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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 | ||
39 | static QTAILQ_HEAD(, VLANState) vlans; | |
40 | static QTAILQ_HEAD(, VLANClientState) non_vlan_clients; | |
41 | ||
42 | int default_net = 1; | |
43 | ||
44 | /***********************************************************/ | |
45 | /* network device redirectors */ | |
46 | ||
47 | #if defined(DEBUG_NET) | |
48 | static void hex_dump(FILE *f, const uint8_t *buf, int size) | |
49 | { | |
50 | int len, i, j, c; | |
51 | ||
52 | for(i=0;i<size;i+=16) { | |
53 | len = size - i; | |
54 | if (len > 16) | |
55 | len = 16; | |
56 | fprintf(f, "%08x ", i); | |
57 | for(j=0;j<16;j++) { | |
58 | if (j < len) | |
59 | fprintf(f, " %02x", buf[i+j]); | |
60 | else | |
61 | fprintf(f, " "); | |
62 | } | |
63 | fprintf(f, " "); | |
64 | for(j=0;j<len;j++) { | |
65 | c = buf[i+j]; | |
66 | if (c < ' ' || c > '~') | |
67 | c = '.'; | |
68 | fprintf(f, "%c", c); | |
69 | } | |
70 | fprintf(f, "\n"); | |
71 | } | |
72 | } | |
73 | #endif | |
74 | ||
75 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) | |
76 | { | |
77 | const char *p, *p1; | |
78 | int len; | |
79 | p = *pp; | |
80 | p1 = strchr(p, sep); | |
81 | if (!p1) | |
82 | return -1; | |
83 | len = p1 - p; | |
84 | p1++; | |
85 | if (buf_size > 0) { | |
86 | if (len > buf_size - 1) | |
87 | len = buf_size - 1; | |
88 | memcpy(buf, p, len); | |
89 | buf[len] = '\0'; | |
90 | } | |
91 | *pp = p1; | |
92 | return 0; | |
93 | } | |
94 | ||
95 | int parse_host_src_port(struct sockaddr_in *haddr, | |
96 | struct sockaddr_in *saddr, | |
97 | const char *input_str) | |
98 | { | |
99 | char *str = qemu_strdup(input_str); | |
100 | char *host_str = str; | |
101 | char *src_str; | |
102 | const char *src_str2; | |
103 | char *ptr; | |
104 | ||
105 | /* | |
106 | * Chop off any extra arguments at the end of the string which | |
107 | * would start with a comma, then fill in the src port information | |
108 | * if it was provided else use the "any address" and "any port". | |
109 | */ | |
110 | if ((ptr = strchr(str,','))) | |
111 | *ptr = '\0'; | |
112 | ||
113 | if ((src_str = strchr(input_str,'@'))) { | |
114 | *src_str = '\0'; | |
115 | src_str++; | |
116 | } | |
117 | ||
118 | if (parse_host_port(haddr, host_str) < 0) | |
119 | goto fail; | |
120 | ||
121 | src_str2 = src_str; | |
122 | if (!src_str || *src_str == '\0') | |
123 | src_str2 = ":0"; | |
124 | ||
125 | if (parse_host_port(saddr, src_str2) < 0) | |
126 | goto fail; | |
127 | ||
128 | free(str); | |
129 | return(0); | |
130 | ||
131 | fail: | |
132 | free(str); | |
133 | return -1; | |
134 | } | |
135 | ||
136 | int parse_host_port(struct sockaddr_in *saddr, const char *str) | |
137 | { | |
138 | char buf[512]; | |
139 | struct hostent *he; | |
140 | const char *p, *r; | |
141 | int port; | |
142 | ||
143 | p = str; | |
144 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
145 | return -1; | |
146 | saddr->sin_family = AF_INET; | |
147 | if (buf[0] == '\0') { | |
148 | saddr->sin_addr.s_addr = 0; | |
149 | } else { | |
150 | if (qemu_isdigit(buf[0])) { | |
151 | if (!inet_aton(buf, &saddr->sin_addr)) | |
152 | return -1; | |
153 | } else { | |
154 | if ((he = gethostbyname(buf)) == NULL) | |
155 | return - 1; | |
156 | saddr->sin_addr = *(struct in_addr *)he->h_addr; | |
157 | } | |
158 | } | |
159 | port = strtol(p, (char **)&r, 0); | |
160 | if (r == p) | |
161 | return -1; | |
162 | saddr->sin_port = htons(port); | |
163 | return 0; | |
164 | } | |
165 | ||
166 | void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]) | |
167 | { | |
168 | snprintf(vc->info_str, sizeof(vc->info_str), | |
169 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", | |
170 | vc->model, | |
171 | macaddr[0], macaddr[1], macaddr[2], | |
172 | macaddr[3], macaddr[4], macaddr[5]); | |
173 | } | |
174 | ||
175 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) | |
176 | { | |
177 | static int index = 0; | |
178 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; | |
179 | ||
180 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) | |
181 | return; | |
182 | macaddr->a[0] = 0x52; | |
183 | macaddr->a[1] = 0x54; | |
184 | macaddr->a[2] = 0x00; | |
185 | macaddr->a[3] = 0x12; | |
186 | macaddr->a[4] = 0x34; | |
187 | macaddr->a[5] = 0x56 + index++; | |
188 | } | |
189 | ||
190 | static char *assign_name(VLANClientState *vc1, const char *model) | |
191 | { | |
192 | VLANState *vlan; | |
193 | char buf[256]; | |
194 | int id = 0; | |
195 | ||
196 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
197 | VLANClientState *vc; | |
198 | ||
199 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
200 | if (vc != vc1 && strcmp(vc->model, model) == 0) { | |
