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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" |
1de7afc9 | 25 | #include "qemu/timer.h" |
927d4878 | 26 | #include "char/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; | |
648cd33e | 32 | /* host loopback network mask */ |
0b8db8fe | 33 | unsigned long loopback_mask; |
f0cbd3ec | 34 | |
a13a4126 | 35 | /* emulated hosts use the MAC addr 52:55:IP:IP:IP:IP */ |
1a0ca1e1 | 36 | static const uint8_t special_ethaddr[ETH_ALEN] = { |
a13a4126 | 37 | 0x52, 0x55, 0x00, 0x00, 0x00, 0x00 |
f0cbd3ec FB |
38 | }; |
39 | ||
1a0ca1e1 | 40 | static const uint8_t zero_ethaddr[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 }; |
f0cbd3ec | 41 | |
f0cbd3ec FB |
42 | /* XXX: suppress those select globals */ |
43 | fd_set *global_readfds, *global_writefds, *global_xfds; | |
44 | ||
f1d99bbd JK |
45 | u_int curtime; |
46 | static u_int time_fasttimo, last_slowtimo; | |
47 | static int do_slowtimo; | |
48 | ||
72cf2d4f BS |
49 | static QTAILQ_HEAD(slirp_instances, Slirp) slirp_instances = |
50 | QTAILQ_HEAD_INITIALIZER(slirp_instances); | |
115defd1 | 51 | |
9e3a95ef SW |
52 | static struct in_addr dns_addr; |
53 | static u_int dns_addr_time; | |
df7a86ed | 54 | |
f0cbd3ec FB |
55 | #ifdef _WIN32 |
56 | ||
df7a86ed | 57 | int get_dns_addr(struct in_addr *pdns_addr) |
f0cbd3ec | 58 | { |
379ff53d FB |
59 | FIXED_INFO *FixedInfo=NULL; |
60 | ULONG BufLen; | |
61 | DWORD ret; | |
62 | IP_ADDR_STRING *pIPAddr; | |
63 | struct in_addr tmp_addr; | |
3b46e624 | 64 | |
df7a86ed ES |
65 | if (dns_addr.s_addr != 0 && (curtime - dns_addr_time) < 1000) { |
66 | *pdns_addr = dns_addr; | |
67 | return 0; | |
68 | } | |
69 | ||
379ff53d FB |
70 | FixedInfo = (FIXED_INFO *)GlobalAlloc(GPTR, sizeof(FIXED_INFO)); |
71 | BufLen = sizeof(FIXED_INFO); | |
3b46e624 | 72 | |
379ff53d FB |
73 | if (ERROR_BUFFER_OVERFLOW == GetNetworkParams(FixedInfo, &BufLen)) { |
74 | if (FixedInfo) { | |
75 | GlobalFree(FixedInfo); | |
76 | FixedInfo = NULL; | |
77 | } | |
78 | FixedInfo = GlobalAlloc(GPTR, BufLen); | |
79 | } | |
5fafdf24 | 80 | |
379ff53d FB |
81 | if ((ret = GetNetworkParams(FixedInfo, &BufLen)) != ERROR_SUCCESS) { |
82 | printf("GetNetworkParams failed. ret = %08x\n", (u_int)ret ); | |
83 | if (FixedInfo) { | |
84 | GlobalFree(FixedInfo); | |
85 | FixedInfo = NULL; | |
86 | } | |
87 | return -1; | |
88 | } | |
3b46e624 | 89 | |
379ff53d FB |
90 | pIPAddr = &(FixedInfo->DnsServerList); |
91 | inet_aton(pIPAddr->IpAddress.String, &tmp_addr); | |
92 | *pdns_addr = tmp_addr; | |
df7a86ed ES |
93 | dns_addr = tmp_addr; |
94 | dns_addr_time = curtime; | |
379ff53d FB |
95 | if (FixedInfo) { |
96 | GlobalFree(FixedInfo); | |
97 | FixedInfo = NULL; | |
98 | } | |
99 | return 0; | |
f0cbd3ec FB |
100 | } |
101 | ||
df461894 JK |
102 | static void winsock_cleanup(void) |
103 | { | |
104 | WSACleanup(); | |
105 | } | |
106 | ||
f0cbd3ec FB |
107 | #else |
108 | ||
1e6eec8b | 109 | static struct stat dns_addr_stat; |
df7a86ed ES |
110 | |
111 | int get_dns_addr(struct in_addr *pdns_addr) | |
f0cbd3ec FB |
112 | { |
113 | char buff[512]; | |
363a37d5 | 114 | char buff2[257]; |
f0cbd3ec FB |
115 | FILE *f; |
116 | int found = 0; | |
117 | struct in_addr tmp_addr; | |
3b46e624 | 118 | |
df7a86ed ES |
119 | if (dns_addr.s_addr != 0) { |
120 | struct stat old_stat; | |
121 | if ((curtime - dns_addr_time) < 1000) { | |
122 | *pdns_addr = dns_addr; | |
123 | return 0; | |
124 | } | |
125 | old_stat = dns_addr_stat; | |
126 | if (stat("/etc/resolv.conf", &dns_addr_stat) != 0) | |
127 | return -1; | |
128 | if ((dns_addr_stat.st_dev == old_stat.st_dev) | |
129 | && (dns_addr_stat.st_ino == old_stat.st_ino) | |
130 | && (dns_addr_stat.st_size == old_stat.st_size) | |
131 | && (dns_addr_stat.st_mtime == old_stat.st_mtime)) { | |
132 | *pdns_addr = dns_addr; | |
133 | return 0; | |
134 | } | |
135 | } | |
136 | ||
f0cbd3ec FB |
137 | f = fopen("/etc/resolv.conf", "r"); |
138 | if (!f) | |
139 | return -1; | |
140 | ||
31a60e22 | 141 | #ifdef DEBUG |
f0cbd3ec | 142 | lprint("IP address of your DNS(s): "); |
31a60e22 | 143 | #endif |
f0cbd3ec FB |
144 | while (fgets(buff, 512, f) != NULL) { |
145 | if (sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1) { | |
146 | if (!inet_aton(buff2, &tmp_addr)) | |
147 | continue; | |
f0cbd3ec | 148 | /* If it's the first one, set it to dns_addr */ |
df7a86ed | 149 | if (!found) { |
f0cbd3ec | 150 | *pdns_addr = tmp_addr; |
df7a86ed ES |
151 | dns_addr = tmp_addr; |
152 | dns_addr_time = curtime; | |
153 | } | |
31a60e22 | 154 | #ifdef DEBUG |
f0cbd3ec FB |
155 | else |
156 | lprint(", "); | |
31a60e22 | 157 | #endif |
f0cbd3ec | 158 | if (++found > 3) { |
31a60e22 | 159 | #ifdef DEBUG |
f0cbd3ec | 160 | lprint("(more)"); |
31a60e22 | 161 | #endif |
f0cbd3ec | 162 | break; |
31a60e22 BS |
163 | } |
164 | #ifdef DEBUG | |
165 | else | |
f0cbd3ec | 166 | lprint("%s", inet_ntoa(tmp_addr)); |
31a60e22 | 167 | #endif |
