This adds TUNSETVNETHDRSZ/TUNGETVNETHDRSZ support
to macvtap.
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NDavid S. Miller <davem@davemloft.net>