libnl 3.5.0

nl-link-stats.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * src/nl-link-stats.c Retrieve link statistics
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation version 2.1
8 * of the License.
9 *
10 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
11 */
12
13 #include <netlink/cli/utils.h>
14 #include <netlink/cli/link.h>
15
16 #include <linux/netlink.h>
17
18 static void print_usage(void)
19 {
20 printf(
21 "Usage: nl-link-stats [OPTION]... [LINK] [ListOfStats]\n"
22 "\n"
23 "Options\n"
24 " -l, --list List available statistic names\n"
25 " -h, --help Show this help\n"
26 " -v, --version Show versioning information\n"
27 "\n"
28 "Link Options\n"
29 " -n, --name=NAME link name\n"
30 " -i, --index=NUM interface index\n"
31 );
32 exit(0);
33 }
34
35 static void list_stat_names(void)
36 {
37 char buf[64];
38 int i;
39
40 for (i = 0; i <= RTNL_LINK_STATS_MAX; i++)
41 printf("%s\n", rtnl_link_stat2str(i, buf, sizeof(buf)));
42
43 exit(0);
44 }
45
46 static int gargc;
47
48 static void dump_stat(struct rtnl_link *link, int id)
49 {
50 uint64_t st = rtnl_link_get_stat(link, id);
51 char buf[64];
52
53 printf("%s.%s %" PRIu64 "\n", rtnl_link_get_name(link),
54 rtnl_link_stat2str(id, buf, sizeof(buf)), st);
55 }
56
57 static void dump_stats(struct nl_object *obj, void *arg)
58 {
59 struct rtnl_link *link = (struct rtnl_link *) obj;
60 char **argv = arg;
61
62 if (optind >= gargc) {
63 int i;
64
65 for (i = 0; i <= RTNL_LINK_STATS_MAX; i++)
66 dump_stat(link, i);
67 } else {
68 while (optind < gargc) {
69 int id = rtnl_link_str2stat(argv[optind]);
70
71 if (id < 0)
72 fprintf(stderr, "Warning: Unknown statistic "
73 "\"%s\"\n", argv[optind]);
74 else
75 dump_stat(link, id);
76
77 optind++;
78 }
79 }
80 }
81
82 int main(int argc, char *argv[])
83 {
84 struct nl_sock *sock;
85 struct nl_cache *link_cache;
86 struct rtnl_link *link;
87
88 sock = nl_cli_alloc_socket();
89 nl_cli_connect(sock, NETLINK_ROUTE);
90 link_cache = nl_cli_link_alloc_cache(sock);
91 link = nl_cli_link_alloc();
92
93 for (;;) {
94 int c, optidx = 0;
95 static struct option long_opts[] = {
96 { "list", 0, 0, 'l' },
97 { "help", 0, 0, 'h' },
98 { "version", 0, 0, 'v' },
99 { "name", 1, 0, 'n' },
100 { "index", 1, 0, 'i' },
101 { 0, 0, 0, 0 }
102 };
103
104 c = getopt_long(argc, argv, "lhvn:i:", long_opts, &optidx);
105 if (c == -1)
106 break;
107
108 switch (c) {
109 case 'l': list_stat_names(); break;
110 case 'h': print_usage(); break;
111 case 'v': nl_cli_print_version(); break;
112 case 'n': nl_cli_link_parse_name(link, optarg); break;
113 case 'i': nl_cli_link_parse_ifindex(link, optarg); break;
114 }
115 }
116
117 gargc = argc;
118 nl_cache_foreach_filter(link_cache, OBJ_CAST(link), dump_stats, argv);
119
120 return 0;
121 }
122
rtnl_link
Link object.
nl_cache_foreach_filter
void nl_cache_foreach_filter(struct nl_cache *cache, struct nl_object *filter, void(*cb)(struct nl_object *, void *), void *arg)
Call a callback on each element of the cache (filtered).
Definition: cache.c:1283
rtnl_link_get_stat
uint64_t rtnl_link_get_stat(struct rtnl_link *link, rtnl_link_stat_id_t id)
Return value of link statistics counter.
Definition: link.c:2526
rtnl_link_get_name
char * rtnl_link_get_name(struct rtnl_link *link)
Return name of link object.
Definition: link.c:1973