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772db4bb | 1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2006 - 2007, Intel Corporation\r | |
4 | All rights reserved. This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | Mtftp4Driver.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | \r | |
19 | **/\r | |
20 | \r | |
21 | #include "Mtftp4Impl.h"\r | |
22 | \r | |
23 | EFI_DRIVER_BINDING_PROTOCOL gMtftp4DriverBinding = {\r | |
24 | Mtftp4DriverBindingSupported,\r | |
25 | Mtftp4DriverBindingStart,\r | |
26 | Mtftp4DriverBindingStop,\r | |
27 | 0xa,\r | |
28 | NULL,\r | |
29 | NULL\r | |
30 | };\r | |
31 | \r | |
32 | EFI_SERVICE_BINDING_PROTOCOL gMtftp4ServiceBindingTemplete = {\r | |
33 | Mtftp4ServiceBindingCreateChild,\r | |
34 | Mtftp4ServiceBindingDestroyChild\r | |
35 | };\r | |
36 | \r | |
37 | //@MT: EFI_DRIVER_ENTRY_POINT (Mtftp4DriverEntryPoint)\r | |
38 | \r | |
39 | EFI_STATUS\r | |
40 | EFIAPI\r | |
41 | Mtftp4DriverEntryPoint (\r | |
42 | IN EFI_HANDLE ImageHandle,\r | |
43 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
44 | )\r | |
45 | /*++\r | |
46 | \r | |
47 | Routine Description:\r | |
48 | \r | |
49 | The driver entry point which installs multiple protocols to the ImageHandle.\r | |
50 | \r | |
51 | Arguments:\r | |
52 | \r | |
53 | ImageHandle - The MTFTP's image handle\r | |
54 | SystemTable - The system table\r | |
55 | \r | |
56 | Returns:\r | |
57 | \r | |
58 | EFI_SUCCESS - The handles are successfully installed on the image. Otherwise\r | |
59 | some EFI_ERROR.\r | |
60 | \r | |
61 | --*/\r | |
62 | {\r | |
63 | return NetLibInstallAllDriverProtocols (\r | |
64 | ImageHandle,\r | |
65 | SystemTable,\r | |
66 | &gMtftp4DriverBinding,\r | |
67 | ImageHandle,\r | |
68 | &gMtftp4ComponentName,\r | |
69 | NULL,\r | |
70 | NULL\r | |
71 | );\r | |
72 | }\r | |
73 | \r | |
74 | \r | |
75 | /**\r | |
76 | Test whether MTFTP driver support this controller.\r | |
77 | \r | |
78 | @param This The MTFTP driver binding instance\r | |
79 | @param Controller The controller to test\r | |
80 | @param RemainingDevicePath The remaining device path\r | |
81 | \r | |
82 | @retval EFI_SUCCESS The controller has UDP service binding protocol\r | |
83 | installed, MTFTP can support it.\r | |
84 | @retval Others MTFTP can't support the controller.\r | |
85 | \r | |
86 | **/\r | |
87 | EFI_STATUS\r | |
88 | Mtftp4DriverBindingSupported (\r | |
89 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
90 | IN EFI_HANDLE Controller,\r | |
91 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
92 | )\r | |
93 | {\r | |
94 | EFI_STATUS Status;\r | |
95 | \r | |
96 | Status = gBS->OpenProtocol (\r | |
97 | Controller,\r | |
98 | &gEfiUdp4ServiceBindingProtocolGuid,\r | |
99 | NULL,\r | |
100 | This->DriverBindingHandle,\r | |
101 | Controller,\r | |
102 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
103 | );\r | |
104 | \r | |
