]>
Commit | Line | Data |
---|---|---|
8a67d61d | 1 | /** @file\r |
3e8c18da | 2 | Implementation of Managed Network Protocol I/O functions.\r |
779ae357 | 3 | \r |
4 | Copyright (c) 2005 - 2009, Intel Corporation.<BR>\r | |
8a67d61d | 5 | All rights reserved. This program and the accompanying materials\r |
779ae357 | 6 | are licensed and made available under the terms and conditions\r |
7 | of the BSD License which accompanies this distribution. The full\r | |
8 | text of the license may be found at<BR>\r | |
8a67d61d | 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 | |
8a67d61d | 14 | **/\r |
15 | \r | |
19034421 | 16 | #include "MnpImpl.h"\r |
779ae357 | 17 | #include "MnpVlan.h"\r |
8a67d61d | 18 | \r |
19 | /**\r | |
20 | Validates the Mnp transmit token.\r | |
21 | \r | |
6e4bac4d | 22 | @param[in] Instance Pointer to the Mnp instance context data.\r |
23 | @param[in] Token Pointer to the transmit token to check.\r | |
8a67d61d | 24 | \r |
25 | @return The Token is valid or not.\r | |
26 | \r | |
27 | **/\r | |
28 | BOOLEAN\r | |
29 | MnpIsValidTxToken (\r | |
779ae357 | 30 | IN MNP_INSTANCE_DATA *Instance,\r |
31 | IN EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token\r | |
8a67d61d | 32 | )\r |
33 | {\r | |
34 | MNP_SERVICE_DATA *MnpServiceData;\r | |
8a67d61d | 35 | EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData;\r |
36 | UINT32 Index;\r | |
37 | UINT32 TotalLength;\r | |
38 | EFI_MANAGED_NETWORK_FRAGMENT_DATA *FragmentTable;\r | |
39 | \r | |
40 | MnpServiceData = Instance->MnpServiceData;\r | |
41 | NET_CHECK_SIGNATURE (MnpServiceData, MNP_SERVICE_DATA_SIGNATURE);\r | |
42 | \r | |
779ae357 | 43 | TxData = Token->Packet.TxData;\r |
8a67d61d | 44 | \r |
45 | if ((Token->Event == NULL) || (TxData == NULL) || (TxData->FragmentCount == 0)) {\r | |
46 | //\r | |
47 | // The token is invalid if the Event is NULL, or the TxData is NULL, or\r | |
48 | // the fragment count is zero.\r | |
49 | //\r | |
e48e37fc | 50 | DEBUG ((EFI_D_WARN, "MnpIsValidTxToken: Invalid Token.\n"));\r |
8a67d61d | 51 | return FALSE;\r |
52 | }\r | |
53 | \r | |
54 | if ((TxData->DestinationAddress != NULL) && (TxData->HeaderLength != 0)) {\r | |
55 | //\r | |
56 | // The token is invalid if the HeaderLength isn't zero while the DestinationAddress\r | |
57 | // is NULL (The destination address is already put into the packet).\r | |
58 | //\r | |
e48e37fc | 59 | DEBUG ((EFI_D_WARN, "MnpIsValidTxToken: DestinationAddress isn't NULL, HeaderLength must be 0.\n"));\r |
8a67d61d | 60 | return FALSE;\r |
61 | }\r | |
62 | \r | |
63 | TotalLength = 0;\r | |
64 | FragmentTable = TxData->FragmentTable;\r | |
65 | for (Index = 0; Index < TxData->FragmentCount; Index++) {\r | |
66 | \r | |
67 | if ((FragmentTable[Index].FragmentLength == 0) || (FragmentTable[Index].FragmentBuffer == NULL)) {\r | |
68 | //\r | |
69 | // The token is invalid if any FragmentLength is zero or any FragmentBuffer is NULL.\r | |
70 | //\r | |
e48e37fc | 71 | DEBUG ((EFI_D_WARN, "MnpIsValidTxToken: Invalid FragmentLength or FragmentBuffer.\n"));\r |
8a67d61d | 72 | return FALSE;\r |
73 | }\r | |
74 | \r | |
75 | TotalLength += FragmentTable[Index].FragmentLength;\r | |
76 | }\r | |
77 | \r | |
78 | if ((TxData->DestinationAddress == NULL) && (FragmentTable[0].FragmentLength < TxData->HeaderLength)) {\r | |
79 | //\r | |
80 | // Media header is split between fragments.\r | |
81 | //\r | |
82 | return FALSE;\r | |
83 | }\r | |
84 | \r | |
85 | if (TotalLength != (TxData->DataLength + TxData->HeaderLength)) {\r | |
86 | //\r | |
87 | // The length calculated from the fragment information doesn't equal to the\r | |
88 | // sum of the DataLength and the HeaderLength.\r | |
89 | //\r | |
e48e37fc | 90 | DEBUG ((EFI_D_WARN, "MnpIsValidTxData: Invalid Datalength compared with the sum of fragment length.\n"));\r |
8a67d61d | 91 | return FALSE;\r |
92 | }\r | |
93 | \r | |
94 | if (TxData->DataLength > MnpServiceData->Mtu) {\r | |
95 | //\r | |
96 | // The total length is larger than the MTU.\r | |
97 | //\r | |
e48e37fc | 98 | DEBUG ((EFI_D_WARN, "MnpIsValidTxData: TxData->DataLength exceeds Mtu.\n"));\r |
8a67d61d | 99 | return FALSE;\r |
100 | }\r | |
101 | \r | |
102 | return TRUE;\r | |
103 | }\r | |
104 | \r | |
105 | \r | |
106 | /**\r | |
107 | Build the packet to transmit from the TxData passed in.\r | |
108 | \r | |
6e4bac4d | 109 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
779ae357 | 110 | @param[in] TxData Pointer to the transmit data containing the information\r |
6e4bac4d | 111 | to build the packet.\r |
112 | @param[out] PktBuf Pointer to record the address of the packet.\r | |
779ae357 | 113 | @param[out] PktLen Pointer to a UINT32 variable used to record the packet's\r |
6e4bac4d | 114 | length.\r |
115 | \r | |
8a67d61d | 116 | **/\r |
117 | VOID\r | |
118 | MnpBuildTxPacket (\r | |
779ae357 | 119 | IN MNP_SERVICE_DATA *MnpServiceData,\r |
120 | IN EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData,\r | |
121 | OUT UINT8 **PktBuf,\r | |
122 | OUT UINT32 *PktLen\r | |
8a67d61d | 123 | )\r |
124 | {\r | |
125 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
126 | UINT8 *DstPos;\r | |
127 | UINT16 Index;\r | |
779ae357 | 128 | MNP_DEVICE_DATA *MnpDerviceData;\r |
8a67d61d | 129 | \r |
779ae357 | 130 | MnpDerviceData = MnpServiceData->MnpDeviceData;\r |
8a67d61d | 131 | if ((TxData->DestinationAddress == NULL) && (TxData->FragmentCount == 1)) {\r |
132 | //\r | |
133 | // Media header is in FragmentTable and there is only one fragment,\r | |
134 | // use fragment buffer directly.\r | |
135 | //\r | |
136 | *PktBuf = TxData->FragmentTable[0].FragmentBuffer;\r | |
137 | *PktLen = TxData->FragmentTable[0].FragmentLength;\r | |
138 | } else {\r | |
139 | //\r | |
140 | // Either media header isn't in FragmentTable or there is more than\r | |
141 | // one fragment, copy the data into the packet buffer. Reserve the\r | |
142 | // media header space if necessary.\r | |
143 | //\r | |
779ae357 | 144 | SnpMode = MnpDerviceData->Snp->Mode;\r |
145 | DstPos = MnpDerviceData->TxBuf;\r | |
8a67d61d | 146 | \r |
147 | *PktLen = 0;\r | |
148 | if (TxData->DestinationAddress != NULL) {\r | |
149 | //\r | |
150 | // If dest address is not NULL, move DstPos to reserve space for the\r | |
151 | // media header. Add the media header length to buflen.\r | |
152 | //\r | |
153 | DstPos += SnpMode->MediaHeaderSize;\r | |
154 | *PktLen += SnpMode->MediaHeaderSize;\r | |
155 | }\r | |
156 | \r | |
157 | for (Index = 0; Index < TxData->FragmentCount; Index++) {\r | |
158 | //\r | |
159 | // Copy the data.\r | |
160 | //\r | |
e48e37fc | 161 | CopyMem (\r |
8a67d61d | 162 | DstPos,\r |
163 | TxData->FragmentTable[Index].FragmentBuffer,\r | |
164 | TxData->FragmentTable[Index].FragmentLength\r | |
165 | );\r | |
166 | DstPos += TxData->FragmentTable[Index].FragmentLength;\r | |
167 | }\r | |
168 | \r | |
169 | //\r | |
170 | // Set the buffer pointer and the buffer length.\r | |
171 | //\r | |
779ae357 | 172 | *PktBuf = MnpDerviceData->TxBuf;\r |
8a67d61d | 173 | *PktLen += TxData->DataLength + TxData->HeaderLength;\r |
174 | }\r | |
175 | }\r | |
176 | \r | |
177 | \r | |
178 | /**\r | |
179 | Synchronously send out the packet.\r | |
180 | \r | |
6e4bac4d | 181 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
182 | @param[in] Packet Pointer to the pakcet buffer.\r | |
183 | @param[in] Length The length of the packet.\r | |
184 | @param[in, out] Token Pointer to the token the packet generated from.\r | |
8a67d61d | 185 | \r |
6e4bac4d | 186 | @retval EFI_SUCCESS The packet is sent out.\r |
187 | @retval EFI_TIMEOUT Time out occurs, the packet isn't sent.\r | |
188 | @retval EFI_DEVICE_ERROR An unexpected network error occurs.\r | |
8a67d61d | 189 | \r |
190 | **/\r | |
191 | EFI_STATUS\r | |
192 | MnpSyncSendPacket (\r | |
779ae357 | 193 | IN MNP_SERVICE_DATA *MnpServiceData,\r |
194 | IN UINT8 *Packet,\r | |
195 | IN UINT32 Length,\r | |
196 | IN OUT EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token\r | |
8a67d61d | 197 | )\r |
198 | {\r | |
199 | EFI_STATUS Status;\r | |
200 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
201 | EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData;\r | |
202 | UINT32 HeaderSize;\r | |
203 | UINT8 *TxBuf;\r | |
779ae357 | 204 | MNP_DEVICE_DATA *MnpDeviceData;\r |
205 | UINT16 ProtocolType;\r | |
8a67d61d | 206 | \r |
779ae357 | 207 | MnpDeviceData = MnpServiceData->MnpDeviceData;\r |
208 | Snp = MnpDeviceData->Snp;\r | |
209 | TxData = Token->Packet.TxData;\r | |
8a67d61d | 210 | \r |
779ae357 | 211 | HeaderSize = Snp->Mode->MediaHeaderSize - TxData->HeaderLength;\r |
8a67d61d | 212 | \r |
213 | //\r | |
214 | // Start the timeout event.\r | |
215 | //\r | |
216 | Status = gBS->SetTimer (\r | |
779ae357 | 217 | MnpDeviceData->TxTimeoutEvent,\r |
8a67d61d | 218 | TimerRelative,\r |
219 | MNP_TX_TIMEOUT_TIME\r | |
220 | );\r | |
221 | if (EFI_ERROR (Status)) {\r | |
8a67d61d | 222 | goto SIGNAL_TOKEN;\r |
223 | }\r | |
224 | \r | |
779ae357 | 225 | //\r |
226 | // Insert VLAN tag\r | |
227 | //\r | |
228 | MnpInsertVlanTag (MnpServiceData, TxData, &ProtocolType, &Packet, &Length);\r | |
229 | \r | |
8a67d61d | 230 | for (;;) {\r |
231 | //\r | |
232 | // Transmit the packet through SNP.\r | |
233 | //\r | |
234 | Status = Snp->Transmit (\r | |
235 | Snp,\r | |
236 | HeaderSize,\r | |
237 | Length,\r | |
238 | Packet,\r | |
239 | TxData->SourceAddress,\r | |
240 | TxData->DestinationAddress,\r | |
779ae357 | 241 | &ProtocolType\r |
8a67d61d | 242 | );\r |
243 | if ((Status != EFI_SUCCESS) && (Status != EFI_NOT_READY)) {\r | |
8a67d61d | 244 | Status = EFI_DEVICE_ERROR;\r |
245 | break;\r | |
246 | }\r | |
247 | \r | |
248 | //\r | |
249 | // If Status is EFI_SUCCESS, the packet is put in the transmit queue.\r | |
250 | // if Status is EFI_NOT_READY, the transmit engine of the network interface is busy.\r | |
251 | // Both need to sync SNP.\r | |
252 | //\r | |
253 | TxBuf = NULL;\r | |
254 | do {\r | |
255 | //\r | |
256 | // Get the recycled transmit buffer status.\r | |
257 | //\r | |
4eb65aff | 258 | Snp->GetStatus (Snp, NULL, (VOID **) &TxBuf);\r |
8a67d61d | 259 | \r |
779ae357 | 260 | if (!EFI_ERROR (gBS->CheckEvent (MnpDeviceData->TxTimeoutEvent))) {\r |
8a67d61d | 261 | Status = EFI_TIMEOUT;\r |
262 | break;\r | |
263 | }\r | |
264 | } while (TxBuf == NULL);\r | |
265 | \r | |
266 | if ((Status == EFI_SUCCESS) || (Status == EFI_TIMEOUT)) {\r | |
8a67d61d | 267 | break;\r |
268 | } else {\r | |
269 | //\r | |
270 | // Status is EFI_NOT_READY. Restart the timer event and call Snp->Transmit again.\r | |
271 | //\r | |
272 | gBS->SetTimer (\r | |
779ae357 | 273 | MnpDeviceData->TxTimeoutEvent,\r |
8a67d61d | 274 | TimerRelative,\r |
275 | MNP_TX_TIMEOUT_TIME\r | |
276 | );\r | |
277 | }\r | |
278 | }\r | |
279 | \r | |
280 | //\r | |
281 | // Cancel the timer event.\r | |
282 | //\r | |
779ae357 | 283 | gBS->SetTimer (MnpDeviceData->TxTimeoutEvent, TimerCancel, 0);\r |
8a67d61d | 284 | \r |
285 | SIGNAL_TOKEN:\r | |
286 | \r | |
287 | Token->Status = Status;\r | |
288 | gBS->SignalEvent (Token->Event);\r | |
289 | \r | |
36ee91ca | 290 | //\r |
291 | // Dispatch the DPC queued by the NotifyFunction of Token->Event.\r | |
292 | //\r | |
d8d26fb2 | 293 | DispatchDpc ();\r |
36ee91ca | 294 | \r |
8a67d61d | 295 | return EFI_SUCCESS;\r |
296 | }\r | |
297 | \r | |
298 | \r | |
299 | /**\r | |
300 | Try to deliver the received packet to the instance.\r | |
301 | \r | |
6e4bac4d | 302 | @param[in, out] Instance Pointer to the mnp instance context data.\r |
8a67d61d | 303 | \r |
304 | @retval EFI_SUCCESS The received packet is delivered, or there is no\r | |
305 | packet to deliver, or there is no available receive\r | |
306 | token.\r | |
307 | @retval EFI_OUT_OF_RESOURCES The deliver fails due to lack of memory resource.\r | |
308 | \r | |
309 | **/\r | |
310 | EFI_STATUS\r | |
311 | MnpInstanceDeliverPacket (\r | |
779ae357 | 312 | IN OUT MNP_INSTANCE_DATA *Instance\r |
8a67d61d | 313 | )\r |
314 | {\r | |
779ae357 | 315 | MNP_DEVICE_DATA *MnpDeviceData;\r |
8a67d61d | 316 | MNP_RXDATA_WRAP *RxDataWrap;\r |
317 | NET_BUF *DupNbuf;\r | |
318 | EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData;\r | |
319 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
320 | EFI_MANAGED_NETWORK_COMPLETION_TOKEN *RxToken;\r | |
321 | \r | |
779ae357 | 322 | MnpDeviceData = Instance->MnpServiceData->MnpDeviceData;\r |
323 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
8a67d61d | 324 | \r |
e48e37fc | 325 | if (NetMapIsEmpty (&Instance->RxTokenMap) || IsListEmpty (&Instance->RcvdPacketQueue)) {\r |
8a67d61d | 326 | //\r |
327 | // No pending received data or no available receive token, return.\r | |
328 | //\r | |
329 | return EFI_SUCCESS;\r | |
330 | }\r | |
331 | \r | |
332 | ASSERT (Instance->RcvdPacketQueueSize != 0);\r | |
333 | \r | |
334 | RxDataWrap = NET_LIST_HEAD (&Instance->RcvdPacketQueue, MNP_RXDATA_WRAP, WrapEntry);\r | |
335 | if (RxDataWrap->Nbuf->RefCnt > 2) {\r | |
336 | //\r | |
337 | // There are other instances share this Nbuf, duplicate to get a\r | |
338 | // copy to allow the instance to do R/W operations.\r | |
339 | //\r | |
779ae357 | 340 | DupNbuf = MnpAllocNbuf (MnpDeviceData);\r |
8a67d61d | 341 | if (DupNbuf == NULL) {\r |
e48e37fc | 342 | DEBUG ((EFI_D_WARN, "MnpDeliverPacket: Failed to allocate a free Nbuf.\n"));\r |
8a67d61d | 343 | \r |
344 | return EFI_OUT_OF_RESOURCES;\r | |
345 | }\r | |
346 | \r | |
347 | //\r | |
348 | // Duplicate the net buffer.\r | |
349 | //\r | |
350 | NetbufDuplicate (RxDataWrap->Nbuf, DupNbuf, 0);\r | |
779ae357 | 351 | MnpFreeNbuf (MnpDeviceData, RxDataWrap->Nbuf);\r |
8a67d61d | 352 | RxDataWrap->Nbuf = DupNbuf;\r |
353 | }\r | |
354 | \r | |
355 | //\r | |
356 | // All resources are OK, remove the packet from the queue.\r | |
357 | //\r | |
358 | NetListRemoveHead (&Instance->RcvdPacketQueue);\r | |
359 | Instance->RcvdPacketQueueSize--;\r | |
360 | \r | |
361 | RxData = &RxDataWrap->RxData;\r | |
779ae357 | 362 | SnpMode = MnpDeviceData->Snp->Mode;\r |
8a67d61d | 363 | \r |
364 | //\r | |
365 | // Set all the buffer pointers.\r | |
366 | //\r | |
367 | RxData->MediaHeader = NetbufGetByte (RxDataWrap->Nbuf, 0, NULL);\r | |
368 | RxData->DestinationAddress = RxData->MediaHeader;\r | |
369 | RxData->SourceAddress = (UINT8 *) RxData->MediaHeader + SnpMode->HwAddressSize;\r | |
370 | RxData->PacketData = (UINT8 *) RxData->MediaHeader + SnpMode->MediaHeaderSize;\r | |
371 | \r | |
372 | //\r | |
373 | // Insert this RxDataWrap into the delivered queue.\r | |
374 | //\r | |
e48e37fc | 375 | InsertTailList (&Instance->RxDeliveredPacketQueue, &RxDataWrap->WrapEntry);\r |
8a67d61d | 376 | \r |
377 | //\r | |
378 | // Get the receive token from the RxTokenMap.\r | |
379 | //\r | |
380 | RxToken = NetMapRemoveHead (&Instance->RxTokenMap, NULL);\r | |
381 | \r | |
382 | //\r | |
383 | // Signal this token's event.\r | |
384 | //\r | |
385 | RxToken->Packet.RxData = &RxDataWrap->RxData;\r | |
386 | RxToken->Status = EFI_SUCCESS;\r | |
387 | gBS->SignalEvent (RxToken->Event);\r | |
388 | \r | |
389 | return EFI_SUCCESS;\r | |
390 | }\r | |
391 | \r | |
392 | \r | |
393 | /**\r | |
394 | Deliver the received packet for the instances belonging to the MnpServiceData.\r | |
395 | \r | |
6e4bac4d | 396 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
