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net: Fix ETHTOOL_GFEATURES compatibility 

Implement getting rx checksum state for not updated drivers.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michał Mirosław 2011-02-22 16:52:28 +00:00 committed by David S. Miller
parent 14d1232f49
commit 4e4db20054
1 changed files with 14 additions and 0 deletions
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14
net/core/ethtool.c
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@ -168,6 +168,18 @@ EXPORT_SYMBOL(ethtool_ntuple_flush);
#define ETHTOOL_DEV_FEATURE_WORDS 1
static void ethtool_get_features_compat(struct net_device *dev,
struct ethtool_get_features_block *features)
{
if (!dev->ethtool_ops)
return;
/* getting RX checksum */
if (dev->ethtool_ops->get_rx_csum)
if (dev->ethtool_ops->get_rx_csum(dev))
features[0].active |= NETIF_F_RXCSUM;
}
static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
{
struct ethtool_gfeatures cmd = {
@ -185,6 +197,8 @@ static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
u32 __user *sizeaddr;
u32 copy_size;
ethtool_get_features_compat(dev, features);
sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
if (get_user(copy_size, sizeaddr))
return -EFAULT;