1190207Srpaulo/* @(#) $Header: /tcpdump/master/tcpdump/ospf.h,v 1.23 2007-10-08 07:53:21 hannes Exp $ (LBL) */ 217680Spst/* 339297Sfenner * Copyright (c) 1991, 1993, 1994, 1995, 1996, 1997 417680Spst * The Regents of the University of California. All rights reserved. 517680Spst * 617680Spst * Redistribution and use in source and binary forms, with or without 717680Spst * modification, are permitted provided that: (1) source code distributions 817680Spst * retain the above copyright notice and this paragraph in its entirety, (2) 917680Spst * distributions including binary code include the above copyright notice and 1017680Spst * this paragraph in its entirety in the documentation or other materials 1117680Spst * provided with the distribution, and (3) all advertising materials mentioning 1217680Spst * features or use of this software display the following acknowledgement: 1317680Spst * ``This product includes software developed by the University of California, 1417680Spst * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 1517680Spst * the University nor the names of its contributors may be used to endorse 1617680Spst * or promote products derived from this software without specific prior 1717680Spst * written permission. 1817680Spst * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 1917680Spst * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 2017680Spst * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 2117680Spst * 2217680Spst * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu) 2317680Spst */ 24127668Sbms#define OSPF_TYPE_UMD 0 /* UMd's special monitoring packets */ 25127668Sbms#define OSPF_TYPE_HELLO 1 /* Hello */ 26127668Sbms#define OSPF_TYPE_DD 2 /* Database Description */ 27127668Sbms#define OSPF_TYPE_LS_REQ 3 /* Link State Request */ 28127668Sbms#define OSPF_TYPE_LS_UPDATE 4 /* Link State Update */ 29127668Sbms#define OSPF_TYPE_LS_ACK 5 /* Link State Ack */ 3017680Spst 31127668Sbms/* Options field 32127668Sbms * 33127668Sbms * +------------------------------------+ 34190207Srpaulo * | DN | O | DC | L | N/P | MC | E | T | 35127668Sbms * +------------------------------------+ 36127668Sbms * 37127668Sbms */ 38127668Sbms 3917680Spst#define OSPF_OPTION_T 0x01 /* T bit: TOS support */ 4017680Spst#define OSPF_OPTION_E 0x02 /* E bit: External routes advertised */ 4117680Spst#define OSPF_OPTION_MC 0x04 /* MC bit: Multicast capable */ 42127668Sbms#define OSPF_OPTION_NP 0x08 /* N/P bit: NSSA capable */ 43127668Sbms#define OSPF_OPTION_EA 0x10 /* EA bit: External Attribute capable */ 44190207Srpaulo#define OSPF_OPTION_L 0x10 /* L bit: Packet contains LLS data block */ 45127668Sbms#define OSPF_OPTION_DC 0x20 /* DC bit: Demand circuit capable */ 46127668Sbms#define OSPF_OPTION_O 0x40 /* O bit: Opaque LSA capable */ 47146773Ssam#define OSPF_OPTION_DN 0x80 /* DN bit: Up/Down Bit capable - draft-ietf-ospf-2547-dnbit-04 */ 4817680Spst 4917680Spst/* ospf_authtype */ 5017680Spst#define OSPF_AUTH_NONE 0 /* No auth-data */ 5117680Spst#define OSPF_AUTH_SIMPLE 1 /* Simple password */ 52172683Smlaier#define OSPF_AUTH_SIMPLE_LEN 8 /* max length of simple authentication */ 5339297Sfenner#define OSPF_AUTH_MD5 2 /* MD5 authentication */ 54127668Sbms#define OSPF_AUTH_MD5_LEN 16 /* length of MD5 authentication */ 5517680Spst 5617680Spst/* db_flags */ 57190207Srpaulo#define OSPF_DB_INIT 0x04 5817680Spst#define OSPF_DB_MORE 0x02 59190207Srpaulo#define OSPF_DB_MASTER 0x01 60190207Srpaulo#define OSPF_DB_RESYNC 0x08 /* RFC4811 */ 6117680Spst 6217680Spst/* ls_type */ 6317680Spst#define