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mlx4_en: Fix BQL reset TX queue call point

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Fix issue in Mellanox driver related to BQL.  netdev_tx_reset_queue
was not being called in certain situations where the device was
being start and stopped.  Moved netdev_tx_reset_queue from the reset
device path to mlx4_en_free_tx_buf which is where the rings are
cleaned in a reset (specifically from device being stopped).

Signed-off-by: Tom Herbert <therbert@google.com>
Acked-By: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert 2013-02-06 07:58:41 +00:00 committed by David S. Miller
parent 2de27f307f
commit 41b749201b
2 changed files with 2 additions and 3 deletions
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3
drivers/net/ethernet/mellanox/mlx4/en_netdev.c
View File

@ -1685,15 +1685,12 @@ static void mlx4_en_restart(struct work_struct *work)
watchdog_task);
struct mlx4_en_dev *mdev = priv->mdev;
struct net_device *dev = priv->dev;
int i;
en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
mutex_lock(&mdev->state_lock);
if (priv->port_up) {
mlx4_en_stop_port(dev, 1);
for (i = 0; i < priv->tx_ring_num; i++)
netdev_tx_reset_queue(priv->tx_ring[i].tx_queue);
if (mlx4_en_start_port(dev))
en_err(priv, "Failed restarting port %d\n", priv->port);
}

2
drivers/net/ethernet/mellanox/mlx4/en_tx.c
View File

@ -294,6 +294,8 @@ int mlx4_en_free_tx_buf(struct net_device *dev, struct mlx4_en_tx_ring *ring)
cnt++;
}
netdev_tx_reset_queue(ring->tx_queue);
if (cnt)
en_dbg(DRV, priv, "Freed %d uncompleted tx descriptors\n", cnt);