1/*
2 * link_veth.c	veth driver module
3 *
4 *		This program is free software; you can redistribute it and/or
5 *		modify it under the terms of the GNU General Public License
6 *		as published by the Free Software Foundation; either version
7 *		2 of the License, or (at your option) any later version.
8 *
9 * Authors:	Pavel Emelianov <xemul@openvz.org>
10 *
11 */
12
13#include <string.h>
14#include <net/if.h>
15#include <linux/veth.h>
16
17#include "utils.h"
18#include "ip_common.h"
19
20static void usage(void)
21{
22	printf("Usage: ip link <options> type veth "
23	       "[peer <options>]\nTo get <options> type "
24	       "'ip link add help'\n");
25}
26
27static int veth_parse_opt(struct link_util *lu, int argc, char **argv,
28			  struct nlmsghdr *hdr)
29{
30	char *name, *type, *link, *dev;
31	int err, len;
32	struct rtattr * data;
33
34	if (strcmp(argv[0], "peer") != 0) {
35		usage();
36		return -1;
37	}
38
39	data = NLMSG_TAIL(hdr);
40	addattr_l(hdr, 1024, VETH_INFO_PEER, NULL, 0);
41
42	hdr->nlmsg_len += sizeof(struct ifinfomsg);
43
44	err = iplink_parse(argc - 1, argv + 1, (struct iplink_req *)hdr,
45			   &name, &type, &link, &dev);
46	if (err < 0)
47		return err;
48
49	if (name) {
50		len = strlen(name) + 1;
51		if (len > IFNAMSIZ)
52			invarg("\"name\" too long\n", *argv);
53		addattr_l(hdr, 1024, IFLA_IFNAME, name, len);
54	}
55
56	data->rta_len = (void *)NLMSG_TAIL(hdr) - (void *)data;
57	return argc - 1 - err;
58}
59
60struct link_util veth_link_util = {
61	.id = "veth",
62	.parse_opt = veth_parse_opt,
63};
64