[mirror_iproute2.git] / tc / q_fq.c

/*
 * 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");
	fprintf(stderr, "              [ quantum BYTES ] [ initial_quantum BYTES ]\n");
	fprintf(stderr, "              [ maxrate RATE  ] [ buckets NUMBER ]\n");
	fprintf(stderr, "              [ [no]pacing ] [ refill_delay TIME ]\n");
	fprintf(stderr, "              [ low_rate_threshold RATE ]\n");
	fprintf(stderr, "              [ orphan_mask MASK]\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;
	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;
	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, "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(refill_delay));
	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;

	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]);
		fprintf(f, "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]);
		fprintf(f, "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]);
		fprintf(f, "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]);
		fprintf(f, "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)
			fprintf(f, "nopacing ");
	}
	if (tb[TCA_FQ_QUANTUM] &&
	    RTA_PAYLOAD(tb[TCA_FQ_QUANTUM]) >= sizeof(__u32)) {
		quantum = rta_getattr_u32(tb[TCA_FQ_QUANTUM]);
		fprintf(f, "quantum %u ", 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]);
		fprintf(f, "initial_quantum %u ", 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)
			fprintf(f, "maxrate %s ", sprint_rate(rate, b1));
	}
	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)
			fprintf(f, "defrate %s ", sprint_rate(rate, b1));
	}
	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)
			fprintf(f, "low_rate_threshold %s ", sprint_rate(rate, b1));
	}
	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]);
		fprintf(f, "refill_delay %s ", sprint_time(refill_delay, b1));
	}

	return 0;
}

static int fq_print_xstats(struct qdisc_util *qu, FILE *f,
			   struct rtattr *xstats)
{
	struct tc_fq_qd_stats *st;

	if (xstats == NULL)
		return 0;

	if (RTA_PAYLOAD(xstats) < sizeof(*st))
		return -1;

	st = RTA_DATA(xstats);

	fprintf(f, "  %u flows (%u inactive, %u throttled)",
		st->flows, st->inactive_flows, st->throttled_flows);

	if (st->time_next_delayed_flow > 0)
		fprintf(f, ", next packet delay %llu ns", st->time_next_delayed_flow);

	fprintf(f, "\n  %llu gc, %llu highprio",
		st->gc_flows, st->highprio_packets);

	if (st->tcp_retrans)
		fprintf(f, ", %llu retrans", st->tcp_retrans);

	fprintf(f, ", %llu throttled", st->throttled);

	if (st->unthrottle_latency_ns)
		fprintf(f, ", %u ns latency", st->unthrottle_latency_ns);

	if (st->flows_plimit)
		fprintf(f, ", %llu flows_plimit", st->flows_plimit);

	if (st->pkts_too_long || st->allocation_errors)
		fprintf(f, "\n  %llu too long pkts, %llu alloc errors\n",
			st->pkts_too_long, st->allocation_errors);

