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b2570da8 | 1 | /** @file\r |
402fa70f | 2 | This code implements the IP4Config and NicIp4Config protocols.\r |
b2570da8 | 3 | \r |
b8ff0f16 | 4 | Copyright (c) 2014, Hewlett-Packard Development Company, L.P.<BR>\r |
5f6aee0f | 5 | Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>\r |
e5eed7d3 | 6 | This program and the accompanying materials\r |
b2570da8 | 7 | are licensed and made available under the terms and conditions of the BSD License\r |
402fa70f | 8 | which accompanies this distribution. The full text of the license may be found at<BR>\r |
b2570da8 | 9 | http://opensource.org/licenses/bsd-license.php\r |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
b2570da8 | 14 | **/\r |
15 | \r | |
16 | #include "Ip4Config.h"\r | |
74df5026 | 17 | #include "NicIp4Variable.h"\r |
b2570da8 | 18 | \r |
72ed3d75 | 19 | //\r |
20 | // Ip4 Config Protocol\r | |
21 | //\r | |
22 | GLOBAL_REMOVE_IF_UNREFERENCED EFI_IP4_CONFIG_PROTOCOL mIp4ConfigProtocolTemplate = {\r | |
23 | EfiIp4ConfigStart,\r | |
24 | EfiIp4ConfigStop,\r | |
25 | EfiIp4ConfigGetData\r | |
26 | };\r | |
b2570da8 | 27 | \r |
28 | /**\r | |
c8d8f1e3 | 29 | Get the NIC's configure information from the IP4 configure variable.\r |
b2570da8 | 30 | It will remove the invalid variable.\r |
31 | \r | |
74df5026 | 32 | @param Instance The IP4 CONFIG instance.\r |
b2570da8 | 33 | \r |
34 | @return NULL if no configure for the NIC in the variable, or it is invalid.\r | |
c8d8f1e3 | 35 | Otherwise the pointer to the NIC's IP configure parameter will be returned.\r |
b2570da8 | 36 | \r |
37 | **/\r | |
38 | NIC_IP4_CONFIG_INFO *\r | |
74df5026 | 39 | EfiNicIp4ConfigGetInfo (\r |
40 | IN IP4_CONFIG_INSTANCE *Instance\r | |
b2570da8 | 41 | )\r |
42 | {\r | |
74df5026 | 43 | NIC_IP4_CONFIG_INFO *NicConfig;\r |
b2570da8 | 44 | \r |
45 | //\r | |
74df5026 | 46 | // Read the configuration parameter for this NIC from\r |
b2570da8 | 47 | // the EFI variable\r |
48 | //\r | |
74df5026 | 49 | NicConfig = Ip4ConfigReadVariable (Instance);\r |
50 | if (NicConfig == NULL) {\r | |
b2570da8 | 51 | return NULL;\r |
52 | }\r | |
53 | \r | |
54 | //\r | |
55 | // Validate the configuration, if the configuration is invalid,\r | |
56 | // remove it from the variable.\r | |
57 | //\r | |
74df5026 | 58 | if (!Ip4ConfigIsValid (NicConfig)) {\r |
59 | Ip4ConfigWriteVariable (Instance, NULL);\r | |
b2570da8 | 60 | \r |
74df5026 | 61 | FreePool (NicConfig);\r |
62 | NicConfig = NULL;\r | |
b2570da8 | 63 | }\r |
64 | \r | |
74df5026 | 65 | return NicConfig;\r |
b2570da8 | 66 | }\r |
67 | \r | |
b2570da8 | 68 | /**\r |
d80ea739 | 69 | Set the IP configure parameters for this NIC.\r |
c8d8f1e3 | 70 | \r |
d80ea739 | 71 | If Reconfig is TRUE, the IP driver will be informed to discard current\r |
72 | auto configure parameter and restart the auto configuration process.\r | |
c8d8f1e3 | 73 | If current there is a pending auto configuration, EFI_ALREADY_STARTED is\r |
b2570da8 | 74 | returned. You can only change the configure setting when either\r |
75 | the configure has finished or not started yet. If NicConfig, the\r | |
76 | NIC's configure parameter is removed from the variable.\r | |
77 | \r | |
63886849 | 78 | @param Instance The IP4 CONFIG instance.\r |
d80ea739 | 79 | @param NicConfig The new NIC IP4 configure parameter.\r |
b2570da8 | 80 | @param Reconfig Inform the IP4 driver to restart the auto\r |
d80ea739 | 81 | configuration.\r |
82 | \r | |
83 | @retval EFI_SUCCESS The configure parameter for this NIC was\r | |
84 | set successfully.\r | |
b2570da8 | 85 | @retval EFI_INVALID_PARAMETER This is NULL or the configure parameter is\r |
