summaryrefslogtreecommitdiffstats
path: root/tc/q_fq.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 14:18:53 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 14:18:53 +0000
commita0e0018c9a7ef5ce7f6d2c3ae16aecbbd16a8f67 (patch)
tree8feaf1a1932871b139b3b30be4c09c66489918be /tc/q_fq.c
parentInitial commit. (diff)
downloadiproute2-a0e0018c9a7ef5ce7f6d2c3ae16aecbbd16a8f67.tar.xz
iproute2-a0e0018c9a7ef5ce7f6d2c3ae16aecbbd16a8f67.zip
Adding upstream version 6.1.0.upstream/6.1.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--tc/q_fq.c503
1 files changed, 503 insertions, 0 deletions
diff --git a/tc/q_fq.c b/tc/q_fq.c
new file mode 100644
index 0000000..8dbfc41
--- /dev/null
+++ b/tc/q_fq.c
@@ -0,0 +1,503 @@
+/*
+ * Fair Queue
+ *
+ * Copyright (C) 2013-2015 Eric Dumazet <edumazet@google.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. 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.
+ * 3. The names of the authors may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, provided that this notice is retained in full, this
+ * software may be distributed under the terms of the GNU General
+ * Public License ("GPL") version 2, in which case the provisions of the
+ * GPL apply INSTEAD OF those given above.
+ *
+ * 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
+ * OWNER 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.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+#include <stdbool.h>
+
+#include "utils.h"
+#include "tc_util.h"
+
+static void explain(void)
+{
+ fprintf(stderr,
+ "Usage: ... fq [ limit PACKETS ] [ flow_limit PACKETS ]\n"
+ " [ quantum BYTES ] [ initial_quantum BYTES ]\n"
+ " [ maxrate RATE ] [ buckets NUMBER ]\n"
+ " [ [no]pacing ] [ refill_delay TIME ]\n"
+ " [ low_rate_threshold RATE ]\n"
+ " [ orphan_mask MASK]\n"
+ " [ timer_slack TIME]\n"
+ " [ ce_threshold TIME ]\n"
+ " [ horizon TIME ]\n"
+ " [ horizon_{cap|drop} ]\n");
+}
+
+static unsigned int ilog2(unsigned int val)
+{
+ unsigned int res = 0;
+
+ val--;
+ while (val) {
+ res++;
+ val >>= 1;
+ }
+ return res;
+}
+
+static int fq_parse_opt(struct qdisc_util *qu, int argc, char **argv,
+ struct nlmsghdr *n, const char *dev)
+{
+ unsigned int plimit;
+ unsigned int flow_plimit;
+ unsigned int quantum;
+ unsigned int initial_quantum;
+ unsigned int buckets = 0;
+ unsigned int maxrate;
+ unsigned int low_rate_threshold;
+ unsigned int defrate;
+ unsigned int refill_delay;
+ unsigned int orphan_mask;
+ unsigned int ce_threshold;
+ unsigned int timer_slack;
+ unsigned int horizon;
+ __u8 horizon_drop = 255;
+ bool set_plimit = false;
+ bool set_flow_plimit = false;
+ bool set_quantum = false;
+ bool set_initial_quantum = false;
+ bool set_maxrate = false;
+ bool set_defrate = false;
+ bool set_refill_delay = false;
+ bool set_orphan_mask = false;
+ bool set_low_rate_threshold = false;
+ bool set_ce_threshold = false;
+ bool set_timer_slack = false;
