Add new C API

Change-Id: I717ce3cd7c867c155de149ec56623269d26d0ff7
Signed-off-by: Klement Sekera <ksekera@cisco.com>
diff --git a/src/vpp-api/vapi/vapi_dbg.h b/src/vpp-api/vapi/vapi_dbg.h
new file mode 100644
index 0000000..95a8008
--- /dev/null
+++ b/src/vpp-api/vapi/vapi_dbg.h
@@ -0,0 +1,76 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+
+#ifndef __included_vapi_debug_h__
+#define __included_vapi_debug_h__
+
+/* controls debug prints */
+#define VAPI_DEBUG (0)
+#define VAPI_DEBUG_CONNECT (0)
+#define VAPI_DEBUG_ALLOC (0)
+
+#if VAPI_DEBUG
+#include <stdio.h>
+#define VAPI_DEBUG_FILE_DEF           \
+  static const char *__file = NULL;   \
+  {                                   \
+    __file = strrchr (__FILE__, '/'); \
+    if (__file)                       \
+      {                               \
+        ++__file;                     \
+      }                               \
+    else                              \
+      {                               \
+        __file = __FILE__;            \
+      }                               \
+  }
+
+#define VAPI_DBG(fmt, ...)                                       \
+  do                                                             \
+    {                                                            \
+      VAPI_DEBUG_FILE_DEF                                        \
+      printf ("DBG:%s:%d:%s():" fmt, __file, __LINE__, __func__, \
+              ##__VA_ARGS__);                                    \
+      printf ("\n");                                             \
+      fflush (stdout);                                           \
+    }                                                            \
+  while (0);
+
+#define VAPI_ERR(fmt, ...)                                       \
+  do                                                             \
+    {                                                            \
+      VAPI_DEBUG_FILE_DEF                                        \
+      printf ("ERR:%s:%d:%s():" fmt, __file, __LINE__, __func__, \
+              ##__VA_ARGS__);                                    \
+      printf ("\n");                                             \
+      fflush (stdout);                                           \
+    }                                                            \
+  while (0);
+#else
+#define VAPI_DBG(...)
+#define VAPI_ERR(...)
+#endif
+
+#endif /* __included_vapi_debug_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */