diff --git a/doc/guides/rel_notes/release_21_05.rst b/doc/guides/rel_notes/release_21_05.rst
index 1d85942..c3324d8 100644
--- a/doc/guides/rel_notes/release_21_05.rst
+++ b/doc/guides/rel_notes/release_21_05.rst
@@ -61,6 +61,7 @@ New Features
   * Added support for freeing Tx mbuf on demand.
   * Added support for copper port in Kunpeng930.
   * Added support for runtime config to select IO burst function.
+  * Added support for outer UDP checksum in Kunpeng930.
 
 * **Updated NXP DPAA2 driver.**
 
diff --git a/drivers/net/hns3/hns3_cmd.c b/drivers/net/hns3/hns3_cmd.c
index 8b9f075..03f8048 100644
--- a/drivers/net/hns3/hns3_cmd.c
+++ b/drivers/net/hns3/hns3_cmd.c
@@ -433,6 +433,9 @@ hns3_parse_capability(struct hns3_hw *hw,
 	if (hns3_get_bit(caps, HNS3_CAPS_RXD_ADV_LAYOUT_B))
 		hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_RXD_ADV_LAYOUT_B,
 			     1);
+	if (hns3_get_bit(caps, HNS3_CAPS_UDP_TUNNEL_CSUM_B))
+		hns3_set_bit(hw->capability,
+				HNS3_DEV_SUPPORT_OUTER_UDP_CKSUM_B, 1);
 }
 
 static uint32_t
diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 28aa27a..3949153 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -2620,6 +2620,9 @@ hns3_dev_infos_get(struct rte_eth_dev *eth_dev, struct rte_eth_dev_info *info)
 				 DEV_TX_OFFLOAD_MBUF_FAST_FREE |
 				 hns3_txvlan_cap_get(hw));
 
+	if (hns3_dev_outer_udp_cksum_supported(hw))
+		info->tx_offload_capa |= DEV_TX_OFFLOAD_OUTER_UDP_CKSUM;
+
 	if (hns3_dev_indep_txrx_supported(hw))
 		info->dev_capa = RTE_ETH_DEV_CAPA_RUNTIME_RX_QUEUE_SETUP |
 				 RTE_ETH_DEV_CAPA_RUNTIME_TX_QUEUE_SETUP;
diff --git a/drivers/net/hns3/hns3_ethdev.h b/drivers/net/hns3/hns3_ethdev.h
index ec4b475..0fc0a1c 100644
--- a/drivers/net/hns3/hns3_ethdev.h
+++ b/drivers/net/hns3/hns3_ethdev.h
@@ -798,6 +798,7 @@ enum {
 #define HNS3_DEV_SUPPORT_INDEP_TXRX_B		0x6
 #define HNS3_DEV_SUPPORT_STASH_B		0x7
 #define HNS3_DEV_SUPPORT_RXD_ADV_LAYOUT_B	0x9
+#define HNS3_DEV_SUPPORT_OUTER_UDP_CKSUM_B	0xA
 
 #define hns3_dev_dcb_supported(hw) \
 	hns3_get_bit((hw)->capability, HNS3_DEV_SUPPORT_DCB_B)
@@ -831,6 +832,9 @@ enum {
 #define hns3_dev_rxd_adv_layout_supported(hw) \
 	hns3_get_bit((hw)->capability, HNS3_DEV_SUPPORT_RXD_ADV_LAYOUT_B)
 
+#define hns3_dev_outer_udp_cksum_supported(hw) \
+	hns3_get_bit((hw)->capability, HNS3_DEV_SUPPORT_OUTER_UDP_CKSUM_B)
+
 #define HNS3_DEV_PRIVATE_TO_HW(adapter) \
 	(&((struct hns3_adapter *)adapter)->hw)
 #define HNS3_DEV_PRIVATE_TO_PF(adapter) \
diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index f3eaefb..e1e41b8 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -988,6 +988,9 @@ hns3vf_dev_infos_get(struct rte_eth_dev *eth_dev, struct rte_eth_dev_info *info)
 				 DEV_TX_OFFLOAD_MBUF_FAST_FREE |
 				 hns3_txvlan_cap_get(hw));
 
