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8a67d61d | 1 | /** @file\r |
3e8c18da | 2 | Implementation of Managed Network Protocol I/O functions.\r |
779ae357 | 3 | \r |
05074499 | 4 | Copyright (c) 2005 - 2016, Intel Corporation. All rights reserved.<BR>\r |
e5eed7d3 | 5 | 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 | |
8a67d61d | 105 | /**\r |
106 | Build the packet to transmit from the TxData passed in.\r | |
107 | \r | |
6e4bac4d | 108 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
779ae357 | 109 | @param[in] TxData Pointer to the transmit data containing the information\r |
6e4bac4d | 110 | to build the packet.\r |
111 | @param[out] PktBuf Pointer to record the address of the packet.\r | |
779ae357 | 112 | @param[out] PktLen Pointer to a UINT32 variable used to record the packet's\r |
6e4bac4d | 113 | length.\r |
114 | \r | |
05074499 FS |
115 | @retval EFI_SUCCESS TxPackage is built.\r |
116 | @retval EFI_OUT_OF_RESOURCES The deliver fails due to lack of memory resource.\r | |
117 | \r | |
8a67d61d | 118 | **/\r |
05074499 | 119 | EFI_STATUS\r |
8a67d61d | 120 | MnpBuildTxPacket (\r |
779ae357 | 121 | IN MNP_SERVICE_DATA *MnpServiceData,\r |
122 | IN EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData,\r | |
123 | OUT UINT8 **PktBuf,\r | |
124 | OUT UINT32 *PktLen\r | |
8a67d61d | 125 | )\r |
126 | {\r | |
127 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
128 | UINT8 *DstPos;\r | |
129 | UINT16 Index;\r | |
05074499 FS |
130 | MNP_DEVICE_DATA *MnpDeviceData;\r |
131 | UINT8 *TxBuf;\r | |
132 | \r | |
133 | MnpDeviceData = MnpServiceData->MnpDeviceData;\r | |
134 | \r | |
135 | TxBuf = MnpAllocTxBuf (MnpDeviceData);\r | |
136 | if (TxBuf == NULL) {\r | |
137 | return EFI_OUT_OF_RESOURCES;\r | |
138 | }\r | |
139 | \r | |
8ff272ee | 140 | //\r |
05074499 | 141 | // Reserve space for vlan tag if needed.\r |
8ff272ee | 142 | //\r |
05074499 FS |
143 | if (MnpServiceData->VlanId != 0) {\r |
144 | *PktBuf = TxBuf + NET_VLAN_TAG_LEN;\r | |
145 | } else {\r | |
146 | *PktBuf = TxBuf;\r | |
147 | }\r | |
8ff272ee | 148 | \r |
8a67d61d | 149 | if ((TxData->DestinationAddress == NULL) && (TxData->FragmentCount == 1)) {\r |
bdebd2ce WJ |
150 | CopyMem (\r |
151 | *PktBuf,\r | |
152 | TxData->FragmentTable[0].FragmentBuffer,\r | |
153 | TxData->FragmentTable[0].FragmentLength\r | |
154 | );\r | |
155 | \r | |
8a67d61d | 156 | *PktLen = TxData->FragmentTable[0].FragmentLength;\r |
157 | } else {\r | |
158 | //\r | |
159 | // Either media header isn't in FragmentTable or there is more than\r | |
160 | // one fragment, copy the data into the packet buffer. Reserve the\r | |
161 | // media header space if necessary.\r | |
162 | //\r | |
05074499 | 163 | SnpMode = MnpDeviceData->Snp->Mode; \r |
8ff272ee | 164 | DstPos = *PktBuf;\r |
8a67d61d | 165 | *PktLen = 0;\r |
166 | if (TxData->DestinationAddress != NULL) {\r | |
167 | //\r | |
168 | // If dest address is not NULL, move DstPos to reserve space for the\r | |
169 | // media header. Add the media header length to buflen.\r | |
170 | //\r | |
171 | DstPos += SnpMode->MediaHeaderSize;\r | |
172 | *PktLen += SnpMode->MediaHeaderSize;\r | |
173 | }\r | |
174 | \r | |
175 | for (Index = 0; Index < TxData->FragmentCount; Index++) {\r | |
176 | //\r | |
177 | // Copy the data.\r | |
178 | //\r | |
e48e37fc | 179 | CopyMem (\r |
8a67d61d | 180 | DstPos,\r |
181 | TxData->FragmentTable[Index].FragmentBuffer,\r | |
182 | TxData->FragmentTable[Index].FragmentLength\r | |
183 | );\r | |
184 | DstPos += TxData->FragmentTable[Index].FragmentLength;\r | |
185 | }\r | |
186 | \r | |
187 | //\r | |
8ff272ee | 188 | // Set the buffer length.\r |
8a67d61d | 189 | //\r |
8a67d61d | 190 | *PktLen += TxData->DataLength + TxData->HeaderLength;\r |
191 | }\r | |
05074499 FS |
192 | \r |
193 | return EFI_SUCCESS;\r | |
8a67d61d | 194 | }\r |
195 | \r | |
196 | \r | |
197 | /**\r | |
05074499 FS |
198 | Synchronously send out the packet. \r |
199 | \r | |
200 | This functon places the packet buffer to SNP driver's tansmit queue. The packet\r | |
201 | can be considered successfully sent out once SNP acccetp the packet, while the\r | |
202 | packet buffer recycle is deferred for better performance.\r | |
8a67d61d | 203 | \r |
6e4bac4d | 204 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
205 | @param[in] Packet Pointer to the pakcet buffer.\r | |
206 | @param[in] Length The length of the packet.\r | |
207 | @param[in, out] Token Pointer to the token the packet generated from.\r | |
8a67d61d | 208 | \r |
6e4bac4d | 209 | @retval EFI_SUCCESS The packet is sent out.\r |
210 | @retval EFI_TIMEOUT Time out occurs, the packet isn't sent.\r | |
211 | @retval EFI_DEVICE_ERROR An unexpected network error occurs.\r | |
8a67d61d | 212 | \r |
213 | **/\r | |
214 | EFI_STATUS\r | |
215 | MnpSyncSendPacket (\r | |
779ae357 | 216 | IN MNP_SERVICE_DATA *MnpServiceData,\r |
