Re: subprotocols

[Pascal Quantin <pascal.quantin () gmail com>]

2014-10-14 17:33 GMT+02:00 Charles Smith <cts.private.yahoo () gmail com>:

> Hi.
>
> I have created a dissector for our tunnel protocol.  I have the feeling
> that if I want to decode a payload protocol, say LTE MAC protocol, I'd use
> the proto() statement to hang that into my tree and some library code
> somewhere would do the rest of the decoding ... but I can't find these
> libraries (e.g. http://wiki.wireshark.org/MAC-LTE).  Can someone set me
> straight?
>
> cts

Hi Charles,

LTE MAC dissector is a bit specific as it requires some meta data allowing
it to know how to decaode the payload. You have 2 ways to configure it:
- either look at epan/dissectors/packet-catapult-dct2000.c and check how it
is configuring those meta data (mac_lte_info structure attached to each
frame)
- or use the UDP framing format as described in
epan/dissectors/packet-mac-lte.h file. Some sample code demonstrating how
to use it can be found here: http://wiki.wireshark.org/MAC-LTE

Regards,
Pascal.

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