diff options
Diffstat (limited to 'proto/ospf/topology.h')
| -rw-r--r-- | proto/ospf/topology.h | 107 |
1 files changed, 66 insertions, 41 deletions
diff --git a/proto/ospf/topology.h b/proto/ospf/topology.h index cb876487..e4ea79f7 100644 --- a/proto/ospf/topology.h +++ b/proto/ospf/topology.h @@ -2,6 +2,8 @@ * BIRD -- OSPF * * (c) 1999--2004 Ondrej Filip <feela@network.cz> + * (c) 2009--2014 Ondrej Zajicek <santiago@crfreenet.org> + * (c) 2009--2014 CZ.NIC z.s.p.o. * * Can be freely distributed and used under the terms of the GNU GPL. */ @@ -16,79 +18,102 @@ struct top_hash_entry in intra-area routing table calculation */ struct top_hash_entry *next; /* Next in hash chain */ struct ospf_lsa_header lsa; + u16 lsa_type; /* lsa.type processed and converted to common values */ + u16 init_age; /* Initial value for lsa.age during inst_time */ 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 */ + void *lsa_body; /* May be NULL if LSA was flushed but hash entry was kept */ + void *next_lsa_body; /* For postponed LSA origination */ + u16 next_lsa_blen; /* For postponed LSA origination */ + u16 next_lsa_opts; /* For postponed LSA origination */ + bird_clock_t inst_time; /* Time of installation into DB */ + struct ort *nf; /* Reference fibnode for sum and ext LSAs, NULL for otherwise */ 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; + int ret_count; /* Number of retransmission lists referencing the entry */ u8 color; #define OUTSPF 0 #define CANDIDATE 1 #define INSPF 2 + u8 rtcalc; /* LSA generated during RT calculation (LSA_RTCALC or LSA_STALE)*/ u8 nhs_reuse; /* Whether nhs nodes can be reused during merging. See a note in rt.c:merge_nexthops() */ }; +#define LSA_RTCALC 1 +#define LSA_STALE 2 + 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; + uint ospf2; /* Whether it is for OSPFv2 or OSPFv3 */ + uint hash_size; + uint hash_order; + uint hash_mask; + uint hash_entries; + uint hash_entries_min, hash_entries_max; +}; + +struct ospf_new_lsa +{ + u16 type; + u32 dom; + u32 id; + u16 opts; + u16 length; + struct ospf_iface *ifa; + struct ort *nf; }; 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); + +struct top_hash_entry * ospf_install_lsa(struct ospf_proto *p, struct ospf_lsa_header *lsa, u32 type, u32 domain, void *body); +struct top_hash_entry * ospf_originate_lsa(struct ospf_proto *p, struct ospf_new_lsa *lsa); +void ospf_advance_lsa(struct ospf_proto *p, struct top_hash_entry *en, struct ospf_lsa_header *lsa, u32 type, u32 domain, void *body); +void ospf_flush_lsa(struct ospf_proto *p, struct top_hash_entry *en); +void ospf_update_lsadb(struct ospf_proto *p); + +static inline void ospf_flush2_lsa(struct ospf_proto *p, struct top_hash_entry **en) +{ if (*en) { ospf_flush_lsa(p, *en); *en = NULL; } } + +void ospf_originate_sum_net_lsa(struct ospf_proto *p, struct ospf_area *oa, ort *nf, int metric); +void ospf_originate_sum_rt_lsa(struct ospf_proto *p, struct ospf_area *oa, ort *nf, int metric, u32 options); +void ospf_originate_ext_lsa(struct ospf_proto *p, struct ospf_area *oa, ort *nf, u8 rtcalc, u32 metric, u32 ebit, ip_addr fwaddr, u32 tag, int pbit); + +void ospf_rt_notify(struct proto *P, rtable *tbl, net *n, rte *new, rte *old, ea_list *attrs); +void ospf_update_topology(struct ospf_proto *p); + +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); +static inline struct top_hash_entry * ospf_hash_find_entry(struct top_graph *f, struct top_hash_entry *en) +{ return ospf_hash_find(f, en->domain, en->lsa.id, en->lsa.rt, en->lsa_type); } + +static inline struct top_hash_entry * ospf_hash_get_entry(struct top_graph *f, struct top_hash_entry *en) +{ return ospf_hash_get(f, en->domain, en->lsa.id, en->lsa.rt, en->lsa_type); } +struct top_hash_entry * ospf_hash_find_rt(struct top_graph *f, u32 domain, u32 rtr); +struct top_hash_entry * ospf_hash_find_rt3_first(struct top_graph *f, u32 domain, u32 rtr); +struct top_hash_entry * ospf_hash_find_rt3_next(struct top_hash_entry *e); -#ifdef OSPFv2 -struct top_hash_entry * ospf_hash_find_net(struct top_graph *f, u32 domain, u32 lsa); +struct top_hash_entry * ospf_hash_find_net2(struct top_graph *f, u32 domain, u32 id); +/* In OSPFv2, id is network IP prefix (lsa.id) while lsa.rt field is unknown + In OSPFv3, id is lsa.rt of DR while nif is neighbor iface id (lsa.id) */ static inline struct top_hash_entry * -ospf_hash_find_rt(struct top_graph *f, u32 domain, u32 rtr) +ospf_hash_find_net(struct top_graph *f, u32 domain, u32 id, u32 nif) { - return ospf_hash_find(f, domain, rtr, rtr, LSA_T_RT); + return f->ospf2 ? + ospf_hash_find_net2(f, domain, id) : + ospf_hash_find(f, domain, nif, id, LSA_T_NET); } -#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_ */ |