summaryrefslogtreecommitdiffstats
path: root/MdePkg/Include/Protocol/Mtftp4.h
blob: d1ca02d9c9913b25bbfdab226660ab4452cfb02f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
/** @file
  EFI Multicast Trivial File Transfer Protocol Definition

Copyright (c) 2006 - 2018, 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 that 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.

  @par Revision Reference:
  This Protocol is introduced in UEFI Specification 2.0

**/

#ifndef __EFI_MTFTP4_PROTOCOL_H__
#define __EFI_MTFTP4_PROTOCOL_H__

#define EFI_MTFTP4_SERVICE_BINDING_PROTOCOL_GUID \
  { \
    0x2FE800BE, 0x8F01, 0x4aa6, {0x94, 0x6B, 0xD7, 0x13, 0x88, 0xE1, 0x83, 0x3F } \
  }

#define EFI_MTFTP4_PROTOCOL_GUID \
  { \
    0x78247c57, 0x63db, 0x4708, {0x99, 0xc2, 0xa8, 0xb4, 0xa9, 0xa6, 0x1f, 0x6b } \
  }

typedef struct _EFI_MTFTP4_PROTOCOL EFI_MTFTP4_PROTOCOL;
typedef struct _EFI_MTFTP4_TOKEN EFI_MTFTP4_TOKEN;

//
//MTFTP4 packet opcode definition
//
#define EFI_MTFTP4_OPCODE_RRQ                     1
#define EFI_MTFTP4_OPCODE_WRQ                     2
#define EFI_MTFTP4_OPCODE_DATA                    3
#define EFI_MTFTP4_OPCODE_ACK                     4
#define EFI_MTFTP4_OPCODE_ERROR                   5
#define EFI_MTFTP4_OPCODE_OACK                    6
#define EFI_MTFTP4_OPCODE_DIR                     7
#define EFI_MTFTP4_OPCODE_DATA8                   8
#define EFI_MTFTP4_OPCODE_ACK8                    9

//
// MTFTP4 error code definition
//
#define EFI_MTFTP4_ERRORCODE_NOT_DEFINED          0
#define EFI_MTFTP4_ERRORCODE_FILE_NOT_FOUND       1
#define EFI_MTFTP4_ERRORCODE_ACCESS_VIOLATION     2
#define EFI_MTFTP4_ERRORCODE_DISK_FULL            3
#define EFI_MTFTP4_ERRORCODE_ILLEGAL_OPERATION    4
#define EFI_MTFTP4_ERRORCODE_UNKNOWN_TRANSFER_ID  5
#define EFI_MTFTP4_ERRORCODE_FILE_ALREADY_EXISTS  6
#define EFI_MTFTP4_ERRORCODE_NO_SUCH_USER         7
#define EFI_MTFTP4_ERRORCODE_REQUEST_DENIED       8

//
// MTFTP4 pacekt definitions
//
#pragma pack(1)

typedef struct {
  UINT16                  OpCode;
  UINT8                   Filename[1];
} EFI_MTFTP4_REQ_HEADER;

typedef struct {
  UINT16                  OpCode;
  UINT8                   Data[1];
} EFI_MTFTP4_OACK_HEADER;

typedef struct {
  UINT16                  OpCode;
  UINT16                  Block;
  UINT8                   Data[1];
} EFI_MTFTP4_DATA_HEADER;

typedef struct {
  UINT16                  OpCode;
  UINT16                  Block[1];
} EFI_MTFTP4_ACK_HEADER;

typedef struct {
  UINT16                  OpCode;
  UINT64                  Block;
  UINT8                   Data[1];
} EFI_MTFTP4_DATA8_HEADER;

typedef struct {
  UINT16                  OpCode;
  UINT64                  Block[1];
} EFI_MTFTP4_ACK8_HEADER;

typedef struct {
  UINT16                  OpCode;
  UINT16                  ErrorCode;
  UINT8                   ErrorMessage[1];
} EFI_MTFTP4_ERROR_HEADER;

typedef union {
  ///
  /// Type of packets as defined by the MTFTPv4 packet opcodes.
  ///
  UINT16                  OpCode;
  ///
  /// Read request packet header.
  ///
  EFI_MTFTP4_REQ_HEADER   Rrq;
  ///
  /// Write request packet header.
  ///
  EFI_MTFTP4_REQ_HEADER   Wrq;
  ///
  /// Option acknowledge packet header.
  ///
  EFI_MTFTP4_OACK_HEADER  Oack;
  ///
  /// Data packet header.
  ///
  EFI_MTFTP4_DATA_HEADER  Data;
  ///
  /// Acknowledgement packet header.
  ///
  EFI_MTFTP4_ACK_HEADER   Ack;
  ///
  /// Data packet header with big block number.
  ///
  EFI_MTFTP4_DATA8_HEADER Data8;
  ///
  /// Acknowledgement header with big block num.
  ///
  EFI_MTFTP4_ACK8_HEADER  Ack8;
  ///
  /// Error packet header.
  ///
  EFI_MTFTP4_ERROR_HEADER Error;
} EFI_MTFTP4_PACKET;

#pragma pack()

///
/// MTFTP4 option definition.
///
typedef struct {
  UINT8                   *OptionStr;
  UINT8                   *ValueStr;
} EFI_MTFTP4_OPTION;


typedef struct {
  BOOLEAN                 UseDefaultSetting;
  EFI_IPv4_ADDRESS        StationIp;
  EFI_IPv4_ADDRESS        SubnetMask;
  UINT16                  LocalPort;
  EFI_IPv4_ADDRESS        GatewayIp;
  EFI_IPv4_ADDRESS        ServerIp;
  UINT16                  InitialServerPort;
  UINT16                  TryCount;
  UINT16                  TimeoutValue;
} EFI_MTFTP4_CONFIG_DATA;


typedef struct {
  EFI_MTFTP4_CONFIG_DATA  ConfigData;
  UINT8                   SupportedOptionCount;
  UINT8                   **SupportedOptoins;
  UINT8                   UnsupportedOptionCount;
  UINT8                   **UnsupportedOptoins;
} EFI_MTFTP4_MODE_DATA;


typedef struct {
  EFI_IPv4_ADDRESS        GatewayIp;
  EFI_IPv4_ADDRESS        ServerIp;
  UINT16                  ServerPort;
  UINT16                  TryCount;
  UINT16                  TimeoutValue;
} EFI_MTFTP4_OVERRIDE_DATA;

//
// Protocol interfaces definition
//

/**
  A callback function that is provided by the caller to intercept
  the EFI_MTFTP4_OPCODE_DATA or EFI_MTFTP4_OPCODE_DATA8 packets processed in the
  EFI_MTFTP4_PROTOCOL.ReadFile() function, and alternatively to intercept
  EFI_MTFTP4_OPCODE_OACK or EFI_MTFTP4_OPCODE_ERROR packets during a call to
  EFI_MTFTP4_PROTOCOL.ReadFile(), WriteFile() or ReadDirectory().

  @param  This        The pointer to the EFI_MTFTP4_PROTOCOL instance.
  @param  Token       The token that the caller provided in the
                      EFI_MTFTP4_PROTOCOL.ReadFile(), WriteFile()
                      or ReadDirectory() function.
  @param  PacketLen   Indicates the length of the packet.
  @param  Packet      The pointer to an MTFTPv4 packet.

  @retval EFI_SUCCESS The operation was successful.
  @retval Others      Aborts the transfer process.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MTFTP4_CHECK_PACKET)(
  IN EFI_MTFTP4_PROTOCOL  *This,
  IN EFI_MTFTP4_TOKEN     *Token,
  IN UINT16               PacketLen,
  IN EFI_MTFTP4_PACKET    *Paket
  );

/**
  Timeout callback function.

  @param  This           The pointer to the EFI_MTFTP4_PROTOCOL instance.
  @param  Token          The token that is provided in the
                         EFI_MTFTP4_PROTOCOL.ReadFile() or
                         EFI_MTFTP4_PROTOCOL.WriteFile() or
                         EFI_MTFTP4_PROTOCOL.ReadDirectory() functions
                         by the caller.