8a67d61d | 397 | \r |
8a67d61d | 398 | **/\r |
8a67d61d | 399 | VOID\r |
400 | MnpDeliverPacket (\r | |
779ae357 | 401 | IN MNP_SERVICE_DATA *MnpServiceData\r |
8a67d61d | 402 | )\r |
403 | {\r | |
e48e37fc | 404 | LIST_ENTRY *Entry;\r |
8a67d61d | 405 | MNP_INSTANCE_DATA *Instance;\r |
406 | \r | |
407 | NET_CHECK_SIGNATURE (MnpServiceData, MNP_SERVICE_DATA_SIGNATURE);\r | |
408 | \r | |
409 | NET_LIST_FOR_EACH (Entry, &MnpServiceData->ChildrenList) {\r | |
410 | Instance = NET_LIST_USER_STRUCT (Entry, MNP_INSTANCE_DATA, InstEntry);\r | |
411 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
412 | \r | |
413 | //\r | |
414 | // Try to deliver packet for this instance.\r | |
415 | //\r | |
416 | MnpInstanceDeliverPacket (Instance);\r | |
417 | }\r | |
418 | }\r | |
419 | \r | |
420 | \r | |
421 | /**\r | |
422 | Recycle the RxData and other resources used to hold and deliver the received\r | |
423 | packet.\r | |
424 | \r | |
6e4bac4d | 425 | @param[in] Event The event this notify function registered to.\r |
426 | @param[in] Context Pointer to the context data registerd to the Event.\r | |
427 | \r | |
8a67d61d | 428 | **/\r |
429 | VOID\r | |
430 | EFIAPI\r | |
431 | MnpRecycleRxData (\r | |
779ae357 | 432 | IN EFI_EVENT Event,\r |
433 | IN VOID *Context\r | |
8a67d61d | 434 | )\r |
435 | {\r | |
779ae357 | 436 | MNP_RXDATA_WRAP *RxDataWrap;\r |
437 | MNP_DEVICE_DATA *MnpDeviceData;\r | |
8a67d61d | 438 | \r |
439 | ASSERT (Context != NULL);\r | |
440 | \r | |
441 | RxDataWrap = (MNP_RXDATA_WRAP *) Context;\r | |
442 | NET_CHECK_SIGNATURE (RxDataWrap->Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
443 | \r | |
444 | ASSERT (RxDataWrap->Nbuf != NULL);\r | |
445 | \r | |
779ae357 | 446 | MnpDeviceData = RxDataWrap->Instance->MnpServiceData->MnpDeviceData;\r |
447 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
8a67d61d | 448 | \r |
449 | //\r | |
450 | // Free this Nbuf.\r | |
451 | //\r | |
779ae357 | 452 | MnpFreeNbuf (MnpDeviceData, RxDataWrap->Nbuf);\r |
8a67d61d | 453 | RxDataWrap->Nbuf = NULL;\r |
454 | \r | |
455 | //\r | |
456 | // Close the recycle event.\r | |
457 | //\r | |
458 | gBS->CloseEvent (RxDataWrap->RxData.RecycleEvent);\r | |
459 | \r | |
460 | //\r | |
461 | // Remove this Wrap entry from the list.\r | |
462 | //\r | |
e48e37fc | 463 | RemoveEntryList (&RxDataWrap->WrapEntry);\r |
8a67d61d | 464 | \r |
766c7483 | 465 | FreePool (RxDataWrap);\r |
8a67d61d | 466 | }\r |
467 | \r | |
468 | \r | |
469 | /**\r | |
470 | Queue the received packet into instance's receive queue.\r | |
471 | \r | |
6e4bac4d | 472 | @param[in, out] Instance Pointer to the mnp instance context data.\r |
473 | @param[in, out] RxDataWrap Pointer to the Wrap structure containing the\r | |
474 | received data and other information.\r | |
8a67d61d | 475 | **/\r |
8a67d61d | 476 | VOID\r |
477 | MnpQueueRcvdPacket (\r | |
779ae357 | 478 | IN OUT MNP_INSTANCE_DATA *Instance,\r |
479 | IN OUT MNP_RXDATA_WRAP *RxDataWrap\r | |
8a67d61d | 480 | )\r |
481 | {\r | |
482 | MNP_RXDATA_WRAP *OldRxDataWrap;\r | |
483 | \r | |
484 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
485 | \r | |
486 | //\r | |
487 | // Check the queue size. If it exceeds the limit, drop one packet\r | |
488 | // from the head.\r | |
489 | //\r | |
490 | if (Instance->RcvdPacketQueueSize == MNP_MAX_RCVD_PACKET_QUE_SIZE) {\r | |
491 | \r | |
e48e37fc | 492 | DEBUG ((EFI_D_WARN, "MnpQueueRcvdPacket: Drop one packet bcz queue size limit reached.\n"));\r |
8a67d61d | 493 | \r |
494 | //\r | |
495 | // Get the oldest packet.\r | |
496 | //\r | |
497 | OldRxDataWrap = NET_LIST_HEAD (\r | |
498 | &Instance->RcvdPacketQueue,\r | |
499 | MNP_RXDATA_WRAP,\r | |
500 | WrapEntry\r | |
501 | );\r | |
502 | \r | |
503 | //\r | |
504 | // Recycle this OldRxDataWrap, this entry will be removed by the callee.\r | |
505 | //\r | |
506 | MnpRecycleRxData (NULL, (VOID *) OldRxDataWrap);\r | |
507 | Instance->RcvdPacketQueueSize--;\r | |
508 | }\r | |
509 | \r | |
510 | //\r | |
511 | // Update the timeout tick using the configured parameter.\r | |
512 | //\r | |
513 | RxDataWrap->TimeoutTick = Instance->ConfigData.ReceivedQueueTimeoutValue;\r | |
514 | \r | |
515 | //\r | |
516 | // Insert this Wrap into the instance queue.\r | |
517 | //\r | |
e48e37fc | 518 | InsertTailList (&Instance->RcvdPacketQueue, &RxDataWrap->WrapEntry);\r |
8a67d61d | 519 | Instance->RcvdPacketQueueSize++;\r |
520 | }\r | |
521 | \r | |
522 | \r | |
523 | /**\r | |
524 | Match the received packet with the instance receive filters.\r | |
525 | \r | |
3e8c18da | 526 | @param[in] Instance Pointer to the mnp instance context data.\r |
527 | @param[in] RxData Pointer to the EFI_MANAGED_NETWORK_RECEIVE_DATA.\r | |
528 | @param[in] GroupAddress Pointer to the GroupAddress, the GroupAddress is\r | |
8a67d61d | 529 | non-NULL and it contains the destination multicast\r |
530 | mac address of the received packet if the packet\r | |
531 | destinated to a multicast mac address.\r | |
3e8c18da | 532 | @param[in] PktAttr The received packets attribute.\r |
8a67d61d | 533 | \r |
534 | @return The received packet matches the instance's receive filters or not.\r | |
535 | \r | |
536 | **/\r | |
8a67d61d | 537 | BOOLEAN\r |
538 | MnpMatchPacket (\r | |
779ae357 | 539 | IN MNP_INSTANCE_DATA *Instance,\r |
540 | IN EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData,\r | |
541 | IN MNP_GROUP_ADDRESS *GroupAddress OPTIONAL,\r | |
542 | IN UINT8 PktAttr\r | |
8a67d61d | 543 | )\r |
544 | {\r | |
545 | EFI_MANAGED_NETWORK_CONFIG_DATA *ConfigData;\r | |
e48e37fc | 546 | LIST_ENTRY *Entry;\r |
8a67d61d | 547 | MNP_GROUP_CONTROL_BLOCK *GroupCtrlBlk;\r |
548 | \r | |
549 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
550 | \r | |
551 | ConfigData = &Instance->ConfigData;\r | |
552 | \r | |
8a67d61d | 553 | //\r |
554 | // Check the protocol type.\r | |
555 | //\r | |
556 | if ((ConfigData->ProtocolTypeFilter != 0) && (ConfigData->ProtocolTypeFilter != RxData->ProtocolType)) {\r | |
557 | return FALSE;\r | |
558 | }\r | |
559 | \r | |
36ee91ca | 560 | if (ConfigData->EnablePromiscuousReceive) {\r |
561 | //\r | |
562 | // Always match if this instance is configured to be promiscuous.\r | |
563 | //\r | |
564 | return TRUE;\r | |
565 | }\r | |
566 | \r | |
8a67d61d | 567 | //\r |
568 | // The protocol type is matched, check receive filter, include unicast and broadcast.\r | |
569 | //\r | |
570 | if ((Instance->ReceiveFilter & PktAttr) != 0) {\r | |
571 | return TRUE;\r | |
572 | }\r | |
573 | \r | |
574 | //\r | |
575 | // Check multicast addresses.\r | |
576 | //\r | |
577 | if (ConfigData->EnableMulticastReceive && RxData->MulticastFlag) {\r | |
578 | \r | |
579 | ASSERT (GroupAddress != NULL);\r | |
580 | \r | |
581 | NET_LIST_FOR_EACH (Entry, &Instance->GroupCtrlBlkList) {\r | |
582 | \r | |
583 | GroupCtrlBlk = NET_LIST_USER_STRUCT (Entry, MNP_GROUP_CONTROL_BLOCK, CtrlBlkEntry);\r | |
584 | if (GroupCtrlBlk->GroupAddress == GroupAddress) {\r | |
585 | //\r | |
586 | // The instance is configured to receiveing packets destinated to this\r | |
587 | // multicast address.\r | |
588 | //\r | |
589 | return TRUE;\r | |
590 | }\r | |
591 | }\r | |
592 | }\r | |
593 | \r | |
594 | //\r | |
595 | // No match.\r | |
596 | //\r | |
597 | return FALSE;\r | |
598 | }\r | |
599 | \r | |
600 | \r | |
601 | /**\r | |
602 | Analyse the received packets.\r | |
603 | \r | |
6e4bac4d | 604 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
605 | @param[in] Nbuf Pointer to the net buffer holding the received\r | |
606 | packet.\r | |
607 | @param[in, out] RxData Pointer to the buffer used to save the analysed\r | |
608 | result in EFI_MANAGED_NETWORK_RECEIVE_DATA.\r | |
609 | @param[out] GroupAddress Pointer to pointer to a MNP_GROUP_ADDRESS used to\r | |
610 | pass out the address of the multicast address the\r | |
611 | received packet destinated to.\r | |
612 | @param[out] PktAttr Pointer to the buffer used to save the analysed\r | |
613 | packet attribute.\r | |
8a67d61d | 614 | \r |
615 | **/\r | |
8a67d61d | 616 | VOID\r |
617 | MnpAnalysePacket (\r | |
779ae357 | 618 | IN MNP_SERVICE_DATA *MnpServiceData,\r |
619 | IN NET_BUF *Nbuf,\r | |
620 | IN OUT EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData,\r | |
621 | OUT MNP_GROUP_ADDRESS **GroupAddress,\r | |
622 | OUT UINT8 *PktAttr\r | |
8a67d61d | 623 | )\r |
624 | {\r | |
625 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
779ae357 | 626 | MNP_DEVICE_DATA *MnpDeviceData;\r |
8a67d61d | 627 | UINT8 *BufPtr;\r |
e48e37fc | 628 | LIST_ENTRY *Entry;\r |
8a67d61d | 629 | \r |
779ae357 | 630 | MnpDeviceData = MnpServiceData->MnpDeviceData;\r |
631 | SnpMode = MnpDeviceData->Snp->Mode;\r | |
8a67d61d | 632 | \r |
633 | //\r | |
634 | // Get the packet buffer.\r | |
635 | //\r | |
636 | BufPtr = NetbufGetByte (Nbuf, 0, NULL);\r | |
637 | ASSERT (BufPtr != NULL);\r | |
638 | \r | |
639 | //\r | |
640 | // Set the initial values.\r | |
641 | //\r | |
642 | RxData->BroadcastFlag = FALSE;\r | |
643 | RxData->MulticastFlag = FALSE;\r | |
644 | RxData->PromiscuousFlag = FALSE;\r | |
645 | *PktAttr = UNICAST_PACKET;\r | |
646 | \r | |
647 | if (!NET_MAC_EQUAL (&SnpMode->CurrentAddress, BufPtr, SnpMode->HwAddressSize)) {\r | |
648 | //\r | |
649 | // This packet isn't destinated to our current mac address, it't not unicast.\r | |
650 | //\r | |
651 | *PktAttr = 0;\r | |
652 | \r | |
653 | if (NET_MAC_EQUAL (&SnpMode->BroadcastAddress, BufPtr, SnpMode->HwAddressSize)) {\r | |
654 | //\r | |
655 | // It's broadcast.\r | |
656 | //\r | |
657 | RxData->BroadcastFlag = TRUE;\r | |
658 | *PktAttr = BROADCAST_PACKET;\r | |
659 | } else if ((*BufPtr & 0x01) == 0x1) {\r | |
660 | //\r | |
661 | // It's multicast, try to match the multicast filters.\r | |
662 | //\r | |
779ae357 | 663 | NET_LIST_FOR_EACH (Entry, &MnpDeviceData->GroupAddressList) {\r |
8a67d61d | 664 | \r |
665 | *GroupAddress = NET_LIST_USER_STRUCT (Entry, MNP_GROUP_ADDRESS, AddrEntry);\r | |
666 | if (NET_MAC_EQUAL (BufPtr, &((*GroupAddress)->Address), SnpMode->HwAddressSize)) {\r | |
667 | RxData->MulticastFlag = TRUE;\r | |
668 | break;\r | |
669 | }\r | |
670 | }\r | |
671 | \r | |
672 | if (!RxData->MulticastFlag) {\r | |
673 | //\r | |
