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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 "net.h" | |
25 | ||
26 | #include "config-host.h" | |
27 | ||
28 | #include "net/tap.h" | |
29 | #include "net/socket.h" | |
30 | #include "net/dump.h" | |
31 | #include "net/slirp.h" | |
32 | #include "net/vde.h" | |
33 | #include "net/util.h" | |
34 | #include "monitor.h" | |
35 | #include "qemu-common.h" | |
36 | #include "qemu_socket.h" | |
37 | #include "hw/qdev.h" | |
38 | #include "iov.h" | |
39 | ||
40 | static QTAILQ_HEAD(, VLANState) vlans; | |
41 | static QTAILQ_HEAD(, VLANClientState) non_vlan_clients; | |
42 | ||
43 | int default_net = 1; | |
44 | ||
45 | /***********************************************************/ | |
46 | /* network device redirectors */ | |
47 | ||
48 | #if defined(DEBUG_NET) | |
49 | static void hex_dump(FILE *f, const uint8_t *buf, int size) | |
50 | { | |
51 | int len, i, j, c; | |
52 | ||
53 | for(i=0;i<size;i+=16) { | |
54 | len = size - i; | |
55 | if (len > 16) | |
56 | len = 16; | |
57 | fprintf(f, "%08x ", i); | |
58 | for(j=0;j<16;j++) { | |
59 | if (j < len) | |
60 | fprintf(f, " %02x", buf[i+j]); | |
61 | else | |
62 | fprintf(f, " "); | |
63 | } | |
64 | fprintf(f, " "); | |
65 | for(j=0;j<len;j++) { | |
66 | c = buf[i+j]; | |
67 | if (c < ' ' || c > '~') | |
68 | c = '.'; | |
69 | fprintf(f, "%c", c); | |
70 | } | |
71 | fprintf(f, "\n"); | |
72 | } | |
73 | } | |
74 | #endif | |
75 | ||
76 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) | |
77 | { | |
78 | const char *p, *p1; | |
79 | int len; | |
80 | p = *pp; | |
81 | p1 = strchr(p, sep); | |
82 | if (!p1) | |
83 | return -1; | |
84 | len = p1 - p; | |
85 | p1++; | |
86 | if (buf_size > 0) { | |
87 | if (len > buf_size - 1) | |
88 | len = buf_size - 1; | |
89 | memcpy(buf, p, len); | |
90 | buf[len] = '\0'; | |
91 | } | |
92 | *pp = p1; | |
93 | return 0; | |
94 | } | |
95 | ||
96 | int parse_host_port(struct sockaddr_in *saddr, const char *str) | |
97 | { | |
98 | char buf[512]; | |
99 | struct hostent *he; | |
100 | const char *p, *r; | |
101 | int port; | |
102 | ||
103 | p = str; | |
104 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
105 | return -1; | |
106 | saddr->sin_family = AF_INET; | |
107 | if (buf[0] == '\0') { | |
108 | saddr->sin_addr.s_addr = 0; | |
109 | } else { | |
110 | if (qemu_isdigit(buf[0])) { | |
111 | if (!inet_aton(buf, &saddr->sin_addr)) | |
112 | return -1; | |
113 | } else { | |
114 | if ((he = gethostbyname(buf)) == NULL) | |
115 | return - 1; | |
116 | saddr->sin_addr = *(struct in_addr *)he->h_addr; | |
117 | } | |
118 | } | |
119 | port = strtol(p, (char **)&r, 0); | |
120 | if (r == p) | |
121 | return -1; | |
122 | saddr->sin_port = htons(port); | |
123 | return 0; | |
124 | } | |
125 | ||
126 | void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]) | |
127 | { | |
128 | snprintf(vc->info_str, sizeof(vc->info_str), | |
129 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", | |
130 | vc->model, | |
131 | macaddr[0], macaddr[1], macaddr[2], | |
132 | macaddr[3], macaddr[4], macaddr[5]); | |
133 | } | |
134 | ||
135 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) | |
136 | { | |
137 | static int index = 0; | |
138 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; | |
139 | ||
140 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) | |
141 | return; | |
142 | macaddr->a[0] = 0x52; | |
143 | macaddr->a[1] = 0x54; | |
144 | macaddr->a[2] = 0x00; | |
145 | macaddr->a[3] = 0x12; | |
146 | macaddr->a[4] = 0x34; | |
147 | macaddr->a[5] = 0x56 + index++; | |
148 | } | |
149 | ||
150 | static char *assign_name(VLANClientState *vc1, const char *model) | |
151 | { | |
152 | VLANState *vlan; | |
153 | char buf[256]; | |
154 | int id = 0; | |
155 | ||
156 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
157 | VLANClientState *vc; | |
158 | ||
159 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
160 | if (vc != vc1 && strcmp(vc->model, model) == 0) { | |
161 | id++; | |
162 | } | |
163 | } | |
164 | } | |
165 | ||
166 | snprintf(buf, sizeof(buf), "%s.%d", model, id); | |
167 | ||
168 | return qemu_strdup(buf); | |
169 | } | |
170 | ||
171 | static ssize_t qemu_deliver_packet(VLANClientState *sender, | |
172 | unsigned flags, | |
173 | const uint8_t *data, | |
174 | size_t size, | |
175 | void *opaque); | |
176 | static ssize_t qemu_deliver_packet_iov(VLANClientState *sender, | |
177 | unsigned flags, | |
178 | const struct iovec *iov, | |
179 | int iovcnt, | |
180 | void *opaque); | |
181 | ||
182 | VLANClientState *qemu_new_net_client(NetClientInfo *info, | |
183 | VLANState *vlan, | |
184 | VLANClientState *peer, | |
185 | const char *model, | |
186 | const char *name) | |
187 | { | |
188 | VLANClientState *vc; | |
189 | ||
190 | assert(info->size >= sizeof(VLANClientState)); | |
191 | ||
192 | vc = qemu_mallocz(info->size); | |
193 | ||
194 | vc->info = info; | |
195 | vc->model = qemu_strdup(model); | |
196 | if (name) { | |
197 | vc->name = qemu_strdup(name); | |
198 | } else { | |
199 | vc->name = assign_name(vc, model); | |
200 | } | |
201 | ||
202 | if (vlan) { | |
203 | assert(!peer); | |
204 | vc->vlan = vlan; | |
205 | QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next); | |