LS_TYPE_ROUTER 1 /* router link */ 6417680Spst#define LS_TYPE_NETWORK 2 /* network link */ 6517680Spst#define LS_TYPE_SUM_IP 3 /* summary link */ 6617680Spst#define LS_TYPE_SUM_ABR 4 /* summary area link */ 6717680Spst#define LS_TYPE_ASE 5 /* ASE */ 6817680Spst#define LS_TYPE_GROUP 6 /* Group membership (multicast */ 6917680Spst /* extensions 23 July 1991) */ 70146773Ssam#define LS_TYPE_NSSA 7 /* rfc3101 - Not so Stubby Areas */ 71127668Sbms#define LS_TYPE_OPAQUE_LL 9 /* rfc2370 - Opaque Link Local */ 72127668Sbms#define LS_TYPE_OPAQUE_AL 10 /* rfc2370 - Opaque Link Local */ 73127668Sbms#define LS_TYPE_OPAQUE_DW 11 /* rfc2370 - Opaque Domain Wide */ 7417680Spst 75127668Sbms#define LS_OPAQUE_TYPE_TE 1 /* rfc3630 */ 76146773Ssam#define LS_OPAQUE_TYPE_GRACE 3 /* rfc3623 */ 77146773Ssam#define LS_OPAQUE_TYPE_RI 4 /* draft-ietf-ospf-cap-03 */ 78127668Sbms 79127668Sbms#define LS_OPAQUE_TE_TLV_ROUTER 1 /* rfc3630 */ 80127668Sbms#define LS_OPAQUE_TE_TLV_LINK 2 /* rfc3630 */ 81127668Sbms 82127668Sbms#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE 1 /* rfc3630 */ 83127668Sbms#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID 2 /* rfc3630 */ 84127668Sbms#define LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP 3 /* rfc3630 */ 85127668Sbms#define LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP 4 /* rfc3630 */ 86127668Sbms#define LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC 5 /* rfc3630 */ 87127668Sbms#define LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW 6 /* rfc3630 */ 88127668Sbms#define LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW 7 /* rfc3630 */ 89127668Sbms#define LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW 8 /* rfc3630 */ 90127668Sbms#define LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP 9 /* rfc3630 */ 91190207Srpaulo#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID 11 /* rfc4203 */ 92190207Srpaulo#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE 14 /* rfc4203 */ 93190207Srpaulo#define LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR 15 /* rfc4203 */ 94190207Srpaulo#define LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP 16 /* rfc4203 */ 95162017Ssam#define LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS 17 /* rfc4124 */ 96127668Sbms 97127668Sbms#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP 1 /* rfc3630 */ 98127668Sbms#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA 2 /* rfc3630 */ 99127668Sbms 100146773Ssam#define LS_OPAQUE_GRACE_TLV_PERIOD 1 /* rfc3623 */ 101146773Ssam#define LS_OPAQUE_GRACE_TLV_REASON 2 /* rfc3623 */ 102146773Ssam#define LS_OPAQUE_GRACE_TLV_INT_ADDRESS 3 /* rfc3623 */ 103146773Ssam 104146773Ssam#define LS_OPAQUE_GRACE_TLV_REASON_UNKNOWN 0 /* rfc3623 */ 105146773Ssam#define LS_OPAQUE_GRACE_TLV_REASON_SW_RESTART 1 /* rfc3623 */ 106146773Ssam#define LS_OPAQUE_GRACE_TLV_REASON_SW_UPGRADE 2 /* rfc3623 */ 107146773Ssam#define LS_OPAQUE_GRACE_TLV_REASON_CP_SWITCH 3 /* rfc3623 */ 108146773Ssam 109146773Ssam#define LS_OPAQUE_RI_TLV_CAP 1 /* draft-ietf-ospf-cap-03 */ 110146773Ssam 11117680Spst 11217680Spst/* rla_link.link_type */ 11317680Spst#define RLA_TYPE_ROUTER 1 /* point-to-point to another router */ 11417680Spst#define RLA_TYPE_TRANSIT 2 /* connection to transit network */ 11517680Spst#define RLA_TYPE_STUB 3 /* connection to stub network */ 11617680Spst#define RLA_TYPE_VIRTUAL 4 /* virtual link */ 11717680Spst 11817680Spst/* rla_flags */ 11917680Spst#define RLA_FLAG_B 0x01 12017680Spst#define RLA_FLAG_E 0x02 12117680Spst#define