diff options
Diffstat (limited to 'NetworkPkg/Ip4Dxe/Ip4Config2Impl.c')
| -rw-r--r-- | NetworkPkg/Ip4Dxe/Ip4Config2Impl.c | 2168 |
1 files changed, 2168 insertions, 0 deletions
diff --git a/NetworkPkg/Ip4Dxe/Ip4Config2Impl.c b/NetworkPkg/Ip4Dxe/Ip4Config2Impl.c new file mode 100644 index 0000000000..9dca48ddd6 --- /dev/null +++ b/NetworkPkg/Ip4Dxe/Ip4Config2Impl.c @@ -0,0 +1,2168 @@ +/** @file
+ The implementation of EFI IPv4 Configuration II Protocol.
+
+ Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2015-2016 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "Ip4Impl.h"
+
+LIST_ENTRY mIp4Config2InstanceList = {&mIp4Config2InstanceList, &mIp4Config2InstanceList};
+
+/**
+ The event process routine when the DHCPv4 service binding protocol is installed
+ in the system.
+
+ @param[in] Event Not used.
+ @param[in] Context Pointer to the IP4 config2 instance data.
+
+**/
+VOID
+EFIAPI
+Ip4Config2OnDhcp4SbInstalled (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ );
+
+/**
+ Destroy the Dhcp4 child in IP4_CONFIG2_INSTANCE and release the resources.
+
+ @param[in, out] Instance The buffer of IP4 config2 instance to be freed.
+
+ @retval EFI_SUCCESS The child was successfully destroyed.
+ @retval Others Failed to destroy the child.
+
+**/
+EFI_STATUS
+Ip4Config2DestroyDhcp4 (
+ IN OUT IP4_CONFIG2_INSTANCE *Instance
+ )
+{
+ IP4_SERVICE *IpSb;
+ EFI_STATUS Status;
+ EFI_DHCP4_PROTOCOL *Dhcp4;
+
+ Dhcp4 = Instance->Dhcp4;
+ ASSERT (Dhcp4 != NULL);
+
+ Dhcp4->Stop (Dhcp4);
+ Dhcp4->Configure (Dhcp4, NULL);
+ Instance->Dhcp4 = NULL;
+
+ IpSb = IP4_SERVICE_FROM_IP4_CONFIG2_INSTANCE (Instance);
+
+ //
+ // Close DHCPv4 protocol and destroy the child.
+ //
+ Status = gBS->CloseProtocol (
+ Instance->Dhcp4Handle,
+ &gEfiDhcp4ProtocolGuid,
+ IpSb->Image,
+ IpSb->Controller
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = NetLibDestroyServiceChild (
+ IpSb->Controller,
+ IpSb->Image,
+ &gEfiDhcp4ServiceBindingProtocolGuid,
+ Instance->Dhcp4Handle
+ );
+
+ Instance->Dhcp4Handle = NULL;
+
+ return Status;
+}
+
+/**
+ Update the current policy to NewPolicy. During the transition
+ period, the default router list
+ and address list in all interfaces will be released.
+
+ @param[in] IpSb The IP4 service binding instance.
+ @param[in] NewPolicy The new policy to be updated to.
+
+**/
+VOID
+Ip4Config2OnPolicyChanged (
+ IN IP4_SERVICE *IpSb,
+ IN EFI_IP4_CONFIG2_POLICY NewPolicy
+ )
+{
+ IP4_INTERFACE *IpIf;
+ IP4_ROUTE_TABLE *RouteTable;
+
+ //
+ // Currently there are only two policies: static and dhcp. Regardless of
+ // what transition is going on, i.e., static -> dhcp and dhcp ->
+ // static, we have to free default router table and all addresses.
+ //
+
+ if (IpSb->DefaultInterface != NULL) {
+ if (IpSb->DefaultRouteTable != NULL) {
+ Ip4FreeRouteTable (IpSb->DefaultRouteTable);
+ IpSb->DefaultRouteTable = NULL;
+ }
+
+ Ip4CancelReceive (IpSb->DefaultInterface);
+
+ Ip4FreeInterface (IpSb->DefaultInterface, NULL);
+ IpSb->DefaultInterface = NULL;
+ }
+
+ Ip4CleanAssembleTable (&IpSb->Assemble);
+
+ //
+ // Create new default interface and route table.
+ //
+ IpIf = Ip4CreateInterface (IpSb->Mnp, IpSb->Controller, IpSb->Image);
+ if (IpIf == NULL) {
+ return ;
+ }
+
+ RouteTable = Ip4CreateRouteTable ();
+ if (RouteTable == NULL) {
+ Ip4FreeInterface (IpIf, NULL);
+ return ;
+ }
+
+ IpSb->DefaultInterface = IpIf;
+ InsertHeadList (&IpSb->Interfaces, &IpIf->Link);
+ IpSb->DefaultRouteTable = RouteTable;
+ Ip4ReceiveFrame (IpIf, NULL, Ip4AccpetFrame, IpSb);
+
+ if (IpSb->State == IP4_SERVICE_CONFIGED || IpSb->State == IP4_SERVICE_STARTED) {
+ IpSb->State = IP4_SERVICE_UNSTARTED;
+ }
+
+ //
+ // Start the dhcp configuration.
+ //
+ if (NewPolicy == Ip4Config2PolicyDhcp) {
+ Ip4StartAutoConfig (&IpSb->Ip4Config2Instance);
+ }
+
+}
+
+/**
+ Signal the registered event. It is the callback routine for NetMapIterate.
+
+ @param[in] Map Points to the list of registered event.
+ @param[in] Item The registered event.
+ @param[in] Arg Not used.
+
+ @retval EFI_SUCCESS The event was signaled successfully.
+**/
+EFI_STATUS
+EFIAPI
+Ip4Config2SignalEvent (
+ IN NET_MAP *Map,
+ IN NET_MAP_ITEM *Item,
+ IN VOID *Arg
+ )
+{
+ gBS->SignalEvent ((EFI_EVENT) Item->Key);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Read the configuration data from variable storage according to the VarName and
+ gEfiIp4Config2ProtocolGuid. It checks the integrity of variable data. If the
+ data is corrupted, it clears the variable data to ZERO. Othewise, it outputs the
+ configuration data to IP4_CONFIG2_INSTANCE.
+
+ @param[in] VarName The pointer to the variable name
+ @param[in, out] Instance The pointer to the IP4 config2 instance data.
+
+ @retval EFI_NOT_FOUND The variable can not be found or already corrupted.
+ @retval EFI_OUT_OF_RESOURCES Fail to allocate resource to complete the operation.
+ @retval EFI_SUCCESS The configuration data was retrieved successfully.
+
+**/
+EFI_STATUS
+Ip4Config2ReadConfigData (
+ IN CHAR16 *VarName,
+ IN OUT IP4_CONFIG2_INSTANCE *Instance
+ )
+{
+ EFI_STATUS Status;
+ UINTN VarSize;
+ IP4_CONFIG2_VARIABLE *Variable;
+ IP4_CONFIG2_DATA_ITEM *DataItem;
+ UINTN Index;
+ IP4_CONFIG2_DATA_RECORD DataRecord;
+ CHAR8 *Data;
+
+ //
+ // Try to read the configuration variable.
+ //
+ VarSize = 0;
+ Status = gRT->GetVariable (
+ VarName,
+ &gEfiIp4Config2ProtocolGuid,
+ NULL,
+ &VarSize,
+ NULL
+ );
+
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ //
+ // Allocate buffer and read the config variable.
+ //
+ Variable = AllocatePool (VarSize);
+ if (Variable == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Status = gRT->GetVariable (
+ VarName,
+ &gEfiIp4Config2ProtocolGuid,
+ NULL,
+ &VarSize,
+ Variable
+ );
+ if (EFI_ERROR (Status) || (UINT16) (~NetblockChecksum ((UINT8 *) Variable, (UINT32) VarSize)) != 0) {
+ //
+ // GetVariable still error or the variable is corrupted.
+ // Fall back to the default value.
+ //
+ FreePool (Variable);
+
+ //
+ // Remove the problematic variable and return EFI_NOT_FOUND, a new
+ // variable will be set again.
+ //
+ gRT->SetVariable (
+ VarName,
+ &gEfiIp4Config2ProtocolGuid,
+ IP4_CONFIG2_VARIABLE_ATTRIBUTE,
+ 0,
+ NULL
+ );
+
+ return EFI_NOT_FOUND;
+ }
+
+
+ for (Index = 0; Index < Variable->DataRecordCount; Index++) {
+
+ CopyMem (&DataRecord, &Variable->DataRecord[Index], sizeof (DataRecord));
+
+ DataItem = &Instance->DataItem[DataRecord.DataType];
+ if (DATA_ATTRIB_SET (DataItem->Attribute, DATA_ATTRIB_SIZE_FIXED) &&
+ (DataItem->DataSize != DataRecord.DataSize)
+ ) {
+ //
+ // Perhaps a corrupted data record...
+ //
+ continue;
+ }
+
+ if (!DATA_ATTRIB_SET (DataItem->Attribute, DATA_ATTRIB_SIZE_FIXED)) {
+ //
+ // This data item has variable length data.
+ //
+ DataItem->Data.Ptr = AllocatePool (DataRecord.DataSize);
+ if (DataItem->Data.Ptr == NULL) {
+ //
+ // no memory resource
+ //
+ continue;
+ }
+ }
+
+ Data = (CHAR8 *) Variable + DataRecord.Offset;
+ CopyMem (DataItem->Data.Ptr, Data, DataRecord.DataSize);
+
+ DataItem->DataSize = DataRecord.DataSize;
+ DataItem->Status = EFI_SUCCESS;
+ }
+
+ FreePool (Variable);
+ return EFI_SUCCESS;
+ }
+
+ return Status;
+}
+
+/**
+ Write the configuration data from IP4_CONFIG2_INSTANCE to variable storage.
