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8a67d61d | 1 | /** @file\r |
3e8c18da | 2 | Implementation of Managed Network Protocol I/O functions.\r |
779ae357 | 3 | \r |
d1102dba | 4 | Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>\r |
9d510e61 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
8a67d61d | 6 | \r |
8a67d61d | 7 | **/\r |
8 | \r | |
19034421 | 9 | #include "MnpImpl.h"\r |
779ae357 | 10 | #include "MnpVlan.h"\r |
8a67d61d | 11 | \r |
12 | /**\r | |
13 | Validates the Mnp transmit token.\r | |
14 | \r | |
6e4bac4d | 15 | @param[in] Instance Pointer to the Mnp instance context data.\r |
16 | @param[in] Token Pointer to the transmit token to check.\r | |
8a67d61d | 17 | \r |
18 | @return The Token is valid or not.\r | |
19 | \r | |
20 | **/\r | |
21 | BOOLEAN\r | |
22 | MnpIsValidTxToken (\r | |
779ae357 | 23 | IN MNP_INSTANCE_DATA *Instance,\r |
24 | IN EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token\r | |
8a67d61d | 25 | )\r |
26 | {\r | |
27 | MNP_SERVICE_DATA *MnpServiceData;\r | |
8a67d61d | 28 | EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData;\r |
29 | UINT32 Index;\r | |
30 | UINT32 TotalLength;\r | |
31 | EFI_MANAGED_NETWORK_FRAGMENT_DATA *FragmentTable;\r | |
32 | \r | |
33 | MnpServiceData = Instance->MnpServiceData;\r | |
34 | NET_CHECK_SIGNATURE (MnpServiceData, MNP_SERVICE_DATA_SIGNATURE);\r | |
35 | \r | |
779ae357 | 36 | TxData = Token->Packet.TxData;\r |
8a67d61d | 37 | \r |
38 | if ((Token->Event == NULL) || (TxData == NULL) || (TxData->FragmentCount == 0)) {\r | |
39 | //\r | |
40 | // The token is invalid if the Event is NULL, or the TxData is NULL, or\r | |
41 | // the fragment count is zero.\r | |
42 | //\r | |
e48e37fc | 43 | DEBUG ((EFI_D_WARN, "MnpIsValidTxToken: Invalid Token.\n"));\r |
8a67d61d | 44 | return FALSE;\r |
45 | }\r | |
46 | \r | |
47 | if ((TxData->DestinationAddress != NULL) && (TxData->HeaderLength != 0)) {\r | |
48 | //\r | |
49 | // The token is invalid if the HeaderLength isn't zero while the DestinationAddress\r | |
50 | // is NULL (The destination address is already put into the packet).\r | |
51 | //\r | |
e48e37fc | 52 | DEBUG ((EFI_D_WARN, "MnpIsValidTxToken: DestinationAddress isn't NULL, HeaderLength must be 0.\n"));\r |
8a67d61d | 53 | return FALSE;\r |
54 | }\r | |
55 | \r | |
56 | TotalLength = 0;\r | |
57 | FragmentTable = TxData->FragmentTable;\r | |
58 | for (Index = 0; Index < TxData->FragmentCount; Index++) {\r | |
59 | \r | |
60 | if ((FragmentTable[Index].FragmentLength == 0) || (FragmentTable[Index].FragmentBuffer == NULL)) {\r | |
61 | //\r | |
62 | // The token is invalid if any FragmentLength is zero or any FragmentBuffer is NULL.\r | |
63 | //\r | |
e48e37fc | 64 | DEBUG ((EFI_D_WARN, "MnpIsValidTxToken: Invalid FragmentLength or FragmentBuffer.\n"));\r |
8a67d61d | 65 | return FALSE;\r |
66 | }\r | |
67 | \r | |
68 | TotalLength += FragmentTable[Index].FragmentLength;\r | |
69 | }\r | |
70 | \r | |
71 | if ((TxData->DestinationAddress == NULL) && (FragmentTable[0].FragmentLength < TxData->HeaderLength)) {\r | |
72 | //\r | |
73 | // Media header is split between fragments.\r | |
74 | //\r | |
75 | return FALSE;\r | |
76 | }\r | |
77 | \r | |
78 | if (TotalLength != (TxData->DataLength + TxData->HeaderLength)) {\r | |
79 | //\r | |
80 | // The length calculated from the fragment information doesn't equal to the\r | |
81 | // sum of the DataLength and the HeaderLength.\r | |
82 | //\r | |
e48e37fc | 83 | DEBUG ((EFI_D_WARN, "MnpIsValidTxData: Invalid Datalength compared with the sum of fragment length.\n"));\r |
8a67d61d | 84 | return FALSE;\r |
85 | }\r | |
86 | \r | |
87 | if (TxData->DataLength > MnpServiceData->Mtu) {\r | |
88 | //\r | |
89 | // The total length is larger than the MTU.\r | |
90 | //\r | |
e48e37fc | 91 | DEBUG ((EFI_D_WARN, "MnpIsValidTxData: TxData->DataLength exceeds Mtu.\n"));\r |
8a67d61d | 92 | return FALSE;\r |
93 | }\r | |
94 | \r | |
95 | return TRUE;\r | |
96 | }\r | |
97 | \r | |
8a67d61d | 98 | /**\r |
99 | Build the packet to transmit from the TxData passed in.\r | |
100 | \r | |
6e4bac4d | 101 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
779ae357 | 102 | @param[in] TxData Pointer to the transmit data containing the information\r |
6e4bac4d | 103 | to build the packet.\r |
104 | @param[out] PktBuf Pointer to record the address of the packet.\r | |
779ae357 | 105 | @param[out] PktLen Pointer to a UINT32 variable used to record the packet's\r |
6e4bac4d | 106 | length.\r |
107 | \r | |
05074499 FS |
108 | @retval EFI_SUCCESS TxPackage is built.\r |
109 | @retval EFI_OUT_OF_RESOURCES The deliver fails due to lack of memory resource.\r | |
110 | \r | |
8a67d61d | 111 | **/\r |
05074499 | 112 | EFI_STATUS\r |
8a67d61d | 113 | MnpBuildTxPacket (\r |
779ae357 | 114 | IN MNP_SERVICE_DATA *MnpServiceData,\r |
115 | IN EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData,\r | |
116 | OUT UINT8 **PktBuf,\r | |
117 | OUT UINT32 *PktLen\r | |
8a67d61d | 118 | )\r |
119 | {\r | |
120 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
121 | UINT8 *DstPos;\r | |
122 | UINT16 Index;\r | |
05074499 FS |
123 | MNP_DEVICE_DATA *MnpDeviceData;\r |
