Index: head/sys/dev/hyperv/netvsc/if_hn.c
===================================================================
--- head/sys/dev/hyperv/netvsc/if_hn.c
+++ head/sys/dev/hyperv/netvsc/if_hn.c
@@ -504,7 +504,7 @@
 {
 	int i;
 
-	for (i = 0; i < sc->hn_rx_ring_inuse; ++i)
+	for (i = 0; i < sc->hn_rx_ring_cnt; ++i)
 		sc->hn_rx_ring[i].hn_lro.lro_length_lim = lenlim;
 }
 #endif
@@ -2554,7 +2554,7 @@
 	 */
 	--ackcnt;
 	HN_LOCK(sc);
-	for (i = 0; i < sc->hn_rx_ring_inuse; ++i)
+	for (i = 0; i < sc->hn_rx_ring_cnt; ++i)
 		sc->hn_rx_ring[i].hn_lro.lro_ackcnt_lim = ackcnt;
 	HN_UNLOCK(sc);
 	return 0;
@@ -2578,7 +2578,7 @@
 		return error;
 
 	HN_LOCK(sc);
-	for (i = 0; i < sc->hn_rx_ring_inuse; ++i) {
+	for (i = 0; i < sc->hn_rx_ring_cnt; ++i) {
 		struct hn_rx_ring *rxr = &sc->hn_rx_ring[i];
 
 		if (on)
@@ -2646,7 +2646,7 @@
 	uint64_t stat;
 
 	stat = 0;
-	for (i = 0; i < sc->hn_rx_ring_inuse; ++i) {
+	for (i = 0; i < sc->hn_rx_ring_cnt; ++i) {
 		rxr = &sc->hn_rx_ring[i];
 		stat += *((uint64_t *)((uint8_t *)rxr + ofs));
 	}
@@ -2656,7 +2656,7 @@
 		return error;
 
 	/* Zero out this stat. */
-	for (i = 0; i < sc->hn_rx_ring_inuse; ++i) {
+	for (i = 0; i < sc->hn_rx_ring_cnt; ++i) {
 		rxr = &sc->hn_rx_ring[i];
 		*((uint64_t *)((uint8_t *)rxr + ofs)) = 0;
 	}
@@ -2674,7 +2674,7 @@
 	u_long stat;
 
 	stat = 0;
-	for (i = 0; i < sc->hn_rx_ring_inuse; ++i) {
+	for (i = 0; i < sc->hn_rx_ring_cnt; ++i) {
 		rxr = &sc->hn_rx_ring[i];
 		stat += *((u_long *)((uint8_t *)rxr + ofs));
 	}
@@ -2684,7 +2684,7 @@
 		return error;
 
 	/* Zero out this stat. */
-	for (i = 0; i < sc->hn_rx_ring_inuse; ++i) {
+	for (i = 0; i < sc->hn_rx_ring_cnt; ++i) {
 		rxr = &sc->hn_rx_ring[i];
 		*((u_long *)((uint8_t *)rxr + ofs)) = 0;
 	}
@@ -2700,7 +2700,7 @@
 	u_long stat;
 
 	stat = 0;
-	for (i = 0; i < sc->hn_tx_ring_inuse; ++i) {
+	for (i = 0; i < sc->hn_tx_ring_cnt; ++i) {
 		txr = &sc->hn_tx_ring[i];
 		stat += *((u_long *)((uint8_t *)txr + ofs));
 	}
@@ -2710,7 +2710,7 @@
 		return error;
 
 	/* Zero out this stat. */
-	for (i = 0; i < sc->hn_tx_ring_inuse; ++i) {
+	for (i = 0; i < sc->hn_tx_ring_cnt; ++i) {
 		txr = &sc->hn_tx_ring[i];
 		*((u_long *)((uint8_t *)txr + ofs)) = 0;
 	}
@@ -2732,7 +2732,7 @@
 		return error;
 
 	HN_LOCK(sc);
-	for (i = 0; i < sc->hn_tx_ring_inuse; ++i) {
+	for (i = 0; i < sc->hn_tx_ring_cnt; ++i) {
 		txr = &sc->hn_tx_ring[i];
 		*((int *)((uint8_t *)txr + ofs)) = conf;
 	}
@@ -3603,7 +3603,7 @@
 {
 	int i;
 
-	for (i = 0; i < sc->hn_tx_ring_inuse; ++i)
+	for (i = 0; i < sc->hn_tx_ring_cnt; ++i)
 		sc->hn_tx_ring[i].hn_chim_size = chim_size;
 }