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8a67d61d | 1 | /** @file\r |
dfc1f033 | 2 | Misc support routines for tcp.\r |
8a67d61d | 3 | \r |
9c4a5f74 | 4 | Copyright (c) 2005 - 2010, Intel Corporation. All rights reserved.<BR>\r |
e5eed7d3 | 5 | This program and the accompanying materials\r |
8a67d61d | 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 | |
77f00155 | 55 | IN OUT TCP_CB *Tcb\r |
8a67d61d | 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 |
ac8cca2a | 80 | Tcb->RcvWndScale = 0;\r |
81 | \r | |
82 | Tcb->ProbeTimerOn = FALSE;\r | |
8a67d61d | 83 | }\r |
84 | \r | |
85 | \r | |
86 | /**\r | |
87 | Initialize the peer related members.\r | |
88 | \r | |
89 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
90 | @param Seg Pointer to the segment that contains the peer's\r | |
91 | intial info.\r | |
92 | @param Opt Pointer to the options announced by the peer.\r | |
93 | \r | |
8a67d61d | 94 | **/\r |
95 | VOID\r | |
96 | TcpInitTcbPeer (\r | |
77f00155 | 97 | IN OUT TCP_CB *Tcb,\r |
98 | IN TCP_SEG *Seg,\r | |
99 | IN TCP_OPTION *Opt\r | |
8a67d61d | 100 | )\r |
101 | {\r | |
102 | UINT16 RcvMss;\r | |
103 | \r | |
276dcc1b | 104 | ASSERT ((Tcb != NULL) && (Seg != NULL) && (Opt != NULL));\r |
8a67d61d | 105 | ASSERT (TCP_FLG_ON (Seg->Flag, TCP_FLG_SYN));\r |
106 | \r | |
107 | Tcb->SndWnd = Seg->Wnd;\r | |
108 | Tcb->SndWndMax = Tcb->SndWnd;\r | |
109 | Tcb->SndWl1 = Seg->Seq;\r | |
110 | \r | |
111 | if (TCP_FLG_ON (Seg->Flag, TCP_FLG_ACK)) {\r | |
112 | Tcb->SndWl2 = Seg->Ack;\r | |
113 | } else {\r | |
114 | Tcb->SndWl2 = Tcb->Iss + 1;\r | |
115 | }\r | |
116 | \r | |
117 | if (TCP_FLG_ON (Opt->Flag, TCP_OPTION_RCVD_MSS)) {\r | |
36ee91ca | 118 | Tcb->SndMss = (UINT16) MAX (64, Opt->Mss);\r |
8a67d61d | 119 | \r |
120 | RcvMss = TcpGetRcvMss (Tcb->Sk);\r | |
121 | if (Tcb->SndMss > RcvMss) {\r | |
122 | Tcb->SndMss = RcvMss;\r | |
123 | }\r | |
124 | \r | |
125 | } else {\r | |
126 | //\r | |
127 | // One end doesn't support MSS option, use default.\r | |
128 | //\r | |
129 | Tcb->RcvMss = 536;\r | |
130 | }\r | |
131 | \r | |
132 | Tcb->CWnd = Tcb->SndMss;\r | |
133 | \r | |
134 | Tcb->Irs = Seg->Seq;\r | |
135 | Tcb->RcvNxt = Tcb->Irs + 1;\r | |
136 | \r | |
137 | Tcb->RcvWl2 = Tcb->RcvNxt;\r | |
138 | \r | |
139 | if (TCP_FLG_ON (Opt->Flag, TCP_OPTION_RCVD_WS) &&\r | |
140 | !TCP_FLG_ON (Tcb->CtrlFlag, TCP_CTRL_NO_WS)) {\r | |
141 | \r | |
142 | Tcb->SndWndScale = Opt->WndScale;\r | |
143 | \r | |
144 | Tcb->RcvWndScale = TcpComputeScale (Tcb);\r | |
145 | TCP_SET_FLG (Tcb->CtrlFlag, TCP_CTRL_RCVD_WS);\r | |
146 | \r | |
147 | } else {\r | |
148 | //\r | |
149 | // One end doesn't support window scale option. use zero.\r | |
150 | //\r | |
151 | Tcb->RcvWndScale = 0;\r | |
152 | }\r | |
153 | \r | |
154 | if (TCP_FLG_ON (Opt->Flag, TCP_OPTION_RCVD_TS) &&\r | |
155 | !TCP_FLG_ON (Tcb->CtrlFlag, TCP_CTRL_NO_TS)) {\r | |
156 | \r | |
157 | TCP_SET_FLG (Tcb->CtrlFlag, TCP_CTRL_SND_TS);\r | |
158 | TCP_SET_FLG (Tcb->CtrlFlag, TCP_CTRL_RCVD_TS);\r | |
159 | \r | |
160 | //\r | |
161 | // Compute the effective SndMss per RFC1122\r | |
162 | // section 4.2.2.6. If timestamp option is\r | |
163 | // enabled, it will always occupy 12 bytes.\r | |
164 | //\r | |
165 | Tcb->SndMss -= TCP_OPTION_TS_ALIGNED_LEN;\r | |
166 | }\r | |
167 | }\r | |
168 | \r | |
169 | \r | |
170 | /**\r | |
171 | Locate a listen TCB that matchs the Local and Remote.\r | |
172 | \r | |
173 | @param Local Pointer to the local (IP, Port).\r | |
174 | @param Remote Pointer to the remote (IP, Port).\r | |
175 | \r | |
9c4a5f74 | 176 | @return Pointer to the TCP_CB with the least number of wildcard,\r |
120db52c | 177 | if NULL no match is found.\r |
8a67d61d | 178 | \r |
179 | **/\r | |
8a67d61d | 180 | TCP_CB *\r |
181 | TcpLocateListenTcb (\r | |
182 | IN TCP_PEER *Local,\r | |
183 | IN TCP_PEER *Remote\r | |
184 | )\r | |
185 | {\r | |
e48e37fc | 186 | LIST_ENTRY *Entry;\r |
8a67d61d | 187 | TCP_CB *Node;\r |
188 | TCP_CB *Match;\r | |
189 | INTN Last;\r | |
190 | INTN Cur;\r | |
191 | \r | |
192 | Last = 4;\r | |
193 | Match = NULL;\r | |
194 | \r | |
195 | NET_LIST_FOR_EACH (Entry, &mTcpListenQue) {\r | |
196 | Node = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
