Wireshark · Wireshark-dev: Re: [Wireshark-dev] Retrieving dissection result from another dissector

[Peter Wu <peter@xxxxxxxxxxxxx>]

Hi Dario,

Another possibility is to use p_add_proto_data/p_get_proto_data with packet scope with the protocol and id as chosen by the producer. That way you do not have to change the data argument.

Kind regards,
Peter
https://lekensteyn.nl
(pardon my brevity, top-posting and formatting, sent from my phone)


On July 3, 2018 5:09:52 PM GMT+02:00, Dario Lombardo <lomato@xxxxxxxxx> wrote:
>Actually I'm using the blob to pass data from the caller to the called.
>I
>guess it's a design flow to re-use this blob to have data back...
>
>On Tue, Jul 3, 2018 at 5:01 PM Richard Sharpe
><realrichardsharpe@xxxxxxxxx>
>wrote:
>
>> On Tue, Jul 3, 2018 at 7:55 AM, Dario Lombardo <lomato@xxxxxxxxx>
>wrote:
>> > Hi
>> > In my dissector I need to call another dissector, and I'm using
>> > call_dissector_with_data(). I need to have back one result coming
>from
>> the
>> > dissection (an integer) to use in the calling dissector.
>> > How can I do that?
>>
>> You can pass in a void * pointer to a blob of data. Put the result in
>> that blob of data.
>>
>> --
>> Regards,
>> Richard Sharpe
>> (何以解憂？唯有杜康。--曹操)(传说杜康是酒的发明者)
>>
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