summaryrefslogtreecommitdiff
path: root/NetworkPkg/TcpDxe/TcpMain.h
blob: 69c764cde18973b99812ebd6bc3ecee61a2dabd0 (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
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
/** @file
  Declaration of protocol interfaces in EFI_TCP4_PROTOCOL and EFI_TCP6_PROTOCOL.
  It is the common head file for all Tcp*.c in TCP driver.

  Copyright (c) 2009 - 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 _TCP_MAIN_H_
#define _TCP_MAIN_H_

#include <Protocol/ServiceBinding.h>
#include <Protocol/DriverBinding.h>
#include <Library/IpIoLib.h>
#include <Library/DevicePathLib.h>

#include "Socket.h"
#include "TcpProto.h"
#include "TcpDriver.h"
#include "TcpFunc.h"

extern UINT16                        mTcp4RandomPort;
extern UINT16                        mTcp6RandomPort;
extern CHAR16                        *mTcpStateName[];
extern EFI_COMPONENT_NAME_PROTOCOL   gTcpComponentName;
extern EFI_COMPONENT_NAME2_PROTOCOL  gTcpComponentName2;

extern LIST_ENTRY                    mTcpRunQue;
extern LIST_ENTRY                    mTcpListenQue;
extern TCP_SEQNO                     mTcpGlobalIss;
extern UINT32                        mTcpTick;

///
/// 30 seconds.
///
#define TCP6_KEEP_NEIGHBOR_TIME    30
///
/// 5 seconds, since 1 tick equals 200ms.
///
#define TCP6_REFRESH_NEIGHBOR_TICK 25

#define TCP_EXPIRE_TIME            65535

///
/// The implementation selects the initial send sequence number and the unit to
/// be added when it is increased.
///
#define TCP_BASE_ISS               0x4d7e980b
#define TCP_ISS_INCREMENT_1        2048
#define TCP_ISS_INCREMENT_2        100

typedef union {
  EFI_TCP4_CONFIG_DATA  Tcp4CfgData;
  EFI_TCP6_CONFIG_DATA  Tcp6CfgData;
} TCP_CONFIG_DATA;

typedef union {
  EFI_TCP4_ACCESS_POINT  Tcp4Ap;
  EFI_TCP6_ACCESS_POINT  Tcp6Ap;
} TCP_ACCESS_POINT;

typedef struct _TCP4_MODE_DATA {
  EFI_TCP4_CONNECTION_STATE       *Tcp4State;
  EFI_TCP4_CONFIG_DATA            *Tcp4ConfigData;
  EFI_IP4_MODE_DATA               *Ip4ModeData;
  EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData;
  EFI_SIMPLE_NETWORK_MODE         *SnpModeData;
} TCP4_MODE_DATA;

typedef struct _TCP6_MODE_DATA {
  EFI_TCP6_CONNECTION_STATE       *Tcp6State;
  EFI_TCP6_CONFIG_DATA            *Tcp6ConfigData;
  EFI_IP6_MODE_DATA               *Ip6ModeData;
  EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData;
  EFI_SIMPLE_NETWORK_MODE         *SnpModeData;
} TCP6_MODE_DATA;

typedef struct _TCP4_ROUTE_INFO {
  BOOLEAN           DeleteRoute;
  EFI_IPv4_ADDRESS  *SubnetAddress;
  EFI_IPv4_ADDRESS  *SubnetMask;
  EFI_IPv4_ADDRESS  *GatewayAddress;
} TCP4_ROUTE_INFO;

//
// EFI_TCP4_PROTOCOL definitions.
//

/**
  Get the current operational status.

  @param[in]   This                Pointer to the EFI_TCP4_PROTOCOL instance.
  @param[out]  Tcp4State           Pointer to the buffer to receive the current TCP
                                   state. Optional parameter that may be NULL.
  @param[out]  Tcp4ConfigData      Pointer to the buffer to receive the current TCP
                                   configuration. Optional parameter that may be NULL.
  @param[out]  Ip4ModeData         Pointer to the buffer to receive the current
                                   IPv4 configuration. Optional parameter that may be NULL.
  @param[out]  MnpConfigData       Pointer to the buffer to receive the current MNP
                                   configuration data indirectly used by the TCPv4
                                   Instance. Optional parameter that may be NULL.
  @param[out]  SnpModeData         Pointer to the buffer to receive the current SNP
                                   configuration data indirectly used by the TCPv4
                                   Instance. Optional parameter that may be NULL.

