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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 | Module Name:\r | |
13 | \r | |
14 | Tcp4Driver.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | \r | |
19 | **/\r | |
20 | \r | |
21 | #include "Tcp4Main.h"\r | |
22 | \r | |
23 | \r | |
24 | UINT16 mTcp4RandomPort;\r | |
25 | extern EFI_COMPONENT_NAME_PROTOCOL gTcp4ComponentName;\r | |
26 | extern EFI_COMPONENT_NAME2_PROTOCOL gTcp4ComponentName2;\r | |
27 | \r | |
28 | TCP4_HEARTBEAT_TIMER mTcp4Timer = {\r | |
29 | NULL,\r | |
30 | 0\r | |
31 | };\r | |
32 | \r | |
33 | EFI_TCP4_PROTOCOL mTcp4ProtocolTemplate = {\r | |
34 | Tcp4GetModeData,\r | |
35 | Tcp4Configure,\r | |
36 | Tcp4Routes,\r | |
37 | Tcp4Connect,\r | |
38 | Tcp4Accept,\r | |
39 | Tcp4Transmit,\r | |
40 | Tcp4Receive,\r | |
41 | Tcp4Close,\r | |
42 | Tcp4Cancel,\r | |
43 | Tcp4Poll\r | |
44 | };\r | |
45 | \r | |
46 | SOCK_INIT_DATA mTcp4DefaultSockData = {\r | |
47 | SOCK_STREAM,\r | |
48 | (SOCK_STATE) 0,\r | |
49 | NULL,\r | |
50 | TCP_BACKLOG,\r | |
51 | TCP_SND_BUF_SIZE,\r | |
52 | TCP_RCV_BUF_SIZE,\r | |
53 | &mTcp4ProtocolTemplate,\r | |
54 | Tcp4CreateSocketCallback,\r | |
55 | Tcp4DestroySocketCallback,\r | |
56 | NULL,\r | |
57 | NULL,\r | |
58 | 0,\r | |
59 | Tcp4Dispatcher,\r | |
60 | NULL,\r | |
61 | };\r | |
62 | \r | |
63 | EFI_DRIVER_BINDING_PROTOCOL mTcp4DriverBinding = {\r | |
64 | Tcp4DriverBindingSupported,\r | |
65 | Tcp4DriverBindingStart,\r | |
66 | Tcp4DriverBindingStop,\r | |
67 | 0xa,\r | |
68 | NULL,\r | |
69 | NULL\r | |
70 | };\r | |
71 | \r | |
72 | EFI_SERVICE_BINDING_PROTOCOL mTcp4ServiceBinding = {\r | |
73 | Tcp4ServiceBindingCreateChild,\r | |
74 | Tcp4ServiceBindingDestroyChild\r | |
75 | };\r | |
76 | \r | |
77 | \r | |
78 | /**\r | |
79 | Create and start the heartbeat timer for TCP driver.\r | |
80 | \r | |
81 | None.\r | |
82 | \r | |
83 | @retval EFI_SUCCESS The timer is successfully created and started.\r | |
84 | @retval other The timer is not created.\r | |
85 | \r | |
86 | **/\r | |
87 | EFI_STATUS\r | |
88 | Tcp4CreateTimer (\r | |
89 | VOID\r | |
90 | )\r | |
91 | {\r | |
92 | EFI_STATUS Status;\r | |
93 | \r | |
94 | Status = EFI_SUCCESS;\r | |
95 | \r | |
96 | if (mTcp4Timer.RefCnt == 0) {\r | |
97 | \r | |
98 | Status = gBS->CreateEvent (\r | |
99 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
100 | TPL_NOTIFY,\r | |
101 | TcpTicking,\r | |
102 | NULL,\r | |
103 | &mTcp4Timer.TimerEvent\r | |
104 | );\r | |
105 | if (!EFI_ERROR (Status)) {\r | |
106 | \r | |
107 | Status = gBS->SetTimer (\r | |
108 | mTcp4Timer.TimerEvent,\r | |
109 | TimerPeriodic,\r | |
110 | (UINT64) (TICKS_PER_SECOND / TCP_TICK_HZ)\r | |
111 | );\r | |
112 | }\r | |
113 | }\r | |
114 | \r | |
115 | if (!EFI_ERROR (Status)) {\r | |
116 | \r | |
117 | mTcp4Timer.RefCnt++;\r | |
118 | }\r | |
119 | \r | |
120 | return Status;\r | |
121 | }\r | |
122 | \r | |
123 | \r | |
124 | /**\r | |
125 | Stop and destroy the heartbeat timer for TCP driver.\r | |
126 | \r | |
127 | None\r | |
