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8a67d61d | 1 | /** @file\r |
dfc1f033 | 2 | Misc support routines for tcp.\r |
8a67d61d | 3 | \r |
dfc1f033 | 4 | Copyright (c) 2005 - 2006, Intel Corporation<BR>\r |
8a67d61d | 5 | All rights reserved. This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
dfc1f033 | 8 | http://opensource.org/licenses/bsd-license.php<BR>\r |
8a67d61d | 9 | \r |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
8a67d61d | 13 | **/\r |
14 | \r | |
15 | \r | |
16 | #include "Tcp4Main.h"\r | |
17 | \r | |
e5e12de7 | 18 | #include <Library/DevicePathLib.h>\r |
19 | \r | |
e48e37fc | 20 | LIST_ENTRY mTcpRunQue = {\r |
8a67d61d | 21 | &mTcpRunQue,\r |
22 | &mTcpRunQue\r | |
23 | };\r | |
24 | \r | |
e48e37fc | 25 | LIST_ENTRY mTcpListenQue = {\r |
8a67d61d | 26 | &mTcpListenQue,\r |
27 | &mTcpListenQue\r | |
28 | };\r | |
29 | \r | |
30 | TCP_SEQNO mTcpGlobalIss = 0x4d7e980b;\r | |
31 | \r | |
84b5c78e | 32 | CHAR16 *mTcpStateName[] = {\r |
8a67d61d | 33 | L"TCP_CLOSED",\r |
34 | L"TCP_LISTEN",\r | |
35 | L"TCP_SYN_SENT",\r | |
36 | L"TCP_SYN_RCVD",\r | |
37 | L"TCP_ESTABLISHED",\r | |
38 | L"TCP_FIN_WAIT_1",\r | |
39 | L"TCP_FIN_WAIT_2",\r | |
40 | L"TCP_CLOSING",\r | |
41 | L"TCP_TIME_WAIT",\r | |
42 | L"TCP_CLOSE_WAIT",\r | |
43 | L"TCP_LAST_ACK"\r | |
44 | };\r | |
45 | \r | |
46 | \r | |
47 | /**\r | |
48 | Initialize the Tcb local related members.\r | |
49 | \r | |
50 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
51 | \r | |
8a67d61d | 52 | **/\r |
53 | VOID\r | |
54 | TcpInitTcbLocal (\r | |
55 | IN TCP_CB *Tcb\r | |
56 | )\r | |
57 | {\r | |
58 | //\r | |
59 | // Compute the checksum of the fixed parts of pseudo header\r | |
60 | //\r | |
61 | Tcb->HeadSum = NetPseudoHeadChecksum (\r | |
62 | Tcb->LocalEnd.Ip,\r | |
63 | Tcb->RemoteEnd.Ip,\r | |
64 | 0x06,\r | |
65 | 0\r | |
66 | );\r | |
67 | \r | |
68 | Tcb->Iss = TcpGetIss ();\r | |
69 | Tcb->SndUna = Tcb->Iss;\r | |
70 | Tcb->SndNxt = Tcb->Iss;\r | |
71 | \r | |
72 | Tcb->SndWl2 = Tcb->Iss;\r | |
73 | Tcb->SndWnd = 536;\r | |
74 | \r | |
75 | Tcb->RcvWnd = GET_RCV_BUFFSIZE (Tcb->Sk);\r | |
76 | \r | |
77 | //\r | |
120db52c | 78 | // First window size is never scaled\r |
8a67d61d | 79 | //\r |
80 | Tcb->RcvWndScale = 0;\r | |
81 | }\r | |
82 | \r | |
83 | \r | |
84 | /**\r | |
85 | Initialize the peer related members.\r | |
86 | \r | |
87 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
88 | @param Seg Pointer to the segment that contains the peer's\r | |
89 | intial info.\r | |
90 | @param Opt Pointer to the options announced by the peer.\r | |
91 | \r | |
8a67d61d | 92 | **/\r |
93 | VOID\r | |
94 | TcpInitTcbPeer (\r | |
95 | IN TCP_CB *Tcb,\r | |
96 | IN TCP_SEG *Seg,\r | |
97 | IN TCP_OPTION *Opt\r | |
98 | )\r | |
99 | {\r | |
100 | UINT16 RcvMss;\r | |
101 | \r | |
102 | ASSERT (Tcb && Seg && Opt);\r | |
103 | ASSERT (TCP_FLG_ON (Seg->Flag, TCP_FLG_SYN));\r | |
104 | \r | |
105 | Tcb->SndWnd = Seg->Wnd;\r | |
106 | Tcb->SndWndMax = Tcb->SndWnd;\r | |
107 | Tcb->SndWl1 = Seg->Seq;\r | |
108 | \r | |
109 | if (TCP_FLG_ON (Seg->Flag, TCP_FLG_ACK)) {\r | |
110 | Tcb->SndWl2 = Seg->Ack;\r | |
111 | } else {\r | |
112 | Tcb->SndWl2 = Tcb->Iss + 1;\r | |
113 | }\r | |
114 | \r | |
115 | if (TCP_FLG_ON (Opt->Flag, TCP_OPTION_RCVD_MSS)) {\r | |
36ee91ca | 116 | Tcb->SndMss = (UINT16) MAX (64, Opt->Mss);\r |
8a67d61d | 117 | \r |
118 | RcvMss = TcpGetRcvMss (Tcb->Sk);\r | |
119 | if (Tcb->SndMss > RcvMss) {\r | |
120 | Tcb->SndMss = RcvMss;\r | |
121 | }\r | |
122 | \r | |
123 | } else {\r | |
124 | //\r | |
125 | // One end doesn't support MSS option, use default.\r | |
126 | //\r | |
127 | Tcb->RcvMss = 536;\r | |
128 | }\r | |
129 | \r | |
130 | Tcb->CWnd = Tcb->SndMss;\r | |
131 | \r | |
132 | Tcb->Irs = Seg->Seq;\r | |
133 | Tcb->RcvNxt = Tcb->Irs + 1;\r | |
134 | \r | |
135 | Tcb->RcvWl2 = Tcb->RcvNxt;\r | |
136 | \r | |
137 | if (TCP_FLG_ON (Opt->Flag, TCP_OPTION_RCVD_WS) &&\r | |
138 | !TCP_FLG_ON (Tcb->CtrlFlag, TCP_CTRL_NO_WS)) {\r | |
139 | \r | |
140 | Tcb->SndWndScale = Opt->WndScale;\r | |
141 | \r | |
142 | Tcb->RcvWndScale = TcpComputeScale (Tcb);\r | |
143 | TCP_SET_FLG (Tcb->CtrlFlag, TCP_CTRL_RCVD_WS);\r | |
144 | \r | |
145 | } else {\r | |
146 | //\r | |
147 | // One end doesn't support window scale option. use zero.\r | |
148 | //\r | |
149 | Tcb->RcvWndScale = 0;\r | |
150 | }\r | |
