[mirror_iproute2.git] / tc / q_drr.c

/*
 * q_drr.c		DRR.
 *
 *		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:	Patrick McHardy <kaber@trash.net>
 *
 */

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

static void explain(void)
{
	fprintf(stderr, "Usage: ... drr\n");
}

static void explain2(void)
{
	fprintf(stderr, "Usage: ... drr quantum SIZE\n");
}


static int drr_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
{
	while (argc) {
		if (strcmp(*argv, "help") == 0) {
			explain();
			return -1;
		} else {
			fprintf(stderr, "What is \"%s\"?\n", *argv);
			explain();
			return -1;
		}
	}
	return 0;
}

static int drr_parse_class_opt(struct qdisc_util *qu, int argc, char **argv,
			       struct nlmsghdr *n)
{
	struct rtattr *tail;
	__u32 tmp;

	tail = NLMSG_TAIL(n);
	addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);

	while (argc > 0) {
		if (strcmp(*argv, "quantum") == 0) {
			NEXT_ARG();
			if (get_size(&tmp, *argv)) {
				fprintf(stderr, "Illegal \"quantum\"\n");
				return -1;
			}
			addattr_l(n, 1024, TCA_DRR_QUANTUM, &tmp, sizeof(tmp));
		} else if (strcmp(*argv, "help") == 0) {
			explain2();
			return -1;
		} else {
			fprintf(stderr, "What is \"%s\"?\n", *argv);
			explain2();
			return -1;
		}
		argc--; argv++;
	}

	tail->rta_len = (void *) NLMSG_TAIL(n) - (void *)tail;
	return 0;
}

static int drr_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
{
	struct rtattr *tb[TCA_DRR_MAX + 1];

	SPRINT_BUF(b1);

	if (opt == NULL)
		return 0;

	parse_rtattr_nested(tb, TCA_DRR_MAX, opt);

	if (tb[TCA_DRR_QUANTUM])
		fprintf(f, "quantum %s ",
			sprint_size(rta_getattr_u32(tb[TCA_DRR_QUANTUM]), b1));
	return 0;
}

static int drr_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats)
{
	struct tc_drr_stats *x;

	SPRINT_BUF(b1);

	if (xstats == NULL)
		return 0;
	if (RTA_PAYLOAD(xstats) < sizeof(*x))
		return -1;
	x = RTA_DATA(xstats);

	fprintf(f, " deficit %s ", sprint_size(x->deficit, b1));
	return 0;
}

struct qdisc_util drr_qdisc_util = {
	.id		= "drr",
	.parse_qopt	= drr_parse_opt,
	.print_qopt	= drr_print_opt,
	.print_xstats	= drr_print_xstats,
	.parse_copt	= drr_parse_class_opt,
	.print_copt	= drr_print_opt,
};
Commit	Line	Data
c86f3494 PM	1	/*
	2	* q_drr.c DRR.
	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	*
	9	* Authors: Patrick McHardy <kaber@trash.net>
	10	*
	11	*/
	12
	13	#include <stdio.h>
	14	#include <stdlib.h>
	15	#include <unistd.h>
	16	#include <syslog.h>
	17	#include <fcntl.h>
	18	#include <sys/socket.h>
	19	#include <netinet/in.h>
	20	#include <arpa/inet.h>
	21	#include <string.h>
	22
	23	#include "utils.h"
	24	#include "tc_util.h"
	25
	26	static void explain(void)
	27	{
	28	fprintf(stderr, "Usage: ... drr\n");
	29	}
	30
	31	static void explain2(void)
	32	{
	33	fprintf(stderr, "Usage: ... drr quantum SIZE\n");
	34	}
	35
c86f3494 PM	36
	37	static int drr_parse_opt(struct qdisc_util qu, int argc, char argv, struct nlmsghdr n)
	38	{
5582c0cf	39	while (argc) {
c86f3494 PM	40	if (strcmp(*argv, "help") == 0) {
	41	explain();
	42	return -1;
	43	} else {
	44	fprintf(stderr, "What is \"%s\"?\n", *argv);
	45	explain();
	46	return -1;
	47	}
c86f3494 PM	48	}
	49	return 0;
	50	}
	51
	52	static int drr_parse_class_opt(struct qdisc_util qu, int argc, char *argv,
	53	struct nlmsghdr *n)
	54	{
	55	struct rtattr *tail;
	56	__u32 tmp;
	57
	58	tail = NLMSG_TAIL(n);
	59	addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
	60
	61	while (argc > 0) {
	62	if (strcmp(*argv, "quantum") == 0) {
	63	NEXT_ARG();
	64	if (get_size(&tmp, *argv)) {
	65	fprintf(stderr, "Illegal \"quantum\"\n");
	66	return -1;
	67	}
	68	addattr_l(n, 1024, TCA_DRR_QUANTUM, &tmp, sizeof(tmp));
	69	} else if (strcmp(*argv, "help") == 0) {
	70	explain2();
	71	return -1;
	72	} else {
	73	fprintf(stderr, "What is \"%s\"?\n", *argv);
	74	explain2();
	75	return -1;
	76	}
	77	argc--; argv++;
	78	}
	79
	80	tail->rta_len = (void ) NLMSG_TAIL(n) - (void )tail;
	81	return 0;
	82	}
	83
	84	static int drr_print_opt(struct qdisc_util qu, FILE f, struct rtattr *opt)
	85	{
	86	struct rtattr *tb[TCA_DRR_MAX + 1];
32a121cb	87
c86f3494 PM	88	SPRINT_BUF(b1);
	89
	90	if (opt == NULL)
	91	return 0;
	92
	93	parse_rtattr_nested(tb, TCA_DRR_MAX, opt);
	94
	95	if (tb[TCA_DRR_QUANTUM])
	96	fprintf(f, "quantum %s ",
ff24746c	97	sprint_size(rta_getattr_u32(tb[TCA_DRR_QUANTUM]), b1));
c86f3494 PM	98	return 0;
	99	}
	100
	101	static int drr_print_xstats(struct qdisc_util qu, FILE f, struct rtattr *xstats)
	102	{
	103	struct tc_drr_stats *x;
32a121cb	104
c86f3494 PM	105	SPRINT_BUF(b1);
	106
	107	if (xstats == NULL)
	108	return 0;
	109	if (RTA_PAYLOAD(xstats) < sizeof(*x))
	110	return -1;
	111	x = RTA_DATA(xstats);
	112
	113	fprintf(f, " deficit %s ", sprint_size(x->deficit, b1));
	114	return 0;
	115	}
	116
	117	struct qdisc_util drr_qdisc_util = {
	118	.id = "drr",
	119	.parse_qopt = drr_parse_opt,
	120	.print_qopt = drr_print_opt,
	121	.print_xstats = drr_print_xstats,
	122	.parse_copt = drr_parse_class_opt,
	123	.print_copt = drr_print_opt,
	124	};