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878ddf1f | 1 | /*++\r |
2 | \r | |
e5f461a8 | 3 | Copyright (c) 2006 - 2007, Intel Corporation\r |
4 | All rights reserved. This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
878ddf1f | 11 | \r |
12 | Module Name:\r | |
13 | support.c\r | |
e5f461a8 | 14 | \r |
878ddf1f | 15 | Abstract:\r |
16 | Miscellaneous support routines for PxeDhcp4 protocol.\r | |
17 | \r | |
18 | --*/\r | |
19 | \r | |
20 | \r | |
21 | #include "PxeDhcp4.h"\r | |
22 | \r | |
23 | #define DebugPrint(x)\r | |
24 | //\r | |
25 | // #define DebugPrint(x) Aprint x\r | |
26 | //\r | |
27 | \r | |
28 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
29 | UINT16\r | |
30 | htons (\r | |
31 | UINTN n\r | |
32 | )\r | |
33 | {\r | |
34 | return (UINT16) ((n >> 8) | (n << 8));\r | |
35 | }\r | |
36 | \r | |
37 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
38 | UINT32\r | |
39 | htonl (\r | |
40 | UINTN n\r | |
41 | )\r | |
42 | {\r | |
43 | return (UINT32) ((n >> 24) | ((n >> 8) & 0xFF00) | ((n & 0xFF00) << 8) | (n << 24));\r | |
44 | }\r | |
45 | \r | |
46 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
47 | VOID\r | |
48 | EFIAPI\r | |
49 | timeout_notify (\r | |
50 | IN EFI_EVENT Event,\r | |
51 | IN VOID *Context\r | |
52 | )\r | |
53 | {\r | |
54 | ASSERT (Context);\r | |
55 | \r | |
56 | if (Context != NULL) {\r | |
57 | ((PXE_DHCP4_PRIVATE_DATA *) Context)->TimeoutOccurred = TRUE;\r | |
58 | }\r | |
59 | }\r | |
60 | \r | |
61 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
62 | VOID\r | |
63 | EFIAPI\r | |
64 | periodic_notify (\r | |
65 | IN EFI_EVENT Event,\r | |
66 | IN VOID *Context\r | |
67 | )\r | |
68 | {\r | |
69 | ASSERT (Context);\r | |
70 | \r | |
71 | if (Context != NULL) {\r | |
72 | ((PXE_DHCP4_PRIVATE_DATA *) Context)->PeriodicOccurred = TRUE;\r | |
73 | }\r | |
74 | }\r | |
75 | \r | |
76 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
77 | EFI_STATUS\r | |
78 | find_opt (\r | |
79 | IN DHCP4_PACKET *Packet,\r | |
80 | IN UINT8 OpCode,\r | |
81 | IN UINTN Skip,\r | |
82 | OUT DHCP4_OP **OpPtr\r | |
83 | )\r | |
84 | /*++\r | |
85 | Routine description:\r | |
86 | Locate option inside DHCP packet.\r | |
87 | \r | |
88 | Parameters:\r | |
89 | Packet := Pointer to DHCP packet structure.\r | |
90 | OpCode := Option op-code to find.\r | |
91 | Skip := Number of found op-codes to skip.\r | |
92 | OpPtr := Pointer to found op-code pointer.\r | |
93 | \r | |
94 | Returns:\r | |
95 | EFI_SUCCESS := Option was found\r | |
96 | EFI_INVALID_PARAMETER := Packet == NULL || OpPtr == NULL\r | |
97 | EFI_INVALID_PARAMETER := OpCode == DHCP4_PAD\r | |
98 | EFI_INVALID_PARAMETER := OpCode == DHCP4_END && Skip != 0\r | |
99 | EFI_INVALID_PARAMETER := DHCP magik number in Packet is not valid\r | |
100 | EFI_NOT_FOUND := op-code was not found in packet\r | |
101 | EFI_INVALID_PARAMETER := If present, DHCP_MAX_MESSAGE_SIZE option\r | |
102 | does not have a valid value.\r | |
103 | --*/\r | |
104 | {\r | |
105 | UINTN msg_size;\r | |
106 | UINTN buf_len;\r | |
107 | UINTN n;\r | |
108 | UINT8 *buf;\r | |
109 | UINT8 *end_ptr;\r | |
110 | UINT8 overload;\r | |
111 | \r | |
112 | //\r | |
113 | // Verify parameters.\r | |
114 | //\r | |
115 | if (Packet == NULL || OpPtr == NULL || OpCode == DHCP4_PAD || (OpCode == DHCP4_END && Skip != 0)) {\r | |
116 | return EFI_INVALID_PARAMETER;\r | |
117 | }\r | |
118 | \r | |
119 | if (Packet->dhcp4.magik != htonl (DHCP4_MAGIK_NUMBER)) {\r | |
120 | return EFI_INVALID_PARAMETER;\r | |
121 | }\r | |
122 | //\r | |
123 | // Initialize search variables.\r | |
124 | //\r | |
125 | *OpPtr = NULL;\r | |
126 | \r | |
127 | msg_size = DHCP4_MAX_PACKET_SIZE - (DHCP4_UDP_HEADER_SIZE + DHCP4_IP_HEADER_SIZE);\r | |
128 | \r | |
129 | overload = 0;\r | |
130 | end_ptr = NULL;\r | |
131 | \r | |
132 | buf = Packet->dhcp4.options;\r | |
133 | buf_len = msg_size - (Packet->dhcp4.options - Packet->raw);\r | |
134 | \r | |
135 | //\r | |
136 | // Start searching for requested option.\r | |
137 | //\r | |
138 | for (n = 0;;) {\r | |
139 | //\r | |
140 | // If match is found, decrement skip count and return\r | |
141 | // when desired match is found.\r | |
142 | //\r | |
143 | if (buf[n] == OpCode) {\r | |
144 | *OpPtr = (DHCP4_OP *) &buf[n];\r | |
145 | \r | |
146 | if (Skip-- == 0) {\r | |