197 | \r | |
198 | if ((Local->Port != Node->LocalEnd.Port) ||\r | |
199 | !TCP_PEER_MATCH (Remote, &Node->RemoteEnd) ||\r | |
120db52c | 200 | !TCP_PEER_MATCH (Local, &Node->LocalEnd)) {\r |
8a67d61d | 201 | \r |
202 | continue;\r | |
203 | }\r | |
204 | \r | |
205 | //\r | |
206 | // Compute the number of wildcard\r | |
207 | //\r | |
208 | Cur = 0;\r | |
209 | if (Node->RemoteEnd.Ip == 0) {\r | |
210 | Cur++;\r | |
211 | }\r | |
212 | \r | |
213 | if (Node->RemoteEnd.Port == 0) {\r | |
214 | Cur++;\r | |
215 | }\r | |
216 | \r | |
217 | if (Node->LocalEnd.Ip == 0) {\r | |
218 | Cur++;\r | |
219 | }\r | |
220 | \r | |
221 | if (Cur < Last) {\r | |
222 | if (Cur == 0) {\r | |
223 | return Node;\r | |
224 | }\r | |
225 | \r | |
226 | Last = Cur;\r | |
227 | Match = Node;\r | |
228 | }\r | |
229 | }\r | |
230 | \r | |
231 | return Match;\r | |
232 | }\r | |
233 | \r | |
234 | \r | |
235 | /**\r | |
236 | Try to find one Tcb whose <Ip, Port> equals to <IN Addr, IN Port>.\r | |
237 | \r | |
238 | @param Addr Pointer to the IP address needs to match.\r | |
239 | @param Port The port number needs to match.\r | |
240 | \r | |
120db52c | 241 | @return The Tcb which matches the <Addr Port> paire exists or not.\r |
8a67d61d | 242 | \r |
243 | **/\r | |
244 | BOOLEAN\r | |
245 | TcpFindTcbByPeer (\r | |
246 | IN EFI_IPv4_ADDRESS *Addr,\r | |
247 | IN TCP_PORTNO Port\r | |
248 | )\r | |
249 | {\r | |
250 | TCP_PORTNO LocalPort;\r | |
e48e37fc | 251 | LIST_ENTRY *Entry;\r |
8a67d61d | 252 | TCP_CB *Tcb;\r |
253 | \r | |
254 | ASSERT ((Addr != NULL) && (Port != 0));\r | |
255 | \r | |
256 | LocalPort = HTONS (Port);\r | |
257 | \r | |
258 | NET_LIST_FOR_EACH (Entry, &mTcpListenQue) {\r | |
259 | Tcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
260 | \r | |
84b5c78e | 261 | if (EFI_IP4_EQUAL (Addr, &Tcb->LocalEnd.Ip) &&\r |
8a67d61d | 262 | (LocalPort == Tcb->LocalEnd.Port)) {\r |
263 | \r | |
264 | return TRUE;\r | |
265 | }\r | |
266 | }\r | |
267 | \r | |
268 | NET_LIST_FOR_EACH (Entry, &mTcpRunQue) {\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 | return FALSE;\r | |
279 | }\r | |
280 | \r | |
281 | \r | |
282 | /**\r | |
283 | Locate the TCP_CB related to the socket pair.\r | |
284 | \r | |
285 | @param LocalPort The local port number.\r | |
286 | @param LocalIp The local IP address.\r | |
287 | @param RemotePort The remote port number.\r | |
288 | @param RemoteIp The remote IP address.\r | |
289 | @param Syn Whether to search the listen sockets, if TRUE, the\r | |
290 | listen sockets are searched.\r | |
291 | \r | |
120db52c | 292 | @return Pointer to the related TCP_CB, if NULL no match is found.\r |
8a67d61d | 293 | \r |
294 | **/\r | |
295 | TCP_CB *\r | |
296 | TcpLocateTcb (\r | |
297 | IN TCP_PORTNO LocalPort,\r | |
298 | IN UINT32 LocalIp,\r | |
299 | IN TCP_PORTNO RemotePort,\r | |
300 | IN UINT32 RemoteIp,\r | |
301 | IN BOOLEAN Syn\r | |
302 | )\r | |
303 | {\r | |
304 | TCP_PEER Local;\r | |
305 | TCP_PEER Remote;\r | |
e48e37fc | 306 | LIST_ENTRY *Entry;\r |
8a67d61d | 307 | TCP_CB *Tcb;\r |
308 | \r | |
309 | Local.Port = LocalPort;\r | |
310 | Local.Ip = LocalIp;\r | |
311 | \r | |
312 | Remote.Port = RemotePort;\r | |
313 | Remote.Ip = RemoteIp;\r | |
314 | \r | |
315 | //\r | |
316 | // First check for exact match.\r | |
317 | //\r | |
318 | NET_LIST_FOR_EACH (Entry, &mTcpRunQue) {\r | |
319 | Tcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
320 | \r | |
321 | if (TCP_PEER_EQUAL (&Remote, &Tcb->RemoteEnd) &&\r | |
322 | TCP_PEER_EQUAL (&Local, &Tcb->LocalEnd)) {\r | |
323 | \r | |
e48e37fc | 324 | RemoveEntryList (&Tcb->List);\r |
325 | InsertHeadList (&mTcpRunQue, &Tcb->List);\r | |
8a67d61d | 326 | \r |
327 | return Tcb;\r | |
328 | }\r | |
329 | }\r | |
330 | \r | |
331 | //\r | |
332 | // Only check listen queue when SYN flag is on\r | |
333 | //\r | |
334 | if (Syn) {\r | |
335 | return TcpLocateListenTcb (&Local, &Remote);\r | |
336 | }\r | |
337 | \r | |
338 | return NULL;\r | |
339 | }\r | |
340 | \r | |
341 | \r | |
342 | /**\r | |
343 | Insert a Tcb into the proper queue.\r | |
344 | \r | |
345 | @param Tcb Pointer to the TCP_CB to be inserted.\r | |
346 | \r | |
347 | @retval 0 The Tcb is inserted successfully.\r | |
