[thirdparty/bird.git] / proto / ospf / ospf.h

/*
 *	BIRD -- OSPF
 *
 *	(c) 1999--2005 Ondrej Filip <feela@network.cz>
 *
 *	Can be freely distributed and used under the terms of the GNU GPL.
 */

#ifndef _BIRD_OSPF_H_
#define _BIRD_OSPF_H_

#define MAXNETS 10
#define OSPF_VLINK_MTU 576	/* RFC2328 - A.1 */
#define OSPF_MAX_PKT_SIZE 65536
			/*
                         * RFC 2328 says, maximum packet size is 65535
			 * This could be too much for small systems, so I
			 * normally allocate 2*mtu - (I found one cisco
			 * sending packets mtu+16)
			 */
#ifdef LOCAL_DEBUG
#define OSPF_FORCE_DEBUG 1
#else
#define OSPF_FORCE_DEBUG 0
#endif
#define OSPF_TRACE(flags, msg, args...) do { if ((p->debug & flags) || OSPF_FORCE_DEBUG) \
  log(L_TRACE "%s: " msg, p->name , ## args ); } while(0)

#define OSPF_PACKET(dumpfn, buffer, msg, args...) \
do { if ((p->debug & D_PACKETS) || OSPF_FORCE_DEBUG) \
{ log(L_TRACE "%s: " msg, p->name, ## args ); dumpfn(p, buffer); } } while(0)


#include "nest/bird.h"

#include "lib/checksum.h"
#include "lib/ip.h"
#include "lib/lists.h"
#include "lib/slists.h"
#include "lib/socket.h"
#include "lib/timer.h"
#include "lib/resource.h"
#include "nest/protocol.h"
#include "nest/iface.h"
#include "nest/route.h"
#include "nest/cli.h"
#include "nest/locks.h"
#include "conf/conf.h"
#include "lib/string.h"

#define OSPF_PROTO 89
#ifndef IPV6
#define OSPF_VERSION 2
#define AllSPFRouters ipa_from_u32(0xe0000005)	/* 224.0.0.5 */
#define AllDRouters ipa_from_u32(0xe0000006)	/* 224.0.0.6 */
#define DEFAULTDES ipa_from_u32(0)
#else
#error OSPF for IPv6 is not implemented (mail to Feela <feela@network.cz>)
#endif


#define LSREFRESHTIME 1800	/* 30 minutes */
#define MINLSINTERVAL 5
#define MINLSARRIVAL 1
#define LSINFINITY 0xffffff

#define DEFAULT_OSPFTICK 1
#define DEFAULT_RFC1583 0	/* compatibility with rfc1583 */
#define DEFAULT_STUB_COST 1000


struct ospf_config
{
  struct proto_config c;
  unsigned tick;
  int rfc1583;
  list area_list;
};

struct nbma_node
{
  node n;
  ip_addr ip;
  int eligible;
};

struct area_net_config
{
  node n;
  struct prefix px;
  int hidden;
};

struct area_net
{
  struct fib_node fn;
  int hidden;
  int active;
  u32 metric;
};

struct ospf_area_config
{
  node n;
  u32 areaid;
  int stub;
  list patt_list;
  list vlink_list;
  list net_list;
};

struct obits
{
#ifdef _BIG_ENDIAN
  u8 unused2:2;
  u8 dc:1;
  u8 ea:1;
  u8 np:1;
  u8 mc:1;
  u8 e:1;
  u8 unused1:1;
#else
  u8 unused1:1;
  u8 e:1;
  u8 mc:1;
  u8 np:1;
  u8 ea:1;
  u8 dc:1;
  u8 unused2:2;
#endif
};

union options
{
  u8 byte;
  struct obits bit;
};


struct ospf_iface
{
  node n;
  struct iface *iface;		/* Nest's iface */
  struct ospf_area *oa;
  struct object_lock *lock;
  sock *hello_sk;		/* Hello socket */
  sock *dr_sk;			/* For states DR or BACKUP */
  sock *ip_sk;			/* IP socket (for DD ...) */
  list neigh_list;		/* List of neigbours */
  u32 cost;			/* Cost of iface */
  u32 waitint;			/* number of sec before changing state from wait */
  u32 rxmtint;			/* number of seconds between LSA retransmissions */
  u32 pollint;			/* Poll interval */
  u32 dead;			/* after "deadint" missing hellos is router dead */
  u32 vid;			/* Id of peer of virtual link */
  ip_addr vip;			/* IP of peer of virtual link */
  struct ospf_area *voa;	/* Area wich the vlink goes through */
  u16 inftransdelay;		/* The estimated number of seconds it takes to
				   transmit a Link State Update Packet over this
				   interface.  LSAs contained in the update */
  u16 autype;
  u16 helloint;			/* number of seconds between hello sending */
  list *passwords;
  u32 csn;                      /* Last used crypt seq number */
  bird_clock_t csn_use;         /* Last time when packet with that CSN was sent */
  ip_addr drip;			/* Designated router */
  u32 drid;
  ip_addr bdrip;		/* Backup DR */
  u32 bdrid;
  u8 type;			/* OSPF view of type */
#define OSPF_IT_BCAST 0
#define OSPF_IT_NBMA 1
#define OSPF_IT_PTP 2
#define OSPF_IT_VLINK 3
#define OSPF_IT_UNDEF 4
  u8 strictnbma;		/* Can I talk with unknown neighbors? */
  u8 stub;			/* Inactive interface */
#define OSPF_I_OK 0		/* Everything OK */
#define OSPF_I_MC 1		/* I didn't open MC socket */
#define OSPF_I_IP 2		/* I didn't open IP socet */
  u8 state;			/* Interface state machine */
#define OSPF_IS_DOWN 0		/* Not working */
#define OSPF_IS_LOOP 1		/* Should never happen */
#define OSPF_IS_WAITING 2	/* Waiting for Wait timer */
#define OSPF_IS_PTP 3		/* PTP operational */
#define OSPF_IS_DROTHER 4	/* I'm on BCAST or NBMA and I'm not DR */
#define OSPF_IS_BACKUP 5	/* I'm BDR */
#define OSPF_IS_DR 6		/* I'm DR */
  timer *wait_timer;		/* WAIT timer */
  timer *hello_timer;		/* HELLOINT timer */
  timer *poll_timer;		/* Poll Interval - for NBMA */
/* Default values for interface parameters */
#define COST_D 10
#define RXMTINT_D 5
#define INFTRANSDELAY_D 1
#define PRIORITY_D 1
#define HELLOINT_D 10
#define POLLINT_D 20
#define DEADC_D 4
#define WAIT_DMH 4		/* Value of Wait timer - not found it in RFC 
				 * - using 4*HELLO
				 */
  struct top_hash_entry *nlsa;	/* Originated net lsa */
  int orignet;			/* Schedule network LSA origination */
  int fadj;			/* Number of full adjacent neigh */
  list nbma_list;
  u8 priority;			/* A router priority for DR election */
  u8 ioprob;
  u32 rxbuf;
};

