1. Enabled IP4 layer auto configuration in case cable swap is detected.

[mirror_edk2.git] / MdeModulePkg / Universal / Network / Ip4ConfigDxe / Ip4ConfigDriver.c

diff --git a/MdeModulePkg/Universal/Network/Ip4ConfigDxe/Ip4ConfigDriver.c b/MdeModulePkg/Universal/Network/Ip4ConfigDxe/Ip4ConfigDriver.c
index fdbb26cd78a69f04e47efc33f36f3bf374ce8f1f..9ed9ae82a89bba43aa4cfe8c4ef46e576eca0c2b 100644 (file)
--- a/MdeModulePkg/Universal/Network/Ip4ConfigDxe/Ip4ConfigDriver.c
+++ b/MdeModulePkg/Universal/Network/Ip4ConfigDxe/Ip4ConfigDriver.c
@@ -1,7 +1,7 @@
 /** @file\r
   The driver binding for IP4 CONFIG protocol.\r
 \r
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r
 This program and the accompanying materials\r
 are licensed and made available under the terms and conditions of the BSD License\r
 which accompanies this distribution.  The full text of the license may be found at<BR>\r
@@ -77,7 +77,9 @@ IP4_CONFIG_INSTANCE        mIp4ConfigTemplate = {
   (NIC_IP4_CONFIG_INFO *) NULL,\r
   (EFI_DHCP4_PROTOCOL *) NULL,\r
   NULL,\r
-  NULL\r
+  NULL,\r
+  NULL,\r
+  TRUE\r
 };\r
 \r
 /**\r
@@ -285,6 +287,21 @@ Ip4ConfigDriverBindingStart (
     goto ON_ERROR;\r
   }\r
 \r
+  //\r
+  // A dedicated timer is used to poll underlying media status.\r
+  //\r
+  Status = gBS->CreateEvent (\r
+                  EVT_NOTIFY_SIGNAL | EVT_TIMER,\r
+                  TPL_CALLBACK,\r
+                  MediaChangeDetect,\r
+                  Instance,\r
+                  &Instance->Timer\r
+                  );\r
+\r
+  if (EFI_ERROR (Status)) {\r
+    goto ON_ERROR;\r
+  }\r
+\r
   //\r
   // Get the previous configure parameters. If an error happend here,\r
   // just ignore it because the driver should be able to operate.\r
@@ -476,6 +493,12 @@ Ip4ConfigDriverBindingStop (
     FreePool (Instance->MacString);\r
   }\r
 \r
+  if (Instance->Timer != NULL) {\r
+    gBS->SetTimer (Instance->Timer, TimerCancel, 0);\r
+    gBS->CloseEvent (Instance->Timer);\r
+    Instance->Timer = NULL;\r
+  }\r
+  \r
   Ip4ConfigCleanConfig (Instance);\r
   FreePool (Instance);\r
 \r