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1 | /** @file\r |
2 | Dhcp6 internal functions implementation.\r | |
3 | \r | |
b9f256bb | 4 | Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>\r |
a3bcde70 HT |
5 | \r |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
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 | |
14 | **/\r | |
15 | \r | |
16 | #include "Dhcp6Impl.h"\r | |
17 | \r | |
18 | \r | |
19 | /**\r | |
20 | Enqueue the packet into the retry list in case of timeout.\r | |
21 | \r | |
22 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
23 | @param[in] Packet The pointer to the Dhcp6 packet to retry.\r | |
24 | @param[in] Elapsed The pointer to the elapsed time value in the packet.\r | |
25 | @param[in] RetryCtl The pointer to the transmission control of the packet.\r | |
26 | This parameter is optional and may be NULL.\r | |
27 | \r | |
28 | @retval EFI_SUCCESS Successfully enqueued the packet into the retry list according\r | |
29 | to its message type.\r | |
30 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
31 | @retval EFI_DEVICE_ERROR An unexpected message type.\r | |
32 | \r | |
33 | **/\r | |
34 | EFI_STATUS\r | |
35 | Dhcp6EnqueueRetry (\r | |
36 | IN DHCP6_INSTANCE *Instance,\r | |
37 | IN EFI_DHCP6_PACKET *Packet,\r | |
38 | IN UINT16 *Elapsed,\r | |
39 | IN EFI_DHCP6_RETRANSMISSION *RetryCtl OPTIONAL\r | |
40 | )\r | |
41 | {\r | |
42 | DHCP6_TX_CB *TxCb;\r | |
43 | DHCP6_IA_CB *IaCb;\r | |
44 | \r | |
45 | ASSERT (Packet != NULL);\r | |
46 | \r | |
47 | IaCb = &Instance->IaCb;\r | |
48 | TxCb = AllocateZeroPool (sizeof (DHCP6_TX_CB));\r | |
49 | \r | |
50 | if (TxCb == NULL) {\r | |
51 | return EFI_OUT_OF_RESOURCES;\r | |
52 | }\r | |
53 | \r | |
54 | //\r | |
75dce340 | 55 | // Save tx packet pointer, and it will be destroyed when reply received.\r |
a3bcde70 HT |
56 | //\r |
57 | TxCb->TxPacket = Packet;\r | |
58 | TxCb->Xid = Packet->Dhcp6.Header.TransactionId;\r | |
59 | \r | |
60 | //\r | |
61 | // Save pointer to elapsed-time value so we can update it on retransmits.\r | |
62 | //\r | |
63 | TxCb->Elapsed = Elapsed;\r | |
64 | \r | |
65 | //\r | |
66 | // Calculate the retransmission according to the the message type.\r | |
67 | //\r | |
68 | switch (Packet->Dhcp6.Header.MessageType) {\r | |
69 | case Dhcp6MsgSolicit:\r | |
70 | //\r | |
71 | // Calculate the retransmission threshold value for solicit packet.\r | |
72 | // Use the default value by rfc-3315 if user doesn't configure.\r | |
73 | //\r | |
74 | if (RetryCtl == NULL) {\r | |
75 | TxCb->RetryCtl.Irt = DHCP6_SOL_IRT;\r | |
76 | TxCb->RetryCtl.Mrc = DHCP6_SOL_MRC;\r | |
77 | TxCb->RetryCtl.Mrt = DHCP6_SOL_MRT;\r | |
78 | TxCb->RetryCtl.Mrd = DHCP6_SOL_MRD;\r | |
79 | } else {\r | |
80 | TxCb->RetryCtl.Irt = (RetryCtl->Irt != 0) ? RetryCtl->Irt : DHCP6_SOL_IRT;\r | |
81 | TxCb->RetryCtl.Mrc = (RetryCtl->Mrc != 0) ? RetryCtl->Mrc : DHCP6_SOL_MRC;\r | |
82 | TxCb->RetryCtl.Mrt = (RetryCtl->Mrt != 0) ? RetryCtl->Mrt : DHCP6_SOL_MRT;\r | |
83 | TxCb->RetryCtl.Mrd = (RetryCtl->Mrd != 0) ? RetryCtl->Mrd : DHCP6_SOL_MRD;\r | |
84 | }\r | |
85 | \r | |
86 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
87 | TxCb->RetryCtl.Irt,\r | |
88 | TRUE,\r | |
89 | FALSE\r | |
90 | );\r | |
91 | break;\r | |
92 | \r | |
93 | case Dhcp6MsgRequest:\r | |
94 | //\r | |
95 | // Calculate the retransmission threshold value for request packet.\r | |
96 | //\r | |
97 | TxCb->RetryCtl.Irt = DHCP6_REQ_IRT;\r | |
98 | TxCb->RetryCtl.Mrc = DHCP6_REQ_MRC;\r | |
99 | TxCb->RetryCtl.Mrt = DHCP6_REQ_MRT;\r | |
100 | TxCb->RetryCtl.Mrd = DHCP6_REQ_MRD;\r | |
101 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
102 | TxCb->RetryCtl.Irt,\r | |
103 | TRUE,\r | |
104 | TRUE\r | |
105 | );\r | |
106 | break;\r | |
107 | \r | |
108 | case Dhcp6MsgConfirm:\r | |
109 | //\r | |
110 | // Calculate the retransmission threshold value for confirm packet.\r | |
111 | //\r | |
112 | TxCb->RetryCtl.Irt = DHCP6_CNF_IRT;\r | |
113 | TxCb->RetryCtl.Mrc = DHCP6_CNF_MRC;\r | |
114 | TxCb->RetryCtl.Mrt = DHCP6_CNF_MRT;\r | |
115 | TxCb->RetryCtl.Mrd = DHCP6_CNF_MRD;\r | |
116 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
117 | TxCb->RetryCtl.Irt,\r | |
118 | TRUE,\r | |
119 | TRUE\r | |
120 | );\r | |
121 | break;\r | |
122 | \r | |
123 | case Dhcp6MsgRenew:\r | |
124 | //\r | |
125 | // Calculate the retransmission threshold value for renew packet.\r | |
126 | //\r | |
127 | TxCb->RetryCtl.Irt = DHCP6_REB_IRT;\r | |
128 | TxCb->RetryCtl.Mrc = DHCP6_REB_MRC;\r | |
129 | TxCb->RetryCtl.Mrt = DHCP6_REB_MRT;\r | |
130 | TxCb->RetryCtl.Mrd = IaCb->T2 - IaCb->T1;\r | |
131 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
132 | TxCb->RetryCtl.Irt,\r | |
133 | TRUE,\r | |
134 | TRUE\r | |
135 | );\r | |
136 | break;\r | |
137 | \r | |
138 | case Dhcp6MsgRebind:\r | |
139 | //\r | |
140 | // Calculate the retransmission threshold value for rebind packet.\r | |
141 | //\r | |
142 | TxCb->RetryCtl.Irt = DHCP6_REN_IRT;\r | |
143 | TxCb->RetryCtl.Mrc = DHCP6_REN_MRC;\r | |
144 | TxCb->RetryCtl.Mrt = DHCP6_REN_MRT;\r | |
145 | TxCb->RetryCtl.Mrd = IaCb->AllExpireTime - IaCb->T2;\r | |
146 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
147 | TxCb->RetryCtl.Irt,\r | |
148 | TRUE,\r | |
149 | TRUE\r | |
150 | );\r | |
151 | break;\r | |
152 | \r | |
153 | case Dhcp6MsgDecline:\r | |
154 | //\r | |
155 | // Calculate the retransmission threshold value for decline packet.\r | |
156 | //\r | |
157 | TxCb->RetryCtl.Irt = DHCP6_DEC_IRT;\r | |
158 | TxCb->RetryCtl.Mrc = DHCP6_DEC_MRC;\r | |
159 | TxCb->RetryCtl.Mrt = DHCP6_DEC_MRT;\r | |
160 | TxCb->RetryCtl.Mrd = DHCP6_DEC_MRD;\r | |
161 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
162 | TxCb->RetryCtl.Irt,\r | |
163 | TRUE,\r | |
164 | TRUE\r | |
165 | );\r | |
166 | break;\r | |
167 | \r | |
168 | case Dhcp6MsgRelease:\r | |
169 | //\r | |
170 | // Calculate the retransmission threshold value for release packet.\r | |
171 | //\r | |
172 | TxCb->RetryCtl.Irt = DHCP6_REL_IRT;\r | |
173 | TxCb->RetryCtl.Mrc = DHCP6_REL_MRC;\r | |
174 | TxCb->RetryCtl.Mrt = DHCP6_REL_MRT;\r | |
175 | TxCb->RetryCtl.Mrd = DHCP6_REL_MRD;\r | |
176 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
177 | TxCb->RetryCtl.Irt,\r | |
178 | TRUE,\r | |
179 | TRUE\r | |
180 | );\r | |
181 | break;\r | |
182 | \r | |
183 | case Dhcp6MsgInfoRequest:\r | |
184 | //\r | |
185 | // Calculate the retransmission threshold value for info-request packet.\r | |
186 | // Use the default value by rfc-3315 if user doesn't configure.\r | |
187 | //\r | |
188 | if (RetryCtl == NULL) {\r | |
189 | TxCb->RetryCtl.Irt = DHCP6_INF_IRT;\r | |
190 | TxCb->RetryCtl.Mrc = DHCP6_INF_MRC;\r | |
191 | TxCb->RetryCtl.Mrt = DHCP6_INF_MRT;\r | |
192 | TxCb->RetryCtl.Mrd = DHCP6_INF_MRD;\r | |
193 | } else {\r | |
194 | TxCb->RetryCtl.Irt = (RetryCtl->Irt != 0) ? RetryCtl->Irt : DHCP6_INF_IRT;\r | |
195 | TxCb->RetryCtl.Mrc = (RetryCtl->Mrc != 0) ? RetryCtl->Mrc : DHCP6_INF_MRC;\r | |
196 | TxCb->RetryCtl.Mrt = (RetryCtl->Mrt != 0) ? RetryCtl->Mrt : DHCP6_INF_MRT;\r | |
197 | TxCb->RetryCtl.Mrd = (RetryCtl->Mrd != 0) ? RetryCtl->Mrd : DHCP6_INF_MRD;\r | |
198 | }\r | |
199 | \r | |
200 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
201 | TxCb->RetryCtl.Irt,\r | |
202 | TRUE,\r | |
203 | TRUE\r | |
204 | );\r | |
205 | break;\r | |
206 | \r | |
207 | default:\r | |
208 | //\r | |
209 | // Unexpected message type.\r | |
210 | //\r | |
211 | return EFI_DEVICE_ERROR;\r | |
212 | }\r | |
213 | \r | |
214 | //\r | |
215 | // Insert into the retransmit list of the instance.\r | |
216 | //\r | |
217 | InsertTailList (&Instance->TxList, &TxCb->Link);\r | |
218 | \r | |
219 | return EFI_SUCCESS;\r | |
220 | }\r | |
221 | \r | |
222 | \r | |
223 | /**\r | |
224 | Dequeue the packet from retry list if reply received or timeout at last.\r | |
225 | \r | |
226 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
227 | @param[in] PacketXid The packet transaction id to match.\r | |
228 | @param[in] NeedSignal If TRUE, then an timeout event need be signaled when it is existed.\r | |
229 | Otherwise, this parameter is ignored.\r | |
230 | \r | |
231 | @retval EFI_SUCCESS Successfully dequeued the packet into retry list .\r | |
232 | @retval EFI_NOT_FOUND There is no xid matched in retry list.\r | |
233 | \r | |
234 | **/\r | |
235 | EFI_STATUS\r | |
236 | Dhcp6DequeueRetry (\r | |
237 | IN DHCP6_INSTANCE *Instance,\r | |
238 | IN UINT32 PacketXid,\r | |
239 | IN BOOLEAN NeedSignal\r | |
240 | )\r | |
241 | {\r | |
242 | LIST_ENTRY *Entry;\r | |
243 | LIST_ENTRY *NextEntry;\r | |
244 | DHCP6_TX_CB *TxCb;\r | |
245 | DHCP6_INF_CB *InfCb;\r | |
246 | \r | |
247 | //\r | |
248 | // Seek the retransmit node in the retransmit list by packet xid.\r | |
249 | //\r | |
250 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, &Instance->TxList) {\r | |
251 | \r | |
252 | TxCb = NET_LIST_USER_STRUCT (Entry, DHCP6_TX_CB, Link);\r | |
253 | ASSERT(TxCb->TxPacket);\r | |
254 | \r | |
255 | if (TxCb->Xid == PacketXid) {\r | |
256 | \r | |
257 | if (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgInfoRequest) {\r | |
258 | \r | |
259 | //\r | |
260 | // Seek the info-request node in the info-request list by packet xid.\r | |
261 | //\r | |
262 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, &Instance->InfList) {\r | |
263 | \r | |
264 | InfCb = NET_LIST_USER_STRUCT (Entry, DHCP6_INF_CB, Link);\r | |
265 | \r | |
266 | if (InfCb->Xid == PacketXid) {\r | |
267 | //\r | |
268 | // Remove the info-request node, and signal the event if timeout.\r | |
269 | //\r | |
270 | if (InfCb->TimeoutEvent != NULL && NeedSignal) {\r | |
271 | gBS->SignalEvent (InfCb->TimeoutEvent);\r | |
272 | }\r | |
273 | \r | |
274 | RemoveEntryList (&InfCb->Link);\r | |
275 | FreePool (InfCb);\r | |
276 | }\r | |
277 | }\r | |
278 | }\r | |
279 | //\r | |
280 | // Remove the retransmit node.\r | |
281 | //\r | |
282 | RemoveEntryList (&TxCb->Link);\r | |
283 | ASSERT(TxCb->TxPacket);\r | |
284 | FreePool (TxCb->TxPacket);\r | |
285 | FreePool (TxCb);\r | |
286 | return EFI_SUCCESS;\r | |
287 | }\r | |
288 | }\r | |
289 | \r | |
290 | return EFI_NOT_FOUND;\r | |
291 | }\r | |
292 | \r | |
293 | \r | |
294 | /**\r | |
295 | Clean up the specific nodes in the retry list.\r | |
296 | \r | |
297 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
298 | @param[in] Scope The scope of cleanup nodes.\r | |
299 | \r | |
300 | **/\r | |
301 | VOID\r | |
302 | Dhcp6CleanupRetry (\r | |
303 | IN DHCP6_INSTANCE *Instance,\r | |
304 | IN UINT32 Scope\r | |
305 | )\r | |
306 | {\r | |
307 | LIST_ENTRY *Entry;\r | |
308 | LIST_ENTRY *NextEntry;\r | |
309 | DHCP6_TX_CB *TxCb;\r | |
310 | DHCP6_INF_CB *InfCb;\r | |
311 | \r | |
312 | //\r | |
313 | // Clean up all the stateful messages from the retransmit list.\r | |
314 | //\r | |
315 | if (Scope == DHCP6_PACKET_STATEFUL || Scope == DHCP6_PACKET_ALL) {\r | |
316 | \r | |
317 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, &Instance->TxList) {\r | |
318 | \r | |
319 | TxCb = NET_LIST_USER_STRUCT (Entry, DHCP6_TX_CB, Link);\r | |
320 | ASSERT(TxCb->TxPacket);\r | |
321 | \r | |
322 | if (TxCb->TxPacket->Dhcp6.Header.MessageType != Dhcp6MsgInfoRequest) {\r | |
323 | RemoveEntryList (&TxCb->Link);\r | |
324 | FreePool (TxCb->TxPacket);\r | |
325 | FreePool (TxCb);\r | |
326 | }\r | |
327 | }\r | |
328 | }\r | |
329 | \r | |
330 | //\r | |
331 | // Clean up all the stateless messages from the retransmit list.\r | |
332 | //\r | |
333 | if (Scope == DHCP6_PACKET_STATELESS || Scope == DHCP6_PACKET_ALL) {\r | |
334 | \r | |
335 | //\r | |
336 | // Clean up all the retransmit list for stateless messages.\r | |
337 | //\r | |
338 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, &Instance->TxList) {\r | |
339 | \r | |
340 | TxCb = NET_LIST_USER_STRUCT (Entry, DHCP6_TX_CB, Link);\r | |
341 | ASSERT(TxCb->TxPacket);\r | |
342 | \r | |
343 | if (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgInfoRequest) {\r | |
344 | RemoveEntryList (&TxCb->Link);\r | |
345 | FreePool (TxCb->TxPacket);\r | |
346 | FreePool (TxCb);\r | |
347 | }\r | |
348 | }\r | |
349 | \r | |
350 | //\r | |
351 | // Clean up all the info-request messages list.\r | |
352 | //\r | |
353 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, &Instance->InfList) {\r | |
354 | \r | |
355 | InfCb = NET_LIST_USER_STRUCT (Entry, DHCP6_INF_CB, Link);\r | |
356 | \r | |
357 | if (InfCb->TimeoutEvent != NULL) {\r | |
358 | gBS->SignalEvent (InfCb->TimeoutEvent);\r | |
359 | }\r | |
360 | RemoveEntryList (&InfCb->Link);\r | |
361 | FreePool (InfCb);\r | |
362 | }\r | |
363 | }\r | |
364 | }\r | |
365 | \r | |
366 | \r | |
367 | /**\r | |
368 | Clean up the session of the instance stateful exchange.\r | |
369 | \r | |
370 | @param[in, out] Instance The pointer to the Dhcp6 instance.\r | |
371 | @param[in] Status The return status from udp.\r | |
372 | \r | |
373 | **/\r | |
374 | VOID\r | |
375 | Dhcp6CleanupSession (\r | |
376 | IN OUT DHCP6_INSTANCE *Instance,\r | |
377 | IN EFI_STATUS Status\r | |
378 | )\r | |
379 | {\r | |
380 | UINTN Index;\r | |
381 | EFI_DHCP6_IA *Ia;\r | |
382 | \r | |
383 | ASSERT(Instance->Config);\r | |
384 | ASSERT(Instance->IaCb.Ia);\r | |
385 | \r | |
386 | //\r | |
387 | // Clean up the retransmit list for stateful messages.\r | |
388 | //\r | |
389 | Dhcp6CleanupRetry (Instance, DHCP6_PACKET_STATEFUL);\r | |
390 | \r | |
391 | if (Instance->Unicast != NULL) {\r | |
392 | FreePool (Instance->Unicast);\r | |
393 | }\r | |
394 | \r | |
395 | if (Instance->AdSelect != NULL) {\r | |
396 | FreePool (Instance->AdSelect);\r | |
397 | }\r | |
398 | \r | |
