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a3bcde70 HT |
1 | /** @file\r |
2 | Dhcp6 internal functions implementation.\r | |
3 | \r | |
8f586b85 | 4 | (C) Copyright 2014 Hewlett-Packard Development Company, L.P.<BR>\r |
f75a7f56 | 5 | Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>\r |
a3bcde70 | 6 | \r |
ecf98fbc | 7 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
a3bcde70 HT |
8 | \r |
9 | **/\r | |
10 | \r | |
11 | #include "Dhcp6Impl.h"\r | |
12 | \r | |
a3bcde70 HT |
13 | /**\r |
14 | Enqueue the packet into the retry list in case of timeout.\r | |
15 | \r | |
16 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
17 | @param[in] Packet The pointer to the Dhcp6 packet to retry.\r | |
18 | @param[in] Elapsed The pointer to the elapsed time value in the packet.\r | |
19 | @param[in] RetryCtl The pointer to the transmission control of the packet.\r | |
20 | This parameter is optional and may be NULL.\r | |
21 | \r | |
22 | @retval EFI_SUCCESS Successfully enqueued the packet into the retry list according\r | |
23 | to its message type.\r | |
24 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
25 | @retval EFI_DEVICE_ERROR An unexpected message type.\r | |
26 | \r | |
27 | **/\r | |
28 | EFI_STATUS\r | |
29 | Dhcp6EnqueueRetry (\r | |
30 | IN DHCP6_INSTANCE *Instance,\r | |
31 | IN EFI_DHCP6_PACKET *Packet,\r | |
32 | IN UINT16 *Elapsed,\r | |
33 | IN EFI_DHCP6_RETRANSMISSION *RetryCtl OPTIONAL\r | |
34 | )\r | |
35 | {\r | |
d1050b9d MK |
36 | DHCP6_TX_CB *TxCb;\r |
37 | DHCP6_IA_CB *IaCb;\r | |
a3bcde70 HT |
38 | \r |
39 | ASSERT (Packet != NULL);\r | |
40 | \r | |
41 | IaCb = &Instance->IaCb;\r | |
42 | TxCb = AllocateZeroPool (sizeof (DHCP6_TX_CB));\r | |
43 | \r | |
44 | if (TxCb == NULL) {\r | |
45 | return EFI_OUT_OF_RESOURCES;\r | |
46 | }\r | |
47 | \r | |
48 | //\r | |
75dce340 | 49 | // Save tx packet pointer, and it will be destroyed when reply received.\r |
a3bcde70 HT |
50 | //\r |
51 | TxCb->TxPacket = Packet;\r | |
52 | TxCb->Xid = Packet->Dhcp6.Header.TransactionId;\r | |
53 | \r | |
54 | //\r | |
55 | // Save pointer to elapsed-time value so we can update it on retransmits.\r | |
56 | //\r | |
d1050b9d | 57 | TxCb->Elapsed = Elapsed;\r |
a3bcde70 HT |
58 | \r |
59 | //\r | |
f97117ba | 60 | // Calculate the retransmission according to the message type.\r |
a3bcde70 HT |
61 | //\r |
62 | switch (Packet->Dhcp6.Header.MessageType) {\r | |
d1050b9d MK |
63 | case Dhcp6MsgSolicit:\r |
64 | //\r | |
65 | // Calculate the retransmission threshold value for solicit packet.\r | |
66 | // Use the default value by rfc-3315 if user doesn't configure.\r | |
67 | //\r | |
68 | if (RetryCtl == NULL) {\r | |
69 | TxCb->RetryCtl.Irt = DHCP6_SOL_IRT;\r | |
70 | TxCb->RetryCtl.Mrc = DHCP6_SOL_MRC;\r | |
71 | TxCb->RetryCtl.Mrt = DHCP6_SOL_MRT;\r | |
72 | TxCb->RetryCtl.Mrd = DHCP6_SOL_MRD;\r | |
73 | } else {\r | |
74 | TxCb->RetryCtl.Irt = (RetryCtl->Irt != 0) ? RetryCtl->Irt : DHCP6_SOL_IRT;\r | |
75 | TxCb->RetryCtl.Mrc = (RetryCtl->Mrc != 0) ? RetryCtl->Mrc : DHCP6_SOL_MRC;\r | |
76 | TxCb->RetryCtl.Mrt = (RetryCtl->Mrt != 0) ? RetryCtl->Mrt : DHCP6_SOL_MRT;\r | |
77 | TxCb->RetryCtl.Mrd = (RetryCtl->Mrd != 0) ? RetryCtl->Mrd : DHCP6_SOL_MRD;\r | |
78 | }\r | |
79 | \r | |
80 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
81 | TxCb->RetryCtl.Irt,\r | |
82 | TRUE,\r | |
83 | FALSE\r | |
84 | );\r | |
85 | break;\r | |
a3bcde70 | 86 | \r |
d1050b9d MK |
87 | case Dhcp6MsgRequest:\r |
88 | //\r | |
89 | // Calculate the retransmission threshold value for request packet.\r | |
90 | //\r | |
91 | TxCb->RetryCtl.Irt = DHCP6_REQ_IRT;\r | |
92 | TxCb->RetryCtl.Mrc = DHCP6_REQ_MRC;\r | |
93 | TxCb->RetryCtl.Mrt = DHCP6_REQ_MRT;\r | |
94 | TxCb->RetryCtl.Mrd = DHCP6_REQ_MRD;\r | |
95 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
a3bcde70 HT |
96 | TxCb->RetryCtl.Irt,\r |
97 | TRUE,\r | |
d1050b9d | 98 | TRUE\r |
a3bcde70 | 99 | );\r |
d1050b9d | 100 | break;\r |
a3bcde70 | 101 | \r |
d1050b9d MK |
102 | case Dhcp6MsgConfirm:\r |
103 | //\r | |
104 | // Calculate the retransmission threshold value for confirm packet.\r | |
105 | //\r | |
106 | TxCb->RetryCtl.Irt = DHCP6_CNF_IRT;\r | |
107 | TxCb->RetryCtl.Mrc = DHCP6_CNF_MRC;\r | |
108 | TxCb->RetryCtl.Mrt = DHCP6_CNF_MRT;\r | |
109 | TxCb->RetryCtl.Mrd = DHCP6_CNF_MRD;\r | |
110 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
111 | TxCb->RetryCtl.Irt,\r | |
112 | TRUE,\r | |
113 | TRUE\r | |
114 | );\r | |
115 | break;\r | |
a3bcde70 | 116 | \r |
d1050b9d MK |
117 | case Dhcp6MsgRenew:\r |
118 | //\r | |
119 | // Calculate the retransmission threshold value for renew packet.\r | |
120 | //\r | |
121 | TxCb->RetryCtl.Irt = DHCP6_REB_IRT;\r | |
122 | TxCb->RetryCtl.Mrc = DHCP6_REB_MRC;\r | |
123 | TxCb->RetryCtl.Mrt = DHCP6_REB_MRT;\r | |
124 | TxCb->RetryCtl.Mrd = IaCb->T2 - IaCb->T1;\r | |
125 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
126 | TxCb->RetryCtl.Irt,\r | |
127 | TRUE,\r | |
128 | TRUE\r | |
129 | );\r | |
130 | break;\r | |
a3bcde70 | 131 | \r |
d1050b9d MK |
132 | case Dhcp6MsgRebind:\r |
133 | //\r | |
134 | // Calculate the retransmission threshold value for rebind packet.\r | |
135 | //\r | |
136 | TxCb->RetryCtl.Irt = DHCP6_REN_IRT;\r | |
137 | TxCb->RetryCtl.Mrc = DHCP6_REN_MRC;\r | |
138 | TxCb->RetryCtl.Mrt = DHCP6_REN_MRT;\r | |
139 | TxCb->RetryCtl.Mrd = IaCb->AllExpireTime - IaCb->T2;\r | |
140 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
141 | TxCb->RetryCtl.Irt,\r | |
142 | TRUE,\r | |
143 | TRUE\r | |
144 | );\r | |
145 | break;\r | |
a3bcde70 | 146 | \r |
d1050b9d MK |
147 | case Dhcp6MsgDecline:\r |
148 | //\r | |
149 | // Calculate the retransmission threshold value for decline packet.\r | |
150 | //\r | |
151 | TxCb->RetryCtl.Irt = DHCP6_DEC_IRT;\r | |
152 | TxCb->RetryCtl.Mrc = DHCP6_DEC_MRC;\r | |
153 | TxCb->RetryCtl.Mrt = DHCP6_DEC_MRT;\r | |
154 | TxCb->RetryCtl.Mrd = DHCP6_DEC_MRD;\r | |
155 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
156 | TxCb->RetryCtl.Irt,\r | |
157 | TRUE,\r | |
158 | TRUE\r | |
159 | );\r | |
160 | break;\r | |
a3bcde70 | 161 | \r |
d1050b9d MK |
162 | case Dhcp6MsgRelease:\r |
163 | //\r | |
164 | // Calculate the retransmission threshold value for release packet.\r | |
165 | //\r | |
166 | TxCb->RetryCtl.Irt = DHCP6_REL_IRT;\r | |
167 | TxCb->RetryCtl.Mrc = DHCP6_REL_MRC;\r | |
168 | TxCb->RetryCtl.Mrt = DHCP6_REL_MRT;\r | |
169 | TxCb->RetryCtl.Mrd = DHCP6_REL_MRD;\r | |
170 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
a3bcde70 HT |
171 | TxCb->RetryCtl.Irt,\r |
172 | TRUE,\r | |
173 | TRUE\r | |
174 | );\r | |
d1050b9d | 175 | break;\r |
a3bcde70 | 176 | \r |
d1050b9d MK |
177 | case Dhcp6MsgInfoRequest:\r |
178 | //\r | |
179 | // Calculate the retransmission threshold value for info-request packet.\r | |
180 | // Use the default value by rfc-3315 if user doesn't configure.\r | |
181 | //\r | |
182 | if (RetryCtl == NULL) {\r | |
183 | TxCb->RetryCtl.Irt = DHCP6_INF_IRT;\r | |
184 | TxCb->RetryCtl.Mrc = DHCP6_INF_MRC;\r | |
185 | TxCb->RetryCtl.Mrt = DHCP6_INF_MRT;\r | |
186 | TxCb->RetryCtl.Mrd = DHCP6_INF_MRD;\r | |
187 | } else {\r | |
188 | TxCb->RetryCtl.Irt = (RetryCtl->Irt != 0) ? RetryCtl->Irt : DHCP6_INF_IRT;\r | |
189 | TxCb->RetryCtl.Mrc = (RetryCtl->Mrc != 0) ? RetryCtl->Mrc : DHCP6_INF_MRC;\r | |
190 | TxCb->RetryCtl.Mrt = (RetryCtl->Mrt != 0) ? RetryCtl->Mrt : DHCP6_INF_MRT;\r | |
191 | TxCb->RetryCtl.Mrd = (RetryCtl->Mrd != 0) ? RetryCtl->Mrd : DHCP6_INF_MRD;\r | |
192 | }\r | |
193 | \r | |
194 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
195 | TxCb->RetryCtl.Irt,\r | |
196 | TRUE,\r | |
197 | TRUE\r | |
198 | );\r | |
199 | break;\r | |
200 | \r | |
201 | default:\r | |
202 | //\r | |
203 | // Unexpected message type.\r | |
204 | //\r | |
205 | FreePool (TxCb);\r | |
206 | return EFI_DEVICE_ERROR;\r | |
a3bcde70 HT |
207 | }\r |
208 | \r | |
209 | //\r | |
210 | // Insert into the retransmit list of the instance.\r | |
211 | //\r | |
212 | InsertTailList (&Instance->TxList, &TxCb->Link);\r | |
213 | \r | |
214 | return EFI_SUCCESS;\r | |
215 | }\r | |
216 | \r | |
a3bcde70 HT |
217 | /**\r |
218 | Dequeue the packet from retry list if reply received or timeout at last.\r | |
219 | \r | |
220 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
221 | @param[in] PacketXid The packet transaction id to match.\r | |
222 | @param[in] NeedSignal If TRUE, then an timeout event need be signaled when it is existed.\r | |
223 | Otherwise, this parameter is ignored.\r | |
224 | \r | |
225 | @retval EFI_SUCCESS Successfully dequeued the packet into retry list .\r | |
226 | @retval EFI_NOT_FOUND There is no xid matched in retry list.\r | |
227 | \r | |
228 | **/\r | |
229 | EFI_STATUS\r | |
230 | Dhcp6DequeueRetry (\r | |
d1050b9d MK |
231 | IN DHCP6_INSTANCE *Instance,\r |
232 | IN UINT32 PacketXid,\r | |
233 | IN BOOLEAN NeedSignal\r | |
a3bcde70 HT |
234 | )\r |
235 | {\r | |
d1050b9d MK |
236 | LIST_ENTRY *Entry;\r |
237 | LIST_ENTRY *NextEntry;\r | |
238 | DHCP6_TX_CB *TxCb;\r | |
239 | DHCP6_INF_CB *InfCb;\r | |
a3bcde70 HT |
240 | \r |
241 | //\r | |
242 | // Seek the retransmit node in the retransmit list by packet xid.\r | |
243 | //\r | |
244 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, &Instance->TxList) {\r | |
a3bcde70 | 245 | TxCb = NET_LIST_USER_STRUCT (Entry, DHCP6_TX_CB, Link);\r |
d1050b9d | 246 | ASSERT (TxCb->TxPacket);\r |
a3bcde70 HT |
247 | \r |
248 | if (TxCb->Xid == PacketXid) {\r | |
a3bcde70 | 249 | if (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgInfoRequest) {\r |
a3bcde70 HT |
250 | //\r |
251 | // Seek the info-request node in the info-request list by packet xid.\r | |
252 | //\r | |
253 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, &Instance->InfList) {\r | |
a3bcde70 HT |
254 | InfCb = NET_LIST_USER_STRUCT (Entry, DHCP6_INF_CB, Link);\r |
255 | \r | |
256 | if (InfCb->Xid == PacketXid) {\r | |
257 | //\r | |
258 | // Remove the info-request node, and signal the event if timeout.\r | |
259 | //\r | |
d1050b9d | 260 | if ((InfCb->TimeoutEvent != NULL) && NeedSignal) {\r |
a3bcde70 HT |
261 | gBS->SignalEvent (InfCb->TimeoutEvent);\r |
262 | }\r | |
263 | \r | |
264 | RemoveEntryList (&InfCb->Link);\r | |
265 | FreePool (InfCb);\r | |
266 | }\r | |
267 | }\r | |
268 | }\r | |
d1050b9d | 269 | \r |
a3bcde70 HT |
270 | //\r |
271 | // Remove the retransmit node.\r | |
272 | //\r | |
273 | RemoveEntryList (&TxCb->Link);\r | |
d1050b9d | 274 | ASSERT (TxCb->TxPacket);\r |
a3bcde70 HT |
275 | FreePool (TxCb->TxPacket);\r |
276 | FreePool (TxCb);\r | |
277 | return EFI_SUCCESS;\r | |
278 | }\r | |
279 | }\r | |
280 | \r | |
281 | return EFI_NOT_FOUND;\r | |
282 | }\r | |
283 | \r | |
a3bcde70 HT |
284 | /**\r |
285 | Clean up the specific nodes in the retry list.\r | |
286 | \r | |
287 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
288 | @param[in] Scope The scope of cleanup nodes.\r | |
289 | \r | |
290 | **/\r | |
291 | VOID\r | |
292 | Dhcp6CleanupRetry (\r | |
d1050b9d MK |
293 | IN DHCP6_INSTANCE *Instance,\r |
294 | IN UINT32 Scope\r | |
a3bcde70 HT |
295 | )\r |
296 | {\r | |
d1050b9d MK |
297 | LIST_ENTRY *Entry;\r |
298 | LIST_ENTRY *NextEntry;\r | |
299 | DHCP6_TX_CB *TxCb;\r | |
300 | DHCP6_INF_CB *InfCb;\r | |
a3bcde70 HT |
301 | \r |
302 | //\r | |
303 | // Clean up all the stateful messages from the retransmit list.\r | |
304 | //\r | |
d1050b9d | 305 | if ((Scope == DHCP6_PACKET_STATEFUL) || (Scope == DHCP6_PACKET_ALL)) {\r |
a3bcde70 | 306 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, &Instance->TxList) {\r |
a3bcde70 | 307 | TxCb = NET_LIST_USER_STRUCT (Entry, DHCP6_TX_CB, Link);\r |
d1050b9d | 308 | ASSERT (TxCb->TxPacket);\r |
a3bcde70 HT |
309 | \r |
310 | if (TxCb->TxPacket->Dhcp6.Header.MessageType != Dhcp6MsgInfoRequest) {\r | |
311 | RemoveEntryList (&TxCb->Link);\r | |
312 | FreePool (TxCb->TxPacket);\r | |
313 | FreePool (TxCb);\r | |
314 | }\r | |
315 | }\r | |
316 | }\r | |
317 | \r | |
318 | //\r | |
319 | // Clean up all the stateless messages from the retransmit list.\r | |
320 | //\r | |
d1050b9d | 321 | if ((Scope == DHCP6_PACKET_STATELESS) || (Scope == DHCP6_PACKET_ALL)) {\r |
a3bcde70 HT |
322 | //\r |
323 | // Clean up all the retransmit list for stateless messages.\r | |
324 | //\r | |
325 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, &Instance->TxList) {\r | |
a3bcde70 | 326 | TxCb = NET_LIST_USER_STRUCT (Entry, DHCP6_TX_CB, Link);\r |
d1050b9d | 327 | ASSERT (TxCb->TxPacket);\r |
a3bcde70 HT |
328 | \r |
329 | if (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgInfoRequest) {\r | |
330 | RemoveEntryList (&TxCb->Link);\r | |
331 | FreePool (TxCb->TxPacket);\r | |
332 | FreePool (TxCb);\r | |
333 | }\r | |
334 | }\r | |
335 | \r | |
336 | //\r | |
337 | // Clean up all the info-request messages list.\r | |
338 | //\r | |
339 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, &Instance->InfList) {\r | |
a3bcde70 HT |
340 | InfCb = NET_LIST_USER_STRUCT (Entry, DHCP6_INF_CB, Link);\r |
341 | \r | |
342 | if (InfCb->TimeoutEvent != NULL) {\r | |
343 | gBS->SignalEvent (InfCb->TimeoutEvent);\r | |
344 | }\r | |
d1050b9d | 345 | \r |
a3bcde70 HT |
346 | RemoveEntryList (&InfCb->Link);\r |
347 | FreePool (InfCb);\r | |
348 | }\r | |
349 | }\r | |
350 | }\r | |
351 | \r | |
d2ea3b83 FS |
352 | /**\r |
353 | Check whether the TxCb is still a valid control block in the instance's retry list.\r | |
354 | \r | |
355 | @param[in] Instance The pointer to DHCP6_INSTANCE.\r | |
356 | @param[in] TxCb The control block for a transmitted message.\r | |
357 | \r | |
358 | @retval TRUE The control block is in Instance's retry list.\r | |
359 | @retval FALSE The control block is NOT in Instance's retry list.\r | |
f75a7f56 | 360 | \r |
d2ea3b83 FS |
361 | **/\r |
362 | BOOLEAN\r | |
363 | Dhcp6IsValidTxCb (\r | |
