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772db4bb | 1 | /** @file\r |
3e8c18da | 2 | The driver binding and service binding protocol for IP4 driver.\r |
e2851998 | 3 | \r |
1f6729ff | 4 | Copyright (c) 2005 - 2015, Intel Corporation. All rights reserved.<BR>\r |
c79de074 SEHM |
5 | (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>\r |
6 | \r | |
e5eed7d3 | 7 | This program and the accompanying materials\r |
772db4bb | 8 | are licensed and made available under the terms and conditions of the BSD License\r |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
772db4bb | 15 | **/\r |
16 | \r | |
17 | #include "Ip4Impl.h"\r | |
18 | \r | |
19 | EFI_DRIVER_BINDING_PROTOCOL gIp4DriverBinding = {\r | |
20 | Ip4DriverBindingSupported,\r | |
21 | Ip4DriverBindingStart,\r | |
22 | Ip4DriverBindingStop,\r | |
23 | 0xa,\r | |
24 | NULL,\r | |
25 | NULL\r | |
26 | };\r | |
27 | \r | |
c79de074 SEHM |
28 | BOOLEAN mIpSec2Installed = FALSE;\r |
29 | \r | |
30 | /**\r | |
31 | Callback function for IpSec2 Protocol install.\r | |
32 | \r | |
33 | @param[in] Event Event whose notification function is being invoked\r | |
34 | @param[in] Context Pointer to the notification function's context\r | |
35 | \r | |
36 | **/\r | |
37 | VOID\r | |
38 | EFIAPI\r | |
39 | IpSec2InstalledCallback (\r | |
40 | IN EFI_EVENT Event,\r | |
41 | IN VOID *Context\r | |
42 | )\r | |
43 | {\r | |
44 | //\r | |
45 | // Close the event so it does not get called again.\r | |
46 | //\r | |
47 | gBS->CloseEvent (Event);\r | |
48 | \r | |
49 | mIpSec2Installed = TRUE;\r | |
50 | }\r | |
51 | \r | |
5405e9a6 | 52 | /**\r |
53 | This is the declaration of an EFI image entry point. This entry point is\r | |
54 | the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including\r | |
55 | both device drivers and bus drivers.\r | |
e2851998 | 56 | \r |
5405e9a6 | 57 | The entry point for IP4 driver which install the driver\r |
58 | binding and component name protocol on its image.\r | |
59 | \r | |
3e8c18da | 60 | @param[in] ImageHandle The firmware allocated handle for the UEFI image.\r |
61 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
5405e9a6 | 62 | \r |
63 | @retval EFI_SUCCESS The operation completed successfully.\r | |
64 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
65 | \r | |
66 | **/\r | |
772db4bb | 67 | EFI_STATUS\r |
68 | EFIAPI\r | |
69 | Ip4DriverEntryPoint (\r | |
70 | IN EFI_HANDLE ImageHandle,\r | |
71 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
72 | )\r | |
772db4bb | 73 | {\r |
c79de074 SEHM |
74 | VOID *Registration;\r |
75 | \r | |
76 | EfiCreateProtocolNotifyEvent (\r | |
77 | &gEfiIpSec2ProtocolGuid,\r | |
78 | TPL_CALLBACK,\r | |
79 | IpSec2InstalledCallback,\r | |
80 | NULL,\r | |
81 | &Registration\r | |
82 | );\r | |
83 | \r | |
83cbd279 | 84 | return EfiLibInstallDriverBindingComponentName2 (\r |
772db4bb | 85 | ImageHandle,\r |
86 | SystemTable,\r | |
87 | &gIp4DriverBinding,\r | |
88 | ImageHandle,\r | |
89 | &gIp4ComponentName,\r | |
83cbd279 | 90 | &gIp4ComponentName2\r |
772db4bb | 91 | );\r |
92 | }\r | |
93 | \r | |
772db4bb | 94 | /**\r |
5405e9a6 | 95 | Test to see if this driver supports ControllerHandle. This service\r |
96 | is called by the EFI boot service ConnectController(). In\r | |
97 | order to make drivers as small as possible, there are a few calling\r | |
98 | restrictions for this service. ConnectController() must\r | |
99 | follow these calling restrictions. If any other agent wishes to call\r | |
100 | Supported() it must also follow these calling restrictions.\r | |
101 | \r | |
3e8c18da | 102 | @param[in] This Protocol instance pointer.\r |
103 | @param[in] ControllerHandle Handle of device to test\r | |
104 | @param[in] RemainingDevicePath Optional parameter use to pick a specific child\r | |
105 | device to start.\r | |
5405e9a6 | 106 | \r |
107 | @retval EFI_SUCCESS This driver supports this device\r | |
108 | @retval EFI_ALREADY_STARTED This driver is already running on this device\r | |
109 | @retval other This driver does not support this device\r | |
772db4bb | 110 | \r |
111 | **/\r | |
112 | EFI_STATUS\r | |
113 | EFIAPI\r | |
114 | Ip4DriverBindingSupported (\r | |
115 | IN EFI_DRIVER_BINDING_PROTOCOL * This,\r | |
116 | IN EFI_HANDLE ControllerHandle,\r | |
117 | IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL\r | |
118 | )\r | |
119 | {\r | |
120 | EFI_STATUS Status;\r | |
121 | \r | |
122 | //\r | |
123 | // Test for the MNP service binding Protocol\r | |
124 | //\r | |
125 | Status = gBS->OpenProtocol (\r | |
126 | ControllerHandle,\r | |
127 | &gEfiManagedNetworkServiceBindingProtocolGuid,\r | |