206 | } else { | |
207 | if (peer) { | |
208 | assert(!peer->peer); | |
209 | vc->peer = peer; | |
210 | peer->peer = vc; | |
211 | } | |
212 | QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next); | |
213 | ||
214 | vc->send_queue = qemu_new_net_queue(qemu_deliver_packet, | |
215 | qemu_deliver_packet_iov, | |
216 | vc); | |
217 | } | |
218 | ||
219 | return vc; | |
220 | } | |
221 | ||
222 | NICState *qemu_new_nic(NetClientInfo *info, | |
223 | NICConf *conf, | |
224 | const char *model, | |
225 | const char *name, | |
226 | void *opaque) | |
227 | { | |
228 | VLANClientState *nc; | |
229 | NICState *nic; | |
230 | ||
231 | assert(info->type == NET_CLIENT_TYPE_NIC); | |
232 | assert(info->size >= sizeof(NICState)); | |
233 | ||
234 | nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name); | |
235 | ||
236 | nic = DO_UPCAST(NICState, nc, nc); | |
237 | nic->conf = conf; | |
238 | nic->opaque = opaque; | |
239 | ||
240 | return nic; | |
241 | } | |
242 | ||
243 | static void qemu_cleanup_vlan_client(VLANClientState *vc) | |
244 | { | |
245 | if (vc->vlan) { | |
246 | QTAILQ_REMOVE(&vc->vlan->clients, vc, next); | |
247 | } else { | |
248 | QTAILQ_REMOVE(&non_vlan_clients, vc, next); | |
249 | } | |
250 | ||
251 | if (vc->info->cleanup) { | |
252 | vc->info->cleanup(vc); | |
253 | } | |
254 | } | |
255 | ||
256 | static void qemu_free_vlan_client(VLANClientState *vc) | |
257 | { | |
258 | if (!vc->vlan) { | |
259 | if (vc->send_queue) { | |
260 | qemu_del_net_queue(vc->send_queue); | |
261 | } | |
262 | if (vc->peer) { | |
263 | vc->peer->peer = NULL; | |
264 | } | |
265 | } | |
266 | qemu_free(vc->name); | |
267 | qemu_free(vc->model); | |
268 | qemu_free(vc); | |
269 | } | |
270 | ||
271 | void qemu_del_vlan_client(VLANClientState *vc) | |
272 | { | |
273 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ | |
274 | if (!vc->vlan && vc->peer && vc->peer->info->type == NET_CLIENT_TYPE_NIC) { | |
275 | NICState *nic = DO_UPCAST(NICState, nc, vc->peer); | |
276 | if (nic->peer_deleted) { | |
277 | return; | |
278 | } | |
279 | nic->peer_deleted = true; | |
280 | /* Let NIC know peer is gone. */ | |
281 | vc->peer->link_down = true; | |
282 | if (vc->peer->info->link_status_changed) { | |
283 | vc->peer->info->link_status_changed(vc->peer); | |
284 | } | |
285 | qemu_cleanup_vlan_client(vc); | |
286 | return; | |
287 | } | |
288 | ||
289 | /* If this is a peer NIC and peer has already been deleted, free it now. */ | |
290 | if (!vc->vlan && vc->peer && vc->info->type == NET_CLIENT_TYPE_NIC) { | |
291 | NICState *nic = DO_UPCAST(NICState, nc, vc); | |
292 | if (nic->peer_deleted) { | |
293 | qemu_free_vlan_client(vc->peer); | |
294 | } | |
295 | } | |
296 | ||
297 | qemu_cleanup_vlan_client(vc); | |
298 | qemu_free_vlan_client(vc); | |
299 | } | |
300 | ||
301 | VLANClientState * | |
302 | qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id, | |
303 | const char *client_str) | |
304 | { | |
305 | VLANState *vlan; | |
306 | VLANClientState *vc; | |
307 | ||
308 | vlan = qemu_find_vlan(vlan_id, 0); | |
309 | if (!vlan) { | |
310 | monitor_printf(mon, "unknown VLAN %d\n", vlan_id); | |
311 | return NULL; | |
312 | } | |
313 | ||
314 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
315 | if (!strcmp(vc->name, client_str)) { | |
316 | break; | |
317 | } | |
318 | } | |
319 | if (!vc) { | |
320 | monitor_printf(mon, "can't find device %s on VLAN %d\n", | |
321 | client_str, vlan_id); | |
322 | } | |
323 | ||
324 | return vc; | |
325 | } | |
326 | ||
327 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) | |
328 | { | |
329 | VLANClientState *nc; | |
330 | VLANState *vlan; | |
331 | ||
332 | QTAILQ_FOREACH(nc, &non_vlan_clients, next) { | |
333 | if (nc->info->type == NET_CLIENT_TYPE_NIC) { | |
334 | func(DO_UPCAST(NICState, nc, nc), opaque); | |
335 | } | |
336 | } | |
337 | ||
338 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
339 | QTAILQ_FOREACH(nc, &vlan->clients, next) { | |
340 | if (nc->info->type == NET_CLIENT_TYPE_NIC) { | |
341 | func(DO_UPCAST(NICState, nc, nc), opaque); | |
342 | } | |
343 | } | |
344 | } | |
345 | } | |
346 | ||
347 | int qemu_can_send_packet(VLANClientState *sender) | |
348 | { | |
349 | VLANState *vlan = sender->vlan; | |
350 | VLANClientState *vc; | |
351 | ||
352 | if (sender->peer) { | |
353 | if (sender->peer->receive_disabled) { | |
354 | return 0; | |
355 | } else if (sender->peer->info->can_receive && | |
356 | !sender->peer->info->can_receive(sender->peer)) { | |
357 | return 0; | |
358 | } else { | |
359 | return 1; | |
360 | } | |
361 | } | |
362 | ||
363 | if (!sender->vlan) { | |
364 | return 1; | |
365 | } | |
366 | ||
367 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
368 | if (vc == sender) { | |
369 | continue; | |
370 | } | |
371 | ||
372 | /* no can_receive() handler, they can always receive */ | |
373 | if (vc->info->can_receive && !vc->info->can_receive(vc)) { | |
374 | return 0; | |
375 | } | |
376 | } | |
377 | return 1; | |
378 | } | |
379 | ||
380 | static ssize_t qemu_deliver_packet(VLANClientState *sender, | |
381 | unsigned flags, | |
382 | const uint8_t *data, | |
383 | size_t size, | |
384 | void *opaque) | |
385 | { | |
386 | VLANClientState *vc = opaque; | |