+
+ @param[in] VarName The pointer to the variable name.
+ @param[in] Instance The pointer to the IP4 config2 instance data.
+
+ @retval EFI_OUT_OF_RESOURCES Fail to allocate resource to complete the operation.
+ @retval EFI_SUCCESS The configuration data is written successfully.
+
+**/
+EFI_STATUS
+Ip4Config2WriteConfigData (
+ IN CHAR16 *VarName,
+ IN IP4_CONFIG2_INSTANCE *Instance
+ )
+{
+ UINTN Index;
+ UINTN VarSize;
+ IP4_CONFIG2_DATA_ITEM *DataItem;
+ IP4_CONFIG2_VARIABLE *Variable;
+ IP4_CONFIG2_DATA_RECORD *DataRecord;
+ CHAR8 *Heap;
+ EFI_STATUS Status;
+
+ VarSize = sizeof (IP4_CONFIG2_VARIABLE) - sizeof (IP4_CONFIG2_DATA_RECORD);
+
+ for (Index = 0; Index < Ip4Config2DataTypeMaximum; Index++) {
+
+ DataItem = &Instance->DataItem[Index];
+ if (!DATA_ATTRIB_SET (DataItem->Attribute, DATA_ATTRIB_VOLATILE) && !EFI_ERROR (DataItem->Status)) {
+
+ VarSize += sizeof (IP4_CONFIG2_DATA_RECORD) + DataItem->DataSize;
+ }
+ }
+
+ Variable = AllocatePool (VarSize);
+ if (Variable == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Heap = (CHAR8 *) Variable + VarSize;
+ Variable->DataRecordCount = 0;
+
+ for (Index = 0; Index < Ip4Config2DataTypeMaximum; Index++) {
+
+ DataItem = &Instance->DataItem[Index];
+ if (!DATA_ATTRIB_SET (DataItem->Attribute, DATA_ATTRIB_VOLATILE) && !EFI_ERROR (DataItem->Status)) {
+
+ Heap -= DataItem->DataSize;
+ CopyMem (Heap, DataItem->Data.Ptr, DataItem->DataSize);
+
+ DataRecord = &Variable->DataRecord[Variable->DataRecordCount];
+ DataRecord->DataType = (EFI_IP4_CONFIG2_DATA_TYPE) Index;
+ DataRecord->DataSize = (UINT32) DataItem->DataSize;
+ DataRecord->Offset = (UINT16) (Heap - (CHAR8 *) Variable);
+
+ Variable->DataRecordCount++;
+ }
+ }
+
+ Variable->Checksum = 0;
+ Variable->Checksum = (UINT16) ~NetblockChecksum ((UINT8 *) Variable, (UINT32) VarSize);
+
+ Status = gRT->SetVariable (
+ VarName,
+ &gEfiIp4Config2ProtocolGuid,
+ IP4_CONFIG2_VARIABLE_ATTRIBUTE,
+ VarSize,
+ Variable
+ );
+
+ FreePool (Variable);
+
+ return Status;
+}
+
+
+/**
+ Build a EFI_IP4_ROUTE_TABLE to be returned to the caller of GetModeData.
+ The EFI_IP4_ROUTE_TABLE is clumsy to use in the internal operation of the
+ IP4 driver.
+
+ @param[in] IpSb The IP4 service binding instance.
+ @param[out] Table The built IP4 route table.
+
+ @retval EFI_SUCCESS The route table is successfully build
+ @retval EFI_NOT_FOUND Failed to allocate the memory for the rotue table.
+
+**/
+EFI_STATUS
+Ip4Config2BuildDefaultRouteTable (
+ IN IP4_SERVICE *IpSb,
+ OUT EFI_IP4_ROUTE_TABLE *Table
+ )
+{
+ LIST_ENTRY *Entry;
+ IP4_ROUTE_ENTRY *RtEntry;
+ UINT32 Count;
+ INT32 Index;
+
+ if (IpSb->DefaultRouteTable == NULL) {
+ return EFI_NOT_FOUND;
+ }
+
+ Count = IpSb->DefaultRouteTable->TotalNum;
+
+ if (Count == 0) {
+ return EFI_NOT_FOUND;
+ }
+
+ //
+ // Copy the route entry to EFI route table. Keep the order of
+ // route entry copied from most specific to default route. That
+ // is, interlevel the route entry from the instance's route area
+ // and those from the default route table's route area.
+ //
+ Count = 0;
+
+ for (Index = IP4_MASK_MAX; Index >= 0; Index--) {
+
+ NET_LIST_FOR_EACH (Entry, &(IpSb->DefaultRouteTable->RouteArea[Index])) {
+ RtEntry = NET_LIST_USER_STRUCT (Entry, IP4_ROUTE_ENTRY, Link);
+
+ EFI_IP4 (Table[Count].SubnetAddress) = HTONL (RtEntry->Dest & RtEntry->Netmask);
+ EFI_IP4 (Table[Count].SubnetMask) = HTONL (RtEntry->Netmask);
+ EFI_IP4 (Table[Count].GatewayAddress) = HTONL (RtEntry->NextHop);
+
+ Count++;
+ }
+
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ The event process routine when the DHCPv4 service binding protocol is installed
+ in the system.
+
+ @param[in] Event Not used.
+ @param[in] Context The pointer to the IP4 config2 instance data.
+
+**/
+VOID
+EFIAPI
+Ip4Config2OnDhcp4SbInstalled (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ IP4_CONFIG2_INSTANCE *Instance;
+
+ Instance = (IP4_CONFIG2_INSTANCE *) Context;
+
+ if ((Instance->Dhcp4Handle != NULL) || (Instance->Policy != Ip4Config2PolicyDhcp)) {
+ //
+ // The DHCP4 child is already created or the policy is no longer DHCP.
+ //
+ return ;
+ }
+
+ Ip4StartAutoConfig (Instance);
+}
+
+/**
+ Set the station address and subnetmask for the default interface.
+
+ @param[in] IpSb The pointer to the IP4 service binding instance.
+ @param[in] StationAddress Ip address to be set.
+ @param[in] SubnetMask Subnet to be set.
+
+ @retval EFI_SUCCESS Set default address successful.
+ @retval Others Some errors occur in setting.
+
+**/
+EFI_STATUS
+Ip4Config2SetDefaultAddr (
+ IN IP4_SERVICE *IpSb,
+ IN IP4_ADDR StationAddress,
+ IN IP4_ADDR SubnetMask
+ )
+{
+ EFI_STATUS Status;
+ IP4_INTERFACE *IpIf;
+ IP4_PROTOCOL *Ip4Instance;
+ EFI_ARP_PROTOCOL *Arp;
+ LIST_ENTRY *Entry;
+ IP4_ADDR Subnet;
+ IP4_ROUTE_TABLE *RouteTable;
+
+ IpIf = IpSb->DefaultInterface;
+ ASSERT (IpIf != NULL);
+
+ if ((IpIf->Ip == StationAddress) && (IpIf->SubnetMask == SubnetMask)) {
+ IpSb->State = IP4_SERVICE_CONFIGED;
+ return EFI_SUCCESS;
+ }
+
+ if (IpSb->Reconfig) {
+ //
+ // The default address is changed, free the previous interface first.
+ //
+ if (IpSb->DefaultRouteTable != NULL) {
+ Ip4FreeRouteTable (IpSb->DefaultRouteTable);
+ IpSb->DefaultRouteTable = NULL;
+ }
+
+ Ip4CancelReceive (IpSb->DefaultInterface);
+ Ip4FreeInterface (IpSb->DefaultInterface, NULL);
+ IpSb->DefaultInterface = NULL;
+ //
+ // Create new default interface and route table.
+ //
+ IpIf = Ip4CreateInterface (IpSb->Mnp, IpSb->Controller, IpSb->Image);
+ if (IpIf == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ RouteTable = Ip4CreateRouteTable ();
+ if (RouteTable == NULL) {
+ Ip4FreeInterface (IpIf, NULL);
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ IpSb->DefaultInterface = IpIf;
+ InsertHeadList (&IpSb->Interfaces, &IpIf->Link);
+ IpSb->DefaultRouteTable = RouteTable;
+ Ip4ReceiveFrame (IpIf, NULL, Ip4AccpetFrame, IpSb);
+ }
+
+ if (IpSb->State == IP4_SERVICE_CONFIGED) {
+ IpSb->State = IP4_SERVICE_UNSTARTED;
+ }
+
+ Status = Ip4SetAddress (IpIf, StationAddress, SubnetMask);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ if (IpIf->Arp != NULL) {
+ //
+ // A non-NULL IpIf->Arp here means a new ARP child is created when setting default address,
+ // but some IP children may have referenced the default interface before it is configured,
+ // these IP instances also consume this ARP protocol so they need to open it BY_CHILD_CONTROLLER.
+ //
+ Arp = NULL;
+ NET_LIST_FOR_EACH (Entry, &IpIf->IpInstances) {
+ Ip4Instance = NET_LIST_USER_STRUCT_S (Entry, IP4_PROTOCOL, AddrLink, IP4_PROTOCOL_SIGNATURE);
+ Status = gBS->OpenProtocol (
+ IpIf->ArpHandle,
+ &gEfiArpProtocolGuid,
+ (VOID **) &Arp,
+ gIp4DriverBinding.DriverBindingHandle,
+ Ip4Instance->Handle,
+ EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ }
+ }
+
+ //
+ // Add a route for the connected network.
+ //
+ Subnet = StationAddress & SubnetMask;
+
+ Ip4AddRoute (
+ IpSb->DefaultRouteTable,
+ Subnet,
+ SubnetMask,
+ IP4_ALLZERO_ADDRESS
+ );
+
+ IpSb->State = IP4_SERVICE_CONFIGED;
+ IpSb->Reconfig = FALSE;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Set the station address, subnetmask and gateway address for the default interface.
