mac80211: add support for showing the last rx bitrate

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index ca0b690..5768114 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -209,6 +209,8 @@
  * @rate_ctrl_priv: rate control private per-STA pointer
  * @last_tx_rate: rate used for last transmit, to report to userspace as
  *	"the" transmit rate
+ * @last_rx_rate_idx: rx status rate index of the last data packet
+ * @last_rx_rate_flag: rx status flag of the last data packet
  * @lock: used for locking all fields that require locking, see comments
  *	in the header file.
  * @flaglock: spinlock for flags accesses
@@ -311,6 +313,8 @@
 	unsigned long tx_bytes;
 	unsigned long tx_fragments;
 	struct ieee80211_tx_rate last_tx_rate;
+	int last_rx_rate_idx;
+	int last_rx_rate_flag;
 	u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1];
 
 	/*