[Patch] NetworkPkg/HttpBootDxe: Request HTTP token notify as a DPC at TPL_CALLBACK

[Jiaxin Wu <jiaxin.wu@intel.com>]

This patch is to update the HTTP token notify as a DPC at
TPL_CALLBACK to align with UEFI Spec.

Cc: Hegde Nagaraj P <nagaraj-p.hegde@hpe.com>
Cc: Ye Ting <ting.ye@intel.com>
Cc: Fu Siyuan <siyuan.fu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Wu Jiaxin <jiaxin.wu@intel.com>
---
 NetworkPkg/HttpBootDxe/HttpBootDxe.h     |  3 ++-
 NetworkPkg/HttpBootDxe/HttpBootDxe.inf   |  1 +
 NetworkPkg/HttpBootDxe/HttpBootSupport.c | 37 ++++++++++++++++++++++++++++++--
 3 files changed, 38 insertions(+), 3 deletions(-)

diff --git a/NetworkPkg/HttpBootDxe/HttpBootDxe.h b/NetworkPkg/HttpBootDxe/HttpBootDxe.h
index 7e8cd9d..2814594 100644
--- a/NetworkPkg/HttpBootDxe/HttpBootDxe.h
+++ b/NetworkPkg/HttpBootDxe/HttpBootDxe.h
@@ -1,9 +1,9 @@
 /** @file
   UEFI HTTP boot driver's private data structure and interfaces declaration.
 
-Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
 (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
 This program and the accompanying materials are licensed and made available under 
 the terms and conditions of the BSD License that accompanies this distribution.  
 The full text of the license may be found at
 http://opensource.org/licenses/bsd-license.php.                                          
@@ -34,10 +34,11 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Library/DebugLib.h>
 #include <Library/NetLib.h>
 #include <Library/HttpLib.h>
 #include <Library/HiiLib.h>
 #include <Library/PrintLib.h>
+#include <Library/DpcLib.h>
 
 //
 // UEFI Driver Model Protocols
 //
 #include <Protocol/DriverBinding.h>
diff --git a/NetworkPkg/HttpBootDxe/HttpBootDxe.inf b/NetworkPkg/HttpBootDxe/HttpBootDxe.inf
index 982e6b4..ec983ba 100644
--- a/NetworkPkg/HttpBootDxe/HttpBootDxe.inf
+++ b/NetworkPkg/HttpBootDxe/HttpBootDxe.inf
@@ -58,10 +58,11 @@
   DebugLib
   NetLib
   HttpLib
   HiiLib
   PrintLib
+  DpcLib
   UefiHiiServicesLib
   UefiBootManagerLib
 
 [Protocols]
   ## TO_START
diff --git a/NetworkPkg/HttpBootDxe/HttpBootSupport.c b/NetworkPkg/HttpBootDxe/HttpBootSupport.c
index 69b129f..d786d72 100644
--- a/NetworkPkg/HttpBootDxe/HttpBootSupport.c
+++ b/NetworkPkg/HttpBootDxe/HttpBootSupport.c
@@ -623,10 +623,43 @@ HttpBootSetHeader (
 
   return EFI_SUCCESS;
 }
 
 /**
+  Notify the callback function when an event is triggered.
+
+  @param[in]  Context         The opaque parameter to the function.
+
+**/
+VOID
+HttpIoNotifyDpc (
+  IN VOID                *Context
+  )
+{
+  *((BOOLEAN *) Context) = TRUE;
+}
+
+/**
+  Request HttpIoNotifyDpc as a DPC at TPL_CALLBACK.
+
+  @param[in]  Event                 The event signaled.
+  @param[in]  Context               The opaque parameter to the function.
+
+**/
+VOID
+HttpIoNotify (
+  IN EFI_EVENT              Event,
+  IN VOID                   *Context
+  )
+{
+  //
+  // Request HttpIoNotifyDpc as a DPC at TPL_CALLBACK
+  //
+  QueueDpc (TPL_CALLBACK, HttpIoNotifyDpc, Context);
+}
+
+/**
   Create a HTTP_IO to access the HTTP service. It will create and configure
   a HTTP child handle.
 
   @param[in]  Image          The handle of the driver image.
   @param[in]  Controller     The handle of the controller.
@@ -728,11 +761,11 @@ HttpIoCreateIo (
   // Create events for variuos asynchronous operations.
   //
   Status = gBS->CreateEvent (
                   EVT_NOTIFY_SIGNAL,
                   TPL_NOTIFY,
-                  HttpBootCommonNotify,
+                  HttpIoNotify,
                   &HttpIo->IsTxDone,
                   &Event
                   );
   if (EFI_ERROR (Status)) {
     goto ON_ERROR;
@@ -741,11 +774,11 @@ HttpIoCreateIo (
   HttpIo->ReqToken.Message = &HttpIo->ReqMessage;
 
   Status = gBS->CreateEvent (
                   EVT_NOTIFY_SIGNAL,
                   TPL_NOTIFY,
-                  HttpBootCommonNotify,
+                  HttpIoNotify,
                   &HttpIo->IsRxDone,
                   &Event
                   );
   if (EFI_ERROR (Status)) {
     goto ON_ERROR;
-- 
1.9.5.msysgit.1