diff --git a/sys/dev/netmap/netmap.c b/sys/dev/netmap/netmap.c
index 8b62dec9888..274a7d79d3f 100644
--- a/sys/dev/netmap/netmap.c
+++ b/sys/dev/netmap/netmap.c
@@ -1050,7 +1050,7 @@ netmap_rxsync_from_host(struct netmap_adapter *na, struct thread *td, void *pwai
 	(void)pwait;	/* disable unused warnings */
 	(void)td;
 
-	mtx_lock_spin(&q->lock);
+	mbq_lock(q);
 
 	/* First part: import newly received packets */
 	n = mbq_len(q);
@@ -1092,7 +1092,7 @@ netmap_rxsync_from_host(struct netmap_adapter *na, struct thread *td, void *pwai
 	if (kring->rcur == kring->rtail && td) /* no bufs available */
 		selrecord(td, &kring->si);
 
-	mtx_unlock_spin(&q->lock);
+	mbq_unlock(q);
 	return ret;
 }
 
@@ -2459,7 +2459,7 @@ netmap_transmit(struct ifnet *ifp, struct mbuf *m)
 	 * not possible on Linux).
 	 * Also avoid overflowing the queue.
 	 */
-	mtx_lock_spin(&q->lock);
+	mbq_lock(q);
 
         space = kring->nr_hwtail - kring->nr_hwcur;
         if (space < 0)
@@ -2476,7 +2476,7 @@ netmap_transmit(struct ifnet *ifp, struct mbuf *m)
 		m = NULL;
 		error = 0;
 	}
-	mtx_unlock_spin(&q->lock);
+	mbq_unlock(q);
 
 done:
 	if (m)
diff --git a/sys/dev/netmap/netmap_mbq.c b/sys/dev/netmap/netmap_mbq.c
index 86f0bb79fd2..503f5a13aa9 100644
--- a/sys/dev/netmap/netmap_mbq.c
+++ b/sys/dev/netmap/netmap_mbq.c
@@ -76,9 +76,9 @@ static inline void __mbq_enqueue(struct mbq *q, struct mbuf *m)
 
 void mbq_safe_enqueue(struct mbq *q, struct mbuf *m)
 {
-    mtx_lock_spin(&q->lock);
+    mbq_lock(q);
     __mbq_enqueue(q, m);
-    mtx_unlock_spin(&q->lock);
+    mbq_unlock(q);
 }
 
 
@@ -110,9 +110,9 @@ struct mbuf *mbq_safe_dequeue(struct mbq *q)
 {
     struct mbuf *ret;
 
-    mtx_lock_spin(&q->lock);
+    mbq_lock(q);
     ret =  __mbq_dequeue(q);
-    mtx_unlock_spin(&q->lock);
+    mbq_unlock(q);
 
     return ret;
 }
diff --git a/sys/dev/netmap/netmap_mbq.h b/sys/dev/netmap/netmap_mbq.h
index d273d8a8fa2..a011c4c7716 100644
--- a/sys/dev/netmap/netmap_mbq.h
+++ b/sys/dev/netmap/netmap_mbq.h
@@ -62,7 +62,17 @@ void mbq_enqueue(struct mbq *q, struct mbuf *m);
 struct mbuf *mbq_dequeue(struct mbq *q);
 void mbq_purge(struct mbq *q);
 
-/* XXX missing mbq_lock() and mbq_unlock */
+static inline void
+mbq_lock(struct mbq *q)
+{
+	mtx_lock_spin(&q->lock);
+}
+
+static inline void
+mbq_unlock(struct mbq *q)
+{
+	mtx_unlock_spin(&q->lock);
+}
 
 void mbq_safe_init(struct mbq *q);
 void mbq_safe_destroy(struct mbq *q);