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779ae357 | 1 | /** @file\r |
2 | VLAN Config Protocol implementation and VLAN packet process routine.\r | |
3 | \r | |
e5eed7d3 HT |
4 | Copyright (c) 2009, Intel Corporation. All rights reserved.<BR>\r |
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 | |
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 | |
14 | **/\r | |
15 | \r | |
16 | #include "MnpImpl.h"\r | |
17 | #include "MnpVlan.h"\r | |
18 | \r | |
19 | VLAN_DEVICE_PATH mVlanDevicePathTemplate = {\r | |
20 | {\r | |
21 | MESSAGING_DEVICE_PATH,\r | |
22 | MSG_VLAN_DP,\r | |
23 | {\r | |
24 | (UINT8) (sizeof (VLAN_DEVICE_PATH)),\r | |
25 | (UINT8) ((sizeof (VLAN_DEVICE_PATH)) >> 8)\r | |
26 | }\r | |
27 | },\r | |
28 | 0\r | |
29 | };\r | |
30 | \r | |
31 | EFI_VLAN_CONFIG_PROTOCOL mVlanConfigProtocolTemplate = {\r | |
32 | VlanConfigSet,\r | |
33 | VlanConfigFind,\r | |
34 | VlanConfigRemove\r | |
35 | };\r | |
36 | \r | |
37 | \r | |
38 | /**\r | |
39 | Create a child handle for the VLAN ID.\r | |
40 | \r | |
41 | @param[in] ImageHandle The driver image handle.\r | |
42 | @param[in] ControllerHandle Handle of device to bind driver to.\r | |
43 | @param[in] VlanId The VLAN ID.\r | |
44 | @param[out] Devicepath Pointer to returned device path for child handle.\r | |
45 | \r | |
46 | @return The handle of VLAN child or NULL if failed to create VLAN child.\r | |
47 | \r | |
48 | **/\r | |
49 | EFI_HANDLE\r | |
50 | MnpCreateVlanChild (\r | |
51 | IN EFI_HANDLE ImageHandle,\r | |
52 | IN EFI_HANDLE ControllerHandle,\r | |
53 | IN UINT16 VlanId,\r | |
54 | OUT EFI_DEVICE_PATH_PROTOCOL **Devicepath OPTIONAL\r | |
55 | )\r | |
56 | {\r | |
57 | EFI_HANDLE ChildHandle;\r | |
58 | VLAN_DEVICE_PATH VlanNode;\r | |
59 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
60 | EFI_DEVICE_PATH_PROTOCOL *VlanDevicePath;\r | |
61 | EFI_STATUS Status;\r | |
62 | \r | |
63 | //\r | |
64 | // Try to get parent device path\r | |
65 | //\r | |
66 | Status = gBS->OpenProtocol (\r | |
67 | ControllerHandle,\r | |
68 | &gEfiDevicePathProtocolGuid,\r | |
69 | (VOID **) &ParentDevicePath,\r | |
70 | ImageHandle,\r | |
71 | ControllerHandle,\r | |
72 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
73 | );\r | |
74 | if (EFI_ERROR (Status)) {\r | |
75 | return NULL;\r | |
76 | }\r | |
77 | \r | |
78 | //\r | |
79 | // Construct device path for child handle: MAC + VLAN\r | |
80 | //\r | |
81 | CopyMem (&VlanNode, &mVlanDevicePathTemplate, sizeof (VLAN_DEVICE_PATH));\r | |
82 | VlanNode.VlanId = VlanId;\r | |
83 | VlanDevicePath = AppendDevicePathNode (\r | |
84 | ParentDevicePath,\r | |
85 | (EFI_DEVICE_PATH_PROTOCOL *) &VlanNode\r | |
86 | );\r | |
87 | if (VlanDevicePath == NULL) {\r | |
88 | return NULL;\r | |
89 | }\r | |
90 | \r | |
91 | //\r | |
92 | // Create child VLAN handle by installing DevicePath protocol\r | |
93 | //\r | |
94 | ChildHandle = NULL;\r | |
95 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
96 | &ChildHandle,\r | |
97 | &gEfiDevicePathProtocolGuid,\r | |
