/** @file\r
+ Header file for IP4Config driver.\r
\r
-Copyright (c) 2006 - 2008, Intel Corporation\r
-All rights reserved. This program and the accompanying materials\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
+which accompanies this distribution. The full text of the license may be found at<BR>\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
-Module Name:\r
-\r
- Ip4Config.h\r
-\r
-Abstract:\r
-\r
- Header file for IP4Config driver.\r
-\r
-\r
**/\r
\r
-#ifndef __EFI_IP4CONFIG_H__\r
-#define __EFI_IP4CONFIG_H__\r
+#ifndef _EFI_IP4CONFIG_H_\r
+#define _EFI_IP4CONFIG_H_\r
\r
-#include <PiDxe.h>\r
+#include <Uefi.h>\r
\r
#include <Protocol/Dhcp4.h>\r
#include <Protocol/Ip4Config.h>\r
#include <Protocol/ManagedNetwork.h>\r
+#include <Protocol/HiiConfigAccess.h>\r
+#include <Protocol/HiiDatabase.h>\r
+#include <Protocol/HiiConfigRouting.h>\r
+#include <Protocol/ServiceBinding.h>\r
+\r
+#include <Guid/MdeModuleHii.h>\r
+#include <Guid/NicIp4ConfigNvData.h>\r
\r
+#include <Library/DevicePathLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/UefiRuntimeServicesTableLib.h>\r
#include <Library/UefiDriverEntryPoint.h>\r
#include <Library/NetLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
+#include <Library/HiiLib.h>\r
+#include <Library/PrintLib.h>\r
+#include <Library/DpcLib.h>\r
+#include <Library/UefiHiiServicesLib.h>\r
\r
-#include "NicIp4Variable.h"\r
\r
-typedef struct _IP4_CONFIG_INSTANCE IP4_CONFIG_INSTANCE;\r
+//\r
+// Global variables\r
+//\r
+extern EFI_DRIVER_BINDING_PROTOCOL gIp4ConfigDriverBinding;\r
+extern EFI_COMPONENT_NAME_PROTOCOL gIp4ConfigComponentName;\r
+extern EFI_COMPONENT_NAME2_PROTOCOL gIp4ConfigComponentName2;\r
\r
-typedef enum {\r
- IP4_CONFIG_STATE_IDLE = 0,\r
- IP4_CONFIG_STATE_STARTED,\r
- IP4_CONFIG_STATE_CONFIGURED\r
-} IP4_CONFIG_STATE;\r
+extern EFI_IP4_CONFIG_PROTOCOL mIp4ConfigProtocolTemplate;\r
\r
#define IP4_PROTO_ICMP 0x01\r
#define IP4_CONFIG_INSTANCE_SIGNATURE SIGNATURE_32 ('I', 'P', '4', 'C')\r
\r
-typedef enum {\r
- DHCP_TAG_PARA_LIST = 55,\r
- DHCP_TAG_NETMASK = 1,\r
- DHCP_TAG_ROUTER = 3\r
-} DHCP_TAGS;\r
+#define IP4_CONFIG_STATE_IDLE 0\r
+#define IP4_CONFIG_STATE_STARTED 1\r
+#define IP4_CONFIG_STATE_CONFIGURED 2\r
+\r
+#define DHCP_TAG_PARA_LIST 55\r
+#define DHCP_TAG_NETMASK 1\r
+#define DHCP_TAG_ROUTER 3\r
+\r
\r
//\r
// Configure the DHCP to request the routers and netmask\r
} IP4_CONFIG_DHCP4_OPTION;\r
#pragma pack()\r
\r
-struct _IP4_CONFIG_INSTANCE {\r
- UINT32 Signature;\r
- EFI_HANDLE Controller;\r
- EFI_HANDLE Image;\r
+typedef struct _IP4CONFIG_CALLBACK_INFO {\r
+ BOOLEAN Configured;\r
+ BOOLEAN DhcpEnabled;\r
+ EFI_IPv4_ADDRESS LocalIp;\r
+ EFI_IPv4_ADDRESS SubnetMask;\r
+ EFI_IPv4_ADDRESS Gateway;\r
+} IP4_SETTING_INFO;\r
\r
- EFI_IP4_CONFIG_PROTOCOL Ip4ConfigProtocol;\r
- EFI_NIC_IP4_CONFIG_PROTOCOL NicIp4Protocol;\r
+typedef struct _IP4_CONFIG_INSTANCE {\r
+ UINT32 Signature;\r
+ EFI_HANDLE Controller;\r
+ EFI_HANDLE Image;\r
+ EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r
+\r
+ EFI_IP4_CONFIG_PROTOCOL Ip4ConfigProtocol;\r
+\r
+ EFI_HII_CONFIG_ACCESS_PROTOCOL HiiConfigAccessProtocol;\r
+ EFI_HANDLE ChildHandle;\r
+ EFI_DEVICE_PATH_PROTOCOL *HiiVendorDevicePath;\r
+ EFI_HII_HANDLE RegisteredHandle;\r
+ IP4_SETTING_INFO Ip4ConfigCallbackInfo;\r
\r
//\r
// NicConfig's state, such as IP4_CONFIG_STATE_IDLE\r