d1050b9d MK |
364 | IN DHCP6_INSTANCE *Instance,\r |
365 | IN DHCP6_TX_CB *TxCb\r | |
d2ea3b83 FS |
366 | )\r |
367 | {\r | |
d1050b9d | 368 | LIST_ENTRY *Entry;\r |
d2ea3b83 FS |
369 | \r |
370 | NET_LIST_FOR_EACH (Entry, &Instance->TxList) {\r | |
371 | if (TxCb == NET_LIST_USER_STRUCT (Entry, DHCP6_TX_CB, Link)) {\r | |
372 | return TRUE;\r | |
373 | }\r | |
374 | }\r | |
375 | \r | |
376 | return FALSE;\r | |
377 | }\r | |
a3bcde70 HT |
378 | \r |
379 | /**\r | |
380 | Clean up the session of the instance stateful exchange.\r | |
381 | \r | |
382 | @param[in, out] Instance The pointer to the Dhcp6 instance.\r | |
383 | @param[in] Status The return status from udp.\r | |
384 | \r | |
385 | **/\r | |
386 | VOID\r | |
387 | Dhcp6CleanupSession (\r | |
d1050b9d MK |
388 | IN OUT DHCP6_INSTANCE *Instance,\r |
389 | IN EFI_STATUS Status\r | |
a3bcde70 HT |
390 | )\r |
391 | {\r | |
d1050b9d MK |
392 | UINTN Index;\r |
393 | EFI_DHCP6_IA *Ia;\r | |
a3bcde70 | 394 | \r |
d1050b9d MK |
395 | ASSERT (Instance->Config);\r |
396 | ASSERT (Instance->IaCb.Ia);\r | |
a3bcde70 HT |
397 | \r |
398 | //\r | |
399 | // Clean up the retransmit list for stateful messages.\r | |
400 | //\r | |
401 | Dhcp6CleanupRetry (Instance, DHCP6_PACKET_STATEFUL);\r | |
402 | \r | |
403 | if (Instance->Unicast != NULL) {\r | |
404 | FreePool (Instance->Unicast);\r | |
405 | }\r | |
406 | \r | |
407 | if (Instance->AdSelect != NULL) {\r | |
408 | FreePool (Instance->AdSelect);\r | |
409 | }\r | |
410 | \r | |
411 | if (Instance->IaCb.Ia->ReplyPacket != NULL) {\r | |
412 | FreePool (Instance->IaCb.Ia->ReplyPacket);\r | |
413 | }\r | |
414 | \r | |
415 | //\r | |
416 | // Reinitialize the Ia fields of the instance.\r | |
417 | //\r | |
d1050b9d MK |
418 | Instance->UdpSts = Status;\r |
419 | Instance->AdSelect = NULL;\r | |
420 | Instance->AdPref = 0;\r | |
421 | Instance->Unicast = NULL;\r | |
422 | Instance->IaCb.T1 = 0;\r | |
423 | Instance->IaCb.T2 = 0;\r | |
424 | Instance->IaCb.AllExpireTime = 0;\r | |
425 | Instance->IaCb.LeaseTime = 0;\r | |
a3bcde70 HT |
426 | \r |
427 | //\r | |
428 | // Clear start time\r | |
429 | //\r | |
d1050b9d | 430 | Instance->StartTime = 0;\r |
a3bcde70 | 431 | \r |
d1050b9d MK |
432 | Ia = Instance->IaCb.Ia;\r |
433 | Ia->State = Dhcp6Init;\r | |
434 | Ia->ReplyPacket = NULL;\r | |
a3bcde70 HT |
435 | \r |
436 | //\r | |
437 | // Set the addresses as zero lifetime, and then the notify\r | |
438 | // function in Ip6Config will remove these timeout address.\r | |
439 | //\r | |
440 | for (Index = 0; Index < Ia->IaAddressCount; Index++) {\r | |
441 | Ia->IaAddress[Index].PreferredLifetime = 0;\r | |
442 | Ia->IaAddress[Index].ValidLifetime = 0;\r | |
443 | }\r | |
444 | \r | |
445 | //\r | |
446 | //\r | |
447 | // Signal the Ia information updated event to informal user.\r | |
448 | //\r | |
449 | if (Instance->Config->IaInfoEvent != NULL) {\r | |
450 | gBS->SignalEvent (Instance->Config->IaInfoEvent);\r | |
451 | }\r | |
452 | }\r | |
453 | \r | |
a3bcde70 HT |
454 | /**\r |
455 | Callback to user when Dhcp6 transmit/receive occurs.\r | |
456 | \r | |
457 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
458 | @param[in] Event The current Dhcp6 event.\r | |
459 | @param[in, out] Packet The pointer to the packet sending or received.\r | |
460 | \r | |
461 | @retval EFI_SUCCESS The user function returns success.\r | |
462 | @retval EFI_NOT_READY Direct the caller to continue collecting the offer.\r | |
463 | @retval EFI_ABORTED The user function ask it to abort.\r | |
464 | \r | |
465 | **/\r | |
466 | EFI_STATUS\r | |
467 | EFIAPI\r | |
468 | Dhcp6CallbackUser (\r | |
d1050b9d MK |
469 | IN DHCP6_INSTANCE *Instance,\r |
470 | IN EFI_DHCP6_EVENT Event,\r | |
471 | IN OUT EFI_DHCP6_PACKET **Packet\r | |
a3bcde70 HT |
472 | )\r |
473 | {\r | |
d1050b9d MK |
474 | EFI_STATUS Status;\r |
475 | EFI_DHCP6_PACKET *NewPacket;\r | |
476 | EFI_DHCP6_CALLBACK Callback;\r | |
477 | VOID *Context;\r | |
a3bcde70 HT |
478 | \r |
479 | ASSERT (Packet != NULL);\r | |
480 | ASSERT (Instance->Config != NULL);\r | |
481 | ASSERT (Instance->IaCb.Ia != NULL);\r | |
482 | \r | |
483 | NewPacket = NULL;\r | |
484 | Status = EFI_SUCCESS;\r | |
485 | Callback = Instance->Config->Dhcp6Callback;\r | |
486 | Context = Instance->Config->CallbackContext;\r | |
487 | \r | |
488 | //\r | |
489 | // Callback to user with the new message if has.\r | |
490 | //\r | |
491 | if (Callback != NULL) {\r | |
a3bcde70 HT |
492 | Status = Callback (\r |
493 | &Instance->Dhcp6,\r | |
494 | Context,\r | |
495 | Instance->IaCb.Ia->State,\r | |
496 | Event,\r | |
497 | *Packet,\r | |
498 | &NewPacket\r | |
499 | );\r | |
500 | //\r | |
501 | // Updated the new packet from user to replace the original one.\r | |
502 | //\r | |
503 | if (NewPacket != NULL) {\r | |
504 | ASSERT (*Packet != NULL);\r | |
505 | FreePool (*Packet);\r | |
506 | *Packet = NewPacket;\r | |
507 | }\r | |
508 | }\r | |
509 | \r | |
510 | return Status;\r | |
511 | }\r | |
512 | \r | |
a3bcde70 HT |
513 | /**\r |
514 | Update Ia according to the new reply message.\r | |
515 | \r | |
516 | @param[in, out] Instance The pointer to the Dhcp6 instance.\r | |
517 | @param[in] Packet The pointer to reply messages.\r | |
518 | \r | |
519 | @retval EFI_SUCCESS Updated the Ia information successfully.\r | |
520 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
521 | \r | |
522 | **/\r | |
523 | EFI_STATUS\r | |
524 | Dhcp6UpdateIaInfo (\r | |
d1050b9d MK |
525 | IN OUT DHCP6_INSTANCE *Instance,\r |
526 | IN EFI_DHCP6_PACKET *Packet\r | |
a3bcde70 HT |
527 | )\r |
528 | {\r | |
d1050b9d MK |
529 | EFI_STATUS Status;\r |
530 | UINT8 *Option;\r | |
531 | UINT8 *IaInnerOpt;\r | |
532 | UINT16 IaInnerLen;\r | |
533 | UINT16 StsCode;\r | |
534 | UINT32 T1;\r | |
535 | UINT32 T2;\r | |
a3bcde70 HT |
536 | \r |
537 | ASSERT (Instance->Config != NULL);\r | |
538 | //\r | |
f97117ba | 539 | // If the reply was received in response to a solicit with rapid commit option,\r |
a3bcde70 HT |
540 | // request, renew or rebind message, the client updates the information it has\r |
541 | // recorded about IAs from the IA options contained in the reply message:\r | |
542 | // 1. record the T1 and T2 times\r | |
543 | // 2. add any new addresses in the IA\r | |
544 | // 3. discard any addresses from the IA, that have a valid lifetime of 0\r | |
f97117ba | 545 | // 4. update lifetimes for any addresses that already recorded\r |
a3bcde70 HT |
546 | // 5. leave unchanged any information about addresses\r |
547 | //\r | |
548 | // See details in the section-18.1.8 of rfc-3315.\r | |
549 | //\r | |
a3bcde70 HT |
550 | Option = Dhcp6SeekIaOption (\r |
551 | Packet->Dhcp6.Option,\r | |
552 | Packet->Length - sizeof (EFI_DHCP6_HEADER),\r | |
553 | &Instance->Config->IaDescriptor\r | |
554 | );\r | |
555 | if (Option == NULL) {\r | |
556 | return EFI_DEVICE_ERROR;\r | |
557 | }\r | |
558 | \r | |
559 | //\r | |
560 | // The format of the IA_NA option is:\r | |
561 | //\r | |
562 | // 0 1 2 3\r | |
563 | // 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 | |
564 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
565 | // | OPTION_IA_NA | option-len |\r | |
566 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
567 | // | IAID (4 octets) |\r | |
568 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
569 | // | T1 |\r | |
570 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
571 | // | T2 |\r | |
572 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
573 | // | |\r | |
574 | // . IA_NA-options .\r | |
575 | // . .\r | |
576 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
577 | //\r | |
578 | // The format of the IA_TA option is:\r | |
579 | //\r | |
580 | // 0 1 2 3\r | |
581 | // 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 | |
582 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
583 | // | OPTION_IA_TA | option-len |\r | |
584 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
585 | // | IAID (4 octets) |\r | |
586 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
587 | // | |\r | |
588 | // . IA_TA-options .\r | |
589 | // . .\r | |
590 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
591 | //\r | |
592 | \r | |
593 | //\r | |
594 | // sizeof (option-code + option-len + IaId) = 8\r | |
595 | // sizeof (option-code + option-len + IaId + T1) = 12\r | |
596 | // sizeof (option-code + option-len + IaId + T1 + T2) = 16\r | |
597 | //\r | |
598 | // The inner options still start with 2 bytes option-code and 2 bytes option-len.\r | |
599 | //\r | |
600 | if (Instance->Config->IaDescriptor.Type == Dhcp6OptIana) {\r | |
d1050b9d MK |
601 | T1 = NTOHL (ReadUnaligned32 ((UINT32 *)(Option + 8)));\r |
602 | T2 = NTOHL (ReadUnaligned32 ((UINT32 *)(Option + 12)));\r | |
685e44a5 | 603 | //\r |
604 | // Refer to RFC3155 Chapter 22.4. If a client receives an IA_NA with T1 greater than T2,\r | |
605 | // and both T1 and T2 are greater than 0, the client discards the IA_NA option and processes\r | |
606 | // the remainder of the message as though the server had not included the invalid IA_NA option.\r | |
607 | //\r | |
d1050b9d | 608 | if ((T1 > T2) && (T2 > 0)) {\r |
685e44a5 | 609 | return EFI_DEVICE_ERROR;\r |
610 | }\r | |
d1050b9d | 611 | \r |
a3bcde70 | 612 | IaInnerOpt = Option + 16;\r |
d1050b9d | 613 | IaInnerLen = (UINT16)(NTOHS (ReadUnaligned16 ((UINT16 *)(Option + 2))) - 12);\r |
a3bcde70 | 614 | } else {\r |
d1050b9d MK |
615 | T1 = 0;\r |
616 | T2 = 0;\r | |
a3bcde70 | 617 | IaInnerOpt = Option + 8;\r |
d1050b9d | 618 | IaInnerLen = (UINT16)(NTOHS (ReadUnaligned16 ((UINT16 *)(Option + 2))) - 4);\r |
a3bcde70 HT |
619 | }\r |
620 | \r | |
621 | //\r | |
622 | // The format of the Status Code option is:\r | |
623 | //\r | |
624 | // 0 1 2 3\r | |
625 | // 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 | |
626 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
627 | // | OPTION_STATUS_CODE | option-len |\r | |
628 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
629 | // | status-code | |\r | |
630 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |\r | |
631 | // . .\r | |
632 | // . status-message .\r | |
633 | // . .\r | |
634 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
635 | //\r | |
636 | \r | |
637 | //\r | |
638 | // sizeof (option-code + option-len) = 4\r | |
639 | //\r | |
640 | StsCode = Dhcp6StsSuccess;\r | |
641 | Option = Dhcp6SeekOption (IaInnerOpt, IaInnerLen, Dhcp6OptStatusCode);\r | |
642 | \r | |
643 | if (Option != NULL) {\r | |
d1050b9d | 644 | StsCode = NTOHS (ReadUnaligned16 ((UINT16 *)(Option + 4)));\r |
a3bcde70 HT |
645 | if (StsCode != Dhcp6StsSuccess) {\r |
646 | return EFI_DEVICE_ERROR;\r | |
647 | }\r | |
648 | }\r | |
649 | \r | |
650 | //\r | |
651 | // Generate control block for the Ia.\r | |
652 | //\r | |
653 | Status = Dhcp6GenerateIaCb (\r | |
654 | Instance,\r | |
655 | IaInnerOpt,\r | |
656 | IaInnerLen,\r | |
657 | T1,\r | |
658 | T2\r | |
659 | );\r | |
660 | \r | |
661 | return Status;\r | |
662 | }\r | |
663 | \r | |
a3bcde70 HT |
664 | /**\r |
665 | Seek StatusCode Option in package. A Status Code option may appear in the\r | |
666 | options field of a DHCP message and/or in the options field of another option.\r | |
667 | See details in section 22.13, RFC3315.\r | |
668 | \r | |
669 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
670 | @param[in] Packet The pointer to reply messages.\r | |
671 | @param[out] Option The pointer to status code option.\r | |
672 | \r | |
673 | @retval EFI_SUCCESS Seek status code option successfully.\r | |
674 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
675 | \r | |
676 | **/\r | |
677 | EFI_STATUS\r | |
678 | Dhcp6SeekStsOption (\r | |
d1050b9d MK |
679 | IN DHCP6_INSTANCE *Instance,\r |
680 | IN EFI_DHCP6_PACKET *Packet,\r | |
681 | OUT UINT8 **Option\r | |
a3bcde70 HT |
682 | )\r |
683 | {\r | |
d1050b9d MK |
684 | UINT8 *IaInnerOpt;\r |
685 | UINT16 IaInnerLen;\r | |
686 | UINT16 StsCode;\r | |
a3bcde70 HT |
687 | \r |
688 | //\r | |
689 | // Seek StatusCode option directly in DHCP message body. That is, search in\r | |
690 | // non-encapsulated option fields.\r | |
691 | //\r | |
692 | *Option = Dhcp6SeekOption (\r | |
693 | Packet->Dhcp6.Option,\r | |
694 | Packet->Length - 4,\r | |
695 | Dhcp6OptStatusCode\r | |
696 | );\r | |
697 | \r | |
698 | if (*Option != NULL) {\r | |
d1050b9d | 699 | StsCode = NTOHS (ReadUnaligned16 ((UINT16 *)(*Option + 4)));\r |
a3bcde70 HT |
700 | if (StsCode != Dhcp6StsSuccess) {\r |
701 | return EFI_DEVICE_ERROR;\r | |
702 | }\r | |
703 | }\r | |
704 | \r | |
705 | //\r | |
706 | // Seek in encapsulated options, IA_NA and IA_TA.\r | |
707 | //\r | |
708 | *Option = Dhcp6SeekIaOption (\r | |
709 | Packet->Dhcp6.Option,\r | |
710 | Packet->Length - sizeof (EFI_DHCP6_HEADER),\r | |
711 | &Instance->Config->IaDescriptor\r | |
712 | );\r | |
713 | if (*Option == NULL) {\r | |
685e44a5 | 714 | return EFI_SUCCESS;\r |
a3bcde70 HT |
715 | }\r |
716 | \r | |
717 | //\r | |
718 | // The format of the IA_NA option is:\r | |
719 | //\r | |
720 | // 0 1 2 3\r | |
721 | // 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 | |
722 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
723 | // | OPTION_IA_NA | option-len |\r | |
724 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
725 | // | IAID (4 octets) |\r | |
726 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
727 | // | T1 |\r | |
728 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
729 | // | T2 |\r | |
730 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
731 | // | |\r | |
732 | // . IA_NA-options .\r | |
733 | // . .\r | |
734 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
735 | //\r | |
736 | // The format of the IA_TA option is:\r | |
737 | //\r | |
738 | // 0 1 2 3\r | |
739 | // 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 | |