387 | ssize_t ret; | |
388 | ||
389 | if (vc->link_down) { | |
390 | return size; | |
391 | } | |
392 | ||
393 | if (vc->receive_disabled) { | |
394 | return 0; | |
395 | } | |
396 | ||
397 | if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) { | |
398 | ret = vc->info->receive_raw(vc, data, size); | |
399 | } else { | |
400 | ret = vc->info->receive(vc, data, size); | |
401 | } | |
402 | ||
403 | if (ret == 0) { | |
404 | vc->receive_disabled = 1; | |
405 | }; | |
406 | ||
407 | return ret; | |
408 | } | |
409 | ||
410 | static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender, | |
411 | unsigned flags, | |
412 | const uint8_t *buf, | |
413 | size_t size, | |
414 | void *opaque) | |
415 | { | |
416 | VLANState *vlan = opaque; | |
417 | VLANClientState *vc; | |
418 | ssize_t ret = -1; | |
419 | ||
420 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
421 | ssize_t len; | |
422 | ||
423 | if (vc == sender) { | |
424 | continue; | |
425 | } | |
426 | ||
427 | if (vc->link_down) { | |
428 | ret = size; | |
429 | continue; | |
430 | } | |
431 | ||
432 | if (vc->receive_disabled) { | |
433 | ret = 0; | |
434 | continue; | |
435 | } | |
436 | ||
437 | if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) { | |
438 | len = vc->info->receive_raw(vc, buf, size); | |
439 | } else { | |
440 | len = vc->info->receive(vc, buf, size); | |
441 | } | |
442 | ||
443 | if (len == 0) { | |
444 | vc->receive_disabled = 1; | |
445 | } | |
446 | ||
447 | ret = (ret >= 0) ? ret : len; | |
448 | ||
449 | } | |
450 | ||
451 | return ret; | |
452 | } | |
453 | ||
454 | void qemu_purge_queued_packets(VLANClientState *vc) | |
455 | { | |
456 | NetQueue *queue; | |
457 | ||
458 | if (!vc->peer && !vc->vlan) { | |
459 | return; | |
460 | } | |
461 | ||
462 | if (vc->peer) { | |
463 | queue = vc->peer->send_queue; | |
464 | } else { | |
465 | queue = vc->vlan->send_queue; | |
466 | } | |
467 | ||
468 | qemu_net_queue_purge(queue, vc); | |
469 | } | |
470 | ||
471 | void qemu_flush_queued_packets(VLANClientState *vc) | |
472 | { | |
473 | NetQueue *queue; | |
474 | ||
475 | vc->receive_disabled = 0; | |
476 | ||
477 | if (vc->vlan) { | |
478 | queue = vc->vlan->send_queue; | |
479 | } else { | |
480 | queue = vc->send_queue; | |
481 | } | |
482 | ||
483 | qemu_net_queue_flush(queue); | |
484 | } | |
485 | ||
486 | static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender, | |
487 | unsigned flags, | |
488 | const uint8_t *buf, int size, | |
489 | NetPacketSent *sent_cb) | |
490 | { | |
491 | NetQueue *queue; | |
492 | ||
493 | #ifdef DEBUG_NET | |
494 | printf("qemu_send_packet_async:\n"); | |
495 | hex_dump(stdout, buf, size); | |
496 | #endif | |
497 | ||
498 | if (sender->link_down || (!sender->peer && !sender->vlan)) { | |
499 | return size; | |
500 | } | |
501 | ||
502 | if (sender->peer) { | |
503 | queue = sender->peer->send_queue; | |
504 | } else { | |
505 | queue = sender->vlan->send_queue; | |
506 | } | |
507 | ||
508 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); | |
509 | } | |
510 | ||
511 | ssize_t qemu_send_packet_async(VLANClientState *sender, | |
512 | const uint8_t *buf, int size, | |
513 | NetPacketSent *sent_cb) | |
514 | { | |
515 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
516 | buf, size, sent_cb); | |
517 | } | |
518 | ||
519 | void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) | |
520 | { | |
521 | qemu_send_packet_async(vc, buf, size, NULL); | |
522 | } | |
523 | ||
524 | ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size) | |
525 | { | |
526 | return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW, | |
527 | buf, size, NULL); | |
528 | } | |
529 | ||
530 | static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, | |
531 | int iovcnt) | |
532 | { | |
533 | uint8_t buffer[4096]; | |
534 | size_t offset; | |
535 | ||
536 | offset = iov_to_buf(iov, iovcnt, buffer, 0, sizeof(buffer)); | |
537 | ||
538 | return vc->info->receive(vc, buffer, offset); | |
539 | } | |
540 | ||
541 | static ssize_t qemu_deliver_packet_iov(VLANClientState *sender, | |
542 | unsigned flags, | |
543 | const struct iovec *iov, | |
544 | int iovcnt, | |
545 | void *opaque) | |
546 | { | |
547 | VLANClientState *vc = opaque; | |
548 | ||
549 | if (vc->link_down) { | |
550 | return iov_size(iov, iovcnt); | |
551 | } | |
552 | ||
553 | if (vc->info->receive_iov) { | |
554 | return vc->info->receive_iov(vc, iov, iovcnt); | |
555 | } else { | |
556 | return vc_sendv_compat(vc, iov, iovcnt); | |
557 | } | |
558 | } | |
559 | ||
560 | static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender, | |
561 | unsigned flags, | |
562 | const struct iovec *iov, | |
563 | int iovcnt, | |
564 | void *opaque) | |
565 | { | |
566 | VLANState *vlan = opaque; | |
567 | VLANClientState *vc; | |
568 | ssize_t ret = -1; | |
569 | ||
570 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
571 | ssize_t len; | |
572 | ||
573 | if (vc == sender) { | |
574 | continue; | |
575 | } | |
576 | ||
577 | if (vc->link_down) { | |
578 | ret = iov_size(iov, iovcnt); | |
579 | continue; | |
580 | } | |
581 | ||
582 | assert(!(flags & QEMU_NET_PACKET_FLAG_RAW)); | |
583 | ||
584 | if (vc->info->receive_iov) { | |
