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Commit | Line | Data |
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2b59fcd5 | 1 | /**@file\r |
d18d8a1d | 2 | Berkeley Packet Filter implementation of the EMU_SNP_PROTOCOL that allows the\r |
2b59fcd5 | 3 | emulator to get on real networks.\r |
4 | \r | |
d18d8a1d | 5 | Tested on Mac OS X.\r |
2b59fcd5 | 6 | \r |
7 | Copyright (c) 2004 - 2009, Intel Corporation. All rights reserved.<BR>\r | |
8 | Portitions copyright (c) 2011, Apple Inc. All rights reserved.\r | |
9 | \r | |
d18d8a1d | 10 | This program and the accompanying materials\r |
11 | are licensed and made available under the terms and conditions of the BSD License\r | |
12 | which accompanies this distribution. The full text of the license may be found at\r | |
13 | http://opensource.org/licenses/bsd-license.php\r | |
14 | \r | |
15 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
16 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
2b59fcd5 | 17 | \r |
18 | **/\r | |
19 | \r | |
20 | \r | |
59ad461d | 21 | #include "Host.h"\r |
2b59fcd5 | 22 | \r |
23 | #ifdef __APPLE__\r | |
24 | \r | |
25 | \r | |
26 | #include <Library/NetLib.h>\r | |
27 | \r | |
28 | \r | |
29 | #define EMU_SNP_PRIVATE_SIGNATURE SIGNATURE_32('E', 'M', 's', 'n')\r | |
30 | typedef struct {\r | |
31 | UINTN Signature;\r | |
32 | \r | |
33 | EMU_IO_THUNK_PROTOCOL *Thunk;\r | |
34 | EMU_SNP_PROTOCOL EmuSnp;\r | |
35 | EFI_SIMPLE_NETWORK_MODE *Mode;\r | |
36 | \r | |
37 | int BpfFd;\r | |
38 | char *InterfaceName;\r | |
39 | EFI_MAC_ADDRESS MacAddress;\r | |
40 | u_int ReadBufferSize;\r | |
41 | VOID *ReadBuffer;\r | |
42 | \r | |
43 | //\r | |
44 | // Two walking pointers to manage the multiple packets that can be returned\r | |
45 | // in a single read.\r | |
46 | //\r | |
47 | VOID *CurrentReadPointer;\r | |
48 | VOID *EndReadPointer;\r | |
49 | \r | |
50 | UINT32 ReceivedPackets;\r | |
51 | UINT32 DroppedPackets;\r | |
52 | \r | |
53 | } EMU_SNP_PRIVATE;\r | |
54 | \r | |
55 | #define EMU_SNP_PRIVATE_DATA_FROM_THIS(a) \\r | |
56 | CR(a, EMU_SNP_PRIVATE, EmuSnp, EMU_SNP_PRIVATE_SIGNATURE)\r | |
57 | \r | |
58 | \r | |
59 | //\r | |
60 | // Strange, but there doesn't appear to be any structure for the Ethernet header in edk2...\r | |
61 | //\r | |
62 | \r | |
63 | typedef struct {\r | |
64 | UINT8 DstAddr[NET_ETHER_ADDR_LEN];\r | |
65 | UINT8 SrcAddr[NET_ETHER_ADDR_LEN];\r | |
66 | UINT16 Type;\r | |
67 | } ETHERNET_HEADER;\r | |
68 | \r | |
69 | /**\r | |
70 | Register storage for SNP Mode.\r | |
71 | \r | |
72 | @param This Protocol instance pointer.\r | |
73 | @param Mode SimpleNetworkProtocol Mode structure passed into driver.\r | |
74 | \r | |
75 | @retval EFI_SUCCESS The network interface was started.\r | |
76 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
77 | \r | |
78 | **/\r | |
79 | EFI_STATUS\r | |
80 | EmuSnpCreateMapping (\r | |
81 | IN EMU_SNP_PROTOCOL *This,\r | |
82 | IN EFI_SIMPLE_NETWORK_MODE *Mode\r | |
83 | )\r | |
84 | {\r | |
85 | EMU_SNP_PRIVATE *Private;\r | |
86 | \r | |
87 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
88 | \r | |
89 | Private->Mode = Mode;\r | |
d18d8a1d | 90 | \r |
2b59fcd5 | 91 | //\r |
92 | // Set the broadcast address.\r | |
93 | //\r | |
94 | SetMem (&Mode->BroadcastAddress, sizeof (EFI_MAC_ADDRESS), 0xFF);\r | |
95 | \r | |
96 | CopyMem (&Mode->CurrentAddress, &Private->MacAddress, sizeof (EFI_MAC_ADDRESS));\r | |
97 | CopyMem (&Mode->PermanentAddress, &Private->MacAddress, sizeof (EFI_MAC_ADDRESS));\r | |
98 | \r | |
99 | //\r | |
100 | // Since the fake SNP is based on a real NIC, to avoid conflict with the host NIC\r | |
101 | // network stack, we use a different MAC address.\r | |
102 | // So just change the last byte of the MAC address for the real NIC.\r | |
103 | //\r | |
104 | Mode->CurrentAddress.Addr[NET_ETHER_ADDR_LEN - 1]++;\r | |
105 | \r | |
106 | return EFI_SUCCESS;\r | |
107 | }\r | |
108 | \r | |
109 | \r | |
110 | static struct bpf_insn mFilterInstructionTemplate[] = {\r | |
111 | // Load 4 bytes from the destination MAC address.\r | |
112 | BPF_STMT (BPF_LD + BPF_W + BPF_ABS, OFFSET_OF (ETHERNET_HEADER, DstAddr[0])),\r | |
113 | \r | |
114 | // Compare to first 4 bytes of fake MAC address.\r | |
115 | BPF_JUMP (BPF_JMP + BPF_JEQ + BPF_K, 0x12345678, 0, 3 ),\r | |
116 | \r | |
117 | // Load remaining 2 bytes from the destination MAC address.\r | |
118 | BPF_STMT (BPF_LD + BPF_H + BPF_ABS, OFFSET_OF( ETHERNET_HEADER, DstAddr[4])),\r | |
119 | \r | |
120 | // Compare to remaining 2 bytes of fake MAC address.\r | |
121 | BPF_JUMP (BPF_JMP + BPF_JEQ + BPF_K, 0x9ABC, 5, 0 ),\r | |
122 | \r | |
123 | // Load 4 bytes from the destination MAC address.\r | |
124 | BPF_STMT (BPF_LD + BPF_W + BPF_ABS, OFFSET_OF (ETHERNET_HEADER, DstAddr[0])),\r | |
125 | \r | |
126 | // Compare to first 4 bytes of broadcast MAC address.\r | |
127 | BPF_JUMP (BPF_JMP + BPF_JEQ + BPF_K, 0xFFFFFFFF, 0, 2),\r | |
128 | \r | |
129 | // Load remaining 2 bytes from the destination MAC address.\r | |
130 | BPF_STMT (BPF_LD + BPF_H + BPF_ABS, OFFSET_OF( ETHERNET_HEADER, DstAddr[4])),\r | |
131 | \r | |
132 | // Compare to remaining 2 bytes of broadcast MAC address.\r | |
133 | BPF_JUMP (BPF_JMP + BPF_JEQ + BPF_K, 0xFFFF, 1, 0),\r | |
134 | \r | |
135 | // Reject packet.\r | |
136 | BPF_STMT (BPF_RET + BPF_K, 0),\r | |
137 | \r | |