740 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
741 | // | OPTION_IA_TA | option-len |\r | |
742 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
743 | // | IAID (4 octets) |\r | |
744 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
745 | // | |\r | |
746 | // . IA_TA-options .\r | |
747 | // . .\r | |
748 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
749 | //\r | |
750 | \r | |
751 | //\r | |
752 | // sizeof (option-code + option-len + IaId) = 8\r | |
753 | // sizeof (option-code + option-len + IaId + T1) = 12\r | |
754 | // sizeof (option-code + option-len + IaId + T1 + T2) = 16\r | |
755 | //\r | |
756 | // The inner options still start with 2 bytes option-code and 2 bytes option-len.\r | |
757 | //\r | |
758 | if (Instance->Config->IaDescriptor.Type == Dhcp6OptIana) {\r | |
759 | IaInnerOpt = *Option + 16;\r | |
d1050b9d | 760 | IaInnerLen = (UINT16)(NTOHS (ReadUnaligned16 ((UINT16 *)(*Option + 2))) - 12);\r |
a3bcde70 HT |
761 | } else {\r |
762 | IaInnerOpt = *Option + 8;\r | |
d1050b9d | 763 | IaInnerLen = (UINT16)(NTOHS (ReadUnaligned16 ((UINT16 *)(*Option + 2))) - 4);\r |
a3bcde70 HT |
764 | }\r |
765 | \r | |
766 | //\r | |
767 | // The format of the Status Code option is:\r | |
768 | //\r | |
769 | // 0 1 2 3\r | |
770 | // 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 | |
771 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
772 | // | OPTION_STATUS_CODE | option-len |\r | |
773 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
774 | // | status-code | |\r | |
775 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |\r | |
776 | // . .\r | |
777 | // . status-message .\r | |
778 | // . .\r | |
779 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+\r | |
780 | //\r | |
781 | \r | |
782 | //\r | |
783 | // sizeof (option-code + option-len) = 4\r | |
784 | //\r | |
d1050b9d | 785 | *Option = Dhcp6SeekOption (IaInnerOpt, IaInnerLen, Dhcp6OptStatusCode);\r |
a3bcde70 | 786 | if (*Option != NULL) {\r |
d1050b9d | 787 | StsCode = NTOHS (ReadUnaligned16 ((UINT16 *)(*Option + 4)));\r |
a3bcde70 HT |
788 | if (StsCode != Dhcp6StsSuccess) {\r |
789 | return EFI_DEVICE_ERROR;\r | |
790 | }\r | |
791 | }\r | |
792 | \r | |
793 | return EFI_SUCCESS;\r | |
794 | }\r | |
795 | \r | |
a3bcde70 HT |
796 | /**\r |
797 | Transmit Dhcp6 message by udpio.\r | |
798 | \r | |
799 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
800 | @param[in] Packet The pointer to transmit message.\r | |
801 | @param[in] Elapsed The pointer to the elapsed time value to fill in.\r | |
802 | \r | |
803 | @retval EFI_SUCCESS Successfully transmitted the packet.\r | |
804 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
805 | @retval Others Failed to transmit the packet.\r | |
806 | \r | |
807 | **/\r | |
808 | EFI_STATUS\r | |
809 | Dhcp6TransmitPacket (\r | |
d1050b9d MK |
810 | IN DHCP6_INSTANCE *Instance,\r |
811 | IN EFI_DHCP6_PACKET *Packet,\r | |
812 | IN UINT16 *Elapsed\r | |
a3bcde70 HT |
813 | )\r |
814 | {\r | |
d1050b9d MK |
815 | EFI_STATUS Status;\r |
816 | NET_BUF *Wrap;\r | |
817 | NET_FRAGMENT Frag;\r | |
818 | UDP_END_POINT EndPt;\r | |
819 | DHCP6_SERVICE *Service;\r | |
a3bcde70 HT |
820 | \r |
821 | Service = Instance->Service;\r | |
822 | \r | |
823 | //\r | |
824 | // Wrap it into a netbuf then send it.\r | |
825 | //\r | |
d1050b9d | 826 | Frag.Bulk = (UINT8 *)&Packet->Dhcp6.Header;\r |
a3bcde70 HT |
827 | Frag.Len = Packet->Length;\r |
828 | \r | |
829 | //\r | |
830 | // Do not register free packet here, which will be handled in retry list.\r | |
831 | //\r | |
832 | Wrap = NetbufFromExt (&Frag, 1, 0, 0, Dhcp6DummyExtFree, NULL);\r | |
833 | \r | |
834 | if (Wrap == NULL) {\r | |
835 | return EFI_OUT_OF_RESOURCES;\r | |
836 | }\r | |
837 | \r | |
838 | //\r | |
839 | // Multicast the Dhcp6 message, unless get the unicast server address by option.\r | |
840 | //\r | |
841 | ZeroMem (&EndPt, sizeof (UDP_END_POINT));\r | |
842 | \r | |
843 | if (Instance->Unicast != NULL) {\r | |
844 | CopyMem (\r | |
845 | &EndPt.RemoteAddr,\r | |
846 | Instance->Unicast,\r | |
847 | sizeof (EFI_IPv6_ADDRESS)\r | |
848 | );\r | |
849 | } else {\r | |
850 | CopyMem (\r | |
851 | &EndPt.RemoteAddr,\r | |
852 | &mAllDhcpRelayAndServersAddress,\r | |
853 | sizeof (EFI_IPv6_ADDRESS)\r | |
854 | );\r | |
855 | }\r | |
856 | \r | |
857 | EndPt.RemotePort = DHCP6_PORT_SERVER;\r | |
858 | EndPt.LocalPort = DHCP6_PORT_CLIENT;\r | |
859 | \r | |
860 | //\r | |
861 | // Update the elapsed time value.\r | |
862 | //\r | |
863 | if (Elapsed != NULL) {\r | |
864 | SetElapsedTime (Elapsed, Instance);\r | |
865 | }\r | |
866 | \r | |
867 | //\r | |
868 | // Send out the message by the configured Udp6Io.\r | |
869 | //\r | |
870 | Status = UdpIoSendDatagram (\r | |
871 | Service->UdpIo,\r | |
872 | Wrap,\r | |
873 | &EndPt,\r | |
874 | NULL,\r | |
875 | Dhcp6OnTransmitted,\r | |
876 | NULL\r | |
877 | );\r | |
878 | \r | |
879 | if (EFI_ERROR (Status)) {\r | |
880 | NetbufFree (Wrap);\r | |
881 | return Status;\r | |
882 | }\r | |
883 | \r | |
884 | return EFI_SUCCESS;\r | |
885 | }\r | |
886 | \r | |
a3bcde70 HT |
887 | /**\r |
888 | Create the solicit message and send it.\r | |
889 | \r | |
890 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
891 | \r | |
892 | @retval EFI_SUCCESS Created and sent the solicit message successfully.\r | |
893 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
894 | @retval Others Failed to send the solicit message.\r | |
895 | \r | |
896 | **/\r | |
897 | EFI_STATUS\r | |
898 | Dhcp6SendSolicitMsg (\r | |
d1050b9d | 899 | IN DHCP6_INSTANCE *Instance\r |
a3bcde70 HT |
900 | )\r |
901 | {\r | |
d1050b9d MK |
902 | EFI_STATUS Status;\r |
903 | EFI_DHCP6_PACKET *Packet;\r | |
904 | EFI_DHCP6_PACKET_OPTION *UserOpt;\r | |
905 | EFI_DHCP6_DUID *ClientId;\r | |
906 | DHCP6_SERVICE *Service;\r | |
907 | UINT8 *Cursor;\r | |
908 | UINT16 *Elapsed;\r | |
909 | UINT32 UserLen;\r | |
910 | UINTN Index;\r | |
911 | UINT16 Length;\r | |
a3bcde70 HT |
912 | \r |
913 | Service = Instance->Service;\r | |
914 | ClientId = Service->ClientId;\r | |
915 | UserLen = 0;\r | |
916 | \r | |
917 | ASSERT (Service->ClientId != NULL);\r | |
918 | ASSERT (Instance->Config != NULL);\r | |
919 | ASSERT (Instance->IaCb.Ia != NULL);\r | |
920 | \r | |
921 | //\r | |
922 | // Calculate the added length of customized option list.\r | |
923 | //\r | |
924 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
925 | UserLen += (NTOHS (Instance->Config->OptionList[Index]->OpLen) + 4);\r | |
926 | }\r | |
927 | \r | |
928 | //\r | |
f97117ba | 929 | // Create the Dhcp6 packet and initialize common fields.\r |
a3bcde70 HT |
930 | //\r |
931 | Packet = AllocateZeroPool (DHCP6_BASE_PACKET_SIZE + UserLen);\r | |
932 | if (Packet == NULL) {\r | |
933 | return EFI_OUT_OF_RESOURCES;\r | |
934 | }\r | |
935 | \r | |
936 | Packet->Size = DHCP6_BASE_PACKET_SIZE + UserLen;\r | |
937 | Packet->Length = sizeof (EFI_DHCP6_HEADER);\r | |
938 | Packet->Dhcp6.Header.MessageType = Dhcp6MsgSolicit;\r | |
939 | Packet->Dhcp6.Header.TransactionId = Service->Xid++;\r | |
940 | \r | |
941 | //\r | |
942 | // Assembly Dhcp6 options for solicit message.\r | |
943 | //\r | |
944 | Cursor = Packet->Dhcp6.Option;\r | |
945 | \r | |
946 | Length = HTONS (ClientId->Length);\r | |
947 | Cursor = Dhcp6AppendOption (\r | |
948 | Cursor,\r | |
949 | HTONS (Dhcp6OptClientId),\r | |
950 | Length,\r | |
951 | ClientId->Duid\r | |
952 | );\r | |
953 | \r | |
954 | Cursor = Dhcp6AppendETOption (\r | |
955 | Cursor,\r | |
956 | Instance,\r | |
957 | &Elapsed\r | |
958 | );\r | |
959 | \r | |
960 | Cursor = Dhcp6AppendIaOption (\r | |
961 | Cursor,\r | |
962 | Instance->IaCb.Ia,\r | |
963 | Instance->IaCb.T1,\r | |
685e44a5 | 964 | Instance->IaCb.T2,\r |
965 | Packet->Dhcp6.Header.MessageType\r | |
a3bcde70 HT |
966 | );\r |
967 | \r | |
968 | //\r | |
969 | // Append user-defined when configurate Dhcp6 service.\r | |
970 | //\r | |
971 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
a3bcde70 | 972 | UserOpt = Instance->Config->OptionList[Index];\r |
d1050b9d | 973 | Cursor = Dhcp6AppendOption (\r |
a3bcde70 HT |
974 | Cursor,\r |
975 | UserOpt->OpCode,\r | |
976 | UserOpt->OpLen,\r | |
977 | UserOpt->Data\r | |
978 | );\r | |
979 | }\r | |
980 | \r | |
981 | //\r | |
982 | // Determine the size/length of packet.\r | |
983 | //\r | |
d1050b9d | 984 | Packet->Length += (UINT32)(Cursor - Packet->Dhcp6.Option);\r |
a3bcde70 HT |
985 | ASSERT (Packet->Size > Packet->Length + 8);\r |
986 | \r | |
987 | //\r | |
988 | // Callback to user with the packet to be sent and check the user's feedback.\r | |
989 | //\r | |
990 | Status = Dhcp6CallbackUser (Instance, Dhcp6SendSolicit, &Packet);\r | |
991 | \r | |
992 | if (EFI_ERROR (Status)) {\r | |
993 | FreePool (Packet);\r | |
994 | return Status;\r | |
995 | }\r | |
996 | \r | |
997 | //\r | |
998 | // Send solicit packet with the state transition from Dhcp6init to\r | |
999 | // Dhcp6selecting.\r | |
1000 | //\r | |
1001 | Instance->IaCb.Ia->State = Dhcp6Selecting;\r | |
685e44a5 | 1002 | //\r |
1003 | // Clear initial time for current transaction.\r | |
1004 | //\r | |
1005 | Instance->StartTime = 0;\r | |
a3bcde70 HT |
1006 | \r |
1007 | Status = Dhcp6TransmitPacket (Instance, Packet, Elapsed);\r | |
1008 | \r | |
1009 | if (EFI_ERROR (Status)) {\r | |
1010 | FreePool (Packet);\r | |
1011 | return Status;\r | |
1012 | }\r | |
1013 | \r | |
1014 | //\r | |
1015 | // Enqueue the sent packet for the retransmission in case reply timeout.\r | |
1016 | //\r | |
1017 | return Dhcp6EnqueueRetry (\r | |
1018 | Instance,\r | |
1019 | Packet,\r | |
1020 | Elapsed,\r | |
1021 | Instance->Config->SolicitRetransmission\r | |
1022 | );\r | |
1023 | }\r | |
1024 | \r | |
1025 | /**\r | |
1026 | Configure some parameter to initiate SolicitMsg.\r | |
1027 | \r | |
1028 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1029 | \r | |
1030 | @retval EFI_SUCCESS Created and sent the solicit message successfully.\r | |
1031 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1032 | @retval Others Failed to send the solicit message.\r | |
1033 | \r | |
1034 | **/\r | |
1035 | EFI_STATUS\r | |
1036 | Dhcp6InitSolicitMsg (\r | |
d1050b9d | 1037 | IN DHCP6_INSTANCE *Instance\r |
a3bcde70 HT |
1038 | )\r |
1039 | {\r | |
d1050b9d MK |
1040 | Instance->IaCb.T1 = 0;\r |
1041 | Instance->IaCb.T2 = 0;\r | |
a3bcde70 HT |
1042 | Instance->IaCb.Ia->IaAddressCount = 0;\r |
1043 | \r | |
1044 | return Dhcp6SendSolicitMsg (Instance);\r | |
1045 | }\r | |
1046 | \r | |
a3bcde70 HT |
1047 | /**\r |
1048 | Create the request message and send it.\r | |
1049 | \r | |
1050 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1051 | \r | |
1052 | @retval EFI_SUCCESS Created and sent the request message successfully.\r | |
1053 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1054 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
1055 | @retval Others Failed to send the request message.\r | |
1056 | \r | |
1057 | **/\r | |
1058 | EFI_STATUS\r | |
1059 | Dhcp6SendRequestMsg (\r | |
d1050b9d | 1060 | IN DHCP6_INSTANCE *Instance\r |
a3bcde70 HT |
1061 | )\r |
1062 | {\r | |
d1050b9d MK |
1063 | EFI_STATUS Status;\r |
1064 | EFI_DHCP6_PACKET *Packet;\r | |
1065 | EFI_DHCP6_PACKET_OPTION *UserOpt;\r | |
1066 | EFI_DHCP6_DUID *ClientId;\r | |
1067 | EFI_DHCP6_DUID *ServerId;\r | |
1068 | DHCP6_SERVICE *Service;\r | |
1069 | UINT8 *Option;\r | |
1070 | UINT8 *Cursor;\r | |
1071 | UINT16 *Elapsed;\r | |
1072 | UINT32 UserLen;\r | |
1073 | UINTN Index;\r | |
1074 | UINT16 Length;\r | |
1075 | \r | |
1076 | ASSERT (Instance->AdSelect != NULL);\r | |
1077 | ASSERT (Instance->Config != NULL);\r | |
1078 | ASSERT (Instance->IaCb.Ia != NULL);\r | |
1079 | ASSERT (Instance->Service != NULL);\r | |
a3bcde70 HT |
1080 | \r |
1081 | Service = Instance->Service;\r | |
1082 | ClientId = Service->ClientId;\r | |
1083 | \r | |
d1050b9d | 1084 | ASSERT (ClientId != NULL);\r |
a3bcde70 HT |
1085 | \r |
1086 | //\r | |
1087 | // Get the server Id from the selected advertisement message.\r | |
1088 | //\r | |
1089 | Option = Dhcp6SeekOption (\r | |
1090 | Instance->AdSelect->Dhcp6.Option,\r | |
1091 | Instance->AdSelect->Length - 4,\r | |
1092 | Dhcp6OptServerId\r | |
1093 | );\r | |
1094 | if (Option == NULL) {\r | |
1095 | return EFI_DEVICE_ERROR;\r | |
1096 | }\r | |
1097 | \r | |
d1050b9d | 1098 | ServerId = (EFI_DHCP6_DUID *)(Option + 2);\r |
a3bcde70 HT |
1099 | \r |
1100 | //\r | |
1101 | // Calculate the added length of customized option list.\r | |
1102 | //\r | |
1103 | UserLen = 0;\r | |
1104 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
1105 | UserLen += (NTOHS (Instance->Config->OptionList[Index]->OpLen) + 4);\r | |
1106 | }\r | |
1107 | \r | |
1108 | //\r | |
f97117ba | 1109 | // Create the Dhcp6 packet and initialize common fields.\r |
a3bcde70 HT |
1110 | //\r |
1111 | Packet = AllocateZeroPool (DHCP6_BASE_PACKET_SIZE + UserLen);\r | |
1112 | if (Packet == NULL) {\r | |
1113 | return EFI_OUT_OF_RESOURCES;\r | |
1114 | }\r | |
1115 | \r | |
1116 | Packet->Size = DHCP6_BASE_PACKET_SIZE + UserLen;\r | |
1117 | Packet->Length = sizeof (EFI_DHCP6_HEADER);\r | |
1118 | Packet->Dhcp6.Header.MessageType = Dhcp6MsgRequest;\r | |
1119 | Packet->Dhcp6.Header.TransactionId = Service->Xid++;\r | |
1120 | \r | |
1121 | //\r | |
1122 | // Assembly Dhcp6 options for request message.\r | |
1123 | //\r | |
1124 | Cursor = Packet->Dhcp6.Option;\r | |
1125 | \r | |
1126 | Length = HTONS (ClientId->Length);\r | |
1127 | Cursor = Dhcp6AppendOption (\r | |
1128 | Cursor,\r | |
1129 | HTONS (Dhcp6OptClientId),\r | |
1130 | Length,\r | |
1131 | ClientId->Duid\r | |
1132 | );\r | |
1133 | \r | |
1134 | Cursor = Dhcp6AppendETOption (\r | |
1135 | Cursor,\r | |
1136 | Instance,\r | |
1137 | &Elapsed\r | |
1138 | );\r | |
1139 | \r | |
