[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 <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);
}

/* 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. * 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)
{
	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 (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;
	__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 SH	17	#include <unistd.h>
	18	#include <syslog.h>
	19	#include <fcntl.h>
e4beb527	20	#include <stdint.h>
309a4c90 SH	21	#include <sys/socket.h>
	22	#include <netinet/in.h>
	23	#include <arpa/inet.h>
	24	#include <string.h>
b7be3d0c	25	#include <errno.h>
309a4c90 SH	26
	27	#include "utils.h"
	28	#include "tc_util.h"
b7be3d0c	29	#include "tc_common.h"
309a4c90 SH	30
	31	static void explain(void)
	32	{
ae665a52	33	fprintf(stderr,
32a121cb	34	"Usage: ... netem [ limit PACKETS ]\n" \
ea8fc104 SH	35	" [ delay TIME [ JITTER [CORRELATION]]]\n" \
ea8fc104 SH	36	" [ distribution {uniform\|normal\|pareto\|paretonormal} ]\n" \
32a121cb	37	" [ corrupt PERCENT [CORRELATION]]\n" \
b7be3d0c	38	" [ duplicate PERCENT [CORRELATION]]\n" \
3c7950af SH	39	" [ loss random PERCENT [CORRELATION]]\n" \
	40	" [ loss state P13 [P31 [P32 [P23 P14]]]\n" \
	41	" [ loss gemodel PERCENT [R [1-H [1-K]]]\n" \
1070205d	42	" [ ecn ]\n" \
6b8dc4de HPP	43	" [ reorder PRECENT [CORRELATION] [ gap DISTANCE ]]\n" \
6b8dc4de HPP	44	" [ rate RATE [PACKETOVERHEAD] [CELLSIZE] [CELLOVERHEAD]]\n");
309a4c90 SH	45	}
	46
	47	static void explain1(const char *arg)
	48	{
	49	fprintf(stderr, "Illegal \"%s\"\n", arg);
	50	}
	51
3c7950af	52	/* Upper bound on size of distribution
c1b81cb5 SH	53	* really (TCA_BUF_MAX - other headers) / sizeof (__s16)
	54	*/
	55	#define MAX_DIST (16*1024)
	56
3c7950af SH	57	/* scaled value used to percent of maximum. */
	58	static void set_percent(__u32 *percent, double per)
	59	{
e4beb527	60	percent = rint(per UINT32_MAX);
3c7950af SH	61	}
3c7950af SH	62
3c7950af SH	63	/* Parse either a fraction '.3' or percent '30%
	64	* return: 0 = ok, -1 = error, 1 = out of range
	65	*/
	66	static int parse_percent(double val, const char str)
	67	{
	68	char *p;
	69
	70	*val = strtod(str, &p) / 100.;
32a121cb	71	if (*p && strcmp(p, "%"))
3c7950af SH	72	return -1;
	73
	74	return 0;
	75	}
	76
	77	static int get_percent(__u32 percent, const char str)
	78	{
	79	double per;
	80
	81	if (parse_percent(&per, str))
	82	return -1;
	83
	84	set_percent(percent, per);
	85	return 0;
	86	}
	87
d1f28cf1	88	static void print_percent(char *buf, int len, __u32 per)
3c7950af	89	{
e4beb527	90	snprintf(buf, len, "%g%%", (100. * per) / UINT32_MAX);
3c7950af SH	91	}
3c7950af SH	92
32a121cb	93	static char sprint_percent(__u32 per, char buf)
3c7950af SH	94	{
	95	print_percent(buf, SPRINT_BSIZE-1, per);
	96	return buf;
	97	}
	98
2e21655e SH	99	/*
	100	* Simplistic file parser for distrbution data.
	101	* Format is:
	102	* # comment line(s)
c1b81cb5	103	* data0 data1 ...