86 | invalid.\r | |
87 | @retval EFI_ALREADY_STARTED There is a pending auto configuration.\r | |
d80ea739 | 88 | @retval EFI_NOT_FOUND No auto configure parameter is found.\r |
b2570da8 | 89 | \r |
90 | **/\r | |
91 | EFI_STATUS\r | |
92 | EFIAPI\r | |
93 | EfiNicIp4ConfigSetInfo (\r | |
63886849 | 94 | IN IP4_CONFIG_INSTANCE *Instance,\r |
3e8c18da | 95 | IN NIC_IP4_CONFIG_INFO *NicConfig OPTIONAL,\r |
b2570da8 | 96 | IN BOOLEAN Reconfig\r |
97 | )\r | |
98 | {\r | |
74df5026 | 99 | EFI_STATUS Status;\r |
b2570da8 | 100 | \r |
101 | //\r | |
102 | // Validate the parameters\r | |
103 | //\r | |
63886849 | 104 | if (Instance == NULL) {\r |
b2570da8 | 105 | return EFI_INVALID_PARAMETER;\r |
106 | }\r | |
107 | \r | |
b2570da8 | 108 | if ((NicConfig != NULL) && (!Ip4ConfigIsValid (NicConfig) ||\r |
109 | !NIC_ADDR_EQUAL (&NicConfig->NicAddr, &Instance->NicAddr))) {\r | |
110 | return EFI_INVALID_PARAMETER;\r | |
111 | }\r | |
112 | \r | |
113 | if (Instance->State == IP4_CONFIG_STATE_STARTED) {\r | |
114 | return EFI_ALREADY_STARTED;\r | |
115 | }\r | |
116 | \r | |
117 | //\r | |
118 | // Update the parameter in the configure variable\r | |
119 | //\r | |
74df5026 | 120 | Status = Ip4ConfigWriteVariable (Instance, NicConfig);\r |
b2570da8 | 121 | if (EFI_ERROR (Status)) {\r |
122 | return Status;\r | |
123 | }\r | |
124 | \r | |
125 | //\r | |
126 | // Signal the IP4 to run the auto configuration again\r | |
127 | //\r | |
128 | if (Reconfig && (Instance->ReconfigEvent != NULL)) {\r | |
5f6aee0f | 129 | //\r |
130 | // When NicConfig is NULL, NIC IP4 configuration parameter is removed,\r | |
131 | // the auto configuration process should stop running the configuration\r | |
132 | // policy for the EFI IPv4 Protocol driver.\r | |
133 | //\r | |
134 | if (NicConfig == NULL) {\r | |
135 | Instance->DoNotStart = TRUE;\r | |
136 | }\r | |
137 | \r | |
b2570da8 | 138 | Status = gBS->SignalEvent (Instance->ReconfigEvent);\r |
d8d26fb2 | 139 | DispatchDpc ();\r |
b2570da8 | 140 | }\r |
141 | \r | |
8ac1fc05 | 142 | if (NicConfig == NULL) {\r |
143 | return Status;\r | |
144 | }\r | |
9f82599a | 145 | //\r |
146 | // A dedicated timer is used to poll underlying media status.In case of\r | |
147 | // cable swap, a new round auto configuration will be initiated. The timer\r | |
148 | // starts in DHCP policy only. STATIC policy stops the timer.\r | |
149 | // \r | |
150 | if (NicConfig->Source == IP4_CONFIG_SOURCE_DHCP) {\r | |
151 | gBS->SetTimer (Instance->Timer, TimerPeriodic, TICKS_PER_SECOND);\r | |
152 | } else if (NicConfig->Source == IP4_CONFIG_SOURCE_STATIC) {\r | |
153 | gBS->SetTimer (Instance->Timer, TimerCancel, 0);\r | |
154 | }\r | |
155 | \r | |
b2570da8 | 156 | return Status;\r |
157 | }\r | |
158 | \r | |
c8d8f1e3 | 159 | /**\r |
160 | Callback function when DHCP process finished. It will save the\r | |
161 | retrieved IP configure parameter from DHCP to the NVRam.\r | |
162 | \r | |
163 | @param Event The callback event\r | |
164 | @param Context Opaque context to the callback\r | |
165 | \r | |
166 | @return None\r | |
167 | \r | |
168 | **/\r | |
169 | VOID\r | |
170 | EFIAPI\r | |
171 | Ip4ConfigOnDhcp4Complete (\r | |
172 | IN EFI_EVENT Event,\r | |
173 | IN VOID *Context\r | |
174 | )\r | |
175 | {\r | |
176 | IP4_CONFIG_INSTANCE *Instance;\r | |
177 | EFI_DHCP4_MODE_DATA Dhcp4Mode;\r | |
178 | EFI_IP4_IPCONFIG_DATA *Ip4Config;\r | |
179 | EFI_STATUS Status;\r | |
928927dd | 180 | BOOLEAN Permanent;\r |
c8d8f1e3 | 181 | IP4_ADDR Subnet;\r |
182 | IP4_ADDR Ip1;\r | |
183 | IP4_ADDR Ip2;\r | |
184 | \r | |