399 | if (Instance->IaCb.Ia->ReplyPacket != NULL) {\r | |
400 | FreePool (Instance->IaCb.Ia->ReplyPacket);\r | |
401 | }\r | |
402 | \r | |
403 | //\r | |
404 | // Reinitialize the Ia fields of the instance.\r | |
405 | //\r | |
406 | Instance->UdpSts = Status;\r | |
407 | Instance->AdSelect = NULL;\r | |
408 | Instance->AdPref = 0;\r | |
409 | Instance->Unicast = NULL;\r | |
410 | Instance->IaCb.T1 = 0;\r | |
411 | Instance->IaCb.T2 = 0;\r | |
412 | Instance->IaCb.AllExpireTime = 0;\r | |
413 | Instance->IaCb.LeaseTime = 0;\r | |
414 | \r | |
415 | //\r | |
416 | // Clear start time\r | |
417 | //\r | |
418 | Instance->StartTime = 0;\r | |
419 | \r | |
420 | Ia = Instance->IaCb.Ia;\r | |
421 | Ia->State = Dhcp6Init;\r | |
422 | Ia->ReplyPacket = NULL;\r | |
423 | \r | |
424 | //\r | |
425 | // Set the addresses as zero lifetime, and then the notify\r | |
426 | // function in Ip6Config will remove these timeout address.\r | |
427 | //\r | |
428 | for (Index = 0; Index < Ia->IaAddressCount; Index++) {\r | |
429 | Ia->IaAddress[Index].PreferredLifetime = 0;\r | |
430 | Ia->IaAddress[Index].ValidLifetime = 0;\r | |
431 | }\r | |
432 | \r | |
433 | //\r | |
434 | //\r | |
435 | // Signal the Ia information updated event to informal user.\r | |
436 | //\r | |
437 | if (Instance->Config->IaInfoEvent != NULL) {\r | |
438 | gBS->SignalEvent (Instance->Config->IaInfoEvent);\r | |
439 | }\r | |
440 | }\r | |
441 | \r | |
442 | \r | |
443 | /**\r | |
444 | Callback to user when Dhcp6 transmit/receive occurs.\r | |
445 | \r | |
446 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
447 | @param[in] Event The current Dhcp6 event.\r | |
448 | @param[in, out] Packet The pointer to the packet sending or received.\r | |
449 | \r | |
450 | @retval EFI_SUCCESS The user function returns success.\r | |
451 | @retval EFI_NOT_READY Direct the caller to continue collecting the offer.\r | |
452 | @retval EFI_ABORTED The user function ask it to abort.\r | |
453 | \r | |
454 | **/\r | |
455 | EFI_STATUS\r | |
456 | EFIAPI\r | |
457 | Dhcp6CallbackUser (\r | |
458 | IN DHCP6_INSTANCE *Instance,\r | |
459 | IN EFI_DHCP6_EVENT Event,\r | |
460 | IN OUT EFI_DHCP6_PACKET **Packet\r | |
461 | )\r | |
462 | {\r | |
463 | EFI_STATUS Status;\r | |
464 | EFI_DHCP6_PACKET *NewPacket;\r | |
465 | EFI_DHCP6_CALLBACK Callback;\r | |
466 | VOID *Context;\r | |
467 | \r | |
468 | ASSERT (Packet != NULL);\r | |
469 | ASSERT (Instance->Config != NULL);\r | |
470 | ASSERT (Instance->IaCb.Ia != NULL);\r | |
471 | \r | |
472 | NewPacket = NULL;\r | |
473 | Status = EFI_SUCCESS;\r | |
474 | Callback = Instance->Config->Dhcp6Callback;\r | |
475 | Context = Instance->Config->CallbackContext;\r | |
476 | \r | |
477 | //\r | |
478 | // Callback to user with the new message if has.\r | |
479 | //\r | |
480 | if (Callback != NULL) {\r | |
481 | \r | |
482 | Status = Callback (\r | |
483 | &Instance->Dhcp6,\r | |
484 | Context,\r | |
485 | Instance->IaCb.Ia->State,\r | |
486 | Event,\r | |
487 | *Packet,\r | |
488 | &NewPacket\r | |
489 | );\r | |
490 | //\r | |
491 | // Updated the new packet from user to replace the original one.\r | |
492 | //\r | |
493 | if (NewPacket != NULL) {\r | |
494 | ASSERT (*Packet != NULL);\r | |
495 | FreePool (*Packet);\r | |
496 | *Packet = NewPacket;\r | |
497 | }\r | |
498 | }\r | |
499 | \r | |
500 | return Status;\r | |
501 | }\r | |
502 | \r | |
503 | \r | |
504 | /**\r | |
505 | Update Ia according to the new reply message.\r | |
506 | \r | |
507 | @param[in, out] Instance The pointer to the Dhcp6 instance.\r | |
508 | @param[in] Packet The pointer to reply messages.\r | |
509 | \r | |
510 | @retval EFI_SUCCESS Updated the Ia information successfully.\r | |
511 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
512 | \r | |
513 | **/\r | |
514 | EFI_STATUS\r | |
515 | Dhcp6UpdateIaInfo (\r | |
516 | IN OUT DHCP6_INSTANCE *Instance,\r | |
517 | IN EFI_DHCP6_PACKET *Packet\r | |
518 | )\r | |
519 | {\r | |
520 | EFI_STATUS Status;\r | |
521 | EFI_DHCP6_STATE State;\r | |
522 | UINT8 *Option;\r | |
523 | UINT8 *IaInnerOpt;\r | |
524 | UINT16 IaInnerLen;\r | |
525 | UINT16 StsCode;\r | |
526 | UINT32 T1;\r | |
527 | UINT32 T2;\r | |
528 | \r | |
529 | ASSERT (Instance->Config != NULL);\r | |
530 | //\r | |
531 | // If the reply was received in reponse to a solicit with rapid commit option,\r | |
532 | // request, renew or rebind message, the client updates the information it has\r | |
533 | // recorded about IAs from the IA options contained in the reply message:\r | |
534 | // 1. record the T1 and T2 times\r | |
535 | // 2. add any new addresses in the IA\r | |
536 | // 3. discard any addresses from the IA, that have a valid lifetime of 0\r | |
537 | // 4. update lifetimes for any addresses that alread recorded\r | |
538 | // 5. leave unchanged any information about addresses\r | |
539 | //\r | |
540 | // See details in the section-18.1.8 of rfc-3315.\r | |
541 | //\r | |
542 | State = Dhcp6Init;\r | |
543 | Option = Dhcp6SeekIaOption (\r | |
544 | Packet->Dhcp6.Option,\r | |
545 | Packet->Length - sizeof (EFI_DHCP6_HEADER),\r | |
546 | &Instance->Config->IaDescriptor\r | |
547 | );\r | |
548 | if (Option == NULL) {\r | |
549 | return EFI_DEVICE_ERROR;\r | |
550 | }\r | |
551 | \r | |
552 | //\r | |
553 | // The format of the IA_NA option is:\r | |
554 | //\r | |
555 | // 0 1 2 3\r | |
556 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1\r | |
557 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
558 | // | OPTION_IA_NA | option-len |\r | |
559 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
560 | // | IAID (4 octets) |\r | |
561 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
562 | // | T1 |\r | |
563 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
564 | // | T2 |\r | |
565 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
566 | // | |\r | |
567 | // . IA_NA-options .\r | |
568 | // . .\r | |
569 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
570 | //\r | |
571 | // The format of the IA_TA option is:\r | |
572 | //\r | |
573 | // 0 1 2 3\r | |
574 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1\r | |
575 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
576 | // | OPTION_IA_TA | option-len |\r | |
577 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
578 | // | IAID (4 octets) |\r | |
579 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
580 | // | |\r | |
581 | // . IA_TA-options .\r | |
582 | // . .\r | |
583 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
584 | //\r | |
585 | \r | |
586 | //\r | |
587 | // sizeof (option-code + option-len + IaId) = 8\r | |
588 | // sizeof (option-code + option-len + IaId + T1) = 12\r | |
589 | // sizeof (option-code + option-len + IaId + T1 + T2) = 16\r | |
590 | //\r | |
591 | // The inner options still start with 2 bytes option-code and 2 bytes option-len.\r | |
592 | //\r | |
593 | if (Instance->Config->IaDescriptor.Type == Dhcp6OptIana) {\r | |
594 | T1 = NTOHL (ReadUnaligned32 ((UINT32 *) (Option + 8)));\r | |
595 | T2 = NTOHL (ReadUnaligned32 ((UINT32 *) (Option + 12)));\r | |
685e44a5 | 596 | //\r |
597 | // Refer to RFC3155 Chapter 22.4. If a client receives an IA_NA with T1 greater than T2,\r | |
598 | // and both T1 and T2 are greater than 0, the client discards the IA_NA option and processes\r | |
599 | // the remainder of the message as though the server had not included the invalid IA_NA option.\r | |
600 | //\r | |
601 | if (T1 > T2 && T2 > 0) {\r | |
602 | return EFI_DEVICE_ERROR;\r | |
603 | }\r | |
a3bcde70 HT |
604 | IaInnerOpt = Option + 16;\r |
605 | IaInnerLen = (UINT16) (NTOHS (ReadUnaligned16 ((UINT16 *) (Option + 2))) - 12);\r | |
606 | } else {\r | |
607 | T1 = 0;\r | |
608 | T2 = 0;\r | |
609 | IaInnerOpt = Option + 8;\r | |
610 | IaInnerLen = (UINT16) (NTOHS (ReadUnaligned16 ((UINT16 *) (Option + 2))) - 4);\r | |
611 | }\r | |
612 | \r | |
613 | //\r | |
614 | // The format of the Status Code option is:\r | |
615 | //\r | |
616 | // 0 1 2 3\r | |
617 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1\r | |
618 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
619 | // | OPTION_STATUS_CODE | option-len |\r | |
620 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
621 | // | status-code | |\r | |
622 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |\r | |
623 | // . .\r | |
624 | // . status-message .\r | |
625 | // . .\r | |
626 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
627 | //\r | |
628 | \r | |
629 | //\r | |
630 | // sizeof (option-code + option-len) = 4\r | |
631 | //\r | |
632 | StsCode = Dhcp6StsSuccess;\r | |
633 | Option = Dhcp6SeekOption (IaInnerOpt, IaInnerLen, Dhcp6OptStatusCode);\r | |
634 | \r | |
635 | if (Option != NULL) {\r | |
636 | StsCode = NTOHS (ReadUnaligned16 ((UINT16 *) (Option + 4)));\r | |
637 | if (StsCode != Dhcp6StsSuccess) {\r | |
638 | return EFI_DEVICE_ERROR;\r | |
639 | }\r | |
640 | }\r | |
641 | \r | |
642 | //\r | |
643 | // Generate control block for the Ia.\r | |
644 | //\r | |
645 | Status = Dhcp6GenerateIaCb (\r | |
646 | Instance,\r | |
647 | IaInnerOpt,\r | |
648 | IaInnerLen,\r | |
649 | T1,\r | |
650 | T2\r | |
651 | );\r | |
652 | \r | |
653 | return Status;\r | |
654 | }\r | |
655 | \r | |
656 | \r | |
657 | \r | |
658 | /**\r | |
659 | Seek StatusCode Option in package. A Status Code option may appear in the\r | |
660 | options field of a DHCP message and/or in the options field of another option.\r | |
661 | See details in section 22.13, RFC3315.\r | |
662 | \r | |
663 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
664 | @param[in] Packet The pointer to reply messages.\r | |
665 | @param[out] Option The pointer to status code option.\r | |
666 | \r | |
667 | @retval EFI_SUCCESS Seek status code option successfully.\r | |
668 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
669 | \r | |
670 | **/\r | |
671 | EFI_STATUS\r | |
672 | Dhcp6SeekStsOption (\r | |
673 | IN DHCP6_INSTANCE *Instance,\r | |
674 | IN EFI_DHCP6_PACKET *Packet,\r | |
675 | OUT UINT8 **Option\r | |
676 | )\r | |
677 | {\r | |
678 | UINT8 *IaInnerOpt;\r | |
679 | UINT16 IaInnerLen;\r | |
680 | UINT16 StsCode;\r | |
681 | \r | |
682 | //\r | |
683 | // Seek StatusCode option directly in DHCP message body. That is, search in\r | |
684 | // non-encapsulated option fields.\r | |
685 | //\r | |
686 | *Option = Dhcp6SeekOption (\r | |
687 | Packet->Dhcp6.Option,\r | |
688 | Packet->Length - 4,\r | |
689 | Dhcp6OptStatusCode\r | |
690 | );\r | |
691 | \r | |
692 | if (*Option != NULL) {\r | |
693 | StsCode = NTOHS (ReadUnaligned16 ((UINT16 *) (*Option + 4)));\r | |
694 | if (StsCode != Dhcp6StsSuccess) {\r | |
695 | return EFI_DEVICE_ERROR;\r | |
696 | }\r | |
697 | }\r | |
698 | \r | |
699 | //\r | |
700 | // Seek in encapsulated options, IA_NA and IA_TA.\r | |
701 | //\r | |
702 | *Option = Dhcp6SeekIaOption (\r | |
703 | Packet->Dhcp6.Option,\r | |
704 | Packet->Length - sizeof (EFI_DHCP6_HEADER),\r | |
705 | &Instance->Config->IaDescriptor\r | |
706 | );\r | |
707 | if (*Option == NULL) {\r | |
685e44a5 | 708 | return EFI_SUCCESS;\r |
a3bcde70 HT |
709 | }\r |
710 | \r | |
711 | //\r | |
712 | // The format of the IA_NA option is:\r | |
713 | //\r | |
714 | // 0 1 2 3\r | |
715 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1\r | |
716 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
717 | // | OPTION_IA_NA | option-len |\r | |
718 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
719 | // | IAID (4 octets) |\r | |
720 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
721 | // | T1 |\r | |
722 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
723 | // | T2 |\r | |
724 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
725 | // | |\r | |
726 | // . IA_NA-options .\r | |
727 | // . .\r | |
728 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
729 | //\r | |
730 | // The format of the IA_TA option is:\r | |
731 | //\r | |
732 | // 0 1 2 3\r | |
733 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1\r | |
734 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
735 | // | OPTION_IA_TA | option-len |\r | |
736 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
737 | // | IAID (4 octets) |\r | |
738 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
739 | // | |\r | |
740 | // . IA_TA-options .\r | |
741 | // . .\r | |
742 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
743 | //\r | |
744 | \r | |
745 | //\r | |
746 | // sizeof (option-code + option-len + IaId) = 8\r | |
747 | // sizeof (option-code + option-len + IaId + T1) = 12\r | |
748 | // sizeof (option-code + option-len + IaId + T1 + T2) = 16\r | |
749 | //\r | |
750 | // The inner options still start with 2 bytes option-code and 2 bytes option-len.\r | |
751 | //\r | |
752 | if (Instance->Config->IaDescriptor.Type == Dhcp6OptIana) {\r | |
753 | IaInnerOpt = *Option + 16;\r | |
754 | IaInnerLen = (UINT16) (NTOHS (ReadUnaligned16 ((UINT16 *) (*Option + 2))) - 12);\r | |
755 | } else {\r | |
756 | IaInnerOpt = *Option + 8;\r | |
757 | IaInnerLen = (UINT16) (NTOHS (ReadUnaligned16 ((UINT16 *) (*Option + 2))) - 4);\r | |
758 | }\r | |
759 | \r | |
760 | //\r | |
761 | // The format of the Status Code option is:\r | |
762 | //\r | |
763 | // 0 1 2 3\r | |
764 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1\r | |
765 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
766 | // | OPTION_STATUS_CODE | option-len |\r | |
767 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
768 | // | status-code | |\r | |
769 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |\r | |
770 | // . .\r | |
771 | // . status-message .\r | |
772 | // . .\r | |
