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Merge pull request #5886 from sworleys/Trust-Kernel-Direct-Routes

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zebra: trust directly connected kernel/system routes
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Mark Stapp 2020-03-03 12:10:35 -05:00 committed by GitHub
commit c7f116008d
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1 changed files with 10 additions and 1 deletions
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11
zebra/zebra_nhg.c
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@ -1637,7 +1637,16 @@ static unsigned nexthop_active_check(struct route_node *rn,
switch (nexthop->type) { switch (nexthop->type) {
case NEXTHOP_TYPE_IFINDEX: case NEXTHOP_TYPE_IFINDEX:
ifp = if_lookup_by_index(nexthop->ifindex, nexthop->vrf_id); ifp = if_lookup_by_index(nexthop->ifindex, nexthop->vrf_id);
if (ifp && if_is_operative(ifp)) /*
* If the interface exists and its operative or its a kernel
* route and interface is up, its active. We trust kernel routes
* to be good.
*/
if (ifp
&& (if_is_operative(ifp)
|| (if_is_up(ifp)
&& (re->type == ZEBRA_ROUTE_KERNEL
|| re->type == ZEBRA_ROUTE_SYSTEM))))
SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE);
else else
UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE);