/** @file
  Mtftp6 option parse functions declaration.

  Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>

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

**/

#ifndef __EFI_MTFTP6_OPTION_H__
#define __EFI_MTFTP6_OPTION_H__

#include <Uefi.h>

#include <Protocol/ServiceBinding.h>

#include <Library/NetLib.h>
#include <Library/UdpIoLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>

#define MTFTP6_SUPPORTED_OPTIONS_NUM  5
#define MTFTP6_OPCODE_LEN             2
#define MTFTP6_ERRCODE_LEN            2
#define MTFTP6_BLKNO_LEN              2
#define MTFTP6_DATA_HEAD_LEN          4

//
// The bit map definition for Mtftp6 extension options.
//
#define MTFTP6_OPT_BLKSIZE_BIT        0x01
#define MTFTP6_OPT_TIMEOUT_BIT        0x02
#define MTFTP6_OPT_TSIZE_BIT          0x04
#define MTFTP6_OPT_MCAST_BIT          0x08
#define MTFTP6_OPT_WINDOWSIZE_BIT     0X10

extern CHAR8 *mMtftp6SupportedOptions[MTFTP6_SUPPORTED_OPTIONS_NUM];

typedef struct {
  UINT16                    BlkSize;
  UINT16                    WindowSize;
  UINT8                     Timeout;
  UINT32                    Tsize;
  EFI_IPv6_ADDRESS          McastIp;
  UINT16                    McastPort;
  BOOLEAN                   IsMaster;
  UINT32                    BitMap;
} MTFTP6_EXT_OPTION_INFO;

/**
  Parse the Ascii string of multi-cast option.

  @param[in]  Str           The pointer to the Ascii string of multi-cast option.
  @param[in]  ExtInfo       The pointer to the option information to be filled.

  @retval EFI_SUCCESS            Parse the multicast option successfully.
  @retval EFI_INVALID_PARAMETER  The string is malformatted.

**/
EFI_STATUS
Mtftp6ParseMcastOption (
  IN UINT8                  *Str,
  IN MTFTP6_EXT_OPTION_INFO *ExtInfo
  );


/**
  Parse the MTFTP6 extesion options.

  @param[in]  Options       The pointer to the extension options list.
  @param[in]  Count         The num of the extension options.
  @param[in]  IsRequest     If FALSE, the extension options is included
                            by a request packet.
  @param[in]  Operation     The current performed operation.
  @param[in]  ExtInfo       The pointer to the option information to be filled.

  @retval EFI_SUCCESS            Parse the multicast option successfully.
  @retval EFI_INVALID_PARAMETER  There is one option is malformatted at least.
  @retval EFI_UNSUPPORTED        There is one option is not supported at least.

**/
EFI_STATUS
Mtftp6ParseExtensionOption (
  IN EFI_MTFTP6_OPTION        *Options,
  IN UINT32                   Count,
  IN BOOLEAN                  IsRequest,
  IN UINT16                   Operation,
  IN MTFTP6_EXT_OPTION_INFO   *ExtInfo
  );


/**
  Go through the packet to fill the options array with the start
  addresses of each MTFTP option name/value pair.

  @param[in]      Packet                 The packet to be checked.
  @param[in]      PacketLen              The length of the packet.
  @param[in, out] Count                  The num of the Options on input.
                                         The actual one on output.
  @param[in]      Options                The option array to be filled
                                         it's optional.

  @retval EFI_SUCCESS            The packet has been parsed successfully.
  @retval EFI_INVALID_PARAMETER  The packet is malformatted
  @retval EFI_BUFFER_TOO_SMALL   The Options array is too small
  @retval EFI_PROTOCOL_ERROR     An unexpected MTFTPv6 packet was received.

**/
EFI_STATUS
Mtftp6ParsePacketOption (
  IN     EFI_MTFTP6_PACKET     *Packet,
  IN     UINT32                PacketLen,
  IN OUT UINT32                *Count,
  IN     EFI_MTFTP6_OPTION     *Options          OPTIONAL
  );


/**
  Go through the packet, generate option list array and fill it
  by the result of parse options.

  @param[in]      Packet                 The packet to be checked.
  @param[in]      PacketLen              The length of the packet.
  @param[in, out] OptionCount            The num of the Options on input.
                                         The actual one on output.
  @param[out]     OptionList             The option list array to be generated
                                         and filled. It is optional.

  @retval EFI_SUCCESS            The packet has been parsed successfully.
  @retval EFI_INVALID_PARAMETER  The packet is malformatted.
  @retval EFI_PROTOCOL_ERROR     An option is malformatted.
  @retval EFI_NOT_FOUND          The packet has no options.
  @retval EFI_OUT_OF_RESOURCES   Failed to allocate memory for the array.
  @retval EFI_BUFFER_TOO_SMALL   The size of option list array is too small.

**/
EFI_STATUS
Mtftp6ParseStart (
  IN     EFI_MTFTP6_PACKET      *Packet,
  IN     UINT32                 PacketLen,
  IN OUT UINT32                 *OptionCount,
     OUT EFI_MTFTP6_OPTION      **OptionList          OPTIONAL
  );

#endif
