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1 | /** @file\r |
2 | Udp6 driver's whole implementation.\r | |
3 | \r | |
216f7970 | 4 | Copyright (c) 2009 - 2012, Intel Corporation. All rights reserved.<BR>\r |
a3bcde70 HT |
5 | \r |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php.\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #include "Udp6Impl.h"\r | |
17 | \r | |
18 | UINT16 mUdp6RandomPort;\r | |
19 | \r | |
20 | /**\r | |
21 | This function checks and timeouts the I/O datagrams holding by the corresponding\r | |
22 | service context.\r | |
23 | \r | |
24 | @param[in] Event The event this function is registered to.\r | |
25 | @param[in] Context The context data registered during the creation of\r | |
26 | the Event.\r | |
27 | \r | |
28 | **/\r | |
29 | VOID\r | |
30 | EFIAPI\r | |
31 | Udp6CheckTimeout (\r | |
32 | IN EFI_EVENT Event,\r | |
33 | IN VOID *Context\r | |
34 | );\r | |
35 | \r | |
36 | /**\r | |
37 | This function finds the udp instance by the specified <Address, Port> pair.\r | |
38 | \r | |
39 | @param[in] InstanceList Pointer to the head of the list linking the udp\r | |
40 | instances.\r | |
41 | @param[in] Address Pointer to the specified IPv6 address.\r | |
42 | @param[in] Port The udp port number.\r | |
43 | \r | |
44 | @retval TRUE The specified <Address, Port> pair is found.\r | |
45 | @retval FALSE Otherwise.\r | |
46 | \r | |
47 | **/\r | |
48 | BOOLEAN\r | |
49 | Udp6FindInstanceByPort (\r | |
50 | IN LIST_ENTRY *InstanceList,\r | |
51 | IN EFI_IPv6_ADDRESS *Address,\r | |
52 | IN UINT16 Port\r | |
53 | );\r | |
54 | \r | |
55 | /**\r | |
56 | This function is the packet transmitting notify function registered to the IpIo\r | |
57 | interface. It's called to signal the udp TxToken when the IpIo layer completes\r | |
58 | transmitting of the udp datagram.\r | |
59 | \r | |
60 | @param[in] Status The completion status of the output udp datagram.\r | |
61 | @param[in] Context Pointer to the context data.\r | |
62 | @param[in] Sender Specify a EFI_IP6_PROTOCOL for sending.\r | |
63 | @param[in] NotifyData Pointer to the notify data.\r | |
64 | \r | |
65 | **/\r | |
66 | VOID\r | |
67 | EFIAPI\r | |
68 | Udp6DgramSent (\r | |
69 | IN EFI_STATUS Status,\r | |
70 | IN VOID *Context,\r | |
71 | IN IP_IO_IP_PROTOCOL Sender,\r | |
72 | IN VOID *NotifyData\r | |
73 | );\r | |
74 | \r | |
75 | /**\r | |
76 | This function processes the received datagram passed up by the IpIo layer.\r | |
77 | \r | |
78 | @param[in] Status The status of this udp datagram.\r | |
79 | @param[in] IcmpError The IcmpError code, only available when Status is\r | |
80 | EFI_ICMP_ERROR.\r | |
81 | @param[in] NetSession Pointer to the EFI_NET_SESSION_DATA.\r | |
82 | @param[in] Packet Pointer to the NET_BUF containing the received udp\r | |
83 | datagram.\r | |
84 | @param[in] Context Pointer to the context data.\r | |
85 | \r | |
86 | **/\r | |
87 | VOID\r | |
88 | EFIAPI\r | |
89 | Udp6DgramRcvd (\r | |
90 | IN EFI_STATUS Status,\r | |
91 | IN UINT8 IcmpError,\r | |
92 | IN EFI_NET_SESSION_DATA *NetSession,\r | |
93 | IN NET_BUF *Packet,\r | |
94 | IN VOID *Context\r | |
95 | );\r | |
96 | \r | |
97 | /**\r | |
98 | This function cancle the token specified by Arg in the Map.\r | |
99 | \r | |
100 | @param[in] Map Pointer to the NET_MAP.\r | |
101 | @param[in] Item Pointer to the NET_MAP_ITEM.\r | |
102 | @param[in] Arg Pointer to the token to be cancelled, if NULL, all\r | |
103 | the tokens in this Map will be cancelled.\r | |
104 | This parameter is optional and may be NULL.\r | |
105 | \r | |
106 | @retval EFI_SUCCESS The token is cancelled if Arg is NULL or the token\r | |
107 | is not the same as that in the Item if Arg is not\r | |
108 | NULL.\r | |
109 | @retval EFI_ABORTED Arg is not NULL, and the token specified by Arg is\r | |
110 | cancelled.\r | |
111 | \r | |
112 | **/\r | |
113 | EFI_STATUS\r | |
114 | EFIAPI\r | |
115 | Udp6CancelTokens (\r | |
116 | IN NET_MAP *Map,\r | |
117 | IN NET_MAP_ITEM *Item,\r | |
118 | IN VOID *Arg OPTIONAL\r | |
119 | );\r | |
120 | \r | |
121 | /**\r | |
122 | This function check if the received udp datagram matches with the Instance.\r | |
123 | \r | |
124 | @param[in] Instance Pointer to the udp instance context data.\r | |
125 | @param[in] Udp6Session Pointer to the EFI_UDP6_SESSION_DATA abstracted\r | |
126 | from the received udp datagram.\r | |
127 | \r | |
128 | @retval TRUE The udp datagram matches the receiving requirements of the Instance.\r | |
129 | @retval FALSE The udp datagram doe not match the receiving requirements of the Instance.\r | |
130 | \r | |
131 | **/\r | |
132 | BOOLEAN\r | |
133 | Udp6MatchDgram (\r | |
134 | IN UDP6_INSTANCE_DATA *Instance,\r | |
135 | IN EFI_UDP6_SESSION_DATA *Udp6Session\r | |
136 | );\r | |
137 | \r | |
138 | /**\r | |
139 | This function removes the Wrap specified by Context and releases relevant resources.\r | |
140 | \r | |
141 | @param[in] Event The Event this notify function is registered to.\r | |
142 | @param[in] Context Pointer to the context data.\r | |
143 | \r | |
144 | **/\r | |
145 | VOID\r | |
146 | EFIAPI\r | |
147 | Udp6RecycleRxDataWrap (\r | |
148 | IN EFI_EVENT Event,\r | |
149 | IN VOID *Context\r | |
150 | );\r | |
151 | \r | |
152 | /**\r | |
153 | This function wraps the Packet into RxData.\r | |
154 | \r | |
155 | @param[in] Instance Pointer to the instance context data.\r | |
156 | @param[in] Packet Pointer to the buffer containing the received\r | |
157 | datagram.\r | |
158 | @param[in] RxData Pointer to the EFI_UDP6_RECEIVE_DATA of this\r | |
159 | datagram.\r | |
160 | \r | |
161 | @return Pointer to the structure wrapping the RxData and the Packet.\r | |
162 | \r | |
163 | **/\r | |
164 | UDP6_RXDATA_WRAP *\r | |
165 | Udp6WrapRxData (\r | |
166 | IN UDP6_INSTANCE_DATA *Instance,\r | |
167 | IN NET_BUF *Packet,\r | |
168 | IN EFI_UDP6_RECEIVE_DATA *RxData\r | |
169 | );\r | |
170 | \r | |
171 | /**\r | |
172 | This function enqueues the received datagram into the instances' receiving queues.\r | |
173 | \r | |
174 | @param[in] Udp6Service Pointer to the udp service context data.\r | |
175 | @param[in] Packet Pointer to the buffer containing the received\r | |
176 | datagram.\r | |
177 | @param[in] RxData Pointer to the EFI_UDP6_RECEIVE_DATA of this\r | |
178 | datagram.\r | |
179 | \r | |
180 | @return The times this datagram is enqueued.\r | |
181 | \r | |
182 | **/\r | |
183 | UINTN\r | |
184 | Udp6EnqueueDgram (\r | |
185 | IN UDP6_SERVICE_DATA *Udp6Service,\r | |
186 | IN NET_BUF *Packet,\r | |
187 | IN EFI_UDP6_RECEIVE_DATA *RxData\r | |
188 | );\r | |
189 | \r | |
190 | /**\r | |
191 | This function delivers the datagrams enqueued in the instances.\r | |
192 | \r | |
193 | @param[in] Udp6Service Pointer to the udp service context data.\r | |
194 | \r | |
195 | **/\r | |
196 | VOID\r | |
197 | Udp6DeliverDgram (\r | |
198 | IN UDP6_SERVICE_DATA *Udp6Service\r | |
199 | );\r | |
200 | \r | |
201 | /**\r | |
202 | This function demultiplexes the received udp datagram to the apropriate instances.\r | |
203 | \r | |
204 | @param[in] Udp6Service Pointer to the udp service context data.\r | |
205 | @param[in] NetSession Pointer to the EFI_NET_SESSION_DATA abstrated from\r | |
206 | the received datagram.\r | |
207 | @param[in] Packet Pointer to the buffer containing the received udp\r | |
208 | datagram.\r | |
209 | \r | |
210 | **/\r | |
211 | VOID\r | |
212 | Udp6Demultiplex (\r | |
213 | IN UDP6_SERVICE_DATA *Udp6Service,\r | |
214 | IN EFI_NET_SESSION_DATA *NetSession,\r | |
215 | IN NET_BUF *Packet\r | |
216 | );\r | |
217 | \r | |
218 | /**\r | |
219 | This function handles the received Icmp Error message and demultiplexes it to the\r | |
220 | instance.\r | |
221 | \r | |
222 | @param[in] Udp6Service Pointer to the udp service context data.\r | |
223 | @param[in] IcmpError The icmp error code.\r | |
224 | @param[in] NetSession Pointer to the EFI_NET_SESSION_DATA abstracted\r | |
225 | from the received Icmp Error packet.\r | |
226 | @param[in, out] Packet Pointer to the Icmp Error packet.\r | |
227 | \r | |
228 | **/\r | |
229 | VOID\r | |
230 | Udp6IcmpHandler (\r | |
231 | IN UDP6_SERVICE_DATA *Udp6Service,\r | |
232 | IN UINT8 IcmpError,\r | |
233 | IN EFI_NET_SESSION_DATA *NetSession,\r | |
234 | IN OUT NET_BUF *Packet\r | |
235 | );\r | |
236 | \r | |
237 | /**\r | |
238 | This function builds and sends out a icmp port unreachable message.\r | |
239 | \r | |
240 | @param[in] IpIo Pointer to the IP_IO instance.\r | |
241 | @param[in] NetSession Pointer to the EFI_NET_SESSION_DATA of the packet\r | |
242 | causes this icmp error message.\r | |
243 | @param[in] Udp6Header Pointer to the udp header of the datagram causes\r | |
244 | this icmp error message.\r | |
245 | \r | |
246 | **/\r | |
247 | VOID\r | |
248 | Udp6SendPortUnreach (\r | |
249 | IN IP_IO *IpIo,\r | |
250 | IN EFI_NET_SESSION_DATA *NetSession,\r | |
251 | IN VOID *Udp6Header\r | |
252 | );\r | |
253 | \r | |
254 | /**\r | |
255 | Find the key in the netmap\r | |
256 | \r | |
257 | @param[in] Map The netmap to search within.\r | |
258 | @param[in] Key The key to search.\r | |
259 | \r | |
260 | @return The point to the item contains the Key, or NULL if Key isn't in the map.\r | |
