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a3bcde70 HT |
1 | /** @file\r |
2 | The driver binding and service binding protocol for IP6 driver.\r | |
3 | \r | |
f75a7f56 | 4 | Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>\r |
c79de074 | 5 | (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>\r |
a3bcde70 HT |
6 | \r |
7 | This program and the accompanying materials\r | |
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 | |
15 | **/\r | |
16 | \r | |
17 | #include "Ip6Impl.h"\r | |
18 | \r | |
19 | EFI_DRIVER_BINDING_PROTOCOL gIp6DriverBinding = {\r | |
20 | Ip6DriverBindingSupported,\r | |
21 | Ip6DriverBindingStart,\r | |
22 | Ip6DriverBindingStop,\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 | |
c79de074 SEHM |
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 | |
9a04dcff | 44 | EFI_STATUS Status;\r |
c79de074 | 45 | //\r |
9a04dcff FS |
46 | // Test if protocol was even found.\r |
47 | // Notification function will be called at least once.\r | |
c79de074 | 48 | //\r |
b80a4097 | 49 | Status = gBS->LocateProtocol (&gEfiIpSec2ProtocolGuid, NULL, (VOID **)&mIpSec);\r |
9a04dcff FS |
50 | if (Status == EFI_SUCCESS && mIpSec != NULL) {\r |
51 | //\r | |
52 | // Close the event so it does not get called again.\r | |
53 | //\r | |
54 | gBS->CloseEvent (Event);\r | |
c79de074 | 55 | \r |
9a04dcff FS |
56 | mIpSec2Installed = TRUE;\r |
57 | }\r | |
c79de074 SEHM |
58 | }\r |
59 | \r | |
a3bcde70 HT |
60 | /**\r |
61 | This is the declaration of an EFI image entry point. This entry point is\r | |
62 | the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including\r | |
63 | both device drivers and bus drivers.\r | |
64 | \r | |
65 | The entry point for IP6 driver which installs the driver\r | |
66 | binding and component name protocol on its image.\r | |
67 | \r | |
68 | @param[in] ImageHandle The firmware allocated handle for the UEFI image.\r | |
69 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
70 | \r | |
71 | @retval EFI_SUCCESS The operation completed successfully.\r | |
72 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
73 | \r | |
74 | **/\r | |
75 | EFI_STATUS\r | |
76 | EFIAPI\r | |
77 | Ip6DriverEntryPoint (\r | |
78 | IN EFI_HANDLE ImageHandle,\r | |
79 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
80 | )\r | |
81 | {\r | |
c79de074 SEHM |
82 | VOID *Registration;\r |
83 | \r | |
84 | EfiCreateProtocolNotifyEvent (\r | |
85 | &gEfiIpSec2ProtocolGuid,\r | |
86 | TPL_CALLBACK,\r | |
87 | IpSec2InstalledCallback,\r | |
88 | NULL,\r | |
89 | &Registration\r | |
90 | );\r | |
91 | \r | |
a3bcde70 HT |
92 | return EfiLibInstallDriverBindingComponentName2 (\r |
93 | ImageHandle,\r | |
94 | SystemTable,\r | |
95 | &gIp6DriverBinding,\r | |
96 | ImageHandle,\r | |
97 | &gIp6ComponentName,\r | |
98 | &gIp6ComponentName2\r | |
99 | );\r | |
100 | }\r | |
101 | \r | |
102 | /**\r | |
103 | Test to see if this driver supports ControllerHandle.\r | |
104 | \r | |
105 | @param[in] This Protocol instance pointer.\r | |
106 | @param[in] ControllerHandle Handle of device to test.\r | |
107 | @param[in] RemainingDevicePath Optional parameter use to pick a specific child\r | |
108 | device to start.\r | |
109 | \r | |
110 | @retval EFI_SUCCESS This driver supports this device.\r | |
111 | @retval EFI_ALREADY_STARTED This driver is already running on this device.\r | |
112 | @retval other This driver does not support this device.\r | |
113 | \r | |
114 | **/\r | |
115 | EFI_STATUS\r | |
116 | EFIAPI\r | |
117 | Ip6DriverBindingSupported (\r | |
118 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
119 | IN EFI_HANDLE ControllerHandle,\r | |
120 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r | |
121 | )\r | |
122 | {\r | |
123 | //\r | |
124 | // Test for the MNP service binding Protocol\r | |
125 | //\r | |
126 | return gBS->OpenProtocol (\r | |
127 | ControllerHandle,\r | |
128 | &gEfiManagedNetworkServiceBindingProtocolGuid,\r | |
129 | NULL,\r | |
130 | This->DriverBindingHandle,\r | |
131 | ControllerHandle,\r | |
132 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
133 | );\r | |
134 | }\r | |
135 | \r | |
136 | /**\r | |
137 | Clean up an IP6 service binding instance. It releases all\r | |
138 | the resource allocated by the instance. The instance may be\r | |
139 | partly initialized, or partly destroyed. If a resource is\r | |
75dce340 | 140 | destroyed, it is marked as that in case the destroy failed and\r |
a3bcde70 HT |
141 | being called again later.\r |