124 | UINT8 *TxBuf;\r | |
d1102dba | 125 | \r |
05074499 | 126 | MnpDeviceData = MnpServiceData->MnpDeviceData;\r |
d1102dba | 127 | \r |
05074499 FS |
128 | TxBuf = MnpAllocTxBuf (MnpDeviceData);\r |
129 | if (TxBuf == NULL) {\r | |
130 | return EFI_OUT_OF_RESOURCES;\r | |
131 | }\r | |
d1102dba | 132 | \r |
8ff272ee | 133 | //\r |
05074499 | 134 | // Reserve space for vlan tag if needed.\r |
8ff272ee | 135 | //\r |
05074499 FS |
136 | if (MnpServiceData->VlanId != 0) {\r |
137 | *PktBuf = TxBuf + NET_VLAN_TAG_LEN;\r | |
138 | } else {\r | |
139 | *PktBuf = TxBuf;\r | |
140 | }\r | |
d1102dba | 141 | \r |
8a67d61d | 142 | if ((TxData->DestinationAddress == NULL) && (TxData->FragmentCount == 1)) {\r |
bdebd2ce WJ |
143 | CopyMem (\r |
144 | *PktBuf,\r | |
145 | TxData->FragmentTable[0].FragmentBuffer,\r | |
146 | TxData->FragmentTable[0].FragmentLength\r | |
147 | );\r | |
d1102dba | 148 | \r |
8a67d61d | 149 | *PktLen = TxData->FragmentTable[0].FragmentLength;\r |
150 | } else {\r | |
151 | //\r | |
152 | // Either media header isn't in FragmentTable or there is more than\r | |
153 | // one fragment, copy the data into the packet buffer. Reserve the\r | |
154 | // media header space if necessary.\r | |
155 | //\r | |
d1102dba | 156 | SnpMode = MnpDeviceData->Snp->Mode;\r |
8ff272ee | 157 | DstPos = *PktBuf;\r |
8a67d61d | 158 | *PktLen = 0;\r |
159 | if (TxData->DestinationAddress != NULL) {\r | |
160 | //\r | |
161 | // If dest address is not NULL, move DstPos to reserve space for the\r | |
162 | // media header. Add the media header length to buflen.\r | |
163 | //\r | |
164 | DstPos += SnpMode->MediaHeaderSize;\r | |
165 | *PktLen += SnpMode->MediaHeaderSize;\r | |
166 | }\r | |
167 | \r | |
168 | for (Index = 0; Index < TxData->FragmentCount; Index++) {\r | |
169 | //\r | |
170 | // Copy the data.\r | |
171 | //\r | |
e48e37fc | 172 | CopyMem (\r |
8a67d61d | 173 | DstPos,\r |
174 | TxData->FragmentTable[Index].FragmentBuffer,\r | |
175 | TxData->FragmentTable[Index].FragmentLength\r | |
176 | );\r | |
177 | DstPos += TxData->FragmentTable[Index].FragmentLength;\r | |
178 | }\r | |
179 | \r | |
180 | //\r | |
8ff272ee | 181 | // Set the buffer length.\r |
8a67d61d | 182 | //\r |
8a67d61d | 183 | *PktLen += TxData->DataLength + TxData->HeaderLength;\r |
184 | }\r | |
05074499 FS |
185 | \r |
186 | return EFI_SUCCESS;\r | |
8a67d61d | 187 | }\r |
188 | \r | |
189 | \r | |
190 | /**\r | |
d1102dba | 191 | Synchronously send out the packet.\r |
05074499 FS |
192 | \r |
193 | This functon places the packet buffer to SNP driver's tansmit queue. The packet\r | |
194 | can be considered successfully sent out once SNP acccetp the packet, while the\r | |
195 | packet buffer recycle is deferred for better performance.\r | |
8a67d61d | 196 | \r |
6e4bac4d | 197 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
198 | @param[in] Packet Pointer to the pakcet buffer.\r | |
199 | @param[in] Length The length of the packet.\r | |
200 | @param[in, out] Token Pointer to the token the packet generated from.\r | |
8a67d61d | 201 | \r |
6e4bac4d | 202 | @retval EFI_SUCCESS The packet is sent out.\r |
203 | @retval EFI_TIMEOUT Time out occurs, the packet isn't sent.\r | |
204 | @retval EFI_DEVICE_ERROR An unexpected network error occurs.\r | |
8a67d61d | 205 | \r |
206 | **/\r | |
207 | EFI_STATUS\r | |
208 | MnpSyncSendPacket (\r | |
779ae357 | 209 | IN MNP_SERVICE_DATA *MnpServiceData,\r |
210 | IN UINT8 *Packet,\r | |
211 | IN UINT32 Length,\r | |
212 | IN OUT EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token\r | |
8a67d61d | 213 | )\r |
214 | {\r | |
215 | EFI_STATUS Status;\r | |
216 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
217 | EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData;\r | |
218 | UINT32 HeaderSize;\r | |
779ae357 | 219 | MNP_DEVICE_DATA *MnpDeviceData;\r |
220 | UINT16 ProtocolType;\r | |
8a67d61d | 221 | \r |
779ae357 | 222 | MnpDeviceData = MnpServiceData->MnpDeviceData;\r |
223 | Snp = MnpDeviceData->Snp;\r | |
224 | TxData = Token->Packet.TxData;\r | |
05074499 | 225 | Token->Status = EFI_SUCCESS;\r |
779ae357 | 226 | HeaderSize = Snp->Mode->MediaHeaderSize - TxData->HeaderLength;\r |
8a67d61d | 227 | \r |
dd29f3ed | 228 | //\r |
229 | // Check media status before transmit packet.\r | |
230 | // Note: media status will be updated by periodic timer MediaDetectTimer.\r | |
231 | //\r | |
412d1ed9 | 232 | if (Snp->Mode->MediaPresentSupported && !Snp->Mode->MediaPresent) {\r |
dd29f3ed | 233 | //\r |
234 | // Media not present, skip packet transmit and report EFI_NO_MEDIA\r | |
235 | //\r | |
412d1ed9 | 236 | DEBUG ((EFI_D_WARN, "MnpSyncSendPacket: No network cable detected.\n"));\r |
05074499 | 237 | Token->Status = EFI_NO_MEDIA;\r |
8a67d61d | 238 | goto SIGNAL_TOKEN;\r |
239 | }\r | |
240 | \r | |
d1102dba | 241 | \r |
bdebd2ce WJ |
242 | if (MnpServiceData->VlanId != 0) {\r |
243 | //\r | |
244 | // Insert VLAN tag\r | |
245 | //\r | |
246 | MnpInsertVlanTag (MnpServiceData, TxData, &ProtocolType, &Packet, &Length);\r | |
247 | } else {\r | |
248 | ProtocolType = TxData->ProtocolType;\r | |
249 | }\r | |
779ae357 | 250 | \r |