struct ospf_md5
{
  u16 zero;
  u8 keyid;
  u8 len;
  u32 csn;
};

union ospf_auth
{
  u8 password[8];
  struct ospf_md5 md5;
};

struct ospf_packet
{
  u8 version;
  u8 type;
#define HELLO_P 1		/* Hello */
#define DBDES_P 2		/* Database description */
#define LSREQ_P 3		/* Link state request */
#define LSUPD_P 4		/* Link state update */
#define LSACK_P 5		/* Link state acknowledgement */
  u16 length;
  u32 routerid;
  u32 areaid;
#define BACKBONE 0
  u16 checksum;
  u16 autype;
  union ospf_auth u;
};

struct ospf_hello_packet
{
  struct ospf_packet ospf_packet;
  ip_addr netmask;
  u16 helloint;
  u8 options;
  u8 priority;
  u32 deadint;
  ip_addr dr;
  ip_addr bdr;
};

struct immsb
{
#ifdef _BIG_ENDIAN
  u8 padding:5;
  u8 i:1;
  u8 m:1;
  u8 ms:1;
#else
  u8 ms:1;
  u8 m:1;
  u8 i:1;
  u8 padding:5;
#endif
};

union imms
{
  u8 byte;
  struct immsb bit;
};

struct ospf_dbdes_packet
{
  struct ospf_packet ospf_packet;
  u16 iface_mtu;
  u8 options;
  union imms imms;		/* I, M, MS bits */
#define DBDES_MS 1
#define DBDES_M 2
#define DBDES_I 4
  u32 ddseq;
};


struct ospf_lsa_header
{
  u16 age;			/* LS Age */
#define LSA_MAXAGE 3600		/* 1 hour */
#define LSA_CHECKAGE 300	/* 5 minutes */
#define LSA_MAXAGEDIFF 900	/* 15 minutes */
  u8 options;
  u8 type;
  u32 id;
#define LSA_T_RT 1
#define LSA_T_NET 2
#define LSA_T_SUM_NET 3
#define LSA_T_SUM_RT 4
#define LSA_T_EXT 5
  u32 rt;			/* Advertising router */
  s32 sn;			/* LS Sequence number */
#define LSA_INITSEQNO 0x80000001
#define LSA_MAXSEQNO 0x7fffffff
  u16 checksum;
  u16 length;
};

struct vebb
{
#ifdef _BIG_ENDIAN
  u8 padding:5;
  u8 v:1;
  u8 e:1;
  u8 b:1;
#else
  u8 b:1;
  u8 e:1;
  u8 v:1;
  u8 padding:5;
#endif
};

union veb
{
  u8 byte;
  struct vebb bit;
};

struct ospf_lsa_rt
{
  union veb veb;
  u8 padding;
  u16 links;
};

struct ospf_lsa_rt_link
{
  u32 id;
  u32 data;
  u8 type;
#define LSART_PTP 1
#define LSART_NET 2
#define LSART_STUB 3
#define LSART_VLNK 4
  u8 notos;
  u16 metric;
};

struct ospf_lsa_rt_link_tos
{				/* Actually we ignore TOS. This is useless */
  u8 tos;
  u8 padding;
  u16 metric;
};

struct ospf_lsa_net
{
  ip_addr netmask;
};

struct ospf_lsa_sum
{
  ip_addr netmask;
};


struct ospf_lsa_ext
{
  ip_addr netmask;
};

struct ospf_lsa_ext_etos 
{
#ifdef _BIG_ENDIAN
  u8 ebit:1;
  u8 tos:7;
  u8 padding1;
  u16 padding2;
#else
  u16 padding2;
  u8 padding1;
  u8 tos:7;
  u8 ebit:1;
#endif
};

#define METRIC_MASK 0x00FFFFFF
struct ospf_lsa_sum_tos 
{
#ifdef _BIG_ENDIAN
  u8 tos;
  u8 padding1;
  u16 padding2;
#else
  u16 padding2;
  u8 padding1;
  u8 tos;
#endif
};

union ospf_lsa_sum_tm
{
  struct ospf_lsa_sum_tos tos;
  u32 metric;
};

union ospf_lsa_ext_etm
{
  struct ospf_lsa_ext_etos etos;
  u32 metric;
};

struct ospf_lsa_ext_tos
{
  union ospf_lsa_ext_etm etm;
  ip_addr fwaddr;
  u32 tag;
};

struct ospf_lsreq_packet
{
  struct ospf_packet ospf_packet;
};

struct ospf_lsreq_header
{
  u16 padd1;
  u8 padd2;
  u8 type;
  u32 id;
  u32 rt;			/* Advertising router */
};

