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772db4bb | 1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2006 - 2007, Intel Corporation\r | |
4 | All rights reserved. This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | Dhcp4Impl.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | This file implement the EFI_DHCP4_PROTOCOL interface.\r | |
19 | \r | |
20 | \r | |
21 | **/\r | |
22 | \r | |
23 | \r | |
24 | #include "Dhcp4Impl.h"\r | |
25 | \r | |
26 | \r | |
27 | /**\r | |
28 | Get the current operation parameter and lease for the network interface.\r | |
29 | \r | |
30 | @param This The DHCP protocol instance\r | |
31 | @param Dhcp4ModeData The variable to save the DHCP mode data.\r | |
32 | \r | |
33 | @retval EFI_INVALID_PARAMETER The parameter is invalid\r | |
34 | @retval EFI_SUCCESS The Dhcp4ModeData is updated with the current\r | |
35 | operation parameter.\r | |
36 | \r | |
37 | **/\r | |
38 | STATIC\r | |
39 | EFI_STATUS\r | |
40 | EFIAPI\r | |
41 | EfiDhcp4GetModeData (\r | |
42 | IN EFI_DHCP4_PROTOCOL *This,\r | |
43 | OUT EFI_DHCP4_MODE_DATA *Dhcp4ModeData\r | |
44 | )\r | |
45 | {\r | |
46 | DHCP_PROTOCOL *Instance;\r | |
47 | DHCP_SERVICE *DhcpSb;\r | |
48 | DHCP_PARAMETER *Para;\r | |
49 | EFI_TPL OldTpl;\r | |
50 | IP4_ADDR Ip;\r | |
51 | \r | |
52 | //\r | |
53 | // First validate the parameters.\r | |
54 | //\r | |
55 | if ((This == NULL) || (Dhcp4ModeData == NULL)) {\r | |
56 | return EFI_INVALID_PARAMETER;\r | |
57 | }\r | |
58 | \r | |
59 | Instance = DHCP_INSTANCE_FROM_THIS (This);\r | |
c4a62a12 | 60 | \r |
772db4bb | 61 | OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);\r |
62 | DhcpSb = Instance->Service;\r | |
63 | \r | |
64 | //\r | |
65 | // Caller can use GetModeData to retrieve current DHCP states\r | |
66 | // no matter whether it is the active child or not.\r | |
67 | //\r | |
687a2e5f | 68 | Dhcp4ModeData->State = (EFI_DHCP4_STATE) DhcpSb->DhcpState;\r |
69 | CopyMem (&Dhcp4ModeData->ConfigData, &DhcpSb->ActiveConfig, sizeof (Dhcp4ModeData->ConfigData));\r | |
70 | CopyMem (&Dhcp4ModeData->ClientMacAddress, &DhcpSb->Mac, sizeof (Dhcp4ModeData->ClientMacAddress));\r | |
772db4bb | 71 | \r |
72 | Ip = HTONL (DhcpSb->ClientAddr);\r | |
73 | NetCopyMem (&Dhcp4ModeData->ClientAddress, &Ip, sizeof (EFI_IPv4_ADDRESS));\r | |
74 | \r | |
75 | Ip = HTONL (DhcpSb->Netmask);\r | |
76 | NetCopyMem (&Dhcp4ModeData->SubnetMask, &Ip, sizeof (EFI_IPv4_ADDRESS));\r | |
77 | \r | |
78 | Ip = HTONL (DhcpSb->ServerAddr);\r | |
79 | NetCopyMem (&Dhcp4ModeData->ServerAddress, &Ip, sizeof (EFI_IPv4_ADDRESS));\r | |
80 | \r | |
81 | Para = DhcpSb->Para;\r | |
82 | \r | |
83 | if (Para != NULL) {\r | |
84 | Ip = HTONL (Para->Router);\r | |
85 | NetCopyMem (&Dhcp4ModeData->RouterAddress, &Ip, sizeof (EFI_IPv4_ADDRESS));\r | |
86 | Dhcp4ModeData->LeaseTime = Para->Lease;\r | |
87 | } else {\r | |
88 | NetZeroMem (&Dhcp4ModeData->RouterAddress, sizeof (EFI_IPv4_ADDRESS));\r | |
89 | Dhcp4ModeData->LeaseTime = 0xffffffff;\r | |
90 | }\r | |
91 | \r | |
92 | Dhcp4ModeData->ReplyPacket = DhcpSb->Selected;\r | |
93 | \r | |
94 | NET_RESTORE_TPL (OldTpl);\r | |
95 | return EFI_SUCCESS;\r | |
96 | }\r | |
97 | \r | |
98 | \r | |
99 | /**\r | |
100 | Free the resource related to the configure parameters.\r | |
101 | DHCP driver will make a copy of the user's configure\r | |
102 | such as the time out value.\r | |
103 | \r | |
104 | @param Config The DHCP configure data\r | |
105 | \r | |
106 | @return None\r | |
107 | \r | |
108 | **/\r | |
109 | VOID\r | |
110 | DhcpCleanConfigure (\r | |
111 | IN EFI_DHCP4_CONFIG_DATA *Config\r | |
112 | )\r | |
113 | {\r | |
114 | UINT32 Index;\r | |
115 | \r | |
116 | if (Config->DiscoverTimeout != NULL) {\r | |
117 | NetFreePool (Config->DiscoverTimeout);\r | |
118 | }\r | |
119 | \r | |
120 | if (Config->RequestTimeout != NULL) {\r | |
121 | NetFreePool (Config->RequestTimeout);\r | |
122 | }\r | |
123 | \r | |
124 | if (Config->OptionList != NULL) {\r | |
125 | for (Index = 0; Index < Config->OptionCount; Index++) {\r | |
126 | if (Config->OptionList[Index] != NULL) {\r | |
127 | NetFreePool (Config->OptionList[Index]);\r | |
128 | }\r | |
129 | }\r | |
130 | \r | |
131 | NetFreePool (Config->OptionList);\r | |
132 | }\r | |
133 | \r | |
134 | NetZeroMem (Config, sizeof (EFI_DHCP4_CONFIG_DATA));\r | |
135 | }\r | |
136 | \r | |
137 | \r | |
138 | /**\r | |
139 | Allocate memory for configure parameter such as timeout value for Dst,\r | |
140 | then copy the configure parameter from Src to Dst.\r | |
141 | \r | |
142 | @param Dst The destination DHCP configure data.\r | |
143 | @param Src The source DHCP configure data.\r | |
144 | \r | |
145 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r | |
146 | @retval EFI_SUCCESS The configure is copied.\r | |
147 | \r | |
148 | **/\r | |
149 | EFI_STATUS\r | |
150 | DhcpCopyConfigure (\r | |
151 | IN EFI_DHCP4_CONFIG_DATA *Dst,\r | |
152 | IN EFI_DHCP4_CONFIG_DATA *Src\r | |
153 | )\r | |
154 | {\r | |
155 | EFI_DHCP4_PACKET_OPTION **DstOptions;\r | |
156 | EFI_DHCP4_PACKET_OPTION **SrcOptions;\r | |
157 | INTN Len;\r | |
158 | UINT32 Index;\r | |
159 | \r | |
72030458 | 160 | CopyMem (Dst, Src, sizeof (*Dst));\r |
772db4bb | 161 | Dst->DiscoverTimeout = NULL;\r |
