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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 | 36 | /* emulated hosts use the MAC addr 52:55:IP:IP:IP:IP */ |
9634d903 | 37 | static const uint8_t special_ethaddr[6] = { |
a13a4126 | 38 | 0x52, 0x55, 0x00, 0x00, 0x00, 0x00 |
f0cbd3ec FB |
39 | }; |
40 | ||
de806f07 | 41 | static const uint8_t zero_ethaddr[6] = { 0, 0, 0, 0, 0, 0 }; |
f0cbd3ec | 42 | |
f0cbd3ec FB |
43 | /* XXX: suppress those select globals */ |
44 | fd_set *global_readfds, *global_writefds, *global_xfds; | |
45 | ||
f1d99bbd JK |
46 | u_int curtime; |
47 | static u_int time_fasttimo, last_slowtimo; | |
48 | static int do_slowtimo; | |
49 | ||
b1c99fcd JK |
50 | TAILQ_HEAD(slirp_instances, Slirp) slirp_instances = |
51 | TAILQ_HEAD_INITIALIZER(slirp_instances); | |
115defd1 | 52 | |
f0cbd3ec FB |
53 | #ifdef _WIN32 |
54 | ||
55 | static int get_dns_addr(struct in_addr *pdns_addr) | |
56 | { | |
379ff53d FB |
57 | FIXED_INFO *FixedInfo=NULL; |
58 | ULONG BufLen; | |
59 | DWORD ret; | |
60 | IP_ADDR_STRING *pIPAddr; | |
61 | struct in_addr tmp_addr; | |
3b46e624 | 62 | |
379ff53d FB |
63 | FixedInfo = (FIXED_INFO *)GlobalAlloc(GPTR, sizeof(FIXED_INFO)); |
64 | BufLen = sizeof(FIXED_INFO); | |
3b46e624 | 65 | |
379ff53d FB |
66 | if (ERROR_BUFFER_OVERFLOW == GetNetworkParams(FixedInfo, &BufLen)) { |
67 | if (FixedInfo) { | |
68 | GlobalFree(FixedInfo); | |
69 | FixedInfo = NULL; | |
70 | } | |
71 | FixedInfo = GlobalAlloc(GPTR, BufLen); | |
72 | } | |
5fafdf24 | 73 | |
379ff53d FB |
74 | if ((ret = GetNetworkParams(FixedInfo, &BufLen)) != ERROR_SUCCESS) { |
75 | printf("GetNetworkParams failed. ret = %08x\n", (u_int)ret ); | |
76 | if (FixedInfo) { | |
77 | GlobalFree(FixedInfo); | |
78 | FixedInfo = NULL; | |
79 | } | |
80 | return -1; | |
81 | } | |
3b46e624 | 82 | |
379ff53d FB |
83 | pIPAddr = &(FixedInfo->DnsServerList); |
84 | inet_aton(pIPAddr->IpAddress.String, &tmp_addr); | |
85 | *pdns_addr = tmp_addr; | |
379ff53d FB |
86 | if (FixedInfo) { |
87 | GlobalFree(FixedInfo); | |
88 | FixedInfo = NULL; | |
89 | } | |
90 | return 0; | |
f0cbd3ec FB |
91 | } |
92 | ||
df461894 JK |
93 | static void winsock_cleanup(void) |
94 | { | |
95 | WSACleanup(); | |
96 | } | |
97 | ||
f0cbd3ec FB |
98 | #else |
99 | ||
100 | static int get_dns_addr(struct in_addr *pdns_addr) | |
101 | { | |
102 | char buff[512]; | |
363a37d5 | 103 | char buff2[257]; |
f0cbd3ec FB |
104 | FILE *f; |
105 | int found = 0; | |
106 | struct in_addr tmp_addr; | |
3b46e624 | 107 | |
f0cbd3ec FB |
108 | f = fopen("/etc/resolv.conf", "r"); |
109 | if (!f) | |
110 | return -1; | |
111 | ||
31a60e22 | 112 | #ifdef DEBUG |
f0cbd3ec | 113 | lprint("IP address of your DNS(s): "); |
31a60e22 | 114 | #endif |
f0cbd3ec FB |
115 | while (fgets(buff, 512, f) != NULL) { |
116 | if (sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1) { | |
117 | if (!inet_aton(buff2, &tmp_addr)) | |
118 | continue; | |
119 | if (tmp_addr.s_addr == loopback_addr.s_addr) | |
120 | tmp_addr = our_addr; | |
121 | /* If it's the first one, set it to dns_addr */ | |
122 | if (!found) | |
123 | *pdns_addr = tmp_addr; | |
31a60e22 | 124 | #ifdef DEBUG |
f0cbd3ec FB |
125 | else |
126 | lprint(", "); | |
31a60e22 | 127 | #endif |
f0cbd3ec | 128 | if (++found > 3) { |
31a60e22 | 129 | #ifdef DEBUG |
f0cbd3ec | 130 | lprint("(more)"); |
31a60e22 | 131 | #endif |
f0cbd3ec | 132 | break; |
31a60e22 BS |
133 | } |
134 | #ifdef DEBUG | |
135 | else | |
f0cbd3ec | 136 | lprint("%s", inet_ntoa(tmp_addr)); |
31a60e22 | 137 | #endif |
f0cbd3ec FB |
138 | } |
139 | } | |
1d43a717 | 140 | fclose(f); |
f0cbd3ec FB |
141 | if (!found) |
142 | return -1; | |
143 | return 0; | |
144 | } | |
145 | ||
146 | #endif | |
147 | ||
df461894 | 148 | static void slirp_init_once(void) |
379ff53d | 149 | { |
df461894 JK |
150 | static int initialized; |
151 | struct hostent *he; | |
152 | char our_name[256]; | |
153 | #ifdef _WIN32 | |
154 | WSADATA Data; | |
379ff53d FB |
155 | #endif |
156 | ||
df461894 JK |
157 | if (initialized) { |
158 | return; | |
159 | } | |
160 | initialized = 1; | |
161 | ||
162 | #ifdef _WIN32 | |
163 | WSAStartup(MAKEWORD(2,0), &Data); | |
164 | atexit(winsock_cleanup); | |
165 | #endif | |
166 | ||
167 | loopback_addr.s_addr = htonl(INADDR_LOOPBACK); | |
168 | ||
169 | /* FIXME: This address may change during runtime */ | |
170 | if (gethostname(our_name, sizeof(our_name)) == 0) { | |
171 | he = gethostbyname(our_name); | |
172 | if (he) { | |
173 | our_addr = *(struct in_addr *)he->h_addr; | |
174 | } | |
175 | } | |
176 | if (our_addr.s_addr == 0) { | |
177 | our_addr = loopback_addr; | |
178 | } | |
179 | ||
180 | /* FIXME: This address may change during runtime */ | |
181 | if (get_dns_addr(&dns_addr) < 0) { | |
182 | dns_addr = loopback_addr; | |
183 | } | |
184 | } | |
185 | ||
062e5527 AL |