201 | id++; | |
202 | } | |
203 | } | |
204 | } | |
205 | ||
206 | snprintf(buf, sizeof(buf), "%s.%d", model, id); | |
207 | ||
208 | return qemu_strdup(buf); | |
209 | } | |
210 | ||
211 | static ssize_t qemu_deliver_packet(VLANClientState *sender, | |
212 | unsigned flags, | |
213 | const uint8_t *data, | |
214 | size_t size, | |
215 | void *opaque); | |
216 | static ssize_t qemu_deliver_packet_iov(VLANClientState *sender, | |
217 | unsigned flags, | |
218 | const struct iovec *iov, | |
219 | int iovcnt, | |
220 | void *opaque); | |
221 | ||
222 | VLANClientState *qemu_new_net_client(NetClientInfo *info, | |
223 | VLANState *vlan, | |
224 | VLANClientState *peer, | |
225 | const char *model, | |
226 | const char *name) | |
227 | { | |
228 | VLANClientState *vc; | |
229 | ||
230 | assert(info->size >= sizeof(VLANClientState)); | |
231 | ||
232 | vc = qemu_mallocz(info->size); | |
233 | ||
234 | vc->info = info; | |
235 | vc->model = qemu_strdup(model); | |
236 | if (name) { | |
237 | vc->name = qemu_strdup(name); | |
238 | } else { | |
239 | vc->name = assign_name(vc, model); | |
240 | } | |
241 | ||
242 | if (vlan) { | |
243 | assert(!peer); | |
244 | vc->vlan = vlan; | |
245 | QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next); | |
246 | } else { | |
247 | if (peer) { | |
248 | vc->peer = peer; | |
249 | peer->peer = vc; | |
250 | } | |
251 | QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next); | |
252 | ||
253 | vc->send_queue = qemu_new_net_queue(qemu_deliver_packet, | |
254 | qemu_deliver_packet_iov, | |
255 | vc); | |
256 | } | |
257 | ||
258 | return vc; | |
259 | } | |
260 | ||
261 | NICState *qemu_new_nic(NetClientInfo *info, | |
262 | NICConf *conf, | |
263 | const char *model, | |
264 | const char *name, | |
265 | void *opaque) | |
266 | { | |
267 | VLANClientState *nc; | |
268 | NICState *nic; | |
269 | ||
270 | assert(info->type == NET_CLIENT_TYPE_NIC); | |
271 | assert(info->size >= sizeof(NICState)); | |
272 | ||
273 | nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name); | |
274 | ||
275 | nic = DO_UPCAST(NICState, nc, nc); | |
276 | nic->conf = conf; | |
277 | nic->opaque = opaque; | |
278 | ||
279 | return nic; | |
280 | } | |
281 | ||
282 | void qemu_del_vlan_client(VLANClientState *vc) | |
283 | { | |
284 | if (vc->vlan) { | |
285 | QTAILQ_REMOVE(&vc->vlan->clients, vc, next); | |
286 | } else { | |
287 | if (vc->send_queue) { | |
288 | qemu_del_net_queue(vc->send_queue); | |
289 | } | |
290 | QTAILQ_REMOVE(&non_vlan_clients, vc, next); | |
291 | if (vc->peer) { | |
292 | vc->peer->peer = NULL; | |
293 | } | |
294 | } | |
295 | ||
296 | if (vc->info->cleanup) { | |
297 | vc->info->cleanup(vc); | |
298 | } | |
299 | ||
300 | qemu_free(vc->name); | |
301 | qemu_free(vc->model); | |
302 | qemu_free(vc); | |
303 | } | |
304 | ||
305 | VLANClientState * | |
306 | qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id, | |
307 | const char *client_str) | |
308 | { | |
309 | VLANState *vlan; | |
310 | VLANClientState *vc; | |
311 | ||
312 | vlan = qemu_find_vlan(vlan_id, 0); | |
313 | if (!vlan) { | |
314 | monitor_printf(mon, "unknown VLAN %d\n", vlan_id); | |
315 | return NULL; | |
316 | } | |
317 | ||
318 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
319 | if (!strcmp(vc->name, client_str)) { | |
320 | break; | |
321 | } | |
322 | } | |
323 | if (!vc) { | |
324 | monitor_printf(mon, "can't find device %s on VLAN %d\n", | |
325 | client_str, vlan_id); | |
326 | } | |
327 | ||
328 | return vc; | |
329 | } | |
330 | ||
331 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) | |
332 | { | |
333 | VLANClientState *nc; | |
334 | VLANState *vlan; | |
335 | ||
336 | QTAILQ_FOREACH(nc, &non_vlan_clients, next) { | |
337 | if (nc->info->type == NET_CLIENT_TYPE_NIC) { | |
338 | func(DO_UPCAST(NICState, nc, nc), opaque); | |
339 | } | |
340 | } | |
341 | ||
342 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
343 | QTAILQ_FOREACH(nc, &vlan->clients, next) { | |
344 | if (nc->info->type == NET_CLIENT_TYPE_NIC) { | |
345 | func(DO_UPCAST(NICState, nc, nc), opaque); | |
346 | } | |
347 | } | |
348 | } | |
349 | } | |
350 | ||
351 | int qemu_can_send_packet(VLANClientState *sender) | |
352 | { | |
353 | VLANState *vlan = sender->vlan; | |
354 | VLANClientState *vc; | |
355 | ||
356 | if (sender->peer) { | |
357 | if (sender->peer->receive_disabled) { | |
358 | return 0; | |
359 | } else if (sender->peer->info->can_receive && | |
360 | !sender->peer->info->can_receive(sender->peer)) { | |
361 | return 0; | |
362 | } else { | |
363 | return 1; | |
364 | } | |
365 | } | |
366 | ||
367 | if (!sender->vlan) { | |
368 | return 1; | |
369 | } | |
370 | ||