+
+ @param[in] Instance The pointer to the IP4 config2 instance data.
+ @param[in] StationAddress Ip address to be set.
+ @param[in] SubnetMask Subnet to be set.
+ @param[in] GatewayAddress Gateway to be set.
+
+ @retval EFI_SUCCESS Set default If successful.
+ @retval Others Errors occur as indicated.
+
+**/
+EFI_STATUS
+Ip4Config2SetDefaultIf (
+ IN IP4_CONFIG2_INSTANCE *Instance,
+ IN IP4_ADDR StationAddress,
+ IN IP4_ADDR SubnetMask,
+ IN IP4_ADDR GatewayAddress
+ )
+{
+ EFI_STATUS Status;
+ IP4_SERVICE *IpSb;
+
+ IpSb = IP4_SERVICE_FROM_IP4_CONFIG2_INSTANCE (Instance);
+
+ //
+ // Check whether the StationAddress/SubnetMask pair is valid.
+ //
+ if (!Ip4StationAddressValid (StationAddress, SubnetMask)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Status = Ip4Config2SetDefaultAddr (IpSb, StationAddress, SubnetMask);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Create a route if there is a default router.
+ //
+ if (GatewayAddress != IP4_ALLZERO_ADDRESS) {
+ Ip4AddRoute (
+ IpSb->DefaultRouteTable,
+ IP4_ALLZERO_ADDRESS,
+ IP4_ALLZERO_ADDRESS,
+ GatewayAddress
+ );
+ }
+
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Release all the DHCP related resources.
+
+ @param Instance The IP4 config2 instance.
+
+ @return None
+
+**/
+VOID
+Ip4Config2CleanDhcp4 (
+ IN IP4_CONFIG2_INSTANCE *Instance
+ )
+{
+ IP4_SERVICE *IpSb;
+
+ IpSb = IP4_SERVICE_FROM_IP4_CONFIG2_INSTANCE (Instance);
+
+ if (Instance->Dhcp4 != NULL) {
+ Instance->Dhcp4->Stop (Instance->Dhcp4);
+
+ gBS->CloseProtocol (
+ Instance->Dhcp4Handle,
+ &gEfiDhcp4ProtocolGuid,
+ IpSb->Image,
+ IpSb->Controller
+ );
+
+ Instance->Dhcp4 = NULL;
+ }
+
+ if (Instance->Dhcp4Handle != NULL) {
+ NetLibDestroyServiceChild (
+ IpSb->Controller,
+ IpSb->Image,
+ &gEfiDhcp4ServiceBindingProtocolGuid,
+ Instance->Dhcp4Handle
+ );
+
+ Instance->Dhcp4Handle = NULL;
+ }
+
+ if (Instance->Dhcp4Event != NULL) {
+ gBS->CloseEvent (Instance->Dhcp4Event);
+ Instance->Dhcp4Event = NULL;
+ }
+}
+
+/**
+ This worker function sets the DNS server list for the EFI IPv4 network
+ stack running on the communication device that this EFI_IP4_CONFIG2_PROTOCOL
+ manages. The DNS server addresses must be unicast IPv4 addresses.
+
+ @param[in] Instance The pointer to the IP4 config2 instance data.
+ @param[in] DataSize The size of the buffer pointed to by Data in bytes.
+ @param[in] Data The data buffer to set, points to an array of
+ EFI_IPv4_ADDRESS instances.
+
+ @retval EFI_BAD_BUFFER_SIZE The DataSize does not match the size of the type.
+ @retval EFI_INVALID_PARAMETER One or more fields in Data is invalid.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate resources to complete the operation.
+ @retval EFI_ABORTED The DNS server addresses to be set equal the current
+ configuration.
+ @retval EFI_SUCCESS The specified configuration data for the EFI IPv4
+ network stack was set.
+
+**/
+EFI_STATUS
+Ip4Config2SetDnsServerWorker (
+ IN IP4_CONFIG2_INSTANCE *Instance,
+ IN UINTN DataSize,
+ IN VOID *Data
+ )
+{
+ UINTN OldIndex;
+ UINTN NewIndex;
+ EFI_IPv4_ADDRESS *OldDns;
+ EFI_IPv4_ADDRESS *NewDns;
+ UINTN OldDnsCount;
+ UINTN NewDnsCount;
+ IP4_CONFIG2_DATA_ITEM *Item;
+ BOOLEAN OneAdded;
+ VOID *Tmp;
+ IP4_ADDR DnsAddress;
+
+ if ((DataSize % sizeof (EFI_IPv4_ADDRESS) != 0) || (DataSize == 0)) {
+ return EFI_BAD_BUFFER_SIZE;
+ }
+
+ Item = &Instance->DataItem[Ip4Config2DataTypeDnsServer];
+ NewDns = (EFI_IPv4_ADDRESS *) Data;
+ OldDns = Item->Data.DnsServers;
+ NewDnsCount = DataSize / sizeof (EFI_IPv4_ADDRESS);
+ OldDnsCount = Item->DataSize / sizeof (EFI_IPv4_ADDRESS);
+ OneAdded = FALSE;
+
+ if (NewDnsCount != OldDnsCount) {
+ Tmp = AllocatePool (DataSize);
+ if (Tmp == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ } else {
+ Tmp = NULL;
+ }
+
+ for (NewIndex = 0; NewIndex < NewDnsCount; NewIndex++) {
+ CopyMem (&DnsAddress, NewDns + NewIndex, sizeof (IP4_ADDR));
+ if (IP4_IS_UNSPECIFIED (NTOHL (DnsAddress)) || IP4_IS_LOCAL_BROADCAST (NTOHL (DnsAddress))) {
+ //
+ // The dns server address must be unicast.
+ //
+ if (Tmp != NULL) {
+ FreePool (Tmp);
+ }
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (OneAdded) {
+ //
+ // If any address in the new setting is not in the old settings, skip the
+ // comparision below.
+ //
+ continue;
+ }
+
+ for (OldIndex = 0; OldIndex < OldDnsCount; OldIndex++) {
+ if (EFI_IP4_EQUAL (NewDns + NewIndex, OldDns + OldIndex)) {
+ //
+ // If found break out.
+ //
+ break;
+ }
+ }
+
+ if (OldIndex == OldDnsCount) {
+ OneAdded = TRUE;
+ }
+ }
+
+ if (!OneAdded && (DataSize == Item->DataSize)) {
+ //
+ // No new item is added and the size is the same.
+ //
+ Item->Status = EFI_SUCCESS;
+ return EFI_ABORTED;
+ } else {
+ if (Tmp != NULL) {
+ if (Item->Data.Ptr != NULL) {
+ FreePool (Item->Data.Ptr);
+ }
+ Item->Data.Ptr = Tmp;
+ }
+
+ CopyMem (Item->Data.Ptr, Data, DataSize);
+ Item->DataSize = DataSize;
+ Item->Status = EFI_SUCCESS;
+ return EFI_SUCCESS;
+ }
+}
+
+
+
+/**
+ Callback function when DHCP process finished. It will save the
+ retrieved IP configure parameter from DHCP to the NVRam.
+
+ @param Event The callback event
+ @param Context Opaque context to the callback
+
+ @return None
+
+**/
+VOID
+EFIAPI
+Ip4Config2OnDhcp4Complete (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ IP4_CONFIG2_INSTANCE *Instance;
+ EFI_DHCP4_MODE_DATA Dhcp4Mode;
+ EFI_STATUS Status;
+ IP4_ADDR StationAddress;
+ IP4_ADDR SubnetMask;
+ IP4_ADDR GatewayAddress;
+ UINT32 Index;
+ UINT32 OptionCount;
+ EFI_DHCP4_PACKET_OPTION **OptionList;
+
+ Instance = (IP4_CONFIG2_INSTANCE *) Context;
+ ASSERT (Instance->Dhcp4 != NULL);
+
+ //
+ // Get the DHCP retrieved parameters
+ //
+ Status = Instance->Dhcp4->GetModeData (Instance->Dhcp4, &Dhcp4Mode);
+
+ if (EFI_ERROR (Status)) {
+ goto Exit;
+ }
+
+ if (Dhcp4Mode.State == Dhcp4Bound) {
+ StationAddress = EFI_NTOHL (Dhcp4Mode.ClientAddress);
+ SubnetMask = EFI_NTOHL (Dhcp4Mode.SubnetMask);
+ GatewayAddress = EFI_NTOHL (Dhcp4Mode.RouterAddress);
+
+ Status = Ip4Config2SetDefaultIf (Instance, StationAddress, SubnetMask, GatewayAddress);
+ if (EFI_ERROR (Status)) {
+ goto Exit;
+ }
+
+ //
+ // Parse the ACK to get required DNS server information.
+ //
+ OptionCount = 0;
+ OptionList = NULL;
+
+ Status = Instance->Dhcp4->Parse (Instance->Dhcp4, Dhcp4Mode.ReplyPacket, &OptionCount, OptionList);
+ if (Status != EFI_BUFFER_TOO_SMALL) {
+ goto Exit;
+ }
+
+ OptionList = AllocateZeroPool (OptionCount * sizeof (EFI_DHCP4_PACKET_OPTION *));
+ if (OptionList == NULL) {
+ goto Exit;
+ }
+
+ Status = Instance->Dhcp4->Parse (Instance->Dhcp4, Dhcp4Mode.ReplyPacket, &OptionCount, OptionList);
+ if (EFI_ERROR (Status)) {
+ FreePool (OptionList);
+ goto Exit;
+ }
+
+ for (Index = 0; Index < OptionCount; Index++) {
+ //
+ // Look for DNS Server opcode (6).