162 | Dst->RequestTimeout = NULL;\r | |
163 | Dst->OptionList = NULL;\r | |
164 | \r | |
165 | //\r | |
166 | // Allocate a memory then copy DiscoverTimeout to it\r | |
167 | //\r | |
168 | if (Src->DiscoverTimeout != NULL) {\r | |
169 | Len = Src->DiscoverTryCount * sizeof (UINT32);\r | |
170 | Dst->DiscoverTimeout = NetAllocatePool (Len);\r | |
171 | \r | |
172 | if (Dst->DiscoverTimeout == NULL) {\r | |
173 | return EFI_OUT_OF_RESOURCES;\r | |
174 | }\r | |
175 | \r | |
176 | for (Index = 0; Index < Src->DiscoverTryCount; Index++) {\r | |
36ee91ca | 177 | Dst->DiscoverTimeout[Index] = MAX (Src->DiscoverTimeout[Index], 1);\r |
772db4bb | 178 | }\r |
179 | }\r | |
180 | \r | |
181 | //\r | |
182 | // Allocate a memory then copy RequestTimeout to it\r | |
183 | //\r | |
184 | if (Src->RequestTimeout != NULL) {\r | |
185 | Len = Src->RequestTryCount * sizeof (UINT32);\r | |
186 | Dst->RequestTimeout = NetAllocatePool (Len);\r | |
187 | \r | |
188 | if (Dst->RequestTimeout == NULL) {\r | |
189 | goto ON_ERROR;\r | |
190 | }\r | |
191 | \r | |
192 | for (Index = 0; Index < Src->RequestTryCount; Index++) {\r | |
36ee91ca | 193 | Dst->RequestTimeout[Index] = MAX (Src->RequestTimeout[Index], 1);\r |
772db4bb | 194 | }\r |
195 | }\r | |
196 | \r | |
197 | //\r | |
198 | // Allocate an array of dhcp option point, then allocate memory\r | |
199 | // for each option and copy the source option to it\r | |
200 | //\r | |
201 | if (Src->OptionList != NULL) {\r | |
202 | Len = Src->OptionCount * sizeof (EFI_DHCP4_PACKET_OPTION *);\r | |
203 | Dst->OptionList = NetAllocateZeroPool (Len);\r | |
204 | \r | |
205 | if (Dst->OptionList == NULL) {\r | |
206 | goto ON_ERROR;\r | |
207 | }\r | |
208 | \r | |
209 | DstOptions = Dst->OptionList;\r | |
210 | SrcOptions = Src->OptionList;\r | |
211 | \r | |
212 | for (Index = 0; Index < Src->OptionCount; Index++) {\r | |
36ee91ca | 213 | Len = sizeof (EFI_DHCP4_PACKET_OPTION) + MAX (SrcOptions[Index]->Length - 1, 0);\r |
772db4bb | 214 | \r |
215 | DstOptions[Index] = NetAllocatePool (Len);\r | |
216 | \r | |
217 | if (DstOptions[Index] == NULL) {\r | |
218 | goto ON_ERROR;\r | |
219 | }\r | |
220 | \r | |
221 | NetCopyMem (DstOptions[Index], SrcOptions[Index], Len);\r | |
222 | }\r | |
223 | }\r | |
224 | \r | |
225 | return EFI_SUCCESS;\r | |
226 | \r | |
227 | ON_ERROR:\r | |
228 | DhcpCleanConfigure (Dst);\r | |
229 | return EFI_OUT_OF_RESOURCES;\r | |
230 | }\r | |
231 | \r | |
232 | \r | |
233 | /**\r | |
234 | Give up the control of the DHCP service to let other child\r | |
235 | resume. Don't change the service's DHCP state and the Client\r | |
236 | address and option list configure as required by RFC2131.\r | |
237 | \r | |
238 | @param DhcpSb The DHCP service instance.\r | |
239 | \r | |
240 | @return None\r | |
241 | \r | |
242 | **/\r | |
243 | VOID\r | |
244 | DhcpYieldControl (\r | |
245 | IN DHCP_SERVICE *DhcpSb\r | |
246 | )\r | |
247 | {\r | |
248 | EFI_DHCP4_CONFIG_DATA *Config;\r | |
772db4bb | 249 | \r |
772db4bb | 250 | Config = &DhcpSb->ActiveConfig;\r |
251 | \r | |
252 | DhcpSb->ServiceState = DHCP_UNCONFIGED;\r | |
253 | DhcpSb->ActiveChild = NULL;\r | |
254 | \r | |
255 | if (Config->DiscoverTimeout != NULL) {\r | |
256 | NetFreePool (Config->DiscoverTimeout);\r | |
257 | \r | |
258 | Config->DiscoverTryCount = 0;\r | |
259 | Config->DiscoverTimeout = NULL;\r | |
260 | }\r | |
261 | \r | |
262 | if (Config->RequestTimeout != NULL) {\r | |
263 | NetFreePool (Config->RequestTimeout);\r | |
264 | \r | |
265 | Config->RequestTryCount = 0;\r | |
266 | Config->RequestTimeout = NULL;\r | |
267 | }\r | |
268 | \r | |
269 | Config->Dhcp4Callback = NULL;\r | |
270 | Config->CallbackContext = NULL;\r | |
271 | }\r | |
272 | \r | |
273 | \r | |
274 | /**\r | |
275 | Configure the DHCP protocol instance and its underlying DHCP service\r | |
276 | for operation. If Dhcp4CfgData is NULL and the child is currently\r | |
277 | controlling the DHCP service, release the control.\r | |
278 | \r | |
279 | @param This The DHCP protocol instance\r | |
280 | @param Dhcp4CfgData The DHCP configure data.\r | |
281 | \r | |
282 | @retval EFI_INVALID_PARAMETER The parameters are invalid.\r | |
283 | @retval EFI_ACCESS_DENIED The service isn't in one of configurable states,\r | |
284 | or there is already an active child.\r | |
285 | @retval EFI_OUT_OF_RESOURCE Failed to allocate some resources.\r | |
286 | @retval EFI_SUCCESS The child is configured.\r | |
287 | \r | |
288 | **/\r | |
289 | STATIC\r | |
290 | EFI_STATUS\r | |
291 | EFIAPI\r | |
292 | EfiDhcp4Configure (\r | |
293 | IN EFI_DHCP4_PROTOCOL *This,\r | |
294 | IN EFI_DHCP4_CONFIG_DATA *Dhcp4CfgData OPTIONAL\r | |
295 | )\r | |
296 | {\r | |
297 | EFI_DHCP4_CONFIG_DATA *Config;\r | |
298 | DHCP_PROTOCOL *Instance;\r | |
299 | DHCP_SERVICE *DhcpSb;\r | |
300 | EFI_STATUS Status;\r | |
301 | EFI_TPL OldTpl;\r | |
302 | UINT32 Index;\r | |
303 | IP4_ADDR Ip;\r | |
304 | \r | |
305 | //\r | |
306 | // First validate the parameters\r | |
307 | //\r | |
308 | if (This == NULL) {\r | |
309 | return EFI_INVALID_PARAMETER;\r | |
310 | }\r | |
311 | \r | |
312 | if (Dhcp4CfgData != NULL) {\r | |
313 | if (Dhcp4CfgData->DiscoverTryCount && (Dhcp4CfgData->DiscoverTimeout == NULL)) {\r | |
314 | return EFI_INVALID_PARAMETER;\r | |
