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d75a0b97 FB |
1 | /* |
2 | * libslirp glue | |
3 | * | |
4 | * Copyright (c) 2004-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
e1c5a2b3 | 24 | #include "qemu-common.h" |
0580ac91 | 25 | #include "qemu-char.h" |
f0cbd3ec | 26 | #include "slirp.h" |
062e5527 | 27 | #include "hw/hw.h" |
f0cbd3ec FB |
28 | |
29 | /* host address */ | |
30 | struct in_addr our_addr; | |
31 | /* host dns address */ | |
32 | struct in_addr dns_addr; | |
33 | /* host loopback address */ | |
34 | struct in_addr loopback_addr; | |
35 | ||
a13a4126 JK |
36 | /* virtual network configuration */ |
37 | struct in_addr vnetwork_addr; | |
38 | struct in_addr vnetwork_mask; | |
39 | struct in_addr vhost_addr; | |
40 | struct in_addr vdhcp_startaddr; | |
41 | struct in_addr vnameserver_addr; | |
42 | ||
43 | /* emulated hosts use the MAC addr 52:55:IP:IP:IP:IP */ | |
9634d903 | 44 | static const uint8_t special_ethaddr[6] = { |
a13a4126 | 45 | 0x52, 0x55, 0x00, 0x00, 0x00, 0x00 |
f0cbd3ec FB |
46 | }; |
47 | ||
de806f07 | 48 | /* ARP cache for the guest IP addresses (XXX: allow many entries) */ |
f0cbd3ec | 49 | uint8_t client_ethaddr[6]; |
de806f07 FB |
50 | static struct in_addr client_ipaddr; |
51 | ||
52 | static const uint8_t zero_ethaddr[6] = { 0, 0, 0, 0, 0, 0 }; | |
f0cbd3ec | 53 | |
a9ba3a85 | 54 | int slirp_restrict; |
f0cbd3ec | 55 | int link_up; |
a3d4af03 | 56 | struct ex_list *exec_list; |
f0cbd3ec FB |
57 | |
58 | /* XXX: suppress those select globals */ | |
59 | fd_set *global_readfds, *global_writefds, *global_xfds; | |
60 | ||
f1d99bbd JK |
61 | u_int curtime; |
62 | static u_int time_fasttimo, last_slowtimo; | |
63 | static int do_slowtimo; | |
64 | ||
3f423c9c | 65 | char slirp_hostname[33]; |
115defd1 | 66 | |
f0cbd3ec FB |
67 | #ifdef _WIN32 |
68 | ||
69 | static int get_dns_addr(struct in_addr *pdns_addr) | |
70 | { | |
379ff53d FB |
71 | FIXED_INFO *FixedInfo=NULL; |
72 | ULONG BufLen; | |
73 | DWORD ret; | |
74 | IP_ADDR_STRING *pIPAddr; | |
75 | struct in_addr tmp_addr; | |
3b46e624 | 76 | |
379ff53d FB |
77 | FixedInfo = (FIXED_INFO *)GlobalAlloc(GPTR, sizeof(FIXED_INFO)); |
78 | BufLen = sizeof(FIXED_INFO); | |
3b46e624 | 79 | |
379ff53d FB |
80 | if (ERROR_BUFFER_OVERFLOW == GetNetworkParams(FixedInfo, &BufLen)) { |
81 | if (FixedInfo) { | |
82 | GlobalFree(FixedInfo); | |
83 | FixedInfo = NULL; | |
84 | } | |
85 | FixedInfo = GlobalAlloc(GPTR, BufLen); | |
86 | } | |
5fafdf24 | 87 | |
379ff53d FB |
88 | if ((ret = GetNetworkParams(FixedInfo, &BufLen)) != ERROR_SUCCESS) { |
89 | printf("GetNetworkParams failed. ret = %08x\n", (u_int)ret ); | |
90 | if (FixedInfo) { | |
91 | GlobalFree(FixedInfo); | |
92 | FixedInfo = NULL; | |
93 | } | |
94 | return -1; | |
95 | } | |
3b46e624 | 96 | |
379ff53d FB |
97 | pIPAddr = &(FixedInfo->DnsServerList); |
98 | inet_aton(pIPAddr->IpAddress.String, &tmp_addr); | |
99 | *pdns_addr = tmp_addr; | |
379ff53d FB |
100 | if (FixedInfo) { |
101 | GlobalFree(FixedInfo); | |
102 | FixedInfo = NULL; | |
103 | } | |
104 | return 0; | |
f0cbd3ec FB |
105 | } |
106 | ||
df461894 JK |
107 | static void winsock_cleanup(void) |
108 | { | |
109 | WSACleanup(); | |
110 | } | |
111 | ||
f0cbd3ec FB |
112 | #else |
113 | ||
114 | static int get_dns_addr(struct in_addr *pdns_addr) | |
115 | { | |
116 | char buff[512]; | |
363a37d5 | 117 | char buff2[257]; |
f0cbd3ec FB |
118 | FILE *f; |
119 | int found = 0; | |
120 | struct in_addr tmp_addr; | |
3b46e624 | 121 | |
f0cbd3ec FB |
122 | f = fopen("/etc/resolv.conf", "r"); |
123 | if (!f) | |
124 | return -1; | |
125 | ||
31a60e22 | 126 | #ifdef DEBUG |
f0cbd3ec | 127 | lprint("IP address of your DNS(s): "); |
31a60e22 | 128 | #endif |
f0cbd3ec FB |
129 | while (fgets(buff, 512, f) != NULL) { |
130 | if (sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1) { | |
131 | if (!inet_aton(buff2, &tmp_addr)) | |
132 | continue; | |
133 | if (tmp_addr.s_addr == loopback_addr.s_addr) | |
134 | tmp_addr = our_addr; | |
135 | /* If it's the first one, set it to dns_addr */ | |
136 | if (!found) | |
137 | *pdns_addr = tmp_addr; | |
31a60e22 | 138 | #ifdef DEBUG |
f0cbd3ec FB |
139 | else |
140 | lprint(", "); | |
31a60e22 | 141 | #endif |
f0cbd3ec | 142 | if (++found > 3) { |
31a60e22 | 143 | #ifdef DEBUG |
f0cbd3ec | 144 | lprint("(more)"); |
31a60e22 | 145 | #endif |
f0cbd3ec | 146 | break; |
31a60e22 BS |
147 | } |
148 | #ifdef DEBUG | |
149 | else | |
f0cbd3ec | 150 | lprint("%s", inet_ntoa(tmp_addr)); |
31a60e22 | 151 | #endif |
f0cbd3ec FB |
152 | } |
153 | } | |
1d43a717 | 154 | fclose(f); |
f0cbd3ec FB |
155 | if (!found) |
156 | return -1; | |
157 | return 0; | |
158 | } | |
159 | ||
160 | #endif | |