05074499 FS |
251 | //\r |
252 | // Transmit the packet through SNP.\r | |
253 | //\r | |
254 | Status = Snp->Transmit (\r | |
255 | Snp,\r | |
256 | HeaderSize,\r | |
257 | Length,\r | |
258 | Packet,\r | |
259 | TxData->SourceAddress,\r | |
260 | TxData->DestinationAddress,\r | |
261 | &ProtocolType\r | |
262 | );\r | |
263 | if (Status == EFI_NOT_READY) {\r | |
264 | Status = MnpRecycleTxBuf (MnpDeviceData);\r | |
265 | if (EFI_ERROR (Status)) {\r | |
266 | Token->Status = EFI_DEVICE_ERROR;\r | |
267 | goto SIGNAL_TOKEN;\r | |
268 | }\r | |
269 | \r | |
8a67d61d | 270 | Status = Snp->Transmit (\r |
271 | Snp,\r | |
272 | HeaderSize,\r | |
273 | Length,\r | |
274 | Packet,\r | |
275 | TxData->SourceAddress,\r | |
276 | TxData->DestinationAddress,\r | |
779ae357 | 277 | &ProtocolType\r |
d1102dba | 278 | );\r |
05074499 | 279 | }\r |
d1102dba | 280 | \r |
05074499 FS |
281 | if (EFI_ERROR (Status)) {\r |
282 | Token->Status = EFI_DEVICE_ERROR;\r | |
8a67d61d | 283 | }\r |
8a67d61d | 284 | \r |
285 | SIGNAL_TOKEN:\r | |
286 | \r | |
8a67d61d | 287 | gBS->SignalEvent (Token->Event);\r |
288 | \r | |
36ee91ca | 289 | //\r |
290 | // Dispatch the DPC queued by the NotifyFunction of Token->Event.\r | |
291 | //\r | |
d8d26fb2 | 292 | DispatchDpc ();\r |
36ee91ca | 293 | \r |
8a67d61d | 294 | return EFI_SUCCESS;\r |
295 | }\r | |
296 | \r | |
297 | \r | |
298 | /**\r | |
299 | Try to deliver the received packet to the instance.\r | |
300 | \r | |
6e4bac4d | 301 | @param[in, out] Instance Pointer to the mnp instance context data.\r |
8a67d61d | 302 | \r |
303 | @retval EFI_SUCCESS The received packet is delivered, or there is no\r | |
304 | packet to deliver, or there is no available receive\r | |
305 | token.\r | |
306 | @retval EFI_OUT_OF_RESOURCES The deliver fails due to lack of memory resource.\r | |
307 | \r | |
308 | **/\r | |
309 | EFI_STATUS\r | |
310 | MnpInstanceDeliverPacket (\r | |
779ae357 | 311 | IN OUT MNP_INSTANCE_DATA *Instance\r |
8a67d61d | 312 | )\r |
313 | {\r | |
779ae357 | 314 | MNP_DEVICE_DATA *MnpDeviceData;\r |
8a67d61d | 315 | MNP_RXDATA_WRAP *RxDataWrap;\r |
316 | NET_BUF *DupNbuf;\r | |
317 | EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData;\r | |
318 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
319 | EFI_MANAGED_NETWORK_COMPLETION_TOKEN *RxToken;\r | |
320 | \r | |
779ae357 | 321 | MnpDeviceData = Instance->MnpServiceData->MnpDeviceData;\r |
322 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
8a67d61d | 323 | \r |
e48e37fc | 324 | if (NetMapIsEmpty (&Instance->RxTokenMap) || IsListEmpty (&Instance->RcvdPacketQueue)) {\r |
8a67d61d | 325 | //\r |
326 | // No pending received data or no available receive token, return.\r | |
327 | //\r | |
328 | return EFI_SUCCESS;\r | |
329 | }\r | |
330 | \r | |
331 | ASSERT (Instance->RcvdPacketQueueSize != 0);\r | |
332 | \r | |
333 | RxDataWrap = NET_LIST_HEAD (&Instance->RcvdPacketQueue, MNP_RXDATA_WRAP, WrapEntry);\r | |
334 | if (RxDataWrap->Nbuf->RefCnt > 2) {\r | |
335 | //\r | |
336 | // There are other instances share this Nbuf, duplicate to get a\r | |
337 | // copy to allow the instance to do R/W operations.\r | |
338 | //\r | |
779ae357 | 339 | DupNbuf = MnpAllocNbuf (MnpDeviceData);\r |
8a67d61d | 340 | if (DupNbuf == NULL) {\r |
e48e37fc | 341 | DEBUG ((EFI_D_WARN, "MnpDeliverPacket: Failed to allocate a free Nbuf.\n"));\r |
8a67d61d | 342 | \r |
343 | return EFI_OUT_OF_RESOURCES;\r | |
344 | }\r | |
345 | \r | |
346 | //\r | |
347 | // Duplicate the net buffer.\r | |
348 | //\r | |
349 | NetbufDuplicate (RxDataWrap->Nbuf, DupNbuf, 0);\r | |
779ae357 | 350 | MnpFreeNbuf (MnpDeviceData, RxDataWrap->Nbuf);\r |
8a67d61d | 351 | RxDataWrap->Nbuf = DupNbuf;\r |
352 | }\r | |
353 | \r | |
354 | //\r | |
355 | // All resources are OK, remove the packet from the queue.\r | |
356 | //\r | |
357 | NetListRemoveHead (&Instance->RcvdPacketQueue);\r | |
358 | Instance->RcvdPacketQueueSize--;\r | |
359 | \r | |
360 | RxData = &RxDataWrap->RxData;\r | |
779ae357 | 361 | SnpMode = MnpDeviceData->Snp->Mode;\r |
8a67d61d | 362 | \r |
363 | //\r | |
364 | // Set all the buffer pointers.\r | |
365 | //\r | |
366 | RxData->MediaHeader = NetbufGetByte (RxDataWrap->Nbuf, 0, NULL);\r | |
367 | RxData->DestinationAddress = RxData->MediaHeader;\r | |
368 | RxData->SourceAddress = (UINT8 *) RxData->MediaHeader + SnpMode->HwAddressSize;\r | |
369 | RxData->PacketData = (UINT8 *) RxData->MediaHeader + SnpMode->MediaHeaderSize;\r | |
370 | \r | |
371 | //\r | |
372 | // Insert this RxDataWrap into the delivered queue.\r | |
373 | //\r | |
e48e37fc | 374 | InsertTailList (&Instance->RxDeliveredPacketQueue, &RxDataWrap->WrapEntry);\r |
8a67d61d | 375 | \r |
376 | //\r | |
377 | // Get the receive token from the RxTokenMap.\r | |
378 | //\r | |
379 | RxToken = NetMapRemoveHead (&Instance->RxTokenMap, NULL);\r | |
380 | \r | |
381 | //\r | |
382 | // Signal this token's event.\r | |
383 | //\r | |
384 | RxToken->Packet.RxData = &RxDataWrap->RxData;\r | |
385 | RxToken->Status = EFI_SUCCESS;\r | |
386 | gBS->SignalEvent (RxToken->Event);\r | |
387 | \r | |
388 | return EFI_SUCCESS;\r | |
389 | }\r | |
