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e1000/e1000e/igb/ixgb/ixgbe: set NETIF_F_HIGHDMA for VLAN feature flags

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If the netdev->features is set with NETIF_F_HIGHDMA, we should set the
corresponding netdev->vlan_features as well to allow VLAN netdev created
on top of the real netdev to be able to also benefit from HIGHDMA on 32bit
system, reducing the performance hit that is caused by __skb_linearize(),
particularly for large send. This is fixed in this patch for all Intel e1000,
e1000e, igb, ixgbe, and ixgbe drivers since this should be beneficial
to all devices supported by these drivers.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Tested-by: Emil Tantilov <emil.s.tantilov@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yi Zou 2010-09-22 17:57:58 +00:00 committed by David S. Miller
parent 308fb39a86
commit 7b872a55c4
5 changed files with 15 additions and 5 deletions
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4
drivers/net/e1000/e1000_main.c
View file

@ -988,8 +988,10 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
(hw->mac_type != e1000_82547))
netdev->features |= NETIF_F_TSO;
if (pci_using_dac)
if (pci_using_dac) {
netdev->features |= NETIF_F_HIGHDMA;
netdev->vlan_features |= NETIF_F_HIGHDMA;
}
netdev->vlan_features |= NETIF_F_TSO;
netdev->vlan_features |= NETIF_F_HW_CSUM;

4
drivers/net/e1000e/netdev.c
View file

@ -5683,8 +5683,10 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
netdev->vlan_features |= NETIF_F_HW_CSUM;
netdev->vlan_features |= NETIF_F_SG;
if (pci_using_dac)
if (pci_using_dac) {
netdev->features |= NETIF_F_HIGHDMA;
netdev->vlan_features |= NETIF_F_HIGHDMA;
}
if (e1000e_enable_mng_pass_thru(&adapter->hw))
adapter->flags |= FLAG_MNG_PT_ENABLED;

4
drivers/net/igb/igb_main.c
View file

@ -1858,8 +1858,10 @@ static int __devinit igb_probe(struct pci_dev *pdev,
netdev->vlan_features |= NETIF_F_IPV6_CSUM;
netdev->vlan_features |= NETIF_F_SG;
if (pci_using_dac)
if (pci_using_dac) {
netdev->features |= NETIF_F_HIGHDMA;
netdev->vlan_features |= NETIF_F_HIGHDMA;
}
if (hw->mac.type >= e1000_82576)
netdev->features |= NETIF_F_SCTP_CSUM;

4
drivers/net/ixgb/ixgb_main.c
View file

@ -446,8 +446,10 @@ ixgb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
NETIF_F_HW_VLAN_FILTER;
netdev->features |= NETIF_F_TSO;
if (pci_using_dac)
if (pci_using_dac) {
netdev->features |= NETIF_F_HIGHDMA;
netdev->vlan_features |= NETIF_F_HIGHDMA;
}
/* make sure the EEPROM is good */

4
drivers/net/ixgbe/ixgbe_main.c
View file

@ -6842,8 +6842,10 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
netdev->vlan_features |= NETIF_F_FCOE_MTU;
}
#endif /* IXGBE_FCOE */
if (pci_using_dac)
if (pci_using_dac) {
netdev->features |= NETIF_F_HIGHDMA;
netdev->vlan_features |= NETIF_F_HIGHDMA;
}
if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
netdev->features |= NETIF_F_LRO;