128 | \r | |
129 | None\r | |
130 | \r | |
131 | **/\r | |
132 | VOID\r | |
133 | Tcp4DestroyTimer ()\r | |
134 | {\r | |
135 | ASSERT (mTcp4Timer.RefCnt > 0);\r | |
136 | \r | |
137 | mTcp4Timer.RefCnt--;\r | |
138 | \r | |
139 | if (mTcp4Timer.RefCnt > 0) {\r | |
140 | return;\r | |
141 | }\r | |
142 | \r | |
143 | gBS->SetTimer (mTcp4Timer.TimerEvent, TimerCancel, 0);\r | |
144 | gBS->CloseEvent (mTcp4Timer.TimerEvent);\r | |
145 | mTcp4Timer.TimerEvent = NULL;\r | |
146 | }\r | |
147 | \r | |
148 | /**\r | |
149 | The entry point for Tcp4 driver. \r | |
150 | Used to install Tcp4 driver on the ImageHandle.\r | |
151 | \r | |
152 | @param ImageHandle The firmware allocated handle for this\r | |
153 | driver image.\r | |
154 | @param SystemTable Pointer to the EFI system table.\r | |
155 | \r | |
156 | @retval EFI_SUCCESS Driver loaded.\r | |
157 | @retval other Driver not loaded.\r | |
158 | \r | |
159 | **/\r | |
160 | EFI_STATUS\r | |
161 | EFIAPI\r | |
162 | Tcp4DriverEntryPoint (\r | |
163 | IN EFI_HANDLE ImageHandle,\r | |
164 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
165 | )\r | |
166 | {\r | |
167 | EFI_STATUS Status;\r | |
168 | UINT32 Seed;\r | |
169 | \r | |
170 | //\r | |
171 | // Install the TCP4 Driver Binding Protocol\r | |
172 | //\r | |
173 | Status = EfiLibInstallDriverBindingComponentName2 (\r | |
174 | ImageHandle,\r | |
175 | SystemTable,\r | |
176 | &mTcp4DriverBinding,\r | |
177 | ImageHandle,\r | |
178 | &gTcp4ComponentName,\r | |
179 | &gTcp4ComponentName2\r | |
180 | );\r | |
181 | ASSERT_EFI_ERROR (Status);\r | |
182 | //\r | |
183 | // Initialize ISS and random port.\r | |
184 | //\r | |
185 | Seed = NetRandomInitSeed ();\r | |
186 | mTcpGlobalIss = NET_RANDOM (Seed) % mTcpGlobalIss;\r | |
187 | mTcp4RandomPort = (UINT16) ( TCP4_PORT_KNOWN +\r | |
188 | (UINT16) (NET_RANDOM(Seed) % TCP4_PORT_KNOWN));\r | |
189 | \r | |
190 | return Status;\r | |
191 | }\r | |
192 | \r | |
193 | \r | |
194 | /**\r | |
195 | Test to see if this driver supports ControllerHandle.\r | |
196 | \r | |
197 | @param This Protocol instance pointer.\r | |
198 | @param ControllerHandle Handle of device to test.\r | |
199 | @param RemainingDevicePath Optional parameter use to pick a specific child\r | |
200 | device to start.\r | |
201 | \r | |
202 | @retval EFI_SUCCESS This driver supports this device.\r | |
203 | @retval EFI_ALREADY_STARTED This driver is already running on this device.\r | |
204 | @retval other This driver does not support this device.\r | |
205 | \r | |
206 | **/\r | |
207 | EFI_STATUS\r | |
208 | EFIAPI\r | |
209 | Tcp4DriverBindingSupported (\r | |
210 | IN EFI_DRIVER_BINDING_PROTOCOL * This,\r | |
211 | IN EFI_HANDLE ControllerHandle,\r | |
212 | IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL\r | |
213 | )\r | |
214 | {\r | |
215 | EFI_STATUS Status;\r | |
216 | \r | |
217 | //\r | |
218 | // Test for the Tcp4ServiceBinding Protocol\r | |
219 | //\r | |
220 | Status = gBS->OpenProtocol (\r | |
221 | ControllerHandle,\r | |
