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[net-next,v2,11/12] dev: set iflink to 0 for virtual interfaces

Message ID 1427987231-3669-12-git-send-email-nicolas.dichtel@6wind.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Nicolas Dichtel April 2, 2015, 3:07 p.m. UTC 
Virtual interfaces are supposed to set an iflink value != of their ifindex.
It was not the case for some of them, like vxlan, bond or bridge.
Let's set iflink to 0 when dev->rtnl_link_ops is set.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
---
 net/core/dev.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/net/core/dev.c b/net/core/dev.c
index 3be107e0bc93..26622d614f81 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -672,6 +672,10 @@  int dev_get_iflink(const struct net_device *dev)
 	if (dev->netdev_ops && dev->netdev_ops->ndo_get_iflink)
 		return dev->netdev_ops->ndo_get_iflink(dev);
 
+	/* If dev->rtnl_link_ops is set, it's a virtual interface. */
+	if (dev->rtnl_link_ops)
+		return 0;
+
 	return dev->ifindex;
 }
 EXPORT_SYMBOL(dev_get_iflink);