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1 | /* | |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 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 | */ | |
24 | #include <unistd.h> | |
25 | #include <fcntl.h> | |
26 | #include <signal.h> | |
27 | #include <time.h> | |
28 | #include <errno.h> | |
29 | #include <sys/time.h> | |
30 | #include <zlib.h> | |
31 | ||
32 | /* Needed early for CONFIG_BSD etc. */ | |
33 | #include "config-host.h" | |
34 | ||
35 | #ifndef _WIN32 | |
36 | #include <sys/times.h> | |
37 | #include <sys/wait.h> | |
38 | #include <termios.h> | |
39 | #include <sys/mman.h> | |
40 | #include <sys/ioctl.h> | |
41 | #include <sys/resource.h> | |
42 | #include <sys/socket.h> | |
43 | #include <netinet/in.h> | |
44 | #include <net/if.h> | |
45 | #ifdef __NetBSD__ | |
46 | #include <net/if_tap.h> | |
47 | #endif | |
48 | #ifdef __linux__ | |
49 | #include "net/tap-linux.h" | |
50 | #endif | |
51 | #include <arpa/inet.h> | |
52 | #include <dirent.h> | |
53 | #include <netdb.h> | |
54 | #include <sys/select.h> | |
55 | #ifdef CONFIG_BSD | |
56 | #include <sys/stat.h> | |
57 | #if defined(__FreeBSD__) || defined(__DragonFly__) | |
58 | #include <libutil.h> | |
59 | #else | |
60 | #include <util.h> | |
61 | #endif | |
62 | #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__) | |
63 | #include <freebsd/stdlib.h> | |
64 | #else | |
65 | #ifdef __linux__ | |
66 | #include <pty.h> | |
67 | #include <malloc.h> | |
68 | #include <linux/rtc.h> | |
69 | ||
70 | /* For the benefit of older linux systems which don't supply it, | |
71 | we use a local copy of hpet.h. */ | |
72 | /* #include <linux/hpet.h> */ | |
73 | #include "hpet.h" | |
74 | ||
75 | #include <linux/ppdev.h> | |
76 | #include <linux/parport.h> | |
77 | #endif | |
78 | #ifdef __sun__ | |
79 | #include <sys/stat.h> | |
80 | #include <sys/ethernet.h> | |
81 | #include <sys/sockio.h> | |
82 | #include <netinet/arp.h> | |
83 | #include <netinet/in.h> | |
84 | #include <netinet/in_systm.h> | |
85 | #include <netinet/ip.h> | |
86 | #include <netinet/ip_icmp.h> // must come after ip.h | |
87 | #include <netinet/udp.h> | |
88 | #include <netinet/tcp.h> | |
89 | #include <net/if.h> | |
90 | #include <syslog.h> | |
91 | #include <stropts.h> | |
92 | #endif | |
93 | #endif | |
94 | #endif | |
95 | ||
96 | #if defined(__OpenBSD__) | |
97 | #include <util.h> | |
98 | #endif | |
99 | ||
100 | #if defined(CONFIG_VDE) | |
101 | #include <libvdeplug.h> | |
102 | #endif | |
103 | ||
104 | #include "qemu-common.h" | |
105 | #include "net.h" | |
106 | #include "net/tap.h" | |
107 | #include "monitor.h" | |
108 | #include "sysemu.h" | |
109 | #include "qemu-timer.h" | |
110 | #include "qemu-char.h" | |
111 | #include "audio/audio.h" | |
112 | #include "qemu_socket.h" | |
113 | #include "qemu-log.h" | |
114 | #include "qemu-config.h" | |
115 | ||
116 | #include "slirp/libslirp.h" | |
117 | ||
118 | static QTAILQ_HEAD(, VLANState) vlans; | |
119 | static QTAILQ_HEAD(, VLANClientState) non_vlan_clients; | |
120 | ||
121 | /***********************************************************/ | |
122 | /* network device redirectors */ | |
123 | ||
124 | #if defined(DEBUG_NET) || defined(DEBUG_SLIRP) | |
125 | static void hex_dump(FILE *f, const uint8_t *buf, int size) | |
126 | { | |
127 | int len, i, j, c; | |
128 | ||
129 | for(i=0;i<size;i+=16) { | |
130 | len = size - i; | |
131 | if (len > 16) | |
132 | len = 16; | |
133 | fprintf(f, "%08x ", i); | |
134 | for(j=0;j<16;j++) { | |
135 | if (j < len) | |
136 | fprintf(f, " %02x", buf[i+j]); | |
137 | else | |
138 | fprintf(f, " "); | |
139 | } | |
140 | fprintf(f, " "); | |
141 | for(j=0;j<len;j++) { | |
142 | c = buf[i+j]; | |
143 | if (c < ' ' || c > '~') | |
144 | c = '.'; | |
145 | fprintf(f, "%c", c); | |
146 | } | |
147 | fprintf(f, "\n"); | |
148 | } | |
149 | } | |
150 | #endif | |
151 | ||
152 | static int parse_macaddr(uint8_t *macaddr, const char *p) | |
153 | { | |
154 | int i; | |
155 | char *last_char; | |
156 | long int offset; | |
157 | ||
158 | errno = 0; | |
159 | offset = strtol(p, &last_char, 0); | |
160 | if (0 == errno && '\0' == *last_char && | |
161 | offset >= 0 && offset <= 0xFFFFFF) { | |
162 | macaddr[3] = (offset & 0xFF0000) >> 16; | |
163 | macaddr[4] = (offset & 0xFF00) >> 8; | |
164 | macaddr[5] = offset & 0xFF; | |
165 | return 0; | |
166 | } else { | |
167 | for(i = 0; i < 6; i++) { | |
168 | macaddr[i] = strtol(p, (char **)&p, 16); | |
169 | if (i == 5) { | |
170 | if (*p != '\0') | |
171 | return -1; | |
172 | } else { | |
173 | if (*p != ':' && *p != '-') | |
174 | return -1; | |
175 | p++; | |
176 | } | |
177 | } | |
178 | return 0; | |
179 | } | |
180 | ||
181 | return -1; | |
182 | } | |
183 | ||
184 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) | |
185 | { | |
186 | const char *p, *p1; | |
187 | int len; | |
188 | p = *pp; | |
189 | p1 = strchr(p, sep); | |
190 | if (!p1) | |
191 | return -1; | |
192 | len = p1 - p; | |
193 | p1++; | |
194 | if (buf_size > 0) { | |
195 | if (len > buf_size - 1) | |
196 | len = buf_size - 1; | |
197 | memcpy(buf, p, len); | |
198 | buf[len] = '\0'; | |
199 | } | |
200 | *pp = p1; | |
201 | return 0; | |
202 | } | |
203 | ||
204 | int parse_host_src_port(struct sockaddr_in *haddr, | |
205 | struct sockaddr_in *saddr, | |
206 | const char *input_str) | |
207 | { | |
208 | char *str = strdup(input_str); | |
209 | char *host_str = str; | |
210 | char *src_str; | |
211 | const char *src_str2; | |
212 | char *ptr; | |
213 | ||
214 | /* | |
215 | * Chop off any extra arguments at the end of the string which | |
216 | * would start with a comma, then fill in the src port information | |
217 | * if it was provided else use the "any address" and "any port". | |
218 | */ | |
219 | if ((ptr = strchr(str,','))) | |
220 | *ptr = '\0'; | |
221 | ||
222 | if ((src_str = strchr(input_str,'@'))) { | |
223 | *src_str = '\0'; | |
224 | src_str++; | |
225 | } | |
226 | ||
227 | if (parse_host_port(haddr, host_str) < 0) | |
228 | goto fail; | |
229 | ||
230 | src_str2 = src_str; | |
231 | if (!src_str || *src_str == '\0') | |
232 | src_str2 = ":0"; | |
233 | ||
234 | if (parse_host_port(saddr, src_str2) < 0) | |
235 | goto fail; | |
236 | ||
237 | free(str); | |
238 | return(0); | |
239 | ||
240 | fail: | |
241 | free(str); | |
242 | return -1; | |
243 | } | |
244 | ||
245 | int parse_host_port(struct sockaddr_in *saddr, const char *str) | |
246 | { | |
247 | char buf[512]; | |
248 | struct hostent *he; | |
249 | const char *p, *r; | |
250 | int port; | |
251 | ||
252 | p = str; | |
253 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
254 | return -1; | |
255 | saddr->sin_family = AF_INET; | |
256 | if (buf[0] == '\0') { | |
257 | saddr->sin_addr.s_addr = 0; | |
258 | } else { | |
259 | if (qemu_isdigit(buf[0])) { | |
260 | if (!inet_aton(buf, &saddr->sin_addr)) | |
261 | return -1; | |
262 | } else { | |
263 | if ((he = gethostbyname(buf)) == NULL) | |
264 | return - 1; | |
265 | saddr->sin_addr = *(struct in_addr *)he->h_addr; | |
266 | } | |
267 | } | |
268 | port = strtol(p, (char **)&r, 0); | |
269 | if (r == p) | |
270 | return -1; | |
271 | saddr->sin_port = htons(port); | |
272 | return 0; | |
273 | } | |
274 | ||
275 | void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]) | |
276 | { | |
277 | snprintf(vc->info_str, sizeof(vc->info_str), | |
278 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", | |
279 | vc->model, | |
280 | macaddr[0], macaddr[1], macaddr[2], | |
281 | macaddr[3], macaddr[4], macaddr[5]); | |
282 | } | |
283 | ||
284 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) | |
285 | { | |
286 | static int index = 0; | |
287 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; | |
288 | ||
289 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) | |
290 | return; | |
291 | macaddr->a[0] = 0x52; | |
292 | macaddr->a[1] = 0x54; | |
293 | macaddr->a[2] = 0x00; | |
294 | macaddr->a[3] = 0x12; | |
295 | macaddr->a[4] = 0x34; | |
296 | macaddr->a[5] = 0x56 + index++; | |
297 | } | |
298 | ||
299 | static char *assign_name(VLANClientState *vc1, const char *model) | |
300 | { | |
301 | VLANState *vlan; | |
302 | char buf[256]; | |
303 | int id = 0; | |
304 | ||
305 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
306 | VLANClientState *vc; | |
307 | ||
308 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
309 | if (vc != vc1 && strcmp(vc->model, model) == 0) { | |
310 | id++; | |
311 | } | |
312 | } | |
313 | } | |
314 | ||
315 | snprintf(buf, sizeof(buf), "%s.%d", model, id); | |
316 | ||
317 | return qemu_strdup(buf); | |
318 | } | |
319 | ||
320 | static ssize_t qemu_deliver_packet(VLANClientState *sender, | |
321 | unsigned flags, | |
322 | const uint8_t *data, | |
323 | size_t size, | |
324 | void *opaque); | |
325 | static ssize_t qemu_deliver_packet_iov(VLANClientState *sender, | |
326 | unsigned flags, | |
327 | const struct iovec *iov, | |
328 | int iovcnt, | |
329 | void *opaque); | |
330 | ||
331 | VLANClientState *qemu_new_vlan_client(net_client_type type, | |
332 | VLANState *vlan, | |
333 | VLANClientState *peer, | |
334 | const char *model, | |
335 | const char *name, | |
336 | NetCanReceive *can_receive, | |
337 | NetReceive *receive, | |
338 | NetReceive *receive_raw, | |
339 | NetReceiveIOV *receive_iov, | |
340 | NetCleanup *cleanup, | |
341 | void *opaque) | |
342 | { | |
343 | VLANClientState *vc; | |
344 | ||
345 | vc = qemu_mallocz(sizeof(VLANClientState)); | |
346 | ||
347 | vc->type = type; | |
348 | vc->model = qemu_strdup(model); | |
349 | if (name) | |
350 | vc->name = qemu_strdup(name); | |
351 | else | |
352 | vc->name = assign_name(vc, model); | |
353 | vc->can_receive = can_receive; | |
354 | vc->receive = receive; | |
355 | vc->receive_raw = receive_raw; | |
356 | vc->receive_iov = receive_iov; | |
357 | vc->cleanup = cleanup; | |
358 | vc->opaque = opaque; | |
359 | ||
360 | if (vlan) { | |
361 | assert(!peer); | |
362 | vc->vlan = vlan; | |
363 | QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next); | |
364 | } else { | |
365 | if (peer) { | |
366 | vc->peer = peer; | |
367 | peer->peer = vc; | |
368 | } | |
369 | QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next); | |
370 | ||
371 | vc->send_queue = qemu_new_net_queue(qemu_deliver_packet, | |
372 | qemu_deliver_packet_iov, | |
373 | vc); | |
374 | } | |
375 | ||
376 | return vc; | |
377 | } | |
378 | ||
379 | void qemu_del_vlan_client(VLANClientState *vc) | |
380 | { | |
381 | if (vc->vlan) { | |
382 | QTAILQ_REMOVE(&vc->vlan->clients, vc, next); | |
383 | } else { | |
384 | if (vc->send_queue) { | |
385 | qemu_del_net_queue(vc->send_queue); | |
386 | } | |
387 | QTAILQ_REMOVE(&non_vlan_clients, vc, next); | |
388 | if (vc->peer) { | |
389 | vc->peer->peer = NULL; | |
390 | } | |
391 | } | |
392 | ||
393 | if (vc->cleanup) { | |
394 | vc->cleanup(vc); | |
395 | } | |
396 | ||
397 | qemu_free(vc->name); | |
398 | qemu_free(vc->model); | |
399 | qemu_free(vc); | |
400 | } | |
401 | ||
402 | VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque) | |
403 | { | |
404 | VLANClientState *vc; | |
405 | ||
406 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
407 | if (vc->opaque == opaque) { | |
408 | return vc; | |
409 | } | |
410 | } | |
411 | ||
412 | return NULL; | |
413 | } | |
414 | ||
415 | static VLANClientState * | |
416 | qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id, | |
417 | const char *client_str) | |
418 | { | |
419 | VLANState *vlan; | |
420 | VLANClientState *vc; | |
421 | ||
422 | vlan = qemu_find_vlan(vlan_id, 0); | |
423 | if (!vlan) { | |
424 | monitor_printf(mon, "unknown VLAN %d\n", vlan_id); | |
425 | return NULL; | |
426 | } | |
427 | ||
428 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
429 | if (!strcmp(vc->name, client_str)) { | |
430 | break; | |
431 | } | |
432 | } | |
433 | if (!vc) { | |
434 | monitor_printf(mon, "can't find device %s on VLAN %d\n", | |
435 | client_str, vlan_id); | |
436 | } | |
437 | ||
438 | return vc; | |
439 | } | |
440 | ||
441 | int qemu_can_send_packet(VLANClientState *sender) | |
442 | { | |
443 | VLANState *vlan = sender->vlan; | |
444 | VLANClientState *vc; | |
445 | ||
446 | if (sender->peer) { | |
447 | if (!sender->peer->can_receive || | |
448 | sender->peer->can_receive(sender->peer)) { | |
449 | return 1; | |
450 | } else { | |
451 | return 0; | |
452 | } | |
453 | } | |
454 | ||
455 | if (!sender->vlan) { | |
456 | return 1; | |
457 | } | |
458 | ||
459 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
460 | if (vc == sender) { | |
461 | continue; | |
462 | } | |
463 | ||
464 | /* no can_receive() handler, they can always receive */ | |
465 | if (!vc->can_receive || vc->can_receive(vc)) { | |
466 | return 1; | |
467 | } | |
468 | } | |
469 | return 0; | |
470 | } | |
471 | ||
472 | static ssize_t qemu_deliver_packet(VLANClientState *sender, | |
473 | unsigned flags, | |
474 | const uint8_t *data, | |
475 | size_t size, | |
476 | void *opaque) | |
477 | { | |
478 | VLANClientState *vc = opaque; | |
479 | ||
480 | if (vc->link_down) { | |
481 | return size; | |
482 | } | |
483 | ||
484 | if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw) | |
485 | return vc->receive_raw(vc, data, size); | |
486 | else | |
487 | return vc->receive(vc, data, size); | |
488 | } | |
489 | ||
490 | static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender, | |
491 | unsigned flags, | |
492 | const uint8_t *buf, | |
493 | size_t size, | |
494 | void *opaque) | |
495 | { | |
496 | VLANState *vlan = opaque; | |
497 | VLANClientState *vc; | |
498 | int ret = -1; | |
499 | ||
500 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
501 | ssize_t len; | |
502 | ||
503 | if (vc == sender) { | |
504 | continue; | |
505 | } | |
506 | ||
507 | if (vc->link_down) { | |
508 | ret = size; | |
509 | continue; | |
510 | } | |
511 | ||
512 | if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw) | |
513 | len = vc->receive_raw(vc, buf, size); | |
514 | else | |
515 | len = vc->receive(vc, buf, size); | |
516 | ||
517 | ret = (ret >= 0) ? ret : len; | |
518 | } | |
519 | ||
520 | return ret; | |
521 | } | |
522 | ||
523 | void qemu_purge_queued_packets(VLANClientState *vc) | |
524 | { | |
525 | NetQueue *queue; | |
526 | ||
527 | if (!vc->peer && !vc->vlan) { | |
528 | return; | |
529 | } | |
530 | ||
531 | if (vc->peer) { | |
532 | queue = vc->peer->send_queue; | |
533 | } else { | |
534 | queue = vc->vlan->send_queue; | |
535 | } | |
536 | ||
537 | qemu_net_queue_purge(queue, vc); | |
538 | } | |
539 | ||
540 | void qemu_flush_queued_packets(VLANClientState *vc) | |
541 | { | |
542 | NetQueue *queue; | |
543 | ||
544 | if (vc->vlan) { | |
545 | queue = vc->vlan->send_queue; | |
546 | } else { | |
547 | queue = vc->send_queue; | |
548 | } | |
549 | ||
550 | qemu_net_queue_flush(queue); | |
551 | } | |
552 | ||
553 | static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender, | |
554 | unsigned flags, | |
555 | const uint8_t *buf, int size, | |
556 | NetPacketSent *sent_cb) | |
557 | { | |
558 | NetQueue *queue; | |
559 | ||
560 | #ifdef DEBUG_NET | |
561 | printf("qemu_send_packet_async:\n"); | |
562 | hex_dump(stdout, buf, size); | |
563 | #endif | |
564 | ||
565 | if (sender->link_down || (!sender->peer && !sender->vlan)) { | |
566 | return size; | |
567 | } | |
568 | ||
569 | if (sender->peer) { | |
570 | queue = sender->peer->send_queue; | |
571 | } else { | |
572 | queue = sender->vlan->send_queue; | |
573 | } | |
574 | ||
575 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); | |
576 | } | |
577 | ||
578 | ssize_t qemu_send_packet_async(VLANClientState *sender, | |
579 | const uint8_t *buf, int size, | |
580 | NetPacketSent *sent_cb) | |
581 | { | |
582 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
583 | buf, size, sent_cb); | |
584 | } | |
585 | ||
586 | void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) | |
587 | { | |
588 | qemu_send_packet_async(vc, buf, size, NULL); | |
589 | } | |
590 | ||
591 | ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size) | |
592 | { | |
593 | return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW, | |
594 | buf, size, NULL); | |
595 | } | |
596 | ||
597 | static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, | |
598 | int iovcnt) | |
599 | { | |
600 | uint8_t buffer[4096]; | |
601 | size_t offset = 0; | |
602 | int i; | |
603 | ||
604 | for (i = 0; i < iovcnt; i++) { | |
605 | size_t len; | |
606 | ||
607 | len = MIN(sizeof(buffer) - offset, iov[i].iov_len); | |
608 | memcpy(buffer + offset, iov[i].iov_base, len); | |
609 | offset += len; | |
610 | } | |
611 | ||
612 | return vc->receive(vc, buffer, offset); | |
613 | } | |
614 | ||
615 | static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt) | |
616 | { | |
617 | size_t offset = 0; | |
618 | int i; | |
619 | ||
620 | for (i = 0; i < iovcnt; i++) | |
621 | offset += iov[i].iov_len; | |
622 | return offset; | |
623 | } | |
624 | ||
625 | static ssize_t qemu_deliver_packet_iov(VLANClientState *sender, | |
626 | unsigned flags, | |
627 | const struct iovec *iov, | |
628 | int iovcnt, | |
629 | void *opaque) | |
630 | { | |
631 | VLANClientState *vc = opaque; | |
632 | ||
633 | if (vc->link_down) { | |
634 | return calc_iov_length(iov, iovcnt); | |
635 | } | |
636 | ||
637 | if (vc->receive_iov) { | |
638 | return vc->receive_iov(vc, iov, iovcnt); | |
639 | } else { | |
640 | return vc_sendv_compat(vc, iov, iovcnt); | |
641 | } | |
642 | } | |
643 | ||
644 | static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender, | |
645 | unsigned flags, | |
646 | const struct iovec *iov, | |
647 | int iovcnt, | |
648 | void *opaque) | |
649 | { | |
650 | VLANState *vlan = opaque; | |
651 | VLANClientState *vc; | |
652 | ssize_t ret = -1; | |
653 | ||
654 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
655 | ssize_t len; | |
656 | ||
657 | if (vc == sender) { | |
658 | continue; | |
659 | } | |
660 | ||
661 | if (vc->link_down) { | |
662 | ret = calc_iov_length(iov, iovcnt); | |
663 | continue; | |
664 | } | |
665 | ||
666 | assert(!(flags & QEMU_NET_PACKET_FLAG_RAW)); | |
667 | ||
668 | if (vc->receive_iov) { | |
669 | len = vc->receive_iov(vc, iov, iovcnt); | |
670 | } else { | |
671 | len = vc_sendv_compat(vc, iov, iovcnt); | |
672 | } | |
673 | ||
674 | ret = (ret >= 0) ? ret : len; | |
675 | } | |
676 | ||
677 | return ret; | |
678 | } | |
679 | ||
680 | ssize_t qemu_sendv_packet_async(VLANClientState *sender, | |
681 | const struct iovec *iov, int iovcnt, | |
682 | NetPacketSent *sent_cb) | |
683 | { | |
684 | NetQueue *queue; | |
685 | ||
686 | if (sender->link_down || (!sender->peer && !sender->vlan)) { | |
687 | return calc_iov_length(iov, iovcnt); | |
688 | } | |
689 | ||
690 | if (sender->peer) { | |
691 | queue = sender->peer->send_queue; | |
692 | } else { | |
693 | queue = sender->vlan->send_queue; | |
694 | } | |
695 | ||
696 | return qemu_net_queue_send_iov(queue, sender, | |
697 | QEMU_NET_PACKET_FLAG_NONE, | |
698 | iov, iovcnt, sent_cb); | |
699 | } | |
700 | ||
701 | ssize_t | |
702 | qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) | |
703 | { | |
704 | return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); | |
705 | } | |
706 | ||
707 | #if defined(CONFIG_SLIRP) | |
708 | ||
709 | /* slirp network adapter */ | |
710 | ||
711 | #define SLIRP_CFG_HOSTFWD 1 | |
712 | #define SLIRP_CFG_LEGACY 2 | |
713 | ||
714 | struct slirp_config_str { | |
715 | struct slirp_config_str *next; | |
716 | int flags; | |
717 | char str[1024]; | |
718 | int legacy_format; | |
719 | }; | |
720 | ||
721 | typedef struct SlirpState { | |
722 | QTAILQ_ENTRY(SlirpState) entry; | |
723 | VLANClientState *vc; | |
724 | Slirp *slirp; | |
725 | #ifndef _WIN32 | |
726 | char smb_dir[128]; | |
727 | #endif | |
728 | } SlirpState; | |
729 | ||
730 | static struct slirp_config_str *slirp_configs; | |
731 | const char *legacy_tftp_prefix; | |
732 | const char *legacy_bootp_filename; | |
733 | static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks = | |
734 | QTAILQ_HEAD_INITIALIZER(slirp_stacks); | |
735 | ||
736 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, | |
737 | int legacy_format); | |
738 | static int slirp_guestfwd(SlirpState *s, const char *config_str, | |
739 | int legacy_format); | |
740 | ||
741 | #ifndef _WIN32 | |
742 | static const char *legacy_smb_export; | |
743 | ||
744 | static int slirp_smb(SlirpState *s, const char *exported_dir, | |
745 | struct in_addr vserver_addr); | |
746 | static void slirp_smb_cleanup(SlirpState *s); | |
747 | #else | |
748 | static inline void slirp_smb_cleanup(SlirpState *s) { } | |
749 | #endif | |
750 | ||
751 | int slirp_can_output(void *opaque) | |
752 | { | |
753 | SlirpState *s = opaque; | |
754 | ||
755 | return qemu_can_send_packet(s->vc); | |
756 | } | |
757 | ||
758 | void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len) | |
759 | { | |
760 | SlirpState *s = opaque; | |
761 | ||
762 | #ifdef DEBUG_SLIRP | |
763 | printf("slirp output:\n"); | |
764 | hex_dump(stdout, pkt, pkt_len); | |
765 | #endif | |
766 | qemu_send_packet(s->vc, pkt, pkt_len); | |
767 | } | |
768 | ||
769 | static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size) | |
770 | { | |
771 | SlirpState *s = vc->opaque; | |
772 | ||
773 | #ifdef DEBUG_SLIRP | |
774 | printf("slirp input:\n"); | |
775 | hex_dump(stdout, buf, size); | |
776 | #endif | |
777 | slirp_input(s->slirp, buf, size); | |
778 | return size; | |
779 | } | |
780 | ||
781 | static void net_slirp_cleanup(VLANClientState *vc) | |
782 | { | |
783 | SlirpState *s = vc->opaque; | |
784 | ||
785 | slirp_cleanup(s->slirp); | |
786 | slirp_smb_cleanup(s); | |
787 | QTAILQ_REMOVE(&slirp_stacks, s, entry); | |
788 | qemu_free(s); | |
789 | } | |
790 | ||
791 | static int net_slirp_init(VLANState *vlan, const char *model, | |
792 | const char *name, int restricted, | |
793 | const char *vnetwork, const char *vhost, | |
794 | const char *vhostname, const char *tftp_export, | |
795 | const char *bootfile, const char *vdhcp_start, | |
796 | const char *vnameserver, const char *smb_export, | |
797 | const char *vsmbserver) | |
798 | { | |
799 | /* default settings according to historic slirp */ | |
800 | struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */ | |
801 | struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */ | |
802 | struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */ | |
803 | struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */ | |
804 | struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */ | |
805 | #ifndef _WIN32 | |
806 | struct in_addr smbsrv = { .s_addr = 0 }; | |
807 | #endif | |
808 | SlirpState *s; | |
809 | char buf[20]; | |
810 | uint32_t addr; | |
811 | int shift; | |
812 | char *end; | |
813 | struct slirp_config_str *config; | |
814 | ||
815 | if (!tftp_export) { | |
816 | tftp_export = legacy_tftp_prefix; | |
817 | } | |
818 | if (!bootfile) { | |
819 | bootfile = legacy_bootp_filename; | |
820 | } | |
821 | ||
822 | if (vnetwork) { | |
823 | if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { | |
824 | if (!inet_aton(vnetwork, &net)) { | |
825 | return -1; | |
826 | } | |
827 | addr = ntohl(net.s_addr); | |
828 | if (!(addr & 0x80000000)) { | |
829 | mask.s_addr = htonl(0xff000000); /* class A */ | |
830 | } else if ((addr & 0xfff00000) == 0xac100000) { | |
831 | mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */ | |
832 | } else if ((addr & 0xc0000000) == 0x80000000) { | |
833 | mask.s_addr = htonl(0xffff0000); /* class B */ | |
834 | } else if ((addr & 0xffff0000) == 0xc0a80000) { | |
835 | mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */ | |
836 | } else if ((addr & 0xffff0000) == 0xc6120000) { | |
837 | mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ | |
838 | } else if ((addr & 0xe0000000) == 0xe0000000) { | |
839 | mask.s_addr = htonl(0xffffff00); /* class C */ | |
840 | } else { | |
841 | mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ | |
842 | } | |
843 | } else { | |
844 | if (!inet_aton(buf, &net)) { | |
845 | return -1; | |
846 | } | |
847 | shift = strtol(vnetwork, &end, 10); | |
848 | if (*end != '\0') { | |
849 | if (!inet_aton(vnetwork, &mask)) { | |
850 | return -1; | |
851 | } | |
852 | } else if (shift < 4 || shift > 32) { | |
853 | return -1; | |
854 | } else { | |
855 | mask.s_addr = htonl(0xffffffff << (32 - shift)); | |
856 | } | |
857 | } | |
858 | net.s_addr &= mask.s_addr; | |
859 | host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr); | |
860 | dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr); | |
861 | dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr); | |
862 | } | |
863 | ||
864 | if (vhost && !inet_aton(vhost, &host)) { | |
865 | return -1; | |
866 | } | |
867 | if ((host.s_addr & mask.s_addr) != net.s_addr) { | |
868 | return -1; | |
869 | } | |
870 | ||
871 | if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) { | |
872 | return -1; | |
873 | } | |
874 | if ((dhcp.s_addr & mask.s_addr) != net.s_addr || | |
875 | dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) { | |
876 | return -1; | |
877 | } | |
878 | ||
879 | if (vnameserver && !inet_aton(vnameserver, &dns)) { | |
880 | return -1; | |
881 | } | |
882 | if ((dns.s_addr & mask.s_addr) != net.s_addr || | |
883 | dns.s_addr == host.s_addr) { | |
884 | return -1; | |
885 | } | |
886 | ||
887 | #ifndef _WIN32 | |
888 | if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) { | |
889 | return -1; | |
890 | } | |
891 | #endif | |
892 | ||
893 | s = qemu_mallocz(sizeof(SlirpState)); | |
894 | s->slirp = slirp_init(restricted, net, mask, host, vhostname, | |
895 | tftp_export, bootfile, dhcp, dns, s); | |
896 | QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); | |
897 | ||
898 | for (config = slirp_configs; config; config = config->next) { | |
899 | if (config->flags & SLIRP_CFG_HOSTFWD) { | |
900 | if (slirp_hostfwd(s, config->str, | |
901 | config->flags & SLIRP_CFG_LEGACY) < 0) | |
902 | return -1; | |
903 | } else { | |
904 | if (slirp_guestfwd(s, config->str, | |
905 | config->flags & SLIRP_CFG_LEGACY) < 0) | |
906 | return -1; | |
907 | } | |
908 | } | |
909 | #ifndef _WIN32 | |
910 | if (!smb_export) { | |
911 | smb_export = legacy_smb_export; | |
912 | } | |
913 | if (smb_export) { | |
914 | if (slirp_smb(s, smb_export, smbsrv) < 0) | |
915 | return -1; | |
916 | } | |
917 | #endif | |
918 | ||
919 | s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SLIRP, | |
920 | vlan, NULL, model, name, NULL, | |
921 | slirp_receive, NULL, NULL, | |
922 | net_slirp_cleanup, s); | |
923 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
924 | "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n'); | |
925 | return 0; | |
926 | } | |
927 | ||
928 | static SlirpState *slirp_lookup(Monitor *mon, const char *vlan, | |
929 | const char *stack) | |
930 | { | |
931 | VLANClientState *vc; | |
932 | ||
933 | if (vlan) { | |
934 | vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack); | |
935 | if (!vc) { | |
936 | return NULL; | |
937 | } | |
938 | if (strcmp(vc->model, "user")) { | |
939 | monitor_printf(mon, "invalid device specified\n"); | |
940 | return NULL; | |
941 | } | |
942 | return vc->opaque; | |
943 | } else { | |
944 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