773 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
774 | //\r | |
775 | \r | |
776 | //\r | |
777 | // sizeof (option-code + option-len) = 4\r | |
778 | //\r | |
779 | *Option = Dhcp6SeekOption (IaInnerOpt, IaInnerLen, Dhcp6OptStatusCode);\r | |
780 | if (*Option != NULL) {\r | |
781 | StsCode = NTOHS (ReadUnaligned16 ((UINT16 *) (*Option + 4)));\r | |
782 | if (StsCode != Dhcp6StsSuccess) {\r | |
783 | return EFI_DEVICE_ERROR;\r | |
784 | }\r | |
785 | }\r | |
786 | \r | |
787 | return EFI_SUCCESS;\r | |
788 | }\r | |
789 | \r | |
790 | \r | |
791 | /**\r | |
792 | Transmit Dhcp6 message by udpio.\r | |
793 | \r | |
794 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
795 | @param[in] Packet The pointer to transmit message.\r | |
796 | @param[in] Elapsed The pointer to the elapsed time value to fill in.\r | |
797 | \r | |
798 | @retval EFI_SUCCESS Successfully transmitted the packet.\r | |
799 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
800 | @retval Others Failed to transmit the packet.\r | |
801 | \r | |
802 | **/\r | |
803 | EFI_STATUS\r | |
804 | Dhcp6TransmitPacket (\r | |
805 | IN DHCP6_INSTANCE *Instance,\r | |
806 | IN EFI_DHCP6_PACKET *Packet,\r | |
807 | IN UINT16 *Elapsed\r | |
808 | )\r | |
809 | {\r | |
810 | EFI_STATUS Status;\r | |
811 | NET_BUF *Wrap;\r | |
812 | NET_FRAGMENT Frag;\r | |
813 | UDP_END_POINT EndPt;\r | |
814 | DHCP6_SERVICE *Service;\r | |
815 | \r | |
816 | Service = Instance->Service;\r | |
817 | \r | |
818 | //\r | |
819 | // Wrap it into a netbuf then send it.\r | |
820 | //\r | |
821 | Frag.Bulk = (UINT8 *) &Packet->Dhcp6.Header;\r | |
822 | Frag.Len = Packet->Length;\r | |
823 | \r | |
824 | //\r | |
825 | // Do not register free packet here, which will be handled in retry list.\r | |
826 | //\r | |
827 | Wrap = NetbufFromExt (&Frag, 1, 0, 0, Dhcp6DummyExtFree, NULL);\r | |
828 | \r | |
829 | if (Wrap == NULL) {\r | |
830 | return EFI_OUT_OF_RESOURCES;\r | |
831 | }\r | |
832 | \r | |
833 | //\r | |
834 | // Multicast the Dhcp6 message, unless get the unicast server address by option.\r | |
835 | //\r | |
836 | ZeroMem (&EndPt, sizeof (UDP_END_POINT));\r | |
837 | \r | |
838 | if (Instance->Unicast != NULL) {\r | |
839 | CopyMem (\r | |
840 | &EndPt.RemoteAddr,\r | |
841 | Instance->Unicast,\r | |
842 | sizeof (EFI_IPv6_ADDRESS)\r | |
843 | );\r | |
844 | } else {\r | |
845 | CopyMem (\r | |
846 | &EndPt.RemoteAddr,\r | |
847 | &mAllDhcpRelayAndServersAddress,\r | |
848 | sizeof (EFI_IPv6_ADDRESS)\r | |
849 | );\r | |
850 | }\r | |
851 | \r | |
852 | EndPt.RemotePort = DHCP6_PORT_SERVER;\r | |
853 | EndPt.LocalPort = DHCP6_PORT_CLIENT;\r | |
854 | \r | |
855 | //\r | |
856 | // Update the elapsed time value.\r | |
857 | //\r | |
858 | if (Elapsed != NULL) {\r | |
859 | SetElapsedTime (Elapsed, Instance);\r | |
860 | }\r | |
861 | \r | |
862 | //\r | |
863 | // Send out the message by the configured Udp6Io.\r | |
864 | //\r | |
865 | Status = UdpIoSendDatagram (\r | |
866 | Service->UdpIo,\r | |
867 | Wrap,\r | |
868 | &EndPt,\r | |
869 | NULL,\r | |
870 | Dhcp6OnTransmitted,\r | |
871 | NULL\r | |
872 | );\r | |
873 | \r | |
874 | if (EFI_ERROR (Status)) {\r | |
875 | NetbufFree (Wrap);\r | |
876 | return Status;\r | |
877 | }\r | |
878 | \r | |
879 | return EFI_SUCCESS;\r | |
880 | }\r | |
881 | \r | |
882 | \r | |
883 | /**\r | |
884 | Create the solicit message and send it.\r | |
885 | \r | |
886 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
887 | \r | |
888 | @retval EFI_SUCCESS Created and sent the solicit message successfully.\r | |
889 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
890 | @retval Others Failed to send the solicit message.\r | |
891 | \r | |
892 | **/\r | |
893 | EFI_STATUS\r | |
894 | Dhcp6SendSolicitMsg (\r | |
895 | IN DHCP6_INSTANCE *Instance\r | |
896 | )\r | |
897 | {\r | |
898 | EFI_STATUS Status;\r | |
899 | EFI_DHCP6_PACKET *Packet;\r | |
900 | EFI_DHCP6_PACKET_OPTION *UserOpt;\r | |
901 | EFI_DHCP6_DUID *ClientId;\r | |
902 | DHCP6_SERVICE *Service;\r | |
903 | UINT8 *Cursor;\r | |
904 | UINT16 *Elapsed;\r | |
905 | UINT32 UserLen;\r | |
906 | UINTN Index;\r | |
907 | UINT16 Length;\r | |
908 | \r | |
909 | Service = Instance->Service;\r | |
910 | ClientId = Service->ClientId;\r | |
911 | UserLen = 0;\r | |
912 | \r | |
913 | ASSERT (Service->ClientId != NULL);\r | |
914 | ASSERT (Instance->Config != NULL);\r | |
915 | ASSERT (Instance->IaCb.Ia != NULL);\r | |
916 | \r | |
917 | //\r | |
918 | // Calculate the added length of customized option list.\r | |
919 | //\r | |
920 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
921 | UserLen += (NTOHS (Instance->Config->OptionList[Index]->OpLen) + 4);\r | |
922 | }\r | |
923 | \r | |
924 | //\r | |
925 | // Create the Dhcp6 packet and initialize commone fields.\r | |
926 | //\r | |
927 | Packet = AllocateZeroPool (DHCP6_BASE_PACKET_SIZE + UserLen);\r | |
928 | if (Packet == NULL) {\r | |
929 | return EFI_OUT_OF_RESOURCES;\r | |
930 | }\r | |
931 | \r | |
932 | Packet->Size = DHCP6_BASE_PACKET_SIZE + UserLen;\r | |
933 | Packet->Length = sizeof (EFI_DHCP6_HEADER);\r | |
934 | Packet->Dhcp6.Header.MessageType = Dhcp6MsgSolicit;\r | |
935 | Packet->Dhcp6.Header.TransactionId = Service->Xid++;\r | |
936 | \r | |
937 | //\r | |
938 | // Assembly Dhcp6 options for solicit message.\r | |
939 | //\r | |
940 | Cursor = Packet->Dhcp6.Option;\r | |
941 | \r | |
942 | Length = HTONS (ClientId->Length);\r | |
943 | Cursor = Dhcp6AppendOption (\r | |
944 | Cursor,\r | |
945 | HTONS (Dhcp6OptClientId),\r | |
946 | Length,\r | |
947 | ClientId->Duid\r | |
948 | );\r | |
949 | \r | |
950 | Cursor = Dhcp6AppendETOption (\r | |
951 | Cursor,\r | |
952 | Instance,\r | |
953 | &Elapsed\r | |
954 | );\r | |
955 | \r | |
956 | Cursor = Dhcp6AppendIaOption (\r | |
957 | Cursor,\r | |
958 | Instance->IaCb.Ia,\r | |
959 | Instance->IaCb.T1,\r | |
685e44a5 | 960 | Instance->IaCb.T2,\r |
961 | Packet->Dhcp6.Header.MessageType\r | |
a3bcde70 HT |
962 | );\r |
963 | \r | |
964 | //\r | |
965 | // Append user-defined when configurate Dhcp6 service.\r | |
966 | //\r | |
967 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
968 | \r | |
969 | UserOpt = Instance->Config->OptionList[Index];\r | |
970 | Cursor = Dhcp6AppendOption(\r | |
971 | Cursor,\r | |
972 | UserOpt->OpCode,\r | |
973 | UserOpt->OpLen,\r | |
974 | UserOpt->Data\r | |
975 | );\r | |
976 | }\r | |
977 | \r | |
978 | //\r | |
979 | // Determine the size/length of packet.\r | |
980 | //\r | |
981 | Packet->Length += (UINT32) (Cursor - Packet->Dhcp6.Option);\r | |
982 | ASSERT (Packet->Size > Packet->Length + 8);\r | |
983 | \r | |
984 | //\r | |
985 | // Callback to user with the packet to be sent and check the user's feedback.\r | |
986 | //\r | |
987 | Status = Dhcp6CallbackUser (Instance, Dhcp6SendSolicit, &Packet);\r | |
988 | \r | |
989 | if (EFI_ERROR (Status)) {\r | |
990 | FreePool (Packet);\r | |
991 | return Status;\r | |
992 | }\r | |
993 | \r | |
994 | //\r | |
995 | // Send solicit packet with the state transition from Dhcp6init to\r | |
996 | // Dhcp6selecting.\r | |
997 | //\r | |
998 | Instance->IaCb.Ia->State = Dhcp6Selecting;\r | |
685e44a5 | 999 | //\r |
1000 | // Clear initial time for current transaction.\r | |
1001 | //\r | |
1002 | Instance->StartTime = 0;\r | |
a3bcde70 HT |
1003 | \r |
1004 | Status = Dhcp6TransmitPacket (Instance, Packet, Elapsed);\r | |
1005 | \r | |
1006 | if (EFI_ERROR (Status)) {\r | |
1007 | FreePool (Packet);\r | |
1008 | return Status;\r | |
1009 | }\r | |
1010 | \r | |
1011 | //\r | |
1012 | // Enqueue the sent packet for the retransmission in case reply timeout.\r | |
1013 | //\r | |
1014 | return Dhcp6EnqueueRetry (\r | |
1015 | Instance,\r | |
1016 | Packet,\r | |
1017 | Elapsed,\r | |
1018 | Instance->Config->SolicitRetransmission\r | |
1019 | );\r | |
1020 | }\r | |
1021 | \r | |
1022 | /**\r | |
1023 | Configure some parameter to initiate SolicitMsg.\r | |
1024 | \r | |
1025 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1026 | \r | |
1027 | @retval EFI_SUCCESS Created and sent the solicit message successfully.\r | |
1028 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1029 | @retval Others Failed to send the solicit message.\r | |
1030 | \r | |
1031 | **/\r | |
1032 | EFI_STATUS\r | |
1033 | Dhcp6InitSolicitMsg (\r | |
1034 | IN DHCP6_INSTANCE *Instance\r | |
1035 | )\r | |
1036 | {\r | |
1037 | Instance->IaCb.T1 = 0;\r | |
1038 | Instance->IaCb.T2 = 0;\r | |
1039 | Instance->IaCb.Ia->IaAddressCount = 0;\r | |
1040 | \r | |
1041 | return Dhcp6SendSolicitMsg (Instance);\r | |
1042 | }\r | |
1043 | \r | |
1044 | \r | |
1045 | /**\r | |
1046 | Create the request message and send it.\r | |
1047 | \r | |
1048 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1049 | \r | |
1050 | @retval EFI_SUCCESS Created and sent the request message successfully.\r | |
1051 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1052 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
1053 | @retval Others Failed to send the request message.\r | |
1054 | \r | |
1055 | **/\r | |
1056 | EFI_STATUS\r | |
1057 | Dhcp6SendRequestMsg (\r | |
1058 | IN DHCP6_INSTANCE *Instance\r | |
1059 | )\r | |
1060 | {\r | |
1061 | EFI_STATUS Status;\r | |
1062 | EFI_DHCP6_PACKET *Packet;\r | |
1063 | EFI_DHCP6_PACKET_OPTION *UserOpt;\r | |
1064 | EFI_DHCP6_DUID *ClientId;\r | |
1065 | EFI_DHCP6_DUID *ServerId;\r | |
1066 | DHCP6_SERVICE *Service;\r | |
1067 | UINT8 *Option;\r | |
1068 | UINT8 *Cursor;\r | |
1069 | UINT16 *Elapsed;\r | |
1070 | UINT32 UserLen;\r | |
1071 | UINTN Index;\r | |
1072 | UINT16 Length;\r | |
1073 | \r | |
1074 | ASSERT(Instance->AdSelect != NULL);\r | |
1075 | ASSERT(Instance->Config != NULL);\r | |
1076 | ASSERT(Instance->IaCb.Ia != NULL);\r | |
1077 | ASSERT(Instance->Service != NULL);\r | |
1078 | \r | |
1079 | Service = Instance->Service;\r | |
1080 | ClientId = Service->ClientId;\r | |
1081 | \r | |
1082 | ASSERT(ClientId != NULL);\r | |
1083 | \r | |
1084 | //\r | |
1085 | // Get the server Id from the selected advertisement message.\r | |
1086 | //\r | |
1087 | Option = Dhcp6SeekOption (\r | |
1088 | Instance->AdSelect->Dhcp6.Option,\r | |
1089 | Instance->AdSelect->Length - 4,\r | |
1090 | Dhcp6OptServerId\r | |
1091 | );\r | |
1092 | if (Option == NULL) {\r | |
1093 | return EFI_DEVICE_ERROR;\r | |
1094 | }\r | |
1095 | \r | |
1096 | ServerId = (EFI_DHCP6_DUID *) (Option + 2);\r | |
1097 | \r | |
1098 | //\r | |
1099 | // Calculate the added length of customized option list.\r | |
1100 | //\r | |
1101 | UserLen = 0;\r | |
1102 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
1103 | UserLen += (NTOHS (Instance->Config->OptionList[Index]->OpLen) + 4);\r | |
1104 | }\r | |
1105 | \r | |
1106 | //\r | |
1107 | // Create the Dhcp6 packet and initialize commone fields.\r | |
1108 | //\r | |
1109 | Packet = AllocateZeroPool (DHCP6_BASE_PACKET_SIZE + UserLen);\r | |
1110 | if (Packet == NULL) {\r | |
1111 | return EFI_OUT_OF_RESOURCES;\r | |
1112 | }\r | |
1113 | \r | |
1114 | Packet->Size = DHCP6_BASE_PACKET_SIZE + UserLen;\r | |
1115 | Packet->Length = sizeof (EFI_DHCP6_HEADER);\r | |
1116 | Packet->Dhcp6.Header.MessageType = Dhcp6MsgRequest;\r | |
1117 | Packet->Dhcp6.Header.TransactionId = Service->Xid++;\r | |
1118 | \r | |
1119 | //\r | |
1120 | // Assembly Dhcp6 options for request message.\r | |
1121 | //\r | |
1122 | Cursor = Packet->Dhcp6.Option;\r | |
1123 | \r | |
1124 | Length = HTONS (ClientId->Length);\r | |
1125 | Cursor = Dhcp6AppendOption (\r | |
1126 | Cursor,\r | |
1127 | HTONS (Dhcp6OptClientId),\r | |
1128 | Length,\r | |
1129 | ClientId->Duid\r | |
1130 | );\r | |
1131 | \r | |
1132 | Cursor = Dhcp6AppendETOption (\r | |
1133 | Cursor,\r | |
1134 | Instance,\r | |
1135 | &Elapsed\r | |
1136 | );\r | |
1137 | \r | |
1138 | Cursor = Dhcp6AppendOption (\r | |
1139 | Cursor,\r | |
1140 | HTONS (Dhcp6OptServerId),\r | |
1141 | ServerId->Length,\r | |
1142 | ServerId->Duid\r | |
1143 | );\r | |
1144 | \r | |
1145 | Cursor = Dhcp6AppendIaOption (\r | |
1146 | Cursor,\r | |
1147 | Instance->IaCb.Ia,\r | |
1148 | Instance->IaCb.T1,\r | |
685e44a5 | 1149 | Instance->IaCb.T2,\r |
1150 | Packet->Dhcp6.Header.MessageType\r | |
a3bcde70 HT |
1151 | );\r |
1152 | \r | |
1153 | //\r | |
1154 | // Append user-defined when configurate Dhcp6 service.\r | |
1155 | //\r | |
1156 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
1157 | \r | |
1158 | UserOpt = Instance->Config->OptionList[Index];\r | |
1159 | Cursor = Dhcp6AppendOption(\r | |
1160 | Cursor,\r | |
1161 | UserOpt->OpCode,\r | |
1162 | UserOpt->OpLen,\r | |
1163 | UserOpt->Data\r | |
1164 | );\r | |
1165 | }\r | |
1166 | \r | |
1167 | //\r | |
1168 | // Determine the size/length of packet.\r | |
1169 | //\r | |
1170 | Packet->Length += (UINT32) (Cursor - Packet->Dhcp6.Option);\r | |
1171 | ASSERT (Packet->Size > Packet->Length + 8);\r | |
1172 | \r | |
1173 | //\r | |
1174 | // Callback to user with the packet to be sent and check the user's feedback.\r | |
1175 | //\r | |
1176 | Status = Dhcp6CallbackUser (Instance, Dhcp6SendRequest, &Packet);\r | |
1177 | \r | |
1178 | if (EFI_ERROR (Status)) {\r | |
1179 | FreePool (Packet);\r | |
1180 | return Status;\r | |
1181 | }\r | |
1182 | \r | |
1183 | //\r | |
1184 | // Send request packet with the state transition from Dhcp6selecting to\r | |
1185 | // Dhcp6requesting.\r | |
1186 | //\r | |
1187 | Instance->IaCb.Ia->State = Dhcp6Requesting;\r | |
685e44a5 | 1188 | //\r |
1189 | // Clear initial time for current transaction.\r | |
1190 | //\r | |
1191 | Instance->StartTime = 0;\r | |
a3bcde70 HT |
1192 | \r |
1193 | Status = Dhcp6TransmitPacket (Instance, Packet, Elapsed);\r | |