674 | // No match, set GroupAddress to NULL. This multicast packet must\r | |
675 | // be the result of PROMISUCOUS or PROMISUCOUS_MULTICAST flag is on.\r | |
676 | //\r | |
677 | *GroupAddress = NULL;\r | |
678 | RxData->PromiscuousFlag = TRUE;\r | |
679 | \r | |
779ae357 | 680 | if (MnpDeviceData->PromiscuousCount == 0) {\r |
8a67d61d | 681 | //\r |
682 | // Skip the below code, there is no receiver of this packet.\r | |
683 | //\r | |
684 | return ;\r | |
685 | }\r | |
686 | }\r | |
687 | } else {\r | |
688 | RxData->PromiscuousFlag = TRUE;\r | |
689 | }\r | |
690 | }\r | |
691 | \r | |
e48e37fc | 692 | ZeroMem (&RxData->Timestamp, sizeof (EFI_TIME));\r |
8a67d61d | 693 | \r |
694 | //\r | |
695 | // Fill the common parts of RxData.\r | |
696 | //\r | |
697 | RxData->PacketLength = Nbuf->TotalSize;\r | |
698 | RxData->HeaderLength = SnpMode->MediaHeaderSize;\r | |
699 | RxData->AddressLength = SnpMode->HwAddressSize;\r | |
700 | RxData->DataLength = RxData->PacketLength - RxData->HeaderLength;\r | |
701 | RxData->ProtocolType = NTOHS (*(UINT16 *) (BufPtr + 2 * SnpMode->HwAddressSize));\r | |
702 | }\r | |
703 | \r | |
704 | \r | |
705 | /**\r | |
706 | Wrap the RxData.\r | |
707 | \r | |
6e4bac4d | 708 | @param[in] Instance Pointer to the mnp instance context data.\r |
709 | @param[in] RxData Pointer to the receive data to wrap.\r | |
8a67d61d | 710 | \r |
711 | @return Pointer to a MNP_RXDATA_WRAP which wraps the RxData.\r | |
712 | \r | |
713 | **/\r | |
8a67d61d | 714 | MNP_RXDATA_WRAP *\r |
715 | MnpWrapRxData (\r | |
779ae357 | 716 | IN MNP_INSTANCE_DATA *Instance,\r |
717 | IN EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData\r | |
8a67d61d | 718 | )\r |
719 | {\r | |
720 | EFI_STATUS Status;\r | |
721 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
722 | \r | |
723 | //\r | |
724 | // Allocate memory.\r | |
725 | //\r | |
e48e37fc | 726 | RxDataWrap = AllocatePool (sizeof (MNP_RXDATA_WRAP));\r |
8a67d61d | 727 | if (RxDataWrap == NULL) {\r |
e48e37fc | 728 | DEBUG ((EFI_D_ERROR, "MnpDispatchPacket: Failed to allocate a MNP_RXDATA_WRAP.\n"));\r |
8a67d61d | 729 | return NULL;\r |
730 | }\r | |
731 | \r | |
732 | RxDataWrap->Instance = Instance;\r | |
733 | \r | |
734 | //\r | |
735 | // Fill the RxData in RxDataWrap,\r | |
736 | //\r | |
687a2e5f | 737 | CopyMem (&RxDataWrap->RxData, RxData, sizeof (RxDataWrap->RxData));\r |
8a67d61d | 738 | \r |
739 | //\r | |
740 | // Create the recycle event.\r | |
741 | //\r | |
742 | Status = gBS->CreateEvent (\r | |
743 | EVT_NOTIFY_SIGNAL,\r | |
e48e37fc | 744 | TPL_NOTIFY,\r |
8a67d61d | 745 | MnpRecycleRxData,\r |
746 | RxDataWrap,\r | |
747 | &RxDataWrap->RxData.RecycleEvent\r | |
748 | );\r | |
749 | if (EFI_ERROR (Status)) {\r | |
e48e37fc | 750 | DEBUG ((EFI_D_ERROR, "MnpDispatchPacket: gBS->CreateEvent failed, %r.\n", Status));\r |
779ae357 | 751 | \r |
766c7483 | 752 | FreePool (RxDataWrap);\r |
8a67d61d | 753 | return NULL;\r |
754 | }\r | |
755 | \r | |
756 | return RxDataWrap;\r | |
757 | }\r | |
758 | \r | |
759 | \r | |
760 | /**\r | |
761 | Enqueue the received the packets to the instances belonging to the\r | |
762 | MnpServiceData.\r | |
763 | \r | |
6e4bac4d | 764 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
765 | @param[in] Nbuf Pointer to the net buffer representing the received\r | |
766 | packet.\r | |
8a67d61d | 767 | \r |
768 | **/\r | |
8a67d61d | 769 | VOID\r |
770 | MnpEnqueuePacket (\r | |
779ae357 | 771 | IN MNP_SERVICE_DATA *MnpServiceData,\r |
772 | IN NET_BUF *Nbuf\r | |
8a67d61d | 773 | )\r |
774 | {\r | |
e48e37fc | 775 | LIST_ENTRY *Entry;\r |
8a67d61d | 776 | MNP_INSTANCE_DATA *Instance;\r |
777 | EFI_MANAGED_NETWORK_RECEIVE_DATA RxData;\r | |
778 | UINT8 PktAttr;\r | |
779 | MNP_GROUP_ADDRESS *GroupAddress;\r | |
780 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
781 | \r | |
67a58d0f | 782 | \r |
783 | GroupAddress = NULL;\r | |
8a67d61d | 784 | //\r |
785 | // First, analyse the packet header.\r | |
786 | //\r | |
787 | MnpAnalysePacket (MnpServiceData, Nbuf, &RxData, &GroupAddress, &PktAttr);\r | |
788 | \r | |
779ae357 | 789 | if (RxData.PromiscuousFlag && (MnpServiceData->MnpDeviceData->PromiscuousCount == 0)) {\r |
8a67d61d | 790 | //\r |
791 | // No receivers, no more action need.\r | |
792 | //\r | |
793 | return ;\r | |
794 | }\r | |
795 | \r | |
796 | //\r | |
797 | // Iterate the children to find match.\r | |
798 | //\r | |
799 | NET_LIST_FOR_EACH (Entry, &MnpServiceData->ChildrenList) {\r | |
800 | \r | |
801 | Instance = NET_LIST_USER_STRUCT (Entry, MNP_INSTANCE_DATA, InstEntry);\r | |
802 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
803 | \r | |
804 | if (!Instance->Configured) {\r | |
805 | continue;\r | |
806 | }\r | |
807 | \r | |
808 | //\r | |
809 | // Check the packet against the instance receive filters.\r | |
810 | //\r | |
811 | if (MnpMatchPacket (Instance, &RxData, GroupAddress, PktAttr)) {\r | |
8a67d61d | 812 | //\r |
813 | // Wrap the RxData.\r | |
814 | //\r | |
687a2e5f | 815 | RxDataWrap = MnpWrapRxData (Instance, &RxData);\r |
8a67d61d | 816 | if (RxDataWrap == NULL) {\r |
817 | continue;\r | |
818 | }\r | |
819 | \r | |
