e1000/e1000e/igb/ixgb/ixgbe: set NETIF_F_HIGHDMA for VLAN feature flags
authorYi Zou <yi.zou@intel.com>
Wed, 22 Sep 2010 17:57:58 +0000 (17:57 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 23 Sep 2010 04:20:04 +0000 (21:20 -0700)
commit7b872a55c40b7e6f5e257c252f96dde911bd7b2f
tree8541d31e7ba17083e488104fd4f6fc72d6c71581
parent308fb39a860c816be8741fe783ae7c64e9c1af5d
e1000/e1000e/igb/ixgb/ixgbe: set NETIF_F_HIGHDMA for VLAN feature flags

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>
drivers/net/e1000/e1000_main.c
drivers/net/e1000e/netdev.c
drivers/net/igb/igb_main.c
drivers/net/ixgb/ixgb_main.c
drivers/net/ixgbe/ixgbe_main.c