1194 | \r | |
1195 | if (EFI_ERROR (Status)) {\r | |
1196 | FreePool (Packet);\r | |
1197 | return Status;\r | |
1198 | }\r | |
1199 | \r | |
1200 | //\r | |
1201 | // Enqueue the sent packet for the retransmission in case reply timeout.\r | |
1202 | //\r | |
1203 | return Dhcp6EnqueueRetry (Instance, Packet, Elapsed, NULL);\r | |
1204 | }\r | |
1205 | \r | |
1206 | \r | |
1207 | /**\r | |
1208 | Create the decline message and send it.\r | |
1209 | \r | |
1210 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1211 | @param[in] DecIa The pointer to the decline Ia.\r | |
1212 | \r | |
1213 | @retval EFI_SUCCESS Created and sent the decline message successfully.\r | |
1214 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1215 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
1216 | @retval Others Failed to send the decline message.\r | |
1217 | \r | |
1218 | **/\r | |
1219 | EFI_STATUS\r | |
1220 | Dhcp6SendDeclineMsg (\r | |
1221 | IN DHCP6_INSTANCE *Instance,\r | |
1222 | IN EFI_DHCP6_IA *DecIa\r | |
1223 | )\r | |
1224 | {\r | |
1225 | EFI_STATUS Status;\r | |
1226 | EFI_DHCP6_PACKET *Packet;\r | |
1227 | EFI_DHCP6_PACKET *LastReply;\r | |
1228 | EFI_DHCP6_DUID *ClientId;\r | |
1229 | EFI_DHCP6_DUID *ServerId;\r | |
1230 | DHCP6_SERVICE *Service;\r | |
1231 | UINT8 *Option;\r | |
1232 | UINT8 *Cursor;\r | |
1233 | UINT16 *Elapsed;\r | |
1234 | UINT16 Length;\r | |
1235 | \r | |
1236 | ASSERT (Instance->Config != NULL);\r | |
1237 | ASSERT (Instance->IaCb.Ia != NULL);\r | |
1238 | ASSERT (Instance->Service != NULL);\r | |
1239 | \r | |
1240 | Service = Instance->Service;\r | |
1241 | ClientId = Service->ClientId;\r | |
1242 | LastReply = Instance->IaCb.Ia->ReplyPacket;\r | |
1243 | \r | |
1244 | ASSERT (ClientId != NULL);\r | |
1245 | ASSERT (LastReply != NULL);\r | |
1246 | \r | |
1247 | //\r | |
1248 | // Get the server Id from the last reply message.\r | |
1249 | //\r | |
1250 | Option = Dhcp6SeekOption (\r | |
1251 | LastReply->Dhcp6.Option,\r | |
1252 | LastReply->Length - 4,\r | |
1253 | Dhcp6OptServerId\r | |
1254 | );\r | |
1255 | if (Option == NULL) {\r | |
1256 | return EFI_DEVICE_ERROR;\r | |
1257 | }\r | |
1258 | \r | |
1259 | //\r | |
1260 | // EFI_DHCP6_DUID contains a length field of 2 bytes.\r | |
1261 | //\r | |
1262 | ServerId = (EFI_DHCP6_DUID *) (Option + 2);\r | |
1263 | \r | |
1264 | //\r | |
1265 | // Create the Dhcp6 packet and initialize commone fields.\r | |
1266 | //\r | |
1267 | Packet = AllocateZeroPool (DHCP6_BASE_PACKET_SIZE);\r | |
1268 | if (Packet == NULL) {\r | |
1269 | return EFI_OUT_OF_RESOURCES;\r | |
1270 | }\r | |
1271 | \r | |
1272 | Packet->Size = DHCP6_BASE_PACKET_SIZE;\r | |
1273 | Packet->Length = sizeof (EFI_DHCP6_HEADER);\r | |
1274 | Packet->Dhcp6.Header.MessageType = Dhcp6MsgDecline;\r | |
1275 | Packet->Dhcp6.Header.TransactionId = Service->Xid++;\r | |
1276 | \r | |
1277 | //\r | |
1278 | // Assembly Dhcp6 options for rebind/renew message.\r | |
1279 | //\r | |
1280 | Cursor = Packet->Dhcp6.Option;\r | |
1281 | \r | |
1282 | Length = HTONS (ClientId->Length);\r | |
1283 | Cursor = Dhcp6AppendOption (\r | |
1284 | Cursor,\r | |
1285 | HTONS (Dhcp6OptClientId),\r | |
1286 | Length,\r | |
1287 | ClientId->Duid\r | |
1288 | );\r | |
1289 | \r | |
1290 | Cursor = Dhcp6AppendETOption (\r | |
1291 | Cursor,\r | |
1292 | Instance,\r | |
1293 | &Elapsed\r | |
1294 | );\r | |
1295 | \r | |
1296 | Cursor = Dhcp6AppendOption (\r | |
1297 | Cursor,\r | |
1298 | HTONS (Dhcp6OptServerId),\r | |
1299 | ServerId->Length,\r | |
1300 | ServerId->Duid\r | |
1301 | );\r | |
1302 | \r | |
685e44a5 | 1303 | Cursor = Dhcp6AppendIaOption (Cursor, DecIa, 0, 0, Packet->Dhcp6.Header.MessageType);\r |
a3bcde70 HT |
1304 | \r |
1305 | //\r | |
1306 | // Determine the size/length of packet.\r | |
1307 | //\r | |
1308 | Packet->Length += (UINT32) (Cursor - Packet->Dhcp6.Option);\r | |
1309 | ASSERT (Packet->Size > Packet->Length + 8);\r | |
1310 | \r | |
1311 | //\r | |
1312 | // Callback to user with the packet to be sent and check the user's feedback.\r | |
1313 | //\r | |
1314 | Status = Dhcp6CallbackUser (Instance, Dhcp6SendDecline, &Packet);\r | |
1315 | \r | |
1316 | if (EFI_ERROR (Status)) {\r | |
1317 | FreePool (Packet);\r | |
1318 | return Status;\r | |
1319 | }\r | |
1320 | \r | |
1321 | //\r | |
1322 | // Send decline packet with the state transition from Dhcp6bound to\r | |
1323 | // Dhcp6declining.\r | |
1324 | //\r | |
1325 | Instance->IaCb.Ia->State = Dhcp6Declining;\r | |
685e44a5 | 1326 | //\r |
1327 | // Clear initial time for current transaction.\r | |
1328 | //\r | |
1329 | Instance->StartTime = 0;\r | |
a3bcde70 HT |
1330 | \r |
1331 | Status = Dhcp6TransmitPacket (Instance, Packet, Elapsed);\r | |
1332 | \r | |
1333 | if (EFI_ERROR (Status)) {\r | |
1334 | FreePool (Packet);\r | |
1335 | return Status;\r | |
1336 | }\r | |
1337 | \r | |
1338 | //\r | |
1339 | // Enqueue the sent packet for the retransmission in case reply timeout.\r | |
1340 | //\r | |
1341 | return Dhcp6EnqueueRetry (Instance, Packet, Elapsed, NULL);\r | |
1342 | }\r | |
1343 | \r | |
1344 | \r | |
1345 | /**\r | |
1346 | Create the release message and send it.\r | |
1347 | \r | |
1348 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1349 | @param[in] RelIa The pointer to the release Ia.\r | |
1350 | \r | |
1351 | @retval EFI_SUCCESS Created and sent the release message successfully.\r | |
1352 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1353 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
1354 | @retval Others Failed to send the release message.\r | |
1355 | \r | |
1356 | **/\r | |
1357 | EFI_STATUS\r | |
1358 | Dhcp6SendReleaseMsg (\r | |
1359 | IN DHCP6_INSTANCE *Instance,\r | |
1360 | IN EFI_DHCP6_IA *RelIa\r | |
1361 | )\r | |
1362 | {\r | |
1363 | EFI_STATUS Status;\r | |
1364 | EFI_DHCP6_PACKET *Packet;\r | |
1365 | EFI_DHCP6_PACKET *LastReply;\r | |
1366 | EFI_DHCP6_DUID *ClientId;\r | |
1367 | EFI_DHCP6_DUID *ServerId;\r | |
1368 | DHCP6_SERVICE *Service;\r | |
1369 | UINT8 *Option;\r | |
1370 | UINT8 *Cursor;\r | |
1371 | UINT16 *Elapsed;\r | |
1372 | UINT16 Length;\r | |
1373 | \r | |
1374 | ASSERT(Instance->Config);\r | |
1375 | ASSERT(Instance->IaCb.Ia);\r | |
1376 | \r | |
1377 | Service = Instance->Service;\r | |
1378 | ClientId = Service->ClientId;\r | |
1379 | LastReply = Instance->IaCb.Ia->ReplyPacket;\r | |
1380 | \r | |
1381 | ASSERT(ClientId);\r | |
1382 | ASSERT(LastReply);\r | |
1383 | \r | |
1384 | //\r | |
1385 | // Get the server Id from the last reply message.\r | |
1386 | //\r | |
1387 | Option = Dhcp6SeekOption (\r | |
1388 | LastReply->Dhcp6.Option,\r | |
1389 | LastReply->Length - 4,\r | |
1390 | Dhcp6OptServerId\r | |
1391 | );\r | |
1392 | if (Option == NULL) {\r | |
1393 | return EFI_DEVICE_ERROR;\r | |
1394 | }\r | |
1395 | \r | |
1396 | ServerId = (EFI_DHCP6_DUID *) (Option + 2);\r | |
1397 | \r | |
1398 | //\r | |
1399 | // Create the Dhcp6 packet and initialize commone fields.\r | |
1400 | //\r | |
1401 | Packet = AllocateZeroPool (DHCP6_BASE_PACKET_SIZE);\r | |
1402 | if (Packet == NULL) {\r | |
1403 | return EFI_OUT_OF_RESOURCES;\r | |
1404 | }\r | |
1405 | \r | |
1406 | Packet->Size = DHCP6_BASE_PACKET_SIZE;\r | |
1407 | Packet->Length = sizeof (EFI_DHCP6_HEADER);\r | |
1408 | Packet->Dhcp6.Header.MessageType = Dhcp6MsgRelease;\r | |
1409 | Packet->Dhcp6.Header.TransactionId = Service->Xid++;\r | |
1410 | \r | |
1411 | //\r | |
1412 | // Assembly Dhcp6 options for rebind/renew message\r | |
1413 | //\r | |
1414 | Cursor = Packet->Dhcp6.Option;\r | |
1415 | \r | |
1416 | Length = HTONS (ClientId->Length);\r | |
1417 | Cursor = Dhcp6AppendOption (\r | |
1418 | Cursor,\r | |
1419 | HTONS (Dhcp6OptClientId),\r | |
1420 | Length,\r | |
1421 | ClientId->Duid\r | |
1422 | );\r | |
1423 | \r | |
1424 | //\r | |
1425 | // ServerId is extracted from packet, it's network order.\r | |
1426 | //\r | |
1427 | Cursor = Dhcp6AppendOption (\r | |
1428 | Cursor,\r | |
1429 | HTONS (Dhcp6OptServerId),\r | |
1430 | ServerId->Length,\r | |
1431 | ServerId->Duid\r | |
1432 | );\r | |
1433 | \r | |
1434 | Cursor = Dhcp6AppendETOption (\r | |
1435 | Cursor,\r | |
1436 | Instance,\r | |
1437 | &Elapsed\r | |
1438 | );\r | |
1439 | \r | |
685e44a5 | 1440 | Cursor = Dhcp6AppendIaOption (Cursor, RelIa, 0, 0, Packet->Dhcp6.Header.MessageType);\r |
a3bcde70 HT |
1441 | \r |
1442 | //\r | |
1443 | // Determine the size/length of packet\r | |
1444 | //\r | |
1445 | Packet->Length += (UINT32) (Cursor - Packet->Dhcp6.Option);\r | |
1446 | ASSERT (Packet->Size > Packet->Length + 8);\r | |
1447 | \r | |
1448 | //\r | |
1449 | // Callback to user with the packet to be sent and check the user's feedback.\r | |
1450 | //\r | |
1451 | Status = Dhcp6CallbackUser (Instance, Dhcp6SendRelease, &Packet);\r | |
1452 | \r | |
1453 | if (EFI_ERROR (Status)) {\r | |
1454 | FreePool (Packet);\r | |
1455 | return Status;\r | |
1456 | }\r | |
1457 | \r | |
1458 | //\r | |
1459 | // Send release packet with the state transition from Dhcp6bound to\r | |
1460 | // Dhcp6releasing.\r | |
1461 | //\r | |
1462 | Instance->IaCb.Ia->State = Dhcp6Releasing;\r | |
1463 | \r | |
1464 | Status = Dhcp6TransmitPacket (Instance, Packet, Elapsed);\r | |
1465 | \r | |
1466 | if (EFI_ERROR (Status)) {\r | |
1467 | FreePool (Packet);\r | |
1468 | return Status;\r | |
1469 | }\r | |
1470 | \r | |
1471 | //\r | |
1472 | // Enqueue the sent packet for the retransmission in case reply timeout.\r | |
1473 | //\r | |
1474 | return Dhcp6EnqueueRetry (Instance, Packet, Elapsed, NULL);\r | |
1475 | }\r | |
1476 | \r | |
1477 | \r | |
1478 | /**\r | |
1479 | Create the renew/rebind message and send it.\r | |
1480 | \r | |
1481 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1482 | @param[in] RebindRequest If TRUE, it is a Rebind type message.\r | |
1483 | Otherwise, it is a Renew type message.\r | |
1484 | \r | |
1485 | @retval EFI_SUCCESS Created and sent the renew/rebind message successfully.\r | |
1486 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1487 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
1488 | @retval Others Failed to send the renew/rebind message.\r | |
1489 | \r | |
1490 | **/\r | |
1491 | EFI_STATUS\r | |
1492 | Dhcp6SendRenewRebindMsg (\r | |
1493 | IN DHCP6_INSTANCE *Instance,\r | |
1494 | IN BOOLEAN RebindRequest\r | |
1495 | )\r | |
1496 | {\r | |
1497 | EFI_STATUS Status;\r | |
1498 | EFI_DHCP6_PACKET *Packet;\r | |
1499 | EFI_DHCP6_PACKET *LastReply;\r | |
1500 | EFI_DHCP6_PACKET_OPTION *UserOpt;\r | |
1501 | EFI_DHCP6_DUID *ClientId;\r | |
1502 | EFI_DHCP6_DUID *ServerId;\r | |
1503 | EFI_DHCP6_STATE State;\r | |
1504 | EFI_DHCP6_EVENT Event;\r | |
1505 | DHCP6_SERVICE *Service;\r | |
1506 | UINT8 *Option;\r | |
1507 | UINT8 *Cursor;\r | |
1508 | UINT16 *Elapsed;\r | |
1509 | UINT32 UserLen;\r | |
1510 | UINTN Index;\r | |
1511 | UINT16 Length;\r | |
1512 | \r | |
1513 | ASSERT(Instance->Config);\r | |
1514 | ASSERT(Instance->IaCb.Ia);\r | |
1515 | \r | |
1516 | Service = Instance->Service;\r | |
1517 | ClientId = Service->ClientId;\r | |
1518 | \r | |
1519 | ASSERT(ClientId);\r | |
1520 | \r | |
1521 | //\r | |
1522 | // Calculate the added length of customized option list.\r | |
1523 | //\r | |
1524 | UserLen = 0;\r | |
1525 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
1526 | UserLen += (NTOHS (Instance->Config->OptionList[Index]->OpLen) + 4);\r | |
1527 | }\r | |
1528 | \r | |
1529 | //\r | |
1530 | // Create the Dhcp6 packet and initialize commone fields.\r | |
1531 | //\r | |
1532 | Packet = AllocateZeroPool (DHCP6_BASE_PACKET_SIZE + UserLen);\r | |
1533 | if (Packet == NULL) {\r | |
1534 | return EFI_OUT_OF_RESOURCES;\r | |
1535 | }\r | |
1536 | \r | |
1537 | Packet->Size = DHCP6_BASE_PACKET_SIZE + UserLen;\r | |
1538 | Packet->Length = sizeof (EFI_DHCP6_HEADER);\r | |
1539 | Packet->Dhcp6.Header.MessageType = RebindRequest ? Dhcp6MsgRebind : Dhcp6MsgRenew;\r | |
1540 | Packet->Dhcp6.Header.TransactionId = Service->Xid++;\r | |
1541 | \r | |
1542 | //\r | |
1543 | // Assembly Dhcp6 options for rebind/renew message.\r | |
1544 | //\r | |
1545 | Cursor = Packet->Dhcp6.Option;\r | |
1546 | \r | |
1547 | Length = HTONS (ClientId->Length);\r | |
1548 | Cursor = Dhcp6AppendOption (\r | |
1549 | Cursor,\r | |
1550 | HTONS (Dhcp6OptClientId),\r | |
1551 | Length,\r | |
1552 | ClientId->Duid\r | |
1553 | );\r | |
1554 | \r | |
1555 | Cursor = Dhcp6AppendETOption (\r | |
1556 | Cursor,\r | |
1557 | Instance,\r | |
1558 | &Elapsed\r | |
1559 | );\r | |
1560 | \r | |
1561 | Cursor = Dhcp6AppendIaOption (\r | |
1562 | Cursor,\r | |
1563 | Instance->IaCb.Ia,\r | |
1564 | Instance->IaCb.T1,\r | |
685e44a5 | 1565 | Instance->IaCb.T2,\r |
1566 | Packet->Dhcp6.Header.MessageType\r | |
a3bcde70 HT |
1567 | );\r |
1568 | \r | |
1569 | if (!RebindRequest) {\r | |
1570 | //\r | |
1571 | // Get the server Id from the last reply message and\r | |
1572 | // insert it for rebind request.\r | |
1573 | //\r | |
1574 | LastReply = Instance->IaCb.Ia->ReplyPacket;\r | |
1575 | ASSERT (LastReply);\r | |
1576 | \r | |
1577 | Option = Dhcp6SeekOption (\r | |
1578 | LastReply->Dhcp6.Option,\r | |
1579 | LastReply->Length - 4,\r | |
1580 | Dhcp6OptServerId\r | |
1581 | );\r | |
1582 | if (Option == NULL) {\r | |
1583 | FreePool (Packet);\r | |
1584 | return EFI_DEVICE_ERROR;\r | |
1585 | }\r | |
1586 | \r | |
1587 | ServerId = (EFI_DHCP6_DUID *) (Option + 2);\r | |
1588 | \r | |
1589 | Cursor = Dhcp6AppendOption (\r | |
1590 | Cursor,\r | |
1591 | HTONS (Dhcp6OptServerId),\r | |
1592 | ServerId->Length,\r | |
1593 | ServerId->Duid\r | |
1594 | );\r | |
1595 | }\r | |
1596 | \r | |
