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8a67d61d | 1 | /** @file\r |
c57273b0 | 2 | Implementation of Managed Network Protocol I/O functions.\r |
3 | \r | |
4 | Copyright (c) 2005 - 2007, Intel Corporation. <BR>\r | |
8a67d61d | 5 | All rights reserved. This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
8a67d61d | 13 | **/\r |
14 | \r | |
19034421 | 15 | #include "MnpImpl.h"\r |
8a67d61d | 16 | #include <Library/NetLib.h>\r |
17 | #include <Library/BaseMemoryLib.h>\r | |
18 | #include <Library/BaseLib.h>\r | |
19 | #include <Library/MemoryAllocationLib.h>\r | |
8a67d61d | 20 | \r |
21 | \r | |
22 | /**\r | |
23 | Validates the Mnp transmit token.\r | |
24 | \r | |
25 | @param Instance Pointer to the Mnp instance context data.\r | |
26 | @param Token Pointer to the transmit token to check.\r | |
27 | \r | |
28 | @return The Token is valid or not.\r | |
29 | \r | |
30 | **/\r | |
31 | BOOLEAN\r | |
32 | MnpIsValidTxToken (\r | |
33 | IN MNP_INSTANCE_DATA *Instance,\r | |
34 | IN EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token\r | |
35 | )\r | |
36 | {\r | |
37 | MNP_SERVICE_DATA *MnpServiceData;\r | |
8a67d61d | 38 | EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData;\r |
39 | UINT32 Index;\r | |
40 | UINT32 TotalLength;\r | |
41 | EFI_MANAGED_NETWORK_FRAGMENT_DATA *FragmentTable;\r | |
42 | \r | |
43 | MnpServiceData = Instance->MnpServiceData;\r | |
44 | NET_CHECK_SIGNATURE (MnpServiceData, MNP_SERVICE_DATA_SIGNATURE);\r | |
45 | \r | |
8a67d61d | 46 | TxData = Token->Packet.TxData;\r |
47 | \r | |
48 | if ((Token->Event == NULL) || (TxData == NULL) || (TxData->FragmentCount == 0)) {\r | |
49 | //\r | |
50 | // The token is invalid if the Event is NULL, or the TxData is NULL, or\r | |
51 | // the fragment count is zero.\r | |
52 | //\r | |
e48e37fc | 53 | DEBUG ((EFI_D_WARN, "MnpIsValidTxToken: Invalid Token.\n"));\r |
8a67d61d | 54 | return FALSE;\r |
55 | }\r | |
56 | \r | |
57 | if ((TxData->DestinationAddress != NULL) && (TxData->HeaderLength != 0)) {\r | |
58 | //\r | |
59 | // The token is invalid if the HeaderLength isn't zero while the DestinationAddress\r | |
60 | // is NULL (The destination address is already put into the packet).\r | |
61 | //\r | |
e48e37fc | 62 | DEBUG ((EFI_D_WARN, "MnpIsValidTxToken: DestinationAddress isn't NULL, HeaderLength must be 0.\n"));\r |
8a67d61d | 63 | return FALSE;\r |
64 | }\r | |
65 | \r | |
66 | TotalLength = 0;\r | |
67 | FragmentTable = TxData->FragmentTable;\r | |
68 | for (Index = 0; Index < TxData->FragmentCount; Index++) {\r | |
69 | \r | |
70 | if ((FragmentTable[Index].FragmentLength == 0) || (FragmentTable[Index].FragmentBuffer == NULL)) {\r | |
71 | //\r | |
72 | // The token is invalid if any FragmentLength is zero or any FragmentBuffer is NULL.\r | |
73 | //\r | |
e48e37fc | 74 | DEBUG ((EFI_D_WARN, "MnpIsValidTxToken: Invalid FragmentLength or FragmentBuffer.\n"));\r |
8a67d61d | 75 | return FALSE;\r |
76 | }\r | |
77 | \r | |
78 | TotalLength += FragmentTable[Index].FragmentLength;\r | |
79 | }\r | |
80 | \r | |
81 | if ((TxData->DestinationAddress == NULL) && (FragmentTable[0].FragmentLength < TxData->HeaderLength)) {\r | |
82 | //\r | |
83 | // Media header is split between fragments.\r | |
84 | //\r | |
85 | return FALSE;\r | |
86 | }\r | |
87 | \r | |
88 | if (TotalLength != (TxData->DataLength + TxData->HeaderLength)) {\r | |
89 | //\r | |
90 | // The length calculated from the fragment information doesn't equal to the\r | |
91 | // sum of the DataLength and the HeaderLength.\r | |
92 | //\r | |
e48e37fc | 93 | DEBUG ((EFI_D_WARN, "MnpIsValidTxData: Invalid Datalength compared with the sum of fragment length.\n"));\r |
8a67d61d | 94 | return FALSE;\r |
95 | }\r | |
96 | \r | |
97 | if (TxData->DataLength > MnpServiceData->Mtu) {\r | |
98 | //\r | |
99 | // The total length is larger than the MTU.\r | |
100 | //\r | |
e48e37fc | 101 | DEBUG ((EFI_D_WARN, "MnpIsValidTxData: TxData->DataLength exceeds Mtu.\n"));\r |
8a67d61d | 102 | return FALSE;\r |
103 | }\r | |
104 | \r | |
105 | return TRUE;\r | |
106 | }\r | |
107 | \r | |
108 | \r | |
109 | /**\r | |
110 | Build the packet to transmit from the TxData passed in.\r | |
111 | \r | |
112 | @param MnpServiceData Pointer to the mnp service context data.\r | |
113 | @param TxData Pointer to the transmit data containing the\r | |
114 | information to build the packet.\r | |
115 | @param PktBuf Pointer to record the address of the packet.\r | |
116 | @param PktLen Pointer to a UINT32 variable used to record the\r | |
117 | packet's length.\r | |
118 | \r | |
8a67d61d | 119 | **/\r |
120 | VOID\r | |
121 | MnpBuildTxPacket (\r | |
122 | IN MNP_SERVICE_DATA *MnpServiceData,\r | |
123 | IN EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData,\r | |
124 | OUT UINT8 **PktBuf,\r | |
