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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" |
f833ef21 | 25 | #include "qemu-timer.h" |
0580ac91 | 26 | #include "qemu-char.h" |
f0cbd3ec | 27 | #include "slirp.h" |
062e5527 | 28 | #include "hw/hw.h" |
f0cbd3ec FB |
29 | |
30 | /* host address */ | |
31 | struct in_addr our_addr; | |
32 | /* host dns address */ | |
33 | struct in_addr dns_addr; | |
34 | /* host loopback address */ | |
35 | struct in_addr loopback_addr; | |
36 | ||
a13a4126 | 37 | /* emulated hosts use the MAC addr 52:55:IP:IP:IP:IP */ |
9634d903 | 38 | static const uint8_t special_ethaddr[6] = { |
a13a4126 | 39 | 0x52, 0x55, 0x00, 0x00, 0x00, 0x00 |
f0cbd3ec FB |
40 | }; |
41 | ||
de806f07 | 42 | static const uint8_t zero_ethaddr[6] = { 0, 0, 0, 0, 0, 0 }; |
f0cbd3ec | 43 | |
f0cbd3ec FB |
44 | /* XXX: suppress those select globals */ |
45 | fd_set *global_readfds, *global_writefds, *global_xfds; | |
46 | ||
f1d99bbd JK |
47 | u_int curtime; |
48 | static u_int time_fasttimo, last_slowtimo; | |
49 | static int do_slowtimo; | |
50 | ||
45578f49 | 51 | static TAILQ_HEAD(slirp_instances, Slirp) slirp_instances = |
b1c99fcd | 52 | TAILQ_HEAD_INITIALIZER(slirp_instances); |
115defd1 | 53 | |
f0cbd3ec FB |
54 | #ifdef _WIN32 |
55 | ||
56 | static int get_dns_addr(struct in_addr *pdns_addr) | |
57 | { | |
379ff53d FB |
58 | FIXED_INFO *FixedInfo=NULL; |
59 | ULONG BufLen; | |
60 | DWORD ret; | |
61 | IP_ADDR_STRING *pIPAddr; | |
62 | struct in_addr tmp_addr; | |
3b46e624 | 63 | |
379ff53d FB |
64 | FixedInfo = (FIXED_INFO *)GlobalAlloc(GPTR, sizeof(FIXED_INFO)); |
65 | BufLen = sizeof(FIXED_INFO); | |
3b46e624 | 66 | |
379ff53d FB |
67 | if (ERROR_BUFFER_OVERFLOW == GetNetworkParams(FixedInfo, &BufLen)) { |
68 | if (FixedInfo) { | |
69 | GlobalFree(FixedInfo); | |
70 | FixedInfo = NULL; | |
71 | } | |
72 | FixedInfo = GlobalAlloc(GPTR, BufLen); | |
73 | } | |
5fafdf24 | 74 | |
379ff53d FB |
75 | if ((ret = GetNetworkParams(FixedInfo, &BufLen)) != ERROR_SUCCESS) { |
76 | printf("GetNetworkParams failed. ret = %08x\n", (u_int)ret ); | |
77 | if (FixedInfo) { | |
78 | GlobalFree(FixedInfo); | |
79 | FixedInfo = NULL; | |
80 | } | |
81 | return -1; | |
82 | } | |
3b46e624 | 83 | |
379ff53d FB |
84 | pIPAddr = &(FixedInfo->DnsServerList); |
85 | inet_aton(pIPAddr->IpAddress.String, &tmp_addr); | |
86 | *pdns_addr = tmp_addr; | |
379ff53d FB |
87 | if (FixedInfo) { |
88 | GlobalFree(FixedInfo); | |
89 | FixedInfo = NULL; | |
90 | } | |
91 | return 0; | |
f0cbd3ec FB |
92 | } |
93 | ||
df461894 JK |
94 | static void winsock_cleanup(void) |
95 | { | |
96 | WSACleanup(); | |
97 | } | |
98 | ||
f0cbd3ec FB |
99 | #else |
100 | ||
101 | static int get_dns_addr(struct in_addr *pdns_addr) | |
102 | { | |
103 | char buff[512]; | |
363a37d5 | 104 | char buff2[257]; |
f0cbd3ec FB |
105 | FILE *f; |
106 | int found = 0; | |
107 | struct in_addr tmp_addr; | |
3b46e624 | 108 | |
f0cbd3ec FB |
109 | f = fopen("/etc/resolv.conf", "r"); |
110 | if (!f) | |
111 | return -1; | |
112 | ||
31a60e22 | 113 | #ifdef DEBUG |
f0cbd3ec | 114 | lprint("IP address of your DNS(s): "); |
31a60e22 | 115 | #endif |
f0cbd3ec FB |
116 | while (fgets(buff, 512, f) != NULL) { |
117 | if (sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1) { | |
118 | if (!inet_aton(buff2, &tmp_addr)) | |
119 | continue; | |
120 | if (tmp_addr.s_addr == loopback_addr.s_addr) | |
121 | tmp_addr = our_addr; | |
122 | /* If it's the first one, set it to dns_addr */ | |
123 | if (!found) | |
124 | *pdns_addr = tmp_addr; | |
31a60e22 | 125 | #ifdef DEBUG |
f0cbd3ec FB |
126 | else |
127 | lprint(", "); | |
31a60e22 | 128 | #endif |
f0cbd3ec | 129 | if (++found > 3) { |
31a60e22 | 130 | #ifdef DEBUG |
f0cbd3ec | 131 | lprint("(more)"); |
31a60e22 | 132 | #endif |
f0cbd3ec | 133 | break; |
31a60e22 BS |
134 | } |
135 | #ifdef DEBUG | |
136 | else | |
f0cbd3ec | 137 | lprint("%s", inet_ntoa(tmp_addr)); |
31a60e22 | 138 | #endif |
f0cbd3ec FB |
139 | } |
140 | } | |
1d43a717 | 141 | fclose(f); |
f0cbd3ec FB |
142 | if (!found) |
143 | return -1; | |
144 | return 0; | |
145 | } | |
146 | ||
147 | #endif | |
148 | ||
df461894 | 149 | static void slirp_init_once(void) |
379ff53d | 150 | { |
df461894 JK |
151 | static int initialized; |
152 | struct hostent *he; | |
153 | char our_name[256]; | |
154 | #ifdef _WIN32 | |
155 | WSADATA Data; | |
379ff53d FB |
156 | #endif |
157 | ||
df461894 JK |
158 | if (initialized) { |
159 | return; | |
160 | } | |
161 | initialized = 1; | |
162 | ||
163 | #ifdef _WIN32 | |
164 | WSAStartup(MAKEWORD(2,0), &Data); | |
165 | atexit(winsock_cleanup); | |
166 | #endif | |
167 | ||
168 | loopback_addr.s_addr = htonl(INADDR_LOOPBACK); | |
169 | ||
170 | /* FIXME: This address may change during runtime */ | |
171 | if (gethostname(our_name, sizeof(our_name)) == 0) { | |
172 | he = gethostbyname(our_name); | |
173 | if (he) { | |
174 | our_addr = *(struct in_addr *)he->h_addr; | |