217 | IN UINT8 *Packet,\r | |
218 | IN UINT32 Length,\r | |
219 | IN OUT EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token\r | |
8a67d61d | 220 | )\r |
221 | {\r | |
222 | EFI_STATUS Status;\r | |
223 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
224 | EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData;\r | |
225 | UINT32 HeaderSize;\r | |
779ae357 | 226 | MNP_DEVICE_DATA *MnpDeviceData;\r |
227 | UINT16 ProtocolType;\r | |
8a67d61d | 228 | \r |
779ae357 | 229 | MnpDeviceData = MnpServiceData->MnpDeviceData;\r |
230 | Snp = MnpDeviceData->Snp;\r | |
231 | TxData = Token->Packet.TxData;\r | |
05074499 | 232 | Token->Status = EFI_SUCCESS;\r |
779ae357 | 233 | HeaderSize = Snp->Mode->MediaHeaderSize - TxData->HeaderLength;\r |
8a67d61d | 234 | \r |
dd29f3ed | 235 | //\r |
236 | // Check media status before transmit packet.\r | |
237 | // Note: media status will be updated by periodic timer MediaDetectTimer.\r | |
238 | //\r | |
412d1ed9 | 239 | if (Snp->Mode->MediaPresentSupported && !Snp->Mode->MediaPresent) {\r |
dd29f3ed | 240 | //\r |
241 | // Media not present, skip packet transmit and report EFI_NO_MEDIA\r | |
242 | //\r | |
412d1ed9 | 243 | DEBUG ((EFI_D_WARN, "MnpSyncSendPacket: No network cable detected.\n"));\r |
05074499 | 244 | Token->Status = EFI_NO_MEDIA;\r |
8a67d61d | 245 | goto SIGNAL_TOKEN;\r |
246 | }\r | |
247 | \r | |
bdebd2ce WJ |
248 | \r |
249 | if (MnpServiceData->VlanId != 0) {\r | |
250 | //\r | |
251 | // Insert VLAN tag\r | |
252 | //\r | |
253 | MnpInsertVlanTag (MnpServiceData, TxData, &ProtocolType, &Packet, &Length);\r | |
254 | } else {\r | |
255 | ProtocolType = TxData->ProtocolType;\r | |
256 | }\r | |
779ae357 | 257 | \r |
05074499 FS |
258 | //\r |
259 | // Transmit the packet through SNP.\r | |
260 | //\r | |
261 | Status = Snp->Transmit (\r | |
262 | Snp,\r | |
263 | HeaderSize,\r | |
264 | Length,\r | |
265 | Packet,\r | |
266 | TxData->SourceAddress,\r | |
267 | TxData->DestinationAddress,\r | |
268 | &ProtocolType\r | |
269 | );\r | |
270 | if (Status == EFI_NOT_READY) {\r | |
271 | Status = MnpRecycleTxBuf (MnpDeviceData);\r | |
272 | if (EFI_ERROR (Status)) {\r | |
273 | Token->Status = EFI_DEVICE_ERROR;\r | |
274 | goto SIGNAL_TOKEN;\r | |
275 | }\r | |
276 | \r | |
8a67d61d | 277 | Status = Snp->Transmit (\r |
278 | Snp,\r | |
279 | HeaderSize,\r | |
280 | Length,\r | |
281 | Packet,\r | |
282 | TxData->SourceAddress,\r | |
283 | TxData->DestinationAddress,\r | |
779ae357 | 284 | &ProtocolType\r |
05074499 FS |
285 | ); \r |
286 | }\r | |
287 | \r | |
288 | if (EFI_ERROR (Status)) {\r | |
289 | Token->Status = EFI_DEVICE_ERROR;\r | |
8a67d61d | 290 | }\r |
8a67d61d | 291 | \r |
292 | SIGNAL_TOKEN:\r | |
293 | \r | |
8a67d61d | 294 | gBS->SignalEvent (Token->Event);\r |
295 | \r | |
36ee91ca | 296 | //\r |
297 | // Dispatch the DPC queued by the NotifyFunction of Token->Event.\r | |
298 | //\r | |
d8d26fb2 | 299 | DispatchDpc ();\r |
36ee91ca | 300 | \r |
8a67d61d | 301 | return EFI_SUCCESS;\r |
302 | }\r | |
303 | \r | |
304 | \r | |
305 | /**\r | |
306 | Try to deliver the received packet to the instance.\r | |
307 | \r | |
6e4bac4d | 308 | @param[in, out] Instance Pointer to the mnp instance context data.\r |
8a67d61d | 309 | \r |
310 | @retval EFI_SUCCESS The received packet is delivered, or there is no\r | |
311 | packet to deliver, or there is no available receive\r | |
312 | token.\r | |
313 | @retval EFI_OUT_OF_RESOURCES The deliver fails due to lack of memory resource.\r | |
314 | \r | |
315 | **/\r | |
316 | EFI_STATUS\r | |
317 | MnpInstanceDeliverPacket (\r | |
779ae357 | 318 | IN OUT MNP_INSTANCE_DATA *Instance\r |
8a67d61d | 319 | )\r |
320 | {\r | |
779ae357 | 321 | MNP_DEVICE_DATA *MnpDeviceData;\r |
8a67d61d | 322 | MNP_RXDATA_WRAP *RxDataWrap;\r |
323 | NET_BUF *DupNbuf;\r | |
324 | EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData;\r | |
325 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
326 | EFI_MANAGED_NETWORK_COMPLETION_TOKEN *RxToken;\r | |
327 | \r | |
779ae357 | 328 | MnpDeviceData = Instance->MnpServiceData->MnpDeviceData;\r |
329 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
8a67d61d | 330 | \r |
e48e37fc | 331 | if (NetMapIsEmpty (&Instance->RxTokenMap) || IsListEmpty (&Instance->RcvdPacketQueue)) {\r |
8a67d61d | 332 | //\r |
333 | // No pending received data or no available receive token, return.\r | |
334 | //\r | |
335 | return EFI_SUCCESS;\r | |
336 | }\r | |
337 | \r | |
338 | ASSERT (Instance->RcvdPacketQueueSize != 0);\r | |
339 | \r | |
340 | RxDataWrap = NET_LIST_HEAD (&Instance->RcvdPacketQueue, MNP_RXDATA_WRAP, WrapEntry);\r | |
341 | if (RxDataWrap->Nbuf->RefCnt > 2) {\r | |
342 | //\r | |
343 | // There are other instances share this Nbuf, duplicate to get a\r | |
344 | // copy to allow the instance to do R/W operations.\r | |
345 | //\r | |
