On Wed, Oct 13, 2010 at 11:51:20AM +0200, Marc Kleine-Budde wrote:
> I think we (the socketcan people) originally thought it's a better
> solution to loop the CAN frames back in hardware (if available), as it
> represents what's happening on the wire far better than software
> loopback. But it turns out that many people need the receive own
> messages feature (for whatever reason).

IMO, the reason is that most 'chips' provide a TX complete interrupt.
SocketCAN is an extension of the bus, but a socket lacks (currently, I wrote
a patch yesterday ...) a 'tx complete interrupt' equivalent.

The msg path in the kernel shouldn't necessarily be the same for RX & TX msgs?

Kurt
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