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772db4bb | 1 | /** @file\r |
3e8c18da | 2 | Implement IP4 pesudo interface.\r |
d1102dba LG |
3 | \r |
4 | Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>\r | |
9d510e61 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
772db4bb | 6 | \r |
772db4bb | 7 | **/\r |
8 | \r | |
9 | #include "Ip4Impl.h"\r | |
10 | \r | |
11 | //\r | |
12 | // Mac address with all zero, used to determine whethter the ARP\r | |
13 | // resolve succeeded. Failed ARP requests zero the MAC address buffer.\r | |
14 | //\r | |
fe1e36e5 | 15 | EFI_MAC_ADDRESS mZeroMacAddress;\r |
772db4bb | 16 | \r |
2ff29212 | 17 | /**\r |
18 | Callback funtion when frame transmission is finished. It will\r | |
19 | call the frame owner's callback function to tell it the result.\r | |
20 | \r | |
3e8c18da | 21 | @param[in] Context Context which is point to the token.\r |
2ff29212 | 22 | \r |
23 | **/\r | |
36ee91ca | 24 | VOID\r |
25 | EFIAPI\r | |
26 | Ip4OnFrameSentDpc (\r | |
2ff29212 | 27 | IN VOID *Context\r |
36ee91ca | 28 | );\r |
29 | \r | |
2ff29212 | 30 | /**\r |
31 | Request Ip4OnFrameSentDpc as a DPC at TPL_CALLBACK.\r | |
32 | \r | |
3e8c18da | 33 | @param[in] Event The transmit token's event.\r |
34 | @param[in] Context Context which is point to the token.\r | |
2ff29212 | 35 | \r |
36 | **/\r | |
772db4bb | 37 | VOID\r |
38 | EFIAPI\r | |
39 | Ip4OnFrameSent (\r | |
2ff29212 | 40 | IN EFI_EVENT Event,\r |
41 | IN VOID *Context\r | |
772db4bb | 42 | );\r |
43 | \r | |
2ff29212 | 44 | /**\r |
45 | Callback function when ARP request are finished. It will cancelled\r | |
46 | all the queued frame if the ARP requests failed. Or transmit them\r | |
47 | if the request succeed.\r | |
48 | \r | |
3e8c18da | 49 | @param[in] Context The context of the callback, a point to the ARP\r |
2ff29212 | 50 | queue\r |
51 | \r | |
2ff29212 | 52 | **/\r |
36ee91ca | 53 | VOID\r |
54 | EFIAPI\r | |
55 | Ip4OnArpResolvedDpc (\r | |
56 | IN VOID *Context\r | |
57 | );\r | |
58 | \r | |
2ff29212 | 59 | /**\r |
60 | Request Ip4OnArpResolvedDpc as a DPC at TPL_CALLBACK.\r | |
61 | \r | |
3e8c18da | 62 | @param Event The Arp request event.\r |
63 | @param Context The context of the callback, a point to the ARP\r | |
64 | queue.\r | |
d1102dba | 65 | \r |
2ff29212 | 66 | **/\r |
772db4bb | 67 | VOID\r |
68 | EFIAPI\r | |
69 | Ip4OnArpResolved (\r | |
70 | IN EFI_EVENT Event,\r | |
71 | IN VOID *Context\r | |
72 | );\r | |
73 | \r | |
2ff29212 | 74 | /**\r |
75 | Received a frame from MNP, wrap it in net buffer then deliver\r | |
76 | it to IP's input function. The ownship of the packet also\r | |
77 | transferred to IP. When Ip is finished with this packet, it\r | |
78 | will call NetbufFree to release the packet, NetbufFree will\r | |
79 | again call the Ip4RecycleFrame to signal MNP's event and free\r | |
80 | the token used.\r | |
81 | \r | |
82 | @param Context Context for the callback.\r | |
83 | \r | |
2ff29212 | 84 | **/\r |
36ee91ca | 85 | VOID\r |
86 | EFIAPI\r | |
87 | Ip4OnFrameReceivedDpc (\r | |
2ff29212 | 88 | IN VOID *Context\r |
36ee91ca | 89 | );\r |
90 | \r | |
2ff29212 | 91 | /**\r |
2ff29212 | 92 | Request Ip4OnFrameReceivedDpc as a DPC at TPL_CALLBACK.\r |
93 | \r | |
94 | @param Event The receive event delivered to MNP for receive.\r | |
95 | @param Context Context for the callback.\r | |
2ff29212 | 96 | \r |
97 | **/\r | |
772db4bb | 98 | VOID\r |
99 | EFIAPI\r | |
100 | Ip4OnFrameReceived (\r | |
2ff29212 | 101 | IN EFI_EVENT Event,\r |
102 | IN VOID *Context\r | |
772db4bb | 103 | );\r |
104 | \r | |
2ff29212 | 105 | /**\r |
106 | Remove all the frames on the ARP queue that pass the FrameToCancel,\r | |
107 | that is, either FrameToCancel is NULL or it returns true for the frame.\r | |
108 | \r | |
3e8c18da | 109 | @param[in] ArpQue ARP frame to remove the frames from.\r |
110 | @param[in] IoStatus The status returned to the cancelled frames'\r | |
2ff29212 | 111 | callback function.\r |
3e8c18da | 112 | @param[in] FrameToCancel Function to select which frame to cancel.\r |
113 | @param[in] Context Opaque parameter to the FrameToCancel.\r | |
2ff29212 | 114 | \r |
115 | **/\r | |
772db4bb | 116 | VOID\r |
117 | Ip4CancelFrameArp (\r | |
118 | IN IP4_ARP_QUE *ArpQue,\r | |
119 | IN EFI_STATUS IoStatus,\r | |
24af132f | 120 | IN IP4_FRAME_TO_CANCEL FrameToCancel OPTIONAL,\r |
772db4bb | 121 | IN VOID *Context\r |
122 | );\r | |
123 | \r | |
124 | \r | |
125 | /**\r | |
126 | Wrap a transmit request into a newly allocated IP4_LINK_TX_TOKEN.\r | |
127 | \r | |
3e8c18da | 128 | @param[in] Interface The interface to send out to.\r |
129 | @param[in] IpInstance The IpInstance that transmit the packet. NULL if\r | |
772db4bb | 130 | the packet is sent by the IP4 driver itself.\r |
3e8c18da | 131 | @param[in] Packet The packet to transmit\r |
132 | @param[in] CallBack Call back function to execute if transmission\r | |
772db4bb | 133 | finished.\r |
3e8c18da | 134 | @param[in] Context Opaque parameter to the call back.\r |
12ae56cf | 135 | @param[in] IpSb The pointer to the IP4 service binding instance.\r |
772db4bb | 136 | \r |
d1102dba | 137 | @retval Token The wrapped token if succeed\r |
3e8c18da | 138 | @retval NULL The wrapped token if NULL\r |
772db4bb | 139 | \r |
140 | **/\r | |
772db4bb | 141 | IP4_LINK_TX_TOKEN *\r |
142 | Ip4WrapLinkTxToken (\r | |
143 | IN IP4_INTERFACE *Interface,\r | |
24af132f | 144 | IN IP4_PROTOCOL *IpInstance OPTIONAL,\r |
772db4bb | 145 | IN NET_BUF *Packet,\r |
146 | IN IP4_FRAME_CALLBACK CallBack,\r | |
12ae56cf FS |
147 | IN VOID *Context,\r |
148 | IN IP4_SERVICE *IpSb\r | |
772db4bb | 149 | )\r |
150 | {\r | |
151 | EFI_MANAGED_NETWORK_COMPLETION_TOKEN *MnpToken;\r | |
152 | EFI_MANAGED_NETWORK_TRANSMIT_DATA *MnpTxData;\r | |
153 | IP4_LINK_TX_TOKEN *Token;\r | |
154 | EFI_STATUS Status;\r | |
155 | UINT32 Count;\r | |
156 | \r | |
e48e37fc | 157 | Token = AllocatePool (sizeof (IP4_LINK_TX_TOKEN) + \\r |
772db4bb | 158 | (Packet->BlockOpNum - 1) * sizeof (EFI_MANAGED_NETWORK_FRAGMENT_DATA));\r |
159 | \r | |
160 | if (Token == NULL) {\r | |
161 | return NULL;\r | |
162 | }\r | |
163 | \r | |
164 | Token->Signature = IP4_FRAME_TX_SIGNATURE;\r | |
e48e37fc | 165 | InitializeListHead (&Token->Link);\r |
772db4bb | 166 | \r |
167 | Token->Interface = Interface;\r | |
