Subject: Re: [question] ath9k: 11n monitor mode
From: Johannes Berg <johannes@sipsolutions.net>
To: Ming Lei <tom.leiming@gmail.com>
Cc: "Luis R. Rodriguez" <lrodriguez@atheros.com>,
	=?ISO-8859-1?Q?G=E1bor?= Stefanik <netrolller.3d@gmail.com>,
	ath9k-devel@lists.ath9k.org, linux-wireless@vger.kernel.org,
	Matteo Croce <matteo@openwrt.org>
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References: <d82e647a0911260557l5cf33449pe41f8902b6889891@mail.gmail.com>
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	 <d82e647a0911261737j2bb9d07fj453e7d43a8f2e2dd@mail.gmail.com>
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Date: Fri, 27 Nov 2009 10:43:20 +0100
Message-ID: <1259315000.5428.14.camel@johannes.local>
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On Fri, 2009-11-27 at 09:37 +0800, Ming Lei wrote:
> 2009/11/27 Luis R. Rodriguez <lrodriguez@atheros.com>:
> > 2009/11/26 G=C3=A1bor Stefanik <netrolller.3d@gmail.com>:
> >> I don't know exactly, but a while ago there was a discussion about how
> >> to represent HT rates in Radiotap. AFAIK mac80211 refuses to forward
> >> HT packets to monitor interfaces as they don't have a valid CCK or
> >> OFDM rate.
> >
> > Matteo added a suggested field for radiotap for MCS rates:
> >
> > http://www.radiotap.org/suggested-fields/MCS
>=20
> Oh, I see.
>=20
> Is there any patch which may let mac80211 forward HT packets to
> monitor interface now?
> If there is, where could I find it?

It will forward all frame that it gets from the driver, just not tell
you it was an HT frame in radiotap since there's no way to -- you'll see
a frame without rate information.

johannes

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