+	if (hns3_dev_outer_udp_cksum_supported(hw))
+		info->tx_offload_capa |= DEV_TX_OFFLOAD_OUTER_UDP_CKSUM;
+
 	if (hns3_dev_indep_txrx_supported(hw))
 		info->dev_capa = RTE_ETH_DEV_CAPA_RUNTIME_RX_QUEUE_SETUP |
 				 RTE_ETH_DEV_CAPA_RUNTIME_TX_QUEUE_SETUP;
diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index f5c7d71..7529279 100644
--- a/drivers/net/hns3/hns3_rxtx.c
+++ b/drivers/net/hns3/hns3_rxtx.c
@@ -2967,7 +2967,7 @@ hns3_fill_first_desc(struct hns3_tx_queue *txq, struct hns3_desc *desc,
 	hdr_len += (ol_flags & PKT_TX_TUNNEL_MASK) ?
 			   rxm->outer_l2_len + rxm->outer_l3_len : 0;
 	paylen = rxm->pkt_len - hdr_len;
-	desc->tx.paylen = rte_cpu_to_le_32(paylen);
+	desc->tx.paylen_fd_dop_ol4cs |= rte_cpu_to_le_32(paylen);
 	hns3_set_tso(desc, paylen, rxm);
 
 	/*
@@ -3204,8 +3204,10 @@ hns3_parse_tunneling_params(struct hns3_tx_queue *txq, struct rte_mbuf *m,
 {
 	struct hns3_desc *tx_ring = txq->tx_ring;
 	struct hns3_desc *desc = &tx_ring[tx_desc_id];
+	uint64_t ol_flags = m->ol_flags;
 	uint32_t tmp_outer = 0;
 	uint32_t tmp_inner = 0;
+	uint32_t tmp_ol4cs;
 	int ret;
 
 	/*
@@ -3215,7 +3217,7 @@ hns3_parse_tunneling_params(struct hns3_tx_queue *txq, struct rte_mbuf *m,
 	 * calculations, the length of the L2 header include the outer and
 	 * inner, will be filled during the parsing of tunnel packects.
 	 */
-	if (!(m->ol_flags & PKT_TX_TUNNEL_MASK)) {
+	if (!(ol_flags & PKT_TX_TUNNEL_MASK)) {
 		/*
 		 * For non tunnel type the tunnel type id is 0, so no need to
 		 * assign a value to it. Only the inner(normal) L2 header length
@@ -3230,7 +3232,8 @@ hns3_parse_tunneling_params(struct hns3_tx_queue *txq, struct rte_mbuf *m,
 		 * inner l2_len. It would lead a cksum error. So driver has to
 		 * calculate the header length.
 		 */
-		if (unlikely(!(m->ol_flags & PKT_TX_OUTER_IP_CKSUM) &&
+		if (unlikely(!(ol_flags &
+			(PKT_TX_OUTER_IP_CKSUM | PKT_TX_OUTER_UDP_CKSUM)) &&
 					m->outer_l2_len == 0)) {
 			struct rte_net_hdr_lens hdr_len;
 			(void)rte_net_get_ptype(m, &hdr_len,
@@ -3247,6 +3250,9 @@ hns3_parse_tunneling_params(struct hns3_tx_queue *txq, struct rte_mbuf *m,
 
 	desc->tx.ol_type_vlan_len_msec = rte_cpu_to_le_32(tmp_outer);
 	desc->tx.type_cs_vlan_tso_len = rte_cpu_to_le_32(tmp_inner);
+	tmp_ol4cs = ol_flags & PKT_TX_OUTER_UDP_CKSUM ?
+			BIT(HNS3_TXD_OL4CS_B) : 0;
+	desc->tx.paylen_fd_dop_ol4cs = rte_cpu_to_le_32(tmp_ol4cs);
 
 	return 0;
 }
@@ -3376,31 +3382,78 @@ hns3_pkt_need_linearized(struct rte_mbuf *tx_pkts, uint32_t bd_num,
 	return false;
 }
 
