[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;
	}

	open_json_object(NULL);

	if (n->nlmsg_type == RTM_DELQDISC)
		print_bool(PRINT_ANY, "deleted", "deleted ", true);

	if (n->nlmsg_type == RTM_NEWQDISC &&
			(n->nlmsg_flags & NLM_F_CREATE) &&
			(n->nlmsg_flags & NLM_F_REPLACE))
		print_bool(PRINT_ANY, "replaced", "replaced ", true);

	if (n->nlmsg_type == RTM_NEWQDISC &&
			(n->nlmsg_flags & NLM_F_CREATE) &&
			(n->nlmsg_flags & NLM_F_EXCL))
		print_bool(PRINT_ANY, "added", "added ", true);

	print_string(PRINT_ANY, "kind", "qdisc %s",
		     rta_getattr_str(tb[TCA_KIND]));
	sprintf(abuf, "%x:", t->tcm_handle >> 16);
	print_string(PRINT_ANY, "handle", " %s", abuf);
	if (show_raw) {
		sprintf(abuf, "[%08x]", t->tcm_handle);
		print_string(PRINT_FP, NULL, "%s", abuf);
	}
	print_string(PRINT_FP, NULL, " ", NULL);

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

	if (t->tcm_parent == TC_H_ROOT)
		print_bool(PRINT_ANY, "root", "root ", true);
	else if (t->tcm_parent) {
		print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
		print_string(PRINT_ANY, "parent", "parent %s ", abuf);
	}

	if (t->tcm_info != 1)
		print_uint(PRINT_ANY, "refcnt", "refcnt %u ", 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]));

	open_json_object("options");
	if (tb[TCA_OPTIONS]) {
		if (q)
			q->print_qopt(q, fp, tb[TCA_OPTIONS]);
		else
			print_string(PRINT_FP, NULL,
				     "[cannot parse qdisc parameters]", NULL);
	}
	close_json_object();

	print_string(PRINT_FP, NULL, "\n", NULL);

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

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

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

		if (q && xstats && q->print_xstats) {
			q->print_xstats(q, fp, xstats);
			print_string(PRINT_FP, NULL, "\n", NULL);
		}
	}
	close_json_object();
	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;
	}