2e21655e	104	*/
c1b81cb5	105	static int get_distribution(const char type, __s16 data, int maxdata)
b7be3d0c SH	106	{
	107	FILE *f;
	108	int n;
2e21655e SH	109	long x;
2e21655e SH	110	size_t len;
fb9b1d0f	111	char *line = NULL;
2e21655e	112	char name[128];
b7be3d0c	113
aa27f88c	114	snprintf(name, sizeof(name), "%s/%s.dist", get_tc_lib(), type);
2e21655e	115	if ((f = fopen(name, "r")) == NULL) {
ae665a52	116	fprintf(stderr, "No distribution data for %s (%s: %s)\n",
2e21655e	117	type, name, strerror(errno));
b7be3d0c SH	118	return -1;
b7be3d0c SH	119	}
ae665a52	120
b7be3d0c	121	n = 0;
2e21655e SH	122	while (getline(&line, &len, f) != -1) {
2e21655e SH	123	char p, endp;
32a121cb	124
2e21655e	125	if (line == '\n' \|\| line == '#')
b7be3d0c SH	126	continue;
b7be3d0c SH	127
2e21655e SH	128	for (p = line; ; p = endp) {
2e21655e SH	129	x = strtol(p, &endp, 0);
ae665a52	130	if (endp == p)
2e21655e SH	131	break;
2e21655e SH	132
c1b81cb5	133	if (n >= maxdata) {
2e21655e SH	134	fprintf(stderr, "%s: too much data\n",
	135	name);
	136	n = -1;
	137	goto error;
	138	}
b7be3d0c SH	139	data[n++] = x;
	140	}
	141	}
2e21655e SH	142	error:
2e21655e SH	143	free(line);
b7be3d0c	144	fclose(f);
b7be3d0c SH	145	return n;
	146	}
	147
3c7950af	148	#define NEXT_IS_NUMBER() (NEXT_ARG_OK() && isdigit(argv[1][0]))
e72ca3fb JN	149	#define NEXT_IS_SIGNED_NUMBER() \
e72ca3fb JN	150	(NEXT_ARG_OK() && (isdigit(argv[1][0]) \|\| argv[1][0] == '-'))
b7be3d0c	151
ae665a52	152	/* Adjust for the fact that psched_ticks aren't always usecs
b7be3d0c SH	153	(based on kernel PSCHED_CLOCK configuration */
	154	static int get_ticks(__u32 ticks, const char str)
	155	{
32a121cb	156	unsigned int t;
b7be3d0c	157
32a121cb	158	if (get_time(&t, str))
b7be3d0c	159	return -1;
ae665a52	160
8f34caaf PM	161	if (tc_core_time2big(t)) {
8f34caaf PM	162	fprintf(stderr, "Illegal %u time (too large)\n", t);
fa565130 SH	163	return -1;
	164	}
	165
8f34caaf	166	*ticks = tc_core_time2tick(t);
b7be3d0c SH	167	return 0;
	168	}
	169
ae665a52	170	static int netem_parse_opt(struct qdisc_util qu, int argc, char *argv,
309a4c90 SH	171	struct nlmsghdr *n)
309a4c90 SH	172	{
fcbd0165	173	int dist_size = 0;
2e21655e	174	struct rtattr *tail;
3c7950af	175	struct tc_netem_qopt opt = { .limit = 1000 };
d17b136f PS	176	struct tc_netem_corr cor = {};
	177	struct tc_netem_reorder reorder = {};
	178	struct tc_netem_corrupt corrupt = {};
3c7950af SH	179	struct tc_netem_gimodel gimodel;
3c7950af SH	180	struct tc_netem_gemodel gemodel;
d17b136f	181	struct tc_netem_rate rate = {};
a31a5d59	182	__s16 *dist_data = NULL;