945 | monitor_printf(mon, "user mode network stack not in use\n"); | |
946 | return NULL; | |
947 | } | |
948 | return QTAILQ_FIRST(&slirp_stacks); | |
949 | } | |
950 | } | |
951 | ||
952 | void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict) | |
953 | { | |
954 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
955 | int host_port; | |
956 | char buf[256] = ""; | |
957 | const char *src_str, *p; | |
958 | SlirpState *s; | |
959 | int is_udp = 0; | |
960 | int err; | |
961 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
962 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
963 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
964 | ||
965 | if (arg2) { | |
966 | s = slirp_lookup(mon, arg1, arg2); | |
967 | src_str = arg3; | |
968 | } else { | |
969 | s = slirp_lookup(mon, NULL, NULL); | |
970 | src_str = arg1; | |
971 | } | |
972 | if (!s) { | |
973 | return; | |
974 | } | |
975 | ||
976 | if (!src_str || !src_str[0]) | |
977 | goto fail_syntax; | |
978 | ||
979 | p = src_str; | |
980 | get_str_sep(buf, sizeof(buf), &p, ':'); | |
981 | ||
982 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
983 | is_udp = 0; | |
984 | } else if (!strcmp(buf, "udp")) { | |
985 | is_udp = 1; | |
986 | } else { | |
987 | goto fail_syntax; | |
988 | } | |
989 | ||
990 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
991 | goto fail_syntax; | |
992 | } | |
993 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
994 | goto fail_syntax; | |
995 | } | |
996 | ||
997 | host_port = atoi(p); | |
998 | ||
999 | err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp, | |
1000 | host_addr, host_port); | |
1001 | ||
1002 | monitor_printf(mon, "host forwarding rule for %s %s\n", src_str, | |
1003 | err ? "removed" : "not found"); | |
1004 | return; | |
1005 | ||
1006 | fail_syntax: | |
1007 | monitor_printf(mon, "invalid format\n"); | |
1008 | } | |
1009 | ||
1010 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, | |
1011 | int legacy_format) | |
1012 | { | |
1013 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
1014 | struct in_addr guest_addr = { .s_addr = 0 }; | |
1015 | int host_port, guest_port; | |
1016 | const char *p; | |
1017 | char buf[256]; | |
1018 | int is_udp; | |
1019 | char *end; | |
1020 | ||
1021 | p = redir_str; | |
1022 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
1023 | goto fail_syntax; | |
1024 | } | |
1025 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
1026 | is_udp = 0; | |
1027 | } else if (!strcmp(buf, "udp")) { | |
1028 | is_udp = 1; | |
1029 | } else { | |
1030 | goto fail_syntax; | |
1031 | } | |
1032 | ||
1033 | if (!legacy_format) { | |
1034 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
1035 | goto fail_syntax; | |
1036 | } | |
1037 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
1038 | goto fail_syntax; | |
1039 | } | |
1040 | } | |
1041 | ||
1042 | if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) { | |
1043 | goto fail_syntax; | |
1044 | } | |
1045 | host_port = strtol(buf, &end, 0); | |
1046 | if (*end != '\0' || host_port < 1 || host_port > 65535) { | |
1047 | goto fail_syntax; | |
1048 | } | |
1049 | ||
1050 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
1051 | goto fail_syntax; | |
1052 | } | |
1053 | if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { | |
1054 | goto fail_syntax; | |
1055 | } | |
1056 | ||
1057 | guest_port = strtol(p, &end, 0); | |
1058 | if (*end != '\0' || guest_port < 1 || guest_port > 65535) { | |
1059 | goto fail_syntax; | |
1060 | } | |
1061 | ||
1062 | if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr, | |
1063 | guest_port) < 0) { | |
1064 | qemu_error("could not set up host forwarding rule '%s'\n", | |
1065 | redir_str); | |
1066 | return -1; | |
1067 | } | |
1068 | return 0; | |
1069 | ||
1070 | fail_syntax: | |
1071 | qemu_error("invalid host forwarding rule '%s'\n", redir_str); | |
1072 | return -1; | |
1073 | } | |
1074 | ||
1075 | void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict) | |
1076 | { | |
1077 | const char *redir_str; | |
1078 | SlirpState *s; | |
1079 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
1080 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
1081 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
1082 | ||
1083 | if (arg2) { | |
1084 | s = slirp_lookup(mon, arg1, arg2); | |
1085 | redir_str = arg3; | |
1086 | } else { | |
1087 | s = slirp_lookup(mon, NULL, NULL); | |
1088 | redir_str = arg1; | |
1089 | } | |
1090 | if (s) { | |
1091 | slirp_hostfwd(s, redir_str, 0); | |
1092 | } | |
1093 | ||
1094 | } | |
1095 | ||
1096 | int net_slirp_redir(const char *redir_str) | |
1097 | { | |
1098 | struct slirp_config_str *config; | |
1099 | ||
1100 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
1101 | config = qemu_malloc(sizeof(*config)); | |
1102 | pstrcpy(config->str, sizeof(config->str), redir_str); | |
1103 | config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY; | |
1104 | config->next = slirp_configs; | |
1105 | slirp_configs = config; | |
1106 | return 0; | |
1107 | } | |
1108 | ||
1109 | return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1); | |
1110 | } | |
1111 | ||
1112 | #ifndef _WIN32 | |
1113 | ||
1114 | /* automatic user mode samba server configuration */ | |
1115 | static void slirp_smb_cleanup(SlirpState *s) | |
1116 | { | |
1117 | char cmd[128]; | |
1118 | ||
1119 | if (s->smb_dir[0] != '\0') { | |
1120 | snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir); | |
1121 | system(cmd); | |
1122 | s->smb_dir[0] = '\0'; | |
1123 | } | |
1124 | } | |
1125 | ||
1126 | static int slirp_smb(SlirpState* s, const char *exported_dir, | |
1127 | struct in_addr vserver_addr) | |
1128 | { | |
1129 | static int instance; | |
1130 | char smb_conf[128]; | |
1131 | char smb_cmdline[128]; | |
1132 | FILE *f; | |
1133 | ||
1134 | snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d", | |
1135 | (long)getpid(), instance++); | |
1136 | if (mkdir(s->smb_dir, 0700) < 0) { | |
1137 | qemu_error("could not create samba server dir '%s'\n", s->smb_dir); | |
1138 | return -1; | |
1139 | } | |
1140 | snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf"); | |
1141 | ||
1142 | f = fopen(smb_conf, "w"); | |
1143 | if (!f) { | |
1144 | slirp_smb_cleanup(s); | |
1145 | qemu_error("could not create samba server configuration file '%s'\n", | |
1146 | smb_conf); | |
1147 | return -1; | |
1148 | } | |
1149 | fprintf(f, | |
1150 | "[global]\n" | |
1151 | "private dir=%s\n" | |
1152 | "smb ports=0\n" | |
1153 | "socket address=127.0.0.1\n" | |
1154 | "pid directory=%s\n" | |
1155 | "lock directory=%s\n" | |
1156 | "log file=%s/log.smbd\n" | |
1157 | "smb passwd file=%s/smbpasswd\n" | |
1158 | "security = share\n" | |
1159 | "[qemu]\n" | |
1160 | "path=%s\n" | |
1161 | "read only=no\n" | |
1162 | "guest ok=yes\n", | |
1163 | s->smb_dir, | |
1164 | s->smb_dir, | |
1165 | s->smb_dir, | |
1166 | s->smb_dir, | |
1167 | s->smb_dir, | |
1168 | exported_dir | |
1169 | ); | |
1170 | fclose(f); | |
1171 | ||
1172 | snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", | |
1173 | SMBD_COMMAND, smb_conf); | |
1174 | ||
1175 | if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) { | |
1176 | slirp_smb_cleanup(s); | |
1177 | qemu_error("conflicting/invalid smbserver address\n"); | |
1178 | return -1; | |
1179 | } | |
1180 | return 0; | |
1181 | } | |
1182 | ||
1183 | /* automatic user mode samba server configuration (legacy interface) */ | |
1184 | int net_slirp_smb(const char *exported_dir) | |
1185 | { | |
1186 | struct in_addr vserver_addr = { .s_addr = 0 }; | |
1187 | ||
1188 | if (legacy_smb_export) { | |
1189 | fprintf(stderr, "-smb given twice\n"); | |
1190 | return -1; | |
1191 | } | |
1192 | legacy_smb_export = exported_dir; | |
1193 | if (!QTAILQ_EMPTY(&slirp_stacks)) { | |
1194 | return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir, | |
1195 | vserver_addr); | |
1196 | } | |
1197 | return 0; | |
1198 | } | |
1199 | ||
1200 | #endif /* !defined(_WIN32) */ | |
1201 | ||
1202 | struct GuestFwd { | |
1203 | CharDriverState *hd; | |
1204 | struct in_addr server; | |
1205 | int port; | |
1206 | Slirp *slirp; | |
1207 | }; | |
1208 | ||
1209 | static int guestfwd_can_read(void *opaque) | |
1210 | { | |
1211 | struct GuestFwd *fwd = opaque; | |
1212 | return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port); | |
1213 | } | |
1214 | ||
1215 | static void guestfwd_read(void *opaque, const uint8_t *buf, int size) | |
1216 | { | |
1217 | struct GuestFwd *fwd = opaque; | |
1218 | slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); | |
1219 | } | |
1220 | ||
1221 | static int slirp_guestfwd(SlirpState *s, const char *config_str, | |
1222 | int legacy_format) | |
1223 | { | |
1224 | struct in_addr server = { .s_addr = 0 }; | |
1225 | struct GuestFwd *fwd; | |
1226 | const char *p; | |
1227 | char buf[128]; | |
1228 | char *end; | |
1229 | int port; | |
1230 | ||
1231 | p = config_str; | |
1232 | if (legacy_format) { | |
1233 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
1234 | goto fail_syntax; | |
1235 | } | |
1236 | } else { | |
1237 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
1238 | goto fail_syntax; | |
1239 | } | |
1240 | if (strcmp(buf, "tcp") && buf[0] != '\0') { | |
1241 | goto fail_syntax; | |
1242 | } | |
1243 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
1244 | goto fail_syntax; | |
1245 | } | |
1246 | if (buf[0] != '\0' && !inet_aton(buf, &server)) { | |
1247 | goto fail_syntax; | |
1248 | } | |
1249 | if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { | |
1250 | goto fail_syntax; | |
1251 | } | |
1252 | } | |
1253 | port = strtol(buf, &end, 10); | |
1254 | if (*end != '\0' || port < 1 || port > 65535) { | |
1255 | goto fail_syntax; | |
1256 | } | |
1257 | ||
1258 | fwd = qemu_malloc(sizeof(struct GuestFwd)); | |
1259 | snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port); | |
1260 | fwd->hd = qemu_chr_open(buf, p, NULL); | |
1261 | if (!fwd->hd) { | |
1262 | qemu_error("could not open guest forwarding device '%s'\n", buf); | |
1263 | qemu_free(fwd); | |
1264 | return -1; | |
1265 | } | |
1266 | ||
1267 | if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) { | |
1268 | qemu_error("conflicting/invalid host:port in guest forwarding " | |
1269 | "rule '%s'\n", config_str); | |
1270 | qemu_free(fwd); | |
1271 | return -1; | |
1272 | } | |
1273 | fwd->server = server; | |
1274 | fwd->port = port; | |
1275 | fwd->slirp = s->slirp; | |
1276 | ||
1277 | qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read, | |
1278 | NULL, fwd); | |
1279 | return 0; | |
1280 | ||
1281 | fail_syntax: | |
1282 | qemu_error("invalid guest forwarding rule '%s'\n", config_str); | |
1283 | return -1; | |
1284 | } | |
1285 | ||
1286 | void do_info_usernet(Monitor *mon) | |
1287 | { | |
1288 | SlirpState *s; | |
1289 | ||
1290 | QTAILQ_FOREACH(s, &slirp_stacks, entry) { | |
1291 | monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name); | |
1292 | slirp_connection_info(s->slirp, mon); | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | #endif /* CONFIG_SLIRP */ | |
1297 | ||
1298 | #if !defined(_WIN32) && !defined(_AIX) | |
1299 | ||
1300 | /* Maximum GSO packet size (64k) plus plenty of room for | |
1301 | * the ethernet and virtio_net headers | |
1302 | */ | |
1303 | #define TAP_BUFSIZE (4096 + 65536) | |
1304 | ||
1305 | typedef struct TAPState { | |
1306 | VLANClientState *vc; | |
1307 | int fd; | |
1308 | char down_script[1024]; | |
1309 | char down_script_arg[128]; | |
1310 | uint8_t buf[TAP_BUFSIZE]; | |
1311 | unsigned int read_poll : 1; | |
1312 | unsigned int write_poll : 1; | |
1313 | unsigned int has_vnet_hdr : 1; | |
1314 | unsigned int using_vnet_hdr : 1; | |
1315 | unsigned int has_ufo: 1; | |
1316 | } TAPState; | |
1317 | ||
1318 | static int launch_script(const char *setup_script, const char *ifname, int fd); | |
1319 | ||
1320 | static int tap_can_send(void *opaque); | |
1321 | static void tap_send(void *opaque); | |
1322 | static void tap_writable(void *opaque); | |
1323 | ||
1324 | static void tap_update_fd_handler(TAPState *s) | |
1325 | { | |
1326 | qemu_set_fd_handler2(s->fd, | |
1327 | s->read_poll ? tap_can_send : NULL, | |
1328 | s->read_poll ? tap_send : NULL, | |
1329 | s->write_poll ? tap_writable : NULL, | |
1330 | s); | |
1331 | } | |
1332 | ||
1333 | static void tap_read_poll(TAPState *s, int enable) | |
1334 | { | |
1335 | s->read_poll = !!enable; | |
1336 | tap_update_fd_handler(s); | |
1337 | } | |
1338 | ||
1339 | static void tap_write_poll(TAPState *s, int enable) | |
1340 | { | |
1341 | s->write_poll = !!enable; | |
1342 | tap_update_fd_handler(s); | |
1343 | } | |
1344 | ||
1345 | static void tap_writable(void *opaque) | |
1346 | { | |
1347 | TAPState *s = opaque; | |
1348 | ||
1349 | tap_write_poll(s, 0); | |
1350 | ||
1351 | qemu_flush_queued_packets(s->vc); | |
1352 | } | |
1353 | ||
1354 | static ssize_t tap_write_packet(TAPState *s, const struct iovec *iov, int iovcnt) | |
1355 | { | |
1356 | ssize_t len; | |
1357 | ||
1358 | do { | |
1359 | len = writev(s->fd, iov, iovcnt); | |
1360 | } while (len == -1 && errno == EINTR); | |
1361 | ||
1362 | if (len == -1 && errno == EAGAIN) { | |
1363 | tap_write_poll(s, 1); | |
1364 | return 0; | |
1365 | } | |
1366 | ||
1367 | return len; | |
1368 | } | |
1369 | ||
1370 | static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov, | |
1371 | int iovcnt) | |
1372 | { | |
1373 | TAPState *s = vc->opaque; | |
1374 | const struct iovec *iovp = iov; | |
1375 | struct iovec iov_copy[iovcnt + 1]; | |
1376 | struct virtio_net_hdr hdr = { 0, }; | |
1377 | ||
1378 | if (s->has_vnet_hdr && !s->using_vnet_hdr) { | |