142 | \r | |
143 | @param[in] IpSb The IP6 service binding instance to clean up.\r | |
144 | \r | |
145 | @retval EFI_SUCCESS The resource used by the instance are cleaned up.\r | |
146 | @retval Others Failed to clean up some of the resources.\r | |
147 | \r | |
148 | **/\r | |
149 | EFI_STATUS\r | |
150 | Ip6CleanService (\r | |
151 | IN IP6_SERVICE *IpSb\r | |
152 | )\r | |
153 | {\r | |
154 | EFI_STATUS Status;\r | |
155 | EFI_IPv6_ADDRESS AllNodes;\r | |
156 | IP6_NEIGHBOR_ENTRY *NeighborCache;\r | |
157 | \r | |
5c944a65 FS |
158 | IpSb->State = IP6_SERVICE_DESTROY;\r |
159 | \r | |
160 | if (IpSb->Timer != NULL) {\r | |
161 | gBS->SetTimer (IpSb->Timer, TimerCancel, 0);\r | |
162 | gBS->CloseEvent (IpSb->Timer);\r | |
163 | \r | |
164 | IpSb->Timer = NULL;\r | |
165 | }\r | |
166 | \r | |
167 | if (IpSb->FasterTimer != NULL) {\r | |
168 | gBS->SetTimer (IpSb->FasterTimer, TimerCancel, 0);\r | |
169 | gBS->CloseEvent (IpSb->FasterTimer);\r | |
170 | \r | |
171 | IpSb->FasterTimer = NULL;\r | |
172 | }\r | |
173 | \r | |
a3bcde70 HT |
174 | Ip6ConfigCleanInstance (&IpSb->Ip6ConfigInstance);\r |
175 | \r | |
216f7970 | 176 | if (!IpSb->LinkLocalDadFail) {\r |
177 | //\r | |
178 | // Leave link-scope all-nodes multicast address (FF02::1)\r | |
179 | //\r | |
180 | Ip6SetToAllNodeMulticast (FALSE, IP6_LINK_LOCAL_SCOPE, &AllNodes);\r | |
a3bcde70 | 181 | \r |
216f7970 | 182 | Status = Ip6LeaveGroup (IpSb, &AllNodes);\r |
183 | if (EFI_ERROR (Status)) {\r | |
184 | return Status;\r | |
f75a7f56 | 185 | }\r |
a3bcde70 HT |
186 | }\r |
187 | \r | |
188 | if (IpSb->DefaultInterface != NULL) {\r | |
189 | Ip6CleanInterface (IpSb->DefaultInterface, NULL);\r | |
190 | IpSb->DefaultInterface = NULL;\r | |
191 | }\r | |
192 | \r | |
193 | Ip6CleanDefaultRouterList (IpSb);\r | |
194 | \r | |
195 | Ip6CleanPrefixListTable (IpSb, &IpSb->OnlinkPrefix);\r | |
196 | Ip6CleanPrefixListTable (IpSb, &IpSb->AutonomousPrefix);\r | |
197 | \r | |
198 | if (IpSb->RouteTable != NULL) {\r | |
199 | Ip6CleanRouteTable (IpSb->RouteTable);\r | |
200 | IpSb->RouteTable = NULL;\r | |
201 | }\r | |
202 | \r | |
203 | if (IpSb->InterfaceId != NULL) {\r | |
204 | FreePool (IpSb->InterfaceId);\r | |
205 | }\r | |
206 | \r | |
207 | IpSb->InterfaceId = NULL;\r | |
208 | \r | |
209 | Ip6CleanAssembleTable (&IpSb->Assemble);\r | |
210 | \r | |
211 | if (IpSb->MnpChildHandle != NULL) {\r | |
212 | if (IpSb->Mnp != NULL) {\r | |
213 | IpSb->Mnp->Cancel (IpSb->Mnp, NULL);\r | |
214 | IpSb->Mnp->Configure (IpSb->Mnp, NULL);\r | |
215 | gBS->CloseProtocol (\r | |
216 | IpSb->MnpChildHandle,\r | |
217 | &gEfiManagedNetworkProtocolGuid,\r | |
218 | IpSb->Image,\r | |
219 | IpSb->Controller\r | |
220 | );\r | |
221 | \r | |
222 | IpSb->Mnp = NULL;\r | |
223 | }\r | |
224 | \r | |
225 | NetLibDestroyServiceChild (\r | |
226 | IpSb->Controller,\r | |
227 | IpSb->Image,\r | |
228 | &gEfiManagedNetworkServiceBindingProtocolGuid,\r | |
229 | IpSb->MnpChildHandle\r | |
230 | );\r | |
231 | \r | |
232 | IpSb->MnpChildHandle = NULL;\r | |
233 | }\r | |
234 | \r | |
235 | if (IpSb->RecvRequest.MnpToken.Event != NULL) {\r | |
236 | gBS->CloseEvent (IpSb->RecvRequest.MnpToken.Event);\r | |
237 | }\r | |
238 | \r | |
a3bcde70 HT |
239 | //\r |
240 | // Free the Neighbor Discovery resources\r | |
241 | //\r | |
242 | while (!IsListEmpty (&IpSb->NeighborTable)) {\r | |
243 | NeighborCache = NET_LIST_HEAD (&IpSb->NeighborTable, IP6_NEIGHBOR_ENTRY, Link);\r | |
244 | Ip6FreeNeighborEntry (IpSb, NeighborCache, FALSE, TRUE, EFI_SUCCESS, NULL, NULL);\r | |
245 | }\r | |
246 | \r | |
247 | return EFI_SUCCESS;\r | |
248 | }\r | |
249 | \r | |
250 | /**\r | |
251 | Create a new IP6 driver service binding protocol.\r | |
252 | \r | |
253 | @param[in] Controller The controller that has MNP service binding\r | |
254 | installed.\r | |
255 | @param[in] ImageHandle The IP6 driver's image handle.\r | |
256 | @param[out] Service The variable to receive the newly created IP6\r | |
257 | service.\r | |
258 | \r | |
259 | @retval EFI_OUT_OF_RESOURCES Failed to allocate some resources.\r | |
260 | @retval EFI_SUCCESS A new IP6 service binding private is created.\r | |
261 | \r | |
262 | **/\r | |
263 | EFI_STATUS\r | |
264 | Ip6CreateService (\r | |
265 | IN EFI_HANDLE Controller,\r | |
266 | IN EFI_HANDLE ImageHandle,\r | |
267 | OUT IP6_SERVICE **Service\r | |
268 | )\r | |
269 | {\r | |
270 | IP6_SERVICE *IpSb;\r | |
271 | EFI_STATUS Status;\r | |
272 | EFI_MANAGED_NETWORK_COMPLETION_TOKEN *MnpToken;\r | |
