Several of the Intel ones, I believe. For instance 4965 can RX with 3
antennas but can maybe only TX with A and B? Intel also has a 1x2
(5100 maybe?) chipset.
Dan
On Mon, Dec 13, 2010 at 6:31 PM, Bruno Randolf <br1@xxxxxxxxxxx> wrote:
> On Tue December 14 2010 11:23:09 Daniel Halperin wrote:
>> > diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
>> > index b8fa25d..63b603c 100644
>> > --- a/include/linux/nl80211.h
>> > +++ b/include/linux/nl80211.h
>> > @@ -841,6 +841,9 @@ enum nl80211_commands {
>> > * the hardware should not be configured to receive on this antenna.
>> > * For a more detailed descripton see @NL80211_ATTR_WIPHY_ANTENNA_TX.
>> > *
>> > + * @NL80211_ATTR_WIPHY_ANTENNA_AVAIL: Bitmap of antennas which are
>> > available for + * configuration via the above parameters.
>> > + *
>>
>> Not clear exactly what the point of this is -- there's no commit
>> message -- but should not this API distinguish between TX and RX?
>> E.g., several chipsets can only TX from a subset of RX antennas.
>
> This is just the nl80211 part of a patch that got merged earlier, the
> description of which has more info:
>
> https://patchwork.kernel.org/patch/389682/
>
> If it's necessary to distinguish between RX and TX it has to be done there
> too. Can you give us examples of these chipsets which you mentioned?
>
> bruno
>
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