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d933e70a JW |
1 | /** @file\r |
2 | Functions implementation related with DHCPv4 for HTTP boot driver.\r | |
3 | \r | |
f75a7f56 | 4 | Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>\r |
ecf98fbc | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
d933e70a JW |
6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include "HttpBootDxe.h"\r | |
10 | \r | |
11 | //\r | |
12 | // This is a map from the interested DHCP4 option tags' index to the tag value.\r | |
13 | //\r | |
14 | UINT8 mInterestedDhcp4Tags[HTTP_BOOT_DHCP4_TAG_INDEX_MAX] = {\r | |
142c00c3 ZL |
15 | DHCP4_TAG_BOOTFILE_LEN,\r |
16 | DHCP4_TAG_OVERLOAD,\r | |
17 | DHCP4_TAG_MSG_TYPE,\r | |
18 | DHCP4_TAG_SERVER_ID,\r | |
19 | DHCP4_TAG_VENDOR_CLASS_ID,\r | |
20 | DHCP4_TAG_BOOTFILE,\r | |
21 | DHCP4_TAG_DNS_SERVER\r | |
d933e70a JW |
22 | };\r |
23 | \r | |
24 | //\r | |
25 | // There are 4 times retries with the value of 4, 8, 16 and 32, refers to UEFI 2.5 spec.\r | |
26 | //\r | |
27 | UINT32 mHttpDhcpTimeout[4] = {4, 8, 16, 32};\r | |
28 | \r | |
29 | /**\r | |
30 | Build the options buffer for the DHCPv4 request packet.\r | |
31 | \r | |
32 | @param[in] Private Pointer to HTTP boot driver private data.\r | |
33 | @param[out] OptList Pointer to the option pointer array.\r | |
34 | @param[in] Buffer Pointer to the buffer to contain the option list.\r | |
35 | \r | |
36 | @return Index The count of the built-in options.\r | |
37 | \r | |
38 | **/\r | |
39 | UINT32\r | |
40 | HttpBootBuildDhcp4Options (\r | |
41 | IN HTTP_BOOT_PRIVATE_DATA *Private,\r | |
42 | OUT EFI_DHCP4_PACKET_OPTION **OptList,\r | |
43 | IN UINT8 *Buffer\r | |
44 | )\r | |
45 | {\r | |
46 | HTTP_BOOT_DHCP4_OPTION_ENTRY OptEnt;\r | |
47 | UINT16 Value;\r | |
48 | UINT32 Index;\r | |
49 | \r | |
50 | Index = 0;\r | |
51 | OptList[0] = (EFI_DHCP4_PACKET_OPTION *) Buffer;\r | |
52 | \r | |
53 | //\r | |
54 | // Append parameter request list option.\r | |
55 | //\r | |
142c00c3 | 56 | OptList[Index]->OpCode = DHCP4_TAG_PARA_LIST;\r |
d933e70a JW |
57 | OptList[Index]->Length = 27;\r |
58 | OptEnt.Para = (HTTP_BOOT_DHCP4_OPTION_PARA *) OptList[Index]->Data;\r | |
142c00c3 ZL |
59 | OptEnt.Para->ParaList[0] = DHCP4_TAG_NETMASK;\r |
60 | OptEnt.Para->ParaList[1] = DHCP4_TAG_TIME_OFFSET;\r | |
61 | OptEnt.Para->ParaList[2] = DHCP4_TAG_ROUTER;\r | |
62 | OptEnt.Para->ParaList[3] = DHCP4_TAG_TIME_SERVER;\r | |
63 | OptEnt.Para->ParaList[4] = DHCP4_TAG_NAME_SERVER;\r | |
64 | OptEnt.Para->ParaList[5] = DHCP4_TAG_DNS_SERVER;\r | |
65 | OptEnt.Para->ParaList[6] = DHCP4_TAG_HOSTNAME;\r | |
66 | OptEnt.Para->ParaList[7] = DHCP4_TAG_BOOTFILE_LEN;\r | |
67 | OptEnt.Para->ParaList[8] = DHCP4_TAG_DOMAINNAME;\r | |
68 | OptEnt.Para->ParaList[9] = DHCP4_TAG_ROOTPATH;\r | |
69 | OptEnt.Para->ParaList[10] = DHCP4_TAG_EXTEND_PATH;\r | |
70 | OptEnt.Para->ParaList[11] = DHCP4_TAG_EMTU;\r | |
71 | OptEnt.Para->ParaList[12] = DHCP4_TAG_TTL;\r | |
72 | OptEnt.Para->ParaList[13] = DHCP4_TAG_BROADCAST;\r | |
73 | OptEnt.Para->ParaList[14] = DHCP4_TAG_NIS_DOMAIN;\r | |
74 | OptEnt.Para->ParaList[15] = DHCP4_TAG_NIS_SERVER;\r | |
75 | OptEnt.Para->ParaList[16] = DHCP4_TAG_NTP_SERVER;\r | |
76 | OptEnt.Para->ParaList[17] = DHCP4_TAG_VENDOR;\r | |
77 | OptEnt.Para->ParaList[18] = DHCP4_TAG_REQUEST_IP;\r | |
78 | OptEnt.Para->ParaList[19] = DHCP4_TAG_LEASE;\r | |
79 | OptEnt.Para->ParaList[20] = DHCP4_TAG_SERVER_ID;\r | |
80 | OptEnt.Para->ParaList[21] = DHCP4_TAG_T1;\r | |
81 | OptEnt.Para->ParaList[22] = DHCP4_TAG_T2;\r | |
82 | OptEnt.Para->ParaList[23] = DHCP4_TAG_VENDOR_CLASS_ID;\r | |
83 | OptEnt.Para->ParaList[25] = DHCP4_TAG_BOOTFILE;\r | |
84 | OptEnt.Para->ParaList[26] = DHCP4_TAG_UUID;\r | |
d933e70a JW |
85 | Index++;\r |
86 | OptList[Index] = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);\r | |
87 | \r | |
88 | //\r | |
89 | // Append UUID/Guid-based client identifier option\r | |
90 | //\r | |
142c00c3 | 91 | OptList[Index]->OpCode = DHCP4_TAG_UUID;\r |
d933e70a JW |
92 | OptList[Index]->Length = (UINT8) sizeof (HTTP_BOOT_DHCP4_OPTION_UUID);\r |
93 | OptEnt.Uuid = (HTTP_BOOT_DHCP4_OPTION_UUID *) OptList[Index]->Data;\r | |
94 | OptEnt.Uuid->Type = 0;\r | |
95 | if (EFI_ERROR (NetLibGetSystemGuid ((EFI_GUID *) OptEnt.Uuid->Guid))) {\r | |
96 | //\r | |
97 | // Zero the Guid to indicate NOT programable if failed to get system Guid.\r | |
98 | //\r | |
99 | ZeroMem (OptEnt.Uuid->Guid, sizeof (EFI_GUID));\r | |
100 | }\r | |
101 | Index++;\r | |
102 | OptList[Index] = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);\r | |