1140 | Cursor = Dhcp6AppendOption (\r | |
1141 | Cursor,\r | |
1142 | HTONS (Dhcp6OptServerId),\r | |
1143 | ServerId->Length,\r | |
1144 | ServerId->Duid\r | |
1145 | );\r | |
1146 | \r | |
1147 | Cursor = Dhcp6AppendIaOption (\r | |
1148 | Cursor,\r | |
1149 | Instance->IaCb.Ia,\r | |
1150 | Instance->IaCb.T1,\r | |
685e44a5 | 1151 | Instance->IaCb.T2,\r |
1152 | Packet->Dhcp6.Header.MessageType\r | |
a3bcde70 HT |
1153 | );\r |
1154 | \r | |
1155 | //\r | |
1156 | // Append user-defined when configurate Dhcp6 service.\r | |
1157 | //\r | |
1158 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
a3bcde70 | 1159 | UserOpt = Instance->Config->OptionList[Index];\r |
d1050b9d | 1160 | Cursor = Dhcp6AppendOption (\r |
a3bcde70 HT |
1161 | Cursor,\r |
1162 | UserOpt->OpCode,\r | |
1163 | UserOpt->OpLen,\r | |
1164 | UserOpt->Data\r | |
1165 | );\r | |
1166 | }\r | |
1167 | \r | |
1168 | //\r | |
1169 | // Determine the size/length of packet.\r | |
1170 | //\r | |
d1050b9d | 1171 | Packet->Length += (UINT32)(Cursor - Packet->Dhcp6.Option);\r |
a3bcde70 HT |
1172 | ASSERT (Packet->Size > Packet->Length + 8);\r |
1173 | \r | |
1174 | //\r | |
1175 | // Callback to user with the packet to be sent and check the user's feedback.\r | |
1176 | //\r | |
1177 | Status = Dhcp6CallbackUser (Instance, Dhcp6SendRequest, &Packet);\r | |
1178 | \r | |
1179 | if (EFI_ERROR (Status)) {\r | |
1180 | FreePool (Packet);\r | |
1181 | return Status;\r | |
1182 | }\r | |
1183 | \r | |
1184 | //\r | |
1185 | // Send request packet with the state transition from Dhcp6selecting to\r | |
1186 | // Dhcp6requesting.\r | |
1187 | //\r | |
1188 | Instance->IaCb.Ia->State = Dhcp6Requesting;\r | |
685e44a5 | 1189 | //\r |
1190 | // Clear initial time for current transaction.\r | |
1191 | //\r | |
1192 | Instance->StartTime = 0;\r | |
a3bcde70 HT |
1193 | \r |
1194 | Status = Dhcp6TransmitPacket (Instance, Packet, Elapsed);\r | |
1195 | \r | |
1196 | if (EFI_ERROR (Status)) {\r | |
1197 | FreePool (Packet);\r | |
1198 | return Status;\r | |
1199 | }\r | |
1200 | \r | |
1201 | //\r | |
1202 | // Enqueue the sent packet for the retransmission in case reply timeout.\r | |
1203 | //\r | |
1204 | return Dhcp6EnqueueRetry (Instance, Packet, Elapsed, NULL);\r | |
1205 | }\r | |
1206 | \r | |
a3bcde70 HT |
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 | |
d1050b9d MK |
1221 | IN DHCP6_INSTANCE *Instance,\r |
1222 | IN EFI_DHCP6_IA *DecIa\r | |
a3bcde70 HT |
1223 | )\r |
1224 | {\r | |
d1050b9d MK |
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 | |
a3bcde70 HT |
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 | |
d1050b9d | 1262 | ServerId = (EFI_DHCP6_DUID *)(Option + 2);\r |
a3bcde70 HT |
1263 | \r |
1264 | //\r | |
f97117ba | 1265 | // Create the Dhcp6 packet and initialize common fields.\r |
a3bcde70 HT |
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 | |
d1050b9d | 1308 | Packet->Length += (UINT32)(Cursor - Packet->Dhcp6.Option);\r |
a3bcde70 HT |
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 | |
a3bcde70 HT |
1344 | /**\r |
1345 | Create the release message and send it.\r | |
1346 | \r | |
1347 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1348 | @param[in] RelIa The pointer to the release Ia.\r | |
1349 | \r | |
1350 | @retval EFI_SUCCESS Created and sent the release message successfully.\r | |
1351 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1352 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
1353 | @retval Others Failed to send the release message.\r | |
1354 | \r | |
1355 | **/\r | |
1356 | EFI_STATUS\r | |
1357 | Dhcp6SendReleaseMsg (\r | |
d1050b9d MK |
1358 | IN DHCP6_INSTANCE *Instance,\r |
1359 | IN EFI_DHCP6_IA *RelIa\r | |
a3bcde70 HT |
1360 | )\r |
1361 | {\r | |
d1050b9d MK |
1362 | EFI_STATUS Status;\r |
1363 | EFI_DHCP6_PACKET *Packet;\r | |
1364 | EFI_DHCP6_PACKET *LastReply;\r | |
1365 | EFI_DHCP6_DUID *ClientId;\r | |
1366 | EFI_DHCP6_DUID *ServerId;\r | |
1367 | DHCP6_SERVICE *Service;\r | |
1368 | UINT8 *Option;\r | |
1369 | UINT8 *Cursor;\r | |
1370 | UINT16 *Elapsed;\r | |
1371 | UINT16 Length;\r | |
1372 | \r | |
1373 | ASSERT (Instance->Config);\r | |
1374 | ASSERT (Instance->IaCb.Ia);\r | |
a3bcde70 HT |
1375 | \r |
1376 | Service = Instance->Service;\r | |
1377 | ClientId = Service->ClientId;\r | |
1378 | LastReply = Instance->IaCb.Ia->ReplyPacket;\r | |
1379 | \r | |
d1050b9d MK |
1380 | ASSERT (ClientId);\r |
1381 | ASSERT (LastReply);\r | |
a3bcde70 HT |
1382 | \r |
1383 | //\r | |
1384 | // Get the server Id from the last reply message.\r | |
1385 | //\r | |
1386 | Option = Dhcp6SeekOption (\r | |
1387 | LastReply->Dhcp6.Option,\r | |
1388 | LastReply->Length - 4,\r | |
1389 | Dhcp6OptServerId\r | |
1390 | );\r | |
1391 | if (Option == NULL) {\r | |
1392 | return EFI_DEVICE_ERROR;\r | |
1393 | }\r | |
1394 | \r | |
d1050b9d | 1395 | ServerId = (EFI_DHCP6_DUID *)(Option + 2);\r |
a3bcde70 HT |
1396 | \r |
1397 | //\r | |
f97117ba | 1398 | // Create the Dhcp6 packet and initialize common fields.\r |
a3bcde70 HT |
1399 | //\r |
1400 | Packet = AllocateZeroPool (DHCP6_BASE_PACKET_SIZE);\r | |
1401 | if (Packet == NULL) {\r | |
1402 | return EFI_OUT_OF_RESOURCES;\r | |
1403 | }\r | |
1404 | \r | |
1405 | Packet->Size = DHCP6_BASE_PACKET_SIZE;\r | |
1406 | Packet->Length = sizeof (EFI_DHCP6_HEADER);\r | |
1407 | Packet->Dhcp6.Header.MessageType = Dhcp6MsgRelease;\r | |
1408 | Packet->Dhcp6.Header.TransactionId = Service->Xid++;\r | |
1409 | \r | |
1410 | //\r | |
1411 | // Assembly Dhcp6 options for rebind/renew message\r | |
1412 | //\r | |
1413 | Cursor = Packet->Dhcp6.Option;\r | |
1414 | \r | |
1415 | Length = HTONS (ClientId->Length);\r | |
1416 | Cursor = Dhcp6AppendOption (\r | |
1417 | Cursor,\r | |
1418 | HTONS (Dhcp6OptClientId),\r | |
1419 | Length,\r | |
1420 | ClientId->Duid\r | |
1421 | );\r | |
1422 | \r | |
1423 | //\r | |
1424 | // ServerId is extracted from packet, it's network order.\r | |
1425 | //\r | |
1426 | Cursor = Dhcp6AppendOption (\r | |
1427 | Cursor,\r | |
1428 | HTONS (Dhcp6OptServerId),\r | |
1429 | ServerId->Length,\r | |
1430 | ServerId->Duid\r | |
1431 | );\r | |
1432 | \r | |
1433 | Cursor = Dhcp6AppendETOption (\r | |
1434 | Cursor,\r | |
1435 | Instance,\r | |
1436 | &Elapsed\r | |
1437 | );\r | |
1438 | \r | |
685e44a5 | 1439 | Cursor = Dhcp6AppendIaOption (Cursor, RelIa, 0, 0, Packet->Dhcp6.Header.MessageType);\r |
a3bcde70 HT |
1440 | \r |
1441 | //\r | |
1442 | // Determine the size/length of packet\r | |
1443 | //\r | |
d1050b9d | 1444 | Packet->Length += (UINT32)(Cursor - Packet->Dhcp6.Option);\r |
a3bcde70 HT |
1445 | ASSERT (Packet->Size > Packet->Length + 8);\r |
1446 | \r | |
1447 | //\r | |
1448 | // Callback to user with the packet to be sent and check the user's feedback.\r | |
1449 | //\r | |
1450 | Status = Dhcp6CallbackUser (Instance, Dhcp6SendRelease, &Packet);\r | |
1451 | \r | |
1452 | if (EFI_ERROR (Status)) {\r | |
1453 | FreePool (Packet);\r | |
1454 | return Status;\r | |
1455 | }\r | |
1456 | \r | |
1457 | //\r | |
1458 | // Send release packet with the state transition from Dhcp6bound to\r | |
1459 | // Dhcp6releasing.\r | |
1460 | //\r | |
1461 | Instance->IaCb.Ia->State = Dhcp6Releasing;\r | |
1462 | \r | |
1463 | Status = Dhcp6TransmitPacket (Instance, Packet, Elapsed);\r | |
1464 | \r | |
1465 | if (EFI_ERROR (Status)) {\r | |
1466 | FreePool (Packet);\r | |
1467 | return Status;\r | |
1468 | }\r | |
1469 | \r | |
1470 | //\r | |
1471 | // Enqueue the sent packet for the retransmission in case reply timeout.\r | |
1472 | //\r | |
1473 | return Dhcp6EnqueueRetry (Instance, Packet, Elapsed, NULL);\r | |
1474 | }\r | |
1475 | \r | |
a3bcde70 HT |
1476 | /**\r |
1477 | Create the renew/rebind message and send it.\r | |
1478 | \r | |
1479 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1480 | @param[in] RebindRequest If TRUE, it is a Rebind type message.\r | |
1481 | Otherwise, it is a Renew type message.\r | |
1482 | \r | |
1483 | @retval EFI_SUCCESS Created and sent the renew/rebind message successfully.\r | |
1484 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1485 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
1486 | @retval Others Failed to send the renew/rebind message.\r | |
1487 | \r | |
1488 | **/\r | |
1489 | EFI_STATUS\r | |
1490 | Dhcp6SendRenewRebindMsg (\r | |
d1050b9d MK |
1491 | IN DHCP6_INSTANCE *Instance,\r |
1492 | IN BOOLEAN RebindRequest\r | |
a3bcde70 HT |
1493 | )\r |
1494 | {\r | |
d1050b9d MK |
1495 | EFI_STATUS Status;\r |
1496 | EFI_DHCP6_PACKET *Packet;\r | |
1497 | EFI_DHCP6_PACKET *LastReply;\r | |
1498 | EFI_DHCP6_PACKET_OPTION *UserOpt;\r | |
1499 | EFI_DHCP6_DUID *ClientId;\r | |
1500 | EFI_DHCP6_DUID *ServerId;\r | |
1501 | EFI_DHCP6_STATE State;\r | |
1502 | EFI_DHCP6_EVENT Event;\r | |
1503 | DHCP6_SERVICE *Service;\r | |
1504 | UINT8 *Option;\r | |
1505 | UINT8 *Cursor;\r | |
1506 | UINT16 *Elapsed;\r | |
1507 | UINT32 UserLen;\r | |
1508 | UINTN Index;\r | |
1509 | UINT16 Length;\r | |
a3bcde70 | 1510 | \r |
d1050b9d MK |
1511 | ASSERT (Instance->Config);\r |
1512 | ASSERT (Instance->IaCb.Ia);\r | |
a3bcde70 | 1513 | \r |
d1050b9d MK |
1514 | Service = Instance->Service;\r |
1515 | ClientId = Service->ClientId;\r | |
1516 | \r | |
1517 | ASSERT (ClientId);\r | |
a3bcde70 HT |
1518 | \r |
1519 | //\r | |
1520 | // Calculate the added length of customized option list.\r | |
1521 | //\r | |
1522 | UserLen = 0;\r | |
1523 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
1524 | UserLen += (NTOHS (Instance->Config->OptionList[Index]->OpLen) + 4);\r | |
1525 | }\r | |
1526 | \r | |
1527 | //\r | |
f97117ba | 1528 | // Create the Dhcp6 packet and initialize common fields.\r |
a3bcde70 HT |
1529 | //\r |
1530 | Packet = AllocateZeroPool (DHCP6_BASE_PACKET_SIZE + UserLen);\r | |
1531 | if (Packet == NULL) {\r | |
1532 | return EFI_OUT_OF_RESOURCES;\r | |
1533 | }\r | |
1534 | \r | |
1535 | Packet->Size = DHCP6_BASE_PACKET_SIZE + UserLen;\r | |
1536 | Packet->Length = sizeof (EFI_DHCP6_HEADER);\r | |
1537 | Packet->Dhcp6.Header.MessageType = RebindRequest ? Dhcp6MsgRebind : Dhcp6MsgRenew;\r | |
1538 | Packet->Dhcp6.Header.TransactionId = Service->Xid++;\r | |
1539 | \r | |
1540 | //\r | |
1541 | // Assembly Dhcp6 options for rebind/renew message.\r | |
1542 | //\r | |
1543 | Cursor = Packet->Dhcp6.Option;\r | |
1544 | \r | |
1545 | Length = HTONS (ClientId->Length);\r | |
1546 | Cursor = Dhcp6AppendOption (\r | |
1547 | Cursor,\r | |
1548 | HTONS (Dhcp6OptClientId),\r | |
1549 | Length,\r | |
1550 | ClientId->Duid\r | |
1551 | );\r | |
1552 | \r | |
1553 | Cursor = Dhcp6AppendETOption (\r | |
1554 | Cursor,\r | |
1555 | Instance,\r | |
1556 | &Elapsed\r | |
1557 | );\r | |
1558 | \r | |
1559 | Cursor = Dhcp6AppendIaOption (\r | |
1560 | Cursor,\r | |
1561 | Instance->IaCb.Ia,\r | |
1562 | Instance->IaCb.T1,\r | |
685e44a5 | 1563 | Instance->IaCb.T2,\r |
1564 | Packet->Dhcp6.Header.MessageType\r | |
a3bcde70 HT |
1565 | );\r |
1566 | \r | |
1567 | if (!RebindRequest) {\r | |
1568 | //\r | |
1569 | // Get the server Id from the last reply message and\r | |
1570 | // insert it for rebind request.\r | |
1571 | //\r | |
1572 | LastReply = Instance->IaCb.Ia->ReplyPacket;\r | |
1573 | ASSERT (LastReply);\r | |
1574 | \r | |
1575 | Option = Dhcp6SeekOption (\r | |
1576 | LastReply->Dhcp6.Option,\r | |
1577 | LastReply->Length - 4,\r | |
1578 | Dhcp6OptServerId\r | |
1579 | );\r | |
1580 | if (Option == NULL) {\r | |
1581 | FreePool (Packet);\r | |
1582 | return EFI_DEVICE_ERROR;\r | |
1583 | }\r | |
1584 | \r | |
d1050b9d | 1585 | ServerId = (EFI_DHCP6_DUID *)(Option + 2);\r |
a3bcde70 HT |
1586 | \r |
1587 | Cursor = Dhcp6AppendOption (\r | |
1588 | Cursor,\r | |
1589 | HTONS (Dhcp6OptServerId),\r | |
1590 | ServerId->Length,\r | |
1591 | ServerId->Duid\r | |
1592 | );\r | |
1593 | }\r | |
1594 | \r | |
1595 | //\r | |
1596 | // Append user-defined when configurate Dhcp6 service.\r | |
1597 | //\r | |
1598 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
a3bcde70 | 1599 | UserOpt = Instance->Config->OptionList[Index];\r |
d1050b9d | 1600 | Cursor = Dhcp6AppendOption (\r |
a3bcde70 HT |
1601 | Cursor,\r |
1602 | UserOpt->OpCode,\r | |
1603 | UserOpt->OpLen,\r | |
1604 | UserOpt->Data\r | |
1605 | );\r | |
1606 | }\r | |
1607 | \r | |
1608 | //\r | |
1609 | // Determine the size/length of packet.\r | |
1610 | //\r | |
d1050b9d | 1611 | Packet->Length += (UINT32)(Cursor - Packet->Dhcp6.Option);\r |
a3bcde70 HT |
1612 | ASSERT (Packet->Size > Packet->Length + 8);\r |
1613 | \r | |
1614 | //\r | |
1615 | // Callback to user with the packet to be sent and check the user's feedback.\r | |
1616 | //\r | |
d1050b9d MK |
1617 | State = (RebindRequest) ? Dhcp6Rebinding : Dhcp6Renewing;\r |
1618 | Event = (RebindRequest) ? Dhcp6EnterRebinding : Dhcp6EnterRenewing;\r | |
a3bcde70 HT |
1619 | \r |
1620 | Status = Dhcp6CallbackUser (Instance, Event, &Packet);\r | |
1621 | \r | |
1622 | if (EFI_ERROR (Status)) {\r | |
1623 | FreePool (Packet);\r | |
1624 | return Status;\r | |
1625 | }\r | |
1626 | \r | |
1627 | //\r | |
1628 | // Send renew/rebind packet with the state transition from Dhcp6bound to\r | |
1629 | // Dhcp6renew/rebind.\r | |
1630 | // And sync the lease time when send renew/rebind, in case that user send\r | |
1631 | // renew/rebind actively.\r | |
1632 | //\r | |
1633 | Instance->IaCb.Ia->State = State;\r | |
1634 | Instance->IaCb.LeaseTime = (RebindRequest) ? Instance->IaCb.T2 : Instance->IaCb.T1;\r | |
685e44a5 | 1635 | //\r |
1636 | // Clear initial time for current transaction.\r | |
1637 | //\r | |
1638 | Instance->StartTime = 0;\r | |
a3bcde70 HT |
1639 | \r |
1640 | Status = Dhcp6TransmitPacket (Instance, Packet, Elapsed);\r | |
1641 | \r | |
1642 | if (EFI_ERROR (Status)) {\r | |
1643 | FreePool (Packet);\r | |
1644 | return Status;\r | |
1645 | }\r | |
1646 | \r | |
