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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__
f54c7bdc 49#include "net/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"
a8ed73f7 106#include "net/tap.h"
511d2b14
BS		 107#include "monitor.h"
108#include "sysemu.h"
109#include "qemu-timer.h"
110#include "qemu-char.h"
111#include "audio/audio.h"
112#include "qemu_socket.h"
bb9ea79e 113#include "qemu-log.h"
f83c6e10 114#include "qemu-config.h"
511d2b14 115
d918f23e 116#include "slirp/libslirp.h"
511d2b14 117
5610c3aa 118static QTAILQ_HEAD(, VLANState) vlans;
577c4af9 119static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
63a01ef8
AL		 120
121/***********************************************************/
122/* network device redirectors */
123
124#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
125static void hex_dump(FILE *f, const uint8_t *buf, int size)
126{
127 int len, i, j, c;
128
129 for(i=0;i<size;i+=16) {
130 len = size - i;
131 if (len > 16)
132 len = 16;
133 fprintf(f, "%08x ", i);
134 for(j=0;j<16;j++) {
135 if (j < len)
136 fprintf(f, " %02x", buf[i+j]);
137 else
138 fprintf(f, " ");
139 }
140 fprintf(f, " ");
141 for(j=0;j<len;j++) {
142 c = buf[i+j];
143 if (c < ' ' || c > '~')
144 c = '.';
145 fprintf(f, "%c", c);
146 }
147 fprintf(f, "\n");
148 }
149}
150#endif
151
152static int parse_macaddr(uint8_t *macaddr, const char *p)
153{
154 int i;
155 char *last_char;
156 long int offset;
157
158 errno = 0;
159 offset = strtol(p, &last_char, 0);
160 if (0 == errno && '\0' == *last_char &&
161 offset >= 0 && offset <= 0xFFFFFF) {
162 macaddr[3] = (offset & 0xFF0000) >> 16;
163 macaddr[4] = (offset & 0xFF00) >> 8;
164 macaddr[5] = offset & 0xFF;
165 return 0;
166 } else {
167 for(i = 0; i < 6; i++) {
168 macaddr[i] = strtol(p, (char **)&p, 16);
169 if (i == 5) {
170 if (*p != '\0')
171 return -1;
172 } else {
173 if (*p != ':' && *p != '-')
174 return -1;
175 p++;
176 }
177 }
178 return 0;
179 }
180
181 return -1;
182}
183
184static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
185{
186 const char *p, *p1;
187 int len;
188 p = *pp;
189 p1 = strchr(p, sep);
190 if (!p1)
191 return -1;
192 len = p1 - p;
193 p1++;
194 if (buf_size > 0) {
195 if (len > buf_size - 1)
196 len = buf_size - 1;
197 memcpy(buf, p, len);
198 buf[len] = '\0';
199 }
200 *pp = p1;
201 return 0;
202}
203
204int parse_host_src_port(struct sockaddr_in *haddr,
205 struct sockaddr_in *saddr,
206 const char *input_str)
207{
208 char *str = strdup(input_str);
209 char *host_str = str;
210 char *src_str;
211 const char *src_str2;
212 char *ptr;
213
214 /*
215 * Chop off any extra arguments at the end of the string which
216 * would start with a comma, then fill in the src port information
217 * if it was provided else use the "any address" and "any port".
218 */
219 if ((ptr = strchr(str,',')))
220 *ptr = '\0';
221
222 if ((src_str = strchr(input_str,'@'))) {
223 *src_str = '\0';
224 src_str++;
225 }
226
227 if (parse_host_port(haddr, host_str) < 0)
228 goto fail;
229
230 src_str2 = src_str;
231 if (!src_str || *src_str == '\0')
232 src_str2 = ":0";
233
234 if (parse_host_port(saddr, src_str2) < 0)
235 goto fail;
236
237 free(str);
238 return(0);
239
240fail:
241 free(str);
242 return -1;
243}
244
245int parse_host_port(struct sockaddr_in *saddr, const char *str)
246{
247 char buf[512];
248 struct hostent *he;
249 const char *p, *r;
250 int port;
251
252 p = str;
253 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
254 return -1;
255 saddr->sin_family = AF_INET;
256 if (buf[0] == '\0') {
257 saddr->sin_addr.s_addr = 0;
258 } else {
cd390083 259 if (qemu_isdigit(buf[0])) {
63a01ef8
AL		 260 if (!inet_aton(buf, &saddr->sin_addr))
261 return -1;
262 } else {
263 if ((he = gethostbyname(buf)) == NULL)
264 return - 1;
265 saddr->sin_addr = *(struct in_addr *)he->h_addr;
266 }
267 }
268 port = strtol(p, (char **)&r, 0);
269 if (r == p)
270 return -1;
271 saddr->sin_port = htons(port);
272 return 0;
273}
274
7cb7434b
AL		 275void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
276{
277 snprintf(vc->info_str, sizeof(vc->info_str),
4dda4063
AL		 278 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
279 vc->model,
7cb7434b
AL		 280 macaddr[0], macaddr[1], macaddr[2],
281 macaddr[3], macaddr[4], macaddr[5]);
282}
283
76d32cba
GH		 284void qemu_macaddr_default_if_unset(MACAddr *macaddr)
285{
286 static int index = 0;
287 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
288
289 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
290 return;
291 macaddr->a[0] = 0x52;
292 macaddr->a[1] = 0x54;
293 macaddr->a[2] = 0x00;
294 macaddr->a[3] = 0x12;
295 macaddr->a[4] = 0x34;
296 macaddr->a[5] = 0x56 + index++;
297}
298
676cff29
AL		 299static char *assign_name(VLANClientState *vc1, const char *model)
300{
301 VLANState *vlan;
302 char buf[256];
303 int id = 0;
304
5610c3aa 305 QTAILQ_FOREACH(vlan, &vlans, next) {
676cff29
AL		 306 VLANClientState *vc;
307
5610c3aa
MM		 308 QTAILQ_FOREACH(vc, &vlan->clients, next) {
309 if (vc != vc1 && strcmp(vc->model, model) == 0) {
676cff29 310 id++;
5610c3aa
MM		 311 }
312 }
676cff29
AL		 313 }
314
315 snprintf(buf, sizeof(buf), "%s.%d", model, id);
316
02374aa0 317 return qemu_strdup(buf);
676cff29
AL		 318}
319
9a6ecb30 320static ssize_t qemu_deliver_packet(VLANClientState *sender,
c0b8e49c 321 unsigned flags,
9a6ecb30
MM		 322 const uint8_t *data,
323 size_t size,
324 void *opaque);
325static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
c0b8e49c 326 unsigned flags,
9a6ecb30
MM		 327 const struct iovec *iov,
328 int iovcnt,
329 void *opaque);
330
bb6e6364
MM		 331VLANClientState *qemu_new_vlan_client(net_client_type type,
332 VLANState *vlan,
283c7c63 333 VLANClientState *peer,
bf38c1a0 334 const char *model,
7a9f6e4a 335 const char *name,
cda9046b
MM		 336 NetCanReceive *can_receive,
337 NetReceive *receive,
70783b9c 338 NetReceive *receive_raw,
cda9046b 339 NetReceiveIOV *receive_iov,
b946a153 340 NetCleanup *cleanup,
63a01ef8
AL		 341 void *opaque)
342{
5610c3aa
MM		 343 VLANClientState *vc;
344
63a01ef8 345 vc = qemu_mallocz(sizeof(VLANClientState));
5610c3aa 346
bb6e6364 347 vc->type = type;
02374aa0 348 vc->model = qemu_strdup(model);
7a9f6e4a 349 if (name)
02374aa0 350 vc->name = qemu_strdup(name);
7a9f6e4a
AL		 351 else
352 vc->name = assign_name(vc, model);
cda9046b
MM		 353 vc->can_receive = can_receive;
354 vc->receive = receive;
70783b9c 355 vc->receive_raw = receive_raw;
cda9046b 356 vc->receive_iov = receive_iov;
b946a153 357 vc->cleanup = cleanup;
63a01ef8 358 vc->opaque = opaque;
5610c3aa 359
d80b9fc6 360 if (vlan) {
283c7c63 361 assert(!peer);
d80b9fc6
MM		 362 vc->vlan = vlan;
363 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
577c4af9 364 } else {
283c7c63
MM		 365 if (peer) {
366 vc->peer = peer;
367 peer->peer = vc;
368 }
577c4af9 369 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
9a6ecb30
MM		 370
371 vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
372 qemu_deliver_packet_iov,
373 vc);
d80b9fc6 374 }
63a01ef8 375
63a01ef8
AL		 376 return vc;
377}
378
379void qemu_del_vlan_client(VLANClientState *vc)
380{
d80b9fc6
MM		 381 if (vc->vlan) {
382 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
577c4af9 383 } else {
9a6ecb30
MM		 384 if (vc->send_queue) {
385 qemu_del_net_queue(vc->send_queue);
386 }
577c4af9 387 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
283c7c63
MM		 388 if (vc->peer) {
389 vc->peer->peer = NULL;
390 }
d80b9fc6 391 }
63a01ef8 392
5610c3aa
MM		 393 if (vc->cleanup) {
394 vc->cleanup(vc);
395 }
396
397 qemu_free(vc->name);
398 qemu_free(vc->model);
399 qemu_free(vc);
63a01ef8
AL		 400}
401
8b13c4a7
AL		 402VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
403{
5610c3aa 404 VLANClientState *vc;
8b13c4a7 405
5610c3aa
MM		 406 QTAILQ_FOREACH(vc, &vlan->clients, next) {
407 if (vc->opaque == opaque) {
408 return vc;
409 }
410 }
8b13c4a7
AL		 411
412 return NULL;
413}
414
1a609520
JK		 415static VLANClientState *
416qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
417 const char *client_str)
418{
419 VLANState *vlan;
420 VLANClientState *vc;
421
422 vlan = qemu_find_vlan(vlan_id, 0);
423 if (!vlan) {
424 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
425 return NULL;
426 }
427
5610c3aa 428 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1a609520
JK		 429 if (!strcmp(vc->name, client_str)) {
430 break;
431 }
432 }
433 if (!vc) {
434 monitor_printf(mon, "can't find device %s on VLAN %d\n",
435 client_str, vlan_id);
436 }
437
438 return vc;
439}
440
2e1e0641 441int qemu_can_send_packet(VLANClientState *sender)
63a01ef8 442{
2e1e0641 443 VLANState *vlan = sender->vlan;
63a01ef8
AL		 444 VLANClientState *vc;
445
9a6ecb30
MM		 446 if (sender->peer) {
447 if (!sender->peer->can_receive ||
448 sender->peer->can_receive(sender->peer)) {
449 return 1;
450 } else {
451 return 0;
452 }
453 }
454
d80b9fc6
MM		 455 if (!sender->vlan) {
456 return 1;
457 }
458
5610c3aa 459 QTAILQ_FOREACH(vc, &vlan->clients, next) {
2e1e0641
MM		 460 if (vc == sender) {
461 continue;
462 }
463
cda9046b 464 /* no can_receive() handler, they can always receive */
e3f5ec2b 465 if (!vc->can_receive || vc->can_receive(vc)) {
2e1e0641 466 return 1;
63a01ef8
AL		 467 }
468 }
469 return 0;
470}
471
9a6ecb30 472static ssize_t qemu_deliver_packet(VLANClientState *sender,
c0b8e49c 473 unsigned flags,
9a6ecb30
MM		 474 const uint8_t *data,
475 size_t size,
476 void *opaque)
477{
478 VLANClientState *vc = opaque;
479
480 if (vc->link_down) {
481 return size;
482 }
483
ca77d175
MM		 484 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw)
485 return vc->receive_raw(vc, data, size);
486 else
487 return vc->receive(vc, data, size);
9a6ecb30
MM		 488}
489
f7105843 490static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
c0b8e49c 491 unsigned flags,
f7105843
MM		 492 const uint8_t *buf,
493 size_t size,
494 void *opaque)
63a01ef8 495{
f7105843 496 VLANState *vlan = opaque;
63a01ef8 497 VLANClientState *vc;
3e021d40 498 int ret = -1;
63a01ef8 499
f7105843 500 QTAILQ_FOREACH(vc, &vlan->clients, next) {
3e021d40
MM		 501 ssize_t len;
502
503 if (vc == sender) {
504 continue;
764a4d1d 505 }
3e021d40
MM		 506
507 if (vc->link_down) {
508 ret = size;
509 continue;
510 }
511
ca77d175
MM		 512 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw)
513 len = vc->receive_raw(vc, buf, size);
514 else
515 len = vc->receive(vc, buf, size);
3e021d40
MM		 516
517 ret = (ret >= 0) ? ret : len;
764a4d1d 518 }
3e021d40
MM		 519
520 return ret;
764a4d1d
AL		 521}
522
8cad5516
MM		 523void qemu_purge_queued_packets(VLANClientState *vc)
524{
9a6ecb30
MM		 525 NetQueue *queue;
526
527 if (!vc->peer && !vc->vlan) {
d80b9fc6 528 return;
9a6ecb30 529 }
d80b9fc6 530
9a6ecb30
MM		 531 if (vc->peer) {
532 queue = vc->peer->send_queue;
533 } else {
534 queue = vc->vlan->send_queue;
535 }
536
537 qemu_net_queue_purge(queue, vc);