315 | }\r | |
316 | \r | |
317 | if (Dhcp4CfgData->RequestTryCount && (Dhcp4CfgData->RequestTimeout == NULL)) {\r | |
318 | return EFI_INVALID_PARAMETER;\r | |
319 | }\r | |
320 | \r | |
321 | if (Dhcp4CfgData->OptionCount && (Dhcp4CfgData->OptionList == NULL)) {\r | |
322 | return EFI_INVALID_PARAMETER;\r | |
323 | }\r | |
324 | \r | |
325 | NetCopyMem (&Ip, &Dhcp4CfgData->ClientAddress, sizeof (IP4_ADDR));\r | |
326 | \r | |
327 | if ((Ip != 0) && !Ip4IsUnicast (NTOHL (Ip), 0)) {\r | |
328 | \r | |
329 | return EFI_INVALID_PARAMETER;\r | |
330 | }\r | |
331 | }\r | |
332 | \r | |
333 | Instance = DHCP_INSTANCE_FROM_THIS (This);\r | |
334 | \r | |
335 | if (Instance->Signature != DHCP_PROTOCOL_SIGNATURE) {\r | |
336 | return EFI_INVALID_PARAMETER;\r | |
337 | }\r | |
338 | \r | |
339 | OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);\r | |
340 | \r | |
341 | DhcpSb = Instance->Service;\r | |
342 | Config = &DhcpSb->ActiveConfig;\r | |
343 | \r | |
344 | Status = EFI_ACCESS_DENIED;\r | |
345 | \r | |
346 | if ((DhcpSb->DhcpState != Dhcp4Stopped) &&\r | |
347 | (DhcpSb->DhcpState != Dhcp4Init) &&\r | |
348 | (DhcpSb->DhcpState != Dhcp4InitReboot) &&\r | |
349 | (DhcpSb->DhcpState != Dhcp4Bound)) {\r | |
350 | \r | |
351 | goto ON_EXIT;\r | |
352 | }\r | |
353 | \r | |
354 | if ((DhcpSb->ActiveChild != NULL) && (DhcpSb->ActiveChild != Instance)) {\r | |
355 | goto ON_EXIT;\r | |
356 | }\r | |
357 | \r | |
358 | if (Dhcp4CfgData != NULL) {\r | |
359 | Status = EFI_OUT_OF_RESOURCES;\r | |
360 | DhcpCleanConfigure (Config);\r | |
361 | \r | |
362 | if (EFI_ERROR (DhcpCopyConfigure (Config, Dhcp4CfgData))) {\r | |
363 | goto ON_EXIT;\r | |
364 | }\r | |
365 | \r | |
366 | DhcpSb->UserOptionLen = 0;\r | |
367 | \r | |
368 | for (Index = 0; Index < Dhcp4CfgData->OptionCount; Index++) {\r | |
369 | DhcpSb->UserOptionLen += Dhcp4CfgData->OptionList[Index]->Length + 2;\r | |
370 | }\r | |
371 | \r | |
372 | DhcpSb->ActiveChild = Instance;\r | |
373 | \r | |
374 | if (DhcpSb->DhcpState == Dhcp4Stopped) {\r | |
375 | DhcpSb->ClientAddr = EFI_NTOHL (Dhcp4CfgData->ClientAddress);\r | |
376 | \r | |
377 | if (DhcpSb->ClientAddr != 0) {\r | |
378 | DhcpSb->DhcpState = Dhcp4InitReboot;\r | |
379 | } else {\r | |
380 | DhcpSb->DhcpState = Dhcp4Init;\r | |
381 | }\r | |
382 | }\r | |
383 | \r | |
384 | DhcpSb->ServiceState = DHCP_CONFIGED;\r | |
385 | Status = EFI_SUCCESS;\r | |
386 | \r | |
387 | } else if (DhcpSb->ActiveChild == Instance) {\r | |
388 | Status = EFI_SUCCESS;\r | |
389 | DhcpYieldControl (DhcpSb);\r | |
390 | }\r | |
391 | \r | |
392 | ON_EXIT:\r | |
393 | NET_RESTORE_TPL (OldTpl);\r | |
394 | return Status;\r | |
395 | }\r | |
396 | \r | |
397 | \r | |
398 | /**\r | |
399 | Start the DHCP process.\r | |
400 | \r | |
401 | @param This The DHCP protocol instance\r | |
402 | @param CompletionEvent The event to signal is address is acquired.\r | |
403 | \r | |
404 | @retval EFI_INVALID_PARAMETER The parameters are invalid.\r | |
405 | @retval EFI_NOT_STARTED The protocol hasn't been configured.\r | |
406 | @retval EFI_ALREADY_STARTED The DHCP process has already been started.\r | |
407 | @retval EFI_SUCCESS The DHCP process is started.\r | |
408 | \r | |
409 | **/\r | |
410 | STATIC\r | |
411 | EFI_STATUS\r | |
412 | EFIAPI\r | |
413 | EfiDhcp4Start (\r | |
414 | IN EFI_DHCP4_PROTOCOL *This,\r | |
415 | IN EFI_EVENT CompletionEvent OPTIONAL\r | |
416 | )\r | |
417 | {\r | |
418 | DHCP_PROTOCOL *Instance;\r | |
419 | DHCP_SERVICE *DhcpSb;\r | |
420 | EFI_STATUS Status;\r | |
421 | EFI_TPL OldTpl;\r | |
422 | \r | |
423 | //\r | |
424 | // First validate the parameters\r | |
425 | //\r | |
426 | if (This == NULL) {\r | |
427 | return EFI_INVALID_PARAMETER;\r | |
428 | }\r | |
429 | \r | |
430 | Instance = DHCP_INSTANCE_FROM_THIS (This);\r | |
431 | \r | |
432 | if (Instance->Signature != DHCP_PROTOCOL_SIGNATURE) {\r | |
433 | return EFI_INVALID_PARAMETER;\r | |
434 | }\r | |
435 | \r | |
436 | OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);\r | |
437 | DhcpSb = Instance->Service;\r | |
438 | \r | |
439 | if (DhcpSb->DhcpState == Dhcp4Stopped) {\r | |
440 | Status = EFI_NOT_STARTED;\r | |
441 | goto ON_ERROR;\r | |
442 | }\r | |
443 | \r | |
444 | if ((DhcpSb->DhcpState != Dhcp4Init) && (DhcpSb->DhcpState != Dhcp4InitReboot)) {\r | |
445 | Status = EFI_ALREADY_STARTED;\r | |
446 | goto ON_ERROR;\r | |
447 | }\r | |
448 | \r | |
449 | DhcpSb->IoStatus = EFI_ALREADY_STARTED;\r | |
450 | \r | |
451 | if (EFI_ERROR (Status = DhcpInitRequest (DhcpSb))) {\r | |
452 | goto ON_ERROR;\r | |
453 | }\r | |
454 | \r | |
455 | //\r | |
456 | // Start/Restart the receiving.\r | |
457 | //\r | |
458 | Status = UdpIoRecvDatagram (DhcpSb->UdpIo, DhcpInput, DhcpSb, 0);\r | |
459 | \r | |
460 | if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {\r | |
461 | goto ON_ERROR;\r | |
462 | }\r | |
463 | \r | |
464 | Instance->CompletionEvent = CompletionEvent;\r | |
465 | \r | |
466 | //\r | |
467 | // Restore the TPL now, don't call poll function at NET_TPL_LOCK.\r | |
468 | //\r | |
469 | NET_RESTORE_TPL (OldTpl);\r | |
470 | \r | |
471 | if (CompletionEvent == NULL) {\r | |
472 | while (DhcpSb->IoStatus == EFI_ALREADY_STARTED) {\r | |
473 | DhcpSb->UdpIo->Udp->Poll (DhcpSb->UdpIo->Udp);\r | |