138 | // Receive entire packet.\r | |
139 | BPF_STMT (BPF_RET + BPF_K, -1)\r | |
140 | };\r | |
141 | \r | |
142 | \r | |
143 | EFI_STATUS\r | |
144 | OpenBpfFileDescriptor (\r | |
145 | IN EMU_SNP_PRIVATE *Private,\r | |
146 | OUT int *Fd\r | |
147 | )\r | |
148 | {\r | |
149 | char BfpDeviceName[256];\r | |
150 | int Index;\r | |
151 | \r | |
152 | //\r | |
153 | // Open a Berkeley Packet Filter device. This must be done as root, so this is probably\r | |
154 | // the place which is most likely to fail...\r | |
155 | //\r | |
156 | for (Index = 0; TRUE; Index++ ) {\r | |
157 | snprintf (BfpDeviceName, sizeof (BfpDeviceName), "/dev/bpf%d", Index);\r | |
158 | \r | |
159 | *Fd = open (BfpDeviceName, O_RDWR, 0);\r | |
160 | if ( *Fd >= 0 ) {\r | |
161 | return EFI_SUCCESS;\r | |
162 | }\r | |
163 | \r | |
164 | if (errno == EACCES) {\r | |
165 | printf (\r | |
166 | "SNP: Permissions on '%s' are incorrect. Fix with 'sudo chmod 666 %s'.\n",\r | |
d18d8a1d | 167 | BfpDeviceName,\r |
168 | BfpDeviceName\r | |
2b59fcd5 | 169 | );\r |
170 | }\r | |
d18d8a1d | 171 | \r |
2b59fcd5 | 172 | if (errno != EBUSY) {\r |
173 | break;\r | |
174 | }\r | |
175 | }\r | |
176 | \r | |
177 | return EFI_OUT_OF_RESOURCES;\r | |
178 | }\r | |
179 | \r | |
180 | \r | |
181 | /**\r | |
182 | Changes the state of a network interface from "stopped" to "started".\r | |
183 | \r | |
184 | @param This Protocol instance pointer.\r | |
185 | \r | |
186 | @retval EFI_SUCCESS The network interface was started.\r | |
187 | @retval EFI_ALREADY_STARTED The network interface is already in the started state.\r | |
188 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
189 | @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.\r | |
190 | @retval EFI_UNSUPPORTED This function is not supported by the network interface.\r | |
191 | \r | |
192 | **/\r | |
193 | EFI_STATUS\r | |
194 | EmuSnpStart (\r | |
195 | IN EMU_SNP_PROTOCOL *This\r | |
196 | )\r | |
197 | {\r | |
198 | EFI_STATUS Status;\r | |
199 | EMU_SNP_PRIVATE *Private;\r | |
200 | struct ifreq BoundIf;\r | |
201 | struct bpf_program BpfProgram;\r | |
202 | struct bpf_insn *FilterProgram;\r | |
203 | u_int Value;\r | |
204 | u_int ReadBufferSize;\r | |
205 | UINT16 Temp16;\r | |
206 | UINT32 Temp32;\r | |
207 | \r | |
208 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
209 | \r | |
210 | switch (Private->Mode->State) {\r | |
211 | case EfiSimpleNetworkStopped:\r | |
212 | break;\r | |
213 | \r | |
214 | case EfiSimpleNetworkStarted:\r | |
215 | case EfiSimpleNetworkInitialized:\r | |
216 | return EFI_ALREADY_STARTED;\r | |
217 | break;\r | |
218 | \r | |
219 | default:\r | |
220 | return EFI_DEVICE_ERROR;\r | |
221 | break;\r | |
222 | }\r | |
223 | \r | |
224 | Status = EFI_SUCCESS;\r | |
225 | if (Private->BpfFd == 0) {\r | |
226 | Status = OpenBpfFileDescriptor (Private, &Private->BpfFd);\r | |
227 | if (EFI_ERROR (Status)) {\r | |
228 | goto DeviceErrorExit;\r | |
229 | }\r | |
230 | \r | |
231 | //\r | |
232 | // Get the read buffer size.\r | |
233 | //\r | |
234 | if (ioctl (Private->BpfFd, BIOCGBLEN, &ReadBufferSize) < 0) {\r | |
235 | goto DeviceErrorExit;\r | |
236 | }\r | |
d18d8a1d | 237 | \r |
2b59fcd5 | 238 | //\r |
239 | // Default value from BIOCGBLEN is usually too small, so use a much larger size, if necessary.\r | |
240 | //\r | |
241 | if (ReadBufferSize < FixedPcdGet32 (PcdNetworkPacketFilterSize)) {\r | |
242 | ReadBufferSize = FixedPcdGet32 (PcdNetworkPacketFilterSize);\r | |
243 | if (ioctl (Private->BpfFd, BIOCSBLEN, &ReadBufferSize) < 0) {\r | |
244 | goto DeviceErrorExit;\r | |
245 | }\r | |
246 | }\r | |
d18d8a1d | 247 | \r |
2b59fcd5 | 248 | //\r |
249 | // Associate our interface with this BPF file descriptor.\r | |
250 | //\r | |
251 | AsciiStrCpy (BoundIf.ifr_name, Private->InterfaceName);\r | |
252 | if (ioctl (Private->BpfFd, BIOCSETIF, &BoundIf) < 0) {\r | |
253 | goto DeviceErrorExit;\r | |
254 | }\r | |
255 | \r | |
256 | //\r | |
257 | // Enable immediate mode.\r | |
258 | //\r | |
259 | Value = 1;\r | |
260 | if (ioctl (Private->BpfFd, BIOCIMMEDIATE, &Value) < 0) {\r | |
261 | goto DeviceErrorExit;\r | |
262 | }\r | |
263 | \r | |
264 | //\r | |
265 | // Enable non-blocking I/O.\r | |
266 | //\r | |
267 | if (fcntl (Private->BpfFd, F_GETFL, 0) == -1) {\r | |
268 | goto DeviceErrorExit;\r | |
269 | }\r | |
270 | \r | |
271 | Value |= O_NONBLOCK;\r | |
272 | \r | |
273 | if (fcntl (Private->BpfFd, F_SETFL, Value) == -1) {\r | |
274 | goto DeviceErrorExit;\r | |
275 | }\r | |
276 | \r | |
277 | //\r | |
278 | // Disable "header complete" flag. This means the supplied source MAC address is\r | |
279 | // what goes on the wire.\r | |
280 | //\r | |
281 | Value = 1;\r | |
282 | if (ioctl (Private->BpfFd, BIOCSHDRCMPLT, &Value) < 0) {\r | |
283 | goto DeviceErrorExit;\r | |
284 | }\r | |
285 | \r | |
286 | //\r | |
287 | // Allocate read buffer.\r | |
288 | //\r | |
289 | Private->ReadBufferSize = ReadBufferSize;\r | |
290 | Private->ReadBuffer = malloc (Private->ReadBufferSize);\r | |
291 | if (Private->ReadBuffer == NULL) {\r | |
292 | goto ErrorExit;\r | |
293 | }\r | |
294 | \r | |
295 | Private->CurrentReadPointer = Private->EndReadPointer = Private->ReadBuffer;\r | |
296 | \r | |
297 | //\r | |
298 | // Install our packet filter: successful reads should only produce broadcast or unicast\r | |
299 | // packets directed to our fake MAC address.\r | |
