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878ddf1f | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2006, 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 | |
11 | \r | |
12 | Module Name:\r | |
13 | pxe_bc_udp.c\r | |
14 | \r | |
15 | Abstract:\r | |
16 | \r | |
17 | --*/\r | |
18 | \r | |
19 | \r | |
4cbd855e | 20 | #include "Bc.h"\r |
878ddf1f | 21 | \r |
22 | //\r | |
23 | // //////////////////////////////////////////////////////////////////////\r | |
24 | //\r | |
25 | // Udp Write Routine - called by base code - e.g. TFTP - already locked\r | |
26 | //\r | |
27 | EFI_STATUS\r | |
28 | UdpWrite (\r | |
29 | IN PXE_BASECODE_DEVICE *Private,\r | |
30 | IN UINT16 OpFlags,\r | |
31 | IN EFI_IP_ADDRESS *DestIpPtr,\r | |
32 | IN EFI_PXE_BASE_CODE_UDP_PORT *DestPortPtr,\r | |
33 | IN EFI_IP_ADDRESS *GatewayIpPtr, OPTIONAL\r | |
34 | IN EFI_IP_ADDRESS *SrcIpPtr, OPTIONAL\r | |
35 | IN OUT EFI_PXE_BASE_CODE_UDP_PORT *SrcPortPtr, OPTIONAL\r | |
36 | IN UINTN *HeaderSizePtr, OPTIONAL\r | |
37 | IN VOID *HeaderPtr, OPTIONAL\r | |
38 | IN UINTN *BufferSizeptr,\r | |
39 | IN VOID *BufferPtr\r | |
40 | )\r | |
41 | /*++\r | |
42 | Routine description:\r | |
43 | UDP write packet.\r | |
44 | \r | |
45 | Parameters:\r | |
46 | Private := Pointer to PxeBc interface\r | |
47 | OpFlags := \r | |
48 | DestIpPtr := \r | |
49 | DestPortPtr := \r | |
50 | GatewayIpPtr := \r | |
51 | SrcIpPtr := \r | |
52 | SrcPortPtr := \r | |
53 | HeaderSizePtr := \r | |
54 | HeaderPtr := \r | |
55 | BufferSizeptr := \r | |
56 | BufferPtr := \r | |
57 | \r | |
58 | Returns:\r | |
59 | EFI_SUCCESS := \r | |
60 | EFI_INVALID_PARAMETER := \r | |
61 | other := \r | |
62 | --*/\r | |
63 | {\r | |
64 | UINTN TotalLength;\r | |
65 | UINTN HeaderSize;\r | |
66 | EFI_PXE_BASE_CODE_UDP_PORT DefaultSrcPort;\r | |
67 | \r | |
68 | //\r | |
69 | //\r | |
70 | //\r | |
71 | HeaderSize = (HeaderSizePtr != NULL) ? *HeaderSizePtr : 0;\r | |
72 | DefaultSrcPort = 0;\r | |
73 | \r | |
74 | //\r | |
75 | // check parameters\r | |
76 | //\r | |
77 | if (BufferSizeptr == NULL ||\r | |
78 | BufferPtr == NULL ||\r | |
79 | DestIpPtr == NULL ||\r | |
80 | DestPortPtr == NULL ||\r | |
81 | (HeaderSizePtr != NULL && *HeaderSizePtr == 0) ||\r | |
82 | (HeaderSize != 0 && HeaderPtr == NULL) ||\r | |
83 | (GatewayIpPtr != NULL && !IS_INADDR_UNICAST(GatewayIpPtr)) ||\r | |
84 | (OpFlags &~(EFI_PXE_BASE_CODE_UDP_OPFLAGS_MAY_FRAGMENT | EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT))\r | |
85 | ) {\r | |
86 | DEBUG (\r | |
87 | (EFI_D_WARN,\r | |
88 | "\nUdpWrite() Exit #1 %xh (%r)",\r | |
