Wireshark-bugs: [Wireshark-bugs] [Bug 11277] Problem in decoding Wifi Traffic with MPDU aggregat
Comment # 13
on bug 11277
from Hany
(In reply to Guy Harris from comment #11)
> (In reply to Hany from comment #7)
> > (In reply to Hany from comment #6)
> > > Created attachment 13670 [details]
> > > New Wireshark Capture File
> >
> > I have fixed the problem with ns3 and generated Wifi Traffic with MPDU
> > aggregation enabled and MPDU Status Flag added in the RadioTap Header.
> > Please have a look on the attached file "New Wireshark Capture File" and
> > confirm to me whether I still need to make more enhancement to ns3 or not.
>
> That file is correct.
>
> About the only enhancements you *might* want to consider would be to
> calculate what the CRC would have been for the delimiter and put it into the
> radiotap header, but that's not required.
>
> Note also that you're setting the "FCS present" flag in the radiotap Flags
> field, but there doesn't appear to be a valid FCS value at the end of the
> frame - it's all zeroes.
>
> If you had to change the code in ns3 itself, please submit your changes to
> the ns3 developers as part of a bug report.
>
> If you had to change your own code implemented atop ns3, then, other than
> the two possible CRC-related enhancements I mentioned, you're done.
Hi,
I am already working on a patch for ns3. I have already contacted the
maintainer of the Wifi Module and hopefully in the coming days I will send him
the patch file.
In ns3, to save processing we escape doing any CRC or FCS calculation and we
set it to 0.
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