summaryrefslogtreecommitdiff
path: root/MdeModulePkg/Universal/Network/Ip4ConfigDxe/Ip4ConfigDriver.c
blob: 05bdb5e8ca82cd438550a93024222f092d871b65 (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
/** @file
  The driver binding for IP4 CONFIG protocol.

Copyright (c) 2006 - 2009, Intel Corporation.<BR>
All rights reserved. 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<BR>
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.

**/


#include "Ip4Config.h"
#include "Ip4ConfigNv.h"

EFI_DRIVER_BINDING_PROTOCOL gIp4ConfigDriverBinding = {
  Ip4ConfigDriverBindingSupported,
  Ip4ConfigDriverBindingStart,
  Ip4ConfigDriverBindingStop,
  0xa,
  NULL,
  NULL
};

/**
  Stop all the auto configuration when the IP4 configure driver is
  being unloaded.

  @param  ImageHandle          The driver that is being unloaded

  @retval EFI_SUCCESS          The driver has been ready for unload.

**/
EFI_STATUS
EFIAPI
EfiIp4ConfigUnload (
  IN EFI_HANDLE             ImageHandle
  )
{
  UINT32      Index;

  Ip4ConfigFormUnload ();

  //
  //  Stop all the IP4_CONFIG instances
  //
  for (Index = 0; Index < MAX_IP4_CONFIG_IN_VARIABLE; Index++) {
    if (mIp4ConfigNicList[Index] == NULL) {
      continue;
    }

    gIp4ConfigDriverBinding.Stop (
                              &gIp4ConfigDriverBinding,
                              mIp4ConfigNicList[Index]->MnpHandle,
                              0,
                              NULL
                              );
  }

  return NetLibDefaultUnload (ImageHandle);
}

/**
  The entry point for IP4 config driver which install the driver
  binding and component name protocol on its image.

  @param  ImageHandle            The image handle of the driver.
  @param  SystemTable            The system table.

  @retval EFI_SUCCES             All the related protocols are installed on the driver.
  @retval Others                 Failed to install protocols.

**/
EFI_STATUS
EFIAPI
Ip4ConfigDriverEntryPoint (
  IN EFI_HANDLE             ImageHandle,
  IN EFI_SYSTEM_TABLE       *SystemTable
  )
{
  Ip4ConfigFormInit ();

  return EfiLibInstallDriverBindingComponentName2 (
           ImageHandle,
           SystemTable,
           &gIp4ConfigDriverBinding,
           ImageHandle,
           &gIp4ConfigComponentName,
           &gIp4ConfigComponentName2
           );
}


/**
  Test to see if this driver supports ControllerHandle.

  @param  This                 Protocol instance pointer.
  @param  ControllerHandle     Handle of device to test
  @param  RemainingDevicePath  Optional parameter use to pick a specific child
                               device to start.

  @retval EFI_SUCCES           This driver supports this device
  @retval EFI_ALREADY_STARTED  This driver is already running on this device
  @retval other                This driver does not support this device

**/
EFI_STATUS
EFIAPI
Ip4ConfigDriverBindingSupported (
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN EFI_HANDLE                   ControllerHandle,
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath  OPTIONAL
  )
{
  EFI_STATUS  Status;

  Status = gBS->OpenProtocol (
                  ControllerHandle,
                  &gEfiManagedNetworkServiceBindingProtocolGuid,
                  NULL,
                  This->DriverBindingHandle,
                  ControllerHandle,
                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
                  );

  return Status;
}


/**
  Start this driver on ControllerHandle.

  @param  This                 Protocol instance pointer.
  @param  ControllerHandle     Handle of device to bind driver to
  @param  RemainingDevicePath  Optional parameter use to pick a specific child
                               device to start.

