[mirror_iproute2.git] / tc / q_netem.c

/*
 * q_netem.c		NETEM.
 *
 *		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
 *		2 of the License, or (at your option) any later version.
 *
 * Authors:	Stephen Hemminger <shemminger@linux-foundation.org>
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <ctype.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdint.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <errno.h>

#include "utils.h"
#include "tc_util.h"
#include "tc_common.h"

static void explain(void)
{
	fprintf(stderr,
"Usage: ... netem [ limit PACKETS ]\n" \
"                 [ delay TIME [ JITTER [CORRELATION]]]\n" \
"                 [ distribution {uniform|normal|pareto|paretonormal} ]\n" \
"                 [ corrupt PERCENT [CORRELATION]]\n" \
"                 [ duplicate PERCENT [CORRELATION]]\n" \
"                 [ loss random PERCENT [CORRELATION]]\n" \
"                 [ loss state P13 [P31 [P32 [P23 P14]]]\n" \
"                 [ loss gemodel PERCENT [R [1-H [1-K]]]\n" \
"                 [ ecn ]\n" \
"                 [ reorder PRECENT [CORRELATION] [ gap DISTANCE ]]\n" \
"                 [ rate RATE [PACKETOVERHEAD] [CELLSIZE] [CELLOVERHEAD]]\n");
}

static void explain1(const char *arg)
{
	fprintf(stderr, "Illegal \"%s\"\n", arg);
}

/* Upper bound on size of distribution
 *  really (TCA_BUF_MAX - other headers) / sizeof (__s16)
 */
#define MAX_DIST	(16*1024)

/* scaled value used to percent of maximum. */
static void set_percent(__u32 *percent, double per)
{
	*percent = rint(per * UINT32_MAX);
}

static int get_percent(__u32 *percent, const char *str)
{
	double per;

	if (parse_percent(&per, str))
		return -1;

	set_percent(percent, per);
	return 0;
}

static void print_percent(char *buf, int len, __u32 per)
{
	snprintf(buf, len, "%g%%", (100. * per) / UINT32_MAX);
}

static char *sprint_percent(__u32 per, char *buf)
{
	print_percent(buf, SPRINT_BSIZE-1, per);
	return buf;
}

/*
 * Simplistic file parser for distrbution data.
 * Format is:
 *	# comment line(s)
 *	data0 data1 ...
 */
static int get_distribution(const char *type, __s16 *data, int maxdata)
{
	FILE *f;
	int n;
	long x;
	size_t len;
	char *line = NULL;
	char name[128];

	snprintf(name, sizeof(name), "%s/%s.dist", get_tc_lib(), type);
	if ((f = fopen(name, "r")) == NULL) {
		fprintf(stderr, "No distribution data for %s (%s: %s)\n",
			type, name, strerror(errno));
		return -1;
	}

	n = 0;
	while (getline(&line, &len, f) != -1) {
		char *p, *endp;

		if (*line == '\n' || *line == '#')
			continue;

		for (p = line; ; p = endp) {
			x = strtol(p, &endp, 0);
			if (endp == p)
				break;

			if (n >= maxdata) {
				fprintf(stderr, "%s: too much data\n",
					name);
				n = -1;
				goto error;
			}
			data[n++] = x;
		}
	}
 error:
	free(line);
	fclose(f);
	return n;
}

#define NEXT_IS_NUMBER() (NEXT_ARG_OK() && isdigit(argv[1][0]))
#define NEXT_IS_SIGNED_NUMBER() \
	(NEXT_ARG_OK() && (isdigit(argv[1][0]) || argv[1][0] == '-'))

/* Adjust for the fact that psched_ticks aren't always usecs
   (based on kernel PSCHED_CLOCK configuration */
static int get_ticks(__u32 *ticks, const char *str)
{
	unsigned int t;

	if (get_time(&t, str))
		return -1;

	if (tc_core_time2big(t)) {
		fprintf(stderr, "Illegal %u time (too large)\n", t);
		return -1;
	}

	*ticks = tc_core_time2tick(t);
	return 0;
}

static int netem_parse_opt(struct qdisc_util *qu, int argc, char **argv,
			   struct nlmsghdr *n, const char *dev)
{
	int dist_size = 0;
	struct rtattr *tail;
	struct tc_netem_qopt opt = { .limit = 1000 };
	struct tc_netem_corr cor = {};
	struct tc_netem_reorder reorder = {};
	struct tc_netem_corrupt corrupt = {};
	struct tc_netem_gimodel gimodel;
	struct tc_netem_gemodel gemodel;
	struct tc_netem_rate rate = {};
	__s16 *dist_data = NULL;
	__u16 loss_type = NETEM_LOSS_UNSPEC;
	int present[__TCA_NETEM_MAX] = {};
	__u64 rate64 = 0;

	for ( ; argc > 0; --argc, ++argv) {
		if (matches(*argv, "limit") == 0) {
			NEXT_ARG();
			if (get_size(&opt.limit, *argv)) {
				explain1("limit");
				return -1;
			}
		} else if (matches(*argv, "latency") == 0 ||
			   matches(*argv, "delay") == 0) {
			NEXT_ARG();
			if (get_ticks(&opt.latency, *argv)) {
				explain1("latency");
				return -1;
			}

			if (NEXT_IS_NUMBER()) {
				NEXT_ARG();
				if (get_ticks(&opt.jitter, *argv)) {
					explain1("latency");
					return -1;
				}

				if (NEXT_IS_NUMBER()) {
					NEXT_ARG();
					++present[TCA_NETEM_CORR];
					if (get_percent(&cor.delay_corr, *argv)) {
						explain1("latency");
						return -1;
					}
				}
			}
		} else if (matches(*argv, "loss") == 0 ||
			   matches(*argv, "drop") == 0) {
			if (opt.loss > 0 || loss_type != NETEM_LOSS_UNSPEC) {
				explain1("duplicate loss argument\n");
				return -1;
			}

			NEXT_ARG();
			/* Old (deprecated) random loss model syntax */
			if (isdigit(argv[0][0]))
				goto random_loss_model;

			if (!strcmp(*argv, "random")) {
				NEXT_ARG();
			random_loss_model:
				if (get_percent(&opt.loss, *argv)) {
					explain1("loss percent");
					return -1;
				}
				if (NEXT_IS_NUMBER()) {
					NEXT_ARG();
					++present[TCA_NETEM_CORR];
					if (get_percent(&cor.loss_corr, *argv)) {
						explain1("loss correllation");
						return -1;
					}
				}
			} else if (!strcmp(*argv, "state")) {
				double p13;

