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unbound/daemon/stats.c
Robert Edmonds fceb4e8585
Mesh reply counters (#1374) 
* Statistics counter for number of queries dropped by limit on reply addresses

Request list entries can be associated with multiple pending "reply
addresses". Basically each request list entry keeps its own list of
clients that should receive the response once the recursion is finished.
This requires keeping allocations around for each client, and there is
a global limit on the number of *additional* reply addresses that can
be allocated. (Each new request list entry seems to get its own initial
reply address which is not counted against the limit.)

This commit adds a statistics counter "num_queries_replyaddr_limit" that
counts the number of incoming client queries that have been dropped due
to the restriction on allocating additional reply addresses. This allows
distinguishing these drops from other kinds of drops.

* Statistics counter for number of mesh reply entries

Request list entries can be associated with multiple pending "reply
addresses". Since there is a limit on the number of additional reply
addresses that can be allocated which can cause incoming queries to be
dropped if exceeded, it would be nice to be able to track this number.

This commit basically exports the mesh_area's internal counter
`num_reply_addrs` as "threadX.requestlist.current.replies" /
"total.requestlist.current.replies".
2025-11-13 09:33:05 +01:00

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/*
* daemon/stats.c - collect runtime performance indicators.
*
* Copyright (c) 2007, NLnet Labs. All rights reserved.
*
* This software is open source.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the NLNET LABS nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* \file
*
* This file describes the data structure used to collect runtime performance
* numbers. These 'statistics' may be of interest to the operator.
*/
#include "config.h"
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#include <sys/time.h>
#include <sys/types.h>
#include "daemon/stats.h"
#include "daemon/worker.h"
#include "daemon/daemon.h"
#include "services/mesh.h"
#include "services/outside_network.h"
#include "services/listen_dnsport.h"
#include "util/config_file.h"
#include "util/tube.h"
#include "util/timehist.h"
#include "util/net_help.h"
#include "validator/validator.h"
#include "iterator/iterator.h"
#include "sldns/sbuffer.h"
#include "services/cache/rrset.h"
#include "services/cache/infra.h"
#include "services/authzone.h"
#include "validator/val_kcache.h"
#include "validator/val_neg.h"
#ifdef CLIENT_SUBNET
#include "edns-subnet/subnetmod.h"
#endif
#ifdef HAVE_SSL
#include <openssl/ssl.h>
#endif
/** How long to wait for threads to transmit statistics, in msec. */
#define STATS_THREAD_WAIT 60000
/** add timers and the values do not overflow or become negative */
static void
stats_timeval_add(long long* d_sec, long long* d_usec, long long add_sec, long long add_usec)
{
#ifndef S_SPLINT_S
(*d_sec) += add_sec;
(*d_usec) += add_usec;
if((*d_usec) >= 1000000) {
(*d_usec) -= 1000000;
(*d_sec)++;
}
#endif
}
void server_stats_init(struct ub_server_stats* stats, struct config_file* cfg)
{
memset(stats, 0, sizeof(*stats));
stats->extended = cfg->stat_extended;
}
void server_stats_querymiss(struct ub_server_stats* stats, struct worker* worker)
{
stats->num_queries_missed_cache++;
stats->sum_query_list_size += worker->env.mesh->all.count;
if((long long)worker->env.mesh->all.count > stats->max_query_list_size)
stats->max_query_list_size = (long long)worker->env.mesh->all.count;
}
void server_stats_prefetch(struct ub_server_stats* stats, struct worker* worker)
{
stats->num_queries_prefetch++;
/* changes the query list size so account that, like a querymiss */
stats->sum_query_list_size += worker->env.mesh->all.count;
if((long long)worker->env.mesh->all.count > stats->max_query_list_size)
stats->max_query_list_size = (long long)worker->env.mesh->all.count;
}
void server_stats_log(struct ub_server_stats* stats, struct worker* worker,
int threadnum)
{
log_info("server stats for thread %d: %u queries, "
"%u answers from cache, %u recursions, %u prefetch, %u rejected by "
"ip ratelimiting",
threadnum, (unsigned)stats->num_queries,
(unsigned)(stats->num_queries -
stats->num_queries_missed_cache),
(unsigned)stats->num_queries_missed_cache,
(unsigned)stats->num_queries_prefetch,
(unsigned)stats->num_queries_ip_ratelimited);
log_info("server stats for thread %d: requestlist max %u avg %g "
"exceeded %u jostled %u", threadnum,
(unsigned)stats->max_query_list_size,
(stats->num_queries_missed_cache+stats->num_queries_prefetch)?
