tc.c

 1// SPDX-License-Identifier: GPL-2.0
 2#include <stdio.h>
 3#include <string.h>
 4
 5#include <ynl.h>
 6
 7#include <net/if.h>
 8
 9#include "tc-user.h"
10
11static void tc_qdisc_print(struct tc_getqdisc_rsp *q)
12{
13	char ifname[IF_NAMESIZE];
14	const char *name;
15
16	name = if_indextoname(q->_hdr.tcm_ifindex, ifname);
17	if (name)
18		printf("%16s: ", name);
19
20	if (q->_len.kind) {
21		printf("%s  ", q->kind);
22
23		if (q->options._present.fq_codel) {
24			struct tc_fq_codel_attrs *fq_codel;
25			struct tc_fq_codel_xstats *stats;
26
27			fq_codel = &q->options.fq_codel;
28			stats = q->stats2.app.fq_codel;
29
30			if (fq_codel->_present.limit)
31				printf("limit: %dp ", fq_codel->limit);
32			if (fq_codel->_present.target)
33				printf("target: %dms ",
34				       (fq_codel->target + 500) / 1000);
35			if (q->stats2.app._len.fq_codel)
36				printf("new_flow_cnt: %d ",
37				       stats->qdisc_stats.new_flow_count);
38		}
39	}
40
41	printf("\n");
42}
43
44int main(int argc, char **argv)
45{
46	struct tc_getqdisc_req_dump *req;
47	struct tc_getqdisc_list *rsp;
48	struct ynl_error yerr;
49	struct ynl_sock *ys;
50
51	ys = ynl_sock_create(&ynl_tc_family, &yerr);
52	if (!ys) {
53		fprintf(stderr, "YNL: %s\n", yerr.msg);
54		return 1;
55	}
56
57	req = tc_getqdisc_req_dump_alloc();
58	if (!req)
59		goto err_destroy;
60
61	rsp = tc_getqdisc_dump(ys, req);
62	tc_getqdisc_req_dump_free(req);
63	if (!rsp)
64		goto err_close;
65
66	if (ynl_dump_empty(rsp))
67		fprintf(stderr, "Error: no addresses reported\n");
68	ynl_dump_foreach(rsp, qdisc)
69		tc_qdisc_print(qdisc);
70	tc_getqdisc_list_free(rsp);
71
72	ynl_sock_destroy(ys);
73	return 0;
74
75err_close:
76	fprintf(stderr, "YNL: %s\n", ys->err.msg);
77err_destroy:
78	ynl_sock_destroy(ys);
79	return 2;
80}