f0cbd3ec FB |
168 | } |
169 | } | |
1d43a717 | 170 | fclose(f); |
f0cbd3ec FB |
171 | if (!found) |
172 | return -1; | |
173 | return 0; | |
174 | } | |
175 | ||
176 | #endif | |
177 | ||
df461894 | 178 | static void slirp_init_once(void) |
379ff53d | 179 | { |
df461894 | 180 | static int initialized; |
df461894 JK |
181 | #ifdef _WIN32 |
182 | WSADATA Data; | |
379ff53d FB |
183 | #endif |
184 | ||
df461894 JK |
185 | if (initialized) { |
186 | return; | |
187 | } | |
188 | initialized = 1; | |
189 | ||
190 | #ifdef _WIN32 | |
191 | WSAStartup(MAKEWORD(2,0), &Data); | |
192 | atexit(winsock_cleanup); | |
193 | #endif | |
194 | ||
195 | loopback_addr.s_addr = htonl(INADDR_LOOPBACK); | |
648cd33e | 196 | loopback_mask = htonl(IN_CLASSA_NET); |
df461894 JK |
197 | } |
198 | ||
062e5527 AL |
199 | static void slirp_state_save(QEMUFile *f, void *opaque); |
200 | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id); | |
201 | ||
9f8bd042 JK |
202 | Slirp *slirp_init(int restricted, struct in_addr vnetwork, |
203 | struct in_addr vnetmask, struct in_addr vhost, | |
204 | const char *vhostname, const char *tftp_path, | |
205 | const char *bootfile, struct in_addr vdhcp_start, | |
63d2960b KS |
206 | struct in_addr vnameserver, const char **vdnssearch, |
207 | void *opaque) | |
f0cbd3ec | 208 | { |
7267c094 | 209 | Slirp *slirp = g_malloc0(sizeof(Slirp)); |
460fec67 | 210 | |
df461894 | 211 | slirp_init_once(); |
379ff53d | 212 | |
460fec67 | 213 | slirp->restricted = restricted; |
f0cbd3ec | 214 | |
460fec67 JK |
215 | if_init(slirp); |
216 | ip_init(slirp); | |
f0cbd3ec FB |
217 | |
218 | /* Initialise mbufs *after* setting the MTU */ | |
460fec67 | 219 | m_init(slirp); |
f0cbd3ec | 220 | |
460fec67 JK |
221 | slirp->vnetwork_addr = vnetwork; |
222 | slirp->vnetwork_mask = vnetmask; | |
223 | slirp->vhost_addr = vhost; | |
c92ef6a2 | 224 | if (vhostname) { |
460fec67 JK |
225 | pstrcpy(slirp->client_hostname, sizeof(slirp->client_hostname), |
226 | vhostname); | |
a13a4126 | 227 | } |
c64f50d1 MA |
228 | slirp->tftp_prefix = g_strdup(tftp_path); |
229 | slirp->bootp_filename = g_strdup(bootfile); | |
460fec67 JK |
230 | slirp->vdhcp_startaddr = vdhcp_start; |
231 | slirp->vnameserver_addr = vnameserver; | |
ad196a9d | 232 | |
63d2960b KS |
233 | if (vdnssearch) { |
234 | translate_dnssearch(slirp, vdnssearch); | |
235 | } | |
236 | ||
9f8bd042 JK |
237 | slirp->opaque = opaque; |
238 | ||
0be71e32 AW |
239 | register_savevm(NULL, "slirp", 0, 3, |
240 | slirp_state_save, slirp_state_load, slirp); | |
9f8bd042 | 241 | |
72cf2d4f | 242 | QTAILQ_INSERT_TAIL(&slirp_instances, slirp, entry); |
ad0d8c4c | 243 | |
9f8bd042 | 244 | return slirp; |
f0cbd3ec FB |
245 | } |
246 | ||
ad0d8c4c JK |
247 | void slirp_cleanup(Slirp *slirp) |
248 | { | |
72cf2d4f | 249 | QTAILQ_REMOVE(&slirp_instances, slirp, entry); |
b1c99fcd | 250 | |
0be71e32 | 251 | unregister_savevm(NULL, "slirp", slirp); |
ad0d8c4c | 252 | |
a68adc22 JK |
253 | ip_cleanup(slirp); |
254 | m_cleanup(slirp); | |
255 | ||
63d2960b | 256 | g_free(slirp->vdnssearch); |
7267c094 AL |
257 | g_free(slirp->tftp_prefix); |
258 | g_free(slirp->bootp_filename); | |
259 | g_free(slirp); | |
ad0d8c4c JK |
260 | } |
261 | ||
f0cbd3ec FB |
262 | #define CONN_CANFSEND(so) (((so)->so_state & (SS_FCANTSENDMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) |
263 | #define CONN_CANFRCV(so) (((so)->so_state & (SS_FCANTRCVMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) | |
264 | #define UPD_NFDS(x) if (nfds < (x)) nfds = (x) | |
265 | ||
7c7db755 SS |
266 | void slirp_update_timeout(uint32_t *timeout) |
267 | { | |
268 | if (!QTAILQ_EMPTY(&slirp_instances)) { | |
269 | *timeout = MIN(1000, *timeout); | |
270 | } | |
271 | } | |
272 | ||
5fafdf24 | 273 | void slirp_select_fill(int *pnfds, |
f0cbd3ec FB |
274 | fd_set *readfds, fd_set *writefds, fd_set *xfds) |
275 | { | |
b1c99fcd | 276 | Slirp *slirp; |
f0cbd3ec | 277 | struct socket *so, *so_next; |
f0cbd3ec | 278 | int nfds; |
f0cbd3ec | 279 | |
72cf2d4f | 280 | if (QTAILQ_EMPTY(&slirp_instances)) { |
d918f23e JK |
281 | return; |
282 | } | |
283 | ||
f0cbd3ec FB |
284 | /* fail safe */ |
285 | global_readfds = NULL; | |
286 | global_writefds = NULL; | |
287 | global_xfds = NULL; | |
3b46e624 | 288 | |
f0cbd3ec FB |
289 | nfds = *pnfds; |
290 | /* | |
291 | * First, TCP sockets | |
292 | */ | |
293 | do_slowtimo = 0; | |
d918f23e | 294 | |
72cf2d4f | 295 | QTAILQ_FOREACH(slirp, &slirp_instances, entry) { |
5fafdf24 | 296 | /* |
f0cbd3ec FB |
297 | * *_slowtimo needs calling if there are IP fragments |
298 | * in the fragment queue, or there are TCP connections active | |
299 | */ | |
b1c99fcd | 300 | do_slowtimo |= ((slirp->tcb.so_next != &slirp->tcb) || |
460fec67 | 301 | (&slirp->ipq.ip_link != slirp->ipq.ip_link.next)); |
3b46e624 | 302 | |
460fec67 JK |
303 | for (so = slirp->tcb.so_next; so != &slirp->tcb; |
304 | so = so_next) { | |
f0cbd3ec | 305 | so_next = so->so_next; |