  @retval EFI_SUCCESS              The mode data was read.
  @retval EFI_NOT_STARTED          No configuration data is available because this
                                   instance hasn't been started.
  @retval EFI_INVALID_PARAMETER    This is NULL.

**/
EFI_STATUS
EFIAPI
Tcp4GetModeData (
  IN   EFI_TCP4_PROTOCOL                  *This,
  OUT  EFI_TCP4_CONNECTION_STATE          *Tcp4State      OPTIONAL,
  OUT  EFI_TCP4_CONFIG_DATA               *Tcp4ConfigData OPTIONAL,
  OUT  EFI_IP4_MODE_DATA                  *Ip4ModeData    OPTIONAL,
  OUT  EFI_MANAGED_NETWORK_CONFIG_DATA    *MnpConfigData  OPTIONAL,
  OUT  EFI_SIMPLE_NETWORK_MODE            *SnpModeData    OPTIONAL
  );

/**
  Initialize or brutally reset the operational parameters for
  this EFI TCPv4 instance.

  @param[in]   This                Pointer to the EFI_TCP4_PROTOCOL instance.
  @param[in]   TcpConfigData       Pointer to the configure data to configure the
                                   instance. Optional parameter that may be NULL.

  @retval EFI_SUCCESS              The operational settings are set, changed, or
                                   reset successfully.
  @retval EFI_NO_MAPPING           When using a default address, configuration
                                   (through DHCP, BOOTP, RARP, etc.) is not
                                   finished.
  @retval EFI_INVALID_PARAMETER    One or more parameters are invalid.
  @retval EFI_ACCESS_DENIED        Configuring the TCP instance when it is already
                                   configured.
  @retval EFI_DEVICE_ERROR         An unexpected network or system error occurred.
  @retval EFI_UNSUPPORTED          One or more of the control options are not
                                   supported in the implementation.
  @retval EFI_OUT_OF_RESOURCES     Could not allocate enough system resources.

**/
EFI_STATUS
EFIAPI
Tcp4Configure (
  IN EFI_TCP4_PROTOCOL        * This,
  IN EFI_TCP4_CONFIG_DATA     * TcpConfigData OPTIONAL
  );

/**
  Add or delete routing entries.

  @param[in]  This                 Pointer to the EFI_TCP4_PROTOCOL instance.
  @param[in]  DeleteRoute          If TRUE, delete the specified route from routing
                                   table; if FALSE, add the specified route to
                                   routing table.
  @param[in]  SubnetAddress        The destination network.
  @param[in]  SubnetMask           The subnet mask for the destination network.
  @param[in]  GatewayAddress       The gateway address for this route.

  @retval EFI_SUCCESS              The operation completed successfully.
  @retval EFI_NOT_STARTED          The EFI_TCP4_PROTOCOL instance has not been
                                   configured.
  @retval EFI_NO_MAPPING           When using a default address, configuration
                                   (through DHCP, BOOTP, RARP, etc.) is not
                                   finished.
  @retval EFI_INVALID_PARAMETER    One or more parameters are invalid.
  @retval EFI_OUT_OF_RESOURCES     Could not allocate enough resources to add the
                                   entry to the routing table.
  @retval EFI_NOT_FOUND            This route is not in the routing table.
  @retval EFI_ACCESS_DENIED        This route is already in the routing table.
  @retval EFI_UNSUPPORTED          The TCP driver does not support this operation.

**/
EFI_STATUS
EFIAPI
Tcp4Routes (
  IN EFI_TCP4_PROTOCOL           *This,
  IN BOOLEAN                     DeleteRoute,
  IN EFI_IPv4_ADDRESS            *SubnetAddress,
  IN EFI_IPv4_ADDRESS            *SubnetMask,
  IN EFI_IPv4_ADDRESS            *GatewayAddress
  );

/**
  Initiate a nonblocking TCP connection request for an active TCP instance.

  @param[in]  This                 Pointer to the EFI_TCP4_PROTOCOL instance.
  @param[in]  ConnectionToken      Pointer to the connection token to return when
                                   the TCP three way handshake finishes.