168 | Token->IpInstance = IpInstance;\r | |
12ae56cf | 169 | Token->IpSb = IpSb;\r |
772db4bb | 170 | Token->CallBack = CallBack;\r |
171 | Token->Packet = Packet;\r | |
172 | Token->Context = Context;\r | |
687a2e5f | 173 | CopyMem (&Token->DstMac, &mZeroMacAddress, sizeof (Token->DstMac));\r |
174 | CopyMem (&Token->SrcMac, &Interface->Mac, sizeof (Token->SrcMac));\r | |
772db4bb | 175 | \r |
176 | MnpToken = &(Token->MnpToken);\r | |
177 | MnpToken->Status = EFI_NOT_READY;\r | |
178 | \r | |
179 | Status = gBS->CreateEvent (\r | |
180 | EVT_NOTIFY_SIGNAL,\r | |
e48e37fc | 181 | TPL_NOTIFY,\r |
772db4bb | 182 | Ip4OnFrameSent,\r |
183 | Token,\r | |
184 | &MnpToken->Event\r | |
185 | );\r | |
186 | \r | |
187 | if (EFI_ERROR (Status)) {\r | |
766c7483 | 188 | FreePool (Token);\r |
772db4bb | 189 | return NULL;\r |
190 | }\r | |
191 | \r | |
192 | MnpTxData = &Token->MnpTxData;\r | |
193 | MnpToken->Packet.TxData = MnpTxData;\r | |
194 | \r | |
195 | MnpTxData->DestinationAddress = &Token->DstMac;\r | |
196 | MnpTxData->SourceAddress = &Token->SrcMac;\r | |
197 | MnpTxData->ProtocolType = IP4_ETHER_PROTO;\r | |
198 | MnpTxData->DataLength = Packet->TotalSize;\r | |
199 | MnpTxData->HeaderLength = 0;\r | |
200 | \r | |
201 | Count = Packet->BlockOpNum;\r | |
202 | \r | |
203 | NetbufBuildExt (Packet, (NET_FRAGMENT *) MnpTxData->FragmentTable, &Count);\r | |
204 | MnpTxData->FragmentCount = (UINT16)Count;\r | |
205 | \r | |
206 | return Token;\r | |
207 | }\r | |
208 | \r | |
209 | \r | |
210 | /**\r | |
211 | Free the link layer transmit token. It will close the event\r | |
212 | then free the memory used.\r | |
213 | \r | |
3e8c18da | 214 | @param[in] Token Token to free\r |
772db4bb | 215 | \r |
216 | **/\r | |
772db4bb | 217 | VOID\r |
218 | Ip4FreeLinkTxToken (\r | |
219 | IN IP4_LINK_TX_TOKEN *Token\r | |
220 | )\r | |
221 | {\r | |
222 | NET_CHECK_SIGNATURE (Token, IP4_FRAME_TX_SIGNATURE);\r | |
223 | \r | |
224 | gBS->CloseEvent (Token->MnpToken.Event);\r | |
766c7483 | 225 | FreePool (Token);\r |
772db4bb | 226 | }\r |
227 | \r | |
228 | \r | |
229 | /**\r | |
230 | Create an IP_ARP_QUE structure to request ARP service.\r | |
231 | \r | |
3e8c18da | 232 | @param[in] Interface The interface to send ARP from.\r |
233 | @param[in] DestIp The destination IP (host byte order) to request MAC\r | |
772db4bb | 234 | for\r |
235 | \r | |
236 | @return Point to newly created IP4_ARP_QUE if succeed, otherwise NULL.\r | |
237 | \r | |
238 | **/\r | |
772db4bb | 239 | IP4_ARP_QUE *\r |
240 | Ip4CreateArpQue (\r | |
241 | IN IP4_INTERFACE *Interface,\r | |
242 | IN IP4_ADDR DestIp\r | |
243 | )\r | |
244 | {\r | |
245 | IP4_ARP_QUE *ArpQue;\r | |
246 | EFI_STATUS Status;\r | |
247 | \r | |
e48e37fc | 248 | ArpQue = AllocatePool (sizeof (IP4_ARP_QUE));\r |
772db4bb | 249 | \r |
250 | if (ArpQue == NULL) {\r | |
251 | return NULL;\r | |
252 | }\r | |
253 | \r | |
254 | ArpQue->Signature = IP4_FRAME_ARP_SIGNATURE;\r | |
e48e37fc | 255 | InitializeListHead (&ArpQue->Link);\r |
772db4bb | 256 | \r |
e48e37fc | 257 | InitializeListHead (&ArpQue->Frames);\r |
772db4bb | 258 | ArpQue->Interface = Interface;\r |
259 | \r | |
260 | Status = gBS->CreateEvent (\r | |
261 | EVT_NOTIFY_SIGNAL,\r | |
e48e37fc | 262 | TPL_NOTIFY,\r |
772db4bb | 263 | Ip4OnArpResolved,\r |
264 | ArpQue,\r | |
265 | &ArpQue->OnResolved\r | |
266 | );\r | |
267 | \r | |
268 | if (EFI_ERROR (Status)) {\r | |
766c7483 | 269 | FreePool (ArpQue);\r |
772db4bb | 270 | return NULL;\r |
271 | }\r | |
272 | \r | |
273 | ArpQue->Ip = DestIp;\r | |
687a2e5f | 274 | CopyMem (&ArpQue->Mac, &mZeroMacAddress, sizeof (ArpQue->Mac));\r |
772db4bb | 275 | \r |
276 | return ArpQue;\r | |
277 | }\r | |
278 | \r | |
279 | \r | |
280 | /**\r | |
281 | Remove all the transmit requests queued on the ARP queue, then free it.\r | |
282 | \r | |
3e8c18da | 283 | @param[in] ArpQue Arp queue to free\r |
284 | @param[in] IoStatus The transmit status returned to transmit requests'\r | |
772db4bb | 285 | callback.\r |
286 | \r | |
772db4bb | 287 | **/\r |
772db4bb | 288 | VOID\r |
289 | Ip4FreeArpQue (\r | |
290 | IN IP4_ARP_QUE *ArpQue,\r | |
291 | IN EFI_STATUS IoStatus\r | |
292 | )\r | |
293 | {\r | |
294 | NET_CHECK_SIGNATURE (ArpQue, IP4_FRAME_ARP_SIGNATURE);\r | |
295 | \r | |
296 | //\r | |
297 | // Remove all the frame waiting the ARP response\r | |
298 | //\r | |
299 | Ip4CancelFrameArp (ArpQue, IoStatus, NULL, NULL);\r | |
300 | \r | |
301 | gBS->CloseEvent (ArpQue->OnResolved);\r | |
766c7483 | 302 | FreePool (ArpQue);\r |
772db4bb | 303 | }\r |
304 | \r | |
305 | \r | |
306 | /**\r | |
307 | Create a link layer receive token to wrap the receive request\r | |
308 | \r | |
3e8c18da | 309 | @param[in] Interface The interface to receive from\r |
310 | @param[in] IpInstance The instance that request the receive (NULL for IP4\r | |
772db4bb | 311 | driver itself)\r |
3e8c18da | 312 | @param[in] CallBack Call back function to execute when finished.\r |
313 | @param[in] Context Opaque parameters to the callback\r | |
772db4bb | 314 | \r |
315 | @return Point to created IP4_LINK_RX_TOKEN if succeed, otherwise NULL.\r | |
316 | \r | |
317 | **/\r | |
772db4bb | 318 | IP4_LINK_RX_TOKEN *\r |
319 | Ip4CreateLinkRxToken (\r | |
320 | IN IP4_INTERFACE *Interface,\r | |
321 | IN IP4_PROTOCOL *IpInstance,\r | |
322 | IN IP4_FRAME_CALLBACK CallBack,\r | |
323 | IN VOID *Context\r | |
324 | )\r | |
325 | {\r | |
326 | EFI_MANAGED_NETWORK_COMPLETION_TOKEN *MnpToken;\r | |
327 | IP4_LINK_RX_TOKEN *Token;\r | |
328 | EFI_STATUS Status;\r | |
329 | \r | |
e48e37fc | 330 | Token = AllocatePool (sizeof (IP4_LINK_RX_TOKEN));\r |
772db4bb | 331 | if (Token == NULL) {\r |
332 | return NULL;\r | |
333 | }\r | |
334 | \r | |
335 | Token->Signature = IP4_FRAME_RX_SIGNATURE;\r | |
336 | Token->Interface = Interface;\r | |
337 | Token->IpInstance = IpInstance;\r | |
338 | Token->CallBack = CallBack;\r | |
339 | Token->Context = Context;\r | |
340 | \r | |
341 | MnpToken = &Token->MnpToken;\r | |
342 | MnpToken->Status = EFI_NOT_READY;\r | |
343 | \r | |
344 | Status = gBS->CreateEvent (\r | |
345 | EVT_NOTIFY_SIGNAL,\r | |
e48e37fc | 346 | TPL_NOTIFY,\r |
772db4bb | 347 | Ip4OnFrameReceived,\r |
348 | Token,\r | |
349 | &MnpToken->Event\r | |
350 | );\r | |
351 | \r | |
352 | if (EFI_ERROR (Status)) {\r | |