273 | EFI_MANAGED_NETWORK_CONFIG_DATA *Config;\r | |
a3bcde70 HT |
274 | \r |
275 | ASSERT (Service != NULL);\r | |
276 | \r | |
277 | *Service = NULL;\r | |
278 | \r | |
279 | //\r | |
280 | // allocate a service private data then initialize all the filed to\r | |
281 | // empty resources, so if any thing goes wrong when allocating\r | |
282 | // resources, Ip6CleanService can be called to clean it up.\r | |
283 | //\r | |
284 | IpSb = AllocateZeroPool (sizeof (IP6_SERVICE));\r | |
285 | \r | |
286 | if (IpSb == NULL) {\r | |
287 | return EFI_OUT_OF_RESOURCES;\r | |
288 | }\r | |
289 | \r | |
290 | IpSb->Signature = IP6_SERVICE_SIGNATURE;\r | |
291 | IpSb->ServiceBinding.CreateChild = Ip6ServiceBindingCreateChild;\r | |
292 | IpSb->ServiceBinding.DestroyChild = Ip6ServiceBindingDestroyChild;\r | |
293 | IpSb->State = IP6_SERVICE_UNSTARTED;\r | |
a3bcde70 HT |
294 | \r |
295 | IpSb->NumChildren = 0;\r | |
296 | InitializeListHead (&IpSb->Children);\r | |
297 | \r | |
298 | InitializeListHead (&IpSb->Interfaces);\r | |
299 | IpSb->DefaultInterface = NULL;\r | |
300 | IpSb->RouteTable = NULL;\r | |
301 | \r | |
302 | IpSb->RecvRequest.Signature = IP6_LINK_RX_SIGNATURE;\r | |
303 | IpSb->RecvRequest.CallBack = NULL;\r | |
304 | IpSb->RecvRequest.Context = NULL;\r | |
305 | MnpToken = &IpSb->RecvRequest.MnpToken;\r | |
306 | MnpToken->Event = NULL;\r | |
307 | MnpToken->Status = EFI_NOT_READY;\r | |
308 | MnpToken->Packet.RxData = NULL;\r | |
309 | \r | |
310 | Ip6CreateAssembleTable (&IpSb->Assemble);\r | |
311 | \r | |
312 | IpSb->MldCtrl.Mldv1QuerySeen = 0;\r | |
313 | InitializeListHead (&IpSb->MldCtrl.Groups);\r | |
314 | \r | |
315 | ZeroMem (&IpSb->LinkLocalAddr, sizeof (EFI_IPv6_ADDRESS));\r | |
316 | IpSb->LinkLocalOk = FALSE;\r | |
317 | IpSb->LinkLocalDadFail = FALSE;\r | |
318 | IpSb->Dhcp6NeedStart = FALSE;\r | |
319 | IpSb->Dhcp6NeedInfoRequest = FALSE;\r | |
320 | \r | |
321 | IpSb->CurHopLimit = IP6_HOP_LIMIT;\r | |
322 | IpSb->LinkMTU = IP6_MIN_LINK_MTU;\r | |
323 | IpSb->BaseReachableTime = IP6_REACHABLE_TIME;\r | |
324 | Ip6UpdateReachableTime (IpSb);\r | |
325 | //\r | |
326 | // RFC4861 RETRANS_TIMER: 1,000 milliseconds\r | |
327 | //\r | |
328 | IpSb->RetransTimer = IP6_RETRANS_TIMER;\r | |
329 | \r | |
330 | IpSb->RoundRobin = 0;\r | |
331 | \r | |
332 | InitializeListHead (&IpSb->NeighborTable);\r | |
333 | InitializeListHead (&IpSb->DefaultRouterList);\r | |
334 | InitializeListHead (&IpSb->OnlinkPrefix);\r | |
335 | InitializeListHead (&IpSb->AutonomousPrefix);\r | |
336 | \r | |
337 | IpSb->InterfaceIdLen = IP6_IF_ID_LEN;\r | |
338 | IpSb->InterfaceId = NULL;\r | |
339 | \r | |
340 | IpSb->RouterAdvertiseReceived = FALSE;\r | |
341 | IpSb->SolicitTimer = IP6_MAX_RTR_SOLICITATIONS;\r | |
342 | IpSb->Ticks = 0;\r | |
343 | \r | |
344 | IpSb->Image = ImageHandle;\r | |
345 | IpSb->Controller = Controller;\r | |
346 | \r | |
347 | IpSb->MnpChildHandle = NULL;\r | |
348 | IpSb->Mnp = NULL;\r | |
349 | \r | |
350 | Config = &IpSb->MnpConfigData;\r | |
351 | Config->ReceivedQueueTimeoutValue = 0;\r | |
352 | Config->TransmitQueueTimeoutValue = 0;\r | |
353 | Config->ProtocolTypeFilter = IP6_ETHER_PROTO;\r | |
354 | Config->EnableUnicastReceive = TRUE;\r | |
355 | Config->EnableMulticastReceive = TRUE;\r | |
356 | Config->EnableBroadcastReceive = TRUE;\r | |
357 | Config->EnablePromiscuousReceive = FALSE;\r | |
358 | Config->FlushQueuesOnReset = TRUE;\r | |
359 | Config->EnableReceiveTimestamps = FALSE;\r | |
360 | Config->DisableBackgroundPolling = FALSE;\r | |
361 | \r | |
362 | ZeroMem (&IpSb->SnpMode, sizeof (EFI_SIMPLE_NETWORK_MODE));\r | |
363 | \r | |
364 | IpSb->Timer = NULL;\r | |
365 | IpSb->FasterTimer = NULL;\r | |
366 | \r | |
367 | ZeroMem (&IpSb->Ip6ConfigInstance, sizeof (IP6_CONFIG_INSTANCE));\r | |
368 | \r | |
369 | IpSb->MacString = NULL;\r | |
370 | \r | |
371 | //\r | |
372 | // Create various resources. First create the route table, timer\r | |
373 | // event, MNP token event and MNP child.\r | |
374 | //\r | |
375 | \r | |
376 | IpSb->RouteTable = Ip6CreateRouteTable ();\r | |
377 | if (IpSb->RouteTable == NULL) {\r | |
378 | Status = EFI_OUT_OF_RESOURCES;\r | |
379 | goto ON_ERROR;\r | |
380 | }\r | |
381 | \r | |
382 | Status = gBS->CreateEvent (\r | |
383 | EVT_NOTIFY_SIGNAL | EVT_TIMER,\r | |
384 | TPL_CALLBACK,\r | |
385 | Ip6TimerTicking,\r | |
386 | IpSb,\r | |
387 | &IpSb->Timer\r | |
388 | );\r | |
389 | if (EFI_ERROR (Status)) {\r | |
390 | goto ON_ERROR;\r | |
