diff --git a/openbsc/include/osmocom/gprs/gprs_bssgp.h b/openbsc/include/osmocom/gprs/gprs_bssgp.h
index 9970a51..25c902c 100644
--- a/openbsc/include/osmocom/gprs/gprs_bssgp.h
+++ b/openbsc/include/osmocom/gprs/gprs_bssgp.h
@@ -249,5 +249,6 @@
 
 /* gprs_bssgp_vty.c */
 int gprs_bssgp_vty_init(void);
+void gprs_bssgp_set_log_ss(int ss);
 
 #endif /* _GPRS_BSSGP_H */
diff --git a/openbsc/include/osmocom/gprs/gprs_msgb.h b/openbsc/include/osmocom/gprs/gprs_msgb.h
index eddd888..3567bb7 100644
--- a/openbsc/include/osmocom/gprs/gprs_msgb.h
+++ b/openbsc/include/osmocom/gprs/gprs_msgb.h
@@ -27,4 +27,8 @@
 #define msgb_bcid(__x)		LIBGB_MSGB_CB(__x)->bssgp_cell_id
 #define msgb_llch(__x)		LIBGB_MSGB_CB(__x)->llch
 
+/* logging contexts */
+#define GPRS_CTX_NSVC	0
+#define GPRS_CTX_BVC	1
+
 #endif
diff --git a/openbsc/include/osmocom/gprs/gprs_ns.h b/openbsc/include/osmocom/gprs/gprs_ns.h
index ab4bd4e..a77515d 100644
--- a/openbsc/include/osmocom/gprs/gprs_ns.h
+++ b/openbsc/include/osmocom/gprs/gprs_ns.h
@@ -258,6 +258,8 @@
 	uint8_t cause;
 };
 
+void gprs_ns_set_log_ss(int ss);
+
 /*! }@ */
 
 #endif