390 | \r | |
391 | \r | |
392 | /**\r | |
393 | Deliver the received packet for the instances belonging to the MnpServiceData.\r | |
394 | \r | |
6e4bac4d | 395 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
8a67d61d | 396 | \r |
8a67d61d | 397 | **/\r |
8a67d61d | 398 | VOID\r |
399 | MnpDeliverPacket (\r | |
779ae357 | 400 | IN MNP_SERVICE_DATA *MnpServiceData\r |
8a67d61d | 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 | |
6e4bac4d | 424 | @param[in] Event The event this notify function registered to.\r |
425 | @param[in] 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 | |
779ae357 | 431 | IN EFI_EVENT Event,\r |
432 | IN VOID *Context\r | |
8a67d61d | 433 | )\r |
434 | {\r | |
779ae357 | 435 | MNP_RXDATA_WRAP *RxDataWrap;\r |
436 | MNP_DEVICE_DATA *MnpDeviceData;\r | |
8a67d61d | 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 | |
779ae357 | 445 | MnpDeviceData = RxDataWrap->Instance->MnpServiceData->MnpDeviceData;\r |
446 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
8a67d61d | 447 | \r |
448 | //\r | |
449 | // Free this Nbuf.\r | |
450 | //\r | |
779ae357 | 451 | MnpFreeNbuf (MnpDeviceData, RxDataWrap->Nbuf);\r |
8a67d61d | 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 |
766c7483 | 464 | 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 | |
6e4bac4d | 471 | @param[in, out] Instance Pointer to the mnp instance context data.\r |
472 | @param[in, out] RxDataWrap Pointer to the Wrap structure containing the\r | |
473 | received data and other information.\r | |
8a67d61d | 474 | **/\r |
8a67d61d | 475 | VOID\r |
476 | MnpQueueRcvdPacket (\r | |
779ae357 | 477 | IN OUT MNP_INSTANCE_DATA *Instance,\r |
478 | IN OUT MNP_RXDATA_WRAP *RxDataWrap\r | |
8a67d61d | 479 | )\r |
480 | {\r | |
481 | MNP_RXDATA_WRAP *OldRxDataWrap;\r | |
482 | \r | |
483 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
484 | \r | |
485 | //\r | |
486 | // Check the queue size. If it exceeds the limit, drop one packet\r | |
487 | // from the head.\r | |
488 | //\r | |
489 | if (Instance->RcvdPacketQueueSize == MNP_MAX_RCVD_PACKET_QUE_SIZE) {\r | |
490 | \r | |
e48e37fc | 491 | DEBUG ((EFI_D_WARN, "MnpQueueRcvdPacket: Drop one packet bcz queue size limit reached.\n"));\r |
8a67d61d | 492 | \r |
493 | //\r | |
494 | // Get the oldest packet.\r | |
495 | //\r | |
496 | OldRxDataWrap = NET_LIST_HEAD (\r | |
497 | &Instance->RcvdPacketQueue,\r | |
498 | MNP_RXDATA_WRAP,\r | |
499 | WrapEntry\r | |
500 | );\r | |
501 | \r | |
502 | //\r | |
503 | // Recycle this OldRxDataWrap, this entry will be removed by the callee.\r | |
504 | //\r | |
505 | MnpRecycleRxData (NULL, (VOID *) OldRxDataWrap);\r | |
506 | Instance->RcvdPacketQueueSize--;\r | |
507 | }\r | |
508 | \r | |
509 | //\r | |
510 | // Update the timeout tick using the configured parameter.\r | |
511 | //\r | |
512 | RxDataWrap->TimeoutTick = Instance->ConfigData.ReceivedQueueTimeoutValue;\r | |
513 | \r | |
514 | //\r | |
515 | // Insert this Wrap into the instance queue.\r | |
516 | //\r | |
e48e37fc | 517 | InsertTailList (&Instance->RcvdPacketQueue, &RxDataWrap->WrapEntry);\r |
8a67d61d | 518 | Instance->RcvdPacketQueueSize++;\r |
519 | }\r | |
520 | \r | |
521 | \r | |
522 | /**\r | |
523 | Match the received packet with the instance receive filters.\r | |
524 | \r | |
3e8c18da | 525 | @param[in] Instance Pointer to the mnp instance context data.\r |
526 | @param[in] RxData Pointer to the EFI_MANAGED_NETWORK_RECEIVE_DATA.\r | |
527 | @param[in] GroupAddress Pointer to the GroupAddress, the GroupAddress is\r | |
8a67d61d | 528 | non-NULL and it contains the destination multicast\r |
529 | mac address of the received packet if the packet\r | |
530 | destinated to a multicast mac address.\r | |
3e8c18da | 531 | @param[in] PktAttr The received packets attribute.\r |
8a67d61d | 532 | \r |
533 | @return The received packet matches the instance's receive filters or not.\r | |
534 | \r | |
535 | **/\r | |
8a67d61d | 536 | BOOLEAN\r |
537 | MnpMatchPacket (\r | |
779ae357 | 538 | IN MNP_INSTANCE_DATA *Instance,\r |
539 | IN EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData,\r | |
540 | IN MNP_GROUP_ADDRESS *GroupAddress OPTIONAL,\r | |
541 | IN UINT8 PktAttr\r | |
8a67d61d | 542 | )\r |
543 | {\r | |
544 | EFI_MANAGED_NETWORK_CONFIG_DATA *ConfigData;\r | |
e48e37fc | 545 | LIST_ENTRY *Entry;\r |
8a67d61d | 546 | MNP_GROUP_CONTROL_BLOCK *GroupCtrlBlk;\r |
547 | \r | |
548 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
549 | \r | |
550 | ConfigData = &Instance->ConfigData;\r | |
551 | \r | |
8a67d61d | 552 | //\r |
553 | // Check the protocol type.\r | |
554 | //\r | |
555 | if ((ConfigData->ProtocolTypeFilter != 0) && (ConfigData->ProtocolTypeFilter != RxData->ProtocolType)) {\r | |
556 | return FALSE;\r | |
557 | }\r | |
558 | \r | |
36ee91ca | 559 | if (ConfigData->EnablePromiscuousReceive) {\r |
560 | //\r | |
561 | // Always match if this instance is configured to be promiscuous.\r | |
562 | //\r | |
563 | return TRUE;\r | |
564 | }\r | |
565 | \r | |
8a67d61d | 566 | //\r |
567 | // The protocol type is matched, check receive filter, include unicast and broadcast.\r | |
568 | //\r | |
