1 /* @(#) $Header: /tcpdump/master/tcpdump/ospf.h,v 1.11 2003/10/22 17:08:46 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 47 /* ospf_authtype */ 48 #define OSPF_AUTH_NONE 0 /* No auth-data */ 49 #define OSPF_AUTH_SIMPLE 1 /* Simple password */ 50 #define OSPF_AUTH_MD5 2 /* MD5 authentication */ 51 #define OSPF_AUTH_MD5_LEN 16 /* length of MD5 authentication */ 52 53 /* db_flags */ 54 #define OSPF_DB_INIT 0x04 /* */ 55 #define OSPF_DB_MORE 0x02 56 #define OSPF_DB_MASTER 0x01 57 58 /* ls_type */ 59 #define LS_TYPE_ROUTER 1 /* router link */ 60 #define LS_TYPE_NETWORK 2 /* network link */ 61 #define LS_TYPE_SUM_IP 3 /* summary link */ 62 #define LS_TYPE_SUM_ABR 4 /* summary area link */ 63 #define LS_TYPE_ASE 5 /* ASE */ 64 #define LS_TYPE_GROUP 6 /* Group membership (multicast */ 65 /* extensions 23 July 1991) */ 66 #define LS_TYPE_NSSA 7 /* rfc1587 - Not so Stubby Areas */ 67 #define LS_TYPE_OPAQUE_LL 9 /* rfc2370 - Opaque Link Local */ 68 #define LS_TYPE_OPAQUE_AL 10 /* rfc2370 - Opaque Link Local */ 69 #define LS_TYPE_OPAQUE_DW 11 /* rfc2370 - Opaque Domain Wide */ 70 71 #define LS_OPAQUE_TYPE_TE 1 /* rfc3630 */ 72 #define LS_OPAQUE_TYPE_GRACE 3 /* draft-ietf-ospf-hitless-restart */ 73 74 #define LS_OPAQUE_TE_TLV_ROUTER 1 /* rfc3630 */ 75 #define LS_OPAQUE_TE_TLV_LINK 2 /* rfc3630 */ 76 77 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE 1 /* rfc3630 */ 78 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID 2 /* rfc3630 */ 79 #define LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP 3 /* rfc3630 */ 80 #define LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP 4 /* rfc3630 */ 81 #define LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC 5 /* rfc3630 */ 82 #define LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW 6 /* rfc3630 */ 83 #define LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW 7 /* rfc3630 */ 84 #define LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW 8 /* rfc3630 */ 85 #define LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP 9 /* rfc3630 */ 86 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID 11 /* draft-ietf-ccamp-ospf-gmpls-extensions */ 87 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE 14 /* draft-ietf-ccamp-ospf-gmpls-extensions */ 88 #define LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR 15 /* draft-ietf-ccamp-ospf-gmpls-extensions */ 89 #define LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP 16 /* draft-ietf-ccamp-ospf-gmpls-extensions */ 90 91 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP 1 /* rfc3630 */ 92 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA 2 /* rfc3630 */ 93 94 /************************************************* 95 * 96 * is the above a bug in the documentation? 97 * 98 *************************************************/ 99 100 101 /* rla_link.link_type */ 102 #define RLA_TYPE_ROUTER 1 /* point-to-point to another router */ 103 #define RLA_TYPE_TRANSIT 2 /* connection to transit network */ 104 #define RLA_TYPE_STUB 3 /* connection to stub network */ 105 #define RLA_TYPE_VIRTUAL 4 /* virtual link */ 106 107 /* rla_flags */ 108 #define RLA_FLAG_B 0x01 109 #define RLA_FLAG_E 0x02 110 #define RLA_FLAG_W1 0x04 111 #define RLA_FLAG_W2 0x08 112 113 /* sla_tosmetric breakdown */ 114 #define SLA_MASK_TOS 0x7f000000 115 #define SLA_MASK_METRIC 0x00ffffff 116 #define SLA_SHIFT_TOS 24 117 118 /* asla_tosmetric breakdown */ 119 #define ASLA_FLAG_EXTERNAL 0x80000000 120 #define ASLA_MASK_TOS 0x7f000000 121 #define ASLA_SHIFT_TOS 24 122 #define ASLA_MASK_METRIC 0x00ffffff 123 124 /* multicast vertex type */ 125 #define MCLA_VERTEX_ROUTER 1 126 #define MCLA_VERTEX_NETWORK 2 127 128 /* link state advertisement header */ 129 struct lsa_hdr { 130 u_int16_t ls_age; 131 u_int8_t ls_options; 132 u_int8_t ls_type; 133 union { 134 struct in_addr lsa_id; 135 struct { /* opaque LSAs change the LSA-ID field */ 136 u_int8_t opaque_type; 137 u_int8_t opaque_id[3]; 138 } opaque_field; 139 } un_lsa_id; 140 struct in_addr ls_router; 141 u_int32_t ls_seq; 142 u_int16_t ls_chksum; 143 u_int16_t ls_length; 144 }; 145 146 /* link state advertisement */ 147 struct lsa { 148 struct lsa_hdr ls_hdr; 149 150 /* Link state types */ 151 union { 152 /* Router links advertisements */ 153 struct { 154 u_int8_t rla_flags; 155 u_int8_t rla_zero[1]; 156 u_int16_t rla_count; 157 struct rlalink { 158 struct in_addr link_id; 159 struct in_addr link_data; 160 u_int8_t link_type; 161 u_int8_t link_toscount; 162 u_int16_t link_tos0metric; 163 } rla_link[1]; /* may repeat */ 164 } un_rla; 165 166 /* Network links advertisements */ 167 struct { 168 struct in_addr nla_mask; 169 struct in_addr nla_router[1]; /* may repeat */ 170 } un_nla; 171 172 /* Summary links advertisements */ 173 struct { 174 struct in_addr sla_mask; 175 u_int32_t sla_tosmetric[1]; /* may repeat */ 176 } un_sla; 177 178 /* AS external links advertisements */ 179 struct { 180 struct in_addr asla_mask; 181 struct aslametric { 182 u_int32_t asla_tosmetric; 183 struct in_addr asla_forward; 184 struct in_addr asla_tag; 185 } asla_metric[1]; /* may repeat */ 186 } un_asla; 187 188 /* Multicast group membership */ 189 struct mcla { 190 u_int32_t mcla_vtype; 191 struct in_addr mcla_vid; 192 } un_mcla[1]; 193 194 /* Opaque TE LSA */ 195 struct { 196 u_int16_t type; 197 u_int16_t length; 198 u_int8_t data[1]; /* may repeat */ 199 } un_te_lsa_tlv; 200 201 /* Unknown LSA */ 202 struct unknown { 203 u_int8_t data[1]; /* may repeat */ 204 } un_unknown[1]; 205 206 } lsa_un; 207 }; 208 209 210 /* 211 * TOS metric struct (will be 0 or more in router links update) 212 */ 213 struct tos_metric { 214 u_int8_t tos_type; 215 u_int8_t tos_zero; 216 u_int16_t tos_metric; 217 }; 218 219 #define OSPF_AUTH_SIZE 8 220 221 /* 222 * the main header 223 */ 224 struct ospfhdr { 225 u_int8_t ospf_version; 226 u_int8_t ospf_type; 227 u_int16_t ospf_len; 228 struct in_addr ospf_routerid; 229 struct in_addr ospf_areaid; 230 u_int16_t ospf_chksum; 231 u_int16_t ospf_authtype; 232 u_int8_t ospf_authdata[OSPF_AUTH_SIZE]; 233 union { 234 235 /* Hello packet */ 236 struct { 237 struct in_addr hello_mask; 238 u_int16_t hello_helloint; 239 u_int8_t hello_options; 240 u_int8_t hello_priority; 241 u_int32_t hello_deadint; 242 struct in_addr hello_dr; 243 struct in_addr hello_bdr; 244 struct in_addr hello_neighbor[1]; /* may repeat */ 245 } un_hello; 246 247 /* Database Description packet */ 248 struct { 249 u_int8_t db_zero[2]; 250 u_int8_t db_options; 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_int8_t ls_type[4]; 259 union { 260 struct in_addr ls_stateid; 261 struct { /* opaque LSAs change the LSA-ID field */ 262 u_int8_t opaque_type; 263 u_int8_t opaque_id[3]; 264 } opaque_field; 265 } un_ls_stateid; 266 struct in_addr ls_router; 267 } un_lsr[1]; /* may repeat */ 268 269 /* Link State Update */ 270 struct { 271 u_int32_t lsu_count; 272 struct lsa lsu_lsa[1]; /* may repeat */ 273 } un_lsu; 274 275 /* Link State Acknowledgement */ 276 struct { 277 struct lsa_hdr lsa_lshdr[1]; /* may repeat */ 278 } un_lsa ; 279 } ospf_un ; 280 }; 281 282 #define ospf_hello ospf_un.un_hello 283 #define ospf_db ospf_un.un_db 284 #define ospf_lsr ospf_un.un_lsr 285 #define ospf_lsu ospf_un.un_lsu 286 #define ospf_lsa ospf_un.un_lsa 287 288