371 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
372 | if (vc == sender) { | |
373 | continue; | |
374 | } | |
375 | ||
376 | /* no can_receive() handler, they can always receive */ | |
377 | if (!vc->info->can_receive || vc->info->can_receive(vc)) { | |
378 | return 1; | |
379 | } | |
380 | } | |
381 | return 0; | |
382 | } | |
383 | ||
384 | static ssize_t qemu_deliver_packet(VLANClientState *sender, | |
385 | unsigned flags, | |
386 | const uint8_t *data, | |
387 | size_t size, | |
388 | void *opaque) | |
389 | { | |
390 | VLANClientState *vc = opaque; | |
391 | ssize_t ret; | |
392 | ||
393 | if (vc->link_down) { | |
394 | return size; | |
395 | } | |
396 | ||
397 | if (vc->receive_disabled) { | |
398 | return 0; | |
399 | } | |
400 | ||
401 | if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) { | |
402 | ret = vc->info->receive_raw(vc, data, size); | |
403 | } else { | |
404 | ret = vc->info->receive(vc, data, size); | |
405 | } | |
406 | ||
407 | if (ret == 0) { | |
408 | vc->receive_disabled = 1; | |
409 | }; | |
410 | ||
411 | return ret; | |
412 | } | |
413 | ||
414 | static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender, | |
415 | unsigned flags, | |
416 | const uint8_t *buf, | |
417 | size_t size, | |
418 | void *opaque) | |
419 | { | |
420 | VLANState *vlan = opaque; | |
421 | VLANClientState *vc; | |
422 | ssize_t ret = -1; | |
423 | ||
424 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
425 | ssize_t len; | |
426 | ||
427 | if (vc == sender) { | |
428 | continue; | |
429 | } | |
430 | ||
431 | if (vc->link_down) { | |
432 | ret = size; | |
433 | continue; | |
434 | } | |
435 | ||
436 | if (vc->receive_disabled) { | |
437 | ret = 0; | |
438 | continue; | |
439 | } | |
440 | ||
441 | if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) { | |
442 | len = vc->info->receive_raw(vc, buf, size); | |
443 | } else { | |
444 | len = vc->info->receive(vc, buf, size); | |
445 | } | |
446 | ||
447 | if (len == 0) { | |
448 | vc->receive_disabled = 1; | |
449 | } | |
450 | ||
451 | ret = (ret >= 0) ? ret : len; | |
452 | ||
453 | } | |
454 | ||
455 | return ret; | |
456 | } | |
457 | ||
458 | void qemu_purge_queued_packets(VLANClientState *vc) | |
459 | { | |
460 | NetQueue *queue; | |
461 | ||
462 | if (!vc->peer && !vc->vlan) { | |
463 | return; | |
464 | } | |
465 | ||
466 | if (vc->peer) { | |
467 | queue = vc->peer->send_queue; | |
468 | } else { | |
469 | queue = vc->vlan->send_queue; | |
470 | } | |
471 | ||
472 | qemu_net_queue_purge(queue, vc); | |
473 | } | |
474 | ||
475 | void qemu_flush_queued_packets(VLANClientState *vc) | |
476 | { | |
477 | NetQueue *queue; | |
478 | ||
479 | vc->receive_disabled = 0; | |
480 | ||
481 | if (vc->vlan) { | |
482 | queue = vc->vlan->send_queue; | |
483 | } else { | |
484 | queue = vc->send_queue; | |
485 | } | |
486 | ||
487 | qemu_net_queue_flush(queue); | |
488 | } | |
489 | ||
490 | static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender, | |
491 | unsigned flags, | |
492 | const uint8_t *buf, int size, | |
493 | NetPacketSent *sent_cb) | |
494 | { | |
495 | NetQueue *queue; | |
496 | ||
497 | #ifdef DEBUG_NET | |
498 | printf("qemu_send_packet_async:\n"); | |
499 | hex_dump(stdout, buf, size); | |
500 | #endif | |
501 | ||
502 | if (sender->link_down || (!sender->peer && !sender->vlan)) { | |
503 | return size; | |
504 | } | |
505 | ||
506 | if (sender->peer) { | |
507 | queue = sender->peer->send_queue; | |
508 | } else { | |
509 | queue = sender->vlan->send_queue; | |
510 | } | |
511 | ||
512 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); | |
513 | } | |
514 | ||
515 | ssize_t qemu_send_packet_async(VLANClientState *sender, | |
516 | const uint8_t *buf, int size, | |
517 | NetPacketSent *sent_cb) | |
518 | { | |
519 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
520 | buf, size, sent_cb); | |
521 | } | |
522 | ||
523 | void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) | |
524 | { | |
525 | qemu_send_packet_async(vc, buf, size, NULL); | |
526 | } | |
527 | ||
528 | ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size) | |
529 | { | |
530 | return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW, | |
531 | buf, size, NULL); | |
532 | } | |
533 | ||
534 | static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, | |
535 | int iovcnt) | |
536 | { | |
537 | uint8_t buffer[4096]; | |
538 | size_t offset = 0; | |
539 | int i; | |
540 | ||
541 | for (i = 0; i < iovcnt; i++) { | |
542 | size_t len; | |
543 | ||
544 | len = MIN(sizeof(buffer) - offset, iov[i].iov_len); | |
545 | memcpy(buffer + offset, iov[i].iov_base, len); | |
546 | offset += len; | |
547 | } | |
548 | ||
549 | return vc->info->receive(vc, buffer, offset); | |
