From 2fef3fdfb17fe823f7030f2c331b9a84cec878f9 Mon Sep 17 00:00:00 2001
From: Dave Page <dave.page@gleeble.com>
Date: Tue, 7 Apr 2015 21:25:43 -0400
Subject: [PATCH] Add DEBUG_DATAGRAM_OVERFLOW to support ec_domain_finish
 datagram overflow testing

---
 master/globals.h | 6 ++++++
 1 file changed, 6 insertions(+)
 mode change 100644 => 100755 master/globals.h

diff --git a/master/globals.h b/master/globals.h
old mode 100644
new mode 100755
index 49781838..0e99b830
--- a/master/globals.h
+++ b/master/globals.h
@@ -88,8 +88,14 @@
 #define EC_ADDR_LEN 4
 
 /** Resulting maximum data size of a single datagram in a frame. */
+#ifdef DEBUG_DATAGRAM_OVERFLOW
+// Define a runt datagram which can be easily overflowed on 
+// available hardware for use when testing ec_domain_finish()
+#define EC_MAX_DATA_SIZE (128)
+#else
 #define EC_MAX_DATA_SIZE (ETH_DATA_LEN - EC_FRAME_HEADER_SIZE \
                           - EC_DATAGRAM_HEADER_SIZE - EC_DATAGRAM_FOOTER_SIZE)
+#endif // DEBUG_DATAGRAM_OVERFLOW
 
 /** Mailbox header size.  */
 #define EC_MBOX_HEADER_SIZE 6