147 | return EFI_SUCCESS;\r | |
148 | }\r | |
149 | }\r | |
150 | //\r | |
151 | // Skip past current option. Check for option overload\r | |
152 | // and message size options since these will affect the\r | |
153 | // amount of data to be searched.\r | |
154 | //\r | |
155 | switch (buf[n]) {\r | |
156 | case DHCP4_PAD:\r | |
157 | //\r | |
158 | // Remember the first pad byte of a group. This\r | |
159 | // could be the end of a badly formed packet.\r | |
160 | //\r | |
161 | if (end_ptr == NULL) {\r | |
162 | end_ptr = &buf[n];\r | |
163 | }\r | |
164 | \r | |
165 | ++n;\r | |
166 | break;\r | |
167 | \r | |
168 | case DHCP4_END:\r | |
169 | //\r | |
170 | // If we reach the end we are done.\r | |
171 | //\r | |
172 | end_ptr = NULL;\r | |
173 | return EFI_NOT_FOUND;\r | |
174 | \r | |
175 | case DHCP4_OPTION_OVERLOAD:\r | |
176 | //\r | |
177 | // Remember the option overload value since it\r | |
178 | // could cause the search to continue into\r | |
179 | // the fname and sname fields.\r | |
180 | //\r | |
181 | end_ptr = NULL;\r | |
182 | \r | |
183 | if (buf[n + 1] == 1) {\r | |
184 | overload = buf[n + 2];\r | |
185 | }\r | |
186 | \r | |
187 | n += 2 + buf[n + 1];\r | |
188 | break;\r | |
189 | \r | |
190 | case DHCP4_MAX_MESSAGE_SIZE:\r | |
191 | //\r | |
192 | // Remember the message size value since it could\r | |
193 | // change the amount of option buffer to search.\r | |
194 | //\r | |
195 | end_ptr = NULL;\r | |
196 | \r | |
197 | if (buf[n + 1] == 2 && buf == Packet->dhcp4.options) {\r | |
198 | msg_size = ((buf[n + 2] << 8) | buf[n + 3]) - (DHCP4_UDP_HEADER_SIZE + DHCP4_IP_HEADER_SIZE);\r | |
199 | \r | |
200 | if (msg_size < 328) {\r | |
201 | return EFI_INVALID_PARAMETER;\r | |
202 | }\r | |
203 | \r | |
204 | buf_len = msg_size - (Packet->dhcp4.options - Packet->raw);\r | |
205 | \r | |
206 | if (n + 2 + buf[n + 1] > buf_len) {\r | |
207 | return EFI_INVALID_PARAMETER;\r | |
208 | }\r | |
209 | }\r | |
210 | \r | |
211 | /* fall thru */\r | |
212 | default:\r | |
213 | end_ptr = NULL;\r | |
214 | \r | |
215 | n += 2 + buf[n + 1];\r | |
216 | }\r | |
217 | //\r | |
218 | // Keep searching until the end of the buffer is reached.\r | |
219 | //\r | |
220 | if (n < buf_len) {\r | |
221 | continue;\r | |
222 | }\r | |
223 | //\r | |
224 | // Reached end of current buffer. Check if we are supposed\r | |
225 | // to search the fname and sname buffers.\r | |
226 | //\r | |
227 | if (buf == Packet->dhcp4.options &&\r | |
228 | (overload == DHCP4_OVERLOAD_FNAME || overload == DHCP4_OVERLOAD_FNAME_AND_SNAME)\r | |
229 | ) {\r | |
230 | buf = Packet->dhcp4.fname;\r | |
231 | buf_len = 128;\r | |
232 | n = 0;\r | |
233 | continue;\r | |
234 | }\r | |
235 | \r | |
236 | if (buf != Packet->dhcp4.sname && (overload == DHCP4_OVERLOAD_SNAME || overload == DHCP4_OVERLOAD_FNAME_AND_SNAME)) {\r | |
237 | buf = Packet->dhcp4.sname;\r | |
238 | buf_len = 64;\r | |
239 | n = 0;\r | |
240 | continue;\r | |
241 | }\r | |
242 | //\r | |
243 | // End of last buffer reached. If this was a search\r | |
244 | // for the end of the options, go back to the start\r | |
245 | // of the current pad block.\r | |
246 | //\r | |
247 | if (OpCode == DHCP4_END && end_ptr != NULL) {\r | |
248 | *OpPtr = (DHCP4_OP *) end_ptr;\r | |
249 | return EFI_SUCCESS;\r | |
250 | }\r | |
251 | \r | |
252 | return EFI_NOT_FOUND;\r | |
253 | }\r | |
254 | }\r | |
255 | \r | |
256 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
257 | EFI_STATUS\r | |
258 | add_opt (\r | |
259 | IN DHCP4_PACKET *Packet,\r | |
260 | IN DHCP4_OP *OpPtr\r | |
261 | )\r | |
262 | /*++\r | |
263 | Routine description:\r | |
264 | Add option to DHCP packet.\r | |
265 | \r | |
266 | Parameters:\r | |
267 | Packet := Pointer to DHCP packet structure.\r | |
268 | OpPtr := Pointer to DHCP option.\r | |
269 | \r | |
270 | Returns:\r | |
271 | EFI_INVALID_PARAMETER := Packet == NULL || OpPtr == NULL\r | |
272 | EFI_INVALID_PARAMETER := OpPtr->op == DHCP4_PAD || OpPtr->op == DHCP4_END\r | |
273 | EFI_INVALID_PARAMETER := DHCP magik number in DHCP packet is not valid\r | |
274 | EFI_INVALID_PARAMETER := If DHCP_MAX_MESSAGE_SIZE option is present and\r | |
275 | is not valid\r | |
276 | EFI_INVALID_PARAMETER := If DHCP_OPTION_OVERLOAD option is present and\r | |
277 | is not valid\r | |
