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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 | |
772db4bb | 37 | EFI_STATUS\r |
38 | EFIAPI\r | |
39 | Mtftp4DriverEntryPoint (\r | |
40 | IN EFI_HANDLE ImageHandle,\r | |
41 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
42 | )\r | |
43 | /*++\r | |
44 | \r | |
45 | Routine Description:\r | |
46 | \r | |
47 | The driver entry point which installs multiple protocols to the ImageHandle.\r | |
48 | \r | |
49 | Arguments:\r | |
50 | \r | |
51 | ImageHandle - The MTFTP's image handle\r | |
52 | SystemTable - The system table\r | |
53 | \r | |
54 | Returns:\r | |
55 | \r | |
56 | EFI_SUCCESS - The handles are successfully installed on the image. Otherwise\r | |
57 | some EFI_ERROR.\r | |
58 | \r | |
59 | --*/\r | |
60 | {\r | |
83cbd279 | 61 | return EfiLibInstallDriverBindingComponentName2 (\r |
772db4bb | 62 | ImageHandle,\r |
63 | SystemTable,\r | |
64 | &gMtftp4DriverBinding,\r | |
65 | ImageHandle,\r | |
66 | &gMtftp4ComponentName,\r | |
83cbd279 | 67 | &gMtftp4ComponentName2\r |
772db4bb | 68 | );\r |
69 | }\r | |
70 | \r | |
71 | \r | |
72 | /**\r | |
73 | Test whether MTFTP driver support this controller.\r | |
74 | \r | |
75 | @param This The MTFTP driver binding instance\r | |
76 | @param Controller The controller to test\r | |
77 | @param RemainingDevicePath The remaining device path\r | |
78 | \r | |
79 | @retval EFI_SUCCESS The controller has UDP service binding protocol\r | |
80 | installed, MTFTP can support it.\r | |
81 | @retval Others MTFTP can't support the controller.\r | |
82 | \r | |
83 | **/\r | |
84 | EFI_STATUS\r | |
85 | Mtftp4DriverBindingSupported (\r | |
86 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
87 | IN EFI_HANDLE Controller,\r | |
88 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
89 | )\r | |
90 | {\r | |
91 | EFI_STATUS Status;\r | |
92 | \r | |
93 | Status = gBS->OpenProtocol (\r | |
94 | Controller,\r | |
95 | &gEfiUdp4ServiceBindingProtocolGuid,\r | |
96 | NULL,\r | |
97 | This->DriverBindingHandle,\r | |
98 | Controller,\r | |
99 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
100 | );\r | |
101 | \r | |
102 | return Status;\r | |
103 | }\r | |
104 | \r | |
105 | \r | |
106 | /**\r | |
107 | Config a NULL UDP that is used to keep the connection between UDP\r | |
108 | and MTFTP. Just leave the Udp child unconfigured. When UDP is\r | |
109 | unloaded, MTFTP will be informed with DriverBinding Stop.\r | |
110 | \r | |
111 | @param UdpIo The UDP port to configure\r | |
112 | @param Context The opaque parameter to the callback\r | |
113 | \r | |
114 | @retval EFI_SUCCESS It always return EFI_SUCCESS directly.\r | |
115 | \r | |
116 | **/\r | |
117 | EFI_STATUS\r | |
118 | Mtftp4ConfigNullUdp (\r | |
119 | IN UDP_IO_PORT *UdpIo,\r | |
120 | IN VOID *Context\r | |
121 | )\r | |
122 | {\r | |
123 | return EFI_SUCCESS;\r | |
124 | }\r | |
125 | \r | |
126 | \r | |
127 | /**\r | |
128 | Create then initialize a MTFTP service binding instance.\r | |
129 | \r | |
130 | @param Controller The controller to install the MTFTP service\r | |
131 | binding on\r | |
132 | @param Image The driver binding image of the MTFTP driver\r | |
133 | @param Service The variable to receive the created service\r | |
134 | binding instance.\r | |