+ //
+ if (OptionList[Index]->OpCode == DHCP4_TAG_DNS_SERVER) {
+ if (((OptionList[Index]->Length & 0x3) != 0) || (OptionList[Index]->Length == 0)) {
+ break;
+ }
+
+ Ip4Config2SetDnsServerWorker (Instance, OptionList[Index]->Length, &OptionList[Index]->Data[0]);
+ break;
+ }
+ }
+
+ FreePool (OptionList);
+
+ Instance->DhcpSuccess = TRUE;
+ }
+
+Exit:
+ Ip4Config2CleanDhcp4 (Instance);
+ DispatchDpc ();
+}
+
+
+/**
+ Start the DHCP configuration for this IP service instance.
+ It will locates the EFI_IP4_CONFIG2_PROTOCOL, then start the
+ DHCP configuration.
+
+ @param[in] Instance The IP4 config2 instance to configure
+
+ @retval EFI_SUCCESS The auto configuration is successfully started
+ @retval Others Failed to start auto configuration.
+
+**/
+EFI_STATUS
+Ip4StartAutoConfig (
+ IN IP4_CONFIG2_INSTANCE *Instance
+ )
+{
+ IP4_SERVICE *IpSb;
+ EFI_DHCP4_PROTOCOL *Dhcp4;
+ EFI_DHCP4_MODE_DATA Dhcp4Mode;
+ EFI_DHCP4_PACKET_OPTION *OptionList[1];
+ IP4_CONFIG2_DHCP4_OPTION ParaList;
+ EFI_STATUS Status;
+
+ IpSb = IP4_SERVICE_FROM_IP4_CONFIG2_INSTANCE (Instance);
+
+ if (IpSb->State > IP4_SERVICE_UNSTARTED) {
+ return EFI_SUCCESS;
+ }
+
+ //
+ // A host must not invoke DHCP configuration if it is already
+ // participating in the DHCP configuraiton process.
+ //
+ if (Instance->Dhcp4Handle != NULL) {
+ return EFI_SUCCESS;
+ }
+
+ Status = NetLibCreateServiceChild (
+ IpSb->Controller,
+ IpSb->Image,
+ &gEfiDhcp4ServiceBindingProtocolGuid,
+ &Instance->Dhcp4Handle
+ );
+
+ if (Status == EFI_UNSUPPORTED) {
+ //
+ // No DHCPv4 Service Binding protocol, register a notify.
+ //
+ if (Instance->Dhcp4SbNotifyEvent == NULL) {
+ Instance->Dhcp4SbNotifyEvent = EfiCreateProtocolNotifyEvent (
+ &gEfiDhcp4ServiceBindingProtocolGuid,
+ TPL_CALLBACK,
+ Ip4Config2OnDhcp4SbInstalled,
+ (VOID *) Instance,
+ &Instance->Registration
+ );
+ }
+ }
+
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ if (Instance->Dhcp4SbNotifyEvent != NULL) {
+ gBS->CloseEvent (Instance->Dhcp4SbNotifyEvent);
+ }
+
+ Status = gBS->OpenProtocol (
+ Instance->Dhcp4Handle,
+ &gEfiDhcp4ProtocolGuid,
+ (VOID **) &Instance->Dhcp4,
+ IpSb->Image,
+ IpSb->Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (EFI_ERROR (Status)) {
+ NetLibDestroyServiceChild (
+ IpSb->Controller,
+ IpSb->Image,
+ &gEfiDhcp4ServiceBindingProtocolGuid,
+ Instance->Dhcp4Handle
+ );
+
+ Instance->Dhcp4Handle = NULL;
+
+ return Status;
+ }
+
+ //
+ // Check the current DHCP status, if the DHCP process has
+ // already finished, return now.
+ //
+ Dhcp4 = Instance->Dhcp4;
+ Status = Dhcp4->GetModeData (Dhcp4, &Dhcp4Mode);
+ if (Dhcp4Mode.State == Dhcp4Bound) {
+ Ip4Config2OnDhcp4Complete (NULL, Instance);
+
+ return EFI_SUCCESS;
+ }
+
+ //
+ // Try to start the DHCP process. Use most of the current
+ // DHCP configuration to avoid problems if some DHCP client
+ // yields the control of this DHCP service to us.
+ //
+ ParaList.Head.OpCode = DHCP4_TAG_PARA_LIST;
+ ParaList.Head.Length = 3;
+ ParaList.Head.Data[0] = DHCP4_TAG_NETMASK;
+ ParaList.Route = DHCP4_TAG_ROUTER;
+ ParaList.Dns = DHCP4_TAG_DNS_SERVER;
+ OptionList[0] = &ParaList.Head;
+ Dhcp4Mode.ConfigData.OptionCount = 1;
+ Dhcp4Mode.ConfigData.OptionList = OptionList;
+
+ Status = Dhcp4->Configure (Dhcp4, &Dhcp4Mode.ConfigData);
+ if (EFI_ERROR (Status)) {
+ gBS->CloseProtocol (
+ Instance->Dhcp4Handle,
+ &gEfiDhcp4ProtocolGuid,
+ IpSb->Image,
+ IpSb->Controller
+ );
+
+ NetLibDestroyServiceChild (
+ IpSb->Controller,
+ IpSb->Image,
+ &gEfiDhcp4ServiceBindingProtocolGuid,
+ Instance->Dhcp4Handle
+ );
+
+ Instance->Dhcp4 = NULL;
+
+ Instance->Dhcp4Handle = NULL;
+
+ return Status;
+ }
+
+ //
+ // Start the DHCP process
+ //
+ Status = gBS->CreateEvent (
+ EVT_NOTIFY_SIGNAL,
+ TPL_CALLBACK,
+ Ip4Config2OnDhcp4Complete,
+ Instance,
+ &Instance->Dhcp4Event
+ );
+ if (EFI_ERROR (Status)) {
+ Ip4Config2DestroyDhcp4 (Instance);
+ return Status;
+ }
+
+ Status = Dhcp4->Start (Dhcp4, Instance->Dhcp4Event);
+ if (EFI_ERROR (Status)) {
+ Ip4Config2DestroyDhcp4 (Instance);
+ gBS->CloseEvent (Instance->Dhcp4Event);
+ Instance->Dhcp4Event = NULL;
+
+ return Status;
+ }
+
+ IpSb->State = IP4_SERVICE_STARTED;
+ DispatchDpc ();
+
+ return EFI_SUCCESS;
+}
+
+
+
+/**
+ The work function is to get the interface information of the communication
+ device this IP4_CONFIG2_INSTANCE manages.
+
+ @param[in] Instance Pointer to the IP4 config2 instance data.
+ @param[in, out] DataSize On input, in bytes, the size of Data. On output, in
+ bytes, the size of buffer required to store the specified
+ configuration data.
+ @param[in] Data The data buffer in which the configuration data is returned.
+ Ignored if DataSize is ZERO.
+
+ @retval EFI_BUFFER_TOO_SMALL The size of Data is too small for the specified
+ configuration data, and the required size is
+ returned in DataSize.
+ @retval EFI_SUCCESS The specified configuration data was obtained.
+
+**/
+EFI_STATUS
+Ip4Config2GetIfInfo (
+ IN IP4_CONFIG2_INSTANCE *Instance,
+ IN OUT UINTN *DataSize,
+ IN VOID *Data OPTIONAL
+ )
+{
+ IP4_SERVICE *IpSb;
+ UINTN Length;
+ IP4_CONFIG2_DATA_ITEM *Item;
+ EFI_IP4_CONFIG2_INTERFACE_INFO *IfInfo;
+ IP4_ADDR Address;
+
+ IpSb = IP4_SERVICE_FROM_IP4_CONFIG2_INSTANCE (Instance);
+ Length = sizeof (EFI_IP4_CONFIG2_INTERFACE_INFO);
+
+ if (IpSb->DefaultRouteTable != NULL) {
+ Length += IpSb->DefaultRouteTable->TotalNum * sizeof (EFI_IP4_ROUTE_TABLE);
+ }
+
+ if (*DataSize < Length) {
+ *DataSize = Length;
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
+ //
+ // Copy the fixed size part of the interface info.
+ //
+ Item = &Instance->DataItem[Ip4Config2DataTypeInterfaceInfo];
+ IfInfo = (EFI_IP4_CONFIG2_INTERFACE_INFO *) Data;
+ CopyMem (IfInfo, Item->Data.Ptr, sizeof (EFI_IP4_CONFIG2_INTERFACE_INFO));
+
+ //
+ // Update the address info.
+ //
+ if (IpSb->DefaultInterface != NULL) {
+ Address = HTONL (IpSb->DefaultInterface->Ip);
+ CopyMem (&IfInfo->StationAddress, &Address, sizeof (EFI_IPv4_ADDRESS));
+ Address = HTONL (IpSb->DefaultInterface->SubnetMask);
+ CopyMem (&IfInfo->SubnetMask, &Address, sizeof (EFI_IPv4_ADDRESS));
+ }
+
+ if (IpSb->DefaultRouteTable != NULL) {
+ IfInfo->RouteTableSize = IpSb->DefaultRouteTable->TotalNum;
+ IfInfo->RouteTable = (EFI_IP4_ROUTE_TABLE *) ((UINT8 *) Data + sizeof (EFI_IP4_CONFIG2_INTERFACE_INFO));
+
+ Ip4Config2BuildDefaultRouteTable (IpSb, IfInfo->RouteTable);
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ The work function is to set the general configuration policy for the EFI IPv4 network
+ stack that is running on the communication device managed by this IP4_CONFIG2_INSTANCE.
+ The policy will affect other configuration settings.
+
+ @param[in] Instance Pointer to the IP4 config2 instance data.
+ @param[in] DataSize Size of the buffer pointed to by Data in bytes.
