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8a67d61d | 1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2005 - 2006, Intel Corporation\r | |
4 | All rights reserved. This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | Tcp4Misc.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Misc support routines for tcp.\r | |
19 | \r | |
20 | \r | |
21 | **/\r | |
22 | \r | |
23 | \r | |
24 | #include "Tcp4Main.h"\r | |
25 | \r | |
e5e12de7 | 26 | #include <Library/DevicePathLib.h>\r |
27 | \r | |
e48e37fc | 28 | LIST_ENTRY mTcpRunQue = {\r |
8a67d61d | 29 | &mTcpRunQue,\r |
30 | &mTcpRunQue\r | |
31 | };\r | |
32 | \r | |
e48e37fc | 33 | LIST_ENTRY mTcpListenQue = {\r |
8a67d61d | 34 | &mTcpListenQue,\r |
35 | &mTcpListenQue\r | |
36 | };\r | |
37 | \r | |
38 | TCP_SEQNO mTcpGlobalIss = 0x4d7e980b;\r | |
39 | \r | |
84b5c78e | 40 | CHAR16 *mTcpStateName[] = {\r |
8a67d61d | 41 | L"TCP_CLOSED",\r |
42 | L"TCP_LISTEN",\r | |
43 | L"TCP_SYN_SENT",\r | |
44 | L"TCP_SYN_RCVD",\r | |
45 | L"TCP_ESTABLISHED",\r | |
46 | L"TCP_FIN_WAIT_1",\r | |
47 | L"TCP_FIN_WAIT_2",\r | |
48 | L"TCP_CLOSING",\r | |
49 | L"TCP_TIME_WAIT",\r | |
50 | L"TCP_CLOSE_WAIT",\r | |
51 | L"TCP_LAST_ACK"\r | |
52 | };\r | |
53 | \r | |
54 | \r | |
55 | /**\r | |
56 | Initialize the Tcb local related members.\r | |
57 | \r | |
58 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
59 | \r | |
60 | @return None\r | |
61 | \r | |
62 | **/\r | |
63 | VOID\r | |
64 | TcpInitTcbLocal (\r | |
65 | IN TCP_CB *Tcb\r | |
66 | )\r | |
67 | {\r | |
68 | //\r | |
69 | // Compute the checksum of the fixed parts of pseudo header\r | |
70 | //\r | |
71 | Tcb->HeadSum = NetPseudoHeadChecksum (\r | |
72 | Tcb->LocalEnd.Ip,\r | |
73 | Tcb->RemoteEnd.Ip,\r | |
74 | 0x06,\r | |
75 | 0\r | |
76 | );\r | |
77 | \r | |
78 | Tcb->Iss = TcpGetIss ();\r | |
79 | Tcb->SndUna = Tcb->Iss;\r | |
80 | Tcb->SndNxt = Tcb->Iss;\r | |
81 | \r | |
82 | Tcb->SndWl2 = Tcb->Iss;\r | |
83 | Tcb->SndWnd = 536;\r | |
84 | \r | |
85 | Tcb->RcvWnd = GET_RCV_BUFFSIZE (Tcb->Sk);\r | |
86 | \r | |
87 | //\r | |
88 | // Fisrt window size is never scaled\r | |
89 | //\r | |
90 | Tcb->RcvWndScale = 0;\r | |
91 | }\r | |
92 | \r | |
93 | \r | |
94 | /**\r | |
95 | Initialize the peer related members.\r | |
96 | \r | |
97 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
98 | @param Seg Pointer to the segment that contains the peer's\r | |
99 | intial info.\r | |
100 | @param Opt Pointer to the options announced by the peer.\r | |
101 | \r | |
102 | @return None\r | |
103 | \r | |
104 | **/\r | |
105 | VOID\r | |
106 | TcpInitTcbPeer (\r | |
107 | IN TCP_CB *Tcb,\r | |
108 | IN TCP_SEG *Seg,\r | |
109 | IN TCP_OPTION *Opt\r | |
110 | )\r | |
111 | {\r | |
112 | UINT16 RcvMss;\r | |
113 | \r | |
114 | ASSERT (Tcb && Seg && Opt);\r | |
115 | ASSERT (TCP_FLG_ON (Seg->Flag, TCP_FLG_SYN));\r | |
116 | \r | |
117 | Tcb->SndWnd = Seg->Wnd;\r | |
118 | Tcb->SndWndMax = Tcb->SndWnd;\r | |
119 | Tcb->SndWl1 = Seg->Seq;\r | |
120 | \r | |
121 | if (TCP_FLG_ON (Seg->Flag, TCP_FLG_ACK)) {\r | |
122 | Tcb->SndWl2 = Seg->Ack;\r | |
123 | } else {\r | |
124 | Tcb->SndWl2 = Tcb->Iss + 1;\r | |
125 | }\r | |
126 | \r | |
127 | if (TCP_FLG_ON (Opt->Flag, TCP_OPTION_RCVD_MSS)) {\r | |
36ee91ca | 128 | Tcb->SndMss = (UINT16) MAX (64, Opt->Mss);\r |
8a67d61d | 129 | \r |
130 | RcvMss = TcpGetRcvMss (Tcb->Sk);\r | |
131 | if (Tcb->SndMss > RcvMss) {\r | |
132 | Tcb->SndMss = RcvMss;\r | |
133 | }\r | |
134 | \r | |
135 | } else {\r | |
136 | //\r | |
137 | // One end doesn't support MSS option, use default.\r | |
138 | //\r | |
139 | Tcb->RcvMss = 536;\r | |
140 | }\r | |
141 | \r | |
142 | Tcb->CWnd = Tcb->SndMss;\r | |
143 | \r | |
144 | Tcb->Irs = Seg->Seq;\r | |
145 | Tcb->RcvNxt = Tcb->Irs + 1;\r | |
146 | \r | |
147 | Tcb->RcvWl2 = Tcb->RcvNxt;\r | |
148 | \r | |
149 | if (TCP_FLG_ON (Opt->Flag, TCP_OPTION_RCVD_WS) &&\r | |
150 | !TCP_FLG_ON (Tcb->CtrlFlag, TCP_CTRL_NO_WS)) {\r | |
151 | \r | |
152 | Tcb->SndWndScale = Opt->WndScale;\r | |
153 | \r | |
154 | Tcb->RcvWndScale = TcpComputeScale (Tcb);\r | |
155 | TCP_SET_FLG (Tcb->CtrlFlag, TCP_CTRL_RCVD_WS);\r | |
156 | \r | |
157 | } else {\r | |
158 | //\r | |
159 | // One end doesn't support window scale option. use zero.\r | |
160 | //\r | |
161 | Tcb->RcvWndScale = 0;\r | |
162 | }\r | |
