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net: fix ETHTOOL_SFEATURES compatibility with old ethtool_ops.set_flags 

Current code squashes flags to bool - this makes set_flags fail whenever
some ETH_FLAG_* equivalent features are set. Fix this.

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 2011-05-26 00:42:57 +00:00 committed by David S. Miller
parent 94265cf5f7
commit fd0daf9d58
1 changed files with 24 additions and 1 deletions
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25
net/core/ethtool.c
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@ -233,6 +233,29 @@ static int ethtool_set_feature_compat(struct net_device *dev,
return 1;
}
static int ethtool_set_flags_compat(struct net_device *dev,
int (*legacy_set)(struct net_device *, u32),
struct ethtool_set_features_block *features, u32 mask)
{
u32 value;
if (!legacy_set)
return 0;
if (!(features[0].valid & mask))
return 0;
value = dev->features & ~features[0].valid;
value |= features[0].requested;
features[0].valid &= ~mask;
if (legacy_set(dev, value & mask) < 0)
netdev_info(dev, "Legacy flags change failed\n");
return 1;
}
static int ethtool_set_features_compat(struct net_device *dev,
struct ethtool_set_features_block *features)
{
@ -249,7 +272,7 @@ static int ethtool_set_features_compat(struct net_device *dev,
features, NETIF_F_ALL_TSO);
compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_rx_csum,
features, NETIF_F_RXCSUM);
compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_flags,
compat |= ethtool_set_flags_compat(dev, dev->ethtool_ops->set_flags,
features, flags_dup_features);
return compat;