3b46e624 | 306 | |
f0cbd3ec FB |
307 | /* |
308 | * See if we need a tcp_fasttimo | |
309 | */ | |
310 | if (time_fasttimo == 0 && so->so_tcpcb->t_flags & TF_DELACK) | |
311 | time_fasttimo = curtime; /* Flag when we want a fasttimo */ | |
3b46e624 | 312 | |
f0cbd3ec FB |
313 | /* |
314 | * NOFDREF can include still connecting to local-host, | |
315 | * newly socreated() sockets etc. Don't want to select these. | |
316 | */ | |
317 | if (so->so_state & SS_NOFDREF || so->s == -1) | |
318 | continue; | |
3b46e624 | 319 | |
f0cbd3ec FB |
320 | /* |
321 | * Set for reading sockets which are accepting | |
322 | */ | |
323 | if (so->so_state & SS_FACCEPTCONN) { | |
324 | FD_SET(so->s, readfds); | |
325 | UPD_NFDS(so->s); | |
326 | continue; | |
327 | } | |
3b46e624 | 328 | |
f0cbd3ec FB |
329 | /* |
330 | * Set for writing sockets which are connecting | |
331 | */ | |
332 | if (so->so_state & SS_ISFCONNECTING) { | |
333 | FD_SET(so->s, writefds); | |
334 | UPD_NFDS(so->s); | |
335 | continue; | |
336 | } | |
3b46e624 | 337 | |
f0cbd3ec FB |
338 | /* |
339 | * Set for writing if we are connected, can send more, and | |
340 | * we have something to send | |
341 | */ | |
342 | if (CONN_CANFSEND(so) && so->so_rcv.sb_cc) { | |
343 | FD_SET(so->s, writefds); | |
344 | UPD_NFDS(so->s); | |
345 | } | |
3b46e624 | 346 | |
f0cbd3ec FB |
347 | /* |
348 | * Set for reading (and urgent data) if we are connected, can | |
349 | * receive more, and we have room for it XXX /2 ? | |
350 | */ | |
351 | if (CONN_CANFRCV(so) && (so->so_snd.sb_cc < (so->so_snd.sb_datalen/2))) { | |
352 | FD_SET(so->s, readfds); | |
353 | FD_SET(so->s, xfds); | |
354 | UPD_NFDS(so->s); | |
355 | } | |
356 | } | |
3b46e624 | 357 | |
f0cbd3ec FB |
358 | /* |
359 | * UDP sockets | |
360 | */ | |
460fec67 JK |
361 | for (so = slirp->udb.so_next; so != &slirp->udb; |
362 | so = so_next) { | |
f0cbd3ec | 363 | so_next = so->so_next; |
3b46e624 | 364 | |
f0cbd3ec FB |
365 | /* |
366 | * See if it's timed out | |
367 | */ | |
368 | if (so->so_expire) { | |
369 | if (so->so_expire <= curtime) { | |
370 | udp_detach(so); | |
371 | continue; | |
372 | } else | |
373 | do_slowtimo = 1; /* Let socket expire */ | |
374 | } | |
3b46e624 | 375 | |
f0cbd3ec FB |
376 | /* |
377 | * When UDP packets are received from over the | |
378 | * link, they're sendto()'d straight away, so | |
379 | * no need for setting for writing | |
380 | * Limit the number of packets queued by this session | |
381 | * to 4. Note that even though we try and limit this | |
382 | * to 4 packets, the session could have more queued | |
383 | * if the packets needed to be fragmented | |
384 | * (XXX <= 4 ?) | |
385 | */ | |
386 | if ((so->so_state & SS_ISFCONNECTED) && so->so_queued <= 4) { | |
387 | FD_SET(so->s, readfds); | |
388 | UPD_NFDS(so->s); | |
389 | } | |
390 | } | |
e6d43cfb JK |
391 | |
392 | /* | |
393 | * ICMP sockets | |
394 | */ | |
395 | for (so = slirp->icmp.so_next; so != &slirp->icmp; | |
396 | so = so_next) { | |
397 | so_next = so->so_next; | |
398 | ||
399 | /* | |
400 | * See if it's timed out | |
401 | */ | |
402 | if (so->so_expire) { | |
403 | if (so->so_expire <= curtime) { | |
404 | icmp_detach(so); | |
405 | continue; | |
406 | } else { | |
407 | do_slowtimo = 1; /* Let socket expire */ | |
408 | } | |
409 | } | |
410 | ||
411 | if (so->so_state & SS_ISFCONNECTED) { | |
412 | FD_SET(so->s, readfds); | |
413 | UPD_NFDS(so->s); | |
414 | } | |
415 | } | |
b1c99fcd | 416 | } |
5fafdf24 | 417 | |
f0cbd3ec | 418 | *pnfds = nfds; |
5fafdf24 | 419 | } |
f0cbd3ec | 420 | |
d918f23e JK |
421 | void slirp_select_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds, |
422 | int select_error) | |
f0cbd3ec | 423 | { |
b1c99fcd | 424 | Slirp *slirp; |
f0cbd3ec FB |
425 | struct socket *so, *so_next; |
426 | int ret; | |
427 | ||
72cf2d4f | 428 | if (QTAILQ_EMPTY(&slirp_instances)) { |
d918f23e JK |
429 | return; |
430 | } | |
431 | ||
f0cbd3ec FB |
432 | global_readfds = readfds; |
433 | global_writefds = writefds; | |
434 | global_xfds = xfds; | |
435 | ||
7bd427d8 | 436 | curtime = qemu_get_clock_ms(rt_clock); |
5fafdf24 | 437 | |
72cf2d4f | 438 | QTAILQ_FOREACH(slirp, &slirp_instances, entry) { |
f0cbd3ec | 439 | /* |
5fafdf24 | 440 | * See if anything has timed out |
f0cbd3ec | 441 | */ |
df5f8956 | 442 | if (time_fasttimo && ((curtime - time_fasttimo) >= 2)) { |
460fec67 | 443 | tcp_fasttimo(slirp); |
f0cbd3ec FB |
444 | time_fasttimo = 0; |
445 | } | |
446 | if (do_slowtimo && ((curtime - last_slowtimo) >= 499)) { | |
460fec67 JK |
447 | ip_slowtimo(slirp); |
448 | tcp_slowtimo(slirp); | |
f0cbd3ec FB |
449 | last_slowtimo = curtime; |
450 | } | |
5fafdf24 | 451 | |
f0cbd3ec FB |
452 | /* |
453 | * Check sockets | |
454 | */ | |
d918f23e | 455 | if (!select_error) { |
f0cbd3ec FB |
456 | /* |
457 | * Check TCP sockets | |
458 | */ | |
460fec67 JK |
459 | for (so = slirp->tcb.so_next; so != &slirp->tcb; |
460 | so = so_next) { | |