103 | \r | |
104 | //\r | |
105 | // Append client network device interface option\r | |
106 | //\r | |
142c00c3 | 107 | OptList[Index]->OpCode = DHCP4_TAG_UNDI;\r |
d933e70a JW |
108 | OptList[Index]->Length = (UINT8) sizeof (HTTP_BOOT_DHCP4_OPTION_UNDI);\r |
109 | OptEnt.Undi = (HTTP_BOOT_DHCP4_OPTION_UNDI *) OptList[Index]->Data;\r | |
110 | \r | |
111 | if (Private->Nii != NULL) {\r | |
112 | OptEnt.Undi->Type = Private->Nii->Type;\r | |
113 | OptEnt.Undi->MajorVer = Private->Nii->MajorVer;\r | |
114 | OptEnt.Undi->MinorVer = Private->Nii->MinorVer;\r | |
115 | } else {\r | |
116 | OptEnt.Undi->Type = DEFAULT_UNDI_TYPE;\r | |
117 | OptEnt.Undi->MajorVer = DEFAULT_UNDI_MAJOR;\r | |
118 | OptEnt.Undi->MinorVer = DEFAULT_UNDI_MINOR;\r | |
119 | }\r | |
120 | \r | |
121 | Index++;\r | |
122 | OptList[Index] = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);\r | |
123 | \r | |
124 | //\r | |
125 | // Append client system architecture option\r | |
126 | //\r | |
142c00c3 | 127 | OptList[Index]->OpCode = DHCP4_TAG_ARCH;\r |
d933e70a JW |
128 | OptList[Index]->Length = (UINT8) sizeof (HTTP_BOOT_DHCP4_OPTION_ARCH);\r |
129 | OptEnt.Arch = (HTTP_BOOT_DHCP4_OPTION_ARCH *) OptList[Index]->Data;\r | |
130 | Value = HTONS (EFI_HTTP_BOOT_CLIENT_SYSTEM_ARCHITECTURE);\r | |
131 | CopyMem (&OptEnt.Arch->Type, &Value, sizeof (UINT16));\r | |
132 | Index++;\r | |
133 | OptList[Index] = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);\r | |
134 | \r | |
135 | //\r | |
136 | // Append vendor class identify option\r | |
137 | //\r | |
142c00c3 | 138 | OptList[Index]->OpCode = DHCP4_TAG_VENDOR_CLASS_ID;\r |
d933e70a JW |
139 | OptList[Index]->Length = (UINT8) sizeof (HTTP_BOOT_DHCP4_OPTION_CLID);\r |
140 | OptEnt.Clid = (HTTP_BOOT_DHCP4_OPTION_CLID *) OptList[Index]->Data;\r | |
141 | CopyMem (\r | |
142 | OptEnt.Clid,\r | |
143 | DEFAULT_CLASS_ID_DATA,\r | |
144 | sizeof (HTTP_BOOT_DHCP4_OPTION_CLID)\r | |
145 | );\r | |
146 | HttpBootUintnToAscDecWithFormat (\r | |
147 | EFI_HTTP_BOOT_CLIENT_SYSTEM_ARCHITECTURE,\r | |
148 | OptEnt.Clid->ArchitectureType,\r | |
149 | sizeof (OptEnt.Clid->ArchitectureType)\r | |
150 | );\r | |
151 | \r | |
152 | if (Private->Nii != NULL) {\r | |
153 | CopyMem (OptEnt.Clid->InterfaceName, Private->Nii->StringId, sizeof (OptEnt.Clid->InterfaceName));\r | |
154 | HttpBootUintnToAscDecWithFormat (Private->Nii->MajorVer, OptEnt.Clid->UndiMajor, sizeof (OptEnt.Clid->UndiMajor));\r | |
155 | HttpBootUintnToAscDecWithFormat (Private->Nii->MinorVer, OptEnt.Clid->UndiMinor, sizeof (OptEnt.Clid->UndiMinor));\r | |
156 | }\r | |
157 | \r | |
158 | Index++;\r | |
159 | \r | |
160 | return Index;\r | |
161 | }\r | |
162 | \r | |
163 | /**\r | |
164 | Parse a certain dhcp4 option by OptTag in Buffer, and return with start pointer.\r | |
165 | \r | |
166 | @param[in] Buffer Pointer to the option buffer.\r | |
167 | @param[in] Length Length of the option buffer.\r | |
168 | @param[in] OptTag Tag of the required option.\r | |
169 | \r | |
170 | @retval NULL Failed to find the required option.\r | |
171 | @retval Others The position of the required option.\r | |
172 | \r | |
173 | **/\r | |
174 | EFI_DHCP4_PACKET_OPTION *\r | |
175 | HttpBootParseDhcp4Options (\r | |
176 | IN UINT8 *Buffer,\r | |
177 | IN UINT32 Length,\r | |
178 | IN UINT8 OptTag\r | |
179 | )\r | |
180 | {\r | |
181 | EFI_DHCP4_PACKET_OPTION *Option;\r | |
182 | UINT32 Offset;\r | |
183 | \r | |
184 | Option = (EFI_DHCP4_PACKET_OPTION *) Buffer;\r | |
185 | Offset = 0;\r | |
186 | \r | |
142c00c3 | 187 | while (Offset < Length && Option->OpCode != DHCP4_TAG_EOP) {\r |
d933e70a JW |
188 | \r |
189 | if (Option->OpCode == OptTag) {\r | |
190 | //\r | |
191 | // Found the required option.\r | |
192 | //\r | |
193 | return Option;\r | |
194 | }\r | |
195 | \r | |
196 | //\r | |
197 | // Skip the current option to the next.\r | |
198 | //\r | |
142c00c3 | 199 | if (Option->OpCode == DHCP4_TAG_PAD) {\r |
d933e70a JW |
200 | Offset++;\r |
201 | } else {\r | |
202 | Offset += Option->Length + 2;\r | |
203 | }\r | |
204 | \r | |
205 | Option = (EFI_DHCP4_PACKET_OPTION *) (Buffer + Offset);\r | |
206 | }\r | |
207 | \r | |
208 | return NULL;\r | |
209 | }\r | |
210 | \r | |
211 | /**\r | |
212 | Cache the DHCPv4 packet.\r | |
213 | \r | |
214 | @param[in] Dst Pointer to the cache buffer for DHCPv4 packet.\r | |
215 | @param[in] Src Pointer to the DHCPv4 packet to be cached.\r | |
216 | \r | |
a35dc649 FS |
217 | @retval EFI_SUCCESS Packet is copied.\r |
218 | @retval EFI_BUFFER_TOO_SMALL Cache buffer is not big enough to hold the packet.\r | |