+ bool set_horizon = false;
+ int pacing = -1;
+ struct rtattr *tail;
+
+ while (argc > 0) {
+ if (strcmp(*argv, "limit") == 0) {
+ NEXT_ARG();
+ if (get_unsigned(&plimit, *argv, 0)) {
+ fprintf(stderr, "Illegal \"limit\"\n");
+ return -1;
+ }
+ set_plimit = true;
+ } else if (strcmp(*argv, "flow_limit") == 0) {
+ NEXT_ARG();
+ if (get_unsigned(&flow_plimit, *argv, 0)) {
+ fprintf(stderr, "Illegal \"flow_limit\"\n");
+ return -1;
+ }
+ set_flow_plimit = true;
+ } else if (strcmp(*argv, "buckets") == 0) {
+ NEXT_ARG();
+ if (get_unsigned(&buckets, *argv, 0)) {
+ fprintf(stderr, "Illegal \"buckets\"\n");
+ return -1;
+ }
+ } else if (strcmp(*argv, "maxrate") == 0) {
+ NEXT_ARG();
+ if (strchr(*argv, '%')) {
+ if (get_percent_rate(&maxrate, *argv, dev)) {
+ fprintf(stderr, "Illegal \"maxrate\"\n");
+ return -1;
+ }
+ } else if (get_rate(&maxrate, *argv)) {
+ fprintf(stderr, "Illegal \"maxrate\"\n");
+ return -1;
+ }
+ set_maxrate = true;
+ } else if (strcmp(*argv, "low_rate_threshold") == 0) {
+ NEXT_ARG();
+ if (get_rate(&low_rate_threshold, *argv)) {
+ fprintf(stderr, "Illegal \"low_rate_threshold\"\n");
+ return -1;
+ }
+ set_low_rate_threshold = true;
+ } else if (strcmp(*argv, "ce_threshold") == 0) {
+ NEXT_ARG();
+ if (get_time(&ce_threshold, *argv)) {
+ fprintf(stderr, "Illegal \"ce_threshold\"\n");
+ return -1;
+ }
+ set_ce_threshold = true;
+ } else if (strcmp(*argv, "timer_slack") == 0) {
+ __s64 t64;
+
+ NEXT_ARG();
+ if (get_time64(&t64, *argv)) {
+ fprintf(stderr, "Illegal \"timer_slack\"\n");
+ return -1;
+ }
+ timer_slack = t64;
+ if (timer_slack != t64) {
+ fprintf(stderr, "Illegal (out of range) \"timer_slack\"\n");
+ return -1;
+ }
+ set_timer_slack = true;
+ } else if (strcmp(*argv, "horizon_drop") == 0) {
+ horizon_drop = 1;
+ } else if (strcmp(*argv, "horizon_cap") == 0) {
+ horizon_drop = 0;
+ } else if (strcmp(*argv, "horizon") == 0) {
+ NEXT_ARG();
+ if (get_time(&horizon, *argv)) {
+ fprintf(stderr, "Illegal \"horizon\"\n");
+ return -1;
+ }
+ set_horizon = true;
+ } else if (strcmp(*argv, "defrate") == 0) {
+ NEXT_ARG();
+ if (strchr(*argv, '%')) {
+ if (get_percent_rate(&defrate, *argv, dev)) {
+ fprintf(stderr, "Illegal \"defrate\"\n");
+ return -1;
+ }
+ } else if (get_rate(&defrate, *argv)) {
+ fprintf(stderr, "Illegal \"defrate\"\n");
+ return -1;
+ }
+ set_defrate = true;
+ } else if (strcmp(*argv, "quantum") == 0) {
+ NEXT_ARG();
+ if (get_unsigned(&quantum, *argv, 0)) {
+ fprintf(stderr, "Illegal \"quantum\"\n");
+ return -1;
+ }
+ set_quantum = true;
+ } else if (strcmp(*argv, "initial_quantum") == 0) {
+ NEXT_ARG();
+ if (get_unsigned(&initial_quantum, *argv, 0)) {
+ fprintf(stderr, "Illegal \"initial_quantum\"\n");
+ return -1;
+ }
+ set_initial_quantum = true;
+ } else if (strcmp(*argv, "orphan_mask") == 0) {
+ NEXT_ARG();
+ if (get_unsigned(&orphan_mask, *argv, 0)) {
+ fprintf(stderr, "Illegal \"initial_quantum\"\n");
