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macvlan: unregister net device when netdev_upper_dev_link() fails

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rtnl_newlink() doesn't unregister it for us on failure.

Cc: Patrick McHardy <kaber@trash.net>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cong Wang
2014-02-11 15:51:29 -08:00
committed by David S. Miller
parent 64380a04de
commit da37705cef
1 changed files with 3 additions and 2 deletions
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drivers/net/macvlan.c
+3 -2
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@@ -879,14 +879,15 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
dev->priv_flags |= IFF_MACVLAN; dev->priv_flags |= IFF_MACVLAN;
err = netdev_upper_dev_link(lowerdev, dev); err = netdev_upper_dev_link(lowerdev, dev);
if (err) if (err)
goto destroy_port; goto unregister_netdev;
list_add_tail_rcu(&vlan->list, &port->vlans); list_add_tail_rcu(&vlan->list, &port->vlans);
netif_stacked_transfer_operstate(lowerdev, dev); netif_stacked_transfer_operstate(lowerdev, dev);
return 0; return 0;
unregister_netdev:
unregister_netdevice(dev);
destroy_port: destroy_port:
port->count -= 1; port->count -= 1;
if (!port->count) if (!port->count)