585 | len = vc->info->receive_iov(vc, iov, iovcnt); | |
586 | } else { | |
587 | len = vc_sendv_compat(vc, iov, iovcnt); | |
588 | } | |
589 | ||
590 | ret = (ret >= 0) ? ret : len; | |
591 | } | |
592 | ||
593 | return ret; | |
594 | } | |
595 | ||
596 | ssize_t qemu_sendv_packet_async(VLANClientState *sender, | |
597 | const struct iovec *iov, int iovcnt, | |
598 | NetPacketSent *sent_cb) | |
599 | { | |
600 | NetQueue *queue; | |
601 | ||
602 | if (sender->link_down || (!sender->peer && !sender->vlan)) { | |
603 | return iov_size(iov, iovcnt); | |
604 | } | |
605 | ||
606 | if (sender->peer) { | |
607 | queue = sender->peer->send_queue; | |
608 | } else { | |
609 | queue = sender->vlan->send_queue; | |
610 | } | |
611 | ||
612 | return qemu_net_queue_send_iov(queue, sender, | |
613 | QEMU_NET_PACKET_FLAG_NONE, | |
614 | iov, iovcnt, sent_cb); | |
615 | } | |
616 | ||
617 | ssize_t | |
618 | qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) | |
619 | { | |
620 | return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); | |
621 | } | |
622 | ||
623 | /* find or alloc a new VLAN */ | |
624 | VLANState *qemu_find_vlan(int id, int allocate) | |
625 | { | |
626 | VLANState *vlan; | |
627 | ||
628 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
629 | if (vlan->id == id) { | |
630 | return vlan; | |
631 | } | |
632 | } | |
633 | ||
634 | if (!allocate) { | |
635 | return NULL; | |
636 | } | |
637 | ||
638 | vlan = qemu_mallocz(sizeof(VLANState)); | |
639 | vlan->id = id; | |
640 | QTAILQ_INIT(&vlan->clients); | |
641 | ||
642 | vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet, | |
643 | qemu_vlan_deliver_packet_iov, | |
644 | vlan); | |
645 | ||
646 | QTAILQ_INSERT_TAIL(&vlans, vlan, next); | |
647 | ||
648 | return vlan; | |
649 | } | |
650 | ||
651 | VLANClientState *qemu_find_netdev(const char *id) | |
652 | { | |
653 | VLANClientState *vc; | |
654 | ||
655 | QTAILQ_FOREACH(vc, &non_vlan_clients, next) { | |
656 | if (!strcmp(vc->name, id)) { | |
657 | return vc; | |
658 | } | |
659 | } | |
660 | ||
661 | return NULL; | |
662 | } | |
663 | ||
664 | static int nic_get_free_idx(void) | |
665 | { | |
666 | int index; | |
667 | ||
668 | for (index = 0; index < MAX_NICS; index++) | |
669 | if (!nd_table[index].used) | |
670 | return index; | |
671 | return -1; | |
672 | } | |
673 | ||
674 | int qemu_show_nic_models(const char *arg, const char *const *models) | |
675 | { | |
676 | int i; | |
677 | ||
678 | if (!arg || strcmp(arg, "?")) | |
679 | return 0; | |
680 | ||
681 | fprintf(stderr, "qemu: Supported NIC models: "); | |
682 | for (i = 0 ; models[i]; i++) | |
683 | fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); | |
684 | return 1; | |
685 | } | |
686 | ||
687 | void qemu_check_nic_model(NICInfo *nd, const char *model) | |
688 | { | |
689 | const char *models[2]; | |
690 | ||
691 | models[0] = model; | |
692 | models[1] = NULL; | |
693 | ||
694 | if (qemu_show_nic_models(nd->model, models)) | |
695 | exit(0); | |
696 | if (qemu_find_nic_model(nd, models, model) < 0) | |
697 | exit(1); | |
698 | } | |
699 | ||
700 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, | |
701 | const char *default_model) | |
702 | { | |
703 | int i; | |
704 | ||
705 | if (!nd->model) | |
706 | nd->model = qemu_strdup(default_model); | |
707 | ||
708 | for (i = 0 ; models[i]; i++) { | |
709 | if (strcmp(nd->model, models[i]) == 0) | |
710 | return i; | |
711 | } | |
712 | ||
713 | error_report("Unsupported NIC model: %s", nd->model); | |
714 | return -1; | |
715 | } | |
716 | ||
717 | int net_handle_fd_param(Monitor *mon, const char *param) | |
718 | { | |
719 | int fd; | |
720 | ||
721 | if (!qemu_isdigit(param[0]) && mon) { | |
722 | ||
723 | fd = monitor_get_fd(mon, param); | |
724 | if (fd == -1) { | |
725 | error_report("No file descriptor named %s found", param); | |
726 | return -1; | |
727 | } | |
728 | } else { | |
729 | char *endptr = NULL; | |
730 | ||
731 | fd = strtol(param, &endptr, 10); | |
732 | if (*endptr || (fd == 0 && param == endptr)) { | |
733 | return -1; | |
734 | } | |
735 | } | |
736 | ||
737 | return fd; | |
738 | } | |
739 | ||
740 | static int net_init_nic(QemuOpts *opts, | |
741 | Monitor *mon, | |
742 | const char *name, | |
743 | VLANState *vlan) | |
744 | { | |
745 | int idx; | |
746 | NICInfo *nd; | |
747 | const char *netdev; | |
748 | ||
749 | idx = nic_get_free_idx(); | |
750 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
751 | error_report("Too Many NICs"); | |
752 | return -1; | |
753 | } | |
754 | ||
755 | nd = &nd_table[idx]; | |
756 | ||
757 | memset(nd, 0, sizeof(*nd)); | |
758 | ||
759 | if ((netdev = qemu_opt_get(opts, "netdev"))) { | |
760 | nd->netdev = qemu_find_netdev(netdev); | |
761 | if (!nd->netdev) { | |
762 | error_report("netdev '%s' not found", netdev); | |
763 | return -1; | |
764 | } | |
765 | } else { | |
766 | assert(vlan); | |
767 | nd->vlan = vlan; | |
768 | } | |
769 | if (name) { | |
770 | nd->name = qemu_strdup(name); | |
771 | } | |
772 | if (qemu_opt_get(opts, "model")) { | |
773 | nd->model = qemu_strdup(qemu_opt_get(opts, "model")); | |
774 | } | |
775 | if (qemu_opt_get(opts, "addr")) { | |
776 | nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr")); | |
777 | } | |
778 | ||
