libnl  3.2.24-rc1
nl-cls-list.c
1 /*
2  * src/nl-cls-list.c List classifiers
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation version 2.1
7  * of the License.
8  *
9  * Copyright (c) 2008-2010 Thomas Graf <tgraf@suug.ch>
10  */
11 
12 #include <netlink/cli/utils.h>
13 #include <netlink/cli/tc.h>
14 #include <netlink/cli/cls.h>
15 #include <netlink/cli/link.h>
16 
17 static struct nl_sock *sock;
18 
19 static struct nl_dump_params params = {
21 };
22 
23 static void print_usage(void)
24 {
25  printf(
26 "Usage: nl-cls-list [OPTION]...\n"
27 "\n"
28 "OPTIONS\n"
29 " --details Show details\n"
30 " --stats Show statistics\n"
31 " -h, --help Show this help\n"
32 " -v, --version Show versioning information\n"
33 "\n"
34 " -d, --dev=DEV Device the classifier is attached to. (default: all)\n"
35 " -p, --parent=ID Identifier of parent class.\n"
36 " -i, --id=ID Identifier.\n"
37 " -k, --kind=NAME Kind of classifier (e.g. basic, u32, fw)\n"
38 " --protocol=PROTO Protocol to match (default: all)\n"
39 " --prio=PRIO Priority (default: 0)\n"
40 "\n"
41 "EXAMPLE\n"
42 " # Display statistics of all classes on eth0\n"
43 " $ nl-cls-list --stats --dev=eth0\n"
44 "\n"
45  );
46  exit(0);
47 }
48 
49 static void __dump_link(int ifindex, struct rtnl_cls *filter)
50 {
51  struct nl_cache *cache;
52  uint32_t parent = rtnl_tc_get_parent((struct rtnl_tc *) filter);
53 
54  cache = nl_cli_cls_alloc_cache(sock, ifindex, parent);
55  nl_cache_dump_filter(cache, &params, OBJ_CAST(filter));
56  nl_cache_free(cache);
57 }
58 
59 static void dump_link(struct nl_object *obj, void *arg)
60 {
61  struct rtnl_link *link = nl_object_priv(obj);
62 
63  __dump_link(rtnl_link_get_ifindex(link), arg);
64 }
65 
66 int main(int argc, char *argv[])
67 {
68  struct rtnl_cls *cls;
69  struct rtnl_tc *tc;
70  struct nl_cache *link_cache;
71  int ifindex;
72 
73  sock = nl_cli_alloc_socket();
74  nl_cli_connect(sock, NETLINK_ROUTE);
75  link_cache = nl_cli_link_alloc_cache(sock);
76  cls = nl_cli_cls_alloc();
77  tc = (struct rtnl_tc *) cls;
78 
79  params.dp_fd = stdout;
80 
81  for (;;) {
82  int c, optidx = 0;
83  enum {
84  ARG_DETAILS = 257,
85  ARG_STATS = 258,
86  ARG_PROTO,
87  ARG_PRIO,
88  };
89  static struct option long_opts[] = {
90  { "details", 0, 0, ARG_DETAILS },
91  { "stats", 0, 0, ARG_STATS },
92  { "help", 0, 0, 'h' },
93  { "version", 0, 0, 'v' },
94  { "dev", 1, 0, 'd' },
95  { "parent", 1, 0, 'p' },
96  { "id", 1, 0, 'i' },
97  { "kind", 1, 0, 'k' },
98  { "proto", 1, 0, ARG_PROTO },
99  { "prio", 1, 0, ARG_PRIO },
100  { 0, 0, 0, 0 }
101  };
102 
103  c = getopt_long(argc, argv, "hvd:p:i:k:", long_opts, &optidx);
104  if (c == -1)
105  break;
106 
107  switch (c) {
108  case ARG_DETAILS: params.dp_type = NL_DUMP_DETAILS; break;
109  case ARG_STATS: params.dp_type = NL_DUMP_STATS; break;
110  case 'h': print_usage(); break;
111  case 'v': nl_cli_print_version(); break;
112  case 'd': nl_cli_tc_parse_dev(tc, link_cache, optarg); break;
113  case 'p': nl_cli_tc_parse_parent(tc, optarg); break;
114  case 'i': nl_cli_tc_parse_handle(tc, optarg, 0); break;
115  case 'k': nl_cli_tc_parse_kind(tc, optarg); break;
116  case ARG_PROTO: nl_cli_cls_parse_proto(cls, optarg); break;
117  case ARG_PRIO:
118  rtnl_cls_set_prio(cls, nl_cli_parse_u32(optarg));
119  break;
120  }
121  }
122 
123  if ((ifindex = rtnl_tc_get_ifindex(tc)))
124  __dump_link(ifindex, cls);
125  else
126  nl_cache_foreach(link_cache, dump_link, cls);
127 
128  return 0;
129 }