(double)stats->sum_query_list_size/
(double)(stats->num_queries_missed_cache+
stats->num_queries_prefetch) : 0.0,
(unsigned)worker->env.mesh->stats_dropped,
(unsigned)worker->env.mesh->stats_jostled);
}
#ifdef CLIENT_SUBNET
/** Set the EDNS Subnet stats. */
static void
set_subnet_stats(struct worker* worker, struct ub_server_stats* svr,
int reset)
{
int m = modstack_find(&worker->env.mesh->mods, "subnetcache");
struct subnet_env* sne;
if(m == -1)
return;
sne = (struct subnet_env*)worker->env.modinfo[m];
if(reset && !worker->env.cfg->stat_cumulative) {
lock_rw_wrlock(&sne->biglock);
} else {
lock_rw_rdlock(&sne->biglock);
}
svr->num_query_subnet = (long long)(sne->num_msg_nocache + sne->num_msg_cache);
svr->num_query_subnet_cache = (long long)sne->num_msg_cache;
if(reset && !worker->env.cfg->stat_cumulative) {
sne->num_msg_cache = 0;
sne->num_msg_nocache = 0;
}
lock_rw_unlock(&sne->biglock);
}
#endif /* CLIENT_SUBNET */
/** Set the neg cache stats. */
static void
set_neg_cache_stats(struct worker* worker, struct ub_server_stats* svr,
int reset)
{
int m = modstack_find(&worker->env.mesh->mods, "validator");
struct val_env* ve;
struct val_neg_cache* neg;
if(m == -1)
return;
ve = (struct val_env*)worker->env.modinfo[m];
if(!ve->neg_cache)
return;
neg = ve->neg_cache;
lock_basic_lock(&neg->lock);
svr->num_neg_cache_noerror = (long long)neg->num_neg_cache_noerror;
svr->num_neg_cache_nxdomain = (long long)neg->num_neg_cache_nxdomain;
if(reset && !worker->env.cfg->stat_cumulative) {
neg->num_neg_cache_noerror = 0;
neg->num_neg_cache_nxdomain = 0;
}
lock_basic_unlock(&neg->lock);
}
/** get rrsets bogus number from validator */
static size_t
get_rrset_bogus(struct worker* worker, int reset)
{
int m = modstack_find(&worker->env.mesh->mods, "validator");
struct val_env* ve;
size_t r;
if(m == -1)
return 0;
ve = (struct val_env*)worker->env.modinfo[m];
lock_basic_lock(&ve->bogus_lock);
r = ve->num_rrset_bogus;
if(reset && !worker->env.cfg->stat_cumulative)
ve->num_rrset_bogus = 0;
lock_basic_unlock(&ve->bogus_lock);
return r;
}
/** get number of ratelimited queries from iterator */
static size_t
get_queries_ratelimit(struct worker* worker, int reset)
{
int m = modstack_find(&worker->env.mesh->mods, "iterator");
struct iter_env* ie;
size_t r;
if(m == -1)
return 0;
ie = (struct iter_env*)worker->env.modinfo[m];
lock_basic_lock(&ie->queries_ratelimit_lock);
r = ie->num_queries_ratelimited;
if(reset && !worker->env.cfg->stat_cumulative)
ie->num_queries_ratelimited = 0;
lock_basic_unlock(&ie->queries_ratelimit_lock);
return r;
}
#ifdef USE_DNSCRYPT
/** get the number of shared secret cache miss */
static size_t
get_dnscrypt_cache_miss(struct worker* worker, int reset)
{
size_t r;
struct dnsc_env* de = worker->daemon->dnscenv;
if(!de) return 0;
lock_basic_lock(&de->shared_secrets_cache_lock);
r = de->num_query_dnscrypt_secret_missed_cache;
if(reset && !worker->env.cfg->stat_cumulative)
de->num_query_dnscrypt_secret_missed_cache = 0;
lock_basic_unlock(&de->shared_secrets_cache_lock);
return r;
}
/** get the number of replayed queries */
static size_t
get_dnscrypt_replay(struct worker* worker, int reset)
{
size_t r;
struct dnsc_env* de = worker->daemon->dnscenv;
lock_basic_lock(&de->nonces_cache_lock);
