1 /* @(#) $Header: /tcpdump/master/tcpdump/ospf.h,v 1.16 2004/09/20 14:56:34 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 #define OSPF_OPTION_DN 0x80 /* DN bit: Up/Down Bit capable - draft-ietf-ospf-2547-dnbit-04 */ 47 48 /* ospf_authtype */ 49 #define OSPF_AUTH_NONE 0 /* No auth-data */ 50 #define OSPF_AUTH_SIMPLE 1 /* Simple password */ 51 #define OSPF_AUTH_MD5 2 /* MD5 authentication */ 52 #define OSPF_AUTH_MD5_LEN 16 /* length of MD5 authentication */ 53 54 /* db_flags */ 55 #define OSPF_DB_INIT 0x04 /* */ 56 #define OSPF_DB_MORE 0x02 57 #define OSPF_DB_MASTER 0x01 58 59 /* ls_type */ 60 #define LS_TYPE_ROUTER 1 /* router link */ 61 #define LS_TYPE_NETWORK 2 /* network link */ 62 #define LS_TYPE_SUM_IP 3 /* summary link */ 63 #define LS_TYPE_SUM_ABR 4 /* summary area link */ 64 #define LS_TYPE_ASE 5 /* ASE */ 65 #define LS_TYPE_GROUP 6 /* Group membership (multicast */ 66 /* extensions 23 July 1991) */ 67 #define LS_TYPE_NSSA 7 /* rfc3101 - Not so Stubby Areas */ 68 #define LS_TYPE_OPAQUE_LL 9 /* rfc2370 - Opaque Link Local */ 69 #define LS_TYPE_OPAQUE_AL 10 /* rfc2370 - Opaque Link Local */ 70 #define LS_TYPE_OPAQUE_DW 11 /* rfc2370 - Opaque Domain Wide */ 71 72 #define LS_OPAQUE_TYPE_TE 1 /* rfc3630 */ 73 #define LS_OPAQUE_TYPE_GRACE 3 /* rfc3623 */ 74 #define LS_OPAQUE_TYPE_RI 4 /* draft-ietf-ospf-cap-03 */ 75 76 #define LS_OPAQUE_TE_TLV_ROUTER 1 /* rfc3630 */ 77 #define LS_OPAQUE_TE_TLV_LINK 2 /* rfc3630 */ 78 79 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE 1 /* rfc3630 */ 80 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID 2 /* rfc3630 */ 81 #define LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP 3 /* rfc3630 */ 82 #define LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP 4 /* rfc3630 */ 83 #define LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC 5 /* rfc3630 */ 84 #define LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW 6 /* rfc3630 */ 85 #define LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW 7 /* rfc3630 */ 86 #define LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW 8 /* rfc3630 */ 87 #define LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP 9 /* rfc3630 */ 88 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID 11 /* draft-ietf-ccamp-ospf-gmpls-extensions */ 89 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE 14 /* draft-ietf-ccamp-ospf-gmpls-extensions */ 90 #define LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR 15 /* draft-ietf-ccamp-ospf-gmpls-extensions */ 91 #define LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP 16 /* draft-ietf-ccamp-ospf-gmpls-extensions */ 92 #define LS_OPAQUE_TE_LINK_SUBTLV_DIFFSERV_TE 17 /* draft-ietf-tewg-diff-te-proto-06 */ 93 94 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP 1 /* rfc3630 */ 95 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA 2 /* rfc3630 */ 96 97 #define LS_OPAQUE_GRACE_TLV_PERIOD 1 /* rfc3623 */ 98 #define LS_OPAQUE_GRACE_TLV_REASON 2 /* rfc3623 */ 99 #define LS_OPAQUE_GRACE_TLV_INT_ADDRESS 3 /* rfc3623 */ 100 101 #define LS_OPAQUE_GRACE_TLV_REASON_UNKNOWN 0 /* rfc3623 */ 102 #define LS_OPAQUE_GRACE_TLV_REASON_SW_RESTART 1 /* rfc3623 */ 103 #define LS_OPAQUE_GRACE_TLV_REASON_SW_UPGRADE 2 /* rfc3623 */ 104 #define LS_OPAQUE_GRACE_TLV_REASON_CP_SWITCH 3 /* rfc3623 */ 105 106 #define LS_OPAQUE_RI_TLV_CAP 1 /* draft-ietf-ospf-cap-03 */ 107 108 /************************************************* 109 * 110 * is the above a bug in the documentation? 111 * 112 *************************************************/ 113 114 115 /* rla_link.link_type */ 116 #define RLA_TYPE_ROUTER 1 /* point-to-point to another router */ 117 #define RLA_TYPE_TRANSIT 2 /* connection to transit network */ 118 #define RLA_TYPE_STUB 3 /* connection to stub network */ 119 #define RLA_TYPE_VIRTUAL 4 /* virtual link */ 120 121 /* rla_flags */ 122 #define RLA_FLAG_B 0x01 123 #define RLA_FLAG_E 0x02 124 #define RLA_FLAG_W1 0x04 125 #define RLA_FLAG_W2 0x08 126 127 /* sla_tosmetric breakdown */ 128 #define SLA_MASK_TOS 0x7f000000 129 #define SLA_MASK_METRIC 0x00ffffff 130 #define SLA_SHIFT_TOS 24 131 132 /* asla_tosmetric breakdown */ 133 #define ASLA_FLAG_EXTERNAL 0x80000000 134 #define ASLA_MASK_TOS 