[mirror_iproute2.git] / tc / tc_filter.c

/*
 * tc_filter.c		"tc filter".
 *
 *		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:	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 <linux/if_ether.h>

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

static void usage(void);

static void usage(void)
{
	fprintf(stderr, "Usage: tc filter [ add | del | change | replace | show ] dev STRING\n");
	fprintf(stderr, "       [ pref PRIO ] protocol PROTO\n");
	fprintf(stderr, "       [ estimator INTERVAL TIME_CONSTANT ]\n");
	fprintf(stderr, "       [ root | classid CLASSID ] [ handle FILTERID ]\n");
	fprintf(stderr, "       [ [ FILTER_TYPE ] [ help | OPTIONS ] ]\n");
	fprintf(stderr, "\n");
	fprintf(stderr, "       tc filter show [ dev STRING ] [ root | parent CLASSID ]\n");
	fprintf(stderr, "Where:\n");
	fprintf(stderr, "FILTER_TYPE := { rsvp | u32 | bpf | fw | route | etc. }\n");
	fprintf(stderr, "FILTERID := ... format depends on classifier, see there\n");
	fprintf(stderr, "OPTIONS := ... try tc filter add <desired FILTER_KIND> help\n");
	return;
}


static int tc_filter_modify(int cmd, unsigned flags, int argc, char **argv)
{
	struct {
		struct nlmsghdr 	n;
		struct tcmsg 		t;
		char   			buf[MAX_MSG];
	} req;
	struct filter_util *q = NULL;
	__u32 prio = 0;
	__u32 protocol = 0;
	int protocol_set = 0;
	char *fhandle = NULL;
	char  d[16];
	char  k[16];
	struct tc_estimator est;

	memset(&req, 0, sizeof(req));
	memset(&est, 0, sizeof(est));
	memset(d, 0, sizeof(d));
	memset(k, 0, sizeof(k));
	memset(&req, 0, sizeof(req));

	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg));
	req.n.nlmsg_flags = NLM_F_REQUEST|flags;
	req.n.nlmsg_type = cmd;
	req.t.tcm_family = AF_UNSPEC;

	if (cmd == RTM_NEWTFILTER && flags & NLM_F_CREATE)
		protocol = htons(ETH_P_ALL);

	while (argc > 0) {
		if (strcmp(*argv, "dev") == 0) {
			NEXT_ARG();
			if (d[0])
				duparg("dev", *argv);
			strncpy(d, *argv, sizeof(d)-1);
		} else if (strcmp(*argv, "root") == 0) {
			if (req.t.tcm_parent) {
				fprintf(stderr, "Error: \"root\" is duplicate parent ID\n");
				return -1;
			}
			req.t.tcm_parent = TC_H_ROOT;
		} else if (strcmp(*argv, "parent") == 0) {
			__u32 handle;
			NEXT_ARG();
			if (req.t.tcm_parent)
				duparg("parent", *argv);
			if (get_tc_classid(&handle, *argv))
				invarg("Invalid parent ID", *argv);
			req.t.tcm_parent = handle;
		} else if (strcmp(*argv, "handle") == 0) {
			NEXT_ARG();
			if (fhandle)
				duparg("handle", *argv);
			fhandle = *argv;
		} else if (matches(*argv, "preference") == 0 ||
			   matches(*argv, "priority") == 0) {
			NEXT_ARG();
			if (prio)
				duparg("priority", *argv);
			if (get_u32(&prio, *argv, 0) || prio > 0xFFFF)
				invarg("invalid priority value", *argv);
		} else if (matches(*argv, "protocol") == 0) {
			__u16 id;
			NEXT_ARG();
			if (protocol_set)
				duparg("protocol", *argv);
			if (ll_proto_a2n(&id, *argv))
				invarg("invalid protocol", *argv);
			protocol = id;
			protocol_set = 1;
		} else if (matches(*argv, "estimator") == 0) {
			if (parse_estimator(&argc, &argv, &est) < 0)
				return -1;
		} else if (matches(*argv, "help") == 0) {
			usage();
			return 0;
		} else {
			strncpy(k, *argv, sizeof(k)-1);