569 | if ((Instance->ReceiveFilter & PktAttr) != 0) {\r | |
570 | return TRUE;\r | |
571 | }\r | |
572 | \r | |
573 | //\r | |
574 | // Check multicast addresses.\r | |
575 | //\r | |
576 | if (ConfigData->EnableMulticastReceive && RxData->MulticastFlag) {\r | |
577 | \r | |
578 | ASSERT (GroupAddress != NULL);\r | |
579 | \r | |
580 | NET_LIST_FOR_EACH (Entry, &Instance->GroupCtrlBlkList) {\r | |
581 | \r | |
582 | GroupCtrlBlk = NET_LIST_USER_STRUCT (Entry, MNP_GROUP_CONTROL_BLOCK, CtrlBlkEntry);\r | |
583 | if (GroupCtrlBlk->GroupAddress == GroupAddress) {\r | |
584 | //\r | |
585 | // The instance is configured to receiveing packets destinated to this\r | |
586 | // multicast address.\r | |
587 | //\r | |
588 | return TRUE;\r | |
589 | }\r | |
590 | }\r | |
591 | }\r | |
592 | \r | |
593 | //\r | |
594 | // No match.\r | |
595 | //\r | |
596 | return FALSE;\r | |
597 | }\r | |
598 | \r | |
599 | \r | |
600 | /**\r | |
601 | Analyse the received packets.\r | |
602 | \r | |
6e4bac4d | 603 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
604 | @param[in] Nbuf Pointer to the net buffer holding the received\r | |
605 | packet.\r | |
606 | @param[in, out] RxData Pointer to the buffer used to save the analysed\r | |
607 | result in EFI_MANAGED_NETWORK_RECEIVE_DATA.\r | |
608 | @param[out] GroupAddress Pointer to pointer to a MNP_GROUP_ADDRESS used to\r | |
609 | pass out the address of the multicast address the\r | |
610 | received packet destinated to.\r | |
611 | @param[out] PktAttr Pointer to the buffer used to save the analysed\r | |
612 | packet attribute.\r | |
8a67d61d | 613 | \r |
614 | **/\r | |
8a67d61d | 615 | VOID\r |
616 | MnpAnalysePacket (\r | |
779ae357 | 617 | IN MNP_SERVICE_DATA *MnpServiceData,\r |
618 | IN NET_BUF *Nbuf,\r | |
619 | IN OUT EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData,\r | |
620 | OUT MNP_GROUP_ADDRESS **GroupAddress,\r | |
621 | OUT UINT8 *PktAttr\r | |
8a67d61d | 622 | )\r |
623 | {\r | |
624 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
779ae357 | 625 | MNP_DEVICE_DATA *MnpDeviceData;\r |
8a67d61d | 626 | UINT8 *BufPtr;\r |
e48e37fc | 627 | LIST_ENTRY *Entry;\r |
8a67d61d | 628 | \r |
779ae357 | 629 | MnpDeviceData = MnpServiceData->MnpDeviceData;\r |
630 | SnpMode = MnpDeviceData->Snp->Mode;\r | |
8a67d61d | 631 | \r |
632 | //\r | |
633 | // Get the packet buffer.\r | |
634 | //\r | |
635 | BufPtr = NetbufGetByte (Nbuf, 0, NULL);\r | |
636 | ASSERT (BufPtr != NULL);\r | |
637 | \r | |
638 | //\r | |
639 | // Set the initial values.\r | |
640 | //\r | |
641 | RxData->BroadcastFlag = FALSE;\r | |
642 | RxData->MulticastFlag = FALSE;\r | |
643 | RxData->PromiscuousFlag = FALSE;\r | |
644 | *PktAttr = UNICAST_PACKET;\r | |
645 | \r | |
646 | if (!NET_MAC_EQUAL (&SnpMode->CurrentAddress, BufPtr, SnpMode->HwAddressSize)) {\r | |
647 | //\r | |
648 | // This packet isn't destinated to our current mac address, it't not unicast.\r | |
649 | //\r | |
650 | *PktAttr = 0;\r | |
651 | \r | |
652 | if (NET_MAC_EQUAL (&SnpMode->BroadcastAddress, BufPtr, SnpMode->HwAddressSize)) {\r | |
653 | //\r | |
654 | // It's broadcast.\r | |
655 | //\r | |
656 | RxData->BroadcastFlag = TRUE;\r | |
657 | *PktAttr = BROADCAST_PACKET;\r | |
658 | } else if ((*BufPtr & 0x01) == 0x1) {\r | |
659 | //\r | |
660 | // It's multicast, try to match the multicast filters.\r | |
661 | //\r | |
779ae357 | 662 | NET_LIST_FOR_EACH (Entry, &MnpDeviceData->GroupAddressList) {\r |
8a67d61d | 663 | \r |
664 | *GroupAddress = NET_LIST_USER_STRUCT (Entry, MNP_GROUP_ADDRESS, AddrEntry);\r | |
665 | if (NET_MAC_EQUAL (BufPtr, &((*GroupAddress)->Address), SnpMode->HwAddressSize)) {\r | |
666 | RxData->MulticastFlag = TRUE;\r | |
667 | break;\r | |
668 | }\r | |
669 | }\r | |
670 | \r | |
671 | if (!RxData->MulticastFlag) {\r | |
672 | //\r | |
673 | // No match, set GroupAddress to NULL. This multicast packet must\r | |
674 | // be the result of PROMISUCOUS or PROMISUCOUS_MULTICAST flag is on.\r | |
675 | //\r | |
676 | *GroupAddress = NULL;\r | |
677 | RxData->PromiscuousFlag = TRUE;\r | |
678 | \r | |
779ae357 | 679 | if (MnpDeviceData->PromiscuousCount == 0) {\r |
8a67d61d | 680 | //\r |
681 | // Skip the below code, there is no receiver of this packet.\r | |
682 | //\r | |
683 | return ;\r | |
684 | }\r | |
685 | }\r | |
686 | } else {\r | |
687 | RxData->PromiscuousFlag = TRUE;\r | |
688 | }\r | |
689 | }\r | |
690 | \r | |
e48e37fc | 691 | ZeroMem (&RxData->Timestamp, sizeof (EFI_TIME));\r |
8a67d61d | 692 | \r |
693 | //\r | |
694 | // Fill the common parts of RxData.\r | |
695 | //\r | |
696 | RxData->PacketLength = Nbuf->TotalSize;\r | |
697 | RxData->HeaderLength = SnpMode->MediaHeaderSize;\r | |
698 | RxData->AddressLength = SnpMode->HwAddressSize;\r | |
699 | RxData->DataLength = RxData->PacketLength - RxData->HeaderLength;\r | |
700 | RxData->ProtocolType = NTOHS (*(UINT16 *) (BufPtr + 2 * SnpMode->HwAddressSize));\r | |
701 | }\r | |
702 | \r | |
703 | \r | |
704 | /**\r | |
705 | Wrap the RxData.\r | |
706 | \r | |
6e4bac4d | 707 | @param[in] Instance Pointer to the mnp instance context data.\r |
708 | @param[in] RxData Pointer to the receive data to wrap.\r | |