  @retval EFI_SUCCES           This driver is added to ControllerHandle
  @retval EFI_ALREADY_STARTED  This driver is already running on ControllerHandle
  @retval other                This driver does not support this device

**/
EFI_STATUS
EFIAPI
Ip4ConfigDriverBindingStart (
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN EFI_HANDLE                   ControllerHandle,
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath OPTIONAL
  )
{
  EFI_IP4_CONFIG_PROTOCOL       *Ip4Config;
  EFI_MANAGED_NETWORK_PROTOCOL  *Mnp;
  EFI_HANDLE                    MnpHandle;
  IP4_CONFIG_INSTANCE           *Instance;
  EFI_SIMPLE_NETWORK_MODE       SnpMode;
  IP4_CONFIG_VARIABLE           *Variable;
  NIC_IP4_CONFIG_INFO           *NicConfig;
  IP4_CONFIG_VARIABLE           *NewVariable;
  EFI_STATUS                    Status;
  UINT32                        Index;

  //
  // Check for multiple start.
  //
  Status = gBS->OpenProtocol (
                  ControllerHandle,
                  &gEfiIp4ConfigProtocolGuid,
                  (VOID **) &Ip4Config,
                  This->DriverBindingHandle,
                  ControllerHandle,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );

  if (!EFI_ERROR (Status)) {
    return EFI_ALREADY_STARTED;
  }

  //
  // Create a MNP child
  //
  Mnp       = NULL;
  MnpHandle = NULL;
  Instance  = NULL;

  Status    = NetLibCreateServiceChild (
                ControllerHandle,
                This->DriverBindingHandle,
                &gEfiManagedNetworkServiceBindingProtocolGuid,
                &MnpHandle
                );

  if (EFI_ERROR (Status)) {
    return Status;
  }

  Status = gBS->OpenProtocol (
                  MnpHandle,
                  &gEfiManagedNetworkProtocolGuid,
                  (VOID **) &Mnp,
                  This->DriverBindingHandle,
                  ControllerHandle,
                  EFI_OPEN_PROTOCOL_BY_DRIVER
                  );

  if (EFI_ERROR (Status)) {
    goto ON_ERROR;
  }

  //
  // Allocate an instance then initialize it
  //
  Instance = AllocatePool (sizeof (IP4_CONFIG_INSTANCE));

  if (Instance == NULL) {
    Status = EFI_OUT_OF_RESOURCES;
    goto ON_ERROR;
  }

  Instance->Signature         = IP4_CONFIG_INSTANCE_SIGNATURE;
  Instance->Controller        = ControllerHandle;
  Instance->Image             = This->DriverBindingHandle;

  CopyMem (&Instance->Ip4ConfigProtocol, &mIp4ConfigProtocolTemplate, sizeof (mIp4ConfigProtocolTemplate));

  Instance->State             = IP4_CONFIG_STATE_IDLE;
  Instance->Mnp               = Mnp;
  Instance->MnpHandle         = MnpHandle;

  Instance->DoneEvent         = NULL;
  Instance->ReconfigEvent     = NULL;
  Instance->Result            = EFI_NOT_READY;
  Instance->NicConfig         = NULL;

  Instance->Dhcp4             = NULL;
  Instance->Dhcp4Handle       = NULL;
  Instance->Dhcp4Event        = NULL;

  Status = Mnp->GetModeData (Mnp, NULL, &SnpMode);

  if (EFI_ERROR (Status) && (Status != EFI_NOT_STARTED)) {
    goto ON_ERROR;
  }

  Instance->NicAddr.Type    = (UINT16) SnpMode.IfType;
  Instance->NicAddr.Len     = (UINT8) SnpMode.HwAddressSize;
  CopyMem (&Instance->NicAddr.MacAddr, &SnpMode.CurrentAddress, Instance->NicAddr.Len);