105 | return Status;\r | |
106 | }\r | |
107 | \r | |
108 | \r | |
109 | /**\r | |
110 | Config a NULL UDP that is used to keep the connection between UDP\r | |
111 | and MTFTP. Just leave the Udp child unconfigured. When UDP is\r | |
112 | unloaded, MTFTP will be informed with DriverBinding Stop.\r | |
113 | \r | |
114 | @param UdpIo The UDP port to configure\r | |
115 | @param Context The opaque parameter to the callback\r | |
116 | \r | |
117 | @retval EFI_SUCCESS It always return EFI_SUCCESS directly.\r | |
118 | \r | |
119 | **/\r | |
120 | EFI_STATUS\r | |
121 | Mtftp4ConfigNullUdp (\r | |
122 | IN UDP_IO_PORT *UdpIo,\r | |
123 | IN VOID *Context\r | |
124 | )\r | |
125 | {\r | |
126 | return EFI_SUCCESS;\r | |
127 | }\r | |
128 | \r | |
129 | \r | |
130 | /**\r | |
131 | Create then initialize a MTFTP service binding instance.\r | |
132 | \r | |
133 | @param Controller The controller to install the MTFTP service\r | |
134 | binding on\r | |
135 | @param Image The driver binding image of the MTFTP driver\r | |
136 | @param Service The variable to receive the created service\r | |
137 | binding instance.\r | |
138 | \r | |
139 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to create the instance\r | |
140 | @retval EFI_DEVICE_ERROR Failed to create a NULL UDP port to keep\r | |
141 | connection with UDP.\r | |
142 | @retval EFI_SUCCESS The service instance is created for the\r | |
143 | controller.\r | |
144 | \r | |
145 | **/\r | |
146 | EFI_STATUS\r | |
147 | Mtftp4CreateService (\r | |
148 | IN EFI_HANDLE Controller,\r | |
149 | IN EFI_HANDLE Image,\r | |
150 | OUT MTFTP4_SERVICE **Service\r | |
151 | )\r | |
152 | {\r | |
153 | MTFTP4_SERVICE *MtftpSb;\r | |
154 | EFI_STATUS Status;\r | |
155 | \r | |
156 | *Service = NULL;\r | |
157 | MtftpSb = NetAllocatePool (sizeof (MTFTP4_SERVICE));\r | |
158 | \r | |
159 | if (MtftpSb == NULL) {\r | |
160 | return EFI_OUT_OF_RESOURCES;\r | |
161 | }\r | |
162 | \r | |
163 | MtftpSb->Signature = MTFTP4_SERVICE_SIGNATURE;\r | |
164 | MtftpSb->ServiceBinding = gMtftp4ServiceBindingTemplete;\r | |
165 | MtftpSb->InDestory = FALSE;\r | |
166 | MtftpSb->ChildrenNum = 0;\r | |
167 | NetListInit (&MtftpSb->Children);\r | |
168 | \r | |
169 | MtftpSb->Timer = NULL;\r | |
170 | MtftpSb->TimerToGetMap = NULL;\r | |
171 | MtftpSb->Controller = Controller;\r | |
172 | MtftpSb->Image = Image;\r | |
173 | MtftpSb->ConnectUdp = NULL;\r | |
174 | \r | |
175 | //\r | |
176 | // Create the timer and a udp to be notified when UDP is uninstalled\r | |
177 | //\r | |
178 | Status = gBS->CreateEvent (\r | |
179 | EVT_NOTIFY_SIGNAL | EVT_TIMER,\r | |
180 | TPL_CALLBACK,\r | |
181 | Mtftp4OnTimerTick,\r | |
182 | MtftpSb,\r | |
183 | &MtftpSb->Timer\r | |
184 | );\r | |
185 | \r | |
186 | if (EFI_ERROR (Status)) {\r | |
187 | NetFreePool (MtftpSb);\r | |
188 | return Status;\r | |
189 | }\r | |
190 | \r | |
191 | //\r | |