222 | &gEfiTcp4ServiceBindingProtocolGuid,\r | |
223 | NULL,\r | |
224 | This->DriverBindingHandle,\r | |
225 | ControllerHandle,\r | |
226 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
227 | );\r | |
228 | if (!EFI_ERROR (Status)) {\r | |
229 | return EFI_ALREADY_STARTED;\r | |
230 | }\r | |
231 | \r | |
232 | //\r | |
233 | // Test for the Ip4 Protocol\r | |
234 | //\r | |
235 | Status = gBS->OpenProtocol (\r | |
236 | ControllerHandle,\r | |
237 | &gEfiIp4ServiceBindingProtocolGuid,\r | |
238 | NULL,\r | |
239 | This->DriverBindingHandle,\r | |
240 | ControllerHandle,\r | |
241 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
242 | );\r | |
243 | \r | |
244 | return Status;\r | |
245 | }\r | |
246 | \r | |
247 | \r | |
248 | /**\r | |
249 | Start this driver on ControllerHandle.\r | |
250 | \r | |
251 | @param This Protocol instance pointer.\r | |
252 | @param ControllerHandle Handle of device to bind driver to.\r | |
253 | @param RemainingDevicePath Optional parameter use to pick a specific child\r | |
254 | device to start.\r | |
255 | \r | |
256 | @retval EFI_SUCCESS The driver is added to ControllerHandle.\r | |
257 | @retval EFI_OUT_OF_RESOURCES There are not enough resources to start the\r | |
258 | driver.\r | |
259 | @retval other The driver cannot be added to ControllerHandle.\r | |
260 | \r | |
261 | **/\r | |
262 | EFI_STATUS\r | |
263 | EFIAPI\r | |
264 | Tcp4DriverBindingStart (\r | |
265 | IN EFI_DRIVER_BINDING_PROTOCOL * This,\r | |
266 | IN EFI_HANDLE ControllerHandle,\r | |
267 | IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL\r | |
268 | )\r | |
269 | {\r | |
270 | EFI_STATUS Status;\r | |
271 | TCP4_SERVICE_DATA *TcpServiceData;\r | |
272 | IP_IO_OPEN_DATA OpenData;\r | |
273 | \r | |
274 | TcpServiceData = AllocateZeroPool (sizeof (TCP4_SERVICE_DATA));\r | |
275 | \r | |
276 | if (NULL == TcpServiceData) {\r | |
277 | DEBUG ((EFI_D_ERROR, "Tcp4DriverBindingStart: Have no enough"\r | |
278 | " resource to create a Tcp Servcie Data!\n"));\r | |
279 | \r | |
280 | return EFI_OUT_OF_RESOURCES;\r | |
281 | }\r | |
282 | \r | |
283 | //\r | |
284 | // Create a new IP IO to Consume it\r | |
285 | //\r | |
286 | TcpServiceData->IpIo = IpIoCreate (This->DriverBindingHandle, ControllerHandle);\r | |
287 | if (NULL == TcpServiceData->IpIo) {\r | |
288 | \r | |
289 | DEBUG ((EFI_D_ERROR, "Tcp4DriverBindingStart: Have no enough"\r | |
290 | " resource to create an Ip Io!\n"));\r | |
291 | \r | |
292 | Status = EFI_OUT_OF_RESOURCES;\r | |
293 | goto ON_ERROR;\r | |
294 | }\r | |
295 | \r | |
296 | //\r | |
297 | // Configure and start IpIo.\r | |
298 | //\r | |
299 | ZeroMem (&OpenData, sizeof (IP_IO_OPEN_DATA));\r | |
300 | \r | |
301 | CopyMem (&OpenData.IpConfigData, &mIpIoDefaultIpConfigData, sizeof (OpenData.IpConfigData));\r | |
302 | OpenData.IpConfigData.DefaultProtocol = EFI_IP_PROTO_TCP;\r | |
303 | \r | |
304 | OpenData.PktRcvdNotify = Tcp4RxCallback;\r | |
305 | Status = IpIoOpen (TcpServiceData->IpIo, &OpenData);\r | |
306 | \r | |
