[mirror_iproute2.git] / tc / tc_qdisc.c

/*
 * tc_qdisc.c		"tc qdisc".
 *
 *		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>
 *		J Hadi Salim: Extension to ingress
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <math.h>
#include <malloc.h>

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

static int usage(void)
{
	fprintf(stderr, "Usage: tc qdisc [ add | del | replace | change | show ] dev STRING\n");
	fprintf(stderr, "       [ handle QHANDLE ] [ root | ingress | clsact | parent CLASSID ]\n");
	fprintf(stderr, "       [ estimator INTERVAL TIME_CONSTANT ]\n");
	fprintf(stderr, "       [ stab [ help | STAB_OPTIONS] ]\n");
	fprintf(stderr, "       [ [ QDISC_KIND ] [ help | OPTIONS ] ]\n");
	fprintf(stderr, "\n");
	fprintf(stderr, "       tc qdisc show [ dev STRING ] [ ingress | clsact ] [ invisible ]\n");
	fprintf(stderr, "Where:\n");
	fprintf(stderr, "QDISC_KIND := { [p|b]fifo | tbf | prio | cbq | red | etc. }\n");
	fprintf(stderr, "OPTIONS := ... try tc qdisc add <desired QDISC_KIND> help\n");
	fprintf(stderr, "STAB_OPTIONS := ... try tc qdisc add stab help\n");
	return -1;
}

static int tc_qdisc_modify(int cmd, unsigned int flags, int argc, char **argv)
{
	struct qdisc_util *q = NULL;
	struct tc_estimator est = {};
	struct {
		struct tc_sizespec	szopts;
		__u16			*data;
	} stab = {};
	char  d[IFNAMSIZ] = {};
	char  k[FILTER_NAMESZ] = {};
	struct {
		struct nlmsghdr	n;
		struct tcmsg		t;
		char			buf[TCA_BUF_MAX];
	} req = {
		.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)),
		.n.nlmsg_flags = NLM_F_REQUEST | flags,
		.n.nlmsg_type = cmd,
		.t.tcm_family = AF_UNSPEC,
	};

	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, "handle") == 0) {
			__u32 handle;

			if (req.t.tcm_handle)
				duparg("handle", *argv);
			NEXT_ARG();
			if (get_qdisc_handle(&handle, *argv))
				invarg("invalid qdisc ID", *argv);
			req.t.tcm_handle = handle;
		} 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, "clsact") == 0) {
			if (req.t.tcm_parent) {
				fprintf(stderr, "Error: \"clsact\" is a duplicate parent ID\n");
				return -1;
			}
			req.t.tcm_parent = TC_H_CLSACT;
			strncpy(k, "clsact", sizeof(k) - 1);
			q = get_qdisc_kind(k);
			req.t.tcm_handle = TC_H_MAKE(TC_H_CLSACT, 0);
			NEXT_ARG_FWD();
			break;
		} else if (strcmp(*argv, "ingress") == 0) {
			if (req.t.tcm_parent) {
				fprintf(stderr, "Error: \"ingress\" is a duplicate parent ID\n");
				return -1;
			}
			req.t.tcm_parent = TC_H_INGRESS;
			strncpy(k, "ingress", sizeof(k) - 1);
			q = get_qdisc_kind(k);
			req.t.tcm_handle = TC_H_MAKE(TC_H_INGRESS, 0);
			NEXT_ARG_FWD();
			break;
		} 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 (matches(*argv, "estimator") == 0) {
			if (parse_estimator(&argc, &argv, &est))
				return -1;
		} else if (matches(*argv, "stab") == 0) {
			if (parse_size_table(&argc, &argv, &stab.szopts) < 0)
				return -1;
			continue;
		} else if (matches(*argv, "help") == 0) {
			usage();
		} else {
			strncpy(k, *argv, sizeof(k)-1);

