initial check-in of the UECUPS daemon and the related TTCN3 code
Change-Id: I5acf7059722b58e6f57dbf31e18abcc385533970
diff --git a/daemon/gtp.h b/daemon/gtp.h
new file mode 100644
index 0000000..f2acd36
--- /dev/null
+++ b/daemon/gtp.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#pragma once
+#include <stdint.h>
+
+/* General GTP protocol related definitions. */
+
+#define GTP0_PORT 3386
+#define GTP1U_PORT 2152
+
+#define GTP_TPDU 255
+
+struct gtp0_header { /* According to GSM TS 09.60. */
+ uint8_t flags;
+ uint8_t type;
+ uint16_t length;
+ uint16_t seq;
+ uint16_t flow;
+ uint8_t number;
+ uint8_t spare[3];
+ uint64_t tid;
+} __attribute__ ((packed));
+
+struct gtp1_header { /* According to 3GPP TS 29.060. */
+ uint8_t flags;
+ uint8_t type;
+ uint16_t length;
+ uint32_t tid;
+} __attribute__ ((packed));
+
+#define GTP1_F_NPDU 0x01
+#define GTP1_F_SEQ 0x02
+#define GTP1_F_EXTHDR 0x04
+#define GTP1_F_MASK 0x07