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-rw-r--r--src/utils/kxdpgun/stats.c292
1 files changed, 292 insertions, 0 deletions
diff --git a/src/utils/kxdpgun/stats.c b/src/utils/kxdpgun/stats.c
new file mode 100644
index 0000000..f1e4f43
--- /dev/null
+++ b/src/utils/kxdpgun/stats.c
@@ -0,0 +1,292 @@
+/* Copyright (C) 2024 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <assert.h>
+#include <limits.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "contrib/macros.h"
+#include "libknot/codes.h"
+#include "libknot/lookup.h"
+#include "utils/common/msg.h"
+#include "utils/kxdpgun/main.h"
+#include "utils/kxdpgun/stats.h"
+
+pthread_mutex_t stdout_mtx = PTHREAD_MUTEX_INITIALIZER;
+
+void clear_stats(kxdpgun_stats_t *st)
+{
+ pthread_mutex_lock(&st->mutex);
+ st->since = 0;
+ st->until = 0;
+ st->qry_sent = 0;
+ st->synack_recv = 0;
+ st->ans_recv = 0;
+ st->finack_recv = 0;
+ st->rst_recv = 0;
+ st->size_recv = 0;
+ st->wire_recv = 0;
+ st->collected = 0;
+ st->lost = 0;
+ st->errors = 0;
+ memset(st->rcodes_recv, 0, sizeof(st->rcodes_recv));
+ pthread_mutex_unlock(&st->mutex);
+}
+
+size_t collect_stats(kxdpgun_stats_t *into, const kxdpgun_stats_t *what)
+{
+ pthread_mutex_lock(&into->mutex);
+ into->since = what->since;
+ collect_periodic_stats(into, what);
+ size_t res = ++into->collected;
+ pthread_mutex_unlock(&into->mutex);
+ return res;
+}
+
+void collect_periodic_stats(kxdpgun_stats_t *into, const kxdpgun_stats_t *what)
+{
+ into->until = what->until;
+ into->qry_sent += what->qry_sent;
+ into->synack_recv += what->synack_recv;
+ into->ans_recv += what->ans_recv;
+ into->finack_recv += what->finack_recv;
+ into->rst_recv += what->rst_recv;
+ into->size_recv += what->size_recv;
+ into->wire_recv += what->wire_recv;
+ into->lost += what->lost;
+ into->errors += what->errors;
+ for (int i = 0; i < RCODE_MAX; i++) {
+ into->rcodes_recv[i] += what->rcodes_recv[i];
+ }
+}
+
+void plain_stats_header(const xdp_gun_ctx_t *ctx)
+{
+ INFO2("using interface %s, XDP threads %u, IPv%c/%s%s%s, %s mode", ctx->dev, ctx->n_threads,
+ (ctx->ipv6 ? '6' : '4'),
+ (ctx->tcp ? "TCP" : ctx->quic ? "QUIC" : "UDP"),
+ (ctx->sending_mode[0] != '\0' ? " mode " : ""),
+ (ctx->sending_mode[0] != '\0' ? ctx->sending_mode : ""),
+ (knot_eth_xdp_mode(if_nametoindex(ctx->dev)) == KNOT_XDP_MODE_FULL ? "native" : "emulated"));
+ puts(STATS_SECTION_SEP);
+}
+
+/* see:
+ * - https://github.com/DNS-OARC/dns-metrics/blob/main/dns-metrics.schema.json
+ * - https://github.com/DNS-OARC/dns-metrics/issues/16#issuecomment-2139462920
+ */
+void json_stats_header(const xdp_gun_ctx_t *ctx)
+{
+ jsonw_t *w = ctx->jw;
+
+ jsonw_object(w, NULL);
+ {
+ jsonw_ulong(w, "runid", ctx->runid);
+ jsonw_str(w, "type", "header");
+ jsonw_int(w, "schema_version", STATS_SCHEMA_VERSION);
+ jsonw_str(w, "generator", PROGRAM_NAME);
+ jsonw_str(w, "generator_version", PACKAGE_VERSION);
+
+ jsonw_list(w, "generator_params");
+ {