125 | OUT UINT32 *PktLen\r | |
126 | )\r | |
127 | {\r | |
128 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
129 | UINT8 *DstPos;\r | |
130 | UINT16 Index;\r | |
131 | \r | |
132 | if ((TxData->DestinationAddress == NULL) && (TxData->FragmentCount == 1)) {\r | |
133 | //\r | |
134 | // Media header is in FragmentTable and there is only one fragment,\r | |
135 | // use fragment buffer directly.\r | |
136 | //\r | |
137 | *PktBuf = TxData->FragmentTable[0].FragmentBuffer;\r | |
138 | *PktLen = TxData->FragmentTable[0].FragmentLength;\r | |
139 | } else {\r | |
140 | //\r | |
141 | // Either media header isn't in FragmentTable or there is more than\r | |
142 | // one fragment, copy the data into the packet buffer. Reserve the\r | |
143 | // media header space if necessary.\r | |
144 | //\r | |
145 | SnpMode = MnpServiceData->Snp->Mode;\r | |
146 | DstPos = MnpServiceData->TxBuf;\r | |
147 | \r | |
148 | *PktLen = 0;\r | |
149 | if (TxData->DestinationAddress != NULL) {\r | |
150 | //\r | |
151 | // If dest address is not NULL, move DstPos to reserve space for the\r | |
152 | // media header. Add the media header length to buflen.\r | |
153 | //\r | |
154 | DstPos += SnpMode->MediaHeaderSize;\r | |
155 | *PktLen += SnpMode->MediaHeaderSize;\r | |
156 | }\r | |
157 | \r | |
158 | for (Index = 0; Index < TxData->FragmentCount; Index++) {\r | |
159 | //\r | |
160 | // Copy the data.\r | |
161 | //\r | |
e48e37fc | 162 | CopyMem (\r |
8a67d61d | 163 | DstPos,\r |
164 | TxData->FragmentTable[Index].FragmentBuffer,\r | |
165 | TxData->FragmentTable[Index].FragmentLength\r | |
166 | );\r | |
167 | DstPos += TxData->FragmentTable[Index].FragmentLength;\r | |
168 | }\r | |
169 | \r | |
170 | //\r | |
171 | // Set the buffer pointer and the buffer length.\r | |
172 | //\r | |
173 | *PktBuf = MnpServiceData->TxBuf;\r | |
174 | *PktLen += TxData->DataLength + TxData->HeaderLength;\r | |
175 | }\r | |
176 | }\r | |
177 | \r | |
178 | \r | |
179 | /**\r | |
180 | Synchronously send out the packet.\r | |
181 | \r | |
182 | @param MnpServiceData Pointer to the mnp service context data.\r | |
183 | @param Packet Pointer to the pakcet buffer.\r | |
184 | @param Length The length of the packet.\r | |
185 | @param Token Pointer to the token the packet generated from.\r | |
186 | \r | |
187 | @retval EFI_SUCCESS The packet is sent out.\r | |
188 | @retval EFI_TIMEOUT Time out occurs, the packet isn't sent.\r | |
189 | @retval EFI_DEVICE_ERROR An unexpected network error occurs.\r | |
190 | \r | |
191 | **/\r | |
192 | EFI_STATUS\r | |
193 | MnpSyncSendPacket (\r | |
194 | IN MNP_SERVICE_DATA *MnpServiceData,\r | |
195 | IN UINT8 *Packet,\r | |
196 | IN UINT32 Length,\r | |
197 | IN EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token\r | |
198 | )\r | |
199 | {\r | |
200 | EFI_STATUS Status;\r | |
201 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
202 | EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData;\r | |
203 | UINT32 HeaderSize;\r | |
204 | UINT8 *TxBuf;\r | |
205 | \r | |
206 | Snp = MnpServiceData->Snp;\r | |
207 | TxData = Token->Packet.TxData;\r | |
208 | \r | |
209 | HeaderSize = Snp->Mode->MediaHeaderSize - TxData->HeaderLength;\r | |
210 | \r | |
211 | //\r | |
212 | // Start the timeout event.\r | |
213 | //\r | |
214 | Status = gBS->SetTimer (\r | |
215 | MnpServiceData->TxTimeoutEvent,\r | |
216 | TimerRelative,\r | |
217 | MNP_TX_TIMEOUT_TIME\r | |
218 | );\r | |
219 | if (EFI_ERROR (Status)) {\r | |
220 | \r | |
221 | goto SIGNAL_TOKEN;\r | |
222 | }\r | |
223 | \r | |
224 | for (;;) {\r | |
225 | //\r | |
226 | // Transmit the packet through SNP.\r | |
227 | //\r | |
228 | Status = Snp->Transmit (\r | |
229 | Snp,\r | |
230 | HeaderSize,\r | |
231 | Length,\r | |
232 | Packet,\r | |
233 | TxData->SourceAddress,\r | |
234 | TxData->DestinationAddress,\r | |
235 | &TxData->ProtocolType\r | |
236 | );\r | |
237 | if ((Status != EFI_SUCCESS) && (Status != EFI_NOT_READY)) {\r | |
238 | \r | |
239 | Status = EFI_DEVICE_ERROR;\r | |
240 | break;\r | |
241 | }\r | |
242 | \r | |
243 | //\r | |
244 | // If Status is EFI_SUCCESS, the packet is put in the transmit queue.\r | |
245 | // if Status is EFI_NOT_READY, the transmit engine of the network interface is busy.\r | |
246 | // Both need to sync SNP.\r | |
247 | //\r | |
248 | TxBuf = NULL;\r | |
249 | do {\r | |
250 | //\r | |
251 | // Get the recycled transmit buffer status.\r | |
252 | //\r | |
4eb65aff | 253 | Snp->GetStatus (Snp, NULL, (VOID **) &TxBuf);\r |
8a67d61d | 254 | \r |
255 | if (!EFI_ERROR (gBS->CheckEvent (MnpServiceData->TxTimeoutEvent))) {\r | |
256 | \r | |
257 | Status = EFI_TIMEOUT;\r | |
258 | break;\r | |
259 | }\r | |
260 | } while (TxBuf == NULL);\r | |
261 | \r | |
262 | if ((Status == EFI_SUCCESS) || (Status == EFI_TIMEOUT)) {\r | |
