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1 | /** @file\r | |
2 | Dhcp6 internal data structure and definition declaration.\r | |
3 | \r | |
4 | Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>\r | |
5 | \r | |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php.\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #ifndef __EFI_DHCP6_IMPL_H__\r | |
17 | #define __EFI_DHCP6_IMPL_H__\r | |
18 | \r | |
19 | \r | |
20 | #include <Uefi.h>\r | |
21 | \r | |
22 | #include <IndustryStandard/Dhcp.h>\r | |
23 | \r | |
24 | #include <Protocol/Dhcp6.h>\r | |
25 | #include <Protocol/Udp6.h>\r | |
26 | #include <Protocol/Ip6Config.h>\r | |
27 | #include <Protocol/ServiceBinding.h>\r | |
28 | #include <Protocol/DriverBinding.h>\r | |
29 | \r | |
30 | #include <Library/UdpIoLib.h>\r | |
31 | #include <Library/DebugLib.h>\r | |
32 | #include <Library/BaseMemoryLib.h>\r | |
33 | #include <Library/MemoryAllocationLib.h>\r | |
34 | #include <Library/UefiBootServicesTableLib.h>\r | |
35 | #include <Library/UefiRuntimeServicesTableLib.h>\r | |
36 | #include <Library/UefiLib.h>\r | |
37 | #include <Library/BaseLib.h>\r | |
38 | #include <Library/NetLib.h>\r | |
39 | #include <Library/PrintLib.h>\r | |
40 | #include <Guid/ZeroGuid.h>\r | |
41 | \r | |
42 | \r | |
43 | typedef struct _DHCP6_IA_CB DHCP6_IA_CB;\r | |
44 | typedef struct _DHCP6_INF_CB DHCP6_INF_CB;\r | |
45 | typedef struct _DHCP6_TX_CB DHCP6_TX_CB;\r | |
46 | typedef struct _DHCP6_SERVICE DHCP6_SERVICE;\r | |
47 | typedef struct _DHCP6_INSTANCE DHCP6_INSTANCE;\r | |
48 | \r | |
49 | #include "Dhcp6Utility.h"\r | |
50 | #include "Dhcp6Io.h"\r | |
51 | #include "Dhcp6Driver.h"\r | |
52 | \r | |
53 | #define DHCP6_SERVICE_SIGNATURE SIGNATURE_32 ('D', 'H', '6', 'S')\r | |
54 | #define DHCP6_INSTANCE_SIGNATURE SIGNATURE_32 ('D', 'H', '6', 'I')\r | |
55 | \r | |
56 | #define DHCP6_PACKET_ALL 0\r | |
57 | #define DHCP6_PACKET_STATEFUL 1\r | |
58 | #define DHCP6_PACKET_STATELESS 2\r | |
59 | \r | |
60 | #define DHCP6_BASE_PACKET_SIZE 1024\r | |
61 | \r | |
62 | #define DHCP6_PORT_CLIENT 546\r | |
63 | #define DHCP6_PORT_SERVER 547\r | |
64 | \r | |
65 | #define DHCP_CHECK_MEDIA_WAITING_TIME EFI_TIMER_PERIOD_SECONDS(20)\r | |
66 | \r | |
67 | #define DHCP6_INSTANCE_FROM_THIS(Instance) CR ((Instance), DHCP6_INSTANCE, Dhcp6, DHCP6_INSTANCE_SIGNATURE)\r | |
68 | #define DHCP6_SERVICE_FROM_THIS(Service) CR ((Service), DHCP6_SERVICE, ServiceBinding, DHCP6_SERVICE_SIGNATURE)\r | |
69 | \r | |
70 | extern EFI_IPv6_ADDRESS mAllDhcpRelayAndServersAddress;\r | |
71 | extern EFI_IPv6_ADDRESS mAllDhcpServersAddress;\r | |
72 | extern EFI_DHCP6_PROTOCOL gDhcp6ProtocolTemplate;\r | |
73 | \r | |
74 | //\r | |
75 | // Control block for each IA.\r | |
76 | //\r | |
77 | struct _DHCP6_IA_CB {\r | |
78 | EFI_DHCP6_IA *Ia;\r | |
79 | UINT32 T1;\r | |
80 | UINT32 T2;\r | |
81 | UINT32 AllExpireTime;\r | |
82 | UINT32 LeaseTime;\r | |
83 | };\r | |
84 | \r | |
85 | //\r | |
86 | // Control block for each transmitted message.\r | |
87 | //\r | |
88 | struct _DHCP6_TX_CB {\r | |
89 | LIST_ENTRY Link;\r | |
90 | UINT32 Xid;\r | |
91 | EFI_DHCP6_PACKET *TxPacket;\r | |
92 | EFI_DHCP6_RETRANSMISSION RetryCtl;\r | |
93 | UINT32 RetryCnt;\r | |
