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	int group;
34
35	if (strcmp(argv[0], "peer") != 0) {
36		usage();
37		return -1;
38	}
39
40	data = NLMSG_TAIL(hdr);
41	addattr_l(hdr, 1024, VETH_INFO_PEER, NULL, 0);
42
43	hdr->nlmsg_len += sizeof(struct ifinfomsg);
44
45	err = iplink_parse(argc - 1, argv + 1, (struct iplink_req *)hdr,
46			   &name, &type, &link, &dev, &group);
47	if (err < 0)
48		return err;
49
50	if (name) {
51		len = strlen(name) + 1;
52		if (len > IFNAMSIZ)
53			invarg("\"name\" too long\n", *argv);
54		addattr_l(hdr, 1024, IFLA_IFNAME, name, len);
55	}
56
57	data->rta_len = (void *)NLMSG_TAIL(hdr) - (void *)data;
58	return argc - 1 - err;
59}
60
61struct link_util veth_link_util = {
62	.id = "veth",
63	.parse_opt = veth_parse_opt,
64};
65