192 | // Create the timer used to time out the procedure which is used to\r | |
193 | // get the default IP address.\r | |
194 | //\r | |
195 | Status = gBS->CreateEvent (\r | |
196 | EVT_TIMER,\r | |
197 | TPL_CALLBACK,\r | |
198 | NULL,\r | |
199 | NULL,\r | |
200 | &MtftpSb->TimerToGetMap\r | |
201 | );\r | |
202 | if (EFI_ERROR (Status)) {\r | |
203 | gBS->CloseEvent (MtftpSb->Timer);\r | |
204 | NetFreePool (MtftpSb);\r | |
205 | return Status;\r | |
206 | }\r | |
207 | \r | |
208 | MtftpSb->ConnectUdp = UdpIoCreatePort (Controller, Image, Mtftp4ConfigNullUdp, NULL);\r | |
209 | \r | |
210 | if (MtftpSb->ConnectUdp == NULL) {\r | |
211 | gBS->CloseEvent (MtftpSb->TimerToGetMap);\r | |
212 | gBS->CloseEvent (MtftpSb->Timer);\r | |
213 | NetFreePool (MtftpSb);\r | |
214 | return EFI_DEVICE_ERROR;\r | |
215 | }\r | |
216 | \r | |
217 | *Service = MtftpSb;\r | |
218 | return EFI_SUCCESS;\r | |
219 | }\r | |
220 | \r | |
221 | \r | |
222 | /**\r | |
223 | Release all the resource used the MTFTP service binding instance.\r | |
224 | \r | |
225 | @param MtftpSb The MTFTP service binding instance.\r | |
226 | \r | |
227 | @return None\r | |
228 | \r | |
229 | **/\r | |
230 | VOID\r | |
231 | Mtftp4CleanService (\r | |
232 | IN MTFTP4_SERVICE *MtftpSb\r | |
233 | )\r | |
234 | {\r | |
235 | UdpIoFreePort (MtftpSb->ConnectUdp);\r | |
236 | gBS->CloseEvent (MtftpSb->TimerToGetMap);\r | |
237 | gBS->CloseEvent (MtftpSb->Timer);\r | |
238 | }\r | |
239 | \r | |
240 | \r | |
241 | /**\r | |
242 | Start the MTFTP driver on this controller. MTFTP driver will\r | |
243 | install a MTFTP SERVICE BINDING protocol on the supported\r | |
244 | controller, which can be used to create/destroy MTFTP children.\r | |
245 | \r | |
246 | @param This The MTFTP driver binding protocol.\r | |
247 | @param Controller The controller to manage.\r | |
248 | @param RemainingDevicePath Remaining device path.\r | |
249 | \r | |
250 | @retval EFI_ALREADY_STARTED The MTFTP service binding protocol has been\r | |
251 | started on the controller.\r | |
252 | @retval EFI_SUCCESS The MTFTP service binding is installed on the\r | |
253 | controller.\r | |
254 | \r | |
255 | **/\r | |
256 | EFI_STATUS\r | |
257 | Mtftp4DriverBindingStart (\r | |
258 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
259 | IN EFI_HANDLE Controller,\r | |
260 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
261 | )\r | |
262 | {\r | |
263 | MTFTP4_SERVICE *MtftpSb;\r | |
264 | EFI_STATUS Status;\r | |
265 | \r | |
266 | //\r | |
267 | // Directly return if driver is already running.\r | |
268 | //\r | |
269 | Status = gBS->OpenProtocol (\r | |
270 | Controller,\r | |
271 | &gEfiMtftp4ServiceBindingProtocolGuid,\r | |
272 | NULL,\r | |
273 | This->DriverBindingHandle,\r | |
274 | Controller,\r | |
275 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
276 | );\r | |
277 | \r | |
278 | if (Status == EFI_SUCCESS) {\r | |
279 | return EFI_ALREADY_STARTED;\r | |
