diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index e48c334a1a986322c59ecc826c53b50f2b542729..83e640814256514ca7b29d94a6980ab44b87de0c 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -73,6 +73,7 @@ MODULE_PARM_DESC(tx_sgl, "Minimum number of frags when using dma_map_sg() to opt
 #define HNS3_OUTER_VLAN_TAG	2
 
 #define HNS3_MIN_TX_LEN		33U
+#define HNS3_MIN_TUN_PKT_LEN	65U
 
 /* hns3_pci_tbl - PCI Device ID Table
  *
@@ -1424,8 +1425,11 @@ static int hns3_set_l2l3l4(struct sk_buff *skb, u8 ol4_proto,
 			       l4.tcp->doff);
 		break;
 	case IPPROTO_UDP:
-		if (hns3_tunnel_csum_bug(skb))
-			return skb_checksum_help(skb);
+		if (hns3_tunnel_csum_bug(skb)) {
+			int ret = skb_put_padto(skb, HNS3_MIN_TUN_PKT_LEN);
+
+			return ret ? ret : skb_checksum_help(skb);
+		}
 
 		hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1);
 		hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L4T_S,