348 | @retval -1 Error condition occurred.\r | |
349 | \r | |
350 | **/\r | |
351 | INTN\r | |
352 | TcpInsertTcb (\r | |
353 | IN TCP_CB *Tcb\r | |
354 | )\r | |
355 | {\r | |
e48e37fc | 356 | LIST_ENTRY *Entry;\r |
357 | LIST_ENTRY *Head;\r | |
8a67d61d | 358 | TCP_CB *Node;\r |
359 | TCP4_PROTO_DATA *TcpProto;\r | |
360 | \r | |
361 | ASSERT (\r | |
120db52c | 362 | (Tcb != NULL) &&\r |
363 | ((Tcb->State == TCP_LISTEN) ||\r | |
364 | (Tcb->State == TCP_SYN_SENT) ||\r | |
365 | (Tcb->State == TCP_SYN_RCVD) ||\r | |
366 | (Tcb->State == TCP_CLOSED))\r | |
8a67d61d | 367 | );\r |
368 | \r | |
369 | if (Tcb->LocalEnd.Port == 0) {\r | |
370 | return -1;\r | |
371 | }\r | |
372 | \r | |
373 | Head = &mTcpRunQue;\r | |
374 | \r | |
375 | if (Tcb->State == TCP_LISTEN) {\r | |
376 | Head = &mTcpListenQue;\r | |
377 | }\r | |
378 | \r | |
379 | //\r | |
380 | // Check that Tcb isn't already on the list.\r | |
381 | //\r | |
382 | NET_LIST_FOR_EACH (Entry, Head) {\r | |
383 | Node = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
384 | \r | |
385 | if (TCP_PEER_EQUAL (&Tcb->LocalEnd, &Node->LocalEnd) &&\r | |
386 | TCP_PEER_EQUAL (&Tcb->RemoteEnd, &Node->RemoteEnd)) {\r | |
387 | \r | |
388 | return -1;\r | |
389 | }\r | |
390 | }\r | |
391 | \r | |
e48e37fc | 392 | InsertHeadList (Head, &Tcb->List);\r |
8a67d61d | 393 | \r |
394 | TcpProto = (TCP4_PROTO_DATA *) Tcb->Sk->ProtoReserved;\r | |
395 | TcpSetVariableData (TcpProto->TcpService);\r | |
396 | \r | |
397 | return 0;\r | |
398 | }\r | |
399 | \r | |
400 | \r | |
401 | /**\r | |
dfc1f033 | 402 | Clone a TCB_CB from Tcb.\r |
8a67d61d | 403 | \r |
404 | @param Tcb Pointer to the TCP_CB to be cloned.\r | |
405 | \r | |
120db52c | 406 | @return Pointer to the new cloned TCP_CB, if NULL error condition occurred.\r |
8a67d61d | 407 | \r |
408 | **/\r | |
409 | TCP_CB *\r | |
410 | TcpCloneTcb (\r | |
411 | IN TCP_CB *Tcb\r | |
412 | )\r | |
413 | {\r | |
414 | TCP_CB *Clone;\r | |
415 | \r | |
e48e37fc | 416 | Clone = AllocatePool (sizeof (TCP_CB));\r |
8a67d61d | 417 | \r |
418 | if (Clone == NULL) {\r | |
419 | return NULL;\r | |
420 | \r | |
421 | }\r | |
422 | \r | |
e48e37fc | 423 | CopyMem (Clone, Tcb, sizeof (TCP_CB));\r |
8a67d61d | 424 | \r |
425 | //\r | |
426 | // Increate the reference count of the shared IpInfo.\r | |
427 | //\r | |
428 | NET_GET_REF (Tcb->IpInfo);\r | |
429 | \r | |
e48e37fc | 430 | InitializeListHead (&Clone->List);\r |
431 | InitializeListHead (&Clone->SndQue);\r | |
432 | InitializeListHead (&Clone->RcvQue);\r | |
8a67d61d | 433 | \r |
434 | Clone->Sk = SockClone (Tcb->Sk);\r | |
435 | if (Clone->Sk == NULL) {\r | |
e48e37fc | 436 | DEBUG ((EFI_D_ERROR, "TcpCloneTcb: failed to clone a sock\n"));\r |
766c7483 | 437 | FreePool (Clone);\r |
8a67d61d | 438 | return NULL;\r |
439 | }\r | |
440 | \r | |
441 | ((TCP4_PROTO_DATA *) (Clone->Sk->ProtoReserved))->TcpPcb = Clone;\r | |
442 | \r | |
443 | return Clone;\r | |
444 | }\r | |
445 | \r | |
446 | \r | |
447 | /**\r | |
448 | Compute an ISS to be used by a new connection.\r | |
449 | \r | |
120db52c | 450 | @return The result ISS.\r |
8a67d61d | 451 | \r |
452 | **/\r | |
453 | TCP_SEQNO\r | |
454 | TcpGetIss (\r | |
455 | VOID\r | |
456 | )\r | |
457 | {\r | |
458 | mTcpGlobalIss += 2048;\r | |
459 | return mTcpGlobalIss;\r | |
460 | }\r | |
461 | \r | |
462 | \r | |
463 | /**\r | |
464 | Get the local mss.\r | |
465 | \r | |
85511ddf | 466 | @param Sock Pointer to the socket to get mss\r |
8a67d61d | 467 | \r |
120db52c | 468 | @return The mss size.\r |
8a67d61d | 469 | \r |
470 | **/\r | |
471 | UINT16\r | |
472 | TcpGetRcvMss (\r | |
473 | IN SOCKET *Sock\r | |
474 | )\r | |
475 | {\r | |
a1503a32 | 476 | EFI_IP4_MODE_DATA Ip4Mode;\r |
8a67d61d | 477 | TCP4_PROTO_DATA *TcpProto;\r |
478 | EFI_IP4_PROTOCOL *Ip;\r | |
479 | \r | |
120db52c | 480 | ASSERT (Sock != NULL);\r |
8a67d61d | 481 | \r |
482 | TcpProto = (TCP4_PROTO_DATA *) Sock->ProtoReserved;\r | |
2a2e33b2 | 483 | Ip = TcpProto->TcpService->IpIo->Ip.Ip4;\r |
120db52c | 484 | ASSERT (Ip != NULL);\r |
8a67d61d | 485 | \r |
a1503a32 | 486 | Ip->GetModeData (Ip, &Ip4Mode, NULL, NULL);\r |
8a67d61d | 487 | \r |
a1503a32 | 488 | return (UINT16) (Ip4Mode.MaxPacketSize - sizeof (TCP_HEAD));\r |