98 | VlanDevicePath,\r | |
99 | NULL\r | |
100 | );\r | |
101 | if (EFI_ERROR (Status)) {\r | |
102 | FreePool (VlanDevicePath);\r | |
103 | return NULL;\r | |
104 | }\r | |
105 | \r | |
106 | if (Devicepath != NULL) {\r | |
107 | *Devicepath = VlanDevicePath;\r | |
108 | }\r | |
109 | \r | |
110 | return ChildHandle;\r | |
111 | }\r | |
112 | \r | |
113 | /**\r | |
114 | Remove VLAN tag from a packet.\r | |
115 | \r | |
116 | @param[in, out] MnpDeviceData Pointer to the mnp device context data.\r | |
117 | @param[in, out] Nbuf Pointer to the NET_BUF to remove VLAN tag.\r | |
118 | @param[out] VlanId Pointer to the returned VLAN ID.\r | |
119 | \r | |
120 | @retval TRUE VLAN tag is removed from this packet.\r | |
121 | @retval FALSE There is no VLAN tag in this packet.\r | |
122 | \r | |
123 | **/\r | |
124 | BOOLEAN\r | |
125 | MnpRemoveVlanTag (\r | |
126 | IN OUT MNP_DEVICE_DATA *MnpDeviceData,\r | |
127 | IN OUT NET_BUF *Nbuf,\r | |
128 | OUT UINT16 *VlanId\r | |
129 | )\r | |
130 | {\r | |
131 | UINT8 *Packet;\r | |
132 | UINTN ProtocolOffset;\r | |
133 | UINT16 ProtocolType;\r | |
134 | VLAN_TCI VlanTag;\r | |
135 | \r | |
136 | ProtocolOffset = MnpDeviceData->Snp->Mode->HwAddressSize * 2;\r | |
137 | \r | |
138 | //\r | |
139 | // Get the packet buffer.\r | |
140 | //\r | |
141 | Packet = NetbufGetByte (Nbuf, 0, NULL);\r | |
142 | ASSERT (Packet != NULL);\r | |
143 | \r | |
144 | //\r | |
145 | // Check whether this is VLAN tagged frame by Ether Type\r | |
146 | //\r | |
147 | *VlanId = 0;\r | |
148 | ProtocolType = NTOHS (*(UINT16 *) (Packet + ProtocolOffset));\r | |
149 | if (ProtocolType != ETHER_TYPE_VLAN) {\r | |
150 | //\r | |
151 | // Not a VLAN tagged frame\r | |
152 | //\r | |
153 | return FALSE;\r | |
154 | }\r | |
155 | \r | |
156 | VlanTag.Uint16 = NTOHS (*(UINT16 *) (Packet + ProtocolOffset + sizeof (ProtocolType)));\r | |
157 | *VlanId = VlanTag.Bits.Vid;\r | |
158 | \r | |
159 | //\r | |
160 | // Move hardware address (DA + SA) 4 bytes right to override VLAN tag\r | |
161 | //\r | |
162 | CopyMem (Packet + NET_VLAN_TAG_LEN, Packet, ProtocolOffset);\r | |
163 | \r | |
164 | //\r | |
165 | // Remove VLAN tag from the Nbuf\r | |
166 | //\r | |
167 | NetbufTrim (Nbuf, NET_VLAN_TAG_LEN, NET_BUF_HEAD);\r | |
168 | \r | |
169 | return TRUE;\r | |
170 | }\r | |
171 | \r | |
172 | \r | |
173 | /**\r | |
174 | Build the packet to transmit from the TxData passed in.\r | |
175 | \r | |
176 | @param MnpServiceData Pointer to the mnp service context data.\r | |
177 | @param TxData Pointer to the transmit data containing the\r | |
178 | information to build the packet.\r | |
179 | @param ProtocolType Pointer to the Ethernet protocol type.\r | |
180 | @param Packet Pointer to record the address of the packet.\r | |
181 | @param Length Pointer to a UINT32 variable used to record the\r | |
182 | packet's length.\r | |
183 | \r | |
184 | **/\r | |
185 | VOID\r | |
186 | MnpInsertVlanTag (\r | |
187 | IN MNP_SERVICE_DATA *MnpServiceData,\r | |