+ return -1;
+ }
+ set_orphan_mask = true;
+ } else if (strcmp(*argv, "refill_delay") == 0) {
+ NEXT_ARG();
+ if (get_time(&refill_delay, *argv)) {
+ fprintf(stderr, "Illegal \"refill_delay\"\n");
+ return -1;
+ }
+ set_refill_delay = true;
+ } else if (strcmp(*argv, "pacing") == 0) {
+ pacing = 1;
+ } else if (strcmp(*argv, "nopacing") == 0) {
+ pacing = 0;
+ } else if (strcmp(*argv, "help") == 0) {
+ explain();
+ return -1;
+ } else {
+ fprintf(stderr, "What is \"%s\"?\n", *argv);
+ explain();
+ return -1;
+ }
+ argc--; argv++;
+ }
+
+ tail = addattr_nest(n, 1024, TCA_OPTIONS);
+ if (buckets) {
+ unsigned int log = ilog2(buckets);
+
+ addattr_l(n, 1024, TCA_FQ_BUCKETS_LOG,
+ &log, sizeof(log));
+ }
+ if (set_plimit)
+ addattr_l(n, 1024, TCA_FQ_PLIMIT,
+ &plimit, sizeof(plimit));
+ if (set_flow_plimit)
+ addattr_l(n, 1024, TCA_FQ_FLOW_PLIMIT,
+ &flow_plimit, sizeof(flow_plimit));
+ if (set_quantum)
+ addattr_l(n, 1024, TCA_FQ_QUANTUM, &quantum, sizeof(quantum));
+ if (set_initial_quantum)
+ addattr_l(n, 1024, TCA_FQ_INITIAL_QUANTUM,
+ &initial_quantum, sizeof(initial_quantum));
+ if (pacing != -1)
+ addattr_l(n, 1024, TCA_FQ_RATE_ENABLE,
+ &pacing, sizeof(pacing));
+ if (set_maxrate)
+ addattr_l(n, 1024, TCA_FQ_FLOW_MAX_RATE,
+ &maxrate, sizeof(maxrate));
+ if (set_low_rate_threshold)
+ addattr_l(n, 1024, TCA_FQ_LOW_RATE_THRESHOLD,
+ &low_rate_threshold, sizeof(low_rate_threshold));
+ if (set_defrate)
+ addattr_l(n, 1024, TCA_FQ_FLOW_DEFAULT_RATE,
+ &defrate, sizeof(defrate));
+ if (set_refill_delay)
+ addattr_l(n, 1024, TCA_FQ_FLOW_REFILL_DELAY,
+ &refill_delay, sizeof(refill_delay));
+ if (set_orphan_mask)
+ addattr_l(n, 1024, TCA_FQ_ORPHAN_MASK,
+ &orphan_mask, sizeof(orphan_mask));
+ if (set_ce_threshold)
+ addattr_l(n, 1024, TCA_FQ_CE_THRESHOLD,
+ &ce_threshold, sizeof(ce_threshold));
+ if (set_timer_slack)
+ addattr_l(n, 1024, TCA_FQ_TIMER_SLACK,
+ &timer_slack, sizeof(timer_slack));
+ if (set_horizon)
+ addattr_l(n, 1024, TCA_FQ_HORIZON,
+ &horizon, sizeof(horizon));
+ if (horizon_drop != 255)
+ addattr_l(n, 1024, TCA_FQ_HORIZON_DROP,
+ &horizon_drop, sizeof(horizon_drop));
+ addattr_nest_end(n, tail);
+ return 0;
+}
+
+static int fq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
+{
+ struct rtattr *tb[TCA_FQ_MAX + 1];
+ unsigned int plimit, flow_plimit;
+ unsigned int buckets_log;
+ int pacing;
+ unsigned int rate, quantum;
+ unsigned int refill_delay;
+ unsigned int orphan_mask;
+ unsigned int ce_threshold;
+ unsigned int timer_slack;
+ unsigned int horizon;
+ __u8 horizon_drop;
+
+ SPRINT_BUF(b1);
+
+ if (opt == NULL)
+ return 0;
+
+ parse_rtattr_nested(tb, TCA_FQ_MAX, opt);
+
+ if (tb[TCA_FQ_PLIMIT] &&
+ RTA_PAYLOAD(tb[TCA_FQ_PLIMIT]) >= sizeof(__u32)) {
+ plimit = rta_getattr_u32(tb[TCA_FQ_PLIMIT]);
+ print_uint(PRINT_ANY, "limit", "limit %up ", plimit);
+ }
+ if (tb[TCA_FQ_FLOW_PLIMIT] &&