	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,
};
Commit	Line	Data
bc113e46 ED	1	/*
	2	* Fair Queue
	3	*
8d5bd8c3	4	* Copyright (C) 2013-2015 Eric Dumazet <edumazet@google.com>
bc113e46 ED	5	*
	6	* Redistribution and use in source and binary forms, with or without
	7	* modification, are permitted provided that the following conditions
	8	* are met:
	9	* 1. Redistributions of source code must retain the above copyright
	10	* notice, this list of conditions, and the following disclaimer,
	11	* without modification.
	12	* 2. Redistributions in binary form must reproduce the above copyright
	13	* notice, this list of conditions and the following disclaimer in the
	14	* documentation and/or other materials provided with the distribution.
	15	* 3. The names of the authors may not be used to endorse or promote products
	16	* derived from this software without specific prior written permission.
	17	*
	18	* Alternatively, provided that this notice is retained in full, this
	19	* software may be distributed under the terms of the GNU General
	20	* Public License ("GPL") version 2, in which case the provisions of the
	21	* GPL apply INSTEAD OF those given above.
	22	*
	23	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	24	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	25	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	26	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	27	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	28	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	29	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	30	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	31	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	32	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	33	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
	34	* DAMAGE.
	35	*
	36	*/
	37
	38	#include <stdio.h>
	39	#include <stdlib.h>
	40	#include <unistd.h>
bc113e46 ED	41	#include <fcntl.h>
	42	#include <sys/socket.h>
	43	#include <netinet/in.h>
	44	#include <arpa/inet.h>
	45	#include <string.h>
aeb199d5	46	#include <stdbool.h>
bc113e46 ED	47
	48	#include "utils.h"
	49	#include "tc_util.h"
	50
	51	static void explain(void)
	52	{
	53	fprintf(stderr, "Usage: ... fq [ limit PACKETS ] [ flow_limit PACKETS ]\n");
	54	fprintf(stderr, " [ quantum BYTES ] [ initial_quantum BYTES ]\n");
	55	fprintf(stderr, " [ maxrate RATE ] [ buckets NUMBER ]\n");
565af7b8	56	fprintf(stderr, " [ [no]pacing ] [ refill_delay TIME ]\n");
ff28b751	57	fprintf(stderr, " [ low_rate_threshold RATE ]\n");
8d5bd8c3	58	fprintf(stderr, " [ orphan_mask MASK]\n");
bc113e46 ED	59	}
	60
	61	static unsigned int ilog2(unsigned int val)
	62	{
	63	unsigned int res = 0;
	64
	65	val--;
	66	while (val) {
	67	res++;
	68	val >>= 1;
	69	}
	70	return res;
	71	}
	72
	73	static int fq_parse_opt(struct qdisc_util qu, int argc, char *argv,
927e3cfb	74	struct nlmsghdr n, const char dev)
bc113e46	75	{
aeb199d5 YY	76	unsigned int plimit;
	77	unsigned int flow_plimit;
	78	unsigned int quantum;
	79	unsigned int initial_quantum;
bc113e46	80	unsigned int buckets = 0;
aeb199d5	81	unsigned int maxrate;
ff28b751	82	unsigned int low_rate_threshold;
