Allocate DLT_DEBUG_ONLY.

Author: infrastation

pcap-common.c

@@ -1309,7 +1309,10 @@
  */
 #define LINKTYPE_EDK2_MM	302
 
-#define LINKTYPE_HIGH_MATCHING_MAX	302		/* highest value in the "matching" range */
+// See DLT_DEBUG_ONLY
+#define LINKTYPE_DEBUG_ONLY	303
+
+#define LINKTYPE_HIGH_MATCHING_MAX	303		/* highest value in the "matching" range */
 
 /*
  * The DLT_ and LINKTYPE_ values in the "matching" range should be the

pcap.c

@@ -3346,6 +3346,7 @@ static struct dlt_choice dlt_choices[] = {
 	DLT_CHOICE(USER14, "Private use 14"),
 	DLT_CHOICE(USER15, "Private use 15"),
 	DLT_CHOICE(EDK2_MM, "edk2 mm request serialization protocol"),
+	DLT_CHOICE(DEBUG_ONLY, "unstructured data for manual debugging only"),
 	DLT_CHOICE_SENTINEL
 };
 

pcap/dlt.h

@@ -1673,6 +1673,21 @@
  */
 #define DLT_EDK2_MM		302
 
+/*
+ * Unstructured data for manual debugging only.  In other words, this DLT is
+ * suitable for expert interpretation of hex dumps, and that's it.  Do not use
+ * this DLT for any other purpose.  For any automated (identification, saving,
+ * loading, filtering, decoding) processing please either use another existing
+ * DLT that fits the use case or document, assign and implement a new, properly
+ * structured DLT.
+ *
+ * In this DLT do not assume any specification, any structure, any format, any
+ * version, any header, any payload, any byte order, any implementation, any
+ * software/firmware/hardware particulars, any source, any destination, any
+ * direction, any protocol or any data integrity/consistency whatsoever.
+ */
+#define DLT_DEBUG_ONLY		303
+
 /*
  * In case the code that includes this file (directly or indirectly)
  * has also included OS files that happen to define DLT_HIGH_MATCHING_MAX,
@@ -1684,6 +1699,6 @@
 #undef DLT_HIGH_MATCHING_MAX
 #endif
 
-#define DLT_HIGH_MATCHING_MAX	302	/* highest value in the "matching" range */
+#define DLT_HIGH_MATCHING_MAX	303	/* highest value in the "matching" range */
 
 #endif /* !defined(lib_pcap_dlt_h) */