[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 <syslog.h>
#include <fcntl.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)

static const double max_percent_value = 0xffffffff;

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


/* Parse either a fraction '.3' or percent '30%
 * return: 0 = ok, -1 = error, 1 = out of range
 */
static int parse_percent(double *val, const char *str)
{
	char *p;

	*val = strtod(str, &p) / 100.;
	if (*p && strcmp(p, "%"))
		return -1;

	return 0;
}

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. * (double) per / max_percent_value);
}

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)
{
	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;

	memset(&cor, 0, sizeof(cor));
	memset(&reorder, 0, sizeof(reorder));
	memset(&corrupt, 0, sizeof(corrupt));
	memset(&rate, 0, sizeof(rate));
	memset(present, 0, sizeof(present));

	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 = max_percent_value - 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 (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;
		}
	}

	tail = NLMSG_TAIL(n);

	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;
	}

	if (addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)) < 0)
		return -1;

	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);
	}
	tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) 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 = RTA_PAYLOAD(opt) - sizeof(qopt);
	__u64 rate64 = 0;

	SPRINT_BUF(b1);

	if (opt == NULL)
		return 0;

	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(max_percent_value -
						     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 SH	17	#include <unistd.h>
	18	#include <syslog.h>
	19	#include <fcntl.h>
	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	static const double max_percent_value = 0xffffffff;
	57
	58	/* scaled value used to percent of maximum. */
	59	static void set_percent(__u32 *percent, double per)
	60	{
32a121cb	61	percent = (unsigned int) rint(per max_percent_value);
3c7950af SH	62	}
	63
	64
	65	/* Parse either a fraction '.3' or percent '30%
	66	* return: 0 = ok, -1 = error, 1 = out of range
	67	*/
	68	static int parse_percent(double val, const char str)
	69	{
	70	char *p;
	71
	72	*val = strtod(str, &p) / 100.;
32a121cb	73	if (*p && strcmp(p, "%"))
3c7950af SH	74	return -1;
	75
	76	return 0;
	77	}
	78
	79	static int get_percent(__u32 percent, const char str)
	80	{
	81	double per;
	82
	83	if (parse_percent(&per, str))
	84	return -1;
	85
	86	set_percent(percent, per);
	87	return 0;
	88	}
	89
d1f28cf1	90	static void print_percent(char *buf, int len, __u32 per)
3c7950af SH	91	{
	92	snprintf(buf, len, "%g%%", 100. * (double) per / max_percent_value);
	93	}
	94
32a121cb	95	static char sprint_percent(__u32 per, char buf)
3c7950af SH	96	{
	97	print_percent(buf, SPRINT_BSIZE-1, per);
	98	return buf;
	99	}
	100
2e21655e SH	101	/*
	102	* Simplistic file parser for distrbution data.
	103	* Format is:
	104	* # comment line(s)
c1b81cb5	105	* data0 data1 ...
2e21655e	106	*/