300 | //\r | |
301 | FilterProgram = malloc (sizeof (mFilterInstructionTemplate)) ;\r | |
302 | if ( FilterProgram == NULL ) {\r | |
303 | goto ErrorExit;\r | |
304 | }\r | |
d18d8a1d | 305 | \r |
2b59fcd5 | 306 | CopyMem (FilterProgram, &mFilterInstructionTemplate, sizeof (mFilterInstructionTemplate));\r |
307 | \r | |
308 | //\r | |
309 | // Insert out fake MAC address into the filter. The data has to be host endian.\r | |
310 | //\r | |
311 | CopyMem (&Temp32, &Private->Mode->CurrentAddress.Addr[0], sizeof (UINT32));\r | |
312 | FilterProgram[1].k = NTOHL (Temp32);\r | |
313 | CopyMem (&Temp16, &Private->Mode->CurrentAddress.Addr[4], sizeof (UINT16));\r | |
314 | FilterProgram[3].k = NTOHS (Temp16);\r | |
315 | \r | |
316 | BpfProgram.bf_len = sizeof (mFilterInstructionTemplate) / sizeof (struct bpf_insn);\r | |
317 | BpfProgram.bf_insns = FilterProgram;\r | |
318 | \r | |
319 | if (ioctl (Private->BpfFd, BIOCSETF, &BpfProgram) < 0) {\r | |
320 | goto DeviceErrorExit;\r | |
321 | }\r | |
322 | \r | |
323 | free (FilterProgram);\r | |
324 | \r | |
325 | //\r | |
326 | // Enable promiscuous mode.\r | |
327 | //\r | |
328 | if (ioctl (Private->BpfFd, BIOCPROMISC, 0) < 0) {\r | |
329 | goto DeviceErrorExit;\r | |
330 | }\r | |
331 | \r | |
332 | \r | |
d18d8a1d | 333 | Private->Mode->State = EfiSimpleNetworkStarted;\r |
2b59fcd5 | 334 | }\r |
335 | \r | |
336 | return Status;\r | |
337 | \r | |
338 | DeviceErrorExit:\r | |
339 | Status = EFI_DEVICE_ERROR;\r | |
340 | ErrorExit:\r | |
341 | if (Private->ReadBuffer != NULL) {\r | |
342 | free (Private->ReadBuffer);\r | |
343 | Private->ReadBuffer = NULL;\r | |
344 | }\r | |
345 | return Status;\r | |
346 | }\r | |
347 | \r | |
348 | \r | |
349 | /**\r | |
350 | Changes the state of a network interface from "started" to "stopped".\r | |
351 | \r | |
352 | @param This Protocol instance pointer.\r | |
353 | \r | |
354 | @retval EFI_SUCCESS The network interface was stopped.\r | |
355 | @retval EFI_ALREADY_STARTED The network interface is already in the stopped state.\r | |
356 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
357 | @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.\r | |
358 | @retval EFI_UNSUPPORTED This function is not supported by the network interface.\r | |
359 | \r | |
360 | **/\r | |
361 | EFI_STATUS\r | |
362 | EmuSnpStop (\r | |
363 | IN EMU_SNP_PROTOCOL *This\r | |
364 | )\r | |
365 | {\r | |
366 | EMU_SNP_PRIVATE *Private;\r | |
367 | \r | |
368 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
369 | \r | |
370 | switch ( Private->Mode->State ) {\r | |
371 | case EfiSimpleNetworkStarted:\r | |
372 | break;\r | |
373 | \r | |
374 | case EfiSimpleNetworkStopped:\r | |
375 | return EFI_NOT_STARTED;\r | |
376 | break;\r | |
377 | \r | |
378 | default:\r | |
379 | return EFI_DEVICE_ERROR;\r | |
380 | break;\r | |
381 | }\r | |
382 | \r | |
383 | if (Private->BpfFd != 0) {\r | |
384 | close (Private->BpfFd);\r | |
385 | Private->BpfFd = 0;\r | |
386 | }\r | |
387 | \r | |
388 | if (Private->ReadBuffer != NULL) {\r | |
389 | free (Private->ReadBuffer );\r | |
390 | Private->CurrentReadPointer = Private->EndReadPointer = Private->ReadBuffer = NULL;\r | |
391 | }\r | |
392 | \r | |
393 | Private->Mode->State = EfiSimpleNetworkStopped;\r | |
394 | \r | |
395 | return EFI_SUCCESS;\r | |
396 | }\r | |
397 | \r | |
398 | \r | |
399 | /**\r | |
d18d8a1d | 400 | Resets a network adapter and allocates the transmit and receive buffers\r |
401 | required by the network interface; optionally, also requests allocation\r | |
2b59fcd5 | 402 | of additional transmit and receive buffers.\r |
403 | \r | |
404 | @param This The protocol instance pointer.\r | |
405 | @param ExtraRxBufferSize The size, in bytes, of the extra receive buffer space\r | |
406 | that the driver should allocate for the network interface.\r | |
407 | Some network interfaces will not be able to use the extra\r | |
408 | buffer, and the caller will not know if it is actually\r | |
409 | being used.\r | |
410 | @param ExtraTxBufferSize The size, in bytes, of the extra transmit buffer space\r | |
411 | that the driver should allocate for the network interface.\r | |
412 | Some network interfaces will not be able to use the extra\r | |
413 | buffer, and the caller will not know if it is actually\r | |
414 | being used.\r | |
415 | \r | |
416 | @retval EFI_SUCCESS The network interface was initialized.\r | |
417 | @retval EFI_NOT_STARTED The network interface has not been started.\r | |
418 | @retval EFI_OUT_OF_RESOURCES There was not enough memory for the transmit and\r | |
419 | receive buffers.\r | |
420 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
421 | @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.\r | |
422 | @retval EFI_UNSUPPORTED This function is not supported by the network interface.\r | |
423 | \r | |
424 | **/\r | |
425 | EFI_STATUS\r | |
426 | EmuSnpInitialize (\r | |
427 | IN EMU_SNP_PROTOCOL *This,\r | |
428 | IN UINTN ExtraRxBufferSize OPTIONAL,\r | |
429 | IN UINTN ExtraTxBufferSize OPTIONAL\r | |
430 | )\r | |
431 | {\r | |
432 | EMU_SNP_PRIVATE *Private;\r | |
433 | \r | |
434 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
435 | \r | |
436 | switch ( Private->Mode->State ) {\r | |
437 | case EfiSimpleNetworkStarted:\r | |
438 | break;\r | |
439 | \r | |
440 | case EfiSimpleNetworkStopped:\r | |