r = de->num_query_dnscrypt_replay;
if(reset && !worker->env.cfg->stat_cumulative)
de->num_query_dnscrypt_replay = 0;
lock_basic_unlock(&de->nonces_cache_lock);
return r;
}
#endif /* USE_DNSCRYPT */
void
server_stats_compile(struct worker* worker, struct ub_stats_info* s, int reset)
{
int i;
struct listen_list* lp;
s->svr = worker->stats;
s->mesh_num_states = (long long)worker->env.mesh->all.count;
s->mesh_num_reply_states = (long long)worker->env.mesh->num_reply_states;
s->mesh_num_reply_addrs = (long long)worker->env.mesh->num_reply_addrs;
s->mesh_jostled = (long long)worker->env.mesh->stats_jostled;
s->mesh_dropped = (long long)worker->env.mesh->stats_dropped;
s->mesh_replies_sent = (long long)worker->env.mesh->replies_sent;
s->mesh_replies_sum_wait_sec = (long long)worker->env.mesh->replies_sum_wait.tv_sec;
s->mesh_replies_sum_wait_usec = (long long)worker->env.mesh->replies_sum_wait.tv_usec;
s->mesh_time_median = timehist_quartile(worker->env.mesh->histogram,
0.50);
/* add in the values from the mesh */
s->svr.ans_secure += (long long)worker->env.mesh->ans_secure;
s->svr.ans_bogus += (long long)worker->env.mesh->ans_bogus;
s->svr.val_ops += (long long)worker->env.mesh->val_ops;
s->svr.ans_rcode_nodata += (long long)worker->env.mesh->ans_nodata;
s->svr.ans_expired += (long long)worker->env.mesh->ans_expired;
for(i=0; i<UB_STATS_RCODE_NUM; i++)
s->svr.ans_rcode[i] += (long long)worker->env.mesh->ans_rcode[i];
for(i=0; i<UB_STATS_RPZ_ACTION_NUM; i++)
s->svr.rpz_action[i] += (long long)worker->env.mesh->rpz_action[i];
timehist_export(worker->env.mesh->histogram, s->svr.hist,
NUM_BUCKETS_HIST);
s->svr.num_queries_discard_timeout +=
(long long)worker->env.mesh->num_queries_discard_timeout;
s->svr.num_queries_replyaddr_limit +=
(long long)worker->env.mesh->num_queries_replyaddr_limit;
s->svr.num_queries_wait_limit +=
(long long)worker->env.mesh->num_queries_wait_limit;
s->svr.num_dns_error_reports +=
(long long)worker->env.mesh->num_dns_error_reports;
/* values from outside network */
s->svr.unwanted_replies = (long long)worker->back->unwanted_replies;
s->svr.qtcp_outgoing = (long long)worker->back->num_tcp_outgoing;
s->svr.qudp_outgoing = (long long)worker->back->num_udp_outgoing;
/* get and reset validator rrset bogus number */
s->svr.rrset_bogus = (long long)get_rrset_bogus(worker, reset);
/* get and reset iterator query ratelimit number */
s->svr.queries_ratelimited = (long long)get_queries_ratelimit(worker, reset);
/* get cache sizes */
get_slabhash_stats(worker->env.msg_cache,
&s->svr.msg_cache_count, &s->svr.msg_cache_max_collisions);
get_slabhash_stats(&worker->env.rrset_cache->table,
&s->svr.rrset_cache_count, &s->svr.rrset_cache_max_collisions);
s->svr.infra_cache_count = (long long)count_slabhash_entries(worker->env.infra_cache->hosts);
if(worker->env.key_cache)
s->svr.key_cache_count = (long long)count_slabhash_entries(worker->env.key_cache->slab);
else s->svr.key_cache_count = 0;
#ifdef USE_DNSCRYPT
if(worker->daemon->dnscenv) {
s->svr.num_query_dnscrypt_secret_missed_cache =
(long long)get_dnscrypt_cache_miss(worker, reset);
s->svr.shared_secret_cache_count = (long long)count_slabhash_entries(
worker->daemon->dnscenv->shared_secrets_cache);
