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772db4bb | 1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2005 - 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 | |
11 | \r | |
12 | \r | |
13 | Module Name:\r | |
14 | \r | |
15 | Ip4If.c\r | |
16 | \r | |
17 | Abstract:\r | |
18 | \r | |
19 | Implement IP4 pesudo interface.\r | |
20 | \r | |
21 | \r | |
22 | **/\r | |
23 | \r | |
24 | #include "Ip4Impl.h"\r | |
25 | \r | |
26 | //\r | |
27 | // Mac address with all zero, used to determine whethter the ARP\r | |
28 | // resolve succeeded. Failed ARP requests zero the MAC address buffer.\r | |
29 | //\r | |
fe1e36e5 | 30 | EFI_MAC_ADDRESS mZeroMacAddress;\r |
772db4bb | 31 | \r |
36ee91ca | 32 | VOID\r |
33 | EFIAPI\r | |
34 | Ip4OnFrameSentDpc (\r | |
35 | IN VOID *Context\r | |
36 | );\r | |
37 | \r | |
772db4bb | 38 | VOID\r |
39 | EFIAPI\r | |
40 | Ip4OnFrameSent (\r | |
41 | IN EFI_EVENT Event,\r | |
42 | IN VOID *Context\r | |
43 | );\r | |
44 | \r | |
36ee91ca | 45 | VOID\r |
46 | EFIAPI\r | |
47 | Ip4OnArpResolvedDpc (\r | |
48 | IN VOID *Context\r | |
49 | );\r | |
50 | \r | |
772db4bb | 51 | VOID\r |
52 | EFIAPI\r | |
53 | Ip4OnArpResolved (\r | |
54 | IN EFI_EVENT Event,\r | |
55 | IN VOID *Context\r | |
56 | );\r | |
57 | \r | |
36ee91ca | 58 | VOID\r |
59 | EFIAPI\r | |
60 | Ip4OnFrameReceivedDpc (\r | |
61 | IN VOID *Context\r | |
62 | );\r | |
63 | \r | |
772db4bb | 64 | VOID\r |
65 | EFIAPI\r | |
66 | Ip4OnFrameReceived (\r | |
67 | IN EFI_EVENT Event,\r | |
68 | IN VOID *Context\r | |
69 | );\r | |
70 | \r | |
772db4bb | 71 | VOID\r |
72 | Ip4CancelFrameArp (\r | |
73 | IN IP4_ARP_QUE *ArpQue,\r | |
74 | IN EFI_STATUS IoStatus,\r | |
75 | IN IP4_FRAME_TO_CANCEL FrameToCancel, OPTIONAL\r | |
76 | IN VOID *Context\r | |
77 | );\r | |
78 | \r | |
79 | \r | |
80 | /**\r | |
81 | Wrap a transmit request into a newly allocated IP4_LINK_TX_TOKEN.\r | |
82 | \r | |
83 | @param Interface The interface to send out from\r | |
84 | @param IpInstance The IpInstance that transmit the packet. NULL if\r | |
85 | the packet is sent by the IP4 driver itself.\r | |
86 | @param Packet The packet to transmit\r | |
87 | @param CallBack Call back function to execute if transmission\r | |
88 | finished.\r | |
89 | @param Context Opaque parameter to the call back.\r | |
90 | \r | |
91 | @return The wrapped token if succeed or NULL\r | |
92 | \r | |
93 | **/\r | |
772db4bb | 94 | IP4_LINK_TX_TOKEN *\r |
95 | Ip4WrapLinkTxToken (\r | |
96 | IN IP4_INTERFACE *Interface,\r | |
97 | IN IP4_PROTOCOL *IpInstance, OPTIONAL\r | |
98 | IN NET_BUF *Packet,\r | |
99 | IN IP4_FRAME_CALLBACK CallBack,\r | |
100 | IN VOID *Context\r | |
101 | )\r | |
102 | {\r | |
103 | EFI_MANAGED_NETWORK_COMPLETION_TOKEN *MnpToken;\r | |
104 | EFI_MANAGED_NETWORK_TRANSMIT_DATA *MnpTxData;\r | |
105 | IP4_LINK_TX_TOKEN *Token;\r | |
106 | EFI_STATUS Status;\r | |
107 | UINT32 Count;\r | |
108 | \r | |
e48e37fc | 109 | Token = AllocatePool (sizeof (IP4_LINK_TX_TOKEN) + \\r |
772db4bb | 110 | (Packet->BlockOpNum - 1) * sizeof (EFI_MANAGED_NETWORK_FRAGMENT_DATA));\r |
111 | \r | |
112 | if (Token == NULL) {\r | |
113 | return NULL;\r | |
114 | }\r | |
115 | \r | |
116 | Token->Signature = IP4_FRAME_TX_SIGNATURE;\r | |
e48e37fc | 117 | InitializeListHead (&Token->Link);\r |
772db4bb | 118 | \r |
119 | Token->Interface = Interface;\r | |
120 | Token->IpInstance = IpInstance;\r | |
121 | Token->CallBack = CallBack;\r | |
122 | Token->Packet = Packet;\r | |
123 | Token->Context = Context;\r | |
687a2e5f | 124 | CopyMem (&Token->DstMac, &mZeroMacAddress, sizeof (Token->DstMac));\r |
125 | CopyMem (&Token->SrcMac, &Interface->Mac, sizeof (Token->SrcMac));\r | |
772db4bb | 126 | \r |
127 | MnpToken = &(Token->MnpToken);\r | |
128 | MnpToken->Status = EFI_NOT_READY;\r | |
129 | \r | |
130 | Status = gBS->CreateEvent (\r | |
131 | EVT_NOTIFY_SIGNAL,\r | |
e48e37fc | 132 | TPL_NOTIFY,\r |
772db4bb | 133 | Ip4OnFrameSent,\r |
134 | Token,\r | |
135 | &MnpToken->Event\r | |
136 | );\r | |
137 | \r | |
138 | if (EFI_ERROR (Status)) {\r | |
e48e37fc | 139 | gBS->FreePool (Token);\r |
772db4bb | 140 | return NULL;\r |
141 | }\r | |
142 | \r | |
143 | MnpTxData = &Token->MnpTxData;\r | |
144 | MnpToken->Packet.TxData = MnpTxData;\r | |
145 | \r | |
146 | MnpTxData->DestinationAddress = &Token->DstMac;\r | |
147 | MnpTxData->SourceAddress = &Token->SrcMac;\r | |
148 | MnpTxData->ProtocolType = IP4_ETHER_PROTO;\r | |
149 | MnpTxData->DataLength = Packet->TotalSize;\r | |
150 | MnpTxData->HeaderLength = 0;\r | |
151 | \r | |
152 | Count = Packet->BlockOpNum;\r | |
153 | \r | |
154 | NetbufBuildExt (Packet, (NET_FRAGMENT *) MnpTxData->FragmentTable, &Count);\r | |
155 | MnpTxData->FragmentCount = (UINT16)Count;\r | |
156 | \r | |
157 | return Token;\r | |
158 | }\r | |
159 | \r | |
160 | \r | |
161 | /**\r | |
162 | Free the link layer transmit token. It will close the event\r | |
163 | then free the memory used.\r | |
164 | \r | |
165 | @param Token Token to free\r | |
166 | \r | |
167 | @return NONE\r | |
168 | \r | |
169 | **/\r | |
772db4bb | 170 | VOID\r |
171 | Ip4FreeLinkTxToken (\r | |
172 | IN IP4_LINK_TX_TOKEN *Token\r | |
173 | )\r | |
174 | {\r | |
175 | NET_CHECK_SIGNATURE (Token, IP4_FRAME_TX_SIGNATURE);\r | |
176 | \r | |
177 | gBS->CloseEvent (Token->MnpToken.Event);\r | |
e48e37fc | 178 | gBS->FreePool (Token);\r |
772db4bb | 179 | }\r |
180 | \r | |
181 | \r | |
182 | /**\r | |
183 | Create an IP_ARP_QUE structure to request ARP service.\r | |
184 | \r | |
185 | @param Interface The interface to send ARP from.\r | |
186 | @param DestIp The destination IP (host byte order) to request MAC\r | |
187 | for\r | |
188 | \r | |
189 | @return Point to newly created IP4_ARP_QUE if succeed, otherwise NULL.\r | |
190 | \r | |
191 | **/\r | |
772db4bb | 192 | IP4_ARP_QUE *\r |
193 | Ip4CreateArpQue (\r | |
194 | IN IP4_INTERFACE *Interface,\r | |
195 | IN IP4_ADDR DestIp\r | |
196 | )\r | |
197 | {\r | |
198 | IP4_ARP_QUE *ArpQue;\r | |
199 | EFI_STATUS Status;\r | |
200 | \r | |
e48e37fc | 201 | ArpQue = AllocatePool (sizeof (IP4_ARP_QUE));\r |
772db4bb | 202 | \r |
203 | if (ArpQue == NULL) {\r | |
204 | return NULL;\r | |
205 | }\r | |
206 | \r | |
207 | ArpQue->Signature = IP4_FRAME_ARP_SIGNATURE;\r | |
e48e37fc | 208 | InitializeListHead (&ArpQue->Link);\r |
772db4bb | 209 | \r |
e48e37fc | 210 | InitializeListHead (&ArpQue->Frames);\r |
772db4bb | 211 | ArpQue->Interface = Interface;\r |
212 | \r | |
213 | Status = gBS->CreateEvent (\r | |
214 | EVT_NOTIFY_SIGNAL,\r | |
e48e37fc | 215 | TPL_NOTIFY,\r |
772db4bb | 216 | Ip4OnArpResolved,\r |
217 | ArpQue,\r | |
218 | &ArpQue->OnResolved\r | |
219 | );\r | |
220 | \r | |
221 | if (EFI_ERROR (Status)) {\r | |
e48e37fc | 222 | gBS->FreePool (ArpQue);\r |
772db4bb | 223 | return NULL;\r |
224 | }\r | |
225 | \r | |
226 | ArpQue->Ip = DestIp;\r | |
687a2e5f | 227 | CopyMem (&ArpQue->Mac, &mZeroMacAddress, sizeof (ArpQue->Mac));\r |
772db4bb | 228 | \r |
229 | return ArpQue;\r | |
230 | }\r | |
231 | \r | |
232 | \r | |
233 | /**\r | |
234 | Remove all the transmit requests queued on the ARP queue, then free it.\r | |
235 | \r | |
236 | @param ArpQue Arp queue to free\r | |
237 | @param IoStatus The transmit status returned to transmit requests'\r | |
238 | callback.\r | |
239 | \r | |
240 | @return NONE\r | |
241 | \r | |
242 | **/\r | |
772db4bb | 243 | VOID\r |
244 | Ip4FreeArpQue (\r | |
245 | IN IP4_ARP_QUE *ArpQue,\r | |
246 | IN EFI_STATUS IoStatus\r | |
247 | )\r | |
248 | {\r | |
249 | NET_CHECK_SIGNATURE (ArpQue, IP4_FRAME_ARP_SIGNATURE);\r | |
250 | \r | |
251 | //\r | |
252 | // Remove all the frame waiting the ARP response\r | |
253 | //\r | |
254 | Ip4CancelFrameArp (ArpQue, IoStatus, NULL, NULL);\r | |
255 | \r | |
256 | gBS->CloseEvent (ArpQue->OnResolved);\r | |
e48e37fc | 257 | gBS->FreePool (ArpQue);\r |
772db4bb | 258 | }\r |
259 | \r | |
260 | \r | |
261 | /**\r | |
262 | Create a link layer receive token to wrap the receive request\r | |
263 | \r | |
264 | @param Interface The interface to receive from\r | |
265 | @param IpInstance The instance that request the receive (NULL for IP4\r | |
266 | driver itself)\r | |
267 | @param CallBack Call back function to execute when finished.\r | |
268 | @param Context Opaque parameters to the callback\r | |
269 | \r | |
270 | @return Point to created IP4_LINK_RX_TOKEN if succeed, otherwise NULL.\r | |
271 | \r | |
272 | **/\r | |
772db4bb | 273 | IP4_LINK_RX_TOKEN *\r |
274 | Ip4CreateLinkRxToken (\r | |
275 | IN IP4_INTERFACE *Interface,\r | |
276 | IN IP4_PROTOCOL *IpInstance,\r | |
277 | IN IP4_FRAME_CALLBACK CallBack,\r | |
278 | IN VOID *Context\r | |
279 | )\r | |
280 | {\r | |
281 | EFI_MANAGED_NETWORK_COMPLETION_TOKEN *MnpToken;\r | |
282 | IP4_LINK_RX_TOKEN *Token;\r | |
283 | EFI_STATUS Status;\r | |
284 | \r | |
e48e37fc | 285 | Token = AllocatePool (sizeof (IP4_LINK_RX_TOKEN));\r |
772db4bb | 286 | if (Token == NULL) {\r |
287 | return NULL;\r | |
288 | }\r | |
289 | \r | |
290 | Token->Signature = IP4_FRAME_RX_SIGNATURE;\r | |
291 | Token->Interface = Interface;\r | |
292 | Token->IpInstance = IpInstance;\r | |
293 | Token->CallBack = CallBack;\r | |
294 | Token->Context = Context;\r | |
295 | \r | |
296 | MnpToken = &Token->MnpToken;\r | |
297 | MnpToken->Status = EFI_NOT_READY;\r | |
298 | \r | |
299 | Status = gBS->CreateEvent (\r | |
300 | EVT_NOTIFY_SIGNAL,\r | |
e48e37fc | 301 | TPL_NOTIFY,\r |
772db4bb | 302 | Ip4OnFrameReceived,\r |
303 | Token,\r | |
304 | &MnpToken->Event\r | |
305 | );\r | |
306 | \r | |
307 | if (EFI_ERROR (Status)) {\r | |
e48e37fc | 308 | gBS->FreePool (Token);\r |
772db4bb | 309 | return NULL;\r |
310 | }\r | |
311 | \r | |
312 | MnpToken->Packet.RxData = NULL;\r | |
313 | return Token;\r | |
314 | }\r | |
315 | \r | |
316 | \r | |
317 | /**\r | |
318 | Free the link layer request token. It will close the event\r | |
319 | then free the memory used.\r | |
320 | \r | |
321 | @param Token Request token to free\r | |
322 | \r | |
323 | @return NONE\r | |
324 | \r | |
325 | **/\r | |
772db4bb | 326 | VOID\r |
327 | Ip4FreeFrameRxToken (\r | |
328 | IN IP4_LINK_RX_TOKEN *Token\r | |
329 | )\r | |
330 | {\r | |
331 | \r | |
332 | NET_CHECK_SIGNATURE (Token, IP4_FRAME_RX_SIGNATURE);\r | |
333 | \r | |
334 | gBS->CloseEvent (Token->MnpToken.Event);\r | |
e48e37fc | 335 | gBS->FreePool (Token);\r |
772db4bb | 336 | }\r |
337 | \r | |
338 | \r | |
339 | /**\r | |
340 | Remove all the frames on the ARP queue that pass the FrameToCancel,\r | |
341 | that is, either FrameToCancel is NULL or it returns true for the frame.\r | |
342 | \r | |
343 | @param ArpQue ARP frame to remove the frames from.\r | |
344 | @param IoStatus The status returned to the cancelled frames'\r | |
345 | callback function.\r | |
346 | @param FrameToCancel Function to select which frame to cancel.\r | |
347 | @param Context Opaque parameter to the FrameToCancel.\r | |
348 | \r | |
349 | @return NONE\r | |
350 | \r | |
351 | **/\r | |
772db4bb | 352 | VOID\r |
353 | Ip4CancelFrameArp (\r | |
354 | IN IP4_ARP_QUE *ArpQue,\r | |
355 | IN EFI_STATUS IoStatus,\r | |
356 | IN IP4_FRAME_TO_CANCEL FrameToCancel, OPTIONAL\r | |
357 | IN VOID *Context\r | |
358 | )\r | |
359 | {\r | |
e48e37fc | 360 | LIST_ENTRY *Entry;\r |
361 | LIST_ENTRY *Next;\r | |
772db4bb | 362 | IP4_LINK_TX_TOKEN *Token;\r |
363 | \r | |
364 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &ArpQue->Frames) {\r | |
365 | Token = NET_LIST_USER_STRUCT (Entry, IP4_LINK_TX_TOKEN, Link);\r | |
366 | \r | |
367 | if ((FrameToCancel == NULL) || FrameToCancel (Token, Context)) {\r | |
e48e37fc | 368 | RemoveEntryList (Entry);\r |
772db4bb | 369 | \r |
370 | Token->CallBack (Token->IpInstance, Token->Packet, IoStatus, 0, Token->Context);\r | |
371 | Ip4FreeLinkTxToken (Token);\r | |
372 | }\r | |
373 | }\r | |
374 | }\r | |
375 | \r | |
376 | \r | |
377 | /**\r | |
378 | Remove all the frames on the interface that pass the FrameToCancel,\r | |
379 | either queued on ARP queues or that have already been delivered to\r | |
380 | MNP and not yet recycled.\r | |
381 | \r | |
382 | @param Interface Interface to remove the frames from\r | |
383 | @param IoStatus The transmit status returned to the frames'\r | |
384 | callback\r | |
385 | @param FrameToCancel Function to select the frame to cancel, NULL to\r | |
386 | select all\r | |
387 | @param Context Opaque parameters passed to FrameToCancel\r | |
388 | \r | |
389 | @return NONE\r | |
390 | \r | |
391 | **/\r | |
392 | VOID\r | |
393 | Ip4CancelFrames (\r | |
394 | IN IP4_INTERFACE *Interface,\r | |
395 | IN EFI_STATUS IoStatus,\r | |
396 | IN IP4_FRAME_TO_CANCEL FrameToCancel, OPTIONAL\r | |
397 | IN VOID *Context\r | |
398 | )\r | |
399 | {\r | |
e48e37fc | 400 | LIST_ENTRY *Entry;\r |
401 | LIST_ENTRY *Next;\r | |
772db4bb | 402 | IP4_ARP_QUE *ArpQue;\r |
403 | IP4_LINK_TX_TOKEN *Token;\r | |
404 | \r | |
405 | //\r | |
406 | // Cancel all the pending frames on ARP requests\r | |
407 | //\r | |
408 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &Interface->ArpQues) {\r | |
409 | ArpQue = NET_LIST_USER_STRUCT (Entry, IP4_ARP_QUE, Link);\r | |
410 | \r | |
411 | Ip4CancelFrameArp (ArpQue, IoStatus, FrameToCancel, Context);\r | |
412 | \r | |
e48e37fc | 413 | if (IsListEmpty (&ArpQue->Frames)) {\r |
772db4bb | 414 | Interface->Arp->Cancel (Interface->Arp, &ArpQue->Ip, ArpQue->OnResolved);\r |
772db4bb | 415 | }\r |
416 | }\r | |
417 | \r | |
418 | //\r | |
419 | // Cancel all the frames that have been delivered to MNP\r | |
420 | // but not yet recycled.\r | |
421 | //\r | |
422 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &Interface->SentFrames) {\r | |
423 | Token = NET_LIST_USER_STRUCT (Entry, IP4_LINK_TX_TOKEN, Link);\r | |
424 | \r | |
425 | if ((FrameToCancel == NULL) || FrameToCancel (Token, Context)) {\r | |
772db4bb | 426 | Interface->Mnp->Cancel (Interface->Mnp, &Token->MnpToken);\r |
772db4bb | 427 | }\r |
428 | }\r | |
429 | }\r | |
430 | \r | |
431 | \r | |
432 | /**\r | |
433 | Create an IP4_INTERFACE. Delay the creation of ARP instance until\r | |
434 | the interface is configured.\r | |
435 | \r | |
436 | @param Mnp The shared MNP child of this IP4 service binding\r | |
437 | instance\r | |
438 | @param Controller The controller this IP4 service binding instance\r | |
439 | is installed. Most like the UNDI handle.\r | |
440 | @param ImageHandle This driver's image handle\r | |
441 | \r | |
442 | @return Point to the created IP4_INTERFACE, otherwise NULL.\r | |
443 | \r | |
444 | **/\r | |
445 | IP4_INTERFACE *\r | |
446 | Ip4CreateInterface (\r | |
447 | IN EFI_MANAGED_NETWORK_PROTOCOL *Mnp,\r | |
448 | IN EFI_HANDLE Controller,\r | |
449 | IN EFI_HANDLE ImageHandle\r | |
450 | )\r | |
451 | {\r | |
452 | IP4_INTERFACE *Interface;\r | |
453 | EFI_SIMPLE_NETWORK_MODE SnpMode;\r | |
454 | \r | |
e48e37fc | 455 | Interface = AllocatePool (sizeof (IP4_INTERFACE));\r |
772db4bb | 456 | \r |
457 | if ((Interface == NULL) || (Mnp == NULL)) {\r | |
458 | return NULL;\r | |
459 | }\r | |
460 | \r | |
461 | Interface->Signature = IP4_INTERFACE_SIGNATURE;\r | |
e48e37fc | 462 | InitializeListHead (&Interface->Link);\r |
772db4bb | 463 | Interface->RefCnt = 1;\r |
464 | \r | |
465 | Interface->Ip = IP4_ALLZERO_ADDRESS;\r | |
466 | Interface->SubnetMask = IP4_ALLZERO_ADDRESS;\r | |
467 | Interface->Configured = FALSE;\r | |
468 | \r | |
469 | Interface->Controller = Controller;\r | |
470 | Interface->Image = ImageHandle;\r | |
471 | Interface->Mnp = Mnp;\r | |
472 | Interface->Arp = NULL;\r | |
473 | Interface->ArpHandle = NULL;\r | |
474 | \r | |
e48e37fc | 475 | InitializeListHead (&Interface->ArpQues);\r |
476 | InitializeListHead (&Interface->SentFrames);\r | |
772db4bb | 477 | \r |
478 | Interface->RecvRequest = NULL;\r | |
479 | \r | |
480 | //\r | |
481 | // Get the interface's Mac address and broadcast mac address from SNP\r | |
482 | //\r | |
483 | if (EFI_ERROR (Mnp->GetModeData (Mnp, NULL, &SnpMode))) {\r | |
e48e37fc | 484 | gBS->FreePool (Interface);\r |
