]> Git Repo - qemu.git/blame - net.c
projects / qemu.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
net: use qemu_send_packet_raw() in qemu_announce_self()
[qemu.git] / net.c
CommitLineData
63a01ef8
AL		 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 */
63a01ef8
AL		 24#include <unistd.h>
25#include <fcntl.h>
26#include <signal.h>
27#include <time.h>
28#include <errno.h>
29#include <sys/time.h>
30#include <zlib.h>
31
71e72a19 32/* Needed early for CONFIG_BSD etc. */
d40cdb10
BS		 33#include "config-host.h"
34
63a01ef8
AL		 35#ifndef _WIN32
36#include <sys/times.h>
37#include <sys/wait.h>
38#include <termios.h>
39#include <sys/mman.h>
40#include <sys/ioctl.h>
24646c7e 41#include <sys/resource.h>
63a01ef8
AL		 42#include <sys/socket.h>
43#include <netinet/in.h>
24646c7e
BS		 44#include <net/if.h>
45#ifdef __NetBSD__
46#include <net/if_tap.h>
47#endif
48#ifdef __linux__
76682299 49#include "tap-linux.h"
24646c7e
BS		 50#endif
51#include <arpa/inet.h>
63a01ef8
AL		 52#include <dirent.h>
53#include <netdb.h>
54#include <sys/select.h>
71e72a19 55#ifdef CONFIG_BSD
63a01ef8 56#include <sys/stat.h>
c5e97233 57#if defined(__FreeBSD__) || defined(__DragonFly__)
63a01ef8 58#include <libutil.h>
24646c7e
BS		 59#else
60#include <util.h>
63a01ef8
AL		 61#endif
62#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
63#include <freebsd/stdlib.h>
64#else
65#ifdef __linux__
63a01ef8
AL		 66#include <pty.h>
67#include <malloc.h>
68#include <linux/rtc.h>
69
70/* For the benefit of older linux systems which don't supply it,
71 we use a local copy of hpet.h. */
72/* #include <linux/hpet.h> */
73#include "hpet.h"
74
75#include <linux/ppdev.h>
76#include <linux/parport.h>
77#endif
78#ifdef __sun__
79#include <sys/stat.h>
80#include <sys/ethernet.h>
81#include <sys/sockio.h>
82#include <netinet/arp.h>
83#include <netinet/in.h>
84#include <netinet/in_systm.h>
85#include <netinet/ip.h>
86#include <netinet/ip_icmp.h> // must come after ip.h
87#include <netinet/udp.h>
88#include <netinet/tcp.h>
89#include <net/if.h>
90#include <syslog.h>
91#include <stropts.h>
92#endif
93#endif
94#endif
95
63a01ef8
AL		 96#if defined(__OpenBSD__)
97#include <util.h>
98#endif
99
100#if defined(CONFIG_VDE)
101#include <libvdeplug.h>
102#endif
103
511d2b14
BS		 104#include "qemu-common.h"
105#include "net.h"
106#include "monitor.h"
107#include "sysemu.h"
108#include "qemu-timer.h"
109#include "qemu-char.h"
110#include "audio/audio.h"
111#include "qemu_socket.h"
bb9ea79e 112#include "qemu-log.h"
f83c6e10 113#include "qemu-config.h"
511d2b14 114
d918f23e 115#include "slirp/libslirp.h"
511d2b14 116
5610c3aa 117static QTAILQ_HEAD(, VLANState) vlans;
577c4af9 118static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
63a01ef8
AL		 119
120/***********************************************************/
121/* network device redirectors */
122
123#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
124static void hex_dump(FILE *f, const uint8_t *buf, int size)
125{
126 int len, i, j, c;
127
128 for(i=0;i<size;i+=16) {
129 len = size - i;
130 if (len > 16)
131 len = 16;
132 fprintf(f, "%08x ", i);
133 for(j=0;j<16;j++) {
134 if (j < len)
135 fprintf(f, " %02x", buf[i+j]);
136 else
137 fprintf(f, " ");
138 }
139 fprintf(f, " ");
140 for(j=0;j<len;j++) {
141 c = buf[i+j];
142 if (c < ' ' || c > '~')
143 c = '.';
144 fprintf(f, "%c", c);
145 }
146 fprintf(f, "\n");
147 }
148}
149#endif
150
151static int parse_macaddr(uint8_t *macaddr, const char *p)
152{
153 int i;
154 char *last_char;
155 long int offset;
156
157 errno = 0;
158 offset = strtol(p, &last_char, 0);
159 if (0 == errno && '\0' == *last_char &&
160 offset >= 0 && offset <= 0xFFFFFF) {
161 macaddr[3] = (offset & 0xFF0000) >> 16;
162 macaddr[4] = (offset & 0xFF00) >> 8;
163 macaddr[5] = offset & 0xFF;
164 return 0;
165 } else {
166 for(i = 0; i < 6; i++) {
167 macaddr[i] = strtol(p, (char **)&p, 16);
168 if (i == 5) {
169 if (*p != '\0')
170 return -1;
171 } else {
172 if (*p != ':' && *p != '-')
173 return -1;
174 p++;
175 }
176 }
177 return 0;
178 }
179
180 return -1;
181}
182
183static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
184{
185 const char *p, *p1;
186 int len;
187 p = *pp;
188 p1 = strchr(p, sep);
189 if (!p1)
190 return -1;
191 len = p1 - p;
192 p1++;
193 if (buf_size > 0) {
194 if (len > buf_size - 1)
195 len = buf_size - 1;
196 memcpy(buf, p, len);
197 buf[len] = '\0';
198 }
199 *pp = p1;
200 return 0;
201}
202
203int parse_host_src_port(struct sockaddr_in *haddr,
204 struct sockaddr_in *saddr,
205 const char *input_str)
206{
207 char *str = strdup(input_str);
208 char *host_str = str;
209 char *src_str;
210 const char *src_str2;
211 char *ptr;
212
213 /*
214 * Chop off any extra arguments at the end of the string which
215 * would start with a comma, then fill in the src port information
216 * if it was provided else use the "any address" and "any port".
217 */
218 if ((ptr = strchr(str,',')))
219 *ptr = '\0';
220
221 if ((src_str = strchr(input_str,'@'))) {
222 *src_str = '\0';
223 src_str++;
224 }
225
226 if (parse_host_port(haddr, host_str) < 0)
227 goto fail;
228
229 src_str2 = src_str;
230 if (!src_str || *src_str == '\0')
231 src_str2 = ":0";
232
233 if (parse_host_port(saddr, src_str2) < 0)
234 goto fail;
235
236 free(str);
237 return(0);
238
239fail:
240 free(str);
241 return -1;
242}
243
244int parse_host_port(struct sockaddr_in *saddr, const char *str)
245{
246 char buf[512];
247 struct hostent *he;
248 const char *p, *r;
249 int port;
250
251 p = str;
252 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
253 return -1;
254 saddr->sin_family = AF_INET;
255 if (buf[0] == '\0') {
256 saddr->sin_addr.s_addr = 0;
257 } else {
cd390083 258 if (qemu_isdigit(buf[0])) {
63a01ef8
AL		 259 if (!inet_aton(buf, &saddr->sin_addr))
260 return -1;
261 } else {
262 if ((he = gethostbyname(buf)) == NULL)
263 return - 1;
264 saddr->sin_addr = *(struct in_addr *)he->h_addr;
265 }
266 }
267 port = strtol(p, (char **)&r, 0);
268 if (r == p)
269 return -1;
270 saddr->sin_port = htons(port);
271 return 0;
272}
273
7cb7434b
AL		 274void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
275{
276 snprintf(vc->info_str, sizeof(vc->info_str),
4dda4063
AL		 277 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
278 vc->model,
7cb7434b
AL		 279 macaddr[0], macaddr[1], macaddr[2],
280 macaddr[3], macaddr[4], macaddr[5]);
281}
282
76d32cba
GH		 283void qemu_macaddr_default_if_unset(MACAddr *macaddr)
284{
285 static int index = 0;
286 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
287
288 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
289 return;
290 macaddr->a[0] = 0x52;
291 macaddr->a[1] = 0x54;
292 macaddr->a[2] = 0x00;
293 macaddr->a[3] = 0x12;
294 macaddr->a[4] = 0x34;
295 macaddr->a[5] = 0x56 + index++;
296}
297
676cff29
AL		 298static char *assign_name(VLANClientState *vc1, const char *model)
299{
300 VLANState *vlan;
301 char buf[256];
302 int id = 0;
303
5610c3aa 304 QTAILQ_FOREACH(vlan, &vlans, next) {
676cff29
AL		 305 VLANClientState *vc;
306
5610c3aa
MM		 307 QTAILQ_FOREACH(vc, &vlan->clients, next) {
308 if (vc != vc1 && strcmp(vc->model, model) == 0) {
676cff29 309 id++;
5610c3aa
MM		 310 }
311 }
676cff29
AL		 312 }
313
314 snprintf(buf, sizeof(buf), "%s.%d", model, id);
315
02374aa0 316 return qemu_strdup(buf);
676cff29
AL		 317}
318
9a6ecb30 319static ssize_t qemu_deliver_packet(VLANClientState *sender,
c0b8e49c 320 unsigned flags,
9a6ecb30
MM		 321 const uint8_t *data,
322 size_t size,
323 void *opaque);
324static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
c0b8e49c 325 unsigned flags,
9a6ecb30
MM		 326 const struct iovec *iov,
327 int iovcnt,
328 void *opaque);
329
bb6e6364
MM		 330VLANClientState *qemu_new_vlan_client(net_client_type type,
331 VLANState *vlan,
283c7c63 332 VLANClientState *peer,
bf38c1a0 333 const char *model,
7a9f6e4a 334 const char *name,
cda9046b
MM		 335 NetCanReceive *can_receive,
336 NetReceive *receive,
70783b9c 337 NetReceive *receive_raw,
cda9046b 338 NetReceiveIOV *receive_iov,
b946a153 339 NetCleanup *cleanup,
63a01ef8
AL		 340 void *opaque)
341{
5610c3aa
MM		 342 VLANClientState *vc;
343
63a01ef8 344 vc = qemu_mallocz(sizeof(VLANClientState));
5610c3aa 345
bb6e6364 346 vc->type = type;
02374aa0 347 vc->model = qemu_strdup(model);
7a9f6e4a 348 if (name)
02374aa0 349 vc->name = qemu_strdup(name);
7a9f6e4a
AL		 350 else
351 vc->name = assign_name(vc, model);
cda9046b
MM		 352 vc->can_receive = can_receive;
353 vc->receive = receive;
70783b9c 354 vc->receive_raw = receive_raw;
cda9046b 355 vc->receive_iov = receive_iov;
b946a153 356 vc->cleanup = cleanup;
63a01ef8 357 vc->opaque = opaque;
5610c3aa 358
d80b9fc6 359 if (vlan) {
283c7c63 360 assert(!peer);
d80b9fc6
MM		 361 vc->vlan = vlan;
362 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
577c4af9 363 } else {
283c7c63
MM		 364 if (peer) {
365 vc->peer = peer;
366 peer->peer = vc;
367 }
577c4af9 368 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
9a6ecb30
MM		 369
370 vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
371 qemu_deliver_packet_iov,
372 vc);
d80b9fc6 373 }
63a01ef8 374
63a01ef8
AL		 375 return vc;
376}
377
378void qemu_del_vlan_client(VLANClientState *vc)
379{
d80b9fc6
MM		 380 if (vc->vlan) {
381 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
577c4af9 382 } else {
9a6ecb30
MM		 383 if (vc->send_queue) {
384 qemu_del_net_queue(vc->send_queue);
385 }
577c4af9 386 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
283c7c63
MM		 387 if (vc->peer) {
388 vc->peer->peer = NULL;
389 }
d80b9fc6 390 }
63a01ef8 391
5610c3aa
MM		 392 if (vc->cleanup) {
393 vc->cleanup(vc);
394 }
395
396 qemu_free(vc->name);
397 qemu_free(vc->model);
398 qemu_free(vc);
63a01ef8
AL		 399}
400
8b13c4a7
AL		 401VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
402{
5610c3aa 403 VLANClientState *vc;
8b13c4a7 404
5610c3aa
MM		 405 QTAILQ_FOREACH(vc, &vlan->clients, next) {
406 if (vc->opaque == opaque) {
407 return vc;
408 }
409 }
8b13c4a7
AL		 410
411 return NULL;
412}
413
1a609520
JK		 414static VLANClientState *
415qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
416 const char *client_str)
417{
418 VLANState *vlan;
419 VLANClientState *vc;
420
421 vlan = qemu_find_vlan(vlan_id, 0);
422 if (!vlan) {
423 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
424 return NULL;
425 }
426
5610c3aa 427 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1a609520
JK		 428 if (!strcmp(vc->name, client_str)) {
429 break;
430 }
431 }
432 if (!vc) {
433 monitor_printf(mon, "can't find device %s on VLAN %d\n",
434 client_str, vlan_id);
435 }
436
437 return vc;
438}
439
2e1e0641 440int qemu_can_send_packet(VLANClientState *sender)
63a01ef8 441{
2e1e0641 442 VLANState *vlan = sender->vlan;
63a01ef8
AL		 443 VLANClientState *vc;
444
9a6ecb30
MM		 445 if (sender->peer) {
446 if (!sender->peer->can_receive ||
447 sender->peer->can_receive(sender->peer)) {
448 return 1;
449 } else {
450 return 0;
451 }
452 }
453
d80b9fc6
MM		 454 if (!sender->vlan) {
455 return 1;
456 }
457
5610c3aa 458 QTAILQ_FOREACH(vc, &vlan->clients, next) {
2e1e0641
MM		 459 if (vc == sender) {
460 continue;
461 }
462
cda9046b 463 /* no can_receive() handler, they can always receive */
e3f5ec2b 464 if (!vc->can_receive || vc->can_receive(vc)) {
2e1e0641 465 return 1;
63a01ef8
AL		 466 }
467 }
468 return 0;
469}
470
9a6ecb30 471static ssize_t qemu_deliver_packet(VLANClientState *sender,
c0b8e49c 472 unsigned flags,
9a6ecb30
MM		 473 const uint8_t *data,
474 size_t size,
475 void *opaque)
476{
477 VLANClientState *vc = opaque;
478
479 if (vc->link_down) {
480 return size;
481 }
482
ca77d175
MM		 483 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw)
484 return vc->receive_raw(vc, data, size);
485 else
486 return vc->receive(vc, data, size);
9a6ecb30
MM		 487}
488
f7105843 489static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
c0b8e49c 490 unsigned flags,
f7105843
MM		 491 const uint8_t *buf,
492 size_t size,
493 void *opaque)
63a01ef8 494{
f7105843 495 VLANState *vlan = opaque;
63a01ef8 496 VLANClientState *vc;
3e021d40 497 int ret = -1;
63a01ef8 498
f7105843 499 QTAILQ_FOREACH(vc, &vlan->clients, next) {
3e021d40
MM		 500 ssize_t len;
501
502 if (vc == sender) {
503 continue;
