diff --git a/openbsc/include/openbsc/gprs_sgsn.h b/openbsc/include/openbsc/gprs_sgsn.h
index 723c914..b0dd75f 100644
--- a/openbsc/include/openbsc/gprs_sgsn.h
+++ b/openbsc/include/openbsc/gprs_sgsn.h
@@ -453,4 +453,6 @@
 struct sgsn_instance;
 int sgsn_gtp_init(struct sgsn_instance *sgi);
 
+void sgsn_rate_ctr_init();
+
 #endif /* _GPRS_SGSN_H */
diff --git a/openbsc/include/openbsc/sgsn.h b/openbsc/include/openbsc/sgsn.h
index fe16593..59126fe 100644
--- a/openbsc/include/openbsc/sgsn.h
+++ b/openbsc/include/openbsc/sgsn.h
@@ -20,6 +20,30 @@
 	SGSN_AUTH_POLICY_REMOTE
 };
 
+
+enum sgsn_rate_ctr_keys {
+	CTR_GPRS_ATTACH_REQUEST,
+	CTR_GPRS_ATTACH_ACKED,
+	CTR_GPRS_ATTACH_REJECTED,
+	CTR_GPRS_DETACH_REQUEST,
+	CTR_GPRS_DETACH_ACKED,
+	CTR_GPRS_ROUTING_AREA_REQUEST,
+	CTR_GPRS_ROUTING_AREA_ACKED,
+	CTR_GPRS_ROUTING_AREA_REJECT,
+	/* PDP single packet counter / GSM 04.08 9.5.1 - 9.5.9 */
+	CTR_PDP_ACTIVATE_REQUEST,
+	CTR_PDP_ACTIVATE_REJECT,
+	CTR_PDP_ACTIVATE_ACCEPT,
+	CTR_PDP_REQUEST_ACTIVATE, /* unused */
+	CTR_PDP_REQUEST_ACTIVATE_REJ, /* unused */
+	CTR_PDP_MODIFY_REQUEST, /* unsued */
+	CTR_PDP_MODIFY_ACCEPT, /* unused */
+	CTR_PDP_DL_DEACTIVATE_REQUEST,
+	CTR_PDP_DL_DEACTIVATE_ACCEPT,
+	CTR_PDP_UL_DEACTIVATE_REQUEST,
+	CTR_PDP_UL_DEACTIVATE_ACCEPT,
+};
+
 struct sgsn_cdr {
 	char *filename;
 	int interval;
@@ -88,6 +112,8 @@
 	struct llist_head ares_fds;
 	ares_channel ares_channel;
 	struct ares_addr_node *ares_servers;
+
+	struct rate_ctr_group *rate_ctrs;
 };
 
 extern struct sgsn_instance *sgsn;