This structure was accidentally defined such that its layout can
differ between 32-bit and 64-bit processes.  Add compat structure
definitions and an ioctl wrapper function.
Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
Acked-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Cc: stable@kernel.org [2.6.30+]
Signed-off-by: NDavid S. Miller <davem@davemloft.net>