/** @file
  This EFI_PXE_BASE_CODE_PROTOCOL and EFI_LOAD_FILE_PROTOCOL.
  interfaces declaration.

  Copyright (c) 2007 - 2019, Intel Corporation. All rights reserved.<BR>

  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef __EFI_PXEBC_IMPL_H__
#define __EFI_PXEBC_IMPL_H__

#include <Uefi.h>

#include <Guid/SmBios.h>
#include <IndustryStandard/SmBios.h>
#include <IndustryStandard/Dhcp.h>
#include <Protocol/NetworkInterfaceIdentifier.h>
#include <Protocol/Arp.h>
#include <Protocol/Ip4.h>
#include <Protocol/Ip4Config2.h>
#include <Protocol/Ip6.h>
#include <Protocol/Ip6Config.h>
#include <Protocol/Udp4.h>
#include <Protocol/Udp6.h>
#include <Protocol/Dhcp4.h>
#include <Protocol/Dhcp6.h>
#include <Protocol/Dns6.h>
#include <Protocol/Mtftp4.h>
#include <Protocol/Mtftp6.h>
#include <Protocol/PxeBaseCode.h>
#include <Protocol/LoadFile.h>
#include <Protocol/PxeBaseCodeCallBack.h>
#include <Protocol/ServiceBinding.h>
#include <Protocol/DriverBinding.h>
#include <Protocol/AdapterInformation.h>

#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/BaseLib.h>
#include <Library/NetLib.h>
#include <Library/DpcLib.h>
#include <Library/DevicePathLib.h>
#include <Library/PcdLib.h>

typedef struct _PXEBC_PRIVATE_DATA  PXEBC_PRIVATE_DATA;
typedef struct _PXEBC_PRIVATE_PROTOCOL PXEBC_PRIVATE_PROTOCOL;
typedef struct _PXEBC_VIRTUAL_NIC   PXEBC_VIRTUAL_NIC;

#include "PxeBcDriver.h"
#include "PxeBcDhcp4.h"
#include "PxeBcDhcp6.h"
#include "PxeBcMtftp.h"
#include "PxeBcBoot.h"
#include "PxeBcSupport.h"

#define PXEBC_DEFAULT_HOPLIMIT        64
#define PXEBC_DEFAULT_LIFETIME        50000    // 50 ms, unit is microsecond
#define PXEBC_UDP_TIMEOUT             30000000 // 3 seconds, unit is 100nanosecond
#define PXEBC_DAD_ADDITIONAL_DELAY    30000000 // 3 seconds
#define PXEBC_MTFTP_TIMEOUT           4
#define PXEBC_MTFTP_RETRIES           6
#define PXEBC_DHCP_RETRIES            4        // refers to mPxeDhcpTimeout, also by PXE2.1 spec.
#define PXEBC_MENU_MAX_NUM            24
#define PXEBC_OFFER_MAX_NUM           16

#define PXEBC_CHECK_MEDIA_WAITING_TIME        EFI_TIMER_PERIOD_SECONDS(20)

#define PXEBC_PRIVATE_DATA_SIGNATURE          SIGNATURE_32 ('P', 'X', 'E', 'P')
#define PXEBC_VIRTUAL_NIC_SIGNATURE           SIGNATURE_32 ('P', 'X', 'E', 'V')
#define PXEBC_PRIVATE_DATA_FROM_PXEBC(a)      CR (a, PXEBC_PRIVATE_DATA, PxeBc, PXEBC_PRIVATE_DATA_SIGNATURE)
#define PXEBC_PRIVATE_DATA_FROM_ID(a)         CR (a, PXEBC_PRIVATE_DATA, Id, PXEBC_PRIVATE_DATA_SIGNATURE)
#define PXEBC_VIRTUAL_NIC_FROM_LOADFILE(a)    CR (a, PXEBC_VIRTUAL_NIC, LoadFile, PXEBC_VIRTUAL_NIC_SIGNATURE)

#define PXE_ENABLED                           0x01
#define PXE_DISABLED                          0x00

typedef union {
  PXEBC_DHCP4_PACKET_CACHE            Dhcp4;
  PXEBC_DHCP6_PACKET_CACHE            Dhcp6;
} PXEBC_DHCP_PACKET_CACHE;

struct _PXEBC_PRIVATE_PROTOCOL {
  UINT64                                    Reserved;
};

struct _PXEBC_VIRTUAL_NIC {
  UINT32                                    Signature;
  EFI_HANDLE                                Controller;
  EFI_LOAD_FILE_PROTOCOL                    LoadFile;
  EFI_DEVICE_PATH_PROTOCOL                  *DevicePath;
  PXEBC_PRIVATE_DATA                        *Private;
};

struct _PXEBC_PRIVATE_DATA {
  UINT32                                    Signature;
  EFI_HANDLE                                Controller;
  EFI_HANDLE                                Image;

  PXEBC_PRIVATE_PROTOCOL                    Id;
  EFI_SIMPLE_NETWORK_PROTOCOL               *Snp;

  PXEBC_VIRTUAL_NIC                         *Ip4Nic;
  PXEBC_VIRTUAL_NIC                         *Ip6Nic;

  EFI_HANDLE                                ArpChild;
  EFI_HANDLE                                Ip4Child;
  EFI_HANDLE                                Dhcp4Child;
  EFI_HANDLE                                Mtftp4Child;
  EFI_HANDLE                                Udp4ReadChild;
  EFI_HANDLE                                Udp4WriteChild;