261 | \r | |
262 | **/\r | |
263 | NET_MAP_ITEM *\r | |
264 | Udp6MapMultiCastAddr (\r | |
265 | IN NET_MAP *Map,\r | |
266 | IN VOID *Key\r | |
267 | );\r | |
268 | \r | |
269 | /**\r | |
270 | Create the Udp service context data.\r | |
271 | \r | |
272 | @param[in] Udp6Service Pointer to the UDP6_SERVICE_DATA.\r | |
273 | @param[in] ImageHandle The image handle of this udp6 driver.\r | |
274 | @param[in] ControllerHandle The controller handle this udp6 driver binds on.\r | |
275 | \r | |
276 | @retval EFI_SUCCESS The udp6 service context data was created and\r | |
277 | initialized.\r | |
278 | @retval EFI_OUT_OF_RESOURCES Cannot allocate memory.\r | |
279 | @retval Others An error condition occurred.\r | |
280 | \r | |
281 | **/\r | |
282 | EFI_STATUS\r | |
283 | Udp6CreateService (\r | |
284 | IN UDP6_SERVICE_DATA *Udp6Service,\r | |
285 | IN EFI_HANDLE ImageHandle,\r | |
286 | IN EFI_HANDLE ControllerHandle\r | |
287 | )\r | |
288 | {\r | |
289 | EFI_STATUS Status;\r | |
290 | IP_IO_OPEN_DATA OpenData;\r | |
291 | \r | |
292 | ZeroMem (Udp6Service, sizeof (UDP6_SERVICE_DATA));\r | |
293 | \r | |
294 | Udp6Service->Signature = UDP6_SERVICE_DATA_SIGNATURE;\r | |
295 | Udp6Service->ServiceBinding = mUdp6ServiceBinding;\r | |
296 | Udp6Service->ImageHandle = ImageHandle;\r | |
297 | Udp6Service->ControllerHandle = ControllerHandle;\r | |
298 | Udp6Service->ChildrenNumber = 0;\r | |
299 | \r | |
300 | InitializeListHead (&Udp6Service->ChildrenList);\r | |
301 | \r | |
302 | //\r | |
303 | // Create the IpIo for this service context.\r | |
304 | //\r | |
305 | Udp6Service->IpIo = IpIoCreate (ImageHandle, ControllerHandle, IP_VERSION_6);\r | |
306 | if (Udp6Service->IpIo == NULL) {\r | |
307 | return EFI_OUT_OF_RESOURCES;\r | |
308 | }\r | |
309 | \r | |
310 | //\r | |
311 | // Set the OpenData used to open the IpIo.\r | |
312 | //\r | |
313 | CopyMem (\r | |
314 | &OpenData.IpConfigData.Ip6CfgData,\r | |
315 | &mIp6IoDefaultIpConfigData,\r | |
316 | sizeof (EFI_IP6_CONFIG_DATA)\r | |
317 | );\r | |
318 | OpenData.RcvdContext = (VOID *) Udp6Service;\r | |
319 | OpenData.SndContext = NULL;\r | |
320 | OpenData.PktRcvdNotify = Udp6DgramRcvd;\r | |
321 | OpenData.PktSentNotify = Udp6DgramSent;\r | |
322 | \r | |
323 | //\r | |
324 | // Configure and start the IpIo.\r | |
325 | //\r | |
326 | Status = IpIoOpen (Udp6Service->IpIo, &OpenData);\r | |
327 | if (EFI_ERROR (Status)) {\r | |
328 | goto ON_ERROR;\r | |
329 | }\r | |
330 | \r | |
331 | //\r | |
332 | // Create the event for Udp timeout checking.\r | |
333 | //\r | |
334 | Status = gBS->CreateEvent (\r | |
335 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
336 | TPL_CALLBACK,\r | |
337 | Udp6CheckTimeout,\r | |
338 | Udp6Service,\r | |
339 | &Udp6Service->TimeoutEvent\r | |
340 | );\r | |
341 | if (EFI_ERROR (Status)) {\r | |
342 | goto ON_ERROR;\r | |
343 | }\r | |
344 | \r | |
345 | //\r | |
346 | // Start the timeout timer event.\r | |
347 | //\r | |
348 | Status = gBS->SetTimer (\r | |
349 | Udp6Service->TimeoutEvent,\r | |
350 | TimerPeriodic,\r | |
351 | UDP6_TIMEOUT_INTERVAL\r | |
352 | );\r | |
353 | if (EFI_ERROR (Status)) {\r | |
354 | goto ON_ERROR;\r | |
355 | }\r | |
356 | \r | |
357 | return EFI_SUCCESS;\r | |
358 | \r | |
359 | ON_ERROR:\r | |
360 | \r | |
361 | if (Udp6Service->TimeoutEvent != NULL) {\r | |
362 | gBS->CloseEvent (Udp6Service->TimeoutEvent);\r | |
363 | }\r | |
364 | \r | |
365 | IpIoDestroy (Udp6Service->IpIo);\r | |
216f7970 | 366 | Udp6Service->IpIo = NULL;\r |
367 | \r | |
a3bcde70 HT |
368 | return Status;\r |
369 | }\r | |
370 | \r | |
371 | \r | |
372 | /**\r | |
373 | Clean the Udp service context data.\r | |
374 | \r | |
375 | @param[in, out] Udp6Service Pointer to the UDP6_SERVICE_DATA.\r | |
376 | \r | |
377 | **/\r | |
378 | VOID\r | |
379 | Udp6CleanService (\r | |
380 | IN OUT UDP6_SERVICE_DATA *Udp6Service\r | |
381 | )\r | |
382 | {\r | |
383 | //\r | |
384 | // Close the TimeoutEvent timer.\r | |
385 | //\r | |
386 | gBS->CloseEvent (Udp6Service->TimeoutEvent);\r | |
387 | \r | |
388 | //\r | |
389 | // Destroy the IpIo.\r | |
390 | //\r | |
391 | IpIoDestroy (Udp6Service->IpIo);\r | |
216f7970 | 392 | Udp6Service->IpIo = NULL;\r |
393 | \r | |
394 | ZeroMem (Udp6Service, sizeof (UDP6_SERVICE_DATA));\r | |
a3bcde70 HT |
395 | }\r |
396 | \r | |
397 | \r | |
398 | /**\r | |
399 | This function checks and times out the I/O datagrams listed in the\r | |
400 | UDP6_SERVICE_DATA which is specified by the input parameter Context.\r | |
401 | \r | |
402 | \r | |
403 | @param[in] Event The event this function registered to.\r | |
404 | @param[in] Context The context data registered during the creation of\r | |
405 | the Event.\r | |
406 | \r | |
407 | **/\r | |
408 | VOID\r | |
409 | EFIAPI\r | |
410 | Udp6CheckTimeout (\r | |
411 | IN EFI_EVENT Event,\r | |
412 | IN VOID *Context\r | |
413 | )\r | |
414 | {\r | |
415 | UDP6_SERVICE_DATA *Udp6Service;\r | |
416 | LIST_ENTRY *Entry;\r | |
417 | UDP6_INSTANCE_DATA *Instance;\r | |
418 | LIST_ENTRY *WrapEntry;\r | |
419 | LIST_ENTRY *NextEntry;\r | |
420 | UDP6_RXDATA_WRAP *Wrap;\r | |
421 | \r | |
422 | Udp6Service = (UDP6_SERVICE_DATA *) Context;\r | |
423 | NET_CHECK_SIGNATURE (Udp6Service, UDP6_SERVICE_DATA_SIGNATURE);\r | |
424 | \r | |
425 | NET_LIST_FOR_EACH (Entry, &Udp6Service->ChildrenList) {\r | |
426 | //\r | |
427 | // Iterate all the instances belonging to this service context.\r | |
428 | //\r | |
429 | Instance = NET_LIST_USER_STRUCT (Entry, UDP6_INSTANCE_DATA, Link);\r | |
430 | NET_CHECK_SIGNATURE (Instance, UDP6_INSTANCE_DATA_SIGNATURE);\r | |
431 | \r | |
432 | if (!Instance->Configured || (Instance->ConfigData.ReceiveTimeout == 0)) {\r | |
433 | //\r | |
434 | // Skip this instance if it's not configured or no receive timeout.\r | |
435 | //\r | |
436 | continue;\r | |
437 | }\r | |
438 | \r | |
439 | NET_LIST_FOR_EACH_SAFE (WrapEntry, NextEntry, &Instance->RcvdDgramQue) {\r | |
440 | //\r | |
441 | // Iterate all the rxdatas belonging to this udp instance.\r | |
442 | //\r | |
443 | Wrap = NET_LIST_USER_STRUCT (WrapEntry, UDP6_RXDATA_WRAP, Link);\r | |
444 | \r | |
445 | if (Wrap->TimeoutTick < UDP6_TIMEOUT_INTERVAL / 10) {\r | |
446 | //\r | |
447 | // Remove this RxData if it timeouts.\r | |
448 | //\r | |
449 | Udp6RecycleRxDataWrap (NULL, (VOID *) Wrap);\r | |
450 | } else {\r | |
451 | Wrap->TimeoutTick -= UDP6_TIMEOUT_INTERVAL / 10;\r | |
452 | }\r | |
453 | }\r | |
454 | }\r | |
455 | }\r | |
456 | \r | |
457 | \r | |
458 | /**\r | |
459 | This function intializes the new created udp instance.\r | |
460 | \r | |
461 | @param[in] Udp6Service Pointer to the UDP6_SERVICE_DATA.\r | |
462 | @param[in, out] Instance Pointer to the un-initialized UDP6_INSTANCE_DATA.\r | |
463 | \r | |
464 | **/\r | |
465 | VOID\r | |
466 | Udp6InitInstance (\r | |
467 | IN UDP6_SERVICE_DATA *Udp6Service,\r | |
468 | IN OUT UDP6_INSTANCE_DATA *Instance\r | |
469 | )\r | |
470 | {\r | |
471 | //\r | |
472 | // Set the signature.\r | |
473 | //\r | |
474 | Instance->Signature = UDP6_INSTANCE_DATA_SIGNATURE;\r | |
475 | \r | |
476 | //\r | |
477 | // Init the lists.\r | |
478 | //\r | |
479 | InitializeListHead (&Instance->Link);\r | |
480 | InitializeListHead (&Instance->RcvdDgramQue);\r | |
481 | InitializeListHead (&Instance->DeliveredDgramQue);\r | |
482 | \r | |
483 | //\r | |
484 | // Init the NET_MAPs.\r | |
485 | //\r | |
486 | NetMapInit (&Instance->TxTokens);\r | |
487 | NetMapInit (&Instance->RxTokens);\r | |
488 | NetMapInit (&Instance->McastIps);\r | |
489 | \r | |
490 | //\r | |
491 | // Save the pointer to the UDP6_SERVICE_DATA, and initialize other members.\r | |
492 | //\r | |
493 | Instance->Udp6Service = Udp6Service;\r | |
494 | CopyMem (&Instance->Udp6Proto, &mUdp6Protocol, sizeof (EFI_UDP6_PROTOCOL));\r | |
495 | Instance->IcmpError = EFI_SUCCESS;\r | |
496 | Instance->Configured = FALSE;\r | |
497 | Instance->IsNoMapping = FALSE;\r | |
216f7970 | 498 | Instance->InDestroy = FALSE;\r |
a3bcde70 HT |
499 | }\r |
500 | \r | |
501 | \r | |
502 | /**\r | |
503 | This function cleans the udp instance.\r | |
504 | \r | |
505 | @param[in, out] Instance Pointer to the UDP6_INSTANCE_DATA to clean.\r | |
506 | \r | |
507 | **/\r | |
508 | VOID\r | |
509 | Udp6CleanInstance (\r | |
510 | IN OUT UDP6_INSTANCE_DATA *Instance\r | |
511 | )\r | |
512 | {\r | |
513 | NetMapClean (&Instance->McastIps);\r | |
514 | NetMapClean (&Instance->RxTokens);\r | |
515 | NetMapClean (&Instance->TxTokens);\r | |
516 | }\r | |
517 | \r | |
518 | \r | |
519 | /**\r | |
520 | This function finds the udp instance by the specified <Address, Port> pair.\r | |
521 | \r | |
522 | @param[in] InstanceList Pointer to the head of the list linking the udp\r | |
523 | instances.\r | |
524 | @param[in] Address Pointer to the specified IPv6 address.\r | |
525 | @param[in] Port The udp port number.\r | |
526 | \r | |
527 | @retval TRUE The specified <Address, Port> pair is found.\r | |
528 | @retval FALSE Otherwise.\r | |
529 | \r | |
530 | **/\r | |
531 | BOOLEAN\r | |
532 | Udp6FindInstanceByPort (\r | |
533 | IN LIST_ENTRY *InstanceList,\r | |
534 | IN EFI_IPv6_ADDRESS *Address,\r | |
