95 lines
3.5 KiB
C
95 lines
3.5 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;
|
|
u32 domain; /* Area ID for area-wide LSAs, Iface ID for link-wide LSAs */
|
|
// struct ospf_area *oa;
|
|
void *lsa_body;
|
|
bird_clock_t inst_t; /* Time of installation into DB */
|
|
struct mpnh *nhs; /* Computed nexthops - valid only in ospf_rt_spf() */
|
|
ip_addr lb; /* In OSPFv2, link back address. In OSPFv3, any global address in the area useful for vlinks */
|
|
#ifdef OSPFv3
|
|
u32 lb_id; /* Interface ID of link back iface (for bcast or NBMA networks) */
|
|
#endif
|
|
u32 dist; /* Distance from the root */
|
|
u16 ini_age;
|
|
u8 color;
|
|
#define OUTSPF 0
|
|
#define CANDIDATE 1
|
|
#define INSPF 2
|
|
u8 nhs_reuse; /* Whether nhs nodes can be reused during merging.
|
|
See a note in rt.c:merge_nexthops() */
|
|
};
|
|
|
|
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 *);
|
|
u32 ospf_lsa_domain(u32 type, struct ospf_iface *ifa);
|
|
struct top_hash_entry *ospf_hash_find_header(struct top_graph *f, u32 domain,
|
|
struct ospf_lsa_header *h);
|
|
struct top_hash_entry *ospf_hash_get_header(struct top_graph *f, u32 domain,
|
|
struct ospf_lsa_header *h);
|
|
|
|
struct top_hash_entry *ospf_hash_find(struct top_graph *, u32 domain, u32 lsa, u32 rtr,
|
|
u32 type);
|
|
struct top_hash_entry *ospf_hash_get(struct top_graph *, u32 domain, 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 update_rt_lsa(struct ospf_area *oa);
|
|
void originate_net_lsa(struct ospf_iface *ifa);
|
|
void update_net_lsa(struct ospf_iface *ifa);
|
|
void update_link_lsa(struct ospf_iface *ifa);
|
|
int can_flush_lsa(struct proto_ospf *po);
|
|
|
|
void originate_sum_net_lsa(struct ospf_area *oa, struct fib_node *fn, int metric);
|
|
void originate_sum_rt_lsa(struct ospf_area *oa, struct fib_node *fn, int metric, u32 options UNUSED);
|
|
void flush_sum_lsa(struct ospf_area *oa, struct fib_node *fn, int type);
|
|
void originate_ext_lsa(struct ospf_area *oa, struct fib_node *fn, int src, u32 metric, ip_addr fwaddr, u32 tag, int pbit);
|
|
void flush_ext_lsa(struct ospf_area *oa, struct fib_node *fn, int nssa);
|
|
|
|
|
|
#ifdef OSPFv2
|
|
struct top_hash_entry * ospf_hash_find_net(struct top_graph *f, u32 domain, u32 lsa);
|
|
|
|
static inline struct top_hash_entry *
|
|
ospf_hash_find_rt(struct top_graph *f, u32 domain, u32 rtr)
|
|
{
|
|
return ospf_hash_find(f, domain, rtr, rtr, LSA_T_RT);
|
|
}
|
|
|
|
#else /* OSPFv3 */
|
|
struct top_hash_entry * ospf_hash_find_rt(struct top_graph *f, u32 domain, u32 rtr);
|
|
struct top_hash_entry * ospf_hash_find_rt_first(struct top_graph *f, u32 domain, u32 rtr);
|
|
struct top_hash_entry * ospf_hash_find_rt_next(struct top_hash_entry *e);
|
|
#endif
|
|
|
|
|
|
#endif /* _BIRD_OSPF_TOPOLOGY_H_ */
|