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net: Call netdev_features_change() from netdev_update_features()

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Issue FEAT_CHANGE notification when features are changed by
netdev_update_features().  This will allow changes made by extra constraints
on e.g. MTU change to be properly propagated like changes via ethtool.

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 2011-04-02 22:48:47 -07:00 committed by David S. Miller
parent e9403c8437
commit 6cb6a27c45
3 changed files with 21 additions and 9 deletions
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1
include/linux/netdevice.h
View File

@ -2550,6 +2550,7 @@ static inline u32 netdev_get_wanted_features(struct net_device *dev)
}
u32 netdev_increment_features(u32 all, u32 one, u32 mask);
u32 netdev_fix_features(struct net_device *dev, u32 features);
int __netdev_update_features(struct net_device *dev);
void netdev_update_features(struct net_device *dev);
void netif_stacked_transfer_operstate(const struct net_device *rootdev,

23
net/core/dev.c
View File

@ -5236,7 +5236,7 @@ u32 netdev_fix_features(struct net_device *dev, u32 features)
}
EXPORT_SYMBOL(netdev_fix_features);
void netdev_update_features(struct net_device *dev)
int __netdev_update_features(struct net_device *dev)
{
u32 features;
int err = 0;
@ -5250,7 +5250,7 @@ void netdev_update_features(struct net_device *dev)
features = netdev_fix_features(dev, features);
if (dev->features == features)
return;
return 0;
netdev_info(dev, "Features changed: 0x%08x -> 0x%08x\n",
dev->features, features);
@ -5258,12 +5258,23 @@ void netdev_update_features(struct net_device *dev)
if (dev->netdev_ops->ndo_set_features)
err = dev->netdev_ops->ndo_set_features(dev, features);
if (!err)
dev->features = features;
else if (err < 0)
if (unlikely(err < 0)) {
netdev_err(dev,
"set_features() failed (%d); wanted 0x%08x, left 0x%08x\n",
err, features, dev->features);
return -1;
}
if (!err)
dev->features = features;
return 1;
}
void netdev_update_features(struct net_device *dev)
{
if (__netdev_update_features(dev))
netdev_features_change(dev);
}
EXPORT_SYMBOL(netdev_update_features);
@ -5430,7 +5441,7 @@ int register_netdevice(struct net_device *dev)
goto err_uninit;
dev->reg_state = NETREG_REGISTERED;
netdev_update_features(dev);
__netdev_update_features(dev);
/*
* Default initial state at registry is that the

6
net/core/ethtool.c
View File

@ -317,7 +317,7 @@ static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
dev->wanted_features &= ~features[0].valid;
dev->wanted_features |= features[0].valid & features[0].requested;
netdev_update_features(dev);
__netdev_update_features(dev);
if ((dev->wanted_features ^ dev->features) & features[0].valid)
ret |= ETHTOOL_F_WISH;
@ -499,7 +499,7 @@ static int ethtool_set_one_feature(struct net_device *dev,
else
dev->wanted_features &= ~mask;
netdev_update_features(dev);
__netdev_update_features(dev);
return 0;
}
@ -551,7 +551,7 @@ int __ethtool_set_flags(struct net_device *dev, u32 data)
dev->wanted_features =
(dev->wanted_features & ~changed) | data;
netdev_update_features(dev);
__netdev_update_features(dev);
return 0;
}