779ae357 | 346 | DupNbuf = MnpAllocNbuf (MnpDeviceData);\r |
8a67d61d | 347 | if (DupNbuf == NULL) {\r |
e48e37fc | 348 | DEBUG ((EFI_D_WARN, "MnpDeliverPacket: Failed to allocate a free Nbuf.\n"));\r |
8a67d61d | 349 | \r |
350 | return EFI_OUT_OF_RESOURCES;\r | |
351 | }\r | |
352 | \r | |
353 | //\r | |
354 | // Duplicate the net buffer.\r | |
355 | //\r | |
356 | NetbufDuplicate (RxDataWrap->Nbuf, DupNbuf, 0);\r | |
779ae357 | 357 | MnpFreeNbuf (MnpDeviceData, RxDataWrap->Nbuf);\r |
8a67d61d | 358 | RxDataWrap->Nbuf = DupNbuf;\r |
359 | }\r | |
360 | \r | |
361 | //\r | |
362 | // All resources are OK, remove the packet from the queue.\r | |
363 | //\r | |
364 | NetListRemoveHead (&Instance->RcvdPacketQueue);\r | |
365 | Instance->RcvdPacketQueueSize--;\r | |
366 | \r | |
367 | RxData = &RxDataWrap->RxData;\r | |
779ae357 | 368 | SnpMode = MnpDeviceData->Snp->Mode;\r |
8a67d61d | 369 | \r |
370 | //\r | |
371 | // Set all the buffer pointers.\r | |
372 | //\r | |
373 | RxData->MediaHeader = NetbufGetByte (RxDataWrap->Nbuf, 0, NULL);\r | |
374 | RxData->DestinationAddress = RxData->MediaHeader;\r | |
375 | RxData->SourceAddress = (UINT8 *) RxData->MediaHeader + SnpMode->HwAddressSize;\r | |
376 | RxData->PacketData = (UINT8 *) RxData->MediaHeader + SnpMode->MediaHeaderSize;\r | |
377 | \r | |
378 | //\r | |
379 | // Insert this RxDataWrap into the delivered queue.\r | |
380 | //\r | |
e48e37fc | 381 | InsertTailList (&Instance->RxDeliveredPacketQueue, &RxDataWrap->WrapEntry);\r |
8a67d61d | 382 | \r |
383 | //\r | |
384 | // Get the receive token from the RxTokenMap.\r | |
385 | //\r | |
386 | RxToken = NetMapRemoveHead (&Instance->RxTokenMap, NULL);\r | |
387 | \r | |
388 | //\r | |
389 | // Signal this token's event.\r | |
390 | //\r | |
391 | RxToken->Packet.RxData = &RxDataWrap->RxData;\r | |
392 | RxToken->Status = EFI_SUCCESS;\r | |
393 | gBS->SignalEvent (RxToken->Event);\r | |
394 | \r | |
395 | return EFI_SUCCESS;\r | |
396 | }\r | |
397 | \r | |
398 | \r | |
399 | /**\r | |
400 | Deliver the received packet for the instances belonging to the MnpServiceData.\r | |
401 | \r | |
6e4bac4d | 402 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
8a67d61d | 403 | \r |
8a67d61d | 404 | **/\r |
8a67d61d | 405 | VOID\r |
406 | MnpDeliverPacket (\r | |
779ae357 | 407 | IN MNP_SERVICE_DATA *MnpServiceData\r |
8a67d61d | 408 | )\r |
409 | {\r | |
e48e37fc | 410 | LIST_ENTRY *Entry;\r |
8a67d61d | 411 | MNP_INSTANCE_DATA *Instance;\r |
412 | \r | |
413 | NET_CHECK_SIGNATURE (MnpServiceData, MNP_SERVICE_DATA_SIGNATURE);\r | |
414 | \r | |
415 | NET_LIST_FOR_EACH (Entry, &MnpServiceData->ChildrenList) {\r | |
416 | Instance = NET_LIST_USER_STRUCT (Entry, MNP_INSTANCE_DATA, InstEntry);\r | |
417 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
418 | \r | |
419 | //\r | |
420 | // Try to deliver packet for this instance.\r | |
421 | //\r | |
422 | MnpInstanceDeliverPacket (Instance);\r | |
423 | }\r | |
424 | }\r | |
425 | \r | |
426 | \r | |
427 | /**\r | |
428 | Recycle the RxData and other resources used to hold and deliver the received\r | |
429 | packet.\r | |
430 | \r | |
6e4bac4d | 431 | @param[in] Event The event this notify function registered to.\r |
432 | @param[in] Context Pointer to the context data registerd to the Event.\r | |
433 | \r | |
8a67d61d | 434 | **/\r |
435 | VOID\r | |
436 | EFIAPI\r | |
437 | MnpRecycleRxData (\r | |
779ae357 | 438 | IN EFI_EVENT Event,\r |
439 | IN VOID *Context\r | |
8a67d61d | 440 | )\r |
441 | {\r | |
779ae357 | 442 | MNP_RXDATA_WRAP *RxDataWrap;\r |
443 | MNP_DEVICE_DATA *MnpDeviceData;\r | |
8a67d61d | 444 | \r |
445 | ASSERT (Context != NULL);\r | |
446 | \r | |
447 | RxDataWrap = (MNP_RXDATA_WRAP *) Context;\r | |
448 | NET_CHECK_SIGNATURE (RxDataWrap->Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
449 | \r | |
450 | ASSERT (RxDataWrap->Nbuf != NULL);\r | |
451 | \r | |
779ae357 | 452 | MnpDeviceData = RxDataWrap->Instance->MnpServiceData->MnpDeviceData;\r |
453 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
8a67d61d | 454 | \r |
455 | //\r | |
456 | // Free this Nbuf.\r | |
457 | //\r | |
779ae357 | 458 | MnpFreeNbuf (MnpDeviceData, RxDataWrap->Nbuf);\r |
8a67d61d | 459 | RxDataWrap->Nbuf = NULL;\r |
460 | \r | |
461 | //\r | |
462 | // Close the recycle event.\r | |
463 | //\r | |
464 | gBS->CloseEvent (RxDataWrap->RxData.RecycleEvent);\r | |
465 | \r | |
466 | //\r | |
467 | // Remove this Wrap entry from the list.\r | |
468 | //\r | |
e48e37fc | 469 | RemoveEntryList (&RxDataWrap->WrapEntry);\r |
8a67d61d | 470 | \r |
766c7483 | 471 | FreePool (RxDataWrap);\r |
8a67d61d | 472 | }\r |
473 | \r | |
474 | \r | |
475 | /**\r | |
476 | Queue the received packet into instance's receive queue.\r | |
477 | \r | |
6e4bac4d | 478 | @param[in, out] Instance Pointer to the mnp instance context data.\r |
479 | @param[in, out] RxDataWrap Pointer to the Wrap structure containing the\r | |
