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0ea8fb4abe
Now it shows a distance, option to change showing reachable/all network nodes and better handling of AS-external LSAs in multiple areas. The command 'show ospf topology' was changed to not show stubnets in both OSPFv2 and OSPFv3 (previously it displayed stubnets in OSPFv2).
95 lines
3.4 KiB
C
95 lines
3.4 KiB
C
/*
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* BIRD -- OSPF
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*
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* (c) 1999--2004 Ondrej Filip <feela@network.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#ifndef _BIRD_OSPF_TOPOLOGY_H_
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#define _BIRD_OSPF_TOPOLOGY_H_
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struct top_hash_entry
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{ /* Index for fast mapping (type,rtrid,LSid)->vertex */
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snode n;
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node cn; /* For adding into list of candidates
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in intra-area routing table calculation */
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struct top_hash_entry *next; /* Next in hash chain */
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struct ospf_lsa_header lsa;
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u32 domain; /* Area ID for area-wide LSAs, Iface ID for link-wide LSAs */
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// struct ospf_area *oa;
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void *lsa_body;
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bird_clock_t inst_t; /* Time of installation into DB */
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ip_addr nh; /* Next hop */
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ip_addr lb; /* In OSPFv2, link back address. In OSPFv3, any global address in the area useful for vlinks */
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struct ospf_iface *nhi; /* Next hop interface - valid only in ospf_rt_spf()*/
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#ifdef OSPFv3
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u32 lb_id; /* Interface ID of link back iface (for bcast or NBMA networks) */
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#endif
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u32 dist; /* Distance from the root */
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u16 ini_age;
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u8 color;
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#define OUTSPF 0
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#define CANDIDATE 1
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#define INSPF 2
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u8 padding;
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};
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struct top_graph
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{
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pool *pool; /* Pool we allocate from */
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slab *hash_slab; /* Slab for hash entries */
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struct top_hash_entry **hash_table; /* Hashing (modelled a`la fib) */
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unsigned int hash_size;
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unsigned int hash_order;
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unsigned int hash_mask;
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unsigned int hash_entries;
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unsigned int hash_entries_min, hash_entries_max;
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};
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struct top_graph *ospf_top_new(pool *);
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void ospf_top_free(struct top_graph *);
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void ospf_top_dump(struct top_graph *, struct proto *);
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u32 ospf_lsa_domain(u32 type, struct ospf_iface *ifa);
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struct top_hash_entry *ospf_hash_find_header(struct top_graph *f, u32 domain,
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struct ospf_lsa_header *h);
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struct top_hash_entry *ospf_hash_get_header(struct top_graph *f, u32 domain,
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struct ospf_lsa_header *h);
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struct top_hash_entry *ospf_hash_find(struct top_graph *, u32 domain, u32 lsa, u32 rtr,
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u32 type);
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struct top_hash_entry *ospf_hash_get(struct top_graph *, u32 domain, u32 lsa, u32 rtr,
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u32 type);
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void ospf_hash_delete(struct top_graph *, struct top_hash_entry *);
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void originate_rt_lsa(struct ospf_area *oa);
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void update_rt_lsa(struct ospf_area *oa);
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void originate_net_lsa(struct ospf_iface *ifa);
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void update_net_lsa(struct ospf_iface *ifa);
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void update_link_lsa(struct ospf_iface *ifa);
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int can_flush_lsa(struct proto_ospf *po);
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int max_ext_lsa(unsigned pxlen);
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void originate_ext_lsa(net * n, rte * e, struct proto_ospf *po,
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struct ea_list *attrs);
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void flush_ext_lsa(net *n, struct proto_ospf *po);
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void check_sum_lsa(struct proto_ospf *po, ort *nf, int);
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void originate_sum_lsa(struct ospf_area *oa, struct fib_node *fn, int type, int metric, u32 options);
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void flush_sum_lsa(struct ospf_area *oa, struct fib_node *fn, int type);
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#ifdef OSPFv2
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struct top_hash_entry * ospf_hash_find_net(struct top_graph *f, u32 domain, u32 lsa);
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static inline struct top_hash_entry *
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ospf_hash_find_rt(struct top_graph *f, u32 domain, u32 rtr)
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{
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return ospf_hash_find(f, domain, rtr, rtr, LSA_T_RT);
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}
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#else /* OSPFv3 */
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struct top_hash_entry * ospf_hash_find_rt(struct top_graph *f, u32 domain, u32 rtr);
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struct top_hash_entry * ospf_hash_find_rt_first(struct top_graph *f, u32 domain, u32 rtr);
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struct top_hash_entry * ospf_hash_find_rt_next(struct top_hash_entry *e);
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#endif
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#endif /* _BIRD_OSPF_TOPOLOGY_H_ */
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