391 | }\r | |
392 | \r | |
393 | Status = gBS->CreateEvent (\r | |
394 | EVT_NOTIFY_SIGNAL | EVT_TIMER,\r | |
395 | TPL_CALLBACK,\r | |
396 | Ip6NdFasterTimerTicking,\r | |
397 | IpSb,\r | |
398 | &IpSb->FasterTimer\r | |
399 | );\r | |
400 | if (EFI_ERROR (Status)) {\r | |
401 | goto ON_ERROR;\r | |
402 | }\r | |
403 | \r | |
404 | Status = NetLibCreateServiceChild (\r | |
405 | Controller,\r | |
406 | ImageHandle,\r | |
407 | &gEfiManagedNetworkServiceBindingProtocolGuid,\r | |
408 | &IpSb->MnpChildHandle\r | |
409 | );\r | |
410 | if (EFI_ERROR (Status)) {\r | |
411 | goto ON_ERROR;\r | |
412 | }\r | |
413 | \r | |
414 | Status = gBS->OpenProtocol (\r | |
415 | IpSb->MnpChildHandle,\r | |
416 | &gEfiManagedNetworkProtocolGuid,\r | |
417 | (VOID **) (&IpSb->Mnp),\r | |
418 | ImageHandle,\r | |
419 | Controller,\r | |
420 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
421 | );\r | |
422 | if (EFI_ERROR (Status)) {\r | |
423 | goto ON_ERROR;\r | |
424 | }\r | |
425 | \r | |
426 | Status = Ip6ServiceConfigMnp (IpSb, TRUE);\r | |
427 | if (EFI_ERROR (Status)) {\r | |
428 | goto ON_ERROR;\r | |
429 | }\r | |
430 | \r | |
431 | Status = IpSb->Mnp->GetModeData (IpSb->Mnp, NULL, &IpSb->SnpMode);\r | |
432 | if (EFI_ERROR (Status)) {\r | |
433 | goto ON_ERROR;\r | |
434 | }\r | |
435 | \r | |
436 | IpSb->MaxPacketSize = IP6_MIN_LINK_MTU - sizeof (EFI_IP6_HEADER);\r | |
437 | if (NetLibGetVlanId (IpSb->Controller) != 0) {\r | |
438 | //\r | |
439 | // This is a VLAN device, reduce MTU by VLAN tag length\r | |
440 | //\r | |
441 | IpSb->MaxPacketSize -= NET_VLAN_TAG_LEN;\r | |
442 | }\r | |
443 | IpSb->OldMaxPacketSize = IpSb->MaxPacketSize;\r | |
444 | \r | |
445 | //\r | |
446 | // Currently only ETHERNET is supported in IPv6 stack, since\r | |
447 | // link local address requires an IEEE 802 48-bit MACs for\r | |
448 | // EUI-64 format interface identifier mapping.\r | |
449 | //\r | |
450 | if (IpSb->SnpMode.IfType != NET_IFTYPE_ETHERNET) {\r | |
451 | Status = EFI_UNSUPPORTED;\r | |
452 | goto ON_ERROR;\r | |
453 | }\r | |
454 | \r | |
455 | Status = Ip6InitMld (IpSb);\r | |
456 | if (EFI_ERROR (Status)) {\r | |
457 | goto ON_ERROR;\r | |
458 | }\r | |
459 | \r | |
8fedfc04 | 460 | Status = NetLibGetMacString (IpSb->Controller, IpSb->Image, &IpSb->MacString);\r |
a3bcde70 HT |
461 | if (EFI_ERROR (Status)) {\r |
462 | goto ON_ERROR;\r | |
463 | }\r | |
464 | \r | |
8fedfc04 | 465 | Status = Ip6ConfigInitInstance (&IpSb->Ip6ConfigInstance);\r |
a3bcde70 HT |
466 | if (EFI_ERROR (Status)) {\r |
467 | goto ON_ERROR;\r | |
468 | }\r | |
469 | \r | |
8fedfc04 YT |
470 | IpSb->DefaultInterface = Ip6CreateInterface (IpSb, TRUE);\r |
471 | if (IpSb->DefaultInterface == NULL) {\r | |
472 | Status = EFI_DEVICE_ERROR;\r | |
473 | goto ON_ERROR;\r | |
474 | }\r | |
a3bcde70 HT |
475 | \r |
476 | Status = gBS->CreateEvent (\r | |
477 | EVT_NOTIFY_SIGNAL,\r | |
478 | TPL_NOTIFY,\r | |
479 | Ip6OnFrameReceived,\r | |
480 | &IpSb->RecvRequest,\r | |
481 | &MnpToken->Event\r | |
482 | );\r | |
483 | if (EFI_ERROR (Status)) {\r | |
484 | goto ON_ERROR;\r | |
485 | }\r | |
486 | \r | |
a3bcde70 HT |
487 | InsertHeadList (&IpSb->Interfaces, &IpSb->DefaultInterface->Link);\r |
488 | \r | |
489 | *Service = IpSb;\r | |
490 | return EFI_SUCCESS;\r | |
491 | \r | |
492 | ON_ERROR:\r | |
493 | Ip6CleanService (IpSb);\r | |
494 | FreePool (IpSb);\r | |
495 | return Status;\r | |
496 | }\r | |
497 | \r | |
498 | \r | |
499 | /**\r | |
500 | Start this driver on ControllerHandle.\r | |
501 | \r | |
502 | @param[in] This Protocol instance pointer.\r | |
503 | @param[in] ControllerHandle Handle of device to bind driver to.\r | |
504 | @param[in] RemainingDevicePath Optional parameter used to pick a specific child\r | |
505 | device to start.\r | |
506 | \r | |
507 | @retval EFI_SUCCES This driver is added to ControllerHandle.\r | |
508 | @retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle.\r | |
509 | @retval other This driver does not support this device.\r | |
510 | \r | |
511 | **/\r | |
512 | EFI_STATUS\r | |
513 | EFIAPI\r | |
514 | Ip6DriverBindingStart (\r | |
515 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
516 | IN EFI_HANDLE ControllerHandle,\r | |
517 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r | |
518 | )\r | |
519 | {\r | |
520 | IP6_SERVICE *IpSb;\r | |
521 | EFI_STATUS Status;\r | |
4720106b JW |
522 | EFI_IP6_CONFIG_PROTOCOL *Ip6Cfg;\r |
523 | IP6_CONFIG_DATA_ITEM *DataItem;\r | |
524 | \r | |
525 | IpSb = NULL;\r | |