				NEXT_ARG();
				if (parse_percent(&p13, *argv)) {
					explain1("loss p13");
					return -1;
				}

				/* set defaults */
				set_percent(&gimodel.p13, p13);
				set_percent(&gimodel.p31, 1. - p13);
				set_percent(&gimodel.p32, 0);
				set_percent(&gimodel.p23, 1.);
				set_percent(&gimodel.p14, 0);
				loss_type = NETEM_LOSS_GI;

				if (!NEXT_IS_NUMBER())
					continue;
				NEXT_ARG();
				if (get_percent(&gimodel.p31, *argv)) {
					explain1("loss p31");
					return -1;
				}

				if (!NEXT_IS_NUMBER())
					continue;
				NEXT_ARG();
				if (get_percent(&gimodel.p32, *argv)) {
					explain1("loss p32");
					return -1;
				}

				if (!NEXT_IS_NUMBER())
					continue;
				NEXT_ARG();
				if (get_percent(&gimodel.p23, *argv)) {
					explain1("loss p23");
					return -1;
				}
				if (!NEXT_IS_NUMBER())
					continue;
				NEXT_ARG();
				if (get_percent(&gimodel.p14, *argv)) {
					explain1("loss p14");
					return -1;
				}

			} else if (!strcmp(*argv, "gemodel")) {
				NEXT_ARG();
				if (get_percent(&gemodel.p, *argv)) {
					explain1("loss gemodel p");
					return -1;
				}

				/* set defaults */
				set_percent(&gemodel.r, 1.);
				set_percent(&gemodel.h, 0);
				set_percent(&gemodel.k1, 0);
				loss_type = NETEM_LOSS_GE;

				if (!NEXT_IS_NUMBER())
					continue;
				NEXT_ARG();
				if (get_percent(&gemodel.r, *argv)) {
					explain1("loss gemodel r");
					return -1;
				}

				if (!NEXT_IS_NUMBER())
					continue;
				NEXT_ARG();
				if (get_percent(&gemodel.h, *argv)) {
					explain1("loss gemodel h");
					return -1;
				}
				/* netem option is "1-h" but kernel
				 * expects "h".
				 */
				gemodel.h = UINT32_MAX - gemodel.h;

				if (!NEXT_IS_NUMBER())
					continue;
				NEXT_ARG();
				if (get_percent(&gemodel.k1, *argv)) {
					explain1("loss gemodel k");
					return -1;
				}
			} else {
				fprintf(stderr, "Unknown loss parameter: %s\n",
					*argv);
				return -1;
			}
		} else if (matches(*argv, "ecn") == 0) {
			present[TCA_NETEM_ECN] = 1;
		} else if (matches(*argv, "reorder") == 0) {
			NEXT_ARG();
			present[TCA_NETEM_REORDER] = 1;
			if (get_percent(&reorder.probability, *argv)) {
				explain1("reorder");
				return -1;
			}
			if (NEXT_IS_NUMBER()) {
				NEXT_ARG();
				++present[TCA_NETEM_CORR];
				if (get_percent(&reorder.correlation, *argv)) {
					explain1("reorder");
					return -1;
				}
			}
		} else if (matches(*argv, "corrupt") == 0) {
			NEXT_ARG();
			present[TCA_NETEM_CORRUPT] = 1;
			if (get_percent(&corrupt.probability, *argv)) {
				explain1("corrupt");
				return -1;
			}
			if (NEXT_IS_NUMBER()) {
				NEXT_ARG();
				++present[TCA_NETEM_CORR];
				if (get_percent(&corrupt.correlation, *argv)) {
					explain1("corrupt");
					return -1;
				}
			}
		} else if (matches(*argv, "gap") == 0) {
			NEXT_ARG();
			if (get_u32(&opt.gap, *argv, 0)) {
				explain1("gap");
				return -1;
			}
		} else if (matches(*argv, "duplicate") == 0) {
			NEXT_ARG();
			if (get_percent(&opt.duplicate, *argv)) {
				explain1("duplicate");
				return -1;
			}
			if (NEXT_IS_NUMBER()) {
				NEXT_ARG();
				if (get_percent(&cor.dup_corr, *argv)) {
					explain1("duplicate");
					return -1;
				}
			}
		} else if (matches(*argv, "distribution") == 0) {
			NEXT_ARG();
			dist_data = calloc(sizeof(dist_data[0]), MAX_DIST);
			dist_size = get_distribution(*argv, dist_data, MAX_DIST);
			if (dist_size <= 0) {
				free(dist_data);
				return -1;
			}
		} else if (matches(*argv, "rate") == 0) {
			++present[TCA_NETEM_RATE];
			NEXT_ARG();
			if (strchr(*argv, '%')) {
				if (get_percent_rate64(&rate64, *argv, dev)) {
					explain1("rate");
					return -1;
				}
			} else if (get_rate64(&rate64, *argv)) {
				explain1("rate");
				return -1;
			}
			if (NEXT_IS_SIGNED_NUMBER()) {
				NEXT_ARG();
				if (get_s32(&rate.packet_overhead, *argv, 0)) {
					explain1("rate");
					return -1;
				}
			}
			if (NEXT_IS_NUMBER()) {
				NEXT_ARG();
				if (get_u32(&rate.cell_size, *argv, 0)) {
					explain1("rate");
					return -1;
				}
			}
			if (NEXT_IS_SIGNED_NUMBER()) {
				NEXT_ARG();
				if (get_s32(&rate.cell_overhead, *argv, 0)) {
					explain1("rate");
					return -1;
				}
			}
		} else if (strcmp(*argv, "help") == 0) {
			explain();
			return -1;
		} else {
			fprintf(stderr, "What is \"%s\"?\n", *argv);
			explain();
			return -1;
		}
	}

	if (reorder.probability) {
		if (opt.latency == 0) {
			fprintf(stderr, "reordering not possible without specifying some delay\n");
			explain();
			return -1;
		}
		if (opt.gap == 0)
			opt.gap = 1;
	} else if (opt.gap > 0) {
		fprintf(stderr, "gap specified without reorder probability\n");
		explain();
		return -1;
	}

	if (present[TCA_NETEM_ECN]) {
		if (opt.loss <= 0 && loss_type == NETEM_LOSS_UNSPEC) {
			fprintf(stderr, "ecn requested without loss model\n");
			explain();
			return -1;
		}
	}

	if (dist_data && (opt.latency == 0 || opt.jitter == 0)) {
		fprintf(stderr, "distribution specified but no latency and jitter values\n");
		explain();
		return -1;
	}

	tail = addattr_nest_compat(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));

	if (present[TCA_NETEM_CORR] &&
	    addattr_l(n, 1024, TCA_NETEM_CORR, &cor, sizeof(cor)) < 0)
		return -1;

