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ospf6d: stop looping thru same Inter-Area Router LSAs

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Processing loop uncovered when there are multiple ABRs also
acting as ASBRs into the same area in ospf6.  The problem
was that when looking thru the list of Inter-area router
entries, if the current entry being processed matched, it
still merged next-hops and re-initiated the process.  In
this fix, if the route/path matches and the next-hops also
match, there is no need to re-initiate the examine process.

Ticket: CM-28900
Signed-off-by: Don Slice <dslice@cumulusnetworks.com>
This commit is contained in:
Don Slice 2020-04-02 17:50:53 +00:00
parent 43086e6a56
commit 14ff96e67d
1 changed files with 17 additions and 3 deletions
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20
ospf6d/ospf6_abr.c
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@ -1200,9 +1200,23 @@ void ospf6_abr_examin_summary(struct ospf6_lsa *lsa, struct ospf6_area *oa)
listcount(old_route->nh_list));
}
} else {
/* adv. router exists in the list, update the nhs */
list_delete_all_node(o_path->nh_list);
ospf6_copy_nexthops(o_path->nh_list, route->nh_list);
struct ospf6_route *tmp_route = ospf6_route_create();
ospf6_copy_nexthops(tmp_route->nh_list,
o_path->nh_list);
if (ospf6_route_cmp_nexthops(tmp_route, route) != 0) {
/* adv. router exists in the list, update nhs */
list_delete_all_node(o_path->nh_list);
ospf6_copy_nexthops(o_path->nh_list,
route->nh_list);
ospf6_route_delete(tmp_route);
} else {
/* adv. router has no change in nhs */
old_entry_updated = false;
ospf6_route_delete(tmp_route);
continue;
}
}
if (is_debug)