GRE_HASH
head = &GRE_HASH(src, dst);
CK_LIST_FOREACH(sc, &GRE_HASH(ip->ip_dst.s_addr,
#define GRE_HASH_SC(sc) GRE_HASH((sc)->gre_oip.ip_src.s_addr,\
head = &GRE_HASH(src, dst);
CK_LIST_FOREACH(sc, &GRE_HASH(&ip6->ip6_dst, &ip6->ip6_src), chain) {
#define GRE_HASH_SC(sc) GRE_HASH(&(sc)->gre_oip6.ip6_src,\