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

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

	if (q) {
		if (q->parse_qopt) {
			if (q->parse_qopt(q, argc, argv, &req.n, d))
				return 1;
		} else if (argc) {
			fprintf(stderr, "qdisc '%s' does not support option parsing\n", k);
			return -1;
		}
	} else {
		if (argc) {
			if (matches(*argv, "help") == 0)
				usage();

			fprintf(stderr, "Garbage instead of arguments \"%s ...\". Try \"tc qdisc help\".\n", *argv);
			return -1;
		}
	}

	if (check_size_table_opts(&stab.szopts)) {
		struct rtattr *tail;

		if (tc_calc_size_table(&stab.szopts, &stab.data) < 0) {
			fprintf(stderr, "failed to calculate size table.\n");
			return -1;
		}

		tail = NLMSG_TAIL(&req.n);
		addattr_l(&req.n, sizeof(req), TCA_STAB, NULL, 0);
		addattr_l(&req.n, sizeof(req), TCA_STAB_BASE, &stab.szopts,
			  sizeof(stab.szopts));
		if (stab.data)
			addattr_l(&req.n, sizeof(req), TCA_STAB_DATA, stab.data,
				  stab.szopts.tsize * sizeof(__u16));
		tail->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)tail;
		if (stab.data)
			free(stab.data);
	}

	if (d[0])  {
		int idx;

		ll_init_map(&rth);

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

	if (rtnl_talk(&rth, &req.n, NULL) < 0)
		return 2;

	return 0;
}

static int filter_ifindex;

int print_qdisc(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 qdisc_util *q;
	char abuf[256];

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

	if (filter_ifindex && filter_ifindex != t->tcm_ifindex)
		return 0;

	parse_rtattr(tb, TCA_MAX, TCA_RTA(t), len);

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

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

	if (n->nlmsg_type == RTM_NEWQDISC &&
			(n->nlmsg_flags & NLM_F_CREATE) &&
			(n->nlmsg_flags & NLM_F_REPLACE))
		fprintf(fp, "replaced ");

	if (n->nlmsg_type == RTM_NEWQDISC &&
			(n->nlmsg_flags & NLM_F_CREATE) &&
			(n->nlmsg_flags & NLM_F_EXCL))
		fprintf(fp, "added ");

	if (show_raw)
		fprintf(fp, "qdisc %s %x:[%08x]  ",
			rta_getattr_str(tb[TCA_KIND]),
			t->tcm_handle >> 16, t->tcm_handle);
	else
		fprintf(fp, "qdisc %s %x: ", rta_getattr_str(tb[TCA_KIND]),
			t->tcm_handle >> 16);

	if (filter_ifindex == 0)
		fprintf(fp, "dev %s ", ll_index_to_name(t->tcm_ifindex));

	if (t->tcm_parent == TC_H_ROOT)
		fprintf(fp, "root ");
	else if (t->tcm_parent) {
		print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
		fprintf(fp, "parent %s ", abuf);
	}

	if (t->tcm_info != 1)
		fprintf(fp, "refcnt %d ", t->tcm_info);

	/* pfifo_fast is generic enough to warrant the hardcoding --JHS */
	if (strcmp("pfifo_fast", RTA_DATA(tb[TCA_KIND])) == 0)
		q = get_qdisc_kind("prio");
	else
		q = get_qdisc_kind(RTA_DATA(tb[TCA_KIND]));

	if (tb[TCA_OPTIONS]) {
		if (q)
			q->print_qopt(q, fp, tb[TCA_OPTIONS]);
		else
			fprintf(fp, "[cannot parse qdisc parameters]");
	}
	fprintf(fp, "\n");

	if (show_details && tb[TCA_STAB]) {
		print_size_table(fp, " ", tb[TCA_STAB]);
		fprintf(fp, "\n");
	}

	if (show_stats) {
		struct rtattr *xstats = NULL;

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

		if (q && xstats && q->print_xstats) {
			q->print_xstats(q, fp, xstats);
			fprintf(fp, "\n");
		}
	}
	fflush(fp);
	return 0;
}

static int tc_qdisc_list(int argc, char **argv)
{
	struct tcmsg t = { .tcm_family = AF_UNSPEC };
	char d[IFNAMSIZ] = {};
	bool dump_invisible = false;

	while (argc > 0) {
		if (strcmp(*argv, "dev") == 0) {
			NEXT_ARG();
			strncpy(d, *argv, sizeof(d)-1);
		} else if (strcmp(*argv, "ingress") == 0 ||
			   strcmp(*argv, "clsact") == 0) {
			if (t.tcm_parent) {
				fprintf(stderr, "Duplicate parent ID\n");
				usage();
			}
			t.tcm_parent = TC_H_INGRESS;
		} else if (matches(*argv, "help") == 0) {
			usage();
		} else if (strcmp(*argv, "invisible") == 0) {
			dump_invisible = true;
		} else {
			fprintf(stderr, "What is \"%s\"? Try \"tc qdisc help\".\n", *argv);
			return -1;
		}

		argc--; argv++;
	}

	ll_init_map(&rth);