186 | static void slirp_state_save(QEMUFile *f, void *opaque); |
187 | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id); | |
188 | ||
9f8bd042 JK |
189 | Slirp *slirp_init(int restricted, struct in_addr vnetwork, |
190 | struct in_addr vnetmask, struct in_addr vhost, | |
191 | const char *vhostname, const char *tftp_path, | |
192 | const char *bootfile, struct in_addr vdhcp_start, | |
193 | struct in_addr vnameserver, void *opaque) | |
f0cbd3ec | 194 | { |
ad0d8c4c | 195 | Slirp *slirp = qemu_mallocz(sizeof(Slirp)); |
460fec67 | 196 | |
df461894 | 197 | slirp_init_once(); |
379ff53d | 198 | |
460fec67 | 199 | slirp->restricted = restricted; |
f0cbd3ec | 200 | |
460fec67 JK |
201 | if_init(slirp); |
202 | ip_init(slirp); | |
f0cbd3ec FB |
203 | |
204 | /* Initialise mbufs *after* setting the MTU */ | |
460fec67 | 205 | m_init(slirp); |
f0cbd3ec | 206 | |
460fec67 JK |
207 | slirp->vnetwork_addr = vnetwork; |
208 | slirp->vnetwork_mask = vnetmask; | |
209 | slirp->vhost_addr = vhost; | |
c92ef6a2 | 210 | if (vhostname) { |
460fec67 JK |
211 | pstrcpy(slirp->client_hostname, sizeof(slirp->client_hostname), |
212 | vhostname); | |
a13a4126 | 213 | } |
ad196a9d | 214 | if (tftp_path) { |
460fec67 | 215 | slirp->tftp_prefix = qemu_strdup(tftp_path); |
ad196a9d | 216 | } |
ad196a9d | 217 | if (bootfile) { |
460fec67 | 218 | slirp->bootp_filename = qemu_strdup(bootfile); |
ad196a9d | 219 | } |
460fec67 JK |
220 | slirp->vdhcp_startaddr = vdhcp_start; |
221 | slirp->vnameserver_addr = vnameserver; | |
ad196a9d | 222 | |
9f8bd042 JK |
223 | slirp->opaque = opaque; |
224 | ||
460fec67 | 225 | register_savevm("slirp", 0, 2, slirp_state_save, slirp_state_load, slirp); |
9f8bd042 | 226 | |
b1c99fcd | 227 | TAILQ_INSERT_TAIL(&slirp_instances, slirp, entry); |
ad0d8c4c | 228 | |
9f8bd042 | 229 | return slirp; |
f0cbd3ec FB |
230 | } |
231 | ||
ad0d8c4c JK |
232 | void slirp_cleanup(Slirp *slirp) |
233 | { | |
b1c99fcd JK |
234 | TAILQ_REMOVE(&slirp_instances, slirp, entry); |
235 | ||
ad0d8c4c JK |
236 | unregister_savevm("slirp", slirp); |
237 | ||
238 | qemu_free(slirp->tftp_prefix); | |
239 | qemu_free(slirp->bootp_filename); | |
240 | qemu_free(slirp); | |
ad0d8c4c JK |
241 | } |
242 | ||
f0cbd3ec FB |
243 | #define CONN_CANFSEND(so) (((so)->so_state & (SS_FCANTSENDMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) |
244 | #define CONN_CANFRCV(so) (((so)->so_state & (SS_FCANTRCVMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) | |
245 | #define UPD_NFDS(x) if (nfds < (x)) nfds = (x) | |
246 | ||
247 | /* | |
248 | * curtime kept to an accuracy of 1ms | |
249 | */ | |
379ff53d FB |
250 | #ifdef _WIN32 |
251 | static void updtime(void) | |
252 | { | |
253 | struct _timeb tb; | |
254 | ||
255 | _ftime(&tb); | |
8ec7f4ed JK |
256 | |
257 | curtime = tb.time * 1000 + tb.millitm; | |
379ff53d FB |
258 | } |
259 | #else | |
f0cbd3ec FB |
260 | static void updtime(void) |
261 | { | |
8ec7f4ed | 262 | struct timeval tv; |
5fafdf24 | 263 | |
8ec7f4ed | 264 | gettimeofday(&tv, NULL); |
5fafdf24 | 265 | |
8ec7f4ed | 266 | curtime = tv.tv_sec * 1000 + tv.tv_usec / 1000; |
f0cbd3ec | 267 | } |
379ff53d | 268 | #endif |
f0cbd3ec | 269 | |
5fafdf24 | 270 | void slirp_select_fill(int *pnfds, |
f0cbd3ec FB |
271 | fd_set *readfds, fd_set *writefds, fd_set *xfds) |
272 | { | |
b1c99fcd | 273 | Slirp *slirp; |
f0cbd3ec | 274 | struct socket *so, *so_next; |
f0cbd3ec | 275 | int nfds; |
f0cbd3ec | 276 | |
b1c99fcd | 277 | if (TAILQ_EMPTY(&slirp_instances)) { |
d918f23e JK |
278 | return; |
279 | } | |
280 | ||
f0cbd3ec FB |
281 | /* fail safe */ |
282 | global_readfds = NULL; | |
283 | global_writefds = NULL; | |
284 | global_xfds = NULL; | |
3b46e624 | 285 | |
f0cbd3ec FB |
286 | nfds = *pnfds; |
287 | /* | |
288 | * First, TCP sockets | |
289 | */ | |
290 | do_slowtimo = 0; | |
d918f23e | 291 | |
b1c99fcd | 292 | TAILQ_FOREACH(slirp, &slirp_instances, entry) { |
5fafdf24 | 293 | /* |
f0cbd3ec FB |
294 | * *_slowtimo needs calling if there are IP fragments |
295 | * in the fragment queue, or there are TCP connections active | |
296 | */ | |
b1c99fcd | 297 | do_slowtimo |= ((slirp->tcb.so_next != &slirp->tcb) || |
460fec67 | 298 | (&slirp->ipq.ip_link != slirp->ipq.ip_link.next)); |
3b46e624 | 299 | |
460fec67 JK |
300 | for (so = slirp->tcb.so_next; so != &slirp->tcb; |
301 | so = so_next) { | |
f0cbd3ec | 302 | so_next = so->so_next; |
3b46e624 | 303 | |
f0cbd3ec FB |
304 | /* |
305 | * See if we need a tcp_fasttimo | |
306 | */ | |
307 | if (time_fasttimo == 0 && so->so_tcpcb->t_flags & TF_DELACK) | |
308 | time_fasttimo = curtime; /* Flag when we want a fasttimo */ | |
3b46e624 | 309 | |
f0cbd3ec FB |
310 | /* |
311 | * NOFDREF can include still connecting to local-host, | |
312 | * newly socreated() sockets etc. Don't want to select these. | |
313 | */ | |