128 | NULL,\r | |
129 | This->DriverBindingHandle,\r | |
130 | ControllerHandle,\r | |
131 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
132 | );\r | |
133 | \r | |
134 | if (EFI_ERROR (Status)) {\r | |
135 | return Status;\r | |
136 | }\r | |
137 | \r | |
138 | //\r | |
139 | // Test for the Arp service binding Protocol\r | |
140 | //\r | |
141 | Status = gBS->OpenProtocol (\r | |
142 | ControllerHandle,\r | |
143 | &gEfiArpServiceBindingProtocolGuid,\r | |
144 | NULL,\r | |
145 | This->DriverBindingHandle,\r | |
146 | ControllerHandle,\r | |
147 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
148 | );\r | |
149 | \r | |
150 | return Status;\r | |
151 | }\r | |
152 | \r | |
2ff29212 | 153 | /**\r |
154 | Clean up a IP4 service binding instance. It will release all\r | |
155 | the resource allocated by the instance. The instance may be\r | |
156 | partly initialized, or partly destroyed. If a resource is\r | |
75dce340 | 157 | destroyed, it is marked as that in case the destroy failed and\r |
2ff29212 | 158 | being called again later.\r |
159 | \r | |
1f6729ff | 160 | @param[in] IpSb The IP4 service binding instance to clean up\r |
2ff29212 | 161 | \r |
162 | @retval EFI_SUCCESS The resource used by the instance are cleaned up\r | |
163 | @retval other Failed to clean up some of the resources.\r | |
164 | \r | |
165 | **/\r | |
772db4bb | 166 | EFI_STATUS\r |
167 | Ip4CleanService (\r | |
168 | IN IP4_SERVICE *IpSb\r | |
169 | );\r | |
170 | \r | |
171 | \r | |
172 | /**\r | |
5405e9a6 | 173 | Create a new IP4 driver service binding private instance.\r |
772db4bb | 174 | \r |
3e8c18da | 175 | @param Controller The controller that has MNP service binding\r |
176 | installed\r | |
177 | @param ImageHandle The IP4 driver's image handle\r | |
178 | @param Service The variable to receive the newly created IP4\r | |
179 | service.\r | |
772db4bb | 180 | \r |
181 | @retval EFI_OUT_OF_RESOURCES Failed to allocate some resource\r | |
182 | @retval EFI_SUCCESS A new IP4 service binding private is created.\r | |
5405e9a6 | 183 | @retval other Other error occurs.\r |
772db4bb | 184 | \r |
185 | **/\r | |
772db4bb | 186 | EFI_STATUS\r |
187 | Ip4CreateService (\r | |
188 | IN EFI_HANDLE Controller,\r | |
189 | IN EFI_HANDLE ImageHandle,\r | |
190 | OUT IP4_SERVICE **Service\r | |
191 | )\r | |
192 | {\r | |
193 | IP4_SERVICE *IpSb;\r | |
194 | EFI_STATUS Status;\r | |
195 | \r | |
196 | ASSERT (Service != NULL);\r | |
197 | \r | |
198 | *Service = NULL;\r | |
199 | \r | |
200 | //\r | |
201 | // allocate a service private data then initialize all the filed to\r | |
202 | // empty resources, so if any thing goes wrong when allocating\r | |
203 | // resources, Ip4CleanService can be called to clean it up.\r | |
204 | //\r | |
1f6729ff | 205 | IpSb = AllocateZeroPool (sizeof (IP4_SERVICE));\r |
772db4bb | 206 | \r |
207 | if (IpSb == NULL) {\r | |
208 | return EFI_OUT_OF_RESOURCES;\r | |
209 | }\r | |
210 | \r | |
211 | IpSb->Signature = IP4_SERVICE_SIGNATURE;\r | |
212 | IpSb->ServiceBinding.CreateChild = Ip4ServiceBindingCreateChild;\r | |
213 | IpSb->ServiceBinding.DestroyChild = Ip4ServiceBindingDestroyChild;\r | |
214 | IpSb->State = IP4_SERVICE_UNSTARTED;\r | |
772db4bb | 215 | \r |
216 | IpSb->NumChildren = 0;\r | |
e48e37fc | 217 | InitializeListHead (&IpSb->Children);\r |
772db4bb | 218 | \r |
e48e37fc | 219 | InitializeListHead (&IpSb->Interfaces);\r |
772db4bb | 220 | IpSb->DefaultInterface = NULL;\r |
221 | IpSb->DefaultRouteTable = NULL;\r | |
222 | \r | |
223 | Ip4InitAssembleTable (&IpSb->Assemble);\r | |
224 | \r | |
225 | IpSb->IgmpCtrl.Igmpv1QuerySeen = 0;\r | |
e48e37fc | 226 | InitializeListHead (&IpSb->IgmpCtrl.Groups);\r |
772db4bb | 227 | \r |
228 | IpSb->Image = ImageHandle;\r | |
229 | IpSb->Controller = Controller;\r | |
230 | \r | |
231 | IpSb->MnpChildHandle = NULL;\r | |
232 | IpSb->Mnp = NULL;\r | |
233 | \r | |
234 | IpSb->MnpConfigData.ReceivedQueueTimeoutValue = 0;\r | |
235 | IpSb->MnpConfigData.TransmitQueueTimeoutValue = 0;\r | |
236 | IpSb->MnpConfigData.ProtocolTypeFilter = IP4_ETHER_PROTO;\r | |
237 | IpSb->MnpConfigData.EnableUnicastReceive = TRUE;\r | |
238 | IpSb->MnpConfigData.EnableMulticastReceive = TRUE;\r | |
239 | IpSb->MnpConfigData.EnableBroadcastReceive = TRUE;\r | |
240 | IpSb->MnpConfigData.EnablePromiscuousReceive = FALSE;\r | |
241 | IpSb->MnpConfigData.FlushQueuesOnReset = TRUE;\r | |
242 | IpSb->MnpConfigData.EnableReceiveTimestamps = FALSE;\r | |
243 | IpSb->MnpConfigData.DisableBackgroundPolling = FALSE;\r | |
244 | \r | |
e48e37fc | 245 | ZeroMem (&IpSb->SnpMode, sizeof (EFI_SIMPLE_NETWORK_MODE));\r |
772db4bb | 246 | \r |
