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Merge pull request #9016 from LabNConsulting/chopps/ospf6d-fix-backlink-chk

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ospf6d: fix backlink check
This commit is contained in:
Igor Ryzhov 2021-07-09 15:46:43 +03:00 committed by GitHub
commit d0f980f8bb
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 16 additions and 12 deletions
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28
ospf6d/ospf6_spf.c
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@ -225,21 +225,25 @@ static char *ospf6_lsdesc_backlink(struct ospf6_lsa *lsa, caddr_t lsdesc,
assert(!(OSPF6_LSA_IS_TYPE(NETWORK, lsa)
&& VERTEX_IS_TYPE(NETWORK, v)));
if (OSPF6_LSA_IS_TYPE(NETWORK, lsa)
&& NETWORK_LSDESC_GET_NBR_ROUTERID(backlink)
== v->lsa->header->adv_router)
found = backlink;
else if (VERTEX_IS_TYPE(NETWORK, v)
&& ROUTER_LSDESC_IS_TYPE(TRANSIT_NETWORK, backlink)
&& ROUTER_LSDESC_GET_NBR_ROUTERID(backlink)
== v->lsa->header->adv_router
&& ROUTER_LSDESC_GET_NBR_IFID(backlink)
== ntohl(v->lsa->header->id))
found = backlink;
else {
if (OSPF6_LSA_IS_TYPE(NETWORK, lsa)) {
if (NETWORK_LSDESC_GET_NBR_ROUTERID(backlink)
== v->lsa->header->adv_router)
found = backlink;
} else if (VERTEX_IS_TYPE(NETWORK, v)) {
if (ROUTER_LSDESC_IS_TYPE(TRANSIT_NETWORK, backlink)
&& ROUTER_LSDESC_GET_NBR_ROUTERID(backlink)
== v->lsa->header->adv_router
&& ROUTER_LSDESC_GET_NBR_IFID(backlink)
== ntohl(v->lsa->header->id))
found = backlink;
} else {
assert(OSPF6_LSA_IS_TYPE(ROUTER, lsa)
&& VERTEX_IS_TYPE(ROUTER, v));
if (!ROUTER_LSDESC_IS_TYPE(POINTTOPOINT, backlink)
|| !ROUTER_LSDESC_IS_TYPE(POINTTOPOINT, lsdesc))
continue;
if (ROUTER_LSDESC_GET_NBR_IFID(backlink)
!= ROUTER_LSDESC_GET_IFID(lsdesc)
|| ROUTER_LSDESC_GET_NBR_IFID(lsdesc)