764a4d1d 504 }
3e021d40
MM		 505
506 if (vc->link_down) {
507 ret = size;
508 continue;
509 }
510
ca77d175
MM		 511 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw)
512 len = vc->receive_raw(vc, buf, size);
513 else
514 len = vc->receive(vc, buf, size);
3e021d40
MM		 515
516 ret = (ret >= 0) ? ret : len;
764a4d1d 517 }
3e021d40
MM		 518
519 return ret;
764a4d1d
AL		 520}
521
8cad5516
MM		 522void qemu_purge_queued_packets(VLANClientState *vc)
523{
9a6ecb30
MM		 524 NetQueue *queue;
525
526 if (!vc->peer && !vc->vlan) {
d80b9fc6 527 return;
9a6ecb30 528 }
d80b9fc6 529
9a6ecb30
MM		 530 if (vc->peer) {
531 queue = vc->peer->send_queue;
532 } else {
533 queue = vc->vlan->send_queue;
534 }
535
536 qemu_net_queue_purge(queue, vc);
8cad5516
MM		 537}
538
f3b6c7fc 539void qemu_flush_queued_packets(VLANClientState *vc)
e94667b9 540{
9a6ecb30
MM		 541 NetQueue *queue;
542
543 if (vc->vlan) {
544 queue = vc->vlan->send_queue;
545 } else {
546 queue = vc->send_queue;
547 }
d80b9fc6 548
9a6ecb30 549 qemu_net_queue_flush(queue);
e94667b9
MM		 550}
551
ca77d175
MM		 552static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
553 unsigned flags,
554 const uint8_t *buf, int size,
555 NetPacketSent *sent_cb)
764a4d1d 556{
9a6ecb30 557 NetQueue *queue;
436e5e53 558
63a01ef8 559#ifdef DEBUG_NET
d80b9fc6 560 printf("qemu_send_packet_async:\n");
63a01ef8
AL		 561 hex_dump(stdout, buf, size);
562#endif
f3b6c7fc 563
9a6ecb30
MM		 564 if (sender->link_down || (!sender->peer && !sender->vlan)) {
565 return size;
566 }
567
568 if (sender->peer) {
569 queue = sender->peer->send_queue;
570 } else {
571 queue = sender->vlan->send_queue;
572 }
573
ca77d175
MM		 574 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
575}
576
577ssize_t qemu_send_packet_async(VLANClientState *sender,
578 const uint8_t *buf, int size,
579 NetPacketSent *sent_cb)
580{
581 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
582 buf, size, sent_cb);
f3b6c7fc
MM		 583}
584
585void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
586{
587 qemu_send_packet_async(vc, buf, size, NULL);
63a01ef8
AL		 588}
589
ca77d175
MM		 590ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
591{
592 return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
593 buf, size, NULL);
594}
595
fbe78f4f
AL		 596static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
597 int iovcnt)
598{
599 uint8_t buffer[4096];
600 size_t offset = 0;
601 int i;
602
603 for (i = 0; i < iovcnt; i++) {
604 size_t len;
605
606 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
607 memcpy(buffer + offset, iov[i].iov_base, len);
608 offset += len;
609 }
610
f3b6c7fc 611 return vc->receive(vc, buffer, offset);
fbe78f4f
AL		 612}
613
e0e7877a
AL		 614static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
615{
616 size_t offset = 0;
617 int i;
618
619 for (i = 0; i < iovcnt; i++)
620 offset += iov[i].iov_len;
621 return offset;
622}
623
9a6ecb30 624static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
c0b8e49c 625 unsigned flags,
9a6ecb30
MM		 626 const struct iovec *iov,
627 int iovcnt,
628 void *opaque)
629{
630 VLANClientState *vc = opaque;
631
632 if (vc->link_down) {
633 return calc_iov_length(iov, iovcnt);
634 }
635
636 if (vc->receive_iov) {
637 return vc->receive_iov(vc, iov, iovcnt);
638 } else {
639 return vc_sendv_compat(vc, iov, iovcnt);
640 }
641}
642
f7105843 643static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
c0b8e49c 644 unsigned flags,
f7105843
MM		 645 const struct iovec *iov,
646 int iovcnt,
647 void *opaque)
fbe78f4f 648{
f7105843 649 VLANState *vlan = opaque;
fbe78f4f 650 VLANClientState *vc;
f7105843 651 ssize_t ret = -1;
e94667b9 652
f7105843 653 QTAILQ_FOREACH(vc, &vlan->clients, next) {
e94667b9
MM		 654 ssize_t len;
655
656 if (vc == sender) {
657 continue;
658 }
659
660 if (vc->link_down) {
661 ret = calc_iov_length(iov, iovcnt);
662 continue;
663 }
664
ca77d175
MM		 665 assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
666
e94667b9
MM		 667 if (vc->receive_iov) {
668 len = vc->receive_iov(vc, iov, iovcnt);
669 } else {
670 len = vc_sendv_compat(vc, iov, iovcnt);
671 }
672
673 ret = (ret >= 0) ? ret : len;
674 }
675
e94667b9
MM		 676 return ret;
677}
678
f3b6c7fc
MM		 679ssize_t qemu_sendv_packet_async(VLANClientState *sender,
680 const struct iovec *iov, int iovcnt,
681 NetPacketSent *sent_cb)
e94667b9 682{
9a6ecb30
MM		 683 NetQueue *queue;
684
685 if (sender->link_down || (!sender->peer && !sender->vlan)) {
e94667b9
MM		 686 return calc_iov_length(iov, iovcnt);
687 }
688
9a6ecb30
MM		 689 if (sender->peer) {
690 queue = sender->peer->send_queue;
691 } else {
692 queue = sender->vlan->send_queue;
693 }
694
c0b8e49c
MM		 695 return qemu_net_queue_send_iov(queue, sender,
696 QEMU_NET_PACKET_FLAG_NONE,
697 iov, iovcnt, sent_cb);
fbe78f4f
AL		 698}
699
f3b6c7fc
MM		 700ssize_t
701qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
702{
703 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
704}
705
63a01ef8
AL		 706#if defined(CONFIG_SLIRP)
707
708/* slirp network adapter */
709
c92ef6a2
JK		 710#define SLIRP_CFG_HOSTFWD 1
711#define SLIRP_CFG_LEGACY 2
ad196a9d 712
b8e8af38
JK		 713struct slirp_config_str {
714 struct slirp_config_str *next;
ad196a9d
JK		 715 int flags;
716 char str[1024];
c92ef6a2 717 int legacy_format;
b8e8af38
JK		 718};
719
9f8bd042 720typedef struct SlirpState {
72cf2d4f 721 QTAILQ_ENTRY(SlirpState) entry;
9f8bd042
JK		 722 VLANClientState *vc;
723 Slirp *slirp;
28432466
JK		 724#ifndef _WIN32
725 char smb_dir[128];
726#endif
9f8bd042
JK		 727} SlirpState;
728
ad196a9d
JK		 729static struct slirp_config_str *slirp_configs;
730const char *legacy_tftp_prefix;
731const char *legacy_bootp_filename;
72cf2d4f
BS		 732static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
733 QTAILQ_HEAD_INITIALIZER(slirp_stacks);
63a01ef8 734
fb12577c 735static int slirp_hostfwd(SlirpState *s, const char *redir_str,
0752706d 736 int legacy_format);
fb12577c 737static int slirp_guestfwd(SlirpState *s, const char *config_str,
3c6a0580 738 int legacy_format);
ad196a9d 739
c5b76b38 740#ifndef _WIN32
ad196a9d
JK		 741static const char *legacy_smb_export;
742
fb12577c 743static int slirp_smb(SlirpState *s, const char *exported_dir,
0752706d 744 struct in_addr vserver_addr);
28432466
JK		 745static void slirp_smb_cleanup(SlirpState *s);
746#else
747static inline void slirp_smb_cleanup(SlirpState *s) { }
c5b76b38 748#endif
b8e8af38 749
9f8bd042 750int slirp_can_output(void *opaque)
63a01ef8 751{
9f8bd042
JK		 752 SlirpState *s = opaque;
753
754 return qemu_can_send_packet(s->vc);
63a01ef8
AL		 755}
756
9f8bd042 757void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
63a01ef8 758{
9f8bd042
JK		 759 SlirpState *s = opaque;
760
63a01ef8
AL		 761#ifdef DEBUG_SLIRP
762 printf("slirp output:\n");
763 hex_dump(stdout, pkt, pkt_len);
764#endif
9f8bd042 765 qemu_send_packet(s->vc, pkt, pkt_len);
63a01ef8
AL		 766}
767
4f1c942b 768static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 769{
9f8bd042
JK		 770 SlirpState *s = vc->opaque;
771
63a01ef8
AL		 772#ifdef DEBUG_SLIRP
773 printf("slirp input:\n");
774 hex_dump(stdout, buf, size);
775#endif
9f8bd042 776 slirp_input(s->slirp, buf, size);
4f1c942b 777 return size;
63a01ef8
AL		 778}
779
8d6249a7
AL		 780static void net_slirp_cleanup(VLANClientState *vc)
781{
ad0d8c4c
JK		 782 SlirpState *s = vc->opaque;
783
784 slirp_cleanup(s->slirp);
28432466 785 slirp_smb_cleanup(s);
72cf2d4f 786 QTAILQ_REMOVE(&slirp_stacks, s, entry);
ad0d8c4c 787 qemu_free(s);
8d6249a7
AL		 788}
789
fb12577c 790static int net_slirp_init(VLANState *vlan, const char *model,
c92ef6a2
JK		 791 const char *name, int restricted,
792 const char *vnetwork, const char *vhost,
793 const char *vhostname, const char *tftp_export,
794 const char *bootfile, const char *vdhcp_start,
795 const char *vnameserver, const char *smb_export,
796 const char *vsmbserver)
63a01ef8 797{
ad0d8c4c 798 /* default settings according to historic slirp */
8389e7f4
AL		 799 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
800 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
ad0d8c4c
JK		 801 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
802 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
803 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
c92ef6a2 804#ifndef _WIN32
ad0d8c4c 805 struct in_addr smbsrv = { .s_addr = 0 };
c92ef6a2 806#endif
ad0d8c4c
JK		 807 SlirpState *s;
808 char buf[20];
809 uint32_t addr;
810 int shift;
811 char *end;
3a179c66 812 struct slirp_config_str *config;
ad0d8c4c
JK		 813
814 if (!tftp_export) {
815 tftp_export = legacy_tftp_prefix;
816 }
817 if (!bootfile) {
818 bootfile = legacy_bootp_filename;
819 }
c92ef6a2 820
ad0d8c4c
JK		 821 if (vnetwork) {
822 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
823 if (!inet_aton(vnetwork, &net)) {
824 return -1;
825 }
826 addr = ntohl(net.s_addr);
827 if (!(addr & 0x80000000)) {
828 mask.s_addr = htonl(0xff000000); /* class A */
829 } else if ((addr & 0xfff00000) == 0xac100000) {
830 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
831 } else if ((addr & 0xc0000000) == 0x80000000) {
832 mask.s_addr = htonl(0xffff0000); /* class B */
833 } else if ((addr & 0xffff0000) == 0xc0a80000) {
834 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
835 } else if ((addr & 0xffff0000) == 0xc6120000) {
836 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
837 } else if ((addr & 0xe0000000) == 0xe0000000) {
838 mask.s_addr = htonl(0xffffff00); /* class C */
c92ef6a2 839 } else {
ad0d8c4c
JK		 840 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
841 }
842 } else {
843 if (!inet_aton(buf, &net)) {
844 return -1;
845 }
846 shift = strtol(vnetwork, &end, 10);
847 if (*end != '\0') {
848 if (!inet_aton(vnetwork, &mask)) {
c92ef6a2 849 return -1;
c92ef6a2 850 }
ad0d8c4c
JK		 851 } else if (shift < 4 || shift > 32) {
852 return -1;
853 } else {
854 mask.s_addr = htonl(0xffffffff << (32 - shift));
c92ef6a2 855 }
c92ef6a2 856 }
ad0d8c4c
JK		 857 net.s_addr &= mask.s_addr;
858 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
859 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
860 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
861 }
c92ef6a2 862
ad0d8c4c
JK		 863 if (vhost && !inet_aton(vhost, &host)) {
864 return -1;
865 }
866 if ((host.s_addr & mask.s_addr) != net.s_addr) {
867 return -1;
868 }
c92ef6a2 869
ad0d8c4c
JK		 870 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
871 return -1;
872 }
873 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
874 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
875 return -1;
876 }
c92ef6a2 877
ad0d8c4c
JK		 878 if (vnameserver && !inet_aton(vnameserver, &dns)) {
879 return -1;
880 }
881 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
882 dns.s_addr == host.s_addr) {
883 return -1;
884 }
c92ef6a2
JK		 885
886#ifndef _WIN32
ad0d8c4c
JK		 887 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
888 return -1;
889 }
c92ef6a2
JK		 890#endif
891
ad0d8c4c
JK		 892 s = qemu_mallocz(sizeof(SlirpState));
893 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
894 tftp_export, bootfile, dhcp, dns, s);
72cf2d4f 895 QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
b8e8af38 896
3a179c66 897 for (config = slirp_configs; config; config = config->next) {
ad0d8c4c 898 if (config->flags & SLIRP_CFG_HOSTFWD) {
fb12577c 899 if (slirp_hostfwd(s, config->str,
0752706d
MA		 900 config->flags & SLIRP_CFG_LEGACY) < 0)
901 return -1;
ad0d8c4c 902 } else {
fb12577c 903 if (slirp_guestfwd(s, config->str,
0752706d
MA		 904 config->flags & SLIRP_CFG_LEGACY) < 0)
905 return -1;
b8e8af38 906 }
ad0d8c4c 907 }
b8e8af38 908#ifndef _WIN32
ad0d8c4c
JK		 909 if (!smb_export) {
910 smb_export = legacy_smb_export;
911 }
912 if (smb_export) {
fb12577c 913 if (slirp_smb(s, smb_export, smbsrv) < 0)
0752706d 914 return -1;
63a01ef8 915 }
ad0d8c4c 916#endif
b8e8af38 917
bb6e6364
MM		 918 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SLIRP,
919 vlan, NULL, model, name, NULL,
70783b9c 920 slirp_receive, NULL, NULL,
9f8bd042 921 net_slirp_cleanup, s);
fc57bc57
JK		 922 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
923 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
63a01ef8