185 | Instance = (IP4_CONFIG_INSTANCE *) Context;\r | |
186 | ASSERT (Instance->Dhcp4 != NULL);\r | |
187 | \r | |
188 | Instance->State = IP4_CONFIG_STATE_CONFIGURED;\r | |
189 | Instance->Result = EFI_TIMEOUT;\r | |
190 | \r | |
191 | //\r | |
192 | // Get the DHCP retrieved parameters\r | |
193 | //\r | |
194 | Status = Instance->Dhcp4->GetModeData (Instance->Dhcp4, &Dhcp4Mode);\r | |
195 | \r | |
196 | if (EFI_ERROR (Status)) {\r | |
197 | goto ON_EXIT;\r | |
198 | }\r | |
199 | \r | |
200 | if (Dhcp4Mode.State == Dhcp4Bound) {\r | |
201 | //\r | |
202 | // Save the new configuration retrieved by DHCP both in\r | |
203 | // the instance and to NVRam. So, both the IP4 driver and\r | |
204 | // other user can get that address.\r | |
205 | //\r | |
928927dd | 206 | Permanent = FALSE;\r |
c8d8f1e3 | 207 | \r |
208 | if (Instance->NicConfig != NULL) {\r | |
209 | ASSERT (Instance->NicConfig->Source == IP4_CONFIG_SOURCE_DHCP);\r | |
928927dd | 210 | Permanent = Instance->NicConfig->Permanent;\r |
766c7483 | 211 | FreePool (Instance->NicConfig);\r |
c8d8f1e3 | 212 | }\r |
213 | \r | |
214 | Instance->NicConfig = AllocatePool (sizeof (NIC_IP4_CONFIG_INFO) + 2* sizeof (EFI_IP4_ROUTE_TABLE));\r | |
215 | \r | |
216 | if (Instance->NicConfig == NULL) {\r | |
217 | Instance->Result = EFI_OUT_OF_RESOURCES;\r | |
218 | goto ON_EXIT;\r | |
219 | }\r | |
220 | \r | |
221 | Instance->NicConfig->Ip4Info.RouteTable = (EFI_IP4_ROUTE_TABLE *) (Instance->NicConfig + 1);\r | |
222 | \r | |
223 | CopyMem (&Instance->NicConfig->NicAddr, &Instance->NicAddr, sizeof (Instance->NicConfig->NicAddr));\r | |
224 | Instance->NicConfig->Source = IP4_CONFIG_SOURCE_DHCP;\r | |
928927dd | 225 | Instance->NicConfig->Permanent = Permanent;\r |
c8d8f1e3 | 226 | \r |
227 | Ip4Config = &Instance->NicConfig->Ip4Info;\r | |
228 | Ip4Config->StationAddress = Dhcp4Mode.ClientAddress;\r | |
229 | Ip4Config->SubnetMask = Dhcp4Mode.SubnetMask;\r | |
230 | \r | |
231 | //\r | |
232 | // Create a route for the connected network\r | |
233 | //\r | |
234 | Ip4Config->RouteTableSize = 1;\r | |
235 | \r | |
236 | CopyMem (&Ip1, &Dhcp4Mode.ClientAddress, sizeof (IP4_ADDR));\r | |
237 | CopyMem (&Ip2, &Dhcp4Mode.SubnetMask, sizeof (IP4_ADDR));\r | |
238 | \r | |
239 | Subnet = Ip1 & Ip2;\r | |
240 | \r | |
241 | CopyMem (&Ip4Config->RouteTable[0].SubnetAddress, &Subnet, sizeof (EFI_IPv4_ADDRESS));\r | |
242 | CopyMem (&Ip4Config->RouteTable[0].SubnetMask, &Dhcp4Mode.SubnetMask, sizeof (EFI_IPv4_ADDRESS));\r | |
243 | ZeroMem (&Ip4Config->RouteTable[0].GatewayAddress, sizeof (EFI_IPv4_ADDRESS));\r | |
244 | \r | |
245 | //\r | |
246 | // Create a route if there is a default router.\r | |
247 | //\r | |
248 | if (!EFI_IP4_EQUAL (&Dhcp4Mode.RouterAddress, &mZeroIp4Addr)) {\r | |
249 | Ip4Config->RouteTableSize = 2;\r | |
250 | \r | |
251 | ZeroMem (&Ip4Config->RouteTable[1].SubnetAddress, sizeof (EFI_IPv4_ADDRESS));\r | |
252 | ZeroMem (&Ip4Config->RouteTable[1].SubnetMask, sizeof (EFI_IPv4_ADDRESS));\r | |
253 | CopyMem (&Ip4Config->RouteTable[1].GatewayAddress, &Dhcp4Mode.RouterAddress, sizeof (EFI_IPv4_ADDRESS));\r | |
254 | }\r | |
255 | \r | |
256 | Instance->Result = EFI_SUCCESS;\r | |
257 | \r | |
258 | //\r | |
259 | // ignore the return status of EfiNicIp4ConfigSetInfo. Network\r | |
260 | // stack can operate even that failed.\r | |
261 | //\r | |
63886849 | 262 | EfiNicIp4ConfigSetInfo (Instance, Instance->NicConfig, FALSE);\r |
c8d8f1e3 | 263 | }\r |
264 | \r | |
265 | ON_EXIT:\r | |
266 | gBS->SignalEvent (Instance->DoneEvent);\r | |
267 | Ip4ConfigCleanDhcp4 (Instance);\r | |
268 | \r | |
d8d26fb2 | 269 | DispatchDpc ();\r |
c8d8f1e3 | 270 | \r |