	if (present[TCA_NETEM_REORDER] &&
	    addattr_l(n, 1024, TCA_NETEM_REORDER, &reorder, sizeof(reorder)) < 0)
		return -1;

	if (present[TCA_NETEM_ECN] &&
	    addattr_l(n, 1024, TCA_NETEM_ECN, &present[TCA_NETEM_ECN],
		      sizeof(present[TCA_NETEM_ECN])) < 0)
		return -1;

	if (present[TCA_NETEM_CORRUPT] &&
	    addattr_l(n, 1024, TCA_NETEM_CORRUPT, &corrupt, sizeof(corrupt)) < 0)
		return -1;

	if (loss_type != NETEM_LOSS_UNSPEC) {
		struct rtattr *start;

		start = addattr_nest(n, 1024, TCA_NETEM_LOSS | NLA_F_NESTED);
		if (loss_type == NETEM_LOSS_GI) {
			if (addattr_l(n, 1024, NETEM_LOSS_GI,
				      &gimodel, sizeof(gimodel)) < 0)
				return -1;
		} else if (loss_type == NETEM_LOSS_GE) {
			if (addattr_l(n, 1024, NETEM_LOSS_GE,
				      &gemodel, sizeof(gemodel)) < 0)
				return -1;
		} else {
			fprintf(stderr, "loss in the weeds!\n");
			return -1;
		}

		addattr_nest_end(n, start);
	}

	if (present[TCA_NETEM_RATE]) {
		if (rate64 >= (1ULL << 32)) {
			if (addattr_l(n, 1024,
				      TCA_NETEM_RATE64, &rate64, sizeof(rate64)) < 0)
				return -1;
			rate.rate = ~0U;
		} else {
			rate.rate = rate64;
		}
		if (addattr_l(n, 1024, TCA_NETEM_RATE, &rate, sizeof(rate)) < 0)
			return -1;
	}

	if (dist_data) {
		if (addattr_l(n, MAX_DIST * sizeof(dist_data[0]),
			      TCA_NETEM_DELAY_DIST,
			      dist_data, dist_size * sizeof(dist_data[0])) < 0)
			return -1;
		free(dist_data);
	}
	addattr_nest_compat_end(n, tail);
	return 0;
}

static int netem_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
{
	const struct tc_netem_corr *cor = NULL;
	const struct tc_netem_reorder *reorder = NULL;
	const struct tc_netem_corrupt *corrupt = NULL;
	const struct tc_netem_gimodel *gimodel = NULL;
	const struct tc_netem_gemodel *gemodel = NULL;
	int *ecn = NULL;
	struct tc_netem_qopt qopt;
	const struct tc_netem_rate *rate = NULL;
	int len;
	__u64 rate64 = 0;

	SPRINT_BUF(b1);

	if (opt == NULL)
		return 0;

	len = RTA_PAYLOAD(opt) - sizeof(qopt);
	if (len < 0) {
		fprintf(stderr, "options size error\n");
		return -1;
	}
	memcpy(&qopt, RTA_DATA(opt), sizeof(qopt));

	if (len > 0) {
		struct rtattr *tb[TCA_NETEM_MAX+1];

		parse_rtattr(tb, TCA_NETEM_MAX, RTA_DATA(opt) + sizeof(qopt),
			     len);

		if (tb[TCA_NETEM_CORR]) {
			if (RTA_PAYLOAD(tb[TCA_NETEM_CORR]) < sizeof(*cor))
				return -1;
			cor = RTA_DATA(tb[TCA_NETEM_CORR]);
		}
		if (tb[TCA_NETEM_REORDER]) {
			if (RTA_PAYLOAD(tb[TCA_NETEM_REORDER]) < sizeof(*reorder))
				return -1;
			reorder = RTA_DATA(tb[TCA_NETEM_REORDER]);
		}
		if (tb[TCA_NETEM_CORRUPT]) {
			if (RTA_PAYLOAD(tb[TCA_NETEM_CORRUPT]) < sizeof(*corrupt))
				return -1;
			corrupt = RTA_DATA(tb[TCA_NETEM_CORRUPT]);
		}
		if (tb[TCA_NETEM_LOSS]) {
			struct rtattr *lb[NETEM_LOSS_MAX + 1];

			parse_rtattr_nested(lb, NETEM_LOSS_MAX, tb[TCA_NETEM_LOSS]);
			if (lb[NETEM_LOSS_GI])
				gimodel = RTA_DATA(lb[NETEM_LOSS_GI]);
			if (lb[NETEM_LOSS_GE])
				gemodel = RTA_DATA(lb[NETEM_LOSS_GE]);
		}
		if (tb[TCA_NETEM_RATE]) {
			if (RTA_PAYLOAD(tb[TCA_NETEM_RATE]) < sizeof(*rate))
				return -1;
			rate = RTA_DATA(tb[TCA_NETEM_RATE]);
		}
		if (tb[TCA_NETEM_ECN]) {
			if (RTA_PAYLOAD(tb[TCA_NETEM_ECN]) < sizeof(*ecn))
				return -1;
			ecn = RTA_DATA(tb[TCA_NETEM_ECN]);
		}
		if (tb[TCA_NETEM_RATE64]) {
			if (RTA_PAYLOAD(tb[TCA_NETEM_RATE64]) < sizeof(rate64))
				return -1;
			rate64 = rta_getattr_u64(tb[TCA_NETEM_RATE64]);
		}
	}

	fprintf(f, "limit %d", qopt.limit);

	if (qopt.latency) {
		fprintf(f, " delay %s", sprint_ticks(qopt.latency, b1));

		if (qopt.jitter) {
			fprintf(f, "  %s", sprint_ticks(qopt.jitter, b1));
			if (cor && cor->delay_corr)
				fprintf(f, " %s", sprint_percent(cor->delay_corr, b1));
		}
	}

	if (qopt.loss) {
		fprintf(f, " loss %s", sprint_percent(qopt.loss, b1));
		if (cor && cor->loss_corr)
			fprintf(f, " %s", sprint_percent(cor->loss_corr, b1));
	}

	if (gimodel) {
		fprintf(f, " loss state p13 %s", sprint_percent(gimodel->p13, b1));
		fprintf(f, " p31 %s", sprint_percent(gimodel->p31, b1));
		fprintf(f, " p32 %s", sprint_percent(gimodel->p32, b1));
		fprintf(f, " p23 %s", sprint_percent(gimodel->p23, b1));
		fprintf(f, " p14 %s", sprint_percent(gimodel->p14, b1));
	}