f0cbd3ec | 461 | so_next = so->so_next; |
3b46e624 | 462 | |
f0cbd3ec FB |
463 | /* |
464 | * FD_ISSET is meaningless on these sockets | |
465 | * (and they can crash the program) | |
466 | */ | |
467 | if (so->so_state & SS_NOFDREF || so->s == -1) | |
468 | continue; | |
3b46e624 | 469 | |
f0cbd3ec FB |
470 | /* |
471 | * Check for URG data | |
472 | * This will soread as well, so no need to | |
473 | * test for readfds below if this succeeds | |
474 | */ | |
475 | if (FD_ISSET(so->s, xfds)) | |
476 | sorecvoob(so); | |
477 | /* | |
478 | * Check sockets for reading | |
479 | */ | |
480 | else if (FD_ISSET(so->s, readfds)) { | |
481 | /* | |
482 | * Check for incoming connections | |
483 | */ | |
484 | if (so->so_state & SS_FACCEPTCONN) { | |
485 | tcp_connect(so); | |
486 | continue; | |
487 | } /* else */ | |
488 | ret = soread(so); | |
3b46e624 | 489 | |
f0cbd3ec FB |
490 | /* Output it if we read something */ |
491 | if (ret > 0) | |
492 | tcp_output(sototcpcb(so)); | |
493 | } | |
3b46e624 | 494 | |
f0cbd3ec FB |
495 | /* |
496 | * Check sockets for writing | |
497 | */ | |
498 | if (FD_ISSET(so->s, writefds)) { | |
499 | /* | |
500 | * Check for non-blocking, still-connecting sockets | |
501 | */ | |
502 | if (so->so_state & SS_ISFCONNECTING) { | |
503 | /* Connected */ | |
504 | so->so_state &= ~SS_ISFCONNECTING; | |
3b46e624 | 505 | |
0a656f5f | 506 | ret = send(so->s, (const void *) &ret, 0, 0); |
f0cbd3ec FB |
507 | if (ret < 0) { |
508 | /* XXXXX Must fix, zero bytes is a NOP */ | |
509 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
510 | errno == EINPROGRESS || errno == ENOTCONN) | |
511 | continue; | |
3b46e624 | 512 | |
f0cbd3ec | 513 | /* else failed */ |
f932b6ce JK |
514 | so->so_state &= SS_PERSISTENT_MASK; |
515 | so->so_state |= SS_NOFDREF; | |
f0cbd3ec FB |
516 | } |
517 | /* else so->so_state &= ~SS_ISFCONNECTING; */ | |
3b46e624 | 518 | |
f0cbd3ec FB |
519 | /* |
520 | * Continue tcp_input | |
521 | */ | |
522 | tcp_input((struct mbuf *)NULL, sizeof(struct ip), so); | |
523 | /* continue; */ | |
524 | } else | |
525 | ret = sowrite(so); | |
526 | /* | |
5fafdf24 | 527 | * XXXXX If we wrote something (a lot), there |
f0cbd3ec FB |
528 | * could be a need for a window update. |
529 | * In the worst case, the remote will send | |
530 | * a window probe to get things going again | |
531 | */ | |
532 | } | |
3b46e624 | 533 | |
f0cbd3ec FB |
534 | /* |
535 | * Probe a still-connecting, non-blocking socket | |
536 | * to check if it's still alive | |
537 | */ | |
538 | #ifdef PROBE_CONN | |
539 | if (so->so_state & SS_ISFCONNECTING) { | |
00aa0040 | 540 | ret = qemu_recv(so->s, &ret, 0,0); |
3b46e624 | 541 | |
f0cbd3ec FB |
542 | if (ret < 0) { |
543 | /* XXX */ | |
544 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
545 | errno == EINPROGRESS || errno == ENOTCONN) | |
546 | continue; /* Still connecting, continue */ | |
3b46e624 | 547 | |
f0cbd3ec | 548 | /* else failed */ |
f932b6ce JK |
549 | so->so_state &= SS_PERSISTENT_MASK; |
550 | so->so_state |= SS_NOFDREF; | |
3b46e624 | 551 | |
f0cbd3ec FB |
552 | /* tcp_input will take care of it */ |
553 | } else { | |
02d2c54c | 554 | ret = send(so->s, &ret, 0,0); |
f0cbd3ec FB |
555 | if (ret < 0) { |
556 | /* XXX */ | |
557 | if (errno == EAGAIN || errno == EWOULDBLOCK || | |
558 | errno == EINPROGRESS || errno == ENOTCONN) | |
559 | continue; | |
560 | /* else failed */ | |
f932b6ce JK |
561 | so->so_state &= SS_PERSISTENT_MASK; |
562 | so->so_state |= SS_NOFDREF; | |
f0cbd3ec FB |
563 | } else |
564 | so->so_state &= ~SS_ISFCONNECTING; | |
3b46e624 | 565 | |
f0cbd3ec FB |
566 | } |
567 | tcp_input((struct mbuf *)NULL, sizeof(struct ip),so); | |
568 | } /* SS_ISFCONNECTING */ | |
569 | #endif | |
570 | } | |
3b46e624 | 571 | |
f0cbd3ec FB |
572 | /* |
573 | * Now UDP sockets. | |
574 | * Incoming packets are sent straight away, they're not buffered. | |
575 | * Incoming UDP data isn't buffered either. | |
576 | */ | |
460fec67 JK |
577 | for (so = slirp->udb.so_next; so != &slirp->udb; |
578 | so = so_next) { | |
f0cbd3ec | 579 | so_next = so->so_next; |
3b46e624 | 580 | |
f0cbd3ec FB |
581 | if (so->s != -1 && FD_ISSET(so->s, readfds)) { |
582 | sorecvfrom(so); | |
583 | } | |
584 | } | |
e6d43cfb JK |
585 | |
586 | /* | |
587 | * Check incoming ICMP relies. | |
588 | */ | |
589 | for (so = slirp->icmp.so_next; so != &slirp->icmp; | |
590 | so = so_next) { | |
591 | so_next = so->so_next; | |
592 | ||
593 | if (so->s != -1 && FD_ISSET(so->s, readfds)) { | |
594 | icmp_receive(so); | |
595 | } | |
596 | } | |
f0cbd3ec | 597 | } |
5fafdf24 | 598 | |
f3734319 | 599 | if_start(slirp); |
b1c99fcd | 600 | } |
02d2c54c FB |
601 | |
602 | /* clear global file descriptor sets. | |
603 | * these reside on the stack in vl.c | |
604 | * so they're unusable if we're not in | |
605 | * slirp_select_fill or slirp_select_poll. | |
606 | */ | |
607 | global_readfds = NULL; | |
608 | global_writefds = NULL; | |
