[PATCH net v2 4/4] ovs/geneve: fix rtnl notifications on iface deletion

[Nicolas Dichtel <nicolas.dichtel@6wind.com>]

The function geneve_dev_create_fb() (only used by ovs) never calls
rtnl_configure_link(). The consequence is that dev->rtnl_link_state is
never set to RTNL_LINK_INITIALIZED.
During the deletion phase, the function rollback_registered_many() sends
a RTM_DELLINK only if dev->rtnl_link_state is set to RTNL_LINK_INITIALIZED.

Fixes: e305ac6cf5a1 ("geneve: Add support to collect tunnel metadata.")
CC: Pravin B Shelar <pshelar@nicira.com>
CC: Jesse Gross <jesse@nicira.com>
CC: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
---
 drivers/net/geneve.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index 086c2dae4c3d..305a04e45a13 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -1532,6 +1532,10 @@ struct net_device *geneve_dev_create_fb(struct net *net, const char *name,
 	if (err)
 		goto err;
 
+	err = rtnl_configure_link(dev, NULL);
+	if (err < 0)
+		goto err;
+
 	return dev;
 
  err:
-- 
2.4.2