get_hash_bucket
ret = get_hash_bucket(local_sockaddr, mapped_sockaddr, &hash);
ret = get_hash_bucket(mapped_loc_sockaddr, mapped_rem_sockaddr, &hash);
bucket = get_hash_bucket(ref, &flags);
bucket = get_hash_bucket(&ref, &flags);
bucket = get_hash_bucket(ref, &flags);
*bucket = get_hash_bucket(&index, flags);
bucket = get_hash_bucket(entry, &flags);
bucket = get_hash_bucket(ref, &flags);