struct l_lsr_head
{
  node n;
  struct ospf_lsreq_header lsh;
};

struct ospf_lsupd_packet
{
  struct ospf_packet ospf_packet;
  u32 lsano;			/* Number of LSA's */
};

struct ospf_lsack_packet
{
  struct ospf_packet ospf_packet;
};


struct ospf_neighbor
{
  node n;
  pool *pool;
  struct ospf_iface *ifa;
  u8 state;
#define NEIGHBOR_DOWN 0
#define NEIGHBOR_ATTEMPT 1
#define NEIGHBOR_INIT 2
#define NEIGHBOR_2WAY 3
#define NEIGHBOR_EXSTART 4
#define NEIGHBOR_EXCHANGE 5
#define NEIGHBOR_LOADING 6
#define NEIGHBOR_FULL 7
  timer *inactim;		/* Inactivity timer */
  union imms imms;		/* I, M, Master/slave received */
  u32 dds;			/* DD Sequence number being sent */
  u32 ddr;			/* last Dat Des packet received */
  union imms myimms;		/* I, M Master/slave */
  u32 rid;			/* Router ID */
  ip_addr ip;			/* IP of it's interface */
  u8 priority;			/* Priority */
  u8 options;			/* Options received */
  ip_addr dr;			/* Neigbour's idea of DR */
  ip_addr bdr;			/* Neigbour's idea of BDR */
  u8 adj;			/* built adjacency? */
  siterator dbsi;		/* Database summary list iterator */
  slist lsrql;			/* Link state request */
  struct top_graph *lsrqh;	/* LSA graph */
  siterator lsrqi;
  slist lsrtl;			/* Link state retransmission list */
  siterator lsrti;
  struct top_graph *lsrth;
  void *ldbdes;			/* Last database description packet */
  timer *rxmt_timer;		/* RXMT timer */
  list ackl[2];
#define ACKL_DIRECT 0
#define ACKL_DELAY 1
  timer *ackd_timer;		/* Delayed ack timer */
  u32 csn;                      /* Last received crypt seq number (for MD5) */
};

/* Definitions for interface state machine */
#define ISM_UP 0		/* Interface Up */
#define ISM_WAITF 1		/* Wait timer fired */
#define ISM_BACKS 2		/* Backup seen */
#define ISM_NEICH 3		/* Neighbor change */
#define ISM_LOOP 4		/* Loop indicated */
#define ISM_UNLOOP 5		/* Unloop indicated */
#define ISM_DOWN 6		/* Interface down */

/* Definitions for neighbor state machine */
#define INM_HELLOREC 0		/* Hello Received */
#define INM_START 1		/* Neighbor start - for NBMA */
#define INM_2WAYREC 2		/* 2-Way received */
#define INM_NEGDONE 3		/* Negotiation done */
#define INM_EXDONE 4		/* Exchange done */
#define INM_BADLSREQ 5		/* Bad LS Request */
#define INM_LOADDONE 6		/* Load done */
#define INM_ADJOK 7		/* AdjOK? */
#define INM_SEQMIS 8		/* Sequence number mismatch */
#define INM_1WAYREC 9		/* 1-Way */
#define INM_KILLNBR 10		/* Kill Neighbor */
#define INM_INACTTIM 11		/* Inactivity timer */
#define INM_LLDOWN 12		/* Line down */

struct ospf_area
{
  node n;
  u32 areaid;
  int origrt;			/* Rt lsa origination scheduled? */
  struct top_hash_entry *rt;	/* My own router LSA */
  list cand;			/* List of candidates for RT calc. */
  struct fib net_fib;		/* Networks to advertise or not */
  int stub;
  int trcap;			/* Transit capability? */
  struct proto_ospf *po;
  struct fib rtr;		/* Routing tables for routers */
  union options opt;            /* RFC2328 - A.2 */
};

struct proto_ospf
{
  struct proto proto;
  timer *disp_timer;		/* OSPF proto dispatcher */
  unsigned tick;
  struct top_graph *gr;		/* LSA graph */
  slist lsal;			/* List of all LSA's */
  int calcrt;			/* Routing table calculation scheduled? */
  int cleanup;                  /* Should I cleanup after RT calculation? */
  list iface_list;		/* Interfaces we really use */
  list area_list;
  int areano;			/* Number of area I belong to */
  struct fib rtf;		/* Routing table */
  int rfc1583;			/* RFC1583 compatibility */
  int ebit;			/* Did I originate any ext lsa? */
  struct ospf_area *backbone;	/* If exists */
  void *lsab;			/* LSA buffer used when originating router LSAs */
  int lsab_size, lsab_used;
};

struct ospf_iface_patt
{
  struct iface_patt i;
  u32 cost;
  u32 helloint;
  u32 rxmtint;
  u32 pollint;
  u32 inftransdelay;
  u32 priority;
  u32 waitint;
  u32 deadc;
  u32 dead;
  u32 type;
  u32 autype;
  u32 strictnbma;
  u32 stub;
  u32 vid;
#define OSPF_AUTH_NONE 0
#define OSPF_AUTH_SIMPLE 1
#define OSPF_AUTH_CRYPT 2
#define OSPF_AUTH_CRYPT_SIZE 16
  u32 rxbuf;
#define OSPF_RXBUF_NORMAL 0
#define OSPF_RXBUF_LARGE 1
#define OSPF_RXBUF_MINSIZE 256	/* Minimal allowed size */
  list *passwords;
  list nbma_list;
};

int ospf_import_control(struct proto *p, rte **new, ea_list **attrs,
			struct linpool *pool);
struct ea_list *ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool);
void ospf_store_tmp_attrs(struct rte *rt, struct ea_list *attrs);
void schedule_rt_lsa(struct ospf_area *oa);
void schedule_rtcalc(struct proto_ospf *po);
void schedule_net_lsa(struct ospf_iface *ifa);
void ospf_sh_neigh(struct proto *p, char *iff);
void ospf_sh(struct proto *p);
void ospf_sh_iface(struct proto *p, char *iff);

