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Diffstat (limited to 'ospf.h')
| -rw-r--r-- | ospf.h | 328 |
1 files changed, 328 insertions, 0 deletions
@@ -0,0 +1,328 @@ +/* @(#) $Header: /tcpdump/master/tcpdump/ospf.h,v 1.23 2007-10-08 07:53:21 hannes Exp $ (LBL) */ +/* + * Copyright (c) 1991, 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu) + */ +#define OSPF_TYPE_UMD 0 /* UMd's special monitoring packets */ +#define OSPF_TYPE_HELLO 1 /* Hello */ +#define OSPF_TYPE_DD 2 /* Database Description */ +#define OSPF_TYPE_LS_REQ 3 /* Link State Request */ +#define OSPF_TYPE_LS_UPDATE 4 /* Link State Update */ +#define OSPF_TYPE_LS_ACK 5 /* Link State Ack */ + +/* Options field + * + * +------------------------------------+ + * | DN | O | DC | L | N/P | MC | E | T | + * +------------------------------------+ + * + */ + +#define OSPF_OPTION_T 0x01 /* T bit: TOS support */ +#define OSPF_OPTION_E 0x02 /* E bit: External routes advertised */ +#define OSPF_OPTION_MC 0x04 /* MC bit: Multicast capable */ +#define OSPF_OPTION_NP 0x08 /* N/P bit: NSSA capable */ +#define OSPF_OPTION_EA 0x10 /* EA bit: External Attribute capable */ +#define OSPF_OPTION_L 0x10 /* L bit: Packet contains LLS data block */ +#define OSPF_OPTION_DC 0x20 /* DC bit: Demand circuit capable */ +#define OSPF_OPTION_O 0x40 /* O bit: Opaque LSA capable */ +#define OSPF_OPTION_DN 0x80 /* DN bit: Up/Down Bit capable - draft-ietf-ospf-2547-dnbit-04 */ + +/* ospf_authtype */ +#define OSPF_AUTH_NONE 0 /* No auth-data */ +#define OSPF_AUTH_SIMPLE 1 /* Simple password */ +#define OSPF_AUTH_SIMPLE_LEN 8 /* max length of simple authentication */ +#define OSPF_AUTH_MD5 2 /* MD5 authentication */ +#define OSPF_AUTH_MD5_LEN 16 /* length of MD5 authentication */ + +/* db_flags */ +#define OSPF_DB_INIT 0x04 +#define OSPF_DB_MORE 0x02 +#define OSPF_DB_MASTER 0x01 +#define OSPF_DB_RESYNC 0x08 /* RFC4811 */ + +/* ls_type */ +#define LS_TYPE_ROUTER 1 /* router link */ +#define LS_TYPE_NETWORK 2 /* network link */ +#define LS_TYPE_SUM_IP 3 /* summary link */ +#define LS_TYPE_SUM_ABR 4 /* summary area link */ +#define LS_TYPE_ASE 5 /* ASE */ +#define LS_TYPE_GROUP 6 /* Group membership (multicast */ + /* extensions 23 July 1991) */ +#define LS_TYPE_NSSA 7 /* rfc3101 - Not so Stubby Areas */ +#define LS_TYPE_OPAQUE_LL 9 /* rfc2370 - Opaque Link Local */ +#define LS_TYPE_OPAQUE_AL 10 /* rfc2370 - Opaque Link Local */ +#define LS_TYPE_OPAQUE_DW 11 /* rfc2370 - Opaque Domain Wide */ + +#define LS_OPAQUE_TYPE_TE 1 /* rfc3630 */ +#define LS_OPAQUE_TYPE_GRACE 3 /* rfc3623 */ +#define LS_OPAQUE_TYPE_RI 4 /* draft-ietf-ospf-cap-03 */ + +#define LS_OPAQUE_TE_TLV_ROUTER 1 /* rfc3630 */ +#define LS_OPAQUE_TE_TLV_LINK 2 /* rfc3630 */ + +#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE 1 /* rfc3630 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID 2 /* rfc3630 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP 3 /* rfc3630 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP 4 /* rfc3630 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC 5 /* rfc3630 