441 | return EFI_NOT_STARTED;\r | |
442 | break;\r | |
443 | \r | |
444 | default:\r | |
445 | return EFI_DEVICE_ERROR;\r | |
446 | break;\r | |
447 | }\r | |
448 | \r | |
449 | Private->Mode->MCastFilterCount = 0;\r | |
450 | Private->Mode->ReceiveFilterSetting = 0;\r | |
451 | ZeroMem (Private->Mode->MCastFilter, sizeof (Private->Mode->MCastFilter));\r | |
452 | \r | |
453 | Private->Mode->State = EfiSimpleNetworkInitialized;\r | |
454 | \r | |
455 | return EFI_SUCCESS;\r | |
456 | }\r | |
457 | \r | |
458 | \r | |
459 | /**\r | |
d18d8a1d | 460 | Resets a network adapter and re-initializes it with the parameters that were\r |
461 | provided in the previous call to Initialize().\r | |
2b59fcd5 | 462 | \r |
463 | @param This The protocol instance pointer.\r | |
464 | @param ExtendedVerification Indicates that the driver may perform a more\r | |
465 | exhaustive verification operation of the device\r | |
466 | during reset.\r | |
467 | \r | |
468 | @retval EFI_SUCCESS The network interface was reset.\r | |
469 | @retval EFI_NOT_STARTED The network interface has not been started.\r | |
470 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
471 | @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.\r | |
472 | @retval EFI_UNSUPPORTED This function is not supported by the network interface.\r | |
473 | \r | |
474 | **/\r | |
475 | EFI_STATUS\r | |
476 | EmuSnpReset (\r | |
477 | IN EMU_SNP_PROTOCOL *This,\r | |
478 | IN BOOLEAN ExtendedVerification\r | |
479 | )\r | |
480 | {\r | |
481 | EMU_SNP_PRIVATE *Private;\r | |
482 | \r | |
483 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
484 | \r | |
485 | switch ( Private->Mode->State ) {\r | |
486 | case EfiSimpleNetworkInitialized:\r | |
487 | break;\r | |
488 | \r | |
489 | case EfiSimpleNetworkStopped:\r | |
490 | return EFI_NOT_STARTED;\r | |
491 | break;\r | |
492 | \r | |
493 | default:\r | |
494 | return EFI_DEVICE_ERROR;\r | |
495 | break;\r | |
496 | }\r | |
497 | \r | |
498 | return EFI_SUCCESS;\r | |
499 | }\r | |
500 | \r | |
501 | \r | |
502 | /**\r | |
d18d8a1d | 503 | Resets a network adapter and leaves it in a state that is safe for\r |
2b59fcd5 | 504 | another driver to initialize.\r |
505 | \r | |
506 | @param This Protocol instance pointer.\r | |
507 | \r | |
508 | @retval EFI_SUCCESS The network interface was shutdown.\r | |
509 | @retval EFI_NOT_STARTED The network interface has not been started.\r | |
510 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
511 | @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.\r | |
512 | @retval EFI_UNSUPPORTED This function is not supported by the network interface.\r | |
513 | \r | |
514 | **/\r | |
515 | EFI_STATUS\r | |
516 | EmuSnpShutdown (\r | |
517 | IN EMU_SNP_PROTOCOL *This\r | |
518 | )\r | |
519 | {\r | |
520 | EMU_SNP_PRIVATE *Private;\r | |
521 | \r | |
522 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
523 | \r | |
524 | switch ( Private->Mode->State ) {\r | |
525 | case EfiSimpleNetworkInitialized:\r | |
526 | break;\r | |
527 | \r | |
528 | case EfiSimpleNetworkStopped:\r | |
529 | return EFI_NOT_STARTED;\r | |
530 | break;\r | |
531 | \r | |
532 | default:\r | |
533 | return EFI_DEVICE_ERROR;\r | |
534 | break;\r | |
535 | }\r | |
536 | \r | |
537 | Private->Mode->State = EfiSimpleNetworkStarted;\r | |
538 | \r | |
539 | Private->Mode->ReceiveFilterSetting = 0;\r | |
540 | Private->Mode->MCastFilterCount = 0;\r | |
541 | ZeroMem (Private->Mode->MCastFilter, sizeof (Private->Mode->MCastFilter));\r | |
542 | \r | |
543 | if (Private->BpfFd != 0) {\r | |
544 | close (Private->BpfFd);\r | |
545 | Private->BpfFd = 0;\r | |
546 | }\r | |
547 | \r | |
548 | if (Private->ReadBuffer != NULL) {\r | |
549 | free (Private->ReadBuffer);\r | |
550 | Private->CurrentReadPointer = Private->EndReadPointer = Private->ReadBuffer = NULL;\r | |
551 | }\r | |
552 | \r | |
553 | return EFI_SUCCESS;\r | |
554 | }\r | |
555 | \r | |
556 | /**\r | |
557 | Manages the multicast receive filters of a network interface.\r | |
558 | \r | |
559 | @param This The protocol instance pointer.\r | |
560 | @param Enable A bit mask of receive filters to enable on the network interface.\r | |
561 | @param Disable A bit mask of receive filters to disable on the network interface.\r | |
562 | @param ResetMCastFilter Set to TRUE to reset the contents of the multicast receive\r | |
563 | filters on the network interface to their default values.\r | |
564 | @param McastFilterCnt Number of multicast HW MAC addresses in the new\r | |
565 | MCastFilter list. This value must be less than or equal to\r | |
566 | the MCastFilterCnt field of EMU_SNP_MODE. This\r | |
567 | field is optional if ResetMCastFilter is TRUE.\r | |
568 | @param MCastFilter A pointer to a list of new multicast receive filter HW MAC\r | |
569 | addresses. This list will replace any existing multicast\r | |
570 | HW MAC address list. This field is optional if\r | |
571 | ResetMCastFilter is TRUE.\r | |
572 | \r | |
573 | @retval EFI_SUCCESS The multicast receive filter list was updated.\r | |
574 | @retval EFI_NOT_STARTED The network interface has not been started.\r | |
575 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
576 | @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.\r | |
577 | @retval EFI_UNSUPPORTED This function is not supported by the network interface.\r | |
578 | \r | |
579 | **/\r | |