263 | \r | |
264 | break;\r | |
265 | } else {\r | |
266 | //\r | |
267 | // Status is EFI_NOT_READY. Restart the timer event and call Snp->Transmit again.\r | |
268 | //\r | |
269 | gBS->SetTimer (\r | |
270 | MnpServiceData->TxTimeoutEvent,\r | |
271 | TimerRelative,\r | |
272 | MNP_TX_TIMEOUT_TIME\r | |
273 | );\r | |
274 | }\r | |
275 | }\r | |
276 | \r | |
277 | //\r | |
278 | // Cancel the timer event.\r | |
279 | //\r | |
280 | gBS->SetTimer (MnpServiceData->TxTimeoutEvent, TimerCancel, 0);\r | |
281 | \r | |
282 | SIGNAL_TOKEN:\r | |
283 | \r | |
284 | Token->Status = Status;\r | |
285 | gBS->SignalEvent (Token->Event);\r | |
286 | \r | |
36ee91ca | 287 | //\r |
288 | // Dispatch the DPC queued by the NotifyFunction of Token->Event.\r | |
289 | //\r | |
290 | NetLibDispatchDpc ();\r | |
291 | \r | |
8a67d61d | 292 | return EFI_SUCCESS;\r |
293 | }\r | |
294 | \r | |
295 | \r | |
296 | /**\r | |
297 | Try to deliver the received packet to the instance.\r | |
298 | \r | |
299 | @param Instance Pointer to the mnp instance context data.\r | |
300 | \r | |
301 | @retval EFI_SUCCESS The received packet is delivered, or there is no\r | |
302 | packet to deliver, or there is no available receive\r | |
303 | token.\r | |
304 | @retval EFI_OUT_OF_RESOURCES The deliver fails due to lack of memory resource.\r | |
305 | \r | |
306 | **/\r | |
307 | EFI_STATUS\r | |
308 | MnpInstanceDeliverPacket (\r | |
309 | IN MNP_INSTANCE_DATA *Instance\r | |
310 | )\r | |
311 | {\r | |
312 | MNP_SERVICE_DATA *MnpServiceData;\r | |
313 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
314 | NET_BUF *DupNbuf;\r | |
315 | EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData;\r | |
316 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
317 | EFI_MANAGED_NETWORK_COMPLETION_TOKEN *RxToken;\r | |
318 | \r | |
319 | MnpServiceData = Instance->MnpServiceData;\r | |
320 | NET_CHECK_SIGNATURE (MnpServiceData, MNP_SERVICE_DATA_SIGNATURE);\r | |
321 | \r | |
e48e37fc | 322 | if (NetMapIsEmpty (&Instance->RxTokenMap) || IsListEmpty (&Instance->RcvdPacketQueue)) {\r |
8a67d61d | 323 | //\r |
324 | // No pending received data or no available receive token, return.\r | |
325 | //\r | |
326 | return EFI_SUCCESS;\r | |
327 | }\r | |
328 | \r | |
329 | ASSERT (Instance->RcvdPacketQueueSize != 0);\r | |
330 | \r | |
331 | RxDataWrap = NET_LIST_HEAD (&Instance->RcvdPacketQueue, MNP_RXDATA_WRAP, WrapEntry);\r | |
332 | if (RxDataWrap->Nbuf->RefCnt > 2) {\r | |
333 | //\r | |
334 | // There are other instances share this Nbuf, duplicate to get a\r | |
335 | // copy to allow the instance to do R/W operations.\r | |
336 | //\r | |
337 | DupNbuf = MnpAllocNbuf (MnpServiceData);\r | |
338 | if (DupNbuf == NULL) {\r | |
e48e37fc | 339 | DEBUG ((EFI_D_WARN, "MnpDeliverPacket: Failed to allocate a free Nbuf.\n"));\r |
8a67d61d | 340 | \r |
341 | return EFI_OUT_OF_RESOURCES;\r | |
342 | }\r | |
343 | \r | |
344 | //\r | |
345 | // Duplicate the net buffer.\r | |
346 | //\r | |
347 | NetbufDuplicate (RxDataWrap->Nbuf, DupNbuf, 0);\r | |
348 | MnpFreeNbuf (MnpServiceData, RxDataWrap->Nbuf);\r | |
349 | RxDataWrap->Nbuf = DupNbuf;\r | |
350 | }\r | |
351 | \r | |
352 | //\r | |
353 | // All resources are OK, remove the packet from the queue.\r | |
354 | //\r | |
355 | NetListRemoveHead (&Instance->RcvdPacketQueue);\r | |
356 | Instance->RcvdPacketQueueSize--;\r | |
357 | \r | |
358 | RxData = &RxDataWrap->RxData;\r | |
359 | SnpMode = MnpServiceData->Snp->Mode;\r | |
360 | \r | |
361 | //\r | |
362 | // Set all the buffer pointers.\r | |
363 | //\r | |
364 | RxData->MediaHeader = NetbufGetByte (RxDataWrap->Nbuf, 0, NULL);\r | |
365 | RxData->DestinationAddress = RxData->MediaHeader;\r | |
366 | RxData->SourceAddress = (UINT8 *) RxData->MediaHeader + SnpMode->HwAddressSize;\r | |
367 | RxData->PacketData = (UINT8 *) RxData->MediaHeader + SnpMode->MediaHeaderSize;\r | |
368 | \r | |
369 | //\r | |
370 | // Insert this RxDataWrap into the delivered queue.\r | |
371 | //\r | |
e48e37fc | 372 | InsertTailList (&Instance->RxDeliveredPacketQueue, &RxDataWrap->WrapEntry);\r |
8a67d61d | 373 | \r |
374 | //\r | |
375 | // Get the receive token from the RxTokenMap.\r | |
376 | //\r | |
377 | RxToken = NetMapRemoveHead (&Instance->RxTokenMap, NULL);\r | |
378 | \r | |
379 | //\r | |
380 | // Signal this token's event.\r | |
381 | //\r | |
382 | RxToken->Packet.RxData = &RxDataWrap->RxData;\r | |
383 | RxToken->Status = EFI_SUCCESS;\r | |
384 | gBS->SignalEvent (RxToken->Event);\r | |
385 | \r | |
386 | return EFI_SUCCESS;\r | |
387 | }\r | |
388 | \r | |
389 | \r | |
390 | /**\r | |
391 | Deliver the received packet for the instances belonging to the MnpServiceData.\r | |
392 | \r | |
393 | @param MnpServiceData Pointer to the mnp service context data.\r | |
