netdev - [PATCH net 2/2] ibmvnic: skip tx timeout reset while in resetting

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Message-Id: <20201028055742.74941-3-ljp@linux.ibm.com>
Date:   Wed, 28 Oct 2020 00:57:42 -0500
From:   Lijun Pan <ljp@...ux.ibm.com>
To:     netdev@...r.kernel.org
Cc:     Lijun Pan <ljp@...ux.ibm.com>,
        Brian King <brking@...ux.vnet.ibm.com>
Subject: [PATCH net 2/2] ibmvnic: skip tx timeout reset while in resetting

Sometimes it takes longer than 5 seconds to complete failover,
migration, and other resets. In stead of scheduling another timeout reset,
we wait for the current one to complete.

Suggested-by: Brian King <brking@...ux.vnet.ibm.com>
Signed-off-by: Lijun Pan <ljp@...ux.ibm.com>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 718da39f5ae4..eb0eb1e8ac22 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -2336,6 +2336,12 @@ static void ibmvnic_tx_timeout(struct net_device *dev, unsigned int txqueue)
 {
 	struct ibmvnic_adapter *adapter = netdev_priv(dev);
 
+	if (test_bit(0, &adapter->resetting)) {
+		netdev_err(adapter->netdev,
+			   "adapter is resetting, skip timeout reset\n");
+		return;
+	}
+
 	ibmvnic_reset(adapter, VNIC_RESET_TIMEOUT);
 }
 
-- 
2.23.0