163 | \r | |
164 | if (TCP_FLG_ON (Opt->Flag, TCP_OPTION_RCVD_TS) &&\r | |
165 | !TCP_FLG_ON (Tcb->CtrlFlag, TCP_CTRL_NO_TS)) {\r | |
166 | \r | |
167 | TCP_SET_FLG (Tcb->CtrlFlag, TCP_CTRL_SND_TS);\r | |
168 | TCP_SET_FLG (Tcb->CtrlFlag, TCP_CTRL_RCVD_TS);\r | |
169 | \r | |
170 | //\r | |
171 | // Compute the effective SndMss per RFC1122\r | |
172 | // section 4.2.2.6. If timestamp option is\r | |
173 | // enabled, it will always occupy 12 bytes.\r | |
174 | //\r | |
175 | Tcb->SndMss -= TCP_OPTION_TS_ALIGNED_LEN;\r | |
176 | }\r | |
177 | }\r | |
178 | \r | |
179 | \r | |
180 | /**\r | |
181 | Locate a listen TCB that matchs the Local and Remote.\r | |
182 | \r | |
183 | @param Local Pointer to the local (IP, Port).\r | |
184 | @param Remote Pointer to the remote (IP, Port).\r | |
185 | \r | |
186 | @return Pointer to the TCP_CB with the least number of wildcard, if NULL no match is found.\r | |
187 | \r | |
188 | **/\r | |
8a67d61d | 189 | TCP_CB *\r |
190 | TcpLocateListenTcb (\r | |
191 | IN TCP_PEER *Local,\r | |
192 | IN TCP_PEER *Remote\r | |
193 | )\r | |
194 | {\r | |
e48e37fc | 195 | LIST_ENTRY *Entry;\r |
8a67d61d | 196 | TCP_CB *Node;\r |
197 | TCP_CB *Match;\r | |
198 | INTN Last;\r | |
199 | INTN Cur;\r | |
200 | \r | |
201 | Last = 4;\r | |
202 | Match = NULL;\r | |
203 | \r | |
204 | NET_LIST_FOR_EACH (Entry, &mTcpListenQue) {\r | |
205 | Node = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
206 | \r | |
207 | if ((Local->Port != Node->LocalEnd.Port) ||\r | |
208 | !TCP_PEER_MATCH (Remote, &Node->RemoteEnd) ||\r | |
209 | !TCP_PEER_MATCH (Local, &Node->LocalEnd)\r | |
210 | ) {\r | |
211 | \r | |
212 | continue;\r | |
213 | }\r | |
214 | \r | |
215 | //\r | |
216 | // Compute the number of wildcard\r | |
217 | //\r | |
218 | Cur = 0;\r | |
219 | if (Node->RemoteEnd.Ip == 0) {\r | |
220 | Cur++;\r | |
221 | }\r | |
222 | \r | |
223 | if (Node->RemoteEnd.Port == 0) {\r | |
224 | Cur++;\r | |
225 | }\r | |
226 | \r | |
227 | if (Node->LocalEnd.Ip == 0) {\r | |
228 | Cur++;\r | |
229 | }\r | |
230 | \r | |
231 | if (Cur < Last) {\r | |
232 | if (Cur == 0) {\r | |
233 | return Node;\r | |
234 | }\r | |
235 | \r | |
236 | Last = Cur;\r | |
237 | Match = Node;\r | |
238 | }\r | |
239 | }\r | |
240 | \r | |
241 | return Match;\r | |
242 | }\r | |
243 | \r | |
244 | \r | |
245 | /**\r | |
246 | Try to find one Tcb whose <Ip, Port> equals to <IN Addr, IN Port>.\r | |
247 | \r | |
248 | @param Addr Pointer to the IP address needs to match.\r | |
249 | @param Port The port number needs to match.\r | |
250 | \r | |
251 | @return The Tcb which matches the <Addr Port> paire exists or not.\r | |
252 | \r | |
253 | **/\r | |
254 | BOOLEAN\r | |
255 | TcpFindTcbByPeer (\r | |
256 | IN EFI_IPv4_ADDRESS *Addr,\r | |
257 | IN TCP_PORTNO Port\r | |
258 | )\r | |
259 | {\r | |
260 | TCP_PORTNO LocalPort;\r | |
e48e37fc | 261 | LIST_ENTRY *Entry;\r |
8a67d61d | 262 | TCP_CB *Tcb;\r |
263 | \r | |
264 | ASSERT ((Addr != NULL) && (Port != 0));\r | |
265 | \r | |
266 | LocalPort = HTONS (Port);\r | |
267 | \r | |
268 | NET_LIST_FOR_EACH (Entry, &mTcpListenQue) {\r | |
269 | Tcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
270 | \r | |
84b5c78e | 271 | if (EFI_IP4_EQUAL (Addr, &Tcb->LocalEnd.Ip) &&\r |
8a67d61d | 272 | (LocalPort == Tcb->LocalEnd.Port)) {\r |
273 | \r | |
274 | return TRUE;\r | |
275 | }\r | |
276 | }\r | |
277 | \r | |
278 | NET_LIST_FOR_EACH (Entry, &mTcpRunQue) {\r | |
279 | Tcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
280 | \r | |
84b5c78e | 281 | if (EFI_IP4_EQUAL (Addr, &Tcb->LocalEnd.Ip) &&\r |
8a67d61d | 282 | (LocalPort == Tcb->LocalEnd.Port)) {\r |
283 | \r | |
284 | return TRUE;\r | |
285 | }\r | |
286 | }\r | |
287 | \r | |
288 | return FALSE;\r | |
289 | }\r | |
290 | \r | |
291 | \r | |
292 | /**\r | |
293 | Locate the TCP_CB related to the socket pair.\r | |
294 | \r | |
295 | @param LocalPort The local port number.\r | |
296 | @param LocalIp The local IP address.\r | |
297 | @param RemotePort The remote port number.\r | |
298 | @param RemoteIp The remote IP address.\r | |
299 | @param Syn Whether to search the listen sockets, if TRUE, the\r | |
300 | listen sockets are searched.\r | |
301 | \r | |
302 | @return Pointer to the related TCP_CB, if NULL no match is found.\r | |
303 | \r | |
304 | **/\r | |
305 | TCP_CB *\r | |