aeb199d5	83	unsigned int defrate;
565af7b8	84	unsigned int refill_delay;
8d5bd8c3	85	unsigned int orphan_mask;
aeb199d5 YY	86	bool set_plimit = false;
	87	bool set_flow_plimit = false;
	88	bool set_quantum = false;
	89	bool set_initial_quantum = false;
	90	bool set_maxrate = false;
	91	bool set_defrate = false;
565af7b8	92	bool set_refill_delay = false;
8d5bd8c3	93	bool set_orphan_mask = false;
ff28b751	94	bool set_low_rate_threshold = false;
bc113e46 ED	95	int pacing = -1;
	96	struct rtattr *tail;
	97
	98	while (argc > 0) {
	99	if (strcmp(*argv, "limit") == 0) {
	100	NEXT_ARG();
	101	if (get_unsigned(&plimit, *argv, 0)) {
	102	fprintf(stderr, "Illegal \"limit\"\n");
	103	return -1;
	104	}
aeb199d5	105	set_plimit = true;
bc113e46 ED	106	} else if (strcmp(*argv, "flow_limit") == 0) {
	107	NEXT_ARG();
	108	if (get_unsigned(&flow_plimit, *argv, 0)) {
	109	fprintf(stderr, "Illegal \"flow_limit\"\n");
	110	return -1;
	111	}
aeb199d5	112	set_flow_plimit = true;
bc113e46 ED	113	} else if (strcmp(*argv, "buckets") == 0) {
	114	NEXT_ARG();
	115	if (get_unsigned(&buckets, *argv, 0)) {
	116	fprintf(stderr, "Illegal \"buckets\"\n");
	117	return -1;
	118	}
	119	} else if (strcmp(*argv, "maxrate") == 0) {
	120	NEXT_ARG();
927e3cfb ND	121	if (strchr(*argv, '%')) {
	122	if (get_percent_rate(&maxrate, *argv, dev)) {
	123	fprintf(stderr, "Illegal \"maxrate\"\n");
	124	return -1;
	125	}
	126	} else if (get_rate(&maxrate, *argv)) {
bc113e46 ED	127	fprintf(stderr, "Illegal \"maxrate\"\n");
	128	return -1;
	129	}
aeb199d5	130	set_maxrate = true;
ff28b751 ED	131	} else if (strcmp(*argv, "low_rate_threshold") == 0) {
	132	NEXT_ARG();
	133	if (get_rate(&low_rate_threshold, *argv)) {
	134	fprintf(stderr, "Illegal \"low_rate_threshold\"\n");
	135	return -1;
	136	}
	137	set_low_rate_threshold = true;
bc113e46 ED	138	} else if (strcmp(*argv, "defrate") == 0) {
bc113e46 ED	139	NEXT_ARG();
927e3cfb ND	140	if (strchr(*argv, '%')) {
	141	if (get_percent_rate(&defrate, *argv, dev)) {
	142	fprintf(stderr, "Illegal \"defrate\"\n");
	143	return -1;
	144	}
	145	} else if (get_rate(&defrate, *argv)) {
bc113e46 ED	146	fprintf(stderr, "Illegal \"defrate\"\n");
	147	return -1;
	148	}
aeb199d5	149	set_defrate = true;
bc113e46 ED	150	} else if (strcmp(*argv, "quantum") == 0) {
	151	NEXT_ARG();
	152	if (get_unsigned(&quantum, *argv, 0)) {
	153	fprintf(stderr, "Illegal \"quantum\"\n");
	154	return -1;
	155	}
aeb199d5	156	set_quantum = true;
bc113e46 ED	157	} else if (strcmp(*argv, "initial_quantum") == 0) {
	158	NEXT_ARG();
	159	if (get_unsigned(&initial_quantum, *argv, 0)) {
	160	fprintf(stderr, "Illegal \"initial_quantum\"\n");
	161	return -1;
	162	}
aeb199d5	163	set_initial_quantum = true;
8d5bd8c3 ED	164	} else if (strcmp(*argv, "orphan_mask") == 0) {
	165	NEXT_ARG();
	166	if (get_unsigned(&orphan_mask, *argv, 0)) {
	167	fprintf(stderr, "Illegal \"initial_quantum\"\n");
	168	return -1;
	169	}
	170	set_orphan_mask = true;
565af7b8 PS	171	} else if (strcmp(*argv, "refill_delay") == 0) {
	172	NEXT_ARG();
	173	if (get_time(&refill_delay, *argv)) {
	174	fprintf(stderr, "Illegal \"refill_delay\"\n");
	175	return -1;
	176	}
	177	set_refill_delay = true;
