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sky2: TSO support for EC_U 

The Yukon EC_U chipset apparently supports TSO but only for non-Jumbo
frame sizes because it lacks a Ram buffer.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Stephen Hemminger 2007-02-06 10:45:41 -08:00 committed by Jeff Garzik
parent b02a92586d
commit 4a50a876ac
1 changed files with 3 additions and 4 deletions
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7
drivers/net/sky2.c
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@ -1895,8 +1895,9 @@ static int sky2_change_mtu(struct net_device *dev, int new_mtu)
if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
return -EINVAL;
/* TSO on Yukon Ultra and MTU > 1500 not supported */
if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN)
return -EINVAL;
dev->features &= ~NETIF_F_TSO;
if (!netif_running(dev)) {
dev->mtu = new_mtu;
@ -3350,11 +3351,9 @@ static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
sky2->port = port;
if (hw->chip_id != CHIP_ID_YUKON_EC_U)
dev->features |= NETIF_F_TSO;
dev->features |= NETIF_F_TSO | NETIF_F_IP_CSUM | NETIF_F_SG;
if (highmem)
dev->features |= NETIF_F_HIGHDMA;
dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
#ifdef SKY2_VLAN_TAG_USED
dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;