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8a67d61d | 1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2005 - 2007, Intel Corporation\r | |
4 | All rights reserved. This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | MnpMain.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Implementation of Managed Network Protocol public services.\r | |
19 | \r | |
20 | \r | |
21 | **/\r | |
22 | \r | |
23 | #include <Library/BaseMemoryLib.h>\r | |
24 | #include <Library/BaseLib.h>\r | |
25 | \r | |
26 | #include "MnpImpl.h"\r | |
27 | \r | |
28 | \r | |
29 | /**\r | |
b6c4ecad | 30 | Returns the operational parameters for the current MNP child driver. May also\r |
31 | support returning the underlying SNP driver mode data. \r | |
32 | \r | |
33 | The GetModeData() function is used to read the current mode data (operational\r | |
34 | parameters) from the MNP or the underlying SNP. \r | |
35 | \r | |
36 | @param This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.\r | |
37 | @param MnpConfigData Pointer to storage for MNP operational parameters. Type\r | |
38 | EFI_MANAGED_NETWORK_CONFIG_DATA is defined in "Related\r | |
39 | Definitions" below.\r | |
40 | @param SnpModeData Pointer to storage for SNP operational parameters. This\r | |
41 | feature may be unsupported. Type EFI_SIMPLE_NETWORK_MODE\r | |
42 | is defined in the EFI_SIMPLE_NETWORK_PROTOCOL.\r | |
43 | \r | |
44 | @retval EFI_SUCCESS The operation completed successfully.\r | |
45 | @retval EFI_INVALID_PARAMETER This is NULL.\r | |
46 | @retval EFI_UNSUPPORTED The requested feature is unsupported in this\r | |
47 | MNP implementation.\r | |
48 | @retval EFI_NOT_STARTED This MNP child driver instance has not been\r | |
49 | configured. The default values are returned in\r | |
50 | MnpConfigData if it is not NULL.\r | |
51 | @retval Other The mode data could not be read.\r | |
8a67d61d | 52 | \r |
53 | **/\r | |
54 | EFI_STATUS\r | |
55 | EFIAPI\r | |
56 | MnpGetModeData (\r | |
57 | IN EFI_MANAGED_NETWORK_PROTOCOL *This,\r | |
b6c4ecad | 58 | OUT EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData, OPTIONAL\r |
59 | OUT EFI_SIMPLE_NETWORK_MODE *SnpModeData OPTIONAL\r | |
8a67d61d | 60 | )\r |
61 | {\r | |
62 | MNP_INSTANCE_DATA *Instance;\r | |
63 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
64 | EFI_TPL OldTpl;\r | |
65 | EFI_STATUS Status;\r | |
66 | \r | |
67 | if (This == NULL) {\r | |
68 | \r | |
69 | return EFI_INVALID_PARAMETER;\r | |
70 | }\r | |
71 | \r | |
72 | Instance = MNP_INSTANCE_DATA_FROM_THIS (This);\r | |
73 | \r | |
e48e37fc | 74 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
8a67d61d | 75 | \r |
76 | if (MnpConfigData != NULL) {\r | |
77 | //\r | |
78 | // Copy the instance configuration data.\r | |
79 | //\r | |
687a2e5f | 80 | CopyMem (MnpConfigData, &Instance->ConfigData, sizeof (*MnpConfigData));\r |
8a67d61d | 81 | }\r |
82 | \r | |
83 | if (SnpModeData != NULL) {\r | |
84 | //\r | |
85 | // Copy the underlayer Snp mode data.\r | |
86 | //\r | |
87 | Snp = Instance->MnpServiceData->Snp;\r | |
687a2e5f | 88 | CopyMem (SnpModeData, Snp->Mode, sizeof (*SnpModeData));\r |
8a67d61d | 89 | }\r |
90 | \r | |
91 | if (!Instance->Configured) {\r | |
92 | Status = EFI_NOT_STARTED;\r | |
93 | } else {\r | |
94 | Status = EFI_SUCCESS;\r | |
95 | }\r | |
96 | \r | |
e48e37fc | 97 | gBS->RestoreTPL (OldTpl);\r |
8a67d61d | 98 | \r |
99 | return Status;\r | |
100 | }\r | |
101 | \r | |
102 | \r | |
103 | /**\r | |
b6c4ecad | 104 | Sets or clears the operational parameters for the MNP child driver. \r |
105 | \r | |
106 | The Configure() function is used to set, change, or reset the operational \r | |
107 | parameters for the MNP child driver instance. Until the operational parameters\r | |
108 | have been set, no network traffic can be sent or received by this MNP child\r | |
109 | driver instance. Once the operational parameters have been reset, no more\r | |