278 | EFI_DEVICE_ERROR := Cannot determine end of packet\r | |
279 | EFI_BUFFER_TOO_SMALL := Not enough room in packet to add option\r | |
280 | EFI_SUCCESS := Option added to DHCP packet\r | |
281 | --*/\r | |
282 | {\r | |
283 | EFI_STATUS efi_status;\r | |
284 | DHCP4_OP *msg_size_op;\r | |
285 | DHCP4_OP *overload_op;\r | |
286 | DHCP4_OP *op;\r | |
287 | UINTN msg_size;\r | |
288 | UINTN buf_len;\r | |
289 | UINT32 magik;\r | |
290 | UINT8 *buf;\r | |
291 | \r | |
292 | //\r | |
293 | // Verify parameters.\r | |
294 | //\r | |
295 | ASSERT (Packet);\r | |
296 | ASSERT (OpPtr);\r | |
297 | \r | |
298 | if (Packet == NULL || OpPtr == NULL) {\r | |
299 | return EFI_INVALID_PARAMETER;\r | |
300 | }\r | |
301 | \r | |
302 | switch (OpPtr->op) {\r | |
303 | case DHCP4_PAD:\r | |
304 | case DHCP4_END:\r | |
305 | //\r | |
306 | // No adding PAD or END.\r | |
307 | //\r | |
308 | return EFI_INVALID_PARAMETER;\r | |
309 | }\r | |
310 | //\r | |
311 | // Check the DHCP magik number.\r | |
312 | //\r | |
313 | CopyMem (&magik, &Packet->dhcp4.magik, 4);\r | |
314 | \r | |
315 | if (magik != htonl (DHCP4_MAGIK_NUMBER)) {\r | |
316 | return EFI_INVALID_PARAMETER;\r | |
317 | }\r | |
318 | //\r | |
319 | // Find the DHCP message size option.\r | |
320 | //\r | |
321 | msg_size = DHCP4_DEFAULT_MAX_MESSAGE_SIZE;\r | |
322 | \r | |
323 | efi_status = find_opt (\r | |
324 | Packet,\r | |
325 | DHCP4_MAX_MESSAGE_SIZE,\r | |
326 | 0,\r | |
327 | &msg_size_op\r | |
328 | );\r | |
329 | \r | |
330 | if (EFI_ERROR (efi_status)) {\r | |
331 | if (efi_status != EFI_NOT_FOUND) {\r | |
332 | DebugPrint (\r | |
333 | ("%s:%d:%r\n",\r | |
334 | __FILE__,\r | |
335 | __LINE__,\r | |
336 | efi_status)\r | |
337 | );\r | |
338 | return efi_status;\r | |
339 | }\r | |
340 | \r | |
341 | msg_size_op = NULL;\r | |
342 | } else {\r | |
343 | CopyMem (&msg_size, msg_size_op->data, 2);\r | |
344 | msg_size = htons (msg_size);\r | |
345 | \r | |
346 | if (msg_size < DHCP4_DEFAULT_MAX_MESSAGE_SIZE) {\r | |
347 | return EFI_INVALID_PARAMETER;\r | |
348 | }\r | |
349 | }\r | |
350 | //\r | |
351 | // Find the DHCP option overload option.\r | |
352 | //\r | |
353 | efi_status = find_opt (\r | |
354 | Packet,\r | |
355 | DHCP4_OPTION_OVERLOAD,\r | |
356 | 0,\r | |
357 | &overload_op\r | |
358 | );\r | |
359 | \r | |
360 | if (EFI_ERROR (efi_status)) {\r | |
361 | if (efi_status != EFI_NOT_FOUND) {\r | |
362 | DebugPrint (\r | |
363 | ("%s:%d:%r\n",\r | |
364 | __FILE__,\r | |
365 | __LINE__,\r | |
366 | efi_status)\r | |
367 | );\r | |
368 | return efi_status;\r | |
369 | }\r | |
370 | \r | |
371 | overload_op = NULL;\r | |
372 | } else {\r | |
373 | if (overload_op->len != 1) {\r | |
374 | return EFI_INVALID_PARAMETER;\r | |
375 | }\r | |
376 | \r | |
377 | switch (overload_op->data[0]) {\r | |
378 | case 1:\r | |
379 | case 2:\r | |
380 | case 3:\r | |
381 | break;\r | |
382 | \r | |
383 | default:\r | |
384 | return EFI_INVALID_PARAMETER;\r | |
385 | }\r | |
386 | }\r | |
387 | //\r | |
388 | // Find the end of the packet.\r | |
389 | //\r | |
390 | efi_status = find_opt (Packet, DHCP4_END, 0, &op);\r | |
391 | \r | |
392 | if (EFI_ERROR (efi_status)) {\r | |
393 | return EFI_INVALID_PARAMETER;\r | |
394 | }\r | |
395 | //\r | |
396 | // Find which buffer the end is in.\r | |
397 | //\r | |
398 | if ((UINTN) op >= (UINTN) (buf = Packet->dhcp4.options)) {\r | |
399 | buf_len = (msg_size - ((UINT8 *) &Packet->dhcp4.options - (UINT8 *) &Packet->raw)) - (DHCP4_UDP_HEADER_SIZE + DHCP4_IP_HEADER_SIZE);\r | |
400 | } else if ((UINTN) op >= (UINTN) (buf = Packet->dhcp4.fname)) {\r | |
401 | buf_len = 128;\r | |
402 | } else if ((UINTN) op >= (UINTN) (buf = Packet->dhcp4.sname)) {\r | |
403 | buf_len = 64;\r | |
404 | } else {\r | |
405 | return EFI_DEVICE_ERROR;\r | |
406 | }\r | |
407 | //\r | |
408 | // Add option to current buffer if there is no overlow.\r | |
409 | //\r | |
410 | if ((UINTN) ((&op->op - buf) + 3 + op->len) < buf_len) {\r | |
411 | CopyMem (op, OpPtr, OpPtr->len + 2);\r | |
412 | \r | |
413 | op->data[op->len] = DHCP4_END;\r | |
414 | \r | |
415 | return EFI_SUCCESS;\r | |
416 | }\r | |
417 | //\r | |
418 | // Error if there is no space for option.\r | |
419 | //\r | |
420 | return EFI_BUFFER_TOO_SMALL;\r | |
421 | }\r | |
422 | \r | |
423 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