609 | global_xfds = NULL; | |
f0cbd3ec FB |
610 | } |
611 | ||
460fec67 | 612 | static void arp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
f0cbd3ec | 613 | { |
f0cbd3ec | 614 | struct arphdr *ah = (struct arphdr *)(pkt + ETH_HLEN); |
dbf3c4b4 | 615 | uint8_t arp_reply[max(ETH_HLEN + sizeof(struct arphdr), 64)]; |
f0cbd3ec FB |
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: | |
1a0ca1e1 FC |
624 | if (ah->ar_tip == ah->ar_sip) { |
625 | /* Gratuitous ARP */ | |
626 | arp_table_add(slirp, ah->ar_sip, ah->ar_sha); | |
627 | return; | |
628 | } | |
629 | ||
460fec67 JK |
630 | if ((ah->ar_tip & slirp->vnetwork_mask.s_addr) == |
631 | slirp->vnetwork_addr.s_addr) { | |
632 | if (ah->ar_tip == slirp->vnameserver_addr.s_addr || | |
633 | ah->ar_tip == slirp->vhost_addr.s_addr) | |
a3d4af03 | 634 | goto arp_ok; |
460fec67 | 635 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { |
a13a4126 | 636 | if (ex_ptr->ex_addr.s_addr == ah->ar_tip) |
a3d4af03 FB |
637 | goto arp_ok; |
638 | } | |
639 | return; | |
640 | arp_ok: | |
dbf3c4b4 | 641 | memset(arp_reply, 0, sizeof(arp_reply)); |
1a0ca1e1 FC |
642 | |
643 | arp_table_add(slirp, ah->ar_sip, ah->ar_sha); | |
f0cbd3ec FB |
644 | |
645 | /* ARP request for alias/dns mac address */ | |
646 | memcpy(reh->h_dest, pkt + ETH_ALEN, ETH_ALEN); | |
a13a4126 JK |
647 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); |
648 | memcpy(&reh->h_source[2], &ah->ar_tip, 4); | |
f0cbd3ec FB |
649 | reh->h_proto = htons(ETH_P_ARP); |
650 | ||
651 | rah->ar_hrd = htons(1); | |
652 | rah->ar_pro = htons(ETH_P_IP); | |
653 | rah->ar_hln = ETH_ALEN; | |
654 | rah->ar_pln = 4; | |
655 | rah->ar_op = htons(ARPOP_REPLY); | |
656 | memcpy(rah->ar_sha, reh->h_source, ETH_ALEN); | |
a13a4126 | 657 | rah->ar_sip = ah->ar_tip; |
f0cbd3ec | 658 | memcpy(rah->ar_tha, ah->ar_sha, ETH_ALEN); |
a13a4126 | 659 | rah->ar_tip = ah->ar_sip; |
9f8bd042 | 660 | slirp_output(slirp->opaque, arp_reply, sizeof(arp_reply)); |
f0cbd3ec FB |
661 | } |
662 | break; | |
de806f07 | 663 | case ARPOP_REPLY: |
1a0ca1e1 | 664 | arp_table_add(slirp, ah->ar_sip, ah->ar_sha); |
de806f07 | 665 | break; |
f0cbd3ec FB |
666 | default: |
667 | break; | |
668 | } | |
669 | } | |
670 | ||
9f8bd042 | 671 | void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
f0cbd3ec FB |
672 | { |
673 | struct mbuf *m; | |
674 | int proto; | |
675 | ||
676 | if (pkt_len < ETH_HLEN) | |
677 | return; | |
3b46e624 | 678 | |
f0cbd3ec FB |
679 | proto = ntohs(*(uint16_t *)(pkt + 12)); |
680 | switch(proto) { | |
681 | case ETH_P_ARP: | |
460fec67 | 682 | arp_input(slirp, pkt, pkt_len); |
f0cbd3ec FB |
683 | break; |
684 | case ETH_P_IP: | |
460fec67 | 685 | m = m_get(slirp); |
f0cbd3ec FB |
686 | if (!m) |
687 | return; | |
38f3e7c2 | 688 | /* Note: we add to align the IP header */ |
e8e880a7 AJ |
689 | if (M_FREEROOM(m) < pkt_len + 2) { |
690 | m_inc(m, pkt_len + 2); | |
691 | } | |
38f3e7c2 FB |
692 | m->m_len = pkt_len + 2; |
693 | memcpy(m->m_data + 2, pkt, pkt_len); | |
f0cbd3ec | 694 | |
38f3e7c2 FB |
695 | m->m_data += 2 + ETH_HLEN; |
696 | m->m_len -= 2 + ETH_HLEN; | |
f0cbd3ec FB |
697 | |
698 | ip_input(m); | |
699 | break; | |
700 | default: | |
701 | break; | |
702 | } | |
703 | } | |
704 | ||
1ab74cea FC |
705 | /* Output the IP packet to the ethernet device. Returns 0 if the packet must be |
706 | * re-queued. | |
707 | */ | |
708 | int if_encap(Slirp *slirp, struct mbuf *ifm) | |
f0cbd3ec FB |
709 | { |
710 | uint8_t buf[1600]; | |
711 | struct ethhdr *eh = (struct ethhdr *)buf; | |
1a0ca1e1 | 712 | uint8_t ethaddr[ETH_ALEN]; |
1ab74cea | 713 | const struct ip *iph = (const struct ip *)ifm->m_data; |
f0cbd3ec | 714 | |
1ab74cea FC |
715 | if (ifm->m_len + ETH_HLEN > sizeof(buf)) { |
716 | return 1; | |
717 | } | |
1a0ca1e1 FC |
718 | |
719 | if (!arp_table_search(slirp, iph->ip_dst.s_addr, ethaddr)) { | |
de806f07 FB |
720 | uint8_t arp_req[ETH_HLEN + sizeof(struct arphdr)]; |
721 | struct ethhdr *reh = (struct ethhdr *)arp_req; | |
722 | struct arphdr *rah = (struct arphdr *)(arp_req + ETH_HLEN); | |
de806f07 | 723 | |
1ab74cea FC |
724 | if (!ifm->arp_requested) { |
725 | /* If the client addr is not known, send an ARP request */ | |
726 | memset(reh->h_dest, 0xff, ETH_ALEN); | |
727 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); | |
728 | memcpy(&reh->h_source[2], &slirp->vhost_addr, 4); | |
729 | reh->h_proto = htons(ETH_P_ARP); | |
730 | rah->ar_hrd = htons(1); | |
731 | rah->ar_pro = htons(ETH_P_IP); | |
732 | rah->ar_hln = ETH_ALEN; | |
733 | rah->ar_pln = 4; | |
734 | rah->ar_op = htons(ARPOP_REQUEST); | |
735 | ||
736 | /* source hw addr */ | |
737 | memcpy(rah->ar_sha, special_ethaddr, ETH_ALEN - 4); | |
738 | memcpy(&rah->ar_sha[2], &slirp->vhost_addr, 4); | |
739 | ||
740 | /* source IP */ | |
741 | rah->ar_sip = slirp->vhost_addr.s_addr; | |
742 | ||
743 | /* target hw addr (none) */ | |
744 | memset(rah->ar_tha, 0, ETH_ALEN); | |
745 | ||