8a67d61d | 709 | \r |
710 | @return Pointer to a MNP_RXDATA_WRAP which wraps the RxData.\r | |
711 | \r | |
712 | **/\r | |
8a67d61d | 713 | MNP_RXDATA_WRAP *\r |
714 | MnpWrapRxData (\r | |
779ae357 | 715 | IN MNP_INSTANCE_DATA *Instance,\r |
716 | IN EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData\r | |
8a67d61d | 717 | )\r |
718 | {\r | |
719 | EFI_STATUS Status;\r | |
720 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
721 | \r | |
722 | //\r | |
723 | // Allocate memory.\r | |
724 | //\r | |
e48e37fc | 725 | RxDataWrap = AllocatePool (sizeof (MNP_RXDATA_WRAP));\r |
8a67d61d | 726 | if (RxDataWrap == NULL) {\r |
e48e37fc | 727 | DEBUG ((EFI_D_ERROR, "MnpDispatchPacket: Failed to allocate a MNP_RXDATA_WRAP.\n"));\r |
8a67d61d | 728 | return NULL;\r |
729 | }\r | |
730 | \r | |
731 | RxDataWrap->Instance = Instance;\r | |
732 | \r | |
733 | //\r | |
734 | // Fill the RxData in RxDataWrap,\r | |
735 | //\r | |
687a2e5f | 736 | CopyMem (&RxDataWrap->RxData, RxData, sizeof (RxDataWrap->RxData));\r |
8a67d61d | 737 | \r |
738 | //\r | |
739 | // Create the recycle event.\r | |
740 | //\r | |
741 | Status = gBS->CreateEvent (\r | |
742 | EVT_NOTIFY_SIGNAL,\r | |
e48e37fc | 743 | TPL_NOTIFY,\r |
8a67d61d | 744 | MnpRecycleRxData,\r |
745 | RxDataWrap,\r | |
746 | &RxDataWrap->RxData.RecycleEvent\r | |
747 | );\r | |
748 | if (EFI_ERROR (Status)) {\r | |
e48e37fc | 749 | DEBUG ((EFI_D_ERROR, "MnpDispatchPacket: gBS->CreateEvent failed, %r.\n", Status));\r |
779ae357 | 750 | \r |
766c7483 | 751 | FreePool (RxDataWrap);\r |
8a67d61d | 752 | return NULL;\r |
753 | }\r | |
754 | \r | |
755 | return RxDataWrap;\r | |
756 | }\r | |
757 | \r | |
758 | \r | |
759 | /**\r | |
760 | Enqueue the received the packets to the instances belonging to the\r | |
761 | MnpServiceData.\r | |
762 | \r | |
6e4bac4d | 763 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
764 | @param[in] Nbuf Pointer to the net buffer representing the received\r | |
765 | packet.\r | |
8a67d61d | 766 | \r |
767 | **/\r | |
8a67d61d | 768 | VOID\r |
769 | MnpEnqueuePacket (\r | |
779ae357 | 770 | IN MNP_SERVICE_DATA *MnpServiceData,\r |
771 | IN NET_BUF *Nbuf\r | |
8a67d61d | 772 | )\r |
773 | {\r | |
e48e37fc | 774 | LIST_ENTRY *Entry;\r |
8a67d61d | 775 | MNP_INSTANCE_DATA *Instance;\r |
776 | EFI_MANAGED_NETWORK_RECEIVE_DATA RxData;\r | |
777 | UINT8 PktAttr;\r | |
778 | MNP_GROUP_ADDRESS *GroupAddress;\r | |
779 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
780 | \r | |
67a58d0f | 781 | \r |
782 | GroupAddress = NULL;\r | |
8a67d61d | 783 | //\r |
784 | // First, analyse the packet header.\r | |
785 | //\r | |
786 | MnpAnalysePacket (MnpServiceData, Nbuf, &RxData, &GroupAddress, &PktAttr);\r | |
787 | \r | |
779ae357 | 788 | if (RxData.PromiscuousFlag && (MnpServiceData->MnpDeviceData->PromiscuousCount == 0)) {\r |
8a67d61d | 789 | //\r |
790 | // No receivers, no more action need.\r | |
791 | //\r | |
792 | return ;\r | |
793 | }\r | |
794 | \r | |
795 | //\r | |
796 | // Iterate the children to find match.\r | |
797 | //\r | |
798 | NET_LIST_FOR_EACH (Entry, &MnpServiceData->ChildrenList) {\r | |
799 | \r | |
800 | Instance = NET_LIST_USER_STRUCT (Entry, MNP_INSTANCE_DATA, InstEntry);\r | |
801 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
802 | \r | |
803 | if (!Instance->Configured) {\r | |
804 | continue;\r | |
805 | }\r | |
806 | \r | |
807 | //\r | |
808 | // Check the packet against the instance receive filters.\r | |
809 | //\r | |
810 | if (MnpMatchPacket (Instance, &RxData, GroupAddress, PktAttr)) {\r | |
8a67d61d | 811 | //\r |
812 | // Wrap the RxData.\r | |
813 | //\r | |
687a2e5f | 814 | RxDataWrap = MnpWrapRxData (Instance, &RxData);\r |
8a67d61d | 815 | if (RxDataWrap == NULL) {\r |
816 | continue;\r | |
817 | }\r | |
818 | \r | |
819 | //\r | |
820 | // Associate RxDataWrap with Nbuf and increase the RefCnt.\r | |
821 | //\r | |
822 | RxDataWrap->Nbuf = Nbuf;\r | |
823 | NET_GET_REF (RxDataWrap->Nbuf);\r | |
824 | \r | |
825 | //\r | |
826 | // Queue the packet into the instance queue.\r | |
827 | //\r | |
828 | MnpQueueRcvdPacket (Instance, RxDataWrap);\r | |
829 | }\r | |
830 | }\r | |
831 | }\r | |
832 | \r | |
833 | \r | |
834 | /**\r | |
835 | Try to receive a packet and deliver it.\r | |
836 | \r | |
779ae357 | 837 | @param[in, out] MnpDeviceData Pointer to the mnp device context data.\r |
8a67d61d | 838 | \r |
839 | @retval EFI_SUCCESS add return value to function comment\r | |
840 | @retval EFI_NOT_STARTED The simple network protocol is not started.\r | |
841 | @retval EFI_NOT_READY No packet received.\r | |
842 | @retval EFI_DEVICE_ERROR An unexpected error occurs.\r | |
843 | \r | |
844 | **/\r | |
845 | EFI_STATUS\r | |
846 | MnpReceivePacket (\r | |
779ae357 | 847 | IN OUT MNP_DEVICE_DATA *MnpDeviceData\r |
8a67d61d | 848 | )\r |
849 | {\r | |
850 | EFI_STATUS Status;\r | |
851 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
852 | NET_BUF *Nbuf;\r | |
853 | UINT8 *BufPtr;\r | |
854 | UINTN BufLen;\r | |
855 | UINTN HeaderSize;\r | |
856 | UINT32 Trimmed;\r | |
779ae357 | 857 | MNP_SERVICE_DATA *MnpServiceData;\r |
858 | UINT16 VlanId;\r | |