306 | TcpLocateTcb (\r | |
307 | IN TCP_PORTNO LocalPort,\r | |
308 | IN UINT32 LocalIp,\r | |
309 | IN TCP_PORTNO RemotePort,\r | |
310 | IN UINT32 RemoteIp,\r | |
311 | IN BOOLEAN Syn\r | |
312 | )\r | |
313 | {\r | |
314 | TCP_PEER Local;\r | |
315 | TCP_PEER Remote;\r | |
e48e37fc | 316 | LIST_ENTRY *Entry;\r |
8a67d61d | 317 | TCP_CB *Tcb;\r |
318 | \r | |
319 | Local.Port = LocalPort;\r | |
320 | Local.Ip = LocalIp;\r | |
321 | \r | |
322 | Remote.Port = RemotePort;\r | |
323 | Remote.Ip = RemoteIp;\r | |
324 | \r | |
325 | //\r | |
326 | // First check for exact match.\r | |
327 | //\r | |
328 | NET_LIST_FOR_EACH (Entry, &mTcpRunQue) {\r | |
329 | Tcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
330 | \r | |
331 | if (TCP_PEER_EQUAL (&Remote, &Tcb->RemoteEnd) &&\r | |
332 | TCP_PEER_EQUAL (&Local, &Tcb->LocalEnd)) {\r | |
333 | \r | |
e48e37fc | 334 | RemoveEntryList (&Tcb->List);\r |
335 | InsertHeadList (&mTcpRunQue, &Tcb->List);\r | |
8a67d61d | 336 | \r |
337 | return Tcb;\r | |
338 | }\r | |
339 | }\r | |
340 | \r | |
341 | //\r | |
342 | // Only check listen queue when SYN flag is on\r | |
343 | //\r | |
344 | if (Syn) {\r | |
345 | return TcpLocateListenTcb (&Local, &Remote);\r | |
346 | }\r | |
347 | \r | |
348 | return NULL;\r | |
349 | }\r | |
350 | \r | |
351 | \r | |
352 | /**\r | |
353 | Insert a Tcb into the proper queue.\r | |
354 | \r | |
355 | @param Tcb Pointer to the TCP_CB to be inserted.\r | |
356 | \r | |
357 | @retval 0 The Tcb is inserted successfully.\r | |
358 | @retval -1 Error condition occurred.\r | |
359 | \r | |
360 | **/\r | |
361 | INTN\r | |
362 | TcpInsertTcb (\r | |
363 | IN TCP_CB *Tcb\r | |
364 | )\r | |
365 | {\r | |
e48e37fc | 366 | LIST_ENTRY *Entry;\r |
367 | LIST_ENTRY *Head;\r | |
8a67d61d | 368 | TCP_CB *Node;\r |
369 | TCP4_PROTO_DATA *TcpProto;\r | |
370 | \r | |
371 | ASSERT (\r | |
372 | Tcb &&\r | |
373 | (\r | |
374 | (Tcb->State == TCP_LISTEN) ||\r | |
375 | (Tcb->State == TCP_SYN_SENT) ||\r | |
376 | (Tcb->State == TCP_SYN_RCVD) ||\r | |
377 | (Tcb->State == TCP_CLOSED)\r | |
378 | )\r | |
379 | );\r | |
380 | \r | |
381 | if (Tcb->LocalEnd.Port == 0) {\r | |
382 | return -1;\r | |
383 | }\r | |
384 | \r | |
385 | Head = &mTcpRunQue;\r | |
386 | \r | |
387 | if (Tcb->State == TCP_LISTEN) {\r | |
388 | Head = &mTcpListenQue;\r | |
389 | }\r | |
390 | \r | |
391 | //\r | |
392 | // Check that Tcb isn't already on the list.\r | |
393 | //\r | |
394 | NET_LIST_FOR_EACH (Entry, Head) {\r | |
395 | Node = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
396 | \r | |
397 | if (TCP_PEER_EQUAL (&Tcb->LocalEnd, &Node->LocalEnd) &&\r | |
398 | TCP_PEER_EQUAL (&Tcb->RemoteEnd, &Node->RemoteEnd)) {\r | |
399 | \r | |
400 | return -1;\r | |
401 | }\r | |
402 | }\r | |
403 | \r | |
e48e37fc | 404 | InsertHeadList (Head, &Tcb->List);\r |
8a67d61d | 405 | \r |
406 | TcpProto = (TCP4_PROTO_DATA *) Tcb->Sk->ProtoReserved;\r | |
407 | TcpSetVariableData (TcpProto->TcpService);\r | |
408 | \r | |
409 | return 0;\r | |
410 | }\r | |
411 | \r | |
412 | \r | |
413 | /**\r | |
414 | Clone a TCP_CB from Tcb.\r | |
415 | \r | |
416 | @param Tcb Pointer to the TCP_CB to be cloned.\r | |
417 | \r | |
418 | @return Pointer to the new cloned TCP_CB, if NULL error condition occurred.\r | |
419 | \r | |
420 | **/\r | |
421 | TCP_CB *\r | |
422 | TcpCloneTcb (\r | |
423 | IN TCP_CB *Tcb\r | |
424 | )\r | |
425 | {\r | |
426 | TCP_CB *Clone;\r | |
427 | \r | |
e48e37fc | 428 | Clone = AllocatePool (sizeof (TCP_CB));\r |
8a67d61d | 429 | \r |
430 | if (Clone == NULL) {\r | |
431 | return NULL;\r | |
432 | \r | |
433 | }\r | |
434 | \r | |
e48e37fc | 435 | CopyMem (Clone, Tcb, sizeof (TCP_CB));\r |
8a67d61d | 436 | \r |
437 | //\r | |
438 | // Increate the reference count of the shared IpInfo.\r | |
439 | //\r | |
440 | NET_GET_REF (Tcb->IpInfo);\r | |
441 | \r | |
e48e37fc | 442 | InitializeListHead (&Clone->List);\r |
443 | InitializeListHead (&Clone->SndQue);\r | |
444 | InitializeListHead (&Clone->RcvQue);\r | |
8a67d61d | 445 | \r |
446 | Clone->Sk = SockClone (Tcb->Sk);\r | |
447 | if (Clone->Sk == NULL) {\r | |
e48e37fc | 448 | DEBUG ((EFI_D_ERROR, "TcpCloneTcb: failed to clone a sock\n"));\r |
449 | gBS->FreePool (Clone);\r | |
8a67d61d | 450 | return NULL;\r |
451 | }\r | |
452 | \r | |