1597 | //\r | |
1598 | // Append user-defined when configurate Dhcp6 service.\r | |
1599 | //\r | |
1600 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
1601 | \r | |
1602 | UserOpt = Instance->Config->OptionList[Index];\r | |
1603 | Cursor = Dhcp6AppendOption(\r | |
1604 | Cursor,\r | |
1605 | UserOpt->OpCode,\r | |
1606 | UserOpt->OpLen,\r | |
1607 | UserOpt->Data\r | |
1608 | );\r | |
1609 | }\r | |
1610 | \r | |
1611 | //\r | |
1612 | // Determine the size/length of packet.\r | |
1613 | //\r | |
1614 | Packet->Length += (UINT32) (Cursor - Packet->Dhcp6.Option);\r | |
1615 | ASSERT (Packet->Size > Packet->Length + 8);\r | |
1616 | \r | |
1617 | //\r | |
1618 | // Callback to user with the packet to be sent and check the user's feedback.\r | |
1619 | //\r | |
1620 | State = (RebindRequest) ? Dhcp6Rebinding : Dhcp6Renewing;\r | |
1621 | Event = (RebindRequest) ? Dhcp6EnterRebinding : Dhcp6EnterRenewing;\r | |
1622 | \r | |
1623 | Status = Dhcp6CallbackUser (Instance, Event, &Packet);\r | |
1624 | \r | |
1625 | if (EFI_ERROR (Status)) {\r | |
1626 | FreePool (Packet);\r | |
1627 | return Status;\r | |
1628 | }\r | |
1629 | \r | |
1630 | //\r | |
1631 | // Send renew/rebind packet with the state transition from Dhcp6bound to\r | |
1632 | // Dhcp6renew/rebind.\r | |
1633 | // And sync the lease time when send renew/rebind, in case that user send\r | |
1634 | // renew/rebind actively.\r | |
1635 | //\r | |
1636 | Instance->IaCb.Ia->State = State;\r | |
1637 | Instance->IaCb.LeaseTime = (RebindRequest) ? Instance->IaCb.T2 : Instance->IaCb.T1;\r | |
685e44a5 | 1638 | //\r |
1639 | // Clear initial time for current transaction.\r | |
1640 | //\r | |
1641 | Instance->StartTime = 0;\r | |
a3bcde70 HT |
1642 | \r |
1643 | Status = Dhcp6TransmitPacket (Instance, Packet, Elapsed);\r | |
1644 | \r | |
1645 | if (EFI_ERROR (Status)) {\r | |
1646 | FreePool (Packet);\r | |
1647 | return Status;\r | |
1648 | }\r | |
1649 | \r | |
1650 | //\r | |
1651 | // Enqueue the sent packet for the retransmission in case reply timeout.\r | |
1652 | //\r | |
1653 | return Dhcp6EnqueueRetry (Instance, Packet, Elapsed, NULL);\r | |
1654 | }\r | |
1655 | \r | |
cc658224 | 1656 | /**\r |
1657 | Start the information request process.\r | |
1658 | \r | |
1659 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1660 | @param[in] SendClientId If TRUE, the client identifier option will be included in\r | |
1661 | information request message. Otherwise, the client identifier\r | |
1662 | option will not be included.\r | |
1663 | @param[in] OptionRequest The pointer to the option request option.\r | |
1664 | @param[in] OptionCount The number options in the OptionList.\r | |
1665 | @param[in] OptionList The array pointers to the appended options.\r | |
1666 | @param[in] Retransmission The pointer to the retransmission control.\r | |
1667 | @param[in] TimeoutEvent The event of timeout.\r | |
1668 | @param[in] ReplyCallback The callback function when the reply was received.\r | |
1669 | @param[in] CallbackContext The pointer to the parameter passed to the callback.\r | |
1670 | \r | |
1671 | @retval EFI_SUCCESS Start the info-request process successfully.\r | |
1672 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1673 | @retval EFI_NO_MAPPING No source address is available for use.\r | |
1674 | @retval Others Failed to start the info-request process.\r | |
1675 | \r | |
1676 | **/\r | |
1677 | EFI_STATUS\r | |
1678 | Dhcp6StartInfoRequest (\r | |
1679 | IN DHCP6_INSTANCE *Instance,\r | |
1680 | IN BOOLEAN SendClientId,\r | |
1681 | IN EFI_DHCP6_PACKET_OPTION *OptionRequest,\r | |
1682 | IN UINT32 OptionCount,\r | |
1683 | IN EFI_DHCP6_PACKET_OPTION *OptionList[] OPTIONAL,\r | |
1684 | IN EFI_DHCP6_RETRANSMISSION *Retransmission,\r | |
1685 | IN EFI_EVENT TimeoutEvent OPTIONAL,\r | |
1686 | IN EFI_DHCP6_INFO_CALLBACK ReplyCallback,\r | |
1687 | IN VOID *CallbackContext OPTIONAL\r | |
1688 | )\r | |
1689 | {\r | |
1690 | EFI_STATUS Status;\r | |
1691 | DHCP6_INF_CB *InfCb;\r | |
1692 | DHCP6_SERVICE *Service;\r | |
1693 | EFI_TPL OldTpl;\r | |
1694 | \r | |
1695 | Service = Instance->Service;\r | |
1696 | \r | |
1697 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
1698 | Instance->UdpSts = EFI_ALREADY_STARTED;\r | |
1699 | //\r | |
1700 | // Create and initialize the control block for the info-request.\r | |
1701 | //\r | |
1702 | InfCb = AllocateZeroPool (sizeof(DHCP6_INF_CB));\r | |
1703 | \r | |
1704 | if (InfCb == NULL) {\r | |
1705 | gBS->RestoreTPL (OldTpl);\r | |
1706 | return EFI_OUT_OF_RESOURCES;\r | |
1707 | }\r | |
1708 | \r | |
1709 | InfCb->ReplyCallback = ReplyCallback;\r | |
1710 | InfCb->CallbackContext = CallbackContext;\r | |
1711 | InfCb->TimeoutEvent = TimeoutEvent;\r | |
1712 | \r | |
1713 | InsertTailList (&Instance->InfList, &InfCb->Link);\r | |
1714 | \r | |
1715 | //\r | |
1716 | // Send the info-request message to start exchange process.\r | |
1717 | //\r | |
1718 | Status = Dhcp6SendInfoRequestMsg (\r | |
1719 | Instance,\r | |
1720 | InfCb,\r | |
1721 | SendClientId,\r | |
1722 | OptionRequest,\r | |
1723 | OptionCount,\r | |
1724 | OptionList,\r | |
1725 | Retransmission\r | |
1726 | );\r | |
1727 | \r | |
1728 | if (EFI_ERROR (Status)) {\r | |
1729 | goto ON_ERROR;\r | |
1730 | }\r | |
1731 | \r | |
1732 | //\r | |
1733 | // Register receive callback for the stateless exchange process.\r | |
1734 | //\r | |
1735 | Status = UdpIoRecvDatagram(\r | |
1736 | Service->UdpIo,\r | |
1737 | Dhcp6ReceivePacket,\r | |
1738 | Service,\r | |
1739 | 0\r | |
1740 | );\r | |
1741 | \r | |
1742 | if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {\r | |
1743 | goto ON_ERROR;\r | |
1744 | }\r | |
1745 | \r | |
1746 | gBS->RestoreTPL (OldTpl);\r | |
1747 | return EFI_SUCCESS;\r | |
1748 | \r | |
1749 | ON_ERROR:\r | |
1750 | gBS->RestoreTPL (OldTpl); \r | |
1751 | RemoveEntryList (&InfCb->Link);\r | |
1752 | FreePool (InfCb);\r | |
1753 | \r | |
1754 | return Status;\r | |
1755 | }\r | |
a3bcde70 HT |
1756 | \r |
1757 | /**\r | |
1758 | Create the information request message and send it.\r | |
1759 | \r | |
1760 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1761 | @param[in] InfCb The pointer to the information request control block.\r | |
1762 | @param[in] SendClientId If TRUE, the client identifier option will be included in\r | |
1763 | information request message. Otherwise, the client identifier\r | |
1764 | option will not be included.\r | |
1765 | @param[in] OptionRequest The pointer to the option request option.\r | |
1766 | @param[in] OptionCount The number options in the OptionList.\r | |
1767 | @param[in] OptionList The array pointers to the appended options.\r | |
1768 | @param[in] Retransmission The pointer to the retransmission control.\r | |
1769 | \r | |
1770 | @retval EFI_SUCCESS Created and sent the info-request message successfully.\r | |
1771 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1772 | @retval Others Failed to send the info-request message.\r | |
1773 | \r | |
1774 | **/\r | |
1775 | EFI_STATUS\r | |
1776 | Dhcp6SendInfoRequestMsg (\r | |
1777 | IN DHCP6_INSTANCE *Instance,\r | |
1778 | IN DHCP6_INF_CB *InfCb,\r | |
1779 | IN BOOLEAN SendClientId,\r | |
1780 | IN EFI_DHCP6_PACKET_OPTION *OptionRequest,\r | |
1781 | IN UINT32 OptionCount,\r | |
1782 | IN EFI_DHCP6_PACKET_OPTION *OptionList[],\r | |
1783 | IN EFI_DHCP6_RETRANSMISSION *Retransmission\r | |
1784 | )\r | |
1785 | {\r | |
1786 | EFI_STATUS Status;\r | |
1787 | EFI_DHCP6_PACKET *Packet;\r | |
1788 | EFI_DHCP6_PACKET_OPTION *UserOpt;\r | |
1789 | EFI_DHCP6_DUID *ClientId;\r | |
1790 | DHCP6_SERVICE *Service;\r | |
1791 | UINT8 *Cursor;\r | |
1792 | UINT16 *Elapsed;\r | |
1793 | UINT32 UserLen;\r | |
1794 | UINTN Index;\r | |
1795 | UINT16 Length;\r | |
1796 | \r | |
1797 | ASSERT(OptionRequest);\r | |
1798 | \r | |
1799 | Service = Instance->Service;\r | |
1800 | ClientId = Service->ClientId;\r | |
1801 | UserLen = NTOHS (OptionRequest->OpLen) + 4;\r | |
1802 | \r | |
1803 | ASSERT(ClientId);\r | |
1804 | \r | |
1805 | //\r | |
1806 | // Calculate the added length of customized option list.\r | |
1807 | //\r | |
1808 | for (Index = 0; Index < OptionCount; Index++) {\r | |
1809 | UserLen += (NTOHS (OptionList[Index]->OpLen) + 4);\r | |
1810 | }\r | |
1811 | \r | |
1812 | //\r | |
1813 | // Create the Dhcp6 packet and initialize commone fields.\r | |
1814 | //\r | |
1815 | Packet = AllocateZeroPool (DHCP6_BASE_PACKET_SIZE + UserLen);\r | |
1816 | if (Packet == NULL) {\r | |
1817 | return EFI_OUT_OF_RESOURCES;\r | |
1818 | }\r | |
1819 | \r | |
1820 | Packet->Size = DHCP6_BASE_PACKET_SIZE + UserLen;\r | |
1821 | Packet->Length = sizeof (EFI_DHCP6_HEADER);\r | |
1822 | Packet->Dhcp6.Header.MessageType = Dhcp6MsgInfoRequest;\r | |
1823 | Packet->Dhcp6.Header.TransactionId = Service->Xid++;\r | |
1824 | \r | |
1825 | InfCb->Xid = Packet->Dhcp6.Header.TransactionId;\r | |
1826 | \r | |
1827 | //\r | |
1828 | // Assembly Dhcp6 options for info-request message.\r | |
1829 | //\r | |
1830 | Cursor = Packet->Dhcp6.Option;\r | |
1831 | \r | |
1832 | if (SendClientId) {\r | |
1833 | Length = HTONS (ClientId->Length);\r | |
1834 | Cursor = Dhcp6AppendOption (\r | |
1835 | Cursor,\r | |
1836 | HTONS (Dhcp6OptClientId),\r | |
1837 | Length,\r | |
1838 | ClientId->Duid\r | |
1839 | );\r | |
1840 | }\r | |
1841 | \r | |
1842 | Cursor = Dhcp6AppendETOption (\r | |
1843 | Cursor,\r | |
1844 | Instance,\r | |
1845 | &Elapsed\r | |
1846 | );\r | |
1847 | \r | |
1848 | Cursor = Dhcp6AppendOption (\r | |
1849 | Cursor,\r | |
1850 | OptionRequest->OpCode,\r | |
1851 | OptionRequest->OpLen,\r | |
1852 | OptionRequest->Data\r | |
1853 | );\r | |
1854 | \r | |
1855 | //\r | |
1856 | // Append user-defined when configurate Dhcp6 service.\r | |
1857 | //\r | |
1858 | for (Index = 0; Index < OptionCount; Index++) {\r | |
1859 | \r | |
1860 | UserOpt = OptionList[Index];\r | |
1861 | Cursor = Dhcp6AppendOption(\r | |
1862 | Cursor,\r | |
1863 | UserOpt->OpCode,\r | |
1864 | UserOpt->OpLen,\r | |
1865 | UserOpt->Data\r | |
1866 | );\r | |
1867 | }\r | |
1868 | \r | |
1869 | //\r | |
1870 | // Determine the size/length of packet.\r | |
1871 | //\r | |
1872 | Packet->Length += (UINT32) (Cursor - Packet->Dhcp6.Option);\r | |
1873 | ASSERT (Packet->Size > Packet->Length + 8);\r | |
685e44a5 | 1874 | \r |
1875 | //\r | |
1876 | // Clear initial time for current transaction.\r | |
1877 | //\r | |
1878 | Instance->StartTime = 0;\r | |
a3bcde70 HT |
1879 | \r |
1880 | //\r | |
1881 | // Send info-request packet with no state.\r | |
1882 | //\r | |
1883 | Status = Dhcp6TransmitPacket (Instance, Packet, Elapsed);\r | |
1884 | \r | |
1885 | if (EFI_ERROR (Status)) {\r | |
1886 | FreePool (Packet);\r | |
1887 | return Status;\r | |
1888 | }\r | |
1889 | \r | |
1890 | //\r | |
1891 | // Enqueue the sent packet for the retransmission in case reply timeout.\r | |
1892 | //\r | |
1893 | return Dhcp6EnqueueRetry (Instance, Packet, Elapsed, Retransmission);\r | |
1894 | }\r | |
1895 | \r | |
1896 | \r | |
1897 | /**\r | |
1898 | Create the Confirm message and send it.\r | |
1899 | \r | |
1900 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1901 | \r | |
1902 | @retval EFI_SUCCESS Created and sent the confirm message successfully.\r | |
1903 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1904 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
1905 | @retval Others Failed to send the confirm message.\r | |
1906 | \r | |
1907 | **/\r | |
1908 | EFI_STATUS\r | |
1909 | Dhcp6SendConfirmMsg (\r | |
1910 | IN DHCP6_INSTANCE *Instance\r | |
1911 | )\r | |
1912 | {\r | |
1913 | UINT8 *Cursor;\r | |
1914 | UINTN Index;\r | |
1915 | UINT16 Length;\r | |
1916 | UINT32 UserLen;\r | |
1917 | EFI_STATUS Status;\r | |
1918 | DHCP6_SERVICE *Service;\r | |
1919 | EFI_DHCP6_DUID *ClientId;\r | |
1920 | EFI_DHCP6_PACKET *Packet;\r | |
1921 | EFI_DHCP6_PACKET_OPTION *UserOpt;\r | |
1922 | UINT16 *Elapsed;\r | |
1923 | \r | |
1924 | ASSERT (Instance->Config != NULL);\r | |
1925 | ASSERT (Instance->IaCb.Ia != NULL);\r | |
1926 | ASSERT (Instance->Service != NULL);\r | |
1927 | \r | |
1928 | Service = Instance->Service;\r | |
1929 | ClientId = Service->ClientId;\r | |
1930 | ASSERT (ClientId != NULL);\r | |
1931 | \r | |
1932 | //\r | |
1933 | // Calculate the added length of customized option list.\r | |
1934 | //\r | |
1935 | UserLen = 0;\r | |
1936 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
1937 | UserLen += (NTOHS (Instance->Config->OptionList[Index]->OpLen) + 4);\r | |
1938 | }\r | |
1939 | \r | |
1940 | //\r | |
1941 | // Create the Dhcp6 packet and initialize common fields.\r | |
1942 | //\r | |
1943 | Packet = AllocateZeroPool (DHCP6_BASE_PACKET_SIZE + UserLen);\r | |
1944 | if (Packet == NULL) {\r | |
1945 | return EFI_OUT_OF_RESOURCES;\r | |
1946 | }\r | |
1947 | \r | |
1948 | Packet->Size = DHCP6_BASE_PACKET_SIZE + UserLen;\r | |
1949 | Packet->Length = sizeof (EFI_DHCP6_HEADER);\r | |
1950 | Packet->Dhcp6.Header.MessageType = Dhcp6MsgConfirm;\r | |
1951 | Packet->Dhcp6.Header.TransactionId = Service->Xid++;\r | |
1952 | \r | |
1953 | //\r | |
1954 | // Assembly Dhcp6 options for solicit message.\r | |
1955 | //\r | |
1956 | Cursor = Packet->Dhcp6.Option;\r | |
1957 | \r | |
1958 | Length = HTONS (ClientId->Length);\r | |
1959 | Cursor = Dhcp6AppendOption (\r | |
1960 | Cursor,\r | |
1961 | HTONS (Dhcp6OptClientId),\r | |
1962 | Length,\r | |
1963 | ClientId->Duid\r | |
1964 | );\r | |
1965 | \r | |
1966 | Cursor = Dhcp6AppendETOption (\r | |
1967 | Cursor,\r | |
1968 | Instance,\r | |
1969 | &Elapsed\r | |
1970 | );\r | |
1971 | \r | |