175 | } | |
176 | } | |
177 | if (our_addr.s_addr == 0) { | |
178 | our_addr = loopback_addr; | |
179 | } | |
180 | ||
181 | /* FIXME: This address may change during runtime */ | |
182 | if (get_dns_addr(&dns_addr) < 0) { | |
183 | dns_addr = loopback_addr; | |
184 | } | |
185 | } | |
186 | ||
062e5527 AL |
187 | static void slirp_state_save(QEMUFile *f, void *opaque); |
188 | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id); | |
189 | ||
9f8bd042 JK |
190 | Slirp *slirp_init(int restricted, struct in_addr vnetwork, |
191 | struct in_addr vnetmask, struct in_addr vhost, | |
192 | const char *vhostname, const char *tftp_path, | |
193 | const char *bootfile, struct in_addr vdhcp_start, | |
194 | struct in_addr vnameserver, void *opaque) | |
f0cbd3ec | 195 | { |
ad0d8c4c | 196 | Slirp *slirp = qemu_mallocz(sizeof(Slirp)); |
460fec67 | 197 | |
df461894 | 198 | slirp_init_once(); |
379ff53d | 199 | |
460fec67 | 200 | slirp->restricted = restricted; |
f0cbd3ec | 201 | |
460fec67 JK |
202 | if_init(slirp); |
203 | ip_init(slirp); | |
f0cbd3ec FB |
204 | |
205 | /* Initialise mbufs *after* setting the MTU */ | |
460fec67 | 206 | m_init(slirp); |
f0cbd3ec | 207 | |
460fec67 JK |
208 | slirp->vnetwork_addr = vnetwork; |
209 | slirp->vnetwork_mask = vnetmask; | |
210 | slirp->vhost_addr = vhost; | |
c92ef6a2 | 211 | if (vhostname) { |
460fec67 JK |
212 | pstrcpy(slirp->client_hostname, sizeof(slirp->client_hostname), |
213 | vhostname); | |
a13a4126 | 214 | } |
ad196a9d | 215 | if (tftp_path) { |
460fec67 | 216 | slirp->tftp_prefix = qemu_strdup(tftp_path); |
ad196a9d | 217 | } |
ad196a9d | 218 | if (bootfile) { |
460fec67 | 219 | slirp->bootp_filename = qemu_strdup(bootfile); |
ad196a9d | 220 | } |
460fec67 JK |
221 | slirp->vdhcp_startaddr = vdhcp_start; |
222 | slirp->vnameserver_addr = vnameserver; | |
ad196a9d | 223 | |
9f8bd042 JK |
224 | slirp->opaque = opaque; |
225 | ||
0a1f851e | 226 | register_savevm("slirp", 0, 3, slirp_state_save, slirp_state_load, slirp); |
9f8bd042 | 227 | |
b1c99fcd | 228 | TAILQ_INSERT_TAIL(&slirp_instances, slirp, entry); |
ad0d8c4c | 229 | |
9f8bd042 | 230 | return slirp; |
f0cbd3ec FB |
231 | } |
232 | ||
ad0d8c4c JK |
233 | void slirp_cleanup(Slirp *slirp) |
234 | { | |
b1c99fcd JK |
235 | TAILQ_REMOVE(&slirp_instances, slirp, entry); |
236 | ||
ad0d8c4c JK |
237 | unregister_savevm("slirp", slirp); |
238 | ||
239 | qemu_free(slirp->tftp_prefix); | |
240 | qemu_free(slirp->bootp_filename); | |
241 | qemu_free(slirp); | |
ad0d8c4c JK |
242 | } |
243 | ||
f0cbd3ec FB |
244 | #define CONN_CANFSEND(so) (((so)->so_state & (SS_FCANTSENDMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) |
245 | #define CONN_CANFRCV(so) (((so)->so_state & (SS_FCANTRCVMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) | |
246 | #define UPD_NFDS(x) if (nfds < (x)) nfds = (x) | |
247 | ||
5fafdf24 | 248 | void slirp_select_fill(int *pnfds, |
f0cbd3ec FB |
249 | fd_set *readfds, fd_set *writefds, fd_set *xfds) |
250 | { | |
b1c99fcd | 251 | Slirp *slirp; |
f0cbd3ec | 252 | struct socket *so, *so_next; |
f0cbd3ec | 253 | int nfds; |
f0cbd3ec | 254 | |
b1c99fcd | 255 | if (TAILQ_EMPTY(&slirp_instances)) { |
d918f23e JK |
256 | return; |
257 | } | |
258 | ||
f0cbd3ec FB |
259 | /* fail safe */ |
260 | global_readfds = NULL; | |
261 | global_writefds = NULL; | |
262 | global_xfds = NULL; | |
3b46e624 | 263 | |
f0cbd3ec FB |
264 | nfds = *pnfds; |
265 | /* | |
266 | * First, TCP sockets | |
267 | */ | |
268 | do_slowtimo = 0; | |
d918f23e | 269 | |
b1c99fcd | 270 | TAILQ_FOREACH(slirp, &slirp_instances, entry) { |
5fafdf24 | 271 | /* |
f0cbd3ec FB |
272 | * *_slowtimo needs calling if there are IP fragments |
273 | * in the fragment queue, or there are TCP connections active | |
274 | */ | |
b1c99fcd | 275 | do_slowtimo |= ((slirp->tcb.so_next != &slirp->tcb) || |
460fec67 | 276 | (&slirp->ipq.ip_link != slirp->ipq.ip_link.next)); |
3b46e624 | 277 | |
460fec67 JK |
278 | for (so = slirp->tcb.so_next; so != &slirp->tcb; |
279 | so = so_next) { | |
f0cbd3ec | 280 | so_next = so->so_next; |
3b46e624 | 281 | |
f0cbd3ec FB |
282 | /* |
283 | * See if we need a tcp_fasttimo | |
284 | */ | |
285 | if (time_fasttimo == 0 && so->so_tcpcb->t_flags & TF_DELACK) | |
286 | time_fasttimo = curtime; /* Flag when we want a fasttimo */ | |
3b46e624 | 287 | |
f0cbd3ec FB |
288 | /* |
289 | * NOFDREF can include still connecting to local-host, | |
290 | * newly socreated() sockets etc. Don't want to select these. | |
291 | */ | |
292 | if (so->so_state & SS_NOFDREF || so->s == -1) | |
293 | continue; | |
3b46e624 | 294 | |
f0cbd3ec FB |
295 | /* |
296 | * Set for reading sockets which are accepting | |
297 | */ | |
298 | if (so->so_state & SS_FACCEPTCONN) { | |
299 | FD_SET(so->s, readfds); | |
300 | UPD_NFDS(so->s); | |
301 | continue; | |
302 | } | |
3b46e624 | 303 | |
f0cbd3ec FB |
304 | /* |
305 | * Set for writing sockets which are connecting | |
