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772db4bb | 1 | /** @file\r |
dab714aa | 2 | Implementation of Mtftp drivers.\r |
3 | \r | |
4 | Copyright (c) 2006 - 2007, Intel Corporation<BR>\r | |
772db4bb | 5 | All rights reserved. This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
dab714aa | 8 | http://opensource.org/licenses/bsd-license.php<BR>\r |
772db4bb | 9 | \r |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
772db4bb | 13 | **/\r |
14 | \r | |
15 | #include "Mtftp4Impl.h"\r | |
16 | \r | |
17 | EFI_DRIVER_BINDING_PROTOCOL gMtftp4DriverBinding = {\r | |
18 | Mtftp4DriverBindingSupported,\r | |
19 | Mtftp4DriverBindingStart,\r | |
20 | Mtftp4DriverBindingStop,\r | |
21 | 0xa,\r | |
22 | NULL,\r | |
23 | NULL\r | |
24 | };\r | |
25 | \r | |
26 | EFI_SERVICE_BINDING_PROTOCOL gMtftp4ServiceBindingTemplete = {\r | |
27 | Mtftp4ServiceBindingCreateChild,\r | |
28 | Mtftp4ServiceBindingDestroyChild\r | |
29 | };\r | |
30 | \r | |
dab714aa | 31 | \r |
32 | /**\r | |
33 | The driver entry point which installs multiple protocols to the ImageHandle.\r | |
34 | \r | |
35 | @param ImageHandle The MTFTP's image handle.\r | |
36 | @param SystemTable The system table.\r | |
37 | \r | |
38 | @retval EFI_SUCCESS The handles are successfully installed on the image. \r | |
39 | @retval others some EFI_ERROR occured.\r | |
40 | \r | |
41 | **/\r | |
772db4bb | 42 | EFI_STATUS\r |
43 | EFIAPI\r | |
44 | Mtftp4DriverEntryPoint (\r | |
45 | IN EFI_HANDLE ImageHandle,\r | |
46 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
47 | )\r | |
772db4bb | 48 | {\r |
83cbd279 | 49 | return EfiLibInstallDriverBindingComponentName2 (\r |
772db4bb | 50 | ImageHandle,\r |
51 | SystemTable,\r | |
52 | &gMtftp4DriverBinding,\r | |
53 | ImageHandle,\r | |
54 | &gMtftp4ComponentName,\r | |
83cbd279 | 55 | &gMtftp4ComponentName2\r |
772db4bb | 56 | );\r |
57 | }\r | |
58 | \r | |
59 | \r | |
60 | /**\r | |
61 | Test whether MTFTP driver support this controller.\r | |
62 | \r | |
63 | @param This The MTFTP driver binding instance\r | |
64 | @param Controller The controller to test\r | |
65 | @param RemainingDevicePath The remaining device path\r | |
66 | \r | |
67 | @retval EFI_SUCCESS The controller has UDP service binding protocol\r | |
68 | installed, MTFTP can support it.\r | |
69 | @retval Others MTFTP can't support the controller.\r | |
70 | \r | |
71 | **/\r | |
72 | EFI_STATUS\r | |
dab714aa | 73 | EFIAPI\r |
772db4bb | 74 | Mtftp4DriverBindingSupported (\r |
75 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
76 | IN EFI_HANDLE Controller,\r | |
77 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
78 | )\r | |
79 | {\r | |
80 | EFI_STATUS Status;\r | |
81 | \r | |
82 | Status = gBS->OpenProtocol (\r | |
83 | Controller,\r | |
84 | &gEfiUdp4ServiceBindingProtocolGuid,\r | |
85 | NULL,\r | |
86 | This->DriverBindingHandle,\r | |
87 | Controller,\r | |
88 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
89 | );\r | |
90 | \r | |
91 | return Status;\r | |
92 | }\r | |