135 | \r | |
136 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to create the instance\r | |
137 | @retval EFI_DEVICE_ERROR Failed to create a NULL UDP port to keep\r | |
138 | connection with UDP.\r | |
139 | @retval EFI_SUCCESS The service instance is created for the\r | |
140 | controller.\r | |
141 | \r | |
142 | **/\r | |
143 | EFI_STATUS\r | |
144 | Mtftp4CreateService (\r | |
145 | IN EFI_HANDLE Controller,\r | |
146 | IN EFI_HANDLE Image,\r | |
147 | OUT MTFTP4_SERVICE **Service\r | |
148 | )\r | |
149 | {\r | |
150 | MTFTP4_SERVICE *MtftpSb;\r | |
151 | EFI_STATUS Status;\r | |
152 | \r | |
153 | *Service = NULL;\r | |
154 | MtftpSb = NetAllocatePool (sizeof (MTFTP4_SERVICE));\r | |
155 | \r | |
156 | if (MtftpSb == NULL) {\r | |
157 | return EFI_OUT_OF_RESOURCES;\r | |
158 | }\r | |
159 | \r | |
160 | MtftpSb->Signature = MTFTP4_SERVICE_SIGNATURE;\r | |
161 | MtftpSb->ServiceBinding = gMtftp4ServiceBindingTemplete;\r | |
162 | MtftpSb->InDestory = FALSE;\r | |
163 | MtftpSb->ChildrenNum = 0;\r | |
164 | NetListInit (&MtftpSb->Children);\r | |
165 | \r | |
166 | MtftpSb->Timer = NULL;\r | |
167 | MtftpSb->TimerToGetMap = NULL;\r | |
168 | MtftpSb->Controller = Controller;\r | |
169 | MtftpSb->Image = Image;\r | |
170 | MtftpSb->ConnectUdp = NULL;\r | |
171 | \r | |
172 | //\r | |
173 | // Create the timer and a udp to be notified when UDP is uninstalled\r | |
174 | //\r | |
175 | Status = gBS->CreateEvent (\r | |
176 | EVT_NOTIFY_SIGNAL | EVT_TIMER,\r | |
36ee91ca | 177 | NET_TPL_TIMER,\r |
772db4bb | 178 | Mtftp4OnTimerTick,\r |
179 | MtftpSb,\r | |
180 | &MtftpSb->Timer\r | |
181 | );\r | |
182 | \r | |
183 | if (EFI_ERROR (Status)) {\r | |
184 | NetFreePool (MtftpSb);\r | |
185 | return Status;\r | |
186 | }\r | |
187 | \r | |
188 | //\r | |
189 | // Create the timer used to time out the procedure which is used to\r | |
190 | // get the default IP address.\r | |
191 | //\r | |
192 | Status = gBS->CreateEvent (\r | |
193 | EVT_TIMER,\r | |
36ee91ca | 194 | NET_TPL_TIMER,\r |
772db4bb | 195 | NULL,\r |
196 | NULL,\r | |
197 | &MtftpSb->TimerToGetMap\r | |
198 | );\r | |
199 | if (EFI_ERROR (Status)) {\r | |
200 | gBS->CloseEvent (MtftpSb->Timer);\r | |
201 | NetFreePool (MtftpSb);\r | |
202 | return Status;\r | |
203 | }\r | |
204 | \r | |
205 | MtftpSb->ConnectUdp = UdpIoCreatePort (Controller, Image, Mtftp4ConfigNullUdp, NULL);\r | |
206 | \r | |
207 | if (MtftpSb->ConnectUdp == NULL) {\r | |
208 | gBS->CloseEvent (MtftpSb->TimerToGetMap);\r | |
209 | gBS->CloseEvent (MtftpSb->Timer);\r | |
210 | NetFreePool (MtftpSb);\r | |
211 | return EFI_DEVICE_ERROR;\r | |
212 | }\r | |
213 | \r | |
214 | *Service = MtftpSb;\r | |
215 | return EFI_SUCCESS;\r | |
216 | }\r | |
217 | \r | |
218 | \r | |
219 | /**\r | |
220 | Release all the resource used the MTFTP service binding instance.\r | |
221 | \r | |
222 | @param MtftpSb The MTFTP service binding instance.\r | |
223 | \r | |
224 | @return None\r | |
225 | \r | |
226 | **/\r | |
227 | VOID\r | |
228 | Mtftp4CleanService (\r | |
229 | IN MTFTP4_SERVICE *MtftpSb\r | |
230 | )\r | |
231 | {\r | |
232 | UdpIoFreePort (MtftpSb->ConnectUdp);\r | |
233 | gBS->CloseEvent (MtftpSb->TimerToGetMap);\r | |
234 | gBS->CloseEvent (MtftpSb->Timer);\r | |
235 | }\r | |
236 | \r | |