//\r
- INTN State;\r
+ INTN State;\r
\r
//\r
// Mnp child to keep the connection with MNP.\r
//\r
- EFI_MANAGED_NETWORK_PROTOCOL *Mnp;\r
- EFI_HANDLE MnpHandle;\r
+ EFI_MANAGED_NETWORK_PROTOCOL *Mnp;\r
+ EFI_HANDLE MnpHandle;\r
\r
//\r
// User's requests data\r
//\r
- EFI_EVENT DoneEvent;\r
- EFI_EVENT ReconfigEvent;\r
- EFI_STATUS Result;\r
+ EFI_EVENT DoneEvent;\r
+ EFI_EVENT ReconfigEvent;\r
+ EFI_STATUS Result;\r
\r
//\r
// Identity of this interface and some configuration info.\r
//\r
- NIC_ADDR NicAddr;\r
- UINT16 NicName[IP4_NIC_NAME_LENGTH];\r
- UINT32 NicIndex;\r
- NIC_IP4_CONFIG_INFO *NicConfig;\r
+ NIC_ADDR NicAddr;\r
+ CHAR16 *MacString;\r
+ NIC_IP4_CONFIG_INFO *NicConfig;\r
\r
//\r
// DHCP handles to access DHCP\r
//\r
- EFI_DHCP4_PROTOCOL *Dhcp4;\r
- EFI_HANDLE Dhcp4Handle;\r
- EFI_EVENT Dhcp4Event;\r
-};\r
+ EFI_DHCP4_PROTOCOL *Dhcp4;\r
+ EFI_HANDLE Dhcp4Handle;\r
+ EFI_EVENT Dhcp4Event;\r
+\r
+ //\r
+ // A dedicated timer is used to poll underlying media status\r
+ //\r
+ EFI_EVENT Timer;\r
+\r
+ //\r
+ // Underlying media present status. \r
+ //\r
+ BOOLEAN MediaPresent;\r
+\r
+ //\r
+ // A flag to indicate EfiIp4ConfigStart should not run\r
+ //\r
+ BOOLEAN DoNotStart;\r
+} IP4_CONFIG_INSTANCE;\r
\r
#define IP4_CONFIG_INSTANCE_FROM_IP4CONFIG(this) \\r
CR (this, IP4_CONFIG_INSTANCE, Ip4ConfigProtocol, IP4_CONFIG_INSTANCE_SIGNATURE)\r
\r
-#define IP4_CONFIG_INSTANCE_FROM_NIC_IP4CONFIG(this) \\r
- CR (this, IP4_CONFIG_INSTANCE, NicIp4Protocol, IP4_CONFIG_INSTANCE_SIGNATURE)\r
+#define IP4_CONFIG_INSTANCE_FROM_CONFIG_ACCESS(this) \\r
+ CR (this, IP4_CONFIG_INSTANCE, HiiConfigAccessProtocol, IP4_CONFIG_INSTANCE_SIGNATURE)\r
+\r
\r
-extern EFI_DRIVER_BINDING_PROTOCOL gIp4ConfigDriverBinding;\r
-extern EFI_COMPONENT_NAME_PROTOCOL gIp4ConfigComponentName;\r
-extern EFI_COMPONENT_NAME2_PROTOCOL gIp4ConfigComponentName2;\r
-extern IP4_CONFIG_INSTANCE *mIp4ConfigNicList[MAX_IP4_CONFIG_IN_VARIABLE];\r
-extern EFI_IP4_CONFIG_PROTOCOL mIp4ConfigProtocolTemplate;\r
-extern EFI_NIC_IP4_CONFIG_PROTOCOL mNicIp4ConfigProtocolTemplate;\r
+/**\r
+ Set the IP configure parameters for this NIC.\r
+\r
+ If Reconfig is TRUE, the IP driver will be informed to discard current\r
+ auto configure parameter and restart the auto configuration process.\r
+ If current there is a pending auto configuration, EFI_ALREADY_STARTED is\r
+ returned. You can only change the configure setting when either\r
+ the configure has finished or not started yet. If NicConfig, the\r
+ NIC's configure parameter is removed from the variable.\r
+\r
+ @param Instance The IP4 CONFIG instance.\r
+ @param NicConfig The new NIC IP4 configure parameter.\r
+ @param Reconfig Inform the IP4 driver to restart the auto\r
+ configuration.\r
+\r
+ @retval EFI_SUCCESS The configure parameter for this NIC was\r
+ set successfully.\r
+ @retval EFI_INVALID_PARAMETER This is NULL or the configure parameter is\r
+ invalid.\r
+ @retval EFI_ALREADY_STARTED There is a pending auto configuration.\r
+ @retval EFI_NOT_FOUND No auto configure parameter is found.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+EfiNicIp4ConfigSetInfo (\r
+ IN IP4_CONFIG_INSTANCE *Instance,\r
+ IN NIC_IP4_CONFIG_INFO *NicConfig OPTIONAL,\r
+ IN BOOLEAN Reconfig\r
+ );\r
+\r
+/**\r
+ Get the NIC's configure information from the IP4 configure variable.\r