93 | \r | |
94 | \r | |
95 | /**\r | |
dab714aa | 96 | Config a NULL UDP that is used to keep the connection between UDP and MTFTP. \r |
97 | \r | |
98 | Just leave the Udp child unconfigured. When UDP is unloaded, \r | |
99 | MTFTP will be informed with DriverBinding Stop.\r | |
772db4bb | 100 | \r |
101 | @param UdpIo The UDP port to configure\r | |
102 | @param Context The opaque parameter to the callback\r | |
103 | \r | |
104 | @retval EFI_SUCCESS It always return EFI_SUCCESS directly.\r | |
105 | \r | |
106 | **/\r | |
107 | EFI_STATUS\r | |
108 | Mtftp4ConfigNullUdp (\r | |
109 | IN UDP_IO_PORT *UdpIo,\r | |
110 | IN VOID *Context\r | |
111 | )\r | |
112 | {\r | |
113 | return EFI_SUCCESS;\r | |
114 | }\r | |
115 | \r | |
116 | \r | |
117 | /**\r | |
118 | Create then initialize a MTFTP service binding instance.\r | |
119 | \r | |
120 | @param Controller The controller to install the MTFTP service\r | |
121 | binding on\r | |
122 | @param Image The driver binding image of the MTFTP driver\r | |
123 | @param Service The variable to receive the created service\r | |
124 | binding instance.\r | |
125 | \r | |
126 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to create the instance\r | |
127 | @retval EFI_DEVICE_ERROR Failed to create a NULL UDP port to keep\r | |
128 | connection with UDP.\r | |
129 | @retval EFI_SUCCESS The service instance is created for the\r | |
130 | controller.\r | |
131 | \r | |
132 | **/\r | |
133 | EFI_STATUS\r | |
134 | Mtftp4CreateService (\r | |
dab714aa | 135 | IN EFI_HANDLE Controller,\r |
136 | IN EFI_HANDLE Image,\r | |
137 | OUT MTFTP4_SERVICE **Service\r | |
772db4bb | 138 | )\r |
139 | {\r | |
140 | MTFTP4_SERVICE *MtftpSb;\r | |
141 | EFI_STATUS Status;\r | |
142 | \r | |
143 | *Service = NULL;\r | |
e48e37fc | 144 | MtftpSb = AllocatePool (sizeof (MTFTP4_SERVICE));\r |
772db4bb | 145 | \r |
146 | if (MtftpSb == NULL) {\r | |
147 | return EFI_OUT_OF_RESOURCES;\r | |
148 | }\r | |
149 | \r | |
150 | MtftpSb->Signature = MTFTP4_SERVICE_SIGNATURE;\r | |
151 | MtftpSb->ServiceBinding = gMtftp4ServiceBindingTemplete;\r | |
152 | MtftpSb->InDestory = FALSE;\r | |
153 | MtftpSb->ChildrenNum = 0;\r | |
e48e37fc | 154 | InitializeListHead (&MtftpSb->Children);\r |
772db4bb | 155 | \r |
156 | MtftpSb->Timer = NULL;\r | |
157 | MtftpSb->TimerToGetMap = NULL;\r | |
158 | MtftpSb->Controller = Controller;\r | |
159 | MtftpSb->Image = Image;\r | |
160 | MtftpSb->ConnectUdp = NULL;\r | |
161 | \r | |
162 | //\r | |
163 | // Create the timer and a udp to be notified when UDP is uninstalled\r | |
164 | //\r | |
165 | Status = gBS->CreateEvent (\r | |
166 | EVT_NOTIFY_SIGNAL | EVT_TIMER,\r | |
e48e37fc | 167 | TPL_CALLBACK,\r |
772db4bb | 168 | Mtftp4OnTimerTick,\r |
169 | MtftpSb,\r | |
170 | &MtftpSb->Timer\r | |
171 | );\r | |
172 | \r | |
173 | if (EFI_ERROR (Status)) {\r | |
e48e37fc | 174 | gBS->FreePool (MtftpSb);\r |
772db4bb | 175 | return Status;\r |
176 | }\r | |
177 | \r | |
178 | //\r | |
179 | // Create the timer used to time out the procedure which is used to\r | |