779 | nd->macaddr[0] = 0x52; | |
780 | nd->macaddr[1] = 0x54; | |
781 | nd->macaddr[2] = 0x00; | |
782 | nd->macaddr[3] = 0x12; | |
783 | nd->macaddr[4] = 0x34; | |
784 | nd->macaddr[5] = 0x56 + idx; | |
785 | ||
786 | if (qemu_opt_get(opts, "macaddr") && | |
787 | net_parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) { | |
788 | error_report("invalid syntax for ethernet address"); | |
789 | return -1; | |
790 | } | |
791 | ||
792 | nd->nvectors = qemu_opt_get_number(opts, "vectors", | |
793 | DEV_NVECTORS_UNSPECIFIED); | |
794 | if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED && | |
795 | (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) { | |
796 | error_report("invalid # of vectors: %d", nd->nvectors); | |
797 | return -1; | |
798 | } | |
799 | ||
800 | nd->used = 1; | |
801 | nb_nics++; | |
802 | ||
803 | return idx; | |
804 | } | |
805 | ||
806 | #define NET_COMMON_PARAMS_DESC \ | |
807 | { \ | |
808 | .name = "type", \ | |
809 | .type = QEMU_OPT_STRING, \ | |
810 | .help = "net client type (nic, tap etc.)", \ | |
811 | }, { \ | |
812 | .name = "vlan", \ | |
813 | .type = QEMU_OPT_NUMBER, \ | |
814 | .help = "vlan number", \ | |
815 | }, { \ | |
816 | .name = "name", \ | |
817 | .type = QEMU_OPT_STRING, \ | |
818 | .help = "identifier for monitor commands", \ | |
819 | } | |
820 | ||
821 | typedef int (*net_client_init_func)(QemuOpts *opts, | |
822 | Monitor *mon, | |
823 | const char *name, | |
824 | VLANState *vlan); | |
825 | ||
826 | /* magic number, but compiler will warn if too small */ | |
827 | #define NET_MAX_DESC 20 | |
828 | ||
829 | static const struct { | |
830 | const char *type; | |
831 | net_client_init_func init; | |
832 | QemuOptDesc desc[NET_MAX_DESC]; | |
833 | } net_client_types[NET_CLIENT_TYPE_MAX] = { | |
834 | [NET_CLIENT_TYPE_NONE] = { | |
835 | .type = "none", | |
836 | .desc = { | |
837 | NET_COMMON_PARAMS_DESC, | |
838 | { /* end of list */ } | |
839 | }, | |
840 | }, | |
841 | [NET_CLIENT_TYPE_NIC] = { | |
842 | .type = "nic", | |
843 | .init = net_init_nic, | |
844 | .desc = { | |
845 | NET_COMMON_PARAMS_DESC, | |
846 | { | |
847 | .name = "netdev", | |
848 | .type = QEMU_OPT_STRING, | |
849 | .help = "id of -netdev to connect to", | |
850 | }, | |
851 | { | |
852 | .name = "macaddr", | |
853 | .type = QEMU_OPT_STRING, | |
854 | .help = "MAC address", | |
855 | }, { | |
856 | .name = "model", | |
857 | .type = QEMU_OPT_STRING, | |
858 | .help = "device model (e1000, rtl8139, virtio etc.)", | |
859 | }, { | |
860 | .name = "addr", | |
861 | .type = QEMU_OPT_STRING, | |
862 | .help = "PCI device address", | |
863 | }, { | |
864 | .name = "vectors", | |
865 | .type = QEMU_OPT_NUMBER, | |
866 | .help = "number of MSI-x vectors, 0 to disable MSI-X", | |
867 | }, | |
868 | { /* end of list */ } | |
869 | }, | |
870 | }, | |
871 | #ifdef CONFIG_SLIRP | |
872 | [NET_CLIENT_TYPE_USER] = { | |
873 | .type = "user", | |
874 | .init = net_init_slirp, | |
875 | .desc = { | |
876 | NET_COMMON_PARAMS_DESC, | |
877 | { | |
878 | .name = "hostname", | |
879 | .type = QEMU_OPT_STRING, | |
880 | .help = "client hostname reported by the builtin DHCP server", | |
881 | }, { | |
882 | .name = "restrict", | |
883 | .type = QEMU_OPT_STRING, | |
884 | .help = "isolate the guest from the host (y|yes|n|no)", | |
885 | }, { | |
886 | .name = "ip", | |
887 | .type = QEMU_OPT_STRING, | |
888 | .help = "legacy parameter, use net= instead", | |
889 | }, { | |
890 | .name = "net", | |
891 | .type = QEMU_OPT_STRING, | |
892 | .help = "IP address and optional netmask", | |
893 | }, { | |
894 | .name = "host", | |
895 | .type = QEMU_OPT_STRING, | |
896 | .help = "guest-visible address of the host", | |
897 | }, { | |
898 | .name = "tftp", | |
899 | .type = QEMU_OPT_STRING, | |
900 | .help = "root directory of the built-in TFTP server", | |
901 | }, { | |
902 | .name = "bootfile", | |
903 | .type = QEMU_OPT_STRING, | |
904 | .help = "BOOTP filename, for use with tftp=", | |
905 | }, { | |
906 | .name = "dhcpstart", | |
907 | .type = QEMU_OPT_STRING, | |
908 | .help = "the first of the 16 IPs the built-in DHCP server can assign", | |
909 | }, { | |
910 | .name = "dns", | |
911 | .type = QEMU_OPT_STRING, | |
912 | .help = "guest-visible address of the virtual nameserver", | |
913 | }, { | |
914 | .name = "smb", | |
915 | .type = QEMU_OPT_STRING, | |
916 | .help = "root directory of the built-in SMB server", | |
917 | }, { | |
918 | .name = "smbserver", | |
919 | .type = QEMU_OPT_STRING, | |
920 | .help = "IP address of the built-in SMB server", | |
921 | }, { | |
922 | .name = "hostfwd", | |
923 | .type = QEMU_OPT_STRING, | |
924 | .help = "guest port number to forward incoming TCP or UDP connections", | |
925 | }, { | |
926 | .name = "guestfwd", | |
927 | .type = QEMU_OPT_STRING, | |
928 | .help = "IP address and port to forward guest TCP connections", | |
929 | }, | |
930 | { /* end of list */ } | |
931 | }, | |
932 | }, | |
933 | #endif | |
934 | [NET_CLIENT_TYPE_TAP] = { | |
935 | .type = "tap", | |
936 | .init = net_init_tap, | |
937 | .desc = { | |
938 | NET_COMMON_PARAMS_DESC, | |
939 | { | |
940 | .name = "ifname", | |
941 | .type = QEMU_OPT_STRING, | |
942 | .help = "interface name", | |
943 | }, | |
944 | #ifndef _WIN32 | |