c1b81cb5	107	static int get_distribution(const char type, __s16 data, int maxdata)
b7be3d0c SH	108	{
	109	FILE *f;
	110	int n;
2e21655e SH	111	long x;
2e21655e SH	112	size_t len;
fb9b1d0f	113	char *line = NULL;
2e21655e	114	char name[128];
b7be3d0c	115
aa27f88c	116	snprintf(name, sizeof(name), "%s/%s.dist", get_tc_lib(), type);
2e21655e	117	if ((f = fopen(name, "r")) == NULL) {
ae665a52	118	fprintf(stderr, "No distribution data for %s (%s: %s)\n",
2e21655e	119	type, name, strerror(errno));
b7be3d0c SH	120	return -1;
b7be3d0c SH	121	}
ae665a52	122
b7be3d0c	123	n = 0;
2e21655e SH	124	while (getline(&line, &len, f) != -1) {
2e21655e SH	125	char p, endp;
32a121cb	126
2e21655e	127	if (line == '\n' \|\| line == '#')
b7be3d0c SH	128	continue;
b7be3d0c SH	129
2e21655e SH	130	for (p = line; ; p = endp) {
2e21655e SH	131	x = strtol(p, &endp, 0);
ae665a52	132	if (endp == p)
2e21655e SH	133	break;
2e21655e SH	134
c1b81cb5	135	if (n >= maxdata) {
2e21655e SH	136	fprintf(stderr, "%s: too much data\n",
	137	name);
	138	n = -1;
	139	goto error;
	140	}
b7be3d0c SH	141	data[n++] = x;
	142	}
	143	}
2e21655e SH	144	error:
2e21655e SH	145	free(line);
b7be3d0c	146	fclose(f);
b7be3d0c SH	147	return n;
	148	}
	149
3c7950af	150	#define NEXT_IS_NUMBER() (NEXT_ARG_OK() && isdigit(argv[1][0]))
e72ca3fb JN	151	#define NEXT_IS_SIGNED_NUMBER() \
e72ca3fb JN	152	(NEXT_ARG_OK() && (isdigit(argv[1][0]) \|\| argv[1][0] == '-'))
b7be3d0c	153
ae665a52	154	/* Adjust for the fact that psched_ticks aren't always usecs
b7be3d0c SH	155	(based on kernel PSCHED_CLOCK configuration */
	156	static int get_ticks(__u32 ticks, const char str)
	157	{
32a121cb	158	unsigned int t;
b7be3d0c	159
32a121cb	160	if (get_time(&t, str))
b7be3d0c	161	return -1;
ae665a52	162
8f34caaf PM	163	if (tc_core_time2big(t)) {
8f34caaf PM	164	fprintf(stderr, "Illegal %u time (too large)\n", t);
fa565130 SH	165	return -1;
	166	}
	167
8f34caaf	168	*ticks = tc_core_time2tick(t);
b7be3d0c SH	169	return 0;
	170	}
	171
ae665a52	172	static int netem_parse_opt(struct qdisc_util qu, int argc, char *argv,
309a4c90 SH	173	struct nlmsghdr *n)
309a4c90 SH	174	{
fcbd0165	175	int dist_size = 0;
2e21655e	176	struct rtattr *tail;
3c7950af	177	struct tc_netem_qopt opt = { .limit = 1000 };
2e21655e	178	struct tc_netem_corr cor;
ea8fc104	179	struct tc_netem_reorder reorder;
a31a5d59	180	struct tc_netem_corrupt corrupt;
3c7950af SH	181	struct tc_netem_gimodel gimodel;
3c7950af SH	182	struct tc_netem_gemodel gemodel;
6b8dc4de	183	struct tc_netem_rate rate;
a31a5d59	184	__s16 *dist_data = NULL;
3c7950af	185	__u16 loss_type = NETEM_LOSS_UNSPEC;
40076f62	186	int present[__TCA_NETEM_MAX];
dad2f72b	187	__u64 rate64 = 0;
309a4c90	188
2e21655e	189	memset(&cor, 0, sizeof(cor));
ea8fc104	190	memset(&reorder, 0, sizeof(reorder));
a31a5d59	191	memset(&corrupt, 0, sizeof(corrupt));
6b8dc4de	192	memset(&rate, 0, sizeof(rate));
40076f62	193	memset(present, 0, sizeof(present));
309a4c90	194
32a121cb	195	for ( ; argc > 0; --argc, ++argv) {
309a4c90 SH	196	if (matches(*argv, "limit") == 0) {