161 | ||
df461894 | 162 | static void slirp_init_once(void) |
379ff53d | 163 | { |
df461894 JK |
164 | static int initialized; |
165 | struct hostent *he; | |
166 | char our_name[256]; | |
167 | #ifdef _WIN32 | |
168 | WSADATA Data; | |
379ff53d FB |
169 | #endif |
170 | ||
df461894 JK |
171 | if (initialized) { |
172 | return; | |
173 | } | |
174 | initialized = 1; | |
175 | ||
176 | #ifdef _WIN32 | |
177 | WSAStartup(MAKEWORD(2,0), &Data); | |
178 | atexit(winsock_cleanup); | |
179 | #endif | |
180 | ||
181 | loopback_addr.s_addr = htonl(INADDR_LOOPBACK); | |
182 | ||
183 | /* FIXME: This address may change during runtime */ | |
184 | if (gethostname(our_name, sizeof(our_name)) == 0) { | |
185 | he = gethostbyname(our_name); | |
186 | if (he) { | |
187 | our_addr = *(struct in_addr *)he->h_addr; | |
188 | } | |
189 | } | |
190 | if (our_addr.s_addr == 0) { | |
191 | our_addr = loopback_addr; | |
192 | } | |
193 | ||
194 | /* FIXME: This address may change during runtime */ | |
195 | if (get_dns_addr(&dns_addr) < 0) { | |
196 | dns_addr = loopback_addr; | |
197 | } | |
198 | } | |
199 | ||
062e5527 AL |
200 | static void slirp_state_save(QEMUFile *f, void *opaque); |
201 | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id); | |
202 | ||
c92ef6a2 JK |
203 | void slirp_init(int restricted, struct in_addr vnetwork, |
204 | struct in_addr vnetmask, struct in_addr vhost, | |
205 | const char *vhostname, const char *tftp_path, | |
206 | const char *bootfile, struct in_addr vdhcp_start, | |
207 | struct in_addr vnameserver) | |
f0cbd3ec | 208 | { |
df461894 | 209 | slirp_init_once(); |
379ff53d | 210 | |
f0cbd3ec | 211 | link_up = 1; |
511d2b14 | 212 | slirp_restrict = restricted; |
f0cbd3ec FB |
213 | |
214 | if_init(); | |
215 | ip_init(); | |
216 | ||
217 | /* Initialise mbufs *after* setting the MTU */ | |
218 | m_init(); | |
219 | ||
c92ef6a2 JK |
220 | vnetwork_addr = vnetwork; |
221 | vnetwork_mask = vnetmask; | |
222 | vhost_addr = vhost; | |
223 | if (vhostname) { | |
224 | pstrcpy(slirp_hostname, sizeof(slirp_hostname), vhostname); | |
a13a4126 | 225 | } |
ad196a9d JK |
226 | qemu_free(tftp_prefix); |
227 | tftp_prefix = NULL; | |
228 | if (tftp_path) { | |
229 | tftp_prefix = qemu_strdup(tftp_path); | |
230 | } | |
231 | qemu_free(bootp_filename); | |
232 | bootp_filename = NULL; | |
233 | if (bootfile) { | |
234 | bootp_filename = qemu_strdup(bootfile); | |
235 | } | |
c92ef6a2 JK |
236 | vdhcp_startaddr = vdhcp_start; |
237 | vnameserver_addr = vnameserver; | |
ad196a9d | 238 | |
285f7a62 | 239 | register_savevm("slirp", 0, 2, slirp_state_save, slirp_state_load, NULL); |
f0cbd3ec FB |
240 | } |
241 | ||
242 | #define CONN_CANFSEND(so) (((so)->so_state & (SS_FCANTSENDMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) | |
243 | #define CONN_CANFRCV(so) (((so)->so_state & (SS_FCANTRCVMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) | |
244 | #define UPD_NFDS(x) if (nfds < (x)) nfds = (x) | |
245 | ||
246 | /* | |
247 | * curtime kept to an accuracy of 1ms | |
248 | */ | |
379ff53d FB |
249 | #ifdef _WIN32 |
250 | static void updtime(void) | |
251 | { | |
252 | struct _timeb tb; | |
253 | ||
254 | _ftime(&tb); | |
8ec7f4ed JK |
255 | |
256 | curtime = tb.time * 1000 + tb.millitm; | |
379ff53d FB |
257 | } |
258 | #else | |
f0cbd3ec FB |
259 | static void updtime(void) |
260 | { | |
8ec7f4ed | 261 | struct timeval tv; |
5fafdf24 | 262 | |
8ec7f4ed | 263 | gettimeofday(&tv, NULL); |
5fafdf24 | 264 | |
8ec7f4ed | 265 | curtime = tv.tv_sec * 1000 + tv.tv_usec / 1000; |
f0cbd3ec | 266 | } |
379ff53d | 267 | #endif |
f0cbd3ec | 268 | |
5fafdf24 | 269 | void slirp_select_fill(int *pnfds, |
f0cbd3ec FB |
270 | fd_set *readfds, fd_set *writefds, fd_set *xfds) |
271 | { | |
272 | struct socket *so, *so_next; | |
f0cbd3ec | 273 | int nfds; |
f0cbd3ec | 274 | |
d918f23e JK |
275 | if (!link_up) { |
276 | return; | |
277 | } | |
278 | ||
f0cbd3ec FB |
279 | /* fail safe */ |
280 | global_readfds = NULL; | |
281 | global_writefds = NULL; | |
282 | global_xfds = NULL; | |
3b46e624 | 283 | |
f0cbd3ec FB |
284 | nfds = *pnfds; |
285 | /* | |
286 | * First, TCP sockets | |
287 | */ | |
288 | do_slowtimo = 0; | |
d918f23e | 289 | |
5fafdf24 | 290 | /* |
f0cbd3ec FB |
291 | * *_slowtimo needs calling if there are IP fragments |
292 | * in the fragment queue, or there are TCP connections active | |
293 | */ | |
294 | do_slowtimo = ((tcb.so_next != &tcb) || | |
429d0a3d | 295 | (&ipq.ip_link != ipq.ip_link.next)); |
3b46e624 | 296 | |
f0cbd3ec FB |
297 | for (so = tcb.so_next; so != &tcb; so = so_next) { |
298 | so_next = so->so_next; | |
3b46e624 | 299 | |
f0cbd3ec FB |
300 | /* |
301 | * See if we need a tcp_fasttimo | |