bc113e46 ED	178	} else if (strcmp(*argv, "pacing") == 0) {
	179	pacing = 1;
	180	} else if (strcmp(*argv, "nopacing") == 0) {
	181	pacing = 0;
	182	} else if (strcmp(*argv, "help") == 0) {
	183	explain();
	184	return -1;
	185	} else {
	186	fprintf(stderr, "What is \"%s\"?\n", *argv);
	187	explain();
	188	return -1;
	189	}
	190	argc--; argv++;
	191	}
	192
c14f9d92	193	tail = addattr_nest(n, 1024, TCA_OPTIONS);
bc113e46 ED	194	if (buckets) {
	195	unsigned int log = ilog2(buckets);
	196
	197	addattr_l(n, 1024, TCA_FQ_BUCKETS_LOG,
	198	&log, sizeof(log));
	199	}
aeb199d5	200	if (set_plimit)
bc113e46 ED	201	addattr_l(n, 1024, TCA_FQ_PLIMIT,
bc113e46 ED	202	&plimit, sizeof(plimit));
aeb199d5	203	if (set_flow_plimit)
bc113e46 ED	204	addattr_l(n, 1024, TCA_FQ_FLOW_PLIMIT,
bc113e46 ED	205	&flow_plimit, sizeof(flow_plimit));
aeb199d5	206	if (set_quantum)
bc113e46	207	addattr_l(n, 1024, TCA_FQ_QUANTUM, &quantum, sizeof(quantum));
aeb199d5	208	if (set_initial_quantum)
bc113e46 ED	209	addattr_l(n, 1024, TCA_FQ_INITIAL_QUANTUM,
	210	&initial_quantum, sizeof(initial_quantum));
	211	if (pacing != -1)
	212	addattr_l(n, 1024, TCA_FQ_RATE_ENABLE,
	213	&pacing, sizeof(pacing));
aeb199d5	214	if (set_maxrate)
bc113e46 ED	215	addattr_l(n, 1024, TCA_FQ_FLOW_MAX_RATE,
bc113e46 ED	216	&maxrate, sizeof(maxrate));
ff28b751 ED	217	if (set_low_rate_threshold)
	218	addattr_l(n, 1024, TCA_FQ_LOW_RATE_THRESHOLD,
	219	&low_rate_threshold, sizeof(low_rate_threshold));
aeb199d5	220	if (set_defrate)
bc113e46 ED	221	addattr_l(n, 1024, TCA_FQ_FLOW_DEFAULT_RATE,
bc113e46 ED	222	&defrate, sizeof(defrate));
565af7b8 PS	223	if (set_refill_delay)
565af7b8 PS	224	addattr_l(n, 1024, TCA_FQ_FLOW_REFILL_DELAY,
8fe98398	225	&refill_delay, sizeof(refill_delay));
8d5bd8c3 ED	226	if (set_orphan_mask)
8d5bd8c3 ED	227	addattr_l(n, 1024, TCA_FQ_ORPHAN_MASK,
8fe98398	228	&orphan_mask, sizeof(refill_delay));
c14f9d92	229	addattr_nest_end(n, tail);
bc113e46 ED	230	return 0;
	231	}
	232
	233	static int fq_print_opt(struct qdisc_util qu, FILE f, struct rtattr *opt)
	234	{
	235	struct rtattr *tb[TCA_FQ_MAX + 1];
	236	unsigned int plimit, flow_plimit;
	237	unsigned int buckets_log;
	238	int pacing;
	239	unsigned int rate, quantum;
565af7b8	240	unsigned int refill_delay;
8d5bd8c3	241	unsigned int orphan_mask;
32a121cb	242
bc113e46 ED	243	SPRINT_BUF(b1);
	244
	245	if (opt == NULL)
	246	return 0;
	247
	248	parse_rtattr_nested(tb, TCA_FQ_MAX, opt);
	249
	250	if (tb[TCA_FQ_PLIMIT] &&
	251	RTA_PAYLOAD(tb[TCA_FQ_PLIMIT]) >= sizeof(__u32)) {
	252	plimit = rta_getattr_u32(tb[TCA_FQ_PLIMIT]);
	253	fprintf(f, "limit %up ", plimit);
	254	}
	255	if (tb[TCA_FQ_FLOW_PLIMIT] &&
	256	RTA_PAYLOAD(tb[TCA_FQ_FLOW_PLIMIT]) >= sizeof(__u32)) {
	257	flow_plimit = rta_getattr_u32(tb[TCA_FQ_FLOW_PLIMIT]);
	258	fprintf(f, "flow_limit %up ", flow_plimit);
	259	}
	260	if (tb[TCA_FQ_BUCKETS_LOG] &&
	261	RTA_PAYLOAD(tb[TCA_FQ_BUCKETS_LOG]) >= sizeof(__u32)) {
	262	buckets_log = rta_getattr_u32(tb[TCA_FQ_BUCKETS_LOG]);
	263	fprintf(f, "buckets %u ", 1U << buckets_log);
	264	}
8d5bd8c3 ED	265	if (tb[TCA_FQ_ORPHAN_MASK] &&
	266	RTA_PAYLOAD(tb[TCA_FQ_ORPHAN_MASK]) >= sizeof(__u32)) {