309a4c90 SH	197	NEXT_ARG();
2e21655e	198	if (get_size(&opt.limit, *argv)) {
309a4c90 SH	199	explain1("limit");
	200	return -1;
	201	}
b7be3d0c SH	202	} else if (matches(*argv, "latency") == 0 \|\|
b7be3d0c SH	203	matches(*argv, "delay") == 0) {
309a4c90	204	NEXT_ARG();
2e21655e	205	if (get_ticks(&opt.latency, *argv)) {
309a4c90 SH	206	explain1("latency");
	207	return -1;
	208	}
b7be3d0c SH	209
	210	if (NEXT_IS_NUMBER()) {
	211	NEXT_ARG();
2e21655e	212	if (get_ticks(&opt.jitter, *argv)) {
b7be3d0c SH	213	explain1("latency");
	214	return -1;
	215	}
	216
	217	if (NEXT_IS_NUMBER()) {
	218	NEXT_ARG();
40076f62	219	++present[TCA_NETEM_CORR];
3c7950af	220	if (get_percent(&cor.delay_corr, *argv)) {
b7be3d0c SH	221	explain1("latency");
	222	return -1;
	223	}
	224	}
	225	}
	226	} else if (matches(*argv, "loss") == 0 \|\|
	227	matches(*argv, "drop") == 0) {
3c7950af SH	228	if (opt.loss > 0 \|\| loss_type != NETEM_LOSS_UNSPEC) {
3c7950af SH	229	explain1("duplicate loss argument\n");
309a4c90 SH	230	return -1;
309a4c90 SH	231	}
3c7950af SH	232
	233	NEXT_ARG();
	234	/* Old (deprecated) random loss model syntax */
	235	if (isdigit(argv[0][0]))
	236	goto random_loss_model;
	237
	238	if (!strcmp(*argv, "random")) {
b7be3d0c	239	NEXT_ARG();
32a121cb	240	random_loss_model:
3c7950af SH	241	if (get_percent(&opt.loss, *argv)) {
	242	explain1("loss percent");
	243	return -1;
	244	}
	245	if (NEXT_IS_NUMBER()) {
	246	NEXT_ARG();
	247	++present[TCA_NETEM_CORR];
	248	if (get_percent(&cor.loss_corr, *argv)) {
	249	explain1("loss correllation");
	250	return -1;
	251	}
	252	}
	253	} else if (!strcmp(*argv, "state")) {
	254	double p13;
	255
	256	NEXT_ARG();
	257	if (parse_percent(&p13, *argv)) {
	258	explain1("loss p13");
	259	return -1;
	260	}
	261
	262	/* set defaults */
	263	set_percent(&gimodel.p13, p13);
	264	set_percent(&gimodel.p31, 1. - p13);
	265	set_percent(&gimodel.p32, 0);
	266	set_percent(&gimodel.p23, 1.);
8f9672af	267	set_percent(&gimodel.p14, 0);
3c7950af SH	268	loss_type = NETEM_LOSS_GI;
	269
	270	if (!NEXT_IS_NUMBER())
	271	continue;
	272	NEXT_ARG();
	273	if (get_percent(&gimodel.p31, *argv)) {
	274	explain1("loss p31");
	275	return -1;
	276	}
	277
	278	if (!NEXT_IS_NUMBER())
	279	continue;
	280	NEXT_ARG();
	281	if (get_percent(&gimodel.p32, *argv)) {
	282	explain1("loss p32");
	283	return -1;
	284	}
	285
	286	if (!NEXT_IS_NUMBER())
	287	continue;
	288	NEXT_ARG();
	289	if (get_percent(&gimodel.p23, *argv)) {
	290	explain1("loss p23");
	291	return -1;
	292	}
8f9672af JV	293	if (!NEXT_IS_NUMBER())
	294	continue;
	295	NEXT_ARG();
	296	if (get_percent(&gimodel.p14, *argv)) {
	297	explain1("loss p14");
	298	return -1;
	299	}
3c7950af SH	300
	301	} else if (!strcmp(*argv, "gemodel")) {
	302	NEXT_ARG();
	303	if (get_percent(&gemodel.p, *argv)) {
	304	explain1("loss gemodel p");
	305	return -1;
	306	}
	307
	308	/* set defaults */
	309	set_percent(&gemodel.r, 1.);
	310	set_percent(&gemodel.h, 0);
3757185b	311	set_percent(&gemodel.k1, 0);
3c7950af SH	312	loss_type = NETEM_LOSS_GE;
	313