8a67d61d | 489 | }\r |
490 | \r | |
491 | \r | |
492 | /**\r | |
493 | Set the Tcb's state.\r | |
494 | \r | |
495 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
496 | @param State The state to be set.\r | |
497 | \r | |
8a67d61d | 498 | **/\r |
499 | VOID\r | |
500 | TcpSetState (\r | |
77f00155 | 501 | IN OUT TCP_CB *Tcb,\r |
502 | IN UINT8 State\r | |
8a67d61d | 503 | )\r |
504 | {\r | |
9c4a5f74 | 505 | ASSERT (Tcb->State < (sizeof (mTcpStateName) / sizeof (CHAR16 *)));\r |
506 | ASSERT (State < (sizeof (mTcpStateName) / sizeof (CHAR16 *)));\r | |
507 | \r | |
e48e37fc | 508 | DEBUG (\r |
509 | (EFI_D_INFO,\r | |
0e549d5b | 510 | "Tcb (%p) state %s --> %s\n",\r |
8a67d61d | 511 | Tcb,\r |
512 | mTcpStateName[Tcb->State],\r | |
513 | mTcpStateName[State])\r | |
514 | );\r | |
515 | \r | |
276dcc1b | 516 | Tcb->State = State;\r |
8a67d61d | 517 | \r |
518 | switch (State) {\r | |
519 | case TCP_ESTABLISHED:\r | |
520 | \r | |
521 | SockConnEstablished (Tcb->Sk);\r | |
e5e12de7 | 522 | \r |
523 | if (Tcb->Parent != NULL) {\r | |
524 | //\r | |
525 | // A new connection is accepted by a listening socket, install\r | |
526 | // the device path.\r | |
527 | //\r | |
528 | TcpInstallDevicePath (Tcb->Sk);\r | |
529 | }\r | |
530 | \r | |
8a67d61d | 531 | break;\r |
532 | \r | |
533 | case TCP_CLOSED:\r | |
534 | \r | |
535 | SockConnClosed (Tcb->Sk);\r | |
536 | \r | |
dfc1f033 | 537 | break;\r |
dfa596b8 | 538 | default:\r |
8a67d61d | 539 | break;\r |
540 | }\r | |
541 | }\r | |
542 | \r | |
543 | \r | |
544 | /**\r | |
545 | Compute the TCP segment's checksum.\r | |
546 | \r | |
547 | @param Nbuf Pointer to the buffer that contains the TCP\r | |
548 | segment.\r | |
549 | @param HeadSum The checksum value of the fixed part of pseudo\r | |
550 | header.\r | |
551 | \r | |
120db52c | 552 | @return The checksum value.\r |
8a67d61d | 553 | \r |
554 | **/\r | |
555 | UINT16\r | |
556 | TcpChecksum (\r | |
557 | IN NET_BUF *Nbuf,\r | |
558 | IN UINT16 HeadSum\r | |
559 | )\r | |
560 | {\r | |
561 | UINT16 Checksum;\r | |
562 | \r | |
563 | Checksum = NetbufChecksum (Nbuf);\r | |
564 | Checksum = NetAddChecksum (Checksum, HeadSum);\r | |
565 | \r | |
120db52c | 566 | Checksum = NetAddChecksum (\r |
567 | Checksum,\r | |
568 | HTONS ((UINT16) Nbuf->TotalSize)\r | |
569 | );\r | |
8a67d61d | 570 | \r |
4eb65aff | 571 | return (UINT16) ~Checksum;\r |
8a67d61d | 572 | }\r |
573 | \r | |
8a67d61d | 574 | /**\r |
575 | Translate the information from the head of the received TCP\r | |
576 | segment Nbuf contains and fill it into a TCP_SEG structure.\r | |
577 | \r | |
578 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
579 | @param Nbuf Pointer to the buffer contains the TCP segment.\r | |
580 | \r | |
120db52c | 581 | @return Pointer to the TCP_SEG that contains the translated TCP head information.\r |
8a67d61d | 582 | \r |
583 | **/\r | |
584 | TCP_SEG *\r | |
585 | TcpFormatNetbuf (\r | |
77f00155 | 586 | IN TCP_CB *Tcb,\r |
587 | IN OUT NET_BUF *Nbuf\r | |
8a67d61d | 588 | )\r |
589 | {\r | |
590 | TCP_SEG *Seg;\r | |
591 | TCP_HEAD *Head;\r | |
592 | \r | |
593 | Seg = TCPSEG_NETBUF (Nbuf);\r | |
594 | Head = (TCP_HEAD *) NetbufGetByte (Nbuf, 0, NULL);\r | |
595 | Nbuf->Tcp = Head;\r | |
596 | \r | |
597 | Seg->Seq = NTOHL (Head->Seq);\r | |
598 | Seg->Ack = NTOHL (Head->Ack);\r | |
599 | Seg->End = Seg->Seq + (Nbuf->TotalSize - (Head->HeadLen << 2));\r | |
600 | \r | |
601 | Seg->Urg = NTOHS (Head->Urg);\r | |
602 | Seg->Wnd = (NTOHS (Head->Wnd) << Tcb->SndWndScale);\r | |
603 | Seg->Flag = Head->Flag;\r | |
604 | \r | |
605 | //\r | |
606 | // SYN and FIN flag occupy one sequence space each.\r | |
607 | //\r | |
608 | if (TCP_FLG_ON (Seg->Flag, TCP_FLG_SYN)) {\r | |
609 | //\r | |
610 | // RFC requires that initial window not be scaled\r | |
611 | //\r | |
612 | Seg->Wnd = NTOHS (Head->Wnd);\r | |
613 | Seg->End++;\r | |
614 | }\r | |
615 | \r | |
616 | if (TCP_FLG_ON (Seg->Flag, TCP_FLG_FIN)) {\r | |
617 | Seg->End++;\r | |
618 | }\r | |
619 | \r | |
620 | return Seg;\r | |
621 | }\r | |
622 | \r | |
623 | \r | |
624 | /**\r | |
625 | Reset the connection related with Tcb.\r | |
626 | \r | |
627 | @param Tcb Pointer to the TCP_CB of the connection to be\r | |
