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Commit | Line | Data |
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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" |
aaf10d9d | 25 | #include "qemu-timer.h" |
0580ac91 | 26 | #include "qemu-char.h" |
f0cbd3ec | 27 | #include "slirp.h" |
062e5527 | 28 | #include "hw/hw.h" |
f0cbd3ec | 29 | |
f0cbd3ec FB |
30 | /* host loopback address */ |
31 | struct in_addr loopback_addr; | |
32 | ||
a13a4126 | 33 | /* emulated hosts use the MAC addr 52:55:IP:IP:IP:IP */ |
9634d903 | 34 | static const uint8_t special_ethaddr[6] = { |
a13a4126 | 35 | 0x52, 0x55, 0x00, 0x00, 0x00, 0x00 |
f0cbd3ec FB |
36 | }; |
37 | ||
de806f07 | 38 | static const uint8_t zero_ethaddr[6] = { 0, 0, 0, 0, 0, 0 }; |
f0cbd3ec | 39 | |
f0cbd3ec FB |
40 | /* XXX: suppress those select globals */ |
41 | fd_set *global_readfds, *global_writefds, *global_xfds; | |
42 | ||
f1d99bbd JK |
43 | u_int curtime; |
44 | static u_int time_fasttimo, last_slowtimo; | |
45 | static int do_slowtimo; | |
46 | ||
23534222 | 47 | static TAILQ_HEAD(slirp_instances, Slirp) slirp_instances = |
b1c99fcd | 48 | TAILQ_HEAD_INITIALIZER(slirp_instances); |
115defd1 | 49 | |
9e3a95ef SW |
50 | static struct in_addr dns_addr; |
51 | static u_int dns_addr_time; | |
df7a86ed | 52 | |
f0cbd3ec FB |
53 | #ifdef _WIN32 |
54 | ||
df7a86ed | 55 | int get_dns_addr(struct in_addr *pdns_addr) |
f0cbd3ec | 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 | |
df7a86ed ES |
63 | if (dns_addr.s_addr != 0 && (curtime - dns_addr_time) < 1000) { |
64 | *pdns_addr = dns_addr; | |
65 | return 0; | |
66 | } | |
67 | ||
379ff53d FB |
68 | FixedInfo = (FIXED_INFO *)GlobalAlloc(GPTR, sizeof(FIXED_INFO)); |
69 | BufLen = sizeof(FIXED_INFO); | |
3b46e624 | 70 | |
379ff53d FB |
71 | if (ERROR_BUFFER_OVERFLOW == GetNetworkParams(FixedInfo, &BufLen)) { |
72 | if (FixedInfo) { | |
73 | GlobalFree(FixedInfo); | |
74 | FixedInfo = NULL; | |
75 | } | |
76 | FixedInfo = GlobalAlloc(GPTR, BufLen); | |
77 | } | |
5fafdf24 | 78 | |
379ff53d FB |
79 | if ((ret = GetNetworkParams(FixedInfo, &BufLen)) != ERROR_SUCCESS) { |
80 | printf("GetNetworkParams failed. ret = %08x\n", (u_int)ret ); | |
81 | if (FixedInfo) { | |
82 | GlobalFree(FixedInfo); | |
83 | FixedInfo = NULL; | |
84 | } | |
85 | return -1; | |
86 | } | |
3b46e624 | 87 | |
379ff53d FB |
88 | pIPAddr = &(FixedInfo->DnsServerList); |
89 | inet_aton(pIPAddr->IpAddress.String, &tmp_addr); | |
90 | *pdns_addr = tmp_addr; | |
df7a86ed ES |
91 | dns_addr = tmp_addr; |
92 | dns_addr_time = curtime; | |
379ff53d FB |
93 | if (FixedInfo) { |
94 | GlobalFree(FixedInfo); | |
95 | FixedInfo = NULL; | |
96 | } | |
97 | return 0; | |
f0cbd3ec FB |
98 | } |
99 | ||
df461894 JK |
100 | static void winsock_cleanup(void) |
101 | { | |
102 | WSACleanup(); | |
103 | } | |
104 | ||
f0cbd3ec FB |
105 | #else |
106 | ||
df7a86ed ES |
107 | struct stat dns_addr_stat; |
108 | ||
109 | int get_dns_addr(struct in_addr *pdns_addr) | |
f0cbd3ec FB |
110 | { |
111 | char buff[512]; | |
363a37d5 | 112 | char buff2[257]; |
f0cbd3ec FB |
113 | FILE *f; |
114 | int found = 0; | |
115 | struct in_addr tmp_addr; | |
3b46e624 | 116 | |
df7a86ed ES |
117 | if (dns_addr.s_addr != 0) { |
118 | struct stat old_stat; | |
119 | if ((curtime - dns_addr_time) < 1000) { | |
120 | *pdns_addr = dns_addr; | |
121 | return 0; | |
122 | } | |
123 | old_stat = dns_addr_stat; | |
124 | if (stat("/etc/resolv.conf", &dns_addr_stat) != 0) | |
125 | return -1; | |
126 | if ((dns_addr_stat.st_dev == old_stat.st_dev) | |
127 | && (dns_addr_stat.st_ino == old_stat.st_ino) | |
128 | && (dns_addr_stat.st_size == old_stat.st_size) | |
129 | && (dns_addr_stat.st_mtime == old_stat.st_mtime)) { | |
130 | *pdns_addr = dns_addr; | |
131 | return 0; | |
132 | } | |
133 | } | |
134 | ||
f0cbd3ec FB |
135 | f = fopen("/etc/resolv.conf", "r"); |
136 | if (!f) | |
137 | return -1; | |
138 | ||
31a60e22 | 139 | #ifdef DEBUG |
f0cbd3ec | 140 | lprint("IP address of your DNS(s): "); |
31a60e22 | 141 | #endif |
f0cbd3ec FB |
142 | while (fgets(buff, 512, f) != NULL) { |
143 | if (sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1) { | |
144 | if (!inet_aton(buff2, &tmp_addr)) | |
145 | continue; | |
f0cbd3ec | 146 | /* If it's the first one, set it to dns_addr */ |
df7a86ed | 147 | if (!found) { |
f0cbd3ec | 148 | *pdns_addr = tmp_addr; |
df7a86ed ES |
149 | dns_addr = tmp_addr; |
150 | dns_addr_time = curtime; | |
151 | } | |
31a60e22 | 152 | #ifdef DEBUG |
f0cbd3ec FB |
153 | else |
154 | lprint(", "); | |
31a60e22 | 155 | #endif |
f0cbd3ec | 156 | if (++found > 3) { |
31a60e22 | 157 | #ifdef DEBUG |
f0cbd3ec | 158 | lprint("(more)"); |
31a60e22 | 159 | #endif |
f0cbd3ec | 160 | break; |
31a60e22 BS |
161 | } |
162 | #ifdef DEBUG | |
163 | else | |
f0cbd3ec | 164 | lprint("%s", inet_ntoa(tmp_addr)); |
31a60e22 | 165 | #endif |
f0cbd3ec FB |
166 | } |
