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4c5a5e0c | 1 | /** @file\r |
2 | iSCSI DHCP4 related configuration routines.\r | |
3 | \r | |
f75a7f56 | 4 | Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>\r |
ecf98fbc | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
4c5a5e0c | 6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include "IScsiImpl.h"\r | |
10 | \r | |
4c5a5e0c | 11 | /**\r |
12 | Extract the Root Path option and get the required target information.\r | |
13 | \r | |
14 | @param[in] RootPath The RootPath.\r | |
15 | @param[in] Length Length of the RootPath option payload.\r | |
16 | @param[in, out] ConfigData The iSCSI attempt configuration data read\r | |
17 | from a nonvolatile device.\r | |
18 | \r | |
19 | @retval EFI_SUCCESS All required information is extracted from the RootPath option.\r | |
20 | @retval EFI_NOT_FOUND The RootPath is not an iSCSI RootPath.\r | |
21 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r | |
22 | @retval EFI_INVALID_PARAMETER The RootPath is malformatted.\r | |
23 | \r | |
24 | **/\r | |
25 | EFI_STATUS\r | |
26 | IScsiDhcpExtractRootPath (\r | |
27 | IN CHAR8 *RootPath,\r | |
28 | IN UINT8 Length,\r | |
d1050b9d | 29 | IN OUT ISCSI_ATTEMPT_CONFIG_NVDATA *ConfigData\r |
4c5a5e0c | 30 | )\r |
31 | {\r | |
d1050b9d MK |
32 | EFI_STATUS Status;\r |
33 | UINT8 IScsiRootPathIdLen;\r | |
34 | CHAR8 *TmpStr;\r | |
35 | ISCSI_ROOT_PATH_FIELD Fields[RP_FIELD_IDX_MAX];\r | |
36 | ISCSI_ROOT_PATH_FIELD *Field;\r | |
37 | UINT32 FieldIndex;\r | |
38 | UINT8 Index;\r | |
39 | ISCSI_SESSION_CONFIG_NVDATA *ConfigNvData;\r | |
40 | EFI_IP_ADDRESS Ip;\r | |
41 | UINT8 IpMode;\r | |
4c5a5e0c | 42 | \r |
43 | ConfigNvData = &ConfigData->SessionConfigData;\r | |
44 | \r | |
45 | //\r | |
46 | // "iscsi:"<servername>":"<protocol>":"<port>":"<LUN>":"<targetname>\r | |
47 | //\r | |
d1050b9d | 48 | IScsiRootPathIdLen = (UINT8)AsciiStrLen (ISCSI_ROOT_PATH_ID);\r |
4c5a5e0c | 49 | \r |
50 | if ((Length <= IScsiRootPathIdLen) || (CompareMem (RootPath, ISCSI_ROOT_PATH_ID, IScsiRootPathIdLen) != 0)) {\r | |
51 | return EFI_NOT_FOUND;\r | |
52 | }\r | |
d1050b9d | 53 | \r |
4c5a5e0c | 54 | //\r |
55 | // Skip the iSCSI RootPath ID "iscsi:".\r | |
56 | //\r | |
57 | RootPath += IScsiRootPathIdLen;\r | |
d1050b9d | 58 | Length = (UINT8)(Length - IScsiRootPathIdLen);\r |
4c5a5e0c | 59 | \r |
d1050b9d | 60 | TmpStr = (CHAR8 *)AllocatePool (Length + 1);\r |
4c5a5e0c | 61 | if (TmpStr == NULL) {\r |
62 | return EFI_OUT_OF_RESOURCES;\r | |
63 | }\r | |
64 | \r | |
65 | CopyMem (TmpStr, RootPath, Length);\r | |
d1050b9d | 66 | TmpStr[Length] = '\0';\r |
4c5a5e0c | 67 | \r |
d1050b9d MK |
68 | Index = 0;\r |