  @retval EFI_SUCCESS   The operation was successful.
  @retval Others        Aborts download process.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MTFTP4_TIMEOUT_CALLBACK)(
  IN EFI_MTFTP4_PROTOCOL  *This,
  IN EFI_MTFTP4_TOKEN     *Token
  );

/**
  A callback function that the caller provides to feed data to the
  EFI_MTFTP4_PROTOCOL.WriteFile() function.

  @param  This   The pointer to the EFI_MTFTP4_PROTOCOL instance.
  @param  Token  The token provided in the
                 EFI_MTFTP4_PROTOCOL.WriteFile() by the caller.
  @param  Length Indicates the length of the raw data wanted on input, and the
                 length the data available on output.
  @param  Buffer The pointer to the buffer where the data is stored.

  @retval EFI_SUCCESS The operation was successful.
  @retval Others      Aborts session.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MTFTP4_PACKET_NEEDED)(
  IN  EFI_MTFTP4_PROTOCOL *This,
  IN  EFI_MTFTP4_TOKEN    *Token,
  IN  OUT UINT16          *Length,
  OUT VOID                **Buffer
  );


/**
  Submits an asynchronous interrupt transfer to an interrupt endpoint of a USB device.

  @param  This     The pointer to the EFI_MTFTP4_PROTOCOL instance.
  @param  ModeData The pointer to storage for the EFI MTFTPv4 Protocol driver mode data.

  @retval EFI_SUCCESS           The configuration data was successfully returned.
  @retval EFI_OUT_OF_RESOURCES  The required mode data could not be allocated.
  @retval EFI_INVALID_PARAMETER This is NULL or ModeData is NULL.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MTFTP4_GET_MODE_DATA)(
  IN  EFI_MTFTP4_PROTOCOL     *This,
  OUT EFI_MTFTP4_MODE_DATA    *ModeData
  );


/**
  Initializes, changes, or resets the default operational setting for this
  EFI MTFTPv4 Protocol driver instance.

  @param  This            The pointer to the EFI_MTFTP4_PROTOCOL instance.
  @param  MtftpConfigData The pointer to the configuration data structure.

  @retval EFI_SUCCESS           The EFI MTFTPv4 Protocol driver was configured successfully.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
  @retval EFI_ACCESS_DENIED     The EFI configuration could not be changed at this time because
                                there is one MTFTP background operation in progress.
  @retval EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,
                                RARP, etc.) has not finished yet.
  @retval EFI_UNSUPPORTED       A configuration protocol (DHCP, BOOTP, RARP, etc.) could not
                                be located when clients choose to use the default address
                                settings.
  @retval EFI_OUT_OF_RESOURCES  The EFI MTFTPv4 Protocol driver instance data could not be
                                allocated.
  @retval EFI_DEVICE_ERROR      An unexpected system or network error occurred. The EFI
                                 MTFTPv4 Protocol driver instance is not configured.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MTFTP4_CONFIGURE)(
  IN EFI_MTFTP4_PROTOCOL       *This,
  IN EFI_MTFTP4_CONFIG_DATA    *MtftpConfigData OPTIONAL
  );


/**
  Gets information about a file from an MTFTPv4 server.

  @param  This         The pointer to the EFI_MTFTP4_PROTOCOL instance.
  @param  OverrideData Data that is used to override the existing parameters. If NULL,
                       the default parameters that were set in the
                       EFI_MTFTP4_PROTOCOL.Configure() function are used.
  @param  Filename     The pointer to null-terminated ASCII file name string.
  @param  ModeStr      The pointer to null-terminated ASCII mode string. If NULL, "octet" will be used.
  @param  OptionCount  Number of option/value string pairs in OptionList.
  @param  OptionList   The pointer to array of option/value string pairs. Ignored if
                       OptionCount is zero.
  @param  PacketLength The number of bytes in the returned packet.
  @param  Packet       The pointer to the received packet. This buffer must be freed by
                       the caller.