94 | UINT32 RetryExp;\r | |
95 | UINT32 RetryLos;\r | |
96 | UINT32 TickTime;\r | |
97 | UINT16 *Elapsed;\r | |
98 | BOOLEAN SolicitRetry;\r | |
99 | };\r | |
100 | \r | |
101 | //\r | |
102 | // Control block for each info-request message.\r | |
103 | //\r | |
104 | struct _DHCP6_INF_CB {\r | |
105 | LIST_ENTRY Link;\r | |
106 | UINT32 Xid;\r | |
107 | EFI_DHCP6_INFO_CALLBACK ReplyCallback;\r | |
108 | VOID *CallbackContext;\r | |
109 | EFI_EVENT TimeoutEvent;\r | |
110 | };\r | |
111 | \r | |
112 | //\r | |
113 | // Control block for Dhcp6 instance, it's per configuration data.\r | |
114 | //\r | |
115 | struct _DHCP6_INSTANCE {\r | |
116 | UINT32 Signature;\r | |
117 | EFI_HANDLE Handle;\r | |
118 | DHCP6_SERVICE *Service;\r | |
119 | LIST_ENTRY Link;\r | |
120 | EFI_DHCP6_PROTOCOL Dhcp6;\r | |
121 | EFI_EVENT Timer;\r | |
122 | EFI_DHCP6_CONFIG_DATA *Config;\r | |
123 | EFI_DHCP6_IA *CacheIa;\r | |
124 | DHCP6_IA_CB IaCb;\r | |
125 | LIST_ENTRY TxList;\r | |
126 | LIST_ENTRY InfList;\r | |
127 | EFI_DHCP6_PACKET *AdSelect;\r | |
128 | UINT8 AdPref;\r | |
129 | EFI_IPv6_ADDRESS *Unicast;\r | |
130 | volatile EFI_STATUS UdpSts;\r | |
131 | BOOLEAN InDestroy;\r | |
132 | BOOLEAN MediaPresent;\r | |
133 | //\r | |
134 | // StartTime is used to calculate the 'elapsed-time' option. Refer to RFC3315,\r | |
135 | // the elapsed-time is amount of time since the client began its current DHCP transaction. \r | |
136 | //\r | |
137 | UINT64 StartTime;\r | |
138 | };\r | |
139 | \r | |
140 | //\r | |
141 | // Control block for Dhcp6 service, it's per Nic handle.\r | |
142 | //\r | |
143 | struct _DHCP6_SERVICE {\r | |
144 | UINT32 Signature;\r | |
145 | EFI_HANDLE Controller;\r | |
146 | EFI_HANDLE Image;\r | |
147 | EFI_SERVICE_BINDING_PROTOCOL ServiceBinding;\r | |
148 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
149 | EFI_IP6_CONFIG_PROTOCOL *Ip6Cfg;\r | |
150 | EFI_DHCP6_DUID *ClientId;\r | |
151 | UDP_IO *UdpIo;\r | |
152 | UINT32 Xid;\r | |
153 | LIST_ENTRY Child;\r | |
154 | UINTN NumOfChild;\r | |
155 | };\r | |
156 | \r | |
157 | /**\r | |
158 | Starts the DHCPv6 standard S.A.R.R. process.\r | |
159 | \r | |
160 | The Start() function starts the DHCPv6 standard process. This function can\r | |
161 | be called only when the state of Dhcp6 instance is in the Dhcp6Init state.\r | |
162 | If the DHCP process completes successfully, the state of the Dhcp6 instance\r | |
163 | will be transferred through Dhcp6Selecting and Dhcp6Requesting to the\r | |
164 | Dhcp6Bound state.\r | |
165 | Refer to rfc-3315 for precise state transitions during this process. At the\r | |
166 | time when each event occurs in this process, the callback function that was set\r | |
167 | by EFI_DHCP6_PROTOCOL.Configure() will be called and the user can take this\r | |
168 | opportunity to control the process.\r | |
169 | \r | |
170 | @param[in] This The pointer to Dhcp6 protocol.\r | |
171 | \r | |
172 | @retval EFI_SUCCESS The DHCPv6 standard process has started, or it\r | |
173 | completed when CompletionEvent was NULL.\r | |
174 | @retval EFI_ACCESS_DENIED The EFI DHCPv6 Child instance hasn't been configured.\r | |
175 | @retval EFI_INVALID_PARAMETER This is NULL.\r | |