			q = get_filter_kind(k);
			argc--; argv++;
			break;
		}

		argc--; argv++;
	}

	req.t.tcm_info = TC_H_MAKE(prio<<16, protocol);

	if (k[0])
		addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1);

	if (q) {
		if (q->parse_fopt(q, fhandle, argc, argv, &req.n))
			return 1;
	} else {
		if (fhandle) {
			fprintf(stderr, "Must specify filter type when using "
				"\"handle\"\n");
			return -1;
		}
		if (argc) {
			if (matches(*argv, "help") == 0)
				usage();
			fprintf(stderr, "Garbage instead of arguments \"%s ...\". Try \"tc filter help\".\n", *argv);
			return -1;
		}
	}
	if (est.ewma_log)
		addattr_l(&req.n, sizeof(req), TCA_RATE, &est, sizeof(est));


	if (d[0])  {
		ll_init_map(&rth);

		if ((req.t.tcm_ifindex = ll_name_to_index(d)) == 0) {
			fprintf(stderr, "Cannot find device \"%s\"\n", d);
			return 1;
		}
	}

	if (rtnl_talk(&rth, &req.n, NULL, 0) < 0) {
		fprintf(stderr, "We have an error talking to the kernel\n");
		return 2;
	}

	return 0;
}

static __u32 filter_parent;
static int filter_ifindex;
static __u32 filter_prio;
static __u32 filter_protocol;
__u16 f_proto = 0;

int print_filter(const struct sockaddr_nl *who,
			struct nlmsghdr *n,
			void *arg)
{
	FILE *fp = (FILE*)arg;
	struct tcmsg *t = NLMSG_DATA(n);
	int len = n->nlmsg_len;
	struct rtattr * tb[TCA_MAX+1];
	struct filter_util *q;
	char abuf[256];

	if (n->nlmsg_type != RTM_NEWTFILTER && n->nlmsg_type != RTM_DELTFILTER) {
		fprintf(stderr, "Not a filter\n");
		return 0;
	}
	len -= NLMSG_LENGTH(sizeof(*t));
	if (len < 0) {
		fprintf(stderr, "Wrong len %d\n", len);
		return -1;
	}

	memset(tb, 0, sizeof(tb));
	parse_rtattr(tb, TCA_MAX, TCA_RTA(t), len);

	if (tb[TCA_KIND] == NULL) {
		fprintf(stderr, "print_filter: NULL kind\n");
		return -1;
	}

	if (n->nlmsg_type == RTM_DELTFILTER)
		fprintf(fp, "deleted ");

	fprintf(fp, "filter ");
	if (!filter_ifindex || filter_ifindex != t->tcm_ifindex)
		fprintf(fp, "dev %s ", ll_index_to_name(t->tcm_ifindex));

	if (!filter_parent || filter_parent != t->tcm_parent) {
		if (t->tcm_parent == TC_H_ROOT)
			fprintf(fp, "root ");
		else {
			print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
			fprintf(fp, "parent %s ", abuf);
		}
	}
	if (t->tcm_info) {
		f_proto = TC_H_MIN(t->tcm_info);
		__u32 prio = TC_H_MAJ(t->tcm_info)>>16;
		if (!filter_protocol || filter_protocol != f_proto) {
			if (f_proto) {
				SPRINT_BUF(b1);
				fprintf(fp, "protocol %s ",
					ll_proto_n2a(f_proto, b1, sizeof(b1)));
			}
		}
		if (!filter_prio || filter_prio != prio) {
			if (prio)
				fprintf(fp, "pref %u ", prio);
		}
	}
	fprintf(fp, "%s ", rta_getattr_str(tb[TCA_KIND]));
	q = get_filter_kind(RTA_DATA(tb[TCA_KIND]));
	if (tb[TCA_OPTIONS]) {
		if (q)
			q->print_fopt(q, fp, tb[TCA_OPTIONS], t->tcm_handle);
		else
			fprintf(fp, "[cannot parse parameters]");
	}
	fprintf(fp, "\n");

	if (show_stats && (tb[TCA_STATS] || tb[TCA_STATS2])) {
		print_tcstats_attr(fp, tb, " ", NULL);
		fprintf(fp, "\n");
	}

