linux-kernel - [PATCH net] net: hns3: call hns3_nic_net_open() while doing HNAE3_UP

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Date:   Mon, 31 Dec 2018 10:58:29 +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>, <mehta.salil@...src.net>
Subject: [PATCH net] net: hns3: call hns3_nic_net_open() while doing HNAE3_UP_CLIENT

For HNAE3_DOWN_CLIENT calling hns3_nic_net_stop(), HNAE3_UP_CLIENT
should call hns3_nic_net_open(), since if the number of queue or
the map of TC has is changed before HHAE3_UP_CLIENT is called,
it will cause problem.

Also the HNS3_NIC_STATE_RESETTING flag needs to be cleared before
hns3_nic_net_open() called, and set it back while hns3_nic_net_open()
failed.

Fixes: bb6b94a896d4 ("net: hns3: Add reset interface implementation in client")
Signed-off-by: Huazhong Tan <tanhuazhong@...wei.com>
Signed-off-by: Yunsheng Lin <linyunsheng@...wei.com>
Signed-off-by: Peng Li <lipeng321@...wei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index d3b9aaf..07cd587 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -3995,17 +3995,18 @@ static int hns3_reset_notify_up_enet(struct hnae3_handle *handle)
 	struct hns3_nic_priv *priv = netdev_priv(kinfo->netdev);
 	int ret = 0;
 
+	clear_bit(HNS3_NIC_STATE_RESETTING, &priv->state);
+
 	if (netif_running(kinfo->netdev)) {
-		ret = hns3_nic_net_up(kinfo->netdev);
+		ret = hns3_nic_net_open(kinfo->netdev);
 		if (ret) {
+			set_bit(HNS3_NIC_STATE_RESETTING, &priv->state);
 			netdev_err(kinfo->netdev,
 				   "hns net up fail, ret=%d!\n", ret);
 			return ret;
 		}
 	}
 
-	clear_bit(HNS3_NIC_STATE_RESETTING, &priv->state);
-
 	return ret;
 }
 
-- 
2.7.4