453 | ((TCP4_PROTO_DATA *) (Clone->Sk->ProtoReserved))->TcpPcb = Clone;\r | |
454 | \r | |
455 | return Clone;\r | |
456 | }\r | |
457 | \r | |
458 | \r | |
459 | /**\r | |
460 | Compute an ISS to be used by a new connection.\r | |
461 | \r | |
462 | None\r | |
463 | \r | |
464 | @return The result ISS.\r | |
465 | \r | |
466 | **/\r | |
467 | TCP_SEQNO\r | |
468 | TcpGetIss (\r | |
469 | VOID\r | |
470 | )\r | |
471 | {\r | |
472 | mTcpGlobalIss += 2048;\r | |
473 | return mTcpGlobalIss;\r | |
474 | }\r | |
475 | \r | |
476 | \r | |
477 | /**\r | |
478 | Get the local mss.\r | |
479 | \r | |
480 | None\r | |
481 | \r | |
482 | @return The mss size.\r | |
483 | \r | |
484 | **/\r | |
485 | UINT16\r | |
486 | TcpGetRcvMss (\r | |
487 | IN SOCKET *Sock\r | |
488 | )\r | |
489 | {\r | |
490 | EFI_SIMPLE_NETWORK_MODE SnpMode;\r | |
491 | TCP4_PROTO_DATA *TcpProto;\r | |
492 | EFI_IP4_PROTOCOL *Ip;\r | |
493 | \r | |
494 | ASSERT (Sock);\r | |
495 | \r | |
496 | TcpProto = (TCP4_PROTO_DATA *) Sock->ProtoReserved;\r | |
497 | Ip = TcpProto->TcpService->IpIo->Ip;\r | |
498 | ASSERT (Ip);\r | |
499 | \r | |
500 | Ip->GetModeData (Ip, NULL, NULL, &SnpMode);\r | |
501 | \r | |
502 | return (UINT16) (SnpMode.MaxPacketSize - 40);\r | |
503 | }\r | |
504 | \r | |
505 | \r | |
506 | /**\r | |
507 | Set the Tcb's state.\r | |
508 | \r | |
509 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
510 | @param State The state to be set.\r | |
511 | \r | |
512 | @return None\r | |
513 | \r | |
514 | **/\r | |
515 | VOID\r | |
516 | TcpSetState (\r | |
517 | IN TCP_CB *Tcb,\r | |
518 | IN UINT8 State\r | |
519 | )\r | |
520 | {\r | |
e48e37fc | 521 | DEBUG (\r |
522 | (EFI_D_INFO,\r | |
0e549d5b | 523 | "Tcb (%p) state %s --> %s\n",\r |
8a67d61d | 524 | Tcb,\r |
525 | mTcpStateName[Tcb->State],\r | |
526 | mTcpStateName[State])\r | |
527 | );\r | |
528 | \r | |
529 | Tcb->State = State;\r | |
530 | \r | |
531 | switch (State) {\r | |
532 | case TCP_ESTABLISHED:\r | |
533 | \r | |
534 | SockConnEstablished (Tcb->Sk);\r | |
e5e12de7 | 535 | \r |
536 | if (Tcb->Parent != NULL) {\r | |
537 | //\r | |
538 | // A new connection is accepted by a listening socket, install\r | |
539 | // the device path.\r | |
540 | //\r | |
541 | TcpInstallDevicePath (Tcb->Sk);\r | |
542 | }\r | |
543 | \r | |
8a67d61d | 544 | break;\r |
545 | \r | |
546 | case TCP_CLOSED:\r | |
547 | \r | |
548 | SockConnClosed (Tcb->Sk);\r | |
549 | \r | |
550 | break;\r | |
551 | }\r | |
552 | }\r | |
553 | \r | |
554 | \r | |
555 | /**\r | |
556 | Compute the TCP segment's checksum.\r | |
557 | \r | |
558 | @param Nbuf Pointer to the buffer that contains the TCP\r | |
559 | segment.\r | |
560 | @param HeadSum The checksum value of the fixed part of pseudo\r | |
561 | header.\r | |
562 | \r | |
563 | @return The checksum value.\r | |
564 | \r | |
565 | **/\r | |
566 | UINT16\r | |
567 | TcpChecksum (\r | |
568 | IN NET_BUF *Nbuf,\r | |
569 | IN UINT16 HeadSum\r | |
570 | )\r | |
571 | {\r | |
572 | UINT16 Checksum;\r | |
573 | \r | |
574 | Checksum = NetbufChecksum (Nbuf);\r | |
575 | Checksum = NetAddChecksum (Checksum, HeadSum);\r | |
576 | \r | |
577 | Checksum = NetAddChecksum (\r | |
578 | Checksum,\r | |
579 | HTONS ((UINT16) Nbuf->TotalSize)\r | |
580 | );\r | |
581 | \r | |
4eb65aff | 582 | return (UINT16) ~Checksum;\r |
8a67d61d | 583 | }\r |
584 | \r | |
585 | \r | |
586 | /**\r | |
587 | Translate the information from the head of the received TCP\r | |
588 | segment Nbuf contains and fill it into a TCP_SEG structure.\r | |
589 | \r | |
590 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
591 | @param Nbuf Pointer to the buffer contains the TCP segment.\r | |
592 | \r | |
593 | @return Pointer to the TCP_SEG that contains the translated TCP head information.\r | |
594 | \r | |
595 | **/\r | |
596 | TCP_SEG *\r | |
597 | TcpFormatNetbuf (\r | |
598 | IN TCP_CB *Tcb,\r | |
599 | IN NET_BUF *Nbuf\r | |
600 | )\r | |
601 | {\r | |
602 | TCP_SEG *Seg;\r | |
603 | TCP_HEAD *Head;\r | |
604 | \r | |
605 | Seg = TCPSEG_NETBUF (Nbuf);\r | |
606 | Head = (TCP_HEAD *) NetbufGetByte (Nbuf, 0, NULL);\r | |
607 | Nbuf->Tcp = Head;\r | |
608 | \r | |
609 | Seg->Seq = NTOHL (Head->Seq);\r | |
610 | Seg->Ack = NTOHL (Head->Ack);\r | |
611 | Seg->End = Seg->Seq + (Nbuf->TotalSize - (Head->HeadLen << 2));\r | |
612 | \r | |
613 | Seg->Urg = NTOHS (Head->Urg);\r | |