	fflush(fp);
	return 0;
}


static int tc_filter_list(int argc, char **argv)
{
	struct tcmsg t;
	char d[16];
	__u32 prio = 0;
	__u32 protocol = 0;
	char *fhandle = NULL;

	memset(&t, 0, sizeof(t));
	t.tcm_family = AF_UNSPEC;
	memset(d, 0, sizeof(d));

	while (argc > 0) {
		if (strcmp(*argv, "dev") == 0) {
			NEXT_ARG();
			if (d[0])
				duparg("dev", *argv);
			strncpy(d, *argv, sizeof(d)-1);
		} else if (strcmp(*argv, "root") == 0) {
			if (t.tcm_parent) {
				fprintf(stderr, "Error: \"root\" is duplicate parent ID\n");
				return -1;
			}
			filter_parent = t.tcm_parent = TC_H_ROOT;
		} else if (strcmp(*argv, "parent") == 0) {
			__u32 handle;
			NEXT_ARG();
			if (t.tcm_parent)
				duparg("parent", *argv);
			if (get_tc_classid(&handle, *argv))
				invarg("invalid parent ID", *argv);
			filter_parent = t.tcm_parent = handle;
		} else if (strcmp(*argv, "handle") == 0) {
			NEXT_ARG();
			if (fhandle)
				duparg("handle", *argv);
			fhandle = *argv;
		} else if (matches(*argv, "preference") == 0 ||
			   matches(*argv, "priority") == 0) {
			NEXT_ARG();
			if (prio)
				duparg("priority", *argv);
			if (get_u32(&prio, *argv, 0))
				invarg("invalid preference", *argv);
			filter_prio = prio;
		} else if (matches(*argv, "protocol") == 0) {
			__u16 res;
			NEXT_ARG();
			if (protocol)
				duparg("protocol", *argv);
			if (ll_proto_a2n(&res, *argv))
				invarg("invalid protocol", *argv);
			protocol = res;
			filter_protocol = protocol;
		} else if (matches(*argv, "help") == 0) {
			usage();
		} else {
			fprintf(stderr, " What is \"%s\"? Try \"tc filter help\"\n", *argv);
			return -1;
		}

		argc--; argv++;
	}

	t.tcm_info = TC_H_MAKE(prio<<16, protocol);

	ll_init_map(&rth);

	if (d[0]) {
		if ((t.tcm_ifindex = ll_name_to_index(d)) == 0) {
			fprintf(stderr, "Cannot find device \"%s\"\n", d);
			return 1;
		}
		filter_ifindex = t.tcm_ifindex;
	}

	if (rtnl_dump_request(&rth, RTM_GETTFILTER, &t, sizeof(t)) < 0) {
		perror("Cannot send dump request");
		return 1;
	}

	if (rtnl_dump_filter(&rth, print_filter, stdout) < 0) {
		fprintf(stderr, "Dump terminated\n");
		return 1;
	}