219 | \r | |
d933e70a | 220 | **/\r |
a35dc649 | 221 | EFI_STATUS\r |
d933e70a JW |
222 | HttpBootCacheDhcp4Packet (\r |
223 | IN EFI_DHCP4_PACKET *Dst,\r | |
224 | IN EFI_DHCP4_PACKET *Src\r | |
225 | )\r | |
226 | {\r | |
a35dc649 FS |
227 | if (Dst->Size < Src->Length) {\r |
228 | return EFI_BUFFER_TOO_SMALL;\r | |
229 | }\r | |
d933e70a JW |
230 | \r |
231 | CopyMem (&Dst->Dhcp4, &Src->Dhcp4, Src->Length);\r | |
232 | Dst->Length = Src->Length;\r | |
a35dc649 FS |
233 | \r |
234 | return EFI_SUCCESS;\r | |
d933e70a JW |
235 | }\r |
236 | \r | |
237 | /**\r | |
238 | Parse the cached DHCPv4 packet, including all the options.\r | |
239 | \r | |
240 | @param[in] Cache4 Pointer to cached DHCPv4 packet.\r | |
241 | \r | |
242 | @retval EFI_SUCCESS Parsed the DHCPv4 packet successfully.\r | |
243 | @retval EFI_DEVICE_ERROR Failed to parse an invalid packet.\r | |
244 | \r | |
245 | **/\r | |
246 | EFI_STATUS\r | |
247 | HttpBootParseDhcp4Packet (\r | |
248 | IN HTTP_BOOT_DHCP4_PACKET_CACHE *Cache4\r | |
249 | )\r | |
250 | {\r | |
251 | EFI_DHCP4_PACKET *Offer;\r | |
252 | EFI_DHCP4_PACKET_OPTION **Options;\r | |
253 | UINTN Index;\r | |
254 | EFI_DHCP4_PACKET_OPTION *Option;\r | |
255 | BOOLEAN IsProxyOffer;\r | |
256 | BOOLEAN IsHttpOffer;\r | |
257 | BOOLEAN IsDnsOffer;\r | |
258 | BOOLEAN IpExpressedUri;\r | |
259 | UINT8 *Ptr8;\r | |
260 | EFI_STATUS Status;\r | |
261 | HTTP_BOOT_OFFER_TYPE OfferType;\r | |
262 | EFI_IPv4_ADDRESS IpAddr;\r | |
b7f28e1a | 263 | BOOLEAN FileFieldOverloaded;\r |
f75a7f56 | 264 | \r |
d933e70a JW |
265 | IsDnsOffer = FALSE;\r |
266 | IpExpressedUri = FALSE;\r | |
267 | IsProxyOffer = FALSE;\r | |
268 | IsHttpOffer = FALSE;\r | |
b7f28e1a | 269 | FileFieldOverloaded = FALSE;\r |
d933e70a JW |
270 | \r |
271 | ZeroMem (Cache4->OptList, sizeof (Cache4->OptList));\r | |
272 | \r | |
273 | Offer = &Cache4->Packet.Offer;\r | |
274 | Options = Cache4->OptList;\r | |
275 | \r | |
276 | //\r | |
277 | // Parse DHCPv4 options in this offer, and store the pointers.\r | |
278 | // First, try to parse DHCPv4 options from the DHCP optional parameters field.\r | |
279 | //\r | |
280 | for (Index = 0; Index < HTTP_BOOT_DHCP4_TAG_INDEX_MAX; Index++) {\r | |
281 | Options[Index] = HttpBootParseDhcp4Options (\r | |
282 | Offer->Dhcp4.Option,\r | |
283 | GET_OPTION_BUFFER_LEN (Offer),\r | |
284 | mInterestedDhcp4Tags[Index]\r | |
285 | );\r | |
286 | }\r | |
287 | //\r | |
f75a7f56 | 288 | // Second, Check if bootfilename and serverhostname is overloaded to carry DHCP options refers to rfc-2132.\r |
d933e70a JW |
289 | // If yes, try to parse options from the BootFileName field, then ServerName field.\r |
290 | //\r | |
291 | Option = Options[HTTP_BOOT_DHCP4_TAG_INDEX_OVERLOAD];\r | |
292 | if (Option != NULL) {\r | |
293 | if ((Option->Data[0] & HTTP_BOOT_DHCP4_OVERLOAD_FILE) != 0) {\r | |
b7f28e1a | 294 | FileFieldOverloaded = TRUE;\r |
d933e70a JW |
295 | for (Index = 0; Index < HTTP_BOOT_DHCP4_TAG_INDEX_MAX; Index++) {\r |
296 | if (Options[Index] == NULL) {\r | |
297 | Options[Index] = HttpBootParseDhcp4Options (\r | |
298 | (UINT8 *) Offer->Dhcp4.Header.BootFileName,\r | |
299 | sizeof (Offer->Dhcp4.Header.BootFileName),\r | |
300 | mInterestedDhcp4Tags[Index]\r | |
301 | );\r | |
302 | }\r | |
303 | }\r | |
304 | }\r | |
305 | if ((Option->Data[0] & HTTP_BOOT_DHCP4_OVERLOAD_SERVER_NAME) != 0) {\r | |
306 | for (Index = 0; Index < HTTP_BOOT_DHCP4_TAG_INDEX_MAX; Index++) {\r | |
307 | if (Options[Index] == NULL) {\r | |
308 | Options[Index] = HttpBootParseDhcp4Options (\r | |
309 | (UINT8 *) Offer->Dhcp4.Header.ServerName,\r | |
310 | sizeof (Offer->Dhcp4.Header.ServerName),\r | |
311 | mInterestedDhcp4Tags[Index]\r | |
312 | );\r | |
313 | }\r | |
314 | }\r | |
315 | }\r | |
316 | }\r | |
317 | \r | |
318 | //\r | |
319 | // The offer with "yiaddr" is a proxy offer.\r | |
320 | //\r | |
321 | if (Offer->Dhcp4.Header.YourAddr.Addr[0] == 0) {\r | |
322 | IsProxyOffer = TRUE;\r | |
323 | }\r | |
324 | \r | |
325 | //\r | |
b659408b | 326 | // The offer with "HTTPClient" is a Http offer.\r |
d933e70a JW |
327 | //\r |
328 | Option = Options[HTTP_BOOT_DHCP4_TAG_INDEX_CLASS_ID];\r | |
1ba4a4df LE |
329 | if ((Option != NULL) && (Option->Length >= 10) &&\r |
330 | (CompareMem (Option->Data, DEFAULT_CLASS_ID_DATA, 10) == 0)) {\r | |
d933e70a JW |
331 | IsHttpOffer = TRUE;\r |
332 | }\r | |
333 | \r | |
334 | //\r | |
335 | // The offer with Domain Server is a DNS offer.\r | |
336 | //\r | |
337 | Option = Options[HTTP_BOOT_DHCP4_TAG_INDEX_DNS_SERVER];\r | |
338 | if (Option != NULL) {\r | |