#define EA_OSPF_METRIC1	EA_CODE(EAP_OSPF, 0)
#define EA_OSPF_METRIC2	EA_CODE(EAP_OSPF, 1)
#define EA_OSPF_TAG	EA_CODE(EAP_OSPF, 2)

#include "proto/ospf/rt.h"
#include "proto/ospf/hello.h"
#include "proto/ospf/packet.h"
#include "proto/ospf/iface.h"
#include "proto/ospf/neighbor.h"
#include "proto/ospf/topology.h"
#include "proto/ospf/dbdes.h"
#include "proto/ospf/lsreq.h"
#include "proto/ospf/lsupd.h"
#include "proto/ospf/lsack.h"
#include "proto/ospf/lsalib.h"

#endif /* _BIRD_OSPF_H_ */
Commit	Line	Data
c1f8dc91 OF	1	/*
	2	* BIRD -- OSPF
	3	*
e300066d	4	* (c) 1999--2005 Ondrej Filip <feela@network.cz>
c1f8dc91 OF	5	*
	6	* Can be freely distributed and used under the terms of the GNU GPL.
	7	*/
	8
	9	#ifndef _BIRD_OSPF_H_
	10	#define _BIRD_OSPF_H_
	11
273fd2c1	12	#define MAXNETS 10
e6ea2e37	13	#define OSPF_VLINK_MTU 576 /* RFC2328 - A.1 */
94c42054 OF	14	#define OSPF_MAX_PKT_SIZE 65536
94c42054 OF	15	/*
e300066d OF	16	* RFC 2328 says, maximum packet size is 65535
	17	* This could be too much for small systems, so I
	18	* normally allocate 2*mtu - (I found one cisco
	19	* sending packets mtu+16)
	20	*/
f14032ef OF	21	#ifdef LOCAL_DEBUG
	22	#define OSPF_FORCE_DEBUG 1
	23	#else
	24	#define OSPF_FORCE_DEBUG 0
	25	#endif
	26	#define OSPF_TRACE(flags, msg, args...) do { if ((p->debug & flags) \|\| OSPF_FORCE_DEBUG) \
	27	log(L_TRACE "%s: " msg, p->name , ## args ); } while(0)
6d2b3211	28
8298d780 OZ	29	#define OSPF_PACKET(dumpfn, buffer, msg, args...) \
	30	do { if ((p->debug & D_PACKETS) \|\| OSPF_FORCE_DEBUG) \
	31	{ log(L_TRACE "%s: " msg, p->name, ## args ); dumpfn(p, buffer); } } while(0)
	32
	33
4364b47e OF	34	#include "nest/bird.h"
	35
	36	#include "lib/checksum.h"
6ba36f06 MM	37	#include "lib/ip.h"
6ba36f06 MM	38	#include "lib/lists.h"
30147b89	39	#include "lib/slists.h"
6ba36f06 MM	40	#include "lib/socket.h"
	41	#include "lib/timer.h"
	42	#include "lib/resource.h"
	43	#include "nest/protocol.h"
	44	#include "nest/iface.h"
4364b47e	45	#include "nest/route.h"
a783e259	46	#include "nest/cli.h"
f8f1e1f1	47	#include "nest/locks.h"
4364b47e	48	#include "conf/conf.h"
d345cda5	49	#include "lib/string.h"
6ba36f06	50
5b1a92e6	51	#define OSPF_PROTO 89
aec76c6e	52	#ifndef IPV6
296ecb56	53	#define OSPF_VERSION 2
5b1a92e6 OF	54	#define AllSPFRouters ipa_from_u32(0xe0000005) /* 224.0.0.5 */
5b1a92e6 OF	55	#define AllDRouters ipa_from_u32(0xe0000006) /* 224.0.0.6 */
c6c56264	56	#define DEFAULTDES ipa_from_u32(0)
aec76c6e	57	#else
d631698e	58	#error OSPF for IPv6 is not implemented (mail to Feela <feela@network.cz>)
aec76c6e OF	59	#endif
aec76c6e OF	60
15087574	61
921a93f2	62	#define LSREFRESHTIME 1800 /* 30 minutes */
15087574 OF	63	#define MINLSINTERVAL 5
15087574 OF	64	#define MINLSARRIVAL 1
98ac6176	65	#define LSINFINITY 0xffffff
d631698e	66
62eee823	67	#define DEFAULT_OSPFTICK 1
3b16080c	68	#define DEFAULT_RFC1583 0 /* compatibility with rfc1583 */
8d94a524	69	#define DEFAULT_STUB_COST 1000
d631698e	70
15087574	71
2e10a170 OF	72	struct ospf_config
2e10a170 OF	73	{
c1f8dc91	74	struct proto_config c;
b8f17cf1	75	unsigned tick;
3fa5722d	76	int rfc1583;
b36a0a79 OF	77	list area_list;
	78	};
	79
2e10a170 OF	80	struct nbma_node
2e10a170 OF	81	{
e5b5d18c OF	82	node n;
e5b5d18c OF	83	ip_addr ip;
a190e720	84	int eligible;
e5b5d18c OF	85	};
e5b5d18c OF	86
98ac6176	87	struct area_net_config
2e10a170	88	{
c926eee7	89	node n;
66261211	90	struct prefix px;
c926eee7	91	int hidden;
98ac6176 OF	92	};
	93
	94	struct area_net
	95	{
	96	struct fib_node fn;
	97	int hidden;
66261211	98	int active;
60e04f04	99	u32 metric;
c926eee7 OF	100	};
c926eee7 OF	101
2e10a170 OF	102	struct ospf_area_config
2e10a170 OF	103	{
b36a0a79 OF	104	node n;
	105	u32 areaid;
	106	int stub;
89d6782d	107	list patt_list;
3b16080c	108	list vlink_list;
c926eee7	109	list net_list;
c1f8dc91 OF	110	};
c1f8dc91 OF	111
621ccdfe OF	112	struct obits
	113	{
	114	#ifdef _BIG_ENDIAN