306 | */ | |
307 | if (so->so_state & SS_ISFCONNECTING) { | |
308 | FD_SET(so->s, writefds); | |
309 | UPD_NFDS(so->s); | |
310 | continue; | |
311 | } | |
3b46e624 | 312 | |
f0cbd3ec FB |
313 | /* |
314 | * Set for writing if we are connected, can send more, and | |
315 | * we have something to send | |
316 | */ | |
317 | if (CONN_CANFSEND(so) && so->so_rcv.sb_cc) { | |
318 | FD_SET(so->s, writefds); | |
319 | UPD_NFDS(so->s); | |
320 | } | |
3b46e624 | 321 | |
f0cbd3ec FB |
322 | /* |
323 | * Set for reading (and urgent data) if we are connected, can | |
324 | * receive more, and we have room for it XXX /2 ? | |
325 | */ | |
326 | if (CONN_CANFRCV(so) && (so->so_snd.sb_cc < (so->so_snd.sb_datalen/2))) { | |
327 | FD_SET(so->s, readfds); | |
328 | FD_SET(so->s, xfds); | |
329 | UPD_NFDS(so->s); | |
330 | } | |
331 | } | |
3b46e624 | 332 | |
f0cbd3ec FB |
333 | /* |
334 | * UDP sockets | |
335 | */ | |
460fec67 JK |
336 | for (so = slirp->udb.so_next; so != &slirp->udb; |
337 | so = so_next) { | |
f0cbd3ec | 338 | so_next = so->so_next; |
3b46e624 | 339 | |
f0cbd3ec FB |
340 | /* |
341 | * See if it's timed out | |
342 | */ | |
343 | if (so->so_expire) { | |
344 | if (so->so_expire <= curtime) { | |
345 | udp_detach(so); | |
346 | continue; | |
347 | } else | |
348 | do_slowtimo = 1; /* Let socket expire */ | |
349 | } | |
3b46e624 | 350 | |
f0cbd3ec FB |
351 | /* |
352 | * When UDP packets are received from over the | |
353 | * link, they're sendto()'d straight away, so | |
354 | * no need for setting for writing | |
355 | * Limit the number of packets queued by this session | |
356 | * to 4. Note that even though we try and limit this | |
357 | * to 4 packets, the session could have more queued | |
358 | * if the packets needed to be fragmented | |
359 | * (XXX <= 4 ?) | |
360 | */ | |
361 | if ((so->so_state & SS_ISFCONNECTED) && so->so_queued <= 4) { | |
362 | FD_SET(so->s, readfds); | |
363 | UPD_NFDS(so->s); | |
364 | } | |
365 | } | |
b1c99fcd | 366 | } |
5fafdf24 | 367 | |
f0cbd3ec | 368 | *pnfds = nfds; |
5fafdf24 | 369 | } |
f0cbd3ec | 370 | |
d918f23e JK |
371 | void slirp_select_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds, |
372 | int select_error) | |
f0cbd3ec | 373 | { |
b1c99fcd | 374 | Slirp *slirp; |
f0cbd3ec FB |
375 | struct socket *so, *so_next; |
376 | int ret; | |
377 | ||
b1c99fcd | 378 | if (TAILQ_EMPTY(&slirp_instances)) { |
d918f23e JK |
379 | return; |
380 | } | |
381 | ||
f0cbd3ec FB |
382 | global_readfds = readfds; |
383 | global_writefds = writefds; | |
384 | global_xfds = xfds; | |
385 | ||
f833ef21 | 386 | curtime = qemu_get_clock(rt_clock); |
5fafdf24 | 387 | |
b1c99fcd | 388 | TAILQ_FOREACH(slirp, &slirp_instances, entry) { |
f0cbd3ec | 389 | /* |
5fafdf24 | 390 | * See if anything has timed out |
f0cbd3ec | 391 | */ |
df5f8956 | 392 | if (time_fasttimo && ((curtime - time_fasttimo) >= 2)) { |
460fec67 | 393 | tcp_fasttimo(slirp); |
f0cbd3ec FB |
394 | time_fasttimo = 0; |
395 | } | |
396 | if (do_slowtimo && ((curtime - last_slowtimo) >= 499)) { | |
460fec67 JK |
397 | ip_slowtimo(slirp); |
398 | tcp_slowtimo(slirp); | |
f0cbd3ec FB |
399 | last_slowtimo = curtime; |
400 | } | |
5fafdf24 | 401 | |
f0cbd3ec FB |
402 | /* |
403 | * Check sockets | |
404 | */ | |
d918f23e | 405 | if (!select_error) { |
f0cbd3ec FB |
406 | /* |
407 | * Check TCP sockets | |
408 | */ | |
460fec67 JK |
409 | for (so = slirp->tcb.so_next; so != &slirp->tcb; |
410 | so = so_next) { | |
f0cbd3ec | 411 | so_next = so->so_next; |
3b46e624 | 412 | |
f0cbd3ec FB |
413 | /* |
414 | * FD_ISSET is meaningless on these sockets | |
415 | * (and they can crash the program) | |
416 | */ | |
417 | if (so->so_state & SS_NOFDREF || so->s == -1) | |
418 | continue; | |
3b46e624 | 419 | |
f0cbd3ec FB |
420 | /* |
421 | * Check for URG data | |
422 | * This will soread as well, so no need to | |
423 | * test for readfds below if this succeeds | |
424 | */ | |
425 | if (FD_ISSET(so->s, xfds)) | |
426 | sorecvoob(so); | |
427 | /* | |
428 | * Check sockets for reading | |
429 | */ | |
430 | else if (FD_ISSET(so->s, readfds)) { | |
431 | /* | |
432 | * Check for incoming connections | |
433 | */ | |
434 | if (so->so_state & SS_FACCEPTCONN) { | |
435 | tcp_connect(so); | |
436 | continue; | |
437 | } /* else */ | |
438 | ret = soread(so); | |
3b46e624 | 439 | |
f0cbd3ec FB |
440 | /* Output it if we read something */ |
441 | if (ret > 0) | |
442 | tcp_output(sototcpcb(so)); | |
443 | } | |
3b46e624 | 444 | |
f0cbd3ec FB |
445 | /* |
446 | * Check sockets for writing | |
447 | */ | |
448 | if (FD_ISSET(so->s, writefds)) { | |
449 | /* | |
450 | * Check for non-blocking, still-connecting sockets | |
451 | */ | |
452 | if (so->so_state & SS_ISFCONNECTING) { | |
453 | /* Connected */ | |
454 | so->so_state &= ~SS_ISFCONNECTING; | |
3b46e624 | 455 | |
0a656f5f | 456 | ret = send(so->s, (const void *) &ret, 0, 0); |
f0cbd3ec FB |
457 | if (ret < 0) { |
458 | /* XXXXX Must fix, zero bytes is a NOP */ | |
459 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
460 | errno == EINPROGRESS || errno == ENOTCONN) | |
461 | continue; | |
3b46e624 | 462 | |
f0cbd3ec | 463 | /* else failed */ |
f932b6ce JK |
464 | so->so_state &= SS_PERSISTENT_MASK; |
465 | so->so_state |= SS_NOFDREF; | |
f0cbd3ec FB |
466 | } |
467 | /* else so->so_state &= ~SS_ISFCONNECTING; */ | |
3b46e624 | 468 | |
f0cbd3ec FB |
469 | /* |
470 | * Continue tcp_input | |
471 | */ | |
472 | tcp_input((struct mbuf *)NULL, sizeof(struct ip), so); | |
473 | /* continue; */ | |
474 | } else | |
475 | ret = sowrite(so); | |
476 | /* | |
5fafdf24 | 477 | * XXXXX If we wrote something (a lot), there |
f0cbd3ec FB |
478 | * could be a need for a window update. |
479 | * In the worst case, the remote will send | |
480 | * a window probe to get things going again | |
481 | */ | |
482 | } | |
3b46e624 | 483 | |
f0cbd3ec FB |
484 | /* |
485 | * Probe a still-connecting, non-blocking socket | |
486 | * to check if it's still alive | |
487 | */ | |
488 | #ifdef PROBE_CONN | |
489 | if (so->so_state & SS_ISFCONNECTING) { | |
02d2c54c | 490 | ret = recv(so->s, (char *)&ret, 0,0); |
3b46e624 | 491 | |
f0cbd3ec FB |
492 | if (ret < 0) { |
493 | /* XXX */ | |
494 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
495 | errno == EINPROGRESS || errno == ENOTCONN) | |
496 | continue; /* Still connecting, continue */ | |
3b46e624 | 497 | |
f0cbd3ec | 498 | /* else failed */ |
f932b6ce JK |
499 | so->so_state &= SS_PERSISTENT_MASK; |
500 | so->so_state |= SS_NOFDREF; | |
3b46e624 | 501 | |
f0cbd3ec FB |
502 | /* tcp_input will take care of it */ |
503 | } else { | |
02d2c54c | 504 | ret = send(so->s, &ret, 0,0); |
f0cbd3ec FB |
505 | if (ret < 0) { |
506 | /* XXX */ | |
507 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
508 | errno == EINPROGRESS || errno == ENOTCONN) | |
509 | continue; | |
510 | /* else failed */ | |
f932b6ce JK |
511 | so->so_state &= SS_PERSISTENT_MASK; |
512 | so->so_state |= SS_NOFDREF; | |
f0cbd3ec FB |
513 | } else |
514 | so->so_state &= ~SS_ISFCONNECTING; | |
3b46e624 | 515 | |
f0cbd3ec FB |
516 | } |
517 | tcp_input((struct mbuf *)NULL, sizeof(struct ip),so); | |
518 | } /* SS_ISFCONNECTING */ | |
519 | #endif | |
520 | } | |
3b46e624 | 521 | |
f0cbd3ec FB |
522 | /* |
523 | * Now UDP sockets. | |
524 | * Incoming packets are sent straight away, they're not buffered. | |
525 | * Incoming UDP data isn't buffered either. | |
526 | */ | |
460fec67 JK |
527 | for (so = slirp->udb.so_next; so != &slirp->udb; |
528 | so = so_next) { | |
f0cbd3ec | 529 | so_next = so->so_next; |
3b46e624 | 530 | |
f0cbd3ec FB |
531 | if (so->s != -1 && FD_ISSET(so->s, readfds)) { |
532 | sorecvfrom(so); | |
533 | } | |
534 | } | |
535 | } | |
5fafdf24 | 536 | |
f0cbd3ec FB |
537 | /* |
538 | * See if we can start outputting | |
539 | */ | |
460fec67 JK |
540 | if (slirp->if_queued) { |
541 | if_start(slirp); | |
542 | } | |
b1c99fcd | 543 | } |
02d2c54c FB |
544 | |
545 | /* clear global file descriptor sets. | |
546 | * these reside on the stack in vl.c | |
547 | * so they're unusable if we're not in | |
548 | * slirp_select_fill or slirp_select_poll. | |
549 | */ | |
550 | global_readfds = NULL; | |
551 | global_writefds = NULL; | |
552 | global_xfds = NULL; | |
f0cbd3ec FB |
553 | } |
554 | ||
555 | #define ETH_ALEN 6 | |
556 | #define ETH_HLEN 14 | |
557 | ||
558 | #define ETH_P_IP 0x0800 /* Internet Protocol packet */ | |
559 | #define ETH_P_ARP 0x0806 /* Address Resolution packet */ | |
560 | ||
561 | #define ARPOP_REQUEST 1 /* ARP request */ | |
562 | #define ARPOP_REPLY 2 /* ARP reply */ | |
563 | ||
5fafdf24 | 564 | struct ethhdr |
f0cbd3ec FB |
565 | { |
566 | unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ | |
567 | unsigned char h_source[ETH_ALEN]; /* source ether addr */ | |
568 | unsigned short h_proto; /* packet type ID field */ | |
569 | }; | |
570 | ||
571 | struct arphdr | |
572 | { | |
573 | unsigned short ar_hrd; /* format of hardware address */ | |
574 | unsigned short ar_pro; /* format of protocol address */ | |
575 | unsigned char ar_hln; /* length of hardware address */ | |
576 | unsigned char ar_pln; /* length of protocol address */ | |
577 | unsigned short ar_op; /* ARP opcode (command) */ | |
578 | ||
579 | /* | |
580 | * Ethernet looks like this : This bit is variable sized however... | |
581 | */ | |
582 | unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */ | |
a13a4126 | 583 | uint32_t ar_sip; /* sender IP address */ |
f0cbd3ec | 584 | unsigned char ar_tha[ETH_ALEN]; /* target hardware address */ |
a13a4126 JK |
585 | uint32_t ar_tip ; /* target IP address */ |
586 | } __attribute__((packed)); | |
f0cbd3ec | 587 | |
460fec67 | 588 | static void arp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
f0cbd3ec FB |
589 | { |
590 | struct ethhdr *eh = (struct ethhdr *)pkt; | |