772db4bb | 485 | return NULL;\r |
486 | }\r | |
487 | \r | |
687a2e5f | 488 | CopyMem (&Interface->Mac, &SnpMode.CurrentAddress, sizeof (Interface->Mac));\r |
489 | CopyMem (&Interface->BroadcastMac, &SnpMode.BroadcastAddress, sizeof (Interface->BroadcastMac));\r | |
772db4bb | 490 | Interface->HwaddrLen = SnpMode.HwAddressSize;\r |
491 | \r | |
e48e37fc | 492 | InitializeListHead (&Interface->IpInstances);\r |
772db4bb | 493 | Interface->PromiscRecv = FALSE;\r |
494 | \r | |
495 | return Interface;\r | |
496 | }\r | |
497 | \r | |
498 | \r | |
499 | /**\r | |
500 | Set the interface's address, create and configure\r | |
501 | the ARP child if necessary.\r | |
502 | \r | |
503 | @param Interface The interface to set the address\r | |
504 | @param IpAddr The interface's IP address\r | |
505 | @param SubnetMask The interface's netmask\r | |
506 | \r | |
507 | @retval EFI_SUCCESS The interface is configured with Ip/netmask pair,\r | |
508 | and a ARP is created for it.\r | |
509 | @retval Others Failed to set the interface's address.\r | |
510 | \r | |
511 | **/\r | |
512 | EFI_STATUS\r | |
513 | Ip4SetAddress (\r | |
514 | IN IP4_INTERFACE *Interface,\r | |
515 | IN IP4_ADDR IpAddr,\r | |
516 | IN IP4_ADDR SubnetMask\r | |
517 | )\r | |
518 | {\r | |
519 | EFI_ARP_CONFIG_DATA ArpConfig;\r | |
520 | EFI_STATUS Status;\r | |
521 | INTN Type;\r | |
522 | INTN Len;\r | |
523 | IP4_ADDR Netmask;\r | |
524 | \r | |
525 | NET_CHECK_SIGNATURE (Interface, IP4_INTERFACE_SIGNATURE);\r | |
526 | \r | |
527 | ASSERT (!Interface->Configured);\r | |
528 | \r | |
529 | //\r | |
530 | // Set the ip/netmask, then compute the subnet broadcast\r | |
531 | // and network broadcast for easy access. When computing\r | |
532 | // nework broadcast, the subnet mask is most like longer\r | |
533 | // than the default netmask (not subneted) as defined in\r | |
534 | // RFC793. If that isn't the case, we are aggregating the\r | |
535 | // networks, use the subnet's mask instead.\r | |
536 | //\r | |
537 | Interface->Ip = IpAddr;\r | |
538 | Interface->SubnetMask = SubnetMask;\r | |
539 | Interface->SubnetBrdcast = (IpAddr | ~SubnetMask);\r | |
540 | \r | |
541 | Type = NetGetIpClass (IpAddr);\r | |
542 | Len = NetGetMaskLength (SubnetMask);\r | |
2a86ff1c | 543 | Netmask = gIp4AllMasks[MIN (Len, Type << 3)];\r |
772db4bb | 544 | Interface->NetBrdcast = (IpAddr | ~Netmask);\r |
545 | \r | |
546 | //\r | |
547 | // If the address is NOT all zero, create then configure an ARP child.\r | |
548 | // Pay attention: DHCP configures its station address as 0.0.0.0/0\r | |
549 | //\r | |
550 | Interface->Arp = NULL;\r | |
551 | Interface->ArpHandle = NULL;\r | |
552 | \r | |
553 | if (IpAddr != IP4_ALLZERO_ADDRESS) {\r | |
554 | Status = NetLibCreateServiceChild (\r | |
555 | Interface->Controller,\r | |
556 | Interface->Image,\r | |
557 | &gEfiArpServiceBindingProtocolGuid,\r | |
558 | &Interface->ArpHandle\r | |
559 | );\r | |
560 | \r | |
561 | if (EFI_ERROR (Status)) {\r | |
562 | return Status;;\r | |
563 | }\r | |
564 | \r | |
565 | Status = gBS->OpenProtocol (\r | |
566 | Interface->ArpHandle,\r | |
567 | &gEfiArpProtocolGuid,\r | |
568 | (VOID **) &Interface->Arp,\r | |
569 | Interface->Image,\r | |
570 | Interface->Controller,\r | |
571 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
572 | );\r | |
573 | \r | |
574 | if (EFI_ERROR (Status)) {\r | |
575 | goto ON_ERROR;\r | |
576 | }\r | |
577 | \r | |
578 | IpAddr = HTONL (IpAddr);\r | |
579 | ArpConfig.SwAddressType = IP4_ETHER_PROTO;\r | |
580 | ArpConfig.SwAddressLength = 4;\r | |
581 | ArpConfig.StationAddress = &IpAddr;\r | |
582 | ArpConfig.EntryTimeOut = 0;\r | |
583 | ArpConfig.RetryCount = 0;\r | |
584 | ArpConfig.RetryTimeOut = 0;\r | |
585 | \r | |
586 | Status = Interface->Arp->Configure (Interface->Arp, &ArpConfig);\r | |
587 | \r | |
588 | if (EFI_ERROR (Status)) {\r | |
589 | gBS->CloseProtocol (\r | |
590 | Interface->ArpHandle,\r | |
591 | &gEfiArpProtocolGuid,\r | |
592 | Interface->Image,\r | |
593 | Interface->Controller\r | |
594 | );\r | |
595 | \r | |
596 | goto ON_ERROR;\r | |
597 | }\r | |
598 | }\r | |
599 | \r | |
600 | Interface->Configured = TRUE;\r | |
601 | return EFI_SUCCESS;\r | |
602 | \r | |
603 | ON_ERROR:\r | |
604 | NetLibDestroyServiceChild (\r | |
605 | Interface->Controller,\r | |
606 | Interface->Image,\r | |
607 | &gEfiArpServiceBindingProtocolGuid,\r | |
608 | &Interface->ArpHandle\r | |
609 | );\r | |
610 | \r | |
611 | return Status;\r | |
612 | }\r | |
613 | \r | |
614 | \r | |
615 | /**\r | |
616 | Fileter function to cancel all the frame related to an IP instance.\r | |
617 | \r | |
618 | @param Frame The transmit request to test whether to cancel\r | |
619 | @param Context The context which is the Ip instance that issued\r | |
620 | the transmit.\r | |
621 | \r | |
622 | @retval TRUE The frame belongs to this instance and is to be\r | |
623 | removed\r | |
624 | @retval FALSE The frame doesn't belong to this instance.\r | |
625 | \r | |
626 | **/\r | |
772db4bb | 627 | BOOLEAN\r |
628 | Ip4CancelInstanceFrame (\r | |
629 | IN IP4_LINK_TX_TOKEN *Frame,\r | |
630 | IN VOID *Context\r | |
631 | )\r | |
632 | {\r | |
633 | if (Frame->IpInstance == (IP4_PROTOCOL *) Context) {\r | |
634 | return TRUE;\r | |
635 | }\r | |
636 | \r | |
637 | return FALSE;\r | |
638 | }\r | |
