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audk/NetworkPkg/IScsiDxe/IScsiIbft.c

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/** @file
Implementation for iSCSI Boot Firmware Table publication.
Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "IScsiImpl.h"
BOOLEAN mIbftInstalled = FALSE;
UINTN mTableKey;
/**
Initialize the header of the iSCSI Boot Firmware Table.
@param[out] Header The header of the iSCSI Boot Firmware Table.
@param[in] OemId The OEM ID.
@param[in] OemTableId The OEM table ID for the iBFT.
**/
VOID
IScsiInitIbfTableHeader (
OUT EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_HEADER *Header,
IN UINT8 *OemId,
IN UINT64 *OemTableId
)
{
Header->Signature = EFI_ACPI_3_0_ISCSI_BOOT_FIRMWARE_TABLE_SIGNATURE;
Header->Length = IBFT_HEAP_OFFSET;
Header->Revision = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_REVISION;
Header->Checksum = 0;
CopyMem (Header->OemId, OemId, sizeof (Header->OemId));
CopyMem (&Header->OemTableId, OemTableId, sizeof (UINT64));
}
/**
Initialize the control section of the iSCSI Boot Firmware Table.
@param[in] Table The ACPI table.
**/
VOID
IScsiInitControlSection (
IN EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_HEADER *Table
)
{
EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_CONTROL_STRUCTURE *Control;
UINTN NumOffset;
Control = (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_CONTROL_STRUCTURE *) (Table + 1);
Control->Header.StructureId = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_CONTROL_STRUCTURE_ID;
Control->Header.Version = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_CONTROL_STRUCTURE_VERSION;
Control->Header.Length = (UINT16) sizeof (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_CONTROL_STRUCTURE);
//
// If in multipathing mode, enable the Boot Failover Flag.
// If in single path mode, disable it. Mix-model is not allowed.
//
// BUGBUG: if Boot Failover Flag is set to 1, the OS installer cannot
// find the iSCSI mapped disk. So still keep not set for single path mode.
//
if (mPrivate->EnableMpio) {
Control->Header.Flags = 0;
NumOffset = 2 * (mPrivate->MpioCount - mPrivate->Krb5MpioCount);
} else {
NumOffset = 2 * mPrivate->ValidSinglePathCount;
}
//
// Each attempt occupies two offsets: one for the NIC section;
// the other for the Target section.
//
if (NumOffset > 4) {
//
// Need expand the control section if more than 2 NIC/Target attempts
// exist.
//
Control->Header.Length = (UINT16) (Control->Header.Length + (NumOffset - 4) * sizeof (UINT16));
}
}
/**
Add one item into the heap.
@param[in, out] Heap On input, the current address of the heap. On output, the address of
the heap after the item is added.
@param[in] Data The data to add into the heap.
@param[in] Len Length of the Data in byte.
**/
VOID
IScsiAddHeapItem (
IN OUT UINT8 **Heap,
IN VOID *Data,
IN UINTN Len
)
{
//
// Add one byte for the NULL delimiter.
//
*Heap -= Len + 1;
CopyMem (*Heap, Data, Len);
*(*Heap + Len) = 0;
}
/**
Fill the Initiator section of the iSCSI Boot Firmware Table.
@param[in] Table The ACPI table.
@param[in, out] Heap The heap.
**/
VOID
IScsiFillInitiatorSection (
IN EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_HEADER *Table,
IN OUT UINT8 **Heap
)
{
EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_CONTROL_STRUCTURE *Control;
EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_INITIATOR_STRUCTURE *Initiator;
Control = (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_CONTROL_STRUCTURE *) (Table + 1);
//
// Initiator section immediately follows the control section.
