[mirror_iproute2.git] / tc / q_gred.c

/*
 * q_gred.c		GRED.
 *
 *		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:    J Hadi Salim(hadi@nortelnetworks.com)
 *             code ruthlessly ripped from
 *	       Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
 *
 */

#include <stdio.h>
#include <stdlib.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 <math.h>

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

#include "tc_red.h"


#if 0
#define DPRINTF(format,args...) fprintf(stderr,format,##args)
#else
#define DPRINTF(format,args...)
#endif

static void explain(void)
{
	fprintf(stderr, "Usage: ... gred DP drop-probability limit BYTES "
	    "min BYTES max BYTES\n");
	fprintf(stderr, "    avpkt BYTES burst PACKETS probability PROBABILITY "
	    "bandwidth KBPS\n");
	fprintf(stderr, "    [prio value]\n");
	fprintf(stderr," OR ...\n");
	fprintf(stderr," gred setup DPs <num of DPs> default <default DP> "
	    "[grio]\n");
}

static int init_gred(struct qdisc_util *qu, int argc, char **argv,
		     struct nlmsghdr *n)
{

	struct rtattr *tail;
	struct tc_gred_sopt opt = { 0 };
	int dps = 0;
	int def_dp = -1;

	while (argc > 0) {
		DPRINTF(stderr,"init_gred: invoked with %s\n",*argv);
		if (strcmp(*argv, "DPs") == 0) {
			NEXT_ARG();
			DPRINTF(stderr,"init_gred: next_arg with %s\n",*argv);
			dps = strtol(*argv, (char **)NULL, 10);
			if (dps < 0 || dps >MAX_DPs) {
				fprintf(stderr, "DPs =%d\n", dps);
				fprintf(stderr, "Illegal \"DPs\"\n");
				fprintf(stderr, "GRED: only %d DPs are "
					"currently supported\n",MAX_DPs);
				return -1;
			}
		} else if (strcmp(*argv, "default") == 0) {
			NEXT_ARG();
			def_dp = strtol(*argv, (char **)NULL, 10);
			if (dps == 0) {
				fprintf(stderr, "\"default DP\" must be "
					"defined after DPs\n");
				return -1;
			}
			if (def_dp < 0 || def_dp > dps) {
				fprintf(stderr,
					"\"default DP\" must be less than %d\n",
					opt.DPs);
				return -1;
			}
		} else if (strcmp(*argv, "grio") == 0) {
			opt.grio = 1;
		} else if (strcmp(*argv, "help") == 0) {
			explain();
			return -1;
		} else {
			fprintf(stderr, "What is \"%s\"?\n", *argv);
			explain();
			return -1;
		}
		argc--; argv++;
	}

	if (!dps || def_dp == -1) {
		fprintf(stderr, "Illegal gred setup parameters \n");
		return -1;
	}

	opt.DPs = dps;
	opt.def_DP = def_dp;

	DPRINTF("TC_GRED: sending DPs=%d default=%d\n",opt.DPs,opt.def_DP);
	n->nlmsg_flags|=NLM_F_CREATE;
	tail = NLMSG_TAIL(n);
	addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
	addattr_l(n, 1024, TCA_GRED_DPS, &opt, sizeof(struct tc_gred_sopt));
	tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
	return 0;
}
/*
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
*/
static int gred_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
{
	int ok=0;
	struct tc_gred_qopt opt;
	unsigned burst = 0;
	unsigned avpkt = 0;
	double probability = 0.02;
	unsigned rate = 0;
	int wlog;
	__u8 sbuf[256];
	struct rtattr *tail;
	__u32 max_P;

	memset(&opt, 0, sizeof(opt));

	while (argc > 0) {
		if (strcmp(*argv, "limit") == 0) {
			NEXT_ARG();
			if (get_size(&opt.limit, *argv)) {
				fprintf(stderr, "Illegal \"limit\"\n");
				return -1;
			}
			ok++;
		} else if (strcmp(*argv, "setup") == 0) {
			if (ok) {
				fprintf(stderr, "Illegal \"setup\"\n");
				return -1;
			}
		return init_gred(qu,argc-1, argv+1,n);

