0. Remove the unused private GUID from module source files. 1. Use gEfiCallerIdGuid replace of the private module GUID. 2. Add the public header files to define HII FormSet and PackageList GUID used in every HII driver. 3. Move two EBC protocols for debug purpose from EBC driver to MdeModulePkg Include directory. Signed-off-by: lgao4 Reviewed-by: ydong10 gdong1 tye jfan12 wli12 rsun3 jyao1 git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12373 6f19259b-4bc3-4df7-8a09-765794883524
		
			
				
	
	
		
			609 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			609 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /** @file
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|   HII Config Access protocol implementation of VLAN configuration module.
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| 
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| Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>
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| This program and the accompanying materials
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| are licensed and made available under the terms and conditions
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| of the BSD License which accompanies this distribution.  The full
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| text of the license may be found at<BR>
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| http://opensource.org/licenses/bsd-license.php
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| 
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| THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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| WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| 
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| **/
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| 
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| #include "VlanConfigImpl.h"
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| 
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| CHAR16                          mVlanStorageName[] = L"VlanNvData";
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| EFI_HII_CONFIG_ROUTING_PROTOCOL *mHiiConfigRouting = NULL;
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| 
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| VLAN_CONFIG_PRIVATE_DATA        mVlanConfigPrivateDateTemplate = {
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|   VLAN_CONFIG_PRIVATE_DATA_SIGNATURE,
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|   {
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|     VlanExtractConfig,
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|     VlanRouteConfig,
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|     VlanCallback
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|   }
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| };
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| 
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| VENDOR_DEVICE_PATH              mHiiVendorDevicePathNode = {
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|   {
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|     HARDWARE_DEVICE_PATH,
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|     HW_VENDOR_DP,
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|     {
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|       (UINT8) (sizeof (VENDOR_DEVICE_PATH)),
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|       (UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)
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|     }
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|   },
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|   VLAN_CONFIG_FORM_SET_GUID
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| };
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| 
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| /**
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|   This function allows a caller to extract the current configuration for one
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|   or more named elements from the target driver.
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| 
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|   @param[in]  This               Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
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|   @param[in]  Request            A null-terminated Unicode string in
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|                                  <ConfigRequest> format.
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|   @param[out]  Progress          On return, points to a character in the Request
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|                                  string. Points to the string's null terminator if
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|                                  request was successful. Points to the most recent
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|                                  '&' before the first failing name/value pair (or
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|                                  the beginning of the string if the failure is in
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|                                  the first name/value pair) if the request was not
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|                                  successful.
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|   @param[out]  Results           A null-terminated Unicode string in
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|                                  <ConfigAltResp> format which has all values filled
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|                                  in for the names in the Request string. String to
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|                                  be allocated by the called function.
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| 
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|   @retval EFI_SUCCESS            The Results is filled with the requested values.
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|   @retval EFI_OUT_OF_RESOURCES   Not enough memory to store the results.
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|   @retval EFI_INVALID_PARAMETER  Request is illegal syntax, or unknown name.
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|   @retval EFI_NOT_FOUND          Routing data doesn't match any storage in this
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|                                  driver.
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| 
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| **/
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| EFI_STATUS
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| EFIAPI
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| VlanExtractConfig (
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|   IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL        *This,
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|   IN CONST EFI_STRING                            Request,
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|        OUT EFI_STRING                            *Progress,
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|        OUT EFI_STRING                            *Results
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|   )
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| {
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|   EFI_STATUS                 Status;
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|   UINTN                      BufferSize;
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|   VLAN_CONFIGURATION         Configuration;
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|   VLAN_CONFIG_PRIVATE_DATA  *PrivateData;
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|   EFI_STRING                 ConfigRequestHdr;
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|   EFI_STRING                 ConfigRequest;
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|   BOOLEAN                    AllocatedRequest;
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|   UINTN                      Size;
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| 
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|   if (Progress == NULL || Results == NULL) {
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|     return EFI_INVALID_PARAMETER;
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|   }
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| 
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|   *Progress = Request;
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|   if ((Request != NULL) && !HiiIsConfigHdrMatch (Request, &gVlanConfigFormSetGuid, mVlanStorageName)) {
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|     return EFI_NOT_FOUND;
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|   }
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| 
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|   ConfigRequestHdr = NULL;
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|   ConfigRequest    = NULL;
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|   AllocatedRequest = FALSE;
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|   Size             = 0;
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| 
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|   //
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|   // Retrieve the pointer to the UEFI HII Config Routing Protocol
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|   //
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|   if (mHiiConfigRouting == NULL) {
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|     gBS->LocateProtocol (&gEfiHiiConfigRoutingProtocolGuid, NULL, (VOID **) &mHiiConfigRouting);
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|   }
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|   ASSERT (mHiiConfigRouting != NULL);
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| 
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|   //
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|   // Convert buffer data to <ConfigResp> by helper function BlockToConfig()
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|   //
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|   PrivateData = VLAN_CONFIG_PRIVATE_DATA_FROM_THIS (This);
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|   ZeroMem (&Configuration, sizeof (VLAN_CONFIGURATION));
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|   BufferSize = sizeof (Configuration);
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|   ConfigRequest = Request;
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|   if ((Request == NULL) || (StrStr (Request, L"OFFSET") == NULL)) {
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|     //
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|     // Request has no request element, construct full request string.
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|     // Allocate and fill a buffer large enough to hold the <ConfigHdr> template
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|     // followed by "&OFFSET=0&WIDTH=WWWWWWWWWWWWWWWW" followed by a Null-terminator
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|     //
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|     ConfigRequestHdr = HiiConstructConfigHdr (&gVlanConfigFormSetGuid, mVlanStorageName, PrivateData->DriverHandle);
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|     Size = (StrLen (ConfigRequestHdr) + 32 + 1) * sizeof (CHAR16);
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|     ConfigRequest = AllocateZeroPool (Size);
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|     ASSERT (ConfigRequest != NULL);
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|     AllocatedRequest = TRUE;
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|     UnicodeSPrint (ConfigRequest, Size, L"%s&OFFSET=0&WIDTH=%016LX", ConfigRequestHdr, (UINT64)BufferSize);
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|     FreePool (ConfigRequestHdr);
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|   }
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| 
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|   Status = mHiiConfigRouting->BlockToConfig (
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|                                 mHiiConfigRouting,
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|                                 ConfigRequest,
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|                                 (UINT8 *) &Configuration,
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|                                 BufferSize,
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|                                 Results,
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|                                 Progress
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|                                 );
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|   //
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|   // Free the allocated config request string.
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|   //
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|   if (AllocatedRequest) {
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|     FreePool (ConfigRequest);
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|     ConfigRequest = NULL;
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|   }
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|   //
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|   // Set Progress string to the original request string.
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|   //
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|   if (Request == NULL) {
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|     *Progress = NULL;
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|   } else if (StrStr (Request, L"OFFSET") == NULL) {
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|     *Progress = Request + StrLen (Request);
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|   }
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| 
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|   return Status;
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| }
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| 
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| 
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| /**
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|   This function processes the results of changes in configuration.
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| 
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|   @param[in]  This               Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
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|   @param[in]  Configuration      A null-terminated Unicode string in <ConfigResp>
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|                                  format.
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|   @param[out]  Progress          A pointer to a string filled in with the offset of
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|                                  the most recent '&' before the first failing
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|                                  name/value pair (or the beginning of the string if
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|                                  the failure is in the first name/value pair) or
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|                                  the terminating NULL if all was successful.
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| 
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|   @retval EFI_SUCCESS            The Results is processed successfully.
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|   @retval EFI_INVALID_PARAMETER  Configuration is NULL.
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|   @retval EFI_NOT_FOUND          Routing data doesn't match any storage in this
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|                                  driver.
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| 
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| **/
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| EFI_STATUS
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| EFIAPI
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| VlanRouteConfig (
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|   IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL      *This,
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|   IN CONST EFI_STRING                          Configuration,
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|        OUT EFI_STRING                          *Progress
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|   )
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| {
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|   if (Configuration == NULL || Progress == NULL) {
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|     return EFI_INVALID_PARAMETER;
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|   }
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| 
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|   *Progress = Configuration;
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|   if (!HiiIsConfigHdrMatch (Configuration, &gVlanConfigFormSetGuid, mVlanStorageName)) {
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|     return EFI_NOT_FOUND;
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|   }
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| 
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|   *Progress = Configuration + StrLen (Configuration);
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|   return EFI_SUCCESS;
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| }
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| 
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| /**
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|   This function processes the results of changes in configuration.
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| 
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|   @param[in]  This               Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
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|   @param[in]  Action             Specifies the type of action taken by the browser.
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|   @param[in]  QuestionId         A unique value which is sent to the original
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|                                  exporting driver so that it can identify the type
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|                                  of data to expect.
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|   @param[in]  Type               The type of value for the question.
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|   @param[in]  Value              A pointer to the data being sent to the original
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|                                  exporting driver.
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|   @param[out] ActionRequest      On return, points to the action requested by the
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|                                  callback function.
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| 
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|   @retval EFI_SUCCESS            The callback successfully handled the action.
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|   @retval EFI_OUT_OF_RESOURCES   Not enough storage is available to hold the
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|                                  variable and its data.
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|   @retval EFI_DEVICE_ERROR       The variable could not be saved.
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|   @retval EFI_UNSUPPORTED        The specified Action is not supported by the
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|                                  callback.
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| 
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| **/
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| EFI_STATUS
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| EFIAPI
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| VlanCallback (
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|   IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL      *This,
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|   IN     EFI_BROWSER_ACTION                    Action,
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|   IN     EFI_QUESTION_ID                       QuestionId,
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|   IN     UINT8                                 Type,
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|   IN     EFI_IFR_TYPE_VALUE                    *Value,
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|      OUT EFI_BROWSER_ACTION_REQUEST            *ActionRequest
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|   )
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| {
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|   VLAN_CONFIG_PRIVATE_DATA  *PrivateData;
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|   VLAN_CONFIGURATION        *Configuration;
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|   EFI_VLAN_CONFIG_PROTOCOL  *VlanConfig;
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|   UINTN                     Index;
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|   EFI_HANDLE                VlanHandle;
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| 
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|   PrivateData = VLAN_CONFIG_PRIVATE_DATA_FROM_THIS (This);
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| 
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|   if ((Action == EFI_BROWSER_ACTION_FORM_OPEN) || (Action == EFI_BROWSER_ACTION_FORM_CLOSE)) {
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|     return EFI_SUCCESS;
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|   }
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| 
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|   if (Action == EFI_BROWSER_ACTION_CHANGING) {
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|     //
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|     // Get Browser data
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|     //
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|     Configuration = AllocateZeroPool (sizeof (VLAN_CONFIGURATION));
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|     ASSERT (Configuration != NULL);
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|     HiiGetBrowserData (&gVlanConfigFormSetGuid, mVlanStorageName, sizeof (VLAN_CONFIGURATION), (UINT8 *) Configuration);
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| 
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|     VlanConfig = PrivateData->VlanConfig;
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| 
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|     switch (QuestionId) {
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|     case VLAN_ADD_QUESTION_ID:
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|       //
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|       // Add a VLAN
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|       //
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|       VlanConfig->Set (VlanConfig, Configuration->VlanId, Configuration->Priority);
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|       VlanUpdateForm (PrivateData);
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| 
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|       //
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|       // Connect the newly created VLAN device
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|       //
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|       VlanHandle = NetLibGetVlanHandle (PrivateData->ControllerHandle, Configuration->VlanId);
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|       if (VlanHandle == NULL) {
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|         //
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|         // There may be no child handle created for VLAN ID 0, connect the parent handle
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|         //
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|         VlanHandle = PrivateData->ControllerHandle;
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|       }
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|       gBS->ConnectController (VlanHandle, NULL, NULL, TRUE);
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| 
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|       //
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|       // Clear UI data
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|       //
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|       *ActionRequest = EFI_BROWSER_ACTION_REQUEST_FORM_APPLY;
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|       Configuration->VlanId = 0;
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|       Configuration->Priority = 0;
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|       break;
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| 
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|     case VLAN_REMOVE_QUESTION_ID:
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|       //
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|       // Remove VLAN
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|       //
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|       ASSERT (PrivateData->NumberOfVlan <= MAX_VLAN_NUMBER);
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|       for (Index = 0; Index < PrivateData->NumberOfVlan; Index++) {
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|         if (Configuration->VlanList[Index] != 0) {
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|           //
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|           // Checkbox is selected, need remove this VLAN
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|           //
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|           VlanConfig->Remove (VlanConfig, PrivateData->VlanId[Index]);
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|         }
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|       }
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| 
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|       VlanUpdateForm (PrivateData);
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|       if (PrivateData->NumberOfVlan == 0) {
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|         //
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|         // No VLAN device now, connect the physical NIC handle.
