Wireshark-dev: Re: [Wireshark-dev] BItfields Larger than 32 Bits
From: Alexis La Goutte <[email protected]>
Date: Tue, 13 May 2014 21:06:55 +0200
On Tue, May 13, 2014 at 8:19 PM, Kevin Cox <[email protected]> wrote:
> Hello,
>
Hi Jevin,
> I was attempting to dissect a 64 bit bitfield and was wondering what the
> best/preferred method was.  I saw a question on ask.wireshark.org[0]
> which had a single answer the said to use a text field.
>
> [0]
> http://ask.wireshark.org/questions/20599/dissecting-bitfields-larger-than-32-bits
>
The better will be add 64bits bitfields... ;-)

> I was wondering if there is a better way to do this.  My best idea would
> be to parse it as two separate 32 bit bitfields however this is not as
> elegant.  If I was to parse it this way I also don't know what values to
> set in the hf struct either.
>
> { &hf_a_field, {
>         "Name", "id",
>         FT_BOOLEAN, 32, NULL, MY_MASK,
>         NULL, HFILL
> } },
>
> What should the parent bitfield length be?  I think it should be 32 but
> I'm not sure.
No problem to use 2 separate bitfields
for the parent, you have the choice

>
> Thanks in advance for any recommendations.
>
> Kevin
>
>
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