	115	u8 unused2:2;
	116	u8 dc:1;
	117	u8 ea:1;
	118	u8 np:1;
	119	u8 mc:1;
	120	u8 e:1;
	121	u8 unused1:1;
	122	#else
	123	u8 unused1:1;
	124	u8 e:1;
	125	u8 mc:1;
	126	u8 np:1;
	127	u8 ea:1;
	128	u8 dc:1;
	129	u8 unused2:2;
	130	#endif
	131	};
	132
	133	union options
	134	{
	135	u8 byte;
	136	struct obits bit;
	137	};
	138
	139
2e10a170 OF	140	struct ospf_iface
2e10a170 OF	141	{
b11d8a4f	142	node n;
2e10a170	143	struct iface iface; / Nest's iface */
30147b89	144	struct ospf_area *oa;
f8f1e1f1	145	struct object_lock *lock;
2e10a170 OF	146	sock hello_sk; / Hello socket */
	147	sock dr_sk; / For states DR or BACKUP */
	148	sock ip_sk; / IP socket (for DD ...) */
	149	list neigh_list; /* List of neigbours */
9912fa51	150	u32 cost; /* Cost of iface */
7df86c25 OF	151	u32 waitint; /* number of sec before changing state from wait */
	152	u32 rxmtint; /* number of seconds between LSA retransmissions */
	153	u32 pollint; /* Poll interval */
d8c7d9e8	154	u32 dead; /* after "deadint" missing hellos is router dead */
98ac6176 OF	155	u32 vid; /* Id of peer of virtual link */
	156	ip_addr vip; /* IP of peer of virtual link */
	157	struct ospf_area voa; / Area wich the vlink goes through */
9912fa51 OF	158	u16 inftransdelay; /* The estimated number of seconds it takes to
	159	transmit a Link State Update Packet over this
	160	interface. LSAs contained in the update */
5b1a92e6	161	u16 autype;
621ccdfe	162	u16 helloint; /* number of seconds between hello sending */
3e2bd0f1	163	list *passwords;
024c310b OZ	164	u32 csn; /* Last used crypt seq number */
024c310b OZ	165	bird_clock_t csn_use; /* Last time when packet with that CSN was sent */
2e10a170	166	ip_addr drip; /* Designated router */
aec76c6e	167	u32 drid;
2e10a170	168	ip_addr bdrip; /* Backup DR */
aec76c6e	169	u32 bdrid;
2e10a170	170	u8 type; /* OSPF view of type */
96f1b8ba	171	#define OSPF_IT_BCAST 0
4c630a6d OF	172	#define OSPF_IT_NBMA 1
4c630a6d OF	173	#define OSPF_IT_PTP 2
96f1b8ba	174	#define OSPF_IT_VLINK 3
aaaff776	175	#define OSPF_IT_UNDEF 4
2e10a170 OF	176	u8 strictnbma; /* Can I talk with unknown neighbors? */
2e10a170 OF	177	u8 stub; /* Inactive interface */
2e10a170 OF	178	#define OSPF_I_OK 0 /* Everything OK */
	179	#define OSPF_I_MC 1 /* I didn't open MC socket */
	180	#define OSPF_I_IP 2 /* I didn't open IP socet */
	181	u8 state; /* Interface state machine */
96f1b8ba OF	182	#define OSPF_IS_DOWN 0 /* Not working */
	183	#define OSPF_IS_LOOP 1 /* Should never happen */
	184	#define OSPF_IS_WAITING 2 /* Waiting for Wait timer */
	185	#define OSPF_IS_PTP 3 /* PTP operational */
	186	#define OSPF_IS_DROTHER 4 /* I'm on BCAST or NBMA and I'm not DR */
	187	#define OSPF_IS_BACKUP 5 /* I'm BDR */
	188	#define OSPF_IS_DR 6 /* I'm DR */
65112dd2 OF	189	timer wait_timer; / WAIT timer */
65112dd2 OF	190	timer hello_timer; / HELLOINT timer */
a190e720	191	timer poll_timer; / Poll Interval - for NBMA */
5b1a92e6 OF	192	/* Default values for interface parameters */
	193	#define COST_D 10
	194	#define RXMTINT_D 5
249fdef7	195	#define INFTRANSDELAY_D 1
4c630a6d	196	#define PRIORITY_D 1
5b1a92e6	197	#define HELLOINT_D 10
a190e720	198	#define POLLINT_D 20
35ff423d	199	#define DEADC_D 4
2e10a170 OF	200	#define WAIT_DMH 4 /* Value of Wait timer - not found it in RFC
	201	* - using 4*HELLO
	202	*/
9bc1808a	203	struct top_hash_entry nlsa; / Originated net lsa */
2e10a170 OF	204	int orignet; /* Schedule network LSA origination */
2e10a170 OF	205	int fadj; /* Number of full adjacent neigh */
e5b5d18c	206	list nbma_list;
621ccdfe OF	207	u8 priority; /* A router priority for DR election */
621ccdfe OF	208	u8 ioprob;
94c42054	209	u32 rxbuf;
5b1a92e6 OF	210	};
5b1a92e6 OF	211
3e2bd0f1 OF	212	struct ospf_md5
	213	{
	214	u16 zero;
	215	u8 keyid;
	216	u8 len;
	217	u32 csn;
	218	};
	219
	220	union ospf_auth
	221	{
	222	u8 password[8];
	223	struct ospf_md5 md5;
	224	};
	225
2e10a170 OF	226	struct ospf_packet
