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sfc: Implement TSO for TCP/IPv6

PATCH Applied Ben Hutchings 2 participants 2 messages Nov 30, 2009

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Ben Hutchings

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PATCH 11/12 sfc: Implement TSO for TCP/IPv6

Signed-off-by Ben Hutchings <[email protected]>
---
 drivers/net/sfc/efx.c     |    2 +
 drivers/net/sfc/ethtool.c |   20 ++++++++++++++++-
 drivers/net/sfc/tx.c      |   52 +++++++++++++++++++++++++++++++++-----------
 3 files changed, 60 insertions(+), 14 deletions(-)
drivers/net/sfc/efx.c +2 -0
index 4b5c786..3c0d6be 100644
@@ -2208,6 +2208,8 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
 	net_dev->features |= (type->offload_features | NETIF_F_SG |
 			      NETIF_F_HIGHDMA | NETIF_F_TSO |
 			      NETIF_F_GRO);
+	if (type->offload_features & NETIF_F_V6_CSUM)
+		net_dev->features |= NETIF_F_TSO6;
 	/* Mask for features that also apply to VLAN devices */
 	net_dev->vlan_features |= (NETIF_F_ALL_CSUM | NETIF_F_SG |
 				   NETIF_F_HIGHDMA | NETIF_F_TSO);
drivers/net/sfc/ethtool.c +19 -1
index 5492b63..f698121 100644
@@ -471,6 +471,23 @@ static void efx_ethtool_get_stats(struct net_device *net_dev,
 	}
 }
 
+static int efx_ethtool_set_tso(struct net_device *net_dev, u32 enable)
+{
+	struct efx_nic *efx __attribute__ ((unused)) = netdev_priv(net_dev);
+	unsigned long features;
+
+	features = NETIF_F_TSO;
+	if (efx->type->offload_features & NETIF_F_V6_CSUM)
+		features |= NETIF_F_TSO6;
+
+	if (enable)
+		net_dev->features |= features;
+	else
+		net_dev->features &= ~features;
+
+	return 0;
+}
+
 static int efx_ethtool_set_tx_csum(struct net_device *net_dev, u32 enable)
 {
 	struct efx_nic *efx = netdev_priv(net_dev);

@@ -834,7 +851,8 @@ const struct ethtool_ops efx_ethtool_ops = {
 	.get_sg			= ethtool_op_get_sg,
 	.set_sg			= ethtool_op_set_sg,
 	.get_tso		= ethtool_op_get_tso,
-	.set_tso		= ethtool_op_set_tso,
+	/* Need to enable/disable TSO-IPv6 too */
+	.set_tso		= efx_ethtool_set_tso,
 	.get_flags		= ethtool_op_get_flags,
 	.set_flags		= ethtool_op_set_flags,
 	.get_sset_count		= efx_ethtool_get_sset_count,
drivers/net/sfc/tx.c +39 -13

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Signature · 9 lines
1.6.5.3




-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.