	314	if (!NEXT_IS_NUMBER())
	315	continue;
	316	NEXT_ARG();
	317	if (get_percent(&gemodel.r, *argv)) {
	318	explain1("loss gemodel r");
	319	return -1;
	320	}
	321
	322	if (!NEXT_IS_NUMBER())
	323	continue;
	324	NEXT_ARG();
	325	if (get_percent(&gemodel.h, *argv)) {
	326	explain1("loss gemodel h");
	327	return -1;
	328	}
3757185b JV	329	/* netem option is "1-h" but kernel
	330	* expects "h".
	331	*/
	332	gemodel.h = max_percent_value - gemodel.h;
3c7950af SH	333
	334	if (!NEXT_IS_NUMBER())
	335	continue;
	336	NEXT_ARG();
	337	if (get_percent(&gemodel.k1, *argv)) {
	338	explain1("loss gemodel k");
b7be3d0c SH	339	return -1;
b7be3d0c SH	340	}
3c7950af SH	341	} else {
	342	fprintf(stderr, "Unknown loss parameter: %s\n",
	343	*argv);
	344	return -1;
b7be3d0c	345	}
1070205d VS	346	} else if (matches(*argv, "ecn") == 0) {
1070205d VS	347	present[TCA_NETEM_ECN] = 1;
ea8fc104 SH	348	} else if (matches(*argv, "reorder") == 0) {
ea8fc104 SH	349	NEXT_ARG();
40076f62	350	present[TCA_NETEM_REORDER] = 1;
ea8fc104 SH	351	if (get_percent(&reorder.probability, *argv)) {
	352	explain1("reorder");
	353	return -1;
	354	}
	355	if (NEXT_IS_NUMBER()) {
	356	NEXT_ARG();
40076f62	357	++present[TCA_NETEM_CORR];
ea8fc104 SH	358	if (get_percent(&reorder.correlation, *argv)) {
	359	explain1("reorder");
	360	return -1;
	361	}
	362	}
a31a5d59 SH	363	} else if (matches(*argv, "corrupt") == 0) {
a31a5d59 SH	364	NEXT_ARG();
40076f62	365	present[TCA_NETEM_CORRUPT] = 1;
a31a5d59 SH	366	if (get_percent(&corrupt.probability, *argv)) {
	367	explain1("corrupt");
	368	return -1;
	369	}
	370	if (NEXT_IS_NUMBER()) {
	371	NEXT_ARG();
40076f62	372	++present[TCA_NETEM_CORR];
a31a5d59 SH	373	if (get_percent(&corrupt.correlation, *argv)) {
	374	explain1("corrupt");
	375	return -1;
	376	}
	377	}
309a4c90	378	} else if (matches(*argv, "gap") == 0) {
309a4c90	379	NEXT_ARG();
2e21655e	380	if (get_u32(&opt.gap, *argv, 0)) {
309a4c90 SH	381	explain1("gap");
	382	return -1;
	383	}
ffb79d06	384	} else if (matches(*argv, "duplicate") == 0) {
309a4c90	385	NEXT_ARG();
2e21655e	386	if (get_percent(&opt.duplicate, *argv)) {
ffb79d06	387	explain1("duplicate");
309a4c90 SH	388	return -1;
309a4c90 SH	389	}
b7be3d0c SH	390	if (NEXT_IS_NUMBER()) {
b7be3d0c SH	391	NEXT_ARG();
2e21655e	392	if (get_percent(&cor.dup_corr, *argv)) {
b7be3d0c SH	393	explain1("duplicate");
	394	return -1;
	395	}
	396	}
	397	} else if (matches(*argv, "distribution") == 0) {
309a4c90	398	NEXT_ARG();
c1b81cb5 SH	399	dist_data = calloc(sizeof(dist_data[0]), MAX_DIST);
	400	dist_size = get_distribution(*argv, dist_data, MAX_DIST);
	401	if (dist_size <= 0) {
	402	free(dist_data);
309a4c90	403	return -1;
c1b81cb5	404	}
6b8dc4de HPP	405	} else if (matches(*argv, "rate") == 0) {
	406	++present[TCA_NETEM_RATE];
	407	NEXT_ARG();
dad2f72b	408	if (get_rate64(&rate64, *argv)) {
6b8dc4de HPP	409	explain1("rate");
	410	return -1;
	411	}
e72ca3fb	412	if (NEXT_IS_SIGNED_NUMBER()) {
6b8dc4de HPP	413	NEXT_ARG();
	414	if (get_s32(&rate.packet_overhead, *argv, 0)) {
	415	explain1("rate");
	416	return -1;