180 | // get the default IP address.\r | |
181 | //\r | |
182 | Status = gBS->CreateEvent (\r | |
183 | EVT_TIMER,\r | |
e48e37fc | 184 | TPL_CALLBACK,\r |
772db4bb | 185 | NULL,\r |
186 | NULL,\r | |
187 | &MtftpSb->TimerToGetMap\r | |
188 | );\r | |
189 | if (EFI_ERROR (Status)) {\r | |
190 | gBS->CloseEvent (MtftpSb->Timer);\r | |
e48e37fc | 191 | gBS->FreePool (MtftpSb);\r |
772db4bb | 192 | return Status;\r |
193 | }\r | |
194 | \r | |
195 | MtftpSb->ConnectUdp = UdpIoCreatePort (Controller, Image, Mtftp4ConfigNullUdp, NULL);\r | |
196 | \r | |
197 | if (MtftpSb->ConnectUdp == NULL) {\r | |
198 | gBS->CloseEvent (MtftpSb->TimerToGetMap);\r | |
199 | gBS->CloseEvent (MtftpSb->Timer);\r | |
e48e37fc | 200 | gBS->FreePool (MtftpSb);\r |
772db4bb | 201 | return EFI_DEVICE_ERROR;\r |
202 | }\r | |
203 | \r | |
204 | *Service = MtftpSb;\r | |
205 | return EFI_SUCCESS;\r | |
206 | }\r | |
207 | \r | |
208 | \r | |
209 | /**\r | |
210 | Release all the resource used the MTFTP service binding instance.\r | |
211 | \r | |
212 | @param MtftpSb The MTFTP service binding instance.\r | |
213 | \r | |
772db4bb | 214 | **/\r |
215 | VOID\r | |
216 | Mtftp4CleanService (\r | |
217 | IN MTFTP4_SERVICE *MtftpSb\r | |
218 | )\r | |
219 | {\r | |
220 | UdpIoFreePort (MtftpSb->ConnectUdp);\r | |
221 | gBS->CloseEvent (MtftpSb->TimerToGetMap);\r | |
222 | gBS->CloseEvent (MtftpSb->Timer);\r | |
223 | }\r | |
224 | \r | |
225 | \r | |
226 | /**\r | |
dab714aa | 227 | Start the MTFTP driver on this controller. \r |
228 | \r | |
229 | MTFTP driver will install a MTFTP SERVICE BINDING protocol on the supported\r | |
772db4bb | 230 | controller, which can be used to create/destroy MTFTP children.\r |
231 | \r | |
232 | @param This The MTFTP driver binding protocol.\r | |
233 | @param Controller The controller to manage.\r | |
234 | @param RemainingDevicePath Remaining device path.\r | |
235 | \r | |
236 | @retval EFI_ALREADY_STARTED The MTFTP service binding protocol has been\r | |
237 | started on the controller.\r | |
238 | @retval EFI_SUCCESS The MTFTP service binding is installed on the\r | |
239 | controller.\r | |
240 | \r | |
241 | **/\r | |
242 | EFI_STATUS\r | |
dab714aa | 243 | EFIAPI\r |
772db4bb | 244 | Mtftp4DriverBindingStart (\r |
245 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
246 | IN EFI_HANDLE Controller,\r | |
247 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
248 | )\r | |
249 | {\r | |
250 | MTFTP4_SERVICE *MtftpSb;\r | |
251 | EFI_STATUS Status;\r | |
252 | \r | |
253 | //\r | |
254 | // Directly return if driver is already running.\r | |
255 | //\r | |
256 | Status = gBS->OpenProtocol (\r | |
257 | Controller,\r | |
258 | &gEfiMtftp4ServiceBindingProtocolGuid,\r | |
259 | NULL,\r | |
260 | This->DriverBindingHandle,\r | |
261 | Controller,\r | |
262 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
263 | );\r | |
264 | \r | |
265 | if (Status == EFI_SUCCESS) {\r | |
266 | return EFI_ALREADY_STARTED;\r | |
267 | }\r | |