1972 | Cursor = Dhcp6AppendIaOption (\r | |
1973 | Cursor,\r | |
1974 | Instance->IaCb.Ia,\r | |
1975 | Instance->IaCb.T1,\r | |
685e44a5 | 1976 | Instance->IaCb.T2,\r |
1977 | Packet->Dhcp6.Header.MessageType\r | |
a3bcde70 HT |
1978 | );\r |
1979 | \r | |
1980 | //\r | |
1981 | // Append user-defined when configurate Dhcp6 service.\r | |
1982 | //\r | |
1983 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
1984 | UserOpt = Instance->Config->OptionList[Index];\r | |
1985 | Cursor = Dhcp6AppendOption (\r | |
1986 | Cursor,\r | |
1987 | UserOpt->OpCode,\r | |
1988 | UserOpt->OpLen,\r | |
1989 | UserOpt->Data\r | |
1990 | );\r | |
1991 | }\r | |
1992 | \r | |
1993 | //\r | |
1994 | // Determine the size/length of packet.\r | |
1995 | //\r | |
1996 | Packet->Length += (UINT32) (Cursor - Packet->Dhcp6.Option);\r | |
1997 | ASSERT (Packet->Size > Packet->Length + 8);\r | |
1998 | \r | |
1999 | //\r | |
2000 | // Callback to user with the packet to be sent and check the user's feedback.\r | |
2001 | //\r | |
2002 | Status = Dhcp6CallbackUser (Instance, Dhcp6SendConfirm, &Packet);\r | |
2003 | \r | |
2004 | if (EFI_ERROR (Status)) {\r | |
2005 | FreePool (Packet);\r | |
2006 | return Status;\r | |
2007 | }\r | |
2008 | \r | |
2009 | //\r | |
2010 | // Send confirm packet with the state transition from Dhcp6Bound to\r | |
2011 | // Dhcp6Confirming.\r | |
2012 | //\r | |
2013 | Instance->IaCb.Ia->State = Dhcp6Confirming;\r | |
685e44a5 | 2014 | //\r |
2015 | // Clear initial time for current transaction.\r | |
2016 | //\r | |
2017 | Instance->StartTime = 0;\r | |
a3bcde70 HT |
2018 | \r |
2019 | Status = Dhcp6TransmitPacket (Instance, Packet, Elapsed);\r | |
2020 | \r | |
2021 | if (EFI_ERROR (Status)) {\r | |
2022 | FreePool (Packet);\r | |
2023 | return Status;\r | |
2024 | }\r | |
2025 | \r | |
2026 | //\r | |
2027 | // Enqueue the sent packet for the retransmission in case reply timeout.\r | |
2028 | //\r | |
2029 | return Dhcp6EnqueueRetry (Instance, Packet, Elapsed, NULL);\r | |
2030 | }\r | |
2031 | \r | |
2032 | \r | |
2033 | \r | |
2034 | /**\r | |
2035 | Handle with the Dhcp6 reply message.\r | |
2036 | \r | |
2037 | @param[in] Instance The pointer to Dhcp6 instance.\r | |
2038 | @param[in] Packet The pointer to the Dhcp6 reply message.\r | |
2039 | \r | |
2040 | @retval EFI_SUCCESS Processed the reply message successfully.\r | |
2041 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
2042 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
2043 | @retval Others Failed to process the reply message.\r | |
2044 | \r | |
2045 | **/\r | |
2046 | EFI_STATUS\r | |
2047 | Dhcp6HandleReplyMsg (\r | |
2048 | IN DHCP6_INSTANCE *Instance,\r | |
2049 | IN EFI_DHCP6_PACKET *Packet\r | |
2050 | )\r | |
2051 | {\r | |
2052 | EFI_STATUS Status;\r | |
2053 | UINT8 *Option;\r | |
2054 | UINT16 StsCode;\r | |
2055 | \r | |
2056 | ASSERT (Instance->Config != NULL);\r | |
2057 | ASSERT (Instance->IaCb.Ia != NULL);\r | |
2058 | ASSERT (Packet != NULL);\r | |
2059 | \r | |
685e44a5 | 2060 | Status = EFI_SUCCESS;\r |
2061 | \r | |
a3bcde70 HT |
2062 | if (Packet->Dhcp6.Header.MessageType != Dhcp6MsgReply) {\r |
2063 | return EFI_DEVICE_ERROR;\r | |
2064 | }\r | |
2065 | \r | |
2066 | //\r | |
2067 | // If the client subsequently receives a valid reply message that includes a\r | |
2068 | // rapid commit option since send a solicit with rapid commit option before,\r | |
2069 | // preocess the reply message and discard any reply messages received in\r | |
2070 | // response to the request message.\r | |
2071 | // See details in the section-17.1.4 of rfc-3315.\r | |
2072 | //\r | |
2073 | Option = Dhcp6SeekOption (\r | |
2074 | Packet->Dhcp6.Option,\r | |
2075 | Packet->Length - 4,\r | |
2076 | Dhcp6OptRapidCommit\r | |
2077 | );\r | |
2078 | \r | |
2079 | if ((Option != NULL && !Instance->Config->RapidCommit) || (Option == NULL && Instance->Config->RapidCommit)) {\r | |
2080 | return EFI_DEVICE_ERROR;\r | |
2081 | }\r | |
2082 | \r | |
2083 | //\r | |
2084 | // As to a valid reply packet in response to a request/renew/rebind packet,\r | |
2085 | // ignore the packet if not contains the Ia option\r | |
2086 | //\r | |
2087 | if (Instance->IaCb.Ia->State == Dhcp6Requesting ||\r | |
2088 | Instance->IaCb.Ia->State == Dhcp6Renewing ||\r | |
2089 | Instance->IaCb.Ia->State == Dhcp6Rebinding\r | |
2090 | ) {\r | |
2091 | \r | |
2092 | Option = Dhcp6SeekIaOption (\r | |
2093 | Packet->Dhcp6.Option,\r | |
2094 | Packet->Length,\r | |
2095 | &Instance->Config->IaDescriptor\r | |
2096 | );\r | |
2097 | if (Option == NULL) {\r | |
685e44a5 | 2098 | return EFI_SUCCESS;\r |
a3bcde70 HT |
2099 | }\r |
2100 | }\r | |
2101 | \r | |
2102 | //\r | |
2103 | // Callback to user with the received packet and check the user's feedback.\r | |
2104 | //\r | |
2105 | Status = Dhcp6CallbackUser (Instance, Dhcp6RcvdReply, &Packet);\r | |
2106 | \r | |
2107 | if (EFI_ERROR (Status)) {\r | |
2108 | return Status;\r | |
2109 | }\r | |
2110 | \r | |
a3bcde70 HT |
2111 | //\r |
2112 | // When receive a valid reply packet in response to a decline/release packet,\r | |
2113 | // the client considers the decline/release event completed regardless of the\r | |
2114 | // status code.\r | |
2115 | //\r | |
2116 | if (Instance->IaCb.Ia->State == Dhcp6Declining || Instance->IaCb.Ia->State == Dhcp6Releasing) {\r | |
2117 | \r | |
2118 | if (Instance->IaCb.Ia->IaAddressCount != 0) {\r | |
2119 | Instance->IaCb.Ia->State = Dhcp6Bound;\r | |
2120 | } else {\r | |
2121 | ASSERT (Instance->IaCb.Ia->ReplyPacket);\r | |
2122 | FreePool (Instance->IaCb.Ia->ReplyPacket);\r | |
2123 | Instance->IaCb.Ia->ReplyPacket = NULL;\r | |
2124 | Instance->IaCb.Ia->State = Dhcp6Init;\r | |
2125 | }\r | |
2126 | \r | |
2127 | //\r | |
2128 | // For sync, set the success flag out of polling in decline/release.\r | |
2129 | //\r | |
2130 | Instance->UdpSts = EFI_SUCCESS;\r | |
2131 | \r | |
2132 | //\r | |
2133 | // For async, signal the Ia event to inform Ia infomation update.\r | |
2134 | //\r | |
2135 | if (Instance->Config->IaInfoEvent != NULL) {\r | |
2136 | gBS->SignalEvent (Instance->Config->IaInfoEvent);\r | |
2137 | }\r | |
2138 | \r | |
2139 | //\r | |
2140 | // Reset start time for next exchange.\r | |
2141 | //\r | |
2142 | Instance->StartTime = 0;\r | |
2143 | \r | |
685e44a5 | 2144 | Status = EFI_SUCCESS;\r |
2145 | goto ON_EXIT;\r | |
a3bcde70 HT |
2146 | }\r |
2147 | \r | |
2148 | //\r | |
2149 | // Upon the receipt of a valid reply packet in response to a solicit, request,\r | |
2150 | // confirm, renew and rebind, the behavior depends on the status code option.\r | |
2151 | // See the details in the section-18.1.8 of rfc-3315.\r | |
2152 | //\r | |
2153 | Option = NULL;\r | |
2154 | Status = Dhcp6SeekStsOption (\r | |
2155 | Instance,\r | |
2156 | Packet,\r | |
2157 | &Option\r | |
2158 | );\r | |
2159 | \r | |
2160 | if (!EFI_ERROR (Status)) {\r | |
a3bcde70 HT |
2161 | //\r |
2162 | // No status code or no error status code means succeed to reply.\r | |
2163 | //\r | |
2164 | Status = Dhcp6UpdateIaInfo (Instance, Packet);\r | |
685e44a5 | 2165 | if (!EFI_ERROR (Status)) {\r |
2166 | //\r | |
2167 | // Reset start time for next exchange.\r | |
2168 | //\r | |
2169 | Instance->StartTime = 0;\r | |
a3bcde70 | 2170 | \r |
685e44a5 | 2171 | //\r |
2172 | // Set bound state and store the reply packet.\r | |
2173 | //\r | |
2174 | if (Instance->IaCb.Ia->ReplyPacket != NULL) {\r | |
2175 | FreePool (Instance->IaCb.Ia->ReplyPacket);\r | |
2176 | }\r | |
a3bcde70 | 2177 | \r |
685e44a5 | 2178 | Instance->IaCb.Ia->ReplyPacket = AllocateZeroPool (Packet->Size);\r |
a3bcde70 | 2179 | \r |
685e44a5 | 2180 | if (Instance->IaCb.Ia->ReplyPacket == NULL) {\r |
2181 | Status = EFI_OUT_OF_RESOURCES;\r | |
2182 | goto ON_EXIT;\r | |
2183 | }\r | |
a3bcde70 | 2184 | \r |
685e44a5 | 2185 | CopyMem (Instance->IaCb.Ia->ReplyPacket, Packet, Packet->Size);\r |
a3bcde70 | 2186 | \r |
685e44a5 | 2187 | Instance->IaCb.Ia->State = Dhcp6Bound;\r |
a3bcde70 | 2188 | \r |
685e44a5 | 2189 | //\r |
2190 | // For sync, set the success flag out of polling in start/renewrebind.\r | |
2191 | //\r | |
2192 | Instance->UdpSts = EFI_SUCCESS;\r | |
a3bcde70 | 2193 | \r |
685e44a5 | 2194 | //\r |
2195 | // Maybe this is a new round DHCP process due to some reason, such as NotOnLink\r | |
2196 | // ReplyMsg for ConfirmMsg should triger new round to acquire new address. In that\r | |
2197 | // case, clear old address.ValidLifetime and append to new address. Therefore, DHCP\r | |
2198 | // consumers can be notified to flush old address.\r | |
2199 | //\r | |
2200 | Dhcp6AppendCacheIa (Instance);\r | |
a3bcde70 | 2201 | \r |
685e44a5 | 2202 | //\r |
2203 | // For async, signal the Ia event to inform Ia infomation update.\r | |
2204 | //\r | |
2205 | if (Instance->Config->IaInfoEvent != NULL) {\r | |
2206 | gBS->SignalEvent (Instance->Config->IaInfoEvent);\r | |
2207 | }\r | |
2208 | } else if (Status == EFI_NOT_FOUND) {\r | |
2209 | //\r | |
2210 | // Refer to RFC3315 Chapter 18.1.8, for each IA in the original Renew or Rebind message, \r | |
2211 | // the client sends a Renew or Rebind if the IA is not in the Reply message.\r | |
2212 | // Return EFI_SUCCESS so we can continue to restart the Renew/Rebind process.\r | |
2213 | //\r | |
2214 | return EFI_SUCCESS;\r | |
a3bcde70 | 2215 | }\r |
685e44a5 | 2216 | \r |
2217 | goto ON_EXIT;\r | |
2218 | \r | |
a3bcde70 HT |
2219 | } else if (Option != NULL) {\r |
2220 | //\r | |
2221 | // Any error status code option is found.\r | |
2222 | //\r | |
2223 | StsCode = NTOHS (ReadUnaligned16 ((UINT16 *) (Option + 4)));\r | |
2224 | switch (StsCode) {\r | |
2225 | case Dhcp6StsUnspecFail:\r | |
2226 | //\r | |
2227 | // It indicates the server is unable to process the message due to an\r | |
2228 | // unspecified failure condition, so just retry if possible.\r | |
2229 | //\r | |
2230 | break;\r | |
2231 | \r | |
2232 | case Dhcp6StsUseMulticast:\r | |
2233 | //\r | |
2234 | // It indicates the server receives a message via unicast from a client\r | |
2235 | // to which the server has not sent a unicast option, so retry it by\r | |
2236 | // multi-cast address.\r | |
2237 | //\r | |
2238 | if (Instance->Unicast != NULL) {\r | |
2239 | FreePool (Instance->Unicast);\r | |
2240 | Instance->Unicast = NULL;\r | |
2241 | }\r | |
2242 | break;\r | |
2243 | \r | |
2244 | case Dhcp6StsNotOnLink:\r | |
2245 | if (Instance->IaCb.Ia->State == Dhcp6Confirming) {\r | |
2246 | //\r | |
2247 | // Before initiate new round DHCP, cache the current IA.\r | |
2248 | //\r | |
2249 | Status = Dhcp6CacheIa (Instance);\r | |
2250 | if (EFI_ERROR (Status)) {\r | |
2251 | return Status;\r | |
2252 | }\r | |
2253 | \r | |
2254 | //\r | |
2255 | // Restart S.A.R.R process to acquire new address.\r | |
2256 | //\r | |
2257 | Status = Dhcp6InitSolicitMsg (Instance);\r | |
2258 | if (EFI_ERROR (Status)) {\r | |
2259 | return Status;\r | |
2260 | }\r | |
2261 | }\r | |
2262 | break;\r | |
2263 | \r | |
685e44a5 | 2264 | case Dhcp6StsNoBinding:\r |
2265 | if (Instance->IaCb.Ia->State == Dhcp6Renewing || Instance->IaCb.Ia->State == Dhcp6Rebinding) {\r | |
2266 | //\r | |
2267 | // Refer to RFC3315 Chapter 18.1.8, for each IA in the original Renew or Rebind message, the client \r | |
2268 | // sends a Request message if the IA contained a Status Code option with the NoBinding status.\r | |
2269 | //\r | |
2270 | Status = Dhcp6SendRequestMsg(Instance);\r | |
2271 | if (EFI_ERROR (Status)) {\r | |
2272 | return Status;\r | |
2273 | }\r | |
2274 | }\r | |
2275 | break;\r | |
2276 | \r | |
a3bcde70 HT |
2277 | default:\r |
2278 | //\r | |
2279 | // The other status code, just restart solicitation.\r | |
2280 | //\r | |
2281 | break;\r | |
2282 | }\r | |
2283 | }\r | |
2284 | \r | |
2285 | return EFI_SUCCESS;\r | |
685e44a5 | 2286 | \r |
2287 | ON_EXIT:\r | |
2288 | \r | |
2289 | if (!EFI_ERROR(Status)) {\r | |
2290 | Status = Dhcp6DequeueRetry (\r | |
2291 | Instance,\r | |
2292 | Packet->Dhcp6.Header.TransactionId,\r | |
2293 | FALSE\r | |
2294 | );\r | |
2295 | }\r | |
2296 | \r | |
2297 | return Status;\r | |
a3bcde70 HT |
2298 | }\r |
2299 | \r | |
2300 | \r | |
2301 | /**\r | |
2302 | Select the appointed Dhcp6 advertisement message.\r | |
2303 | \r | |
2304 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
2305 | @param[in] AdSelect The pointer to the selected Dhcp6 advertisement message.\r | |
2306 | \r | |
2307 | @retval EFI_SUCCESS Selected the right advertisement message successfully.\r | |
2308 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
2309 | @retval Others Failed to select the advertise message.\r | |
2310 | \r | |
2311 | **/\r | |
2312 | EFI_STATUS\r | |
2313 | Dhcp6SelectAdvertiseMsg (\r | |
2314 | IN DHCP6_INSTANCE *Instance,\r | |
2315 | IN EFI_DHCP6_PACKET *AdSelect\r | |
2316 | )\r | |
2317 | {\r | |
2318 | EFI_STATUS Status;\r | |
2319 | UINT8 *Option;\r | |
2320 | \r | |
2321 | ASSERT (AdSelect != NULL);\r | |
2322 | \r | |
2323 | //\r | |
2324 | // Callback to user with the selected advertisement packet, and the user\r | |
2325 | // might overwrite it.\r | |
2326 | //\r | |
2327 | Status = Dhcp6CallbackUser (Instance, Dhcp6SelectAdvertise, &AdSelect);\r | |
2328 | \r | |
2329 | if (EFI_ERROR (Status)) {\r | |
2330 | return Status;\r | |
2331 | }\r | |
2332 | \r | |
2333 | Instance->AdSelect = AdSelect;\r | |
2334 | \r | |
2335 | //\r | |
2336 | // Dequeue the sent packet for the retransmission since advertisement selected.\r | |
2337 | //\r | |
2338 | Status = Dhcp6DequeueRetry (\r | |
2339 | Instance,\r | |
2340 | AdSelect->Dhcp6.Header.TransactionId,\r | |
2341 | FALSE\r | |
2342 | );\r | |
2343 | \r | |