		} else if (strcmp(*argv, "min") == 0) {
			NEXT_ARG();
			if (get_size(&opt.qth_min, *argv)) {
				fprintf(stderr, "Illegal \"min\"\n");
				return -1;
			}
			ok++;
		} else if (strcmp(*argv, "max") == 0) {
			NEXT_ARG();
			if (get_size(&opt.qth_max, *argv)) {
				fprintf(stderr, "Illegal \"max\"\n");
				return -1;
			}
			ok++;
		} else if (strcmp(*argv, "DP") == 0) {
			NEXT_ARG();
			opt.DP=strtol(*argv, (char **)NULL, 10);
			DPRINTF ("\n ******* DP =%u\n",opt.DP);
			if (opt.DP >MAX_DPs) { /* need a better error check */
				fprintf(stderr, "DP =%u \n",opt.DP);
				fprintf(stderr, "Illegal \"DP\"\n");
				fprintf(stderr, "GRED: only %d DPs are currently supported\n",MAX_DPs);
				return -1;
			}
			ok++;
		} else if (strcmp(*argv, "burst") == 0) {
			NEXT_ARG();
                        if (get_unsigned(&burst, *argv, 0)) {
				fprintf(stderr, "Illegal \"burst\"\n");
				return -1;
			}
			ok++;
		} else if (strcmp(*argv, "avpkt") == 0) {
			NEXT_ARG();
			if (get_size(&avpkt, *argv)) {
				fprintf(stderr, "Illegal \"avpkt\"\n");
				return -1;
			}
			ok++;
		} else if (strcmp(*argv, "probability") == 0) {
			NEXT_ARG();
			if (sscanf(*argv, "%lg", &probability) != 1) {
				fprintf(stderr, "Illegal \"probability\"\n");
				return -1;
			}
			ok++;
		} else if (strcmp(*argv, "prio") == 0) {
			NEXT_ARG();
			opt.prio=strtol(*argv, (char **)NULL, 10);
			/* some error check here */
			ok++;
		} else if (strcmp(*argv, "bandwidth") == 0) {
			NEXT_ARG();
			if (get_rate(&rate, *argv)) {
				fprintf(stderr, "Illegal \"bandwidth\"\n");
				return -1;
			}
			ok++;
		} else if (strcmp(*argv, "help") == 0) {
			explain();
			return -1;
		} else {
			fprintf(stderr, "What is \"%s\"?\n", *argv);
			explain();
			return -1;
		}
		argc--; argv++;
	}

	if (rate == 0)
		get_rate(&rate, "10Mbit");

	if (!opt.qth_min || !opt.qth_max || !opt.limit || !avpkt ||
	    (opt.DP<0)) {
		fprintf(stderr, "Required parameter (min, max, limit, "
		    "avpkt, DP) is missing\n");
		return -1;
	}
	if (!burst) {
		burst = (2 * opt.qth_min + opt.qth_max) / (3 * avpkt);
		fprintf(stderr, "GRED: set burst to %u\n", burst);
	}

	if ((wlog = tc_red_eval_ewma(opt.qth_min, burst, avpkt)) < 0) {
		fprintf(stderr, "GRED: failed to calculate EWMA constant.\n");
		return -1;
	}
	if (wlog >= 10)
		fprintf(stderr, "GRED: WARNING. Burst %d seems to be too "
		    "large.\n", burst);
	opt.Wlog = wlog;
	if ((wlog = tc_red_eval_P(opt.qth_min, opt.qth_max, probability)) < 0) {
		fprintf(stderr, "GRED: failed to calculate probability.\n");
		return -1;
	}
	opt.Plog = wlog;
	if ((wlog = tc_red_eval_idle_damping(opt.Wlog, avpkt, rate, sbuf)) < 0)
	    {
		fprintf(stderr, "GRED: failed to calculate idle damping "
		    "table.\n");
		return -1;
	}
	opt.Scell_log = wlog;

	tail = NLMSG_TAIL(n);
	addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
	addattr_l(n, 1024, TCA_GRED_PARMS, &opt, sizeof(opt));
	addattr_l(n, 1024, TCA_GRED_STAB, sbuf, 256);
	max_P = probability * pow(2, 32);
	addattr32(n, 1024, TCA_GRED_MAX_P, max_P);
	tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
	return 0;
}

