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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _OSPF_H
#define _OSPF_H
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Definitions for parsing OSPF packets (RFC 2328 and RFC 2740)
*/
#ifdef __cplusplus
extern "C" {
#endif
#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
extern char *ospf_types[];
struct bits {
uint32_t bit;
const char *str;
};
char *ospf_print_bits(const struct bits *, uchar_t);
char *ospf_print_lsa_age(long);
/* Options *_options */
#define OSPF_OPTION_T 0x01 /* RFC 2328 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_N 0x08 /* N bit: For type-7 LSA */
#define OSPF_OPTION_R 0x10 /* R bit: Router bit */
#define OSPF_OPTION_DC 0x20 /* DC bit: Demand circuits */
#define OSPF_OPTION_V6 0x01 /* RFC 2740 V6 bit */
/* ospf_authtype */
#define OSPF_AUTH_NONE 0 /* No auth-data */
#define OSPF_AUTH_SIMPLE 1 /* Simple password */
#define OSPF_AUTH_MD5 2 /* MD5 authentication */
#define OSPF_AUTH_MD5_LEN 16 /* length of MD5 authentication */
#define OSPF_AUTH_TYPE_MAX 3
/* db_flags */
#define OSPF_DB_INIT 0x04 /* "I" */
#define OSPF_DB_MORE 0x02 /* "M" */
#define OSPF_DB_MASTER 0x01 /* "MS" */
/* 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_TYPE7 7 /* Type 7 LSA */
#define LS_TYPE_LINK 8 /* Link LSA */
#define LS_TYPE_INTRA_AP 9 /* Intra-Area-Prefix */
#define LS_TYPE_MAX 10
#define LS_TYPE_MASK 0x1fff
#define LS_TYPE_INTER_AP 3 /* RFC 2740 Inter-Area-Prefix */
#define LS_TYPE_INTER_AR 4 /* RFC 2740 Inter-Area-Router */
#define LS6_SCOPE_LINKLOCAL 0x0000
#define LS6_SCOPE_AREA 0x2000
#define LS6_SCOPE_AS 0x4000
#define LS6_SCOPE_MASK 0x6000
/* 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_V 0x04
#define RLA_FLAG_W 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 {
ushort_t ls_age;
uchar_t ls_options;
uchar_t ls_type;
struct in_addr ls_stateid;
struct in_addr ls_router;
uint32_t ls_seq;
ushort_t ls_chksum;
ushort_t ls_length;
};
/* link state advertisement */
struct lsa {
struct lsa_hdr ls_hdr;
/* Link state types */
union {
/* Router links advertisements */
struct {
uchar_t rla_flags;
uchar_t rla_zero[1];
ushort_t rla_count;
struct rlalink {
struct in_addr link_id;
struct in_addr link_data;
uchar_t link_type;
uchar_t link_toscount;
ushort_t 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;
uint32_t sla_tosmetric[1]; /* may repeat */
} un_sla;
/* AS external links advertisements */
struct {
struct in_addr asla_mask;
struct aslametric {
uint32_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 {
uint32_t 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 {
uchar_t tos_type;
uchar_t tos_zero;
ushort_t tos_metric;
};
/*
* OSPF minimum header sizes
*/
#define OSPF_AUTH_SIZE 8
#define OSPF_MIN_HEADER_SIZE 24
#define OSPF6_MIN_HEADER_SIZE 16
#define OSPF_MIN_HELLO_HEADER_SIZE 20
#define OSPF_MIN_DB_HEADER_SIZE 8
#define OSPF6_MIN_DB_HEADER_SIZE 12
#define OSPF_MIN_LSR_HEADER_SIZE 12
#define OSPF_MIN_LSU_HEADER_SIZE 4
/*
* ospf packet header
*/
struct ospfhdr {
uchar_t ospf_version;
uchar_t ospf_type;
ushort_t ospf_len;
struct in_addr ospf_routerid;
struct in_addr ospf_areaid;
ushort_t ospf_chksum;
ushort_t ospf_authtype;
uchar_t ospf_authdata[OSPF_AUTH_SIZE];
union {
/* Hello packet */
struct {
struct in_addr hello_mask;
ushort_t hello_helloint;
uchar_t hello_options;
uchar_t hello_priority;
uint32_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 {
uchar_t db_zero[2];
uchar_t db_options;
uchar_t db_flags;
uint32_t db_seq;
struct lsa_hdr db_lshdr[1]; /* may repeat */
} un_db;
/* Link State Request */
struct lsr {
uint32_t ls_type;
struct in_addr ls_stateid;
struct in_addr ls_router;
} un_lsr[1]; /* may repeat */
/* Link State Update */
struct {
uint32_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
#ifdef __cplusplus
}
#endif
#endif /* _OSPF_H */
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