forcedeth: fix checksum flag

commit edcfe5f7e307846e578fb88d69fa27051fded0ab upstream

Fix the checksum feature advertised in device flags.  The hardware support
TCP/UDP over IPv4 and TCP/UDP over IPv6 (without IPv6 extension headers).
However, the kernel feature flags do not distinguish IPv6 with/without
extension headers.

Therefore, the driver needs to use NETIF_F_IP_CSUM instead of
NETIF_F_HW_CSUM since the latter includes all IPv6 packets.

A future patch can be created to check for extension headers and perform
software checksum calculation.

Signed-off-by: Ayaz Abdulla <aabdulla@nvidia.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 8e877e7665815dbcfa7fb4cdb6bcf3ed6a37456b..5435970361a389c2b421c83f5deabf219bfaf7fb 100644 (file)
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -5249,7 +5249,7 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
        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;
+               dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
                dev->features |= NETIF_F_TSO;
        }
 
@@ -5548,7 +5548,7 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
 
        dev_printk(KERN_INFO, &pci_dev->dev, "%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
                   dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
-                  dev->features & (NETIF_F_HW_CSUM | NETIF_F_SG) ?
+                  dev->features & (NETIF_F_IP_CSUM | NETIF_F_SG) ?
                        "csum " : "",
                   dev->features & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX) ?
                        "vlan " : "",