On Fri, Apr 01, 2011 at 02:36:50PM -0400, Bill Meier wrote:
> Take at look at the data struct passed to register_tap() (or whatever
> it's called) when the tap is created by the dissector.
>
> I'm not a 'tap' expert, but I think a ptr to that struct is passed to
> the tap callback fcn called for each frame.
The tap_queue_packet() function takes three parameters:
void tap_queue_packet(int tap_id, packet_info *pinfo, const void
*tap_specific_data)
The third value, tap_specific_data can be used to pass any data you
would like from a dissector to the tap functions.
For an example, look at the dissect_http_message function in
epan/dissectors/packet-http.c which passes the eo_info struct to the
http_eo_tap (which is read by the tap code in gtk/export_object_http.c
function eo_http_packet).