302 | */ | |
303 | if (time_fasttimo == 0 && so->so_tcpcb->t_flags & TF_DELACK) | |
304 | time_fasttimo = curtime; /* Flag when we want a fasttimo */ | |
3b46e624 | 305 | |
f0cbd3ec FB |
306 | /* |
307 | * NOFDREF can include still connecting to local-host, | |
308 | * newly socreated() sockets etc. Don't want to select these. | |
309 | */ | |
310 | if (so->so_state & SS_NOFDREF || so->s == -1) | |
311 | continue; | |
3b46e624 | 312 | |
f0cbd3ec FB |
313 | /* |
314 | * Set for reading sockets which are accepting | |
315 | */ | |
316 | if (so->so_state & SS_FACCEPTCONN) { | |
317 | FD_SET(so->s, readfds); | |
318 | UPD_NFDS(so->s); | |
319 | continue; | |
320 | } | |
3b46e624 | 321 | |
f0cbd3ec FB |
322 | /* |
323 | * Set for writing sockets which are connecting | |
324 | */ | |
325 | if (so->so_state & SS_ISFCONNECTING) { | |
326 | FD_SET(so->s, writefds); | |
327 | UPD_NFDS(so->s); | |
328 | continue; | |
329 | } | |
3b46e624 | 330 | |
f0cbd3ec FB |
331 | /* |
332 | * Set for writing if we are connected, can send more, and | |
333 | * we have something to send | |
334 | */ | |
335 | if (CONN_CANFSEND(so) && so->so_rcv.sb_cc) { | |
336 | FD_SET(so->s, writefds); | |
337 | UPD_NFDS(so->s); | |
338 | } | |
3b46e624 | 339 | |
f0cbd3ec FB |
340 | /* |
341 | * Set for reading (and urgent data) if we are connected, can | |
342 | * receive more, and we have room for it XXX /2 ? | |
343 | */ | |
344 | if (CONN_CANFRCV(so) && (so->so_snd.sb_cc < (so->so_snd.sb_datalen/2))) { | |
345 | FD_SET(so->s, readfds); | |
346 | FD_SET(so->s, xfds); | |
347 | UPD_NFDS(so->s); | |
348 | } | |
349 | } | |
3b46e624 | 350 | |
f0cbd3ec FB |
351 | /* |
352 | * UDP sockets | |
353 | */ | |
354 | for (so = udb.so_next; so != &udb; so = so_next) { | |
355 | so_next = so->so_next; | |
3b46e624 | 356 | |
f0cbd3ec FB |
357 | /* |
358 | * See if it's timed out | |
359 | */ | |
360 | if (so->so_expire) { | |
361 | if (so->so_expire <= curtime) { | |
362 | udp_detach(so); | |
363 | continue; | |
364 | } else | |
365 | do_slowtimo = 1; /* Let socket expire */ | |
366 | } | |
3b46e624 | 367 | |
f0cbd3ec FB |
368 | /* |
369 | * When UDP packets are received from over the | |
370 | * link, they're sendto()'d straight away, so | |
371 | * no need for setting for writing | |
372 | * Limit the number of packets queued by this session | |
373 | * to 4. Note that even though we try and limit this | |
374 | * to 4 packets, the session could have more queued | |
375 | * if the packets needed to be fragmented | |
376 | * (XXX <= 4 ?) | |
377 | */ | |
378 | if ((so->so_state & SS_ISFCONNECTED) && so->so_queued <= 4) { | |
379 | FD_SET(so->s, readfds); | |
380 | UPD_NFDS(so->s); | |
381 | } | |
382 | } | |
5fafdf24 | 383 | |
f0cbd3ec | 384 | *pnfds = nfds; |
5fafdf24 | 385 | } |
f0cbd3ec | 386 | |
d918f23e JK |
387 | void slirp_select_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds, |
388 | int select_error) | |
f0cbd3ec FB |
389 | { |
390 | struct socket *so, *so_next; | |
391 | int ret; | |
392 | ||
d918f23e JK |
393 | if (!link_up) { |
394 | return; | |
395 | } | |
396 | ||
f0cbd3ec FB |
397 | global_readfds = readfds; |
398 | global_writefds = writefds; | |
399 | global_xfds = xfds; | |
400 | ||
401 | /* Update time */ | |
402 | updtime(); | |
5fafdf24 | 403 | |
f0cbd3ec | 404 | /* |
5fafdf24 | 405 | * See if anything has timed out |
f0cbd3ec | 406 | */ |
df5f8956 | 407 | if (time_fasttimo && ((curtime - time_fasttimo) >= 2)) { |
f0cbd3ec FB |
408 | tcp_fasttimo(); |
409 | time_fasttimo = 0; | |
410 | } | |
411 | if (do_slowtimo && ((curtime - last_slowtimo) >= 499)) { | |
412 | ip_slowtimo(); | |
413 | tcp_slowtimo(); | |
414 | last_slowtimo = curtime; | |
415 | } | |
5fafdf24 | 416 | |
f0cbd3ec FB |
417 | /* |
418 | * Check sockets | |
419 | */ | |
d918f23e | 420 | if (!select_error) { |
f0cbd3ec FB |
421 | /* |
422 | * Check TCP sockets | |
423 | */ | |
424 | for (so = tcb.so_next; so != &tcb; so = so_next) { | |
425 | so_next = so->so_next; | |
3b46e624 | 426 | |
f0cbd3ec FB |
427 | /* |
428 | * FD_ISSET is meaningless on these sockets | |
429 | * (and they can crash the program) | |
430 | */ | |
431 | if (so->so_state & SS_NOFDREF || so->s == -1) | |
432 | continue; | |
3b46e624 | 433 | |
f0cbd3ec FB |
434 | /* |
435 | * Check for URG data | |
436 | * This will soread as well, so no need to | |
437 | * test for readfds below if this succeeds | |
438 | */ | |
439 | if (FD_ISSET(so->s, xfds)) | |
440 | sorecvoob(so); | |
441 | /* | |
442 | * Check sockets for reading | |
443 | */ | |
444 | else if (FD_ISSET(so->s, readfds)) { | |
445 | /* | |
446 | * Check for incoming connections | |
447 | */ | |
448 | if (so->so_state & SS_FACCEPTCONN) { | |
449 | tcp_connect(so); | |