110 | traffic can be sent or received until the operational parameters have been set\r | |
111 | again.\r | |
112 | Each MNP child driver instance can be started and stopped independently of\r | |
113 | each other by setting or resetting their receive filter settings with the\r | |
114 | Configure() function.\r | |
115 | After any successful call to Configure(), the MNP child driver instance is\r | |
116 | started. The internal periodic timer (if supported) is enabled. Data can be\r | |
117 | transmitted and may be received if the receive filters have also been enabled.\r | |
118 | Note: If multiple MNP child driver instances will receive the same packet\r | |
119 | because of overlapping receive filter settings, then the first MNP child\r | |
120 | driver instance will receive the original packet and additional instances will\r | |
121 | receive copies of the original packet.\r | |
122 | Note: Warning: Receive filter settings that overlap will consume extra\r | |
123 | processor and/or DMA resources and degrade system and network performance.\r | |
124 | \r | |
125 | @param This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.\r | |
126 | @param MnpConfigData Pointer to configuration data that will be assigned\r | |
127 | to the MNP child driver instance. If NULL, the MNP\r | |
128 | child driver instance is reset to startup defaults\r | |
129 | and all pending transmit and receive requests are\r | |
130 | flushed. Type EFI_MANAGED_NETWORK_CONFIG_DATA is\r | |
131 | defined in\r | |
132 | EFI_MANAGED_NETWORK_PROTOCOL.GetModeData().\r | |
8a67d61d | 133 | \r |
134 | @retval EFI_SUCCESS The operation completed successfully.\r | |
b6c4ecad | 135 | @retval EFI_INVALID_PARAMETER One or more of the following conditions is\r |
136 | TRUE:\r | |
137 | * This is NULL.\r | |
138 | * MnpConfigData.ProtocolTypeFilter is not\r | |
139 | valid.\r | |
140 | The operational data for the MNP child driver\r | |
141 | instance is unchanged.\r | |
142 | @retval EFI_OUT_OF_RESOURCES Required system resources (usually memory)\r | |
143 | could not be allocated.\r | |
144 | The MNP child driver instance has been reset to\r | |
145 | startup defaults.\r | |
146 | @retval EFI_UNSUPPORTED The requested feature is unsupported in\r | |
147 | this [MNP] implementation. The operational data\r | |
148 | for the MNP child driver instance is unchanged.\r | |
149 | @retval EFI_DEVICE_ERROR An unexpected network or system error\r | |
150 | occurred. The MNP child driver instance has\r | |
151 | been reset to startup defaults.\r | |
8a67d61d | 152 | @retval Other The MNP child driver instance has been reset to\r |
153 | startup defaults.\r | |
154 | \r | |
155 | **/\r | |
156 | EFI_STATUS\r | |
157 | EFIAPI\r | |
158 | MnpConfigure (\r | |
159 | IN EFI_MANAGED_NETWORK_PROTOCOL *This,\r | |
160 | IN EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData OPTIONAL\r | |
161 | )\r | |
162 | {\r | |
163 | MNP_INSTANCE_DATA *Instance;\r | |
164 | EFI_TPL OldTpl;\r | |
165 | EFI_STATUS Status;\r | |
166 | \r | |
167 | if ((This == NULL) ||\r | |
168 | ((MnpConfigData != NULL) &&\r | |
169 | (MnpConfigData->ProtocolTypeFilter > 0) &&\r | |
170 | (MnpConfigData->ProtocolTypeFilter <= 1500))) {\r | |
171 | \r | |
172 | return EFI_INVALID_PARAMETER;\r | |
173 | }\r | |
174 | \r | |
175 | Instance = MNP_INSTANCE_DATA_FROM_THIS (This);\r | |
176 | \r | |
e48e37fc | 177 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
8a67d61d | 178 | \r |
179 | if ((MnpConfigData == NULL) && (!Instance->Configured)) {\r | |
180 | //\r | |
181 | // If the instance is not configured and a reset is requested, just return.\r | |
182 | //\r | |
183 | Status = EFI_SUCCESS;\r | |
184 | goto ON_EXIT;\r | |
185 | }\r | |
186 | \r | |
187 | //\r | |
188 | // Configure the instance.\r | |
189 | //\r | |
190 | Status = MnpConfigureInstance (Instance, MnpConfigData);\r | |
191 | \r | |
192 | ON_EXIT:\r | |
e48e37fc | 193 | gBS->RestoreTPL (OldTpl);\r |