188 | IN EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData,\r | |
189 | OUT UINT16 *ProtocolType,\r | |
190 | IN OUT UINT8 **Packet,\r | |
191 | IN OUT UINT32 *Length\r | |
192 | )\r | |
193 | {\r | |
194 | VLAN_TCI *VlanTci;\r | |
195 | UINT16 *Tpid;\r | |
196 | UINT16 *EtherType;\r | |
197 | MNP_DEVICE_DATA *MnpDeviceData;\r | |
198 | EFI_SIMPLE_NETWORK_MODE *SnpMode;\r | |
199 | \r | |
200 | if (MnpServiceData->VlanId == 0) {\r | |
201 | *ProtocolType = TxData->ProtocolType;\r | |
202 | return ;\r | |
203 | }\r | |
204 | \r | |
205 | MnpDeviceData = MnpServiceData->MnpDeviceData;\r | |
206 | SnpMode = MnpDeviceData->Snp->Mode;\r | |
207 | \r | |
208 | *ProtocolType = ETHER_TYPE_VLAN;\r | |
209 | *Length = *Length + NET_VLAN_TAG_LEN;\r | |
210 | *Packet = *Packet - NET_VLAN_TAG_LEN;\r | |
211 | \r | |
212 | Tpid = (UINT16 *) (*Packet + SnpMode->MediaHeaderSize - sizeof (*ProtocolType));\r | |
213 | VlanTci = (VLAN_TCI *) (UINTN) (Tpid + 1);\r | |
214 | if (TxData->HeaderLength != 0) {\r | |
215 | //\r | |
216 | // Media header is in packet, move DA+SA 4 bytes left\r | |
217 | //\r | |
218 | CopyMem (\r | |
219 | *Packet,\r | |
220 | *Packet + NET_VLAN_TAG_LEN,\r | |
221 | SnpMode->MediaHeaderSize - sizeof (*ProtocolType)\r | |
222 | );\r | |
223 | *Tpid = HTONS (ETHER_TYPE_VLAN);\r | |
224 | } else {\r | |
225 | //\r | |
226 | // Media header not in packet, VLAN TCI and original protocol type becomes payload\r | |
227 | //\r | |
228 | EtherType = (UINT16 *) (UINTN) (VlanTci + 1);\r | |
229 | *EtherType = HTONS (TxData->ProtocolType);\r | |
230 | }\r | |
231 | \r | |
232 | VlanTci->Bits.Vid = MnpServiceData->VlanId;\r | |
233 | VlanTci->Bits.Cfi = VLAN_TCI_CFI_CANONICAL_MAC;\r | |
234 | VlanTci->Bits.Priority = MnpServiceData->Priority;\r | |
235 | VlanTci->Uint16 = HTONS (VlanTci->Uint16);\r | |
236 | }\r | |
237 | \r | |
238 | \r | |
239 | /**\r | |
240 | Get VLAN configuration variable.\r | |
241 | \r | |
242 | @param[in] MnpDeviceData Pointer to the MNP device context data.\r | |
243 | @param[out] NumberOfVlan Pointer to number of VLAN to be returned.\r | |
244 | @param[out] VlanVariable Pointer to the buffer to return requested\r | |
245 | array of VLAN_TCI.\r | |
246 | \r | |
247 | @retval EFI_SUCCESS The array of VLAN_TCI was returned in VlanVariable\r | |
248 | and number of VLAN was returned in NumberOfVlan.\r | |
249 | @retval EFI_NOT_FOUND VLAN configuration variable not found.\r | |
250 | @retval EFI_OUT_OF_RESOURCES There is not enough pool memory to store the configuration.\r | |
251 | \r | |
252 | **/\r | |
253 | EFI_STATUS\r | |
254 | MnpGetVlanVariable (\r | |
255 | IN MNP_DEVICE_DATA *MnpDeviceData,\r | |
256 | OUT UINTN *NumberOfVlan,\r | |
257 | OUT VLAN_TCI **VlanVariable\r | |
258 | )\r | |
259 | {\r | |
260 | UINTN BufferSize;\r | |
261 | EFI_STATUS Status;\r | |
262 | VLAN_TCI *Buffer;\r | |
263 | \r | |
264 | //\r | |
265 | // Get VLAN configuration from EFI Variable\r | |
266 | //\r | |
267 | Buffer = NULL;\r | |
268 | BufferSize = 0;\r | |