628 | reset.\r | |
629 | \r | |
8a67d61d | 630 | **/\r |
631 | VOID\r | |
632 | TcpResetConnection (\r | |
633 | IN TCP_CB *Tcb\r | |
634 | )\r | |
635 | {\r | |
636 | NET_BUF *Nbuf;\r | |
637 | TCP_HEAD *Nhead;\r | |
638 | \r | |
639 | Nbuf = NetbufAlloc (TCP_MAX_HEAD);\r | |
640 | \r | |
641 | if (Nbuf == NULL) {\r | |
642 | return ;\r | |
643 | }\r | |
644 | \r | |
645 | Nhead = (TCP_HEAD *) NetbufAllocSpace (\r | |
646 | Nbuf,\r | |
647 | sizeof (TCP_HEAD),\r | |
648 | NET_BUF_TAIL\r | |
649 | );\r | |
650 | \r | |
651 | ASSERT (Nhead != NULL);\r | |
652 | \r | |
653 | Nbuf->Tcp = Nhead;\r | |
654 | \r | |
655 | Nhead->Flag = TCP_FLG_RST;\r | |
656 | Nhead->Seq = HTONL (Tcb->SndNxt);\r | |
657 | Nhead->Ack = HTONL (Tcb->RcvNxt);\r | |
658 | Nhead->SrcPort = Tcb->LocalEnd.Port;\r | |
659 | Nhead->DstPort = Tcb->RemoteEnd.Port;\r | |
660 | Nhead->HeadLen = (sizeof (TCP_HEAD) >> 2);\r | |
661 | Nhead->Res = 0;\r | |
662 | Nhead->Wnd = HTONS (0xFFFF);\r | |
663 | Nhead->Checksum = 0;\r | |
664 | Nhead->Urg = 0;\r | |
665 | Nhead->Checksum = TcpChecksum (Nbuf, Tcb->HeadSum);\r | |
666 | \r | |
667 | TcpSendIpPacket (Tcb, Nbuf, Tcb->LocalEnd.Ip, Tcb->RemoteEnd.Ip);\r | |
668 | \r | |
669 | NetbufFree (Nbuf);\r | |
670 | }\r | |
671 | \r | |
672 | \r | |
673 | /**\r | |
120db52c | 674 | Initialize an active connection.\r |
8a67d61d | 675 | \r |
676 | @param Tcb Pointer to the TCP_CB that wants to initiate a\r | |
677 | connection.\r | |
678 | \r | |
8a67d61d | 679 | **/\r |
680 | VOID\r | |
681 | TcpOnAppConnect (\r | |
77f00155 | 682 | IN OUT TCP_CB *Tcb\r |
8a67d61d | 683 | )\r |
684 | {\r | |
685 | TcpInitTcbLocal (Tcb);\r | |
686 | TcpSetState (Tcb, TCP_SYN_SENT);\r | |
687 | \r | |
688 | TcpSetTimer (Tcb, TCP_TIMER_CONNECT, Tcb->ConnectTimeout);\r | |
689 | TcpToSendData (Tcb, 1);\r | |
690 | }\r | |
691 | \r | |
692 | \r | |
693 | /**\r | |
694 | Initiate the connection close procedure, called when\r | |
695 | applications want to close the connection.\r | |
696 | \r | |
697 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
698 | \r | |
8a67d61d | 699 | **/\r |
700 | VOID\r | |
701 | TcpOnAppClose (\r | |
77f00155 | 702 | IN OUT TCP_CB *Tcb\r |
8a67d61d | 703 | )\r |
704 | {\r | |
120db52c | 705 | ASSERT (Tcb != NULL);\r |
8a67d61d | 706 | \r |
120db52c | 707 | if (!IsListEmpty (&Tcb->RcvQue) || GET_RCV_DATASIZE (Tcb->Sk) != 0) {\r |
8a67d61d | 708 | \r |
e48e37fc | 709 | DEBUG ((EFI_D_WARN, "TcpOnAppClose: connection reset "\r |
0e549d5b | 710 | "because data is lost for TCB %p\n", Tcb));\r |
8a67d61d | 711 | \r |
712 | TcpResetConnection (Tcb);\r | |
713 | TcpClose (Tcb);\r | |
714 | return;\r | |
715 | }\r | |
716 | \r | |
717 | switch (Tcb->State) {\r | |
718 | case TCP_CLOSED:\r | |
719 | case TCP_LISTEN:\r | |
720 | case TCP_SYN_SENT:\r | |
721 | TcpSetState (Tcb, TCP_CLOSED);\r | |
722 | break;\r | |
723 | \r | |
724 | case TCP_SYN_RCVD:\r | |
725 | case TCP_ESTABLISHED:\r | |
726 | TcpSetState (Tcb, TCP_FIN_WAIT_1);\r | |
727 | break;\r | |
728 | \r | |
729 | case TCP_CLOSE_WAIT:\r | |
730 | TcpSetState (Tcb, TCP_LAST_ACK);\r | |
731 | break;\r | |
dfa596b8 | 732 | default:\r |
dfc1f033 | 733 | break;\r |
8a67d61d | 734 | }\r |
735 | \r | |
736 | TcpToSendData (Tcb, 1);\r | |
737 | }\r | |
738 | \r | |
739 | \r | |
740 | /**\r | |
120db52c | 741 | Check whether the application's newly delivered data can be sent out.\r |
8a67d61d | 742 | \r |
743 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
744 | \r | |
745 | @retval 0 Whether the data is sent out or is buffered for\r | |
746 | further sending.\r | |
747 | @retval -1 The Tcb is not in a state that data is permitted to\r | |
748 | be sent out.\r | |
749 | \r | |
750 | **/\r | |
751 | INTN\r | |
752 | TcpOnAppSend (\r | |
77f00155 | 753 | IN OUT TCP_CB *Tcb\r |
8a67d61d | 754 | )\r |
755 | {\r | |
756 | \r | |
757 | switch (Tcb->State) {\r | |
758 | case TCP_CLOSED:\r | |
759 | return -1;\r | |
8a67d61d | 760 | \r |
761 | case TCP_LISTEN:\r | |
762 | return -1;\r | |
8a67d61d | 763 | \r |
764 | case TCP_SYN_SENT:\r | |
765 | case TCP_SYN_RCVD:\r | |
766 | return 0;\r | |
8a67d61d | 767 | \r |
768 | case TCP_ESTABLISHED:\r | |
769 | case TCP_CLOSE_WAIT:\r | |