176 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
177 | @retval EFI_TIMEOUT The DHCPv6 configuration process failed because no\r | |
178 | response was received from the server within the\r | |
179 | specified timeout value.\r | |
180 | @retval EFI_ABORTED The user aborted the DHCPv6 process.\r | |
181 | @retval EFI_ALREADY_STARTED Some other Dhcp6 instance already started the DHCPv6\r | |
182 | standard process.\r | |
183 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.\r | |
184 | \r | |
185 | **/\r | |
186 | EFI_STATUS\r | |
187 | EFIAPI\r | |
188 | EfiDhcp6Start (\r | |
189 | IN EFI_DHCP6_PROTOCOL *This\r | |
190 | );\r | |
191 | \r | |
192 | /**\r | |
193 | Stops the DHCPv6 standard S.A.R.R. process.\r | |
194 | \r | |
195 | The Stop() function is used to stop the DHCPv6 standard process. After this\r | |
196 | function is called successfully, the state of Dhcp6 instance is transferred\r | |
197 | into the Dhcp6Init. EFI_DHCP6_PROTOCOL.Configure() needs to be called\r | |
198 | before DHCPv6 standard process can be started again. This function can be\r | |
199 | called when the Dhcp6 instance is in any state.\r | |
200 | \r | |
201 | @param[in] This The pointer to the Dhcp6 protocol.\r | |
202 | \r | |
203 | @retval EFI_SUCCESS The Dhcp6 instance is now in the Dhcp6Init state.\r | |
204 | @retval EFI_INVALID_PARAMETER This is NULL.\r | |
205 | \r | |
206 | **/\r | |
207 | EFI_STATUS\r | |
208 | EFIAPI\r | |
209 | EfiDhcp6Stop (\r | |
210 | IN EFI_DHCP6_PROTOCOL *This\r | |
211 | );\r | |
212 | \r | |
213 | /**\r | |
214 | Returns the current operating mode data for the Dhcp6 instance.\r | |
215 | \r | |
216 | The GetModeData() function returns the current operating mode and\r | |
217 | cached data packet for the Dhcp6 instance.\r | |
218 | \r | |
219 | @param[in] This The pointer to the Dhcp6 protocol.\r | |
220 | @param[out] Dhcp6ModeData The pointer to the Dhcp6 mode data.\r | |
221 | @param[out] Dhcp6ConfigData The pointer to the Dhcp6 configure data.\r | |
222 | \r | |
223 | @retval EFI_SUCCESS The mode data was returned.\r | |
224 | @retval EFI_INVALID_PARAMETER This is NULL.\r | |
225 | @retval EFI_ACCESS_DENIED The EFI DHCPv6 Protocol instance has not\r | |
226 | been configured when Dhcp6ConfigData is\r | |
227 | not NULL.\r | |
228 | **/\r | |
229 | EFI_STATUS\r | |
230 | EFIAPI\r | |
231 | EfiDhcp6GetModeData (\r | |
232 | IN EFI_DHCP6_PROTOCOL *This,\r | |
233 | OUT EFI_DHCP6_MODE_DATA *Dhcp6ModeData OPTIONAL,\r | |
234 | OUT EFI_DHCP6_CONFIG_DATA *Dhcp6ConfigData OPTIONAL\r | |
235 | );\r | |
236 | \r | |
237 | /**\r | |
238 | Initializes, changes, or resets the operational settings for the Dhcp6 instance.\r | |
239 | \r | |
240 | The Configure() function is used to initialize or clean up the configuration\r | |
241 | data of the Dhcp6 instance:\r | |
242 | - When Dhcp6CfgData is not NULL and Configure() is called successfully, the\r | |
243 | configuration data will be initialized in the Dhcp6 instance and the state\r | |
244 | of the configured IA will be transferred into Dhcp6Init.\r | |
245 | - When Dhcp6CfgData is NULL and Configure() is called successfully, the\r | |
246 | configuration data will be cleaned up and no IA will be associated with\r | |