614 | Seg->Wnd = (NTOHS (Head->Wnd) << Tcb->SndWndScale);\r | |
615 | Seg->Flag = Head->Flag;\r | |
616 | \r | |
617 | //\r | |
618 | // SYN and FIN flag occupy one sequence space each.\r | |
619 | //\r | |
620 | if (TCP_FLG_ON (Seg->Flag, TCP_FLG_SYN)) {\r | |
621 | //\r | |
622 | // RFC requires that initial window not be scaled\r | |
623 | //\r | |
624 | Seg->Wnd = NTOHS (Head->Wnd);\r | |
625 | Seg->End++;\r | |
626 | }\r | |
627 | \r | |
628 | if (TCP_FLG_ON (Seg->Flag, TCP_FLG_FIN)) {\r | |
629 | Seg->End++;\r | |
630 | }\r | |
631 | \r | |
632 | return Seg;\r | |
633 | }\r | |
634 | \r | |
635 | \r | |
636 | /**\r | |
637 | Reset the connection related with Tcb.\r | |
638 | \r | |
639 | @param Tcb Pointer to the TCP_CB of the connection to be\r | |
640 | reset.\r | |
641 | \r | |
642 | @return None\r | |
643 | \r | |
644 | **/\r | |
645 | VOID\r | |
646 | TcpResetConnection (\r | |
647 | IN TCP_CB *Tcb\r | |
648 | )\r | |
649 | {\r | |
650 | NET_BUF *Nbuf;\r | |
651 | TCP_HEAD *Nhead;\r | |
652 | \r | |
653 | Nbuf = NetbufAlloc (TCP_MAX_HEAD);\r | |
654 | \r | |
655 | if (Nbuf == NULL) {\r | |
656 | return ;\r | |
657 | }\r | |
658 | \r | |
659 | Nhead = (TCP_HEAD *) NetbufAllocSpace (\r | |
660 | Nbuf,\r | |
661 | sizeof (TCP_HEAD),\r | |
662 | NET_BUF_TAIL\r | |
663 | );\r | |
664 | \r | |
665 | ASSERT (Nhead != NULL);\r | |
666 | \r | |
667 | Nbuf->Tcp = Nhead;\r | |
668 | \r | |
669 | Nhead->Flag = TCP_FLG_RST;\r | |
670 | Nhead->Seq = HTONL (Tcb->SndNxt);\r | |
671 | Nhead->Ack = HTONL (Tcb->RcvNxt);\r | |
672 | Nhead->SrcPort = Tcb->LocalEnd.Port;\r | |
673 | Nhead->DstPort = Tcb->RemoteEnd.Port;\r | |
674 | Nhead->HeadLen = (sizeof (TCP_HEAD) >> 2);\r | |
675 | Nhead->Res = 0;\r | |
676 | Nhead->Wnd = HTONS (0xFFFF);\r | |
677 | Nhead->Checksum = 0;\r | |
678 | Nhead->Urg = 0;\r | |
679 | Nhead->Checksum = TcpChecksum (Nbuf, Tcb->HeadSum);\r | |
680 | \r | |
681 | TcpSendIpPacket (Tcb, Nbuf, Tcb->LocalEnd.Ip, Tcb->RemoteEnd.Ip);\r | |
682 | \r | |
683 | NetbufFree (Nbuf);\r | |
684 | }\r | |
685 | \r | |
686 | \r | |
687 | /**\r | |
688 | Initialize an active connection,\r | |
689 | \r | |
690 | @param Tcb Pointer to the TCP_CB that wants to initiate a\r | |
691 | connection.\r | |
692 | \r | |
693 | @return None\r | |
694 | \r | |
695 | **/\r | |
696 | VOID\r | |
697 | TcpOnAppConnect (\r | |
698 | IN TCP_CB *Tcb\r | |
699 | )\r | |
700 | {\r | |
701 | TcpInitTcbLocal (Tcb);\r | |
702 | TcpSetState (Tcb, TCP_SYN_SENT);\r | |
703 | \r | |
704 | TcpSetTimer (Tcb, TCP_TIMER_CONNECT, Tcb->ConnectTimeout);\r | |
705 | TcpToSendData (Tcb, 1);\r | |
706 | }\r | |
707 | \r | |
708 | \r | |
709 | /**\r | |
710 | Initiate the connection close procedure, called when\r | |
711 | applications want to close the connection.\r | |
712 | \r | |
713 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
714 | \r | |
715 | @return None.\r | |
716 | \r | |
717 | **/\r | |
718 | VOID\r | |
719 | TcpOnAppClose (\r | |
720 | IN TCP_CB *Tcb\r | |
721 | )\r | |
722 | {\r | |
723 | ASSERT (Tcb);\r | |
724 | \r | |
e48e37fc | 725 | if (!IsListEmpty (&Tcb->RcvQue) || GET_RCV_DATASIZE (Tcb->Sk)) {\r |
8a67d61d | 726 | \r |
e48e37fc | 727 | DEBUG ((EFI_D_WARN, "TcpOnAppClose: connection reset "\r |
0e549d5b | 728 | "because data is lost for TCB %p\n", Tcb));\r |
8a67d61d | 729 | \r |
730 | TcpResetConnection (Tcb);\r | |
731 | TcpClose (Tcb);\r | |
732 | return;\r | |
733 | }\r | |
734 | \r | |
735 | switch (Tcb->State) {\r | |
736 | case TCP_CLOSED:\r | |
737 | case TCP_LISTEN:\r | |
738 | case TCP_SYN_SENT:\r | |
739 | TcpSetState (Tcb, TCP_CLOSED);\r | |
740 | break;\r | |
741 | \r | |
742 | case TCP_SYN_RCVD:\r | |
743 | case TCP_ESTABLISHED:\r | |
744 | TcpSetState (Tcb, TCP_FIN_WAIT_1);\r | |
745 | break;\r | |
746 | \r | |
747 | case TCP_CLOSE_WAIT:\r | |
748 | TcpSetState (Tcb, TCP_LAST_ACK);\r | |
749 | break;\r | |
750 | }\r | |
751 | \r | |
752 | TcpToSendData (Tcb, 1);\r | |
753 | }\r | |
754 | \r | |
755 | \r | |
756 | /**\r | |
757 | Check whether the application's newly delivered data\r | |
758 | can be sent out.\r | |
759 | \r | |
760 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
761 | \r | |
762 | @retval 0 Whether the data is sent out or is buffered for\r | |
763 | further sending.\r | |
764 | @retval -1 The Tcb is not in a state that data is permitted to\r | |