1379 | iov_copy[0].iov_base = &hdr; | |
1380 | iov_copy[0].iov_len = sizeof(hdr); | |
1381 | memcpy(&iov_copy[1], iov, iovcnt * sizeof(*iov)); | |
1382 | iovp = iov_copy; | |
1383 | iovcnt++; | |
1384 | } | |
1385 | ||
1386 | return tap_write_packet(s, iovp, iovcnt); | |
1387 | } | |
1388 | ||
1389 | static ssize_t tap_receive_raw(VLANClientState *vc, const uint8_t *buf, size_t size) | |
1390 | { | |
1391 | TAPState *s = vc->opaque; | |
1392 | struct iovec iov[2]; | |
1393 | int iovcnt = 0; | |
1394 | struct virtio_net_hdr hdr = { 0, }; | |
1395 | ||
1396 | if (s->has_vnet_hdr) { | |
1397 | iov[iovcnt].iov_base = &hdr; | |
1398 | iov[iovcnt].iov_len = sizeof(hdr); | |
1399 | iovcnt++; | |
1400 | } | |
1401 | ||
1402 | iov[iovcnt].iov_base = (char *)buf; | |
1403 | iov[iovcnt].iov_len = size; | |
1404 | iovcnt++; | |
1405 | ||
1406 | return tap_write_packet(s, iov, iovcnt); | |
1407 | } | |
1408 | ||
1409 | static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size) | |
1410 | { | |
1411 | TAPState *s = vc->opaque; | |
1412 | struct iovec iov[1]; | |
1413 | ||
1414 | if (s->has_vnet_hdr && !s->using_vnet_hdr) { | |
1415 | return tap_receive_raw(vc, buf, size); | |
1416 | } | |
1417 | ||
1418 | iov[0].iov_base = (char *)buf; | |
1419 | iov[0].iov_len = size; | |
1420 | ||
1421 | return tap_write_packet(s, iov, 1); | |
1422 | } | |
1423 | ||
1424 | static int tap_can_send(void *opaque) | |
1425 | { | |
1426 | TAPState *s = opaque; | |
1427 | ||
1428 | return qemu_can_send_packet(s->vc); | |
1429 | } | |
1430 | ||
1431 | #ifdef __sun__ | |
1432 | static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen) | |
1433 | { | |
1434 | struct strbuf sbuf; | |
1435 | int f = 0; | |
1436 | ||
1437 | sbuf.maxlen = maxlen; | |
1438 | sbuf.buf = (char *)buf; | |
1439 | ||
1440 | return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1; | |
1441 | } | |
1442 | #else | |
1443 | static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen) | |
1444 | { | |
1445 | return read(tapfd, buf, maxlen); | |
1446 | } | |
1447 | #endif | |
1448 | ||
1449 | static void tap_send_completed(VLANClientState *vc, ssize_t len) | |
1450 | { | |
1451 | TAPState *s = vc->opaque; | |
1452 | tap_read_poll(s, 1); | |
1453 | } | |
1454 | ||
1455 | static void tap_send(void *opaque) | |
1456 | { | |
1457 | TAPState *s = opaque; | |
1458 | int size; | |
1459 | ||
1460 | do { | |
1461 | uint8_t *buf = s->buf; | |
1462 | ||
1463 | size = tap_read_packet(s->fd, s->buf, sizeof(s->buf)); | |
1464 | if (size <= 0) { | |
1465 | break; | |
1466 | } | |
1467 | ||
1468 | if (s->has_vnet_hdr && !s->using_vnet_hdr) { | |
1469 | buf += sizeof(struct virtio_net_hdr); | |
1470 | size -= sizeof(struct virtio_net_hdr); | |
1471 | } | |
1472 | ||
1473 | size = qemu_send_packet_async(s->vc, buf, size, tap_send_completed); | |
1474 | if (size == 0) { | |
1475 | tap_read_poll(s, 0); | |
1476 | } | |
1477 | } while (size > 0); | |
1478 | } | |
1479 | ||
1480 | /* sndbuf should be set to a value lower than the tx queue | |
1481 | * capacity of any destination network interface. | |
1482 | * Ethernet NICs generally have txqueuelen=1000, so 1Mb is | |
1483 | * a good default, given a 1500 byte MTU. | |
1484 | */ | |
1485 | #define TAP_DEFAULT_SNDBUF 1024*1024 | |
1486 | ||
1487 | static int tap_set_sndbuf(TAPState *s, QemuOpts *opts) | |
1488 | { | |
1489 | int sndbuf; | |
1490 | ||
1491 | sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF); | |
1492 | if (!sndbuf) { | |
1493 | sndbuf = INT_MAX; | |
1494 | } | |
1495 | ||
1496 | if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) { | |
1497 | qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno)); | |
1498 | return -1; | |
1499 | } | |
1500 | return 0; | |
1501 | } | |
1502 | ||
1503 | int tap_has_ufo(VLANClientState *vc) | |
1504 | { | |
1505 | TAPState *s = vc->opaque; | |
1506 | ||
1507 | assert(vc->type == NET_CLIENT_TYPE_TAP); | |
1508 | ||
1509 | return s->has_ufo; | |
1510 | } | |
1511 | ||
1512 | int tap_has_vnet_hdr(VLANClientState *vc) | |
1513 | { | |
1514 | TAPState *s = vc->opaque; | |
1515 | ||
1516 | assert(vc->type == NET_CLIENT_TYPE_TAP); | |
1517 | ||
1518 | return s->has_vnet_hdr; | |
1519 | } | |
1520 | ||
1521 | void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr) | |
1522 | { | |
1523 | TAPState *s = vc->opaque; | |
1524 | ||
1525 | using_vnet_hdr = using_vnet_hdr != 0; | |
1526 | ||
1527 | assert(vc->type == NET_CLIENT_TYPE_TAP); | |
1528 | assert(s->has_vnet_hdr == using_vnet_hdr); | |
1529 | ||
1530 | s->using_vnet_hdr = using_vnet_hdr; | |
1531 | } | |
1532 | ||
1533 | static int tap_probe_vnet_hdr(int fd) | |
1534 | { | |
1535 | struct ifreq ifr; | |
1536 | ||
1537 | if (ioctl(fd, TUNGETIFF, &ifr) != 0) { | |
1538 | qemu_error("TUNGETIFF ioctl() failed: %s\n", strerror(errno)); | |
1539 | return 0; | |
1540 | } | |
1541 | ||
1542 | return ifr.ifr_flags & IFF_VNET_HDR; | |
1543 | } | |
1544 | ||
1545 | void tap_set_offload(VLANClientState *vc, int csum, int tso4, | |
1546 | int tso6, int ecn, int ufo) | |
1547 | { | |
1548 | TAPState *s = vc->opaque; | |
1549 | unsigned int offload = 0; | |
1550 | ||
1551 | if (csum) { | |
1552 | offload |= TUN_F_CSUM; | |
1553 | if (tso4) | |
1554 | offload |= TUN_F_TSO4; | |
1555 | if (tso6) | |
1556 | offload |= TUN_F_TSO6; | |
1557 | if ((tso4 || tso6) && ecn) | |
1558 | offload |= TUN_F_TSO_ECN; | |
1559 | if (ufo) | |
1560 | offload |= TUN_F_UFO; | |
1561 | } | |
1562 | ||
1563 | if (ioctl(s->fd, TUNSETOFFLOAD, offload) != 0) { | |
1564 | offload &= ~TUN_F_UFO; | |
1565 | if (ioctl(s->fd, TUNSETOFFLOAD, offload) != 0) { | |
1566 | fprintf(stderr, "TUNSETOFFLOAD ioctl() failed: %s\n", | |
1567 | strerror(errno)); | |
1568 | } | |
1569 | } | |
1570 | } | |
1571 | ||
1572 | static void tap_cleanup(VLANClientState *vc) | |
1573 | { | |
1574 | TAPState *s = vc->opaque; | |
1575 | ||
1576 | qemu_purge_queued_packets(vc); | |
1577 | ||
1578 | if (s->down_script[0]) | |
1579 | launch_script(s->down_script, s->down_script_arg, s->fd); | |
1580 | ||
1581 | tap_read_poll(s, 0); | |
1582 | tap_write_poll(s, 0); | |
1583 | close(s->fd); | |
1584 | qemu_free(s); | |
1585 | } | |
1586 | ||
1587 | /* fd support */ | |
1588 | ||
1589 | static TAPState *net_tap_fd_init(VLANState *vlan, | |
1590 | const char *model, | |
1591 | const char *name, | |
1592 | int fd, | |
1593 | int vnet_hdr) | |
1594 | { | |
1595 | TAPState *s; | |
1596 | unsigned int offload; | |
1597 | ||
1598 | s = qemu_mallocz(sizeof(TAPState)); | |
1599 | s->fd = fd; | |
1600 | s->has_vnet_hdr = vnet_hdr != 0; | |
1601 | s->using_vnet_hdr = 0; | |
1602 | s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_TAP, | |
1603 | vlan, NULL, model, name, NULL, | |
1604 | tap_receive, tap_receive_raw, | |
1605 | tap_receive_iov, tap_cleanup, s); | |
1606 | s->has_ufo = 0; | |
1607 | /* Check if tap supports UFO */ | |
1608 | offload = TUN_F_CSUM | TUN_F_UFO; | |
1609 | if (ioctl(s->fd, TUNSETOFFLOAD, offload) == 0) | |
1610 | s->has_ufo = 1; | |
1611 | tap_set_offload(s->vc, 0, 0, 0, 0, 0); | |
1612 | tap_read_poll(s, 1); | |
1613 | return s; | |
1614 | } | |
1615 | ||
1616 | #if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__) | |
1617 | static int tap_open(char *ifname, int ifname_size, | |
1618 | int *vnet_hdr, int vnet_hdr_required) | |
1619 | { | |
1620 | int fd; | |
1621 | char *dev; | |
1622 | struct stat s; | |
1623 | ||
1624 | TFR(fd = open("/dev/tap", O_RDWR)); | |
1625 | if (fd < 0) { | |
1626 | fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n"); | |
1627 | return -1; | |
1628 | } | |
1629 | ||
1630 | fstat(fd, &s); | |
1631 | dev = devname(s.st_rdev, S_IFCHR); | |
1632 | pstrcpy(ifname, ifname_size, dev); | |
1633 | ||
1634 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
1635 | return fd; | |
1636 | } | |
1637 | #elif defined(__sun__) | |
1638 | #define TUNNEWPPA (('T'<<16) | 0x0001) | |
1639 | /* | |
1640 | * Allocate TAP device, returns opened fd. | |
1641 | * Stores dev name in the first arg(must be large enough). | |
1642 | */ | |
1643 | static int tap_alloc(char *dev, size_t dev_size) | |
1644 | { | |
1645 | int tap_fd, if_fd, ppa = -1; | |
1646 | static int ip_fd = 0; | |
1647 | char *ptr; | |
1648 | ||
1649 | static int arp_fd = 0; | |
1650 | int ip_muxid, arp_muxid; | |
1651 | struct strioctl strioc_if, strioc_ppa; | |
1652 | int link_type = I_PLINK;; | |
1653 | struct lifreq ifr; | |
1654 | char actual_name[32] = ""; | |
1655 | ||
1656 | memset(&ifr, 0x0, sizeof(ifr)); | |
1657 | ||
1658 | if( *dev ){ | |
1659 | ptr = dev; | |
1660 | while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++; | |
1661 | ppa = atoi(ptr); | |
1662 | } | |
1663 | ||
1664 | /* Check if IP device was opened */ | |
1665 | if( ip_fd ) | |
1666 | close(ip_fd); | |
1667 | ||
1668 | TFR(ip_fd = open("/dev/udp", O_RDWR, 0)); | |
1669 | if (ip_fd < 0) { | |
1670 | syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)"); | |
1671 | return -1; | |
1672 | } | |
1673 | ||
1674 | TFR(tap_fd = open("/dev/tap", O_RDWR, 0)); | |
1675 | if (tap_fd < 0) { | |
1676 | syslog(LOG_ERR, "Can't open /dev/tap"); | |
1677 | return -1; | |
1678 | } | |
1679 | ||
1680 | /* Assign a new PPA and get its unit number. */ | |
1681 | strioc_ppa.ic_cmd = TUNNEWPPA; | |
1682 | strioc_ppa.ic_timout = 0; | |
1683 | strioc_ppa.ic_len = sizeof(ppa); | |
1684 | strioc_ppa.ic_dp = (char *)&ppa; | |
1685 | if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0) | |
1686 | syslog (LOG_ERR, "Can't assign new interface"); | |
1687 | ||
1688 | TFR(if_fd = open("/dev/tap", O_RDWR, 0)); | |
1689 | if (if_fd < 0) { | |
1690 | syslog(LOG_ERR, "Can't open /dev/tap (2)"); | |
1691 | return -1; | |
1692 | } | |
1693 | if(ioctl(if_fd, I_PUSH, "ip") < 0){ | |
1694 | syslog(LOG_ERR, "Can't push IP module"); | |
1695 | return -1; | |
1696 | } | |
1697 | ||
1698 | if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) | |
1699 | syslog(LOG_ERR, "Can't get flags\n"); | |
1700 | ||
1701 | snprintf (actual_name, 32, "tap%d", ppa); | |
1702 | pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name); | |
1703 | ||
1704 | ifr.lifr_ppa = ppa; | |
1705 | /* Assign ppa according to the unit number returned by tun device */ | |
1706 | ||
1707 | if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0) | |
1708 | syslog (LOG_ERR, "Can't set PPA %d", ppa); | |
1709 | if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0) | |
1710 | syslog (LOG_ERR, "Can't get flags\n"); | |
1711 | /* Push arp module to if_fd */ | |
1712 | if (ioctl (if_fd, I_PUSH, "arp") < 0) | |
1713 | syslog (LOG_ERR, "Can't push ARP module (2)"); | |
1714 | ||
1715 | /* Push arp module to ip_fd */ | |
1716 | if (ioctl (ip_fd, I_POP, NULL) < 0) | |
1717 | syslog (LOG_ERR, "I_POP failed\n"); | |
1718 | if (ioctl (ip_fd, I_PUSH, "arp") < 0) | |
1719 | syslog (LOG_ERR, "Can't push ARP module (3)\n"); | |
1720 | /* Open arp_fd */ | |
1721 | TFR(arp_fd = open ("/dev/tap", O_RDWR, 0)); | |
1722 | if (arp_fd < 0) | |
1723 | syslog (LOG_ERR, "Can't open %s\n", "/dev/tap"); | |
1724 | ||
1725 | /* Set ifname to arp */ | |
1726 | strioc_if.ic_cmd = SIOCSLIFNAME; | |
1727 | strioc_if.ic_timout = 0; | |
1728 | strioc_if.ic_len = sizeof(ifr); | |
1729 | strioc_if.ic_dp = (char *)𝔦 | |
1730 | if (ioctl(arp_fd, I_STR, &strioc_if) < 0){ | |
1731 | syslog (LOG_ERR, "Can't set ifname to arp\n"); | |
1732 | } | |
1733 | ||
1734 | if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){ | |
1735 | syslog(LOG_ERR, "Can't link TAP device to IP"); | |
1736 | return -1; | |
1737 | } | |
1738 | ||
1739 | if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0) | |
1740 | syslog (LOG_ERR, "Can't link TAP device to ARP"); | |
1741 | ||
1742 | close (if_fd); | |
1743 | ||
1744 | memset(&ifr, 0x0, sizeof(ifr)); | |
1745 | pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name); | |
1746 | ifr.lifr_ip_muxid = ip_muxid; | |
1747 | ifr.lifr_arp_muxid = arp_muxid; | |
1748 | ||
1749 | if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0) | |
1750 | { | |
1751 | ioctl (ip_fd, I_PUNLINK , arp_muxid); | |
1752 | ioctl (ip_fd, I_PUNLINK, ip_muxid); | |
1753 | syslog (LOG_ERR, "Can't set multiplexor id"); | |
1754 | } | |
1755 | ||
1756 | snprintf(dev, dev_size, "tap%d", ppa); | |
1757 | return tap_fd; | |
1758 | } | |
1759 | ||
1760 | static int tap_open(char *ifname, int ifname_size, | |
1761 | int *vnet_hdr, int vnet_hdr_required) | |
1762 | { | |
1763 | char dev[10]=""; | |
1764 | int fd; | |
1765 | if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){ | |
1766 | fprintf(stderr, "Cannot allocate TAP device\n"); | |
1767 | return -1; | |
1768 | } | |
1769 | pstrcpy(ifname, ifname_size, dev); | |
1770 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
1771 | return fd; | |
1772 | } | |
1773 | #elif defined (_AIX) | |
1774 | static int tap_open(char *ifname, int ifname_size, | |
1775 | int *vnet_hdr, int vnet_hdr_required) | |
1776 | { | |
1777 | fprintf (stderr, "no tap on AIX\n"); | |
1778 | return -1; | |
1779 | } | |
1780 | #else | |
1781 | static int tap_open(char *ifname, int ifname_size, | |
1782 | int *vnet_hdr, int vnet_hdr_required) | |
1783 | { | |
1784 | struct ifreq ifr; | |
1785 | int fd, ret; | |
1786 | ||
1787 | TFR(fd = open("/dev/net/tun", O_RDWR)); | |
1788 | if (fd < 0) { | |
1789 | fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n"); | |
1790 | return -1; | |
1791 | } | |
1792 | memset(&ifr, 0, sizeof(ifr)); | |
1793 | ifr.ifr_flags = IFF_TAP | IFF_NO_PI; | |
1794 | ||
1795 | if (*vnet_hdr) { | |
1796 | unsigned int features; | |
1797 | ||
1798 | if (ioctl(fd, TUNGETFEATURES, &features) == 0 && | |
1799 | features & IFF_VNET_HDR) { | |
1800 | *vnet_hdr = 1; | |
