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-rw-r--r--lib/dns/stats.c653
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diff --git a/lib/dns/stats.c b/lib/dns/stats.c
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--- /dev/null
+++ b/lib/dns/stats.c
@@ -0,0 +1,653 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#include <inttypes.h>
+#include <stdbool.h>
+
+#include <isc/magic.h>
+#include <isc/mem.h>
+#include <isc/refcount.h>
+#include <isc/stats.h>
+#include <isc/util.h>
+
+#include <dns/log.h>
+#include <dns/opcode.h>
+#include <dns/rdatatype.h>
+#include <dns/stats.h>
+
+#define DNS_STATS_MAGIC ISC_MAGIC('D', 's', 't', 't')
+#define DNS_STATS_VALID(x) ISC_MAGIC_VALID(x, DNS_STATS_MAGIC)
+
+/*%
+ * Statistics types.
+ */
+typedef enum {
+ dns_statstype_general = 0,
+ dns_statstype_rdtype = 1,
+ dns_statstype_rdataset = 2,
+ dns_statstype_opcode = 3,
+ dns_statstype_rcode = 4,
+ dns_statstype_dnssec = 5
+} dns_statstype_t;
+
+/*%
+ * It doesn't make sense to have 2^16 counters for all possible types since
+ * most of them won't be used. We have counters for the first 256 types.
+ *
+ * A rdtypecounter is now 8 bits for RRtypes and 3 bits for flags:
+ *
+ * 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ * | | | | | | S |NX| RRType |
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ *
+ * If the 8 bits for RRtype are all zero, this is an Other RRtype.
+ */
+#define RDTYPECOUNTER_MAXTYPE 0x00ff
+
+/*
+ *
+ * Bit 7 is the NXRRSET (NX) flag and indicates whether this is a
+ * positive (0) or a negative (1) RRset.
+ */
+#define RDTYPECOUNTER_NXRRSET 0x0100
+
+/*
+ * Then bit 5 and 6 mostly tell you if this counter is for an active,
+ * stale, or ancient RRtype:
+ *
+ * S = 0 (0b00) means Active
+ * S = 1 (0b01) means Stale
+ * S = 2 (0b10) means Ancient
+ *
+ * Since a counter cannot be stale and ancient at the same time, we
+ * treat S = 0b11 as a special case to deal with NXDOMAIN counters.
+ */
+#define RDTYPECOUNTER_STALE (1 << 9)
+#define RDTYPECOUNTER_ANCIENT (1 << 10)
+#define RDTYPECOUNTER_NXDOMAIN ((1 << 9) | (1 << 10))
+
+/*
+ * S = 0b11 indicates an NXDOMAIN counter and in this case the RRtype
+ * field signals the expiry of this cached item:
+ *
+ * RRType = 0 (0b00) means Active
+ * RRType = 1 (0b01) means Stale
+ * RRType = 2 (0b02) means Ancient
+ *
+ */
+#define RDTYPECOUNTER_NXDOMAIN_STALE 1
+#define RDTYPECOUNTER_NXDOMAIN_ANCIENT 2
+
+/*
+ * The maximum value for rdtypecounter is for an ancient NXDOMAIN.
+ */
+#define RDTYPECOUNTER_MAXVAL 0x0602
+
+/*
+ * DNSSEC sign statistics.
+ *
+ * Per key we maintain 3 counters. The first is actually no counter but
+ * a key id reference. The second is the number of signatures the key created.
+ * The third is the number of signatures refreshed by the key.