69 | FieldIndex = RP_FIELD_IDX_SERVERNAME;\r | |
4c5a5e0c | 70 | ZeroMem (&Fields[0], sizeof (Fields));\r |
71 | \r | |
72 | //\r | |
73 | // Extract the fields in the Root Path option string.\r | |
74 | //\r | |
75 | for (FieldIndex = RP_FIELD_IDX_SERVERNAME; (FieldIndex < RP_FIELD_IDX_MAX) && (Index < Length); FieldIndex++) {\r | |
76 | if (TmpStr[Index] != ISCSI_ROOT_PATH_FIELD_DELIMITER) {\r | |
77 | Fields[FieldIndex].Str = &TmpStr[Index];\r | |
78 | }\r | |
79 | \r | |
80 | while ((TmpStr[Index] != ISCSI_ROOT_PATH_FIELD_DELIMITER) && (Index < Length)) {\r | |
81 | Index++;\r | |
82 | }\r | |
83 | \r | |
84 | if (TmpStr[Index] == ISCSI_ROOT_PATH_FIELD_DELIMITER) {\r | |
85 | if (FieldIndex != RP_FIELD_IDX_TARGETNAME) {\r | |
86 | TmpStr[Index] = '\0';\r | |
87 | Index++;\r | |
88 | }\r | |
89 | \r | |
90 | if (Fields[FieldIndex].Str != NULL) {\r | |
d1050b9d | 91 | Fields[FieldIndex].Len = (UINT8)AsciiStrLen (Fields[FieldIndex].Str);\r |
4c5a5e0c | 92 | }\r |
93 | }\r | |
94 | }\r | |
95 | \r | |
96 | if (FieldIndex != RP_FIELD_IDX_MAX) {\r | |
97 | Status = EFI_INVALID_PARAMETER;\r | |
98 | goto ON_EXIT;\r | |
99 | }\r | |
100 | \r | |
101 | if ((Fields[RP_FIELD_IDX_SERVERNAME].Str == NULL) ||\r | |
102 | (Fields[RP_FIELD_IDX_TARGETNAME].Str == NULL) ||\r | |
103 | (Fields[RP_FIELD_IDX_PROTOCOL].Len > 1)\r | |
d1050b9d MK |
104 | )\r |
105 | {\r | |
4c5a5e0c | 106 | Status = EFI_INVALID_PARAMETER;\r |
107 | goto ON_EXIT;\r | |
108 | }\r | |
d1050b9d | 109 | \r |
4c5a5e0c | 110 | //\r |
111 | // Get the IP address of the target.\r | |
112 | //\r | |
d1050b9d | 113 | Field = &Fields[RP_FIELD_IDX_SERVERNAME];\r |
4c5a5e0c | 114 | \r |
115 | if (ConfigNvData->IpMode < IP_MODE_AUTOCONFIG) {\r | |
116 | IpMode = ConfigNvData->IpMode;\r | |
117 | } else {\r | |
118 | IpMode = ConfigData->AutoConfigureMode;\r | |
119 | }\r | |
120 | \r | |
eabc6e59 ZL |
121 | //\r |
122 | // Server name is expressed as domain name, just save it.\r | |
123 | //\r | |
124 | if ((!NET_IS_DIGIT (*(Field->Str))) && (*(Field->Str) != '[')) {\r | |
125 | ConfigNvData->DnsMode = TRUE;\r | |
0f1946b6 | 126 | if ((Field->Len + 2) > sizeof (ConfigNvData->TargetUrl)) {\r |
eabc6e59 ZL |
127 | return EFI_INVALID_PARAMETER;\r |
128 | }\r | |
d1050b9d | 129 | \r |
eabc6e59 ZL |
130 | CopyMem (&ConfigNvData->TargetUrl, Field->Str, Field->Len);\r |
131 | ConfigNvData->TargetUrl[Field->Len + 1] = '\0';\r | |
132 | } else {\r | |
db0cd7ec | 133 | ConfigNvData->DnsMode = FALSE;\r |
d1050b9d | 134 | ZeroMem (ConfigNvData->TargetUrl, sizeof (ConfigNvData->TargetUrl));\r |
eabc6e59 ZL |
135 | Status = IScsiAsciiStrToIp (Field->Str, IpMode, &Ip);\r |
136 | CopyMem (&ConfigNvData->TargetIp, &Ip, sizeof (EFI_IP_ADDRESS));\r | |
