[sccp] Add a utility for the nat..
Add a small helper to determine the type of a message
diff --git a/openbsc/include/sccp/sccp.h b/openbsc/include/sccp/sccp.h
index 3ad568c..69ef63c 100644
--- a/openbsc/include/sccp/sccp.h
+++ b/openbsc/include/sccp/sccp.h
@@ -143,4 +143,10 @@
u_int32_t sccp_src_ref_to_int(struct sccp_source_reference *ref);
struct sccp_source_reference sccp_src_ref_from_int(u_int32_t);
+
+/*
+ * helper functions for the nat code
+ */
+int sccp_determine_msg_type(struct msgb *msg);
+
#endif
diff --git a/openbsc/src/sccp/sccp.c b/openbsc/src/sccp/sccp.c
index 522afcf..7e55231 100644
--- a/openbsc/src/sccp/sccp.c
+++ b/openbsc/src/sccp/sccp.c
@@ -1160,6 +1160,14 @@
return ref;
}
+int sccp_determine_msg_type(struct msgb *msg)
+{
+ if (msgb_l2len(msg) < 1)
+ return -1;
+
+ return msg->l2h[0];
+}
+
static __attribute__((constructor)) void on_dso_load(void)
{
tall_sccp_ctx = talloc_named_const(NULL, 1, "sccp");