/** @file
  The shared head file for iSCSI driver.

Copyright (c) 2004 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#ifndef _ISCSI_IMPL_H_
#define _ISCSI_IMPL_H_

#include <Uefi.h>

#include <Protocol/ComponentName.h>
#include <Protocol/ComponentName2.h>
#include <Protocol/DriverBinding.h>
#include <Protocol/DevicePath.h>
#include <Protocol/HiiConfigAccess.h>

#include <Protocol/Dhcp4.h>
#include <Protocol/Dhcp6.h>
#include <Protocol/Tcp4.h>
#include <Protocol/Tcp6.h>

#include <Protocol/AuthenticationInfo.h>
#include <Protocol/IScsiInitiatorName.h>
#include <Protocol/ScsiPassThruExt.h>

#include <Library/HiiLib.h>
#include <Library/UefiHiiServicesLib.h>
#include <Library/DevicePathLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/PrintLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/DpcLib.h>
#include <Library/NetLib.h>
#include <Library/TcpIoLib.h>
#include <Library/BaseCryptLib.h>

#include <Guid/MdeModuleHii.h>
#include <Guid/EventGroup.h>
#include <Guid/Acpi.h>

#include "IScsiConfigNVDataStruc.h"
#include "IScsiDriver.h"
#include "IScsiProto.h"
#include "IScsiCHAP.h"
#include "IScsiDhcp.h"
#include "IScsiDhcp6.h"
#include "IScsiIbft.h"
#include "IScsiMisc.h"
#include "IScsiConfig.h"

#define ISCSI_AUTH_INITIAL        0

#define ISCSI_SESSION_SIGNATURE   SIGNATURE_32 ('I', 'S', 'S', 'N')
///
/// 10 seconds
///
#define ISCSI_GET_MAPPING_TIMEOUT 100000000U
///
/// 3 seconds
///
#define ISCSI_WAIT_IPSEC_TIMEOUT  30000000U

struct _ISCSI_SESSION {
  UINT32                      Signature;

  ISCSI_DRIVER_DATA           *Private;
  ISCSI_ATTEMPT_CONFIG_NVDATA *ConfigData;

  UINT8                       AuthType;
  union {
    ISCSI_CHAP_AUTH_DATA      CHAP;
  } AuthData;

  UINT8                       State;

  UINT8                       Isid[6];
  UINT16                      Tsih;

  UINT32                      CmdSN;
  UINT32                      ExpCmdSN;
  UINT32                      MaxCmdSN;

  UINT32                      InitiatorTaskTag;
  UINT16                      NextCid;

  LIST_ENTRY                  Conns;
  UINT32                      NumConns;

  LIST_ENTRY                  TcbList;

  //
  // Session-wide parameters
  //
  UINT16                      TargetPortalGroupTag;
  UINT32                      MaxConnections;
  BOOLEAN                     InitialR2T;
  BOOLEAN                     ImmediateData;
  UINT32                      MaxBurstLength;
  UINT32                      FirstBurstLength;
  UINT32                      DefaultTime2Wait;
  UINT32                      DefaultTime2Retain;
  UINT16                      MaxOutstandingR2T;
  BOOLEAN                     DataPDUInOrder;
  BOOLEAN                     DataSequenceInOrder;
  UINT8                       ErrorRecoveryLevel;
};

#define ISCSI_CONNECTION_SIGNATURE  SIGNATURE_32 ('I', 'S', 'C', 'N')

struct _ISCSI_CONNECTION {
  UINT32            Signature;
  LIST_ENTRY        Link;

  EFI_EVENT         TimeoutEvent;

  ISCSI_SESSION     *Session;

  UINT8             State;
  UINT8             CurrentStage;
  UINT8             NextStage;

  UINT8             AuthStep;

  BOOLEAN           PartialReqSent;
  BOOLEAN           PartialRspRcvd;

  BOOLEAN           TransitInitiated;
  BOOLEAN           ParamNegotiated;

  UINT16            Cid;
  UINT32            ExpStatSN;

  //
  // Queues...
  //
  NET_BUF_QUEUE     RspQue;

  BOOLEAN           Ipv6Flag;
  TCP_IO            TcpIo;

  //
  // Connection-only parameters.
  //
  UINT32            MaxRecvDataSegmentLength;
  ISCSI_DIGEST_TYPE HeaderDigest;
  ISCSI_DIGEST_TYPE DataDigest;
};

#define ISCSI_DRIVER_DATA_SIGNATURE SIGNATURE_32 ('I', 'S', 'D', 'A')

#define ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU(PassThru) \
  CR ( \
  PassThru, \
  ISCSI_DRIVER_DATA, \
  IScsiExtScsiPassThru, \
  ISCSI_DRIVER_DATA_SIGNATURE \
  )

#define ISCSI_DRIVER_DATA_FROM_IDENTIFIER(Identifier) \
  CR ( \
  Identifier, \
  ISCSI_DRIVER_DATA, \
  IScsiIdentifier, \
  ISCSI_DRIVER_DATA_SIGNATURE \
  )

struct _ISCSI_DRIVER_DATA {
  UINT32                          Signature;
  EFI_HANDLE                      Image;
  EFI_HANDLE                      Controller;
  ISCSI_PRIVATE_PROTOCOL          IScsiIdentifier;

  EFI_EVENT                       ExitBootServiceEvent;

  EFI_EXT_SCSI_PASS_THRU_PROTOCOL IScsiExtScsiPassThru;
  EFI_EXT_SCSI_PASS_THRU_MODE     ExtScsiPassThruMode;
  EFI_HANDLE                      ExtScsiPassThruHandle;
  EFI_DEVICE_PATH_PROTOCOL        *DevicePath;
  EFI_HANDLE                      ChildHandle;  
  ISCSI_SESSION                   *Session;
};

#endif