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

	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
c91d262f JP	230	open_json_object(NULL);
c91d262f JP	231
aba5acdf	232	if (n->nlmsg_type == RTM_DELQDISC)
c91d262f	233	print_bool(PRINT_ANY, "deleted", "deleted ", true);
aba5acdf	234
274b63ae RM	235	if (n->nlmsg_type == RTM_NEWQDISC &&
	236	(n->nlmsg_flags & NLM_F_CREATE) &&
	237	(n->nlmsg_flags & NLM_F_REPLACE))
c91d262f	238	print_bool(PRINT_ANY, "replaced", "replaced ", true);
274b63ae RM	239
	240	if (n->nlmsg_type == RTM_NEWQDISC &&
	241	(n->nlmsg_flags & NLM_F_CREATE) &&
	242	(n->nlmsg_flags & NLM_F_EXCL))
c91d262f JP	243	print_bool(PRINT_ANY, "added", "added ", true);
	244
	245	print_string(PRINT_ANY, "kind", "qdisc %s",
	246	rta_getattr_str(tb[TCA_KIND]));
	247	sprintf(abuf, "%x:", t->tcm_handle >> 16);
	248	print_string(PRINT_ANY, "handle", " %s", abuf);
	249	if (show_raw) {
	250	sprintf(abuf, "[%08x]", t->tcm_handle);
	251	print_string(PRINT_FP, NULL, "%s", abuf);
	252	}
	253	print_string(PRINT_FP, NULL, " ", NULL);
d42e1444	254
aba5acdf	255	if (filter_ifindex == 0)
c91d262f JP	256	print_string(PRINT_ANY, "dev", "dev %s ",
c91d262f JP	257	ll_index_to_name(t->tcm_ifindex));
b932e6f3	258
aba5acdf	259	if (t->tcm_parent == TC_H_ROOT)
c91d262f	260	print_bool(PRINT_ANY, "root", "root ", true);
aba5acdf SH	261	else if (t->tcm_parent) {
aba5acdf SH	262	print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
c91d262f	263	print_string(PRINT_ANY, "parent", "parent %s ", abuf);
aba5acdf	264	}
b932e6f3 SH	265
b932e6f3 SH	266	if (t->tcm_info != 1)
c91d262f	267	print_uint(PRINT_ANY, "refcnt", "refcnt %u ", t->tcm_info);
ae665a52	268
b932e6f3 SH	269	/* pfifo_fast is generic enough to warrant the hardcoding --JHS */
b932e6f3 SH	270	if (strcmp("pfifo_fast", RTA_DATA(tb[TCA_KIND])) == 0)
2373fde9 SH	271	q = get_qdisc_kind("prio");
	272	else
	273	q = get_qdisc_kind(RTA_DATA(tb[TCA_KIND]));
ae665a52	274
c91d262f	275	open_json_object("options");
aba5acdf SH	276	if (tb[TCA_OPTIONS]) {
	277	if (q)
	278	q->print_qopt(q, fp, tb[TCA_OPTIONS]);
	279	else
c91d262f JP	280	print_string(PRINT_FP, NULL,
c91d262f JP	281	"[cannot parse qdisc parameters]", NULL);
aba5acdf	282	}
c91d262f JP	283	close_json_object();
	284
	285	print_string(PRINT_FP, NULL, "\n", NULL);
b932e6f3	286
839c8456 JK	287	if (show_details && tb[TCA_STAB]) {
839c8456 JK	288	print_size_table(fp, " ", tb[TCA_STAB]);
c91d262f	289	print_string(PRINT_FP, NULL, "\n", NULL);
839c8456	290	}
b932e6f3	291
aba5acdf	292	if (show_stats) {
e5879dc6	293	struct rtattr *xstats = NULL;
	294
	295	if (tb[TCA_STATS] \|\| tb[TCA_STATS2] \|\| tb[TCA_XSTATS]) {
	296	print_tcstats_attr(fp, tb, " ", &xstats);
c91d262f	297	print_string(PRINT_FP, NULL, "\n", NULL);
aba5acdf	298	}
649b0755	299
e5879dc6	300	if (q && xstats && q->print_xstats) {
e5879dc6	301	q->print_xstats(q, fp, xstats);
c91d262f	302	print_string(PRINT_FP, NULL, "\n", NULL);
aba5acdf SH	303	}
aba5acdf SH	304	}
c91d262f	305	close_json_object();
aba5acdf SH	306	fflush(fp);
	307	return 0;
	308	}
	309
d1f28cf1	310	static int tc_qdisc_list(int argc, char **argv)
aba5acdf	311	{
d17b136f	312	struct tcmsg t = { .tcm_family = AF_UNSPEC };
b317557f	313	char d[IFNAMSIZ] = {};
7c581a12	314	bool dump_invisible = false;
ae665a52	315
aba5acdf SH	316	while (argc > 0) {
	317	if (strcmp(*argv, "dev") == 0) {
	318	NEXT_ARG();
	319	strncpy(d, *argv, sizeof(d)-1);
32a121cb	320	} else if (strcmp(*argv, "ingress") == 0 \|\|
8f9afdd5	321	strcmp(*argv, "clsact") == 0) {
b932e6f3 SH	322	if (t.tcm_parent) {
	323	fprintf(stderr, "Duplicate parent ID\n");
	324	usage();
	325	}
	326	t.tcm_parent = TC_H_INGRESS;
aba5acdf SH	327	} else if (matches(*argv, "help") == 0) {
aba5acdf SH	328	usage();
7c581a12 JK	329	} else if (strcmp(*argv, "invisible") == 0) {
7c581a12 JK	330	dump_invisible = true;
aba5acdf SH	331	} else {
	332	fprintf(stderr, "What is \"%s\"? Try \"tc qdisc help\".\n", *argv);
	333	return -1;
	334	}
	335
	336	argc--; argv++;
	337	}
	338
3d0b7439	339	ll_init_map(&rth);
aba5acdf SH	340
aba5acdf SH	341	if (d[0]) {
b932e6f3 SH	342	t.tcm_ifindex = ll_name_to_index(d);
b932e6f3 SH	343	if (t.tcm_ifindex == 0) {
aba5acdf	344	fprintf(stderr, "Cannot find device \"%s\"\n", d);
11656f1b	345	return 1;
aba5acdf SH	346	}
	347	filter_ifindex = t.tcm_ifindex;
	348	}
	349
7c581a12 JK	350	if (dump_invisible) {
	351	struct {
	352	struct nlmsghdr n;
	353	struct tcmsg t;
	354	char buf[256];
	355	} req = {
	356	.n.nlmsg_type = RTM_GETQDISC,
	357	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)),
	358	};
	359
	360	req.t.tcm_family = AF_UNSPEC;
	361
	362	addattr(&req.n, 256, TCA_DUMP_INVISIBLE);
	363	if (rtnl_dump_request_n(&rth, &req.n) < 0) {
	364	perror("Cannot send dump request");
	365	return 1;
	366	}
	367
	368	} else if (rtnl_dump_request(&rth, RTM_GETQDISC, &t, sizeof(t)) < 0) {
aba5acdf	369	perror("Cannot send dump request");
11656f1b	370	return 1;
aba5acdf SH	371	}
aba5acdf SH	372
c91d262f	373	new_json_obj(json);
3d0b7439	374	if (rtnl_dump_filter(&rth, print_qdisc, stdout) < 0) {
aba5acdf	375	fprintf(stderr, "Dump terminated\n");
11656f1b	376	return 1;
aba5acdf	377	}
c91d262f	378	delete_json_obj();
aba5acdf	379
aba5acdf SH	380	return 0;
	381	}
	382
	383	int do_qdisc(int argc, char **argv)
	384	{
	385	if (argc < 1)
	386	return tc_qdisc_list(0, NULL);
	387	if (matches(*argv, "add") == 0)
	388	return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_EXCL\|NLM_F_CREATE, argc-1, argv+1);
	389	if (matches(*argv, "change") == 0)
	390	return tc_qdisc_modify(RTM_NEWQDISC, 0, argc-1, argv+1);
	391	if (matches(*argv, "replace") == 0)
	392	return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_CREATE\|NLM_F_REPLACE, argc-1, argv+1);
	393	if (matches(*argv, "link") == 0)
	394	return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_REPLACE, argc-1, argv+1);
	395	if (matches(*argv, "delete") == 0)
	396	return tc_qdisc_modify(RTM_DELQDISC, 0, argc-1, argv+1);
	397	#if 0
	398	if (matches(*argv, "get") == 0)
	399	return tc_qdisc_get(RTM_GETQDISC, 0, argc-1, argv+1);
	400	#endif
	401	if (matches(argv, "list") == 0 \|\| matches(argv, "show") == 0
	402	\|\| matches(*argv, "lst") == 0)
	403	return tc_qdisc_list(argc-1, argv+1);
e5d179d8	404	if (matches(*argv, "help") == 0) {
aba5acdf	405	usage();
e5d179d8	406	return 0;
32a121cb	407	}
aba5acdf SH	408	fprintf(stderr, "Command \"%s\" is unknown, try \"tc qdisc help\".\n", *argv);
	409	return -1;
	410	}