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|         // Note: PrivateData->NumberOfVlan has been updated by VlanUpdateForm()
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|         //
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|         gBS->ConnectController (PrivateData->ControllerHandle, NULL, NULL, TRUE);
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|       }
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| 
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|       *ActionRequest = EFI_BROWSER_ACTION_REQUEST_FORM_APPLY;
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|       ZeroMem (Configuration->VlanList, MAX_VLAN_NUMBER);
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|       break;
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| 
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|     case VLAN_UPDATE_QUESTION_ID:
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|       //
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|       // Update current VLAN list into Form.
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|       //
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|       VlanUpdateForm (PrivateData);
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|       break;
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| 
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|     default:
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|       break;
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|     }
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| 
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|     HiiSetBrowserData (&gVlanConfigFormSetGuid, mVlanStorageName, sizeof (VLAN_CONFIGURATION), (UINT8 *) Configuration, NULL);
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|     FreePool (Configuration);
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|     return EFI_SUCCESS;
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|   }
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| 
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|   //
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|   // All other action return unsupported.
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|   //
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|   return EFI_UNSUPPORTED;
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| }
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| 
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| 
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| /**
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|   This function update VLAN list in the VLAN configuration Form.
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| 
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|   @param[in, out]  PrivateData   Points to VLAN configuration private data.
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| 
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| **/
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| VOID
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| VlanUpdateForm (
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|   IN OUT VLAN_CONFIG_PRIVATE_DATA    *PrivateData
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|   )
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| {
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|   EFI_VLAN_CONFIG_PROTOCOL  *VlanConfig;
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|   UINT16                    NumberOfVlan;
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|   UINTN                     Index;
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|   EFI_VLAN_FIND_DATA        *VlanData;
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|   VOID                      *StartOpCodeHandle;
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|   EFI_IFR_GUID_LABEL        *StartLabel;
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|   VOID                      *EndOpCodeHandle;
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|   EFI_IFR_GUID_LABEL        *EndLabel;
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|   CHAR16                    *String;
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|   CHAR16                    VlanStr[30];
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|   CHAR16                    VlanIdStr[6];
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|   UINTN                     DigitalCount;
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|   EFI_STRING_ID             StringId;
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| 
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|   //
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|   // Find current VLAN configuration
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|   //
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|   VlanData = NULL;
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|   NumberOfVlan = 0;
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|   VlanConfig = PrivateData->VlanConfig;
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|   VlanConfig->Find (VlanConfig, NULL, &NumberOfVlan, &VlanData);
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| 
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|   //
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|   // Update VLAN configuration in PrivateData
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|   //
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|   if (NumberOfVlan > MAX_VLAN_NUMBER) {
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|     NumberOfVlan = MAX_VLAN_NUMBER;
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|   }
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|   PrivateData->NumberOfVlan = NumberOfVlan;
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| 
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|   //
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|   // Init OpCode Handle
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|   //
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|   StartOpCodeHandle = HiiAllocateOpCodeHandle ();
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|   ASSERT (StartOpCodeHandle != NULL);
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| 
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|   EndOpCodeHandle = HiiAllocateOpCodeHandle ();
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|   ASSERT (EndOpCodeHandle != NULL);
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| 
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|   //
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|   // Create Hii Extend Label OpCode as the start opcode
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|   //
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|   StartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (
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|                                         StartOpCodeHandle,
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|                                         &gEfiIfrTianoGuid,
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|                                         NULL,
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|                                         sizeof (EFI_IFR_GUID_LABEL)
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|                                         );
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|   StartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
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|   StartLabel->Number       = LABEL_VLAN_LIST;
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| 
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|   //
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|   // Create Hii Extend Label OpCode as the end opcode