+ @param[in] Data The data buffer to set.
+
+ @retval EFI_INVALID_PARAMETER The to be set policy is invalid.
+ @retval EFI_BAD_BUFFER_SIZE The DataSize does not match the size of the type.
+ @retval EFI_ABORTED The new policy equals the current policy.
+ @retval EFI_SUCCESS The specified configuration data for the EFI IPv6
+ network stack was set.
+
+**/
+EFI_STATUS
+Ip4Config2SetPolicy (
+ IN IP4_CONFIG2_INSTANCE *Instance,
+ IN UINTN DataSize,
+ IN VOID *Data
+ )
+{
+ EFI_IP4_CONFIG2_POLICY NewPolicy;
+ IP4_CONFIG2_DATA_ITEM *DataItem;
+ IP4_SERVICE *IpSb;
+
+ if (DataSize != sizeof (EFI_IP4_CONFIG2_POLICY)) {
+ return EFI_BAD_BUFFER_SIZE;
+ }
+
+ NewPolicy = *((EFI_IP4_CONFIG2_POLICY *) Data);
+
+ if (NewPolicy >= Ip4Config2PolicyMax) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (NewPolicy == Instance->Policy) {
+ if (NewPolicy != Ip4Config2PolicyDhcp || Instance->DhcpSuccess) {
+ return EFI_ABORTED;
+ }
+ } else {
+ //
+ // The policy is changed. Clean the ManualAddress, Gateway and DnsServers,
+ // shrink the variable data size, and fire up all the related events.
+ //
+ DataItem = &Instance->DataItem[Ip4Config2DataTypeManualAddress];
+ if (DataItem->Data.Ptr != NULL) {
+ FreePool (DataItem->Data.Ptr);
+ }
+ DataItem->Data.Ptr = NULL;
+ DataItem->DataSize = 0;
+ DataItem->Status = EFI_NOT_FOUND;
+ NetMapIterate (&DataItem->EventMap, Ip4Config2SignalEvent, NULL);
+
+ DataItem = &Instance->DataItem[Ip4Config2DataTypeGateway];
+ if (DataItem->Data.Ptr != NULL) {
+ FreePool (DataItem->Data.Ptr);
+ }
+ DataItem->Data.Ptr = NULL;
+ DataItem->DataSize = 0;
+ DataItem->Status = EFI_NOT_FOUND;
+ NetMapIterate (&DataItem->EventMap, Ip4Config2SignalEvent, NULL);
+
+ DataItem = &Instance->DataItem[Ip4Config2DataTypeDnsServer];
+ if (DataItem->Data.Ptr != NULL) {
+ FreePool (DataItem->Data.Ptr);
+ }
+ DataItem->Data.Ptr = NULL;
+ DataItem->DataSize = 0;
+ DataItem->Status = EFI_NOT_FOUND;
+ NetMapIterate (&DataItem->EventMap, Ip4Config2SignalEvent, NULL);
+
+ if (NewPolicy == Ip4Config2PolicyDhcp) {
+ SET_DATA_ATTRIB (DataItem->Attribute, DATA_ATTRIB_VOLATILE);
+ } else {
+ //
+ // The policy is changed from dhcp to static. Stop the DHCPv4 process
+ // and destroy the DHCPv4 child.
+ //
+ if (Instance->Dhcp4Handle != NULL) {
+ Ip4Config2DestroyDhcp4 (Instance);
+ }
+
+ //
+ // Close the event.
+ //
+ if (Instance->Dhcp4Event != NULL) {
+ gBS->CloseEvent (Instance->Dhcp4Event);
+ Instance->Dhcp4Event = NULL;
+ }
+ }
+ }
+
+ IpSb = IP4_SERVICE_FROM_IP4_CONFIG2_INSTANCE (Instance);
+ Ip4Config2OnPolicyChanged (IpSb, NewPolicy);
+
+ Instance->Policy = NewPolicy;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ The work function is to set the station addresses manually for the EFI IPv4
+ network stack. It is only configurable when the policy is Ip4Config2PolicyStatic.
+
+ @param[in] Instance Pointer to the IP4 config2 instance data.
+ @param[in] DataSize Size of the buffer pointed to by Data in bytes.
+ @param[in] Data The data buffer to set.
+
+ @retval EFI_BAD_BUFFER_SIZE The DataSize does not match the size of the type.
+ @retval EFI_WRITE_PROTECTED The specified configuration data cannot be set
+ under the current policy.
+ @retval EFI_INVALID_PARAMETER One or more fields in Data is invalid.
+ @retval EFI_OUT_OF_RESOURCES Fail to allocate resource to complete the operation.
+ @retval EFI_NOT_READY An asynchrous process is invoked to set the specified
+ configuration data, and the process is not finished.
+ @retval EFI_ABORTED The manual addresses to be set equal current
+ configuration.
+ @retval EFI_SUCCESS The specified configuration data for the EFI IPv6
+ network stack was set.
+
+**/
+EFI_STATUS
+Ip4Config2SetManualAddress (
+ IN IP4_CONFIG2_INSTANCE *Instance,
+ IN UINTN DataSize,
+ IN VOID *Data
+ )
+{
+ EFI_IP4_CONFIG2_MANUAL_ADDRESS NewAddress;
+ IP4_CONFIG2_DATA_ITEM *DataItem;
+ EFI_STATUS Status;
+ IP4_ADDR StationAddress;
+ IP4_ADDR SubnetMask;
+ VOID *Ptr;
+ IP4_SERVICE *IpSb;
+ IP4_INTERFACE *IpIf;
+ IP4_ROUTE_TABLE *RouteTable;
+
+ DataItem = NULL;
+ Status = EFI_SUCCESS;
+ Ptr = NULL;
+ IpIf = NULL;
+ RouteTable = NULL;
+
+ IpSb = IP4_SERVICE_FROM_IP4_CONFIG2_INSTANCE (Instance);
+
+ ASSERT (Instance->DataItem[Ip4Config2DataTypeManualAddress].Status != EFI_NOT_READY);
+
+ if ((DataSize != 0) && ((DataSize % sizeof (EFI_IP4_CONFIG2_MANUAL_ADDRESS)) != 0)) {
+ return EFI_BAD_BUFFER_SIZE;
+ }
+
+ if (Instance->Policy != Ip4Config2PolicyStatic) {
+ return EFI_WRITE_PROTECTED;
+ }
+
+ DataItem = &Instance->DataItem[Ip4Config2DataTypeManualAddress];
+
+ if (Data != NULL && DataSize != 0) {
+ NewAddress = *((EFI_IP4_CONFIG2_MANUAL_ADDRESS *) Data);
+
+ StationAddress = EFI_NTOHL (NewAddress.Address);
+ SubnetMask = EFI_NTOHL (NewAddress.SubnetMask);
+
+ //
+ // Check whether the StationAddress/SubnetMask pair is valid.
+ //
+ if (!Ip4StationAddressValid (StationAddress, SubnetMask)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Store the new data, and init the DataItem status to EFI_NOT_READY because
+ // we may have an asynchronous configuration process.
+ //
+ Ptr = AllocateCopyPool (DataSize, Data);
+ if (Ptr == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ if (DataItem->Data.Ptr != NULL) {
+ FreePool (DataItem->Data.Ptr);
+ }
+
+ DataItem->Data.Ptr = Ptr;
+ DataItem->DataSize = DataSize;
+ DataItem->Status = EFI_NOT_READY;
+
+ IpSb->Reconfig = TRUE;
+ Status = Ip4Config2SetDefaultAddr (IpSb, StationAddress, SubnetMask);
+
+ DataItem->Status = Status;
+
+ if (EFI_ERROR (DataItem->Status) && DataItem->Status != EFI_NOT_READY) {
+ if (Ptr != NULL) {
+ FreePool (Ptr);
+ }
+ DataItem->Data.Ptr = NULL;
+ }
+ } else {
+ //
+ // DataSize is 0 and Data is NULL, clean up the manual address.
+ //
+ if (DataItem->Data.Ptr != NULL) {
+ FreePool (DataItem->Data.Ptr);
+ }
+ DataItem->Data.Ptr = NULL;
+ DataItem->DataSize = 0;
+ DataItem->Status = EFI_NOT_FOUND;
+
+ //
+ // Free the default router table and Interface, clean up the assemble table.
+ //
+ if (IpSb->DefaultInterface != NULL) {
+ if (IpSb->DefaultRouteTable != NULL) {
+ Ip4FreeRouteTable (IpSb->DefaultRouteTable);
+ IpSb->DefaultRouteTable = NULL;
+ }
+
+ Ip4CancelReceive (IpSb->DefaultInterface);
+
+ Ip4FreeInterface (IpSb->DefaultInterface, NULL);
+ IpSb->DefaultInterface = NULL;
+ }
+
+ Ip4CleanAssembleTable (&IpSb->Assemble);
+
+ //
+ // Create new default interface and route table.
+ //
+ IpIf = Ip4CreateInterface (IpSb->Mnp, IpSb->Controller, IpSb->Image);
+ if (IpIf == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ RouteTable = Ip4CreateRouteTable ();
+ if (RouteTable == NULL) {
+ Ip4FreeInterface (IpIf, NULL);
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ IpSb->DefaultInterface = IpIf;
+ InsertHeadList (&IpSb->Interfaces, &IpIf->Link);
+ IpSb->DefaultRouteTable = RouteTable;
+ Ip4ReceiveFrame (IpIf, NULL, Ip4AccpetFrame, IpSb);
+
+ //
+ // Reset the State to unstarted.
