+static inline int xfrm_af2proto(unsigned int family)
+{
+ switch(family) {
+ case AF_INET:
+ return IPPROTO_IPIP;
+ case AF_INET6:
+ return IPPROTO_IPV6;
+ default:
+ return 0;
+ }
+}
+
+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;
+}
+