474 | }\r | |
475 | \r | |
476 | return DhcpSb->IoStatus;\r | |
477 | }\r | |
478 | \r | |
479 | return EFI_SUCCESS;\r | |
480 | \r | |
481 | ON_ERROR:\r | |
482 | NET_RESTORE_TPL (OldTpl);\r | |
483 | return Status;\r | |
484 | }\r | |
485 | \r | |
486 | \r | |
487 | /**\r | |
488 | Request an extra manual renew/rebind.\r | |
489 | \r | |
490 | @param This The DHCP protocol instance\r | |
491 | @param RebindRequest TRUE if request a rebind, otherwise renew it\r | |
492 | @param CompletionEvent Event to signal when complete\r | |
493 | \r | |
494 | @retval EFI_INVALID_PARAMETER The parameters are invalid\r | |
495 | @retval EFI_NOT_STARTED The DHCP protocol hasn't been started.\r | |
496 | @retval EFI_ACCESS_DENIED The DHCP protocol isn't in Bound state.\r | |
497 | @retval EFI_SUCCESS The DHCP is renewed/rebound.\r | |
498 | \r | |
499 | **/\r | |
500 | STATIC\r | |
501 | EFI_STATUS\r | |
502 | EFIAPI\r | |
503 | EfiDhcp4RenewRebind (\r | |
504 | IN EFI_DHCP4_PROTOCOL *This,\r | |
505 | IN BOOLEAN RebindRequest,\r | |
506 | IN EFI_EVENT CompletionEvent OPTIONAL\r | |
507 | )\r | |
508 | {\r | |
509 | DHCP_PROTOCOL *Instance;\r | |
510 | DHCP_SERVICE *DhcpSb;\r | |
511 | EFI_STATUS Status;\r | |
512 | EFI_TPL OldTpl;\r | |
513 | \r | |
514 | //\r | |
515 | // First validate the parameters\r | |
516 | //\r | |
517 | if (This == NULL) {\r | |
518 | return EFI_INVALID_PARAMETER;\r | |
519 | }\r | |
520 | \r | |
521 | Instance = DHCP_INSTANCE_FROM_THIS (This);\r | |
522 | \r | |
523 | if (Instance->Signature != DHCP_PROTOCOL_SIGNATURE) {\r | |
524 | return EFI_INVALID_PARAMETER;\r | |
525 | }\r | |
526 | \r | |
527 | OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);\r | |
528 | DhcpSb = Instance->Service;\r | |
529 | \r | |
530 | if (DhcpSb->DhcpState == Dhcp4Stopped) {\r | |
531 | Status = EFI_NOT_STARTED;\r | |
532 | goto ON_ERROR;\r | |
533 | }\r | |
534 | \r | |
535 | if (DhcpSb->DhcpState != Dhcp4Bound) {\r | |
536 | Status = EFI_ACCESS_DENIED;\r | |
537 | goto ON_ERROR;\r | |
538 | }\r | |
539 | \r | |
540 | if (DHCP_IS_BOOTP (DhcpSb->Para)) {\r | |
541 | return EFI_SUCCESS;\r | |
542 | }\r | |
543 | \r | |
544 | //\r | |
545 | // Transit the states then send a extra DHCP request\r | |
546 | //\r | |
547 | if (!RebindRequest) {\r | |
548 | DhcpSetState (DhcpSb, Dhcp4Renewing, FALSE);\r | |
549 | } else {\r | |
550 | DhcpSetState (DhcpSb, Dhcp4Rebinding, FALSE);\r | |
551 | }\r | |
552 | \r | |
553 | Status = DhcpSendMessage (\r | |
554 | DhcpSb,\r | |
555 | DhcpSb->Selected,\r | |
556 | DhcpSb->Para,\r | |
557 | DHCP_MSG_REQUEST,\r | |
67a58d0f | 558 | (UINT8 *) "Extra renew/rebind by the application"\r |
772db4bb | 559 | );\r |
560 | \r | |
561 | if (EFI_ERROR (Status)) {\r | |
562 | DhcpSetState (DhcpSb, Dhcp4Bound, FALSE);\r | |
563 | goto ON_ERROR;\r | |
564 | }\r | |
565 | \r | |
566 | DhcpSb->ExtraRefresh = TRUE;\r | |
567 | DhcpSb->IoStatus = EFI_ALREADY_STARTED;\r | |
568 | Instance->RenewRebindEvent = CompletionEvent;\r | |
569 | \r | |
570 | NET_RESTORE_TPL (OldTpl);\r | |
571 | \r | |
572 | if (CompletionEvent == NULL) {\r | |
573 | while (DhcpSb->IoStatus == EFI_ALREADY_STARTED) {\r | |
574 | DhcpSb->UdpIo->Udp->Poll (DhcpSb->UdpIo->Udp);\r | |
575 | }\r | |
576 | \r | |
577 | return DhcpSb->IoStatus;\r | |
578 | }\r | |
579 | \r | |
580 | return EFI_SUCCESS;\r | |
581 | \r | |
582 | ON_ERROR:\r | |
583 | NET_RESTORE_TPL (OldTpl);\r | |
584 | return Status;\r | |
585 | }\r | |
586 | \r | |
587 | \r | |
588 | /**\r | |
589 | Release the current acquired lease.\r | |
590 | \r | |
591 | @param This The DHCP protocol instance\r | |
592 | \r | |
593 | @retval EFI_INVALID_PARAMETER The parameter is invalid\r | |
594 | @retval EFI_DEVICE_ERROR Failed to transmit the DHCP release packet\r | |
595 | @retval EFI_ACCESS_DENIED The DHCP service isn't in one of the connected\r | |
596 | state.\r | |
597 | @retval EFI_SUCCESS The lease is released.\r | |
598 | \r | |
599 | **/\r | |
600 | STATIC\r | |
601 | EFI_STATUS\r | |
602 | EFIAPI\r | |
603 | EfiDhcp4Release (\r | |
604 | IN EFI_DHCP4_PROTOCOL *This\r | |
605 | )\r | |
606 | {\r | |
607 | DHCP_PROTOCOL *Instance;\r | |
608 | DHCP_SERVICE *DhcpSb;\r | |
609 | EFI_STATUS Status;\r | |
610 | EFI_TPL OldTpl;\r | |
611 | \r | |
612 | //\r | |
613 | // First validate the parameters\r | |
614 | //\r | |
615 | if (This == NULL) {\r | |
616 | return EFI_INVALID_PARAMETER;\r | |
617 | }\r | |
618 | \r | |
619 | Instance = DHCP_INSTANCE_FROM_THIS (This);\r | |
620 | \r | |
621 | if (Instance->Signature != DHCP_PROTOCOL_SIGNATURE) {\r | |
622 | return EFI_INVALID_PARAMETER;\r | |
623 | }\r | |
624 | \r | |
625 | Status = EFI_SUCCESS;\r | |
626 | OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);\r | |
627 | DhcpSb = Instance->Service;\r | |
628 | \r | |
629 | if ((DhcpSb->DhcpState != Dhcp4InitReboot) && (DhcpSb->DhcpState != Dhcp4Bound)) {\r | |
630 | Status = EFI_ACCESS_DENIED;\r | |
631 | goto ON_EXIT;\r | |
632 | }\r | |
633 | \r | |
634 | if (!DHCP_IS_BOOTP (DhcpSb->Para) && (DhcpSb->DhcpState == Dhcp4Bound)) {\r | |
635 | Status = DhcpSendMessage (\r | |
636 | DhcpSb,\r | |
637 | DhcpSb->Selected,\r | |
638 | DhcpSb->Para,\r | |
639 | DHCP_MSG_RELEASE,\r | |
640 | NULL\r | |
641 | );\r | |