271 | return ;\r | |
272 | }\r | |
b2570da8 | 273 | \r |
274 | /**\r | |
402fa70f | 275 | Starts running the configuration policy for the EFI IPv4 Protocol driver.\r |
d80ea739 | 276 | \r |
277 | The Start() function is called to determine and to begin the platform\r | |
278 | configuration policy by the EFI IPv4 Protocol driver. This determination may\r | |
279 | be as simple as returning EFI_UNSUPPORTED if there is no EFI IPv4 Protocol\r | |
280 | driver configuration policy. It may be as involved as loading some defaults\r | |
281 | from nonvolatile storage, downloading dynamic data from a DHCP server, and\r | |
402fa70f | 282 | checking permissions with a site policy server.\r |
d80ea739 | 283 | Starting the configuration policy is just the beginning. It may finish almost\r |
284 | instantly or it may take several minutes before it fails to retrieve configuration\r | |
285 | information from one or more servers. Once the policy is started, drivers\r | |
286 | should use the DoneEvent parameter to determine when the configuration policy\r | |
287 | has completed. EFI_IP4_CONFIG_PROTOCOL.GetData() must then be called to\r | |
402fa70f | 288 | determine if the configuration succeeded or failed.\r |
d80ea739 | 289 | Until the configuration completes successfully, EFI IPv4 Protocol driver instances\r |
402fa70f | 290 | that are attempting to use default configurations must return EFI_NO_MAPPING.\r |
d80ea739 | 291 | Once the configuration is complete, the EFI IPv4 Configuration Protocol driver\r |
292 | signals DoneEvent. The configuration may need to be updated in the future,\r | |
293 | however; in this case, the EFI IPv4 Configuration Protocol driver must signal\r | |
294 | ReconfigEvent, and all EFI IPv4 Protocol driver instances that are using default\r | |
295 | configurations must return EFI_NO_MAPPING until the configuration policy has\r | |
402fa70f | 296 | been rerun.\r |
297 | \r | |
298 | @param This Pointer to the EFI_IP4_CONFIG_PROTOCOL instance.\r | |
d80ea739 | 299 | @param DoneEvent Event that will be signaled when the EFI IPv4\r |
300 | Protocol driver configuration policy completes\r | |
402fa70f | 301 | execution. This event must be of type EVT_NOTIFY_SIGNAL.\r |
d80ea739 | 302 | @param ReconfigEvent Event that will be signaled when the EFI IPv4\r |
303 | Protocol driver configuration needs to be updated.\r | |
402fa70f | 304 | This event must be of type EVT_NOTIFY_SIGNAL.\r |
d80ea739 | 305 | \r |
306 | @retval EFI_SUCCESS The configuration policy for the EFI IPv4 Protocol\r | |
402fa70f | 307 | driver is now running.\r |
308 | @retval EFI_INVALID_PARAMETER One or more of the following parameters is NULL:\r | |
309 | This\r | |
310 | DoneEvent\r | |
311 | ReconfigEvent\r | |
312 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
d80ea739 | 313 | @retval EFI_ALREADY_STARTED The configuration policy for the EFI IPv4 Protocol\r |
402fa70f | 314 | driver was already started.\r |
315 | @retval EFI_DEVICE_ERROR An unexpected system error or network error occurred.\r | |
d80ea739 | 316 | @retval EFI_UNSUPPORTED This interface does not support the EFI IPv4 Protocol\r |
402fa70f | 317 | driver configuration.\r |
b2570da8 | 318 | \r |
319 | **/\r | |
320 | EFI_STATUS\r | |
321 | EFIAPI\r | |
322 | EfiIp4ConfigStart (\r | |
323 | IN EFI_IP4_CONFIG_PROTOCOL *This,\r | |
324 | IN EFI_EVENT DoneEvent,\r | |
325 | IN EFI_EVENT ReconfigEvent\r | |
326 | )\r | |
327 | {\r | |
328 | IP4_CONFIG_INSTANCE *Instance;\r | |
329 | EFI_DHCP4_PROTOCOL *Dhcp4;\r | |
330 | EFI_DHCP4_MODE_DATA Dhcp4Mode;\r | |
331 | EFI_DHCP4_PACKET_OPTION *OptionList[1];\r | |