2e10a170 OF	227	{
296ecb56 OF	228	u8 version;
296ecb56 OF	229	u8 type;
2e10a170 OF	230	#define HELLO_P 1 /* Hello */
	231	#define DBDES_P 2 /* Database description */
	232	#define LSREQ_P 3 /* Link state request */
	233	#define LSUPD_P 4 /* Link state update */
	234	#define LSACK_P 5 /* Link state acknowledgement */
296ecb56 OF	235	u16 length;
	236	u32 routerid;
	237	u32 areaid;
2c971094	238	#define BACKBONE 0
296ecb56 OF	239	u16 checksum;
296ecb56 OF	240	u16 autype;
3e2bd0f1	241	union ospf_auth u;
296ecb56 OF	242	};
296ecb56 OF	243
2e10a170 OF	244	struct ospf_hello_packet
2e10a170 OF	245	{
67ff9130 OF	246	struct ospf_packet ospf_packet;
67ff9130 OF	247	ip_addr netmask;
35ff423d	248	u16 helloint;
296ecb56 OF	249	u8 options;
	250	u8 priority;
	251	u32 deadint;
423230f2 OF	252	ip_addr dr;
423230f2 OF	253	ip_addr bdr;
296ecb56 OF	254	};
296ecb56 OF	255
2e10a170 OF	256	struct immsb
2e10a170 OF	257	{
c11007bc OF	258	#ifdef _BIG_ENDIAN
	259	u8 padding:5;
	260	u8 i:1;
	261	u8 m:1;
	262	u8 ms:1;
	263	#else
04c6319a OF	264	u8 ms:1;
	265	u8 m:1;
	266	u8 i:1;
	267	u8 padding:5;
c11007bc	268	#endif
04c6319a OF	269	};
04c6319a OF	270
2e10a170 OF	271	union imms
2e10a170 OF	272	{
04c6319a OF	273	u8 byte;
	274	struct immsb bit;
	275	};
	276
2e10a170 OF	277	struct ospf_dbdes_packet
2e10a170 OF	278	{
1af66415 OF	279	struct ospf_packet ospf_packet;
1af66415 OF	280	u16 iface_mtu;
2c1d1cc7	281	u8 options;
04c6319a	282	union imms imms; /* I, M, MS bits */
2c1d1cc7 OF	283	#define DBDES_MS 1
	284	#define DBDES_M 2
	285	#define DBDES_I 4
	286	u32 ddseq;
1af66415 OF	287	};
1af66415 OF	288
ce17d4c1	289
2e10a170 OF	290	struct ospf_lsa_header
	291	{
	292	u16 age; /* LS Age */
	293	#define LSA_MAXAGE 3600 /* 1 hour */
	294	#define LSA_CHECKAGE 300 /* 5 minutes */
	295	#define LSA_MAXAGEDIFF 900 /* 15 minutes */
2c1d1cc7	296	u8 options;
ce17d4c1 OF	297	u8 type;
	298	u32 id;
	299	#define LSA_T_RT 1
	300	#define LSA_T_NET 2
	301	#define LSA_T_SUM_NET 3
	302	#define LSA_T_SUM_RT 4
	303	#define LSA_T_EXT 5
2e10a170 OF	304	u32 rt; /* Advertising router */
2e10a170 OF	305	s32 sn; /* LS Sequence number */
ce17d4c1 OF	306	#define LSA_INITSEQNO 0x80000001
ce17d4c1 OF	307	#define LSA_MAXSEQNO 0x7fffffff
2c1d1cc7	308	u16 checksum;
2e10a170	309	u16 length;
ce17d4c1 OF	310	};
ce17d4c1 OF	311
2e10a170 OF	312	struct vebb
2e10a170 OF	313	{
1a61882d OF	314	#ifdef _BIG_ENDIAN
	315	u8 padding:5;
	316	u8 v:1;
	317	u8 e:1;
	318	u8 b:1;
	319	#else
fdb19982 OF	320	u8 b:1;
	321	u8 e:1;
	322	u8 v:1;
	323	u8 padding:5;
1a61882d	324	#endif
fdb19982 OF	325	};
fdb19982 OF	326
2e10a170 OF	327	union veb
2e10a170 OF	328	{
fdb19982 OF	329	u8 byte;
	330	struct vebb bit;
	331	};
	332
2e10a170 OF	333	struct ospf_lsa_rt
2e10a170 OF	334	{
fdb19982	335	union veb veb;
ce17d4c1 OF	336	u8 padding;
	337	u16 links;
	338	};
	339
2e10a170 OF	340	struct ospf_lsa_rt_link
2e10a170 OF	341	{
ce17d4c1 OF	342	u32 id;
	343	u32 data;
	344	u8 type;
	345	#define LSART_PTP 1
	346	#define LSART_NET 2
	347	#define LSART_STUB 3
	348	#define LSART_VLNK 4
	349	u8 notos;
	350	u16 metric;
	351	};
	352
2e10a170 OF	353	struct ospf_lsa_rt_link_tos
2e10a170 OF	354	{ /* Actually we ignore TOS. This is useless */
ce17d4c1 OF	355	u8 tos;
	356	u8 padding;
	357	u16 metric;
2c1d1cc7 OF	358	};
2c1d1cc7 OF	359
2e10a170 OF	360	struct ospf_lsa_net
2e10a170 OF	361	{
c6c56264	362	ip_addr netmask;
dfa9a53a OF	363	};
dfa9a53a OF	364
98ac6176	365	struct ospf_lsa_sum
2e10a170	366	{
c6c56264	367	ip_addr netmask;
ce17d4c1 OF	368	};
ce17d4c1 OF	369
98ac6176 OF	370
98ac6176 OF	371	struct ospf_lsa_ext
2e10a170	372	{
98ac6176 OF	373	ip_addr netmask;
	374	};
	375
	376	struct ospf_lsa_ext_etos
	377	{
	378	#ifdef _BIG_ENDIAN
	379	u8 ebit:1;
	380	u8 tos:7;
	381	u8 padding1;
	382	u16 padding2;
	383	#else
	384	u16 padding2;
	385	u8 padding1;
	386	u8 tos:7;
	387	u8 ebit:1;
	388	#endif
	389	};
	390
	391	#define METRIC_MASK 0x00FFFFFF