+ It will remove the invalid variable.\r
+\r
+ @param Instance The IP4 CONFIG instance.\r
+\r
+ @return NULL if no configure for the NIC in the variable, or it is invalid.\r
+ Otherwise the pointer to the NIC's IP configure parameter will be returned.\r
+\r
+**/\r
+NIC_IP4_CONFIG_INFO *\r
+EfiNicIp4ConfigGetInfo (\r
+ IN IP4_CONFIG_INSTANCE *Instance\r
+ );\r
\r
/**\r
Release all the DHCP related resources.\r
**/\r
VOID\r
Ip4ConfigCleanDhcp4 (\r
- IN IP4_CONFIG_INSTANCE *This\r
+ IN IP4_CONFIG_INSTANCE *This\r
);\r
\r
/**\r
Ip4ConfigCleanConfig (\r
IN IP4_CONFIG_INSTANCE *Instance\r
);\r
+\r
+//\r
+// EFI Component Name Functions\r
+//\r
+\r
+/**\r
+ Retrieves a Unicode string that is the user readable name of the driver.\r
+\r
+ This function retrieves the user readable name of a driver in the form of a\r
+ Unicode string. If the driver specified by This has a user readable name in\r
+ the language specified by Language, then a pointer to the driver name is\r
+ returned in DriverName, and EFI_SUCCESS is returned. If the driver specified\r
+ by This does not support the language specified by Language,\r
+ then EFI_UNSUPPORTED is returned.\r
+\r
+ @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or\r
+ EFI_COMPONENT_NAME_PROTOCOL instance.\r
+ @param Language[in] A pointer to a Null-terminated ASCII string\r
+ array indicating the language. This is the\r
+ language of the driver name that the caller is\r
+ requesting, and it must match one of the\r
+ languages specified in SupportedLanguages. The\r
+ number of languages supported by a driver is up\r
+ to the driver writer. Language is specified\r
+ in RFC 3066 or ISO 639-2 language code format.\r
+ @param DriverName[out] A pointer to the Unicode string to return.\r
+ This Unicode string is the name of the\r
+ driver specified by This in the language\r
+ specified by Language.\r
+\r
+ @retval EFI_SUCCESS The Unicode string for the Driver specified by\r
+ This and the language specified by Language was\r
+ returned in DriverName.\r
+ @retval EFI_INVALID_PARAMETER Language is NULL.\r
+ @retval EFI_INVALID_PARAMETER DriverName is NULL.\r
+ @retval EFI_UNSUPPORTED The driver specified by This does not support\r
+ the language specified by Language.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Ip4ConfigComponentNameGetDriverName (\r
+ IN EFI_COMPONENT_NAME_PROTOCOL *This,\r
+ IN CHAR8 *Language,\r
+ OUT CHAR16 **DriverName\r
+ );\r
+\r
+/**\r
+ Retrieves a Unicode string that is the user readable name of the controller\r
+ that is being managed by a driver.\r
+\r
+ This function retrieves the user readable name of the controller specified by\r
+ ControllerHandle and ChildHandle in the form of a Unicode string. If the\r
+ driver specified by This has a user readable name in the language specified by\r
+ Language, then a pointer to the controller name is returned in ControllerName,\r
+ and EFI_SUCCESS is returned. If the driver specified by This is not currently\r
+ managing the controller specified by ControllerHandle and ChildHandle,\r
+ then EFI_UNSUPPORTED is returned. If the driver specified by This does not\r
+ support the language specified by Language, then EFI_UNSUPPORTED is returned.\r
+\r
+ @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or\r
+ EFI_COMPONENT_NAME_PROTOCOL instance.\r