332 | IP4_CONFIG_DHCP4_OPTION ParaList;\r | |
333 | EFI_STATUS Status;\r | |
334 | UINT32 Source;\r | |
335 | EFI_TPL OldTpl;\r | |
336 | \r | |
337 | if ((This == NULL) || (DoneEvent == NULL) || (ReconfigEvent == NULL)) {\r | |
338 | return EFI_INVALID_PARAMETER;\r | |
339 | }\r | |
340 | \r | |
341 | Instance = IP4_CONFIG_INSTANCE_FROM_IP4CONFIG (This);\r | |
342 | \r | |
e48e37fc | 343 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
b2570da8 | 344 | \r |
345 | if (Instance->State != IP4_CONFIG_STATE_IDLE) {\r | |
346 | Status = EFI_ALREADY_STARTED;\r | |
347 | \r | |
348 | goto ON_EXIT;\r | |
349 | }\r | |
350 | \r | |
351 | Instance->DoneEvent = DoneEvent;\r | |
352 | Instance->ReconfigEvent = ReconfigEvent;\r | |
353 | \r | |
74df5026 | 354 | Instance->NicConfig = EfiNicIp4ConfigGetInfo (Instance);\r |
b2570da8 | 355 | \r |
356 | if (Instance->NicConfig == NULL) {\r | |
5f6aee0f | 357 | if (Instance->DoNotStart) {\r |
358 | Instance->DoNotStart = FALSE;\r | |
359 | Status = EFI_SUCCESS;\r | |
360 | goto ON_EXIT;\r | |
361 | }\r | |
362 | \r | |
b2570da8 | 363 | Source = IP4_CONFIG_SOURCE_DHCP;\r |
364 | } else {\r | |
365 | Source = Instance->NicConfig->Source;\r | |
366 | }\r | |
367 | \r | |
368 | //\r | |
369 | // If the source is static, the auto configuration is done.\r | |
370 | // return now.\r | |
371 | //\r | |
372 | if (Source == IP4_CONFIG_SOURCE_STATIC) {\r | |
373 | Instance->State = IP4_CONFIG_STATE_CONFIGURED;\r | |
374 | Instance->Result = EFI_SUCCESS;\r | |
375 | \r | |
376 | gBS->SignalEvent (Instance->DoneEvent);\r | |
377 | Status = EFI_SUCCESS;\r | |
378 | goto ON_EXIT;\r | |
379 | }\r | |
380 | \r | |
381 | //\r | |
382 | // Start the dhcp process\r | |
383 | //\r | |
384 | ASSERT ((Source == IP4_CONFIG_SOURCE_DHCP) && (Instance->Dhcp4 == NULL));\r | |
385 | \r | |
386 | Status = NetLibCreateServiceChild (\r | |
387 | Instance->Controller,\r | |
388 | Instance->Image,\r | |
389 | &gEfiDhcp4ServiceBindingProtocolGuid,\r | |
390 | &Instance->Dhcp4Handle\r | |
391 | );\r | |
392 | \r | |
393 | if (EFI_ERROR (Status)) {\r | |
394 | goto ON_ERROR;\r | |
395 | }\r | |
396 | \r | |
397 | Status = gBS->OpenProtocol (\r | |
398 | Instance->Dhcp4Handle,\r | |
399 | &gEfiDhcp4ProtocolGuid,\r | |
400 | (VOID **) &Instance->Dhcp4,\r | |
401 | Instance->Image,\r | |
402 | Instance->Controller,\r | |
403 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
404 | );\r | |
405 | \r | |
406 | if (EFI_ERROR (Status)) {\r | |
407 | goto ON_ERROR;\r | |
408 | }\r | |
409 | \r | |
410 | //\r | |
411 | // Check the current DHCP status, if the DHCP process has\r | |
412 | // already finished, return now.\r | |
413 | //\r | |
414 | Dhcp4 = Instance->Dhcp4;\r | |
415 | Status = Dhcp4->GetModeData (Dhcp4, &Dhcp4Mode);\r | |
416 | \r | |
417 | if (EFI_ERROR (Status)) {\r | |
418 | goto ON_ERROR;\r | |
419 | }\r | |
420 | \r | |
421 | if (Dhcp4Mode.State == Dhcp4Bound) {\r | |
422 | Ip4ConfigOnDhcp4Complete (NULL, Instance);\r | |
423 | \r | |
424 | goto ON_EXIT;\r | |
425 | }\r | |
426 | \r | |
427 | //\r | |
428 | // Try to start the DHCP process. Use most of the current\r | |
429 | // DHCP configuration to avoid problems if some DHCP client\r | |
430 | // yields the control of this DHCP service to us.\r | |
431 | //\r | |
432 | ParaList.Head.OpCode = DHCP_TAG_PARA_LIST;\r | |
433 | ParaList.Head.Length = 2;\r | |
434 | ParaList.Head.Data[0] = DHCP_TAG_NETMASK;\r | |
435 | ParaList.Route = DHCP_TAG_ROUTER;\r | |
436 | OptionList[0] = &ParaList.Head;\r | |
437 | Dhcp4Mode.ConfigData.OptionCount = 1;\r | |
438 | Dhcp4Mode.ConfigData.OptionList = OptionList;\r | |
439 | \r | |