1f6729ff | 247 | IpSb->Timer = NULL;\r |
772db4bb | 248 | \r |
2c320007 | 249 | IpSb->ReconfigEvent = NULL;\r |
e371cc14 JW |
250 | \r |
251 | IpSb->Reconfig = FALSE;\r | |
2c320007 JW |
252 | \r |
253 | IpSb->MediaPresent = TRUE;\r | |
254 | \r | |
772db4bb | 255 | //\r |
256 | // Create various resources. First create the route table, timer\r | |
257 | // event and MNP child. IGMP, interface's initialization depend\r | |
258 | // on the MNP child.\r | |
259 | //\r | |
260 | IpSb->DefaultRouteTable = Ip4CreateRouteTable ();\r | |
261 | \r | |
262 | if (IpSb->DefaultRouteTable == NULL) {\r | |
263 | Status = EFI_OUT_OF_RESOURCES;\r | |
264 | goto ON_ERROR;\r | |
265 | }\r | |
266 | \r | |
267 | Status = gBS->CreateEvent (\r | |
268 | EVT_NOTIFY_SIGNAL | EVT_TIMER,\r | |
e48e37fc | 269 | TPL_CALLBACK,\r |
772db4bb | 270 | Ip4TimerTicking,\r |
271 | IpSb,\r | |
272 | &IpSb->Timer\r | |
273 | );\r | |
274 | \r | |
275 | if (EFI_ERROR (Status)) {\r | |
276 | goto ON_ERROR;\r | |
277 | }\r | |
278 | \r | |
279 | Status = NetLibCreateServiceChild (\r | |
280 | Controller,\r | |
281 | ImageHandle,\r | |
282 | &gEfiManagedNetworkServiceBindingProtocolGuid,\r | |
283 | &IpSb->MnpChildHandle\r | |
284 | );\r | |
285 | \r | |
286 | if (EFI_ERROR (Status)) {\r | |
287 | goto ON_ERROR;\r | |
288 | }\r | |
289 | \r | |
290 | Status = gBS->OpenProtocol (\r | |
291 | IpSb->MnpChildHandle,\r | |
292 | &gEfiManagedNetworkProtocolGuid,\r | |
293 | (VOID **) &IpSb->Mnp,\r | |
294 | ImageHandle,\r | |
295 | Controller,\r | |
296 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
297 | );\r | |
298 | \r | |
299 | if (EFI_ERROR (Status)) {\r | |
300 | goto ON_ERROR;\r | |
301 | }\r | |
302 | \r | |
303 | Status = Ip4ServiceConfigMnp (IpSb, TRUE);\r | |
304 | \r | |
305 | if (EFI_ERROR (Status)) {\r | |
306 | goto ON_ERROR;\r | |
307 | }\r | |
308 | \r | |
309 | Status = IpSb->Mnp->GetModeData (IpSb->Mnp, NULL, &IpSb->SnpMode);\r | |
310 | \r | |
311 | if (EFI_ERROR (Status)) {\r | |
312 | goto ON_ERROR;\r | |
313 | }\r | |
314 | \r | |
315 | Status = Ip4InitIgmp (IpSb);\r | |
316 | \r | |
317 | if (EFI_ERROR (Status)) {\r | |
318 | goto ON_ERROR;\r | |
319 | }\r | |
320 | \r | |
1f6729ff | 321 | IpSb->MacString = NULL;\r |
322 | Status = NetLibGetMacString (IpSb->Controller, IpSb->Image, &IpSb->MacString);\r | |
323 | \r | |
324 | if (EFI_ERROR (Status)) {\r | |
325 | goto ON_ERROR;\r | |
326 | }\r | |
327 | \r | |
772db4bb | 328 | IpSb->DefaultInterface = Ip4CreateInterface (IpSb->Mnp, Controller, ImageHandle);\r |
329 | \r | |
330 | if (IpSb->DefaultInterface == NULL) {\r | |
331 | Status = EFI_OUT_OF_RESOURCES;\r | |
332 | goto ON_ERROR;\r | |
333 | }\r | |
334 | \r | |
e48e37fc | 335 | InsertHeadList (&IpSb->Interfaces, &IpSb->DefaultInterface->Link);\r |
772db4bb | 336 | \r |
1f6729ff | 337 | ZeroMem (&IpSb->Ip4Config2Instance, sizeof (IP4_CONFIG2_INSTANCE));\r |
338 | \r | |
339 | Status = Ip4Config2InitInstance (&IpSb->Ip4Config2Instance);\r | |
340 | \r | |
341 | if (EFI_ERROR (Status)) {\r | |
342 | goto ON_ERROR;\r | |
343 | }\r | |
344 | \r | |
a1503a32 | 345 | IpSb->MaxPacketSize = IpSb->SnpMode.MaxPacketSize - sizeof (IP4_HEAD);\r |
779ae357 | 346 | if (NetLibGetVlanId (IpSb->Controller) != 0) {\r |
347 | //\r | |
348 | // This is a VLAN device, reduce MTU by VLAN tag length\r | |
349 | //\r | |
350 | IpSb->MaxPacketSize -= NET_VLAN_TAG_LEN;\r | |
351 | }\r | |
9e375eb1 | 352 | IpSb->OldMaxPacketSize = IpSb->MaxPacketSize;\r |
772db4bb | 353 | *Service = IpSb;\r |
1f6729ff | 354 | \r |
772db4bb | 355 | return EFI_SUCCESS;\r |
356 | \r | |
357 | ON_ERROR:\r | |
358 | Ip4CleanService (IpSb);\r | |
766c7483 | 359 | FreePool (IpSb);\r |
772db4bb | 360 | \r |
361 | return Status;\r | |
362 | }\r | |
363 | \r | |
364 | \r | |
365 | /**\r | |
366 | Clean up a IP4 service binding instance. It will release all\r | |
367 | the resource allocated by the instance. The instance may be\r | |
5405e9a6 | 368 | partly initialized, or partly destroyed. If a resource is\r |
75dce340 | 369 | destroyed, it is marked as that in case the destroy failed and\r |
772db4bb | 370 | being called again later.\r |
371 | \r | |
1f6729ff | 372 | @param[in] IpSb The IP4 service binding instance to clean up\r |
772db4bb | 373 | \r |
374 | @retval EFI_SUCCESS The resource used by the instance are cleaned up\r | |
5405e9a6 | 375 | @retval other Failed to clean up some of the resources.\r |
772db4bb | 376 | \r |
377 | **/\r | |
378 | EFI_STATUS\r | |
379 | Ip4CleanService (\r | |
380 | IN IP4_SERVICE *IpSb\r | |
381 | )\r | |
382 | {\r | |
383 | EFI_STATUS Status;\r | |
384 | \r | |
385 | if (IpSb->DefaultInterface != NULL) {\r | |