2344 | if (EFI_ERROR(Status)) {\r | |
2345 | return Status;\r | |
2346 | }\r | |
2347 | \r | |
2348 | //\r | |
2349 | // Check whether there is server unicast option in the selected advertise\r | |
2350 | // packet, and update it.\r | |
2351 | //\r | |
2352 | Option = Dhcp6SeekOption(\r | |
2353 | AdSelect->Dhcp6.Option,\r | |
2354 | AdSelect->Length - 4,\r | |
2355 | Dhcp6OptServerUnicast\r | |
2356 | );\r | |
2357 | \r | |
2358 | if (Option != NULL) {\r | |
2359 | \r | |
2360 | Instance->Unicast = AllocateZeroPool (sizeof(EFI_IPv6_ADDRESS));\r | |
2361 | \r | |
2362 | if (Instance->Unicast == NULL) {\r | |
2363 | return EFI_OUT_OF_RESOURCES;\r | |
2364 | }\r | |
2365 | \r | |
2366 | CopyMem (Instance->Unicast, Option + 4, sizeof(EFI_IPv6_ADDRESS));\r | |
2367 | }\r | |
2368 | \r | |
2369 | //\r | |
2370 | // Update the information of the Ia by the selected advertisement message.\r | |
2371 | //\r | |
2372 | Status = Dhcp6UpdateIaInfo (Instance, AdSelect);\r | |
2373 | \r | |
2374 | if (EFI_ERROR (Status)) {\r | |
2375 | return Status;\r | |
2376 | }\r | |
2377 | \r | |
2378 | //\r | |
2379 | // Send the request message to continue the S.A.R.R. process.\r | |
2380 | //\r | |
2381 | return Dhcp6SendRequestMsg (Instance);\r | |
2382 | }\r | |
2383 | \r | |
2384 | \r | |
2385 | /**\r | |
2386 | Handle with the Dhcp6 advertisement message.\r | |
2387 | \r | |
2388 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
2389 | @param[in] Packet The pointer to the Dhcp6 advertisement message.\r | |
2390 | \r | |
2391 | @retval EFI_SUCCESS Processed the advertisement message successfully.\r | |
2392 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
2393 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
2394 | @retval Others Failed to process the advertise message.\r | |
2395 | \r | |
2396 | **/\r | |
2397 | EFI_STATUS\r | |
2398 | Dhcp6HandleAdvertiseMsg (\r | |
2399 | IN DHCP6_INSTANCE *Instance,\r | |
2400 | IN EFI_DHCP6_PACKET *Packet\r | |
2401 | )\r | |
2402 | {\r | |
2403 | EFI_STATUS Status;\r | |
2404 | UINT8 *Option;\r | |
2405 | UINT16 StsCode;\r | |
2406 | BOOLEAN Timeout;\r | |
2407 | \r | |
2408 | ASSERT(Instance->Config);\r | |
2409 | ASSERT(Instance->IaCb.Ia);\r | |
2410 | \r | |
2411 | Timeout = FALSE;\r | |
2412 | StsCode = Dhcp6StsSuccess;\r | |
2413 | \r | |
2414 | //\r | |
2415 | // If the client does receives a valid reply message that includes a rapid\r | |
2416 | // commit option since a solicit with rapid commit optioin sent before, select\r | |
2417 | // this reply message. Or else, process the advertise messages as normal.\r | |
2418 | // See details in the section-17.1.4 of rfc-3315.\r | |
2419 | //\r | |
2420 | Option = Dhcp6SeekOption(\r | |
2421 | Packet->Dhcp6.Option,\r | |
2422 | Packet->Length - 4,\r | |
2423 | Dhcp6OptRapidCommit\r | |
2424 | );\r | |
2425 | \r | |
2426 | if (Option != NULL && Instance->Config->RapidCommit && Packet->Dhcp6.Header.MessageType == Dhcp6MsgReply) {\r | |
2427 | \r | |
2428 | return Dhcp6HandleReplyMsg (Instance, Packet);\r | |
2429 | }\r | |
2430 | \r | |
2431 | if (Packet->Dhcp6.Header.MessageType != Dhcp6MsgAdvertise) {\r | |
2432 | return EFI_DEVICE_ERROR;\r | |
2433 | }\r | |
2434 | \r | |
2435 | //\r | |
2436 | // Client must ignore any advertise message that includes a status code option\r | |
2437 | // containing the value noaddrsavail, with the exception that the client may\r | |
2438 | // display the associated status message to the user.\r | |
2439 | // See the details in the section-17.1.3 of rfc-3315.\r | |
2440 | //\r | |
685e44a5 | 2441 | Status = Dhcp6SeekStsOption (\r |
2442 | Instance,\r | |
2443 | Packet,\r | |
2444 | &Option\r | |
a3bcde70 | 2445 | );\r |
685e44a5 | 2446 | if (EFI_ERROR (Status)) {\r |
2447 | return EFI_DEVICE_ERROR;\r | |
a3bcde70 HT |
2448 | }\r |
2449 | \r | |
2450 | //\r | |
2451 | // Callback to user with the received packet and check the user's feedback.\r | |
2452 | //\r | |
2453 | Status = Dhcp6CallbackUser (Instance, Dhcp6RcvdAdvertise, &Packet);\r | |
2454 | \r | |
2455 | if (!EFI_ERROR (Status)) {\r | |
2456 | //\r | |
2457 | // Success means user choose the current advertisement packet.\r | |
2458 | //\r | |
2459 | if (Instance->AdSelect != NULL) {\r | |
2460 | FreePool (Instance->AdSelect);\r | |
2461 | }\r | |
2462 | \r | |
2463 | //\r | |
2464 | // Store the selected advertisement packet and set a flag.\r | |
2465 | //\r | |
2466 | Instance->AdSelect = AllocateZeroPool (Packet->Size);\r | |
2467 | \r | |
2468 | if (Instance->AdSelect == NULL) {\r | |
2469 | return EFI_OUT_OF_RESOURCES;\r | |
2470 | }\r | |
2471 | \r | |
2472 | CopyMem (Instance->AdSelect, Packet, Packet->Size);\r | |
2473 | \r | |
2474 | Instance->AdPref = 0xff;\r | |
2475 | \r | |
2476 | } else if (Status == EFI_NOT_READY) {\r | |
2477 | //\r | |
2478 | // Not_ready means user wants to continue to receive more advertise packets.\r | |
2479 | //\r | |
2480 | if (Instance->AdPref == 0xff && Instance->AdSelect == NULL) {\r | |
2481 | //\r | |
2482 | // It's a tricky point. The timer routine set adpref as 0xff if the first\r | |
2483 | // rt timeout and no advertisement received, which means any advertisement\r | |
2484 | // received will be selected after the first rt.\r | |
2485 | //\r | |
2486 | Timeout = TRUE;\r | |
2487 | }\r | |
2488 | \r | |
2489 | //\r | |
2490 | // Check whether the current packet has a 255 preference option or not.\r | |
2491 | // Take non-preference option as 0 value.\r | |
2492 | //\r | |
2493 | Option = Dhcp6SeekOption(\r | |
2494 | Packet->Dhcp6.Option,\r | |
2495 | Packet->Length - 4,\r | |
2496 | Dhcp6OptPreference\r | |
2497 | );\r | |
2498 | \r | |
2499 | if (Instance->AdSelect == NULL || (Option != NULL && *(Option + 4) > Instance->AdPref)) {\r | |
2500 | //\r | |
2501 | // No advertisements received before or preference is more than other\r | |
2502 | // advertisements received before. Then store the new packet and the\r | |
2503 | // preference value.\r | |
2504 | //\r | |
2505 | if (Instance->AdSelect != NULL) {\r | |
2506 | FreePool (Instance->AdSelect);\r | |
2507 | }\r | |
2508 | \r | |
2509 | Instance->AdSelect = AllocateZeroPool (Packet->Size);\r | |
2510 | \r | |
2511 | if (Instance->AdSelect == NULL) {\r | |
2512 | return EFI_OUT_OF_RESOURCES;\r | |
2513 | }\r | |
2514 | \r | |
2515 | CopyMem (Instance->AdSelect, Packet, Packet->Size);\r | |
2516 | \r | |
2517 | if (Option != NULL) {\r | |
2518 | Instance->AdPref = *(Option + 4);\r | |
2519 | }\r | |
2520 | } else {\r | |
2521 | //\r | |
2522 | // Non-preference and other advertisements received before or current\r | |
2523 | // preference is less than other advertisements received before.\r | |
2524 | // Leave the packet alone.\r | |
2525 | }\r | |
2526 | \r | |
2527 | } else {\r | |
2528 | //\r | |
2529 | // Other error status means termination.\r | |
2530 | //\r | |
2531 | return Status;\r | |
2532 | }\r | |
2533 | \r | |
2534 | //\r | |
2535 | // Client must collect advertise messages as more as possible until the first\r | |
2536 | // RT has elapsed, or get a highest preference 255 advertise.\r | |
2537 | // See details in the section-17.1.2 of rfc-3315.\r | |
2538 | //\r | |
2539 | if (Instance->AdPref == 0xff || Timeout) {\r | |
2540 | Status = Dhcp6SelectAdvertiseMsg (Instance, Instance->AdSelect);\r | |
2541 | }\r | |
2542 | \r | |
2543 | return Status;\r | |
2544 | }\r | |
2545 | \r | |
2546 | \r | |
2547 | /**\r | |
2548 | The Dhcp6 stateful exchange process routine.\r | |
2549 | \r | |
2550 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
2551 | @param[in] Packet The pointer to the received Dhcp6 message.\r | |
2552 | \r | |
2553 | **/\r | |
2554 | VOID\r | |
2555 | Dhcp6HandleStateful (\r | |
2556 | IN DHCP6_INSTANCE *Instance,\r | |
2557 | IN EFI_DHCP6_PACKET *Packet\r | |
2558 | )\r | |
2559 | {\r | |
2560 | EFI_STATUS Status;\r | |
2561 | EFI_DHCP6_DUID *ClientId;\r | |
2562 | DHCP6_SERVICE *Service;\r | |
2563 | UINT8 *Option;\r | |
2564 | \r | |
2565 | Service = Instance->Service;\r | |
2566 | ClientId = Service->ClientId;\r | |
2567 | Status = EFI_SUCCESS;\r | |
2568 | \r | |
216f7970 | 2569 | if (Instance->Config == NULL) {\r |
a3bcde70 HT |
2570 | goto ON_CONTINUE;\r |
2571 | }\r | |
2572 | \r | |
2573 | ASSERT (ClientId);\r | |
2574 | ASSERT (Instance->Config);\r | |
2575 | ASSERT (Instance->IaCb.Ia);\r | |
2576 | \r | |
2577 | //\r | |
2578 | // Discard the packet if not advertisement or reply packet.\r | |
2579 | //\r | |
2580 | if (Packet->Dhcp6.Header.MessageType != Dhcp6MsgAdvertise && Packet->Dhcp6.Header.MessageType != Dhcp6MsgReply) {\r | |
2581 | goto ON_CONTINUE;\r | |
2582 | }\r | |
2583 | \r | |
2584 | //\r | |
2585 | // Check whether include client Id or not.\r | |
2586 | //\r | |
2587 | Option = Dhcp6SeekOption(\r | |
2588 | Packet->Dhcp6.Option,\r | |
2589 | Packet->Length - 4,\r | |
2590 | Dhcp6OptClientId\r | |
2591 | );\r | |
2592 | \r | |
2593 | if (Option == NULL || CompareMem (Option + 4, ClientId->Duid, ClientId->Length) != 0) {\r | |
2594 | goto ON_CONTINUE;\r | |
2595 | }\r | |
2596 | \r | |
2597 | //\r | |
2598 | // Check whether include server Id or not.\r | |
2599 | //\r | |
2600 | Option = Dhcp6SeekOption(\r | |
2601 | Packet->Dhcp6.Option,\r | |
2602 | Packet->Length - 4,\r | |
2603 | Dhcp6OptServerId\r | |
2604 | );\r | |
2605 | \r | |
2606 | if (Option == NULL) {\r | |
2607 | goto ON_CONTINUE;\r | |
2608 | }\r | |
2609 | \r | |
2610 | switch (Instance->IaCb.Ia->State) {\r | |
2611 | case Dhcp6Selecting:\r | |
2612 | //\r | |
2613 | // Handle the advertisement message when in the Dhcp6Selecting state.\r | |
2614 | // Do not need check return status, if failed, just continue to the next.\r | |
2615 | //\r | |
2616 | Dhcp6HandleAdvertiseMsg (Instance, Packet);\r | |
2617 | break;\r | |
2618 | \r | |
2619 | case Dhcp6Requesting:\r | |
2620 | case Dhcp6Confirming:\r | |
2621 | case Dhcp6Renewing:\r | |
2622 | case Dhcp6Rebinding:\r | |
2623 | case Dhcp6Releasing:\r | |
2624 | case Dhcp6Declining:\r | |
2625 | //\r | |
2626 | // Handle the reply message when in the Dhcp6Requesting, Dhcp6Renewing\r | |
2627 | // Dhcp6Rebinding, Dhcp6Releasing and Dhcp6Declining state.\r | |
2628 | // If failed here, it should reset the current session.\r | |
2629 | //\r | |
2630 | Status = Dhcp6HandleReplyMsg (Instance, Packet);\r | |
2631 | if (EFI_ERROR (Status)) {\r | |
2632 | goto ON_EXIT;\r | |
2633 | }\r | |
2634 | break;\r | |
2635 | default:\r | |
2636 | //\r | |
2637 | // Other state has not supported yet.\r | |
2638 | //\r | |
2639 | break;\r | |
2640 | }\r | |
2641 | \r | |
2642 | ON_CONTINUE:\r | |
2643 | //\r | |
2644 | // Continue to receive the following Dhcp6 message.\r | |
2645 | //\r | |
2646 | Status = UdpIoRecvDatagram (\r | |
2647 | Service->UdpIo,\r | |
2648 | Dhcp6ReceivePacket,\r | |
2649 | Service,\r | |
2650 | 0\r | |
2651 | );\r | |
2652 | ON_EXIT:\r | |
2653 | if (EFI_ERROR (Status)) {\r | |
2654 | Dhcp6CleanupSession (Instance, Status);\r | |
2655 | }\r | |
2656 | }\r | |
2657 | \r | |
2658 | \r | |
2659 | /**\r | |
2660 | The Dhcp6 stateless exchange process routine.\r | |
2661 | \r | |
2662 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
2663 | @param[in] Packet The pointer to the received Dhcp6 message.\r | |
2664 | \r | |
2665 | **/\r | |
2666 | VOID\r | |
2667 | Dhcp6HandleStateless (\r | |
2668 | IN DHCP6_INSTANCE *Instance,\r | |
2669 | IN EFI_DHCP6_PACKET *Packet\r | |
2670 | )\r | |
2671 | {\r | |
2672 | EFI_STATUS Status;\r | |
2673 | DHCP6_SERVICE *Service;\r | |
2674 | DHCP6_INF_CB *InfCb;\r | |
2675 | UINT8 *Option;\r | |
2676 | BOOLEAN IsMatched;\r | |
2677 | \r | |
2678 | Service = Instance->Service;\r | |
2679 | Status = EFI_SUCCESS;\r | |
2680 | IsMatched = FALSE;\r | |
2681 | InfCb = NULL;\r | |
2682 | \r | |
a3bcde70 HT |
2683 | if (Packet->Dhcp6.Header.MessageType != Dhcp6MsgReply) {\r |
2684 | goto ON_EXIT;\r | |
2685 | }\r | |
2686 | \r | |
2687 | //\r | |
2688 | // Check whether it's a desired Info-request message by Xid.\r | |
2689 | //\r | |
2690 | while (!IsListEmpty (&Instance->InfList)) {\r | |
2691 | InfCb = NET_LIST_HEAD (&Instance->InfList, DHCP6_INF_CB, Link);\r | |
2692 | if (InfCb->Xid == Packet->Dhcp6.Header.TransactionId) {\r | |
2693 | IsMatched = TRUE;\r | |
2694 | break;\r | |
2695 | }\r | |
2696 | }\r | |
2697 | \r | |
2698 | if (!IsMatched) {\r | |
2699 | goto ON_EXIT;\r | |
2700 | }\r | |
2701 | \r | |
2702 | //\r | |
2703 | // Check whether include server Id or not.\r | |
2704 | //\r | |
2705 | Option = Dhcp6SeekOption (\r | |
2706 | Packet->Dhcp6.Option,\r | |
2707 | Packet->Length - 4,\r | |
2708 | Dhcp6OptServerId\r | |
2709 | );\r | |
2710 | \r | |
2711 | if (Option == NULL) {\r | |
2712 | goto ON_EXIT;\r | |
2713 | }\r | |
2714 | \r | |
2715 | //\r | |
2716 | // Callback to user with the received packet and check the user's feedback.\r | |
2717 | //\r | |
2718 | Status = InfCb->ReplyCallback (\r | |
2719 | &Instance->Dhcp6,\r | |
2720 | InfCb->CallbackContext,\r | |
2721 | Packet\r | |
2722 | );\r | |
2723 | \r | |
2724 | if (Status == EFI_NOT_READY) {\r | |
2725 | //\r | |
2726 | // Success or aborted will both stop this info-request exchange process,\r | |
2727 | // but not ready means user wants to continue to receive reply.\r | |
2728 | //\r | |
2729 | goto ON_EXIT;\r | |
2730 | }\r | |
2731 | \r | |
2732 | //\r | |
2733 | // Dequeue the sent packet from the txlist if the xid matched, and ignore\r | |
2734 | // if no xid matched.\r | |
2735 | //\r | |
2736 | Dhcp6DequeueRetry (\r | |
2737 | Instance,\r | |
2738 | Packet->Dhcp6.Header.TransactionId,\r | |
2739 | FALSE\r | |
2740 | );\r | |
2741 | \r | |
2742 | //\r | |
