]>
Commit | Line | Data |
---|---|---|
eabc6e59 ZL |
1 | /** @file\r |
2 | Perform DNS resolution based on UEFI DNS protocols.\r | |
3 | \r | |
4 | Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "IScsiImpl.h"\r | |
16 | \r | |
17 | /**\r | |
18 | Notify the callback function when an event is triggered.\r | |
19 | \r | |
20 | @param[in] Event The triggered event.\r | |
21 | @param[in] Context The opaque parameter to the function.\r | |
22 | \r | |
23 | **/\r | |
24 | VOID\r | |
25 | EFIAPI\r | |
26 | IScsiCommonNotify (\r | |
27 | IN EFI_EVENT Event,\r | |
28 | IN VOID *Context\r | |
29 | )\r | |
30 | {\r | |
31 | *((BOOLEAN *) Context) = TRUE;\r | |
32 | }\r | |
33 | \r | |
34 | /**\r | |
35 | Retrieve the host address using the EFI_DNS4_PROTOCOL.\r | |
36 | \r | |
37 | @param[in] Image The handle of the driver image.\r | |
38 | @param[in] Controller The handle of the controller.\r | |
39 | @param[in, out] NvData The Session config data structure.\r | |
40 | \r | |
41 | @retval EFI_SUCCESS Operation succeeded.\r | |
42 | @retval EFI_OUT_OF_RESOURCES Failed to allocate needed resources.\r | |
43 | @retval EFI_DEVICE_ERROR An unexpected network error occurred.\r | |
44 | @retval Others Other errors as indicated.\r | |
45 | \r | |
46 | **/\r | |
47 | EFI_STATUS\r | |
48 | IScsiDns4 (\r | |
49 | IN EFI_HANDLE Image,\r | |
50 | IN EFI_HANDLE Controller,\r | |
51 | IN OUT ISCSI_SESSION_CONFIG_NVDATA *NvData\r | |
52 | )\r | |
53 | {\r | |
54 | EFI_STATUS Status;\r | |
55 | EFI_DNS4_PROTOCOL *Dns4;\r | |
56 | EFI_DNS4_CONFIG_DATA Dns4CfgData;\r | |
57 | EFI_DNS4_COMPLETION_TOKEN Token;\r | |
58 | BOOLEAN IsDone;\r | |
59 | EFI_HANDLE Dns4Handle;\r | |
60 | EFI_IP4_CONFIG2_PROTOCOL *Ip4Config2;\r | |
61 | EFI_IPv4_ADDRESS *DnsServerList;\r | |
62 | UINTN DnsServerListCount;\r | |
63 | UINTN DataSize;\r | |
64 | CHAR16 *HostName;\r | |
65 | \r | |
66 | DnsServerList = NULL;\r | |
67 | DnsServerListCount = 0;\r | |
68 | Dns4Handle = NULL;\r | |
69 | Dns4 = NULL;\r | |
70 | ZeroMem (&Token, sizeof (EFI_DNS4_COMPLETION_TOKEN));\r | |
71 | \r | |
72 | //\r | |
73 | // Get DNS server list from EFI IPv4 Configuration II protocol.\r | |
74 | //\r | |
75 | Status = gBS->HandleProtocol (Controller, &gEfiIp4Config2ProtocolGuid, (VOID **) &Ip4Config2);\r | |
76 | if (!EFI_ERROR (Status)) {\r | |
77 | //\r | |
78 | // Get the required size.\r | |
79 | //\r | |
80 | DataSize = 0;\r | |
81 | Status = Ip4Config2->GetData (Ip4Config2, Ip4Config2DataTypeDnsServer, &DataSize, NULL);\r | |
82 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
83 | DnsServerList = AllocatePool (DataSize);\r | |
84 | if (DnsServerList == NULL) {\r | |
85 | return EFI_OUT_OF_RESOURCES;\r | |
86 | }\r | |
87 | \r | |
88 | Status = Ip4Config2->GetData (Ip4Config2, Ip4Config2DataTypeDnsServer, &DataSize, DnsServerList);\r | |
89 | if (EFI_ERROR (Status)) {\r | |
90 | FreePool (DnsServerList);\r | |
91 | DnsServerList = NULL;\r | |
92 | } else {\r | |
93 | DnsServerListCount = DataSize / sizeof (EFI_IPv4_ADDRESS);\r | |
94 | }\r | |
95 | }\r | |
96 | }\r | |
97 | \r | |
98 | \r | |
99 | //\r | |
100 | // Create a DNS child instance and get the protocol.\r | |
101 | //\r | |
102 | Status = NetLibCreateServiceChild (\r | |
103 | Controller,\r | |
104 | Image,\r | |
105 | &gEfiDns4ServiceBindingProtocolGuid,\r | |
106 | &Dns4Handle\r | |
107 | );\r | |
108 | if (EFI_ERROR (Status)) {\r | |
109 | goto Exit;\r | |
110 | }\r | |
111 | \r | |
112 | Status = gBS->OpenProtocol (\r | |
113 | Dns4Handle,\r | |
114 | &gEfiDns4ProtocolGuid,\r | |
115 | (VOID **) &Dns4,\r | |
116 | Image,\r | |
117 | Controller,\r | |
118 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
119 | );\r | |
120 | if (EFI_ERROR (Status)) {\r | |
121 | goto Exit;\r | |
122 | }\r | |
123 | \r | |
124 | //\r | |
125 | // Configure DNS4 instance for the DNS server address and protocol.\r | |
126 | //\r | |
127 | ZeroMem (&Dns4CfgData, sizeof (Dns4CfgData));\r | |
128 | Dns4CfgData.DnsServerListCount = DnsServerListCount;\r | |
129 | Dns4CfgData.DnsServerList = DnsServerList;\r | |
130 | Dns4CfgData.EnableDnsCache = TRUE;\r | |
131 | IP4_COPY_ADDRESS (&Dns4CfgData.StationIp, &NvData->LocalIp);\r | |
132 | IP4_COPY_ADDRESS (&Dns4CfgData.SubnetMask, &NvData->SubnetMask);\r | |
133 | Dns4CfgData.Protocol = EFI_IP_PROTO_UDP;\r | |
134 | Status = Dns4->Configure (\r | |
135 | Dns4,\r | |
136 | &Dns4CfgData\r | |
137 | );\r | |
138 | if (EFI_ERROR (Status)) {\r | |
139 | goto Exit;\r | |
140 | }\r | |
141 | \r | |
142 | //\r | |
143 | // Create event to set the is done flag when name resolution is finished.\r | |
144 | //\r | |
145 | ZeroMem (&Token, sizeof (Token));\r | |
146 | Status = gBS->CreateEvent (\r | |
147 | EVT_NOTIFY_SIGNAL,\r | |
148 | TPL_NOTIFY,\r | |
149 | IScsiCommonNotify,\r | |
150 | &IsDone,\r | |
151 | &Token.Event\r | |
152 | );\r | |
153 | if (EFI_ERROR (Status)) {\r | |
154 | goto Exit;\r | |
155 | }\r | |
156 | \r | |
157 | //\r | |
158 | // Start asynchronous name resolution.\r | |
159 | //\r | |
160 | Token.Status = EFI_NOT_READY;\r | |
161 | IsDone = FALSE;\r | |
162 | \r | |
163 | HostName = (CHAR16 *) AllocateZeroPool (ISCSI_NAME_MAX_SIZE);\r | |
164 | if (HostName == NULL) {\r | |
165 | return EFI_OUT_OF_RESOURCES;\r | |
166 | }\r | |
167 | \r | |
168 | AsciiStrToUnicodeStrS (\r | |
169 | NvData->TargetUrl,\r | |
170 | HostName,\r | |
171 | ISCSI_NAME_MAX_SIZE\r | |
172 | );\r | |
173 | \r | |
174 | Status = Dns4->HostNameToIp (Dns4, HostName, &Token);\r | |