746 | /* target IP */ | |
747 | rah->ar_tip = iph->ip_dst.s_addr; | |
748 | slirp->client_ipaddr = iph->ip_dst; | |
749 | slirp_output(slirp->opaque, arp_req, sizeof(arp_req)); | |
750 | ifm->arp_requested = true; | |
e3a110b5 JK |
751 | |
752 | /* Expire request and drop outgoing packet after 1 second */ | |
753 | ifm->expiration_date = qemu_get_clock_ns(rt_clock) + 1000000000ULL; | |
1ab74cea FC |
754 | } |
755 | return 0; | |
de806f07 | 756 | } else { |
1a0ca1e1 | 757 | memcpy(eh->h_dest, ethaddr, ETH_ALEN); |
a13a4126 | 758 | memcpy(eh->h_source, special_ethaddr, ETH_ALEN - 4); |
de806f07 | 759 | /* XXX: not correct */ |
460fec67 | 760 | memcpy(&eh->h_source[2], &slirp->vhost_addr, 4); |
de806f07 | 761 | eh->h_proto = htons(ETH_P_IP); |
1ab74cea FC |
762 | memcpy(buf + sizeof(struct ethhdr), ifm->m_data, ifm->m_len); |
763 | slirp_output(slirp->opaque, buf, ifm->m_len + ETH_HLEN); | |
764 | return 1; | |
de806f07 | 765 | } |
f0cbd3ec | 766 | } |
9bf05444 | 767 | |
9c12a6f2 | 768 | /* Drop host forwarding rule, return 0 if found. */ |
9f8bd042 JK |
769 | int slirp_remove_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
770 | int host_port) | |
c1261d8d AG |
771 | { |
772 | struct socket *so; | |
460fec67 | 773 | struct socket *head = (is_udp ? &slirp->udb : &slirp->tcb); |
2ad82cf9 JK |
774 | struct sockaddr_in addr; |
775 | int port = htons(host_port); | |
776 | socklen_t addr_len; | |
c1261d8d | 777 | |
c1261d8d | 778 | for (so = head->so_next; so != head; so = so->so_next) { |
2ad82cf9 | 779 | addr_len = sizeof(addr); |
9c12a6f2 JK |
780 | if ((so->so_state & SS_HOSTFWD) && |
781 | getsockname(so->s, (struct sockaddr *)&addr, &addr_len) == 0 && | |
3c6a0580 | 782 | addr.sin_addr.s_addr == host_addr.s_addr && |
2ad82cf9 | 783 | addr.sin_port == port) { |
c1261d8d AG |
784 | close(so->s); |
785 | sofree(so); | |
9c12a6f2 | 786 | return 0; |
c1261d8d AG |
787 | } |
788 | } | |
789 | ||
9c12a6f2 | 790 | return -1; |
c1261d8d AG |
791 | } |
792 | ||
9f8bd042 JK |
793 | int slirp_add_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
794 | int host_port, struct in_addr guest_addr, int guest_port) | |
9bf05444 | 795 | { |
a13a4126 | 796 | if (!guest_addr.s_addr) { |
460fec67 | 797 | guest_addr = slirp->vdhcp_startaddr; |
a13a4126 | 798 | } |
9bf05444 | 799 | if (is_udp) { |
460fec67 JK |
800 | if (!udp_listen(slirp, host_addr.s_addr, htons(host_port), |
801 | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) | |
9bf05444 FB |
802 | return -1; |
803 | } else { | |
460fec67 JK |
804 | if (!tcp_listen(slirp, host_addr.s_addr, htons(host_port), |
805 | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) | |
9bf05444 FB |
806 | return -1; |
807 | } | |
808 | return 0; | |
809 | } | |
a3d4af03 | 810 | |
9f8bd042 | 811 | int slirp_add_exec(Slirp *slirp, int do_pty, const void *args, |
bb53fc53 | 812 | struct in_addr *guest_addr, int guest_port) |
a3d4af03 | 813 | { |
bb53fc53 JK |
814 | if (!guest_addr->s_addr) { |
815 | guest_addr->s_addr = slirp->vnetwork_addr.s_addr | | |
460fec67 | 816 | (htonl(0x0204) & ~slirp->vnetwork_mask.s_addr); |
c92ef6a2 | 817 | } |
bb53fc53 | 818 | if ((guest_addr->s_addr & slirp->vnetwork_mask.s_addr) != |
460fec67 | 819 | slirp->vnetwork_addr.s_addr || |
bb53fc53 JK |
820 | guest_addr->s_addr == slirp->vhost_addr.s_addr || |
821 | guest_addr->s_addr == slirp->vnameserver_addr.s_addr) { | |
a13a4126 JK |
822 | return -1; |
823 | } | |
bb53fc53 | 824 | return add_exec(&slirp->exec_list, do_pty, (char *)args, *guest_addr, |
a13a4126 | 825 | htons(guest_port)); |
a3d4af03 | 826 | } |
e1c5a2b3 AL |
827 | |
828 | ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags) | |
829 | { | |
830 | if (so->s == -1 && so->extra) { | |
2cc6e0a1 | 831 | qemu_chr_fe_write(so->extra, buf, len); |
e1c5a2b3 AL |
832 | return len; |
833 | } | |
834 | ||
835 | return send(so->s, buf, len, flags); | |
836 | } | |
837 | ||
a13a4126 | 838 | static struct socket * |
460fec67 | 839 | slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port) |
e1c5a2b3 | 840 | { |
a13a4126 | 841 | struct socket *so; |
e1c5a2b3 | 842 | |
460fec67 | 843 | for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) { |
a13a4126 JK |
844 | if (so->so_faddr.s_addr == guest_addr.s_addr && |
845 | htons(so->so_fport) == guest_port) { | |
846 | return so; | |
847 | } | |
848 | } | |
849 | return NULL; | |
e1c5a2b3 AL |
850 | } |
851 | ||
9f8bd042 JK |
852 | size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr, |
853 | int guest_port) | |
e1c5a2b3 AL |
854 | { |
855 | struct iovec iov[2]; | |
856 | struct socket *so; | |
857 | ||
460fec67 | 858 | so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); |
e1c5a2b3 AL |
859 | |
860 | if (!so || so->so_state & SS_NOFDREF) | |
861 | return 0; | |
862 | ||
863 | if (!CONN_CANFRCV(so) || so->so_snd.sb_cc >= (so->so_snd.sb_datalen/2)) | |
864 | return 0; | |
865 | ||
866 | return sopreprbuf(so, iov, NULL); | |
867 | } | |
868 | ||