339 | IsDnsOffer = TRUE;\r | |
340 | }\r | |
341 | \r | |
342 | //\r | |
343 | // Parse boot file name:\r | |
344 | // Boot URI information is provided thru 'file' field in DHCP Header or option 67.\r | |
345 | // According to RFC 2132, boot file name should be read from DHCP option 67 (bootfile name) if present.\r | |
346 | // Otherwise, read from boot file field in DHCP header.\r | |
347 | //\r | |
348 | if (Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE] != NULL) {\r | |
349 | //\r | |
350 | // RFC 2132, Section 9.5 does not strictly state Bootfile name (option 67) is null\r | |
351 | // terminated string. So force to append null terminated character at the end of string.\r | |
352 | //\r | |
353 | Ptr8 = (UINT8*)&Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE]->Data[0];\r | |
354 | Ptr8 += Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE]->Length;\r | |
355 | if (*(Ptr8 - 1) != '\0') {\r | |
356 | *Ptr8 = '\0';\r | |
357 | }\r | |
b7f28e1a | 358 | } else if (!FileFieldOverloaded && Offer->Dhcp4.Header.BootFileName[0] != 0) {\r |
d933e70a JW |
359 | //\r |
360 | // If the bootfile is not present and bootfilename is present in DHCPv4 packet, just parse it.\r | |
361 | // Do not count dhcp option header here, or else will destroy the serverhostname.\r | |
362 | //\r | |
363 | Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE] = (EFI_DHCP4_PACKET_OPTION *)\r | |
364 | (&Offer->Dhcp4.Header.BootFileName[0] -\r | |
365 | OFFSET_OF (EFI_DHCP4_PACKET_OPTION, Data[0]));\r | |
366 | }\r | |
367 | \r | |
368 | //\r | |
369 | // Http offer must have a boot URI.\r | |
370 | //\r | |
371 | if (IsHttpOffer && Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE] == NULL) {\r | |
372 | return EFI_DEVICE_ERROR;\r | |
373 | }\r | |
374 | \r | |
375 | //\r | |
f75a7f56 | 376 | // Try to retrieve the IP of HTTP server from URI.\r |
d933e70a JW |
377 | //\r |
378 | if (IsHttpOffer) {\r | |
379 | Status = HttpParseUrl (\r | |
380 | (CHAR8*) Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE]->Data,\r | |
381 | (UINT32) AsciiStrLen ((CHAR8*) Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE]->Data),\r | |
382 | FALSE,\r | |
383 | &Cache4->UriParser\r | |
384 | );\r | |
385 | if (EFI_ERROR (Status)) {\r | |
386 | return EFI_DEVICE_ERROR;\r | |
387 | }\r | |
388 | \r | |
389 | Status = HttpUrlGetIp4 (\r | |
390 | (CHAR8*) Options[HTTP_BOOT_DHCP4_TAG_INDEX_BOOTFILE]->Data,\r | |
391 | Cache4->UriParser,\r | |
392 | &IpAddr\r | |
393 | );\r | |
394 | IpExpressedUri = !EFI_ERROR (Status);\r | |
395 | }\r | |
396 | \r | |
397 | //\r | |
398 | // Determine offer type of the DHCPv4 packet.\r | |
399 | //\r | |
400 | if (IsHttpOffer) {\r | |
401 | if (IpExpressedUri) {\r | |
fa848a40 FS |
402 | if (IsProxyOffer) {\r |
403 | OfferType = HttpOfferTypeProxyIpUri;\r | |
404 | } else {\r | |
405 | OfferType = IsDnsOffer ? HttpOfferTypeDhcpIpUriDns : HttpOfferTypeDhcpIpUri;\r | |
406 | }\r | |
d933e70a JW |
407 | } else {\r |
408 | if (!IsProxyOffer) {\r | |
409 | OfferType = IsDnsOffer ? HttpOfferTypeDhcpNameUriDns : HttpOfferTypeDhcpNameUri;\r | |
410 | } else {\r | |
411 | OfferType = HttpOfferTypeProxyNameUri;\r | |
412 | }\r | |
413 | }\r | |
414 | \r | |
415 | } else {\r | |
416 | if (!IsProxyOffer) {\r | |
417 | OfferType = IsDnsOffer ? HttpOfferTypeDhcpDns : HttpOfferTypeDhcpOnly;\r | |
418 | } else {\r | |
0dc59296 JW |
419 | if (Cache4->UriParser != NULL) {\r |
420 | FreePool (Cache4->UriParser);\r | |
421 | }\r | |
d933e70a JW |
422 | return EFI_DEVICE_ERROR;\r |
423 | }\r | |
424 | }\r | |
f75a7f56 | 425 | \r |
d933e70a JW |
426 | Cache4->OfferType = OfferType;\r |
427 | return EFI_SUCCESS;\r | |
428 | }\r | |
429 | \r | |
430 | /**\r | |
431 | Cache all the received DHCPv4 offers, and set OfferIndex and OfferCount.\r | |
432 | \r | |
433 | @param[in] Private Pointer to HTTP boot driver private data.\r | |
434 | @param[in] RcvdOffer Pointer to the received offer packet.\r | |
435 | \r | |
a35dc649 FS |
436 | @retval EFI_SUCCESS Cache and parse the packet successfully.\r |
437 | @retval Others Operation failed.\r | |
d933e70a | 438 | **/\r |
a35dc649 | 439 | EFI_STATUS\r |
d933e70a JW |
440 | HttpBootCacheDhcp4Offer (\r |
441 | IN HTTP_BOOT_PRIVATE_DATA *Private,\r | |
442 | IN EFI_DHCP4_PACKET *RcvdOffer\r | |
443 | )\r | |
444 | {\r | |
445 | HTTP_BOOT_DHCP4_PACKET_CACHE *Cache4;\r | |
446 | EFI_DHCP4_PACKET *Offer;\r | |
447 | HTTP_BOOT_OFFER_TYPE OfferType;\r | |
a35dc649 | 448 | EFI_STATUS Status;\r |
d933e70a JW |
449 | \r |
450 | ASSERT (Private->OfferNum < HTTP_BOOT_OFFER_MAX_NUM);\r | |