  EFI_ARP_PROTOCOL                          *Arp;
  EFI_IP4_PROTOCOL                          *Ip4;
  EFI_IP4_CONFIG2_PROTOCOL                  *Ip4Config2;
  EFI_DHCP4_PROTOCOL                        *Dhcp4;
  EFI_MTFTP4_PROTOCOL                       *Mtftp4;
  EFI_UDP4_PROTOCOL                         *Udp4Read;
  EFI_UDP4_PROTOCOL                         *Udp4Write;

  EFI_HANDLE                                Ip6Child;
  EFI_HANDLE                                Dhcp6Child;
  EFI_HANDLE                                Mtftp6Child;
  EFI_HANDLE                                Udp6ReadChild;
  EFI_HANDLE                                Udp6WriteChild;

  EFI_IP6_PROTOCOL                          *Ip6;
  EFI_IP6_CONFIG_PROTOCOL                   *Ip6Cfg;
  EFI_DHCP6_PROTOCOL                        *Dhcp6;
  EFI_MTFTP6_PROTOCOL                       *Mtftp6;
  EFI_UDP6_PROTOCOL                         *Udp6Read;
  EFI_UDP6_PROTOCOL                         *Udp6Write;
  EFI_DNS6_PROTOCOL                         *Dns6;

  EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL *Nii;
  EFI_PXE_BASE_CODE_PROTOCOL                PxeBc;
  EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL       LoadFileCallback;
  EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL       *PxeBcCallback;
  EFI_DEVICE_PATH_PROTOCOL                  *DevicePath;

  EFI_PXE_BASE_CODE_MODE                    Mode;
  EFI_PXE_BASE_CODE_FUNCTION                Function;
  UINT32                                    Ip6Policy;
  UINT32                                    SolicitTimes;
  UINT64                                    ElapsedTime;

  EFI_UDP4_CONFIG_DATA                      Udp4CfgData;
  EFI_UDP6_CONFIG_DATA                      Udp6CfgData;
  EFI_IP4_CONFIG_DATA                       Ip4CfgData;
  EFI_IP6_CONFIG_DATA                       Ip6CfgData;

  EFI_EVENT                                 UdpTimeOutEvent;
  EFI_EVENT                                 ArpUpdateEvent;
  EFI_IP4_COMPLETION_TOKEN                  IcmpToken;
  EFI_IP6_COMPLETION_TOKEN                  Icmp6Token;

  BOOLEAN                                   IsAddressOk;
  BOOLEAN                                   IsOfferSorted;
  BOOLEAN                                   IsProxyRecved;
  BOOLEAN                                   IsDoDiscover;

  EFI_IP_ADDRESS                            TmpStationIp;
  EFI_IP_ADDRESS                            StationIp;
  EFI_IP_ADDRESS                            SubnetMask;
  EFI_IP_ADDRESS                            GatewayIp;
  EFI_IP_ADDRESS                            ServerIp;
  EFI_IPv6_ADDRESS                          *DnsServer;
  UINT16                                    CurSrcPort;
  UINT32                                    IaId;

  UINT32                                    Ip4MaxPacketSize;
  UINT32                                    Ip6MaxPacketSize;
  UINT8                                     *BootFileName;
  UINTN                                     BootFileSize;
  UINTN                                     BlockSize;

  PXEBC_DHCP_PACKET_CACHE                   ProxyOffer;
  PXEBC_DHCP_PACKET_CACHE                   DhcpAck;
  PXEBC_DHCP_PACKET_CACHE                   PxeReply;
  EFI_DHCP6_PACKET                          *Dhcp6Request;
  EFI_DHCP4_PACKET                          SeedPacket;

  //
  // OfferIndex records the index of DhcpOffer[] buffer, and OfferCount records the num of each type of offer.
  //
  // It supposed that
  //
  //   OfferNum:    8
  //   OfferBuffer: [ProxyBinl, ProxyBinl, DhcpOnly, ProxyPxe10, DhcpOnly, DhcpPxe10, DhcpBinl, ProxyBinl]
  //   (OfferBuffer is 0-based.)
  //
  // And assume that (DhcpPxe10 is the first priority actually.)
  //
  //   SelectIndex:     2
  //   SelectProxyType: PXEBC_OFFER_TYPE_PROXY_BINL
  //   (SelectIndex is 1-based, and 0 means no one is selected.)
  //
  // So it should be
  //
  //                 DhcpOnly  DhcpPxe10  DhcpWfm11a  DhcpBinl  ProxyPxe10  ProxyWfm11a  ProxyBinl  Bootp
  //   OfferCount:  [    2(n),      1(n),       0(n),     1(n),       1(1),        0(1),      3(n),  1(1)]
  //
  //   OfferIndex: {[       2,         5,          0,        6,          3,           0,        *0,     0]
  //                [       4,         0,          0,        0,          0,           0,         1,     0]
  //                [       0,         0,          0,        0,          0,           0,         7,     0]
  //                ...                                                                                  ]}
  //   (OfferIndex is 0-based.)
  //
  //
  UINT32                                    SelectIndex;
  UINT32                                    SelectProxyType;
  PXEBC_DHCP_PACKET_CACHE                   OfferBuffer[PXEBC_OFFER_MAX_NUM];
  UINT32                                    OfferNum;
  UINT32                                    OfferCount[PxeOfferTypeMax];
  UINT32                                    OfferIndex[PxeOfferTypeMax][PXEBC_OFFER_MAX_NUM];
};

extern EFI_PXE_BASE_CODE_PROTOCOL           gPxeBcProtocolTemplate;
extern EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL  gPxeBcCallBackTemplate;
extern EFI_LOAD_FILE_PROTOCOL               gLoadFileProtocolTemplate;

#endif