	if (gemodel) {
		fprintf(f, " loss gemodel p %s",
			sprint_percent(gemodel->p, b1));
		fprintf(f, " r %s", sprint_percent(gemodel->r, b1));
		fprintf(f, " 1-h %s", sprint_percent(UINT32_MAX -
						     gemodel->h, b1));
		fprintf(f, " 1-k %s", sprint_percent(gemodel->k1, b1));
	}

	if (qopt.duplicate) {
		fprintf(f, " duplicate %s",
			sprint_percent(qopt.duplicate, b1));
		if (cor && cor->dup_corr)
			fprintf(f, " %s", sprint_percent(cor->dup_corr, b1));
	}

	if (reorder && reorder->probability) {
		fprintf(f, " reorder %s",
			sprint_percent(reorder->probability, b1));
		if (reorder->correlation)
			fprintf(f, " %s",
				sprint_percent(reorder->correlation, b1));
	}

	if (corrupt && corrupt->probability) {
		fprintf(f, " corrupt %s",
			sprint_percent(corrupt->probability, b1));
		if (corrupt->correlation)
			fprintf(f, " %s",
				sprint_percent(corrupt->correlation, b1));
	}

	if (rate && rate->rate) {
		if (rate64)
			fprintf(f, " rate %s", sprint_rate(rate64, b1));
		else
			fprintf(f, " rate %s", sprint_rate(rate->rate, b1));
		if (rate->packet_overhead)
			fprintf(f, " packetoverhead %d", rate->packet_overhead);
		if (rate->cell_size)
			fprintf(f, " cellsize %u", rate->cell_size);
		if (rate->cell_overhead)
			fprintf(f, " celloverhead %d", rate->cell_overhead);
	}

	if (ecn)
		fprintf(f, " ecn ");

	if (qopt.gap)
		fprintf(f, " gap %lu", (unsigned long)qopt.gap);