167 | } | |
1d43a717 | 168 | fclose(f); |
f0cbd3ec FB |
169 | if (!found) |
170 | return -1; | |
171 | return 0; | |
172 | } | |
173 | ||
174 | #endif | |
175 | ||
df461894 | 176 | static void slirp_init_once(void) |
379ff53d | 177 | { |
df461894 | 178 | static int initialized; |
df461894 JK |
179 | #ifdef _WIN32 |
180 | WSADATA Data; | |
379ff53d FB |
181 | #endif |
182 | ||
df461894 JK |
183 | if (initialized) { |
184 | return; | |
185 | } | |
186 | initialized = 1; | |
187 | ||
188 | #ifdef _WIN32 | |
189 | WSAStartup(MAKEWORD(2,0), &Data); | |
190 | atexit(winsock_cleanup); | |
191 | #endif | |
192 | ||
193 | loopback_addr.s_addr = htonl(INADDR_LOOPBACK); | |
df461894 JK |
194 | } |
195 | ||
062e5527 AL |
196 | static void slirp_state_save(QEMUFile *f, void *opaque); |
197 | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id); | |
198 | ||
9f8bd042 JK |
199 | Slirp *slirp_init(int restricted, struct in_addr vnetwork, |
200 | struct in_addr vnetmask, struct in_addr vhost, | |
201 | const char *vhostname, const char *tftp_path, | |
202 | const char *bootfile, struct in_addr vdhcp_start, | |
203 | struct in_addr vnameserver, void *opaque) | |
f0cbd3ec | 204 | { |
ad0d8c4c | 205 | Slirp *slirp = qemu_mallocz(sizeof(Slirp)); |
460fec67 | 206 | |
df461894 | 207 | slirp_init_once(); |
379ff53d | 208 | |
460fec67 | 209 | slirp->restricted = restricted; |
f0cbd3ec | 210 | |
460fec67 JK |
211 | if_init(slirp); |
212 | ip_init(slirp); | |
f0cbd3ec FB |
213 | |
214 | /* Initialise mbufs *after* setting the MTU */ | |
460fec67 | 215 | m_init(slirp); |
f0cbd3ec | 216 | |
460fec67 JK |
217 | slirp->vnetwork_addr = vnetwork; |
218 | slirp->vnetwork_mask = vnetmask; | |
219 | slirp->vhost_addr = vhost; | |
c92ef6a2 | 220 | if (vhostname) { |
460fec67 JK |
221 | pstrcpy(slirp->client_hostname, sizeof(slirp->client_hostname), |
222 | vhostname); | |
a13a4126 | 223 | } |
ad196a9d | 224 | if (tftp_path) { |
460fec67 | 225 | slirp->tftp_prefix = qemu_strdup(tftp_path); |
ad196a9d | 226 | } |
ad196a9d | 227 | if (bootfile) { |
460fec67 | 228 | slirp->bootp_filename = qemu_strdup(bootfile); |
ad196a9d | 229 | } |
460fec67 JK |
230 | slirp->vdhcp_startaddr = vdhcp_start; |
231 | slirp->vnameserver_addr = vnameserver; | |
ad196a9d | 232 | |
9f8bd042 JK |
233 | slirp->opaque = opaque; |
234 | ||
0a1f851e | 235 | register_savevm("slirp", 0, 3, slirp_state_save, slirp_state_load, slirp); |
9f8bd042 | 236 | |
b1c99fcd | 237 | TAILQ_INSERT_TAIL(&slirp_instances, slirp, entry); |
ad0d8c4c | 238 | |
9f8bd042 | 239 | return slirp; |
f0cbd3ec FB |
240 | } |
241 | ||
ad0d8c4c JK |
242 | void slirp_cleanup(Slirp *slirp) |
243 | { | |
b1c99fcd JK |
244 | TAILQ_REMOVE(&slirp_instances, slirp, entry); |
245 | ||
ad0d8c4c JK |
246 | unregister_savevm("slirp", slirp); |
247 | ||
248 | qemu_free(slirp->tftp_prefix); | |
249 | qemu_free(slirp->bootp_filename); | |
250 | qemu_free(slirp); | |
ad0d8c4c JK |
251 | } |
252 | ||
f0cbd3ec FB |
253 | #define CONN_CANFSEND(so) (((so)->so_state & (SS_FCANTSENDMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) |
254 | #define CONN_CANFRCV(so) (((so)->so_state & (SS_FCANTRCVMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) | |
255 | #define UPD_NFDS(x) if (nfds < (x)) nfds = (x) | |
256 | ||
5fafdf24 | 257 | void slirp_select_fill(int *pnfds, |
f0cbd3ec FB |
258 | fd_set *readfds, fd_set *writefds, fd_set *xfds) |
259 | { | |
b1c99fcd | 260 | Slirp *slirp; |
f0cbd3ec | 261 | struct socket *so, *so_next; |
f0cbd3ec | 262 | int nfds; |
f0cbd3ec | 263 | |
b1c99fcd | 264 | if (TAILQ_EMPTY(&slirp_instances)) { |
d918f23e JK |
265 | return; |
266 | } | |
267 | ||
f0cbd3ec FB |
268 | /* fail safe */ |
269 | global_readfds = NULL; | |
270 | global_writefds = NULL; | |
271 | global_xfds = NULL; | |
3b46e624 | 272 | |
f0cbd3ec FB |
273 | nfds = *pnfds; |
274 | /* | |
275 | * First, TCP sockets | |
276 | */ | |
277 | do_slowtimo = 0; | |
d918f23e | 278 | |
b1c99fcd | 279 | TAILQ_FOREACH(slirp, &slirp_instances, entry) { |
5fafdf24 | 280 | /* |
f0cbd3ec FB |
281 | * *_slowtimo needs calling if there are IP fragments |
282 | * in the fragment queue, or there are TCP connections active | |
283 | */ | |
b1c99fcd | 284 | do_slowtimo |= ((slirp->tcb.so_next != &slirp->tcb) || |
460fec67 | 285 | (&slirp->ipq.ip_link != slirp->ipq.ip_link.next)); |
3b46e624 | 286 | |
460fec67 JK |
287 | for (so = slirp->tcb.so_next; so != &slirp->tcb; |
288 | so = so_next) { | |
f0cbd3ec | 289 | so_next = so->so_next; |
3b46e624 | 290 | |
f0cbd3ec FB |
291 | /* |
292 | * See if we need a tcp_fasttimo | |
293 | */ | |
294 | if (time_fasttimo == 0 && so->so_tcpcb->t_flags & TF_DELACK) | |
295 | time_fasttimo = curtime; /* Flag when we want a fasttimo */ | |
3b46e624 | 296 | |
f0cbd3ec FB |
297 | /* |
298 | * NOFDREF can include still connecting to local-host, | |
299 | * newly socreated() sockets etc. Don't want to select these. | |