89 | EFI_INVALID_PARAMETER,\r | |
90 | EFI_INVALID_PARAMETER)\r | |
91 | );\r | |
92 | \r | |
93 | return EFI_INVALID_PARAMETER;\r | |
94 | }\r | |
95 | \r | |
96 | TotalLength = *BufferSizeptr + HeaderSize + sizeof (UDPV4_HEADER);\r | |
97 | \r | |
98 | if (TotalLength > 0x0000ffff) {\r | |
99 | DEBUG (\r | |
100 | (EFI_D_WARN,\r | |
101 | "\nUdpWrite() Exit #2 %xh (%r)",\r | |
102 | EFI_BAD_BUFFER_SIZE,\r | |
103 | EFI_BAD_BUFFER_SIZE)\r | |
104 | );\r | |
105 | \r | |
106 | return EFI_BAD_BUFFER_SIZE;\r | |
107 | }\r | |
108 | \r | |
109 | if (SrcIpPtr == NULL) {\r | |
110 | SrcIpPtr = &Private->EfiBc.Mode->StationIp;\r | |
111 | }\r | |
112 | \r | |
113 | if (SrcPortPtr == NULL) {\r | |
114 | SrcPortPtr = &DefaultSrcPort;\r | |
115 | OpFlags |= EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT;\r | |
116 | }\r | |
117 | \r | |
118 | if (OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT) {\r | |
119 | *SrcPortPtr = Private->RandomPort;\r | |
120 | \r | |
121 | if (++Private->RandomPort == 0) {\r | |
122 | Private->RandomPort = PXE_RND_PORT_LOW;\r | |
123 | }\r | |
124 | }\r | |
125 | \r | |
126 | #define IpTxBuffer ((IPV4_BUFFER *) Private->TransmitBufferPtr)\r | |
127 | //\r | |
128 | // build pseudo header and udp header in transmit buffer\r | |
129 | //\r | |
130 | #define Udpv4Base ((UDPV4_HEADERS *) (IpTxBuffer->u.Data - sizeof (UDPV4_PSEUDO_HEADER)))\r | |
131 | \r | |
132 | Udpv4Base->Udpv4PseudoHeader.SrcAddr.L = SrcIpPtr->Addr[0];\r | |
133 | Udpv4Base->Udpv4PseudoHeader.DestAddr.L = DestIpPtr->Addr[0];\r | |
134 | Udpv4Base->Udpv4PseudoHeader.Zero = 0;\r | |
135 | Udpv4Base->Udpv4PseudoHeader.Protocol = PROT_UDP;\r | |
136 | Udpv4Base->Udpv4PseudoHeader.TotalLength = HTONS (TotalLength);\r | |
137 | Udpv4Base->Udpv4Header.SrcPort = HTONS (*SrcPortPtr);\r | |
138 | Udpv4Base->Udpv4Header.DestPort = HTONS (*DestPortPtr);\r | |
139 | Udpv4Base->Udpv4Header.TotalLength = Udpv4Base->Udpv4PseudoHeader.TotalLength;\r | |
140 | Udpv4Base->Udpv4Header.Checksum = 0;\r | |
141 | \r | |
142 | if (HeaderSize != 0) {\r | |
143 | CopyMem (IpTxBuffer->u.Udp.Data, HeaderPtr, HeaderSize);\r | |
144 | }\r | |
145 | \r | |
146 | HeaderSize += sizeof (UDPV4_HEADER);\r | |
147 | \r | |
148 | Udpv4Base->Udpv4Header.Checksum = IpChecksum2 (\r | |
149 | (UINT16 *) Udpv4Base,\r | |
150 | HeaderSize + sizeof (UDPV4_PSEUDO_HEADER),\r | |
151 | (UINT16 *) BufferPtr,\r | |
152 | (UINT16) *BufferSizeptr\r | |
153 | );\r | |
154 | \r | |
155 | if (Udpv4Base->Udpv4Header.Checksum == 0) {\r | |
156 | Udpv4Base->Udpv4Header.Checksum = 0xffff;\r | |