	return 0;
}

struct qdisc_util netem_qdisc_util = {
	.id		= "netem",
	.parse_qopt	= netem_parse_opt,
	.print_qopt	= netem_print_opt,
};
Commit	Line	Data
309a4c90 SH	1	/*
	2	* q_netem.c NETEM.
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; either version
	7	* 2 of the License, or (at your option) any later version.
	8	*
59a935d2	9	* Authors: Stephen Hemminger <shemminger@linux-foundation.org>
309a4c90 SH	10	*
	11	*/
	12
	13	#include <stdio.h>
	14	#include <stdlib.h>
3c7950af SH	15	#include <math.h>
3c7950af SH	16	#include <ctype.h>
309a4c90	17	#include <unistd.h>
309a4c90	18	#include <fcntl.h>
e4beb527	19	#include <stdint.h>
309a4c90 SH	20	#include <sys/socket.h>
	21	#include <netinet/in.h>
	22	#include <arpa/inet.h>
	23	#include <string.h>
b7be3d0c	24	#include <errno.h>
309a4c90 SH	25
	26	#include "utils.h"
	27	#include "tc_util.h"
b7be3d0c	28	#include "tc_common.h"
309a4c90 SH	29
	30	static void explain(void)
	31	{
ae665a52	32	fprintf(stderr,
32a121cb	33	"Usage: ... netem [ limit PACKETS ]\n" \
ea8fc104 SH	34	" [ delay TIME [ JITTER [CORRELATION]]]\n" \
ea8fc104 SH	35	" [ distribution {uniform\|normal\|pareto\|paretonormal} ]\n" \
32a121cb	36	" [ corrupt PERCENT [CORRELATION]]\n" \
b7be3d0c	37	" [ duplicate PERCENT [CORRELATION]]\n" \
3c7950af SH	38	" [ loss random PERCENT [CORRELATION]]\n" \
	39	" [ loss state P13 [P31 [P32 [P23 P14]]]\n" \
	40	" [ loss gemodel PERCENT [R [1-H [1-K]]]\n" \
1070205d	41	" [ ecn ]\n" \
6b8dc4de HPP	42	" [ reorder PRECENT [CORRELATION] [ gap DISTANCE ]]\n" \
6b8dc4de HPP	43	" [ rate RATE [PACKETOVERHEAD] [CELLSIZE] [CELLOVERHEAD]]\n");
309a4c90 SH	44	}
	45
	46	static void explain1(const char *arg)
	47	{
	48	fprintf(stderr, "Illegal \"%s\"\n", arg);
	49	}
	50
3c7950af	51	/* Upper bound on size of distribution
c1b81cb5 SH	52	* really (TCA_BUF_MAX - other headers) / sizeof (__s16)
	53	*/
	54	#define MAX_DIST (16*1024)
	55
3c7950af SH	56	/* scaled value used to percent of maximum. */
	57	static void set_percent(__u32 *percent, double per)
	58	{
e4beb527	59	percent = rint(per UINT32_MAX);
3c7950af SH	60	}
3c7950af SH	61
3c7950af SH	62	static int get_percent(__u32 percent, const char str)
	63	{
	64	double per;
	65
	66	if (parse_percent(&per, str))
	67	return -1;
	68
	69	set_percent(percent, per);
	70	return 0;
	71	}
	72
d1f28cf1	73	static void print_percent(char *buf, int len, __u32 per)
3c7950af	74	{
e4beb527	75	snprintf(buf, len, "%g%%", (100. * per) / UINT32_MAX);
3c7950af SH	76	}
3c7950af SH	77
32a121cb	78	static char sprint_percent(__u32 per, char buf)
3c7950af SH	79	{
	80	print_percent(buf, SPRINT_BSIZE-1, per);
	81	return buf;
	82	}
	83
2e21655e SH	84	/*
	85	* Simplistic file parser for distrbution data.
	86	* Format is:
	87	* # comment line(s)
c1b81cb5	88	* data0 data1 ...
2e21655e	89	*/
c1b81cb5	90	static int get_distribution(const char type, __s16 data, int maxdata)
b7be3d0c SH	91	{
	92	FILE *f;
	93	int n;
2e21655e SH	94	long x;
2e21655e SH	95	size_t len;
fb9b1d0f	96	char *line = NULL;
2e21655e	97	char name[128];
b7be3d0c	98
aa27f88c	99	snprintf(name, sizeof(name), "%s/%s.dist", get_tc_lib(), type);
2e21655e	100	if ((f = fopen(name, "r")) == NULL) {
ae665a52	101	fprintf(stderr, "No distribution data for %s (%s: %s)\n",
2e21655e	102	type, name, strerror(errno));
b7be3d0c SH	103	return -1;
b7be3d0c SH	104	}
ae665a52	105
b7be3d0c	106	n = 0;
2e21655e SH	107	while (getline(&line, &len, f) != -1) {
2e21655e SH	108	char p, endp;
32a121cb	109
2e21655e	110	if (line == '\n' \|\| line == '#')
b7be3d0c SH	111	continue;
b7be3d0c SH	112
2e21655e SH	113	for (p = line; ; p = endp) {
2e21655e SH	114	x = strtol(p, &endp, 0);
ae665a52	115	if (endp == p)
2e21655e SH	116	break;
2e21655e SH	117
c1b81cb5	118	if (n >= maxdata) {
2e21655e SH	119	fprintf(stderr, "%s: too much data\n",
	120	name);
	121	n = -1;
	122	goto error;
	123	}
b7be3d0c SH	124	data[n++] = x;
	125	}
	126	}
2e21655e SH	127	error:
2e21655e SH	128	free(line);
b7be3d0c	129	fclose(f);
b7be3d0c SH	130	return n;
	131	}
	132
3c7950af	133	#define NEXT_IS_NUMBER() (NEXT_ARG_OK() && isdigit(argv[1][0]))
e72ca3fb JN	134	#define NEXT_IS_SIGNED_NUMBER() \
e72ca3fb JN	135	(NEXT_ARG_OK() && (isdigit(argv[1][0]) \|\| argv[1][0] == '-'))
b7be3d0c	136
ae665a52	137	/* Adjust for the fact that psched_ticks aren't always usecs
b7be3d0c SH	138	(based on kernel PSCHED_CLOCK configuration */
	139	static int get_ticks(__u32 ticks, const char str)
	140	{
32a121cb	141	unsigned int t;
b7be3d0c	142
32a121cb	143	if (get_time(&t, str))
b7be3d0c	144	return -1;
ae665a52	145
8f34caaf PM	146	if (tc_core_time2big(t)) {
8f34caaf PM	147	fprintf(stderr, "Illegal %u time (too large)\n", t);
fa565130 SH	148	return -1;
	149	}
	150
8f34caaf	151	*ticks = tc_core_time2tick(t);
b7be3d0c SH	152	return 0;
	153	}
	154
ae665a52	155	static int netem_parse_opt(struct qdisc_util qu, int argc, char *argv,
927e3cfb	156	struct nlmsghdr n, const char dev)
309a4c90	157	{
fcbd0165	158	int dist_size = 0;
2e21655e	159	struct rtattr *tail;
3c7950af	160	struct tc_netem_qopt opt = { .limit = 1000 };
d17b136f PS	161	struct tc_netem_corr cor = {};
	162	struct tc_netem_reorder reorder = {};
	163	struct tc_netem_corrupt corrupt = {};
3c7950af SH	164	struct tc_netem_gimodel gimodel;
