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/* @(#) $Header: /tcpdump/master/tcpdump/ospf6.h,v 1.7 2006-09-05 15:50:26 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_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 *_options */
#define OSPF6_OPTION_V6 0x01 /* V6 bit: A bit for peeping tom */
#define OSPF6_OPTION_E 0x02 /* E bit: External routes advertised */
#define OSPF6_OPTION_MC 0x04 /* MC bit: Multicast capable */
#define OSPF6_OPTION_N 0x08 /* N bit: For type-7 LSA */
#define OSPF6_OPTION_R 0x10 /* R bit: Router bit */
#define OSPF6_OPTION_DC 0x20 /* DC bit: Demand circuits */
/* db_flags */
#define OSPF6_DB_INIT 0x04 /* */
#define OSPF6_DB_MORE 0x02
#define OSPF6_DB_MASTER 0x01
/* ls_type */
#define LS_TYPE_ROUTER 1 /* router link */
#define LS_TYPE_NETWORK 2 /* network link */
#define LS_TYPE_INTER_AP 3 /* Inter-Area-Prefix */
#define LS_TYPE_INTER_AR 4 /* Inter-Area-Router */
#define LS_TYPE_ASE 5 /* ASE */
#define LS_TYPE_GROUP 6 /* Group membership */
#define LS_TYPE_NSSA 7 /* NSSA */
#define LS_TYPE_LINK 8 /* Link LSA */
#define LS_TYPE_INTRA_AP 9 /* Intra-Area-Prefix */
#define LS_TYPE_INTRA_ATE 10 /* Intra-Area-TE */
#define LS_TYPE_GRACE 11 /* Grace LSA */
#define LS_TYPE_MASK 0x1fff
#define LS_SCOPE_LINKLOCAL 0x0000
#define LS_SCOPE_AREA 0x2000
#define LS_SCOPE_AS 0x4000
#define LS_SCOPE_MASK 0x6000
#define LS_SCOPE_U 0x8000
/* 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_VIRTUAL 4 /* virtual link */
/* rla_flags */
#define RLA_FLAG_B 0x01
#define RLA_FLAG_E 0x02
#define RLA_FLAG_V 0x04
#define RLA_FLAG_W 0x08
#define RLA_FLAG_N 0x10
/* lsa_prefix options */
#define LSA_PREFIX_OPT_NU 0x01
#define LSA_PREFIX_OPT_LA 0x02
#define LSA_PREFIX_OPT_MC 0x04
#define LSA_PREFIX_OPT_P 0x08
#define LSA_PREFIX_OPT_DN 0x10
/* sla_tosmetric breakdown */
#define SLA_MASK_TOS 0x7f000000
#define SLA_MASK_METRIC 0x00ffffff
#define SLA_SHIFT_TOS 24
/* asla_metric */
#define ASLA_FLAG_FWDADDR 0x02000000
#define ASLA_FLAG_ROUTETAG 0x01000000
#define ASLA_MASK_METRIC 0x00ffffff
typedef u_int32_t rtrid_t;
/* link state advertisement header */
struct lsa6_hdr {
u_int16_t ls_age;
u_int16_t ls_type;
rtrid_t ls_stateid;
rtrid_t ls_router;
u_int32_t ls_seq;
u_int16_t ls_chksum;
u_int16_t ls_length;
};
struct lsa6_prefix {
u_int8_t lsa_p_len;
u_int8_t lsa_p_opt;
u_int16_t lsa_p_metric;
u_int8_t lsa_p_prefix[4];
};
/* link state advertisement */
struct lsa6 {
struct lsa6_hdr ls_hdr;
/* Link state types */
union {
/* Router links advertisements */
struct {
union {
u_int8_t flg;
u_int32_t opt;
} rla_flgandopt;
#define rla_flags rla_flgandopt.flg
#define rla_options rla_flgandopt.opt
struct rlalink6 {
u_int8_t link_type;
u_int8_t link_zero[1];
u_int16_t link_metric;
u_int32_t link_ifid;
u_int32_t link_nifid;
rtrid_t link_nrtid;
} rla_link[1]; /* may repeat */
} un_rla;
/* Network links advertisements */
struct {
u_int32_t nla_options;
rtrid_t nla_router[1]; /* may repeat */
} un_nla;
/* Inter Area Prefix LSA */
struct {
u_int32_t inter_ap_metric;
struct lsa6_prefix inter_ap_prefix[1];
} un_inter_ap;
/* AS external links advertisements */
struct {
u_int32_t asla_metric;
struct lsa6_prefix asla_prefix[1];
/* some optional fields follow */
} un_asla;
#if 0
/* Summary links advertisements */
struct {
struct in_addr sla_mask;
u_int32_t sla_tosmetric[1]; /* may repeat */
} un_sla;
/* Multicast group membership */
struct mcla {
u_int32_t mcla_vtype;
struct in_addr mcla_vid;
} un_mcla[1];
#endif
/* Type 7 LSA */
/* Link LSA */
struct llsa {
union {
u_int8_t pri;
u_int32_t opt;
} llsa_priandopt;
#define llsa_priority llsa_priandopt.pri
#define llsa_options llsa_priandopt.opt
struct in6_addr llsa_lladdr;
u_int32_t llsa_nprefix;
struct lsa6_prefix llsa_prefix[1];
} un_llsa;
/* Intra-Area-Prefix */
struct {
u_int16_t intra_ap_nprefix;
u_int16_t intra_ap_lstype;
rtrid_t intra_ap_lsid;
rtrid_t intra_ap_rtid;
struct lsa6_prefix intra_ap_prefix[1];
} un_intra_ap;
} lsa_un;
};
#define OSPF_AUTH_SIZE 8
/*
* the main header
*/
struct ospf6hdr {
u_int8_t ospf6_version;
u_int8_t ospf6_type;
u_int16_t ospf6_len;
rtrid_t ospf6_routerid;
rtrid_t ospf6_areaid;
u_int16_t ospf6_chksum;
u_int8_t ospf6_instanceid;
u_int8_t ospf6_rsvd;
union {
/* Hello packet */
struct {
u_int32_t hello_ifid;
union {
u_int8_t pri;
u_int32_t opt;
} hello_priandopt;
#define hello_priority hello_priandopt.pri
#define hello_options hello_priandopt.opt
u_int16_t hello_helloint;
u_int16_t hello_deadint;
rtrid_t hello_dr;
rtrid_t hello_bdr;
rtrid_t hello_neighbor[1]; /* may repeat */
} un_hello;
/* Database Description packet */
struct {
u_int32_t db_options;
u_int16_t db_mtu;
u_int8_t db_mbz;
u_int8_t db_flags;
u_int32_t db_seq;
struct lsa6_hdr db_lshdr[1]; /* may repeat */
} un_db;
/* Link State Request */
struct lsr6 {
u_int16_t ls_mbz;
u_int16_t ls_type;
rtrid_t ls_stateid;
rtrid_t ls_router;
} un_lsr[1]; /* may repeat */
/* Link State Update */
struct {
u_int32_t lsu_count;
struct lsa6 lsu_lsa[1]; /* may repeat */
} un_lsu;
/* Link State Acknowledgement */
struct {
struct lsa6_hdr lsa_lshdr[1]; /* may repeat */
} un_lsa ;
} ospf6_un ;
};
#define ospf6_hello ospf6_un.un_hello
#define ospf6_db ospf6_un.un_db
#define ospf6_lsr ospf6_un.un_lsr
#define ospf6_lsu ospf6_un.un_lsu
#define ospf6_lsa ospf6_un.un_lsa