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

	if (dump_invisible) {
		struct {
			struct nlmsghdr n;
			struct tcmsg t;
			char buf[256];
		} req = {
			.n.nlmsg_type = RTM_GETQDISC,
			.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)),
		};

		req.t.tcm_family = AF_UNSPEC;

		addattr(&req.n, 256, TCA_DUMP_INVISIBLE);
		if (rtnl_dump_request_n(&rth, &req.n) < 0) {
			perror("Cannot send dump request");
			return 1;
		}

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

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

	return 0;
}

int do_qdisc(int argc, char **argv)
{
	if (argc < 1)
		return tc_qdisc_list(0, NULL);
	if (matches(*argv, "add") == 0)
		return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_EXCL|NLM_F_CREATE, argc-1, argv+1);
	if (matches(*argv, "change") == 0)
		return tc_qdisc_modify(RTM_NEWQDISC, 0, argc-1, argv+1);
	if (matches(*argv, "replace") == 0)
		return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1);
	if (matches(*argv, "link") == 0)
		return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_REPLACE, argc-1, argv+1);
	if (matches(*argv, "delete") == 0)
		return tc_qdisc_modify(RTM_DELQDISC, 0,  argc-1, argv+1);
#if 0
	if (matches(*argv, "get") == 0)
		return tc_qdisc_get(RTM_GETQDISC, 0,  argc-1, argv+1);
#endif
	if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
	    || matches(*argv, "lst") == 0)
		return tc_qdisc_list(argc-1, argv+1);
	if (matches(*argv, "help") == 0) {
		usage();
		return 0;
	}
	fprintf(stderr, "Command \"%s\" is unknown, try \"tc qdisc help\".\n", *argv);
	return -1;
}
Commit	Line	Data
aba5acdf SH	1	/*
	2	* tc_qdisc.c "tc qdisc".
	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	* J Hadi Salim: Extension to ingress
	11	*/
	12
	13	#include <stdio.h>
	14	#include <stdlib.h>
	15	#include <unistd.h>
aba5acdf SH	16	#include <fcntl.h>
	17	#include <sys/socket.h>
	18	#include <netinet/in.h>
	19	#include <arpa/inet.h>
	20	#include <string.h>
	21	#include <math.h>
839c8456	22	#include <malloc.h>
aba5acdf SH	23
	24	#include "utils.h"
	25	#include "tc_util.h"
	26	#include "tc_common.h"
	27
11656f1b	28	static int usage(void)
aba5acdf	29	{
e5d179d8	30	fprintf(stderr, "Usage: tc qdisc [ add \| del \| replace \| change \| show ] dev STRING\n");
8f9afdd5	31	fprintf(stderr, " [ handle QHANDLE ] [ root \| ingress \| clsact \| parent CLASSID ]\n");
aba5acdf	32	fprintf(stderr, " [ estimator INTERVAL TIME_CONSTANT ]\n");
839c8456	33	fprintf(stderr, " [ stab [ help \| STAB_OPTIONS] ]\n");
aba5acdf SH	34	fprintf(stderr, " [ [ QDISC_KIND ] [ help \| OPTIONS ] ]\n");
aba5acdf SH	35	fprintf(stderr, "\n");
7c581a12	36	fprintf(stderr, " tc qdisc show [ dev STRING ] [ ingress \| clsact ] [ invisible ]\n");
aba5acdf SH	37	fprintf(stderr, "Where:\n");
	38	fprintf(stderr, "QDISC_KIND := { [p\|b]fifo \| tbf \| prio \| cbq \| red \| etc. }\n");