AL		 924 return 0;
925}
926
f13b572c
JK		 927static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
928 const char *stack)
929{
930 VLANClientState *vc;
931
932 if (vlan) {
933 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
934 if (!vc) {
935 return NULL;
936 }
937 if (strcmp(vc->model, "user")) {
938 monitor_printf(mon, "invalid device specified\n");
939 return NULL;
940 }
941 return vc->opaque;
942 } else {
72cf2d4f 943 if (QTAILQ_EMPTY(&slirp_stacks)) {
f13b572c
JK		 944 monitor_printf(mon, "user mode network stack not in use\n");
945 return NULL;
946 }
72cf2d4f 947 return QTAILQ_FIRST(&slirp_stacks);
f13b572c
JK		 948 }
949}
950
1d4daa91 951void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
c1261d8d 952{
3c6a0580 953 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c1261d8d
AG		 954 int host_port;
955 char buf[256] = "";
f13b572c
JK		 956 const char *src_str, *p;
957 SlirpState *s;
c1261d8d 958 int is_udp = 0;
9c12a6f2 959 int err;
1d4daa91
LC		 960 const char *arg1 = qdict_get_str(qdict, "arg1");
961 const char *arg2 = qdict_get_try_str(qdict, "arg2");
962 const char *arg3 = qdict_get_try_str(qdict, "arg3");
c1261d8d 963
f13b572c
JK		 964 if (arg2) {
965 s = slirp_lookup(mon, arg1, arg2);
966 src_str = arg3;
967 } else {
968 s = slirp_lookup(mon, NULL, NULL);
969 src_str = arg1;
970 }
971 if (!s) {
c1261d8d 972 return;
f3546deb 973 }
c1261d8d 974
3c6a0580 975 if (!src_str || !src_str[0])
c1261d8d
AG		 976 goto fail_syntax;
977
f13b572c 978 p = src_str;
c1261d8d
AG		 979 get_str_sep(buf, sizeof(buf), &p, ':');
980
981 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
982 is_udp = 0;
983 } else if (!strcmp(buf, "udp")) {
984 is_udp = 1;
985 } else {
986 goto fail_syntax;
987 }
988
3c6a0580
JK		 989 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
990 goto fail_syntax;
991 }
992 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
993 goto fail_syntax;
994 }
995
c1261d8d
AG		 996 host_port = atoi(p);
997
72cf2d4f 998 err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
9f8bd042 999 host_addr, host_port);
c1261d8d 1000
9c12a6f2
JK		 1001 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
1002 err ? "removed" : "not found");
c1261d8d
AG		 1003 return;
1004
1005 fail_syntax:
1006 monitor_printf(mon, "invalid format\n");
1007}
1008
fb12577c 1009static int slirp_hostfwd(SlirpState *s, const char *redir_str,
0752706d 1010 int legacy_format)
63a01ef8 1011{
3c6a0580 1012 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c92ef6a2 1013 struct in_addr guest_addr = { .s_addr = 0 };
63a01ef8 1014 int host_port, guest_port;
b8e8af38 1015 const char *p;
c92ef6a2 1016 char buf[256];
b8e8af38 1017 int is_udp;
c92ef6a2 1018 char *end;
1c6ed9f3 1019
63a01ef8 1020 p = redir_str;
f13b572c 1021 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 1022 goto fail_syntax;
b8e8af38 1023 }
d4ebe193 1024 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
63a01ef8
AL		 1025 is_udp = 0;
1026 } else if (!strcmp(buf, "udp")) {
1027 is_udp = 1;
1028 } else {
d4ebe193 1029 goto fail_syntax;
63a01ef8
AL		 1030 }
1031
3c6a0580
JK		 1032 if (!legacy_format) {
1033 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1034 goto fail_syntax;
1035 }
1036 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
1037 goto fail_syntax;
1038 }
1039 }
1040
1041 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
d4ebe193 1042 goto fail_syntax;
b8e8af38 1043 }
c92ef6a2
JK		 1044 host_port = strtol(buf, &end, 0);
1045 if (*end != '\0' || host_port < 1 || host_port > 65535) {
d4ebe193 1046 goto fail_syntax;
b8e8af38 1047 }
63a01ef8 1048
b8e8af38 1049 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 1050 goto fail_syntax;
b8e8af38 1051 }
c92ef6a2 1052 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
d4ebe193 1053 goto fail_syntax;
b8e8af38 1054 }
63a01ef8 1055
c92ef6a2
JK		 1056 guest_port = strtol(p, &end, 0);
1057 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
d4ebe193 1058 goto fail_syntax;
b8e8af38 1059 }
63a01ef8 1060
9f8bd042
JK		 1061 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1062 guest_port) < 0) {
fb12577c
MA		 1063 qemu_error("could not set up host forwarding rule '%s'\n",
1064 redir_str);
0752706d 1065 return -1;
63a01ef8 1066 }
0752706d 1067 return 0;
d4ebe193
AL		 1068
1069 fail_syntax:
fb12577c 1070 qemu_error("invalid host forwarding rule '%s'\n", redir_str);
0752706d 1071 return -1;
63a01ef8
AL		 1072}
1073
1d4daa91 1074void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
b8e8af38 1075{
f13b572c
JK		 1076 const char *redir_str;
1077 SlirpState *s;
1d4daa91
LC		 1078 const char *arg1 = qdict_get_str(qdict, "arg1");
1079 const char *arg2 = qdict_get_try_str(qdict, "arg2");
1080 const char *arg3 = qdict_get_try_str(qdict, "arg3");
f13b572c
JK		 1081
1082 if (arg2) {
1083 s = slirp_lookup(mon, arg1, arg2);
1084 redir_str = arg3;
1085 } else {
1086 s = slirp_lookup(mon, NULL, NULL);
1087 redir_str = arg1;
1088 }
1089 if (s) {
fb12577c 1090 slirp_hostfwd(s, redir_str, 0);
b8e8af38
JK		 1091 }
1092
f3546deb
JK		 1093}
1094
0752706d 1095int net_slirp_redir(const char *redir_str)
f3546deb
JK		 1096{
1097 struct slirp_config_str *config;
1098
72cf2d4f 1099 if (QTAILQ_EMPTY(&slirp_stacks)) {
f3546deb
JK		 1100 config = qemu_malloc(sizeof(*config));
1101 pstrcpy(config->str, sizeof(config->str), redir_str);
3c6a0580 1102 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
f3546deb
JK		 1103 config->next = slirp_configs;
1104 slirp_configs = config;
0752706d 1105 return 0;
b8e8af38
JK		 1106 }
1107
fb12577c 1108 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
b8e8af38
JK		 1109}
1110
63a01ef8
AL		 1111#ifndef _WIN32
1112
63a01ef8 1113/* automatic user mode samba server configuration */
28432466 1114static void slirp_smb_cleanup(SlirpState *s)
63a01ef8 1115{
28432466 1116 char cmd[128];
09c18925 1117
28432466
JK		 1118 if (s->smb_dir[0] != '\0') {
1119 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1120 system(cmd);
1121 s->smb_dir[0] = '\0';
1122 }
63a01ef8
AL		 1123}
1124
fb12577c 1125static int slirp_smb(SlirpState* s, const char *exported_dir,
0752706d 1126 struct in_addr vserver_addr)
63a01ef8 1127{
28432466
JK		 1128 static int instance;
1129 char smb_conf[128];
1130 char smb_cmdline[128];
63a01ef8
AL		 1131 FILE *f;
1132
28432466
JK		 1133 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1134 (long)getpid(), instance++);
1135 if (mkdir(s->smb_dir, 0700) < 0) {
fb12577c 1136 qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
0752706d 1137 return -1;
63a01ef8 1138 }
28432466 1139 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
63a01ef8
AL		 1140
1141 f = fopen(smb_conf, "w");
1142 if (!f) {
28432466 1143 slirp_smb_cleanup(s);
fb12577c
MA		 1144 qemu_error("could not create samba server configuration file '%s'\n",
1145 smb_conf);
0752706d 1146 return -1;
63a01ef8
AL		 1147 }
1148 fprintf(f,
1149 "[global]\n"
1150 "private dir=%s\n"
1151 "smb ports=0\n"
1152 "socket address=127.0.0.1\n"
1153 "pid directory=%s\n"
1154 "lock directory=%s\n"
1155 "log file=%s/log.smbd\n"
1156 "smb passwd file=%s/smbpasswd\n"
1157 "security = share\n"
1158 "[qemu]\n"
1159 "path=%s\n"
1160 "read only=no\n"
1161 "guest ok=yes\n",
28432466
JK		 1162 s->smb_dir,
1163 s->smb_dir,
1164 s->smb_dir,
1165 s->smb_dir,
1166 s->smb_dir,
63a01ef8
AL		 1167 exported_dir
1168 );
1169 fclose(f);
63a01ef8
AL		 1170
1171 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1172 SMBD_COMMAND, smb_conf);
1173
bb53fc53 1174 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
28432466 1175 slirp_smb_cleanup(s);
fb12577c 1176 qemu_error("conflicting/invalid smbserver address\n");
0752706d 1177 return -1;
c92ef6a2 1178 }
0752706d 1179 return 0;
63a01ef8
AL		 1180}
1181
ad196a9d 1182/* automatic user mode samba server configuration (legacy interface) */
0752706d 1183int net_slirp_smb(const char *exported_dir)
b8e8af38 1184{
c92ef6a2
JK		 1185 struct in_addr vserver_addr = { .s_addr = 0 };
1186
ad196a9d 1187 if (legacy_smb_export) {
b8e8af38 1188 fprintf(stderr, "-smb given twice\n");
0752706d 1189 return -1;
b8e8af38 1190 }
ad196a9d 1191 legacy_smb_export = exported_dir;
72cf2d4f 1192 if (!QTAILQ_EMPTY(&slirp_stacks)) {
fb12577c 1193 return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
0752706d 1194 vserver_addr);
b8e8af38 1195 }
0752706d 1196 return 0;
b8e8af38
JK		 1197}
1198
63a01ef8 1199#endif /* !defined(_WIN32) */
b8e8af38 1200
c92ef6a2 1201struct GuestFwd {
8ca9217d 1202 CharDriverState *hd;
c92ef6a2 1203 struct in_addr server;
8ca9217d 1204 int port;
9f8bd042 1205 Slirp *slirp;
511d2b14 1206};
8ca9217d 1207
c92ef6a2 1208static int guestfwd_can_read(void *opaque)
8ca9217d 1209{
c92ef6a2 1210 struct GuestFwd *fwd = opaque;
9f8bd042 1211 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
8ca9217d
AL		 1212}
1213
c92ef6a2 1214static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
8ca9217d 1215{
c92ef6a2 1216 struct GuestFwd *fwd = opaque;
9f8bd042 1217 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
8ca9217d
AL		 1218}
1219
fb12577c 1220static int slirp_guestfwd(SlirpState *s, const char *config_str,
0752706d 1221 int legacy_format)
ad196a9d 1222{
c92ef6a2
JK		 1223 struct in_addr server = { .s_addr = 0 };
1224 struct GuestFwd *fwd;
1225 const char *p;
1226 char buf[128];
1227 char *end;
ad196a9d
JK		 1228 int port;
1229
c92ef6a2
JK		 1230 p = config_str;
1231 if (legacy_format) {
1232 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1233 goto fail_syntax;
1234 }
1235 } else {
1236 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1237 goto fail_syntax;
1238 }
1239 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1240 goto fail_syntax;
1241 }
1242 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1243 goto fail_syntax;
1244 }
1245 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1246 goto fail_syntax;
1247 }
1248 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1249 goto fail_syntax;
1250 }
1251 }
1252 port = strtol(buf, &end, 10);
1253 if (*end != '\0' || port < 1 || port > 65535) {
1254 goto fail_syntax;
ad196a9d 1255 }
ad196a9d 1256
c92ef6a2
JK		 1257 fwd = qemu_malloc(sizeof(struct GuestFwd));
1258 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1259 fwd->hd = qemu_chr_open(buf, p, NULL);
1260 if (!fwd->hd) {
fb12577c 1261 qemu_error("could not open guest forwarding device '%s'\n", buf);
c92ef6a2 1262 qemu_free(fwd);
0752706d 1263 return -1;
ad196a9d 1264 }
ad196a9d 1265
bb53fc53 1266 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
fb12577c
MA		 1267 qemu_error("conflicting/invalid host:port in guest forwarding "
1268 "rule '%s'\n", config_str);
c92ef6a2 1269 qemu_free(fwd);
0752706d 1270 return -1;
c92ef6a2 1271 }
bb53fc53
JK		 1272 fwd->server = server;
1273 fwd->port = port;
1274 fwd->slirp = s->slirp;
1275
c92ef6a2
JK		 1276 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1277 NULL, fwd);
0752706d 1278 return 0;
c92ef6a2
JK		 1279
1280 fail_syntax:
fb12577c 1281 qemu_error("invalid guest forwarding rule '%s'\n", config_str);
0752706d 1282 return -1;
ad196a9d
JK		 1283}
1284
6dbe553f
JK		 1285void do_info_usernet(Monitor *mon)
1286{
b1c99fcd 1287 SlirpState *s;
9f8bd042 1288
72cf2d4f 1289 QTAILQ_FOREACH(s, &slirp_stacks, entry) {
b1c99fcd
JK		 1290 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1291 slirp_connection_info(s->slirp, mon);
9f8bd042 1292 }
6dbe553f
JK		 1293}
1294
63a01ef8
AL		 1295#endif /* CONFIG_SLIRP */
1296
24e32363
MM		 1297#if defined(_WIN32)
1298int tap_has_vnet_hdr(VLANClientState *vc)
1299{
1300 return 0;
1301}
1302void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr)
1303{
1304}
1305#else /* !defined(_WIN32) */
63a01ef8 1306
8e0f8e5b
MM		 1307/* Maximum GSO packet size (64k) plus plenty of room for
1308 * the ethernet and virtio_net headers
1309 */
1310#define TAP_BUFSIZE (4096 + 65536)
1311
63a01ef8
AL		 1312typedef struct TAPState {
1313 VLANClientState *vc;
1314 int fd;
1315 char down_script[1024];
973cbd37 1316 char down_script_arg[128];
8e0f8e5b 1317 uint8_t buf[TAP_BUFSIZE];
b664e367 1318 unsigned int read_poll : 1;
1f7babf6 1319 unsigned int write_poll : 1;
8e0f8e5b 1320 unsigned int has_vnet_hdr : 1;
24e32363 1321 unsigned int using_vnet_hdr : 1;
63a01ef8
AL		 1322} TAPState;