3c7950af	183	__u16 loss_type = NETEM_LOSS_UNSPEC;
d17b136f	184	int present[__TCA_NETEM_MAX] = {};
dad2f72b	185	__u64 rate64 = 0;
309a4c90	186
32a121cb	187	for ( ; argc > 0; --argc, ++argv) {
309a4c90 SH	188	if (matches(*argv, "limit") == 0) {
309a4c90 SH	189	NEXT_ARG();
2e21655e	190	if (get_size(&opt.limit, *argv)) {
309a4c90 SH	191	explain1("limit");
	192	return -1;
	193	}
b7be3d0c SH	194	} else if (matches(*argv, "latency") == 0 \|\|
b7be3d0c SH	195	matches(*argv, "delay") == 0) {
309a4c90	196	NEXT_ARG();
2e21655e	197	if (get_ticks(&opt.latency, *argv)) {
309a4c90 SH	198	explain1("latency");
	199	return -1;
	200	}
b7be3d0c SH	201
	202	if (NEXT_IS_NUMBER()) {
	203	NEXT_ARG();
2e21655e	204	if (get_ticks(&opt.jitter, *argv)) {
b7be3d0c SH	205	explain1("latency");
	206	return -1;
	207	}
	208
	209	if (NEXT_IS_NUMBER()) {
	210	NEXT_ARG();
40076f62	211	++present[TCA_NETEM_CORR];
3c7950af	212	if (get_percent(&cor.delay_corr, *argv)) {
b7be3d0c SH	213	explain1("latency");
	214	return -1;
	215	}
	216	}
	217	}
	218	} else if (matches(*argv, "loss") == 0 \|\|
	219	matches(*argv, "drop") == 0) {
3c7950af SH	220	if (opt.loss > 0 \|\| loss_type != NETEM_LOSS_UNSPEC) {
3c7950af SH	221	explain1("duplicate loss argument\n");
309a4c90 SH	222	return -1;
309a4c90 SH	223	}
3c7950af SH	224
	225	NEXT_ARG();
	226	/* Old (deprecated) random loss model syntax */
	227	if (isdigit(argv[0][0]))
	228	goto random_loss_model;
	229
	230	if (!strcmp(*argv, "random")) {
b7be3d0c	231	NEXT_ARG();
268a9eee	232	random_loss_model:
3c7950af SH	233	if (get_percent(&opt.loss, *argv)) {
	234	explain1("loss percent");
	235	return -1;
	236	}
	237	if (NEXT_IS_NUMBER()) {
	238	NEXT_ARG();
	239	++present[TCA_NETEM_CORR];
	240	if (get_percent(&cor.loss_corr, *argv)) {
	241	explain1("loss correllation");
	242	return -1;
	243	}
	244	}
	245	} else if (!strcmp(*argv, "state")) {
	246	double p13;
	247
	248	NEXT_ARG();
	249	if (parse_percent(&p13, *argv)) {
	250	explain1("loss p13");
	251	return -1;
	252	}
	253
	254	/* set defaults */
	255	set_percent(&gimodel.p13, p13);
	256	set_percent(&gimodel.p31, 1. - p13);
	257	set_percent(&gimodel.p32, 0);
	258	set_percent(&gimodel.p23, 1.);
8f9672af	259	set_percent(&gimodel.p14, 0);
3c7950af SH	260	loss_type = NETEM_LOSS_GI;
	261
	262	if (!NEXT_IS_NUMBER())
	263	continue;
	264	NEXT_ARG();
	265	if (get_percent(&gimodel.p31, *argv)) {
	266	explain1("loss p31");
	267	return -1;
	268	}
	269
	270	if (!NEXT_IS_NUMBER())
	271	continue;
	272	NEXT_ARG();
	273	if (get_percent(&gimodel.p32, *argv)) {
	274	explain1("loss p32");
	275	return -1;
	276	}
	277