268 | \r | |
269 | Status = Mtftp4CreateService (Controller, This->DriverBindingHandle, &MtftpSb);\r | |
270 | \r | |
271 | if (EFI_ERROR (Status)) {\r | |
272 | return Status;\r | |
273 | }\r | |
274 | \r | |
275 | Status = gBS->SetTimer (MtftpSb->Timer, TimerPeriodic, TICKS_PER_SECOND);\r | |
276 | \r | |
277 | if (EFI_ERROR (Status)) {\r | |
278 | goto ON_ERROR;\r | |
279 | }\r | |
280 | \r | |
281 | //\r | |
282 | // Install the Mtftp4ServiceBinding Protocol onto Controller\r | |
283 | //\r | |
284 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
285 | &Controller,\r | |
286 | &gEfiMtftp4ServiceBindingProtocolGuid,\r | |
287 | &MtftpSb->ServiceBinding,\r | |
288 | NULL\r | |
289 | );\r | |
290 | \r | |
291 | if (EFI_ERROR (Status)) {\r | |
292 | goto ON_ERROR;\r | |
293 | }\r | |
294 | \r | |
295 | return EFI_SUCCESS;\r | |
296 | \r | |
297 | ON_ERROR:\r | |
298 | Mtftp4CleanService (MtftpSb);\r | |
e48e37fc | 299 | gBS->FreePool (MtftpSb);\r |
772db4bb | 300 | \r |
301 | return Status;\r | |
302 | }\r | |
303 | \r | |
304 | \r | |
305 | /**\r | |
306 | Stop the MTFTP driver on controller. The controller is a UDP\r | |
307 | child handle.\r | |
308 | \r | |
309 | @param This The MTFTP driver binding protocol\r | |
310 | @param Controller The controller to stop\r | |
311 | @param NumberOfChildren The number of children\r | |
312 | @param ChildHandleBuffer The array of the child handle.\r | |
313 | \r | |
314 | @retval EFI_SUCCESS The driver is stopped on the controller.\r | |
315 | @retval EFI_DEVICE_ERROR Failed to stop the driver on the controller.\r | |
316 | \r | |
317 | **/\r | |
318 | EFI_STATUS\r | |
dab714aa | 319 | EFIAPI\r |
772db4bb | 320 | Mtftp4DriverBindingStop (\r |
dab714aa | 321 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
322 | IN EFI_HANDLE Controller,\r | |
323 | IN UINTN NumberOfChildren,\r | |
324 | IN EFI_HANDLE *ChildHandleBuffer\r | |
772db4bb | 325 | )\r |
326 | {\r | |
327 | EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;\r | |
328 | MTFTP4_SERVICE *MtftpSb;\r | |
329 | MTFTP4_PROTOCOL *Instance;\r | |
330 | EFI_HANDLE NicHandle;\r | |
331 | EFI_STATUS Status;\r | |
332 | EFI_TPL OldTpl;\r | |
333 | \r | |
334 | //\r | |
335 | // MTFTP driver opens UDP child, So, Controller is a UDP\r | |
336 | // child handle. Locate the Nic handle first. Then get the\r | |
337 | // MTFTP private data back.\r | |
338 | //\r | |
339 | NicHandle = NetLibGetNicHandle (Controller, &gEfiUdp4ProtocolGuid);\r | |
340 | \r | |
341 | if (NicHandle == NULL) {\r | |
c4a62a12 | 342 | return EFI_DEVICE_ERROR;\r |
772db4bb | 343 | }\r |
344 | \r | |
345 | Status = gBS->OpenProtocol (\r | |
346 | NicHandle,\r | |
347 | &gEfiMtftp4ServiceBindingProtocolGuid,\r | |
348 | (VOID **) &ServiceBinding,\r | |
349 | This->DriverBindingHandle,\r | |
350 | NicHandle,\r | |
351 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
352 | );\r | |
353 | \r | |
354 | if (EFI_ERROR (Status)) {\r | |
355 | return EFI_DEVICE_ERROR;\r | |
356 | }\r | |
357 | \r | |