247 | the Dhcp6 instance.\r | |
248 | To update the configuration data for an Dhcp6 instance, the original data\r | |
249 | must be cleaned up before setting the new configuration data.\r | |
250 | \r | |
251 | @param[in] This The pointer to the Dhcp6 protocol\r | |
252 | @param[in] Dhcp6CfgData The pointer to the EFI_DHCP6_CONFIG_DATA.\r | |
253 | \r | |
254 | @retval EFI_SUCCESS The Dhcp6 is configured successfully with the\r | |
255 | Dhcp6Init state, or cleaned up the original\r | |
256 | configuration setting.\r | |
257 | @retval EFI_ACCESS_DENIED The Dhcp6 instance has been already configured\r | |
258 | when Dhcp6CfgData is not NULL.\r | |
259 | The Dhcp6 instance has already started the\r | |
260 | DHCPv6 S.A.R.R when Dhcp6CfgData is NULL.\r | |
261 | @retval EFI_INVALID_PARAMETER Some of the parameter is invalid.\r | |
262 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
263 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.\r | |
264 | \r | |
265 | **/\r | |
266 | EFI_STATUS\r | |
267 | EFIAPI\r | |
268 | EfiDhcp6Configure (\r | |
269 | IN EFI_DHCP6_PROTOCOL *This,\r | |
270 | IN EFI_DHCP6_CONFIG_DATA *Dhcp6CfgData OPTIONAL\r | |
271 | );\r | |
272 | \r | |
273 | /**\r | |
274 | Request configuration information without the assignment of any\r | |
275 | Ia addresses of the client.\r | |
276 | \r | |
277 | The InfoRequest() function is used to request configuration information\r | |
278 | without the assignment of any IPv6 address of the client. Client sends\r | |
279 | out Information Request packet to obtain the required configuration\r | |
280 | information, and DHCPv6 server responds with Reply packet containing\r | |
281 | the information for the client. The received Reply packet will be passed\r | |
282 | to the user by ReplyCallback function. If user returns EFI_NOT_READY from\r | |
283 | ReplyCallback, the Dhcp6 instance will continue to receive other Reply\r | |
284 | packets unless timeout according to the Retransmission parameter.\r | |
285 | Otherwise, the Information Request exchange process will be finished\r | |
286 | successfully if user returns EFI_SUCCESS from ReplyCallback.\r | |
287 | \r | |
288 | @param[in] This The pointer to the Dhcp6 protocol.\r | |
289 | @param[in] SendClientId If TRUE, the DHCPv6 protocol instance will build Client\r | |
290 | Identifier option and include it into Information Request\r | |
291 | packet. Otherwise, Client Identifier option will not be included.\r | |
292 | @param[in] OptionRequest The pointer to the buffer of option request options.\r | |
293 | @param[in] OptionCount The option number in the OptionList.\r | |
294 | @param[in] OptionList The list of appended options.\r | |
295 | @param[in] Retransmission The pointer to the retransmission of the message.\r | |
296 | @param[in] TimeoutEvent The event of timeout.\r | |
297 | @param[in] ReplyCallback The callback function when a reply was received.\r | |
298 | @param[in] CallbackContext The pointer to the parameter passed to the callback.\r | |
299 | \r | |
300 | @retval EFI_SUCCESS The DHCPv6 information request exchange process\r | |
301 | completed when TimeoutEvent is NULL. Information\r | |