8a67d61d | 194 | \r |
195 | return Status;\r | |
196 | }\r | |
197 | \r | |
198 | \r | |
199 | /**\r | |
b6c4ecad | 200 | Translates an IP multicast address to a hardware (MAC) multicast address. This \r |
201 | function may be unsupported in some MNP implementations. \r | |
202 | \r | |
203 | The McastIpToMac() function translates an IP multicast address to a hardware\r | |
204 | (MAC) multicast address. This function may be implemented by calling the\r | |
205 | underlying EFI_SIMPLE_NETWORK.MCastIpToMac() function, which may also be\r | |
206 | unsupported in some MNP implementations.\r | |
207 | \r | |
208 | @param This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.\r | |
209 | @param Ipv6Flag Set to TRUE to if IpAddress is an IPv6 multicast address.\r | |
210 | Set to FALSE if IpAddress is an IPv4 multicast address.\r | |
211 | @param IpAddress Pointer to the multicast IP address (in network byte order)\r | |
212 | to convert.\r | |
213 | @param MacAddress Pointer to the resulting multicast MAC address. \r | |
214 | \r | |
215 | @retval EFI_SUCCESS The operation completed successfully.\r | |
216 | @retval EFI_INVALID_PARAMETER One of the following conditions is TRUE:\r | |
217 | * This is NULL.\r | |
218 | * IpAddress is NULL.\r | |
219 | * IpAddress is not a valid multicast IP\r | |
220 | address.\r | |
221 | * MacAddress is NULL.\r | |
222 | @retval EFI_NOT_STARTED This MNP child driver instance has not been\r | |
223 | configured.\r | |
224 | @retval EFI_UNSUPPORTED The requested feature is unsupported in this\r | |
225 | MNP implementation.\r | |
226 | @retval EFI_DEVICE_ERROR An unexpected network or system error occurred.\r | |
227 | @retval Other The address could not be converted.\r | |
8a67d61d | 228 | **/\r |
229 | EFI_STATUS\r | |
230 | EFIAPI\r | |
231 | MnpMcastIpToMac (\r | |
232 | IN EFI_MANAGED_NETWORK_PROTOCOL *This,\r | |
233 | IN BOOLEAN Ipv6Flag,\r | |
234 | IN EFI_IP_ADDRESS *IpAddress,\r | |
235 | OUT EFI_MAC_ADDRESS *MacAddress\r | |
236 | )\r | |
237 | {\r | |
238 | EFI_STATUS Status;\r | |
239 | MNP_INSTANCE_DATA *Instance;\r | |
240 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
241 | EFI_TPL OldTpl;\r | |
242 | \r | |
243 | if ((This == NULL) || (IpAddress == NULL) || (MacAddress == NULL)) {\r | |
244 | \r | |
245 | return EFI_INVALID_PARAMETER;\r | |
246 | }\r | |
247 | \r | |
248 | if (Ipv6Flag) {\r | |
249 | //\r | |
250 | // Currently IPv6 isn't supported.\r | |
251 | //\r | |
252 | return EFI_UNSUPPORTED;\r | |
253 | }\r | |
254 | \r | |
255 | if (!IP4_IS_MULTICAST (EFI_NTOHL (*IpAddress))) {\r | |
256 | //\r | |
257 | // The IPv4 address passed in is not a multicast address.\r | |
258 | //\r | |
259 | return EFI_INVALID_PARAMETER;\r | |
260 | }\r | |
261 | \r | |
262 | Instance = MNP_INSTANCE_DATA_FROM_THIS (This);\r | |
263 | \r | |
e48e37fc | 264 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
8a67d61d | 265 | \r |
266 | if (!Instance->Configured) {\r | |
267 | \r | |
268 | Status = EFI_NOT_STARTED;\r | |
269 | goto ON_EXIT;\r | |
270 | }\r | |
271 | \r | |
272 | Snp = Instance->MnpServiceData->Snp;\r | |
273 | ASSERT (Snp != NULL);\r | |
274 | \r | |
275 | if (Snp->Mode->IfType == NET_IFTYPE_ETHERNET) {\r | |
276 | //\r | |
277 | // Translate the IPv4 address into a multicast MAC address if the NIC is an\r | |
278 | // ethernet NIC.\r | |
279 | //\r | |
280 | MacAddress->Addr[0] = 0x01;\r | |
281 | MacAddress->Addr[1] = 0x00;\r | |
282 | MacAddress->Addr[2] = 0x5E;\r | |
4eb65aff | 283 | MacAddress->Addr[3] = (UINT8) (IpAddress->v4.Addr[1] & 0x7F);\r |
8a67d61d | 284 | MacAddress->Addr[4] = IpAddress->v4.Addr[2];\r |
285 | MacAddress->Addr[5] = IpAddress->v4.Addr[3];\r | |
286 | \r | |
287 | Status = EFI_SUCCESS;\r | |
288 | } else {\r | |
289 | //\r | |
290 | // Invoke Snp to translate the multicast IP address.\r | |
291 | //\r | |
292 | Status = Snp->MCastIpToMac (\r | |
293 | Snp,\r | |