151 | \r | |
152 | if (TCP_FLG_ON (Opt->Flag, TCP_OPTION_RCVD_TS) &&\r | |
153 | !TCP_FLG_ON (Tcb->CtrlFlag, TCP_CTRL_NO_TS)) {\r | |
154 | \r | |
155 | TCP_SET_FLG (Tcb->CtrlFlag, TCP_CTRL_SND_TS);\r | |
156 | TCP_SET_FLG (Tcb->CtrlFlag, TCP_CTRL_RCVD_TS);\r | |
157 | \r | |
158 | //\r | |
159 | // Compute the effective SndMss per RFC1122\r | |
160 | // section 4.2.2.6. If timestamp option is\r | |
161 | // enabled, it will always occupy 12 bytes.\r | |
162 | //\r | |
163 | Tcb->SndMss -= TCP_OPTION_TS_ALIGNED_LEN;\r | |
164 | }\r | |
165 | }\r | |
166 | \r | |
167 | \r | |
168 | /**\r | |
169 | Locate a listen TCB that matchs the Local and Remote.\r | |
170 | \r | |
171 | @param Local Pointer to the local (IP, Port).\r | |
172 | @param Remote Pointer to the remote (IP, Port).\r | |
173 | \r | |
120db52c | 174 | @return Pointer to the TCP_CB with the least number of wildcard, \r |
175 | if NULL no match is found.\r | |
8a67d61d | 176 | \r |
177 | **/\r | |
8a67d61d | 178 | TCP_CB *\r |
179 | TcpLocateListenTcb (\r | |
180 | IN TCP_PEER *Local,\r | |
181 | IN TCP_PEER *Remote\r | |
182 | )\r | |
183 | {\r | |
e48e37fc | 184 | LIST_ENTRY *Entry;\r |
8a67d61d | 185 | TCP_CB *Node;\r |
186 | TCP_CB *Match;\r | |
187 | INTN Last;\r | |
188 | INTN Cur;\r | |
189 | \r | |
190 | Last = 4;\r | |
191 | Match = NULL;\r | |
192 | \r | |
193 | NET_LIST_FOR_EACH (Entry, &mTcpListenQue) {\r | |
194 | Node = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
195 | \r | |
196 | if ((Local->Port != Node->LocalEnd.Port) ||\r | |
197 | !TCP_PEER_MATCH (Remote, &Node->RemoteEnd) ||\r | |
120db52c | 198 | !TCP_PEER_MATCH (Local, &Node->LocalEnd)) {\r |
8a67d61d | 199 | \r |
200 | continue;\r | |
201 | }\r | |
202 | \r | |
203 | //\r | |
204 | // Compute the number of wildcard\r | |
205 | //\r | |
206 | Cur = 0;\r | |
207 | if (Node->RemoteEnd.Ip == 0) {\r | |
208 | Cur++;\r | |
209 | }\r | |
210 | \r | |
211 | if (Node->RemoteEnd.Port == 0) {\r | |
212 | Cur++;\r | |
213 | }\r | |
214 | \r | |
215 | if (Node->LocalEnd.Ip == 0) {\r | |
216 | Cur++;\r | |
217 | }\r | |
218 | \r | |
219 | if (Cur < Last) {\r | |
220 | if (Cur == 0) {\r | |
221 | return Node;\r | |
222 | }\r | |
223 | \r | |
224 | Last = Cur;\r | |
225 | Match = Node;\r | |
226 | }\r | |
227 | }\r | |
228 | \r | |
229 | return Match;\r | |
230 | }\r | |
231 | \r | |
232 | \r | |
233 | /**\r | |
234 | Try to find one Tcb whose <Ip, Port> equals to <IN Addr, IN Port>.\r | |
235 | \r | |
236 | @param Addr Pointer to the IP address needs to match.\r | |
237 | @param Port The port number needs to match.\r | |
238 | \r | |
120db52c | 239 | @return The Tcb which matches the <Addr Port> paire exists or not.\r |
8a67d61d | 240 | \r |
241 | **/\r | |
242 | BOOLEAN\r | |
243 | TcpFindTcbByPeer (\r | |
244 | IN EFI_IPv4_ADDRESS *Addr,\r | |
245 | IN TCP_PORTNO Port\r | |
246 | )\r | |
247 | {\r | |
248 | TCP_PORTNO LocalPort;\r | |
e48e37fc | 249 | LIST_ENTRY *Entry;\r |
8a67d61d | 250 | TCP_CB *Tcb;\r |
251 | \r | |
252 | ASSERT ((Addr != NULL) && (Port != 0));\r | |
253 | \r | |
254 | LocalPort = HTONS (Port);\r | |
255 | \r | |
256 | NET_LIST_FOR_EACH (Entry, &mTcpListenQue) {\r | |
257 | Tcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
258 | \r | |
84b5c78e | 259 | if (EFI_IP4_EQUAL (Addr, &Tcb->LocalEnd.Ip) &&\r |
8a67d61d | 260 | (LocalPort == Tcb->LocalEnd.Port)) {\r |
261 | \r | |
262 | return TRUE;\r | |
263 | }\r | |
264 | }\r | |
265 | \r | |
266 | NET_LIST_FOR_EACH (Entry, &mTcpRunQue) {\r | |
267 | Tcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
268 | \r | |
84b5c78e | 269 | if (EFI_IP4_EQUAL (Addr, &Tcb->LocalEnd.Ip) &&\r |
8a67d61d | 270 | (LocalPort == Tcb->LocalEnd.Port)) {\r |
271 | \r | |
272 | return TRUE;\r | |
273 | }\r | |
274 | }\r | |
275 | \r | |
276 | return FALSE;\r | |
277 | }\r | |
278 | \r | |
279 | \r | |
280 | /**\r | |
281 | Locate the TCP_CB related to the socket pair.\r | |
282 | \r | |
283 | @param LocalPort The local port number.\r | |
284 | @param LocalIp The local IP address.\r | |
285 | @param RemotePort The remote port number.\r | |
286 | @param RemoteIp The remote IP address.\r | |
287 | @param Syn Whether to search the listen sockets, if TRUE, the\r | |
288 | listen sockets are searched.\r | |
289 | \r | |
120db52c | 290 | @return Pointer to the related TCP_CB, if NULL no match is found.\r |
8a67d61d | 291 | \r |
292 | **/\r | |