450 | continue; | |
451 | } /* else */ | |
452 | ret = soread(so); | |
3b46e624 | 453 | |
f0cbd3ec FB |
454 | /* Output it if we read something */ |
455 | if (ret > 0) | |
456 | tcp_output(sototcpcb(so)); | |
457 | } | |
3b46e624 | 458 | |
f0cbd3ec FB |
459 | /* |
460 | * Check sockets for writing | |
461 | */ | |
462 | if (FD_ISSET(so->s, writefds)) { | |
463 | /* | |
464 | * Check for non-blocking, still-connecting sockets | |
465 | */ | |
466 | if (so->so_state & SS_ISFCONNECTING) { | |
467 | /* Connected */ | |
468 | so->so_state &= ~SS_ISFCONNECTING; | |
3b46e624 | 469 | |
0a656f5f | 470 | ret = send(so->s, (const void *) &ret, 0, 0); |
f0cbd3ec FB |
471 | if (ret < 0) { |
472 | /* XXXXX Must fix, zero bytes is a NOP */ | |
473 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
474 | errno == EINPROGRESS || errno == ENOTCONN) | |
475 | continue; | |
3b46e624 | 476 | |
f0cbd3ec | 477 | /* else failed */ |
f932b6ce JK |
478 | so->so_state &= SS_PERSISTENT_MASK; |
479 | so->so_state |= SS_NOFDREF; | |
f0cbd3ec FB |
480 | } |
481 | /* else so->so_state &= ~SS_ISFCONNECTING; */ | |
3b46e624 | 482 | |
f0cbd3ec FB |
483 | /* |
484 | * Continue tcp_input | |
485 | */ | |
486 | tcp_input((struct mbuf *)NULL, sizeof(struct ip), so); | |
487 | /* continue; */ | |
488 | } else | |
489 | ret = sowrite(so); | |
490 | /* | |
5fafdf24 | 491 | * XXXXX If we wrote something (a lot), there |
f0cbd3ec FB |
492 | * could be a need for a window update. |
493 | * In the worst case, the remote will send | |
494 | * a window probe to get things going again | |
495 | */ | |
496 | } | |
3b46e624 | 497 | |
f0cbd3ec FB |
498 | /* |
499 | * Probe a still-connecting, non-blocking socket | |
500 | * to check if it's still alive | |
501 | */ | |
502 | #ifdef PROBE_CONN | |
503 | if (so->so_state & SS_ISFCONNECTING) { | |
02d2c54c | 504 | ret = recv(so->s, (char *)&ret, 0,0); |
3b46e624 | 505 | |
f0cbd3ec FB |
506 | if (ret < 0) { |
507 | /* XXX */ | |
508 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
509 | errno == EINPROGRESS || errno == ENOTCONN) | |
510 | continue; /* Still connecting, continue */ | |
3b46e624 | 511 | |
f0cbd3ec | 512 | /* else failed */ |
f932b6ce JK |
513 | so->so_state &= SS_PERSISTENT_MASK; |
514 | so->so_state |= SS_NOFDREF; | |
3b46e624 | 515 | |
f0cbd3ec FB |
516 | /* tcp_input will take care of it */ |
517 | } else { | |
02d2c54c | 518 | ret = send(so->s, &ret, 0,0); |
f0cbd3ec FB |
519 | if (ret < 0) { |
520 | /* XXX */ | |
521 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
522 | errno == EINPROGRESS || errno == ENOTCONN) | |
523 | continue; | |
524 | /* else failed */ | |
f932b6ce JK |
525 | so->so_state &= SS_PERSISTENT_MASK; |
526 | so->so_state |= SS_NOFDREF; | |
f0cbd3ec FB |
527 | } else |
528 | so->so_state &= ~SS_ISFCONNECTING; | |
3b46e624 | 529 | |
f0cbd3ec FB |
530 | } |
531 | tcp_input((struct mbuf *)NULL, sizeof(struct ip),so); | |
532 | } /* SS_ISFCONNECTING */ | |
533 | #endif | |
534 | } | |
3b46e624 | 535 | |
f0cbd3ec FB |
536 | /* |
537 | * Now UDP sockets. | |
538 | * Incoming packets are sent straight away, they're not buffered. | |
539 | * Incoming UDP data isn't buffered either. | |
540 | */ | |
541 | for (so = udb.so_next; so != &udb; so = so_next) { | |
542 | so_next = so->so_next; | |
3b46e624 | 543 | |
f0cbd3ec FB |
544 | if (so->s != -1 && FD_ISSET(so->s, readfds)) { |
545 | sorecvfrom(so); | |
546 | } | |
547 | } | |
548 | } | |
5fafdf24 | 549 | |
f0cbd3ec FB |
550 | /* |
551 | * See if we can start outputting | |
552 | */ | |
d918f23e | 553 | if (if_queued) |
f0cbd3ec | 554 | if_start(); |
02d2c54c FB |
555 | |
556 | /* clear global file descriptor sets. | |
557 | * these reside on the stack in vl.c | |
558 | * so they're unusable if we're not in | |
559 | * slirp_select_fill or slirp_select_poll. | |
560 | */ | |
561 | global_readfds = NULL; | |
562 | global_writefds = NULL; | |
563 | global_xfds = NULL; | |
f0cbd3ec FB |
564 | } |
565 | ||
566 | #define ETH_ALEN 6 | |
567 | #define ETH_HLEN 14 | |
568 | ||
569 | #define ETH_P_IP 0x0800 /* Internet Protocol packet */ | |
570 | #define ETH_P_ARP 0x0806 /* Address Resolution packet */ | |
571 | ||
572 | #define ARPOP_REQUEST 1 /* ARP request */ | |
573 | #define ARPOP_REPLY 2 /* ARP reply */ | |
574 | ||
5fafdf24 | 575 | struct ethhdr |
f0cbd3ec FB |
576 | { |
577 | unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ | |
578 | unsigned char h_source[ETH_ALEN]; /* source ether addr */ | |
579 | unsigned short h_proto; /* packet type ID field */ | |
580 | }; | |
581 | ||
582 | struct arphdr | |
583 | { | |
584 | unsigned short ar_hrd; /* format of hardware address */ | |
585 | unsigned short ar_pro; /* format of protocol address */ | |