550 | } | |
551 | ||
552 | static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt) | |
553 | { | |
554 | size_t offset = 0; | |
555 | int i; | |
556 | ||
557 | for (i = 0; i < iovcnt; i++) | |
558 | offset += iov[i].iov_len; | |
559 | return offset; | |
560 | } | |
561 | ||
562 | static ssize_t qemu_deliver_packet_iov(VLANClientState *sender, | |
563 | unsigned flags, | |
564 | const struct iovec *iov, | |
565 | int iovcnt, | |
566 | void *opaque) | |
567 | { | |
568 | VLANClientState *vc = opaque; | |
569 | ||
570 | if (vc->link_down) { | |
571 | return calc_iov_length(iov, iovcnt); | |
572 | } | |
573 | ||
574 | if (vc->info->receive_iov) { | |
575 | return vc->info->receive_iov(vc, iov, iovcnt); | |
576 | } else { | |
577 | return vc_sendv_compat(vc, iov, iovcnt); | |
578 | } | |
579 | } | |
580 | ||
581 | static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender, | |
582 | unsigned flags, | |
583 | const struct iovec *iov, | |
584 | int iovcnt, | |
585 | void *opaque) | |
586 | { | |
587 | VLANState *vlan = opaque; | |
588 | VLANClientState *vc; | |
589 | ssize_t ret = -1; | |
590 | ||
591 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
592 | ssize_t len; | |
593 | ||
594 | if (vc == sender) { | |
595 | continue; | |
596 | } | |
597 | ||
598 | if (vc->link_down) { | |
599 | ret = calc_iov_length(iov, iovcnt); | |
600 | continue; | |
601 | } | |
602 | ||
603 | assert(!(flags & QEMU_NET_PACKET_FLAG_RAW)); | |
604 | ||
605 | if (vc->info->receive_iov) { | |
606 | len = vc->info->receive_iov(vc, iov, iovcnt); | |
607 | } else { | |
608 | len = vc_sendv_compat(vc, iov, iovcnt); | |
609 | } | |
610 | ||
611 | ret = (ret >= 0) ? ret : len; | |
612 | } | |
613 | ||
614 | return ret; | |
615 | } | |
616 | ||
617 | ssize_t qemu_sendv_packet_async(VLANClientState *sender, | |
618 | const struct iovec *iov, int iovcnt, | |
619 | NetPacketSent *sent_cb) | |
620 | { | |
621 | NetQueue *queue; | |
622 | ||
623 | if (sender->link_down || (!sender->peer && !sender->vlan)) { | |
624 | return calc_iov_length(iov, iovcnt); | |
625 | } | |
626 | ||
627 | if (sender->peer) { | |
628 | queue = sender->peer->send_queue; | |
629 | } else { | |
630 | queue = sender->vlan->send_queue; | |
631 | } | |
632 | ||
633 | return qemu_net_queue_send_iov(queue, sender, | |
634 | QEMU_NET_PACKET_FLAG_NONE, | |
635 | iov, iovcnt, sent_cb); | |
636 | } | |
637 | ||
638 | ssize_t | |
639 | qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) | |
640 | { | |
641 | return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); | |
642 | } | |
643 | ||
644 | /* find or alloc a new VLAN */ | |
645 | VLANState *qemu_find_vlan(int id, int allocate) | |
646 | { | |
647 | VLANState *vlan; | |
648 | ||
649 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
650 | if (vlan->id == id) { | |
651 | return vlan; | |
652 | } | |
653 | } | |
654 | ||
655 | if (!allocate) { | |
656 | return NULL; | |
657 | } | |
658 | ||
659 | vlan = qemu_mallocz(sizeof(VLANState)); | |
660 | vlan->id = id; | |
661 | QTAILQ_INIT(&vlan->clients); | |
662 | ||
663 | vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet, | |
664 | qemu_vlan_deliver_packet_iov, | |
665 | vlan); | |
666 | ||
667 | QTAILQ_INSERT_TAIL(&vlans, vlan, next); | |
668 | ||
669 | return vlan; | |
670 | } | |
671 | ||
672 | VLANClientState *qemu_find_netdev(const char *id) | |
673 | { | |
674 | VLANClientState *vc; | |
675 | ||
676 | QTAILQ_FOREACH(vc, &non_vlan_clients, next) { | |
677 | if (!strcmp(vc->name, id)) { | |
678 | return vc; | |
679 | } | |
680 | } | |
681 | ||
682 | return NULL; | |
683 | } | |
684 | ||
685 | static int nic_get_free_idx(void) | |
686 | { | |
687 | int index; | |
688 | ||
689 | for (index = 0; index < MAX_NICS; index++) | |
690 | if (!nd_table[index].used) | |
691 | return index; | |
692 | return -1; | |
693 | } | |
694 | ||
695 | int qemu_show_nic_models(const char *arg, const char *const *models) | |
696 | { | |
697 | int i; | |
698 | ||
699 | if (!arg || strcmp(arg, "?")) | |
700 | return 0; | |
701 | ||
702 | fprintf(stderr, "qemu: Supported NIC models: "); | |
703 | for (i = 0 ; models[i]; i++) | |
704 | fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); | |
705 | return 1; | |
706 | } | |
707 | ||
708 | void qemu_check_nic_model(NICInfo *nd, const char *model) | |
709 | { | |
710 | const char *models[2]; | |
711 | ||
712 | models[0] = model; | |
713 | models[1] = NULL; | |
714 | ||
715 | if (qemu_show_nic_models(nd->model, models)) | |
716 | exit(0); | |
717 | if (qemu_find_nic_model(nd, models, model) < 0) | |
718 | exit(1); | |
719 | } | |
720 | ||
721 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, | |
722 | const char *default_model) | |