300 | */ | |
301 | if (so->so_state & SS_NOFDREF || so->s == -1) | |
302 | continue; | |
3b46e624 | 303 | |
f0cbd3ec FB |
304 | /* |
305 | * Set for reading sockets which are accepting | |
306 | */ | |
307 | if (so->so_state & SS_FACCEPTCONN) { | |
308 | FD_SET(so->s, readfds); | |
309 | UPD_NFDS(so->s); | |
310 | continue; | |
311 | } | |
3b46e624 | 312 | |
f0cbd3ec FB |
313 | /* |
314 | * Set for writing sockets which are connecting | |
315 | */ | |
316 | if (so->so_state & SS_ISFCONNECTING) { | |
317 | FD_SET(so->s, writefds); | |
318 | UPD_NFDS(so->s); | |
319 | continue; | |
320 | } | |
3b46e624 | 321 | |
f0cbd3ec FB |
322 | /* |
323 | * Set for writing if we are connected, can send more, and | |
324 | * we have something to send | |
325 | */ | |
326 | if (CONN_CANFSEND(so) && so->so_rcv.sb_cc) { | |
327 | FD_SET(so->s, writefds); | |
328 | UPD_NFDS(so->s); | |
329 | } | |
3b46e624 | 330 | |
f0cbd3ec FB |
331 | /* |
332 | * Set for reading (and urgent data) if we are connected, can | |
333 | * receive more, and we have room for it XXX /2 ? | |
334 | */ | |
335 | if (CONN_CANFRCV(so) && (so->so_snd.sb_cc < (so->so_snd.sb_datalen/2))) { | |
336 | FD_SET(so->s, readfds); | |
337 | FD_SET(so->s, xfds); | |
338 | UPD_NFDS(so->s); | |
339 | } | |
340 | } | |
3b46e624 | 341 | |
f0cbd3ec FB |
342 | /* |
343 | * UDP sockets | |
344 | */ | |
460fec67 JK |
345 | for (so = slirp->udb.so_next; so != &slirp->udb; |
346 | so = so_next) { | |
f0cbd3ec | 347 | so_next = so->so_next; |
3b46e624 | 348 | |
f0cbd3ec FB |
349 | /* |
350 | * See if it's timed out | |
351 | */ | |
352 | if (so->so_expire) { | |
353 | if (so->so_expire <= curtime) { | |
354 | udp_detach(so); | |
355 | continue; | |
356 | } else | |
357 | do_slowtimo = 1; /* Let socket expire */ | |
358 | } | |
3b46e624 | 359 | |
f0cbd3ec FB |
360 | /* |
361 | * When UDP packets are received from over the | |
362 | * link, they're sendto()'d straight away, so | |
363 | * no need for setting for writing | |
364 | * Limit the number of packets queued by this session | |
365 | * to 4. Note that even though we try and limit this | |
366 | * to 4 packets, the session could have more queued | |
367 | * if the packets needed to be fragmented | |
368 | * (XXX <= 4 ?) | |
369 | */ | |
370 | if ((so->so_state & SS_ISFCONNECTED) && so->so_queued <= 4) { | |
371 | FD_SET(so->s, readfds); | |
372 | UPD_NFDS(so->s); | |
373 | } | |
374 | } | |
b1c99fcd | 375 | } |
5fafdf24 | 376 | |
f0cbd3ec | 377 | *pnfds = nfds; |
5fafdf24 | 378 | } |
f0cbd3ec | 379 | |
d918f23e JK |
380 | void slirp_select_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds, |
381 | int select_error) | |
f0cbd3ec | 382 | { |
b1c99fcd | 383 | Slirp *slirp; |
f0cbd3ec FB |
384 | struct socket *so, *so_next; |
385 | int ret; | |
386 | ||
b1c99fcd | 387 | if (TAILQ_EMPTY(&slirp_instances)) { |
d918f23e JK |
388 | return; |
389 | } | |
390 | ||
f0cbd3ec FB |
391 | global_readfds = readfds; |
392 | global_writefds = writefds; | |
393 | global_xfds = xfds; | |
394 | ||
aaf10d9d | 395 | curtime = qemu_get_clock(rt_clock); |
5fafdf24 | 396 | |
b1c99fcd | 397 | TAILQ_FOREACH(slirp, &slirp_instances, entry) { |
f0cbd3ec | 398 | /* |
5fafdf24 | 399 | * See if anything has timed out |
f0cbd3ec | 400 | */ |
df5f8956 | 401 | if (time_fasttimo && ((curtime - time_fasttimo) >= 2)) { |
460fec67 | 402 | tcp_fasttimo(slirp); |
f0cbd3ec FB |
403 | time_fasttimo = 0; |
404 | } | |
405 | if (do_slowtimo && ((curtime - last_slowtimo) >= 499)) { | |
460fec67 JK |
406 | ip_slowtimo(slirp); |
407 | tcp_slowtimo(slirp); | |
f0cbd3ec FB |
408 | last_slowtimo = curtime; |
409 | } | |
5fafdf24 | 410 | |
f0cbd3ec FB |
411 | /* |
412 | * Check sockets | |
413 | */ | |
d918f23e | 414 | if (!select_error) { |
f0cbd3ec FB |
415 | /* |
416 | * Check TCP sockets | |
417 | */ | |
460fec67 JK |
418 | for (so = slirp->tcb.so_next; so != &slirp->tcb; |
419 | so = so_next) { | |
f0cbd3ec | 420 | so_next = so->so_next; |
3b46e624 | 421 | |
f0cbd3ec FB |
422 | /* |
423 | * FD_ISSET is meaningless on these sockets | |
424 | * (and they can crash the program) | |
425 | */ | |
426 | if (so->so_state & SS_NOFDREF || so->s == -1) | |
427 | continue; | |
3b46e624 | 428 | |
f0cbd3ec FB |
429 | /* |
430 | * Check for URG data | |
431 | * This will soread as well, so no need to | |
432 | * test for readfds below if this succeeds | |
433 | */ | |
434 | if (FD_ISSET(so->s, xfds)) | |
435 | sorecvoob(so); | |
436 | /* | |
437 | * Check sockets for reading | |
438 | */ | |
439 | else if (FD_ISSET(so->s, readfds)) { | |
440 | /* | |
441 | * Check for incoming connections | |
442 | */ | |
443 | if (so->so_state & SS_FACCEPTCONN) { | |
444 | tcp_connect(so); | |
445 | continue; | |
446 | } /* else */ | |
447 | ret = soread(so); | |
3b46e624 | 448 | |
f0cbd3ec FB |
449 | /* Output it if we read something */ |
450 | if (ret > 0) | |
451 | tcp_output(sototcpcb(so)); | |
