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Commit 12dea57b authored by Dai Haruki's avatar Dai Haruki Committed by David S. Miller
Browse files

gianfar: Fix eTSEC configuration procedure 



Fix some bugs in the ethtool configuration functions:
* gfar_clean_rx_ring should not be called with interrupts disabled.
* Update last transmission time to avoid tx timeout.
* Delete redundant NETIF_F_IP_CSUM check in gfar_start_xmit
* Use netif_tx_lock_bh when reconfiguring the tx csum

Signed-off-by: default avatarDai Haruki <dai.haruki@freescale.com>
Signed-off-by: default avatarAndy Fleming <afleming@freescale.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b46a8454

drivers/net/gianfar.c

+3 −2
Original line number Diff line number Diff line
@@ -892,6 +892,8 @@ void gfar_start(struct net_device *dev) 


	/* Unmask the interrupts we look for */

	gfar_write(&regs->imask, IMASK_DEFAULT);



	dev->trans_start = jiffies;

}



/* Bring the controller up and running */
@@ -1233,8 +1235,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev) 
	status = txbdp->status & TXBD_WRAP;



	/* Set up checksumming */

	if (likely((dev->features & NETIF_F_IP_CSUM)

			&& (CHECKSUM_PARTIAL == skb->ip_summed))) {

	if (CHECKSUM_PARTIAL == skb->ip_summed) {

		fcb = gfar_add_fcb(skb, txbdp);

		status |= TXBD_TOE;

		gfar_tx_checksum(skb, fcb);

drivers/net/gianfar_ethtool.c

+12 −11
Original line number Diff line number Diff line
@@ -462,11 +462,12 @@ static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rva 
		spin_lock(&priv->rxlock);



		gfar_halt(dev);

		gfar_clean_rx_ring(dev, priv->rx_ring_size);



		spin_unlock(&priv->rxlock);

		spin_unlock_irqrestore(&priv->txlock, flags);



		gfar_clean_rx_ring(dev, priv->rx_ring_size);



		/* Now we take down the rings to rebuild them */

		stop_gfar(dev);

	}
@@ -476,9 +477,10 @@ static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rva 
	priv->tx_ring_size = rvals->tx_pending;



	/* Rebuild the rings with the new size */

	if (dev->flags & IFF_UP)

	if (dev->flags & IFF_UP) {

		err = startup_gfar(dev);



		netif_wake_queue(dev);

	}

	return err;

}
@@ -498,11 +500,12 @@ static int gfar_set_rx_csum(struct net_device *dev, uint32_t data) 
		spin_lock(&priv->rxlock);



		gfar_halt(dev);

		gfar_clean_rx_ring(dev, priv->rx_ring_size);



		spin_unlock(&priv->rxlock);

		spin_unlock_irqrestore(&priv->txlock, flags);



		gfar_clean_rx_ring(dev, priv->rx_ring_size);



		/* Now we take down the rings to rebuild them */

		stop_gfar(dev);

	}
@@ -511,9 +514,10 @@ static int gfar_set_rx_csum(struct net_device *dev, uint32_t data) 
	priv->rx_csum_enable = data;

	spin_unlock_irqrestore(&priv->bflock, flags);



	if (dev->flags & IFF_UP)

	if (dev->flags & IFF_UP) {

		err = startup_gfar(dev);



		netif_wake_queue(dev);

	}

	return err;

}
@@ -529,22 +533,19 @@ static uint32_t gfar_get_rx_csum(struct net_device *dev) 


static int gfar_set_tx_csum(struct net_device *dev, uint32_t data)

{

	unsigned long flags;

	struct gfar_private *priv = netdev_priv(dev);



	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))

		return -EOPNOTSUPP;



	spin_lock_irqsave(&priv->txlock, flags);

	gfar_halt(dev);

	netif_tx_lock_bh(dev);



	if (data)

		dev->features |= NETIF_F_IP_CSUM;

	else

		dev->features &= ~NETIF_F_IP_CSUM;



	gfar_start(dev);

	spin_unlock_irqrestore(&priv->txlock, flags);

	netif_tx_unlock_bh(dev);



	return 0;

}