int ofconn_pktbuf_retrieve(struct ofconn *, uint32_t id,
struct ofpbuf **bufferp, uint16_t *in_port);
-size_t ofconn_n_pending_opgroups(const struct ofconn *);
bool ofconn_has_pending_opgroups(const struct ofconn *);
void ofconn_add_opgroup(struct ofconn *, struct list *);
void ofconn_remove_opgroup(struct ofconn *, struct list *,