cfg80211: Separate available antennas for RX and TX

As has been pointed out by Daniel Halperin some devices (e.g. Intel IWL5100)
can only TX from a subset of RX antennas, so use separate availability masks
for RX and TX.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 9 insertions, 3 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 924d60366233..bcc9f448ec4e 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1482,8 +1482,13 @@ struct ieee80211_txrx_stypes {
  *      transmitted through nl80211, points to an array indexed by interface
  *      type
  *
- * @available_antennas: bitmap of antennas which are available to configure.
- *      antenna configuration commands will be rejected unless this is set.
+ * @available_antennas_tx: bitmap of antennas which are available to be
+ *      configured as TX antennas. Antenna configuration commands will be
+ *      rejected unless this or @available_antennas_rx is set.
+ *
+ * @available_antennas_rx: bitmap of antennas which are available to be
+ *      configured as RX antennas. Antenna configuration commands will be
+ *      rejected unless this or @available_antennas_tx is set.
  *
  * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation
  *      may request, if implemented.
@@ -1528,7 +1533,8 @@ struct wiphy {
 
         u8 max_num_pmkids;
 
-        u32 available_antennas;
+        u32 available_antennas_tx;
+        u32 available_antennas_rx;
 
         /* If multiple wiphys are registered and you're handed e.g.
          * a regular netdev with assigned ieee80211_ptr, you won't