314 | if (so->so_state & SS_NOFDREF || so->s == -1) | |
315 | continue; | |
3b46e624 | 316 | |
f0cbd3ec FB |
317 | /* |
318 | * Set for reading sockets which are accepting | |
319 | */ | |
320 | if (so->so_state & SS_FACCEPTCONN) { | |
321 | FD_SET(so->s, readfds); | |
322 | UPD_NFDS(so->s); | |
323 | continue; | |
324 | } | |
3b46e624 | 325 | |
f0cbd3ec FB |
326 | /* |
327 | * Set for writing sockets which are connecting | |
328 | */ | |
329 | if (so->so_state & SS_ISFCONNECTING) { | |
330 | FD_SET(so->s, writefds); | |
331 | UPD_NFDS(so->s); | |
332 | continue; | |
333 | } | |
3b46e624 | 334 | |
f0cbd3ec FB |
335 | /* |
336 | * Set for writing if we are connected, can send more, and | |
337 | * we have something to send | |
338 | */ | |
339 | if (CONN_CANFSEND(so) && so->so_rcv.sb_cc) { | |
340 | FD_SET(so->s, writefds); | |
341 | UPD_NFDS(so->s); | |
342 | } | |
3b46e624 | 343 | |
f0cbd3ec FB |
344 | /* |
345 | * Set for reading (and urgent data) if we are connected, can | |
346 | * receive more, and we have room for it XXX /2 ? | |
347 | */ | |
348 | if (CONN_CANFRCV(so) && (so->so_snd.sb_cc < (so->so_snd.sb_datalen/2))) { | |
349 | FD_SET(so->s, readfds); | |
350 | FD_SET(so->s, xfds); | |
351 | UPD_NFDS(so->s); | |
352 | } | |
353 | } | |
3b46e624 | 354 | |
f0cbd3ec FB |
355 | /* |
356 | * UDP sockets | |
357 | */ | |
460fec67 JK |
358 | for (so = slirp->udb.so_next; so != &slirp->udb; |
359 | so = so_next) { | |
f0cbd3ec | 360 | so_next = so->so_next; |
3b46e624 | 361 | |
f0cbd3ec FB |
362 | /* |
363 | * See if it's timed out | |
364 | */ | |
365 | if (so->so_expire) { | |
366 | if (so->so_expire <= curtime) { | |
367 | udp_detach(so); | |
368 | continue; | |
369 | } else | |
370 | do_slowtimo = 1; /* Let socket expire */ | |
371 | } | |
3b46e624 | 372 | |
f0cbd3ec FB |
373 | /* |
374 | * When UDP packets are received from over the | |
375 | * link, they're sendto()'d straight away, so | |
376 | * no need for setting for writing | |
377 | * Limit the number of packets queued by this session | |
378 | * to 4. Note that even though we try and limit this | |
379 | * to 4 packets, the session could have more queued | |
380 | * if the packets needed to be fragmented | |
381 | * (XXX <= 4 ?) | |
382 | */ | |
383 | if ((so->so_state & SS_ISFCONNECTED) && so->so_queued <= 4) { | |
384 | FD_SET(so->s, readfds); | |
385 | UPD_NFDS(so->s); | |
386 | } | |
387 | } | |
b1c99fcd | 388 | } |
5fafdf24 | 389 | |
f0cbd3ec | 390 | *pnfds = nfds; |
5fafdf24 | 391 | } |
f0cbd3ec | 392 | |
d918f23e JK |
393 | void slirp_select_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds, |
394 | int select_error) | |
f0cbd3ec | 395 | { |
b1c99fcd | 396 | Slirp *slirp; |
f0cbd3ec FB |
397 | struct socket *so, *so_next; |
398 | int ret; | |
399 | ||
b1c99fcd | 400 | if (TAILQ_EMPTY(&slirp_instances)) { |
d918f23e JK |
401 | return; |
402 | } | |
403 | ||
f0cbd3ec FB |
404 | global_readfds = readfds; |
405 | global_writefds = writefds; | |
406 | global_xfds = xfds; | |
407 | ||
408 | /* Update time */ | |
409 | updtime(); | |
5fafdf24 | 410 | |
b1c99fcd | 411 | TAILQ_FOREACH(slirp, &slirp_instances, entry) { |
f0cbd3ec | 412 | /* |
5fafdf24 | 413 | * See if anything has timed out |
f0cbd3ec | 414 | */ |
df5f8956 | 415 | if (time_fasttimo && ((curtime - time_fasttimo) >= 2)) { |
460fec67 | 416 | tcp_fasttimo(slirp); |
f0cbd3ec FB |
417 | time_fasttimo = 0; |
418 | } | |
419 | if (do_slowtimo && ((curtime - last_slowtimo) >= 499)) { | |
460fec67 JK |
420 | ip_slowtimo(slirp); |
421 | tcp_slowtimo(slirp); | |
f0cbd3ec FB |
422 | last_slowtimo = curtime; |
423 | } | |
5fafdf24 | 424 | |
f0cbd3ec FB |
425 | /* |
426 | * Check sockets | |
427 | */ | |
d918f23e | 428 | if (!select_error) { |
f0cbd3ec FB |
429 | /* |
430 | * Check TCP sockets | |
431 | */ | |
460fec67 JK |
432 | for (so = slirp->tcb.so_next; so != &slirp->tcb; |
433 | so = so_next) { | |
f0cbd3ec | 434 | so_next = so->so_next; |
3b46e624 | 435 | |
f0cbd3ec FB |
436 | /* |
437 | * FD_ISSET is meaningless on these sockets | |
438 | * (and they can crash the program) | |
439 | */ | |
440 | if (so->so_state & SS_NOFDREF || so->s == -1) | |
441 | continue; | |
3b46e624 | 442 | |
f0cbd3ec FB |
443 | /* |
444 | * Check for URG data | |
445 | * This will soread as well, so no need to | |
446 | * test for readfds below if this succeeds | |
447 | */ | |
448 | if (FD_ISSET(so->s, xfds)) | |
449 | sorecvoob(so); | |
450 | /* | |
451 | * Check sockets for reading | |
452 | */ | |
453 | else if (FD_ISSET(so->s, readfds)) { | |
454 | /* | |
455 | * Check for incoming connections | |
456 | */ | |
457 | if (so->so_state & SS_FACCEPTCONN) { | |
458 | tcp_connect(so); | |
459 | continue; | |
460 | } /* else */ | |
461 | ret = soread(so); | |
3b46e624 | 462 | |
f0cbd3ec FB |
463 | /* Output it if we read something */ |
464 | if (ret > 0) | |