440 | Status = Dhcp4->Configure (Dhcp4, &Dhcp4Mode.ConfigData);\r | |
441 | \r | |
442 | if (EFI_ERROR (Status)) {\r | |
443 | goto ON_ERROR;\r | |
444 | }\r | |
445 | \r | |
446 | //\r | |
447 | // Start the DHCP process\r | |
448 | //\r | |
449 | Status = gBS->CreateEvent (\r | |
450 | EVT_NOTIFY_SIGNAL,\r | |
e48e37fc | 451 | TPL_CALLBACK,\r |
b2570da8 | 452 | Ip4ConfigOnDhcp4Complete,\r |
453 | Instance,\r | |
454 | &Instance->Dhcp4Event\r | |
455 | );\r | |
456 | \r | |
457 | if (EFI_ERROR (Status)) {\r | |
458 | goto ON_ERROR;\r | |
459 | }\r | |
460 | \r | |
461 | Status = Dhcp4->Start (Dhcp4, Instance->Dhcp4Event);\r | |
462 | \r | |
463 | if (EFI_ERROR (Status)) {\r | |
464 | goto ON_ERROR;\r | |
465 | }\r | |
466 | \r | |
467 | Instance->State = IP4_CONFIG_STATE_STARTED;\r | |
468 | Instance->Result = EFI_NOT_READY;\r | |
469 | \r | |
470 | ON_ERROR:\r | |
471 | if (EFI_ERROR (Status)) {\r | |
472 | Ip4ConfigCleanConfig (Instance);\r | |
473 | }\r | |
474 | \r | |
475 | ON_EXIT:\r | |
e48e37fc | 476 | gBS->RestoreTPL (OldTpl);\r |
b2570da8 | 477 | \r |
d8d26fb2 | 478 | DispatchDpc ();\r |
7659d0c9 | 479 | \r |
b2570da8 | 480 | return Status;\r |
481 | }\r | |
482 | \r | |
483 | \r | |
484 | /**\r | |
402fa70f | 485 | Stops running the configuration policy for the EFI IPv4 Protocol driver.\r |
d80ea739 | 486 | \r |
487 | The Stop() function stops the configuration policy for the EFI IPv4 Protocol driver.\r | |
402fa70f | 488 | All configuration data will be lost after calling Stop().\r |
b2570da8 | 489 | \r |
402fa70f | 490 | @param This Pointer to the EFI_IP4_CONFIG_PROTOCOL instance.\r |
b2570da8 | 491 | \r |
d80ea739 | 492 | @retval EFI_SUCCESS The configuration policy for the EFI IPv4 Protocol\r |
402fa70f | 493 | driver has been stopped.\r |
b2570da8 | 494 | @retval EFI_INVALID_PARAMETER This is NULL.\r |
d80ea739 | 495 | @retval EFI_NOT_STARTED The configuration policy for the EFI IPv4 Protocol\r |
402fa70f | 496 | driver was not started.\r |
d80ea739 | 497 | \r |
b2570da8 | 498 | **/\r |
499 | EFI_STATUS\r | |
500 | EFIAPI\r | |
501 | EfiIp4ConfigStop (\r | |
502 | IN EFI_IP4_CONFIG_PROTOCOL *This\r | |
503 | )\r | |
504 | {\r | |
505 | IP4_CONFIG_INSTANCE *Instance;\r | |
506 | EFI_STATUS Status;\r | |
507 | EFI_TPL OldTpl;\r | |
508 | \r | |
509 | if (This == NULL) {\r | |
510 | return EFI_INVALID_PARAMETER;\r | |
511 | }\r | |
512 | \r | |
513 | Instance = IP4_CONFIG_INSTANCE_FROM_IP4CONFIG (This);\r | |
514 | \r | |
515 | Status = EFI_SUCCESS;\r | |
e48e37fc | 516 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
b2570da8 | 517 | \r |
518 | if (Instance->State == IP4_CONFIG_STATE_IDLE) {\r | |
519 | Status = EFI_NOT_STARTED;\r | |
520 | goto ON_EXIT;\r | |
521 | }\r | |
522 | \r | |
523 | //\r | |
524 | // Release all the configure parameters. Don't signal the user\r | |
525 | // event. The user wants to abort the configuration, this isn't\r | |
526 | // the configuration done or reconfiguration.\r | |
527 | //\r | |
528 | Ip4ConfigCleanConfig (Instance);\r | |
529 | \r | |
530 | ON_EXIT:\r | |
e48e37fc | 531 | gBS->RestoreTPL (OldTpl);\r |
b2570da8 | 532 | \r |
533 | return Status;\r | |
534 | }\r | |
535 | \r | |
536 | \r | |
537 | /**\r | |
402fa70f | 538 | Returns the default configuration data (if any) for the EFI IPv4 Protocol driver.\r |
539 | \r | |
d80ea739 | 540 | The GetData() function returns the current configuration data for the EFI IPv4\r |
402fa70f | 541 | Protocol driver after the configuration policy has completed.\r |
d80ea739 | 542 | \r |
402fa70f | 543 | @param This Pointer to the EFI_IP4_CONFIG_PROTOCOL instance.\r |