269 | Status = gRT->GetVariable (\r | |
270 | MnpDeviceData->MacString,\r | |
271 | &gEfiVlanConfigProtocolGuid,\r | |
272 | NULL,\r | |
273 | &BufferSize,\r | |
274 | NULL\r | |
275 | );\r | |
276 | if (Status != EFI_BUFFER_TOO_SMALL) {\r | |
277 | return EFI_NOT_FOUND;\r | |
278 | }\r | |
279 | \r | |
280 | //\r | |
281 | // Allocate buffer to read the variable\r | |
282 | //\r | |
283 | Buffer = AllocateZeroPool (BufferSize);\r | |
284 | if (Buffer == NULL) {\r | |
285 | return EFI_OUT_OF_RESOURCES;\r | |
286 | }\r | |
287 | \r | |
288 | Status = gRT->GetVariable (\r | |
289 | MnpDeviceData->MacString,\r | |
290 | &gEfiVlanConfigProtocolGuid,\r | |
291 | NULL,\r | |
292 | &BufferSize,\r | |
293 | Buffer\r | |
294 | );\r | |
295 | if (EFI_ERROR (Status)) {\r | |
296 | FreePool (Buffer);\r | |
297 | return Status;\r | |
298 | }\r | |
299 | \r | |
300 | *NumberOfVlan = BufferSize / sizeof (VLAN_TCI);\r | |
301 | *VlanVariable = Buffer;\r | |
302 | \r | |
303 | return Status;\r | |
304 | }\r | |
305 | \r | |
306 | \r | |
307 | /**\r | |
308 | Set VLAN configuration variable.\r | |
309 | \r | |
310 | @param[in] MnpDeviceData Pointer to the MNP device context data.\r | |
311 | @param[in] NumberOfVlan Number of VLAN in array VlanVariable.\r | |
312 | @param[in] VlanVariable Pointer to array of VLAN_TCI.\r | |
313 | \r | |
314 | @retval EFI_SUCCESS The VLAN variable is successfully set.\r | |
315 | @retval EFI_OUT_OF_RESOURCES There is not enough resource to set the configuration.\r | |
316 | \r | |
317 | **/\r | |
318 | EFI_STATUS\r | |
319 | MnpSetVlanVariable (\r | |
320 | IN MNP_DEVICE_DATA *MnpDeviceData,\r | |
321 | IN UINTN NumberOfVlan,\r | |
322 | IN VLAN_TCI *VlanVariable\r | |
323 | )\r | |
324 | {\r | |
325 | return gRT->SetVariable (\r | |
326 | MnpDeviceData->MacString,\r | |
327 | &gEfiVlanConfigProtocolGuid,\r | |
328 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
329 | NumberOfVlan * sizeof (VLAN_TCI),\r | |
330 | VlanVariable\r | |
331 | );\r | |
332 | }\r | |
333 | \r | |
334 | \r | |
335 | /**\r | |
336 | Create a VLAN device or modify the configuration parameter of an\r | |
337 | already-configured VLAN.\r | |
338 | \r | |
339 | The Set() function is used to create a new VLAN device or change the VLAN\r | |
340 | configuration parameters. If the VlanId hasn't been configured in the\r | |
341 | physical Ethernet device, a new VLAN device will be created. If a VLAN with\r | |
342 | this VlanId is already configured, then related configuration will be updated\r | |
343 | as the input parameters.\r | |
344 | \r | |
345 | If VlanId is zero, the VLAN device will send and receive untagged frames.\r | |
346 | Otherwise, the VLAN device will send and receive VLAN-tagged frames containing the VlanId.\r | |
347 | If VlanId is out of scope of (0-4094), EFI_INVALID_PARAMETER is returned.\r | |
348 | If Priority is out of the scope of (0-7), then EFI_INVALID_PARAMETER is returned.\r | |
349 | If there is not enough system memory to perform the registration, then\r | |