+ */
+
+/* Maximum number of keys to keep track of for DNSSEC signing statistics. */
+static int dnssecsign_num_keys = 4;
+static int dnssecsign_block_size = 3;
+/* Key id mask */
+#define DNSSECSIGNSTATS_KEY_ID_MASK 0x0000FFFF
+
+struct dns_stats {
+ unsigned int magic;
+ dns_statstype_t type;
+ isc_mem_t *mctx;
+ isc_stats_t *counters;
+ isc_refcount_t references;
+};
+
+typedef struct rdatadumparg {
+ dns_rdatatypestats_dumper_t fn;
+ void *arg;
+} rdatadumparg_t;
+
+typedef struct opcodedumparg {
+ dns_opcodestats_dumper_t fn;
+ void *arg;
+} opcodedumparg_t;
+
+typedef struct rcodedumparg {
+ dns_rcodestats_dumper_t fn;
+ void *arg;
+} rcodedumparg_t;
+typedef struct dnssecsigndumparg {
+ dns_dnssecsignstats_dumper_t fn;
+ void *arg;
+} dnssecsigndumparg_t;
+
+void
+dns_stats_attach(dns_stats_t *stats, dns_stats_t **statsp) {
+ REQUIRE(DNS_STATS_VALID(stats));
+ REQUIRE(statsp != NULL && *statsp == NULL);
+
+ isc_refcount_increment(&stats->references);
+
+ *statsp = stats;
+}
+
+void
+dns_stats_detach(dns_stats_t **statsp) {
+ dns_stats_t *stats;
+
+ REQUIRE(statsp != NULL && DNS_STATS_VALID(*statsp));
+
+ stats = *statsp;
+ *statsp = NULL;
+
+ if (isc_refcount_decrement(&stats->references) == 1) {
+ isc_refcount_destroy(&stats->references);
+ isc_stats_detach(&stats->counters);
+ isc_mem_putanddetach(&stats->mctx, stats, sizeof(*stats));
+ }
+}
+
+/*%
+ * Create methods
+ */
+static isc_result_t
+create_stats(isc_mem_t *mctx, dns_statstype_t type, int ncounters,
+ dns_stats_t **statsp) {
+ dns_stats_t *stats;
+ isc_result_t result;
+
+ stats = isc_mem_get(mctx, sizeof(*stats));
+
+ stats->counters = NULL;
+ isc_refcount_init(&stats->references, 1);
+
+ result = isc_stats_create(mctx, &stats->counters, ncounters);
+ if (result != ISC_R_SUCCESS) {
+ goto clean_mutex;
+ }
+
+ stats->magic = DNS_STATS_MAGIC;
+ stats->type = type;
+ stats->mctx = NULL;
+ isc_mem_attach(mctx, &stats->mctx);
+ *statsp = stats;
+
+ return (ISC_R_SUCCESS);
+
+clean_mutex:
+ isc_mem_put(mctx, stats, sizeof(*stats));
+
+ return (result);
+}
+
+isc_result_t
+dns_generalstats_create(isc_mem_t *mctx, dns_stats_t **statsp, int ncounters) {
+ REQUIRE(statsp != NULL && *statsp == NULL);
+
+ return (create_stats(mctx, dns_statstype_general, ncounters, statsp));
+}
+
+isc_result_t
+dns_rdatatypestats_create(isc_mem_t *mctx, dns_stats_t **statsp) {
+ REQUIRE(statsp != NULL && *statsp == NULL);
+
+ /*
+ * Create rdtype statistics for the first 255 RRtypes,
+ * plus one additional for other RRtypes.
+ */
+ return (create_stats(mctx, dns_statstype_rdtype,
+ (RDTYPECOUNTER_MAXTYPE + 1), statsp));
+}
+
+isc_result_t
+dns_rdatasetstats_create(isc_mem_t *mctx, dns_stats_t **statsp) {
+ REQUIRE(statsp != NULL && *statsp == NULL);
+
+ return (create_stats(mctx, dns_statstype_rdataset,
+ (RDTYPECOUNTER_MAXVAL + 1), statsp));
+}
+
+isc_result_t
+dns_opcodestats_create(isc_mem_t *mctx, dns_stats_t **statsp) {
+ REQUIRE(statsp != NULL && *statsp == NULL);
+
+ return (create_stats(mctx, dns_statstype_opcode, 16, statsp));
+}
+
+isc_result_t
+dns_rcodestats_create(isc_mem_t *mctx, dns_stats_t **statsp) {
+ REQUIRE(statsp != NULL && *statsp == NULL);
+
+ return (create_stats(mctx, dns_statstype_rcode, dns_rcode_badcookie + 1,
+ statsp));
+}
+
+isc_result_t
+dns_dnssecsignstats_create(isc_mem_t *mctx, dns_stats_t **statsp) {
+ REQUIRE(statsp != NULL && *statsp == NULL);
+
+ /*
+ * Create two counters per key, one is the key id, the other two are
+ * the actual counters for creating and refreshing signatures.