	417	}
	418	}
	419	if (NEXT_IS_NUMBER()) {
	420	NEXT_ARG();
	421	if (get_u32(&rate.cell_size, *argv, 0)) {
	422	explain1("rate");
	423	return -1;
	424	}
	425	}
e72ca3fb	426	if (NEXT_IS_SIGNED_NUMBER()) {
6b8dc4de HPP	427	NEXT_ARG();
	428	if (get_s32(&rate.cell_overhead, *argv, 0)) {
	429	explain1("rate");
	430	return -1;
	431	}
	432	}
309a4c90 SH	433	} else if (strcmp(*argv, "help") == 0) {
	434	explain();
	435	return -1;
	436	} else {
	437	fprintf(stderr, "What is \"%s\"?\n", *argv);
	438	explain();
	439	return -1;
	440	}
309a4c90 SH	441	}
309a4c90 SH	442
1a1d22a7	443	tail = NLMSG_TAIL(n);
025dc69a	444
ea8fc104 SH	445	if (reorder.probability) {
	446	if (opt.latency == 0) {
	447	fprintf(stderr, "reordering not possible without specifying some delay\n");
14a1c164 VS	448	explain();
14a1c164 VS	449	return -1;
ea8fc104 SH	450	}
	451	if (opt.gap == 0)
	452	opt.gap = 1;
	453	} else if (opt.gap > 0) {
	454	fprintf(stderr, "gap specified without reorder probability\n");
	455	explain();
	456	return -1;
	457	}
	458
1070205d VS	459	if (present[TCA_NETEM_ECN]) {
	460	if (opt.loss <= 0 && loss_type == NETEM_LOSS_UNSPEC) {
	461	fprintf(stderr, "ecn requested without loss model\n");
	462	explain();
	463	return -1;
	464	}
	465	}
	466
a31a5d59	467	if (dist_data && (opt.latency == 0 \|\| opt.jitter == 0)) {
ea8fc104 SH	468	fprintf(stderr, "distribution specified but no latency and jitter values\n");
	469	explain();
	470	return -1;
	471	}
	472
c1b81cb5	473	if (addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)) < 0)
a31a5d59	474	return -1;
2e21655e	475
40076f62	476	if (present[TCA_NETEM_CORR] &&
c1b81cb5	477	addattr_l(n, 1024, TCA_NETEM_CORR, &cor, sizeof(cor)) < 0)
a31a5d59	478	return -1;
a31a5d59	479
3c7950af	480	if (present[TCA_NETEM_REORDER] &&
c1b81cb5	481	addattr_l(n, 1024, TCA_NETEM_REORDER, &reorder, sizeof(reorder)) < 0)
e9bc3c40	482	return -1;
a31a5d59	483
1070205d VS	484	if (present[TCA_NETEM_ECN] &&
	485	addattr_l(n, 1024, TCA_NETEM_ECN, &present[TCA_NETEM_ECN],
	486	sizeof(present[TCA_NETEM_ECN])) < 0)
	487	return -1;
	488
40076f62	489	if (present[TCA_NETEM_CORRUPT] &&
c1b81cb5	490	addattr_l(n, 1024, TCA_NETEM_CORRUPT, &corrupt, sizeof(corrupt)) < 0)
40076f62	491	return -1;
a31a5d59	492
3c7950af SH	493	if (loss_type != NETEM_LOSS_UNSPEC) {
	494	struct rtattr *start;
	495
	496	start = addattr_nest(n, 1024, TCA_NETEM_LOSS \| NLA_F_NESTED);
	497	if (loss_type == NETEM_LOSS_GI) {
	498	if (addattr_l(n, 1024, NETEM_LOSS_GI,
	499	&gimodel, sizeof(gimodel)) < 0)
	500	return -1;
	501	} else if (loss_type == NETEM_LOSS_GE) {
	502	if (addattr_l(n, 1024, NETEM_LOSS_GE,
	503	&gemodel, sizeof(gemodel)) < 0)
	504	return -1;
	505	} else {
	506	fprintf(stderr, "loss in the weeds!\n");
	507	return -1;
	508	}
3d0b7439	509
3c7950af SH	510	addattr_nest_end(n, start);
	511	}
	512
dad2f72b YY	513	if (present[TCA_NETEM_RATE]) {
	514	if (rate64 >= (1ULL << 32)) {
	515	if (addattr_l(n, 1024,
	516	TCA_NETEM_RATE64, &rate64, sizeof(rate64)) < 0)
	517	return -1;
	518	rate.rate = ~0U;
	519	} else {
	520	rate.rate = rate64;