294 | Ipv6Flag,\r | |
295 | IpAddress,\r | |
296 | MacAddress\r | |
297 | );\r | |
298 | }\r | |
299 | \r | |
300 | ON_EXIT:\r | |
e48e37fc | 301 | gBS->RestoreTPL (OldTpl);\r |
8a67d61d | 302 | \r |
303 | return Status;\r | |
304 | }\r | |
305 | \r | |
8a67d61d | 306 | /**\r |
b6c4ecad | 307 | Enables and disables receive filters for multicast address. This function may \r |
308 | be unsupported in some MNP implementations.\r | |
309 | \r | |
310 | The Groups() function only adds and removes multicast MAC addresses from the \r | |
311 | filter list. The MNP driver does not transmit or process Internet Group\r | |
312 | Management Protocol (IGMP) packets. If JoinFlag is FALSE and MacAddress is\r | |
313 | NULL, then all joined groups are left.\r | |
314 | \r | |
315 | @param This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.\r | |
316 | @param JoinFlag Set to TRUE to join this multicast group.\r | |
317 | Set to FALSE to leave this multicast group.\r | |
318 | @param MacAddress Pointer to the multicast MAC group (address) to join or\r | |
319 | leave.\r | |
320 | \r | |
321 | @retval EFI_SUCCESS The requested operation completed successfully.\r | |
322 | @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:\r | |
323 | * This is NULL.\r | |
324 | * JoinFlag is TRUE and MacAddress is NULL.\r | |
325 | * MacAddress is not a valid multicast MAC\r | |
326 | address.\r | |
327 | * The MNP multicast group settings are\r | |
328 | unchanged.\r | |
329 | @retval EFI_NOT_STARTED This MNP child driver instance has not been\r | |
330 | configured.\r | |
331 | @retval EFI_ALREADY_STARTED The supplied multicast group is already joined.\r | |
332 | @retval EFI_NOT_FOUND The supplied multicast group is not joined.\r | |
333 | @retval EFI_DEVICE_ERROR An unexpected network or system error occurred.\r | |
334 | The MNP child driver instance has been reset to\r | |
335 | startup defaults.\r | |
336 | @retval EFI_UNSUPPORTED The requested feature is unsupported in this MNP\r | |
337 | implementation.\r | |
338 | @retval Other The requested operation could not be completed.\r | |
339 | The MNP multicast group settings are unchanged.\r | |
8a67d61d | 340 | \r |
341 | **/\r | |
342 | EFI_STATUS\r | |
343 | EFIAPI\r | |
344 | MnpGroups (\r | |
345 | IN EFI_MANAGED_NETWORK_PROTOCOL *This,\r | |
346 | IN BOOLEAN JoinFlag,\r | |
347 | IN EFI_MAC_ADDRESS *MacAddress OPTIONAL\r | |
348 | )\r | |
349 | {\r | |
350 | MNP_INSTANCE_DATA *Instance;\r | |
351 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
352 | MNP_GROUP_CONTROL_BLOCK *GroupCtrlBlk;\r | |
353 | MNP_GROUP_ADDRESS *GroupAddress;\r | |
e48e37fc | 354 | LIST_ENTRY *ListEntry;\r |
8a67d61d | 355 | BOOLEAN AddressExist;\r |
356 | EFI_TPL OldTpl;\r | |
357 | EFI_STATUS Status;\r | |
358 | \r | |
359 | if (This == NULL || (JoinFlag && (MacAddress == NULL))) {\r | |
360 | //\r | |
361 | // This is NULL, or it's a join operation but MacAddress is NULL.\r | |
362 | //\r | |
363 | return EFI_INVALID_PARAMETER;\r | |
364 | }\r | |
365 | \r | |
366 | Instance = MNP_INSTANCE_DATA_FROM_THIS (This);\r | |
367 | SnpMode = Instance->MnpServiceData->Snp->Mode;\r | |
368 | \r | |
e48e37fc | 369 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
8a67d61d | 370 | \r |
371 | if (!Instance->Configured) {\r | |
372 | \r | |
373 | Status = EFI_NOT_STARTED;\r | |
374 | goto ON_EXIT;\r | |
375 | }\r | |
376 | \r | |
377 | if ((!Instance->ConfigData.EnableMulticastReceive) ||\r | |
378 | ((MacAddress != NULL) && !NET_MAC_IS_MULTICAST (MacAddress, &SnpMode->BroadcastAddress, SnpMode->HwAddressSize))) {\r | |
379 | //\r | |
380 | // The instance isn't configured to do mulitcast receive. OR\r | |
381 | // the passed in MacAddress is not a mutlticast mac address.\r | |
382 | //\r | |
383 | Status = EFI_INVALID_PARAMETER;\r | |
384 | goto ON_EXIT;\r | |
385 | }\r | |
386 | \r | |
387 | Status = EFI_SUCCESS;\r | |
388 | AddressExist = FALSE;\r | |
389 | GroupCtrlBlk = NULL;\r | |
