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authorMichal Kubeček <mkubecek@suse.cz>2013-11-15 06:18:40 +0100
committerDavid S. Miller <davem@davemloft.net>2013-11-15 17:55:48 -0500
commitbe9eac48274a2d9b142d6dd8567b9b2362939346 (patch)
treeeb43db7c1721c7b40d7d9e7ec9958b10bcaf3d4a /include/linux/if_macvlan.h
parentf9de11a165943a55e0fbda714caf60eaeb276a42 (diff)
downloadlinux-linaro-stable-be9eac48274a2d9b142d6dd8567b9b2362939346.tar.gz
macvlan: introduce macvlan_dev_real_dev() helper function
Introduce helper function macvlan_dev_real_dev which returns the underlying device of a macvlan device, similar to vlan_dev_real_dev() for 802.1q VLAN devices. v2: IFF_MACVLAN flag and equivalent of is_macvlan_dev() were introduced in the meantime v3: do BUG() if compiled without macvlan support Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/if_macvlan.h')
-rw-r--r--include/linux/if_macvlan.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/if_macvlan.h b/include/linux/if_macvlan.h
index c2702856295e..84ba5ac39e03 100644
--- a/include/linux/if_macvlan.h
+++ b/include/linux/if_macvlan.h
@@ -119,4 +119,21 @@ extern int macvlan_link_register(struct rtnl_link_ops *ops);
extern netdev_tx_t macvlan_start_xmit(struct sk_buff *skb,
struct net_device *dev);
+#if IS_ENABLED(CONFIG_MACVLAN)
+static inline struct net_device *
+macvlan_dev_real_dev(const struct net_device *dev)
+{
+ struct macvlan_dev *macvlan = netdev_priv(dev);
+
+ return macvlan->lowerdev;
+}
+#else
+static inline struct net_device *
+macvlan_dev_real_dev(const struct net_device *dev)
+{
+ BUG();
+ return NULL;
+}
+#endif
+
#endif /* _LINUX_IF_MACVLAN_H */