1 files changed, 36 insertions, 0 deletions
diff --git a/common/include/decode_gtp.h b/common/include/decode_gtp.h
new file mode 100644
index 0000000..87d9fd9
--- /dev/null
+++ b/common/include/decode_gtp.h
@@ -0,0 +1,36 @@
+#ifndef _DECODE_GTP_H
+#define _DECODE_GTP_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
+
+#include "public.h"
+
+    /* According to 3GPP TS 29.060. */
+    typedef struct gtp1_header_s
+    {
+        uint8_t flags;
+        uint8_t type;
+        uint16_t length;
+        uint32_t tid;
+    } __attribute__((packed)) gtp1_header_t;
+
+    typedef struct gtp_info_s
+    {
+        gtp1_header_t *hdr;
+        uint8_t *payload;
+
+        uint32_t hdr_len;
+        uint32_t payload_len;
+    } gtp_info_t;
+
+    int decode_gtp(gtp_info_t *packet, const uint8_t *data, uint32_t len);
+    void dump_gtp_info(uint32_t pkt_id, gtp_info_t *packet);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif
+\ No newline at end of file