1 /* SPDX-License-Identifier: LGPL-2.1-only */
2
3 #include "nl-default.h"
4
5 #include <linux/netlink.h>
6
7 #include <netlink/netlink.h>
8 #include <netlink/route/link.h>
9 #include <netlink/route/link/vlan.h>
10
main(int argc,char * argv[])11 int main(int argc, char *argv[])
12 {
13 struct rtnl_link *link;
14 struct nl_cache *link_cache;
15 struct nl_sock *sk;
16 int err, master_index;
17
18 sk = nl_socket_alloc();
19 if ((err = nl_connect(sk, NETLINK_ROUTE)) < 0) {
20 nl_perror(err, "Unable to connect socket");
21 return err;
22 }
23
24 if ((err = rtnl_link_alloc_cache(sk, AF_UNSPEC, &link_cache)) < 0) {
25 nl_perror(err, "Unable to allocate cache");
26 return err;
27 }
28
29 if (!(master_index = rtnl_link_name2i(link_cache, "eth0"))) {
30 fprintf(stderr, "Unable to lookup eth0");
31 return -1;
32 }
33
34 link = rtnl_link_vlan_alloc();
35
36 rtnl_link_set_link(link, master_index);
37
38 rtnl_link_vlan_set_id(link, 10);
39
40 if ((err = rtnl_link_add(sk, link, NLM_F_CREATE)) < 0) {
41 nl_perror(err, "Unable to add link");
42 return err;
43 }
44
45 rtnl_link_put(link);
46 nl_close(sk);
47
48 return 0;
49 }
50