diff --git a/sys/dev/ena/ena.h b/sys/dev/ena/ena.h
--- a/sys/dev/ena/ena.h
+++ b/sys/dev/ena/ena.h
@@ -263,7 +263,7 @@
 	bus_dmamap_t dmamap;
 
 	/* Used to detect missing tx packets */
-	struct bintime timestamp;
+	sbintime_t timestamp;
 	bool print_once;
 
 #ifdef DEV_NETMAP
diff --git a/sys/dev/ena/ena.c b/sys/dev/ena/ena.c
--- a/sys/dev/ena/ena.c
+++ b/sys/dev/ena/ena.c
@@ -3213,7 +3213,7 @@
 {
 	uint32_t missed_tx = 0, new_missed_tx = 0;
 	device_t pdev = adapter->pdev;
-	struct bintime curtime, time;
+	sbintime_t curtime;
 	struct ena_tx_buffer *tx_buf;
 	int time_since_last_cleanup;
 	int missing_tx_comp_to;
@@ -3222,17 +3222,18 @@
 	enum ena_regs_reset_reason_types reset_reason = ENA_REGS_RESET_MISS_TX_CMPL;
 	bool cleanup_scheduled, cleanup_running;
 
-	getbinuptime(&curtime);
+	curtime = getsbinuptime();
 
 	for (i = 0; i < tx_ring->ring_size; i++) {
+		sbintime_t ts;
+
 		tx_buf = &tx_ring->tx_buffer_info[i];
 
-		if (bintime_isset(&tx_buf->timestamp) == 0)
+		ts = atomic_load_64(&tx_buf->timestamp);
+		if (ts == 0)
 			continue;
 
-		time = curtime;
-		bintime_sub(&time, &tx_buf->timestamp);
-		time_offset = bttosbt(time);
+		time_offset = curtime - ts;
 
 		if (unlikely(!atomic_load_8(&tx_ring->first_interrupt) &&
 		    time_offset > 2 * adapter->missing_tx_timeout)) {
diff --git a/sys/dev/ena/ena_datapath.c b/sys/dev/ena/ena_datapath.c
--- a/sys/dev/ena/ena_datapath.c
+++ b/sys/dev/ena/ena_datapath.c
@@ -274,7 +274,7 @@
 		mbuf = tx_info->mbuf;
 
 		tx_info->mbuf = NULL;
-		bintime_clear(&tx_info->timestamp);
+		atomic_store_64(&tx_info->timestamp, 0);
 
 		bus_dmamap_sync(adapter->tx_buf_tag, tx_info->dmamap,
 		    BUS_DMASYNC_POSTWRITE);
@@ -1055,7 +1055,7 @@
 	counter_exit();
 
 	tx_info->tx_descs = nb_hw_desc;
-	getbinuptime(&tx_info->timestamp);
+	atomic_store_64(&tx_info->timestamp, getsbinuptime());
 	tx_info->print_once = true;
 
 	tx_ring->next_to_use = ENA_TX_RING_IDX_NEXT(next_to_use,