586 | unsigned char ar_hln; /* length of hardware address */ | |
587 | unsigned char ar_pln; /* length of protocol address */ | |
588 | unsigned short ar_op; /* ARP opcode (command) */ | |
589 | ||
590 | /* | |
591 | * Ethernet looks like this : This bit is variable sized however... | |
592 | */ | |
593 | unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */ | |
a13a4126 | 594 | uint32_t ar_sip; /* sender IP address */ |
f0cbd3ec | 595 | unsigned char ar_tha[ETH_ALEN]; /* target hardware address */ |
a13a4126 JK |
596 | uint32_t ar_tip ; /* target IP address */ |
597 | } __attribute__((packed)); | |
f0cbd3ec | 598 | |
8fcd3692 | 599 | static void arp_input(const uint8_t *pkt, int pkt_len) |
f0cbd3ec FB |
600 | { |
601 | struct ethhdr *eh = (struct ethhdr *)pkt; | |
602 | struct arphdr *ah = (struct arphdr *)(pkt + ETH_HLEN); | |
603 | uint8_t arp_reply[ETH_HLEN + sizeof(struct arphdr)]; | |
604 | struct ethhdr *reh = (struct ethhdr *)arp_reply; | |
605 | struct arphdr *rah = (struct arphdr *)(arp_reply + ETH_HLEN); | |
606 | int ar_op; | |
a3d4af03 | 607 | struct ex_list *ex_ptr; |
f0cbd3ec FB |
608 | |
609 | ar_op = ntohs(ah->ar_op); | |
610 | switch(ar_op) { | |
611 | case ARPOP_REQUEST: | |
a13a4126 JK |
612 | if ((ah->ar_tip & vnetwork_mask.s_addr) == vnetwork_addr.s_addr) { |
613 | if (ah->ar_tip == vnameserver_addr.s_addr || | |
614 | ah->ar_tip == vhost_addr.s_addr) | |
a3d4af03 FB |
615 | goto arp_ok; |
616 | for (ex_ptr = exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { | |
a13a4126 | 617 | if (ex_ptr->ex_addr.s_addr == ah->ar_tip) |
a3d4af03 FB |
618 | goto arp_ok; |
619 | } | |
620 | return; | |
621 | arp_ok: | |
f0cbd3ec FB |
622 | /* XXX: make an ARP request to have the client address */ |
623 | memcpy(client_ethaddr, eh->h_source, ETH_ALEN); | |
624 | ||
625 | /* ARP request for alias/dns mac address */ | |
626 | memcpy(reh->h_dest, pkt + ETH_ALEN, ETH_ALEN); | |
a13a4126 JK |
627 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); |
628 | memcpy(&reh->h_source[2], &ah->ar_tip, 4); | |
f0cbd3ec FB |
629 | reh->h_proto = htons(ETH_P_ARP); |
630 | ||
631 | rah->ar_hrd = htons(1); | |
632 | rah->ar_pro = htons(ETH_P_IP); | |
633 | rah->ar_hln = ETH_ALEN; | |
634 | rah->ar_pln = 4; | |
635 | rah->ar_op = htons(ARPOP_REPLY); | |
636 | memcpy(rah->ar_sha, reh->h_source, ETH_ALEN); | |
a13a4126 | 637 | rah->ar_sip = ah->ar_tip; |
f0cbd3ec | 638 | memcpy(rah->ar_tha, ah->ar_sha, ETH_ALEN); |
a13a4126 | 639 | rah->ar_tip = ah->ar_sip; |
f0cbd3ec FB |
640 | slirp_output(arp_reply, sizeof(arp_reply)); |
641 | } | |
642 | break; | |
de806f07 FB |
643 | case ARPOP_REPLY: |
644 | /* reply to request of client mac address ? */ | |
645 | if (!memcmp(client_ethaddr, zero_ethaddr, ETH_ALEN) && | |
a13a4126 | 646 | ah->ar_sip == client_ipaddr.s_addr) { |
de806f07 FB |
647 | memcpy(client_ethaddr, ah->ar_sha, ETH_ALEN); |
648 | } | |
649 | break; | |
f0cbd3ec FB |
650 | default: |
651 | break; | |
652 | } | |
653 | } | |
654 | ||
655 | void slirp_input(const uint8_t *pkt, int pkt_len) | |
656 | { | |
657 | struct mbuf *m; | |
658 | int proto; | |
659 | ||
660 | if (pkt_len < ETH_HLEN) | |
661 | return; | |
3b46e624 | 662 | |
f0cbd3ec FB |
663 | proto = ntohs(*(uint16_t *)(pkt + 12)); |
664 | switch(proto) { | |
665 | case ETH_P_ARP: | |
666 | arp_input(pkt, pkt_len); | |
667 | break; | |
668 | case ETH_P_IP: | |
669 | m = m_get(); | |
670 | if (!m) | |
671 | return; | |
38f3e7c2 | 672 | /* Note: we add to align the IP header */ |
e8e880a7 AJ |
673 | if (M_FREEROOM(m) < pkt_len + 2) { |
674 | m_inc(m, pkt_len + 2); | |
675 | } | |
38f3e7c2 FB |
676 | m->m_len = pkt_len + 2; |
677 | memcpy(m->m_data + 2, pkt, pkt_len); | |
f0cbd3ec | 678 | |
38f3e7c2 FB |
679 | m->m_data += 2 + ETH_HLEN; |
680 | m->m_len -= 2 + ETH_HLEN; | |
f0cbd3ec FB |
681 | |
682 | ip_input(m); | |
683 | break; | |
684 | default: | |
685 | break; | |
686 | } | |
687 | } | |
688 | ||
689 | /* output the IP packet to the ethernet device */ | |
690 | void if_encap(const uint8_t *ip_data, int ip_data_len) | |
691 | { | |
692 | uint8_t buf[1600]; | |
693 | struct ethhdr *eh = (struct ethhdr *)buf; | |
694 | ||
695 | if (ip_data_len + ETH_HLEN > sizeof(buf)) | |
696 | return; | |
de806f07 FB |
697 | |
698 | if (!memcmp(client_ethaddr, zero_ethaddr, ETH_ALEN)) { | |
699 | uint8_t arp_req[ETH_HLEN + sizeof(struct arphdr)]; | |
700 | struct ethhdr *reh = (struct ethhdr *)arp_req; | |
701 | struct arphdr *rah = (struct arphdr *)(arp_req + ETH_HLEN); | |
702 | const struct ip *iph = (const struct ip *)ip_data; | |
703 | ||
704 | /* If the client addr is not known, there is no point in | |
705 | sending the packet to it. Normally the sender should have | |