1801 | ifr.ifr_flags |= IFF_VNET_HDR; | |
1802 | } | |
1803 | ||
1804 | if (vnet_hdr_required && !*vnet_hdr) { | |
1805 | qemu_error("vnet_hdr=1 requested, but no kernel " | |
1806 | "support for IFF_VNET_HDR available"); | |
1807 | close(fd); | |
1808 | return -1; | |
1809 | } | |
1810 | } | |
1811 | ||
1812 | if (ifname[0] != '\0') | |
1813 | pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname); | |
1814 | else | |
1815 | pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d"); | |
1816 | ret = ioctl(fd, TUNSETIFF, (void *) &ifr); | |
1817 | if (ret != 0) { | |
1818 | fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n"); | |
1819 | close(fd); | |
1820 | return -1; | |
1821 | } | |
1822 | pstrcpy(ifname, ifname_size, ifr.ifr_name); | |
1823 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
1824 | return fd; | |
1825 | } | |
1826 | #endif | |
1827 | ||
1828 | static int launch_script(const char *setup_script, const char *ifname, int fd) | |
1829 | { | |
1830 | sigset_t oldmask, mask; | |
1831 | int pid, status; | |
1832 | char *args[3]; | |
1833 | char **parg; | |
1834 | ||
1835 | sigemptyset(&mask); | |
1836 | sigaddset(&mask, SIGCHLD); | |
1837 | sigprocmask(SIG_BLOCK, &mask, &oldmask); | |
1838 | ||
1839 | /* try to launch network script */ | |
1840 | pid = fork(); | |
1841 | if (pid == 0) { | |
1842 | int open_max = sysconf(_SC_OPEN_MAX), i; | |
1843 | ||
1844 | for (i = 0; i < open_max; i++) { | |
1845 | if (i != STDIN_FILENO && | |
1846 | i != STDOUT_FILENO && | |
1847 | i != STDERR_FILENO && | |
1848 | i != fd) { | |
1849 | close(i); | |
1850 | } | |
1851 | } | |
1852 | parg = args; | |
1853 | *parg++ = (char *)setup_script; | |
1854 | *parg++ = (char *)ifname; | |
1855 | *parg++ = NULL; | |
1856 | execv(setup_script, args); | |
1857 | _exit(1); | |
1858 | } else if (pid > 0) { | |
1859 | while (waitpid(pid, &status, 0) != pid) { | |
1860 | /* loop */ | |
1861 | } | |
1862 | sigprocmask(SIG_SETMASK, &oldmask, NULL); | |
1863 | ||
1864 | if (WIFEXITED(status) && WEXITSTATUS(status) == 0) { | |
1865 | return 0; | |
1866 | } | |
1867 | } | |
1868 | fprintf(stderr, "%s: could not launch network script\n", setup_script); | |
1869 | return -1; | |
1870 | } | |
1871 | ||
1872 | static int net_tap_init(QemuOpts *opts, int *vnet_hdr) | |
1873 | { | |
1874 | int fd, vnet_hdr_required; | |
1875 | char ifname[128] = {0,}; | |
1876 | const char *setup_script; | |
1877 | ||
1878 | if (qemu_opt_get(opts, "ifname")) { | |
1879 | pstrcpy(ifname, sizeof(ifname), qemu_opt_get(opts, "ifname")); | |
1880 | } | |
1881 | ||
1882 | *vnet_hdr = qemu_opt_get_bool(opts, "vnet_hdr", 1); | |
1883 | if (qemu_opt_get(opts, "vnet_hdr")) { | |
1884 | vnet_hdr_required = *vnet_hdr; | |
1885 | } else { | |
1886 | vnet_hdr_required = 0; | |
1887 | } | |
1888 | ||
1889 | TFR(fd = tap_open(ifname, sizeof(ifname), vnet_hdr, vnet_hdr_required)); | |
1890 | if (fd < 0) { | |
1891 | return -1; | |
1892 | } | |
1893 | ||
1894 | setup_script = qemu_opt_get(opts, "script"); | |
1895 | if (setup_script && | |
1896 | setup_script[0] != '\0' && | |
1897 | strcmp(setup_script, "no") != 0 && | |
1898 | launch_script(setup_script, ifname, fd)) { | |
1899 | close(fd); | |
1900 | return -1; | |
1901 | } | |
1902 | ||
1903 | qemu_opt_set(opts, "ifname", ifname); | |
1904 | ||
1905 | return fd; | |
1906 | } | |
1907 | ||
1908 | #endif /* !defined(_WIN32) && !defined(_AIX) */ | |
1909 | ||
1910 | #if defined(CONFIG_VDE) | |
1911 | typedef struct VDEState { | |
1912 | VLANClientState *vc; | |
1913 | VDECONN *vde; | |
1914 | } VDEState; | |
1915 | ||
1916 | static void vde_to_qemu(void *opaque) | |
1917 | { | |
1918 | VDEState *s = opaque; | |
1919 | uint8_t buf[4096]; | |
1920 | int size; | |
1921 | ||
1922 | size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0); | |
1923 | if (size > 0) { | |
1924 | qemu_send_packet(s->vc, buf, size); | |
1925 | } | |
1926 | } | |
1927 | ||
1928 | static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size) | |
1929 | { | |
1930 | VDEState *s = vc->opaque; | |
1931 | ssize_t ret; | |
1932 | ||
1933 | do { | |
1934 | ret = vde_send(s->vde, (const char *)buf, size, 0); | |
1935 | } while (ret < 0 && errno == EINTR); | |
1936 | ||
1937 | return ret; | |
1938 | } | |
1939 | ||
1940 | static void vde_cleanup(VLANClientState *vc) | |
1941 | { | |
1942 | VDEState *s = vc->opaque; | |
1943 | qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL); | |
1944 | vde_close(s->vde); | |
1945 | qemu_free(s); | |
1946 | } | |
1947 | ||
1948 | static int net_vde_init(VLANState *vlan, const char *model, | |
1949 | const char *name, const char *sock, | |
1950 | int port, const char *group, int mode) | |
1951 | { | |
1952 | VDEState *s; | |
1953 | char *init_group = (char *)group; | |
1954 | char *init_sock = (char *)sock; | |
1955 | ||
1956 | struct vde_open_args args = { | |
1957 | .port = port, | |
1958 | .group = init_group, | |
1959 | .mode = mode, | |
1960 | }; | |
1961 | ||
1962 | s = qemu_mallocz(sizeof(VDEState)); | |
1963 | s->vde = vde_open(init_sock, (char *)"QEMU", &args); | |
1964 | if (!s->vde){ | |
1965 | free(s); | |
1966 | return -1; | |
1967 | } | |
1968 | s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_VDE, | |
1969 | vlan, NULL, model, name, NULL, | |
1970 | vde_receive, NULL, NULL, | |
1971 | vde_cleanup, s); | |
1972 | qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s); | |
1973 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d", | |
1974 | sock, vde_datafd(s->vde)); | |
1975 | return 0; | |
1976 | } | |
1977 | #endif | |
1978 | ||
1979 | /* network connection */ | |
1980 | typedef struct NetSocketState { | |
1981 | VLANClientState *vc; | |
1982 | int fd; | |
1983 | int state; /* 0 = getting length, 1 = getting data */ | |
1984 | unsigned int index; | |
1985 | unsigned int packet_len; | |
1986 | uint8_t buf[4096]; | |
1987 | struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ | |
1988 | } NetSocketState; | |
1989 | ||
1990 | typedef struct NetSocketListenState { | |
1991 | VLANState *vlan; | |
1992 | char *model; | |
1993 | char *name; | |
1994 | int fd; | |
1995 | } NetSocketListenState; | |
1996 | ||
1997 | /* XXX: we consider we can send the whole packet without blocking */ | |
1998 | static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size) | |
1999 | { | |
2000 | NetSocketState *s = vc->opaque; | |
2001 | uint32_t len; | |
2002 | len = htonl(size); | |
2003 | ||
2004 | send_all(s->fd, (const uint8_t *)&len, sizeof(len)); | |
2005 | return send_all(s->fd, buf, size); | |
2006 | } | |
2007 | ||
2008 | static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size) | |
2009 | { | |
2010 | NetSocketState *s = vc->opaque; | |
2011 | ||
2012 | return sendto(s->fd, (const void *)buf, size, 0, | |
2013 | (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst)); | |
2014 | } | |
2015 | ||
2016 | static void net_socket_send(void *opaque) | |
2017 | { | |
2018 | NetSocketState *s = opaque; | |
2019 | int size, err; | |
2020 | unsigned l; | |
2021 | uint8_t buf1[4096]; | |
2022 | const uint8_t *buf; | |
2023 | ||
2024 | size = recv(s->fd, (void *)buf1, sizeof(buf1), 0); | |
2025 | if (size < 0) { | |
2026 | err = socket_error(); | |
2027 | if (err != EWOULDBLOCK) | |
2028 | goto eoc; | |
2029 | } else if (size == 0) { | |
2030 | /* end of connection */ | |
2031 | eoc: | |
2032 | qemu_set_fd_handler(s->fd, NULL, NULL, NULL); | |
2033 | closesocket(s->fd); | |
2034 | return; | |
2035 | } | |
2036 | buf = buf1; | |
2037 | while (size > 0) { | |
2038 | /* reassemble a packet from the network */ | |
2039 | switch(s->state) { | |
2040 | case 0: | |
2041 | l = 4 - s->index; | |
2042 | if (l > size) | |
2043 | l = size; | |
2044 | memcpy(s->buf + s->index, buf, l); | |
2045 | buf += l; | |
2046 | size -= l; | |
2047 | s->index += l; | |
2048 | if (s->index == 4) { | |
2049 | /* got length */ | |
2050 | s->packet_len = ntohl(*(uint32_t *)s->buf); | |
2051 | s->index = 0; | |
2052 | s->state = 1; | |
2053 | } | |
2054 | break; | |
2055 | case 1: | |
2056 | l = s->packet_len - s->index; | |
2057 | if (l > size) | |
2058 | l = size; | |
2059 | if (s->index + l <= sizeof(s->buf)) { | |
2060 | memcpy(s->buf + s->index, buf, l); | |
2061 | } else { | |
2062 | fprintf(stderr, "serious error: oversized packet received," | |
2063 | "connection terminated.\n"); | |
2064 | s->state = 0; | |
2065 | goto eoc; | |
2066 | } | |
2067 | ||
2068 | s->index += l; | |
2069 | buf += l; | |
2070 | size -= l; | |
2071 | if (s->index >= s->packet_len) { | |
2072 | qemu_send_packet(s->vc, s->buf, s->packet_len); | |
2073 | s->index = 0; | |
2074 | s->state = 0; | |
2075 | } | |
2076 | break; | |
2077 | } | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | static void net_socket_send_dgram(void *opaque) | |
2082 | { | |
2083 | NetSocketState *s = opaque; | |
2084 | int size; | |
2085 | ||
2086 | size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0); | |
2087 | if (size < 0) | |
2088 | return; | |
2089 | if (size == 0) { | |
2090 | /* end of connection */ | |
2091 | qemu_set_fd_handler(s->fd, NULL, NULL, NULL); | |
2092 | return; | |
2093 | } | |
2094 | qemu_send_packet(s->vc, s->buf, size); | |
2095 | } | |
2096 | ||
2097 | static int net_socket_mcast_create(struct sockaddr_in *mcastaddr) | |
2098 | { | |
2099 | struct ip_mreq imr; | |
2100 | int fd; | |
2101 | int val, ret; | |
2102 | if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) { | |
2103 | fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n", | |
2104 | inet_ntoa(mcastaddr->sin_addr), | |
2105 | (int)ntohl(mcastaddr->sin_addr.s_addr)); | |
2106 | return -1; | |
2107 | ||
2108 | } | |
2109 | fd = socket(PF_INET, SOCK_DGRAM, 0); | |
2110 | if (fd < 0) { | |
2111 | perror("socket(PF_INET, SOCK_DGRAM)"); | |
2112 | return -1; | |
2113 | } | |
2114 | ||
2115 | val = 1; | |
2116 | ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, | |
2117 | (const char *)&val, sizeof(val)); | |
2118 | if (ret < 0) { | |
2119 | perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)"); | |
2120 | goto fail; | |
2121 | } | |
2122 | ||
2123 | ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); | |
2124 | if (ret < 0) { | |
2125 | perror("bind"); | |
2126 | goto fail; | |
2127 | } | |
2128 | ||
2129 | /* Add host to multicast group */ | |
2130 | imr.imr_multiaddr = mcastaddr->sin_addr; | |
2131 | imr.imr_interface.s_addr = htonl(INADDR_ANY); | |
2132 | ||
2133 | ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, | |
2134 | (const char *)&imr, sizeof(struct ip_mreq)); | |
2135 | if (ret < 0) { | |
2136 | perror("setsockopt(IP_ADD_MEMBERSHIP)"); | |
2137 | goto fail; | |
2138 | } | |
2139 | ||
2140 | /* Force mcast msgs to loopback (eg. several QEMUs in same host */ | |
2141 | val = 1; | |
2142 | ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, | |
2143 | (const char *)&val, sizeof(val)); | |
2144 | if (ret < 0) { | |
2145 | perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)"); | |
2146 | goto fail; | |
2147 | } | |
2148 | ||
2149 | socket_set_nonblock(fd); | |
2150 | return fd; | |
2151 | fail: | |
2152 | if (fd >= 0) | |
2153 | closesocket(fd); | |
2154 | return -1; | |
2155 | } | |
2156 | ||
2157 | static void net_socket_cleanup(VLANClientState *vc) | |
2158 | { | |
2159 | NetSocketState *s = vc->opaque; | |
2160 | qemu_set_fd_handler(s->fd, NULL, NULL, NULL); | |
2161 | close(s->fd); | |
2162 | qemu_free(s); | |
2163 | } | |
2164 | ||
2165 | static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan, | |
2166 | const char *model, | |
2167 | const char *name, | |
2168 | int fd, int is_connected) | |
2169 | { | |
2170 | struct sockaddr_in saddr; | |
2171 | int newfd; | |
2172 | socklen_t saddr_len; | |
2173 | NetSocketState *s; | |
2174 | ||
2175 | /* fd passed: multicast: "learn" dgram_dst address from bound address and save it | |
2176 | * Because this may be "shared" socket from a "master" process, datagrams would be recv() | |
2177 | * by ONLY ONE process: we must "clone" this dgram socket --jjo | |
2178 | */ | |
2179 | ||
2180 | if (is_connected) { | |
2181 | if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) { | |
2182 | /* must be bound */ | |
2183 | if (saddr.sin_addr.s_addr==0) { | |
2184 | fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n", | |
2185 | fd); | |
2186 | return NULL; | |
2187 | } | |
2188 | /* clone dgram socket */ | |
2189 | newfd = net_socket_mcast_create(&saddr); | |
2190 | if (newfd < 0) { | |
2191 | /* error already reported by net_socket_mcast_create() */ | |
2192 | close(fd); | |
2193 | return NULL; | |
2194 | } | |
2195 | /* clone newfd to fd, close newfd */ | |
2196 | dup2(newfd, fd); | |
2197 | close(newfd); | |
2198 | ||
2199 | } else { | |
2200 | fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n", | |
2201 | fd, strerror(errno)); | |
2202 | return NULL; | |
2203 | } | |
2204 | } | |
2205 | ||
2206 | s = qemu_mallocz(sizeof(NetSocketState)); | |
2207 | s->fd = fd; | |
2208 | ||
2209 | s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET, | |
2210 | vlan, NULL, model, name, NULL, | |
2211 | net_socket_receive_dgram, NULL, NULL, | |
2212 | net_socket_cleanup, s); | |
2213 | qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s); | |
2214 | ||
2215 | /* mcast: save bound address as dst */ | |
2216 | if (is_connected) s->dgram_dst=saddr; | |
2217 | ||
2218 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
2219 | "socket: fd=%d (%s mcast=%s:%d)", | |
2220 | fd, is_connected? "cloned" : "", | |
2221 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
2222 | return s; | |
2223 | } | |
2224 | ||
2225 | static void net_socket_connect(void *opaque) | |
2226 | { | |