237 | \r | |
238 | /**\r | |
239 | Start the MTFTP driver on this controller. MTFTP driver will\r | |
240 | install a MTFTP SERVICE BINDING protocol on the supported\r | |
241 | controller, which can be used to create/destroy MTFTP children.\r | |
242 | \r | |
243 | @param This The MTFTP driver binding protocol.\r | |
244 | @param Controller The controller to manage.\r | |
245 | @param RemainingDevicePath Remaining device path.\r | |
246 | \r | |
247 | @retval EFI_ALREADY_STARTED The MTFTP service binding protocol has been\r | |
248 | started on the controller.\r | |
249 | @retval EFI_SUCCESS The MTFTP service binding is installed on the\r | |
250 | controller.\r | |
251 | \r | |
252 | **/\r | |
253 | EFI_STATUS\r | |
254 | Mtftp4DriverBindingStart (\r | |
255 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
256 | IN EFI_HANDLE Controller,\r | |
257 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
258 | )\r | |
259 | {\r | |
260 | MTFTP4_SERVICE *MtftpSb;\r | |
261 | EFI_STATUS Status;\r | |
262 | \r | |
263 | //\r | |
264 | // Directly return if driver is already running.\r | |
265 | //\r | |
266 | Status = gBS->OpenProtocol (\r | |
267 | Controller,\r | |
268 | &gEfiMtftp4ServiceBindingProtocolGuid,\r | |
269 | NULL,\r | |
270 | This->DriverBindingHandle,\r | |
271 | Controller,\r | |
272 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
273 | );\r | |
274 | \r | |
275 | if (Status == EFI_SUCCESS) {\r | |
276 | return EFI_ALREADY_STARTED;\r | |
277 | }\r | |
278 | \r | |
279 | Status = Mtftp4CreateService (Controller, This->DriverBindingHandle, &MtftpSb);\r | |
280 | \r | |
281 | if (EFI_ERROR (Status)) {\r | |
282 | return Status;\r | |
283 | }\r | |
284 | \r | |
285 | Status = gBS->SetTimer (MtftpSb->Timer, TimerPeriodic, TICKS_PER_SECOND);\r | |
286 | \r | |
287 | if (EFI_ERROR (Status)) {\r | |
288 | goto ON_ERROR;\r | |
289 | }\r | |
290 | \r | |
291 | //\r | |
292 | // Install the Mtftp4ServiceBinding Protocol onto Controller\r | |
293 | //\r | |
294 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
295 | &Controller,\r | |
296 | &gEfiMtftp4ServiceBindingProtocolGuid,\r | |
297 | &MtftpSb->ServiceBinding,\r | |
298 | NULL\r | |
299 | );\r | |
300 | \r | |
301 | if (EFI_ERROR (Status)) {\r | |
302 | goto ON_ERROR;\r | |
303 | }\r | |
304 | \r | |
305 | return EFI_SUCCESS;\r | |
306 | \r | |
307 | ON_ERROR:\r | |
308 | Mtftp4CleanService (MtftpSb);\r | |
309 | NetFreePool (MtftpSb);\r | |
310 | \r | |
311 | return Status;\r | |
312 | }\r | |
313 | \r | |
314 | \r | |
315 | /**\r | |
316 | Stop the MTFTP driver on controller. The controller is a UDP\r | |
317 | child handle.\r | |
318 | \r | |
319 | @param This The MTFTP driver binding protocol\r | |
320 | @param Controller The controller to stop\r | |
321 | @param NumberOfChildren The number of children\r | |
322 | @param ChildHandleBuffer The array of the child handle.\r | |
323 | \r | |
324 | @retval EFI_SUCCESS The driver is stopped on the controller.\r | |
325 | @retval EFI_DEVICE_ERROR Failed to stop the driver on the controller.\r | |
326 | \r | |
327 | **/\r | |
328 | EFI_STATUS\r | |
329 | Mtftp4DriverBindingStop (\r | |
330 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
331 | IN EFI_HANDLE Controller,\r | |
332 | IN UINTN NumberOfChildren,\r | |