580 | EFI_STATUS\r | |
581 | EmuSnpReceiveFilters (\r | |
582 | IN EMU_SNP_PROTOCOL *This,\r | |
583 | IN UINT32 Enable,\r | |
584 | IN UINT32 Disable,\r | |
585 | IN BOOLEAN ResetMCastFilter,\r | |
586 | IN UINTN MCastFilterCnt OPTIONAL,\r | |
587 | IN EFI_MAC_ADDRESS *MCastFilter OPTIONAL\r | |
588 | )\r | |
589 | {\r | |
590 | EMU_SNP_PRIVATE *Private;\r | |
591 | \r | |
592 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
593 | \r | |
594 | // For now, just succeed...\r | |
595 | return EFI_SUCCESS;\r | |
596 | }\r | |
597 | \r | |
598 | \r | |
599 | /**\r | |
600 | Modifies or resets the current station address, if supported.\r | |
601 | \r | |
602 | @param This The protocol instance pointer.\r | |
603 | @param Reset Flag used to reset the station address to the network interfaces\r | |
604 | permanent address.\r | |
605 | @param New The new station address to be used for the network interface.\r | |
606 | \r | |
607 | @retval EFI_SUCCESS The network interfaces station address was updated.\r | |
608 | @retval EFI_NOT_STARTED The network interface has not been started.\r | |
609 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
610 | @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.\r | |
611 | @retval EFI_UNSUPPORTED This function is not supported by the network interface.\r | |
612 | \r | |
613 | **/\r | |
614 | EFI_STATUS\r | |
615 | EmuSnpStationAddress (\r | |
616 | IN EMU_SNP_PROTOCOL *This,\r | |
617 | IN BOOLEAN Reset,\r | |
618 | IN EFI_MAC_ADDRESS *New OPTIONAL\r | |
619 | )\r | |
620 | {\r | |
621 | EMU_SNP_PRIVATE *Private;\r | |
622 | \r | |
623 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
624 | \r | |
625 | return EFI_UNSUPPORTED;\r | |
626 | }\r | |
627 | \r | |
628 | \r | |
629 | /**\r | |
630 | Resets or collects the statistics on a network interface.\r | |
631 | \r | |
632 | @param This Protocol instance pointer.\r | |
633 | @param Reset Set to TRUE to reset the statistics for the network interface.\r | |
634 | @param StatisticsSize On input the size, in bytes, of StatisticsTable. On\r | |
635 | output the size, in bytes, of the resulting table of\r | |
636 | statistics.\r | |
637 | @param StatisticsTable A pointer to the EFI_NETWORK_STATISTICS structure that\r | |
638 | contains the statistics.\r | |
639 | \r | |
640 | @retval EFI_SUCCESS The statistics were collected from the network interface.\r | |
641 | @retval EFI_NOT_STARTED The network interface has not been started.\r | |
642 | @retval EFI_BUFFER_TOO_SMALL The Statistics buffer was too small. The current buffer\r | |
643 | size needed to hold the statistics is returned in\r | |
644 | StatisticsSize.\r | |
645 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
646 | @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.\r | |
647 | @retval EFI_UNSUPPORTED This function is not supported by the network interface.\r | |
648 | \r | |
649 | **/\r | |
650 | EFI_STATUS\r | |
651 | EmuSnpStatistics (\r | |
652 | IN EMU_SNP_PROTOCOL *This,\r | |
653 | IN BOOLEAN Reset,\r | |
654 | IN OUT UINTN *StatisticsSize OPTIONAL,\r | |
655 | OUT EFI_NETWORK_STATISTICS *StatisticsTable OPTIONAL\r | |
656 | )\r | |
657 | {\r | |
658 | EMU_SNP_PRIVATE *Private;\r | |
659 | \r | |
660 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
661 | \r | |
662 | return EFI_UNSUPPORTED;\r | |
663 | }\r | |
664 | \r | |
665 | \r | |
666 | /**\r | |
667 | Converts a multicast IP address to a multicast HW MAC address.\r | |
668 | \r | |
669 | @param This The protocol instance pointer.\r | |
670 | @param IPv6 Set to TRUE if the multicast IP address is IPv6 [RFC 2460]. Set\r | |
671 | to FALSE if the multicast IP address is IPv4 [RFC 791].\r | |
672 | @param IP The multicast IP address that is to be converted to a multicast\r | |
673 | HW MAC address.\r | |
674 | @param MAC The multicast HW MAC address that is to be generated from IP.\r | |
675 | \r | |
676 | @retval EFI_SUCCESS The multicast IP address was mapped to the multicast\r | |
677 | HW MAC address.\r | |
678 | @retval EFI_NOT_STARTED The network interface has not been started.\r | |
679 | @retval EFI_BUFFER_TOO_SMALL The Statistics buffer was too small. The current buffer\r | |
680 | size needed to hold the statistics is returned in\r | |
681 | StatisticsSize.\r | |
682 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
683 | @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.\r | |
684 | @retval EFI_UNSUPPORTED This function is not supported by the network interface.\r | |
685 | \r | |
686 | **/\r | |
687 | EFI_STATUS\r | |
688 | EmuSnpMCastIpToMac (\r | |
689 | IN EMU_SNP_PROTOCOL *This,\r | |
690 | IN BOOLEAN IPv6,\r | |
691 | IN EFI_IP_ADDRESS *IP,\r | |
692 | OUT EFI_MAC_ADDRESS *MAC\r | |
693 | )\r | |
694 | {\r | |
695 | EMU_SNP_PRIVATE *Private;\r | |
696 | \r | |
697 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
698 | \r | |
699 | return EFI_UNSUPPORTED;\r | |
700 | }\r | |
701 | \r | |
702 | \r | |
703 | /**\r | |
d18d8a1d | 704 | Performs read and write operations on the NVRAM device attached to a\r |
2b59fcd5 | 705 | network interface.\r |
706 | \r | |
707 | @param This The protocol instance pointer.\r | |
708 | @param ReadWrite TRUE for read operations, FALSE for write operations.\r | |
709 | @param Offset Byte offset in the NVRAM device at which to start the read or\r | |
710 | write operation. This must be a multiple of NvRamAccessSize and\r | |