2227 | NetSocketState *s = opaque; | |
2228 | qemu_set_fd_handler(s->fd, net_socket_send, NULL, s); | |
2229 | } | |
2230 | ||
2231 | static NetSocketState *net_socket_fd_init_stream(VLANState *vlan, | |
2232 | const char *model, | |
2233 | const char *name, | |
2234 | int fd, int is_connected) | |
2235 | { | |
2236 | NetSocketState *s; | |
2237 | s = qemu_mallocz(sizeof(NetSocketState)); | |
2238 | s->fd = fd; | |
2239 | s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET, | |
2240 | vlan, NULL, model, name, NULL, | |
2241 | net_socket_receive, NULL, NULL, | |
2242 | net_socket_cleanup, s); | |
2243 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
2244 | "socket: fd=%d", fd); | |
2245 | if (is_connected) { | |
2246 | net_socket_connect(s); | |
2247 | } else { | |
2248 | qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s); | |
2249 | } | |
2250 | return s; | |
2251 | } | |
2252 | ||
2253 | static NetSocketState *net_socket_fd_init(VLANState *vlan, | |
2254 | const char *model, const char *name, | |
2255 | int fd, int is_connected) | |
2256 | { | |
2257 | int so_type = -1, optlen=sizeof(so_type); | |
2258 | ||
2259 | if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, | |
2260 | (socklen_t *)&optlen)< 0) { | |
2261 | fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd); | |
2262 | return NULL; | |
2263 | } | |
2264 | switch(so_type) { | |
2265 | case SOCK_DGRAM: | |
2266 | return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected); | |
2267 | case SOCK_STREAM: | |
2268 | return net_socket_fd_init_stream(vlan, model, name, fd, is_connected); | |
2269 | default: | |
2270 | /* who knows ... this could be a eg. a pty, do warn and continue as stream */ | |
2271 | fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd); | |
2272 | return net_socket_fd_init_stream(vlan, model, name, fd, is_connected); | |
2273 | } | |
2274 | return NULL; | |
2275 | } | |
2276 | ||
2277 | static void net_socket_accept(void *opaque) | |
2278 | { | |
2279 | NetSocketListenState *s = opaque; | |
2280 | NetSocketState *s1; | |
2281 | struct sockaddr_in saddr; | |
2282 | socklen_t len; | |
2283 | int fd; | |
2284 | ||
2285 | for(;;) { | |
2286 | len = sizeof(saddr); | |
2287 | fd = accept(s->fd, (struct sockaddr *)&saddr, &len); | |
2288 | if (fd < 0 && errno != EINTR) { | |
2289 | return; | |
2290 | } else if (fd >= 0) { | |
2291 | break; | |
2292 | } | |
2293 | } | |
2294 | s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1); | |
2295 | if (!s1) { | |
2296 | closesocket(fd); | |
2297 | } else { | |
2298 | snprintf(s1->vc->info_str, sizeof(s1->vc->info_str), | |
2299 | "socket: connection from %s:%d", | |
2300 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
2301 | } | |
2302 | } | |
2303 | ||
2304 | static int net_socket_listen_init(VLANState *vlan, | |
2305 | const char *model, | |
2306 | const char *name, | |
2307 | const char *host_str) | |
2308 | { | |
2309 | NetSocketListenState *s; | |
2310 | int fd, val, ret; | |
2311 | struct sockaddr_in saddr; | |
2312 | ||
2313 | if (parse_host_port(&saddr, host_str) < 0) | |
2314 | return -1; | |
2315 | ||
2316 | s = qemu_mallocz(sizeof(NetSocketListenState)); | |
2317 | ||
2318 | fd = socket(PF_INET, SOCK_STREAM, 0); | |
2319 | if (fd < 0) { | |
2320 | perror("socket"); | |
2321 | return -1; | |
2322 | } | |
2323 | socket_set_nonblock(fd); | |
2324 | ||
2325 | /* allow fast reuse */ | |
2326 | val = 1; | |
2327 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val)); | |
2328 | ||
2329 | ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); | |
2330 | if (ret < 0) { | |
2331 | perror("bind"); | |
2332 | return -1; | |
2333 | } | |
2334 | ret = listen(fd, 0); | |
2335 | if (ret < 0) { | |
2336 | perror("listen"); | |
2337 | return -1; | |
2338 | } | |
2339 | s->vlan = vlan; | |
2340 | s->model = qemu_strdup(model); | |
2341 | s->name = name ? qemu_strdup(name) : NULL; | |
2342 | s->fd = fd; | |
2343 | qemu_set_fd_handler(fd, net_socket_accept, NULL, s); | |
2344 | return 0; | |
2345 | } | |
2346 | ||
2347 | static int net_socket_connect_init(VLANState *vlan, | |
2348 | const char *model, | |
2349 | const char *name, | |
2350 | const char *host_str) | |
2351 | { | |
2352 | NetSocketState *s; | |
2353 | int fd, connected, ret, err; | |
2354 | struct sockaddr_in saddr; | |
2355 | ||
2356 | if (parse_host_port(&saddr, host_str) < 0) | |
2357 | return -1; | |
2358 | ||
2359 | fd = socket(PF_INET, SOCK_STREAM, 0); | |
2360 | if (fd < 0) { | |
2361 | perror("socket"); | |
2362 | return -1; | |
2363 | } | |
2364 | socket_set_nonblock(fd); | |
2365 | ||
2366 | connected = 0; | |
2367 | for(;;) { | |
2368 | ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); | |
2369 | if (ret < 0) { | |
2370 | err = socket_error(); | |
2371 | if (err == EINTR || err == EWOULDBLOCK) { | |
2372 | } else if (err == EINPROGRESS) { | |
2373 | break; | |
2374 | #ifdef _WIN32 | |
2375 | } else if (err == WSAEALREADY) { | |
2376 | break; | |
2377 | #endif | |
2378 | } else { | |
2379 | perror("connect"); | |
2380 | closesocket(fd); | |
2381 | return -1; | |
2382 | } | |
2383 | } else { | |
2384 | connected = 1; | |
2385 | break; | |
2386 | } | |
2387 | } | |
2388 | s = net_socket_fd_init(vlan, model, name, fd, connected); | |
2389 | if (!s) | |
2390 | return -1; | |
2391 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
2392 | "socket: connect to %s:%d", | |
2393 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
2394 | return 0; | |
2395 | } | |
2396 | ||
2397 | static int net_socket_mcast_init(VLANState *vlan, | |
2398 | const char *model, | |
2399 | const char *name, | |
2400 | const char *host_str) | |
2401 | { | |
2402 | NetSocketState *s; | |
2403 | int fd; | |
2404 | struct sockaddr_in saddr; | |
2405 | ||
2406 | if (parse_host_port(&saddr, host_str) < 0) | |
2407 | return -1; | |
2408 | ||
2409 | ||
2410 | fd = net_socket_mcast_create(&saddr); | |
2411 | if (fd < 0) | |
2412 | return -1; | |
2413 | ||
2414 | s = net_socket_fd_init(vlan, model, name, fd, 0); | |
2415 | if (!s) | |
2416 | return -1; | |
2417 | ||
2418 | s->dgram_dst = saddr; | |
2419 | ||
2420 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
2421 | "socket: mcast=%s:%d", | |
2422 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
2423 | return 0; | |
2424 | ||
2425 | } | |
2426 | ||
2427 | typedef struct DumpState { | |
2428 | VLANClientState *pcap_vc; | |
2429 | int fd; | |
2430 | int pcap_caplen; | |
2431 | } DumpState; | |
2432 | ||
2433 | #define PCAP_MAGIC 0xa1b2c3d4 | |
2434 | ||
2435 | struct pcap_file_hdr { | |
2436 | uint32_t magic; | |
2437 | uint16_t version_major; | |
2438 | uint16_t version_minor; | |
2439 | int32_t thiszone; | |
2440 | uint32_t sigfigs; | |
2441 | uint32_t snaplen; | |
2442 | uint32_t linktype; | |
2443 | }; | |
2444 | ||
2445 | struct pcap_sf_pkthdr { | |
2446 | struct { | |
2447 | int32_t tv_sec; | |
2448 | int32_t tv_usec; | |
2449 | } ts; | |
2450 | uint32_t caplen; | |
2451 | uint32_t len; | |
2452 | }; | |
2453 | ||
2454 | static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size) | |
2455 | { | |
2456 | DumpState *s = vc->opaque; | |
2457 | struct pcap_sf_pkthdr hdr; | |
2458 | int64_t ts; | |
2459 | int caplen; | |
2460 | ||
2461 | /* Early return in case of previous error. */ | |
2462 | if (s->fd < 0) { | |
2463 | return size; | |
2464 | } | |
2465 | ||
2466 | ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec()); | |
2467 | caplen = size > s->pcap_caplen ? s->pcap_caplen : size; | |
2468 | ||
2469 | hdr.ts.tv_sec = ts / 1000000; | |
2470 | hdr.ts.tv_usec = ts % 1000000; | |
2471 | hdr.caplen = caplen; | |
2472 | hdr.len = size; | |
2473 | if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) || | |
2474 | write(s->fd, buf, caplen) != caplen) { | |
2475 | qemu_log("-net dump write error - stop dump\n"); | |
2476 | close(s->fd); | |
2477 | s->fd = -1; | |
2478 | } | |
2479 | ||
2480 | return size; | |
2481 | } | |
2482 | ||
2483 | static void net_dump_cleanup(VLANClientState *vc) | |
2484 | { | |
2485 | DumpState *s = vc->opaque; | |
2486 | ||
2487 | close(s->fd); | |
2488 | qemu_free(s); | |
2489 | } | |
2490 | ||
2491 | static int net_dump_init(VLANState *vlan, const char *device, | |
2492 | const char *name, const char *filename, int len) | |
2493 | { | |
2494 | struct pcap_file_hdr hdr; | |
2495 | DumpState *s; | |
2496 | ||
2497 | s = qemu_malloc(sizeof(DumpState)); | |
2498 | ||
2499 | s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644); | |
2500 | if (s->fd < 0) { | |
2501 | qemu_error("-net dump: can't open %s\n", filename); | |
2502 | return -1; | |
2503 | } | |
2504 | ||
2505 | s->pcap_caplen = len; | |
2506 | ||
2507 | hdr.magic = PCAP_MAGIC; | |
2508 | hdr.version_major = 2; | |
2509 | hdr.version_minor = 4; | |
2510 | hdr.thiszone = 0; | |
2511 | hdr.sigfigs = 0; | |
2512 | hdr.snaplen = s->pcap_caplen; | |
2513 | hdr.linktype = 1; | |
2514 | ||
2515 | if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) { | |
2516 | qemu_error("-net dump write error: %s\n", strerror(errno)); | |
2517 | close(s->fd); | |
2518 | qemu_free(s); | |
2519 | return -1; | |
2520 | } | |
2521 | ||
2522 | s->pcap_vc = qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP, | |
2523 | vlan, NULL, device, name, NULL, | |
2524 | dump_receive, NULL, NULL, | |
2525 | net_dump_cleanup, s); | |
2526 | snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str), | |
2527 | "dump to %s (len=%d)", filename, len); | |
2528 | return 0; | |
2529 | } | |
2530 | ||
2531 | /* find or alloc a new VLAN */ | |
2532 | VLANState *qemu_find_vlan(int id, int allocate) | |
2533 | { | |
2534 | VLANState *vlan; | |
2535 | ||
2536 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
2537 | if (vlan->id == id) { | |
2538 | return vlan; | |
2539 | } | |
2540 | } | |
2541 | ||
2542 | if (!allocate) { | |
2543 | return NULL; | |
2544 | } | |
2545 | ||
2546 | vlan = qemu_mallocz(sizeof(VLANState)); | |
2547 | vlan->id = id; | |
2548 | QTAILQ_INIT(&vlan->clients); | |
2549 | ||
2550 | vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet, | |
2551 | qemu_vlan_deliver_packet_iov, | |
2552 | vlan); | |
2553 | ||
2554 | QTAILQ_INSERT_TAIL(&vlans, vlan, next); | |
2555 | ||
2556 | return vlan; | |
2557 | } | |
2558 | ||
2559 | VLANClientState *qemu_find_netdev(const char *id) | |
2560 | { | |
2561 | VLANClientState *vc; | |
2562 | ||
2563 | QTAILQ_FOREACH(vc, &non_vlan_clients, next) { | |
2564 | if (!strcmp(vc->name, id)) { | |
2565 | return vc; | |
2566 | } | |
2567 | } | |
2568 | ||
2569 | return NULL; | |
2570 | } | |
2571 | ||
2572 | static int nic_get_free_idx(void) | |
2573 | { | |
2574 | int index; | |
2575 | ||
2576 | for (index = 0; index < MAX_NICS; index++) | |
2577 | if (!nd_table[index].used) | |
2578 | return index; | |
2579 | return -1; | |
2580 | } | |
2581 | ||
2582 | int qemu_show_nic_models(const char *arg, const char *const *models) | |
2583 | { | |
2584 | int i; | |
2585 | ||
2586 | if (!arg || strcmp(arg, "?")) | |
2587 | return 0; | |
2588 | ||
2589 | fprintf(stderr, "qemu: Supported NIC models: "); | |
2590 | for (i = 0 ; models[i]; i++) | |
2591 | fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); | |
2592 | return 1; | |
2593 | } | |
2594 | ||
2595 | void qemu_check_nic_model(NICInfo *nd, const char *model) | |
2596 | { | |
2597 | const char *models[2]; | |
2598 | ||
2599 | models[0] = model; | |
2600 | models[1] = NULL; | |
2601 | ||
2602 | if (qemu_show_nic_models(nd->model, models)) | |
2603 | exit(0); | |
2604 | if (qemu_find_nic_model(nd, models, model) < 0) | |
2605 | exit(1); | |
2606 | } | |
2607 | ||
2608 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, | |
2609 | const char *default_model) | |
2610 | { | |
2611 | int i; | |
2612 | ||
2613 | if (!nd->model) | |
2614 | nd->model = qemu_strdup(default_model); | |
2615 | ||
2616 | for (i = 0 ; models[i]; i++) { | |
2617 | if (strcmp(nd->model, models[i]) == 0) | |
2618 | return i; | |
2619 | } | |
2620 | ||
2621 | qemu_error("qemu: Unsupported NIC model: %s\n", nd->model); | |
2622 | return -1; | |
2623 | } | |
2624 | ||
2625 | static int net_handle_fd_param(Monitor *mon, const char *param) | |
2626 | { | |
2627 | if (!qemu_isdigit(param[0])) { | |
2628 | int fd; | |
2629 | ||
2630 | fd = monitor_get_fd(mon, param); | |
2631 | if (fd == -1) { | |
2632 | qemu_error("No file descriptor named %s found", param); | |
2633 | return -1; | |
2634 | } | |
2635 | ||
2636 | return fd; | |
2637 | } else { | |
2638 | return strtol(param, NULL, 0); | |
2639 | } | |
2640 | } | |
2641 | ||
2642 | static int net_init_nic(QemuOpts *opts, | |
2643 | Monitor *mon, | |
2644 | const char *name, | |
2645 | VLANState *vlan) | |
2646 | { | |
2647 | int idx; | |
2648 | NICInfo *nd; | |
2649 | const char *netdev; | |
2650 | ||
2651 | idx = nic_get_free_idx(); | |
2652 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
2653 | qemu_error("Too Many NICs\n"); | |
2654 | return -1; | |
2655 | } | |
2656 | ||
2657 | nd = &nd_table[idx]; | |
2658 | ||
2659 | memset(nd, 0, sizeof(*nd)); | |
2660 | ||
2661 | if ((netdev = qemu_opt_get(opts, "netdev"))) { | |
2662 | nd->netdev = qemu_find_netdev(netdev); | |
2663 | if (!nd->netdev) { | |
2664 | qemu_error("netdev '%s' not found\n", netdev); | |
2665 | return -1; | |
2666 | } | |
2667 | } else { | |
2668 | assert(vlan); | |
2669 | nd->vlan = vlan; | |
2670 | } | |
2671 | if (name) { | |
2672 | nd->name = qemu_strdup(name); | |
2673 | } | |
2674 | if (qemu_opt_get(opts, "model")) { | |
2675 | nd->model = qemu_strdup(qemu_opt_get(opts, "model")); | |
2676 | } | |
2677 | if (qemu_opt_get(opts, "addr")) { | |
2678 | nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr")); | |
2679 | } | |