//
Initiator = (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_INITIATOR_STRUCTURE *)
((UINT8 *) Control + IBFT_ROUNDUP (Control->Header.Length));
Control->InitiatorOffset = (UINT16) ((UINTN) Initiator - (UINTN) Table);
Initiator->Header.StructureId = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_INITIATOR_STRUCTURE_ID;
Initiator->Header.Version = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_INITIATOR_STRUCTURE_VERSION;
Initiator->Header.Length = (UINT16) sizeof (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_INITIATOR_STRUCTURE);
Initiator->Header.Flags = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_INITIATOR_STRUCTURE_FLAG_BLOCK_VALID |
EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_INITIATOR_STRUCTURE_FLAG_BOOT_SELECTED;
//
// Fill the iSCSI Initiator Name into the heap.
//
IScsiAddHeapItem (Heap, mPrivate->InitiatorName, mPrivate->InitiatorNameLength - 1);
Initiator->IScsiNameLength = (UINT16) (mPrivate->InitiatorNameLength - 1);
Initiator->IScsiNameOffset = (UINT16) ((UINTN) *Heap - (UINTN) Table);
}
/**
Map the v4 IP address into v6 IP address.
@param[in] V4 The v4 IP address.
@param[out] V6 The v6 IP address.
**/
VOID
IScsiMapV4ToV6Addr (
IN EFI_IPv4_ADDRESS *V4,
OUT EFI_IPv6_ADDRESS *V6
)
{
UINTN Index;
ZeroMem (V6, sizeof (EFI_IPv6_ADDRESS));
V6->Addr[10] = 0xff;
V6->Addr[11] = 0xff;
for (Index = 0; Index < 4; Index++) {
V6->Addr[12 + Index] = V4->Addr[Index];
}
}
/**
Fill the NIC and target sections in iSCSI Boot Firmware Table.
@param[in] Table The buffer of the ACPI table.
@param[in, out] Heap The heap buffer used to store the variable length
parameters such as iSCSI name.
**/
VOID
IScsiFillNICAndTargetSections (
IN EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_HEADER *Table,
IN OUT UINT8 **Heap
)
{
EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_CONTROL_STRUCTURE *Control;
EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_NIC_STRUCTURE *Nic;
EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_TARGET_STRUCTURE *Target;
ISCSI_SESSION_CONFIG_NVDATA *NvData;
ISCSI_CHAP_AUTH_CONFIG_NVDATA *AuthConfig;
UINT16 *SectionOffset;
UINTN Index;
UINT16 Length;
LIST_ENTRY *Entry;
ISCSI_ATTEMPT_CONFIG_NVDATA *Attempt;
ISCSI_NIC_INFO *NicInfo;
BOOLEAN Flag;
//
// Get the offset of the first Nic and Target section.
//
Control = (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_CONTROL_STRUCTURE *) (Table + 1);
Nic = (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_NIC_STRUCTURE *) ((UINTN) Table +
Control->InitiatorOffset + IBFT_ROUNDUP (sizeof (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_INITIATOR_STRUCTURE)));
Target = (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_TARGET_STRUCTURE *) ((UINTN) Nic +
IBFT_ROUNDUP (sizeof (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_NIC_STRUCTURE)));
SectionOffset = &Control->NIC0Offset;
Index = 0;
Flag = TRUE;
NET_LIST_FOR_EACH (Entry, &mPrivate->AttemptConfigs) {
if (Index == 0) {
//
// First entry should be boot selected entry.
//
Attempt = IScsiConfigGetAttemptByConfigIndex (mPrivate->BootSelectedIndex);
if (Attempt == NULL) {
//
// First boot selected entry can not be found.
//
break;
}
ASSERT (Attempt->SessionConfigData.Enabled != ISCSI_DISABLED);
} else {
if (Index == 1 && Flag) {
Entry = mPrivate->AttemptConfigs.ForwardLink;
Flag = FALSE;
}
Attempt = NET_LIST_USER_STRUCT (Entry, ISCSI_ATTEMPT_CONFIG_NVDATA, Link);
if (Attempt->AttemptConfigIndex == mPrivate->BootSelectedIndex) {
continue;
}
}
if (Attempt->SessionConfigData.Enabled == ISCSI_DISABLED) {
continue;
}
//
// Krb5 attempt will not be recorded in iBFT.