2743 | // For sync, set the status out of polling for info-request.\r | |
2744 | //\r | |
2745 | Instance->UdpSts = Status;\r | |
2746 | \r | |
2747 | ON_EXIT:\r | |
2748 | \r | |
2749 | Status = UdpIoRecvDatagram (\r | |
2750 | Service->UdpIo,\r | |
2751 | Dhcp6ReceivePacket,\r | |
2752 | Service,\r | |
2753 | 0\r | |
2754 | );\r | |
2755 | \r | |
2756 | if (EFI_ERROR (Status)) {\r | |
2757 | Dhcp6CleanupRetry (Instance, DHCP6_PACKET_STATELESS);\r | |
2758 | }\r | |
2759 | }\r | |
2760 | \r | |
2761 | \r | |
2762 | /**\r | |
2763 | The receive callback function for Dhcp6 exchange process.\r | |
2764 | \r | |
2765 | @param[in] Udp6Wrap The pointer to the received net buffer.\r | |
2766 | @param[in] EndPoint The pointer to the udp end point.\r | |
2767 | @param[in] IoStatus The return status from udp io.\r | |
2768 | @param[in] Context The opaque parameter to the function.\r | |
2769 | \r | |
2770 | **/\r | |
2771 | VOID\r | |
2772 | EFIAPI\r | |
2773 | Dhcp6ReceivePacket (\r | |
2774 | IN NET_BUF *Udp6Wrap,\r | |
2775 | IN UDP_END_POINT *EndPoint,\r | |
2776 | IN EFI_STATUS IoStatus,\r | |
2777 | IN VOID *Context\r | |
2778 | )\r | |
2779 | {\r | |
2780 | EFI_DHCP6_HEADER *Head;\r | |
2781 | EFI_DHCP6_PACKET *Packet;\r | |
2782 | DHCP6_SERVICE *Service;\r | |
2783 | DHCP6_INSTANCE *Instance;\r | |
2784 | DHCP6_TX_CB *TxCb;\r | |
2785 | UINT32 Size;\r | |
2786 | BOOLEAN IsDispatched;\r | |
2787 | BOOLEAN IsStateless;\r | |
2788 | LIST_ENTRY *Entry1;\r | |
2789 | LIST_ENTRY *Next1;\r | |
2790 | LIST_ENTRY *Entry2;\r | |
2791 | LIST_ENTRY *Next2;\r | |
2792 | \r | |
2793 | ASSERT (Udp6Wrap != NULL);\r | |
2794 | ASSERT (Context != NULL);\r | |
2795 | \r | |
2796 | Service = (DHCP6_SERVICE *) Context;\r | |
2797 | Instance = NULL;\r | |
2798 | Packet = NULL;\r | |
2799 | IsDispatched = FALSE;\r | |
2800 | IsStateless = FALSE;\r | |
2801 | \r | |
2802 | if (EFI_ERROR (IoStatus)) {\r | |
2803 | return ;\r | |
2804 | }\r | |
2805 | \r | |
2806 | //\r | |
2807 | // Copy the net buffer received from upd6 to a Dhcp6 packet.\r | |
2808 | //\r | |
2809 | Size = sizeof (EFI_DHCP6_PACKET) + Udp6Wrap->TotalSize;\r | |
2810 | Packet = (EFI_DHCP6_PACKET *) AllocateZeroPool (Size);\r | |
2811 | \r | |
2812 | if (Packet == NULL) {\r | |
2813 | goto ON_CONTINUE;\r | |
2814 | }\r | |
2815 | \r | |
2816 | Packet->Size = Size;\r | |
2817 | Head = &Packet->Dhcp6.Header;\r | |
2818 | Packet->Length = NetbufCopy (Udp6Wrap, 0, Udp6Wrap->TotalSize, (UINT8 *) Head);\r | |
2819 | \r | |
2820 | if (Packet->Length == 0) {\r | |
2821 | goto ON_CONTINUE;\r | |
2822 | }\r | |
2823 | \r | |
2824 | //\r | |
2825 | // Dispatch packet to right instance by transaction id.\r | |
2826 | //\r | |
2827 | NET_LIST_FOR_EACH_SAFE (Entry1, Next1, &Service->Child) {\r | |
2828 | \r | |
2829 | Instance = NET_LIST_USER_STRUCT (Entry1, DHCP6_INSTANCE, Link);\r | |
2830 | \r | |
2831 | NET_LIST_FOR_EACH_SAFE (Entry2, Next2, &Instance->TxList) {\r | |
2832 | \r | |
2833 | TxCb = NET_LIST_USER_STRUCT (Entry2, DHCP6_TX_CB, Link);\r | |
2834 | \r | |
2835 | if (Packet->Dhcp6.Header.TransactionId == TxCb->Xid) {\r | |
2836 | //\r | |
2837 | // Find the corresponding packet in tx list, and check it whether belongs\r | |
2838 | // to stateful exchange process.\r | |
2839 | //\r | |
2840 | if (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgInfoRequest) {\r | |
2841 | IsStateless = TRUE;\r | |
2842 | }\r | |
2843 | IsDispatched = TRUE;\r | |
2844 | break;\r | |
2845 | }\r | |
2846 | }\r | |
2847 | \r | |
2848 | if (IsDispatched) {\r | |
2849 | break;\r | |
2850 | }\r | |
2851 | }\r | |
2852 | \r | |
2853 | //\r | |
2854 | // Skip this packet if not dispatched to any instance.\r | |
2855 | //\r | |
2856 | if (!IsDispatched) {\r | |
2857 | goto ON_CONTINUE;\r | |
2858 | }\r | |
2859 | \r | |
2860 | //\r | |
2861 | // Dispatch the received packet ot the right instance.\r | |
2862 | //\r | |
2863 | if (IsStateless) {\r | |
2864 | Dhcp6HandleStateless (Instance, Packet);\r | |
2865 | } else {\r | |
2866 | Dhcp6HandleStateful (Instance, Packet);\r | |
2867 | }\r | |
2868 | \r | |
2869 | ON_CONTINUE:\r | |
2870 | \r | |
2871 | NetbufFree (Udp6Wrap);\r | |
2872 | \r | |
2873 | if (Packet != NULL) {\r | |
2874 | FreePool (Packet);\r | |
2875 | }\r | |
2876 | }\r | |
2877 | \r | |
2878 | /**\r | |
2879 | Detect Link movement for specified network device.\r | |
2880 | \r | |
2881 | This routine will try to invoke Snp->GetStatus() to get the media status.\r | |
2882 | If media present status switches from unpresent to present, a link movement\r | |
2883 | is detected. Note that the underlying UNDI driver may not support reporting\r | |
2884 | media status from GET_STATUS command. If that, fail to detect link movement.\r | |
2885 | \r | |
2886 | @param[in] Instance The pointer to DHCP6_INSTANCE.\r | |
2887 | \r | |
2888 | @retval TRUE A link movement is detected.\r | |
2889 | @retval FALSE A link movement is not detected.\r | |
2890 | \r | |
2891 | **/\r | |
2892 | BOOLEAN\r | |
2893 | Dhcp6LinkMovDetect (\r | |
2894 | IN DHCP6_INSTANCE *Instance\r | |
2895 | )\r | |
2896 | {\r | |
2897 | UINT32 InterruptStatus;\r | |
2898 | BOOLEAN MediaPresent;\r | |
2899 | EFI_STATUS Status;\r | |
2900 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
2901 | \r | |
2902 | ASSERT (Instance != NULL);\r | |
2903 | Snp = Instance->Service->Snp;\r | |
2904 | MediaPresent = Instance->MediaPresent;\r | |
2905 | \r | |
2906 | //\r | |
2907 | // Check whether SNP support media detection\r | |
2908 | //\r | |
2909 | if (!Snp->Mode->MediaPresentSupported) {\r | |
2910 | return FALSE;\r | |
2911 | }\r | |
2912 | \r | |
2913 | //\r | |
2914 | // Invoke Snp->GetStatus() to refresh MediaPresent field in SNP mode data\r | |
2915 | //\r | |
2916 | Status = Snp->GetStatus (Snp, &InterruptStatus, NULL);\r | |
2917 | if (EFI_ERROR (Status)) {\r | |
2918 | return FALSE;\r | |
2919 | }\r | |
2920 | \r | |
2921 | Instance->MediaPresent = Snp->Mode->MediaPresent;\r | |
2922 | //\r | |
2923 | // Media transimit Unpresent to Present means new link movement is detected.\r | |
2924 | //\r | |
2925 | if (!MediaPresent && Instance->MediaPresent) {\r | |
2926 | return TRUE;\r | |
2927 | }\r | |
2928 | return FALSE;\r | |
2929 | }\r | |
2930 | \r | |
2931 | \r | |
2932 | /**\r | |
2933 | The timer routine of the Dhcp6 instance for each second.\r | |
2934 | \r | |
2935 | @param[in] Event The timer event.\r | |
2936 | @param[in] Context The opaque parameter to the function.\r | |
2937 | \r | |
2938 | **/\r | |
2939 | VOID\r | |
2940 | EFIAPI\r | |
2941 | Dhcp6OnTimerTick (\r | |
2942 | IN EFI_EVENT Event,\r | |
2943 | IN VOID *Context\r | |
2944 | )\r | |
2945 | {\r | |
2946 | LIST_ENTRY *Entry;\r | |
2947 | LIST_ENTRY *NextEntry;\r | |
2948 | DHCP6_INSTANCE *Instance;\r | |
2949 | DHCP6_TX_CB *TxCb;\r | |
2950 | DHCP6_IA_CB *IaCb;\r | |
2951 | UINT32 LossTime;\r | |
42737ed9 | 2952 | EFI_STATUS Status;\r |
a3bcde70 HT |
2953 | \r |
2954 | ASSERT (Context != NULL);\r | |
2955 | \r | |
2956 | Instance = (DHCP6_INSTANCE *) Context;\r | |
2957 | \r | |
2958 | //\r | |
2959 | // 1. Loop the tx list, count live time of every tx packet to check whether\r | |
2960 | // need re-transmit or not.\r | |
2961 | //\r | |
2962 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, &Instance->TxList) {\r | |
2963 | \r | |
2964 | TxCb = NET_LIST_USER_STRUCT (Entry, DHCP6_TX_CB, Link);\r | |
2965 | \r | |
2966 | TxCb->TickTime++;\r | |
2967 | \r | |
2968 | if (TxCb->TickTime > TxCb->RetryExp) {\r | |
2969 | //\r | |
2970 | // Handle the first rt in the transmission of solicit specially.\r | |
2971 | //\r | |
129b8b09 | 2972 | if ((TxCb->RetryCnt == 0 || TxCb->SolicitRetry) && TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgSolicit) {\r |
a3bcde70 HT |
2973 | if (Instance->AdSelect == NULL) {\r |
2974 | //\r | |
2975 | // Set adpref as 0xff here to indicate select any advertisement\r | |
2976 | // afterwards.\r | |
2977 | //\r | |
2978 | Instance->AdPref = 0xff;\r | |
2979 | } else {\r | |
2980 | //\r | |
2981 | // Select the advertisement received before.\r | |
2982 | //\r | |
42737ed9 | 2983 | Status = Dhcp6SelectAdvertiseMsg (Instance, Instance->AdSelect);\r |
b9f256bb | 2984 | if (Status == EFI_ABORTED) {\r |
2985 | goto ON_CLOSE;\r | |
2986 | } else if (EFI_ERROR (Status)) {\r | |
42737ed9 | 2987 | TxCb->RetryCnt++;\r |
2988 | }\r | |
a3bcde70 HT |
2989 | return;\r |
2990 | }\r | |
2991 | }\r | |
2992 | //\r | |
2993 | // Increase the retry count for the packet and add up the total loss time.\r | |
2994 | //\r | |
2995 | TxCb->RetryCnt++;\r | |
2996 | TxCb->RetryLos += TxCb->RetryExp;\r | |
2997 | \r | |
2998 | //\r | |
2999 | // Check whether overflow the max retry count limit for this packet\r | |
3000 | //\r | |
3001 | if (TxCb->RetryCtl.Mrc != 0 && TxCb->RetryCtl.Mrc < TxCb->RetryCnt) {\r | |
b9f256bb | 3002 | Status = EFI_NO_RESPONSE;\r |
a3bcde70 HT |
3003 | goto ON_CLOSE;\r |
3004 | }\r | |
3005 | \r | |
3006 | //\r | |
3007 | // Check whether overflow the max retry duration for this packet\r | |
3008 | //\r | |
3009 | if (TxCb->RetryCtl.Mrd != 0 && TxCb->RetryCtl.Mrd <= TxCb->RetryLos) {\r | |
b9f256bb | 3010 | Status = EFI_NO_RESPONSE;\r |
a3bcde70 HT |
3011 | goto ON_CLOSE;\r |
3012 | }\r | |
3013 | \r | |
3014 | //\r | |
3015 | // Re-calculate retry expire timeout for the next time.\r | |
3016 | //\r | |
3017 | // Firstly, Check the new calculated time whether overflow the max retry\r | |
3018 | // expire time.\r | |
3019 | //\r | |
3020 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
3021 | TxCb->RetryExp,\r | |
3022 | FALSE,\r | |
3023 | TRUE\r | |
3024 | );\r | |
3025 | \r | |
3026 | if (TxCb->RetryCtl.Mrt != 0 && TxCb->RetryCtl.Mrt < TxCb->RetryExp) {\r | |
3027 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
3028 | TxCb->RetryCtl.Mrt,\r | |
3029 | TRUE,\r | |
3030 | TRUE\r | |
3031 | );\r | |
3032 | }\r | |
3033 | \r | |
3034 | //\r | |
3035 | // Secondly, Check the new calculated time whether overflow the max retry\r | |
3036 | // duration time.\r | |
3037 | //\r | |
3038 | LossTime = TxCb->RetryLos + TxCb->RetryExp;\r | |
3039 | if (TxCb->RetryCtl.Mrd != 0 && TxCb->RetryCtl.Mrd < LossTime) {\r | |
3040 | TxCb->RetryExp = TxCb->RetryCtl.Mrd - TxCb->RetryLos;\r | |
3041 | }\r | |
3042 | \r | |
3043 | //\r | |
3044 | // Reset the tick time for the next retransmission\r | |
3045 | //\r | |
3046 | TxCb->TickTime = 0;\r | |
3047 | \r | |
3048 | //\r | |
3049 | // Retransmit the last sent packet again.\r | |
3050 | //\r | |
3051 | Dhcp6TransmitPacket (Instance, TxCb->TxPacket, TxCb->Elapsed);\r | |
129b8b09 | 3052 | TxCb->SolicitRetry = FALSE;\r |
3053 | if (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgSolicit) {\r | |
3054 | TxCb->SolicitRetry = TRUE;\r | |
3055 | }\r | |
a3bcde70 HT |
3056 | }\r |
3057 | }\r | |
3058 | \r | |
3059 | //\r | |
3060 | // 2. Check the configured Ia, count lease time of every valid Ia to check\r | |
3061 | // whether need to renew or rebind this Ia.\r | |
3062 | //\r | |
3063 | IaCb = &Instance->IaCb;\r | |
3064 | \r | |
3065 | if (Instance->Config == NULL || IaCb->Ia == NULL) {\r | |
3066 | return;\r | |
3067 | }\r | |
3068 | \r | |
3069 | if (IaCb->Ia->State == Dhcp6Bound || IaCb->Ia->State == Dhcp6Renewing || IaCb->Ia->State == Dhcp6Rebinding) {\r | |
3070 | \r | |
3071 | IaCb->LeaseTime++;\r | |
3072 | \r | |
3073 | if (IaCb->LeaseTime > IaCb->T2 && IaCb->Ia->State == Dhcp6Bound) {\r | |
3074 | //\r | |
3075 | // Exceed t2, send rebind packet to extend the Ia lease.\r | |
3076 | //\r | |
3077 | Dhcp6SendRenewRebindMsg (Instance, TRUE);\r | |
3078 | \r | |
3079 | } else if (IaCb->LeaseTime > IaCb->T1 && IaCb->Ia->State == Dhcp6Bound) {\r | |
3080 | \r | |
3081 | //\r | |
3082 | // Exceed t1, send renew packet to extend the Ia lease.\r | |
3083 | //\r | |
3084 | Dhcp6SendRenewRebindMsg (Instance, FALSE);\r | |
3085 | }\r | |
3086 | }\r | |
3087 | \r | |
3088 | //\r | |
3089 | // 3. In any situation when a client may have moved to a new link, the\r | |
3090 | // client MUST initiate a Confirm/Reply message exchange.\r | |
3091 | //\r | |
3092 | if (Dhcp6LinkMovDetect (Instance) && (IaCb->Ia->State == Dhcp6Bound)) {\r | |
3093 | Dhcp6SendConfirmMsg (Instance);\r | |
3094 | }\r | |
3095 | \r | |
3096 | return;\r | |
3097 | \r | |
3098 | ON_CLOSE:\r | |
3099 | \r | |
b9f256bb | 3100 | if (TxCb->TxPacket != NULL &&\r |
3101 | (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgInfoRequest ||\r | |
a3bcde70 | 3102 | TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgRenew ||\r |
b9f256bb | 3103 | TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgConfirm)\r |
a3bcde70 HT |
3104 | ) {\r |
3105 | //\r | |
3106 | // The failure of renew/Confirm will still switch to the bound state.\r | |
3107 | //\r | |
3108 | if ((TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgRenew) ||\r | |
3109 | (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgConfirm)) {\r | |
3110 | ASSERT (Instance->IaCb.Ia);\r | |
3111 | Instance->IaCb.Ia->State = Dhcp6Bound;\r | |
3112 | }\r | |
3113 | //\r | |
3114 | // The failure of info-request will return no response.\r | |
3115 | //\r | |
3116 | if (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgInfoRequest) {\r | |
3117 | Instance->UdpSts = EFI_NO_RESPONSE;\r | |
3118 | }\r | |
3119 | Dhcp6DequeueRetry (\r | |
3120 | Instance,\r | |
3121 | TxCb->Xid,\r | |
3122 | TRUE\r | |
3123 | );\r | |
3124 | } else {\r | |
3125 | //\r | |
3126 | // The failure of the others will terminate current state machine if timeout.\r | |
3127 | //\r | |
b9f256bb | 3128 | Dhcp6CleanupSession (Instance, Status);\r |
a3bcde70 HT |
3129 | }\r |
3130 | }\r |