Make sure DLT_ updates include LINKTYPE_ updates.

From a suggestion by mcr.

diff --git a/pcap-common.c b/pcap-common.c
index 7f2b81a3a33763c6d5f5da81dbf5adc823064c08..7561fb3d81cb241bc1a78cc0d06a3e85441915ae 100644 (file)
--- a/pcap-common.c
+++ b/pcap-common.c
@@ -1083,6 +1083,15 @@
 
 #define LINKTYPE_MATCHING_MAX  275             /* highest value in the "matching" range */
 
+/*
+ * The DLT_ and LINKTYPE_ values in the "matching" range should be the
+ * same, so DLT_MATCHING_MAX and LINKTYPE_MATCHING_MAX should be the
+ * same.
+ */
+#if LINKTYPE_MATCHING_MAX != DLT_MATCHING_MAX
+#error The LINKTYPE_ matching range doesn't match the DLT_ matching range
+#endif
+
 static struct linktype_map {
        int     dlt;
        int     linktype;