390 | \r | |
391 | if (MacAddress != NULL) {\r | |
392 | //\r | |
393 | // Search the instance's GroupCtrlBlkList to find the specific address.\r | |
394 | //\r | |
395 | NET_LIST_FOR_EACH (ListEntry, &Instance->GroupCtrlBlkList) {\r | |
396 | \r | |
397 | GroupCtrlBlk = NET_LIST_USER_STRUCT (\r | |
398 | ListEntry,\r | |
399 | MNP_GROUP_CONTROL_BLOCK,\r | |
400 | CtrlBlkEntry\r | |
401 | );\r | |
402 | GroupAddress = GroupCtrlBlk->GroupAddress;\r | |
e48e37fc | 403 | if (0 == CompareMem (\r |
8a67d61d | 404 | MacAddress,\r |
405 | &GroupAddress->Address,\r | |
406 | SnpMode->HwAddressSize\r | |
407 | )) {\r | |
408 | //\r | |
409 | // There is already the same multicast mac address configured.\r | |
410 | //\r | |
411 | AddressExist = TRUE;\r | |
412 | break;\r | |
413 | }\r | |
414 | }\r | |
415 | \r | |
416 | if (JoinFlag && AddressExist) {\r | |
417 | //\r | |
418 | // The multicast mac address to join already exists.\r | |
419 | //\r | |
420 | Status = EFI_ALREADY_STARTED;\r | |
421 | }\r | |
422 | \r | |
423 | if (!JoinFlag && !AddressExist) {\r | |
424 | //\r | |
425 | // The multicast mac address to leave doesn't exist in this instance.\r | |
426 | //\r | |
427 | Status = EFI_NOT_FOUND;\r | |
428 | }\r | |
429 | \r | |
430 | if (EFI_ERROR (Status)) {\r | |
431 | goto ON_EXIT;\r | |
432 | }\r | |
e48e37fc | 433 | } else if (IsListEmpty (&Instance->GroupCtrlBlkList)) {\r |
8a67d61d | 434 | //\r |
435 | // The MacAddress is NULL and there is no configured multicast mac address,\r | |
436 | // just return.\r | |
437 | //\r | |
438 | goto ON_EXIT;\r | |
439 | }\r | |
440 | \r | |
441 | //\r | |
442 | // OK, it is time to take action.\r | |
443 | //\r | |
444 | Status = MnpGroupOp (Instance, JoinFlag, MacAddress, GroupCtrlBlk);\r | |
445 | \r | |
446 | ON_EXIT:\r | |
e48e37fc | 447 | gBS->RestoreTPL (OldTpl);\r |
8a67d61d | 448 | \r |
449 | return Status;\r | |
450 | }\r | |
451 | \r | |
8a67d61d | 452 | /**\r |
b6c4ecad | 453 | Places asynchronous outgoing data packets into the transmit queue.\r |
454 | \r | |
455 | The Transmit() function places a completion token into the transmit packet \r | |
456 | queue. This function is always asynchronous.\r | |
457 | The caller must fill in the Token.Event and Token.TxData fields in the\r | |
458 | completion token, and these fields cannot be NULL. When the transmit operation\r | |
459 | completes, the MNP updates the Token.Status field and the Token.Event is\r | |
460 | signaled.\r | |
461 | Note: There may be a performance penalty if the packet needs to be\r | |
462 | defragmented before it can be transmitted by the network device. Systems in\r | |
463 | which performance is critical should review the requirements and features of\r | |
464 | the underlying communications device and drivers.\r | |
465 | \r | |
466 | \r | |
467 | @param This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.\r | |
468 | @param Token Pointer to a token associated with the transmit data\r | |
469 | descriptor. Type EFI_MANAGED_NETWORK_COMPLETION_TOKEN is\r | |
470 | defined in "Related Definitions" below.\r | |
471 | \r | |
472 | @retval EFI_SUCCESS The transmit completion token was cached.\r | |
8a67d61d | 473 | @retval EFI_NOT_STARTED This MNP child driver instance has not been\r |
474 | configured.\r | |
b6c4ecad | 475 | @retval EFI_INVALID_PARAMETER One or more of the following conditions is\r |
476 | TRUE:\r | |
477 | * This is NULL.\r | |
478 | * Token is NULL.\r | |
479 | * Token.Event is NULL.\r | |
480 | * Token.TxData is NULL.\r | |
481 | * Token.TxData.DestinationAddress is not\r | |
482 | NULL and Token.TxData.HeaderLength is zero.\r | |
483 | * Token.TxData.FragmentCount is zero.\r | |
484 | * (Token.TxData.HeaderLength +\r | |
485 | Token.TxData.DataLength) is not equal to the\r | |
486 | sum of the\r | |
487 | Token.TxData.FragmentTable[].FragmentLength\r | |
488 | fields.\r | |
489 | * One or more of the\r | |