+ */
+ return (create_stats(mctx, dns_statstype_dnssec,
+ dnssecsign_num_keys * dnssecsign_block_size,
+ statsp));
+}
+
+/*%
+ * Increment/Decrement methods
+ */
+void
+dns_generalstats_increment(dns_stats_t *stats, isc_statscounter_t counter) {
+ REQUIRE(DNS_STATS_VALID(stats) && stats->type == dns_statstype_general);
+
+ isc_stats_increment(stats->counters, counter);
+}
+
+static isc_statscounter_t
+rdatatype2counter(dns_rdatatype_t type) {
+ if (type > (dns_rdatatype_t)RDTYPECOUNTER_MAXTYPE) {
+ return (0);
+ }
+ return ((isc_statscounter_t)type);
+}
+
+void
+dns_rdatatypestats_increment(dns_stats_t *stats, dns_rdatatype_t type) {
+ isc_statscounter_t counter;
+
+ REQUIRE(DNS_STATS_VALID(stats) && stats->type == dns_statstype_rdtype);
+
+ counter = rdatatype2counter(type);
+ isc_stats_increment(stats->counters, counter);
+}
+
+static void
+update_rdatasetstats(dns_stats_t *stats, dns_rdatastatstype_t rrsettype,
+ bool increment) {
+ isc_statscounter_t counter;
+
+ if ((DNS_RDATASTATSTYPE_ATTR(rrsettype) &
+ DNS_RDATASTATSTYPE_ATTR_NXDOMAIN) != 0)
+ {
+ counter = RDTYPECOUNTER_NXDOMAIN;
+
+ /*
+ * This is an NXDOMAIN counter, save the expiry value
+ * (active, stale, or ancient) value in the RRtype part.
+ */
+ if ((DNS_RDATASTATSTYPE_ATTR(rrsettype) &
+ DNS_RDATASTATSTYPE_ATTR_ANCIENT) != 0)
+ {
+ counter |= RDTYPECOUNTER_NXDOMAIN_ANCIENT;
+ } else if ((DNS_RDATASTATSTYPE_ATTR(rrsettype) &
+ DNS_RDATASTATSTYPE_ATTR_STALE) != 0)
+ {
+ counter += RDTYPECOUNTER_NXDOMAIN_STALE;
+ }
+ } else {
+ counter = rdatatype2counter(DNS_RDATASTATSTYPE_BASE(rrsettype));
+
+ if ((DNS_RDATASTATSTYPE_ATTR(rrsettype) &
+ DNS_RDATASTATSTYPE_ATTR_NXRRSET) != 0)
+ {
+ counter |= RDTYPECOUNTER_NXRRSET;
+ }
+
+ if ((DNS_RDATASTATSTYPE_ATTR(rrsettype) &
+ DNS_RDATASTATSTYPE_ATTR_ANCIENT) != 0)
+ {
+ counter |= RDTYPECOUNTER_ANCIENT;
+ } else if ((DNS_RDATASTATSTYPE_ATTR(rrsettype) &
+ DNS_RDATASTATSTYPE_ATTR_STALE) != 0)
+ {
+ counter |= RDTYPECOUNTER_STALE;
+ }
+ }
+
+ if (increment) {
+ isc_stats_increment(stats->counters, counter);
+ } else {
+ isc_stats_decrement(stats->counters, counter);
+ }
+}
+
+void
+dns_rdatasetstats_increment(dns_stats_t *stats,
+ dns_rdatastatstype_t rrsettype) {
+ REQUIRE(DNS_STATS_VALID(stats) &&
+ stats->type == dns_statstype_rdataset);
+
+ update_rdatasetstats(stats, rrsettype, true);
+}
+
+void
+dns_rdatasetstats_decrement(dns_stats_t *stats,
+ dns_rdatastatstype_t rrsettype) {
+ REQUIRE(DNS_STATS_VALID(stats) &&
+ stats->type == dns_statstype_rdataset);
+
+ update_rdatasetstats(stats, rrsettype, false);
+}
+
+void
+dns_opcodestats_increment(dns_stats_t *stats, dns_opcode_t code) {
+ REQUIRE(DNS_STATS_VALID(stats) && stats->type == dns_statstype_opcode);
+
+ isc_stats_increment(stats->counters, (isc_statscounter_t)code);
+}
+
+void
+dns_rcodestats_increment(dns_stats_t *stats, dns_rcode_t code) {
