2 /* connection to transit network */ 75 #define RLA_TYPE_VIRTUAL 4 /* virtual link */ 76 77 /* rla_flags */ 78 #define RLA_FLAG_B 0x01 79 #define RLA_FLAG_E 0x02 80 #define RLA_FLAG_V 0x04 81 #define RLA_FLAG_W 0x08 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_tosmetric breakdown */ 89 #define ASLA_FLAG_EXTERNAL 0x80000000 90 #define ASLA_MASK_TOS 0x7f000000 91 #define ASLA_SHIFT_TOS 24 92 #define ASLA_MASK_METRIC 0x00ffffff 93 94 /* multicast vertex type */ 95 #define MCLA_VERTEX_ROUTER 1 96 #define MCLA_VERTEX_NETWORK 2 97 98 typedef u_int32_t rtrid_t; 99 100 /* link state advertisement header */ 101 struct lsa_hdr { 102 u_int16_t ls_age; 103 u_int16_t ls_type; 104 rtrid_t ls_stateid; 105 rtrid_t ls_router; 106 u_int32_t ls_seq; 107 u_int16_t ls_chksum; 108 u_int16_t ls_length; 109 } ; 110 111 struct lsa_prefix { 112 u_int8_t lsa_p_len; 113 u_int8_t lsa_p_opt; 114 u_int16_t lsa_p_mbz; 115 u_int8_t lsa_p_prefix[4]; 116 }; 117 118 /* link state advertisement */ 119 struct lsa { 120 struct lsa_hdr ls_hdr; 121 122 /* Link state types */ 123 union { 124 /* Router links advertisements */ 125 struct { 126 union { 127 u_int8_t flg; 128 u_int32_t opt; 129 } rla_flgandopt; 130 #define rla_flags rla_flgandopt.flg 131 #define rla_options rla_flgandopt.opt 132 struct rlalink { 133 u_int8_t link_type; 134 u_int8_t link_zero[1]; 135 u_int16_t link_metric; 136 u_int32_t link_ifid; 137 u_int32_t link_nifid; 138 rtrid_t link_nrtid; 139 } rla_link[1]; /* may repeat */ 140 } un_rla; 141 142 /* Network links advertisements */ 143 struct { 144 u_int32_t nla_options; 145 rtrid_t nla_router[1]; /* may repeat */ 146 } un_nla; 147 148 /* Inter Area Prefix LSA */ 149 struct { 150 u_int32_t inter_ap_metric; 151 struct lsa_prefix inter_ap_prefix[1]; 152 } un_inter_ap; 153 154 #if 0 155 /* Summary links advertisements */ 156 struct { 157 struct in_addr sla_mask; 158 u_int32_t sla_tosmetric[1]; /* may repeat */ 159 } un_sla; 160 161 /* AS external links advertisements */ 162 struct { 163 struct in_addr asla_mask; 164 struct aslametric { 165 u_int32_t asla_tosmetric; 166 struct in_addr asla_forward; 167 struct in_addr asla_tag; 168 } asla_metric[1]; /* may repeat */ 169 } un_asla; 170 171 /* Multicast group membership */ 172 struct mcla { 173 u_int32_t mcla_vtype; 174 struct in_addr mcla_vid; 175 } un_mcla[1]; 176 #endif 177 178 /* Type 7 LSA */ 179 180 /* Link LSA */ 181 struct llsa { 182 union { 183 u_int8_t pri; 184 u_int32_t opt; 185 } llsa_priandopt; 186 #define llsa_priority llsa_priandopt.pri 187 #define llsa_options llsa_priandopt.opt 188 struct in6_addr llsa_lladdr; 189 u_int32_t llsa_nprefix; 190 struct lsa_prefix llsa_prefix[1]; 191 } un_llsa; 192 193 /* Intra-Area-Prefix */ 194 struct { 195 u_int16_t intra_ap_nprefix; 196 u_int16_t intra_ap_lstype; 197 rtrid_t intra_ap_lsid; 198 rtrid_t intra_ap_rtid; 199 struct lsa_prefix intra_ap_prefix[1]; 200 } un_intra_ap; 201 } lsa_un; 202 } ; 203 204 205 /* 206 * TOS metric struct (will be 0 or more in router links update) 207 */ 208 struct tos_metric { 209 u_int8_t tos_type; 210 u_int8_t tos_zero; 211 u_int16_t tos_metric; 212 } ; 213 214 #define OSPF_AUTH_SIZE 8 215 216 /* 217 * the main header 218 */ 219 struct ospf6hdr { 220 u_int8_t ospf6_version; 221 u_int8_t ospf6_type; 222 u_int16_t ospf6_len; 223 rtrid_t ospf6_routerid; 224 rtrid_t ospf6_areaid; 225 u_int16_t ospf6_chksum; 226 u_int8_t ospf6_instanceid; 227 u_int8_t ospf6_rsvd; 228 union { 229 230 /* Hello packet */ 231 struct { 232 u_int32_t hello_ifid; 233 union { 234 u_int8_t pri; 235 u_int32_t opt; 236 } hello_priandopt; 237 #define hello_priority hello_priandopt.pri 238 #define hello_options hello_priandopt.opt 239 u_int16_t hello_helloint; 240 u_int16_t hello_deadint; 241 rtrid_t hello_dr; 242 rtrid_t hello_bdr; 243 rtrid_t hello_neighbor[1]; /* may repeat */ 244 } un_hello; 245 246 /* Database Description packet */ 247 struct { 248 u_int32_t db_options; 249 u_int16_t db_mtu; 250 u_int8_t db_mbz; 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_int16_t ls_mbz; 259 u_int16_t ls_type; 260 rtrid_t ls_stateid; 261 rtrid_t ls_router; 262 } un_lsr[1]; /* may repeat */ 263 264 /* Link State Update */ 265 struct { 266 u_int32_t lsu_count; 267 struct lsa lsu_lsa[1]; /* may repeat */ 268 } un_lsu; 269 270 /* Link State Acknowledgement */ 271 struct { 272 struct lsa_hdr lsa_lshdr[1]; /* may repeat */ 273 } un_lsa ; 274 } ospf6_un ; 275 } ; 276 277 #define ospf6_hello ospf6_un.un_hello 278 #define ospf6_db ospf6_un.un_db 279 #define ospf6_lsr ospf6_un.un_lsr 280 #define ospf6_lsu ospf6_un.un_lsu 281 #define ospf6_lsa ospf6_un.un_lsa 282 283