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cxgb3: Set vlan_feature on net_device

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cxgb3 interface has a bad performance when VLAN is set. On my current
setup, a PowerLinux 7R2, I am able to get around 7 Gbps on a TCP_STREAM
(8 instances, 4k message).
With this patch, I am able to reach 9.5 Gbps.

Signed-off-by: Breno Leitao <brenohl@br.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
brenohl@br.ibm.com 2012-07-18 09:29:08 +00:00 committed by David S. Miller
parent 83bd1b793e
commit 1d962ecf1e
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
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@ -3173,6 +3173,9 @@ static void __devinit cxgb3_init_iscsi_mac(struct net_device *dev)
pi->iscsic.mac_addr[3] |= 0x80;
}
#define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
#define VLAN_FEAT (NETIF_F_SG | NETIF_F_IP_CSUM | TSO_FLAGS | \
NETIF_F_IPV6_CSUM | NETIF_F_HIGHDMA)
static int __devinit init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
@ -3293,6 +3296,7 @@ static int __devinit init_one(struct pci_dev *pdev,
netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
NETIF_F_TSO | NETIF_F_RXCSUM | NETIF_F_HW_VLAN_RX;
netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_TX;
netdev->vlan_features |= netdev->features & VLAN_FEAT;
if (pci_using_dac)
netdev->features |= NETIF_F_HIGHDMA;