  @retval EFI_SUCCESS              An MTFTPv4 OACK packet was received and is in the Packet.
  @retval EFI_INVALID_PARAMETER    One or more of the following conditions is TRUE:
                                   - This is NULL.
                                   - Filename is NULL.
                                   - OptionCount is not zero and OptionList is NULL.
                                   - One or more options in OptionList have wrong format.
                                   - PacketLength is NULL.
                                   - One or more IPv4 addresses in OverrideData are not valid
                                     unicast IPv4 addresses if OverrideData is not NULL.
  @retval EFI_UNSUPPORTED          One or more options in the OptionList are in the
                                   unsupported list of structure EFI_MTFTP4_MODE_DATA.
  @retval EFI_NOT_STARTED          The EFI MTFTPv4 Protocol driver has not been started.
  @retval EFI_NO_MAPPING           When using a default address, configuration (DHCP, BOOTP,
                                   RARP, etc.) has not finished yet.
  @retval EFI_ACCESS_DENIED        The previous operation has not completed yet.
  @retval EFI_OUT_OF_RESOURCES     Required system resources could not be allocated.
  @retval EFI_TFTP_ERROR           An MTFTPv4 ERROR packet was received and is in the Packet.
  @retval EFI_NETWORK_UNREACHABLE  An ICMP network unreachable error packet was received and the Packet is set to NULL.
  @retval EFI_HOST_UNREACHABLE     An ICMP host unreachable error packet was received and the Packet is set to NULL.
  @retval EFI_PROTOCOL_UNREACHABLE An ICMP protocol unreachable error packet was received and the Packet is set to NULL.
  @retval EFI_PORT_UNREACHABLE     An ICMP port unreachable error packet was received and the Packet is set to NULL.
  @retval EFI_ICMP_ERROR           Some other ICMP ERROR packet was received and is in the Buffer.
  @retval EFI_PROTOCOL_ERROR       An unexpected MTFTPv4 packet was received and is in the Packet.
  @retval EFI_TIMEOUT              No responses were received from the MTFTPv4 server.
  @retval EFI_DEVICE_ERROR         An unexpected network error or system error occurred.
  @retval EFI_NO_MEDIA             There was a media error.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MTFTP4_GET_INFO)(
  IN  EFI_MTFTP4_PROTOCOL      *This,
  IN  EFI_MTFTP4_OVERRIDE_DATA *OverrideData   OPTIONAL,
  IN  UINT8                    *Filename,
  IN  UINT8                    *ModeStr        OPTIONAL,
  IN  UINT8                    OptionCount,
  IN  EFI_MTFTP4_OPTION        *OptionList,
  OUT UINT32                   *PacketLength,
  OUT EFI_MTFTP4_PACKET        **Packet        OPTIONAL
  );

/**
  Parses the options in an MTFTPv4 OACK packet.

  @param  This         The pointer to the EFI_MTFTP4_PROTOCOL instance.
  @param  PacketLen    Length of the OACK packet to be parsed.
  @param  Packet       The pointer to the OACK packet to be parsed.
  @param  OptionCount  The pointer to the number of options in following OptionList.
  @param  OptionList   The pointer to EFI_MTFTP4_OPTION storage. Call the EFI Boot
                       Service FreePool() to release the OptionList if the options
                       in this OptionList are not needed any more.

  @retval EFI_SUCCESS           The OACK packet was valid and the OptionCount and
                                OptionList parameters have been updated.
  @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
                                - PacketLen is 0.
                                - Packet is NULL or Packet is not a valid MTFTPv4 packet.
                                - OptionCount is NULL.
  @retval EFI_NOT_FOUND         No options were found in the OACK packet.
  @retval EFI_OUT_OF_RESOURCES  Storage for the OptionList array cannot be allocated.
  @retval EFI_PROTOCOL_ERROR    One or more of the option fields is invalid.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MTFTP4_PARSE_OPTIONS)(
  IN  EFI_MTFTP4_PROTOCOL      *This,
  IN  UINT32                   PacketLen,
  IN  EFI_MTFTP4_PACKET        *Packet,
  OUT UINT32                   *OptionCount,
  OUT EFI_MTFTP4_OPTION        **OptionList OPTIONAL
  );


/**
  Downloads a file from an MTFTPv4 server.