711 | less than NvRamSize.\r | |
712 | @param BufferSize The number of bytes to read or write from the NVRAM device.\r | |
713 | This must also be a multiple of NvramAccessSize.\r | |
714 | @param Buffer A pointer to the data buffer.\r | |
715 | \r | |
716 | @retval EFI_SUCCESS The NVRAM access was performed.\r | |
717 | @retval EFI_NOT_STARTED The network interface has not been started.\r | |
718 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
719 | @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.\r | |
720 | @retval EFI_UNSUPPORTED This function is not supported by the network interface.\r | |
721 | \r | |
722 | **/\r | |
723 | EFI_STATUS\r | |
724 | EmuSnpNvData (\r | |
725 | IN EMU_SNP_PROTOCOL *This,\r | |
726 | IN BOOLEAN ReadWrite,\r | |
727 | IN UINTN Offset,\r | |
728 | IN UINTN BufferSize,\r | |
729 | IN OUT VOID *Buffer\r | |
730 | )\r | |
731 | {\r | |
732 | EMU_SNP_PRIVATE *Private;\r | |
733 | \r | |
734 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
735 | \r | |
736 | return EFI_UNSUPPORTED;\r | |
737 | }\r | |
738 | \r | |
739 | /**\r | |
d18d8a1d | 740 | Reads the current interrupt status and recycled transmit buffer status from\r |
2b59fcd5 | 741 | a network interface.\r |
742 | \r | |
743 | @param This The protocol instance pointer.\r | |
744 | @param InterruptStatus A pointer to the bit mask of the currently active interrupts\r | |
745 | If this is NULL, the interrupt status will not be read from\r | |
746 | the device. If this is not NULL, the interrupt status will\r | |
747 | be read from the device. When the interrupt status is read,\r | |
748 | it will also be cleared. Clearing the transmit interrupt\r | |
749 | does not empty the recycled transmit buffer array.\r | |
750 | @param TxBuf Recycled transmit buffer address. The network interface will\r | |
751 | not transmit if its internal recycled transmit buffer array\r | |
752 | is full. Reading the transmit buffer does not clear the\r | |
753 | transmit interrupt. If this is NULL, then the transmit buffer\r | |
754 | status will not be read. If there are no transmit buffers to\r | |
755 | recycle and TxBuf is not NULL, * TxBuf will be set to NULL.\r | |
756 | \r | |
757 | @retval EFI_SUCCESS The status of the network interface was retrieved.\r | |
758 | @retval EFI_NOT_STARTED The network interface has not been started.\r | |
759 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
760 | @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.\r | |
761 | @retval EFI_UNSUPPORTED This function is not supported by the network interface.\r | |
762 | \r | |
763 | **/\r | |
764 | EFI_STATUS\r | |
765 | EmuSnpGetStatus (\r | |
766 | IN EMU_SNP_PROTOCOL *This,\r | |
767 | OUT UINT32 *InterruptStatus OPTIONAL,\r | |
768 | OUT VOID **TxBuf OPTIONAL\r | |
769 | )\r | |
770 | {\r | |
771 | EMU_SNP_PRIVATE *Private;\r | |
772 | \r | |
773 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
774 | \r | |
775 | if (TxBuf != NULL) {\r | |
776 | *((UINT8 **)TxBuf) = (UINT8 *)1;\r | |
777 | }\r | |
778 | \r | |
779 | if ( InterruptStatus != NULL ) {\r | |
780 | *InterruptStatus = EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;\r | |
781 | }\r | |
782 | \r | |
783 | return EFI_SUCCESS;\r | |
784 | }\r | |
785 | \r | |
786 | \r | |
787 | /**\r | |
788 | Places a packet in the transmit queue of a network interface.\r | |
789 | \r | |
790 | @param This The protocol instance pointer.\r | |
791 | @param HeaderSize The size, in bytes, of the media header to be filled in by\r | |
792 | the Transmit() function. If HeaderSize is non-zero, then it\r | |
793 | must be equal to This->Mode->MediaHeaderSize and the DestAddr\r | |
794 | and Protocol parameters must not be NULL.\r | |
795 | @param BufferSize The size, in bytes, of the entire packet (media header and\r | |
796 | data) to be transmitted through the network interface.\r | |
797 | @param Buffer A pointer to the packet (media header followed by data) to be\r | |
798 | transmitted. This parameter cannot be NULL. If HeaderSize is zero,\r | |
799 | then the media header in Buffer must already be filled in by the\r | |
800 | caller. If HeaderSize is non-zero, then the media header will be\r | |
801 | filled in by the Transmit() function.\r | |
802 | @param SrcAddr The source HW MAC address. If HeaderSize is zero, then this parameter\r | |
803 | is ignored. If HeaderSize is non-zero and SrcAddr is NULL, then\r | |
804 | This->Mode->CurrentAddress is used for the source HW MAC address.\r | |
805 | @param DestAddr The destination HW MAC address. If HeaderSize is zero, then this\r | |
806 | parameter is ignored.\r | |
807 | @param Protocol The type of header to build. If HeaderSize is zero, then this\r | |
808 | parameter is ignored. See RFC 1700, section "Ether Types", for\r | |
809 | examples.\r | |
810 | \r | |
811 | @retval EFI_SUCCESS The packet was placed on the transmit queue.\r | |
812 | @retval EFI_NOT_STARTED The network interface has not been started.\r | |
d18d8a1d | 813 | @retval EFI_NOT_READY The network interface is too busy to accept this transmit request.\r |
2b59fcd5 | 814 | @retval EFI_BUFFER_TOO_SMALL The BufferSize parameter is too small.\r |
815 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
816 | @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.\r | |
817 | @retval EFI_UNSUPPORTED This function is not supported by the network interface.\r | |