  @retval EFI_SUCCESS              The connection request is successfully
                                   initiated.
  @retval EFI_NOT_STARTED          This EFI_TCP4_PROTOCOL instance hasn't been
                                   configured.
  @retval EFI_ACCESS_DENIED        The instance is not configured as an active one
                                   or it is not in Tcp4StateClosed state.
  @retval EFI_INVALID_PARAMETER    One or more parameters are invalid.
  @retval EFI_OUT_OF_RESOURCES     The driver can't allocate enough resources to
                                   initiate the active open.
  @retval EFI_DEVICE_ERROR         An unexpected system or network error occurred.

**/
EFI_STATUS
EFIAPI
Tcp4Connect (
  IN EFI_TCP4_PROTOCOL           *This,
  IN EFI_TCP4_CONNECTION_TOKEN   *ConnectionToken
  );

/**
  Listen on the passive instance to accept an incoming connection request.

  @param[in]  This                 Pointer to the EFI_TCP4_PROTOCOL instance.
  @param[in]  ListenToken          Pointer to the listen token to return when
                                   operation finishes.

  @retval EFI_SUCCESS              The listen token has been queued successfully.
  @retval EFI_NOT_STARTED          The EFI_TCP4_PROTOCOL instance hasn't been
                                   configured.
  @retval EFI_ACCESS_DENIED        The instatnce is not a passive one or it is not
                                   in Tcp4StateListen state, or a same listen token
                                   has already existed in the listen token queue of
                                   this TCP instance.
  @retval EFI_INVALID_PARAMETER    One or more parameters are invalid.
  @retval EFI_OUT_OF_RESOURCES     Could not allocate enough resources to finish
                                   the operation.
  @retval EFI_DEVICE_ERROR         An unexpected system or network error occurred.

**/
EFI_STATUS
EFIAPI
Tcp4Accept (
  IN EFI_TCP4_PROTOCOL             *This,
  IN EFI_TCP4_LISTEN_TOKEN         *ListenToken
  );

/**
  Queues outgoing data into the transmit queue

  @param[in]  This                 Pointer to the EFI_TCP4_PROTOCOL instance
  @param[in]  Token                Pointer to the completion token to queue to the
                                   transmit queue

  @retval EFI_SUCCESS              The data has been queued for transmission
  @retval EFI_NOT_STARTED          The EFI_TCP4_PROTOCOL instance hasn't been
                                   configured.
  @retval EFI_NO_MAPPING           When using a default address, configuration
                                   (DHCP, BOOTP, RARP, etc.) is not finished yet.
  @retval EFI_INVALID_PARAMETER    One or more parameters are invalid
  @retval EFI_ACCESS_DENIED        One or more of the following conditions is TRUE:
                                   * A transmit completion token with the same
                                   Token-> CompletionToken.Event was already in the
                                   transmission queue. * The current instance is in
                                   Tcp4StateClosed state * The current instance is
                                   a passive one and it is in Tcp4StateListen
                                   state. * User has called Close() to disconnect
                                   this connection.
  @retval EFI_NOT_READY            The completion token could not be queued because
                                   the transmit queue is full.
  @retval EFI_OUT_OF_RESOURCES     Could not queue the transmit data because of a
                                   resource shortage.
  @retval EFI_NETWORK_UNREACHABLE  There is no route to the destination network or
                                   address.

**/
EFI_STATUS
EFIAPI
Tcp4Transmit (
  IN EFI_TCP4_PROTOCOL            *This,
  IN EFI_TCP4_IO_TOKEN            *Token
  );

/**
  Place an asynchronous receive request into the receiving queue.

  @param[in]  This                 Pointer to the EFI_TCP4_PROTOCOL instance.
  @param[in]  Token                Pointer to a token that is associated with the
                                   receive data descriptor.