307 | if (EFI_ERROR (Status)) {\r | |
308 | goto ON_ERROR;\r | |
309 | }\r | |
310 | \r | |
311 | //\r | |
312 | // Create the timer event used by TCP driver\r | |
313 | //\r | |
314 | Status = Tcp4CreateTimer ();\r | |
315 | if (EFI_ERROR (Status)) {\r | |
316 | \r | |
317 | DEBUG ((EFI_D_ERROR, "Tcp4DriverBindingStart: Create TcpTimer"\r | |
318 | " Event failed with %r\n", Status));\r | |
319 | \r | |
320 | goto ON_ERROR;\r | |
321 | }\r | |
322 | \r | |
323 | //\r | |
324 | // Install the Tcp4ServiceBinding Protocol on the\r | |
325 | // controller handle\r | |
326 | //\r | |
327 | TcpServiceData->Tcp4ServiceBinding = mTcp4ServiceBinding;\r | |
328 | \r | |
329 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
330 | &ControllerHandle,\r | |
331 | &gEfiTcp4ServiceBindingProtocolGuid,\r | |
332 | &TcpServiceData->Tcp4ServiceBinding,\r | |
333 | NULL\r | |
334 | );\r | |
335 | if (EFI_ERROR (Status)) {\r | |
336 | \r | |
337 | DEBUG ((EFI_D_ERROR, "Tcp4DriverBindingStart: Install Tcp4 Service Binding"\r | |
338 | " Protocol failed for %r\n", Status));\r | |
339 | \r | |
340 | Tcp4DestroyTimer ();\r | |
341 | goto ON_ERROR;\r | |
342 | }\r | |
343 | \r | |
344 | //\r | |
345 | // Initialize member in TcpServiceData\r | |
346 | //\r | |
347 | TcpServiceData->ControllerHandle = ControllerHandle;\r | |
348 | TcpServiceData->Signature = TCP4_DRIVER_SIGNATURE;\r | |
349 | TcpServiceData->DriverBindingHandle = This->DriverBindingHandle;\r | |
350 | \r | |
351 | InitializeListHead (&TcpServiceData->SocketList);\r | |
352 | \r | |
353 | TcpSetVariableData (TcpServiceData);\r | |
354 | \r | |
355 | return EFI_SUCCESS;\r | |
356 | \r | |
357 | ON_ERROR:\r | |
358 | \r | |
359 | if (TcpServiceData->IpIo != NULL) {\r | |
360 | IpIoDestroy (TcpServiceData->IpIo);\r | |
361 | }\r | |
362 | \r | |
363 | gBS->FreePool (TcpServiceData);\r | |
364 | \r | |
365 | return Status;\r | |
366 | }\r | |
367 | \r | |
368 | \r | |
369 | /**\r | |
370 | Stop this driver on ControllerHandle.\r | |
371 | \r | |
372 | @param This Protocol instance pointer.\r | |
373 | @param ControllerHandle Handle of device to stop driver on.\r | |
374 | @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number\r | |
375 | of children is zero stop the entire bus driver.\r | |
376 | @param ChildHandleBuffer List of Child Handles to Stop.\r | |
377 | \r | |
378 | @retval EFI_SUCCESS This driver is removed from ControllerHandle.\r | |
379 | @retval other This driver is not removed from ControllerHandle.\r | |
380 | \r | |
381 | **/\r | |
382 | EFI_STATUS\r | |
383 | EFIAPI\r | |
384 | Tcp4DriverBindingStop (\r | |
385 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
386 | IN EFI_HANDLE ControllerHandle,\r | |
387 | IN UINTN NumberOfChildren,\r | |
388 | IN EFI_HANDLE *ChildHandleBuffer\r | |
389 | )\r | |
390 | {\r | |
391 | EFI_STATUS Status;\r | |
392 | EFI_HANDLE NicHandle;\r | |
393 | EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;\r | |
394 | TCP4_SERVICE_DATA *TcpServiceData;\r | |
395 | SOCKET *Sock;\r | |