s->svr.nonce_cache_count = (long long)count_slabhash_entries(
worker->daemon->dnscenv->nonces_cache);
s->svr.num_query_dnscrypt_replay =
(long long)get_dnscrypt_replay(worker, reset);
} else {
s->svr.num_query_dnscrypt_secret_missed_cache = 0;
s->svr.shared_secret_cache_count = 0;
s->svr.nonce_cache_count = 0;
s->svr.num_query_dnscrypt_replay = 0;
}
#else
s->svr.num_query_dnscrypt_secret_missed_cache = 0;
s->svr.shared_secret_cache_count = 0;
s->svr.nonce_cache_count = 0;
s->svr.num_query_dnscrypt_replay = 0;
#endif /* USE_DNSCRYPT */
if(worker->env.auth_zones) {
s->svr.num_query_authzone_up += (long long)worker->env.mesh->num_query_authzone_up;
s->svr.num_query_authzone_down += (long long)worker->env.mesh->num_query_authzone_down;
}
s->svr.mem_stream_wait =
(long long)tcp_req_info_get_stream_buffer_size();
s->svr.mem_http2_query_buffer =
(long long)http2_get_query_buffer_size();
s->svr.mem_http2_response_buffer =
(long long)http2_get_response_buffer_size();
#ifdef HAVE_NGTCP2
s->svr.mem_quic = (long long)doq_table_quic_size_get(
worker->daemon->doq_table);
#else
s->svr.mem_quic = 0;
#endif /* HAVE_NGTCP2 */
/* Set neg cache usage numbers */
set_neg_cache_stats(worker, &s->svr, reset);
#ifdef CLIENT_SUBNET
/* EDNS Subnet usage numbers */
set_subnet_stats(worker, &s->svr, reset);
#else
s->svr.num_query_subnet = 0;
s->svr.num_query_subnet_cache = 0;
#endif
#ifdef USE_CACHEDB
s->svr.num_query_cachedb = (long long)worker->env.mesh->ans_cachedb;
#else
s->svr.num_query_cachedb = 0;
#endif
/* get tcp accept usage */
s->svr.tcp_accept_usage = 0;
for(lp = worker->front->cps; lp; lp = lp->next) {
if(lp->com->type == comm_tcp_accept)
s->svr.tcp_accept_usage += (long long)lp->com->cur_tcp_count;
}
if(reset && !worker->env.cfg->stat_cumulative) {
worker_stats_clear(worker);
}
}
void server_stats_obtain(struct worker* worker, struct worker* who,
struct ub_stats_info* s, int reset)
{
uint8_t *reply = NULL;
uint32_t len = 0;
if(worker == who) {
/* just fill it in */
server_stats_compile(worker, s, reset);
return;
}
/* communicate over tube */
verbose(VERB_ALGO, "write stats cmd");
if(reset)
worker_send_cmd(who, worker_cmd_stats);
else worker_send_cmd(who, worker_cmd_stats_noreset);
verbose(VERB_ALGO, "wait for stats reply");
if(tube_wait_timeout(worker->cmd, STATS_THREAD_WAIT) == 0) {
#if defined(HAVE_PTHREAD) && defined(SIZEOF_PTHREAD_T) && defined(SIZEOF_UNSIGNED_LONG)
# if SIZEOF_PTHREAD_T == SIZEOF_UNSIGNED_LONG
unsigned long pthid = 0;
if(verbosity >= VERB_OPS)
memcpy(&pthid, &who->thr_id, sizeof(unsigned long));
# endif
#endif
verbose(VERB_OPS, "no response from thread %d"
#ifdef HAVE_GETTID
" LWP %u"
#endif
#if defined(HAVE_PTHREAD) && defined(SIZEOF_PTHREAD_T) && defined(SIZEOF_UNSIGNED_LONG)
# if SIZEOF_PTHREAD_T == SIZEOF_UNSIGNED_LONG
" pthread 0x%lx"
# endif
#endif
,
who->thread_num
#ifdef HAVE_GETTID
, (unsigned)who->thread_tid
#endif
#if defined(HAVE_PTHREAD) && defined(SIZEOF_PTHREAD_T) && defined(SIZEOF_UNSIGNED_LONG)
# if SIZEOF_PTHREAD_T == SIZEOF_UNSIGNED_LONG
, pthid
# endif
#endif
);
}
if(!tube_read_msg(worker->cmd, &reply, &len, 0))
fatal_exit("failed to read stats over cmd channel");
if(len != (uint32_t)sizeof(*s))
fatal_exit("stats on cmd channel wrong length %d %d",
(int)len, (int)sizeof(*s));
