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[PATCH] forcedeth config: csum

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

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

Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Ayaz Abdulla 2006-06-10 22:47:59 -04:00 committed by Jeff Garzik
parent c42d9df932
commit 5ed2616f62
1 changed files with 77 additions and 8 deletions
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85
drivers/net/forcedeth.c
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@ -1707,14 +1707,16 @@ static void nv_rx_process(struct net_device *dev)
}
}
}
Flags &= NV_RX2_CHECKSUMMASK;
if (Flags == NV_RX2_CHECKSUMOK1 ||
Flags == NV_RX2_CHECKSUMOK2 ||
Flags == NV_RX2_CHECKSUMOK3) {
dprintk(KERN_DEBUG "%s: hw checksum hit!.\n", dev->name);
np->rx_skbuff[i]->ip_summed = CHECKSUM_UNNECESSARY;
} else {
dprintk(KERN_DEBUG "%s: hwchecksum miss!.\n", dev->name);
if (np->txrxctl_bits & NVREG_TXRXCTL_RXCHECK) {
Flags &= NV_RX2_CHECKSUMMASK;
if (Flags == NV_RX2_CHECKSUMOK1 ||
Flags == NV_RX2_CHECKSUMOK2 ||
Flags == NV_RX2_CHECKSUMOK3) {
dprintk(KERN_DEBUG "%s: hw checksum hit!.\n", dev->name);
np->rx_skbuff[i]->ip_summed = CHECKSUM_UNNECESSARY;
} else {
dprintk(KERN_DEBUG "%s: hwchecksum miss!.\n", dev->name);
}
}
}
/* got a valid packet - forward it to the network core */
@ -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)