535 | IN UINT16 Port\r | |
536 | )\r | |
537 | {\r | |
538 | LIST_ENTRY *Entry;\r | |
539 | UDP6_INSTANCE_DATA *Instance;\r | |
540 | EFI_UDP6_CONFIG_DATA *ConfigData;\r | |
541 | \r | |
542 | NET_LIST_FOR_EACH (Entry, InstanceList) {\r | |
543 | //\r | |
544 | // Iterate all the udp instances.\r | |
545 | //\r | |
546 | Instance = NET_LIST_USER_STRUCT (Entry, UDP6_INSTANCE_DATA, Link);\r | |
547 | ConfigData = &Instance->ConfigData;\r | |
548 | \r | |
549 | if (!Instance->Configured || ConfigData->AcceptAnyPort) {\r | |
550 | //\r | |
551 | // If the instance is not configured, or the configdata of the instance indicates\r | |
552 | // this instance accepts any port, skip it.\r | |
553 | //\r | |
554 | continue;\r | |
555 | }\r | |
556 | \r | |
557 | if (EFI_IP6_EQUAL (&ConfigData->StationAddress, Address) &&\r | |
558 | (ConfigData->StationPort == Port)\r | |
559 | ) {\r | |
560 | //\r | |
561 | // If both the address and the port are the same, return TRUE.\r | |
562 | //\r | |
563 | return TRUE;\r | |
564 | }\r | |
565 | }\r | |
566 | \r | |
567 | //\r | |
568 | // Return FALSE when matching fails.\r | |
569 | //\r | |
570 | return FALSE;\r | |
571 | }\r | |
572 | \r | |
573 | \r | |
574 | /**\r | |
575 | This function tries to bind the udp instance according to the configured port\r | |
576 | allocation stragety.\r | |
577 | \r | |
578 | @param[in] InstanceList Pointer to the head of the list linking the udp\r | |
579 | instances.\r | |
580 | @param[in] ConfigData Pointer to the ConfigData of the instance to be\r | |
581 | bound.\r | |
582 | \r | |
583 | @retval EFI_SUCCESS The bound operation completed successfully.\r | |
584 | @retval EFI_ACCESS_DENIED The <Address, Port> specified by the ConfigData is\r | |
585 | already used by other instance.\r | |
586 | @retval EFI_OUT_OF_RESOURCES No available port resources.\r | |
587 | \r | |
588 | **/\r | |
589 | EFI_STATUS\r | |
590 | Udp6Bind (\r | |
591 | IN LIST_ENTRY *InstanceList,\r | |
592 | IN EFI_UDP6_CONFIG_DATA *ConfigData\r | |
593 | )\r | |
594 | {\r | |
595 | EFI_IPv6_ADDRESS *StationAddress;\r | |
596 | UINT16 StartPort;\r | |
597 | \r | |
598 | if (ConfigData->AcceptAnyPort) {\r | |
599 | return EFI_SUCCESS;\r | |
600 | }\r | |
601 | \r | |
602 | StationAddress = &ConfigData->StationAddress;\r | |
603 | \r | |
604 | if (ConfigData->StationPort != 0) {\r | |
605 | \r | |
606 | if (!ConfigData->AllowDuplicatePort &&\r | |
607 | Udp6FindInstanceByPort (InstanceList, StationAddress, ConfigData->StationPort)\r | |
608 | ) {\r | |
609 | //\r | |
610 | // Do not allow duplicate ports and the port is already used by other instance.\r | |
611 | //\r | |
612 | return EFI_ACCESS_DENIED;\r | |
613 | }\r | |
614 | } else {\r | |
615 | //\r | |
616 | // Select a random port for this instance.\r | |
617 | //\r | |
618 | if (ConfigData->AllowDuplicatePort) {\r | |
619 | //\r | |
620 | // Just pick up the random port if the instance allows duplicate port.\r | |
621 | //\r | |
622 | ConfigData->StationPort = mUdp6RandomPort;\r | |
623 | } else {\r | |
624 | \r | |
625 | StartPort = mUdp6RandomPort;\r | |
626 | \r | |
627 | while (Udp6FindInstanceByPort (InstanceList, StationAddress, mUdp6RandomPort)) {\r | |
628 | \r | |
629 | mUdp6RandomPort++;\r | |
630 | if (mUdp6RandomPort == 0) {\r | |
631 | mUdp6RandomPort = UDP6_PORT_KNOWN;\r | |
632 | }\r | |
633 | \r | |
634 | if (mUdp6RandomPort == StartPort) {\r | |
635 | //\r | |
636 | // No available port.\r | |
637 | //\r | |
638 | return EFI_OUT_OF_RESOURCES;\r | |
639 | }\r | |
640 | }\r | |
641 | \r | |
642 | ConfigData->StationPort = mUdp6RandomPort;\r | |
643 | }\r | |
644 | \r | |
645 | mUdp6RandomPort++;\r | |
646 | if (mUdp6RandomPort == 0) {\r | |
647 | mUdp6RandomPort = UDP6_PORT_KNOWN;\r | |
648 | }\r | |
649 | }\r | |
650 | return EFI_SUCCESS;\r | |
651 | }\r | |
652 | \r | |
653 | \r | |
654 | /**\r | |
655 | This function is used to check whether the NewConfigData has any un-reconfigurable\r | |
656 | parameters changed compared to the OldConfigData.\r | |
657 | \r | |
658 | @param[in] OldConfigData Pointer to the current ConfigData the udp instance\r | |
659 | uses.\r | |
660 | @param[in] NewConfigData Pointer to the new ConfigData.\r | |
661 | \r | |
662 | @retval TRUE The instance is reconfigurable according to the NewConfigData.\r | |
663 | @retval FALSE Otherwise.\r | |
664 | \r | |
665 | **/\r | |
666 | BOOLEAN\r | |
667 | Udp6IsReconfigurable (\r | |
668 | IN EFI_UDP6_CONFIG_DATA *OldConfigData,\r | |
669 | IN EFI_UDP6_CONFIG_DATA *NewConfigData\r | |
670 | )\r | |
671 | {\r | |
672 | if ((NewConfigData->AcceptAnyPort != OldConfigData->AcceptAnyPort) ||\r | |
673 | (NewConfigData->AcceptPromiscuous != OldConfigData->AcceptPromiscuous) ||\r | |
674 | (NewConfigData->AllowDuplicatePort != OldConfigData->AllowDuplicatePort)\r | |
675 | ) {\r | |
676 | //\r | |
677 | // The receiving filter parameters cannot be changed.\r | |
678 | //\r | |
679 | return FALSE;\r | |
680 | }\r | |
681 | \r | |
682 | if ((!NewConfigData->AcceptAnyPort) &&\r | |
683 | (NewConfigData->StationPort != OldConfigData->StationPort)\r | |
684 | ) {\r | |
685 | //\r | |
686 | // The port is not changeable.\r | |
687 | //\r | |
688 | return FALSE;\r | |
689 | }\r | |
690 | \r | |
691 | if (!EFI_IP6_EQUAL (&NewConfigData->StationAddress, &OldConfigData->StationAddress)) {\r | |
692 | //\r | |
693 | // The StationAddress is not the same.\r | |
694 | //\r | |
695 | return FALSE;\r | |
696 | }\r | |
697 | \r | |
698 | \r | |
699 | if (!EFI_IP6_EQUAL (&NewConfigData->RemoteAddress, &OldConfigData->RemoteAddress)) {\r | |
700 | //\r | |
701 | // The remoteaddress is not the same.\r | |
702 | //\r | |
703 | return FALSE;\r | |
704 | }\r | |
705 | \r | |
706 | if (!NetIp6IsUnspecifiedAddr (&NewConfigData->RemoteAddress) &&\r | |
707 | (NewConfigData->RemotePort != OldConfigData->RemotePort)\r | |
708 | ) {\r | |
709 | //\r | |
710 | // The RemotePort differs if it's designated in the configdata.\r | |
711 | //\r | |
712 | return FALSE;\r | |
713 | }\r | |
714 | \r | |
715 | //\r | |
716 | // All checks pass, return TRUE.\r | |
717 | //\r | |
718 | return TRUE;\r | |
719 | }\r | |
720 | \r | |
721 | \r | |
722 | /**\r | |
723 | This function builds the Ip6 configdata from the Udp6ConfigData.\r | |
724 | \r | |
725 | @param[in] Udp6ConfigData Pointer to the EFI_UDP6_CONFIG_DATA.\r | |
726 | @param[in, out] Ip6ConfigData Pointer to the EFI_IP6_CONFIG_DATA.\r | |
727 | \r | |
728 | **/\r | |
729 | VOID\r | |
730 | Udp6BuildIp6ConfigData (\r | |
731 | IN EFI_UDP6_CONFIG_DATA *Udp6ConfigData,\r | |
732 | IN OUT EFI_IP6_CONFIG_DATA *Ip6ConfigData\r | |
733 | )\r | |
734 | {\r | |
735 | CopyMem (\r | |
736 | Ip6ConfigData,\r | |
737 | &mIp6IoDefaultIpConfigData,\r | |
738 | sizeof (EFI_IP6_CONFIG_DATA)\r | |
739 | );\r | |
740 | Ip6ConfigData->DefaultProtocol = EFI_IP_PROTO_UDP;\r | |
741 | Ip6ConfigData->AcceptPromiscuous = Udp6ConfigData->AcceptPromiscuous;\r | |
742 | IP6_COPY_ADDRESS (&Ip6ConfigData->StationAddress, &Udp6ConfigData->StationAddress);\r | |
743 | IP6_COPY_ADDRESS (&Ip6ConfigData->DestinationAddress, &Udp6ConfigData->RemoteAddress);\r | |
744 | //\r | |
745 | // Use the -1 magic number to disable the receiving process of the ip instance.\r | |
746 | //\r | |
747 | Ip6ConfigData->ReceiveTimeout = (UINT32) (-1);\r | |
748 | }\r | |
749 | \r | |
750 | \r | |
751 | /**\r | |
752 | This function validates the TxToken. It returns the error code according to the spec.\r | |
753 | \r | |
754 | @param[in] Instance Pointer to the udp instance context data.\r | |
755 | @param[in] TxToken Pointer to the token to be checked.\r | |
756 | \r | |
757 | @retval EFI_SUCCESS The TxToken is valid.\r | |
758 | @retval EFI_INVALID_PARAMETER One or more of the following are TRUE:\r | |
759 | Token.Event is NULL;\r | |
760 | Token.Packet.TxData is NULL;\r | |
761 | Token.Packet.TxData.FragmentCount is zero;\r | |
762 | Token.Packet.TxData.DataLength is not equal to the\r | |
763 | sum of fragment lengths;\r | |
764 | One or more of the\r | |
765 | Token.Packet.TxData.FragmentTable[].FragmentLength\r | |
766 | fields is zero;\r | |
767 | One or more of the\r | |
768 | Token.Packet.TxData.FragmentTable[].FragmentBuffer\r | |
769 | fields is NULL;\r | |
770 | UdpSessionData.DestinationAddress are not valid\r | |
771 | unicast IPv6 addresses if the UdpSessionData is\r | |
772 | not NULL;\r | |
773 | UdpSessionData.DestinationPort and\r | |
774 | ConfigData.RemotePort are all zero if the\r | |
775 | UdpSessionData is not NULL.\r | |
776 | @retval EFI_BAD_BUFFER_SIZE The data length is greater than the maximum UDP\r | |
777 | packet size.\r | |
778 | \r | |
779 | **/\r | |
780 | EFI_STATUS\r | |
781 | Udp6ValidateTxToken (\r | |
782 | IN UDP6_INSTANCE_DATA *Instance,\r | |
783 | IN EFI_UDP6_COMPLETION_TOKEN *TxToken\r | |
784 | )\r | |
785 | {\r | |
786 | EFI_UDP6_TRANSMIT_DATA *TxData;\r | |
787 | UINT32 Index;\r | |
788 | UINT32 TotalLen;\r | |
789 | EFI_UDP6_CONFIG_DATA *ConfigData;\r | |
790 | EFI_UDP6_SESSION_DATA *UdpSessionData;\r | |
791 | \r | |
792 | \r | |
793 | if (TxToken->Event == NULL) {\r | |
794 | return EFI_INVALID_PARAMETER;\r | |
795 | }\r | |
796 | \r | |