157 | //\r | |
158 | // transmit zero checksum as ones complement\r | |
159 | //\r | |
160 | }\r | |
161 | \r | |
162 | return Ip4Send (\r | |
163 | Private,\r | |
164 | OpFlags,\r | |
165 | PROT_UDP,\r | |
166 | Udpv4Base->Udpv4PseudoHeader.SrcAddr.L,\r | |
167 | Udpv4Base->Udpv4PseudoHeader.DestAddr.L,\r | |
168 | (GatewayIpPtr) ? GatewayIpPtr->Addr[0] : 0,\r | |
169 | HeaderSize,\r | |
170 | BufferPtr,\r | |
171 | *BufferSizeptr\r | |
172 | );\r | |
173 | }\r | |
174 | //\r | |
175 | // //////////////////////////////////////////////////////////\r | |
176 | //\r | |
177 | // BC Udp Write Routine\r | |
178 | //\r | |
179 | EFI_STATUS\r | |
180 | EFIAPI\r | |
181 | BcUdpWrite (\r | |
182 | IN EFI_PXE_BASE_CODE_PROTOCOL *This,\r | |
183 | IN UINT16 OpFlags,\r | |
184 | IN EFI_IP_ADDRESS *DestIpPtr,\r | |
185 | IN EFI_PXE_BASE_CODE_UDP_PORT *DestPortPtr,\r | |
186 | IN EFI_IP_ADDRESS *GatewayIpPtr, OPTIONAL\r | |
187 | IN EFI_IP_ADDRESS *SrcIpPtr, OPTIONAL\r | |
188 | IN OUT EFI_PXE_BASE_CODE_UDP_PORT *SrcPortPtr, OPTIONAL\r | |
189 | IN UINTN *HeaderSizePtr, OPTIONAL\r | |
190 | IN VOID *HeaderPtr, OPTIONAL\r | |
191 | IN UINTN *BufferSizeptr,\r | |
192 | IN VOID *BufferPtr\r | |
193 | )\r | |
194 | /*++\r | |
195 | Routine description:\r | |
196 | UDP write API entry point.\r | |
197 | \r | |
198 | Parameters:\r | |
199 | This := Pointer to PxeBc interface.\r | |
200 | OpFlags := \r | |
201 | DestIpPtr := \r | |
202 | DestPortPtr := \r | |
203 | GatewayIpPtr := \r | |
204 | SrcIpPtr := \r | |
205 | SrcPortPtr := \r | |
206 | HeaderSizePtr := \r | |
207 | HeaderPtr := \r | |
208 | BufferSizeptr := \r | |
209 | BufferPtr := \r | |
210 | \r | |
211 | Returns:\r | |
212 | EFI_SUCCESS := \r | |
213 | other := \r | |
214 | --*/\r | |
215 | {\r | |
216 | EFI_STATUS StatCode;\r | |
217 | PXE_BASECODE_DEVICE *Private;\r | |
218 | \r | |
219 | //\r | |
220 | // Lock the instance data and make sure started\r | |
221 | //\r | |
222 | StatCode = EFI_SUCCESS;\r | |
223 | \r | |
224 | if (This == NULL) {\r | |
225 | DEBUG ((EFI_D_ERROR, "BC *This pointer == NULL"));\r | |
226 | return EFI_INVALID_PARAMETER;\r | |
227 | }\r | |
228 | \r | |
229 | Private = CR (This, PXE_BASECODE_DEVICE, EfiBc, PXE_BASECODE_DEVICE_SIGNATURE);\r | |
230 | \r | |
231 | if (Private == NULL) {\r | |
232 | DEBUG ((EFI_D_ERROR, "PXE_BASECODE_DEVICE poiner == NULL"));\r | |
233 | return EFI_INVALID_PARAMETER;\r | |
234 | }\r | |
235 | \r | |
236 | EfiAcquireLock (&Private->Lock);\r | |
237 | \r | |
238 | if (This->Mode == NULL || !This->Mode->Started) {\r | |