451 | Cache4 = &Private->OfferBuffer[Private->OfferNum].Dhcp4;\r | |
452 | Offer = &Cache4->Packet.Offer;\r | |
453 | \r | |
454 | //\r | |
455 | // Cache the content of DHCPv4 packet firstly.\r | |
456 | //\r | |
a35dc649 FS |
457 | Status = HttpBootCacheDhcp4Packet (Offer, RcvdOffer);\r |
458 | if (EFI_ERROR (Status)) {\r | |
459 | return Status;\r | |
460 | }\r | |
d933e70a JW |
461 | \r |
462 | //\r | |
463 | // Validate the DHCPv4 packet, and parse the options and offer type.\r | |
464 | //\r | |
465 | if (EFI_ERROR (HttpBootParseDhcp4Packet (Cache4))) {\r | |
a35dc649 | 466 | return EFI_ABORTED;\r |
d933e70a JW |
467 | }\r |
468 | \r | |
469 | //\r | |
470 | // Determine whether cache the current offer by type, and record OfferIndex and OfferCount.\r | |
471 | //\r | |
472 | OfferType = Cache4->OfferType;\r | |
473 | ASSERT (OfferType < HttpOfferTypeMax);\r | |
474 | ASSERT (Private->OfferCount[OfferType] < HTTP_BOOT_OFFER_MAX_NUM);\r | |
475 | Private->OfferIndex[OfferType][Private->OfferCount[OfferType]] = Private->OfferNum;\r | |
476 | Private->OfferCount[OfferType]++;\r | |
477 | Private->OfferNum++;\r | |
a35dc649 FS |
478 | \r |
479 | return EFI_SUCCESS;\r | |
d933e70a JW |
480 | }\r |
481 | \r | |
482 | /**\r | |
b659408b | 483 | Select an DHCPv4 or DHCP6 offer, and record SelectIndex and SelectProxyType.\r |
d933e70a JW |
484 | \r |
485 | @param[in] Private Pointer to HTTP boot driver private data.\r | |
486 | \r | |
487 | **/\r | |
488 | VOID\r | |
b659408b | 489 | HttpBootSelectDhcpOffer (\r |
d933e70a JW |
490 | IN HTTP_BOOT_PRIVATE_DATA *Private\r |
491 | )\r | |
492 | {\r | |
493 | Private->SelectIndex = 0;\r | |
494 | Private->SelectProxyType = HttpOfferTypeMax;\r | |
fa848a40 FS |
495 | \r |
496 | if (Private->FilePathUri != NULL) {\r | |
497 | //\r | |
498 | // We are in home environment, the URI is already specified.\r | |
499 | // Just need to choose a DHCP offer.\r | |
500 | // The offer with DNS server address takes priority here.\r | |
501 | //\r | |
502 | if (Private->OfferCount[HttpOfferTypeDhcpDns] > 0) {\r | |
f75a7f56 | 503 | \r |
fa848a40 | 504 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpDns][0] + 1;\r |
f75a7f56 | 505 | \r |
fa848a40 | 506 | } else if (Private->OfferCount[HttpOfferTypeDhcpIpUriDns] > 0) {\r |
f75a7f56 | 507 | \r |
fa848a40 | 508 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpIpUriDns][0] + 1;\r |
f75a7f56 | 509 | \r |
fa848a40 | 510 | } else if (Private->OfferCount[HttpOfferTypeDhcpNameUriDns] > 0) {\r |
f75a7f56 | 511 | \r |
fa848a40 | 512 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpNameUriDns][0] + 1;\r |
f75a7f56 | 513 | \r |
fa848a40 | 514 | } else if (Private->OfferCount[HttpOfferTypeDhcpOnly] > 0) {\r |
f75a7f56 | 515 | \r |
fa848a40 | 516 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpOnly][0] + 1;\r |
f75a7f56 | 517 | \r |
fa848a40 | 518 | } else if (Private->OfferCount[HttpOfferTypeDhcpIpUri] > 0) {\r |
f75a7f56 | 519 | \r |
fa848a40 FS |
520 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpIpUri][0] + 1;\r |
521 | }\r | |
f75a7f56 | 522 | \r |
fa848a40 FS |
523 | } else {\r |
524 | //\r | |
525 | // We are in corporate environment.\r | |
526 | //\r | |
527 | // Priority1: HttpOfferTypeDhcpIpUri or HttpOfferTypeDhcpIpUriDns\r | |
f75a7f56 LG |
528 | // Priority2: HttpOfferTypeDhcpNameUriDns\r |
529 | // Priority3: HttpOfferTypeDhcpOnly + HttpOfferTypeProxyIpUri\r | |
530 | // Priority4: HttpOfferTypeDhcpDns + HttpOfferTypeProxyIpUri\r | |
fa848a40 | 531 | // Priority5: HttpOfferTypeDhcpDns + HttpOfferTypeProxyNameUri\r |
f75a7f56 LG |
532 | // Priority6: HttpOfferTypeDhcpDns + HttpOfferTypeDhcpNameUri\r |
533 | //\r | |
fa848a40 | 534 | if (Private->OfferCount[HttpOfferTypeDhcpIpUri] > 0) {\r |
f75a7f56 | 535 | \r |
fa848a40 | 536 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpIpUri][0] + 1;\r |
f75a7f56 | 537 | \r |
fa848a40 | 538 | } else if (Private->OfferCount[HttpOfferTypeDhcpIpUriDns] > 0) {\r |
f75a7f56 | 539 | \r |
fa848a40 | 540 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpIpUriDns][0] + 1;\r |
f75a7f56 | 541 | \r |
fa848a40 | 542 | }else if (Private->OfferCount[HttpOfferTypeDhcpNameUriDns] > 0) {\r |
f75a7f56 | 543 | \r |
fa848a40 | 544 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpNameUriDns][0] + 1;\r |
f75a7f56 | 545 | \r |
fa848a40 FS |
546 | } else if (Private->OfferCount[HttpOfferTypeDhcpOnly] > 0 &&\r |
547 | Private->OfferCount[HttpOfferTypeProxyIpUri] > 0) {\r | |
f75a7f56 | 548 | \r |
fa848a40 FS |
549 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpOnly][0] + 1;\r |