820 | //\r | |
821 | // Associate RxDataWrap with Nbuf and increase the RefCnt.\r | |
822 | //\r | |
823 | RxDataWrap->Nbuf = Nbuf;\r | |
824 | NET_GET_REF (RxDataWrap->Nbuf);\r | |
825 | \r | |
826 | //\r | |
827 | // Queue the packet into the instance queue.\r | |
828 | //\r | |
829 | MnpQueueRcvdPacket (Instance, RxDataWrap);\r | |
830 | }\r | |
831 | }\r | |
832 | }\r | |
833 | \r | |
834 | \r | |
835 | /**\r | |
836 | Try to receive a packet and deliver it.\r | |
837 | \r | |
779ae357 | 838 | @param[in, out] MnpDeviceData Pointer to the mnp device context data.\r |
8a67d61d | 839 | \r |
840 | @retval EFI_SUCCESS add return value to function comment\r | |
841 | @retval EFI_NOT_STARTED The simple network protocol is not started.\r | |
842 | @retval EFI_NOT_READY No packet received.\r | |
843 | @retval EFI_DEVICE_ERROR An unexpected error occurs.\r | |
844 | \r | |
845 | **/\r | |
846 | EFI_STATUS\r | |
847 | MnpReceivePacket (\r | |
779ae357 | 848 | IN OUT MNP_DEVICE_DATA *MnpDeviceData\r |
8a67d61d | 849 | )\r |
850 | {\r | |
851 | EFI_STATUS Status;\r | |
852 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
853 | NET_BUF *Nbuf;\r | |
854 | UINT8 *BufPtr;\r | |
855 | UINTN BufLen;\r | |
856 | UINTN HeaderSize;\r | |
857 | UINT32 Trimmed;\r | |
779ae357 | 858 | MNP_SERVICE_DATA *MnpServiceData;\r |
859 | UINT16 VlanId;\r | |
860 | BOOLEAN IsVlanPacket;\r | |
8a67d61d | 861 | \r |
779ae357 | 862 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r |
8a67d61d | 863 | \r |
779ae357 | 864 | Snp = MnpDeviceData->Snp;\r |
8a67d61d | 865 | if (Snp->Mode->State != EfiSimpleNetworkInitialized) {\r |
866 | //\r | |
867 | // The simple network protocol is not started.\r | |
868 | //\r | |
869 | return EFI_NOT_STARTED;\r | |
870 | }\r | |
871 | \r | |
779ae357 | 872 | if (MnpDeviceData->RxNbufCache == NULL) {\r |
8a67d61d | 873 | //\r |
874 | // Try to get a new buffer as there may be buffers recycled.\r | |
875 | //\r | |
779ae357 | 876 | MnpDeviceData->RxNbufCache = MnpAllocNbuf (MnpDeviceData);\r |
8a67d61d | 877 | \r |
779ae357 | 878 | if (MnpDeviceData->RxNbufCache == NULL) {\r |
8a67d61d | 879 | //\r |
880 | // No availabe buffer in the buffer pool.\r | |
881 | //\r | |
882 | return EFI_DEVICE_ERROR;\r | |
883 | }\r | |
884 | \r | |
885 | NetbufAllocSpace (\r | |
779ae357 | 886 | MnpDeviceData->RxNbufCache,\r |
887 | MnpDeviceData->BufferLength,\r | |
8a67d61d | 888 | NET_BUF_TAIL\r |
889 | );\r | |
890 | }\r | |
891 | \r | |
779ae357 | 892 | Nbuf = MnpDeviceData->RxNbufCache;\r |
8a67d61d | 893 | BufLen = Nbuf->TotalSize;\r |
894 | BufPtr = NetbufGetByte (Nbuf, 0, NULL);\r | |
895 | ASSERT (BufPtr != NULL);\r | |
896 | \r | |
897 | //\r | |
898 | // Receive packet through Snp.\r | |
899 | //\r | |
900 | Status = Snp->Receive (Snp, &HeaderSize, &BufLen, BufPtr, NULL, NULL, NULL);\r | |
901 | if (EFI_ERROR (Status)) {\r | |
8a67d61d | 902 | DEBUG_CODE (\r |
903 | if (Status != EFI_NOT_READY) {\r | |
982a9eae | 904 | DEBUG ((EFI_D_WARN, "MnpReceivePacket: Snp->Receive() = %r.\n", Status));\r |
905 | }\r | |
8a67d61d | 906 | );\r |
907 | \r | |
908 | return Status;\r | |
909 | }\r | |
910 | \r | |
911 | //\r | |
912 | // Sanity check.\r | |
913 | //\r | |
914 | if ((HeaderSize != Snp->Mode->MediaHeaderSize) || (BufLen < HeaderSize)) {\r | |
e48e37fc | 915 | DEBUG (\r |
916 | (EFI_D_WARN,\r | |
917 | "MnpReceivePacket: Size error, HL:TL = %d:%d.\n",\r | |
8a67d61d | 918 | HeaderSize,\r |
919 | BufLen)\r | |
920 | );\r | |
921 | return EFI_DEVICE_ERROR;\r | |
922 | }\r | |
923 | \r | |
924 | Trimmed = 0;\r | |
925 | if (Nbuf->TotalSize != BufLen) {\r | |
926 | //\r | |
927 | // Trim the packet from tail.\r | |
928 | //\r | |
929 | Trimmed = NetbufTrim (Nbuf, Nbuf->TotalSize - (UINT32) BufLen, NET_BUF_TAIL);\r | |
930 | ASSERT (Nbuf->TotalSize == BufLen);\r | |
931 | }\r | |
932 | \r | |
779ae357 | 933 | VlanId = 0;\r |
934 | IsVlanPacket = MnpRemoveVlanTag (MnpDeviceData, Nbuf, &VlanId);\r | |
935 | \r | |
936 | MnpServiceData = MnpFindServiceData (MnpDeviceData, VlanId);\r | |
937 | if (MnpServiceData == NULL) {\r | |
938 | //\r | |
939 | // VLAN is not set for this tagged frame, ignore this packet\r | |
940 | //\r | |
941 | if (Trimmed > 0) {\r | |
942 | NetbufAllocSpace (Nbuf, Trimmed, NET_BUF_TAIL);\r | |
943 | }\r | |
944 | \r | |
945 | if (IsVlanPacket) {\r | |
946 | NetbufAllocSpace (Nbuf, NET_VLAN_TAG_LEN, NET_BUF_HEAD);\r | |
947 | }\r | |
948 | \r | |
949 | goto EXIT;\r | |
950 | }\r | |
951 | \r | |
8a67d61d | 952 | //\r |
953 | // Enqueue the packet to the matched instances.\r | |
954 | //\r | |
955 | MnpEnqueuePacket (MnpServiceData, Nbuf);\r | |
956 | \r | |
957 | if (Nbuf->RefCnt > 2) {\r | |
958 | //\r | |
959 | // RefCnt > 2 indicates there is at least one receiver of this packet.\r | |
960 | // Free the current RxNbufCache and allocate a new one.\r | |
961 | //\r | |
779ae357 | 962 | MnpFreeNbuf (MnpDeviceData, Nbuf);\r |
8a67d61d | 963 | \r |
779ae357 | 964 | Nbuf = MnpAllocNbuf (MnpDeviceData);\r |
965 | MnpDeviceData->RxNbufCache = Nbuf;\r | |
8a67d61d | 966 | if (Nbuf == NULL) {\r |