239 | DEBUG ((EFI_D_ERROR, "BC was not started."));\r | |
240 | EfiReleaseLock (&Private->Lock);\r | |
241 | return EFI_NOT_STARTED;\r | |
242 | }\r | |
243 | \r | |
244 | Private->Function = EFI_PXE_BASE_CODE_FUNCTION_UDP_WRITE;\r | |
245 | \r | |
246 | //\r | |
247 | // Issue BC command\r | |
248 | //\r | |
249 | StatCode = UdpWrite (\r | |
250 | Private,\r | |
251 | OpFlags,\r | |
252 | DestIpPtr,\r | |
253 | DestPortPtr,\r | |
254 | GatewayIpPtr,\r | |
255 | SrcIpPtr,\r | |
256 | SrcPortPtr,\r | |
257 | HeaderSizePtr,\r | |
258 | HeaderPtr,\r | |
259 | BufferSizeptr,\r | |
260 | BufferPtr\r | |
261 | );\r | |
262 | \r | |
263 | //\r | |
264 | // Unlock the instance data\r | |
265 | //\r | |
266 | EfiReleaseLock (&Private->Lock);\r | |
267 | return StatCode;\r | |
268 | }\r | |
269 | //\r | |
270 | // /////////////////////////////////////////////////////////////////////\r | |
271 | //\r | |
272 | // Udp Read Routine - called by base code - e.g. TFTP - already locked\r | |
273 | //\r | |
274 | EFI_STATUS\r | |
275 | UdpRead (\r | |
276 | IN PXE_BASECODE_DEVICE *Private,\r | |
277 | IN UINT16 OpFlags,\r | |
278 | IN OUT EFI_IP_ADDRESS *DestIpPtr, OPTIONAL\r | |
279 | IN OUT EFI_PXE_BASE_CODE_UDP_PORT *DestPortPtr, OPTIONAL\r | |
280 | IN OUT EFI_IP_ADDRESS *SrcIpPtr, OPTIONAL\r | |
281 | IN OUT EFI_PXE_BASE_CODE_UDP_PORT *SrcPortPtr, OPTIONAL\r | |
282 | IN UINTN *HeaderSizePtr, OPTIONAL\r | |
283 | IN VOID *HeaderPtr, OPTIONAL\r | |
284 | IN OUT UINTN *BufferSizeptr,\r | |
285 | IN VOID *BufferPtr,\r | |
286 | EFI_EVENT TimeoutEvent\r | |
287 | )\r | |
288 | /*++\r | |
289 | Routine description:\r | |
290 | UDP read packet.\r | |
291 | \r | |
292 | Parameters:\r | |
293 | Private := Pointer to PxeBc interface\r | |
294 | OpFlags := \r | |
295 | DestIpPtr := \r | |
296 | DestPortPtr := \r | |
297 | SrcIpPtr := \r | |
298 | SrcPortPtr := \r | |
299 | HeaderSizePtr := \r | |
300 | HeaderPtr := \r | |
301 | BufferSizeptr := \r | |
302 | BufferPtr := \r | |
303 | TimeoutEvent :=\r | |
304 | \r | |
305 | Returns:\r | |
306 | EFI_SUCCESS := \r | |
307 | EFI_INVALID_PARAMETER := \r | |
308 | other := \r | |
309 | --*/\r | |
310 | {\r | |
311 | EFI_STATUS StatCode;\r | |
312 | EFI_IP_ADDRESS TmpSrcIp;\r | |
313 | EFI_IP_ADDRESS TmpDestIp;\r | |
314 | UINTN BufferSize;\r | |
315 | UINTN HeaderSize;\r | |
316 | \r | |
317 | //\r | |
318 | // combination structure of pseudo header/udp header\r | |
319 | //\r | |
320 | #pragma pack (1)\r | |
321 | struct {\r | |
322 | UDPV4_PSEUDO_HEADER Udpv4PseudoHeader;\r | |
323 | UDPV4_HEADER Udpv4Header;\r | |
