On Wed, Jul 28, 2010 at 8:58 PM, Bruno Randolf <br1@xxxxxxxxxxx> wrote:
> diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
> index 2c87016..8a88921 100644
> --- a/include/linux/nl80211.h
> +++ b/include/linux/nl80211.h
> @@ -731,6 +731,28 @@ enum nl80211_commands {
> * This is used in association with @NL80211_ATTR_WIPHY_TX_POWER_SETTING
> * for non-automatic settings.
> *
> + * @NL80211_ATTR_WIPHY_ANTENNA_TX: Bitmap of allowed antennas for transmitting.
> + * This can be used to mask out antennas which are not attached or should
> + * not be used for transmitting. If an antenna is not selected in this
> + * bitmap the hardware is not allowed to transmit on this antenna.
> + *
> + * Each bit represents one antenna, starting with antenna 1 at the first
> + * bit. Depending on which antennas are selected in the bitmap, 802.11n
> + * drivers can derive which chainmasks to use (if all antennas belonging to
> + * a particular chain are disabled this chain should be disabled) and if
> + * a chain has diversity antennas wether diversity should be used or not.
> + * HT capabilities (STBC, TX Beamforming, Antenna selection) can be
> + * derived from the available chains after applying the antenna mask.
I don't want to do any work myself on drivers for this, can we have
cfg80211/mac80211 do this for us?
Luis
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