302 | Request packet has been sent to DHCPv6 server when\r | |
303 | TimeoutEvent is not NULL.\r | |
304 | @retval EFI_NO_RESPONSE The DHCPv6 information request exchange process failed\r | |
305 | because of no response, or not all requested-options\r | |
306 | are responded to by DHCPv6 servers when Timeout happened.\r | |
307 | @retval EFI_ABORTED The DHCPv6 information request exchange process was aborted\r | |
308 | by the user.\r | |
309 | @retval EFI_INVALID_PARAMETER Some parameter is NULL.\r | |
310 | @retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.\r | |
311 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.\r | |
312 | \r | |
313 | **/\r | |
314 | EFI_STATUS\r | |
315 | EFIAPI\r | |
316 | EfiDhcp6InfoRequest (\r | |
317 | IN EFI_DHCP6_PROTOCOL *This,\r | |
318 | IN BOOLEAN SendClientId,\r | |
319 | IN EFI_DHCP6_PACKET_OPTION *OptionRequest,\r | |
320 | IN UINT32 OptionCount,\r | |
321 | IN EFI_DHCP6_PACKET_OPTION *OptionList[] OPTIONAL,\r | |
322 | IN EFI_DHCP6_RETRANSMISSION *Retransmission,\r | |
323 | IN EFI_EVENT TimeoutEvent OPTIONAL,\r | |
324 | IN EFI_DHCP6_INFO_CALLBACK ReplyCallback,\r | |
325 | IN VOID *CallbackContext OPTIONAL\r | |
326 | );\r | |
327 | \r | |
328 | /**\r | |
329 | Manually extend the valid and preferred lifetimes for the IPv6 addresses\r | |
330 | of the configured IA and update other configuration parameters by sending\r | |
331 | Renew or Rebind packet.\r | |
332 | \r | |
333 | The RenewRebind() function is used to manually extend the valid and preferred\r | |
334 | lifetimes for the IPv6 addresses of the configured IA and update other\r | |
335 | configuration parameters by sending a Renew or Rebind packet.\r | |
336 | - When RebindRequest is FALSE and the state of the configured IA is Dhcp6Bound,\r | |
337 | it will send Renew packet to the previously DHCPv6 server and transfer the\r | |
338 | state of the configured IA to Dhcp6Renewing. If valid Reply packet received,\r | |
339 | the state transfers to Dhcp6Bound and the valid and preferred timer restarts.\r | |
340 | If fails, the state transfers to Dhcp6Bound but the timer continues.\r | |
341 | - When RebindRequest is TRUE and the state of the configured IA is Dhcp6Bound,\r | |
342 | it will send a Rebind packet. If a valid Reply packet is received, the state transfers\r | |
343 | to Dhcp6Bound, and the valid and preferred timer restarts. If it fails, the state\r | |
344 | transfers to Dhcp6Init, and the IA can't be used.\r | |
345 | \r | |
346 | @param[in] This The pointer to the Dhcp6 protocol.\r | |
347 | @param[in] RebindRequest If TRUE, Rebind packet will be sent and enter Dhcp6Rebinding state.\r | |
348 | Otherwise, Renew packet will be sent and enter Dhcp6Renewing state.\r | |
349 | \r | |
350 | @retval EFI_SUCCESS The DHCPv6 renew/rebind exchange process\r | |
351 | completed and at least one IPv6 address of the\r | |
352 | configured IA was bound again when\r | |
353 | EFI_DHCP6_CONFIG_DATA.IaInfoEvent was NULL.\r | |
354 | The EFI DHCPv6 Protocol instance has sent Renew\r | |
355 | or Rebind packet when\r | |
356 | EFI_DHCP6_CONFIG_DATA.IaInfoEvent is not NULL.\r | |
357 | @retval EFI_ACCESS_DENIED The Dhcp6 instance hasn't been configured, or the\r | |
