From c5fcec8c3fe2fa82065aace4d20c6bc30a0f5783 Mon Sep 17 00:00:00 2001
From: Wang Fan <fan.wang@intel.com>
Date: Wed, 3 Jan 2018 10:24:53 +0800
Subject: [PATCH] MdeModulePkg/DxeNetLib: Fix an error in packet length
 counting.

* In old implementation, the operation len-- assumes AsciiSPrint()
  has counted NULL terminator, and it's not correct. This patch is
  to fix this issue.

Cc: Fu Siyuan <siyuan.fu@intel.com>
Cc: Ye Ting <ting.ye@intel.com>
Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Wang Fan <fan.wang@intel.com>
Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com>
---
 MdeModulePkg/Library/DxeNetLib/DxeNetLib.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c b/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
index 90f17b71b5..cbce28f1ba 100644
--- a/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
+++ b/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
@@ -403,7 +403,6 @@ SyslogBuildPacket (
                     Time.Minute,
                     Time.Second
                     );
-  Len--;
 
   Len += (UINT32) AsciiSPrint (
                     Buf + Len,
@@ -414,7 +413,7 @@ SyslogBuildPacket (
                     Line,
                     File
                     );
-  Len--;
+  Len ++;
 
   //
   // OK, patch the IP length/checksum and UDP length fields.
-- 
2.39.2