On Fri, Jan 14, 2011 at 12:42:52AM +0800, cheng chen wrote:

Hi all,
I am working on vehicle body control system with can-bus as my BE final
project.
It contains three parts.

1.CAN chip driver
2.CAN-bus protocol stack
3.UI

The problem is that I already have written the CAN chip driver as  a
character device driver using IO-simulated SPI.

Oops, don't do that.

So with this character driver API open() read() write() ioctl(), I start to
wonder where can I put my protocol stack?

Use the in-kernel CAN protocol stack, that is much easier.

Or should rewrite the driver in network device frameworks?

Yes.

thanks,

greg k-h