	392	struct ospf_lsa_sum_tos
	393	{
	394	#ifdef _BIG_ENDIAN
ce17d4c1	395	u8 tos;
98ac6176 OF	396	u8 padding1;
	397	u16 padding2;
	398	#else
	399	u16 padding2;
	400	u8 padding1;
	401	u8 tos;
	402	#endif
ce17d4c1 OF	403	};
ce17d4c1 OF	404
98ac6176	405	union ospf_lsa_sum_tm
2e10a170	406	{
98ac6176 OF	407	struct ospf_lsa_sum_tos tos;
	408	u32 metric;
	409	};
	410
	411	union ospf_lsa_ext_etm
	412	{
	413	struct ospf_lsa_ext_etos etos;
	414	u32 metric;
ce17d4c1 OF	415	};
ce17d4c1 OF	416
2e10a170 OF	417	struct ospf_lsa_ext_tos
2e10a170 OF	418	{
98ac6176	419	union ospf_lsa_ext_etm etm;
65a9c571	420	ip_addr fwaddr;
ce17d4c1 OF	421	u32 tag;
	422	};
	423
2e10a170 OF	424	struct ospf_lsreq_packet
2e10a170 OF	425	{
6d2b3211 OF	426	struct ospf_packet ospf_packet;
	427	};
	428
2e10a170 OF	429	struct ospf_lsreq_header
2e10a170 OF	430	{
6d2b3211 OF	431	u16 padd1;
	432	u8 padd2;
	433	u8 type;
	434	u32 id;
2e10a170	435	u32 rt; /* Advertising router */
6d2b3211 OF	436	};
6d2b3211 OF	437
2e10a170 OF	438	struct l_lsr_head
2e10a170 OF	439	{
f45fd316 OF	440	node n;
	441	struct ospf_lsreq_header lsh;
	442	};
	443
2e10a170 OF	444	struct ospf_lsupd_packet
2e10a170 OF	445	{
de769e24	446	struct ospf_packet ospf_packet;
2e10a170	447	u32 lsano; /* Number of LSA's */
de769e24 OF	448	};
de769e24 OF	449
2e10a170 OF	450	struct ospf_lsack_packet
2e10a170 OF	451	{
de769e24 OF	452	struct ospf_packet ospf_packet;
	453	};
	454
	455
c76674f0 OF	456	struct ospf_neighbor
c76674f0 OF	457	{
e83dc0d7	458	node n;
035f6acb	459	pool *pool;
903a3f39	460	struct ospf_iface *ifa;
2c1d1cc7	461	u8 state;
c76674f0	462	#define NEIGHBOR_DOWN 0
cd70d934 OF	463	#define NEIGHBOR_ATTEMPT 1
	464	#define NEIGHBOR_INIT 2
	465	#define NEIGHBOR_2WAY 3
c76674f0	466	#define NEIGHBOR_EXSTART 4
903a3f39 OF	467	#define NEIGHBOR_EXCHANGE 5
	468	#define NEIGHBOR_LOADING 6
	469	#define NEIGHBOR_FULL 7
2e10a170	470	timer inactim; / Inactivity timer */
04c6319a	471	union imms imms; /* I, M, Master/slave received */
2e10a170 OF	472	u32 dds; /* DD Sequence number being sent */
2e10a170 OF	473	u32 ddr; /* last Dat Des packet received */
04c6319a	474	union imms myimms; /* I, M Master/slave */
2e10a170 OF	475	u32 rid; /* Router ID */
	476	ip_addr ip; /* IP of it's interface */
	477	u8 priority; /* Priority */
	478	u8 options; /* Options received */
	479	ip_addr dr; /* Neigbour's idea of DR */
	480	ip_addr bdr; /* Neigbour's idea of BDR */
	481	u8 adj; /* built adjacency? */
	482	siterator dbsi; /* Database summary list iterator */
	483	slist lsrql; /* Link state request */
	484	struct top_graph lsrqh; / LSA graph */
30147b89	485	siterator lsrqi;
2e10a170	486	slist lsrtl; /* Link state retransmission list */
30147b89	487	siterator lsrti;
921a93f2	488	struct top_graph *lsrth;
2e10a170 OF	489	void ldbdes; / Last database description packet */
2e10a170 OF	490	timer rxmt_timer; / RXMT timer */
c76ba51a OF	491	list ackl[2];
	492	#define ACKL_DIRECT 0
	493	#define ACKL_DELAY 1
2e10a170	494	timer ackd_timer; / Delayed ack timer */
3e2bd0f1	495	u32 csn; /* Last received crypt seq number (for MD5) */
c76674f0 OF	496	};
c76674f0 OF	497
96f1b8ba	498	/* Definitions for interface state machine */
2e10a170 OF	499	#define ISM_UP 0 /* Interface Up */
	500	#define ISM_WAITF 1 /* Wait timer fired */
	501	#define ISM_BACKS 2 /* Backup seen */
	502	#define ISM_NEICH 3 /* Neighbor change */
	503	#define ISM_LOOP 4 /* Loop indicated */
	504	#define ISM_UNLOOP 5 /* Unloop indicated */
	505	#define ISM_DOWN 6 /* Interface down */
96f1b8ba OF	506
96f1b8ba OF	507	/* Definitions for neighbor state machine */
2e10a170 OF	508	#define INM_HELLOREC 0 /* Hello Received */
	509	#define INM_START 1 /* Neighbor start - for NBMA */
	510	#define INM_2WAYREC 2 /* 2-Way received */
	511	#define INM_NEGDONE 3 /* Negotiation done */
	512	#define INM_EXDONE 4 /* Exchange done */
	513	#define INM_BADLSREQ 5 /* Bad LS Request */
