X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdeModulePkg%2FUniversal%2FNetwork%2FSnpDxe%2FReceive.c;h=28cea0d2e9722fbfa5482e7398a2a8388d7a1f9a;hp=92123b6c1fe76835bc5869a88fd88e008d4c82be;hb=c0fd7f734e2d33e22215899b40a47b843129541d;hpb=9cff2f8d3687aeed765e1ee787c18ce70ae500bc

diff --git a/MdeModulePkg/Universal/Network/SnpDxe/Receive.c b/MdeModulePkg/Universal/Network/SnpDxe/Receive.c
index 92123b6c1f..28cea0d2e9 100644
--- a/MdeModulePkg/Universal/Network/SnpDxe/Receive.c
+++ b/MdeModulePkg/Universal/Network/SnpDxe/Receive.c
@@ -1,14 +1,8 @@
 /** @file
- 		Implementation of receiving a packet from a network interface.
+  Implementation of receiving a packet from a network interface.
 
-Copyright (c) 2004 - 2007, Intel Corporation. <BR>
-All rights reserved. This program and the accompanying materials are licensed
-and made available under the terms and conditions of the BSD License which
-accompanies this distribution. The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
 
@@ -68,10 +62,10 @@ PxeReceive (
   Snp->Cdb.OpCode     = PXE_OPCODE_RECEIVE;
   Snp->Cdb.OpFlags    = PXE_OPFLAGS_NOT_USED;
 
-  Snp->Cdb.CPBsize    = sizeof (PXE_CPB_RECEIVE);
+  Snp->Cdb.CPBsize    = (UINT16) sizeof (PXE_CPB_RECEIVE);
   Snp->Cdb.CPBaddr    = (UINT64)(UINTN) Cpb;
 
-  Snp->Cdb.DBsize     = sizeof (PXE_DB_RECEIVE);
+  Snp->Cdb.DBsize     = (UINT16) sizeof (PXE_DB_RECEIVE);
   Snp->Cdb.DBaddr     = (UINT64)(UINTN) Db;
 
   Snp->Cdb.StatCode   = PXE_STATCODE_INITIALIZE;
@@ -132,6 +126,16 @@ PxeReceive (
     *Protocol = (UINT16) PXE_SWAP_UINT16 (Db->Protocol);
   }
 
+  //
+  // We have received a packet from network interface, which implies that the
+  // network cable should be present. While, some UNDI driver may not report
+  // correct media status during Snp->Initialize(). So, we need ensure
+  // MediaPresent in SNP mode data is set to correct value.
+  //
+  if (Snp->Mode.MediaPresentSupported && !Snp->Mode.MediaPresent) {
+    Snp->Mode.MediaPresent = TRUE;
+  }
+
   return (*BufferSize <= BuffSize) ? EFI_SUCCESS : EFI_BUFFER_TOO_SMALL;
 }
 
@@ -225,7 +229,7 @@ SnpUndi32Receive (
     goto ON_EXIT;
   }
 
-  if (!Snp->Mode.ReceiveFilterSetting) {
+  if (Snp->Mode.ReceiveFilterSetting == 0) {
     Status = EFI_DEVICE_ERROR;
     goto ON_EXIT;
   }