Wireshark-dev: Re: [Wireshark-dev] Use wtap_pkthdr instead of wtap_pseudo_header [ABI breakage!
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From: Guy Harris <guy@xxxxxxxxxxxx>
Date: Wed, 17 Oct 2012 14:15:44 -0700
On Oct 7, 2012, at 2:06 PM, Jakub Zawadzki <darkjames-ws@xxxxxxxxxxxx> wrote:

> Big plan is to remove two members from frame_data structure:
> interface_id and opt_comment reducing size of frame_data structure from 128B to 112B
> (on 64bits).

Note that comments aren't stored solely in the file - the user might add, change, or remove comments, and not have saved the edited file yet - *but* 99 44/100% of packets probably *haven't* had their comment sets edited, so a separate data structure with entries only for those packets that *have* had their comment sets edited would probably suffice.