723 | { | |
724 | int i; | |
725 | ||
726 | if (!nd->model) | |
727 | nd->model = qemu_strdup(default_model); | |
728 | ||
729 | for (i = 0 ; models[i]; i++) { | |
730 | if (strcmp(nd->model, models[i]) == 0) | |
731 | return i; | |
732 | } | |
733 | ||
734 | qemu_error("qemu: Unsupported NIC model: %s\n", nd->model); | |
735 | return -1; | |
736 | } | |
737 | ||
738 | int net_handle_fd_param(Monitor *mon, const char *param) | |
739 | { | |
740 | if (!qemu_isdigit(param[0])) { | |
741 | int fd; | |
742 | ||
743 | fd = monitor_get_fd(mon, param); | |
744 | if (fd == -1) { | |
745 | qemu_error("No file descriptor named %s found", param); | |
746 | return -1; | |
747 | } | |
748 | ||
749 | return fd; | |
750 | } else { | |
751 | return strtol(param, NULL, 0); | |
752 | } | |
753 | } | |
754 | ||
755 | static int net_init_nic(QemuOpts *opts, | |
756 | Monitor *mon, | |
757 | const char *name, | |
758 | VLANState *vlan) | |
759 | { | |
760 | int idx; | |
761 | NICInfo *nd; | |
762 | const char *netdev; | |
763 | ||
764 | idx = nic_get_free_idx(); | |
765 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
766 | qemu_error("Too Many NICs\n"); | |
767 | return -1; | |
768 | } | |
769 | ||
770 | nd = &nd_table[idx]; | |
771 | ||
772 | memset(nd, 0, sizeof(*nd)); | |
773 | ||
774 | if ((netdev = qemu_opt_get(opts, "netdev"))) { | |
775 | nd->netdev = qemu_find_netdev(netdev); | |
776 | if (!nd->netdev) { | |
777 | qemu_error("netdev '%s' not found\n", netdev); | |
778 | return -1; | |
779 | } | |
780 | } else { | |
781 | assert(vlan); | |
782 | nd->vlan = vlan; | |
783 | } | |
784 | if (name) { | |
785 | nd->name = qemu_strdup(name); | |
786 | } | |
787 | if (qemu_opt_get(opts, "model")) { | |
788 | nd->model = qemu_strdup(qemu_opt_get(opts, "model")); | |
789 | } | |
790 | if (qemu_opt_get(opts, "addr")) { | |
791 | nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr")); | |
792 | } | |
793 | ||
794 | nd->macaddr[0] = 0x52; | |
795 | nd->macaddr[1] = 0x54; | |
796 | nd->macaddr[2] = 0x00; | |
797 | nd->macaddr[3] = 0x12; | |
798 | nd->macaddr[4] = 0x34; | |
799 | nd->macaddr[5] = 0x56 + idx; | |
800 | ||
801 | if (qemu_opt_get(opts, "macaddr") && | |
802 | net_parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) { | |
803 | qemu_error("invalid syntax for ethernet address\n"); | |
804 | return -1; | |
805 | } | |
806 | ||
807 | nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED); | |
808 | if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED && | |
809 | (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) { | |
810 | qemu_error("invalid # of vectors: %d\n", nd->nvectors); | |
811 | return -1; | |
812 | } | |
813 | ||
814 | nd->used = 1; | |
815 | nb_nics++; | |
816 | ||
817 | return idx; | |
818 | } | |
819 | ||
820 | #define NET_COMMON_PARAMS_DESC \ | |
821 | { \ | |
822 | .name = "type", \ | |
823 | .type = QEMU_OPT_STRING, \ | |
824 | .help = "net client type (nic, tap etc.)", \ | |
825 | }, { \ | |
826 | .name = "vlan", \ | |
827 | .type = QEMU_OPT_NUMBER, \ | |
828 | .help = "vlan number", \ | |
829 | }, { \ | |
830 | .name = "name", \ | |
831 | .type = QEMU_OPT_STRING, \ | |
832 | .help = "identifier for monitor commands", \ | |
833 | } | |
834 | ||
835 | typedef int (*net_client_init_func)(QemuOpts *opts, | |
836 | Monitor *mon, | |
837 | const char *name, | |
838 | VLANState *vlan); | |
839 | ||
840 | /* magic number, but compiler will warn if too small */ | |
841 | #define NET_MAX_DESC 20 | |
842 | ||
843 | static struct { | |
844 | const char *type; | |
845 | net_client_init_func init; | |
846 | QemuOptDesc desc[NET_MAX_DESC]; | |
847 | } net_client_types[] = { | |
848 | { | |
849 | .type = "none", | |
850 | .desc = { | |
851 | NET_COMMON_PARAMS_DESC, | |
852 | { /* end of list */ } | |
853 | }, | |
854 | }, { | |
855 | .type = "nic", | |
856 | .init = net_init_nic, | |
857 | .desc = { | |
858 | NET_COMMON_PARAMS_DESC, | |
859 | { | |
860 | .name = "netdev", | |
861 | .type = QEMU_OPT_STRING, | |
862 | .help = "id of -netdev to connect to", | |
863 | }, | |
864 | { | |
865 | .name = "macaddr", | |
866 | .type = QEMU_OPT_STRING, | |
867 | .help = "MAC address", | |
868 | }, { | |
869 | .name = "model", | |
870 | .type = QEMU_OPT_STRING, | |
871 | .help = "device model (e1000, rtl8139, virtio etc.)", | |
872 | }, { | |
873 | .name = "addr", | |
874 | .type = QEMU_OPT_STRING, | |
875 | .help = "PCI device address", | |
876 | }, { | |
877 | .name = "vectors", | |
878 | .type = QEMU_OPT_NUMBER, | |
879 | .help = "number of MSI-x vectors, 0 to disable MSI-X", | |
880 | }, | |
881 | { /* end of list */ } | |
882 | }, | |
883 | #ifdef CONFIG_SLIRP | |
884 | }, { | |
885 | .type = "user", | |
886 | .init = net_init_slirp, | |