639 | \r | |
640 | \r | |
641 | \r | |
642 | /**\r | |
643 | If there is a pending receive request, cancel it. Don't call\r | |
644 | the receive request's callback because this function can be only\r | |
645 | called if the instance or driver is tearing itself down. It\r | |
646 | doesn't make sense to call it back. But it is necessary to call\r | |
647 | the transmit token's callback to give it a chance to free the\r | |
648 | packet and update the upper layer's transmit request status, say\r | |
649 | that from the UDP.\r | |
650 | \r | |
651 | @param Interface The interface used by the IpInstance\r | |
652 | \r | |
653 | @return None\r | |
654 | \r | |
655 | **/\r | |
656 | VOID\r | |
657 | Ip4CancelReceive (\r | |
658 | IN IP4_INTERFACE *Interface\r | |
659 | )\r | |
660 | {\r | |
661 | EFI_TPL OldTpl;\r | |
662 | IP4_LINK_RX_TOKEN *Token;\r | |
663 | \r | |
664 | if ((Token = Interface->RecvRequest) != NULL) {\r | |
e48e37fc | 665 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
772db4bb | 666 | \r |
667 | Interface->RecvRequest = NULL;\r | |
668 | Interface->Mnp->Cancel (Interface->Mnp, &Token->MnpToken);\r | |
772db4bb | 669 | \r |
e48e37fc | 670 | gBS->RestoreTPL (OldTpl);\r |
772db4bb | 671 | }\r |
672 | }\r | |
673 | \r | |
674 | \r | |
675 | /**\r | |
676 | Free the interface used by IpInstance. All the IP instance with\r | |
677 | the same Ip/Netmask pair share the same interface. It is reference\r | |
678 | counted. All the frames haven't been sent will be cancelled.\r | |
679 | Because the IpInstance is optional, the caller must remove\r | |
680 | IpInstance from the interface's instance list itself.\r | |
681 | \r | |
682 | @param Interface The interface used by the IpInstance\r | |
683 | @param IpInstance The Ip instance that free the interface. NULL if\r | |
684 | the Ip driver is releasing the default interface.\r | |
685 | \r | |
686 | @retval EFI_SUCCESS The interface use IpInstance is freed.\r | |
687 | \r | |
688 | **/\r | |
689 | EFI_STATUS\r | |
690 | Ip4FreeInterface (\r | |
691 | IN IP4_INTERFACE *Interface,\r | |
692 | IN IP4_PROTOCOL *IpInstance OPTIONAL\r | |
693 | )\r | |
694 | {\r | |
695 | NET_CHECK_SIGNATURE (Interface, IP4_INTERFACE_SIGNATURE);\r | |
696 | ASSERT (Interface->RefCnt > 0);\r | |
697 | \r | |
698 | //\r | |
699 | // Remove all the pending transmit token related to this IP instance.\r | |
700 | //\r | |
701 | Ip4CancelFrames (Interface, EFI_ABORTED, Ip4CancelInstanceFrame, IpInstance);\r | |
702 | \r | |
703 | if (--Interface->RefCnt > 0) {\r | |
704 | return EFI_SUCCESS;\r | |
705 | }\r | |
706 | \r | |
707 | //\r | |
708 | // Destory the interface if this is the last IP instance that\r | |
709 | // has the address. Remove all the system transmitted packets\r | |
710 | // from this interface, cancel the receive request if there is\r | |
711 | // one, and destory the ARP requests.\r | |
712 | //\r | |
713 | Ip4CancelFrames (Interface, EFI_ABORTED, Ip4CancelInstanceFrame, NULL);\r | |
714 | Ip4CancelReceive (Interface);\r | |
715 | \r | |
e48e37fc | 716 | ASSERT (IsListEmpty (&Interface->IpInstances));\r |
717 | ASSERT (IsListEmpty (&Interface->ArpQues));\r | |
718 | ASSERT (IsListEmpty (&Interface->SentFrames));\r | |
772db4bb | 719 | \r |
720 | if (Interface->Arp != NULL) {\r | |
721 | gBS->CloseProtocol (\r | |
722 | Interface->ArpHandle,\r | |
723 | &gEfiArpProtocolGuid,\r | |
724 | Interface->Image,\r | |
725 | Interface->Controller\r | |
726 | );\r | |
727 | \r | |
728 | NetLibDestroyServiceChild (\r | |
729 | Interface->Controller,\r | |
730 | Interface->Image,\r | |
731 | &gEfiArpServiceBindingProtocolGuid,\r | |
732 | Interface->ArpHandle\r | |
733 | );\r | |
734 | }\r | |
735 | \r | |
e48e37fc | 736 | RemoveEntryList (&Interface->Link);\r |
737 | gBS->FreePool (Interface);\r | |
772db4bb | 738 | \r |
739 | return EFI_SUCCESS;\r | |
740 | }\r | |
741 | \r | |
742 | \r | |
743 | /**\r | |
744 | Callback function when ARP request are finished. It will cancelled\r | |
745 | all the queued frame if the ARP requests failed. Or transmit them\r | |
746 | if the request succeed.\r | |
747 | \r | |
772db4bb | 748 | @param Context The context of the callback, a point to the ARP\r |
749 | queue\r | |
750 | \r | |
751 | @return None\r | |
752 | \r | |
753 | **/\r | |
772db4bb | 754 | VOID\r |
755 | EFIAPI\r | |
36ee91ca | 756 | Ip4OnArpResolvedDpc (\r |
772db4bb | 757 | IN VOID *Context\r |
758 | )\r | |
759 | {\r | |
e48e37fc | 760 | LIST_ENTRY *Entry;\r |
761 | LIST_ENTRY *Next;\r | |
772db4bb | 762 | IP4_ARP_QUE *ArpQue;\r |
763 | IP4_INTERFACE *Interface;\r | |
764 | IP4_LINK_TX_TOKEN *Token;\r | |
765 | EFI_STATUS Status;\r | |
766 | \r | |
767 | ArpQue = (IP4_ARP_QUE *) Context;\r | |
768 | NET_CHECK_SIGNATURE (ArpQue, IP4_FRAME_ARP_SIGNATURE);\r | |
769 | \r | |
e48e37fc | 770 | RemoveEntryList (&ArpQue->Link);\r |
772db4bb | 771 | \r |
772 | //\r | |
773 | // ARP resolve failed for some reason. Release all the frame\r | |
774 | // and ARP queue itself. Ip4FreeArpQue will call the frame's\r | |
775 | // owner back.\r | |
776 | //\r | |
777 | if (NET_MAC_EQUAL (&ArpQue->Mac, &mZeroMacAddress, ArpQue->Interface->HwaddrLen)) {\r | |
778 | Ip4FreeArpQue (ArpQue, EFI_NO_MAPPING);\r | |
779 | \r | |
780 | return ;\r | |
781 | }\r | |
782 | \r | |
783 | //\r | |
784 | // ARP resolve succeeded, Transmit all the frame. Release the ARP\r | |