4c5a5e0c | 137 | \r |
eabc6e59 ZL |
138 | if (EFI_ERROR (Status)) {\r |
139 | goto ON_EXIT;\r | |
140 | }\r | |
4c5a5e0c | 141 | }\r |
d1050b9d | 142 | \r |
4c5a5e0c | 143 | //\r |
144 | // Check the protocol type.\r | |
145 | //\r | |
146 | Field = &Fields[RP_FIELD_IDX_PROTOCOL];\r | |
147 | if ((Field->Str != NULL) && ((*(Field->Str) - '0') != EFI_IP_PROTO_TCP)) {\r | |
148 | Status = EFI_INVALID_PARAMETER;\r | |
149 | goto ON_EXIT;\r | |
150 | }\r | |
d1050b9d | 151 | \r |
4c5a5e0c | 152 | //\r |
153 | // Get the port of the iSCSI target.\r | |
154 | //\r | |
155 | Field = &Fields[RP_FIELD_IDX_PORT];\r | |
156 | if (Field->Str != NULL) {\r | |
d1050b9d | 157 | ConfigNvData->TargetPort = (UINT16)AsciiStrDecimalToUintn (Field->Str);\r |
4c5a5e0c | 158 | } else {\r |
159 | ConfigNvData->TargetPort = ISCSI_WELL_KNOWN_PORT;\r | |
160 | }\r | |
d1050b9d | 161 | \r |
4c5a5e0c | 162 | //\r |
163 | // Get the LUN.\r | |
164 | //\r | |
165 | Field = &Fields[RP_FIELD_IDX_LUN];\r | |
166 | if (Field->Str != NULL) {\r | |
167 | Status = IScsiAsciiStrToLun (Field->Str, ConfigNvData->BootLun);\r | |
168 | if (EFI_ERROR (Status)) {\r | |
169 | goto ON_EXIT;\r | |
170 | }\r | |
171 | } else {\r | |
172 | ZeroMem (ConfigNvData->BootLun, sizeof (ConfigNvData->BootLun));\r | |
173 | }\r | |
d1050b9d | 174 | \r |
4c5a5e0c | 175 | //\r |
176 | // Get the target iSCSI Name.\r | |
177 | //\r | |
178 | Field = &Fields[RP_FIELD_IDX_TARGETNAME];\r | |
179 | \r | |
180 | if (AsciiStrLen (Field->Str) > ISCSI_NAME_MAX_SIZE - 1) {\r | |
181 | Status = EFI_INVALID_PARAMETER;\r | |
182 | goto ON_EXIT;\r | |
183 | }\r | |
d1050b9d | 184 | \r |
4c5a5e0c | 185 | //\r |
186 | // Validate the iSCSI name.\r | |
187 | //\r | |
188 | Status = IScsiNormalizeName (Field->Str, AsciiStrLen (Field->Str));\r | |
189 | if (EFI_ERROR (Status)) {\r | |
190 | goto ON_EXIT;\r | |
191 | }\r | |
192 | \r | |
c960bdc2 | 193 | AsciiStrCpyS (ConfigNvData->TargetName, ISCSI_NAME_MAX_SIZE, Field->Str);\r |
4c5a5e0c | 194 | \r |
195 | ON_EXIT:\r | |
196 | \r | |
197 | FreePool (TmpStr);\r | |
198 | \r | |
199 | return Status;\r | |
200 | }\r | |
201 | \r | |
202 | /**\r | |
efb56593 | 203 | The callback function registered to the DHCP4 instance that is used to select\r |
4c5a5e0c | 204 | the qualified DHCP OFFER.\r |
f75a7f56 | 205 | \r |
4c5a5e0c | 206 | @param[in] This The DHCP4 protocol.\r |
207 | @param[in] Context The context set when configuring the DHCP4 protocol.\r | |
208 | @param[in] CurrentState The current state of the DHCP4 protocol.\r | |
209 | @param[in] Dhcp4Event The event occurs in the current state.\r | |
f75a7f56 | 210 | @param[in] Packet The DHCP packet that is to be sent or was already received.\r |
