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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 <linux/if_tun.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 "monitor.h" | |
107 | #include "sysemu.h" | |
108 | #include "qemu-timer.h" | |
109 | #include "qemu-char.h" | |
110 | #include "audio/audio.h" | |
111 | #include "qemu_socket.h" | |
112 | #include "qemu-log.h" | |
113 | #include "qemu-config.h" | |
114 | ||
115 | #include "slirp/libslirp.h" | |
116 | ||
117 | static QTAILQ_HEAD(, VLANState) vlans; | |
118 | ||
119 | /***********************************************************/ | |
120 | /* network device redirectors */ | |
121 | ||
122 | #if defined(DEBUG_NET) || defined(DEBUG_SLIRP) | |
123 | static void hex_dump(FILE *f, const uint8_t *buf, int size) | |
124 | { | |
125 | int len, i, j, c; | |
126 | ||
127 | for(i=0;i<size;i+=16) { | |
128 | len = size - i; | |
129 | if (len > 16) | |
130 | len = 16; | |
131 | fprintf(f, "%08x ", i); | |
132 | for(j=0;j<16;j++) { | |
133 | if (j < len) | |
134 | fprintf(f, " %02x", buf[i+j]); | |
135 | else | |
136 | fprintf(f, " "); | |
137 | } | |
138 | fprintf(f, " "); | |
139 | for(j=0;j<len;j++) { | |
140 | c = buf[i+j]; | |
141 | if (c < ' ' || c > '~') | |
142 | c = '.'; | |
143 | fprintf(f, "%c", c); | |
144 | } | |
145 | fprintf(f, "\n"); | |
146 | } | |
147 | } | |
148 | #endif | |
149 | ||
150 | static int parse_macaddr(uint8_t *macaddr, const char *p) | |
151 | { | |
152 | int i; | |
153 | char *last_char; | |
154 | long int offset; | |
155 | ||
156 | errno = 0; | |
157 | offset = strtol(p, &last_char, 0); | |
158 | if (0 == errno && '\0' == *last_char && | |
159 | offset >= 0 && offset <= 0xFFFFFF) { | |
160 | macaddr[3] = (offset & 0xFF0000) >> 16; | |
161 | macaddr[4] = (offset & 0xFF00) >> 8; | |
162 | macaddr[5] = offset & 0xFF; | |
163 | return 0; | |
164 | } else { | |
165 | for(i = 0; i < 6; i++) { | |
166 | macaddr[i] = strtol(p, (char **)&p, 16); | |
167 | if (i == 5) { | |
168 | if (*p != '\0') | |
169 | return -1; | |
170 | } else { | |
171 | if (*p != ':' && *p != '-') | |
172 | return -1; | |
173 | p++; | |
174 | } | |
175 | } | |
176 | return 0; | |
177 | } | |
178 | ||
179 | return -1; | |
180 | } | |
181 | ||
182 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) | |
183 | { | |
184 | const char *p, *p1; | |
185 | int len; | |
186 | p = *pp; | |
187 | p1 = strchr(p, sep); | |
188 | if (!p1) | |
189 | return -1; | |
190 | len = p1 - p; | |
191 | p1++; | |
192 | if (buf_size > 0) { | |
193 | if (len > buf_size - 1) | |
194 | len = buf_size - 1; | |
195 | memcpy(buf, p, len); | |
196 | buf[len] = '\0'; | |
197 | } | |
198 | *pp = p1; | |
199 | return 0; | |
200 | } | |
201 | ||
202 | int parse_host_src_port(struct sockaddr_in *haddr, | |
203 | struct sockaddr_in *saddr, | |
204 | const char *input_str) | |
205 | { | |
206 | char *str = strdup(input_str); | |
207 | char *host_str = str; | |
208 | char *src_str; | |
209 | const char *src_str2; | |
210 | char *ptr; | |
211 | ||
212 | /* | |
213 | * Chop off any extra arguments at the end of the string which | |
214 | * would start with a comma, then fill in the src port information | |
215 | * if it was provided else use the "any address" and "any port". | |
216 | */ | |
217 | if ((ptr = strchr(str,','))) | |
218 | *ptr = '\0'; | |
219 | ||
220 | if ((src_str = strchr(input_str,'@'))) { | |
221 | *src_str = '\0'; | |
222 | src_str++; | |
223 | } | |
224 | ||
225 | if (parse_host_port(haddr, host_str) < 0) | |
226 | goto fail; | |
227 | ||
228 | src_str2 = src_str; | |
229 | if (!src_str || *src_str == '\0') | |
230 | src_str2 = ":0"; | |
231 | ||
232 | if (parse_host_port(saddr, src_str2) < 0) | |
233 | goto fail; | |
234 | ||
235 | free(str); | |
236 | return(0); | |
237 | ||
238 | fail: | |
239 | free(str); | |
240 | return -1; | |
241 | } | |
242 | ||
243 | int parse_host_port(struct sockaddr_in *saddr, const char *str) | |
244 | { | |
245 | char buf[512]; | |
246 | struct hostent *he; | |
247 | const char *p, *r; | |
248 | int port; | |
249 | ||
250 | p = str; | |
251 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
252 | return -1; | |
253 | saddr->sin_family = AF_INET; | |
254 | if (buf[0] == '\0') { | |
255 | saddr->sin_addr.s_addr = 0; | |
256 | } else { | |
257 | if (qemu_isdigit(buf[0])) { | |
258 | if (!inet_aton(buf, &saddr->sin_addr)) | |
259 | return -1; | |
260 | } else { | |
261 | if ((he = gethostbyname(buf)) == NULL) | |
262 | return - 1; | |
263 | saddr->sin_addr = *(struct in_addr *)he->h_addr; | |
264 | } | |
265 | } | |
266 | port = strtol(p, (char **)&r, 0); | |
267 | if (r == p) | |
268 | return -1; | |
269 | saddr->sin_port = htons(port); | |
270 | return 0; | |
271 | } | |
272 | ||
273 | void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]) | |
274 | { | |
275 | snprintf(vc->info_str, sizeof(vc->info_str), | |
276 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", | |
277 | vc->model, | |
278 | macaddr[0], macaddr[1], macaddr[2], | |
279 | macaddr[3], macaddr[4], macaddr[5]); | |
280 | } | |
281 | ||
282 | static char *assign_name(VLANClientState *vc1, const char *model) | |
283 | { | |
284 | VLANState *vlan; | |
285 | char buf[256]; | |
286 | int id = 0; | |
287 | ||
288 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
289 | VLANClientState *vc; | |
290 | ||
291 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
292 | if (vc != vc1 && strcmp(vc->model, model) == 0) { | |
293 | id++; | |
294 | } | |
295 | } | |
296 | } | |
297 | ||
298 | snprintf(buf, sizeof(buf), "%s.%d", model, id); | |
299 | ||
300 | return qemu_strdup(buf); | |
301 | } | |
302 | ||
303 | VLANClientState *qemu_new_vlan_client(VLANState *vlan, | |
304 | const char *model, | |
305 | const char *name, | |
306 | NetCanReceive *can_receive, | |
307 | NetReceive *receive, | |
308 | NetReceiveIOV *receive_iov, | |
309 | NetCleanup *cleanup, | |
310 | void *opaque) | |
311 | { | |
312 | VLANClientState *vc; | |
313 | ||
314 | vc = qemu_mallocz(sizeof(VLANClientState)); | |
315 | ||
316 | vc->model = qemu_strdup(model); | |
317 | if (name) | |
318 | vc->name = qemu_strdup(name); | |
319 | else | |
320 | vc->name = assign_name(vc, model); | |
321 | vc->can_receive = can_receive; | |
322 | vc->receive = receive; | |
323 | vc->receive_iov = receive_iov; | |
324 | vc->cleanup = cleanup; | |
325 | vc->opaque = opaque; | |
326 | ||
327 | if (vlan) { | |
328 | vc->vlan = vlan; | |
329 | QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next); | |
330 | } | |
331 | ||
332 | return vc; | |
333 | } | |
334 | ||
335 | void qemu_del_vlan_client(VLANClientState *vc) | |
336 | { | |
337 | if (vc->vlan) { | |
338 | QTAILQ_REMOVE(&vc->vlan->clients, vc, next); | |
339 | } | |
340 | ||
341 | if (vc->cleanup) { | |
342 | vc->cleanup(vc); | |
343 | } | |
344 | ||
345 | qemu_free(vc->name); | |
346 | qemu_free(vc->model); | |
347 | qemu_free(vc); | |
348 | } | |
349 | ||
350 | VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque) | |
351 | { | |
352 | VLANClientState *vc; | |
353 | ||
354 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
355 | if (vc->opaque == opaque) { | |
356 | return vc; | |
357 | } | |
358 | } | |
359 | ||
360 | return NULL; | |
361 | } | |
362 | ||
363 | static VLANClientState * | |
364 | qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id, | |
365 | const char *client_str) | |
366 | { | |
367 | VLANState *vlan; | |
368 | VLANClientState *vc; | |
369 | ||
370 | vlan = qemu_find_vlan(vlan_id, 0); | |
371 | if (!vlan) { | |
372 | monitor_printf(mon, "unknown VLAN %d\n", vlan_id); | |
373 | return NULL; | |
374 | } | |
375 | ||
376 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
377 | if (!strcmp(vc->name, client_str)) { | |
378 | break; | |
379 | } | |
380 | } | |
381 | if (!vc) { | |
382 | monitor_printf(mon, "can't find device %s on VLAN %d\n", | |
383 | client_str, vlan_id); | |
384 | } | |
385 | ||
386 | return vc; | |
387 | } | |
388 | ||
389 | int qemu_can_send_packet(VLANClientState *sender) | |
390 | { | |
391 | VLANState *vlan = sender->vlan; | |
392 | VLANClientState *vc; | |
393 | ||
394 | if (!sender->vlan) { | |
395 | return 1; | |
396 | } | |
397 | ||
398 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
399 | if (vc == sender) { | |
400 | continue; | |
401 | } | |
402 | ||
403 | /* no can_receive() handler, they can always receive */ | |
404 | if (!vc->can_receive || vc->can_receive(vc)) { | |
405 | return 1; | |
406 | } | |
407 | } | |
408 | return 0; | |
409 | } | |
410 | ||
411 | static int | |
412 | qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size) | |
413 | { | |
414 | VLANClientState *vc; | |
415 | int ret = -1; | |
416 | ||
417 | sender->vlan->delivering = 1; | |
418 | ||
419 | QTAILQ_FOREACH(vc, &sender->vlan->clients, next) { | |
420 | ssize_t len; | |
421 | ||
422 | if (vc == sender) { | |
423 | continue; | |
424 | } | |
425 | ||
426 | if (vc->link_down) { | |
427 | ret = size; | |
428 | continue; | |
429 | } | |
430 | ||
431 | len = vc->receive(vc, buf, size); | |
432 | ||
433 | ret = (ret >= 0) ? ret : len; | |
434 | } | |
435 | ||
436 | sender->vlan->delivering = 0; | |
437 | ||
438 | return ret; | |
439 | } | |
440 | ||
441 | void qemu_purge_queued_packets(VLANClientState *vc) | |
442 | { | |
443 | VLANPacket *packet, *next; | |
444 | ||
445 | if (!vc->vlan) | |
446 | return; | |
447 | ||
448 | QTAILQ_FOREACH_SAFE(packet, &vc->vlan->send_queue, entry, next) { | |
449 | if (packet->sender == vc) { | |
450 | QTAILQ_REMOVE(&vc->vlan->send_queue, packet, entry); | |
451 | qemu_free(packet); | |
452 | } | |
453 | } | |
454 | } | |
455 | ||
456 | void qemu_flush_queued_packets(VLANClientState *vc) | |
457 | { | |
458 | if (!vc->vlan) | |
459 | return; | |
460 | ||
461 | while (!QTAILQ_EMPTY(&vc->vlan->send_queue)) { | |
462 | VLANPacket *packet; | |
463 | int ret; | |
464 | ||
465 | packet = QTAILQ_FIRST(&vc->vlan->send_queue); | |
466 | QTAILQ_REMOVE(&vc->vlan->send_queue, packet, entry); | |
467 | ||
468 | ret = qemu_deliver_packet(packet->sender, packet->data, packet->size); | |
469 | if (ret == 0 && packet->sent_cb != NULL) { | |
470 | QTAILQ_INSERT_HEAD(&vc->vlan->send_queue, packet, entry); | |
471 | break; | |
472 | } | |
473 | ||
474 | if (packet->sent_cb) | |
475 | packet->sent_cb(packet->sender, ret); | |
476 | ||
477 | qemu_free(packet); | |
478 | } | |
479 | } | |
480 | ||
481 | static void qemu_enqueue_packet(VLANClientState *sender, | |
482 | const uint8_t *buf, int size, | |
483 | NetPacketSent *sent_cb) | |
484 | { | |
485 | VLANPacket *packet; | |
486 | ||
487 | packet = qemu_malloc(sizeof(VLANPacket) + size); | |
488 | packet->sender = sender; | |
489 | packet->size = size; | |
490 | packet->sent_cb = sent_cb; | |
491 | memcpy(packet->data, buf, size); | |
492 | ||
493 | QTAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry); | |
494 | } | |
495 | ||
496 | ssize_t qemu_send_packet_async(VLANClientState *sender, | |
497 | const uint8_t *buf, int size, | |
498 | NetPacketSent *sent_cb) | |
499 | { | |
500 | int ret; | |
501 | ||
502 | if (sender->link_down || !sender->vlan) { | |
503 | return size; | |
504 | } | |
505 | ||
506 | #ifdef DEBUG_NET | |
507 | printf("qemu_send_packet_async:\n"); | |
508 | hex_dump(stdout, buf, size); | |
509 | #endif | |
510 | ||
511 | if (sender->vlan->delivering) { | |
512 | qemu_enqueue_packet(sender, buf, size, NULL); | |
513 | return size; | |
514 | } | |
515 | ||
516 | ret = qemu_deliver_packet(sender, buf, size); | |
517 | if (ret == 0 && sent_cb != NULL) { | |
518 | qemu_enqueue_packet(sender, buf, size, sent_cb); | |
519 | return 0; | |
520 | } | |
521 | ||
522 | qemu_flush_queued_packets(sender); | |
523 | ||
524 | return ret; | |
525 | } | |
526 | ||
527 | void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) | |
528 | { | |
529 | qemu_send_packet_async(vc, buf, size, NULL); | |
530 | } | |
531 | ||
532 | static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, | |
533 | int iovcnt) | |
534 | { | |
535 | uint8_t buffer[4096]; | |
536 | size_t offset = 0; | |
537 | int i; | |
538 | ||
539 | for (i = 0; i < iovcnt; i++) { | |
540 | size_t len; | |
541 | ||
542 | len = MIN(sizeof(buffer) - offset, iov[i].iov_len); | |
543 | memcpy(buffer + offset, iov[i].iov_base, len); | |
544 | offset += len; | |
545 | } | |
546 | ||
547 | return vc->receive(vc, buffer, offset); | |
548 | } | |
549 | ||
550 | static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt) | |
551 | { | |
552 | size_t offset = 0; | |
553 | int i; | |
554 | ||
555 | for (i = 0; i < iovcnt; i++) | |
556 | offset += iov[i].iov_len; | |
557 | return offset; | |
558 | } | |
559 | ||
560 | static int qemu_deliver_packet_iov(VLANClientState *sender, | |
561 | const struct iovec *iov, int iovcnt) | |
562 | { | |
563 | VLANClientState *vc; | |
564 | int ret = -1; | |
565 | ||
566 | sender->vlan->delivering = 1; | |
567 | ||
568 | QTAILQ_FOREACH(vc, &sender->vlan->clients, next) { | |
569 | ssize_t len; | |
570 | ||
571 | if (vc == sender) { | |
572 | continue; | |
573 | } | |
574 | ||
575 | if (vc->link_down) { | |
576 | ret = calc_iov_length(iov, iovcnt); | |
577 | continue; | |
578 | } | |
579 | ||
580 | if (vc->receive_iov) { | |
581 | len = vc->receive_iov(vc, iov, iovcnt); | |
582 | } else { | |
583 | len = vc_sendv_compat(vc, iov, iovcnt); | |
584 | } | |
585 | ||
586 | ret = (ret >= 0) ? ret : len; | |
587 | } | |
588 | ||
589 | sender->vlan->delivering = 0; | |
590 | ||
591 | return ret; | |
592 | } | |
593 | ||
594 | static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender, | |
595 | const struct iovec *iov, int iovcnt, | |
596 | NetPacketSent *sent_cb) | |
597 | { | |
598 | VLANPacket *packet; | |
599 | size_t max_len = 0; | |
600 | int i; | |
601 | ||
602 | max_len = calc_iov_length(iov, iovcnt); | |
603 | ||
604 | packet = qemu_malloc(sizeof(VLANPacket) + max_len); | |
605 | packet->sender = sender; | |
606 | packet->sent_cb = sent_cb; | |
607 | packet->size = 0; | |
608 | ||
609 | for (i = 0; i < iovcnt; i++) { | |
610 | size_t len = iov[i].iov_len; | |
611 | ||
612 | memcpy(packet->data + packet->size, iov[i].iov_base, len); | |
613 | packet->size += len; | |
614 | } | |
615 | ||
616 | QTAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry); | |
617 | ||
618 | return packet->size; | |
619 | } | |
620 | ||
621 | ssize_t qemu_sendv_packet_async(VLANClientState *sender, | |
622 | const struct iovec *iov, int iovcnt, | |
623 | NetPacketSent *sent_cb) | |
624 | { | |
625 | int ret; | |
626 | ||
627 | if (sender->link_down || !sender->vlan) { | |
628 | return calc_iov_length(iov, iovcnt); | |
629 | } | |
630 | ||
631 | if (sender->vlan->delivering) { | |
632 | return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL); | |
633 | } | |
634 | ||
635 | ret = qemu_deliver_packet_iov(sender, iov, iovcnt); | |
636 | if (ret == 0 && sent_cb != NULL) { | |
637 | qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb); | |
638 | return 0; | |
639 | } | |
640 | ||
641 | qemu_flush_queued_packets(sender); | |
642 | ||
643 | return ret; | |
644 | } | |
645 | ||
646 | ssize_t | |
647 | qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) | |
648 | { | |
649 | return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); | |
650 | } | |
651 | ||
652 | #if defined(CONFIG_SLIRP) | |
653 | ||
654 | /* slirp network adapter */ | |
655 | ||
656 | #define SLIRP_CFG_HOSTFWD 1 | |
657 | #define SLIRP_CFG_LEGACY 2 | |
658 | ||
659 | struct slirp_config_str { | |
660 | struct slirp_config_str *next; | |
661 | int flags; | |
662 | char str[1024]; | |
663 | int legacy_format; | |
664 | }; | |
665 | ||
666 | typedef struct SlirpState { | |
667 | QTAILQ_ENTRY(SlirpState) entry; | |
668 | VLANClientState *vc; | |
669 | Slirp *slirp; | |
670 | #ifndef _WIN32 | |
671 | char smb_dir[128]; | |
672 | #endif | |
673 | } SlirpState; | |
674 | ||
675 | static struct slirp_config_str *slirp_configs; | |
676 | const char *legacy_tftp_prefix; | |
677 | const char *legacy_bootp_filename; | |
678 | static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks = | |
679 | QTAILQ_HEAD_INITIALIZER(slirp_stacks); | |
680 | ||
681 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, | |
682 | int legacy_format); | |
683 | static int slirp_guestfwd(SlirpState *s, const char *config_str, | |
684 | int legacy_format); | |
685 | ||
686 | #ifndef _WIN32 | |
687 | static const char *legacy_smb_export; | |
688 | ||
689 | static int slirp_smb(SlirpState *s, const char *exported_dir, | |
690 | struct in_addr vserver_addr); | |
691 | static void slirp_smb_cleanup(SlirpState *s); | |
692 | #else | |
693 | static inline void slirp_smb_cleanup(SlirpState *s) { } | |
694 | #endif | |
695 | ||
696 | int slirp_can_output(void *opaque) | |
697 | { | |
698 | SlirpState *s = opaque; | |
699 | ||
700 | return qemu_can_send_packet(s->vc); | |
701 | } | |
702 | ||
703 | void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len) | |
704 | { | |
705 | SlirpState *s = opaque; | |
706 | ||
707 | #ifdef DEBUG_SLIRP | |
708 | printf("slirp output:\n"); | |
709 | hex_dump(stdout, pkt, pkt_len); | |
710 | #endif | |
711 | qemu_send_packet(s->vc, pkt, pkt_len); | |
712 | } | |
713 | ||
714 | static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size) | |
715 | { | |
716 | SlirpState *s = vc->opaque; | |
717 | ||
718 | #ifdef DEBUG_SLIRP | |
719 | printf("slirp input:\n"); | |
720 | hex_dump(stdout, buf, size); | |
721 | #endif | |
722 | slirp_input(s->slirp, buf, size); | |
723 | return size; | |
724 | } | |
725 | ||
726 | static void net_slirp_cleanup(VLANClientState *vc) | |
727 | { | |
728 | SlirpState *s = vc->opaque; | |
729 | ||
730 | slirp_cleanup(s->slirp); | |
731 | slirp_smb_cleanup(s); | |
732 | QTAILQ_REMOVE(&slirp_stacks, s, entry); | |
733 | qemu_free(s); | |
734 | } | |
735 | ||
736 | static int net_slirp_init(VLANState *vlan, const char *model, | |
737 | const char *name, int restricted, | |
738 | const char *vnetwork, const char *vhost, | |
739 | const char *vhostname, const char *tftp_export, | |
740 | const char *bootfile, const char *vdhcp_start, | |
741 | const char *vnameserver, const char *smb_export, | |
742 | const char *vsmbserver) | |
743 | { | |
744 | /* default settings according to historic slirp */ | |
745 | struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */ | |
746 | struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */ | |
747 | struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */ | |
748 | struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */ | |
749 | struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */ | |
750 | #ifndef _WIN32 | |
751 | struct in_addr smbsrv = { .s_addr = 0 }; | |
752 | #endif | |
753 | SlirpState *s; | |
754 | char buf[20]; | |
755 | uint32_t addr; | |
756 | int shift; | |
757 | char *end; | |
758 | struct slirp_config_str *config; | |
759 | ||
760 | if (!tftp_export) { | |
761 | tftp_export = legacy_tftp_prefix; | |
762 | } | |
763 | if (!bootfile) { | |
764 | bootfile = legacy_bootp_filename; | |
765 | } | |
766 | ||
767 | if (vnetwork) { | |
768 | if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) { | |
769 | if (!inet_aton(vnetwork, &net)) { | |
770 | return -1; | |
771 | } | |
772 | addr = ntohl(net.s_addr); | |
773 | if (!(addr & 0x80000000)) { | |
774 | mask.s_addr = htonl(0xff000000); /* class A */ | |
775 | } else if ((addr & 0xfff00000) == 0xac100000) { | |
776 | mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */ | |
777 | } else if ((addr & 0xc0000000) == 0x80000000) { | |
778 | mask.s_addr = htonl(0xffff0000); /* class B */ | |
779 | } else if ((addr & 0xffff0000) == 0xc0a80000) { | |
780 | mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */ | |
781 | } else if ((addr & 0xffff0000) == 0xc6120000) { | |
782 | mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */ | |
783 | } else if ((addr & 0xe0000000) == 0xe0000000) { | |
784 | mask.s_addr = htonl(0xffffff00); /* class C */ | |
785 | } else { | |
786 | mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */ | |
787 | } | |
788 | } else { | |
789 | if (!inet_aton(buf, &net)) { | |
790 | return -1; | |
791 | } | |
792 | shift = strtol(vnetwork, &end, 10); | |
793 | if (*end != '\0') { | |
794 | if (!inet_aton(vnetwork, &mask)) { | |
795 | return -1; | |
796 | } | |
797 | } else if (shift < 4 || shift > 32) { | |
798 | return -1; | |
799 | } else { | |
800 | mask.s_addr = htonl(0xffffffff << (32 - shift)); | |
801 | } | |
802 | } | |
803 | net.s_addr &= mask.s_addr; | |
804 | host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr); | |
805 | dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr); | |
806 | dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr); | |
807 | } | |
808 | ||
809 | if (vhost && !inet_aton(vhost, &host)) { | |
810 | return -1; | |
811 | } | |
812 | if ((host.s_addr & mask.s_addr) != net.s_addr) { | |
813 | return -1; | |
814 | } | |
815 | ||
816 | if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) { | |
817 | return -1; | |
818 | } | |
819 | if ((dhcp.s_addr & mask.s_addr) != net.s_addr || | |
820 | dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) { | |
821 | return -1; | |
822 | } | |
823 | ||
824 | if (vnameserver && !inet_aton(vnameserver, &dns)) { | |
825 | return -1; | |
826 | } | |
827 | if ((dns.s_addr & mask.s_addr) != net.s_addr || | |
828 | dns.s_addr == host.s_addr) { | |
829 | return -1; | |
830 | } | |
831 | ||
832 | #ifndef _WIN32 | |
833 | if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) { | |
834 | return -1; | |
835 | } | |
836 | #endif | |
837 | ||
838 | s = qemu_mallocz(sizeof(SlirpState)); | |
839 | s->slirp = slirp_init(restricted, net, mask, host, vhostname, | |
840 | tftp_export, bootfile, dhcp, dns, s); | |
841 | QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); | |
842 | ||
843 | for (config = slirp_configs; config; config = config->next) { | |
844 | if (config->flags & SLIRP_CFG_HOSTFWD) { | |
845 | if (slirp_hostfwd(s, config->str, | |
846 | config->flags & SLIRP_CFG_LEGACY) < 0) | |
847 | return -1; | |
848 | } else { | |
849 | if (slirp_guestfwd(s, config->str, | |
850 | config->flags & SLIRP_CFG_LEGACY) < 0) | |
851 | return -1; | |
852 | } | |
853 | } | |
854 | #ifndef _WIN32 | |
855 | if (!smb_export) { | |
856 | smb_export = legacy_smb_export; | |
857 | } | |
858 | if (smb_export) { | |
859 | if (slirp_smb(s, smb_export, smbsrv) < 0) | |
860 | return -1; | |
861 | } | |
862 | #endif | |
863 | ||
864 | s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL, | |
865 | net_slirp_cleanup, s); | |
866 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
867 | "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n'); | |
868 | return 0; | |
869 | } | |
870 | ||
871 | static SlirpState *slirp_lookup(Monitor *mon, const char *vlan, | |
872 | const char *stack) | |
873 | { | |
874 | VLANClientState *vc; | |
875 | ||
876 | if (vlan) { | |
877 | vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack); | |
878 | if (!vc) { | |
879 | return NULL; | |
880 | } | |
881 | if (strcmp(vc->model, "user")) { | |
882 | monitor_printf(mon, "invalid device specified\n"); | |
883 | return NULL; | |
884 | } | |
885 | return vc->opaque; | |
886 | } else { | |
887 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
888 | monitor_printf(mon, "user mode network stack not in use\n"); | |
889 | return NULL; | |
890 | } | |
891 | return QTAILQ_FIRST(&slirp_stacks); | |
892 | } | |
893 | } | |
894 | ||
895 | void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict) | |
896 | { | |
897 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
898 | int host_port; | |
899 | char buf[256] = ""; | |
900 | const char *src_str, *p; | |
901 | SlirpState *s; | |
902 | int is_udp = 0; | |
903 | int err; | |
904 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
905 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
906 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
907 | ||
908 | if (arg2) { | |
909 | s = slirp_lookup(mon, arg1, arg2); | |
910 | src_str = arg3; | |
911 | } else { | |
912 | s = slirp_lookup(mon, NULL, NULL); | |
913 | src_str = arg1; | |
914 | } | |
915 | if (!s) { | |
916 | return; | |
917 | } | |
918 | ||
919 | if (!src_str || !src_str[0]) | |
920 | goto fail_syntax; | |
921 | ||
922 | p = src_str; | |
923 | get_str_sep(buf, sizeof(buf), &p, ':'); | |
924 | ||
925 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
926 | is_udp = 0; | |
927 | } else if (!strcmp(buf, "udp")) { | |