591 | struct arphdr *ah = (struct arphdr *)(pkt + ETH_HLEN); | |
592 | uint8_t arp_reply[ETH_HLEN + sizeof(struct arphdr)]; | |
593 | struct ethhdr *reh = (struct ethhdr *)arp_reply; | |
594 | struct arphdr *rah = (struct arphdr *)(arp_reply + ETH_HLEN); | |
595 | int ar_op; | |
a3d4af03 | 596 | struct ex_list *ex_ptr; |
f0cbd3ec FB |
597 | |
598 | ar_op = ntohs(ah->ar_op); | |
599 | switch(ar_op) { | |
600 | case ARPOP_REQUEST: | |
460fec67 JK |
601 | if ((ah->ar_tip & slirp->vnetwork_mask.s_addr) == |
602 | slirp->vnetwork_addr.s_addr) { | |
603 | if (ah->ar_tip == slirp->vnameserver_addr.s_addr || | |
604 | ah->ar_tip == slirp->vhost_addr.s_addr) | |
a3d4af03 | 605 | goto arp_ok; |
460fec67 | 606 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { |
a13a4126 | 607 | if (ex_ptr->ex_addr.s_addr == ah->ar_tip) |
a3d4af03 FB |
608 | goto arp_ok; |
609 | } | |
610 | return; | |
611 | arp_ok: | |
f0cbd3ec | 612 | /* XXX: make an ARP request to have the client address */ |
460fec67 | 613 | memcpy(slirp->client_ethaddr, eh->h_source, ETH_ALEN); |
f0cbd3ec FB |
614 | |
615 | /* ARP request for alias/dns mac address */ | |
616 | memcpy(reh->h_dest, pkt + ETH_ALEN, ETH_ALEN); | |
a13a4126 JK |
617 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); |
618 | memcpy(&reh->h_source[2], &ah->ar_tip, 4); | |
f0cbd3ec FB |
619 | reh->h_proto = htons(ETH_P_ARP); |
620 | ||
621 | rah->ar_hrd = htons(1); | |
622 | rah->ar_pro = htons(ETH_P_IP); | |
623 | rah->ar_hln = ETH_ALEN; | |
624 | rah->ar_pln = 4; | |
625 | rah->ar_op = htons(ARPOP_REPLY); | |
626 | memcpy(rah->ar_sha, reh->h_source, ETH_ALEN); | |
a13a4126 | 627 | rah->ar_sip = ah->ar_tip; |
f0cbd3ec | 628 | memcpy(rah->ar_tha, ah->ar_sha, ETH_ALEN); |
a13a4126 | 629 | rah->ar_tip = ah->ar_sip; |
9f8bd042 | 630 | slirp_output(slirp->opaque, arp_reply, sizeof(arp_reply)); |
f0cbd3ec FB |
631 | } |
632 | break; | |
de806f07 FB |
633 | case ARPOP_REPLY: |
634 | /* reply to request of client mac address ? */ | |
460fec67 JK |
635 | if (!memcmp(slirp->client_ethaddr, zero_ethaddr, ETH_ALEN) && |
636 | ah->ar_sip == slirp->client_ipaddr.s_addr) { | |
637 | memcpy(slirp->client_ethaddr, ah->ar_sha, ETH_ALEN); | |
de806f07 FB |
638 | } |
639 | break; | |
f0cbd3ec FB |
640 | default: |
641 | break; | |
642 | } | |
643 | } | |
644 | ||
9f8bd042 | 645 | void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
f0cbd3ec FB |
646 | { |
647 | struct mbuf *m; | |
648 | int proto; | |
649 | ||
650 | if (pkt_len < ETH_HLEN) | |
651 | return; | |
3b46e624 | 652 | |
f0cbd3ec FB |
653 | proto = ntohs(*(uint16_t *)(pkt + 12)); |
654 | switch(proto) { | |
655 | case ETH_P_ARP: | |
460fec67 | 656 | arp_input(slirp, pkt, pkt_len); |
f0cbd3ec FB |
657 | break; |
658 | case ETH_P_IP: | |
460fec67 | 659 | m = m_get(slirp); |
f0cbd3ec FB |
660 | if (!m) |
661 | return; | |
38f3e7c2 | 662 | /* Note: we add to align the IP header */ |
e8e880a7 AJ |
663 | if (M_FREEROOM(m) < pkt_len + 2) { |
664 | m_inc(m, pkt_len + 2); | |
665 | } | |
38f3e7c2 FB |
666 | m->m_len = pkt_len + 2; |
667 | memcpy(m->m_data + 2, pkt, pkt_len); | |
f0cbd3ec | 668 | |
38f3e7c2 FB |
669 | m->m_data += 2 + ETH_HLEN; |
670 | m->m_len -= 2 + ETH_HLEN; | |
f0cbd3ec FB |
671 | |
672 | ip_input(m); | |
673 | break; | |
674 | default: | |
675 | break; | |
676 | } | |
677 | } | |
678 | ||
679 | /* output the IP packet to the ethernet device */ | |
460fec67 | 680 | void if_encap(Slirp *slirp, const uint8_t *ip_data, int ip_data_len) |
f0cbd3ec FB |
681 | { |
682 | uint8_t buf[1600]; | |
683 | struct ethhdr *eh = (struct ethhdr *)buf; | |
684 | ||
685 | if (ip_data_len + ETH_HLEN > sizeof(buf)) | |
686 | return; | |
de806f07 | 687 | |
460fec67 | 688 | if (!memcmp(slirp->client_ethaddr, zero_ethaddr, ETH_ALEN)) { |
de806f07 FB |
689 | uint8_t arp_req[ETH_HLEN + sizeof(struct arphdr)]; |
690 | struct ethhdr *reh = (struct ethhdr *)arp_req; | |
691 | struct arphdr *rah = (struct arphdr *)(arp_req + ETH_HLEN); | |
692 | const struct ip *iph = (const struct ip *)ip_data; | |
693 | ||
694 | /* If the client addr is not known, there is no point in | |
695 | sending the packet to it. Normally the sender should have | |
696 | done an ARP request to get its MAC address. Here we do it | |
697 | in place of sending the packet and we hope that the sender | |
698 | will retry sending its packet. */ | |
699 | memset(reh->h_dest, 0xff, ETH_ALEN); | |
a13a4126 | 700 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); |
460fec67 | 701 | memcpy(&reh->h_source[2], &slirp->vhost_addr, 4); |
de806f07 FB |
702 | reh->h_proto = htons(ETH_P_ARP); |
703 | rah->ar_hrd = htons(1); | |
704 | rah->ar_pro = htons(ETH_P_IP); | |
705 | rah->ar_hln = ETH_ALEN; | |
706 | rah->ar_pln = 4; | |
707 | rah->ar_op = htons(ARPOP_REQUEST); | |
708 | /* source hw addr */ | |
a13a4126 | 709 | memcpy(rah->ar_sha, special_ethaddr, ETH_ALEN - 4); |
460fec67 | 710 | memcpy(&rah->ar_sha[2], &slirp->vhost_addr, 4); |
