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veth device link management 

Signed-off-by: Vitaliy Gusev <vgusev@openvz.org>
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
This commit is contained in:
Vitaliy Gusev 2007-12-18 15:15:38 +03:00 committed by Stephen Hemminger
parent 909dfe2c7e
commit f9329ccaf9
2 changed files with 27 additions and 55 deletions
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74
ip/link_veth.c
View File

@ -10,78 +10,52 @@
*
*/
#include <stdio.h>
#include <string.h>
#include "utils.h"
#include "ip_common.h"
#include "veth.h"
#define ETH_ALEN 6
#define IFNAMSIZ 16
static void usage(void)
{
printf("Usage: ip link add ... type veth "
"[peer <peer-name>] [mac <mac>] [peer_mac <mac>]\n");
printf("Usage: ip link <options> type veth "
"[peer <options>]\nTo get <options> type "
"'ip link add help'\n");
}
static int veth_parse_opt(struct link_util *lu, int argc, char **argv,
struct nlmsghdr *hdr)
{
__u8 mac[ETH_ALEN];
char *name, *type, *link, *dev;
int err, len;
struct rtattr * data;
for (; argc != 0; argv++, argc--) {
if (strcmp(*argv, "peer") == 0) {
argv++;
argc--;
if (argc == 0) {
if (strcmp(argv[0], "peer") != 0) {
usage();
return -1;
}
addattr_l(hdr, 1024, VETH_INFO_PEER,
*argv, strlen(*argv));
data = NLMSG_TAIL(hdr);
addattr_l(hdr, 1024, VETH_INFO_PEER, NULL, 0);
continue;
hdr->nlmsg_len += sizeof(struct ifinfomsg);
err = iplink_parse(argc - 1, argv + 1, (struct iplink_req *)hdr,
&name, &type, &link, &dev);
if (err < 0)
return err;
if (name) {
len = strlen(name) + 1;
if (len > IFNAMSIZ)
invarg("\"name\" too long\n", *argv);
addattr_l(hdr, 1024, IFLA_IFNAME, name, len);
}
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;
data->rta_len = (void *)NLMSG_TAIL(hdr) - (void *)data;
return argc - 1 - err;
}
struct link_util veth_link_util = {

2
ip/veth.h
View File

@ -3,9 +3,7 @@
enum {
VETH_INFO_UNSPEC,
VETH_INFO_MAC,
VETH_INFO_PEER,
VETH_INFO_PEER_MAC,
__VETH_INFO_MAX
#define VETH_INFO_MAX (__VETH_INFO_MAX - 1)