293 | TCP_CB *\r | |
294 | TcpLocateTcb (\r | |
295 | IN TCP_PORTNO LocalPort,\r | |
296 | IN UINT32 LocalIp,\r | |
297 | IN TCP_PORTNO RemotePort,\r | |
298 | IN UINT32 RemoteIp,\r | |
299 | IN BOOLEAN Syn\r | |
300 | )\r | |
301 | {\r | |
302 | TCP_PEER Local;\r | |
303 | TCP_PEER Remote;\r | |
e48e37fc | 304 | LIST_ENTRY *Entry;\r |
8a67d61d | 305 | TCP_CB *Tcb;\r |
306 | \r | |
307 | Local.Port = LocalPort;\r | |
308 | Local.Ip = LocalIp;\r | |
309 | \r | |
310 | Remote.Port = RemotePort;\r | |
311 | Remote.Ip = RemoteIp;\r | |
312 | \r | |
313 | //\r | |
314 | // First check for exact match.\r | |
315 | //\r | |
316 | NET_LIST_FOR_EACH (Entry, &mTcpRunQue) {\r | |
317 | Tcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
318 | \r | |
319 | if (TCP_PEER_EQUAL (&Remote, &Tcb->RemoteEnd) &&\r | |
320 | TCP_PEER_EQUAL (&Local, &Tcb->LocalEnd)) {\r | |
321 | \r | |
e48e37fc | 322 | RemoveEntryList (&Tcb->List);\r |
323 | InsertHeadList (&mTcpRunQue, &Tcb->List);\r | |
8a67d61d | 324 | \r |
325 | return Tcb;\r | |
326 | }\r | |
327 | }\r | |
328 | \r | |
329 | //\r | |
330 | // Only check listen queue when SYN flag is on\r | |
331 | //\r | |
332 | if (Syn) {\r | |
333 | return TcpLocateListenTcb (&Local, &Remote);\r | |
334 | }\r | |
335 | \r | |
336 | return NULL;\r | |
337 | }\r | |
338 | \r | |
339 | \r | |
340 | /**\r | |
341 | Insert a Tcb into the proper queue.\r | |
342 | \r | |
343 | @param Tcb Pointer to the TCP_CB to be inserted.\r | |
344 | \r | |
345 | @retval 0 The Tcb is inserted successfully.\r | |
346 | @retval -1 Error condition occurred.\r | |
347 | \r | |
348 | **/\r | |
349 | INTN\r | |
350 | TcpInsertTcb (\r | |
351 | IN TCP_CB *Tcb\r | |
352 | )\r | |
353 | {\r | |
e48e37fc | 354 | LIST_ENTRY *Entry;\r |
355 | LIST_ENTRY *Head;\r | |
8a67d61d | 356 | TCP_CB *Node;\r |
357 | TCP4_PROTO_DATA *TcpProto;\r | |
358 | \r | |
359 | ASSERT (\r | |
120db52c | 360 | (Tcb != NULL) &&\r |
361 | ((Tcb->State == TCP_LISTEN) ||\r | |
362 | (Tcb->State == TCP_SYN_SENT) ||\r | |
363 | (Tcb->State == TCP_SYN_RCVD) ||\r | |
364 | (Tcb->State == TCP_CLOSED))\r | |
8a67d61d | 365 | );\r |
366 | \r | |
367 | if (Tcb->LocalEnd.Port == 0) {\r | |
368 | return -1;\r | |
369 | }\r | |
370 | \r | |
371 | Head = &mTcpRunQue;\r | |
372 | \r | |
373 | if (Tcb->State == TCP_LISTEN) {\r | |
374 | Head = &mTcpListenQue;\r | |
375 | }\r | |
376 | \r | |
377 | //\r | |
378 | // Check that Tcb isn't already on the list.\r | |
379 | //\r | |
380 | NET_LIST_FOR_EACH (Entry, Head) {\r | |
381 | Node = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
382 | \r | |
383 | if (TCP_PEER_EQUAL (&Tcb->LocalEnd, &Node->LocalEnd) &&\r | |
384 | TCP_PEER_EQUAL (&Tcb->RemoteEnd, &Node->RemoteEnd)) {\r | |
385 | \r | |
386 | return -1;\r | |
387 | }\r | |
388 | }\r | |
389 | \r | |
e48e37fc | 390 | InsertHeadList (Head, &Tcb->List);\r |
8a67d61d | 391 | \r |
392 | TcpProto = (TCP4_PROTO_DATA *) Tcb->Sk->ProtoReserved;\r | |
393 | TcpSetVariableData (TcpProto->TcpService);\r | |
394 | \r | |
395 | return 0;\r | |
396 | }\r | |
397 | \r | |
398 | \r | |
399 | /**\r | |
dfc1f033 | 400 | Clone a TCB_CB from Tcb.\r |
8a67d61d | 401 | \r |
402 | @param Tcb Pointer to the TCP_CB to be cloned.\r | |
403 | \r | |
120db52c | 404 | @return Pointer to the new cloned TCP_CB, if NULL error condition occurred.\r |
8a67d61d | 405 | \r |
406 | **/\r | |
407 | TCP_CB *\r | |
408 | TcpCloneTcb (\r | |
409 | IN TCP_CB *Tcb\r | |
410 | )\r | |
411 | {\r | |
412 | TCP_CB *Clone;\r | |
413 | \r | |
e48e37fc | 414 | Clone = AllocatePool (sizeof (TCP_CB));\r |
8a67d61d | 415 | \r |
416 | if (Clone == NULL) {\r | |
417 | return NULL;\r | |
418 | \r | |
419 | }\r | |
420 | \r | |
e48e37fc | 421 | CopyMem (Clone, Tcb, sizeof (TCP_CB));\r |
8a67d61d | 422 | \r |
423 | //\r | |
424 | // Increate the reference count of the shared IpInfo.\r | |
425 | //\r | |
426 | NET_GET_REF (Tcb->IpInfo);\r | |
427 | \r | |
e48e37fc | 428 | InitializeListHead (&Clone->List);\r |
429 | InitializeListHead (&Clone->SndQue);\r | |
430 | InitializeListHead (&Clone->RcvQue);\r | |
8a67d61d | 431 | \r |
432 | Clone->Sk = SockClone (Tcb->Sk);\r | |
433 | if (Clone->Sk == NULL) {\r | |
e48e37fc | 434 | DEBUG ((EFI_D_ERROR, "TcpCloneTcb: failed to clone a sock\n"));\r |
435 | gBS->FreePool (Clone);\r | |
8a67d61d | 436 | return NULL;\r |
437 | }\r | |
438 | \r | |
