MdeModulePke/Mtftp4Dxe: Support windowsize in read request operation.

[mirror_edk2.git] / MdeModulePkg / Universal / Network / Mtftp4Dxe / Mtftp4Option.h

/** @file\r
  Routines to process MTFTP4 options.\r
\r
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php<BR>\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
\r
#ifndef __EFI_MTFTP4_OPTION_H__\r
#define __EFI_MTFTP4_OPTION_H__\r
\r
#define MTFTP4_SUPPORTED_OPTIONS  5\r
#define MTFTP4_OPCODE_LEN         2\r
#define MTFTP4_ERRCODE_LEN        2\r
#define MTFTP4_BLKNO_LEN          2\r
#define MTFTP4_DATA_HEAD_LEN      4\r
\r
#define MTFTP4_BLKSIZE_EXIST      0x01\r
#define MTFTP4_TIMEOUT_EXIST      0x02\r
#define MTFTP4_TSIZE_EXIST        0x04\r
#define MTFTP4_MCAST_EXIST        0x08\r
#define MTFTP4_WINDOWSIZE_EXIST   0x10\r
\r
typedef struct {\r
  UINT16                    BlkSize;\r
  UINT16                    WindowSize;\r
  UINT8                     Timeout;\r
  UINT32                    Tsize;\r
  IP4_ADDR                  McastIp;\r
  UINT16                    McastPort;\r
  BOOLEAN                   Master;\r
  UINT32                    Exist;\r
} MTFTP4_OPTION;\r
\r
/**\r
  Allocate and fill in a array of Mtftp options from the Packet.\r
\r
  It first calls Mtftp4FillOption to get the option number, then allocate\r
  the array, at last, call Mtftp4FillOption again to save the options.\r
\r
  @param  Packet                 The packet to parse\r
  @param  PacketLen              The length of the packet\r
  @param  OptionCount            The number of options in the packet\r
  @param  OptionList             The point to get the option array.\r
\r
  @retval EFI_INVALID_PARAMETER  The parametera are invalid or packet isn't a\r
                                 well-formated OACK packet.\r
  @retval EFI_SUCCESS            The option array is build\r
  @retval EFI_OUT_OF_RESOURCES   Failed to allocate memory for the array\r
\r
**/\r
EFI_STATUS\r
Mtftp4ExtractOptions (\r
  IN     EFI_MTFTP4_PACKET     *Packet,\r
  IN     UINT32                PacketLen,\r
     OUT UINT32                *OptionCount,\r
     OUT EFI_MTFTP4_OPTION     **OptionList        OPTIONAL\r
  );\r
\r
/**\r
  Parse the option in Options array to MTFTP4_OPTION which program\r
  can access directly.\r
\r
  @param  Options                The option array, which contains addresses of each\r
                                 option's name/value string.\r
  @param  Count                  The number of options in the Options\r
  @param  Request                Whether this is a request or OACK. The format of\r
                                 multicast is different according to this setting.\r
  @param  Operation              The current performed operation.\r
  @param  MtftpOption            The MTFTP4_OPTION for easy access.\r
\r
  @retval EFI_INVALID_PARAMETER  The option is mal-formated\r
  @retval EFI_UNSUPPORTED        Some option isn't supported\r
  @retval EFI_SUCCESS            The option are OK and has been parsed.\r
\r
**/\r
EFI_STATUS\r
Mtftp4ParseOption (\r
  IN     EFI_MTFTP4_OPTION     *Options,\r
  IN     UINT32                Count,\r
  IN     BOOLEAN               Request,\r
  IN     UINT16                Operation,\r
     OUT MTFTP4_OPTION         *MtftpOption\r
  );\r
\r
/**\r
  Parse the options in the OACK packet to MTFTP4_OPTION which program\r
  can access directly.\r
\r
  @param  Packet                 The OACK packet to parse\r
  @param  PacketLen              The length of the packet\r
  @param  Operation              The current performed operation.\r
  @param  MtftpOption            The MTFTP_OPTION for easy access.\r
\r
  @retval EFI_INVALID_PARAMETER  The packet option is mal-formated\r
  @retval EFI_UNSUPPORTED        Some option isn't supported\r
  @retval EFI_SUCCESS            The option are OK and has been parsed.\r
\r
**/\r
EFI_STATUS\r
Mtftp4ParseOptionOack (\r
  IN     EFI_MTFTP4_PACKET     *Packet,\r
  IN     UINT32                PacketLen,\r
  IN     UINT16                Operation,\r
     OUT MTFTP4_OPTION         *MtftpOption\r
  );\r
\r
extern CHAR8  *mMtftp4SupportedOptions[MTFTP4_SUPPORTED_OPTIONS];\r
\r
#endif\r