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d933e70a JW |
1 | /** @file\r |
2 | Functions implementation related with DHCPv4 for HTTP boot driver.\r | |
3 | \r | |
95b5c32f | 4 | Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>\r |
d933e70a JW |
5 | This program and the accompanying materials are licensed and made available under \r |
6 | the terms and conditions of the BSD License that accompanies this distribution. \r | |
7 | 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 "HttpBootDxe.h"\r | |
16 | \r | |
17 | //\r | |
18 | // This is a map from the interested DHCP4 option tags' index to the tag value.\r | |
19 | //\r | |
20 | UINT8 mInterestedDhcp4Tags[HTTP_BOOT_DHCP4_TAG_INDEX_MAX] = {\r | |
142c00c3 ZL |
21 | DHCP4_TAG_BOOTFILE_LEN,\r |
22 | DHCP4_TAG_OVERLOAD,\r | |
23 | DHCP4_TAG_MSG_TYPE,\r | |
24 | DHCP4_TAG_SERVER_ID,\r | |
25 | DHCP4_TAG_VENDOR_CLASS_ID,\r | |
26 | DHCP4_TAG_BOOTFILE,\r | |
27 | DHCP4_TAG_DNS_SERVER\r | |
d933e70a JW |
28 | };\r |
29 | \r | |
30 | //\r | |
31 | // There are 4 times retries with the value of 4, 8, 16 and 32, refers to UEFI 2.5 spec.\r | |
32 | //\r | |
33 | UINT32 mHttpDhcpTimeout[4] = {4, 8, 16, 32};\r | |
34 | \r | |
35 | /**\r | |
36 | Build the options buffer for the DHCPv4 request packet.\r | |
37 | \r | |
38 | @param[in] Private Pointer to HTTP boot driver private data.\r | |
39 | @param[out] OptList Pointer to the option pointer array.\r | |
40 | @param[in] Buffer Pointer to the buffer to contain the option list.\r | |
41 | \r | |
42 | @return Index The count of the built-in options.\r | |
43 | \r | |
44 | **/\r | |
45 | UINT32\r | |
46 | HttpBootBuildDhcp4Options (\r | |
47 | IN HTTP_BOOT_PRIVATE_DATA *Private,\r | |
48 | OUT EFI_DHCP4_PACKET_OPTION **OptList,\r | |
49 | IN UINT8 *Buffer\r | |
50 | )\r | |
51 | {\r | |
52 | HTTP_BOOT_DHCP4_OPTION_ENTRY OptEnt;\r | |
53 | UINT16 Value;\r | |
54 | UINT32 Index;\r | |
55 | \r | |
56 | Index = 0;\r | |
57 | OptList[0] = (EFI_DHCP4_PACKET_OPTION *) Buffer;\r | |
58 | \r | |
59 | //\r | |
60 | // Append parameter request list option.\r | |
61 | //\r | |
142c00c3 | 62 | OptList[Index]->OpCode = DHCP4_TAG_PARA_LIST;\r |
d933e70a JW |
63 | OptList[Index]->Length = 27;\r |
64 | OptEnt.Para = (HTTP_BOOT_DHCP4_OPTION_PARA *) OptList[Index]->Data;\r | |
142c00c3 ZL |
65 | OptEnt.Para->ParaList[0] = DHCP4_TAG_NETMASK;\r |
66 | OptEnt.Para->ParaList[1] = DHCP4_TAG_TIME_OFFSET;\r | |
67 | OptEnt.Para->ParaList[2] = DHCP4_TAG_ROUTER;\r | |
68 | OptEnt.Para->ParaList[3] = DHCP4_TAG_TIME_SERVER;\r | |
69 | OptEnt.Para->ParaList[4] = DHCP4_TAG_NAME_SERVER;\r | |
70 | OptEnt.Para->ParaList[5] = DHCP4_TAG_DNS_SERVER;\r | |
71 | OptEnt.Para->ParaList[6] = DHCP4_TAG_HOSTNAME;\r | |
72 | OptEnt.Para->ParaList[7] = DHCP4_TAG_BOOTFILE_LEN;\r | |
73 | OptEnt.Para->ParaList[8] = DHCP4_TAG_DOMAINNAME;\r | |
74 | OptEnt.Para->ParaList[9] = DHCP4_TAG_ROOTPATH;\r | |
75 | OptEnt.Para->ParaList[10] = DHCP4_TAG_EXTEND_PATH;\r | |
76 | OptEnt.Para->ParaList[11] = DHCP4_TAG_EMTU;\r | |
77 | OptEnt.Para->ParaList[12] = DHCP4_TAG_TTL;\r | |
78 | OptEnt.Para->ParaList[13] = DHCP4_TAG_BROADCAST;\r | |
79 | OptEnt.Para->ParaList[14] = DHCP4_TAG_NIS_DOMAIN;\r | |
80 | OptEnt.Para->ParaList[15] = DHCP4_TAG_NIS_SERVER;\r | |
81 | OptEnt.Para->ParaList[16] = DHCP4_TAG_NTP_SERVER;\r | |
82 | OptEnt.Para->ParaList[17] = DHCP4_TAG_VENDOR;\r | |
83 | OptEnt.Para->ParaList[18] = DHCP4_TAG_REQUEST_IP;\r | |
84 | OptEnt.Para->ParaList[19] = DHCP4_TAG_LEASE;\r | |
85 | OptEnt.Para->ParaList[20] = DHCP4_TAG_SERVER_ID;\r | |
86 | OptEnt.Para->ParaList[21] = DHCP4_TAG_T1;\r | |
87 | OptEnt.Para->ParaList[22] = DHCP4_TAG_T2;\r | |
88 | OptEnt.Para->ParaList[23] = DHCP4_TAG_VENDOR_CLASS_ID;\r | |
89 | OptEnt.Para->ParaList[25] = DHCP4_TAG_BOOTFILE;\r | |
90 | OptEnt.Para->ParaList[26] = DHCP4_TAG_UUID;\r | |
d933e70a JW |
91 | Index++;\r |
92 | OptList[Index] = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);\r | |
93 | \r | |
94 | //\r | |
95 | // Append UUID/Guid-based client identifier option\r | |
96 | //\r | |
142c00c3 | 97 | OptList[Index]->OpCode = DHCP4_TAG_UUID;\r |
d933e70a JW |
98 | OptList[Index]->Length = (UINT8) sizeof (HTTP_BOOT_DHCP4_OPTION_UUID);\r |
99 | OptEnt.Uuid = (HTTP_BOOT_DHCP4_OPTION_UUID *) OptList[Index]->Data;\r | |
100 | OptEnt.Uuid->Type = 0;\r | |
101 | if (EFI_ERROR (NetLibGetSystemGuid ((EFI_GUID *) OptEnt.Uuid->Guid))) {\r | |
102 | //\r | |
103 | // Zero the Guid to indicate NOT programable if failed to get system Guid.\r | |
104 | //\r | |