+ for (char **it = ctx->argv; *it != NULL; ++it) {
+ jsonw_str(w, NULL, *it);
+ }
+ }
+ jsonw_end(w);
+
+ jsonw_ulong(w, "time_units_per_sec", 1000000000);
+ if (ctx->stats_period > 0) {
+ jsonw_double(w, "stats_interval", ctx->stats_period / 1000.0);
+ }
+ // TODO: timeout
+
+ // mirror the info given by the plaintext printout
+ jsonw_object(w, "additional_info");
+ {
+ jsonw_str(w, "interface", ctx->dev);
+ jsonw_int(w, "xdp_threads", ctx->n_threads);
+ jsonw_int(w, "ip_version", ctx->ipv6 ? 6 : 4);
+ jsonw_str(w, "transport_layer_proto", ctx->tcp ? "TCP" : (ctx->quic ? "QUIC" : "UDP"));
+ jsonw_object(w, "mode_info");
+ {
+ if (ctx->sending_mode[0] != '\0') {
+ jsonw_str(w, "debug", ctx->sending_mode);
+ }
+ jsonw_str(w, "mode", knot_eth_xdp_mode(if_nametoindex(ctx->dev)) == KNOT_XDP_MODE_FULL
+ ? "native"
+ : "emulated");
+ }
+ jsonw_end(w);
+ }
+ jsonw_end(w);
+ }
+ jsonw_end(w);
+}
+
+void plain_thrd_summary(const xdp_gun_ctx_t *ctx, const kxdpgun_stats_t *st)
+{
+ pthread_mutex_lock(&stdout_mtx);
+
+ char recv_str[40] = "", lost_str[40] = "", err_str[40] = "";
+ if (!(ctx->flags & KNOT_XDP_FILTER_DROP)) {
+ (void)snprintf(recv_str, sizeof(recv_str), ", received %"PRIu64, st->ans_recv);
+ }
+ if (st->lost > 0) {
+ (void)snprintf(lost_str, sizeof(lost_str), ", lost %"PRIu64, st->lost);
+ }
+ if (st->errors > 0) {
+ (void)snprintf(err_str, sizeof(err_str), ", errors %"PRIu64, st->errors);
+ }
+ INFO2("thread#%02u: sent %"PRIu64"%s%s%s",
+ ctx->thread_id, st->qry_sent, recv_str, lost_str, err_str);
+
+ pthread_mutex_unlock(&stdout_mtx);
+}
+
+void json_thrd_summary(const xdp_gun_ctx_t *ctx, const kxdpgun_stats_t *st)
+{
+ pthread_mutex_lock(&stdout_mtx);
+
+ jsonw_t *w = ctx->jw;
+
+ jsonw_object(ctx->jw, NULL);
+ {
+ jsonw_str(w, "type", "thread_summary");
+ jsonw_ulong(w, "runid", ctx->runid);
+ jsonw_ulong(w, "subid", ctx->thread_id);
+ jsonw_ulong(w, "qry_sent", st->qry_sent);
+ jsonw_ulong(w, "ans_recv", st->ans_recv);
+ jsonw_ulong(w, "lost", st->lost);
+ jsonw_ulong(w, "errors", st->errors);
+ }
+ jsonw_end(ctx->jw);
+
+ pthread_mutex_unlock(&stdout_mtx);
+}
+
+void plain_stats(const xdp_gun_ctx_t *ctx, kxdpgun_stats_t *st, stats_type_t stt)
+{
+ pthread_mutex_lock(&st->mutex);
+
+ printf("%s metrics:\n", (stt == STATS_SUM) ? "cumulative" : "periodic");
+
+ bool recv = !(ctx->flags & KNOT_XDP_FILTER_DROP);
+ uint64_t duration = DURATION_US(*st);
+ double rel_start_us = (st->since / 1000.0) - ctx->stats_start_us ;
+ double rel_end_us = rel_start_us + duration;
+
+#define ps(counter) ((typeof(counter))((counter) * 1000 / ((float)duration / 1000)))
+#define pct(counter) ((counter) * 100.0 / st->qry_sent)
+
+ const char *name = ctx->tcp ? "SYNs: " : ctx->quic ? "initials:" : "queries: ";
+ printf("total %s %"PRIu64" (%"PRIu64" pps) (%f%%)\n", name, st->qry_sent,
+ ps(st->qry_sent), 100.0 * st->qry_sent / (duration / 1000000.0 * ctx->qps * ctx->n_threads));
+ if (st->qry_sent > 0 && recv) {