324 | UINT8 ProtHdr[64];\r | |
325 | } Hdrs;\r | |
326 | #pragma pack ()\r | |
327 | \r | |
328 | HeaderSize = (HeaderSizePtr != NULL) ? *HeaderSizePtr : 0;\r | |
329 | //\r | |
330 | // read [with filtering]\r | |
331 | // check parameters\r | |
332 | //\r | |
333 | if (BufferSizeptr == NULL ||\r | |
334 | BufferPtr == NULL ||\r | |
335 | (HeaderSize != 0 && HeaderPtr == NULL) ||\r | |
336 | (OpFlags &~UDP_FILTER_MASK)\r | |
337 | //\r | |
338 | // if filtering on a particular IP/Port, need it\r | |
339 | //\r | |
340 | ||\r | |
341 | (!(OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_IP) && SrcIpPtr == NULL) ||\r | |
342 | (!(OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT) && SrcPortPtr == NULL) ||\r | |
343 | (!(OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_DEST_PORT) && DestPortPtr == NULL)\r | |
344 | ) {\r | |
345 | DEBUG ((EFI_D_INFO, "\nUdpRead() Exit #1 Invalid Parameter"));\r | |
346 | return EFI_INVALID_PARAMETER;\r | |
347 | }\r | |
348 | \r | |
349 | //\r | |
350 | // in case we loop\r | |
351 | //\r | |
352 | BufferSize = *BufferSizeptr;\r | |
353 | //\r | |
354 | // we need source and dest IPs for pseudo header\r | |
355 | //\r | |
356 | if (SrcIpPtr == NULL) {\r | |
357 | SrcIpPtr = &TmpSrcIp;\r | |
358 | }\r | |
359 | \r | |
360 | if (DestIpPtr == NULL) {\r | |
361 | DestIpPtr = &TmpDestIp;\r | |
362 | CopyMem (&TmpDestIp, &Private->EfiBc.Mode->StationIp, sizeof (TmpDestIp));\r | |
363 | }\r | |
364 | \r | |
365 | #if SUPPORT_IPV6\r | |
366 | if (Private->EfiBc.Mode->UsingIpv6) {\r | |
367 | //\r | |
368 | // %%TBD\r | |
369 | //\r | |
370 | }\r | |
371 | #endif\r | |
372 | \r | |
373 | for (;;) {\r | |
374 | *BufferSizeptr = BufferSize;\r | |
375 | \r | |
376 | StatCode = IpReceive (\r | |
377 | Private,\r | |
378 | OpFlags,\r | |
379 | SrcIpPtr,\r | |
380 | DestIpPtr,\r | |
381 | PROT_UDP,\r | |
382 | &Hdrs.Udpv4Header,\r | |
383 | HeaderSize + sizeof Hdrs.Udpv4Header,\r | |
384 | BufferPtr,\r | |
385 | BufferSizeptr,\r | |
386 | TimeoutEvent\r | |
387 | );\r | |
388 | \r | |
389 | if (StatCode == EFI_SUCCESS || StatCode == EFI_BUFFER_TOO_SMALL) {\r | |
390 | UINT16 SPort;\r | |
391 | UINT16 DPort;\r | |
392 | \r | |
393 | SPort = NTOHS (Hdrs.Udpv4Header.SrcPort);\r | |
394 | DPort = NTOHS (Hdrs.Udpv4Header.DestPort);\r | |
395 | \r | |
396 | //\r | |
397 | // do filtering\r | |
398 | //\r | |
399 | if (!(OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_SRC_PORT) && *SrcPortPtr != SPort) {\r | |
400 | continue;\r | |
401 | }\r | |
402 | \r | |
403 | if (!(OpFlags & EFI_PXE_BASE_CODE_UDP_OPFLAGS_ANY_DEST_PORT) && *DestPortPtr != DPort) {\r | |