+ REQUIRE(DNS_STATS_VALID(stats) && stats->type == dns_statstype_rcode);
+
+ if (code <= dns_rcode_badcookie) {
+ isc_stats_increment(stats->counters, (isc_statscounter_t)code);
+ }
+}
+
+void
+dns_dnssecsignstats_increment(dns_stats_t *stats, dns_keytag_t id, uint8_t alg,
+ dnssecsignstats_type_t operation) {
+ uint32_t kval;
+ int num_keys = isc_stats_ncounters(stats->counters) /
+ dnssecsign_block_size;
+
+ REQUIRE(DNS_STATS_VALID(stats) && stats->type == dns_statstype_dnssec);
+
+ /* Shift algorithm in front of key tag, which is 16 bits */
+ kval = (uint32_t)(alg << 16 | id);
+
+ /* Look up correct counter. */
+ for (int i = 0; i < num_keys; i++) {
+ int idx = i * dnssecsign_block_size;
+ uint32_t counter = isc_stats_get_counter(stats->counters, idx);
+ if (counter == kval) {
+ /* Match */
+ isc_stats_increment(stats->counters, (idx + operation));
+ return;
+ }
+ }
+
+ /* No match found. Store key in unused slot. */
+ for (int i = 0; i < num_keys; i++) {
+ int idx = i * dnssecsign_block_size;
+ uint32_t counter = isc_stats_get_counter(stats->counters, idx);
+ if (counter == 0) {
+ isc_stats_set(stats->counters, kval, idx);
+ isc_stats_increment(stats->counters, (idx + operation));
+ return;
+ }
+ }
+
+ /* No room, grow stats storage. */
+ isc_stats_resize(&stats->counters,
+ (num_keys * dnssecsign_block_size * 2));
+
+ /* Reset counters for new key (new index, nidx). */
+ int nidx = num_keys * dnssecsign_block_size;
+ isc_stats_set(stats->counters, kval, nidx);
+ isc_stats_set(stats->counters, 0, (nidx + dns_dnssecsignstats_sign));
+ isc_stats_set(stats->counters, 0, (nidx + dns_dnssecsignstats_refresh));
+
+ /* And increment the counter for the given operation. */
+ isc_stats_increment(stats->counters, (nidx + operation));
+}
+
+void
+dns_dnssecsignstats_clear(dns_stats_t *stats, dns_keytag_t id, uint8_t alg) {
+ uint32_t kval;
+ int num_keys = isc_stats_ncounters(stats->counters) /
+ dnssecsign_block_size;
+
+ REQUIRE(DNS_STATS_VALID(stats) && stats->type == dns_statstype_dnssec);
+
+ /* Shift algorithm in front of key tag, which is 16 bits */
+ kval = (uint32_t)(alg << 16 | id);
+
+ /* Look up correct counter. */
+ for (int i = 0; i < num_keys; i++) {
+ int idx = i * dnssecsign_block_size;
+ uint32_t counter = isc_stats_get_counter(stats->counters, idx);
+ if (counter == kval) {
+ /* Match */
+ isc_stats_set(stats->counters, 0, idx);
+ isc_stats_set(stats->counters, 0,
+ (idx + dns_dnssecsignstats_sign));
+ isc_stats_set(stats->counters, 0,
+ (idx + dns_dnssecsignstats_refresh));
+ return;
+ }
+ }
+}
+
+/*%
+ * Dump methods
+ */
+void
+dns_generalstats_dump(dns_stats_t *stats, dns_generalstats_dumper_t dump_fn,
+ void *arg, unsigned int options) {
+ REQUIRE(DNS_STATS_VALID(stats) && stats->type == dns_statstype_general);
+
+ isc_stats_dump(stats->counters, (isc_stats_dumper_t)dump_fn, arg,