424 | EFI_STATUS\r | |
425 | start_udp (\r | |
426 | IN PXE_DHCP4_PRIVATE_DATA *Private,\r | |
427 | IN OPTIONAL EFI_IP_ADDRESS *StationIp,\r | |
428 | IN OPTIONAL EFI_IP_ADDRESS *SubnetMask\r | |
429 | )\r | |
430 | /*++\r | |
431 | Routine description:\r | |
432 | Setup PXE BaseCode UDP stack.\r | |
433 | \r | |
434 | Parameters:\r | |
435 | Private := Pointer to PxeDhcp4 private data.\r | |
436 | StationIp := Pointer to IP address or NULL if not known.\r | |
437 | SubnetMask := Pointer to subnet mask or NULL if not known.\r | |
438 | \r | |
439 | Returns:\r | |
440 | EFI_INVALID_PARAMETER := Private == NULL || Private->PxeBc == NULL\r | |
441 | EFI_INVALID_PARAMETER := Only one of StationIp and SubnetMask is given\r | |
442 | EFI_SUCCESS := UDP stack is ready\r | |
443 | other := Error from PxeBc->SetIpFilter() or PxeBc->SetStationIp()\r | |
444 | --*/\r | |
445 | {\r | |
446 | EFI_PXE_BASE_CODE_IP_FILTER bcast_filter;\r | |
447 | EFI_STATUS efi_status;\r | |
448 | \r | |
449 | //\r | |
450 | //\r | |
451 | //\r | |
452 | ASSERT (Private);\r | |
453 | ASSERT (Private->PxeBc);\r | |
454 | \r | |
455 | if (Private == NULL) {\r | |
456 | return EFI_INVALID_PARAMETER;\r | |
457 | }\r | |
458 | \r | |
459 | if (Private->PxeBc == NULL) {\r | |
460 | return EFI_INVALID_PARAMETER;\r | |
461 | }\r | |
462 | \r | |
463 | if (StationIp != NULL && SubnetMask == NULL) {\r | |
464 | return EFI_INVALID_PARAMETER;\r | |
465 | }\r | |
466 | \r | |
467 | if (StationIp == NULL && SubnetMask != NULL) {\r | |
468 | return EFI_INVALID_PARAMETER;\r | |
469 | }\r | |
470 | //\r | |
471 | // Setup broadcast receive filter...\r | |
472 | //\r | |
473 | ZeroMem (&bcast_filter, sizeof (EFI_PXE_BASE_CODE_IP_FILTER));\r | |
474 | \r | |
475 | bcast_filter.Filters = EFI_PXE_BASE_CODE_IP_FILTER_BROADCAST;\r | |
476 | bcast_filter.IpCnt = 0;\r | |
477 | \r | |
478 | efi_status = Private->PxeBc->SetIpFilter (\r | |
479 | Private->PxeBc,\r | |
480 | &bcast_filter\r | |
481 | );\r | |
482 | \r | |
483 | if (EFI_ERROR (efi_status)) {\r | |
484 | DebugPrint (("%s:%d:%r\n", __FILE__, __LINE__, efi_status));\r | |
485 | return efi_status;\r | |
486 | }\r | |
487 | //\r | |
488 | // Configure station IP address and subnet mask...\r | |
489 | //\r | |
490 | efi_status = Private->PxeBc->SetStationIp (\r | |
491 | Private->PxeBc,\r | |
492 | StationIp,\r | |
493 | SubnetMask\r | |
494 | );\r | |
495 | \r | |
496 | if (EFI_ERROR (efi_status)) {\r | |
497 | DebugPrint (("%s:%d:%r\n", __FILE__, __LINE__, efi_status));\r | |
498 | }\r | |
499 | \r | |
500 | return efi_status;\r | |
501 | }\r | |
502 | \r | |
503 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
504 | VOID\r | |
505 | stop_udp (\r | |
506 | IN PXE_DHCP4_PRIVATE_DATA *Private\r | |
507 | )\r | |
508 | {\r | |
509 | //\r | |
510 | //\r | |
511 | //\r | |
512 | ASSERT (Private);\r | |
513 | ASSERT (Private->PxeBc);\r | |
514 | }\r | |
515 | \r | |
516 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
517 | EFI_STATUS\r | |
518 | start_receive_events (\r | |
519 | IN PXE_DHCP4_PRIVATE_DATA *Private,\r | |
520 | IN UINTN SecondsTimeout\r | |
521 | )\r | |
522 | /*++\r | |
523 | Routine description:\r | |
524 | Create periodic and timeout receive events.\r | |
525 | \r | |
526 | Parameters:\r | |
527 | Private := Pointer to PxeDhcp4 private data.\r | |
528 | SecondsTimeout := Number of seconds to wait before timeout.\r | |
529 | \r | |
530 | Returns:\r | |
531 | --*/\r | |
532 | {\r | |
533 | EFI_STATUS efi_status;\r | |
534 | UINTN random;\r | |
535 | \r | |
536 | //\r | |
537 | //\r | |
538 | //\r | |
539 | ASSERT (Private);\r | |
540 | ASSERT (SecondsTimeout);\r | |
541 | \r | |
542 | if (Private == NULL || SecondsTimeout == 0) {\r | |
543 | return EFI_INVALID_PARAMETER;\r | |
544 | }\r | |
545 | //\r | |
546 | // Need a bettern randomizer...\r | |
547 | // For now adjust the timeout value by the least significant\r | |
548 | // digit in the MAC address.\r | |
549 | //\r | |
550 | random = 0;\r | |
551 | \r | |
552 | if (Private->PxeDhcp4.Data != NULL) {\r | |
553 | if (Private->PxeDhcp4.Data->Discover.dhcp4.hlen != 0 && Private->PxeDhcp4.Data->Discover.dhcp4.hlen <= 16) {\r | |
554 | random = 0xFFF & Private->PxeDhcp4.Data->Discover.dhcp4.chaddr[Private->PxeDhcp4.Data->Discover.dhcp4.hlen - 1];\r | |
555 | }\r | |
