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Group the keyid with the counters

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Rather than group key ids together, group key id with its
corresponding counters. This should make growing / shrinking easier
than having keyids then counters.
This commit is contained in:
Matthijs Mekking
2020-04-02 10:50:16 +02:00
parent 31e8b2b13c
commit eb6a8b47d7
1 changed files with 32 additions and 28 deletions
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60
lib/dns/stats.c
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@@ -106,6 +106,9 @@ typedef enum {
static int dnssec_max_keys = 4;
/* Attribute to signal whether a counter is actually a key id. */
#define DNSSECSIGNSTATS_IS_KEY 0x10000
/* DNSSEC sign operation (sign or refresh) */
#define DNSSECSIGNSTATS_SIGN 1
#define DNSSECSIGNSTATS_REFRESH 2
struct dns_stats {
unsigned int magic;
@@ -359,7 +362,7 @@ dns_rcodestats_increment(dns_stats_t *stats, dns_rcode_t code) {
void
dns_dnssecsignstats_increment(dns_stats_t *stats, dns_keytag_t id,
bool refresh) {
isc_statscounter_t operation;
isc_statscounter_t operation = DNSSECSIGNSTATS_SIGN;
uint32_t kval;
REQUIRE(DNS_STATS_VALID(stats) && stats->type == dns_statstype_dnssec);
@@ -369,52 +372,54 @@ dns_dnssecsignstats_increment(dns_stats_t *stats, dns_keytag_t id,
/* What operation are we counting? */
if (refresh) {
operation = (isc_statscounter_t)dnssec_max_keys * 2;
} else {
operation = (isc_statscounter_t)dnssec_max_keys;
operation = DNSSECSIGNSTATS_REFRESH;
}
/* Look up correct counter. */
for (int i = 0; i < dnssec_max_keys; i++) {
uint32_t counter = isc_stats_get_counter(stats->counters, i);
int idx = 3 * i;
uint32_t counter = isc_stats_get_counter(stats->counters, idx);
if (counter == kval) {
/* Match */
isc_stats_increment(stats->counters, operation + i);
isc_stats_increment(stats->counters, (idx + operation));
return;
}
}
/* No match found. Store key in unused slot. */
for (int i = 0; i < dnssec_max_keys; i++) {
uint32_t counter = isc_stats_get_counter(stats->counters, i);
int idx = 3 * i;
uint32_t counter = isc_stats_get_counter(stats->counters, idx);
if (counter == 0) {
isc_stats_set(stats->counters, kval, i);
isc_stats_increment(stats->counters, operation + i);
isc_stats_set(stats->counters, kval, idx);
isc_stats_increment(stats->counters, (idx + operation));
return;
}
}
/* No room, rotate keys. */
for (int i = 1; i < dnssec_max_keys; i++) {
uint32_t keyv = isc_stats_get_counter(stats->counters, i);
int gidx = 3 * i; /* Get key (get index, gidx) */
uint32_t keyv = isc_stats_get_counter(stats->counters, gidx);
uint32_t sign = isc_stats_get_counter(stats->counters,
(dnssec_max_keys + i));
uint32_t refr = isc_stats_get_counter(
stats->counters, (dnssec_max_keys * 2 + i));
(gidx + 1));
uint32_t refr = isc_stats_get_counter(stats->counters,
(gidx + 2));
isc_stats_set(stats->counters, keyv, i - 1);
isc_stats_set(stats->counters, sign, dnssec_max_keys + i - 1);
isc_stats_set(stats->counters, refr,
dnssec_max_keys * 2 + i - 1);
int sidx = gidx - 3; /* Set key, (set index, sidx) */
isc_stats_set(stats->counters, keyv, sidx);
isc_stats_set(stats->counters, sign, (sidx + 1));
isc_stats_set(stats->counters, refr, (sidx + 2));
}
/* Reset counters for new key. */
isc_stats_set(stats->counters, kval, dnssec_max_keys - 1);
isc_stats_set(stats->counters, 0, 2 * dnssec_max_keys - 1);
isc_stats_set(stats->counters, 0, 3 * dnssec_max_keys - 1);
/* Reset counters for new key (new index, nidx). */
int nidx = 3 * (dnssec_max_keys - 1);
isc_stats_set(stats->counters, kval, nidx);
isc_stats_set(stats->counters, 0, (nidx + 1));
isc_stats_set(stats->counters, 0, (nidx + 2));
/* And increment the counter for the given operation. */
isc_stats_increment(stats->counters, operation + dnssec_max_keys - 1);
isc_stats_increment(stats->counters, (nidx + operation));
}
/*%
@@ -525,24 +530,23 @@ static void
dnssec_statsdump(isc_stats_t *stats, bool refresh, isc_stats_dumper_t dump_fn,
void *arg, unsigned int options) {
int i;
isc_statscounter_t operation;
isc_statscounter_t operation = DNSSECSIGNSTATS_SIGN;
if (refresh) {
operation = (isc_statscounter_t)dnssec_max_keys * 2;
} else {
operation = (isc_statscounter_t)dnssec_max_keys;
operation = DNSSECSIGNSTATS_REFRESH;
}
for (i = 0; i < dnssec_max_keys; i++) {
int idx = 3 * i;
uint32_t kval, val;
dns_keytag_t id;
kval = isc_stats_get_counter(stats, i);
kval = isc_stats_get_counter(stats, idx);
if (kval == 0) {
continue;
}
val = isc_stats_get_counter(stats, (operation + i));
val = isc_stats_get_counter(stats, (idx + operation));
if ((options & ISC_STATSDUMP_VERBOSE) == 0 && val == 0) {
continue;
}