static int gred_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
{
	struct rtattr *tb[TCA_GRED_MAX + 1];
	struct tc_gred_qopt *qopt;
	__u32 *max_p = NULL;
	int i;
	SPRINT_BUF(b1);
	SPRINT_BUF(b2);
	SPRINT_BUF(b3);
	SPRINT_BUF(b4);
	SPRINT_BUF(b5);

	if (opt == NULL)
		return 0;

	parse_rtattr_nested(tb, TCA_GRED_MAX, opt);

	if (tb[TCA_GRED_PARMS] == NULL)
		return -1;

	if (tb[TCA_GRED_MAX_P] &&
	    RTA_PAYLOAD(tb[TCA_GRED_MAX_P]) >= sizeof(__u32) * MAX_DPs)
		max_p = RTA_DATA(tb[TCA_GRED_MAX_P]);

	qopt = RTA_DATA(tb[TCA_GRED_PARMS]);
	if (RTA_PAYLOAD(tb[TCA_GRED_PARMS])  < sizeof(*qopt)*MAX_DPs) {
		fprintf(f,"\n GRED received message smaller than expected\n");
		return -1;
		}

/* Bad hack! should really return a proper message as shown above*/

	for (i=0;i<MAX_DPs;i++, qopt++) {
		if (qopt->DP >= MAX_DPs) continue;
		fprintf(f, "\n DP:%d (prio %d) Average Queue %s Measured "
		    "Queue %s  ",
			qopt->DP,
			qopt->prio,
			sprint_size(qopt->qave, b4),
			sprint_size(qopt->backlog, b5));
		fprintf(f, "\n\t Packet drops: %d (forced %d early %d)  ",
			qopt->forced+qopt->early,
			qopt->forced,
			qopt->early);
		fprintf(f, "\n\t Packet totals: %u (bytes %u)  ",
			qopt->packets,
			qopt->bytesin);
		if (show_details)
			fprintf(f, "\n limit %s min %s max %s ",
				sprint_size(qopt->limit, b1),
				sprint_size(qopt->qth_min, b2),
				sprint_size(qopt->qth_max, b3));
		fprintf(f, "ewma %u ", qopt->Wlog);
		if (max_p)
			fprintf(f, "probability %lg ", max_p[i] / pow(2, 32));
		else
			fprintf(f, "Plog %u ", qopt->Plog);
		fprintf(f, "Scell_log %u", qopt->Scell_log);
	}
	return 0;
}