105 | ZeroMem (OptEnt.Uuid->Guid, sizeof (EFI_GUID));\r | |
106 | }\r | |
107 | Index++;\r | |
108 | OptList[Index] = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);\r | |
109 | \r | |
110 | //\r | |
111 | // Append client network device interface option\r | |
112 | //\r | |
142c00c3 | 113 | OptList[Index]->OpCode = DHCP4_TAG_UNDI;\r |
d933e70a JW |
114 | OptList[Index]->Length = (UINT8) sizeof (HTTP_BOOT_DHCP4_OPTION_UNDI);\r |
115 | OptEnt.Undi = (HTTP_BOOT_DHCP4_OPTION_UNDI *) OptList[Index]->Data;\r | |
116 | \r | |
117 | if (Private->Nii != NULL) {\r | |
118 | OptEnt.Undi->Type = Private->Nii->Type;\r | |
119 | OptEnt.Undi->MajorVer = Private->Nii->MajorVer;\r | |
120 | OptEnt.Undi->MinorVer = Private->Nii->MinorVer;\r | |
121 | } else {\r | |
122 | OptEnt.Undi->Type = DEFAULT_UNDI_TYPE;\r | |
123 | OptEnt.Undi->MajorVer = DEFAULT_UNDI_MAJOR;\r | |
124 | OptEnt.Undi->MinorVer = DEFAULT_UNDI_MINOR;\r | |
125 | }\r | |
126 | \r | |
127 | Index++;\r | |
128 | OptList[Index] = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);\r | |
129 | \r | |
130 | //\r | |
131 | // Append client system architecture option\r | |
132 | //\r | |
142c00c3 | 133 | OptList[Index]->OpCode = DHCP4_TAG_ARCH;\r |
d933e70a JW |
134 | OptList[Index]->Length = (UINT8) sizeof (HTTP_BOOT_DHCP4_OPTION_ARCH);\r |
135 | OptEnt.Arch = (HTTP_BOOT_DHCP4_OPTION_ARCH *) OptList[Index]->Data;\r | |
136 | Value = HTONS (EFI_HTTP_BOOT_CLIENT_SYSTEM_ARCHITECTURE);\r | |
137 | CopyMem (&OptEnt.Arch->Type, &Value, sizeof (UINT16));\r | |
138 | Index++;\r | |
139 | OptList[Index] = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);\r | |
140 | \r | |
141 | //\r | |
142 | // Append vendor class identify option\r | |
143 | //\r | |
142c00c3 | 144 | OptList[Index]->OpCode = DHCP4_TAG_VENDOR_CLASS_ID;\r |
d933e70a JW |
145 | OptList[Index]->Length = (UINT8) sizeof (HTTP_BOOT_DHCP4_OPTION_CLID);\r |
146 | OptEnt.Clid = (HTTP_BOOT_DHCP4_OPTION_CLID *) OptList[Index]->Data;\r | |
147 | CopyMem (\r | |
148 | OptEnt.Clid,\r | |
149 | DEFAULT_CLASS_ID_DATA,\r | |
150 | sizeof (HTTP_BOOT_DHCP4_OPTION_CLID)\r | |
151 | );\r | |
152 | HttpBootUintnToAscDecWithFormat (\r | |
153 | EFI_HTTP_BOOT_CLIENT_SYSTEM_ARCHITECTURE,\r | |
154 | OptEnt.Clid->ArchitectureType,\r | |
155 | sizeof (OptEnt.Clid->ArchitectureType)\r | |
156 | );\r | |
157 | \r | |
158 | if (Private->Nii != NULL) {\r | |
159 | CopyMem (OptEnt.Clid->InterfaceName, Private->Nii->StringId, sizeof (OptEnt.Clid->InterfaceName));\r | |
160 | HttpBootUintnToAscDecWithFormat (Private->Nii->MajorVer, OptEnt.Clid->UndiMajor, sizeof (OptEnt.Clid->UndiMajor));\r | |
161 | HttpBootUintnToAscDecWithFormat (Private->Nii->MinorVer, OptEnt.Clid->UndiMinor, sizeof (OptEnt.Clid->UndiMinor));\r | |
162 | }\r | |
163 | \r | |
164 | Index++;\r | |
165 | \r | |
166 | return Index;\r | |
167 | }\r | |
168 | \r | |
169 | /**\r | |
170 | Parse a certain dhcp4 option by OptTag in Buffer, and return with start pointer.\r | |
171 | \r | |
172 | @param[in] Buffer Pointer to the option buffer.\r | |
173 | @param[in] Length Length of the option buffer.\r | |
174 | @param[in] OptTag Tag of the required option.\r | |
175 | \r | |
176 | @retval NULL Failed to find the required option.\r | |
177 | @retval Others The position of the required option.\r | |
178 | \r | |
179 | **/\r | |
180 | EFI_DHCP4_PACKET_OPTION *\r | |
181 | HttpBootParseDhcp4Options (\r | |
182 | IN UINT8 *Buffer,\r | |
183 | IN UINT32 Length,\r | |
184 | IN UINT8 OptTag\r | |
185 | )\r | |
186 | {\r | |
187 | EFI_DHCP4_PACKET_OPTION *Option;\r | |
188 | UINT32 Offset;\r | |
189 | \r | |
190 | Option = (EFI_DHCP4_PACKET_OPTION *) Buffer;\r | |
191 | Offset = 0;\r | |
192 | \r | |
142c00c3 | 193 | while (Offset < Length && Option->OpCode != DHCP4_TAG_EOP) {\r |
d933e70a JW |
194 | \r |
195 | if (Option->OpCode == OptTag) {\r | |
196 | //\r | |
197 | // Found the required option.\r | |
198 | //\r | |
199 | return Option;\r | |
200 | }\r | |
201 | \r | |
202 | //\r | |
203 | // Skip the current option to the next.\r | |
204 | //\r | |
142c00c3 | 205 | if (Option->OpCode == DHCP4_TAG_PAD) {\r |
d933e70a JW |
206 | Offset++;\r |
207 | } else {\r | |
208 | Offset += Option->Length + 2;\r | |
209 | }\r | |
210 | \r | |
211 | Option = (EFI_DHCP4_PACKET_OPTION *) (Buffer + Offset);\r | |
212 | }\r | |
213 | \r | |
214 | return NULL;\r | |
215 | }\r | |
216 | \r | |
217 | /**\r | |
218 | Cache the DHCPv4 packet.\r | |
219 | \r | |
220 | @param[in] Dst Pointer to the cache buffer for DHCPv4 packet.\r | |