766c7483 | 353 | FreePool (Token);\r |
772db4bb | 354 | return NULL;\r |
355 | }\r | |
356 | \r | |
357 | MnpToken->Packet.RxData = NULL;\r | |
358 | return Token;\r | |
359 | }\r | |
360 | \r | |
361 | \r | |
362 | /**\r | |
363 | Free the link layer request token. It will close the event\r | |
364 | then free the memory used.\r | |
365 | \r | |
3e8c18da | 366 | @param[in] Token Request token to free.\r |
772db4bb | 367 | \r |
368 | **/\r | |
772db4bb | 369 | VOID\r |
370 | Ip4FreeFrameRxToken (\r | |
371 | IN IP4_LINK_RX_TOKEN *Token\r | |
372 | )\r | |
373 | {\r | |
374 | \r | |
375 | NET_CHECK_SIGNATURE (Token, IP4_FRAME_RX_SIGNATURE);\r | |
376 | \r | |
377 | gBS->CloseEvent (Token->MnpToken.Event);\r | |
766c7483 | 378 | FreePool (Token);\r |
772db4bb | 379 | }\r |
380 | \r | |
381 | \r | |
382 | /**\r | |
383 | Remove all the frames on the ARP queue that pass the FrameToCancel,\r | |
384 | that is, either FrameToCancel is NULL or it returns true for the frame.\r | |
385 | \r | |
3e8c18da | 386 | @param[in] ArpQue ARP frame to remove the frames from.\r |
387 | @param[in] IoStatus The status returned to the cancelled frames'\r | |
772db4bb | 388 | callback function.\r |
3e8c18da | 389 | @param[in] FrameToCancel Function to select which frame to cancel.\r |
390 | @param[in] Context Opaque parameter to the FrameToCancel.\r | |
772db4bb | 391 | \r |
392 | **/\r | |
772db4bb | 393 | VOID\r |
394 | Ip4CancelFrameArp (\r | |
395 | IN IP4_ARP_QUE *ArpQue,\r | |
396 | IN EFI_STATUS IoStatus,\r | |
24af132f | 397 | IN IP4_FRAME_TO_CANCEL FrameToCancel OPTIONAL,\r |
772db4bb | 398 | IN VOID *Context\r |
399 | )\r | |
400 | {\r | |
e48e37fc | 401 | LIST_ENTRY *Entry;\r |
402 | LIST_ENTRY *Next;\r | |
772db4bb | 403 | IP4_LINK_TX_TOKEN *Token;\r |
404 | \r | |
405 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &ArpQue->Frames) {\r | |
406 | Token = NET_LIST_USER_STRUCT (Entry, IP4_LINK_TX_TOKEN, Link);\r | |
407 | \r | |
408 | if ((FrameToCancel == NULL) || FrameToCancel (Token, Context)) {\r | |
e48e37fc | 409 | RemoveEntryList (Entry);\r |
772db4bb | 410 | \r |
411 | Token->CallBack (Token->IpInstance, Token->Packet, IoStatus, 0, Token->Context);\r | |
412 | Ip4FreeLinkTxToken (Token);\r | |
413 | }\r | |
414 | }\r | |
415 | }\r | |
416 | \r | |
417 | \r | |
418 | /**\r | |
419 | Remove all the frames on the interface that pass the FrameToCancel,\r | |
420 | either queued on ARP queues or that have already been delivered to\r | |
421 | MNP and not yet recycled.\r | |
422 | \r | |
1f6729ff | 423 | @param[in] Interface Interface to remove the frames from.\r |
3e8c18da | 424 | @param[in] IoStatus The transmit status returned to the frames'\r |
1f6729ff | 425 | callback.\r |
3e8c18da | 426 | @param[in] FrameToCancel Function to select the frame to cancel, NULL to\r |
1f6729ff | 427 | select all.\r |
428 | @param[in] Context Opaque parameters passed to FrameToCancel.\r | |
772db4bb | 429 | \r |
430 | **/\r | |
431 | VOID\r | |
432 | Ip4CancelFrames (\r | |
433 | IN IP4_INTERFACE *Interface,\r | |
434 | IN EFI_STATUS IoStatus,\r | |
24af132f | 435 | IN IP4_FRAME_TO_CANCEL FrameToCancel OPTIONAL,\r |
772db4bb | 436 | IN VOID *Context\r |
437 | )\r | |
438 | {\r | |
e48e37fc | 439 | LIST_ENTRY *Entry;\r |
440 | LIST_ENTRY *Next;\r | |
772db4bb | 441 | IP4_ARP_QUE *ArpQue;\r |
442 | IP4_LINK_TX_TOKEN *Token;\r | |
443 | \r | |
444 | //\r | |
445 | // Cancel all the pending frames on ARP requests\r | |
446 | //\r | |
447 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &Interface->ArpQues) {\r | |
448 | ArpQue = NET_LIST_USER_STRUCT (Entry, IP4_ARP_QUE, Link);\r | |
449 | \r | |
450 | Ip4CancelFrameArp (ArpQue, IoStatus, FrameToCancel, Context);\r | |
451 | \r | |
e48e37fc | 452 | if (IsListEmpty (&ArpQue->Frames)) {\r |
772db4bb | 453 | Interface->Arp->Cancel (Interface->Arp, &ArpQue->Ip, ArpQue->OnResolved);\r |
772db4bb | 454 | }\r |
455 | }\r | |
456 | \r | |
457 | //\r | |
458 | // Cancel all the frames that have been delivered to MNP\r | |
459 | // but not yet recycled.\r | |
460 | //\r | |
461 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &Interface->SentFrames) {\r | |
462 | Token = NET_LIST_USER_STRUCT (Entry, IP4_LINK_TX_TOKEN, Link);\r | |
463 | \r | |
464 | if ((FrameToCancel == NULL) || FrameToCancel (Token, Context)) {\r | |
772db4bb | 465 | Interface->Mnp->Cancel (Interface->Mnp, &Token->MnpToken);\r |
772db4bb | 466 | }\r |
467 | }\r | |
468 | }\r | |
469 | \r | |
470 | \r | |
471 | /**\r | |
472 | Create an IP4_INTERFACE. Delay the creation of ARP instance until\r | |
473 | the interface is configured.\r | |
474 | \r | |
3e8c18da | 475 | @param[in] Mnp The shared MNP child of this IP4 service binding\r |
1f6729ff | 476 | instance.\r |
3e8c18da | 477 | @param[in] Controller The controller this IP4 service binding instance\r |
772db4bb | 478 | is installed. Most like the UNDI handle.\r |
1f6729ff | 479 | @param[in] ImageHandle This driver's image handle.\r |
772db4bb | 480 | \r |
481 | @return Point to the created IP4_INTERFACE, otherwise NULL.\r | |
482 | \r | |
483 | **/\r | |
484 | IP4_INTERFACE *\r | |
485 | Ip4CreateInterface (\r | |
486 | IN EFI_MANAGED_NETWORK_PROTOCOL *Mnp,\r | |
487 | IN EFI_HANDLE Controller,\r | |
488 | IN EFI_HANDLE ImageHandle\r | |
489 | )\r | |
490 | {\r | |
491 | IP4_INTERFACE *Interface;\r | |
492 | EFI_SIMPLE_NETWORK_MODE SnpMode;\r | |
493 | \r | |
e48e37fc | 494 | Interface = AllocatePool (sizeof (IP4_INTERFACE));\r |
772db4bb | 495 | \r |
496 | if ((Interface == NULL) || (Mnp == NULL)) {\r | |
497 | return NULL;\r | |
498 | }\r | |
499 | \r | |
500 | Interface->Signature = IP4_INTERFACE_SIGNATURE;\r | |
e48e37fc | 501 | InitializeListHead (&Interface->Link);\r |
772db4bb | 502 | Interface->RefCnt = 1;\r |
503 | \r | |
504 | Interface->Ip = IP4_ALLZERO_ADDRESS;\r | |
505 | Interface->SubnetMask = IP4_ALLZERO_ADDRESS;\r | |
506 | Interface->Configured = FALSE;\r | |
507 | \r | |
508 | Interface->Controller = Controller;\r | |
509 | Interface->Image = ImageHandle;\r | |
510 | Interface->Mnp = Mnp;\r | |
511 | Interface->Arp = NULL;\r | |
512 | Interface->ArpHandle = NULL;\r | |
513 | \r | |
e48e37fc | 514 | InitializeListHead (&Interface->ArpQues);\r |
515 | InitializeListHead (&Interface->SentFrames);\r | |
772db4bb | 516 | \r |
517 | Interface->RecvRequest = NULL;\r | |