386 | Status = Ip4FreeInterface (IpSb->DefaultInterface, NULL);\r | |
387 | \r | |
388 | if (EFI_ERROR (Status)) {\r | |
389 | return Status;\r | |
390 | }\r | |
391 | \r | |
392 | IpSb->DefaultInterface = NULL;\r | |
393 | }\r | |
394 | \r | |
395 | if (IpSb->DefaultRouteTable != NULL) {\r | |
396 | Ip4FreeRouteTable (IpSb->DefaultRouteTable);\r | |
397 | IpSb->DefaultRouteTable = NULL;\r | |
398 | }\r | |
399 | \r | |
400 | Ip4CleanAssembleTable (&IpSb->Assemble);\r | |
401 | \r | |
402 | if (IpSb->MnpChildHandle != NULL) {\r | |
5405e9a6 | 403 | if (IpSb->Mnp != NULL) {\r |
772db4bb | 404 | gBS->CloseProtocol (\r |
5405e9a6 | 405 | IpSb->MnpChildHandle,\r |
406 | &gEfiManagedNetworkProtocolGuid,\r | |
407 | IpSb->Image,\r | |
408 | IpSb->Controller\r | |
409 | );\r | |
772db4bb | 410 | \r |
411 | IpSb->Mnp = NULL;\r | |
412 | }\r | |
413 | \r | |
414 | NetLibDestroyServiceChild (\r | |
415 | IpSb->Controller,\r | |
416 | IpSb->Image,\r | |
417 | &gEfiManagedNetworkServiceBindingProtocolGuid,\r | |
418 | IpSb->MnpChildHandle\r | |
419 | );\r | |
420 | \r | |
421 | IpSb->MnpChildHandle = NULL;\r | |
422 | }\r | |
423 | \r | |
424 | if (IpSb->Timer != NULL) {\r | |
425 | gBS->SetTimer (IpSb->Timer, TimerCancel, 0);\r | |
426 | gBS->CloseEvent (IpSb->Timer);\r | |
427 | \r | |
428 | IpSb->Timer = NULL;\r | |
429 | }\r | |
430 | \r | |
2c320007 JW |
431 | if (IpSb->ReconfigEvent != NULL) {\r |
432 | gBS->CloseEvent (IpSb->ReconfigEvent);\r | |
433 | \r | |
434 | IpSb->ReconfigEvent = NULL;\r | |
435 | }\r | |
436 | \r | |
e371cc14 JW |
437 | IpSb->Reconfig = FALSE;\r |
438 | \r | |
1f6729ff | 439 | if (IpSb->MacString != NULL) {\r |
440 | FreePool (IpSb->MacString);\r | |
772db4bb | 441 | }\r |
442 | \r | |
1f6729ff | 443 | Ip4Config2CleanInstance (&IpSb->Ip4Config2Instance);\r |
444 | \r | |
772db4bb | 445 | return EFI_SUCCESS;\r |
446 | }\r | |
447 | \r | |
216f7970 | 448 | /**\r |
449 | Callback function which provided by user to remove one node in NetDestroyLinkList process.\r | |
450 | \r | |
451 | @param[in] Entry The entry to be removed.\r | |
452 | @param[in] Context Pointer to the callback context corresponds to the Context in NetDestroyLinkList.\r | |
453 | \r | |
454 | @retval EFI_SUCCESS The entry has been removed successfully.\r | |
455 | @retval Others Fail to remove the entry.\r | |
456 | \r | |
457 | **/\r | |
458 | EFI_STATUS\r | |
1f7eb561 | 459 | EFIAPI\r |
216f7970 | 460 | Ip4DestroyChildEntryInHandleBuffer (\r |
461 | IN LIST_ENTRY *Entry,\r | |
462 | IN VOID *Context\r | |
1f7eb561 | 463 | )\r |
216f7970 | 464 | {\r |
465 | IP4_PROTOCOL *IpInstance;\r | |
466 | EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;\r | |
467 | UINTN NumberOfChildren;\r | |
468 | EFI_HANDLE *ChildHandleBuffer;\r | |
469 | \r | |
470 | if (Entry == NULL || Context == NULL) {\r | |
471 | return EFI_INVALID_PARAMETER;\r | |
472 | }\r | |
473 | \r | |
474 | IpInstance = NET_LIST_USER_STRUCT_S (Entry, IP4_PROTOCOL, Link, IP4_PROTOCOL_SIGNATURE);\r | |
475 | ServiceBinding = ((IP4_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT *) Context)->ServiceBinding;\r | |
476 | NumberOfChildren = ((IP4_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT *) Context)->NumberOfChildren;\r | |
477 | ChildHandleBuffer = ((IP4_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT *) Context)->ChildHandleBuffer;\r | |
478 | \r | |
479 | if (!NetIsInHandleBuffer (IpInstance->Handle, NumberOfChildren, ChildHandleBuffer)) {\r | |
480 | return EFI_SUCCESS;\r | |
481 | }\r | |
482 | \r | |
483 | return ServiceBinding->DestroyChild (ServiceBinding, IpInstance->Handle);\r | |
484 | }\r | |
772db4bb | 485 | \r |
486 | /**\r | |
5405e9a6 | 487 | Start this driver on ControllerHandle. This service is called by the\r |
488 | EFI boot service ConnectController(). In order to make\r | |
489 | drivers as small as possible, there are a few calling restrictions for\r | |
490 | this service. ConnectController() must follow these\r | |
491 | calling restrictions. If any other agent wishes to call Start() it\r | |
492 | must also follow these calling restrictions.\r | |
493 | \r | |
3e8c18da | 494 | @param[in] This Protocol instance pointer.\r |
495 | @param[in] ControllerHandle Handle of device to bind driver to\r | |
496 | @param[in] RemainingDevicePath Optional parameter use to pick a specific child\r | |
497 | device to start.\r | |
5405e9a6 | 498 | \r |
499 | @retval EFI_SUCCESS This driver is added to ControllerHandle\r | |
500 | @retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle\r | |
501 | @retval other This driver does not support this device\r | |
772db4bb | 502 | \r |