556 | }\r | |
557 | //\r | |
558 | // Setup timeout event and start timer.\r | |
559 | //\r | |
560 | efi_status = gBS->CreateEvent (\r | |
93b0fbc8 | 561 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r |
562 | TPL_NOTIFY,\r | |
878ddf1f | 563 | &timeout_notify,\r |
564 | Private,\r | |
565 | &Private->TimeoutEvent\r | |
566 | );\r | |
567 | \r | |
568 | if (EFI_ERROR (efi_status)) {\r | |
569 | DebugPrint (("%s:%d:%r\n", __FILE__, __LINE__, efi_status));\r | |
570 | return efi_status;\r | |
571 | }\r | |
572 | \r | |
573 | efi_status = gBS->SetTimer (\r | |
574 | Private->TimeoutEvent,\r | |
575 | TimerRelative,\r | |
576 | SecondsTimeout * 10000000 + random\r | |
577 | );\r | |
578 | \r | |
579 | if (EFI_ERROR (efi_status)) {\r | |
580 | DebugPrint (("%s:%d:%r\n", __FILE__, __LINE__, efi_status));\r | |
581 | gBS->CloseEvent (Private->TimeoutEvent);\r | |
582 | return efi_status;\r | |
583 | }\r | |
584 | \r | |
585 | Private->TimeoutOccurred = FALSE;\r | |
586 | \r | |
587 | //\r | |
588 | // Setup periodic event for callbacks\r | |
589 | //\r | |
590 | efi_status = gBS->CreateEvent (\r | |
93b0fbc8 | 591 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r |
592 | TPL_NOTIFY,\r | |
878ddf1f | 593 | &periodic_notify,\r |
594 | Private,\r | |
595 | &Private->PeriodicEvent\r | |
596 | );\r | |
597 | \r | |
598 | if (EFI_ERROR (efi_status)) {\r | |
599 | DebugPrint (("%s:%d:%r\n", __FILE__, __LINE__, efi_status));\r | |
600 | gBS->CloseEvent (Private->TimeoutEvent);\r | |
601 | return efi_status;\r | |
602 | }\r | |
603 | \r | |
604 | efi_status = gBS->SetTimer (\r | |
605 | Private->PeriodicEvent,\r | |
606 | TimerPeriodic,\r | |
607 | 1000000\r | |
608 | ); /* 1/10th second */\r | |
609 | \r | |
610 | if (EFI_ERROR (efi_status)) {\r | |
611 | DebugPrint (("%s:%d:%r\n", __FILE__, __LINE__, efi_status));\r | |
612 | gBS->CloseEvent (Private->TimeoutEvent);\r | |
613 | gBS->CloseEvent (Private->PeriodicEvent);\r | |
614 | return efi_status;\r | |
615 | }\r | |
616 | \r | |
617 | Private->PeriodicOccurred = FALSE;\r | |
618 | \r | |
619 | return EFI_SUCCESS;\r | |
620 | }\r | |
621 | \r | |
622 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
623 | VOID\r | |
624 | stop_receive_events (\r | |
625 | IN PXE_DHCP4_PRIVATE_DATA *Private\r | |
626 | )\r | |
627 | {\r | |
628 | //\r | |
629 | //\r | |
630 | //\r | |
631 | ASSERT (Private);\r | |
632 | \r | |
633 | if (Private == NULL) {\r | |
634 | return ;\r | |
635 | }\r | |
636 | //\r | |
637 | //\r | |
638 | //\r | |
639 | gBS->CloseEvent (Private->TimeoutEvent);\r | |
640 | Private->TimeoutOccurred = FALSE;\r | |
641 | \r | |
642 | //\r | |
643 | //\r | |
644 | //\r | |
645 | gBS->CloseEvent (Private->PeriodicEvent);\r | |
646 | Private->PeriodicOccurred = FALSE;\r | |
647 | }\r | |
648 | \r | |
649 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
650 | EFI_STATUS\r | |
651 | tx_udp (\r | |
652 | IN PXE_DHCP4_PRIVATE_DATA *Private,\r | |
653 | IN EFI_IP_ADDRESS *dest_ip,\r | |
654 | IN OPTIONAL EFI_IP_ADDRESS *gateway_ip,\r | |
655 | IN EFI_IP_ADDRESS *src_ip,\r | |
656 | IN VOID *buffer,\r | |
657 | IN UINTN BufferSize\r | |
658 | )\r | |
659 | /*++\r | |
660 | Routine description:\r | |
661 | Transmit DHCP packet.\r | |
662 | \r | |
663 | Parameters:\r | |
664 | Private := Pointer to PxeDhcp4 private data\r | |
665 | dest_ip := Pointer to destination IP address\r | |
666 | gateway_ip := Pointer to gateway IP address or NULL\r | |
667 | src_ip := Pointer to source IP address or NULL\r | |
668 | buffer := Pointer to buffer to transmit\r | |
669 | BufferSize := Size of buffer in bytes\r | |
670 | \r | |
671 | Returns:\r | |
672 | EFI_INVALID_PARAMETER := Private == NULL || dest_ip == NULL ||\r | |
673 | buffer == NULL || BufferSize < 300 || Private->PxeBc == NULL\r | |
674 | EFI_SUCCESS := Buffer was transmitted\r | |
675 | other := Return from PxeBc->UdpWrite()\r | |
676 | --*/\r | |
677 | {\r | |
678 | EFI_PXE_BASE_CODE_UDP_PORT dest_port;\r | |
679 | EFI_PXE_BASE_CODE_UDP_PORT src_port;\r | |
680 | EFI_IP_ADDRESS zero_ip;\r | |
681 | \r | |
682 | //\r | |
683 | //\r | |
684 | //\r | |
685 | ASSERT (Private);\r | |
686 | ASSERT (dest_ip);\r | |
687 | ASSERT (buffer);\r | |
688 | ASSERT (BufferSize >= 300);\r | |
689 | \r | |
690 | if (Private == NULL || dest_ip == NULL || buffer == NULL || BufferSize < 300) {\r | |