518 | \r | |
519 | //\r | |
520 | // Get the interface's Mac address and broadcast mac address from SNP\r | |
521 | //\r | |
522 | if (EFI_ERROR (Mnp->GetModeData (Mnp, NULL, &SnpMode))) {\r | |
766c7483 | 523 | FreePool (Interface);\r |
772db4bb | 524 | return NULL;\r |
525 | }\r | |
526 | \r | |
687a2e5f | 527 | CopyMem (&Interface->Mac, &SnpMode.CurrentAddress, sizeof (Interface->Mac));\r |
528 | CopyMem (&Interface->BroadcastMac, &SnpMode.BroadcastAddress, sizeof (Interface->BroadcastMac));\r | |
772db4bb | 529 | Interface->HwaddrLen = SnpMode.HwAddressSize;\r |
530 | \r | |
e48e37fc | 531 | InitializeListHead (&Interface->IpInstances);\r |
772db4bb | 532 | Interface->PromiscRecv = FALSE;\r |
533 | \r | |
534 | return Interface;\r | |
535 | }\r | |
536 | \r | |
537 | \r | |
538 | /**\r | |
539 | Set the interface's address, create and configure\r | |
540 | the ARP child if necessary.\r | |
541 | \r | |
1f6729ff | 542 | @param Interface The interface to set the address.\r |
543 | @param IpAddr The interface's IP address.\r | |
544 | @param SubnetMask The interface's netmask.\r | |
772db4bb | 545 | \r |
546 | @retval EFI_SUCCESS The interface is configured with Ip/netmask pair,\r | |
547 | and a ARP is created for it.\r | |
548 | @retval Others Failed to set the interface's address.\r | |
549 | \r | |
550 | **/\r | |
551 | EFI_STATUS\r | |
552 | Ip4SetAddress (\r | |
5405e9a6 | 553 | IN OUT IP4_INTERFACE *Interface,\r |
554 | IN IP4_ADDR IpAddr,\r | |
555 | IN IP4_ADDR SubnetMask\r | |
772db4bb | 556 | )\r |
557 | {\r | |
558 | EFI_ARP_CONFIG_DATA ArpConfig;\r | |
559 | EFI_STATUS Status;\r | |
772db4bb | 560 | \r |
561 | NET_CHECK_SIGNATURE (Interface, IP4_INTERFACE_SIGNATURE);\r | |
562 | \r | |
772db4bb | 563 | //\r |
564 | // Set the ip/netmask, then compute the subnet broadcast\r | |
565 | // and network broadcast for easy access. When computing\r | |
566 | // nework broadcast, the subnet mask is most like longer\r | |
567 | // than the default netmask (not subneted) as defined in\r | |
568 | // RFC793. If that isn't the case, we are aggregating the\r | |
569 | // networks, use the subnet's mask instead.\r | |
570 | //\r | |
571 | Interface->Ip = IpAddr;\r | |
572 | Interface->SubnetMask = SubnetMask;\r | |
573 | Interface->SubnetBrdcast = (IpAddr | ~SubnetMask);\r | |
01b5ac88 | 574 | Interface->NetBrdcast = (IpAddr | ~SubnetMask);\r |
772db4bb | 575 | \r |
1f6729ff | 576 | //\r |
577 | // Do clean up for Arp child\r | |
578 | //\r | |
579 | if (Interface->ArpHandle != NULL) {\r | |
580 | if (Interface->Arp != NULL) {\r | |
581 | gBS->CloseProtocol (\r | |
582 | Interface->ArpHandle,\r | |
583 | &gEfiArpProtocolGuid,\r | |
584 | Interface->Image,\r | |
585 | Interface->Controller\r | |
586 | );\r | |
d1102dba | 587 | \r |
1f6729ff | 588 | Interface->Arp = NULL;\r |
589 | }\r | |
d1102dba | 590 | \r |
1f6729ff | 591 | NetLibDestroyServiceChild (\r |
592 | Interface->Controller,\r | |
593 | Interface->Image,\r | |
594 | &gEfiArpServiceBindingProtocolGuid,\r | |
595 | &Interface->ArpHandle\r | |
596 | );\r | |
597 | \r | |
598 | Interface->ArpHandle = NULL;\r | |
599 | }\r | |
600 | \r | |
772db4bb | 601 | //\r |
602 | // If the address is NOT all zero, create then configure an ARP child.\r | |
603 | // Pay attention: DHCP configures its station address as 0.0.0.0/0\r | |
604 | //\r | |
772db4bb | 605 | if (IpAddr != IP4_ALLZERO_ADDRESS) {\r |
606 | Status = NetLibCreateServiceChild (\r | |
607 | Interface->Controller,\r | |
608 | Interface->Image,\r | |
609 | &gEfiArpServiceBindingProtocolGuid,\r | |
610 | &Interface->ArpHandle\r | |
611 | );\r | |
612 | \r | |
613 | if (EFI_ERROR (Status)) {\r | |
1f6729ff | 614 | return Status;\r |
772db4bb | 615 | }\r |
616 | \r | |
617 | Status = gBS->OpenProtocol (\r | |
618 | Interface->ArpHandle,\r | |
619 | &gEfiArpProtocolGuid,\r | |
620 | (VOID **) &Interface->Arp,\r | |
621 | Interface->Image,\r | |
622 | Interface->Controller,\r | |
623 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
624 | );\r | |
625 | \r | |
626 | if (EFI_ERROR (Status)) {\r | |
627 | goto ON_ERROR;\r | |
628 | }\r | |
629 | \r | |
630 | IpAddr = HTONL (IpAddr);\r | |
631 | ArpConfig.SwAddressType = IP4_ETHER_PROTO;\r | |
632 | ArpConfig.SwAddressLength = 4;\r | |
633 | ArpConfig.StationAddress = &IpAddr;\r | |
634 | ArpConfig.EntryTimeOut = 0;\r | |
635 | ArpConfig.RetryCount = 0;\r | |
636 | ArpConfig.RetryTimeOut = 0;\r | |
637 | \r | |
638 | Status = Interface->Arp->Configure (Interface->Arp, &ArpConfig);\r | |
639 | \r | |
640 | if (EFI_ERROR (Status)) {\r | |
641 | gBS->CloseProtocol (\r | |
1f6729ff | 642 | Interface->ArpHandle,\r |
643 | &gEfiArpProtocolGuid,\r | |
644 | Interface->Image,\r | |
645 | Interface->Controller\r | |
646 | );\r | |
772db4bb | 647 | \r |
648 | goto ON_ERROR;\r | |
649 | }\r | |
650 | }\r | |
651 | \r | |
652 | Interface->Configured = TRUE;\r | |
653 | return EFI_SUCCESS;\r | |
654 | \r | |
655 | ON_ERROR:\r | |
656 | NetLibDestroyServiceChild (\r | |
657 | Interface->Controller,\r | |
658 | Interface->Image,\r | |
659 | &gEfiArpServiceBindingProtocolGuid,\r | |
660 | &Interface->ArpHandle\r | |
661 | );\r | |
662 | \r | |
663 | return Status;\r | |
664 | }\r | |
665 | \r | |
666 | \r | |
667 | /**\r | |
5405e9a6 | 668 | Filter function to cancel all the frame related to an IP instance.\r |
772db4bb | 669 | \r |
3e8c18da | 670 | @param[in] Frame The transmit request to test whether to cancel\r |
671 | @param[in] Context The context which is the Ip instance that issued\r | |
772db4bb | 672 | the transmit.\r |
673 | \r | |
674 | @retval TRUE The frame belongs to this instance and is to be\r | |
675 | removed\r | |
676 | @retval FALSE The frame doesn't belong to this instance.\r | |
677 | \r | |
678 | **/\r | |
772db4bb | 679 | BOOLEAN\r |
680 | Ip4CancelInstanceFrame (\r | |
681 | IN IP4_LINK_TX_TOKEN *Frame,\r | |
682 | IN VOID *Context\r | |
683 | )\r | |
684 | {\r | |
685 | if (Frame->IpInstance == (IP4_PROTOCOL *) Context) {\r | |
686 | return TRUE;\r | |
687 | }\r | |
688 | \r | |
689 | return FALSE;\r | |
690 | }\r | |
691 | \r | |
692 | \r | |
693 | \r | |
694 | /**\r | |
695 | If there is a pending receive request, cancel it. Don't call\r | |
696 | the receive request's callback because this function can be only\r | |
697 | called if the instance or driver is tearing itself down. It\r | |