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|   //
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|   EndLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (
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|                                       EndOpCodeHandle,
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|                                       &gEfiIfrTianoGuid,
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|                                       NULL,
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|                                       sizeof (EFI_IFR_GUID_LABEL)
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|                                       );
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|   EndLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
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|   EndLabel->Number       = LABEL_END;
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| 
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|   ZeroMem (PrivateData->VlanId, MAX_VLAN_NUMBER);
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|   for (Index = 0; Index < NumberOfVlan; Index++) {
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|     String = VlanStr;
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| 
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|     StrCpy (String, L"  VLAN ID:");
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|     String += 10;
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|     //
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|     // Pad VlanId string up to 4 characters with space
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|     //
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|     DigitalCount = UnicodeValueToString (VlanIdStr, 0, VlanData[Index].VlanId, 5);
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|     SetMem16 (String, (4 - DigitalCount) * sizeof (CHAR16), L' ');
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|     StrCpy (String + 4 - DigitalCount, VlanIdStr);
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|     String += 4;
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| 
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|     StrCpy (String, L", Priority:");
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|     String += 11;
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|     String += UnicodeValueToString (String, 0, VlanData[Index].Priority, 4);
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|     *String = 0;
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| 
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|     StringId = HiiSetString (PrivateData->HiiHandle, 0, VlanStr, NULL);
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|     ASSERT (StringId != 0);
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| 
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|     HiiCreateCheckBoxOpCode (
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|       StartOpCodeHandle,
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|       (EFI_QUESTION_ID) (VLAN_LIST_VAR_OFFSET + Index),
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|       VLAN_CONFIGURATION_VARSTORE_ID,
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|       (UINT16) (VLAN_LIST_VAR_OFFSET + Index),
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|       StringId,
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|       STRING_TOKEN (STR_VLAN_VLAN_LIST_HELP),
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|       0,
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|       0,
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|       NULL
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|       );
 | |
| 
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|     //
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|     // Save VLAN id to private data
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|     //
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|     PrivateData->VlanId[Index] = VlanData[Index].VlanId;
 | |
|   }
 | |
| 
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|   HiiUpdateForm (
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|     PrivateData->HiiHandle,     // HII handle
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|     &gVlanConfigFormSetGuid,    // Formset GUID
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|     VLAN_CONFIGURATION_FORM_ID, // Form ID
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|     StartOpCodeHandle,          // Label for where to insert opcodes
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|     EndOpCodeHandle             // Replace data
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|     );
 | |
| 
 | |
|   HiiFreeOpCodeHandle (StartOpCodeHandle);
 | |
|   HiiFreeOpCodeHandle (EndOpCodeHandle);
 | |
| 
 | |
|   if (VlanData != NULL) {
 | |
|     FreePool (VlanData);
 | |
|   }
 | |
| }
 | |
| 
 | |
| 
 | |
| /**
 | |
|   This function publish the VLAN configuration Form for a network device. The
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|   HII Config Access protocol will be installed on a child handle of the network
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|   device.
 | |
| 
 | |
|   @param[in, out]  PrivateData   Points to VLAN configuration private data.
 | |
| 
 | |
|   @retval EFI_SUCCESS            HII Form is installed for this network device.
 | |
|   @retval EFI_OUT_OF_RESOURCES   Not enough resource for HII Form installation.
 | |
|   @retval Others                 Other errors as indicated.
 | |
| 
 | |
| **/
 | |
| EFI_STATUS
 | |
| InstallVlanConfigForm (
 | |
|   IN OUT VLAN_CONFIG_PRIVATE_DATA    *PrivateData
 | |
|   )
 | |
| {
 | |
|   EFI_STATUS                      Status;
 | |
|   EFI_HII_HANDLE                  HiiHandle;
 | |
|   EFI_HANDLE                      DriverHandle;
 | |
|   CHAR16                          Str[26 + sizeof (EFI_MAC_ADDRESS) * 2 + 1];
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|   CHAR16                          *MacString;
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|   EFI_DEVICE_PATH_PROTOCOL        *ChildDevicePath;
 | |
|   EFI_HII_CONFIG_ACCESS_PROTOCOL  *ConfigAccess;
 | |
| 
 | |
|   //
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|   // Create child handle and install HII Config Access Protocol
 | |
|   //
 | |
|   ChildDevicePath = AppendDevicePathNode (
 | |
|                       PrivateData->ParentDevicePath,
 | |
|                       (CONST EFI_DEVICE_PATH_PROTOCOL *) &mHiiVendorDevicePathNode
 | |
|                       );
 | |
|   if (ChildDevicePath == NULL) {
 | |
|     return EFI_OUT_OF_RESOURCES;
 | |
|   }
 | |
|   PrivateData->ChildDevicePath = ChildDevicePath;
 | |
| 
 | |
|   DriverHandle = NULL;
 | |
|   ConfigAccess = &PrivateData->ConfigAccess;
 | |
|   Status = gBS->InstallMultipleProtocolInterfaces (
 | |
|                   &DriverHandle,
 | |
|                   &gEfiDevicePathProtocolGuid,
 | |
|                   ChildDevicePath,
 | |
|                   &gEfiHiiConfigAccessProtocolGuid,
 | |
|                   ConfigAccess,
 | |
|                   NULL
 | |
|                   );
 | |
|   if (EFI_ERROR (Status)) {
 | |
|     return Status;
 | |
|   }
 | |
|   PrivateData->DriverHandle = DriverHandle;
 | |
| 
 | |
|   //
 | |
|   // Publish the HII package list
 | |
|   //
 | |
|   HiiHandle = HiiAddPackages (
 | |
|                 &gVlanConfigFormSetGuid,
 | |
|                 DriverHandle,
 | |
|                 VlanConfigDxeStrings,
 | |
|                 VlanConfigBin,
 | |
|                 NULL
 | |
|                 );
 | |
|   if (HiiHandle == NULL) {
 | |
|     return EFI_OUT_OF_RESOURCES;
 | |
|   }
 | |
|   PrivateData->HiiHandle = HiiHandle;
 | |
| 
 | |
|   //
 | |
|   // Update formset title help string.