221 | @param[in] Src Pointer to the DHCPv4 packet to be cached.\r | |
222 | \r | |
a35dc649 FS |
223 | @retval EFI_SUCCESS Packet is copied.\r |
224 | @retval EFI_BUFFER_TOO_SMALL Cache buffer is not big enough to hold the packet.\r | |
225 | \r | |
d933e70a | 226 | **/\r |
a35dc649 | 227 | EFI_STATUS\r |
d933e70a JW |
228 | HttpBootCacheDhcp4Packet (\r |
229 | IN EFI_DHCP4_PACKET *Dst,\r | |
230 | IN EFI_DHCP4_PACKET *Src\r | |
231 | )\r | |
232 | {\r | |
a35dc649 FS |
233 | if (Dst->Size < Src->Length) {\r |
234 | return EFI_BUFFER_TOO_SMALL;\r | |
235 | }\r | |
d933e70a JW |
236 | \r |
237 | CopyMem (&Dst->Dhcp4, &Src->Dhcp4, Src->Length);\r | |
238 | Dst->Length = Src->Length;\r | |
a35dc649 FS |
239 | \r |
240 | return EFI_SUCCESS;\r | |
d933e70a JW |
241 | }\r |
242 | \r | |
243 | /**\r | |
244 | Parse the cached DHCPv4 packet, including all the options.\r | |
245 | \r | |
246 | @param[in] Cache4 Pointer to cached DHCPv4 packet.\r | |
247 | \r | |
248 | @retval EFI_SUCCESS Parsed the DHCPv4 packet successfully.\r | |
249 | @retval EFI_DEVICE_ERROR Failed to parse an invalid packet.\r | |
250 | \r | |
251 | **/\r | |
252 | EFI_STATUS\r | |
253 | HttpBootParseDhcp4Packet (\r | |
254 | IN HTTP_BOOT_DHCP4_PACKET_CACHE *Cache4\r | |
255 | )\r | |
256 | {\r | |
257 | EFI_DHCP4_PACKET *Offer;\r | |
258 | EFI_DHCP4_PACKET_OPTION **Options;\r | |
259 | UINTN Index;\r | |
260 | EFI_DHCP4_PACKET_OPTION *Option;\r | |
261 | BOOLEAN IsProxyOffer;\r | |
262 | BOOLEAN IsHttpOffer;\r | |
263 | BOOLEAN IsDnsOffer;\r | |
264 | BOOLEAN IpExpressedUri;\r | |
265 | UINT8 *Ptr8;\r | |
266 | EFI_STATUS Status;\r | |
267 | HTTP_BOOT_OFFER_TYPE OfferType;\r | |
268 | EFI_IPv4_ADDRESS IpAddr;\r | |
b7f28e1a | 269 | BOOLEAN FileFieldOverloaded;\r |
d933e70a JW |
270 | \r |
271 | IsDnsOffer = FALSE;\r | |
272 | IpExpressedUri = FALSE;\r | |
273 | IsProxyOffer = FALSE;\r | |
274 | IsHttpOffer = FALSE;\r | |
b7f28e1a | 275 | FileFieldOverloaded = FALSE;\r |
d933e70a JW |
276 | \r |
277 | ZeroMem (Cache4->OptList, sizeof (Cache4->OptList));\r | |
278 | \r | |
279 | Offer = &Cache4->Packet.Offer;\r | |
280 | Options = Cache4->OptList;\r | |
281 | \r | |
282 | //\r | |
283 | // Parse DHCPv4 options in this offer, and store the pointers.\r | |
284 | // First, try to parse DHCPv4 options from the DHCP optional parameters field.\r | |
285 | //\r | |
286 | for (Index = 0; Index < HTTP_BOOT_DHCP4_TAG_INDEX_MAX; Index++) {\r | |
287 | Options[Index] = HttpBootParseDhcp4Options (\r | |
288 | Offer->Dhcp4.Option,\r | |
289 | GET_OPTION_BUFFER_LEN (Offer),\r | |
290 | mInterestedDhcp4Tags[Index]\r | |
291 | );\r | |
292 | }\r | |
293 | //\r | |
294 | // Second, Check if bootfilename and serverhostname is overloaded to carry DHCP options refers to rfc-2132. \r | |
295 | // If yes, try to parse options from the BootFileName field, then ServerName field.\r | |
296 | //\r | |
297 | Option = Options[HTTP_BOOT_DHCP4_TAG_INDEX_OVERLOAD];\r | |
298 | if (Option != NULL) {\r | |
299 | if ((Option->Data[0] & HTTP_BOOT_DHCP4_OVERLOAD_FILE) != 0) {\r | |
b7f28e1a | 300 | FileFieldOverloaded = TRUE;\r |
d933e70a JW |
301 | for (Index = 0; Index < HTTP_BOOT_DHCP4_TAG_INDEX_MAX; Index++) {\r |
302 | if (Options[Index] == NULL) {\r | |
303 | Options[Index] = HttpBootParseDhcp4Options (\r | |
304 | (UINT8 *) Offer->Dhcp4.Header.BootFileName,\r | |
305 | sizeof (Offer->Dhcp4.Header.BootFileName),\r | |
306 | mInterestedDhcp4Tags[Index]\r | |
307 | );\r | |
308 | }\r | |
309 | }\r | |
310 | }\r | |
311 | if ((Option->Data[0] & HTTP_BOOT_DHCP4_OVERLOAD_SERVER_NAME) != 0) {\r | |
312 | for (Index = 0; Index < HTTP_BOOT_DHCP4_TAG_INDEX_MAX; Index++) {\r | |
313 | if (Options[Index] == NULL) {\r | |
314 | Options[Index] = HttpBootParseDhcp4Options (\r | |
315 | (UINT8 *) Offer->Dhcp4.Header.ServerName,\r | |
316 | sizeof (Offer->Dhcp4.Header.ServerName),\r | |
317 | mInterestedDhcp4Tags[Index]\r | |
318 | );\r | |
319 | }\r | |
320 | }\r | |
321 | }\r | |
322 | }\r | |
323 | \r | |
324 | //\r | |
325 | // The offer with "yiaddr" is a proxy offer.\r | |
326 | //\r | |
327 | if (Offer->Dhcp4.Header.YourAddr.Addr[0] == 0) {\r | |
328 | IsProxyOffer = TRUE;\r | |
329 | }\r | |
330 | \r | |
331 | //\r | |
b659408b | 332 | // The offer with "HTTPClient" is a Http offer.\r |
d933e70a JW |
333 | //\r |
334 | Option = Options[HTTP_BOOT_DHCP4_TAG_INDEX_CLASS_ID];\r | |
1ba4a4df LE |
335 | if ((Option != NULL) && (Option->Length >= 10) &&\r |
336 | (CompareMem (Option->Data, DEFAULT_CLASS_ID_DATA, 10) == 0)) {\r | |
d933e70a JW |
337 | IsHttpOffer = TRUE;\r |
338 | }\r | |
339 | \r | |
340 | //\r | |
341 | // The offer with Domain Server is a DNS offer.\r | |
342 | //\r | |
343 | Option = Options[HTTP_BOOT_DHCP4_TAG_INDEX_DNS_SERVER];\r | |
344 | if (Option != NULL) {\r | |
345 | IsDnsOffer = TRUE;\r | |
346 | }\r | |
347 | \r | |
348 | //\r | |
349 | // Parse boot file name:\r | |
350 | // Boot URI information is provided thru 'file' field in DHCP Header or option 67.\r | |
351 | // According to RFC 2132, boot file name should be read from DHCP option 67 (bootfile name) if present.\r | |
352 | // Otherwise, read from boot file field in DHCP header.\r | |
353 | //\r | |
354 | if (Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE] != NULL) {\r | |
355 | //\r | |
356 | // RFC 2132, Section 9.5 does not strictly state Bootfile name (option 67) is null\r | |
357 | // terminated string. So force to append null terminated character at the end of string.\r | |
358 | //\r | |
359 | Ptr8 = (UINT8*)&Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE]->Data[0];\r | |
360 | Ptr8 += Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE]->Length;\r | |
361 | if (*(Ptr8 - 1) != '\0') {\r | |
362 | *Ptr8 = '\0';\r | |
363 | }\r | |
b7f28e1a | 364 | } else if (!FileFieldOverloaded && Offer->Dhcp4.Header.BootFileName[0] != 0) {\r |
d933e70a JW |
365 | //\r |
366 | // If the bootfile is not present and bootfilename is present in DHCPv4 packet, just parse it.\r | |
367 | // Do not count dhcp option header here, or else will destroy the serverhostname.\r | |
368 | //\r | |
369 | Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE] = (EFI_DHCP4_PACKET_OPTION *)\r | |
370 | (&Offer->Dhcp4.Header.BootFileName[0] -\r | |
371 | OFFSET_OF (EFI_DHCP4_PACKET_OPTION, Data[0]));\r | |
372 | }\r | |
373 | \r | |
374 | //\r | |
375 | // Http offer must have a boot URI.\r | |
376 | //\r | |
377 | if (IsHttpOffer && Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE] == NULL) {\r | |
378 | return EFI_DEVICE_ERROR;\r | |
379 | }\r | |
380 | \r | |
381 | //\r | |
382 | // Try to retrieve the IP of HTTP server from URI. \r | |
383 | //\r | |
384 | if (IsHttpOffer) {\r | |
385 | Status = HttpParseUrl (\r | |
386 | (CHAR8*) Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE]->Data,\r | |
387 | (UINT32) AsciiStrLen ((CHAR8*) Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE]->Data),\r | |
388 | FALSE,\r | |
389 | &Cache4->UriParser\r | |
390 | );\r | |
391 | if (EFI_ERROR (Status)) {\r | |
392 | return EFI_DEVICE_ERROR;\r | |
393 | }\r | |
394 | \r | |
395 | Status = HttpUrlGetIp4 (\r | |
396 | (CHAR8*) Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE]->Data,\r | |
397 | Cache4->UriParser,\r | |
398 | &IpAddr\r | |
399 | );\r | |
400 | IpExpressedUri = !EFI_ERROR (Status);\r | |
401 | }\r | |
402 | \r | |
403 | //\r | |
404 | // Determine offer type of the DHCPv4 packet.\r | |
405 | //\r | |
406 | if (IsHttpOffer) {\r | |
407 | if (IpExpressedUri) {\r | |
fa848a40 FS |
408 | if (IsProxyOffer) {\r |
409 | OfferType = HttpOfferTypeProxyIpUri;\r | |
410 | } else {\r | |
411 | OfferType = IsDnsOffer ? HttpOfferTypeDhcpIpUriDns : HttpOfferTypeDhcpIpUri;\r | |
412 | }\r | |
d933e70a JW |
413 | } else {\r |
414 | if (!IsProxyOffer) {\r | |
415 | OfferType = IsDnsOffer ? HttpOfferTypeDhcpNameUriDns : HttpOfferTypeDhcpNameUri;\r | |
416 | } else {\r | |
417 | OfferType = HttpOfferTypeProxyNameUri;\r | |
418 | }\r | |
419 | }\r | |
420 | \r | |
421 | } else {\r | |
422 | if (!IsProxyOffer) {\r | |
423 | OfferType = IsDnsOffer ? HttpOfferTypeDhcpDns : HttpOfferTypeDhcpOnly;\r | |
424 | } else {\r | |
0dc59296 JW |
425 | if (Cache4->UriParser != NULL) {\r |
426 | FreePool (Cache4->UriParser);\r | |
427 | }\r | |
d933e70a JW |
428 | return EFI_DEVICE_ERROR;\r |
429 | }\r | |
430 | }\r | |
431 | \r | |
432 | Cache4->OfferType = OfferType;\r | |
433 | return EFI_SUCCESS;\r | |
434 | }\r | |
435 | \r | |
436 | /**\r | |
437 | Cache all the received DHCPv4 offers, and set OfferIndex and OfferCount.\r | |
438 | \r | |
439 | @param[in] Private Pointer to HTTP boot driver private data.\r | |
440 | @param[in] RcvdOffer Pointer to the received offer packet.\r | |
441 | \r | |
a35dc649 FS |
442 | @retval EFI_SUCCESS Cache and parse the packet successfully.\r |
443 | @retval Others Operation failed.\r | |
d933e70a | 444 | **/\r |
a35dc649 | 445 | EFI_STATUS\r |
d933e70a JW |
446 | HttpBootCacheDhcp4Offer (\r |
447 | IN HTTP_BOOT_PRIVATE_DATA *Private,\r | |
448 | IN EFI_DHCP4_PACKET *RcvdOffer\r | |