	39	fprintf(stderr, "OPTIONS := ... try tc qdisc add <desired QDISC_KIND> help\n");
839c8456	40	fprintf(stderr, "STAB_OPTIONS := ... try tc qdisc add stab help\n");
11656f1b	41	return -1;
aba5acdf SH	42	}
aba5acdf SH	43
32a121cb	44	static int tc_qdisc_modify(int cmd, unsigned int flags, int argc, char **argv)
aba5acdf	45	{
aba5acdf	46	struct qdisc_util *q = NULL;
9579afb2	47	struct tc_estimator est = {};
839c8456 JK	48	struct {
	49	struct tc_sizespec szopts;
	50	__u16 *data;
d17b136f	51	} stab = {};
b317557f SH	52	char d[IFNAMSIZ] = {};
b317557f SH	53	char k[FILTER_NAMESZ] = {};
f307c24e	54	struct {
32a121cb SH	55	struct nlmsghdr n;
	56	struct tcmsg t;
	57	char buf[TCA_BUF_MAX];
d17b136f PS	58	} req = {
	59	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)),
	60	.n.nlmsg_flags = NLM_F_REQUEST \| flags,
	61	.n.nlmsg_type = cmd,
	62	.t.tcm_family = AF_UNSPEC,
	63	};
aba5acdf SH	64
	65	while (argc > 0) {
	66	if (strcmp(*argv, "dev") == 0) {
	67	NEXT_ARG();
	68	if (d[0])
	69	duparg("dev", *argv);
	70	strncpy(d, *argv, sizeof(d)-1);
	71	} else if (strcmp(*argv, "handle") == 0) {
	72	__u32 handle;
32a121cb	73
aba5acdf SH	74	if (req.t.tcm_handle)
	75	duparg("handle", *argv);
	76	NEXT_ARG();
	77	if (get_qdisc_handle(&handle, *argv))
f1675d61	78	invarg("invalid qdisc ID", *argv);
aba5acdf SH	79	req.t.tcm_handle = handle;
	80	} else if (strcmp(*argv, "root") == 0) {
	81	if (req.t.tcm_parent) {
	82	fprintf(stderr, "Error: \"root\" is duplicate parent ID\n");
11656f1b	83	return -1;
aba5acdf SH	84	}
aba5acdf SH	85	req.t.tcm_parent = TC_H_ROOT;
8f9afdd5 DB	86	} else if (strcmp(*argv, "clsact") == 0) {
	87	if (req.t.tcm_parent) {
	88	fprintf(stderr, "Error: \"clsact\" is a duplicate parent ID\n");
	89	return -1;
	90	}
	91	req.t.tcm_parent = TC_H_CLSACT;
	92	strncpy(k, "clsact", sizeof(k) - 1);
	93	q = get_qdisc_kind(k);
	94	req.t.tcm_handle = TC_H_MAKE(TC_H_CLSACT, 0);
	95	NEXT_ARG_FWD();
	96	break;
aba5acdf SH	97	} else if (strcmp(*argv, "ingress") == 0) {
	98	if (req.t.tcm_parent) {
	99	fprintf(stderr, "Error: \"ingress\" is a duplicate parent ID\n");
11656f1b	100	return -1;
aba5acdf SH	101	}
aba5acdf SH	102	req.t.tcm_parent = TC_H_INGRESS;
0d45c4b4	103	strncpy(k, "ingress", sizeof(k) - 1);
aba5acdf	104	q = get_qdisc_kind(k);
0d45c4b4 DB	105	req.t.tcm_handle = TC_H_MAKE(TC_H_INGRESS, 0);
0d45c4b4 DB	106	NEXT_ARG_FWD();
aba5acdf	107	break;
aba5acdf SH	108	} else if (strcmp(*argv, "parent") == 0) {
aba5acdf SH	109	__u32 handle;
32a121cb	110
aba5acdf SH	111	NEXT_ARG();
	112	if (req.t.tcm_parent)
	113	duparg("parent", *argv);
	114	if (get_tc_classid(&handle, *argv))
f1675d61	115	invarg("invalid parent ID", *argv);
aba5acdf SH	116	req.t.tcm_parent = handle;
	117	} else if (matches(*argv, "estimator") == 0) {
	118	if (parse_estimator(&argc, &argv, &est))
	119	return -1;
839c8456 JK	120	} else if (matches(*argv, "stab") == 0) {