765 | be sent out.\r | |
766 | \r | |
767 | **/\r | |
768 | INTN\r | |
769 | TcpOnAppSend (\r | |
770 | IN TCP_CB *Tcb\r | |
771 | )\r | |
772 | {\r | |
773 | \r | |
774 | switch (Tcb->State) {\r | |
775 | case TCP_CLOSED:\r | |
776 | return -1;\r | |
777 | break;\r | |
778 | \r | |
779 | case TCP_LISTEN:\r | |
780 | return -1;\r | |
781 | break;\r | |
782 | \r | |
783 | case TCP_SYN_SENT:\r | |
784 | case TCP_SYN_RCVD:\r | |
785 | return 0;\r | |
786 | break;\r | |
787 | \r | |
788 | case TCP_ESTABLISHED:\r | |
789 | case TCP_CLOSE_WAIT:\r | |
790 | TcpToSendData (Tcb, 0);\r | |
791 | return 0;\r | |
792 | break;\r | |
793 | \r | |
794 | case TCP_FIN_WAIT_1:\r | |
795 | case TCP_FIN_WAIT_2:\r | |
796 | case TCP_CLOSING:\r | |
797 | case TCP_LAST_ACK:\r | |
798 | case TCP_TIME_WAIT:\r | |
799 | return -1;\r | |
800 | break;\r | |
801 | }\r | |
802 | \r | |
803 | return 0;\r | |
804 | }\r | |
805 | \r | |
806 | \r | |
807 | /**\r | |
808 | Application has consumed some data, check whether\r | |
809 | to send a window updata ack or a delayed ack.\r | |
810 | \r | |
811 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
812 | \r | |
813 | \r | |
814 | **/\r | |
815 | INTN\r | |
816 | TcpOnAppConsume (\r | |
817 | IN TCP_CB *Tcb\r | |
818 | )\r | |
819 | {\r | |
4eb65aff | 820 | UINT32 TcpOld;\r |
8a67d61d | 821 | \r |
822 | switch (Tcb->State) {\r | |
823 | case TCP_CLOSED:\r | |
824 | return -1;\r | |
825 | break;\r | |
826 | \r | |
827 | case TCP_LISTEN:\r | |
828 | return -1;\r | |
829 | break;\r | |
830 | \r | |
831 | case TCP_SYN_SENT:\r | |
832 | case TCP_SYN_RCVD:\r | |
833 | return 0;\r | |
834 | break;\r | |
835 | \r | |
836 | case TCP_ESTABLISHED:\r | |
4eb65aff | 837 | TcpOld = TcpRcvWinOld (Tcb);\r |
838 | if (TcpRcvWinNow (Tcb) > TcpOld) {\r | |
8a67d61d | 839 | \r |
4eb65aff | 840 | if (TcpOld < Tcb->RcvMss) {\r |
8a67d61d | 841 | \r |
e48e37fc | 842 | DEBUG ((EFI_D_INFO, "TcpOnAppConsume: send a window"\r |
0e549d5b | 843 | " update for a window closed Tcb(%p)\n", Tcb));\r |
8a67d61d | 844 | \r |
845 | TcpSendAck (Tcb);\r | |
846 | } else if (Tcb->DelayedAck == 0) {\r | |
847 | \r | |
e48e37fc | 848 | DEBUG ((EFI_D_INFO, "TcpOnAppConsume: scheduled a delayed"\r |
0e549d5b | 849 | " ACK to update window for Tcb(%p)\n", Tcb));\r |
8a67d61d | 850 | \r |
851 | Tcb->DelayedAck = 1;\r | |
852 | }\r | |
853 | }\r | |
854 | \r | |
855 | break;\r | |
856 | \r | |
857 | case TCP_CLOSE_WAIT:\r | |
858 | return 0;\r | |
859 | break;\r | |
860 | \r | |
861 | case TCP_FIN_WAIT_1:\r | |
862 | case TCP_FIN_WAIT_2:\r | |
863 | case TCP_CLOSING:\r | |
864 | case TCP_LAST_ACK:\r | |
865 | case TCP_TIME_WAIT:\r | |
866 | return -1;\r | |
867 | break;\r | |
868 | }\r | |
869 | \r | |
870 | return -1;\r | |
871 | }\r | |
872 | \r | |
873 | \r | |
874 | /**\r | |
875 | Abort the connection by sending a reset segment, called\r | |
876 | when the application wants to abort the connection.\r | |
877 | \r | |
878 | @param Tcb Pointer to the TCP_CB of the TCP instance.\r | |
879 | \r | |
880 | @return None.\r | |
881 | \r | |
882 | **/\r | |
883 | VOID\r | |
884 | TcpOnAppAbort (\r | |
885 | IN TCP_CB *Tcb\r | |
886 | )\r | |
887 | {\r | |
e48e37fc | 888 | DEBUG ((EFI_D_WARN, "TcpOnAppAbort: connection reset "\r |
0e549d5b | 889 | "issued by application for TCB %p\n", Tcb));\r |
8a67d61d | 890 | \r |
891 | switch (Tcb->State) {\r | |
892 | case TCP_SYN_RCVD:\r | |
893 | case TCP_ESTABLISHED:\r | |
894 | case TCP_FIN_WAIT_1:\r | |
895 | case TCP_FIN_WAIT_2:\r | |
896 | case TCP_CLOSE_WAIT:\r | |
897 | TcpResetConnection (Tcb);\r | |
898 | break;\r | |
899 | }\r | |
900 | \r | |
901 | TcpSetState (Tcb, TCP_CLOSED);\r | |
902 | }\r | |
903 | \r | |
904 | \r | |
905 | /**\r | |
906 | Set the Tdp4 variable data.\r | |
907 | \r | |
908 | @param Tcp4Service Tcp4 service data.\r | |
909 | \r | |
910 | @retval EFI_OUT_OF_RESOURCES There are not enough resources to set the variable.\r | |
911 | @retval other Set variable failed.\r | |
912 | \r | |
913 | **/\r | |
914 | EFI_STATUS\r | |
915 | TcpSetVariableData (\r | |
916 | IN TCP4_SERVICE_DATA *Tcp4Service\r | |
917 | )\r | |
918 | {\r | |
919 | UINT32 NumConfiguredInstance;\r | |
e48e37fc | 920 | LIST_ENTRY *Entry;\r |
8a67d61d | 921 | TCP_CB *TcpPcb;\r |
922 | TCP4_PROTO_DATA *TcpProto;\r | |
923 | UINTN VariableDataSize;\r | |