928 | is_udp = 1; | |
929 | } else { | |
930 | goto fail_syntax; | |
931 | } | |
932 | ||
933 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
934 | goto fail_syntax; | |
935 | } | |
936 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
937 | goto fail_syntax; | |
938 | } | |
939 | ||
940 | host_port = atoi(p); | |
941 | ||
942 | err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp, | |
943 | host_addr, host_port); | |
944 | ||
945 | monitor_printf(mon, "host forwarding rule for %s %s\n", src_str, | |
946 | err ? "removed" : "not found"); | |
947 | return; | |
948 | ||
949 | fail_syntax: | |
950 | monitor_printf(mon, "invalid format\n"); | |
951 | } | |
952 | ||
953 | static int slirp_hostfwd(SlirpState *s, const char *redir_str, | |
954 | int legacy_format) | |
955 | { | |
956 | struct in_addr host_addr = { .s_addr = INADDR_ANY }; | |
957 | struct in_addr guest_addr = { .s_addr = 0 }; | |
958 | int host_port, guest_port; | |
959 | const char *p; | |
960 | char buf[256]; | |
961 | int is_udp; | |
962 | char *end; | |
963 | ||
964 | p = redir_str; | |
965 | if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
966 | goto fail_syntax; | |
967 | } | |
968 | if (!strcmp(buf, "tcp") || buf[0] == '\0') { | |
969 | is_udp = 0; | |
970 | } else if (!strcmp(buf, "udp")) { | |
971 | is_udp = 1; | |
972 | } else { | |
973 | goto fail_syntax; | |
974 | } | |
975 | ||
976 | if (!legacy_format) { | |
977 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
978 | goto fail_syntax; | |
979 | } | |
980 | if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) { | |
981 | goto fail_syntax; | |
982 | } | |
983 | } | |
984 | ||
985 | if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) { | |
986 | goto fail_syntax; | |
987 | } | |
988 | host_port = strtol(buf, &end, 0); | |
989 | if (*end != '\0' || host_port < 1 || host_port > 65535) { | |
990 | goto fail_syntax; | |
991 | } | |
992 | ||
993 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
994 | goto fail_syntax; | |
995 | } | |
996 | if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) { | |
997 | goto fail_syntax; | |
998 | } | |
999 | ||
1000 | guest_port = strtol(p, &end, 0); | |
1001 | if (*end != '\0' || guest_port < 1 || guest_port > 65535) { | |
1002 | goto fail_syntax; | |
1003 | } | |
1004 | ||
1005 | if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr, | |
1006 | guest_port) < 0) { | |
1007 | qemu_error("could not set up host forwarding rule '%s'\n", | |
1008 | redir_str); | |
1009 | return -1; | |
1010 | } | |
1011 | return 0; | |
1012 | ||
1013 | fail_syntax: | |
1014 | qemu_error("invalid host forwarding rule '%s'\n", redir_str); | |
1015 | return -1; | |
1016 | } | |
1017 | ||
1018 | void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict) | |
1019 | { | |
1020 | const char *redir_str; | |
1021 | SlirpState *s; | |
1022 | const char *arg1 = qdict_get_str(qdict, "arg1"); | |
1023 | const char *arg2 = qdict_get_try_str(qdict, "arg2"); | |
1024 | const char *arg3 = qdict_get_try_str(qdict, "arg3"); | |
1025 | ||
1026 | if (arg2) { | |
1027 | s = slirp_lookup(mon, arg1, arg2); | |
1028 | redir_str = arg3; | |
1029 | } else { | |
1030 | s = slirp_lookup(mon, NULL, NULL); | |
1031 | redir_str = arg1; | |
1032 | } | |
1033 | if (s) { | |
1034 | slirp_hostfwd(s, redir_str, 0); | |
1035 | } | |
1036 | ||
1037 | } | |
1038 | ||
1039 | int net_slirp_redir(const char *redir_str) | |
1040 | { | |
1041 | struct slirp_config_str *config; | |
1042 | ||
1043 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
1044 | config = qemu_malloc(sizeof(*config)); | |
1045 | pstrcpy(config->str, sizeof(config->str), redir_str); | |
1046 | config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY; | |
1047 | config->next = slirp_configs; | |
1048 | slirp_configs = config; | |
1049 | return 0; | |
1050 | } | |
1051 | ||
1052 | return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1); | |
1053 | } | |
1054 | ||
1055 | #ifndef _WIN32 | |
1056 | ||
1057 | /* automatic user mode samba server configuration */ | |
1058 | static void slirp_smb_cleanup(SlirpState *s) | |
1059 | { | |
1060 | char cmd[128]; | |
1061 | ||
1062 | if (s->smb_dir[0] != '\0') { | |
1063 | snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir); | |
1064 | system(cmd); | |
1065 | s->smb_dir[0] = '\0'; | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | static int slirp_smb(SlirpState* s, const char *exported_dir, | |
1070 | struct in_addr vserver_addr) | |
1071 | { | |
1072 | static int instance; | |
1073 | char smb_conf[128]; | |
1074 | char smb_cmdline[128]; | |
1075 | FILE *f; | |
1076 | ||
1077 | snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d", | |
1078 | (long)getpid(), instance++); | |
1079 | if (mkdir(s->smb_dir, 0700) < 0) { | |
1080 | qemu_error("could not create samba server dir '%s'\n", s->smb_dir); | |
1081 | return -1; | |
1082 | } | |
1083 | snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf"); | |
1084 | ||
1085 | f = fopen(smb_conf, "w"); | |
1086 | if (!f) { | |
1087 | slirp_smb_cleanup(s); | |
1088 | qemu_error("could not create samba server configuration file '%s'\n", | |
1089 | smb_conf); | |
1090 | return -1; | |
1091 | } | |
1092 | fprintf(f, | |
1093 | "[global]\n" | |
1094 | "private dir=%s\n" | |
1095 | "smb ports=0\n" | |
1096 | "socket address=127.0.0.1\n" | |
1097 | "pid directory=%s\n" | |
1098 | "lock directory=%s\n" | |
1099 | "log file=%s/log.smbd\n" | |
1100 | "smb passwd file=%s/smbpasswd\n" | |
1101 | "security = share\n" | |
1102 | "[qemu]\n" | |
1103 | "path=%s\n" | |
1104 | "read only=no\n" | |
1105 | "guest ok=yes\n", | |
1106 | s->smb_dir, | |
1107 | s->smb_dir, | |
1108 | s->smb_dir, | |
1109 | s->smb_dir, | |
1110 | s->smb_dir, | |
1111 | exported_dir | |
1112 | ); | |
1113 | fclose(f); | |
1114 | ||
1115 | snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", | |
1116 | SMBD_COMMAND, smb_conf); | |
1117 | ||
1118 | if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) { | |
1119 | slirp_smb_cleanup(s); | |
1120 | qemu_error("conflicting/invalid smbserver address\n"); | |
1121 | return -1; | |
1122 | } | |
1123 | return 0; | |
1124 | } | |
1125 | ||
1126 | /* automatic user mode samba server configuration (legacy interface) */ | |
1127 | int net_slirp_smb(const char *exported_dir) | |
1128 | { | |
1129 | struct in_addr vserver_addr = { .s_addr = 0 }; | |
1130 | ||
1131 | if (legacy_smb_export) { | |
1132 | fprintf(stderr, "-smb given twice\n"); | |
1133 | return -1; | |
1134 | } | |
1135 | legacy_smb_export = exported_dir; | |
1136 | if (!QTAILQ_EMPTY(&slirp_stacks)) { | |
1137 | return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir, | |
1138 | vserver_addr); | |
1139 | } | |
1140 | return 0; | |
1141 | } | |
1142 | ||
1143 | #endif /* !defined(_WIN32) */ | |
1144 | ||
1145 | struct GuestFwd { | |
1146 | CharDriverState *hd; | |
1147 | struct in_addr server; | |
1148 | int port; | |
1149 | Slirp *slirp; | |
1150 | }; | |
1151 | ||
1152 | static int guestfwd_can_read(void *opaque) | |
1153 | { | |
1154 | struct GuestFwd *fwd = opaque; | |
1155 | return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port); | |
1156 | } | |
1157 | ||
1158 | static void guestfwd_read(void *opaque, const uint8_t *buf, int size) | |
1159 | { | |
1160 | struct GuestFwd *fwd = opaque; | |
1161 | slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); | |
1162 | } | |
1163 | ||
1164 | static int slirp_guestfwd(SlirpState *s, const char *config_str, | |
1165 | int legacy_format) | |
1166 | { | |
1167 | struct in_addr server = { .s_addr = 0 }; | |
1168 | struct GuestFwd *fwd; | |
1169 | const char *p; | |
1170 | char buf[128]; | |
1171 | char *end; | |
1172 | int port; | |
1173 | ||
1174 | p = config_str; | |
1175 | if (legacy_format) { | |
1176 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
1177 | goto fail_syntax; | |
1178 | } | |
1179 | } else { | |
1180 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
1181 | goto fail_syntax; | |
1182 | } | |
1183 | if (strcmp(buf, "tcp") && buf[0] != '\0') { | |
1184 | goto fail_syntax; | |
1185 | } | |
1186 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { | |
1187 | goto fail_syntax; | |
1188 | } | |
1189 | if (buf[0] != '\0' && !inet_aton(buf, &server)) { | |
1190 | goto fail_syntax; | |
1191 | } | |
1192 | if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) { | |
1193 | goto fail_syntax; | |
1194 | } | |
1195 | } | |
1196 | port = strtol(buf, &end, 10); | |
1197 | if (*end != '\0' || port < 1 || port > 65535) { | |
1198 | goto fail_syntax; | |
1199 | } | |
1200 | ||
1201 | fwd = qemu_malloc(sizeof(struct GuestFwd)); | |
1202 | snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port); | |
1203 | fwd->hd = qemu_chr_open(buf, p, NULL); | |
1204 | if (!fwd->hd) { | |
1205 | qemu_error("could not open guest forwarding device '%s'\n", buf); | |
1206 | qemu_free(fwd); | |
1207 | return -1; | |
1208 | } | |
1209 | ||
1210 | if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) { | |
1211 | qemu_error("conflicting/invalid host:port in guest forwarding " | |
1212 | "rule '%s'\n", config_str); | |
1213 | qemu_free(fwd); | |
1214 | return -1; | |
1215 | } | |
1216 | fwd->server = server; | |
1217 | fwd->port = port; | |
1218 | fwd->slirp = s->slirp; | |
1219 | ||
1220 | qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read, | |
1221 | NULL, fwd); | |
1222 | return 0; | |
1223 | ||
1224 | fail_syntax: | |
1225 | qemu_error("invalid guest forwarding rule '%s'\n", config_str); | |
1226 | return -1; | |
1227 | } | |
1228 | ||
1229 | void do_info_usernet(Monitor *mon) | |
1230 | { | |
1231 | SlirpState *s; | |
1232 | ||
1233 | QTAILQ_FOREACH(s, &slirp_stacks, entry) { | |
1234 | monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name); | |
1235 | slirp_connection_info(s->slirp, mon); | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | #endif /* CONFIG_SLIRP */ | |
1240 | ||
1241 | #if !defined(_WIN32) | |
1242 | ||
1243 | typedef struct TAPState { | |
1244 | VLANClientState *vc; | |
1245 | int fd; | |
1246 | char down_script[1024]; | |
1247 | char down_script_arg[128]; | |
1248 | uint8_t buf[4096]; | |
1249 | unsigned int read_poll : 1; | |
1250 | unsigned int write_poll : 1; | |
1251 | } TAPState; | |
1252 | ||
1253 | static int launch_script(const char *setup_script, const char *ifname, int fd); | |
1254 | ||
1255 | static int tap_can_send(void *opaque); | |
1256 | static void tap_send(void *opaque); | |
1257 | static void tap_writable(void *opaque); | |
1258 | ||
1259 | static void tap_update_fd_handler(TAPState *s) | |
1260 | { | |
1261 | qemu_set_fd_handler2(s->fd, | |
1262 | s->read_poll ? tap_can_send : NULL, | |
1263 | s->read_poll ? tap_send : NULL, | |
1264 | s->write_poll ? tap_writable : NULL, | |
1265 | s); | |
1266 | } | |
1267 | ||
1268 | static void tap_read_poll(TAPState *s, int enable) | |
1269 | { | |
1270 | s->read_poll = !!enable; | |
1271 | tap_update_fd_handler(s); | |
1272 | } | |
1273 | ||
1274 | static void tap_write_poll(TAPState *s, int enable) | |
1275 | { | |
1276 | s->write_poll = !!enable; | |
1277 | tap_update_fd_handler(s); | |
1278 | } | |
1279 | ||
1280 | static void tap_writable(void *opaque) | |
1281 | { | |
1282 | TAPState *s = opaque; | |
1283 | ||
1284 | tap_write_poll(s, 0); | |
1285 | ||
1286 | qemu_flush_queued_packets(s->vc); | |
1287 | } | |
1288 | ||
1289 | static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov, | |
1290 | int iovcnt) | |
1291 | { | |
1292 | TAPState *s = vc->opaque; | |
1293 | ssize_t len; | |
1294 | ||
1295 | do { | |
1296 | len = writev(s->fd, iov, iovcnt); | |
1297 | } while (len == -1 && errno == EINTR); | |
1298 | ||
1299 | if (len == -1 && errno == EAGAIN) { | |
1300 | tap_write_poll(s, 1); | |
1301 | return 0; | |
1302 | } | |
1303 | ||
1304 | return len; | |
1305 | } | |
1306 | ||
1307 | static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size) | |
1308 | { | |
1309 | TAPState *s = vc->opaque; | |
1310 | ssize_t len; | |
1311 | ||
1312 | do { | |
1313 | len = write(s->fd, buf, size); | |
1314 | } while (len == -1 && (errno == EINTR || errno == EAGAIN)); | |
1315 | ||
1316 | return len; | |
1317 | } | |
1318 | ||
1319 | static int tap_can_send(void *opaque) | |