480 | received data and other information.\r | |
8a67d61d | 481 | **/\r |
8a67d61d | 482 | VOID\r |
483 | MnpQueueRcvdPacket (\r | |
779ae357 | 484 | IN OUT MNP_INSTANCE_DATA *Instance,\r |
485 | IN OUT MNP_RXDATA_WRAP *RxDataWrap\r | |
8a67d61d | 486 | )\r |
487 | {\r | |
488 | MNP_RXDATA_WRAP *OldRxDataWrap;\r | |
489 | \r | |
490 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
491 | \r | |
492 | //\r | |
493 | // Check the queue size. If it exceeds the limit, drop one packet\r | |
494 | // from the head.\r | |
495 | //\r | |
496 | if (Instance->RcvdPacketQueueSize == MNP_MAX_RCVD_PACKET_QUE_SIZE) {\r | |
497 | \r | |
e48e37fc | 498 | DEBUG ((EFI_D_WARN, "MnpQueueRcvdPacket: Drop one packet bcz queue size limit reached.\n"));\r |
8a67d61d | 499 | \r |
500 | //\r | |
501 | // Get the oldest packet.\r | |
502 | //\r | |
503 | OldRxDataWrap = NET_LIST_HEAD (\r | |
504 | &Instance->RcvdPacketQueue,\r | |
505 | MNP_RXDATA_WRAP,\r | |
506 | WrapEntry\r | |
507 | );\r | |
508 | \r | |
509 | //\r | |
510 | // Recycle this OldRxDataWrap, this entry will be removed by the callee.\r | |
511 | //\r | |
512 | MnpRecycleRxData (NULL, (VOID *) OldRxDataWrap);\r | |
513 | Instance->RcvdPacketQueueSize--;\r | |
514 | }\r | |
515 | \r | |
516 | //\r | |
517 | // Update the timeout tick using the configured parameter.\r | |
518 | //\r | |
519 | RxDataWrap->TimeoutTick = Instance->ConfigData.ReceivedQueueTimeoutValue;\r | |
520 | \r | |
521 | //\r | |
522 | // Insert this Wrap into the instance queue.\r | |
523 | //\r | |
e48e37fc | 524 | InsertTailList (&Instance->RcvdPacketQueue, &RxDataWrap->WrapEntry);\r |
8a67d61d | 525 | Instance->RcvdPacketQueueSize++;\r |
526 | }\r | |
527 | \r | |
528 | \r | |
529 | /**\r | |
530 | Match the received packet with the instance receive filters.\r | |
531 | \r | |
3e8c18da | 532 | @param[in] Instance Pointer to the mnp instance context data.\r |
533 | @param[in] RxData Pointer to the EFI_MANAGED_NETWORK_RECEIVE_DATA.\r | |
534 | @param[in] GroupAddress Pointer to the GroupAddress, the GroupAddress is\r | |
8a67d61d | 535 | non-NULL and it contains the destination multicast\r |
536 | mac address of the received packet if the packet\r | |
537 | destinated to a multicast mac address.\r | |
3e8c18da | 538 | @param[in] PktAttr The received packets attribute.\r |
8a67d61d | 539 | \r |
540 | @return The received packet matches the instance's receive filters or not.\r | |
541 | \r | |
542 | **/\r | |
8a67d61d | 543 | BOOLEAN\r |
544 | MnpMatchPacket (\r | |
779ae357 | 545 | IN MNP_INSTANCE_DATA *Instance,\r |
546 | IN EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData,\r | |
547 | IN MNP_GROUP_ADDRESS *GroupAddress OPTIONAL,\r | |
548 | IN UINT8 PktAttr\r | |
8a67d61d | 549 | )\r |
550 | {\r | |
551 | EFI_MANAGED_NETWORK_CONFIG_DATA *ConfigData;\r | |
e48e37fc | 552 | LIST_ENTRY *Entry;\r |
8a67d61d | 553 | MNP_GROUP_CONTROL_BLOCK *GroupCtrlBlk;\r |
554 | \r | |
555 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
556 | \r | |
557 | ConfigData = &Instance->ConfigData;\r | |
558 | \r | |
8a67d61d | 559 | //\r |
560 | // Check the protocol type.\r | |
561 | //\r | |
562 | if ((ConfigData->ProtocolTypeFilter != 0) && (ConfigData->ProtocolTypeFilter != RxData->ProtocolType)) {\r | |
563 | return FALSE;\r | |
564 | }\r | |
565 | \r | |
36ee91ca | 566 | if (ConfigData->EnablePromiscuousReceive) {\r |
567 | //\r | |
568 | // Always match if this instance is configured to be promiscuous.\r | |
569 | //\r | |
570 | return TRUE;\r | |
571 | }\r | |
572 | \r | |
8a67d61d | 573 | //\r |
574 | // The protocol type is matched, check receive filter, include unicast and broadcast.\r | |
575 | //\r | |
576 | if ((Instance->ReceiveFilter & PktAttr) != 0) {\r | |
577 | return TRUE;\r | |
578 | }\r | |
579 | \r | |
580 | //\r | |
581 | // Check multicast addresses.\r | |
582 | //\r | |
583 | if (ConfigData->EnableMulticastReceive && RxData->MulticastFlag) {\r | |
584 | \r | |
585 | ASSERT (GroupAddress != NULL);\r | |
586 | \r | |
587 | NET_LIST_FOR_EACH (Entry, &Instance->GroupCtrlBlkList) {\r | |
588 | \r | |
589 | GroupCtrlBlk = NET_LIST_USER_STRUCT (Entry, MNP_GROUP_CONTROL_BLOCK, CtrlBlkEntry);\r | |
590 | if (GroupCtrlBlk->GroupAddress == GroupAddress) {\r | |
591 | //\r | |
592 | // The instance is configured to receiveing packets destinated to this\r | |
593 | // multicast address.\r | |
594 | //\r | |
595 | return TRUE;\r | |
596 | }\r | |
597 | }\r | |
598 | }\r | |
599 | \r | |
600 | //\r | |
601 | // No match.\r | |
602 | //\r | |
603 | return FALSE;\r | |
604 | }\r | |
605 | \r | |
606 | \r | |
607 | /**\r | |
608 | Analyse the received packets.\r | |
609 | \r | |
6e4bac4d | 610 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
611 | @param[in] Nbuf Pointer to the net buffer holding the received\r | |
612 | packet.\r | |