642 | \r | |
643 | if (EFI_ERROR (Status)) {\r | |
644 | Status = EFI_DEVICE_ERROR;\r | |
645 | goto ON_EXIT;\r | |
646 | }\r | |
647 | }\r | |
648 | \r | |
649 | DhcpCleanLease (DhcpSb);\r | |
650 | \r | |
651 | ON_EXIT:\r | |
652 | NET_RESTORE_TPL (OldTpl);\r | |
653 | return Status;\r | |
654 | }\r | |
655 | \r | |
656 | \r | |
657 | /**\r | |
658 | Stop the current DHCP process. After this, other DHCP child\r | |
659 | can gain control of the service, configure and use it.\r | |
660 | \r | |
661 | @param This The DHCP protocol instance\r | |
662 | \r | |
663 | @retval EFI_INVALID_PARAMETER The parameter is invalid.\r | |
664 | @retval EFI_SUCCESS The DHCP process is stopped.\r | |
665 | \r | |
666 | **/\r | |
667 | STATIC\r | |
668 | EFI_STATUS\r | |
669 | EFIAPI\r | |
670 | EfiDhcp4Stop (\r | |
671 | IN EFI_DHCP4_PROTOCOL *This\r | |
672 | )\r | |
673 | {\r | |
674 | DHCP_PROTOCOL *Instance;\r | |
675 | DHCP_SERVICE *DhcpSb;\r | |
676 | EFI_TPL OldTpl;\r | |
677 | \r | |
678 | //\r | |
679 | // First validate the parameters\r | |
680 | //\r | |
681 | if (This == NULL) {\r | |
682 | return EFI_INVALID_PARAMETER;\r | |
683 | }\r | |
684 | \r | |
685 | Instance = DHCP_INSTANCE_FROM_THIS (This);\r | |
686 | \r | |
687 | if (Instance->Signature != DHCP_PROTOCOL_SIGNATURE) {\r | |
688 | return EFI_INVALID_PARAMETER;\r | |
689 | }\r | |
690 | \r | |
691 | OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);\r | |
692 | DhcpSb = Instance->Service;\r | |
693 | \r | |
694 | DhcpCleanLease (DhcpSb);\r | |
695 | \r | |
696 | DhcpSb->DhcpState = Dhcp4Stopped;\r | |
697 | DhcpSb->ServiceState = DHCP_UNCONFIGED;\r | |
698 | \r | |
699 | NET_RESTORE_TPL (OldTpl);\r | |
700 | return EFI_SUCCESS;\r | |
701 | }\r | |
702 | \r | |
703 | \r | |
704 | /**\r | |
705 | Build a new DHCP packet from the seed packet. Options may be deleted or\r | |
706 | appended. The caller should free the NewPacket when finished using it.\r | |
707 | \r | |
708 | @param This The DHCP protocol instance.\r | |
709 | @param SeedPacket The seed packet to start with\r | |
710 | @param DeleteCount The number of options to delete\r | |
711 | @param DeleteList The options to delete from the packet\r | |
712 | @param AppendCount The number of options to append\r | |
713 | @param AppendList The options to append to the packet\r | |
714 | @param NewPacket The new packet, allocated and built by this\r | |
715 | function.\r | |
716 | \r | |
717 | @retval EFI_INVALID_PARAMETER The parameters are invalid.\r | |
718 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory\r | |
719 | @retval EFI_SUCCESS The packet is build.\r | |
720 | \r | |
721 | **/\r | |
722 | STATIC\r | |
723 | EFI_STATUS\r | |
724 | EFIAPI\r | |
725 | EfiDhcp4Build (\r | |
726 | IN EFI_DHCP4_PROTOCOL *This,\r | |
727 | IN EFI_DHCP4_PACKET *SeedPacket,\r | |
728 | IN UINT32 DeleteCount,\r | |
729 | IN UINT8 *DeleteList OPTIONAL,\r | |
730 | IN UINT32 AppendCount,\r | |
731 | IN EFI_DHCP4_PACKET_OPTION *AppendList[] OPTIONAL,\r | |
732 | OUT EFI_DHCP4_PACKET **NewPacket\r | |
733 | )\r | |
734 | {\r | |
735 | //\r | |
736 | // First validate the parameters\r | |
737 | //\r | |
738 | if ((This == NULL) || (NewPacket == NULL)) {\r | |
739 | return EFI_INVALID_PARAMETER;\r | |
740 | }\r | |
741 | \r | |
742 | if ((SeedPacket == NULL) || (SeedPacket->Dhcp4.Magik != DHCP_OPTION_MAGIC) ||\r | |
743 | EFI_ERROR (DhcpValidateOptions (SeedPacket, NULL))) {\r | |
744 | \r | |
745 | return EFI_INVALID_PARAMETER;\r | |
746 | }\r | |
747 | \r | |
748 | if (((DeleteCount == 0) && (AppendCount == 0)) ||\r | |
749 | ((DeleteCount != 0) && (DeleteList == NULL)) ||\r | |
750 | ((AppendCount != 0) && (AppendList == NULL))) {\r | |
751 | \r | |
752 | return EFI_INVALID_PARAMETER;\r | |
753 | }\r | |
754 | \r | |
755 | return DhcpBuild (\r | |
756 | SeedPacket,\r | |
757 | DeleteCount,\r | |
758 | DeleteList,\r | |
759 | AppendCount,\r | |
760 | AppendList,\r | |
761 | NewPacket\r | |
762 | );\r | |
763 | }\r | |
764 | \r | |
c4a62a12 | 765 | STATIC\r |
766 | EFI_STATUS\r | |
767 | Dhcp4InstanceConfigUdpIo (\r | |
768 | IN UDP_IO_PORT *UdpIo,\r | |
769 | IN VOID *Context\r | |
770 | )\r | |
771 | {\r | |
772 | DHCP_PROTOCOL *Instance;\r | |
773 | DHCP_SERVICE *DhcpSb;\r | |
774 | EFI_DHCP4_TRANSMIT_RECEIVE_TOKEN *Token;\r | |
775 | EFI_UDP4_CONFIG_DATA UdpConfigData;\r | |
776 | IP4_ADDR Ip;\r | |
777 | \r | |
778 | Instance = (DHCP_PROTOCOL *) Context;\r | |
779 | DhcpSb = Instance->Service;\r | |
780 | Token = Instance->Token;\r | |
781 | \r | |
782 | NetZeroMem (&UdpConfigData, sizeof (EFI_UDP4_CONFIG_DATA));\r | |
783 | \r | |
784 | UdpConfigData.AcceptBroadcast = TRUE;\r | |
785 | UdpConfigData.AllowDuplicatePort = TRUE;\r | |
786 | UdpConfigData.TimeToLive = 64;\r | |
787 | UdpConfigData.DoNotFragment = TRUE;\r | |
788 | \r | |
789 | Ip = HTONL (DhcpSb->ClientAddr);\r | |
790 | NetCopyMem (&UdpConfigData.StationAddress, &Ip, sizeof (EFI_IPv4_ADDRESS));\r | |
791 | \r | |
792 | Ip = HTONL (DhcpSb->Netmask);\r | |
793 | NetCopyMem (&UdpConfigData.SubnetMask, &Ip, sizeof (EFI_IPv4_ADDRESS));\r | |
794 | \r | |
795 | if ((Token->ListenPointCount == 0) || (Token->ListenPoints[0].ListenPort == 0)) {\r | |
796 | UdpConfigData.StationPort = DHCP_CLIENT_PORT;\r | |
797 | } else {\r | |