770 | TcpToSendData (Tcb, 0);\r | |
771 | return 0;\r | |
8a67d61d | 772 | \r |
773 | case TCP_FIN_WAIT_1:\r | |
774 | case TCP_FIN_WAIT_2:\r | |
775 | case TCP_CLOSING:\r | |
776 | case TCP_LAST_ACK:\r | |
777 | case TCP_TIME_WAIT:\r | |
778 | return -1;\r | |
77f00155 | 779 | \r |
dfa596b8 | 780 | default:\r |
dfc1f033 | 781 | break;\r |
8a67d61d | 782 | }\r |
783 | \r | |
784 | return 0;\r | |
785 | }\r | |
786 | \r | |
787 | \r | |
788 | /**\r | |
789 | Application has consumed some data, check whether\r | |
790 | to send a window updata ack or a delayed ack.\r | |
791 | \r | |
792 | @param Tcb Pointer to the TCP_CB of this TCP instance.\r | |
793 | \r | |
8a67d61d | 794 | **/\r |
276dcc1b | 795 | VOID\r |
8a67d61d | 796 | TcpOnAppConsume (\r |
797 | IN TCP_CB *Tcb\r | |
798 | )\r | |
799 | {\r | |
4eb65aff | 800 | UINT32 TcpOld;\r |
8a67d61d | 801 | \r |
802 | switch (Tcb->State) {\r | |
803 | case TCP_CLOSED:\r | |
276dcc1b | 804 | return;\r |
8a67d61d | 805 | \r |
806 | case TCP_LISTEN:\r | |
276dcc1b | 807 | return;\r |
8a67d61d | 808 | \r |
809 | case TCP_SYN_SENT:\r | |
810 | case TCP_SYN_RCVD:\r | |
276dcc1b | 811 | return;\r |
8a67d61d | 812 | \r |
813 | case TCP_ESTABLISHED:\r | |
4eb65aff | 814 | TcpOld = TcpRcvWinOld (Tcb);\r |
815 | if (TcpRcvWinNow (Tcb) > TcpOld) {\r | |
8a67d61d | 816 | \r |
4eb65aff | 817 | if (TcpOld < Tcb->RcvMss) {\r |
8a67d61d | 818 | \r |
e48e37fc | 819 | DEBUG ((EFI_D_INFO, "TcpOnAppConsume: send a window"\r |
dfc1f033 | 820 | " update for a window closed Tcb %p\n", Tcb));\r |
8a67d61d | 821 | \r |
822 | TcpSendAck (Tcb);\r | |
823 | } else if (Tcb->DelayedAck == 0) {\r | |
824 | \r | |
e48e37fc | 825 | DEBUG ((EFI_D_INFO, "TcpOnAppConsume: scheduled a delayed"\r |
dfc1f033 | 826 | " ACK to update window for Tcb %p\n", Tcb));\r |
8a67d61d | 827 | \r |
828 | Tcb->DelayedAck = 1;\r | |
829 | }\r | |
830 | }\r | |
831 | \r | |
832 | break;\r | |
833 | \r | |
834 | case TCP_CLOSE_WAIT:\r | |
276dcc1b | 835 | return;\r |
8a67d61d | 836 | \r |
837 | case TCP_FIN_WAIT_1:\r | |
838 | case TCP_FIN_WAIT_2:\r | |
839 | case TCP_CLOSING:\r | |
840 | case TCP_LAST_ACK:\r | |
841 | case TCP_TIME_WAIT:\r | |
276dcc1b | 842 | return;\r |
c191cdd1 | 843 | \r |
844 | default:\r | |
845 | break;\r | |
8a67d61d | 846 | }\r |
8a67d61d | 847 | }\r |
848 | \r | |
849 | \r | |
850 | /**\r | |
851 | Abort the connection by sending a reset segment, called\r | |
852 | when the application wants to abort the connection.\r | |
853 | \r | |
854 | @param Tcb Pointer to the TCP_CB of the TCP instance.\r | |
855 | \r | |
8a67d61d | 856 | **/\r |
857 | VOID\r | |
858 | TcpOnAppAbort (\r | |
859 | IN TCP_CB *Tcb\r | |
860 | )\r | |
861 | {\r | |
e48e37fc | 862 | DEBUG ((EFI_D_WARN, "TcpOnAppAbort: connection reset "\r |
0e549d5b | 863 | "issued by application for TCB %p\n", Tcb));\r |
8a67d61d | 864 | \r |
865 | switch (Tcb->State) {\r | |
866 | case TCP_SYN_RCVD:\r | |
867 | case TCP_ESTABLISHED:\r | |
868 | case TCP_FIN_WAIT_1:\r | |
869 | case TCP_FIN_WAIT_2:\r | |
870 | case TCP_CLOSE_WAIT:\r | |
871 | TcpResetConnection (Tcb);\r | |
872 | break;\r | |
77f00155 | 873 | default:\r |
874 | break;\r | |
8a67d61d | 875 | }\r |
876 | \r | |
877 | TcpSetState (Tcb, TCP_CLOSED);\r | |
878 | }\r | |
879 | \r | |
880 | \r | |
881 | /**\r | |
882 | Set the Tdp4 variable data.\r | |
883 | \r | |
120db52c | 884 | @param Tcp4Service Pointer to Tcp4 service data.\r |
8a67d61d | 885 | \r |
886 | @retval EFI_OUT_OF_RESOURCES There are not enough resources to set the variable.\r | |
887 | @retval other Set variable failed.\r | |
888 | \r | |
889 | **/\r | |
890 | EFI_STATUS\r | |
891 | TcpSetVariableData (\r | |
892 | IN TCP4_SERVICE_DATA *Tcp4Service\r | |
893 | )\r | |
894 | {\r | |
895 | UINT32 NumConfiguredInstance;\r | |
e48e37fc | 896 | LIST_ENTRY *Entry;\r |
8a67d61d | 897 | TCP_CB *TcpPcb;\r |
898 | TCP4_PROTO_DATA *TcpProto;\r | |
899 | UINTN VariableDataSize;\r | |
900 | EFI_TCP4_VARIABLE_DATA *Tcp4VariableData;\r | |
901 | EFI_TCP4_SERVICE_POINT *Tcp4ServicePoint;\r | |
902 | CHAR16 *NewMacString;\r | |
903 | EFI_STATUS Status;\r | |
904 | \r | |
905 | NumConfiguredInstance = 0;\r | |
906 | \r | |
907 | //\r | |
908 | // Go through the running queue to count the instances.\r | |