439 | ((TCP4_PROTO_DATA *) (Clone->Sk->ProtoReserved))->TcpPcb = Clone;\r | |
440 | \r | |
441 | return Clone;\r | |
442 | }\r | |
443 | \r | |
444 | \r | |
445 | /**\r | |
446 | Compute an ISS to be used by a new connection.\r | |
447 | \r | |
120db52c | 448 | @return The result ISS.\r |
8a67d61d | 449 | \r |
450 | **/\r | |
451 | TCP_SEQNO\r | |
452 | TcpGetIss (\r | |
453 | VOID\r | |
454 | )\r | |
455 | {\r | |
456 | mTcpGlobalIss += 2048;\r | |
457 | return mTcpGlobalIss;\r | |
458 | }\r | |
459 | \r | |
460 | \r | |
461 | /**\r | |
462 | Get the local mss.\r | |
463 | \r | |
85511ddf | 464 | @param Sock Pointer to the socket to get mss\r |
8a67d61d | 465 | \r |
120db52c | 466 | @return The mss size.\r |
8a67d61d | 467 | \r |
468 | **/\r | |
469 | UINT16\r | |
470 | TcpGetRcvMss (\r | |
471 | IN SOCKET *Sock\r | |
472 | )\r | |
473 | {\r | |
474 | EFI_SIMPLE_NETWORK_MODE SnpMode;\r | |
475 | TCP4_PROTO_DATA *TcpProto;\r | |
476 | EFI_IP4_PROTOCOL *Ip;\r | |
477 | \r | |
120db52c | 478 | ASSERT (Sock != NULL);\r |
8a67d61d | 479 | \r |
480 | TcpProto = (TCP4_PROTO_DATA *) Sock->ProtoReserved;\r | |
481 | Ip = TcpProto->TcpService->IpIo->Ip;\r | |
120db52c | 482 | ASSERT (Ip != NULL);\r |
8a67d61d | 483 | \r |
484 | Ip->GetModeData (Ip, NULL, NULL, &SnpMode);\r | |
485 | \r | |
486 | return (UINT16) (SnpMode.MaxPacketSize - 40);\r | |
487 | }\r | |
488 | \r | |
489 | \r | |
490 | /**\r | |
491 | Set the Tcb's state.\r | |
492 | \r | |
493 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
494 | @param State The state to be set.\r | |
495 | \r | |
8a67d61d | 496 | **/\r |
497 | VOID\r | |
498 | TcpSetState (\r | |
dfc1f033 | 499 | IN TCP_CB *Tcb,\r |
500 | IN TCP_STATES State\r | |
8a67d61d | 501 | )\r |
502 | {\r | |
e48e37fc | 503 | DEBUG (\r |
504 | (EFI_D_INFO,\r | |
0e549d5b | 505 | "Tcb (%p) state %s --> %s\n",\r |
8a67d61d | 506 | Tcb,\r |
507 | mTcpStateName[Tcb->State],\r | |
508 | mTcpStateName[State])\r | |
509 | );\r | |
510 | \r | |
dfc1f033 | 511 | Tcb->State = (TCP_STATES)State;\r |
8a67d61d | 512 | \r |
513 | switch (State) {\r | |
514 | case TCP_ESTABLISHED:\r | |
515 | \r | |
516 | SockConnEstablished (Tcb->Sk);\r | |
e5e12de7 | 517 | \r |
518 | if (Tcb->Parent != NULL) {\r | |
519 | //\r | |
520 | // A new connection is accepted by a listening socket, install\r | |
521 | // the device path.\r | |
522 | //\r | |
523 | TcpInstallDevicePath (Tcb->Sk);\r | |
524 | }\r | |
525 | \r | |
8a67d61d | 526 | break;\r |
527 | \r | |
528 | case TCP_CLOSED:\r | |
529 | \r | |
530 | SockConnClosed (Tcb->Sk);\r | |
531 | \r | |
dfc1f033 | 532 | break;\r |
dfa596b8 | 533 | default:\r |
8a67d61d | 534 | break;\r |
535 | }\r | |
536 | }\r | |
537 | \r | |
538 | \r | |
539 | /**\r | |
540 | Compute the TCP segment's checksum.\r | |
541 | \r | |
542 | @param Nbuf Pointer to the buffer that contains the TCP\r | |
543 | segment.\r | |
544 | @param HeadSum The checksum value of the fixed part of pseudo\r | |
545 | header.\r | |
546 | \r | |
120db52c | 547 | @return The checksum value.\r |
8a67d61d | 548 | \r |
549 | **/\r | |
550 | UINT16\r | |
551 | TcpChecksum (\r | |
552 | IN NET_BUF *Nbuf,\r | |
553 | IN UINT16 HeadSum\r | |
554 | )\r | |
555 | {\r | |
556 | UINT16 Checksum;\r | |
557 | \r | |
558 | Checksum = NetbufChecksum (Nbuf);\r | |
559 | Checksum = NetAddChecksum (Checksum, HeadSum);\r | |
560 | \r | |
120db52c | 561 | Checksum = NetAddChecksum (\r |
562 | Checksum,\r | |
563 | HTONS ((UINT16) Nbuf->TotalSize)\r | |
564 | );\r | |
8a67d61d | 565 | \r |
4eb65aff | 566 | return (UINT16) ~Checksum;\r |
8a67d61d | 567 | }\r |
568 | \r | |
8a67d61d | 569 | /**\r |
570 | Translate the information from the head of the received TCP\r | |
571 | segment Nbuf contains and fill it into a TCP_SEG structure.\r | |
572 | \r | |
573 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
574 | @param Nbuf Pointer to the buffer contains the TCP segment.\r | |
575 | \r | |
120db52c | 576 | @return Pointer to the TCP_SEG that contains the translated TCP head information.\r |
8a67d61d | 577 | \r |
578 | **/\r | |
579 | TCP_SEG *\r | |
580 | TcpFormatNetbuf (\r | |
581 | IN TCP_CB *Tcb,\r | |
582 | IN NET_BUF *Nbuf\r | |
583 | )\r | |
584 | {\r | |
585 | TCP_SEG *Seg;\r | |
586 | TCP_HEAD *Head;\r | |
587 | \r | |
588 | Seg = TCPSEG_NETBUF (Nbuf);\r | |
589 | Head = (TCP_HEAD *) NetbufGetByte (Nbuf, 0, NULL);\r | |
590 | Nbuf->Tcp = Head;\r | |
591 | \r | |
