Adding upstream version 6.1.0.upstream/6.1.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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,
+};