797 | TxData = TxToken->Packet.TxData;\r | |
798 | \r | |
799 | if ((TxData == NULL) || (TxData->FragmentCount == 0)) {\r | |
800 | return EFI_INVALID_PARAMETER;\r | |
801 | }\r | |
802 | \r | |
803 | TotalLen = 0;\r | |
804 | for (Index = 0; Index < TxData->FragmentCount; Index++) {\r | |
805 | \r | |
806 | if ((TxData->FragmentTable[Index].FragmentBuffer == NULL) ||\r | |
807 | (TxData->FragmentTable[Index].FragmentLength == 0)\r | |
808 | ) {\r | |
809 | //\r | |
810 | // If the FragmentBuffer is NULL, or the FragmentLeng is zero.\r | |
811 | //\r | |
812 | return EFI_INVALID_PARAMETER;\r | |
813 | }\r | |
814 | \r | |
815 | TotalLen += TxData->FragmentTable[Index].FragmentLength;\r | |
816 | }\r | |
817 | \r | |
818 | if (TotalLen != TxData->DataLength) {\r | |
819 | //\r | |
820 | // The TotalLen calculated by adding all the FragmentLeng doesn't equal to the\r | |
821 | // DataLength.\r | |
822 | //\r | |
823 | return EFI_INVALID_PARAMETER;\r | |
824 | }\r | |
825 | \r | |
826 | ConfigData = &Instance->ConfigData;\r | |
827 | UdpSessionData = TxData->UdpSessionData;\r | |
828 | \r | |
829 | if (UdpSessionData != NULL) {\r | |
830 | \r | |
831 | if ((UdpSessionData->DestinationPort == 0) && (ConfigData->RemotePort == 0)) {\r | |
832 | //\r | |
833 | // Ambiguous; no avalaible DestinationPort for this token.\r | |
834 | //\r | |
835 | return EFI_INVALID_PARAMETER;\r | |
836 | }\r | |
837 | \r | |
838 | if (NetIp6IsUnspecifiedAddr (&UdpSessionData->DestinationAddress) &&\r | |
839 | NetIp6IsUnspecifiedAddr (&ConfigData->RemoteAddress)\r | |
840 | ) {\r | |
841 | //\r | |
842 | // The DestinationAddress is not specificed.\r | |
843 | //\r | |
844 | return EFI_INVALID_PARAMETER;\r | |
845 | }\r | |
846 | \r | |
847 | if (!NetIp6IsUnspecifiedAddr (&UdpSessionData->DestinationAddress) &&\r | |
848 | !NetIp6IsUnspecifiedAddr (&ConfigData->RemoteAddress)\r | |
849 | ) {\r | |
850 | //\r | |
851 | // The ConfigData.RemoteAddress is not zero and the UdpSessionData.DestinationAddress\r | |
852 | // is not zero too.\r | |
853 | //\r | |
854 | return EFI_INVALID_PARAMETER;\r | |
855 | }\r | |
856 | } else if (NetIp6IsUnspecifiedAddr (&ConfigData->RemoteAddress)) {\r | |
857 | //\r | |
858 | // The configured RemoteAddress is all zero, and the user doesn't override the\r | |
859 | // destination address.\r | |
860 | //\r | |
861 | return EFI_INVALID_PARAMETER;\r | |
862 | }\r | |
863 | \r | |
864 | if (TxData->DataLength > UDP6_MAX_DATA_SIZE) {\r | |
865 | return EFI_BAD_BUFFER_SIZE;\r | |
866 | }\r | |
867 | \r | |
868 | return EFI_SUCCESS;\r | |
869 | }\r | |
870 | \r | |
871 | \r | |
872 | /**\r | |
873 | This function checks whether the specified Token duplicates the one in the Map.\r | |
874 | \r | |
875 | @param[in] Map Pointer to the NET_MAP.\r | |
876 | @param[in] Item Pointer to the NET_MAP_ITEM contain the pointer to\r | |
877 | the Token.\r | |
878 | @param[in] Context Pointer to the Token to be checked.\r | |
879 | \r | |
880 | @retval EFI_SUCCESS The Token specified by Context differs from the\r | |
881 | one in the Item.\r | |
882 | @retval EFI_ACCESS_DENIED The Token duplicates with the one in the Item.\r | |
883 | \r | |
884 | **/\r | |
885 | EFI_STATUS\r | |
886 | EFIAPI\r | |
887 | Udp6TokenExist (\r | |
888 | IN NET_MAP *Map,\r | |
889 | IN NET_MAP_ITEM *Item,\r | |
890 | IN VOID *Context\r | |
891 | )\r | |
892 | {\r | |
893 | EFI_UDP6_COMPLETION_TOKEN *Token;\r | |
894 | EFI_UDP6_COMPLETION_TOKEN *TokenInItem;\r | |
895 | \r | |
896 | Token = (EFI_UDP6_COMPLETION_TOKEN *) Context;\r | |
897 | TokenInItem = (EFI_UDP6_COMPLETION_TOKEN *) Item->Key;\r | |
898 | \r | |
899 | if ((Token == TokenInItem) || (Token->Event == TokenInItem->Event)) {\r | |
900 | //\r | |
901 | // The Token duplicates with the TokenInItem in case either the two pointers are the\r | |
902 | // same, or the Events of these two tokens are the same.\r | |
903 | //\r | |
904 | return EFI_ACCESS_DENIED;\r | |
905 | }\r | |
906 | \r | |
907 | return EFI_SUCCESS;\r | |
908 | }\r | |
909 | \r | |
910 | \r | |
911 | /**\r | |
912 | This function calculates the checksum for the Packet, utilizing the pre-calculated\r | |
913 | pseudo HeadSum to reduce some overhead.\r | |
914 | \r | |
915 | @param[in] Packet Pointer to the NET_BUF contains the udp datagram.\r | |
916 | @param[in] HeadSum Checksum of the pseudo header, execpt the length\r | |
917 | field.\r | |
918 | \r | |
919 | @return The 16-bit checksum of this udp datagram.\r | |
920 | \r | |
921 | **/\r | |
922 | UINT16\r | |
923 | Udp6Checksum (\r | |
924 | IN NET_BUF *Packet,\r | |
925 | IN UINT16 HeadSum\r | |
926 | )\r | |
927 | {\r | |
928 | UINT16 Checksum;\r | |
929 | \r | |
930 | Checksum = NetbufChecksum (Packet);\r | |
931 | Checksum = NetAddChecksum (Checksum, HeadSum);\r | |
932 | \r | |
933 | Checksum = NetAddChecksum (Checksum, HTONS ((UINT16) Packet->TotalSize));\r | |
934 | Checksum = (UINT16) (~Checksum);\r | |
935 | return Checksum;\r | |
936 | }\r | |
937 | \r | |
938 | \r | |
939 | /**\r | |
940 | This function removes the specified Token from the TokenMap.\r | |
941 | \r | |
942 | @param[in] TokenMap Pointer to the NET_MAP containing the tokens.\r | |
943 | @param[in] Token Pointer to the Token to be removed.\r | |
944 | \r | |
945 | @retval EFI_SUCCESS The specified Token is removed from the TokenMap.\r | |
946 | @retval EFI_NOT_FOUND The specified Token is not found in the TokenMap.\r | |
947 | \r | |
948 | **/\r | |
949 | EFI_STATUS\r | |
950 | Udp6RemoveToken (\r | |
951 | IN NET_MAP *TokenMap,\r | |
952 | IN EFI_UDP6_COMPLETION_TOKEN *Token\r | |
953 | )\r | |
954 | {\r | |
955 | NET_MAP_ITEM *Item;\r | |
956 | \r | |
957 | //\r | |
958 | // Find the Token first.\r | |
959 | //\r | |
960 | Item = NetMapFindKey (TokenMap, (VOID *) Token);\r | |
961 | \r | |
962 | if (Item != NULL) {\r | |
963 | //\r | |
964 | // Remove the token if it's found in the map.\r | |
965 | //\r | |
966 | NetMapRemoveItem (TokenMap, Item, NULL);\r | |
967 | \r | |
968 | return EFI_SUCCESS;\r | |
969 | }\r | |
970 | return EFI_NOT_FOUND;\r | |
971 | }\r | |
972 | \r | |
973 | \r | |
974 | /**\r | |
975 | This function is the packet transmitting notify function registered to the IpIo\r | |
976 | interface. It's called to signal the udp TxToken when IpIo layer completes the\r | |
977 | transmitting of the udp datagram.\r | |
978 | \r | |
979 | @param[in] Status The completion status of the output udp datagram.\r | |
980 | @param[in] Context Pointer to the context data.\r | |
981 | @param[in] Sender Specify a EFI_IP6_PROTOCOL for sending.\r | |
982 | @param[in] NotifyData Pointer to the notify data.\r | |
983 | \r | |
984 | **/\r | |
985 | VOID\r | |
986 | EFIAPI\r | |
987 | Udp6DgramSent (\r | |
988 | IN EFI_STATUS Status,\r | |
989 | IN VOID *Context,\r | |
990 | IN IP_IO_IP_PROTOCOL Sender,\r | |
991 | IN VOID *NotifyData\r | |
992 | )\r | |
993 | {\r | |
994 | UDP6_INSTANCE_DATA *Instance;\r | |
995 | EFI_UDP6_COMPLETION_TOKEN *Token;\r | |
996 | \r | |
997 | Instance = (UDP6_INSTANCE_DATA *) Context;\r | |
998 | Token = (EFI_UDP6_COMPLETION_TOKEN *) NotifyData;\r | |
999 | \r | |
1000 | if (Udp6RemoveToken (&Instance->TxTokens, Token) == EFI_SUCCESS) {\r | |
1001 | //\r | |
1002 | // The token may be cancelled. Only signal it if the remove operation succeeds.\r | |
1003 | //\r | |
1004 | Token->Status = Status;\r | |
1005 | gBS->SignalEvent (Token->Event);\r | |
1006 | DispatchDpc ();\r | |
1007 | }\r | |
1008 | }\r | |
1009 | \r | |
1010 | \r | |
1011 | /**\r | |
1012 | This function processes the received datagram passed up by the IpIo layer.\r | |
1013 | \r | |
1014 | @param[in] Status The status of this udp datagram.\r | |
1015 | @param[in] IcmpError The IcmpError code, only available when Status is\r | |
1016 | EFI_ICMP_ERROR.\r | |
1017 | @param[in] NetSession Pointer to the EFI_NET_SESSION_DATA.\r | |
1018 | @param[in] Packet Pointer to the NET_BUF containing the received udp\r | |
1019 | datagram.\r | |
1020 | @param[in] Context Pointer to the context data.\r | |
1021 | \r | |
1022 | **/\r | |
1023 | VOID\r | |
1024 | EFIAPI\r | |
1025 | Udp6DgramRcvd (\r | |
1026 | IN EFI_STATUS Status,\r | |
1027 | IN UINT8 IcmpError,\r | |
1028 | IN EFI_NET_SESSION_DATA *NetSession,\r | |
1029 | IN NET_BUF *Packet,\r | |
1030 | IN VOID *Context\r | |
1031 | )\r | |
1032 | {\r | |
1033 | NET_CHECK_SIGNATURE (Packet, NET_BUF_SIGNATURE);\r | |
1034 | \r | |
1035 | //\r | |
1036 | // IpIo only passes received packets with Status EFI_SUCCESS or EFI_ICMP_ERROR.\r | |
1037 | //\r | |
1038 | if (Status == EFI_SUCCESS) {\r | |
1039 | \r | |
1040 | //\r | |
1041 | // Demultiplex the received datagram.\r | |
1042 | //\r | |
1043 | Udp6Demultiplex ((UDP6_SERVICE_DATA *) Context, NetSession, Packet);\r | |
1044 | } else {\r | |
1045 | //\r | |
1046 | // Handle the ICMP6 Error packet.\r | |
1047 | //\r | |
1048 | Udp6IcmpHandler ((UDP6_SERVICE_DATA *) Context, IcmpError, NetSession, Packet);\r | |
1049 | }\r | |
1050 | \r | |
1051 | //\r | |
1052 | // Dispatch the DPC queued by the NotifyFunction of the rx token's events\r | |
1053 | // that are signaled with received data.\r | |
1054 | //\r | |
1055 | DispatchDpc ();\r | |
1056 | }\r | |
1057 | \r | |