	121	if (parse_size_table(&argc, &argv, &stab.szopts) < 0)
	122	return -1;
	123	continue;
aba5acdf SH	124	} else if (matches(*argv, "help") == 0) {
	125	usage();
	126	} else {
	127	strncpy(k, *argv, sizeof(k)-1);
	128
	129	q = get_qdisc_kind(k);
	130	argc--; argv++;
	131	break;
	132	}
	133	argc--; argv++;
	134	}
	135
	136	if (k[0])
	137	addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1);
	138	if (est.ewma_log)
	139	addattr_l(&req.n, sizeof(req), TCA_RATE, &est, sizeof(est));
	140
0a502b21 SH	141	if (q) {
0a502b21 SH	142	if (q->parse_qopt) {
927e3cfb	143	if (q->parse_qopt(q, argc, argv, &req.n, d))
e9e78b0d	144	return 1;
0a502b21 SH	145	} else if (argc) {
	146	fprintf(stderr, "qdisc '%s' does not support option parsing\n", k);
	147	return -1;
	148	}
	149	} else {
	150	if (argc) {
aba5acdf SH	151	if (matches(*argv, "help") == 0)
	152	usage();
	153
	154	fprintf(stderr, "Garbage instead of arguments \"%s ...\". Try \"tc qdisc help\".\n", *argv);
11656f1b	155	return -1;
aba5acdf SH	156	}
	157	}
	158
839c8456 JK	159	if (check_size_table_opts(&stab.szopts)) {
	160	struct rtattr *tail;
	161
	162	if (tc_calc_size_table(&stab.szopts, &stab.data) < 0) {
	163	fprintf(stderr, "failed to calculate size table.\n");
	164	return -1;
	165	}
	166
	167	tail = NLMSG_TAIL(&req.n);
	168	addattr_l(&req.n, sizeof(req), TCA_STAB, NULL, 0);
	169	addattr_l(&req.n, sizeof(req), TCA_STAB_BASE, &stab.szopts,
	170	sizeof(stab.szopts));
	171	if (stab.data)
	172	addattr_l(&req.n, sizeof(req), TCA_STAB_DATA, stab.data,
	173	stab.szopts.tsize * sizeof(__u16));
	174	tail->rta_len = (void )NLMSG_TAIL(&req.n) - (void )tail;
	175	if (stab.data)
	176	free(stab.data);
	177	}
	178
aba5acdf SH	179	if (d[0]) {
	180	int idx;
	181
3d0b7439	182	ll_init_map(&rth);
aba5acdf	183
b932e6f3 SH	184	idx = ll_name_to_index(d);
b932e6f3 SH	185	if (idx == 0) {
aba5acdf	186	fprintf(stderr, "Cannot find device \"%s\"\n", d);
11656f1b	187	return 1;
aba5acdf SH	188	}
	189	req.t.tcm_ifindex = idx;
	190	}
	191
86bf43c7	192	if (rtnl_talk(&rth, &req.n, NULL) < 0)
11656f1b	193	return 2;
aba5acdf	194
aba5acdf SH	195	return 0;
	196	}
	197
aba5acdf SH	198	static int filter_ifindex;
aba5acdf SH	199
ae665a52	200	int print_qdisc(const struct sockaddr_nl *who,
b932e6f3	201	struct nlmsghdr n, void arg)
aba5acdf	202	{
32a121cb	203	FILE fp = (FILE )arg;
aba5acdf SH	204	struct tcmsg *t = NLMSG_DATA(n);
aba5acdf SH	205	int len = n->nlmsg_len;
32a121cb	206	struct rtattr *tb[TCA_MAX+1];
aba5acdf SH	207	struct qdisc_util *q;
	208	char abuf[256];
	209
	210	if (n->nlmsg_type != RTM_NEWQDISC && n->nlmsg_type != RTM_DELQDISC) {
	211	fprintf(stderr, "Not a qdisc\n");
	212	return 0;
	213	}
	214	len -= NLMSG_LENGTH(sizeof(*t));
	215	if (len < 0) {
	216	fprintf(stderr, "Wrong len %d\n", len);
	217	return -1;
	218	}
	219
	220	if (filter_ifindex && filter_ifindex != t->tcm_ifindex)
