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Commit 51055be8 authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller
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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: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ef7c79ed

net/core/rtnetlink.c

+3 −3
Original line number Diff line number Diff line
@@ -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;