175 | if (EFI_ERROR (Status)) {\r | |
176 | goto Exit;\r | |
177 | }\r | |
178 | \r | |
179 | while (!IsDone) {\r | |
180 | Dns4->Poll (Dns4);\r | |
181 | }\r | |
182 | \r | |
183 | //\r | |
184 | // Name resolution is done, check result.\r | |
185 | //\r | |
186 | Status = Token.Status;\r | |
187 | if (!EFI_ERROR (Status)) {\r | |
188 | if (Token.RspData.H2AData == NULL) {\r | |
189 | Status = EFI_DEVICE_ERROR;\r | |
190 | goto Exit;\r | |
191 | }\r | |
192 | if (Token.RspData.H2AData->IpCount == 0 || Token.RspData.H2AData->IpList == NULL) {\r | |
193 | Status = EFI_DEVICE_ERROR;\r | |
194 | goto Exit;\r | |
195 | }\r | |
196 | //\r | |
197 | // We just return the first IP address from DNS protocol.\r | |
198 | //\r | |
199 | IP4_COPY_ADDRESS (&NvData->TargetIp.v4, Token.RspData.H2AData->IpList);\r | |
200 | Status = EFI_SUCCESS;\r | |
201 | }\r | |
202 | \r | |
203 | Exit:\r | |
204 | \r | |
205 | if (Token.Event != NULL) {\r | |
206 | gBS->CloseEvent (Token.Event);\r | |
207 | }\r | |
208 | if (Token.RspData.H2AData != NULL) {\r | |
209 | if (Token.RspData.H2AData->IpList != NULL) {\r | |
210 | FreePool (Token.RspData.H2AData->IpList);\r | |
211 | }\r | |
212 | FreePool (Token.RspData.H2AData);\r | |
213 | }\r | |
214 | \r | |
215 | if (Dns4 != NULL) {\r | |
216 | Dns4->Configure (Dns4, NULL);\r | |
217 | \r | |
218 | gBS->CloseProtocol (\r | |
219 | Dns4Handle,\r | |
220 | &gEfiDns4ProtocolGuid,\r | |
221 | Image,\r | |
222 | Controller\r | |
223 | );\r | |
224 | }\r | |
225 | \r | |
226 | if (Dns4Handle != NULL) {\r | |
227 | NetLibDestroyServiceChild (\r | |
228 | Controller,\r | |
229 | Image,\r | |
230 | &gEfiDns4ServiceBindingProtocolGuid,\r | |
231 | Dns4Handle\r | |
232 | );\r | |
233 | }\r | |
234 | \r | |
235 | return Status;\r | |
236 | }\r | |
237 | \r | |
238 | /**\r | |
239 | Retrieve the host address using the EFI_DNS6_PROTOCOL.\r | |
240 | \r | |
241 | @param[in] Image The handle of the driver image.\r | |
242 | @param[in] Controller The handle of the controller.\r | |
243 | @param[in, out] NvData The Session config data structure.\r | |
244 | \r | |
245 | @retval EFI_SUCCESS Operation succeeded.\r | |
246 | @retval EFI_OUT_OF_RESOURCES Failed to allocate needed resources.\r | |
247 | @retval EFI_DEVICE_ERROR An unexpected network error occurred.\r | |
248 | @retval Others Other errors as indicated.\r | |
249 | \r | |
250 | **/\r | |
251 | EFI_STATUS\r | |
252 | IScsiDns6 (\r | |
253 | IN EFI_HANDLE Image,\r | |
254 | IN EFI_HANDLE Controller,\r | |
255 | IN OUT ISCSI_SESSION_CONFIG_NVDATA *NvData\r | |
256 | )\r | |
257 | {\r | |
258 | EFI_STATUS Status;\r | |
259 | EFI_DNS6_PROTOCOL *Dns6;\r | |
260 | EFI_DNS6_CONFIG_DATA Dns6ConfigData;\r | |
261 | EFI_DNS6_COMPLETION_TOKEN Token;\r | |