465 | tcp_output(sototcpcb(so)); | |
466 | } | |
3b46e624 | 467 | |
f0cbd3ec FB |
468 | /* |
469 | * Check sockets for writing | |
470 | */ | |
471 | if (FD_ISSET(so->s, writefds)) { | |
472 | /* | |
473 | * Check for non-blocking, still-connecting sockets | |
474 | */ | |
475 | if (so->so_state & SS_ISFCONNECTING) { | |
476 | /* Connected */ | |
477 | so->so_state &= ~SS_ISFCONNECTING; | |
3b46e624 | 478 | |
0a656f5f | 479 | ret = send(so->s, (const void *) &ret, 0, 0); |
f0cbd3ec FB |
480 | if (ret < 0) { |
481 | /* XXXXX Must fix, zero bytes is a NOP */ | |
482 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
483 | errno == EINPROGRESS || errno == ENOTCONN) | |
484 | continue; | |
3b46e624 | 485 | |
f0cbd3ec | 486 | /* else failed */ |
f932b6ce JK |
487 | so->so_state &= SS_PERSISTENT_MASK; |
488 | so->so_state |= SS_NOFDREF; | |
f0cbd3ec FB |
489 | } |
490 | /* else so->so_state &= ~SS_ISFCONNECTING; */ | |
3b46e624 | 491 | |
f0cbd3ec FB |
492 | /* |
493 | * Continue tcp_input | |
494 | */ | |
495 | tcp_input((struct mbuf *)NULL, sizeof(struct ip), so); | |
496 | /* continue; */ | |
497 | } else | |
498 | ret = sowrite(so); | |
499 | /* | |
5fafdf24 | 500 | * XXXXX If we wrote something (a lot), there |
f0cbd3ec FB |
501 | * could be a need for a window update. |
502 | * In the worst case, the remote will send | |
503 | * a window probe to get things going again | |
504 | */ | |
505 | } | |
3b46e624 | 506 | |
f0cbd3ec FB |
507 | /* |
508 | * Probe a still-connecting, non-blocking socket | |
509 | * to check if it's still alive | |
510 | */ | |
511 | #ifdef PROBE_CONN | |
512 | if (so->so_state & SS_ISFCONNECTING) { | |
02d2c54c | 513 | ret = recv(so->s, (char *)&ret, 0,0); |
3b46e624 | 514 | |
f0cbd3ec FB |
515 | if (ret < 0) { |
516 | /* XXX */ | |
517 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
518 | errno == EINPROGRESS || errno == ENOTCONN) | |
519 | continue; /* Still connecting, continue */ | |
3b46e624 | 520 | |
f0cbd3ec | 521 | /* else failed */ |
f932b6ce JK |
522 | so->so_state &= SS_PERSISTENT_MASK; |
523 | so->so_state |= SS_NOFDREF; | |
3b46e624 | 524 | |
f0cbd3ec FB |
525 | /* tcp_input will take care of it */ |
526 | } else { | |
02d2c54c | 527 | ret = send(so->s, &ret, 0,0); |
f0cbd3ec FB |
528 | if (ret < 0) { |
529 | /* XXX */ | |
530 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
531 | errno == EINPROGRESS || errno == ENOTCONN) | |
532 | continue; | |
533 | /* else failed */ | |
f932b6ce JK |
534 | so->so_state &= SS_PERSISTENT_MASK; |
535 | so->so_state |= SS_NOFDREF; | |
f0cbd3ec FB |
536 | } else |
537 | so->so_state &= ~SS_ISFCONNECTING; | |
3b46e624 | 538 | |
f0cbd3ec FB |
539 | } |
540 | tcp_input((struct mbuf *)NULL, sizeof(struct ip),so); | |
541 | } /* SS_ISFCONNECTING */ | |
542 | #endif | |
543 | } | |
3b46e624 | 544 | |
f0cbd3ec FB |
545 | /* |
546 | * Now UDP sockets. | |
547 | * Incoming packets are sent straight away, they're not buffered. | |
548 | * Incoming UDP data isn't buffered either. | |
549 | */ | |
460fec67 JK |
550 | for (so = slirp->udb.so_next; so != &slirp->udb; |
551 | so = so_next) { | |
f0cbd3ec | 552 | so_next = so->so_next; |
3b46e624 | 553 | |
f0cbd3ec FB |
554 | if (so->s != -1 && FD_ISSET(so->s, readfds)) { |
555 | sorecvfrom(so); | |
556 | } | |
557 | } | |
558 | } | |
5fafdf24 | 559 | |
f0cbd3ec FB |
560 | /* |
561 | * See if we can start outputting | |
562 | */ | |
460fec67 JK |
563 | if (slirp->if_queued) { |
564 | if_start(slirp); | |
565 | } | |
b1c99fcd | 566 | } |
02d2c54c FB |
567 | |
568 | /* clear global file descriptor sets. | |
569 | * these reside on the stack in vl.c | |
570 | * so they're unusable if we're not in | |
571 | * slirp_select_fill or slirp_select_poll. | |
572 | */ | |
573 | global_readfds = NULL; | |
574 | global_writefds = NULL; | |
575 | global_xfds = NULL; | |
f0cbd3ec FB |
576 | } |
577 | ||
578 | #define ETH_ALEN 6 | |
579 | #define ETH_HLEN 14 | |
580 | ||
581 | #define ETH_P_IP 0x0800 /* Internet Protocol packet */ | |
582 | #define ETH_P_ARP 0x0806 /* Address Resolution packet */ | |
583 | ||
584 | #define ARPOP_REQUEST 1 /* ARP request */ | |
585 | #define ARPOP_REPLY 2 /* ARP reply */ | |
586 | ||
5fafdf24 | 587 | struct ethhdr |
f0cbd3ec FB |
588 | { |
589 | unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ | |
590 | unsigned char h_source[ETH_ALEN]; /* source ether addr */ | |
591 | unsigned short h_proto; /* packet type ID field */ | |
592 | }; | |
593 | ||
594 | struct arphdr | |
595 | { | |
596 | unsigned short ar_hrd; /* format of hardware address */ | |
597 | unsigned short ar_pro; /* format of protocol address */ | |
598 | unsigned char ar_hln; /* length of hardware address */ | |
599 | unsigned char ar_pln; /* length of protocol address */ | |
600 | unsigned short ar_op; /* ARP opcode (command) */ | |
601 | ||
602 | /* | |