1647 | //\r | |
1648 | // Enqueue the sent packet for the retransmission in case reply timeout.\r | |
1649 | //\r | |
1650 | return Dhcp6EnqueueRetry (Instance, Packet, Elapsed, NULL);\r | |
1651 | }\r | |
1652 | \r | |
cc658224 | 1653 | /**\r |
1654 | Start the information request process.\r | |
1655 | \r | |
1656 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1657 | @param[in] SendClientId If TRUE, the client identifier option will be included in\r | |
1658 | information request message. Otherwise, the client identifier\r | |
1659 | option will not be included.\r | |
1660 | @param[in] OptionRequest The pointer to the option request option.\r | |
1661 | @param[in] OptionCount The number options in the OptionList.\r | |
1662 | @param[in] OptionList The array pointers to the appended options.\r | |
1663 | @param[in] Retransmission The pointer to the retransmission control.\r | |
1664 | @param[in] TimeoutEvent The event of timeout.\r | |
1665 | @param[in] ReplyCallback The callback function when the reply was received.\r | |
1666 | @param[in] CallbackContext The pointer to the parameter passed to the callback.\r | |
1667 | \r | |
1668 | @retval EFI_SUCCESS Start the info-request process successfully.\r | |
1669 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1670 | @retval EFI_NO_MAPPING No source address is available for use.\r | |
1671 | @retval Others Failed to start the info-request process.\r | |
1672 | \r | |
1673 | **/\r | |
1674 | EFI_STATUS\r | |
1675 | Dhcp6StartInfoRequest (\r | |
1676 | IN DHCP6_INSTANCE *Instance,\r | |
1677 | IN BOOLEAN SendClientId,\r | |
1678 | IN EFI_DHCP6_PACKET_OPTION *OptionRequest,\r | |
1679 | IN UINT32 OptionCount,\r | |
1680 | IN EFI_DHCP6_PACKET_OPTION *OptionList[] OPTIONAL,\r | |
1681 | IN EFI_DHCP6_RETRANSMISSION *Retransmission,\r | |
1682 | IN EFI_EVENT TimeoutEvent OPTIONAL,\r | |
1683 | IN EFI_DHCP6_INFO_CALLBACK ReplyCallback,\r | |
1684 | IN VOID *CallbackContext OPTIONAL\r | |
1685 | )\r | |
1686 | {\r | |
d1050b9d MK |
1687 | EFI_STATUS Status;\r |
1688 | DHCP6_INF_CB *InfCb;\r | |
1689 | DHCP6_SERVICE *Service;\r | |
1690 | EFI_TPL OldTpl;\r | |
cc658224 | 1691 | \r |
d1050b9d | 1692 | Service = Instance->Service;\r |
cc658224 | 1693 | \r |
d1050b9d | 1694 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
cc658224 | 1695 | Instance->UdpSts = EFI_ALREADY_STARTED;\r |
1696 | //\r | |
1697 | // Create and initialize the control block for the info-request.\r | |
1698 | //\r | |
d1050b9d | 1699 | InfCb = AllocateZeroPool (sizeof (DHCP6_INF_CB));\r |
cc658224 | 1700 | \r |
1701 | if (InfCb == NULL) {\r | |
1702 | gBS->RestoreTPL (OldTpl);\r | |
1703 | return EFI_OUT_OF_RESOURCES;\r | |
1704 | }\r | |
1705 | \r | |
1706 | InfCb->ReplyCallback = ReplyCallback;\r | |
1707 | InfCb->CallbackContext = CallbackContext;\r | |
1708 | InfCb->TimeoutEvent = TimeoutEvent;\r | |
1709 | \r | |
1710 | InsertTailList (&Instance->InfList, &InfCb->Link);\r | |
1711 | \r | |
1712 | //\r | |
1713 | // Send the info-request message to start exchange process.\r | |
1714 | //\r | |
1715 | Status = Dhcp6SendInfoRequestMsg (\r | |
1716 | Instance,\r | |
1717 | InfCb,\r | |
1718 | SendClientId,\r | |
1719 | OptionRequest,\r | |
1720 | OptionCount,\r | |
1721 | OptionList,\r | |
1722 | Retransmission\r | |
1723 | );\r | |
1724 | \r | |
1725 | if (EFI_ERROR (Status)) {\r | |
1726 | goto ON_ERROR;\r | |
1727 | }\r | |
1728 | \r | |
1729 | //\r | |
1730 | // Register receive callback for the stateless exchange process.\r | |
1731 | //\r | |
d1050b9d | 1732 | Status = UdpIoRecvDatagram (\r |
cc658224 | 1733 | Service->UdpIo,\r |
1734 | Dhcp6ReceivePacket,\r | |
1735 | Service,\r | |
1736 | 0\r | |
1737 | );\r | |
1738 | \r | |
1739 | if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {\r | |
1740 | goto ON_ERROR;\r | |
1741 | }\r | |
f75a7f56 | 1742 | \r |
cc658224 | 1743 | gBS->RestoreTPL (OldTpl);\r |
1744 | return EFI_SUCCESS;\r | |
f75a7f56 | 1745 | \r |
cc658224 | 1746 | ON_ERROR:\r |
f75a7f56 | 1747 | gBS->RestoreTPL (OldTpl);\r |
cc658224 | 1748 | RemoveEntryList (&InfCb->Link);\r |
1749 | FreePool (InfCb);\r | |
1750 | \r | |
1751 | return Status;\r | |
1752 | }\r | |
a3bcde70 HT |
1753 | \r |
1754 | /**\r | |
1755 | Create the information request message and send it.\r | |
1756 | \r | |
1757 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1758 | @param[in] InfCb The pointer to the information request control block.\r | |
1759 | @param[in] SendClientId If TRUE, the client identifier option will be included in\r | |
1760 | information request message. Otherwise, the client identifier\r | |
1761 | option will not be included.\r | |
1762 | @param[in] OptionRequest The pointer to the option request option.\r | |
1763 | @param[in] OptionCount The number options in the OptionList.\r | |
1764 | @param[in] OptionList The array pointers to the appended options.\r | |
1765 | @param[in] Retransmission The pointer to the retransmission control.\r | |
1766 | \r | |
1767 | @retval EFI_SUCCESS Created and sent the info-request message successfully.\r | |
1768 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1769 | @retval Others Failed to send the info-request message.\r | |
1770 | \r | |
1771 | **/\r | |
1772 | EFI_STATUS\r | |
1773 | Dhcp6SendInfoRequestMsg (\r | |
1774 | IN DHCP6_INSTANCE *Instance,\r | |
1775 | IN DHCP6_INF_CB *InfCb,\r | |
1776 | IN BOOLEAN SendClientId,\r | |
1777 | IN EFI_DHCP6_PACKET_OPTION *OptionRequest,\r | |
1778 | IN UINT32 OptionCount,\r | |
1779 | IN EFI_DHCP6_PACKET_OPTION *OptionList[],\r | |
1780 | IN EFI_DHCP6_RETRANSMISSION *Retransmission\r | |
1781 | )\r | |
1782 | {\r | |
d1050b9d MK |
1783 | EFI_STATUS Status;\r |
1784 | EFI_DHCP6_PACKET *Packet;\r | |
1785 | EFI_DHCP6_PACKET_OPTION *UserOpt;\r | |
1786 | EFI_DHCP6_DUID *ClientId;\r | |
1787 | DHCP6_SERVICE *Service;\r | |
1788 | UINT8 *Cursor;\r | |
1789 | UINT16 *Elapsed;\r | |
1790 | UINT32 UserLen;\r | |
1791 | UINTN Index;\r | |
1792 | UINT16 Length;\r | |
1793 | \r | |
1794 | ASSERT (OptionRequest);\r | |
a3bcde70 HT |
1795 | \r |
1796 | Service = Instance->Service;\r | |
1797 | ClientId = Service->ClientId;\r | |
1798 | UserLen = NTOHS (OptionRequest->OpLen) + 4;\r | |
1799 | \r | |
d1050b9d | 1800 | ASSERT (ClientId);\r |
a3bcde70 HT |
1801 | \r |
1802 | //\r | |
1803 | // Calculate the added length of customized option list.\r | |
1804 | //\r | |
1805 | for (Index = 0; Index < OptionCount; Index++) {\r | |
1806 | UserLen += (NTOHS (OptionList[Index]->OpLen) + 4);\r | |
1807 | }\r | |
1808 | \r | |
1809 | //\r | |
f97117ba | 1810 | // Create the Dhcp6 packet and initialize common fields.\r |
a3bcde70 HT |
1811 | //\r |
1812 | Packet = AllocateZeroPool (DHCP6_BASE_PACKET_SIZE + UserLen);\r | |
1813 | if (Packet == NULL) {\r | |
1814 | return EFI_OUT_OF_RESOURCES;\r | |
1815 | }\r | |
1816 | \r | |
1817 | Packet->Size = DHCP6_BASE_PACKET_SIZE + UserLen;\r | |
1818 | Packet->Length = sizeof (EFI_DHCP6_HEADER);\r | |
1819 | Packet->Dhcp6.Header.MessageType = Dhcp6MsgInfoRequest;\r | |
1820 | Packet->Dhcp6.Header.TransactionId = Service->Xid++;\r | |
1821 | \r | |
d1050b9d | 1822 | InfCb->Xid = Packet->Dhcp6.Header.TransactionId;\r |
a3bcde70 HT |
1823 | \r |
1824 | //\r | |
1825 | // Assembly Dhcp6 options for info-request message.\r | |
1826 | //\r | |
1827 | Cursor = Packet->Dhcp6.Option;\r | |
1828 | \r | |
1829 | if (SendClientId) {\r | |
1830 | Length = HTONS (ClientId->Length);\r | |
1831 | Cursor = Dhcp6AppendOption (\r | |
1832 | Cursor,\r | |
1833 | HTONS (Dhcp6OptClientId),\r | |
1834 | Length,\r | |
1835 | ClientId->Duid\r | |
1836 | );\r | |
1837 | }\r | |
1838 | \r | |
1839 | Cursor = Dhcp6AppendETOption (\r | |
1840 | Cursor,\r | |
1841 | Instance,\r | |
1842 | &Elapsed\r | |
1843 | );\r | |
1844 | \r | |
1845 | Cursor = Dhcp6AppendOption (\r | |
1846 | Cursor,\r | |
1847 | OptionRequest->OpCode,\r | |
1848 | OptionRequest->OpLen,\r | |
1849 | OptionRequest->Data\r | |
1850 | );\r | |
1851 | \r | |
1852 | //\r | |
1853 | // Append user-defined when configurate Dhcp6 service.\r | |
1854 | //\r | |
1855 | for (Index = 0; Index < OptionCount; Index++) {\r | |
a3bcde70 | 1856 | UserOpt = OptionList[Index];\r |
d1050b9d | 1857 | Cursor = Dhcp6AppendOption (\r |
a3bcde70 HT |
1858 | Cursor,\r |
1859 | UserOpt->OpCode,\r | |
1860 | UserOpt->OpLen,\r | |
1861 | UserOpt->Data\r | |
1862 | );\r | |
1863 | }\r | |
1864 | \r | |
1865 | //\r | |
1866 | // Determine the size/length of packet.\r | |
1867 | //\r | |
d1050b9d | 1868 | Packet->Length += (UINT32)(Cursor - Packet->Dhcp6.Option);\r |
a3bcde70 | 1869 | ASSERT (Packet->Size > Packet->Length + 8);\r |
f75a7f56 | 1870 | \r |
685e44a5 | 1871 | //\r |
1872 | // Clear initial time for current transaction.\r | |
1873 | //\r | |
1874 | Instance->StartTime = 0;\r | |
a3bcde70 HT |
1875 | \r |
1876 | //\r | |
1877 | // Send info-request packet with no state.\r | |
1878 | //\r | |
1879 | Status = Dhcp6TransmitPacket (Instance, Packet, Elapsed);\r | |
1880 | \r | |
1881 | if (EFI_ERROR (Status)) {\r | |
1882 | FreePool (Packet);\r | |
1883 | return Status;\r | |
1884 | }\r | |
1885 | \r | |
1886 | //\r | |
1887 | // Enqueue the sent packet for the retransmission in case reply timeout.\r | |
1888 | //\r | |
1889 | return Dhcp6EnqueueRetry (Instance, Packet, Elapsed, Retransmission);\r | |
1890 | }\r | |
1891 | \r | |
a3bcde70 HT |
1892 | /**\r |
1893 | Create the Confirm message and send it.\r | |
1894 | \r | |
1895 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
1896 | \r | |
1897 | @retval EFI_SUCCESS Created and sent the confirm message successfully.\r | |
1898 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
1899 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
1900 | @retval Others Failed to send the confirm message.\r | |
1901 | \r | |
1902 | **/\r | |
1903 | EFI_STATUS\r | |
1904 | Dhcp6SendConfirmMsg (\r | |
d1050b9d | 1905 | IN DHCP6_INSTANCE *Instance\r |
a3bcde70 HT |
1906 | )\r |
1907 | {\r | |
d1050b9d MK |
1908 | UINT8 *Cursor;\r |
1909 | UINTN Index;\r | |
1910 | UINT16 Length;\r | |
1911 | UINT32 UserLen;\r | |
1912 | EFI_STATUS Status;\r | |
1913 | DHCP6_SERVICE *Service;\r | |
1914 | EFI_DHCP6_DUID *ClientId;\r | |
1915 | EFI_DHCP6_PACKET *Packet;\r | |
1916 | EFI_DHCP6_PACKET_OPTION *UserOpt;\r | |
1917 | UINT16 *Elapsed;\r | |
a3bcde70 HT |
1918 | \r |
1919 | ASSERT (Instance->Config != NULL);\r | |
1920 | ASSERT (Instance->IaCb.Ia != NULL);\r | |
1921 | ASSERT (Instance->Service != NULL);\r | |
1922 | \r | |
1923 | Service = Instance->Service;\r | |
1924 | ClientId = Service->ClientId;\r | |
1925 | ASSERT (ClientId != NULL);\r | |
1926 | \r | |
1927 | //\r | |
1928 | // Calculate the added length of customized option list.\r | |
1929 | //\r | |
1930 | UserLen = 0;\r | |
1931 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
1932 | UserLen += (NTOHS (Instance->Config->OptionList[Index]->OpLen) + 4);\r | |
1933 | }\r | |
1934 | \r | |
1935 | //\r | |
1936 | // Create the Dhcp6 packet and initialize common fields.\r | |
1937 | //\r | |
1938 | Packet = AllocateZeroPool (DHCP6_BASE_PACKET_SIZE + UserLen);\r | |
1939 | if (Packet == NULL) {\r | |
1940 | return EFI_OUT_OF_RESOURCES;\r | |
1941 | }\r | |
1942 | \r | |
1943 | Packet->Size = DHCP6_BASE_PACKET_SIZE + UserLen;\r | |
1944 | Packet->Length = sizeof (EFI_DHCP6_HEADER);\r | |
1945 | Packet->Dhcp6.Header.MessageType = Dhcp6MsgConfirm;\r | |
1946 | Packet->Dhcp6.Header.TransactionId = Service->Xid++;\r | |
1947 | \r | |
1948 | //\r | |
1949 | // Assembly Dhcp6 options for solicit message.\r | |
1950 | //\r | |
1951 | Cursor = Packet->Dhcp6.Option;\r | |
1952 | \r | |
1953 | Length = HTONS (ClientId->Length);\r | |
1954 | Cursor = Dhcp6AppendOption (\r | |
1955 | Cursor,\r | |
1956 | HTONS (Dhcp6OptClientId),\r | |
1957 | Length,\r | |
1958 | ClientId->Duid\r | |
1959 | );\r | |
1960 | \r | |
1961 | Cursor = Dhcp6AppendETOption (\r | |
1962 | Cursor,\r | |
1963 | Instance,\r | |
1964 | &Elapsed\r | |
1965 | );\r | |
1966 | \r | |
1967 | Cursor = Dhcp6AppendIaOption (\r | |
1968 | Cursor,\r | |
1969 | Instance->IaCb.Ia,\r | |
1970 | Instance->IaCb.T1,\r | |
685e44a5 | 1971 | Instance->IaCb.T2,\r |
1972 | Packet->Dhcp6.Header.MessageType\r | |
a3bcde70 HT |
1973 | );\r |
1974 | \r | |
1975 | //\r | |
1976 | // Append user-defined when configurate Dhcp6 service.\r | |
1977 | //\r | |
1978 | for (Index = 0; Index < Instance->Config->OptionCount; Index++) {\r | |
1979 | UserOpt = Instance->Config->OptionList[Index];\r | |
1980 | Cursor = Dhcp6AppendOption (\r | |
1981 | Cursor,\r | |
1982 | UserOpt->OpCode,\r | |
1983 | UserOpt->OpLen,\r | |
1984 | UserOpt->Data\r | |
1985 | );\r | |
1986 | }\r | |
1987 | \r | |
1988 | //\r | |
1989 | // Determine the size/length of packet.\r | |
1990 | //\r | |
d1050b9d | 1991 | Packet->Length += (UINT32)(Cursor - Packet->Dhcp6.Option);\r |
a3bcde70 HT |
1992 | ASSERT (Packet->Size > Packet->Length + 8);\r |
1993 | \r | |
1994 | //\r | |
1995 | // Callback to user with the packet to be sent and check the user's feedback.\r | |
1996 | //\r | |
1997 | Status = Dhcp6CallbackUser (Instance, Dhcp6SendConfirm, &Packet);\r | |
1998 | \r | |
1999 | if (EFI_ERROR (Status)) {\r | |
2000 | FreePool (Packet);\r | |
2001 | return Status;\r | |
2002 | }\r | |
2003 | \r | |
2004 | //\r | |
2005 | // Send confirm packet with the state transition from Dhcp6Bound to\r | |
2006 | // Dhcp6Confirming.\r | |
2007 | //\r | |
2008 | Instance->IaCb.Ia->State = Dhcp6Confirming;\r | |
685e44a5 | 2009 | //\r |
2010 | // Clear initial time for current transaction.\r | |
2011 | //\r | |
2012 | Instance->StartTime = 0;\r | |
a3bcde70 HT |
2013 | \r |
2014 | Status = Dhcp6TransmitPacket (Instance, Packet, Elapsed);\r | |
2015 | \r | |
2016 | if (EFI_ERROR (Status)) {\r | |
2017 | FreePool (Packet);\r | |
2018 | return Status;\r | |
2019 | }\r | |
2020 | \r | |