785 | // queue. It isn't necessary for us to cache the ARP binding because\r | |
786 | // we always check the ARP cache first before transmit.\r | |
787 | //\r | |
788 | Interface = ArpQue->Interface;\r | |
789 | \r | |
790 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &ArpQue->Frames) {\r | |
e48e37fc | 791 | RemoveEntryList (Entry);\r |
772db4bb | 792 | \r |
793 | Token = NET_LIST_USER_STRUCT (Entry, IP4_LINK_TX_TOKEN, Link);\r | |
687a2e5f | 794 | CopyMem (&Token->DstMac, &ArpQue->Mac, sizeof (Token->DstMac));\r |
772db4bb | 795 | \r |
36ee91ca | 796 | //\r |
797 | // Insert the tx token before transmitting it via MNP as the FrameSentDpc\r | |
798 | // may be called before Mnp->Transmit returns which will remove this tx\r | |
799 | // token from the SentFrames list. Remove it from the list if the returned\r | |
800 | // Status of Mnp->Transmit is not EFI_SUCCESS as in this case the\r | |
801 | // FrameSentDpc won't be queued.\r | |
802 | //\r | |
e48e37fc | 803 | InsertTailList (&Interface->SentFrames, &Token->Link);\r |
772db4bb | 804 | \r |
36ee91ca | 805 | Status = Interface->Mnp->Transmit (Interface->Mnp, &Token->MnpToken);\r |
772db4bb | 806 | if (EFI_ERROR (Status)) {\r |
e48e37fc | 807 | RemoveEntryList (Entry);\r |
772db4bb | 808 | Token->CallBack (Token->IpInstance, Token->Packet, Status, 0, Token->Context);\r |
809 | \r | |
810 | Ip4FreeLinkTxToken (Token);\r | |
811 | continue;\r | |
812 | }\r | |
772db4bb | 813 | }\r |
814 | \r | |
815 | Ip4FreeArpQue (ArpQue, EFI_SUCCESS);\r | |
816 | }\r | |
817 | \r | |
36ee91ca | 818 | VOID\r |
819 | EFIAPI\r | |
820 | Ip4OnArpResolved (\r | |
821 | IN EFI_EVENT Event,\r | |
822 | IN VOID *Context\r | |
823 | )\r | |
824 | /*++\r | |
825 | \r | |
826 | Routine Description:\r | |
827 | \r | |
828 | Request Ip4OnArpResolvedDpc as a DPC at TPL_CALLBACK\r | |
829 | \r | |
830 | Arguments:\r | |
831 | \r | |
832 | Event - The Arp request event\r | |
833 | Context - The context of the callback, a point to the ARP queue\r | |
834 | \r | |
835 | Returns:\r | |
836 | \r | |
837 | None\r | |
838 | \r | |
839 | --*/\r | |
840 | {\r | |
841 | //\r | |
842 | // Request Ip4OnArpResolvedDpc as a DPC at TPL_CALLBACK\r | |
843 | //\r | |
844 | NetLibQueueDpc (TPL_CALLBACK, Ip4OnArpResolvedDpc, Context);\r | |
845 | }\r | |
846 | \r | |
847 | \r | |
772db4bb | 848 | \r |
849 | /**\r | |
850 | Callback funtion when frame transmission is finished. It will\r | |
851 | call the frame owner's callback function to tell it the result.\r | |
852 | \r | |
772db4bb | 853 | @param Context Context which is point to the token.\r |
854 | \r | |
855 | @return None.\r | |
856 | \r | |
857 | **/\r | |
772db4bb | 858 | VOID\r |
859 | EFIAPI\r | |
36ee91ca | 860 | Ip4OnFrameSentDpc (\r |
772db4bb | 861 | IN VOID *Context\r |
862 | )\r | |
863 | {\r | |
864 | IP4_LINK_TX_TOKEN *Token;\r | |
865 | \r | |
866 | Token = (IP4_LINK_TX_TOKEN *) Context;\r | |
867 | NET_CHECK_SIGNATURE (Token, IP4_FRAME_TX_SIGNATURE);\r | |
868 | \r | |
e48e37fc | 869 | RemoveEntryList (&Token->Link);\r |
772db4bb | 870 | \r |
871 | Token->CallBack (\r | |
872 | Token->IpInstance,\r | |
873 | Token->Packet,\r | |
874 | Token->MnpToken.Status,\r | |
875 | 0,\r | |
876 | Token->Context\r | |
877 | );\r | |
878 | \r | |
879 | Ip4FreeLinkTxToken (Token);\r | |
880 | }\r | |
881 | \r | |
36ee91ca | 882 | VOID\r |
883 | EFIAPI\r | |
884 | Ip4OnFrameSent (\r | |
885 | IN EFI_EVENT Event,\r | |
886 | IN VOID *Context\r | |
887 | )\r | |
888 | /*++\r | |
889 | \r | |
890 | Routine Description:\r | |
891 | \r | |
892 | Request Ip4OnFrameSentDpc as a DPC at TPL_CALLBACK\r | |
893 | \r | |
894 | Arguments:\r | |
895 | \r | |
896 | Event - The transmit token's event\r | |
897 | Context - Context which is point to the token.\r | |
898 | \r | |
899 | Returns:\r | |
900 | \r | |
901 | None.\r | |
902 | \r | |
903 | --*/\r | |
904 | {\r | |
905 | //\r | |
906 | // Request Ip4OnFrameSentDpc as a DPC at TPL_CALLBACK\r | |
907 | //\r | |
908 | NetLibQueueDpc (TPL_CALLBACK, Ip4OnFrameSentDpc, Context);\r | |
909 | }\r | |
910 | \r | |
772db4bb | 911 | \r |
912 | \r | |
913 | /**\r | |
914 | Send a frame from the interface. If the next hop is broadcast or\r | |
915 | multicast address, it is transmitted immediately. If the next hop\r | |
916 | is a unicast, it will consult ARP to resolve the NextHop's MAC.\r | |
917 | If some error happened, the CallBack won't be called. So, the caller\r | |
918 | must test the return value, and take action when there is an error.\r | |
919 | \r | |
920 | @param Interface The interface to send the frame from\r | |
921 | @param IpInstance The IP child that request the transmission. NULL\r | |
922 | if it is the IP4 driver itself.\r | |
923 | @param Packet The packet to transmit.\r | |
924 | @param NextHop The immediate destination to transmit the packet\r | |
925 | to.\r | |
926 | @param CallBack Function to call back when transmit finished.\r | |
927 | @param Context Opaque parameter to the call back.\r | |
928 | \r | |
929 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to send the frame\r | |
930 | @retval EFI_NO_MAPPING Can't resolve the MAC for the nexthop\r | |
931 | @retval EFI_SUCCESS The packet is successfully transmitted.\r | |
932 | \r | |
933 | **/\r | |
934 | EFI_STATUS\r | |
935 | Ip4SendFrame (\r | |
