Commit 9de0b86f authored by Huazhong Tan's avatar Huazhong Tan Committed by David S. Miller
Browse files

net: hns3: Prevent to request reset frequently 



Netdevice reset should not be requested frequently, a new one
must wait a moment since there may be some work not completed.

Signed-off-by: default avatarHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: default avatarPeng Li <lipeng321@huawei.com>
Signed-off-by: default avatarSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6d4fab39

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

+10 −3
Original line number Diff line number Diff line
@@ -2819,7 +2819,10 @@ static void hclge_clear_reset_cause(struct hclge_dev *hdev) 


static void hclge_reset(struct hclge_dev *hdev)

{

	struct hnae3_handle *handle;



	/* perform reset of the stack & ae device for a client */

	handle = &hdev->vport[0].nic;

	rtnl_lock();

	hclge_notify_client(hdev, HNAE3_DOWN_CLIENT);
@@ -2836,6 +2839,7 @@ static void hclge_reset(struct hclge_dev *hdev) 
	}



	hclge_notify_client(hdev, HNAE3_UP_CLIENT);

	handle->last_reset_time = jiffies;

	rtnl_unlock();

}
@@ -2849,8 +2853,13 @@ static void hclge_reset_event(struct hnae3_handle *handle) 
	 * know this if last reset request did not occur very recently (watchdog

	 * timer = 5*HZ, let us check after sufficiently large time, say 4*5*Hz)

	 * In case of new request we reset the "reset level" to PF reset.

	 * And if it is a repeat reset request of the most recent one then we

	 * want to make sure we throttle the reset request. Therefore, we will

	 * not allow it again before 3*HZ times.

	 */

	if (time_after(jiffies, (handle->last_reset_time + 4 * 5 * HZ)))

	if (time_before(jiffies, (handle->last_reset_time + 3 * HZ)))

		return;

	else if (time_after(jiffies, (handle->last_reset_time + 4 * 5 * HZ)))

		handle->reset_level = HNAE3_FUNC_RESET;



	dev_info(&hdev->pdev->dev, "received reset event , reset type is %d",
@@ -2862,8 +2871,6 @@ static void hclge_reset_event(struct hnae3_handle *handle) 


	if (handle->reset_level < HNAE3_GLOBAL_RESET)

		handle->reset_level++;



	handle->last_reset_time = jiffies;

}



static void hclge_reset_subtask(struct hclge_dev *hdev)

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