de806f07 | 711 | /* source IP */ |
460fec67 | 712 | rah->ar_sip = slirp->vhost_addr.s_addr; |
de806f07 FB |
713 | /* target hw addr (none) */ |
714 | memset(rah->ar_tha, 0, ETH_ALEN); | |
715 | /* target IP */ | |
a13a4126 | 716 | rah->ar_tip = iph->ip_dst.s_addr; |
460fec67 | 717 | slirp->client_ipaddr = iph->ip_dst; |
9f8bd042 | 718 | slirp_output(slirp->opaque, arp_req, sizeof(arp_req)); |
de806f07 | 719 | } else { |
460fec67 | 720 | memcpy(eh->h_dest, slirp->client_ethaddr, ETH_ALEN); |
a13a4126 | 721 | memcpy(eh->h_source, special_ethaddr, ETH_ALEN - 4); |
de806f07 | 722 | /* XXX: not correct */ |
460fec67 | 723 | memcpy(&eh->h_source[2], &slirp->vhost_addr, 4); |
de806f07 FB |
724 | eh->h_proto = htons(ETH_P_IP); |
725 | memcpy(buf + sizeof(struct ethhdr), ip_data, ip_data_len); | |
9f8bd042 | 726 | slirp_output(slirp->opaque, buf, ip_data_len + ETH_HLEN); |
de806f07 | 727 | } |
f0cbd3ec | 728 | } |
9bf05444 | 729 | |
9c12a6f2 | 730 | /* Drop host forwarding rule, return 0 if found. */ |
9f8bd042 JK |
731 | int slirp_remove_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
732 | int host_port) | |
c1261d8d AG |
733 | { |
734 | struct socket *so; | |
460fec67 | 735 | struct socket *head = (is_udp ? &slirp->udb : &slirp->tcb); |
2ad82cf9 JK |
736 | struct sockaddr_in addr; |
737 | int port = htons(host_port); | |
738 | socklen_t addr_len; | |
c1261d8d | 739 | |
c1261d8d | 740 | for (so = head->so_next; so != head; so = so->so_next) { |
2ad82cf9 | 741 | addr_len = sizeof(addr); |
9c12a6f2 JK |
742 | if ((so->so_state & SS_HOSTFWD) && |
743 | getsockname(so->s, (struct sockaddr *)&addr, &addr_len) == 0 && | |
3c6a0580 | 744 | addr.sin_addr.s_addr == host_addr.s_addr && |
2ad82cf9 | 745 | addr.sin_port == port) { |
c1261d8d AG |
746 | close(so->s); |
747 | sofree(so); | |
9c12a6f2 | 748 | return 0; |
c1261d8d AG |
749 | } |
750 | } | |
751 | ||
9c12a6f2 | 752 | return -1; |
c1261d8d AG |
753 | } |
754 | ||
9f8bd042 JK |
755 | int slirp_add_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
756 | int host_port, struct in_addr guest_addr, int guest_port) | |
9bf05444 | 757 | { |
a13a4126 | 758 | if (!guest_addr.s_addr) { |
460fec67 | 759 | guest_addr = slirp->vdhcp_startaddr; |
a13a4126 | 760 | } |
9bf05444 | 761 | if (is_udp) { |
460fec67 JK |
762 | if (!udp_listen(slirp, host_addr.s_addr, htons(host_port), |
763 | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) | |
9bf05444 FB |
764 | return -1; |
765 | } else { | |
460fec67 JK |
766 | if (!tcp_listen(slirp, host_addr.s_addr, htons(host_port), |
767 | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) | |
9bf05444 FB |
768 | return -1; |
769 | } | |
770 | return 0; | |
771 | } | |
a3d4af03 | 772 | |
9f8bd042 | 773 | int slirp_add_exec(Slirp *slirp, int do_pty, const void *args, |
b0dc7873 | 774 | struct in_addr *guest_addr, int guest_port) |
a3d4af03 | 775 | { |
b0dc7873 JK |
776 | if (!guest_addr->s_addr) { |
777 | guest_addr->s_addr = slirp->vnetwork_addr.s_addr | | |
460fec67 | 778 | (htonl(0x0204) & ~slirp->vnetwork_mask.s_addr); |
c92ef6a2 | 779 | } |
b0dc7873 | 780 | if ((guest_addr->s_addr & slirp->vnetwork_mask.s_addr) != |
460fec67 | 781 | slirp->vnetwork_addr.s_addr || |
b0dc7873 JK |
782 | guest_addr->s_addr == slirp->vhost_addr.s_addr || |
783 | guest_addr->s_addr == slirp->vnameserver_addr.s_addr) { | |
a13a4126 JK |
784 | return -1; |
785 | } | |
b0dc7873 | 786 | return add_exec(&slirp->exec_list, do_pty, (char *)args, *guest_addr, |
a13a4126 | 787 | htons(guest_port)); |
a3d4af03 | 788 | } |
e1c5a2b3 AL |
789 | |
790 | ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags) | |
791 | { | |
792 | if (so->s == -1 && so->extra) { | |
793 | qemu_chr_write(so->extra, buf, len); | |
794 | return len; | |
795 | } | |
796 | ||
797 | return send(so->s, buf, len, flags); | |
798 | } | |
799 | ||
a13a4126 | 800 | static struct socket * |
460fec67 | 801 | slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port) |
e1c5a2b3 | 802 | { |
a13a4126 | 803 | struct socket *so; |
e1c5a2b3 | 804 | |
460fec67 | 805 | for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) { |
a13a4126 JK |
806 | if (so->so_faddr.s_addr == guest_addr.s_addr && |
807 | htons(so->so_fport) == guest_port) { | |
808 | return so; | |
809 | } | |
810 | } | |
811 | return NULL; | |
e1c5a2b3 AL |
812 | } |
813 | ||
9f8bd042 JK |
814 | size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr, |
815 | int guest_port) | |
e1c5a2b3 AL |
816 | { |
817 | struct iovec iov[2]; | |
818 | struct socket *so; | |
819 | ||
460fec67 | 820 | so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); |
e1c5a2b3 AL |
821 | |
822 | if (!so || so->so_state & SS_NOFDREF) | |
823 | return 0; | |
824 | ||
825 | if (!CONN_CANFRCV(so) || so->so_snd.sb_cc >= (so->so_snd.sb_datalen/2)) | |
826 | return 0; | |
827 | ||
828 | return sopreprbuf(so, iov, NULL); | |
829 | } | |
830 | ||