4c5a5e0c | 211 | @param[out] NewPacket The packet used to replace the above Packet.\r |
f75a7f56 | 212 | \r |
4c5a5e0c | 213 | @retval EFI_SUCCESS Either the DHCP OFFER is qualified or we're not intereseted\r |
214 | in the Dhcp4Event.\r | |
215 | @retval EFI_NOT_READY The DHCP OFFER packet doesn't match our requirements.\r | |
216 | @retval Others Other errors as indicated.\r | |
217 | \r | |
218 | **/\r | |
219 | EFI_STATUS\r | |
220 | EFIAPI\r | |
221 | IScsiDhcpSelectOffer (\r | |
222 | IN EFI_DHCP4_PROTOCOL *This,\r | |
223 | IN VOID *Context,\r | |
224 | IN EFI_DHCP4_STATE CurrentState,\r | |
225 | IN EFI_DHCP4_EVENT Dhcp4Event,\r | |
8874fa19 | 226 | IN EFI_DHCP4_PACKET *Packet OPTIONAL,\r |
4c5a5e0c | 227 | OUT EFI_DHCP4_PACKET **NewPacket OPTIONAL\r |
228 | )\r | |
229 | {\r | |
d1050b9d MK |
230 | EFI_STATUS Status;\r |
231 | UINT32 OptionCount;\r | |
232 | EFI_DHCP4_PACKET_OPTION **OptionList;\r | |
233 | UINT32 Index;\r | |
4c5a5e0c | 234 | \r |
235 | if ((Dhcp4Event != Dhcp4RcvdOffer) && (Dhcp4Event != Dhcp4SelectOffer)) {\r | |
236 | return EFI_SUCCESS;\r | |
237 | }\r | |
238 | \r | |
239 | OptionCount = 0;\r | |
240 | \r | |
d1050b9d | 241 | Status = This->Parse (This, Packet, &OptionCount, NULL);\r |
4c5a5e0c | 242 | if (Status != EFI_BUFFER_TOO_SMALL) {\r |
243 | return EFI_NOT_READY;\r | |
244 | }\r | |
245 | \r | |
246 | OptionList = AllocatePool (OptionCount * sizeof (EFI_DHCP4_PACKET_OPTION *));\r | |
247 | if (OptionList == NULL) {\r | |
248 | return EFI_NOT_READY;\r | |
249 | }\r | |
250 | \r | |
251 | Status = This->Parse (This, Packet, &OptionCount, OptionList);\r | |
252 | if (EFI_ERROR (Status)) {\r | |
253 | FreePool (OptionList);\r | |
254 | return EFI_NOT_READY;\r | |
255 | }\r | |
256 | \r | |
257 | for (Index = 0; Index < OptionCount; Index++) {\r | |
142c00c3 | 258 | if (OptionList[Index]->OpCode != DHCP4_TAG_ROOTPATH) {\r |
4c5a5e0c | 259 | continue;\r |
260 | }\r | |
261 | \r | |
262 | Status = IScsiDhcpExtractRootPath (\r | |
d1050b9d | 263 | (CHAR8 *)&OptionList[Index]->Data[0],\r |
4c5a5e0c | 264 | OptionList[Index]->Length,\r |
d1050b9d | 265 | (ISCSI_ATTEMPT_CONFIG_NVDATA *)Context\r |
4c5a5e0c | 266 | );\r |
267 | \r | |
268 | break;\r | |
269 | }\r | |
270 | \r | |
cf260a47 | 271 | if (Index == OptionCount) {\r |
4c5a5e0c | 272 | Status = EFI_NOT_READY;\r |
273 | }\r | |
274 | \r | |
275 | FreePool (OptionList);\r | |
276 | \r | |
277 | return Status;\r | |
278 | }\r | |
279 | \r | |
280 | /**\r | |
281 | Parse the DHCP ACK to get the address configuration and DNS information.\r | |
282 | \r | |
283 | @param[in] Dhcp4 The DHCP4 protocol.\r | |
284 | @param[in, out] ConfigData The session configuration data.\r | |
285 | \r | |