592 | Seg->Seq = NTOHL (Head->Seq);\r | |
593 | Seg->Ack = NTOHL (Head->Ack);\r | |
594 | Seg->End = Seg->Seq + (Nbuf->TotalSize - (Head->HeadLen << 2));\r | |
595 | \r | |
596 | Seg->Urg = NTOHS (Head->Urg);\r | |
597 | Seg->Wnd = (NTOHS (Head->Wnd) << Tcb->SndWndScale);\r | |
598 | Seg->Flag = Head->Flag;\r | |
599 | \r | |
600 | //\r | |
601 | // SYN and FIN flag occupy one sequence space each.\r | |
602 | //\r | |
603 | if (TCP_FLG_ON (Seg->Flag, TCP_FLG_SYN)) {\r | |
604 | //\r | |
605 | // RFC requires that initial window not be scaled\r | |
606 | //\r | |
607 | Seg->Wnd = NTOHS (Head->Wnd);\r | |
608 | Seg->End++;\r | |
609 | }\r | |
610 | \r | |
611 | if (TCP_FLG_ON (Seg->Flag, TCP_FLG_FIN)) {\r | |
612 | Seg->End++;\r | |
613 | }\r | |
614 | \r | |
615 | return Seg;\r | |
616 | }\r | |
617 | \r | |
618 | \r | |
619 | /**\r | |
620 | Reset the connection related with Tcb.\r | |
621 | \r | |
622 | @param Tcb Pointer to the TCP_CB of the connection to be\r | |
623 | reset.\r | |
624 | \r | |
8a67d61d | 625 | **/\r |
626 | VOID\r | |
627 | TcpResetConnection (\r | |
628 | IN TCP_CB *Tcb\r | |
629 | )\r | |
630 | {\r | |
631 | NET_BUF *Nbuf;\r | |
632 | TCP_HEAD *Nhead;\r | |
633 | \r | |
634 | Nbuf = NetbufAlloc (TCP_MAX_HEAD);\r | |
635 | \r | |
636 | if (Nbuf == NULL) {\r | |
637 | return ;\r | |
638 | }\r | |
639 | \r | |
640 | Nhead = (TCP_HEAD *) NetbufAllocSpace (\r | |
641 | Nbuf,\r | |
642 | sizeof (TCP_HEAD),\r | |
643 | NET_BUF_TAIL\r | |
644 | );\r | |
645 | \r | |
646 | ASSERT (Nhead != NULL);\r | |
647 | \r | |
648 | Nbuf->Tcp = Nhead;\r | |
649 | \r | |
650 | Nhead->Flag = TCP_FLG_RST;\r | |
651 | Nhead->Seq = HTONL (Tcb->SndNxt);\r | |
652 | Nhead->Ack = HTONL (Tcb->RcvNxt);\r | |
653 | Nhead->SrcPort = Tcb->LocalEnd.Port;\r | |
654 | Nhead->DstPort = Tcb->RemoteEnd.Port;\r | |
655 | Nhead->HeadLen = (sizeof (TCP_HEAD) >> 2);\r | |
656 | Nhead->Res = 0;\r | |
657 | Nhead->Wnd = HTONS (0xFFFF);\r | |
658 | Nhead->Checksum = 0;\r | |
659 | Nhead->Urg = 0;\r | |
660 | Nhead->Checksum = TcpChecksum (Nbuf, Tcb->HeadSum);\r | |
661 | \r | |
662 | TcpSendIpPacket (Tcb, Nbuf, Tcb->LocalEnd.Ip, Tcb->RemoteEnd.Ip);\r | |
663 | \r | |
664 | NetbufFree (Nbuf);\r | |
665 | }\r | |
666 | \r | |
667 | \r | |
668 | /**\r | |
120db52c | 669 | Initialize an active connection.\r |
8a67d61d | 670 | \r |
671 | @param Tcb Pointer to the TCP_CB that wants to initiate a\r | |
672 | connection.\r | |
673 | \r | |
8a67d61d | 674 | **/\r |
675 | VOID\r | |
676 | TcpOnAppConnect (\r | |
677 | IN TCP_CB *Tcb\r | |
678 | )\r | |
679 | {\r | |
680 | TcpInitTcbLocal (Tcb);\r | |
681 | TcpSetState (Tcb, TCP_SYN_SENT);\r | |
682 | \r | |
683 | TcpSetTimer (Tcb, TCP_TIMER_CONNECT, Tcb->ConnectTimeout);\r | |
684 | TcpToSendData (Tcb, 1);\r | |
685 | }\r | |
686 | \r | |
687 | \r | |
688 | /**\r | |
689 | Initiate the connection close procedure, called when\r | |
690 | applications want to close the connection.\r | |
691 | \r | |
692 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
693 | \r | |
8a67d61d | 694 | **/\r |
695 | VOID\r | |
696 | TcpOnAppClose (\r | |
697 | IN TCP_CB *Tcb\r | |
698 | )\r | |
699 | {\r | |
120db52c | 700 | ASSERT (Tcb != NULL);\r |
8a67d61d | 701 | \r |
120db52c | 702 | if (!IsListEmpty (&Tcb->RcvQue) || GET_RCV_DATASIZE (Tcb->Sk) != 0) {\r |
8a67d61d | 703 | \r |
e48e37fc | 704 | DEBUG ((EFI_D_WARN, "TcpOnAppClose: connection reset "\r |
0e549d5b | 705 | "because data is lost for TCB %p\n", Tcb));\r |
8a67d61d | 706 | \r |
707 | TcpResetConnection (Tcb);\r | |
708 | TcpClose (Tcb);\r | |
709 | return;\r | |
710 | }\r | |
711 | \r | |
712 | switch (Tcb->State) {\r | |
713 | case TCP_CLOSED:\r | |
714 | case TCP_LISTEN:\r | |
715 | case TCP_SYN_SENT:\r | |
716 | TcpSetState (Tcb, TCP_CLOSED);\r | |
717 | break;\r | |
718 | \r | |
719 | case TCP_SYN_RCVD:\r | |
720 | case TCP_ESTABLISHED:\r | |
721 | TcpSetState (Tcb, TCP_FIN_WAIT_1);\r | |
722 | break;\r | |
723 | \r | |
724 | case TCP_CLOSE_WAIT:\r | |
725 | TcpSetState (Tcb, TCP_LAST_ACK);\r | |
726 | break;\r | |
dfa596b8 | 727 | default:\r |
dfc1f033 | 728 | break;\r |
8a67d61d | 729 | }\r |
730 | \r | |
731 | TcpToSendData (Tcb, 1);\r | |
732 | }\r | |
733 | \r | |
734 | \r | |
735 | /**\r | |
120db52c | 736 | Check whether the application's newly delivered data can be sent out.\r |
8a67d61d | 737 | \r |
738 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
