Do some additional sanity checking.

[tcpdump] / ethertype.h

diff --git a/ethertype.h b/ethertype.h
index 3af3b307836040f24591828c6247ffdf91eb75a9..6e93be9fb5d9e06619818c11545d10e215d2018a 100644 (file)
--- a/ethertype.h
+++ b/ethertype.h
@@ -18,7 +18,7 @@
  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
- * @(#) $Header: /tcpdump/master/tcpdump/ethertype.h,v 1.22 2004-03-25 03:30:40 mcr Exp $ (LBL)
+ * @(#) $Header: /tcpdump/master/tcpdump/ethertype.h,v 1.24 2004-10-07 16:04:07 hannes Exp $ (LBL)
  */
 
 /*
@@ -33,6 +33,13 @@
  * <netinet/if_ether.h> if all it needs are ETHERTYPE_ values.
  */
 
+#ifndef ETHERTYPE_LEN
+#define ETHERTYPE_LEN           2
+#endif
+
+#ifndef ETHERTYPE_GRE_ISO
+#define ETHERTYPE_GRE_ISO       0x00FE  /* not really an ethertype only used in GRE */
+#endif
 #ifndef ETHERTYPE_PUP
 #define        ETHERTYPE_PUP           0x0200  /* PUP protocol */
 #endif