698 | doesn't make sense to call it back. But it is necessary to call\r | |
699 | the transmit token's callback to give it a chance to free the\r | |
700 | packet and update the upper layer's transmit request status, say\r | |
701 | that from the UDP.\r | |
702 | \r | |
3e8c18da | 703 | @param[in] Interface The interface used by the IpInstance\r |
772db4bb | 704 | \r |
705 | **/\r | |
706 | VOID\r | |
707 | Ip4CancelReceive (\r | |
708 | IN IP4_INTERFACE *Interface\r | |
709 | )\r | |
710 | {\r | |
711 | EFI_TPL OldTpl;\r | |
712 | IP4_LINK_RX_TOKEN *Token;\r | |
713 | \r | |
714 | if ((Token = Interface->RecvRequest) != NULL) {\r | |
e48e37fc | 715 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
772db4bb | 716 | \r |
717 | Interface->RecvRequest = NULL;\r | |
718 | Interface->Mnp->Cancel (Interface->Mnp, &Token->MnpToken);\r | |
772db4bb | 719 | \r |
e48e37fc | 720 | gBS->RestoreTPL (OldTpl);\r |
772db4bb | 721 | }\r |
722 | }\r | |
723 | \r | |
724 | \r | |
725 | /**\r | |
726 | Free the interface used by IpInstance. All the IP instance with\r | |
727 | the same Ip/Netmask pair share the same interface. It is reference\r | |
728 | counted. All the frames haven't been sent will be cancelled.\r | |
729 | Because the IpInstance is optional, the caller must remove\r | |
730 | IpInstance from the interface's instance list itself.\r | |
731 | \r | |
1f6729ff | 732 | @param[in] Interface The interface used by the IpInstance.\r |
3e8c18da | 733 | @param[in] IpInstance The Ip instance that free the interface. NULL if\r |
5405e9a6 | 734 | the Ip driver is releasing the default interface.\r |
772db4bb | 735 | \r |
736 | @retval EFI_SUCCESS The interface use IpInstance is freed.\r | |
737 | \r | |
738 | **/\r | |
739 | EFI_STATUS\r | |
740 | Ip4FreeInterface (\r | |
741 | IN IP4_INTERFACE *Interface,\r | |
742 | IN IP4_PROTOCOL *IpInstance OPTIONAL\r | |
743 | )\r | |
744 | {\r | |
745 | NET_CHECK_SIGNATURE (Interface, IP4_INTERFACE_SIGNATURE);\r | |
746 | ASSERT (Interface->RefCnt > 0);\r | |
747 | \r | |
748 | //\r | |
749 | // Remove all the pending transmit token related to this IP instance.\r | |
750 | //\r | |
751 | Ip4CancelFrames (Interface, EFI_ABORTED, Ip4CancelInstanceFrame, IpInstance);\r | |
752 | \r | |
d0ccf55e | 753 | if (--Interface->RefCnt > 0) {\r |
754 | return EFI_SUCCESS;\r | |
755 | }\r | |
756 | \r | |
772db4bb | 757 | //\r |
d0ccf55e | 758 | // Destroy the interface if this is the last IP instance that\r |
759 | // has the address. Remove all the system transmitted packets\r | |
760 | // from this interface, cancel the receive request if there is\r | |
761 | // one, and destroy the ARP requests.\r | |
772db4bb | 762 | //\r |
d0ccf55e | 763 | Ip4CancelFrames (Interface, EFI_ABORTED, Ip4CancelInstanceFrame, NULL);\r |
764 | Ip4CancelReceive (Interface);\r | |
765 | \r | |
766 | ASSERT (IsListEmpty (&Interface->IpInstances));\r | |
767 | ASSERT (IsListEmpty (&Interface->ArpQues));\r | |
768 | ASSERT (IsListEmpty (&Interface->SentFrames));\r | |
769 | \r | |
770 | if (Interface->Arp != NULL) {\r | |
772db4bb | 771 | gBS->CloseProtocol (\r |
772 | Interface->ArpHandle,\r | |
773 | &gEfiArpProtocolGuid,\r | |
774 | Interface->Image,\r | |
775 | Interface->Controller\r | |
776 | );\r | |
777 | \r | |
778 | NetLibDestroyServiceChild (\r | |
779 | Interface->Controller,\r | |
780 | Interface->Image,\r | |
781 | &gEfiArpServiceBindingProtocolGuid,\r | |
782 | Interface->ArpHandle\r | |
783 | );\r | |
784 | }\r | |
785 | \r | |
e48e37fc | 786 | RemoveEntryList (&Interface->Link);\r |
766c7483 | 787 | FreePool (Interface);\r |
772db4bb | 788 | \r |
789 | return EFI_SUCCESS;\r | |
790 | }\r | |
791 | \r | |
12ae56cf | 792 | /**\r |
4a76d9b9 | 793 | This function tries to send all the queued frames in ArpQue to the default gateway if\r |
12ae56cf FS |
794 | the ARP resolve for direct destination address is failed when using /32 subnet mask.\r |
795 | \r | |
796 | @param[in] ArpQue The ARP queue of a failed request.\r | |
4a76d9b9 | 797 | \r |
12ae56cf FS |
798 | @retval EFI_SUCCESS All the queued frames have been send to the default route.\r |
799 | @retval Others Failed to send the queued frames.\r | |
4a76d9b9 | 800 | \r |
12ae56cf FS |
801 | **/\r |
802 | EFI_STATUS\r | |
803 | Ip4SendFrameToDefaultRoute (\r | |
804 | IN IP4_ARP_QUE *ArpQue\r | |
805 | )\r | |
806 | {\r | |
807 | LIST_ENTRY *Entry;\r | |
808 | LIST_ENTRY *Next;\r | |
809 | IP4_ROUTE_CACHE_ENTRY *RtCacheEntry;\r | |
810 | IP4_LINK_TX_TOKEN *Token;\r | |
811 | IP4_ADDR Gateway;\r | |
812 | EFI_STATUS Status;\r | |
813 | IP4_ROUTE_ENTRY *DefaultRoute;\r | |
4a76d9b9 | 814 | \r |
12ae56cf FS |
815 | //\r |
816 | // ARP resolve failed when using /32 subnet mask.\r | |
817 | //\r | |
818 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &ArpQue->Frames) {\r | |
819 | RemoveEntryList (Entry);\r | |
820 | Token = NET_LIST_USER_STRUCT (Entry, IP4_LINK_TX_TOKEN, Link);\r | |
821 | ASSERT (Token->Interface->SubnetMask == IP4_ALLONE_ADDRESS);\r | |
822 | //\r | |
823 | // Find the default gateway IP address. The default route was saved to the RtCacheEntry->Tag in Ip4Route().\r | |
824 | //\r | |
825 | RtCacheEntry = NULL;\r | |
826 | if (Token->IpInstance != NULL) {\r | |
827 | RtCacheEntry = Ip4FindRouteCache (Token->IpInstance->RouteTable, NTOHL (ArpQue->Ip), Token->Interface->Ip);\r | |
828 | }\r | |
829 | if (RtCacheEntry == NULL) {\r | |
830 | RtCacheEntry = Ip4FindRouteCache (Token->IpSb->DefaultRouteTable, NTOHL (ArpQue->Ip), Token->Interface->Ip);\r | |
831 | }\r | |
832 | if (RtCacheEntry == NULL) {\r | |
833 | Status= EFI_NO_MAPPING;\r | |
834 | goto ON_ERROR;\r | |
835 | }\r | |
836 | DefaultRoute = (IP4_ROUTE_ENTRY*)RtCacheEntry->Tag;\r | |
837 | if (DefaultRoute == NULL) {\r | |
838 | Status= EFI_NO_MAPPING;\r | |
839 | goto ON_ERROR;\r | |
840 | }\r | |
841 | //\r | |
842 | // Try to send the frame to the default route.\r | |
843 | //\r | |
844 | Gateway = DefaultRoute->NextHop;\r | |
845 | if (ArpQue->Ip == Gateway) {\r | |
846 | //\r | |
4a76d9b9 | 847 | // ARP resolve for the default route is failed, return error to caller.\r |
12ae56cf FS |
848 | //\r |
849 | Status= EFI_NO_MAPPING;\r | |
850 | goto ON_ERROR;\r | |
851 | }\r | |
852 | RtCacheEntry->NextHop = Gateway;\r | |