526 | Ip6Cfg = NULL;\r | |
527 | DataItem = NULL;\r | |
a3bcde70 HT |
528 | \r |
529 | //\r | |
530 | // Test for the Ip6 service binding protocol\r | |
531 | //\r | |
532 | Status = gBS->OpenProtocol (\r | |
533 | ControllerHandle,\r | |
534 | &gEfiIp6ServiceBindingProtocolGuid,\r | |
535 | NULL,\r | |
536 | This->DriverBindingHandle,\r | |
537 | ControllerHandle,\r | |
538 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
539 | );\r | |
540 | \r | |
541 | if (Status == EFI_SUCCESS) {\r | |
542 | return EFI_ALREADY_STARTED;\r | |
543 | }\r | |
544 | \r | |
545 | Status = Ip6CreateService (ControllerHandle, This->DriverBindingHandle, &IpSb);\r | |
546 | \r | |
547 | if (EFI_ERROR (Status)) {\r | |
548 | return Status;\r | |
549 | }\r | |
550 | \r | |
551 | ASSERT (IpSb != NULL);\r | |
552 | \r | |
4720106b JW |
553 | Ip6Cfg = &IpSb->Ip6ConfigInstance.Ip6Config;\r |
554 | \r | |
a3bcde70 HT |
555 | //\r |
556 | // Install the Ip6ServiceBinding Protocol onto ControlerHandle\r | |
557 | //\r | |
558 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
559 | &ControllerHandle,\r | |
560 | &gEfiIp6ServiceBindingProtocolGuid,\r | |
561 | &IpSb->ServiceBinding,\r | |
562 | &gEfiIp6ConfigProtocolGuid,\r | |
4720106b | 563 | Ip6Cfg,\r |
a3bcde70 HT |
564 | NULL\r |
565 | );\r | |
4720106b JW |
566 | if (EFI_ERROR (Status)) {\r |
567 | goto ON_ERROR;\r | |
568 | }\r | |
569 | \r | |
570 | //\r | |
f75a7f56 | 571 | // Read the config data from NV variable again.\r |
4720106b JW |
572 | // The default data can be changed by other drivers.\r |
573 | //\r | |
574 | Status = Ip6ConfigReadConfigData (IpSb->MacString, &IpSb->Ip6ConfigInstance);\r | |
575 | if (EFI_ERROR (Status)) {\r | |
576 | goto ON_ERROR;\r | |
577 | }\r | |
f75a7f56 | 578 | \r |
4720106b JW |
579 | //\r |
580 | // If there is any default manual address, set it.\r | |
581 | //\r | |
582 | DataItem = &IpSb->Ip6ConfigInstance.DataItem[Ip6ConfigDataTypeManualAddress];\r | |
583 | if (DataItem->Data.Ptr != NULL) {\r | |
584 | Status = Ip6Cfg->SetData (\r | |
585 | Ip6Cfg,\r | |
586 | Ip6ConfigDataTypeManualAddress,\r | |
587 | DataItem->DataSize,\r | |
588 | DataItem->Data.Ptr\r | |
589 | );\r | |
7959b067 | 590 | if (EFI_ERROR(Status) && Status != EFI_NOT_READY) {\r |
4720106b JW |
591 | goto ON_ERROR;\r |
592 | }\r | |
593 | }\r | |
594 | \r | |
595 | //\r | |
596 | // If there is any default gateway address, set it.\r | |
597 | //\r | |
598 | DataItem = &IpSb->Ip6ConfigInstance.DataItem[Ip6ConfigDataTypeGateway];\r | |
599 | if (DataItem->Data.Ptr != NULL) {\r | |
600 | Status = Ip6Cfg->SetData (\r | |
601 | Ip6Cfg,\r | |
602 | Ip6ConfigDataTypeGateway,\r | |
603 | DataItem->DataSize,\r | |
604 | DataItem->Data.Ptr\r | |
605 | );\r | |
606 | if (EFI_ERROR(Status)) {\r | |
607 | goto ON_ERROR;\r | |
608 | }\r | |
609 | }\r | |
a3bcde70 | 610 | \r |
7959b067 JW |
611 | //\r |
612 | // ready to go: start the receiving and timer\r | |
613 | //\r | |
614 | Status = Ip6ReceiveFrame (Ip6AcceptFrame, IpSb);\r | |
615 | if (EFI_ERROR (Status)) {\r | |
616 | goto ON_ERROR;\r | |
617 | }\r | |
8fedfc04 | 618 | \r |
7959b067 JW |
619 | //\r |
620 | // The timer expires every 100 (IP6_TIMER_INTERVAL_IN_MS) milliseconds.\r | |
621 | //\r | |
622 | Status = gBS->SetTimer (\r | |
623 | IpSb->FasterTimer,\r | |
624 | TimerPeriodic,\r | |
625 | TICKS_PER_MS * IP6_TIMER_INTERVAL_IN_MS\r | |
626 | );\r | |
627 | if (EFI_ERROR (Status)) {\r | |
628 | goto ON_ERROR;\r | |
629 | }\r | |
8fedfc04 | 630 | \r |
7959b067 JW |
631 | //\r |
632 | // The timer expires every 1000 (IP6_ONE_SECOND_IN_MS) milliseconds.\r | |
633 | //\r | |
634 | Status = gBS->SetTimer (\r | |
635 | IpSb->Timer,\r | |
636 | TimerPeriodic,\r | |
637 | TICKS_PER_MS * IP6_ONE_SECOND_IN_MS\r | |
638 | );\r | |
639 | if (EFI_ERROR (Status)) {\r | |
640 | goto ON_ERROR;\r | |
f75a7f56 | 641 | }\r |
a3bcde70 | 642 | \r |
7959b067 JW |
643 | //\r |
644 | // Initialize the IP6 ID\r | |
645 | //\r | |
646 | mIp6Id = NET_RANDOM (NetRandomInitSeed ());\r | |
a3bcde70 | 647 | \r |
7959b067 | 648 | return EFI_SUCCESS;\r |
a3bcde70 | 649 | \r |
8fedfc04 YT |
650 | ON_ERROR:\r |
651 | Ip6CleanService (IpSb);\r | |
652 | FreePool (IpSb);\r | |
a3bcde70 HT |
653 | return Status;\r |
654 | }\r | |
655 | \r | |
216f7970 | 656 | /**\r |
657 | Callback function which provided by user to remove one node in NetDestroyLinkList process.\r | |
f75a7f56 | 658 | \r |
216f7970 | 659 | @param[in] Entry The entry to be removed.\r |