2680 | ||
2681 | nd->macaddr[0] = 0x52; | |
2682 | nd->macaddr[1] = 0x54; | |
2683 | nd->macaddr[2] = 0x00; | |
2684 | nd->macaddr[3] = 0x12; | |
2685 | nd->macaddr[4] = 0x34; | |
2686 | nd->macaddr[5] = 0x56 + idx; | |
2687 | ||
2688 | if (qemu_opt_get(opts, "macaddr") && | |
2689 | parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) { | |
2690 | qemu_error("invalid syntax for ethernet address\n"); | |
2691 | return -1; | |
2692 | } | |
2693 | ||
2694 | nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED); | |
2695 | if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED && | |
2696 | (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) { | |
2697 | qemu_error("invalid # of vectors: %d\n", nd->nvectors); | |
2698 | return -1; | |
2699 | } | |
2700 | ||
2701 | nd->used = 1; | |
2702 | if (vlan) { | |
2703 | nd->vlan->nb_guest_devs++; | |
2704 | } | |
2705 | nb_nics++; | |
2706 | ||
2707 | return idx; | |
2708 | } | |
2709 | ||
2710 | #if defined(CONFIG_SLIRP) | |
2711 | static int net_init_slirp_configs(const char *name, const char *value, void *opaque) | |
2712 | { | |
2713 | struct slirp_config_str *config; | |
2714 | ||
2715 | if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) { | |
2716 | return 0; | |
2717 | } | |
2718 | ||
2719 | config = qemu_mallocz(sizeof(*config)); | |
2720 | ||
2721 | pstrcpy(config->str, sizeof(config->str), value); | |
2722 | ||
2723 | if (!strcmp(name, "hostfwd")) { | |
2724 | config->flags = SLIRP_CFG_HOSTFWD; | |
2725 | } | |
2726 | ||
2727 | config->next = slirp_configs; | |
2728 | slirp_configs = config; | |
2729 | ||
2730 | return 0; | |
2731 | } | |
2732 | ||
2733 | static int net_init_slirp(QemuOpts *opts, | |
2734 | Monitor *mon, | |
2735 | const char *name, | |
2736 | VLANState *vlan) | |
2737 | { | |
2738 | struct slirp_config_str *config; | |
2739 | const char *vhost; | |
2740 | const char *vhostname; | |
2741 | const char *vdhcp_start; | |
2742 | const char *vnamesrv; | |
2743 | const char *tftp_export; | |
2744 | const char *bootfile; | |
2745 | const char *smb_export; | |
2746 | const char *vsmbsrv; | |
2747 | char *vnet = NULL; | |
2748 | int restricted = 0; | |
2749 | int ret; | |
2750 | ||
2751 | vhost = qemu_opt_get(opts, "host"); | |
2752 | vhostname = qemu_opt_get(opts, "hostname"); | |
2753 | vdhcp_start = qemu_opt_get(opts, "dhcpstart"); | |
2754 | vnamesrv = qemu_opt_get(opts, "dns"); | |
2755 | tftp_export = qemu_opt_get(opts, "tftp"); | |
2756 | bootfile = qemu_opt_get(opts, "bootfile"); | |
2757 | smb_export = qemu_opt_get(opts, "smb"); | |
2758 | vsmbsrv = qemu_opt_get(opts, "smbserver"); | |
2759 | ||
2760 | if (qemu_opt_get(opts, "ip")) { | |
2761 | const char *ip = qemu_opt_get(opts, "ip"); | |
2762 | int l = strlen(ip) + strlen("/24") + 1; | |
2763 | ||
2764 | vnet = qemu_malloc(l); | |
2765 | ||
2766 | /* emulate legacy ip= parameter */ | |
2767 | pstrcpy(vnet, l, ip); | |
2768 | pstrcat(vnet, l, "/24"); | |
2769 | } | |
2770 | ||
2771 | if (qemu_opt_get(opts, "net")) { | |
2772 | if (vnet) { | |
2773 | qemu_free(vnet); | |
2774 | } | |
2775 | vnet = qemu_strdup(qemu_opt_get(opts, "net")); | |
2776 | } | |
2777 | ||
2778 | if (qemu_opt_get(opts, "restrict") && | |
2779 | qemu_opt_get(opts, "restrict")[0] == 'y') { | |
2780 | restricted = 1; | |
2781 | } | |
2782 | ||
2783 | qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0); | |
2784 | ||
2785 | ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost, | |
2786 | vhostname, tftp_export, bootfile, vdhcp_start, | |
2787 | vnamesrv, smb_export, vsmbsrv); | |
2788 | ||
2789 | while (slirp_configs) { | |
2790 | config = slirp_configs; | |
2791 | slirp_configs = config->next; | |
2792 | qemu_free(config); | |
2793 | } | |
2794 | ||
2795 | if (ret != -1 && vlan) { | |
2796 | vlan->nb_host_devs++; | |
2797 | } | |
2798 | ||
2799 | qemu_free(vnet); | |
2800 | ||
2801 | return ret; | |
2802 | } | |
2803 | #endif /* CONFIG_SLIRP */ | |
2804 | ||
2805 | #if !defined(_WIN32) && !defined(_AIX) | |
2806 | int net_init_tap(QemuOpts *opts, Monitor *mon, const char *name, VLANState *vlan) | |
2807 | { | |
2808 | TAPState *s; | |
2809 | int fd, vnet_hdr; | |
2810 | ||
2811 | if (qemu_opt_get(opts, "fd")) { | |
2812 | if (qemu_opt_get(opts, "ifname") || | |
2813 | qemu_opt_get(opts, "script") || | |
2814 | qemu_opt_get(opts, "downscript") || | |
2815 | qemu_opt_get(opts, "vnet_hdr")) { | |
2816 | qemu_error("ifname=, script=, downscript= and vnet_hdr= is invalid with fd=\n"); | |
2817 | return -1; | |
2818 | } | |
2819 | ||
2820 | fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd")); | |
2821 | if (fd == -1) { | |
2822 | return -1; | |
2823 | } | |
2824 | ||
2825 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
2826 | ||
2827 | vnet_hdr = tap_probe_vnet_hdr(fd); | |
2828 | } else { | |
2829 | if (!qemu_opt_get(opts, "script")) { | |
2830 | qemu_opt_set(opts, "script", DEFAULT_NETWORK_SCRIPT); | |
2831 | } | |
2832 | ||
2833 | if (!qemu_opt_get(opts, "downscript")) { | |
2834 | qemu_opt_set(opts, "downscript", DEFAULT_NETWORK_DOWN_SCRIPT); | |
2835 | } | |
2836 | ||
2837 | fd = net_tap_init(opts, &vnet_hdr); | |
2838 | } | |
2839 | ||
2840 | s = net_tap_fd_init(vlan, "tap", name, fd, vnet_hdr); | |
2841 | if (!s) { | |
2842 | close(fd); | |
2843 | return -1; | |
2844 | } | |
2845 | ||
2846 | if (tap_set_sndbuf(s, opts) < 0) { | |
2847 | return -1; | |
2848 | } | |
2849 | ||
2850 | if (qemu_opt_get(opts, "fd")) { | |
2851 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd); | |
2852 | } else { | |
2853 | const char *ifname, *script, *downscript; | |
2854 | ||
2855 | ifname = qemu_opt_get(opts, "ifname"); | |
2856 | script = qemu_opt_get(opts, "script"); | |
2857 | downscript = qemu_opt_get(opts, "downscript"); | |
2858 | ||
2859 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
2860 | "ifname=%s,script=%s,downscript=%s", | |
2861 | ifname, script, downscript); | |
2862 | ||
2863 | if (strcmp(downscript, "no") != 0) { | |
2864 | snprintf(s->down_script, sizeof(s->down_script), "%s", downscript); | |
2865 | snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname); | |
2866 | } | |
2867 | } | |
2868 | ||
2869 | if (vlan) { | |
2870 | vlan->nb_host_devs++; | |
2871 | } | |
2872 | ||
2873 | return 0; | |
2874 | } | |
2875 | #endif /* !defined(_WIN32) && !defined(_AIX) */ | |
2876 | ||
2877 | static int net_init_socket(QemuOpts *opts, | |
2878 | Monitor *mon, | |
2879 | const char *name, | |
2880 | VLANState *vlan) | |
2881 | { | |
2882 | if (qemu_opt_get(opts, "fd")) { | |
2883 | int fd; | |
2884 | ||
2885 | if (qemu_opt_get(opts, "listen") || | |
2886 | qemu_opt_get(opts, "connect") || | |
2887 | qemu_opt_get(opts, "mcast")) { | |
2888 | qemu_error("listen=, connect= and mcast= is invalid with fd=\n"); | |
2889 | return -1; | |
2890 | } | |
2891 | ||
2892 | fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd")); | |
2893 | if (fd == -1) { | |
2894 | return -1; | |
2895 | } | |
2896 | ||
2897 | if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) { | |
2898 | close(fd); | |
2899 | return -1; | |
2900 | } | |
2901 | } else if (qemu_opt_get(opts, "listen")) { | |
2902 | const char *listen; | |
2903 | ||
2904 | if (qemu_opt_get(opts, "fd") || | |
2905 | qemu_opt_get(opts, "connect") || | |
2906 | qemu_opt_get(opts, "mcast")) { | |
2907 | qemu_error("fd=, connect= and mcast= is invalid with listen=\n"); | |
2908 | return -1; | |
2909 | } | |
2910 | ||
2911 | listen = qemu_opt_get(opts, "listen"); | |
2912 | ||
2913 | if (net_socket_listen_init(vlan, "socket", name, listen) == -1) { | |
2914 | return -1; | |
2915 | } | |
2916 | } else if (qemu_opt_get(opts, "connect")) { | |
2917 | const char *connect; | |
2918 | ||
2919 | if (qemu_opt_get(opts, "fd") || | |
2920 | qemu_opt_get(opts, "listen") || | |
2921 | qemu_opt_get(opts, "mcast")) { | |
2922 | qemu_error("fd=, listen= and mcast= is invalid with connect=\n"); | |
2923 | return -1; | |
2924 | } | |
2925 | ||
2926 | connect = qemu_opt_get(opts, "connect"); | |
2927 | ||
2928 | if (net_socket_connect_init(vlan, "socket", name, connect) == -1) { | |
2929 | return -1; | |
2930 | } | |
2931 | } else if (qemu_opt_get(opts, "mcast")) { | |
2932 | const char *mcast; | |
2933 | ||
2934 | if (qemu_opt_get(opts, "fd") || | |
2935 | qemu_opt_get(opts, "connect") || | |
2936 | qemu_opt_get(opts, "listen")) { | |
2937 | qemu_error("fd=, connect= and listen= is invalid with mcast=\n"); | |
2938 | return -1; | |
2939 | } | |
2940 | ||
2941 | mcast = qemu_opt_get(opts, "mcast"); | |
2942 | ||
2943 | if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) { | |
2944 | return -1; | |
2945 | } | |
2946 | } else { | |
2947 | qemu_error("-socket requires fd=, listen=, connect= or mcast=\n"); | |
2948 | return -1; | |
2949 | } | |
2950 | ||
2951 | if (vlan) { | |
2952 | vlan->nb_host_devs++; | |
2953 | } | |
2954 | ||
2955 | return 0; | |
2956 | } | |
2957 | ||
2958 | #ifdef CONFIG_VDE | |
2959 | static int net_init_vde(QemuOpts *opts, | |
2960 | Monitor *mon, | |
2961 | const char *name, | |
2962 | VLANState *vlan) | |
2963 | { | |
2964 | const char *sock; | |
2965 | const char *group; | |
2966 | int port, mode; | |
2967 | ||
2968 | sock = qemu_opt_get(opts, "sock"); | |
2969 | group = qemu_opt_get(opts, "group"); | |
2970 | ||
2971 | port = qemu_opt_get_number(opts, "port", 0); | |
2972 | mode = qemu_opt_get_number(opts, "mode", 0700); | |
2973 | ||
2974 | if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) { | |
2975 | return -1; | |
2976 | } | |
2977 | ||
2978 | if (vlan) { | |
2979 | vlan->nb_host_devs++; | |
2980 | } | |
2981 | ||
2982 | return 0; | |
2983 | } | |
2984 | #endif | |
2985 | ||
2986 | static int net_init_dump(QemuOpts *opts, | |
2987 | Monitor *mon, | |
2988 | const char *name, | |
2989 | VLANState *vlan) | |
2990 | { | |
2991 | int len; | |
2992 | const char *file; | |
2993 | char def_file[128]; | |
2994 | ||
2995 | assert(vlan); | |
2996 | ||
2997 | file = qemu_opt_get(opts, "file"); | |
2998 | if (!file) { | |
2999 | snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id); | |
3000 | file = def_file; | |
3001 | } | |
3002 | ||
3003 | len = qemu_opt_get_size(opts, "len", 65536); | |
3004 | ||
3005 | return net_dump_init(vlan, "dump", name, file, len); | |
3006 | } | |
3007 | ||
3008 | #define NET_COMMON_PARAMS_DESC \ | |
3009 | { \ | |
3010 | .name = "type", \ | |
3011 | .type = QEMU_OPT_STRING, \ | |
3012 | .help = "net client type (nic, tap etc.)", \ | |
3013 | }, { \ | |
3014 | .name = "vlan", \ | |
3015 | .type = QEMU_OPT_NUMBER, \ | |
3016 | .help = "vlan number", \ | |
3017 | }, { \ | |
3018 | .name = "name", \ | |
3019 | .type = QEMU_OPT_STRING, \ | |
3020 | .help = "identifier for monitor commands", \ | |
3021 | } | |
3022 | ||
3023 | typedef int (*net_client_init_func)(QemuOpts *opts, | |
3024 | Monitor *mon, | |
3025 | const char *name, | |
3026 | VLANState *vlan); | |
3027 | ||
3028 | /* magic number, but compiler will warn if too small */ | |
3029 | #define NET_MAX_DESC 20 | |
3030 | ||
3031 | static struct { | |
3032 | const char *type; | |
3033 | net_client_init_func init; | |
3034 | QemuOptDesc desc[NET_MAX_DESC]; | |
3035 | } net_client_types[] = { | |
3036 | { | |
3037 | .type = "none", | |
3038 | .desc = { | |
3039 | NET_COMMON_PARAMS_DESC, | |
3040 | { /* end of list */ } | |
3041 | }, | |
3042 | }, { | |
3043 | .type = "nic", | |
3044 | .init = net_init_nic, | |
3045 | .desc = { | |
3046 | NET_COMMON_PARAMS_DESC, | |
3047 | { | |
3048 | .name = "netdev", | |
3049 | .type = QEMU_OPT_STRING, | |
3050 | .help = "id of -netdev to connect to", | |
3051 | }, | |
3052 | { | |
3053 | .name = "macaddr", | |
3054 | .type = QEMU_OPT_STRING, | |
3055 | .help = "MAC address", | |
3056 | }, { | |
3057 | .name = "model", | |
3058 | .type = QEMU_OPT_STRING, | |
3059 | .help = "device model (e1000, rtl8139, virtio etc.)", | |
3060 | }, { | |
3061 | .name = "addr", | |
3062 | .type = QEMU_OPT_STRING, | |
3063 | .help = "PCI device address", | |
3064 | }, { | |
3065 | .name = "vectors", | |
3066 | .type = QEMU_OPT_NUMBER, | |
3067 | .help = "number of MSI-x vectors, 0 to disable MSI-X", | |
3068 | }, | |
3069 | { /* end of list */ } | |
3070 | }, | |
3071 | #ifdef CONFIG_SLIRP | |
3072 | }, { | |
3073 | .type = "user", | |
3074 | .init = net_init_slirp, | |
3075 | .desc = { | |
3076 | NET_COMMON_PARAMS_DESC, | |
3077 | { | |
3078 | .name = "hostname", | |
3079 | .type = QEMU_OPT_STRING, | |
3080 | .help = "client hostname reported by the builtin DHCP server", | |
3081 | }, { | |
3082 | .name = "restrict", | |
3083 | .type = QEMU_OPT_STRING, | |
3084 | .help = "isolate the guest from the host (y|yes|n|no)", | |
3085 | }, { | |
3086 | .name = "ip", | |
3087 | .type = QEMU_OPT_STRING, | |
3088 | .help = "legacy parameter, use net= instead", | |
3089 | }, { | |
3090 | .name = "net", | |
3091 | .type = QEMU_OPT_STRING, | |
3092 | .help = "IP address and optional netmask", | |
3093 | }, { | |
3094 | .name = "host", | |
3095 | .type = QEMU_OPT_STRING, | |
3096 | .help = "guest-visible address of the host", | |
3097 | }, { | |
3098 | .name = "tftp", | |
3099 | .type = QEMU_OPT_STRING, | |
3100 | .help = "root directory of the built-in TFTP server", | |
3101 | }, { | |
3102 | .name = "bootfile", | |
3103 | .type = QEMU_OPT_STRING, | |
3104 | .help = "BOOTP filename, for use with tftp=", | |
3105 | }, { | |
3106 | .name = "dhcpstart", | |
3107 | .type = QEMU_OPT_STRING, | |
3108 | .help = "the first of the 16 IPs the built-in DHCP server can assign", | |
3109 | }, { | |
3110 | .name = "dns", | |
3111 | .type = QEMU_OPT_STRING, | |
3112 | .help = "guest-visible address of the virtual nameserver", | |
3113 | }, { | |