853 | Status = Ip4SendFrame (Token->Interface,Token->IpInstance,Token->Packet,Gateway,Token->CallBack,Token->Context,Token->IpSb);\r | |
854 | if (EFI_ERROR (Status)) {\r | |
855 | Status= EFI_NO_MAPPING;\r | |
856 | goto ON_ERROR;\r | |
857 | }\r | |
858 | Ip4FreeRouteCacheEntry (RtCacheEntry);\r | |
859 | }\r | |
860 | \r | |
861 | return EFI_SUCCESS;\r | |
4a76d9b9 | 862 | \r |
12ae56cf FS |
863 | ON_ERROR:\r |
864 | if (RtCacheEntry != NULL) {\r | |
865 | Ip4FreeRouteCacheEntry (RtCacheEntry);\r | |
866 | }\r | |
867 | Token->CallBack (Token->IpInstance, Token->Packet, Status, 0, Token->Context);\r | |
868 | Ip4FreeLinkTxToken (Token);\r | |
869 | return Status;\r | |
870 | }\r | |
871 | \r | |
772db4bb | 872 | \r |
873 | /**\r | |
12ae56cf | 874 | Callback function when ARP request are finished. It will cancel\r |
772db4bb | 875 | all the queued frame if the ARP requests failed. Or transmit them\r |
876 | if the request succeed.\r | |
877 | \r | |
3e8c18da | 878 | @param[in] Context The context of the callback, a point to the ARP\r |
772db4bb | 879 | queue\r |
880 | \r | |
772db4bb | 881 | **/\r |
772db4bb | 882 | VOID\r |
883 | EFIAPI\r | |
36ee91ca | 884 | Ip4OnArpResolvedDpc (\r |
772db4bb | 885 | IN VOID *Context\r |
886 | )\r | |
887 | {\r | |
e48e37fc | 888 | LIST_ENTRY *Entry;\r |
889 | LIST_ENTRY *Next;\r | |
772db4bb | 890 | IP4_ARP_QUE *ArpQue;\r |
891 | IP4_INTERFACE *Interface;\r | |
892 | IP4_LINK_TX_TOKEN *Token;\r | |
893 | EFI_STATUS Status;\r | |
12ae56cf | 894 | EFI_STATUS IoStatus;\r |
772db4bb | 895 | \r |
896 | ArpQue = (IP4_ARP_QUE *) Context;\r | |
897 | NET_CHECK_SIGNATURE (ArpQue, IP4_FRAME_ARP_SIGNATURE);\r | |
898 | \r | |
e48e37fc | 899 | RemoveEntryList (&ArpQue->Link);\r |
772db4bb | 900 | \r |
901 | //\r | |
4a76d9b9 | 902 | // ARP resolve failed for some reason.\r |
772db4bb | 903 | //\r |
904 | if (NET_MAC_EQUAL (&ArpQue->Mac, &mZeroMacAddress, ArpQue->Interface->HwaddrLen)) {\r | |
12ae56cf FS |
905 | if (ArpQue->Interface->SubnetMask != IP4_ALLONE_ADDRESS) {\r |
906 | //\r | |
907 | // Release all the frame and ARP queue itself. Ip4FreeArpQue will call the frame's\r | |
908 | // owner back.\r | |
909 | //\r | |
910 | IoStatus = EFI_NO_MAPPING;\r | |
911 | } else {\r | |
912 | //\r | |
913 | // ARP resolve failed when using 32bit subnet mask, try to send the packets to the\r | |
914 | // default route.\r | |
915 | //\r | |
916 | IoStatus = Ip4SendFrameToDefaultRoute (ArpQue);\r | |
917 | }\r | |
918 | goto ON_EXIT;\r | |
772db4bb | 919 | }\r |
920 | \r | |
921 | //\r | |
922 | // ARP resolve succeeded, Transmit all the frame. Release the ARP\r | |
923 | // queue. It isn't necessary for us to cache the ARP binding because\r | |
924 | // we always check the ARP cache first before transmit.\r | |
925 | //\r | |
12ae56cf | 926 | IoStatus = EFI_SUCCESS;\r |
772db4bb | 927 | Interface = ArpQue->Interface;\r |
928 | \r | |
929 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &ArpQue->Frames) {\r | |
e48e37fc | 930 | RemoveEntryList (Entry);\r |
772db4bb | 931 | \r |
932 | Token = NET_LIST_USER_STRUCT (Entry, IP4_LINK_TX_TOKEN, Link);\r | |
687a2e5f | 933 | CopyMem (&Token->DstMac, &ArpQue->Mac, sizeof (Token->DstMac));\r |
772db4bb | 934 | \r |
36ee91ca | 935 | //\r |
936 | // Insert the tx token before transmitting it via MNP as the FrameSentDpc\r | |
937 | // may be called before Mnp->Transmit returns which will remove this tx\r | |
938 | // token from the SentFrames list. Remove it from the list if the returned\r | |
939 | // Status of Mnp->Transmit is not EFI_SUCCESS as in this case the\r | |
940 | // FrameSentDpc won't be queued.\r | |
941 | //\r | |
e48e37fc | 942 | InsertTailList (&Interface->SentFrames, &Token->Link);\r |
772db4bb | 943 | \r |
36ee91ca | 944 | Status = Interface->Mnp->Transmit (Interface->Mnp, &Token->MnpToken);\r |
772db4bb | 945 | if (EFI_ERROR (Status)) {\r |
ad18ec95 | 946 | RemoveEntryList (&Token->Link);\r |
772db4bb | 947 | Token->CallBack (Token->IpInstance, Token->Packet, Status, 0, Token->Context);\r |
948 | \r | |
949 | Ip4FreeLinkTxToken (Token);\r | |
950 | continue;\r | |
951 | }\r | |
772db4bb | 952 | }\r |
953 | \r | |
12ae56cf FS |
954 | ON_EXIT:\r |
955 | Ip4FreeArpQue (ArpQue, IoStatus);\r | |
772db4bb | 956 | }\r |
957 | \r | |
5405e9a6 | 958 | /**\r |
959 | Request Ip4OnArpResolvedDpc as a DPC at TPL_CALLBACK.\r | |
960 | \r | |
3e8c18da | 961 | @param Event The Arp request event.\r |
962 | @param Context The context of the callback, a point to the ARP\r | |
963 | queue.\r | |
d1102dba | 964 | \r |
5405e9a6 | 965 | **/\r |
36ee91ca | 966 | VOID\r |
967 | EFIAPI\r | |
968 | Ip4OnArpResolved (\r | |
969 | IN EFI_EVENT Event,\r | |
970 | IN VOID *Context\r | |
971 | )\r | |
36ee91ca | 972 | {\r |
973 | //\r | |
974 | // Request Ip4OnArpResolvedDpc as a DPC at TPL_CALLBACK\r | |
975 | //\r | |
d8d26fb2 | 976 | QueueDpc (TPL_CALLBACK, Ip4OnArpResolvedDpc, Context);\r |
36ee91ca | 977 | }\r |
978 | \r | |
979 | \r | |
772db4bb | 980 | \r |
981 | /**\r | |
982 | Callback funtion when frame transmission is finished. It will\r | |
983 | call the frame owner's callback function to tell it the result.\r | |
984 | \r | |
3e8c18da | 985 | @param[in] Context Context which is point to the token.\r |
772db4bb | 986 | \r |
987 | **/\r | |
772db4bb | 988 | VOID\r |
989 | EFIAPI\r | |
36ee91ca | 990 | Ip4OnFrameSentDpc (\r |
772db4bb | 991 | IN VOID *Context\r |
992 | )\r | |
993 | {\r | |
994 | IP4_LINK_TX_TOKEN *Token;\r | |
995 | \r | |
996 | Token = (IP4_LINK_TX_TOKEN *) Context;\r | |
997 | NET_CHECK_SIGNATURE (Token, IP4_FRAME_TX_SIGNATURE);\r | |
998 | \r | |
e48e37fc | 999 | RemoveEntryList (&Token->Link);\r |
772db4bb | 1000 | \r |
1001 | Token->CallBack (\r | |
1002 | Token->IpInstance,\r | |
1003 | Token->Packet,\r | |
1004 | Token->MnpToken.Status,\r | |
1005 | 0,\r | |
1006 | Token->Context\r | |
1007 | );\r | |
1008 | \r | |
1009 | Ip4FreeLinkTxToken (Token);\r | |
1010 | }\r | |
1011 | \r | |
5405e9a6 | 1012 | /**\r |
1013 | Request Ip4OnFrameSentDpc as a DPC at TPL_CALLBACK.\r | |
1014 | \r | |
3e8c18da | 1015 | @param[in] Event The transmit token's event.\r |
1016 | @param[in] Context Context which is point to the token.\r | |
5405e9a6 | 1017 | \r |
1018 | **/\r | |
36ee91ca | 1019 | VOID\r |
1020 | EFIAPI\r | |
1021 | Ip4OnFrameSent (\r | |
1022 | IN EFI_EVENT Event,\r | |