350 | EFI_OUT_OF_RESOURCES is returned.\r | |
351 | \r | |
352 | @param[in] This Points to the EFI_VLAN_CONFIG_PROTOCOL.\r | |
353 | @param[in] VlanId A unique identifier (1-4094) of the VLAN which is being created\r | |
354 | or modified, or zero (0).\r | |
355 | @param[in] Priority 3 bit priority in VLAN header. Priority 0 is default value. If\r | |
356 | VlanId is zero (0), Priority is ignored.\r | |
357 | \r | |
358 | @retval EFI_SUCCESS The VLAN is successfully configured.\r | |
359 | @retval EFI_INVALID_PARAMETER One or more of following conditions is TRUE:\r | |
360 | - This is NULL.\r | |
361 | - VlanId is an invalid VLAN Identifier.\r | |
362 | - Priority is invalid.\r | |
363 | @retval EFI_OUT_OF_RESOURCES There is not enough system memory to perform the registration.\r | |
364 | \r | |
365 | **/\r | |
366 | EFI_STATUS\r | |
367 | EFIAPI\r | |
368 | VlanConfigSet (\r | |
369 | IN EFI_VLAN_CONFIG_PROTOCOL *This,\r | |
370 | IN UINT16 VlanId,\r | |
371 | IN UINT8 Priority\r | |
372 | )\r | |
373 | {\r | |
374 | EFI_STATUS Status;\r | |
375 | MNP_DEVICE_DATA *MnpDeviceData;\r | |
376 | MNP_SERVICE_DATA *MnpServiceData;\r | |
377 | VLAN_TCI *OldVariable;\r | |
378 | VLAN_TCI *NewVariable;\r | |
379 | UINTN NumberOfVlan;\r | |
380 | UINTN Index;\r | |
381 | BOOLEAN IsAdd;\r | |
382 | LIST_ENTRY *Entry;\r | |
383 | \r | |
384 | if ((This == NULL) || (VlanId > 4094) || (Priority > 7)) {\r | |
385 | return EFI_INVALID_PARAMETER;\r | |
386 | }\r | |
387 | \r | |
388 | IsAdd = FALSE;\r | |
389 | MnpDeviceData = MNP_DEVICE_DATA_FROM_THIS (This);\r | |
390 | if (MnpDeviceData->NumberOfVlan == 0) {\r | |
391 | //\r | |
392 | // No existing VLAN, this is the first VLAN to add\r | |
393 | //\r | |
394 | IsAdd = TRUE;\r | |
395 | Entry = GetFirstNode (&MnpDeviceData->ServiceList);\r | |
396 | MnpServiceData = MNP_SERVICE_DATA_FROM_LINK (Entry);\r | |
397 | \r | |
398 | if (VlanId != 0) {\r | |
399 | //\r | |
400 | // VlanId is not 0, need destroy the default MNP service data\r | |
401 | //\r | |
402 | Status = MnpDestroyServiceChild (MnpServiceData);\r | |
403 | if (EFI_ERROR (Status)) {\r | |
404 | return Status;\r | |
405 | }\r | |
406 | \r | |
407 | Status = MnpDestroyServiceData (MnpServiceData);\r | |
408 | if (EFI_ERROR (Status)) {\r | |
409 | return Status;\r | |
410 | }\r | |
411 | \r | |
412 | //\r | |
413 | // Create a new MNP service data for this VLAN\r | |
414 | //\r | |
415 | MnpServiceData = MnpCreateServiceData (MnpDeviceData, VlanId, Priority);\r | |
416 | if (MnpServiceData == NULL) {\r | |
417 | return EFI_OUT_OF_RESOURCES;\r | |
418 | }\r | |
419 | }\r | |
420 | } else {\r | |
421 | //\r | |
422 | // Try to find VlanId in existing VLAN list\r | |
423 | //\r | |
424 | MnpServiceData = MnpFindServiceData (MnpDeviceData, VlanId);\r | |
425 | if (MnpServiceData == NULL) {\r | |
426 | //\r | |
427 | // VlanId not found, create a new MNP service data\r | |
428 | //\r | |
429 | IsAdd = TRUE;\r | |
430 | MnpServiceData = MnpCreateServiceData (MnpDeviceData, VlanId, Priority);\r | |
