Using can & can-j1939

[Kurt Van Dijck <kurt.van.dijck@eia.be>]

On Wed, Dec 14, 2011 at 06:19:45PM +0000, Wolfgang wrote:
> > > Error: either "dev" is duplicate, or "j1939" is a garbage.
> > 
> > This makes me think you have the original 'stock' iproute2, and not
> > the iproute2-j1939 one (but I'm not sure yet today).
> 
> Yes, you are right I was using the 'stock' iproute2
That explains things :-)

> should I replace the stock 
> with the j1939 iproute2, before compiling the kernel?
No, not before 'compiling' the kernel.
But before 'using' the j1939 options from the newly compiled kernel.
> I think I understood that wrong. 
Not really..., see below

> Do I have to replace the can-utils as well;
Yes,
> I am still not complete aware how
> the respitories differ from each other
I did never really explain this, therefore:
I added j1939 into the kernel => recompile kernel.
I added j1939 configuration to iproute2 => replace iproute2 for using j1939
I added some specific j1939 support & monitoring tools (jacd, ...) => 
	replace can-utils for using j1939

Summarize: the real core of j1939 is in kernel space.
To get it up & running, you need some (smaller) userspace modifications.

I hope this demistifies a tiny bit

Kind regards,
Kurt