706 | done an ARP request to get its MAC address. Here we do it | |
707 | in place of sending the packet and we hope that the sender | |
708 | will retry sending its packet. */ | |
709 | memset(reh->h_dest, 0xff, ETH_ALEN); | |
a13a4126 JK |
710 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); |
711 | memcpy(&reh->h_source[2], &vhost_addr, 4); | |
de806f07 FB |
712 | reh->h_proto = htons(ETH_P_ARP); |
713 | rah->ar_hrd = htons(1); | |
714 | rah->ar_pro = htons(ETH_P_IP); | |
715 | rah->ar_hln = ETH_ALEN; | |
716 | rah->ar_pln = 4; | |
717 | rah->ar_op = htons(ARPOP_REQUEST); | |
718 | /* source hw addr */ | |
a13a4126 JK |
719 | memcpy(rah->ar_sha, special_ethaddr, ETH_ALEN - 4); |
720 | memcpy(&rah->ar_sha[2], &vhost_addr, 4); | |
de806f07 | 721 | /* source IP */ |
a13a4126 | 722 | rah->ar_sip = vhost_addr.s_addr; |
de806f07 FB |
723 | /* target hw addr (none) */ |
724 | memset(rah->ar_tha, 0, ETH_ALEN); | |
725 | /* target IP */ | |
a13a4126 | 726 | rah->ar_tip = iph->ip_dst.s_addr; |
de806f07 FB |
727 | client_ipaddr = iph->ip_dst; |
728 | slirp_output(arp_req, sizeof(arp_req)); | |
729 | } else { | |
730 | memcpy(eh->h_dest, client_ethaddr, ETH_ALEN); | |
a13a4126 | 731 | memcpy(eh->h_source, special_ethaddr, ETH_ALEN - 4); |
de806f07 | 732 | /* XXX: not correct */ |
a13a4126 | 733 | memcpy(&eh->h_source[2], &vhost_addr, 4); |
de806f07 FB |
734 | eh->h_proto = htons(ETH_P_IP); |
735 | memcpy(buf + sizeof(struct ethhdr), ip_data, ip_data_len); | |
736 | slirp_output(buf, ip_data_len + ETH_HLEN); | |
737 | } | |
f0cbd3ec | 738 | } |
9bf05444 | 739 | |
9c12a6f2 | 740 | /* Drop host forwarding rule, return 0 if found. */ |
3c6a0580 | 741 | int slirp_remove_hostfwd(int is_udp, struct in_addr host_addr, int host_port) |
c1261d8d AG |
742 | { |
743 | struct socket *so; | |
744 | struct socket *head = (is_udp ? &udb : &tcb); | |
2ad82cf9 JK |
745 | struct sockaddr_in addr; |
746 | int port = htons(host_port); | |
747 | socklen_t addr_len; | |
c1261d8d | 748 | |
c1261d8d | 749 | for (so = head->so_next; so != head; so = so->so_next) { |
2ad82cf9 | 750 | addr_len = sizeof(addr); |
9c12a6f2 JK |
751 | if ((so->so_state & SS_HOSTFWD) && |
752 | getsockname(so->s, (struct sockaddr *)&addr, &addr_len) == 0 && | |
3c6a0580 | 753 | addr.sin_addr.s_addr == host_addr.s_addr && |
2ad82cf9 | 754 | addr.sin_port == port) { |
c1261d8d AG |
755 | close(so->s); |
756 | sofree(so); | |
9c12a6f2 | 757 | return 0; |
c1261d8d AG |
758 | } |
759 | } | |
760 | ||
9c12a6f2 | 761 | return -1; |
c1261d8d AG |
762 | } |
763 | ||
3c6a0580 | 764 | int slirp_add_hostfwd(int is_udp, struct in_addr host_addr, int host_port, |
c92ef6a2 | 765 | struct in_addr guest_addr, int guest_port) |
9bf05444 | 766 | { |
a13a4126 JK |
767 | if (!guest_addr.s_addr) { |
768 | guest_addr = vdhcp_startaddr; | |
769 | } | |
9bf05444 | 770 | if (is_udp) { |
3c6a0580 | 771 | if (!udp_listen(host_addr.s_addr, htons(host_port), guest_addr.s_addr, |
6dd5ffb6 | 772 | htons(guest_port), SS_HOSTFWD)) |
9bf05444 FB |
773 | return -1; |
774 | } else { | |
3c6a0580 | 775 | if (!tcp_listen(host_addr.s_addr, htons(host_port), guest_addr.s_addr, |
6dd5ffb6 | 776 | htons(guest_port), SS_HOSTFWD)) |
9bf05444 FB |
777 | return -1; |
778 | } | |
779 | return 0; | |
780 | } | |
a3d4af03 | 781 | |
c92ef6a2 JK |
782 | int slirp_add_exec(int do_pty, const void *args, struct in_addr guest_addr, |
783 | int guest_port) | |
a3d4af03 | 784 | { |
c92ef6a2 JK |
785 | if (!guest_addr.s_addr) { |
786 | guest_addr.s_addr = | |
787 | vnetwork_addr.s_addr | (htonl(0x0204) & ~vnetwork_mask.s_addr); | |
788 | } | |
a13a4126 JK |
789 | if ((guest_addr.s_addr & vnetwork_mask.s_addr) != vnetwork_addr.s_addr || |
790 | guest_addr.s_addr == vhost_addr.s_addr || | |
791 | guest_addr.s_addr == vnameserver_addr.s_addr) { | |
792 | return -1; | |
793 | } | |
794 | return add_exec(&exec_list, do_pty, (char *)args, guest_addr, | |
795 | htons(guest_port)); | |
a3d4af03 | 796 | } |
e1c5a2b3 AL |
797 | |
798 | ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags) | |
799 | { | |
800 | if (so->s == -1 && so->extra) { | |
801 | qemu_chr_write(so->extra, buf, len); | |
802 | return len; | |
803 | } | |
804 | ||
805 | return send(so->s, buf, len, flags); | |
806 | } | |
807 | ||
a13a4126 JK |
808 | static struct socket * |
809 | slirp_find_ctl_socket(struct in_addr guest_addr, int guest_port) | |
e1c5a2b3 | 810 | { |
a13a4126 | 811 | struct socket *so; |
e1c5a2b3 | 812 | |
a13a4126 JK |
813 | for (so = tcb.so_next; so != &tcb; so = so->so_next) { |
814 | if (so->so_faddr.s_addr == guest_addr.s_addr && | |
815 | htons(so->so_fport) == guest_port) { | |
816 | return so; | |
817 | } | |
818 | } | |