449 | )\r | |
450 | {\r | |
451 | HTTP_BOOT_DHCP4_PACKET_CACHE *Cache4;\r | |
452 | EFI_DHCP4_PACKET *Offer;\r | |
453 | HTTP_BOOT_OFFER_TYPE OfferType;\r | |
a35dc649 | 454 | EFI_STATUS Status;\r |
d933e70a JW |
455 | \r |
456 | ASSERT (Private->OfferNum < HTTP_BOOT_OFFER_MAX_NUM);\r | |
457 | Cache4 = &Private->OfferBuffer[Private->OfferNum].Dhcp4;\r | |
458 | Offer = &Cache4->Packet.Offer;\r | |
459 | \r | |
460 | //\r | |
461 | // Cache the content of DHCPv4 packet firstly.\r | |
462 | //\r | |
a35dc649 FS |
463 | Status = HttpBootCacheDhcp4Packet (Offer, RcvdOffer);\r |
464 | if (EFI_ERROR (Status)) {\r | |
465 | return Status;\r | |
466 | }\r | |
d933e70a JW |
467 | \r |
468 | //\r | |
469 | // Validate the DHCPv4 packet, and parse the options and offer type.\r | |
470 | //\r | |
471 | if (EFI_ERROR (HttpBootParseDhcp4Packet (Cache4))) {\r | |
a35dc649 | 472 | return EFI_ABORTED;\r |
d933e70a JW |
473 | }\r |
474 | \r | |
475 | //\r | |
476 | // Determine whether cache the current offer by type, and record OfferIndex and OfferCount.\r | |
477 | //\r | |
478 | OfferType = Cache4->OfferType;\r | |
479 | ASSERT (OfferType < HttpOfferTypeMax);\r | |
480 | ASSERT (Private->OfferCount[OfferType] < HTTP_BOOT_OFFER_MAX_NUM);\r | |
481 | Private->OfferIndex[OfferType][Private->OfferCount[OfferType]] = Private->OfferNum;\r | |
482 | Private->OfferCount[OfferType]++;\r | |
483 | Private->OfferNum++;\r | |
a35dc649 FS |
484 | \r |
485 | return EFI_SUCCESS;\r | |
d933e70a JW |
486 | }\r |
487 | \r | |
488 | /**\r | |
b659408b | 489 | Select an DHCPv4 or DHCP6 offer, and record SelectIndex and SelectProxyType.\r |
d933e70a JW |
490 | \r |
491 | @param[in] Private Pointer to HTTP boot driver private data.\r | |
492 | \r | |
493 | **/\r | |
494 | VOID\r | |
b659408b | 495 | HttpBootSelectDhcpOffer (\r |
d933e70a JW |
496 | IN HTTP_BOOT_PRIVATE_DATA *Private\r |
497 | )\r | |
498 | {\r | |
499 | Private->SelectIndex = 0;\r | |
500 | Private->SelectProxyType = HttpOfferTypeMax;\r | |
fa848a40 FS |
501 | \r |
502 | if (Private->FilePathUri != NULL) {\r | |
503 | //\r | |
504 | // We are in home environment, the URI is already specified.\r | |
505 | // Just need to choose a DHCP offer.\r | |
506 | // The offer with DNS server address takes priority here.\r | |
507 | //\r | |
508 | if (Private->OfferCount[HttpOfferTypeDhcpDns] > 0) {\r | |
509 | \r | |
510 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpDns][0] + 1;\r | |
511 | \r | |
512 | } else if (Private->OfferCount[HttpOfferTypeDhcpIpUriDns] > 0) {\r | |
d933e70a | 513 | \r |
fa848a40 FS |
514 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpIpUriDns][0] + 1;\r |
515 | \r | |
516 | } else if (Private->OfferCount[HttpOfferTypeDhcpNameUriDns] > 0) {\r | |
d933e70a | 517 | \r |
fa848a40 FS |
518 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpNameUriDns][0] + 1;\r |
519 | \r | |
520 | } else if (Private->OfferCount[HttpOfferTypeDhcpOnly] > 0) {\r | |
d933e70a | 521 | \r |
fa848a40 FS |
522 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpOnly][0] + 1;\r |
523 | \r | |
524 | } else if (Private->OfferCount[HttpOfferTypeDhcpIpUri] > 0) {\r | |
d933e70a | 525 | \r |
fa848a40 FS |
526 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpIpUri][0] + 1;\r |
527 | }\r | |
d933e70a | 528 | \r |
fa848a40 FS |
529 | } else {\r |
530 | //\r | |
531 | // We are in corporate environment.\r | |
532 | //\r | |
533 | // Priority1: HttpOfferTypeDhcpIpUri or HttpOfferTypeDhcpIpUriDns\r | |
534 | // Priority2: HttpOfferTypeDhcpNameUriDns \r | |
535 | // Priority3: HttpOfferTypeDhcpOnly + HttpOfferTypeProxyIpUri \r | |
536 | // Priority4: HttpOfferTypeDhcpDns + HttpOfferTypeProxyIpUri \r | |
537 | // Priority5: HttpOfferTypeDhcpDns + HttpOfferTypeProxyNameUri\r | |
538 | // Priority6: HttpOfferTypeDhcpDns + HttpOfferTypeDhcpNameUri \r | |
539 | // \r | |
540 | if (Private->OfferCount[HttpOfferTypeDhcpIpUri] > 0) {\r | |
541 | \r | |
542 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpIpUri][0] + 1;\r | |
543 | \r | |
544 | } else if (Private->OfferCount[HttpOfferTypeDhcpIpUriDns] > 0) {\r | |
545 | \r | |
546 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpIpUriDns][0] + 1;\r | |
547 | \r | |
548 | }else if (Private->OfferCount[HttpOfferTypeDhcpNameUriDns] > 0) {\r | |
d933e70a | 549 | \r |
fa848a40 FS |
550 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpNameUriDns][0] + 1;\r |
551 | \r | |
552 | } else if (Private->OfferCount[HttpOfferTypeDhcpOnly] > 0 &&\r | |
