static struct ip_esp_hdr *esp_output_tcp_encap(struct xfrm_state *x,
						    struct sk_buff *skb,
						    struct esp_info *esp)
{
	return ERR_PTR(-EOPNOTSUPP);
}
static struct ip_esp_hdr *esp_output_tcp_encap(struct xfrm_state *x,
						    struct sk_buff *skb,
						    struct esp_info *esp)
{
	return ERR_PTR(-EOPNOTSUPP);
}