660 | @param[in] Context Pointer to the callback context corresponds to the Context in NetDestroyLinkList.\r | |
661 | \r | |
662 | @retval EFI_SUCCESS The entry has been removed successfully.\r | |
663 | @retval Others Fail to remove the entry.\r | |
664 | \r | |
665 | **/\r | |
666 | EFI_STATUS\r | |
1f7eb561 | 667 | EFIAPI\r |
216f7970 | 668 | Ip6DestroyChildEntryInHandleBuffer (\r |
669 | IN LIST_ENTRY *Entry,\r | |
670 | IN VOID *Context\r | |
1f7eb561 | 671 | )\r |
216f7970 | 672 | {\r |
673 | IP6_PROTOCOL *IpInstance;\r | |
674 | EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;\r | |
675 | UINTN NumberOfChildren;\r | |
676 | EFI_HANDLE *ChildHandleBuffer;\r | |
677 | \r | |
678 | if (Entry == NULL || Context == NULL) {\r | |
679 | return EFI_INVALID_PARAMETER;\r | |
680 | }\r | |
681 | \r | |
682 | IpInstance = NET_LIST_USER_STRUCT_S (Entry, IP6_PROTOCOL, Link, IP6_PROTOCOL_SIGNATURE);\r | |
683 | ServiceBinding = ((IP6_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT *) Context)->ServiceBinding;\r | |
684 | NumberOfChildren = ((IP6_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT *) Context)->NumberOfChildren;\r | |
685 | ChildHandleBuffer = ((IP6_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT *) Context)->ChildHandleBuffer;\r | |
686 | \r | |
687 | if (!NetIsInHandleBuffer (IpInstance->Handle, NumberOfChildren, ChildHandleBuffer)) {\r | |
688 | return EFI_SUCCESS;\r | |
689 | }\r | |
690 | \r | |
691 | return ServiceBinding->DestroyChild (ServiceBinding, IpInstance->Handle);\r | |
692 | }\r | |
693 | \r | |
a3bcde70 HT |
694 | /**\r |
695 | Stop this driver on ControllerHandle.\r | |
696 | \r | |
697 | @param[in] This Protocol instance pointer.\r | |
698 | @param[in] ControllerHandle Handle of device to stop driver on.\r | |
699 | @param[in] NumberOfChildren Number of Handles in ChildHandleBuffer. If number\r | |
700 | of children is zero, stop the entire bus driver.\r | |
701 | @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL\r | |
702 | if NumberOfChildren is 0.\r | |
703 | \r | |
704 | @retval EFI_SUCCESS The device was stopped.\r | |
705 | @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r | |
706 | \r | |
707 | **/\r | |
708 | EFI_STATUS\r | |
709 | EFIAPI\r | |
710 | Ip6DriverBindingStop (\r | |
711 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
712 | IN EFI_HANDLE ControllerHandle,\r | |
713 | IN UINTN NumberOfChildren,\r | |
714 | IN EFI_HANDLE *ChildHandleBuffer OPTIONAL\r | |
715 | )\r | |
716 | {\r | |
216f7970 | 717 | EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;\r |
718 | IP6_SERVICE *IpSb;\r | |
719 | EFI_HANDLE NicHandle;\r | |
720 | EFI_STATUS Status;\r | |
721 | LIST_ENTRY *List;\r | |
722 | INTN State;\r | |
723 | BOOLEAN IsDhcp6;\r | |
724 | IP6_DESTROY_CHILD_IN_HANDLE_BUF_CONTEXT Context;\r | |
a3bcde70 HT |
725 | \r |
726 | IsDhcp6 = FALSE;\r | |
216f7970 | 727 | NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiManagedNetworkProtocolGuid);\r |
728 | if (NicHandle == NULL) {\r | |
729 | NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiDhcp6ProtocolGuid);\r | |
730 | if (NicHandle != NULL) {\r | |
731 | IsDhcp6 = TRUE;\r | |
732 | } else {\r | |
733 | return EFI_SUCCESS;\r | |
a3bcde70 HT |
734 | }\r |
735 | }\r | |
736 | \r | |
737 | Status = gBS->OpenProtocol (\r | |
738 | NicHandle,\r | |
739 | &gEfiIp6ServiceBindingProtocolGuid,\r | |
740 | (VOID **) &ServiceBinding,\r | |
741 | This->DriverBindingHandle,\r | |
742 | NicHandle,\r | |
743 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
744 | );\r | |
745 | if (EFI_ERROR (Status)) {\r | |
746 | return EFI_DEVICE_ERROR;\r | |
747 | }\r | |
748 | \r | |
749 | IpSb = IP6_SERVICE_FROM_PROTOCOL (ServiceBinding);\r | |
750 | \r | |
a3bcde70 | 751 | if (IsDhcp6) {\r |
a3bcde70 HT |
752 | Status = Ip6ConfigDestroyDhcp6 (&IpSb->Ip6ConfigInstance);\r |
753 | gBS->CloseEvent (IpSb->Ip6ConfigInstance.Dhcp6Event);\r | |
754 | IpSb->Ip6ConfigInstance.Dhcp6Event = NULL;\r | |
216f7970 | 755 | } else if (NumberOfChildren != 0) {\r |
756 | //\r | |
757 | // NumberOfChildren is not zero, destroy the IP6 children instances in ChildHandleBuffer.\r | |
758 | //\r | |
759 | List = &IpSb->Children;\r | |
760 | Context.ServiceBinding = ServiceBinding;\r | |
761 | Context.NumberOfChildren = NumberOfChildren;\r | |
762 | Context.ChildHandleBuffer = ChildHandleBuffer;\r | |
763 | Status = NetDestroyLinkList (\r | |
764 | List,\r | |
765 | Ip6DestroyChildEntryInHandleBuffer,\r | |
766 | &Context,\r | |
767 | NULL\r | |