613 | @param[in, out] RxData Pointer to the buffer used to save the analysed\r | |
614 | result in EFI_MANAGED_NETWORK_RECEIVE_DATA.\r | |
615 | @param[out] GroupAddress Pointer to pointer to a MNP_GROUP_ADDRESS used to\r | |
616 | pass out the address of the multicast address the\r | |
617 | received packet destinated to.\r | |
618 | @param[out] PktAttr Pointer to the buffer used to save the analysed\r | |
619 | packet attribute.\r | |
8a67d61d | 620 | \r |
621 | **/\r | |
8a67d61d | 622 | VOID\r |
623 | MnpAnalysePacket (\r | |
779ae357 | 624 | IN MNP_SERVICE_DATA *MnpServiceData,\r |
625 | IN NET_BUF *Nbuf,\r | |
626 | IN OUT EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData,\r | |
627 | OUT MNP_GROUP_ADDRESS **GroupAddress,\r | |
628 | OUT UINT8 *PktAttr\r | |
8a67d61d | 629 | )\r |
630 | {\r | |
631 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
779ae357 | 632 | MNP_DEVICE_DATA *MnpDeviceData;\r |
8a67d61d | 633 | UINT8 *BufPtr;\r |
e48e37fc | 634 | LIST_ENTRY *Entry;\r |
8a67d61d | 635 | \r |
779ae357 | 636 | MnpDeviceData = MnpServiceData->MnpDeviceData;\r |
637 | SnpMode = MnpDeviceData->Snp->Mode;\r | |
8a67d61d | 638 | \r |
639 | //\r | |
640 | // Get the packet buffer.\r | |
641 | //\r | |
642 | BufPtr = NetbufGetByte (Nbuf, 0, NULL);\r | |
643 | ASSERT (BufPtr != NULL);\r | |
644 | \r | |
645 | //\r | |
646 | // Set the initial values.\r | |
647 | //\r | |
648 | RxData->BroadcastFlag = FALSE;\r | |
649 | RxData->MulticastFlag = FALSE;\r | |
650 | RxData->PromiscuousFlag = FALSE;\r | |
651 | *PktAttr = UNICAST_PACKET;\r | |
652 | \r | |
653 | if (!NET_MAC_EQUAL (&SnpMode->CurrentAddress, BufPtr, SnpMode->HwAddressSize)) {\r | |
654 | //\r | |
655 | // This packet isn't destinated to our current mac address, it't not unicast.\r | |
656 | //\r | |
657 | *PktAttr = 0;\r | |
658 | \r | |
659 | if (NET_MAC_EQUAL (&SnpMode->BroadcastAddress, BufPtr, SnpMode->HwAddressSize)) {\r | |
660 | //\r | |
661 | // It's broadcast.\r | |
662 | //\r | |
663 | RxData->BroadcastFlag = TRUE;\r | |
664 | *PktAttr = BROADCAST_PACKET;\r | |
665 | } else if ((*BufPtr & 0x01) == 0x1) {\r | |
666 | //\r | |
667 | // It's multicast, try to match the multicast filters.\r | |
668 | //\r | |
779ae357 | 669 | NET_LIST_FOR_EACH (Entry, &MnpDeviceData->GroupAddressList) {\r |
8a67d61d | 670 | \r |
671 | *GroupAddress = NET_LIST_USER_STRUCT (Entry, MNP_GROUP_ADDRESS, AddrEntry);\r | |
672 | if (NET_MAC_EQUAL (BufPtr, &((*GroupAddress)->Address), SnpMode->HwAddressSize)) {\r | |
673 | RxData->MulticastFlag = TRUE;\r | |
674 | break;\r | |
675 | }\r | |
676 | }\r | |
677 | \r | |
678 | if (!RxData->MulticastFlag) {\r | |
679 | //\r | |
680 | // No match, set GroupAddress to NULL. This multicast packet must\r | |
681 | // be the result of PROMISUCOUS or PROMISUCOUS_MULTICAST flag is on.\r | |
682 | //\r | |
683 | *GroupAddress = NULL;\r | |
684 | RxData->PromiscuousFlag = TRUE;\r | |
685 | \r | |
779ae357 | 686 | if (MnpDeviceData->PromiscuousCount == 0) {\r |
8a67d61d | 687 | //\r |
688 | // Skip the below code, there is no receiver of this packet.\r | |
689 | //\r | |
690 | return ;\r | |
691 | }\r | |
692 | }\r | |
693 | } else {\r | |
694 | RxData->PromiscuousFlag = TRUE;\r | |
695 | }\r | |
696 | }\r | |
697 | \r | |
e48e37fc | 698 | ZeroMem (&RxData->Timestamp, sizeof (EFI_TIME));\r |
8a67d61d | 699 | \r |
700 | //\r | |
701 | // Fill the common parts of RxData.\r | |
702 | //\r | |
703 | RxData->PacketLength = Nbuf->TotalSize;\r | |
704 | RxData->HeaderLength = SnpMode->MediaHeaderSize;\r | |
705 | RxData->AddressLength = SnpMode->HwAddressSize;\r | |
706 | RxData->DataLength = RxData->PacketLength - RxData->HeaderLength;\r | |
707 | RxData->ProtocolType = NTOHS (*(UINT16 *) (BufPtr + 2 * SnpMode->HwAddressSize));\r | |
708 | }\r | |
709 | \r | |
710 | \r | |
711 | /**\r | |
712 | Wrap the RxData.\r | |
713 | \r | |
6e4bac4d | 714 | @param[in] Instance Pointer to the mnp instance context data.\r |
715 | @param[in] RxData Pointer to the receive data to wrap.\r | |
8a67d61d | 716 | \r |
717 | @return Pointer to a MNP_RXDATA_WRAP which wraps the RxData.\r | |
718 | \r | |
719 | **/\r | |
8a67d61d | 720 | MNP_RXDATA_WRAP *\r |
721 | MnpWrapRxData (\r | |
779ae357 | 722 | IN MNP_INSTANCE_DATA *Instance,\r |
723 | IN EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData\r | |
8a67d61d | 724 | )\r |
725 | {\r | |
726 | EFI_STATUS Status;\r | |
727 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
728 | \r | |
729 | //\r | |
730 | // Allocate memory.\r | |
731 | //\r | |
e48e37fc | 732 | RxDataWrap = AllocatePool (sizeof (MNP_RXDATA_WRAP));\r |
8a67d61d | 733 | if (RxDataWrap == NULL) {\r |
e48e37fc | 734 | DEBUG ((EFI_D_ERROR, "MnpDispatchPacket: Failed to allocate a MNP_RXDATA_WRAP.\n"));\r |
8a67d61d | 735 | return NULL;\r |
736 | }\r | |
737 | \r | |
738 | RxDataWrap->Instance = Instance;\r | |
739 | \r | |
