Fix 3 K8 issues for PXE module

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10489 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 29 insertions, 2 deletions

diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
index 57f588efd3..54b82bd3bb 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
@@ -749,6 +749,7 @@ EfiPxeBcDiscover (
   PXEBC_PRIVATE_DATA              *Private;

   EFI_PXE_BASE_CODE_MODE          *Mode;

   EFI_PXE_BASE_CODE_DISCOVER_INFO DefaultInfo;

+  EFI_PXE_BASE_CODE_DISCOVER_INFO *CreatedInfo;

   EFI_PXE_BASE_CODE_SRVLIST       *SrvList;

   EFI_PXE_BASE_CODE_SRVLIST       DefaultSrvList;

   PXEBC_CACHED_DHCP4_PACKET       *Packet;

@@ -765,6 +766,7 @@ EfiPxeBcDiscover (
   Mode              = Private->PxeBc.Mode;

   BootSvrEntry      = NULL;

   SrvList           = NULL;

+  CreatedInfo       = NULL;

   Status            = EFI_DEVICE_ERROR;

   Private->Function = EFI_PXE_BASE_CODE_FUNCTION_DISCOVER;

 

@@ -831,6 +833,8 @@ EfiPxeBcDiscover (
     }

 

     DefaultInfo.IpCnt = 0;

+    Info    = &DefaultInfo;

+    SrvList = Info->SrvList;

 

     if (DefaultInfo.MustUseList) {

       BootSvrEntry  = VendorOpt->BootSvr;

@@ -851,9 +855,25 @@ EfiPxeBcDiscover (
       }

 

       DefaultInfo.IpCnt = BootSvrEntry->IpCnt;

+

+      if (DefaultInfo.IpCnt >= 1) {

+        CreatedInfo = AllocatePool (sizeof (DefaultInfo) + (DefaultInfo.IpCnt - 1) * sizeof (*SrvList));

+        if (CreatedInfo == NULL) {

+          return EFI_OUT_OF_RESOURCES;

+        }     

+      

+        CopyMem (CreatedInfo, &DefaultInfo, sizeof (DefaultInfo));

+        Info    = CreatedInfo;

+        SrvList = Info->SrvList;

+      }

+

+      for (Index = 0; Index < DefaultInfo.IpCnt; Index++) {

+        CopyMem (&SrvList[Index].IpAddr, &BootSvrEntry->IpAddr[Index], sizeof (EFI_IPv4_ADDRESS));

+        SrvList[Index].AcceptAnyResponse   = FALSE;

+        SrvList[Index].Type                = BootSvrEntry->Type;

+      }

     }

 

-    Info = &DefaultInfo;

   } else {

 

     SrvList = Info->SrvList;

@@ -904,6 +924,9 @@ EfiPxeBcDiscover (
                 TRUE,

                 &Private->PxeReply.Packet.Ack

                 );

+      if (!EFI_ERROR (Status)) {

+        break;

+      }                

     }

 

   } else if (Info->UseMCast) {

@@ -953,6 +976,10 @@ EfiPxeBcDiscover (
       );

   }

 

+  if (CreatedInfo != NULL) {

+    FreePool (CreatedInfo);

+  }

+  

   return Status;

 }

 

@@ -1524,7 +1551,7 @@ EfiPxeBcUdpRead (
     return EFI_INVALID_PARAMETER;

   }

 

-  if ((BufferSize == NULL) || ((BufferPtr == NULL) && (*BufferSize != 0))) {

+  if ((BufferSize == NULL) || (BufferPtr == NULL)) {

     return EFI_INVALID_PARAMETER;

   }