2021 | //\r | |
2022 | // Enqueue the sent packet for the retransmission in case reply timeout.\r | |
2023 | //\r | |
2024 | return Dhcp6EnqueueRetry (Instance, Packet, Elapsed, NULL);\r | |
2025 | }\r | |
2026 | \r | |
a3bcde70 HT |
2027 | /**\r |
2028 | Handle with the Dhcp6 reply message.\r | |
2029 | \r | |
2030 | @param[in] Instance The pointer to Dhcp6 instance.\r | |
2031 | @param[in] Packet The pointer to the Dhcp6 reply message.\r | |
2032 | \r | |
2033 | @retval EFI_SUCCESS Processed the reply message successfully.\r | |
2034 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
2035 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
2036 | @retval Others Failed to process the reply message.\r | |
2037 | \r | |
2038 | **/\r | |
2039 | EFI_STATUS\r | |
2040 | Dhcp6HandleReplyMsg (\r | |
d1050b9d MK |
2041 | IN DHCP6_INSTANCE *Instance,\r |
2042 | IN EFI_DHCP6_PACKET *Packet\r | |
a3bcde70 HT |
2043 | )\r |
2044 | {\r | |
d1050b9d MK |
2045 | EFI_STATUS Status;\r |
2046 | UINT8 *Option;\r | |
2047 | UINT16 StsCode;\r | |
a3bcde70 HT |
2048 | \r |
2049 | ASSERT (Instance->Config != NULL);\r | |
2050 | ASSERT (Instance->IaCb.Ia != NULL);\r | |
2051 | ASSERT (Packet != NULL);\r | |
2052 | \r | |
685e44a5 | 2053 | Status = EFI_SUCCESS;\r |
2054 | \r | |
a3bcde70 HT |
2055 | if (Packet->Dhcp6.Header.MessageType != Dhcp6MsgReply) {\r |
2056 | return EFI_DEVICE_ERROR;\r | |
2057 | }\r | |
2058 | \r | |
2059 | //\r | |
2060 | // If the client subsequently receives a valid reply message that includes a\r | |
2061 | // rapid commit option since send a solicit with rapid commit option before,\r | |
2062 | // preocess the reply message and discard any reply messages received in\r | |
2063 | // response to the request message.\r | |
2064 | // See details in the section-17.1.4 of rfc-3315.\r | |
2065 | //\r | |
2066 | Option = Dhcp6SeekOption (\r | |
2067 | Packet->Dhcp6.Option,\r | |
2068 | Packet->Length - 4,\r | |
2069 | Dhcp6OptRapidCommit\r | |
2070 | );\r | |
2071 | \r | |
d1050b9d | 2072 | if (((Option != NULL) && !Instance->Config->RapidCommit) || ((Option == NULL) && Instance->Config->RapidCommit)) {\r |
a3bcde70 HT |
2073 | return EFI_DEVICE_ERROR;\r |
2074 | }\r | |
2075 | \r | |
2076 | //\r | |
2077 | // As to a valid reply packet in response to a request/renew/rebind packet,\r | |
2078 | // ignore the packet if not contains the Ia option\r | |
2079 | //\r | |
d1050b9d MK |
2080 | if ((Instance->IaCb.Ia->State == Dhcp6Requesting) ||\r |
2081 | (Instance->IaCb.Ia->State == Dhcp6Renewing) ||\r | |
2082 | (Instance->IaCb.Ia->State == Dhcp6Rebinding)\r | |
2083 | )\r | |
2084 | {\r | |
a3bcde70 HT |
2085 | Option = Dhcp6SeekIaOption (\r |
2086 | Packet->Dhcp6.Option,\r | |
2087 | Packet->Length,\r | |
2088 | &Instance->Config->IaDescriptor\r | |
2089 | );\r | |
2090 | if (Option == NULL) {\r | |
685e44a5 | 2091 | return EFI_SUCCESS;\r |
a3bcde70 HT |
2092 | }\r |
2093 | }\r | |
2094 | \r | |
2095 | //\r | |
2096 | // Callback to user with the received packet and check the user's feedback.\r | |
2097 | //\r | |
2098 | Status = Dhcp6CallbackUser (Instance, Dhcp6RcvdReply, &Packet);\r | |
2099 | \r | |
2100 | if (EFI_ERROR (Status)) {\r | |
2101 | return Status;\r | |
2102 | }\r | |
2103 | \r | |
a3bcde70 HT |
2104 | //\r |
2105 | // When receive a valid reply packet in response to a decline/release packet,\r | |
2106 | // the client considers the decline/release event completed regardless of the\r | |
2107 | // status code.\r | |
2108 | //\r | |
d1050b9d | 2109 | if ((Instance->IaCb.Ia->State == Dhcp6Declining) || (Instance->IaCb.Ia->State == Dhcp6Releasing)) {\r |
a3bcde70 | 2110 | if (Instance->IaCb.Ia->IaAddressCount != 0) {\r |
d1050b9d | 2111 | Instance->IaCb.Ia->State = Dhcp6Bound;\r |
a3bcde70 HT |
2112 | } else {\r |
2113 | ASSERT (Instance->IaCb.Ia->ReplyPacket);\r | |
2114 | FreePool (Instance->IaCb.Ia->ReplyPacket);\r | |
2115 | Instance->IaCb.Ia->ReplyPacket = NULL;\r | |
2116 | Instance->IaCb.Ia->State = Dhcp6Init;\r | |
2117 | }\r | |
2118 | \r | |
2119 | //\r | |
2120 | // For sync, set the success flag out of polling in decline/release.\r | |
2121 | //\r | |
2122 | Instance->UdpSts = EFI_SUCCESS;\r | |
2123 | \r | |
2124 | //\r | |
f97117ba | 2125 | // For async, signal the Ia event to inform Ia information update.\r |
a3bcde70 HT |
2126 | //\r |
2127 | if (Instance->Config->IaInfoEvent != NULL) {\r | |
2128 | gBS->SignalEvent (Instance->Config->IaInfoEvent);\r | |
2129 | }\r | |
2130 | \r | |
2131 | //\r | |
2132 | // Reset start time for next exchange.\r | |
2133 | //\r | |
d1050b9d | 2134 | Instance->StartTime = 0;\r |
a3bcde70 | 2135 | \r |
685e44a5 | 2136 | Status = EFI_SUCCESS;\r |
2137 | goto ON_EXIT;\r | |
a3bcde70 HT |
2138 | }\r |
2139 | \r | |
2140 | //\r | |
2141 | // Upon the receipt of a valid reply packet in response to a solicit, request,\r | |
2142 | // confirm, renew and rebind, the behavior depends on the status code option.\r | |
2143 | // See the details in the section-18.1.8 of rfc-3315.\r | |
2144 | //\r | |
2145 | Option = NULL;\r | |
2146 | Status = Dhcp6SeekStsOption (\r | |
2147 | Instance,\r | |
2148 | Packet,\r | |
2149 | &Option\r | |
2150 | );\r | |
2151 | \r | |
2152 | if (!EFI_ERROR (Status)) {\r | |
a3bcde70 HT |
2153 | //\r |
2154 | // No status code or no error status code means succeed to reply.\r | |
2155 | //\r | |
2156 | Status = Dhcp6UpdateIaInfo (Instance, Packet);\r | |
685e44a5 | 2157 | if (!EFI_ERROR (Status)) {\r |
2158 | //\r | |
2159 | // Reset start time for next exchange.\r | |
2160 | //\r | |
d1050b9d | 2161 | Instance->StartTime = 0;\r |
a3bcde70 | 2162 | \r |
685e44a5 | 2163 | //\r |
2164 | // Set bound state and store the reply packet.\r | |
2165 | //\r | |
2166 | if (Instance->IaCb.Ia->ReplyPacket != NULL) {\r | |
2167 | FreePool (Instance->IaCb.Ia->ReplyPacket);\r | |
2168 | }\r | |
a3bcde70 | 2169 | \r |
685e44a5 | 2170 | Instance->IaCb.Ia->ReplyPacket = AllocateZeroPool (Packet->Size);\r |
a3bcde70 | 2171 | \r |
685e44a5 | 2172 | if (Instance->IaCb.Ia->ReplyPacket == NULL) {\r |
2173 | Status = EFI_OUT_OF_RESOURCES;\r | |
2174 | goto ON_EXIT;\r | |
2175 | }\r | |
a3bcde70 | 2176 | \r |
685e44a5 | 2177 | CopyMem (Instance->IaCb.Ia->ReplyPacket, Packet, Packet->Size);\r |
a3bcde70 | 2178 | \r |
685e44a5 | 2179 | Instance->IaCb.Ia->State = Dhcp6Bound;\r |
a3bcde70 | 2180 | \r |
685e44a5 | 2181 | //\r |
2182 | // For sync, set the success flag out of polling in start/renewrebind.\r | |
2183 | //\r | |
d1050b9d | 2184 | Instance->UdpSts = EFI_SUCCESS;\r |
a3bcde70 | 2185 | \r |
685e44a5 | 2186 | //\r |
2187 | // Maybe this is a new round DHCP process due to some reason, such as NotOnLink\r | |
f97117ba | 2188 | // ReplyMsg for ConfirmMsg should trigger new round to acquire new address. In that\r |
685e44a5 | 2189 | // case, clear old address.ValidLifetime and append to new address. Therefore, DHCP\r |
2190 | // consumers can be notified to flush old address.\r | |
2191 | //\r | |
2192 | Dhcp6AppendCacheIa (Instance);\r | |
a3bcde70 | 2193 | \r |
685e44a5 | 2194 | //\r |
f97117ba | 2195 | // For async, signal the Ia event to inform Ia information update.\r |
685e44a5 | 2196 | //\r |
2197 | if (Instance->Config->IaInfoEvent != NULL) {\r | |
2198 | gBS->SignalEvent (Instance->Config->IaInfoEvent);\r | |
2199 | }\r | |
2200 | } else if (Status == EFI_NOT_FOUND) {\r | |
2201 | //\r | |
f75a7f56 | 2202 | // Refer to RFC3315 Chapter 18.1.8, for each IA in the original Renew or Rebind message,\r |
685e44a5 | 2203 | // the client sends a Renew or Rebind if the IA is not in the Reply message.\r |
2204 | // Return EFI_SUCCESS so we can continue to restart the Renew/Rebind process.\r | |
2205 | //\r | |
2206 | return EFI_SUCCESS;\r | |
a3bcde70 | 2207 | }\r |
f75a7f56 | 2208 | \r |
685e44a5 | 2209 | goto ON_EXIT;\r |
a3bcde70 HT |
2210 | } else if (Option != NULL) {\r |
2211 | //\r | |
2212 | // Any error status code option is found.\r | |
2213 | //\r | |
d1050b9d | 2214 | StsCode = NTOHS (ReadUnaligned16 ((UINT16 *)(Option + 4)));\r |
a3bcde70 | 2215 | switch (StsCode) {\r |
d1050b9d | 2216 | case Dhcp6StsUnspecFail:\r |
a3bcde70 | 2217 | //\r |
d1050b9d MK |
2218 | // It indicates the server is unable to process the message due to an\r |
2219 | // unspecified failure condition, so just retry if possible.\r | |
a3bcde70 | 2220 | //\r |
d1050b9d | 2221 | break;\r |
a3bcde70 | 2222 | \r |
d1050b9d | 2223 | case Dhcp6StsUseMulticast:\r |
a3bcde70 | 2224 | //\r |
d1050b9d MK |
2225 | // It indicates the server receives a message via unicast from a client\r |
2226 | // to which the server has not sent a unicast option, so retry it by\r | |
2227 | // multi-cast address.\r | |
a3bcde70 | 2228 | //\r |
d1050b9d MK |
2229 | if (Instance->Unicast != NULL) {\r |
2230 | FreePool (Instance->Unicast);\r | |
2231 | Instance->Unicast = NULL;\r | |
a3bcde70 | 2232 | }\r |
a3bcde70 | 2233 | \r |
d1050b9d MK |
2234 | break;\r |
2235 | \r | |
2236 | case Dhcp6StsNotOnLink:\r | |
2237 | if (Instance->IaCb.Ia->State == Dhcp6Confirming) {\r | |
2238 | //\r | |
2239 | // Before initiate new round DHCP, cache the current IA.\r | |
2240 | //\r | |
2241 | Status = Dhcp6CacheIa (Instance);\r | |
2242 | if (EFI_ERROR (Status)) {\r | |
2243 | return Status;\r | |
2244 | }\r | |
2245 | \r | |
2246 | //\r | |
2247 | // Restart S.A.R.R process to acquire new address.\r | |
2248 | //\r | |
2249 | Status = Dhcp6InitSolicitMsg (Instance);\r | |
2250 | if (EFI_ERROR (Status)) {\r | |
2251 | return Status;\r | |
2252 | }\r | |
685e44a5 | 2253 | }\r |
685e44a5 | 2254 | \r |
d1050b9d MK |
2255 | break;\r |
2256 | \r | |
2257 | case Dhcp6StsNoBinding:\r | |
2258 | if ((Instance->IaCb.Ia->State == Dhcp6Renewing) || (Instance->IaCb.Ia->State == Dhcp6Rebinding)) {\r | |
2259 | //\r | |
2260 | // Refer to RFC3315 Chapter 18.1.8, for each IA in the original Renew or Rebind message, the client\r | |
2261 | // sends a Request message if the IA contained a Status Code option with the NoBinding status.\r | |
2262 | //\r | |
2263 | Status = Dhcp6SendRequestMsg (Instance);\r | |
2264 | if (EFI_ERROR (Status)) {\r | |
2265 | return Status;\r | |
2266 | }\r | |
2267 | }\r | |
2268 | \r | |
2269 | break;\r | |
2270 | \r | |
2271 | default:\r | |
2272 | //\r | |
2273 | // The other status code, just restart solicitation.\r | |
2274 | //\r | |
2275 | break;\r | |
a3bcde70 HT |
2276 | }\r |
2277 | }\r | |
2278 | \r | |
2279 | return EFI_SUCCESS;\r | |
f75a7f56 | 2280 | \r |
685e44a5 | 2281 | ON_EXIT:\r |
2282 | \r | |
d1050b9d | 2283 | if (!EFI_ERROR (Status)) {\r |
685e44a5 | 2284 | Status = Dhcp6DequeueRetry (\r |
2285 | Instance,\r | |
2286 | Packet->Dhcp6.Header.TransactionId,\r | |
2287 | FALSE\r | |
2288 | );\r | |
2289 | }\r | |
f75a7f56 | 2290 | \r |
685e44a5 | 2291 | return Status;\r |
a3bcde70 HT |
2292 | }\r |
2293 | \r | |
a3bcde70 HT |
2294 | /**\r |
2295 | Select the appointed Dhcp6 advertisement message.\r | |
2296 | \r | |
2297 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
2298 | @param[in] AdSelect The pointer to the selected Dhcp6 advertisement message.\r | |
2299 | \r | |
2300 | @retval EFI_SUCCESS Selected the right advertisement message successfully.\r | |
2301 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
2302 | @retval Others Failed to select the advertise message.\r | |
2303 | \r | |
2304 | **/\r | |
2305 | EFI_STATUS\r | |
2306 | Dhcp6SelectAdvertiseMsg (\r | |
d1050b9d MK |
2307 | IN DHCP6_INSTANCE *Instance,\r |
2308 | IN EFI_DHCP6_PACKET *AdSelect\r | |
a3bcde70 HT |
2309 | )\r |
2310 | {\r | |
d1050b9d MK |
2311 | EFI_STATUS Status;\r |
2312 | UINT8 *Option;\r | |
a3bcde70 HT |
2313 | \r |
2314 | ASSERT (AdSelect != NULL);\r | |
2315 | \r | |
2316 | //\r | |
2317 | // Callback to user with the selected advertisement packet, and the user\r | |
2318 | // might overwrite it.\r | |
2319 | //\r | |
2320 | Status = Dhcp6CallbackUser (Instance, Dhcp6SelectAdvertise, &AdSelect);\r | |
2321 | \r | |
2322 | if (EFI_ERROR (Status)) {\r | |
2323 | return Status;\r | |
2324 | }\r | |
2325 | \r | |
2326 | Instance->AdSelect = AdSelect;\r | |
2327 | \r | |
2328 | //\r | |
2329 | // Dequeue the sent packet for the retransmission since advertisement selected.\r | |
2330 | //\r | |
2331 | Status = Dhcp6DequeueRetry (\r | |
2332 | Instance,\r | |
2333 | AdSelect->Dhcp6.Header.TransactionId,\r | |
2334 | FALSE\r | |
2335 | );\r | |
2336 | \r | |
d1050b9d | 2337 | if (EFI_ERROR (Status)) {\r |
a3bcde70 HT |
2338 | return Status;\r |
2339 | }\r | |
2340 | \r | |
2341 | //\r | |
2342 | // Check whether there is server unicast option in the selected advertise\r | |
2343 | // packet, and update it.\r | |
2344 | //\r | |
d1050b9d | 2345 | Option = Dhcp6SeekOption (\r |
a3bcde70 HT |
2346 | AdSelect->Dhcp6.Option,\r |
2347 | AdSelect->Length - 4,\r | |
2348 | Dhcp6OptServerUnicast\r | |
2349 | );\r | |
2350 | \r | |
2351 | if (Option != NULL) {\r | |
d1050b9d | 2352 | Instance->Unicast = AllocateZeroPool (sizeof (EFI_IPv6_ADDRESS));\r |
a3bcde70 HT |
2353 | \r |
2354 | if (Instance->Unicast == NULL) {\r | |
2355 | return EFI_OUT_OF_RESOURCES;\r | |
2356 | }\r | |
2357 | \r | |
d1050b9d | 2358 | CopyMem (Instance->Unicast, Option + 4, sizeof (EFI_IPv6_ADDRESS));\r |
a3bcde70 HT |
2359 | }\r |
2360 | \r | |
2361 | //\r | |
2362 | // Update the information of the Ia by the selected advertisement message.\r | |
2363 | //\r | |
2364 | Status = Dhcp6UpdateIaInfo (Instance, AdSelect);\r | |
2365 | \r | |
2366 | if (EFI_ERROR (Status)) {\r | |
2367 | return Status;\r | |
2368 | }\r | |
2369 | \r | |
2370 | //\r | |
2371 | // Send the request message to continue the S.A.R.R. process.\r | |
2372 | //\r | |
2373 | return Dhcp6SendRequestMsg (Instance);\r | |
2374 | }\r | |
2375 | \r | |
a3bcde70 HT |
2376 | /**\r |
2377 | Handle with the Dhcp6 advertisement message.\r | |
2378 | \r | |
