Allow userspace to create and destroy an interface using netlink
commands.

Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
---
 drivers/net/ovpn/netlink.c | 50 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/drivers/net/ovpn/netlink.c b/drivers/net/ovpn/netlink.c
index 2e855ce145e7..02b41034f615 100644
--- a/drivers/net/ovpn/netlink.c
+++ b/drivers/net/ovpn/netlink.c

@@ -154,7 +154,57 @@ static void ovpn_post_doit(const struct genl_split_ops *ops, struct sk_buff *skb
 		dev_put(ovpn->dev);
 }
 
+static int ovpn_nl_new_iface(struct sk_buff *skb, struct genl_info *info)
+{
+	enum ovpn_mode mode = OVPN_MODE_P2P;
+	struct net_device *dev;
+	char *ifname;
+	int ret;
+
+	if (!info->attrs[OVPN_A_IFNAME])
+		return -EINVAL;
+
+	ifname = nla_data(info->attrs[OVPN_A_IFNAME]);
+
+	if (info->attrs[OVPN_A_MODE]) {
+		mode = nla_get_u8(info->attrs[OVPN_A_MODE]);
+		netdev_dbg(dev, "%s: setting device (%s) mode: %u\n", __func__, ifname,
+			   mode);