	221	return 0;
	222
aba5acdf SH	223	parse_rtattr(tb, TCA_MAX, TCA_RTA(t), len);
	224
	225	if (tb[TCA_KIND] == NULL) {
2373fde9	226	fprintf(stderr, "print_qdisc: NULL kind\n");
aba5acdf SH	227	return -1;
	228	}
	229
	230	if (n->nlmsg_type == RTM_DELQDISC)
	231	fprintf(fp, "deleted ");
	232
274b63ae RM	233	if (n->nlmsg_type == RTM_NEWQDISC &&
	234	(n->nlmsg_flags & NLM_F_CREATE) &&
	235	(n->nlmsg_flags & NLM_F_REPLACE))
	236	fprintf(fp, "replaced ");
	237
	238	if (n->nlmsg_type == RTM_NEWQDISC &&
	239	(n->nlmsg_flags & NLM_F_CREATE) &&
	240	(n->nlmsg_flags & NLM_F_EXCL))
	241	fprintf(fp, "added ");
	242
d42e1444 RM	243	if (show_raw)
	244	fprintf(fp, "qdisc %s %x:[%08x] ",
	245	rta_getattr_str(tb[TCA_KIND]),
	246	t->tcm_handle >> 16, t->tcm_handle);
	247	else
	248	fprintf(fp, "qdisc %s %x: ", rta_getattr_str(tb[TCA_KIND]),
	249	t->tcm_handle >> 16);
	250
aba5acdf SH	251	if (filter_ifindex == 0)
aba5acdf SH	252	fprintf(fp, "dev %s ", ll_index_to_name(t->tcm_ifindex));
b932e6f3	253
aba5acdf SH	254	if (t->tcm_parent == TC_H_ROOT)
	255	fprintf(fp, "root ");
	256	else if (t->tcm_parent) {
	257	print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
	258	fprintf(fp, "parent %s ", abuf);
	259	}
b932e6f3 SH	260
b932e6f3 SH	261	if (t->tcm_info != 1)
aba5acdf	262	fprintf(fp, "refcnt %d ", t->tcm_info);
ae665a52	263
b932e6f3 SH	264	/* pfifo_fast is generic enough to warrant the hardcoding --JHS */
b932e6f3 SH	265	if (strcmp("pfifo_fast", RTA_DATA(tb[TCA_KIND])) == 0)
2373fde9 SH	266	q = get_qdisc_kind("prio");
	267	else
	268	q = get_qdisc_kind(RTA_DATA(tb[TCA_KIND]));
ae665a52	269
aba5acdf SH	270	if (tb[TCA_OPTIONS]) {
	271	if (q)
	272	q->print_qopt(q, fp, tb[TCA_OPTIONS]);
	273	else
	274	fprintf(fp, "[cannot parse qdisc parameters]");
	275	}
	276	fprintf(fp, "\n");
b932e6f3	277
839c8456 JK	278	if (show_details && tb[TCA_STAB]) {
	279	print_size_table(fp, " ", tb[TCA_STAB]);
	280	fprintf(fp, "\n");
	281	}
b932e6f3	282
aba5acdf	283	if (show_stats) {
e5879dc6	284	struct rtattr *xstats = NULL;
	285
	286	if (tb[TCA_STATS] \|\| tb[TCA_STATS2] \|\| tb[TCA_XSTATS]) {
	287	print_tcstats_attr(fp, tb, " ", &xstats);
649b0755	288	fprintf(fp, "\n");
aba5acdf	289	}
649b0755	290
e5879dc6	291	if (q && xstats && q->print_xstats) {
e5879dc6	292	q->print_xstats(q, fp, xstats);
aba5acdf SH	293	fprintf(fp, "\n");
	294	}
	295	}
	296	fflush(fp);
	297	return 0;
	298	}
	299
d1f28cf1	300	static int tc_qdisc_list(int argc, char **argv)
aba5acdf	301	{
d17b136f	302	struct tcmsg t = { .tcm_family = AF_UNSPEC };
b317557f	303	char d[IFNAMSIZ] = {};
7c581a12	304	bool dump_invisible = false;
ae665a52	305
aba5acdf SH	306	while (argc > 0) {
	307	if (strcmp(*argv, "dev") == 0) {
	308	NEXT_ARG();
	309	strncpy(d, *argv, sizeof(d)-1);
32a121cb	310	} else if (strcmp(*argv, "ingress") == 0 \|\|
8f9afdd5	311	strcmp(*argv, "clsact") == 0) {