1320 | { | |
1321 | TAPState *s = opaque; | |
1322 | ||
1323 | return qemu_can_send_packet(s->vc); | |
1324 | } | |
1325 | ||
1326 | #ifdef __sun__ | |
1327 | static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen) | |
1328 | { | |
1329 | struct strbuf sbuf; | |
1330 | int f = 0; | |
1331 | ||
1332 | sbuf.maxlen = maxlen; | |
1333 | sbuf.buf = (char *)buf; | |
1334 | ||
1335 | return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1; | |
1336 | } | |
1337 | #else | |
1338 | static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen) | |
1339 | { | |
1340 | return read(tapfd, buf, maxlen); | |
1341 | } | |
1342 | #endif | |
1343 | ||
1344 | static void tap_send_completed(VLANClientState *vc, ssize_t len) | |
1345 | { | |
1346 | TAPState *s = vc->opaque; | |
1347 | tap_read_poll(s, 1); | |
1348 | } | |
1349 | ||
1350 | static void tap_send(void *opaque) | |
1351 | { | |
1352 | TAPState *s = opaque; | |
1353 | int size; | |
1354 | ||
1355 | do { | |
1356 | size = tap_read_packet(s->fd, s->buf, sizeof(s->buf)); | |
1357 | if (size <= 0) { | |
1358 | break; | |
1359 | } | |
1360 | ||
1361 | size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed); | |
1362 | if (size == 0) { | |
1363 | tap_read_poll(s, 0); | |
1364 | } | |
1365 | } while (size > 0); | |
1366 | } | |
1367 | ||
1368 | #ifdef TUNSETSNDBUF | |
1369 | /* sndbuf should be set to a value lower than the tx queue | |
1370 | * capacity of any destination network interface. | |
1371 | * Ethernet NICs generally have txqueuelen=1000, so 1Mb is | |
1372 | * a good default, given a 1500 byte MTU. | |
1373 | */ | |
1374 | #define TAP_DEFAULT_SNDBUF 1024*1024 | |
1375 | ||
1376 | static int tap_set_sndbuf(TAPState *s, QemuOpts *opts) | |
1377 | { | |
1378 | int sndbuf; | |
1379 | ||
1380 | sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF); | |
1381 | if (!sndbuf) { | |
1382 | sndbuf = INT_MAX; | |
1383 | } | |
1384 | ||
1385 | if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) { | |
1386 | qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno)); | |
1387 | return -1; | |
1388 | } | |
1389 | return 0; | |
1390 | } | |
1391 | #else | |
1392 | static int tap_set_sndbuf(TAPState *s, QemuOpts *opts) | |
1393 | { | |
1394 | return 0; | |
1395 | } | |
1396 | #endif /* TUNSETSNDBUF */ | |
1397 | ||
1398 | static void tap_cleanup(VLANClientState *vc) | |
1399 | { | |
1400 | TAPState *s = vc->opaque; | |
1401 | ||
1402 | qemu_purge_queued_packets(vc); | |
1403 | ||
1404 | if (s->down_script[0]) | |
1405 | launch_script(s->down_script, s->down_script_arg, s->fd); | |
1406 | ||
1407 | tap_read_poll(s, 0); | |
1408 | tap_write_poll(s, 0); | |
1409 | close(s->fd); | |
1410 | qemu_free(s); | |
1411 | } | |
1412 | ||
1413 | /* fd support */ | |
1414 | ||
1415 | static TAPState *net_tap_fd_init(VLANState *vlan, | |
1416 | const char *model, | |
1417 | const char *name, | |
1418 | int fd) | |
1419 | { | |
1420 | TAPState *s; | |
1421 | ||
1422 | s = qemu_mallocz(sizeof(TAPState)); | |
1423 | s->fd = fd; | |
1424 | s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive, | |
1425 | tap_receive_iov, tap_cleanup, s); | |
1426 | tap_read_poll(s, 1); | |
1427 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd); | |
1428 | return s; | |
1429 | } | |
1430 | ||
1431 | #if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__) | |
1432 | static int tap_open(char *ifname, int ifname_size) | |
1433 | { | |
1434 | int fd; | |
1435 | char *dev; | |
1436 | struct stat s; | |
1437 | ||
1438 | TFR(fd = open("/dev/tap", O_RDWR)); | |
1439 | if (fd < 0) { | |
1440 | fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n"); | |
1441 | return -1; | |
1442 | } | |
1443 | ||
1444 | fstat(fd, &s); | |
1445 | dev = devname(s.st_rdev, S_IFCHR); | |
1446 | pstrcpy(ifname, ifname_size, dev); | |
1447 | ||
1448 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
1449 | return fd; | |
1450 | } | |
1451 | #elif defined(__sun__) | |
1452 | #define TUNNEWPPA (('T'<<16) | 0x0001) | |
1453 | /* | |
1454 | * Allocate TAP device, returns opened fd. | |
1455 | * Stores dev name in the first arg(must be large enough). | |
1456 | */ | |
1457 | static int tap_alloc(char *dev, size_t dev_size) | |
1458 | { | |
1459 | int tap_fd, if_fd, ppa = -1; | |
1460 | static int ip_fd = 0; | |
1461 | char *ptr; | |
1462 | ||
1463 | static int arp_fd = 0; | |
1464 | int ip_muxid, arp_muxid; | |
1465 | struct strioctl strioc_if, strioc_ppa; | |
1466 | int link_type = I_PLINK;; | |
1467 | struct lifreq ifr; | |
1468 | char actual_name[32] = ""; | |
1469 | ||
1470 | memset(&ifr, 0x0, sizeof(ifr)); | |
1471 | ||
1472 | if( *dev ){ | |
1473 | ptr = dev; | |
1474 | while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++; | |
1475 | ppa = atoi(ptr); | |
1476 | } | |
1477 | ||
1478 | /* Check if IP device was opened */ | |
1479 | if( ip_fd ) | |
1480 | close(ip_fd); | |
1481 | ||
1482 | TFR(ip_fd = open("/dev/udp", O_RDWR, 0)); | |
1483 | if (ip_fd < 0) { | |
1484 | syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)"); | |
1485 | return -1; | |
1486 | } | |
1487 | ||
1488 | TFR(tap_fd = open("/dev/tap", O_RDWR, 0)); | |
1489 | if (tap_fd < 0) { | |
1490 | syslog(LOG_ERR, "Can't open /dev/tap"); | |
1491 | return -1; | |
1492 | } | |
1493 | ||
1494 | /* Assign a new PPA and get its unit number. */ | |
1495 | strioc_ppa.ic_cmd = TUNNEWPPA; | |
1496 | strioc_ppa.ic_timout = 0; | |
1497 | strioc_ppa.ic_len = sizeof(ppa); | |
1498 | strioc_ppa.ic_dp = (char *)&ppa; | |
1499 | if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0) | |
1500 | syslog (LOG_ERR, "Can't assign new interface"); | |
1501 | ||
1502 | TFR(if_fd = open("/dev/tap", O_RDWR, 0)); | |
1503 | if (if_fd < 0) { | |
1504 | syslog(LOG_ERR, "Can't open /dev/tap (2)"); | |
1505 | return -1; | |
1506 | } | |
1507 | if(ioctl(if_fd, I_PUSH, "ip") < 0){ | |
1508 | syslog(LOG_ERR, "Can't push IP module"); | |
1509 | return -1; | |
1510 | } | |
1511 | ||
1512 | if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) | |
1513 | syslog(LOG_ERR, "Can't get flags\n"); | |
1514 | ||
1515 | snprintf (actual_name, 32, "tap%d", ppa); | |
1516 | pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name); | |
1517 | ||
1518 | ifr.lifr_ppa = ppa; | |
1519 | /* Assign ppa according to the unit number returned by tun device */ | |
1520 | ||
1521 | if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0) | |
1522 | syslog (LOG_ERR, "Can't set PPA %d", ppa); | |
1523 | if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0) | |
1524 | syslog (LOG_ERR, "Can't get flags\n"); | |
1525 | /* Push arp module to if_fd */ | |
1526 | if (ioctl (if_fd, I_PUSH, "arp") < 0) | |
1527 | syslog (LOG_ERR, "Can't push ARP module (2)"); | |
1528 | ||
1529 | /* Push arp module to ip_fd */ | |
1530 | if (ioctl (ip_fd, I_POP, NULL) < 0) | |
1531 | syslog (LOG_ERR, "I_POP failed\n"); | |
1532 | if (ioctl (ip_fd, I_PUSH, "arp") < 0) | |
1533 | syslog (LOG_ERR, "Can't push ARP module (3)\n"); | |
1534 | /* Open arp_fd */ | |
1535 | TFR(arp_fd = open ("/dev/tap", O_RDWR, 0)); | |
1536 | if (arp_fd < 0) | |
1537 | syslog (LOG_ERR, "Can't open %s\n", "/dev/tap"); | |
1538 | ||
1539 | /* Set ifname to arp */ | |
1540 | strioc_if.ic_cmd = SIOCSLIFNAME; | |
1541 | strioc_if.ic_timout = 0; | |
1542 | strioc_if.ic_len = sizeof(ifr); | |
1543 | strioc_if.ic_dp = (char *)𝔦 | |
1544 | if (ioctl(arp_fd, I_STR, &strioc_if) < 0){ | |
1545 | syslog (LOG_ERR, "Can't set ifname to arp\n"); | |
1546 | } | |
1547 | ||
1548 | if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){ | |
1549 | syslog(LOG_ERR, "Can't link TAP device to IP"); | |
1550 | return -1; | |
1551 | } | |
1552 | ||
1553 | if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0) | |
1554 | syslog (LOG_ERR, "Can't link TAP device to ARP"); | |
1555 | ||
1556 | close (if_fd); | |
1557 | ||
1558 | memset(&ifr, 0x0, sizeof(ifr)); | |
1559 | pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name); | |
1560 | ifr.lifr_ip_muxid = ip_muxid; | |
1561 | ifr.lifr_arp_muxid = arp_muxid; | |
1562 | ||
1563 | if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0) | |
1564 | { | |
1565 | ioctl (ip_fd, I_PUNLINK , arp_muxid); | |
1566 | ioctl (ip_fd, I_PUNLINK, ip_muxid); | |
1567 | syslog (LOG_ERR, "Can't set multiplexor id"); | |
1568 | } | |
1569 | ||
1570 | snprintf(dev, dev_size, "tap%d", ppa); | |
1571 | return tap_fd; | |
1572 | } | |
1573 | ||
1574 | static int tap_open(char *ifname, int ifname_size) | |
1575 | { | |
1576 | char dev[10]=""; | |
1577 | int fd; | |
1578 | if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){ | |
1579 | fprintf(stderr, "Cannot allocate TAP device\n"); | |
1580 | return -1; | |
1581 | } | |
1582 | pstrcpy(ifname, ifname_size, dev); | |
1583 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
1584 | return fd; | |
1585 | } | |
1586 | #elif defined (_AIX) | |
1587 | static int tap_open(char *ifname, int ifname_size) | |
1588 | { | |
1589 | fprintf (stderr, "no tap on AIX\n"); | |
1590 | return -1; | |
1591 | } | |
1592 | #else | |
1593 | static int tap_open(char *ifname, int ifname_size) | |
1594 | { | |
1595 | struct ifreq ifr; | |
1596 | int fd, ret; | |
1597 | ||
1598 | TFR(fd = open("/dev/net/tun", O_RDWR)); | |
1599 | if (fd < 0) { | |
1600 | fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n"); | |
1601 | return -1; | |
1602 | } | |
1603 | memset(&ifr, 0, sizeof(ifr)); | |
1604 | ifr.ifr_flags = IFF_TAP | IFF_NO_PI; | |
1605 | if (ifname[0] != '\0') | |
1606 | pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname); | |
1607 | else | |
1608 | pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d"); | |
1609 | ret = ioctl(fd, TUNSETIFF, (void *) &ifr); | |
1610 | if (ret != 0) { | |
1611 | fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n"); | |
1612 | close(fd); | |
1613 | return -1; | |
1614 | } | |
1615 | pstrcpy(ifname, ifname_size, ifr.ifr_name); | |
1616 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
1617 | return fd; | |
1618 | } | |
1619 | #endif | |
1620 | ||
1621 | static int launch_script(const char *setup_script, const char *ifname, int fd) | |
1622 | { | |
1623 | sigset_t oldmask, mask; | |
1624 | int pid, status; | |
1625 | char *args[3]; | |
1626 | char **parg; | |
1627 | ||
1628 | sigemptyset(&mask); | |
1629 | sigaddset(&mask, SIGCHLD); | |
1630 | sigprocmask(SIG_BLOCK, &mask, &oldmask); | |
1631 | ||
1632 | /* try to launch network script */ | |
1633 | pid = fork(); | |
1634 | if (pid == 0) { | |
1635 | int open_max = sysconf(_SC_OPEN_MAX), i; | |
1636 | ||
1637 | for (i = 0; i < open_max; i++) { | |
1638 | if (i != STDIN_FILENO && | |
1639 | i != STDOUT_FILENO && | |
1640 | i != STDERR_FILENO && | |
1641 | i != fd) { | |
1642 | close(i); | |
1643 | } | |
1644 | } | |
1645 | parg = args; | |
1646 | *parg++ = (char *)setup_script; | |
1647 | *parg++ = (char *)ifname; | |
1648 | *parg++ = NULL; | |
1649 | execv(setup_script, args); | |
1650 | _exit(1); | |
1651 | } else if (pid > 0) { | |
1652 | while (waitpid(pid, &status, 0) != pid) { | |
1653 | /* loop */ | |
1654 | } | |
1655 | sigprocmask(SIG_SETMASK, &oldmask, NULL); | |
1656 | ||
1657 | if (WIFEXITED(status) && WEXITSTATUS(status) == 0) { | |
1658 | return 0; | |
1659 | } | |
1660 | } | |
1661 | fprintf(stderr, "%s: could not launch network script\n", setup_script); | |
1662 | return -1; | |
1663 | } | |
1664 | ||
1665 | static TAPState *net_tap_init(VLANState *vlan, const char *model, | |
1666 | const char *name, const char *ifname1, | |
1667 | const char *setup_script, const char *down_script) | |
1668 | { | |
1669 | TAPState *s; | |
1670 | int fd; | |
1671 | char ifname[128]; | |
1672 | ||
1673 | if (ifname1 != NULL) | |
1674 | pstrcpy(ifname, sizeof(ifname), ifname1); | |
1675 | else | |
1676 | ifname[0] = '\0'; | |
1677 | TFR(fd = tap_open(ifname, sizeof(ifname))); | |
1678 | if (fd < 0) | |
1679 | return NULL; | |
1680 | ||
1681 | if (!setup_script || !strcmp(setup_script, "no")) | |
1682 | setup_script = ""; | |
1683 | if (setup_script[0] != '\0' && | |
1684 | launch_script(setup_script, ifname, fd)) { | |
1685 | return NULL; | |
1686 | } | |
1687 | s = net_tap_fd_init(vlan, model, name, fd); | |
1688 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
