libnl 3.5.0

nl-neigh-add.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * src/ nl-neigh-add.c Add a neighbour
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation version 2.1
8 * of the License.
9 *
10 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
11 */
12
13 #include <netlink/cli/utils.h>
14 #include <netlink/cli/neigh.h>
15 #include <netlink/cli/link.h>
16
17 #include <linux/netlink.h>
18
19 static int quiet = 0;
20
21 static void print_usage(void)
22 {
23 printf(
24 "Usage: nl-neigh-add [OPTION]... NEIGHBOUR\n"
25 "\n"
26 "Options\n"
27 " --update-only Do not create neighbour, updates exclusively\n"
28 " --create-only Do not update neighbour if it exists already.\n"
29 " -q, --quiet Do not print informal notifications\n"
30 " -h, --help Show this help\n"
31 " -v, --version Show versioning information\n"
32 "\n"
33 "Neighbour Options\n"
34 " -a, --addr=ADDR Destination address of neighbour\n"
35 " -l, --lladdr=ADDR Link layer address of neighbour\n"
36 " -d, --dev=DEV Device the neighbour is connected to\n"
37 " --state=STATE Neighbour state, (default = permanent)\n"
38 "\n"
39 "Example\n"
40 " nl-neigh-add --create-only --addr=10.0.0.1 --dev=eth0 \\\n"
41 " --lladdr=AA:BB:CC:DD:EE:FF\n"
42 );
43
44 exit(0);
45 }
46
47 int main(int argc, char *argv[])
48 {
49 struct nl_sock *sock;
50 struct rtnl_neigh *neigh;
51 struct nl_cache *link_cache;
52 struct nl_dump_params dp = {
53 .dp_type = NL_DUMP_LINE,
54 .dp_fd = stdout,
55 };
56 int err, ok = 0, nlflags = NLM_F_REPLACE | NLM_F_CREATE;
57
58 sock = nl_cli_alloc_socket();
59 nl_cli_connect(sock, NETLINK_ROUTE);
60 link_cache = nl_cli_link_alloc_cache(sock);
61 neigh = nl_cli_neigh_alloc();
62
63 for (;;) {
64 int c, optidx = 0;
65 enum {
66 ARG_UPDATE_ONLY = 257,
67 ARG_CREATE_ONLY = 258,
68 ARG_STATE,
69 };
70 static struct option long_opts[] = {
71 { "update-only", 0, 0, ARG_UPDATE_ONLY },
72 { "create-only", 0, 0, ARG_CREATE_ONLY },
73 { "quiet", 0, 0, 'q' },
74 { "help", 0, 0, 'h' },
75 { "version", 0, 0, 'v' },
76 { "addr", 1, 0, 'a' },
77 { "lladdr", 1, 0, 'l' },
78 { "dev", 1, 0, 'd' },
79 { "state", 1, 0, ARG_STATE },
80 { 0, 0, 0, 0 }
81 };
82
83 c = getopt_long(argc, argv, "qhva:l:d:", long_opts, &optidx);
84 if (c == -1)
85 break;
86
87 switch (c) {
88 case ARG_UPDATE_ONLY: nlflags &= ~NLM_F_CREATE; break;
89 case ARG_CREATE_ONLY: nlflags |= NLM_F_EXCL; break;
90 case 'q': quiet = 1; break;
91 case 'h': print_usage(); break;
92 case 'v': nl_cli_print_version(); break;
93 case 'a': ok++; nl_cli_neigh_parse_dst(neigh, optarg); break;
94 case 'l': nl_cli_neigh_parse_lladdr(neigh, optarg); break;
95 case 'd': nl_cli_neigh_parse_dev(neigh, link_cache, optarg); break;
96 case ARG_STATE: nl_cli_neigh_parse_state(neigh, optarg); break;
97 }
98 }
99
100 if (!ok)
101 print_usage();
102
103 if ((err = rtnl_neigh_add(sock, neigh, nlflags)) < 0)
104 nl_cli_fatal(err, "Unable to add neighbour: %s",
105 nl_geterror(err));
106
107 if (!quiet) {
108 printf("Added ");
109 nl_object_dump(OBJ_CAST(neigh), &dp);
110 }
111
112 return 0;
113 }
NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:22
nl_dump_params::dp_type
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:38
rtnl_neigh_add
int rtnl_neigh_add(struct nl_sock *sk, struct rtnl_neigh *tmpl, int flags)
Add a new neighbour.
Definition: neigh.c:780
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:289
nl_cli_fatal
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:78
nl_dump_params
Dumping parameters.
Definition: types.h:33