+ options);
+}
+
+static void
+dump_rdentry(int rdcounter, uint64_t value, dns_rdatastatstype_t attributes,
+ dns_rdatatypestats_dumper_t dump_fn, void *arg) {
+ dns_rdatatype_t rdtype = dns_rdatatype_none; /* sentinel */
+ dns_rdatastatstype_t type;
+
+ if ((rdcounter & RDTYPECOUNTER_MAXTYPE) == 0) {
+ attributes |= DNS_RDATASTATSTYPE_ATTR_OTHERTYPE;
+ } else {
+ rdtype = (dns_rdatatype_t)(rdcounter & RDTYPECOUNTER_MAXTYPE);
+ }
+ type = DNS_RDATASTATSTYPE_VALUE((dns_rdatastatstype_t)rdtype,
+ attributes);
+ dump_fn(type, value, arg);
+}
+
+static void
+rdatatype_dumpcb(isc_statscounter_t counter, uint64_t value, void *arg) {
+ rdatadumparg_t *rdatadumparg = arg;
+
+ dump_rdentry(counter, value, 0, rdatadumparg->fn, rdatadumparg->arg);
+}
+
+void
+dns_rdatatypestats_dump(dns_stats_t *stats, dns_rdatatypestats_dumper_t dump_fn,
+ void *arg0, unsigned int options) {
+ rdatadumparg_t arg;
+ REQUIRE(DNS_STATS_VALID(stats) && stats->type == dns_statstype_rdtype);
+
+ arg.fn = dump_fn;
+ arg.arg = arg0;
+ isc_stats_dump(stats->counters, rdatatype_dumpcb, &arg, options);
+}
+
+static void
+rdataset_dumpcb(isc_statscounter_t counter, uint64_t value, void *arg) {
+ rdatadumparg_t *rdatadumparg = arg;
+ unsigned int attributes = 0;
+
+ if ((counter & RDTYPECOUNTER_NXDOMAIN) == RDTYPECOUNTER_NXDOMAIN) {
+ attributes |= DNS_RDATASTATSTYPE_ATTR_NXDOMAIN;
+
+ /*
+ * This is an NXDOMAIN counter, check the RRtype part for the
+ * expiry value (active, stale, or ancient).
+ */
+ if ((counter & RDTYPECOUNTER_MAXTYPE) ==
+ RDTYPECOUNTER_NXDOMAIN_STALE)
+ {
+ attributes |= DNS_RDATASTATSTYPE_ATTR_STALE;
+ } else if ((counter & RDTYPECOUNTER_MAXTYPE) ==
+ RDTYPECOUNTER_NXDOMAIN_ANCIENT)
+ {
+ attributes |= DNS_RDATASTATSTYPE_ATTR_ANCIENT;
+ }
+ } else {
+ if ((counter & RDTYPECOUNTER_MAXTYPE) == 0) {
+ attributes |= DNS_RDATASTATSTYPE_ATTR_OTHERTYPE;
+ }
+ if ((counter & RDTYPECOUNTER_NXRRSET) != 0) {
+ attributes |= DNS_RDATASTATSTYPE_ATTR_NXRRSET;
+ }
+
+ if ((counter & RDTYPECOUNTER_STALE) != 0) {
+ attributes |= DNS_RDATASTATSTYPE_ATTR_STALE;
+ } else if ((counter & RDTYPECOUNTER_ANCIENT) != 0) {
+ attributes |= DNS_RDATASTATSTYPE_ATTR_ANCIENT;
+ }
+ }
+
+ dump_rdentry(counter, value, attributes, rdatadumparg->fn,
+ rdatadumparg->arg);
+}
+
+void
+dns_rdatasetstats_dump(dns_stats_t *stats, dns_rdatatypestats_dumper_t dump_fn,
+ void *arg0, unsigned int options) {
+ rdatadumparg_t arg;
+
+ REQUIRE(DNS_STATS_VALID(stats) &&
+ stats->type == dns_statstype_rdataset);
+
+ arg.fn = dump_fn;
+ arg.arg = arg0;
+ isc_stats_dump(stats->counters, rdataset_dumpcb, &arg, options);
+}
+
+static void
+dnssec_dumpcb(isc_statscounter_t counter, uint64_t value, void *arg) {
+ dnssecsigndumparg_t *dnssecarg = arg;
+
+ dnssecarg->fn((dns_keytag_t)counter, value, dnssecarg->arg);
+}
+
+static void
