1 /* @(#) $Header: /tcpdump/master/tcpdump/ospf.h,v 1.16.2.2 2006/12/13 08:24:27 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_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_SIMPLE_LEN 8 /* max length of simple authentication */ 52 #define OSPF_AUTH_MD5 2 /* MD5 authentication */ 53 #define OSPF_AUTH_MD5_LEN 16 /* length of MD5 authentication */ 54 55 /* db_flags */ 56 #define OSPF_DB_INIT 0x04 /* */ 57 #define OSPF_DB_MORE 0x02 58 #define OSPF_DB_MASTER 0x01 59 60 /* ls_type */ 61 #define LS_TYPE_ROUTER 1 /* router link */ 62 #define LS_TYPE_NETWORK 2 /* network link */ 63 #define LS_TYPE_SUM_IP 3 /* summary link */ 64 #define LS_TYPE_SUM_ABR 4 /* summary area link */ 65 #define LS_TYPE_ASE 5 /* ASE */ 66 #define LS_TYPE_GROUP 6 /* Group membership (multicast */ 67 /* extensions 23 July 1991) */ 68 #define LS_TYPE_NSSA 7 /* rfc3101 - Not so Stubby Areas */ 69 #define LS_TYPE_OPAQUE_LL 9 /* rfc2370 - Opaque Link Local */ 70 #define LS_TYPE_OPAQUE_AL 10 /* rfc2370 - Opaque Link Local */ 71 #define LS_TYPE_OPAQUE_DW 11 /* rfc2370 - Opaque Domain Wide */ 72 73 #define LS_OPAQUE_TYPE_TE 1 /* rfc3630 */ 74 #define LS_OPAQUE_TYPE_GRACE 3 /* rfc3623 */ 75 #define LS_OPAQUE_TYPE_RI 4 /* draft-ietf-ospf-cap-03 */ 76 77 #define LS_OPAQUE_TE_TLV_ROUTER 1 /* rfc3630 */ 78 #define LS_OPAQUE_TE_TLV_LINK 2 /* rfc3630 */ 79 80 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE 1 /* rfc3630 */ 81 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID 2 /* rfc3630 */ 82 #define LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP 3 /* rfc3630 */ 83 #define LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP 4 /* rfc3630 */ 84 #define LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC 5 /* rfc3630 */ 85 #define LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW 6 /* rfc3630 */ 86 #define LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW 7 /* rfc3630 */ 87 #define LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW 8 /* rfc3630 */ 88 #define LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP 9 /* rfc3630 */ 89 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID 11 /* draft-ietf-ccamp-ospf-gmpls-extensions */ 90 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE 14 /* draft-ietf-ccamp-ospf-gmpls-extensions */ 91 #define LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR 15 /* draft-ietf-ccamp-ospf-gmpls-extensions */ 92 #define LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP 16 /* draft-ietf-ccamp-ospf-gmpls-extensions */ 93 #define LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS 17 /* rfc4124 */ 94 95 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP 1 /* rfc3630 */ 96 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA 2 /* rfc3630 */ 97 98 #define LS_OPAQUE_GRACE_TLV_PERIOD 1 /* rfc3623 */ 99 #define LS_OPAQUE_GRACE_TLV_REASON 2 /* rfc3623 */ 100 #define LS_OPAQUE_GRACE_TLV_INT_ADDRESS 3 /* rfc3623 */ 101 102 #define LS_OPAQUE_GRACE_TLV_REASON_UNKNOWN 0 /* rfc3623 */ 103 #define LS_OPAQUE_GRACE_TLV_REASON_SW_RESTART 1 /* rfc3623 */ 104 #define LS_OPAQUE_GRACE_TLV_REASON_SW_UPGRADE 2 /* rfc3623 */ 105 #define LS_OPAQUE_GRACE_TLV_REASON_CP_SWITCH 3 /* rfc3623 */ 106 107 #define LS_OPAQUE_RI_TLV_CAP 1 /* draft-ietf-ospf-cap-03 */ 108 109 /************************************************* 110 * 111 * is the above a bug in the documentation? 112 * 113 *************************************************/ 114 115 116 /* rla_link.link_type */ 117 #define RLA_TYPE_ROUTER 1 /* point-to-point to another router */ 118 #define RLA_TYPE_TRANSIT 2 /* connection to transit network */ 119 #define RLA_TYPE_STUB 3 /* connection to stub network */ 120 #define RLA_TYPE_VIRTUAL 4 /* virtual link */ 121 122 /* rla_flags */ 123 #define RLA_FLAG_B 0x01 124 #define RLA_FLAG_E 0x02 125 #define RLA_FLAG_W1 0x04 126 #define RLA_FLAG_W2 0x08 127 128 /* sla_tosmetric breakdown */ 129 #define SLA_MASK_TOS 0x7f000000 130 #define SLA_MASK_METRIC 0x00ffffff 131 #define SLA_SHIFT_TOS 24 132 133 /* asla_tosmetric breakdown */ 134 #define ASLA_FLAG_EXTERNAL 0x80000000 135 #define ASLA_MASK_TOS 0x7f000000 136 #define ASLA_SHIFT_TOS 24 137 #define