8cad5516
MM		 538}
539
f3b6c7fc 540void qemu_flush_queued_packets(VLANClientState *vc)
e94667b9 541{
9a6ecb30
MM		 542 NetQueue *queue;
543
544 if (vc->vlan) {
545 queue = vc->vlan->send_queue;
546 } else {
547 queue = vc->send_queue;
548 }
d80b9fc6 549
9a6ecb30 550 qemu_net_queue_flush(queue);
e94667b9
MM		 551}
552
ca77d175
MM		 553static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
554 unsigned flags,
555 const uint8_t *buf, int size,
556 NetPacketSent *sent_cb)
764a4d1d 557{
9a6ecb30 558 NetQueue *queue;
436e5e53 559
63a01ef8 560#ifdef DEBUG_NET
d80b9fc6 561 printf("qemu_send_packet_async:\n");
63a01ef8
AL		 562 hex_dump(stdout, buf, size);
563#endif
f3b6c7fc 564
9a6ecb30
MM		 565 if (sender->link_down || (!sender->peer && !sender->vlan)) {
566 return size;
567 }
568
569 if (sender->peer) {
570 queue = sender->peer->send_queue;
571 } else {
572 queue = sender->vlan->send_queue;
573 }
574
ca77d175
MM		 575 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
576}
577
578ssize_t qemu_send_packet_async(VLANClientState *sender,
579 const uint8_t *buf, int size,
580 NetPacketSent *sent_cb)
581{
582 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
583 buf, size, sent_cb);
f3b6c7fc
MM		 584}
585
586void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
587{
588 qemu_send_packet_async(vc, buf, size, NULL);
63a01ef8
AL		 589}
590
ca77d175
MM		 591ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
592{
593 return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
594 buf, size, NULL);
595}
596
fbe78f4f
AL		 597static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
598 int iovcnt)
599{
600 uint8_t buffer[4096];
601 size_t offset = 0;
602 int i;
603
604 for (i = 0; i < iovcnt; i++) {
605 size_t len;
606
607 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
608 memcpy(buffer + offset, iov[i].iov_base, len);
609 offset += len;
610 }
611
f3b6c7fc 612 return vc->receive(vc, buffer, offset);
fbe78f4f
AL		 613}
614
e0e7877a
AL		 615static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
616{
617 size_t offset = 0;
618 int i;
619
620 for (i = 0; i < iovcnt; i++)
621 offset += iov[i].iov_len;
622 return offset;
623}
624
9a6ecb30 625static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
c0b8e49c 626 unsigned flags,
9a6ecb30
MM		 627 const struct iovec *iov,
628 int iovcnt,
629 void *opaque)
630{
631 VLANClientState *vc = opaque;
632
633 if (vc->link_down) {
634 return calc_iov_length(iov, iovcnt);
635 }
636
637 if (vc->receive_iov) {
638 return vc->receive_iov(vc, iov, iovcnt);
639 } else {
640 return vc_sendv_compat(vc, iov, iovcnt);
641 }
642}
643
f7105843 644static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
c0b8e49c 645 unsigned flags,
f7105843
MM		 646 const struct iovec *iov,
647 int iovcnt,
648 void *opaque)
fbe78f4f 649{
f7105843 650 VLANState *vlan = opaque;
fbe78f4f 651 VLANClientState *vc;
f7105843 652 ssize_t ret = -1;
e94667b9 653
f7105843 654 QTAILQ_FOREACH(vc, &vlan->clients, next) {
e94667b9
MM		 655 ssize_t len;
656
657 if (vc == sender) {
658 continue;
659 }
660
661 if (vc->link_down) {
662 ret = calc_iov_length(iov, iovcnt);
663 continue;
664 }
665
ca77d175
MM		 666 assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
667
e94667b9
MM		 668 if (vc->receive_iov) {
669 len = vc->receive_iov(vc, iov, iovcnt);
670 } else {
671 len = vc_sendv_compat(vc, iov, iovcnt);
672 }
673
674 ret = (ret >= 0) ? ret : len;
675 }
676
e94667b9
MM		 677 return ret;
678}
679
f3b6c7fc
MM		 680ssize_t qemu_sendv_packet_async(VLANClientState *sender,
681 const struct iovec *iov, int iovcnt,
682 NetPacketSent *sent_cb)
e94667b9 683{
9a6ecb30
MM		 684 NetQueue *queue;
685
686 if (sender->link_down || (!sender->peer && !sender->vlan)) {
e94667b9
MM		 687 return calc_iov_length(iov, iovcnt);
688 }
689
9a6ecb30
MM		 690 if (sender->peer) {
691 queue = sender->peer->send_queue;
692 } else {
693 queue = sender->vlan->send_queue;
694 }
695
c0b8e49c
MM		 696 return qemu_net_queue_send_iov(queue, sender,
697 QEMU_NET_PACKET_FLAG_NONE,
698 iov, iovcnt, sent_cb);
fbe78f4f
AL		 699}
700
f3b6c7fc
MM		 701ssize_t
702qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
703{
704 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
705}
706
63a01ef8
AL		 707#if defined(CONFIG_SLIRP)
708
709/* slirp network adapter */
710
c92ef6a2
JK		 711#define SLIRP_CFG_HOSTFWD 1
712#define SLIRP_CFG_LEGACY 2
ad196a9d 713
b8e8af38
JK		 714struct slirp_config_str {
715 struct slirp_config_str *next;
ad196a9d
JK		 716 int flags;
717 char str[1024];
c92ef6a2 718 int legacy_format;
b8e8af38
JK		 719};
720
9f8bd042 721typedef struct SlirpState {
72cf2d4f 722 QTAILQ_ENTRY(SlirpState) entry;
9f8bd042
JK		 723 VLANClientState *vc;
724 Slirp *slirp;
28432466
JK		 725#ifndef _WIN32
726 char smb_dir[128];
727#endif
9f8bd042
JK		 728} SlirpState;
729
ad196a9d
JK		 730static struct slirp_config_str *slirp_configs;
731const char *legacy_tftp_prefix;
732const char *legacy_bootp_filename;
72cf2d4f
BS		 733static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
734 QTAILQ_HEAD_INITIALIZER(slirp_stacks);
63a01ef8 735
fb12577c 736static int slirp_hostfwd(SlirpState *s, const char *redir_str,
0752706d 737 int legacy_format);
fb12577c 738static int slirp_guestfwd(SlirpState *s, const char *config_str,
3c6a0580 739 int legacy_format);
ad196a9d 740
c5b76b38 741#ifndef _WIN32
ad196a9d
JK		 742static const char *legacy_smb_export;
743
fb12577c 744static int slirp_smb(SlirpState *s, const char *exported_dir,
0752706d 745 struct in_addr vserver_addr);
28432466
JK		 746static void slirp_smb_cleanup(SlirpState *s);
747#else
748static inline void slirp_smb_cleanup(SlirpState *s) { }
c5b76b38 749#endif
b8e8af38 750
9f8bd042 751int slirp_can_output(void *opaque)
63a01ef8 752{
9f8bd042
JK		 753 SlirpState *s = opaque;
754
755 return qemu_can_send_packet(s->vc);
63a01ef8
AL		 756}
757
9f8bd042 758void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
63a01ef8 759{
9f8bd042
JK		 760 SlirpState *s = opaque;
761
63a01ef8
AL		 762#ifdef DEBUG_SLIRP
763 printf("slirp output:\n");
764 hex_dump(stdout, pkt, pkt_len);
765#endif
9f8bd042 766 qemu_send_packet(s->vc, pkt, pkt_len);
63a01ef8
AL		 767}
768
4f1c942b 769static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 770{
9f8bd042
JK		 771 SlirpState *s = vc->opaque;
772
63a01ef8
AL		 773#ifdef DEBUG_SLIRP
774 printf("slirp input:\n");
775 hex_dump(stdout, buf, size);
776#endif
9f8bd042 777 slirp_input(s->slirp, buf, size);
4f1c942b 778 return size;
63a01ef8
AL		 779}
780
8d6249a7
AL		 781static void net_slirp_cleanup(VLANClientState *vc)
782{
ad0d8c4c
JK		 783 SlirpState *s = vc->opaque;
784
785 slirp_cleanup(s->slirp);
28432466 786 slirp_smb_cleanup(s);
72cf2d4f 787 QTAILQ_REMOVE(&slirp_stacks, s, entry);
ad0d8c4c 788 qemu_free(s);
8d6249a7
AL		 789}
790
fb12577c 791static int net_slirp_init(VLANState *vlan, const char *model,
c92ef6a2
JK		 792 const char *name, int restricted,
793 const char *vnetwork, const char *vhost,
794 const char *vhostname, const char *tftp_export,
795 const char *bootfile, const char *vdhcp_start,
796 const char *vnameserver, const char *smb_export,
797 const char *vsmbserver)
63a01ef8 798{
ad0d8c4c 799 /* default settings according to historic slirp */
8389e7f4
AL		 800 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
801 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
ad0d8c4c
JK		 802 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
803 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
804 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
c92ef6a2 805#ifndef _WIN32
ad0d8c4c 806 struct in_addr smbsrv = { .s_addr = 0 };
c92ef6a2 807#endif
ad0d8c4c
JK		 808 SlirpState *s;
809 char buf[20];
810 uint32_t addr;
811 int shift;
812 char *end;
3a179c66 813 struct slirp_config_str *config;
ad0d8c4c
JK		 814
815 if (!tftp_export) {
816 tftp_export = legacy_tftp_prefix;
817 }
818 if (!bootfile) {
819 bootfile = legacy_bootp_filename;
820 }
c92ef6a2 821
ad0d8c4c
JK		 822 if (vnetwork) {
823 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
824 if (!inet_aton(vnetwork, &net)) {
825 return -1;
826 }
827 addr = ntohl(net.s_addr);
828 if (!(addr & 0x80000000)) {
829 mask.s_addr = htonl(0xff000000); /* class A */
830 } else if ((addr & 0xfff00000) == 0xac100000) {
831 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
832 } else if ((addr & 0xc0000000) == 0x80000000) {
833 mask.s_addr = htonl(0xffff0000); /* class B */
834 } else if ((addr & 0xffff0000) == 0xc0a80000) {
835 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
836 } else if ((addr & 0xffff0000) == 0xc6120000) {
837 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
838 } else if ((addr & 0xe0000000) == 0xe0000000) {
839 mask.s_addr = htonl(0xffffff00); /* class C */
c92ef6a2 840 } else {
ad0d8c4c
JK		 841 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
842 }
843 } else {
844 if (!inet_aton(buf, &net)) {
845 return -1;
846 }
847 shift = strtol(vnetwork, &end, 10);
848 if (*end != '\0') {
849 if (!inet_aton(vnetwork, &mask)) {
c92ef6a2 850 return -1;
c92ef6a2 851 }
ad0d8c4c
JK		 852 } else if (shift < 4 || shift > 32) {
853 return -1;
854 } else {
855 mask.s_addr = htonl(0xffffffff << (32 - shift));
c92ef6a2 856 }
c92ef6a2 857 }
ad0d8c4c
JK		 858 net.s_addr &= mask.s_addr;
859 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
860 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
861 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
862 }
c92ef6a2 863
ad0d8c4c
JK		 864 if (vhost && !inet_aton(vhost, &host)) {
865 return -1;
866 }
867 if ((host.s_addr & mask.s_addr) != net.s_addr) {
868 return -1;
869 }
c92ef6a2 870
ad0d8c4c
JK		 871 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
872 return -1;
873 }
874 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
875 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
876 return -1;
877 }
c92ef6a2 878
ad0d8c4c
JK		 879 if (vnameserver && !inet_aton(vnameserver, &dns)) {
880 return -1;
881 }
882 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
883 dns.s_addr == host.s_addr) {
884 return -1;
885 }
c92ef6a2
JK		 886
887#ifndef _WIN32
ad0d8c4c
JK		 888 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
889 return -1;
890 }
c92ef6a2
JK		 891#endif
892
ad0d8c4c
JK		 893 s = qemu_mallocz(sizeof(SlirpState));
894 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
895 tftp_export, bootfile, dhcp, dns, s);
72cf2d4f 896 QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
b8e8af38 897
3a179c66 898 for (config = slirp_configs; config; config = config->next) {
ad0d8c4c 899 if (config->flags & SLIRP_CFG_HOSTFWD) {
fb12577c 900 if (slirp_hostfwd(s, config->str,
0752706d
MA		 901 config->flags & SLIRP_CFG_LEGACY) < 0)
902 return -1;
ad0d8c4c 903 } else {
fb12577c 904 if (slirp_guestfwd(s, config->str,
0752706d
MA		 905 config->flags & SLIRP_CFG_LEGACY) < 0)
906 return -1;