768 | );\r | |
769 | } else if (IsListEmpty (&IpSb->Children)) {\r | |
a3bcde70 | 770 | State = IpSb->State;\r |
a3bcde70 HT |
771 | Status = Ip6CleanService (IpSb);\r |
772 | if (EFI_ERROR (Status)) {\r | |
773 | IpSb->State = State;\r | |
774 | goto Exit;\r | |
775 | }\r | |
776 | \r | |
777 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
778 | NicHandle,\r | |
779 | &gEfiIp6ServiceBindingProtocolGuid,\r | |
780 | ServiceBinding,\r | |
781 | &gEfiIp6ConfigProtocolGuid,\r | |
782 | &IpSb->Ip6ConfigInstance.Ip6Config,\r | |
783 | NULL\r | |
784 | );\r | |
785 | ASSERT_EFI_ERROR (Status);\r | |
786 | FreePool (IpSb);\r | |
216f7970 | 787 | Status = EFI_SUCCESS;\r |
a3bcde70 | 788 | }\r |
f75a7f56 | 789 | \r |
a3bcde70 | 790 | Exit:\r |
a3bcde70 HT |
791 | return Status;\r |
792 | }\r | |
793 | \r | |
794 | \r | |
795 | /**\r | |
796 | Creates a child handle with a set of I/O services.\r | |
797 | \r | |
798 | @param[in] This Protocol instance pointer.\r | |
799 | @param[in] ChildHandle Pointer to the handle of the child to create. If\r | |
800 | it is NULL, then a new handle is created. If it\r | |
801 | is not NULL, then the I/O services are added to\r | |
802 | the existing child handle.\r | |
803 | \r | |
804 | @retval EFI_SUCCES The child handle was created with the I/O services.\r | |
c2adf51f | 805 | @retval EFI_OUT_OF_RESOURCES There are not enough resources available to create\r |
a3bcde70 HT |
806 | the child.\r |
807 | @retval other The child handle was not created.\r | |
808 | \r | |
809 | **/\r | |
810 | EFI_STATUS\r | |
811 | EFIAPI\r | |
812 | Ip6ServiceBindingCreateChild (\r | |
813 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
814 | IN EFI_HANDLE *ChildHandle\r | |
815 | )\r | |
816 | {\r | |
817 | IP6_SERVICE *IpSb;\r | |
818 | IP6_PROTOCOL *IpInstance;\r | |
819 | EFI_TPL OldTpl;\r | |
820 | EFI_STATUS Status;\r | |
821 | VOID *Mnp;\r | |
822 | \r | |
823 | if ((This == NULL) || (ChildHandle == NULL)) {\r | |
824 | return EFI_INVALID_PARAMETER;\r | |
825 | }\r | |
826 | \r | |
827 | IpSb = IP6_SERVICE_FROM_PROTOCOL (This);\r | |
828 | \r | |
829 | if (IpSb->LinkLocalDadFail) {\r | |
830 | return EFI_DEVICE_ERROR;\r | |
831 | }\r | |
832 | \r | |
833 | IpInstance = AllocatePool (sizeof (IP6_PROTOCOL));\r | |
834 | \r | |
835 | if (IpInstance == NULL) {\r | |
836 | return EFI_OUT_OF_RESOURCES;\r | |
837 | }\r | |
838 | \r | |
839 | Ip6InitProtocol (IpSb, IpInstance);\r | |
840 | \r | |
841 | //\r | |
842 | // Install Ip6 onto ChildHandle\r | |
843 | //\r | |
844 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
845 | ChildHandle,\r | |
846 | &gEfiIp6ProtocolGuid,\r | |
847 | &IpInstance->Ip6Proto,\r | |
848 | NULL\r | |
849 | );\r | |
850 | if (EFI_ERROR (Status)) {\r | |
851 | goto ON_ERROR;\r | |
852 | }\r | |
853 | \r | |
854 | IpInstance->Handle = *ChildHandle;\r | |
855 | \r | |
856 | //\r | |
857 | // Open the Managed Network protocol BY_CHILD.\r | |
858 | //\r | |
859 | Status = gBS->OpenProtocol (\r | |
860 | IpSb->MnpChildHandle,\r | |
861 | &gEfiManagedNetworkProtocolGuid,\r | |
862 | (VOID **) &Mnp,\r | |
863 | gIp6DriverBinding.DriverBindingHandle,\r | |
864 | IpInstance->Handle,\r | |
865 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
866 | );\r | |
867 | if (EFI_ERROR (Status)) {\r | |
868 | gBS->UninstallMultipleProtocolInterfaces (\r | |
869 | ChildHandle,\r | |
870 | &gEfiIp6ProtocolGuid,\r | |
871 | &IpInstance->Ip6Proto,\r | |
872 | NULL\r | |
873 | );\r | |
874 | \r | |
875 | goto ON_ERROR;\r | |
876 | }\r | |
877 | \r | |
878 | //\r | |
879 | // Insert it into the service binding instance.\r | |
880 | //\r | |
881 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
882 | \r | |
883 | InsertTailList (&IpSb->Children, &IpInstance->Link);\r | |
884 | IpSb->NumChildren++;\r | |
885 | \r | |
886 | gBS->RestoreTPL (OldTpl);\r | |
887 | \r | |
888 | ON_ERROR:\r | |
889 | \r | |
890 | if (EFI_ERROR (Status)) {\r | |
891 | \r | |
892 | Ip6CleanProtocol (IpInstance);\r | |
893 | \r | |
894 | FreePool (IpInstance);\r | |
895 | }\r | |
896 | \r | |
897 | return Status;\r | |
898 | }\r | |
899 | \r | |
900 | /**\r | |
901 | Destroys a child handle with a set of I/O services.\r | |
902 | \r | |
903 | @param[in] This Protocol instance pointer.\r | |
904 | @param[in] ChildHandle Handle of the child to destroy.\r | |
905 | \r | |
906 | @retval EFI_SUCCES The I/O services were removed from the child\r | |
907 | handle.\r | |
908 | @retval EFI_UNSUPPORTED The child handle does not support the I/O services\r | |
