[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"
		"		[ 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"
		"		[ ce_threshold TIME ]\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;
	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;
	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, "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));
	if (set_ce_threshold)
		addattr_l(n, 1024, TCA_FQ_CE_THRESHOLD,
			  &ce_threshold, sizeof(ce_threshold));
	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;

	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));
	}

	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)
			fprintf(f, "ce_threshold %s ", sprint_time(ce_threshold, b1));
	}

	return 0;
}

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

	if (xstats == NULL)
		return 0;

	memset(&_st, 0, sizeof(_st));
	memcpy(&_st, RTA_DATA(xstats), min(RTA_PAYLOAD(xstats), sizeof(*st)));

	st = &_st;

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

	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	{
8589eb4e MC	53	fprintf(stderr,
	54	"Usage: ... fq [ limit PACKETS ] [ flow_limit PACKETS ]\n"
	55	" [ quantum BYTES ] [ initial_quantum BYTES ]\n"
	56	" [ maxrate RATE ] [ buckets NUMBER ]\n"
	57	" [ [no]pacing ] [ refill_delay TIME ]\n"
	58	" [ low_rate_threshold RATE ]\n"
	59	" [ orphan_mask MASK]\n"
	60	" [ ce_threshold TIME ]\n");
bc113e46 ED	61	}
	62
	63	static unsigned int ilog2(unsigned int val)
	64	{
	65	unsigned int res = 0;
	66
	67	val--;
	68	while (val) {
	69	res++;
	70	val >>= 1;
	71	}
	72	return res;
	73	}
	74
	75	static int fq_parse_opt(struct qdisc_util qu, int argc, char *argv,
927e3cfb	76	struct nlmsghdr n, const char dev)
bc113e46	77	{
aeb199d5 YY	78	unsigned int plimit;
	79	unsigned int flow_plimit;
	80	unsigned int quantum;
	81	unsigned int initial_quantum;
bc113e46	82	unsigned int buckets = 0;
aeb199d5	83	unsigned int maxrate;
ff28b751	84	unsigned int low_rate_threshold;
aeb199d5	85	unsigned int defrate;
565af7b8	86	unsigned int refill_delay;
8d5bd8c3	87	unsigned int orphan_mask;
55e106c4	88	unsigned int ce_threshold;
aeb199d5 YY	89	bool set_plimit = false;
	90	bool set_flow_plimit = false;
	91	bool set_quantum = false;
	92	bool set_initial_quantum = false;
	93	bool set_maxrate = false;
	94	bool set_defrate = false;
565af7b8	95	bool set_refill_delay = false;
8d5bd8c3	96	bool set_orphan_mask = false;
ff28b751	97	bool set_low_rate_threshold = false;
55e106c4	98	bool set_ce_threshold = false;
bc113e46 ED	99	int pacing = -1;
	100	struct rtattr *tail;
	101
	102	while (argc > 0) {
	103	if (strcmp(*argv, "limit") == 0) {
	104	NEXT_ARG();
	105	if (get_unsigned(&plimit, *argv, 0)) {
	106	fprintf(stderr, "Illegal \"limit\"\n");
	107	return -1;
	108	}
aeb199d5	109	set_plimit = true;
bc113e46 ED	110	} else if (strcmp(*argv, "flow_limit") == 0) {
	111	NEXT_ARG();
	112	if (get_unsigned(&flow_plimit, *argv, 0)) {
	113	fprintf(stderr, "Illegal \"flow_limit\"\n");
	114	return -1;
	115	}
aeb199d5	116	set_flow_plimit = true;
bc113e46 ED	117	} else if (strcmp(*argv, "buckets") == 0) {
	118	NEXT_ARG();
