Commit 18dff8e0 authored by Michał Kępień's avatar Michał Kępień

Merge branch '1059-prevent-tcp-failures-from-affecting-edns-stats' into 'master'

Prevent TCP failures from affecting EDNS stats

See merge request !2501
parents 7346e6d3 36d3c66e
Pipeline #24435 passed with stages
in 1 minute and 53 seconds
5310. [bug] TCP failures were affecting EDNS statistics. [GL #1059]
5309. [placeholder]
5308. [bug] Don't log DNS_R_UNCHANGED from sync_secure_journal()
......
......@@ -241,6 +241,18 @@ fi
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`
n=`expr $n + 1`
echo_i "checking that TCP failures do not influence EDNS statistics in the ADB ($n)"
ret=0
rndc_dumpdb ns1 -adb || ret=1
timeouts512=`sed -n "s|.*10\.53\.0\.7.*\[edns \([0-9/][0-9/]*\).*|\1|p" ns1/named_dump.db.test$n | awk -F/ '{print $NF}'`
if [ $timeouts512 -ne 0 ]; then
echo_i "512-byte EDNS timeouts according to ADB: $timeouts512, expected: 0"
ret=1
fi
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`
$PERL $SYSTEMTESTTOP/stop.pl --use-rndc --port ${CONTROLPORT} legacy ns1
copy_setports ns1/named2.conf.in ns1/named.conf
$PERL $SYSTEMTESTTOP/start.pl --noclean --restart --port ${PORT} legacy ns1
......
......@@ -1142,6 +1142,25 @@ resquery_destroy(resquery_t **queryp) {
empty_bucket(res);
}
/*%
* Update EDNS statistics for a server after not getting a response to a UDP
* query sent to it.
*/
static void
update_edns_stats(resquery_t *query) {
fetchctx_t *fctx = query->fctx;
if ((query->options & DNS_FETCHOPT_TCP) != 0) {
return;
}
if ((query->options & DNS_FETCHOPT_NOEDNS0) == 0) {
dns_adb_ednsto(fctx->adb, query->addrinfo, query->udpsize);
} else {
dns_adb_timeout(fctx->adb, query->addrinfo);
}
}
static void
fctx_cancelquery(resquery_t **queryp, dns_dispatchevent_t **deventp,
isc_time_t *finish, bool no_response,
......@@ -1202,11 +1221,7 @@ fctx_cancelquery(resquery_t **queryp, dns_dispatchevent_t **deventp,
uint32_t value;
uint32_t mask;
if ((query->options & DNS_FETCHOPT_NOEDNS0) == 0)
dns_adb_ednsto(fctx->adb, query->addrinfo,
query->udpsize);
else
dns_adb_timeout(fctx->adb, query->addrinfo);
update_edns_stats(query);
/*
* If "forward first;" is used and a forwarder timed
......
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