452 | } | |
3b46e624 | 453 | |
f0cbd3ec FB |
454 | /* |
455 | * Check sockets for writing | |
456 | */ | |
457 | if (FD_ISSET(so->s, writefds)) { | |
458 | /* | |
459 | * Check for non-blocking, still-connecting sockets | |
460 | */ | |
461 | if (so->so_state & SS_ISFCONNECTING) { | |
462 | /* Connected */ | |
463 | so->so_state &= ~SS_ISFCONNECTING; | |
3b46e624 | 464 | |
0a656f5f | 465 | ret = send(so->s, (const void *) &ret, 0, 0); |
f0cbd3ec FB |
466 | if (ret < 0) { |
467 | /* XXXXX Must fix, zero bytes is a NOP */ | |
468 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
469 | errno == EINPROGRESS || errno == ENOTCONN) | |
470 | continue; | |
3b46e624 | 471 | |
f0cbd3ec | 472 | /* else failed */ |
f932b6ce JK |
473 | so->so_state &= SS_PERSISTENT_MASK; |
474 | so->so_state |= SS_NOFDREF; | |
f0cbd3ec FB |
475 | } |
476 | /* else so->so_state &= ~SS_ISFCONNECTING; */ | |
3b46e624 | 477 | |
f0cbd3ec FB |
478 | /* |
479 | * Continue tcp_input | |
480 | */ | |
481 | tcp_input((struct mbuf *)NULL, sizeof(struct ip), so); | |
482 | /* continue; */ | |
483 | } else | |
484 | ret = sowrite(so); | |
485 | /* | |
5fafdf24 | 486 | * XXXXX If we wrote something (a lot), there |
f0cbd3ec FB |
487 | * could be a need for a window update. |
488 | * In the worst case, the remote will send | |
489 | * a window probe to get things going again | |
490 | */ | |
491 | } | |
3b46e624 | 492 | |
f0cbd3ec FB |
493 | /* |
494 | * Probe a still-connecting, non-blocking socket | |
495 | * to check if it's still alive | |
496 | */ | |
497 | #ifdef PROBE_CONN | |
498 | if (so->so_state & SS_ISFCONNECTING) { | |
02d2c54c | 499 | ret = recv(so->s, (char *)&ret, 0,0); |
3b46e624 | 500 | |
f0cbd3ec FB |
501 | if (ret < 0) { |
502 | /* XXX */ | |
503 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
504 | errno == EINPROGRESS || errno == ENOTCONN) | |
505 | continue; /* Still connecting, continue */ | |
3b46e624 | 506 | |
f0cbd3ec | 507 | /* else failed */ |
f932b6ce JK |
508 | so->so_state &= SS_PERSISTENT_MASK; |
509 | so->so_state |= SS_NOFDREF; | |
3b46e624 | 510 | |
f0cbd3ec FB |
511 | /* tcp_input will take care of it */ |
512 | } else { | |
02d2c54c | 513 | ret = send(so->s, &ret, 0,0); |
f0cbd3ec FB |
514 | if (ret < 0) { |
515 | /* XXX */ | |
516 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
517 | errno == EINPROGRESS || errno == ENOTCONN) | |
518 | continue; | |
519 | /* else failed */ | |
f932b6ce JK |
520 | so->so_state &= SS_PERSISTENT_MASK; |
521 | so->so_state |= SS_NOFDREF; | |
f0cbd3ec FB |
522 | } else |
523 | so->so_state &= ~SS_ISFCONNECTING; | |
3b46e624 | 524 | |
f0cbd3ec FB |
525 | } |
526 | tcp_input((struct mbuf *)NULL, sizeof(struct ip),so); | |
527 | } /* SS_ISFCONNECTING */ | |
528 | #endif | |
529 | } | |
3b46e624 | 530 | |
f0cbd3ec FB |
531 | /* |
532 | * Now UDP sockets. | |
533 | * Incoming packets are sent straight away, they're not buffered. | |
534 | * Incoming UDP data isn't buffered either. | |
535 | */ | |
460fec67 JK |
536 | for (so = slirp->udb.so_next; so != &slirp->udb; |
537 | so = so_next) { | |
f0cbd3ec | 538 | so_next = so->so_next; |
3b46e624 | 539 | |
f0cbd3ec FB |
540 | if (so->s != -1 && FD_ISSET(so->s, readfds)) { |
541 | sorecvfrom(so); | |
542 | } | |
543 | } | |
544 | } | |
5fafdf24 | 545 | |
f0cbd3ec FB |
546 | /* |
547 | * See if we can start outputting | |
548 | */ | |
460fec67 JK |
549 | if (slirp->if_queued) { |
550 | if_start(slirp); | |
551 | } | |
b1c99fcd | 552 | } |
02d2c54c FB |
553 | |
554 | /* clear global file descriptor sets. | |
555 | * these reside on the stack in vl.c | |
556 | * so they're unusable if we're not in | |
557 | * slirp_select_fill or slirp_select_poll. | |
558 | */ | |
559 | global_readfds = NULL; | |
560 | global_writefds = NULL; | |
561 | global_xfds = NULL; | |
f0cbd3ec FB |
562 | } |
563 | ||
564 | #define ETH_ALEN 6 | |
565 | #define ETH_HLEN 14 | |
566 | ||
567 | #define ETH_P_IP 0x0800 /* Internet Protocol packet */ | |
568 | #define ETH_P_ARP 0x0806 /* Address Resolution packet */ | |
569 | ||
570 | #define ARPOP_REQUEST 1 /* ARP request */ | |
571 | #define ARPOP_REPLY 2 /* ARP reply */ | |
572 | ||
5fafdf24 | 573 | struct ethhdr |
f0cbd3ec FB |
574 | { |
575 | unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ | |
576 | unsigned char h_source[ETH_ALEN]; /* source ether addr */ | |
577 | unsigned short h_proto; /* packet type ID field */ | |
578 | }; | |
579 | ||
580 | struct arphdr | |
581 | { | |
582 | unsigned short ar_hrd; /* format of hardware address */ | |
583 | unsigned short ar_pro; /* format of protocol address */ | |
584 | unsigned char ar_hln; /* length of hardware address */ | |
585 | unsigned char ar_pln; /* length of protocol address */ | |
586 | unsigned short ar_op; /* ARP opcode (command) */ | |
587 | ||
588 | /* | |
589 | * Ethernet looks like this : This bit is variable sized however... | |