286 | @retval EFI_SUCCESS The DNS information is got from the DHCP ACK.\r | |
287 | @retval EFI_NO_MAPPING DHCP failed to acquire address and other information.\r | |
288 | @retval EFI_INVALID_PARAMETER The DHCP ACK's DNS option is malformatted.\r | |
289 | @retval EFI_DEVICE_ERROR Other errors as indicated.\r | |
290 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r | |
291 | \r | |
292 | **/\r | |
293 | EFI_STATUS\r | |
294 | IScsiParseDhcpAck (\r | |
d1050b9d MK |
295 | IN EFI_DHCP4_PROTOCOL *Dhcp4,\r |
296 | IN OUT ISCSI_ATTEMPT_CONFIG_NVDATA *ConfigData\r | |
4c5a5e0c | 297 | )\r |
298 | {\r | |
d1050b9d MK |
299 | EFI_STATUS Status;\r |
300 | EFI_DHCP4_MODE_DATA Dhcp4ModeData;\r | |
301 | UINT32 OptionCount;\r | |
302 | EFI_DHCP4_PACKET_OPTION **OptionList;\r | |
303 | UINT32 Index;\r | |
304 | ISCSI_SESSION_CONFIG_NVDATA *NvData;\r | |
4c5a5e0c | 305 | \r |
306 | Status = Dhcp4->GetModeData (Dhcp4, &Dhcp4ModeData);\r | |
307 | if (EFI_ERROR (Status)) {\r | |
308 | return Status;\r | |
309 | }\r | |
310 | \r | |
311 | if (Dhcp4ModeData.State != Dhcp4Bound) {\r | |
312 | return EFI_NO_MAPPING;\r | |
313 | }\r | |
314 | \r | |
315 | NvData = &ConfigData->SessionConfigData;\r | |
316 | \r | |
317 | CopyMem (&NvData->LocalIp, &Dhcp4ModeData.ClientAddress, sizeof (EFI_IPv4_ADDRESS));\r | |
318 | CopyMem (&NvData->SubnetMask, &Dhcp4ModeData.SubnetMask, sizeof (EFI_IPv4_ADDRESS));\r | |
319 | CopyMem (&NvData->Gateway, &Dhcp4ModeData.RouterAddress, sizeof (EFI_IPv4_ADDRESS));\r | |
320 | \r | |
321 | OptionCount = 0;\r | |
322 | OptionList = NULL;\r | |
323 | \r | |
d1050b9d | 324 | Status = Dhcp4->Parse (Dhcp4, Dhcp4ModeData.ReplyPacket, &OptionCount, OptionList);\r |
4c5a5e0c | 325 | if (Status != EFI_BUFFER_TOO_SMALL) {\r |
326 | return EFI_DEVICE_ERROR;\r | |
327 | }\r | |
328 | \r | |
329 | OptionList = AllocatePool (OptionCount * sizeof (EFI_DHCP4_PACKET_OPTION *));\r | |
330 | if (OptionList == NULL) {\r | |
331 | return EFI_OUT_OF_RESOURCES;\r | |
332 | }\r | |
333 | \r | |
334 | Status = Dhcp4->Parse (Dhcp4, Dhcp4ModeData.ReplyPacket, &OptionCount, OptionList);\r | |
335 | if (EFI_ERROR (Status)) {\r | |
336 | FreePool (OptionList);\r | |
337 | return EFI_DEVICE_ERROR;\r | |
338 | }\r | |
339 | \r | |
340 | for (Index = 0; Index < OptionCount; Index++) {\r | |
341 | //\r | |
342 | // Get DNS server addresses and DHCP server address from this offer.\r | |
343 | //\r | |
142c00c3 | 344 | if (OptionList[Index]->OpCode == DHCP4_TAG_DNS_SERVER) {\r |
4c5a5e0c | 345 | if (((OptionList[Index]->Length & 0x3) != 0) || (OptionList[Index]->Length == 0)) {\r |
346 | Status = EFI_INVALID_PARAMETER;\r | |
347 | break;\r | |
348 | }\r | |
d1050b9d | 349 | \r |