739 | \r | |
740 | @retval 0 Whether the data is sent out or is buffered for\r | |
741 | further sending.\r | |
742 | @retval -1 The Tcb is not in a state that data is permitted to\r | |
743 | be sent out.\r | |
744 | \r | |
745 | **/\r | |
746 | INTN\r | |
747 | TcpOnAppSend (\r | |
748 | IN TCP_CB *Tcb\r | |
749 | )\r | |
750 | {\r | |
751 | \r | |
752 | switch (Tcb->State) {\r | |
753 | case TCP_CLOSED:\r | |
754 | return -1;\r | |
755 | break;\r | |
756 | \r | |
757 | case TCP_LISTEN:\r | |
758 | return -1;\r | |
759 | break;\r | |
760 | \r | |
761 | case TCP_SYN_SENT:\r | |
762 | case TCP_SYN_RCVD:\r | |
763 | return 0;\r | |
764 | break;\r | |
765 | \r | |
766 | case TCP_ESTABLISHED:\r | |
767 | case TCP_CLOSE_WAIT:\r | |
768 | TcpToSendData (Tcb, 0);\r | |
769 | return 0;\r | |
770 | break;\r | |
771 | \r | |
772 | case TCP_FIN_WAIT_1:\r | |
773 | case TCP_FIN_WAIT_2:\r | |
774 | case TCP_CLOSING:\r | |
775 | case TCP_LAST_ACK:\r | |
776 | case TCP_TIME_WAIT:\r | |
777 | return -1;\r | |
778 | break;\r | |
dfa596b8 | 779 | default:\r |
dfc1f033 | 780 | break;\r |
8a67d61d | 781 | }\r |
782 | \r | |
783 | return 0;\r | |
784 | }\r | |
785 | \r | |
786 | \r | |
787 | /**\r | |
788 | Application has consumed some data, check whether\r | |
789 | to send a window updata ack or a delayed ack.\r | |
790 | \r | |
791 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
792 | \r | |
8a67d61d | 793 | **/\r |
794 | INTN\r | |
795 | TcpOnAppConsume (\r | |
796 | IN TCP_CB *Tcb\r | |
797 | )\r | |
798 | {\r | |
4eb65aff | 799 | UINT32 TcpOld;\r |
8a67d61d | 800 | \r |
801 | switch (Tcb->State) {\r | |
802 | case TCP_CLOSED:\r | |
803 | return -1;\r | |
804 | break;\r | |
805 | \r | |
806 | case TCP_LISTEN:\r | |
807 | return -1;\r | |
808 | break;\r | |
809 | \r | |
810 | case TCP_SYN_SENT:\r | |
811 | case TCP_SYN_RCVD:\r | |
812 | return 0;\r | |
813 | break;\r | |
814 | \r | |
815 | case TCP_ESTABLISHED:\r | |
4eb65aff | 816 | TcpOld = TcpRcvWinOld (Tcb);\r |
817 | if (TcpRcvWinNow (Tcb) > TcpOld) {\r | |
8a67d61d | 818 | \r |
4eb65aff | 819 | if (TcpOld < Tcb->RcvMss) {\r |
8a67d61d | 820 | \r |
e48e37fc | 821 | DEBUG ((EFI_D_INFO, "TcpOnAppConsume: send a window"\r |
dfc1f033 | 822 | " update for a window closed Tcb %p\n", Tcb));\r |
8a67d61d | 823 | \r |
824 | TcpSendAck (Tcb);\r | |
825 | } else if (Tcb->DelayedAck == 0) {\r | |
826 | \r | |
e48e37fc | 827 | DEBUG ((EFI_D_INFO, "TcpOnAppConsume: scheduled a delayed"\r |
dfc1f033 | 828 | " ACK to update window for Tcb %p\n", Tcb));\r |
8a67d61d | 829 | \r |
830 | Tcb->DelayedAck = 1;\r | |
831 | }\r | |
832 | }\r | |
833 | \r | |
834 | break;\r | |
835 | \r | |
836 | case TCP_CLOSE_WAIT:\r | |
837 | return 0;\r | |
838 | break;\r | |
839 | \r | |
840 | case TCP_FIN_WAIT_1:\r | |
841 | case TCP_FIN_WAIT_2:\r | |
842 | case TCP_CLOSING:\r | |
843 | case TCP_LAST_ACK:\r | |
844 | case TCP_TIME_WAIT:\r | |
845 | return -1;\r | |
846 | break;\r | |
847 | }\r | |
848 | \r | |
849 | return -1;\r | |
850 | }\r | |
851 | \r | |
852 | \r | |
853 | /**\r | |
854 | Abort the connection by sending a reset segment, called\r | |
855 | when the application wants to abort the connection.\r | |
856 | \r | |
857 | @param Tcb Pointer to the TCP_CB of the TCP instance.\r | |
858 | \r | |
8a67d61d | 859 | **/\r |
860 | VOID\r | |
861 | TcpOnAppAbort (\r | |
862 | IN TCP_CB *Tcb\r | |
863 | )\r | |
864 | {\r | |
e48e37fc | 865 | DEBUG ((EFI_D_WARN, "TcpOnAppAbort: connection reset "\r |
0e549d5b | 866 | "issued by application for TCB %p\n", Tcb));\r |
8a67d61d | 867 | \r |
868 | switch (Tcb->State) {\r | |
869 | case TCP_SYN_RCVD:\r | |
870 | case TCP_ESTABLISHED:\r | |
871 | case TCP_FIN_WAIT_1:\r | |
872 | case TCP_FIN_WAIT_2:\r | |
873 | case TCP_CLOSE_WAIT:\r | |
874 | TcpResetConnection (Tcb);\r | |
875 | break;\r | |
876 | }\r | |
877 | \r | |
878 | TcpSetState (Tcb, TCP_CLOSED);\r | |
879 | }\r | |
880 | \r | |
881 | \r | |
882 | /**\r | |
883 | Set the Tdp4 variable data.\r | |
884 | \r | |
120db52c | 885 | @param Tcp4Service Pointer to Tcp4 service data.\r |
8a67d61d | 886 | \r |
887 | @retval EFI_OUT_OF_RESOURCES There are not enough resources to set the variable.\r | |
888 | @retval other Set variable failed.\r | |
889 | \r | |
890 | **/\r | |
891 | EFI_STATUS\r | |
892 | TcpSetVariableData (\r | |
893 | IN TCP4_SERVICE_DATA *Tcp4Service\r | |
894 | )\r | |
