Re: use of radiotap bit 14?

Guy Harris wrote:

> David Young wrote:
>> On Thu, Jun 19, 2008 at 09:10:33PM +0200, Johannes Berg wrote:
>>> Problem is, wireshark actually takes bit 14 to mean "FCS in header".
>>
>> I'd forgotten about that, but I think that we still have some 
>> flexibility.
> 
> As per my mail, we can just take that out; OpenBSD defines it as "FCS in 
> header", but doesn't appear to use it, and I don't know of any other 
> system that uses it as "FCS in header".
> 
> Gerald, should we just remove the code that dissects 
> IEEE80211_RADIOTAP_FCS from the 1.0.1 Wireshark release, in preparation 
> for later releases interpreting presence bit 14 as RX flags?
> 

AirPcap uses the IEEE80211_RADIOTAP_FCS flag. We can remove it, but all 
the trace files produced with airpcap+radiotap until now include it.

Loris