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

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

[cheng chen]

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(?)

Fedora Project Contributor -- Ambassador
https://fedoraproject.org/wiki/User:Freakrobot
_______________________________________________

My Page: http://freakrobot.blogbus.com/
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How to design protocol stack with can-bus driver of character driver

[Daniel Baluta]

Hi,

On Thu, Jan 13, 2011 at 6:42 PM, cheng chen <freakrobot@acm.org> 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.
> 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?

I strongly recommend you to have a look at Socket CAN ([1]).

thanks,
Daniel.

[1] http://lxr.linux.no/linux+v2.6.37/Documentation/networking/can.txt

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

[Greg KH]

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

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

[cheng chen]

OK, I guess at least my previous work can be used for reference group.
Thanks for both of you.

On Fri, Jan 14, 2011 at 1:40 AM, Greg KH <greg@kroah.com> wrote:

> 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
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>



-- 
Cheng(?)

Fedora Project Contributor -- Ambassador
https://fedoraproject.org/wiki/User:Freakrobot
_______________________________________________

My Page: http://freakrobot.blogbus.com/
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