When your dissector is called


Called by the protocol below you
Eg, packet-tcp.c, etc
Once, on first pass, for every packet that is yours
Mainly, summary info wanted this time around
If filter specified, full decode needed
If color filter in effect, full decode needed
Everytime user clicks on one of your packets in the summary pane	
If a rescan is needed
Once, again, for every packet that is yours