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

libnl 3.12.0

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 "nl-default.h"
7
8#include <linux/netlink.h>
9
10#include <netlink/cli/utils.h>
11#include <netlink/cli/neigh.h>
12#include <netlink/cli/link.h>
13
14static void print_usage(void)
15{
16 printf(
17 "Usage: nl-neigh-list [OPTION]... [NEIGHBOUR]\n"
18 "\n"
19 "Options\n"
20 " -f, --format=TYPE Output format { brief | details | stats }\n"
21 " -h, --help Show this help\n"
22 " -v, --version Show versioning information\n"
23 "\n"
24 "Neighbour Options\n"
25 " -a, --addr=ADDR Destination address of neighbour\n"
26 " -l, --lladdr=ADDR Link layer address of neighbour\n"
27 " -d, --dev=DEV Device the neighbour is connected to\n"
28 " --family=FAMILY Destination address family\n"
29 " --state=STATE Neighbour state, (default = permanent)\n"
30 );
31 exit(0);
32}
33
34int main(int argc, char *argv[])
35{
36 struct nl_sock *sock;
37 struct rtnl_neigh *neigh;
38 struct nl_cache *link_cache, *neigh_cache;
39 struct nl_dump_params params = {
40 .dp_type = NL_DUMP_LINE,
41 .dp_fd = stdout,
42 };
43
44 sock = nl_cli_alloc_socket();
45 nl_cli_connect(sock, NETLINK_ROUTE);
46 link_cache = nl_cli_link_alloc_cache_flags(sock, NL_CACHE_AF_ITER);
47 neigh_cache = nl_cli_neigh_alloc_cache(sock);
48 neigh = nl_cli_neigh_alloc();
49
50 for (;;) {
51 int c, optidx = 0;
52 enum {
53 ARG_FAMILY = 257,
54 ARG_STATE = 258,
55 };
56 static struct option long_opts[] = {
57 { "format", 1, 0, 'f' },
58 { "help", 0, 0, 'h' },
59 { "version", 0, 0, 'v' },
60 { "addr", 1, 0, 'a' },
61 { "lladdr", 1, 0, 'l' },
62 { "dev", 1, 0, 'd' },
63 { "family", 1, 0, ARG_FAMILY },
64 { "state", 1, 0, ARG_STATE },
65 { 0, 0, 0, 0 }
66 };
67
68 c = getopt_long(argc, argv, "f:hva:l:d:", long_opts, &optidx);
69 if (c == -1)
70 break;
71
72 switch (c) {
73 case 'f': params.dp_type = nl_cli_parse_dumptype(optarg); break;
74 case 'h': print_usage(); break;
75 case 'v': nl_cli_print_version(); break;
76 case 'a': nl_cli_neigh_parse_dst(neigh, optarg); break;
77 case 'l': nl_cli_neigh_parse_lladdr(neigh, optarg); break;
78 case 'd': nl_cli_neigh_parse_dev(neigh, link_cache, optarg); break;
79 case ARG_FAMILY: nl_cli_neigh_parse_family(neigh, optarg); break;
80 case ARG_STATE: nl_cli_neigh_parse_state(neigh, optarg); break;
81 }
82 }
83
84 nl_cache_dump_filter(neigh_cache, &params, OBJ_CAST(neigh));
85
86 rtnl_neigh_put(neigh);
87 nl_cache_put(neigh_cache);
88 nl_cache_put(link_cache);
89 nl_socket_free(sock);
90
91 return 0;
92}
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:1219
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:265
NL_DUMP_LINE
@ NL_DUMP_LINE
Dump object briefly on one line.
Definition types.h:20
nl_dump_params
Dumping parameters.
Definition types.h:32