818 | \r | |
819 | **/\r | |
820 | EFI_STATUS\r | |
821 | EmuSnpTransmit (\r | |
822 | IN EMU_SNP_PROTOCOL *This,\r | |
823 | IN UINTN HeaderSize,\r | |
824 | IN UINTN BufferSize,\r | |
825 | IN VOID *Buffer,\r | |
826 | IN EFI_MAC_ADDRESS *SrcAddr OPTIONAL,\r | |
827 | IN EFI_MAC_ADDRESS *DestAddr OPTIONAL,\r | |
828 | IN UINT16 *Protocol OPTIONAL\r | |
829 | )\r | |
830 | {\r | |
831 | EMU_SNP_PRIVATE *Private;\r | |
832 | ETHERNET_HEADER *EnetHeader;\r | |
833 | \r | |
834 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
835 | \r | |
836 | if (Private->Mode->State < EfiSimpleNetworkStarted) {\r | |
837 | return EFI_NOT_STARTED;\r | |
838 | }\r | |
839 | \r | |
840 | if ( HeaderSize != 0 ) {\r | |
841 | if ((DestAddr == NULL) || (Protocol == NULL) || (HeaderSize != Private->Mode->MediaHeaderSize)) {\r | |
842 | return EFI_INVALID_PARAMETER;\r | |
843 | }\r | |
844 | \r | |
845 | if (SrcAddr == NULL) {\r | |
846 | SrcAddr = &Private->Mode->CurrentAddress;\r | |
847 | }\r | |
848 | \r | |
849 | EnetHeader = (ETHERNET_HEADER *) Buffer;\r | |
850 | \r | |
851 | CopyMem (EnetHeader->DstAddr, DestAddr, NET_ETHER_ADDR_LEN);\r | |
852 | CopyMem (EnetHeader->SrcAddr, SrcAddr, NET_ETHER_ADDR_LEN);\r | |
853 | \r | |
854 | EnetHeader->Type = HTONS(*Protocol);\r | |
855 | }\r | |
856 | \r | |
857 | if (write (Private->BpfFd, Buffer, BufferSize) < 0) {\r | |
858 | return EFI_DEVICE_ERROR;\r | |
859 | }\r | |
d18d8a1d | 860 | \r |
2b59fcd5 | 861 | return EFI_SUCCESS;\r |
862 | }\r | |
863 | \r | |
864 | /**\r | |
865 | Receives a packet from a network interface.\r | |
866 | \r | |
867 | @param This The protocol instance pointer.\r | |
868 | @param HeaderSize The size, in bytes, of the media header received on the network\r | |
869 | interface. If this parameter is NULL, then the media header size\r | |
870 | will not be returned.\r | |
871 | @param BufferSize On entry, the size, in bytes, of Buffer. On exit, the size, in\r | |
872 | bytes, of the packet that was received on the network interface.\r | |
873 | @param Buffer A pointer to the data buffer to receive both the media header and\r | |
874 | the data.\r | |
875 | @param SrcAddr The source HW MAC address. If this parameter is NULL, the\r | |
876 | HW MAC source address will not be extracted from the media\r | |
877 | header.\r | |
878 | @param DestAddr The destination HW MAC address. If this parameter is NULL,\r | |
879 | the HW MAC destination address will not be extracted from the\r | |
880 | media header.\r | |
881 | @param Protocol The media header type. If this parameter is NULL, then the\r | |
882 | protocol will not be extracted from the media header. See\r | |
883 | RFC 1700 section "Ether Types" for examples.\r | |
884 | \r | |
885 | @retval EFI_SUCCESS The received data was stored in Buffer, and BufferSize has\r | |
886 | been updated to the number of bytes received.\r | |
887 | @retval EFI_NOT_STARTED The network interface has not been started.\r | |
888 | @retval EFI_NOT_READY The network interface is too busy to accept this transmit\r | |
889 | request.\r | |
890 | @retval EFI_BUFFER_TOO_SMALL The BufferSize parameter is too small.\r | |
891 | @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r | |
892 | @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.\r | |
893 | @retval EFI_UNSUPPORTED This function is not supported by the network interface.\r | |
894 | \r | |
895 | **/\r | |
896 | EFI_STATUS\r | |
897 | EmuSnpReceive (\r | |
898 | IN EMU_SNP_PROTOCOL *This,\r | |
899 | OUT UINTN *HeaderSize OPTIONAL,\r | |
900 | IN OUT UINTN *BufferSize,\r | |
901 | OUT VOID *Buffer,\r | |
902 | OUT EFI_MAC_ADDRESS *SrcAddr OPTIONAL,\r | |
903 | OUT EFI_MAC_ADDRESS *DestAddr OPTIONAL,\r | |
904 | OUT UINT16 *Protocol OPTIONAL\r | |
905 | )\r | |
906 | {\r | |
907 | EMU_SNP_PRIVATE *Private;\r | |
908 | struct bpf_hdr *BpfHeader;\r | |
909 | struct bpf_stat BpfStats;\r | |
910 | ETHERNET_HEADER *EnetHeader;\r | |
911 | ssize_t Result;\r | |
912 | \r | |
913 | Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);\r | |
914 | \r | |
915 | if (Private->Mode->State < EfiSimpleNetworkStarted) {\r | |
916 | return EFI_NOT_STARTED;\r | |
917 | }\r | |
918 | \r | |
919 | ZeroMem (&BpfStats, sizeof( BpfStats));\r | |
d18d8a1d | 920 | \r |
2b59fcd5 | 921 | if (ioctl (Private->BpfFd, BIOCGSTATS, &BpfStats) == 0) {\r |
922 | Private->ReceivedPackets += BpfStats.bs_recv;\r | |
923 | if (BpfStats.bs_drop > Private->DroppedPackets) {\r | |
924 | printf (\r | |
925 | "SNP: STATS: RCVD = %d DROPPED = %d. Probably need to increase BPF PcdNetworkPacketFilterSize?\n",\r | |
d18d8a1d | 926 | BpfStats.bs_recv,\r |
2b59fcd5 | 927 | BpfStats.bs_drop - Private->DroppedPackets\r |
928 | );\r | |
929 | Private->DroppedPackets = BpfStats.bs_drop;\r | |
930 | }\r | |
931 | }\r | |
932 | \r | |
933 | //\r | |
934 | // Do we have any remaining packets from the previous read?\r | |
935 | //\r | |
936 | if (Private->CurrentReadPointer >= Private->EndReadPointer) {\r | |
937 | Result = read (Private->BpfFd, Private->ReadBuffer, Private->ReadBufferSize);\r | |
938 | if (Result < 0) {\r | |
939 | // EAGAIN means that there's no I/O outstanding against this file descriptor.\r | |
940 | return (errno == EAGAIN) ? EFI_NOT_READY : EFI_DEVICE_ERROR;\r | |
941 | }\r | |
942 | \r | |
943 | if (Result == 0) {\r | |
