1 /* SPDX-License-Identifier: LGPL-2.1-only */
2
3 #include "nl-default.h"
4
5 #include <netinet/ether.h>
6
7 #include <linux/netlink.h>
8
9 #include <netlink/netlink.h>
10 #include <netlink/route/link.h>
11 #include <netlink/route/link/macvtap.h>
12
main(int argc,char * argv[])13 int main(int argc, char *argv[])
14 {
15 struct rtnl_link *link;
16 struct nl_cache *link_cache;
17 struct nl_sock *sk;
18 struct nl_addr* addr;
19 int err, master_index;
20
21 sk = nl_socket_alloc();
22 if ((err = nl_connect(sk, NETLINK_ROUTE)) < 0) {
23 nl_perror(err, "Unable to connect socket");
24 return err;
25 }
26
27 if ((err = rtnl_link_alloc_cache(sk, AF_UNSPEC, &link_cache)) < 0) {
28 nl_perror(err, "Unable to allocate cache");
29 return err;
30 }
31
32 if (!(master_index = rtnl_link_name2i(link_cache, "eth0"))) {
33 fprintf(stderr, "Unable to lookup eth0");
34 return -1;
35 }
36
37 link = rtnl_link_macvtap_alloc();
38
39 rtnl_link_set_link(link, master_index);
40
41 addr = nl_addr_build(AF_LLC, ether_aton("00:11:22:33:44:55"), ETH_ALEN);
42 rtnl_link_set_addr(link, addr);
43 nl_addr_put(addr);
44
45 rtnl_link_macvtap_set_mode(link, rtnl_link_macvtap_str2mode("bridge"));
46
47 if ((err = rtnl_link_add(sk, link, NLM_F_CREATE)) < 0) {
48 nl_perror(err, "Unable to add link");
49 return err;
50 }
51
52 rtnl_link_put(link);
53 nl_close(sk);
54
55 return 0;
56 }
57