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From: Johannes Berg <johannes-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>
To: "radiotap-sUITvd46vNxg9hUCZPvPmw@public.gmane.org"
	<radiotap-sUITvd46vNxg9hUCZPvPmw@public.gmane.org>
Subject: Re: multi-antenna handling
Date: Mon, 08 Jul 2013 10:59:12 +0200	[thread overview]
Message-ID: <1373273952.8312.7.camel@jlt4.sipsolutions.net> (raw)
In-Reply-To: <1345481425.4459.46.camel-8upI4CBIZJIJvtFkdXX2HixXY32XiHfO@public.gmane.org>

On Mon, 2012-08-20 at 18:50 +0200, Johannes Berg wrote:

> I'm planning to modify this (in Linux) to include, where available,
> antenna index & per-antenna signal information by duplicating the
> radiotap namespace for each antenna, so that the header would, for
> example, read as follows for a 3x3 devices:
> 
>  * ... TSF, Flags, Rate, Channel, ...
>  * antenna signal: -40 dBm
>  * antenna: 0
>  * ... MCS, A-MPDU status, ...
>  * antenna signal: -45 dBm
>  * antenna: 1
>  * antenna signal: -43 dBm
>  * antenna: 2

FWIW, I've now implemented this in Linux (in mac80211), although I start
a new radiotap namespace for each antenna, separate from the first one,
so you'll see

 * any of: TSF, flags, rate, channel, MCS, a-mpdu, VHT, ...
(new radiotap namespace)
 * ant signal: -40 dBm
 * anntenna: 0
(new radiotap namespace)
 * ant signal: -45 dBm
 * anntenna: 1
... for however many antennas/chains there are.

johannes

  parent reply	other threads:[~2013-07-08  8:59 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-20 16:50 multi-antenna handling Johannes Berg
     [not found] ` <1345481425.4459.46.camel-8upI4CBIZJIJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2013-07-08  8:59   ` Johannes Berg [this message]
     [not found]     ` <1373273952.8312.7.camel-8Nb76shvtaUJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2014-06-25  1:53       ` Guy Harris
     [not found]         ` <C7AC152F-CCC4-48E7-B752-71655EFD0C58-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org>
2014-06-25  7:04           ` Johannes Berg
     [not found]             ` <1403679889.4140.2.camel-8Nb76shvtaUJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2014-06-25 13:09               ` Matteo Cypriani
     [not found]                 ` <20140625090901.fa121a689f823f3af1db1e3a-yxGd9NVxpOI@public.gmane.org>
2014-06-25 15:11                   ` Johannes Berg
     [not found]                     ` <1403709105.4140.13.camel-8Nb76shvtaUJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2014-06-26  2:07                       ` Guy Harris
     [not found]                         ` <636CB894-79D9-4CC3-B820-833761A9666D-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org>
2014-06-26  6:20                           ` Johannes Berg
     [not found]                             ` <1403763600.4131.3.camel-8Nb76shvtaUJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2014-06-26  8:24                               ` Felix Fietkau
2018-12-30 21:47                               ` "Overall" and per-chain signal/noise values (was Re: multi-antenna handling) Guy Harris
     [not found]                                 ` <0836AF8F-37B1-4E52-B14C-7D7B31D4C5E8-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org>
2019-01-15 13:19                                   ` Johannes Berg

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