Re: use of radiotap bit 14?

Johannes Berg <[email protected]> Thu, 19 Jun 2008 22:06:53 +0200
Newsgroups	org.netbsd.radiotap
Message-ID	<[email protected]>
On Thu, 2008-06-19 at 14:39 -0500, David Young wrote:
> On Thu, Jun 19, 2008 at 09:10:33PM +0200, Johannes Berg wrote:
> > On Thu, 2008-06-19 at 13:56 -0500, David Young wrote:
> > 
> > > I favor these assignments:
> > > 
> > > 14 /RX flags
> > > 15 /TX flags
> > > 16 /RTS retries
> > > 17 /data retries
> > > 18 /XChannel 
> > 
> > That'd be great to me. Want me to declare them that on the wiki, move
> > them over to the defined-fields and add the other ones as "suggested
> > fields" without assigned numbers?
> 
> Well, you and I agree, but let us give everyone else a chance. :-)

Heh yeah, sure.

> Let's do this:
> 
> 1 define the alignment, width, interpretation of the fields (I believe
>   this is done, somewhere.)

http://www.radiotap.org/suggested-fields
click any of the links, there you have it.

I haven't decided yet whether radiotap.org should maintain a header
file. It would be nice for source-code interoperability, but in practice
the different OSes use different header files already...

> 2 produce implementations wireshark and/or tcpdump and for one or
>   more driver

Linux is actually shipping code now that will produce RX_FLAGS (in bit
14) with the IEEE80211_RADIOTAP_F_RX_BADFCS flag, but there's
IEEE80211_RADIOTAP_F_BADFCS in wireshark so maybe we should use that
instead.

> 3 post fields and code here, and on the wiki

I can do that.

> 4 leave 7 days for discussion (ordinarily, this should be longer)
> 5 if the proposal withstands discussion, re-post proposal in final form
> 6 adopt the proposal in 7 days if there are no further objections
>   (discussion is over, however, 7 days lets everyone verify that the
>   proposal and amendments, as discussed, have become the standard)

Sounds good. Should we document that process with a normal period of a
month before adoption after discussion/reposts?

johannes
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