2379 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
2380 | @param[in] Packet The pointer to the Dhcp6 advertisement message.\r | |
2381 | \r | |
2382 | @retval EFI_SUCCESS Processed the advertisement message successfully.\r | |
2383 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
2384 | @retval EFI_DEVICE_ERROR An unexpected error.\r | |
2385 | @retval Others Failed to process the advertise message.\r | |
2386 | \r | |
2387 | **/\r | |
2388 | EFI_STATUS\r | |
2389 | Dhcp6HandleAdvertiseMsg (\r | |
d1050b9d MK |
2390 | IN DHCP6_INSTANCE *Instance,\r |
2391 | IN EFI_DHCP6_PACKET *Packet\r | |
a3bcde70 HT |
2392 | )\r |
2393 | {\r | |
d1050b9d MK |
2394 | EFI_STATUS Status;\r |
2395 | UINT8 *Option;\r | |
2396 | BOOLEAN Timeout;\r | |
a3bcde70 | 2397 | \r |
d1050b9d MK |
2398 | ASSERT (Instance->Config);\r |
2399 | ASSERT (Instance->IaCb.Ia);\r | |
a3bcde70 HT |
2400 | \r |
2401 | Timeout = FALSE;\r | |
a3bcde70 HT |
2402 | \r |
2403 | //\r | |
2404 | // If the client does receives a valid reply message that includes a rapid\r | |
f97117ba | 2405 | // commit option since a solicit with rapid commit option sent before, select\r |
a3bcde70 HT |
2406 | // this reply message. Or else, process the advertise messages as normal.\r |
2407 | // See details in the section-17.1.4 of rfc-3315.\r | |
2408 | //\r | |
d1050b9d | 2409 | Option = Dhcp6SeekOption (\r |
a3bcde70 HT |
2410 | Packet->Dhcp6.Option,\r |
2411 | Packet->Length - 4,\r | |
2412 | Dhcp6OptRapidCommit\r | |
2413 | );\r | |
2414 | \r | |
d1050b9d | 2415 | if ((Option != NULL) && Instance->Config->RapidCommit && (Packet->Dhcp6.Header.MessageType == Dhcp6MsgReply)) {\r |
a3bcde70 HT |
2416 | return Dhcp6HandleReplyMsg (Instance, Packet);\r |
2417 | }\r | |
2418 | \r | |
2419 | if (Packet->Dhcp6.Header.MessageType != Dhcp6MsgAdvertise) {\r | |
2420 | return EFI_DEVICE_ERROR;\r | |
2421 | }\r | |
2422 | \r | |
2423 | //\r | |
2424 | // Client must ignore any advertise message that includes a status code option\r | |
2425 | // containing the value noaddrsavail, with the exception that the client may\r | |
2426 | // display the associated status message to the user.\r | |
2427 | // See the details in the section-17.1.3 of rfc-3315.\r | |
2428 | //\r | |
685e44a5 | 2429 | Status = Dhcp6SeekStsOption (\r |
2430 | Instance,\r | |
2431 | Packet,\r | |
2432 | &Option\r | |
a3bcde70 | 2433 | );\r |
685e44a5 | 2434 | if (EFI_ERROR (Status)) {\r |
2435 | return EFI_DEVICE_ERROR;\r | |
a3bcde70 HT |
2436 | }\r |
2437 | \r | |
2438 | //\r | |
2439 | // Callback to user with the received packet and check the user's feedback.\r | |
2440 | //\r | |
2441 | Status = Dhcp6CallbackUser (Instance, Dhcp6RcvdAdvertise, &Packet);\r | |
2442 | \r | |
2443 | if (!EFI_ERROR (Status)) {\r | |
2444 | //\r | |
2445 | // Success means user choose the current advertisement packet.\r | |
2446 | //\r | |
2447 | if (Instance->AdSelect != NULL) {\r | |
2448 | FreePool (Instance->AdSelect);\r | |
2449 | }\r | |
2450 | \r | |
2451 | //\r | |
2452 | // Store the selected advertisement packet and set a flag.\r | |
2453 | //\r | |
2454 | Instance->AdSelect = AllocateZeroPool (Packet->Size);\r | |
2455 | \r | |
2456 | if (Instance->AdSelect == NULL) {\r | |
2457 | return EFI_OUT_OF_RESOURCES;\r | |
2458 | }\r | |
2459 | \r | |
2460 | CopyMem (Instance->AdSelect, Packet, Packet->Size);\r | |
2461 | \r | |
2462 | Instance->AdPref = 0xff;\r | |
a3bcde70 HT |
2463 | } else if (Status == EFI_NOT_READY) {\r |
2464 | //\r | |
2465 | // Not_ready means user wants to continue to receive more advertise packets.\r | |
2466 | //\r | |
d1050b9d | 2467 | if ((Instance->AdPref == 0xff) && (Instance->AdSelect == NULL)) {\r |
a3bcde70 HT |
2468 | //\r |
2469 | // It's a tricky point. The timer routine set adpref as 0xff if the first\r | |
2470 | // rt timeout and no advertisement received, which means any advertisement\r | |
2471 | // received will be selected after the first rt.\r | |
2472 | //\r | |
2473 | Timeout = TRUE;\r | |
2474 | }\r | |
2475 | \r | |
2476 | //\r | |
2477 | // Check whether the current packet has a 255 preference option or not.\r | |
2478 | // Take non-preference option as 0 value.\r | |
2479 | //\r | |
d1050b9d | 2480 | Option = Dhcp6SeekOption (\r |
a3bcde70 HT |
2481 | Packet->Dhcp6.Option,\r |
2482 | Packet->Length - 4,\r | |
2483 | Dhcp6OptPreference\r | |
2484 | );\r | |
2485 | \r | |
d1050b9d | 2486 | if ((Instance->AdSelect == NULL) || ((Option != NULL) && (*(Option + 4) > Instance->AdPref))) {\r |
a3bcde70 HT |
2487 | //\r |
2488 | // No advertisements received before or preference is more than other\r | |
2489 | // advertisements received before. Then store the new packet and the\r | |
2490 | // preference value.\r | |
2491 | //\r | |
2492 | if (Instance->AdSelect != NULL) {\r | |
2493 | FreePool (Instance->AdSelect);\r | |
2494 | }\r | |
2495 | \r | |
2496 | Instance->AdSelect = AllocateZeroPool (Packet->Size);\r | |
2497 | \r | |
2498 | if (Instance->AdSelect == NULL) {\r | |
2499 | return EFI_OUT_OF_RESOURCES;\r | |
2500 | }\r | |
2501 | \r | |
2502 | CopyMem (Instance->AdSelect, Packet, Packet->Size);\r | |
2503 | \r | |
2504 | if (Option != NULL) {\r | |
2505 | Instance->AdPref = *(Option + 4);\r | |
2506 | }\r | |
2507 | } else {\r | |
2508 | //\r | |
2509 | // Non-preference and other advertisements received before or current\r | |
2510 | // preference is less than other advertisements received before.\r | |
2511 | // Leave the packet alone.\r | |
2512 | }\r | |
a3bcde70 HT |
2513 | } else {\r |
2514 | //\r | |
2515 | // Other error status means termination.\r | |
2516 | //\r | |
2517 | return Status;\r | |
2518 | }\r | |
2519 | \r | |
2520 | //\r | |
2521 | // Client must collect advertise messages as more as possible until the first\r | |
2522 | // RT has elapsed, or get a highest preference 255 advertise.\r | |
2523 | // See details in the section-17.1.2 of rfc-3315.\r | |
2524 | //\r | |
d1050b9d | 2525 | if ((Instance->AdPref == 0xff) || Timeout) {\r |
a3bcde70 HT |
2526 | Status = Dhcp6SelectAdvertiseMsg (Instance, Instance->AdSelect);\r |
2527 | }\r | |
2528 | \r | |
2529 | return Status;\r | |
2530 | }\r | |
2531 | \r | |
a3bcde70 HT |
2532 | /**\r |
2533 | The Dhcp6 stateful exchange process routine.\r | |
2534 | \r | |
2535 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
2536 | @param[in] Packet The pointer to the received Dhcp6 message.\r | |
2537 | \r | |
2538 | **/\r | |
2539 | VOID\r | |
2540 | Dhcp6HandleStateful (\r | |
d1050b9d MK |
2541 | IN DHCP6_INSTANCE *Instance,\r |
2542 | IN EFI_DHCP6_PACKET *Packet\r | |
a3bcde70 HT |
2543 | )\r |
2544 | {\r | |
d1050b9d MK |
2545 | EFI_STATUS Status;\r |
2546 | EFI_DHCP6_DUID *ClientId;\r | |
2547 | DHCP6_SERVICE *Service;\r | |
2548 | UINT8 *Option;\r | |
a3bcde70 HT |
2549 | \r |
2550 | Service = Instance->Service;\r | |
2551 | ClientId = Service->ClientId;\r | |
2552 | Status = EFI_SUCCESS;\r | |
2553 | \r | |
216f7970 | 2554 | if (Instance->Config == NULL) {\r |
a3bcde70 HT |
2555 | goto ON_CONTINUE;\r |
2556 | }\r | |
2557 | \r | |
2558 | ASSERT (ClientId);\r | |
2559 | ASSERT (Instance->Config);\r | |
2560 | ASSERT (Instance->IaCb.Ia);\r | |
2561 | \r | |
2562 | //\r | |
2563 | // Discard the packet if not advertisement or reply packet.\r | |
2564 | //\r | |
d1050b9d | 2565 | if ((Packet->Dhcp6.Header.MessageType != Dhcp6MsgAdvertise) && (Packet->Dhcp6.Header.MessageType != Dhcp6MsgReply)) {\r |
a3bcde70 HT |
2566 | goto ON_CONTINUE;\r |
2567 | }\r | |
2568 | \r | |
2569 | //\r | |
2570 | // Check whether include client Id or not.\r | |
2571 | //\r | |
d1050b9d | 2572 | Option = Dhcp6SeekOption (\r |
a3bcde70 HT |
2573 | Packet->Dhcp6.Option,\r |
2574 | Packet->Length - 4,\r | |
2575 | Dhcp6OptClientId\r | |
2576 | );\r | |
2577 | \r | |
d1050b9d | 2578 | if ((Option == NULL) || (CompareMem (Option + 4, ClientId->Duid, ClientId->Length) != 0)) {\r |
a3bcde70 HT |
2579 | goto ON_CONTINUE;\r |
2580 | }\r | |
2581 | \r | |
2582 | //\r | |
2583 | // Check whether include server Id or not.\r | |
2584 | //\r | |
d1050b9d | 2585 | Option = Dhcp6SeekOption (\r |
a3bcde70 HT |
2586 | Packet->Dhcp6.Option,\r |
2587 | Packet->Length - 4,\r | |
2588 | Dhcp6OptServerId\r | |
2589 | );\r | |
2590 | \r | |
2591 | if (Option == NULL) {\r | |
2592 | goto ON_CONTINUE;\r | |
2593 | }\r | |
2594 | \r | |
2595 | switch (Instance->IaCb.Ia->State) {\r | |
d1050b9d MK |
2596 | case Dhcp6Selecting:\r |
2597 | //\r | |
2598 | // Handle the advertisement message when in the Dhcp6Selecting state.\r | |
2599 | // Do not need check return status, if failed, just continue to the next.\r | |
2600 | //\r | |
2601 | Dhcp6HandleAdvertiseMsg (Instance, Packet);\r | |
2602 | break;\r | |
2603 | \r | |
2604 | case Dhcp6Requesting:\r | |
2605 | case Dhcp6Confirming:\r | |
2606 | case Dhcp6Renewing:\r | |
2607 | case Dhcp6Rebinding:\r | |
2608 | case Dhcp6Releasing:\r | |
2609 | case Dhcp6Declining:\r | |
2610 | //\r | |
2611 | // Handle the reply message when in the Dhcp6Requesting, Dhcp6Renewing\r | |
2612 | // Dhcp6Rebinding, Dhcp6Releasing and Dhcp6Declining state.\r | |
2613 | // If failed here, it should reset the current session.\r | |
2614 | //\r | |
2615 | Status = Dhcp6HandleReplyMsg (Instance, Packet);\r | |
2616 | if (EFI_ERROR (Status)) {\r | |
2617 | goto ON_EXIT;\r | |
2618 | }\r | |
2619 | \r | |
2620 | break;\r | |
2621 | default:\r | |
2622 | //\r | |
2623 | // Other state has not supported yet.\r | |
2624 | //\r | |
2625 | break;\r | |
a3bcde70 HT |
2626 | }\r |
2627 | \r | |
2628 | ON_CONTINUE:\r | |
2629 | //\r | |
2630 | // Continue to receive the following Dhcp6 message.\r | |
2631 | //\r | |
2632 | Status = UdpIoRecvDatagram (\r | |
2633 | Service->UdpIo,\r | |
2634 | Dhcp6ReceivePacket,\r | |
2635 | Service,\r | |
2636 | 0\r | |
2637 | );\r | |
2638 | ON_EXIT:\r | |
2639 | if (EFI_ERROR (Status)) {\r | |
2640 | Dhcp6CleanupSession (Instance, Status);\r | |
2641 | }\r | |
2642 | }\r | |
2643 | \r | |
a3bcde70 HT |
2644 | /**\r |
2645 | The Dhcp6 stateless exchange process routine.\r | |
2646 | \r | |
2647 | @param[in] Instance The pointer to the Dhcp6 instance.\r | |
2648 | @param[in] Packet The pointer to the received Dhcp6 message.\r | |
2649 | \r | |
2650 | **/\r | |
2651 | VOID\r | |
2652 | Dhcp6HandleStateless (\r | |
d1050b9d MK |
2653 | IN DHCP6_INSTANCE *Instance,\r |
2654 | IN EFI_DHCP6_PACKET *Packet\r | |
a3bcde70 HT |
2655 | )\r |
2656 | {\r | |
d1050b9d MK |
2657 | EFI_STATUS Status;\r |
2658 | DHCP6_SERVICE *Service;\r | |
2659 | DHCP6_INF_CB *InfCb;\r | |
2660 | UINT8 *Option;\r | |
2661 | BOOLEAN IsMatched;\r | |
a3bcde70 HT |
2662 | \r |
2663 | Service = Instance->Service;\r | |
2664 | Status = EFI_SUCCESS;\r | |
2665 | IsMatched = FALSE;\r | |
2666 | InfCb = NULL;\r | |
2667 | \r | |
a3bcde70 HT |
2668 | if (Packet->Dhcp6.Header.MessageType != Dhcp6MsgReply) {\r |
2669 | goto ON_EXIT;\r | |
2670 | }\r | |
2671 | \r | |
2672 | //\r | |
2673 | // Check whether it's a desired Info-request message by Xid.\r | |
2674 | //\r | |
2675 | while (!IsListEmpty (&Instance->InfList)) {\r | |
2676 | InfCb = NET_LIST_HEAD (&Instance->InfList, DHCP6_INF_CB, Link);\r | |
2677 | if (InfCb->Xid == Packet->Dhcp6.Header.TransactionId) {\r | |
2678 | IsMatched = TRUE;\r | |
2679 | break;\r | |
2680 | }\r | |
2681 | }\r | |
2682 | \r | |
2683 | if (!IsMatched) {\r | |
2684 | goto ON_EXIT;\r | |
2685 | }\r | |
2686 | \r | |
2687 | //\r | |
2688 | // Check whether include server Id or not.\r | |
2689 | //\r | |
2690 | Option = Dhcp6SeekOption (\r | |
2691 | Packet->Dhcp6.Option,\r | |
2692 | Packet->Length - 4,\r | |
2693 | Dhcp6OptServerId\r | |
2694 | );\r | |
2695 | \r | |
2696 | if (Option == NULL) {\r | |
2697 | goto ON_EXIT;\r | |
2698 | }\r | |
2699 | \r | |
2700 | //\r | |
2701 | // Callback to user with the received packet and check the user's feedback.\r | |
2702 | //\r | |
2703 | Status = InfCb->ReplyCallback (\r | |
2704 | &Instance->Dhcp6,\r | |
2705 | InfCb->CallbackContext,\r | |
2706 | Packet\r | |
2707 | );\r | |
2708 | \r | |
2709 | if (Status == EFI_NOT_READY) {\r | |
2710 | //\r | |
2711 | // Success or aborted will both stop this info-request exchange process,\r | |
2712 | // but not ready means user wants to continue to receive reply.\r | |
2713 | //\r | |
2714 | goto ON_EXIT;\r | |
2715 | }\r | |
2716 | \r | |
2717 | //\r | |
2718 | // Dequeue the sent packet from the txlist if the xid matched, and ignore\r | |
2719 | // if no xid matched.\r | |
2720 | //\r | |
2721 | Dhcp6DequeueRetry (\r | |
2722 | Instance,\r | |
2723 | Packet->Dhcp6.Header.TransactionId,\r | |
2724 | FALSE\r | |
2725 | );\r | |
2726 | \r | |
2727 | //\r | |
2728 | // For sync, set the status out of polling for info-request.\r | |
2729 | //\r | |
2730 | Instance->UdpSts = Status;\r | |
2731 | \r | |
2732 | ON_EXIT:\r | |
2733 | \r | |
2734 | Status = UdpIoRecvDatagram (\r | |
2735 | Service->UdpIo,\r | |
2736 | Dhcp6ReceivePacket,\r | |
2737 | Service,\r | |
2738 | 0\r | |
2739 | );\r | |
2740 | \r | |
2741 | if (EFI_ERROR (Status)) {\r | |
2742 | Dhcp6CleanupRetry (Instance, DHCP6_PACKET_STATELESS);\r | |
2743 | }\r | |
2744 | }\r | |
2745 | \r | |
a3bcde70 HT |
2746 | /**\r |
2747 | The receive callback function for Dhcp6 exchange process.\r | |
2748 | \r | |
2749 | @param[in] Udp6Wrap The pointer to the received net buffer.\r | |
2750 | @param[in] EndPoint The pointer to the udp end point.\r | |
2751 | @param[in] IoStatus The return status from udp io.\r | |
2752 | @param[in] Context The opaque parameter to the function.\r | |
2753 | \r | |
2754 | **/\r | |
2755 | VOID\r | |
2756 | EFIAPI\r | |
2757 | Dhcp6ReceivePacket (\r | |
d1050b9d MK |
2758 | IN NET_BUF *Udp6Wrap,\r |
2759 | IN UDP_END_POINT *EndPoint,\r | |
2760 | IN EFI_STATUS IoStatus,\r | |
2761 | IN VOID *Context\r | |
a3bcde70 HT |
2762 | )\r |
2763 | {\r | |
d1050b9d MK |