//
if (Attempt->AuthenticationType == ISCSI_AUTH_TYPE_KRB) {
continue;
}
//
// If multipath mode is enabled, only the attempts in MPIO will be recorded in iBFT.
//
if (mPrivate->EnableMpio && Attempt->SessionConfigData.Enabled != ISCSI_ENABLED_FOR_MPIO) {
continue;
}
//
// Only the valid attempts will be recorded.
//
if (!Attempt->ValidiBFTPath) {
continue;
}
NvData = &Attempt->SessionConfigData;
AuthConfig = &Attempt->AuthConfigData.CHAP;
//
// Fill the Nic section.
//
Nic->Header.StructureId = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_NIC_STRUCTURE_ID;
Nic->Header.Version = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_NIC_STRUCTURE_VERSION;
Nic->Header.Length = (UINT16) sizeof (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_NIC_STRUCTURE);
Nic->Header.Index = (UINT8) Index;
Nic->Header.Flags = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_NIC_STRUCTURE_FLAG_BLOCK_VALID |
EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_NIC_STRUCTURE_FLAG_GLOBAL;
if (Index == 0) {
Nic->Header.Flags |= EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_NIC_STRUCTURE_FLAG_BOOT_SELECTED;
}
if (NvData->InitiatorInfoFromDhcp) {
Nic->Origin = IpPrefixOriginDhcp;
} else {
Nic->Origin = IpPrefixOriginManual;
}
if (NvData->IpMode == IP_MODE_IP4 || NvData->IpMode == IP_MODE_AUTOCONFIG) {
//
// Get the subnet mask prefix length.
//
Nic->SubnetMaskPrefixLength = IScsiGetSubnetMaskPrefixLength (&NvData->SubnetMask);
//
// Map the various v4 addresses into v6 addresses.
//
IScsiMapV4ToV6Addr (&NvData->LocalIp.v4, &Nic->Ip);
IScsiMapV4ToV6Addr (&NvData->Gateway.v4, &Nic->Gateway);
IScsiMapV4ToV6Addr (&Attempt->PrimaryDns.v4, &Nic->PrimaryDns);
IScsiMapV4ToV6Addr (&Attempt->SecondaryDns.v4, &Nic->SecondaryDns);
IScsiMapV4ToV6Addr (&Attempt->DhcpServer.v4, &Nic->DhcpServer);
} else if (NvData->IpMode == IP_MODE_IP6 || NvData->IpMode == IP_MODE_AUTOCONFIG) {
Nic->SubnetMaskPrefixLength = NvData->PrefixLength;
CopyMem (&Nic->Ip, &NvData->LocalIp, sizeof (EFI_IPv6_ADDRESS));
CopyMem (&Nic->Gateway, &NvData->Gateway, sizeof (EFI_IPv6_ADDRESS));
CopyMem (&Nic->PrimaryDns, &Attempt->PrimaryDns, sizeof (EFI_IPv6_ADDRESS));
CopyMem (&Nic->SecondaryDns, &Attempt->SecondaryDns, sizeof (EFI_IPv6_ADDRESS));
CopyMem (&Nic->DhcpServer, &Attempt->DhcpServer, sizeof (EFI_IPv6_ADDRESS));
} else {
ASSERT (FALSE);
}
//
// Get Nic Info: VLAN tag, Mac address, PCI location.
//
NicInfo = IScsiGetNicInfoByIndex (Attempt->NicIndex);
ASSERT (NicInfo != NULL);
Nic->VLanTag = NicInfo->VlanId;
CopyMem (Nic->Mac, &NicInfo->PermanentAddress, sizeof (Nic->Mac));
Nic->PciLocation = (UINT16) ((NicInfo->BusNumber << 8) |
(NicInfo->DeviceNumber << 3) | NicInfo->FunctionNumber);
*SectionOffset = (UINT16) ((UINTN) Nic - (UINTN) Table);
SectionOffset++;
//
// Fill the Target section.