  @retval EFI_SUCCESS              The receive completion token was cached.
  @retval EFI_NOT_STARTED          The EFI_TCP4_PROTOCOL instance hasn't been
                                   configured.
  @retval EFI_NO_MAPPING           When using a default address, configuration
                                   (DHCP, BOOTP, RARP, etc.) is not finished yet.
  @retval EFI_INVALID_PARAMETER    One or more parameters are invalid.
  @retval EFI_OUT_OF_RESOURCES     The receive completion token could not be queued
                                   due to a lack of system resources.
  @retval EFI_DEVICE_ERROR         An unexpected system or network error occurred.
  @retval EFI_ACCESS_DENIED        One or more of the following conditions is TRUE:
                                   * A receive completion token with the same
                                   Token->CompletionToken.Event was already in the
                                   receive queue. * The current instance is in
                                   Tcp4StateClosed state. * The current instance is
                                   a passive one and it is in Tcp4StateListen
                                   state. * User has called Close() to disconnect
                                   this connection.
  @retval EFI_CONNECTION_FIN       The communication peer has closed the connection
                                   and there is no buffered data in the receive
                                   buffer of this instance.
  @retval EFI_NOT_READY            The receive request could not be queued because
                                   the receive queue is full.

**/
EFI_STATUS
EFIAPI
Tcp4Receive (
  IN EFI_TCP4_PROTOCOL           *This,
  IN EFI_TCP4_IO_TOKEN           *Token
  );

/**
  Disconnecting a TCP connection gracefully or reset a TCP connection.

  @param[in]  This                 Pointer to the EFI_TCP4_PROTOCOL instance.
  @param[in]  CloseToken           Pointer to the close token to return when
                                   operation finishes.

  @retval EFI_SUCCESS              The operation completed successfully.
  @retval EFI_NOT_STARTED          The EFI_TCP4_PROTOCOL instance hasn't been
                                   configured.
  @retval EFI_ACCESS_DENIED        One or more of the following are TRUE: *
                                   Configure() has been called with TcpConfigData
                                   set to NULL and this function has not returned.
                                   * Previous Close() call on this instance has not
                                   finished.
  @retval EFI_INVALID_PARAMETER    One ore more parameters are invalid.
  @retval EFI_OUT_OF_RESOURCES     Could not allocate enough resources to finish the
                                   operation.
  @retval EFI_DEVICE_ERROR         Any unexpected error not belonging to the error
                                   categories given above.

**/
EFI_STATUS
EFIAPI
Tcp4Close (
  IN EFI_TCP4_PROTOCOL           *This,
  IN EFI_TCP4_CLOSE_TOKEN        *CloseToken
  );

/**
  Abort an asynchronous connection, listen, transmission or receive request.

  @param[in]  This                 Pointer to the EFI_TCP4_PROTOCOL instance.
  @param[in]  Token                Pointer to a token that has been issued by
                                   Connect(), Accept(), Transmit() or Receive(). If
                                   NULL, all pending tokens issued by the above four
                                   functions will be aborted.

  @retval EFI_UNSUPPORTED          The operation is not supported in the current
                                   implementation.

**/
EFI_STATUS
EFIAPI
Tcp4Cancel (
  IN EFI_TCP4_PROTOCOL             *This,
  IN EFI_TCP4_COMPLETION_TOKEN     *Token OPTIONAL
  );

/**
  Poll to receive incoming data and transmit outgoing segments.

  @param[in]  This                 Pointer to the EFI_TCP4_PROTOCOL instance.

  @retval EFI_SUCCESS              Incoming or outgoing data was processed.
  @retval EFI_INVALID_PARAMETER    This is NULL.
  @retval EFI_DEVICE_ERROR         An unexpected system or network error occurred.
  @retval EFI_NOT_READY            No incoming or outgoing data was processed.
  @retval EFI_TIMEOUT              Data was dropped out of the transmission or
                                   receive queue. Consider increasing the polling
                                   rate.

**/
EFI_STATUS
EFIAPI
Tcp4Poll (
  IN EFI_TCP4_PROTOCOL        *This
  );

//
// EFI_TCP6_PROTOCOL definitions.
//

/**
  Get the current operational status.

  The GetModeData() function copies the current operational settings of this EFI TCPv6
  Protocol instance into user-supplied buffers. This function can also be used to retrieve
  the operational setting of underlying drivers such as IPv6, MNP, or SNP.