945 | { | |
946 | .name = "fd", | |
947 | .type = QEMU_OPT_STRING, | |
948 | .help = "file descriptor of an already opened tap", | |
949 | }, { | |
950 | .name = "script", | |
951 | .type = QEMU_OPT_STRING, | |
952 | .help = "script to initialize the interface", | |
953 | }, { | |
954 | .name = "downscript", | |
955 | .type = QEMU_OPT_STRING, | |
956 | .help = "script to shut down the interface", | |
957 | }, { | |
958 | .name = "sndbuf", | |
959 | .type = QEMU_OPT_SIZE, | |
960 | .help = "send buffer limit" | |
961 | }, { | |
962 | .name = "vnet_hdr", | |
963 | .type = QEMU_OPT_BOOL, | |
964 | .help = "enable the IFF_VNET_HDR flag on the tap interface" | |
965 | }, { | |
966 | .name = "vhost", | |
967 | .type = QEMU_OPT_BOOL, | |
968 | .help = "enable vhost-net network accelerator", | |
969 | }, { | |
970 | .name = "vhostfd", | |
971 | .type = QEMU_OPT_STRING, | |
972 | .help = "file descriptor of an already opened vhost net device", | |
973 | }, { | |
974 | .name = "vhostforce", | |
975 | .type = QEMU_OPT_BOOL, | |
976 | .help = "force vhost on for non-MSIX virtio guests", | |
977 | }, | |
978 | #endif /* _WIN32 */ | |
979 | { /* end of list */ } | |
980 | }, | |
981 | }, | |
982 | [NET_CLIENT_TYPE_SOCKET] = { | |
983 | .type = "socket", | |
984 | .init = net_init_socket, | |
985 | .desc = { | |
986 | NET_COMMON_PARAMS_DESC, | |
987 | { | |
988 | .name = "fd", | |
989 | .type = QEMU_OPT_STRING, | |
990 | .help = "file descriptor of an already opened socket", | |
991 | }, { | |
992 | .name = "listen", | |
993 | .type = QEMU_OPT_STRING, | |
994 | .help = "port number, and optional hostname, to listen on", | |
995 | }, { | |
996 | .name = "connect", | |
997 | .type = QEMU_OPT_STRING, | |
998 | .help = "port number, and optional hostname, to connect to", | |
999 | }, { | |
1000 | .name = "mcast", | |
1001 | .type = QEMU_OPT_STRING, | |
1002 | .help = "UDP multicast address and port number", | |
1003 | }, { | |
1004 | .name = "localaddr", | |
1005 | .type = QEMU_OPT_STRING, | |
1006 | .help = "source address for multicast packets", | |
1007 | }, | |
1008 | { /* end of list */ } | |
1009 | }, | |
1010 | }, | |
1011 | #ifdef CONFIG_VDE | |
1012 | [NET_CLIENT_TYPE_VDE] = { | |
1013 | .type = "vde", | |
1014 | .init = net_init_vde, | |
1015 | .desc = { | |
1016 | NET_COMMON_PARAMS_DESC, | |
1017 | { | |
1018 | .name = "sock", | |
1019 | .type = QEMU_OPT_STRING, | |
1020 | .help = "socket path", | |
1021 | }, { | |
1022 | .name = "port", | |
1023 | .type = QEMU_OPT_NUMBER, | |
1024 | .help = "port number", | |
1025 | }, { | |
1026 | .name = "group", | |
1027 | .type = QEMU_OPT_STRING, | |
1028 | .help = "group owner of socket", | |
1029 | }, { | |
1030 | .name = "mode", | |
1031 | .type = QEMU_OPT_NUMBER, | |
1032 | .help = "permissions for socket", | |
1033 | }, | |
1034 | { /* end of list */ } | |
1035 | }, | |
1036 | }, | |
1037 | #endif | |
1038 | [NET_CLIENT_TYPE_DUMP] = { | |
1039 | .type = "dump", | |
1040 | .init = net_init_dump, | |
1041 | .desc = { | |
1042 | NET_COMMON_PARAMS_DESC, | |
1043 | { | |
1044 | .name = "len", | |
1045 | .type = QEMU_OPT_SIZE, | |
1046 | .help = "per-packet size limit (64k default)", | |
1047 | }, { | |
1048 | .name = "file", | |
1049 | .type = QEMU_OPT_STRING, | |
1050 | .help = "dump file path (default is qemu-vlan0.pcap)", | |
1051 | }, | |
1052 | { /* end of list */ } | |
1053 | }, | |
1054 | }, | |
1055 | }; | |
1056 | ||
1057 | int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev) | |
1058 | { | |
1059 | const char *name; | |
1060 | const char *type; | |
1061 | int i; | |
1062 | ||
1063 | type = qemu_opt_get(opts, "type"); | |
1064 | if (!type) { | |
1065 | qerror_report(QERR_MISSING_PARAMETER, "type"); | |
1066 | return -1; | |
1067 | } | |
1068 | ||
1069 | if (is_netdev) { | |
1070 | if (strcmp(type, "tap") != 0 && | |
1071 | #ifdef CONFIG_SLIRP | |
1072 | strcmp(type, "user") != 0 && | |
1073 | #endif | |
1074 | #ifdef CONFIG_VDE | |
1075 | strcmp(type, "vde") != 0 && | |
1076 | #endif | |
1077 | strcmp(type, "socket") != 0) { | |
1078 | qerror_report(QERR_INVALID_PARAMETER_VALUE, "type", | |
1079 | "a netdev backend type"); | |
1080 | return -1; | |
1081 | } | |
1082 | ||
1083 | if (qemu_opt_get(opts, "vlan")) { | |
1084 | qerror_report(QERR_INVALID_PARAMETER, "vlan"); | |
1085 | return -1; | |
1086 | } | |
1087 | if (qemu_opt_get(opts, "name")) { | |
1088 | qerror_report(QERR_INVALID_PARAMETER, "name"); | |
1089 | return -1; | |
1090 | } | |
1091 | if (!qemu_opts_id(opts)) { | |
1092 | qerror_report(QERR_MISSING_PARAMETER, "id"); | |
1093 | return -1; | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | name = qemu_opts_id(opts); | |
1098 | if (!name) { | |
1099 | name = qemu_opt_get(opts, "name"); | |
1100 | } | |
1101 | ||
1102 | for (i = 0; i < NET_CLIENT_TYPE_MAX; i++) { | |
1103 | if (net_client_types[i].type != NULL && | |
1104 | !strcmp(net_client_types[i].type, type)) { | |
1105 | VLANState *vlan = NULL; | |
1106 | int ret; | |
1107 | ||
1108 | if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) { | |
1109 | return -1; | |
1110 | } | |
1111 | ||
1112 | /* Do not add to a vlan if it's a -netdev or a nic with a | |
1113 | * netdev= parameter. */ | |
1114 | if (!(is_netdev || | |