4c5a5e0c | 350 | //\r |
351 | // Primary DNS server address.\r | |
352 | //\r | |
353 | CopyMem (&ConfigData->PrimaryDns, &OptionList[Index]->Data[0], sizeof (EFI_IPv4_ADDRESS));\r | |
354 | \r | |
355 | if (OptionList[Index]->Length > 4) {\r | |
356 | //\r | |
357 | // Secondary DNS server address.\r | |
358 | //\r | |
359 | CopyMem (&ConfigData->SecondaryDns, &OptionList[Index]->Data[4], sizeof (EFI_IPv4_ADDRESS));\r | |
360 | }\r | |
361 | } else if (OptionList[Index]->OpCode == DHCP4_TAG_SERVER_ID) {\r | |
362 | if (OptionList[Index]->Length != 4) {\r | |
363 | Status = EFI_INVALID_PARAMETER;\r | |
364 | break;\r | |
365 | }\r | |
366 | \r | |
367 | CopyMem (&ConfigData->DhcpServer, &OptionList[Index]->Data[0], sizeof (EFI_IPv4_ADDRESS));\r | |
368 | }\r | |
369 | }\r | |
370 | \r | |
371 | FreePool (OptionList);\r | |
372 | \r | |
373 | return Status;\r | |
374 | }\r | |
375 | \r | |
ef810bc8 JW |
376 | /**\r |
377 | This function will switch the IP4 configuration policy to Static.\r | |
378 | \r | |
379 | @param[in] Ip4Config2 Pointer to the IP4 configuration protocol.\r | |
380 | \r | |
381 | @retval EFI_SUCCESS The policy is already configured to static.\r | |
382 | @retval Others Other error as indicated.\r | |
383 | \r | |
384 | **/\r | |
385 | EFI_STATUS\r | |
386 | IScsiSetIp4Policy (\r | |
d1050b9d | 387 | IN EFI_IP4_CONFIG2_PROTOCOL *Ip4Config2\r |
ef810bc8 JW |
388 | )\r |
389 | {\r | |
d1050b9d MK |
390 | EFI_IP4_CONFIG2_POLICY Policy;\r |
391 | EFI_STATUS Status;\r | |
392 | UINTN DataSize;\r | |
ef810bc8 JW |
393 | \r |
394 | DataSize = sizeof (EFI_IP4_CONFIG2_POLICY);\r | |
d1050b9d MK |
395 | Status = Ip4Config2->GetData (\r |
396 | Ip4Config2,\r | |
397 | Ip4Config2DataTypePolicy,\r | |
398 | &DataSize,\r | |
399 | &Policy\r | |
400 | );\r | |
ef810bc8 JW |
401 | if (EFI_ERROR (Status)) {\r |
402 | return Status;\r | |
403 | }\r | |
404 | \r | |
405 | if (Policy != Ip4Config2PolicyStatic) {\r | |
406 | Policy = Ip4Config2PolicyStatic;\r | |
d1050b9d MK |
407 | Status = Ip4Config2->SetData (\r |
408 | Ip4Config2,\r | |
409 | Ip4Config2DataTypePolicy,\r | |
410 | sizeof (EFI_IP4_CONFIG2_POLICY),\r | |
411 | &Policy\r | |
412 | );\r | |
ef810bc8 JW |
413 | if (EFI_ERROR (Status)) {\r |
414 | return Status;\r | |
f75a7f56 | 415 | }\r |
ef810bc8 JW |
416 | }\r |
417 | \r | |
418 | return EFI_SUCCESS;\r | |
419 | }\r | |
4c5a5e0c | 420 | \r |
421 | /**\r | |
422 | Parse the DHCP ACK to get the address configuration and DNS information.\r | |
423 | \r | |
424 | @param[in] Image The handle of the driver image.\r | |
425 | @param[in] Controller The handle of the controller.\r | |
426 | @param[in, out] ConfigData The attempt configuration data.\r | |