280 | }\r | |
281 | \r | |
282 | Status = Mtftp4CreateService (Controller, This->DriverBindingHandle, &MtftpSb);\r | |
283 | \r | |
284 | if (EFI_ERROR (Status)) {\r | |
285 | return Status;\r | |
286 | }\r | |
287 | \r | |
288 | Status = gBS->SetTimer (MtftpSb->Timer, TimerPeriodic, TICKS_PER_SECOND);\r | |
289 | \r | |
290 | if (EFI_ERROR (Status)) {\r | |
291 | goto ON_ERROR;\r | |
292 | }\r | |
293 | \r | |
294 | //\r | |
295 | // Install the Mtftp4ServiceBinding Protocol onto Controller\r | |
296 | //\r | |
297 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
298 | &Controller,\r | |
299 | &gEfiMtftp4ServiceBindingProtocolGuid,\r | |
300 | &MtftpSb->ServiceBinding,\r | |
301 | NULL\r | |
302 | );\r | |
303 | \r | |
304 | if (EFI_ERROR (Status)) {\r | |
305 | goto ON_ERROR;\r | |
306 | }\r | |
307 | \r | |
308 | return EFI_SUCCESS;\r | |
309 | \r | |
310 | ON_ERROR:\r | |
311 | Mtftp4CleanService (MtftpSb);\r | |
312 | NetFreePool (MtftpSb);\r | |
313 | \r | |
314 | return Status;\r | |
315 | }\r | |
316 | \r | |
317 | \r | |
318 | /**\r | |
319 | Stop the MTFTP driver on controller. The controller is a UDP\r | |
320 | child handle.\r | |
321 | \r | |
322 | @param This The MTFTP driver binding protocol\r | |
323 | @param Controller The controller to stop\r | |
324 | @param NumberOfChildren The number of children\r | |
325 | @param ChildHandleBuffer The array of the child handle.\r | |
326 | \r | |
327 | @retval EFI_SUCCESS The driver is stopped on the controller.\r | |
328 | @retval EFI_DEVICE_ERROR Failed to stop the driver on the controller.\r | |
329 | \r | |
330 | **/\r | |
331 | EFI_STATUS\r | |
332 | Mtftp4DriverBindingStop (\r | |
333 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
334 | IN EFI_HANDLE Controller,\r | |
335 | IN UINTN NumberOfChildren,\r | |
336 | IN EFI_HANDLE *ChildHandleBuffer\r | |
337 | )\r | |
338 | {\r | |
339 | EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;\r | |
340 | MTFTP4_SERVICE *MtftpSb;\r | |
341 | MTFTP4_PROTOCOL *Instance;\r | |
342 | EFI_HANDLE NicHandle;\r | |
343 | EFI_STATUS Status;\r | |
344 | EFI_TPL OldTpl;\r | |
345 | \r | |
346 | //\r | |
347 | // MTFTP driver opens UDP child, So, Controller is a UDP\r | |
348 | // child handle. Locate the Nic handle first. Then get the\r | |
349 | // MTFTP private data back.\r | |
350 | //\r | |
351 | NicHandle = NetLibGetNicHandle (Controller, &gEfiUdp4ProtocolGuid);\r | |
352 | \r | |
353 | if (NicHandle == NULL) {\r | |
354 | return EFI_SUCCESS;\r | |
355 | }\r | |
356 | \r | |
357 | Status = gBS->OpenProtocol (\r | |
358 | NicHandle,\r | |
359 | &gEfiMtftp4ServiceBindingProtocolGuid,\r | |
360 | (VOID **) &ServiceBinding,\r | |
361 | This->DriverBindingHandle,\r | |
362 | NicHandle,\r | |
363 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
364 | );\r | |
365 | \r | |
366 | if (EFI_ERROR (Status)) {\r | |
367 | return EFI_DEVICE_ERROR;\r | |