887 | .desc = { | |
888 | NET_COMMON_PARAMS_DESC, | |
889 | { | |
890 | .name = "hostname", | |
891 | .type = QEMU_OPT_STRING, | |
892 | .help = "client hostname reported by the builtin DHCP server", | |
893 | }, { | |
894 | .name = "restrict", | |
895 | .type = QEMU_OPT_STRING, | |
896 | .help = "isolate the guest from the host (y|yes|n|no)", | |
897 | }, { | |
898 | .name = "ip", | |
899 | .type = QEMU_OPT_STRING, | |
900 | .help = "legacy parameter, use net= instead", | |
901 | }, { | |
902 | .name = "net", | |
903 | .type = QEMU_OPT_STRING, | |
904 | .help = "IP address and optional netmask", | |
905 | }, { | |
906 | .name = "host", | |
907 | .type = QEMU_OPT_STRING, | |
908 | .help = "guest-visible address of the host", | |
909 | }, { | |
910 | .name = "tftp", | |
911 | .type = QEMU_OPT_STRING, | |
912 | .help = "root directory of the built-in TFTP server", | |
913 | }, { | |
914 | .name = "bootfile", | |
915 | .type = QEMU_OPT_STRING, | |
916 | .help = "BOOTP filename, for use with tftp=", | |
917 | }, { | |
918 | .name = "dhcpstart", | |
919 | .type = QEMU_OPT_STRING, | |
920 | .help = "the first of the 16 IPs the built-in DHCP server can assign", | |
921 | }, { | |
922 | .name = "dns", | |
923 | .type = QEMU_OPT_STRING, | |
924 | .help = "guest-visible address of the virtual nameserver", | |
925 | }, { | |
926 | .name = "smb", | |
927 | .type = QEMU_OPT_STRING, | |
928 | .help = "root directory of the built-in SMB server", | |
929 | }, { | |
930 | .name = "smbserver", | |
931 | .type = QEMU_OPT_STRING, | |
932 | .help = "IP address of the built-in SMB server", | |
933 | }, { | |
934 | .name = "hostfwd", | |
935 | .type = QEMU_OPT_STRING, | |
936 | .help = "guest port number to forward incoming TCP or UDP connections", | |
937 | }, { | |
938 | .name = "guestfwd", | |
939 | .type = QEMU_OPT_STRING, | |
940 | .help = "IP address and port to forward guest TCP connections", | |
941 | }, | |
942 | { /* end of list */ } | |
943 | }, | |
944 | #endif | |
945 | }, { | |
946 | .type = "tap", | |
947 | .init = net_init_tap, | |
948 | .desc = { | |
949 | NET_COMMON_PARAMS_DESC, | |
950 | { | |
951 | .name = "ifname", | |
952 | .type = QEMU_OPT_STRING, | |
953 | .help = "interface name", | |
954 | }, | |
955 | #ifndef _WIN32 | |
956 | { | |
957 | .name = "fd", | |
958 | .type = QEMU_OPT_STRING, | |
959 | .help = "file descriptor of an already opened tap", | |
960 | }, { | |
961 | .name = "script", | |
962 | .type = QEMU_OPT_STRING, | |
963 | .help = "script to initialize the interface", | |
964 | }, { | |
965 | .name = "downscript", | |
966 | .type = QEMU_OPT_STRING, | |
967 | .help = "script to shut down the interface", | |
968 | }, { | |
969 | .name = "sndbuf", | |
970 | .type = QEMU_OPT_SIZE, | |
971 | .help = "send buffer limit" | |
972 | }, { | |
973 | .name = "vnet_hdr", | |
974 | .type = QEMU_OPT_BOOL, | |
975 | .help = "enable the IFF_VNET_HDR flag on the tap interface" | |
976 | }, | |
977 | #endif /* _WIN32 */ | |
978 | { /* end of list */ } | |
979 | }, | |
980 | }, { | |
981 | .type = "socket", | |
982 | .init = net_init_socket, | |
983 | .desc = { | |
984 | NET_COMMON_PARAMS_DESC, | |
985 | { | |
986 | .name = "fd", | |
987 | .type = QEMU_OPT_STRING, | |
988 | .help = "file descriptor of an already opened socket", | |
989 | }, { | |
990 | .name = "listen", | |
991 | .type = QEMU_OPT_STRING, | |
992 | .help = "port number, and optional hostname, to listen on", | |
993 | }, { | |
994 | .name = "connect", | |
995 | .type = QEMU_OPT_STRING, | |
996 | .help = "port number, and optional hostname, to connect to", | |
997 | }, { | |
998 | .name = "mcast", | |
999 | .type = QEMU_OPT_STRING, | |
1000 | .help = "UDP multicast address and port number", | |
1001 | }, | |
1002 | { /* end of list */ } | |
1003 | }, | |
1004 | #ifdef CONFIG_VDE | |
1005 | }, { | |
1006 | .type = "vde", | |
1007 | .init = net_init_vde, | |
1008 | .desc = { | |
1009 | NET_COMMON_PARAMS_DESC, | |
1010 | { | |
1011 | .name = "sock", | |
1012 | .type = QEMU_OPT_STRING, | |
1013 | .help = "socket path", | |
1014 | }, { | |
1015 | .name = "port", | |
1016 | .type = QEMU_OPT_NUMBER, | |
1017 | .help = "port number", | |
1018 | }, { | |
1019 | .name = "group", | |
1020 | .type = QEMU_OPT_STRING, | |
1021 | .help = "group owner of socket", | |
1022 | }, { | |
1023 | .name = "mode", | |
1024 | .type = QEMU_OPT_NUMBER, | |
1025 | .help = "permissions for socket", | |
1026 | }, | |
1027 | { /* end of list */ } | |
1028 | }, | |
1029 | #endif | |
1030 | }, { | |
1031 | .type = "dump", | |
1032 | .init = net_init_dump, | |
1033 | .desc = { | |
1034 | NET_COMMON_PARAMS_DESC, | |
1035 | { | |
1036 | .name = "len", | |
1037 | .type = QEMU_OPT_SIZE, | |