431 | if (MnpServiceData == NULL) {\r | |
432 | return EFI_OUT_OF_RESOURCES;\r | |
433 | }\r | |
434 | }\r | |
435 | }\r | |
436 | \r | |
437 | MnpServiceData->VlanId = VlanId;\r | |
438 | MnpServiceData->Priority = Priority;\r | |
439 | if (IsAdd) {\r | |
440 | MnpDeviceData->NumberOfVlan++;\r | |
441 | }\r | |
442 | \r | |
443 | //\r | |
444 | // Update VLAN configuration variable\r | |
445 | //\r | |
446 | OldVariable = NULL;\r | |
447 | NewVariable = NULL;\r | |
448 | NumberOfVlan = 0;\r | |
449 | MnpGetVlanVariable (MnpDeviceData, &NumberOfVlan, &OldVariable);\r | |
450 | \r | |
451 | if (IsAdd) {\r | |
452 | //\r | |
453 | // VLAN not exist - add\r | |
454 | //\r | |
455 | NewVariable = AllocateZeroPool ((NumberOfVlan + 1) * sizeof (VLAN_TCI));\r | |
456 | if (NewVariable == NULL) {\r | |
457 | Status = EFI_OUT_OF_RESOURCES;\r | |
458 | goto Exit;\r | |
459 | }\r | |
460 | \r | |
461 | if (OldVariable != NULL) {\r | |
462 | CopyMem (NewVariable, OldVariable, NumberOfVlan * sizeof (VLAN_TCI));\r | |
463 | }\r | |
464 | \r | |
465 | Index = NumberOfVlan++;\r | |
466 | } else {\r | |
467 | //\r | |
468 | // VLAN already exist - update\r | |
469 | //\r | |
470 | for (Index = 0; Index < NumberOfVlan; Index++) {\r | |
471 | if (OldVariable[Index].Bits.Vid == VlanId) {\r | |
472 | break;\r | |
473 | }\r | |
474 | }\r | |
475 | ASSERT (Index < NumberOfVlan);\r | |
476 | \r | |
477 | NewVariable = OldVariable;\r | |
478 | OldVariable = NULL;\r | |
479 | }\r | |
480 | \r | |
481 | NewVariable[Index].Bits.Vid = VlanId;\r | |
482 | NewVariable[Index].Bits.Priority = Priority;\r | |
483 | \r | |
484 | Status = MnpSetVlanVariable (MnpDeviceData, NumberOfVlan, NewVariable);\r | |
485 | FreePool (NewVariable);\r | |
486 | \r | |
487 | Exit:\r | |
488 | if (OldVariable != NULL) {\r | |
489 | FreePool (OldVariable);\r | |
490 | }\r | |
491 | \r | |
492 | return Status;\r | |
493 | }\r | |
494 | \r | |
495 | \r | |
496 | /**\r | |
497 | Find configuration information for specified VLAN or all configured VLANs.\r | |
498 | \r | |
499 | The Find() function is used to find the configuration information for matching\r | |
500 | VLAN and allocate a buffer into which those entries are copied.\r | |
501 | \r | |
502 | @param[in] This Points to the EFI_VLAN_CONFIG_PROTOCOL.\r | |
503 | @param[in] VlanId Pointer to VLAN identifier. Set to NULL to find all\r | |
504 | configured VLANs.\r | |
505 | @param[out] NumberOfVlan The number of VLANs which is found by the specified criteria.\r | |
506 | @param[out] Entries The buffer which receive the VLAN configuration.\r | |
507 | \r | |
508 | @retval EFI_SUCCESS The VLAN is successfully found.\r | |
509 | @retval EFI_INVALID_PARAMETER One or more of following conditions is TRUE:\r | |
510 | - This is NULL.\r | |
511 | - Specified VlanId is invalid.\r | |
512 | @retval EFI_NOT_FOUND No matching VLAN is found.\r | |
513 | \r | |
514 | **/\r | |
515 | EFI_STATUS\r | |
516 | EFIAPI\r | |
517 | VlanConfigFind (\r | |
518 | IN EFI_VLAN_CONFIG_PROTOCOL *This,\r | |