1689 | "ifname=%s,script=%s,downscript=%s", | |
1690 | ifname, setup_script, down_script); | |
1691 | if (down_script && strcmp(down_script, "no")) { | |
1692 | snprintf(s->down_script, sizeof(s->down_script), "%s", down_script); | |
1693 | snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname); | |
1694 | } | |
1695 | return s; | |
1696 | } | |
1697 | ||
1698 | #endif /* !_WIN32 */ | |
1699 | ||
1700 | #if defined(CONFIG_VDE) | |
1701 | typedef struct VDEState { | |
1702 | VLANClientState *vc; | |
1703 | VDECONN *vde; | |
1704 | } VDEState; | |
1705 | ||
1706 | static void vde_to_qemu(void *opaque) | |
1707 | { | |
1708 | VDEState *s = opaque; | |
1709 | uint8_t buf[4096]; | |
1710 | int size; | |
1711 | ||
1712 | size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0); | |
1713 | if (size > 0) { | |
1714 | qemu_send_packet(s->vc, buf, size); | |
1715 | } | |
1716 | } | |
1717 | ||
1718 | static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size) | |
1719 | { | |
1720 | VDEState *s = vc->opaque; | |
1721 | ssize_t ret; | |
1722 | ||
1723 | do { | |
1724 | ret = vde_send(s->vde, (const char *)buf, size, 0); | |
1725 | } while (ret < 0 && errno == EINTR); | |
1726 | ||
1727 | return ret; | |
1728 | } | |
1729 | ||
1730 | static void vde_cleanup(VLANClientState *vc) | |
1731 | { | |
1732 | VDEState *s = vc->opaque; | |
1733 | qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL); | |
1734 | vde_close(s->vde); | |
1735 | qemu_free(s); | |
1736 | } | |
1737 | ||
1738 | static int net_vde_init(VLANState *vlan, const char *model, | |
1739 | const char *name, const char *sock, | |
1740 | int port, const char *group, int mode) | |
1741 | { | |
1742 | VDEState *s; | |
1743 | char *init_group = (char *)group; | |
1744 | char *init_sock = (char *)sock; | |
1745 | ||
1746 | struct vde_open_args args = { | |
1747 | .port = port, | |
1748 | .group = init_group, | |
1749 | .mode = mode, | |
1750 | }; | |
1751 | ||
1752 | s = qemu_mallocz(sizeof(VDEState)); | |
1753 | s->vde = vde_open(init_sock, (char *)"QEMU", &args); | |
1754 | if (!s->vde){ | |
1755 | free(s); | |
1756 | return -1; | |
1757 | } | |
1758 | s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive, | |
1759 | NULL, vde_cleanup, s); | |
1760 | qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s); | |
1761 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d", | |
1762 | sock, vde_datafd(s->vde)); | |
1763 | return 0; | |
1764 | } | |
1765 | #endif | |
1766 | ||
1767 | /* network connection */ | |
1768 | typedef struct NetSocketState { | |
1769 | VLANClientState *vc; | |
1770 | int fd; | |
1771 | int state; /* 0 = getting length, 1 = getting data */ | |
1772 | unsigned int index; | |
1773 | unsigned int packet_len; | |
1774 | uint8_t buf[4096]; | |
1775 | struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ | |
1776 | } NetSocketState; | |
1777 | ||
1778 | typedef struct NetSocketListenState { | |
1779 | VLANState *vlan; | |
1780 | char *model; | |
1781 | char *name; | |
1782 | int fd; | |
1783 | } NetSocketListenState; | |
1784 | ||
1785 | /* XXX: we consider we can send the whole packet without blocking */ | |
1786 | static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size) | |
1787 | { | |
1788 | NetSocketState *s = vc->opaque; | |
1789 | uint32_t len; | |
1790 | len = htonl(size); | |
1791 | ||
1792 | send_all(s->fd, (const uint8_t *)&len, sizeof(len)); | |
1793 | return send_all(s->fd, buf, size); | |
1794 | } | |
1795 | ||
1796 | static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size) | |
1797 | { | |
1798 | NetSocketState *s = vc->opaque; | |
1799 | ||
1800 | return sendto(s->fd, (const void *)buf, size, 0, | |
1801 | (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst)); | |
1802 | } | |
1803 | ||
1804 | static void net_socket_send(void *opaque) | |
1805 | { | |
1806 | NetSocketState *s = opaque; | |
1807 | int size, err; | |
1808 | unsigned l; | |
1809 | uint8_t buf1[4096]; | |
1810 | const uint8_t *buf; | |
1811 | ||
1812 | size = recv(s->fd, (void *)buf1, sizeof(buf1), 0); | |
1813 | if (size < 0) { | |
1814 | err = socket_error(); | |
1815 | if (err != EWOULDBLOCK) | |
1816 | goto eoc; | |
1817 | } else if (size == 0) { | |
1818 | /* end of connection */ | |
1819 | eoc: | |
1820 | qemu_set_fd_handler(s->fd, NULL, NULL, NULL); | |
1821 | closesocket(s->fd); | |
1822 | return; | |
1823 | } | |
1824 | buf = buf1; | |
1825 | while (size > 0) { | |
1826 | /* reassemble a packet from the network */ | |
1827 | switch(s->state) { | |
1828 | case 0: | |
1829 | l = 4 - s->index; | |
1830 | if (l > size) | |
1831 | l = size; | |
1832 | memcpy(s->buf + s->index, buf, l); | |
1833 | buf += l; | |
1834 | size -= l; | |
1835 | s->index += l; | |
1836 | if (s->index == 4) { | |
1837 | /* got length */ | |
1838 | s->packet_len = ntohl(*(uint32_t *)s->buf); | |
1839 | s->index = 0; | |
1840 | s->state = 1; | |
1841 | } | |
1842 | break; | |
1843 | case 1: | |
1844 | l = s->packet_len - s->index; | |
1845 | if (l > size) | |
1846 | l = size; | |
1847 | if (s->index + l <= sizeof(s->buf)) { | |
1848 | memcpy(s->buf + s->index, buf, l); | |
1849 | } else { | |
1850 | fprintf(stderr, "serious error: oversized packet received," | |
1851 | "connection terminated.\n"); | |
1852 | s->state = 0; | |
1853 | goto eoc; | |
1854 | } | |
1855 | ||
1856 | s->index += l; | |
1857 | buf += l; | |
1858 | size -= l; | |
1859 | if (s->index >= s->packet_len) { | |
1860 | qemu_send_packet(s->vc, s->buf, s->packet_len); | |
1861 | s->index = 0; | |
1862 | s->state = 0; | |
1863 | } | |
1864 | break; | |
1865 | } | |
1866 | } | |
1867 | } | |
1868 | ||
1869 | static void net_socket_send_dgram(void *opaque) | |
1870 | { | |
1871 | NetSocketState *s = opaque; | |
1872 | int size; | |
1873 | ||
1874 | size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0); | |
1875 | if (size < 0) | |
1876 | return; | |
1877 | if (size == 0) { | |
1878 | /* end of connection */ | |
1879 | qemu_set_fd_handler(s->fd, NULL, NULL, NULL); | |
1880 | return; | |
1881 | } | |
1882 | qemu_send_packet(s->vc, s->buf, size); | |
1883 | } | |
1884 | ||
1885 | static int net_socket_mcast_create(struct sockaddr_in *mcastaddr) | |
1886 | { | |
1887 | struct ip_mreq imr; | |
1888 | int fd; | |
1889 | int val, ret; | |
1890 | if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) { | |
1891 | fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n", | |
1892 | inet_ntoa(mcastaddr->sin_addr), | |
1893 | (int)ntohl(mcastaddr->sin_addr.s_addr)); | |
1894 | return -1; | |
1895 | ||
1896 | } | |
1897 | fd = socket(PF_INET, SOCK_DGRAM, 0); | |
1898 | if (fd < 0) { | |
1899 | perror("socket(PF_INET, SOCK_DGRAM)"); | |
1900 | return -1; | |
1901 | } | |
1902 | ||
1903 | val = 1; | |
1904 | ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, | |
1905 | (const char *)&val, sizeof(val)); | |
1906 | if (ret < 0) { | |
1907 | perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)"); | |
1908 | goto fail; | |
1909 | } | |
1910 | ||
1911 | ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); | |
1912 | if (ret < 0) { | |
1913 | perror("bind"); | |
1914 | goto fail; | |
1915 | } | |
1916 | ||
1917 | /* Add host to multicast group */ | |
1918 | imr.imr_multiaddr = mcastaddr->sin_addr; | |
1919 | imr.imr_interface.s_addr = htonl(INADDR_ANY); | |
1920 | ||
1921 | ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, | |
1922 | (const char *)&imr, sizeof(struct ip_mreq)); | |
1923 | if (ret < 0) { | |
1924 | perror("setsockopt(IP_ADD_MEMBERSHIP)"); | |
1925 | goto fail; | |
1926 | } | |
1927 | ||
1928 | /* Force mcast msgs to loopback (eg. several QEMUs in same host */ | |
1929 | val = 1; | |
1930 | ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, | |
1931 | (const char *)&val, sizeof(val)); | |
1932 | if (ret < 0) { | |
1933 | perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)"); | |
1934 | goto fail; | |
1935 | } | |
1936 | ||
1937 | socket_set_nonblock(fd); | |
1938 | return fd; | |
1939 | fail: | |
1940 | if (fd >= 0) | |
1941 | closesocket(fd); | |
1942 | return -1; | |
1943 | } | |
1944 | ||
1945 | static void net_socket_cleanup(VLANClientState *vc) | |
1946 | { | |
1947 | NetSocketState *s = vc->opaque; | |
1948 | qemu_set_fd_handler(s->fd, NULL, NULL, NULL); | |
1949 | close(s->fd); | |
1950 | qemu_free(s); | |
1951 | } | |
1952 | ||
1953 | static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan, | |
1954 | const char *model, | |
1955 | const char *name, | |
1956 | int fd, int is_connected) | |
1957 | { | |
1958 | struct sockaddr_in saddr; | |
1959 | int newfd; | |
1960 | socklen_t saddr_len; | |
1961 | NetSocketState *s; | |
1962 | ||
1963 | /* fd passed: multicast: "learn" dgram_dst address from bound address and save it | |
1964 | * Because this may be "shared" socket from a "master" process, datagrams would be recv() | |
1965 | * by ONLY ONE process: we must "clone" this dgram socket --jjo | |
1966 | */ | |
1967 | ||
1968 | if (is_connected) { | |
1969 | if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) { | |
1970 | /* must be bound */ | |
1971 | if (saddr.sin_addr.s_addr==0) { | |
1972 | fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n", | |
1973 | fd); | |
1974 | return NULL; | |
1975 | } | |
1976 | /* clone dgram socket */ | |
1977 | newfd = net_socket_mcast_create(&saddr); | |
1978 | if (newfd < 0) { | |
1979 | /* error already reported by net_socket_mcast_create() */ | |
1980 | close(fd); | |
1981 | return NULL; | |
1982 | } | |
1983 | /* clone newfd to fd, close newfd */ | |
1984 | dup2(newfd, fd); | |
1985 | close(newfd); | |
1986 | ||
1987 | } else { | |
1988 | fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n", | |
1989 | fd, strerror(errno)); | |
1990 | return NULL; | |
1991 | } | |
1992 | } | |
1993 | ||
1994 | s = qemu_mallocz(sizeof(NetSocketState)); | |
1995 | s->fd = fd; | |
1996 | ||
1997 | s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram, | |
1998 | NULL, net_socket_cleanup, s); | |
1999 | qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s); | |
2000 | ||
2001 | /* mcast: save bound address as dst */ | |
2002 | if (is_connected) s->dgram_dst=saddr; | |
2003 | ||
2004 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
2005 | "socket: fd=%d (%s mcast=%s:%d)", | |
2006 | fd, is_connected? "cloned" : "", | |
2007 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
2008 | return s; | |
2009 | } | |
2010 | ||
2011 | static void net_socket_connect(void *opaque) | |
2012 | { | |
2013 | NetSocketState *s = opaque; | |
2014 | qemu_set_fd_handler(s->fd, net_socket_send, NULL, s); | |
2015 | } | |
2016 | ||
2017 | static NetSocketState *net_socket_fd_init_stream(VLANState *vlan, | |
2018 | const char *model, | |
2019 | const char *name, | |
2020 | int fd, int is_connected) | |
2021 | { | |
2022 | NetSocketState *s; | |
2023 | s = qemu_mallocz(sizeof(NetSocketState)); | |
2024 | s->fd = fd; | |
2025 | s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive, | |
2026 | NULL, net_socket_cleanup, s); | |
2027 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
2028 | "socket: fd=%d", fd); | |
2029 | if (is_connected) { | |
2030 | net_socket_connect(s); | |
2031 | } else { | |
2032 | qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s); | |
2033 | } | |
2034 | return s; | |
2035 | } | |
2036 | ||
2037 | static NetSocketState *net_socket_fd_init(VLANState *vlan, | |
2038 | const char *model, const char *name, | |
2039 | int fd, int is_connected) | |
2040 | { | |
2041 | int so_type = -1, optlen=sizeof(so_type); | |
2042 | ||
2043 | if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, | |
2044 | (socklen_t *)&optlen)< 0) { | |
2045 | fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd); | |
2046 | return NULL; | |
2047 | } | |
2048 | switch(so_type) { | |
2049 | case SOCK_DGRAM: | |
2050 | return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected); | |
2051 | case SOCK_STREAM: | |
2052 | return net_socket_fd_init_stream(vlan, model, name, fd, is_connected); | |
2053 | default: | |
2054 | /* who knows ... this could be a eg. a pty, do warn and continue as stream */ | |
2055 | fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd); | |
2056 | return net_socket_fd_init_stream(vlan, model, name, fd, is_connected); | |