	278	if (!NEXT_IS_NUMBER())
	279	continue;
	280	NEXT_ARG();
	281	if (get_percent(&gimodel.p23, *argv)) {
	282	explain1("loss p23");
	283	return -1;
	284	}
8f9672af JV	285	if (!NEXT_IS_NUMBER())
	286	continue;
	287	NEXT_ARG();
	288	if (get_percent(&gimodel.p14, *argv)) {
	289	explain1("loss p14");
	290	return -1;
	291	}
3c7950af SH	292
	293	} else if (!strcmp(*argv, "gemodel")) {
	294	NEXT_ARG();
	295	if (get_percent(&gemodel.p, *argv)) {
	296	explain1("loss gemodel p");
	297	return -1;
	298	}
	299
	300	/* set defaults */
	301	set_percent(&gemodel.r, 1.);
	302	set_percent(&gemodel.h, 0);
3757185b	303	set_percent(&gemodel.k1, 0);
3c7950af SH	304	loss_type = NETEM_LOSS_GE;
	305
	306	if (!NEXT_IS_NUMBER())
	307	continue;
	308	NEXT_ARG();
	309	if (get_percent(&gemodel.r, *argv)) {
	310	explain1("loss gemodel r");
	311	return -1;
	312	}
	313
	314	if (!NEXT_IS_NUMBER())
	315	continue;
	316	NEXT_ARG();
	317	if (get_percent(&gemodel.h, *argv)) {
	318	explain1("loss gemodel h");
	319	return -1;
	320	}
3757185b JV	321	/* netem option is "1-h" but kernel
	322	* expects "h".
	323	*/
e4beb527	324	gemodel.h = UINT32_MAX - gemodel.h;
3c7950af SH	325
	326	if (!NEXT_IS_NUMBER())
	327	continue;
	328	NEXT_ARG();
	329	if (get_percent(&gemodel.k1, *argv)) {
	330	explain1("loss gemodel k");
b7be3d0c SH	331	return -1;
b7be3d0c SH	332	}
3c7950af SH	333	} else {
	334	fprintf(stderr, "Unknown loss parameter: %s\n",
	335	*argv);
	336	return -1;
b7be3d0c	337	}
1070205d	338	} else if (matches(*argv, "ecn") == 0) {
268a9eee	339	present[TCA_NETEM_ECN] = 1;
ea8fc104 SH	340	} else if (matches(*argv, "reorder") == 0) {
ea8fc104 SH	341	NEXT_ARG();
40076f62	342	present[TCA_NETEM_REORDER] = 1;
ea8fc104 SH	343	if (get_percent(&reorder.probability, *argv)) {
	344	explain1("reorder");
	345	return -1;
	346	}
	347	if (NEXT_IS_NUMBER()) {
	348	NEXT_ARG();
40076f62	349	++present[TCA_NETEM_CORR];
ea8fc104 SH	350	if (get_percent(&reorder.correlation, *argv)) {
	351	explain1("reorder");
	352	return -1;
	353	}
	354	}
a31a5d59 SH	355	} else if (matches(*argv, "corrupt") == 0) {
a31a5d59 SH	356	NEXT_ARG();
40076f62	357	present[TCA_NETEM_CORRUPT] = 1;
a31a5d59 SH	358	if (get_percent(&corrupt.probability, *argv)) {
	359	explain1("corrupt");
	360	return -1;
	361	}
	362	if (NEXT_IS_NUMBER()) {
	363	NEXT_ARG();
40076f62	364	++present[TCA_NETEM_CORR];
a31a5d59 SH	365	if (get_percent(&corrupt.correlation, *argv)) {
	366	explain1("corrupt");
	367	return -1;
	368	}
	369	}
309a4c90	370	} else if (matches(*argv, "gap") == 0) {
309a4c90	371	NEXT_ARG();
2e21655e	372	if (get_u32(&opt.gap, *argv, 0)) {