3c7950af SH	165	struct tc_netem_gemodel gemodel;
d17b136f	166	struct tc_netem_rate rate = {};
a31a5d59	167	__s16 *dist_data = NULL;
3c7950af	168	__u16 loss_type = NETEM_LOSS_UNSPEC;
d17b136f	169	int present[__TCA_NETEM_MAX] = {};
dad2f72b	170	__u64 rate64 = 0;
309a4c90	171
32a121cb	172	for ( ; argc > 0; --argc, ++argv) {
309a4c90 SH	173	if (matches(*argv, "limit") == 0) {
309a4c90 SH	174	NEXT_ARG();
2e21655e	175	if (get_size(&opt.limit, *argv)) {
309a4c90 SH	176	explain1("limit");
	177	return -1;
	178	}
b7be3d0c SH	179	} else if (matches(*argv, "latency") == 0 \|\|
b7be3d0c SH	180	matches(*argv, "delay") == 0) {
309a4c90	181	NEXT_ARG();
2e21655e	182	if (get_ticks(&opt.latency, *argv)) {
309a4c90 SH	183	explain1("latency");
	184	return -1;
	185	}
b7be3d0c SH	186
	187	if (NEXT_IS_NUMBER()) {
	188	NEXT_ARG();
2e21655e	189	if (get_ticks(&opt.jitter, *argv)) {
b7be3d0c SH	190	explain1("latency");
	191	return -1;
	192	}
	193
	194	if (NEXT_IS_NUMBER()) {
	195	NEXT_ARG();
40076f62	196	++present[TCA_NETEM_CORR];
3c7950af	197	if (get_percent(&cor.delay_corr, *argv)) {
b7be3d0c SH	198	explain1("latency");
	199	return -1;
	200	}
	201	}
	202	}
	203	} else if (matches(*argv, "loss") == 0 \|\|
	204	matches(*argv, "drop") == 0) {
3c7950af SH	205	if (opt.loss > 0 \|\| loss_type != NETEM_LOSS_UNSPEC) {
3c7950af SH	206	explain1("duplicate loss argument\n");
309a4c90 SH	207	return -1;
309a4c90 SH	208	}
3c7950af SH	209
	210	NEXT_ARG();
	211	/* Old (deprecated) random loss model syntax */
	212	if (isdigit(argv[0][0]))
	213	goto random_loss_model;
	214
	215	if (!strcmp(*argv, "random")) {
b7be3d0c	216	NEXT_ARG();
268a9eee	217	random_loss_model:
3c7950af SH	218	if (get_percent(&opt.loss, *argv)) {
	219	explain1("loss percent");
	220	return -1;
	221	}
	222	if (NEXT_IS_NUMBER()) {
	223	NEXT_ARG();
	224	++present[TCA_NETEM_CORR];
	225	if (get_percent(&cor.loss_corr, *argv)) {
	226	explain1("loss correllation");
	227	return -1;
	228	}
	229	}
	230	} else if (!strcmp(*argv, "state")) {
	231	double p13;
	232
	233	NEXT_ARG();
	234	if (parse_percent(&p13, *argv)) {
	235	explain1("loss p13");
	236	return -1;
	237	}
	238
	239	/* set defaults */
	240	set_percent(&gimodel.p13, p13);
	241	set_percent(&gimodel.p31, 1. - p13);
	242	set_percent(&gimodel.p32, 0);
	243	set_percent(&gimodel.p23, 1.);
8f9672af	244	set_percent(&gimodel.p14, 0);
3c7950af SH	245	loss_type = NETEM_LOSS_GI;
	246
	247	if (!NEXT_IS_NUMBER())
	248	continue;
	249	NEXT_ARG();
	250	if (get_percent(&gimodel.p31, *argv)) {
	251	explain1("loss p31");
	252	return -1;
	253	}
	254
	255	if (!NEXT_IS_NUMBER())
	256	continue;
	257	NEXT_ARG();
	258	if (get_percent(&gimodel.p32, *argv)) {
	259	explain1("loss p32");
	260	return -1;
	261	}
	262
	263	if (!NEXT_IS_NUMBER())
	264	continue;
	265	NEXT_ARG();
	266	if (get_percent(&gimodel.p23, *argv)) {
	267	explain1("loss p23");
	268	return -1;
	269	}
8f9672af JV	270	if (!NEXT_IS_NUMBER())
	271	continue;
	272	NEXT_ARG();
	273	if (get_percent(&gimodel.p14, *argv)) {
	274	explain1("loss p14");
	275	return -1;
	276	}
3c7950af SH	277
	278	} else if (!strcmp(*argv, "gemodel")) {
	279	NEXT_ARG();
	280	if (get_percent(&gemodel.p, *argv)) {
	281	explain1("loss gemodel p");
	282	return -1;
	283	}
	284
	285	/* set defaults */
	286	set_percent(&gemodel.r, 1.);
	287	set_percent(&gemodel.h, 0);
3757185b	288	set_percent(&gemodel.k1, 0);
3c7950af SH	289	loss_type = NETEM_LOSS_GE;
	290
	291	if (!NEXT_IS_NUMBER())
	292	continue;
	293	NEXT_ARG();
	294	if (get_percent(&gemodel.r, *argv)) {
	295	explain1("loss gemodel r");
	296	return -1;
	297	}
	298
	299	if (!NEXT_IS_NUMBER())
	300	continue;
	301	NEXT_ARG();
	302	if (get_percent(&gemodel.h, *argv)) {
	303	explain1("loss gemodel h");
	304	return -1;
	305	}
3757185b JV	306	/* netem option is "1-h" but kernel
	307	* expects "h".
	308	*/
e4beb527	309	gemodel.h = UINT32_MAX - gemodel.h;
3c7950af SH	310
	311	if (!NEXT_IS_NUMBER())
	312	continue;
	313	NEXT_ARG();
	314	if (get_percent(&gemodel.k1, *argv)) {
	315	explain1("loss gemodel k");
b7be3d0c SH	316	return -1;
b7be3d0c SH	317	}
3c7950af SH	318	} else {
	319	fprintf(stderr, "Unknown loss parameter: %s\n",
	320	*argv);
	321	return -1;
b7be3d0c	322	}
1070205d	323	} else if (matches(*argv, "ecn") == 0) {
268a9eee	324	present[TCA_NETEM_ECN] = 1;
ea8fc104 SH	325	} else if (matches(*argv, "reorder") == 0) {
ea8fc104 SH	326	NEXT_ARG();
40076f62	327	present[TCA_NETEM_REORDER] = 1;
ea8fc104 SH	328	if (get_percent(&reorder.probability, *argv)) {
	329	explain1("reorder");
	330	return -1;
	331	}
	332	if (NEXT_IS_NUMBER()) {
	333	NEXT_ARG();
40076f62	334	++present[TCA_NETEM_CORR];
ea8fc104 SH	335	if (get_percent(&reorder.correlation, *argv)) {
	336	explain1("reorder");
	337	return -1;
	338	}
	339	}
a31a5d59 SH	340	} else if (matches(*argv, "corrupt") == 0) {
a31a5d59 SH	341	NEXT_ARG();
40076f62	342	present[TCA_NETEM_CORRUPT] = 1;
a31a5d59 SH	343	if (get_percent(&corrupt.probability, *argv)) {
	344	explain1("corrupt");
	345	return -1;
	346	}
	347	if (NEXT_IS_NUMBER()) {
	348	NEXT_ARG();
40076f62	349	++present[TCA_NETEM_CORR];
a31a5d59 SH	350	if (get_percent(&corrupt.correlation, *argv)) {
	351	explain1("corrupt");
	352	return -1;
	353	}
	354	}
309a4c90	355	} else if (matches(*argv, "gap") == 0) {
309a4c90	356	NEXT_ARG();
