libnl: /data/src/libnl3/src/nl-neigh-list.c Source File

libnl 3.7.0

nl-neigh-list.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/neigh.h>
8 #include <netlink/cli/link.h>
9
10 #include <linux/netlink.h>
11
12 static void print_usage(void)
13 {
14 printf(
15 "Usage: nl-neigh-list [OPTION]... [NEIGHBOUR]\n"
16 "\n"
17 "Options\n"
18 " -f, --format=TYPE Output format { brief | details | stats }\n"
19 " -h, --help Show this help\n"
20 " -v, --version Show versioning information\n"
21 "\n"
22 "Neighbour Options\n"
23 " -a, --addr=ADDR Destination address of neighbour\n"
24 " -l, --lladdr=ADDR Link layer address of neighbour\n"
25 " -d, --dev=DEV Device the neighbour is connected to\n"
26 " --family=FAMILY Destination address family\n"
27 " --state=STATE Neighbour state, (default = permanent)\n"
28 );
29 exit(0);
30 }
31
32 int main(int argc, char *argv[])
33 {
34 struct nl_sock *sock;
35 struct rtnl_neigh *neigh;
36 struct nl_cache *link_cache, *neigh_cache;
37 struct nl_dump_params params = {
38 .dp_type = NL_DUMP_LINE,
39 .dp_fd = stdout,
40 };
41
42 sock = nl_cli_alloc_socket();
43 nl_cli_connect(sock, NETLINK_ROUTE);
44 link_cache = nl_cli_link_alloc_cache_flags(sock, NL_CACHE_AF_ITER);
45 neigh_cache = nl_cli_neigh_alloc_cache(sock);
46 neigh = nl_cli_neigh_alloc();
47
48 for (;;) {
49 int c, optidx = 0;
50 enum {
51 ARG_FAMILY = 257,
52 ARG_STATE = 258,
53 };
54 static struct option long_opts[] = {
55 { "format", 1, 0, 'f' },
56 { "help", 0, 0, 'h' },
57 { "version", 0, 0, 'v' },
58 { "addr", 1, 0, 'a' },
59 { "lladdr", 1, 0, 'l' },
60 { "dev", 1, 0, 'd' },
61 { "family", 1, 0, ARG_FAMILY },
62 { "state", 1, 0, ARG_STATE },
63 { 0, 0, 0, 0 }
64 };
65
66 c = getopt_long(argc, argv, "f:hva:l:d:", long_opts, &optidx);
67 if (c == -1)
68 break;
69
70 switch (c) {
71 case 'f': params.dp_type = nl_cli_parse_dumptype(optarg); break;
72 case 'h': print_usage(); break;
73 case 'v': nl_cli_print_version(); break;
74 case 'a': nl_cli_neigh_parse_dst(neigh, optarg); break;
75 case 'l': nl_cli_neigh_parse_lladdr(neigh, optarg); break;
76 case 'd': nl_cli_neigh_parse_dev(neigh, link_cache, optarg); break;
77 case ARG_FAMILY: nl_cli_neigh_parse_family(neigh, optarg); break;
78 case ARG_STATE: nl_cli_neigh_parse_state(neigh, optarg); break;
79 }
80 }
81
82 nl_cache_dump_filter(neigh_cache, &params, OBJ_CAST(neigh));
83
84 rtnl_neigh_put(neigh);
85 nl_cache_put(neigh_cache);
86 nl_cache_put(link_cache);
87 nl_socket_free(sock);
88
89 return 0;
90 }
nl_cache_dump_filter
void nl_cache_dump_filter(struct nl_cache *cache, struct nl_dump_params *params, struct nl_object *filter)
Dump all elements of a cache (filtered).
Definition: cache.c:1211
NL_CACHE_AF_ITER
#define NL_CACHE_AF_ITER
Explicitely iterate over all address families when updating the cache.
Definition: cache.h:39
nl_socket_free
void nl_socket_free(struct nl_sock *sk)
Free a netlink socket.
Definition: socket.c:238
NL_DUMP_LINE
@ NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:16
nl_dump_params
Dumping parameters.
Definition: types.h:28
nl_dump_params::dp_type
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:32