struct qdisc_util gred_qdisc_util = {
	.id		= "gred",
	.parse_qopt	= gred_parse_opt,
	.print_qopt	= gred_print_opt,
};
Commit	Line	Data
aba5acdf SH	1	/*
	2	* q_gred.c GRED.
	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	*
ae665a52 SH	9	* Authors: J Hadi Salim(hadi@nortelnetworks.com)
	10	* code ruthlessly ripped from
	11	* Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
aba5acdf SH	12	*
	13	*/
	14
	15	#include <stdio.h>
	16	#include <stdlib.h>
	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>
1b6f0bb5	24	#include <math.h>
aba5acdf SH	25
	26	#include "utils.h"
	27	#include "tc_util.h"
	28
	29	#include "tc_red.h"
	30
	31
	32	#if 0
	33	#define DPRINTF(format,args...) fprintf(stderr,format,##args)
	34	#else
	35	#define DPRINTF(format,args...)
	36	#endif
	37
	38	static void explain(void)
	39	{
	40	fprintf(stderr, "Usage: ... gred DP drop-probability limit BYTES "
	41	"min BYTES max BYTES\n");
	42	fprintf(stderr, " avpkt BYTES burst PACKETS probability PROBABILITY "
	43	"bandwidth KBPS\n");
	44	fprintf(stderr, " [prio value]\n");
	45	fprintf(stderr," OR ...\n");
	46	fprintf(stderr," gred setup DPs <num of DPs> default <default DP> "
	47	"[grio]\n");
	48	}
	49
3d0b7439	50	static int init_gred(struct qdisc_util qu, int argc, char *argv,
ebde8780	51	struct nlmsghdr *n)
aba5acdf SH	52	{
	53
	54	struct rtattr *tail;
cb4bd0ec	55	struct tc_gred_sopt opt = { 0 };
ebde8780 SH	56	int dps = 0;
ebde8780 SH	57	int def_dp = -1;
aba5acdf SH	58
	59	while (argc > 0) {
	60	DPRINTF(stderr,"init_gred: invoked with %s\n",*argv);
	61	if (strcmp(*argv, "DPs") == 0) {
	62	NEXT_ARG();
	63	DPRINTF(stderr,"init_gred: next_arg with %s\n",*argv);
ebde8780 SH	64	dps = strtol(argv, (char *)NULL, 10);
	65	if (dps < 0 \|\| dps >MAX_DPs) {
	66	fprintf(stderr, "DPs =%d\n", dps);
aba5acdf SH	67	fprintf(stderr, "Illegal \"DPs\"\n");
aba5acdf SH	68	fprintf(stderr, "GRED: only %d DPs are "
ebde8780	69	"currently supported\n",MAX_DPs);
aba5acdf SH	70	return -1;
	71	}
	72	} else if (strcmp(*argv, "default") == 0) {
	73	NEXT_ARG();
ebde8780	74	def_dp = strtol(argv, (char *)NULL, 10);
1558971d	75	if (dps == 0) {
aba5acdf	76	fprintf(stderr, "\"default DP\" must be "
ebde8780	77	"defined after DPs\n");
aba5acdf SH	78	return -1;
aba5acdf SH	79	}
ebde8780	80	if (def_dp < 0 \|\| def_dp > dps) {
3d0b7439	81	fprintf(stderr,
ebde8780 SH	82	"\"default DP\" must be less than %d\n",
ebde8780 SH	83	opt.DPs);
aba5acdf SH	84	return -1;
	85	}
	86	} else if (strcmp(*argv, "grio") == 0) {
cb4bd0ec	87	opt.grio = 1;
aba5acdf SH	88	} else if (strcmp(*argv, "help") == 0) {
	89	explain();
	90	return -1;
	91	} else {
	92	fprintf(stderr, "What is \"%s\"?\n", *argv);
	93	explain();
	94	return -1;
	95	}
	96	argc--; argv++;
ebde8780	97	}
aba5acdf	98
ebde8780 SH	99	if (!dps \|\| def_dp == -1) {
	100	fprintf(stderr, "Illegal gred setup parameters \n");
	101	return -1;
	102	}
	103
ebde8780 SH	104	opt.DPs = dps;
	105	opt.def_DP = def_dp;
	106
	107	DPRINTF("TC_GRED: sending DPs=%d default=%d\n",opt.DPs,opt.def_DP);
aba5acdf	108	n->nlmsg_flags\|=NLM_F_CREATE;
228569c3	109	tail = NLMSG_TAIL(n);
aba5acdf SH	110	addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
aba5acdf SH	111	addattr_l(n, 1024, TCA_GRED_DPS, &opt, sizeof(struct tc_gred_sopt));
228569c3	112	tail->rta_len = (void ) NLMSG_TAIL(n) - (void ) tail;
