diff options
Diffstat (limited to 'proto/ospf/lsalib.c')
| -rw-r--r-- | proto/ospf/lsalib.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/proto/ospf/lsalib.c b/proto/ospf/lsalib.c index 46b6d09..cd29421 100644 --- a/proto/ospf/lsalib.c +++ b/proto/ospf/lsalib.c @@ -1,7 +1,7 @@ /* * BIRD -- OSPF * - * (c) 1999-2000 Ondrej Filip <feela@network.cz> + * (c) 1999 - 2000 Ondrej Filip <feela@network.cz> * * Can be freely distributed and used under the terms of the GNU GPL. */ @@ -18,6 +18,18 @@ flush_lsa(struct top_hash_entry *en, struct ospf_area *oa) ospf_hash_delete(oa->gr,en); } +/** + * ospf_age + * @oa: ospf area + * + * This function is periodicaly invoked from area_disp(). It computes new + * age of all LSAs and old (@age is higher than %LSA_MAXAGE) are flushed + * when ever possible. If some LSA originated by router itself is older + * than %LSREFRESHTIME new instance is originated. + * + * RFC says, that router should check checksum of every LSA to detect some + * hardware problem. BIRD does not do it to minimalize CPU utilization. + */ void ospf_age(struct ospf_area *oa) { @@ -379,11 +391,21 @@ lsa_comp(struct ospf_lsa_header *l1, struct ospf_lsa_header *l2) return CMP_SAME; } -/* LSA can be temporarrily, but body must be mb_alloced. */ +/** + * lsa_install_new - install new LSA into database + * @lsa: LSA header + * @body pointer to LSA body + * @oa: current ospf_area + * + * This function ensures installing new LSA into LSA database. Old instance is + * replaced. Several actions are taken to detec if new routing table + * calculation is necessary. This is described in 13.2 of RFC 2328. + */ struct top_hash_entry * -lsa_install_new(struct ospf_lsa_header *lsa, void *body, struct ospf_area *oa, - struct proto *p) +lsa_install_new(struct ospf_lsa_header *lsa, void *body, struct ospf_area *oa) { + /* LSA can be temporarrily, but body must be mb_alloced. */ + struct proto *p=&oa->po->proto; int change=0; unsigned i; struct top_hash_entry *en; |