Re: Defining a DLT which could be used to dissect any protocol.

[Martin Mathieson <martin.r.mathieson () googlemail com>]

Isn't this similar (but more general) to what packet-meta.c does - although
probably that one is tailored to what Tobias has needed?
Martin

On Tue, Feb 7, 2012 at 2:33 PM, Anders Broman <anders.broman () ericsson com>wrote:

>  Hi,
> How about defining a DLT with a TLV based header which could be used to
> carry any protocol - a tag would contain the name of the protocol to be
> called the name would of course have to correspond
> To the name the dissector has registered in Wireshark - yes this is a
> weakness an alternative would be to give every protocol a number but that
> means keeping a registry list.
> Tags could be defined to carry any extra info needed.
>
> Something like this
> Header
> Header length
> Header version
> -------------------
> Tag
> Length
> value
> --------
> :
> --------
> Tag = Data
> Length
> Data
>
> Example tags
> Tag = 1  Protocol name, the name used by the Wireshark dissector to be
> called with the protocol data. ( ex "sip" ).
> Tag = 2  SRC Address( Octet 1 = Address family), ( ex IP4 address, IP6
> Address, OPC, DPC ....)
>                                    2-n Address data
> Tag = 2  DST Address
> :
> Tag X  Vendor specific ( vendor Id, vendor tag  + data)
> Tag = 254 Data
> Tag = 255 Reserved for extension
>
> This is just to test the wathers before geting to far into defining the
> tags.
> Comments?
>
> Regards
> Anders
>
>
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