394 | \r | |
395 | @return None.\r | |
396 | \r | |
397 | **/\r | |
8a67d61d | 398 | VOID\r |
399 | MnpDeliverPacket (\r | |
400 | IN MNP_SERVICE_DATA *MnpServiceData\r | |
401 | )\r | |
402 | {\r | |
e48e37fc | 403 | LIST_ENTRY *Entry;\r |
8a67d61d | 404 | MNP_INSTANCE_DATA *Instance;\r |
405 | \r | |
406 | NET_CHECK_SIGNATURE (MnpServiceData, MNP_SERVICE_DATA_SIGNATURE);\r | |
407 | \r | |
408 | NET_LIST_FOR_EACH (Entry, &MnpServiceData->ChildrenList) {\r | |
409 | Instance = NET_LIST_USER_STRUCT (Entry, MNP_INSTANCE_DATA, InstEntry);\r | |
410 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
411 | \r | |
412 | //\r | |
413 | // Try to deliver packet for this instance.\r | |
414 | //\r | |
415 | MnpInstanceDeliverPacket (Instance);\r | |
416 | }\r | |
417 | }\r | |
418 | \r | |
419 | \r | |
420 | /**\r | |
421 | Recycle the RxData and other resources used to hold and deliver the received\r | |
422 | packet.\r | |
423 | \r | |
424 | @param Event The event this notify function registered to.\r | |
425 | @param Context Pointer to the context data registerd to the Event.\r | |
426 | \r | |
8a67d61d | 427 | **/\r |
428 | VOID\r | |
429 | EFIAPI\r | |
430 | MnpRecycleRxData (\r | |
431 | IN EFI_EVENT Event,\r | |
432 | IN VOID *Context\r | |
433 | )\r | |
434 | {\r | |
435 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
436 | MNP_SERVICE_DATA *MnpServiceData;\r | |
437 | \r | |
438 | ASSERT (Context != NULL);\r | |
439 | \r | |
440 | RxDataWrap = (MNP_RXDATA_WRAP *) Context;\r | |
441 | NET_CHECK_SIGNATURE (RxDataWrap->Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
442 | \r | |
443 | ASSERT (RxDataWrap->Nbuf != NULL);\r | |
444 | \r | |
445 | MnpServiceData = RxDataWrap->Instance->MnpServiceData;\r | |
446 | NET_CHECK_SIGNATURE (MnpServiceData, MNP_SERVICE_DATA_SIGNATURE);\r | |
447 | \r | |
448 | //\r | |
449 | // Free this Nbuf.\r | |
450 | //\r | |
451 | MnpFreeNbuf (MnpServiceData, RxDataWrap->Nbuf);\r | |
452 | RxDataWrap->Nbuf = NULL;\r | |
453 | \r | |
454 | //\r | |
455 | // Close the recycle event.\r | |
456 | //\r | |
457 | gBS->CloseEvent (RxDataWrap->RxData.RecycleEvent);\r | |
458 | \r | |
459 | //\r | |
460 | // Remove this Wrap entry from the list.\r | |
461 | //\r | |
e48e37fc | 462 | RemoveEntryList (&RxDataWrap->WrapEntry);\r |
8a67d61d | 463 | \r |
e48e37fc | 464 | gBS->FreePool (RxDataWrap);\r |
8a67d61d | 465 | }\r |
466 | \r | |
467 | \r | |
468 | /**\r | |
469 | Queue the received packet into instance's receive queue.\r | |
470 | \r | |
471 | @param Instance Pointer to the mnp instance context data.\r | |
472 | @param RxDataWrap Pointer to the Wrap structure containing the\r | |
473 | received data and other information.\r | |
474 | \r | |
475 | @return None.\r | |
476 | \r | |
477 | **/\r | |
8a67d61d | 478 | VOID\r |
479 | MnpQueueRcvdPacket (\r | |
480 | IN MNP_INSTANCE_DATA *Instance,\r | |
481 | IN MNP_RXDATA_WRAP *RxDataWrap\r | |
482 | )\r | |
483 | {\r | |
484 | MNP_RXDATA_WRAP *OldRxDataWrap;\r | |
485 | \r | |
486 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
487 | \r | |
488 | //\r | |
489 | // Check the queue size. If it exceeds the limit, drop one packet\r | |
490 | // from the head.\r | |
491 | //\r | |
492 | if (Instance->RcvdPacketQueueSize == MNP_MAX_RCVD_PACKET_QUE_SIZE) {\r | |
493 | \r | |
e48e37fc | 494 | DEBUG ((EFI_D_WARN, "MnpQueueRcvdPacket: Drop one packet bcz queue size limit reached.\n"));\r |
8a67d61d | 495 | \r |
496 | //\r | |
497 | // Get the oldest packet.\r | |
498 | //\r | |
499 | OldRxDataWrap = NET_LIST_HEAD (\r | |
500 | &Instance->RcvdPacketQueue,\r | |
501 | MNP_RXDATA_WRAP,\r | |
502 | WrapEntry\r | |
503 | );\r | |
504 | \r | |
505 | //\r | |
506 | // Recycle this OldRxDataWrap, this entry will be removed by the callee.\r | |
507 | //\r | |
508 | MnpRecycleRxData (NULL, (VOID *) OldRxDataWrap);\r | |
509 | Instance->RcvdPacketQueueSize--;\r | |
510 | }\r | |
511 | \r | |
512 | //\r | |
513 | // Update the timeout tick using the configured parameter.\r | |
514 | //\r | |
515 | RxDataWrap->TimeoutTick = Instance->ConfigData.ReceivedQueueTimeoutValue;\r | |
516 | \r | |
517 | //\r | |
518 | // Insert this Wrap into the instance queue.\r | |
519 | //\r | |
e48e37fc | 520 | InsertTailList (&Instance->RcvdPacketQueue, &RxDataWrap->WrapEntry);\r |
8a67d61d | 521 | Instance->RcvdPacketQueueSize++;\r |
522 | }\r | |
523 | \r | |
524 | \r | |
525 | /**\r | |
526 | Match the received packet with the instance receive filters.\r | |
527 | \r | |
528 | @param Instance Pointer to the mnp instance context data.\r | |
529 | @param RxData Pointer to the EFI_MANAGED_NETWORK_RECEIVE_DATA.\r | |
530 | @param GroupAddress Pointer to the GroupAddress, the GroupAddress is\r | |
531 | non-NULL and it contains the destination multicast\r | |