9f8bd042 | 869 | void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr, int guest_port, |
c92ef6a2 | 870 | const uint8_t *buf, int size) |
e1c5a2b3 AL |
871 | { |
872 | int ret; | |
460fec67 | 873 | struct socket *so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); |
a13a4126 | 874 | |
e1c5a2b3 AL |
875 | if (!so) |
876 | return; | |
877 | ||
0580ac91 | 878 | ret = soreadbuf(so, (const char *)buf, size); |
e1c5a2b3 AL |
879 | |
880 | if (ret > 0) | |
881 | tcp_output(sototcpcb(so)); | |
882 | } | |
062e5527 AL |
883 | |
884 | static void slirp_tcp_save(QEMUFile *f, struct tcpcb *tp) | |
885 | { | |
886 | int i; | |
887 | ||
888 | qemu_put_sbe16(f, tp->t_state); | |
889 | for (i = 0; i < TCPT_NTIMERS; i++) | |
890 | qemu_put_sbe16(f, tp->t_timer[i]); | |
891 | qemu_put_sbe16(f, tp->t_rxtshift); | |
892 | qemu_put_sbe16(f, tp->t_rxtcur); | |
893 | qemu_put_sbe16(f, tp->t_dupacks); | |
894 | qemu_put_be16(f, tp->t_maxseg); | |
895 | qemu_put_sbyte(f, tp->t_force); | |
896 | qemu_put_be16(f, tp->t_flags); | |
897 | qemu_put_be32(f, tp->snd_una); | |
898 | qemu_put_be32(f, tp->snd_nxt); | |
899 | qemu_put_be32(f, tp->snd_up); | |
900 | qemu_put_be32(f, tp->snd_wl1); | |
901 | qemu_put_be32(f, tp->snd_wl2); | |
902 | qemu_put_be32(f, tp->iss); | |
903 | qemu_put_be32(f, tp->snd_wnd); | |
904 | qemu_put_be32(f, tp->rcv_wnd); | |
905 | qemu_put_be32(f, tp->rcv_nxt); | |
906 | qemu_put_be32(f, tp->rcv_up); | |
907 | qemu_put_be32(f, tp->irs); | |
908 | qemu_put_be32(f, tp->rcv_adv); | |
909 | qemu_put_be32(f, tp->snd_max); | |
910 | qemu_put_be32(f, tp->snd_cwnd); | |
911 | qemu_put_be32(f, tp->snd_ssthresh); | |
912 | qemu_put_sbe16(f, tp->t_idle); | |
913 | qemu_put_sbe16(f, tp->t_rtt); | |
914 | qemu_put_be32(f, tp->t_rtseq); | |
915 | qemu_put_sbe16(f, tp->t_srtt); | |
916 | qemu_put_sbe16(f, tp->t_rttvar); | |
917 | qemu_put_be16(f, tp->t_rttmin); | |
918 | qemu_put_be32(f, tp->max_sndwnd); | |
919 | qemu_put_byte(f, tp->t_oobflags); | |
920 | qemu_put_byte(f, tp->t_iobc); | |
921 | qemu_put_sbe16(f, tp->t_softerror); | |
922 | qemu_put_byte(f, tp->snd_scale); | |
923 | qemu_put_byte(f, tp->rcv_scale); | |
924 | qemu_put_byte(f, tp->request_r_scale); | |
925 | qemu_put_byte(f, tp->requested_s_scale); | |
926 | qemu_put_be32(f, tp->ts_recent); | |
927 | qemu_put_be32(f, tp->ts_recent_age); | |
928 | qemu_put_be32(f, tp->last_ack_sent); | |
929 | } | |
930 | ||
931 | static void slirp_sbuf_save(QEMUFile *f, struct sbuf *sbuf) | |
932 | { | |
933 | uint32_t off; | |
934 | ||
935 | qemu_put_be32(f, sbuf->sb_cc); | |
936 | qemu_put_be32(f, sbuf->sb_datalen); | |
937 | off = (uint32_t)(sbuf->sb_wptr - sbuf->sb_data); | |
938 | qemu_put_sbe32(f, off); | |
939 | off = (uint32_t)(sbuf->sb_rptr - sbuf->sb_data); | |
940 | qemu_put_sbe32(f, off); | |
941 | qemu_put_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); | |
942 | } | |
943 | ||
944 | static void slirp_socket_save(QEMUFile *f, struct socket *so) | |
945 | { | |
946 | qemu_put_be32(f, so->so_urgc); | |
947 | qemu_put_be32(f, so->so_faddr.s_addr); | |
948 | qemu_put_be32(f, so->so_laddr.s_addr); | |
949 | qemu_put_be16(f, so->so_fport); | |
950 | qemu_put_be16(f, so->so_lport); | |
951 | qemu_put_byte(f, so->so_iptos); | |
952 | qemu_put_byte(f, so->so_emu); | |
953 | qemu_put_byte(f, so->so_type); | |
954 | qemu_put_be32(f, so->so_state); | |
955 | slirp_sbuf_save(f, &so->so_rcv); | |
956 | slirp_sbuf_save(f, &so->so_snd); | |
957 | slirp_tcp_save(f, so->so_tcpcb); | |
958 | } | |
959 | ||
0a1f851e JK |
960 | static void slirp_bootp_save(QEMUFile *f, Slirp *slirp) |
961 | { | |
962 | int i; | |
963 | ||
964 | for (i = 0; i < NB_BOOTP_CLIENTS; i++) { | |
965 | qemu_put_be16(f, slirp->bootp_clients[i].allocated); | |
966 | qemu_put_buffer(f, slirp->bootp_clients[i].macaddr, 6); | |
967 | } | |
968 | } | |
969 | ||
062e5527 AL |
970 | static void slirp_state_save(QEMUFile *f, void *opaque) |
971 | { | |
460fec67 | 972 | Slirp *slirp = opaque; |
062e5527 AL |
973 | struct ex_list *ex_ptr; |
974 | ||
460fec67 | 975 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) |
062e5527 AL |
976 | if (ex_ptr->ex_pty == 3) { |
977 | struct socket *so; | |
460fec67 JK |
978 | so = slirp_find_ctl_socket(slirp, ex_ptr->ex_addr, |
979 | ntohs(ex_ptr->ex_fport)); | |
062e5527 AL |
980 | if (!so) |
981 | continue; | |
982 | ||
983 | qemu_put_byte(f, 42); | |
984 | slirp_socket_save(f, so); | |
985 | } | |
986 | qemu_put_byte(f, 0); | |
285f7a62 | 987 | |
460fec67 | 988 | qemu_put_be16(f, slirp->ip_id); |
0a1f851e JK |
989 | |
990 | slirp_bootp_save(f, slirp); | |
062e5527 AL |
991 | } |
992 | ||
993 | static void slirp_tcp_load(QEMUFile *f, struct tcpcb *tp) | |
994 | { | |
995 | int i; | |
996 | ||
997 | tp->t_state = qemu_get_sbe16(f); | |
998 | for (i = 0; i < TCPT_NTIMERS; i++) | |
999 | tp->t_timer[i] = qemu_get_sbe16(f); | |
1000 | tp->t_rxtshift = qemu_get_sbe16(f); | |
1001 | tp->t_rxtcur = qemu_get_sbe16(f); | |
