mac80211: add debugfs file for last ack signal

Add a debugfs file showing the signal strength
of the ack frame that is received for the
currently sent tx packet

Signed-off-by: Saravana <saravanad@posedge.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 6835cea4e402..dce76939f526 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -250,6 +250,7 @@ struct sta_ampdu_mlme {
  * @rx_dropped: number of dropped MPDUs from this STA
  * @last_signal: signal of last received frame from this STA
  * @avg_signal: moving average of signal of received frames from this STA
+ * @last_ack_signal: signal of last received Ack frame from this STA
  * @last_seq_ctrl: last received seq/frag number from this STA (per RX queue)
  * @tx_filtered_count: number of frames the hardware filtered for this STA
  * @tx_retry_failed: number of frames that failed retry
@@ -329,6 +330,7 @@ struct sta_info {
         unsigned long rx_dropped;
         int last_signal;
         struct ewma avg_signal;
+        int last_ack_signal;
         /* Plus 1 for non-QoS frames */
         __le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1];