net: hns3: reset tqp while doing DOWN operation

While doing DOWN operation, the driver will reclaim the memory which has
already used for TX. If the hardware is processing this memory, it will
cause a RCB error to the hardware. According the hardware's description,
the driver should reset the tqp before reclaim the memory during DOWN.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c

@@ -5331,6 +5331,7 @@ static void hclge_ae_stop(struct hnae3_handle *handle)
 {
 	struct hclge_vport *vport = hclge_get_vport(handle);
 	struct hclge_dev *hdev = vport->back;
+	int i;
 
 	set_bit(HCLGE_STATE_DOWN, &hdev->state);
 
@@ -5343,6 +5344,9 @@ static void hclge_ae_stop(struct hnae3_handle *handle)
 		return;
 	}
 
+	for (i = 0; i < handle->kinfo.num_tqps; i++)
+		hclge_reset_tqp(handle, i);
+
 	/* Mac disable */
 	hclge_cfg_mac_mode(hdev, false);
 

drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c

@@ -1870,9 +1870,13 @@ static int hclgevf_ae_start(struct hnae3_handle *handle)
 static void hclgevf_ae_stop(struct hnae3_handle *handle)
 {
 	struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
+	int i;
 
 	set_bit(HCLGEVF_STATE_DOWN, &hdev->state);
 
+	for (i = 0; i < handle->kinfo.num_tqps; i++)
+		hclgevf_reset_tqp(handle, i);
+
 	/* reset tqp stats */
 	hclgevf_reset_tqp_stats(handle);
 	hclgevf_update_link_status(hdev, 0);