E1000_COLD_SHIFT
tctl |= E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT;
(E1000_HDX_COLLISION_DISTANCE << E1000_COLD_SHIFT);
tctl |= E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT;
(E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT) |