309a4c90 SH	373	explain1("gap");
	374	return -1;
	375	}
ffb79d06	376	} else if (matches(*argv, "duplicate") == 0) {
309a4c90	377	NEXT_ARG();
2e21655e	378	if (get_percent(&opt.duplicate, *argv)) {
ffb79d06	379	explain1("duplicate");
309a4c90 SH	380	return -1;
309a4c90 SH	381	}
b7be3d0c SH	382	if (NEXT_IS_NUMBER()) {
b7be3d0c SH	383	NEXT_ARG();
2e21655e	384	if (get_percent(&cor.dup_corr, *argv)) {
b7be3d0c SH	385	explain1("duplicate");
	386	return -1;
	387	}
	388	}
	389	} else if (matches(*argv, "distribution") == 0) {
309a4c90	390	NEXT_ARG();
c1b81cb5 SH	391	dist_data = calloc(sizeof(dist_data[0]), MAX_DIST);
	392	dist_size = get_distribution(*argv, dist_data, MAX_DIST);
	393	if (dist_size <= 0) {
	394	free(dist_data);
309a4c90	395	return -1;
c1b81cb5	396	}
6b8dc4de HPP	397	} else if (matches(*argv, "rate") == 0) {
	398	++present[TCA_NETEM_RATE];
	399	NEXT_ARG();
dad2f72b	400	if (get_rate64(&rate64, *argv)) {
6b8dc4de HPP	401	explain1("rate");
	402	return -1;
	403	}
e72ca3fb	404	if (NEXT_IS_SIGNED_NUMBER()) {
6b8dc4de HPP	405	NEXT_ARG();
	406	if (get_s32(&rate.packet_overhead, *argv, 0)) {
	407	explain1("rate");
	408	return -1;
	409	}
	410	}
	411	if (NEXT_IS_NUMBER()) {
	412	NEXT_ARG();
	413	if (get_u32(&rate.cell_size, *argv, 0)) {
	414	explain1("rate");
	415	return -1;
	416	}
	417	}
e72ca3fb	418	if (NEXT_IS_SIGNED_NUMBER()) {
6b8dc4de HPP	419	NEXT_ARG();
	420	if (get_s32(&rate.cell_overhead, *argv, 0)) {
	421	explain1("rate");
	422	return -1;
	423	}
	424	}
309a4c90 SH	425	} else if (strcmp(*argv, "help") == 0) {
	426	explain();
	427	return -1;
	428	} else {
	429	fprintf(stderr, "What is \"%s\"?\n", *argv);
	430	explain();
	431	return -1;
	432	}
309a4c90 SH	433	}
309a4c90 SH	434
1a1d22a7	435	tail = NLMSG_TAIL(n);
025dc69a	436
ea8fc104 SH	437	if (reorder.probability) {
	438	if (opt.latency == 0) {
	439	fprintf(stderr, "reordering not possible without specifying some delay\n");
14a1c164 VS	440	explain();
14a1c164 VS	441	return -1;
ea8fc104 SH	442	}
	443	if (opt.gap == 0)
	444	opt.gap = 1;
	445	} else if (opt.gap > 0) {
	446	fprintf(stderr, "gap specified without reorder probability\n");
	447	explain();
	448	return -1;
	449	}
	450
1070205d VS	451	if (present[TCA_NETEM_ECN]) {
	452	if (opt.loss <= 0 && loss_type == NETEM_LOSS_UNSPEC) {
	453	fprintf(stderr, "ecn requested without loss model\n");
	454	explain();
	455	return -1;
	456	}
	457	}
	458
a31a5d59	459	if (dist_data && (opt.latency == 0 \|\| opt.jitter == 0)) {
ea8fc104 SH	460	fprintf(stderr, "distribution specified but no latency and jitter values\n");
	461	explain();
	462	return -1;