1002 | tp->t_dupacks = qemu_get_sbe16(f); | |
1003 | tp->t_maxseg = qemu_get_be16(f); | |
1004 | tp->t_force = qemu_get_sbyte(f); | |
1005 | tp->t_flags = qemu_get_be16(f); | |
1006 | tp->snd_una = qemu_get_be32(f); | |
1007 | tp->snd_nxt = qemu_get_be32(f); | |
1008 | tp->snd_up = qemu_get_be32(f); | |
1009 | tp->snd_wl1 = qemu_get_be32(f); | |
1010 | tp->snd_wl2 = qemu_get_be32(f); | |
1011 | tp->iss = qemu_get_be32(f); | |
1012 | tp->snd_wnd = qemu_get_be32(f); | |
1013 | tp->rcv_wnd = qemu_get_be32(f); | |
1014 | tp->rcv_nxt = qemu_get_be32(f); | |
1015 | tp->rcv_up = qemu_get_be32(f); | |
1016 | tp->irs = qemu_get_be32(f); | |
1017 | tp->rcv_adv = qemu_get_be32(f); | |
1018 | tp->snd_max = qemu_get_be32(f); | |
1019 | tp->snd_cwnd = qemu_get_be32(f); | |
1020 | tp->snd_ssthresh = qemu_get_be32(f); | |
1021 | tp->t_idle = qemu_get_sbe16(f); | |
1022 | tp->t_rtt = qemu_get_sbe16(f); | |
1023 | tp->t_rtseq = qemu_get_be32(f); | |
1024 | tp->t_srtt = qemu_get_sbe16(f); | |
1025 | tp->t_rttvar = qemu_get_sbe16(f); | |
1026 | tp->t_rttmin = qemu_get_be16(f); | |
1027 | tp->max_sndwnd = qemu_get_be32(f); | |
1028 | tp->t_oobflags = qemu_get_byte(f); | |
1029 | tp->t_iobc = qemu_get_byte(f); | |
1030 | tp->t_softerror = qemu_get_sbe16(f); | |
1031 | tp->snd_scale = qemu_get_byte(f); | |
1032 | tp->rcv_scale = qemu_get_byte(f); | |
1033 | tp->request_r_scale = qemu_get_byte(f); | |
1034 | tp->requested_s_scale = qemu_get_byte(f); | |
1035 | tp->ts_recent = qemu_get_be32(f); | |
1036 | tp->ts_recent_age = qemu_get_be32(f); | |
1037 | tp->last_ack_sent = qemu_get_be32(f); | |
1038 | tcp_template(tp); | |
1039 | } | |
1040 | ||
1041 | static int slirp_sbuf_load(QEMUFile *f, struct sbuf *sbuf) | |
1042 | { | |
1043 | uint32_t off, sb_cc, sb_datalen; | |
1044 | ||
1045 | sb_cc = qemu_get_be32(f); | |
1046 | sb_datalen = qemu_get_be32(f); | |
1047 | ||
1048 | sbreserve(sbuf, sb_datalen); | |
1049 | ||
1050 | if (sbuf->sb_datalen != sb_datalen) | |
1051 | return -ENOMEM; | |
1052 | ||
1053 | sbuf->sb_cc = sb_cc; | |
1054 | ||
1055 | off = qemu_get_sbe32(f); | |
1056 | sbuf->sb_wptr = sbuf->sb_data + off; | |
1057 | off = qemu_get_sbe32(f); | |
1058 | sbuf->sb_rptr = sbuf->sb_data + off; | |
1059 | qemu_get_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); | |
1060 | ||
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | static int slirp_socket_load(QEMUFile *f, struct socket *so) | |
1065 | { | |
1066 | if (tcp_attach(so) < 0) | |
1067 | return -ENOMEM; | |
1068 | ||
1069 | so->so_urgc = qemu_get_be32(f); | |
1070 | so->so_faddr.s_addr = qemu_get_be32(f); | |
1071 | so->so_laddr.s_addr = qemu_get_be32(f); | |
1072 | so->so_fport = qemu_get_be16(f); | |
1073 | so->so_lport = qemu_get_be16(f); | |
1074 | so->so_iptos = qemu_get_byte(f); | |
1075 | so->so_emu = qemu_get_byte(f); | |
1076 | so->so_type = qemu_get_byte(f); | |
1077 | so->so_state = qemu_get_be32(f); | |
1078 | if (slirp_sbuf_load(f, &so->so_rcv) < 0) | |
1079 | return -ENOMEM; | |
1080 | if (slirp_sbuf_load(f, &so->so_snd) < 0) | |
1081 | return -ENOMEM; | |
1082 | slirp_tcp_load(f, so->so_tcpcb); | |
1083 | ||
1084 | return 0; | |
1085 | } | |
1086 | ||
0a1f851e JK |
1087 | static void slirp_bootp_load(QEMUFile *f, Slirp *slirp) |
1088 | { | |
1089 | int i; | |
1090 | ||
1091 | for (i = 0; i < NB_BOOTP_CLIENTS; i++) { | |
1092 | slirp->bootp_clients[i].allocated = qemu_get_be16(f); | |
1093 | qemu_get_buffer(f, slirp->bootp_clients[i].macaddr, 6); | |
1094 | } | |
1095 | } | |
1096 | ||
062e5527 AL |
1097 | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id) |
1098 | { | |
460fec67 | 1099 | Slirp *slirp = opaque; |
062e5527 | 1100 | struct ex_list *ex_ptr; |
062e5527 | 1101 | |
b0e04867 | 1102 | while (qemu_get_byte(f)) { |
062e5527 | 1103 | int ret; |
460fec67 | 1104 | struct socket *so = socreate(slirp); |
062e5527 AL |
1105 | |
1106 | if (!so) | |
1107 | return -ENOMEM; | |
1108 | ||
1109 | ret = slirp_socket_load(f, so); | |
1110 | ||
1111 | if (ret < 0) | |
1112 | return ret; | |
1113 | ||
460fec67 JK |
1114 | if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) != |
1115 | slirp->vnetwork_addr.s_addr) { | |
062e5527 | 1116 | return -EINVAL; |
a13a4126 | 1117 | } |
460fec67 | 1118 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { |
062e5527 | 1119 | if (ex_ptr->ex_pty == 3 && |
a13a4126 JK |
1120 | so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr && |
1121 | so->so_fport == ex_ptr->ex_fport) { | |
062e5527 | 1122 | break; |
a13a4126 JK |
1123 | } |
1124 | } | |
062e5527 AL |
1125 | if (!ex_ptr) |
1126 | return -EINVAL; | |
1127 | ||
0580ac91 | 1128 | so->extra = (void *)ex_ptr->ex_exec; |
062e5527 AL |
1129 | } |
1130 | ||
285f7a62 | 1131 | if (version_id >= 2) { |
460fec67 | 1132 | slirp->ip_id = qemu_get_be16(f); |
285f7a62 JK |
1133 | } |
1134 | ||
0a1f851e JK |
1135 | if (version_id >= 3) { |
1136 | slirp_bootp_load(f, slirp); | |
1137 | } | |
1138 | ||
062e5527 AL |
1139 | return 0; |
1140 | } |