	119	if (get_unsigned(&buckets, *argv, 0)) {
	120	fprintf(stderr, "Illegal \"buckets\"\n");
	121	return -1;
	122	}
	123	} else if (strcmp(*argv, "maxrate") == 0) {
	124	NEXT_ARG();
927e3cfb ND	125	if (strchr(*argv, '%')) {
	126	if (get_percent_rate(&maxrate, *argv, dev)) {
	127	fprintf(stderr, "Illegal \"maxrate\"\n");
	128	return -1;
	129	}
	130	} else if (get_rate(&maxrate, *argv)) {
bc113e46 ED	131	fprintf(stderr, "Illegal \"maxrate\"\n");
	132	return -1;
	133	}
aeb199d5	134	set_maxrate = true;
ff28b751 ED	135	} else if (strcmp(*argv, "low_rate_threshold") == 0) {
	136	NEXT_ARG();
	137	if (get_rate(&low_rate_threshold, *argv)) {
	138	fprintf(stderr, "Illegal \"low_rate_threshold\"\n");
	139	return -1;
	140	}
	141	set_low_rate_threshold = true;
55e106c4 ED	142	} else if (strcmp(*argv, "ce_threshold") == 0) {
	143	NEXT_ARG();
	144	if (get_time(&ce_threshold, *argv)) {
	145	fprintf(stderr, "Illegal \"ce_threshold\"\n");
	146	return -1;
	147	}
	148	set_ce_threshold = true;
bc113e46 ED	149	} else if (strcmp(*argv, "defrate") == 0) {
bc113e46 ED	150	NEXT_ARG();
927e3cfb ND	151	if (strchr(*argv, '%')) {
	152	if (get_percent_rate(&defrate, *argv, dev)) {
	153	fprintf(stderr, "Illegal \"defrate\"\n");
	154	return -1;
	155	}
	156	} else if (get_rate(&defrate, *argv)) {
bc113e46 ED	157	fprintf(stderr, "Illegal \"defrate\"\n");
	158	return -1;
	159	}
aeb199d5	160	set_defrate = true;
bc113e46 ED	161	} else if (strcmp(*argv, "quantum") == 0) {
	162	NEXT_ARG();
	163	if (get_unsigned(&quantum, *argv, 0)) {
	164	fprintf(stderr, "Illegal \"quantum\"\n");
	165	return -1;
	166	}
aeb199d5	167	set_quantum = true;
bc113e46 ED	168	} else if (strcmp(*argv, "initial_quantum") == 0) {
	169	NEXT_ARG();
	170	if (get_unsigned(&initial_quantum, *argv, 0)) {
	171	fprintf(stderr, "Illegal \"initial_quantum\"\n");
	172	return -1;
	173	}
aeb199d5	174	set_initial_quantum = true;
8d5bd8c3 ED	175	} else if (strcmp(*argv, "orphan_mask") == 0) {
	176	NEXT_ARG();
	177	if (get_unsigned(&orphan_mask, *argv, 0)) {
	178	fprintf(stderr, "Illegal \"initial_quantum\"\n");
	179	return -1;
	180	}
	181	set_orphan_mask = true;
565af7b8 PS	182	} else if (strcmp(*argv, "refill_delay") == 0) {
	183	NEXT_ARG();
	184	if (get_time(&refill_delay, *argv)) {
	185	fprintf(stderr, "Illegal \"refill_delay\"\n");
	186	return -1;
	187	}
	188	set_refill_delay = true;
bc113e46 ED	189	} else if (strcmp(*argv, "pacing") == 0) {
	190	pacing = 1;
	191	} else if (strcmp(*argv, "nopacing") == 0) {
	192	pacing = 0;
	193	} else if (strcmp(*argv, "help") == 0) {
	194	explain();
	195	return -1;
	196	} else {
	197	fprintf(stderr, "What is \"%s\"?\n", *argv);
	198	explain();
	199	return -1;
	200	}
	201	argc--; argv++;
	202	}
	203
c14f9d92	204	tail = addattr_nest(n, 1024, TCA_OPTIONS);
bc113e46 ED	205	if (buckets) {
	206	unsigned int log = ilog2(buckets);
	207
	208	addattr_l(n, 1024, TCA_FQ_BUCKETS_LOG,
	209	&log, sizeof(log));
	210	}
aeb199d5	211	if (set_plimit)
bc113e46 ED	212	addattr_l(n, 1024, TCA_FQ_PLIMIT,
bc113e46 ED	213	&plimit, sizeof(plimit));
aeb199d5	214	if (set_flow_plimit)
bc113e46 ED	215	addattr_l(n, 1024, TCA_FQ_FLOW_PLIMIT,
