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281 lines
7.3 KiB
C
281 lines
7.3 KiB
C
/*
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* Copyright (c) 1991, 1993, 1994, 1995, 1996, 1997
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu)
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*/
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#define OSPF_TYPE_UMD 0 /* UMd's special monitoring packets */
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#define OSPF_TYPE_HELLO 1 /* Hello */
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#define OSPF_TYPE_DB 2 /* Database Description */
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#define OSPF_TYPE_LSR 3 /* Link State Request */
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#define OSPF_TYPE_LSU 4 /* Link State Update */
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#define OSPF_TYPE_LSA 5 /* Link State Ack */
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#define OSPF_TYPE_MAX 6
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/* Options *_options */
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#define OSPF6_OPTION_V6 0x01 /* V6 bit: A bit for peeping tom */
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#define OSPF6_OPTION_E 0x02 /* E bit: External routes advertised */
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#define OSPF6_OPTION_MC 0x04 /* MC bit: Multicast capable */
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#define OSPF6_OPTION_N 0x08 /* N bit: For type-7 LSA */
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#define OSPF6_OPTION_R 0x10 /* R bit: Router bit */
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#define OSPF6_OPTION_DC 0x20 /* DC bit: Demand circuits */
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/* db_flags */
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#define OSPF6_DB_INIT 0x04 /* */
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#define OSPF6_DB_MORE 0x02
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#define OSPF6_DB_MASTER 0x01
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/* ls_type */
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#define LS_TYPE_ROUTER 1 /* router link */
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#define LS_TYPE_NETWORK 2 /* network link */
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#define LS_TYPE_INTER_AP 3 /* Inter-Area-Prefix */
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#define LS_TYPE_INTER_AR 4 /* Inter-Area-Router */
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#define LS_TYPE_ASE 5 /* ASE */
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#define LS_TYPE_GROUP 6 /* Group membership */
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#define LS_TYPE_TYPE7 7 /* Type 7 LSA */
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#define LS_TYPE_LINK 8 /* Link LSA */
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#define LS_TYPE_INTRA_AP 9 /* Intra-Area-Prefix */
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#define LS_TYPE_MAX 10
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#define LS_TYPE_MASK 0x1fff
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#define LS_SCOPE_LINKLOCAL 0x0000
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#define LS_SCOPE_AREA 0x2000
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#define LS_SCOPE_AS 0x4000
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#define LS_SCOPE_MASK 0x6000
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/*************************************************
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*
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* is the above a bug in the documentation?
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*
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*************************************************/
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/* rla_link.link_type */
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#define RLA_TYPE_ROUTER 1 /* point-to-point to another router */
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#define RLA_TYPE_TRANSIT 2 /* connection to transit network */
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#define RLA_TYPE_VIRTUAL 4 /* virtual link */
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/* rla_flags */
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#define RLA_FLAG_B 0x01
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#define RLA_FLAG_E 0x02
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#define RLA_FLAG_V 0x04
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#define RLA_FLAG_W 0x08
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/* sla_tosmetric breakdown */
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#define SLA_MASK_TOS 0x7f000000
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#define SLA_MASK_METRIC 0x00ffffff
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#define SLA_SHIFT_TOS 24
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/* asla_tosmetric breakdown */
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#define ASLA_FLAG_EXTERNAL 0x80000000
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#define ASLA_MASK_TOS 0x7f000000
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#define ASLA_SHIFT_TOS 24
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#define ASLA_MASK_METRIC 0x00ffffff
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/* multicast vertex type */
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#define MCLA_VERTEX_ROUTER 1
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#define MCLA_VERTEX_NETWORK 2
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typedef u_int32_t rtrid_t;
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/* link state advertisement header */
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struct lsa_hdr {
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u_int16_t ls_age;
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u_int16_t ls_type;
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rtrid_t ls_stateid;
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rtrid_t ls_router;
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u_int32_t ls_seq;
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u_int16_t ls_chksum;
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u_int16_t ls_length;
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} ;
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struct lsa_prefix {
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u_int8_t lsa_p_len;
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u_int8_t lsa_p_opt;
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u_int16_t lsa_p_mbz;
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u_int8_t lsa_p_prefix[4];
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};
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/* link state advertisement */
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struct lsa {
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struct lsa_hdr ls_hdr;
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/* Link state types */
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union {
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/* Router links advertisements */
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struct {
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union {
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u_int8_t flg;
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u_int32_t opt;
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} rla_flgandopt;
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#define rla_flags rla_flgandopt.flg
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#define rla_options rla_flgandopt.opt
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struct rlalink {
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u_int8_t link_type;
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u_int8_t link_zero[1];
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u_int16_t link_metric;
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u_int32_t link_ifid;
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u_int32_t link_nifid;
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rtrid_t link_nrtid;
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} rla_link[1]; /* may repeat */
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} un_rla;
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/* Network links advertisements */
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struct {
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u_int32_t nla_options;
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rtrid_t nla_router[1]; /* may repeat */