	463	}
	464
c1b81cb5	465	if (addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)) < 0)
a31a5d59	466	return -1;
2e21655e	467
40076f62	468	if (present[TCA_NETEM_CORR] &&
c1b81cb5	469	addattr_l(n, 1024, TCA_NETEM_CORR, &cor, sizeof(cor)) < 0)
268a9eee	470	return -1;
a31a5d59	471
3c7950af	472	if (present[TCA_NETEM_REORDER] &&
c1b81cb5	473	addattr_l(n, 1024, TCA_NETEM_REORDER, &reorder, sizeof(reorder)) < 0)
e9bc3c40	474	return -1;
a31a5d59	475
1070205d VS	476	if (present[TCA_NETEM_ECN] &&
	477	addattr_l(n, 1024, TCA_NETEM_ECN, &present[TCA_NETEM_ECN],
	478	sizeof(present[TCA_NETEM_ECN])) < 0)
268a9eee	479	return -1;
1070205d	480
40076f62	481	if (present[TCA_NETEM_CORRUPT] &&
c1b81cb5	482	addattr_l(n, 1024, TCA_NETEM_CORRUPT, &corrupt, sizeof(corrupt)) < 0)
40076f62	483	return -1;
a31a5d59	484
3c7950af SH	485	if (loss_type != NETEM_LOSS_UNSPEC) {
	486	struct rtattr *start;
	487
	488	start = addattr_nest(n, 1024, TCA_NETEM_LOSS \| NLA_F_NESTED);
	489	if (loss_type == NETEM_LOSS_GI) {
	490	if (addattr_l(n, 1024, NETEM_LOSS_GI,
	491	&gimodel, sizeof(gimodel)) < 0)
268a9eee	492	return -1;
3c7950af SH	493	} else if (loss_type == NETEM_LOSS_GE) {
	494	if (addattr_l(n, 1024, NETEM_LOSS_GE,
	495	&gemodel, sizeof(gemodel)) < 0)
268a9eee	496	return -1;
3c7950af SH	497	} else {
	498	fprintf(stderr, "loss in the weeds!\n");
	499	return -1;
	500	}
3d0b7439	501
3c7950af SH	502	addattr_nest_end(n, start);
	503	}
	504
dad2f72b YY	505	if (present[TCA_NETEM_RATE]) {
	506	if (rate64 >= (1ULL << 32)) {
	507	if (addattr_l(n, 1024,
	508	TCA_NETEM_RATE64, &rate64, sizeof(rate64)) < 0)
	509	return -1;
	510	rate.rate = ~0U;
	511	} else {
	512	rate.rate = rate64;
	513	}
	514	if (addattr_l(n, 1024, TCA_NETEM_RATE, &rate, sizeof(rate)) < 0)
	515	return -1;
	516	}
6b8dc4de	517
a31a5d59	518	if (dist_data) {
c1b81cb5 SH	519	if (addattr_l(n, MAX_DIST * sizeof(dist_data[0]),
	520	TCA_NETEM_DELAY_DIST,
	521	dist_data, dist_size * sizeof(dist_data[0])) < 0)
a31a5d59	522	return -1;
c1b81cb5	523	free(dist_data);
2e21655e	524	}
1a1d22a7	525	tail->rta_len = (void ) NLMSG_TAIL(n) - (void ) tail;
b7be3d0c	526	return 0;
309a4c90 SH	527	}
	528
	529	static int netem_print_opt(struct qdisc_util qu, FILE f, struct rtattr *opt)
	530	{
2e21655e	531	const struct tc_netem_corr *cor = NULL;
ea8fc104	532	const struct tc_netem_reorder *reorder = NULL;
a31a5d59	533	const struct tc_netem_corrupt *corrupt = NULL;
3c7950af SH	534	const struct tc_netem_gimodel *gimodel = NULL;
3c7950af SH	535	const struct tc_netem_gemodel *gemodel = NULL;
1070205d	536	int *ecn = NULL;
2e21655e	537	struct tc_netem_qopt qopt;
