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diff --git a/lnet/include/lnet/nal.h b/lnet/include/lnet/nal.h
new file mode 100644
index 0000000..88be63c
--- /dev/null
+++ b/lnet/include/lnet/nal.h
@@ -0,0 +1,49 @@
+/*
+*/
+#ifndef _NAL_H_
+#define _NAL_H_
+
+/*
+ * p30/nal.h
+ *
+ * The API side NAL declarations
+ */
+
+#include <portals/types.h>
+
+#ifdef yield
+#undef yield
+#endif
+
+typedef struct nal_t nal_t;
+
+struct nal_t {
+	ptl_ni_t ni;
+	int refct;
+	void *nal_data;
+	int *timeout;		/* for libp30api users */
+	int (*forward) (nal_t * nal, int index,	/* Function ID */
+			void *args, size_t arg_len, void *ret, size_t ret_len);
+
+	int (*shutdown) (nal_t * nal, int interface);
+
+	int (*validate) (nal_t * nal, void *base, size_t extent);
+
+	void (*yield) (nal_t * nal);
+
+	void (*lock) (nal_t * nal, unsigned long *flags);
+
+	void (*unlock) (nal_t * nal, unsigned long *flags);
+};
+
+typedef nal_t *(ptl_interface_t) (int, ptl_pt_index_t, ptl_ac_index_t, ptl_pid_t requested_pid);
+extern nal_t *PTL_IFACE_IP(int, ptl_pt_index_t, ptl_ac_index_t, ptl_pid_t requested_pid);
+extern nal_t *PTL_IFACE_MYR(int, ptl_pt_index_t, ptl_ac_index_t, ptl_pid_t requested_pid);
+
+extern nal_t *ptl_hndl2nal(ptl_handle_any_t * any);
+
+#ifndef PTL_IFACE_DEFAULT
+#define PTL_IFACE_DEFAULT (PTL_IFACE_IP)
+#endif
+
+#endif