550 | Private->SelectProxyType = HttpOfferTypeProxyIpUri;\r | |
f75a7f56 | 551 | \r |
fa848a40 FS |
552 | } else if (Private->OfferCount[HttpOfferTypeDhcpDns] > 0 &&\r |
553 | Private->OfferCount[HttpOfferTypeProxyIpUri] > 0) {\r | |
f75a7f56 | 554 | \r |
fa848a40 FS |
555 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpDns][0] + 1;\r |
556 | Private->SelectProxyType = HttpOfferTypeProxyIpUri;\r | |
f75a7f56 | 557 | \r |
fa848a40 FS |
558 | } else if (Private->OfferCount[HttpOfferTypeDhcpDns] > 0 &&\r |
559 | Private->OfferCount[HttpOfferTypeProxyNameUri] > 0) {\r | |
f75a7f56 | 560 | \r |
fa848a40 FS |
561 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpDns][0] + 1;\r |
562 | Private->SelectProxyType = HttpOfferTypeProxyNameUri;\r | |
f75a7f56 | 563 | \r |
fa848a40 FS |
564 | } else if (Private->OfferCount[HttpOfferTypeDhcpDns] > 0 &&\r |
565 | Private->OfferCount[HttpOfferTypeDhcpNameUri] > 0) {\r | |
f75a7f56 | 566 | \r |
fa848a40 FS |
567 | Private->SelectIndex = Private->OfferIndex[HttpOfferTypeDhcpDns][0] + 1;\r |
568 | Private->SelectProxyType = HttpOfferTypeDhcpNameUri;\r | |
569 | }\r | |
d933e70a JW |
570 | }\r |
571 | }\r | |
572 | \r | |
573 | \r | |
574 | /**\r | |
575 | EFI_DHCP4_CALLBACK is provided by the consumer of the EFI DHCPv4 Protocol driver\r | |
576 | to intercept events that occurred in the configuration process.\r | |
577 | \r | |
578 | @param[in] This Pointer to the EFI DHCPv4 Protocol.\r | |
579 | @param[in] Context Pointer to the context set by EFI_DHCP4_PROTOCOL.Configure().\r | |
580 | @param[in] CurrentState The current operational state of the EFI DHCPv4 Protocol driver.\r | |
581 | @param[in] Dhcp4Event The event that occurs in the current state, which usually means a\r | |
582 | state transition.\r | |
583 | @param[in] Packet The DHCPv4 packet that is going to be sent or already received.\r | |
584 | @param[out] NewPacket The packet that is used to replace the above Packet.\r | |
585 | \r | |
586 | @retval EFI_SUCCESS Tells the EFI DHCPv4 Protocol driver to continue the DHCP process.\r | |
587 | @retval EFI_NOT_READY Only used in the Dhcp4Selecting state. The EFI DHCPv4 Protocol\r | |
588 | driver will continue to wait for more DHCPOFFER packets until the\r | |
589 | retry timeout expires.\r | |
590 | @retval EFI_ABORTED Tells the EFI DHCPv4 Protocol driver to abort the current process\r | |
591 | and return to the Dhcp4Init or Dhcp4InitReboot state.\r | |
592 | \r | |
593 | **/\r | |
594 | EFI_STATUS\r | |
595 | EFIAPI\r | |
596 | HttpBootDhcp4CallBack (\r | |
597 | IN EFI_DHCP4_PROTOCOL *This,\r | |
598 | IN VOID *Context,\r | |
599 | IN EFI_DHCP4_STATE CurrentState,\r | |
600 | IN EFI_DHCP4_EVENT Dhcp4Event,\r | |
601 | IN EFI_DHCP4_PACKET *Packet OPTIONAL,\r | |
602 | OUT EFI_DHCP4_PACKET **NewPacket OPTIONAL\r | |
603 | )\r | |
604 | {\r | |
605 | HTTP_BOOT_PRIVATE_DATA *Private;\r | |
606 | EFI_DHCP4_PACKET_OPTION *MaxMsgSize;\r | |
607 | UINT16 Value;\r | |
608 | EFI_STATUS Status;\r | |
95b5c32f | 609 | BOOLEAN Received;\r |
d933e70a | 610 | \r |
f75a7f56 LG |
611 | if ((Dhcp4Event != Dhcp4SendDiscover) &&\r |
612 | (Dhcp4Event != Dhcp4RcvdOffer) &&\r | |
613 | (Dhcp4Event != Dhcp4SendRequest) &&\r | |
614 | (Dhcp4Event != Dhcp4RcvdAck) &&\r | |
95b5c32f | 615 | (Dhcp4Event != Dhcp4SelectOffer)) {\r |
d933e70a JW |
616 | return EFI_SUCCESS;\r |
617 | }\r | |
f75a7f56 | 618 | \r |
d933e70a JW |
619 | Private = (HTTP_BOOT_PRIVATE_DATA *) Context;\r |
620 | \r | |
621 | //\r | |
622 | // Override the Maximum DHCP Message Size.\r | |
623 | //\r | |
624 | MaxMsgSize = HttpBootParseDhcp4Options (\r | |
625 | Packet->Dhcp4.Option,\r | |
626 | GET_OPTION_BUFFER_LEN (Packet),\r | |
142c00c3 | 627 | DHCP4_TAG_MAXMSG\r |
d933e70a JW |
628 | );\r |
629 | if (MaxMsgSize != NULL) {\r | |
630 | Value = HTONS (HTTP_BOOT_DHCP4_PACKET_MAX_SIZE);\r | |
631 | CopyMem (MaxMsgSize->Data, &Value, sizeof (Value));\r | |
632 | }\r | |
f75a7f56 | 633 | \r |
95b5c32f FS |
634 | //\r |
635 | // Callback to user if any packets sent or received.\r | |
636 | //\r | |
637 | if (Private->HttpBootCallback != NULL && Dhcp4Event != Dhcp4SelectOffer) {\r | |
638 | Received = (BOOLEAN) (Dhcp4Event == Dhcp4RcvdOffer || Dhcp4Event == Dhcp4RcvdAck);\r | |
639 | Status = Private->HttpBootCallback->Callback (\r | |
f75a7f56 | 640 | Private->HttpBootCallback,\r |
95b5c32f FS |
641 | HttpBootDhcp4,\r |
642 | Received,\r | |
643 | Packet->Length,\r | |
644 | &Packet->Dhcp4\r | |
645 | );\r | |
646 | if (EFI_ERROR (Status)) {\r | |
647 | return EFI_ABORTED;\r | |
648 | }\r | |
649 | }\r | |
d933e70a JW |