532 | mac address of the received packet if the packet\r | |
533 | destinated to a multicast mac address.\r | |
534 | @param PktAttr The received packets attribute.\r | |
535 | \r | |
536 | @return The received packet matches the instance's receive filters or not.\r | |
537 | \r | |
538 | **/\r | |
8a67d61d | 539 | BOOLEAN\r |
540 | MnpMatchPacket (\r | |
541 | IN MNP_INSTANCE_DATA *Instance,\r | |
542 | IN EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData,\r | |
543 | IN MNP_GROUP_ADDRESS *GroupAddress OPTIONAL,\r | |
544 | IN UINT8 PktAttr\r | |
545 | )\r | |
546 | {\r | |
547 | EFI_MANAGED_NETWORK_CONFIG_DATA *ConfigData;\r | |
e48e37fc | 548 | LIST_ENTRY *Entry;\r |
8a67d61d | 549 | MNP_GROUP_CONTROL_BLOCK *GroupCtrlBlk;\r |
550 | \r | |
551 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
552 | \r | |
553 | ConfigData = &Instance->ConfigData;\r | |
554 | \r | |
8a67d61d | 555 | //\r |
556 | // Check the protocol type.\r | |
557 | //\r | |
558 | if ((ConfigData->ProtocolTypeFilter != 0) && (ConfigData->ProtocolTypeFilter != RxData->ProtocolType)) {\r | |
559 | return FALSE;\r | |
560 | }\r | |
561 | \r | |
36ee91ca | 562 | if (ConfigData->EnablePromiscuousReceive) {\r |
563 | //\r | |
564 | // Always match if this instance is configured to be promiscuous.\r | |
565 | //\r | |
566 | return TRUE;\r | |
567 | }\r | |
568 | \r | |
8a67d61d | 569 | //\r |
570 | // The protocol type is matched, check receive filter, include unicast and broadcast.\r | |
571 | //\r | |
572 | if ((Instance->ReceiveFilter & PktAttr) != 0) {\r | |
573 | return TRUE;\r | |
574 | }\r | |
575 | \r | |
576 | //\r | |
577 | // Check multicast addresses.\r | |
578 | //\r | |
579 | if (ConfigData->EnableMulticastReceive && RxData->MulticastFlag) {\r | |
580 | \r | |
581 | ASSERT (GroupAddress != NULL);\r | |
582 | \r | |
583 | NET_LIST_FOR_EACH (Entry, &Instance->GroupCtrlBlkList) {\r | |
584 | \r | |
585 | GroupCtrlBlk = NET_LIST_USER_STRUCT (Entry, MNP_GROUP_CONTROL_BLOCK, CtrlBlkEntry);\r | |
586 | if (GroupCtrlBlk->GroupAddress == GroupAddress) {\r | |
587 | //\r | |
588 | // The instance is configured to receiveing packets destinated to this\r | |
589 | // multicast address.\r | |
590 | //\r | |
591 | return TRUE;\r | |
592 | }\r | |
593 | }\r | |
594 | }\r | |
595 | \r | |
596 | //\r | |
597 | // No match.\r | |
598 | //\r | |
599 | return FALSE;\r | |
600 | }\r | |
601 | \r | |
602 | \r | |
603 | /**\r | |
604 | Analyse the received packets.\r | |
605 | \r | |
606 | @param MnpServiceData Pointer to the mnp service context data.\r | |
607 | @param Nbuf Pointer to the net buffer holding the received\r | |
608 | packet.\r | |
609 | @param RxData Pointer to the buffer used to save the analysed\r | |
610 | result in EFI_MANAGED_NETWORK_RECEIVE_DATA.\r | |
611 | @param GroupAddress Pointer to pointer to a MNP_GROUP_ADDRESS used to\r | |
612 | pass out the address of the multicast address the\r | |
613 | received packet destinated to.\r | |
614 | @param PktAttr Pointer to the buffer used to save the analysed\r | |
615 | packet attribute.\r | |
616 | \r | |
617 | @return None.\r | |
618 | \r | |
619 | **/\r | |
8a67d61d | 620 | VOID\r |
621 | MnpAnalysePacket (\r | |
622 | IN MNP_SERVICE_DATA *MnpServiceData,\r | |
623 | IN NET_BUF *Nbuf,\r | |
624 | IN EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData,\r | |
625 | OUT MNP_GROUP_ADDRESS **GroupAddress,\r | |
626 | OUT UINT8 *PktAttr\r | |
627 | )\r | |
628 | {\r | |
629 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
630 | UINT8 *BufPtr;\r | |
e48e37fc | 631 | LIST_ENTRY *Entry;\r |
8a67d61d | 632 | \r |
633 | SnpMode = MnpServiceData->Snp->Mode;\r | |
634 | \r | |
635 | //\r | |
636 | // Get the packet buffer.\r | |
637 | //\r | |
638 | BufPtr = NetbufGetByte (Nbuf, 0, NULL);\r | |
639 | ASSERT (BufPtr != NULL);\r | |
640 | \r | |
641 | //\r | |
642 | // Set the initial values.\r | |
643 | //\r | |
644 | RxData->BroadcastFlag = FALSE;\r | |
645 | RxData->MulticastFlag = FALSE;\r | |
646 | RxData->PromiscuousFlag = FALSE;\r | |
647 | *PktAttr = UNICAST_PACKET;\r | |
648 | \r | |
649 | if (!NET_MAC_EQUAL (&SnpMode->CurrentAddress, BufPtr, SnpMode->HwAddressSize)) {\r | |
650 | //\r | |
651 | // This packet isn't destinated to our current mac address, it't not unicast.\r | |
652 | //\r | |
653 | *PktAttr = 0;\r | |
654 | \r | |
655 | if (NET_MAC_EQUAL (&SnpMode->BroadcastAddress, BufPtr, SnpMode->HwAddressSize)) {\r | |
656 | //\r | |
657 | // It's broadcast.\r | |
658 | //\r | |
659 | RxData->BroadcastFlag = TRUE;\r | |
660 | *PktAttr = BROADCAST_PACKET;\r | |
661 | } else if ((*BufPtr & 0x01) == 0x1) {\r | |
662 | //\r | |
663 | // It's multicast, try to match the multicast filters.\r | |
664 | //\r | |
665 | NET_LIST_FOR_EACH (Entry, &MnpServiceData->GroupAddressList) {\r | |