b932e6f3 SH	312	if (t.tcm_parent) {
	313	fprintf(stderr, "Duplicate parent ID\n");
	314	usage();
	315	}
	316	t.tcm_parent = TC_H_INGRESS;
aba5acdf SH	317	} else if (matches(*argv, "help") == 0) {
aba5acdf SH	318	usage();
7c581a12 JK	319	} else if (strcmp(*argv, "invisible") == 0) {
7c581a12 JK	320	dump_invisible = true;
aba5acdf SH	321	} else {
	322	fprintf(stderr, "What is \"%s\"? Try \"tc qdisc help\".\n", *argv);
	323	return -1;
	324	}
	325
	326	argc--; argv++;
	327	}
	328
3d0b7439	329	ll_init_map(&rth);
aba5acdf SH	330
aba5acdf SH	331	if (d[0]) {
b932e6f3 SH	332	t.tcm_ifindex = ll_name_to_index(d);
b932e6f3 SH	333	if (t.tcm_ifindex == 0) {
aba5acdf	334	fprintf(stderr, "Cannot find device \"%s\"\n", d);
11656f1b	335	return 1;
aba5acdf SH	336	}
	337	filter_ifindex = t.tcm_ifindex;
	338	}
	339
7c581a12 JK	340	if (dump_invisible) {
	341	struct {
	342	struct nlmsghdr n;
	343	struct tcmsg t;
	344	char buf[256];
	345	} req = {
	346	.n.nlmsg_type = RTM_GETQDISC,
	347	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)),
	348	};
	349
	350	req.t.tcm_family = AF_UNSPEC;
	351
	352	addattr(&req.n, 256, TCA_DUMP_INVISIBLE);
	353	if (rtnl_dump_request_n(&rth, &req.n) < 0) {
	354	perror("Cannot send dump request");
	355	return 1;
	356	}
	357
	358	} else if (rtnl_dump_request(&rth, RTM_GETQDISC, &t, sizeof(t)) < 0) {
aba5acdf	359	perror("Cannot send dump request");
11656f1b	360	return 1;
aba5acdf SH	361	}
aba5acdf SH	362
3d0b7439	363	if (rtnl_dump_filter(&rth, print_qdisc, stdout) < 0) {
aba5acdf	364	fprintf(stderr, "Dump terminated\n");
11656f1b	365	return 1;
aba5acdf SH	366	}
aba5acdf SH	367
aba5acdf SH	368	return 0;
	369	}
	370
	371	int do_qdisc(int argc, char **argv)
	372	{
	373	if (argc < 1)
	374	return tc_qdisc_list(0, NULL);
	375	if (matches(*argv, "add") == 0)
	376	return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_EXCL\|NLM_F_CREATE, argc-1, argv+1);
	377	if (matches(*argv, "change") == 0)
	378	return tc_qdisc_modify(RTM_NEWQDISC, 0, argc-1, argv+1);
	379	if (matches(*argv, "replace") == 0)
	380	return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_CREATE\|NLM_F_REPLACE, argc-1, argv+1);
	381	if (matches(*argv, "link") == 0)
	382	return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_REPLACE, argc-1, argv+1);
	383	if (matches(*argv, "delete") == 0)
	384	return tc_qdisc_modify(RTM_DELQDISC, 0, argc-1, argv+1);
	385	#if 0
	386	if (matches(*argv, "get") == 0)
	387	return tc_qdisc_get(RTM_GETQDISC, 0, argc-1, argv+1);
	388	#endif
	389	if (matches(argv, "list") == 0 \|\| matches(argv, "show") == 0
	390	\|\| matches(*argv, "lst") == 0)
	391	return tc_qdisc_list(argc-1, argv+1);
e5d179d8	392	if (matches(*argv, "help") == 0) {
aba5acdf	393	usage();
e5d179d8	394	return 0;
32a121cb	395	}
aba5acdf SH	396	fprintf(stderr, "Command \"%s\" is unknown, try \"tc qdisc help\".\n", *argv);
	397	return -1;
	398	}