1038 | .help = "per-packet size limit (64k default)", | |
1039 | }, { | |
1040 | .name = "file", | |
1041 | .type = QEMU_OPT_STRING, | |
1042 | .help = "dump file path (default is qemu-vlan0.pcap)", | |
1043 | }, | |
1044 | { /* end of list */ } | |
1045 | }, | |
1046 | }, | |
1047 | { /* end of list */ } | |
1048 | }; | |
1049 | ||
1050 | int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev) | |
1051 | { | |
1052 | const char *name; | |
1053 | const char *type; | |
1054 | int i; | |
1055 | ||
1056 | type = qemu_opt_get(opts, "type"); | |
1057 | ||
1058 | if (!is_netdev) { | |
1059 | if (!type) { | |
1060 | qemu_error("No type specified for -net\n"); | |
1061 | return -1; | |
1062 | } | |
1063 | } else { | |
1064 | if (!type) { | |
1065 | qemu_error("No type specified for -netdev\n"); | |
1066 | return -1; | |
1067 | } | |
1068 | ||
1069 | if (strcmp(type, "tap") != 0 && | |
1070 | #ifdef CONFIG_SLIRP | |
1071 | strcmp(type, "user") != 0 && | |
1072 | #endif | |
1073 | #ifdef CONFIG_VDE | |
1074 | strcmp(type, "vde") != 0 && | |
1075 | #endif | |
1076 | strcmp(type, "socket") != 0) { | |
1077 | qemu_error("The '%s' network backend type is not valid with -netdev\n", | |
1078 | type); | |
1079 | return -1; | |
1080 | } | |
1081 | ||
1082 | if (qemu_opt_get(opts, "vlan")) { | |
1083 | qemu_error("The 'vlan' parameter is not valid with -netdev\n"); | |
1084 | return -1; | |
1085 | } | |
1086 | if (qemu_opt_get(opts, "name")) { | |
1087 | qemu_error("The 'name' parameter is not valid with -netdev\n"); | |
1088 | return -1; | |
1089 | } | |
1090 | if (!qemu_opts_id(opts)) { | |
1091 | qemu_error("The id= parameter is required with -netdev\n"); | |
1092 | return -1; | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | name = qemu_opts_id(opts); | |
1097 | if (!name) { | |
1098 | name = qemu_opt_get(opts, "name"); | |
1099 | } | |
1100 | ||
1101 | for (i = 0; net_client_types[i].type != NULL; i++) { | |
1102 | if (!strcmp(net_client_types[i].type, type)) { | |
1103 | VLANState *vlan = NULL; | |
1104 | ||
1105 | if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) { | |
1106 | return -1; | |
1107 | } | |
1108 | ||
1109 | /* Do not add to a vlan if it's a -netdev or a nic with a | |
1110 | * netdev= parameter. */ | |
1111 | if (!(is_netdev || | |
1112 | (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) { | |
1113 | vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); | |
1114 | } | |
1115 | ||
1116 | if (net_client_types[i].init) { | |
1117 | return net_client_types[i].init(opts, mon, name, vlan); | |
1118 | } else { | |
1119 | return 0; | |
1120 | } | |
1121 | } | |
1122 | } | |
1123 | ||
1124 | qemu_error("Invalid -net type '%s'\n", 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_net_opts, opts_str ? opts_str : "", NULL); | |
1160 | if (!opts) { | |
1161 | monitor_printf(mon, "parsing network options '%s' failed\n", | |
1162 | opts_str ? opts_str : ""); | |
1163 | return; | |
1164 | } | |
1165 | ||
1166 | qemu_opt_set(opts, "type", device); | |
1167 | ||
1168 | if (net_client_init(mon, opts, 0) < 0) { | |
1169 | monitor_printf(mon, "adding host network device %s failed\n", device); | |
1170 | } | |
1171 | } | |
1172 | ||
1173 | void net_host_device_remove(Monitor *mon, const QDict *qdict) | |
1174 | { | |
1175 | VLANClientState *vc; | |
1176 | int vlan_id = qdict_get_int(qdict, "vlan_id"); | |
1177 | const char *device = qdict_get_str(qdict, "device"); | |
1178 | ||
1179 | vc = qemu_find_vlan_client_by_name(mon, vlan_id, device); | |
1180 | if (!vc) { | |
1181 | return; | |
1182 | } | |
1183 | if (!net_host_check_device(vc->model)) { | |
1184 | monitor_printf(mon, "invalid host network device %s\n", device); | |
1185 | return; | |
1186 | } | |
1187 | qemu_del_vlan_client(vc); | |
1188 | } | |
1189 | ||
1190 | void net_set_boot_mask(int net_boot_mask) | |
1191 | { | |
1192 | int i; | |
1193 | ||
1194 | /* Only the first four NICs may be bootable */ | |
1195 | net_boot_mask = net_boot_mask & 0xF; | |
1196 | ||
1197 | for (i = 0; i < nb_nics; i++) { | |
1198 | if (net_boot_mask & (1 << i)) { | |
1199 | nd_table[i].bootable = 1; | |
1200 | net_boot_mask &= ~(1 << i); | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | if (net_boot_mask) { | |
1205 | fprintf(stderr, "Cannot boot from non-existent NIC\n"); | |
1206 | exit(1); | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | void do_info_network(Monitor *mon) | |
1211 | { | |
1212 | VLANState *vlan; | |
1213 | VLANClientState *vc; | |
1214 | ||
1215 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
1216 | monitor_printf(mon, "VLAN %d devices:\n", vlan->id); | |
1217 | ||
1218 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