+static bool
+hns3_outer_ipv4_cksum_prepared(struct rte_mbuf *m, uint64_t ol_flags,
+				uint32_t *l4_proto)
+{
+	struct rte_ipv4_hdr *ipv4_hdr;
+	ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct rte_ipv4_hdr *,
+					   m->outer_l2_len);
+	if (ol_flags & PKT_TX_OUTER_IP_CKSUM)
+		ipv4_hdr->hdr_checksum = 0;
+	if (ol_flags & PKT_TX_OUTER_UDP_CKSUM) {
+		struct rte_udp_hdr *udp_hdr;
+		/*
+		 * If OUTER_UDP_CKSUM is support, HW can caclulate the pseudo
+		 * header for TSO packets
+		 */
+		if (ol_flags & PKT_TX_TCP_SEG)
+			return true;
+		udp_hdr = rte_pktmbuf_mtod_offset(m, struct rte_udp_hdr *,
+				m->outer_l2_len + m->outer_l3_len);
+		udp_hdr->dgram_cksum = rte_ipv4_phdr_cksum(ipv4_hdr, ol_flags);
+
+		return true;
+	}
+	*l4_proto = ipv4_hdr->next_proto_id;
+	return false;
+}
+
+static bool
+hns3_outer_ipv6_cksum_prepared(struct rte_mbuf *m, uint64_t ol_flags,
+				uint32_t *l4_proto)
+{
+	struct rte_ipv6_hdr *ipv6_hdr;
+	ipv6_hdr = rte_pktmbuf_mtod_offset(m, struct rte_ipv6_hdr *,
+					   m->outer_l2_len);
+	if (ol_flags & PKT_TX_OUTER_UDP_CKSUM) {
+		struct rte_udp_hdr *udp_hdr;
+		/*
+		 * If OUTER_UDP_CKSUM is support, HW can caclulate the pseudo
+		 * header for TSO packets
+		 */
+		if (ol_flags & PKT_TX_TCP_SEG)
+			return true;
+		udp_hdr = rte_pktmbuf_mtod_offset(m, struct rte_udp_hdr *,
+				m->outer_l2_len + m->outer_l3_len);
+		udp_hdr->dgram_cksum = rte_ipv6_phdr_cksum(ipv6_hdr, ol_flags);
+
+		return true;
+	}
+	*l4_proto = ipv6_hdr->proto;
+	return false;
+}
+
 static void
 hns3_outer_header_cksum_prepare(struct rte_mbuf *m)
 {
 	uint64_t ol_flags = m->ol_flags;
 	uint32_t paylen, hdr_len, l4_proto;
+	struct rte_udp_hdr *udp_hdr;
 
 	if (!(ol_flags & (PKT_TX_OUTER_IPV4 | PKT_TX_OUTER_IPV6)))
 		return;
 
