Re: CAN over Ethernet

[Kumquat KromKiller <kromkillerkumquat () gmail com>]

I choose how CAN messages will be transported, that is why I said I can add
whatever layers I want between Ethernet and CAN.

Right now, it's just plain encapsulation of CAN over Ethernet with a custom
EtherType greater than 0x0600.

Ideally, I would like to avoid making my own dissector. It would be great
if captured traffic could be dissected with Wireshark out-of-the-box, even
if I have to add several unnecessary layers between Ethernet and CAN.

For example, SLL has a non-standard EtherType value for CAN messages but it
cannot be encapsulated with Ethernet (there's no standard EtherType value
for SLL)

Maybe there's a combination of CANopen, SLL, EtherCAT, SocketCAN or
whatever that can achieve this ?


On Sat, Nov 7, 2015 at 1:57 PM, Roland Knall <rknall () gmail com> wrote:

> Hi
>
> It depends how the CAN messages are being transported within Ethernet.
> Then you could write a dissector for the method, which in turn calls the
> CAN dissector.
>
> The same thing happens with a lot of other dissectors,the openSAFETY
> disssector for instance.
>
> regards,
> Roland
>
> On Sat, Nov 7, 2015 at 1:33 PM, Kumquat KromKiller <
> kromkillerkumquat () gmail com> wrote:
>
> > Hi everyone,
> >
> > I need to transport CAN messages over Ethernet and I would like to be
> > able to dissect them in Wireshark for debugging purposes.
> >
> > Considering the fact that I can add whatever layers I want between
> > Ethernet and CAN, what would be the most efficient way to achieve this ?
> >
> > Thanks.
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