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

libnl 3.12.0

nl-neigh-add.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 int quiet = 0;
15
16static void print_usage(void)
17{
18 printf(
19 "Usage: nl-neigh-add [OPTION]... NEIGHBOUR\n"
20 "\n"
21 "Options\n"
22 " --update-only Do not create neighbour, updates exclusively\n"
23 " --create-only Do not update neighbour if it exists already.\n"
24 " -q, --quiet Do not print informal notifications\n"
25 " -h, --help Show this help\n"
26 " -v, --version Show versioning information\n"
27 "\n"
28 "Neighbour Options\n"
29 " -a, --addr=ADDR Destination address of neighbour\n"
30 " -l, --lladdr=ADDR Link layer address of neighbour\n"
31 " -d, --dev=DEV Device the neighbour is connected to\n"
32 " --state=STATE Neighbour state, (default = permanent)\n"
33 "\n"
34 "Example\n"
35 " nl-neigh-add --create-only --addr=10.0.0.1 --dev=eth0 \\\n"
36 " --lladdr=AA:BB:CC:DD:EE:FF\n"
37 );
38
39 exit(0);
40}
41
42int main(int argc, char *argv[])
43{
44 struct nl_sock *sock;
45 struct rtnl_neigh *neigh;
46 struct nl_cache *link_cache;
47 struct nl_dump_params dp = {
48 .dp_type = NL_DUMP_LINE,
49 .dp_fd = stdout,
50 };
51 int err, ok = 0, nlflags = NLM_F_REPLACE | NLM_F_CREATE;
52
53 sock = nl_cli_alloc_socket();
54 nl_cli_connect(sock, NETLINK_ROUTE);
55 link_cache = nl_cli_link_alloc_cache(sock);
56 neigh = nl_cli_neigh_alloc();
57
58 for (;;) {
59 int c, optidx = 0;
60 enum {
61 ARG_UPDATE_ONLY = 257,
62 ARG_CREATE_ONLY = 258,
63 ARG_STATE,
64 };
65 static struct option long_opts[] = {
66 { "update-only", 0, 0, ARG_UPDATE_ONLY },
67 { "create-only", 0, 0, ARG_CREATE_ONLY },
68 { "quiet", 0, 0, 'q' },
69 { "help", 0, 0, 'h' },
70 { "version", 0, 0, 'v' },
71 { "addr", 1, 0, 'a' },
72 { "lladdr", 1, 0, 'l' },
73 { "dev", 1, 0, 'd' },
74 { "state", 1, 0, ARG_STATE },
75 { 0, 0, 0, 0 }
76 };
77
78 c = getopt_long(argc, argv, "qhva:l:d:", long_opts, &optidx);
79 if (c == -1)
80 break;
81
82 switch (c) {
83 case ARG_UPDATE_ONLY: nlflags &= ~NLM_F_CREATE; break;
84 case ARG_CREATE_ONLY: nlflags |= NLM_F_EXCL; break;
85 case 'q': quiet = 1; break;
86 case 'h': print_usage(); break;
87 case 'v': nl_cli_print_version(); break;
88 case 'a': ok++; nl_cli_neigh_parse_dst(neigh, optarg); break;
89 case 'l': nl_cli_neigh_parse_lladdr(neigh, optarg); break;
90 case 'd': nl_cli_neigh_parse_dev(neigh, link_cache, optarg); break;
91 case ARG_STATE: nl_cli_neigh_parse_state(neigh, optarg); break;
92 }
93 }
94
95 if (!ok)
96 print_usage();
97
98 if ((err = rtnl_neigh_add(sock, neigh, nlflags)) < 0)
99 nl_cli_fatal(err, "Unable to add neighbour: %s",
100 nl_geterror(err));
101
102 if (!quiet) {
103 printf("Added ");
104 nl_object_dump(OBJ_CAST(neigh), &dp);
105 }
106
107 return 0;
108}
nl_cli_fatal
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition utils.c:71
rtnl_neigh_add
int rtnl_neigh_add(struct nl_sock *sk, struct rtnl_neigh *tmpl, int flags)
Add a new neighbour.
Definition neigh.c:842
nl_object_dump
void nl_object_dump(struct nl_object *obj, struct nl_dump_params *params)
Dump this object according to the specified parameters.
Definition object.c:294
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