b8e8af38 907 }
ad0d8c4c 908 }
b8e8af38 909#ifndef _WIN32
ad0d8c4c
JK		 910 if (!smb_export) {
911 smb_export = legacy_smb_export;
912 }
913 if (smb_export) {
fb12577c 914 if (slirp_smb(s, smb_export, smbsrv) < 0)
0752706d 915 return -1;
63a01ef8 916 }
ad0d8c4c 917#endif
b8e8af38 918
bb6e6364
MM		 919 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SLIRP,
920 vlan, NULL, model, name, NULL,
70783b9c 921 slirp_receive, NULL, NULL,
9f8bd042 922 net_slirp_cleanup, s);
fc57bc57
JK		 923 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
924 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
63a01ef8
AL		 925 return 0;
926}
927
f13b572c
JK		 928static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
929 const char *stack)
930{
931 VLANClientState *vc;
932
933 if (vlan) {
934 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
935 if (!vc) {
936 return NULL;
937 }
938 if (strcmp(vc->model, "user")) {
939 monitor_printf(mon, "invalid device specified\n");
940 return NULL;
941 }
942 return vc->opaque;
943 } else {
72cf2d4f 944 if (QTAILQ_EMPTY(&slirp_stacks)) {
f13b572c
JK		 945 monitor_printf(mon, "user mode network stack not in use\n");
946 return NULL;
947 }
72cf2d4f 948 return QTAILQ_FIRST(&slirp_stacks);
f13b572c
JK		 949 }
950}
951
1d4daa91 952void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
c1261d8d 953{
3c6a0580 954 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c1261d8d
AG		 955 int host_port;
956 char buf[256] = "";
f13b572c
JK		 957 const char *src_str, *p;
958 SlirpState *s;
c1261d8d 959 int is_udp = 0;
9c12a6f2 960 int err;
1d4daa91
LC		 961 const char *arg1 = qdict_get_str(qdict, "arg1");
962 const char *arg2 = qdict_get_try_str(qdict, "arg2");
963 const char *arg3 = qdict_get_try_str(qdict, "arg3");
c1261d8d 964
f13b572c
JK		 965 if (arg2) {
966 s = slirp_lookup(mon, arg1, arg2);
967 src_str = arg3;
968 } else {
969 s = slirp_lookup(mon, NULL, NULL);
970 src_str = arg1;
971 }
972 if (!s) {
c1261d8d 973 return;
f3546deb 974 }
c1261d8d 975
3c6a0580 976 if (!src_str || !src_str[0])
c1261d8d
AG		 977 goto fail_syntax;
978
f13b572c 979 p = src_str;
c1261d8d
AG		 980 get_str_sep(buf, sizeof(buf), &p, ':');
981
982 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
983 is_udp = 0;
984 } else if (!strcmp(buf, "udp")) {
985 is_udp = 1;
986 } else {
987 goto fail_syntax;
988 }
989
3c6a0580
JK		 990 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
991 goto fail_syntax;
992 }
993 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
994 goto fail_syntax;
995 }
996
c1261d8d
AG		 997 host_port = atoi(p);
998
72cf2d4f 999 err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
9f8bd042 1000 host_addr, host_port);
c1261d8d 1001
9c12a6f2
JK		 1002 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
1003 err ? "removed" : "not found");
c1261d8d
AG		 1004 return;
1005
1006 fail_syntax:
1007 monitor_printf(mon, "invalid format\n");
1008}
1009
fb12577c 1010static int slirp_hostfwd(SlirpState *s, const char *redir_str,
0752706d 1011 int legacy_format)
63a01ef8 1012{
3c6a0580 1013 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c92ef6a2 1014 struct in_addr guest_addr = { .s_addr = 0 };
63a01ef8 1015 int host_port, guest_port;
b8e8af38 1016 const char *p;
c92ef6a2 1017 char buf[256];
b8e8af38 1018 int is_udp;
c92ef6a2 1019 char *end;
1c6ed9f3 1020
63a01ef8 1021 p = redir_str;
f13b572c 1022 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 1023 goto fail_syntax;
b8e8af38 1024 }
d4ebe193 1025 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
63a01ef8
AL		 1026 is_udp = 0;
1027 } else if (!strcmp(buf, "udp")) {
1028 is_udp = 1;
1029 } else {
d4ebe193 1030 goto fail_syntax;
63a01ef8
AL		 1031 }
1032
3c6a0580
JK		 1033 if (!legacy_format) {
1034 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1035 goto fail_syntax;
1036 }
1037 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
1038 goto fail_syntax;
1039 }
1040 }
1041
1042 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
d4ebe193 1043 goto fail_syntax;
b8e8af38 1044 }
c92ef6a2
JK		 1045 host_port = strtol(buf, &end, 0);
1046 if (*end != '\0' || host_port < 1 || host_port > 65535) {
d4ebe193 1047 goto fail_syntax;
b8e8af38 1048 }
63a01ef8 1049
b8e8af38 1050 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 1051 goto fail_syntax;
b8e8af38 1052 }
c92ef6a2 1053 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
d4ebe193 1054 goto fail_syntax;
b8e8af38 1055 }
63a01ef8 1056
c92ef6a2
JK		 1057 guest_port = strtol(p, &end, 0);
1058 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
d4ebe193 1059 goto fail_syntax;
b8e8af38 1060 }
63a01ef8 1061
9f8bd042
JK		 1062 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1063 guest_port) < 0) {
fb12577c
MA		 1064 qemu_error("could not set up host forwarding rule '%s'\n",
1065 redir_str);
0752706d 1066 return -1;
63a01ef8 1067 }
0752706d 1068 return 0;
d4ebe193
AL		 1069
1070 fail_syntax:
fb12577c 1071 qemu_error("invalid host forwarding rule '%s'\n", redir_str);
0752706d 1072 return -1;
63a01ef8
AL		 1073}
1074
1d4daa91 1075void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
b8e8af38 1076{
f13b572c
JK		 1077 const char *redir_str;
1078 SlirpState *s;
1d4daa91
LC		 1079 const char *arg1 = qdict_get_str(qdict, "arg1");
1080 const char *arg2 = qdict_get_try_str(qdict, "arg2");
1081 const char *arg3 = qdict_get_try_str(qdict, "arg3");
f13b572c
JK		 1082
1083 if (arg2) {
1084 s = slirp_lookup(mon, arg1, arg2);
1085 redir_str = arg3;
1086 } else {
1087 s = slirp_lookup(mon, NULL, NULL);
1088 redir_str = arg1;
1089 }
1090 if (s) {
fb12577c 1091 slirp_hostfwd(s, redir_str, 0);
b8e8af38
JK		 1092 }
1093
f3546deb
JK		 1094}
1095
0752706d 1096int net_slirp_redir(const char *redir_str)
f3546deb
JK		 1097{
1098 struct slirp_config_str *config;
1099
72cf2d4f 1100 if (QTAILQ_EMPTY(&slirp_stacks)) {
f3546deb
JK		 1101 config = qemu_malloc(sizeof(*config));
1102 pstrcpy(config->str, sizeof(config->str), redir_str);
3c6a0580 1103 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
f3546deb
JK		 1104 config->next = slirp_configs;
1105 slirp_configs = config;
0752706d 1106 return 0;
b8e8af38
JK		 1107 }
1108
fb12577c 1109 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
b8e8af38
JK		 1110}
1111
63a01ef8
AL		 1112#ifndef _WIN32
1113
63a01ef8 1114/* automatic user mode samba server configuration */
28432466 1115static void slirp_smb_cleanup(SlirpState *s)
63a01ef8 1116{
28432466 1117 char cmd[128];
09c18925 1118
28432466
JK		 1119 if (s->smb_dir[0] != '\0') {
1120 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1121 system(cmd);
1122 s->smb_dir[0] = '\0';
1123 }
63a01ef8
AL		 1124}
1125
fb12577c 1126static int slirp_smb(SlirpState* s, const char *exported_dir,
0752706d 1127 struct in_addr vserver_addr)
63a01ef8 1128{
28432466
JK		 1129 static int instance;
1130 char smb_conf[128];
1131 char smb_cmdline[128];
63a01ef8
AL		 1132 FILE *f;
1133
28432466
JK		 1134 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1135 (long)getpid(), instance++);
1136 if (mkdir(s->smb_dir, 0700) < 0) {
fb12577c 1137 qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
0752706d 1138 return -1;
63a01ef8 1139 }
28432466 1140 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
63a01ef8
AL		 1141
1142 f = fopen(smb_conf, "w");
1143 if (!f) {
28432466 1144 slirp_smb_cleanup(s);
fb12577c
MA		 1145 qemu_error("could not create samba server configuration file '%s'\n",
1146 smb_conf);
0752706d 1147 return -1;
63a01ef8
AL		 1148 }
1149 fprintf(f,
1150 "[global]\n"
1151 "private dir=%s\n"
1152 "smb ports=0\n"
1153 "socket address=127.0.0.1\n"
1154 "pid directory=%s\n"
1155 "lock directory=%s\n"
1156 "log file=%s/log.smbd\n"
1157 "smb passwd file=%s/smbpasswd\n"
1158 "security = share\n"
1159 "[qemu]\n"
1160 "path=%s\n"
1161 "read only=no\n"
1162 "guest ok=yes\n",
28432466
JK		 1163 s->smb_dir,
1164 s->smb_dir,
1165 s->smb_dir,
1166 s->smb_dir,
1167 s->smb_dir,
63a01ef8
AL		 1168 exported_dir
1169 );
1170 fclose(f);
63a01ef8
AL		 1171
1172 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1173 SMBD_COMMAND, smb_conf);
1174
bb53fc53 1175 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
28432466 1176 slirp_smb_cleanup(s);
fb12577c 1177 qemu_error("conflicting/invalid smbserver address\n");
0752706d 1178 return -1;
c92ef6a2 1179 }
0752706d 1180 return 0;
63a01ef8
AL		 1181}
1182
ad196a9d 1183/* automatic user mode samba server configuration (legacy interface) */
0752706d 1184int net_slirp_smb(const char *exported_dir)
b8e8af38 1185{
c92ef6a2
JK		 1186 struct in_addr vserver_addr = { .s_addr = 0 };
1187
ad196a9d 1188 if (legacy_smb_export) {
b8e8af38 1189 fprintf(stderr, "-smb given twice\n");
0752706d 1190 return -1;
b8e8af38 1191 }
ad196a9d 1192 legacy_smb_export = exported_dir;
72cf2d4f 1193 if (!QTAILQ_EMPTY(&slirp_stacks)) {
fb12577c 1194 return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
0752706d 1195 vserver_addr);
b8e8af38 1196 }
0752706d 1197 return 0;
b8e8af38
JK		 1198}
1199
63a01ef8 1200#endif /* !defined(_WIN32) */
b8e8af38 1201
c92ef6a2 1202struct GuestFwd {
8ca9217d 1203 CharDriverState *hd;
c92ef6a2 1204 struct in_addr server;
8ca9217d 1205 int port;
9f8bd042 1206 Slirp *slirp;
511d2b14 1207};
8ca9217d 1208
c92ef6a2 1209static int guestfwd_can_read(void *opaque)
8ca9217d 1210{
c92ef6a2 1211 struct GuestFwd *fwd = opaque;
9f8bd042 1212 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
8ca9217d
AL		 1213}
1214
c92ef6a2 1215static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
8ca9217d 1216{
c92ef6a2 1217 struct GuestFwd *fwd = opaque;
9f8bd042 1218 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
8ca9217d
AL		 1219}
1220
fb12577c 1221static int slirp_guestfwd(SlirpState *s, const char *config_str,
0752706d 1222 int legacy_format)
ad196a9d 1223{
c92ef6a2
JK		 1224 struct in_addr server = { .s_addr = 0 };
1225 struct GuestFwd *fwd;
1226 const char *p;
1227 char buf[128];
1228 char *end;
ad196a9d
JK		 1229 int port;
1230
c92ef6a2
JK		 1231 p = config_str;
1232 if (legacy_format) {
1233 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1234 goto fail_syntax;
1235 }
1236 } else {
1237 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1238 goto fail_syntax;
1239 }
1240 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1241 goto fail_syntax;
1242 }
1243 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1244 goto fail_syntax;
1245 }
1246 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1247 goto fail_syntax;
1248 }
1249 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1250 goto fail_syntax;
1251 }
1252 }
1253 port = strtol(buf, &end, 10);
1254 if (*end != '\0' || port < 1 || port > 65535) {
1255 goto fail_syntax;
ad196a9d 1256 }
ad196a9d 1257
c92ef6a2
JK		 1258 fwd = qemu_malloc(sizeof(struct GuestFwd));
1259 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1260 fwd->hd = qemu_chr_open(buf, p, NULL);
1261 if (!fwd->hd) {