3114 | .name = "smb", | |
3115 | .type = QEMU_OPT_STRING, | |
3116 | .help = "root directory of the built-in SMB server", | |
3117 | }, { | |
3118 | .name = "smbserver", | |
3119 | .type = QEMU_OPT_STRING, | |
3120 | .help = "IP address of the built-in SMB server", | |
3121 | }, { | |
3122 | .name = "hostfwd", | |
3123 | .type = QEMU_OPT_STRING, | |
3124 | .help = "guest port number to forward incoming TCP or UDP connections", | |
3125 | }, { | |
3126 | .name = "guestfwd", | |
3127 | .type = QEMU_OPT_STRING, | |
3128 | .help = "IP address and port to forward guest TCP connections", | |
3129 | }, | |
3130 | { /* end of list */ } | |
3131 | }, | |
3132 | #endif | |
3133 | #ifndef _AIX | |
3134 | }, { | |
3135 | .type = "tap", | |
3136 | .init = net_init_tap, | |
3137 | .desc = { | |
3138 | NET_COMMON_PARAMS_DESC, | |
3139 | { | |
3140 | .name = "ifname", | |
3141 | .type = QEMU_OPT_STRING, | |
3142 | .help = "interface name", | |
3143 | }, | |
3144 | #ifndef _WIN32 | |
3145 | { | |
3146 | .name = "fd", | |
3147 | .type = QEMU_OPT_STRING, | |
3148 | .help = "file descriptor of an already opened tap", | |
3149 | }, { | |
3150 | .name = "script", | |
3151 | .type = QEMU_OPT_STRING, | |
3152 | .help = "script to initialize the interface", | |
3153 | }, { | |
3154 | .name = "downscript", | |
3155 | .type = QEMU_OPT_STRING, | |
3156 | .help = "script to shut down the interface", | |
3157 | }, { | |
3158 | .name = "sndbuf", | |
3159 | .type = QEMU_OPT_SIZE, | |
3160 | .help = "send buffer limit" | |
3161 | }, { | |
3162 | .name = "vnet_hdr", | |
3163 | .type = QEMU_OPT_BOOL, | |
3164 | .help = "enable the IFF_VNET_HDR flag on the tap interface" | |
3165 | }, | |
3166 | #endif /* _WIN32 */ | |
3167 | { /* end of list */ } | |
3168 | }, | |
3169 | #endif /* _AIX */ | |
3170 | }, { | |
3171 | .type = "socket", | |
3172 | .init = net_init_socket, | |
3173 | .desc = { | |
3174 | NET_COMMON_PARAMS_DESC, | |
3175 | { | |
3176 | .name = "fd", | |
3177 | .type = QEMU_OPT_STRING, | |
3178 | .help = "file descriptor of an already opened socket", | |
3179 | }, { | |
3180 | .name = "listen", | |
3181 | .type = QEMU_OPT_STRING, | |
3182 | .help = "port number, and optional hostname, to listen on", | |
3183 | }, { | |
3184 | .name = "connect", | |
3185 | .type = QEMU_OPT_STRING, | |
3186 | .help = "port number, and optional hostname, to connect to", | |
3187 | }, { | |
3188 | .name = "mcast", | |
3189 | .type = QEMU_OPT_STRING, | |
3190 | .help = "UDP multicast address and port number", | |
3191 | }, | |
3192 | { /* end of list */ } | |
3193 | }, | |
3194 | #ifdef CONFIG_VDE | |
3195 | }, { | |
3196 | .type = "vde", | |
3197 | .init = net_init_vde, | |
3198 | .desc = { | |
3199 | NET_COMMON_PARAMS_DESC, | |
3200 | { | |
3201 | .name = "sock", | |
3202 | .type = QEMU_OPT_STRING, | |
3203 | .help = "socket path", | |
3204 | }, { | |
3205 | .name = "port", | |
3206 | .type = QEMU_OPT_NUMBER, | |
3207 | .help = "port number", | |
3208 | }, { | |
3209 | .name = "group", | |
3210 | .type = QEMU_OPT_STRING, | |
3211 | .help = "group owner of socket", | |
3212 | }, { | |
3213 | .name = "mode", | |
3214 | .type = QEMU_OPT_NUMBER, | |
3215 | .help = "permissions for socket", | |
3216 | }, | |
3217 | { /* end of list */ } | |
3218 | }, | |
3219 | #endif | |
3220 | }, { | |
3221 | .type = "dump", | |
3222 | .init = net_init_dump, | |
3223 | .desc = { | |
3224 | NET_COMMON_PARAMS_DESC, | |
3225 | { | |
3226 | .name = "len", | |
3227 | .type = QEMU_OPT_SIZE, | |
3228 | .help = "per-packet size limit (64k default)", | |
3229 | }, { | |
3230 | .name = "file", | |
3231 | .type = QEMU_OPT_STRING, | |
3232 | .help = "dump file path (default is qemu-vlan0.pcap)", | |
3233 | }, | |
3234 | { /* end of list */ } | |
3235 | }, | |
3236 | }, | |
3237 | { /* end of list */ } | |
3238 | }; | |
3239 | ||
3240 | int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev) | |
3241 | { | |
3242 | const char *name; | |
3243 | const char *type; | |
3244 | int i; | |
3245 | ||
3246 | type = qemu_opt_get(opts, "type"); | |
3247 | if (!type) { | |
3248 | qemu_error("No type specified for -net\n"); | |
3249 | return -1; | |
3250 | } | |
3251 | ||
3252 | if (is_netdev) { | |
3253 | if (strcmp(type, "tap") != 0 && | |
3254 | #ifdef CONFIG_SLIRP | |
3255 | strcmp(type, "user") != 0 && | |
3256 | #endif | |
3257 | #ifdef CONFIG_VDE | |
3258 | strcmp(type, "vde") != 0 && | |
3259 | #endif | |
3260 | strcmp(type, "socket") != 0) { | |
3261 | qemu_error("The '%s' network backend type is not valid with -netdev\n", | |
3262 | type); | |
3263 | return -1; | |
3264 | } | |
3265 | ||
3266 | if (qemu_opt_get(opts, "vlan")) { | |
3267 | qemu_error("The 'vlan' parameter is not valid with -netdev\n"); | |
3268 | return -1; | |
3269 | } | |
3270 | if (qemu_opt_get(opts, "name")) { | |
3271 | qemu_error("The 'name' parameter is not valid with -netdev\n"); | |
3272 | return -1; | |
3273 | } | |
3274 | if (!qemu_opts_id(opts)) { | |
3275 | qemu_error("The id= parameter is required with -netdev\n"); | |
3276 | return -1; | |
3277 | } | |
3278 | } | |
3279 | ||
3280 | name = qemu_opts_id(opts); | |
3281 | if (!name) { | |
3282 | name = qemu_opt_get(opts, "name"); | |
3283 | } | |
3284 | ||
3285 | for (i = 0; net_client_types[i].type != NULL; i++) { | |
3286 | if (!strcmp(net_client_types[i].type, type)) { | |
3287 | VLANState *vlan = NULL; | |
3288 | ||
3289 | if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) { | |
3290 | return -1; | |
3291 | } | |
3292 | ||
3293 | /* Do not add to a vlan if it's a -netdev or a nic with a | |
3294 | * netdev= parameter. */ | |
3295 | if (!(is_netdev || | |
3296 | (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) { | |
3297 | vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); | |
3298 | } | |
3299 | ||
3300 | if (net_client_types[i].init) { | |
3301 | return net_client_types[i].init(opts, mon, name, vlan); | |
3302 | } else { | |
3303 | return 0; | |
3304 | } | |
3305 | } | |
3306 | } | |
3307 | ||
3308 | qemu_error("Invalid -net type '%s'\n", type); | |
3309 | return -1; | |
3310 | } | |
3311 | ||
3312 | void net_client_uninit(NICInfo *nd) | |
3313 | { | |
3314 | if (nd->vlan) { | |
3315 | nd->vlan->nb_guest_devs--; | |
3316 | } | |
3317 | nb_nics--; | |
3318 | ||
3319 | qemu_free(nd->model); | |
3320 | qemu_free(nd->name); | |
3321 | qemu_free(nd->devaddr); | |
3322 | ||
3323 | nd->used = 0; | |
3324 | } | |
3325 | ||
3326 | static int net_host_check_device(const char *device) | |
3327 | { | |
3328 | int i; | |
3329 | const char *valid_param_list[] = { "tap", "socket", "dump" | |
3330 | #ifdef CONFIG_SLIRP | |
3331 | ,"user" | |
3332 | #endif | |
3333 | #ifdef CONFIG_VDE | |
3334 | ,"vde" | |
3335 | #endif | |
3336 | }; | |
3337 | for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { | |
3338 | if (!strncmp(valid_param_list[i], device, | |
3339 | strlen(valid_param_list[i]))) | |
3340 | return 1; | |
3341 | } | |
3342 | ||
3343 | return 0; | |
3344 | } | |
3345 | ||
3346 | void net_host_device_add(Monitor *mon, const QDict *qdict) | |
3347 | { | |
3348 | const char *device = qdict_get_str(qdict, "device"); | |
3349 | const char *opts_str = qdict_get_try_str(qdict, "opts"); | |
3350 | QemuOpts *opts; | |
3351 | ||
3352 | if (!net_host_check_device(device)) { | |
3353 | monitor_printf(mon, "invalid host network device %s\n", device); | |
3354 | return; | |
3355 | } | |
3356 | ||
3357 | opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL); | |
3358 | if (!opts) { | |
3359 | monitor_printf(mon, "parsing network options '%s' failed\n", | |
3360 | opts_str ? opts_str : ""); | |
3361 | return; | |
3362 | } | |
3363 | ||
3364 | qemu_opt_set(opts, "type", device); | |
3365 | ||
3366 | if (net_client_init(mon, opts, 0) < 0) { | |
3367 | monitor_printf(mon, "adding host network device %s failed\n", device); | |
3368 | } | |
3369 | } | |
3370 | ||
3371 | void net_host_device_remove(Monitor *mon, const QDict *qdict) | |
3372 | { | |
3373 | VLANClientState *vc; | |
3374 | int vlan_id = qdict_get_int(qdict, "vlan_id"); | |
3375 | const char *device = qdict_get_str(qdict, "device"); | |
3376 | ||
3377 | vc = qemu_find_vlan_client_by_name(mon, vlan_id, device); | |
3378 | if (!vc) { | |
3379 | return; | |
3380 | } | |
3381 | if (!net_host_check_device(vc->model)) { | |
3382 | monitor_printf(mon, "invalid host network device %s\n", device); | |
3383 | return; | |
3384 | } | |
3385 | qemu_del_vlan_client(vc); | |
3386 | } | |
3387 | ||
3388 | void net_set_boot_mask(int net_boot_mask) | |
3389 | { | |
3390 | int i; | |
3391 | ||
3392 | /* Only the first four NICs may be bootable */ | |
3393 | net_boot_mask = net_boot_mask & 0xF; | |
3394 | ||
3395 | for (i = 0; i < nb_nics; i++) { | |
3396 | if (net_boot_mask & (1 << i)) { | |
3397 | nd_table[i].bootable = 1; | |
3398 | net_boot_mask &= ~(1 << i); | |
3399 | } | |
3400 | } | |
3401 | ||
3402 | if (net_boot_mask) { | |
3403 | fprintf(stderr, "Cannot boot from non-existent NIC\n"); | |
3404 | exit(1); | |
3405 | } | |
3406 | } | |
3407 | ||
3408 | void do_info_network(Monitor *mon) | |
3409 | { | |
3410 | VLANState *vlan; | |
3411 | ||
3412 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
3413 | VLANClientState *vc; | |
3414 | ||
3415 | monitor_printf(mon, "VLAN %d devices:\n", vlan->id); | |
3416 | ||
3417 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
3418 | monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str); | |
3419 | } | |
3420 | } | |
3421 | } | |
3422 | ||
3423 | void do_set_link(Monitor *mon, const QDict *qdict) | |
3424 | { | |
3425 | VLANState *vlan; | |
3426 | VLANClientState *vc = NULL; | |
3427 | const char *name = qdict_get_str(qdict, "name"); | |
3428 | const char *up_or_down = qdict_get_str(qdict, "up_or_down"); | |
3429 | ||
3430 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
3431 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
3432 | if (strcmp(vc->name, name) == 0) { | |
3433 | goto done; | |
3434 | } | |
3435 | } | |
3436 | } | |
3437 | done: | |
3438 | ||
3439 | if (!vc) { | |
3440 | monitor_printf(mon, "could not find network device '%s'\n", name); | |
3441 | return; | |
3442 | } | |
3443 | ||
3444 | if (strcmp(up_or_down, "up") == 0) | |
3445 | vc->link_down = 0; | |
3446 | else if (strcmp(up_or_down, "down") == 0) | |
3447 | vc->link_down = 1; | |
3448 | else | |
3449 | monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' " | |
3450 | "valid\n", up_or_down); | |
3451 | ||
3452 | if (vc->link_status_changed) | |
3453 | vc->link_status_changed(vc); | |
3454 | } | |
3455 | ||
3456 | void net_cleanup(void) | |
3457 | { | |
3458 | VLANState *vlan; | |
3459 | VLANClientState *vc, *next_vc; | |
3460 | ||
3461 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
3462 | QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) { | |
3463 | qemu_del_vlan_client(vc); | |
3464 | } | |
3465 | } | |
3466 | ||
3467 | QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) { | |
3468 | qemu_del_vlan_client(vc); | |
3469 | } | |
3470 | } | |
3471 | ||
3472 | static void net_check_clients(void) | |
3473 | { | |
3474 | VLANState *vlan; | |
3475 | ||
3476 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
3477 | if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0) | |
3478 | continue; | |
3479 | if (vlan->nb_guest_devs == 0) | |
3480 | fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id); | |
3481 | if (vlan->nb_host_devs == 0) | |
3482 | fprintf(stderr, | |
3483 | "Warning: vlan %d is not connected to host network\n", | |
3484 | vlan->id); | |
3485 | } | |
3486 | } | |
3487 | ||
3488 | static int net_init_client(QemuOpts *opts, void *dummy) | |
3489 | { | |
3490 | if (net_client_init(NULL, opts, 0) < 0) | |
3491 | return -1; | |
3492 | return 0; | |
3493 | } | |
3494 | ||
3495 | static int net_init_netdev(QemuOpts *opts, void *dummy) | |
3496 | { | |
3497 | return net_client_init(NULL, opts, 1); | |
3498 | } | |
3499 | ||
3500 | int net_init_clients(void) | |
3501 | { | |
3502 | if (QTAILQ_EMPTY(&qemu_net_opts.head)) { | |
3503 | /* if no clients, we use a default config */ | |
3504 | qemu_opts_set(&qemu_net_opts, NULL, "type", "nic"); | |
3505 | #ifdef CONFIG_SLIRP | |
3506 | qemu_opts_set(&qemu_net_opts, NULL, "type", "user"); | |
3507 | #endif | |
3508 | } | |
3509 | ||
3510 | QTAILQ_INIT(&vlans); | |
3511 | QTAILQ_INIT(&non_vlan_clients); | |
3512 | ||
3513 | if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1) | |
3514 | return -1; | |
3515 | ||
3516 | if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) { | |
3517 | return -1; | |
3518 | } | |
3519 | ||
3520 | net_check_clients(); | |
3521 | ||
3522 | return 0; | |
3523 | } | |
3524 | ||
3525 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) | |
3526 | { | |
3527 | #if defined(CONFIG_SLIRP) | |
3528 | /* handle legacy -net channel,port:chr */ | |
3529 | if (!strcmp(opts_list->name, "net") && | |
3530 | !strncmp(optarg, "channel,", strlen("channel,"))) { | |
3531 | int ret; | |
3532 | ||
3533 | optarg += strlen("channel,"); | |
3534 | ||
3535 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
3536 | struct slirp_config_str *config; | |
3537 | ||
3538 | config = qemu_malloc(sizeof(*config)); | |
3539 | pstrcpy(config->str, sizeof(config->str), optarg); | |
3540 | config->flags = SLIRP_CFG_LEGACY; | |
3541 | config->next = slirp_configs; | |
3542 | slirp_configs = config; | |
3543 | ret = 0; | |
3544 | } else { | |
3545 | ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1); | |
3546 | } | |
3547 | ||
3548 | return ret; | |
3549 | } | |
3550 | #endif | |
3551 | if (!qemu_opts_parse(opts_list, optarg, "type")) { | |
3552 | return -1; | |
3553 | } | |
3554 | ||
3555 | return 0; | |
3556 | } |