2e21655e	357	if (get_u32(&opt.gap, *argv, 0)) {
309a4c90 SH	358	explain1("gap");
	359	return -1;
	360	}
ffb79d06	361	} else if (matches(*argv, "duplicate") == 0) {
309a4c90	362	NEXT_ARG();
2e21655e	363	if (get_percent(&opt.duplicate, *argv)) {
ffb79d06	364	explain1("duplicate");
309a4c90 SH	365	return -1;
309a4c90 SH	366	}
b7be3d0c SH	367	if (NEXT_IS_NUMBER()) {
b7be3d0c SH	368	NEXT_ARG();
2e21655e	369	if (get_percent(&cor.dup_corr, *argv)) {
b7be3d0c SH	370	explain1("duplicate");
	371	return -1;
	372	}
	373	}
	374	} else if (matches(*argv, "distribution") == 0) {
309a4c90	375	NEXT_ARG();
c1b81cb5 SH	376	dist_data = calloc(sizeof(dist_data[0]), MAX_DIST);
	377	dist_size = get_distribution(*argv, dist_data, MAX_DIST);
	378	if (dist_size <= 0) {
	379	free(dist_data);
309a4c90	380	return -1;
c1b81cb5	381	}
6b8dc4de HPP	382	} else if (matches(*argv, "rate") == 0) {
	383	++present[TCA_NETEM_RATE];
	384	NEXT_ARG();
927e3cfb ND	385	if (strchr(*argv, '%')) {
	386	if (get_percent_rate64(&rate64, *argv, dev)) {
	387	explain1("rate");
	388	return -1;
	389	}
	390	} else if (get_rate64(&rate64, *argv)) {
6b8dc4de HPP	391	explain1("rate");
	392	return -1;
	393	}
e72ca3fb	394	if (NEXT_IS_SIGNED_NUMBER()) {
6b8dc4de HPP	395	NEXT_ARG();
	396	if (get_s32(&rate.packet_overhead, *argv, 0)) {
	397	explain1("rate");
	398	return -1;
	399	}
	400	}
	401	if (NEXT_IS_NUMBER()) {
	402	NEXT_ARG();
	403	if (get_u32(&rate.cell_size, *argv, 0)) {
	404	explain1("rate");
	405	return -1;
	406	}
	407	}
e72ca3fb	408	if (NEXT_IS_SIGNED_NUMBER()) {
6b8dc4de HPP	409	NEXT_ARG();
	410	if (get_s32(&rate.cell_overhead, *argv, 0)) {
	411	explain1("rate");
	412	return -1;
	413	}
	414	}
309a4c90 SH	415	} else if (strcmp(*argv, "help") == 0) {
	416	explain();
	417	return -1;
	418	} else {
	419	fprintf(stderr, "What is \"%s\"?\n", *argv);
	420	explain();
	421	return -1;
	422	}
309a4c90 SH	423	}
309a4c90 SH	424
ea8fc104 SH	425	if (reorder.probability) {
	426	if (opt.latency == 0) {
	427	fprintf(stderr, "reordering not possible without specifying some delay\n");
14a1c164 VS	428	explain();
14a1c164 VS	429	return -1;
ea8fc104 SH	430	}
	431	if (opt.gap == 0)
	432	opt.gap = 1;
	433	} else if (opt.gap > 0) {
	434	fprintf(stderr, "gap specified without reorder probability\n");
	435	explain();
	436	return -1;
	437	}
	438
1070205d VS	439	if (present[TCA_NETEM_ECN]) {
	440	if (opt.loss <= 0 && loss_type == NETEM_LOSS_UNSPEC) {
	441	fprintf(stderr, "ecn requested without loss model\n");
	442	explain();
	443	return -1;
	444	}
	445	}
	446
a31a5d59	447	if (dist_data && (opt.latency == 0 \|\| opt.jitter == 0)) {
ea8fc104 SH	448	fprintf(stderr, "distribution specified but no latency and jitter values\n");
	449	explain();
	450	return -1;
	451	}
	452
c14f9d92	453	tail = addattr_nest_compat(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
2e21655e	454
40076f62	455	if (present[TCA_NETEM_CORR] &&
c1b81cb5	456	addattr_l(n, 1024, TCA_NETEM_CORR, &cor, sizeof(cor)) < 0)
268a9eee	457	return -1;
a31a5d59	458
3c7950af	459	if (present[TCA_NETEM_REORDER] &&
c1b81cb5	460	addattr_l(n, 1024, TCA_NETEM_REORDER, &reorder, sizeof(reorder)) < 0)
e9bc3c40	461	return -1;
a31a5d59	462
1070205d VS	463	if (present[TCA_NETEM_ECN] &&
	464	addattr_l(n, 1024, TCA_NETEM_ECN, &present[TCA_NETEM_ECN],
	465	sizeof(present[TCA_NETEM_ECN])) < 0)
268a9eee	466	return -1;
1070205d	467
40076f62	468	if (present[TCA_NETEM_CORRUPT] &&
c1b81cb5	469	addattr_l(n, 1024, TCA_NETEM_CORRUPT, &corrupt, sizeof(corrupt)) < 0)
40076f62	470	return -1;
a31a5d59	471
3c7950af SH	472	if (loss_type != NETEM_LOSS_UNSPEC) {
	473	struct rtattr *start;
	474
	475	start = addattr_nest(n, 1024, TCA_NETEM_LOSS \| NLA_F_NESTED);
	476	if (loss_type == NETEM_LOSS_GI) {
	477	if (addattr_l(n, 1024, NETEM_LOSS_GI,
	478	&gimodel, sizeof(gimodel)) < 0)
268a9eee	479	return -1;
3c7950af SH	480	} else if (loss_type == NETEM_LOSS_GE) {
	481	if (addattr_l(n, 1024, NETEM_LOSS_GE,
	482	&gemodel, sizeof(gemodel)) < 0)
268a9eee	483	return -1;
3c7950af SH	484	} else {
	485	fprintf(stderr, "loss in the weeds!\n");
	486	return -1;
	487	}
3d0b7439	488
3c7950af SH	489	addattr_nest_end(n, start);
	490	}
	491
dad2f72b YY	492	if (present[TCA_NETEM_RATE]) {
	493	if (rate64 >= (1ULL << 32)) {
	494	if (addattr_l(n, 1024,
	495	TCA_NETEM_RATE64, &rate64, sizeof(rate64)) < 0)
	496	return -1;
	497	rate.rate = ~0U;
	498	} else {
	499	rate.rate = rate64;
	500	}
	501	if (addattr_l(n, 1024, TCA_NETEM_RATE, &rate, sizeof(rate)) < 0)
	502	return -1;
	503	}
6b8dc4de	504
a31a5d59	505	if (dist_data) {
c1b81cb5 SH	506	if (addattr_l(n, MAX_DIST * sizeof(dist_data[0]),
	507	TCA_NETEM_DELAY_DIST,
	508	dist_data, dist_size * sizeof(dist_data[0])) < 0)
a31a5d59	509	return -1;
c1b81cb5	510	free(dist_data);
2e21655e	511	}
c14f9d92	512	addattr_nest_compat_end(n, tail);
b7be3d0c	513	return 0;
309a4c90 SH	514	}
	515
	516	static int netem_print_opt(struct qdisc_util qu, FILE f, struct rtattr *opt)
	517	{
2e21655e	518	const struct tc_netem_corr *cor = NULL;
ea8fc104	519	const struct tc_netem_reorder *reorder = NULL;
a31a5d59	520	const struct tc_netem_corrupt *corrupt = NULL;
3c7950af SH	521	const struct tc_netem_gimodel *gimodel = NULL;
3c7950af SH	522	const struct tc_netem_gemodel *gemodel = NULL;
