3 files changed, 25 insertions, 1 deletions
diff --git a/include/osmo-bts/Makefile.am b/include/osmo-bts/Makefile.am
index d7f9421f..68d63e09 100644
--- a/include/osmo-bts/Makefile.am
+++ b/include/osmo-bts/Makefile.am
@@ -1,3 +1,3 @@
 noinst_HEADERS = abis.h bts.h bts_model.h gsm_data.h logging.h measurement.h \
 		 oml.h paging.h rsl.h signal.h vty.h amr.h pcu_if.h pcuif_proto.h \
-		 handover.h
+		 handover.h msg_utils.h
diff --git a/include/osmo-bts/msg_utils.h b/include/osmo-bts/msg_utils.h
new file mode 100644
index 00000000..f63c0964
--- /dev/null
+++ b/include/osmo-bts/msg_utils.h
@@ -0,0 +1,20 @@
+/*
+ * Routines to check the structurally integrity of messages
+ */
+
+#pragma once
+
+struct msgb;
+
+/**
+ * Classification of OML message. ETSI for plain GSM 12.21
+ * messages and IPA/Osmo for manufacturer messages.
+ */
+enum {
+	OML_MSG_TYPE_ETSI,
+	OML_MSG_TYPE_IPA,
+	OML_MSG_TYPE_OSMO,
+};
+
+int msg_verify_ipa_structure(struct msgb *msg);
+int msg_verify_oml_structure(struct msgb *msg);
diff --git a/include/osmo-bts/oml.h b/include/osmo-bts/oml.h
index dfbc5549..d7092780 100644
--- a/include/osmo-bts/oml.h
+++ b/include/osmo-bts/oml.h
@@ -5,6 +5,10 @@ struct gsm_bts;
 struct gsm_abis_mo;
 struct msgb;
 
+
+extern const char oml_ipa_magic[13];
+extern const char oml_osmo_magic[12];
+
 int oml_init(void);
 int down_oml(struct gsm_bts *bts, struct msgb *msg);