333 | IN EFI_HANDLE *ChildHandleBuffer\r | |
334 | )\r | |
335 | {\r | |
336 | EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;\r | |
337 | MTFTP4_SERVICE *MtftpSb;\r | |
338 | MTFTP4_PROTOCOL *Instance;\r | |
339 | EFI_HANDLE NicHandle;\r | |
340 | EFI_STATUS Status;\r | |
341 | EFI_TPL OldTpl;\r | |
342 | \r | |
343 | //\r | |
344 | // MTFTP driver opens UDP child, So, Controller is a UDP\r | |
345 | // child handle. Locate the Nic handle first. Then get the\r | |
346 | // MTFTP private data back.\r | |
347 | //\r | |
348 | NicHandle = NetLibGetNicHandle (Controller, &gEfiUdp4ProtocolGuid);\r | |
349 | \r | |
350 | if (NicHandle == NULL) {\r | |
c4a62a12 | 351 | return EFI_DEVICE_ERROR;\r |
772db4bb | 352 | }\r |
353 | \r | |
354 | Status = gBS->OpenProtocol (\r | |
355 | NicHandle,\r | |
356 | &gEfiMtftp4ServiceBindingProtocolGuid,\r | |
357 | (VOID **) &ServiceBinding,\r | |
358 | This->DriverBindingHandle,\r | |
359 | NicHandle,\r | |
360 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
361 | );\r | |
362 | \r | |
363 | if (EFI_ERROR (Status)) {\r | |
364 | return EFI_DEVICE_ERROR;\r | |
365 | }\r | |
366 | \r | |
367 | MtftpSb = MTFTP4_SERVICE_FROM_THIS (ServiceBinding);\r | |
368 | \r | |
369 | if (MtftpSb->InDestory) {\r | |
370 | return EFI_SUCCESS;\r | |
371 | }\r | |
372 | \r | |
c4a62a12 | 373 | OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);\r |
772db4bb | 374 | \r |
c4a62a12 | 375 | if (NumberOfChildren == 0) {\r |
772db4bb | 376 | \r |
c4a62a12 | 377 | MtftpSb->InDestory = TRUE;\r |
772db4bb | 378 | \r |
c4a62a12 | 379 | gBS->UninstallProtocolInterface (\r |
380 | NicHandle,\r | |
381 | &gEfiMtftp4ServiceBindingProtocolGuid,\r | |
382 | ServiceBinding\r | |
383 | );\r | |
772db4bb | 384 | \r |
c4a62a12 | 385 | Mtftp4CleanService (MtftpSb);\r |
772db4bb | 386 | \r |
c4a62a12 | 387 | NetFreePool (MtftpSb);\r |
388 | } else {\r | |
772db4bb | 389 | \r |
c4a62a12 | 390 | while (!NetListIsEmpty (&MtftpSb->Children)) {\r |
391 | Instance = NET_LIST_HEAD (&MtftpSb->Children, MTFTP4_PROTOCOL, Link);\r | |
392 | Mtftp4ServiceBindingDestroyChild (ServiceBinding, Instance->Handle);\r | |
393 | }\r | |
772db4bb | 394 | \r |
c4a62a12 | 395 | if (MtftpSb->ChildrenNum != 0) {\r |
396 | Status = EFI_DEVICE_ERROR;\r | |
397 | }\r | |
398 | }\r | |
772db4bb | 399 | \r |
400 | NET_RESTORE_TPL (OldTpl);\r | |
401 | return Status;\r | |
402 | }\r | |
403 | \r | |
404 | \r | |
405 | /**\r | |
406 | Initialize a MTFTP protocol instance which is the child of MtftpSb.\r | |
407 | \r | |
408 | @param MtftpSb The MTFTP service binding protocol.\r | |
409 | @param Instance The MTFTP instance to initialize.\r | |
410 | \r | |
411 | @return None\r | |
412 | \r | |
413 | **/\r | |
414 | VOID\r | |
415 | Mtftp4InitProtocol (\r | |
416 | IN MTFTP4_SERVICE *MtftpSb,\r | |
417 | IN MTFTP4_PROTOCOL *Instance\r | |
418 | )\r | |
419 | {\r | |
420 | NetZeroMem (Instance, sizeof (MTFTP4_PROTOCOL));\r | |
421 | \r | |
422 | Instance->Signature = MTFTP4_PROTOCOL_SIGNATURE;\r | |
423 | NetListInit (&Instance->Link);\r | |
687a2e5f | 424 | CopyMem (&Instance->Mtftp4, &gMtftp4ProtocolTemplate, sizeof (Instance->Mtftp4));\r |
772db4bb | 425 | Instance->State = MTFTP4_STATE_UNCONFIGED;\r |
426 | Instance->Indestory = FALSE;\r | |
