libnl  3.7.0
nl-link-stats.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3  * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
4  */
5 
6 #include <netlink/cli/utils.h>
7 #include <netlink/cli/link.h>
8 
9 #include <linux/netlink.h>
10 
11 static void print_usage(void)
12 {
13  printf(
14  "Usage: nl-link-stats [OPTION]... [LINK] [ListOfStats]\n"
15  "\n"
16  "Options\n"
17  " -l, --list List available statistic names\n"
18  " -h, --help Show this help\n"
19  " -v, --version Show versioning information\n"
20  "\n"
21  "Link Options\n"
22  " -n, --name=NAME link name\n"
23  " -i, --index=NUM interface index\n"
24  );
25  exit(0);
26 }
27 
28 static void list_stat_names(void)
29 {
30  char buf[64];
31  int i;
32 
33  for (i = 0; i <= RTNL_LINK_STATS_MAX; i++)
34  printf("%s\n", rtnl_link_stat2str(i, buf, sizeof(buf)));
35 
36  exit(0);
37 }
38 
39 static int gargc;
40 
41 static void dump_stat(struct rtnl_link *link, int id)
42 {
43  uint64_t st = rtnl_link_get_stat(link, id);
44  char buf[64];
45 
46  printf("%s.%s %" PRIu64 "\n", rtnl_link_get_name(link),
47  rtnl_link_stat2str(id, buf, sizeof(buf)), st);
48 }
49 
50 static void dump_stats(struct nl_object *obj, void *arg)
51 {
52  struct rtnl_link *link = (struct rtnl_link *) obj;
53  char **argv = arg;
54 
55  if (optind >= gargc) {
56  int i;
57 
58  for (i = 0; i <= RTNL_LINK_STATS_MAX; i++)
59  dump_stat(link, i);
60  } else {
61  while (optind < gargc) {
62  int id = rtnl_link_str2stat(argv[optind]);
63 
64  if (id < 0)
65  fprintf(stderr, "Warning: Unknown statistic "
66  "\"%s\"\n", argv[optind]);
67  else
68  dump_stat(link, id);
69 
70  optind++;
71  }
72  }
73 }
74 
75 int main(int argc, char *argv[])
76 {
77  struct nl_sock *sock;
78  struct nl_cache *link_cache;
79  struct rtnl_link *link;
80 
81  sock = nl_cli_alloc_socket();
82  nl_cli_connect(sock, NETLINK_ROUTE);
83  link_cache = nl_cli_link_alloc_cache(sock);
84  link = nl_cli_link_alloc();
85 
86  for (;;) {
87  int c, optidx = 0;
88  static struct option long_opts[] = {
89  { "list", 0, 0, 'l' },
90  { "help", 0, 0, 'h' },
91  { "version", 0, 0, 'v' },
92  { "name", 1, 0, 'n' },
93  { "index", 1, 0, 'i' },
94  { 0, 0, 0, 0 }
95  };
96 
97  c = getopt_long(argc, argv, "lhvn:i:", long_opts, &optidx);
98  if (c == -1)
99  break;
100 
101  switch (c) {
102  case 'l': list_stat_names(); break;
103  case 'h': print_usage(); break;
104  case 'v': nl_cli_print_version(); break;
105  case 'n': nl_cli_link_parse_name(link, optarg); break;
106  case 'i': nl_cli_link_parse_ifindex(link, optarg); break;
107  }
108  }
109 
110  gargc = argc;
111  nl_cache_foreach_filter(link_cache, OBJ_CAST(link), dump_stats, argv);
112 
113  return 0;
114 }
115 
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:1294