740 | //\r | |
741 | // Fill the RxData in RxDataWrap,\r | |
742 | //\r | |
687a2e5f | 743 | CopyMem (&RxDataWrap->RxData, RxData, sizeof (RxDataWrap->RxData));\r |
8a67d61d | 744 | \r |
745 | //\r | |
746 | // Create the recycle event.\r | |
747 | //\r | |
748 | Status = gBS->CreateEvent (\r | |
749 | EVT_NOTIFY_SIGNAL,\r | |
e48e37fc | 750 | TPL_NOTIFY,\r |
8a67d61d | 751 | MnpRecycleRxData,\r |
752 | RxDataWrap,\r | |
753 | &RxDataWrap->RxData.RecycleEvent\r | |
754 | );\r | |
755 | if (EFI_ERROR (Status)) {\r | |
e48e37fc | 756 | DEBUG ((EFI_D_ERROR, "MnpDispatchPacket: gBS->CreateEvent failed, %r.\n", Status));\r |
779ae357 | 757 | \r |
766c7483 | 758 | FreePool (RxDataWrap);\r |
8a67d61d | 759 | return NULL;\r |
760 | }\r | |
761 | \r | |
762 | return RxDataWrap;\r | |
763 | }\r | |
764 | \r | |
765 | \r | |
766 | /**\r | |
767 | Enqueue the received the packets to the instances belonging to the\r | |
768 | MnpServiceData.\r | |
769 | \r | |
6e4bac4d | 770 | @param[in] MnpServiceData Pointer to the mnp service context data.\r |
771 | @param[in] Nbuf Pointer to the net buffer representing the received\r | |
772 | packet.\r | |
8a67d61d | 773 | \r |
774 | **/\r | |
8a67d61d | 775 | VOID\r |
776 | MnpEnqueuePacket (\r | |
779ae357 | 777 | IN MNP_SERVICE_DATA *MnpServiceData,\r |
778 | IN NET_BUF *Nbuf\r | |
8a67d61d | 779 | )\r |
780 | {\r | |
e48e37fc | 781 | LIST_ENTRY *Entry;\r |
8a67d61d | 782 | MNP_INSTANCE_DATA *Instance;\r |
783 | EFI_MANAGED_NETWORK_RECEIVE_DATA RxData;\r | |
784 | UINT8 PktAttr;\r | |
785 | MNP_GROUP_ADDRESS *GroupAddress;\r | |
786 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
787 | \r | |
67a58d0f | 788 | \r |
789 | GroupAddress = NULL;\r | |
8a67d61d | 790 | //\r |
791 | // First, analyse the packet header.\r | |
792 | //\r | |
793 | MnpAnalysePacket (MnpServiceData, Nbuf, &RxData, &GroupAddress, &PktAttr);\r | |
794 | \r | |
779ae357 | 795 | if (RxData.PromiscuousFlag && (MnpServiceData->MnpDeviceData->PromiscuousCount == 0)) {\r |
8a67d61d | 796 | //\r |
797 | // No receivers, no more action need.\r | |
798 | //\r | |
799 | return ;\r | |
800 | }\r | |
801 | \r | |
802 | //\r | |
803 | // Iterate the children to find match.\r | |
804 | //\r | |
805 | NET_LIST_FOR_EACH (Entry, &MnpServiceData->ChildrenList) {\r | |
806 | \r | |
807 | Instance = NET_LIST_USER_STRUCT (Entry, MNP_INSTANCE_DATA, InstEntry);\r | |
808 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
809 | \r | |
810 | if (!Instance->Configured) {\r | |
811 | continue;\r | |
812 | }\r | |
813 | \r | |
814 | //\r | |
815 | // Check the packet against the instance receive filters.\r | |
816 | //\r | |
817 | if (MnpMatchPacket (Instance, &RxData, GroupAddress, PktAttr)) {\r | |
8a67d61d | 818 | //\r |
819 | // Wrap the RxData.\r | |
820 | //\r | |
687a2e5f | 821 | RxDataWrap = MnpWrapRxData (Instance, &RxData);\r |
8a67d61d | 822 | if (RxDataWrap == NULL) {\r |
823 | continue;\r | |
824 | }\r | |
825 | \r | |
826 | //\r | |
827 | // Associate RxDataWrap with Nbuf and increase the RefCnt.\r | |
828 | //\r | |
829 | RxDataWrap->Nbuf = Nbuf;\r | |
830 | NET_GET_REF (RxDataWrap->Nbuf);\r | |
831 | \r | |
832 | //\r | |
833 | // Queue the packet into the instance queue.\r | |
834 | //\r | |
835 | MnpQueueRcvdPacket (Instance, RxDataWrap);\r | |
836 | }\r | |
837 | }\r | |
838 | }\r | |
839 | \r | |
840 | \r | |
841 | /**\r | |
842 | Try to receive a packet and deliver it.\r | |
843 | \r | |
779ae357 | 844 | @param[in, out] MnpDeviceData Pointer to the mnp device context data.\r |
8a67d61d | 845 | \r |
846 | @retval EFI_SUCCESS add return value to function comment\r | |
847 | @retval EFI_NOT_STARTED The simple network protocol is not started.\r | |
848 | @retval EFI_NOT_READY No packet received.\r | |
849 | @retval EFI_DEVICE_ERROR An unexpected error occurs.\r | |
850 | \r | |
851 | **/\r | |
852 | EFI_STATUS\r | |
853 | MnpReceivePacket (\r | |
779ae357 | 854 | IN OUT MNP_DEVICE_DATA *MnpDeviceData\r |
8a67d61d | 855 | )\r |
856 | {\r | |
857 | EFI_STATUS Status;\r | |
858 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
859 | NET_BUF *Nbuf;\r | |
860 | UINT8 *BufPtr;\r | |
861 | UINTN BufLen;\r | |
862 | UINTN HeaderSize;\r | |
863 | UINT32 Trimmed;\r | |
779ae357 | 864 | MNP_SERVICE_DATA *MnpServiceData;\r |
865 | UINT16 VlanId;\r | |
866 | BOOLEAN IsVlanPacket;\r | |
8a67d61d | 867 | \r |
779ae357 | 868 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r |
8a67d61d | 869 | \r |
779ae357 | 870 | Snp = MnpDeviceData->Snp;\r |
8a67d61d | 871 | if (Snp->Mode->State != EfiSimpleNetworkInitialized) {\r |
872 | //\r | |
873 | // The simple network protocol is not started.\r | |
874 | //\r | |
875 | return EFI_NOT_STARTED;\r | |
876 | }\r | |
877 | \r | |
779ae357 | 878 | if (MnpDeviceData->RxNbufCache == NULL) {\r |
8a67d61d | 879 | //\r |
880 | // Try to get a new buffer as there may be buffers recycled.\r | |