0x7f000000 135 #define ASLA_SHIFT_TOS 24 136 #define ASLA_MASK_METRIC 0x00ffffff 137 138 /* multicast vertex type */ 139 #define MCLA_VERTEX_ROUTER 1 140 #define MCLA_VERTEX_NETWORK 2 141 142 /* link state advertisement header */ 143 struct lsa_hdr { 144 u_int16_t ls_age; 145 u_int8_t ls_options; 146 u_int8_t ls_type; 147 union { 148 struct in_addr lsa_id; 149 struct { /* opaque LSAs change the LSA-ID field */ 150 u_int8_t opaque_type; 151 u_int8_t opaque_id[3]; 152 } opaque_field; 153 } un_lsa_id; 154 struct in_addr ls_router; 155 u_int32_t ls_seq; 156 u_int16_t ls_chksum; 157 u_int16_t ls_length; 158 }; 159 160 /* link state advertisement */ 161 struct lsa { 162 struct lsa_hdr ls_hdr; 163 164 /* Link state types */ 165 union { 166 /* Router links advertisements */ 167 struct { 168 u_int8_t rla_flags; 169 u_int8_t rla_zero[1]; 170 u_int16_t rla_count; 171 struct rlalink { 172 struct in_addr link_id; 173 struct in_addr link_data; 174 u_int8_t link_type; 175 u_int8_t link_toscount; 176 u_int16_t link_tos0metric; 177 } rla_link[1]; /* may repeat */ 178 } un_rla; 179 180 /* Network links advertisements */ 181 struct { 182 struct in_addr nla_mask; 183 struct in_addr nla_router[1]; /* may repeat */ 184 } un_nla; 185 186 /* Summary links advertisements */ 187 struct { 188 struct in_addr sla_mask; 189 u_int32_t sla_tosmetric[1]; /* may repeat */ 190 } un_sla; 191 192 /* AS external links advertisements */ 193 struct { 194 struct in_addr asla_mask; 195 struct aslametric { 196 u_int32_t asla_tosmetric; 197 struct in_addr asla_forward; 198 struct in_addr asla_tag; 199 } asla_metric[1]; /* may repeat */ 200 } un_asla; 201 202 /* Multicast group membership */ 203 struct mcla { 204 u_int32_t mcla_vtype; 205 struct in_addr mcla_vid; 206 } un_mcla[1]; 207 208 /* Opaque TE LSA */ 209 struct { 210 u_int16_t type; 211 u_int16_t length; 212 u_int8_t data[1]; /* may repeat */ 213 } un_te_lsa_tlv; 214 215 /* Opaque Grace LSA */ 216 struct { 217 u_int16_t type; 218 u_int16_t length; 219 u_int8_t data[1]; /* may repeat */ 220 } un_grace_tlv; 221 222 /* Opaque Router information LSA */ 223 struct { 224 u_int16_t type; 225 u_int16_t length; 226 u_int8_t data[1]; /* may repeat */ 227 } un_ri_tlv; 228 229 /* Unknown LSA */ 230 struct unknown { 231 u_int8_t data[1]; /* may repeat */ 232 } un_unknown[1]; 233 234 } lsa_un; 235 }; 236 237 238 /* 239 * TOS metric struct (will be 0 or more in router links update) 240 */ 241 struct tos_metric { 242 u_int8_t tos_type; 243 u_int8_t tos_zero; 244 u_int16_t tos_metric; 245 }; 246 247 #define OSPF_AUTH_SIZE 8 248 249 /* 250 * the main header 251 */ 252 struct ospfhdr { 253 u_int8_t ospf_version; 254 u_int8_t ospf_type; 255 u_int16_t ospf_len; 256 struct in_addr ospf_routerid; 257 struct in_addr ospf_areaid; 258 u_int16_t ospf_chksum; 259 u_int16_t ospf_authtype; 260 u_int8_t ospf_authdata[OSPF_AUTH_SIZE]; 261 union { 262 263 /* Hello packet */ 264 struct { 265 struct in_addr hello_mask; 266 u_int16_t hello_helloint; 267 u_int8_t hello_options; 268 u_int8_t hello_priority; 269 u_int32_t hello_deadint; 270 struct in_addr hello_dr; 271 struct in_addr hello_bdr; 272 struct in_addr hello_neighbor[1]; /* may repeat */ 273 } un_hello; 274 275 /* Database Description packet */ 276 struct { 277 u_int8_t db_zero[2]; 278 u_int8_t db_options; 279 u_int8_t db_flags; 280 u_int32_t db_seq; 281 struct lsa_hdr db_lshdr[1]; /* may repeat */ 282 } un_db; 283 284 /* Link State Request */ 285 struct lsr { 286 u_int8_t ls_type[4]; 287 union { 288 struct in_addr ls_stateid; 289 struct { /* opaque LSAs change the LSA-ID field */ 290 u_int8_t opaque_type; 291 u_int8_t opaque_id[3]; 292 } opaque_field; 293 } un_ls_stateid; 294 struct in_addr ls_router; 295 } un_lsr[1]; /* may repeat */ 296 297 /* Link State Update */ 298 struct { 299 u_int32_t lsu_count; 300 struct lsa lsu_lsa[1]; /* may repeat */ 301 } un_lsu; 302 303 /* Link State Acknowledgement */ 304 struct { 305 struct lsa_hdr lsa_lshdr[1]; /* may repeat */ 306 } un_lsa ; 307 } ospf_un ; 308 }; 309 310 #define ospf_hello ospf_un.un_hello 311 #define ospf_db ospf_un.un_db 312 #define ospf_lsr ospf_un.un_lsr 313 #define ospf_lsu ospf_un.un_lsu 314 #define ospf_lsa ospf_un.un_lsa 315 316