struct ofpbuf *make_add_simple_flow(const flow_t *,
uint32_t buffer_id, uint16_t out_port,
uint16_t max_idle);
+struct ofpbuf *make_packet_in(uint32_t buffer_id, uint16_t in_port,
+ uint8_t reason,
+ const struct ofpbuf *payload, int max_send_len);
struct ofpbuf *make_packet_out(const struct ofpbuf *packet, uint32_t buffer_id,
uint16_t in_port,
const struct ofp_action_header *,