1323
b946a153
AL		 1324static int launch_script(const char *setup_script, const char *ifname, int fd);
1325
b664e367
MM		 1326static int tap_can_send(void *opaque);
1327static void tap_send(void *opaque);
1f7babf6 1328static void tap_writable(void *opaque);
b664e367
MM		 1329
1330static void tap_update_fd_handler(TAPState *s)
1331{
1332 qemu_set_fd_handler2(s->fd,
1333 s->read_poll ? tap_can_send : NULL,
1334 s->read_poll ? tap_send : NULL,
1f7babf6 1335 s->write_poll ? tap_writable : NULL,
b664e367
MM		 1336 s);
1337}
1338
1339static void tap_read_poll(TAPState *s, int enable)
1340{
1341 s->read_poll = !!enable;
1342 tap_update_fd_handler(s);
1343}
1344
1f7babf6
MM		 1345static void tap_write_poll(TAPState *s, int enable)
1346{
1347 s->write_poll = !!enable;
1348 tap_update_fd_handler(s);
1349}
1350
1351static void tap_writable(void *opaque)
1352{
1353 TAPState *s = opaque;
1354
1355 tap_write_poll(s, 0);
1356
1357 qemu_flush_queued_packets(s->vc);
1358}
1359
38c75be3 1360static ssize_t tap_write_packet(TAPState *s, const struct iovec *iov, int iovcnt)
b535b7b2 1361{
b535b7b2
AL		 1362 ssize_t len;
1363
1364 do {
1365 len = writev(s->fd, iov, iovcnt);
1f7babf6
MM		 1366 } while (len == -1 && errno == EINTR);
1367
1368 if (len == -1 && errno == EAGAIN) {
1369 tap_write_poll(s, 1);
1370 return 0;
1371 }
b535b7b2
AL		 1372
1373 return len;
1374}
b535b7b2 1375
38c75be3
MM		 1376static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1377 int iovcnt)
1378{
1379 TAPState *s = vc->opaque;
8e0f8e5b
MM		 1380 const struct iovec *iovp = iov;
1381 struct iovec iov_copy[iovcnt + 1];
1382 struct virtio_net_hdr hdr = { 0, };
38c75be3 1383
24e32363 1384 if (s->has_vnet_hdr && !s->using_vnet_hdr) {
8e0f8e5b
MM		 1385 iov_copy[0].iov_base = &hdr;
1386 iov_copy[0].iov_len = sizeof(hdr);
1387 memcpy(&iov_copy[1], iov, iovcnt * sizeof(*iov));
1388 iovp = iov_copy;
1389 iovcnt++;
1390 }
1391
1392 return tap_write_packet(s, iovp, iovcnt);
38c75be3
MM		 1393}
1394
4f1c942b 1395static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1396{
e3f5ec2b 1397 TAPState *s = vc->opaque;
8e0f8e5b 1398 struct iovec iov[2];
38c75be3 1399 int iovcnt = 0;
8e0f8e5b
MM		 1400 struct virtio_net_hdr hdr = { 0, };
1401
24e32363 1402 if (s->has_vnet_hdr && !s->using_vnet_hdr) {
8e0f8e5b
MM		 1403 iov[iovcnt].iov_base = &hdr;
1404 iov[iovcnt].iov_len = sizeof(hdr);
1405 iovcnt++;
1406 }
4f1c942b 1407
38c75be3
MM		 1408 iov[iovcnt].iov_base = (char *)buf;
1409 iov[iovcnt].iov_len = size;
1410 iovcnt++;
4f1c942b 1411
38c75be3 1412 return tap_write_packet(s, iov, iovcnt);
63a01ef8
AL		 1413}
1414
3471b757
MM		 1415static int tap_can_send(void *opaque)
1416{
1417 TAPState *s = opaque;
1418
1419 return qemu_can_send_packet(s->vc);
1420}
1421
63a01ef8 1422#ifdef __sun__
5a6d8815
MM		 1423static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1424{
63a01ef8
AL		 1425 struct strbuf sbuf;
1426 int f = 0;
5a6d8815
MM		 1427
1428 sbuf.maxlen = maxlen;
3f4cb3d3 1429 sbuf.buf = (char *)buf;
5a6d8815
MM		 1430
1431 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1432}
63a01ef8 1433#else
5a6d8815
MM		 1434static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1435{
1436 return read(tapfd, buf, maxlen);
1437}
63a01ef8 1438#endif
5a6d8815 1439
783527a9 1440static void tap_send_completed(VLANClientState *vc, ssize_t len)
e19eb224
MM		 1441{
1442 TAPState *s = vc->opaque;
b664e367 1443 tap_read_poll(s, 1);
e19eb224
MM		 1444}
1445
5a6d8815
MM		 1446static void tap_send(void *opaque)
1447{
1448 TAPState *s = opaque;
5a6d8815
MM		 1449 int size;
1450
e19eb224 1451 do {
8e0f8e5b
MM		 1452 uint8_t *buf = s->buf;
1453
e19eb224
MM		 1454 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1455 if (size <= 0) {
1456 break;
1457 }
1458
24e32363 1459 if (s->has_vnet_hdr && !s->using_vnet_hdr) {
8e0f8e5b
MM		 1460 buf += sizeof(struct virtio_net_hdr);
1461 size -= sizeof(struct virtio_net_hdr);
1462 }
1463
1464 size = qemu_send_packet_async(s->vc, buf, size, tap_send_completed);
e19eb224 1465 if (size == 0) {
b664e367 1466 tap_read_poll(s, 0);
e19eb224
MM		 1467 }
1468 } while (size > 0);
63a01ef8
AL		 1469}
1470
fc5b81d1
MM		 1471/* sndbuf should be set to a value lower than the tx queue
1472 * capacity of any destination network interface.
1473 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1474 * a good default, given a 1500 byte MTU.
1475 */
1476#define TAP_DEFAULT_SNDBUF 1024*1024
1477
8a1c5235 1478static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
fc5b81d1 1479{
8a1c5235 1480 int sndbuf;
fc5b81d1 1481
8a1c5235 1482 sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF);
fc5b81d1
MM		 1483 if (!sndbuf) {
1484 sndbuf = INT_MAX;
1485 }
1486
8a1c5235 1487 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) {
fb12577c 1488 qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno));
0752706d 1489 return -1;
0df0ff6d 1490 }
0752706d 1491 return 0;
fc5b81d1 1492}
0df0ff6d 1493
24e32363
MM		 1494int tap_has_vnet_hdr(VLANClientState *vc)
1495{
1496 TAPState *s = vc->opaque;
1497
1498 assert(vc->type == NET_CLIENT_TYPE_TAP);
1499
1500 return s->has_vnet_hdr;
1501}
1502
1503void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr)
1504{
1505 TAPState *s = vc->opaque;
1506
1507 using_vnet_hdr = using_vnet_hdr != 0;
1508
1509 assert(vc->type == NET_CLIENT_TYPE_TAP);
1510 assert(s->has_vnet_hdr == using_vnet_hdr);
1511
1512 s->using_vnet_hdr = using_vnet_hdr;
1513}
1514
8e0f8e5b
MM		 1515static int tap_probe_vnet_hdr(int fd)
1516{
1517 struct ifreq ifr;
1518
1519 if (ioctl(fd, TUNGETIFF, &ifr) != 0) {
1520 qemu_error("TUNGETIFF ioctl() failed: %s\n", strerror(errno));
1521 return 0;
1522 }
1523
1524 return ifr.ifr_flags & IFF_VNET_HDR;
1525}
1526
b946a153
AL		 1527static void tap_cleanup(VLANClientState *vc)
1528{
1529 TAPState *s = vc->opaque;
1530
b9adce2c
MM		 1531 qemu_purge_queued_packets(vc);
1532
b946a153
AL		 1533 if (s->down_script[0])
1534 launch_script(s->down_script, s->down_script_arg, s->fd);
1535
b664e367 1536 tap_read_poll(s, 0);
1f7babf6 1537 tap_write_poll(s, 0);
b946a153
AL		 1538 close(s->fd);
1539 qemu_free(s);
1540}
1541
63a01ef8
AL		 1542/* fd support */
1543
7a9f6e4a
AL		 1544static TAPState *net_tap_fd_init(VLANState *vlan,
1545 const char *model,
1546 const char *name,
8e0f8e5b
MM		 1547 int fd,
1548 int vnet_hdr)
63a01ef8
AL		 1549{
1550 TAPState *s;
1551
1552 s = qemu_mallocz(sizeof(TAPState));
63a01ef8 1553 s->fd = fd;
8e0f8e5b 1554 s->has_vnet_hdr = vnet_hdr != 0;
24e32363 1555 s->using_vnet_hdr = 0;
bb6e6364
MM		 1556 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_TAP,
1557 vlan, NULL, model, name, NULL,
70783b9c 1558 tap_receive, NULL, tap_receive_iov,
283c7c63 1559 tap_cleanup, s);
b664e367 1560 tap_read_poll(s, 1);
63a01ef8
AL		 1561 return s;
1562}
1563
71e72a19 1564#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
baf74c95
MM		 1565static int tap_open(char *ifname, int ifname_size,
1566 int *vnet_hdr, int vnet_hdr_required)
63a01ef8
AL		 1567{
1568 int fd;
1569 char *dev;
1570 struct stat s;
1571
1572 TFR(fd = open("/dev/tap", O_RDWR));
1573 if (fd < 0) {
1574 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1575 return -1;
1576 }
1577
1578 fstat(fd, &s);
1579 dev = devname(s.st_rdev, S_IFCHR);
1580 pstrcpy(ifname, ifname_size, dev);
1581
1582 fcntl(fd, F_SETFL, O_NONBLOCK);
1583 return fd;
1584}
1585#elif defined(__sun__)
1586#define TUNNEWPPA (('T'<<16) | 0x0001)
1587/*
1588 * Allocate TAP device, returns opened fd.
1589 * Stores dev name in the first arg(must be large enough).
1590 */
3f4cb3d3 1591static int tap_alloc(char *dev, size_t dev_size)
63a01ef8
AL		 1592{
1593 int tap_fd, if_fd, ppa = -1;
1594 static int ip_fd = 0;
1595 char *ptr;
1596
1597 static int arp_fd = 0;
1598 int ip_muxid, arp_muxid;
1599 struct strioctl strioc_if, strioc_ppa;
1600 int link_type = I_PLINK;;
1601 struct lifreq ifr;
1602 char actual_name[32] = "";
1603
1604 memset(&ifr, 0x0, sizeof(ifr));
1605
1606 if( *dev ){
1607 ptr = dev;
47398b9c 1608 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
63a01ef8
AL		 1609 ppa = atoi(ptr);
1610 }
1611
1612 /* Check if IP device was opened */
1613 if( ip_fd )
1614 close(ip_fd);
1615
1616 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1617 if (ip_fd < 0) {
1618 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1619 return -1;
1620 }
1621
1622 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1623 if (tap_fd < 0) {
1624 syslog(LOG_ERR, "Can't open /dev/tap");
1625 return -1;
1626 }
1627
1628 /* Assign a new PPA and get its unit number. */
1629 strioc_ppa.ic_cmd = TUNNEWPPA;
1630 strioc_ppa.ic_timout = 0;
1631 strioc_ppa.ic_len = sizeof(ppa);
1632 strioc_ppa.ic_dp = (char *)&ppa;
1633 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1634 syslog (LOG_ERR, "Can't assign new interface");
1635
1636 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1637 if (if_fd < 0) {
1638 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1639 return -1;
1640 }
1641 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1642 syslog(LOG_ERR, "Can't push IP module");
1643 return -1;
1644 }
1645
1646 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1647 syslog(LOG_ERR, "Can't get flags\n");
1648
1649 snprintf (actual_name, 32, "tap%d", ppa);
1650 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1651
1652 ifr.lifr_ppa = ppa;
1653 /* Assign ppa according to the unit number returned by tun device */
1654
1655 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1656 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1657 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1658 syslog (LOG_ERR, "Can't get flags\n");
1659 /* Push arp module to if_fd */
1660 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1661 syslog (LOG_ERR, "Can't push ARP module (2)");
1662
1663 /* Push arp module to ip_fd */
1664 if (ioctl (ip_fd, I_POP, NULL) < 0)
1665 syslog (LOG_ERR, "I_POP failed\n");
1666 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1667 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1668 /* Open arp_fd */
1669 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1670 if (arp_fd < 0)
1671 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1672
1673 /* Set ifname to arp */
1674 strioc_if.ic_cmd = SIOCSLIFNAME;
1675 strioc_if.ic_timout = 0;
1676 strioc_if.ic_len = sizeof(ifr);
1677 strioc_if.ic_dp = (char *)&ifr;
1678 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1679 syslog (LOG_ERR, "Can't set ifname to arp\n");
1680 }
1681
1682 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1683 syslog(LOG_ERR, "Can't link TAP device to IP");
1684 return -1;
1685 }
1686
1687 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1688 syslog (LOG_ERR, "Can't link TAP device to ARP");
1689
1690 close (if_fd);
1691
1692 memset(&ifr, 0x0, sizeof(ifr));
1693 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1694 ifr.lifr_ip_muxid = ip_muxid;
1695 ifr.lifr_arp_muxid = arp_muxid;
1696
1697 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1698 {
1699 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1700 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1701 syslog (LOG_ERR, "Can't set multiplexor id");
1702 }
1703
1704 snprintf(dev, dev_size, "tap%d", ppa);
1705 return tap_fd;
1706}
1707
baf74c95
MM		 1708static int tap_open(char *ifname, int ifname_size,
1709 int *vnet_hdr, int vnet_hdr_required)
63a01ef8
AL		 1710{
1711 char dev[10]="";
1712 int fd;
1713 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1714 fprintf(stderr, "Cannot allocate TAP device\n");
1715 return -1;
1716 }
1717 pstrcpy(ifname, ifname_size, dev);
1718 fcntl(fd, F_SETFL, O_NONBLOCK);
1719 return fd;
1720}
b29fe3ed 1721#elif defined (_AIX)
baf74c95
MM		 1722static int tap_open(char *ifname, int ifname_size,
1723 int *vnet_hdr, int vnet_hdr_required)
b29fe3ed 1724{
1725 fprintf (stderr, "no tap on AIX\n");
1726 return -1;
1727}
63a01ef8 1728#else
baf74c95
MM		 1729static int tap_open(char *ifname, int ifname_size,
1730 int *vnet_hdr, int vnet_hdr_required)
63a01ef8
AL		 1731{
1732 struct ifreq ifr;
1733 int fd, ret;
1734
1735 TFR(fd = open("/dev/net/tun", O_RDWR));
1736 if (fd < 0) {
1737 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1738 return -1;
1739 }
