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qname minimization: log how many qmin steps were taken

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This commit is contained in:
Witold Kręcicki 2018-05-22 10:22:24 +02:00
parent c04784c144
commit 058ce1e732
1 changed files with 8 additions and 3 deletions
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11
lib/dns/resolver.c
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@ -65,7 +65,7 @@
#include <dns/stats.h>
#include <dns/tsig.h>
#include <dns/validator.h>
#define WANT_QUERYTRACE
#ifdef WANT_QUERYTRACE
#define RTRACE(m) isc_log_write(dns_lctx, \
DNS_LOGCATEGORY_RESOLVER, \
@ -308,6 +308,7 @@ struct fetchctx {
isc_counter_t * qc;
isc_boolean_t minimized;
unsigned int qmin_labels;
unsigned int qmin_steps;
isc_boolean_t ip6arpaskip;
dns_name_t name;
dns_rdatatype_t type;
@ -4563,6 +4564,7 @@ fctx_create(dns_resolver_t *res, const dns_name_t *name, dns_rdatatype_t type,
fctx->minimized = isc_boolean_false;
fctx->ip6arpaskip = isc_boolean_false;
fctx->qmin_labels = 1;
fctx->qmin_steps = 0;
isc_stdtime_get(&fctx->now);
ISC_LIST_INIT(fctx->queries);
ISC_LIST_INIT(fctx->finds);
@ -10340,6 +10342,7 @@ fctx_minimize_qname(fetchctx_t *fctx) {
&fctx->name);
fctx->type = dns_rdatatype_ns;
fctx->minimized = isc_boolean_true;
fctx->qmin_steps++;
} else {
/* Minimization is done, we'll ask for whole qname */
fctx->type = fctx->fulltype;
@ -10612,7 +10615,8 @@ dns_resolver_logfetch(dns_fetch_t *fetch, isc_log_t *lctx,
"%06" ISC_PRINT_QUADFORMAT "u: %s/%s "
"[domain:%s,referral:%u,restart:%u,qrysent:%u,"
"timeout:%u,lame:%u,quota:%u,neterr:%u,"
"badresp:%u,adberr:%u,findfail:%u,valfail:%u]",
"badresp:%u,adberr:%u,findfail:%u,valfail:%u,"
"qminsteps:%u]",
__FILE__, fctx->exitline, fctx->info,
fctx->duration / US_PER_SEC,
fctx->duration % US_PER_SEC,
@ -10622,7 +10626,8 @@ dns_resolver_logfetch(dns_fetch_t *fetch, isc_log_t *lctx,
fctx->querysent, fctx->timeouts,
fctx->lamecount, fctx->quotacount,
fctx->neterr, fctx->badresp, fctx->adberr,
fctx->findfail, fctx->valfail);
fctx->findfail, fctx->valfail,
fctx->qmin_steps);
fctx->logged = ISC_TRUE;
}