590 | */ | |
591 | unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */ | |
a13a4126 | 592 | uint32_t ar_sip; /* sender IP address */ |
f0cbd3ec | 593 | unsigned char ar_tha[ETH_ALEN]; /* target hardware address */ |
a13a4126 JK |
594 | uint32_t ar_tip ; /* target IP address */ |
595 | } __attribute__((packed)); | |
f0cbd3ec | 596 | |
460fec67 | 597 | static void arp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
f0cbd3ec FB |
598 | { |
599 | struct ethhdr *eh = (struct ethhdr *)pkt; | |
600 | struct arphdr *ah = (struct arphdr *)(pkt + ETH_HLEN); | |
601 | uint8_t arp_reply[ETH_HLEN + sizeof(struct arphdr)]; | |
602 | struct ethhdr *reh = (struct ethhdr *)arp_reply; | |
603 | struct arphdr *rah = (struct arphdr *)(arp_reply + ETH_HLEN); | |
604 | int ar_op; | |
a3d4af03 | 605 | struct ex_list *ex_ptr; |
f0cbd3ec FB |
606 | |
607 | ar_op = ntohs(ah->ar_op); | |
608 | switch(ar_op) { | |
609 | case ARPOP_REQUEST: | |
460fec67 JK |
610 | if ((ah->ar_tip & slirp->vnetwork_mask.s_addr) == |
611 | slirp->vnetwork_addr.s_addr) { | |
612 | if (ah->ar_tip == slirp->vnameserver_addr.s_addr || | |
613 | ah->ar_tip == slirp->vhost_addr.s_addr) | |
a3d4af03 | 614 | goto arp_ok; |
460fec67 | 615 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { |
a13a4126 | 616 | if (ex_ptr->ex_addr.s_addr == ah->ar_tip) |
a3d4af03 FB |
617 | goto arp_ok; |
618 | } | |
619 | return; | |
620 | arp_ok: | |
f0cbd3ec | 621 | /* XXX: make an ARP request to have the client address */ |
460fec67 | 622 | memcpy(slirp->client_ethaddr, eh->h_source, ETH_ALEN); |
f0cbd3ec FB |
623 | |
624 | /* ARP request for alias/dns mac address */ | |
625 | memcpy(reh->h_dest, pkt + ETH_ALEN, ETH_ALEN); | |
a13a4126 JK |
626 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); |
627 | memcpy(&reh->h_source[2], &ah->ar_tip, 4); | |
f0cbd3ec FB |
628 | reh->h_proto = htons(ETH_P_ARP); |
629 | ||
630 | rah->ar_hrd = htons(1); | |
631 | rah->ar_pro = htons(ETH_P_IP); | |
632 | rah->ar_hln = ETH_ALEN; | |
633 | rah->ar_pln = 4; | |
634 | rah->ar_op = htons(ARPOP_REPLY); | |
635 | memcpy(rah->ar_sha, reh->h_source, ETH_ALEN); | |
a13a4126 | 636 | rah->ar_sip = ah->ar_tip; |
f0cbd3ec | 637 | memcpy(rah->ar_tha, ah->ar_sha, ETH_ALEN); |
a13a4126 | 638 | rah->ar_tip = ah->ar_sip; |
9f8bd042 | 639 | slirp_output(slirp->opaque, arp_reply, sizeof(arp_reply)); |
f0cbd3ec FB |
640 | } |
641 | break; | |
de806f07 FB |
642 | case ARPOP_REPLY: |
643 | /* reply to request of client mac address ? */ | |
460fec67 JK |
644 | if (!memcmp(slirp->client_ethaddr, zero_ethaddr, ETH_ALEN) && |
645 | ah->ar_sip == slirp->client_ipaddr.s_addr) { | |
646 | memcpy(slirp->client_ethaddr, ah->ar_sha, ETH_ALEN); | |
de806f07 FB |
647 | } |
648 | break; | |
f0cbd3ec FB |
649 | default: |
650 | break; | |
651 | } | |
652 | } | |
653 | ||
9f8bd042 | 654 | void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
f0cbd3ec FB |
655 | { |
656 | struct mbuf *m; | |
657 | int proto; | |
658 | ||
659 | if (pkt_len < ETH_HLEN) | |
660 | return; | |
3b46e624 | 661 | |
f0cbd3ec FB |
662 | proto = ntohs(*(uint16_t *)(pkt + 12)); |
663 | switch(proto) { | |
664 | case ETH_P_ARP: | |
460fec67 | 665 | arp_input(slirp, pkt, pkt_len); |
f0cbd3ec FB |
666 | break; |
667 | case ETH_P_IP: | |
460fec67 | 668 | m = m_get(slirp); |
f0cbd3ec FB |
669 | if (!m) |
670 | return; | |
38f3e7c2 | 671 | /* Note: we add to align the IP header */ |
e8e880a7 AJ |
672 | if (M_FREEROOM(m) < pkt_len + 2) { |
673 | m_inc(m, pkt_len + 2); | |
674 | } | |
38f3e7c2 FB |
675 | m->m_len = pkt_len + 2; |
676 | memcpy(m->m_data + 2, pkt, pkt_len); | |
f0cbd3ec | 677 | |
38f3e7c2 FB |
678 | m->m_data += 2 + ETH_HLEN; |
679 | m->m_len -= 2 + ETH_HLEN; | |
f0cbd3ec FB |
680 | |
681 | ip_input(m); | |
682 | break; | |
683 | default: | |
684 | break; | |
685 | } | |
686 | } | |
687 | ||
688 | /* output the IP packet to the ethernet device */ | |
460fec67 | 689 | void if_encap(Slirp *slirp, const uint8_t *ip_data, int ip_data_len) |
f0cbd3ec FB |
690 | { |
691 | uint8_t buf[1600]; | |
692 | struct ethhdr *eh = (struct ethhdr *)buf; | |
693 | ||
694 | if (ip_data_len + ETH_HLEN > sizeof(buf)) | |
695 | return; | |
de806f07 | 696 | |
460fec67 | 697 | if (!memcmp(slirp->client_ethaddr, zero_ethaddr, ETH_ALEN)) { |
de806f07 FB |
698 | uint8_t arp_req[ETH_HLEN + sizeof(struct arphdr)]; |
699 | struct ethhdr *reh = (struct ethhdr *)arp_req; | |
700 | struct arphdr *rah = (struct arphdr *)(arp_req + ETH_HLEN); | |
701 | const struct ip *iph = (const struct ip *)ip_data; | |
702 | ||
703 | /* If the client addr is not known, there is no point in | |
704 | sending the packet to it. Normally the sender should have | |
705 | done an ARP request to get its MAC address. Here we do it | |
706 | in place of sending the packet and we hope that the sender | |
707 | will retry sending its packet. */ | |
708 | memset(reh->h_dest, 0xff, ETH_ALEN); | |