1740 memset(&ifr, 0, sizeof(ifr));
1741 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
8e0f8e5b 1742
baf74c95 1743 if (*vnet_hdr) {
8e0f8e5b
MM		 1744 unsigned int features;
1745
1746 if (ioctl(fd, TUNGETFEATURES, &features) == 0 &&
1747 features & IFF_VNET_HDR) {
1748 *vnet_hdr = 1;
1749 ifr.ifr_flags |= IFF_VNET_HDR;
1750 }
baf74c95
MM		 1751
1752 if (vnet_hdr_required && !*vnet_hdr) {
1753 qemu_error("vnet_hdr=1 requested, but no kernel "
1754 "support for IFF_VNET_HDR available");
1755 close(fd);
1756 return -1;
1757 }
8e0f8e5b
MM		 1758 }
1759
63a01ef8
AL		 1760 if (ifname[0] != '\0')
1761 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1762 else
1763 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1764 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1765 if (ret != 0) {
1766 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1767 close(fd);
1768 return -1;
1769 }
1770 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1771 fcntl(fd, F_SETFL, O_NONBLOCK);
1772 return fd;
1773}
1774#endif
1775
1776static int launch_script(const char *setup_script, const char *ifname, int fd)
1777{
7c3370d4 1778 sigset_t oldmask, mask;
63a01ef8
AL		 1779 int pid, status;
1780 char *args[3];
1781 char **parg;
1782
7c3370d4
JK		 1783 sigemptyset(&mask);
1784 sigaddset(&mask, SIGCHLD);
1785 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1786
1787 /* try to launch network script */
1788 pid = fork();
1789 if (pid == 0) {
1790 int open_max = sysconf(_SC_OPEN_MAX), i;
1791
1792 for (i = 0; i < open_max; i++) {
1793 if (i != STDIN_FILENO &&
1794 i != STDOUT_FILENO &&
1795 i != STDERR_FILENO &&
1796 i != fd) {
1797 close(i);
63a01ef8
AL		 1798 }
1799 }
7c3370d4
JK		 1800 parg = args;
1801 *parg++ = (char *)setup_script;
1802 *parg++ = (char *)ifname;
1803 *parg++ = NULL;
1804 execv(setup_script, args);
1805 _exit(1);
1806 } else if (pid > 0) {
1807 while (waitpid(pid, &status, 0) != pid) {
1808 /* loop */
1809 }
1810 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1811
1812 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1813 return 0;
1814 }
1815 }
1816 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1817 return -1;
63a01ef8
AL		 1818}
1819
424a7f96 1820static int net_tap_init(QemuOpts *opts, int *vnet_hdr)
63a01ef8 1821{
baf74c95 1822 int fd, vnet_hdr_required;
424a7f96
MM		 1823 char ifname[128] = {0,};
1824 const char *setup_script;
63a01ef8 1825
424a7f96
MM		 1826 if (qemu_opt_get(opts, "ifname")) {
1827 pstrcpy(ifname, sizeof(ifname), qemu_opt_get(opts, "ifname"));
1828 }
63a01ef8 1829
baf74c95
MM		 1830 *vnet_hdr = qemu_opt_get_bool(opts, "vnet_hdr", 1);
1831 if (qemu_opt_get(opts, "vnet_hdr")) {
1832 vnet_hdr_required = *vnet_hdr;
1833 } else {
1834 vnet_hdr_required = 0;
1835 }
1836
1837 TFR(fd = tap_open(ifname, sizeof(ifname), vnet_hdr, vnet_hdr_required));
424a7f96
MM		 1838 if (fd < 0) {
1839 return -1;
63a01ef8 1840 }
424a7f96
MM		 1841
1842 setup_script = qemu_opt_get(opts, "script");
1843 if (setup_script &&
1844 setup_script[0] != '\0' &&
1845 strcmp(setup_script, "no") != 0 &&
1846 launch_script(setup_script, ifname, fd)) {
1847 close(fd);
1848 return -1;
973cbd37 1849 }
424a7f96
MM		 1850
1851 qemu_opt_set(opts, "ifname", ifname);
1852
1853 return fd;
63a01ef8
AL		 1854}
1855
1856#endif /* !_WIN32 */
1857
1858#if defined(CONFIG_VDE)
1859typedef struct VDEState {
1860 VLANClientState *vc;
1861 VDECONN *vde;
1862} VDEState;
1863
1864static void vde_to_qemu(void *opaque)
1865{
1866 VDEState *s = opaque;
1867 uint8_t buf[4096];
1868 int size;
1869
cc63bb0f 1870 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
63a01ef8
AL		 1871 if (size > 0) {
1872 qemu_send_packet(s->vc, buf, size);
1873 }
1874}
1875
4f1c942b 1876static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1877{
e3f5ec2b 1878 VDEState *s = vc->opaque;
068daedd 1879 ssize_t ret;
4f1c942b
MM		 1880
1881 do {
1882 ret = vde_send(s->vde, (const char *)buf, size, 0);
1883 } while (ret < 0 && errno == EINTR);
1884
1885 return ret;
63a01ef8
AL		 1886}
1887
b946a153
AL		 1888static void vde_cleanup(VLANClientState *vc)
1889{
1890 VDEState *s = vc->opaque;
1891 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1892 vde_close(s->vde);
1893 qemu_free(s);
1894}
1895
7a9f6e4a
AL		 1896static int net_vde_init(VLANState *vlan, const char *model,
1897 const char *name, const char *sock,
bf38c1a0 1898 int port, const char *group, int mode)
63a01ef8
AL		 1899{
1900 VDEState *s;
dd51058d
MM		 1901 char *init_group = (char *)group;
1902 char *init_sock = (char *)sock;
63a01ef8
AL		 1903
1904 struct vde_open_args args = {
1905 .port = port,
1906 .group = init_group,
1907 .mode = mode,
1908 };
1909
1910 s = qemu_mallocz(sizeof(VDEState));
cc63bb0f 1911 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
63a01ef8
AL		 1912 if (!s->vde){
1913 free(s);
1914 return -1;
1915 }
bb6e6364
MM		 1916 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_VDE,
1917 vlan, NULL, model, name, NULL,
70783b9c 1918 vde_receive, NULL, NULL,
283c7c63 1919 vde_cleanup, s);
63a01ef8 1920 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
7cb7434b 1921 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
63a01ef8
AL		 1922 sock, vde_datafd(s->vde));
1923 return 0;
1924}
1925#endif
1926
1927/* network connection */
1928typedef struct NetSocketState {
1929 VLANClientState *vc;
1930 int fd;
1931 int state; /* 0 = getting length, 1 = getting data */
abcd2baa
AL		 1932 unsigned int index;
1933 unsigned int packet_len;
63a01ef8
AL		 1934 uint8_t buf[4096];
1935 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1936} NetSocketState;
1937
1938typedef struct NetSocketListenState {
1939 VLANState *vlan;
bf38c1a0 1940 char *model;
7a9f6e4a 1941 char *name;
63a01ef8
AL		 1942 int fd;
1943} NetSocketListenState;
1944
1945/* XXX: we consider we can send the whole packet without blocking */
4f1c942b 1946static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1947{
e3f5ec2b 1948 NetSocketState *s = vc->opaque;
63a01ef8
AL		 1949 uint32_t len;
1950 len = htonl(size);
1951
1952 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
4f1c942b 1953 return send_all(s->fd, buf, size);
63a01ef8
AL		 1954}
1955
4f1c942b 1956static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1957{
e3f5ec2b 1958 NetSocketState *s = vc->opaque;
4f1c942b 1959
70503264 1960 return sendto(s->fd, (const void *)buf, size, 0,
4f1c942b 1961 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
63a01ef8
AL		 1962}
1963
1964static void net_socket_send(void *opaque)
1965{
1966 NetSocketState *s = opaque;
abcd2baa
AL		 1967 int size, err;
1968 unsigned l;
63a01ef8
AL		 1969 uint8_t buf1[4096];
1970 const uint8_t *buf;
1971
c5b76b38 1972 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
63a01ef8
AL		 1973 if (size < 0) {
1974 err = socket_error();
1975 if (err != EWOULDBLOCK)
1976 goto eoc;
1977 } else if (size == 0) {
1978 /* end of connection */
1979 eoc:
1980 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1981 closesocket(s->fd);
1982 return;
1983 }
1984 buf = buf1;
1985 while (size > 0) {
1986 /* reassemble a packet from the network */
1987 switch(s->state) {
1988 case 0:
1989 l = 4 - s->index;
1990 if (l > size)
1991 l = size;
1992 memcpy(s->buf + s->index, buf, l);
1993 buf += l;
1994 size -= l;
1995 s->index += l;
1996 if (s->index == 4) {
1997 /* got length */
1998 s->packet_len = ntohl(*(uint32_t *)s->buf);
1999 s->index = 0;
2000 s->state = 1;
2001 }
2002 break;
2003 case 1:
2004 l = s->packet_len - s->index;
2005 if (l > size)
2006 l = size;
abcd2baa
AL		 2007 if (s->index + l <= sizeof(s->buf)) {
2008 memcpy(s->buf + s->index, buf, l);
2009 } else {
2010 fprintf(stderr, "serious error: oversized packet received,"
2011 "connection terminated.\n");
2012 s->state = 0;
2013 goto eoc;
2014 }
2015
63a01ef8
AL		 2016 s->index += l;
2017 buf += l;
2018 size -= l;
2019 if (s->index >= s->packet_len) {
2020 qemu_send_packet(s->vc, s->buf, s->packet_len);
2021 s->index = 0;
2022 s->state = 0;
2023 }
2024 break;
2025 }
2026 }
2027}
2028
2029static void net_socket_send_dgram(void *opaque)
2030{
2031 NetSocketState *s = opaque;
2032 int size;
2033
c5b76b38 2034 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
63a01ef8
AL		 2035 if (size < 0)
2036 return;
2037 if (size == 0) {
2038 /* end of connection */
2039 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2040 return;
2041 }
2042 qemu_send_packet(s->vc, s->buf, size);
2043}
2044
2045static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
2046{
2047 struct ip_mreq imr;
2048 int fd;
2049 int val, ret;
2050 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
2051 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
2052 inet_ntoa(mcastaddr->sin_addr),
2053 (int)ntohl(mcastaddr->sin_addr.s_addr));
2054 return -1;
2055
2056 }
2057 fd = socket(PF_INET, SOCK_DGRAM, 0);
2058 if (fd < 0) {
2059 perror("socket(PF_INET, SOCK_DGRAM)");
2060 return -1;
2061 }
2062
2063 val = 1;
2064 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
2065 (const char *)&val, sizeof(val));
2066 if (ret < 0) {
2067 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
2068 goto fail;
2069 }
2070
2071 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
2072 if (ret < 0) {
2073 perror("bind");
2074 goto fail;
2075 }
2076
2077 /* Add host to multicast group */
2078 imr.imr_multiaddr = mcastaddr->sin_addr;
2079 imr.imr_interface.s_addr = htonl(INADDR_ANY);
2080
2081 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
2082 (const char *)&imr, sizeof(struct ip_mreq));
2083 if (ret < 0) {
2084 perror("setsockopt(IP_ADD_MEMBERSHIP)");
2085 goto fail;
2086 }
2087
2088 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
2089 val = 1;
2090 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
2091 (const char *)&val, sizeof(val));
2092 if (ret < 0) {
2093 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
2094 goto fail;
2095 }
2096
2097 socket_set_nonblock(fd);
2098 return fd;
2099fail:
2100 if (fd >= 0)
2101 closesocket(fd);
2102 return -1;
2103}
2104
b946a153
AL		 2105static void net_socket_cleanup(VLANClientState *vc)
2106{
2107 NetSocketState *s = vc->opaque;
2108 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2109 close(s->fd);
2110 qemu_free(s);
2111}
2112
7a9f6e4a
AL		 2113static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
2114 const char *model,
2115 const char *name,
bf38c1a0 2116 int fd, int is_connected)
63a01ef8
AL		 2117{
2118 struct sockaddr_in saddr;
2119 int newfd;
2120 socklen_t saddr_len;
2121 NetSocketState *s;
2122
2123 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
2124 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
2125 * by ONLY ONE process: we must "clone" this dgram socket --jjo
2126 */
2127
2128 if (is_connected) {
2129 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
2130 /* must be bound */
2131 if (saddr.sin_addr.s_addr==0) {
2132 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
2133 fd);
2134 return NULL;
2135 }
2136 /* clone dgram socket */
2137 newfd = net_socket_mcast_create(&saddr);
2138 if (newfd < 0) {
2139 /* error already reported by net_socket_mcast_create() */
2140 close(fd);
2141 return NULL;
2142 }
2143 /* clone newfd to fd, close newfd */
2144 dup2(newfd, fd);
2145 close(newfd);
2146
2147 } else {
2148 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2149 fd, strerror(errno));
2150 return NULL;
2151 }
2152 }
2153
2154 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8
AL		 2155 s->fd = fd;
2156
bb6e6364
MM		 2157 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET,
2158 vlan, NULL, model, name, NULL,
70783b9c 2159 net_socket_receive_dgram, NULL, NULL,
283c7c63 2160 net_socket_cleanup, s);
63a01ef8
AL		 2161 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2162
2163 /* mcast: save bound address as dst */
2164 if (is_connected) s->dgram_dst=saddr;
2165
2166 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2167 "socket: fd=%d (%s mcast=%s:%d)",
2168 fd, is_connected? "cloned" : "",
2169 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2170 return s;
2171}
2172
2173static void net_socket_connect(void *opaque)
2174{
2175 NetSocketState *s = opaque;
2176 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2177}
2178
7a9f6e4a
