From f2ad2d9b65963322186a8af2bd2965c734a7badb Mon Sep 17 00:00:00 2001 From: Ayaz Abdulla Date: Thu, 24 Aug 2006 17:35:41 -0400 Subject: [PATCH] forcedeth: decouple vlan and rx checksum dependency This patch decouples the dependency between the rx checksum feature and vlan feature. This is done by ignoring the checksum information if the user has disabled rx checksum when vlan is enabled. Signed-Off-By: Ayaz Abdulla Signed-off-by: Jeff Garzik --- drivers/net/forcedeth.c | 23 +++++++++-------------- 1 file changed, 9 insertions(+), 14 deletions(-) diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c index 74ed8bb266ec..e90d27b78121 100644 --- a/drivers/net/forcedeth.c +++ b/drivers/net/forcedeth.c @@ -718,6 +718,7 @@ struct fe_priv { u32 vlanctl_bits; u32 driver_data; u32 register_size; + int rx_csum; void __iomem *base; @@ -1897,7 +1898,7 @@ static int nv_rx_process(struct net_device *dev, int limit) } } } - if (np->txrxctl_bits & NVREG_TXRXCTL_RXCHECK) { + if (np->rx_csum) { flags &= NV_RX2_CHECKSUMMASK; if (flags == NV_RX2_CHECKSUMOK1 || flags == NV_RX2_CHECKSUMOK2 || @@ -3557,7 +3558,7 @@ static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* 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; + return (np->rx_csum) != 0; } static int nv_set_rx_csum(struct net_device *dev, u32 data) @@ -3567,22 +3568,15 @@ static int nv_set_rx_csum(struct net_device *dev, u32 data) 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->rx_csum = 1; 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; + np->rx_csum = 0; + /* vlan is dependent on rx checksum offload */ + if (!(np->vlanctl_bits & NVREG_VLANCONTROL_ENABLE)) + np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK; } - if (netif_running(dev)) { spin_lock_irq(&np->lock); writel(np->txrxctl_bits, base + NvRegTxRxControl); @@ -4322,6 +4316,7 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i np->pkt_limit = NV_PKTLIMIT_2; if (id->driver_data & DEV_HAS_CHECKSUM) { + np->rx_csum = 1; np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK; dev->features |= NETIF_F_HW_CSUM | NETIF_F_SG; #ifdef NETIF_F_TSO -- cgit v1.2.2