+ //
+ if (IpSb->State == IP4_SERVICE_CONFIGED || IpSb->State == IP4_SERVICE_STARTED) {
+ IpSb->State = IP4_SERVICE_UNSTARTED;
+ }
+ }
+
+ return Status;
+}
+
+/**
+ The work function is to set the gateway addresses manually for the EFI IPv4
+ network stack that is running on the communication device that this EFI IPv4
+ Configuration Protocol manages. It is not configurable when the policy is
+ Ip4Config2PolicyDhcp. The gateway addresses must be unicast IPv4 addresses.
+
+ @param[in] Instance The pointer to the IP4 config2 instance data.
+ @param[in] DataSize The size of the buffer pointed to by Data in bytes.
+ @param[in] Data The data buffer to set. This points to an array of
+ EFI_IPv6_ADDRESS instances.
+
+ @retval EFI_BAD_BUFFER_SIZE The DataSize does not match the size of the type.
+ @retval EFI_WRITE_PROTECTED The specified configuration data cannot be set
+ under the current policy.
+ @retval EFI_INVALID_PARAMETER One or more fields in Data is invalid.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to complete the operation.
+ @retval EFI_ABORTED The manual gateway addresses to be set equal the
+ current configuration.
+ @retval EFI_SUCCESS The specified configuration data for the EFI IPv6
+ network stack was set.
+
+**/
+EFI_STATUS
+Ip4Config2SetGateway (
+ IN IP4_CONFIG2_INSTANCE *Instance,
+ IN UINTN DataSize,
+ IN VOID *Data
+ )
+{
+ IP4_SERVICE *IpSb;
+ IP4_CONFIG2_DATA_ITEM *DataItem;
+ IP4_ADDR Gateway;
+
+ UINTN Index1;
+ UINTN Index2;
+ EFI_IPv4_ADDRESS *OldGateway;
+ EFI_IPv4_ADDRESS *NewGateway;
+ UINTN OldGatewayCount;
+ UINTN NewGatewayCount;
+ BOOLEAN OneRemoved;
+ BOOLEAN OneAdded;
+ VOID *Tmp;
+
+ OldGateway = NULL;
+ NewGateway = NULL;
+ OneRemoved = FALSE;
+ OneAdded = FALSE;
+ Tmp = NULL;
+
+ if ((DataSize != 0) && (DataSize % sizeof (EFI_IPv4_ADDRESS) != 0)) {
+ return EFI_BAD_BUFFER_SIZE;
+ }
+
+ if (Instance->Policy != Ip4Config2PolicyStatic) {
+ return EFI_WRITE_PROTECTED;
+ }
+
+ IpSb = IP4_SERVICE_FROM_IP4_CONFIG2_INSTANCE (Instance);
+
+ DataItem = &Instance->DataItem[Ip4Config2DataTypeGateway];
+ OldGateway = DataItem->Data.Gateway;
+ OldGatewayCount = DataItem->DataSize / sizeof (EFI_IPv4_ADDRESS);
+
+ for (Index1 = 0; Index1 < OldGatewayCount; Index1++) {
+ //
+ // Remove the old route entry.
+ //
+ CopyMem (&Gateway, OldGateway + Index1, sizeof (IP4_ADDR));
+ Ip4DelRoute (
+ IpSb->DefaultRouteTable,
+ IP4_ALLZERO_ADDRESS,
+ IP4_ALLZERO_ADDRESS,
+ NTOHL (Gateway)
+ );
+ OneRemoved = TRUE;
+ }
+
+ if (Data != NULL && DataSize != 0) {
+ NewGateway = (EFI_IPv4_ADDRESS *) Data;
+ NewGatewayCount = DataSize / sizeof (EFI_IPv4_ADDRESS);
+ for (Index1 = 0; Index1 < NewGatewayCount; Index1++) {
+ CopyMem (&Gateway, NewGateway + Index1, sizeof (IP4_ADDR));
+
+ if ((IpSb->DefaultInterface->SubnetMask != 0) &&
+ !NetIp4IsUnicast (NTOHL (Gateway), IpSb->DefaultInterface->SubnetMask)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ for (Index2 = Index1 + 1; Index2 < NewGatewayCount; Index2++) {
+ if (EFI_IP4_EQUAL (NewGateway + Index1, NewGateway + Index2)) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+ }
+
+ if (NewGatewayCount != OldGatewayCount) {
+ Tmp = AllocatePool (DataSize);
+ if (Tmp == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ } else {
+ Tmp = NULL;
+ }
+
+ for (Index1 = 0; Index1 < NewGatewayCount; Index1++) {
+ //
+ // Add the new route entry.
+ //
+ CopyMem (&Gateway, NewGateway + Index1, sizeof (IP4_ADDR));
+ Ip4AddRoute (
+ IpSb->DefaultRouteTable,
+ IP4_ALLZERO_ADDRESS,
+ IP4_ALLZERO_ADDRESS,
+ NTOHL (Gateway)
+ );
+
+ OneAdded = TRUE;
+ }
+
+ if (!OneRemoved && !OneAdded) {
+ DataItem->Status = EFI_SUCCESS;
+ return EFI_ABORTED;
+ } else {
+ if (Tmp != NULL) {
+ if (DataItem->Data.Ptr != NULL) {
+ FreePool (DataItem->Data.Ptr);
+ }
+ DataItem->Data.Ptr = Tmp;
+ }
+
+ CopyMem (DataItem->Data.Ptr, Data, DataSize);
+ DataItem->DataSize = DataSize;
+ DataItem->Status = EFI_SUCCESS;
+ }
+ } else {
+ //
+ // DataSize is 0 and Data is NULL, clean up the Gateway address.
+ //
+ if (DataItem->Data.Ptr != NULL) {
+ FreePool (DataItem->Data.Ptr);
+ }
+ DataItem->Data.Ptr = NULL;
+ DataItem->DataSize = 0;
+ DataItem->Status = EFI_NOT_FOUND;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ The work function is to set the DNS server list for the EFI IPv4 network
+ stack running on the communication device that this EFI_IP4_CONFIG2_PROTOCOL
+ manages. It is not configurable when the policy is Ip4Config2PolicyDhcp.
+ The DNS server addresses must be unicast IPv4 addresses.
+
+ @param[in] Instance The pointer to the IP4 config2 instance data.
+ @param[in] DataSize The size of the buffer pointed to by Data in bytes.
+ @param[in] Data The data buffer to set, points to an array of
+ EFI_IPv4_ADDRESS instances.
+
+ @retval EFI_BAD_BUFFER_SIZE The DataSize does not match the size of the type.
+ @retval EFI_WRITE_PROTECTED The specified configuration data cannot be set
+ under the current policy.
+ @retval EFI_INVALID_PARAMETER One or more fields in Data is invalid.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate resources to complete the operation.
+ @retval EFI_ABORTED The DNS server addresses to be set equal the current
+ configuration.
+ @retval EFI_SUCCESS The specified configuration data for the EFI IPv4
+ network stack was set.
+
+**/
+EFI_STATUS
+Ip4Config2SetDnsServer (
+ IN IP4_CONFIG2_INSTANCE *Instance,
+ IN UINTN DataSize,
+ IN VOID *Data
+ )
+{
+ EFI_STATUS Status;
+ IP4_CONFIG2_DATA_ITEM *Item;
+
+ Status = EFI_SUCCESS;
+ Item = NULL;
+
+ if (Instance->Policy != Ip4Config2PolicyStatic) {
+ return EFI_WRITE_PROTECTED;
+ }
+
+ Item = &Instance->DataItem[Ip4Config2DataTypeDnsServer];
+
+ if (DATA_ATTRIB_SET (Item->Attribute, DATA_ATTRIB_VOLATILE)) {
+ REMOVE_DATA_ATTRIB (Item->Attribute, DATA_ATTRIB_VOLATILE);
+ }
+
+ if (Data != NULL && DataSize != 0) {
+ Status = Ip4Config2SetDnsServerWorker (Instance, DataSize, Data);
+ } else {
+ //
+ // DataSize is 0 and Data is NULL, clean up the DnsServer address.
+ //
+ if (Item->Data.Ptr != NULL) {
+ FreePool (Item->Data.Ptr);
+ }
+ Item->Data.Ptr = NULL;
+ Item->DataSize = 0;
+ Item->Status = EFI_NOT_FOUND;
+ }
+
+ return Status;
+}
+
+/**
+ Generate the operational state of the interface this IP4 config2 instance manages
+ and output in EFI_IP4_CONFIG2_INTERFACE_INFO.
+
+ @param[in] IpSb The pointer to the IP4 service binding instance.
+ @param[out] IfInfo The pointer to the IP4 config2 interface information structure.
+
+**/
+VOID
+Ip4Config2InitIfInfo (
+ IN IP4_SERVICE *IpSb,
+ OUT EFI_IP4_CONFIG2_INTERFACE_INFO *IfInfo
+ )
+{
+ UnicodeSPrint (
+ IfInfo->Name,
+ EFI_IP4_CONFIG2_INTERFACE_INFO_NAME_SIZE,
+ L"eth%d",
+ IpSb->Ip4Config2Instance.IfIndex
+ );
+
+ IfInfo->IfType = IpSb->SnpMode.IfType;
+ IfInfo->HwAddressSize = IpSb->SnpMode.HwAddressSize;
+ CopyMem (&IfInfo->HwAddress, &IpSb->SnpMode.CurrentAddress, IfInfo->HwAddressSize);
+}
+
+
+
+/**
+ Set the configuration for the EFI IPv4 network stack running on the communication
+ device this EFI_IP4_CONFIG2_PROTOCOL instance manages.
+
+ This function is used to set the configuration data of type DataType for the EFI
+ IPv4 network stack that is running on the communication device that this EFI IPv4
+ Configuration Protocol instance manages.
+
+ DataSize is used to calculate the count of structure instances in the Data for
+ a DataType in which multiple structure instances are allowed.
+
+ This function is always non-blocking. When setting some type of configuration data,
+ an asynchronous process is invoked to check the correctness of the data, such as
+ performing Duplicate Address Detection on the manually set local IPv4 addresses.