881 | //\r | |
779ae357 | 882 | MnpDeviceData->RxNbufCache = MnpAllocNbuf (MnpDeviceData);\r |
8a67d61d | 883 | \r |
779ae357 | 884 | if (MnpDeviceData->RxNbufCache == NULL) {\r |
8a67d61d | 885 | //\r |
2048c585 | 886 | // No available buffer in the buffer pool.\r |
8a67d61d | 887 | //\r |
888 | return EFI_DEVICE_ERROR;\r | |
889 | }\r | |
890 | \r | |
891 | NetbufAllocSpace (\r | |
779ae357 | 892 | MnpDeviceData->RxNbufCache,\r |
893 | MnpDeviceData->BufferLength,\r | |
8a67d61d | 894 | NET_BUF_TAIL\r |
895 | );\r | |
896 | }\r | |
897 | \r | |
779ae357 | 898 | Nbuf = MnpDeviceData->RxNbufCache;\r |
8a67d61d | 899 | BufLen = Nbuf->TotalSize;\r |
900 | BufPtr = NetbufGetByte (Nbuf, 0, NULL);\r | |
901 | ASSERT (BufPtr != NULL);\r | |
902 | \r | |
903 | //\r | |
904 | // Receive packet through Snp.\r | |
905 | //\r | |
906 | Status = Snp->Receive (Snp, &HeaderSize, &BufLen, BufPtr, NULL, NULL, NULL);\r | |
907 | if (EFI_ERROR (Status)) {\r | |
8a67d61d | 908 | DEBUG_CODE (\r |
909 | if (Status != EFI_NOT_READY) {\r | |
982a9eae | 910 | DEBUG ((EFI_D_WARN, "MnpReceivePacket: Snp->Receive() = %r.\n", Status));\r |
911 | }\r | |
8a67d61d | 912 | );\r |
913 | \r | |
914 | return Status;\r | |
915 | }\r | |
916 | \r | |
917 | //\r | |
918 | // Sanity check.\r | |
919 | //\r | |
920 | if ((HeaderSize != Snp->Mode->MediaHeaderSize) || (BufLen < HeaderSize)) {\r | |
e48e37fc | 921 | DEBUG (\r |
922 | (EFI_D_WARN,\r | |
923 | "MnpReceivePacket: Size error, HL:TL = %d:%d.\n",\r | |
8a67d61d | 924 | HeaderSize,\r |
925 | BufLen)\r | |
926 | );\r | |
927 | return EFI_DEVICE_ERROR;\r | |
928 | }\r | |
929 | \r | |
930 | Trimmed = 0;\r | |
931 | if (Nbuf->TotalSize != BufLen) {\r | |
932 | //\r | |
933 | // Trim the packet from tail.\r | |
934 | //\r | |
935 | Trimmed = NetbufTrim (Nbuf, Nbuf->TotalSize - (UINT32) BufLen, NET_BUF_TAIL);\r | |
936 | ASSERT (Nbuf->TotalSize == BufLen);\r | |
937 | }\r | |
938 | \r | |
779ae357 | 939 | VlanId = 0;\r |
ef89996c | 940 | if (MnpDeviceData->NumberOfVlan != 0) {\r |
941 | //\r | |
942 | // VLAN is configured, remove the VLAN tag if any\r | |
943 | //\r | |
944 | IsVlanPacket = MnpRemoveVlanTag (MnpDeviceData, Nbuf, &VlanId);\r | |
945 | } else {\r | |
946 | IsVlanPacket = FALSE;\r | |
947 | }\r | |
779ae357 | 948 | \r |
949 | MnpServiceData = MnpFindServiceData (MnpDeviceData, VlanId);\r | |
950 | if (MnpServiceData == NULL) {\r | |
951 | //\r | |
952 | // VLAN is not set for this tagged frame, ignore this packet\r | |
953 | //\r | |
954 | if (Trimmed > 0) {\r | |
955 | NetbufAllocSpace (Nbuf, Trimmed, NET_BUF_TAIL);\r | |
956 | }\r | |
957 | \r | |
958 | if (IsVlanPacket) {\r | |
959 | NetbufAllocSpace (Nbuf, NET_VLAN_TAG_LEN, NET_BUF_HEAD);\r | |
960 | }\r | |
961 | \r | |
962 | goto EXIT;\r | |
963 | }\r | |
964 | \r | |
8a67d61d | 965 | //\r |
966 | // Enqueue the packet to the matched instances.\r | |
967 | //\r | |
968 | MnpEnqueuePacket (MnpServiceData, Nbuf);\r | |
969 | \r | |
970 | if (Nbuf->RefCnt > 2) {\r | |
971 | //\r | |
972 | // RefCnt > 2 indicates there is at least one receiver of this packet.\r | |
973 | // Free the current RxNbufCache and allocate a new one.\r | |
974 | //\r | |
779ae357 | 975 | MnpFreeNbuf (MnpDeviceData, Nbuf);\r |
8a67d61d | 976 | \r |
779ae357 | 977 | Nbuf = MnpAllocNbuf (MnpDeviceData);\r |
978 | MnpDeviceData->RxNbufCache = Nbuf;\r | |
8a67d61d | 979 | if (Nbuf == NULL) {\r |
e48e37fc | 980 | DEBUG ((EFI_D_ERROR, "MnpReceivePacket: Alloc packet for receiving cache failed.\n"));\r |
8a67d61d | 981 | return EFI_DEVICE_ERROR;\r |
982 | }\r | |
983 | \r | |
779ae357 | 984 | NetbufAllocSpace (Nbuf, MnpDeviceData->BufferLength, NET_BUF_TAIL);\r |
8a67d61d | 985 | } else {\r |
986 | //\r | |
987 | // No receiver for this packet.\r | |
988 | //\r | |
772db4bb | 989 | if (Trimmed > 0) {\r |
990 | NetbufAllocSpace (Nbuf, Trimmed, NET_BUF_TAIL);\r | |
991 | }\r | |
779ae357 | 992 | if (IsVlanPacket) {\r |
993 | NetbufAllocSpace (Nbuf, NET_VLAN_TAG_LEN, NET_BUF_HEAD);\r | |
994 | }\r | |
772db4bb | 995 | \r |
8a67d61d | 996 | goto EXIT;\r |
997 | }\r | |
998 | //\r | |
999 | // Deliver the queued packets.\r | |
1000 | //\r | |
1001 | MnpDeliverPacket (MnpServiceData);\r | |
1002 | \r | |
1003 | EXIT:\r | |
1004 | \r | |
779ae357 | 1005 | ASSERT (Nbuf->TotalSize == MnpDeviceData->BufferLength);\r |
8a67d61d | 1006 | \r |
1007 | return Status;\r | |
1008 | }\r | |
1009 | \r | |
1010 | \r | |
1011 | /**\r | |
1012 | Remove the received packets if timeout occurs.\r | |
1013 | \r | |
dd29f3ed | 1014 | @param[in] Event The event this notify function registered to.\r |
1015 | @param[in] Context Pointer to the context data registered to the event.\r | |
779ae357 | 1016 | \r |
8a67d61d | 1017 | **/\r |
1018 | VOID\r | |
1019 | EFIAPI\r | |
1020 | MnpCheckPacketTimeout (\r | |
779ae357 | 1021 | IN EFI_EVENT Event,\r |
1022 | IN VOID *Context\r | |