519 | IN UINT16 *VlanId OPTIONAL,\r | |
520 | OUT UINT16 *NumberOfVlan,\r | |
521 | OUT EFI_VLAN_FIND_DATA **Entries\r | |
522 | )\r | |
523 | {\r | |
524 | MNP_DEVICE_DATA *MnpDeviceData;\r | |
525 | MNP_SERVICE_DATA *MnpServiceData;\r | |
526 | LIST_ENTRY *Entry;\r | |
527 | EFI_VLAN_FIND_DATA *VlanData;\r | |
528 | \r | |
529 | if ((This == NULL) || (VlanId != NULL && *VlanId > 4094) || (NumberOfVlan == NULL) || (Entries == NULL)) {\r | |
530 | return EFI_INVALID_PARAMETER;\r | |
531 | }\r | |
532 | \r | |
533 | *NumberOfVlan = 0;\r | |
534 | *Entries = NULL;\r | |
535 | \r | |
536 | MnpDeviceData = MNP_DEVICE_DATA_FROM_THIS (This);\r | |
537 | if (MnpDeviceData->NumberOfVlan == 0) {\r | |
538 | return EFI_NOT_FOUND;\r | |
539 | }\r | |
540 | \r | |
541 | if (VlanId == NULL) {\r | |
542 | //\r | |
543 | // Return all current VLAN configuration\r | |
544 | //\r | |
545 | *NumberOfVlan = (UINT16) MnpDeviceData->NumberOfVlan;\r | |
546 | VlanData = AllocateZeroPool (*NumberOfVlan * sizeof (EFI_VLAN_FIND_DATA));\r | |
547 | if (VlanData == NULL) {\r | |
548 | return EFI_OUT_OF_RESOURCES;\r | |
549 | }\r | |
550 | \r | |
551 | *Entries = VlanData;\r | |
552 | NET_LIST_FOR_EACH (Entry, &MnpDeviceData->ServiceList) {\r | |
553 | MnpServiceData = MNP_SERVICE_DATA_FROM_LINK (Entry);\r | |
554 | \r | |
555 | VlanData->VlanId = MnpServiceData->VlanId;\r | |
556 | VlanData->Priority = MnpServiceData->Priority;\r | |
557 | VlanData++;\r | |
558 | }\r | |
559 | \r | |
560 | return EFI_SUCCESS;\r | |
561 | }\r | |
562 | \r | |
563 | //\r | |
564 | // VlanId is specified, try to find it in current VLAN list\r | |
565 | //\r | |
566 | MnpServiceData = MnpFindServiceData (MnpDeviceData, *VlanId);\r | |
567 | if (MnpServiceData == NULL) {\r | |
568 | return EFI_NOT_FOUND;\r | |
569 | }\r | |
570 | \r | |
571 | VlanData = AllocateZeroPool (sizeof (EFI_VLAN_FIND_DATA));\r | |
572 | if (VlanData == NULL) {\r | |
573 | return EFI_OUT_OF_RESOURCES;\r | |
574 | }\r | |
575 | VlanData->VlanId = MnpServiceData->VlanId;\r | |
576 | VlanData->Priority = MnpServiceData->Priority;\r | |
577 | \r | |
578 | *NumberOfVlan = 1;\r | |
579 | *Entries = VlanData;\r | |
580 | \r | |
581 | return EFI_SUCCESS;\r | |
582 | }\r | |
583 | \r | |
584 | \r | |
585 | /**\r | |
586 | Remove the configured VLAN device.\r | |
587 | \r | |
588 | The Remove() function is used to remove the specified VLAN device.\r | |
589 | If the VlanId is out of the scope of (0-4094), EFI_INVALID_PARAMETER is returned.\r | |
590 | If specified VLAN hasn't been previously configured, EFI_NOT_FOUND is returned.\r | |
591 | \r | |
592 | @param[in] This Points to the EFI_VLAN_CONFIG_PROTOCOL.\r | |
593 | @param[in] VlanId Identifier (0-4094) of the VLAN to be removed.\r | |
594 | \r | |
595 | @retval EFI_SUCCESS The VLAN is successfully removed.\r | |
596 | @retval EFI_INVALID_PARAMETER One or more of following conditions is TRUE:\r | |
597 | - This is NULL.\r | |
598 | - VlanId is an invalid parameter.\r | |
