static inline struct xfrm_mode *xfrm_ip2inner_mode(struct xfrm_state *x, int ipproto)
{
	if ((ipproto == IPPROTO_IPIP && x->props.family == AF_INET) ||
	    (ipproto == IPPROTO_IPV6 && x->props.family == AF_INET6))
		return x->inner_mode;
	else
		return x->inner_mode_iaf;
}
Unknown