d80ea739 | 544 | @param ConfigDataSize On input, the size of the ConfigData buffer.\r |
545 | On output, the count of bytes that were written\r | |
402fa70f | 546 | into the ConfigData buffer.\r |
d80ea739 | 547 | @param ConfigData Pointer to the EFI IPv4 Configuration Protocol\r |
548 | driver configuration data structure.\r | |
549 | Type EFI_IP4_IPCONFIG_DATA is defined in\r | |
402fa70f | 550 | "Related Definitions" below.\r |
551 | \r | |
552 | @retval EFI_SUCCESS The EFI IPv4 Protocol driver configuration has been returned.\r | |
553 | @retval EFI_INVALID_PARAMETER This is NULL.\r | |
d80ea739 | 554 | @retval EFI_NOT_STARTED The configuration policy for the EFI IPv4 Protocol\r |
402fa70f | 555 | driver is not running.\r |
c8d8f1e3 | 556 | @retval EFI_NOT_READY EFI IPv4 Protocol driver configuration is still running.\r |
557 | @retval EFI_ABORTED EFI IPv4 Protocol driver configuration could not complete.\r | |
558 | Currently not implemented.\r | |
d80ea739 | 559 | @retval EFI_BUFFER_TOO_SMALL *ConfigDataSize is smaller than the configuration\r |
402fa70f | 560 | data buffer or ConfigData is NULL.\r |
b2570da8 | 561 | \r |
562 | **/\r | |
563 | EFI_STATUS\r | |
564 | EFIAPI\r | |
565 | EfiIp4ConfigGetData (\r | |
566 | IN EFI_IP4_CONFIG_PROTOCOL *This,\r | |
567 | IN OUT UINTN *ConfigDataSize,\r | |
568 | OUT EFI_IP4_IPCONFIG_DATA *ConfigData OPTIONAL\r | |
569 | )\r | |
570 | {\r | |
571 | IP4_CONFIG_INSTANCE *Instance;\r | |
572 | NIC_IP4_CONFIG_INFO *NicConfig;\r | |
573 | EFI_STATUS Status;\r | |
574 | EFI_TPL OldTpl;\r | |
575 | UINTN Len;\r | |
576 | \r | |
577 | if ((This == NULL) || (ConfigDataSize == NULL)) {\r | |
578 | return EFI_INVALID_PARAMETER;\r | |
579 | }\r | |
580 | \r | |
581 | Instance = IP4_CONFIG_INSTANCE_FROM_IP4CONFIG (This);\r | |
582 | \r | |
583 | Status = EFI_SUCCESS;\r | |
e48e37fc | 584 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
b2570da8 | 585 | \r |
586 | if (Instance->State == IP4_CONFIG_STATE_IDLE) {\r | |
587 | Status = EFI_NOT_STARTED;\r | |
588 | } else if (Instance->State == IP4_CONFIG_STATE_STARTED) {\r | |
589 | Status = EFI_NOT_READY;\r | |
590 | }\r | |
591 | \r | |
592 | if (EFI_ERROR (Status)) {\r | |
593 | goto ON_EXIT;\r | |
594 | }\r | |
595 | \r | |
596 | //\r | |
597 | // Copy the configure data if auto configuration succeeds.\r | |
598 | //\r | |
599 | Status = Instance->Result;\r | |
600 | \r | |
601 | if (Status == EFI_SUCCESS) {\r | |
602 | ASSERT (Instance->NicConfig != NULL);\r | |
603 | \r | |
604 | NicConfig = Instance->NicConfig;\r | |
605 | Len = SIZEOF_IP4_CONFIG_INFO (&NicConfig->Ip4Info);\r | |
606 | \r | |
607 | if ((*ConfigDataSize < Len) || (ConfigData == NULL)) {\r | |
608 | Status = EFI_BUFFER_TOO_SMALL;\r | |
609 | } else {\r | |
e48e37fc | 610 | CopyMem (ConfigData, &NicConfig->Ip4Info, Len);\r |
7659d0c9 | 611 | Ip4ConfigFixRouteTablePointer (ConfigData);\r |
b2570da8 | 612 | }\r |
613 | \r | |
614 | *ConfigDataSize = Len;\r | |
615 | }\r | |
616 | \r | |
617 | ON_EXIT:\r | |
e48e37fc | 618 | gBS->RestoreTPL (OldTpl);\r |
b2570da8 | 619 | \r |
620 | return Status;\r | |
621 | }\r | |
622 | \r | |
b2570da8 | 623 | /**\r |
624 | Release all the DHCP related resources.\r | |
625 | \r | |
626 | @param This The IP4 configure instance\r | |
627 | \r | |
628 | @return None\r | |
629 | \r | |
630 | **/\r | |
631 | VOID\r | |
632 | Ip4ConfigCleanDhcp4 (\r | |
633 | IN IP4_CONFIG_INSTANCE *This\r | |
634 | )\r | |
635 | {\r | |
636 | if (This->Dhcp4 != NULL) {\r | |
637 | This->Dhcp4->Stop (This->Dhcp4);\r | |
638 | \r | |
639 | gBS->CloseProtocol (\r | |
640 | This->Dhcp4Handle,\r | |
641 | &gEfiDhcp4ProtocolGuid,\r | |