427 | Instance->Service = MtftpSb;\r | |
428 | \r | |
429 | NetListInit (&Instance->Blocks);\r | |
430 | }\r | |
431 | \r | |
432 | \r | |
433 | /**\r | |
434 | Create a MTFTP child for the service binding instance, then\r | |
435 | install the MTFTP protocol to the ChildHandle.\r | |
436 | \r | |
437 | @param This The MTFTP service binding instance.\r | |
438 | @param ChildHandle The Child handle to install the MTFTP protocol.\r | |
439 | \r | |
440 | @retval EFI_INVALID_PARAMETER The parameter is invalid.\r | |
441 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource for the new child.\r | |
442 | @retval EFI_SUCCESS The child is successfully create.\r | |
443 | \r | |
444 | **/\r | |
445 | EFI_STATUS\r | |
446 | Mtftp4ServiceBindingCreateChild (\r | |
447 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
448 | IN OUT EFI_HANDLE *ChildHandle\r | |
449 | )\r | |
450 | {\r | |
451 | MTFTP4_SERVICE *MtftpSb;\r | |
452 | MTFTP4_PROTOCOL *Instance;\r | |
453 | EFI_STATUS Status;\r | |
454 | EFI_TPL OldTpl;\r | |
455 | VOID *Udp4;\r | |
456 | \r | |
457 | if ((This == NULL) || (ChildHandle == NULL)) {\r | |
458 | return EFI_INVALID_PARAMETER;\r | |
459 | }\r | |
460 | \r | |
461 | Instance = NetAllocatePool (sizeof (*Instance));\r | |
462 | \r | |
463 | if (Instance == NULL) {\r | |
464 | return EFI_OUT_OF_RESOURCES;\r | |
465 | }\r | |
466 | \r | |
467 | MtftpSb = MTFTP4_SERVICE_FROM_THIS (This);\r | |
468 | \r | |
469 | Mtftp4InitProtocol (MtftpSb, Instance);\r | |
470 | \r | |
471 | Instance->UnicastPort = UdpIoCreatePort (\r | |
472 | MtftpSb->Controller,\r | |
473 | MtftpSb->Image,\r | |
474 | Mtftp4ConfigNullUdp,\r | |
475 | Instance\r | |
476 | );\r | |
477 | \r | |
478 | if (Instance->UnicastPort == NULL) {\r | |
479 | NetFreePool (Instance);\r | |
480 | return EFI_OUT_OF_RESOURCES;\r | |
481 | }\r | |
482 | \r | |
483 | //\r | |
484 | // Install the MTFTP protocol onto ChildHandle\r | |
485 | //\r | |
486 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
487 | ChildHandle,\r | |
488 | &gEfiMtftp4ProtocolGuid,\r | |
489 | &Instance->Mtftp4,\r | |
490 | NULL\r | |
491 | );\r | |
492 | \r | |
493 | if (EFI_ERROR (Status)) {\r | |
494 | goto ON_ERROR;\r | |
495 | }\r | |
496 | \r | |
497 | Instance->Handle = *ChildHandle;\r | |
498 | \r | |
499 | //\r | |
500 | // Open the Udp4 protocol BY_CHILD.\r | |
501 | //\r | |
502 | Status = gBS->OpenProtocol (\r | |
503 | MtftpSb->ConnectUdp->UdpHandle,\r | |
504 | &gEfiUdp4ProtocolGuid,\r | |
505 | (VOID **) &Udp4,\r | |
506 | gMtftp4DriverBinding.DriverBindingHandle,\r | |
507 | Instance->Handle,\r | |
508 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
509 | );\r | |
510 | if (EFI_ERROR (Status)) {\r | |
511 | gBS->UninstallMultipleProtocolInterfaces (\r | |
512 | Instance->Handle,\r | |
513 | &gEfiMtftp4ProtocolGuid,\r | |
514 | &Instance->Mtftp4,\r | |
515 | NULL\r | |
516 | );\r | |
517 | \r | |
518 | goto ON_ERROR;\r | |
519 | }\r | |
520 | \r | |
521 | //\r | |
522 | // Add it to the parent's child list.\r | |
523 | //\r | |
524 | OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);\r | |
525 | \r | |
526 | NetListInsertTail (&MtftpSb->Children, &Instance->Link);\r | |
527 | MtftpSb->ChildrenNum++;\r | |
528 | \r | |
529 | NET_RESTORE_TPL (OldTpl);\r | |
