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ethtool: change ethtool_set_gro() to use ethtool_op_get_rx_csum

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To be able to switch on GRO on a device, ethtool_set_gro() checks this
device provides a get_rx_csum() method.

Some devices dont provide this method, while they do support RX
checksumming.

This patch allows bonding to support GRO :

ethtool -K bond0 gro on

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2010-09-17 11:56:18 -07:00 committed by David S. Miller
parent 457e9d2233
commit 67c9660831
1 changed files with 5 additions and 2 deletions
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7
net/core/ethtool.c
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@ -1181,8 +1181,11 @@ static int ethtool_set_gro(struct net_device *dev, char __user *useraddr)
return -EFAULT; return -EFAULT;
if (edata.data) { if (edata.data) {
if (!dev->ethtool_ops->get_rx_csum || u32 rxcsum = dev->ethtool_ops->get_rx_csum ?
!dev->ethtool_ops->get_rx_csum(dev)) dev->ethtool_ops->get_rx_csum(dev) :
ethtool_op_get_rx_csum(dev);
if (!rxcsum)
return -EINVAL; return -EINVAL;
dev->features |= NETIF_F_GRO; dev->features |= NETIF_F_GRO;
} else } else