1115 | (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) { | |
1116 | vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); | |
1117 | } | |
1118 | ||
1119 | ret = 0; | |
1120 | if (net_client_types[i].init) { | |
1121 | ret = net_client_types[i].init(opts, mon, name, vlan); | |
1122 | if (ret < 0) { | |
1123 | /* TODO push error reporting into init() methods */ | |
1124 | qerror_report(QERR_DEVICE_INIT_FAILED, type); | |
1125 | return -1; | |
1126 | } | |
1127 | } | |
1128 | return ret; | |
1129 | } | |
1130 | } | |
1131 | ||
1132 | qerror_report(QERR_INVALID_PARAMETER_VALUE, "type", | |
1133 | "a network client type"); | |
1134 | return -1; | |
1135 | } | |
1136 | ||
1137 | static int net_host_check_device(const char *device) | |
1138 | { | |
1139 | int i; | |
1140 | const char *valid_param_list[] = { "tap", "socket", "dump" | |
1141 | #ifdef CONFIG_SLIRP | |
1142 | ,"user" | |
1143 | #endif | |
1144 | #ifdef CONFIG_VDE | |
1145 | ,"vde" | |
1146 | #endif | |
1147 | }; | |
1148 | for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { | |
1149 | if (!strncmp(valid_param_list[i], device, | |
1150 | strlen(valid_param_list[i]))) | |
1151 | return 1; | |
1152 | } | |
1153 | ||
1154 | return 0; | |
1155 | } | |
1156 | ||
1157 | void net_host_device_add(Monitor *mon, const QDict *qdict) | |
1158 | { | |
1159 | const char *device = qdict_get_str(qdict, "device"); | |
1160 | const char *opts_str = qdict_get_try_str(qdict, "opts"); | |
1161 | QemuOpts *opts; | |
1162 | ||
1163 | if (!net_host_check_device(device)) { | |
1164 | monitor_printf(mon, "invalid host network device %s\n", device); | |
1165 | return; | |
1166 | } | |
1167 | ||
1168 | opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0); | |
1169 | if (!opts) { | |
1170 | return; | |
1171 | } | |
1172 | ||
1173 | qemu_opt_set(opts, "type", device); | |
1174 | ||
1175 | if (net_client_init(mon, opts, 0) < 0) { | |
1176 | monitor_printf(mon, "adding host network device %s failed\n", device); | |
1177 | } | |
1178 | } | |
1179 | ||
1180 | void net_host_device_remove(Monitor *mon, const QDict *qdict) | |
1181 | { | |
1182 | VLANClientState *vc; | |
1183 | int vlan_id = qdict_get_int(qdict, "vlan_id"); | |
1184 | const char *device = qdict_get_str(qdict, "device"); | |
1185 | ||
1186 | vc = qemu_find_vlan_client_by_name(mon, vlan_id, device); | |
1187 | if (!vc) { | |
1188 | return; | |
1189 | } | |
1190 | if (!net_host_check_device(vc->model)) { | |
1191 | monitor_printf(mon, "invalid host network device %s\n", device); | |
1192 | return; | |
1193 | } | |
1194 | qemu_del_vlan_client(vc); | |
1195 | } | |
1196 | ||
1197 | int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data) | |
1198 | { | |
1199 | QemuOpts *opts; | |
1200 | int res; | |
1201 | ||
1202 | opts = qemu_opts_from_qdict(qemu_find_opts("netdev"), qdict); | |
1203 | if (!opts) { | |
1204 | return -1; | |
1205 | } | |
1206 | ||
1207 | res = net_client_init(mon, opts, 1); | |
1208 | if (res < 0) { | |
1209 | qemu_opts_del(opts); | |
1210 | } | |
1211 | ||
1212 | return res; | |
1213 | } | |
1214 | ||
1215 | int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data) | |
1216 | { | |
1217 | const char *id = qdict_get_str(qdict, "id"); | |
1218 | VLANClientState *vc; | |
1219 | ||
1220 | vc = qemu_find_netdev(id); | |
1221 | if (!vc || vc->info->type == NET_CLIENT_TYPE_NIC) { | |
1222 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
1223 | return -1; | |
1224 | } | |
1225 | qemu_del_vlan_client(vc); | |
1226 | qemu_opts_del(qemu_opts_find(qemu_find_opts("netdev"), id)); | |
1227 | return 0; | |
1228 | } | |
1229 | ||
1230 | void do_info_network(Monitor *mon) | |
1231 | { | |
1232 | VLANState *vlan; | |
1233 | VLANClientState *vc, *peer; | |
1234 | net_client_type type; | |
1235 | ||
1236 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
1237 | monitor_printf(mon, "VLAN %d devices:\n", vlan->id); | |
1238 | ||
1239 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
1240 | monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str); | |
1241 | } | |
1242 | } | |
1243 | monitor_printf(mon, "Devices not on any VLAN:\n"); | |
1244 | QTAILQ_FOREACH(vc, &non_vlan_clients, next) { | |
1245 | peer = vc->peer; | |
1246 | type = vc->info->type; | |
1247 | if (!peer || type == NET_CLIENT_TYPE_NIC) { | |
1248 | monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str); | |
1249 | } /* else it's a netdev connected to a NIC, printed with the NIC */ | |
1250 | if (peer && type == NET_CLIENT_TYPE_NIC) { | |
1251 | monitor_printf(mon, " \\ %s: %s\n", peer->name, peer->info_str); | |
1252 | } | |
1253 | } | |
1254 | } | |
1255 | ||
1256 | int do_set_link(Monitor *mon, const QDict *qdict, QObject **ret_data) | |
1257 | { | |
1258 | VLANState *vlan; | |
1259 | VLANClientState *vc = NULL; | |
1260 | const char *name = qdict_get_str(qdict, "name"); | |
1261 | int up = qdict_get_bool(qdict, "up"); | |
1262 | ||
1263 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
1264 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
1265 | if (strcmp(vc->name, name) == 0) { | |
1266 | goto done; | |
1267 | } | |
1268 | } | |
1269 | } | |
1270 | vc = qemu_find_netdev(name); | |
1271 | done: | |
1272 | ||
1273 | if (!vc) { | |
