/* @(#) $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	0x00fffffftypedef 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