8a67d61d | 1023 | )\r |
1024 | {\r | |
779ae357 | 1025 | MNP_DEVICE_DATA *MnpDeviceData;\r |
8a67d61d | 1026 | MNP_SERVICE_DATA *MnpServiceData;\r |
e48e37fc | 1027 | LIST_ENTRY *Entry;\r |
779ae357 | 1028 | LIST_ENTRY *ServiceEntry;\r |
e48e37fc | 1029 | LIST_ENTRY *RxEntry;\r |
1030 | LIST_ENTRY *NextEntry;\r | |
8a67d61d | 1031 | MNP_INSTANCE_DATA *Instance;\r |
1032 | MNP_RXDATA_WRAP *RxDataWrap;\r | |
1033 | EFI_TPL OldTpl;\r | |
1034 | \r | |
779ae357 | 1035 | MnpDeviceData = (MNP_DEVICE_DATA *) Context;\r |
1036 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
8a67d61d | 1037 | \r |
779ae357 | 1038 | NET_LIST_FOR_EACH (ServiceEntry, &MnpDeviceData->ServiceList) {\r |
1039 | MnpServiceData = MNP_SERVICE_DATA_FROM_LINK (ServiceEntry);\r | |
8a67d61d | 1040 | \r |
779ae357 | 1041 | NET_LIST_FOR_EACH (Entry, &MnpServiceData->ChildrenList) {\r |
8a67d61d | 1042 | \r |
779ae357 | 1043 | Instance = NET_LIST_USER_STRUCT (Entry, MNP_INSTANCE_DATA, InstEntry);\r |
1044 | NET_CHECK_SIGNATURE (Instance, MNP_INSTANCE_DATA_SIGNATURE);\r | |
8a67d61d | 1045 | \r |
779ae357 | 1046 | if (!Instance->Configured || (Instance->ConfigData.ReceivedQueueTimeoutValue == 0)) {\r |
1047 | //\r | |
1048 | // This instance is not configured or there is no receive time out,\r | |
1049 | // just skip to the next instance.\r | |
1050 | //\r | |
1051 | continue;\r | |
1052 | }\r | |
8a67d61d | 1053 | \r |
779ae357 | 1054 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r |
8a67d61d | 1055 | \r |
779ae357 | 1056 | NET_LIST_FOR_EACH_SAFE (RxEntry, NextEntry, &Instance->RcvdPacketQueue) {\r |
8a67d61d | 1057 | \r |
779ae357 | 1058 | RxDataWrap = NET_LIST_USER_STRUCT (RxEntry, MNP_RXDATA_WRAP, WrapEntry);\r |
8a67d61d | 1059 | \r |
8a67d61d | 1060 | //\r |
779ae357 | 1061 | // TimeoutTick unit is microsecond, MNP_TIMEOUT_CHECK_INTERVAL unit is 100ns.\r |
8a67d61d | 1062 | //\r |
779ae357 | 1063 | if (RxDataWrap->TimeoutTick >= (MNP_TIMEOUT_CHECK_INTERVAL / 10)) {\r |
1064 | RxDataWrap->TimeoutTick -= (MNP_TIMEOUT_CHECK_INTERVAL / 10);\r | |
1065 | } else {\r | |
1066 | //\r | |
1067 | // Drop the timeout packet.\r | |
1068 | //\r | |
1069 | DEBUG ((EFI_D_WARN, "MnpCheckPacketTimeout: Received packet timeout.\n"));\r | |
1070 | MnpRecycleRxData (NULL, RxDataWrap);\r | |
1071 | Instance->RcvdPacketQueueSize--;\r | |
1072 | }\r | |
8a67d61d | 1073 | }\r |
8a67d61d | 1074 | \r |
779ae357 | 1075 | gBS->RestoreTPL (OldTpl);\r |
1076 | }\r | |
8a67d61d | 1077 | }\r |
1078 | }\r | |
1079 | \r | |
dd29f3ed | 1080 | /**\r |
1081 | Poll to update MediaPresent field in SNP ModeData by Snp->GetStatus().\r | |
1082 | \r | |
1083 | @param[in] Event The event this notify function registered to.\r | |
1084 | @param[in] Context Pointer to the context data registered to the event.\r | |
1085 | \r | |
1086 | **/\r | |
1087 | VOID\r | |
1088 | EFIAPI\r | |
1089 | MnpCheckMediaStatus (\r | |
1090 | IN EFI_EVENT Event,\r | |
1091 | IN VOID *Context\r | |
1092 | )\r | |
1093 | {\r | |
1094 | MNP_DEVICE_DATA *MnpDeviceData;\r | |
1095 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
1096 | UINT32 InterruptStatus;\r | |
1097 | \r | |
1098 | MnpDeviceData = (MNP_DEVICE_DATA *) Context;\r | |
1099 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
1100 | \r | |
1101 | Snp = MnpDeviceData->Snp;\r | |
1102 | if (Snp->Mode->MediaPresentSupported) {\r | |
1103 | //\r | |
1104 | // Upon successful return of GetStatus(), the MediaPresent field of\r | |
1105 | // EFI_SIMPLE_NETWORK_MODE will be updated to reflect any change of media status\r | |
1106 | //\r | |
1107 | Snp->GetStatus (Snp, &InterruptStatus, NULL);\r | |
1108 | }\r | |
1109 | }\r | |
1110 | \r | |
8a67d61d | 1111 | /**\r |
1112 | Poll to receive the packets from Snp. This function is either called by upperlayer\r | |
1113 | protocols/applications or the system poll timer notify mechanism.\r | |
1114 | \r | |
dd29f3ed | 1115 | @param[in] Event The event this notify function registered to.\r |
1116 | @param[in] Context Pointer to the context data registered to the event.\r | |
8a67d61d | 1117 | \r |
8a67d61d | 1118 | **/\r |
1119 | VOID\r | |
1120 | EFIAPI\r | |
1121 | MnpSystemPoll (\r | |
dd29f3ed | 1122 | IN EFI_EVENT Event,\r |
1123 | IN VOID *Context\r | |
8a67d61d | 1124 | )\r |
1125 | {\r | |
779ae357 | 1126 | MNP_DEVICE_DATA *MnpDeviceData;\r |
8a67d61d | 1127 | \r |
779ae357 | 1128 | MnpDeviceData = (MNP_DEVICE_DATA *) Context;\r |
1129 | NET_CHECK_SIGNATURE (MnpDeviceData, MNP_DEVICE_DATA_SIGNATURE);\r | |
8a67d61d | 1130 | \r |
1131 | //\r | |
1132 | // Try to receive packets from Snp.\r | |
1133 | //\r | |
779ae357 | 1134 | MnpReceivePacket (MnpDeviceData);\r |
36ee91ca | 1135 | \r |
a4df47f1 | 1136 | //\r |
1137 | // Dispatch the DPC queued by the NotifyFunction of rx token's events.\r | |
1138 | //\r | |
d8d26fb2 | 1139 | DispatchDpc ();\r |
8a67d61d | 1140 | }\r |