diff options
| author | Renato Westphal <renato@opensourcerouting.org> | 2023-03-01 17:31:56 -0300 |
|---|---|---|
| committer | Renato Westphal <renato@opensourcerouting.org> | 2023-03-02 19:38:03 -0300 |
| commit | 3a94ed56964097e35c932bafce0c164b9323c12d (patch) | |
| tree | 7c89e28fc1491d4b72e808857f81c2c002e57f94 /ospf6d/ospf6_lsdb.c | |
| parent | 5cbcc459aec36faa38d84a62cd57789bdf8f2882 (diff) | |
ospf6d: fix duplicate inter-area-prefix-LSAs after exiting from GR mode
An ABR that is originating inter-area-prefix-LSAs should take into
account the fact that there might be self-originated LSAs for the
same prefixes that were originated prior to a graceful restart. When
that happens, the previous LSA-IDs should be reused to avoid having
duplicate LSAs.
Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
Diffstat (limited to 'ospf6d/ospf6_lsdb.c')
| -rw-r--r-- | ospf6d/ospf6_lsdb.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/ospf6d/ospf6_lsdb.c b/ospf6d/ospf6_lsdb.c index 0221102b59..586183731c 100644 --- a/ospf6d/ospf6_lsdb.c +++ b/ospf6d/ospf6_lsdb.c @@ -13,8 +13,10 @@ #include "vty.h" #include "ospf6_proto.h" +#include "ospf6_area.h" #include "ospf6_lsa.h" #include "ospf6_lsdb.h" +#include "ospf6_abr.h" #include "ospf6_asbr.h" #include "ospf6_route.h" #include "ospf6d.h" @@ -216,6 +218,31 @@ struct ospf6_lsa *ospf6_find_external_lsa(struct ospf6 *ospf6, struct prefix *p) return lsa; } +struct ospf6_lsa *ospf6_find_inter_prefix_lsa(struct ospf6 *ospf6, + struct ospf6_area *area, + struct prefix *p) +{ + struct ospf6_lsa *lsa; + uint16_t type = htons(OSPF6_LSTYPE_INTER_PREFIX); + + for (ALL_LSDB_TYPED_ADVRTR(area->lsdb, type, ospf6->router_id, lsa)) { + struct ospf6_inter_prefix_lsa *prefix_lsa; + struct prefix prefix; + + prefix_lsa = + (struct ospf6_inter_prefix_lsa *)OSPF6_LSA_HEADER_END( + lsa->header); + prefix.family = AF_INET6; + prefix.prefixlen = prefix_lsa->prefix.prefix_length; + ospf6_prefix_in6_addr(&prefix.u.prefix6, prefix_lsa, + &prefix_lsa->prefix); + if (prefix_same(p, &prefix)) + return lsa; + } + + return NULL; +} + struct ospf6_lsa *ospf6_lsdb_lookup_next(uint16_t type, uint32_t id, uint32_t adv_router, struct ospf6_lsdb *lsdb) |