650 | \r |
651 | Status = EFI_SUCCESS;\r | |
652 | switch (Dhcp4Event) {\r | |
653 | case Dhcp4RcvdOffer:\r | |
654 | Status = EFI_NOT_READY;\r | |
a35dc649 FS |
655 | if (Packet->Length > HTTP_BOOT_DHCP4_PACKET_MAX_SIZE) {\r |
656 | //\r | |
657 | // Ignore the incoming packets which exceed the maximum length.\r | |
658 | //\r | |
659 | break;\r | |
660 | }\r | |
d933e70a JW |
661 | if (Private->OfferNum < HTTP_BOOT_OFFER_MAX_NUM) {\r |
662 | //\r | |
663 | // Cache the DHCPv4 offers to OfferBuffer[] for select later, and record\r | |
664 | // the OfferIndex and OfferCount.\r | |
a35dc649 | 665 | // If error happens, just ignore this packet and continue to wait more offer.\r |
d933e70a JW |
666 | //\r |
667 | HttpBootCacheDhcp4Offer (Private, Packet);\r | |
668 | }\r | |
669 | break;\r | |
670 | \r | |
671 | case Dhcp4SelectOffer:\r | |
672 | //\r | |
f75a7f56 | 673 | // Select offer according to the priority in UEFI spec, and record the SelectIndex\r |
d933e70a JW |
674 | // and SelectProxyType.\r |
675 | //\r | |
b659408b | 676 | HttpBootSelectDhcpOffer (Private);\r |
d933e70a JW |
677 | \r |
678 | if (Private->SelectIndex == 0) {\r | |
679 | Status = EFI_ABORTED;\r | |
680 | } else {\r | |
681 | *NewPacket = &Private->OfferBuffer[Private->SelectIndex - 1].Dhcp4.Packet.Offer;\r | |
682 | }\r | |
683 | break;\r | |
f75a7f56 | 684 | \r |
d933e70a JW |
685 | default:\r |
686 | break;\r | |
687 | }\r | |
688 | \r | |
689 | return Status;\r | |
690 | }\r | |
691 | \r | |
692 | /**\r | |
693 | This function will register the IPv4 gateway address to the network device.\r | |
f75a7f56 | 694 | \r |
d933e70a JW |
695 | @param[in] Private The pointer to HTTP_BOOT_PRIVATE_DATA.\r |
696 | \r | |
697 | @retval EFI_SUCCESS The new IP configuration has been configured successfully.\r | |
698 | @retval Others Failed to configure the address.\r | |
699 | \r | |
700 | **/\r | |
701 | EFI_STATUS\r | |
702 | HttpBootRegisterIp4Gateway (\r | |
703 | IN HTTP_BOOT_PRIVATE_DATA *Private\r | |
704 | )\r | |
705 | {\r | |
706 | EFI_STATUS Status;\r | |
707 | EFI_IP4_CONFIG2_PROTOCOL *Ip4Config2;\r | |
708 | \r | |
709 | ASSERT (!Private->UsingIpv6);\r | |
710 | \r | |
711 | Ip4Config2 = Private->Ip4Config2;\r | |
712 | \r | |
713 | //\r | |
714 | // Configure the gateway if valid.\r | |
715 | //\r | |
716 | if (!EFI_IP4_EQUAL (&Private->GatewayIp, &mZeroIp4Addr)) {\r | |
717 | Status = Ip4Config2->SetData (\r | |
718 | Ip4Config2,\r | |
719 | Ip4Config2DataTypeGateway,\r | |
720 | sizeof (EFI_IPv4_ADDRESS),\r | |
721 | &Private->GatewayIp\r | |
722 | );\r | |
723 | if (EFI_ERROR (Status)) {\r | |
724 | return Status;\r | |
725 | }\r | |
726 | }\r | |
727 | \r | |
728 | return EFI_SUCCESS;\r | |
729 | }\r | |
730 | \r | |
731 | /**\r | |
732 | This function will register the default DNS addresses to the network device.\r | |
f75a7f56 | 733 | \r |
d933e70a JW |
734 | @param[in] Private The pointer to HTTP_BOOT_PRIVATE_DATA.\r |
735 | @param[in] DataLength Size of the buffer pointed to by DnsServerData in bytes.\r | |
736 | @param[in] DnsServerData Point a list of DNS server address in an array\r | |
737 | of EFI_IPv4_ADDRESS instances.\r | |
738 | \r | |
739 | @retval EFI_SUCCESS The DNS configuration has been configured successfully.\r | |
740 | @retval Others Failed to configure the address.\r | |
741 | \r | |
742 | **/\r | |
743 | EFI_STATUS\r | |
744 | HttpBootRegisterIp4Dns (\r | |
745 | IN HTTP_BOOT_PRIVATE_DATA *Private,\r | |
746 | IN UINTN DataLength,\r | |
747 | IN VOID *DnsServerData\r | |
748 | )\r | |
749 | {\r | |
750 | EFI_IP4_CONFIG2_PROTOCOL *Ip4Config2;\r | |
f75a7f56 | 751 | \r |
d933e70a JW |
752 | ASSERT (!Private->UsingIpv6);\r |
753 | \r | |
754 | Ip4Config2 = Private->Ip4Config2;\r | |
f75a7f56 | 755 | \r |
d933e70a JW |
756 | return Ip4Config2->SetData (\r |
757 | Ip4Config2,\r | |
758 | Ip4Config2DataTypeDnsServer,\r | |
759 | DataLength,\r | |
760 | DnsServerData\r | |
761 | );\r | |
762 | }\r | |
763 | \r | |
764 | \r | |
765 | /**\r | |
766 | This function will switch the IP4 configuration policy to Static.\r | |
767 | \r | |
768 | @param[in] Private Pointer to HTTP boot driver private data.\r | |
769 | \r | |
770 | @retval EFI_SUCCESS The policy is already configured to static.\r | |
771 | @retval Others Other error as indicated..\r | |
772 | \r | |
773 | **/\r | |
774 | EFI_STATUS\r | |
b659408b | 775 | HttpBootSetIp4Policy (\r |
d933e70a JW |
776 | IN HTTP_BOOT_PRIVATE_DATA *Private\r |
777 | )\r | |
778 | {\r | |
779 | EFI_IP4_CONFIG2_POLICY Policy;\r | |
780 | EFI_STATUS Status;\r | |