798 | UdpConfigData.StationPort = Token->ListenPoints[0].ListenPort;\r | |
799 | }\r | |
800 | \r | |
801 | return UdpIo->Udp->Configure (UdpIo->Udp, &UdpConfigData);\r | |
802 | }\r | |
803 | \r | |
804 | STATIC\r | |
805 | EFI_STATUS\r | |
806 | Dhcp4InstanceCreateUdpIo (\r | |
807 | IN DHCP_PROTOCOL *Instance\r | |
808 | )\r | |
809 | {\r | |
810 | DHCP_SERVICE *DhcpSb;\r | |
811 | \r | |
812 | ASSERT (Instance->Token != NULL);\r | |
813 | \r | |
814 | DhcpSb = Instance->Service;\r | |
815 | Instance->UdpIo = UdpIoCreatePort (DhcpSb->Controller, DhcpSb->Image, Dhcp4InstanceConfigUdpIo, Instance);\r | |
816 | if (Instance->UdpIo == NULL) {\r | |
817 | return EFI_OUT_OF_RESOURCES;\r | |
818 | } else {\r | |
819 | return EFI_SUCCESS;\r | |
820 | }\r | |
821 | }\r | |
822 | \r | |
823 | STATIC\r | |
824 | VOID\r | |
825 | DhcpDummyExtFree (\r | |
826 | IN VOID *Arg\r | |
827 | )\r | |
828 | /*++\r | |
829 | \r | |
830 | Routine Description:\r | |
831 | \r | |
832 | Release the packet.\r | |
833 | \r | |
834 | Arguments:\r | |
835 | \r | |
836 | Arg - The packet to release\r | |
837 | \r | |
838 | Returns:\r | |
839 | \r | |
840 | None\r | |
841 | \r | |
842 | --*/\r | |
843 | { \r | |
844 | }\r | |
845 | \r | |
846 | VOID\r | |
847 | PxeDhcpInput (\r | |
848 | NET_BUF *UdpPacket,\r | |
849 | UDP_POINTS *Points,\r | |
850 | EFI_STATUS IoStatus,\r | |
851 | VOID *Context\r | |
852 | )\r | |
853 | {\r | |
854 | DHCP_PROTOCOL *Instance;\r | |
855 | DHCP_SERVICE *DhcpSb;\r | |
856 | EFI_DHCP4_HEADER *Head;\r | |
857 | NET_BUF *Wrap;\r | |
858 | EFI_DHCP4_PACKET *Packet;\r | |
859 | EFI_DHCP4_TRANSMIT_RECEIVE_TOKEN *Token;\r | |
860 | UINT32 Len;\r | |
861 | EFI_STATUS Status;\r | |
862 | \r | |
863 | Wrap = NULL;\r | |
864 | Instance = (DHCP_PROTOCOL *) Context;\r | |
865 | Token = Instance->Token;\r | |
866 | DhcpSb = Instance->Service;\r | |
867 | \r | |
868 | //\r | |
869 | // Don't restart receive if error occurs or DHCP is destoried.\r | |
870 | //\r | |
871 | if (EFI_ERROR (IoStatus)) {\r | |
872 | return ;\r | |
873 | }\r | |
874 | \r | |
875 | ASSERT (UdpPacket != NULL);\r | |
876 | \r | |
877 | //\r | |
878 | // Validate the packet received\r | |
879 | //\r | |
880 | if (UdpPacket->TotalSize < sizeof (EFI_DHCP4_HEADER)) {\r | |
881 | goto RESTART;\r | |
882 | }\r | |
883 | \r | |
884 | //\r | |
885 | // Copy the DHCP message to a continuous memory block, make the buffer size\r | |
886 | // of the EFI_DHCP4_PACKET a multiple of 4-byte.\r | |
887 | //\r | |
888 | Len = NET_ROUNDUP (sizeof (EFI_DHCP4_PACKET) + UdpPacket->TotalSize - sizeof (EFI_DHCP4_HEADER), 4);\r | |
889 | Wrap = NetbufAlloc (Len);\r | |
890 | \r | |
891 | if (Wrap == NULL) {\r | |
892 | goto RESTART;\r | |
893 | }\r | |
894 | \r | |
895 | Packet = (EFI_DHCP4_PACKET *) NetbufAllocSpace (Wrap, Len, NET_BUF_TAIL);\r | |
896 | Packet->Size = Len;\r | |
897 | Head = &Packet->Dhcp4.Header;\r | |
898 | Packet->Length = NetbufCopy (UdpPacket, 0, UdpPacket->TotalSize, (UINT8 *) Head);\r | |
899 | \r | |
900 | if (Packet->Length != UdpPacket->TotalSize) {\r | |
901 | goto RESTART;\r | |
902 | }\r | |
903 | \r | |
904 | //\r | |
905 | // Is this packet the answer to our packet?\r | |
906 | //\r | |
907 | if ((Head->OpCode != BOOTP_REPLY) ||\r | |
908 | (Head->Xid != Token->Packet->Dhcp4.Header.Xid) ||\r | |
909 | !NET_MAC_EQUAL (&DhcpSb->Mac, Head->ClientHwAddr, DhcpSb->HwLen)) {\r | |
910 | goto RESTART;\r | |
911 | }\r | |
912 | \r | |
913 | //\r | |
914 | // Validate the options and retrieve the interested options\r | |
915 | //\r | |
916 | if ((Packet->Length > sizeof (EFI_DHCP4_HEADER) + sizeof (UINT32)) &&\r | |
917 | (Packet->Dhcp4.Magik == DHCP_OPTION_MAGIC) &&\r | |
918 | EFI_ERROR (DhcpValidateOptions (Packet, NULL))) {\r | |
919 | \r | |
920 | goto RESTART;\r | |
921 | }\r | |
922 | \r | |
923 | //\r | |
924 | // Keep this packet in the ResponseQueue.\r | |
925 | //\r | |
926 | NET_GET_REF (Wrap);\r | |
927 | NetbufQueAppend (&Instance->ResponseQueue, Wrap);\r | |
928 | \r | |
929 | RESTART:\r | |
930 | \r | |
931 | NetbufFree (UdpPacket);\r | |
932 | \r | |
933 | if (Wrap != NULL) {\r | |
934 | NetbufFree (Wrap);\r | |
935 | }\r | |
936 | \r | |
937 | Status = UdpIoRecvDatagram (Instance->UdpIo, PxeDhcpInput, Instance, 0);\r | |
938 | if (EFI_ERROR (Status)) {\r | |
939 | PxeDhcpDone (Instance);\r | |
940 | }\r | |
941 | }\r | |
942 | \r | |
943 | VOID\r | |
944 | PxeDhcpDone (\r | |
945 | IN DHCP_PROTOCOL *Instance\r | |
946 | )\r | |
947 | {\r | |
948 | EFI_DHCP4_TRANSMIT_RECEIVE_TOKEN *Token;\r | |
949 | \r | |
950 | Token = Instance->Token;\r | |
951 | \r | |
952 | Token->ResponseCount = Instance->ResponseQueue.BufNum;\r | |
953 | if (Token->ResponseCount != 0) {\r | |
954 | Token->ResponseList = (EFI_DHCP4_PACKET *) NetAllocatePool (Instance->ResponseQueue.BufSize);\r | |
955 | if (Token->ResponseList == NULL) {\r | |
956 | Token->Status = EFI_OUT_OF_RESOURCES;\r | |
957 | goto SIGNAL_USER;\r | |
958 | }\r | |
959 | \r | |
960 | //\r | |
961 | // Copy the recieved DHCP responses.\r | |
962 | //\r | |
963 | NetbufQueCopy (&Instance->ResponseQueue, 0, Instance->ResponseQueue.BufSize, (UINT8 *) Token->ResponseList);\r | |
964 | Token->Status = EFI_SUCCESS;\r | |
965 | } else {\r | |
966 | Token->ResponseList = NULL;\r | |