819 | return NULL; | |
e1c5a2b3 AL |
820 | } |
821 | ||
c92ef6a2 | 822 | size_t slirp_socket_can_recv(struct in_addr guest_addr, int guest_port) |
e1c5a2b3 AL |
823 | { |
824 | struct iovec iov[2]; | |
825 | struct socket *so; | |
826 | ||
827 | if (!link_up) | |
828 | return 0; | |
829 | ||
a13a4126 | 830 | so = slirp_find_ctl_socket(guest_addr, guest_port); |
e1c5a2b3 AL |
831 | |
832 | if (!so || so->so_state & SS_NOFDREF) | |
833 | return 0; | |
834 | ||
835 | if (!CONN_CANFRCV(so) || so->so_snd.sb_cc >= (so->so_snd.sb_datalen/2)) | |
836 | return 0; | |
837 | ||
838 | return sopreprbuf(so, iov, NULL); | |
839 | } | |
840 | ||
c92ef6a2 JK |
841 | void slirp_socket_recv(struct in_addr guest_addr, int guest_port, |
842 | const uint8_t *buf, int size) | |
e1c5a2b3 AL |
843 | { |
844 | int ret; | |
a13a4126 JK |
845 | struct socket *so = slirp_find_ctl_socket(guest_addr, guest_port); |
846 | ||
e1c5a2b3 AL |
847 | if (!so) |
848 | return; | |
849 | ||
0580ac91 | 850 | ret = soreadbuf(so, (const char *)buf, size); |
e1c5a2b3 AL |
851 | |
852 | if (ret > 0) | |
853 | tcp_output(sototcpcb(so)); | |
854 | } | |
062e5527 AL |
855 | |
856 | static void slirp_tcp_save(QEMUFile *f, struct tcpcb *tp) | |
857 | { | |
858 | int i; | |
859 | ||
860 | qemu_put_sbe16(f, tp->t_state); | |
861 | for (i = 0; i < TCPT_NTIMERS; i++) | |
862 | qemu_put_sbe16(f, tp->t_timer[i]); | |
863 | qemu_put_sbe16(f, tp->t_rxtshift); | |
864 | qemu_put_sbe16(f, tp->t_rxtcur); | |
865 | qemu_put_sbe16(f, tp->t_dupacks); | |
866 | qemu_put_be16(f, tp->t_maxseg); | |
867 | qemu_put_sbyte(f, tp->t_force); | |
868 | qemu_put_be16(f, tp->t_flags); | |
869 | qemu_put_be32(f, tp->snd_una); | |
870 | qemu_put_be32(f, tp->snd_nxt); | |
871 | qemu_put_be32(f, tp->snd_up); | |
872 | qemu_put_be32(f, tp->snd_wl1); | |
873 | qemu_put_be32(f, tp->snd_wl2); | |
874 | qemu_put_be32(f, tp->iss); | |
875 | qemu_put_be32(f, tp->snd_wnd); | |
876 | qemu_put_be32(f, tp->rcv_wnd); | |
877 | qemu_put_be32(f, tp->rcv_nxt); | |
878 | qemu_put_be32(f, tp->rcv_up); | |
879 | qemu_put_be32(f, tp->irs); | |
880 | qemu_put_be32(f, tp->rcv_adv); | |
881 | qemu_put_be32(f, tp->snd_max); | |
882 | qemu_put_be32(f, tp->snd_cwnd); | |
883 | qemu_put_be32(f, tp->snd_ssthresh); | |
884 | qemu_put_sbe16(f, tp->t_idle); | |
885 | qemu_put_sbe16(f, tp->t_rtt); | |
886 | qemu_put_be32(f, tp->t_rtseq); | |
887 | qemu_put_sbe16(f, tp->t_srtt); | |
888 | qemu_put_sbe16(f, tp->t_rttvar); | |
889 | qemu_put_be16(f, tp->t_rttmin); | |
890 | qemu_put_be32(f, tp->max_sndwnd); | |
891 | qemu_put_byte(f, tp->t_oobflags); | |
892 | qemu_put_byte(f, tp->t_iobc); | |
893 | qemu_put_sbe16(f, tp->t_softerror); | |
894 | qemu_put_byte(f, tp->snd_scale); | |
895 | qemu_put_byte(f, tp->rcv_scale); | |
896 | qemu_put_byte(f, tp->request_r_scale); | |
897 | qemu_put_byte(f, tp->requested_s_scale); | |
898 | qemu_put_be32(f, tp->ts_recent); | |
899 | qemu_put_be32(f, tp->ts_recent_age); | |
900 | qemu_put_be32(f, tp->last_ack_sent); | |
901 | } | |
902 | ||
903 | static void slirp_sbuf_save(QEMUFile *f, struct sbuf *sbuf) | |
904 | { | |
905 | uint32_t off; | |
906 | ||
907 | qemu_put_be32(f, sbuf->sb_cc); | |
908 | qemu_put_be32(f, sbuf->sb_datalen); | |
909 | off = (uint32_t)(sbuf->sb_wptr - sbuf->sb_data); | |
910 | qemu_put_sbe32(f, off); | |
911 | off = (uint32_t)(sbuf->sb_rptr - sbuf->sb_data); | |
912 | qemu_put_sbe32(f, off); | |
913 | qemu_put_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); | |
914 | } | |
915 | ||
916 | static void slirp_socket_save(QEMUFile *f, struct socket *so) | |
917 | { | |
918 | qemu_put_be32(f, so->so_urgc); | |
919 | qemu_put_be32(f, so->so_faddr.s_addr); | |
920 | qemu_put_be32(f, so->so_laddr.s_addr); | |
921 | qemu_put_be16(f, so->so_fport); | |
922 | qemu_put_be16(f, so->so_lport); | |
923 | qemu_put_byte(f, so->so_iptos); | |
924 | qemu_put_byte(f, so->so_emu); | |
925 | qemu_put_byte(f, so->so_type); | |
926 | qemu_put_be32(f, so->so_state); | |
927 | slirp_sbuf_save(f, &so->so_rcv); | |
928 | slirp_sbuf_save(f, &so->so_snd); | |
929 | slirp_tcp_save(f, so->so_tcpcb); | |
930 | } | |
931 | ||
932 | static void slirp_state_save(QEMUFile *f, void *opaque) | |
933 | { | |
934 | struct ex_list *ex_ptr; | |
935 | ||
936 | for (ex_ptr = exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) | |
937 | if (ex_ptr->ex_pty == 3) { | |
938 | struct socket *so; | |
939 | so = slirp_find_ctl_socket(ex_ptr->ex_addr, ntohs(ex_ptr->ex_fport)); | |
940 | if (!so) | |
941 | continue; | |
942 | ||
943 | qemu_put_byte(f, 42); | |
944 | slirp_socket_save(f, so); | |
945 | } | |
946 | qemu_put_byte(f, 0); | |
285f7a62 JK |
947 | |
948 | qemu_put_be16(f, ip_id); | |
062e5527 AL |