895 | {\r | |
896 | UINT32 NumConfiguredInstance;\r | |
e48e37fc | 897 | LIST_ENTRY *Entry;\r |
8a67d61d | 898 | TCP_CB *TcpPcb;\r |
899 | TCP4_PROTO_DATA *TcpProto;\r | |
900 | UINTN VariableDataSize;\r | |
901 | EFI_TCP4_VARIABLE_DATA *Tcp4VariableData;\r | |
902 | EFI_TCP4_SERVICE_POINT *Tcp4ServicePoint;\r | |
903 | CHAR16 *NewMacString;\r | |
904 | EFI_STATUS Status;\r | |
905 | \r | |
906 | NumConfiguredInstance = 0;\r | |
907 | \r | |
908 | //\r | |
909 | // Go through the running queue to count the instances.\r | |
910 | //\r | |
911 | NET_LIST_FOR_EACH (Entry, &mTcpRunQue) {\r | |
912 | TcpPcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
913 | \r | |
914 | TcpProto = (TCP4_PROTO_DATA *) TcpPcb->Sk->ProtoReserved;\r | |
915 | \r | |
916 | if (TcpProto->TcpService == Tcp4Service) {\r | |
917 | //\r | |
918 | // This tcp instance belongs to the Tcp4Service.\r | |
919 | //\r | |
920 | NumConfiguredInstance++;\r | |
921 | }\r | |
922 | }\r | |
923 | \r | |
924 | //\r | |
925 | // Go through the listening queue to count the instances.\r | |
926 | //\r | |
927 | NET_LIST_FOR_EACH (Entry, &mTcpListenQue) {\r | |
928 | TcpPcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
929 | \r | |
930 | TcpProto = (TCP4_PROTO_DATA *) TcpPcb->Sk->ProtoReserved;\r | |
931 | \r | |
932 | if (TcpProto->TcpService == Tcp4Service) {\r | |
933 | //\r | |
934 | // This tcp instance belongs to the Tcp4Service.\r | |
935 | //\r | |
936 | NumConfiguredInstance++;\r | |
937 | }\r | |
938 | }\r | |
939 | \r | |
940 | //\r | |
941 | // Calculate the size of the Tcp4VariableData. As there may be no Tcp4 child,\r | |
942 | // we should add extra buffer for the service points only if the number of configured\r | |
943 | // children is more than 1.\r | |
944 | //\r | |
945 | VariableDataSize = sizeof (EFI_TCP4_VARIABLE_DATA);\r | |
946 | \r | |
947 | if (NumConfiguredInstance > 1) {\r | |
948 | VariableDataSize += sizeof (EFI_TCP4_SERVICE_POINT) * (NumConfiguredInstance - 1);\r | |
949 | }\r | |
950 | \r | |
e48e37fc | 951 | Tcp4VariableData = AllocatePool (VariableDataSize);\r |
8a67d61d | 952 | if (Tcp4VariableData == NULL) {\r |
953 | return EFI_OUT_OF_RESOURCES;\r | |
954 | }\r | |
955 | \r | |
956 | Tcp4VariableData->DriverHandle = Tcp4Service->DriverBindingHandle;\r | |
957 | Tcp4VariableData->ServiceCount = NumConfiguredInstance;\r | |
958 | \r | |
959 | Tcp4ServicePoint = &Tcp4VariableData->Services[0];\r | |
960 | \r | |
961 | //\r | |
962 | // Go through the running queue to fill the service points.\r | |
963 | //\r | |
964 | NET_LIST_FOR_EACH (Entry, &mTcpRunQue) {\r | |
965 | TcpPcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
966 | \r | |
967 | TcpProto = (TCP4_PROTO_DATA *) TcpPcb->Sk->ProtoReserved;\r | |
968 | \r | |
969 | if (TcpProto->TcpService == Tcp4Service) {\r | |
970 | //\r | |
971 | // This tcp instance belongs to the Tcp4Service.\r | |
972 | //\r | |
973 | Tcp4ServicePoint->InstanceHandle = TcpPcb->Sk->SockHandle;\r | |
e48e37fc | 974 | CopyMem (&Tcp4ServicePoint->LocalAddress, &TcpPcb->LocalEnd.Ip, sizeof (EFI_IPv4_ADDRESS));\r |
8a67d61d | 975 | Tcp4ServicePoint->LocalPort = NTOHS (TcpPcb->LocalEnd.Port);\r |
e48e37fc | 976 | CopyMem (&Tcp4ServicePoint->RemoteAddress, &TcpPcb->RemoteEnd.Ip, sizeof (EFI_IPv4_ADDRESS));\r |
8a67d61d | 977 | Tcp4ServicePoint->RemotePort = NTOHS (TcpPcb->RemoteEnd.Port);\r |
978 | \r | |
979 | Tcp4ServicePoint++;\r | |
980 | }\r | |
981 | }\r | |
982 | \r | |
983 | //\r | |
984 | // Go through the listening queue to fill the service points.\r | |
985 | //\r | |
986 | NET_LIST_FOR_EACH (Entry, &mTcpListenQue) {\r | |
987 | TcpPcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
988 | \r | |
989 | TcpProto = (TCP4_PROTO_DATA *) TcpPcb->Sk->ProtoReserved;\r | |
990 | \r | |
991 | if (TcpProto->TcpService == Tcp4Service) {\r | |
992 | //\r | |
993 | // This tcp instance belongs to the Tcp4Service.\r | |
994 | //\r | |
995 | Tcp4ServicePoint->InstanceHandle = TcpPcb->Sk->SockHandle;\r | |
e48e37fc | 996 | CopyMem (&Tcp4ServicePoint->LocalAddress, &TcpPcb->LocalEnd.Ip, sizeof (EFI_IPv4_ADDRESS));\r |
8a67d61d | 997 | Tcp4ServicePoint->LocalPort = NTOHS (TcpPcb->LocalEnd.Port);\r |
e48e37fc | 998 | CopyMem (&Tcp4ServicePoint->RemoteAddress, &TcpPcb->RemoteEnd.Ip, sizeof (EFI_IPv4_ADDRESS));\r |
8a67d61d | 999 | Tcp4ServicePoint->RemotePort = NTOHS (TcpPcb->RemoteEnd.Port);\r |