368 | }\r | |
369 | \r | |
370 | MtftpSb = MTFTP4_SERVICE_FROM_THIS (ServiceBinding);\r | |
371 | \r | |
372 | if (MtftpSb->InDestory) {\r | |
373 | return EFI_SUCCESS;\r | |
374 | }\r | |
375 | \r | |
376 | OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);\r | |
377 | MtftpSb->InDestory = TRUE;\r | |
378 | \r | |
379 | while (!NetListIsEmpty (&MtftpSb->Children)) {\r | |
380 | Instance = NET_LIST_HEAD (&MtftpSb->Children, MTFTP4_PROTOCOL, Link);\r | |
381 | Mtftp4ServiceBindingDestroyChild (ServiceBinding, Instance->Handle);\r | |
382 | }\r | |
383 | \r | |
384 | if (MtftpSb->ChildrenNum != 0) {\r | |
385 | Status = EFI_DEVICE_ERROR;\r | |
386 | goto ON_ERROR;\r | |
387 | }\r | |
388 | \r | |
389 | Status = gBS->UninstallProtocolInterface (\r | |
390 | NicHandle,\r | |
391 | &gEfiMtftp4ServiceBindingProtocolGuid,\r | |
392 | ServiceBinding\r | |
393 | );\r | |
394 | \r | |
395 | if (EFI_ERROR (Status)) {\r | |
396 | goto ON_ERROR;\r | |
397 | }\r | |
398 | \r | |
399 | Mtftp4CleanService (MtftpSb);\r | |
400 | NetFreePool (MtftpSb);\r | |
401 | \r | |
402 | NET_RESTORE_TPL (OldTpl);\r | |
403 | return EFI_SUCCESS;\r | |
404 | \r | |
405 | ON_ERROR:\r | |
406 | MtftpSb->InDestory = FALSE;\r | |
407 | \r | |
408 | NET_RESTORE_TPL (OldTpl);\r | |
409 | return Status;\r | |
410 | }\r | |
411 | \r | |
412 | \r | |
413 | /**\r | |
414 | Initialize a MTFTP protocol instance which is the child of MtftpSb.\r | |
415 | \r | |
416 | @param MtftpSb The MTFTP service binding protocol.\r | |
417 | @param Instance The MTFTP instance to initialize.\r | |
418 | \r | |
419 | @return None\r | |
420 | \r | |
421 | **/\r | |
422 | VOID\r | |
423 | Mtftp4InitProtocol (\r | |
424 | IN MTFTP4_SERVICE *MtftpSb,\r | |
425 | IN MTFTP4_PROTOCOL *Instance\r | |
426 | )\r | |
427 | {\r | |
428 | NetZeroMem (Instance, sizeof (MTFTP4_PROTOCOL));\r | |
429 | \r | |
430 | Instance->Signature = MTFTP4_PROTOCOL_SIGNATURE;\r | |
431 | NetListInit (&Instance->Link);\r | |
432 | CopyMem (&Instance->Mtftp4, &gMtftp4ProtocolTemplate, sizeof (EFI_MTFTP4_PROTOCOL));\r | |
433 | Instance->State = MTFTP4_STATE_UNCONFIGED;\r | |
434 | Instance->Indestory = FALSE;\r | |
435 | Instance->Service = MtftpSb;\r | |
436 | \r | |
437 | NetListInit (&Instance->Blocks);\r | |
438 | }\r | |
439 | \r | |
440 | \r | |
441 | /**\r | |
442 | Create a MTFTP child for the service binding instance, then\r | |
443 | install the MTFTP protocol to the ChildHandle.\r | |
444 | \r | |
445 | @param This The MTFTP service binding instance.\r | |
446 | @param ChildHandle The Child handle to install the MTFTP protocol.\r | |
447 | \r | |
448 | @retval EFI_INVALID_PARAMETER The parameter is invalid.\r | |
449 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource for the new child.\r | |
450 | @retval EFI_SUCCESS The child is successfully create.\r | |
451 | \r | |
452 | **/\r | |
453 | EFI_STATUS\r | |
