netdev - [PATCH net-next 05/12] net: hns3: refine tx timeout count handle

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Date:   Fri, 19 Apr 2019 11:05:40 +0800
From:   Huazhong Tan <tanhuazhong@...wei.com>
To:     <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <salil.mehta@...wei.com>, <yisen.zhuang@...wei.com>,
        <linuxarm@...wei.com>, <nhorman@...hat.com>,
        Jian Shen <shenjian15@...wei.com>,
        Peng Li <lipeng321@...wei.com>,
        Huazhong Tan <tanhuazhong@...wei.com>
Subject: [PATCH net-next 05/12] net: hns3: refine tx timeout count handle

From: Jian Shen <shenjian15@...wei.com>

In current codes, tx_timeout_cnt is used before increased,
then we can see the tx_timeout_count is still 0 from the
print when tx timeout happens, e.g.
"hns3 0000:7d:00.3 eth3: tx_timeout count: 0, queue id: 0, SW_NTU:
 0xa6, SW_NTC: 0xa4, HW_HEAD: 0xa4, HW_TAIL: 0xa6, INT: 0x1"

The tx_timeout_cnt should be updated before used.

Signed-off-by: Jian Shen <shenjian15@...wei.com>
Signed-off-by: Peng Li <lipeng321@...wei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@...wei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 9233438..193994c 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -1655,6 +1655,8 @@ static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev)
 		return false;
 	}
 
+	priv->tx_timeout_count++;
+
 	tx_ring = priv->ring_data[timeout_queue].ring;
 
 	hw_head = readl_relaxed(tx_ring->tqp->io_base +
@@ -1682,8 +1684,6 @@ static void hns3_nic_net_timeout(struct net_device *ndev)
 	if (!hns3_get_tx_timeo_queue_info(ndev))
 		return;
 
-	priv->tx_timeout_count++;
-
 	/* request the reset, and let the hclge to determine
 	 * which reset level should be done
 	 */
-- 
2.7.4