944 | return EFI_NOT_READY;\r | |
945 | }\r | |
946 | \r | |
947 | Private->CurrentReadPointer = Private->ReadBuffer;\r | |
948 | Private->EndReadPointer = Private->CurrentReadPointer + Result;\r | |
949 | }\r | |
950 | \r | |
951 | BpfHeader = Private->CurrentReadPointer;\r | |
952 | EnetHeader = Private->CurrentReadPointer + BpfHeader->bh_hdrlen;\r | |
953 | \r | |
954 | if (BpfHeader->bh_caplen > *BufferSize) {\r | |
955 | *BufferSize = BpfHeader->bh_caplen;\r | |
956 | return EFI_BUFFER_TOO_SMALL;\r | |
957 | }\r | |
958 | \r | |
959 | CopyMem (Buffer, EnetHeader, BpfHeader->bh_caplen);\r | |
960 | *BufferSize = BpfHeader->bh_caplen;\r | |
961 | \r | |
962 | if (HeaderSize != NULL) {\r | |
963 | *HeaderSize = sizeof (ETHERNET_HEADER);\r | |
964 | }\r | |
965 | \r | |
966 | if (DestAddr != NULL) {\r | |
967 | ZeroMem (DestAddr, sizeof (EFI_MAC_ADDRESS));\r | |
968 | CopyMem (DestAddr, EnetHeader->DstAddr, NET_ETHER_ADDR_LEN);\r | |
969 | }\r | |
970 | \r | |
971 | if (SrcAddr != NULL) {\r | |
972 | ZeroMem (SrcAddr, sizeof (EFI_MAC_ADDRESS));\r | |
973 | CopyMem (SrcAddr, EnetHeader->SrcAddr, NET_ETHER_ADDR_LEN);\r | |
974 | }\r | |
975 | \r | |
976 | if (Protocol != NULL) {\r | |
977 | *Protocol = NTOHS (EnetHeader->Type);\r | |
978 | }\r | |
979 | \r | |
980 | Private->CurrentReadPointer += BPF_WORDALIGN (BpfHeader->bh_hdrlen + BpfHeader->bh_caplen);\r | |
981 | return EFI_SUCCESS;\r | |
982 | }\r | |
983 | \r | |
984 | \r | |
985 | EMU_SNP_PROTOCOL gEmuSnpProtocol = {\r | |
986 | GasketSnpCreateMapping,\r | |
987 | GasketSnpStart,\r | |
988 | GasketSnpStop,\r | |
989 | GasketSnpInitialize,\r | |
990 | GasketSnpReset,\r | |
991 | GasketSnpShutdown,\r | |
992 | GasketSnpReceiveFilters,\r | |
993 | GasketSnpStationAddress,\r | |
994 | GasketSnpStatistics,\r | |
995 | GasketSnpMCastIpToMac,\r | |
996 | GasketSnpNvData,\r | |
997 | GasketSnpGetStatus,\r | |
998 | GasketSnpTransmit,\r | |
999 | GasketSnpReceive\r | |
1000 | };\r | |
1001 | \r | |
1002 | EFI_STATUS\r | |
1003 | GetInterfaceMacAddr (\r | |
1004 | EMU_SNP_PRIVATE *Private\r | |
1005 | )\r | |
1006 | {\r | |
1007 | EFI_STATUS Status;\r | |
1008 | struct ifaddrs *IfAddrs;\r | |
1009 | struct ifaddrs *If;\r | |
1010 | struct sockaddr_dl *IfSdl;\r | |
1011 | \r | |
1012 | if (getifaddrs (&IfAddrs) != 0) {\r | |
1013 | return EFI_UNSUPPORTED;\r | |
1014 | }\r | |
1015 | \r | |
1016 | //\r | |
1017 | // Convert the interface name to ASCII so we can find it.\r | |
1018 | //\r | |
1019 | Private->InterfaceName = malloc (StrSize (Private->Thunk->ConfigString));\r | |
1020 | if (Private->InterfaceName == NULL) {\r | |
1021 | Status = EFI_OUT_OF_RESOURCES;\r | |
1022 | goto Exit;\r | |
1023 | }\r | |
1024 | \r | |
1025 | UnicodeStrToAsciiStr (Private->Thunk->ConfigString, Private->InterfaceName);\r | |
1026 | \r | |
1027 | Status = EFI_NOT_FOUND;\r | |
1028 | If = IfAddrs;\r | |
1029 | while (If != NULL) {\r | |
1030 | IfSdl = (struct sockaddr_dl *)If->ifa_addr;\r | |
1031 | \r | |
1032 | if (IfSdl->sdl_family == AF_LINK) {\r | |
1033 | if (!AsciiStrCmp( Private->InterfaceName, If->ifa_name)) {\r | |
1034 | CopyMem (&Private->MacAddress, LLADDR (IfSdl), NET_ETHER_ADDR_LEN);\r | |
1035 | \r | |
1036 | Status = EFI_SUCCESS;\r | |
1037 | break;\r | |
1038 | }\r | |
1039 | }\r | |
1040 | \r | |
1041 | If = If->ifa_next;\r | |
1042 | }\r | |
1043 | \r | |
1044 | Exit:\r | |
1045 | freeifaddrs (IfAddrs);\r | |
1046 | return Status;\r | |
1047 | }\r | |
1048 | \r | |
1049 | \r | |
1050 | EFI_STATUS\r | |
1051 | EmuSnpThunkOpen (\r | |
1052 | IN EMU_IO_THUNK_PROTOCOL *This\r | |
1053 | )\r | |
1054 | {\r | |
1055 | EMU_SNP_PRIVATE *Private;\r | |
d18d8a1d | 1056 | \r |
2b59fcd5 | 1057 | if (This->Private != NULL) {\r |
1058 | return EFI_ALREADY_STARTED;\r | |
1059 | }\r | |
d18d8a1d | 1060 | \r |
2b59fcd5 | 1061 | if (!CompareGuid (This->Protocol, &gEmuSnpProtocolGuid)) {\r |
1062 | return EFI_UNSUPPORTED;\r | |
1063 | }\r | |
d18d8a1d | 1064 | \r |
2b59fcd5 | 1065 | Private = malloc (sizeof (EMU_SNP_PRIVATE));\r |
1066 | if (Private == NULL) {\r | |
1067 | return EFI_OUT_OF_RESOURCES;\r | |
1068 | }\r | |
1069 | \r | |
d18d8a1d | 1070 | \r |
2b59fcd5 | 1071 | Private->Signature = EMU_SNP_PRIVATE_SIGNATURE;\r |
1072 | Private->Thunk = This;\r | |
1073 | CopyMem (&Private->EmuSnp, &gEmuSnpProtocol, sizeof (gEmuSnpProtocol));\r | |
1074 | GetInterfaceMacAddr (Private);\r | |
d18d8a1d | 1075 | \r |
2b59fcd5 | 1076 | This->Interface = &Private->EmuSnp;\r |
1077 | This->Private = Private;\r | |
1078 | return EFI_SUCCESS;\r | |
1079 | }\r | |
1080 | \r | |
1081 | \r | |
1082 | EFI_STATUS\r | |
1083 | EmuSnpThunkClose (\r | |
1084 | IN EMU_IO_THUNK_PROTOCOL *This\r | |
1085 | )\r | |
1086 | {\r | |
1087 | EMU_SNP_PRIVATE *Private;\r | |
1088 | \r | |
1089 | if (!CompareGuid (This->Protocol, &gEmuSnpProtocolGuid)) {\r | |
1090 | return EFI_UNSUPPORTED;\r | |
1091 | }\r | |
d18d8a1d | 1092 | \r |
2b59fcd5 | 1093 | Private = This->Private;\r |
1094 | free (Private);\r | |
d18d8a1d | 1095 | \r |
2b59fcd5 | 1096 | return EFI_SUCCESS;\r |
1097 | }\r | |
1098 | \r | |
1099 | \r | |
1100 | \r | |
1101 | EMU_IO_THUNK_PROTOCOL gSnpThunkIo = {\r | |
1102 | &gEmuSnpProtocolGuid,\r | |
1103 | NULL,\r | |
1104 | NULL,\r | |
1105 | 0,\r | |
1106 | GasketSnpThunkOpen,\r | |
1107 | GasketSnpThunkClose,\r | |
1108 | NULL\r | |
1109 | };\r | |
1110 | \r | |
1111 | #endif\r |