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/*
* link_veth.c veth driver module
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Authors: Pavel Emelianov <xemul@openvz.org>
*
*/
#include <string.h>
#include "utils.h"
#include "ip_common.h"
#include "veth.h"
#define ETH_ALEN 6
static void usage(void)
{
printf("Usage: ip link add ... type veth "
"[peer <peer-name>] [mac <mac>] [peer_mac <mac>]\n");
}
static int veth_parse_opt(struct link_util *lu, int argc, char **argv,
struct nlmsghdr *hdr)
{
__u8 mac[ETH_ALEN];
for (; argc != 0; argv++, argc--) {
if (strcmp(*argv, "peer") == 0) {
argv++;
argc--;
if (argc == 0) {
usage();
return -1;
}
addattr_l(hdr, 1024, VETH_INFO_PEER,
*argv, strlen(*argv));
continue;
}
if (strcmp(*argv, "mac") == 0) {
argv++;
argc--;
if (argc == 0) {
usage();
return -1;
}
if (hexstring_a2n(*argv, mac, sizeof(mac)) == NULL)
return -1;
addattr_l(hdr, 1024, VETH_INFO_MAC,
mac, ETH_ALEN);
continue;
}
if (strcmp(*argv, "peer_mac") == 0) {
argv++;
argc--;
if (argc == 0) {
usage();
return -1;
}
if (hexstring_a2n(*argv, mac, sizeof(mac)) == NULL)
return -1;
addattr_l(hdr, 1024, VETH_INFO_PEER_MAC,
mac, ETH_ALEN);
continue;
}
usage();
return -1;
}
return 0;
}
struct link_util veth_link_util = {
.id = "veth",
.parse_opt = veth_parse_opt,
};
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