358 | MtftpSb = MTFTP4_SERVICE_FROM_THIS (ServiceBinding);\r | |
359 | \r | |
360 | if (MtftpSb->InDestory) {\r | |
361 | return EFI_SUCCESS;\r | |
362 | }\r | |
363 | \r | |
e48e37fc | 364 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
772db4bb | 365 | \r |
c4a62a12 | 366 | if (NumberOfChildren == 0) {\r |
772db4bb | 367 | \r |
c4a62a12 | 368 | MtftpSb->InDestory = TRUE;\r |
772db4bb | 369 | \r |
c4a62a12 | 370 | gBS->UninstallProtocolInterface (\r |
371 | NicHandle,\r | |
372 | &gEfiMtftp4ServiceBindingProtocolGuid,\r | |
373 | ServiceBinding\r | |
374 | );\r | |
772db4bb | 375 | \r |
c4a62a12 | 376 | Mtftp4CleanService (MtftpSb);\r |
772db4bb | 377 | \r |
e48e37fc | 378 | gBS->FreePool (MtftpSb);\r |
c4a62a12 | 379 | } else {\r |
772db4bb | 380 | \r |
e48e37fc | 381 | while (!IsListEmpty (&MtftpSb->Children)) {\r |
c4a62a12 | 382 | Instance = NET_LIST_HEAD (&MtftpSb->Children, MTFTP4_PROTOCOL, Link);\r |
383 | Mtftp4ServiceBindingDestroyChild (ServiceBinding, Instance->Handle);\r | |
384 | }\r | |
772db4bb | 385 | \r |
c4a62a12 | 386 | if (MtftpSb->ChildrenNum != 0) {\r |
387 | Status = EFI_DEVICE_ERROR;\r | |
388 | }\r | |
389 | }\r | |
772db4bb | 390 | \r |
e48e37fc | 391 | gBS->RestoreTPL (OldTpl);\r |
772db4bb | 392 | return Status;\r |
393 | }\r | |
394 | \r | |
395 | \r | |
396 | /**\r | |
397 | Initialize a MTFTP protocol instance which is the child of MtftpSb.\r | |
398 | \r | |
399 | @param MtftpSb The MTFTP service binding protocol.\r | |
400 | @param Instance The MTFTP instance to initialize.\r | |
401 | \r | |
772db4bb | 402 | **/\r |
403 | VOID\r | |
404 | Mtftp4InitProtocol (\r | |
dab714aa | 405 | IN MTFTP4_SERVICE *MtftpSb,\r |
406 | OUT MTFTP4_PROTOCOL *Instance\r | |
772db4bb | 407 | )\r |
408 | {\r | |
e48e37fc | 409 | ZeroMem (Instance, sizeof (MTFTP4_PROTOCOL));\r |
772db4bb | 410 | \r |
411 | Instance->Signature = MTFTP4_PROTOCOL_SIGNATURE;\r | |
e48e37fc | 412 | InitializeListHead (&Instance->Link);\r |
687a2e5f | 413 | CopyMem (&Instance->Mtftp4, &gMtftp4ProtocolTemplate, sizeof (Instance->Mtftp4));\r |
772db4bb | 414 | Instance->State = MTFTP4_STATE_UNCONFIGED;\r |
dab714aa | 415 | Instance->InDestory = FALSE;\r |
772db4bb | 416 | Instance->Service = MtftpSb;\r |
417 | \r | |
e48e37fc | 418 | InitializeListHead (&Instance->Blocks);\r |
772db4bb | 419 | }\r |
420 | \r | |
421 | \r | |
422 | /**\r | |
423 | Create a MTFTP child for the service binding instance, then\r | |
424 | install the MTFTP protocol to the ChildHandle.\r | |
425 | \r | |
426 | @param This The MTFTP service binding instance.\r | |
427 | @param ChildHandle The Child handle to install the MTFTP protocol.\r | |
428 | \r | |
429 | @retval EFI_INVALID_PARAMETER The parameter is invalid.\r | |
430 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource for the new child.\r | |
431 | @retval EFI_SUCCESS The child is successfully create.\r | |
432 | \r | |
433 | **/\r | |
434 | EFI_STATUS\r | |
dab714aa | 435 | EFIAPI\r |
772db4bb | 436 | Mtftp4ServiceBindingCreateChild (\r |