1058 | \r | |
1059 | /**\r | |
1060 | This function removes the multicast group specified by Arg from the Map.\r | |
1061 | \r | |
1062 | @param[in] Map Pointer to the NET_MAP.\r | |
1063 | @param[in] Item Pointer to the NET_MAP_ITEM.\r | |
1064 | @param[in] Arg Pointer to the Arg, it's the pointer to a\r | |
1065 | multicast IPv6 Address. This parameter is\r | |
1066 | optional and may be NULL.\r | |
1067 | \r | |
1068 | @retval EFI_SUCCESS The multicast address is removed.\r | |
1069 | @retval EFI_ABORTED The specified multicast address is removed, and the\r | |
1070 | Arg is not NULL.\r | |
1071 | \r | |
1072 | **/\r | |
1073 | EFI_STATUS\r | |
1074 | EFIAPI\r | |
1075 | Udp6LeaveGroup (\r | |
1076 | IN NET_MAP *Map,\r | |
1077 | IN NET_MAP_ITEM *Item,\r | |
1078 | IN VOID *Arg OPTIONAL\r | |
1079 | )\r | |
1080 | {\r | |
1081 | EFI_IPv6_ADDRESS *McastIp;\r | |
1082 | \r | |
1083 | McastIp = Arg;\r | |
1084 | \r | |
1085 | if ((McastIp != NULL) &&\r | |
1086 | !EFI_IP6_EQUAL (McastIp, ((EFI_IPv6_ADDRESS *)Item->Key))\r | |
1087 | ) {\r | |
1088 | //\r | |
1089 | // McastIp is not NULL and the multicast address contained in the Item\r | |
1090 | // is not the same as McastIp.\r | |
1091 | //\r | |
1092 | return EFI_SUCCESS;\r | |
1093 | }\r | |
1094 | \r | |
1095 | FreePool (Item->Key);\r | |
1096 | \r | |
1097 | //\r | |
1098 | // Remove this Item.\r | |
1099 | //\r | |
1100 | NetMapRemoveItem (Map, Item, NULL);\r | |
1101 | \r | |
1102 | if (McastIp != NULL) {\r | |
1103 | //\r | |
1104 | // Return EFI_ABORTED in case McastIp is not NULL to terminate the iteration.\r | |
1105 | //\r | |
1106 | return EFI_ABORTED;\r | |
1107 | }\r | |
1108 | \r | |
1109 | return EFI_SUCCESS;\r | |
1110 | }\r | |
1111 | \r | |
1112 | \r | |
1113 | /**\r | |
1114 | This function cancle the token specified by Arg in the Map.\r | |
1115 | \r | |
1116 | @param[in] Map Pointer to the NET_MAP.\r | |
1117 | @param[in] Item Pointer to the NET_MAP_ITEM.\r | |
1118 | @param[in] Arg Pointer to the token to be cancelled. If NULL, all\r | |
1119 | the tokens in this Map will be cancelled.\r | |
1120 | This parameter is optional and may be NULL.\r | |
1121 | \r | |
1122 | @retval EFI_SUCCESS The token is cancelled if Arg is NULL, or the token\r | |
1123 | is not the same as that in the Item, if Arg is not\r | |
1124 | NULL.\r | |
1125 | @retval EFI_ABORTED Arg is not NULL, and the token specified by Arg is\r | |
1126 | cancelled.\r | |
1127 | \r | |
1128 | **/\r | |
1129 | EFI_STATUS\r | |
1130 | EFIAPI\r | |
1131 | Udp6CancelTokens (\r | |
1132 | IN NET_MAP *Map,\r | |
1133 | IN NET_MAP_ITEM *Item,\r | |
1134 | IN VOID *Arg OPTIONAL\r | |
1135 | )\r | |
1136 | {\r | |
1137 | EFI_UDP6_COMPLETION_TOKEN *TokenToCancel;\r | |
1138 | NET_BUF *Packet;\r | |
1139 | IP_IO *IpIo;\r | |
1140 | \r | |
1141 | if ((Arg != NULL) && (Item->Key != Arg)) {\r | |
1142 | return EFI_SUCCESS;\r | |
1143 | }\r | |
1144 | \r | |
1145 | if (Item->Value != NULL) {\r | |
1146 | //\r | |
1147 | // If the token is a transmit token, the corresponding Packet is recorded in\r | |
1148 | // Item->Value, invoke IpIo to cancel this packet first. The IpIoCancelTxToken\r | |
1149 | // will invoke Udp6DgramSent, the token will be signaled and this Item will\r | |
1150 | // be removed from the Map there.\r | |
1151 | //\r | |
1152 | Packet = (NET_BUF *) (Item->Value);\r | |
1153 | IpIo = (IP_IO *) (*((UINTN *) &Packet->ProtoData[0]));\r | |
1154 | \r | |
1155 | IpIoCancelTxToken (IpIo, Packet);\r | |
1156 | } else {\r | |
1157 | //\r | |
1158 | // The token is a receive token. Abort it and remove it from the Map.\r | |
1159 | //\r | |
1160 | TokenToCancel = (EFI_UDP6_COMPLETION_TOKEN *) Item->Key;\r | |
1161 | NetMapRemoveItem (Map, Item, NULL);\r | |
1162 | \r | |
1163 | TokenToCancel->Status = EFI_ABORTED;\r | |
1164 | gBS->SignalEvent (TokenToCancel->Event);\r | |
1165 | }\r | |
1166 | \r | |
1167 | if (Arg != NULL) {\r | |
1168 | return EFI_ABORTED;\r | |
1169 | }\r | |
1170 | \r | |
1171 | return EFI_SUCCESS;\r | |
1172 | }\r | |
1173 | \r | |
1174 | \r | |
1175 | /**\r | |
1176 | This function removes all the Wrap datas in the RcvdDgramQue.\r | |
1177 | \r | |
1178 | @param[in] Instance Pointer to the Udp6 Instance.\r | |
1179 | \r | |
1180 | **/\r | |
1181 | VOID\r | |
1182 | Udp6FlushRcvdDgram (\r | |
1183 | IN UDP6_INSTANCE_DATA *Instance\r | |
1184 | )\r | |
1185 | {\r | |
1186 | UDP6_RXDATA_WRAP *Wrap;\r | |
1187 | \r | |
1188 | while (!IsListEmpty (&Instance->RcvdDgramQue)) {\r | |
1189 | //\r | |
1190 | // Iterate all the Wraps in the RcvdDgramQue.\r | |
1191 | //\r | |
1192 | Wrap = NET_LIST_HEAD (&Instance->RcvdDgramQue, UDP6_RXDATA_WRAP, Link);\r | |
1193 | \r | |
1194 | //\r | |
1195 | // The Wrap will be removed from the RcvdDgramQue by this function call.\r | |
1196 | //\r | |
1197 | Udp6RecycleRxDataWrap (NULL, (VOID *) Wrap);\r | |
1198 | }\r | |
1199 | }\r | |
1200 | \r | |
1201 | \r | |
1202 | \r | |
1203 | /**\r | |
1204 | Cancel Udp6 tokens from the Udp6 instance.\r | |
1205 | \r | |
1206 | @param[in] Instance Pointer to the udp instance context data.\r | |
1207 | @param[in] Token Pointer to the token to be canceled. If NULL, all\r | |
1208 | tokens in this instance will be cancelled.\r | |
1209 | This parameter is optional and may be NULL.\r | |
1210 | \r | |
1211 | @retval EFI_SUCCESS The Token is cancelled.\r | |
1212 | @retval EFI_NOT_FOUND The Token is not found.\r | |
1213 | \r | |
1214 | **/\r | |
1215 | EFI_STATUS\r | |
1216 | Udp6InstanceCancelToken (\r | |
1217 | IN UDP6_INSTANCE_DATA *Instance,\r | |
1218 | IN EFI_UDP6_COMPLETION_TOKEN *Token OPTIONAL\r | |
1219 | )\r | |
1220 | {\r | |
1221 | EFI_STATUS Status;\r | |
1222 | \r | |
1223 | //\r | |
1224 | // Cancel this token from the TxTokens map.\r | |
1225 | //\r | |
1226 | Status = NetMapIterate (&Instance->TxTokens, Udp6CancelTokens, Token);\r | |
1227 | \r | |
1228 | if ((Token != NULL) && (Status == EFI_ABORTED)) {\r | |
1229 | //\r | |
1230 | // If Token isn't NULL and Status is EFI_ABORTED, the token is cancelled from\r | |
1231 | // the TxTokens and returns success.\r | |
1232 | //\r | |
1233 | return EFI_SUCCESS;\r | |
1234 | }\r | |
1235 | \r | |
1236 | //\r | |
1237 | // Try to cancel this token from the RxTokens map in condition either the Token\r | |
1238 | // is NULL or the specified Token is not in TxTokens.\r | |
1239 | //\r | |
1240 | Status = NetMapIterate (&Instance->RxTokens, Udp6CancelTokens, Token);\r | |
1241 | \r | |
1242 | if ((Token != NULL) && (Status == EFI_SUCCESS)) {\r | |
1243 | //\r | |
1244 | // If Token isn't NULL and Status is EFI_SUCCESS, the token is neither in the\r | |
1245 | // TxTokens nor the RxTokens, or say, it's not found.\r | |
1246 | //\r | |
1247 | return EFI_NOT_FOUND;\r | |
1248 | }\r | |
1249 | \r | |
1250 | ASSERT ((Token != NULL) ||\r | |
1251 | ((0 == NetMapGetCount (&Instance->TxTokens)) &&\r | |
1252 | (0 == NetMapGetCount (&Instance->RxTokens)))\r | |
1253 | );\r | |
1254 | \r | |
1255 | return EFI_SUCCESS;\r | |
1256 | }\r | |
1257 | \r | |
1258 | \r | |
1259 | /**\r | |
1260 | This function checks if the received udp datagram matches with the Instance.\r | |
1261 | \r | |
1262 | @param[in] Instance Pointer to the udp instance context data.\r | |
1263 | @param[in] Udp6Session Pointer to the EFI_UDP6_SESSION_DATA abstracted\r | |
1264 | from the received udp datagram.\r | |
1265 | \r | |
1266 | @retval TRUE The udp datagram matches the receiving requirements of the Instance.\r | |
1267 | @retval FALSE The udp datagram does not matche the receiving requirements of the Instance.\r | |
1268 | \r | |
1269 | **/\r | |
1270 | BOOLEAN\r | |
1271 | Udp6MatchDgram (\r | |
1272 | IN UDP6_INSTANCE_DATA *Instance,\r | |
1273 | IN EFI_UDP6_SESSION_DATA *Udp6Session\r | |
1274 | )\r | |
1275 | {\r | |
1276 | EFI_UDP6_CONFIG_DATA *ConfigData;\r | |
1277 | EFI_IPv6_ADDRESS Destination;\r | |
1278 | \r | |
1279 | ConfigData = &Instance->ConfigData;\r | |
1280 | \r | |
1281 | if (ConfigData->AcceptPromiscuous) {\r | |
1282 | //\r | |
1283 | // Always matches if this instance is in the promiscuous state.\r | |
1284 | //\r | |
1285 | return TRUE;\r | |
1286 | }\r | |
1287 | \r | |
1288 | if ((!ConfigData->AcceptAnyPort && (Udp6Session->DestinationPort != ConfigData->StationPort)) ||\r | |
1289 | ((ConfigData->RemotePort != 0) && (Udp6Session->SourcePort != ConfigData->RemotePort))\r | |
1290 | ) {\r | |
1291 | //\r | |
1292 | // The local port or the remote port doesn't match.\r | |
1293 | //\r | |
1294 | return FALSE;\r | |
1295 | }\r | |
1296 | \r | |
1297 | if (!NetIp6IsUnspecifiedAddr (&ConfigData->RemoteAddress) &&\r | |
1298 | !EFI_IP6_EQUAL (&ConfigData->RemoteAddress, &Udp6Session->SourceAddress)\r | |
1299 | ) {\r | |
1300 | //\r | |
1301 | // This datagram doesn't come from the instance's specified sender.\r | |
1302 | //\r | |
1303 | return FALSE;\r | |
1304 | }\r | |
1305 | \r | |
1306 | if (NetIp6IsUnspecifiedAddr (&ConfigData->StationAddress) ||\r | |
1307 | EFI_IP6_EQUAL (&Udp6Session->DestinationAddress, &ConfigData->StationAddress)\r | |
1308 | ) {\r | |
1309 | //\r | |
1310 | // The instance is configured to receive datagrams destinated to any station IP or\r | |