+ if (ctx->tcp || ctx->quic) {
+ name = ctx->tcp ? "established:" : "handshakes: ";
+ printf("total %s %"PRIu64" (%"PRIu64" pps) (%f%%)\n", name,
+ st->synack_recv, ps(st->synack_recv), pct(st->synack_recv));
+ }
+ printf("total replies: %"PRIu64" (%"PRIu64" pps) (%f%%)\n",
+ st->ans_recv, ps(st->ans_recv), pct(st->ans_recv));
+ if (ctx->tcp) {
+ printf("total closed: %"PRIu64" (%"PRIu64" pps) (%f%%)\n",
+ st->finack_recv, ps(st->finack_recv), pct(st->finack_recv));
+ }
+ if (st->rst_recv > 0) {
+ printf("total reset: %"PRIu64" (%"PRIu64" pps) (%f%%)\n",
+ st->rst_recv, ps(st->rst_recv), pct(st->rst_recv));
+ }
+ printf("average DNS reply size: %"PRIu64" B\n",
+ st->ans_recv > 0 ? st->size_recv / st->ans_recv : 0);
+ printf("average Ethernet reply rate: %"PRIu64" bps (%.2f Mbps)\n",
+ ps(st->wire_recv * 8), ps((float)st->wire_recv * 8 / (1000 * 1000)));
+
+ for (int i = 0; i < RCODE_MAX; i++) {
+ if (st->rcodes_recv[i] > 0) {
+ const knot_lookup_t *rcode = knot_lookup_by_id(knot_rcode_names, i);
+ const char *rcname = rcode == NULL ? "unknown" : rcode->name;
+ int space = MAX(9 - strlen(rcname), 0);
+ printf("responded %s: %.*s%"PRIu64"\n",
+ rcname, space, " ", st->rcodes_recv[i]);
+ }
+ }
+ }
+ if (stt == STATS_SUM) {
+ printf("duration: %.4f s\n", duration / 1000000.0);
+ } else {
+ printf("since: %.4fs until: %.4fs\n", rel_start_us / 1000000, rel_end_us / 1000000);
+ }
+
+ pthread_mutex_unlock(&st->mutex);
+}
+
+/* see https://github.com/DNS-OARC/dns-metrics/blob/main/dns-metrics.schema.json
+ * and https://github.com/DNS-OARC/dns-metrics/issues/16#issuecomment-2139462920 */
+void json_stats(const xdp_gun_ctx_t *ctx, kxdpgun_stats_t *st, stats_type_t stt)
+{
+ assert(stt == STATS_PERIODIC || stt == STATS_SUM);
+
+ jsonw_t *w = ctx->jw;
+
+ pthread_mutex_lock(&st->mutex);
+
+ jsonw_object(w, NULL);
+ {
+ jsonw_ulong(w, "runid", ctx->runid);
+ jsonw_str(w, "type", (stt == STATS_PERIODIC) ? "stats_periodic" : "stats_sum");
+ jsonw_ulong(w, "since", st->since);
+ jsonw_ulong(w, "until", st->until);
+ jsonw_ulong(w, "queries", st->qry_sent);
+ jsonw_ulong(w, "responses", st->ans_recv);
+
+ jsonw_object(w, "response_rcodes");
+ {
+ for (size_t i = 0; i < RCODE_MAX; ++i) {
+ if (st->rcodes_recv[i] > 0) {
+ const knot_lookup_t *rc = knot_lookup_by_id(knot_rcode_names, i);
+ jsonw_ulong(w, (rc == NULL) ? "unknown" : rc->name, st->rcodes_recv[i]);
+ }
+ }
+ }
+ jsonw_end(w);
+
+ jsonw_object(w, "conn_info");
+ {
+ jsonw_str(w, "type", ctx->tcp ? "tcp" : (ctx->quic ? "quic_conn" : "udp"));
+
+ // TODO:
+ // packets_sent
+ // packets_recieved
+
+ jsonw_ulong(w, "socket_errors", st->errors);
+ if (ctx->tcp || ctx->quic) {
+ jsonw_ulong(w, "handshakes", st->synack_recv);
+ // TODO: handshakes_failed
+ if (ctx->quic) {
+ // TODO: conn_resumption
+ }
+ }
+ }
+ jsonw_end(w);
+ }
+ jsonw_end(w);
+
+ pthread_mutex_unlock(&st->mutex);
+}
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