427 | \r | |
428 | @retval EFI_SUCCESS The DNS information is got from the DHCP ACK.\r | |
429 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r | |
430 | @retval EFI_NO_MEDIA There was a media error.\r | |
431 | @retval Others Other errors as indicated.\r | |
432 | \r | |
433 | **/\r | |
434 | EFI_STATUS\r | |
435 | IScsiDoDhcp (\r | |
d1050b9d MK |
436 | IN EFI_HANDLE Image,\r |
437 | IN EFI_HANDLE Controller,\r | |
438 | IN OUT ISCSI_ATTEMPT_CONFIG_NVDATA *ConfigData\r | |
4c5a5e0c | 439 | )\r |
440 | {\r | |
d1050b9d MK |
441 | EFI_HANDLE Dhcp4Handle;\r |
442 | EFI_IP4_CONFIG2_PROTOCOL *Ip4Config2;\r | |
443 | EFI_DHCP4_PROTOCOL *Dhcp4;\r | |
444 | EFI_STATUS Status;\r | |
445 | EFI_DHCP4_PACKET_OPTION *ParaList;\r | |
446 | EFI_DHCP4_CONFIG_DATA Dhcp4ConfigData;\r | |
447 | ISCSI_SESSION_CONFIG_NVDATA *NvData;\r | |
448 | EFI_STATUS MediaStatus;\r | |
4c5a5e0c | 449 | \r |
450 | Dhcp4Handle = NULL;\r | |
ef810bc8 | 451 | Ip4Config2 = NULL;\r |
4c5a5e0c | 452 | Dhcp4 = NULL;\r |
453 | ParaList = NULL;\r | |
454 | \r | |
455 | //\r | |
456 | // Check media status before doing DHCP.\r | |
457 | //\r | |
152f2d5e | 458 | MediaStatus = EFI_SUCCESS;\r |
459 | NetLibDetectMediaWaitTimeout (Controller, ISCSI_CHECK_MEDIA_GET_DHCP_WAITING_TIME, &MediaStatus);\r | |
d1050b9d | 460 | if (MediaStatus != EFI_SUCCESS) {\r |
152f2d5e | 461 | AsciiPrint ("\n Error: Could not detect network connection.\n");\r |
4c5a5e0c | 462 | return EFI_NO_MEDIA;\r |
463 | }\r | |
464 | \r | |
ef810bc8 | 465 | //\r |
f75a7f56 LG |
466 | // DHCP4 service allows only one of its children to be configured in\r |
467 | // the active state, If the DHCP4 D.O.R.A started by IP4 auto\r | |
468 | // configuration and has not been completed, the Dhcp4 state machine\r | |
469 | // will not be in the right state for the iSCSI to start a new round D.O.R.A.\r | |
efb56593 | 470 | // So, we need to switch its policy to static.\r |
ef810bc8 | 471 | //\r |
d1050b9d | 472 | Status = gBS->HandleProtocol (Controller, &gEfiIp4Config2ProtocolGuid, (VOID **)&Ip4Config2);\r |
ef810bc8 JW |
473 | if (!EFI_ERROR (Status)) {\r |
474 | Status = IScsiSetIp4Policy (Ip4Config2);\r | |
475 | if (EFI_ERROR (Status)) {\r | |
476 | return Status;\r | |
477 | }\r | |
478 | }\r | |
479 | \r | |
4c5a5e0c | 480 | //\r |
481 | // Create a DHCP4 child instance and get the protocol.\r | |
482 | //\r | |
483 | Status = NetLibCreateServiceChild (\r | |
484 | Controller,\r | |
485 | Image,\r | |
486 | &gEfiDhcp4ServiceBindingProtocolGuid,\r | |
487 | &Dhcp4Handle\r | |
488 | );\r | |
489 | if (EFI_ERROR (Status)) {\r | |
490 | return Status;\r | |
491 | }\r | |
492 | \r | |
493 | Status = gBS->OpenProtocol (\r | |
494 | Dhcp4Handle,\r | |
