xfrm_spi_hash
h = xfrm_spi_hash(net, &x->id.daddr, x->id.spi, x->id.proto, encap_family);
h = xfrm_spi_hash(net, &x->id.daddr, x->id.spi, x->id.proto,
h = xfrm_spi_hash(net, &x->id.daddr, newspi, x->id.proto, x->props.family);