642 | This->Image,\r | |
643 | This->Controller\r | |
644 | );\r | |
645 | \r | |
646 | This->Dhcp4 = NULL;\r | |
647 | }\r | |
648 | \r | |
649 | if (This->Dhcp4Handle != NULL) {\r | |
650 | NetLibDestroyServiceChild (\r | |
651 | This->Controller,\r | |
652 | This->Image,\r | |
653 | &gEfiDhcp4ServiceBindingProtocolGuid,\r | |
654 | This->Dhcp4Handle\r | |
655 | );\r | |
656 | \r | |
657 | This->Dhcp4Handle = NULL;\r | |
658 | }\r | |
659 | \r | |
b8ff0f16 | 660 | if (This->Dhcp4Event != NULL) {\r |
b2570da8 | 661 | gBS->CloseEvent (This->Dhcp4Event);\r |
662 | This->Dhcp4Event = NULL;\r | |
663 | }\r | |
664 | }\r | |
665 | \r | |
666 | \r | |
667 | /**\r | |
7bce0c5a | 668 | Clean up all the configuration parameters.\r |
b2570da8 | 669 | \r |
670 | @param Instance The IP4 configure instance\r | |
671 | \r | |
672 | @return None\r | |
673 | \r | |
674 | **/\r | |
675 | VOID\r | |
676 | Ip4ConfigCleanConfig (\r | |
677 | IN IP4_CONFIG_INSTANCE *Instance\r | |
678 | )\r | |
679 | {\r | |
680 | if (Instance->NicConfig != NULL) {\r | |
766c7483 | 681 | FreePool (Instance->NicConfig);\r |
b2570da8 | 682 | Instance->NicConfig = NULL;\r |
683 | }\r | |
684 | \r | |
685 | Instance->State = IP4_CONFIG_STATE_IDLE;\r | |
686 | Instance->DoneEvent = NULL;\r | |
687 | Instance->ReconfigEvent = NULL;\r | |
688 | \r | |
689 | Ip4ConfigCleanDhcp4 (Instance);\r | |
690 | }\r | |
691 | \r | |
9f82599a | 692 | \r |
693 | /**\r | |
694 | A dedicated timer is used to poll underlying media status. In case of\r | |
695 | cable swap, a new round auto configuration will be initiated. The timer \r | |
696 | will signal the IP4 to run the auto configuration again. IP4 driver will free\r | |
697 | old IP address related resource, such as route table and Interface, then\r | |
698 | initiate a DHCP process by IP4Config->Start to acquire new IP, eventually\r | |
699 | create route table for new IP address.\r | |
700 | \r | |
701 | @param[in] Event The IP4 service instance's heart beat timer.\r | |
702 | @param[in] Context The IP4 service instance.\r | |
703 | \r | |
704 | **/\r | |
705 | VOID\r | |
706 | EFIAPI\r | |
707 | MediaChangeDetect (\r | |
708 | IN EFI_EVENT Event,\r | |
709 | IN VOID *Context\r | |
710 | )\r | |
711 | {\r | |
712 | BOOLEAN OldMediaPresent;\r | |
713 | EFI_STATUS Status;\r | |
714 | EFI_SIMPLE_NETWORK_MODE SnpModeData;\r | |
715 | IP4_CONFIG_INSTANCE *Instance; \r | |
716 | \r | |
717 | Instance = (IP4_CONFIG_INSTANCE *) Context;\r | |
718 | \r | |
719 | OldMediaPresent = Instance->MediaPresent;\r | |
720 | \r | |
721 | //\r | |
722 | // Get fresh mode data from MNP, since underlying media status may change\r | |
723 | //\r | |
724 | Status = Instance->Mnp->GetModeData (Instance->Mnp, NULL, &SnpModeData);\r | |
725 | if (EFI_ERROR (Status) && (Status != EFI_NOT_STARTED)) {\r | |
726 | return;\r | |
727 | }\r | |
728 | \r | |
729 | Instance->MediaPresent = SnpModeData.MediaPresent;\r | |
730 | //\r | |
731 | // Media transimit Unpresent to Present means new link movement is detected.\r | |
732 | //\r | |
733 | if (!OldMediaPresent && Instance->MediaPresent) {\r | |
734 | //\r | |
735 | // Signal the IP4 to run the auto configuration again. IP4 driver will free\r | |
736 | // old IP address related resource, such as route table and Interface, then \r | |
737 | // initiate a DHCP round by IP4Config->Start to acquire new IP, eventually \r | |
738 | // create route table for new IP address.\r | |
739 | //\r | |
740 | if (Instance->ReconfigEvent != NULL) {\r | |
741 | Status = gBS->SignalEvent (Instance->ReconfigEvent);\r | |
742 | DispatchDpc ();\r | |
743 | }\r | |
744 | }\r | |
745 | }\r |