396 | \r | |
397 | // Find the NicHandle where Tcp4 ServiceBinding Protocol is installed.\r | |
398 | //\r | |
399 | NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiIp4ProtocolGuid);\r | |
400 | if (NicHandle == NULL) {\r | |
401 | return EFI_DEVICE_ERROR;\r | |
402 | }\r | |
403 | \r | |
404 | //\r | |
405 | // Retrieve the TCP driver Data Structure\r | |
406 | //\r | |
407 | Status = gBS->OpenProtocol (\r | |
408 | NicHandle,\r | |
409 | &gEfiTcp4ServiceBindingProtocolGuid,\r | |
410 | (VOID **) &ServiceBinding,\r | |
411 | This->DriverBindingHandle,\r | |
412 | ControllerHandle,\r | |
413 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
414 | );\r | |
415 | if (EFI_ERROR (Status)) {\r | |
416 | \r | |
417 | DEBUG ((EFI_D_ERROR, "Tcp4DriverBindingStop: Locate Tcp4 Service "\r | |
418 | " Binding Protocol failed with %r\n", Status));\r | |
419 | \r | |
420 | return EFI_DEVICE_ERROR;\r | |
421 | }\r | |
422 | \r | |
423 | TcpServiceData = TCP4_FROM_THIS (ServiceBinding);\r | |
424 | \r | |
425 | if (NumberOfChildren == 0) {\r | |
426 | //\r | |
427 | // Uninstall TCP servicebinding protocol\r | |
428 | //\r | |
429 | gBS->UninstallMultipleProtocolInterfaces (\r | |
430 | NicHandle,\r | |
431 | &gEfiTcp4ServiceBindingProtocolGuid,\r | |
432 | ServiceBinding,\r | |
433 | NULL\r | |
434 | );\r | |
435 | \r | |
436 | //\r | |
437 | // Destroy the IpIO consumed by TCP driver\r | |
438 | //\r | |
439 | IpIoDestroy (TcpServiceData->IpIo);\r | |
440 | \r | |
441 | //\r | |
442 | // Destroy the heartbeat timer.\r | |
443 | //\r | |
444 | Tcp4DestroyTimer ();\r | |
445 | \r | |
446 | //\r | |
447 | // Clear the variable.\r | |
448 | //\r | |
449 | TcpClearVariableData (TcpServiceData);\r | |
450 | \r | |
451 | //\r | |
452 | // Release the TCP service data\r | |
453 | //\r | |
454 | gBS->FreePool (TcpServiceData);\r | |
455 | } else {\r | |
456 | \r | |
457 | while (!IsListEmpty (&TcpServiceData->SocketList)) {\r | |
458 | Sock = NET_LIST_HEAD (&TcpServiceData->SocketList, SOCKET, Link);\r | |
459 | \r | |
460 | ServiceBinding->DestroyChild (ServiceBinding, Sock->SockHandle);\r | |
461 | }\r | |
462 | }\r | |
463 | \r | |
464 | return Status;\r | |
465 | }\r | |
466 | \r | |
467 | EFI_STATUS\r | |
468 | Tcp4CreateSocketCallback (\r | |
469 | IN SOCKET *This,\r | |
470 | IN VOID *Context\r | |
471 | )\r | |
472 | {\r | |
473 | EFI_STATUS Status;\r | |
474 | TCP4_SERVICE_DATA *TcpServiceData;\r | |
475 | EFI_IP4_PROTOCOL *Ip4;\r | |
476 | \r | |
477 | TcpServiceData = ((TCP4_PROTO_DATA *) This->ProtoReserved)->TcpService;\r | |
478 | \r | |
479 | //\r | |
480 | // Open the default Ip4 protocol of IP_IO BY_DRIVER.\r | |
481 | //\r | |
482 | Status = gBS->OpenProtocol (\r | |
483 | TcpServiceData->IpIo->ChildHandle,\r | |
484 | &gEfiIp4ProtocolGuid,\r | |
485 | (VOID **) &Ip4,\r | |
486 | TcpServiceData->DriverBindingHandle,\r | |
487 | This->SockHandle,\r | |
488 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
489 | );\r | |
490 | if (EFI_ERROR (Status)) {\r | |
491 | return Status;\r | |