 | |
|   //
 | |
|   MacString = NULL;
 | |
|   Status = NetLibGetMacString (PrivateData->ControllerHandle, PrivateData->ImageHandle, &MacString);
 | |
|   if (EFI_ERROR (Status)) {
 | |
|     return Status;
 | |
|   }
 | |
|   PrivateData->MacString = MacString;
 | |
| 
 | |
|   StrCpy (Str, L"VLAN Configuration (MAC:");
 | |
|   StrnCat (Str, MacString, sizeof (EFI_MAC_ADDRESS) * 2);
 | |
|   StrCat (Str, L")");
 | |
|   HiiSetString (
 | |
|     HiiHandle,
 | |
|     STRING_TOKEN (STR_VLAN_FORM_SET_TITLE_HELP),
 | |
|     Str,
 | |
|     NULL
 | |
|     );
 | |
| 
 | |
|   //
 | |
|   // Update form title help string.
 | |
|   //
 | |
|   HiiSetString (
 | |
|     HiiHandle,
 | |
|     STRING_TOKEN (STR_VLAN_FORM_HELP),
 | |
|     Str,
 | |
|     NULL
 | |
|     );
 | |
| 
 | |
|   return EFI_SUCCESS;
 | |
| }
 | |
| 
 | |
| /**
 | |
|   This function remove the VLAN configuration Form for a network device. The
 | |
|   child handle for HII Config Access protocol will be destroyed.
 | |
| 
 | |
|   @param[in, out]  PrivateData   Points to VLAN configuration private data.
 | |
| 
 | |
| **/
 | |
| VOID
 | |
| UninstallVlanConfigForm (
 | |
|   IN OUT VLAN_CONFIG_PRIVATE_DATA    *PrivateData
 | |
|   )
 | |
| {
 | |
|   //
 | |
|   // Free MAC string
 | |
|   //
 | |
|   if (PrivateData->MacString != NULL) {
 | |
|     FreePool (PrivateData->MacString);
 | |
|     PrivateData->MacString = NULL;
 | |
|   }
 | |
| 
 | |
|   //
 | |
|   // Uninstall HII package list
 | |
|   //
 | |
|   if (PrivateData->HiiHandle != NULL) {
 | |
|     HiiRemovePackages (PrivateData->HiiHandle);
 | |
|     PrivateData->HiiHandle = NULL;
 | |
|   }
 | |
| 
 | |
|   //
 | |
|   // Uninstall HII Config Access Protocol
 | |
|   //
 | |
|   if (PrivateData->DriverHandle != NULL) {
 | |
|     gBS->UninstallMultipleProtocolInterfaces (
 | |
|            PrivateData->DriverHandle,
 | |
|            &gEfiDevicePathProtocolGuid,
 | |
|            PrivateData->ChildDevicePath,
 | |
|            &gEfiHiiConfigAccessProtocolGuid,
 | |
|            &PrivateData->ConfigAccess,
 | |
|            NULL
 | |
|            );
 | |
|     PrivateData->DriverHandle = NULL;
 | |
| 
 | |
|     if (PrivateData->ChildDevicePath != NULL) {
 | |
|       FreePool (PrivateData->ChildDevicePath);
 | |
|       PrivateData->ChildDevicePath = NULL;
 | |
|     }
 | |
|   }
 | |
| }
 |