AL		 2179static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2180 const char *model,
2181 const char *name,
bf38c1a0 2182 int fd, int is_connected)
63a01ef8
AL		 2183{
2184 NetSocketState *s;
2185 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8 2186 s->fd = fd;
bb6e6364
MM		 2187 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET,
2188 vlan, NULL, model, name, NULL,
70783b9c 2189 net_socket_receive, NULL, NULL,
283c7c63 2190 net_socket_cleanup, s);
63a01ef8
AL		 2191 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2192 "socket: fd=%d", fd);
2193 if (is_connected) {
2194 net_socket_connect(s);
2195 } else {
2196 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2197 }
2198 return s;
2199}
2200
7a9f6e4a
AL		 2201static NetSocketState *net_socket_fd_init(VLANState *vlan,
2202 const char *model, const char *name,
bf38c1a0 2203 int fd, int is_connected)
63a01ef8 2204{
acedcfbf 2205 int so_type = -1, optlen=sizeof(so_type);
63a01ef8
AL		 2206
2207 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2208 (socklen_t *)&optlen)< 0) {
2209 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2210 return NULL;
2211 }
2212 switch(so_type) {
2213 case SOCK_DGRAM:
7a9f6e4a 2214 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
63a01ef8 2215 case SOCK_STREAM:
7a9f6e4a 2216 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2217 default:
2218 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2219 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
7a9f6e4a 2220 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2221 }
2222 return NULL;
2223}
2224
2225static void net_socket_accept(void *opaque)
2226{
2227 NetSocketListenState *s = opaque;
2228 NetSocketState *s1;
2229 struct sockaddr_in saddr;
2230 socklen_t len;
2231 int fd;
2232
2233 for(;;) {
2234 len = sizeof(saddr);
2235 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2236 if (fd < 0 && errno != EINTR) {
2237 return;
2238 } else if (fd >= 0) {
2239 break;
2240 }
2241 }
7a9f6e4a 2242 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
63a01ef8
AL		 2243 if (!s1) {
2244 closesocket(fd);
2245 } else {
2246 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2247 "socket: connection from %s:%d",
2248 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2249 }
2250}
2251
7a9f6e4a
AL		 2252static int net_socket_listen_init(VLANState *vlan,
2253 const char *model,
2254 const char *name,
bf38c1a0 2255 const char *host_str)
63a01ef8
AL		 2256{
2257 NetSocketListenState *s;
2258 int fd, val, ret;
2259 struct sockaddr_in saddr;
2260
2261 if (parse_host_port(&saddr, host_str) < 0)
2262 return -1;
2263
2264 s = qemu_mallocz(sizeof(NetSocketListenState));
63a01ef8
AL		 2265
2266 fd = socket(PF_INET, SOCK_STREAM, 0);
2267 if (fd < 0) {
2268 perror("socket");
2269 return -1;
2270 }
2271 socket_set_nonblock(fd);
2272
2273 /* allow fast reuse */
2274 val = 1;
2275 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2276
2277 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2278 if (ret < 0) {
2279 perror("bind");
2280 return -1;
2281 }
2282 ret = listen(fd, 0);
2283 if (ret < 0) {
2284 perror("listen");
2285 return -1;
2286 }
2287 s->vlan = vlan;
02374aa0
MM		 2288 s->model = qemu_strdup(model);
2289 s->name = name ? qemu_strdup(name) : NULL;
63a01ef8
AL		 2290 s->fd = fd;
2291 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2292 return 0;
2293}
2294
7a9f6e4a
AL		 2295static int net_socket_connect_init(VLANState *vlan,
2296 const char *model,
2297 const char *name,
bf38c1a0 2298 const char *host_str)
63a01ef8
AL		 2299{
2300 NetSocketState *s;
2301 int fd, connected, ret, err;
2302 struct sockaddr_in saddr;
2303
2304 if (parse_host_port(&saddr, host_str) < 0)
2305 return -1;
2306
2307 fd = socket(PF_INET, SOCK_STREAM, 0);
2308 if (fd < 0) {
2309 perror("socket");
2310 return -1;
2311 }
2312 socket_set_nonblock(fd);
2313
2314 connected = 0;
2315 for(;;) {
2316 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2317 if (ret < 0) {
2318 err = socket_error();
2319 if (err == EINTR || err == EWOULDBLOCK) {
2320 } else if (err == EINPROGRESS) {
2321 break;
2322#ifdef _WIN32
2323 } else if (err == WSAEALREADY) {
2324 break;
2325#endif
2326 } else {
2327 perror("connect");
2328 closesocket(fd);
2329 return -1;
2330 }
2331 } else {
2332 connected = 1;
2333 break;
2334 }
2335 }
7a9f6e4a 2336 s = net_socket_fd_init(vlan, model, name, fd, connected);
63a01ef8
AL		 2337 if (!s)
2338 return -1;
2339 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2340 "socket: connect to %s:%d",
2341 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2342 return 0;
2343}
2344
7a9f6e4a
AL		 2345static int net_socket_mcast_init(VLANState *vlan,
2346 const char *model,
2347 const char *name,
bf38c1a0 2348 const char *host_str)
63a01ef8
AL		 2349{
2350 NetSocketState *s;
2351 int fd;
2352 struct sockaddr_in saddr;
2353
2354 if (parse_host_port(&saddr, host_str) < 0)
2355 return -1;
2356
2357
2358 fd = net_socket_mcast_create(&saddr);
2359 if (fd < 0)
2360 return -1;
2361
7a9f6e4a 2362 s = net_socket_fd_init(vlan, model, name, fd, 0);
63a01ef8
AL		 2363 if (!s)
2364 return -1;
2365
2366 s->dgram_dst = saddr;
2367
2368 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2369 "socket: mcast=%s:%d",
2370 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2371 return 0;
2372
2373}
2374
bb9ea79e
AL		 2375typedef struct DumpState {
2376 VLANClientState *pcap_vc;
2377 int fd;
2378 int pcap_caplen;
2379} DumpState;
2380
2381#define PCAP_MAGIC 0xa1b2c3d4
2382
2383struct pcap_file_hdr {
2384 uint32_t magic;
2385 uint16_t version_major;
2386 uint16_t version_minor;
2387 int32_t thiszone;
2388 uint32_t sigfigs;
2389 uint32_t snaplen;
2390 uint32_t linktype;
2391};
2392
2393struct pcap_sf_pkthdr {
2394 struct {
2395 int32_t tv_sec;
2396 int32_t tv_usec;
2397 } ts;
2398 uint32_t caplen;
2399 uint32_t len;
2400};
2401
4f1c942b 2402static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
bb9ea79e 2403{
e3f5ec2b 2404 DumpState *s = vc->opaque;
bb9ea79e
AL		 2405 struct pcap_sf_pkthdr hdr;
2406 int64_t ts;
2407 int caplen;
2408
2409 /* Early return in case of previous error. */
2410 if (s->fd < 0) {
4f1c942b 2411 return size;
bb9ea79e
AL		 2412 }
2413
6ee093c9 2414 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
bb9ea79e
AL		 2415 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2416
37cb6fc3 2417 hdr.ts.tv_sec = ts / 1000000;
bb9ea79e
AL		 2418 hdr.ts.tv_usec = ts % 1000000;
2419 hdr.caplen = caplen;
2420 hdr.len = size;
2421 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2422 write(s->fd, buf, caplen) != caplen) {
2423 qemu_log("-net dump write error - stop dump\n");
2424 close(s->fd);
2425 s->fd = -1;
2426 }
4f1c942b
MM		 2427
2428 return size;
bb9ea79e
AL		 2429}
2430
2431static void net_dump_cleanup(VLANClientState *vc)
2432{
2433 DumpState *s = vc->opaque;
2434
2435 close(s->fd);
2436 qemu_free(s);
2437}
2438
fb12577c 2439static int net_dump_init(VLANState *vlan, const char *device,
bb9ea79e
AL		 2440 const char *name, const char *filename, int len)
2441{
2442 struct pcap_file_hdr hdr;
2443 DumpState *s;
2444
2445 s = qemu_malloc(sizeof(DumpState));
2446
024431b3 2447 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
bb9ea79e 2448 if (s->fd < 0) {
fb12577c 2449 qemu_error("-net dump: can't open %s\n", filename);
bb9ea79e
AL		 2450 return -1;
2451 }
2452
2453 s->pcap_caplen = len;
2454
2455 hdr.magic = PCAP_MAGIC;
2456 hdr.version_major = 2;
2457 hdr.version_minor = 4;
2458 hdr.thiszone = 0;
2459 hdr.sigfigs = 0;
2460 hdr.snaplen = s->pcap_caplen;
2461 hdr.linktype = 1;
2462
2463 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
fb12577c 2464 qemu_error("-net dump write error: %s\n", strerror(errno));
bb9ea79e
AL		 2465 close(s->fd);
2466 qemu_free(s);
2467 return -1;
2468 }
2469
bb6e6364
MM		 2470 s->pcap_vc = qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP,
2471 vlan, NULL, device, name, NULL,
70783b9c 2472 dump_receive, NULL, NULL,
bb9ea79e
AL		 2473 net_dump_cleanup, s);
2474 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2475 "dump to %s (len=%d)", filename, len);
2476 return 0;
2477}
2478
63a01ef8 2479/* find or alloc a new VLAN */
1a609520 2480VLANState *qemu_find_vlan(int id, int allocate)
63a01ef8 2481{
5610c3aa
MM		 2482 VLANState *vlan;
2483
2484 QTAILQ_FOREACH(vlan, &vlans, next) {
2485 if (vlan->id == id) {
63a01ef8 2486 return vlan;
5610c3aa 2487 }
63a01ef8 2488 }
5610c3aa 2489
1a609520
JK		 2490 if (!allocate) {
2491 return NULL;
2492 }
5610c3aa 2493
63a01ef8 2494 vlan = qemu_mallocz(sizeof(VLANState));
63a01ef8 2495 vlan->id = id;
5610c3aa 2496 QTAILQ_INIT(&vlan->clients);
f7105843
MM		 2497
2498 vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
2499 qemu_vlan_deliver_packet_iov,
2500 vlan);
5610c3aa
MM		 2501
2502 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
2503
63a01ef8
AL		 2504 return vlan;
2505}
2506
2ef924b4 2507VLANClientState *qemu_find_netdev(const char *id)
5869c4d5
MM		 2508{
2509 VLANClientState *vc;
2510
2511 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
2512 if (!strcmp(vc->name, id)) {
2513 return vc;
2514 }
2515 }
2516
2517 return NULL;
2518}
2519
7697079b
AL		 2520static int nic_get_free_idx(void)
2521{
2522 int index;
2523
2524 for (index = 0; index < MAX_NICS; index++)
2525 if (!nd_table[index].used)
2526 return index;
2527 return -1;
2528}
2529
07caea31
MA		 2530int qemu_show_nic_models(const char *arg, const char *const *models)
2531{
2532 int i;
2533
2534 if (!arg || strcmp(arg, "?"))
2535 return 0;
2536
2537 fprintf(stderr, "qemu: Supported NIC models: ");
2538 for (i = 0 ; models[i]; i++)
2539 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2540 return 1;
2541}
2542
d07f22c5
AL		 2543void qemu_check_nic_model(NICInfo *nd, const char *model)
2544{
2545 const char *models[2];
2546
2547 models[0] = model;
2548 models[1] = NULL;
2549
07caea31
MA		 2550 if (qemu_show_nic_models(nd->model, models))
2551 exit(0);
2552 if (qemu_find_nic_model(nd, models, model) < 0)
2553 exit(1);
d07f22c5
AL		 2554}
2555
07caea31
MA		 2556int qemu_find_nic_model(NICInfo *nd, const char * const *models,
2557 const char *default_model)
d07f22c5 2558{
07caea31 2559 int i;
d07f22c5
AL		 2560
2561 if (!nd->model)
32a8e14a 2562 nd->model = qemu_strdup(default_model);
d07f22c5 2563
07caea31
MA		 2564 for (i = 0 ; models[i]; i++) {
2565 if (strcmp(nd->model, models[i]) == 0)
2566 return i;
d07f22c5
AL		 2567 }
2568
07caea31
MA		 2569 qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
2570 return -1;
d07f22c5
AL		 2571}
2572
c1d6eed7
MM		 2573static int net_handle_fd_param(Monitor *mon, const char *param)
2574{
2575 if (!qemu_isdigit(param[0])) {
2576 int fd;
2577
2578 fd = monitor_get_fd(mon, param);
2579 if (fd == -1) {
fb12577c 2580 qemu_error("No file descriptor named %s found", param);
c1d6eed7
MM		 2581 return -1;
2582 }
2583
2584 return fd;
2585 } else {
2586 return strtol(param, NULL, 0);
2587 }
2588}
2589
f6b134ac
MM		 2590static int net_init_nic(QemuOpts *opts,
2591 Monitor *mon,
2592 const char *name,
2593 VLANState *vlan)
f83c6e10
MM		 2594{
2595 int idx;
2596 NICInfo *nd;
5869c4d5 2597 const char *netdev;
f83c6e10
MM		 2598
2599 idx = nic_get_free_idx();
2600 if (idx == -1 || nb_nics >= MAX_NICS) {
2601 qemu_error("Too Many NICs\n");
2602 return -1;
2603 }
2604
2605 nd = &nd_table[idx];
2606
2607 memset(nd, 0, sizeof(*nd));
2608
5869c4d5
MM		 2609 if ((netdev = qemu_opt_get(opts, "netdev"))) {
2610 nd->netdev = qemu_find_netdev(netdev);
2611 if (!nd->netdev) {
2612 qemu_error("netdev '%s' not found\n", netdev);
2613 return -1;
2614 }
2615 } else {
2616 assert(vlan);
2617 nd->vlan = vlan;
2618 }
6d952ebe
MM		 2619 if (name) {
2620 nd->name = qemu_strdup(name);
2621 }
f83c6e10
MM		 2622 if (qemu_opt_get(opts, "model")) {
2623 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
2624 }
2625 if (qemu_opt_get(opts, "addr")) {
2626 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
2627 }
2628
2629 nd->macaddr[0] = 0x52;
2630 nd->macaddr[1] = 0x54;
2631 nd->macaddr[2] = 0x00;
2632 nd->macaddr[3] = 0x12;
2633 nd->macaddr[4] = 0x34;
2634 nd->macaddr[5] = 0x56 + idx;
2635
2636 if (qemu_opt_get(opts, "macaddr") &&
2637 parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
