linux-kernel - [PATCH V5 6/6 net-next] example: enable zero-copy support in ixgbe

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Message-ID: <1305574935.3456.37.camel@localhost.localdomain>
Date:	Mon, 16 May 2011 12:42:15 -0700
From:	Shirley Ma <mashirle@...ibm.com>
To:	David Miller <davem@...emloft.net>, mst@...hat.com,
	Eric Dumazet <eric.dumazet@...il.com>,
	Avi Kivity <avi@...hat.com>, Arnd Bergmann <arnd@...db.de>
Cc:	netdev@...r.kernel.org, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH V5 6/6 net-next] example: enable zero-copy support in ixgbe

Device can enable zero-copy flag when HIGHDMA is supported.

Signed-off-by: Shirley Ma <xma@...ibm.com>
---

 drivers/net/ixgbe/ixgbe_main.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 2dce3d0..7e9e881 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -7553,6 +7553,10 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
 		netdev->vlan_features |= NETIF_F_HIGHDMA;
 	}
 
+	/* enable zero-copy when device supports HIGHDMA */
+	if (netdev->features & NETIF_F_HIGHDMA)
+		netdev->features |= NETIF_F_ZEROCOPY;
+
 	if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
 		netdev->features |= NETIF_F_LRO;
 


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