+ @param ControllerHandle[in] The handle of a controller that the driver\r
+ specified by This is managing. This handle\r
+ specifies the controller whose name is to be\r
+ returned.\r
+ @param ChildHandle[in] The handle of the child controller to retrieve\r
+ the name of. This is an optional parameter that\r
+ may be NULL. It will be NULL for device\r
+ drivers. It will also be NULL for a bus drivers\r
+ that wish to retrieve the name of the bus\r
+ controller. It will not be NULL for a bus\r
+ driver that wishes to retrieve the name of a\r
+ child controller.\r
+ @param Language[in] A pointer to a Null-terminated ASCII string\r
+ array indicating the language. This is the\r
+ language of the driver name that the caller is\r
+ requesting, and it must match one of the\r
+ languages specified in SupportedLanguages. The\r
+ number of languages supported by a driver is up\r
+ to the driver writer. Language is specified in\r
+ RFC 3066 or ISO 639-2 language code format.\r
+ @param ControllerName[out] A pointer to the Unicode string to return.\r
+ This Unicode string is the name of the\r
+ controller specified by ControllerHandle and\r
+ ChildHandle in the language specified by\r
+ Language from the point of view of the driver\r
+ specified by This.\r
+\r
+ @retval EFI_SUCCESS The Unicode string for the user readable name in\r
+ the language specified by Language for the\r
+ driver specified by This was returned in\r
+ DriverName.\r
+ @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.\r
+ @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid\r
+ EFI_HANDLE.\r
+ @retval EFI_INVALID_PARAMETER Language is NULL.\r
+ @retval EFI_INVALID_PARAMETER ControllerName is NULL.\r
+ @retval EFI_UNSUPPORTED The driver specified by This is not currently\r
+ managing the controller specified by\r
+ ControllerHandle and ChildHandle.\r
+ @retval EFI_UNSUPPORTED The driver specified by This does not support\r
+ the language specified by Language.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Ip4ConfigComponentNameGetControllerName (\r
+ IN EFI_COMPONENT_NAME_PROTOCOL *This,\r
+ IN EFI_HANDLE ControllerHandle,\r
+ IN EFI_HANDLE ChildHandle OPTIONAL,\r
+ IN CHAR8 *Language,\r
+ OUT CHAR16 **ControllerName\r
+ );\r
+\r
+/**\r
+ Test to see if this driver supports ControllerHandle.\r
+\r
+ @param This Protocol instance pointer.\r
+ @param ControllerHandle Handle of device to test\r
+ @param RemainingDevicePath Optional parameter use to pick a specific child\r
+ device to start.\r
+\r
+ @retval EFI_SUCCES This driver supports this device\r
+ @retval EFI_ALREADY_STARTED This driver is already running on this device\r
+ @retval other This driver does not support this device\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Ip4ConfigDriverBindingSupported (\r
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
+ IN EFI_HANDLE ControllerHandle,\r
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r
+ );\r
+\r
+/**\r
+ Start this driver on ControllerHandle.\r
+\r
+ @param This Protocol instance pointer.\r
+ @param ControllerHandle Handle of device to bind driver to\r
+ @param RemainingDevicePath Optional parameter use to pick a specific child\r
+ device to start.\r
+\r
+ @retval EFI_SUCCES This driver is added to ControllerHandle\r
+ @retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle\r