553 | Private->OfferCount[HttpOfferTypeProxyIpUri] > 0) {\r | |
554 | \r | |
555 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpOnly][0] + 1;\r | |
556 | Private->SelectProxyType = HttpOfferTypeProxyIpUri;\r | |
557 | \r | |
558 | } else if (Private->OfferCount[HttpOfferTypeDhcpDns] > 0 &&\r | |
559 | Private->OfferCount[HttpOfferTypeProxyIpUri] > 0) {\r | |
560 | \r | |
561 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpDns][0] + 1;\r | |
562 | Private->SelectProxyType = HttpOfferTypeProxyIpUri;\r | |
563 | \r | |
564 | } else if (Private->OfferCount[HttpOfferTypeDhcpDns] > 0 &&\r | |
565 | Private->OfferCount[HttpOfferTypeProxyNameUri] > 0) {\r | |
566 | \r | |
567 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpDns][0] + 1;\r | |
568 | Private->SelectProxyType = HttpOfferTypeProxyNameUri;\r | |
569 | \r | |
570 | } else if (Private->OfferCount[HttpOfferTypeDhcpDns] > 0 &&\r | |
571 | Private->OfferCount[HttpOfferTypeDhcpNameUri] > 0) {\r | |
572 | \r | |
573 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpDns][0] + 1;\r | |
574 | Private->SelectProxyType = HttpOfferTypeDhcpNameUri;\r | |
575 | }\r | |
d933e70a JW |
576 | }\r |
577 | }\r | |
578 | \r | |
579 | \r | |
580 | /**\r | |
581 | EFI_DHCP4_CALLBACK is provided by the consumer of the EFI DHCPv4 Protocol driver\r | |
582 | to intercept events that occurred in the configuration process.\r | |
583 | \r | |
584 | @param[in] This Pointer to the EFI DHCPv4 Protocol.\r | |
585 | @param[in] Context Pointer to the context set by EFI_DHCP4_PROTOCOL.Configure().\r | |
586 | @param[in] CurrentState The current operational state of the EFI DHCPv4 Protocol driver.\r | |
587 | @param[in] Dhcp4Event The event that occurs in the current state, which usually means a\r | |
588 | state transition.\r | |
589 | @param[in] Packet The DHCPv4 packet that is going to be sent or already received.\r | |
590 | @param[out] NewPacket The packet that is used to replace the above Packet.\r | |
591 | \r | |
592 | @retval EFI_SUCCESS Tells the EFI DHCPv4 Protocol driver to continue the DHCP process.\r | |
593 | @retval EFI_NOT_READY Only used in the Dhcp4Selecting state. The EFI DHCPv4 Protocol\r | |
594 | driver will continue to wait for more DHCPOFFER packets until the\r | |
595 | retry timeout expires.\r | |
596 | @retval EFI_ABORTED Tells the EFI DHCPv4 Protocol driver to abort the current process\r | |
597 | and return to the Dhcp4Init or Dhcp4InitReboot state.\r | |
598 | \r | |
599 | **/\r | |
600 | EFI_STATUS\r | |
601 | EFIAPI\r | |
602 | HttpBootDhcp4CallBack (\r | |
603 | IN EFI_DHCP4_PROTOCOL *This,\r | |
604 | IN VOID *Context,\r | |
605 | IN EFI_DHCP4_STATE CurrentState,\r | |
606 | IN EFI_DHCP4_EVENT Dhcp4Event,\r | |
607 | IN EFI_DHCP4_PACKET *Packet OPTIONAL,\r | |
608 | OUT EFI_DHCP4_PACKET **NewPacket OPTIONAL\r | |
609 | )\r | |
610 | {\r | |
611 | HTTP_BOOT_PRIVATE_DATA *Private;\r | |
612 | EFI_DHCP4_PACKET_OPTION *MaxMsgSize;\r | |
613 | UINT16 Value;\r | |
614 | EFI_STATUS Status;\r | |
95b5c32f | 615 | BOOLEAN Received;\r |
d933e70a | 616 | \r |
95b5c32f FS |
617 | if ((Dhcp4Event != Dhcp4SendDiscover) && \r |
618 | (Dhcp4Event != Dhcp4RcvdOffer) && \r | |
619 | (Dhcp4Event != Dhcp4SendRequest) && \r | |
620 | (Dhcp4Event != Dhcp4RcvdAck) && \r | |
621 | (Dhcp4Event != Dhcp4SelectOffer)) {\r | |
d933e70a JW |
622 | return EFI_SUCCESS;\r |
623 | }\r | |
624 | \r | |
625 | Private = (HTTP_BOOT_PRIVATE_DATA *) Context;\r | |
626 | \r | |
627 | //\r | |
628 | // Override the Maximum DHCP Message Size.\r | |
629 | //\r | |
630 | MaxMsgSize = HttpBootParseDhcp4Options (\r | |
631 | Packet->Dhcp4.Option,\r | |
632 | GET_OPTION_BUFFER_LEN (Packet),\r | |
142c00c3 | 633 | DHCP4_TAG_MAXMSG\r |
d933e70a JW |
634 | );\r |
635 | if (MaxMsgSize != NULL) {\r | |
636 | Value = HTONS (HTTP_BOOT_DHCP4_PACKET_MAX_SIZE);\r | |
637 | CopyMem (MaxMsgSize->Data, &Value, sizeof (Value));\r | |
638 | }\r | |
95b5c32f FS |
639 | \r |
640 | //\r | |
641 | // Callback to user if any packets sent or received.\r | |
642 | //\r | |
643 | if (Private->HttpBootCallback != NULL && Dhcp4Event != Dhcp4SelectOffer) {\r | |
644 | Received = (BOOLEAN) (Dhcp4Event == Dhcp4RcvdOffer || Dhcp4Event == Dhcp4RcvdAck);\r | |
645 | Status = Private->HttpBootCallback->Callback (\r | |
646 | Private->HttpBootCallback, \r | |
647 | HttpBootDhcp4,\r | |
648 | Received,\r | |
649 | Packet->Length,\r | |
650 | &Packet->Dhcp4\r | |
651 | );\r | |
652 | if (EFI_ERROR (Status)) {\r | |
653 | return EFI_ABORTED;\r | |
654 | }\r | |