691 | return EFI_INVALID_PARAMETER;\r | |
692 | }\r | |
693 | \r | |
694 | ASSERT (Private->PxeBc);\r | |
695 | \r | |
696 | if (Private->PxeBc == NULL) {\r | |
697 | return EFI_INVALID_PARAMETER;\r | |
698 | }\r | |
699 | //\r | |
700 | // Transmit DHCP discover packet...\r | |
701 | //\r | |
702 | ZeroMem (&zero_ip, sizeof (EFI_IP_ADDRESS));\r | |
703 | \r | |
704 | if (src_ip == NULL) {\r | |
705 | src_ip = &zero_ip;\r | |
706 | }\r | |
707 | \r | |
708 | dest_port = DHCP4_SERVER_PORT;\r | |
709 | src_port = DHCP4_CLIENT_PORT;\r | |
710 | \r | |
711 | return Private->PxeBc->UdpWrite (\r | |
712 | Private->PxeBc,\r | |
713 | EFI_PXE_BASE_CODE_UDP_OPFLAGS_MAY_FRAGMENT,\r | |
714 | dest_ip,\r | |
715 | &dest_port,\r | |
716 | gateway_ip,\r | |
717 | src_ip,\r | |
718 | &src_port,\r | |
719 | NULL,\r | |
720 | NULL,\r | |
721 | &BufferSize,\r | |
722 | buffer\r | |
723 | );\r | |
724 | }\r | |
725 | \r | |
726 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
727 | EFI_STATUS\r | |
728 | rx_udp (\r | |
729 | IN PXE_DHCP4_PRIVATE_DATA *Private,\r | |
730 | OUT VOID *buffer,\r | |
731 | IN OUT UINTN *BufferSize,\r | |
732 | IN OUT EFI_IP_ADDRESS *dest_ip,\r | |
733 | IN OUT EFI_IP_ADDRESS *src_ip,\r | |
734 | IN UINT16 op_flags\r | |
735 | )\r | |
736 | /*++\r | |
737 | Routine description:\r | |
738 | Receive DHCP packet.\r | |
739 | \r | |
740 | Parameters:\r | |
741 | Private := Pointer to PxeDhcp4 private data\r | |
742 | buffer := Pointer to buffer to receive DHCP packet\r | |
743 | BufferSize := Pointer to buffer size in bytes\r | |
744 | dest_ip := Pointer to destination IP address\r | |
745 | src_ip := Pointer to source IP address\r | |
746 | op_flags := UDP receive operation flags\r | |
747 | \r | |
748 | Returns:\r | |
e5f461a8 | 749 | EFI_INVALID_PARAMETER :=\r |
878ddf1f | 750 | EFI_SUCCESS := Packet received\r |
751 | other := Return from PxeBc->UdpRead()\r | |
752 | --*/\r | |
753 | {\r | |
754 | EFI_PXE_BASE_CODE_UDP_PORT dest_port;\r | |
755 | EFI_PXE_BASE_CODE_UDP_PORT src_port;\r | |
756 | \r | |
757 | //\r | |
758 | //\r | |
759 | //\r | |
760 | ASSERT (Private);\r | |
761 | ASSERT (buffer);\r | |
762 | ASSERT (dest_ip);\r | |
763 | ASSERT (src_ip);\r | |
764 | \r | |
765 | if (Private == NULL || buffer == NULL || dest_ip == NULL || src_ip == NULL || BufferSize == NULL) {\r | |
766 | return EFI_INVALID_PARAMETER;\r | |
767 | }\r | |
768 | \r | |
769 | ASSERT (Private->PxeBc);\r | |
770 | \r | |
771 | if (Private->PxeBc == NULL) {\r | |
772 | return EFI_INVALID_PARAMETER;\r | |
773 | }\r | |
774 | //\r | |
775 | // Check for packet\r | |
776 | //\r | |
777 | *BufferSize = sizeof (DHCP4_PACKET);\r | |
778 | \r | |
779 | dest_port = DHCP4_CLIENT_PORT;\r | |
780 | src_port = DHCP4_SERVER_PORT;\r | |
781 | \r | |
782 | return Private->PxeBc->UdpRead (\r | |
783 | Private->PxeBc,\r | |
784 | op_flags,\r | |
785 | dest_ip,\r | |
786 | &dest_port,\r | |
787 | src_ip,\r | |
788 | &src_port,\r | |
789 | NULL,\r | |
790 | NULL,\r | |
791 | BufferSize,\r | |
792 | buffer\r | |
793 | );\r | |
794 | }\r | |
795 | \r | |
796 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
797 | EFI_STATUS\r | |
798 | tx_rx_udp (\r | |
799 | IN PXE_DHCP4_PRIVATE_DATA *Private,\r | |
800 | IN OUT EFI_IP_ADDRESS *ServerIp,\r | |
801 | IN OPTIONAL EFI_IP_ADDRESS *gateway_ip,\r | |
802 | IN OPTIONAL EFI_IP_ADDRESS *client_ip,\r | |
803 | IN OPTIONAL EFI_IP_ADDRESS *SubnetMask,\r | |
804 | IN DHCP4_PACKET *tx_pkt,\r | |
805 | OUT DHCP4_PACKET *rx_pkt,\r | |
806 | IN INTN (*rx_vfy)(\r | |
807 | IN PXE_DHCP4_PRIVATE_DATA *Private,\r | |
808 | IN DHCP4_PACKET *tx_pkt,\r | |
809 | IN DHCP4_PACKET *rx_pkt,\r | |
810 | IN UINTN rx_pkt_size\r | |
811 | ),\r | |
812 | IN UINTN SecondsTimeout\r | |
813 | )\r | |
814 | /*++\r | |
815 | Routine description:\r | |
816 | Transmit DHCP packet and wait for replies.\r | |
817 | \r | |
818 | Parameters:\r | |
819 | Private := Pointer to PxeDhcp4 private data\r | |
820 | ServerIp := Pointer to server IP address\r | |
821 | gateway_ip := Pointer to gateway IP address or NULL\r | |
822 | client_ip := Pointer to client IP address or NULL\r | |
823 | SubnetMask := Pointer to subnet mask or NULL\r | |
824 | tx_pkt := Pointer to DHCP packet to transmit\r | |
825 | rx_pkt := Pointer to DHCP packet receive buffer\r | |