	514	#define INM_LOADDONE 6 /* Load done */
	515	#define INM_ADJOK 7 /* AdjOK? */
	516	#define INM_SEQMIS 8 /* Sequence number mismatch */
	517	#define INM_1WAYREC 9 /* 1-Way */
	518	#define INM_KILLNBR 10 /* Kill Neighbor */
	519	#define INM_INACTTIM 11 /* Inactivity timer */
	520	#define INM_LLDOWN 12 /* Line down */
	521
	522	struct ospf_area
	523	{
8496b2e4	524	node n;
15087574	525	u32 areaid;
70a38319	526	int origrt; /* Rt lsa origination scheduled? */
de30342f	527	struct top_hash_entry rt; / My own router LSA */
dfa9a53a	528	list cand; /* List of candidates for RT calc. */
98ac6176	529	struct fib net_fib; /* Networks to advertise or not */
b36a0a79 OF	530	int stub;
b36a0a79 OF	531	int trcap; /* Transit capability? */
c45f48fb	532	struct proto_ospf *po;
98ac6176	533	struct fib rtr; /* Routing tables for routers */
621ccdfe	534	union options opt; /* RFC2328 - A.2 */
15087574 OF	535	};
15087574 OF	536
2e10a170 OF	537	struct proto_ospf
2e10a170 OF	538	{
4364b47e	539	struct proto proto;
b8f17cf1 OF	540	timer disp_timer; / OSPF proto dispatcher */
b8f17cf1 OF	541	unsigned tick;
86c84d76 OF	542	struct top_graph gr; / LSA graph */
86c84d76 OF	543	slist lsal; /* List of all LSA's */
b8f17cf1	544	int calcrt; /* Routing table calculation scheduled? */
86c84d76	545	int cleanup; /* Should I cleanup after RT calculation? */
4364b47e	546	list iface_list; /* Interfaces we really use */
8496b2e4	547	list area_list;
15087574	548	int areano; /* Number of area I belong to */
98ac6176	549	struct fib rtf; /* Routing table */
fdb19982 OF	550	int rfc1583; /* RFC1583 compatibility */
fdb19982 OF	551	int ebit; /* Did I originate any ext lsa? */
98ac6176	552	struct ospf_area backbone; / If exists */
3d15dcdb OZ	553	void lsab; / LSA buffer used when originating router LSAs */
3d15dcdb OZ	554	int lsab_size, lsab_used;
6ba36f06 MM	555	};
6ba36f06 MM	556
2e10a170 OF	557	struct ospf_iface_patt
2e10a170 OF	558	{
89d6782d	559	struct iface_patt i;
7df86c25 OF	560	u32 cost;
	561	u32 helloint;
	562	u32 rxmtint;
	563	u32 pollint;
	564	u32 inftransdelay;
	565	u32 priority;
	566	u32 waitint;
	567	u32 deadc;
d8c7d9e8	568	u32 dead;
7df86c25 OF	569	u32 type;
	570	u32 autype;
	571	u32 strictnbma;
	572	u32 stub;
98ac6176	573	u32 vid;
3e2bd0f1 OF	574	#define OSPF_AUTH_NONE 0
	575	#define OSPF_AUTH_SIMPLE 1
	576	#define OSPF_AUTH_CRYPT 2
	577	#define OSPF_AUTH_CRYPT_SIZE 16
94c42054 OF	578	u32 rxbuf;
	579	#define OSPF_RXBUF_NORMAL 0
	580	#define OSPF_RXBUF_LARGE 1
	581	#define OSPF_RXBUF_MINSIZE 256 /* Minimal allowed size */
3e2bd0f1	582	list *passwords;
e5b5d18c	583	list nbma_list;
89d6782d OF	584	};
89d6782d OF	585
b8f17cf1	586	int ospf_import_control(struct proto p, rte new, ea_list *attrs,
2e10a170	587	struct linpool *pool);
5919c66e MM	588	struct ea_list ospf_make_tmp_attrs(struct rte rt, struct linpool *pool);
5919c66e MM	589	void ospf_store_tmp_attrs(struct rte rt, struct ea_list attrs);
70a38319	590	void schedule_rt_lsa(struct ospf_area *oa);
b8f17cf1	591	void schedule_rtcalc(struct proto_ospf *po);
b9ed99f7	592	void schedule_net_lsa(struct ospf_iface *ifa);
c4f0f014	593	void ospf_sh_neigh(struct proto p, char iff);
4ab4e977	594	void ospf_sh(struct proto *p);
c4f0f014	595	void ospf_sh_iface(struct proto p, char iff);
4364b47e	596
5919c66e MM	597	#define EA_OSPF_METRIC1 EA_CODE(EAP_OSPF, 0)
	598	#define EA_OSPF_METRIC2 EA_CODE(EAP_OSPF, 1)
	599	#define EA_OSPF_TAG EA_CODE(EAP_OSPF, 2)
	600
98ac6176	601	#include "proto/ospf/rt.h"
4364b47e OF	602	#include "proto/ospf/hello.h"
	603	#include "proto/ospf/packet.h"
	604	#include "proto/ospf/iface.h"
	605	#include "proto/ospf/neighbor.h"
	606	#include "proto/ospf/topology.h"
	607	#include "proto/ospf/dbdes.h"
6d2b3211	608	#include "proto/ospf/lsreq.h"
f45fd316 OF	609	#include "proto/ospf/lsupd.h"
	610	#include "proto/ospf/lsack.h"
	611	#include "proto/ospf/lsalib.h"
6ba36f06	612
c1f8dc91	613	#endif /* _BIRD_OSPF_H_ */