490 | Token.TxData.FragmentTable[].FragmentLength\r | |
491 | fields is zero.\r | |
492 | * One or more of the\r | |
493 | Token.TxData.FragmentTable[].FragmentBufferfields\r | |
494 | is NULL.\r | |
495 | * Token.TxData.DataLength is greater than MTU.\r | |
8a67d61d | 496 | @retval EFI_ACCESS_DENIED The transmit completion token is already in the\r |
497 | transmit queue.\r | |
498 | @retval EFI_OUT_OF_RESOURCES The transmit data could not be queued due to a\r | |
b6c4ecad | 499 | lack of system resources (usually memory). \r |
8a67d61d | 500 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.\r |
501 | The MNP child driver instance has been reset to\r | |
502 | startup defaults.\r | |
503 | @retval EFI_NOT_READY The transmit request could not be queued because\r | |
504 | the transmit queue is full.\r | |
505 | \r | |
506 | **/\r | |
507 | EFI_STATUS\r | |
508 | EFIAPI\r | |
509 | MnpTransmit (\r | |
510 | IN EFI_MANAGED_NETWORK_PROTOCOL *This,\r | |
511 | IN EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token\r | |
512 | )\r | |
513 | {\r | |
514 | EFI_STATUS Status;\r | |
515 | MNP_INSTANCE_DATA *Instance;\r | |
516 | MNP_SERVICE_DATA *MnpServiceData;\r | |
517 | UINT8 *PktBuf;\r | |
518 | UINT32 PktLen;\r | |
519 | EFI_TPL OldTpl;\r | |
520 | \r | |
521 | if ((This == NULL) || (Token == NULL)) {\r | |
522 | \r | |
523 | return EFI_INVALID_PARAMETER;\r | |
524 | }\r | |
525 | \r | |
526 | Instance = MNP_INSTANCE_DATA_FROM_THIS (This);\r | |
527 | \r | |
e48e37fc | 528 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
8a67d61d | 529 | \r |
530 | if (!Instance->Configured) {\r | |
531 | \r | |
532 | Status = EFI_NOT_STARTED;\r | |
533 | goto ON_EXIT;\r | |
534 | }\r | |
535 | \r | |
536 | if (!MnpIsValidTxToken (Instance, Token)) {\r | |
537 | //\r | |
538 | // The Token is invalid.\r | |
539 | //\r | |
540 | Status = EFI_INVALID_PARAMETER;\r | |
541 | goto ON_EXIT;\r | |
542 | }\r | |
543 | \r | |
544 | MnpServiceData = Instance->MnpServiceData;\r | |
545 | NET_CHECK_SIGNATURE (MnpServiceData, MNP_SERVICE_DATA_SIGNATURE);\r | |
546 | \r | |
547 | //\r | |
548 | // Build the tx packet\r | |
549 | //\r | |
550 | MnpBuildTxPacket (MnpServiceData, Token->Packet.TxData, &PktBuf, &PktLen);\r | |
551 | \r | |
552 | //\r | |
553 | // OK, send the packet synchronously.\r | |
554 | //\r | |
555 | Status = MnpSyncSendPacket (MnpServiceData, PktBuf, PktLen, Token);\r | |
556 | \r | |
557 | ON_EXIT:\r | |
e48e37fc | 558 | gBS->RestoreTPL (OldTpl);\r |
8a67d61d | 559 | \r |
560 | return Status;\r | |
561 | }\r | |
562 | \r | |
563 | \r | |
564 | /**\r | |
b6c4ecad | 565 | Places an asynchronous receiving request into the receiving queue.\r |
566 | \r | |
567 | The Receive() function places a completion token into the receive packet \r | |
568 | queue. This function is always asynchronous.\r | |
569 | The caller must fill in the Token.Event field in the completion token, and\r | |
570 | this field cannot be NULL. When the receive operation completes, the MNP\r | |
571 | updates the Token.Status and Token.RxData fields and the Token.Event is\r | |
572 | signaled.\r | |
573 | \r | |
574 | @param This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.\r | |
575 | @param Token Pointer to a token associated with the receive\r | |
576 | data descriptor. Type\r | |
577 | EFI_MANAGED_NETWORK_COMPLETION_TOKEN is defined in\r | |
578 | EFI_MANAGED_NETWORK_PROTOCOL.Transmit().\r | |
8a67d61d | 579 | \r |
580 | @retval EFI_SUCCESS The receive completion token was cached.\r | |
581 | @retval EFI_NOT_STARTED This MNP child driver instance has not been\r | |
582 | configured.\r | |
b6c4ecad | 583 | @retval EFI_INVALID_PARAMETER One or more of the following conditions is\r |
584 | TRUE:\r | |
585 | * This is NULL.\r | |
586 | * Token is NULL.\r | |
587 | * Token.Event is NULL\r | |
8a67d61d | 588 | @retval EFI_OUT_OF_RESOURCES The transmit data could not be queued due to a\r |