e48e37fc | 967 | DEBUG ((EFI_D_ERROR, "MnpReceivePacket: Alloc packet for receiving cache failed.\n"));\r |
8a67d61d | 968 | return EFI_DEVICE_ERROR;\r |
969 | }\r | |
970 | \r | |
779ae357 | 971 | NetbufAllocSpace (Nbuf, MnpDeviceData->BufferLength, NET_BUF_TAIL);\r |
8a67d61d | 972 | } else {\r |
973 | //\r | |
974 | // No receiver for this packet.\r | |
975 | //\r | |
772db4bb | 976 | if (Trimmed > 0) {\r |
977 | NetbufAllocSpace (Nbuf, Trimmed, NET_BUF_TAIL);\r | |
978 | }\r | |
779ae357 | 979 | if (IsVlanPacket) {\r |
980 | NetbufAllocSpace (Nbuf, NET_VLAN_TAG_LEN, NET_BUF_HEAD);\r | |
981 | }\r | |
772db4bb | 982 | \r |
8a67d61d | 983 | goto EXIT;\r |
984 | }\r | |
985 | //\r | |
986 | // Deliver the queued packets.\r | |
987 | //\r | |
988 | MnpDeliverPacket (MnpServiceData);\r | |
989 | \r | |
990 | EXIT:\r | |
991 | \r | |
779ae357 | 992 | ASSERT (Nbuf->TotalSize == MnpDeviceData->BufferLength);\r |
8a67d61d | 993 | \r |
994 | return Status;\r | |
995 | }\r | |
996 | \r | |
997 | \r | |
998 | /**\r | |
999 | Remove the received packets if timeout occurs.\r | |
1000 | \r | |
6e4bac4d | 1001 | @param[in] Event The event this notify function registered to.\r |
1002 | @param[in] Context Pointer to the context data registered to the\r | |
1003 | event.\r | |
779ae357 | 1004 | \r |
8a67d61d | 1005 | **/\r |
1006 | VOID\r | |
1007 | EFIAPI\r | |
1008 | MnpCheckPacketTimeout (\r | |
779ae357 | 1009 | IN EFI_EVENT Event,\r |
1010 | IN VOID *Context\r | |
8a67d61d | 1011 | )\r |
1012 | {\r | |
779ae357 | 1013 | MNP_DEVICE_DATA *MnpDeviceData;\r |
8a67d61d | 1014 | MNP_SERVICE_DATA *MnpServiceData;\r |
e48e37fc | 1015 | LIST_ENTRY *Entry;\r |
779ae357 | 1016 | LIST_ENTRY *ServiceEntry;\r |
e48e37fc | 1017 | LIST_ENTRY *RxEntry;\r |
1018 | LIST_ENTRY *NextEntry;\r | |
8a67d61d | 1019 | MNP_INSTANCE_DATA *Instance;\r |
1020 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
1021 | EFI_TPL OldTpl;\r | |
1022 | \r | |
779ae357 | 1023 | MnpDeviceData = (MNP_DEVICE_DATA *) Context;\r |
1024 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
8a67d61d | 1025 | \r |
779ae357 | 1026 | NET_LIST_FOR_EACH (ServiceEntry, &MnpDeviceData->ServiceList) {\r |
1027 | MnpServiceData = MNP_SERVICE_DATA_FROM_LINK (ServiceEntry);\r | |
8a67d61d | 1028 | \r |
779ae357 | 1029 | NET_LIST_FOR_EACH (Entry, &MnpServiceData->ChildrenList) {\r |
8a67d61d | 1030 | \r |
779ae357 | 1031 | Instance = NET_LIST_USER_STRUCT (Entry, MNP_INSTANCE_DATA, InstEntry);\r |
1032 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
8a67d61d | 1033 | \r |
779ae357 | 1034 | if (!Instance->Configured || (Instance->ConfigData.ReceivedQueueTimeoutValue == 0)) {\r |
1035 | //\r | |
1036 | // This instance is not configured or there is no receive time out,\r | |
1037 | // just skip to the next instance.\r | |
1038 | //\r | |
1039 | continue;\r | |
1040 | }\r | |
8a67d61d | 1041 | \r |
779ae357 | 1042 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r |
8a67d61d | 1043 | \r |
779ae357 | 1044 | NET_LIST_FOR_EACH_SAFE (RxEntry, NextEntry, &Instance->RcvdPacketQueue) {\r |
8a67d61d | 1045 | \r |
779ae357 | 1046 | RxDataWrap = NET_LIST_USER_STRUCT (RxEntry, MNP_RXDATA_WRAP, WrapEntry);\r |
8a67d61d | 1047 | \r |
8a67d61d | 1048 | //\r |
779ae357 | 1049 | // TimeoutTick unit is microsecond, MNP_TIMEOUT_CHECK_INTERVAL unit is 100ns.\r |
8a67d61d | 1050 | //\r |
779ae357 | 1051 | if (RxDataWrap->TimeoutTick >= (MNP_TIMEOUT_CHECK_INTERVAL / 10)) {\r |
1052 | RxDataWrap->TimeoutTick -= (MNP_TIMEOUT_CHECK_INTERVAL / 10);\r | |
1053 | } else {\r | |
1054 | //\r | |
1055 | // Drop the timeout packet.\r | |
1056 | //\r | |
1057 | DEBUG ((EFI_D_WARN, "MnpCheckPacketTimeout: Received packet timeout.\n"));\r | |
1058 | MnpRecycleRxData (NULL, RxDataWrap);\r | |
1059 | Instance->RcvdPacketQueueSize--;\r | |
1060 | }\r | |
8a67d61d | 1061 | }\r |
8a67d61d | 1062 | \r |
779ae357 | 1063 | gBS->RestoreTPL (OldTpl);\r |
1064 | }\r | |
8a67d61d | 1065 | }\r |
1066 | }\r | |
1067 | \r | |
8a67d61d | 1068 | /**\r |
1069 | Poll to receive the packets from Snp. This function is either called by upperlayer\r | |
1070 | protocols/applications or the system poll timer notify mechanism.\r | |
1071 | \r | |
6e4bac4d | 1072 | @param[in] Event The event this notify function registered to.\r |
1073 | @param[in, out] Context Pointer to the context data registered to the event.\r | |
8a67d61d | 1074 | \r |
8a67d61d | 1075 | **/\r |
1076 | VOID\r | |
1077 | EFIAPI\r | |
1078 | MnpSystemPoll (\r | |
779ae357 | 1079 | IN EFI_EVENT Event,\r |
1080 | IN OUT VOID *Context\r | |
8a67d61d | 1081 | )\r |
1082 | {\r | |
779ae357 | 1083 | MNP_DEVICE_DATA *MnpDeviceData;\r |
8a67d61d | 1084 | \r |
779ae357 | 1085 | MnpDeviceData = (MNP_DEVICE_DATA *) Context;\r |
1086 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
8a67d61d | 1087 | \r |
1088 | //\r | |
1089 | // Try to receive packets from Snp.\r | |
1090 | //\r | |
779ae357 | 1091 | MnpReceivePacket (MnpDeviceData);\r |
36ee91ca | 1092 | \r |
a4df47f1 | 1093 | //\r |
1094 | // Dispatch the DPC queued by the NotifyFunction of rx token's events.\r | |
1095 | //\r | |
d8d26fb2 | 1096 | DispatchDpc ();\r |
8a67d61d | 1097 | }\r |