358 | state of the configured IA is not in Dhcp6Bound.\r | |
359 | @retval EFI_ALREADY_STARTED The state of the configured IA has already entered\r | |
360 | Dhcp6Renewing when RebindRequest is FALSE.\r | |
361 | The state of the configured IA has already entered\r | |
362 | Dhcp6Rebinding when RebindRequest is TRUE.\r | |
363 | @retval EFI_ABORTED The DHCPv6 renew/rebind exchange process aborted\r | |
364 | by user.\r | |
365 | @retval EFI_NO_RESPONSE The DHCPv6 renew/rebind exchange process failed\r | |
366 | because of no response.\r | |
367 | @retval EFI_NO_MAPPING No IPv6 address has been bound to the configured\r | |
368 | IA after the DHCPv6 renew/rebind exchange process.\r | |
369 | @retval EFI_INVALID_PARAMETER Some parameter is NULL.\r | |
370 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.\r | |
371 | \r | |
372 | **/\r | |
373 | EFI_STATUS\r | |
374 | EFIAPI\r | |
375 | EfiDhcp6RenewRebind (\r | |
376 | IN EFI_DHCP6_PROTOCOL *This,\r | |
377 | IN BOOLEAN RebindRequest\r | |
378 | );\r | |
379 | \r | |
380 | /**\r | |
381 | Inform that one or more addresses assigned by a server are already\r | |
382 | in use by another node.\r | |
383 | \r | |
384 | The Decline() function is used to manually decline the assignment of\r | |
385 | IPv6 addresses, which have been already used by another node. If all\r | |
386 | IPv6 addresses of the configured IA are declined through this function,\r | |
387 | the state of the IA will switch through Dhcp6Declining to Dhcp6Init.\r | |
388 | Otherwise, the state of the IA will restore to Dhcp6Bound after the\r | |
389 | declining process. The Decline() can only be called when the IA is in\r | |
390 | Dhcp6Bound state. If the EFI_DHCP6_CONFIG_DATA.IaInfoEvent is NULL,\r | |
391 | this function is a blocking operation. It will return after the\r | |
392 | declining process finishes, or aborted by user.\r | |
393 | \r | |
394 | @param[in] This The pointer to the Dhcp6 protocol.\r | |
395 | @param[in] AddressCount The number of declining addresses.\r | |
396 | @param[in] Addresses The pointer to the buffer stored the declining\r | |
397 | addresses.\r | |
398 | \r | |
399 | @retval EFI_SUCCESS The DHCPv6 decline exchange process completed\r | |
400 | when EFI_DHCP6_CONFIG_DATA.IaInfoEvent was NULL.\r | |
401 | The Dhcp6 instance has sent Decline packet when\r | |
402 | EFI_DHCP6_CONFIG_DATA.IaInfoEvent is not NULL.\r | |
403 | @retval EFI_ACCESS_DENIED The Dhcp6 instance hasn't been configured, or the\r | |
404 | state of the configured IA is not in Dhcp6Bound.\r | |
405 | @retval EFI_ABORTED The DHCPv6 decline exchange process was aborted by the user.\r | |
406 | @retval EFI_NOT_FOUND Any specified IPv6 address is not correlated with\r | |
407 | the configured IA for this instance.\r | |
408 | @retval EFI_INVALID_PARAMETER Some parameter is NULL.\r | |
409 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.\r | |
410 | \r | |
411 | **/\r | |
412 | EFI_STATUS\r | |
413 | EFIAPI\r | |
414 | EfiDhcp6Decline (\r | |
415 | IN EFI_DHCP6_PROTOCOL *This,\r | |
416 | IN UINT32 AddressCount,\r | |
417 | IN EFI_IPv6_ADDRESS *Addresses\r | |
418 | );\r | |
419 | \r | |
420 | /**\r | |
