1. Add EFI_COMPONENT_NAME2_PROTOCOL.GetControllerName() support.

[mirror_edk2.git] / MdeModulePkg / Universal / Network / Mtftp4Dxe / Mtftp4Rrq.c

diff --git a/MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Rrq.c b/MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Rrq.c
index 264598f49a0c520113d95120982007d90e48bba8..ae157c5e0a6ed7ec059a763b0010ffe797abb1f8 100644 (file)
--- a/MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Rrq.c
+++ b/MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Rrq.c
@@ -1,7 +1,7 @@
 /** @file\r
   Routines to process Rrq (download).\r
   \r
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2012, 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\r
@@ -486,6 +486,7 @@ Mtftp4RrqHandleOack (
   MTFTP4_OPTION             Reply;\r
   EFI_STATUS                Status;\r
   INTN                      Expected;\r
+  EFI_UDP4_PROTOCOL         *Udp4;\r
 \r
   *Completed = FALSE;\r
 \r
@@ -548,13 +549,31 @@ Mtftp4RrqHandleOack (
       //\r
       Instance->McastIp      = Reply.McastIp;\r
       Instance->McastPort    = Reply.McastPort;\r
-      Instance->McastUdpPort = UdpIoCreateIo (\r
-                                 Instance->Service->Controller,\r
-                                 Instance->Service->Image,\r
-                                 Mtftp4RrqConfigMcastPort,\r
-                                 UDP_IO_UDP4_VERSION,\r
-                                 Instance\r
-                                 );\r
+      if (Instance->McastUdpPort == NULL) {\r
+        Instance->McastUdpPort = UdpIoCreateIo (\r
+                                   Instance->Service->Controller,\r
+                                   Instance->Service->Image,\r
+                                   Mtftp4RrqConfigMcastPort,\r
+                                   UDP_IO_UDP4_VERSION,\r
+                                   Instance\r
+                                   );\r
+        if (Instance->McastUdpPort != NULL) {\r
+          Status = gBS->OpenProtocol (\r
+                          Instance->McastUdpPort->UdpHandle,\r
+                          &gEfiUdp4ProtocolGuid,\r
+                          (VOID **) &Udp4,\r
+                          Instance->Service->Image,\r
+                          Instance->Handle,\r
+                          EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r
+                          );\r
+          if (EFI_ERROR (Status)) {\r
+            UdpIoFreeIo (Instance->McastUdpPort);\r
+            Instance->McastUdpPort = NULL;\r
+            return EFI_DEVICE_ERROR;\r
+          }\r
+        }\r
+      }\r
+\r
 \r
       if (Instance->McastUdpPort == NULL) {\r
         return EFI_DEVICE_ERROR;\r