From 71dfdcbfae32f150179f93476f9ff71b30336cb9 Mon Sep 17 00:00:00 2001
From: Mark Andrews <marka@isc.org>
Date: Tue, 16 Oct 2012 10:21:22 +1100
Subject: [PATCH] 3392.   [func]          Keep statistics on REFUSED responses.
 [RT #31412]

---
 CHANGES                     | 2 ++
 bin/named/statschannel.c    | 1 +
 lib/dns/include/dns/stats.h | 3 ++-
 lib/dns/resolver.c          | 3 +++
 4 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/CHANGES b/CHANGES
index 6ce36cbcda..19a14ad443 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,5 @@
+3392.	[func]		Keep statistics on REFUSED responses. [RT #31412]
+
 3391.	[bug]		A DNSKEY lookup that encountered a CNAME failed.
 			[RT #31262]
 
diff --git a/bin/named/statschannel.c b/bin/named/statschannel.c
index fe5d3c6751..3adb2ffd4d 100644
--- a/bin/named/statschannel.c
+++ b/bin/named/statschannel.c
@@ -280,6 +280,7 @@ init_desc(void) {
 			"QryRTT" DNS_RESOLVER_QRYRTTCLASS4STR "+");
 	SET_RESSTATDESC(nfetch, "active fetches", "NumFetch");
 	SET_RESSTATDESC(buckets, "bucket size", "BucketSize");
+	SET_RESSTATDESC(refused, "REFUSED received", "REFUSED");
 	INSIST(i == dns_resstatscounter_max);
 
 	/* Initialize adb statistics */
diff --git a/lib/dns/include/dns/stats.h b/lib/dns/include/dns/stats.h
index d1c9c700e0..a6b938e9cc 100644
--- a/lib/dns/include/dns/stats.h
+++ b/lib/dns/include/dns/stats.h
@@ -65,8 +65,9 @@ enum {
 	dns_resstatscounter_disprequdp = 31,
 	dns_resstatscounter_dispreqtcp = 32,
 	dns_resstatscounter_buckets = 33,
+	dns_resstatscounter_refused = 34,
 
-	dns_resstatscounter_max = 34,
+	dns_resstatscounter_max = 35,
 
 	/*
 	 * DNSSEC stats.
diff --git a/lib/dns/resolver.c b/lib/dns/resolver.c
index 256c29bb38..0585995203 100644
--- a/lib/dns/resolver.c
+++ b/lib/dns/resolver.c
@@ -6833,6 +6833,9 @@ resquery_response(isc_task_t *task, isc_event_t *event) {
 		case dns_rcode_formerr:
 			inc_stats(fctx->res, dns_resstatscounter_formerr);
 			break;
+		case dns_rcode_refused:
+			inc_stats(fctx->res, dns_resstatscounter_refused);
+			break;
 		default:
 			inc_stats(fctx->res, dns_resstatscounter_othererror);
 			break;