memcpy(s, reply, (size_t)len);
free(reply);
}
void server_stats_reply(struct worker* worker, int reset)
{
struct ub_stats_info s;
server_stats_compile(worker, &s, reset);
verbose(VERB_ALGO, "write stats replymsg");
if(!tube_write_msg(worker->daemon->workers[0]->cmd,
(uint8_t*)&s, sizeof(s), 0))
fatal_exit("could not write stat values over cmd channel");
}
void server_stats_add(struct ub_stats_info* total, struct ub_stats_info* a)
{
total->svr.num_queries += a->svr.num_queries;
total->svr.num_queries_ip_ratelimited += a->svr.num_queries_ip_ratelimited;
total->svr.num_queries_cookie_valid += a->svr.num_queries_cookie_valid;
total->svr.num_queries_cookie_client += a->svr.num_queries_cookie_client;
total->svr.num_queries_cookie_invalid += a->svr.num_queries_cookie_invalid;
total->svr.num_queries_discard_timeout +=
a->svr.num_queries_discard_timeout;
total->svr.num_queries_replyaddr_limit +=
a->svr.num_queries_replyaddr_limit;
total->svr.num_queries_wait_limit += a->svr.num_queries_wait_limit;
total->svr.num_dns_error_reports += a->svr.num_dns_error_reports;
total->svr.num_queries_missed_cache += a->svr.num_queries_missed_cache;
total->svr.num_queries_prefetch += a->svr.num_queries_prefetch;
total->svr.num_queries_timed_out += a->svr.num_queries_timed_out;
total->svr.num_query_authzone_up += a->svr.num_query_authzone_up;
total->svr.num_query_authzone_down += a->svr.num_query_authzone_down;
if (total->svr.max_query_time_us < a->svr.max_query_time_us)
total->svr.max_query_time_us = a->svr.max_query_time_us;
total->svr.sum_query_list_size += a->svr.sum_query_list_size;
total->svr.ans_expired += a->svr.ans_expired;
#ifdef USE_DNSCRYPT
total->svr.num_query_dnscrypt_crypted += a->svr.num_query_dnscrypt_crypted;
total->svr.num_query_dnscrypt_cert += a->svr.num_query_dnscrypt_cert;
total->svr.num_query_dnscrypt_cleartext +=
a->svr.num_query_dnscrypt_cleartext;
total->svr.num_query_dnscrypt_crypted_malformed +=
a->svr.num_query_dnscrypt_crypted_malformed;
#endif /* USE_DNSCRYPT */
/* the max size reached is upped to higher of both */
if(a->svr.max_query_list_size > total->svr.max_query_list_size)
total->svr.max_query_list_size = a->svr.max_query_list_size;
if(a->svr.extended) {
int i;
total->svr.qtype_big += a->svr.qtype_big;
total->svr.qclass_big += a->svr.qclass_big;
total->svr.qtcp += a->svr.qtcp;
total->svr.qtcp_outgoing += a->svr.qtcp_outgoing;
total->svr.qudp_outgoing += a->svr.qudp_outgoing;
total->svr.qtls += a->svr.qtls;
total->svr.qtls_resume += a->svr.qtls_resume;
total->svr.qhttps += a->svr.qhttps;
total->svr.qquic += a->svr.qquic;
total->svr.qipv6 += a->svr.qipv6;
total->svr.qbit_QR += a->svr.qbit_QR;
total->svr.qbit_AA += a->svr.qbit_AA;
total->svr.qbit_TC += a->svr.qbit_TC;
total->svr.qbit_RD += a->svr.qbit_RD;
total->svr.qbit_RA += a->svr.qbit_RA;
total->svr.qbit_Z += a->svr.qbit_Z;
total->svr.qbit_AD += a->svr.qbit_AD;
total->svr.qbit_CD += a->svr.qbit_CD;
total->svr.qEDNS += a->svr.qEDNS;
total->svr.qEDNS_DO += a->svr.qEDNS_DO;
total->svr.ans_rcode_nodata += a->svr.ans_rcode_nodata;
total->svr.ans_secure += a->svr.ans_secure;
total->svr.ans_bogus += a->svr.ans_bogus;
total->svr.val_ops += a->svr.val_ops;
total->svr.unwanted_replies += a->svr.unwanted_replies;