967 | Token->Status = EFI_TIMEOUT;\r | |
968 | }\r | |
969 | \r | |
970 | SIGNAL_USER:\r | |
971 | //\r | |
972 | // Clean the resources dedicated for this transmit receive transaction.\r | |
973 | //\r | |
974 | NetbufQueFlush (&Instance->ResponseQueue);\r | |
975 | UdpIoCleanPort (Instance->UdpIo);\r | |
976 | UdpIoFreePort (Instance->UdpIo);\r | |
977 | Instance->UdpIo = NULL;\r | |
978 | Instance->Token = NULL;\r | |
979 | \r | |
980 | if (Token->CompletionEvent != NULL) {\r | |
981 | gBS->SignalEvent (Token->CompletionEvent);\r | |
982 | } \r | |
983 | }\r | |
984 | \r | |
772db4bb | 985 | \r |
986 | /**\r | |
987 | Transmit and receive a packet through this DHCP service.\r | |
988 | This is unsupported.\r | |
989 | \r | |
990 | @param This The DHCP protocol instance\r | |
991 | @param Token The transmit and receive instance\r | |
992 | \r | |
993 | @retval EFI_UNSUPPORTED It always returns unsupported.\r | |
994 | \r | |
995 | **/\r | |
996 | STATIC\r | |
997 | EFI_STATUS\r | |
998 | EFIAPI\r | |
999 | EfiDhcp4TransmitReceive (\r | |
1000 | IN EFI_DHCP4_PROTOCOL *This,\r | |
1001 | IN EFI_DHCP4_TRANSMIT_RECEIVE_TOKEN *Token\r | |
1002 | )\r | |
1003 | {\r | |
c4a62a12 | 1004 | DHCP_PROTOCOL *Instance;\r |
1005 | EFI_TPL OldTpl;\r | |
1006 | EFI_STATUS Status;\r | |
1007 | NET_FRAGMENT Frag;\r | |
1008 | NET_BUF *Wrap;\r | |
1009 | UDP_POINTS EndPoint;\r | |
1010 | IP4_ADDR Ip;\r | |
1011 | DHCP_SERVICE *DhcpSb;\r | |
1012 | IP4_ADDR Gateway;\r | |
1013 | IP4_ADDR SubnetMask;\r | |
1014 | \r | |
1015 | if ((This == NULL) || (Token == NULL) || (Token->Packet == NULL)) {\r | |
1016 | return EFI_INVALID_PARAMETER;\r | |
1017 | }\r | |
1018 | \r | |
1019 | Instance = DHCP_INSTANCE_FROM_THIS (This);\r | |
1020 | DhcpSb = Instance->Service;\r | |
1021 | \r | |
1022 | if (Instance->Token != NULL) {\r | |
1023 | //\r | |
1024 | // The previous call to TransmitReceive is not finished.\r | |
1025 | //\r | |
1026 | return EFI_NOT_READY;\r | |
1027 | }\r | |
1028 | \r | |
1029 | if ((Token->Packet->Dhcp4.Magik != DHCP_OPTION_MAGIC) ||\r | |
1030 | (NTOHL (Token->Packet->Dhcp4.Header.Xid) == Instance->Service->Xid) ||\r | |
1031 | (Token->TimeoutValue == 0) ||\r | |
1032 | ((Token->ListenPointCount != 0) && (Token->ListenPoints == NULL)) ||\r | |
1033 | EFI_ERROR (DhcpValidateOptions (Token->Packet, NULL)) ||\r | |
1034 | EFI_IP4_EQUAL (&Token->RemoteAddress, &mZeroIp4Addr)) {\r | |
1035 | //\r | |
1036 | // The DHCP packet isn't well-formed, the Transaction ID is already used\r | |
1037 | // , the timeout value is zero, the ListenPoint is invalid,\r | |
1038 | // or the RemoteAddress is zero.\r | |
1039 | //\r | |
1040 | return EFI_INVALID_PARAMETER;\r | |
1041 | }\r | |
1042 | \r | |
1043 | if (DhcpSb->ClientAddr == 0) {\r | |
1044 | \r | |
1045 | return EFI_NO_MAPPING;\r | |
1046 | }\r | |
1047 | \r | |
1048 | OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);\r | |
1049 | \r | |
1050 | //\r | |
1051 | // Save the token and the timeout value.\r | |
1052 | //\r | |
1053 | Instance->Token = Token;\r | |
1054 | Instance->Timeout = Token->TimeoutValue;\r | |
1055 | \r | |
1056 | //\r | |
1057 | // Create a UDP IO for this transmit receive transaction.\r | |
1058 | //\r | |
1059 | Status = Dhcp4InstanceCreateUdpIo (Instance);\r | |
1060 | if (EFI_ERROR (Status)) {\r | |
1061 | goto ON_ERROR;\r | |
1062 | }\r | |
1063 | \r | |
772db4bb | 1064 | //\r |
c4a62a12 | 1065 | // Wrap the DHCP packet into a net buffer.\r |
772db4bb | 1066 | //\r |
c4a62a12 | 1067 | Frag.Bulk = (UINT8 *) &Token->Packet->Dhcp4;\r |
1068 | Frag.Len = Token->Packet->Length;\r | |
1069 | Wrap = NetbufFromExt (&Frag, 1, 0, 0, DhcpDummyExtFree, NULL);\r | |
1070 | if (Wrap == NULL) {\r | |
1071 | Status = EFI_OUT_OF_RESOURCES;\r | |
1072 | goto ON_ERROR;\r | |
1073 | }\r | |
1074 | \r | |
1075 | //\r | |
1076 | // Set the local address and local port.\r | |
1077 | //\r | |
1078 | EndPoint.LocalAddr = 0;\r | |
1079 | EndPoint.LocalPort = 0;\r | |
1080 | \r | |
1081 | //\r | |
1082 | // Set the destination address and destination port.\r | |
1083 | //\r | |
1084 | NetCopyMem (&Ip, &Token->RemoteAddress, sizeof (EFI_IPv4_ADDRESS));\r | |
1085 | EndPoint.RemoteAddr = NTOHL (Ip);\r | |
1086 | \r | |
1087 | if (Token->RemotePort == 0) {\r | |
1088 | EndPoint.RemotePort = DHCP_SERVER_PORT;\r | |
1089 | } else {\r | |
1090 | EndPoint.RemotePort = Token->RemotePort;\r | |
1091 | }\r | |
1092 | \r | |
1093 | //\r | |
1094 | // Get the gateway.\r | |
1095 | //\r | |
1096 | SubnetMask = DhcpSb->Netmask;\r | |
1097 | Gateway = 0;\r | |
1098 | if (!IP4_NET_EQUAL (DhcpSb->ClientAddr, EndPoint.RemoteAddr, SubnetMask)) {\r | |
1099 | NetCopyMem (&Gateway, &Token->GatewayAddress, sizeof (EFI_IPv4_ADDRESS));\r | |
1100 | Gateway = NTOHL (Gateway);\r | |
1101 | }\r | |
1102 | \r | |
1103 | //\r | |
1104 | // Transmit the DHCP packet.\r | |
1105 | //\r | |
1106 | Status = UdpIoSendDatagram (Instance->UdpIo, Wrap, &EndPoint, Gateway, DhcpOnPacketSent, NULL);\r | |
1107 | if (EFI_ERROR (Status)) {\r | |
1108 | NetbufFree (Wrap);\r | |
1109 | goto ON_ERROR;\r | |
1110 | }\r | |
1111 | \r | |
1112 | //\r | |
1113 | // Start to receive the DHCP response.\r | |
1114 | //\r | |
1115 | Status = UdpIoRecvDatagram (Instance->UdpIo, PxeDhcpInput, Instance, 0);\r | |