421 | Release one or more addresses associated with the configured Ia\r | |
422 | for the current instance.\r | |
423 | \r | |
424 | The Release() function is used to manually release the one or more\r | |
425 | IPv6 address. If AddressCount is zero, it will release all IPv6\r | |
426 | addresses of the configured IA. If all IPv6 addresses of the IA are\r | |
427 | released through this function, the state of the IA will switch\r | |
428 | through Dhcp6Releasing to Dhcp6Init, otherwise, the state of the\r | |
429 | IA will restore to Dhcp6Bound after the releasing process.\r | |
430 | The Release() can only be called when the IA is in a Dhcp6Bound state.\r | |
431 | If the EFI_DHCP6_CONFIG_DATA.IaInfoEvent is NULL, the function is\r | |
432 | a blocking operation. It will return after the releasing process\r | |
433 | finishes, or aborted by user.\r | |
434 | \r | |
435 | @param[in] This The pointer to the Dhcp6 protocol.\r | |
436 | @param[in] AddressCount The number of releasing addresses.\r | |
437 | @param[in] Addresses The pointer to the buffer stored the releasing\r | |
438 | addresses.\r | |
439 | @retval EFI_SUCCESS The DHCPv6 release exchange process has\r | |
440 | completed when EFI_DHCP6_CONFIG_DATA.IaInfoEvent\r | |
441 | is NULL. The Dhcp6 instance has sent Release\r | |
442 | packet when EFI_DHCP6_CONFIG_DATA.IaInfoEvent\r | |
443 | is not NULL.\r | |
444 | @retval EFI_ACCESS_DENIED The Dhcp6 instance hasn't been configured, or the\r | |
445 | state of the configured IA is not in Dhcp6Bound.\r | |
446 | @retval EFI_ABORTED The DHCPv6 release exchange process was aborted by the user.\r | |
447 | @retval EFI_NOT_FOUND Any specified IPv6 address is not correlated with\r | |
448 | the configured IA for this instance.\r | |
449 | @retval EFI_INVALID_PARAMETER Some parameter is NULL.\r | |
450 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.\r | |
451 | \r | |
452 | **/\r | |
453 | EFI_STATUS\r | |
454 | EFIAPI\r | |
455 | EfiDhcp6Release (\r | |
456 | IN EFI_DHCP6_PROTOCOL *This,\r | |
457 | IN UINT32 AddressCount,\r | |
458 | IN EFI_IPv6_ADDRESS *Addresses\r | |
459 | );\r | |
460 | \r | |
461 | /**\r | |
462 | Parse the option data in the Dhcp6 packet.\r | |
463 | \r | |
464 | The Parse() function is used to retrieve the option list in the DHCPv6 packet.\r | |
465 | \r | |
466 | @param[in] This The pointer to the Dhcp6 protocol.\r | |
467 | @param[in] Packet The pointer to the Dhcp6 packet.\r | |
468 | @param[in, out] OptionCount The number of option in the packet.\r | |
469 | @param[out] PacketOptionList The array of pointers to the each option in the packet.\r | |
470 | \r | |
471 | @retval EFI_SUCCESS The packet was successfully parsed.\r | |
472 | @retval EFI_INVALID_PARAMETER Some parameter is NULL.\r | |
473 | @retval EFI_BUFFER_TOO_SMALL *OptionCount is smaller than the number of options\r | |
474 | that were found in the Packet.\r | |
475 | \r | |
476 | **/\r | |
477 | EFI_STATUS\r | |
478 | EFIAPI\r | |
479 | EfiDhcp6Parse (\r | |
480 | IN EFI_DHCP6_PROTOCOL *This,\r | |
481 | IN EFI_DHCP6_PACKET *Packet,\r | |
482 | IN OUT UINT32 *OptionCount,\r | |
483 | OUT EFI_DHCP6_PACKET_OPTION *PacketOptionList[] OPTIONAL\r | |
484 | );\r | |
485 | \r | |
486 | #endif\r |