437 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
dab714aa | 438 | IN EFI_HANDLE *ChildHandle\r |
772db4bb | 439 | )\r |
440 | {\r | |
441 | MTFTP4_SERVICE *MtftpSb;\r | |
442 | MTFTP4_PROTOCOL *Instance;\r | |
443 | EFI_STATUS Status;\r | |
444 | EFI_TPL OldTpl;\r | |
445 | VOID *Udp4;\r | |
446 | \r | |
447 | if ((This == NULL) || (ChildHandle == NULL)) {\r | |
448 | return EFI_INVALID_PARAMETER;\r | |
449 | }\r | |
450 | \r | |
e48e37fc | 451 | Instance = AllocatePool (sizeof (*Instance));\r |
772db4bb | 452 | \r |
453 | if (Instance == NULL) {\r | |
454 | return EFI_OUT_OF_RESOURCES;\r | |
455 | }\r | |
456 | \r | |
457 | MtftpSb = MTFTP4_SERVICE_FROM_THIS (This);\r | |
458 | \r | |
459 | Mtftp4InitProtocol (MtftpSb, Instance);\r | |
460 | \r | |
461 | Instance->UnicastPort = UdpIoCreatePort (\r | |
462 | MtftpSb->Controller,\r | |
463 | MtftpSb->Image,\r | |
464 | Mtftp4ConfigNullUdp,\r | |
465 | Instance\r | |
466 | );\r | |
467 | \r | |
468 | if (Instance->UnicastPort == NULL) {\r | |
e48e37fc | 469 | gBS->FreePool (Instance);\r |
772db4bb | 470 | return EFI_OUT_OF_RESOURCES;\r |
471 | }\r | |
472 | \r | |
473 | //\r | |
474 | // Install the MTFTP protocol onto ChildHandle\r | |
475 | //\r | |
476 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
477 | ChildHandle,\r | |
478 | &gEfiMtftp4ProtocolGuid,\r | |
479 | &Instance->Mtftp4,\r | |
480 | NULL\r | |
481 | );\r | |
482 | \r | |
483 | if (EFI_ERROR (Status)) {\r | |
484 | goto ON_ERROR;\r | |
485 | }\r | |
486 | \r | |
487 | Instance->Handle = *ChildHandle;\r | |
488 | \r | |
489 | //\r | |
490 | // Open the Udp4 protocol BY_CHILD.\r | |
491 | //\r | |
492 | Status = gBS->OpenProtocol (\r | |
493 | MtftpSb->ConnectUdp->UdpHandle,\r | |
494 | &gEfiUdp4ProtocolGuid,\r | |
495 | (VOID **) &Udp4,\r | |
496 | gMtftp4DriverBinding.DriverBindingHandle,\r | |
497 | Instance->Handle,\r | |
498 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
499 | );\r | |
500 | if (EFI_ERROR (Status)) {\r | |
501 | gBS->UninstallMultipleProtocolInterfaces (\r | |
502 | Instance->Handle,\r | |
503 | &gEfiMtftp4ProtocolGuid,\r | |
504 | &Instance->Mtftp4,\r | |
505 | NULL\r | |
506 | );\r | |
507 | \r | |
508 | goto ON_ERROR;\r | |
509 | }\r | |
510 | \r | |
511 | //\r | |
512 | // Add it to the parent's child list.\r | |
513 | //\r | |
e48e37fc | 514 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
772db4bb | 515 | \r |
e48e37fc | 516 | InsertTailList (&MtftpSb->Children, &Instance->Link);\r |
772db4bb | 517 | MtftpSb->ChildrenNum++;\r |
518 | \r | |
e48e37fc | 519 | gBS->RestoreTPL (OldTpl);\r |
772db4bb | 520 | \r |
521 | ON_ERROR:\r | |
522 | \r | |
523 | if (EFI_ERROR (Status)) {\r | |
524 | UdpIoFreePort (Instance->UnicastPort);\r | |
e48e37fc | 525 | gBS->FreePool (Instance);\r |
772db4bb | 526 | }\r |
527 | \r | |
528 | return Status;\r | |
529 | }\r | |
530 | \r | |
531 | \r | |
532 | /**\r | |
533 | Destory one of the service binding's child.\r | |
534 | \r | |
535 | @param This The service binding instance\r | |