1023 | IN VOID *Context\r | |
1024 | )\r | |
36ee91ca | 1025 | {\r |
1026 | //\r | |
1027 | // Request Ip4OnFrameSentDpc as a DPC at TPL_CALLBACK\r | |
1028 | //\r | |
d8d26fb2 | 1029 | QueueDpc (TPL_CALLBACK, Ip4OnFrameSentDpc, Context);\r |
36ee91ca | 1030 | }\r |
1031 | \r | |
772db4bb | 1032 | \r |
1033 | \r | |
1034 | /**\r | |
1035 | Send a frame from the interface. If the next hop is broadcast or\r | |
1036 | multicast address, it is transmitted immediately. If the next hop\r | |
1037 | is a unicast, it will consult ARP to resolve the NextHop's MAC.\r | |
1038 | If some error happened, the CallBack won't be called. So, the caller\r | |
1039 | must test the return value, and take action when there is an error.\r | |
1040 | \r | |
3e8c18da | 1041 | @param[in] Interface The interface to send the frame from\r |
1042 | @param[in] IpInstance The IP child that request the transmission. NULL\r | |
772db4bb | 1043 | if it is the IP4 driver itself.\r |
3e8c18da | 1044 | @param[in] Packet The packet to transmit.\r |
1045 | @param[in] NextHop The immediate destination to transmit the packet\r | |
772db4bb | 1046 | to.\r |
3e8c18da | 1047 | @param[in] CallBack Function to call back when transmit finished.\r |
1048 | @param[in] Context Opaque parameter to the call back.\r | |
12ae56cf | 1049 | @param[in] IpSb The pointer to the IP4 service binding instance.\r |
772db4bb | 1050 | \r |
1051 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to send the frame\r | |
1052 | @retval EFI_NO_MAPPING Can't resolve the MAC for the nexthop\r | |
1053 | @retval EFI_SUCCESS The packet is successfully transmitted.\r | |
5405e9a6 | 1054 | @retval other Other error occurs.\r |
772db4bb | 1055 | \r |
1056 | **/\r | |
1057 | EFI_STATUS\r | |
1058 | Ip4SendFrame (\r | |
1059 | IN IP4_INTERFACE *Interface,\r | |
24af132f | 1060 | IN IP4_PROTOCOL *IpInstance OPTIONAL,\r |
772db4bb | 1061 | IN NET_BUF *Packet,\r |
1062 | IN IP4_ADDR NextHop,\r | |
1063 | IN IP4_FRAME_CALLBACK CallBack,\r | |
12ae56cf FS |
1064 | IN VOID *Context,\r |
1065 | IN IP4_SERVICE *IpSb\r | |
772db4bb | 1066 | )\r |
1067 | {\r | |
1068 | IP4_LINK_TX_TOKEN *Token;\r | |
e48e37fc | 1069 | LIST_ENTRY *Entry;\r |
772db4bb | 1070 | IP4_ARP_QUE *ArpQue;\r |
1071 | EFI_ARP_PROTOCOL *Arp;\r | |
1072 | EFI_STATUS Status;\r | |
1073 | \r | |
1074 | ASSERT (Interface->Configured);\r | |
1075 | \r | |
12ae56cf | 1076 | Token = Ip4WrapLinkTxToken (Interface, IpInstance, Packet, CallBack, Context, IpSb);\r |
772db4bb | 1077 | \r |
1078 | if (Token == NULL) {\r | |
1079 | return EFI_OUT_OF_RESOURCES;\r | |
1080 | }\r | |
1081 | \r | |
1082 | //\r | |
1083 | // Get the destination MAC address for multicast and broadcasts.\r | |
1084 | // Don't depend on ARP to solve the address since there maybe no\r | |
1085 | // ARP at all. Ip4Output has set NextHop to 255.255.255.255 for\r | |
1086 | // all the broadcasts.\r | |
1087 | //\r | |
1088 | if (NextHop == IP4_ALLONE_ADDRESS) {\r | |
687a2e5f | 1089 | CopyMem (&Token->DstMac, &Interface->BroadcastMac, sizeof (Token->DstMac));\r |
772db4bb | 1090 | goto SEND_NOW;\r |
1091 | \r | |
1092 | } else if (IP4_IS_MULTICAST (NextHop)) {\r | |
1093 | \r | |
1094 | Status = Ip4GetMulticastMac (Interface->Mnp, NextHop, &Token->DstMac);\r | |
1095 | \r | |
1096 | if (EFI_ERROR (Status)) {\r | |
1097 | goto ON_ERROR;\r | |
1098 | }\r | |
1099 | \r | |
1100 | goto SEND_NOW;\r | |
1101 | }\r | |
1102 | \r | |
1103 | //\r | |
1104 | // Can only send out multicast/broadcast if the IP address is zero\r | |
1105 | //\r | |
1106 | if ((Arp = Interface->Arp) == NULL) {\r | |
1107 | Status = EFI_NO_MAPPING;\r | |
1108 | goto ON_ERROR;\r | |
1109 | }\r | |
1110 | \r | |
1111 | //\r | |
1112 | // First check whether this binding is in the ARP cache.\r | |
1113 | //\r | |
1114 | NextHop = HTONL (NextHop);\r | |
1115 | Status = Arp->Request (Arp, &NextHop, NULL, &Token->DstMac);\r | |
1116 | \r | |
1117 | if (Status == EFI_SUCCESS) {\r | |
1118 | goto SEND_NOW;\r | |
1119 | \r | |
1120 | } else if (Status != EFI_NOT_READY) {\r | |
1121 | goto ON_ERROR;\r | |
1122 | }\r | |
1123 | \r | |
1124 | //\r | |
1125 | // Have to do asynchronous ARP resolution. First check\r | |
1126 | // whether there is already a pending request.\r | |
1127 | //\r | |
1128 | ArpQue = NULL;\r | |
1129 | \r | |
1130 | NET_LIST_FOR_EACH (Entry, &Interface->ArpQues) {\r | |
1131 | ArpQue = NET_LIST_USER_STRUCT (Entry, IP4_ARP_QUE, Link);\r | |
1132 | \r | |
1133 | if (ArpQue->Ip == NextHop) {\r | |
1134 | break;\r | |
1135 | }\r | |
1136 | }\r | |
1137 | \r | |
1138 | //\r | |
1139 | // Found a pending ARP request, enqueue the frame then return\r | |
1140 | //\r | |
1141 | if (Entry != &Interface->ArpQues) {\r | |
e48e37fc | 1142 | InsertTailList (&ArpQue->Frames, &Token->Link);\r |
772db4bb | 1143 | return EFI_SUCCESS;\r |
1144 | }\r | |
1145 | \r | |
1146 | //\r | |
1147 | // First frame to NextHop, issue an asynchronous ARP requests\r | |
1148 | //\r | |
1149 | ArpQue = Ip4CreateArpQue (Interface, NextHop);\r | |
1150 | \r | |
1151 | if (ArpQue == NULL) {\r | |
1152 | Status = EFI_OUT_OF_RESOURCES;\r | |
1153 | goto ON_ERROR;\r | |
1154 | }\r | |
1155 | \r | |
1156 | Status = Arp->Request (Arp, &ArpQue->Ip, ArpQue->OnResolved, ArpQue->Mac.Addr);\r | |
1157 | \r | |
1158 | if (EFI_ERROR (Status) && (Status != EFI_NOT_READY)) {\r | |
1159 | Ip4FreeArpQue (ArpQue, EFI_NO_MAPPING);\r | |
1160 | goto ON_ERROR;\r | |
1161 | }\r | |
1162 | \r | |
e48e37fc | 1163 | InsertHeadList (&ArpQue->Frames, &Token->Link);\r |
1164 | InsertHeadList (&Interface->ArpQues, &ArpQue->Link);\r | |
772db4bb | 1165 | return EFI_SUCCESS;\r |
1166 | \r | |
1167 | SEND_NOW:\r | |
36ee91ca | 1168 | //\r |
1169 | // Insert the tx token into the SentFrames list before calling Mnp->Transmit.\r | |
1170 | // Remove it if the returned status is not EFI_SUCCESS.\r | |
1171 | //\r | |
e48e37fc | 1172 | InsertTailList (&Interface->SentFrames, &Token->Link);\r |
772db4bb | 1173 | Status = Interface->Mnp->Transmit (Interface->Mnp, &Token->MnpToken);\r |
772db4bb | 1174 | if (EFI_ERROR (Status)) {\r |
ad18ec95 | 1175 | RemoveEntryList (&Token->Link);\r |
772db4bb | 1176 | goto ON_ERROR;\r |
1177 | }\r | |
1178 | \r | |
772db4bb | 1179 | return EFI_SUCCESS;\r |
1180 | \r | |
1181 | ON_ERROR:\r | |
1182 | Ip4FreeLinkTxToken (Token);\r | |
