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From: Fu Siyuan <siyuan.fu@intel.com>
To: edk2-devel@lists.01.org
Cc: Ye Ting <ting.ye@intel.com>, Wu Jiaxin <jiaxin.wu@intel.com>
Subject: [Patch] MdeModulePkg: Discard received broadcast message in DxeIpIpLib.
Date: Fri, 21 Apr 2017 09:50:04 +0800	[thread overview]
Message-ID: <1492739404-13540-1-git-send-email-siyuan.fu@intel.com> (raw)

Cc: Ye Ting <ting.ye@intel.com>
Cc: Wu Jiaxin <jiaxin.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Fu Siyuan <siyuan.fu@intel.com>
---
 MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.c b/MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.c
index 9a70e90..abc07fb 100644
--- a/MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.c
+++ b/MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.c
@@ -1028,6 +1028,12 @@ IpIoListenHandlerDpc (
   }
 
   if (IpIo->IpVersion == IP_VERSION_4) {
+    if (IP4_IS_LOCAL_BROADCAST (EFI_IP4 (RxData->Ip4RxData.Header->SourceAddress))) {
+      //
+      // The source address is a broadcast address, discard it.
+      //
+      goto CleanUp;
+    }
     if ((EFI_IP4 (RxData->Ip4RxData.Header->SourceAddress) != 0) &&
         (IpIo->SubnetMask != 0) &&
         IP4_NET_EQUAL (IpIo->StationIp, EFI_NTOHL (((EFI_IP4_RECEIVE_DATA *) RxData)->Header->SourceAddress), IpIo->SubnetMask) &&
-- 
2.7.4.windows.1



             reply	other threads:[~2017-04-21  1:50 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-21  1:50 Fu Siyuan [this message]
2017-04-21  1:56 ` [Patch] MdeModulePkg: Discard received broadcast message in DxeIpIpLib Wu, Jiaxin
2017-04-21  1:59 ` Ye, Ting

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