 	if (ol_flags & PKT_TX_OUTER_IPV4) {
-		struct rte_ipv4_hdr *ipv4_hdr;
-		ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct rte_ipv4_hdr *,
-						   m->outer_l2_len);
-		l4_proto = ipv4_hdr->next_proto_id;
-		if (ol_flags & PKT_TX_OUTER_IP_CKSUM)
-			ipv4_hdr->hdr_checksum = 0;
+		if (hns3_outer_ipv4_cksum_prepared(m, ol_flags, &l4_proto))
+			return;
 	} else {
-		struct rte_ipv6_hdr *ipv6_hdr;
-		ipv6_hdr = rte_pktmbuf_mtod_offset(m, struct rte_ipv6_hdr *,
-						   m->outer_l2_len);
-		l4_proto = ipv6_hdr->proto;
+		if (hns3_outer_ipv6_cksum_prepared(m, ol_flags, &l4_proto))
+			return;
 	}
+
 	/* driver should ensure the outer udp cksum is 0 for TUNNEL TSO */
 	if (l4_proto == IPPROTO_UDP && (ol_flags & PKT_TX_TCP_SEG)) {
-		struct rte_udp_hdr *udp_hdr;
 		hdr_len = m->l2_len + m->l3_len + m->l4_len;
 		hdr_len += m->outer_l2_len + m->outer_l3_len;
 		paylen = m->pkt_len - hdr_len;
@@ -3686,7 +3739,7 @@ hns3_tx_setup_4bd(struct hns3_desc *txdp, struct rte_mbuf **pkts)
 		dma_addr = rte_mbuf_data_iova(*pkts);
 		txdp->addr = rte_cpu_to_le_64(dma_addr);
 		txdp->tx.send_size = rte_cpu_to_le_16((*pkts)->data_len);
-		txdp->tx.paylen = 0;
+		txdp->tx.paylen_fd_dop_ol4cs = 0;
 		txdp->tx.type_cs_vlan_tso_len = 0;
 		txdp->tx.ol_type_vlan_len_msec = 0;
 		txdp->tx.tp_fe_sc_vld_ra_ri = rte_cpu_to_le_16(bd_flag);
@@ -3702,7 +3755,7 @@ hns3_tx_setup_1bd(struct hns3_desc *txdp, struct rte_mbuf **pkts)
 	dma_addr = rte_mbuf_data_iova(*pkts);
 	txdp->addr = rte_cpu_to_le_64(dma_addr);
 	txdp->tx.send_size = rte_cpu_to_le_16((*pkts)->data_len);
-	txdp->tx.paylen = 0;
+	txdp->tx.paylen_fd_dop_ol4cs = 0;
 	txdp->tx.type_cs_vlan_tso_len = 0;
 	txdp->tx.ol_type_vlan_len_msec = 0;
 	txdp->tx.tp_fe_sc_vld_ra_ri = rte_cpu_to_le_16(bd_flag);
diff --git a/drivers/net/hns3/hns3_rxtx.h b/drivers/net/hns3/hns3_rxtx.h
index 9adeb24..cd04200 100644
--- a/drivers/net/hns3/hns3_rxtx.h
+++ b/drivers/net/hns3/hns3_rxtx.h
@@ -149,6 +149,7 @@
 #define HNS3_TXD_MSS_S				0
 #define HNS3_TXD_MSS_M				(0x3fff << HNS3_TXD_MSS_S)
 
+#define HNS3_TXD_OL4CS_B			22
 #define HNS3_L2_LEN_UNIT			1UL
 #define HNS3_L3_LEN_UNIT			2UL
 #define HNS3_L4_LEN_UNIT			2UL
@@ -234,7 +235,7 @@ struct hns3_desc {
 				};
 			};
 
-			uint32_t paylen;
+			uint32_t paylen_fd_dop_ol4cs;
 			uint16_t tp_fe_sc_vld_ra_ri;
 			uint16_t mss;
 		} tx;
@@ -503,6 +504,7 @@ struct hns3_queue_info {
 };
 
 #define HNS3_TX_CKSUM_OFFLOAD_MASK ( \
+	PKT_TX_OUTER_UDP_CKSUM | \
 	PKT_TX_OUTER_IP_CKSUM | \
 	PKT_TX_IP_CKSUM | \
 	PKT_TX_TCP_SEG | \
diff --git a/drivers/net/hns3/hns3_rxtx_vec_sve.c b/drivers/net/hns3/hns3_rxtx_vec_sve.c
index 2a22a1a..90e45c6 100644
--- a/drivers/net/hns3/hns3_rxtx_vec_sve.c
+++ b/drivers/net/hns3/hns3_rxtx_vec_sve.c
@@ -408,8 +408,9 @@ hns3_tx_fill_hw_ring_sve(struct hns3_tx_queue *txq,
 				(uint64_t *)&txdp->tx.outer_vlan_tag,
 				offsets, svdup_n_u64(0));
 		/* save offset 24~31byte of every BD */
-		svst1_scatter_u64offset_u64(pg, (uint64_t *)&txdp->tx.paylen,
-					    offsets, svdup_n_u64(valid_bit));
+		svst1_scatter_u64offset_u64(pg,
+				(uint64_t *)&txdp->tx.paylen_fd_dop_ol4cs,
+				offsets, svdup_n_u64(valid_bit));
 
 		/* Increment bytes counter */
 		uint32_t idx;
