diff options
| author | Peter Christensen <pch@ordbogen.com> | 2014-05-08 11:15:37 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-05-12 14:15:37 -0400 |
| commit | bbeb0eadcf9fe74fb2b9b1a6fea82cd538b1e556 (patch) | |
| tree | 1afd7673a64d0361cd856dae9efcc01528c0498c /drivers/net/macvlan.c | |
| parent | 1a466ae96e9f749d02a73315a3e66375e61a61dd (diff) | |
| download | lwn-bbeb0eadcf9fe74fb2b9b1a6fea82cd538b1e556.tar.gz lwn-bbeb0eadcf9fe74fb2b9b1a6fea82cd538b1e556.zip | |
macvlan: Don't propagate IFF_ALLMULTI changes on down interfaces.
Clearing the IFF_ALLMULTI flag on a down interface could cause an allmulti
overflow on the underlying interface.
Attempting the set IFF_ALLMULTI on the underlying interface would cause an
error and the log message:
"allmulti touches root, set allmulti failed."
Signed-off-by: Peter Christensen <pch@ordbogen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/macvlan.c')
| -rw-r--r-- | drivers/net/macvlan.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index b0e2865a6810..c5fb9cf95c12 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -458,8 +458,10 @@ static void macvlan_change_rx_flags(struct net_device *dev, int change) struct macvlan_dev *vlan = netdev_priv(dev); struct net_device *lowerdev = vlan->lowerdev; - if (change & IFF_ALLMULTI) - dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); + if (dev->flags & IFF_UP) { + if (change & IFF_ALLMULTI) + dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1); + } } static void macvlan_set_mac_lists(struct net_device *dev) |