536 | @param ChildHandle The child handle to destory\r | |
537 | \r | |
538 | @retval EFI_INVALID_PARAMETER The parameter is invaid.\r | |
539 | @retval EFI_UNSUPPORTED The child may have already been destoried.\r | |
540 | @retval EFI_SUCCESS The child is destoried and removed from the\r | |
541 | parent's child list.\r | |
542 | \r | |
543 | **/\r | |
544 | EFI_STATUS\r | |
dab714aa | 545 | EFIAPI\r |
772db4bb | 546 | Mtftp4ServiceBindingDestroyChild (\r |
547 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
548 | IN EFI_HANDLE ChildHandle\r | |
549 | )\r | |
550 | {\r | |
551 | MTFTP4_SERVICE *MtftpSb;\r | |
552 | MTFTP4_PROTOCOL *Instance;\r | |
553 | EFI_MTFTP4_PROTOCOL *Mtftp4;\r | |
554 | EFI_STATUS Status;\r | |
555 | EFI_TPL OldTpl;\r | |
556 | \r | |
557 | if ((This == NULL) || (ChildHandle == NULL)) {\r | |
558 | return EFI_INVALID_PARAMETER;\r | |
559 | }\r | |
560 | \r | |
561 | //\r | |
562 | // Retrieve the private context data structures\r | |
563 | //\r | |
564 | Status = gBS->OpenProtocol (\r | |
565 | ChildHandle,\r | |
566 | &gEfiMtftp4ProtocolGuid,\r | |
567 | (VOID **) &Mtftp4,\r | |
568 | gMtftp4DriverBinding.DriverBindingHandle,\r | |
569 | ChildHandle,\r | |
570 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
571 | );\r | |
572 | \r | |
573 | if (EFI_ERROR (Status)) {\r | |
574 | return EFI_UNSUPPORTED;\r | |
575 | }\r | |
576 | \r | |
577 | Instance = MTFTP4_PROTOCOL_FROM_THIS (Mtftp4);\r | |
578 | MtftpSb = MTFTP4_SERVICE_FROM_THIS (This);\r | |
579 | \r | |
580 | if (Instance->Service != MtftpSb) {\r | |
581 | return EFI_INVALID_PARAMETER;\r | |
582 | }\r | |
583 | \r | |
dab714aa | 584 | if (Instance->InDestory) {\r |
772db4bb | 585 | return EFI_SUCCESS;\r |
586 | }\r | |
587 | \r | |
dab714aa | 588 | Instance->InDestory = TRUE;\r |
772db4bb | 589 | \r |
590 | //\r | |
591 | // Close the Udp4 protocol.\r | |
592 | //\r | |
593 | gBS->CloseProtocol (\r | |
594 | MtftpSb->ConnectUdp->UdpHandle,\r | |
595 | &gEfiUdp4ProtocolGuid,\r | |
596 | gMtftp4DriverBinding.DriverBindingHandle,\r | |
597 | ChildHandle\r | |
598 | );\r | |
599 | \r | |
600 | //\r | |
601 | // Uninstall the MTFTP4 protocol first to enable a top down destruction.\r | |
602 | //\r | |
603 | Status = gBS->UninstallProtocolInterface (\r | |
604 | ChildHandle,\r | |
605 | &gEfiMtftp4ProtocolGuid,\r | |
606 | Mtftp4\r | |
607 | );\r | |
608 | \r | |
609 | if (EFI_ERROR (Status)) {\r | |
dab714aa | 610 | Instance->InDestory = FALSE;\r |
772db4bb | 611 | return Status;\r |
612 | }\r | |
613 | \r | |
e48e37fc | 614 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
772db4bb | 615 | \r |
616 | Mtftp4CleanOperation (Instance, EFI_DEVICE_ERROR);\r | |
617 | UdpIoFreePort (Instance->UnicastPort);\r | |
618 | \r | |
e48e37fc | 619 | RemoveEntryList (&Instance->Link);\r |
772db4bb | 620 | MtftpSb->ChildrenNum--;\r |
621 | \r | |
e48e37fc | 622 | gBS->RestoreTPL (OldTpl);\r |
772db4bb | 623 | \r |
e48e37fc | 624 | gBS->FreePool (Instance);\r |
772db4bb | 625 | return EFI_SUCCESS;\r |
626 | }\r |