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW 6 /* rfc3630 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW 7 /* rfc3630 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW 8 /* rfc3630 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP 9 /* rfc3630 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID 11 /* rfc4203 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE 14 /* rfc4203 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR 15 /* rfc4203 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP 16 /* rfc4203 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS 17 /* rfc4124 */ + +#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP 1 /* rfc3630 */ +#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA 2 /* rfc3630 */ + +#define LS_OPAQUE_GRACE_TLV_PERIOD 1 /* rfc3623 */ +#define LS_OPAQUE_GRACE_TLV_REASON 2 /* rfc3623 */ +#define LS_OPAQUE_GRACE_TLV_INT_ADDRESS 3 /* rfc3623 */ + +#define LS_OPAQUE_GRACE_TLV_REASON_UNKNOWN 0 /* rfc3623 */ +#define LS_OPAQUE_GRACE_TLV_REASON_SW_RESTART 1 /* rfc3623 */ +#define LS_OPAQUE_GRACE_TLV_REASON_SW_UPGRADE 2 /* rfc3623 */ +#define LS_OPAQUE_GRACE_TLV_REASON_CP_SWITCH 3 /* rfc3623 */ + +#define LS_OPAQUE_RI_TLV_CAP 1 /* draft-ietf-ospf-cap-03 */ + + +/* rla_link.link_type */ +#define RLA_TYPE_ROUTER 1 /* point-to-point to another router */ +#define RLA_TYPE_TRANSIT 2 /* connection to transit network */ +#define RLA_TYPE_STUB 3 /* connection to stub network */ +#define RLA_TYPE_VIRTUAL 4 /* virtual link */ + +/* rla_flags */ +#define RLA_FLAG_B 0x01 +#define RLA_FLAG_E 0x02 +#define RLA_FLAG_W1 0x04 +#define RLA_FLAG_W2 0x08 + +/* sla_tosmetric breakdown */ +#define SLA_MASK_TOS 0x7f000000 +#define SLA_MASK_METRIC 0x00ffffff +#define SLA_SHIFT_TOS 24 + +/* asla_tosmetric breakdown */ +#define ASLA_FLAG_EXTERNAL 0x80000000 +#define ASLA_MASK_TOS 0x7f000000 +#define ASLA_SHIFT_TOS 24 +#define ASLA_MASK_METRIC 0x00ffffff + +/* multicast vertex type */ +#define MCLA_VERTEX_ROUTER 1 +#define MCLA_VERTEX_NETWORK 2 + +/* Link-Local-Signaling */ +#define OSPF_LLS_EO 1 /* RFC4811, RFC4812 */ +#define OSPF_LLS_MD5 2 /* RFC4813 */ + +#define OSPF_LLS_EO_LR 0x00000001 /* RFC4811 */ +#define OSPF_LLS_EO_RS 0x00000002 /* RFC4812 */ + +/* + * TOS metric struct (will be 0 or more in router links update) + */ +struct tos_metric { + u_int8_t tos_type; + u_int8_t reserved; + u_int8_t tos_metric[2]; +}; +struct tos_link { + u_int8_t link_type; + u_int8_t link_tos_count; + u_int8_t tos_metric[2]; +}; +union un_tos { + struct tos_link link; + struct tos_metric metrics; +}; + +/* link state advertisement header */ +struct lsa_hdr { + u_int16_t ls_age; + u_int8_t ls_options; + u_int8_t ls_type; + union { + struct in_addr lsa_id; + struct { /* opaque LSAs change the LSA-ID field */ + u_int8_t opaque_type; + u_int8_t opaque_id[3]; + } opaque_field; + } un_lsa_id; + struct in_addr ls_router; + u_int32_t ls_seq; + u_int16_t ls_chksum; + u_int16_t ls_length; +}; + +/* link state advertisement */ +struct lsa { + struct lsa_hdr ls_hdr; + + /* Link state types */ + union { + /* Router