  @param[in]  This              Pointer to the EFI_TCP6_PROTOCOL instance.
  @param[out] Tcp6State         The buffer in which the current TCP state is
                                returned. Optional parameter that may be NULL.
  @param[out] Tcp6ConfigData    The buffer in which the current TCP configuration
                                is returned. Optional parameter that may be NULL.
  @param[out] Ip6ModeData       The buffer in which the current IPv6 configuration
                                data used by the TCP instance is returned.
                                Optional parameter that may be NULL.
  @param[out] MnpConfigData     The buffer in which the current MNP configuration
                                data used indirectly by the TCP instance is returned.
                                Optional parameter that may be NULL.
  @param[out] SnpModeData       The buffer in which the current SNP mode data
                                 used indirectly by the TCP instance is returned.
                                Optional parameter that may be NULL.

  @retval EFI_SUCCESS           The mode data was read.
  @retval EFI_NOT_STARTED       No configuration data is available because this instance hasn't
                                been started.
  @retval EFI_INVALID_PARAMETER This is NULL.

**/
EFI_STATUS
EFIAPI
Tcp6GetModeData (
  IN  EFI_TCP6_PROTOCOL                  *This,
  OUT EFI_TCP6_CONNECTION_STATE          *Tcp6State      OPTIONAL,
  OUT EFI_TCP6_CONFIG_DATA               *Tcp6ConfigData OPTIONAL,
  OUT EFI_IP6_MODE_DATA                  *Ip6ModeData    OPTIONAL,
  OUT EFI_MANAGED_NETWORK_CONFIG_DATA    *MnpConfigData  OPTIONAL,
  OUT EFI_SIMPLE_NETWORK_MODE            *SnpModeData    OPTIONAL
  );

/**
  Initialize or brutally reset the operational parameters for this EFI TCPv6 instance.

  The Configure() function does the following:
  - Initialize this TCP instance, i.e., initialize the communication end settings and
    specify active open or passive open for an instance.
  - Reset this TCP instance brutally, i.e., cancel all pending asynchronous tokens, flush
    transmission and receiving buffer directly without informing the communication peer.

  No other TCPv6 Protocol operation except Poll() can be executed by this instance until
  it is configured properly. For an active TCP instance, after a proper configuration it
  may call Connect() to initiates the three-way handshake. For a passive TCP instance,
  its state will transit to Tcp6StateListen after configuration, and Accept() may be
  called to listen the incoming TCP connection requests. If Tcp6ConfigData is set to NULL,
  the instance is reset. Resetting process will be done brutally, the state machine will
  be set to Tcp6StateClosed directly, the receive queue and transmit queue will be flushed,
  and no traffic is allowed through this instance.

  @param[in] This               Pointer to the EFI_TCP6_PROTOCOL instance.
  @param[in] Tcp6ConfigData     Pointer to the configure data to configure the instance.
                                If Tcp6ConfigData is set to NULL, the instance is reset.

  @retval EFI_SUCCESS           The operational settings were set, changed, or reset
                                successfully.
  @retval EFI_NO_MAPPING        The underlying IPv6 driver was responsible for choosing a source
                                address for this instance, but no source address was available for
                                use.
  @retval EFI_INVALID_PARAMETER One or more of the following conditions are TRUE:
                                - This is NULL.
                                - Tcp6ConfigData->AccessPoint.StationAddress is neither zero nor
                                  one of the configured IP addresses in the underlying IPv6 driver.
                                - Tcp6ConfigData->AccessPoint.RemoteAddress isn't a valid unicast
                                  IPv6 address.
                                - Tcp6ConfigData->AccessPoint.RemoteAddress is zero or
                                  Tcp6ConfigData->AccessPoint.RemotePort is zero when
                                  Tcp6ConfigData->AccessPoint.ActiveFlag is TRUE.
                                - A same access point has been configured in other TCP
                                  instance properly.
  @retval EFI_ACCESS_DENIED     Configuring TCP instance when it is configured without
                                calling Configure() with NULL to reset it.
  @retval EFI_UNSUPPORTED       One or more of the control options are not supported in
                                the implementation.
  @retval EFI_OUT_OF_RESOURCES  Could not allocate enough system resources when
                                executing Configure().
  @retval EFI_DEVICE_ERROR      An unexpected network or system error occurred.

**/
EFI_STATUS
EFIAPI
Tcp6Configure (
  IN EFI_TCP6_PROTOCOL        *This,
  IN EFI_TCP6_CONFIG_DATA     *Tcp6ConfigData OPTIONAL
  );

/**
  Initiate a nonblocking TCP connection request for an active TCP instance.