RLA_FLAG_W1 0x04 12217680Spst#define RLA_FLAG_W2 0x08 12317680Spst 12417680Spst/* sla_tosmetric breakdown */ 12517680Spst#define SLA_MASK_TOS 0x7f000000 12617680Spst#define SLA_MASK_METRIC 0x00ffffff 12717680Spst#define SLA_SHIFT_TOS 24 12817680Spst 12917680Spst/* asla_tosmetric breakdown */ 13017680Spst#define ASLA_FLAG_EXTERNAL 0x80000000 13117680Spst#define ASLA_MASK_TOS 0x7f000000 13217680Spst#define ASLA_SHIFT_TOS 24 13317680Spst#define ASLA_MASK_METRIC 0x00ffffff 13417680Spst 13517680Spst/* multicast vertex type */ 13617680Spst#define MCLA_VERTEX_ROUTER 1 13717680Spst#define MCLA_VERTEX_NETWORK 2 13817680Spst 139190207Srpaulo/* Link-Local-Signaling */ 140190207Srpaulo#define OSPF_LLS_EO 1 /* RFC4811, RFC4812 */ 141190207Srpaulo#define OSPF_LLS_MD5 2 /* RFC4813 */ 142190207Srpaulo 143190207Srpaulo#define OSPF_LLS_EO_LR 0x00000001 /* RFC4811 */ 144190207Srpaulo#define OSPF_LLS_EO_RS 0x00000002 /* RFC4812 */ 145190207Srpaulo 146190207Srpaulo/* 147190207Srpaulo * TOS metric struct (will be 0 or more in router links update) 148190207Srpaulo */ 149190207Srpaulostruct tos_metric { 150190207Srpaulo u_int8_t tos_type; 151190207Srpaulo u_int8_t reserved; 152190207Srpaulo u_int8_t tos_metric[2]; 153190207Srpaulo}; 154190207Srpaulostruct tos_link { 155190207Srpaulo u_int8_t link_type; 156190207Srpaulo u_int8_t link_tos_count; 157190207Srpaulo u_int8_t tos_metric[2]; 158190207Srpaulo}; 159190207Srpaulounion un_tos { 160190207Srpaulo struct tos_link link; 161190207Srpaulo struct tos_metric metrics; 162190207Srpaulo}; 163190207Srpaulo 16417680Spst/* link state advertisement header */ 16517680Spststruct lsa_hdr { 16675115Sfenner u_int16_t ls_age; 16775115Sfenner u_int8_t ls_options; 16875115Sfenner u_int8_t ls_type; 169127668Sbms union { 170127668Sbms struct in_addr lsa_id; 171127668Sbms struct { /* opaque LSAs change the LSA-ID field */ 172127668Sbms u_int8_t opaque_type; 173127668Sbms u_int8_t opaque_id[3]; 174127668Sbms } opaque_field; 175127668Sbms } un_lsa_id; 17617680Spst struct in_addr ls_router; 17717680Spst u_int32_t ls_seq; 17875115Sfenner u_int16_t ls_chksum; 17975115Sfenner u_int16_t ls_length; 180127668Sbms}; 18117680Spst 18217680Spst/* link state advertisement */ 18317680Spststruct lsa { 18417680Spst struct lsa_hdr ls_hdr; 18517680Spst 18617680Spst /* Link state types */ 18717680Spst union { 18817680Spst /* Router links advertisements */ 18917680Spst struct { 19075115Sfenner u_int8_t rla_flags; 19175115Sfenner u_int8_t rla_zero[1]; 19275115Sfenner u_int16_t rla_count; 19317680Spst struct rlalink { 19417680Spst struct in_addr link_id; 19517680Spst struct in_addr link_data; 196190207Srpaulo union un_tos un_tos; 19717680Spst } rla_link[1]; /* may repeat */ 19817680Spst } un_rla; 19917680Spst 20017680Spst /* Network links advertisements */ 20117680Spst struct { 20217680Spst struct in_addr nla_mask; 20317680Spst struct in_addr nla_router[1]; /* may repeat */ 20417680Spst } un_nla; 20517680Spst 20617680Spst /* Summary links advertisements */ 20717680Spst struct { 20817680Spst struct in_addr sla_mask; 20917680Spst u_int32_t sla_tosmetric[1]; /* may repeat */ 21017680Spst } un_sla; 21117680Spst 21217680Spst /* AS external links advertisements */ 21317680Spst struct { 21417680Spst struct in_addr asla_mask; 21517680Spst struct aslametric { 21617680Spst u_int32_t asla_tosmetric; 21717680Spst struct in_addr asla_forward; 21817680Spst struct in_addr asla_tag; 21917680Spst } asla_metric[1]; /* may repeat */ 22017680Spst } un_asla; 22117680Spst 22217680Spst /* Multicast group membership */ 22317680Spst struct mcla { 22417680Spst u_int32_t mcla_vtype; 22517680Spst struct in_addr mcla_vid; 22617680Spst } un_mcla[1]; 227127668Sbms 228127668Sbms /* Opaque TE LSA */ 229127668Sbms struct { 230127668Sbms u_int16_t type; 231127668Sbms u_int16_t length; 232127668Sbms u_int8_t data[1]; /* may repeat */ 233127668Sbms } un_te_lsa_tlv; 234127668Sbms 235146773Ssam /* Opaque Grace LSA */ 236146773Ssam struct { 237146773Ssam u_int16_t type; 238146773Ssam u_int16_t length; 239146773Ssam u_int8_t data[1]; /* may repeat */ 240146773Ssam } un_grace_tlv; 241146773Ssam 242146773Ssam /* Opaque Router information LSA */ 243146773Ssam struct { 244146773Ssam u_int16_t type; 245146773Ssam u_int16_t length; 246146773Ssam u_int8_t data[1]; /* may repeat */ 247146773Ssam } un_ri_tlv; 248146773Ssam 249127668Sbms /* Unknown LSA */ 250127668Sbms struct unknown { 251127668Sbms u_int8_t data[1]; /* may repeat */ 252127668Sbms } un_unknown[1]; 253127668Sbms 25417680Spst } lsa_un; 255127668Sbms}; 25617680Spst 25717680Spst#define OSPF_AUTH_SIZE 8 25817680Spst 25917680Spst/* 26017680Spst * the main header 26117680Spst */ 26217680Spststruct ospfhdr { 26375115Sfenner u_int8_t ospf_version; 26475115Sfenner u_int8_t ospf_type; 26575115Sfenner u_int16_t ospf_len; 26617680Spst struct in_addr ospf_routerid; 26717680Spst struct in_addr ospf_areaid; 26875115Sfenner u_int16_t ospf_chksum; 26975115Sfenner u_int16_t ospf_authtype; 27075115Sfenner u_int8_t ospf_authdata[OSPF_AUTH_SIZE]; 27117680Spst union { 27217680Spst 27317680Spst /* Hello packet */ 27417680Spst struct { 27517680Spst struct in_addr hello_mask; 27675115Sfenner u_int16_t hello_helloint; 27775115Sfenner u_int8_t hello_options; 27875115Sfenner u_int8_t hello_priority; 27917680Spst u_int32_t hello_deadint; 28017680Spst struct in_addr hello_dr; 28117680Spst struct in_addr hello_bdr; 28217680Spst struct in_addr hello_neighbor[1]; /* may repeat */ 28317680Spst } un_hello; 28417680Spst 28517680Spst /* Database Description packet */ 28617680Spst struct { 287190207Srpaulo u_int16_t db_ifmtu; 28875115Sfenner u_int8_t db_options; 28975115Sfenner u_int8_t db_flags; 29017680Spst u_int32_t db_seq; 29117680Spst struct lsa_hdr db_lshdr[1]; /* may repeat */ 29217680Spst } un_db; 29317680Spst 29417680Spst /* Link State Request */ 29517680Spst struct lsr { 296127668Sbms u_int8_t ls_type[4]; 297127668Sbms union { 298127668Sbms struct in_addr ls_stateid; 299127668Sbms struct { /* opaque LSAs change the LSA-ID field */ 300127668Sbms u_int8_t opaque_type; 301127668Sbms u_int8_t opaque_id[3]; 302127668Sbms } opaque_field; 303127668Sbms } un_ls_stateid; 30417680Spst struct in_addr ls_router; 30517680Spst } un_lsr[1]; /* may repeat */ 30617680Spst 30717680Spst /* Link State Update */ 30817680Spst struct { 30917680Spst u_int32_t lsu_count; 31017680Spst struct lsa lsu_lsa[1]; /* may repeat */ 31117680Spst } un_lsu; 31217680Spst 31317680Spst /* Link State Acknowledgement */ 31417680Spst struct { 31517680Spst struct lsa_hdr lsa_lshdr[1]; /* may repeat */ 31617680Spst } un_lsa ; 31717680Spst } ospf_un ; 318127668Sbms}; 31917680Spst 32017680Spst#define ospf_hello ospf_un.un_hello 32117680Spst#define ospf_db ospf_un.un_db 32217680Spst#define ospf_lsr ospf_un.un_lsr 32317680Spst#define ospf_lsu ospf_un.un_lsu 32417680Spst#define ospf_lsa ospf_un.un_lsa 32517680Spst 326190207Srpaulo/* Functions shared by ospf and ospf6 */ 327235530Sdelphijextern int ospf_print_te_lsa(const u_int8_t *, u_int); 328235530Sdelphijextern int ospf_print_grace_lsa(const u_int8_t *, u_int); 329