1311 | // the destination address of this datagram matches the configured station IP.\r | |
1312 | //\r | |
1313 | return TRUE;\r | |
1314 | }\r | |
1315 | \r | |
1316 | IP6_COPY_ADDRESS (&Destination, &Udp6Session->DestinationAddress);\r | |
1317 | \r | |
1318 | if (IP6_IS_MULTICAST (&Destination) &&\r | |
1319 | (NULL != Udp6MapMultiCastAddr (&Instance->McastIps, &Destination))\r | |
1320 | ) {\r | |
1321 | //\r | |
1322 | // It's a multicast packet and the multicast address is accepted by this instance.\r | |
1323 | //\r | |
1324 | return TRUE;\r | |
1325 | }\r | |
1326 | \r | |
1327 | return FALSE;\r | |
1328 | }\r | |
1329 | \r | |
1330 | \r | |
1331 | /**\r | |
1332 | This function removes the Wrap specified by Context and release relevant resources.\r | |
1333 | \r | |
1334 | @param[in] Event The Event this notify function registered to.\r | |
1335 | @param[in] Context Pointer to the context data.\r | |
1336 | \r | |
1337 | **/\r | |
1338 | VOID\r | |
1339 | EFIAPI\r | |
1340 | Udp6RecycleRxDataWrap (\r | |
1341 | IN EFI_EVENT Event,\r | |
1342 | IN VOID *Context\r | |
1343 | )\r | |
1344 | {\r | |
1345 | UDP6_RXDATA_WRAP *Wrap;\r | |
1346 | \r | |
1347 | Wrap = (UDP6_RXDATA_WRAP *) Context;\r | |
1348 | \r | |
1349 | //\r | |
1350 | // Remove the Wrap from the list it belongs to.\r | |
1351 | //\r | |
1352 | RemoveEntryList (&Wrap->Link);\r | |
1353 | \r | |
1354 | //\r | |
1355 | // Free the Packet associated with this Wrap.\r | |
1356 | //\r | |
1357 | NetbufFree (Wrap->Packet);\r | |
1358 | \r | |
1359 | //\r | |
1360 | // Close the event.\r | |
1361 | //\r | |
1362 | gBS->CloseEvent (Wrap->RxData.RecycleSignal);\r | |
1363 | \r | |
1364 | FreePool (Wrap);\r | |
1365 | }\r | |
1366 | \r | |
1367 | \r | |
1368 | /**\r | |
1369 | This function wraps the Packet into RxData.\r | |
1370 | \r | |
1371 | @param[in] Instance Pointer to the instance context data.\r | |
1372 | @param[in] Packet Pointer to the buffer containing the received\r | |
1373 | datagram.\r | |
1374 | @param[in] RxData Pointer to the EFI_UDP6_RECEIVE_DATA of this\r | |
1375 | datagram.\r | |
1376 | \r | |
1377 | @return Pointer to the structure wrapping the RxData and the Packet.\r | |
1378 | \r | |
1379 | **/\r | |
1380 | UDP6_RXDATA_WRAP *\r | |
1381 | Udp6WrapRxData (\r | |
1382 | IN UDP6_INSTANCE_DATA *Instance,\r | |
1383 | IN NET_BUF *Packet,\r | |
1384 | IN EFI_UDP6_RECEIVE_DATA *RxData\r | |
1385 | )\r | |
1386 | {\r | |
1387 | EFI_STATUS Status;\r | |
1388 | UDP6_RXDATA_WRAP *Wrap;\r | |
1389 | \r | |
1390 | //\r | |
1391 | // Allocate buffer for the Wrap.\r | |
1392 | //\r | |
1393 | Wrap = AllocateZeroPool (sizeof (UDP6_RXDATA_WRAP) +\r | |
1394 | (Packet->BlockOpNum - 1) * sizeof (EFI_UDP6_FRAGMENT_DATA));\r | |
1395 | if (Wrap == NULL) {\r | |
1396 | return NULL;\r | |
1397 | }\r | |
1398 | \r | |
1399 | InitializeListHead (&Wrap->Link);\r | |
1400 | \r | |
1401 | CopyMem (&Wrap->RxData, RxData, sizeof(EFI_UDP6_RECEIVE_DATA));\r | |
1402 | //\r | |
1403 | // Create the Recycle event.\r | |
1404 | //\r | |
1405 | Status = gBS->CreateEvent (\r | |
1406 | EVT_NOTIFY_SIGNAL,\r | |
1407 | TPL_NOTIFY,\r | |
1408 | Udp6RecycleRxDataWrap,\r | |
1409 | Wrap,\r | |
1410 | &Wrap->RxData.RecycleSignal\r | |
1411 | );\r | |
1412 | if (EFI_ERROR (Status)) {\r | |
1413 | FreePool (Wrap);\r | |
1414 | return NULL;\r | |
1415 | }\r | |
1416 | \r | |
1417 | Wrap->Packet = Packet;\r | |
1418 | Wrap->TimeoutTick = Instance->ConfigData.ReceiveTimeout;\r | |
1419 | \r | |
1420 | return Wrap;\r | |
1421 | }\r | |
1422 | \r | |
1423 | \r | |
1424 | /**\r | |
1425 | This function enqueues the received datagram into the instances' receiving queues.\r | |
1426 | \r | |
1427 | @param[in] Udp6Service Pointer to the udp service context data.\r | |
1428 | @param[in] Packet Pointer to the buffer containing the received\r | |
1429 | datagram.\r | |
1430 | @param[in] RxData Pointer to the EFI_UDP6_RECEIVE_DATA of this\r | |
1431 | datagram.\r | |
1432 | \r | |
1433 | @return The times this datagram is enqueued.\r | |
1434 | \r | |
1435 | **/\r | |
1436 | UINTN\r | |
1437 | Udp6EnqueueDgram (\r | |
1438 | IN UDP6_SERVICE_DATA *Udp6Service,\r | |
1439 | IN NET_BUF *Packet,\r | |
1440 | IN EFI_UDP6_RECEIVE_DATA *RxData\r | |
1441 | )\r | |
1442 | {\r | |
1443 | LIST_ENTRY *Entry;\r | |
1444 | UDP6_INSTANCE_DATA *Instance;\r | |
1445 | UDP6_RXDATA_WRAP *Wrap;\r | |
1446 | UINTN Enqueued;\r | |
1447 | \r | |
1448 | Enqueued = 0;\r | |
1449 | \r | |
1450 | NET_LIST_FOR_EACH (Entry, &Udp6Service->ChildrenList) {\r | |
1451 | //\r | |
1452 | // Iterate the instances.\r | |
1453 | //\r | |
1454 | Instance = NET_LIST_USER_STRUCT (Entry, UDP6_INSTANCE_DATA, Link);\r | |
1455 | \r | |
1456 | if (!Instance->Configured) {\r | |
1457 | continue;\r | |
1458 | }\r | |
1459 | \r | |
1460 | if (Udp6MatchDgram (Instance, &RxData->UdpSession)) {\r | |
1461 | //\r | |
1462 | // Wrap the RxData and put this Wrap into the instances RcvdDgramQue.\r | |
1463 | //\r | |
1464 | Wrap = Udp6WrapRxData (Instance, Packet, RxData);\r | |
1465 | if (Wrap == NULL) {\r | |
1466 | continue;\r | |
1467 | }\r | |
1468 | \r | |
1469 | NET_GET_REF (Packet);\r | |
1470 | \r | |
1471 | InsertTailList (&Instance->RcvdDgramQue, &Wrap->Link);\r | |
1472 | \r | |
1473 | Enqueued++;\r | |
1474 | }\r | |
1475 | }\r | |
1476 | \r | |
1477 | return Enqueued;\r | |
1478 | }\r | |
1479 | \r | |
1480 | \r | |
1481 | /**\r | |
1482 | This function delivers the received datagrams to the specified instance.\r | |
1483 | \r | |
1484 | @param[in] Instance Pointer to the instance context data.\r | |
1485 | \r | |
1486 | **/\r | |
1487 | VOID\r | |
1488 | Udp6InstanceDeliverDgram (\r | |
1489 | IN UDP6_INSTANCE_DATA *Instance\r | |
1490 | )\r | |
1491 | {\r | |
1492 | UDP6_RXDATA_WRAP *Wrap;\r | |
1493 | EFI_UDP6_COMPLETION_TOKEN *Token;\r | |
1494 | NET_BUF *Dup;\r | |
1495 | EFI_UDP6_RECEIVE_DATA *RxData;\r | |
1496 | EFI_TPL OldTpl;\r | |
1497 | \r | |
1498 | if (!IsListEmpty (&Instance->RcvdDgramQue) &&\r | |
1499 | !NetMapIsEmpty (&Instance->RxTokens)\r | |
1500 | ) {\r | |
1501 | \r | |
1502 | Wrap = NET_LIST_HEAD (&Instance->RcvdDgramQue, UDP6_RXDATA_WRAP, Link);\r | |
1503 | \r | |
1504 | if (NET_BUF_SHARED (Wrap->Packet)) {\r | |
1505 | //\r | |
1506 | // Duplicate the Packet if it is shared between instances.\r | |
1507 | //\r | |
1508 | Dup = NetbufDuplicate (Wrap->Packet, NULL, 0);\r | |
1509 | if (Dup == NULL) {\r | |
1510 | return;\r | |
1511 | }\r | |
1512 | \r | |
1513 | NetbufFree (Wrap->Packet);\r | |
1514 | \r | |
1515 | Wrap->Packet = Dup;\r | |
1516 | }\r | |
1517 | \r | |
1518 | NetListRemoveHead (&Instance->RcvdDgramQue);\r | |
1519 | \r | |
1520 | Token = (EFI_UDP6_COMPLETION_TOKEN *) NetMapRemoveHead (&Instance->RxTokens, NULL);\r | |
1521 | \r | |
1522 | //\r | |
1523 | // Build the FragmentTable and set the FragmentCount in RxData.\r | |
1524 | //\r | |
1525 | RxData = &Wrap->RxData;\r | |
1526 | RxData->FragmentCount = Wrap->Packet->BlockOpNum;\r | |
1527 | \r | |
1528 | NetbufBuildExt (\r | |
1529 | Wrap->Packet,\r | |
1530 | (NET_FRAGMENT *) RxData->FragmentTable,\r | |
1531 | &RxData->FragmentCount\r | |
1532 | );\r | |
1533 | \r | |
1534 | Token->Status = EFI_SUCCESS;\r | |
1535 | Token->Packet.RxData = &Wrap->RxData;\r | |
1536 | \r | |
1537 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
1538 | InsertTailList (&Instance->DeliveredDgramQue, &Wrap->Link);\r | |
1539 | gBS->RestoreTPL (OldTpl);\r | |
1540 | \r | |
1541 | gBS->SignalEvent (Token->Event);\r | |
1542 | }\r | |
1543 | }\r | |
1544 | \r | |
1545 | \r | |
1546 | /**\r | |
1547 | This function delivers the datagrams enqueued in the instances.\r | |
1548 | \r | |
1549 | @param[in] Udp6Service Pointer to the udp service context data.\r | |
1550 | \r | |
1551 | **/\r | |
1552 | VOID\r | |
1553 | Udp6DeliverDgram (\r | |
1554 | IN UDP6_SERVICE_DATA *Udp6Service\r | |
1555 | )\r | |
1556 | {\r | |
1557 | LIST_ENTRY *Entry;\r | |
1558 | UDP6_INSTANCE_DATA *Instance;\r | |
1559 | \r | |
1560 | NET_LIST_FOR_EACH (Entry, &Udp6Service->ChildrenList) {\r | |
1561 | //\r | |
1562 | // Iterate the instances.\r | |
1563 | //\r | |
1564 | Instance = NET_LIST_USER_STRUCT (Entry, UDP6_INSTANCE_DATA, Link);\r | |
1565 | \r | |
1566 | if (!Instance->Configured) {\r | |
1567 | continue;\r | |
1568 | }\r | |
1569 | \r | |
1570 | //\r | |
1571 | // Deliver the datagrams of this instance.\r | |
1572 | //\r | |
1573 | Udp6InstanceDeliverDgram (Instance);\r | |
1574 | }\r | |
1575 | }\r | |
1576 | \r | |
1577 | \r | |
1578 | /**\r | |
1579 | This function demultiplexes the received udp datagram to the appropriate instances.\r | |
1580 | \r | |
1581 | @param[in] Udp6Service Pointer to the udp service context data.\r | |
1582 | @param[in] NetSession Pointer to the EFI_NET_SESSION_DATA abstrated from\r | |
1583 | the received datagram.\r | |
1584 | @param[in] Packet Pointer to the buffer containing the received udp\r | |
1585 | datagram.\r | |
1586 | \r | |
1587 | **/\r | |
1588 | VOID\r | |
1589 | Udp6Demultiplex (\r | |
1590 | IN UDP6_SERVICE_DATA *Udp6Service,\r | |
1591 | IN EFI_NET_SESSION_DATA *NetSession,\r | |
1592 | IN NET_BUF *Packet\r | |
1593 | )\r | |
1594 | {\r | |