503 | **/\r | |
504 | EFI_STATUS\r | |
505 | EFIAPI\r | |
506 | Ip4DriverBindingStart (\r | |
1f6729ff | 507 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
772db4bb | 508 | IN EFI_HANDLE ControllerHandle,\r |
1f6729ff | 509 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r |
772db4bb | 510 | )\r |
1f6729ff | 511 | { \r |
512 | EFI_STATUS Status;\r | |
513 | IP4_SERVICE *IpSb;\r | |
772db4bb | 514 | \r |
515 | //\r | |
516 | // Test for the Ip4 service binding protocol\r | |
517 | //\r | |
518 | Status = gBS->OpenProtocol (\r | |
519 | ControllerHandle,\r | |
520 | &gEfiIp4ServiceBindingProtocolGuid,\r | |
521 | NULL,\r | |
522 | This->DriverBindingHandle,\r | |
523 | ControllerHandle,\r | |
524 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
525 | );\r | |
526 | \r | |
527 | if (Status == EFI_SUCCESS) {\r | |
528 | return EFI_ALREADY_STARTED;\r | |
529 | }\r | |
1f6729ff | 530 | \r |
772db4bb | 531 | Status = Ip4CreateService (ControllerHandle, This->DriverBindingHandle, &IpSb);\r |
1f6729ff | 532 | \r |
772db4bb | 533 | if (EFI_ERROR (Status)) {\r |
534 | return Status;\r | |
535 | }\r | |
1f6729ff | 536 | \r |
e2851998 | 537 | ASSERT (IpSb != NULL);\r |
772db4bb | 538 | \r |
539 | //\r | |
540 | // Install the Ip4ServiceBinding Protocol onto ControlerHandle\r | |
541 | //\r | |
542 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
543 | &ControllerHandle,\r | |
544 | &gEfiIp4ServiceBindingProtocolGuid,\r | |
545 | &IpSb->ServiceBinding,\r | |
1f6729ff | 546 | &gEfiIp4Config2ProtocolGuid,\r |
547 | &IpSb->Ip4Config2Instance.Ip4Config2,\r | |
772db4bb | 548 | NULL\r |
549 | );\r | |
550 | \r | |
551 | if (EFI_ERROR (Status)) {\r | |
552 | goto FREE_SERVICE;\r | |
553 | }\r | |
1f6729ff | 554 | \r |
772db4bb | 555 | //\r |
1f6729ff | 556 | // Ready to go: start the receiving and timer.\r |
557 | // Ip4Config2SetPolicy maybe call Ip4ReceiveFrame() to set the default interface's RecvRequest first after\r | |
558 | // Ip4Config2 instance is initialized. So, EFI_ALREADY_STARTED is the allowed return status.\r | |
772db4bb | 559 | //\r |
560 | Status = Ip4ReceiveFrame (IpSb->DefaultInterface, NULL, Ip4AccpetFrame, IpSb);\r | |
561 | \r | |
1f6729ff | 562 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r |
772db4bb | 563 | goto UNINSTALL_PROTOCOL;\r |
564 | }\r | |
565 | \r | |
566 | Status = gBS->SetTimer (IpSb->Timer, TimerPeriodic, TICKS_PER_SECOND);\r | |
567 | \r | |
568 | if (EFI_ERROR (Status)) {\r | |
569 | goto UNINSTALL_PROTOCOL;\r | |
570 | }\r | |
571 | \r | |
572 | //\r | |
573 | // Initialize the IP4 ID\r | |
574 | //\r | |
575 | mIp4Id = (UINT16)NET_RANDOM (NetRandomInitSeed ());\r | |
576 | \r | |
772db4bb | 577 | return Status;\r |
578 | \r | |
579 | UNINSTALL_PROTOCOL:\r | |
580 | gBS->UninstallProtocolInterface (\r | |
581 | ControllerHandle,\r | |
582 | &gEfiIp4ServiceBindingProtocolGuid,\r | |
583 | &IpSb->ServiceBinding\r | |
584 | );\r | |
585 | \r | |
586 | FREE_SERVICE:\r | |
587 | Ip4CleanService (IpSb);\r | |
766c7483 | 588 | FreePool (IpSb);\r |
772db4bb | 589 | return Status;\r |
590 | }\r | |
591 | \r | |
592 | \r | |
593 | /**\r | |
5405e9a6 | 594 | Stop this driver on ControllerHandle. This service is called by the\r |
595 | EFI boot service DisconnectController(). In order to\r | |
596 | make drivers as small as possible, there are a few calling\r | |
597 | restrictions for this service. DisconnectController()\r | |
598 | must follow these calling restrictions. If any other agent wishes\r | |
599 | to call Stop() it must also follow these calling restrictions.\r | |
e2851998 | 600 | \r |
3e8c18da | 601 | @param[in] This Protocol instance pointer.\r |
602 | @param[in] ControllerHandle Handle of device to stop driver on\r | |
603 | @param[in] NumberOfChildren Number of Handles in ChildHandleBuffer. If number\r | |
604 | of children is zero stop the entire bus driver.\r | |
605 | @param[in] ChildHandleBuffer List of Child Handles to Stop.\r | |
5405e9a6 | 606 | \r |
3e8c18da | 607 | @retval EFI_SUCCESS This driver is removed ControllerHandle\r |
608 | @retval other This driver was not removed from this device\r | |
772db4bb | 609 | \r |
610 | **/\r | |
611 | EFI_STATUS\r | |
612 | EFIAPI\r | |
613 | Ip4DriverBindingStop (\r | |
614 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
615 | IN EFI_HANDLE ControllerHandle,\r | |
616 | IN UINTN NumberOfChildren,\r | |
617 | IN EFI_HANDLE *ChildHandleBuffer\r | |
618 | )\r | |
619 | {\r | |
216f7970 | 620 | EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;\r |
621 | IP4_SERVICE *IpSb; \r | |
622 | EFI_HANDLE NicHandle;\r | |
623 | EFI_STATUS Status; \r | |
624 | INTN State;\r | |
