xfrmi_input
return xfrmi_input(skb, ip_hdr(skb)->protocol, 0, 0, AF_INET);
return xfrmi_input(skb, skb_network_header(skb)[IP6CB(skb)->nhoff],
return xfrmi_input(skb, nexthdr, spi, encap_type, AF_INET);
return xfrmi_input(skb, nexthdr, spi, encap_type, AF_INET6);