fb12577c 1262 qemu_error("could not open guest forwarding device '%s'\n", buf);
c92ef6a2 1263 qemu_free(fwd);
0752706d 1264 return -1;
ad196a9d 1265 }
ad196a9d 1266
bb53fc53 1267 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
fb12577c
MA		 1268 qemu_error("conflicting/invalid host:port in guest forwarding "
1269 "rule '%s'\n", config_str);
c92ef6a2 1270 qemu_free(fwd);
0752706d 1271 return -1;
c92ef6a2 1272 }
bb53fc53
JK		 1273 fwd->server = server;
1274 fwd->port = port;
1275 fwd->slirp = s->slirp;
1276
c92ef6a2
JK		 1277 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1278 NULL, fwd);
0752706d 1279 return 0;
c92ef6a2
JK		 1280
1281 fail_syntax:
fb12577c 1282 qemu_error("invalid guest forwarding rule '%s'\n", config_str);
0752706d 1283 return -1;
ad196a9d
JK		 1284}
1285
6dbe553f
JK		 1286void do_info_usernet(Monitor *mon)
1287{
b1c99fcd 1288 SlirpState *s;
9f8bd042 1289
72cf2d4f 1290 QTAILQ_FOREACH(s, &slirp_stacks, entry) {
b1c99fcd
JK		 1291 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1292 slirp_connection_info(s->slirp, mon);
9f8bd042 1293 }
6dbe553f
JK		 1294}
1295
63a01ef8
AL		 1296#endif /* CONFIG_SLIRP */
1297
a8ed73f7 1298#if !defined(_WIN32) && !defined(_AIX)
63a01ef8 1299
8e0f8e5b
MM		 1300/* Maximum GSO packet size (64k) plus plenty of room for
1301 * the ethernet and virtio_net headers
1302 */
1303#define TAP_BUFSIZE (4096 + 65536)
1304
63a01ef8
AL		 1305typedef struct TAPState {
1306 VLANClientState *vc;
1307 int fd;
1308 char down_script[1024];
973cbd37 1309 char down_script_arg[128];
8e0f8e5b 1310 uint8_t buf[TAP_BUFSIZE];
b664e367 1311 unsigned int read_poll : 1;
1f7babf6 1312 unsigned int write_poll : 1;
8e0f8e5b 1313 unsigned int has_vnet_hdr : 1;
24e32363 1314 unsigned int using_vnet_hdr : 1;
6c9f58ba 1315 unsigned int has_ufo: 1;
63a01ef8
AL		 1316} TAPState;
1317
b946a153
AL		 1318static int launch_script(const char *setup_script, const char *ifname, int fd);
1319
b664e367
MM		 1320static int tap_can_send(void *opaque);
1321static void tap_send(void *opaque);
1f7babf6 1322static void tap_writable(void *opaque);
b664e367
MM		 1323
1324static void tap_update_fd_handler(TAPState *s)
1325{
1326 qemu_set_fd_handler2(s->fd,
1327 s->read_poll ? tap_can_send : NULL,
1328 s->read_poll ? tap_send : NULL,
1f7babf6 1329 s->write_poll ? tap_writable : NULL,
b664e367
MM		 1330 s);
1331}
1332
1333static void tap_read_poll(TAPState *s, int enable)
1334{
1335 s->read_poll = !!enable;
1336 tap_update_fd_handler(s);
1337}
1338
1f7babf6
MM		 1339static void tap_write_poll(TAPState *s, int enable)
1340{
1341 s->write_poll = !!enable;
1342 tap_update_fd_handler(s);
1343}
1344
1345static void tap_writable(void *opaque)
1346{
1347 TAPState *s = opaque;
1348
1349 tap_write_poll(s, 0);
1350
1351 qemu_flush_queued_packets(s->vc);
1352}
1353
38c75be3 1354static ssize_t tap_write_packet(TAPState *s, const struct iovec *iov, int iovcnt)
b535b7b2 1355{
b535b7b2
AL		 1356 ssize_t len;
1357
1358 do {
1359 len = writev(s->fd, iov, iovcnt);
1f7babf6
MM		 1360 } while (len == -1 && errno == EINTR);
1361
1362 if (len == -1 && errno == EAGAIN) {
1363 tap_write_poll(s, 1);
1364 return 0;
1365 }
b535b7b2
AL		 1366
1367 return len;
1368}
b535b7b2 1369
38c75be3
MM		 1370static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1371 int iovcnt)
1372{
1373 TAPState *s = vc->opaque;
8e0f8e5b
MM		 1374 const struct iovec *iovp = iov;
1375 struct iovec iov_copy[iovcnt + 1];
1376 struct virtio_net_hdr hdr = { 0, };
38c75be3 1377
24e32363 1378 if (s->has_vnet_hdr && !s->using_vnet_hdr) {
8e0f8e5b
MM		 1379 iov_copy[0].iov_base = &hdr;
1380 iov_copy[0].iov_len = sizeof(hdr);
1381 memcpy(&iov_copy[1], iov, iovcnt * sizeof(*iov));
1382 iovp = iov_copy;
1383 iovcnt++;
1384 }
1385
1386 return tap_write_packet(s, iovp, iovcnt);
38c75be3
MM		 1387}
1388
2596774a 1389static ssize_t tap_receive_raw(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1390{
e3f5ec2b 1391 TAPState *s = vc->opaque;
8e0f8e5b 1392 struct iovec iov[2];
38c75be3 1393 int iovcnt = 0;
8e0f8e5b
MM		 1394 struct virtio_net_hdr hdr = { 0, };
1395
2596774a 1396 if (s->has_vnet_hdr) {
8e0f8e5b
MM		 1397 iov[iovcnt].iov_base = &hdr;
1398 iov[iovcnt].iov_len = sizeof(hdr);
1399 iovcnt++;
1400 }
4f1c942b 1401
38c75be3
MM		 1402 iov[iovcnt].iov_base = (char *)buf;
1403 iov[iovcnt].iov_len = size;
1404 iovcnt++;
4f1c942b 1405
38c75be3 1406 return tap_write_packet(s, iov, iovcnt);
63a01ef8
AL		 1407}
1408
2596774a
MM		 1409static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1410{
1411 TAPState *s = vc->opaque;
1412 struct iovec iov[1];
1413
1414 if (s->has_vnet_hdr && !s->using_vnet_hdr) {
1415 return tap_receive_raw(vc, buf, size);
1416 }
1417
1418 iov[0].iov_base = (char *)buf;
1419 iov[0].iov_len = size;
1420
1421 return tap_write_packet(s, iov, 1);
1422}
1423
3471b757
MM		 1424static int tap_can_send(void *opaque)
1425{
1426 TAPState *s = opaque;
1427
1428 return qemu_can_send_packet(s->vc);
1429}
1430
63a01ef8 1431#ifdef __sun__
5a6d8815
MM		 1432static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1433{
63a01ef8
AL		 1434 struct strbuf sbuf;
1435 int f = 0;
5a6d8815
MM		 1436
1437 sbuf.maxlen = maxlen;
3f4cb3d3 1438 sbuf.buf = (char *)buf;
5a6d8815
MM		 1439
1440 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1441}
63a01ef8 1442#else
5a6d8815
MM		 1443static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1444{
1445 return read(tapfd, buf, maxlen);
1446}
63a01ef8 1447#endif
5a6d8815 1448
783527a9 1449static void tap_send_completed(VLANClientState *vc, ssize_t len)
e19eb224
MM		 1450{
1451 TAPState *s = vc->opaque;
b664e367 1452 tap_read_poll(s, 1);
e19eb224
MM		 1453}
1454
5a6d8815
MM		 1455static void tap_send(void *opaque)
1456{
1457 TAPState *s = opaque;
5a6d8815
MM		 1458 int size;
1459
e19eb224 1460 do {
8e0f8e5b
MM		 1461 uint8_t *buf = s->buf;
1462
e19eb224
MM		 1463 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1464 if (size <= 0) {
1465 break;
1466 }
1467
24e32363 1468 if (s->has_vnet_hdr && !s->using_vnet_hdr) {
8e0f8e5b
MM		 1469 buf += sizeof(struct virtio_net_hdr);
1470 size -= sizeof(struct virtio_net_hdr);
1471 }
1472
1473 size = qemu_send_packet_async(s->vc, buf, size, tap_send_completed);
e19eb224 1474 if (size == 0) {
b664e367 1475 tap_read_poll(s, 0);
e19eb224
MM		 1476 }
1477 } while (size > 0);
63a01ef8
AL		 1478}
1479
fc5b81d1
MM		 1480/* sndbuf should be set to a value lower than the tx queue
1481 * capacity of any destination network interface.
1482 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1483 * a good default, given a 1500 byte MTU.
1484 */
1485#define TAP_DEFAULT_SNDBUF 1024*1024
1486
8a1c5235 1487static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
fc5b81d1 1488{
8a1c5235 1489 int sndbuf;
fc5b81d1 1490
8a1c5235 1491 sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF);
fc5b81d1
MM		 1492 if (!sndbuf) {
1493 sndbuf = INT_MAX;
1494 }
1495
8a1c5235 1496 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) {
fb12577c 1497 qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno));
0752706d 1498 return -1;
0df0ff6d 1499 }
0752706d 1500 return 0;
fc5b81d1 1501}
0df0ff6d 1502
6c9f58ba
SS		 1503int tap_has_ufo(VLANClientState *vc)
1504{
1505 TAPState *s = vc->opaque;
1506
1507 assert(vc->type == NET_CLIENT_TYPE_TAP);
1508
1509 return s->has_ufo;
1510}
1511
24e32363
MM		 1512int tap_has_vnet_hdr(VLANClientState *vc)
1513{
1514 TAPState *s = vc->opaque;
1515
1516 assert(vc->type == NET_CLIENT_TYPE_TAP);
1517
1518 return s->has_vnet_hdr;
1519}
1520
1521void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr)
1522{
1523 TAPState *s = vc->opaque;
1524
1525 using_vnet_hdr = using_vnet_hdr != 0;
1526
1527 assert(vc->type == NET_CLIENT_TYPE_TAP);
1528 assert(s->has_vnet_hdr == using_vnet_hdr);
1529
1530 s->using_vnet_hdr = using_vnet_hdr;
1531}
1532
8e0f8e5b
MM		 1533static int tap_probe_vnet_hdr(int fd)
1534{
1535 struct ifreq ifr;
1536
1537 if (ioctl(fd, TUNGETIFF, &ifr) != 0) {
1538 qemu_error("TUNGETIFF ioctl() failed: %s\n", strerror(errno));
1539 return 0;
1540 }
1541
1542 return ifr.ifr_flags & IFF_VNET_HDR;
1543}
1544
6c9f58ba
SS		 1545void tap_set_offload(VLANClientState *vc, int csum, int tso4,
1546 int tso6, int ecn, int ufo)
b1c28b46
MM		 1547{
1548 TAPState *s = vc->opaque;
1549 unsigned int offload = 0;
1550
1551 if (csum) {
1552 offload |= TUN_F_CSUM;
1553 if (tso4)
1554 offload |= TUN_F_TSO4;
1555 if (tso6)
1556 offload |= TUN_F_TSO6;
1557 if ((tso4 || tso6) && ecn)
1558 offload |= TUN_F_TSO_ECN;
6c9f58ba
SS		 1559 if (ufo)
1560 offload |= TUN_F_UFO;
b1c28b46
MM		 1561 }
1562
1563 if (ioctl(s->fd, TUNSETOFFLOAD, offload) != 0) {
6c9f58ba
SS		 1564 offload &= ~TUN_F_UFO;
1565 if (ioctl(s->fd, TUNSETOFFLOAD, offload) != 0) {
1566 fprintf(stderr, "TUNSETOFFLOAD ioctl() failed: %s\n",
1567 strerror(errno));
1568 }
b1c28b46
MM		 1569 }
1570}
1571
b946a153
AL		 1572static void tap_cleanup(VLANClientState *vc)
1573{
1574 TAPState *s = vc->opaque;
1575
b9adce2c
MM		 1576 qemu_purge_queued_packets(vc);
1577
b946a153
AL		 1578 if (s->down_script[0])
1579 launch_script(s->down_script, s->down_script_arg, s->fd);
1580
b664e367 1581 tap_read_poll(s, 0);
1f7babf6 1582 tap_write_poll(s, 0);
b946a153
AL		 1583 close(s->fd);
1584 qemu_free(s);
1585}
1586
63a01ef8
AL		 1587/* fd support */
1588
7a9f6e4a
AL		 1589static TAPState *net_tap_fd_init(VLANState *vlan,
1590 const char *model,
1591 const char *name,
8e0f8e5b
MM		 1592 int fd,
1593 int vnet_hdr)
63a01ef8
AL		 1594{
1595 TAPState *s;
6c9f58ba 1596 unsigned int offload;
63a01ef8
AL		 1597
1598 s = qemu_mallocz(sizeof(TAPState));
63a01ef8 1599 s->fd = fd;
8e0f8e5b 1600 s->has_vnet_hdr = vnet_hdr != 0;
24e32363 1601 s->using_vnet_hdr = 0;
bb6e6364
MM		 1602 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_TAP,
1603 vlan, NULL, model, name, NULL,
2596774a
MM		 1604 tap_receive, tap_receive_raw,
1605 tap_receive_iov, tap_cleanup, s);
6c9f58ba
SS		 1606 s->has_ufo = 0;
1607 /* Check if tap supports UFO */
1608 offload = TUN_F_CSUM | TUN_F_UFO;
1609 if (ioctl(s->fd, TUNSETOFFLOAD, offload) == 0)
1610 s->has_ufo = 1;
1611 tap_set_offload(s->vc, 0, 0, 0, 0, 0);
b664e367 1612 tap_read_poll(s, 1);
63a01ef8
AL		 1613 return s;
1614}
1615
71e72a19 1616#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
baf74c95
MM		 1617static int tap_open(char *ifname, int ifname_size,
1618 int *vnet_hdr, int vnet_hdr_required)
63a01ef8
AL		 1619{
1620 int fd;
1621 char *dev;
1622 struct stat s;
1623
1624 TFR(fd = open("/dev/tap", O_RDWR));
1625 if (fd < 0) {
1626 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1627 return -1;
1628 }
1629
1630 fstat(fd, &s);
1631 dev = devname(s.st_rdev, S_IFCHR);
1632 pstrcpy(ifname, ifname_size, dev);
1633
1634 fcntl(fd, F_SETFL, O_NONBLOCK);
1635 return fd;
1636}
1637#elif defined(__sun__)
1638#define TUNNEWPPA (('T'<<16) | 0x0001)
1639/*
1640 * Allocate TAP device, returns opened fd.
