bird/proto/ospf/topology.h
Ondrej Filip 86c84d76b7 Huge OSPF database redesign. Since now, all LSAs of all areas
are in single database. This avoids duplication of external LSAs and
fixes bug in external LSA distribution.
2004-07-15 16:37:52 +00:00

73 lines
2.3 KiB
C

/*
* BIRD -- OSPF
*
* (c) 1999--2004 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#ifndef _BIRD_OSPF_TOPOLOGY_H_
#define _BIRD_OSPF_TOPOLOGY_H_
struct top_hash_entry
{ /* Index for fast mapping (type,rtrid,LSid)->vertex */
snode n;
node cn; /* For adding into list of candidates
* in intra-area routing table
* calculation
*/
struct top_hash_entry *next; /* Next in hash chain */
struct ospf_lsa_header lsa;
struct ospf_area *oa;
void *lsa_body;
bird_clock_t inst_t; /* Time of installation into DB */
ip_addr nh; /* Next hop */
ip_addr lb; /* Link back */
struct iface *nhi;
u32 dist; /* Distance from the root */
u16 ini_age;
u8 color;
#define OUTSPF 0
#define CANDIDATE 1
#define INSPF 2
u8 padding;
};
struct top_graph
{
pool *pool; /* Pool we allocate from */
slab *hash_slab; /* Slab for hash entries */
struct top_hash_entry **hash_table; /* Hashing (modelled a`la fib) */
unsigned int hash_size;
unsigned int hash_order;
unsigned int hash_mask;
unsigned int hash_entries;
unsigned int hash_entries_min, hash_entries_max;
};
struct top_graph *ospf_top_new(pool *);
void ospf_top_free(struct top_graph *);
void ospf_top_dump(struct top_graph *, struct proto *);
struct top_hash_entry *ospf_hash_find_header(struct top_graph *f, u32 areaid,
struct ospf_lsa_header *h);
struct top_hash_entry *ospf_hash_get_header(struct top_graph *f, struct ospf_area *oa,
struct ospf_lsa_header *h);
struct top_hash_entry *ospf_hash_find(struct top_graph *, u32 areaid, u32 lsa, u32 rtr,
u32 type);
struct top_hash_entry *ospf_hash_get(struct top_graph *, struct ospf_area *oa, u32 lsa, u32 rtr,
u32 type);
void ospf_hash_delete(struct top_graph *, struct top_hash_entry *);
void originate_rt_lsa(struct ospf_area *oa);
void originate_net_lsa(struct ospf_iface *ifa);
int can_flush_lsa(struct proto_ospf *po);
int max_ext_lsa(unsigned pxlen);
void originate_ext_lsa(net * n, rte * e, struct proto_ospf *po,
struct ea_list *attrs);
void check_sum_lsa(struct proto_ospf *po, ort *nf, int);
void originate_sum_lsa(struct ospf_area *oa, struct fib_node *fn, int type, int metric);
void flush_sum_lsa(struct ospf_area *oa, struct fib_node *fn, int type);
#endif /* _BIRD_OSPF_TOPOLOGY_H_ */