625 | LIST_ENTRY *List;\r | |
626 | IP4_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT Context;\r | |
d0ccf55e | 627 | IP4_INTERFACE *IpIf;\r |
628 | IP4_ROUTE_TABLE *RouteTable;\r | |
772db4bb | 629 | \r |
1f6729ff | 630 | BOOLEAN IsDhcp4;\r |
772db4bb | 631 | \r |
1f6729ff | 632 | IsDhcp4 = FALSE;\r |
633 | \r | |
772db4bb | 634 | NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiManagedNetworkProtocolGuid);\r |
772db4bb | 635 | if (NicHandle == NULL) {\r |
636 | NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiArpProtocolGuid);\r | |
216f7970 | 637 | if (NicHandle == NULL) {\r |
1f6729ff | 638 | NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiDhcp4ProtocolGuid);\r |
639 | if (NicHandle != NULL) {\r | |
640 | IsDhcp4 = TRUE; \r | |
641 | } else {\r | |
642 | return EFI_SUCCESS;\r | |
643 | }\r | |
216f7970 | 644 | }\r |
772db4bb | 645 | }\r |
1f6729ff | 646 | \r |
772db4bb | 647 | Status = gBS->OpenProtocol (\r |
648 | NicHandle,\r | |
649 | &gEfiIp4ServiceBindingProtocolGuid,\r | |
650 | (VOID **) &ServiceBinding,\r | |
651 | This->DriverBindingHandle,\r | |
652 | NicHandle,\r | |
653 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
654 | );\r | |
772db4bb | 655 | if (EFI_ERROR (Status)) {\r |
656 | return EFI_DEVICE_ERROR;\r | |
657 | }\r | |
1f6729ff | 658 | \r |
659 | IpSb = IP4_SERVICE_FROM_PROTOCOL (ServiceBinding);\r | |
772db4bb | 660 | \r |
1f6729ff | 661 | if (IsDhcp4) {\r |
662 | Status = Ip4Config2DestroyDhcp4 (&IpSb->Ip4Config2Instance);\r | |
663 | gBS->CloseEvent (IpSb->Ip4Config2Instance.Dhcp4Event);\r | |
664 | IpSb->Ip4Config2Instance.Dhcp4Event = NULL;\r | |
665 | } else if (NumberOfChildren != 0) {\r | |
216f7970 | 666 | List = &IpSb->Children;\r |
667 | Context.ServiceBinding = ServiceBinding;\r | |
668 | Context.NumberOfChildren = NumberOfChildren;\r | |
669 | Context.ChildHandleBuffer = ChildHandleBuffer;\r | |
670 | Status = NetDestroyLinkList (\r | |
671 | List,\r | |
672 | Ip4DestroyChildEntryInHandleBuffer,\r | |
673 | &Context,\r | |
674 | NULL\r | |
675 | );\r | |
d0ccf55e | 676 | } else if (IpSb->DefaultInterface->ArpHandle == ControllerHandle) {\r |
1f6729ff | 677 | \r |
d0ccf55e | 678 | //\r |
679 | // The ARP protocol for the default interface is being uninstalled and all\r | |
680 | // its IP child handles should have been destroyed before. So, release the\r | |
681 | // default interface and route table, create a new one and mark it as not started.\r | |
682 | //\r | |
683 | Ip4CancelReceive (IpSb->DefaultInterface);\r | |
684 | Ip4FreeInterface (IpSb->DefaultInterface, NULL);\r | |
685 | Ip4FreeRouteTable (IpSb->DefaultRouteTable);\r | |
686 | \r | |
687 | IpIf = Ip4CreateInterface (IpSb->Mnp, IpSb->Controller, IpSb->Image);\r | |
688 | if (IpIf == NULL) {\r | |
689 | goto ON_ERROR;\r | |
690 | }\r | |
691 | RouteTable = Ip4CreateRouteTable ();\r | |
692 | if (RouteTable == NULL) {\r | |
693 | Ip4FreeInterface (IpIf, NULL);\r | |
694 | goto ON_ERROR;;\r | |
695 | }\r | |
696 | \r | |
697 | IpSb->DefaultInterface = IpIf;\r | |
698 | InsertHeadList (&IpSb->Interfaces, &IpIf->Link);\r | |
699 | IpSb->DefaultRouteTable = RouteTable;\r | |
700 | Ip4ReceiveFrame (IpIf, NULL, Ip4AccpetFrame, IpSb);\r | |
701 | \r | |
d0ccf55e | 702 | IpSb->State = IP4_SERVICE_UNSTARTED;\r |
1f6729ff | 703 | \r |
216f7970 | 704 | } else if (IsListEmpty (&IpSb->Children)) {\r |
c4a62a12 | 705 | State = IpSb->State;\r |
75dce340 | 706 | IpSb->State = IP4_SERVICE_DESTROY;\r |
772db4bb | 707 | \r |
c4a62a12 | 708 | //\r |
709 | // OK, clean other resources then uninstall the service binding protocol.\r | |
710 | //\r | |
711 | Status = Ip4CleanService (IpSb);\r | |
c4a62a12 | 712 | if (EFI_ERROR (Status)) {\r |
713 | IpSb->State = State;\r | |
714 | goto ON_ERROR;\r | |
715 | }\r | |
772db4bb | 716 | \r |
1f6729ff | 717 | gBS->UninstallMultipleProtocolInterfaces (\r |
c4a62a12 | 718 | NicHandle,\r |
719 | &gEfiIp4ServiceBindingProtocolGuid,\r | |
1f6729ff | 720 | ServiceBinding,\r |
721 | &gEfiIp4Config2ProtocolGuid,\r | |
722 | &IpSb->Ip4Config2Instance.Ip4Config2,\r | |
723 | NULL\r | |
c4a62a12 | 724 | );\r |
216f7970 | 725 | \r |
726 | if (gIp4ControllerNameTable != NULL) {\r | |
727 | FreeUnicodeStringTable (gIp4ControllerNameTable);\r | |
728 | gIp4ControllerNameTable = NULL;\r | |
c4a62a12 | 729 | }\r |
766c7483 | 730 | FreePool (IpSb);\r |
c4a62a12 | 731 | }\r |
772db4bb | 732 | \r |
733 | ON_ERROR:\r | |
772db4bb | 734 | return Status;\r |
735 | }\r | |
736 | \r | |
737 | \r | |
738 | /**\r | |
3e8c18da | 739 | Creates a child handle and installs a protocol.\r |
e2851998 | 740 | \r |