1219 | monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str); | |
1220 | } | |
1221 | } | |
1222 | monitor_printf(mon, "Devices not on any VLAN:\n"); | |
1223 | QTAILQ_FOREACH(vc, &non_vlan_clients, next) { | |
1224 | monitor_printf(mon, " %s: %s", vc->name, vc->info_str); | |
1225 | if (vc->peer) { | |
1226 | monitor_printf(mon, " peer=%s", vc->peer->name); | |
1227 | } | |
1228 | monitor_printf(mon, "\n"); | |
1229 | } | |
1230 | } | |
1231 | ||
1232 | void do_set_link(Monitor *mon, const QDict *qdict) | |
1233 | { | |
1234 | VLANState *vlan; | |
1235 | VLANClientState *vc = NULL; | |
1236 | const char *name = qdict_get_str(qdict, "name"); | |
1237 | const char *up_or_down = qdict_get_str(qdict, "up_or_down"); | |
1238 | ||
1239 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
1240 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
1241 | if (strcmp(vc->name, name) == 0) { | |
1242 | goto done; | |
1243 | } | |
1244 | } | |
1245 | } | |
1246 | vc = qemu_find_netdev(name); | |
1247 | done: | |
1248 | ||
1249 | if (!vc) { | |
1250 | monitor_printf(mon, "could not find network device '%s'\n", name); | |
1251 | return; | |
1252 | } | |
1253 | ||
1254 | if (strcmp(up_or_down, "up") == 0) | |
1255 | vc->link_down = 0; | |
1256 | else if (strcmp(up_or_down, "down") == 0) | |
1257 | vc->link_down = 1; | |
1258 | else | |
1259 | monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' " | |
1260 | "valid\n", up_or_down); | |
1261 | ||
1262 | if (vc->info->link_status_changed) { | |
1263 | vc->info->link_status_changed(vc); | |
1264 | } | |
1265 | } | |
1266 | ||
1267 | void net_cleanup(void) | |
1268 | { | |
1269 | VLANState *vlan; | |
1270 | VLANClientState *vc, *next_vc; | |
1271 | ||
1272 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
1273 | QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) { | |
1274 | qemu_del_vlan_client(vc); | |
1275 | } | |
1276 | } | |
1277 | ||
1278 | QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) { | |
1279 | qemu_del_vlan_client(vc); | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | void net_check_clients(void) | |
1284 | { | |
1285 | VLANState *vlan; | |
1286 | VLANClientState *vc; | |
1287 | int has_nic = 0, has_host_dev = 0; | |
1288 | ||
1289 | QTAILQ_FOREACH(vlan, &vlans, next) { | |
1290 | QTAILQ_FOREACH(vc, &vlan->clients, next) { | |
1291 | switch (vc->info->type) { | |
1292 | case NET_CLIENT_TYPE_NIC: | |
1293 | has_nic = 1; | |
1294 | break; | |
1295 | case NET_CLIENT_TYPE_SLIRP: | |
1296 | case NET_CLIENT_TYPE_TAP: | |
1297 | case NET_CLIENT_TYPE_SOCKET: | |
1298 | case NET_CLIENT_TYPE_VDE: | |
1299 | has_host_dev = 1; | |
1300 | break; | |
1301 | default: ; | |
1302 | } | |
1303 | } | |
1304 | if (has_host_dev && !has_nic) | |
1305 | fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id); | |
1306 | if (has_nic && !has_host_dev) | |
1307 | fprintf(stderr, | |
1308 | "Warning: vlan %d is not connected to host network\n", | |
1309 | vlan->id); | |
1310 | } | |
1311 | QTAILQ_FOREACH(vc, &non_vlan_clients, next) { | |
1312 | if (!vc->peer) { | |
1313 | fprintf(stderr, "Warning: %s %s has no peer\n", | |
1314 | vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev", | |
1315 | vc->name); | |
1316 | } | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | static int net_init_client(QemuOpts *opts, void *dummy) | |
1321 | { | |
1322 | if (net_client_init(NULL, opts, 0) < 0) | |
1323 | return -1; | |
1324 | return 0; | |
1325 | } | |
1326 | ||
1327 | static int net_init_netdev(QemuOpts *opts, void *dummy) | |
1328 | { | |
1329 | return net_client_init(NULL, opts, 1); | |
1330 | } | |
1331 | ||
1332 | int net_init_clients(void) | |
1333 | { | |
1334 | if (default_net) { | |
1335 | /* if no clients, we use a default config */ | |
1336 | qemu_opts_set(&qemu_net_opts, NULL, "type", "nic"); | |
1337 | #ifdef CONFIG_SLIRP | |
1338 | qemu_opts_set(&qemu_net_opts, NULL, "type", "user"); | |
1339 | #endif | |
1340 | } | |
1341 | ||
1342 | QTAILQ_INIT(&vlans); | |
1343 | QTAILQ_INIT(&non_vlan_clients); | |
1344 | ||
1345 | if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1) | |
1346 | return -1; | |
1347 | ||
1348 | if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) { | |
1349 | return -1; | |
1350 | } | |
1351 | ||
1352 | return 0; | |
1353 | } | |
1354 | ||
1355 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) | |
1356 | { | |
1357 | #if defined(CONFIG_SLIRP) | |
1358 | int ret; | |
1359 | if (net_slirp_parse_legacy(opts_list, optarg, &ret)) { | |
1360 | return ret; | |
1361 | } | |
1362 | #endif | |
1363 | ||
1364 | if (!qemu_opts_parse(opts_list, optarg, "type")) { | |
1365 | return -1; | |
1366 | } | |
1367 | ||
1368 | default_net = 0; | |
1369 | return 0; | |
1370 | } |