1595 | EFI_UDP_HEADER *Udp6Header;\r | |
1596 | UINT16 HeadSum;\r | |
1597 | EFI_UDP6_RECEIVE_DATA RxData;\r | |
1598 | EFI_UDP6_SESSION_DATA *Udp6Session;\r | |
1599 | UINTN Enqueued;\r | |
1600 | \r | |
1601 | //\r | |
1602 | // Get the datagram header from the packet buffer.\r | |
1603 | //\r | |
1604 | Udp6Header = (EFI_UDP_HEADER *) NetbufGetByte (Packet, 0, NULL);\r | |
1605 | ASSERT (Udp6Header != NULL);\r | |
1606 | \r | |
1607 | if (Udp6Header->Checksum != 0) {\r | |
1608 | //\r | |
1609 | // check the checksum.\r | |
1610 | //\r | |
1611 | HeadSum = NetIp6PseudoHeadChecksum (\r | |
1612 | &NetSession->Source.v6,\r | |
1613 | &NetSession->Dest.v6,\r | |
1614 | EFI_IP_PROTO_UDP,\r | |
1615 | 0\r | |
1616 | );\r | |
1617 | \r | |
1618 | if (Udp6Checksum (Packet, HeadSum) != 0) {\r | |
1619 | //\r | |
1620 | // Wrong checksum.\r | |
1621 | //\r | |
1622 | return;\r | |
1623 | }\r | |
1624 | }\r | |
1625 | \r | |
1626 | gRT->GetTime (&RxData.TimeStamp, NULL);\r | |
1627 | \r | |
1628 | Udp6Session = &RxData.UdpSession;\r | |
1629 | Udp6Session->SourcePort = NTOHS (Udp6Header->SrcPort);\r | |
1630 | Udp6Session->DestinationPort = NTOHS (Udp6Header->DstPort);\r | |
1631 | \r | |
1632 | IP6_COPY_ADDRESS (&Udp6Session->SourceAddress, &NetSession->Source);\r | |
1633 | IP6_COPY_ADDRESS (&Udp6Session->DestinationAddress, &NetSession->Dest);\r | |
1634 | \r | |
1635 | //\r | |
1636 | // Trim the UDP header.\r | |
1637 | //\r | |
1638 | NetbufTrim (Packet, UDP6_HEADER_SIZE, TRUE);\r | |
1639 | \r | |
1640 | RxData.DataLength = (UINT32) Packet->TotalSize;\r | |
1641 | \r | |
1642 | //\r | |
1643 | // Try to enqueue this datagram into the instances.\r | |
1644 | //\r | |
1645 | Enqueued = Udp6EnqueueDgram (Udp6Service, Packet, &RxData);\r | |
1646 | \r | |
1647 | if (Enqueued == 0) {\r | |
1648 | //\r | |
1649 | // Send the port unreachable ICMP packet before we free this NET_BUF\r | |
1650 | //\r | |
1651 | Udp6SendPortUnreach (Udp6Service->IpIo, NetSession, Udp6Header);\r | |
1652 | }\r | |
1653 | \r | |
1654 | //\r | |
1655 | // Try to free the packet before deliver it.\r | |
1656 | //\r | |
1657 | NetbufFree (Packet);\r | |
1658 | \r | |
1659 | if (Enqueued > 0) {\r | |
1660 | //\r | |
1661 | // Deliver the datagram.\r | |
1662 | //\r | |
1663 | Udp6DeliverDgram (Udp6Service);\r | |
1664 | }\r | |
1665 | }\r | |
1666 | \r | |
1667 | \r | |
1668 | /**\r | |
1669 | This function builds and sends out a icmp port unreachable message.\r | |
1670 | \r | |
1671 | @param[in] IpIo Pointer to the IP_IO instance.\r | |
1672 | @param[in] NetSession Pointer to the EFI_NET_SESSION_DATA of the packet\r | |
1673 | causes this icmp error message.\r | |
1674 | @param[in] Udp6Header Pointer to the udp header of the datagram causes\r | |
1675 | this icmp error message.\r | |
1676 | \r | |
1677 | **/\r | |
1678 | VOID\r | |
1679 | Udp6SendPortUnreach (\r | |
1680 | IN IP_IO *IpIo,\r | |
1681 | IN EFI_NET_SESSION_DATA *NetSession,\r | |
1682 | IN VOID *Udp6Header\r | |
1683 | )\r | |
1684 | {\r | |
1685 | NET_BUF *Packet;\r | |
1686 | UINT32 Len;\r | |
1687 | IP6_ICMP_ERROR_HEAD *IcmpErrHdr;\r | |
1688 | UINT8 *Ptr;\r | |
1689 | IP_IO_OVERRIDE Override;\r | |
1690 | IP_IO_IP_INFO *IpSender;\r | |
1691 | EFI_IP6_MODE_DATA *Ip6ModeData;\r | |
1692 | EFI_STATUS Status;\r | |
1693 | EFI_IP6_PROTOCOL *Ip6Protocol;\r | |
1694 | \r | |
1695 | Ip6ModeData = NULL;\r | |
1696 | \r | |
1697 | //\r | |
1698 | // An ICMPv6 error message MUST NOT be originated as A packet destined to\r | |
1699 | // 1) an IPv6 multicast address 2) The IPv6 Unspecified Address\r | |
1700 | //\r | |
1701 | if (NetSession->IpVersion == IP_VERSION_6) {\r | |
1702 | if (NetIp6IsUnspecifiedAddr (&NetSession->Dest.v6) ||\r | |
1703 | IP6_IS_MULTICAST (&NetSession->Dest.v6)\r | |
1704 | ) {\r | |
1705 | goto EXIT;\r | |
1706 | }\r | |
1707 | }\r | |
1708 | \r | |
1709 | \r | |
1710 | IpSender = IpIoFindSender (&IpIo, NetSession->IpVersion, &NetSession->Dest);\r | |
1711 | \r | |
1712 | //\r | |
1713 | // Get the Ipv6 Mode Data.\r | |
1714 | //\r | |
1715 | Ip6ModeData = AllocateZeroPool (sizeof (EFI_IP6_MODE_DATA));\r | |
1716 | ASSERT (Ip6ModeData != NULL);\r | |
1717 | \r | |
1718 | //\r | |
1719 | // If not finding the related IpSender use the default IpIo to send out\r | |
1720 | // the port unreachable ICMP message.\r | |
1721 | //\r | |
1722 | if (IpSender == NULL) {\r | |
1723 | Ip6Protocol = IpIo->Ip.Ip6;\r | |
1724 | } else {\r | |
1725 | Ip6Protocol = IpSender->Ip.Ip6;\r | |
1726 | }\r | |
1727 | \r | |
1728 | Status = Ip6Protocol->GetModeData (\r | |
1729 | Ip6Protocol,\r | |
1730 | Ip6ModeData,\r | |
1731 | NULL,\r | |
1732 | NULL\r | |
1733 | );\r | |
1734 | \r | |
1735 | if (EFI_ERROR (Status)) {\r | |
1736 | goto EXIT;\r | |
1737 | }\r | |
1738 | //\r | |
1739 | // The ICMP6 packet length, includes whole invoking packet and ICMP6 error header.\r | |
1740 | //\r | |
1741 | Len = NetSession->IpHdrLen +\r | |
1742 | NTOHS(((EFI_UDP_HEADER *) Udp6Header)->Length) +\r | |
1743 | sizeof (IP6_ICMP_ERROR_HEAD);\r | |
1744 | \r | |
1745 | //\r | |
1746 | // If the ICMP6 packet length larger than IP MTU, adjust its length to MTU.\r | |
1747 | //\r | |
1748 | if (Ip6ModeData->MaxPacketSize < Len) {\r | |
1749 | Len = Ip6ModeData->MaxPacketSize;\r | |
1750 | }\r | |
1751 | \r | |
1752 | //\r | |
1753 | // Allocate buffer for the icmp error message.\r | |
1754 | //\r | |
1755 | Packet = NetbufAlloc (Len);\r | |
1756 | if (Packet == NULL) {\r | |
1757 | goto EXIT;\r | |
1758 | }\r | |
1759 | \r | |
1760 | //\r | |
1761 | // Allocate space for the IP6_ICMP_ERROR_HEAD.\r | |
1762 | //\r | |
1763 | IcmpErrHdr = (IP6_ICMP_ERROR_HEAD *) NetbufAllocSpace (Packet, Len, FALSE);\r | |
1764 | ASSERT (IcmpErrHdr != NULL);\r | |
1765 | \r | |
1766 | //\r | |
1767 | // Set the required fields for the icmp port unreachable message.\r | |
1768 | //\r | |
1769 | IcmpErrHdr->Head.Type = ICMP_V6_DEST_UNREACHABLE;\r | |
1770 | IcmpErrHdr->Head.Code = ICMP_V6_PORT_UNREACHABLE;\r | |
1771 | IcmpErrHdr->Head.Checksum = 0;\r | |
1772 | IcmpErrHdr->Fourth = 0;\r | |
1773 | \r | |
1774 | //\r | |
1775 | // Copy as much of invoking Packet as possible without the ICMPv6 packet\r | |
1776 | // exceeding the minimum Ipv6 MTU. The length of IP6_ICMP_ERROR_HEAD contains\r | |
1777 | // the length of EFI_IP6_HEADER, so when using the length of IP6_ICMP_ERROR_HEAD\r | |
1778 | // for pointer movement that fact should be considered.\r | |
1779 | //\r | |
1780 | Ptr = (VOID *) &IcmpErrHdr->Head;\r | |
1781 | Ptr = (UINT8 *) (UINTN) ((UINTN) Ptr + sizeof (IP6_ICMP_ERROR_HEAD) - sizeof (EFI_IP6_HEADER));\r | |
1782 | CopyMem (Ptr, NetSession->IpHdr.Ip6Hdr, NetSession->IpHdrLen);\r | |
1783 | CopyMem (\r | |
1784 | Ptr + NetSession->IpHdrLen,\r | |
1785 | Udp6Header,\r | |
1786 | Len - NetSession->IpHdrLen - sizeof (IP6_ICMP_ERROR_HEAD) + sizeof (EFI_IP6_HEADER)\r | |
1787 | );\r | |
1788 | \r | |
1789 | //\r | |
1790 | // Set the checksum as zero, and IP6 driver will calcuate it with pseudo header.\r | |
1791 | //\r | |
1792 | IcmpErrHdr->Head.Checksum = 0;\r | |
1793 | \r | |
1794 | //\r | |
1795 | // Fill the override data.\r | |
1796 | //\r | |
1797 | Override.Ip6OverrideData.FlowLabel = 0;\r | |
1798 | Override.Ip6OverrideData.HopLimit = 255;\r | |
1799 | Override.Ip6OverrideData.Protocol = IP6_ICMP;\r | |
1800 | \r | |
1801 | //\r | |
1802 | // Send out this icmp packet.\r | |
1803 | //\r | |
1804 | IpIoSend (IpIo, Packet, IpSender, NULL, NULL, &NetSession->Source, &Override);\r | |
1805 | \r | |
1806 | NetbufFree (Packet);\r | |
1807 | \r | |
1808 | EXIT:\r | |
1809 | if (Ip6ModeData != NULL) {\r | |
1810 | FreePool (Ip6ModeData);\r | |
1811 | }\r | |
1812 | }\r | |
1813 | \r | |
1814 | \r | |
1815 | /**\r | |
1816 | This function handles the received Icmp Error message and de-multiplexes it to the\r | |
1817 | instance.\r | |
1818 | \r | |
1819 | @param[in] Udp6Service Pointer to the udp service context data.\r | |
1820 | @param[in] IcmpError The icmp error code.\r | |
1821 | @param[in] NetSession Pointer to the EFI_NET_SESSION_DATA abstracted\r | |
1822 | from the received Icmp Error packet.\r | |
1823 | @param[in, out] Packet Pointer to the Icmp Error packet.\r | |
1824 | \r | |
1825 | **/\r | |
1826 | VOID\r | |
1827 | Udp6IcmpHandler (\r | |
1828 | IN UDP6_SERVICE_DATA *Udp6Service,\r | |
1829 | IN UINT8 IcmpError,\r | |
1830 | IN EFI_NET_SESSION_DATA *NetSession,\r | |
1831 | IN OUT NET_BUF *Packet\r | |
1832 | )\r | |
1833 | {\r | |
1834 | EFI_UDP_HEADER *Udp6Header;\r | |
1835 | EFI_UDP6_SESSION_DATA Udp6Session;\r | |
1836 | LIST_ENTRY *Entry;\r | |
1837 | UDP6_INSTANCE_DATA *Instance;\r | |
1838 | \r | |
1839 | Udp6Header = (EFI_UDP_HEADER *) NetbufGetByte (Packet, 0, NULL);\r | |
1840 | ASSERT (Udp6Header != NULL);\r | |
1841 | \r | |
1842 | IP6_COPY_ADDRESS (&Udp6Session.SourceAddress, &NetSession->Source);\r | |
1843 | IP6_COPY_ADDRESS (&Udp6Session.DestinationAddress, &NetSession->Dest);\r | |
1844 | \r | |
1845 | Udp6Session.SourcePort = NTOHS (Udp6Header->DstPort);\r | |
1846 | Udp6Session.DestinationPort = NTOHS (Udp6Header->SrcPort);\r | |
1847 | \r | |
1848 | NET_LIST_FOR_EACH (Entry, &Udp6Service->ChildrenList) {\r | |
1849 | //\r | |