1183 | return Status;\r | |
1184 | }\r | |
1185 | \r | |
1186 | \r | |
1187 | /**\r | |
1188 | Call back function when the received packet is freed.\r | |
1189 | Check Ip4OnFrameReceived for information.\r | |
1190 | \r | |
3e8c18da | 1191 | @param Context Context, which is the IP4_LINK_RX_TOKEN.\r |
772db4bb | 1192 | \r |
1193 | **/\r | |
772db4bb | 1194 | VOID\r |
e798cd87 | 1195 | EFIAPI\r |
772db4bb | 1196 | Ip4RecycleFrame (\r |
1197 | IN VOID *Context\r | |
1198 | )\r | |
1199 | {\r | |
1200 | IP4_LINK_RX_TOKEN *Frame;\r | |
1201 | \r | |
1202 | Frame = (IP4_LINK_RX_TOKEN *) Context;\r | |
1203 | NET_CHECK_SIGNATURE (Frame, IP4_FRAME_RX_SIGNATURE);\r | |
1204 | \r | |
1205 | gBS->SignalEvent (Frame->MnpToken.Packet.RxData->RecycleEvent);\r | |
1206 | Ip4FreeFrameRxToken (Frame);\r | |
1207 | }\r | |
1208 | \r | |
1209 | \r | |
1210 | /**\r | |
1211 | Received a frame from MNP, wrap it in net buffer then deliver\r | |
1212 | it to IP's input function. The ownship of the packet also\r | |
1213 | transferred to IP. When Ip is finished with this packet, it\r | |
1214 | will call NetbufFree to release the packet, NetbufFree will\r | |
1215 | again call the Ip4RecycleFrame to signal MNP's event and free\r | |
1216 | the token used.\r | |
1217 | \r | |
772db4bb | 1218 | @param Context Context for the callback.\r |
1219 | \r | |
772db4bb | 1220 | **/\r |
772db4bb | 1221 | VOID\r |
1222 | EFIAPI\r | |
36ee91ca | 1223 | Ip4OnFrameReceivedDpc (\r |
772db4bb | 1224 | IN VOID *Context\r |
1225 | )\r | |
1226 | {\r | |
1227 | EFI_MANAGED_NETWORK_COMPLETION_TOKEN *MnpToken;\r | |
1228 | EFI_MANAGED_NETWORK_RECEIVE_DATA *MnpRxData;\r | |
1229 | IP4_LINK_RX_TOKEN *Token;\r | |
1230 | NET_FRAGMENT Netfrag;\r | |
1231 | NET_BUF *Packet;\r | |
1232 | UINT32 Flag;\r | |
1233 | \r | |
1234 | Token = (IP4_LINK_RX_TOKEN *) Context;\r | |
1235 | NET_CHECK_SIGNATURE (Token, IP4_FRAME_RX_SIGNATURE);\r | |
1236 | \r | |
1237 | //\r | |
1238 | // First clear the interface's receive request in case the\r | |
1239 | // caller wants to call Ip4ReceiveFrame in the callback.\r | |
1240 | //\r | |
1241 | Token->Interface->RecvRequest = NULL;\r | |
1242 | \r | |
1243 | MnpToken = &Token->MnpToken;\r | |
1244 | MnpRxData = MnpToken->Packet.RxData;\r | |
1245 | \r | |
1246 | if (EFI_ERROR (MnpToken->Status) || (MnpRxData == NULL)) {\r | |
1247 | Token->CallBack (Token->IpInstance, NULL, MnpToken->Status, 0, Token->Context);\r | |
1248 | Ip4FreeFrameRxToken (Token);\r | |
1249 | \r | |
1250 | return ;\r | |
1251 | }\r | |
1252 | \r | |
1253 | //\r | |
1254 | // Wrap the frame in a net buffer then deliever it to IP input.\r | |
1255 | // IP will reassemble the packet, and deliver it to upper layer\r | |
1256 | //\r | |
1257 | Netfrag.Len = MnpRxData->DataLength;\r | |
1258 | Netfrag.Bulk = MnpRxData->PacketData;\r | |
1259 | \r | |
1260 | Packet = NetbufFromExt (&Netfrag, 1, 0, IP4_MAX_HEADLEN, Ip4RecycleFrame, Token);\r | |
1261 | \r | |
1262 | if (Packet == NULL) {\r | |
1263 | gBS->SignalEvent (MnpRxData->RecycleEvent);\r | |
1264 | \r | |
1265 | Token->CallBack (Token->IpInstance, NULL, EFI_OUT_OF_RESOURCES, 0, Token->Context);\r | |
1266 | Ip4FreeFrameRxToken (Token);\r | |
1267 | \r | |
1268 | return ;\r | |
1269 | }\r | |
1270 | \r | |
1271 | Flag = (MnpRxData->BroadcastFlag ? IP4_LINK_BROADCAST : 0);\r | |
1272 | Flag |= (MnpRxData->MulticastFlag ? IP4_LINK_MULTICAST : 0);\r | |
1273 | Flag |= (MnpRxData->PromiscuousFlag ? IP4_LINK_PROMISC : 0);\r | |
1274 | \r | |
1275 | Token->CallBack (Token->IpInstance, Packet, EFI_SUCCESS, Flag, Token->Context);\r | |
1276 | }\r | |
1277 | \r | |
2ff29212 | 1278 | /**\r |
2ff29212 | 1279 | Request Ip4OnFrameReceivedDpc as a DPC at TPL_CALLBACK.\r |
1280 | \r | |
1281 | @param Event The receive event delivered to MNP for receive.\r | |
1282 | @param Context Context for the callback.\r | |
2ff29212 | 1283 | \r |
1284 | **/\r | |
36ee91ca | 1285 | VOID\r |
1286 | EFIAPI\r | |
1287 | Ip4OnFrameReceived (\r | |
1288 | IN EFI_EVENT Event,\r | |
1289 | IN VOID *Context\r | |
1290 | )\r | |
36ee91ca | 1291 | {\r |
1292 | //\r | |
1293 | // Request Ip4OnFrameReceivedDpc as a DPC at TPL_CALLBACK\r | |
1294 | //\r | |
d8d26fb2 | 1295 | QueueDpc (TPL_CALLBACK, Ip4OnFrameReceivedDpc, Context);\r |
36ee91ca | 1296 | }\r |
1297 | \r | |
772db4bb | 1298 | \r |
1299 | /**\r | |
1300 | Request to receive the packet from the interface.\r | |
1301 | \r | |
1f6729ff | 1302 | @param[in] Interface The interface to receive the frames from.\r |
3e8c18da | 1303 | @param[in] IpInstance The instance that requests the receive. NULL for\r |
772db4bb | 1304 | the driver itself.\r |
3e8c18da | 1305 | @param[in] CallBack Function to call when receive finished.\r |
1f6729ff | 1306 | @param[in] Context Opaque parameter to the callback.\r |
772db4bb | 1307 | \r |
1308 | @retval EFI_ALREADY_STARTED There is already a pending receive request.\r | |
1f6729ff | 1309 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to receive.\r |
772db4bb | 1310 | @retval EFI_SUCCESS The recieve request has been started.\r |
5405e9a6 | 1311 | @retval other Other error occurs.\r |
772db4bb | 1312 | \r |
1313 | **/\r | |
1314 | EFI_STATUS\r | |
1315 | Ip4ReceiveFrame (\r | |
1316 | IN IP4_INTERFACE *Interface,\r | |
24af132f | 1317 | IN IP4_PROTOCOL *IpInstance OPTIONAL,\r |
772db4bb | 1318 | IN IP4_FRAME_CALLBACK CallBack,\r |
1319 | IN VOID *Context\r | |
1320 | )\r | |
1321 | {\r | |
1322 | IP4_LINK_RX_TOKEN *Token;\r | |
1323 | EFI_STATUS Status;\r | |
1324 | \r | |
1325 | NET_CHECK_SIGNATURE (Interface, IP4_INTERFACE_SIGNATURE);\r | |
1326 | \r | |
1327 | if (Interface->RecvRequest != NULL) {\r | |
1328 | return EFI_ALREADY_STARTED;\r | |
1329 | }\r | |
1330 | \r | |
1331 | Token = Ip4CreateLinkRxToken (Interface, IpInstance, CallBack, Context);\r | |
1332 | \r | |
1333 | if (Token == NULL) {\r | |
1334 | return EFI_OUT_OF_RESOURCES;\r | |
1335 | }\r | |
1336 | \r | |
36ee91ca | 1337 | Interface->RecvRequest = Token;\r |
772db4bb | 1338 | Status = Interface->Mnp->Receive (Interface->Mnp, &Token->MnpToken);\r |
772db4bb | 1339 | if (EFI_ERROR (Status)) {\r |
36ee91ca | 1340 | Interface->RecvRequest = NULL;\r |
772db4bb | 1341 | Ip4FreeFrameRxToken (Token);\r |
1342 | return Status;\r | |
1343 | }\r | |
772db4bb | 1344 | return EFI_SUCCESS;\r |
1345 | }\r |