909 | //\r | |
910 | NET_LIST_FOR_EACH (Entry, &mTcpRunQue) {\r | |
911 | TcpPcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
912 | \r | |
913 | TcpProto = (TCP4_PROTO_DATA *) TcpPcb->Sk->ProtoReserved;\r | |
914 | \r | |
915 | if (TcpProto->TcpService == Tcp4Service) {\r | |
916 | //\r | |
917 | // This tcp instance belongs to the Tcp4Service.\r | |
918 | //\r | |
919 | NumConfiguredInstance++;\r | |
920 | }\r | |
921 | }\r | |
922 | \r | |
923 | //\r | |
924 | // Go through the listening queue to count the instances.\r | |
925 | //\r | |
926 | NET_LIST_FOR_EACH (Entry, &mTcpListenQue) {\r | |
927 | TcpPcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
928 | \r | |
929 | TcpProto = (TCP4_PROTO_DATA *) TcpPcb->Sk->ProtoReserved;\r | |
930 | \r | |
931 | if (TcpProto->TcpService == Tcp4Service) {\r | |
932 | //\r | |
933 | // This tcp instance belongs to the Tcp4Service.\r | |
934 | //\r | |
935 | NumConfiguredInstance++;\r | |
936 | }\r | |
937 | }\r | |
938 | \r | |
939 | //\r | |
940 | // Calculate the size of the Tcp4VariableData. As there may be no Tcp4 child,\r | |
941 | // we should add extra buffer for the service points only if the number of configured\r | |
942 | // children is more than 1.\r | |
943 | //\r | |
944 | VariableDataSize = sizeof (EFI_TCP4_VARIABLE_DATA);\r | |
945 | \r | |
946 | if (NumConfiguredInstance > 1) {\r | |
947 | VariableDataSize += sizeof (EFI_TCP4_SERVICE_POINT) * (NumConfiguredInstance - 1);\r | |
948 | }\r | |
949 | \r | |
e48e37fc | 950 | Tcp4VariableData = AllocatePool (VariableDataSize);\r |
8a67d61d | 951 | if (Tcp4VariableData == NULL) {\r |
952 | return EFI_OUT_OF_RESOURCES;\r | |
953 | }\r | |
954 | \r | |
955 | Tcp4VariableData->DriverHandle = Tcp4Service->DriverBindingHandle;\r | |
956 | Tcp4VariableData->ServiceCount = NumConfiguredInstance;\r | |
957 | \r | |
958 | Tcp4ServicePoint = &Tcp4VariableData->Services[0];\r | |
959 | \r | |
960 | //\r | |
961 | // Go through the running queue to fill the service points.\r | |
962 | //\r | |
963 | NET_LIST_FOR_EACH (Entry, &mTcpRunQue) {\r | |
964 | TcpPcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
965 | \r | |
966 | TcpProto = (TCP4_PROTO_DATA *) TcpPcb->Sk->ProtoReserved;\r | |
967 | \r | |
968 | if (TcpProto->TcpService == Tcp4Service) {\r | |
969 | //\r | |
970 | // This tcp instance belongs to the Tcp4Service.\r | |
971 | //\r | |
972 | Tcp4ServicePoint->InstanceHandle = TcpPcb->Sk->SockHandle;\r | |
e48e37fc | 973 | CopyMem (&Tcp4ServicePoint->LocalAddress, &TcpPcb->LocalEnd.Ip, sizeof (EFI_IPv4_ADDRESS));\r |
8a67d61d | 974 | Tcp4ServicePoint->LocalPort = NTOHS (TcpPcb->LocalEnd.Port);\r |
e48e37fc | 975 | CopyMem (&Tcp4ServicePoint->RemoteAddress, &TcpPcb->RemoteEnd.Ip, sizeof (EFI_IPv4_ADDRESS));\r |
8a67d61d | 976 | Tcp4ServicePoint->RemotePort = NTOHS (TcpPcb->RemoteEnd.Port);\r |
977 | \r | |
978 | Tcp4ServicePoint++;\r | |
979 | }\r | |
980 | }\r | |
981 | \r | |
982 | //\r | |
983 | // Go through the listening queue to fill the service points.\r | |
984 | //\r | |
985 | NET_LIST_FOR_EACH (Entry, &mTcpListenQue) {\r | |
986 | TcpPcb = NET_LIST_USER_STRUCT (Entry, TCP_CB, List);\r | |
987 | \r | |
988 | TcpProto = (TCP4_PROTO_DATA *) TcpPcb->Sk->ProtoReserved;\r | |
989 | \r | |
990 | if (TcpProto->TcpService == Tcp4Service) {\r | |
991 | //\r | |
992 | // This tcp instance belongs to the Tcp4Service.\r | |
993 | //\r | |
994 | Tcp4ServicePoint->InstanceHandle = TcpPcb->Sk->SockHandle;\r | |
e48e37fc | 995 | CopyMem (&Tcp4ServicePoint->LocalAddress, &TcpPcb->LocalEnd.Ip, sizeof (EFI_IPv4_ADDRESS));\r |
8a67d61d | 996 | Tcp4ServicePoint->LocalPort = NTOHS (TcpPcb->LocalEnd.Port);\r |
e48e37fc | 997 | CopyMem (&Tcp4ServicePoint->RemoteAddress, &TcpPcb->RemoteEnd.Ip, sizeof (EFI_IPv4_ADDRESS));\r |
8a67d61d | 998 | Tcp4ServicePoint->RemotePort = NTOHS (TcpPcb->RemoteEnd.Port);\r |
999 | \r | |
1000 | Tcp4ServicePoint++;\r | |
1001 | }\r | |
1002 | }\r | |
1003 | \r | |
1004 | //\r | |
1005 | // Get the mac string.\r | |
1006 | //\r | |
1007 | Status = NetLibGetMacString (\r | |
1008 | Tcp4Service->ControllerHandle,\r | |
1009 | Tcp4Service->DriverBindingHandle,\r | |
1010 | &NewMacString\r | |
1011 | );\r | |
1012 | if (EFI_ERROR (Status)) {\r | |
