Wireshark · Ethereal-dev: Re: [Ethereal-dev] What is the best way to get data from one dissector to another one above ?

[Jeff Morriss <morriss@xxxxxxxxx>]

Yes, every dissector above MTP3 using the private pointer would have to 
be changed--but AFAIK that's only mtp3mg.

I think that having the MTP3 (and later SCCP) addresses set (as per 
Guy's suggestion) is the way to go though--especially since it would 
allow the use of the conversation code for SCCP-Class2 (no more 
heuristic dissectors).

Michael Lum wrote:

> That would require that every dissector using the private pointer be changed
> right ?
>
> Is passing data common ?
>
>
> > -----Original Message-----
> > From: Jeff Morriss [mailto:morriss@xxxxxxxxx]
> > Sent: Friday, November 14, 2003 11:07 AM
> > To: mlum@xxxxxxxxxxxxx
> > Cc: Ethereal
> > Subject: Re: [Ethereal-dev] What is the best way to get data from one
> > dissector to another one above ?
> >
> >
> >
> > Michael Lum wrote:
> >
> >
> > > The concrete example is OPC/DPC in MTP3:
> > >
> > > The OPC and DPC are integers that I want to make available to the SCCP
> > > dissector.
> > >
> > > Put externs in packet-mtp3.h ?
> >
> > There's a 'private' pointer that can be used.  MTP3 currently sets this
> > to be the SI (in order to pass the SI to the mtp3mg dissector):
> >
> >
> > >  pinfo->private_data = (void *)(sio & SERVICE_INDICATOR_MASK);
> >
> > This pointer could probably be made to point to a more complicated
> > structure which would be defined in packet-mtp3.h ?