589 | lack of system resources (usually memory).\r | |
590 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.\r | |
591 | The MNP child driver instance has been reset to\r | |
592 | startup defaults.\r | |
593 | @retval EFI_ACCESS_DENIED The receive completion token was already in the\r | |
594 | receive queue.\r | |
595 | @retval EFI_NOT_READY The receive request could not be queued because\r | |
596 | the receive queue is full.\r | |
597 | \r | |
598 | **/\r | |
599 | EFI_STATUS\r | |
600 | EFIAPI\r | |
601 | MnpReceive (\r | |
602 | IN EFI_MANAGED_NETWORK_PROTOCOL *This,\r | |
603 | IN EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token\r | |
604 | )\r | |
605 | {\r | |
606 | EFI_STATUS Status;\r | |
607 | MNP_INSTANCE_DATA *Instance;\r | |
608 | EFI_TPL OldTpl;\r | |
609 | \r | |
610 | if ((This == NULL) || (Token == NULL) || (Token->Event == NULL)) {\r | |
611 | \r | |
612 | return EFI_INVALID_PARAMETER;\r | |
613 | }\r | |
614 | \r | |
615 | Instance = MNP_INSTANCE_DATA_FROM_THIS (This);\r | |
616 | \r | |
e48e37fc | 617 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
8a67d61d | 618 | \r |
619 | if (!Instance->Configured) {\r | |
620 | \r | |
621 | Status = EFI_NOT_STARTED;\r | |
622 | goto ON_EXIT;\r | |
623 | }\r | |
624 | \r | |
625 | //\r | |
626 | // Check whether this token(event) is already in the rx token queue.\r | |
627 | //\r | |
628 | Status = NetMapIterate (&Instance->RxTokenMap, MnpTokenExist, (VOID *) Token);\r | |
629 | if (EFI_ERROR (Status)) {\r | |
630 | \r | |
631 | goto ON_EXIT;\r | |
632 | }\r | |
633 | \r | |
634 | //\r | |
635 | // Insert the Token into the RxTokenMap.\r | |
636 | //\r | |
637 | Status = NetMapInsertTail (&Instance->RxTokenMap, (VOID *) Token, NULL);\r | |
638 | \r | |
639 | if (!EFI_ERROR (Status)) {\r | |
640 | //\r | |
641 | // Try to deliver any buffered packets.\r | |
642 | //\r | |
643 | Status = MnpInstanceDeliverPacket (Instance);\r | |
36ee91ca | 644 | \r |
645 | //\r | |
646 | // Dispatch the DPC queued by the NotifyFunction of Token->Event.\r | |
647 | //\r | |
648 | NetLibDispatchDpc ();\r | |
8a67d61d | 649 | }\r |
650 | \r | |
651 | ON_EXIT:\r | |
e48e37fc | 652 | gBS->RestoreTPL (OldTpl);\r |
8a67d61d | 653 | \r |
654 | return Status;\r | |
655 | }\r | |
656 | \r | |
8a67d61d | 657 | /**\r |
b6c4ecad | 658 | Aborts an asynchronous transmit or receive request. \r |
659 | \r | |
660 | The Cancel() function is used to abort a pending transmit or receive request.\r | |
661 | If the token is in the transmit or receive request queues, after calling this\r | |
662 | function, Token.Status will be set to EFI_ABORTED and then Token.Event will be\r | |
663 | signaled. If the token is not in one of the queues, which usually means that\r | |
664 | the asynchronous operation has completed, this function will not signal the\r | |
665 | token and EFI_NOT_FOUND is returned.\r | |
666 | \r | |
667 | @param This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.\r | |
668 | @param Token Pointer to a token that has been issued by\r | |
669 | EFI_MANAGED_NETWORK_PROTOCOL.Transmit() or\r | |
670 | EFI_MANAGED_NETWORK_PROTOCOL.Receive(). If NULL, all pending\r | |
671 | tokens are aborted.\r | |
8a67d61d | 672 | \r |
673 | @retval EFI_SUCCESS The asynchronous I/O request was aborted and\r | |
b6c4ecad | 674 | Token.Event was signaled. When Token is NULL,\r |
675 | all pending requests were aborted and their\r | |
676 | events were signaled.\r | |
8a67d61d | 677 | @retval EFI_NOT_STARTED This MNP child driver instance has not been\r |
678 | configured.\r | |
679 | @retval EFI_INVALID_PARAMETER This is NULL.\r | |
b6c4ecad | 680 | @retval EFI_NOT_FOUND When Token is not NULL, the asynchronous I/O\r |
681 | request was not found in the transmit or\r | |
682 | receive queue. It has either completed or was\r | |
683 | not issued by Transmit() and Receive().\r | |
8a67d61d | 684 | \r |
685 | **/\r | |
686 | EFI_STATUS\r | |
