Index: kernel/generic/include/ipc/sysipc_ops.h
===================================================================
--- kernel/generic/include/ipc/sysipc_ops.h	(revision 32e464341d723c37183606ae150329e6b126d5a9)
+++ kernel/generic/include/ipc/sysipc_ops.h	(revision b1e6269e0d19f6fc32213d11e1344dccf38f6bf7)
@@ -40,5 +40,7 @@
 typedef struct {
 	int (* request_preprocess)(call_t *, phone_t *);
+	void (* request_forget)(call_t *);
 	int (* request_process)(call_t *, answerbox_t *);
+	void (* answer_cleanup)(call_t *, ipc_data_t *);
 	int (* answer_preprocess)(call_t *, ipc_data_t *);
 	int (* answer_process)(call_t *);
@@ -48,5 +50,7 @@
 
 extern int null_request_preprocess(call_t *, phone_t *);
+extern void null_request_forget(call_t *);
 extern int null_request_process(call_t *, answerbox_t *);
+extern void null_answer_cleanup(call_t *, ipc_data_t *);
 extern int null_answer_preprocess(call_t *, ipc_data_t *);
 extern int null_answer_process(call_t *);