+dnssec_statsdump(isc_stats_t *stats, dnssecsignstats_type_t operation,
+ isc_stats_dumper_t dump_fn, void *arg, unsigned int options) {
+ int i, num_keys;
+
+ num_keys = isc_stats_ncounters(stats) / dnssecsign_block_size;
+ for (i = 0; i < num_keys; i++) {
+ int idx = dnssecsign_block_size * i;
+ uint32_t kval, val;
+ dns_keytag_t id;
+
+ kval = isc_stats_get_counter(stats, idx);
+ if (kval == 0) {
+ continue;
+ }
+
+ val = isc_stats_get_counter(stats, (idx + operation));
+ if ((options & ISC_STATSDUMP_VERBOSE) == 0 && val == 0) {
+ continue;
+ }
+
+ id = (dns_keytag_t)kval & DNSSECSIGNSTATS_KEY_ID_MASK;
+
+ dump_fn((isc_statscounter_t)id, val, arg);
+ }
+}
+
+void
+dns_dnssecsignstats_dump(dns_stats_t *stats, dnssecsignstats_type_t operation,
+ dns_dnssecsignstats_dumper_t dump_fn, void *arg0,
+ unsigned int options) {
+ dnssecsigndumparg_t arg;
+
+ REQUIRE(DNS_STATS_VALID(stats) && stats->type == dns_statstype_dnssec);
+
+ arg.fn = dump_fn;
+ arg.arg = arg0;
+
+ dnssec_statsdump(stats->counters, operation, dnssec_dumpcb, &arg,
+ options);
+}
+
+static void
+opcode_dumpcb(isc_statscounter_t counter, uint64_t value, void *arg) {
+ opcodedumparg_t *opcodearg = arg;
+
+ opcodearg->fn((dns_opcode_t)counter, value, opcodearg->arg);
+}
+
+static void
+rcode_dumpcb(isc_statscounter_t counter, uint64_t value, void *arg) {
+ rcodedumparg_t *rcodearg = arg;
+
+ rcodearg->fn((dns_rcode_t)counter, value, rcodearg->arg);
+}
+
+void
+dns_opcodestats_dump(dns_stats_t *stats, dns_opcodestats_dumper_t dump_fn,
+ void *arg0, unsigned int options) {
+ opcodedumparg_t arg;
+
+ REQUIRE(DNS_STATS_VALID(stats) && stats->type == dns_statstype_opcode);
+
+ arg.fn = dump_fn;
+ arg.arg = arg0;
+ isc_stats_dump(stats->counters, opcode_dumpcb, &arg, options);
+}
+
+void
+dns_rcodestats_dump(dns_stats_t *stats, dns_rcodestats_dumper_t dump_fn,
+ void *arg0, unsigned int options) {
+ rcodedumparg_t arg;
+
+ REQUIRE(DNS_STATS_VALID(stats) && stats->type == dns_statstype_rcode);
+
+ arg.fn = dump_fn;
+ arg.arg = arg0;
+ isc_stats_dump(stats->counters, rcode_dumpcb, &arg, options);
+}
+
+/***
+ *** Obsolete variables and functions follow:
+ ***/
+const char *dns_statscounter_names[DNS_STATS_NCOUNTERS] = {
+ "success", "referral", "nxrrset", "nxdomain",
+ "recursion", "failure", "duplicate", "dropped"
+};
+
+isc_result_t
+dns_stats_alloccounters(isc_mem_t *mctx, uint64_t **ctrp) {
+ int i;
+ uint64_t *p = isc_mem_get(mctx, DNS_STATS_NCOUNTERS * sizeof(uint64_t));
+ if (p == NULL) {
+ return (ISC_R_NOMEMORY);
+ }
+ for (i = 0; i < DNS_STATS_NCOUNTERS; i++) {
+ p[i] = 0;
+ }
+ *ctrp = p;
+ return (ISC_R_SUCCESS);
+}
+
+void
+dns_stats_freecounters(isc_mem_t *mctx, uint64_t **ctrp) {
+ isc_mem_put(mctx, *ctrp, DNS_STATS_NCOUNTERS * sizeof(uint64_t));
+ *ctrp = NULL;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-03 22:06:02 +0000