454 | Mtftp4ServiceBindingCreateChild (\r | |
455 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
456 | IN OUT EFI_HANDLE *ChildHandle\r | |
457 | )\r | |
458 | {\r | |
459 | MTFTP4_SERVICE *MtftpSb;\r | |
460 | MTFTP4_PROTOCOL *Instance;\r | |
461 | EFI_STATUS Status;\r | |
462 | EFI_TPL OldTpl;\r | |
463 | VOID *Udp4;\r | |
464 | \r | |
465 | if ((This == NULL) || (ChildHandle == NULL)) {\r | |
466 | return EFI_INVALID_PARAMETER;\r | |
467 | }\r | |
468 | \r | |
469 | Instance = NetAllocatePool (sizeof (*Instance));\r | |
470 | \r | |
471 | if (Instance == NULL) {\r | |
472 | return EFI_OUT_OF_RESOURCES;\r | |
473 | }\r | |
474 | \r | |
475 | MtftpSb = MTFTP4_SERVICE_FROM_THIS (This);\r | |
476 | \r | |
477 | Mtftp4InitProtocol (MtftpSb, Instance);\r | |
478 | \r | |
479 | Instance->UnicastPort = UdpIoCreatePort (\r | |
480 | MtftpSb->Controller,\r | |
481 | MtftpSb->Image,\r | |
482 | Mtftp4ConfigNullUdp,\r | |
483 | Instance\r | |
484 | );\r | |
485 | \r | |
486 | if (Instance->UnicastPort == NULL) {\r | |
487 | NetFreePool (Instance);\r | |
488 | return EFI_OUT_OF_RESOURCES;\r | |
489 | }\r | |
490 | \r | |
491 | //\r | |
492 | // Install the MTFTP protocol onto ChildHandle\r | |
493 | //\r | |
494 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
495 | ChildHandle,\r | |
496 | &gEfiMtftp4ProtocolGuid,\r | |
497 | &Instance->Mtftp4,\r | |
498 | NULL\r | |
499 | );\r | |
500 | \r | |
501 | if (EFI_ERROR (Status)) {\r | |
502 | goto ON_ERROR;\r | |
503 | }\r | |
504 | \r | |
505 | Instance->Handle = *ChildHandle;\r | |
506 | \r | |
507 | //\r | |
508 | // Open the Udp4 protocol BY_CHILD.\r | |
509 | //\r | |
510 | Status = gBS->OpenProtocol (\r | |
511 | MtftpSb->ConnectUdp->UdpHandle,\r | |
512 | &gEfiUdp4ProtocolGuid,\r | |
513 | (VOID **) &Udp4,\r | |
514 | gMtftp4DriverBinding.DriverBindingHandle,\r | |
515 | Instance->Handle,\r | |
516 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
517 | );\r | |
518 | if (EFI_ERROR (Status)) {\r | |
519 | gBS->UninstallMultipleProtocolInterfaces (\r | |
520 | Instance->Handle,\r | |
521 | &gEfiMtftp4ProtocolGuid,\r | |
522 | &Instance->Mtftp4,\r | |
523 | NULL\r | |
524 | );\r | |
525 | \r | |
526 | goto ON_ERROR;\r | |
527 | }\r | |
528 | \r | |
529 | //\r | |
530 | // Add it to the parent's child list.\r | |
531 | //\r | |
532 | OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);\r | |
533 | \r | |
534 | NetListInsertTail (&MtftpSb->Children, &Instance->Link);\r | |
535 | MtftpSb->ChildrenNum++;\r | |
536 | \r | |
537 | NET_RESTORE_TPL (OldTpl);\r | |
538 | \r | |
539 | ON_ERROR:\r | |
540 | \r | |
541 | if (EFI_ERROR (Status)) {\r | |
542 | UdpIoFreePort (Instance->UnicastPort);\r | |
543 | NetFreePool (Instance);\r | |
544 | }\r | |
545 | \r | |
546 | return Status;\r | |
547 | }\r | |
548 | \r | |
549 | \r | |
550 | /**\r | |
551 | Destory one of the service binding's child.\r | |
552 | \r | |