404 | continue;\r | |
405 | }\r | |
406 | //\r | |
407 | // check checksum\r | |
408 | //\r | |
409 | if (StatCode == EFI_SUCCESS && Hdrs.Udpv4Header.Checksum) {\r | |
410 | Hdrs.Udpv4PseudoHeader.SrcAddr.L = SrcIpPtr->Addr[0];\r | |
411 | Hdrs.Udpv4PseudoHeader.DestAddr.L = DestIpPtr->Addr[0];\r | |
412 | Hdrs.Udpv4PseudoHeader.Zero = 0;\r | |
413 | Hdrs.Udpv4PseudoHeader.Protocol = PROT_UDP;\r | |
414 | Hdrs.Udpv4PseudoHeader.TotalLength = Hdrs.Udpv4Header.TotalLength;\r | |
415 | \r | |
416 | if (Hdrs.Udpv4Header.Checksum == 0xffff) {\r | |
417 | Hdrs.Udpv4Header.Checksum = 0;\r | |
418 | }\r | |
419 | \r | |
420 | if (IpChecksum2 (\r | |
421 | (UINT16 *) &Hdrs.Udpv4PseudoHeader,\r | |
422 | HeaderSize + sizeof (Hdrs.Udpv4PseudoHeader) + sizeof (Hdrs.Udpv4Header),\r | |
423 | (UINT16 *) BufferPtr,\r | |
424 | *BufferSizeptr\r | |
425 | )) {\r | |
426 | DEBUG (\r | |
427 | (EFI_D_INFO,\r | |
428 | "\nUdpRead() Hdrs.Udpv4PseudoHeader == %Xh",\r | |
429 | &Hdrs.Udpv4PseudoHeader)\r | |
430 | );\r | |
431 | DEBUG (\r | |
432 | (EFI_D_INFO,\r | |
433 | "\nUdpRead() Header size == %d",\r | |
434 | HeaderSize + sizeof (Hdrs.Udpv4PseudoHeader))\r | |
435 | );\r | |
436 | DEBUG (\r | |
437 | (EFI_D_INFO,\r | |
438 | "\nUdpRead() BufferPtr == %Xh",\r | |
439 | BufferPtr)\r | |
440 | );\r | |
441 | DEBUG (\r | |
442 | (EFI_D_INFO,\r | |
443 | "\nUdpRead() Buffer size == %d",\r | |
444 | *BufferSizeptr)\r | |
445 | );\r | |
446 | DEBUG ((EFI_D_INFO, "\nUdpRead() Exit #2 Device Error"));\r | |
447 | return EFI_DEVICE_ERROR;\r | |
448 | }\r | |
449 | }\r | |
450 | //\r | |
451 | // all passed\r | |
452 | //\r | |
453 | if (SrcPortPtr != NULL) {\r | |
454 | *SrcPortPtr = SPort;\r | |
455 | }\r | |
456 | \r | |
457 | if (DestPortPtr != NULL) {\r | |
458 | *DestPortPtr = DPort;\r | |
459 | }\r | |
460 | \r | |
461 | if (HeaderSize != 0) {\r | |
462 | CopyMem (HeaderPtr, Hdrs.ProtHdr, HeaderSize);\r | |
463 | }\r | |
464 | }\r | |
465 | \r | |
4ba61e5e | 466 | if ((StatCode != EFI_SUCCESS) && (StatCode != EFI_TIMEOUT)) {\r |
878ddf1f | 467 | DEBUG (\r |
468 | (EFI_D_INFO,\r | |
469 | "\nUdpRead() Exit #3 %Xh %r",\r | |
470 | StatCode,\r | |
471 | StatCode)\r | |
472 | );\r | |
473 | }\r | |
474 | \r | |
475 | return StatCode;\r | |
476 | }\r | |
477 | }\r | |
478 | //\r | |
479 | // //////////////////////////////////////////////////////////\r | |
480 | //\r | |
481 | // BC Udp Read Routine\r | |
482 | //\r | |
483 | EFI_STATUS\r | |
484 | EFIAPI\r | |
485 | BcUdpRead (\r | |
486 | IN EFI_PXE_BASE_CODE_PROTOCOL *This,\r | |
