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Subject[patch 07/16] forcedeth: fix checksum flag
2.6.25-stable review patch.  If anyone has any objections, please let us know.

------------------
From: Ayaz Abdulla <aabdulla@nvidia.com>
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>

---
drivers/net/forcedeth.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -5249,7 +5249,7 @@ static int __devinit nv_probe(struct pci
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_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 " : "",
--


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