	return 0;
}

int do_filter(int argc, char **argv)
{
	if (argc < 1)
		return tc_filter_list(0, NULL);
	if (matches(*argv, "add") == 0)
		return tc_filter_modify(RTM_NEWTFILTER, NLM_F_EXCL|NLM_F_CREATE, argc-1, argv+1);
	if (matches(*argv, "change") == 0)
		return tc_filter_modify(RTM_NEWTFILTER, 0, argc-1, argv+1);
	if (matches(*argv, "replace") == 0)
		return tc_filter_modify(RTM_NEWTFILTER, NLM_F_CREATE, argc-1, argv+1);
	if (matches(*argv, "delete") == 0)
		return tc_filter_modify(RTM_DELTFILTER, 0,  argc-1, argv+1);
#if 0
	if (matches(*argv, "get") == 0)
		return tc_filter_get(RTM_GETTFILTER, 0,  argc-1, argv+1);
#endif
	if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
	    || matches(*argv, "lst") == 0)
		return tc_filter_list(argc-1, argv+1);
	if (matches(*argv, "help") == 0) {
		usage();
		return 0;
        }
	fprintf(stderr, "Command \"%s\" is unknown, try \"tc filter help\".\n", *argv);
	return -1;
}
Commit	Line	Data
aba5acdf SH	1	/*
	2	* tc_filter.c "tc filter".
	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: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
	10	*
	11	*/
	12
	13	#include <stdio.h>
	14	#include <stdlib.h>
	15	#include <unistd.h>
	16	#include <syslog.h>
	17	#include <fcntl.h>
aba5acdf SH	18	#include <sys/socket.h>
	19	#include <netinet/in.h>
	20	#include <arpa/inet.h>
	21	#include <string.h>
	22	#include <linux/if_ether.h>
	23
	24	#include "rt_names.h"
	25	#include "utils.h"
	26	#include "tc_util.h"
	27	#include "tc_common.h"
	28
024481bb	29	static void usage(void);
aba5acdf SH	30
	31	static void usage(void)
	32	{
e5d179d8	33	fprintf(stderr, "Usage: tc filter [ add \| del \| change \| replace \| show ] dev STRING\n");
de33a430	34	fprintf(stderr, " [ pref PRIO ] protocol PROTO\n");
aba5acdf SH	35	fprintf(stderr, " [ estimator INTERVAL TIME_CONSTANT ]\n");
	36	fprintf(stderr, " [ root \| classid CLASSID ] [ handle FILTERID ]\n");
	37	fprintf(stderr, " [ [ FILTER_TYPE ] [ help \| OPTIONS ] ]\n");
	38	fprintf(stderr, "\n");
	39	fprintf(stderr, " tc filter show [ dev STRING ] [ root \| parent CLASSID ]\n");
	40	fprintf(stderr, "Where:\n");
4bd62446	41	fprintf(stderr, "FILTER_TYPE := { rsvp \| u32 \| bpf \| fw \| route \| etc. }\n");
aba5acdf SH	42	fprintf(stderr, "FILTERID := ... format depends on classifier, see there\n");
aba5acdf SH	43	fprintf(stderr, "OPTIONS := ... try tc filter add <desired FILTER_KIND> help\n");
024481bb	44	return;
aba5acdf SH	45	}
	46
	47
d1f28cf1	48	static int tc_filter_modify(int cmd, unsigned flags, int argc, char **argv)
aba5acdf	49	{
aba5acdf SH	50	struct {
	51	struct nlmsghdr n;
	52	struct tcmsg t;
2373fde9	53	char buf[MAX_MSG];
aba5acdf SH	54	} req;
	55	struct filter_util *q = NULL;
	56	__u32 prio = 0;
ae761068	57	__u32 protocol = 0;
083a5f00	58	int protocol_set = 0;
aba5acdf SH	59	char *fhandle = NULL;
	60	char d[16];
	61	char k[16];
	62	struct tc_estimator est;
	63
	64	memset(&req, 0, sizeof(req));
	65	memset(&est, 0, sizeof(est));
	66	memset(d, 0, sizeof(d));
	67	memset(k, 0, sizeof(k));
	68	memset(&req, 0, sizeof(req));
	69
	70	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg));
