Small optimization to the code which checks to see if we'd cross
a 4K boundary when stocking RX ring.
Signed-off-by: NBrice Goglin <brice@myri.com>
Signed-off-by: NAndrew Gallatin <gallatin@myri.com>
Signed-off-by: NGuillaume Morin <guillaume@morinfr.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>