//
Target->Header.StructureId = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_TARGET_STRUCTURE_ID;
Target->Header.Version = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_TARGET_STRUCTURE_VERSION;
Target->Header.Length = (UINT16) sizeof (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_TARGET_STRUCTURE);
Target->Header.Index = (UINT8) Index;
Target->Header.Flags = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_TARGET_STRUCTURE_FLAG_BLOCK_VALID;
if (Index == 0) {
Target->Header.Flags |= EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_TARGET_STRUCTURE_FLAG_BOOT_SELECTED;
}
Target->Port = NvData->TargetPort;
if (Attempt->AuthenticationType == ISCSI_AUTH_TYPE_CHAP) {
if (AuthConfig->CHAPType == ISCSI_CHAP_UNI) {
Target->CHAPType = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_TARGET_STRUCTURE_CHAP_TYPE_CHAP;
} else if (AuthConfig->CHAPType == ISCSI_CHAP_MUTUAL) {
Target->CHAPType = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_TARGET_STRUCTURE_CHAP_TYPE_MUTUAL_CHAP;
}
} else if (Attempt->AuthenticationType == ISCSI_AUTH_TYPE_NONE) {
Target->CHAPType = EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_TARGET_STRUCTURE_CHAP_TYPE_NO_CHAP;
}
Target->NicIndex = (UINT8) Index;
if (NvData->IpMode == IP_MODE_IP4 || NvData->IpMode == IP_MODE_AUTOCONFIG) {
IScsiMapV4ToV6Addr (&NvData->TargetIp.v4, &Target->Ip);
} else if (NvData->IpMode == IP_MODE_IP6 || NvData->IpMode == IP_MODE_AUTOCONFIG) {
CopyMem (&Target->Ip, &NvData->TargetIp, sizeof (EFI_IPv6_ADDRESS));
} else {
ASSERT (FALSE);
}
CopyMem (Target->BootLun, NvData->BootLun, sizeof (Target->BootLun));
//
// Target iSCSI Name, CHAP name/secret, reverse CHAP name/secret.
//
Length = (UINT16) AsciiStrLen (NvData->TargetName);
IScsiAddHeapItem (Heap, NvData->TargetName, Length);
Target->IScsiNameLength = Length;
Target->IScsiNameOffset = (UINT16) ((UINTN) *Heap - (UINTN) Table);
if (Attempt->AuthenticationType == ISCSI_AUTH_TYPE_CHAP) {
//
// CHAP Name
//
Length = (UINT16) AsciiStrLen (AuthConfig->CHAPName);
IScsiAddHeapItem (Heap, AuthConfig->CHAPName, Length);
Target->CHAPNameLength = Length;
Target->CHAPNameOffset = (UINT16) ((UINTN) *Heap - (UINTN) Table);
//
// CHAP Secret
//
Length = (UINT16) AsciiStrLen (AuthConfig->CHAPSecret);
IScsiAddHeapItem (Heap, AuthConfig->CHAPSecret, Length);
Target->CHAPSecretLength = Length;
Target->CHAPSecretOffset = (UINT16) ((UINTN) *Heap - (UINTN) Table);
if (Target->CHAPType == EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_TARGET_STRUCTURE_CHAP_TYPE_MUTUAL_CHAP) {
//
// Reverse CHAP Name.
//
Length = (UINT16) AsciiStrLen (AuthConfig->ReverseCHAPName);
IScsiAddHeapItem (Heap, AuthConfig->ReverseCHAPName, Length);
Target->ReverseCHAPNameLength = Length;
Target->ReverseCHAPNameOffset = (UINT16) ((UINTN) *Heap - (UINTN) Table);
//
// Reverse CHAP Secret.
//
Length = (UINT16) AsciiStrLen (AuthConfig->ReverseCHAPSecret);
IScsiAddHeapItem (Heap, AuthConfig->ReverseCHAPSecret, Length);
Target->ReverseCHAPSecretLength = Length;
Target->ReverseCHAPSecretOffset = (UINT16) ((UINTN) *Heap - (UINTN) Table);
}
}
*SectionOffset = (UINT16) ((UINTN) Target - (UINTN) Table);
SectionOffset++;
//
// Advance to the next NIC/Target pair.