2638 qemu_error("invalid syntax for ethernet address\n");
2639 return -1;
2640 }
2641
2642 nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
2643 if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
2644 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
2645 qemu_error("invalid # of vectors: %d\n", nd->nvectors);
2646 return -1;
2647 }
2648
2649 nd->used = 1;
5869c4d5
MM		 2650 if (vlan) {
2651 nd->vlan->nb_guest_devs++;
2652 }
f83c6e10
MM		 2653 nb_nics++;
2654
2655 return idx;
2656}
2657
a3a766e7 2658#if defined(CONFIG_SLIRP)
ec302ffd
MM		 2659static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
2660{
2661 struct slirp_config_str *config;
2662
2663 if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
2664 return 0;
2665 }
2666
2667 config = qemu_mallocz(sizeof(*config));
2668
2669 pstrcpy(config->str, sizeof(config->str), value);
2670
2671 if (!strcmp(name, "hostfwd")) {
2672 config->flags = SLIRP_CFG_HOSTFWD;
2673 }
2674
2675 config->next = slirp_configs;
2676 slirp_configs = config;
2677
2678 return 0;
2679}
2680
f6b134ac
MM		 2681static int net_init_slirp(QemuOpts *opts,
2682 Monitor *mon,
2683 const char *name,
2684 VLANState *vlan)
ec302ffd 2685{
ec302ffd 2686 struct slirp_config_str *config;
ec302ffd
MM		 2687 const char *vhost;
2688 const char *vhostname;
2689 const char *vdhcp_start;
2690 const char *vnamesrv;
2691 const char *tftp_export;
2692 const char *bootfile;
2693 const char *smb_export;
2694 const char *vsmbsrv;
2695 char *vnet = NULL;
2696 int restricted = 0;
2697 int ret;
2698
ec302ffd
MM		 2699 vhost = qemu_opt_get(opts, "host");
2700 vhostname = qemu_opt_get(opts, "hostname");
2701 vdhcp_start = qemu_opt_get(opts, "dhcpstart");
2702 vnamesrv = qemu_opt_get(opts, "dns");
2703 tftp_export = qemu_opt_get(opts, "tftp");
2704 bootfile = qemu_opt_get(opts, "bootfile");
2705 smb_export = qemu_opt_get(opts, "smb");
2706 vsmbsrv = qemu_opt_get(opts, "smbserver");
2707
2708 if (qemu_opt_get(opts, "ip")) {
2709 const char *ip = qemu_opt_get(opts, "ip");
2710 int l = strlen(ip) + strlen("/24") + 1;
2711
2712 vnet = qemu_malloc(l);
2713
2714 /* emulate legacy ip= parameter */
2715 pstrcpy(vnet, l, ip);
2716 pstrcat(vnet, l, "/24");
2717 }
2718
2719 if (qemu_opt_get(opts, "net")) {
2720 if (vnet) {
2721 qemu_free(vnet);
2722 }
2723 vnet = qemu_strdup(qemu_opt_get(opts, "net"));
2724 }
2725
2726 if (qemu_opt_get(opts, "restrict") &&
2727 qemu_opt_get(opts, "restrict")[0] == 'y') {
2728 restricted = 1;
2729 }
2730
2731 qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
2732
2733 ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
2734 vhostname, tftp_export, bootfile, vdhcp_start,
2735 vnamesrv, smb_export, vsmbsrv);
2736
2737 while (slirp_configs) {
2738 config = slirp_configs;
2739 slirp_configs = config->next;
2740 qemu_free(config);
2741 }
2742
f6b134ac 2743 if (ret != -1 && vlan) {
ec302ffd
MM		 2744 vlan->nb_host_devs++;
2745 }
2746
2747 qemu_free(vnet);
2748
2749 return ret;
2750}
a3a766e7 2751#endif /* CONFIG_SLIRP */
ec302ffd 2752
8a1c5235 2753#ifdef _WIN32
f6b134ac
MM		 2754static int net_init_tap_win32(QemuOpts *opts,
2755 Monitor *mon,
2756 const char *name,
2757 VLANState *vlan)
8a1c5235 2758{
8a1c5235
MM		 2759 const char *ifname;
2760
8a1c5235
MM		 2761 ifname = qemu_opt_get(opts, "ifname");
2762
2763 if (!ifname) {
2764 qemu_error("tap: no interface name\n");
2765 return -1;
2766 }
2767
2768 if (tap_win32_init(vlan, "tap", name, ifname) == -1) {
2769 return -1;
2770 }
2771
f6b134ac
MM		 2772 if (vlan) {
2773 vlan->nb_host_devs++;
2774 }
8a1c5235
MM		 2775
2776 return 0;
2777}
2778#elif !defined(_AIX)
f6b134ac
MM		 2779static int net_init_tap(QemuOpts *opts,
2780 Monitor *mon,
2781 const char *name,
2782 VLANState *vlan)
8a1c5235 2783{
8a1c5235 2784 TAPState *s;
424a7f96 2785 int fd, vnet_hdr;
8a1c5235 2786
8a1c5235 2787 if (qemu_opt_get(opts, "fd")) {
8a1c5235
MM		 2788 if (qemu_opt_get(opts, "ifname") ||
2789 qemu_opt_get(opts, "script") ||
baf74c95
MM		 2790 qemu_opt_get(opts, "downscript") ||
2791 qemu_opt_get(opts, "vnet_hdr")) {
2792 qemu_error("ifname=, script=, downscript= and vnet_hdr= is invalid with fd=\n");
8a1c5235
MM		 2793 return -1;
2794 }
2795
2796 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2797 if (fd == -1) {
2798 return -1;
2799 }
2800
2801 fcntl(fd, F_SETFL, O_NONBLOCK);
2802
424a7f96 2803 vnet_hdr = tap_probe_vnet_hdr(fd);
8a1c5235 2804 } else {
424a7f96
MM		 2805 if (!qemu_opt_get(opts, "script")) {
2806 qemu_opt_set(opts, "script", DEFAULT_NETWORK_SCRIPT);
8a1c5235 2807 }
424a7f96
MM		 2808
2809 if (!qemu_opt_get(opts, "downscript")) {
2810 qemu_opt_set(opts, "downscript", DEFAULT_NETWORK_DOWN_SCRIPT);
8a1c5235
MM		 2811 }
2812
424a7f96 2813 fd = net_tap_init(opts, &vnet_hdr);
8a1c5235
MM		 2814 }
2815
424a7f96 2816 s = net_tap_fd_init(vlan, "tap", name, fd, vnet_hdr);
8a1c5235 2817 if (!s) {
424a7f96 2818 close(fd);
8a1c5235
MM		 2819 return -1;
2820 }
2821
2822 if (tap_set_sndbuf(s, opts) < 0) {
2823 return -1;
2824 }
2825
424a7f96
MM		 2826 if (qemu_opt_get(opts, "fd")) {
2827 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
2828 } else {
2829 const char *ifname, *script, *downscript;
2830
2831 ifname = qemu_opt_get(opts, "ifname");
2832 script = qemu_opt_get(opts, "script");
2833 downscript = qemu_opt_get(opts, "downscript");
2834
2835 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2836 "ifname=%s,script=%s,downscript=%s",
2837 ifname, script, downscript);
2838
2839 if (strcmp(downscript, "no") != 0) {
2840 snprintf(s->down_script, sizeof(s->down_script), "%s", downscript);
2841 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
2842 }
2843 }
2844
f6b134ac
MM		 2845 if (vlan) {
2846 vlan->nb_host_devs++;
2847 }
8a1c5235
MM		 2848
2849 return 0;
2850}
2851#endif
2852
f6b134ac
MM		 2853static int net_init_socket(QemuOpts *opts,
2854 Monitor *mon,
2855 const char *name,
2856 VLANState *vlan)
88ce16ca 2857{
88ce16ca
MM		 2858 if (qemu_opt_get(opts, "fd")) {
2859 int fd;
2860
2861 if (qemu_opt_get(opts, "listen") ||
2862 qemu_opt_get(opts, "connect") ||
2863 qemu_opt_get(opts, "mcast")) {
2864 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2865 return -1;
2866 }
2867
2868 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2869 if (fd == -1) {
2870 return -1;
2871 }
2872
2873 if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) {
2874 close(fd);
2875 return -1;
2876 }
2877 } else if (qemu_opt_get(opts, "listen")) {
2878 const char *listen;
2879
2880 if (qemu_opt_get(opts, "fd") ||
2881 qemu_opt_get(opts, "connect") ||
2882 qemu_opt_get(opts, "mcast")) {
2883 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2884 return -1;
2885 }
2886
2887 listen = qemu_opt_get(opts, "listen");
2888
2889 if (net_socket_listen_init(vlan, "socket", name, listen) == -1) {
2890 return -1;
2891 }
2892 } else if (qemu_opt_get(opts, "connect")) {
2893 const char *connect;
2894
2895 if (qemu_opt_get(opts, "fd") ||
2896 qemu_opt_get(opts, "listen") ||
2897 qemu_opt_get(opts, "mcast")) {
2898 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2899 return -1;
2900 }
2901
2902 connect = qemu_opt_get(opts, "connect");
2903
2904 if (net_socket_connect_init(vlan, "socket", name, connect) == -1) {
2905 return -1;
2906 }
2907 } else if (qemu_opt_get(opts, "mcast")) {
2908 const char *mcast;
2909
2910 if (qemu_opt_get(opts, "fd") ||
2911 qemu_opt_get(opts, "connect") ||
2912 qemu_opt_get(opts, "listen")) {
2913 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
2914 return -1;
2915 }
2916
2917 mcast = qemu_opt_get(opts, "mcast");
2918
2919 if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) {
2920 return -1;
2921 }
2922 } else {
2923 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
2924 return -1;
2925 }
2926
f6b134ac
MM		 2927 if (vlan) {
2928 vlan->nb_host_devs++;
2929 }
88ce16ca
MM		 2930
2931 return 0;
2932}
2933
dd51058d 2934#ifdef CONFIG_VDE
f6b134ac
MM		 2935static int net_init_vde(QemuOpts *opts,
2936 Monitor *mon,
2937 const char *name,
2938 VLANState *vlan)
dd51058d 2939{
dd51058d
MM		 2940 const char *sock;
2941 const char *group;
2942 int port, mode;
2943
dd51058d
MM		 2944 sock = qemu_opt_get(opts, "sock");
2945 group = qemu_opt_get(opts, "group");
2946
2947 port = qemu_opt_get_number(opts, "port", 0);
2948 mode = qemu_opt_get_number(opts, "mode", 0700);
2949
2950 if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) {
2951 return -1;
2952 }
2953
f6b134ac
MM		 2954 if (vlan) {
2955 vlan->nb_host_devs++;
2956 }
dd51058d
MM		 2957
2958 return 0;
2959}
2960#endif
2961
f6b134ac
MM		 2962static int net_init_dump(QemuOpts *opts,
2963 Monitor *mon,
2964 const char *name,
2965 VLANState *vlan)
ed2955c2 2966{
ed2955c2
MM		 2967 int len;
2968 const char *file;
ed2955c2
MM		 2969 char def_file[128];
2970
f6b134ac 2971 assert(vlan);
ed2955c2 2972
ed2955c2
MM		 2973 file = qemu_opt_get(opts, "file");
2974 if (!file) {
2975 snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id);
2976 file = def_file;
2977 }
2978
2979 len = qemu_opt_get_size(opts, "len", 65536);
2980
2981 return net_dump_init(vlan, "dump", name, file, len);
2982}
2983
f83c6e10
MM		 2984#define NET_COMMON_PARAMS_DESC \
2985 { \
2986 .name = "type", \
2987 .type = QEMU_OPT_STRING, \
2988 .help = "net client type (nic, tap etc.)", \
2989 }, { \
2990 .name = "vlan", \
2991 .type = QEMU_OPT_NUMBER, \
2992 .help = "vlan number", \
2993 }, { \
2994 .name = "name", \
2995 .type = QEMU_OPT_STRING, \
2996 .help = "identifier for monitor commands", \
2997 }
2998
6d952ebe
MM		 2999typedef int (*net_client_init_func)(QemuOpts *opts,
3000 Monitor *mon,
f6b134ac
MM		 3001 const char *name,
3002 VLANState *vlan);
f83c6e10
MM		 3003
3004/* magic number, but compiler will warn if too small */
3005#define NET_MAX_DESC 20
3006
3007static struct {
3008 const char *type;
3009 net_client_init_func init;
3010 QemuOptDesc desc[NET_MAX_DESC];
3011} net_client_types[] = {
3012 {
3013 .type = "none",
3014 .desc = {
3015 NET_COMMON_PARAMS_DESC,
3016 { /* end of list */ }
3017 },
3018 }, {
3019 .type = "nic",
3020 .init = net_init_nic,
3021 .desc = {
3022 NET_COMMON_PARAMS_DESC,
5869c4d5
MM		 3023 {
3024 .name = "netdev",
3025 .type = QEMU_OPT_STRING,
3026 .help = "id of -netdev to connect to",
3027 },
f83c6e10
MM		 3028 {
3029 .name = "macaddr",
3030 .type = QEMU_OPT_STRING,
3031 .help = "MAC address",
3032 }, {
3033 .name = "model",
3034 .type = QEMU_OPT_STRING,
3035 .help = "device model (e1000, rtl8139, virtio etc.)",
3036 }, {
3037 .name = "addr",
3038 .type = QEMU_OPT_STRING,
3039 .help = "PCI device address",
3040 }, {
3041 .name = "vectors",
3042 .type = QEMU_OPT_NUMBER,
3043 .help = "number of MSI-x vectors, 0 to disable MSI-X",
3044 },
3045 { /* end of list */ }
3046 },
ec302ffd
MM		 3047#ifdef CONFIG_SLIRP
3048 }, {
3049 .type = "user",
3050 .init = net_init_slirp,
3051 .desc = {
3052 NET_COMMON_PARAMS_DESC,
3053 {
3054 .name = "hostname",
3055 .type = QEMU_OPT_STRING,
3056 .help = "client hostname reported by the builtin DHCP server",
3057 }, {
3058 .name = "restrict",
3059 .type = QEMU_OPT_STRING,
3060 .help = "isolate the guest from the host (y|yes|n|no)",
3061 }, {
3062 .name = "ip",
3063 .type = QEMU_OPT_STRING,
3064 .help = "legacy parameter, use net= instead",
3065 }, {
3066 .name = "net",
3067 .type = QEMU_OPT_STRING,
3068 .help = "IP address and optional netmask",
3069 }, {
3070 .name = "host",
3071 .type = QEMU_OPT_STRING,
3072 .help = "guest-visible address of the host",
3073 }, {
3074 .name = "tftp",
3075 .type = QEMU_OPT_STRING,
3076 .help = "root directory of the built-in TFTP server",
3077 }, {
3078 .name = "bootfile",
3079 .type = QEMU_OPT_STRING,
3080 .help = "BOOTP filename, for use with tftp=",
3081 }, {
3082 .name = "dhcpstart",
3083 .type = QEMU_OPT_STRING,
3084 .help = "the first of the 16 IPs the built-in DHCP server can assign",
3085 }, {
3086 .name = "dns",
3087 .type = QEMU_OPT_STRING,
3088 .help = "guest-visible address of the virtual nameserver",
3089 }, {
3090 .name = "smb",
3091 .type = QEMU_OPT_STRING,
3092 .help = "root directory of the built-in SMB server",
3093 }, {
3094 .name = "smbserver",
3095 .type = QEMU_OPT_STRING,
3096 .help = "IP address of the built-in SMB server",
3097 }, {
3098 .name = "hostfwd",
3099 .type = QEMU_OPT_STRING,