1013 | goto ON_ERROR;\r | |
1014 | }\r | |
1015 | \r | |
1016 | if (Tcp4Service->MacString != NULL) {\r | |
1017 | //\r | |
1018 | // The variable is set already, we're going to update it.\r | |
1019 | //\r | |
1020 | if (StrCmp (Tcp4Service->MacString, NewMacString) != 0) {\r | |
1021 | //\r | |
1022 | // The mac address is changed, delete the previous variable first.\r | |
1023 | //\r | |
1024 | gRT->SetVariable (\r | |
1025 | Tcp4Service->MacString,\r | |
1026 | &gEfiTcp4ServiceBindingProtocolGuid,\r | |
1027 | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
1028 | 0,\r | |
1029 | NULL\r | |
1030 | );\r | |
1031 | }\r | |
1032 | \r | |
766c7483 | 1033 | FreePool (Tcp4Service->MacString);\r |
8a67d61d | 1034 | }\r |
1035 | \r | |
1036 | Tcp4Service->MacString = NewMacString;\r | |
1037 | \r | |
1038 | Status = gRT->SetVariable (\r | |
1039 | Tcp4Service->MacString,\r | |
1040 | &gEfiTcp4ServiceBindingProtocolGuid,\r | |
1041 | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
1042 | VariableDataSize,\r | |
1043 | (VOID *) Tcp4VariableData\r | |
1044 | );\r | |
1045 | \r | |
1046 | ON_ERROR:\r | |
1047 | \r | |
766c7483 | 1048 | FreePool (Tcp4VariableData);\r |
8a67d61d | 1049 | \r |
1050 | return Status;\r | |
1051 | }\r | |
1052 | \r | |
1053 | \r | |
1054 | /**\r | |
1055 | Clear the variable and free the resource.\r | |
1056 | \r | |
120db52c | 1057 | @param Tcp4Service Pointer to Tcp4 service data.\r |
8a67d61d | 1058 | \r |
1059 | **/\r | |
1060 | VOID\r | |
1061 | TcpClearVariableData (\r | |
1062 | IN TCP4_SERVICE_DATA *Tcp4Service\r | |
1063 | )\r | |
1064 | {\r | |
1065 | ASSERT (Tcp4Service->MacString != NULL);\r | |
1066 | \r | |
1067 | gRT->SetVariable (\r | |
1068 | Tcp4Service->MacString,\r | |
1069 | &gEfiTcp4ServiceBindingProtocolGuid,\r | |
1070 | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
1071 | 0,\r | |
1072 | NULL\r | |
1073 | );\r | |
1074 | \r | |
766c7483 | 1075 | FreePool (Tcp4Service->MacString);\r |
8a67d61d | 1076 | Tcp4Service->MacString = NULL;\r |
1077 | }\r | |
1078 | \r | |
120db52c | 1079 | /**\r |
e5e12de7 | 1080 | Install the device path protocol on the TCP instance.\r |
1081 | \r | |
120db52c | 1082 | @param Sock Pointer to the socket representing the TCP instance.\r |
e5e12de7 | 1083 | \r |
120db52c | 1084 | @retval EFI_SUCCESS The device path protocol is installed.\r |
1085 | @retval other Failed to install the device path protocol.\r | |
e5e12de7 | 1086 | \r |
120db52c | 1087 | **/\r |
1088 | EFI_STATUS\r | |
1089 | TcpInstallDevicePath (\r | |
1090 | IN SOCKET *Sock\r | |
1091 | )\r | |
e5e12de7 | 1092 | {\r |
1093 | TCP4_PROTO_DATA *TcpProto;\r | |
1094 | TCP4_SERVICE_DATA *TcpService;\r | |
1095 | TCP_CB *Tcb;\r | |
1096 | IPv4_DEVICE_PATH Ip4DPathNode;\r | |
1097 | EFI_STATUS Status;\r | |
1204fe83 | 1098 | TCP_PORTNO LocalPort;\r |
1099 | TCP_PORTNO RemotePort;\r | |
e5e12de7 | 1100 | \r |
1101 | TcpProto = (TCP4_PROTO_DATA *) Sock->ProtoReserved;\r | |
1102 | TcpService = TcpProto->TcpService;\r | |
1103 | Tcb = TcpProto->TcpPcb;\r | |
1104 | \r | |
1204fe83 | 1105 | LocalPort = NTOHS (Tcb->LocalEnd.Port);\r |
1106 | RemotePort = NTOHS (Tcb->RemoteEnd.Port);\r | |
e5e12de7 | 1107 | NetLibCreateIPv4DPathNode (\r |
1108 | &Ip4DPathNode,\r | |
1109 | TcpService->ControllerHandle,\r | |
1110 | Tcb->LocalEnd.Ip,\r | |
1204fe83 | 1111 | LocalPort,\r |
e5e12de7 | 1112 | Tcb->RemoteEnd.Ip,\r |
1204fe83 | 1113 | RemotePort,\r |
e5e12de7 | 1114 | EFI_IP_PROTO_TCP,\r |
1115 | Tcb->UseDefaultAddr\r | |
1116 | );\r | |
1117 | \r | |
1118 | Sock->DevicePath = AppendDevicePathNode (\r | |
120db52c | 1119 | Sock->ParentDevicePath,\r |
1120 | (EFI_DEVICE_PATH_PROTOCOL *) &Ip4DPathNode\r | |
1121 | );\r | |
e5e12de7 | 1122 | if (Sock->DevicePath == NULL) {\r |
1123 | return EFI_OUT_OF_RESOURCES;\r | |
1124 | }\r | |
1125 | \r | |
1126 | Status = gBS->InstallProtocolInterface (\r | |
1127 | &Sock->SockHandle,\r | |
1128 | &gEfiDevicePathProtocolGuid,\r | |
1129 | EFI_NATIVE_INTERFACE,\r | |
1130 | Sock->DevicePath\r | |
1131 | );\r | |
1132 | if (EFI_ERROR (Status)) {\r | |
766c7483 | 1133 | FreePool (Sock->DevicePath);\r |
e5e12de7 | 1134 | }\r |
1135 | \r | |
1136 | return Status;\r | |
1137 | }\r |