492 | }\r | |
493 | \r | |
494 | //\r | |
495 | // Open the device path on the handle where service binding resides on.\r | |
496 | //\r | |
497 | Status = gBS->OpenProtocol (\r | |
498 | TcpServiceData->ControllerHandle,\r | |
499 | &gEfiDevicePathProtocolGuid,\r | |
500 | (VOID **) &This->ParentDevicePath,\r | |
501 | TcpServiceData->DriverBindingHandle,\r | |
502 | This->SockHandle,\r | |
503 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
504 | );\r | |
505 | if (EFI_ERROR (Status)) {\r | |
506 | gBS->CloseProtocol (\r | |
507 | TcpServiceData->IpIo->ChildHandle,\r | |
508 | &gEfiIp4ProtocolGuid,\r | |
509 | TcpServiceData->DriverBindingHandle,\r | |
510 | This->SockHandle\r | |
511 | );\r | |
512 | } else {\r | |
513 | //\r | |
514 | // Insert this socket into the SocketList.\r | |
515 | //\r | |
516 | InsertTailList (&TcpServiceData->SocketList, &This->Link);\r | |
517 | }\r | |
518 | \r | |
519 | return Status;\r | |
520 | }\r | |
521 | \r | |
522 | VOID\r | |
523 | Tcp4DestroySocketCallback (\r | |
524 | IN SOCKET *This,\r | |
525 | IN VOID *Context\r | |
526 | )\r | |
527 | {\r | |
528 | TCP4_SERVICE_DATA *TcpServiceData;\r | |
529 | \r | |
530 | TcpServiceData = ((TCP4_PROTO_DATA *) This->ProtoReserved)->TcpService;\r | |
531 | \r | |
532 | //\r | |
533 | // Remove this node from the list.\r | |
534 | //\r | |
535 | RemoveEntryList (&This->Link);\r | |
536 | \r | |
537 | //\r | |
538 | // Close the device path protocol\r | |
539 | //\r | |
540 | gBS->CloseProtocol (\r | |
541 | TcpServiceData->ControllerHandle,\r | |
542 | &gEfiDevicePathProtocolGuid,\r | |
543 | TcpServiceData->DriverBindingHandle,\r | |
544 | This->SockHandle\r | |
545 | );\r | |
546 | \r | |
547 | //\r | |
548 | // Close the Ip4 protocol.\r | |
549 | //\r | |
550 | gBS->CloseProtocol (\r | |
551 | TcpServiceData->IpIo->ChildHandle,\r | |
552 | &gEfiIp4ProtocolGuid,\r | |
553 | TcpServiceData->DriverBindingHandle,\r | |
554 | This->SockHandle\r | |
555 | );\r | |
556 | }\r | |
557 | \r | |
558 | /**\r | |
559 | Creates a child handle with a set of TCP4 services.\r | |
560 | \r | |
561 | @param This Protocol instance pointer.\r | |
562 | @param ChildHandle Pointer to the handle of the child to create. If\r | |
563 | it is NULL, then a new handle is created. If it is\r | |
564 | not NULL, then the I/O services are added to the\r | |
565 | existing child handle.\r | |
566 | \r | |
567 | @retval EFI_SUCCESS The child handle is created.\r | |
568 | @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r | |
569 | @retval EFI_OUT_OF_RESOURCES There are not enough resources to create the\r | |
570 | child.\r | |
571 | \r | |
572 | **/\r | |
573 | EFI_STATUS\r | |
574 | EFIAPI\r | |
575 | Tcp4ServiceBindingCreateChild (\r | |
576 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
577 | IN EFI_HANDLE *ChildHandle\r | |
578 | )\r | |
579 | {\r | |
580 | SOCKET *Sock;\r | |
581 | TCP4_SERVICE_DATA *TcpServiceData;\r | |
582 | TCP4_PROTO_DATA TcpProto;\r | |
583 | EFI_STATUS Status;\r | |