949 | } |
950 | ||
951 | static void slirp_tcp_load(QEMUFile *f, struct tcpcb *tp) | |
952 | { | |
953 | int i; | |
954 | ||
955 | tp->t_state = qemu_get_sbe16(f); | |
956 | for (i = 0; i < TCPT_NTIMERS; i++) | |
957 | tp->t_timer[i] = qemu_get_sbe16(f); | |
958 | tp->t_rxtshift = qemu_get_sbe16(f); | |
959 | tp->t_rxtcur = qemu_get_sbe16(f); | |
960 | tp->t_dupacks = qemu_get_sbe16(f); | |
961 | tp->t_maxseg = qemu_get_be16(f); | |
962 | tp->t_force = qemu_get_sbyte(f); | |
963 | tp->t_flags = qemu_get_be16(f); | |
964 | tp->snd_una = qemu_get_be32(f); | |
965 | tp->snd_nxt = qemu_get_be32(f); | |
966 | tp->snd_up = qemu_get_be32(f); | |
967 | tp->snd_wl1 = qemu_get_be32(f); | |
968 | tp->snd_wl2 = qemu_get_be32(f); | |
969 | tp->iss = qemu_get_be32(f); | |
970 | tp->snd_wnd = qemu_get_be32(f); | |
971 | tp->rcv_wnd = qemu_get_be32(f); | |
972 | tp->rcv_nxt = qemu_get_be32(f); | |
973 | tp->rcv_up = qemu_get_be32(f); | |
974 | tp->irs = qemu_get_be32(f); | |
975 | tp->rcv_adv = qemu_get_be32(f); | |
976 | tp->snd_max = qemu_get_be32(f); | |
977 | tp->snd_cwnd = qemu_get_be32(f); | |
978 | tp->snd_ssthresh = qemu_get_be32(f); | |
979 | tp->t_idle = qemu_get_sbe16(f); | |
980 | tp->t_rtt = qemu_get_sbe16(f); | |
981 | tp->t_rtseq = qemu_get_be32(f); | |
982 | tp->t_srtt = qemu_get_sbe16(f); | |
983 | tp->t_rttvar = qemu_get_sbe16(f); | |
984 | tp->t_rttmin = qemu_get_be16(f); | |
985 | tp->max_sndwnd = qemu_get_be32(f); | |
986 | tp->t_oobflags = qemu_get_byte(f); | |
987 | tp->t_iobc = qemu_get_byte(f); | |
988 | tp->t_softerror = qemu_get_sbe16(f); | |
989 | tp->snd_scale = qemu_get_byte(f); | |
990 | tp->rcv_scale = qemu_get_byte(f); | |
991 | tp->request_r_scale = qemu_get_byte(f); | |
992 | tp->requested_s_scale = qemu_get_byte(f); | |
993 | tp->ts_recent = qemu_get_be32(f); | |
994 | tp->ts_recent_age = qemu_get_be32(f); | |
995 | tp->last_ack_sent = qemu_get_be32(f); | |
996 | tcp_template(tp); | |
997 | } | |
998 | ||
999 | static int slirp_sbuf_load(QEMUFile *f, struct sbuf *sbuf) | |
1000 | { | |
1001 | uint32_t off, sb_cc, sb_datalen; | |
1002 | ||
1003 | sb_cc = qemu_get_be32(f); | |
1004 | sb_datalen = qemu_get_be32(f); | |
1005 | ||
1006 | sbreserve(sbuf, sb_datalen); | |
1007 | ||
1008 | if (sbuf->sb_datalen != sb_datalen) | |
1009 | return -ENOMEM; | |
1010 | ||
1011 | sbuf->sb_cc = sb_cc; | |
1012 | ||
1013 | off = qemu_get_sbe32(f); | |
1014 | sbuf->sb_wptr = sbuf->sb_data + off; | |
1015 | off = qemu_get_sbe32(f); | |
1016 | sbuf->sb_rptr = sbuf->sb_data + off; | |
1017 | qemu_get_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); | |
1018 | ||
1019 | return 0; | |
1020 | } | |
1021 | ||
1022 | static int slirp_socket_load(QEMUFile *f, struct socket *so) | |
1023 | { | |
1024 | if (tcp_attach(so) < 0) | |
1025 | return -ENOMEM; | |
1026 | ||
1027 | so->so_urgc = qemu_get_be32(f); | |
1028 | so->so_faddr.s_addr = qemu_get_be32(f); | |
1029 | so->so_laddr.s_addr = qemu_get_be32(f); | |
1030 | so->so_fport = qemu_get_be16(f); | |
1031 | so->so_lport = qemu_get_be16(f); | |
1032 | so->so_iptos = qemu_get_byte(f); | |
1033 | so->so_emu = qemu_get_byte(f); | |
1034 | so->so_type = qemu_get_byte(f); | |
1035 | so->so_state = qemu_get_be32(f); | |
1036 | if (slirp_sbuf_load(f, &so->so_rcv) < 0) | |
1037 | return -ENOMEM; | |
1038 | if (slirp_sbuf_load(f, &so->so_snd) < 0) | |
1039 | return -ENOMEM; | |
1040 | slirp_tcp_load(f, so->so_tcpcb); | |
1041 | ||
1042 | return 0; | |
1043 | } | |
1044 | ||
1045 | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id) | |
1046 | { | |
1047 | struct ex_list *ex_ptr; | |
1048 | int r; | |
1049 | ||
1050 | while ((r = qemu_get_byte(f))) { | |
1051 | int ret; | |
1052 | struct socket *so = socreate(); | |
1053 | ||
1054 | if (!so) | |
1055 | return -ENOMEM; | |
1056 | ||
1057 | ret = slirp_socket_load(f, so); | |
1058 | ||
1059 | if (ret < 0) | |
1060 | return ret; | |
1061 | ||
a13a4126 JK |
1062 | if ((so->so_faddr.s_addr & vnetwork_mask.s_addr) != |
1063 | vnetwork_addr.s_addr) { | |
062e5527 | 1064 | return -EINVAL; |
a13a4126 JK |
1065 | } |
1066 | for (ex_ptr = exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { | |
062e5527 | 1067 | if (ex_ptr->ex_pty == 3 && |
a13a4126 JK |
1068 | so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr && |
1069 | so->so_fport == ex_ptr->ex_fport) { | |
062e5527 | 1070 | break; |
a13a4126 JK |
1071 | } |
1072 | } | |
062e5527 AL |
1073 | if (!ex_ptr) |
1074 | return -EINVAL; | |
1075 | ||
0580ac91 | 1076 | so->extra = (void *)ex_ptr->ex_exec; |
062e5527 AL |
1077 | } |
1078 | ||
285f7a62 JK |
1079 | if (version_id >= 2) { |
1080 | ip_id = qemu_get_be16(f); | |
1081 | } | |
1082 | ||
062e5527 AL |
1083 | return 0; |
1084 | } |