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[RTNETLINK]: ifindex 0 does not exist 

ifindex == 0 does not exist and implies we should do a lookup by name if
one was given.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2007-06-05 12:40:01 -07:00 committed by David S. Miller
parent ef7c79ed64
commit 51055be81c
1 changed files with 3 additions and 3 deletions
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6
net/core/rtnetlink.c
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@ -580,7 +580,7 @@ static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
err = -EINVAL;
ifm = nlmsg_data(nlh);
if (ifm->ifi_index >= 0)
if (ifm->ifi_index > 0)
dev = dev_get_by_index(ifm->ifi_index);
else if (tb[IFLA_IFNAME])
dev = dev_get_by_name(ifname);
@ -672,7 +672,7 @@ static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
* name provided implies that a name change has been
* requested.
*/
if (ifm->ifi_index >= 0 && ifname[0]) {
if (ifm->ifi_index > 0 && ifname[0]) {
err = dev_change_name(dev, ifname);
if (err < 0)
goto errout_dev;
@ -740,7 +740,7 @@ static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
return err;
ifm = nlmsg_data(nlh);
if (ifm->ifi_index >= 0) {
if (ifm->ifi_index > 0) {
dev = dev_get_by_index(ifm->ifi_index);
if (dev == NULL)
return -ENODEV;