655 | }\r | |
d933e70a JW |
656 | \r |
657 | Status = EFI_SUCCESS;\r | |
658 | switch (Dhcp4Event) {\r | |
659 | case Dhcp4RcvdOffer:\r | |
660 | Status = EFI_NOT_READY;\r | |
a35dc649 FS |
661 | if (Packet->Length > HTTP_BOOT_DHCP4_PACKET_MAX_SIZE) {\r |
662 | //\r | |
663 | // Ignore the incoming packets which exceed the maximum length.\r | |
664 | //\r | |
665 | break;\r | |
666 | }\r | |
d933e70a JW |
667 | if (Private->OfferNum < HTTP_BOOT_OFFER_MAX_NUM) {\r |
668 | //\r | |
669 | // Cache the DHCPv4 offers to OfferBuffer[] for select later, and record\r | |
670 | // the OfferIndex and OfferCount.\r | |
a35dc649 | 671 | // If error happens, just ignore this packet and continue to wait more offer.\r |
d933e70a JW |
672 | //\r |
673 | HttpBootCacheDhcp4Offer (Private, Packet);\r | |
674 | }\r | |
675 | break;\r | |
676 | \r | |
677 | case Dhcp4SelectOffer:\r | |
678 | //\r | |
679 | // Select offer according to the priority in UEFI spec, and record the SelectIndex \r | |
680 | // and SelectProxyType.\r | |
681 | //\r | |
b659408b | 682 | HttpBootSelectDhcpOffer (Private);\r |
d933e70a JW |
683 | \r |
684 | if (Private->SelectIndex == 0) {\r | |
685 | Status = EFI_ABORTED;\r | |
686 | } else {\r | |
687 | *NewPacket = &Private->OfferBuffer[Private->SelectIndex - 1].Dhcp4.Packet.Offer;\r | |
688 | }\r | |
689 | break;\r | |
690 | \r | |
691 | default:\r | |
692 | break;\r | |
693 | }\r | |
694 | \r | |
695 | return Status;\r | |
696 | }\r | |
697 | \r | |
698 | /**\r | |
699 | This function will register the IPv4 gateway address to the network device.\r | |
700 | \r | |
701 | @param[in] Private The pointer to HTTP_BOOT_PRIVATE_DATA.\r | |
702 | \r | |
703 | @retval EFI_SUCCESS The new IP configuration has been configured successfully.\r | |
704 | @retval Others Failed to configure the address.\r | |
705 | \r | |
706 | **/\r | |
707 | EFI_STATUS\r | |
708 | HttpBootRegisterIp4Gateway (\r | |
709 | IN HTTP_BOOT_PRIVATE_DATA *Private\r | |
710 | )\r | |
711 | {\r | |
712 | EFI_STATUS Status;\r | |
713 | EFI_IP4_CONFIG2_PROTOCOL *Ip4Config2;\r | |
714 | \r | |
715 | ASSERT (!Private->UsingIpv6);\r | |
716 | \r | |
717 | Ip4Config2 = Private->Ip4Config2;\r | |
718 | \r | |
719 | //\r | |
720 | // Configure the gateway if valid.\r | |
721 | //\r | |
722 | if (!EFI_IP4_EQUAL (&Private->GatewayIp, &mZeroIp4Addr)) {\r | |
723 | Status = Ip4Config2->SetData (\r | |
724 | Ip4Config2,\r | |
725 | Ip4Config2DataTypeGateway,\r | |
726 | sizeof (EFI_IPv4_ADDRESS),\r | |
727 | &Private->GatewayIp\r | |
728 | );\r | |
729 | if (EFI_ERROR (Status)) {\r | |
730 | return Status;\r | |
731 | }\r | |
732 | }\r | |
733 | \r | |
734 | return EFI_SUCCESS;\r | |
735 | }\r | |
736 | \r | |
737 | /**\r | |
738 | This function will register the default DNS addresses to the network device.\r | |
739 | \r | |
740 | @param[in] Private The pointer to HTTP_BOOT_PRIVATE_DATA.\r | |
741 | @param[in] DataLength Size of the buffer pointed to by DnsServerData in bytes.\r | |
742 | @param[in] DnsServerData Point a list of DNS server address in an array\r | |
743 | of EFI_IPv4_ADDRESS instances.\r | |
744 | \r | |
745 | @retval EFI_SUCCESS The DNS configuration has been configured successfully.\r | |
746 | @retval Others Failed to configure the address.\r | |
747 | \r | |
748 | **/\r | |
749 | EFI_STATUS\r | |
750 | HttpBootRegisterIp4Dns (\r | |
751 | IN HTTP_BOOT_PRIVATE_DATA *Private,\r | |
752 | IN UINTN DataLength,\r | |
753 | IN VOID *DnsServerData\r | |
754 | )\r | |
755 | {\r | |
756 | EFI_IP4_CONFIG2_PROTOCOL *Ip4Config2;\r | |
757 | \r | |
758 | ASSERT (!Private->UsingIpv6);\r | |
759 | \r | |
760 | Ip4Config2 = Private->Ip4Config2;\r | |
761 | \r | |
762 | return Ip4Config2->SetData (\r | |
763 | Ip4Config2,\r | |
764 | Ip4Config2DataTypeDnsServer,\r | |
765 | DataLength,\r | |
766 | DnsServerData\r | |
767 | );\r | |
768 | }\r | |
769 | \r | |
770 | \r | |
771 | /**\r | |
772 | This function will switch the IP4 configuration policy to Static.\r | |
773 | \r | |
774 | @param[in] Private Pointer to HTTP boot driver private data.\r | |
775 | \r | |
776 | @retval EFI_SUCCESS The policy is already configured to static.\r | |
777 | @retval Others Other error as indicated..\r | |
778 | \r | |
779 | **/\r | |
780 | EFI_STATUS\r | |
b659408b | 781 | HttpBootSetIp4Policy (\r |
d933e70a JW |
782 | IN HTTP_BOOT_PRIVATE_DATA *Private\r |
783 | )\r | |
784 | {\r | |
785 | EFI_IP4_CONFIG2_POLICY Policy;\r | |
786 | EFI_STATUS Status;\r | |
787 | EFI_IP4_CONFIG2_PROTOCOL *Ip4Config2;\r | |