1641 * Stores dev name in the first arg(must be large enough).
1642 */
3f4cb3d3 1643static int tap_alloc(char *dev, size_t dev_size)
63a01ef8
AL		 1644{
1645 int tap_fd, if_fd, ppa = -1;
1646 static int ip_fd = 0;
1647 char *ptr;
1648
1649 static int arp_fd = 0;
1650 int ip_muxid, arp_muxid;
1651 struct strioctl strioc_if, strioc_ppa;
1652 int link_type = I_PLINK;;
1653 struct lifreq ifr;
1654 char actual_name[32] = "";
1655
1656 memset(&ifr, 0x0, sizeof(ifr));
1657
1658 if( *dev ){
1659 ptr = dev;
47398b9c 1660 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
63a01ef8
AL		 1661 ppa = atoi(ptr);
1662 }
1663
1664 /* Check if IP device was opened */
1665 if( ip_fd )
1666 close(ip_fd);
1667
1668 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1669 if (ip_fd < 0) {
1670 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1671 return -1;
1672 }
1673
1674 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1675 if (tap_fd < 0) {
1676 syslog(LOG_ERR, "Can't open /dev/tap");
1677 return -1;
1678 }
1679
1680 /* Assign a new PPA and get its unit number. */
1681 strioc_ppa.ic_cmd = TUNNEWPPA;
1682 strioc_ppa.ic_timout = 0;
1683 strioc_ppa.ic_len = sizeof(ppa);
1684 strioc_ppa.ic_dp = (char *)&ppa;
1685 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1686 syslog (LOG_ERR, "Can't assign new interface");
1687
1688 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1689 if (if_fd < 0) {
1690 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1691 return -1;
1692 }
1693 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1694 syslog(LOG_ERR, "Can't push IP module");
1695 return -1;
1696 }
1697
1698 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1699 syslog(LOG_ERR, "Can't get flags\n");
1700
1701 snprintf (actual_name, 32, "tap%d", ppa);
1702 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1703
1704 ifr.lifr_ppa = ppa;
1705 /* Assign ppa according to the unit number returned by tun device */
1706
1707 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1708 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1709 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1710 syslog (LOG_ERR, "Can't get flags\n");
1711 /* Push arp module to if_fd */
1712 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1713 syslog (LOG_ERR, "Can't push ARP module (2)");
1714
1715 /* Push arp module to ip_fd */
1716 if (ioctl (ip_fd, I_POP, NULL) < 0)
1717 syslog (LOG_ERR, "I_POP failed\n");
1718 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1719 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1720 /* Open arp_fd */
1721 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1722 if (arp_fd < 0)
1723 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1724
1725 /* Set ifname to arp */
1726 strioc_if.ic_cmd = SIOCSLIFNAME;
1727 strioc_if.ic_timout = 0;
1728 strioc_if.ic_len = sizeof(ifr);
1729 strioc_if.ic_dp = (char *)&ifr;
1730 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1731 syslog (LOG_ERR, "Can't set ifname to arp\n");
1732 }
1733
1734 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1735 syslog(LOG_ERR, "Can't link TAP device to IP");
1736 return -1;
1737 }
1738
1739 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1740 syslog (LOG_ERR, "Can't link TAP device to ARP");
1741
1742 close (if_fd);
1743
1744 memset(&ifr, 0x0, sizeof(ifr));
1745 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1746 ifr.lifr_ip_muxid = ip_muxid;
1747 ifr.lifr_arp_muxid = arp_muxid;
1748
1749 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1750 {
1751 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1752 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1753 syslog (LOG_ERR, "Can't set multiplexor id");
1754 }
1755
1756 snprintf(dev, dev_size, "tap%d", ppa);
1757 return tap_fd;
1758}
1759
baf74c95
MM		 1760static int tap_open(char *ifname, int ifname_size,
1761 int *vnet_hdr, int vnet_hdr_required)
63a01ef8
AL		 1762{
1763 char dev[10]="";
1764 int fd;
1765 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1766 fprintf(stderr, "Cannot allocate TAP device\n");
1767 return -1;
1768 }
1769 pstrcpy(ifname, ifname_size, dev);
1770 fcntl(fd, F_SETFL, O_NONBLOCK);
1771 return fd;
1772}
b29fe3ed 1773#elif defined (_AIX)
baf74c95
MM		 1774static int tap_open(char *ifname, int ifname_size,
1775 int *vnet_hdr, int vnet_hdr_required)
b29fe3ed 1776{
1777 fprintf (stderr, "no tap on AIX\n");
1778 return -1;
1779}
63a01ef8 1780#else
baf74c95
MM		 1781static int tap_open(char *ifname, int ifname_size,
1782 int *vnet_hdr, int vnet_hdr_required)
63a01ef8
AL		 1783{
1784 struct ifreq ifr;
1785 int fd, ret;
1786
1787 TFR(fd = open("/dev/net/tun", O_RDWR));
1788 if (fd < 0) {
1789 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1790 return -1;
1791 }
1792 memset(&ifr, 0, sizeof(ifr));
1793 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
8e0f8e5b 1794
baf74c95 1795 if (*vnet_hdr) {
8e0f8e5b
MM		 1796 unsigned int features;
1797
1798 if (ioctl(fd, TUNGETFEATURES, &features) == 0 &&
1799 features & IFF_VNET_HDR) {
1800 *vnet_hdr = 1;
1801 ifr.ifr_flags |= IFF_VNET_HDR;
1802 }
baf74c95
MM		 1803
1804 if (vnet_hdr_required && !*vnet_hdr) {
1805 qemu_error("vnet_hdr=1 requested, but no kernel "
1806 "support for IFF_VNET_HDR available");
1807 close(fd);
1808 return -1;
1809 }
8e0f8e5b
MM		 1810 }
1811
63a01ef8
AL		 1812 if (ifname[0] != '\0')
1813 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1814 else
1815 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1816 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1817 if (ret != 0) {
1818 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1819 close(fd);
1820 return -1;
1821 }
1822 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1823 fcntl(fd, F_SETFL, O_NONBLOCK);
1824 return fd;
1825}
1826#endif
1827
1828static int launch_script(const char *setup_script, const char *ifname, int fd)
1829{
7c3370d4 1830 sigset_t oldmask, mask;
63a01ef8
AL		 1831 int pid, status;
1832 char *args[3];
1833 char **parg;
1834
7c3370d4
JK		 1835 sigemptyset(&mask);
1836 sigaddset(&mask, SIGCHLD);
1837 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1838
1839 /* try to launch network script */
1840 pid = fork();
1841 if (pid == 0) {
1842 int open_max = sysconf(_SC_OPEN_MAX), i;
1843
1844 for (i = 0; i < open_max; i++) {
1845 if (i != STDIN_FILENO &&
1846 i != STDOUT_FILENO &&
1847 i != STDERR_FILENO &&
1848 i != fd) {
1849 close(i);
63a01ef8
AL		 1850 }
1851 }
7c3370d4
JK		 1852 parg = args;
1853 *parg++ = (char *)setup_script;
1854 *parg++ = (char *)ifname;
1855 *parg++ = NULL;
1856 execv(setup_script, args);
1857 _exit(1);
1858 } else if (pid > 0) {
1859 while (waitpid(pid, &status, 0) != pid) {
1860 /* loop */
1861 }
1862 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1863
1864 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1865 return 0;
1866 }
1867 }
1868 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1869 return -1;
63a01ef8
AL		 1870}
1871
424a7f96 1872static int net_tap_init(QemuOpts *opts, int *vnet_hdr)
63a01ef8 1873{
baf74c95 1874 int fd, vnet_hdr_required;
424a7f96
MM		 1875 char ifname[128] = {0,};
1876 const char *setup_script;
63a01ef8 1877
424a7f96
MM		 1878 if (qemu_opt_get(opts, "ifname")) {
1879 pstrcpy(ifname, sizeof(ifname), qemu_opt_get(opts, "ifname"));
1880 }
63a01ef8 1881
baf74c95
MM		 1882 *vnet_hdr = qemu_opt_get_bool(opts, "vnet_hdr", 1);
1883 if (qemu_opt_get(opts, "vnet_hdr")) {
1884 vnet_hdr_required = *vnet_hdr;
1885 } else {
1886 vnet_hdr_required = 0;
1887 }
1888
1889 TFR(fd = tap_open(ifname, sizeof(ifname), vnet_hdr, vnet_hdr_required));
424a7f96
MM		 1890 if (fd < 0) {
1891 return -1;
63a01ef8 1892 }
424a7f96
MM		 1893
1894 setup_script = qemu_opt_get(opts, "script");
1895 if (setup_script &&
1896 setup_script[0] != '\0' &&
1897 strcmp(setup_script, "no") != 0 &&
1898 launch_script(setup_script, ifname, fd)) {
1899 close(fd);
1900 return -1;
973cbd37 1901 }
424a7f96
MM		 1902
1903 qemu_opt_set(opts, "ifname", ifname);
1904
1905 return fd;
63a01ef8
AL		 1906}
1907
a8ed73f7 1908#endif /* !defined(_WIN32) && !defined(_AIX) */
63a01ef8
AL		 1909
1910#if defined(CONFIG_VDE)
1911typedef struct VDEState {
1912 VLANClientState *vc;
1913 VDECONN *vde;
1914} VDEState;
1915
1916static void vde_to_qemu(void *opaque)
1917{
1918 VDEState *s = opaque;
1919 uint8_t buf[4096];
1920 int size;
1921
cc63bb0f 1922 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
63a01ef8
AL		 1923 if (size > 0) {
1924 qemu_send_packet(s->vc, buf, size);
1925 }
1926}
1927
4f1c942b 1928static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1929{
e3f5ec2b 1930 VDEState *s = vc->opaque;
068daedd 1931 ssize_t ret;
4f1c942b
MM		 1932
1933 do {
1934 ret = vde_send(s->vde, (const char *)buf, size, 0);
1935 } while (ret < 0 && errno == EINTR);
1936
1937 return ret;
63a01ef8
AL		 1938}
1939
b946a153
AL		 1940static void vde_cleanup(VLANClientState *vc)
1941{
1942 VDEState *s = vc->opaque;
1943 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1944 vde_close(s->vde);
1945 qemu_free(s);
1946}
1947
7a9f6e4a
AL		 1948static int net_vde_init(VLANState *vlan, const char *model,
1949 const char *name, const char *sock,
bf38c1a0 1950 int port, const char *group, int mode)
63a01ef8
AL		 1951{
1952 VDEState *s;
dd51058d
MM		 1953 char *init_group = (char *)group;
1954 char *init_sock = (char *)sock;
63a01ef8
AL		 1955
1956 struct vde_open_args args = {
1957 .port = port,
1958 .group = init_group,
1959 .mode = mode,
1960 };
1961
1962 s = qemu_mallocz(sizeof(VDEState));
cc63bb0f 1963 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
63a01ef8
AL		 1964 if (!s->vde){
1965 free(s);
1966 return -1;
1967 }
bb6e6364
MM		 1968 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_VDE,
1969 vlan, NULL, model, name, NULL,
70783b9c 1970 vde_receive, NULL, NULL,
283c7c63 1971 vde_cleanup, s);
63a01ef8 1972 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
7cb7434b 1973 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
63a01ef8
AL		 1974 sock, vde_datafd(s->vde));
1975 return 0;
1976}
1977#endif
1978
1979/* network connection */
1980typedef struct NetSocketState {
1981 VLANClientState *vc;
1982 int fd;
1983 int state; /* 0 = getting length, 1 = getting data */
abcd2baa
AL		 1984 unsigned int index;
1985 unsigned int packet_len;
63a01ef8
AL		 1986 uint8_t buf[4096];
1987 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1988} NetSocketState;
1989
1990typedef struct NetSocketListenState {
1991 VLANState *vlan;
bf38c1a0 1992 char *model;
7a9f6e4a 1993 char *name;
63a01ef8
AL		 1994 int fd;
1995} NetSocketListenState;
1996
1997/* XXX: we consider we can send the whole packet without blocking */
4f1c942b 1998static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1999{
e3f5ec2b 2000 NetSocketState *s = vc->opaque;
63a01ef8
AL		 2001 uint32_t len;
2002 len = htonl(size);
2003
2004 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
4f1c942b 2005 return send_all(s->fd, buf, size);