487 | IN UINT16 OpFlags,\r | |
488 | IN OUT EFI_IP_ADDRESS *DestIp, OPTIONAL\r | |
489 | IN OUT EFI_PXE_BASE_CODE_UDP_PORT *DestPort, OPTIONAL\r | |
490 | IN OUT EFI_IP_ADDRESS *SrcIp, OPTIONAL\r | |
491 | IN OUT EFI_PXE_BASE_CODE_UDP_PORT *SrcPort, OPTIONAL\r | |
492 | IN UINTN *HeaderSize, OPTIONAL\r | |
493 | IN VOID *HeaderPtr, OPTIONAL\r | |
494 | IN OUT UINTN *BufferSize,\r | |
495 | IN VOID *BufferPtr\r | |
496 | )\r | |
497 | /*++\r | |
498 | Routine description:\r | |
499 | UDP read API entry point.\r | |
500 | \r | |
501 | Parameters:\r | |
502 | This := Pointer to PxeBc interface.\r | |
503 | OpFlags := \r | |
504 | DestIpPtr := \r | |
505 | DestPortPtr := \r | |
506 | SrcIpPtr := \r | |
507 | SrcPortPtr := \r | |
508 | HeaderSizePtr := \r | |
509 | HeaderPtr := \r | |
510 | BufferSizeptr := \r | |
511 | BufferPtr := \r | |
512 | \r | |
513 | Returns:\r | |
514 | EFI_SUCCESS := \r | |
515 | other := \r | |
516 | --*/\r | |
517 | {\r | |
518 | EFI_STATUS StatCode;\r | |
519 | PXE_BASECODE_DEVICE *Private;\r | |
520 | \r | |
521 | //\r | |
522 | // Lock the instance data and make sure started\r | |
523 | //\r | |
524 | StatCode = EFI_SUCCESS;\r | |
525 | \r | |
526 | if (This == NULL) {\r | |
527 | DEBUG ((EFI_D_ERROR, "BC *This pointer == NULL"));\r | |
528 | return EFI_INVALID_PARAMETER;\r | |
529 | }\r | |
530 | \r | |
531 | Private = CR (This, PXE_BASECODE_DEVICE, EfiBc, PXE_BASECODE_DEVICE_SIGNATURE);\r | |
532 | \r | |
533 | if (Private == NULL) {\r | |
534 | DEBUG ((EFI_D_ERROR, "PXE_BASECODE_DEVICE poiner == NULL"));\r | |
535 | return EFI_INVALID_PARAMETER;\r | |
536 | }\r | |
537 | \r | |
538 | EfiAcquireLock (&Private->Lock);\r | |
539 | \r | |
540 | if (This->Mode == NULL || !This->Mode->Started) {\r | |
541 | DEBUG ((EFI_D_ERROR, "BC was not started."));\r | |
542 | EfiReleaseLock (&Private->Lock);\r | |
543 | return EFI_NOT_STARTED;\r | |
544 | }\r | |
545 | \r | |
546 | Private->Function = EFI_PXE_BASE_CODE_FUNCTION_UDP_READ;\r | |
547 | \r | |
548 | //\r | |
549 | // Issue BC command\r | |
550 | //\r | |
551 | StatCode = UdpRead (\r | |
552 | Private,\r | |
553 | OpFlags,\r | |
554 | DestIp,\r | |
555 | DestPort,\r | |
556 | SrcIp,\r | |
557 | SrcPort,\r | |
558 | HeaderSize,\r | |
559 | HeaderPtr,\r | |
560 | BufferSize,\r | |
561 | BufferPtr,\r | |
562 | 0\r | |
563 | );\r | |
564 | \r | |
565 | //\r | |
566 | // Unlock the instance data and return\r | |
567 | //\r | |
568 | EfiReleaseLock (&Private->Lock);\r | |
569 | return StatCode;\r | |
570 | }\r | |
571 | \r | |
572 | /* eof - pxe_bc_udp.c */\r |