+ @retval other This driver does not support this device\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Ip4ConfigDriverBindingStart (\r
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
+ IN EFI_HANDLE ControllerHandle,\r
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r
+ );\r
+\r
+/**\r
+ Stop this driver on ControllerHandle.\r
+\r
+ @param This Protocol instance pointer.\r
+ @param ControllerHandle Handle of device to stop driver on\r
+ @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of\r
+ children is zero stop the entire bus driver.\r
+ @param ChildHandleBuffer List of Child Handles to Stop.\r
+\r
+ @retval EFI_SUCCES This driver is removed ControllerHandle\r
+ @retval other This driver was not removed from this device\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Ip4ConfigDriverBindingStop (\r
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
+ IN EFI_HANDLE ControllerHandle,\r
+ IN UINTN NumberOfChildren,\r
+ IN EFI_HANDLE *ChildHandleBuffer\r
+ );\r
+\r
+/**\r
+ Starts running the configuration policy for the EFI IPv4 Protocol driver.\r
+\r
+ The Start() function is called to determine and to begin the platform\r
+ configuration policy by the EFI IPv4 Protocol driver. This determination may\r
+ be as simple as returning EFI_UNSUPPORTED if there is no EFI IPv4 Protocol\r
+ driver configuration policy. It may be as involved as loading some defaults\r
+ from nonvolatile storage, downloading dynamic data from a DHCP server, and\r
+ checking permissions with a site policy server.\r
+ Starting the configuration policy is just the beginning. It may finish almost\r
+ instantly or it may take several minutes before it fails to retrieve configuration\r
+ information from one or more servers. Once the policy is started, drivers\r
+ should use the DoneEvent parameter to determine when the configuration policy\r
+ has completed. EFI_IP4_CONFIG_PROTOCOL.GetData() must then be called to\r
+ determine if the configuration succeeded or failed.\r
+ Until the configuration completes successfully, EFI IPv4 Protocol driver instances\r
+ that are attempting to use default configurations must return EFI_NO_MAPPING.\r
+ Once the configuration is complete, the EFI IPv4 Configuration Protocol driver\r
+ signals DoneEvent. The configuration may need to be updated in the future,\r
+ however; in this case, the EFI IPv4 Configuration Protocol driver must signal\r
+ ReconfigEvent, and all EFI IPv4 Protocol driver instances that are using default\r
+ configurations must return EFI_NO_MAPPING until the configuration policy has\r
+ been rerun.\r
+\r
+ @param This Pointer to the EFI_IP4_CONFIG_PROTOCOL instance.\r
+ @param DoneEvent Event that will be signaled when the EFI IPv4\r
+ Protocol driver configuration policy completes\r
+ execution. This event must be of type EVT_NOTIFY_SIGNAL.\r
+ @param ReconfigEvent Event that will be signaled when the EFI IPv4\r
+ Protocol driver configuration needs to be updated.\r
+ This event must be of type EVT_NOTIFY_SIGNAL.\r
+\r
+ @retval EFI_SUCCESS The configuration policy for the EFI IPv4 Protocol\r
+ driver is now running.\r
+ @retval EFI_INVALID_PARAMETER One or more of the following parameters is NULL:\r
+ This\r
+ DoneEvent\r
+ ReconfigEvent\r
+ @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r
