libnl  3.5.0
nl-route-add.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3  * src/nl-route-add.c Route addition utility
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/route.h>
15 #include <netlink/cli/link.h>
16 
17 #include <linux/netlink.h>
18 
19 static int quiet = 0;
20 static struct nl_cache *link_cache, *route_cache;
21 
22 static void print_usage(void)
23 {
24  printf(
25  "Usage: nl-route-add [OPTION]... [ROUTE]\n"
26  "\n"
27  "Options\n"
28  " -q, --quiet Do not print informal notifications\n"
29  " -h, --help Show this help\n"
30  " -v, --version Show versioning information\n"
31  "\n"
32  "Route Options\n"
33  " -d, --dst=ADDR destination prefix, e.g. 10.10.0.0/16\n"
34  " -n, --nexthop=NH nexthop configuration:\n"
35  " dev=DEV route via device\n"
36  " weight=WEIGHT weight of nexthop\n"
37  " flags=FLAGS\n"
38  " via=GATEWAY route via other node\n"
39  " realms=REALMS\n"
40  " e.g. dev=eth0,via=192.168.1.12\n"
41  " -t, --table=TABLE Routing table\n"
42  " --family=FAMILY Address family\n"
43  " --src=ADDR Source prefix\n"
44  " --iif=DEV Incomming interface\n"
45  " --pref-src=ADDR Preferred source address\n"
46  " --metrics=OPTS Metrics configurations\n"
47  " --priority=NUM Priotity\n"
48  " --scope=SCOPE Scope\n"
49  " --protocol=PROTO Protocol\n"
50  " --type=TYPE { unicast | local | broadcast | multicast }\n"
51  );
52  exit(0);
53 }
54 
55 int main(int argc, char *argv[])
56 {
57  struct nl_sock *sock;
58  struct rtnl_route *route;
59  struct nl_dump_params dp = {
61  .dp_fd = stdout,
62  };
63  int err = 1;
64 
65  sock = nl_cli_alloc_socket();
66  nl_cli_connect(sock, NETLINK_ROUTE);
67  link_cache = nl_cli_link_alloc_cache(sock);
68  route_cache = nl_cli_route_alloc_cache(sock, 0);
69  route = nl_cli_route_alloc();
70 
71  for (;;) {
72  int c, optidx = 0;
73  enum {
74  ARG_FAMILY = 257,
75  ARG_SRC = 258,
76  ARG_IIF,
77  ARG_PREF_SRC,
78  ARG_METRICS,
79  ARG_PRIORITY,
80  ARG_SCOPE,
81  ARG_PROTOCOL,
82  ARG_TYPE,
83  };
84  static struct option long_opts[] = {
85  { "quiet", 0, 0, 'q' },
86  { "help", 0, 0, 'h' },
87  { "version", 0, 0, 'v' },
88  { "dst", 1, 0, 'd' },
89  { "nexthop", 1, 0, 'n' },
90  { "table", 1, 0, 't' },
91  { "family", 1, 0, ARG_FAMILY },
92  { "src", 1, 0, ARG_SRC },
93  { "iif", 1, 0, ARG_IIF },
94  { "pref-src", 1, 0, ARG_PREF_SRC },
95  { "metrics", 1, 0, ARG_METRICS },
96  { "priority", 1, 0, ARG_PRIORITY },
97  { "scope", 1, 0, ARG_SCOPE },
98  { "protocol", 1, 0, ARG_PROTOCOL },
99  { "type", 1, 0, ARG_TYPE },
100  { 0, 0, 0, 0 }
101  };
102 
103  c = getopt_long(argc, argv, "qhvd:n:t:", long_opts, &optidx);
104  if (c == -1)
105  break;
106 
107  switch (c) {
108  case 'q': quiet = 1; break;
109  case 'h': print_usage(); break;
110  case 'v': nl_cli_print_version(); break;
111  case 'd': nl_cli_route_parse_dst(route, optarg); break;
112  case 'n': nl_cli_route_parse_nexthop(route, optarg, link_cache); break;
113  case 't': nl_cli_route_parse_table(route, optarg); break;
114  case ARG_FAMILY: nl_cli_route_parse_family(route, optarg); break;
115  case ARG_SRC: nl_cli_route_parse_src(route, optarg); break;
116  case ARG_IIF: nl_cli_route_parse_iif(route, optarg, link_cache); break;
117  case ARG_PREF_SRC: nl_cli_route_parse_pref_src(route, optarg); break;
118  case ARG_METRICS: nl_cli_route_parse_metric(route, optarg); break;
119  case ARG_PRIORITY: nl_cli_route_parse_prio(route, optarg); break;
120  case ARG_SCOPE: nl_cli_route_parse_scope(route, optarg); break;
121  case ARG_PROTOCOL: nl_cli_route_parse_protocol(route, optarg); break;
122  case ARG_TYPE: nl_cli_route_parse_type(route, optarg); break;
123  }
124  }
125 
126  if ((err = rtnl_route_add(sock, route, NLM_F_EXCL)) < 0)
127  nl_cli_fatal(err, "Unable to add route: %s", nl_geterror(err));
128 
129  if (!quiet) {
130  printf("Added ");
131  nl_object_dump(OBJ_CAST(route), &dp);
132  }
133 
134  return 0;
135 }
Dump object briefly on one line.
Definition: types.h:22
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:38
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
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:78
Dumping parameters.
Definition: types.h:33