//
Nic = (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_NIC_STRUCTURE *) ((UINTN) Target +
IBFT_ROUNDUP (sizeof (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_TARGET_STRUCTURE)));
Target = (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_TARGET_STRUCTURE *) ((UINTN) Nic +
IBFT_ROUNDUP (sizeof (EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_NIC_STRUCTURE)));
Index++;
}
}
/**
Publish and remove the iSCSI Boot Firmware Table according to the iSCSI
session status.
**/
VOID
IScsiPublishIbft (
IN VOID
)
{
EFI_STATUS Status;
EFI_ACPI_TABLE_PROTOCOL *AcpiTableProtocol;
EFI_ACPI_ISCSI_BOOT_FIRMWARE_TABLE_HEADER *Table;
EFI_ACPI_3_0_ROOT_SYSTEM_DESCRIPTION_POINTER *Rsdp;
EFI_ACPI_DESCRIPTION_HEADER *Rsdt;
EFI_ACPI_DESCRIPTION_HEADER *Xsdt;
UINT8 *Heap;
UINT8 Checksum;
Rsdt = NULL;
Xsdt = NULL;
Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID **) &AcpiTableProtocol);
if (EFI_ERROR (Status)) {
return ;
}
//
// Find ACPI table RSD_PTR from the system table.
//
Status = EfiGetSystemConfigurationTable (&gEfiAcpiTableGuid, (VOID **) &Rsdp);
if (EFI_ERROR (Status)) {
Status = EfiGetSystemConfigurationTable (&gEfiAcpi10TableGuid, (VOID **) &Rsdp);
}
if (EFI_ERROR (Status) || (Rsdp == NULL)) {
return ;
} else if (Rsdp->Revision >= EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER_REVISION && Rsdp->XsdtAddress != 0) {
Xsdt = (EFI_ACPI_DESCRIPTION_HEADER *) (UINTN) Rsdp->XsdtAddress;
} else if (Rsdp->RsdtAddress != 0) {
Rsdt = (EFI_ACPI_DESCRIPTION_HEADER *) (UINTN) Rsdp->RsdtAddress;
}
if ((Xsdt == NULL) && (Rsdt == NULL)) {
return ;
}
if (mIbftInstalled) {
Status = AcpiTableProtocol->UninstallAcpiTable (
AcpiTableProtocol,
mTableKey
);
if (EFI_ERROR (Status)) {
return ;
}
mIbftInstalled = FALSE;
}
//
// If there is no valid attempt configuration, just return.
//
if ((!mPrivate->EnableMpio && mPrivate->ValidSinglePathCount == 0) ||
(mPrivate->EnableMpio && mPrivate->MpioCount <= mPrivate->Krb5MpioCount)) {
return ;
}
//
// Allocate 4k bytes to hold the ACPI table.
//
Table = AllocateZeroPool (IBFT_MAX_SIZE);
if (Table == NULL) {
return ;
}
Heap = (UINT8 *) Table + IBFT_HEAP_OFFSET;
//
// Fill in the various section of the iSCSI Boot Firmware Table.
//
if (Rsdp->Revision >= EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER_REVISION) {
IScsiInitIbfTableHeader (Table, Xsdt->OemId, &Xsdt->OemTableId);
} else {
IScsiInitIbfTableHeader (Table, Rsdt->OemId, &Rsdt->OemTableId);
}
IScsiInitControlSection (Table);
IScsiFillInitiatorSection (Table, &Heap);
IScsiFillNICAndTargetSections (Table, &Heap);
Checksum = CalculateCheckSum8((UINT8 *)Table, Table->Length);
Table->Checksum = Checksum;
//
// Install or update the iBFT table.
//
Status = AcpiTableProtocol->InstallAcpiTable (
AcpiTableProtocol,
Table,
Table->Length,
&mTableKey
);
if (EFI_ERROR(Status)) {
return;
}
mIbftInstalled = TRUE;
FreePool (Table);
}
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