	267	orphan_mask = rta_getattr_u32(tb[TCA_FQ_ORPHAN_MASK]);
	268	fprintf(f, "orphan_mask %u ", orphan_mask);
	269	}
bc113e46 ED	270	if (tb[TCA_FQ_RATE_ENABLE] &&
	271	RTA_PAYLOAD(tb[TCA_FQ_RATE_ENABLE]) >= sizeof(int)) {
	272	pacing = rta_getattr_u32(tb[TCA_FQ_RATE_ENABLE]);
	273	if (pacing == 0)
	274	fprintf(f, "nopacing ");
	275	}
	276	if (tb[TCA_FQ_QUANTUM] &&
	277	RTA_PAYLOAD(tb[TCA_FQ_QUANTUM]) >= sizeof(__u32)) {
	278	quantum = rta_getattr_u32(tb[TCA_FQ_QUANTUM]);
	279	fprintf(f, "quantum %u ", quantum);
	280	}
	281	if (tb[TCA_FQ_INITIAL_QUANTUM] &&
	282	RTA_PAYLOAD(tb[TCA_FQ_INITIAL_QUANTUM]) >= sizeof(__u32)) {
	283	quantum = rta_getattr_u32(tb[TCA_FQ_INITIAL_QUANTUM]);
	284	fprintf(f, "initial_quantum %u ", quantum);
	285	}
	286	if (tb[TCA_FQ_FLOW_MAX_RATE] &&
	287	RTA_PAYLOAD(tb[TCA_FQ_FLOW_MAX_RATE]) >= sizeof(__u32)) {
	288	rate = rta_getattr_u32(tb[TCA_FQ_FLOW_MAX_RATE]);
	289
	290	if (rate != ~0U)
	291	fprintf(f, "maxrate %s ", sprint_rate(rate, b1));
	292	}
	293	if (tb[TCA_FQ_FLOW_DEFAULT_RATE] &&
	294	RTA_PAYLOAD(tb[TCA_FQ_FLOW_DEFAULT_RATE]) >= sizeof(__u32)) {
	295	rate = rta_getattr_u32(tb[TCA_FQ_FLOW_DEFAULT_RATE]);
	296
	297	if (rate != 0)
	298	fprintf(f, "defrate %s ", sprint_rate(rate, b1));
	299	}
ff28b751 ED	300	if (tb[TCA_FQ_LOW_RATE_THRESHOLD] &&
	301	RTA_PAYLOAD(tb[TCA_FQ_LOW_RATE_THRESHOLD]) >= sizeof(__u32)) {
	302	rate = rta_getattr_u32(tb[TCA_FQ_LOW_RATE_THRESHOLD]);
	303
	304	if (rate != 0)
	305	fprintf(f, "low_rate_threshold %s ", sprint_rate(rate, b1));
	306	}
565af7b8 PS	307	if (tb[TCA_FQ_FLOW_REFILL_DELAY] &&
	308	RTA_PAYLOAD(tb[TCA_FQ_FLOW_REFILL_DELAY]) >= sizeof(__u32)) {
	309	refill_delay = rta_getattr_u32(tb[TCA_FQ_FLOW_REFILL_DELAY]);
	310	fprintf(f, "refill_delay %s ", sprint_time(refill_delay, b1));
	311	}
bc113e46 ED	312
	313	return 0;
	314	}
	315
	316	static int fq_print_xstats(struct qdisc_util qu, FILE f,
	317	struct rtattr *xstats)
	318	{
	319	struct tc_fq_qd_stats *st;
	320
	321	if (xstats == NULL)
	322	return 0;
	323
	324	if (RTA_PAYLOAD(xstats) < sizeof(*st))
	325	return -1;
	326
	327	st = RTA_DATA(xstats);
	328
	329	fprintf(f, " %u flows (%u inactive, %u throttled)",
	330	st->flows, st->inactive_flows, st->throttled_flows);
	331
	332	if (st->time_next_delayed_flow > 0)
	333	fprintf(f, ", next packet delay %llu ns", st->time_next_delayed_flow);
	334
	335	fprintf(f, "\n %llu gc, %llu highprio",
	336	st->gc_flows, st->highprio_packets);
	337
	338	if (st->tcp_retrans)
	339	fprintf(f, ", %llu retrans", st->tcp_retrans);
	340
	341	fprintf(f, ", %llu throttled", st->throttled);
	342
39f8caeb ED	343	if (st->unthrottle_latency_ns)
	344	fprintf(f, ", %u ns latency", st->unthrottle_latency_ns);
	345
bc113e46 ED	346	if (st->flows_plimit)
	347	fprintf(f, ", %llu flows_plimit", st->flows_plimit);
	348
	349	if (st->pkts_too_long \|\| st->allocation_errors)
	350	fprintf(f, "\n %llu too long pkts, %llu alloc errors\n",
	351	st->pkts_too_long, st->allocation_errors);
	352
	353	return 0;
	354	}
	355
	356	struct qdisc_util fq_qdisc_util = {
	357	.id = "fq",
	358	.parse_qopt = fq_parse_opt,
	359	.print_qopt = fq_print_opt,
	360	.print_xstats = fq_print_xstats,
	361	};