3100 .help = "guest port number to forward incoming TCP or UDP connections",
3101 }, {
3102 .name = "guestfwd",
3103 .type = QEMU_OPT_STRING,
3104 .help = "IP address and port to forward guest TCP connections",
3105 },
3106 { /* end of list */ }
3107 },
8a1c5235
MM		 3108#endif
3109#ifdef _WIN32
3110 }, {
3111 .type = "tap",
3112 .init = net_init_tap_win32,
3113 .desc = {
3114 NET_COMMON_PARAMS_DESC,
3115 {
3116 .name = "ifname",
3117 .type = QEMU_OPT_STRING,
3118 .help = "interface name",
3119 },
3120 { /* end of list */ }
3121 },
3122#elif !defined(_AIX)
3123 }, {
3124 .type = "tap",
3125 .init = net_init_tap,
3126 .desc = {
3127 NET_COMMON_PARAMS_DESC,
3128 {
3129 .name = "fd",
3130 .type = QEMU_OPT_STRING,
3131 .help = "file descriptor of an already opened tap",
3132 }, {
3133 .name = "ifname",
3134 .type = QEMU_OPT_STRING,
3135 .help = "interface name",
3136 }, {
3137 .name = "script",
3138 .type = QEMU_OPT_STRING,
3139 .help = "script to initialize the interface",
3140 }, {
3141 .name = "downscript",
3142 .type = QEMU_OPT_STRING,
3143 .help = "script to shut down the interface",
8a1c5235
MM		 3144 }, {
3145 .name = "sndbuf",
3146 .type = QEMU_OPT_SIZE,
3147 .help = "send buffer limit"
baf74c95
MM		 3148 }, {
3149 .name = "vnet_hdr",
3150 .type = QEMU_OPT_BOOL,
3151 .help = "enable the IFF_VNET_HDR flag on the tap interface"
8a1c5235
MM		 3152 },
3153 { /* end of list */ }
3154 },
ec302ffd 3155#endif
88ce16ca
MM		 3156 }, {
3157 .type = "socket",
3158 .init = net_init_socket,
3159 .desc = {
3160 NET_COMMON_PARAMS_DESC,
3161 {
3162 .name = "fd",
3163 .type = QEMU_OPT_STRING,
3164 .help = "file descriptor of an already opened socket",
3165 }, {
3166 .name = "listen",
3167 .type = QEMU_OPT_STRING,
3168 .help = "port number, and optional hostname, to listen on",
3169 }, {
3170 .name = "connect",
3171 .type = QEMU_OPT_STRING,
3172 .help = "port number, and optional hostname, to connect to",
3173 }, {
3174 .name = "mcast",
3175 .type = QEMU_OPT_STRING,
3176 .help = "UDP multicast address and port number",
3177 },
3178 { /* end of list */ }
3179 },
dd51058d
MM		 3180#ifdef CONFIG_VDE
3181 }, {
3182 .type = "vde",
3183 .init = net_init_vde,
3184 .desc = {
3185 NET_COMMON_PARAMS_DESC,
3186 {
3187 .name = "sock",
3188 .type = QEMU_OPT_STRING,
3189 .help = "socket path",
3190 }, {
3191 .name = "port",
3192 .type = QEMU_OPT_NUMBER,
3193 .help = "port number",
3194 }, {
3195 .name = "group",
3196 .type = QEMU_OPT_STRING,
3197 .help = "group owner of socket",
3198 }, {
3199 .name = "mode",
3200 .type = QEMU_OPT_NUMBER,
3201 .help = "permissions for socket",
3202 },
3203 { /* end of list */ }
3204 },
3205#endif
ed2955c2
MM		 3206 }, {
3207 .type = "dump",
3208 .init = net_init_dump,
3209 .desc = {
3210 NET_COMMON_PARAMS_DESC,
3211 {
3212 .name = "len",
3213 .type = QEMU_OPT_SIZE,
3214 .help = "per-packet size limit (64k default)",
3215 }, {
3216 .name = "file",
3217 .type = QEMU_OPT_STRING,
3218 .help = "dump file path (default is qemu-vlan0.pcap)",
3219 },
3220 { /* end of list */ }
3221 },
f83c6e10
MM		 3222 },
3223 { /* end of list */ }
3224};
3225
f6b134ac 3226int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
f83c6e10 3227{
6d952ebe 3228 const char *name;
f83c6e10
MM		 3229 const char *type;
3230 int i;
3231
3232 type = qemu_opt_get(opts, "type");
3233 if (!type) {
3234 qemu_error("No type specified for -net\n");
3235 return -1;
3236 }
3237
f6b134ac
MM		 3238 if (is_netdev) {
3239 if (strcmp(type, "tap") != 0 &&
3240#ifdef CONFIG_SLIRP
3241 strcmp(type, "user") != 0 &&
3242#endif
3243#ifdef CONFIG_VDE
3244 strcmp(type, "vde") != 0 &&
3245#endif
3246 strcmp(type, "socket") != 0) {
3247 qemu_error("The '%s' network backend type is not valid with -netdev\n",
3248 type);
3249 return -1;
3250 }
3251
3252 if (qemu_opt_get(opts, "vlan")) {
3253 qemu_error("The 'vlan' parameter is not valid with -netdev\n");
3254 return -1;
3255 }
3256 if (qemu_opt_get(opts, "name")) {
3257 qemu_error("The 'name' parameter is not valid with -netdev\n");
3258 return -1;
3259 }
3260 if (!qemu_opts_id(opts)) {
3261 qemu_error("The id= parameter is required with -netdev\n");
3262 return -1;
3263 }
3264 }
3265
6d952ebe
MM		 3266 name = qemu_opts_id(opts);
3267 if (!name) {
3268 name = qemu_opt_get(opts, "name");
3269 }
3270
f83c6e10
MM		 3271 for (i = 0; net_client_types[i].type != NULL; i++) {
3272 if (!strcmp(net_client_types[i].type, type)) {
f6b134ac
MM		 3273 VLANState *vlan = NULL;
3274
f83c6e10
MM		 3275 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
3276 return -1;
3277 }
3278
5869c4d5
MM		 3279 /* Do not add to a vlan if it's a -netdev or a nic with a
3280 * netdev= parameter. */
3281 if (!(is_netdev ||
3282 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
f6b134ac
MM		 3283 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
3284 }
3285
f83c6e10 3286 if (net_client_types[i].init) {
f6b134ac 3287 return net_client_types[i].init(opts, mon, name, vlan);
f83c6e10
MM		 3288 } else {
3289 return 0;
3290 }
3291 }
3292 }
3293
3294 qemu_error("Invalid -net type '%s'\n", type);
3295 return -1;
3296}
3297
8b13c4a7
AL		 3298void net_client_uninit(NICInfo *nd)
3299{
d80b9fc6
MM		 3300 if (nd->vlan) {
3301 nd->vlan->nb_guest_devs--;
3302 }
8b13c4a7 3303 nb_nics--;
a9796703 3304
9203f520
MM		 3305 qemu_free(nd->model);
3306 qemu_free(nd->name);
3307 qemu_free(nd->devaddr);
a9796703 3308
d2cffe30 3309 nd->used = 0;
8b13c4a7
AL		 3310}
3311
6f338c34
AL		 3312static int net_host_check_device(const char *device)
3313{
3314 int i;
bb9ea79e 3315 const char *valid_param_list[] = { "tap", "socket", "dump"
6f338c34
AL		 3316#ifdef CONFIG_SLIRP
3317 ,"user"
3318#endif
3319#ifdef CONFIG_VDE
3320 ,"vde"
3321#endif
3322 };
3323 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
3324 if (!strncmp(valid_param_list[i], device,
3325 strlen(valid_param_list[i])))
3326 return 1;
3327 }
3328
3329 return 0;
3330}
3331
f18c16de 3332void net_host_device_add(Monitor *mon, const QDict *qdict)
6f338c34 3333{
f18c16de 3334 const char *device = qdict_get_str(qdict, "device");
7f1c9d20
MM		 3335 const char *opts_str = qdict_get_try_str(qdict, "opts");
3336 QemuOpts *opts;
f18c16de 3337
6f338c34 3338 if (!net_host_check_device(device)) {
376253ec 3339 monitor_printf(mon, "invalid host network device %s\n", device);
6f338c34
AL		 3340 return;
3341 }
7f1c9d20
MM		 3342
3343 opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
3344 if (!opts) {
3345 monitor_printf(mon, "parsing network options '%s' failed\n",
3346 opts_str ? opts_str : "");
3347 return;
3348 }
3349
3350 qemu_opt_set(opts, "type", device);
3351
f6b134ac 3352 if (net_client_init(mon, opts, 0) < 0) {
5c8be678
AL		 3353 monitor_printf(mon, "adding host network device %s failed\n", device);
3354 }
6f338c34
AL		 3355}
3356
f18c16de 3357void net_host_device_remove(Monitor *mon, const QDict *qdict)
6f338c34 3358{
6f338c34 3359 VLANClientState *vc;
f18c16de
LC		 3360 int vlan_id = qdict_get_int(qdict, "vlan_id");
3361 const char *device = qdict_get_str(qdict, "device");
6f338c34 3362
1a609520 3363 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
6f338c34 3364 if (!vc) {
6f338c34
AL		 3365 return;
3366 }
e8f1f9db
AL		 3367 if (!net_host_check_device(vc->model)) {
3368 monitor_printf(mon, "invalid host network device %s\n", device);
3369 return;
3370 }
6f338c34
AL		 3371 qemu_del_vlan_client(vc);
3372}
3373
406c8df3
GC		 3374void net_set_boot_mask(int net_boot_mask)
3375{
3376 int i;
3377
3378 /* Only the first four NICs may be bootable */
3379 net_boot_mask = net_boot_mask & 0xF;
3380
3381 for (i = 0; i < nb_nics; i++) {
3382 if (net_boot_mask & (1 << i)) {
3383 nd_table[i].bootable = 1;
3384 net_boot_mask &= ~(1 << i);
3385 }
3386 }
3387
3388 if (net_boot_mask) {
3389 fprintf(stderr, "Cannot boot from non-existent NIC\n");
3390 exit(1);
3391 }
3392}
3393
376253ec 3394void do_info_network(Monitor *mon)
63a01ef8
AL		 3395{
3396 VLANState *vlan;
63a01ef8 3397
5610c3aa
MM		 3398 QTAILQ_FOREACH(vlan, &vlans, next) {
3399 VLANClientState *vc;
3400
376253ec 3401 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
5610c3aa
MM		 3402
3403 QTAILQ_FOREACH(vc, &vlan->clients, next) {
376253ec 3404 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
5610c3aa 3405 }
63a01ef8
AL		 3406 }
3407}
3408
f18c16de 3409void do_set_link(Monitor *mon, const QDict *qdict)
436e5e53
AL		 3410{
3411 VLANState *vlan;
3412 VLANClientState *vc = NULL;
f18c16de
LC		 3413 const char *name = qdict_get_str(qdict, "name");
3414 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
436e5e53 3415
5610c3aa
MM		 3416 QTAILQ_FOREACH(vlan, &vlans, next) {
3417 QTAILQ_FOREACH(vc, &vlan->clients, next) {
3418 if (strcmp(vc->name, name) == 0) {
dd5de373 3419 goto done;
5610c3aa
MM		 3420 }
3421 }
3422 }
dd5de373 3423done:
436e5e53
AL		 3424
3425 if (!vc) {
7dc3fa09 3426 monitor_printf(mon, "could not find network device '%s'\n", name);
c3cf0d3f 3427 return;
436e5e53
AL		 3428 }
3429
3430 if (strcmp(up_or_down, "up") == 0)
3431 vc->link_down = 0;
3432 else if (strcmp(up_or_down, "down") == 0)
3433 vc->link_down = 1;
3434 else
376253ec
AL		 3435 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
3436 "valid\n", up_or_down);
436e5e53 3437
34b25ca7
AL		 3438 if (vc->link_status_changed)
3439 vc->link_status_changed(vc);
436e5e53
AL		 3440}
3441
63a01ef8
AL		 3442void net_cleanup(void)
3443{
3444 VLANState *vlan;
577c4af9 3445 VLANClientState *vc, *next_vc;
63a01ef8 3446
5610c3aa 3447 QTAILQ_FOREACH(vlan, &vlans, next) {
5610c3aa 3448 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
b946a153 3449 qemu_del_vlan_client(vc);
63a01ef8
AL		 3450 }
3451 }
577c4af9
MM		 3452
3453 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
3454 qemu_del_vlan_client(vc);
3455 }
63a01ef8
AL		 3456}
3457
dc1c9fe8 3458static void net_check_clients(void)
63a01ef8
AL		 3459{
3460 VLANState *vlan;
3461
5610c3aa 3462 QTAILQ_FOREACH(vlan, &vlans, next) {
63a01ef8
AL		 3463 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
3464 continue;
3465 if (vlan->nb_guest_devs == 0)
3466 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
3467 if (vlan->nb_host_devs == 0)
3468 fprintf(stderr,
3469 "Warning: vlan %d is not connected to host network\n",
3470 vlan->id);
3471 }
3472}
dc1c9fe8
MM		 3473
3474static int net_init_client(QemuOpts *opts, void *dummy)
3475{
c1671a08
MM		 3476 if (net_client_init(NULL, opts, 0) < 0)
3477 return -1;
3478 return 0;
f6b134ac
MM		 3479}
3480
3481static int net_init_netdev(QemuOpts *opts, void *dummy)
3482{
3483 return net_client_init(NULL, opts, 1);
dc1c9fe8
MM		 3484}
3485
3486int net_init_clients(void)
3487{
3488 if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
3489 /* if no clients, we use a default config */
3490 qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
3491#ifdef CONFIG_SLIRP
3492 qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
3493#endif
3494 }
3495
5610c3aa 3496 QTAILQ_INIT(&vlans);
577c4af9 3497 QTAILQ_INIT(&non_vlan_clients);
5610c3aa 3498
f6b134ac
MM		 3499 if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1)
3500 return -1;
3501
dc1c9fe8
MM		 3502 if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
3503 return -1;
3504 }
3505
3506 net_check_clients();
3507
3508 return 0;
3509}
3510
7f161aae 3511int net_client_parse(QemuOptsList *opts_list, const char *optarg)
dc1c9fe8 3512{
a3a766e7 3513#if defined(CONFIG_SLIRP)
dc1c9fe8 3514 /* handle legacy -net channel,port:chr */
7f161aae
MM		 3515 if (!strcmp(opts_list->name, "net") &&
3516 !strncmp(optarg, "channel,", strlen("channel,"))) {
dc1c9fe8
MM		 3517 int ret;
3518
3519 optarg += strlen("channel,");
3520
3521 if (QTAILQ_EMPTY(&slirp_stacks)) {
3522 struct slirp_config_str *config;
3523
3524 config = qemu_malloc(sizeof(*config));
3525 pstrcpy(config->str, sizeof(config->str), optarg);
3526 config->flags = SLIRP_CFG_LEGACY;
3527 config->next = slirp_configs;
3528 slirp_configs = config;
3529 ret = 0;
3530 } else {
3531 ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
3532 }
3533
3534 return ret;
3535 }
a3a766e7 3536#endif
7f161aae 3537 if (!qemu_opts_parse(opts_list, optarg, "type")) {
dc1c9fe8
MM		 3538 return -1;
3539 }
3540
3541 return 0;
3542}
Empty description
This page took 0.709641 seconds and 4 git commands to generate.