603 | * Ethernet looks like this : This bit is variable sized however... | |
604 | */ | |
605 | unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */ | |
a13a4126 | 606 | uint32_t ar_sip; /* sender IP address */ |
f0cbd3ec | 607 | unsigned char ar_tha[ETH_ALEN]; /* target hardware address */ |
a13a4126 JK |
608 | uint32_t ar_tip ; /* target IP address */ |
609 | } __attribute__((packed)); | |
f0cbd3ec | 610 | |
460fec67 | 611 | static void arp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
f0cbd3ec FB |
612 | { |
613 | struct ethhdr *eh = (struct ethhdr *)pkt; | |
614 | struct arphdr *ah = (struct arphdr *)(pkt + ETH_HLEN); | |
615 | uint8_t arp_reply[ETH_HLEN + sizeof(struct arphdr)]; | |
616 | struct ethhdr *reh = (struct ethhdr *)arp_reply; | |
617 | struct arphdr *rah = (struct arphdr *)(arp_reply + ETH_HLEN); | |
618 | int ar_op; | |
a3d4af03 | 619 | struct ex_list *ex_ptr; |
f0cbd3ec FB |
620 | |
621 | ar_op = ntohs(ah->ar_op); | |
622 | switch(ar_op) { | |
623 | case ARPOP_REQUEST: | |
460fec67 JK |
624 | if ((ah->ar_tip & slirp->vnetwork_mask.s_addr) == |
625 | slirp->vnetwork_addr.s_addr) { | |
626 | if (ah->ar_tip == slirp->vnameserver_addr.s_addr || | |
627 | ah->ar_tip == slirp->vhost_addr.s_addr) | |
a3d4af03 | 628 | goto arp_ok; |
460fec67 | 629 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { |
a13a4126 | 630 | if (ex_ptr->ex_addr.s_addr == ah->ar_tip) |
a3d4af03 FB |
631 | goto arp_ok; |
632 | } | |
633 | return; | |
634 | arp_ok: | |
f0cbd3ec | 635 | /* XXX: make an ARP request to have the client address */ |
460fec67 | 636 | memcpy(slirp->client_ethaddr, eh->h_source, ETH_ALEN); |
f0cbd3ec FB |
637 | |
638 | /* ARP request for alias/dns mac address */ | |
639 | memcpy(reh->h_dest, pkt + ETH_ALEN, ETH_ALEN); | |
a13a4126 JK |
640 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); |
641 | memcpy(&reh->h_source[2], &ah->ar_tip, 4); | |
f0cbd3ec FB |
642 | reh->h_proto = htons(ETH_P_ARP); |
643 | ||
644 | rah->ar_hrd = htons(1); | |
645 | rah->ar_pro = htons(ETH_P_IP); | |
646 | rah->ar_hln = ETH_ALEN; | |
647 | rah->ar_pln = 4; | |
648 | rah->ar_op = htons(ARPOP_REPLY); | |
649 | memcpy(rah->ar_sha, reh->h_source, ETH_ALEN); | |
a13a4126 | 650 | rah->ar_sip = ah->ar_tip; |
f0cbd3ec | 651 | memcpy(rah->ar_tha, ah->ar_sha, ETH_ALEN); |
a13a4126 | 652 | rah->ar_tip = ah->ar_sip; |
9f8bd042 | 653 | slirp_output(slirp->opaque, arp_reply, sizeof(arp_reply)); |
f0cbd3ec FB |
654 | } |
655 | break; | |
de806f07 FB |
656 | case ARPOP_REPLY: |
657 | /* reply to request of client mac address ? */ | |
460fec67 JK |
658 | if (!memcmp(slirp->client_ethaddr, zero_ethaddr, ETH_ALEN) && |
659 | ah->ar_sip == slirp->client_ipaddr.s_addr) { | |
660 | memcpy(slirp->client_ethaddr, ah->ar_sha, ETH_ALEN); | |
de806f07 FB |
661 | } |
662 | break; | |
f0cbd3ec FB |
663 | default: |
664 | break; | |
665 | } | |
666 | } | |
667 | ||
9f8bd042 | 668 | void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
f0cbd3ec FB |
669 | { |
670 | struct mbuf *m; | |
671 | int proto; | |
672 | ||
673 | if (pkt_len < ETH_HLEN) | |
674 | return; | |
3b46e624 | 675 | |
f0cbd3ec FB |
676 | proto = ntohs(*(uint16_t *)(pkt + 12)); |
677 | switch(proto) { | |
678 | case ETH_P_ARP: | |
460fec67 | 679 | arp_input(slirp, pkt, pkt_len); |
f0cbd3ec FB |
680 | break; |
681 | case ETH_P_IP: | |
460fec67 | 682 | m = m_get(slirp); |
f0cbd3ec FB |
683 | if (!m) |
684 | return; | |
38f3e7c2 | 685 | /* Note: we add to align the IP header */ |
e8e880a7 AJ |
686 | if (M_FREEROOM(m) < pkt_len + 2) { |
687 | m_inc(m, pkt_len + 2); | |
688 | } | |
38f3e7c2 FB |
689 | m->m_len = pkt_len + 2; |
690 | memcpy(m->m_data + 2, pkt, pkt_len); | |
f0cbd3ec | 691 | |
38f3e7c2 FB |
692 | m->m_data += 2 + ETH_HLEN; |
693 | m->m_len -= 2 + ETH_HLEN; | |
f0cbd3ec FB |
694 | |
695 | ip_input(m); | |
696 | break; | |
697 | default: | |
698 | break; | |
699 | } | |
700 | } | |
701 | ||
702 | /* output the IP packet to the ethernet device */ | |
460fec67 | 703 | void if_encap(Slirp *slirp, const uint8_t *ip_data, int ip_data_len) |
f0cbd3ec FB |
704 | { |
705 | uint8_t buf[1600]; | |
706 | struct ethhdr *eh = (struct ethhdr *)buf; | |
707 | ||
708 | if (ip_data_len + ETH_HLEN > sizeof(buf)) | |
709 | return; | |
de806f07 | 710 | |
460fec67 | 711 | if (!memcmp(slirp->client_ethaddr, zero_ethaddr, ETH_ALEN)) { |
de806f07 FB |
712 | uint8_t arp_req[ETH_HLEN + sizeof(struct arphdr)]; |
713 | struct ethhdr *reh = (struct ethhdr *)arp_req; | |
714 | struct arphdr *rah = (struct arphdr *)(arp_req + ETH_HLEN); | |
715 | const struct ip *iph = (const struct ip *)ip_data; | |
716 | ||
717 | /* If the client addr is not known, there is no point in | |
718 | sending the packet to it. Normally the sender should have | |
719 | done an ARP request to get its MAC address. Here we do it | |
720 | in place of sending the packet and we hope that the sender | |