599 | @retval EFI_NOT_FOUND The to-be-removed VLAN does not exist.\r | |
600 | \r | |
601 | **/\r | |
602 | EFI_STATUS\r | |
603 | EFIAPI\r | |
604 | VlanConfigRemove (\r | |
605 | IN EFI_VLAN_CONFIG_PROTOCOL *This,\r | |
606 | IN UINT16 VlanId\r | |
607 | )\r | |
608 | {\r | |
609 | EFI_STATUS Status;\r | |
610 | MNP_DEVICE_DATA *MnpDeviceData;\r | |
611 | MNP_SERVICE_DATA *MnpServiceData;\r | |
612 | LIST_ENTRY *Entry;\r | |
613 | VLAN_TCI *VlanVariable;\r | |
614 | VLAN_TCI *VlanData;\r | |
615 | \r | |
616 | if ((This == NULL) || (VlanId > 4094)) {\r | |
617 | return EFI_INVALID_PARAMETER;\r | |
618 | }\r | |
619 | \r | |
620 | MnpDeviceData = MNP_DEVICE_DATA_FROM_THIS (This);\r | |
621 | if (MnpDeviceData->NumberOfVlan == 0) {\r | |
622 | return EFI_NOT_FOUND;\r | |
623 | }\r | |
624 | \r | |
625 | //\r | |
626 | // Try to find the VlanId\r | |
627 | //\r | |
628 | MnpServiceData = MnpFindServiceData (MnpDeviceData, VlanId);\r | |
629 | if (MnpServiceData == NULL) {\r | |
630 | return EFI_NOT_FOUND;\r | |
631 | }\r | |
632 | \r | |
633 | MnpDeviceData->NumberOfVlan--;\r | |
634 | \r | |
635 | if ((VlanId != 0) || (MnpDeviceData->NumberOfVlan != 0)) {\r | |
636 | //\r | |
637 | // If VlanId is not 0 or VlanId is 0 and it is not the last VLAN to remove,\r | |
638 | // destroy its MNP service data\r | |
639 | //\r | |
640 | Status = MnpDestroyServiceChild (MnpServiceData);\r | |
641 | if (EFI_ERROR (Status)) {\r | |
642 | return Status;\r | |
643 | }\r | |
644 | \r | |
645 | Status = MnpDestroyServiceData (MnpServiceData);\r | |
646 | if (EFI_ERROR (Status)) {\r | |
647 | return Status;\r | |
648 | }\r | |
649 | }\r | |
650 | \r | |
651 | if ((VlanId != 0) && (MnpDeviceData->NumberOfVlan == 0)) {\r | |
652 | //\r | |
653 | // This is the last VLAN to be removed, restore the default MNP service data\r | |
654 | //\r | |
655 | MnpServiceData = MnpCreateServiceData (MnpDeviceData, 0, 0);\r | |
656 | if (MnpServiceData == NULL) {\r | |
657 | return EFI_OUT_OF_RESOURCES;\r | |
658 | }\r | |
659 | }\r | |
660 | \r | |
661 | //\r | |
662 | // Update VLAN configuration variable\r | |
663 | //\r | |
664 | VlanVariable = NULL;\r | |
665 | if (MnpDeviceData->NumberOfVlan != 0) {\r | |
666 | VlanVariable = AllocatePool (MnpDeviceData->NumberOfVlan * sizeof (VLAN_TCI));\r | |
667 | if (VlanVariable == NULL) {\r | |
668 | return EFI_OUT_OF_RESOURCES;\r | |
669 | }\r | |
670 | \r | |
671 | VlanData = VlanVariable;\r | |
672 | NET_LIST_FOR_EACH (Entry, &MnpDeviceData->ServiceList) {\r | |
673 | MnpServiceData = MNP_SERVICE_DATA_FROM_LINK (Entry);\r | |
674 | \r | |
675 | VlanData->Bits.Vid = MnpServiceData->VlanId;\r | |
676 | VlanData->Bits.Priority = MnpServiceData->Priority;\r | |
677 | VlanData++;\r | |
678 | }\r | |
679 | }\r | |
680 | \r | |
681 | Status = MnpSetVlanVariable (MnpDeviceData, MnpDeviceData->NumberOfVlan, VlanVariable);\r | |
682 | \r | |
683 | if (VlanVariable != NULL) {\r | |
684 | FreePool (VlanVariable);\r | |
685 | }\r | |
686 | \r | |
687 | return Status;\r | |
688 | }\r |