links advertisements */ + struct { + u_int8_t rla_flags; + u_int8_t rla_zero[1]; + u_int16_t rla_count; + struct rlalink { + struct in_addr link_id; + struct in_addr link_data; + union un_tos un_tos; + } rla_link[1]; /* may repeat */ + } un_rla; + + /* Network links advertisements */ + struct { + struct in_addr nla_mask; + struct in_addr nla_router[1]; /* may repeat */ + } un_nla; + + /* Summary links advertisements */ + struct { + struct in_addr sla_mask; + u_int32_t sla_tosmetric[1]; /* may repeat */ + } un_sla; + + /* AS external links advertisements */ + struct { + struct in_addr asla_mask; + struct aslametric { + u_int32_t asla_tosmetric; + struct in_addr asla_forward; + struct in_addr asla_tag; + } asla_metric[1]; /* may repeat */ + } un_asla; + + /* Multicast group membership */ + struct mcla { + u_int32_t mcla_vtype; + struct in_addr mcla_vid; + } un_mcla[1]; + + /* Opaque TE LSA */ + struct { + u_int16_t type; + u_int16_t length; + u_int8_t data[1]; /* may repeat */ + } un_te_lsa_tlv; + + /* Opaque Grace LSA */ + struct { + u_int16_t type; + u_int16_t length; + u_int8_t data[1]; /* may repeat */ + } un_grace_tlv; + + /* Opaque Router information LSA */ + struct { + u_int16_t type; + u_int16_t length; + u_int8_t data[1]; /* may repeat */ + } un_ri_tlv; + + /* Unknown LSA */ + struct unknown { + u_int8_t data[1]; /* may repeat */ + } un_unknown[1]; + + } lsa_un; +}; + +#define OSPF_AUTH_SIZE 8 + +/* + * the main header + */ +struct ospfhdr { + u_int8_t ospf_version; + u_int8_t ospf_type; + u_int16_t ospf_len; + struct in_addr ospf_routerid; + struct in_addr ospf_areaid; + u_int16_t ospf_chksum; + u_int16_t ospf_authtype; + u_int8_t ospf_authdata[OSPF_AUTH_SIZE]; + union { + + /* Hello packet */ + struct { + struct in_addr hello_mask; + u_int16_t hello_helloint; + u_int8_t hello_options; + u_int8_t hello_priority; + u_int32_t hello_deadint; + struct in_addr hello_dr; + struct in_addr hello_bdr; + struct in_addr hello_neighbor[1]; /* may repeat */ + } un_hello; + + /* Database Description packet */ + struct { + u_int16_t db_ifmtu; + u_int8_t db_options; + u_int8_t db_flags; + u_int32_t db_seq; + struct lsa_hdr db_lshdr[1]; /* may repeat */ + } un_db; + + /* Link State Request */ + struct lsr { + u_int8_t ls_type[4]; + union { + struct in_addr ls_stateid; + struct { /* opaque LSAs change the LSA-ID field */ + u_int8_t opaque_type; + u_int8_t opaque_id[3]; + } opaque_field; + } un_ls_stateid; + struct in_addr ls_router; + } un_lsr[1]; /* may repeat */ + + /* Link State Update */ + struct { + u_int32_t lsu_count; + struct lsa lsu_lsa[1]; /* may repeat */ + } un_lsu; + + /* Link State Acknowledgement */ + struct { + struct lsa_hdr lsa_lshdr[1]; /* may repeat */ + } un_lsa ; + } ospf_un ; +}; + +#define ospf_hello ospf_un.un_hello +#define ospf_db ospf_un.un_db +#define ospf_lsr ospf_un.un_lsr +#define ospf_lsu ospf_un.un_lsu +#define ospf_lsa ospf_un.un_lsa + +/* Functions shared by ospf and ospf6 */ +extern int ospf_print_te_lsa(const u_int8_t *, u_int); +extern int ospf_print_grace_lsa(const u_int8_t *, u_int); |