total->svr.unwanted_queries += a->svr.unwanted_queries;
total->svr.tcp_accept_usage += a->svr.tcp_accept_usage;
#ifdef USE_CACHEDB
total->svr.num_query_cachedb += a->svr.num_query_cachedb;
#endif
for(i=0; i<UB_STATS_QTYPE_NUM; i++)
total->svr.qtype[i] += a->svr.qtype[i];
for(i=0; i<UB_STATS_QCLASS_NUM; i++)
total->svr.qclass[i] += a->svr.qclass[i];
for(i=0; i<UB_STATS_OPCODE_NUM; i++)
total->svr.qopcode[i] += a->svr.qopcode[i];
for(i=0; i<UB_STATS_RCODE_NUM; i++)
total->svr.ans_rcode[i] += a->svr.ans_rcode[i];
for(i=0; i<NUM_BUCKETS_HIST; i++)
total->svr.hist[i] += a->svr.hist[i];
for(i=0; i<UB_STATS_RPZ_ACTION_NUM; i++)
total->svr.rpz_action[i] += a->svr.rpz_action[i];
}
total->mesh_num_states += a->mesh_num_states;
total->mesh_num_reply_states += a->mesh_num_reply_states;
total->mesh_num_reply_addrs += a->mesh_num_reply_addrs;
total->mesh_jostled += a->mesh_jostled;
total->mesh_dropped += a->mesh_dropped;
total->mesh_replies_sent += a->mesh_replies_sent;
stats_timeval_add(&total->mesh_replies_sum_wait_sec, &total->mesh_replies_sum_wait_usec, a->mesh_replies_sum_wait_sec, a->mesh_replies_sum_wait_usec);
/* the medians are averaged together, this is not as accurate as
* taking the median over all of the data, but is good and fast
* added up here, division later*/
total->mesh_time_median += a->mesh_time_median;
}
void server_stats_insquery(struct ub_server_stats* stats, struct comm_point* c,
uint16_t qtype, uint16_t qclass, struct edns_data* edns,
struct comm_reply* repinfo)
{
uint16_t flags = sldns_buffer_read_u16_at(c->buffer, 2);
if(qtype < UB_STATS_QTYPE_NUM)
stats->qtype[qtype]++;
else stats->qtype_big++;
if(qclass < UB_STATS_QCLASS_NUM)
stats->qclass[qclass]++;
else stats->qclass_big++;
stats->qopcode[ LDNS_OPCODE_WIRE(sldns_buffer_begin(c->buffer)) ]++;
if(c->type != comm_udp) {
if(c->type != comm_doq)
stats->qtcp++;
if(c->ssl != NULL) {
stats->qtls++;
#ifdef HAVE_SSL
if(SSL_session_reused(c->ssl))
stats->qtls_resume++;
#endif
if(c->type == comm_http)
stats->qhttps++;
#ifdef HAVE_NGTCP2
else if(c->type == comm_doq)
stats->qquic++;
#endif
}
}
if(repinfo && addr_is_ip6(&repinfo->remote_addr, repinfo->remote_addrlen))
stats->qipv6++;
if( (flags&BIT_QR) )
stats->qbit_QR++;
if( (flags&BIT_AA) )
stats->qbit_AA++;
if( (flags&BIT_TC) )
stats->qbit_TC++;
if( (flags&BIT_RD) )
stats->qbit_RD++;
if( (flags&BIT_RA) )
stats->qbit_RA++;
if( (flags&BIT_Z) )
stats->qbit_Z++;
if( (flags&BIT_AD) )
stats->qbit_AD++;
if( (flags&BIT_CD) )
stats->qbit_CD++;
if(edns->edns_present) {
stats->qEDNS++;
if( (edns->bits & EDNS_DO) )
stats->qEDNS_DO++;
}
}
void server_stats_insrcode(struct ub_server_stats* stats, sldns_buffer* buf)
{
if(stats->extended && sldns_buffer_limit(buf) != 0) {
int r = (int)LDNS_RCODE_WIRE( sldns_buffer_begin(buf) );
stats->ans_rcode[r] ++;
if(r == 0 && LDNS_ANCOUNT( sldns_buffer_begin(buf) ) == 0)
stats->ans_rcode_nodata ++;
}
}
void server_stats_downstream_cookie(struct ub_server_stats* stats,
struct edns_data* edns)
{
if(!(edns->edns_present && edns->cookie_present)) return;
if(edns->cookie_valid) {
stats->num_queries_cookie_valid++;
} else if(edns->cookie_client) {
stats->num_queries_cookie_client++;
} else {
stats->num_queries_cookie_invalid++;
}
}
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