int check_ofp_message_array(const struct ofp_header *, uint8_t type,
size_t size, size_t array_elt_size,
size_t *n_array_elts);
-int check_ofp_packet_out(const struct ofp_header *, struct ofpbuf *data,
- int *n_actions, int max_ports);
struct flow_stats_iterator {
const uint8_t *pos, *end;