	71	req.n.nlmsg_flags = NLM_F_REQUEST\|flags;
	72	req.n.nlmsg_type = cmd;
	73	req.t.tcm_family = AF_UNSPEC;
	74
ae761068	75	if (cmd == RTM_NEWTFILTER && flags & NLM_F_CREATE)
05fb9184	76	protocol = htons(ETH_P_ALL);
ae761068	77
aba5acdf SH	78	while (argc > 0) {
	79	if (strcmp(*argv, "dev") == 0) {
	80	NEXT_ARG();
	81	if (d[0])
	82	duparg("dev", *argv);
	83	strncpy(d, *argv, sizeof(d)-1);
	84	} else if (strcmp(*argv, "root") == 0) {
	85	if (req.t.tcm_parent) {
	86	fprintf(stderr, "Error: \"root\" is duplicate parent ID\n");
024481bb	87	return -1;
aba5acdf SH	88	}
	89	req.t.tcm_parent = TC_H_ROOT;
	90	} else if (strcmp(*argv, "parent") == 0) {
	91	__u32 handle;
	92	NEXT_ARG();
	93	if (req.t.tcm_parent)
	94	duparg("parent", *argv);
	95	if (get_tc_classid(&handle, *argv))
f1675d61	96	invarg("Invalid parent ID", *argv);
aba5acdf SH	97	req.t.tcm_parent = handle;
	98	} else if (strcmp(*argv, "handle") == 0) {
	99	NEXT_ARG();
	100	if (fhandle)
	101	duparg("handle", *argv);
	102	fhandle = *argv;
	103	} else if (matches(*argv, "preference") == 0 \|\|
	104	matches(*argv, "priority") == 0) {
	105	NEXT_ARG();
	106	if (prio)
	107	duparg("priority", *argv);
424adc19	108	if (get_u32(&prio, *argv, 0) \|\| prio > 0xFFFF)
f1675d61	109	invarg("invalid priority value", *argv);
aba5acdf SH	110	} else if (matches(*argv, "protocol") == 0) {
	111	__u16 id;
	112	NEXT_ARG();
083a5f00	113	if (protocol_set)
aba5acdf SH	114	duparg("protocol", *argv);
aba5acdf SH	115	if (ll_proto_a2n(&id, *argv))
f1675d61	116	invarg("invalid protocol", *argv);
aba5acdf	117	protocol = id;
083a5f00	118	protocol_set = 1;
aba5acdf SH	119	} else if (matches(*argv, "estimator") == 0) {
	120	if (parse_estimator(&argc, &argv, &est) < 0)
	121	return -1;
	122	} else if (matches(*argv, "help") == 0) {
	123	usage();
3a99df70	124	return 0;
aba5acdf SH	125	} else {
	126	strncpy(k, *argv, sizeof(k)-1);
	127
	128	q = get_filter_kind(k);
	129	argc--; argv++;
	130	break;
	131	}
	132
	133	argc--; argv++;
	134	}
	135
	136	req.t.tcm_info = TC_H_MAKE(prio<<16, protocol);
	137
	138	if (k[0])
	139	addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1);
	140
	141	if (q) {
	142	if (q->parse_fopt(q, fhandle, argc, argv, &req.n))
024481bb	143	return 1;
aba5acdf SH	144	} else {
	145	if (fhandle) {
	146	fprintf(stderr, "Must specify filter type when using "
	147	"\"handle\"\n");
024481bb	148	return -1;
aba5acdf SH	149	}
	150	if (argc) {
	151	if (matches(*argv, "help") == 0)
	152	usage();
	153	fprintf(stderr, "Garbage instead of arguments \"%s ...\". Try \"tc filter help\".\n", *argv);
024481bb	154	return -1;
aba5acdf SH	155	}
	156	}
	157	if (est.ewma_log)
	158	addattr_l(&req.n, sizeof(req), TCA_RATE, &est, sizeof(est));
	159
aba5acdf SH	160
aba5acdf SH	161	if (d[0]) {
3d0b7439	162	ll_init_map(&rth);
aba5acdf SH	163
	164	if ((req.t.tcm_ifindex = ll_name_to_index(d)) == 0) {
	165	fprintf(stderr, "Cannot find device \"%s\"\n", d);
024481bb	166	return 1;
aba5acdf SH	167	}
	168	}
	169
c079e121	170	if (rtnl_talk(&rth, &req.n, NULL, 0) < 0) {
2373fde9	171	fprintf(stderr, "We have an error talking to the kernel\n");
024481bb	172	return 2;
2373fde9	173	}
aba5acdf	174
aba5acdf SH	175	return 0;