+ @retval EFI_ALREADY_STARTED The configuration policy for the EFI IPv4 Protocol\r
+ driver was already started.\r
+ @retval EFI_DEVICE_ERROR An unexpected system error or network error occurred.\r
+ @retval EFI_UNSUPPORTED This interface does not support the EFI IPv4 Protocol\r
+ driver configuration.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+EfiIp4ConfigStart (\r
+ IN EFI_IP4_CONFIG_PROTOCOL *This,\r
+ IN EFI_EVENT DoneEvent,\r
+ IN EFI_EVENT ReconfigEvent\r
+ );\r
+\r
+/**\r
+ Stops running the configuration policy for the EFI IPv4 Protocol driver.\r
+\r
+ The Stop() function stops the configuration policy for the EFI IPv4 Protocol driver.\r
+ All configuration data will be lost after calling Stop().\r
+\r
+ @param This Pointer to the EFI_IP4_CONFIG_PROTOCOL instance.\r
+\r
+ @retval EFI_SUCCESS The configuration policy for the EFI IPv4 Protocol\r
+ driver has been stopped.\r
+ @retval EFI_INVALID_PARAMETER This is NULL.\r
+ @retval EFI_NOT_STARTED The configuration policy for the EFI IPv4 Protocol\r
+ driver was not started.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+EfiIp4ConfigStop (\r
+ IN EFI_IP4_CONFIG_PROTOCOL *This\r
+ );\r
+\r
+/**\r
+ Returns the default configuration data (if any) for the EFI IPv4 Protocol driver.\r
+\r
+ The GetData() function returns the current configuration data for the EFI IPv4\r
+ Protocol driver after the configuration policy has completed.\r
+\r
+ @param This Pointer to the EFI_IP4_CONFIG_PROTOCOL instance.\r
+ @param ConfigDataSize On input, the size of the ConfigData buffer.\r
+ On output, the count of bytes that were written\r
+ into the ConfigData buffer.\r
+ @param ConfigData Pointer to the EFI IPv4 Configuration Protocol\r
+ driver configuration data structure.\r
+ Type EFI_IP4_IPCONFIG_DATA is defined in\r
+ "Related Definitions" below.\r
+\r
+ @retval EFI_SUCCESS The EFI IPv4 Protocol driver configuration has been returned.\r
+ @retval EFI_INVALID_PARAMETER This is NULL.\r
+ @retval EFI_NOT_STARTED The configuration policy for the EFI IPv4 Protocol\r
+ driver is not running.\r
+ @retval EFI_NOT_READY EFI IPv4 Protocol driver configuration is still running.\r
+ @retval EFI_ABORTED EFI IPv4 Protocol driver configuration could not complete.\r
+ Currently not implemented.\r
+ @retval EFI_BUFFER_TOO_SMALL *ConfigDataSize is smaller than the configuration\r
+ data buffer or ConfigData is NULL.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+EfiIp4ConfigGetData (\r
+ IN EFI_IP4_CONFIG_PROTOCOL *This,\r
+ IN OUT UINTN *ConfigDataSize,\r
+ OUT EFI_IP4_IPCONFIG_DATA *ConfigData OPTIONAL\r
+ );\r
+\r
+/**\r
+ A dedicated timer is used to poll underlying media status. In case of\r
+ cable swap, a new round auto configuration will be initiated. The timer \r
+ will signal the IP4 to run the auto configuration again. IP4 driver will free\r
+ old IP address related resource, such as route table and Interface, then\r
+ initiate a DHCP round by IP4Config->Start to acquire new IP, eventually\r
+ create route table for new IP address.\r
+\r
+ @param[in] Event The IP4 service instance's heart beat timer.\r
+ @param[in] Context The IP4 service instance.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+MediaChangeDetect (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ );\r
+\r
#endif\r
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