How to design protocol stack with can-bus driver of character driver

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. So with this character driver API open() read() write() ioctl(), I start to wonder where can I put my protocol stack? Or should rewrite the driver in network device frameworks? Thx -- Cheng(誠) Fedora Project Contributor -- Ambassador https://fedoraproject.org/wiki/User:Freakrobot _______________________________________________ My Page: http://freakrobot.blogbus.com/