a13a4126 | 709 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); |
460fec67 | 710 | memcpy(&reh->h_source[2], &slirp->vhost_addr, 4); |
de806f07 FB |
711 | reh->h_proto = htons(ETH_P_ARP); |
712 | rah->ar_hrd = htons(1); | |
713 | rah->ar_pro = htons(ETH_P_IP); | |
714 | rah->ar_hln = ETH_ALEN; | |
715 | rah->ar_pln = 4; | |
716 | rah->ar_op = htons(ARPOP_REQUEST); | |
717 | /* source hw addr */ | |
a13a4126 | 718 | memcpy(rah->ar_sha, special_ethaddr, ETH_ALEN - 4); |
460fec67 | 719 | memcpy(&rah->ar_sha[2], &slirp->vhost_addr, 4); |
de806f07 | 720 | /* source IP */ |
460fec67 | 721 | rah->ar_sip = slirp->vhost_addr.s_addr; |
de806f07 FB |
722 | /* target hw addr (none) */ |
723 | memset(rah->ar_tha, 0, ETH_ALEN); | |
724 | /* target IP */ | |
a13a4126 | 725 | rah->ar_tip = iph->ip_dst.s_addr; |
460fec67 | 726 | slirp->client_ipaddr = iph->ip_dst; |
9f8bd042 | 727 | slirp_output(slirp->opaque, arp_req, sizeof(arp_req)); |
de806f07 | 728 | } else { |
460fec67 | 729 | memcpy(eh->h_dest, slirp->client_ethaddr, ETH_ALEN); |
a13a4126 | 730 | memcpy(eh->h_source, special_ethaddr, ETH_ALEN - 4); |
de806f07 | 731 | /* XXX: not correct */ |
460fec67 | 732 | memcpy(&eh->h_source[2], &slirp->vhost_addr, 4); |
de806f07 FB |
733 | eh->h_proto = htons(ETH_P_IP); |
734 | memcpy(buf + sizeof(struct ethhdr), ip_data, ip_data_len); | |
9f8bd042 | 735 | slirp_output(slirp->opaque, buf, ip_data_len + ETH_HLEN); |
de806f07 | 736 | } |
f0cbd3ec | 737 | } |
9bf05444 | 738 | |
9c12a6f2 | 739 | /* Drop host forwarding rule, return 0 if found. */ |
9f8bd042 JK |
740 | int slirp_remove_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
741 | int host_port) | |
c1261d8d AG |
742 | { |
743 | struct socket *so; | |
460fec67 | 744 | struct socket *head = (is_udp ? &slirp->udb : &slirp->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 | ||
9f8bd042 JK |
764 | int slirp_add_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
765 | int host_port, struct in_addr guest_addr, int guest_port) | |
9bf05444 | 766 | { |
a13a4126 | 767 | if (!guest_addr.s_addr) { |
460fec67 | 768 | guest_addr = slirp->vdhcp_startaddr; |
a13a4126 | 769 | } |
9bf05444 | 770 | if (is_udp) { |
460fec67 JK |
771 | if (!udp_listen(slirp, host_addr.s_addr, htons(host_port), |
772 | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) | |
9bf05444 FB |
773 | return -1; |
774 | } else { | |
460fec67 JK |
775 | if (!tcp_listen(slirp, host_addr.s_addr, htons(host_port), |
776 | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) | |
9bf05444 FB |
777 | return -1; |
778 | } | |
779 | return 0; | |
780 | } | |
a3d4af03 | 781 | |
9f8bd042 | 782 | int slirp_add_exec(Slirp *slirp, int do_pty, const void *args, |
bb53fc53 | 783 | struct in_addr *guest_addr, int guest_port) |
a3d4af03 | 784 | { |
bb53fc53 JK |
785 | if (!guest_addr->s_addr) { |
786 | guest_addr->s_addr = slirp->vnetwork_addr.s_addr | | |
460fec67 | 787 | (htonl(0x0204) & ~slirp->vnetwork_mask.s_addr); |
c92ef6a2 | 788 | } |
bb53fc53 | 789 | if ((guest_addr->s_addr & slirp->vnetwork_mask.s_addr) != |
460fec67 | 790 | slirp->vnetwork_addr.s_addr || |
bb53fc53 JK |
791 | guest_addr->s_addr == slirp->vhost_addr.s_addr || |
792 | guest_addr->s_addr == slirp->vnameserver_addr.s_addr) { | |
a13a4126 JK |
793 | return -1; |
794 | } | |
bb53fc53 | 795 | return add_exec(&slirp->exec_list, do_pty, (char *)args, *guest_addr, |
a13a4126 | 796 | htons(guest_port)); |
a3d4af03 | 797 | } |
e1c5a2b3 AL |
798 | |
799 | ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags) | |
800 | { | |
801 | if (so->s == -1 && so->extra) { | |
802 | qemu_chr_write(so->extra, buf, len); | |
803 | return len; | |
804 | } | |
805 | ||
806 | return send(so->s, buf, len, flags); | |
807 | } | |
808 | ||
a13a4126 | 809 | static struct socket * |
460fec67 | 810 | slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port) |
e1c5a2b3 | 811 | { |
a13a4126 | 812 | struct socket *so; |
e1c5a2b3 | 813 | |
460fec67 | 814 | for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) { |
a13a4126 JK |
815 | if (so->so_faddr.s_addr == guest_addr.s_addr && |
816 | htons(so->so_fport) == guest_port) { | |
817 | return so; | |
818 | } | |
819 | } | |
820 | return NULL; | |
e1c5a2b3 AL |
821 | } |
822 | ||
9f8bd042 JK |
823 | size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr, |
824 | int guest_port) | |
e1c5a2b3 AL |
825 | { |
826 | struct iovec iov[2]; | |
827 | struct socket *so; | |
828 | ||
460fec67 | 829 | so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); |
e1c5a2b3 AL |
830 | |
831 | if (!so || so->so_state & SS_NOFDREF) | |
832 | return 0; | |
833 | ||
834 | if (!CONN_CANFRCV(so) || so->so_snd.sb_cc >= (so->so_snd.sb_datalen/2)) | |
835 | return 0; | |
836 | ||
837 | return sopreprbuf(so, iov, NULL); | |
838 | } | |
839 | ||
9f8bd042 | 840 | void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr, int guest_port, |