  //
  // Add it to the global list, and compose the name
  //
  for (Index = 0; Index < MAX_IP4_CONFIG_IN_VARIABLE; Index++) {
    if (mIp4ConfigNicList[Index] == NULL) {
      mIp4ConfigNicList[Index]  = Instance;
      Instance->NicIndex        = Index;

      if (Instance->NicAddr.Type == NET_IFTYPE_ETHERNET) {
        Instance->NicName[0]  = 'e';
        Instance->NicName[1]  = 't';
        Instance->NicName[2]  = 'h';
        Instance->NicName[3]  = (UINT16) ('0' + Index);
        Instance->NicName[4]  = 0;
      } else {
        Instance->NicName[0]  = 'u';
        Instance->NicName[1]  = 'n';
        Instance->NicName[2]  = 'k';
        Instance->NicName[3]  = (UINT16) ('0' + Index);
        Instance->NicName[4]  = 0;
      }

      break;
    }
  }

  if (Index == MAX_IP4_CONFIG_IN_VARIABLE) {
    Status = EFI_OUT_OF_RESOURCES;
    goto ON_ERROR;
  }

  Status = Ip4ConfigDeviceInit (Instance);
  if (!EFI_ERROR (Status)) {
    //
    // Try to add a port configuration page for this controller.
    //
    Ip4ConfigUpdateForm (Instance, TRUE);
  }

  //
  // Install the IP4_CONFIG and NIC_IP4CONFIG protocols
  //
  Status = gBS->InstallMultipleProtocolInterfaces (
                  &ControllerHandle,
                  &gEfiIp4ConfigProtocolGuid,
                  &Instance->Ip4ConfigProtocol,
                  NULL
                  );

  if (EFI_ERROR (Status)) {
    mIp4ConfigNicList[Index] = NULL;
    goto ON_ERROR;
  }

  //
  // Get the previous configure parameters. If an error happend here,
  // just ignore it because the driver should be able to operate.
  //
  Variable = Ip4ConfigReadVariable ();

  if (Variable == NULL) {
    return EFI_SUCCESS;
  }

  NicConfig = Ip4ConfigFindNicVariable (Variable, &Instance->NicAddr);

  if (NicConfig == NULL) {
    goto ON_EXIT;
  }

  //
  // Don't modify the permant static configuration
  //
  if (NicConfig->Perment && (NicConfig->Source == IP4_CONFIG_SOURCE_STATIC)) {
    goto ON_EXIT;
  }

  //
  // Delete the non-permant configuration and remove the previous
  // acquired DHCP parameters. Only doing DHCP itself is permant
  //
  NewVariable = NULL;

  if (!NicConfig->Perment) {
    NewVariable = Ip4ConfigModifyVariable (Variable, &Instance->NicAddr, NULL);

  } else if (NicConfig->Source == IP4_CONFIG_SOURCE_DHCP) {
    ZeroMem (&NicConfig->Ip4Info, sizeof (EFI_IP4_IPCONFIG_DATA));
    NewVariable = Ip4ConfigModifyVariable (Variable, &Instance->NicAddr, NicConfig);

  }

  Ip4ConfigWriteVariable (NewVariable);

  if (NewVariable != NULL) {
    gBS->FreePool (NewVariable);
  }

ON_EXIT:
  gBS->FreePool (Variable);

  if (NicConfig != NULL) {
    gBS->FreePool (NicConfig);
  }

  return EFI_SUCCESS;

ON_ERROR:
  if (Instance != NULL) {
    gBS->FreePool (Instance);
  }

  if (Mnp != NULL) {
    gBS->CloseProtocol (
          MnpHandle,
          &gEfiManagedNetworkProtocolGuid,
          This->DriverBindingHandle,
          ControllerHandle
          );
  }

  NetLibDestroyServiceChild (
    ControllerHandle,
    This->DriverBindingHandle,
    &gEfiManagedNetworkProtocolGuid,
    MnpHandle
    );

  return Status;
}


/**
  Stop this driver on ControllerHandle.