  The Connect() function will initiate an active open to the remote peer configured
  in current TCP instance if it is configured active. If the connection succeeds or
  fails due to an error, the ConnectionToken->CompletionToken.Event will be signaled,
  and ConnectionToken->CompletionToken.Status will be updated accordingly. This
  function can only be called for the TCP instance in Tcp6StateClosed state. The
  instance will transfer into Tcp6StateSynSent if the function returns EFI_SUCCESS.
  If TCP three-way handshake succeeds, its state will become Tcp6StateEstablished;
  otherwise, the state will return to Tcp6StateClosed.

  @param[in] This                Pointer to the EFI_TCP6_PROTOCOL instance.
  @param[in] ConnectionToken     Pointer to the connection token to return when the TCP
                                 three-way handshake finishes.

  @retval EFI_SUCCESS            The connection request successfully initiated and the state of
                                 this TCP instance has been changed to Tcp6StateSynSent.
  @retval EFI_NOT_STARTED        This EFI TCPv6 Protocol instance has not been configured.
  @retval EFI_ACCESS_DENIED      One or more of the following conditions are TRUE:
                                 - This instance is not configured as an active instance.
                                 - This instance is not in Tcp6StateClosed state.
  @retval EFI_INVALID_PARAMETER  One or more of the following are TRUE:
                                 - This is NULL.
                                 - ConnectionToken is NULL.
                                 - ConnectionToken->CompletionToken.Event is NULL.
  @retval EFI_OUT_OF_RESOURCES   The driver can't allocate enough resources to initiate the active open.
  @retval EFI_DEVICE_ERROR       An unexpected system or network error occurred.

**/
EFI_STATUS
EFIAPI
Tcp6Connect (
  IN EFI_TCP6_PROTOCOL           *This,
  IN EFI_TCP6_CONNECTION_TOKEN   *ConnectionToken
  );

/**
  Listen on the passive instance to accept an incoming connection request. This is a
  nonblocking operation.

  The Accept() function initiates an asynchronous accept request to wait for an incoming
  connection on the passive TCP instance. If a remote peer successfully establishes a
  connection with this instance, a new TCP instance will be created and its handle will
  be returned in ListenToken->NewChildHandle. The newly created instance is configured
  by inheriting the passive instance's configuration, and is ready for use upon return.
  The new instance is in the Tcp6StateEstablished state.

  The ListenToken->CompletionToken.Event will be signaled when a new connection is
  accepted, user aborts the listen or connection is reset.

  This function only can be called when the current TCP instance is in Tcp6StateListen state.

  @param[in] This                Pointer to the EFI_TCP6_PROTOCOL instance.
  @param[in] ListenToken         Pointer to the listen token to return when the operation finishes.


  @retval EFI_SUCCESS            The listen token was been queued successfully.
  @retval EFI_NOT_STARTED        This EFI TCPv6 Protocol instance has not been configured.
  @retval EFI_ACCESS_DENIED      One or more of the following are TRUE:
                                 - This instance is not a passive instance.
                                 - This instance is not in Tcp6StateListen state.
                                 - The same listen token has already existed in the listen
                                   token queue of this TCP instance.
  @retval EFI_INVALID_PARAMETER  One or more of the following are TRUE:
                                 - This is NULL.
                                 - ListenToken is NULL.
                                 - ListentToken->CompletionToken.Event is NULL.
  @retval EFI_OUT_OF_RESOURCES   Could not allocate enough resources to finish the operation.
  @retval EFI_DEVICE_ERROR       Any unexpected error not belonging to the error
                                 categories given above.

**/
EFI_STATUS
EFIAPI
Tcp6Accept (
  IN EFI_TCP6_PROTOCOL             *This,
  IN EFI_TCP6_LISTEN_TOKEN         *ListenToken
  );

/**
  Queues outgoing data into the transmit queue.

  The Transmit() function queues a sending request to this TCP instance along with the
  user data. The status of the token is updated and the event in the token will be
  signaled once the data is sent out or some error occurs.

  @param[in] This                 Pointer to the EFI_TCP6_PROTOCOL instance.
  @param[in] Token                Pointer to the completion token to queue to the transmit queue.