1850 | // Iterate all the instances.\r | |
1851 | //\r | |
1852 | Instance = NET_LIST_USER_STRUCT (Entry, UDP6_INSTANCE_DATA, Link);\r | |
1853 | \r | |
1854 | if (!Instance->Configured) {\r | |
1855 | continue;\r | |
1856 | }\r | |
1857 | \r | |
1858 | if (Udp6MatchDgram (Instance, &Udp6Session)) {\r | |
1859 | //\r | |
1860 | // Translate the Icmp Error code according to the udp spec.\r | |
1861 | //\r | |
1862 | Instance->IcmpError = IpIoGetIcmpErrStatus (IcmpError, IP_VERSION_6, NULL, NULL);\r | |
1863 | \r | |
1864 | if (IcmpError > ICMP_ERR_UNREACH_PORT) {\r | |
1865 | Instance->IcmpError = EFI_ICMP_ERROR;\r | |
1866 | }\r | |
1867 | \r | |
1868 | //\r | |
1869 | // Notify the instance with the received Icmp Error.\r | |
1870 | //\r | |
1871 | Udp6ReportIcmpError (Instance);\r | |
1872 | \r | |
1873 | break;\r | |
1874 | }\r | |
1875 | }\r | |
1876 | \r | |
1877 | NetbufFree (Packet);\r | |
1878 | }\r | |
1879 | \r | |
1880 | \r | |
1881 | /**\r | |
1882 | This function reports the received ICMP error.\r | |
1883 | \r | |
1884 | @param[in] Instance Pointer to the udp instance context data.\r | |
1885 | \r | |
1886 | **/\r | |
1887 | VOID\r | |
1888 | Udp6ReportIcmpError (\r | |
1889 | IN UDP6_INSTANCE_DATA *Instance\r | |
1890 | )\r | |
1891 | {\r | |
1892 | EFI_UDP6_COMPLETION_TOKEN *Token;\r | |
1893 | \r | |
1894 | if (NetMapIsEmpty (&Instance->RxTokens)) {\r | |
1895 | //\r | |
1896 | // There are no receive tokens to deliver the ICMP error.\r | |
1897 | //\r | |
1898 | return;\r | |
1899 | }\r | |
1900 | \r | |
1901 | if (EFI_ERROR (Instance->IcmpError)) {\r | |
1902 | //\r | |
1903 | // Try to get a RxToken from the RxTokens map.\r | |
1904 | //\r | |
1905 | Token = (EFI_UDP6_COMPLETION_TOKEN *) NetMapRemoveHead (&Instance->RxTokens, NULL);\r | |
1906 | \r | |
1907 | if (Token != NULL) {\r | |
1908 | //\r | |
1909 | // Report the error through the Token.\r | |
1910 | //\r | |
1911 | Token->Status = Instance->IcmpError;\r | |
1912 | gBS->SignalEvent (Token->Event);\r | |
1913 | \r | |
1914 | //\r | |
1915 | // Clear the IcmpError.\r | |
1916 | //\r | |
1917 | Instance->IcmpError = EFI_SUCCESS;\r | |
1918 | }\r | |
1919 | }\r | |
1920 | }\r | |
1921 | \r | |
1922 | \r | |
1923 | /**\r | |
1924 | This function is a dummy ext-free function for the NET_BUF created for the output\r | |
1925 | udp datagram.\r | |
1926 | \r | |
1927 | @param[in] Context Pointer to the context data.\r | |
1928 | \r | |
1929 | **/\r | |
1930 | VOID\r | |
1931 | EFIAPI\r | |
1932 | Udp6NetVectorExtFree (\r | |
1933 | IN VOID *Context\r | |
1934 | )\r | |
1935 | {\r | |
1936 | }\r | |
1937 | \r | |
1938 | \r | |
1939 | /**\r | |
1940 | Set the Udp6 variable data.\r | |
1941 | \r | |
1942 | @param[in] Udp6Service Udp6 service data.\r | |
1943 | \r | |
1944 | @retval EFI_OUT_OF_RESOURCES There are not enough resources to set the\r | |
1945 | variable.\r | |
1946 | @retval other Set variable failed.\r | |
1947 | \r | |
1948 | **/\r | |
1949 | EFI_STATUS\r | |
1950 | Udp6SetVariableData (\r | |
1951 | IN UDP6_SERVICE_DATA *Udp6Service\r | |
1952 | )\r | |
1953 | {\r | |
1954 | UINT32 NumConfiguredInstance;\r | |
1955 | LIST_ENTRY *Entry;\r | |
1956 | UINTN VariableDataSize;\r | |
1957 | EFI_UDP6_VARIABLE_DATA *Udp6VariableData;\r | |
1958 | EFI_UDP6_SERVICE_POINT *Udp6ServicePoint;\r | |
1959 | UDP6_INSTANCE_DATA *Udp6Instance;\r | |
1960 | CHAR16 *NewMacString;\r | |
1961 | EFI_STATUS Status;\r | |
1962 | \r | |
1963 | NumConfiguredInstance = 0;\r | |
1964 | \r | |
1965 | //\r | |
1966 | // Go through the children list to count the configured children.\r | |
1967 | //\r | |
1968 | NET_LIST_FOR_EACH (Entry, &Udp6Service->ChildrenList) {\r | |
1969 | Udp6Instance = NET_LIST_USER_STRUCT_S (\r | |
1970 | Entry,\r | |
1971 | UDP6_INSTANCE_DATA,\r | |
1972 | Link,\r | |
1973 | UDP6_INSTANCE_DATA_SIGNATURE\r | |
1974 | );\r | |
1975 | \r | |
1976 | if (Udp6Instance->Configured) {\r | |
1977 | NumConfiguredInstance++;\r | |
1978 | }\r | |
1979 | }\r | |
1980 | \r | |
1981 | //\r | |
1982 | // Calculate the size of the Udp6VariableData. As there may be no Udp6 child,\r | |
1983 | // we should add extra buffer for the service points only if the number of configured\r | |
1984 | // children is more than 1.\r | |
1985 | //\r | |
1986 | VariableDataSize = sizeof (EFI_UDP6_VARIABLE_DATA);\r | |
1987 | \r | |
1988 | if (NumConfiguredInstance > 1) {\r | |
1989 | VariableDataSize += sizeof (EFI_UDP6_SERVICE_POINT) * (NumConfiguredInstance - 1);\r | |
1990 | }\r | |
1991 | \r | |
1992 | Udp6VariableData = AllocateZeroPool (VariableDataSize);\r | |
1993 | if (Udp6VariableData == NULL) {\r | |
1994 | return EFI_OUT_OF_RESOURCES;\r | |
1995 | }\r | |
1996 | \r | |
1997 | Udp6VariableData->DriverHandle = Udp6Service->ImageHandle;\r | |
1998 | Udp6VariableData->ServiceCount = NumConfiguredInstance;\r | |
1999 | \r | |
2000 | Udp6ServicePoint = &Udp6VariableData->Services[0];\r | |
2001 | \r | |
2002 | //\r | |
2003 | // Go through the children list to fill the configured children's address pairs.\r | |
2004 | //\r | |
2005 | NET_LIST_FOR_EACH (Entry, &Udp6Service->ChildrenList) {\r | |
2006 | Udp6Instance = NET_LIST_USER_STRUCT_S (\r | |
2007 | Entry,\r | |
2008 | UDP6_INSTANCE_DATA,\r | |
2009 | Link,\r | |
2010 | UDP6_INSTANCE_DATA_SIGNATURE\r | |
2011 | );\r | |
2012 | \r | |
2013 | if (Udp6Instance->Configured) {\r | |
2014 | Udp6ServicePoint->InstanceHandle = Udp6Instance->ChildHandle;\r | |
2015 | Udp6ServicePoint->LocalPort = Udp6Instance->ConfigData.StationPort;\r | |
2016 | Udp6ServicePoint->RemotePort = Udp6Instance->ConfigData.RemotePort;\r | |
2017 | \r | |
2018 | IP6_COPY_ADDRESS (\r | |
2019 | &Udp6ServicePoint->LocalAddress,\r | |
2020 | &Udp6Instance->ConfigData.StationAddress\r | |
2021 | );\r | |
2022 | IP6_COPY_ADDRESS (\r | |
2023 | &Udp6ServicePoint->RemoteAddress,\r | |
2024 | &Udp6Instance->ConfigData.RemoteAddress\r | |
2025 | );\r | |
2026 | Udp6ServicePoint++;\r | |
2027 | }\r | |
2028 | }\r | |
2029 | \r | |
2030 | //\r | |
2031 | // Get the MAC string.\r | |
2032 | //\r | |
2033 | Status = NetLibGetMacString (\r | |
2034 | Udp6Service->ControllerHandle,\r | |
2035 | Udp6Service->ImageHandle,\r | |
2036 | &NewMacString\r | |
2037 | );\r | |
2038 | if (EFI_ERROR (Status)) {\r | |
2039 | goto EXIT;\r | |
2040 | }\r | |
2041 | \r | |
2042 | if (Udp6Service->MacString != NULL) {\r | |
2043 | //\r | |
2044 | // The variable is set already, we're going to update it.\r | |
2045 | //\r | |
2046 | if (StrCmp (Udp6Service->MacString, NewMacString) != 0) {\r | |
2047 | //\r | |
2048 | // The MAC address is changed, delete the previous variable first.\r | |
2049 | //\r | |
2050 | gRT->SetVariable (\r | |
2051 | Udp6Service->MacString,\r | |
2052 | &gEfiUdp6ServiceBindingProtocolGuid,\r | |
2053 | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
2054 | 0,\r | |
2055 | NULL\r | |
2056 | );\r | |
2057 | }\r | |
2058 | \r | |
2059 | FreePool (Udp6Service->MacString);\r | |
2060 | }\r | |
2061 | \r | |
2062 | Udp6Service->MacString = NewMacString;\r | |
2063 | \r | |
2064 | Status = gRT->SetVariable (\r | |
2065 | Udp6Service->MacString,\r | |
2066 | &gEfiUdp6ServiceBindingProtocolGuid,\r | |
2067 | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
2068 | VariableDataSize,\r | |
2069 | (VOID *) Udp6VariableData\r | |
2070 | );\r | |
2071 | \r | |
2072 | EXIT:\r | |
2073 | \r | |
2074 | FreePool (Udp6VariableData);\r | |
2075 | \r | |
2076 | return Status;\r | |
2077 | }\r | |
2078 | \r | |
2079 | \r | |
2080 | /**\r | |
2081 | Clear the variable and free the resource.\r | |
2082 | \r | |
2083 | @param[in, out] Udp6Service Udp6 service data.\r | |
2084 | \r | |
2085 | **/\r | |
2086 | VOID\r | |
2087 | Udp6ClearVariableData (\r | |
2088 | IN OUT UDP6_SERVICE_DATA *Udp6Service\r | |
2089 | )\r | |
2090 | {\r | |
2091 | ASSERT (Udp6Service->MacString != NULL);\r | |
2092 | \r | |
2093 | gRT->SetVariable (\r | |
2094 | Udp6Service->MacString,\r | |
2095 | &gEfiUdp6ServiceBindingProtocolGuid,\r | |
2096 | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
2097 | 0,\r | |
2098 | NULL\r | |
2099 | );\r | |
2100 | \r | |
2101 | FreePool (Udp6Service->MacString);\r | |
2102 | Udp6Service->MacString = NULL;\r | |
2103 | }\r | |
2104 | \r | |
2105 | \r | |
2106 | /**\r | |
2107 | Find the key in the netmap.\r | |
2108 | \r | |
2109 | @param[in] Map The netmap to search within.\r | |
2110 | @param[in] Key The key to search.\r | |
2111 | \r | |
2112 | @return The point to the item contains the Key, or NULL, if Key isn't in the map.\r | |
2113 | \r | |
2114 | **/\r | |
2115 | NET_MAP_ITEM *\r | |
2116 | Udp6MapMultiCastAddr (\r | |
2117 | IN NET_MAP *Map,\r | |
2118 | IN VOID *Key\r | |
2119 | )\r | |
2120 | {\r | |
2121 | LIST_ENTRY *Entry;\r | |
2122 | NET_MAP_ITEM *Item;\r | |
2123 | EFI_IPv6_ADDRESS *Addr;\r | |
2124 | \r | |
2125 | ASSERT (Map != NULL);\r | |
2126 | NET_LIST_FOR_EACH (Entry, &Map->Used) {\r | |
2127 | Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r | |
2128 | Addr = (EFI_IPv6_ADDRESS *) Item->Key;\r | |
2129 | if (EFI_IP6_EQUAL (Addr, Key)) {\r | |
2130 | return Item;\r | |
2131 | }\r | |
2132 | }\r | |
2133 | return NULL;\r | |
2134 | }\r | |
2135 | \r |