859 | BOOLEAN IsVlanPacket;\r | |
8a67d61d | 860 | \r |
779ae357 | 861 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r |
8a67d61d | 862 | \r |
779ae357 | 863 | Snp = MnpDeviceData->Snp;\r |
8a67d61d | 864 | if (Snp->Mode->State != EfiSimpleNetworkInitialized) {\r |
865 | //\r | |
866 | // The simple network protocol is not started.\r | |
867 | //\r | |
868 | return EFI_NOT_STARTED;\r | |
869 | }\r | |
870 | \r | |
779ae357 | 871 | if (MnpDeviceData->RxNbufCache == NULL) {\r |
8a67d61d | 872 | //\r |
873 | // Try to get a new buffer as there may be buffers recycled.\r | |
874 | //\r | |
779ae357 | 875 | MnpDeviceData->RxNbufCache = MnpAllocNbuf (MnpDeviceData);\r |
8a67d61d | 876 | \r |
779ae357 | 877 | if (MnpDeviceData->RxNbufCache == NULL) {\r |
8a67d61d | 878 | //\r |
2048c585 | 879 | // No available buffer in the buffer pool.\r |
8a67d61d | 880 | //\r |
881 | return EFI_DEVICE_ERROR;\r | |
882 | }\r | |
883 | \r | |
884 | NetbufAllocSpace (\r | |
779ae357 | 885 | MnpDeviceData->RxNbufCache,\r |
886 | MnpDeviceData->BufferLength,\r | |
8a67d61d | 887 | NET_BUF_TAIL\r |
888 | );\r | |
889 | }\r | |
890 | \r | |
779ae357 | 891 | Nbuf = MnpDeviceData->RxNbufCache;\r |
8a67d61d | 892 | BufLen = Nbuf->TotalSize;\r |
893 | BufPtr = NetbufGetByte (Nbuf, 0, NULL);\r | |
894 | ASSERT (BufPtr != NULL);\r | |
895 | \r | |
896 | //\r | |
897 | // Receive packet through Snp.\r | |
898 | //\r | |
899 | Status = Snp->Receive (Snp, &HeaderSize, &BufLen, BufPtr, NULL, NULL, NULL);\r | |
900 | if (EFI_ERROR (Status)) {\r | |
8a67d61d | 901 | DEBUG_CODE (\r |
902 | if (Status != EFI_NOT_READY) {\r | |
982a9eae | 903 | DEBUG ((EFI_D_WARN, "MnpReceivePacket: Snp->Receive() = %r.\n", Status));\r |
904 | }\r | |
8a67d61d | 905 | );\r |
906 | \r | |
907 | return Status;\r | |
908 | }\r | |
909 | \r | |
910 | //\r | |
911 | // Sanity check.\r | |
912 | //\r | |
913 | if ((HeaderSize != Snp->Mode->MediaHeaderSize) || (BufLen < HeaderSize)) {\r | |
e48e37fc | 914 | DEBUG (\r |
915 | (EFI_D_WARN,\r | |
916 | "MnpReceivePacket: Size error, HL:TL = %d:%d.\n",\r | |
8a67d61d | 917 | HeaderSize,\r |
918 | BufLen)\r | |
919 | );\r | |
920 | return EFI_DEVICE_ERROR;\r | |
921 | }\r | |
922 | \r | |
923 | Trimmed = 0;\r | |
924 | if (Nbuf->TotalSize != BufLen) {\r | |
925 | //\r | |
926 | // Trim the packet from tail.\r | |
927 | //\r | |
928 | Trimmed = NetbufTrim (Nbuf, Nbuf->TotalSize - (UINT32) BufLen, NET_BUF_TAIL);\r | |
929 | ASSERT (Nbuf->TotalSize == BufLen);\r | |
930 | }\r | |
931 | \r | |
779ae357 | 932 | VlanId = 0;\r |
ef89996c | 933 | if (MnpDeviceData->NumberOfVlan != 0) {\r |
934 | //\r | |
935 | // VLAN is configured, remove the VLAN tag if any\r | |
936 | //\r | |
937 | IsVlanPacket = MnpRemoveVlanTag (MnpDeviceData, Nbuf, &VlanId);\r | |
938 | } else {\r | |
939 | IsVlanPacket = FALSE;\r | |
940 | }\r | |
779ae357 | 941 | \r |
942 | MnpServiceData = MnpFindServiceData (MnpDeviceData, VlanId);\r | |
943 | if (MnpServiceData == NULL) {\r | |
944 | //\r | |
945 | // VLAN is not set for this tagged frame, ignore this packet\r | |
946 | //\r | |
947 | if (Trimmed > 0) {\r | |
948 | NetbufAllocSpace (Nbuf, Trimmed, NET_BUF_TAIL);\r | |
949 | }\r | |
950 | \r | |
951 | if (IsVlanPacket) {\r | |
952 | NetbufAllocSpace (Nbuf, NET_VLAN_TAG_LEN, NET_BUF_HEAD);\r | |
953 | }\r | |
954 | \r | |
955 | goto EXIT;\r | |
956 | }\r | |
957 | \r | |
8a67d61d | 958 | //\r |
959 | // Enqueue the packet to the matched instances.\r | |
960 | //\r | |
961 | MnpEnqueuePacket (MnpServiceData, Nbuf);\r | |
962 | \r | |
963 | if (Nbuf->RefCnt > 2) {\r | |
964 | //\r | |
965 | // RefCnt > 2 indicates there is at least one receiver of this packet.\r | |
966 | // Free the current RxNbufCache and allocate a new one.\r | |
967 | //\r | |
779ae357 | 968 | MnpFreeNbuf (MnpDeviceData, Nbuf);\r |
8a67d61d | 969 | \r |
779ae357 | 970 | Nbuf = MnpAllocNbuf (MnpDeviceData);\r |
971 | MnpDeviceData->RxNbufCache = Nbuf;\r | |
8a67d61d | 972 | if (Nbuf == NULL) {\r |
e48e37fc | 973 | DEBUG ((EFI_D_ERROR, "MnpReceivePacket: Alloc packet for receiving cache failed.\n"));\r |
8a67d61d | 974 | return EFI_DEVICE_ERROR;\r |
975 | }\r | |
976 | \r | |
779ae357 | 977 | NetbufAllocSpace (Nbuf, MnpDeviceData->BufferLength, NET_BUF_TAIL);\r |
8a67d61d | 978 | } else {\r |
979 | //\r | |
980 | // No receiver for this packet.\r | |
981 | //\r | |
772db4bb | 982 | if (Trimmed > 0) {\r |
983 | NetbufAllocSpace (Nbuf, Trimmed, NET_BUF_TAIL);\r | |
984 | }\r | |
779ae357 | 985 | if (IsVlanPacket) {\r |
986 | NetbufAllocSpace (Nbuf, NET_VLAN_TAG_LEN, NET_BUF_HEAD);\r | |
987 | }\r | |
772db4bb | 988 | \r |
8a67d61d | 989 | goto EXIT;\r |
990 | }\r | |
991 | //\r | |
992 | // Deliver the queued packets.\r | |
993 | //\r | |
994 | MnpDeliverPacket (MnpServiceData);\r | |
995 | \r | |
996 | EXIT:\r | |
997 | \r | |
779ae357 | 998 | ASSERT (Nbuf->TotalSize == MnpDeviceData->BufferLength);\r |
8a67d61d | 999 | \r |
1000 | return Status;\r | |
1001 | }\r | |
1002 | \r | |
1003 | \r | |
1004 | /**\r | |
1005 | Remove the received packets if timeout occurs.\r | |
1006 | \r | |
dd29f3ed | 1007 | @param[in] Event The event this notify function registered to.\r |