ASLA_MASK_METRIC 0x00ffffff 138 139 /* multicast vertex type */ 140 #define MCLA_VERTEX_ROUTER 1 141 #define MCLA_VERTEX_NETWORK 2 142 143 /* link state advertisement header */ 144 struct lsa_hdr { 145 u_int16_t ls_age; 146 u_int8_t ls_options; 147 u_int8_t ls_type; 148 union { 149 struct in_addr lsa_id; 150 struct { /* opaque LSAs change the LSA-ID field */ 151 u_int8_t opaque_type; 152 u_int8_t opaque_id[3]; 153 } opaque_field; 154 } un_lsa_id; 155 struct in_addr ls_router; 156 u_int32_t ls_seq; 157 u_int16_t ls_chksum; 158 u_int16_t ls_length; 159 }; 160 161 /* link state advertisement */ 162 struct lsa { 163 struct lsa_hdr ls_hdr; 164 165 /* Link state types */ 166 union { 167 /* Router links advertisements */ 168 struct { 169 u_int8_t rla_flags; 170 u_int8_t rla_zero[1]; 171 u_int16_t rla_count; 172 struct rlalink { 173 struct in_addr link_id; 174 struct in_addr link_data; 175 u_int8_t link_type; 176 u_int8_t link_toscount; 177 u_int16_t link_tos0metric; 178 } rla_link[1]; /* may repeat */ 179 } un_rla; 180 181 /* Network links advertisements */ 182 struct { 183 struct in_addr nla_mask; 184 struct in_addr nla_router[1]; /* may repeat */ 185 } un_nla; 186 187 /* Summary links advertisements */ 188 struct { 189 struct in_addr sla_mask; 190 u_int32_t sla_tosmetric[1]; /* may repeat */ 191 } un_sla; 192 193 /* AS external links advertisements */ 194 struct { 195 struct in_addr asla_mask; 196 struct aslametric { 197 u_int32_t asla_tosmetric; 198 struct in_addr asla_forward; 199 struct in_addr asla_tag; 200 } asla_metric[1]; /* may repeat */ 201 } un_asla; 202 203 /* Multicast group membership */ 204 struct mcla { 205 u_int32_t mcla_vtype; 206 struct in_addr mcla_vid; 207 } un_mcla[1]; 208 209 /* Opaque TE LSA */ 210 struct { 211 u_int16_t type; 212 u_int16_t length; 213 u_int8_t data[1]; /* may repeat */ 214 } un_te_lsa_tlv; 215 216 /* Opaque Grace LSA */ 217 struct { 218 u_int16_t type; 219 u_int16_t length; 220 u_int8_t data[1]; /* may repeat */ 221 } un_grace_tlv; 222 223 /* Opaque Router information LSA */ 224 struct { 225 u_int16_t type; 226 u_int16_t length; 227 u_int8_t data[1]; /* may repeat */ 228 } un_ri_tlv; 229 230 /* Unknown LSA */ 231 struct unknown { 232 u_int8_t data[1]; /* may repeat */ 233 } un_unknown[1]; 234 235 } lsa_un; 236 }; 237 238 239 /* 240 * TOS metric struct (will be 0 or more in router links update) 241 */ 242 struct tos_metric { 243 u_int8_t tos_type; 244 u_int8_t tos_zero; 245 u_int16_t tos_metric; 246 }; 247 248 #define OSPF_AUTH_SIZE 8 249 250 /* 251 * the main header 252 */ 253 struct ospfhdr { 254 u_int8_t ospf_version; 255 u_int8_t ospf_type; 256 u_int16_t ospf_len; 257 struct in_addr ospf_routerid; 258 struct in_addr ospf_areaid; 259 u_int16_t ospf_chksum; 260 u_int16_t ospf_authtype; 261 u_int8_t ospf_authdata[OSPF_AUTH_SIZE]; 262 union { 263 264 /* Hello packet */ 265 struct { 266 struct in_addr hello_mask; 267 u_int16_t hello_helloint; 268 u_int8_t hello_options; 269 u_int8_t hello_priority; 270 u_int32_t hello_deadint; 271 struct in_addr hello_dr; 272 struct in_addr hello_bdr; 273 struct in_addr hello_neighbor[1]; /* may repeat */ 274 } un_hello; 275 276 /* Database Description packet */ 277 struct { 278 u_int8_t db_zero[2]; 279 u_int8_t db_options; 280 u_int8_t db_flags; 281 u_int32_t db_seq; 282 struct lsa_hdr db_lshdr[1]; /* may repeat */ 283 } un_db; 284 285 /* Link State Request */ 286 struct lsr { 287 u_int8_t ls_type[4]; 288 union { 289 struct in_addr ls_stateid; 290 struct { /* opaque LSAs change the LSA-ID field */ 291 u_int8_t opaque_type; 292 u_int8_t opaque_id[3]; 293 } opaque_field; 294 } un_ls_stateid; 295 struct in_addr ls_router; 296 } un_lsr[1]; /* may repeat */ 297 298 /* Link State Update */ 299 struct { 300 u_int32_t lsu_count; 301 struct lsa lsu_lsa[1]; /* may repeat */ 302 } un_lsu; 303 304 /* Link State Acknowledgement */ 305 struct { 306 struct lsa_hdr lsa_lshdr[1]; /* may repeat */ 307 } un_lsa ; 308 } ospf_un ; 309 }; 310 311 #define ospf_hello ospf_un.un_hello 312 #define ospf_db ospf_un.un_db 313 #define ospf_lsr ospf_un.un_lsr 314 #define ospf_lsu ospf_un.un_lsu 315 #define ospf_lsa ospf_un.un_lsa 316 317