	521	}
	522	if (addattr_l(n, 1024, TCA_NETEM_RATE, &rate, sizeof(rate)) < 0)
	523	return -1;
	524	}
6b8dc4de	525
a31a5d59	526	if (dist_data) {
c1b81cb5 SH	527	if (addattr_l(n, MAX_DIST * sizeof(dist_data[0]),
	528	TCA_NETEM_DELAY_DIST,
	529	dist_data, dist_size * sizeof(dist_data[0])) < 0)
a31a5d59	530	return -1;
c1b81cb5	531	free(dist_data);
2e21655e	532	}
1a1d22a7	533	tail->rta_len = (void ) NLMSG_TAIL(n) - (void ) tail;
b7be3d0c	534	return 0;
309a4c90 SH	535	}
	536
	537	static int netem_print_opt(struct qdisc_util qu, FILE f, struct rtattr *opt)
	538	{
2e21655e	539	const struct tc_netem_corr *cor = NULL;
ea8fc104	540	const struct tc_netem_reorder *reorder = NULL;
a31a5d59	541	const struct tc_netem_corrupt *corrupt = NULL;
3c7950af SH	542	const struct tc_netem_gimodel *gimodel = NULL;
3c7950af SH	543	const struct tc_netem_gemodel *gemodel = NULL;
1070205d	544	int *ecn = NULL;
2e21655e	545	struct tc_netem_qopt qopt;
6b8dc4de	546	const struct tc_netem_rate *rate = NULL;
2e21655e	547	int len = RTA_PAYLOAD(opt) - sizeof(qopt);
dad2f72b	548	__u64 rate64 = 0;
32a121cb	549
309a4c90	550	SPRINT_BUF(b1);
309a4c90 SH	551
	552	if (opt == NULL)
	553	return 0;
	554
2e21655e SH	555	if (len < 0) {
2e21655e SH	556	fprintf(stderr, "options size error\n");
309a4c90	557	return -1;
b7be3d0c	558	}
2e21655e SH	559	memcpy(&qopt, RTA_DATA(opt), sizeof(qopt));
	560
	561	if (len > 0) {
1d2d1cb5	562	struct rtattr *tb[TCA_NETEM_MAX+1];
32a121cb	563
2e21655e SH	564	parse_rtattr(tb, TCA_NETEM_MAX, RTA_DATA(opt) + sizeof(qopt),
2e21655e SH	565	len);
ae665a52	566
2e21655e SH	567	if (tb[TCA_NETEM_CORR]) {
	568	if (RTA_PAYLOAD(tb[TCA_NETEM_CORR]) < sizeof(*cor))
	569	return -1;
	570	cor = RTA_DATA(tb[TCA_NETEM_CORR]);
	571	}
ea8fc104 SH	572	if (tb[TCA_NETEM_REORDER]) {
	573	if (RTA_PAYLOAD(tb[TCA_NETEM_REORDER]) < sizeof(*reorder))
	574	return -1;
	575	reorder = RTA_DATA(tb[TCA_NETEM_REORDER]);
	576	}
a31a5d59 SH	577	if (tb[TCA_NETEM_CORRUPT]) {
	578	if (RTA_PAYLOAD(tb[TCA_NETEM_CORRUPT]) < sizeof(*corrupt))
	579	return -1;
e9bc3c40	580	corrupt = RTA_DATA(tb[TCA_NETEM_CORRUPT]);
a31a5d59	581	}
3c7950af SH	582	if (tb[TCA_NETEM_LOSS]) {
	583	struct rtattr *lb[NETEM_LOSS_MAX + 1];
	584
	585	parse_rtattr_nested(lb, NETEM_LOSS_MAX, tb[TCA_NETEM_LOSS]);
	586	if (lb[NETEM_LOSS_GI])
8f9672af	587	gimodel = RTA_DATA(lb[NETEM_LOSS_GI]);
3c7950af SH	588	if (lb[NETEM_LOSS_GE])
3c7950af SH	589	gemodel = RTA_DATA(lb[NETEM_LOSS_GE]);
3d0b7439	590	}
6b8dc4de HPP	591	if (tb[TCA_NETEM_RATE]) {
	592	if (RTA_PAYLOAD(tb[TCA_NETEM_RATE]) < sizeof(*rate))
	593	return -1;
	594	rate = RTA_DATA(tb[TCA_NETEM_RATE]);
	595	}
1070205d VS	596	if (tb[TCA_NETEM_ECN]) {
	597	if (RTA_PAYLOAD(tb[TCA_NETEM_ECN]) < sizeof(*ecn))
	598	return -1;
	599	ecn = RTA_DATA(tb[TCA_NETEM_ECN]);
	600	}
dad2f72b YY	601	if (tb[TCA_NETEM_RATE64]) {
	602	if (RTA_PAYLOAD(tb[TCA_NETEM_RATE64]) < sizeof(rate64))
	603	return -1;
	604	rate64 = rta_getattr_u64(tb[TCA_NETEM_RATE64]);
	605	}
2e21655e	606	}
309a4c90	607
2e21655e	608	fprintf(f, "limit %d", qopt.limit);