+ EFI_NOT_READY is returned immediately to indicate that such an asynchronous process
+ is invoked, and the process is not finished yet. The caller wanting to get the result
+ of the asynchronous process is required to call RegisterDataNotify() to register an
+ event on the specified configuration data. Once the event is signaled, the caller
+ can call GetData() to obtain the configuration data and know the result.
+ For other types of configuration data that do not require an asynchronous configuration
+ process, the result of the operation is immediately returned.
+
+ @param[in] This The pointer to the EFI_IP4_CONFIG2_PROTOCOL instance.
+ @param[in] DataType The type of data to set.
+ @param[in] DataSize Size of the buffer pointed to by Data in bytes.
+ @param[in] Data The data buffer to set. The type of the data buffer is
+ associated with the DataType.
+
+ @retval EFI_SUCCESS The specified configuration data for the EFI IPv6
+ network stack was set successfully.
+ @retval EFI_INVALID_PARAMETER One or more of the following are TRUE:
+ - This is NULL.
+ - One or more fields in Data and DataSize do not match the
+ requirement of the data type indicated by DataType.
+ @retval EFI_WRITE_PROTECTED The specified configuration data is read-only or the specified
+ configuration data cannot be set under the current policy.
+ @retval EFI_ACCESS_DENIED Another set operation on the specified configuration
+ data is already in process.
+ @retval EFI_NOT_READY An asynchronous process was invoked to set the specified
+ configuration data, and the process is not finished yet.
+ @retval EFI_BAD_BUFFER_SIZE The DataSize does not match the size of the type
+ indicated by DataType.
+ @retval EFI_UNSUPPORTED This DataType is not supported.
+ @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
+ @retval EFI_DEVICE_ERROR An unexpected system error or network error occurred.
+
+**/
+EFI_STATUS
+EFIAPI
+EfiIp4Config2SetData (
+ IN EFI_IP4_CONFIG2_PROTOCOL *This,
+ IN EFI_IP4_CONFIG2_DATA_TYPE DataType,
+ IN UINTN DataSize,
+ IN VOID *Data
+ )
+{
+ EFI_TPL OldTpl;
+ EFI_STATUS Status;
+ IP4_CONFIG2_INSTANCE *Instance;
+ IP4_SERVICE *IpSb;
+
+ if ((This == NULL) || (Data == NULL && DataSize != 0) || (Data != NULL && DataSize == 0)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (DataType >= Ip4Config2DataTypeMaximum) {
+ return EFI_UNSUPPORTED;
+ }
+
+ Instance = IP4_CONFIG2_INSTANCE_FROM_PROTOCOL (This);
+ IpSb = IP4_SERVICE_FROM_IP4_CONFIG2_INSTANCE (Instance);
+ NET_CHECK_SIGNATURE (IpSb, IP4_SERVICE_SIGNATURE);
+
+
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
+
+ Status = Instance->DataItem[DataType].Status;
+ if (Status != EFI_NOT_READY) {
+
+ if (Instance->DataItem[DataType].SetData == NULL) {
+ //
+ // This type of data is readonly.
+ //
+ Status = EFI_WRITE_PROTECTED;
+ } else {
+
+ Status = Instance->DataItem[DataType].SetData (Instance, DataSize, Data);
+ if (!EFI_ERROR (Status)) {
+ //
+ // Fire up the events registered with this type of data.
+ //
+ NetMapIterate (&Instance->DataItem[DataType].EventMap, Ip4Config2SignalEvent, NULL);
+ Ip4Config2WriteConfigData (IpSb->MacString, Instance);
+ } else if (Status == EFI_ABORTED) {
+ //
+ // The SetData is aborted because the data to set is the same with
+ // the one maintained.
+ //
+ Status = EFI_SUCCESS;
+ NetMapIterate (&Instance->DataItem[DataType].EventMap, Ip4Config2SignalEvent, NULL);
+ }
+ }
+ } else {
+ //
+ // Another asynchornous process is on the way.
+ //
+ Status = EFI_ACCESS_DENIED;
+ }
+
+ gBS->RestoreTPL (OldTpl);
+
+ return Status;
+}
+
+/**
+ Get the configuration data for the EFI IPv4 network stack running on the communication
+ device that this EFI_IP4_CONFIG2_PROTOCOL instance manages.
+
+ This function returns the configuration data of type DataType for the EFI IPv4 network
+ stack running on the communication device that this EFI IPv4 Configuration Protocol instance
+ manages.
+
+ The caller is responsible for allocating the buffer used to return the specified
+ configuration data. The required size will be returned to the caller if the size of
+ the buffer is too small.
+
+ EFI_NOT_READY is returned if the specified configuration data is not ready due to an
+ asynchronous configuration process already in progress. The caller can call RegisterDataNotify()
+ to register an event on the specified configuration data. Once the asynchronous configuration
+ process is finished, the event will be signaled, and a subsequent GetData() call will return
+ the specified configuration data.
+
+ @param[in] This Pointer to the EFI_IP4_CONFIG2_PROTOCOL instance.
+ @param[in] DataType The type of data to get.
+ @param[in, out] DataSize On input, in bytes, the size of Data. On output, in bytes, the
+ size of buffer required to store the specified configuration data.
+ @param[in] Data The data buffer in which the configuration data is returned. The
+ type of the data buffer is associated with the DataType.
+ This is an optional parameter that may be NULL.
+
+ @retval EFI_SUCCESS The specified configuration data was obtained successfully.
+ @retval EFI_INVALID_PARAMETER One or more of the followings are TRUE:
+ - This is NULL.
+ - DataSize is NULL.
+ - Data is NULL if *DataSize is not zero.
+ @retval EFI_BUFFER_TOO_SMALL The size of Data is too small for the specified configuration data,
+ and the required size is returned in DataSize.
+ @retval EFI_NOT_READY The specified configuration data is not ready due to an
+ asynchronous configuration process already in progress.
+ @retval EFI_NOT_FOUND The specified configuration data is not found.
+
+**/
+EFI_STATUS
+EFIAPI
+EfiIp4Config2GetData (
+ IN EFI_IP4_CONFIG2_PROTOCOL *This,
+ IN EFI_IP4_CONFIG2_DATA_TYPE DataType,
+ IN OUT UINTN *DataSize,
+ IN VOID *Data OPTIONAL
+ )
+{
+ EFI_TPL OldTpl;
+ EFI_STATUS Status;
+ IP4_CONFIG2_INSTANCE *Instance;
+ IP4_CONFIG2_DATA_ITEM *DataItem;
+
+ if ((This == NULL) || (DataSize == NULL) || ((*DataSize != 0) && (Data == NULL))) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (DataType >= Ip4Config2DataTypeMaximum) {
+ return EFI_NOT_FOUND;
+ }
+
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
+
+ Instance = IP4_CONFIG2_INSTANCE_FROM_PROTOCOL (This);
+ DataItem = &Instance->DataItem[DataType];
+
+ Status = Instance->DataItem[DataType].Status;
+ if (!EFI_ERROR (Status)) {
+
+ if (DataItem->GetData != NULL) {
+
+ Status = DataItem->GetData (Instance, DataSize, Data);
+ } else if (*DataSize < Instance->DataItem[DataType].DataSize) {
+ //
+ // Update the buffer length.
+ //
+ *DataSize = Instance->DataItem[DataType].DataSize;
+ Status = EFI_BUFFER_TOO_SMALL;
+ } else {
+
+ *DataSize = Instance->DataItem[DataType].DataSize;
+ CopyMem (Data, Instance->DataItem[DataType].Data.Ptr, *DataSize);
+ }
+ }
+
+ gBS->RestoreTPL (OldTpl);
+
+ return Status;
+}
+
+/**
+ Register an event that is signaled whenever a configuration process on the specified
+ configuration data is done.
+
+ This function registers an event that is to be signaled whenever a configuration
+ process on the specified configuration data is performed. An event can be registered
+ for a different DataType simultaneously. The caller is responsible for determining
+ which type of configuration data causes the signaling of the event in such an event.
+
+ @param[in] This Pointer to the EFI_IP4_CONFIG2_PROTOCOL instance.
+ @param[in] DataType The type of data to unregister the event for.
+ @param[in] Event The event to register.
+
+ @retval EFI_SUCCESS The notification event for the specified configuration data is
+ registered.
+ @retval EFI_INVALID_PARAMETER This is NULL or Event is NULL.
+ @retval EFI_UNSUPPORTED The configuration data type specified by DataType is not
+ supported.
+ @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
+ @retval EFI_ACCESS_DENIED The Event is already registered for the DataType.
+
+**/
+EFI_STATUS
+EFIAPI
+EfiIp4Config2RegisterDataNotify (
+ IN EFI_IP4_CONFIG2_PROTOCOL *This,
+ IN EFI_IP4_CONFIG2_DATA_TYPE DataType,
+ IN EFI_EVENT Event
+ )
+{
+ EFI_TPL OldTpl;
+ EFI_STATUS Status;
+ IP4_CONFIG2_INSTANCE *Instance;
+ NET_MAP *EventMap;
+ NET_MAP_ITEM *Item;
+
+ if ((This == NULL) || (Event == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (DataType >= Ip4Config2DataTypeMaximum) {
+ return EFI_UNSUPPORTED;
+ }
+
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
+
+ Instance = IP4_CONFIG2_INSTANCE_FROM_PROTOCOL (This);
+ EventMap = &Instance->DataItem[DataType].EventMap;
+
+ //
+ // Check whether this event is already registered for this DataType.