1070205d	523	int *ecn = NULL;
2e21655e	524	struct tc_netem_qopt qopt;
6b8dc4de	525	const struct tc_netem_rate *rate = NULL;
a754de3c	526	int len;
dad2f72b	527	__u64 rate64 = 0;
32a121cb	528
309a4c90	529	SPRINT_BUF(b1);
309a4c90 SH	530
	531	if (opt == NULL)
	532	return 0;
	533
a754de3c	534	len = RTA_PAYLOAD(opt) - sizeof(qopt);
2e21655e SH	535	if (len < 0) {
2e21655e SH	536	fprintf(stderr, "options size error\n");
309a4c90	537	return -1;
b7be3d0c	538	}
2e21655e SH	539	memcpy(&qopt, RTA_DATA(opt), sizeof(qopt));
	540
	541	if (len > 0) {
1d2d1cb5	542	struct rtattr *tb[TCA_NETEM_MAX+1];
32a121cb	543
2e21655e SH	544	parse_rtattr(tb, TCA_NETEM_MAX, RTA_DATA(opt) + sizeof(qopt),
2e21655e SH	545	len);
ae665a52	546
2e21655e SH	547	if (tb[TCA_NETEM_CORR]) {
	548	if (RTA_PAYLOAD(tb[TCA_NETEM_CORR]) < sizeof(*cor))
	549	return -1;
	550	cor = RTA_DATA(tb[TCA_NETEM_CORR]);
	551	}
ea8fc104 SH	552	if (tb[TCA_NETEM_REORDER]) {
	553	if (RTA_PAYLOAD(tb[TCA_NETEM_REORDER]) < sizeof(*reorder))
	554	return -1;
	555	reorder = RTA_DATA(tb[TCA_NETEM_REORDER]);
	556	}
a31a5d59 SH	557	if (tb[TCA_NETEM_CORRUPT]) {
	558	if (RTA_PAYLOAD(tb[TCA_NETEM_CORRUPT]) < sizeof(*corrupt))
	559	return -1;
e9bc3c40	560	corrupt = RTA_DATA(tb[TCA_NETEM_CORRUPT]);
a31a5d59	561	}
3c7950af SH	562	if (tb[TCA_NETEM_LOSS]) {
	563	struct rtattr *lb[NETEM_LOSS_MAX + 1];
	564
	565	parse_rtattr_nested(lb, NETEM_LOSS_MAX, tb[TCA_NETEM_LOSS]);
	566	if (lb[NETEM_LOSS_GI])
8f9672af	567	gimodel = RTA_DATA(lb[NETEM_LOSS_GI]);
3c7950af SH	568	if (lb[NETEM_LOSS_GE])
3c7950af SH	569	gemodel = RTA_DATA(lb[NETEM_LOSS_GE]);
3d0b7439	570	}
6b8dc4de HPP	571	if (tb[TCA_NETEM_RATE]) {
	572	if (RTA_PAYLOAD(tb[TCA_NETEM_RATE]) < sizeof(*rate))
	573	return -1;
	574	rate = RTA_DATA(tb[TCA_NETEM_RATE]);
	575	}
1070205d VS	576	if (tb[TCA_NETEM_ECN]) {
	577	if (RTA_PAYLOAD(tb[TCA_NETEM_ECN]) < sizeof(*ecn))
	578	return -1;
	579	ecn = RTA_DATA(tb[TCA_NETEM_ECN]);
	580	}
dad2f72b YY	581	if (tb[TCA_NETEM_RATE64]) {
	582	if (RTA_PAYLOAD(tb[TCA_NETEM_RATE64]) < sizeof(rate64))
	583	return -1;
	584	rate64 = rta_getattr_u64(tb[TCA_NETEM_RATE64]);
	585	}
2e21655e	586	}
309a4c90	587
2e21655e	588	fprintf(f, "limit %d", qopt.limit);
31fa60e0	589
2e21655e SH	590	if (qopt.latency) {
2e21655e SH	591	fprintf(f, " delay %s", sprint_ticks(qopt.latency, b1));
b7be3d0c	592
2e21655e SH	593	if (qopt.jitter) {
	594	fprintf(f, " %s", sprint_ticks(qopt.jitter, b1));
	595	if (cor && cor->delay_corr)
	596	fprintf(f, " %s", sprint_percent(cor->delay_corr, b1));
b7be3d0c SH	597	}
	598	}
	599
2e21655e SH	600	if (qopt.loss) {
	601	fprintf(f, " loss %s", sprint_percent(qopt.loss, b1));
	602	if (cor && cor->loss_corr)
	603	fprintf(f, " %s", sprint_percent(cor->loss_corr, b1));
b7be3d0c SH	604	}
b7be3d0c SH	605
3c7950af SH	606	if (gimodel) {
	607	fprintf(f, " loss state p13 %s", sprint_percent(gimodel->p13, b1));
	608	fprintf(f, " p31 %s", sprint_percent(gimodel->p31, b1));
	609	fprintf(f, " p32 %s", sprint_percent(gimodel->p32, b1));
	610	fprintf(f, " p23 %s", sprint_percent(gimodel->p23, b1));
	611	fprintf(f, " p14 %s", sprint_percent(gimodel->p14, b1));
	612	}
	613
	614	if (gemodel) {
3757185b	615	fprintf(f, " loss gemodel p %s",
3c7950af SH	616	sprint_percent(gemodel->p, b1));
3c7950af SH	617	fprintf(f, " r %s", sprint_percent(gemodel->r, b1));
e4beb527	618	fprintf(f, " 1-h %s", sprint_percent(UINT32_MAX -
3757185b	619	gemodel->h, b1));
3c7950af SH	620	fprintf(f, " 1-k %s", sprint_percent(gemodel->k1, b1));
	621	}
	622
2e21655e	623	if (qopt.duplicate) {
b7be3d0c	624	fprintf(f, " duplicate %s",
2e21655e SH	625	sprint_percent(qopt.duplicate, b1));
	626	if (cor && cor->dup_corr)
	627	fprintf(f, " %s", sprint_percent(cor->dup_corr, b1));
b7be3d0c	628	}
ae665a52	629
ea8fc104	630	if (reorder && reorder->probability) {
ae665a52	631	fprintf(f, " reorder %s",
ea8fc104 SH	632	sprint_percent(reorder->probability, b1));
ea8fc104 SH	633	if (reorder->correlation)
ae665a52	634	fprintf(f, " %s",
ea8fc104 SH	635	sprint_percent(reorder->correlation, b1));
ea8fc104 SH	636	}
b7be3d0c	637
a31a5d59	638	if (corrupt && corrupt->probability) {
ae665a52	639	fprintf(f, " corrupt %s",
a31a5d59 SH	640	sprint_percent(corrupt->probability, b1));
a31a5d59 SH	641	if (corrupt->correlation)
ae665a52	642	fprintf(f, " %s",
a31a5d59 SH	643	sprint_percent(corrupt->correlation, b1));
	644	}
	645
6b8dc4de	646	if (rate && rate->rate) {
dad2f72b YY	647	if (rate64)
	648	fprintf(f, " rate %s", sprint_rate(rate64, b1));
	649	else
	650	fprintf(f, " rate %s", sprint_rate(rate->rate, b1));
6b8dc4de HPP	651	if (rate->packet_overhead)
	652	fprintf(f, " packetoverhead %d", rate->packet_overhead);
	653	if (rate->cell_size)
	654	fprintf(f, " cellsize %u", rate->cell_size);
	655	if (rate->cell_overhead)
	656	fprintf(f, " celloverhead %d", rate->cell_overhead);
	657	}
	658
1070205d VS	659	if (ecn)
	660	fprintf(f, " ecn ");
	661
2e21655e SH	662	if (qopt.gap)
2e21655e SH	663	fprintf(f, " gap %lu", (unsigned long)qopt.gap);
309a4c90	664
1070205d	665
309a4c90 SH	666	return 0;
	667	}
	668
95812b56	669	struct qdisc_util netem_qdisc_util = {
32a121cb	670	.id = "netem",
31fa60e0 SH	671	.parse_qopt = netem_parse_opt,
31fa60e0 SH	672	.print_qopt = netem_print_opt,
309a4c90	673	};