+ RTA_PAYLOAD(tb[TCA_FQ_FLOW_PLIMIT]) >= sizeof(__u32)) {
+ flow_plimit = rta_getattr_u32(tb[TCA_FQ_FLOW_PLIMIT]);
+ print_uint(PRINT_ANY, "flow_limit", "flow_limit %up ",
+ flow_plimit);
+ }
+ if (tb[TCA_FQ_BUCKETS_LOG] &&
+ RTA_PAYLOAD(tb[TCA_FQ_BUCKETS_LOG]) >= sizeof(__u32)) {
+ buckets_log = rta_getattr_u32(tb[TCA_FQ_BUCKETS_LOG]);
+ print_uint(PRINT_ANY, "buckets", "buckets %u ",
+ 1U << buckets_log);
+ }
+ if (tb[TCA_FQ_ORPHAN_MASK] &&
+ RTA_PAYLOAD(tb[TCA_FQ_ORPHAN_MASK]) >= sizeof(__u32)) {
+ orphan_mask = rta_getattr_u32(tb[TCA_FQ_ORPHAN_MASK]);
+ print_uint(PRINT_ANY, "orphan_mask", "orphan_mask %u ",
+ orphan_mask);
+ }
+ if (tb[TCA_FQ_RATE_ENABLE] &&
+ RTA_PAYLOAD(tb[TCA_FQ_RATE_ENABLE]) >= sizeof(int)) {
+ pacing = rta_getattr_u32(tb[TCA_FQ_RATE_ENABLE]);
+ if (pacing == 0)
+ print_bool(PRINT_ANY, "pacing", "nopacing ", false);
+ }
+ if (tb[TCA_FQ_QUANTUM] &&
+ RTA_PAYLOAD(tb[TCA_FQ_QUANTUM]) >= sizeof(__u32)) {
+ quantum = rta_getattr_u32(tb[TCA_FQ_QUANTUM]);
+ print_size(PRINT_ANY, "quantum", "quantum %s ", quantum);
+ }
+ if (tb[TCA_FQ_INITIAL_QUANTUM] &&
+ RTA_PAYLOAD(tb[TCA_FQ_INITIAL_QUANTUM]) >= sizeof(__u32)) {
+ quantum = rta_getattr_u32(tb[TCA_FQ_INITIAL_QUANTUM]);
+ print_size(PRINT_ANY, "initial_quantum", "initial_quantum %s ",
+ quantum);
+ }
+ if (tb[TCA_FQ_FLOW_MAX_RATE] &&
+ RTA_PAYLOAD(tb[TCA_FQ_FLOW_MAX_RATE]) >= sizeof(__u32)) {
+ rate = rta_getattr_u32(tb[TCA_FQ_FLOW_MAX_RATE]);
+
+ if (rate != ~0U)
+ tc_print_rate(PRINT_ANY,
+ "maxrate", "maxrate %s ", rate);
+ }
+ if (tb[TCA_FQ_FLOW_DEFAULT_RATE] &&
+ RTA_PAYLOAD(tb[TCA_FQ_FLOW_DEFAULT_RATE]) >= sizeof(__u32)) {
+ rate = rta_getattr_u32(tb[TCA_FQ_FLOW_DEFAULT_RATE]);
+
+ if (rate != 0)
+ tc_print_rate(PRINT_ANY,
+ "defrate", "defrate %s ", rate);
+ }
+ if (tb[TCA_FQ_LOW_RATE_THRESHOLD] &&
+ RTA_PAYLOAD(tb[TCA_FQ_LOW_RATE_THRESHOLD]) >= sizeof(__u32)) {
+ rate = rta_getattr_u32(tb[TCA_FQ_LOW_RATE_THRESHOLD]);
+
+ if (rate != 0)
+ tc_print_rate(PRINT_ANY, "low_rate_threshold",
+ "low_rate_threshold %s ", rate);
+ }
+ if (tb[TCA_FQ_FLOW_REFILL_DELAY] &&
+ RTA_PAYLOAD(tb[TCA_FQ_FLOW_REFILL_DELAY]) >= sizeof(__u32)) {
+ refill_delay = rta_getattr_u32(tb[TCA_FQ_FLOW_REFILL_DELAY]);
+ print_uint(PRINT_JSON, "refill_delay", NULL, refill_delay);
+ print_string(PRINT_FP, NULL, "refill_delay %s ",
+ sprint_time(refill_delay, b1));
+ }
+
+ if (tb[TCA_FQ_CE_THRESHOLD] &&
+ RTA_PAYLOAD(tb[TCA_FQ_CE_THRESHOLD]) >= sizeof(__u32)) {
+ ce_threshold = rta_getattr_u32(tb[TCA_FQ_CE_THRESHOLD]);
+ if (ce_threshold != ~0U) {
+ print_uint(PRINT_JSON, "ce_threshold", NULL,
+ ce_threshold);
+ print_string(PRINT_FP, NULL, "ce_threshold %s ",
+ sprint_time(ce_threshold, b1));
+ }
+ }
+
+ if (tb[TCA_FQ_TIMER_SLACK] &&
+ RTA_PAYLOAD(tb[TCA_FQ_TIMER_SLACK]) >= sizeof(__u32)) {
+ timer_slack = rta_getattr_u32(tb[TCA_FQ_TIMER_SLACK]);
+ print_uint(PRINT_JSON, "timer_slack", NULL, timer_slack);