  @retval EFI_SUCCESS             The data has been queued for transmission.
  @retval EFI_NOT_STARTED         This EFI TCPv6 Protocol instance has not been configured.
  @retval EFI_NO_MAPPING          The underlying IPv6 driver was responsible for choosing a
                                  source address for this instance, but no source address was
                                  available for use.
  @retval EFI_INVALID_PARAMETER   One or more of the following are TRUE:
                                  - This is NULL.
                                  - Token is NULL.
                                  - Token->CompletionToken.Event is NULL.
                                  - Token->Packet.TxData is NULL.
                                  - Token->Packet.FragmentCount is zero.
                                  - Token->Packet.DataLength is not equal to the sum of fragment lengths.
  @retval EFI_ACCESS_DENIED       One or more of the following conditions are TRUE:
                                  - A transmit completion token with the same Token->
                                    CompletionToken.Event was already in the
                                    transmission queue.
                                  - The current instance is in Tcp6StateClosed state.
                                  - The current instance is a passive one and it is in
                                    Tcp6StateListen state.
                                  - User has called Close() to disconnect this connection.
  @retval EFI_NOT_READY           The completion token could not be queued because the
                                  transmit queue is full.
  @retval EFI_OUT_OF_RESOURCES    Could not queue the transmit data because of a resource
                                  shortage.
  @retval EFI_NETWORK_UNREACHABLE There is no route to the destination network or address.

**/
EFI_STATUS
EFIAPI
Tcp6Transmit (
  IN EFI_TCP6_PROTOCOL            *This,
  IN EFI_TCP6_IO_TOKEN            *Token
  );

/**
  Places an asynchronous receive request into the receiving queue.

  The Receive() function places a completion token into the receive packet queue. This
  function is always asynchronous. The caller must allocate the Token->CompletionToken.Event
  and the FragmentBuffer used to receive data. The caller also must fill the DataLength, which
  represents the whole length of all FragmentBuffer. When the receive operation completes, the
  EFI TCPv6 Protocol driver updates the Token->CompletionToken.Status and Token->Packet.RxData
  fields, and the Token->CompletionToken.Event is signaled. If data is obtained, the data and its length
  will be copied into the FragmentTable. At the same time the full length of received data will
  be recorded in the DataLength fields. Providing a proper notification function and context
  for the event enables the user to receive the notification and receiving status. That
  notification function is guaranteed to not be re-entered.

  @param[in] This               Pointer to the EFI_TCP6_PROTOCOL instance.
  @param[in] Token              Pointer to a token that is associated with the receive data
                                descriptor.

  @retval EFI_SUCCESS            The receive completion token was cached.
  @retval EFI_NOT_STARTED        This EFI TCPv6 Protocol instance has not been configured.
  @retval EFI_NO_MAPPING         The underlying IPv6 driver was responsible for choosing a source
                                 address for this instance, but no source address was available for use.
  @retval EFI_INVALID_PARAMETER  One or more of the following conditions is TRUE:
                                 - This is NULL.
                                 - Token is NULL.
                                 - Token->CompletionToken.Event is NULL.
                                 - Token->Packet.RxData is NULL.
                                 - Token->Packet.RxData->DataLength is 0.
                                 - The Token->Packet.RxData->DataLength is not the
                                   sum of all FragmentBuffer length in FragmentTable.
  @retval EFI_OUT_OF_RESOURCES   The receive completion token could not be queued due to a lack of
                                 system resources (usually memory).
  @retval EFI_DEVICE_ERROR       An unexpected system or network error occurred.
                                 The EFI TCPv6 Protocol instance has been reset to startup defaults.
  @retval EFI_ACCESS_DENIED      One or more of the following conditions is TRUE:
                                 - A receive completion token with the same Token->CompletionToken.Event
                                   was already in the receive queue.
                                 - The current instance is in Tcp6StateClosed state.
                                 - The current instance is a passive one and it is in
                                   Tcp6StateListen state.
                                 - The user has called Close() to disconnect this connection.
  @retval EFI_CONNECTION_FIN     The communication peer has closed the connection, and there is no
                                 buffered data in the receive buffer of this instance.
  @retval EFI_NOT_READY          The receive request could not be queued because the receive queue is full.

