[PATCH V2 net-next 6/7] net: hns3: add a check for devcie's verion in hns3_tunnel_csum_bug()

[Huazhong Tan]

For the device whose version is above V3(include V3), the hardware
can do checksum offload for the non-tunnel udp packet, who has
a dest port as the IANA assigned. So add a check for devcie's verion
in hns3_tunnel_csum_bug().

Signed-off-by: Huazhong Tan <tanhuazh...@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c 
b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 3ad7f98..1798c0a 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -828,8 +828,16 @@ static int hns3_get_l4_protocol(struct sk_buff *skb, u8 
*ol4_proto,
  */
 static bool hns3_tunnel_csum_bug(struct sk_buff *skb)
 {
+       struct hns3_nic_priv *priv = netdev_priv(skb->dev);
+       struct hnae3_ae_dev *ae_dev = pci_get_drvdata(priv->ae_handle->pdev);
        union l4_hdr_info l4;
 
+       /* device version above V3(include V3), the hardware can
+        * do this checksum offload.
+        */
+       if (ae_dev->dev_version >= HNAE3_DEVICE_VERSION_V3)
+               return false;
+
        l4.hdr = skb_transport_header(skb);
 
        if (!(!skb->encapsulation &&
-- 
2.7.4