262 | EFI_HANDLE Dns6Handle;\r | |
263 | EFI_IP6_CONFIG_PROTOCOL *Ip6Config;\r | |
264 | EFI_IPv6_ADDRESS *DnsServerList;\r | |
265 | UINTN DnsServerListCount;\r | |
266 | UINTN DataSize;\r | |
267 | BOOLEAN IsDone;\r | |
268 | CHAR16 *HostName;\r | |
269 | \r | |
270 | DnsServerList = NULL;\r | |
271 | DnsServerListCount = 0;\r | |
272 | Dns6 = NULL;\r | |
273 | Dns6Handle = NULL;\r | |
274 | ZeroMem (&Token, sizeof (EFI_DNS6_COMPLETION_TOKEN));\r | |
275 | \r | |
276 | //\r | |
277 | // Get DNS server list from EFI IPv6 Configuration protocol.\r | |
278 | //\r | |
279 | Status = gBS->HandleProtocol (Controller, &gEfiIp6ConfigProtocolGuid, (VOID **) &Ip6Config);\r | |
280 | if (!EFI_ERROR (Status)) {\r | |
281 | //\r | |
282 | // Get the required size.\r | |
283 | //\r | |
284 | DataSize = 0;\r | |
285 | Status = Ip6Config->GetData (Ip6Config, Ip6ConfigDataTypeDnsServer, &DataSize, NULL);\r | |
286 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
287 | DnsServerList = AllocatePool (DataSize);\r | |
288 | if (DnsServerList == NULL) {\r | |
289 | return EFI_OUT_OF_RESOURCES;\r | |
290 | }\r | |
291 | \r | |
292 | Status = Ip6Config->GetData (Ip6Config, Ip6ConfigDataTypeDnsServer, &DataSize, DnsServerList);\r | |
293 | if (EFI_ERROR (Status)) {\r | |
294 | FreePool (DnsServerList);\r | |
295 | DnsServerList = NULL;\r | |
296 | } else {\r | |
297 | DnsServerListCount = DataSize / sizeof (EFI_IPv6_ADDRESS);\r | |
298 | }\r | |
299 | }\r | |
300 | }\r | |
301 | \r | |
302 | //\r | |
303 | // Create a DNSv6 child instance and get the protocol.\r | |
304 | //\r | |
305 | Status = NetLibCreateServiceChild (\r | |
306 | Controller,\r | |
307 | Image,\r | |
308 | &gEfiDns6ServiceBindingProtocolGuid,\r | |
309 | &Dns6Handle\r | |
310 | );\r | |
311 | if (EFI_ERROR (Status)) {\r | |
312 | goto Exit;\r | |
313 | }\r | |
314 | \r | |
315 | Status = gBS->OpenProtocol (\r | |
316 | Dns6Handle,\r | |
317 | &gEfiDns6ProtocolGuid,\r | |
318 | (VOID **) &Dns6,\r | |
319 | Image,\r | |
320 | Controller,\r | |
321 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
322 | );\r | |
323 | if (EFI_ERROR (Status)) {\r | |
324 | goto Exit;\r | |
325 | }\r | |
326 | \r | |
327 | //\r | |
328 | // Configure DNS6 instance for the DNS server address and protocol.\r | |
329 | //\r | |
330 | ZeroMem (&Dns6ConfigData, sizeof (EFI_DNS6_CONFIG_DATA));\r | |
331 | Dns6ConfigData.DnsServerCount = (UINT32)DnsServerListCount;\r | |
332 | Dns6ConfigData.DnsServerList = DnsServerList;\r | |
333 | Dns6ConfigData.EnableDnsCache = TRUE;\r | |
334 | Dns6ConfigData.Protocol = EFI_IP_PROTO_UDP;\r | |
335 | Status = Dns6->Configure (\r | |
336 | Dns6,\r | |
337 | &Dns6ConfigData\r | |
338 | );\r | |
339 | if (EFI_ERROR (Status)) {\r | |
340 | goto Exit;\r | |