666 | \r | |
667 | *GroupAddress = NET_LIST_USER_STRUCT (Entry, MNP_GROUP_ADDRESS, AddrEntry);\r | |
668 | if (NET_MAC_EQUAL (BufPtr, &((*GroupAddress)->Address), SnpMode->HwAddressSize)) {\r | |
669 | RxData->MulticastFlag = TRUE;\r | |
670 | break;\r | |
671 | }\r | |
672 | }\r | |
673 | \r | |
674 | if (!RxData->MulticastFlag) {\r | |
675 | //\r | |
676 | // No match, set GroupAddress to NULL. This multicast packet must\r | |
677 | // be the result of PROMISUCOUS or PROMISUCOUS_MULTICAST flag is on.\r | |
678 | //\r | |
679 | *GroupAddress = NULL;\r | |
680 | RxData->PromiscuousFlag = TRUE;\r | |
681 | \r | |
682 | if (MnpServiceData->PromiscuousCount == 0) {\r | |
683 | //\r | |
684 | // Skip the below code, there is no receiver of this packet.\r | |
685 | //\r | |
686 | return ;\r | |
687 | }\r | |
688 | }\r | |
689 | } else {\r | |
690 | RxData->PromiscuousFlag = TRUE;\r | |
691 | }\r | |
692 | }\r | |
693 | \r | |
e48e37fc | 694 | ZeroMem (&RxData->Timestamp, sizeof (EFI_TIME));\r |
8a67d61d | 695 | \r |
696 | //\r | |
697 | // Fill the common parts of RxData.\r | |
698 | //\r | |
699 | RxData->PacketLength = Nbuf->TotalSize;\r | |
700 | RxData->HeaderLength = SnpMode->MediaHeaderSize;\r | |
701 | RxData->AddressLength = SnpMode->HwAddressSize;\r | |
702 | RxData->DataLength = RxData->PacketLength - RxData->HeaderLength;\r | |
703 | RxData->ProtocolType = NTOHS (*(UINT16 *) (BufPtr + 2 * SnpMode->HwAddressSize));\r | |
704 | }\r | |
705 | \r | |
706 | \r | |
707 | /**\r | |
708 | Wrap the RxData.\r | |
709 | \r | |
710 | @param Instance Pointer to the mnp instance context data.\r | |
711 | @param RxData Pointer to the receive data to wrap.\r | |
712 | \r | |
713 | @return Pointer to a MNP_RXDATA_WRAP which wraps the RxData.\r | |
714 | \r | |
715 | **/\r | |
8a67d61d | 716 | MNP_RXDATA_WRAP *\r |
717 | MnpWrapRxData (\r | |
718 | IN MNP_INSTANCE_DATA *Instance,\r | |
719 | IN EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData\r | |
720 | )\r | |
721 | {\r | |
722 | EFI_STATUS Status;\r | |
723 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
724 | \r | |
725 | //\r | |
726 | // Allocate memory.\r | |
727 | //\r | |
e48e37fc | 728 | RxDataWrap = AllocatePool (sizeof (MNP_RXDATA_WRAP));\r |
8a67d61d | 729 | if (RxDataWrap == NULL) {\r |
e48e37fc | 730 | DEBUG ((EFI_D_ERROR, "MnpDispatchPacket: Failed to allocate a MNP_RXDATA_WRAP.\n"));\r |
8a67d61d | 731 | return NULL;\r |
732 | }\r | |
733 | \r | |
734 | RxDataWrap->Instance = Instance;\r | |
735 | \r | |
736 | //\r | |
737 | // Fill the RxData in RxDataWrap,\r | |
738 | //\r | |
687a2e5f | 739 | CopyMem (&RxDataWrap->RxData, RxData, sizeof (RxDataWrap->RxData));\r |
8a67d61d | 740 | \r |
741 | //\r | |
742 | // Create the recycle event.\r | |
743 | //\r | |
744 | Status = gBS->CreateEvent (\r | |
745 | EVT_NOTIFY_SIGNAL,\r | |
e48e37fc | 746 | TPL_NOTIFY,\r |
8a67d61d | 747 | MnpRecycleRxData,\r |
748 | RxDataWrap,\r | |
749 | &RxDataWrap->RxData.RecycleEvent\r | |
750 | );\r | |
751 | if (EFI_ERROR (Status)) {\r | |
752 | \r | |
e48e37fc | 753 | DEBUG ((EFI_D_ERROR, "MnpDispatchPacket: gBS->CreateEvent failed, %r.\n", Status));\r |
754 | gBS->FreePool (RxDataWrap);\r | |
8a67d61d | 755 | return NULL;\r |
756 | }\r | |
757 | \r | |
758 | return RxDataWrap;\r | |
759 | }\r | |
760 | \r | |
761 | \r | |
762 | /**\r | |
763 | Enqueue the received the packets to the instances belonging to the\r | |
764 | MnpServiceData.\r | |
765 | \r | |
766 | @param MnpServiceData Pointer to the mnp service context data.\r | |
767 | @param Nbuf Pointer to the net buffer representing the received\r | |
768 | packet.\r | |
769 | \r | |
770 | @return None.\r | |
771 | \r | |
772 | **/\r | |
8a67d61d | 773 | VOID\r |
774 | MnpEnqueuePacket (\r | |
775 | IN MNP_SERVICE_DATA *MnpServiceData,\r | |
776 | IN NET_BUF *Nbuf\r | |
777 | )\r | |
778 | {\r | |
e48e37fc | 779 | LIST_ENTRY *Entry;\r |
8a67d61d | 780 | MNP_INSTANCE_DATA *Instance;\r |
781 | EFI_MANAGED_NETWORK_RECEIVE_DATA RxData;\r | |
782 | UINT8 PktAttr;\r | |
783 | MNP_GROUP_ADDRESS *GroupAddress;\r | |
784 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
785 | \r | |
67a58d0f | 786 | \r |
787 | GroupAddress = NULL;\r | |
8a67d61d | 788 | //\r |
789 | // First, analyse the packet header.\r | |
790 | //\r | |
791 | MnpAnalysePacket (MnpServiceData, Nbuf, &RxData, &GroupAddress, &PktAttr);\r | |
792 | \r | |
793 | if (RxData.PromiscuousFlag && (MnpServiceData->PromiscuousCount == 0)) {\r | |
794 | //\r | |
795 | // No receivers, no more action need.\r | |
796 | //\r | |
797 | return ;\r | |
798 | }\r | |
799 | \r | |
800 | //\r | |
801 | // Iterate the children to find match.\r | |
802 | //\r | |
803 | NET_LIST_FOR_EACH (Entry, &MnpServiceData->ChildrenList) {\r | |
804 | \r | |