1116 | if (EFI_ERROR (Status)) {\r | |
1117 | goto ON_ERROR;\r | |
1118 | }\r | |
1119 | \r | |
1120 | ON_ERROR:\r | |
1121 | \r | |
1122 | if (EFI_ERROR (Status) && (Instance->UdpIo != NULL)) {\r | |
1123 | UdpIoCleanPort (Instance->UdpIo);\r | |
1124 | UdpIoFreePort (Instance->UdpIo);\r | |
1125 | Instance->UdpIo = NULL;\r | |
1126 | Instance->Token = NULL;\r | |
1127 | }\r | |
1128 | \r | |
1129 | NET_RESTORE_TPL (OldTpl);\r | |
1130 | \r | |
1131 | if (!EFI_ERROR (Status) && (Token->CompletionEvent == NULL)) {\r | |
1132 | //\r | |
1133 | // Keep polling until timeout if no error happens and the CompletionEvent\r | |
1134 | // is NULL.\r | |
1135 | //\r | |
1136 | while (Instance->Timeout != 0) {\r | |
1137 | Instance->UdpIo->Udp->Poll (Instance->UdpIo->Udp);\r | |
1138 | }\r | |
1139 | }\r | |
1140 | \r | |
1141 | return Status;\r | |
772db4bb | 1142 | }\r |
1143 | \r | |
1144 | \r | |
1145 | /**\r | |
1146 | Callback function for DhcpIterateOptions. This callback sets the\r | |
1147 | EFI_DHCP4_PACKET_OPTION array in the DHCP_PARSE_CONTEXT to point\r | |
1148 | the individual DHCP option in the packet.\r | |
1149 | \r | |
1150 | @param Tag The DHCP option type\r | |
1151 | @param Len length of the DHCP option data\r | |
1152 | @param Data The DHCP option data\r | |
1153 | @param Context The context, to pass several parameters in.\r | |
1154 | \r | |
1155 | @retval EFI_SUCCESS It always returns EFI_SUCCESS\r | |
1156 | \r | |
1157 | **/\r | |
1158 | STATIC\r | |
1159 | EFI_STATUS\r | |
1160 | Dhcp4ParseCheckOption (\r | |
1161 | IN UINT8 Tag,\r | |
1162 | IN UINT8 Len,\r | |
1163 | IN UINT8 *Data,\r | |
1164 | IN VOID *Context\r | |
1165 | )\r | |
1166 | {\r | |
1167 | DHCP_PARSE_CONTEXT *Parse;\r | |
1168 | \r | |
1169 | Parse = (DHCP_PARSE_CONTEXT *) Context;\r | |
1170 | Parse->Index++;\r | |
1171 | \r | |
36ee91ca | 1172 | if (Parse->Index <= Parse->OptionCount) {\r |
772db4bb | 1173 | //\r |
1174 | // Use _CR to get the memory position of EFI_DHCP4_PACKET_OPTION for\r | |
1175 | // the EFI_DHCP4_PACKET_OPTION->Data because DhcpIterateOptions only\r | |
1176 | // pass in the point to option data.\r | |
1177 | //\r | |
1178 | Parse->Option[Parse->Index - 1] = _CR (Data, EFI_DHCP4_PACKET_OPTION, Data);\r | |
1179 | }\r | |
1180 | \r | |
1181 | return EFI_SUCCESS;\r | |
1182 | }\r | |
1183 | \r | |
1184 | \r | |
1185 | /**\r | |
1186 | Parse the DHCP options in the Packet into the PacketOptionList.\r | |
1187 | User should allocate this array of EFI_DHCP4_PACKET_OPTION points.\r | |
1188 | \r | |
1189 | @param This The DHCP protocol instance\r | |
1190 | @param Packet The DHCP packet to parse\r | |
1191 | @param OptionCount On input, the size of the PacketOptionList; On\r | |
1192 | output, the actual number of options processed.\r | |
1193 | @param PacketOptionList The array of EFI_DHCP4_PACKET_OPTION points\r | |
1194 | \r | |
1195 | @retval EFI_INVALID_PARAMETER The parameters are invalid.\r | |
1196 | @retval EFI_BUFFER_TOO_SMALL A bigger array of points is needed.\r | |
1197 | @retval EFI_SUCCESS The options are parsed.\r | |
1198 | \r | |
1199 | **/\r | |
1200 | STATIC\r | |
1201 | EFI_STATUS\r | |
1202 | EFIAPI\r | |
1203 | EfiDhcp4Parse (\r | |
1204 | IN EFI_DHCP4_PROTOCOL *This,\r | |
1205 | IN EFI_DHCP4_PACKET *Packet,\r | |
1206 | IN OUT UINT32 *OptionCount,\r | |
1207 | OUT EFI_DHCP4_PACKET_OPTION *PacketOptionList[] OPTIONAL\r | |
1208 | )\r | |
1209 | {\r | |
1210 | DHCP_PARSE_CONTEXT Context;\r | |
1211 | EFI_STATUS Status;\r | |
1212 | \r | |
1213 | //\r | |
1214 | // First validate the parameters\r | |
1215 | //\r | |
1216 | if ((This == NULL) || (Packet == NULL) || (OptionCount == NULL)) {\r | |
1217 | return EFI_INVALID_PARAMETER;\r | |
1218 | }\r | |
1219 | \r | |
1220 | if ((Packet->Size < Packet->Length + 2 * sizeof (UINT32)) ||\r | |
1221 | (Packet->Dhcp4.Magik != DHCP_OPTION_MAGIC) ||\r | |
1222 | EFI_ERROR (DhcpValidateOptions (Packet, NULL))) {\r | |
1223 | \r | |
1224 | return EFI_INVALID_PARAMETER;\r | |
1225 | }\r | |
1226 | \r | |
1227 | if ((*OptionCount != 0) && (PacketOptionList == NULL)) {\r | |
1228 | return EFI_BUFFER_TOO_SMALL;\r | |
1229 | }\r | |
1230 | \r | |
1231 | NetZeroMem (PacketOptionList, *OptionCount * sizeof (EFI_DHCP4_PACKET_OPTION *));\r | |
1232 | \r | |
1233 | Context.Option = PacketOptionList;\r | |
1234 | Context.OptionCount = *OptionCount;\r | |
1235 | Context.Index = 0;\r | |
1236 | \r | |
1237 | Status = DhcpIterateOptions (Packet, Dhcp4ParseCheckOption, &Context);\r | |
1238 | \r | |
1239 | if (EFI_ERROR (Status)) {\r | |
1240 | return Status;\r | |
1241 | }\r | |
1242 | \r | |
1243 | *OptionCount = Context.Index;\r | |
1244 | \r | |
1245 | if (Context.Index > Context.OptionCount) {\r | |
1246 | return EFI_BUFFER_TOO_SMALL;\r | |
1247 | }\r | |
1248 | \r | |
1249 | return EFI_SUCCESS;\r | |
1250 | }\r | |
1251 | \r | |
1252 | EFI_DHCP4_PROTOCOL mDhcp4ProtocolTemplate = {\r | |
1253 | EfiDhcp4GetModeData,\r | |
1254 | EfiDhcp4Configure,\r | |
1255 | EfiDhcp4Start,\r | |
1256 | EfiDhcp4RenewRebind,\r | |
1257 | EfiDhcp4Release,\r | |
1258 | EfiDhcp4Stop,\r | |
1259 | EfiDhcp4Build,\r | |
1260 | EfiDhcp4TransmitReceive,\r | |
1261 | EfiDhcp4Parse\r | |
1262 | };\r | |
c4a62a12 | 1263 | \r |