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} un_nla;
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/* Inter Area Prefix LSA */
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struct {
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u_int32_t inter_ap_metric;
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struct lsa_prefix inter_ap_prefix[1];
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} un_inter_ap;
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#if 0
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/* Summary links advertisements */
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struct {
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struct in_addr sla_mask;
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u_int32_t sla_tosmetric[1]; /* may repeat */
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} un_sla;
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/* AS external links advertisements */
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struct {
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struct in_addr asla_mask;
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struct aslametric {
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u_int32_t asla_tosmetric;
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struct in_addr asla_forward;
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struct in_addr asla_tag;
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} asla_metric[1]; /* may repeat */
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} un_asla;
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/* Multicast group membership */
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struct mcla {
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u_int32_t mcla_vtype;
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struct in_addr mcla_vid;
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} un_mcla[1];
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#endif
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/* Type 7 LSA */
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/* Link LSA */
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struct llsa {
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union {
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u_int8_t pri;
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u_int32_t opt;
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} llsa_priandopt;
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#define llsa_priority llsa_priandopt.pri
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#define llsa_options llsa_priandopt.opt
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struct in6_addr llsa_lladdr;
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u_int32_t llsa_nprefix;
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struct lsa_prefix llsa_prefix[1];
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} un_llsa;
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/* Intra-Area-Prefix */
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struct {
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u_int16_t intra_ap_nprefix;
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u_int16_t intra_ap_lstype;
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rtrid_t intra_ap_lsid;
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rtrid_t intra_ap_rtid;
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struct lsa_prefix intra_ap_prefix[1];
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} un_intra_ap;
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} lsa_un;
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} ;
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/*
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* TOS metric struct (will be 0 or more in router links update)
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*/
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struct tos_metric {
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u_int8_t tos_type;
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u_int8_t tos_zero;
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u_int16_t tos_metric;
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} ;
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#define OSPF_AUTH_SIZE 8
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/*
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* the main header
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*/
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struct ospf6hdr {
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u_int8_t ospf6_version;
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u_int8_t ospf6_type;
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u_int16_t ospf6_len;
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rtrid_t ospf6_routerid;
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rtrid_t ospf6_areaid;
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u_int16_t ospf6_chksum;
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u_int8_t ospf6_instanceid;
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u_int8_t ospf6_rsvd;
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union {
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/* Hello packet */
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struct {
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u_int32_t hello_ifid;
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union {
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u_int8_t pri;
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u_int32_t opt;
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} hello_priandopt;
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#define hello_priority hello_priandopt.pri
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#define hello_options hello_priandopt.opt
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u_int16_t hello_helloint;
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u_int16_t hello_deadint;
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rtrid_t hello_dr;
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rtrid_t hello_bdr;
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rtrid_t hello_neighbor[1]; /* may repeat */
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} un_hello;
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/* Database Description packet */
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struct {
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u_int32_t db_options;
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u_int16_t db_mtu;
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u_int8_t db_mbz;
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u_int8_t db_flags;
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u_int32_t db_seq;
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struct lsa_hdr db_lshdr[1]; /* may repeat */
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} un_db;
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/* Link State Request */
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struct lsr {
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u_int16_t ls_mbz;
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u_int16_t ls_type;
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rtrid_t ls_stateid;
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rtrid_t ls_router;
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} un_lsr[1]; /* may repeat */
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/* Link State Update */
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struct {
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u_int32_t lsu_count;
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struct lsa lsu_lsa[1]; /* may repeat */
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} un_lsu;
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/* Link State Acknowledgement */
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struct {
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struct lsa_hdr lsa_lshdr[1]; /* may repeat */
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} un_lsa ;
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} ospf6_un ;
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} ;
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#define ospf6_hello ospf6_un.un_hello
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#define ospf6_db ospf6_un.un_db
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#define ospf6_lsr ospf6_un.un_lsr
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#define ospf6_lsu ospf6_un.un_lsu
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#define ospf6_lsa ospf6_un.un_lsa
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