721 | will retry sending its packet. */ | |
722 | memset(reh->h_dest, 0xff, ETH_ALEN); | |
a13a4126 | 723 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); |
460fec67 | 724 | memcpy(&reh->h_source[2], &slirp->vhost_addr, 4); |
de806f07 FB |
725 | reh->h_proto = htons(ETH_P_ARP); |
726 | rah->ar_hrd = htons(1); | |
727 | rah->ar_pro = htons(ETH_P_IP); | |
728 | rah->ar_hln = ETH_ALEN; | |
729 | rah->ar_pln = 4; | |
730 | rah->ar_op = htons(ARPOP_REQUEST); | |
731 | /* source hw addr */ | |
a13a4126 | 732 | memcpy(rah->ar_sha, special_ethaddr, ETH_ALEN - 4); |
460fec67 | 733 | memcpy(&rah->ar_sha[2], &slirp->vhost_addr, 4); |
de806f07 | 734 | /* source IP */ |
460fec67 | 735 | rah->ar_sip = slirp->vhost_addr.s_addr; |
de806f07 FB |
736 | /* target hw addr (none) */ |
737 | memset(rah->ar_tha, 0, ETH_ALEN); | |
738 | /* target IP */ | |
a13a4126 | 739 | rah->ar_tip = iph->ip_dst.s_addr; |
460fec67 | 740 | slirp->client_ipaddr = iph->ip_dst; |
9f8bd042 | 741 | slirp_output(slirp->opaque, arp_req, sizeof(arp_req)); |
de806f07 | 742 | } else { |
460fec67 | 743 | memcpy(eh->h_dest, slirp->client_ethaddr, ETH_ALEN); |
a13a4126 | 744 | memcpy(eh->h_source, special_ethaddr, ETH_ALEN - 4); |
de806f07 | 745 | /* XXX: not correct */ |
460fec67 | 746 | memcpy(&eh->h_source[2], &slirp->vhost_addr, 4); |
de806f07 FB |
747 | eh->h_proto = htons(ETH_P_IP); |
748 | memcpy(buf + sizeof(struct ethhdr), ip_data, ip_data_len); | |
9f8bd042 | 749 | slirp_output(slirp->opaque, buf, ip_data_len + ETH_HLEN); |
de806f07 | 750 | } |
f0cbd3ec | 751 | } |
9bf05444 | 752 | |
9c12a6f2 | 753 | /* Drop host forwarding rule, return 0 if found. */ |
9f8bd042 JK |
754 | int slirp_remove_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
755 | int host_port) | |
c1261d8d AG |
756 | { |
757 | struct socket *so; | |
460fec67 | 758 | struct socket *head = (is_udp ? &slirp->udb : &slirp->tcb); |
2ad82cf9 JK |
759 | struct sockaddr_in addr; |
760 | int port = htons(host_port); | |
761 | socklen_t addr_len; | |
c1261d8d | 762 | |
c1261d8d | 763 | for (so = head->so_next; so != head; so = so->so_next) { |
2ad82cf9 | 764 | addr_len = sizeof(addr); |
9c12a6f2 JK |
765 | if ((so->so_state & SS_HOSTFWD) && |
766 | getsockname(so->s, (struct sockaddr *)&addr, &addr_len) == 0 && | |
3c6a0580 | 767 | addr.sin_addr.s_addr == host_addr.s_addr && |
2ad82cf9 | 768 | addr.sin_port == port) { |
c1261d8d AG |
769 | close(so->s); |
770 | sofree(so); | |
9c12a6f2 | 771 | return 0; |
c1261d8d AG |
772 | } |
773 | } | |
774 | ||
9c12a6f2 | 775 | return -1; |
c1261d8d AG |
776 | } |
777 | ||
9f8bd042 JK |
778 | int slirp_add_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
779 | int host_port, struct in_addr guest_addr, int guest_port) | |
9bf05444 | 780 | { |
a13a4126 | 781 | if (!guest_addr.s_addr) { |
460fec67 | 782 | guest_addr = slirp->vdhcp_startaddr; |
a13a4126 | 783 | } |
9bf05444 | 784 | if (is_udp) { |
460fec67 JK |
785 | if (!udp_listen(slirp, host_addr.s_addr, htons(host_port), |
786 | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) | |
9bf05444 FB |
787 | return -1; |
788 | } else { | |
460fec67 JK |
789 | if (!tcp_listen(slirp, host_addr.s_addr, htons(host_port), |
790 | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) | |
9bf05444 FB |
791 | return -1; |
792 | } | |
793 | return 0; | |
794 | } | |
a3d4af03 | 795 | |
9f8bd042 JK |
796 | int slirp_add_exec(Slirp *slirp, int do_pty, const void *args, |
797 | struct in_addr guest_addr, int guest_port) | |
a3d4af03 | 798 | { |
c92ef6a2 | 799 | if (!guest_addr.s_addr) { |
460fec67 JK |
800 | guest_addr.s_addr = slirp->vnetwork_addr.s_addr | |
801 | (htonl(0x0204) & ~slirp->vnetwork_mask.s_addr); | |
c92ef6a2 | 802 | } |
460fec67 JK |
803 | if ((guest_addr.s_addr & slirp->vnetwork_mask.s_addr) != |
804 | slirp->vnetwork_addr.s_addr || | |
805 | guest_addr.s_addr == slirp->vhost_addr.s_addr || | |
806 | guest_addr.s_addr == slirp->vnameserver_addr.s_addr) { | |
a13a4126 JK |
807 | return -1; |
808 | } | |
460fec67 | 809 | return add_exec(&slirp->exec_list, do_pty, (char *)args, guest_addr, |
a13a4126 | 810 | htons(guest_port)); |
a3d4af03 | 811 | } |
e1c5a2b3 AL |
812 | |
813 | ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags) | |
814 | { | |
815 | if (so->s == -1 && so->extra) { | |
816 | qemu_chr_write(so->extra, buf, len); | |
817 | return len; | |
818 | } | |
819 | ||
820 | return send(so->s, buf, len, flags); | |
821 | } | |
822 | ||
a13a4126 | 823 | static struct socket * |
460fec67 | 824 | slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port) |
e1c5a2b3 | 825 | { |
a13a4126 | 826 | struct socket *so; |
e1c5a2b3 | 827 | |
460fec67 | 828 | for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) { |
a13a4126 JK |
829 | if (so->so_faddr.s_addr == guest_addr.s_addr && |
830 | htons(so->so_fport) == guest_port) { | |