553 | @param This The service binding instance\r | |
554 | @param ChildHandle The child handle to destory\r | |
555 | \r | |
556 | @retval EFI_INVALID_PARAMETER The parameter is invaid.\r | |
557 | @retval EFI_UNSUPPORTED The child may have already been destoried.\r | |
558 | @retval EFI_SUCCESS The child is destoried and removed from the\r | |
559 | parent's child list.\r | |
560 | \r | |
561 | **/\r | |
562 | EFI_STATUS\r | |
563 | Mtftp4ServiceBindingDestroyChild (\r | |
564 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
565 | IN EFI_HANDLE ChildHandle\r | |
566 | )\r | |
567 | {\r | |
568 | MTFTP4_SERVICE *MtftpSb;\r | |
569 | MTFTP4_PROTOCOL *Instance;\r | |
570 | EFI_MTFTP4_PROTOCOL *Mtftp4;\r | |
571 | EFI_STATUS Status;\r | |
572 | EFI_TPL OldTpl;\r | |
573 | \r | |
574 | if ((This == NULL) || (ChildHandle == NULL)) {\r | |
575 | return EFI_INVALID_PARAMETER;\r | |
576 | }\r | |
577 | \r | |
578 | //\r | |
579 | // Retrieve the private context data structures\r | |
580 | //\r | |
581 | Status = gBS->OpenProtocol (\r | |
582 | ChildHandle,\r | |
583 | &gEfiMtftp4ProtocolGuid,\r | |
584 | (VOID **) &Mtftp4,\r | |
585 | gMtftp4DriverBinding.DriverBindingHandle,\r | |
586 | ChildHandle,\r | |
587 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
588 | );\r | |
589 | \r | |
590 | if (EFI_ERROR (Status)) {\r | |
591 | return EFI_UNSUPPORTED;\r | |
592 | }\r | |
593 | \r | |
594 | Instance = MTFTP4_PROTOCOL_FROM_THIS (Mtftp4);\r | |
595 | MtftpSb = MTFTP4_SERVICE_FROM_THIS (This);\r | |
596 | \r | |
597 | if (Instance->Service != MtftpSb) {\r | |
598 | return EFI_INVALID_PARAMETER;\r | |
599 | }\r | |
600 | \r | |
601 | if (Instance->Indestory) {\r | |
602 | return EFI_SUCCESS;\r | |
603 | }\r | |
604 | \r | |
605 | Instance->Indestory = TRUE;\r | |
606 | \r | |
607 | //\r | |
608 | // Close the Udp4 protocol.\r | |
609 | //\r | |
610 | gBS->CloseProtocol (\r | |
611 | MtftpSb->ConnectUdp->UdpHandle,\r | |
612 | &gEfiUdp4ProtocolGuid,\r | |
613 | gMtftp4DriverBinding.DriverBindingHandle,\r | |
614 | ChildHandle\r | |
615 | );\r | |
616 | \r | |
617 | //\r | |
618 | // Uninstall the MTFTP4 protocol first to enable a top down destruction.\r | |
619 | //\r | |
620 | Status = gBS->UninstallProtocolInterface (\r | |
621 | ChildHandle,\r | |
622 | &gEfiMtftp4ProtocolGuid,\r | |
623 | Mtftp4\r | |
624 | );\r | |
625 | \r | |
626 | if (EFI_ERROR (Status)) {\r | |
627 | Instance->Indestory = FALSE;\r | |
628 | return Status;\r | |
629 | }\r | |
630 | \r | |
631 | OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);\r | |
632 | \r | |
633 | Mtftp4CleanOperation (Instance, EFI_DEVICE_ERROR);\r | |
634 | UdpIoFreePort (Instance->UnicastPort);\r | |
635 | \r | |
636 | NetListRemoveEntry (&Instance->Link);\r | |
637 | MtftpSb->ChildrenNum--;\r | |
638 | \r | |
639 | NET_RESTORE_TPL (OldTpl);\r | |
640 | \r | |
641 | NetFreePool (Instance);\r | |
642 | return EFI_SUCCESS;\r | |
643 | }\r |