c92ef6a2 | 841 | const uint8_t *buf, int size) |
e1c5a2b3 AL |
842 | { |
843 | int ret; | |
460fec67 | 844 | struct socket *so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); |
a13a4126 | 845 | |
e1c5a2b3 AL |
846 | if (!so) |
847 | return; | |
848 | ||
0580ac91 | 849 | ret = soreadbuf(so, (const char *)buf, size); |
e1c5a2b3 AL |
850 | |
851 | if (ret > 0) | |
852 | tcp_output(sototcpcb(so)); | |
853 | } | |
062e5527 AL |
854 | |
855 | static void slirp_tcp_save(QEMUFile *f, struct tcpcb *tp) | |
856 | { | |
857 | int i; | |
858 | ||
859 | qemu_put_sbe16(f, tp->t_state); | |
860 | for (i = 0; i < TCPT_NTIMERS; i++) | |
861 | qemu_put_sbe16(f, tp->t_timer[i]); | |
862 | qemu_put_sbe16(f, tp->t_rxtshift); | |
863 | qemu_put_sbe16(f, tp->t_rxtcur); | |
864 | qemu_put_sbe16(f, tp->t_dupacks); | |
865 | qemu_put_be16(f, tp->t_maxseg); | |
866 | qemu_put_sbyte(f, tp->t_force); | |
867 | qemu_put_be16(f, tp->t_flags); | |
868 | qemu_put_be32(f, tp->snd_una); | |
869 | qemu_put_be32(f, tp->snd_nxt); | |
870 | qemu_put_be32(f, tp->snd_up); | |
871 | qemu_put_be32(f, tp->snd_wl1); | |
872 | qemu_put_be32(f, tp->snd_wl2); | |
873 | qemu_put_be32(f, tp->iss); | |
874 | qemu_put_be32(f, tp->snd_wnd); | |
875 | qemu_put_be32(f, tp->rcv_wnd); | |
876 | qemu_put_be32(f, tp->rcv_nxt); | |
877 | qemu_put_be32(f, tp->rcv_up); | |
878 | qemu_put_be32(f, tp->irs); | |
879 | qemu_put_be32(f, tp->rcv_adv); | |
880 | qemu_put_be32(f, tp->snd_max); | |
881 | qemu_put_be32(f, tp->snd_cwnd); | |
882 | qemu_put_be32(f, tp->snd_ssthresh); | |
883 | qemu_put_sbe16(f, tp->t_idle); | |
884 | qemu_put_sbe16(f, tp->t_rtt); | |
885 | qemu_put_be32(f, tp->t_rtseq); | |
886 | qemu_put_sbe16(f, tp->t_srtt); | |
887 | qemu_put_sbe16(f, tp->t_rttvar); | |
888 | qemu_put_be16(f, tp->t_rttmin); | |
889 | qemu_put_be32(f, tp->max_sndwnd); | |
890 | qemu_put_byte(f, tp->t_oobflags); | |
891 | qemu_put_byte(f, tp->t_iobc); | |
892 | qemu_put_sbe16(f, tp->t_softerror); | |
893 | qemu_put_byte(f, tp->snd_scale); | |
894 | qemu_put_byte(f, tp->rcv_scale); | |
895 | qemu_put_byte(f, tp->request_r_scale); | |
896 | qemu_put_byte(f, tp->requested_s_scale); | |
897 | qemu_put_be32(f, tp->ts_recent); | |
898 | qemu_put_be32(f, tp->ts_recent_age); | |
899 | qemu_put_be32(f, tp->last_ack_sent); | |
900 | } | |
901 | ||
902 | static void slirp_sbuf_save(QEMUFile *f, struct sbuf *sbuf) | |
903 | { | |
904 | uint32_t off; | |
905 | ||
906 | qemu_put_be32(f, sbuf->sb_cc); | |
907 | qemu_put_be32(f, sbuf->sb_datalen); | |
908 | off = (uint32_t)(sbuf->sb_wptr - sbuf->sb_data); | |
909 | qemu_put_sbe32(f, off); | |
910 | off = (uint32_t)(sbuf->sb_rptr - sbuf->sb_data); | |
911 | qemu_put_sbe32(f, off); | |
912 | qemu_put_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); | |
913 | } | |
914 | ||
915 | static void slirp_socket_save(QEMUFile *f, struct socket *so) | |
916 | { | |
917 | qemu_put_be32(f, so->so_urgc); | |
918 | qemu_put_be32(f, so->so_faddr.s_addr); | |
919 | qemu_put_be32(f, so->so_laddr.s_addr); | |
920 | qemu_put_be16(f, so->so_fport); | |
921 | qemu_put_be16(f, so->so_lport); | |
922 | qemu_put_byte(f, so->so_iptos); | |
923 | qemu_put_byte(f, so->so_emu); | |
924 | qemu_put_byte(f, so->so_type); | |
925 | qemu_put_be32(f, so->so_state); | |
926 | slirp_sbuf_save(f, &so->so_rcv); | |
927 | slirp_sbuf_save(f, &so->so_snd); | |
928 | slirp_tcp_save(f, so->so_tcpcb); | |
929 | } | |
930 | ||
0a1f851e JK |
931 | static void slirp_bootp_save(QEMUFile *f, Slirp *slirp) |
932 | { | |
933 | int i; | |
934 | ||
935 | for (i = 0; i < NB_BOOTP_CLIENTS; i++) { | |
936 | qemu_put_be16(f, slirp->bootp_clients[i].allocated); | |
937 | qemu_put_buffer(f, slirp->bootp_clients[i].macaddr, 6); | |
938 | } | |
939 | } | |
940 | ||
062e5527 AL |
941 | static void slirp_state_save(QEMUFile *f, void *opaque) |
942 | { | |
460fec67 | 943 | Slirp *slirp = opaque; |
062e5527 AL |
944 | struct ex_list *ex_ptr; |
945 | ||
460fec67 | 946 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) |
062e5527 AL |
947 | if (ex_ptr->ex_pty == 3) { |
948 | struct socket *so; | |
460fec67 JK |
949 | so = slirp_find_ctl_socket(slirp, ex_ptr->ex_addr, |
950 | ntohs(ex_ptr->ex_fport)); | |
062e5527 AL |
951 | if (!so) |
952 | continue; | |
953 | ||
954 | qemu_put_byte(f, 42); | |
955 | slirp_socket_save(f, so); | |
956 | } | |
957 | qemu_put_byte(f, 0); | |
285f7a62 | 958 | |
460fec67 | 959 | qemu_put_be16(f, slirp->ip_id); |
0a1f851e JK |
960 | |
961 | slirp_bootp_save(f, slirp); | |
062e5527 AL |
962 | } |
963 | ||
964 | static void slirp_tcp_load(QEMUFile *f, struct tcpcb *tp) | |
965 | { | |
966 | int i; | |
967 | ||
968 | tp->t_state = qemu_get_sbe16(f); | |
969 | for (i = 0; i < TCPT_NTIMERS; i++) | |
970 | tp->t_timer[i] = qemu_get_sbe16(f); | |
971 | tp->t_rxtshift = qemu_get_sbe16(f); | |
972 | tp->t_rxtcur = qemu_get_sbe16(f); | |
973 | tp->t_dupacks = qemu_get_sbe16(f); | |