bc113e46 ED	216	&flow_plimit, sizeof(flow_plimit));
aeb199d5	217	if (set_quantum)
bc113e46	218	addattr_l(n, 1024, TCA_FQ_QUANTUM, &quantum, sizeof(quantum));
aeb199d5	219	if (set_initial_quantum)
bc113e46 ED	220	addattr_l(n, 1024, TCA_FQ_INITIAL_QUANTUM,
	221	&initial_quantum, sizeof(initial_quantum));
	222	if (pacing != -1)
	223	addattr_l(n, 1024, TCA_FQ_RATE_ENABLE,
	224	&pacing, sizeof(pacing));
aeb199d5	225	if (set_maxrate)
bc113e46 ED	226	addattr_l(n, 1024, TCA_FQ_FLOW_MAX_RATE,
bc113e46 ED	227	&maxrate, sizeof(maxrate));
ff28b751 ED	228	if (set_low_rate_threshold)
	229	addattr_l(n, 1024, TCA_FQ_LOW_RATE_THRESHOLD,
	230	&low_rate_threshold, sizeof(low_rate_threshold));
aeb199d5	231	if (set_defrate)
bc113e46 ED	232	addattr_l(n, 1024, TCA_FQ_FLOW_DEFAULT_RATE,
bc113e46 ED	233	&defrate, sizeof(defrate));
565af7b8 PS	234	if (set_refill_delay)
565af7b8 PS	235	addattr_l(n, 1024, TCA_FQ_FLOW_REFILL_DELAY,
8fe98398	236	&refill_delay, sizeof(refill_delay));
8d5bd8c3 ED	237	if (set_orphan_mask)
8d5bd8c3 ED	238	addattr_l(n, 1024, TCA_FQ_ORPHAN_MASK,
8fe98398	239	&orphan_mask, sizeof(refill_delay));
55e106c4 ED	240	if (set_ce_threshold)
	241	addattr_l(n, 1024, TCA_FQ_CE_THRESHOLD,
	242	&ce_threshold, sizeof(ce_threshold));
c14f9d92	243	addattr_nest_end(n, tail);
bc113e46 ED	244	return 0;
	245	}
	246
	247	static int fq_print_opt(struct qdisc_util qu, FILE f, struct rtattr *opt)
	248	{
	249	struct rtattr *tb[TCA_FQ_MAX + 1];
	250	unsigned int plimit, flow_plimit;
	251	unsigned int buckets_log;
	252	int pacing;
	253	unsigned int rate, quantum;
565af7b8	254	unsigned int refill_delay;
8d5bd8c3	255	unsigned int orphan_mask;
55e106c4	256	unsigned int ce_threshold;
32a121cb	257
bc113e46 ED	258	SPRINT_BUF(b1);
	259
	260	if (opt == NULL)
	261	return 0;
	262
	263	parse_rtattr_nested(tb, TCA_FQ_MAX, opt);
	264
	265	if (tb[TCA_FQ_PLIMIT] &&
	266	RTA_PAYLOAD(tb[TCA_FQ_PLIMIT]) >= sizeof(__u32)) {
	267	plimit = rta_getattr_u32(tb[TCA_FQ_PLIMIT]);
	268	fprintf(f, "limit %up ", plimit);
	269	}
	270	if (tb[TCA_FQ_FLOW_PLIMIT] &&
	271	RTA_PAYLOAD(tb[TCA_FQ_FLOW_PLIMIT]) >= sizeof(__u32)) {
	272	flow_plimit = rta_getattr_u32(tb[TCA_FQ_FLOW_PLIMIT]);
	273	fprintf(f, "flow_limit %up ", flow_plimit);
	274	}
	275	if (tb[TCA_FQ_BUCKETS_LOG] &&
	276	RTA_PAYLOAD(tb[TCA_FQ_BUCKETS_LOG]) >= sizeof(__u32)) {
	277	buckets_log = rta_getattr_u32(tb[TCA_FQ_BUCKETS_LOG]);
	278	fprintf(f, "buckets %u ", 1U << buckets_log);
	279	}
8d5bd8c3 ED	280	if (tb[TCA_FQ_ORPHAN_MASK] &&
	281	RTA_PAYLOAD(tb[TCA_FQ_ORPHAN_MASK]) >= sizeof(__u32)) {
	282	orphan_mask = rta_getattr_u32(tb[TCA_FQ_ORPHAN_MASK]);
	283	fprintf(f, "orphan_mask %u ", orphan_mask);
	284	}
bc113e46 ED	285	if (tb[TCA_FQ_RATE_ENABLE] &&
	286	RTA_PAYLOAD(tb[TCA_FQ_RATE_ENABLE]) >= sizeof(int)) {
	287	pacing = rta_getattr_u32(tb[TCA_FQ_RATE_ENABLE]);
	288	if (pacing == 0)
	289	fprintf(f, "nopacing ");
	290	}
	291	if (tb[TCA_FQ_QUANTUM] &&
	292	RTA_PAYLOAD(tb[TCA_FQ_QUANTUM]) >= sizeof(__u32)) {
	293	quantum = rta_getattr_u32(tb[TCA_FQ_QUANTUM]);
	294	fprintf(f, "quantum %u ", quantum);
	295	}
	296	if (tb[TCA_FQ_INITIAL_QUANTUM] &&
