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zebra: skip un-installed recursive match

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Do less work when resolving a recursive route: just skip
nexthops if the resolving route is not installed.

Signed-off-by: Mark Stapp <mjs@voltanet.io>
This commit is contained in:
Mark Stapp 2020-05-26 17:35:20 -04:00
parent 0e8542eef3
commit 92ad0c558c
1 changed files with 10 additions and 6 deletions
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16
zebra/zebra_nhg.c
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@ -1934,12 +1934,19 @@ static int nexthop_active(afi_t afi, struct route_entry *re,
resolved = 0;
/* Only useful if installed */
if (!CHECK_FLAG(match->status, ROUTE_ENTRY_INSTALLED)) {
if (IS_ZEBRA_DEBUG_NHG_DETAIL)
zlog_debug("%s: match %p (%u) not installed",
__func__, match,
match->nhe->id);
goto done_with_match;
}
/* Examine installed nexthops */
nhg = &match->nhe->nhg;
for (ALL_NEXTHOPS_PTR(nhg, newhop)) {
if (!CHECK_FLAG(match->status,
ROUTE_ENTRY_INSTALLED))
continue;
if (!nexthop_valid_resolve(nexthop, newhop))
continue;
@ -1960,9 +1967,6 @@ static int nexthop_active(afi_t afi, struct route_entry *re,
goto done_with_match;
for (ALL_NEXTHOPS_PTR(nhg, newhop)) {
if (!CHECK_FLAG(match->status,
ROUTE_ENTRY_INSTALLED))
continue;
if (!nexthop_valid_resolve(nexthop, newhop))
continue;