831 | return so; | |
832 | } | |
833 | } | |
834 | return NULL; | |
e1c5a2b3 AL |
835 | } |
836 | ||
9f8bd042 JK |
837 | size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr, |
838 | int guest_port) | |
e1c5a2b3 AL |
839 | { |
840 | struct iovec iov[2]; | |
841 | struct socket *so; | |
842 | ||
460fec67 | 843 | so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); |
e1c5a2b3 AL |
844 | |
845 | if (!so || so->so_state & SS_NOFDREF) | |
846 | return 0; | |
847 | ||
848 | if (!CONN_CANFRCV(so) || so->so_snd.sb_cc >= (so->so_snd.sb_datalen/2)) | |
849 | return 0; | |
850 | ||
851 | return sopreprbuf(so, iov, NULL); | |
852 | } | |
853 | ||
9f8bd042 | 854 | void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr, int guest_port, |
c92ef6a2 | 855 | const uint8_t *buf, int size) |
e1c5a2b3 AL |
856 | { |
857 | int ret; | |
460fec67 | 858 | struct socket *so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); |
a13a4126 | 859 | |
e1c5a2b3 AL |
860 | if (!so) |
861 | return; | |
862 | ||
0580ac91 | 863 | ret = soreadbuf(so, (const char *)buf, size); |
e1c5a2b3 AL |
864 | |
865 | if (ret > 0) | |
866 | tcp_output(sototcpcb(so)); | |
867 | } | |
062e5527 AL |
868 | |
869 | static void slirp_tcp_save(QEMUFile *f, struct tcpcb *tp) | |
870 | { | |
871 | int i; | |
872 | ||
873 | qemu_put_sbe16(f, tp->t_state); | |
874 | for (i = 0; i < TCPT_NTIMERS; i++) | |
875 | qemu_put_sbe16(f, tp->t_timer[i]); | |
876 | qemu_put_sbe16(f, tp->t_rxtshift); | |
877 | qemu_put_sbe16(f, tp->t_rxtcur); | |
878 | qemu_put_sbe16(f, tp->t_dupacks); | |
879 | qemu_put_be16(f, tp->t_maxseg); | |
880 | qemu_put_sbyte(f, tp->t_force); | |
881 | qemu_put_be16(f, tp->t_flags); | |
882 | qemu_put_be32(f, tp->snd_una); | |
883 | qemu_put_be32(f, tp->snd_nxt); | |
884 | qemu_put_be32(f, tp->snd_up); | |
885 | qemu_put_be32(f, tp->snd_wl1); | |
886 | qemu_put_be32(f, tp->snd_wl2); | |
887 | qemu_put_be32(f, tp->iss); | |
888 | qemu_put_be32(f, tp->snd_wnd); | |
889 | qemu_put_be32(f, tp->rcv_wnd); | |
890 | qemu_put_be32(f, tp->rcv_nxt); | |
891 | qemu_put_be32(f, tp->rcv_up); | |
892 | qemu_put_be32(f, tp->irs); | |
893 | qemu_put_be32(f, tp->rcv_adv); | |
894 | qemu_put_be32(f, tp->snd_max); | |
895 | qemu_put_be32(f, tp->snd_cwnd); | |
896 | qemu_put_be32(f, tp->snd_ssthresh); | |
897 | qemu_put_sbe16(f, tp->t_idle); | |
898 | qemu_put_sbe16(f, tp->t_rtt); | |
899 | qemu_put_be32(f, tp->t_rtseq); | |
900 | qemu_put_sbe16(f, tp->t_srtt); | |
901 | qemu_put_sbe16(f, tp->t_rttvar); | |
902 | qemu_put_be16(f, tp->t_rttmin); | |
903 | qemu_put_be32(f, tp->max_sndwnd); | |
904 | qemu_put_byte(f, tp->t_oobflags); | |
905 | qemu_put_byte(f, tp->t_iobc); | |
906 | qemu_put_sbe16(f, tp->t_softerror); | |
907 | qemu_put_byte(f, tp->snd_scale); | |
908 | qemu_put_byte(f, tp->rcv_scale); | |
909 | qemu_put_byte(f, tp->request_r_scale); | |
910 | qemu_put_byte(f, tp->requested_s_scale); | |
911 | qemu_put_be32(f, tp->ts_recent); | |
912 | qemu_put_be32(f, tp->ts_recent_age); | |
913 | qemu_put_be32(f, tp->last_ack_sent); | |
914 | } | |
915 | ||
916 | static void slirp_sbuf_save(QEMUFile *f, struct sbuf *sbuf) | |
917 | { | |
918 | uint32_t off; | |
919 | ||
920 | qemu_put_be32(f, sbuf->sb_cc); | |
921 | qemu_put_be32(f, sbuf->sb_datalen); | |
922 | off = (uint32_t)(sbuf->sb_wptr - sbuf->sb_data); | |
923 | qemu_put_sbe32(f, off); | |
924 | off = (uint32_t)(sbuf->sb_rptr - sbuf->sb_data); | |
925 | qemu_put_sbe32(f, off); | |
926 | qemu_put_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); | |
927 | } | |
928 | ||
929 | static void slirp_socket_save(QEMUFile *f, struct socket *so) | |
930 | { | |
931 | qemu_put_be32(f, so->so_urgc); | |
932 | qemu_put_be32(f, so->so_faddr.s_addr); | |
933 | qemu_put_be32(f, so->so_laddr.s_addr); | |
934 | qemu_put_be16(f, so->so_fport); | |
935 | qemu_put_be16(f, so->so_lport); | |
936 | qemu_put_byte(f, so->so_iptos); | |
937 | qemu_put_byte(f, so->so_emu); | |
938 | qemu_put_byte(f, so->so_type); | |
939 | qemu_put_be32(f, so->so_state); | |
940 | slirp_sbuf_save(f, &so->so_rcv); | |
941 | slirp_sbuf_save(f, &so->so_snd); | |
942 | slirp_tcp_save(f, so->so_tcpcb); | |
943 | } | |
944 | ||
945 | static void slirp_state_save(QEMUFile *f, void *opaque) | |
946 | { | |
460fec67 | 947 | Slirp *slirp = opaque; |
062e5527 AL |
948 | struct ex_list *ex_ptr; |
949 | ||
460fec67 | 950 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) |
062e5527 AL |
951 | if (ex_ptr->ex_pty == 3) { |
952 | struct socket *so; | |
460fec67 JK |
953 | so = slirp_find_ctl_socket(slirp, ex_ptr->ex_addr, |
954 | ntohs(ex_ptr->ex_fport)); | |
062e5527 AL |
955 | if (!so) |
956 | continue; | |
957 | ||
958 | qemu_put_byte(f, 42); | |
959 | slirp_socket_save(f, so); | |
960 | } | |
961 | qemu_put_byte(f, 0); | |
285f7a62 | 962 | |
460fec67 | 963 | qemu_put_be16(f, slirp->ip_id); |