  @param  This                 Protocol instance pointer.
  @param  ControllerHandle     Handle of device to stop driver on
  @param  NumberOfChildren     Number of Handles in ChildHandleBuffer. If number of
                                children is zero stop the entire bus driver.
  @param  ChildHandleBuffer    List of Child Handles to Stop.

  @retval EFI_SUCCES           This driver is removed ControllerHandle
  @retval other                This driver was not removed from this device

**/
EFI_STATUS
EFIAPI
Ip4ConfigDriverBindingStop (
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN EFI_HANDLE                   ControllerHandle,
  IN UINTN                        NumberOfChildren,
  IN EFI_HANDLE                   *ChildHandleBuffer
  )
{
  IP4_CONFIG_INSTANCE       *Instance;
  EFI_IP4_CONFIG_PROTOCOL   *Ip4Config;
  EFI_HANDLE                NicHandle;
  EFI_STATUS                Status;

  //
  // IP4_CONFIG instance opens an MNP child. It may also create and open
  // a DHCP child. If this is the DHCP handle, stop the DHCP process. If
  // it is the MNP child, stop the whole driver.
  //
  //
  NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiDhcp4ProtocolGuid);

  if (NicHandle != NULL) {
    //
    // Get our context back then clean the DHCP up. Notify the user if necessary.
    //
    Status = gBS->OpenProtocol (
                    NicHandle,
                    &gEfiIp4ConfigProtocolGuid,
                    (VOID **) &Ip4Config,
                    This->DriverBindingHandle,
                    ControllerHandle,
                    EFI_OPEN_PROTOCOL_GET_PROTOCOL
                    );

    if (EFI_ERROR (Status)) {
      return Status;
    }

    Instance = IP4_CONFIG_INSTANCE_FROM_IP4CONFIG (Ip4Config);
    ASSERT (ControllerHandle == Instance->Dhcp4Handle);

    Ip4ConfigCleanDhcp4 (Instance);

    Instance->State   = IP4_CONFIG_STATE_CONFIGURED;
    Instance->Result  = EFI_DEVICE_ERROR;

    if (Instance->DoneEvent != NULL) {
      gBS->SignalEvent (Instance->DoneEvent);
    }

    return EFI_SUCCESS;
  }

  //
  // This is a MNP handle, stop the whole driver
  //
  NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiManagedNetworkProtocolGuid);

  if (NicHandle == NULL) {
    return EFI_SUCCESS;
  }

  //
  // Get our context back.
  //
  Status = gBS->OpenProtocol (
                  NicHandle,
                  &gEfiIp4ConfigProtocolGuid,
                  (VOID **) &Ip4Config,
                  This->DriverBindingHandle,
                  ControllerHandle,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );

  if (EFI_ERROR (Status)) {
    return Status;
  }

  Instance = IP4_CONFIG_INSTANCE_FROM_IP4CONFIG (Ip4Config);

  Ip4ConfigDeviceUnload (Instance);

  //
  // Unload the protocols first to inform the top drivers
  //
  Status = gBS->UninstallMultipleProtocolInterfaces (
                  NicHandle,
                  &gEfiIp4ConfigProtocolGuid,
                  &Instance->Ip4ConfigProtocol,
                  NULL
                  );

  if (EFI_ERROR (Status)) {
    return Status;
  }

  //
  // Release all the resources
  //
  if (Instance->MnpHandle != NULL) {
    gBS->CloseProtocol (
          Instance->MnpHandle,
          &gEfiManagedNetworkProtocolGuid,
          This->DriverBindingHandle,
          NicHandle
          );

    NetLibDestroyServiceChild (
      NicHandle,
      Instance->Image,
      &gEfiManagedNetworkServiceBindingProtocolGuid,
      Instance->MnpHandle
      );

    Instance->Mnp       = NULL;
    Instance->MnpHandle = NULL;
  }

  Ip4ConfigCleanConfig (Instance);
  mIp4ConfigNicList[Instance->NicIndex] = NULL;
  gBS->FreePool (Instance);

  return EFI_SUCCESS;
}