781 | EFI_IP4_CONFIG2_PROTOCOL *Ip4Config2;\r | |
782 | UINTN DataSize;\r | |
783 | \r | |
784 | Ip4Config2 = Private->Ip4Config2;\r | |
785 | \r | |
786 | DataSize = sizeof (EFI_IP4_CONFIG2_POLICY);\r | |
787 | Status = Ip4Config2->GetData (\r | |
788 | Ip4Config2,\r | |
789 | Ip4Config2DataTypePolicy,\r | |
790 | &DataSize,\r | |
791 | &Policy\r | |
792 | );\r | |
793 | if (EFI_ERROR (Status)) {\r | |
794 | return Status;\r | |
795 | }\r | |
796 | \r | |
797 | if (Policy != Ip4Config2PolicyStatic) {\r | |
798 | Policy = Ip4Config2PolicyStatic;\r | |
799 | Status= Ip4Config2->SetData (\r | |
800 | Ip4Config2,\r | |
801 | Ip4Config2DataTypePolicy,\r | |
802 | sizeof (EFI_IP4_CONFIG2_POLICY),\r | |
803 | &Policy\r | |
804 | );\r | |
805 | if (EFI_ERROR (Status)) {\r | |
806 | return Status;\r | |
f75a7f56 | 807 | }\r |
d933e70a JW |
808 | }\r |
809 | \r | |
810 | return EFI_SUCCESS;\r | |
811 | }\r | |
812 | \r | |
813 | /**\r | |
814 | Start the D.O.R.A DHCPv4 process to acquire the IPv4 address and other Http boot information.\r | |
815 | \r | |
816 | @param[in] Private Pointer to HTTP boot driver private data.\r | |
817 | \r | |
818 | @retval EFI_SUCCESS The D.O.R.A process successfully finished.\r | |
819 | @retval Others Failed to finish the D.O.R.A process.\r | |
820 | \r | |
821 | **/\r | |
822 | EFI_STATUS\r | |
823 | HttpBootDhcp4Dora (\r | |
824 | IN HTTP_BOOT_PRIVATE_DATA *Private\r | |
825 | )\r | |
826 | {\r | |
827 | EFI_DHCP4_PROTOCOL *Dhcp4;\r | |
828 | UINT32 OptCount;\r | |
829 | EFI_DHCP4_PACKET_OPTION *OptList[HTTP_BOOT_DHCP4_OPTION_MAX_NUM];\r | |
830 | UINT8 Buffer[HTTP_BOOT_DHCP4_OPTION_MAX_SIZE];\r | |
831 | EFI_DHCP4_CONFIG_DATA Config;\r | |
832 | EFI_STATUS Status;\r | |
833 | EFI_DHCP4_MODE_DATA Mode;\r | |
f75a7f56 | 834 | \r |
d933e70a JW |
835 | Dhcp4 = Private->Dhcp4;\r |
836 | ASSERT (Dhcp4 != NULL);\r | |
837 | \r | |
b659408b | 838 | Status = HttpBootSetIp4Policy (Private);\r |
d933e70a JW |
839 | if (EFI_ERROR (Status)) {\r |
840 | return Status;\r | |
841 | }\r | |
842 | \r | |
843 | //\r | |
844 | // Build option list for the request packet.\r | |
845 | //\r | |
846 | OptCount = HttpBootBuildDhcp4Options (Private, OptList, Buffer);\r | |
847 | ASSERT (OptCount > 0);\r | |
848 | \r | |
849 | ZeroMem (&Config, sizeof(Config));\r | |
850 | Config.OptionCount = OptCount;\r | |
851 | Config.OptionList = OptList;\r | |
852 | Config.Dhcp4Callback = HttpBootDhcp4CallBack;\r | |
853 | Config.CallbackContext = Private;\r | |
854 | Config.DiscoverTryCount = HTTP_BOOT_DHCP_RETRIES;\r | |
855 | Config.DiscoverTimeout = mHttpDhcpTimeout;\r | |
856 | \r | |
857 | //\r | |
858 | // Configure the DHCPv4 instance for HTTP boot.\r | |
859 | //\r | |
860 | Status = Dhcp4->Configure (Dhcp4, &Config);\r | |
861 | if (EFI_ERROR (Status)) {\r | |
862 | goto ON_EXIT;\r | |
863 | }\r | |
864 | \r | |
865 | //\r | |
866 | // Initialize the record fields for DHCPv4 offer in private data.\r | |
867 | //\r | |
868 | Private->OfferNum = 0;\r | |
869 | ZeroMem (Private->OfferCount, sizeof (Private->OfferCount));\r | |
870 | ZeroMem (Private->OfferIndex, sizeof (Private->OfferIndex));\r | |
871 | \r | |
872 | //\r | |
873 | // Start DHCPv4 D.O.R.A. process to acquire IPv4 address.\r | |
874 | //\r | |
875 | Status = Dhcp4->Start (Dhcp4, NULL);\r | |
876 | if (EFI_ERROR (Status)) {\r | |
877 | goto ON_EXIT;\r | |
878 | }\r | |
879 | \r | |
880 | //\r | |
881 | // Get the acquired IPv4 address and store them.\r | |
882 | //\r | |
883 | Status = Dhcp4->GetModeData (Dhcp4, &Mode);\r | |
884 | if (EFI_ERROR (Status)) {\r | |
885 | goto ON_EXIT;\r | |
886 | }\r | |
887 | \r | |
888 | ASSERT (Mode.State == Dhcp4Bound);\r | |
889 | CopyMem (&Private->StationIp, &Mode.ClientAddress, sizeof (EFI_IPv4_ADDRESS));\r | |
890 | CopyMem (&Private->SubnetMask, &Mode.SubnetMask, sizeof (EFI_IPv4_ADDRESS));\r | |
891 | CopyMem (&Private->GatewayIp, &Mode.RouterAddress, sizeof (EFI_IPv4_ADDRESS));\r | |
892 | \r | |
893 | Status = HttpBootRegisterIp4Gateway (Private);\r | |
894 | if (EFI_ERROR (Status)) {\r | |
895 | goto ON_EXIT;\r | |
896 | }\r | |
897 | \r | |
898 | AsciiPrint ("\n Station IP address is ");\r | |
899 | HttpBootShowIp4Addr (&Private->StationIp.v4);\r | |
900 | AsciiPrint ("\n");\r | |
901 | \r | |
902 | ON_EXIT:\r | |
903 | if (EFI_ERROR (Status)) {\r | |
904 | Dhcp4->Stop (Dhcp4);\r | |
905 | Dhcp4->Configure (Dhcp4, NULL);\r | |
906 | } else {\r | |
907 | ZeroMem (&Config, sizeof (EFI_DHCP4_CONFIG_DATA));\r | |
908 | Dhcp4->Configure (Dhcp4, &Config);\r | |
909 | }\r | |
910 | \r | |
911 | return Status;\r | |
912 | }\r |