MdeModulePkg/NetworkPkg: Locate IpSec on IP packet processing only if it's installed.

Modified the logic in Ip4Dxe and Ip6Dxe to not locate EFI_IPSEC2_PROTOCOL on each
message transmit/receive. Instead, register a callback in the drivers entry points
on the IpSec protocol installation, and process only if the protocol is installed.
This speeds up the network stacks when IpSec is not installed since there is a
penalty associated with searching the entire handle database on each packet processing.

(Sync patch r18365 from main trunk.)

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Samer El-Haj-Mahmoud <samer.el-haj-mahmoud@hp.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/branches/UDK2015@18367 6f19259b-4bc3-4df7-8a09-765794883524

3 files changed, 46 insertions, 0 deletions

diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.c b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.c
index d8ab948457..3dc4d88f13 100644
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.c
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.c
@@ -2,6 +2,8 @@
   The driver binding and service binding protocol for IP4 driver.

 

 Copyright (c) 2005 - 2015, Intel Corporation. All rights reserved.<BR>

+(C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>

+

 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

@@ -23,6 +25,30 @@ EFI_DRIVER_BINDING_PROTOCOL gIp4DriverBinding = {
   NULL

 };

 

+BOOLEAN  mIpSec2Installed = FALSE;

+

+/**

+   Callback function for IpSec2 Protocol install.

+

+   @param[in] Event           Event whose notification function is being invoked

+   @param[in] Context         Pointer to the notification function's context

+

+**/

+VOID

+EFIAPI

+IpSec2InstalledCallback (

+  IN EFI_EVENT  Event,

+  IN VOID       *Context

+  )

+{

+  //

+  // Close the event so it does not get called again.

+  //

+  gBS->CloseEvent (Event);

+

+  mIpSec2Installed = TRUE;

+}

+

 /**

   This is the declaration of an EFI image entry point. This entry point is

   the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including

@@ -45,6 +71,16 @@ Ip4DriverEntryPoint (
   IN EFI_SYSTEM_TABLE       *SystemTable

   )

 {

+  VOID            *Registration;

+

+  EfiCreateProtocolNotifyEvent (

+    &gEfiIpSec2ProtocolGuid,

+    TPL_CALLBACK,

+    IpSec2InstalledCallback,

+    NULL,

+    &Registration

+    );

+

   return EfiLibInstallDriverBindingComponentName2 (

            ImageHandle,

            SystemTable,

diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h
index a1a76bd612..e802b9516b 100644
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h
@@ -2,6 +2,8 @@
   Ip4 internal functions and type defintions.

   

 Copyright (c) 2005 - 2015, Intel Corporation. All rights reserved.<BR>

+(C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>

+

 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

@@ -396,5 +398,6 @@ Ip4FreeTxToken (
   );

 

 extern EFI_IPSEC2_PROTOCOL   *mIpSec;

+extern BOOLEAN               mIpSec2Installed;

 

 #endif

diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Input.c b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Input.c
index 38ad1c39da..09b8f2bac2 100644
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Input.c
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Input.c
@@ -2,6 +2,8 @@
   IP4 input process.

   

 Copyright (c) 2005 - 2014, Intel Corporation. All rights reserved.<BR>

+(C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>

+

 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

@@ -512,6 +514,11 @@ Ip4IpSecProcessPacket (
   IP4_HEAD                  ZeroHead;

 

   Status        = EFI_SUCCESS;

+

+  if (!mIpSec2Installed) {

+    goto ON_EXIT;

+  }

+  

   Packet        = *Netbuf;

   RecycleEvent  = NULL;

   IpSecWrap     = NULL;