062e5527 AL |
964 | } |
965 | ||
966 | static void slirp_tcp_load(QEMUFile *f, struct tcpcb *tp) | |
967 | { | |
968 | int i; | |
969 | ||
970 | tp->t_state = qemu_get_sbe16(f); | |
971 | for (i = 0; i < TCPT_NTIMERS; i++) | |
972 | tp->t_timer[i] = qemu_get_sbe16(f); | |
973 | tp->t_rxtshift = qemu_get_sbe16(f); | |
974 | tp->t_rxtcur = qemu_get_sbe16(f); | |
975 | tp->t_dupacks = qemu_get_sbe16(f); | |
976 | tp->t_maxseg = qemu_get_be16(f); | |
977 | tp->t_force = qemu_get_sbyte(f); | |
978 | tp->t_flags = qemu_get_be16(f); | |
979 | tp->snd_una = qemu_get_be32(f); | |
980 | tp->snd_nxt = qemu_get_be32(f); | |
981 | tp->snd_up = qemu_get_be32(f); | |
982 | tp->snd_wl1 = qemu_get_be32(f); | |
983 | tp->snd_wl2 = qemu_get_be32(f); | |
984 | tp->iss = qemu_get_be32(f); | |
985 | tp->snd_wnd = qemu_get_be32(f); | |
986 | tp->rcv_wnd = qemu_get_be32(f); | |
987 | tp->rcv_nxt = qemu_get_be32(f); | |
988 | tp->rcv_up = qemu_get_be32(f); | |
989 | tp->irs = qemu_get_be32(f); | |
990 | tp->rcv_adv = qemu_get_be32(f); | |
991 | tp->snd_max = qemu_get_be32(f); | |
992 | tp->snd_cwnd = qemu_get_be32(f); | |
993 | tp->snd_ssthresh = qemu_get_be32(f); | |
994 | tp->t_idle = qemu_get_sbe16(f); | |
995 | tp->t_rtt = qemu_get_sbe16(f); | |
996 | tp->t_rtseq = qemu_get_be32(f); | |
997 | tp->t_srtt = qemu_get_sbe16(f); | |
998 | tp->t_rttvar = qemu_get_sbe16(f); | |
999 | tp->t_rttmin = qemu_get_be16(f); | |
1000 | tp->max_sndwnd = qemu_get_be32(f); | |
1001 | tp->t_oobflags = qemu_get_byte(f); | |
1002 | tp->t_iobc = qemu_get_byte(f); | |
1003 | tp->t_softerror = qemu_get_sbe16(f); | |
1004 | tp->snd_scale = qemu_get_byte(f); | |
1005 | tp->rcv_scale = qemu_get_byte(f); | |
1006 | tp->request_r_scale = qemu_get_byte(f); | |
1007 | tp->requested_s_scale = qemu_get_byte(f); | |
1008 | tp->ts_recent = qemu_get_be32(f); | |
1009 | tp->ts_recent_age = qemu_get_be32(f); | |
1010 | tp->last_ack_sent = qemu_get_be32(f); | |
1011 | tcp_template(tp); | |
1012 | } | |
1013 | ||
1014 | static int slirp_sbuf_load(QEMUFile *f, struct sbuf *sbuf) | |
1015 | { | |
1016 | uint32_t off, sb_cc, sb_datalen; | |
1017 | ||
1018 | sb_cc = qemu_get_be32(f); | |
1019 | sb_datalen = qemu_get_be32(f); | |
1020 | ||
1021 | sbreserve(sbuf, sb_datalen); | |
1022 | ||
1023 | if (sbuf->sb_datalen != sb_datalen) | |
1024 | return -ENOMEM; | |
1025 | ||
1026 | sbuf->sb_cc = sb_cc; | |
1027 | ||
1028 | off = qemu_get_sbe32(f); | |
1029 | sbuf->sb_wptr = sbuf->sb_data + off; | |
1030 | off = qemu_get_sbe32(f); | |
1031 | sbuf->sb_rptr = sbuf->sb_data + off; | |
1032 | qemu_get_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); | |
1033 | ||
1034 | return 0; | |
1035 | } | |
1036 | ||
1037 | static int slirp_socket_load(QEMUFile *f, struct socket *so) | |
1038 | { | |
1039 | if (tcp_attach(so) < 0) | |
1040 | return -ENOMEM; | |
1041 | ||
1042 | so->so_urgc = qemu_get_be32(f); | |
1043 | so->so_faddr.s_addr = qemu_get_be32(f); | |
1044 | so->so_laddr.s_addr = qemu_get_be32(f); | |
1045 | so->so_fport = qemu_get_be16(f); | |
1046 | so->so_lport = qemu_get_be16(f); | |
1047 | so->so_iptos = qemu_get_byte(f); | |
1048 | so->so_emu = qemu_get_byte(f); | |
1049 | so->so_type = qemu_get_byte(f); | |
1050 | so->so_state = qemu_get_be32(f); | |
1051 | if (slirp_sbuf_load(f, &so->so_rcv) < 0) | |
1052 | return -ENOMEM; | |
1053 | if (slirp_sbuf_load(f, &so->so_snd) < 0) | |
1054 | return -ENOMEM; | |
1055 | slirp_tcp_load(f, so->so_tcpcb); | |
1056 | ||
1057 | return 0; | |
1058 | } | |
1059 | ||
1060 | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id) | |
1061 | { | |
460fec67 | 1062 | Slirp *slirp = opaque; |
062e5527 AL |
1063 | struct ex_list *ex_ptr; |
1064 | int r; | |
1065 | ||
1066 | while ((r = qemu_get_byte(f))) { | |
1067 | int ret; | |
460fec67 | 1068 | struct socket *so = socreate(slirp); |
062e5527 AL |
1069 | |
1070 | if (!so) | |
1071 | return -ENOMEM; | |
1072 | ||
1073 | ret = slirp_socket_load(f, so); | |
1074 | ||
1075 | if (ret < 0) | |
1076 | return ret; | |
1077 | ||
460fec67 JK |
1078 | if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) != |
1079 | slirp->vnetwork_addr.s_addr) { | |
062e5527 | 1080 | return -EINVAL; |
a13a4126 | 1081 | } |
460fec67 | 1082 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { |
062e5527 | 1083 | if (ex_ptr->ex_pty == 3 && |
a13a4126 JK |
1084 | so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr && |
1085 | so->so_fport == ex_ptr->ex_fport) { | |
062e5527 | 1086 | break; |
a13a4126 JK |
1087 | } |
1088 | } | |
062e5527 AL |
1089 | if (!ex_ptr) |
1090 | return -EINVAL; | |
1091 | ||
0580ac91 | 1092 | so->extra = (void *)ex_ptr->ex_exec; |
062e5527 AL |
1093 | } |
1094 | ||
285f7a62 | 1095 | if (version_id >= 2) { |
460fec67 | 1096 | slirp->ip_id = qemu_get_be16(f); |
285f7a62 JK |
1097 | } |
1098 | ||
062e5527 AL |
1099 | return 0; |
1100 | } |