Index: head/sys/dev/hyperv/netvsc/hv_net_vsc.h
===================================================================
--- head/sys/dev/hyperv/netvsc/hv_net_vsc.h
+++ head/sys/dev/hyperv/netvsc/hv_net_vsc.h
@@ -168,6 +168,7 @@
 	struct buf_ring	*hn_mbuf_br;
 	int		hn_oactive;
 	int		hn_tx_idx;
+	int		hn_tx_flags;
 
 	struct mtx	hn_tx_lock;
 	struct hn_softc	*hn_sc;
@@ -194,10 +195,10 @@
 	struct hn_txdesc *hn_txdesc;
 	bus_dma_tag_t	hn_tx_rndis_dtag;
 	struct sysctl_oid *hn_tx_sysctl_tree;
-	int		hn_tx_flags;
 } __aligned(CACHE_LINE_SIZE);
 
 #define HN_TX_FLAG_ATTACHED	0x1
+#define HN_TX_FLAG_HASHVAL	0x2	/* support HASHVAL pktinfo */
 
 /*
  * Device-specific softc structure
Index: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
===================================================================
--- head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
+++ head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
@@ -1006,14 +1006,16 @@
 	pkt->rm_pktinfooffset = sizeof(*pkt);
 	pkt->rm_pktinfolen = 0;
 
-	/*
-	 * Set the hash value for this packet, so that the host could
-	 * dispatch the TX done event for this packet back to this TX
-	 * ring's channel.
-	 */
-	pi_data = hn_rndis_pktinfo_append(pkt, HN_RNDIS_PKT_LEN,
-	    HN_NDIS_HASH_VALUE_SIZE, HN_NDIS_PKTINFO_TYPE_HASHVAL);
-	*pi_data = txr->hn_tx_idx;
+	if (txr->hn_tx_flags & HN_TX_FLAG_HASHVAL) {
+		/*
+		 * Set the hash value for this packet, so that the host could
+		 * dispatch the TX done event for this packet back to this TX
+		 * ring's channel.
+		 */
+		pi_data = hn_rndis_pktinfo_append(pkt, HN_RNDIS_PKT_LEN,
+		    HN_NDIS_HASH_VALUE_SIZE, HN_NDIS_PKTINFO_TYPE_HASHVAL);
+		*pi_data = txr->hn_tx_idx;
+	}
 
 	if (m_head->m_flags & M_VLANTAG) {
 		pi_data = hn_rndis_pktinfo_append(pkt, HN_RNDIS_PKT_LEN,
@@ -2920,6 +2922,12 @@
 
 	for (i = 0; i < sc->hn_tx_ring_cnt; ++i)
 		sc->hn_tx_ring[i].hn_csum_assist = csum_assist;
+
+	if (sc->hn_ndis_ver >= HN_NDIS_VERSION_6_30) {
+		/* Support HASHVAL pktinfo on TX path. */
+		for (i = 0; i < sc->hn_tx_ring_cnt; ++i)
+			sc->hn_tx_ring[i].hn_tx_flags |= HN_TX_FLAG_HASHVAL;
+	}
 }
 
 static void