495 | &gEfiDhcp4ProtocolGuid,\r | |
d1050b9d | 496 | (VOID **)&Dhcp4,\r |
4c5a5e0c | 497 | Image,\r |
498 | Controller,\r | |
499 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
500 | );\r | |
501 | if (EFI_ERROR (Status)) {\r | |
502 | goto ON_EXIT;\r | |
503 | }\r | |
504 | \r | |
d1050b9d | 505 | NvData = &ConfigData->SessionConfigData;\r |
4c5a5e0c | 506 | \r |
507 | ParaList = AllocatePool (sizeof (EFI_DHCP4_PACKET_OPTION) + 3);\r | |
508 | if (ParaList == NULL) {\r | |
509 | Status = EFI_OUT_OF_RESOURCES;\r | |
510 | goto ON_EXIT;\r | |
511 | }\r | |
512 | \r | |
513 | //\r | |
514 | // Ask the server to reply with Netmask, Router, DNS, and RootPath options.\r | |
515 | //\r | |
516 | ParaList->OpCode = DHCP4_TAG_PARA_LIST;\r | |
d1050b9d | 517 | ParaList->Length = (UINT8)(NvData->TargetInfoFromDhcp ? 4 : 3);\r |
4c5a5e0c | 518 | ParaList->Data[0] = DHCP4_TAG_NETMASK;\r |
519 | ParaList->Data[1] = DHCP4_TAG_ROUTER;\r | |
142c00c3 ZL |
520 | ParaList->Data[2] = DHCP4_TAG_DNS_SERVER;\r |
521 | ParaList->Data[3] = DHCP4_TAG_ROOTPATH;\r | |
4c5a5e0c | 522 | \r |
523 | ZeroMem (&Dhcp4ConfigData, sizeof (EFI_DHCP4_CONFIG_DATA));\r | |
524 | Dhcp4ConfigData.OptionCount = 1;\r | |
525 | Dhcp4ConfigData.OptionList = &ParaList;\r | |
526 | \r | |
527 | if (NvData->TargetInfoFromDhcp) {\r | |
528 | //\r | |
529 | // Use callback to select an offer that contains target information.\r | |
530 | //\r | |
531 | Dhcp4ConfigData.Dhcp4Callback = IScsiDhcpSelectOffer;\r | |
532 | Dhcp4ConfigData.CallbackContext = ConfigData;\r | |
533 | }\r | |
534 | \r | |
535 | Status = Dhcp4->Configure (Dhcp4, &Dhcp4ConfigData);\r | |
536 | if (EFI_ERROR (Status)) {\r | |
537 | goto ON_EXIT;\r | |
538 | }\r | |
539 | \r | |
540 | Status = Dhcp4->Start (Dhcp4, NULL);\r | |
541 | if (EFI_ERROR (Status)) {\r | |
542 | goto ON_EXIT;\r | |
543 | }\r | |
d1050b9d | 544 | \r |
4c5a5e0c | 545 | //\r |
546 | // Parse the ACK to get required information.\r | |
547 | //\r | |
548 | Status = IScsiParseDhcpAck (Dhcp4, ConfigData);\r | |
549 | \r | |
550 | ON_EXIT:\r | |
551 | \r | |
552 | if (ParaList != NULL) {\r | |
553 | FreePool (ParaList);\r | |
554 | }\r | |
555 | \r | |
556 | if (Dhcp4 != NULL) {\r | |
557 | Dhcp4->Stop (Dhcp4);\r | |
558 | Dhcp4->Configure (Dhcp4, NULL);\r | |
559 | \r | |
560 | gBS->CloseProtocol (\r | |
561 | Dhcp4Handle,\r | |
562 | &gEfiDhcp4ProtocolGuid,\r | |
563 | Image,\r | |
564 | Controller\r | |
565 | );\r | |
566 | }\r | |
567 | \r | |
568 | NetLibDestroyServiceChild (\r | |
569 | Controller,\r | |
570 | Image,\r | |
571 | &gEfiDhcp4ServiceBindingProtocolGuid,\r | |
572 | Dhcp4Handle\r | |
573 | );\r | |
574 | \r | |
575 | return Status;\r | |
576 | }\r |