1000 | \r | |
1001 | Tcp4ServicePoint++;\r | |
1002 | }\r | |
1003 | }\r | |
1004 | \r | |
1005 | //\r | |
1006 | // Get the mac string.\r | |
1007 | //\r | |
1008 | Status = NetLibGetMacString (\r | |
1009 | Tcp4Service->ControllerHandle,\r | |
1010 | Tcp4Service->DriverBindingHandle,\r | |
1011 | &NewMacString\r | |
1012 | );\r | |
1013 | if (EFI_ERROR (Status)) {\r | |
1014 | goto ON_ERROR;\r | |
1015 | }\r | |
1016 | \r | |
1017 | if (Tcp4Service->MacString != NULL) {\r | |
1018 | //\r | |
1019 | // The variable is set already, we're going to update it.\r | |
1020 | //\r | |
1021 | if (StrCmp (Tcp4Service->MacString, NewMacString) != 0) {\r | |
1022 | //\r | |
1023 | // The mac address is changed, delete the previous variable first.\r | |
1024 | //\r | |
1025 | gRT->SetVariable (\r | |
1026 | Tcp4Service->MacString,\r | |
1027 | &gEfiTcp4ServiceBindingProtocolGuid,\r | |
1028 | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
1029 | 0,\r | |
1030 | NULL\r | |
1031 | );\r | |
1032 | }\r | |
1033 | \r | |
e48e37fc | 1034 | gBS->FreePool (Tcp4Service->MacString);\r |
8a67d61d | 1035 | }\r |
1036 | \r | |
1037 | Tcp4Service->MacString = NewMacString;\r | |
1038 | \r | |
1039 | Status = gRT->SetVariable (\r | |
1040 | Tcp4Service->MacString,\r | |
1041 | &gEfiTcp4ServiceBindingProtocolGuid,\r | |
1042 | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
1043 | VariableDataSize,\r | |
1044 | (VOID *) Tcp4VariableData\r | |
1045 | );\r | |
1046 | \r | |
1047 | ON_ERROR:\r | |
1048 | \r | |
e48e37fc | 1049 | gBS->FreePool (Tcp4VariableData);\r |
8a67d61d | 1050 | \r |
1051 | return Status;\r | |
1052 | }\r | |
1053 | \r | |
1054 | \r | |
1055 | /**\r | |
1056 | Clear the variable and free the resource.\r | |
1057 | \r | |
120db52c | 1058 | @param Tcp4Service Pointer to Tcp4 service data.\r |
8a67d61d | 1059 | \r |
1060 | **/\r | |
1061 | VOID\r | |
1062 | TcpClearVariableData (\r | |
1063 | IN TCP4_SERVICE_DATA *Tcp4Service\r | |
1064 | )\r | |
1065 | {\r | |
1066 | ASSERT (Tcp4Service->MacString != NULL);\r | |
1067 | \r | |
1068 | gRT->SetVariable (\r | |
1069 | Tcp4Service->MacString,\r | |
1070 | &gEfiTcp4ServiceBindingProtocolGuid,\r | |
1071 | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
1072 | 0,\r | |
1073 | NULL\r | |
1074 | );\r | |
1075 | \r | |
e48e37fc | 1076 | gBS->FreePool (Tcp4Service->MacString);\r |
8a67d61d | 1077 | Tcp4Service->MacString = NULL;\r |
1078 | }\r | |
1079 | \r | |
120db52c | 1080 | /**\r |
e5e12de7 | 1081 | Install the device path protocol on the TCP instance.\r |
1082 | \r | |
120db52c | 1083 | @param Sock Pointer to the socket representing the TCP instance.\r |
e5e12de7 | 1084 | \r |
120db52c | 1085 | @retval EFI_SUCCESS The device path protocol is installed.\r |
1086 | @retval other Failed to install the device path protocol.\r | |
e5e12de7 | 1087 | \r |
120db52c | 1088 | **/\r |
1089 | EFI_STATUS\r | |
1090 | TcpInstallDevicePath (\r | |
1091 | IN SOCKET *Sock\r | |
1092 | )\r | |
e5e12de7 | 1093 | {\r |
1094 | TCP4_PROTO_DATA *TcpProto;\r | |
1095 | TCP4_SERVICE_DATA *TcpService;\r | |
1096 | TCP_CB *Tcb;\r | |
1097 | IPv4_DEVICE_PATH Ip4DPathNode;\r | |
1098 | EFI_STATUS Status;\r | |
1099 | \r | |
1100 | TcpProto = (TCP4_PROTO_DATA *) Sock->ProtoReserved;\r | |
1101 | TcpService = TcpProto->TcpService;\r | |
1102 | Tcb = TcpProto->TcpPcb;\r | |
1103 | \r | |
1104 | NetLibCreateIPv4DPathNode (\r | |
1105 | &Ip4DPathNode,\r | |
1106 | TcpService->ControllerHandle,\r | |
1107 | Tcb->LocalEnd.Ip,\r | |
1108 | NTOHS (Tcb->LocalEnd.Port),\r | |
1109 | Tcb->RemoteEnd.Ip,\r | |
1110 | NTOHS (Tcb->RemoteEnd.Port),\r | |
1111 | EFI_IP_PROTO_TCP,\r | |
1112 | Tcb->UseDefaultAddr\r | |
1113 | );\r | |
1114 | \r | |
1115 | Sock->DevicePath = AppendDevicePathNode (\r | |
120db52c | 1116 | Sock->ParentDevicePath,\r |
1117 | (EFI_DEVICE_PATH_PROTOCOL *) &Ip4DPathNode\r | |
1118 | );\r | |
e5e12de7 | 1119 | if (Sock->DevicePath == NULL) {\r |
1120 | return EFI_OUT_OF_RESOURCES;\r | |
1121 | }\r | |
1122 | \r | |
1123 | Status = gBS->InstallProtocolInterface (\r | |
1124 | &Sock->SockHandle,\r | |
1125 | &gEfiDevicePathProtocolGuid,\r | |
1126 | EFI_NATIVE_INTERFACE,\r | |
1127 | Sock->DevicePath\r | |
1128 | );\r | |
1129 | if (EFI_ERROR (Status)) {\r | |
e48e37fc | 1130 | gBS->FreePool (Sock->DevicePath);\r |
e5e12de7 | 1131 | }\r |
1132 | \r | |
1133 | return Status;\r | |
1134 | }\r |