974 | tp->t_maxseg = qemu_get_be16(f); | |
975 | tp->t_force = qemu_get_sbyte(f); | |
976 | tp->t_flags = qemu_get_be16(f); | |
977 | tp->snd_una = qemu_get_be32(f); | |
978 | tp->snd_nxt = qemu_get_be32(f); | |
979 | tp->snd_up = qemu_get_be32(f); | |
980 | tp->snd_wl1 = qemu_get_be32(f); | |
981 | tp->snd_wl2 = qemu_get_be32(f); | |
982 | tp->iss = qemu_get_be32(f); | |
983 | tp->snd_wnd = qemu_get_be32(f); | |
984 | tp->rcv_wnd = qemu_get_be32(f); | |
985 | tp->rcv_nxt = qemu_get_be32(f); | |
986 | tp->rcv_up = qemu_get_be32(f); | |
987 | tp->irs = qemu_get_be32(f); | |
988 | tp->rcv_adv = qemu_get_be32(f); | |
989 | tp->snd_max = qemu_get_be32(f); | |
990 | tp->snd_cwnd = qemu_get_be32(f); | |
991 | tp->snd_ssthresh = qemu_get_be32(f); | |
992 | tp->t_idle = qemu_get_sbe16(f); | |
993 | tp->t_rtt = qemu_get_sbe16(f); | |
994 | tp->t_rtseq = qemu_get_be32(f); | |
995 | tp->t_srtt = qemu_get_sbe16(f); | |
996 | tp->t_rttvar = qemu_get_sbe16(f); | |
997 | tp->t_rttmin = qemu_get_be16(f); | |
998 | tp->max_sndwnd = qemu_get_be32(f); | |
999 | tp->t_oobflags = qemu_get_byte(f); | |
1000 | tp->t_iobc = qemu_get_byte(f); | |
1001 | tp->t_softerror = qemu_get_sbe16(f); | |
1002 | tp->snd_scale = qemu_get_byte(f); | |
1003 | tp->rcv_scale = qemu_get_byte(f); | |
1004 | tp->request_r_scale = qemu_get_byte(f); | |
1005 | tp->requested_s_scale = qemu_get_byte(f); | |
1006 | tp->ts_recent = qemu_get_be32(f); | |
1007 | tp->ts_recent_age = qemu_get_be32(f); | |
1008 | tp->last_ack_sent = qemu_get_be32(f); | |
1009 | tcp_template(tp); | |
1010 | } | |
1011 | ||
1012 | static int slirp_sbuf_load(QEMUFile *f, struct sbuf *sbuf) | |
1013 | { | |
1014 | uint32_t off, sb_cc, sb_datalen; | |
1015 | ||
1016 | sb_cc = qemu_get_be32(f); | |
1017 | sb_datalen = qemu_get_be32(f); | |
1018 | ||
1019 | sbreserve(sbuf, sb_datalen); | |
1020 | ||
1021 | if (sbuf->sb_datalen != sb_datalen) | |
1022 | return -ENOMEM; | |
1023 | ||
1024 | sbuf->sb_cc = sb_cc; | |
1025 | ||
1026 | off = qemu_get_sbe32(f); | |
1027 | sbuf->sb_wptr = sbuf->sb_data + off; | |
1028 | off = qemu_get_sbe32(f); | |
1029 | sbuf->sb_rptr = sbuf->sb_data + off; | |
1030 | qemu_get_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); | |
1031 | ||
1032 | return 0; | |
1033 | } | |
1034 | ||
1035 | static int slirp_socket_load(QEMUFile *f, struct socket *so) | |
1036 | { | |
1037 | if (tcp_attach(so) < 0) | |
1038 | return -ENOMEM; | |
1039 | ||
1040 | so->so_urgc = qemu_get_be32(f); | |
1041 | so->so_faddr.s_addr = qemu_get_be32(f); | |
1042 | so->so_laddr.s_addr = qemu_get_be32(f); | |
1043 | so->so_fport = qemu_get_be16(f); | |
1044 | so->so_lport = qemu_get_be16(f); | |
1045 | so->so_iptos = qemu_get_byte(f); | |
1046 | so->so_emu = qemu_get_byte(f); | |
1047 | so->so_type = qemu_get_byte(f); | |
1048 | so->so_state = qemu_get_be32(f); | |
1049 | if (slirp_sbuf_load(f, &so->so_rcv) < 0) | |
1050 | return -ENOMEM; | |
1051 | if (slirp_sbuf_load(f, &so->so_snd) < 0) | |
1052 | return -ENOMEM; | |
1053 | slirp_tcp_load(f, so->so_tcpcb); | |
1054 | ||
1055 | return 0; | |
1056 | } | |
1057 | ||
0a1f851e JK |
1058 | static void slirp_bootp_load(QEMUFile *f, Slirp *slirp) |
1059 | { | |
1060 | int i; | |
1061 | ||
1062 | for (i = 0; i < NB_BOOTP_CLIENTS; i++) { | |
1063 | slirp->bootp_clients[i].allocated = qemu_get_be16(f); | |
1064 | qemu_get_buffer(f, slirp->bootp_clients[i].macaddr, 6); | |
1065 | } | |
1066 | } | |
1067 | ||
062e5527 AL |
1068 | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id) |
1069 | { | |
460fec67 | 1070 | Slirp *slirp = opaque; |
062e5527 AL |
1071 | struct ex_list *ex_ptr; |
1072 | int r; | |
1073 | ||
1074 | while ((r = qemu_get_byte(f))) { | |
1075 | int ret; | |
460fec67 | 1076 | struct socket *so = socreate(slirp); |
062e5527 AL |
1077 | |
1078 | if (!so) | |
1079 | return -ENOMEM; | |
1080 | ||
1081 | ret = slirp_socket_load(f, so); | |
1082 | ||
1083 | if (ret < 0) | |
1084 | return ret; | |
1085 | ||
460fec67 JK |
1086 | if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) != |
1087 | slirp->vnetwork_addr.s_addr) { | |
062e5527 | 1088 | return -EINVAL; |
a13a4126 | 1089 | } |
460fec67 | 1090 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { |
062e5527 | 1091 | if (ex_ptr->ex_pty == 3 && |
a13a4126 JK |
1092 | so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr && |
1093 | so->so_fport == ex_ptr->ex_fport) { | |
062e5527 | 1094 | break; |
a13a4126 JK |
1095 | } |
1096 | } | |
062e5527 AL |
1097 | if (!ex_ptr) |
1098 | return -EINVAL; | |
1099 | ||
0580ac91 | 1100 | so->extra = (void *)ex_ptr->ex_exec; |
062e5527 AL |
1101 | } |
1102 | ||
285f7a62 | 1103 | if (version_id >= 2) { |
460fec67 | 1104 | slirp->ip_id = qemu_get_be16(f); |
285f7a62 JK |
1105 | } |
1106 | ||
0a1f851e JK |
1107 | if (version_id >= 3) { |
1108 | slirp_bootp_load(f, slirp); | |
1109 | } | |
1110 | ||
062e5527 AL |
1111 | return 0; |
1112 | } |