936 | IN IP4_INTERFACE *Interface,\r | |
937 | IN IP4_PROTOCOL *IpInstance, OPTIONAL\r | |
938 | IN NET_BUF *Packet,\r | |
939 | IN IP4_ADDR NextHop,\r | |
940 | IN IP4_FRAME_CALLBACK CallBack,\r | |
941 | IN VOID *Context\r | |
942 | )\r | |
943 | {\r | |
944 | IP4_LINK_TX_TOKEN *Token;\r | |
e48e37fc | 945 | LIST_ENTRY *Entry;\r |
772db4bb | 946 | IP4_ARP_QUE *ArpQue;\r |
947 | EFI_ARP_PROTOCOL *Arp;\r | |
948 | EFI_STATUS Status;\r | |
949 | \r | |
950 | ASSERT (Interface->Configured);\r | |
951 | \r | |
952 | Token = Ip4WrapLinkTxToken (Interface, IpInstance, Packet, CallBack, Context);\r | |
953 | \r | |
954 | if (Token == NULL) {\r | |
955 | return EFI_OUT_OF_RESOURCES;\r | |
956 | }\r | |
957 | \r | |
958 | //\r | |
959 | // Get the destination MAC address for multicast and broadcasts.\r | |
960 | // Don't depend on ARP to solve the address since there maybe no\r | |
961 | // ARP at all. Ip4Output has set NextHop to 255.255.255.255 for\r | |
962 | // all the broadcasts.\r | |
963 | //\r | |
964 | if (NextHop == IP4_ALLONE_ADDRESS) {\r | |
687a2e5f | 965 | CopyMem (&Token->DstMac, &Interface->BroadcastMac, sizeof (Token->DstMac));\r |
772db4bb | 966 | goto SEND_NOW;\r |
967 | \r | |
968 | } else if (IP4_IS_MULTICAST (NextHop)) {\r | |
969 | \r | |
970 | Status = Ip4GetMulticastMac (Interface->Mnp, NextHop, &Token->DstMac);\r | |
971 | \r | |
972 | if (EFI_ERROR (Status)) {\r | |
973 | goto ON_ERROR;\r | |
974 | }\r | |
975 | \r | |
976 | goto SEND_NOW;\r | |
977 | }\r | |
978 | \r | |
979 | //\r | |
980 | // Can only send out multicast/broadcast if the IP address is zero\r | |
981 | //\r | |
982 | if ((Arp = Interface->Arp) == NULL) {\r | |
983 | Status = EFI_NO_MAPPING;\r | |
984 | goto ON_ERROR;\r | |
985 | }\r | |
986 | \r | |
987 | //\r | |
988 | // First check whether this binding is in the ARP cache.\r | |
989 | //\r | |
990 | NextHop = HTONL (NextHop);\r | |
991 | Status = Arp->Request (Arp, &NextHop, NULL, &Token->DstMac);\r | |
992 | \r | |
993 | if (Status == EFI_SUCCESS) {\r | |
994 | goto SEND_NOW;\r | |
995 | \r | |
996 | } else if (Status != EFI_NOT_READY) {\r | |
997 | goto ON_ERROR;\r | |
998 | }\r | |
999 | \r | |
1000 | //\r | |
1001 | // Have to do asynchronous ARP resolution. First check\r | |
1002 | // whether there is already a pending request.\r | |
1003 | //\r | |
1004 | ArpQue = NULL;\r | |
1005 | \r | |
1006 | NET_LIST_FOR_EACH (Entry, &Interface->ArpQues) {\r | |
1007 | ArpQue = NET_LIST_USER_STRUCT (Entry, IP4_ARP_QUE, Link);\r | |
1008 | \r | |
1009 | if (ArpQue->Ip == NextHop) {\r | |
1010 | break;\r | |
1011 | }\r | |
1012 | }\r | |
1013 | \r | |
1014 | //\r | |
1015 | // Found a pending ARP request, enqueue the frame then return\r | |
1016 | //\r | |
1017 | if (Entry != &Interface->ArpQues) {\r | |
e48e37fc | 1018 | InsertTailList (&ArpQue->Frames, &Token->Link);\r |
772db4bb | 1019 | return EFI_SUCCESS;\r |
1020 | }\r | |
1021 | \r | |
1022 | //\r | |
1023 | // First frame to NextHop, issue an asynchronous ARP requests\r | |
1024 | //\r | |
1025 | ArpQue = Ip4CreateArpQue (Interface, NextHop);\r | |
1026 | \r | |
1027 | if (ArpQue == NULL) {\r | |
1028 | Status = EFI_OUT_OF_RESOURCES;\r | |
1029 | goto ON_ERROR;\r | |
1030 | }\r | |
1031 | \r | |
1032 | Status = Arp->Request (Arp, &ArpQue->Ip, ArpQue->OnResolved, ArpQue->Mac.Addr);\r | |
1033 | \r | |
1034 | if (EFI_ERROR (Status) && (Status != EFI_NOT_READY)) {\r | |
1035 | Ip4FreeArpQue (ArpQue, EFI_NO_MAPPING);\r | |
1036 | goto ON_ERROR;\r | |
1037 | }\r | |
1038 | \r | |
e48e37fc | 1039 | InsertHeadList (&ArpQue->Frames, &Token->Link);\r |
1040 | InsertHeadList (&Interface->ArpQues, &ArpQue->Link);\r | |
772db4bb | 1041 | return EFI_SUCCESS;\r |
1042 | \r | |
1043 | SEND_NOW:\r | |
36ee91ca | 1044 | //\r |
1045 | // Insert the tx token into the SentFrames list before calling Mnp->Transmit.\r | |
1046 | // Remove it if the returned status is not EFI_SUCCESS.\r | |
1047 | //\r | |
e48e37fc | 1048 | InsertTailList (&Interface->SentFrames, &Token->Link);\r |
772db4bb | 1049 | Status = Interface->Mnp->Transmit (Interface->Mnp, &Token->MnpToken);\r |
772db4bb | 1050 | if (EFI_ERROR (Status)) {\r |
e48e37fc | 1051 | RemoveEntryList (&Interface->SentFrames);\r |
772db4bb | 1052 | goto ON_ERROR;\r |
1053 | }\r | |
1054 | \r | |
772db4bb | 1055 | return EFI_SUCCESS;\r |
1056 | \r | |
1057 | ON_ERROR:\r | |
1058 | Ip4FreeLinkTxToken (Token);\r | |
1059 | return Status;\r | |
1060 | }\r | |
1061 | \r | |
1062 | \r | |
1063 | /**\r | |
1064 | Call back function when the received packet is freed.\r | |
1065 | Check Ip4OnFrameReceived for information.\r | |
1066 | \r | |
1067 | @param Context Context, which is the IP4_LINK_RX_TOKEN.\r | |
1068 | \r | |
1069 | @return None.\r | |
1070 | \r | |
1071 | **/\r | |
772db4bb | 1072 | VOID\r |
1073 | Ip4RecycleFrame (\r | |
1074 | IN VOID *Context\r | |
1075 | )\r | |
1076 | {\r | |
1077 | IP4_LINK_RX_TOKEN *Frame;\r | |
1078 | \r | |
1079 | Frame = (IP4_LINK_RX_TOKEN *) Context;\r | |
1080 | NET_CHECK_SIGNATURE (Frame, IP4_FRAME_RX_SIGNATURE);\r | |
1081 | \r | |
1082 | gBS->SignalEvent (Frame->MnpToken.Packet.RxData->RecycleEvent);\r | |
1083 | Ip4FreeFrameRxToken (Frame);\r | |
1084 | }\r | |
1085 | \r | |
1086 | \r | |
1087 | /**\r | |
1088 | Received a frame from MNP, wrap it in net buffer then deliver\r | |