687 | EFIAPI\r | |
688 | MnpCancel (\r | |
689 | IN EFI_MANAGED_NETWORK_PROTOCOL *This,\r | |
690 | IN EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token OPTIONAL\r | |
691 | )\r | |
692 | {\r | |
693 | EFI_STATUS Status;\r | |
694 | MNP_INSTANCE_DATA *Instance;\r | |
695 | EFI_TPL OldTpl;\r | |
696 | \r | |
697 | if (This == NULL) {\r | |
698 | \r | |
699 | return EFI_INVALID_PARAMETER;\r | |
700 | }\r | |
701 | \r | |
702 | Instance = MNP_INSTANCE_DATA_FROM_THIS (This);\r | |
703 | \r | |
e48e37fc | 704 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
8a67d61d | 705 | \r |
706 | if (!Instance->Configured) {\r | |
707 | \r | |
708 | Status = EFI_NOT_STARTED;\r | |
709 | goto ON_EXIT;\r | |
710 | }\r | |
711 | \r | |
712 | //\r | |
713 | // Iterate the RxTokenMap to cancel the specified Token.\r | |
714 | //\r | |
715 | Status = NetMapIterate (&Instance->RxTokenMap, MnpCancelTokens, (VOID *) Token);\r | |
716 | \r | |
717 | if (Token != NULL) {\r | |
718 | \r | |
719 | Status = (Status == EFI_ABORTED) ? EFI_SUCCESS : EFI_NOT_FOUND;\r | |
720 | }\r | |
721 | \r | |
36ee91ca | 722 | //\r |
723 | // Dispatch the DPC queued by the NotifyFunction of the cancled token's events.\r | |
724 | //\r | |
725 | NetLibDispatchDpc ();\r | |
726 | \r | |
8a67d61d | 727 | ON_EXIT:\r |
e48e37fc | 728 | gBS->RestoreTPL (OldTpl);\r |
8a67d61d | 729 | \r |
730 | return Status;\r | |
731 | }\r | |
732 | \r | |
8a67d61d | 733 | /**\r |
b6c4ecad | 734 | Polls for incoming data packets and processes outgoing data packets. \r |
735 | \r | |
736 | The Poll() function can be used by network drivers and applications to \r | |
737 | increase the rate that data packets are moved between the communications\r | |
738 | device and the transmit and receive queues.\r | |
739 | Normally, a periodic timer event internally calls the Poll() function. But, in\r | |
740 | some systems, the periodic timer event may not call Poll() fast enough to\r | |
741 | transmit and/or receive all data packets without missing packets. Drivers and\r | |
742 | applications that are experiencing packet loss should try calling the Poll()\r | |
743 | function more often.\r | |
744 | \r | |
745 | @param This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.\r | |
746 | \r | |
747 | @retval EFI_SUCCESS Incoming or outgoing data was processed.\r | |
748 | @retval EFI_NOT_STARTED This MNP child driver instance has not been\r | |
749 | configured.\r | |
750 | @retval EFI_DEVICE_ERROR An unexpected system or network error occurred. The\r | |
751 | MNP child driver instance has been reset to startup\r | |
752 | defaults.\r | |
753 | @retval EFI_NOT_READY No incoming or outgoing data was processed. Consider\r | |
754 | increasing the polling rate.\r | |
755 | @retval EFI_TIMEOUT Data was dropped out of the transmit and/or receive\r | |
756 | queue. Consider increasing the polling rate.\r | |
8a67d61d | 757 | \r |
758 | **/\r | |
759 | EFI_STATUS\r | |
760 | EFIAPI\r | |
761 | MnpPoll (\r | |
762 | IN EFI_MANAGED_NETWORK_PROTOCOL *This\r | |
763 | )\r | |
764 | {\r | |
765 | EFI_STATUS Status;\r | |
766 | MNP_INSTANCE_DATA *Instance;\r | |
767 | EFI_TPL OldTpl;\r | |
768 | \r | |
769 | if (This == NULL) {\r | |
770 | return EFI_INVALID_PARAMETER;\r | |
771 | }\r | |
772 | \r | |
773 | Instance = MNP_INSTANCE_DATA_FROM_THIS (This);\r | |
774 | \r | |
e48e37fc | 775 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
8a67d61d | 776 | \r |
777 | if (!Instance->Configured) {\r | |
778 | Status = EFI_NOT_STARTED;\r | |
779 | goto ON_EXIT;\r | |
780 | }\r | |
781 | \r | |
782 | //\r | |
783 | // Try to receive packets.\r | |
784 | //\r | |
785 | Status = MnpReceivePacket (Instance->MnpServiceData);\r | |
786 | \r | |
36ee91ca | 787 | NetLibDispatchDpc ();\r |
788 | \r | |
8a67d61d | 789 | ON_EXIT:\r |
e48e37fc | 790 | gBS->RestoreTPL (OldTpl);\r |
8a67d61d | 791 | \r |
792 | return Status;\r | |
793 | }\r | |
36ee91ca | 794 | \r |