6b8dc4de	538	const struct tc_netem_rate *rate = NULL;
a754de3c	539	int len;
dad2f72b	540	__u64 rate64 = 0;
32a121cb	541
309a4c90	542	SPRINT_BUF(b1);
309a4c90 SH	543
	544	if (opt == NULL)
	545	return 0;
	546
a754de3c	547	len = RTA_PAYLOAD(opt) - sizeof(qopt);
2e21655e SH	548	if (len < 0) {
2e21655e SH	549	fprintf(stderr, "options size error\n");
309a4c90	550	return -1;
b7be3d0c	551	}
2e21655e SH	552	memcpy(&qopt, RTA_DATA(opt), sizeof(qopt));
	553
	554	if (len > 0) {
1d2d1cb5	555	struct rtattr *tb[TCA_NETEM_MAX+1];
32a121cb	556
2e21655e SH	557	parse_rtattr(tb, TCA_NETEM_MAX, RTA_DATA(opt) + sizeof(qopt),
2e21655e SH	558	len);
ae665a52	559
2e21655e SH	560	if (tb[TCA_NETEM_CORR]) {
	561	if (RTA_PAYLOAD(tb[TCA_NETEM_CORR]) < sizeof(*cor))
	562	return -1;
	563	cor = RTA_DATA(tb[TCA_NETEM_CORR]);
	564	}
ea8fc104 SH	565	if (tb[TCA_NETEM_REORDER]) {
	566	if (RTA_PAYLOAD(tb[TCA_NETEM_REORDER]) < sizeof(*reorder))
	567	return -1;
	568	reorder = RTA_DATA(tb[TCA_NETEM_REORDER]);
	569	}
a31a5d59 SH	570	if (tb[TCA_NETEM_CORRUPT]) {
	571	if (RTA_PAYLOAD(tb[TCA_NETEM_CORRUPT]) < sizeof(*corrupt))
	572	return -1;
e9bc3c40	573	corrupt = RTA_DATA(tb[TCA_NETEM_CORRUPT]);
a31a5d59	574	}
3c7950af SH	575	if (tb[TCA_NETEM_LOSS]) {
	576	struct rtattr *lb[NETEM_LOSS_MAX + 1];
	577
	578	parse_rtattr_nested(lb, NETEM_LOSS_MAX, tb[TCA_NETEM_LOSS]);
	579	if (lb[NETEM_LOSS_GI])
8f9672af	580	gimodel = RTA_DATA(lb[NETEM_LOSS_GI]);
3c7950af SH	581	if (lb[NETEM_LOSS_GE])
3c7950af SH	582	gemodel = RTA_DATA(lb[NETEM_LOSS_GE]);
3d0b7439	583	}
6b8dc4de HPP	584	if (tb[TCA_NETEM_RATE]) {
	585	if (RTA_PAYLOAD(tb[TCA_NETEM_RATE]) < sizeof(*rate))
	586	return -1;
	587	rate = RTA_DATA(tb[TCA_NETEM_RATE]);
	588	}
1070205d VS	589	if (tb[TCA_NETEM_ECN]) {
	590	if (RTA_PAYLOAD(tb[TCA_NETEM_ECN]) < sizeof(*ecn))
	591	return -1;
	592	ecn = RTA_DATA(tb[TCA_NETEM_ECN]);
	593	}
dad2f72b YY	594	if (tb[TCA_NETEM_RATE64]) {
	595	if (RTA_PAYLOAD(tb[TCA_NETEM_RATE64]) < sizeof(rate64))
	596	return -1;
	597	rate64 = rta_getattr_u64(tb[TCA_NETEM_RATE64]);
	598	}
2e21655e	599	}
309a4c90	600
2e21655e	601	fprintf(f, "limit %d", qopt.limit);
31fa60e0	602
2e21655e SH	603	if (qopt.latency) {
2e21655e SH	604	fprintf(f, " delay %s", sprint_ticks(qopt.latency, b1));
b7be3d0c	605
2e21655e SH	606	if (qopt.jitter) {
	607	fprintf(f, " %s", sprint_ticks(qopt.jitter, b1));
	608	if (cor && cor->delay_corr)
	609	fprintf(f, " %s", sprint_percent(cor->delay_corr, b1));
b7be3d0c SH	610	}
	611	}
	612
2e21655e SH	613	if (qopt.loss) {
	614	fprintf(f, " loss %s", sprint_percent(qopt.loss, b1));
