heuristic_load
heuristic_load(fd, ess_num, p_ess_conf);
heuristic_load(fd, ess_num, p_ess_conf);
heuristic_load(fd, ess_num, p_ess_conf);
static void heuristic_load(int fd, uint32_t ess_num, wl_ess_conf_t **);