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authorPatrick Mullaney <pmullaney@novell.com>2009-12-03 15:59:22 -0800
committerDavid S. Miller <davem@davemloft.net>2009-12-03 15:59:22 -0800
commitfc4a7489663250360cd40d5adf06a08d1c5d54df (patch)
treece8fed0a2dfc175b03834bb94717f5f2970c9146 /net/core/dev.c
parent012093f6d5d89e6ed6e89c55c383f84b1cff7a78 (diff)
downloadlinux-fc4a7489663250360cd40d5adf06a08d1c5d54df.tar.bz2
netdevice: provide common routine for macvlan and vlan operstate management
Provide common routine for the transition of operational state for a leaf device during a root device transition. Signed-off-by: Patrick Mullaney <pmullaney@novell.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dev.c')
-rw-r--r--net/core/dev.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 0913a08a87d6..c36a17aafcf3 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4901,6 +4901,33 @@ unsigned long netdev_fix_features(unsigned long features, const char *name)
EXPORT_SYMBOL(netdev_fix_features);
/**
+ * netif_stacked_transfer_operstate - transfer operstate
+ * @rootdev: the root or lower level device to transfer state from
+ * @dev: the device to transfer operstate to
+ *
+ * Transfer operational state from root to device. This is normally
+ * called when a stacking relationship exists between the root
+ * device and the device(a leaf device).
+ */
+void netif_stacked_transfer_operstate(const struct net_device *rootdev,
+ struct net_device *dev)
+{
+ if (rootdev->operstate == IF_OPER_DORMANT)
+ netif_dormant_on(dev);
+ else
+ netif_dormant_off(dev);
+
+ if (netif_carrier_ok(rootdev)) {
+ if (!netif_carrier_ok(dev))
+ netif_carrier_on(dev);
+ } else {
+ if (netif_carrier_ok(dev))
+ netif_carrier_off(dev);
+ }
+}
+EXPORT_SYMBOL(netif_stacked_transfer_operstate);
+
+/**
* register_netdevice - register a network device
* @dev: device to register
*