530 | \r | |
531 | ON_ERROR:\r | |
532 | \r | |
533 | if (EFI_ERROR (Status)) {\r | |
534 | UdpIoFreePort (Instance->UnicastPort);\r | |
535 | NetFreePool (Instance);\r | |
536 | }\r | |
537 | \r | |
538 | return Status;\r | |
539 | }\r | |
540 | \r | |
541 | \r | |
542 | /**\r | |
543 | Destory one of the service binding's child.\r | |
544 | \r | |
545 | @param This The service binding instance\r | |
546 | @param ChildHandle The child handle to destory\r | |
547 | \r | |
548 | @retval EFI_INVALID_PARAMETER The parameter is invaid.\r | |
549 | @retval EFI_UNSUPPORTED The child may have already been destoried.\r | |
550 | @retval EFI_SUCCESS The child is destoried and removed from the\r | |
551 | parent's child list.\r | |
552 | \r | |
553 | **/\r | |
554 | EFI_STATUS\r | |
555 | Mtftp4ServiceBindingDestroyChild (\r | |
556 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
557 | IN EFI_HANDLE ChildHandle\r | |
558 | )\r | |
559 | {\r | |
560 | MTFTP4_SERVICE *MtftpSb;\r | |
561 | MTFTP4_PROTOCOL *Instance;\r | |
562 | EFI_MTFTP4_PROTOCOL *Mtftp4;\r | |
563 | EFI_STATUS Status;\r | |
564 | EFI_TPL OldTpl;\r | |
565 | \r | |
566 | if ((This == NULL) || (ChildHandle == NULL)) {\r | |
567 | return EFI_INVALID_PARAMETER;\r | |
568 | }\r | |
569 | \r | |
570 | //\r | |
571 | // Retrieve the private context data structures\r | |
572 | //\r | |
573 | Status = gBS->OpenProtocol (\r | |
574 | ChildHandle,\r | |
575 | &gEfiMtftp4ProtocolGuid,\r | |
576 | (VOID **) &Mtftp4,\r | |
577 | gMtftp4DriverBinding.DriverBindingHandle,\r | |
578 | ChildHandle,\r | |
579 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
580 | );\r | |
581 | \r | |
582 | if (EFI_ERROR (Status)) {\r | |
583 | return EFI_UNSUPPORTED;\r | |
584 | }\r | |
585 | \r | |
586 | Instance = MTFTP4_PROTOCOL_FROM_THIS (Mtftp4);\r | |
587 | MtftpSb = MTFTP4_SERVICE_FROM_THIS (This);\r | |
588 | \r | |
589 | if (Instance->Service != MtftpSb) {\r | |
590 | return EFI_INVALID_PARAMETER;\r | |
591 | }\r | |
592 | \r | |
593 | if (Instance->Indestory) {\r | |
594 | return EFI_SUCCESS;\r | |
595 | }\r | |
596 | \r | |
597 | Instance->Indestory = TRUE;\r | |
598 | \r | |
599 | //\r | |
600 | // Close the Udp4 protocol.\r | |
601 | //\r | |
602 | gBS->CloseProtocol (\r | |
603 | MtftpSb->ConnectUdp->UdpHandle,\r | |
604 | &gEfiUdp4ProtocolGuid,\r | |
605 | gMtftp4DriverBinding.DriverBindingHandle,\r | |
606 | ChildHandle\r | |
607 | );\r | |
608 | \r | |
609 | //\r | |
610 | // Uninstall the MTFTP4 protocol first to enable a top down destruction.\r | |
611 | //\r | |
612 | Status = gBS->UninstallProtocolInterface (\r | |
613 | ChildHandle,\r | |
614 | &gEfiMtftp4ProtocolGuid,\r | |
615 | Mtftp4\r | |
616 | );\r | |
617 | \r | |
618 | if (EFI_ERROR (Status)) {\r | |
619 | Instance->Indestory = FALSE;\r | |
620 | return Status;\r | |
621 | }\r | |
622 | \r | |
623 | OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);\r | |
624 | \r | |
625 | Mtftp4CleanOperation (Instance, EFI_DEVICE_ERROR);\r | |
626 | UdpIoFreePort (Instance->UnicastPort);\r | |
627 | \r | |
628 | NetListRemoveEntry (&Instance->Link);\r | |
629 | MtftpSb->ChildrenNum--;\r | |
630 | \r | |
631 | NET_RESTORE_TPL (OldTpl);\r | |
632 | \r | |
633 | NetFreePool (Instance);\r | |
634 | return EFI_SUCCESS;\r | |
635 | }\r |