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Commit 5ed2616f authored by Ayaz Abdulla's avatar Ayaz Abdulla Committed by Jeff Garzik
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[PATCH] forcedeth config: csum 



This patch allows for configurable rx and tx checksum offloads through
ethtool support.

Signed-Off-By: default avatarAyaz Abdulla <aabdulla@nvidia.com>

Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent c42d9df9

drivers/net/forcedeth.c

+77 −8
Original line number Diff line number Diff line
@@ -1707,6 +1707,7 @@ static void nv_rx_process(struct net_device *dev) 
					}

				}

			}

			if (np->txrxctl_bits & NVREG_TXRXCTL_RXCHECK) {

				Flags &= NV_RX2_CHECKSUMMASK;

				if (Flags == NV_RX2_CHECKSUMOK1 ||

				    Flags == NV_RX2_CHECKSUMOK2 ||
@@ -1717,6 +1718,7 @@ static void nv_rx_process(struct net_device *dev) 
					dprintk(KERN_DEBUG "%s: hwchecksum miss!.\n", dev->name);

				}

			}

		}

		/* got a valid packet - forward it to the network core */

		skb = np->rx_skbuff[i];

		np->rx_skbuff[i] = NULL;
@@ -3021,6 +3023,67 @@ static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* 
	return 0;

}



static u32 nv_get_rx_csum(struct net_device *dev)

{

	struct fe_priv *np = netdev_priv(dev);

	return (np->txrxctl_bits & NVREG_TXRXCTL_RXCHECK) != 0;

}



static int nv_set_rx_csum(struct net_device *dev, u32 data)

{

	struct fe_priv *np = netdev_priv(dev);

	u8 __iomem *base = get_hwbase(dev);

	int retcode = 0;



	if (np->driver_data & DEV_HAS_CHECKSUM) {



		if (((np->txrxctl_bits & NVREG_TXRXCTL_RXCHECK) && data) ||

		    (!(np->txrxctl_bits & NVREG_TXRXCTL_RXCHECK) && !data)) {

			/* already set or unset */

			return 0;

		}



		if (data) {

			np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;

		} else if (!(np->vlanctl_bits & NVREG_VLANCONTROL_ENABLE)) {

			np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;

		} else {

			printk(KERN_INFO "Can not disable rx checksum if vlan is enabled\n");

			return -EINVAL;

		}



		if (netif_running(dev)) {

			spin_lock_irq(&np->lock);

			writel(np->txrxctl_bits, base + NvRegTxRxControl);

			spin_unlock_irq(&np->lock);

		}

	} else {

		return -EINVAL;

	}



	return retcode;

}



static int nv_set_tx_csum(struct net_device *dev, u32 data)

{

	struct fe_priv *np = netdev_priv(dev);



	if (np->driver_data & DEV_HAS_CHECKSUM)

		return ethtool_op_set_tx_hw_csum(dev, data);

	else

		return -EOPNOTSUPP;

}



static int nv_set_sg(struct net_device *dev, u32 data)

{

	struct fe_priv *np = netdev_priv(dev);



	if (np->driver_data & DEV_HAS_CHECKSUM)

		return ethtool_op_set_sg(dev, data);

	else

		return -EOPNOTSUPP;

}



static struct ethtool_ops ops = {

	.get_drvinfo = nv_get_drvinfo,

	.get_link = ethtool_op_get_link,
@@ -3038,6 +3101,12 @@ static struct ethtool_ops ops = { 
	.set_ringparam = nv_set_ringparam,

	.get_pauseparam = nv_get_pauseparam,

	.set_pauseparam = nv_set_pauseparam,

	.get_rx_csum = nv_get_rx_csum,

	.set_rx_csum = nv_set_rx_csum,

	.get_tx_csum = ethtool_op_get_tx_csum,

	.set_tx_csum = nv_set_tx_csum,

	.get_sg = ethtool_op_get_sg,

	.set_sg = nv_set_sg,

};



static void nv_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)