From: liuzhongzhu <liuzhongzhu@huawei.com>
Date: Fri, 19 Apr 2019 11:05:46 +0800
Subject: net: hns3: add queue's statistics update to service task
Patch-mainline: v5.2-rc1
Git-commit: db01afeb6614b75299b0ecba06b246143d4b894d
References: bsc#1104353 FATE#326415 bsc#1134981

This patch updates VF's TQP statistic info in the service task,
and adds a limitation to prevent update too frequently.

Signed-off-by: liuzhongzhu <liuzhongzhu@huawei.com>
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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c |    8 ++++++++
 drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h |    3 +++
 2 files changed, 11 insertions(+)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -1649,6 +1649,7 @@ static void hclgevf_service_timer(unsign
 
 	mod_timer(&hdev->service_timer, jiffies + 5 * HZ);
 
+	hdev->stats_timer++;
 	hclgevf_task_schedule(hdev);
 }
 
@@ -1769,9 +1770,16 @@ static void hclgevf_keep_alive_task(stru
 
 static void hclgevf_service_task(struct work_struct *work)
 {
+	struct hnae3_handle *handle;
 	struct hclgevf_dev *hdev;
 
 	hdev = container_of(work, struct hclgevf_dev, service_task);
+	handle = &hdev->nic;
+
+	if (hdev->stats_timer >= HCLGEVF_STATS_TIMER_INTERVAL) {
+		hclgevf_tqps_update_stats(handle);
+		hdev->stats_timer = 0;
+	}
 
 	/* request the link status from the PF. PF would be able to tell VF
 	 * about such updates in future so we might remove this later
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h
@@ -116,6 +116,8 @@
 #define HCLGEVF_S_IP_BIT		BIT(3)
 #define HCLGEVF_V_TAG_BIT		BIT(4)
 
+#define HCLGEVF_STATS_TIMER_INTERVAL	(36)
+
 enum hclgevf_evt_cause {
 	HCLGEVF_VECTOR0_EVENT_RST,
 	HCLGEVF_VECTOR0_EVENT_MBX,
@@ -281,6 +283,7 @@ struct hclgevf_dev {
 	struct hnae3_client *nic_client;
 	struct hnae3_client *roce_client;
 	u32 flag;
+	u32 stats_timer;
 };
 
 static inline bool hclgevf_is_reset_pending(struct hclgevf_dev *hdev)