2764 | EFI_DHCP6_HEADER *Head;\r |
2765 | EFI_DHCP6_PACKET *Packet;\r | |
2766 | DHCP6_SERVICE *Service;\r | |
2767 | DHCP6_INSTANCE *Instance;\r | |
2768 | DHCP6_TX_CB *TxCb;\r | |
2769 | UINT32 Size;\r | |
2770 | BOOLEAN IsDispatched;\r | |
2771 | BOOLEAN IsStateless;\r | |
2772 | LIST_ENTRY *Entry1;\r | |
2773 | LIST_ENTRY *Next1;\r | |
2774 | LIST_ENTRY *Entry2;\r | |
2775 | LIST_ENTRY *Next2;\r | |
2776 | EFI_STATUS Status;\r | |
a3bcde70 HT |
2777 | \r |
2778 | ASSERT (Udp6Wrap != NULL);\r | |
2779 | ASSERT (Context != NULL);\r | |
2780 | \r | |
d1050b9d | 2781 | Service = (DHCP6_SERVICE *)Context;\r |
a3bcde70 HT |
2782 | Instance = NULL;\r |
2783 | Packet = NULL;\r | |
2784 | IsDispatched = FALSE;\r | |
2785 | IsStateless = FALSE;\r | |
2786 | \r | |
2787 | if (EFI_ERROR (IoStatus)) {\r | |
d1050b9d | 2788 | return;\r |
a3bcde70 HT |
2789 | }\r |
2790 | \r | |
37b68011 FS |
2791 | if (Udp6Wrap->TotalSize < sizeof (EFI_DHCP6_HEADER)) {\r |
2792 | goto ON_CONTINUE;\r | |
2793 | }\r | |
2794 | \r | |
a3bcde70 HT |
2795 | //\r |
2796 | // Copy the net buffer received from upd6 to a Dhcp6 packet.\r | |
2797 | //\r | |
2798 | Size = sizeof (EFI_DHCP6_PACKET) + Udp6Wrap->TotalSize;\r | |
d1050b9d | 2799 | Packet = (EFI_DHCP6_PACKET *)AllocateZeroPool (Size);\r |
a3bcde70 HT |
2800 | \r |
2801 | if (Packet == NULL) {\r | |
2802 | goto ON_CONTINUE;\r | |
2803 | }\r | |
2804 | \r | |
2805 | Packet->Size = Size;\r | |
2806 | Head = &Packet->Dhcp6.Header;\r | |
d1050b9d | 2807 | Packet->Length = NetbufCopy (Udp6Wrap, 0, Udp6Wrap->TotalSize, (UINT8 *)Head);\r |
a3bcde70 HT |
2808 | \r |
2809 | if (Packet->Length == 0) {\r | |
2810 | goto ON_CONTINUE;\r | |
2811 | }\r | |
2812 | \r | |
2813 | //\r | |
2814 | // Dispatch packet to right instance by transaction id.\r | |
2815 | //\r | |
2816 | NET_LIST_FOR_EACH_SAFE (Entry1, Next1, &Service->Child) {\r | |
a3bcde70 HT |
2817 | Instance = NET_LIST_USER_STRUCT (Entry1, DHCP6_INSTANCE, Link);\r |
2818 | \r | |
2819 | NET_LIST_FOR_EACH_SAFE (Entry2, Next2, &Instance->TxList) {\r | |
a3bcde70 HT |
2820 | TxCb = NET_LIST_USER_STRUCT (Entry2, DHCP6_TX_CB, Link);\r |
2821 | \r | |
2822 | if (Packet->Dhcp6.Header.TransactionId == TxCb->Xid) {\r | |
2823 | //\r | |
2824 | // Find the corresponding packet in tx list, and check it whether belongs\r | |
2825 | // to stateful exchange process.\r | |
2826 | //\r | |
2827 | if (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgInfoRequest) {\r | |
2828 | IsStateless = TRUE;\r | |
2829 | }\r | |
d1050b9d MK |
2830 | \r |
2831 | IsDispatched = TRUE;\r | |
a3bcde70 HT |
2832 | break;\r |
2833 | }\r | |
2834 | }\r | |
2835 | \r | |
2836 | if (IsDispatched) {\r | |
2837 | break;\r | |
2838 | }\r | |
2839 | }\r | |
2840 | \r | |
2841 | //\r | |
2842 | // Skip this packet if not dispatched to any instance.\r | |
2843 | //\r | |
2844 | if (!IsDispatched) {\r | |
2845 | goto ON_CONTINUE;\r | |
2846 | }\r | |
2847 | \r | |
2848 | //\r | |
2849 | // Dispatch the received packet ot the right instance.\r | |
2850 | //\r | |
2851 | if (IsStateless) {\r | |
2852 | Dhcp6HandleStateless (Instance, Packet);\r | |
2853 | } else {\r | |
2854 | Dhcp6HandleStateful (Instance, Packet);\r | |
2855 | }\r | |
2856 | \r | |
2857 | ON_CONTINUE:\r | |
2858 | \r | |
4701d965 GL |
2859 | if (!IsDispatched) {\r |
2860 | Status = UdpIoRecvDatagram (\r | |
d1050b9d MK |
2861 | Service->UdpIo,\r |
2862 | Dhcp6ReceivePacket,\r | |
2863 | Service,\r | |
2864 | 0\r | |
2865 | );\r | |
4701d965 | 2866 | if (EFI_ERROR (Status)) {\r |
01b699a9 SQ |
2867 | NET_LIST_FOR_EACH_SAFE (Entry1, Next1, &Service->Child) {\r |
2868 | Instance = NET_LIST_USER_STRUCT (Entry1, DHCP6_INSTANCE, Link);\r | |
2869 | Dhcp6CleanupRetry (Instance, DHCP6_PACKET_ALL);\r | |
2870 | }\r | |
4701d965 GL |
2871 | }\r |
2872 | }\r | |
2873 | \r | |
a3bcde70 HT |
2874 | NetbufFree (Udp6Wrap);\r |
2875 | \r | |
2876 | if (Packet != NULL) {\r | |
2877 | FreePool (Packet);\r | |
2878 | }\r | |
2879 | }\r | |
2880 | \r | |
2881 | /**\r | |
2882 | Detect Link movement for specified network device.\r | |
2883 | \r | |
2884 | This routine will try to invoke Snp->GetStatus() to get the media status.\r | |
2885 | If media present status switches from unpresent to present, a link movement\r | |
2886 | is detected. Note that the underlying UNDI driver may not support reporting\r | |
2887 | media status from GET_STATUS command. If that, fail to detect link movement.\r | |
2888 | \r | |
2889 | @param[in] Instance The pointer to DHCP6_INSTANCE.\r | |
2890 | \r | |
2891 | @retval TRUE A link movement is detected.\r | |
2892 | @retval FALSE A link movement is not detected.\r | |
2893 | \r | |
2894 | **/\r | |
2895 | BOOLEAN\r | |
2896 | Dhcp6LinkMovDetect (\r | |
d1050b9d | 2897 | IN DHCP6_INSTANCE *Instance\r |
a3bcde70 HT |
2898 | )\r |
2899 | {\r | |
2900 | UINT32 InterruptStatus;\r | |
2901 | BOOLEAN MediaPresent;\r | |
2902 | EFI_STATUS Status;\r | |
2903 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
2904 | \r | |
2905 | ASSERT (Instance != NULL);\r | |
d1050b9d | 2906 | Snp = Instance->Service->Snp;\r |
a3bcde70 HT |
2907 | MediaPresent = Instance->MediaPresent;\r |
2908 | \r | |
2909 | //\r | |
2910 | // Check whether SNP support media detection\r | |
2911 | //\r | |
2912 | if (!Snp->Mode->MediaPresentSupported) {\r | |
2913 | return FALSE;\r | |
2914 | }\r | |
2915 | \r | |
2916 | //\r | |
2917 | // Invoke Snp->GetStatus() to refresh MediaPresent field in SNP mode data\r | |
2918 | //\r | |
2919 | Status = Snp->GetStatus (Snp, &InterruptStatus, NULL);\r | |
2920 | if (EFI_ERROR (Status)) {\r | |
2921 | return FALSE;\r | |
2922 | }\r | |
2923 | \r | |
2924 | Instance->MediaPresent = Snp->Mode->MediaPresent;\r | |
2925 | //\r | |
2926 | // Media transimit Unpresent to Present means new link movement is detected.\r | |
2927 | //\r | |
2928 | if (!MediaPresent && Instance->MediaPresent) {\r | |
2929 | return TRUE;\r | |
2930 | }\r | |
d1050b9d | 2931 | \r |
a3bcde70 HT |
2932 | return FALSE;\r |
2933 | }\r | |
2934 | \r | |
a3bcde70 HT |
2935 | /**\r |
2936 | The timer routine of the Dhcp6 instance for each second.\r | |
2937 | \r | |
2938 | @param[in] Event The timer event.\r | |
2939 | @param[in] Context The opaque parameter to the function.\r | |
2940 | \r | |
2941 | **/\r | |
2942 | VOID\r | |
2943 | EFIAPI\r | |
2944 | Dhcp6OnTimerTick (\r | |
d1050b9d MK |
2945 | IN EFI_EVENT Event,\r |
2946 | IN VOID *Context\r | |
a3bcde70 HT |
2947 | )\r |
2948 | {\r | |
d1050b9d MK |
2949 | LIST_ENTRY *Entry;\r |
2950 | LIST_ENTRY *NextEntry;\r | |
2951 | DHCP6_INSTANCE *Instance;\r | |
2952 | DHCP6_TX_CB *TxCb;\r | |
2953 | DHCP6_IA_CB *IaCb;\r | |
2954 | UINT32 LossTime;\r | |
2955 | EFI_STATUS Status;\r | |
a3bcde70 HT |
2956 | \r |
2957 | ASSERT (Context != NULL);\r | |
2958 | \r | |
d1050b9d | 2959 | Instance = (DHCP6_INSTANCE *)Context;\r |
a3bcde70 HT |
2960 | \r |
2961 | //\r | |
2962 | // 1. Loop the tx list, count live time of every tx packet to check whether\r | |
2963 | // need re-transmit or not.\r | |
2964 | //\r | |
2965 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, &Instance->TxList) {\r | |
a3bcde70 HT |
2966 | TxCb = NET_LIST_USER_STRUCT (Entry, DHCP6_TX_CB, Link);\r |
2967 | \r | |
2968 | TxCb->TickTime++;\r | |
2969 | \r | |
2970 | if (TxCb->TickTime > TxCb->RetryExp) {\r | |
2971 | //\r | |
2972 | // Handle the first rt in the transmission of solicit specially.\r | |
2973 | //\r | |
d1050b9d | 2974 | if (((TxCb->RetryCnt == 0) || TxCb->SolicitRetry) && (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgSolicit)) {\r |
a3bcde70 HT |
2975 | if (Instance->AdSelect == NULL) {\r |
2976 | //\r | |
2977 | // Set adpref as 0xff here to indicate select any advertisement\r | |
2978 | // afterwards.\r | |
2979 | //\r | |
2980 | Instance->AdPref = 0xff;\r | |
2981 | } else {\r | |
2982 | //\r | |
2983 | // Select the advertisement received before.\r | |
2984 | //\r | |
42737ed9 | 2985 | Status = Dhcp6SelectAdvertiseMsg (Instance, Instance->AdSelect);\r |
b9f256bb | 2986 | if (Status == EFI_ABORTED) {\r |
2987 | goto ON_CLOSE;\r | |
2988 | } else if (EFI_ERROR (Status)) {\r | |
42737ed9 | 2989 | TxCb->RetryCnt++;\r |
2990 | }\r | |
d1050b9d | 2991 | \r |
a3bcde70 HT |
2992 | return;\r |
2993 | }\r | |
2994 | }\r | |
d1050b9d | 2995 | \r |
a3bcde70 HT |
2996 | //\r |
2997 | // Increase the retry count for the packet and add up the total loss time.\r | |
2998 | //\r | |
2999 | TxCb->RetryCnt++;\r | |
3000 | TxCb->RetryLos += TxCb->RetryExp;\r | |
3001 | \r | |
3002 | //\r | |
3003 | // Check whether overflow the max retry count limit for this packet\r | |
3004 | //\r | |
d1050b9d | 3005 | if ((TxCb->RetryCtl.Mrc != 0) && (TxCb->RetryCtl.Mrc < TxCb->RetryCnt)) {\r |
b9f256bb | 3006 | Status = EFI_NO_RESPONSE;\r |
a3bcde70 HT |
3007 | goto ON_CLOSE;\r |
3008 | }\r | |
3009 | \r | |
3010 | //\r | |
3011 | // Check whether overflow the max retry duration for this packet\r | |
3012 | //\r | |
d1050b9d | 3013 | if ((TxCb->RetryCtl.Mrd != 0) && (TxCb->RetryCtl.Mrd <= TxCb->RetryLos)) {\r |
b9f256bb | 3014 | Status = EFI_NO_RESPONSE;\r |
a3bcde70 HT |
3015 | goto ON_CLOSE;\r |
3016 | }\r | |
3017 | \r | |
3018 | //\r | |
3019 | // Re-calculate retry expire timeout for the next time.\r | |
3020 | //\r | |
3021 | // Firstly, Check the new calculated time whether overflow the max retry\r | |
3022 | // expire time.\r | |
3023 | //\r | |
3024 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r | |
3025 | TxCb->RetryExp,\r | |
3026 | FALSE,\r | |
3027 | TRUE\r | |
3028 | );\r | |
3029 | \r | |
d1050b9d | 3030 | if ((TxCb->RetryCtl.Mrt != 0) && (TxCb->RetryCtl.Mrt < TxCb->RetryExp)) {\r |
a3bcde70 HT |
3031 | TxCb->RetryExp = Dhcp6CalculateExpireTime (\r |
3032 | TxCb->RetryCtl.Mrt,\r | |
3033 | TRUE,\r | |
3034 | TRUE\r | |
3035 | );\r | |
3036 | }\r | |
3037 | \r | |
3038 | //\r | |
3039 | // Secondly, Check the new calculated time whether overflow the max retry\r | |
3040 | // duration time.\r | |
3041 | //\r | |
3042 | LossTime = TxCb->RetryLos + TxCb->RetryExp;\r | |
d1050b9d | 3043 | if ((TxCb->RetryCtl.Mrd != 0) && (TxCb->RetryCtl.Mrd < LossTime)) {\r |
a3bcde70 HT |
3044 | TxCb->RetryExp = TxCb->RetryCtl.Mrd - TxCb->RetryLos;\r |
3045 | }\r | |
3046 | \r | |
3047 | //\r | |
3048 | // Reset the tick time for the next retransmission\r | |
3049 | //\r | |
3050 | TxCb->TickTime = 0;\r | |
3051 | \r | |
3052 | //\r | |
3053 | // Retransmit the last sent packet again.\r | |
3054 | //\r | |
3055 | Dhcp6TransmitPacket (Instance, TxCb->TxPacket, TxCb->Elapsed);\r | |
129b8b09 | 3056 | TxCb->SolicitRetry = FALSE;\r |
3057 | if (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgSolicit) {\r | |
3058 | TxCb->SolicitRetry = TRUE;\r | |
3059 | }\r | |
a3bcde70 HT |
3060 | }\r |
3061 | }\r | |
3062 | \r | |
3063 | //\r | |
3064 | // 2. Check the configured Ia, count lease time of every valid Ia to check\r | |
3065 | // whether need to renew or rebind this Ia.\r | |
3066 | //\r | |
3067 | IaCb = &Instance->IaCb;\r | |
3068 | \r | |
d1050b9d | 3069 | if ((Instance->Config == NULL) || (IaCb->Ia == NULL)) {\r |
a3bcde70 HT |
3070 | return;\r |
3071 | }\r | |
3072 | \r | |
d1050b9d | 3073 | if ((IaCb->Ia->State == Dhcp6Bound) || (IaCb->Ia->State == Dhcp6Renewing) || (IaCb->Ia->State == Dhcp6Rebinding)) {\r |
a3bcde70 HT |
3074 | IaCb->LeaseTime++;\r |
3075 | \r | |
d1050b9d | 3076 | if ((IaCb->LeaseTime > IaCb->T2) && (IaCb->Ia->State == Dhcp6Bound)) {\r |
a3bcde70 HT |
3077 | //\r |
3078 | // Exceed t2, send rebind packet to extend the Ia lease.\r | |
3079 | //\r | |
3080 | Dhcp6SendRenewRebindMsg (Instance, TRUE);\r | |
d1050b9d | 3081 | } else if ((IaCb->LeaseTime > IaCb->T1) && (IaCb->Ia->State == Dhcp6Bound)) {\r |
a3bcde70 HT |
3082 | //\r |
3083 | // Exceed t1, send renew packet to extend the Ia lease.\r | |
3084 | //\r | |
3085 | Dhcp6SendRenewRebindMsg (Instance, FALSE);\r | |
3086 | }\r | |
3087 | }\r | |
3088 | \r | |
3089 | //\r | |
3090 | // 3. In any situation when a client may have moved to a new link, the\r | |
3091 | // client MUST initiate a Confirm/Reply message exchange.\r | |
3092 | //\r | |
3093 | if (Dhcp6LinkMovDetect (Instance) && (IaCb->Ia->State == Dhcp6Bound)) {\r | |
3094 | Dhcp6SendConfirmMsg (Instance);\r | |
3095 | }\r | |
3096 | \r | |
3097 | return;\r | |
3098 | \r | |
d1050b9d | 3099 | ON_CLOSE:\r |
a3bcde70 | 3100 | \r |
d2ea3b83 | 3101 | if (Dhcp6IsValidTxCb (Instance, TxCb) &&\r |
d1050b9d MK |
3102 | (TxCb->TxPacket != NULL) &&\r |
3103 | ((TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgInfoRequest) ||\r | |
3104 | (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgRenew) ||\r | |
3105 | (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgConfirm))\r | |
3106 | )\r | |
3107 | {\r | |
a3bcde70 HT |
3108 | //\r |
3109 | // The failure of renew/Confirm will still switch to the bound state.\r | |
3110 | //\r | |
3111 | if ((TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgRenew) ||\r | |
d1050b9d MK |
3112 | (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgConfirm))\r |
3113 | {\r | |
a3bcde70 HT |
3114 | ASSERT (Instance->IaCb.Ia);\r |
3115 | Instance->IaCb.Ia->State = Dhcp6Bound;\r | |
3116 | }\r | |
d1050b9d | 3117 | \r |
a3bcde70 HT |
3118 | //\r |
3119 | // The failure of info-request will return no response.\r | |
3120 | //\r | |
3121 | if (TxCb->TxPacket->Dhcp6.Header.MessageType == Dhcp6MsgInfoRequest) {\r | |
3122 | Instance->UdpSts = EFI_NO_RESPONSE;\r | |
3123 | }\r | |
d1050b9d | 3124 | \r |
a3bcde70 HT |
3125 | Dhcp6DequeueRetry (\r |
3126 | Instance,\r | |
3127 | TxCb->Xid,\r | |
3128 | TRUE\r | |
3129 | );\r | |
3130 | } else {\r | |
3131 | //\r | |
3132 | // The failure of the others will terminate current state machine if timeout.\r | |
3133 | //\r | |
b9f256bb | 3134 | Dhcp6CleanupSession (Instance, Status);\r |
a3bcde70 HT |
3135 | }\r |
3136 | }\r |