  @param  This  The pointer to the EFI_MTFTP4_PROTOCOL instance.
  @param  Token The pointer to the token structure to provide the parameters that are
                used in this operation.

  @retval EFI_SUCCESS              The data file has been transferred successfully.
  @retval EFI_OUT_OF_RESOURCES     Required system resources could not be allocated.
  @retval EFI_BUFFER_TOO_SMALL     BufferSize is not zero but not large enough to hold the
                                   downloaded data in downloading process.
  @retval EFI_ABORTED              Current operation is aborted by user.
  @retval EFI_NETWORK_UNREACHABLE  An ICMP network unreachable error packet was received.
  @retval EFI_HOST_UNREACHABLE     An ICMP host unreachable error packet was received.
  @retval EFI_PROTOCOL_UNREACHABLE An ICMP protocol unreachable error packet was received.
  @retval EFI_PORT_UNREACHABLE     An ICMP port unreachable error packet was received.
  @retval EFI_ICMP_ERROR           Some other  ICMP ERROR packet was received.
  @retval EFI_TIMEOUT              No responses were received from the MTFTPv4 server.
  @retval EFI_TFTP_ERROR           An MTFTPv4 ERROR packet was received.
  @retval EFI_DEVICE_ERROR         An unexpected network error or system error occurred.
  @retval EFI_NO_MEDIA             There was a media error.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MTFTP4_READ_FILE)(
  IN EFI_MTFTP4_PROTOCOL       *This,
  IN EFI_MTFTP4_TOKEN          *Token
  );



/**
  Sends a file to an MTFTPv4 server.

  @param  This  The pointer to the EFI_MTFTP4_PROTOCOL instance.
  @param  Token The pointer to the token structure to provide the parameters that are
                used in this operation.

  @retval EFI_SUCCESS           The upload session has started.
  @retval EFI_UNSUPPORTED       The operation is not supported by this implementation.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
  @retval EFI_UNSUPPORTED       One or more options in the Token.OptionList are in
                                the unsupported list of structure EFI_MTFTP4_MODE_DATA.
  @retval EFI_NOT_STARTED       The EFI MTFTPv4 Protocol driver has not been started.
  @retval EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,
                                RARP, etc.) is not finished yet.
  @retval EFI_ALREADY_STARTED   This Token is already being used in another MTFTPv4 session.
  @retval EFI_OUT_OF_RESOURCES  Required system resources could not be allocated.
  @retval EFI_ACCESS_DENIED     The previous operation has not completed yet.
  @retval EFI_DEVICE_ERROR      An unexpected network error or system error occurred.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MTFTP4_WRITE_FILE)(
  IN EFI_MTFTP4_PROTOCOL       *This,
  IN EFI_MTFTP4_TOKEN          *Token
  );


/**
  Downloads a data file "directory" from an MTFTPv4 server. May be unsupported in some EFI
  implementations.

  @param  This  The pointer to the EFI_MTFTP4_PROTOCOL instance.
  @param  Token The pointer to the token structure to provide the parameters that are
                used in this operation.

  @retval EFI_SUCCESS           The MTFTPv4 related file "directory" has been downloaded.
  @retval EFI_UNSUPPORTED       The operation is not supported by this implementation.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
  @retval EFI_UNSUPPORTED       One or more options in the Token.OptionList are in
                                the unsupported list of structure EFI_MTFTP4_MODE_DATA.
  @retval EFI_NOT_STARTED       The EFI MTFTPv4 Protocol driver has not been started.
  @retval EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,
                                RARP, etc.) is not finished yet.
  @retval EFI_ALREADY_STARTED   This Token is already being used in another MTFTPv4 session.
  @retval EFI_OUT_OF_RESOURCES  Required system resources could not be allocated.
  @retval EFI_ACCESS_DENIED     The previous operation has not completed yet.
  @retval EFI_DEVICE_ERROR      An unexpected network error or system error occurred.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MTFTP4_READ_DIRECTORY)(
  IN EFI_MTFTP4_PROTOCOL       *This,
  IN EFI_MTFTP4_TOKEN          *Token
  );

/**
  Polls for incoming data packets and processes outgoing data packets.