9f8bd042 | 831 | void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr, int guest_port, |
c92ef6a2 | 832 | const uint8_t *buf, int size) |
e1c5a2b3 AL |
833 | { |
834 | int ret; | |
460fec67 | 835 | struct socket *so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); |
a13a4126 | 836 | |
e1c5a2b3 AL |
837 | if (!so) |
838 | return; | |
839 | ||
0580ac91 | 840 | ret = soreadbuf(so, (const char *)buf, size); |
e1c5a2b3 AL |
841 | |
842 | if (ret > 0) | |
843 | tcp_output(sototcpcb(so)); | |
844 | } | |
062e5527 AL |
845 | |
846 | static void slirp_tcp_save(QEMUFile *f, struct tcpcb *tp) | |
847 | { | |
848 | int i; | |
849 | ||
850 | qemu_put_sbe16(f, tp->t_state); | |
851 | for (i = 0; i < TCPT_NTIMERS; i++) | |
852 | qemu_put_sbe16(f, tp->t_timer[i]); | |
853 | qemu_put_sbe16(f, tp->t_rxtshift); | |
854 | qemu_put_sbe16(f, tp->t_rxtcur); | |
855 | qemu_put_sbe16(f, tp->t_dupacks); | |
856 | qemu_put_be16(f, tp->t_maxseg); | |
857 | qemu_put_sbyte(f, tp->t_force); | |
858 | qemu_put_be16(f, tp->t_flags); | |
859 | qemu_put_be32(f, tp->snd_una); | |
860 | qemu_put_be32(f, tp->snd_nxt); | |
861 | qemu_put_be32(f, tp->snd_up); | |
862 | qemu_put_be32(f, tp->snd_wl1); | |
863 | qemu_put_be32(f, tp->snd_wl2); | |
864 | qemu_put_be32(f, tp->iss); | |
865 | qemu_put_be32(f, tp->snd_wnd); | |
866 | qemu_put_be32(f, tp->rcv_wnd); | |
867 | qemu_put_be32(f, tp->rcv_nxt); | |
868 | qemu_put_be32(f, tp->rcv_up); | |
869 | qemu_put_be32(f, tp->irs); | |
870 | qemu_put_be32(f, tp->rcv_adv); | |
871 | qemu_put_be32(f, tp->snd_max); | |
872 | qemu_put_be32(f, tp->snd_cwnd); | |
873 | qemu_put_be32(f, tp->snd_ssthresh); | |
874 | qemu_put_sbe16(f, tp->t_idle); | |
875 | qemu_put_sbe16(f, tp->t_rtt); | |
876 | qemu_put_be32(f, tp->t_rtseq); | |
877 | qemu_put_sbe16(f, tp->t_srtt); | |
878 | qemu_put_sbe16(f, tp->t_rttvar); | |
879 | qemu_put_be16(f, tp->t_rttmin); | |
880 | qemu_put_be32(f, tp->max_sndwnd); | |
881 | qemu_put_byte(f, tp->t_oobflags); | |
882 | qemu_put_byte(f, tp->t_iobc); | |
883 | qemu_put_sbe16(f, tp->t_softerror); | |
884 | qemu_put_byte(f, tp->snd_scale); | |
885 | qemu_put_byte(f, tp->rcv_scale); | |
886 | qemu_put_byte(f, tp->request_r_scale); | |
887 | qemu_put_byte(f, tp->requested_s_scale); | |
888 | qemu_put_be32(f, tp->ts_recent); | |
889 | qemu_put_be32(f, tp->ts_recent_age); | |
890 | qemu_put_be32(f, tp->last_ack_sent); | |
891 | } | |
892 | ||
893 | static void slirp_sbuf_save(QEMUFile *f, struct sbuf *sbuf) | |
894 | { | |
895 | uint32_t off; | |
896 | ||
897 | qemu_put_be32(f, sbuf->sb_cc); | |
898 | qemu_put_be32(f, sbuf->sb_datalen); | |
899 | off = (uint32_t)(sbuf->sb_wptr - sbuf->sb_data); | |
900 | qemu_put_sbe32(f, off); | |
901 | off = (uint32_t)(sbuf->sb_rptr - sbuf->sb_data); | |
902 | qemu_put_sbe32(f, off); | |
903 | qemu_put_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); | |
904 | } | |
905 | ||
906 | static void slirp_socket_save(QEMUFile *f, struct socket *so) | |
907 | { | |
908 | qemu_put_be32(f, so->so_urgc); | |
909 | qemu_put_be32(f, so->so_faddr.s_addr); | |
910 | qemu_put_be32(f, so->so_laddr.s_addr); | |
911 | qemu_put_be16(f, so->so_fport); | |
912 | qemu_put_be16(f, so->so_lport); | |
913 | qemu_put_byte(f, so->so_iptos); | |
914 | qemu_put_byte(f, so->so_emu); | |
915 | qemu_put_byte(f, so->so_type); | |
916 | qemu_put_be32(f, so->so_state); | |
917 | slirp_sbuf_save(f, &so->so_rcv); | |
918 | slirp_sbuf_save(f, &so->so_snd); | |
919 | slirp_tcp_save(f, so->so_tcpcb); | |
920 | } | |
921 | ||
0a1f851e JK |
922 | static void slirp_bootp_save(QEMUFile *f, Slirp *slirp) |
923 | { | |
924 | int i; | |
925 | ||
926 | for (i = 0; i < NB_BOOTP_CLIENTS; i++) { | |
927 | qemu_put_be16(f, slirp->bootp_clients[i].allocated); | |
928 | qemu_put_buffer(f, slirp->bootp_clients[i].macaddr, 6); | |
929 | } | |
930 | } | |
931 | ||
062e5527 AL |
932 | static void slirp_state_save(QEMUFile *f, void *opaque) |
933 | { | |
460fec67 | 934 | Slirp *slirp = opaque; |
062e5527 AL |
935 | struct ex_list *ex_ptr; |
936 | ||
460fec67 | 937 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) |
062e5527 AL |
938 | if (ex_ptr->ex_pty == 3) { |
939 | struct socket *so; | |
460fec67 JK |
940 | so = slirp_find_ctl_socket(slirp, ex_ptr->ex_addr, |
941 | ntohs(ex_ptr->ex_fport)); | |
062e5527 AL |
942 | if (!so) |
943 | continue; | |
944 | ||
945 | qemu_put_byte(f, 42); | |
946 | slirp_socket_save(f, so); | |
947 | } | |
948 | qemu_put_byte(f, 0); | |
285f7a62 | 949 | |
460fec67 | 950 | qemu_put_be16(f, slirp->ip_id); |
0a1f851e JK |
951 | |
952 | slirp_bootp_save(f, slirp); | |
062e5527 AL |
953 | } |
954 | ||
955 | static void slirp_tcp_load(QEMUFile *f, struct tcpcb *tp) | |
956 | { | |
957 | int i; | |
958 | ||
959 | tp->t_state = qemu_get_sbe16(f); | |
960 | for (i = 0; i < TCPT_NTIMERS; i++) | |
961 | tp->t_timer[i] = qemu_get_sbe16(f); | |
962 | tp->t_rxtshift = qemu_get_sbe16(f); | |
963 | tp->t_rxtcur = qemu_get_sbe16(f); | |
