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| author | Michał Mirosław <mirq-linux@rere.qmqm.pl> | 2011-05-26 00:42:57 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-05-26 14:13:59 -0400 |
| commit | fd0daf9d58f6b3342d07c5f6bbfb304dbe5db4ec (patch) | |
| tree | 6456e68bd8f9e85076f4c908933abd470dd1f014 | |
| parent | 94265cf5f731c7df29fdfde262ca3e6d51e6828c (diff) | |
| download | linux-fd0daf9d58f6b3342d07c5f6bbfb304dbe5db4ec.tar.bz2 | |
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>
| -rw-r--r-- | net/core/ethtool.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c index 84e7304532e6..fd14116ad7f0 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -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; |