63a01ef8
AL		 2006}
2007
4f1c942b 2008static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 2009{
e3f5ec2b 2010 NetSocketState *s = vc->opaque;
4f1c942b 2011
70503264 2012 return sendto(s->fd, (const void *)buf, size, 0,
4f1c942b 2013 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
63a01ef8
AL		 2014}
2015
2016static void net_socket_send(void *opaque)
2017{
2018 NetSocketState *s = opaque;
abcd2baa
AL		 2019 int size, err;
2020 unsigned l;
63a01ef8
AL		 2021 uint8_t buf1[4096];
2022 const uint8_t *buf;
2023
c5b76b38 2024 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
63a01ef8
AL		 2025 if (size < 0) {
2026 err = socket_error();
2027 if (err != EWOULDBLOCK)
2028 goto eoc;
2029 } else if (size == 0) {
2030 /* end of connection */
2031 eoc:
2032 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2033 closesocket(s->fd);
2034 return;
2035 }
2036 buf = buf1;
2037 while (size > 0) {
2038 /* reassemble a packet from the network */
2039 switch(s->state) {
2040 case 0:
2041 l = 4 - s->index;
2042 if (l > size)
2043 l = size;
2044 memcpy(s->buf + s->index, buf, l);
2045 buf += l;
2046 size -= l;
2047 s->index += l;
2048 if (s->index == 4) {
2049 /* got length */
2050 s->packet_len = ntohl(*(uint32_t *)s->buf);
2051 s->index = 0;
2052 s->state = 1;
2053 }
2054 break;
2055 case 1:
2056 l = s->packet_len - s->index;
2057 if (l > size)
2058 l = size;
abcd2baa
AL		 2059 if (s->index + l <= sizeof(s->buf)) {
2060 memcpy(s->buf + s->index, buf, l);
2061 } else {
2062 fprintf(stderr, "serious error: oversized packet received,"
2063 "connection terminated.\n");
2064 s->state = 0;
2065 goto eoc;
2066 }
2067
63a01ef8
AL		 2068 s->index += l;
2069 buf += l;
2070 size -= l;
2071 if (s->index >= s->packet_len) {
2072 qemu_send_packet(s->vc, s->buf, s->packet_len);
2073 s->index = 0;
2074 s->state = 0;
2075 }
2076 break;
2077 }
2078 }
2079}
2080
2081static void net_socket_send_dgram(void *opaque)
2082{
2083 NetSocketState *s = opaque;
2084 int size;
2085
c5b76b38 2086 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
63a01ef8
AL		 2087 if (size < 0)
2088 return;
2089 if (size == 0) {
2090 /* end of connection */
2091 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2092 return;
2093 }
2094 qemu_send_packet(s->vc, s->buf, size);
2095}
2096
2097static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
2098{
2099 struct ip_mreq imr;
2100 int fd;
2101 int val, ret;
2102 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
2103 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
2104 inet_ntoa(mcastaddr->sin_addr),
2105 (int)ntohl(mcastaddr->sin_addr.s_addr));
2106 return -1;
2107
2108 }
2109 fd = socket(PF_INET, SOCK_DGRAM, 0);
2110 if (fd < 0) {
2111 perror("socket(PF_INET, SOCK_DGRAM)");
2112 return -1;
2113 }
2114
2115 val = 1;
2116 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
2117 (const char *)&val, sizeof(val));
2118 if (ret < 0) {
2119 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
2120 goto fail;
2121 }
2122
2123 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
2124 if (ret < 0) {
2125 perror("bind");
2126 goto fail;
2127 }
2128
2129 /* Add host to multicast group */
2130 imr.imr_multiaddr = mcastaddr->sin_addr;
2131 imr.imr_interface.s_addr = htonl(INADDR_ANY);
2132
2133 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
2134 (const char *)&imr, sizeof(struct ip_mreq));
2135 if (ret < 0) {
2136 perror("setsockopt(IP_ADD_MEMBERSHIP)");
2137 goto fail;
2138 }
2139
2140 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
2141 val = 1;
2142 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
2143 (const char *)&val, sizeof(val));
2144 if (ret < 0) {
2145 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
2146 goto fail;
2147 }
2148
2149 socket_set_nonblock(fd);
2150 return fd;
2151fail:
2152 if (fd >= 0)
2153 closesocket(fd);
2154 return -1;
2155}
2156
b946a153
AL		 2157static void net_socket_cleanup(VLANClientState *vc)
2158{
2159 NetSocketState *s = vc->opaque;
2160 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2161 close(s->fd);
2162 qemu_free(s);
2163}
2164
7a9f6e4a
AL		 2165static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
2166 const char *model,
2167 const char *name,
bf38c1a0 2168 int fd, int is_connected)
63a01ef8
AL		 2169{
2170 struct sockaddr_in saddr;
2171 int newfd;
2172 socklen_t saddr_len;
2173 NetSocketState *s;
2174
2175 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
2176 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
2177 * by ONLY ONE process: we must "clone" this dgram socket --jjo
2178 */
2179
2180 if (is_connected) {
2181 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
2182 /* must be bound */
2183 if (saddr.sin_addr.s_addr==0) {
2184 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
2185 fd);
2186 return NULL;
2187 }
2188 /* clone dgram socket */
2189 newfd = net_socket_mcast_create(&saddr);
2190 if (newfd < 0) {
2191 /* error already reported by net_socket_mcast_create() */
2192 close(fd);
2193 return NULL;
2194 }
2195 /* clone newfd to fd, close newfd */
2196 dup2(newfd, fd);
2197 close(newfd);
2198
2199 } else {
2200 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2201 fd, strerror(errno));
2202 return NULL;
2203 }
2204 }
2205
2206 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8
AL		 2207 s->fd = fd;
2208
bb6e6364
MM		 2209 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET,
2210 vlan, NULL, model, name, NULL,
70783b9c 2211 net_socket_receive_dgram, NULL, NULL,
283c7c63 2212 net_socket_cleanup, s);
63a01ef8
AL		 2213 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2214
2215 /* mcast: save bound address as dst */
2216 if (is_connected) s->dgram_dst=saddr;
2217
2218 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2219 "socket: fd=%d (%s mcast=%s:%d)",
2220 fd, is_connected? "cloned" : "",
2221 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2222 return s;
2223}
2224
2225static void net_socket_connect(void *opaque)
2226{
2227 NetSocketState *s = opaque;
2228 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2229}
2230
7a9f6e4a
AL		 2231static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2232 const char *model,
2233 const char *name,
bf38c1a0 2234 int fd, int is_connected)
63a01ef8
AL		 2235{
2236 NetSocketState *s;
2237 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8 2238 s->fd = fd;
bb6e6364
MM		 2239 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET,
2240 vlan, NULL, model, name, NULL,
70783b9c 2241 net_socket_receive, NULL, NULL,
283c7c63 2242 net_socket_cleanup, s);
63a01ef8
AL		 2243 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2244 "socket: fd=%d", fd);
2245 if (is_connected) {
2246 net_socket_connect(s);
2247 } else {
2248 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2249 }
2250 return s;
2251}
2252
7a9f6e4a
AL		 2253static NetSocketState *net_socket_fd_init(VLANState *vlan,
2254 const char *model, const char *name,
bf38c1a0 2255 int fd, int is_connected)
63a01ef8 2256{
acedcfbf 2257 int so_type = -1, optlen=sizeof(so_type);
63a01ef8
AL		 2258
2259 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2260 (socklen_t *)&optlen)< 0) {
2261 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2262 return NULL;
2263 }
2264 switch(so_type) {
2265 case SOCK_DGRAM:
7a9f6e4a 2266 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
63a01ef8 2267 case SOCK_STREAM:
7a9f6e4a 2268 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2269 default:
2270 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2271 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
7a9f6e4a 2272 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2273 }
2274 return NULL;
2275}
2276
2277static void net_socket_accept(void *opaque)
2278{
2279 NetSocketListenState *s = opaque;
2280 NetSocketState *s1;
2281 struct sockaddr_in saddr;
2282 socklen_t len;
2283 int fd;
2284
2285 for(;;) {
2286 len = sizeof(saddr);
2287 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2288 if (fd < 0 && errno != EINTR) {
2289 return;
2290 } else if (fd >= 0) {
2291 break;
2292 }
2293 }
7a9f6e4a 2294 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
63a01ef8
AL		 2295 if (!s1) {
2296 closesocket(fd);
2297 } else {
2298 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2299 "socket: connection from %s:%d",
2300 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2301 }
2302}
2303
7a9f6e4a
AL		 2304static int net_socket_listen_init(VLANState *vlan,
2305 const char *model,
2306 const char *name,
bf38c1a0 2307 const char *host_str)
63a01ef8
AL		 2308{
2309 NetSocketListenState *s;
2310 int fd, val, ret;
2311 struct sockaddr_in saddr;
2312
2313 if (parse_host_port(&saddr, host_str) < 0)
2314 return -1;
2315
2316 s = qemu_mallocz(sizeof(NetSocketListenState));
63a01ef8
AL		 2317
2318 fd = socket(PF_INET, SOCK_STREAM, 0);
2319 if (fd < 0) {
2320 perror("socket");
2321 return -1;
2322 }
2323 socket_set_nonblock(fd);
2324
2325 /* allow fast reuse */
2326 val = 1;
2327 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2328
2329 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2330 if (ret < 0) {
2331 perror("bind");
2332 return -1;
2333 }
2334 ret = listen(fd, 0);
2335 if (ret < 0) {
2336 perror("listen");
2337 return -1;
2338 }
2339 s->vlan = vlan;
02374aa0
MM		 2340 s->model = qemu_strdup(model);
2341 s->name = name ? qemu_strdup(name) : NULL;
63a01ef8
AL		 2342 s->fd = fd;
2343 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2344 return 0;
2345}
2346
7a9f6e4a
AL		 2347static int net_socket_connect_init(VLANState *vlan,
2348 const char *model,
2349 const char *name,
bf38c1a0 2350 const char *host_str)
63a01ef8
AL		 2351{
2352 NetSocketState *s;
2353 int fd, connected, ret, err;
2354 struct sockaddr_in saddr;
2355
2356 if (parse_host_port(&saddr, host_str) < 0)
2357 return -1;
2358
2359 fd = socket(PF_INET, SOCK_STREAM, 0);
2360 if (fd < 0) {
2361 perror("socket");
2362 return -1;
2363 }
2364 socket_set_nonblock(fd);
2365
2366 connected = 0;
2367 for(;;) {
2368 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2369 if (ret < 0) {
2370 err = socket_error();
2371 if (err == EINTR || err == EWOULDBLOCK) {
2372 } else if (err == EINPROGRESS) {
2373 break;
2374#ifdef _WIN32
2375 } else if (err == WSAEALREADY) {
2376 break;
2377#endif
2378 } else {
2379 perror("connect");
2380 closesocket(fd);
2381 return -1;
2382 }
2383 } else {
2384 connected = 1;
2385 break;
2386 }
2387 }
7a9f6e4a 2388 s = net_socket_fd_init(vlan, model, name, fd, connected);
63a01ef8
AL		 2389 if (!s)
2390 return -1;
2391 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2392 "socket: connect to %s:%d",
2393 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2394 return 0;
2395}
2396
7a9f6e4a
AL		 2397static int net_socket_mcast_init(VLANState *vlan,
2398 const char *model,
2399 const char *name,
bf38c1a0 2400 const char *host_str)
63a01ef8
AL		 2401{
2402 NetSocketState *s;
2403 int fd;