805 | Instance = NET_LIST_USER_STRUCT (Entry, MNP_INSTANCE_DATA, InstEntry);\r | |
806 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
807 | \r | |
808 | if (!Instance->Configured) {\r | |
809 | continue;\r | |
810 | }\r | |
811 | \r | |
812 | //\r | |
813 | // Check the packet against the instance receive filters.\r | |
814 | //\r | |
815 | if (MnpMatchPacket (Instance, &RxData, GroupAddress, PktAttr)) {\r | |
816 | \r | |
817 | //\r | |
818 | // Wrap the RxData.\r | |
819 | //\r | |
687a2e5f | 820 | RxDataWrap = MnpWrapRxData (Instance, &RxData);\r |
8a67d61d | 821 | if (RxDataWrap == NULL) {\r |
822 | continue;\r | |
823 | }\r | |
824 | \r | |
825 | //\r | |
826 | // Associate RxDataWrap with Nbuf and increase the RefCnt.\r | |
827 | //\r | |
828 | RxDataWrap->Nbuf = Nbuf;\r | |
829 | NET_GET_REF (RxDataWrap->Nbuf);\r | |
830 | \r | |
831 | //\r | |
832 | // Queue the packet into the instance queue.\r | |
833 | //\r | |
834 | MnpQueueRcvdPacket (Instance, RxDataWrap);\r | |
835 | }\r | |
836 | }\r | |
837 | }\r | |
838 | \r | |
839 | \r | |
840 | /**\r | |
841 | Try to receive a packet and deliver it.\r | |
842 | \r | |
843 | @param MnpServiceData Pointer to the mnp service context data.\r | |
844 | \r | |
845 | @retval EFI_SUCCESS add return value to function comment\r | |
846 | @retval EFI_NOT_STARTED The simple network protocol is not started.\r | |
847 | @retval EFI_NOT_READY No packet received.\r | |
848 | @retval EFI_DEVICE_ERROR An unexpected error occurs.\r | |
849 | \r | |
850 | **/\r | |
851 | EFI_STATUS\r | |
852 | MnpReceivePacket (\r | |
853 | IN MNP_SERVICE_DATA *MnpServiceData\r | |
854 | )\r | |
855 | {\r | |
856 | EFI_STATUS Status;\r | |
857 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
858 | NET_BUF *Nbuf;\r | |
859 | UINT8 *BufPtr;\r | |
860 | UINTN BufLen;\r | |
861 | UINTN HeaderSize;\r | |
862 | UINT32 Trimmed;\r | |
863 | \r | |
864 | NET_CHECK_SIGNATURE (MnpServiceData, MNP_SERVICE_DATA_SIGNATURE);\r | |
865 | \r | |
866 | Snp = MnpServiceData->Snp;\r | |
867 | if (Snp->Mode->State != EfiSimpleNetworkInitialized) {\r | |
868 | //\r | |
869 | // The simple network protocol is not started.\r | |
870 | //\r | |
871 | return EFI_NOT_STARTED;\r | |
872 | }\r | |
873 | \r | |
e48e37fc | 874 | if (IsListEmpty (&MnpServiceData->ChildrenList)) {\r |
8a67d61d | 875 | //\r |
876 | // There is no child, no need to receive packets.\r | |
877 | //\r | |
878 | return EFI_SUCCESS;\r | |
879 | }\r | |
880 | \r | |
881 | if (MnpServiceData->RxNbufCache == NULL) {\r | |
882 | //\r | |
883 | // Try to get a new buffer as there may be buffers recycled.\r | |
884 | //\r | |
885 | MnpServiceData->RxNbufCache = MnpAllocNbuf (MnpServiceData);\r | |
886 | \r | |
887 | if (MnpServiceData->RxNbufCache == NULL) {\r | |
888 | //\r | |
889 | // No availabe buffer in the buffer pool.\r | |
890 | //\r | |
891 | return EFI_DEVICE_ERROR;\r | |
892 | }\r | |
893 | \r | |
894 | NetbufAllocSpace (\r | |
895 | MnpServiceData->RxNbufCache,\r | |
896 | MnpServiceData->BufferLength,\r | |
897 | NET_BUF_TAIL\r | |
898 | );\r | |
899 | }\r | |
900 | \r | |
901 | Nbuf = MnpServiceData->RxNbufCache;\r | |
902 | BufLen = Nbuf->TotalSize;\r | |
903 | BufPtr = NetbufGetByte (Nbuf, 0, NULL);\r | |
904 | ASSERT (BufPtr != NULL);\r | |
905 | \r | |
906 | //\r | |
907 | // Receive packet through Snp.\r | |
908 | //\r | |
909 | Status = Snp->Receive (Snp, &HeaderSize, &BufLen, BufPtr, NULL, NULL, NULL);\r | |
910 | if (EFI_ERROR (Status)) {\r | |
911 | \r | |
912 | DEBUG_CODE (\r | |
913 | if (Status != EFI_NOT_READY) {\r | |
982a9eae | 914 | DEBUG ((EFI_D_WARN, "MnpReceivePacket: Snp->Receive() = %r.\n", Status));\r |
915 | }\r | |
8a67d61d | 916 | );\r |
917 | \r | |
918 | return Status;\r | |
919 | }\r | |
920 | \r | |
921 | //\r | |
922 | // Sanity check.\r | |
923 | //\r | |
924 | if ((HeaderSize != Snp->Mode->MediaHeaderSize) || (BufLen < HeaderSize)) {\r | |
925 | \r | |
e48e37fc | 926 | DEBUG (\r |
927 | (EFI_D_WARN,\r | |
928 | "MnpReceivePacket: Size error, HL:TL = %d:%d.\n",\r | |
8a67d61d | 929 | HeaderSize,\r |
930 | BufLen)\r | |
931 | );\r | |
932 | return EFI_DEVICE_ERROR;\r | |
933 | }\r | |
934 | \r | |
935 | Trimmed = 0;\r | |
936 | if (Nbuf->TotalSize != BufLen) {\r | |
937 | //\r | |
938 | // Trim the packet from tail.\r | |
939 | //\r | |
940 | Trimmed = NetbufTrim (Nbuf, Nbuf->TotalSize - (UINT32) BufLen, NET_BUF_TAIL);\r | |
941 | ASSERT (Nbuf->TotalSize == BufLen);\r | |
942 | }\r | |
943 | \r | |
944 | //\r | |
945 | // Enqueue the packet to the matched instances.\r | |
946 | //\r | |
947 | MnpEnqueuePacket (MnpServiceData, Nbuf);\r | |
948 | \r | |
949 | if (Nbuf->RefCnt > 2) {\r | |
950 | //\r | |
951 | // RefCnt > 2 indicates there is at least one receiver of this packet.\r | |
952 | // Free the current RxNbufCache and allocate a new one.\r | |
