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ovs/vxlan: fix rtnl notifications on iface deletion

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The function vxlan_dev_create() (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.

Note that the function vxlan_dev_create() is moved after the rtnl stuff so
that vxlan_dellink() can be called in this function.

Fixes: dcc38c033b ("openvswitch: Re-add CONFIG_OPENVSWITCH_VXLAN")
CC: Thomas Graf <tgraf@suug.ch>
CC: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nicolas Dichtel 2016-06-13 10:31:05 +02:00 committed by David S. Miller
parent 106da663ff
commit cf5da330bb
1 changed files with 34 additions and 24 deletions
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58
drivers/net/vxlan.c
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@ -2952,30 +2952,6 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev,
return 0;
}
struct net_device *vxlan_dev_create(struct net *net, const char *name,
u8 name_assign_type, struct vxlan_config *conf)
{
struct nlattr *tb[IFLA_MAX+1];
struct net_device *dev;
int err;
memset(&tb, 0, sizeof(tb));
dev = rtnl_create_link(net, name, name_assign_type,
&vxlan_link_ops, tb);
if (IS_ERR(dev))
return dev;
err = vxlan_dev_configure(net, dev, conf);
if (err < 0) {
free_netdev(dev);
return ERR_PTR(err);
}
return dev;
}
EXPORT_SYMBOL_GPL(vxlan_dev_create);
static int vxlan_newlink(struct net *src_net, struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[])
{
@ -3268,6 +3244,40 @@ static struct rtnl_link_ops vxlan_link_ops __read_mostly = {
.get_link_net = vxlan_get_link_net,
};
struct net_device *vxlan_dev_create(struct net *net, const char *name,
u8 name_assign_type,
struct vxlan_config *conf)
{
struct nlattr *tb[IFLA_MAX + 1];
struct net_device *dev;
int err;
memset(&tb, 0, sizeof(tb));
dev = rtnl_create_link(net, name, name_assign_type,
&vxlan_link_ops, tb);
if (IS_ERR(dev))
return dev;
err = vxlan_dev_configure(net, dev, conf);
if (err < 0) {
free_netdev(dev);
return ERR_PTR(err);
}
err = rtnl_configure_link(dev, NULL);
if (err < 0) {
LIST_HEAD(list_kill);
vxlan_dellink(dev, &list_kill);
unregister_netdevice_many(&list_kill);
return ERR_PTR(err);
}
return dev;
}
EXPORT_SYMBOL_GPL(vxlan_dev_create);
static void vxlan_handle_lowerdev_unregister(struct vxlan_net *vn,
struct net_device *dev)
{