2404 struct sockaddr_in saddr;
2405
2406 if (parse_host_port(&saddr, host_str) < 0)
2407 return -1;
2408
2409
2410 fd = net_socket_mcast_create(&saddr);
2411 if (fd < 0)
2412 return -1;
2413
7a9f6e4a 2414 s = net_socket_fd_init(vlan, model, name, fd, 0);
63a01ef8
AL		 2415 if (!s)
2416 return -1;
2417
2418 s->dgram_dst = saddr;
2419
2420 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2421 "socket: mcast=%s:%d",
2422 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2423 return 0;
2424
2425}
2426
bb9ea79e
AL		 2427typedef struct DumpState {
2428 VLANClientState *pcap_vc;
2429 int fd;
2430 int pcap_caplen;
2431} DumpState;
2432
2433#define PCAP_MAGIC 0xa1b2c3d4
2434
2435struct pcap_file_hdr {
2436 uint32_t magic;
2437 uint16_t version_major;
2438 uint16_t version_minor;
2439 int32_t thiszone;
2440 uint32_t sigfigs;
2441 uint32_t snaplen;
2442 uint32_t linktype;
2443};
2444
2445struct pcap_sf_pkthdr {
2446 struct {
2447 int32_t tv_sec;
2448 int32_t tv_usec;
2449 } ts;
2450 uint32_t caplen;
2451 uint32_t len;
2452};
2453
4f1c942b 2454static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
bb9ea79e 2455{
e3f5ec2b 2456 DumpState *s = vc->opaque;
bb9ea79e
AL		 2457 struct pcap_sf_pkthdr hdr;
2458 int64_t ts;
2459 int caplen;
2460
2461 /* Early return in case of previous error. */
2462 if (s->fd < 0) {
4f1c942b 2463 return size;
bb9ea79e
AL		 2464 }
2465
6ee093c9 2466 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
bb9ea79e
AL		 2467 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2468
37cb6fc3 2469 hdr.ts.tv_sec = ts / 1000000;
bb9ea79e
AL		 2470 hdr.ts.tv_usec = ts % 1000000;
2471 hdr.caplen = caplen;
2472 hdr.len = size;
2473 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2474 write(s->fd, buf, caplen) != caplen) {
2475 qemu_log("-net dump write error - stop dump\n");
2476 close(s->fd);
2477 s->fd = -1;
2478 }
4f1c942b
MM		 2479
2480 return size;
bb9ea79e
AL		 2481}
2482
2483static void net_dump_cleanup(VLANClientState *vc)
2484{
2485 DumpState *s = vc->opaque;
2486
2487 close(s->fd);
2488 qemu_free(s);
2489}
2490
fb12577c 2491static int net_dump_init(VLANState *vlan, const char *device,
bb9ea79e
AL		 2492 const char *name, const char *filename, int len)
2493{
2494 struct pcap_file_hdr hdr;
2495 DumpState *s;
2496
2497 s = qemu_malloc(sizeof(DumpState));
2498
024431b3 2499 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
bb9ea79e 2500 if (s->fd < 0) {
fb12577c 2501 qemu_error("-net dump: can't open %s\n", filename);
bb9ea79e
AL		 2502 return -1;
2503 }
2504
2505 s->pcap_caplen = len;
2506
2507 hdr.magic = PCAP_MAGIC;
2508 hdr.version_major = 2;
2509 hdr.version_minor = 4;
2510 hdr.thiszone = 0;
2511 hdr.sigfigs = 0;
2512 hdr.snaplen = s->pcap_caplen;
2513 hdr.linktype = 1;
2514
2515 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
fb12577c 2516 qemu_error("-net dump write error: %s\n", strerror(errno));
bb9ea79e
AL		 2517 close(s->fd);
2518 qemu_free(s);
2519 return -1;
2520 }
2521
bb6e6364
MM		 2522 s->pcap_vc = qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP,
2523 vlan, NULL, device, name, NULL,
70783b9c 2524 dump_receive, NULL, NULL,
bb9ea79e
AL		 2525 net_dump_cleanup, s);
2526 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2527 "dump to %s (len=%d)", filename, len);
2528 return 0;
2529}
2530
63a01ef8 2531/* find or alloc a new VLAN */
1a609520 2532VLANState *qemu_find_vlan(int id, int allocate)
63a01ef8 2533{
5610c3aa
MM		 2534 VLANState *vlan;
2535
2536 QTAILQ_FOREACH(vlan, &vlans, next) {
2537 if (vlan->id == id) {
63a01ef8 2538 return vlan;
5610c3aa 2539 }
63a01ef8 2540 }
5610c3aa 2541
1a609520
JK		 2542 if (!allocate) {
2543 return NULL;
2544 }
5610c3aa 2545
63a01ef8 2546 vlan = qemu_mallocz(sizeof(VLANState));
63a01ef8 2547 vlan->id = id;
5610c3aa 2548 QTAILQ_INIT(&vlan->clients);
f7105843
MM		 2549
2550 vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
2551 qemu_vlan_deliver_packet_iov,
2552 vlan);
5610c3aa
MM		 2553
2554 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
2555
63a01ef8
AL		 2556 return vlan;
2557}
2558
2ef924b4 2559VLANClientState *qemu_find_netdev(const char *id)
5869c4d5
MM		 2560{
2561 VLANClientState *vc;
2562
2563 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
2564 if (!strcmp(vc->name, id)) {
2565 return vc;
2566 }
2567 }
2568
2569 return NULL;
2570}
2571
7697079b
AL		 2572static int nic_get_free_idx(void)
2573{
2574 int index;
2575
2576 for (index = 0; index < MAX_NICS; index++)
2577 if (!nd_table[index].used)
2578 return index;
2579 return -1;
2580}
2581
07caea31
MA		 2582int qemu_show_nic_models(const char *arg, const char *const *models)
2583{
2584 int i;
2585
2586 if (!arg || strcmp(arg, "?"))
2587 return 0;
2588
2589 fprintf(stderr, "qemu: Supported NIC models: ");
2590 for (i = 0 ; models[i]; i++)
2591 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2592 return 1;
2593}
2594
d07f22c5
AL		 2595void qemu_check_nic_model(NICInfo *nd, const char *model)
2596{
2597 const char *models[2];
2598
2599 models[0] = model;
2600 models[1] = NULL;
2601
07caea31
MA		 2602 if (qemu_show_nic_models(nd->model, models))
2603 exit(0);
2604 if (qemu_find_nic_model(nd, models, model) < 0)
2605 exit(1);
d07f22c5
AL		 2606}
2607
07caea31
MA		 2608int qemu_find_nic_model(NICInfo *nd, const char * const *models,
2609 const char *default_model)
d07f22c5 2610{
07caea31 2611 int i;
d07f22c5
AL		 2612
2613 if (!nd->model)
32a8e14a 2614 nd->model = qemu_strdup(default_model);
d07f22c5 2615
07caea31
MA		 2616 for (i = 0 ; models[i]; i++) {
2617 if (strcmp(nd->model, models[i]) == 0)
2618 return i;
d07f22c5
AL		 2619 }
2620
07caea31
MA		 2621 qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
2622 return -1;
d07f22c5
AL		 2623}
2624
c1d6eed7
MM		 2625static int net_handle_fd_param(Monitor *mon, const char *param)
2626{
2627 if (!qemu_isdigit(param[0])) {
2628 int fd;
2629
2630 fd = monitor_get_fd(mon, param);
2631 if (fd == -1) {
fb12577c 2632 qemu_error("No file descriptor named %s found", param);
c1d6eed7
MM		 2633 return -1;
2634 }
2635
2636 return fd;
2637 } else {
2638 return strtol(param, NULL, 0);
2639 }
2640}
2641
f6b134ac
MM		 2642static int net_init_nic(QemuOpts *opts,
2643 Monitor *mon,
2644 const char *name,
2645 VLANState *vlan)
f83c6e10
MM		 2646{
2647 int idx;
2648 NICInfo *nd;
5869c4d5 2649 const char *netdev;
f83c6e10
MM		 2650
2651 idx = nic_get_free_idx();
2652 if (idx == -1 || nb_nics >= MAX_NICS) {
2653 qemu_error("Too Many NICs\n");
2654 return -1;
2655 }
2656
2657 nd = &nd_table[idx];
2658
2659 memset(nd, 0, sizeof(*nd));
2660
5869c4d5
MM		 2661 if ((netdev = qemu_opt_get(opts, "netdev"))) {
2662 nd->netdev = qemu_find_netdev(netdev);
2663 if (!nd->netdev) {
2664 qemu_error("netdev '%s' not found\n", netdev);
2665 return -1;
2666 }
2667 } else {
2668 assert(vlan);
2669 nd->vlan = vlan;
2670 }
6d952ebe
MM		 2671 if (name) {
2672 nd->name = qemu_strdup(name);
2673 }
f83c6e10
MM		 2674 if (qemu_opt_get(opts, "model")) {
2675 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
2676 }
2677 if (qemu_opt_get(opts, "addr")) {
2678 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
2679 }
2680
2681 nd->macaddr[0] = 0x52;
2682 nd->macaddr[1] = 0x54;
2683 nd->macaddr[2] = 0x00;
2684 nd->macaddr[3] = 0x12;
2685 nd->macaddr[4] = 0x34;
2686 nd->macaddr[5] = 0x56 + idx;
2687
2688 if (qemu_opt_get(opts, "macaddr") &&
2689 parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
2690 qemu_error("invalid syntax for ethernet address\n");
2691 return -1;
2692 }
2693
2694 nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
2695 if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
2696 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
2697 qemu_error("invalid # of vectors: %d\n", nd->nvectors);
2698 return -1;
2699 }
2700
2701 nd->used = 1;
5869c4d5
MM		 2702 if (vlan) {
2703 nd->vlan->nb_guest_devs++;
2704 }
f83c6e10
MM		 2705 nb_nics++;
2706
2707 return idx;
2708}
2709
a3a766e7 2710#if defined(CONFIG_SLIRP)
ec302ffd
MM		 2711static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
2712{
2713 struct slirp_config_str *config;
2714
2715 if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
2716 return 0;
2717 }
2718
2719 config = qemu_mallocz(sizeof(*config));
2720
2721 pstrcpy(config->str, sizeof(config->str), value);
2722
2723 if (!strcmp(name, "hostfwd")) {
2724 config->flags = SLIRP_CFG_HOSTFWD;
2725 }
2726
2727 config->next = slirp_configs;
2728 slirp_configs = config;
2729
2730 return 0;
2731}
2732
f6b134ac
MM		 2733static int net_init_slirp(QemuOpts *opts,
2734 Monitor *mon,
2735 const char *name,
2736 VLANState *vlan)
ec302ffd 2737{
ec302ffd 2738 struct slirp_config_str *config;
ec302ffd
MM		 2739 const char *vhost;
2740 const char *vhostname;
2741 const char *vdhcp_start;
2742 const char *vnamesrv;
2743 const char *tftp_export;
2744 const char *bootfile;
2745 const char *smb_export;
2746 const char *vsmbsrv;
2747 char *vnet = NULL;
2748 int restricted = 0;
2749 int ret;
2750
ec302ffd
MM		 2751 vhost = qemu_opt_get(opts, "host");
2752 vhostname = qemu_opt_get(opts, "hostname");
2753 vdhcp_start = qemu_opt_get(opts, "dhcpstart");
2754 vnamesrv = qemu_opt_get(opts, "dns");
2755 tftp_export = qemu_opt_get(opts, "tftp");
2756 bootfile = qemu_opt_get(opts, "bootfile");
2757 smb_export = qemu_opt_get(opts, "smb");
2758 vsmbsrv = qemu_opt_get(opts, "smbserver");
2759
2760 if (qemu_opt_get(opts, "ip")) {
2761 const char *ip = qemu_opt_get(opts, "ip");
2762 int l = strlen(ip) + strlen("/24") + 1;
2763
2764 vnet = qemu_malloc(l);
2765
2766 /* emulate legacy ip= parameter */
2767 pstrcpy(vnet, l, ip);
2768 pstrcat(vnet, l, "/24");
2769 }
2770
2771 if (qemu_opt_get(opts, "net")) {
2772 if (vnet) {
2773 qemu_free(vnet);
2774 }
2775 vnet = qemu_strdup(qemu_opt_get(opts, "net"));
2776 }
2777
2778 if (qemu_opt_get(opts, "restrict") &&
2779 qemu_opt_get(opts, "restrict")[0] == 'y') {
2780 restricted = 1;
2781 }
2782
2783 qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
2784
2785 ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
2786 vhostname, tftp_export, bootfile, vdhcp_start,
2787 vnamesrv, smb_export, vsmbsrv);
2788
2789 while (slirp_configs) {
2790 config = slirp_configs;
2791 slirp_configs = config->next;
2792 qemu_free(config);
2793 }
2794
f6b134ac 2795 if (ret != -1 && vlan) {
ec302ffd
MM		 2796 vlan->nb_host_devs++;
2797 }
2798
2799 qemu_free(vnet);
2800
2801 return ret;
2802}
a3a766e7 2803#endif /* CONFIG_SLIRP */
ec302ffd 2804
a8ed73f7
MM		 2805#if !defined(_WIN32) && !defined(_AIX)
2806int net_init_tap(QemuOpts *opts, Monitor *mon, const char *name, VLANState *vlan)
8a1c5235 2807{
8a1c5235 2808 TAPState *s;
424a7f96 2809 int fd, vnet_hdr;
8a1c5235 2810
8a1c5235 2811 if (qemu_opt_get(opts, "fd")) {
8a1c5235
MM		 2812 if (qemu_opt_get(opts, "ifname") ||
2813 qemu_opt_get(opts, "script") ||
baf74c95
MM		 2814 qemu_opt_get(opts, "downscript") ||
2815 qemu_opt_get(opts, "vnet_hdr")) {
