What is best way to use other protocol subdissectors?

[Dmitriy Linikov <dmitriy () linikov ru>]

Hi, guys.

I'm adding support for CAN messages over IEEE1722 control frames. What is
the best way to decode CAN message and payload?

Up to now I have found the following approaches:
- like in packet-caneth.c, adding fake "can.flags.xxx" to the list of
protocol fields and explicit using "can.subdissectors" table.
- using the composite tvb to combine real payload with a fake socketcan
header.

The first approach has failed for me because during commit i have several
errors like the following: "can.flags.rtr doesn't match PROTOABBREV of
ieee1722".

But the second approach seems a bit unnatural for me.

What would you suggest?

Best regards,
Dmitriy Linikov.

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