1274 | qerror_report(QERR_DEVICE_NOT_FOUND, name); | |
1275 | return -1; | |
1276 | } | |
1277 | ||
1278 | vc->link_down = !up; | |
1279 | ||
1280 | if (vc->info->link_status_changed) { | |
1281 | vc->info->link_status_changed(vc); | |
1282 | } | |
1283 | ||
1284 | /* Notify peer. Don't update peer link status: this makes it possible to | |
1285 | * disconnect from host network without notifying the guest. | |
1286 | * FIXME: is disconnected link status change operation useful? | |
1287 | * | |
1288 | * Current behaviour is compatible with qemu vlans where there could be | |
1289 | * multiple clients that can still communicate with each other in | |
1290 | * disconnected mode. For now maintain this compatibility. */ | |
1291 | if (vc->peer && vc->peer->info->link_status_changed) { | |
1292 | vc->peer->info->link_status_changed(vc->peer); | |
1293 | } | |
1294 | return 0; | |
1295 | } | |
1296 | ||
1297 | void net_cleanup(void) | |
1298 | { | |
1299 | VLANState *vlan; | |
1300 | VLANClientState *vc, *next_vc; | |
1301 | ||
1302 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
1303 | QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) { | |
1304 | qemu_del_vlan_client(vc); | |
1305 | } | |
1306 | } | |
1307 | ||
1308 | QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) { | |
1309 | qemu_del_vlan_client(vc); | |
1310 | } | |
1311 | } | |
1312 | ||
1313 | void net_check_clients(void) | |
1314 | { | |
1315 | VLANState *vlan; | |
1316 | VLANClientState *vc; | |
1317 | int i; | |
1318 | ||
1319 | /* Don't warn about the default network setup that you get if | |
1320 | * no command line -net or -netdev options are specified. There | |
1321 | * are two cases that we would otherwise complain about: | |
1322 | * (1) board doesn't support a NIC but the implicit "-net nic" | |
1323 | * requested one | |
1324 | * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic" | |
1325 | * sets up a nic that isn't connected to anything. | |
1326 | */ | |
1327 | if (default_net) { | |
1328 | return; | |
1329 | } | |
1330 | ||
1331 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
1332 | int has_nic = 0, has_host_dev = 0; | |
1333 | ||
1334 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
1335 | switch (vc->info->type) { | |
1336 | case NET_CLIENT_TYPE_NIC: | |
1337 | has_nic = 1; | |
1338 | break; | |
1339 | case NET_CLIENT_TYPE_USER: | |
1340 | case NET_CLIENT_TYPE_TAP: | |
1341 | case NET_CLIENT_TYPE_SOCKET: | |
1342 | case NET_CLIENT_TYPE_VDE: | |
1343 | has_host_dev = 1; | |
1344 | break; | |
1345 | default: ; | |
1346 | } | |
1347 | } | |
1348 | if (has_host_dev && !has_nic) | |
1349 | fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id); | |
1350 | if (has_nic && !has_host_dev) | |
1351 | fprintf(stderr, | |
1352 | "Warning: vlan %d is not connected to host network\n", | |
1353 | vlan->id); | |
1354 | } | |
1355 | QTAILQ_FOREACH(vc, &non_vlan_clients, next) { | |
1356 | if (!vc->peer) { | |
1357 | fprintf(stderr, "Warning: %s %s has no peer\n", | |
1358 | vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev", | |
1359 | vc->name); | |
1360 | } | |
1361 | } | |
1362 | ||
1363 | /* Check that all NICs requested via -net nic actually got created. | |
1364 | * NICs created via -device don't need to be checked here because | |
1365 | * they are always instantiated. | |
1366 | */ | |
1367 | for (i = 0; i < MAX_NICS; i++) { | |
1368 | NICInfo *nd = &nd_table[i]; | |
1369 | if (nd->used && !nd->instantiated) { | |
1370 | fprintf(stderr, "Warning: requested NIC (%s, model %s) " | |
1371 | "was not created (not supported by this machine?)\n", | |
1372 | nd->name ? nd->name : "anonymous", | |
1373 | nd->model ? nd->model : "unspecified"); | |
1374 | } | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | static int net_init_client(QemuOpts *opts, void *dummy) | |
1379 | { | |
1380 | if (net_client_init(NULL, opts, 0) < 0) | |
1381 | return -1; | |
1382 | return 0; | |
1383 | } | |
1384 | ||
1385 | static int net_init_netdev(QemuOpts *opts, void *dummy) | |
1386 | { | |
1387 | return net_client_init(NULL, opts, 1); | |
1388 | } | |
1389 | ||
1390 | int net_init_clients(void) | |
1391 | { | |
1392 | QemuOptsList *net = qemu_find_opts("net"); | |
1393 | ||
1394 | if (default_net) { | |
1395 | /* if no clients, we use a default config */ | |
1396 | qemu_opts_set(net, NULL, "type", "nic"); | |
1397 | #ifdef CONFIG_SLIRP | |
1398 | qemu_opts_set(net, NULL, "type", "user"); | |
1399 | #endif | |
1400 | } | |
1401 | ||
1402 | QTAILQ_INIT(&vlans); | |
1403 | QTAILQ_INIT(&non_vlan_clients); | |
1404 | ||
1405 | if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1) | |
1406 | return -1; | |
1407 | ||
1408 | if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) { | |
1409 | return -1; | |
1410 | } | |
1411 | ||
1412 | return 0; | |
1413 | } | |
1414 | ||
1415 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) | |
1416 | { | |
1417 | #if defined(CONFIG_SLIRP) | |
1418 | int ret; | |
1419 | if (net_slirp_parse_legacy(opts_list, optarg, &ret)) { | |
1420 | return ret; | |
1421 | } | |
1422 | #endif | |
1423 | ||
1424 | if (!qemu_opts_parse(opts_list, optarg, 1)) { | |
1425 | return -1; | |
1426 | } | |
1427 | ||
1428 | default_net = 0; | |
1429 | return 0; | |
1430 | } |