31fa60e0	609
2e21655e SH	610	if (qopt.latency) {
2e21655e SH	611	fprintf(f, " delay %s", sprint_ticks(qopt.latency, b1));
b7be3d0c	612
2e21655e SH	613	if (qopt.jitter) {
	614	fprintf(f, " %s", sprint_ticks(qopt.jitter, b1));
	615	if (cor && cor->delay_corr)
	616	fprintf(f, " %s", sprint_percent(cor->delay_corr, b1));
b7be3d0c SH	617	}
	618	}
	619
2e21655e SH	620	if (qopt.loss) {
	621	fprintf(f, " loss %s", sprint_percent(qopt.loss, b1));
	622	if (cor && cor->loss_corr)
	623	fprintf(f, " %s", sprint_percent(cor->loss_corr, b1));
b7be3d0c SH	624	}
b7be3d0c SH	625
3c7950af SH	626	if (gimodel) {
	627	fprintf(f, " loss state p13 %s", sprint_percent(gimodel->p13, b1));
	628	fprintf(f, " p31 %s", sprint_percent(gimodel->p31, b1));
	629	fprintf(f, " p32 %s", sprint_percent(gimodel->p32, b1));
	630	fprintf(f, " p23 %s", sprint_percent(gimodel->p23, b1));
	631	fprintf(f, " p14 %s", sprint_percent(gimodel->p14, b1));
	632	}
	633
	634	if (gemodel) {
3757185b	635	fprintf(f, " loss gemodel p %s",
3c7950af SH	636	sprint_percent(gemodel->p, b1));
3c7950af SH	637	fprintf(f, " r %s", sprint_percent(gemodel->r, b1));
3757185b JV	638	fprintf(f, " 1-h %s", sprint_percent(max_percent_value -
3757185b JV	639	gemodel->h, b1));
3c7950af SH	640	fprintf(f, " 1-k %s", sprint_percent(gemodel->k1, b1));
	641	}
	642
2e21655e	643	if (qopt.duplicate) {
b7be3d0c	644	fprintf(f, " duplicate %s",
2e21655e SH	645	sprint_percent(qopt.duplicate, b1));
	646	if (cor && cor->dup_corr)
	647	fprintf(f, " %s", sprint_percent(cor->dup_corr, b1));
b7be3d0c	648	}
ae665a52	649
ea8fc104	650	if (reorder && reorder->probability) {
ae665a52	651	fprintf(f, " reorder %s",
ea8fc104 SH	652	sprint_percent(reorder->probability, b1));
ea8fc104 SH	653	if (reorder->correlation)
ae665a52	654	fprintf(f, " %s",
ea8fc104 SH	655	sprint_percent(reorder->correlation, b1));
ea8fc104 SH	656	}
b7be3d0c	657
a31a5d59	658	if (corrupt && corrupt->probability) {
ae665a52	659	fprintf(f, " corrupt %s",
a31a5d59 SH	660	sprint_percent(corrupt->probability, b1));
a31a5d59 SH	661	if (corrupt->correlation)
ae665a52	662	fprintf(f, " %s",
a31a5d59 SH	663	sprint_percent(corrupt->correlation, b1));
	664	}
	665
6b8dc4de	666	if (rate && rate->rate) {
dad2f72b YY	667	if (rate64)
	668	fprintf(f, " rate %s", sprint_rate(rate64, b1));
	669	else
	670	fprintf(f, " rate %s", sprint_rate(rate->rate, b1));
6b8dc4de HPP	671	if (rate->packet_overhead)
	672	fprintf(f, " packetoverhead %d", rate->packet_overhead);
	673	if (rate->cell_size)
	674	fprintf(f, " cellsize %u", rate->cell_size);
	675	if (rate->cell_overhead)
	676	fprintf(f, " celloverhead %d", rate->cell_overhead);
	677	}
	678
1070205d VS	679	if (ecn)
	680	fprintf(f, " ecn ");
	681
2e21655e SH	682	if (qopt.gap)
2e21655e SH	683	fprintf(f, " gap %lu", (unsigned long)qopt.gap);
309a4c90	684
1070205d	685
309a4c90 SH	686	return 0;
	687	}
	688
95812b56	689	struct qdisc_util netem_qdisc_util = {
32a121cb	690	.id = "netem",
31fa60e0 SH	691	.parse_qopt = netem_parse_opt,
31fa60e0 SH	692	.print_qopt = netem_print_opt,
309a4c90	693	};