924 | EFI_TCP4_VARIABLE_DATA *Tcp4VariableData;\r | |
925 | EFI_TCP4_SERVICE_POINT *Tcp4ServicePoint;\r | |
926 | CHAR16 *NewMacString;\r | |
927 | EFI_STATUS Status;\r | |
928 | \r | |
929 | NumConfiguredInstance = 0;\r | |
930 | \r | |
931 | //\r | |
932 | // Go through the running queue to count the instances.\r | |
933 | //\r | |
934 | NET_LIST_FOR_EACH (Entry, &mTcpRunQue) {\r | |
935 | TcpPcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
936 | \r | |
937 | TcpProto = (TCP4_PROTO_DATA *) TcpPcb->Sk->ProtoReserved;\r | |
938 | \r | |
939 | if (TcpProto->TcpService == Tcp4Service) {\r | |
940 | //\r | |
941 | // This tcp instance belongs to the Tcp4Service.\r | |
942 | //\r | |
943 | NumConfiguredInstance++;\r | |
944 | }\r | |
945 | }\r | |
946 | \r | |
947 | //\r | |
948 | // Go through the listening queue to count the instances.\r | |
949 | //\r | |
950 | NET_LIST_FOR_EACH (Entry, &mTcpListenQue) {\r | |
951 | TcpPcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
952 | \r | |
953 | TcpProto = (TCP4_PROTO_DATA *) TcpPcb->Sk->ProtoReserved;\r | |
954 | \r | |
955 | if (TcpProto->TcpService == Tcp4Service) {\r | |
956 | //\r | |
957 | // This tcp instance belongs to the Tcp4Service.\r | |
958 | //\r | |
959 | NumConfiguredInstance++;\r | |
960 | }\r | |
961 | }\r | |
962 | \r | |
963 | //\r | |
964 | // Calculate the size of the Tcp4VariableData. As there may be no Tcp4 child,\r | |
965 | // we should add extra buffer for the service points only if the number of configured\r | |
966 | // children is more than 1.\r | |
967 | //\r | |
968 | VariableDataSize = sizeof (EFI_TCP4_VARIABLE_DATA);\r | |
969 | \r | |
970 | if (NumConfiguredInstance > 1) {\r | |
971 | VariableDataSize += sizeof (EFI_TCP4_SERVICE_POINT) * (NumConfiguredInstance - 1);\r | |
972 | }\r | |
973 | \r | |
e48e37fc | 974 | Tcp4VariableData = AllocatePool (VariableDataSize);\r |
8a67d61d | 975 | if (Tcp4VariableData == NULL) {\r |
976 | return EFI_OUT_OF_RESOURCES;\r | |
977 | }\r | |
978 | \r | |
979 | Tcp4VariableData->DriverHandle = Tcp4Service->DriverBindingHandle;\r | |
980 | Tcp4VariableData->ServiceCount = NumConfiguredInstance;\r | |
981 | \r | |
982 | Tcp4ServicePoint = &Tcp4VariableData->Services[0];\r | |
983 | \r | |
984 | //\r | |
985 | // Go through the running queue to fill the service points.\r | |
986 | //\r | |
987 | NET_LIST_FOR_EACH (Entry, &mTcpRunQue) {\r | |
988 | TcpPcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
989 | \r | |
990 | TcpProto = (TCP4_PROTO_DATA *) TcpPcb->Sk->ProtoReserved;\r | |
991 | \r | |
992 | if (TcpProto->TcpService == Tcp4Service) {\r | |
993 | //\r | |
994 | // This tcp instance belongs to the Tcp4Service.\r | |
995 | //\r | |
996 | Tcp4ServicePoint->InstanceHandle = TcpPcb->Sk->SockHandle;\r | |
e48e37fc | 997 | CopyMem (&Tcp4ServicePoint->LocalAddress, &TcpPcb->LocalEnd.Ip, sizeof (EFI_IPv4_ADDRESS));\r |
8a67d61d | 998 | Tcp4ServicePoint->LocalPort = NTOHS (TcpPcb->LocalEnd.Port);\r |
e48e37fc | 999 | CopyMem (&Tcp4ServicePoint->RemoteAddress, &TcpPcb->RemoteEnd.Ip, sizeof (EFI_IPv4_ADDRESS));\r |
8a67d61d | 1000 | Tcp4ServicePoint->RemotePort = NTOHS (TcpPcb->RemoteEnd.Port);\r |
1001 | \r | |
1002 | Tcp4ServicePoint++;\r | |
1003 | }\r | |
1004 | }\r | |
1005 | \r | |
1006 | //\r | |
1007 | // Go through the listening queue to fill the service points.\r | |
1008 | //\r | |
1009 | NET_LIST_FOR_EACH (Entry, &mTcpListenQue) {\r | |
1010 | TcpPcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
1011 | \r | |
1012 | TcpProto = (TCP4_PROTO_DATA *) TcpPcb->Sk->ProtoReserved;\r | |
1013 | \r | |
1014 | if (TcpProto->TcpService == Tcp4Service) {\r | |
1015 | //\r | |
1016 | // This tcp instance belongs to the Tcp4Service.\r | |
1017 | //\r | |
1018 | Tcp4ServicePoint->InstanceHandle = TcpPcb->Sk->SockHandle;\r | |
e48e37fc | 1019 | CopyMem (&Tcp4ServicePoint->LocalAddress, &TcpPcb->LocalEnd.Ip, sizeof (EFI_IPv4_ADDRESS));\r |
8a67d61d | 1020 | Tcp4ServicePoint->LocalPort = NTOHS (TcpPcb->LocalEnd.Port);\r |
e48e37fc | 1021 | CopyMem (&Tcp4ServicePoint->RemoteAddress, &TcpPcb->RemoteEnd.Ip, sizeof (EFI_IPv4_ADDRESS));\r |
8a67d61d | 1022 | Tcp4ServicePoint->RemotePort = NTOHS (TcpPcb->RemoteEnd.Port);\r |
1023 | \r | |
1024 | Tcp4ServicePoint++;\r | |
1025 | }\r | |
1026 | }\r | |
1027 | \r | |
1028 | //\r | |