  @param  This The pointer to the EFI_MTFTP4_PROTOCOL instance.

  @retval  EFI_SUCCESS           Incoming or outgoing data was processed.
  @retval  EFI_NOT_STARTED       This EFI MTFTPv4 Protocol instance has not been started.
  @retval  EFI_NO_MAPPING        When using a default address, configuration (DHCP, BOOTP,
                                 RARP, etc.) is not finished yet.
  @retval  EFI_INVALID_PARAMETER This is NULL.
  @retval  EFI_DEVICE_ERROR      An unexpected system or network error occurred.
  @retval  EFI_TIMEOUT           Data was dropped out of the transmit and/or receive queue.
                                 Consider increasing the polling rate.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_MTFTP4_POLL)(
  IN EFI_MTFTP4_PROTOCOL       *This
  );

///
/// The EFI_MTFTP4_PROTOCOL is designed to be used by UEFI drivers and applications
/// to transmit and receive data files. The EFI MTFTPv4 Protocol driver uses
/// the underlying EFI UDPv4 Protocol driver and EFI IPv4 Protocol driver.
///
struct _EFI_MTFTP4_PROTOCOL {
  EFI_MTFTP4_GET_MODE_DATA     GetModeData;
  EFI_MTFTP4_CONFIGURE         Configure;
  EFI_MTFTP4_GET_INFO          GetInfo;
  EFI_MTFTP4_PARSE_OPTIONS     ParseOptions;
  EFI_MTFTP4_READ_FILE         ReadFile;
  EFI_MTFTP4_WRITE_FILE        WriteFile;
  EFI_MTFTP4_READ_DIRECTORY    ReadDirectory;
  EFI_MTFTP4_POLL              Poll;
};

struct _EFI_MTFTP4_TOKEN {
  ///
  /// The status that is returned to the caller at the end of the operation
  /// to indicate whether this operation completed successfully.
  ///
  EFI_STATUS                  Status;
  ///
  /// The event that will be signaled when the operation completes. If
  /// set to NULL, the corresponding function will wait until the read or
  /// write operation finishes. The type of Event must be
  /// EVT_NOTIFY_SIGNAL. The Task Priority Level (TPL) of
  /// Event must be lower than or equal to TPL_CALLBACK.
  ///
  EFI_EVENT                   Event;
  ///
  /// If not NULL, the data that will be used to override the existing configure data.
  ///
  EFI_MTFTP4_OVERRIDE_DATA    *OverrideData;
  ///
  /// The pointer to the null-terminated ASCII file name string.
  ///
  UINT8                       *Filename;
  ///
  /// The pointer to the null-terminated ASCII mode string. If NULL, "octet" is used.
  ///
  UINT8                       *ModeStr;
  ///
  /// Number of option/value string pairs.
  ///
  UINT32                      OptionCount;
  ///
  /// The pointer to an array of option/value string pairs. Ignored if OptionCount is zero.
  ///
  EFI_MTFTP4_OPTION           *OptionList;
  ///
  /// The size of the data buffer.
  ///
  UINT64                      BufferSize;
  ///
  /// The pointer to the data buffer. Data that is downloaded from the
  /// MTFTPv4 server is stored here. Data that is uploaded to the
  /// MTFTPv4 server is read from here. Ignored if BufferSize is zero.
  ///
  VOID                        *Buffer;
  ///
  /// The pointer to the context that will be used by CheckPacket,
  /// TimeoutCallback and PacketNeeded.
  ///
  VOID                        *Context;
  ///
  /// The pointer to the callback function to check the contents of the received packet.
  ///
  EFI_MTFTP4_CHECK_PACKET     CheckPacket;
  ///
  /// The pointer to the function to be called when a timeout occurs.
  ///
  EFI_MTFTP4_TIMEOUT_CALLBACK TimeoutCallback;
  ///
  /// The pointer to the function to provide the needed packet contents.
  ///
  EFI_MTFTP4_PACKET_NEEDED    PacketNeeded;
};

extern EFI_GUID gEfiMtftp4ServiceBindingProtocolGuid;
extern EFI_GUID gEfiMtftp4ProtocolGuid;

#endif