vlan: Pass SIOC[SG]HWTSTAMP ioctls to real device

This allows applications to enable hardware timestamping without being aware
of it being a vlan device and figuring out the real device.

Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 file changed