Even though the CAN netlayer only deals with CAN netdevices, the
netlayer interface to the userspace and to the device layer should
perform some sanity checks.

This patch adds several sanity checks that mainly prevent userspace apps
to send broken content into the system that may be misinterpreted by
some other userspace application.

Signed-off-by: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
Signed-off-by: Urs Thuermann <urs.thuermann@volkswagen.de>
Acked-by: Andre Naujoks <nautsch@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---


Hello Greg,

please consider this patch for your next 2.6.25-stable. It adds several 
sanity checks for the CAN subsystem and became part of 2.6.26 in 
upstream commit

7f2d38eb7a42bea1c1df51bbdaa2ca0f0bdda07f

For your convenience i added the backported patch that applies directly 
on linux-2.6.25.y.git

Thanks & best regards,
Oliver