	176	}
	177
	178	static __u32 filter_parent;
	179	static int filter_ifindex;
	180	static __u32 filter_prio;
	181	static __u32 filter_protocol;
eefcbc72	182	__u16 f_proto = 0;
aba5acdf	183
5bec3484	184	int print_filter(const struct sockaddr_nl *who,
ae665a52	185	struct nlmsghdr *n,
de481780	186	void *arg)
aba5acdf SH	187	{
	188	FILE fp = (FILE)arg;
	189	struct tcmsg *t = NLMSG_DATA(n);
	190	int len = n->nlmsg_len;
	191	struct rtattr * tb[TCA_MAX+1];
	192	struct filter_util *q;
	193	char abuf[256];
	194
	195	if (n->nlmsg_type != RTM_NEWTFILTER && n->nlmsg_type != RTM_DELTFILTER) {
	196	fprintf(stderr, "Not a filter\n");
	197	return 0;
	198	}
	199	len -= NLMSG_LENGTH(sizeof(*t));
	200	if (len < 0) {
	201	fprintf(stderr, "Wrong len %d\n", len);
	202	return -1;
	203	}
	204
	205	memset(tb, 0, sizeof(tb));
	206	parse_rtattr(tb, TCA_MAX, TCA_RTA(t), len);
	207
	208	if (tb[TCA_KIND] == NULL) {
2373fde9	209	fprintf(stderr, "print_filter: NULL kind\n");
aba5acdf SH	210	return -1;
	211	}
	212
	213	if (n->nlmsg_type == RTM_DELTFILTER)
	214	fprintf(fp, "deleted ");
	215
	216	fprintf(fp, "filter ");
	217	if (!filter_ifindex \|\| filter_ifindex != t->tcm_ifindex)
	218	fprintf(fp, "dev %s ", ll_index_to_name(t->tcm_ifindex));
	219
	220	if (!filter_parent \|\| filter_parent != t->tcm_parent) {
	221	if (t->tcm_parent == TC_H_ROOT)
	222	fprintf(fp, "root ");
	223	else {
	224	print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
	225	fprintf(fp, "parent %s ", abuf);
	226	}
	227	}
	228	if (t->tcm_info) {
eefcbc72	229	f_proto = TC_H_MIN(t->tcm_info);
aba5acdf	230	__u32 prio = TC_H_MAJ(t->tcm_info)>>16;
eefcbc72	231	if (!filter_protocol \|\| filter_protocol != f_proto) {
eefcbc72	232	if (f_proto) {
aba5acdf SH	233	SPRINT_BUF(b1);
aba5acdf SH	234	fprintf(fp, "protocol %s ",
eefcbc72	235	ll_proto_n2a(f_proto, b1, sizeof(b1)));
aba5acdf SH	236	}
	237	}
	238	if (!filter_prio \|\| filter_prio != prio) {
	239	if (prio)
	240	fprintf(fp, "pref %u ", prio);
	241	}
	242	}
ff24746c	243	fprintf(fp, "%s ", rta_getattr_str(tb[TCA_KIND]));
aba5acdf SH	244	q = get_filter_kind(RTA_DATA(tb[TCA_KIND]));
	245	if (tb[TCA_OPTIONS]) {
	246	if (q)
	247	q->print_fopt(q, fp, tb[TCA_OPTIONS], t->tcm_handle);
	248	else
	249	fprintf(fp, "[cannot parse parameters]");
	250	}
	251	fprintf(fp, "\n");
	252
e5879dc6	253	if (show_stats && (tb[TCA_STATS] \|\| tb[TCA_STATS2])) {
e5879dc6	254	print_tcstats_attr(fp, tb, " ", NULL);
de481780	255	fprintf(fp, "\n");
aba5acdf	256	}
de481780	257
aba5acdf SH	258	fflush(fp);
	259	return 0;
	260	}
	261
	262
d1f28cf1	263	static int tc_filter_list(int argc, char **argv)
aba5acdf SH	264	{
aba5acdf SH	265	struct tcmsg t;
aba5acdf SH	266	char d[16];
	267	__u32 prio = 0;
	268	__u32 protocol = 0;
	269	char *fhandle = NULL;
	270
	271	memset(&t, 0, sizeof(t));
	272	t.tcm_family = AF_UNSPEC;
	273	memset(d, 0, sizeof(d));
	274
	275	while (argc > 0) {
	276	if (strcmp(*argv, "dev") == 0) {
	277	NEXT_ARG();
	278	if (d[0])
	279	duparg("dev", *argv);
	280	strncpy(d, *argv, sizeof(d)-1);
	281	} else if (strcmp(*argv, "root") == 0) {
	282	if (t.tcm_parent) {
	283	fprintf(stderr, "Error: \"root\" is duplicate parent ID\n");