2057 | } | |
2058 | return NULL; | |
2059 | } | |
2060 | ||
2061 | static void net_socket_accept(void *opaque) | |
2062 | { | |
2063 | NetSocketListenState *s = opaque; | |
2064 | NetSocketState *s1; | |
2065 | struct sockaddr_in saddr; | |
2066 | socklen_t len; | |
2067 | int fd; | |
2068 | ||
2069 | for(;;) { | |
2070 | len = sizeof(saddr); | |
2071 | fd = accept(s->fd, (struct sockaddr *)&saddr, &len); | |
2072 | if (fd < 0 && errno != EINTR) { | |
2073 | return; | |
2074 | } else if (fd >= 0) { | |
2075 | break; | |
2076 | } | |
2077 | } | |
2078 | s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1); | |
2079 | if (!s1) { | |
2080 | closesocket(fd); | |
2081 | } else { | |
2082 | snprintf(s1->vc->info_str, sizeof(s1->vc->info_str), | |
2083 | "socket: connection from %s:%d", | |
2084 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
2085 | } | |
2086 | } | |
2087 | ||
2088 | static int net_socket_listen_init(VLANState *vlan, | |
2089 | const char *model, | |
2090 | const char *name, | |
2091 | const char *host_str) | |
2092 | { | |
2093 | NetSocketListenState *s; | |
2094 | int fd, val, ret; | |
2095 | struct sockaddr_in saddr; | |
2096 | ||
2097 | if (parse_host_port(&saddr, host_str) < 0) | |
2098 | return -1; | |
2099 | ||
2100 | s = qemu_mallocz(sizeof(NetSocketListenState)); | |
2101 | ||
2102 | fd = socket(PF_INET, SOCK_STREAM, 0); | |
2103 | if (fd < 0) { | |
2104 | perror("socket"); | |
2105 | return -1; | |
2106 | } | |
2107 | socket_set_nonblock(fd); | |
2108 | ||
2109 | /* allow fast reuse */ | |
2110 | val = 1; | |
2111 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val)); | |
2112 | ||
2113 | ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); | |
2114 | if (ret < 0) { | |
2115 | perror("bind"); | |
2116 | return -1; | |
2117 | } | |
2118 | ret = listen(fd, 0); | |
2119 | if (ret < 0) { | |
2120 | perror("listen"); | |
2121 | return -1; | |
2122 | } | |
2123 | s->vlan = vlan; | |
2124 | s->model = qemu_strdup(model); | |
2125 | s->name = name ? qemu_strdup(name) : NULL; | |
2126 | s->fd = fd; | |
2127 | qemu_set_fd_handler(fd, net_socket_accept, NULL, s); | |
2128 | return 0; | |
2129 | } | |
2130 | ||
2131 | static int net_socket_connect_init(VLANState *vlan, | |
2132 | const char *model, | |
2133 | const char *name, | |
2134 | const char *host_str) | |
2135 | { | |
2136 | NetSocketState *s; | |
2137 | int fd, connected, ret, err; | |
2138 | struct sockaddr_in saddr; | |
2139 | ||
2140 | if (parse_host_port(&saddr, host_str) < 0) | |
2141 | return -1; | |
2142 | ||
2143 | fd = socket(PF_INET, SOCK_STREAM, 0); | |
2144 | if (fd < 0) { | |
2145 | perror("socket"); | |
2146 | return -1; | |
2147 | } | |
2148 | socket_set_nonblock(fd); | |
2149 | ||
2150 | connected = 0; | |
2151 | for(;;) { | |
2152 | ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); | |
2153 | if (ret < 0) { | |
2154 | err = socket_error(); | |
2155 | if (err == EINTR || err == EWOULDBLOCK) { | |
2156 | } else if (err == EINPROGRESS) { | |
2157 | break; | |
2158 | #ifdef _WIN32 | |
2159 | } else if (err == WSAEALREADY) { | |
2160 | break; | |
2161 | #endif | |
2162 | } else { | |
2163 | perror("connect"); | |
2164 | closesocket(fd); | |
2165 | return -1; | |
2166 | } | |
2167 | } else { | |
2168 | connected = 1; | |
2169 | break; | |
2170 | } | |
2171 | } | |
2172 | s = net_socket_fd_init(vlan, model, name, fd, connected); | |
2173 | if (!s) | |
2174 | return -1; | |
2175 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
2176 | "socket: connect to %s:%d", | |
2177 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
2178 | return 0; | |
2179 | } | |
2180 | ||
2181 | static int net_socket_mcast_init(VLANState *vlan, | |
2182 | const char *model, | |
2183 | const char *name, | |
2184 | const char *host_str) | |
2185 | { | |
2186 | NetSocketState *s; | |
2187 | int fd; | |
2188 | struct sockaddr_in saddr; | |
2189 | ||
2190 | if (parse_host_port(&saddr, host_str) < 0) | |
2191 | return -1; | |
2192 | ||
2193 | ||
2194 | fd = net_socket_mcast_create(&saddr); | |
2195 | if (fd < 0) | |
2196 | return -1; | |
2197 | ||
2198 | s = net_socket_fd_init(vlan, model, name, fd, 0); | |
2199 | if (!s) | |
2200 | return -1; | |
2201 | ||
2202 | s->dgram_dst = saddr; | |
2203 | ||
2204 | snprintf(s->vc->info_str, sizeof(s->vc->info_str), | |
2205 | "socket: mcast=%s:%d", | |
2206 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
2207 | return 0; | |
2208 | ||
2209 | } | |
2210 | ||
2211 | typedef struct DumpState { | |
2212 | VLANClientState *pcap_vc; | |
2213 | int fd; | |
2214 | int pcap_caplen; | |
2215 | } DumpState; | |
2216 | ||
2217 | #define PCAP_MAGIC 0xa1b2c3d4 | |
2218 | ||
2219 | struct pcap_file_hdr { | |
2220 | uint32_t magic; | |
2221 | uint16_t version_major; | |
2222 | uint16_t version_minor; | |
2223 | int32_t thiszone; | |
2224 | uint32_t sigfigs; | |
2225 | uint32_t snaplen; | |
2226 | uint32_t linktype; | |
2227 | }; | |
2228 | ||
2229 | struct pcap_sf_pkthdr { | |
2230 | struct { | |
2231 | int32_t tv_sec; | |
2232 | int32_t tv_usec; | |
2233 | } ts; | |
2234 | uint32_t caplen; | |
2235 | uint32_t len; | |
2236 | }; | |
2237 | ||
2238 | static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size) | |
2239 | { | |
2240 | DumpState *s = vc->opaque; | |
2241 | struct pcap_sf_pkthdr hdr; | |
2242 | int64_t ts; | |
2243 | int caplen; | |
2244 | ||
2245 | /* Early return in case of previous error. */ | |
2246 | if (s->fd < 0) { | |
2247 | return size; | |
2248 | } | |
2249 | ||
2250 | ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec()); | |
2251 | caplen = size > s->pcap_caplen ? s->pcap_caplen : size; | |
2252 | ||
2253 | hdr.ts.tv_sec = ts / 1000000; | |
2254 | hdr.ts.tv_usec = ts % 1000000; | |
2255 | hdr.caplen = caplen; | |
2256 | hdr.len = size; | |
2257 | if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) || | |
2258 | write(s->fd, buf, caplen) != caplen) { | |
2259 | qemu_log("-net dump write error - stop dump\n"); | |
2260 | close(s->fd); | |
2261 | s->fd = -1; | |
2262 | } | |
2263 | ||
2264 | return size; | |
2265 | } | |
2266 | ||
2267 | static void net_dump_cleanup(VLANClientState *vc) | |
2268 | { | |
2269 | DumpState *s = vc->opaque; | |
2270 | ||
2271 | close(s->fd); | |
2272 | qemu_free(s); | |
2273 | } | |
2274 | ||
2275 | static int net_dump_init(VLANState *vlan, const char *device, | |
2276 | const char *name, const char *filename, int len) | |
2277 | { | |
2278 | struct pcap_file_hdr hdr; | |
2279 | DumpState *s; | |
2280 | ||
2281 | s = qemu_malloc(sizeof(DumpState)); | |
2282 | ||
2283 | s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644); | |
2284 | if (s->fd < 0) { | |
2285 | qemu_error("-net dump: can't open %s\n", filename); | |
2286 | return -1; | |
2287 | } | |
2288 | ||
2289 | s->pcap_caplen = len; | |
2290 | ||
2291 | hdr.magic = PCAP_MAGIC; | |
2292 | hdr.version_major = 2; | |
2293 | hdr.version_minor = 4; | |
2294 | hdr.thiszone = 0; | |
2295 | hdr.sigfigs = 0; | |
2296 | hdr.snaplen = s->pcap_caplen; | |
2297 | hdr.linktype = 1; | |
2298 | ||
2299 | if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) { | |
2300 | qemu_error("-net dump write error: %s\n", strerror(errno)); | |
2301 | close(s->fd); | |
2302 | qemu_free(s); | |
2303 | return -1; | |
2304 | } | |
2305 | ||
2306 | s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL, | |
2307 | net_dump_cleanup, s); | |
2308 | snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str), | |
2309 | "dump to %s (len=%d)", filename, len); | |
2310 | return 0; | |
2311 | } | |
2312 | ||
2313 | /* find or alloc a new VLAN */ | |
2314 | VLANState *qemu_find_vlan(int id, int allocate) | |
2315 | { | |
2316 | VLANState *vlan; | |
2317 | ||
2318 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
2319 | if (vlan->id == id) { | |
2320 | return vlan; | |
2321 | } | |
2322 | } | |
2323 | ||
2324 | if (!allocate) { | |
2325 | return NULL; | |
2326 | } | |
2327 | ||
2328 | vlan = qemu_mallocz(sizeof(VLANState)); | |
2329 | vlan->id = id; | |
2330 | QTAILQ_INIT(&vlan->clients); | |
2331 | QTAILQ_INIT(&vlan->send_queue); | |
2332 | ||
2333 | QTAILQ_INSERT_TAIL(&vlans, vlan, next); | |
2334 | ||
2335 | return vlan; | |
2336 | } | |
2337 | ||
2338 | static int nic_get_free_idx(void) | |
2339 | { | |
2340 | int index; | |
2341 | ||
2342 | for (index = 0; index < MAX_NICS; index++) | |
2343 | if (!nd_table[index].used) | |
2344 | return index; | |
2345 | return -1; | |
2346 | } | |
2347 | ||
2348 | int qemu_show_nic_models(const char *arg, const char *const *models) | |
2349 | { | |
2350 | int i; | |
2351 | ||
2352 | if (!arg || strcmp(arg, "?")) | |
2353 | return 0; | |
2354 | ||
2355 | fprintf(stderr, "qemu: Supported NIC models: "); | |
2356 | for (i = 0 ; models[i]; i++) | |
2357 | fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); | |
2358 | return 1; | |
2359 | } | |
2360 | ||
2361 | void qemu_check_nic_model(NICInfo *nd, const char *model) | |
2362 | { | |
2363 | const char *models[2]; | |
2364 | ||
2365 | models[0] = model; | |
2366 | models[1] = NULL; | |
2367 | ||
2368 | if (qemu_show_nic_models(nd->model, models)) | |
2369 | exit(0); | |
2370 | if (qemu_find_nic_model(nd, models, model) < 0) | |
2371 | exit(1); | |
2372 | } | |
2373 | ||
2374 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, | |
2375 | const char *default_model) | |
2376 | { | |
2377 | int i; | |
2378 | ||
2379 | if (!nd->model) | |
2380 | nd->model = qemu_strdup(default_model); | |
2381 | ||
2382 | for (i = 0 ; models[i]; i++) { | |
2383 | if (strcmp(nd->model, models[i]) == 0) | |
2384 | return i; | |
2385 | } | |
2386 | ||
2387 | qemu_error("qemu: Unsupported NIC model: %s\n", nd->model); | |
2388 | return -1; | |
2389 | } | |
2390 | ||
2391 | static int net_handle_fd_param(Monitor *mon, const char *param) | |
2392 | { | |
2393 | if (!qemu_isdigit(param[0])) { | |
2394 | int fd; | |
2395 | ||
2396 | fd = monitor_get_fd(mon, param); | |
2397 | if (fd == -1) { | |
2398 | qemu_error("No file descriptor named %s found", param); | |
2399 | return -1; | |
2400 | } | |
2401 | ||
2402 | return fd; | |
2403 | } else { | |
2404 | return strtol(param, NULL, 0); | |
2405 | } | |
2406 | } | |
2407 | ||
2408 | static int net_init_nic(QemuOpts *opts, Monitor *mon, const char *name) | |
2409 | { | |
2410 | int idx; | |
2411 | NICInfo *nd; | |
2412 | ||
2413 | idx = nic_get_free_idx(); | |
2414 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
2415 | qemu_error("Too Many NICs\n"); | |
2416 | return -1; | |
2417 | } | |
2418 | ||
2419 | nd = &nd_table[idx]; | |
2420 | ||
2421 | memset(nd, 0, sizeof(*nd)); | |
2422 | ||
2423 | nd->vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); | |
2424 | ||
2425 | if (name) { | |
2426 | nd->name = qemu_strdup(name); | |
2427 | } | |
2428 | if (qemu_opt_get(opts, "model")) { | |
2429 | nd->model = qemu_strdup(qemu_opt_get(opts, "model")); | |
2430 | } | |
2431 | if (qemu_opt_get(opts, "addr")) { | |
2432 | nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr")); | |
2433 | } | |
2434 | ||
2435 | nd->macaddr[0] = 0x52; | |
2436 | nd->macaddr[1] = 0x54; | |
2437 | nd->macaddr[2] = 0x00; | |
2438 | nd->macaddr[3] = 0x12; | |
2439 | nd->macaddr[4] = 0x34; | |
2440 | nd->macaddr[5] = 0x56 + idx; | |
2441 | ||
2442 | if (qemu_opt_get(opts, "macaddr") && | |
2443 | parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) { | |
2444 | qemu_error("invalid syntax for ethernet address\n"); | |
2445 | return -1; | |
2446 | } | |
2447 | ||
2448 | nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED); | |
2449 | if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED && | |
2450 | (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) { | |
2451 | qemu_error("invalid # of vectors: %d\n", nd->nvectors); | |
2452 | return -1; | |
2453 | } | |
2454 | ||
2455 | nd->used = 1; | |
2456 | nd->vlan->nb_guest_devs++; | |
2457 | nb_nics++; | |
2458 | ||
2459 | return idx; | |
2460 | } | |
2461 | ||
2462 | #if defined(CONFIG_SLIRP) | |
2463 | static int net_init_slirp_configs(const char *name, const char *value, void *opaque) | |
2464 | { | |
2465 | struct slirp_config_str *config; | |
2466 | ||
2467 | if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) { | |
