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