[BRIDGE]: features change notification
Resend of earlier patch (no changes) from Catalin used to provide
device feature change notification.
Signed-off-by: Catalin BOIE <catab at umbrella.ro>
Acked-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index b25bd02..d8c65ec 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -913,6 +913,7 @@
extern void dev_set_promiscuity(struct net_device *dev, int inc);
extern void dev_set_allmulti(struct net_device *dev, int inc);
extern void netdev_state_change(struct net_device *dev);
+extern void netdev_features_change(struct net_device *dev);
/* Load a device via the kmod */
extern void dev_load(const char *name);
extern void dev_mcast_init(void);
diff --git a/include/linux/notifier.h b/include/linux/notifier.h
index 9303a00..5937dd60 100644
--- a/include/linux/notifier.h
+++ b/include/linux/notifier.h
@@ -56,6 +56,7 @@
#define NETDEV_CHANGEADDR 0x0008
#define NETDEV_GOING_DOWN 0x0009
#define NETDEV_CHANGENAME 0x000A
+#define NETDEV_FEAT_CHANGE 0x000B
#define SYS_DOWN 0x0001 /* Notify of system down */
#define SYS_RESTART SYS_DOWN
diff --git a/net/core/dev.c b/net/core/dev.c
index d4d9e26..f15a3ff 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -761,6 +761,18 @@
}
/**
+ * netdev_features_change - device changes fatures
+ * @dev: device to cause notification
+ *
+ * Called to indicate a device has changed features.
+ */
+void netdev_features_change(struct net_device *dev)
+{
+ notifier_call_chain(&netdev_chain, NETDEV_FEAT_CHANGE, dev);
+}
+EXPORT_SYMBOL(netdev_features_change);
+
+/**
* netdev_state_change - device changes state
* @dev: device to cause notification
*
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index f05fde9..252bfc6 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -682,6 +682,7 @@
void __user *useraddr = ifr->ifr_data;
u32 ethcmd;
int rc;
+ int old_features;
/*
* XXX: This can be pushed down into the ethtool_* handlers that
@@ -703,6 +704,8 @@
if ((rc = dev->ethtool_ops->begin(dev)) < 0)
return rc;
+ old_features = dev->features;
+
switch (ethcmd) {
case ETHTOOL_GSET:
rc = ethtool_get_settings(dev, useraddr);
@@ -712,7 +715,6 @@
break;
case ETHTOOL_GDRVINFO:
rc = ethtool_get_drvinfo(dev, useraddr);
-
break;
case ETHTOOL_GREGS:
rc = ethtool_get_regs(dev, useraddr);
@@ -801,6 +803,10 @@
if(dev->ethtool_ops->complete)
dev->ethtool_ops->complete(dev);
+
+ if (old_features != dev->features)
+ netdev_features_change(dev);
+
return rc;
ioctl: