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- /*
- * Copyright (c) 1991 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_DB 2 /* Database Description */
- #define OSPF_TYPE_LSR 3 /* Link State Request */
- #define OSPF_TYPE_LSU 4 /* Link State Update */
- #define OSPF_TYPE_LSA 5 /* Link State Ack */
- #define OSPF_TYPE_MAX 6
-
- /* Options *_options */
- #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 */
-
- /* ospf_authtype */
- #define OSPF_AUTH_NONE 0 /* No auth-data */
- #define OSPF_AUTH_SIMPLE 1 /* Simple password */
-
- /* db_flags */
- #define OSPF_DB_INIT 0x04 /* */
- #define OSPF_DB_MORE 0x02
- #define OSPF_DB_MASTER 0x01
-
- /* 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_MAX 7
-
- /*************************************************
- *
- * is the above a bug in the documentation?
- *
- *************************************************/
-
-
- /* 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 state advertisement header */
- struct lsa_hdr {
- u_short ls_age;
- u_char ls_options;
- u_char ls_type;
- struct in_addr ls_stateid;
- struct in_addr ls_router;
- u_long ls_seq;
- u_short ls_chksum;
- u_short ls_length;
- } ;
-
- /* link state advertisement */
- struct lsa {
- struct lsa_hdr ls_hdr;
-
- /* Link state types */
- union {
- /* Router links advertisements */
- struct {
- u_char rla_flags;
- u_char rla_zero[1];
- u_short rla_count;
- struct rlalink {
- struct in_addr link_id;
- struct in_addr link_data;
- u_char link_type;
- u_char link_toscount;
- u_short link_tos0metric;
- } 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_long sla_tosmetric[1]; /* may repeat */
- } un_sla;
-
- /* AS external links advertisements */
- struct {
- struct in_addr asla_mask;
- struct aslametric {
- u_long 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_long mcla_vtype;
- struct in_addr mcla_vid;
- } un_mcla[1];
- } lsa_un;
- } ;
-
-
- /*
- * TOS metric struct (will be 0 or more in router links update)
- */
- struct tos_metric {
- u_char tos_type;
- u_char tos_zero;
- u_short tos_metric;
- } ;
-
- #define OSPF_AUTH_SIZE 8
-
- /*
- * the main header
- */
- struct ospfhdr {
- u_char ospf_version;
- u_char ospf_type;
- u_short ospf_len;
- struct in_addr ospf_routerid;
- struct in_addr ospf_areaid;
- u_short ospf_chksum;
- u_short ospf_authtype;
- u_char ospf_authdata[OSPF_AUTH_SIZE];
- union {
-
- /* Hello packet */
- struct {
- struct in_addr hello_mask;
- u_short hello_helloint;
- u_char hello_options;
- u_char hello_priority;
- u_long 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_char db_zero[2];
- u_char db_options;
- u_char db_flags;
- u_long db_seq;
- struct lsa_hdr db_lshdr[1]; /* may repeat */
- } un_db;
-
- /* Link State Request */
- struct lsr {
- u_long ls_type;
- struct in_addr ls_stateid;
- struct in_addr ls_router;
- } un_lsr[1]; /* may repeat */
-
- /* Link State Update */
- struct {
- u_long lsu_count;
- struct lsa lsu_lsa[1]; /* may repeat */
- } un_lsu;
-
- /* Link State Acknowledment */
- 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
-
-