/** @file\r
Header file for IP4Config driver.\r
\r
-Copyright (c) 2006 - 2008, Intel Corporation.<BR>\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<BR>\r
http://opensource.org/licenses/bsd-license.php\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
+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_IP4_CONFIG_PROTOCOL Ip4ConfigProtocol;\r
- EFI_NIC_IP4_CONFIG_PROTOCOL NicIp4Protocol;\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
+/**\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
-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
+ @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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