	297	RTA_PAYLOAD(tb[TCA_FQ_INITIAL_QUANTUM]) >= sizeof(__u32)) {
	298	quantum = rta_getattr_u32(tb[TCA_FQ_INITIAL_QUANTUM]);
	299	fprintf(f, "initial_quantum %u ", quantum);
	300	}
	301	if (tb[TCA_FQ_FLOW_MAX_RATE] &&
	302	RTA_PAYLOAD(tb[TCA_FQ_FLOW_MAX_RATE]) >= sizeof(__u32)) {
	303	rate = rta_getattr_u32(tb[TCA_FQ_FLOW_MAX_RATE]);
	304
	305	if (rate != ~0U)
	306	fprintf(f, "maxrate %s ", sprint_rate(rate, b1));
	307	}
	308	if (tb[TCA_FQ_FLOW_DEFAULT_RATE] &&
	309	RTA_PAYLOAD(tb[TCA_FQ_FLOW_DEFAULT_RATE]) >= sizeof(__u32)) {
	310	rate = rta_getattr_u32(tb[TCA_FQ_FLOW_DEFAULT_RATE]);
	311
	312	if (rate != 0)
	313	fprintf(f, "defrate %s ", sprint_rate(rate, b1));
	314	}
ff28b751 ED	315	if (tb[TCA_FQ_LOW_RATE_THRESHOLD] &&
	316	RTA_PAYLOAD(tb[TCA_FQ_LOW_RATE_THRESHOLD]) >= sizeof(__u32)) {
	317	rate = rta_getattr_u32(tb[TCA_FQ_LOW_RATE_THRESHOLD]);
	318
	319	if (rate != 0)
	320	fprintf(f, "low_rate_threshold %s ", sprint_rate(rate, b1));
	321	}
565af7b8 PS	322	if (tb[TCA_FQ_FLOW_REFILL_DELAY] &&
	323	RTA_PAYLOAD(tb[TCA_FQ_FLOW_REFILL_DELAY]) >= sizeof(__u32)) {
	324	refill_delay = rta_getattr_u32(tb[TCA_FQ_FLOW_REFILL_DELAY]);
	325	fprintf(f, "refill_delay %s ", sprint_time(refill_delay, b1));
	326	}
bc113e46	327
55e106c4 ED	328	if (tb[TCA_FQ_CE_THRESHOLD] &&
	329	RTA_PAYLOAD(tb[TCA_FQ_CE_THRESHOLD]) >= sizeof(__u32)) {
	330	ce_threshold = rta_getattr_u32(tb[TCA_FQ_CE_THRESHOLD]);
	331	if (ce_threshold != ~0U)
	332	fprintf(f, "ce_threshold %s ", sprint_time(ce_threshold, b1));
	333	}
	334
bc113e46 ED	335	return 0;
	336	}
	337
	338	static int fq_print_xstats(struct qdisc_util qu, FILE f,
	339	struct rtattr *xstats)
	340	{
55e106c4	341	struct tc_fq_qd_stats *st, _st;
bc113e46 ED	342
	343	if (xstats == NULL)
	344	return 0;
	345
55e106c4 ED	346	memset(&_st, 0, sizeof(_st));
55e106c4 ED	347	memcpy(&_st, RTA_DATA(xstats), min(RTA_PAYLOAD(xstats), sizeof(*st)));
bc113e46	348
55e106c4	349	st = &_st;
bc113e46 ED	350
	351	fprintf(f, " %u flows (%u inactive, %u throttled)",
	352	st->flows, st->inactive_flows, st->throttled_flows);
	353
	354	if (st->time_next_delayed_flow > 0)
	355	fprintf(f, ", next packet delay %llu ns", st->time_next_delayed_flow);
	356
	357	fprintf(f, "\n %llu gc, %llu highprio",
	358	st->gc_flows, st->highprio_packets);
	359
	360	if (st->tcp_retrans)
	361	fprintf(f, ", %llu retrans", st->tcp_retrans);
	362
	363	fprintf(f, ", %llu throttled", st->throttled);
	364
39f8caeb ED	365	if (st->unthrottle_latency_ns)
	366	fprintf(f, ", %u ns latency", st->unthrottle_latency_ns);
	367
55e106c4 ED	368	if (st->ce_mark)
	369	fprintf(f, ", %llu ce_mark", st->ce_mark);
	370
bc113e46 ED	371	if (st->flows_plimit)
	372	fprintf(f, ", %llu flows_plimit", st->flows_plimit);
	373
	374	if (st->pkts_too_long \|\| st->allocation_errors)
	375	fprintf(f, "\n %llu too long pkts, %llu alloc errors\n",
	376	st->pkts_too_long, st->allocation_errors);
	377
	378	return 0;
	379	}
	380
	381	struct qdisc_util fq_qdisc_util = {
	382	.id = "fq",
	383	.parse_qopt = fq_parse_opt,
	384	.print_qopt = fq_print_opt,
	385	.print_xstats = fq_print_xstats,
	386	};