net: Add a struct net parameter to sock_create_kern

This is long overdue, and is part of cleaning up how we allocate kernel
sockets that don't reference count struct net.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv6/ip6_udp_tunnel.c

@@ -19,7 +19,7 @@ int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg,
 	int err;
 	struct socket *sock = NULL;
 
-	err = sock_create_kern(AF_INET6, SOCK_DGRAM, 0, &sock);
+	err = sock_create_kern(&init_net, AF_INET6, SOCK_DGRAM, 0, &sock);
 	if (err < 0)
 		goto error;