1008 | @param[in] Context Pointer to the context data registered to the event.\r | |
779ae357 | 1009 | \r |
8a67d61d | 1010 | **/\r |
1011 | VOID\r | |
1012 | EFIAPI\r | |
1013 | MnpCheckPacketTimeout (\r | |
779ae357 | 1014 | IN EFI_EVENT Event,\r |
1015 | IN VOID *Context\r | |
8a67d61d | 1016 | )\r |
1017 | {\r | |
779ae357 | 1018 | MNP_DEVICE_DATA *MnpDeviceData;\r |
8a67d61d | 1019 | MNP_SERVICE_DATA *MnpServiceData;\r |
e48e37fc | 1020 | LIST_ENTRY *Entry;\r |
779ae357 | 1021 | LIST_ENTRY *ServiceEntry;\r |
e48e37fc | 1022 | LIST_ENTRY *RxEntry;\r |
1023 | LIST_ENTRY *NextEntry;\r | |
8a67d61d | 1024 | MNP_INSTANCE_DATA *Instance;\r |
1025 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
1026 | EFI_TPL OldTpl;\r | |
1027 | \r | |
779ae357 | 1028 | MnpDeviceData = (MNP_DEVICE_DATA *) Context;\r |
1029 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
8a67d61d | 1030 | \r |
779ae357 | 1031 | NET_LIST_FOR_EACH (ServiceEntry, &MnpDeviceData->ServiceList) {\r |
1032 | MnpServiceData = MNP_SERVICE_DATA_FROM_LINK (ServiceEntry);\r | |
8a67d61d | 1033 | \r |
779ae357 | 1034 | NET_LIST_FOR_EACH (Entry, &MnpServiceData->ChildrenList) {\r |
8a67d61d | 1035 | \r |
779ae357 | 1036 | Instance = NET_LIST_USER_STRUCT (Entry, MNP_INSTANCE_DATA, InstEntry);\r |
1037 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
8a67d61d | 1038 | \r |
779ae357 | 1039 | if (!Instance->Configured || (Instance->ConfigData.ReceivedQueueTimeoutValue == 0)) {\r |
1040 | //\r | |
1041 | // This instance is not configured or there is no receive time out,\r | |
1042 | // just skip to the next instance.\r | |
1043 | //\r | |
1044 | continue;\r | |
1045 | }\r | |
8a67d61d | 1046 | \r |
779ae357 | 1047 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r |
8a67d61d | 1048 | \r |
779ae357 | 1049 | NET_LIST_FOR_EACH_SAFE (RxEntry, NextEntry, &Instance->RcvdPacketQueue) {\r |
8a67d61d | 1050 | \r |
779ae357 | 1051 | RxDataWrap = NET_LIST_USER_STRUCT (RxEntry, MNP_RXDATA_WRAP, WrapEntry);\r |
8a67d61d | 1052 | \r |
8a67d61d | 1053 | //\r |
779ae357 | 1054 | // TimeoutTick unit is microsecond, MNP_TIMEOUT_CHECK_INTERVAL unit is 100ns.\r |
8a67d61d | 1055 | //\r |
779ae357 | 1056 | if (RxDataWrap->TimeoutTick >= (MNP_TIMEOUT_CHECK_INTERVAL / 10)) {\r |
1057 | RxDataWrap->TimeoutTick -= (MNP_TIMEOUT_CHECK_INTERVAL / 10);\r | |
1058 | } else {\r | |
1059 | //\r | |
1060 | // Drop the timeout packet.\r | |
1061 | //\r | |
1062 | DEBUG ((EFI_D_WARN, "MnpCheckPacketTimeout: Received packet timeout.\n"));\r | |
1063 | MnpRecycleRxData (NULL, RxDataWrap);\r | |
1064 | Instance->RcvdPacketQueueSize--;\r | |
1065 | }\r | |
8a67d61d | 1066 | }\r |
8a67d61d | 1067 | \r |
779ae357 | 1068 | gBS->RestoreTPL (OldTpl);\r |
1069 | }\r | |
8a67d61d | 1070 | }\r |
1071 | }\r | |
1072 | \r | |
dd29f3ed | 1073 | /**\r |
1074 | Poll to update MediaPresent field in SNP ModeData by Snp->GetStatus().\r | |
1075 | \r | |
1076 | @param[in] Event The event this notify function registered to.\r | |
1077 | @param[in] Context Pointer to the context data registered to the event.\r | |
1078 | \r | |
1079 | **/\r | |
1080 | VOID\r | |
1081 | EFIAPI\r | |
1082 | MnpCheckMediaStatus (\r | |
1083 | IN EFI_EVENT Event,\r | |
1084 | IN VOID *Context\r | |
1085 | )\r | |
1086 | {\r | |
1087 | MNP_DEVICE_DATA *MnpDeviceData;\r | |
1088 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
1089 | UINT32 InterruptStatus;\r | |
1090 | \r | |
1091 | MnpDeviceData = (MNP_DEVICE_DATA *) Context;\r | |
1092 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
1093 | \r | |
1094 | Snp = MnpDeviceData->Snp;\r | |
1095 | if (Snp->Mode->MediaPresentSupported) {\r | |
1096 | //\r | |
1097 | // Upon successful return of GetStatus(), the MediaPresent field of\r | |
1098 | // EFI_SIMPLE_NETWORK_MODE will be updated to reflect any change of media status\r | |
1099 | //\r | |
1100 | Snp->GetStatus (Snp, &InterruptStatus, NULL);\r | |
1101 | }\r | |
1102 | }\r | |
1103 | \r | |
8a67d61d | 1104 | /**\r |
1105 | Poll to receive the packets from Snp. This function is either called by upperlayer\r | |
1106 | protocols/applications or the system poll timer notify mechanism.\r | |
1107 | \r | |
dd29f3ed | 1108 | @param[in] Event The event this notify function registered to.\r |
1109 | @param[in] Context Pointer to the context data registered to the event.\r | |
8a67d61d | 1110 | \r |
8a67d61d | 1111 | **/\r |
1112 | VOID\r | |
1113 | EFIAPI\r | |
1114 | MnpSystemPoll (\r | |
dd29f3ed | 1115 | IN EFI_EVENT Event,\r |
1116 | IN VOID *Context\r | |
8a67d61d | 1117 | )\r |
1118 | {\r | |
779ae357 | 1119 | MNP_DEVICE_DATA *MnpDeviceData;\r |
8a67d61d | 1120 | \r |
779ae357 | 1121 | MnpDeviceData = (MNP_DEVICE_DATA *) Context;\r |
1122 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
8a67d61d | 1123 | \r |
1124 | //\r | |
1125 | // Try to receive packets from Snp.\r | |
1126 | //\r | |
779ae357 | 1127 | MnpReceivePacket (MnpDeviceData);\r |
36ee91ca | 1128 | \r |
a4df47f1 | 1129 | //\r |
1130 | // Dispatch the DPC queued by the NotifyFunction of rx token's events.\r | |
1131 | //\r | |
d8d26fb2 | 1132 | DispatchDpc ();\r |
8a67d61d | 1133 | }\r |