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