From: bruno randolf <bruno@thinktube.com>
To: Mattias Nissler <mattias.nissler@gmx.de>
Subject: Re: [PATCH] mac80211: include MAC timestamp in radiotap header
Date: Sat, 24 Nov 2007 18:36:04 +0900
Cc: Johannes Berg <johannes@sipsolutions.net>,
	Michael Wu <flamingice@sourmilk.net>,
	John Linville <linville@tuxdriver.com>,
	linux-wireless <linux-wireless@vger.kernel.org>
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On Saturday 24 November 2007 18:27:41 Mattias Nissler wrote:
> On Sat, 2007-11-24 at 09:34 +0100, Johannes Berg wrote:
> > On Sat, 2007-11-24 at 00:21 -0500, Michael Wu wrote:
> > > On Friday 23 November 2007 05:45:54 Johannes Berg wrote:
> > > > This makes mac80211 include the low-level MAC timestamp
> > > > in the radiotap header.
> > >
> > > No thanks. Not every driver supports reporting the timestamp and
> > > supporting timestamp/no timestamp in the default radiotap rx code makes
> > > it not so simple anymore.
> >
> > Uh, so how am I supposed to get the timestamp? Copy all the code into
> > b43 and make it generate the exact same radiotap header? That's pretty
> > crappy too.
>
> On rt2x00, we've just added a facility that dumps information about all
> frames received and transmitted at a very low level. We dump general
> information about the frame, the tx/rx descriptors and the packet. Maybe
> something similar would also be useful for b43?

that's not a solution if you want them per packet in the radiotap header.
kismet & wireshark use them as well as other applications.

bruno