Wireshark-dev: Re: [Wireshark-dev] dissector_add_uint() usage
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From: Guy Harris <guy@xxxxxxxxxxxx>
Date: Sun, 27 Mar 2011 20:02:21 -0700
On Mar 27, 2011, at 7:42 PM, Raghavan R wrote:

> I am writing a dissector for a Fibre Channel related protocol and want
> my dissector to get called based on value of fcct.gstype.

Then you will have to modify the Fibre Channel dissector so that it has a dissector table that uses the value of fcct.gstype to choose which dissector to call.

At this point, I think one of my biggest mistakes was to give dissector tables names that were the same as the name of the field they used, because that causes a lot of people to think you can use *any* named field as a dissector table.  You *can't* do that; registered fields and registered dissector tables are separate, and almost all fields to *not* have a dissector table associated with them (because almost all fields are *not* used in protocol implementations to select which protocol module to hand the packet to).