	615	if (cor && cor->loss_corr)
	616	fprintf(f, " %s", sprint_percent(cor->loss_corr, b1));
b7be3d0c SH	617	}
b7be3d0c SH	618
3c7950af SH	619	if (gimodel) {
	620	fprintf(f, " loss state p13 %s", sprint_percent(gimodel->p13, b1));
	621	fprintf(f, " p31 %s", sprint_percent(gimodel->p31, b1));
	622	fprintf(f, " p32 %s", sprint_percent(gimodel->p32, b1));
	623	fprintf(f, " p23 %s", sprint_percent(gimodel->p23, b1));
	624	fprintf(f, " p14 %s", sprint_percent(gimodel->p14, b1));
	625	}
	626
	627	if (gemodel) {
3757185b	628	fprintf(f, " loss gemodel p %s",
3c7950af SH	629	sprint_percent(gemodel->p, b1));
3c7950af SH	630	fprintf(f, " r %s", sprint_percent(gemodel->r, b1));
e4beb527	631	fprintf(f, " 1-h %s", sprint_percent(UINT32_MAX -
3757185b	632	gemodel->h, b1));
3c7950af SH	633	fprintf(f, " 1-k %s", sprint_percent(gemodel->k1, b1));
	634	}
	635
2e21655e	636	if (qopt.duplicate) {
b7be3d0c	637	fprintf(f, " duplicate %s",
2e21655e SH	638	sprint_percent(qopt.duplicate, b1));
	639	if (cor && cor->dup_corr)
	640	fprintf(f, " %s", sprint_percent(cor->dup_corr, b1));
b7be3d0c	641	}
ae665a52	642
ea8fc104	643	if (reorder && reorder->probability) {
ae665a52	644	fprintf(f, " reorder %s",
ea8fc104 SH	645	sprint_percent(reorder->probability, b1));
ea8fc104 SH	646	if (reorder->correlation)
ae665a52	647	fprintf(f, " %s",
ea8fc104 SH	648	sprint_percent(reorder->correlation, b1));
ea8fc104 SH	649	}
b7be3d0c	650
a31a5d59	651	if (corrupt && corrupt->probability) {
ae665a52	652	fprintf(f, " corrupt %s",
a31a5d59 SH	653	sprint_percent(corrupt->probability, b1));
a31a5d59 SH	654	if (corrupt->correlation)
ae665a52	655	fprintf(f, " %s",
a31a5d59 SH	656	sprint_percent(corrupt->correlation, b1));
	657	}
	658
6b8dc4de	659	if (rate && rate->rate) {
dad2f72b YY	660	if (rate64)
	661	fprintf(f, " rate %s", sprint_rate(rate64, b1));
	662	else
	663	fprintf(f, " rate %s", sprint_rate(rate->rate, b1));
6b8dc4de HPP	664	if (rate->packet_overhead)
	665	fprintf(f, " packetoverhead %d", rate->packet_overhead);
	666	if (rate->cell_size)
	667	fprintf(f, " cellsize %u", rate->cell_size);
	668	if (rate->cell_overhead)
	669	fprintf(f, " celloverhead %d", rate->cell_overhead);
	670	}
	671
1070205d VS	672	if (ecn)
	673	fprintf(f, " ecn ");
	674
2e21655e SH	675	if (qopt.gap)
2e21655e SH	676	fprintf(f, " gap %lu", (unsigned long)qopt.gap);
309a4c90	677
1070205d	678
309a4c90 SH	679	return 0;
	680	}
	681
95812b56	682	struct qdisc_util netem_qdisc_util = {
32a121cb	683	.id = "netem",
31fa60e0 SH	684	.parse_qopt = netem_parse_opt,
31fa60e0 SH	685	.print_qopt = netem_print_opt,
309a4c90	686	};