788 | UINTN DataSize;\r | |
789 | \r | |
790 | Ip4Config2 = Private->Ip4Config2;\r | |
791 | \r | |
792 | DataSize = sizeof (EFI_IP4_CONFIG2_POLICY);\r | |
793 | Status = Ip4Config2->GetData (\r | |
794 | Ip4Config2,\r | |
795 | Ip4Config2DataTypePolicy,\r | |
796 | &DataSize,\r | |
797 | &Policy\r | |
798 | );\r | |
799 | if (EFI_ERROR (Status)) {\r | |
800 | return Status;\r | |
801 | }\r | |
802 | \r | |
803 | if (Policy != Ip4Config2PolicyStatic) {\r | |
804 | Policy = Ip4Config2PolicyStatic;\r | |
805 | Status= Ip4Config2->SetData (\r | |
806 | Ip4Config2,\r | |
807 | Ip4Config2DataTypePolicy,\r | |
808 | sizeof (EFI_IP4_CONFIG2_POLICY),\r | |
809 | &Policy\r | |
810 | );\r | |
811 | if (EFI_ERROR (Status)) {\r | |
812 | return Status;\r | |
813 | } \r | |
814 | }\r | |
815 | \r | |
816 | return EFI_SUCCESS;\r | |
817 | }\r | |
818 | \r | |
819 | /**\r | |
820 | Start the D.O.R.A DHCPv4 process to acquire the IPv4 address and other Http boot information.\r | |
821 | \r | |
822 | @param[in] Private Pointer to HTTP boot driver private data.\r | |
823 | \r | |
824 | @retval EFI_SUCCESS The D.O.R.A process successfully finished.\r | |
825 | @retval Others Failed to finish the D.O.R.A process.\r | |
826 | \r | |
827 | **/\r | |
828 | EFI_STATUS\r | |
829 | HttpBootDhcp4Dora (\r | |
830 | IN HTTP_BOOT_PRIVATE_DATA *Private\r | |
831 | )\r | |
832 | {\r | |
833 | EFI_DHCP4_PROTOCOL *Dhcp4;\r | |
834 | UINT32 OptCount;\r | |
835 | EFI_DHCP4_PACKET_OPTION *OptList[HTTP_BOOT_DHCP4_OPTION_MAX_NUM];\r | |
836 | UINT8 Buffer[HTTP_BOOT_DHCP4_OPTION_MAX_SIZE];\r | |
837 | EFI_DHCP4_CONFIG_DATA Config;\r | |
838 | EFI_STATUS Status;\r | |
839 | EFI_DHCP4_MODE_DATA Mode;\r | |
840 | \r | |
841 | Dhcp4 = Private->Dhcp4;\r | |
842 | ASSERT (Dhcp4 != NULL);\r | |
843 | \r | |
b659408b | 844 | Status = HttpBootSetIp4Policy (Private);\r |
d933e70a JW |
845 | if (EFI_ERROR (Status)) {\r |
846 | return Status;\r | |
847 | }\r | |
848 | \r | |
849 | //\r | |
850 | // Build option list for the request packet.\r | |
851 | //\r | |
852 | OptCount = HttpBootBuildDhcp4Options (Private, OptList, Buffer);\r | |
853 | ASSERT (OptCount > 0);\r | |
854 | \r | |
855 | ZeroMem (&Config, sizeof(Config));\r | |
856 | Config.OptionCount = OptCount;\r | |
857 | Config.OptionList = OptList;\r | |
858 | Config.Dhcp4Callback = HttpBootDhcp4CallBack;\r | |
859 | Config.CallbackContext = Private;\r | |
860 | Config.DiscoverTryCount = HTTP_BOOT_DHCP_RETRIES;\r | |
861 | Config.DiscoverTimeout = mHttpDhcpTimeout;\r | |
862 | \r | |
863 | //\r | |
864 | // Configure the DHCPv4 instance for HTTP boot.\r | |
865 | //\r | |
866 | Status = Dhcp4->Configure (Dhcp4, &Config);\r | |
867 | if (EFI_ERROR (Status)) {\r | |
868 | goto ON_EXIT;\r | |
869 | }\r | |
870 | \r | |
871 | //\r | |
872 | // Initialize the record fields for DHCPv4 offer in private data.\r | |
873 | //\r | |
874 | Private->OfferNum = 0;\r | |
875 | ZeroMem (Private->OfferCount, sizeof (Private->OfferCount));\r | |
876 | ZeroMem (Private->OfferIndex, sizeof (Private->OfferIndex));\r | |
877 | \r | |
878 | //\r | |
879 | // Start DHCPv4 D.O.R.A. process to acquire IPv4 address.\r | |
880 | //\r | |
881 | Status = Dhcp4->Start (Dhcp4, NULL);\r | |
882 | if (EFI_ERROR (Status)) {\r | |
883 | goto ON_EXIT;\r | |
884 | }\r | |
885 | \r | |
886 | //\r | |
887 | // Get the acquired IPv4 address and store them.\r | |
888 | //\r | |
889 | Status = Dhcp4->GetModeData (Dhcp4, &Mode);\r | |
890 | if (EFI_ERROR (Status)) {\r | |
891 | goto ON_EXIT;\r | |
892 | }\r | |
893 | \r | |
894 | ASSERT (Mode.State == Dhcp4Bound);\r | |
895 | CopyMem (&Private->StationIp, &Mode.ClientAddress, sizeof (EFI_IPv4_ADDRESS));\r | |
896 | CopyMem (&Private->SubnetMask, &Mode.SubnetMask, sizeof (EFI_IPv4_ADDRESS));\r | |
897 | CopyMem (&Private->GatewayIp, &Mode.RouterAddress, sizeof (EFI_IPv4_ADDRESS));\r | |
898 | \r | |
899 | Status = HttpBootRegisterIp4Gateway (Private);\r | |
900 | if (EFI_ERROR (Status)) {\r | |
901 | goto ON_EXIT;\r | |
902 | }\r | |
903 | \r | |
904 | AsciiPrint ("\n Station IP address is ");\r | |
905 | HttpBootShowIp4Addr (&Private->StationIp.v4);\r | |
906 | AsciiPrint ("\n");\r | |
907 | \r | |
908 | ON_EXIT:\r | |
909 | if (EFI_ERROR (Status)) {\r | |
910 | Dhcp4->Stop (Dhcp4);\r | |
911 | Dhcp4->Configure (Dhcp4, NULL);\r | |
912 | } else {\r | |
913 | ZeroMem (&Config, sizeof (EFI_DHCP4_CONFIG_DATA));\r | |
914 | Dhcp4->Configure (Dhcp4, &Config);\r | |
915 | }\r | |
916 | \r | |
917 | return Status;\r | |
918 | }\r |