584 | EFI_TPL OldTpl;\r | |
585 | \r | |
586 | if (NULL == This || NULL == ChildHandle) {\r | |
587 | return EFI_INVALID_PARAMETER;\r | |
588 | }\r | |
589 | \r | |
590 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
591 | Status = EFI_SUCCESS;\r | |
592 | TcpServiceData = TCP4_FROM_THIS (This);\r | |
593 | TcpProto.TcpService = TcpServiceData;\r | |
594 | TcpProto.TcpPcb = NULL;\r | |
595 | \r | |
596 | //\r | |
597 | // Create a tcp instance with defualt Tcp default\r | |
598 | // sock init data and TcpProto\r | |
599 | //\r | |
600 | mTcp4DefaultSockData.ProtoData = &TcpProto;\r | |
601 | mTcp4DefaultSockData.DataSize = sizeof (TCP4_PROTO_DATA);\r | |
602 | mTcp4DefaultSockData.DriverBinding = TcpServiceData->DriverBindingHandle;\r | |
603 | \r | |
604 | Sock = SockCreateChild (&mTcp4DefaultSockData);\r | |
605 | if (NULL == Sock) {\r | |
606 | DEBUG ((EFI_D_ERROR, "Tcp4DriverBindingCreateChild: "\r | |
607 | "No resource to create a Tcp Child\n"));\r | |
608 | \r | |
609 | Status = EFI_OUT_OF_RESOURCES;\r | |
610 | } else {\r | |
611 | *ChildHandle = Sock->SockHandle;\r | |
612 | }\r | |
613 | \r | |
614 | gBS->RestoreTPL (OldTpl);\r | |
615 | return Status;\r | |
616 | }\r | |
617 | \r | |
618 | \r | |
619 | /**\r | |
620 | Destroys a child handle with a set of UDP4 services.\r | |
621 | \r | |
622 | @param This Protocol instance pointer.\r | |
623 | @param ChildHandle Handle of the child to be destroyed.\r | |
624 | \r | |
625 | @retval EFI_SUCCESS The TCP4 services are removed from the child\r | |
626 | handle.\r | |
627 | @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r | |
628 | @retval other The child handle is not destroyed.\r | |
629 | \r | |
630 | **/\r | |
631 | EFI_STATUS\r | |
632 | EFIAPI\r | |
633 | Tcp4ServiceBindingDestroyChild (\r | |
634 | IN EFI_SERVICE_BINDING_PROTOCOL *This,\r | |
635 | IN EFI_HANDLE ChildHandle\r | |
636 | )\r | |
637 | {\r | |
638 | EFI_STATUS Status;\r | |
639 | EFI_TCP4_PROTOCOL *Tcp4;\r | |
640 | SOCKET *Sock;\r | |
641 | EFI_TPL OldTpl;\r | |
642 | \r | |
643 | if (NULL == This || NULL == ChildHandle) {\r | |
644 | return EFI_INVALID_PARAMETER;\r | |
645 | }\r | |
646 | \r | |
647 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
648 | \r | |
649 | //\r | |
650 | // retrieve the Tcp4 protocol from ChildHandle\r | |
651 | //\r | |
652 | Status = gBS->OpenProtocol (\r | |
653 | ChildHandle,\r | |
654 | &gEfiTcp4ProtocolGuid,\r | |
655 | (VOID **) &Tcp4,\r | |
656 | mTcp4DriverBinding.DriverBindingHandle,\r | |
657 | ChildHandle,\r | |
658 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
659 | );\r | |
660 | if (EFI_ERROR (Status)) {\r | |
661 | Status = EFI_UNSUPPORTED;\r | |
662 | } else {\r | |
663 | //\r | |
664 | // destroy this sock and related Tcp protocol control\r | |
665 | // block\r | |
666 | //\r | |
667 | Sock = SOCK_FROM_THIS (Tcp4);\r | |
668 | \r | |
669 | SockDestroyChild (Sock);\r | |
670 | }\r | |
671 | \r | |
672 | gBS->RestoreTPL (OldTpl);\r | |
673 | return Status;\r | |
674 | }\r | |
675 | \r |