741 | The CreateChild() function installs a protocol on ChildHandle.\r | |
742 | If ChildHandle is a pointer to NULL, then a new handle is created and returned in ChildHandle.\r | |
3e8c18da | 743 | If ChildHandle is not a pointer to NULL, then the protocol installs on the existing ChildHandle.\r |
772db4bb | 744 | \r |
3e8c18da | 745 | @param This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.\r |
746 | @param ChildHandle Pointer to the handle of the child to create. If it is NULL,\r | |
e2851998 | 747 | then a new handle is created. If it is a pointer to an existing UEFI handle,\r |
3e8c18da | 748 | then the protocol is added to the existing UEFI handle.\r |
772db4bb | 749 | \r |
3e8c18da | 750 | @retval EFI_SUCCES The protocol was added to ChildHandle.\r |
5405e9a6 | 751 | @retval EFI_INVALID_PARAMETER ChildHandle is NULL.\r |
752 | @retval EFI_OUT_OF_RESOURCES There are not enough resources availabe to create\r | |
753 | the child\r | |
754 | @retval other The child handle was not created\r | |
772db4bb | 755 | \r |
756 | **/\r | |
757 | EFI_STATUS\r | |
758 | EFIAPI\r | |
759 | Ip4ServiceBindingCreateChild (\r | |
760 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
5405e9a6 | 761 | IN OUT EFI_HANDLE *ChildHandle\r |
772db4bb | 762 | )\r |
763 | {\r | |
764 | IP4_SERVICE *IpSb;\r | |
765 | IP4_PROTOCOL *IpInstance;\r | |
766 | EFI_TPL OldTpl;\r | |
767 | EFI_STATUS Status;\r | |
768 | VOID *Mnp;\r | |
769 | \r | |
770 | if ((This == NULL) || (ChildHandle == NULL)) {\r | |
771 | return EFI_INVALID_PARAMETER;\r | |
772 | }\r | |
773 | \r | |
774 | IpSb = IP4_SERVICE_FROM_PROTOCOL (This);\r | |
e48e37fc | 775 | IpInstance = AllocatePool (sizeof (IP4_PROTOCOL));\r |
772db4bb | 776 | \r |
777 | if (IpInstance == NULL) {\r | |
778 | return EFI_OUT_OF_RESOURCES;\r | |
779 | }\r | |
780 | \r | |
781 | Ip4InitProtocol (IpSb, IpInstance);\r | |
782 | \r | |
783 | //\r | |
784 | // Install Ip4 onto ChildHandle\r | |
785 | //\r | |
786 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
787 | ChildHandle,\r | |
788 | &gEfiIp4ProtocolGuid,\r | |
789 | &IpInstance->Ip4Proto,\r | |
790 | NULL\r | |
791 | );\r | |
792 | \r | |
793 | if (EFI_ERROR (Status)) {\r | |
794 | goto ON_ERROR;\r | |
795 | }\r | |
796 | \r | |
797 | IpInstance->Handle = *ChildHandle;\r | |
798 | \r | |
799 | //\r | |
800 | // Open the Managed Network protocol BY_CHILD.\r | |
801 | //\r | |
802 | Status = gBS->OpenProtocol (\r | |
803 | IpSb->MnpChildHandle,\r | |
804 | &gEfiManagedNetworkProtocolGuid,\r | |
805 | (VOID **) &Mnp,\r | |
806 | gIp4DriverBinding.DriverBindingHandle,\r | |
807 | IpInstance->Handle,\r | |
808 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
809 | );\r | |
810 | if (EFI_ERROR (Status)) {\r | |
811 | gBS->UninstallMultipleProtocolInterfaces (\r | |
812 | ChildHandle,\r | |
813 | &gEfiIp4ProtocolGuid,\r | |
814 | &IpInstance->Ip4Proto,\r | |
815 | NULL\r | |
816 | );\r | |
817 | \r | |
818 | goto ON_ERROR;\r | |
819 | }\r | |
820 | \r | |
821 | //\r | |
822 | // Insert it into the service binding instance.\r | |
823 | //\r | |
e48e37fc | 824 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
772db4bb | 825 | \r |
e48e37fc | 826 | InsertTailList (&IpSb->Children, &IpInstance->Link);\r |
772db4bb | 827 | IpSb->NumChildren++;\r |
828 | \r | |
e48e37fc | 829 | gBS->RestoreTPL (OldTpl);\r |
772db4bb | 830 | \r |
831 | ON_ERROR:\r | |
832 | \r | |
833 | if (EFI_ERROR (Status)) {\r | |
834 | \r | |
835 | Ip4CleanProtocol (IpInstance);\r | |
836 | \r | |
766c7483 | 837 | FreePool (IpInstance);\r |
772db4bb | 838 | }\r |
839 | \r | |
840 | return Status;\r | |
841 | }\r | |
842 | \r | |
843 | \r | |
844 | /**\r | |
3e8c18da | 845 | Destroys a child handle with a protocol installed on it.\r |
e2851998 | 846 | \r |
847 | The DestroyChild() function does the opposite of CreateChild(). It removes a protocol\r | |
848 | that was installed by CreateChild() from ChildHandle. If the removed protocol is the\r | |
3e8c18da | 849 | last protocol on ChildHandle, then ChildHandle is destroyed.\r |
772db4bb | 850 | \r |
3e8c18da | 851 | @param This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.\r |
5405e9a6 | 852 | @param ChildHandle Handle of the child to destroy\r |
853 | \r | |
3e8c18da | 854 | @retval EFI_SUCCES The protocol was removed from ChildHandle.\r |
855 | @retval EFI_UNSUPPORTED ChildHandle does not support the protocol that is being removed.\r | |
284ee2e8 | 856 | @retval EFI_INVALID_PARAMETER Child handle is NULL.\r |
3e8c18da | 857 | @retval EFI_ACCESS_DENIED The protocol could not be removed from the ChildHandle\r |
858 | because its services are being used.\r | |
