From 077b3188f9283e221d5fd6176cdf4b2c83a61efb Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Mon, 12 Dec 2011 15:59:33 +0000
Subject: [PATCH] STM32 Ethernet... initial bring-up changes

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4165 42af7a65-404d-4744-a932-0658087f49c3
---
 netutils/tftpc/tftpc_get.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/netutils/tftpc/tftpc_get.c b/netutils/tftpc/tftpc_get.c
index f4fb74dd3..bfae1a3b7 100644
--- a/netutils/tftpc/tftpc_get.c
+++ b/netutils/tftpc/tftpc_get.c
@@ -256,10 +256,19 @@ int tftpget(const char *remote, const char *local, in_addr_t addr, bool binary)
 
               /* Parse the incoming DATA packet */
 
-              if (nbytesrecvd < TFTP_DATAHEADERSIZE ||
-                  tftp_parsedatapacket(packet, &opcode, &rblockno) != OK ||
+              if (nbytesrecvd < TFTP_DATAHEADERSIZE)
+                {
+                  /* Packet is not big enough to be parsed */
+
+                  nvdbg("Tiny data packet ignored\n");
+                  continue;
+                }
+
+              if (tftp_parsedatapacket(packet, &opcode, &rblockno) != OK ||
                   blockno != rblockno)
                 {
+                  /* Opcode is not TFTP_DATA or the block number is unexpected */
+
                   nvdbg("Parse failure\n");
                   if (opcode > TFTP_MAXRFC1350)
                     {