964 | tp->t_dupacks = qemu_get_sbe16(f); | |
965 | tp->t_maxseg = qemu_get_be16(f); | |
966 | tp->t_force = qemu_get_sbyte(f); | |
967 | tp->t_flags = qemu_get_be16(f); | |
968 | tp->snd_una = qemu_get_be32(f); | |
969 | tp->snd_nxt = qemu_get_be32(f); | |
970 | tp->snd_up = qemu_get_be32(f); | |
971 | tp->snd_wl1 = qemu_get_be32(f); | |
972 | tp->snd_wl2 = qemu_get_be32(f); | |
973 | tp->iss = qemu_get_be32(f); | |
974 | tp->snd_wnd = qemu_get_be32(f); | |
975 | tp->rcv_wnd = qemu_get_be32(f); | |
976 | tp->rcv_nxt = qemu_get_be32(f); | |
977 | tp->rcv_up = qemu_get_be32(f); | |
978 | tp->irs = qemu_get_be32(f); | |
979 | tp->rcv_adv = qemu_get_be32(f); | |
980 | tp->snd_max = qemu_get_be32(f); | |
981 | tp->snd_cwnd = qemu_get_be32(f); | |
982 | tp->snd_ssthresh = qemu_get_be32(f); | |
983 | tp->t_idle = qemu_get_sbe16(f); | |
984 | tp->t_rtt = qemu_get_sbe16(f); | |
985 | tp->t_rtseq = qemu_get_be32(f); | |
986 | tp->t_srtt = qemu_get_sbe16(f); | |
987 | tp->t_rttvar = qemu_get_sbe16(f); | |
988 | tp->t_rttmin = qemu_get_be16(f); | |
989 | tp->max_sndwnd = qemu_get_be32(f); | |
990 | tp->t_oobflags = qemu_get_byte(f); | |
991 | tp->t_iobc = qemu_get_byte(f); | |
992 | tp->t_softerror = qemu_get_sbe16(f); | |
993 | tp->snd_scale = qemu_get_byte(f); | |
994 | tp->rcv_scale = qemu_get_byte(f); | |
995 | tp->request_r_scale = qemu_get_byte(f); | |
996 | tp->requested_s_scale = qemu_get_byte(f); | |
997 | tp->ts_recent = qemu_get_be32(f); | |
998 | tp->ts_recent_age = qemu_get_be32(f); | |
999 | tp->last_ack_sent = qemu_get_be32(f); | |
1000 | tcp_template(tp); | |
1001 | } | |
1002 | ||
1003 | static int slirp_sbuf_load(QEMUFile *f, struct sbuf *sbuf) | |
1004 | { | |
1005 | uint32_t off, sb_cc, sb_datalen; | |
1006 | ||
1007 | sb_cc = qemu_get_be32(f); | |
1008 | sb_datalen = qemu_get_be32(f); | |
1009 | ||
1010 | sbreserve(sbuf, sb_datalen); | |
1011 | ||
1012 | if (sbuf->sb_datalen != sb_datalen) | |
1013 | return -ENOMEM; | |
1014 | ||
1015 | sbuf->sb_cc = sb_cc; | |
1016 | ||
1017 | off = qemu_get_sbe32(f); | |
1018 | sbuf->sb_wptr = sbuf->sb_data + off; | |
1019 | off = qemu_get_sbe32(f); | |
1020 | sbuf->sb_rptr = sbuf->sb_data + off; | |
1021 | qemu_get_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); | |
1022 | ||
1023 | return 0; | |
1024 | } | |
1025 | ||
1026 | static int slirp_socket_load(QEMUFile *f, struct socket *so) | |
1027 | { | |
1028 | if (tcp_attach(so) < 0) | |
1029 | return -ENOMEM; | |
1030 | ||
1031 | so->so_urgc = qemu_get_be32(f); | |
1032 | so->so_faddr.s_addr = qemu_get_be32(f); | |
1033 | so->so_laddr.s_addr = qemu_get_be32(f); | |
1034 | so->so_fport = qemu_get_be16(f); | |
1035 | so->so_lport = qemu_get_be16(f); | |
1036 | so->so_iptos = qemu_get_byte(f); | |
1037 | so->so_emu = qemu_get_byte(f); | |
1038 | so->so_type = qemu_get_byte(f); | |
1039 | so->so_state = qemu_get_be32(f); | |
1040 | if (slirp_sbuf_load(f, &so->so_rcv) < 0) | |
1041 | return -ENOMEM; | |
1042 | if (slirp_sbuf_load(f, &so->so_snd) < 0) | |
1043 | return -ENOMEM; | |
1044 | slirp_tcp_load(f, so->so_tcpcb); | |
1045 | ||
1046 | return 0; | |
1047 | } | |
1048 | ||
0a1f851e JK |
1049 | static void slirp_bootp_load(QEMUFile *f, Slirp *slirp) |
1050 | { | |
1051 | int i; | |
1052 | ||
1053 | for (i = 0; i < NB_BOOTP_CLIENTS; i++) { | |
1054 | slirp->bootp_clients[i].allocated = qemu_get_be16(f); | |
1055 | qemu_get_buffer(f, slirp->bootp_clients[i].macaddr, 6); | |
1056 | } | |
1057 | } | |
1058 | ||
062e5527 AL |
1059 | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id) |
1060 | { | |
460fec67 | 1061 | Slirp *slirp = opaque; |
062e5527 AL |
1062 | struct ex_list *ex_ptr; |
1063 | int r; | |
1064 | ||
1065 | while ((r = qemu_get_byte(f))) { | |
1066 | int ret; | |
460fec67 | 1067 | struct socket *so = socreate(slirp); |
062e5527 AL |
1068 | |
1069 | if (!so) | |
1070 | return -ENOMEM; | |
1071 | ||
1072 | ret = slirp_socket_load(f, so); | |
1073 | ||
1074 | if (ret < 0) | |
1075 | return ret; | |
1076 | ||
460fec67 JK |
1077 | if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) != |
1078 | slirp->vnetwork_addr.s_addr) { | |
062e5527 | 1079 | return -EINVAL; |
a13a4126 | 1080 | } |
460fec67 | 1081 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { |
062e5527 | 1082 | if (ex_ptr->ex_pty == 3 && |
a13a4126 JK |
1083 | so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr && |
1084 | so->so_fport == ex_ptr->ex_fport) { | |
062e5527 | 1085 | break; |
a13a4126 JK |
1086 | } |
1087 | } | |
062e5527 AL |
1088 | if (!ex_ptr) |
1089 | return -EINVAL; | |
1090 | ||
0580ac91 | 1091 | so->extra = (void *)ex_ptr->ex_exec; |
062e5527 AL |
1092 | } |
1093 | ||
285f7a62 | 1094 | if (version_id >= 2) { |
460fec67 | 1095 | slirp->ip_id = qemu_get_be16(f); |
285f7a62 JK |
1096 | } |
1097 | ||
0a1f851e JK |
1098 | if (version_id >= 3) { |
1099 | slirp_bootp_load(f, slirp); | |
1100 | } | |
1101 | ||
062e5527 AL |
1102 | return 0; |
1103 | } |