953 | //\r | |
954 | MnpFreeNbuf (MnpServiceData, Nbuf);\r | |
955 | \r | |
956 | Nbuf = MnpAllocNbuf (MnpServiceData);\r | |
957 | MnpServiceData->RxNbufCache = Nbuf;\r | |
958 | if (Nbuf == NULL) {\r | |
e48e37fc | 959 | DEBUG ((EFI_D_ERROR, "MnpReceivePacket: Alloc packet for receiving cache failed.\n"));\r |
8a67d61d | 960 | return EFI_DEVICE_ERROR;\r |
961 | }\r | |
962 | \r | |
963 | NetbufAllocSpace (Nbuf, MnpServiceData->BufferLength, NET_BUF_TAIL);\r | |
964 | } else {\r | |
965 | //\r | |
966 | // No receiver for this packet.\r | |
967 | //\r | |
772db4bb | 968 | if (Trimmed > 0) {\r |
969 | NetbufAllocSpace (Nbuf, Trimmed, NET_BUF_TAIL);\r | |
970 | }\r | |
971 | \r | |
8a67d61d | 972 | goto EXIT;\r |
973 | }\r | |
974 | //\r | |
975 | // Deliver the queued packets.\r | |
976 | //\r | |
977 | MnpDeliverPacket (MnpServiceData);\r | |
978 | \r | |
36ee91ca | 979 | //\r |
980 | // Dispatch the DPC queued by the NotifyFunction of rx token's events.\r | |
981 | //\r | |
982 | NetLibDispatchDpc ();\r | |
983 | \r | |
8a67d61d | 984 | EXIT:\r |
985 | \r | |
986 | ASSERT (Nbuf->TotalSize == MnpServiceData->BufferLength);\r | |
987 | \r | |
988 | return Status;\r | |
989 | }\r | |
990 | \r | |
991 | \r | |
992 | /**\r | |
993 | Remove the received packets if timeout occurs.\r | |
994 | \r | |
995 | @param Event The event this notify function registered to.\r | |
996 | @param Context Pointer to the context data registered to the\r | |
997 | event.\r | |
b6c4ecad | 998 | \r |
8a67d61d | 999 | **/\r |
1000 | VOID\r | |
1001 | EFIAPI\r | |
1002 | MnpCheckPacketTimeout (\r | |
1003 | IN EFI_EVENT Event,\r | |
1004 | IN VOID *Context\r | |
1005 | )\r | |
1006 | {\r | |
1007 | MNP_SERVICE_DATA *MnpServiceData;\r | |
e48e37fc | 1008 | LIST_ENTRY *Entry;\r |
1009 | LIST_ENTRY *RxEntry;\r | |
1010 | LIST_ENTRY *NextEntry;\r | |
8a67d61d | 1011 | MNP_INSTANCE_DATA *Instance;\r |
1012 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
1013 | EFI_TPL OldTpl;\r | |
1014 | \r | |
1015 | MnpServiceData = (MNP_SERVICE_DATA *) Context;\r | |
1016 | NET_CHECK_SIGNATURE (MnpServiceData, MNP_SERVICE_DATA_SIGNATURE);\r | |
1017 | \r | |
1018 | NET_LIST_FOR_EACH (Entry, &MnpServiceData->ChildrenList) {\r | |
1019 | \r | |
1020 | Instance = NET_LIST_USER_STRUCT (Entry, MNP_INSTANCE_DATA, InstEntry);\r | |
1021 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
1022 | \r | |
1023 | if (!Instance->Configured || (Instance->ConfigData.ReceivedQueueTimeoutValue == 0)) {\r | |
1024 | //\r | |
1025 | // This instance is not configured or there is no receive time out,\r | |
1026 | // just skip to the next instance.\r | |
1027 | //\r | |
1028 | continue;\r | |
1029 | }\r | |
1030 | \r | |
e48e37fc | 1031 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r |
8a67d61d | 1032 | \r |
1033 | NET_LIST_FOR_EACH_SAFE (RxEntry, NextEntry, &Instance->RcvdPacketQueue) {\r | |
1034 | \r | |
1035 | RxDataWrap = NET_LIST_USER_STRUCT (RxEntry, MNP_RXDATA_WRAP, WrapEntry);\r | |
1036 | \r | |
48bd50c5 | 1037 | //\r |
1038 | // TimeoutTick unit is ms, MNP_TIMEOUT_CHECK_INTERVAL unit is 100ns.\r | |
1039 | //\r | |
1040 | if (RxDataWrap->TimeoutTick >= (MNP_TIMEOUT_CHECK_INTERVAL / 10)) {\r | |
8a67d61d | 1041 | \r |
48bd50c5 | 1042 | RxDataWrap->TimeoutTick -= (MNP_TIMEOUT_CHECK_INTERVAL / 10);\r |
8a67d61d | 1043 | } else {\r |
1044 | //\r | |
1045 | // Drop the timeout packet.\r | |
1046 | //\r | |
e48e37fc | 1047 | DEBUG ((EFI_D_WARN, "MnpCheckPacketTimeout: Received packet timeout.\n"));\r |
8a67d61d | 1048 | MnpRecycleRxData (NULL, RxDataWrap);\r |
1049 | Instance->RcvdPacketQueueSize--;\r | |
1050 | }\r | |
1051 | }\r | |
1052 | \r | |
e48e37fc | 1053 | gBS->RestoreTPL (OldTpl);\r |
8a67d61d | 1054 | }\r |
1055 | }\r | |
1056 | \r | |
1057 | \r | |
1058 | /**\r | |
1059 | Poll to receive the packets from Snp. This function is either called by upperlayer\r | |
1060 | protocols/applications or the system poll timer notify mechanism.\r | |
1061 | \r | |
1062 | @param Event The event this notify function registered to.\r | |
1063 | @param Context Pointer to the context data registered to the\r | |
1064 | event.\r | |
1065 | \r | |
8a67d61d | 1066 | **/\r |
1067 | VOID\r | |
1068 | EFIAPI\r | |
1069 | MnpSystemPoll (\r | |
1070 | IN EFI_EVENT Event,\r | |
1071 | IN VOID *Context\r | |
1072 | )\r | |
1073 | {\r | |
1074 | MNP_SERVICE_DATA *MnpServiceData;\r | |
1075 | \r | |
1076 | MnpServiceData = (MNP_SERVICE_DATA *) Context;\r | |
1077 | NET_CHECK_SIGNATURE (MnpServiceData, MNP_SERVICE_DATA_SIGNATURE);\r | |
1078 | \r | |
1079 | //\r | |
1080 | // Try to receive packets from Snp.\r | |
1081 | //\r | |
1082 | MnpReceivePacket (MnpServiceData);\r | |
36ee91ca | 1083 | \r |
1084 | NetLibDispatchDpc ();\r | |
8a67d61d | 1085 | }\r |