+ //
+ Item = NetMapFindKey (EventMap, Event);
+ if (Item == NULL) {
+
+ Status = NetMapInsertTail (EventMap, Event, NULL);
+
+ if (EFI_ERROR (Status)) {
+
+ Status = EFI_OUT_OF_RESOURCES;
+ }
+
+ } else {
+
+ Status = EFI_ACCESS_DENIED;
+ }
+
+ gBS->RestoreTPL (OldTpl);
+
+ return Status;
+}
+
+/**
+ Remove a previously registered event for the specified configuration data.
+
+ @param This The pointer to the EFI_IP4_CONFIG2_PROTOCOL instance.
+ @param DataType The type of data to remove from the previously
+ registered event.
+ @param Event The event to be unregistered.
+
+ @retval EFI_SUCCESS The event registered for the specified
+ configuration data was removed.
+ @retval EFI_INVALID_PARAMETER This is NULL or Event is NULL.
+ @retval EFI_NOT_FOUND The Event has not been registered for the
+ specified DataType.
+
+**/
+EFI_STATUS
+EFIAPI
+EfiIp4Config2UnregisterDataNotify (
+ IN EFI_IP4_CONFIG2_PROTOCOL *This,
+ IN EFI_IP4_CONFIG2_DATA_TYPE DataType,
+ IN EFI_EVENT Event
+ )
+{
+ EFI_TPL OldTpl;
+ EFI_STATUS Status;
+ IP4_CONFIG2_INSTANCE *Instance;
+ NET_MAP_ITEM *Item;
+
+ if ((This == NULL) || (Event == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (DataType >= Ip4Config2DataTypeMaximum) {
+ return EFI_NOT_FOUND;
+ }
+
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
+
+ Instance = IP4_CONFIG2_INSTANCE_FROM_PROTOCOL (This);
+
+ Item = NetMapFindKey (&Instance->DataItem[DataType].EventMap, Event);
+ if (Item != NULL) {
+
+ NetMapRemoveItem (&Instance->DataItem[DataType].EventMap, Item, NULL);
+ Status = EFI_SUCCESS;
+ } else {
+
+ Status = EFI_NOT_FOUND;
+ }
+
+ gBS->RestoreTPL (OldTpl);
+
+ return Status;
+}
+
+/**
+ Initialize an IP4_CONFIG2_INSTANCE.
+
+ @param[out] Instance The buffer of IP4_CONFIG2_INSTANCE to be initialized.
+
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate resources to complete the operation.
+ @retval EFI_SUCCESS The IP4_CONFIG2_INSTANCE initialized successfully.
+
+**/
+EFI_STATUS
+Ip4Config2InitInstance (
+ OUT IP4_CONFIG2_INSTANCE *Instance
+ )
+{
+ IP4_SERVICE *IpSb;
+ IP4_CONFIG2_INSTANCE *TmpInstance;
+ LIST_ENTRY *Entry;
+ EFI_STATUS Status;
+ UINTN Index;
+ UINT16 IfIndex;
+ IP4_CONFIG2_DATA_ITEM *DataItem;
+
+
+ IpSb = IP4_SERVICE_FROM_IP4_CONFIG2_INSTANCE (Instance);
+
+ Instance->Signature = IP4_CONFIG2_INSTANCE_SIGNATURE;
+
+
+ //
+ // Determine the index of this interface.
+ //
+ IfIndex = 0;
+ NET_LIST_FOR_EACH (Entry, &mIp4Config2InstanceList) {
+ TmpInstance = NET_LIST_USER_STRUCT_S (Entry, IP4_CONFIG2_INSTANCE, Link, IP4_CONFIG2_INSTANCE_SIGNATURE);
+
+ if (TmpInstance->IfIndex > IfIndex) {
+ //
+ // There is a sequence hole because some interface is down.
+ //
+ break;
+ }
+
+ IfIndex++;
+ }
+
+ Instance->IfIndex = IfIndex;
+ NetListInsertBefore (Entry, &Instance->Link);
+
+ for (Index = 0; Index < Ip4Config2DataTypeMaximum; Index++) {
+ //
+ // Initialize the event map for each data item.
+ //
+ NetMapInit (&Instance->DataItem[Index].EventMap);
+ }
+
+
+ //
+ // Initialize each data type: associate storage and set data size for the
+ // fixed size data types, hook the SetData function, set the data attribute.
+ //
+ DataItem = &Instance->DataItem[Ip4Config2DataTypeInterfaceInfo];
+ DataItem->GetData = Ip4Config2GetIfInfo;
+ DataItem->Data.Ptr = &Instance->InterfaceInfo;
+ DataItem->DataSize = sizeof (Instance->InterfaceInfo);
+ SET_DATA_ATTRIB (DataItem->Attribute, DATA_ATTRIB_SIZE_FIXED | DATA_ATTRIB_VOLATILE);
+ Ip4Config2InitIfInfo (IpSb, &Instance->InterfaceInfo);
+
+ DataItem = &Instance->DataItem[Ip4Config2DataTypePolicy];
+ DataItem->SetData = Ip4Config2SetPolicy;
+ DataItem->Data.Ptr = &Instance->Policy;
+ DataItem->DataSize = sizeof (Instance->Policy);
+ Instance->Policy = Ip4Config2PolicyStatic;
+ SET_DATA_ATTRIB (DataItem->Attribute, DATA_ATTRIB_SIZE_FIXED);
+
+ DataItem = &Instance->DataItem[Ip4Config2DataTypeManualAddress];
+ DataItem->SetData = Ip4Config2SetManualAddress;
+ DataItem->Status = EFI_NOT_FOUND;
+
+ DataItem = &Instance->DataItem[Ip4Config2DataTypeGateway];
+ DataItem->SetData = Ip4Config2SetGateway;
+ DataItem->Status = EFI_NOT_FOUND;
+
+ DataItem = &Instance->DataItem[Ip4Config2DataTypeDnsServer];
+ DataItem->SetData = Ip4Config2SetDnsServer;
+ DataItem->Status = EFI_NOT_FOUND;
+
+ Instance->Configured = TRUE;
+
+ //
+ // Try to read the config data from NV variable.
+ // If not found, write initialized config data into NV variable
+ // as a default config data.
+ //
+ Status = Ip4Config2ReadConfigData (IpSb->MacString, Instance);
+ if (Status == EFI_NOT_FOUND) {
+ Status = Ip4Config2WriteConfigData (IpSb->MacString, Instance);
+ }
+
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Instance->Ip4Config2.SetData = EfiIp4Config2SetData;
+ Instance->Ip4Config2.GetData = EfiIp4Config2GetData;
+ Instance->Ip4Config2.RegisterDataNotify = EfiIp4Config2RegisterDataNotify;
+ Instance->Ip4Config2.UnregisterDataNotify = EfiIp4Config2UnregisterDataNotify;
+
+ //
+ // Publish the IP4 configuration form
+ //
+ return Ip4Config2FormInit (Instance);
+}
+
+
+/**
+ Release an IP4_CONFIG2_INSTANCE.
+
+ @param[in, out] Instance The buffer of IP4_CONFIG2_INSTANCE to be freed.
+
+**/
+VOID
+Ip4Config2CleanInstance (
+ IN OUT IP4_CONFIG2_INSTANCE *Instance
+ )
+{
+ UINTN Index;
+ IP4_CONFIG2_DATA_ITEM *DataItem;
+
+ if (Instance->DeclineAddress != NULL) {
+ FreePool (Instance->DeclineAddress);
+ }
+
+ if (!Instance->Configured) {
+ return ;
+ }
+
+ if (Instance->Dhcp4Handle != NULL) {
+
+ Ip4Config2DestroyDhcp4 (Instance);
+ }
+
+ //
+ // Close the event.
+ //
+ if (Instance->Dhcp4Event != NULL) {
+ gBS->CloseEvent (Instance->Dhcp4Event);
+ Instance->Dhcp4Event = NULL;
+ }
+
+ for (Index = 0; Index < Ip4Config2DataTypeMaximum; Index++) {
+
+ DataItem = &Instance->DataItem[Index];
+
+ if (!DATA_ATTRIB_SET (DataItem->Attribute, DATA_ATTRIB_SIZE_FIXED)) {
+ if (DataItem->Data.Ptr != NULL) {
+ FreePool (DataItem->Data.Ptr);
+ }
+ DataItem->Data.Ptr = NULL;
+ DataItem->DataSize = 0;
+ }
+
+ NetMapClean (&Instance->DataItem[Index].EventMap);
+ }
+
+ Ip4Config2FormUnload (Instance);
+
+ RemoveEntryList (&Instance->Link);
+}
+
+/**
+ The event handle for IP4 auto reconfiguration. The original default
+ interface and route table will be removed as the default.
+
+ @param[in] Context The IP4 service binding instance.
+
+**/
+VOID
+EFIAPI
+Ip4AutoReconfigCallBackDpc (
+ IN VOID *Context
+ )
+{
+ IP4_SERVICE *IpSb;
+
+ IpSb = (IP4_SERVICE *) Context;
+ NET_CHECK_SIGNATURE (IpSb, IP4_SERVICE_SIGNATURE);
+
+ if (IpSb->State > IP4_SERVICE_UNSTARTED) {
+ IpSb->State = IP4_SERVICE_UNSTARTED;
+ }
+
+ IpSb->Reconfig = TRUE;
+
+ Ip4StartAutoConfig (&IpSb->Ip4Config2Instance);
+
+ return ;
+}
+
+
+/**
+ Request Ip4AutoReconfigCallBackDpc as a DPC at TPL_CALLBACK.
+
+ @param Event The event that is signalled.
+ @param Context The IP4 service binding instance.
+
+**/
+VOID
+EFIAPI
+Ip4AutoReconfigCallBack (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ //
+ // Request Ip4AutoReconfigCallBackDpc as a DPC at TPL_CALLBACK
+ //
+ QueueDpc (TPL_CALLBACK, Ip4AutoReconfigCallBackDpc, Context);
+}
+
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