1029 | // Get the mac string.\r | |
1030 | //\r | |
1031 | Status = NetLibGetMacString (\r | |
1032 | Tcp4Service->ControllerHandle,\r | |
1033 | Tcp4Service->DriverBindingHandle,\r | |
1034 | &NewMacString\r | |
1035 | );\r | |
1036 | if (EFI_ERROR (Status)) {\r | |
1037 | goto ON_ERROR;\r | |
1038 | }\r | |
1039 | \r | |
1040 | if (Tcp4Service->MacString != NULL) {\r | |
1041 | //\r | |
1042 | // The variable is set already, we're going to update it.\r | |
1043 | //\r | |
1044 | if (StrCmp (Tcp4Service->MacString, NewMacString) != 0) {\r | |
1045 | //\r | |
1046 | // The mac address is changed, delete the previous variable first.\r | |
1047 | //\r | |
1048 | gRT->SetVariable (\r | |
1049 | Tcp4Service->MacString,\r | |
1050 | &gEfiTcp4ServiceBindingProtocolGuid,\r | |
1051 | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
1052 | 0,\r | |
1053 | NULL\r | |
1054 | );\r | |
1055 | }\r | |
1056 | \r | |
e48e37fc | 1057 | gBS->FreePool (Tcp4Service->MacString);\r |
8a67d61d | 1058 | }\r |
1059 | \r | |
1060 | Tcp4Service->MacString = NewMacString;\r | |
1061 | \r | |
1062 | Status = gRT->SetVariable (\r | |
1063 | Tcp4Service->MacString,\r | |
1064 | &gEfiTcp4ServiceBindingProtocolGuid,\r | |
1065 | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
1066 | VariableDataSize,\r | |
1067 | (VOID *) Tcp4VariableData\r | |
1068 | );\r | |
1069 | \r | |
1070 | ON_ERROR:\r | |
1071 | \r | |
e48e37fc | 1072 | gBS->FreePool (Tcp4VariableData);\r |
8a67d61d | 1073 | \r |
1074 | return Status;\r | |
1075 | }\r | |
1076 | \r | |
1077 | \r | |
1078 | /**\r | |
1079 | Clear the variable and free the resource.\r | |
1080 | \r | |
1081 | @param Tcp4Service Tcp4 service data.\r | |
1082 | \r | |
1083 | @return None.\r | |
1084 | \r | |
1085 | **/\r | |
1086 | VOID\r | |
1087 | TcpClearVariableData (\r | |
1088 | IN TCP4_SERVICE_DATA *Tcp4Service\r | |
1089 | )\r | |
1090 | {\r | |
1091 | ASSERT (Tcp4Service->MacString != NULL);\r | |
1092 | \r | |
1093 | gRT->SetVariable (\r | |
1094 | Tcp4Service->MacString,\r | |
1095 | &gEfiTcp4ServiceBindingProtocolGuid,\r | |
1096 | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
1097 | 0,\r | |
1098 | NULL\r | |
1099 | );\r | |
1100 | \r | |
e48e37fc | 1101 | gBS->FreePool (Tcp4Service->MacString);\r |
8a67d61d | 1102 | Tcp4Service->MacString = NULL;\r |
1103 | }\r | |
1104 | \r | |
e5e12de7 | 1105 | EFI_STATUS\r |
1106 | TcpInstallDevicePath (\r | |
1107 | IN SOCKET *Sock\r | |
1108 | )\r | |
1109 | /*++\r | |
1110 | \r | |
1111 | Routine Description:\r | |
1112 | \r | |
1113 | Install the device path protocol on the TCP instance.\r | |
1114 | \r | |
1115 | Arguments:\r | |
1116 | \r | |
1117 | Sock - Pointer to the socket representing the TCP instance.\r | |
1118 | \r | |
1119 | Returns:\r | |
1120 | \r | |
1121 | EFI_SUCCESS - The device path protocol is installed.\r | |
1122 | other - Failed to install the device path protocol.\r | |
1123 | \r | |
1124 | --*/\r | |
1125 | {\r | |
1126 | TCP4_PROTO_DATA *TcpProto;\r | |
1127 | TCP4_SERVICE_DATA *TcpService;\r | |
1128 | TCP_CB *Tcb;\r | |
1129 | IPv4_DEVICE_PATH Ip4DPathNode;\r | |
1130 | EFI_STATUS Status;\r | |
1131 | \r | |
1132 | TcpProto = (TCP4_PROTO_DATA *) Sock->ProtoReserved;\r | |
1133 | TcpService = TcpProto->TcpService;\r | |
1134 | Tcb = TcpProto->TcpPcb;\r | |
1135 | \r | |
1136 | NetLibCreateIPv4DPathNode (\r | |
1137 | &Ip4DPathNode,\r | |
1138 | TcpService->ControllerHandle,\r | |
1139 | Tcb->LocalEnd.Ip,\r | |
1140 | NTOHS (Tcb->LocalEnd.Port),\r | |
1141 | Tcb->RemoteEnd.Ip,\r | |
1142 | NTOHS (Tcb->RemoteEnd.Port),\r | |
1143 | EFI_IP_PROTO_TCP,\r | |
1144 | Tcb->UseDefaultAddr\r | |
1145 | );\r | |
1146 | \r | |
1147 | Sock->DevicePath = AppendDevicePathNode (\r | |
1148 | Sock->ParentDevicePath,\r | |
1149 | (EFI_DEVICE_PATH_PROTOCOL *) &Ip4DPathNode\r | |
1150 | );\r | |
1151 | if (Sock->DevicePath == NULL) {\r | |
1152 | return EFI_OUT_OF_RESOURCES;\r | |
1153 | }\r | |
1154 | \r | |
1155 | Status = gBS->InstallProtocolInterface (\r | |
1156 | &Sock->SockHandle,\r | |
1157 | &gEfiDevicePathProtocolGuid,\r | |
1158 | EFI_NATIVE_INTERFACE,\r | |
1159 | Sock->DevicePath\r | |
1160 | );\r | |
1161 | if (EFI_ERROR (Status)) {\r | |
e48e37fc | 1162 | gBS->FreePool (Sock->DevicePath);\r |
e5e12de7 | 1163 | }\r |
1164 | \r | |
1165 | return Status;\r | |
1166 | }\r |