ebde8780	113	return 0;
aba5acdf SH	114	}
	115	/*
	116	^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
	117	*/
	118	static int gred_parse_opt(struct qdisc_util qu, int argc, char argv, struct nlmsghdr n)
	119	{
	120	int ok=0;
	121	struct tc_gred_qopt opt;
	122	unsigned burst = 0;
	123	unsigned avpkt = 0;
	124	double probability = 0.02;
	125	unsigned rate = 0;
	126	int wlog;
	127	__u8 sbuf[256];
	128	struct rtattr *tail;
1b6f0bb5	129	__u32 max_P;
aba5acdf SH	130
	131	memset(&opt, 0, sizeof(opt));
	132
	133	while (argc > 0) {
	134	if (strcmp(*argv, "limit") == 0) {
	135	NEXT_ARG();
	136	if (get_size(&opt.limit, *argv)) {
	137	fprintf(stderr, "Illegal \"limit\"\n");
	138	return -1;
	139	}
	140	ok++;
	141	} else if (strcmp(*argv, "setup") == 0) {
	142	if (ok) {
	143	fprintf(stderr, "Illegal \"setup\"\n");
	144	return -1;
	145	}
	146	return init_gred(qu,argc-1, argv+1,n);
ae665a52	147
aba5acdf SH	148	} else if (strcmp(*argv, "min") == 0) {
	149	NEXT_ARG();
	150	if (get_size(&opt.qth_min, *argv)) {
	151	fprintf(stderr, "Illegal \"min\"\n");
	152	return -1;
	153	}
	154	ok++;
	155	} else if (strcmp(*argv, "max") == 0) {
	156	NEXT_ARG();
	157	if (get_size(&opt.qth_max, *argv)) {
	158	fprintf(stderr, "Illegal \"max\"\n");
	159	return -1;
	160	}
	161	ok++;
	162	} else if (strcmp(*argv, "DP") == 0) {
	163	NEXT_ARG();
	164	opt.DP=strtol(argv, (char *)NULL, 10);
	165	DPRINTF ("\n ******* DP =%u\n",opt.DP);
	166	if (opt.DP >MAX_DPs) { /* need a better error check */
	167	fprintf(stderr, "DP =%u \n",opt.DP);
	168	fprintf(stderr, "Illegal \"DP\"\n");
	169	fprintf(stderr, "GRED: only %d DPs are currently supported\n",MAX_DPs);
	170	return -1;
	171	}
aba5acdf SH	172	ok++;
	173	} else if (strcmp(*argv, "burst") == 0) {
	174	NEXT_ARG();
	175	if (get_unsigned(&burst, *argv, 0)) {
	176	fprintf(stderr, "Illegal \"burst\"\n");
	177	return -1;
	178	}
	179	ok++;
	180	} else if (strcmp(*argv, "avpkt") == 0) {
	181	NEXT_ARG();
	182	if (get_size(&avpkt, *argv)) {
	183	fprintf(stderr, "Illegal \"avpkt\"\n");
	184	return -1;
	185	}
	186	ok++;
	187	} else if (strcmp(*argv, "probability") == 0) {
	188	NEXT_ARG();
	189	if (sscanf(*argv, "%lg", &probability) != 1) {
	190	fprintf(stderr, "Illegal \"probability\"\n");
	191	return -1;
	192	}
	193	ok++;
	194	} else if (strcmp(*argv, "prio") == 0) {
	195	NEXT_ARG();
	196	opt.prio=strtol(argv, (char *)NULL, 10);
	197	/* some error check here */
	198	ok++;
	199	} else if (strcmp(*argv, "bandwidth") == 0) {
	200	NEXT_ARG();
	201	if (get_rate(&rate, *argv)) {
	202	fprintf(stderr, "Illegal \"bandwidth\"\n");
	203	return -1;
	204	}
	205	ok++;
	206	} else if (strcmp(*argv, "help") == 0) {
	207	explain();
	208	return -1;
	209	} else {
	210	fprintf(stderr, "What is \"%s\"?\n", *argv);
	211	explain();
	212	return -1;
	213	}
	214	argc--; argv++;
	215	}
	216
aba5acdf SH	217	if (rate == 0)
	218	get_rate(&rate, "10Mbit");
	219
ab15aeac	220	if (!opt.qth_min \|\| !opt.qth_max \|\| !opt.limit \|\| !avpkt \|\|
aba5acdf	221	(opt.DP<0)) {
ab15aeac	222	fprintf(stderr, "Required parameter (min, max, limit, "
ddf216c8	223	"avpkt, DP) is missing\n");
aba5acdf SH	224	return -1;
aba5acdf SH	225	}
ab15aeac ED	226	if (!burst) {
	227	burst = (2 * opt.qth_min + opt.qth_max) / (3 * avpkt);
	228	fprintf(stderr, "GRED: set burst to %u\n", burst);
