struct buffer;
struct flow;
struct pollfd;
+struct ofp_header;
/* Client interface. */
uint16_t in_port, uint16_t out_port);
struct buffer *make_unbuffered_packet_out(const struct buffer *packet,
uint16_t in_port, uint16_t out_port);
+struct buffer *make_echo_reply(const struct ofp_header *rq);
\f
/* Provider interface. */