826 | rx_vfy := Pointer to DHCP packet receive verification routine\r | |
827 | SecondsTimeout := Number of seconds until timeout\r | |
828 | \r | |
829 | Returns:\r | |
e5f461a8 | 830 | EFI_INVALID_PARAMETER := Private == NULL || ServerIp == NULL ||\r |
878ddf1f | 831 | tx_pkt == NULL || rx_pkt == NULL || rx_vfy == NULL || Private->PxeBc == NULL\r |
832 | EFI_ABORTED := Receive aborted\r | |
833 | EFI_TIMEOUT := No packets received\r | |
834 | EFI_SUCCESS := Packet(s) received\r | |
835 | other := Returns from other PxeDhcp4 support routines\r | |
836 | --*/\r | |
837 | {\r | |
838 | EFI_PXE_DHCP4_CALLBACK_STATUS CallbackStatus;\r | |
839 | EFI_IP_ADDRESS dest_ip;\r | |
840 | EFI_IP_ADDRESS src_ip;\r | |
841 | EFI_STATUS efi_status;\r | |
842 | DHCP4_OP *msg_size_op;\r | |
843 | UINTN pkt_size;\r | |
844 | UINTN n;\r | |
845 | UINT16 msg_size;\r | |
846 | UINT16 op_flags;\r | |
847 | BOOLEAN done_flag;\r | |
848 | BOOLEAN got_packet;\r | |
849 | \r | |
850 | //\r | |
851 | // Bad programmer check...\r | |
852 | //\r | |
853 | ASSERT (Private);\r | |
854 | ASSERT (ServerIp);\r | |
855 | ASSERT (tx_pkt);\r | |
856 | ASSERT (rx_pkt);\r | |
857 | ASSERT (rx_vfy);\r | |
858 | \r | |
859 | if (Private == NULL || ServerIp == NULL || tx_pkt == NULL || rx_pkt == NULL || rx_vfy == NULL) {\r | |
860 | return EFI_INVALID_PARAMETER;\r | |
861 | }\r | |
862 | \r | |
863 | ASSERT (Private->PxeBc);\r | |
864 | \r | |
865 | if (Private->PxeBc == NULL) {\r | |
866 | return EFI_INVALID_PARAMETER;\r | |
867 | }\r | |
868 | //\r | |
869 | // Enable UDP...\r | |
870 | //\r | |
871 | efi_status = start_udp (Private, client_ip, SubnetMask);\r | |
872 | \r | |
873 | if (EFI_ERROR (efi_status)) {\r | |
874 | DebugPrint (("%s:%d:%r\n", __FILE__, __LINE__, efi_status));\r | |
875 | return efi_status;\r | |
876 | }\r | |
877 | //\r | |
878 | // Get length of transmit packet...\r | |
879 | //\r | |
880 | msg_size = DHCP4_DEFAULT_MAX_MESSAGE_SIZE;\r | |
881 | \r | |
882 | efi_status = find_opt (\r | |
883 | tx_pkt,\r | |
884 | DHCP4_MAX_MESSAGE_SIZE,\r | |
885 | 0,\r | |
886 | &msg_size_op\r | |
887 | );\r | |
888 | \r | |
889 | if (!EFI_ERROR (efi_status)) {\r | |
890 | CopyMem (&msg_size, msg_size_op->data, 2);\r | |
891 | \r | |
892 | if ((msg_size = htons (msg_size)) < 328) {\r | |
893 | msg_size = 328;\r | |
894 | }\r | |
895 | }\r | |
896 | //\r | |
897 | // Transmit packet...\r | |
898 | //\r | |
899 | efi_status = tx_udp (\r | |
900 | Private,\r | |
901 | ServerIp,\r | |
902 | gateway_ip,\r | |
903 | client_ip,\r | |
904 | tx_pkt,\r | |
905 | msg_size - (DHCP4_UDP_HEADER_SIZE + DHCP4_IP_HEADER_SIZE)\r | |
906 | );\r | |
907 | \r | |
908 | if (EFI_ERROR (efi_status)) {\r | |
909 | DebugPrint (("%s:%d:%r\n", __FILE__, __LINE__, efi_status));\r | |
910 | stop_udp (Private);\r | |
911 | return efi_status;\r | |
912 | }\r | |
913 | //\r | |
914 | // Enable periodic and timeout events...\r | |
915 | //\r | |
916 | efi_status = start_receive_events (Private, SecondsTimeout);\r | |
917 | \r | |
918 | if (EFI_ERROR (efi_status)) {\r | |
919 | DebugPrint (("%s:%d:%r\n", __FILE__, __LINE__, efi_status));\r | |
920 | stop_udp (Private);\r | |
921 | return efi_status;\r | |
922 | }\r | |
923 | //\r | |
924 | // Wait for packet(s)...\r | |
925 | //\r | |
878ddf1f | 926 | \r |
927 | done_flag = FALSE;\r | |
928 | got_packet = FALSE;\r | |
929 | \r | |
930 | while (!done_flag) {\r | |
931 | //\r | |
932 | // Check for timeout event...\r | |
933 | //\r | |
934 | if (Private->TimeoutOccurred) {\r | |
935 | efi_status = EFI_SUCCESS;\r | |
936 | break;\r | |
937 | }\r | |
938 | //\r | |
939 | // Check for periodic event...\r | |
940 | //\r | |
941 | if (Private->PeriodicOccurred && Private->callback != NULL) {\r | |
942 | CallbackStatus = EFI_PXE_DHCP4_CALLBACK_STATUS_CONTINUE;\r | |
943 | \r | |
944 | if (Private->callback->Callback != NULL) {\r | |
945 | CallbackStatus = (Private->callback->Callback) (&Private->PxeDhcp4, Private->function, 0, NULL);\r | |
946 | }\r | |
947 | \r | |
948 | switch (CallbackStatus) {\r | |
949 | case EFI_PXE_DHCP4_CALLBACK_STATUS_CONTINUE:\r | |
950 | break;\r | |
951 | \r | |
952 | case EFI_PXE_DHCP4_CALLBACK_STATUS_ABORT:\r | |
953 | default:\r | |
954 | stop_receive_events (Private);\r | |
955 | stop_udp (Private);\r | |
