diff --git a/sys/dev/ath/if_athioctl.h b/sys/dev/ath/if_athioctl.h
index 065a49cb7f7..680694f8d2b 100644
--- a/sys/dev/ath/if_athioctl.h
+++ b/sys/dev/ath/if_athioctl.h
@@ -35,6 +35,16 @@
 #ifndef _DEV_ATH_ATHIOCTL_H
 #define _DEV_ATH_ATHIOCTL_H
 
+struct ath_tx_aggr_stats {
+	u_int32_t	aggr_pkts[64];
+	u_int32_t	aggr_single_pkt;
+	u_int32_t	aggr_nonbaw_pkt;
+	u_int32_t	aggr_aggr_pkt;
+	u_int32_t	aggr_baw_closed_single_pkt;
+	u_int32_t	aggr_low_hwq_single_pkt;
+	u_int32_t	aggr_sched_nopkt;
+};
+
 struct ath_stats {
 	u_int32_t	ast_watchdog;	/* device reset by watchdog */
 	u_int32_t	ast_hardware;	/* fatal hardware error interrupts */