+ print_string(PRINT_FP, NULL, "timer_slack %s ",
+ sprint_time64(timer_slack, b1));
+ }
+
+ if (tb[TCA_FQ_HORIZON] &&
+ RTA_PAYLOAD(tb[TCA_FQ_HORIZON]) >= sizeof(__u32)) {
+ horizon = rta_getattr_u32(tb[TCA_FQ_HORIZON]);
+ print_uint(PRINT_JSON, "horizon", NULL, horizon);
+ print_string(PRINT_FP, NULL, "horizon %s ",
+ sprint_time(horizon, b1));
+ }
+
+ if (tb[TCA_FQ_HORIZON_DROP] &&
+ RTA_PAYLOAD(tb[TCA_FQ_HORIZON_DROP]) >= sizeof(__u8)) {
+ horizon_drop = rta_getattr_u8(tb[TCA_FQ_HORIZON_DROP]);
+ if (!horizon_drop)
+ print_null(PRINT_ANY, "horizon_cap", "horizon_cap ", NULL);
+ else
+ print_null(PRINT_ANY, "horizon_drop", "horizon_drop ", NULL);
+ }
+
+ return 0;
+}
+
+static int fq_print_xstats(struct qdisc_util *qu, FILE *f,
+ struct rtattr *xstats)
+{
+ struct tc_fq_qd_stats *st, _st;
+
+ SPRINT_BUF(b1);
+
+ if (xstats == NULL)
+ return 0;
+
+ memset(&_st, 0, sizeof(_st));
+ memcpy(&_st, RTA_DATA(xstats), min(RTA_PAYLOAD(xstats), sizeof(*st)));
+
+ st = &_st;
+
+ print_uint(PRINT_ANY, "flows", " flows %u", st->flows);
+ print_uint(PRINT_ANY, "inactive", " (inactive %u", st->inactive_flows);
+ print_uint(PRINT_ANY, "throttled", " throttled %u)",
+ st->throttled_flows);
+
+ if (st->time_next_delayed_flow > 0) {
+ print_lluint(PRINT_JSON, "next_packet_delay", NULL,
+ st->time_next_delayed_flow);
+ print_string(PRINT_FP, NULL, " next_packet_delay %s",
+ sprint_time64(st->time_next_delayed_flow, b1));
+ }
+
+ print_nl();
+ print_lluint(PRINT_ANY, "gc", " gc %llu", st->gc_flows);
+ print_lluint(PRINT_ANY, "highprio", " highprio %llu",
+ st->highprio_packets);
+
+ if (st->tcp_retrans)
+ print_lluint(PRINT_ANY, "retrans", " retrans %llu",
+ st->tcp_retrans);
+
+ print_lluint(PRINT_ANY, "throttled", " throttled %llu", st->throttled);
+
+ if (st->unthrottle_latency_ns) {
+ print_uint(PRINT_JSON, "latency", NULL,
+ st->unthrottle_latency_ns);
+ print_string(PRINT_FP, NULL, " latency %s",
+ sprint_time64(st->unthrottle_latency_ns, b1));
+ }
+
+ if (st->ce_mark)
+ print_lluint(PRINT_ANY, "ce_mark", " ce_mark %llu",
+ st->ce_mark);
+
+ if (st->flows_plimit)
+ print_lluint(PRINT_ANY, "flows_plimit", " flows_plimit %llu",
+ st->flows_plimit);
+
+ if (st->pkts_too_long || st->allocation_errors ||
+ st->horizon_drops || st->horizon_caps) {
+ print_nl();
+ if (st->pkts_too_long)
+ print_lluint(PRINT_ANY, "pkts_too_long",
+ " pkts_too_long %llu",
+ st->pkts_too_long);
+ if (st->allocation_errors)
+ print_lluint(PRINT_ANY, "alloc_errors",
+ " alloc_errors %llu",
+ st->allocation_errors);
+ if (st->horizon_drops)
+ print_lluint(PRINT_ANY, "horizon_drops",
+ " horizon_drops %llu",
+ st->horizon_drops);
+ if (st->horizon_caps)
+ print_lluint(PRINT_ANY, "horizon_caps",
+ " horizon_caps %llu",
+ st->horizon_caps);
+ }
+
+ return 0;
+}
+
+struct qdisc_util fq_qdisc_util = {
+ .id = "fq",
+ .parse_qopt = fq_parse_opt,
+ .print_qopt = fq_print_opt,
+ .print_xstats = fq_print_xstats,
+};