1089 | it to IP's input function. The ownship of the packet also\r | |
1090 | transferred to IP. When Ip is finished with this packet, it\r | |
1091 | will call NetbufFree to release the packet, NetbufFree will\r | |
1092 | again call the Ip4RecycleFrame to signal MNP's event and free\r | |
1093 | the token used.\r | |
1094 | \r | |
772db4bb | 1095 | @param Context Context for the callback.\r |
1096 | \r | |
1097 | @return None.\r | |
1098 | \r | |
1099 | **/\r | |
772db4bb | 1100 | VOID\r |
1101 | EFIAPI\r | |
36ee91ca | 1102 | Ip4OnFrameReceivedDpc (\r |
772db4bb | 1103 | IN VOID *Context\r |
1104 | )\r | |
1105 | {\r | |
1106 | EFI_MANAGED_NETWORK_COMPLETION_TOKEN *MnpToken;\r | |
1107 | EFI_MANAGED_NETWORK_RECEIVE_DATA *MnpRxData;\r | |
1108 | IP4_LINK_RX_TOKEN *Token;\r | |
1109 | NET_FRAGMENT Netfrag;\r | |
1110 | NET_BUF *Packet;\r | |
1111 | UINT32 Flag;\r | |
1112 | \r | |
1113 | Token = (IP4_LINK_RX_TOKEN *) Context;\r | |
1114 | NET_CHECK_SIGNATURE (Token, IP4_FRAME_RX_SIGNATURE);\r | |
1115 | \r | |
1116 | //\r | |
1117 | // First clear the interface's receive request in case the\r | |
1118 | // caller wants to call Ip4ReceiveFrame in the callback.\r | |
1119 | //\r | |
1120 | Token->Interface->RecvRequest = NULL;\r | |
1121 | \r | |
1122 | MnpToken = &Token->MnpToken;\r | |
1123 | MnpRxData = MnpToken->Packet.RxData;\r | |
1124 | \r | |
1125 | if (EFI_ERROR (MnpToken->Status) || (MnpRxData == NULL)) {\r | |
1126 | Token->CallBack (Token->IpInstance, NULL, MnpToken->Status, 0, Token->Context);\r | |
1127 | Ip4FreeFrameRxToken (Token);\r | |
1128 | \r | |
1129 | return ;\r | |
1130 | }\r | |
1131 | \r | |
1132 | //\r | |
1133 | // Wrap the frame in a net buffer then deliever it to IP input.\r | |
1134 | // IP will reassemble the packet, and deliver it to upper layer\r | |
1135 | //\r | |
1136 | Netfrag.Len = MnpRxData->DataLength;\r | |
1137 | Netfrag.Bulk = MnpRxData->PacketData;\r | |
1138 | \r | |
1139 | Packet = NetbufFromExt (&Netfrag, 1, 0, IP4_MAX_HEADLEN, Ip4RecycleFrame, Token);\r | |
1140 | \r | |
1141 | if (Packet == NULL) {\r | |
1142 | gBS->SignalEvent (MnpRxData->RecycleEvent);\r | |
1143 | \r | |
1144 | Token->CallBack (Token->IpInstance, NULL, EFI_OUT_OF_RESOURCES, 0, Token->Context);\r | |
1145 | Ip4FreeFrameRxToken (Token);\r | |
1146 | \r | |
1147 | return ;\r | |
1148 | }\r | |
1149 | \r | |
1150 | Flag = (MnpRxData->BroadcastFlag ? IP4_LINK_BROADCAST : 0);\r | |
1151 | Flag |= (MnpRxData->MulticastFlag ? IP4_LINK_MULTICAST : 0);\r | |
1152 | Flag |= (MnpRxData->PromiscuousFlag ? IP4_LINK_PROMISC : 0);\r | |
1153 | \r | |
1154 | Token->CallBack (Token->IpInstance, Packet, EFI_SUCCESS, Flag, Token->Context);\r | |
1155 | }\r | |
1156 | \r | |
36ee91ca | 1157 | VOID\r |
1158 | EFIAPI\r | |
1159 | Ip4OnFrameReceived (\r | |
1160 | IN EFI_EVENT Event,\r | |
1161 | IN VOID *Context\r | |
1162 | )\r | |
1163 | /*++\r | |
1164 | \r | |
1165 | Routine Description:\r | |
1166 | \r | |
1167 | Request Ip4OnFrameReceivedDpc as a DPC at TPL_CALLBACK\r | |
1168 | \r | |
1169 | Arguments:\r | |
1170 | \r | |
1171 | Event - The receive event delivered to MNP for receive.\r | |
1172 | Context - Context for the callback.\r | |
1173 | \r | |
1174 | Returns:\r | |
1175 | \r | |
1176 | None.\r | |
1177 | \r | |
1178 | --*/\r | |
1179 | {\r | |
1180 | //\r | |
1181 | // Request Ip4OnFrameReceivedDpc as a DPC at TPL_CALLBACK\r | |
1182 | //\r | |
1183 | NetLibQueueDpc (TPL_CALLBACK, Ip4OnFrameReceivedDpc, Context);\r | |
1184 | }\r | |
1185 | \r | |
772db4bb | 1186 | \r |
1187 | /**\r | |
1188 | Request to receive the packet from the interface.\r | |
1189 | \r | |
1190 | @param Interface The interface to receive the frames from\r | |
1191 | @param IpInstance The instance that requests the receive. NULL for\r | |
1192 | the driver itself.\r | |
1193 | @param CallBack Function to call when receive finished.\r | |
1194 | @param Context Opaque parameter to the callback\r | |
1195 | \r | |
1196 | @retval EFI_ALREADY_STARTED There is already a pending receive request.\r | |
1197 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to receive\r | |
1198 | @retval EFI_SUCCESS The recieve request has been started.\r | |
1199 | \r | |
1200 | **/\r | |
1201 | EFI_STATUS\r | |
1202 | Ip4ReceiveFrame (\r | |
1203 | IN IP4_INTERFACE *Interface,\r | |
1204 | IN IP4_PROTOCOL *IpInstance, OPTIONAL\r | |
1205 | IN IP4_FRAME_CALLBACK CallBack,\r | |
1206 | IN VOID *Context\r | |
1207 | )\r | |
1208 | {\r | |
1209 | IP4_LINK_RX_TOKEN *Token;\r | |
1210 | EFI_STATUS Status;\r | |
1211 | \r | |
1212 | NET_CHECK_SIGNATURE (Interface, IP4_INTERFACE_SIGNATURE);\r | |
1213 | \r | |
1214 | if (Interface->RecvRequest != NULL) {\r | |
1215 | return EFI_ALREADY_STARTED;\r | |
1216 | }\r | |
1217 | \r | |
1218 | Token = Ip4CreateLinkRxToken (Interface, IpInstance, CallBack, Context);\r | |
1219 | \r | |
1220 | if (Token == NULL) {\r | |
1221 | return EFI_OUT_OF_RESOURCES;\r | |
1222 | }\r | |
1223 | \r | |
36ee91ca | 1224 | Interface->RecvRequest = Token;\r |
772db4bb | 1225 | Status = Interface->Mnp->Receive (Interface->Mnp, &Token->MnpToken);\r |
772db4bb | 1226 | if (EFI_ERROR (Status)) {\r |
36ee91ca | 1227 | Interface->RecvRequest = NULL;\r |
772db4bb | 1228 | Ip4FreeFrameRxToken (Token);\r |
1229 | return Status;\r | |
1230 | }\r | |
772db4bb | 1231 | return EFI_SUCCESS;\r |
1232 | }\r |