	229	}
aba5acdf SH	230
	231	if ((wlog = tc_red_eval_ewma(opt.qth_min, burst, avpkt)) < 0) {
	232	fprintf(stderr, "GRED: failed to calculate EWMA constant.\n");
	233	return -1;
	234	}
	235	if (wlog >= 10)
ab15aeac	236	fprintf(stderr, "GRED: WARNING. Burst %d seems to be too "
aba5acdf SH	237	"large.\n", burst);
	238	opt.Wlog = wlog;
	239	if ((wlog = tc_red_eval_P(opt.qth_min, opt.qth_max, probability)) < 0) {
	240	fprintf(stderr, "GRED: failed to calculate probability.\n");
	241	return -1;
	242	}
	243	opt.Plog = wlog;
	244	if ((wlog = tc_red_eval_idle_damping(opt.Wlog, avpkt, rate, sbuf)) < 0)
	245	{
	246	fprintf(stderr, "GRED: failed to calculate idle damping "
	247	"table.\n");
	248	return -1;
	249	}
	250	opt.Scell_log = wlog;
	251
228569c3	252	tail = NLMSG_TAIL(n);
aba5acdf SH	253	addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
	254	addattr_l(n, 1024, TCA_GRED_PARMS, &opt, sizeof(opt));
	255	addattr_l(n, 1024, TCA_GRED_STAB, sbuf, 256);
1b6f0bb5 ED	256	max_P = probability * pow(2, 32);
1b6f0bb5 ED	257	addattr32(n, 1024, TCA_GRED_MAX_P, max_P);
228569c3	258	tail->rta_len = (void ) NLMSG_TAIL(n) - (void ) tail;
aba5acdf SH	259	return 0;
	260	}
	261
	262	static int gred_print_opt(struct qdisc_util qu, FILE f, struct rtattr *opt)
	263	{
1b6f0bb5	264	struct rtattr *tb[TCA_GRED_MAX + 1];
aba5acdf	265	struct tc_gred_qopt *qopt;
1b6f0bb5	266	__u32 *max_p = NULL;
aba5acdf SH	267	int i;
	268	SPRINT_BUF(b1);
	269	SPRINT_BUF(b2);
	270	SPRINT_BUF(b3);
	271	SPRINT_BUF(b4);
	272	SPRINT_BUF(b5);
	273
	274	if (opt == NULL)
	275	return 0;
	276
1b6f0bb5	277	parse_rtattr_nested(tb, TCA_GRED_MAX, opt);
aba5acdf SH	278
	279	if (tb[TCA_GRED_PARMS] == NULL)
	280	return -1;
a5a6f1e8	281
1b6f0bb5 ED	282	if (tb[TCA_GRED_MAX_P] &&
	283	RTA_PAYLOAD(tb[TCA_GRED_MAX_P]) >= sizeof(__u32) * MAX_DPs)
	284	max_p = RTA_DATA(tb[TCA_GRED_MAX_P]);
	285
aba5acdf SH	286	qopt = RTA_DATA(tb[TCA_GRED_PARMS]);
	287	if (RTA_PAYLOAD(tb[TCA_GRED_PARMS]) < sizeof(qopt)MAX_DPs) {
	288	fprintf(f,"\n GRED received message smaller than expected\n");
	289	return -1;
	290	}
ae665a52	291
aba5acdf SH	292	/* Bad hack! should really return a proper message as shown above*/
	293
	294	for (i=0;i<MAX_DPs;i++, qopt++) {
	295	if (qopt->DP >= MAX_DPs) continue;
	296	fprintf(f, "\n DP:%d (prio %d) Average Queue %s Measured "
	297	"Queue %s ",
	298	qopt->DP,
	299	qopt->prio,
	300	sprint_size(qopt->qave, b4),
	301	sprint_size(qopt->backlog, b5));
	302	fprintf(f, "\n\t Packet drops: %d (forced %d early %d) ",
	303	qopt->forced+qopt->early,
	304	qopt->forced,
	305	qopt->early);
	306	fprintf(f, "\n\t Packet totals: %u (bytes %u) ",
	307	qopt->packets,
	308	qopt->bytesin);
	309	if (show_details)
	310	fprintf(f, "\n limit %s min %s max %s ",
	311	sprint_size(qopt->limit, b1),
	312	sprint_size(qopt->qth_min, b2),
	313	sprint_size(qopt->qth_max, b3));
1b6f0bb5 ED	314	fprintf(f, "ewma %u ", qopt->Wlog);
	315	if (max_p)
	316	fprintf(f, "probability %lg ", max_p[i] / pow(2, 32));
	317	else
	318	fprintf(f, "Plog %u ", qopt->Plog);
	319	fprintf(f, "Scell_log %u", qopt->Scell_log);
aba5acdf SH	320	}
	321	return 0;
	322	}
	323
95812b56	324	struct qdisc_util gred_qdisc_util = {
f2f99e2e SH	325	.id = "gred",
	326	.parse_qopt = gred_parse_opt,
	327	.print_qopt = gred_print_opt,
aba5acdf	328	};