909 | that are being removed.\r | |
15ee13fc | 910 | @retval EFI_INVALID_PARAMETER Child handle is NULL.\r |
a3bcde70 HT |
911 | @retval EFI_ACCESS_DENIED The child handle could not be destroyed because\r |
912 | its I/O services are being used.\r | |
913 | @retval other The child handle was not destroyed.\r | |
914 | \r | |
915 | **/\r | |
916 | EFI_STATUS\r | |
917 | EFIAPI\r | |
918 | Ip6ServiceBindingDestroyChild (\r | |
919 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
920 | IN EFI_HANDLE ChildHandle\r | |
921 | )\r | |
922 | {\r | |
923 | EFI_STATUS Status;\r | |
924 | IP6_SERVICE *IpSb;\r | |
925 | IP6_PROTOCOL *IpInstance;\r | |
926 | EFI_IP6_PROTOCOL *Ip6;\r | |
927 | EFI_TPL OldTpl;\r | |
a3bcde70 HT |
928 | \r |
929 | if ((This == NULL) || (ChildHandle == NULL)) {\r | |
930 | return EFI_INVALID_PARAMETER;\r | |
931 | }\r | |
932 | \r | |
933 | //\r | |
934 | // Retrieve the private context data structures\r | |
935 | //\r | |
936 | IpSb = IP6_SERVICE_FROM_PROTOCOL (This);\r | |
937 | \r | |
938 | Status = gBS->OpenProtocol (\r | |
939 | ChildHandle,\r | |
940 | &gEfiIp6ProtocolGuid,\r | |
941 | (VOID **) &Ip6,\r | |
942 | gIp6DriverBinding.DriverBindingHandle,\r | |
943 | ChildHandle,\r | |
944 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
945 | );\r | |
946 | \r | |
947 | if (EFI_ERROR (Status)) {\r | |
948 | return EFI_UNSUPPORTED;\r | |
949 | }\r | |
950 | \r | |
951 | IpInstance = IP6_INSTANCE_FROM_PROTOCOL (Ip6);\r | |
952 | \r | |
953 | if (IpInstance->Service != IpSb) {\r | |
954 | return EFI_INVALID_PARAMETER;\r | |
955 | }\r | |
956 | \r | |
957 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
958 | \r | |
959 | //\r | |
960 | // A child can be destroyed more than once. For example,\r | |
75dce340 | 961 | // Ip6DriverBindingStop will destroy all of its children.\r |
962 | // when UDP driver is being stopped, it will destroy all\r | |
a3bcde70 HT |
963 | // the IP child it opens.\r |
964 | //\r | |
216f7970 | 965 | if (IpInstance->InDestroy) {\r |
a3bcde70 HT |
966 | gBS->RestoreTPL (OldTpl);\r |
967 | return EFI_SUCCESS;\r | |
968 | }\r | |
969 | \r | |
216f7970 | 970 | IpInstance->InDestroy = TRUE;\r |
a3bcde70 HT |
971 | \r |
972 | //\r | |
973 | // Close the Managed Network protocol.\r | |
974 | //\r | |
975 | gBS->CloseProtocol (\r | |
976 | IpSb->MnpChildHandle,\r | |
977 | &gEfiManagedNetworkProtocolGuid,\r | |
978 | gIp6DriverBinding.DriverBindingHandle,\r | |
979 | ChildHandle\r | |
980 | );\r | |
981 | \r | |
982 | //\r | |
983 | // Uninstall the IP6 protocol first. Many thing happens during\r | |
984 | // this:\r | |
985 | // 1. The consumer of the IP6 protocol will be stopped if it\r | |
986 | // opens the protocol BY_DRIVER. For eaxmple, if MNP driver is\r | |
987 | // stopped, IP driver's stop function will be called, and uninstall\r | |
988 | // EFI_IP6_PROTOCOL will trigger the UDP's stop function. This\r | |
989 | // makes it possible to create the network stack bottom up, and\r | |
990 | // stop it top down.\r | |
991 | // 2. the upper layer will recycle the received packet. The recycle\r | |
992 | // event's TPL is higher than this function. The recycle events\r | |
993 | // will be called back before preceeding. If any packets not recycled,\r | |
994 | // that means there is a resource leak.\r | |
995 | //\r | |
216f7970 | 996 | gBS->RestoreTPL (OldTpl);\r |
a3bcde70 HT |
997 | Status = gBS->UninstallProtocolInterface (\r |
998 | ChildHandle,\r | |
999 | &gEfiIp6ProtocolGuid,\r | |
1000 | &IpInstance->Ip6Proto\r | |
1001 | );\r | |
216f7970 | 1002 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
a3bcde70 HT |
1003 | if (EFI_ERROR (Status)) {\r |
1004 | goto ON_ERROR;\r | |
1005 | }\r | |
1006 | \r | |
1007 | Status = Ip6CleanProtocol (IpInstance);\r | |
a3bcde70 HT |
1008 | if (EFI_ERROR (Status)) {\r |
1009 | gBS->InstallMultipleProtocolInterfaces (\r | |
1010 | &ChildHandle,\r | |
1011 | &gEfiIp6ProtocolGuid,\r | |
1012 | Ip6,\r | |
1013 | NULL\r | |
1014 | );\r | |
1015 | \r | |
1016 | goto ON_ERROR;\r | |
1017 | }\r | |
1018 | \r | |
1019 | RemoveEntryList (&IpInstance->Link);\r | |
1020 | ASSERT (IpSb->NumChildren > 0);\r | |
1021 | IpSb->NumChildren--;\r | |
1022 | \r | |
1023 | gBS->RestoreTPL (OldTpl);\r | |
1024 | \r | |
1025 | FreePool (IpInstance);\r | |
1026 | return EFI_SUCCESS;\r | |
1027 | \r | |
1028 | ON_ERROR:\r | |
a3bcde70 HT |
1029 | gBS->RestoreTPL (OldTpl);\r |
1030 | \r | |
1031 | return Status;\r | |
1032 | }\r |