2468 | return 0; | |
2469 | } | |
2470 | ||
2471 | config = qemu_mallocz(sizeof(*config)); | |
2472 | ||
2473 | pstrcpy(config->str, sizeof(config->str), value); | |
2474 | ||
2475 | if (!strcmp(name, "hostfwd")) { | |
2476 | config->flags = SLIRP_CFG_HOSTFWD; | |
2477 | } | |
2478 | ||
2479 | config->next = slirp_configs; | |
2480 | slirp_configs = config; | |
2481 | ||
2482 | return 0; | |
2483 | } | |
2484 | ||
2485 | static int net_init_slirp(QemuOpts *opts, Monitor *mon, const char *name) | |
2486 | { | |
2487 | VLANState *vlan; | |
2488 | struct slirp_config_str *config; | |
2489 | const char *vhost; | |
2490 | const char *vhostname; | |
2491 | const char *vdhcp_start; | |
2492 | const char *vnamesrv; | |
2493 | const char *tftp_export; | |
2494 | const char *bootfile; | |
2495 | const char *smb_export; | |
2496 | const char *vsmbsrv; | |
2497 | char *vnet = NULL; | |
2498 | int restricted = 0; | |
2499 | int ret; | |
2500 | ||
2501 | vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); | |
2502 | ||
2503 | vhost = qemu_opt_get(opts, "host"); | |
2504 | vhostname = qemu_opt_get(opts, "hostname"); | |
2505 | vdhcp_start = qemu_opt_get(opts, "dhcpstart"); | |
2506 | vnamesrv = qemu_opt_get(opts, "dns"); | |
2507 | tftp_export = qemu_opt_get(opts, "tftp"); | |
2508 | bootfile = qemu_opt_get(opts, "bootfile"); | |
2509 | smb_export = qemu_opt_get(opts, "smb"); | |
2510 | vsmbsrv = qemu_opt_get(opts, "smbserver"); | |
2511 | ||
2512 | if (qemu_opt_get(opts, "ip")) { | |
2513 | const char *ip = qemu_opt_get(opts, "ip"); | |
2514 | int l = strlen(ip) + strlen("/24") + 1; | |
2515 | ||
2516 | vnet = qemu_malloc(l); | |
2517 | ||
2518 | /* emulate legacy ip= parameter */ | |
2519 | pstrcpy(vnet, l, ip); | |
2520 | pstrcat(vnet, l, "/24"); | |
2521 | } | |
2522 | ||
2523 | if (qemu_opt_get(opts, "net")) { | |
2524 | if (vnet) { | |
2525 | qemu_free(vnet); | |
2526 | } | |
2527 | vnet = qemu_strdup(qemu_opt_get(opts, "net")); | |
2528 | } | |
2529 | ||
2530 | if (qemu_opt_get(opts, "restrict") && | |
2531 | qemu_opt_get(opts, "restrict")[0] == 'y') { | |
2532 | restricted = 1; | |
2533 | } | |
2534 | ||
2535 | qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0); | |
2536 | ||
2537 | ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost, | |
2538 | vhostname, tftp_export, bootfile, vdhcp_start, | |
2539 | vnamesrv, smb_export, vsmbsrv); | |
2540 | ||
2541 | while (slirp_configs) { | |
2542 | config = slirp_configs; | |
2543 | slirp_configs = config->next; | |
2544 | qemu_free(config); | |
2545 | } | |
2546 | ||
2547 | if (ret != -1) { | |
2548 | vlan->nb_host_devs++; | |
2549 | } | |
2550 | ||
2551 | qemu_free(vnet); | |
2552 | ||
2553 | return ret; | |
2554 | } | |
2555 | #endif /* CONFIG_SLIRP */ | |
2556 | ||
2557 | #ifdef _WIN32 | |
2558 | static int net_init_tap_win32(QemuOpts *opts, Monitor *mon, const char *name) | |
2559 | { | |
2560 | VLANState *vlan; | |
2561 | const char *ifname; | |
2562 | ||
2563 | vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); | |
2564 | ||
2565 | ifname = qemu_opt_get(opts, "ifname"); | |
2566 | ||
2567 | if (!ifname) { | |
2568 | qemu_error("tap: no interface name\n"); | |
2569 | return -1; | |
2570 | } | |
2571 | ||
2572 | if (tap_win32_init(vlan, "tap", name, ifname) == -1) { | |
2573 | return -1; | |
2574 | } | |
2575 | ||
2576 | vlan->nb_host_devs++; | |
2577 | ||
2578 | return 0; | |
2579 | } | |
2580 | #elif !defined(_AIX) | |
2581 | static int net_init_tap(QemuOpts *opts, Monitor *mon, const char *name) | |
2582 | { | |
2583 | VLANState *vlan; | |
2584 | TAPState *s; | |
2585 | ||
2586 | vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); | |
2587 | ||
2588 | if (qemu_opt_get(opts, "fd")) { | |
2589 | int fd; | |
2590 | ||
2591 | if (qemu_opt_get(opts, "ifname") || | |
2592 | qemu_opt_get(opts, "script") || | |
2593 | qemu_opt_get(opts, "downscript")) { | |
2594 | qemu_error("ifname=, script= and downscript= is invalid with fd=\n"); | |
2595 | return -1; | |
2596 | } | |
2597 | ||
2598 | fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd")); | |
2599 | if (fd == -1) { | |
2600 | return -1; | |
2601 | } | |
2602 | ||
2603 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
2604 | ||
2605 | s = net_tap_fd_init(vlan, "tap", name, fd); | |
2606 | if (!s) { | |
2607 | close(fd); | |
2608 | } | |
2609 | } else { | |
2610 | const char *ifname, *script, *downscript; | |
2611 | ||
2612 | ifname = qemu_opt_get(opts, "ifname"); | |
2613 | script = qemu_opt_get(opts, "script"); | |
2614 | downscript = qemu_opt_get(opts, "downscript"); | |
2615 | ||
2616 | if (!script) { | |
2617 | script = DEFAULT_NETWORK_SCRIPT; | |
2618 | } | |
2619 | if (!downscript) { | |
2620 | downscript = DEFAULT_NETWORK_DOWN_SCRIPT; | |
2621 | } | |
2622 | ||
2623 | s = net_tap_init(vlan, "tap", name, ifname, script, downscript); | |
2624 | } | |
2625 | ||
2626 | if (!s) { | |
2627 | return -1; | |
2628 | } | |
2629 | ||
2630 | if (tap_set_sndbuf(s, opts) < 0) { | |
2631 | return -1; | |
2632 | } | |
2633 | ||
2634 | vlan->nb_host_devs++; | |
2635 | ||
2636 | return 0; | |
2637 | } | |
2638 | #endif | |
2639 | ||
2640 | static int net_init_socket(QemuOpts *opts, Monitor *mon, const char *name) | |
2641 | { | |
2642 | VLANState *vlan; | |
2643 | ||
2644 | vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); | |
2645 | ||
2646 | if (qemu_opt_get(opts, "fd")) { | |
2647 | int fd; | |
2648 | ||
2649 | if (qemu_opt_get(opts, "listen") || | |
2650 | qemu_opt_get(opts, "connect") || | |
2651 | qemu_opt_get(opts, "mcast")) { | |
2652 | qemu_error("listen=, connect= and mcast= is invalid with fd=\n"); | |
2653 | return -1; | |
2654 | } | |
2655 | ||
2656 | fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd")); | |
2657 | if (fd == -1) { | |
2658 | return -1; | |
2659 | } | |
2660 | ||
2661 | if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) { | |
2662 | close(fd); | |
2663 | return -1; | |
2664 | } | |
2665 | } else if (qemu_opt_get(opts, "listen")) { | |
2666 | const char *listen; | |
2667 | ||
2668 | if (qemu_opt_get(opts, "fd") || | |
2669 | qemu_opt_get(opts, "connect") || | |
2670 | qemu_opt_get(opts, "mcast")) { | |
2671 | qemu_error("fd=, connect= and mcast= is invalid with listen=\n"); | |
2672 | return -1; | |
2673 | } | |
2674 | ||
2675 | listen = qemu_opt_get(opts, "listen"); | |
2676 | ||
2677 | if (net_socket_listen_init(vlan, "socket", name, listen) == -1) { | |
2678 | return -1; | |
2679 | } | |
2680 | } else if (qemu_opt_get(opts, "connect")) { | |
2681 | const char *connect; | |
2682 | ||
2683 | if (qemu_opt_get(opts, "fd") || | |
2684 | qemu_opt_get(opts, "listen") || | |
2685 | qemu_opt_get(opts, "mcast")) { | |
2686 | qemu_error("fd=, listen= and mcast= is invalid with connect=\n"); | |
2687 | return -1; | |
2688 | } | |
2689 | ||
2690 | connect = qemu_opt_get(opts, "connect"); | |
2691 | ||
2692 | if (net_socket_connect_init(vlan, "socket", name, connect) == -1) { | |
2693 | return -1; | |
2694 | } | |
2695 | } else if (qemu_opt_get(opts, "mcast")) { | |
2696 | const char *mcast; | |
2697 | ||
2698 | if (qemu_opt_get(opts, "fd") || | |
2699 | qemu_opt_get(opts, "connect") || | |
2700 | qemu_opt_get(opts, "listen")) { | |
2701 | qemu_error("fd=, connect= and listen= is invalid with mcast=\n"); | |
2702 | return -1; | |
2703 | } | |
2704 | ||
2705 | mcast = qemu_opt_get(opts, "mcast"); | |
2706 | ||
2707 | if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) { | |
2708 | return -1; | |
2709 | } | |
2710 | } else { | |
2711 | qemu_error("-socket requires fd=, listen=, connect= or mcast=\n"); | |
2712 | return -1; | |
2713 | } | |
2714 | ||
2715 | vlan->nb_host_devs++; | |
2716 | ||
2717 | return 0; | |
2718 | } | |
2719 | ||
2720 | #ifdef CONFIG_VDE | |
2721 | static int net_init_vde(QemuOpts *opts, Monitor *mon, const char *name) | |
2722 | { | |
2723 | VLANState *vlan; | |
2724 | const char *sock; | |
2725 | const char *group; | |
2726 | int port, mode; | |
2727 | ||
2728 | vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); | |
2729 | ||
2730 | sock = qemu_opt_get(opts, "sock"); | |
2731 | group = qemu_opt_get(opts, "group"); | |
2732 | ||
2733 | port = qemu_opt_get_number(opts, "port", 0); | |
2734 | mode = qemu_opt_get_number(opts, "mode", 0700); | |
2735 | ||
2736 | if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) { | |
2737 | return -1; | |
2738 | } | |
2739 | ||
2740 | vlan->nb_host_devs++; | |
2741 | ||
2742 | return 0; | |
2743 | } | |
2744 | #endif | |
2745 | ||
2746 | static int net_init_dump(QemuOpts *opts, Monitor *mon, const char *name) | |
2747 | { | |
2748 | VLANState *vlan; | |
2749 | int len; | |
2750 | const char *file; | |
2751 | char def_file[128]; | |
2752 | ||
2753 | vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); | |
2754 | ||
2755 | file = qemu_opt_get(opts, "file"); | |
2756 | if (!file) { | |
2757 | snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id); | |
2758 | file = def_file; | |
2759 | } | |
2760 | ||
2761 | len = qemu_opt_get_size(opts, "len", 65536); | |
2762 | ||
2763 | return net_dump_init(vlan, "dump", name, file, len); | |
2764 | } | |
2765 | ||
2766 | #define NET_COMMON_PARAMS_DESC \ | |
2767 | { \ | |
2768 | .name = "type", \ | |
2769 | .type = QEMU_OPT_STRING, \ | |
2770 | .help = "net client type (nic, tap etc.)", \ | |
2771 | }, { \ | |
2772 | .name = "vlan", \ | |
2773 | .type = QEMU_OPT_NUMBER, \ | |
2774 | .help = "vlan number", \ | |
2775 | }, { \ | |
2776 | .name = "name", \ | |
2777 | .type = QEMU_OPT_STRING, \ | |
2778 | .help = "identifier for monitor commands", \ | |
2779 | } | |
2780 | ||
2781 | typedef int (*net_client_init_func)(QemuOpts *opts, | |
2782 | Monitor *mon, | |
2783 | const char *name); | |
2784 | ||
2785 | /* magic number, but compiler will warn if too small */ | |
2786 | #define NET_MAX_DESC 20 | |
2787 | ||
2788 | static struct { | |
2789 | const char *type; | |
2790 | net_client_init_func init; | |
2791 | QemuOptDesc desc[NET_MAX_DESC]; | |
2792 | } net_client_types[] = { | |
2793 | { | |
2794 | .type = "none", | |
2795 | .desc = { | |
2796 | NET_COMMON_PARAMS_DESC, | |
2797 | { /* end of list */ } | |
2798 | }, | |
2799 | }, { | |
2800 | .type = "nic", | |
2801 | .init = net_init_nic, | |
2802 | .desc = { | |
2803 | NET_COMMON_PARAMS_DESC, | |
2804 | { | |
2805 | .name = "macaddr", | |
2806 | .type = QEMU_OPT_STRING, | |
2807 | .help = "MAC address", | |
2808 | }, { | |
2809 | .name = "model", | |
2810 | .type = QEMU_OPT_STRING, | |
2811 | .help = "device model (e1000, rtl8139, virtio etc.)", | |
2812 | }, { | |
2813 | .name = "addr", | |
2814 | .type = QEMU_OPT_STRING, | |
2815 | .help = "PCI device address", | |
2816 | }, { | |
2817 | .name = "vectors", | |
2818 | .type = QEMU_OPT_NUMBER, | |
2819 | .help = "number of MSI-x vectors, 0 to disable MSI-X", | |
2820 | }, | |
2821 | { /* end of list */ } | |
2822 | }, | |
2823 | #ifdef CONFIG_SLIRP | |
2824 | }, { | |
2825 | .type = "user", | |
2826 | .init = net_init_slirp, | |
2827 | .desc = { | |
2828 | NET_COMMON_PARAMS_DESC, | |
2829 | { | |
2830 | .name = "hostname", | |
2831 | .type = QEMU_OPT_STRING, | |
2832 | .help = "client hostname reported by the builtin DHCP server", | |
2833 | }, { | |
2834 | .name = "restrict", | |
2835 | .type = QEMU_OPT_STRING, | |
2836 | .help = "isolate the guest from the host (y|yes|n|no)", | |
2837 | }, { | |
2838 | .name = "ip", | |
2839 | .type = QEMU_OPT_STRING, | |
2840 | .help = "legacy parameter, use net= instead", | |
2841 | }, { | |
2842 | .name = "net", | |
2843 | .type = QEMU_OPT_STRING, | |
2844 | .help = "IP address and optional netmask", | |
2845 | }, { | |
2846 | .name = "host", | |
2847 | .type = QEMU_OPT_STRING, | |
2848 | .help = "guest-visible address of the host", | |
2849 | }, { | |
2850 | .name = "tftp", | |
2851 | .type = QEMU_OPT_STRING, | |
2852 | .help = "root directory of the built-in TFTP server", | |
2853 | }, { | |
2854 | .name = "bootfile", | |
2855 | .type = QEMU_OPT_STRING, | |
2856 | .help = "BOOTP filename, for use with tftp=", | |
2857 | }, { | |
2858 | .name = "dhcpstart", | |
2859 | .type = QEMU_OPT_STRING, | |
2860 | .help = "the first of the 16 IPs the built-in DHCP server can assign", | |
2861 | }, { | |
2862 | .name = "dns", | |