024481bb	284	return -1;
aba5acdf SH	285	}
	286	filter_parent = t.tcm_parent = TC_H_ROOT;
	287	} else if (strcmp(*argv, "parent") == 0) {
	288	__u32 handle;
	289	NEXT_ARG();
	290	if (t.tcm_parent)
	291	duparg("parent", *argv);
	292	if (get_tc_classid(&handle, *argv))
f1675d61	293	invarg("invalid parent ID", *argv);
aba5acdf SH	294	filter_parent = t.tcm_parent = handle;
	295	} else if (strcmp(*argv, "handle") == 0) {
	296	NEXT_ARG();
	297	if (fhandle)
	298	duparg("handle", *argv);
	299	fhandle = *argv;
	300	} else if (matches(*argv, "preference") == 0 \|\|
	301	matches(*argv, "priority") == 0) {
	302	NEXT_ARG();
	303	if (prio)
	304	duparg("priority", *argv);
	305	if (get_u32(&prio, *argv, 0))
f1675d61	306	invarg("invalid preference", *argv);
aba5acdf SH	307	filter_prio = prio;
	308	} else if (matches(*argv, "protocol") == 0) {
	309	__u16 res;
	310	NEXT_ARG();
	311	if (protocol)
	312	duparg("protocol", *argv);
	313	if (ll_proto_a2n(&res, *argv))
f1675d61	314	invarg("invalid protocol", *argv);
aba5acdf SH	315	protocol = res;
	316	filter_protocol = protocol;
	317	} else if (matches(*argv, "help") == 0) {
	318	usage();
	319	} else {
	320	fprintf(stderr, " What is \"%s\"? Try \"tc filter help\"\n", *argv);
024481bb	321	return -1;
aba5acdf SH	322	}
	323
	324	argc--; argv++;
	325	}
	326
	327	t.tcm_info = TC_H_MAKE(prio<<16, protocol);
	328
3d0b7439	329	ll_init_map(&rth);
aba5acdf SH	330
	331	if (d[0]) {
	332	if ((t.tcm_ifindex = ll_name_to_index(d)) == 0) {
	333	fprintf(stderr, "Cannot find device \"%s\"\n", d);
024481bb	334	return 1;
aba5acdf SH	335	}
	336	filter_ifindex = t.tcm_ifindex;
	337	}
	338
3d0b7439	339	if (rtnl_dump_request(&rth, RTM_GETTFILTER, &t, sizeof(t)) < 0) {
aba5acdf	340	perror("Cannot send dump request");
024481bb	341	return 1;
aba5acdf SH	342	}
aba5acdf SH	343
3d0b7439	344	if (rtnl_dump_filter(&rth, print_filter, stdout) < 0) {
aba5acdf	345	fprintf(stderr, "Dump terminated\n");
024481bb	346	return 1;
aba5acdf SH	347	}
aba5acdf SH	348
aba5acdf SH	349	return 0;
	350	}
	351
	352	int do_filter(int argc, char **argv)
	353	{
	354	if (argc < 1)
	355	return tc_filter_list(0, NULL);
	356	if (matches(*argv, "add") == 0)
	357	return tc_filter_modify(RTM_NEWTFILTER, NLM_F_EXCL\|NLM_F_CREATE, argc-1, argv+1);
	358	if (matches(*argv, "change") == 0)
	359	return tc_filter_modify(RTM_NEWTFILTER, 0, argc-1, argv+1);
	360	if (matches(*argv, "replace") == 0)
	361	return tc_filter_modify(RTM_NEWTFILTER, NLM_F_CREATE, argc-1, argv+1);
	362	if (matches(*argv, "delete") == 0)
	363	return tc_filter_modify(RTM_DELTFILTER, 0, argc-1, argv+1);
	364	#if 0
	365	if (matches(*argv, "get") == 0)
	366	return tc_filter_get(RTM_GETTFILTER, 0, argc-1, argv+1);
	367	#endif
	368	if (matches(argv, "list") == 0 \|\| matches(argv, "show") == 0
	369	\|\| matches(*argv, "lst") == 0)
	370	return tc_filter_list(argc-1, argv+1);
e5d179d8	371	if (matches(*argv, "help") == 0) {
aba5acdf	372	usage();
e5d179d8 HT	373	return 0;
e5d179d8 HT	374	}
aba5acdf	375	fprintf(stderr, "Command \"%s\" is unknown, try \"tc filter help\".\n", *argv);
024481bb	376	return -1;
aba5acdf SH	377	}
aba5acdf SH	378