5405e9a6 | 859 | @retval other The child handle was not destroyed\r |
772db4bb | 860 | \r |
861 | **/\r | |
862 | EFI_STATUS\r | |
863 | EFIAPI\r | |
864 | Ip4ServiceBindingDestroyChild (\r | |
865 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
866 | IN EFI_HANDLE ChildHandle\r | |
867 | )\r | |
868 | {\r | |
869 | EFI_STATUS Status;\r | |
870 | IP4_SERVICE *IpSb;\r | |
871 | IP4_PROTOCOL *IpInstance;\r | |
872 | EFI_IP4_PROTOCOL *Ip4;\r | |
873 | EFI_TPL OldTpl;\r | |
874 | INTN State;\r | |
875 | \r | |
876 | if ((This == NULL) || (ChildHandle == NULL)) {\r | |
877 | return EFI_INVALID_PARAMETER;\r | |
878 | }\r | |
879 | \r | |
880 | //\r | |
881 | // Retrieve the private context data structures\r | |
882 | //\r | |
883 | IpSb = IP4_SERVICE_FROM_PROTOCOL (This);\r | |
884 | \r | |
885 | Status = gBS->OpenProtocol (\r | |
886 | ChildHandle,\r | |
887 | &gEfiIp4ProtocolGuid,\r | |
888 | (VOID **) &Ip4,\r | |
889 | gIp4DriverBinding.DriverBindingHandle,\r | |
890 | ChildHandle,\r | |
891 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
892 | );\r | |
893 | \r | |
894 | if (EFI_ERROR (Status)) {\r | |
895 | return EFI_UNSUPPORTED;\r | |
896 | }\r | |
897 | \r | |
898 | IpInstance = IP4_INSTANCE_FROM_PROTOCOL (Ip4);\r | |
899 | \r | |
900 | if (IpInstance->Service != IpSb) {\r | |
901 | return EFI_INVALID_PARAMETER;\r | |
902 | }\r | |
903 | \r | |
e48e37fc | 904 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
772db4bb | 905 | \r |
906 | //\r | |
75dce340 | 907 | // A child can be destroyed more than once. For example,\r |
908 | // Ip4DriverBindingStop will destroy all of its children.\r | |
909 | // when UDP driver is being stopped, it will destroy all\r | |
772db4bb | 910 | // the IP child it opens.\r |
911 | //\r | |
75dce340 | 912 | if (IpInstance->State == IP4_STATE_DESTROY) {\r |
e48e37fc | 913 | gBS->RestoreTPL (OldTpl);\r |
772db4bb | 914 | return EFI_SUCCESS;\r |
915 | }\r | |
916 | \r | |
917 | State = IpInstance->State;\r | |
75dce340 | 918 | IpInstance->State = IP4_STATE_DESTROY;\r |
772db4bb | 919 | \r |
920 | //\r | |
921 | // Close the Managed Network protocol.\r | |
922 | //\r | |
923 | gBS->CloseProtocol (\r | |
924 | IpSb->MnpChildHandle,\r | |
925 | &gEfiManagedNetworkProtocolGuid,\r | |
926 | gIp4DriverBinding.DriverBindingHandle,\r | |
927 | ChildHandle\r | |
928 | );\r | |
929 | \r | |
216f7970 | 930 | if (IpInstance->Interface != NULL && IpInstance->Interface->Arp != NULL) {\r |
931 | gBS->CloseProtocol (\r | |
932 | IpInstance->Interface->ArpHandle,\r | |
933 | &gEfiArpProtocolGuid,\r | |
934 | gIp4DriverBinding.DriverBindingHandle,\r | |
935 | ChildHandle\r | |
936 | );\r | |
937 | }\r | |
938 | \r | |
772db4bb | 939 | //\r |
940 | // Uninstall the IP4 protocol first. Many thing happens during\r | |
941 | // this:\r | |
942 | // 1. The consumer of the IP4 protocol will be stopped if it\r | |
943 | // opens the protocol BY_DRIVER. For eaxmple, if MNP driver is\r | |
944 | // stopped, IP driver's stop function will be called, and uninstall\r | |
945 | // EFI_IP4_PROTOCOL will trigger the UDP's stop function. This\r | |
946 | // makes it possible to create the network stack bottom up, and\r | |
947 | // stop it top down.\r | |
948 | // 2. the upper layer will recycle the received packet. The recycle\r | |
949 | // event's TPL is higher than this function. The recycle events\r | |
950 | // will be called back before preceeding. If any packets not recycled,\r | |
951 | // that means there is a resource leak.\r | |
952 | //\r | |
216f7970 | 953 | gBS->RestoreTPL (OldTpl);\r |
772db4bb | 954 | Status = gBS->UninstallProtocolInterface (\r |
955 | ChildHandle,\r | |
956 | &gEfiIp4ProtocolGuid,\r | |
957 | &IpInstance->Ip4Proto\r | |
958 | );\r | |
216f7970 | 959 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
772db4bb | 960 | if (EFI_ERROR (Status)) {\r |
961 | goto ON_ERROR;\r | |
962 | }\r | |
963 | \r | |
964 | Status = Ip4CleanProtocol (IpInstance);\r | |
772db4bb | 965 | if (EFI_ERROR (Status)) {\r |
966 | gBS->InstallMultipleProtocolInterfaces (\r | |
967 | &ChildHandle,\r | |
968 | &gEfiIp4ProtocolGuid,\r | |
969 | Ip4,\r | |
970 | NULL\r | |
971 | );\r | |
972 | \r | |
973 | goto ON_ERROR;\r | |
974 | }\r | |
975 | \r | |
e48e37fc | 976 | RemoveEntryList (&IpInstance->Link);\r |
772db4bb | 977 | IpSb->NumChildren--;\r |
978 | \r | |
e48e37fc | 979 | gBS->RestoreTPL (OldTpl);\r |
772db4bb | 980 | \r |
766c7483 | 981 | FreePool (IpInstance);\r |
772db4bb | 982 | return EFI_SUCCESS;\r |
983 | \r | |
984 | ON_ERROR:\r | |
985 | IpInstance->State = State;\r | |
e48e37fc | 986 | gBS->RestoreTPL (OldTpl);\r |
772db4bb | 987 | \r |
988 | return Status;\r | |
989 | }\r |