2863 | .type = QEMU_OPT_STRING, | |
2864 | .help = "guest-visible address of the virtual nameserver", | |
2865 | }, { | |
2866 | .name = "smb", | |
2867 | .type = QEMU_OPT_STRING, | |
2868 | .help = "root directory of the built-in SMB server", | |
2869 | }, { | |
2870 | .name = "smbserver", | |
2871 | .type = QEMU_OPT_STRING, | |
2872 | .help = "IP address of the built-in SMB server", | |
2873 | }, { | |
2874 | .name = "hostfwd", | |
2875 | .type = QEMU_OPT_STRING, | |
2876 | .help = "guest port number to forward incoming TCP or UDP connections", | |
2877 | }, { | |
2878 | .name = "guestfwd", | |
2879 | .type = QEMU_OPT_STRING, | |
2880 | .help = "IP address and port to forward guest TCP connections", | |
2881 | }, | |
2882 | { /* end of list */ } | |
2883 | }, | |
2884 | #endif | |
2885 | #ifdef _WIN32 | |
2886 | }, { | |
2887 | .type = "tap", | |
2888 | .init = net_init_tap_win32, | |
2889 | .desc = { | |
2890 | NET_COMMON_PARAMS_DESC, | |
2891 | { | |
2892 | .name = "ifname", | |
2893 | .type = QEMU_OPT_STRING, | |
2894 | .help = "interface name", | |
2895 | }, | |
2896 | { /* end of list */ } | |
2897 | }, | |
2898 | #elif !defined(_AIX) | |
2899 | }, { | |
2900 | .type = "tap", | |
2901 | .init = net_init_tap, | |
2902 | .desc = { | |
2903 | NET_COMMON_PARAMS_DESC, | |
2904 | { | |
2905 | .name = "fd", | |
2906 | .type = QEMU_OPT_STRING, | |
2907 | .help = "file descriptor of an already opened tap", | |
2908 | }, { | |
2909 | .name = "ifname", | |
2910 | .type = QEMU_OPT_STRING, | |
2911 | .help = "interface name", | |
2912 | }, { | |
2913 | .name = "script", | |
2914 | .type = QEMU_OPT_STRING, | |
2915 | .help = "script to initialize the interface", | |
2916 | }, { | |
2917 | .name = "downscript", | |
2918 | .type = QEMU_OPT_STRING, | |
2919 | .help = "script to shut down the interface", | |
2920 | #ifdef TUNSETSNDBUF | |
2921 | }, { | |
2922 | .name = "sndbuf", | |
2923 | .type = QEMU_OPT_SIZE, | |
2924 | .help = "send buffer limit" | |
2925 | #endif | |
2926 | }, | |
2927 | { /* end of list */ } | |
2928 | }, | |
2929 | #endif | |
2930 | }, { | |
2931 | .type = "socket", | |
2932 | .init = net_init_socket, | |
2933 | .desc = { | |
2934 | NET_COMMON_PARAMS_DESC, | |
2935 | { | |
2936 | .name = "fd", | |
2937 | .type = QEMU_OPT_STRING, | |
2938 | .help = "file descriptor of an already opened socket", | |
2939 | }, { | |
2940 | .name = "listen", | |
2941 | .type = QEMU_OPT_STRING, | |
2942 | .help = "port number, and optional hostname, to listen on", | |
2943 | }, { | |
2944 | .name = "connect", | |
2945 | .type = QEMU_OPT_STRING, | |
2946 | .help = "port number, and optional hostname, to connect to", | |
2947 | }, { | |
2948 | .name = "mcast", | |
2949 | .type = QEMU_OPT_STRING, | |
2950 | .help = "UDP multicast address and port number", | |
2951 | }, | |
2952 | { /* end of list */ } | |
2953 | }, | |
2954 | #ifdef CONFIG_VDE | |
2955 | }, { | |
2956 | .type = "vde", | |
2957 | .init = net_init_vde, | |
2958 | .desc = { | |
2959 | NET_COMMON_PARAMS_DESC, | |
2960 | { | |
2961 | .name = "sock", | |
2962 | .type = QEMU_OPT_STRING, | |
2963 | .help = "socket path", | |
2964 | }, { | |
2965 | .name = "port", | |
2966 | .type = QEMU_OPT_NUMBER, | |
2967 | .help = "port number", | |
2968 | }, { | |
2969 | .name = "group", | |
2970 | .type = QEMU_OPT_STRING, | |
2971 | .help = "group owner of socket", | |
2972 | }, { | |
2973 | .name = "mode", | |
2974 | .type = QEMU_OPT_NUMBER, | |
2975 | .help = "permissions for socket", | |
2976 | }, | |
2977 | { /* end of list */ } | |
2978 | }, | |
2979 | #endif | |
2980 | }, { | |
2981 | .type = "dump", | |
2982 | .init = net_init_dump, | |
2983 | .desc = { | |
2984 | NET_COMMON_PARAMS_DESC, | |
2985 | { | |
2986 | .name = "len", | |
2987 | .type = QEMU_OPT_SIZE, | |
2988 | .help = "per-packet size limit (64k default)", | |
2989 | }, { | |
2990 | .name = "file", | |
2991 | .type = QEMU_OPT_STRING, | |
2992 | .help = "dump file path (default is qemu-vlan0.pcap)", | |
2993 | }, | |
2994 | { /* end of list */ } | |
2995 | }, | |
2996 | }, | |
2997 | { /* end of list */ } | |
2998 | }; | |
2999 | ||
3000 | int net_client_init(Monitor *mon, QemuOpts *opts) | |
3001 | { | |
3002 | const char *name; | |
3003 | const char *type; | |
3004 | int i; | |
3005 | ||
3006 | type = qemu_opt_get(opts, "type"); | |
3007 | if (!type) { | |
3008 | qemu_error("No type specified for -net\n"); | |
3009 | return -1; | |
3010 | } | |
3011 | ||
3012 | name = qemu_opts_id(opts); | |
3013 | if (!name) { | |
3014 | name = qemu_opt_get(opts, "name"); | |
3015 | } | |
3016 | ||
3017 | for (i = 0; net_client_types[i].type != NULL; i++) { | |
3018 | if (!strcmp(net_client_types[i].type, type)) { | |
3019 | if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) { | |
3020 | return -1; | |
3021 | } | |
3022 | ||
3023 | if (net_client_types[i].init) { | |
3024 | return net_client_types[i].init(opts, mon, name); | |
3025 | } else { | |
3026 | return 0; | |
3027 | } | |
3028 | } | |
3029 | } | |
3030 | ||
3031 | qemu_error("Invalid -net type '%s'\n", type); | |
3032 | return -1; | |
3033 | } | |
3034 | ||
3035 | void net_client_uninit(NICInfo *nd) | |
3036 | { | |
3037 | if (nd->vlan) { | |
3038 | nd->vlan->nb_guest_devs--; | |
3039 | } | |
3040 | nb_nics--; | |
3041 | ||
3042 | qemu_free(nd->model); | |
3043 | qemu_free(nd->name); | |
3044 | qemu_free(nd->devaddr); | |
3045 | ||
3046 | nd->used = 0; | |
3047 | } | |
3048 | ||
3049 | static int net_host_check_device(const char *device) | |
3050 | { | |
3051 | int i; | |
3052 | const char *valid_param_list[] = { "tap", "socket", "dump" | |
3053 | #ifdef CONFIG_SLIRP | |
3054 | ,"user" | |
3055 | #endif | |
3056 | #ifdef CONFIG_VDE | |
3057 | ,"vde" | |
3058 | #endif | |
3059 | }; | |
3060 | for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { | |
3061 | if (!strncmp(valid_param_list[i], device, | |
3062 | strlen(valid_param_list[i]))) | |
3063 | return 1; | |
3064 | } | |
3065 | ||
3066 | return 0; | |
3067 | } | |
3068 | ||
3069 | void net_host_device_add(Monitor *mon, const QDict *qdict) | |
3070 | { | |
3071 | const char *device = qdict_get_str(qdict, "device"); | |
3072 | const char *opts_str = qdict_get_try_str(qdict, "opts"); | |
3073 | QemuOpts *opts; | |
3074 | ||
3075 | if (!net_host_check_device(device)) { | |
3076 | monitor_printf(mon, "invalid host network device %s\n", device); | |
3077 | return; | |
3078 | } | |
3079 | ||
3080 | opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL); | |
3081 | if (!opts) { | |
3082 | monitor_printf(mon, "parsing network options '%s' failed\n", | |
3083 | opts_str ? opts_str : ""); | |
3084 | return; | |
3085 | } | |
3086 | ||
3087 | qemu_opt_set(opts, "type", device); | |
3088 | ||
3089 | if (net_client_init(mon, opts) < 0) { | |
3090 | monitor_printf(mon, "adding host network device %s failed\n", device); | |
3091 | } | |
3092 | } | |
3093 | ||
3094 | void net_host_device_remove(Monitor *mon, const QDict *qdict) | |
3095 | { | |
3096 | VLANClientState *vc; | |
3097 | int vlan_id = qdict_get_int(qdict, "vlan_id"); | |
3098 | const char *device = qdict_get_str(qdict, "device"); | |
3099 | ||
3100 | vc = qemu_find_vlan_client_by_name(mon, vlan_id, device); | |
3101 | if (!vc) { | |
3102 | return; | |
3103 | } | |
3104 | if (!net_host_check_device(vc->model)) { | |
3105 | monitor_printf(mon, "invalid host network device %s\n", device); | |
3106 | return; | |
3107 | } | |
3108 | qemu_del_vlan_client(vc); | |
3109 | } | |
3110 | ||
3111 | void net_set_boot_mask(int net_boot_mask) | |
3112 | { | |
3113 | int i; | |
3114 | ||
3115 | /* Only the first four NICs may be bootable */ | |
3116 | net_boot_mask = net_boot_mask & 0xF; | |
3117 | ||
3118 | for (i = 0; i < nb_nics; i++) { | |
3119 | if (net_boot_mask & (1 << i)) { | |
3120 | nd_table[i].bootable = 1; | |
3121 | net_boot_mask &= ~(1 << i); | |
3122 | } | |
3123 | } | |
3124 | ||
3125 | if (net_boot_mask) { | |
3126 | fprintf(stderr, "Cannot boot from non-existent NIC\n"); | |
3127 | exit(1); | |
3128 | } | |
3129 | } | |
3130 | ||
3131 | void do_info_network(Monitor *mon) | |
3132 | { | |
3133 | VLANState *vlan; | |
3134 | ||
3135 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
3136 | VLANClientState *vc; | |
3137 | ||
3138 | monitor_printf(mon, "VLAN %d devices:\n", vlan->id); | |
3139 | ||
3140 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
3141 | monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str); | |
3142 | } | |
3143 | } | |
3144 | } | |
3145 | ||
3146 | void do_set_link(Monitor *mon, const QDict *qdict) | |
3147 | { | |
3148 | VLANState *vlan; | |
3149 | VLANClientState *vc = NULL; | |
3150 | const char *name = qdict_get_str(qdict, "name"); | |
3151 | const char *up_or_down = qdict_get_str(qdict, "up_or_down"); | |
3152 | ||
3153 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
3154 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
3155 | if (strcmp(vc->name, name) == 0) { | |
3156 | goto done; | |
3157 | } | |
3158 | } | |
3159 | } | |
3160 | done: | |
3161 | ||
3162 | if (!vc) { | |
3163 | monitor_printf(mon, "could not find network device '%s'\n", name); | |
3164 | return; | |
3165 | } | |
3166 | ||
3167 | if (strcmp(up_or_down, "up") == 0) | |
3168 | vc->link_down = 0; | |
3169 | else if (strcmp(up_or_down, "down") == 0) | |
3170 | vc->link_down = 1; | |
3171 | else | |
3172 | monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' " | |
3173 | "valid\n", up_or_down); | |
3174 | ||
3175 | if (vc->link_status_changed) | |
3176 | vc->link_status_changed(vc); | |
3177 | } | |
3178 | ||
3179 | void net_cleanup(void) | |
3180 | { | |
3181 | VLANState *vlan; | |
3182 | ||
3183 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
3184 | VLANClientState *vc, *next_vc; | |
3185 | ||
3186 | QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) { | |
3187 | qemu_del_vlan_client(vc); | |
3188 | } | |
3189 | } | |
3190 | } | |
3191 | ||
3192 | static void net_check_clients(void) | |
3193 | { | |
3194 | VLANState *vlan; | |
3195 | ||
3196 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
3197 | if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0) | |
3198 | continue; | |
3199 | if (vlan->nb_guest_devs == 0) | |
3200 | fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id); | |
3201 | if (vlan->nb_host_devs == 0) | |
3202 | fprintf(stderr, | |
3203 | "Warning: vlan %d is not connected to host network\n", | |
3204 | vlan->id); | |
3205 | } | |
3206 | } | |
3207 | ||
3208 | static int net_init_client(QemuOpts *opts, void *dummy) | |
3209 | { | |
3210 | return net_client_init(NULL, opts); | |
3211 | } | |
3212 | ||
3213 | int net_init_clients(void) | |
3214 | { | |
3215 | if (QTAILQ_EMPTY(&qemu_net_opts.head)) { | |
3216 | /* if no clients, we use a default config */ | |
3217 | qemu_opts_set(&qemu_net_opts, NULL, "type", "nic"); | |
3218 | #ifdef CONFIG_SLIRP | |
3219 | qemu_opts_set(&qemu_net_opts, NULL, "type", "user"); | |
3220 | #endif | |
3221 | } | |
3222 | ||
3223 | QTAILQ_INIT(&vlans); | |
3224 | ||
3225 | if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) { | |
3226 | return -1; | |
3227 | } | |
3228 | ||
3229 | net_check_clients(); | |
3230 | ||
3231 | return 0; | |
3232 | } | |
3233 | ||
3234 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) | |
3235 | { | |
3236 | #if defined(CONFIG_SLIRP) | |
3237 | /* handle legacy -net channel,port:chr */ | |
3238 | if (!strcmp(opts_list->name, "net") && | |
3239 | !strncmp(optarg, "channel,", strlen("channel,"))) { | |
3240 | int ret; | |
3241 | ||
3242 | optarg += strlen("channel,"); | |
3243 | ||
3244 | if (QTAILQ_EMPTY(&slirp_stacks)) { | |
3245 | struct slirp_config_str *config; | |
3246 | ||
3247 | config = qemu_malloc(sizeof(*config)); | |
3248 | pstrcpy(config->str, sizeof(config->str), optarg); | |
3249 | config->flags = SLIRP_CFG_LEGACY; | |
3250 | config->next = slirp_configs; | |
3251 | slirp_configs = config; | |
3252 | ret = 0; | |
3253 | } else { | |
3254 | ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1); | |
3255 | } | |
3256 | ||
3257 | return ret; | |
3258 | } | |
3259 | #endif | |
3260 | if (!qemu_opts_parse(opts_list, optarg, "type")) { | |
3261 | return -1; | |
3262 | } | |
3263 | ||
3264 | return 0; | |
3265 | } |