-void backend_wakeup(struct io_conn *conn);
-void backend_add_timeout(struct io_conn *conn, struct timespec ts);
-void backend_del_timeout(struct io_conn *conn);
+void backend_new_closing(struct io_conn *conn);
+void backend_new_always(struct io_conn *conn);
+void backend_new_plan(struct io_conn *conn);
+
+void backend_plan_done(struct io_conn *conn);
+
+void backend_wake(const void *wait);
+void backend_del_conn(struct io_conn *conn);