Export the information which antennas are available for configuration as TX or
RX antennas via nl80211.
Signed-off-by: Bruno Randolf <br1@xxxxxxxxxxx>
---
v3: rebased and updated for separate RX and TX availablility
v2: rebased
---
include/linux/nl80211.h | 9 +++++++++
net/wireless/nl80211.c | 5 +++++
2 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 1cee56b..a6e1ec5 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -844,6 +844,12 @@ 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_TX: Bitmap of antennas which are available
+ * for configuration as TX antennas via the above parameters.
+ *
+ * @NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX: Bitmap of antennas which are available
+ * for configuration as RX antennas via the above parameters.
+ *
* @NL80211_ATTR_MCAST_RATE: Multicast tx rate (in 100 kbps) for IBSS
*
* @NL80211_ATTR_OFFCHANNEL_TX_OK: For management frame TX, the frame may be
@@ -1040,6 +1046,9 @@ enum nl80211_attrs {
NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
+ NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
+ NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 087397b..ad3ca7d 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -605,6 +605,11 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
+ dev->wiphy.available_antennas_tx);
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
+ dev->wiphy.available_antennas_rx);
+
if ((dev->wiphy.available_antennas_tx ||
dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
u32 tx_ant = 0, rx_ant = 0;
--
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