**/
EFI_STATUS
EFIAPI
Tcp6Receive (
  IN EFI_TCP6_PROTOCOL           *This,
  IN EFI_TCP6_IO_TOKEN           *Token
  );

/**
  Disconnecting a TCP connection gracefully or reset a TCP connection. This function is a
  nonblocking operation.

  Initiate an asynchronous close token to the TCP driver. After Close() is called, any buffered
  transmission data will be sent by the TCP driver, and the current instance will have a graceful close
  working flow described as RFC 793 if AbortOnClose is set to FALSE, otherwise, a rest packet
  will be sent by TCP driver to fast disconnect this connection. When the close operation completes
  successfully the TCP instance is in Tcp6StateClosed state, all pending asynchronous
  operations are signaled, and any buffers used for TCP network traffic are flushed.

  @param[in] This                Pointer to the EFI_TCP6_PROTOCOL instance.
  @param[in] CloseToken          Pointer to the close token to return when operation finishes.

  @retval EFI_SUCCESS            The Close() was called successfully.
  @retval EFI_NOT_STARTED        This EFI TCPv6 Protocol instance has not been configured.
  @retval EFI_ACCESS_DENIED      One or more of the following are TRUE:
                                 - CloseToken or CloseToken->CompletionToken.Event is already in use.
                                 - Previous Close() call on this instance has not finished.
  @retval EFI_INVALID_PARAMETER  One or more of the following are TRUE:
                                 - This is NULL.
                                 - CloseToken is NULL.
                                 - CloseToken->CompletionToken.Event is NULL.
  @retval EFI_OUT_OF_RESOURCES   Could not allocate enough resources to finish the operation.
  @retval EFI_DEVICE_ERROR       Any unexpected error not belonging to the error categories given above.

**/
EFI_STATUS
EFIAPI
Tcp6Close (
  IN EFI_TCP6_PROTOCOL           *This,
  IN EFI_TCP6_CLOSE_TOKEN        *CloseToken
  );

/**
  Abort an asynchronous connection, listen, transmission or receive request.

  The Cancel() function aborts a pending connection, listen, transmit or
  receive request.

  If Token is not NULL and the token is in the connection, listen, transmission
  or receive queue when it is being cancelled, its Token->Status will be set
  to EFI_ABORTED and then Token->Event will be signaled.

  If the token is not in one of the queues, which usually means that the
  asynchronous operation has completed, EFI_NOT_FOUND is returned.

  If Token is NULL all asynchronous token issued by Connect(), Accept(),
  Transmit() and Receive() will be aborted.

  @param[in] This                Pointer to the EFI_TCP6_PROTOCOL instance.
  @param[in] Token               Pointer to a token that has been issued by
                                 EFI_TCP6_PROTOCOL.Connect(),
                                 EFI_TCP6_PROTOCOL.Accept(),
                                 EFI_TCP6_PROTOCOL.Transmit() or
                                 EFI_TCP6_PROTOCOL.Receive(). If NULL, all pending
                                 tokens issued by above four functions will be aborted. Type
                                 EFI_TCP6_COMPLETION_TOKEN is defined in
                                 EFI_TCP_PROTOCOL.Connect().

  @retval EFI_UNSUPPORTED        The implementation does not support this function.

**/
EFI_STATUS
EFIAPI
Tcp6Cancel (
  IN EFI_TCP6_PROTOCOL           *This,
  IN EFI_TCP6_COMPLETION_TOKEN   *Token OPTIONAL
  );

/**
  Poll to receive incoming data and transmit outgoing segments.

  The Poll() function increases the rate that data is moved between the network
  and application and can be called when the TCP instance is created successfully.
  Its use is optional.

  @param[in] This                Pointer to the EFI_TCP6_PROTOCOL instance.

  @retval EFI_SUCCESS            Incoming or outgoing data was processed.
  @retval EFI_INVALID_PARAMETER  This is NULL.
  @retval EFI_DEVICE_ERROR       An unexpected system or network error occurred.
  @retval EFI_NOT_READY          No incoming or outgoing data is processed.
  @retval EFI_TIMEOUT            Data was dropped out of the transmission or receive queue.
                                 Consider increasing the polling rate.

**/
EFI_STATUS
EFIAPI
Tcp6Poll (
  IN EFI_TCP6_PROTOCOL        *This
  );

#endif