341 | }\r | |
342 | \r | |
343 | Token.Status = EFI_NOT_READY;\r | |
344 | IsDone = FALSE;\r | |
345 | //\r | |
346 | // Create event to set the IsDone flag when name resolution is finished.\r | |
347 | //\r | |
348 | Status = gBS->CreateEvent (\r | |
349 | EVT_NOTIFY_SIGNAL,\r | |
350 | TPL_NOTIFY,\r | |
351 | IScsiCommonNotify,\r | |
352 | &IsDone,\r | |
353 | &Token.Event\r | |
354 | );\r | |
355 | if (EFI_ERROR (Status)) {\r | |
356 | goto Exit;\r | |
357 | }\r | |
358 | \r | |
359 | //\r | |
360 | // Start asynchronous name resolution.\r | |
361 | //\r | |
362 | HostName = (CHAR16 *) AllocateZeroPool (ISCSI_NAME_MAX_SIZE);\r | |
363 | if (HostName == NULL) {\r | |
364 | return EFI_OUT_OF_RESOURCES;\r | |
365 | }\r | |
366 | \r | |
367 | AsciiStrToUnicodeStrS (\r | |
368 | NvData->TargetUrl,\r | |
369 | HostName,\r | |
370 | ISCSI_NAME_MAX_SIZE\r | |
371 | );\r | |
372 | Status = Dns6->HostNameToIp (Dns6, HostName, &Token);\r | |
373 | if (EFI_ERROR (Status)) {\r | |
374 | goto Exit;\r | |
375 | }\r | |
376 | \r | |
377 | while (!IsDone) {\r | |
378 | Dns6->Poll (Dns6);\r | |
379 | }\r | |
380 | \r | |
381 | //\r | |
382 | // Name resolution is done, check result.\r | |
383 | //\r | |
384 | Status = Token.Status;\r | |
385 | if (!EFI_ERROR (Status)) {\r | |
386 | if (Token.RspData.H2AData == NULL) {\r | |
387 | Status = EFI_DEVICE_ERROR;\r | |
388 | goto Exit;\r | |
389 | }\r | |
390 | if (Token.RspData.H2AData->IpCount == 0 || Token.RspData.H2AData->IpList == NULL) {\r | |
391 | Status = EFI_DEVICE_ERROR;\r | |
392 | goto Exit;\r | |
393 | }\r | |
394 | //\r | |
395 | // We just return the first IPv6 address from DNS protocol.\r | |
396 | //\r | |
397 | IP6_COPY_ADDRESS (&NvData->TargetIp.v6, Token.RspData.H2AData->IpList);\r | |
398 | Status = EFI_SUCCESS;\r | |
399 | }\r | |
400 | \r | |
401 | Exit:\r | |
402 | \r | |
403 | if (Token.Event != NULL) {\r | |
404 | gBS->CloseEvent (Token.Event);\r | |
405 | }\r | |
406 | if (Token.RspData.H2AData != NULL) {\r | |
407 | if (Token.RspData.H2AData->IpList != NULL) {\r | |
408 | FreePool (Token.RspData.H2AData->IpList);\r | |
409 | }\r | |
410 | FreePool (Token.RspData.H2AData);\r | |
411 | }\r | |
412 | \r | |
413 | if (Dns6 != NULL) {\r | |
414 | Dns6->Configure (Dns6, NULL);\r | |
415 | \r | |
416 | gBS->CloseProtocol (\r | |
417 | Dns6Handle,\r | |
418 | &gEfiDns6ProtocolGuid,\r | |
419 | Image,\r | |
420 | Controller\r | |
421 | );\r | |
422 | }\r | |
423 | \r | |
424 | if (Dns6Handle != NULL) {\r | |
425 | NetLibDestroyServiceChild (\r | |
426 | Controller,\r | |
427 | Image,\r | |
428 | &gEfiDns6ServiceBindingProtocolGuid,\r | |
429 | Dns6Handle\r | |
430 | );\r | |
431 | }\r | |
432 | \r | |
433 | return Status;\r | |
434 | }\r | |
435 | \r |