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ospf6d: abr summary advertise best route

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ABR summary should contain best intra prefix LSA.
There might be a case where intra-prefix route with different
cost from different advertising router present, summary
advertisement should only consider best intra-prefix route.

A route which is marked for remove, while purging the route's
ABR summary LSA also remove summary route from the summary
table.

Ticket:CM-22665
Testing Done:
Validate on ABR topology, intra-prefix route with
different cost, a higher cost intra-prefix route skip from sending
ABR summary LSA.

Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
This commit is contained in:
Chirag Shah 2018-11-15 17:05:58 -08:00
parent 6b2ddd675c
commit 276aa26556
1 changed files with 17 additions and 2 deletions
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19
ospf6d/ospf6_abr.c
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@ -240,6 +240,20 @@ int ospf6_abr_originate_summary_to_area(struct ospf6_route *route,
} }
} }
if (route->path.origin.type ==
htons(OSPF6_LSTYPE_INTRA_PREFIX)) {
if (!CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST)) {
if (is_debug) {
prefix2str(&route->prefix, buf,
sizeof(buf));
zlog_debug("%s: intra-prefix route %s with cost %u is not best, ignore."
, __PRETTY_FUNCTION__, buf,
route->path.cost);
}
return 0;
}
}
if (is_debug) { if (is_debug) {
prefix2str(&route->prefix, buf, sizeof(buf)); prefix2str(&route->prefix, buf, sizeof(buf));
zlog_debug("Originating summary in area %s for %s cost %u", zlog_debug("Originating summary in area %s for %s cost %u",
@ -271,9 +285,10 @@ int ospf6_abr_originate_summary_to_area(struct ospf6_route *route,
ospf6_abr_delete_route(route, summary, ospf6_abr_delete_route(route, summary,
summary_table, old); summary_table, old);
} }
} else if (old) } else if (old) {
ospf6_route_remove(summary, summary_table);
ospf6_lsa_purge(old); ospf6_lsa_purge(old);
}
return 0; return 0;
} }