libnl  3.6.0
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 <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 int quiet = 0;
13 
14 static void print_usage(void)
15 {
16  printf(
17  "Usage: nl-neigh-add [OPTION]... NEIGHBOUR\n"
18  "\n"
19  "Options\n"
20  " --update-only Do not create neighbour, updates exclusively\n"
21  " --create-only Do not update neighbour if it exists already.\n"
22  " -q, --quiet Do not print informal notifications\n"
23  " -h, --help Show this help\n"
24  " -v, --version Show versioning information\n"
25  "\n"
26  "Neighbour Options\n"
27  " -a, --addr=ADDR Destination address of neighbour\n"
28  " -l, --lladdr=ADDR Link layer address of neighbour\n"
29  " -d, --dev=DEV Device the neighbour is connected to\n"
30  " --state=STATE Neighbour state, (default = permanent)\n"
31  "\n"
32  "Example\n"
33  " nl-neigh-add --create-only --addr=10.0.0.1 --dev=eth0 \\\n"
34  " --lladdr=AA:BB:CC:DD:EE:FF\n"
35  );
36 
37  exit(0);
38 }
39 
40 int main(int argc, char *argv[])
41 {
42  struct nl_sock *sock;
43  struct rtnl_neigh *neigh;
44  struct nl_cache *link_cache;
45  struct nl_dump_params dp = {
47  .dp_fd = stdout,
48  };
49  int err, ok = 0, nlflags = NLM_F_REPLACE | NLM_F_CREATE;
50 
51  sock = nl_cli_alloc_socket();
52  nl_cli_connect(sock, NETLINK_ROUTE);
53  link_cache = nl_cli_link_alloc_cache(sock);
54  neigh = nl_cli_neigh_alloc();
55 
56  for (;;) {
57  int c, optidx = 0;
58  enum {
59  ARG_UPDATE_ONLY = 257,
60  ARG_CREATE_ONLY = 258,
61  ARG_STATE,
62  };
63  static struct option long_opts[] = {
64  { "update-only", 0, 0, ARG_UPDATE_ONLY },
65  { "create-only", 0, 0, ARG_CREATE_ONLY },
66  { "quiet", 0, 0, 'q' },
67  { "help", 0, 0, 'h' },
68  { "version", 0, 0, 'v' },
69  { "addr", 1, 0, 'a' },
70  { "lladdr", 1, 0, 'l' },
71  { "dev", 1, 0, 'd' },
72  { "state", 1, 0, ARG_STATE },
73  { 0, 0, 0, 0 }
74  };
75 
76  c = getopt_long(argc, argv, "qhva:l:d:", long_opts, &optidx);
77  if (c == -1)
78  break;
79 
80  switch (c) {
81  case ARG_UPDATE_ONLY: nlflags &= ~NLM_F_CREATE; break;
82  case ARG_CREATE_ONLY: nlflags |= NLM_F_EXCL; break;
83  case 'q': quiet = 1; break;
84  case 'h': print_usage(); break;
85  case 'v': nl_cli_print_version(); break;
86  case 'a': ok++; nl_cli_neigh_parse_dst(neigh, optarg); break;
87  case 'l': nl_cli_neigh_parse_lladdr(neigh, optarg); break;
88  case 'd': nl_cli_neigh_parse_dev(neigh, link_cache, optarg); break;
89  case ARG_STATE: nl_cli_neigh_parse_state(neigh, optarg); break;
90  }
91  }
92 
93  if (!ok)
94  print_usage();
95 
96  if ((err = rtnl_neigh_add(sock, neigh, nlflags)) < 0)
97  nl_cli_fatal(err, "Unable to add neighbour: %s",
98  nl_geterror(err));
99 
100  if (!quiet) {
101  printf("Added ");
102  nl_object_dump(OBJ_CAST(neigh), &dp);
103  }
104 
105  return 0;
106 }
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:71
int rtnl_neigh_add(struct nl_sock *sk, struct rtnl_neigh *tmpl, int flags)
Add a new neighbour.
Definition: neigh.c:776
void nl_object_dump(struct nl_object *obj, struct nl_dump_params *params)
Dump this object according to the specified parameters.
Definition: object.c:287
@ NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:16
Dumping parameters.
Definition: types.h:28
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:32