956 | return EFI_ABORTED;\r | |
957 | }\r | |
958 | \r | |
959 | Private->PeriodicOccurred = FALSE;\r | |
960 | }\r | |
961 | //\r | |
962 | // Check for packet...\r | |
963 | //\r | |
964 | if (client_ip == NULL) {\r | |
965 | SetMem (&dest_ip, sizeof (EFI_IP_ADDRESS), 0xFF);\r | |
966 | } else {\r | |
967 | CopyMem (&dest_ip, client_ip, sizeof (EFI_IP_ADDRESS));\r | |
968 | }\r | |
969 | \r | |
970 | SetMem (&src_ip, sizeof (EFI_IP_ADDRESS), 0xFF);\r | |
971 | \r | |
972 | if (CompareMem (&src_ip, &ServerIp, sizeof (EFI_IP_ADDRESS))) {\r | |
973 | ZeroMem (&src_ip, sizeof (EFI_IP_ADDRESS));\r | |
974 | op_flags = EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_IP;\r | |
975 | } else {\r | |
976 | op_flags = 0;\r | |
977 | }\r | |
978 | \r | |
979 | efi_status = rx_udp (\r | |
980 | Private,\r | |
981 | rx_pkt,\r | |
982 | &pkt_size,\r | |
983 | &dest_ip,\r | |
984 | &src_ip,\r | |
985 | op_flags\r | |
986 | );\r | |
987 | \r | |
988 | if (efi_status == EFI_TIMEOUT) {\r | |
989 | efi_status = EFI_SUCCESS;\r | |
990 | continue;\r | |
991 | }\r | |
992 | \r | |
993 | if (EFI_ERROR (efi_status)) {\r | |
994 | break;\r | |
995 | }\r | |
996 | //\r | |
997 | // Some basic packet sanity checks..\r | |
998 | //\r | |
999 | if (pkt_size < 300) {\r | |
1000 | continue;\r | |
1001 | }\r | |
1002 | \r | |
1003 | if (rx_pkt->dhcp4.op != BOOTP_REPLY) {\r | |
1004 | continue;\r | |
1005 | }\r | |
1006 | \r | |
1007 | if (tx_pkt->dhcp4.htype != rx_pkt->dhcp4.htype) {\r | |
1008 | continue;\r | |
1009 | }\r | |
1010 | \r | |
1011 | if ((n = tx_pkt->dhcp4.hlen) != rx_pkt->dhcp4.hlen) {\r | |
1012 | continue;\r | |
1013 | }\r | |
1014 | \r | |
1015 | if (CompareMem (&tx_pkt->dhcp4.xid, &rx_pkt->dhcp4.xid, 4)) {\r | |
1016 | continue;\r | |
1017 | }\r | |
1018 | \r | |
1019 | if (n != 0) {\r | |
1020 | if (n >= 16) {\r | |
1021 | n = 16;\r | |
1022 | }\r | |
1023 | \r | |
1024 | if (CompareMem (tx_pkt->dhcp4.chaddr, rx_pkt->dhcp4.chaddr, n)) {\r | |
1025 | continue;\r | |
1026 | }\r | |
1027 | }\r | |
1028 | //\r | |
1029 | // Internal callback packet verification...\r | |
1030 | //\r | |
1031 | switch ((*rx_vfy) (Private, tx_pkt, rx_pkt, pkt_size)) {\r | |
1032 | case -2: /* ignore and stop */\r | |
1033 | stop_receive_events (Private);\r | |
1034 | stop_udp (Private);\r | |
1035 | return EFI_ABORTED;\r | |
1036 | \r | |
1037 | case -1: /* ignore and wait */\r | |
1038 | continue;\r | |
1039 | \r | |
1040 | case 0: /* accept and wait */\r | |
1041 | break;\r | |
1042 | \r | |
1043 | case 1: /* accept and stop */\r | |
1044 | done_flag = TRUE;\r | |
1045 | break;\r | |
1046 | \r | |
1047 | default:\r | |
1048 | ASSERT (0);\r | |
1049 | }\r | |
1050 | //\r | |
1051 | // External callback packet verification...\r | |
1052 | //\r | |
1053 | CallbackStatus = EFI_PXE_DHCP4_CALLBACK_STATUS_KEEP_CONTINUE;\r | |
1054 | \r | |
1055 | if (Private->callback != NULL) {\r | |
1056 | if (Private->callback->Callback != NULL) {\r | |
1057 | CallbackStatus = (Private->callback->Callback) (&Private->PxeDhcp4, Private->function, (UINT32) pkt_size, rx_pkt);\r | |
1058 | }\r | |
1059 | }\r | |
1060 | \r | |
1061 | switch (CallbackStatus) {\r | |
1062 | case EFI_PXE_DHCP4_CALLBACK_STATUS_IGNORE_CONTINUE:\r | |
1063 | continue;\r | |
1064 | \r | |
1065 | case EFI_PXE_DHCP4_CALLBACK_STATUS_KEEP_ABORT:\r | |
1066 | done_flag = TRUE;\r | |
1067 | break;\r | |
1068 | \r | |
1069 | case EFI_PXE_DHCP4_CALLBACK_STATUS_IGNORE_ABORT:\r | |
1070 | stop_receive_events (Private);\r | |
1071 | stop_udp (Private);\r | |
1072 | return EFI_ABORTED;\r | |
1073 | \r | |
1074 | case EFI_PXE_DHCP4_CALLBACK_STATUS_KEEP_CONTINUE:\r | |
1075 | default:\r | |
1076 | break;\r | |
1077 | }\r | |
1078 | //\r | |
1079 | // We did! We did get a packet!\r | |
1080 | //\r | |
1081 | got_packet = TRUE;\r | |
1082 | }\r | |
1083 | //\r | |
1084 | //\r | |
1085 | //\r | |
1086 | stop_receive_events (Private);\r | |
1087 | stop_udp (Private);\r | |
1088 | \r | |
1089 | if (EFI_ERROR (efi_status)) {\r | |
1090 | DebugPrint (("%s:%d:%r\n", __FILE__, __LINE__, efi_status));\r | |
1091 | return efi_status;\r | |
1092 | }\r | |
1093 | \r | |
1094 | if (got_packet) {\r | |
1095 | return EFI_SUCCESS;\r | |
1096 | } else {\r | |
1097 | return EFI_TIMEOUT;\r | |
1098 | }\r | |
1099 | }\r | |
1100 | \r | |
1101 | /* eof - support.c */\r |