net: hns3: free the pending skb when clean RX ring

If there is pending skb in RX flow when close the port, and the
pending buffer is not cleaned, the new packet will be added to
the pending skb when the port opens again, and the first new
packet has error data.

This patch cleans the pending skb when clean RX ring.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index a67dfdd05d1524f5e05d9ee917eebdf86c69ed0a..923343858f514e6b84c9e9288ccfd617e7b88600 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -3960,6 +3960,13 @@ static int hns3_clear_rx_ring(struct hns3_enet_ring *ring)
                ring_ptr_move_fw(ring, next_to_use);
        }
 
+       /* Free the pending skb in rx ring */
+       if (ring->skb) {
+               dev_kfree_skb_any(ring->skb);
+               ring->skb = NULL;
+               ring->pending_buf = 0;
+       }
+
        return 0;
 }