2816 qemu_error("ifname=, script=, downscript= and vnet_hdr= is invalid with fd=\n");
8a1c5235
MM		 2817 return -1;
2818 }
2819
2820 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2821 if (fd == -1) {
2822 return -1;
2823 }
2824
2825 fcntl(fd, F_SETFL, O_NONBLOCK);
2826
424a7f96 2827 vnet_hdr = tap_probe_vnet_hdr(fd);
8a1c5235 2828 } else {
424a7f96
MM		 2829 if (!qemu_opt_get(opts, "script")) {
2830 qemu_opt_set(opts, "script", DEFAULT_NETWORK_SCRIPT);
8a1c5235 2831 }
424a7f96
MM		 2832
2833 if (!qemu_opt_get(opts, "downscript")) {
2834 qemu_opt_set(opts, "downscript", DEFAULT_NETWORK_DOWN_SCRIPT);
8a1c5235
MM		 2835 }
2836
424a7f96 2837 fd = net_tap_init(opts, &vnet_hdr);
8a1c5235
MM		 2838 }
2839
424a7f96 2840 s = net_tap_fd_init(vlan, "tap", name, fd, vnet_hdr);
8a1c5235 2841 if (!s) {
424a7f96 2842 close(fd);
8a1c5235
MM		 2843 return -1;
2844 }
2845
2846 if (tap_set_sndbuf(s, opts) < 0) {
2847 return -1;
2848 }
2849
424a7f96
MM		 2850 if (qemu_opt_get(opts, "fd")) {
2851 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
2852 } else {
2853 const char *ifname, *script, *downscript;
2854
2855 ifname = qemu_opt_get(opts, "ifname");
2856 script = qemu_opt_get(opts, "script");
2857 downscript = qemu_opt_get(opts, "downscript");
2858
2859 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2860 "ifname=%s,script=%s,downscript=%s",
2861 ifname, script, downscript);
2862
2863 if (strcmp(downscript, "no") != 0) {
2864 snprintf(s->down_script, sizeof(s->down_script), "%s", downscript);
2865 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
2866 }
2867 }
2868
f6b134ac
MM		 2869 if (vlan) {
2870 vlan->nb_host_devs++;
2871 }
8a1c5235
MM		 2872
2873 return 0;
2874}
a8ed73f7 2875#endif /* !defined(_WIN32) && !defined(_AIX) */
8a1c5235 2876
f6b134ac
MM		 2877static int net_init_socket(QemuOpts *opts,
2878 Monitor *mon,
2879 const char *name,
2880 VLANState *vlan)
88ce16ca 2881{
88ce16ca
MM		 2882 if (qemu_opt_get(opts, "fd")) {
2883 int fd;
2884
2885 if (qemu_opt_get(opts, "listen") ||
2886 qemu_opt_get(opts, "connect") ||
2887 qemu_opt_get(opts, "mcast")) {
2888 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2889 return -1;
2890 }
2891
2892 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2893 if (fd == -1) {
2894 return -1;
2895 }
2896
2897 if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) {
2898 close(fd);
2899 return -1;
2900 }
2901 } else if (qemu_opt_get(opts, "listen")) {
2902 const char *listen;
2903
2904 if (qemu_opt_get(opts, "fd") ||
2905 qemu_opt_get(opts, "connect") ||
2906 qemu_opt_get(opts, "mcast")) {
2907 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2908 return -1;
2909 }
2910
2911 listen = qemu_opt_get(opts, "listen");
2912
2913 if (net_socket_listen_init(vlan, "socket", name, listen) == -1) {
2914 return -1;
2915 }
2916 } else if (qemu_opt_get(opts, "connect")) {
2917 const char *connect;
2918
2919 if (qemu_opt_get(opts, "fd") ||
2920 qemu_opt_get(opts, "listen") ||
2921 qemu_opt_get(opts, "mcast")) {
2922 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2923 return -1;
2924 }
2925
2926 connect = qemu_opt_get(opts, "connect");
2927
2928 if (net_socket_connect_init(vlan, "socket", name, connect) == -1) {
2929 return -1;
2930 }
2931 } else if (qemu_opt_get(opts, "mcast")) {
2932 const char *mcast;
2933
2934 if (qemu_opt_get(opts, "fd") ||
2935 qemu_opt_get(opts, "connect") ||
2936 qemu_opt_get(opts, "listen")) {
2937 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
2938 return -1;
2939 }
2940
2941 mcast = qemu_opt_get(opts, "mcast");
2942
2943 if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) {
2944 return -1;
2945 }
2946 } else {
2947 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
2948 return -1;
2949 }
2950
f6b134ac
MM		 2951 if (vlan) {
2952 vlan->nb_host_devs++;
2953 }
88ce16ca
MM		 2954
2955 return 0;
2956}
2957
dd51058d 2958#ifdef CONFIG_VDE
f6b134ac
MM		 2959static int net_init_vde(QemuOpts *opts,
2960 Monitor *mon,
2961 const char *name,
2962 VLANState *vlan)
dd51058d 2963{
dd51058d
MM		 2964 const char *sock;
2965 const char *group;
2966 int port, mode;
2967
dd51058d
MM		 2968 sock = qemu_opt_get(opts, "sock");
2969 group = qemu_opt_get(opts, "group");
2970
2971 port = qemu_opt_get_number(opts, "port", 0);
2972 mode = qemu_opt_get_number(opts, "mode", 0700);
2973
2974 if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) {
2975 return -1;
2976 }
2977
f6b134ac
MM		 2978 if (vlan) {
2979 vlan->nb_host_devs++;
2980 }
dd51058d
MM		 2981
2982 return 0;
2983}
2984#endif
2985
f6b134ac
MM		 2986static int net_init_dump(QemuOpts *opts,
2987 Monitor *mon,
2988 const char *name,
2989 VLANState *vlan)
ed2955c2 2990{
ed2955c2
MM		 2991 int len;
2992 const char *file;
ed2955c2
MM		 2993 char def_file[128];
2994
f6b134ac 2995 assert(vlan);
ed2955c2 2996
ed2955c2
MM		 2997 file = qemu_opt_get(opts, "file");
2998 if (!file) {
2999 snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id);
3000 file = def_file;
3001 }
3002
3003 len = qemu_opt_get_size(opts, "len", 65536);
3004
3005 return net_dump_init(vlan, "dump", name, file, len);
3006}
3007
f83c6e10
MM		 3008#define NET_COMMON_PARAMS_DESC \
3009 { \
3010 .name = "type", \
3011 .type = QEMU_OPT_STRING, \
3012 .help = "net client type (nic, tap etc.)", \
3013 }, { \
3014 .name = "vlan", \
3015 .type = QEMU_OPT_NUMBER, \
3016 .help = "vlan number", \
3017 }, { \
3018 .name = "name", \
3019 .type = QEMU_OPT_STRING, \
3020 .help = "identifier for monitor commands", \
3021 }
3022
6d952ebe
MM		 3023typedef int (*net_client_init_func)(QemuOpts *opts,
3024 Monitor *mon,
f6b134ac
MM		 3025 const char *name,
3026 VLANState *vlan);
f83c6e10
MM		 3027
3028/* magic number, but compiler will warn if too small */
3029#define NET_MAX_DESC 20
3030
3031static struct {
3032 const char *type;
3033 net_client_init_func init;
3034 QemuOptDesc desc[NET_MAX_DESC];
3035} net_client_types[] = {
3036 {
3037 .type = "none",
3038 .desc = {
3039 NET_COMMON_PARAMS_DESC,
3040 { /* end of list */ }
3041 },
3042 }, {
3043 .type = "nic",
3044 .init = net_init_nic,
3045 .desc = {
3046 NET_COMMON_PARAMS_DESC,
5869c4d5
MM		 3047 {
3048 .name = "netdev",
3049 .type = QEMU_OPT_STRING,
3050 .help = "id of -netdev to connect to",
3051 },
f83c6e10
MM		 3052 {
3053 .name = "macaddr",
3054 .type = QEMU_OPT_STRING,
3055 .help = "MAC address",
3056 }, {
3057 .name = "model",
3058 .type = QEMU_OPT_STRING,
3059 .help = "device model (e1000, rtl8139, virtio etc.)",
3060 }, {
3061 .name = "addr",
3062 .type = QEMU_OPT_STRING,
3063 .help = "PCI device address",
3064 }, {
3065 .name = "vectors",
3066 .type = QEMU_OPT_NUMBER,
3067 .help = "number of MSI-x vectors, 0 to disable MSI-X",
3068 },
3069 { /* end of list */ }
3070 },
ec302ffd
MM		 3071#ifdef CONFIG_SLIRP
3072 }, {
3073 .type = "user",
3074 .init = net_init_slirp,
3075 .desc = {
3076 NET_COMMON_PARAMS_DESC,
3077 {
3078 .name = "hostname",
3079 .type = QEMU_OPT_STRING,
3080 .help = "client hostname reported by the builtin DHCP server",
3081 }, {
3082 .name = "restrict",
3083 .type = QEMU_OPT_STRING,
3084 .help = "isolate the guest from the host (y|yes|n|no)",
3085 }, {
3086 .name = "ip",
3087 .type = QEMU_OPT_STRING,
3088 .help = "legacy parameter, use net= instead",
3089 }, {
3090 .name = "net",
3091 .type = QEMU_OPT_STRING,
3092 .help = "IP address and optional netmask",
3093 }, {
3094 .name = "host",
3095 .type = QEMU_OPT_STRING,
3096 .help = "guest-visible address of the host",
3097 }, {
3098 .name = "tftp",
3099 .type = QEMU_OPT_STRING,
3100 .help = "root directory of the built-in TFTP server",
3101 }, {
3102 .name = "bootfile",
3103 .type = QEMU_OPT_STRING,
3104 .help = "BOOTP filename, for use with tftp=",
3105 }, {
3106 .name = "dhcpstart",
3107 .type = QEMU_OPT_STRING,
3108 .help = "the first of the 16 IPs the built-in DHCP server can assign",
3109 }, {
3110 .name = "dns",
3111 .type = QEMU_OPT_STRING,
3112 .help = "guest-visible address of the virtual nameserver",
3113 }, {
3114 .name = "smb",
3115 .type = QEMU_OPT_STRING,
3116 .help = "root directory of the built-in SMB server",
3117 }, {
3118 .name = "smbserver",
3119 .type = QEMU_OPT_STRING,
3120 .help = "IP address of the built-in SMB server",
3121 }, {
3122 .name = "hostfwd",
3123 .type = QEMU_OPT_STRING,
3124 .help = "guest port number to forward incoming TCP or UDP connections",
3125 }, {
3126 .name = "guestfwd",
3127 .type = QEMU_OPT_STRING,
3128 .help = "IP address and port to forward guest TCP connections",
3129 },
3130 { /* end of list */ }
3131 },
8a1c5235 3132#endif
a8ed73f7 3133#ifndef _AIX
8a1c5235
MM		 3134 }, {
3135 .type = "tap",
a8ed73f7 3136 .init = net_init_tap,
8a1c5235
MM		 3137 .desc = {
3138 NET_COMMON_PARAMS_DESC,
3139 {
3140 .name = "ifname",
3141 .type = QEMU_OPT_STRING,
3142 .help = "interface name",
3143 },
a8ed73f7 3144#ifndef _WIN32
8a1c5235
MM		 3145 {
3146 .name = "fd",
3147 .type = QEMU_OPT_STRING,
3148 .help = "file descriptor of an already opened tap",
8a1c5235
MM		 3149 }, {
3150 .name = "script",
3151 .type = QEMU_OPT_STRING,
3152 .help = "script to initialize the interface",
3153 }, {
3154 .name = "downscript",
3155 .type = QEMU_OPT_STRING,
3156 .help = "script to shut down the interface",
8a1c5235
MM		 3157 }, {
3158 .name = "sndbuf",
3159 .type = QEMU_OPT_SIZE,
3160 .help = "send buffer limit"
baf74c95
MM		 3161 }, {
3162 .name = "vnet_hdr",
3163 .type = QEMU_OPT_BOOL,
3164 .help = "enable the IFF_VNET_HDR flag on the tap interface"
8a1c5235 3165 },
a8ed73f7 3166#endif /* _WIN32 */
8a1c5235
MM		 3167 { /* end of list */ }
3168 },
a8ed73f7 3169#endif /* _AIX */
88ce16ca
MM		 3170 }, {
3171 .type = "socket",
3172 .init = net_init_socket,
3173 .desc = {
3174 NET_COMMON_PARAMS_DESC,
3175 {
3176 .name = "fd",
3177 .type = QEMU_OPT_STRING,
3178 .help = "file descriptor of an already opened socket",
3179 }, {
3180 .name = "listen",
3181 .type = QEMU_OPT_STRING,
3182 .help = "port number, and optional hostname, to listen on",
3183 }, {
3184 .name = "connect",
3185 .type = QEMU_OPT_STRING,
3186 .help = "port number, and optional hostname, to connect to",
3187 }, {
3188 .name = "mcast",
3189 .type = QEMU_OPT_STRING,
3190 .help = "UDP multicast address and port number",
3191 },
3192 { /* end of list */ }
3193 },
dd51058d
MM		 3194#ifdef CONFIG_VDE
3195 }, {
3196 .type = "vde",
3197 .init = net_init_vde,
3198 .desc = {
3199 NET_COMMON_PARAMS_DESC,
3200 {
3201 .name = "sock",
3202 .type = QEMU_OPT_STRING,
3203 .help = "socket path",
3204 }, {
3205 .name = "port",
3206 .type = QEMU_OPT_NUMBER,
3207 .help = "port number",
3208 }, {
3209 .name = "group",
3210 .type = QEMU_OPT_STRING,
3211 .help = "group owner of socket",
3212 }, {
3213 .name = "mode",
3214 .type = QEMU_OPT_NUMBER,
3215 .help = "permissions for socket",
3216 },
3217 { /* end of list */ }
3218 },
3219#endif
ed2955c2
MM		 3220 }, {
3221 .type = "dump",
3222 .init = net_init_dump,
3223 .desc = {
3224 NET_COMMON_PARAMS_DESC,
3225 {
3226 .name = "len",
3227 .type = QEMU_OPT_SIZE,
3228 .help = "per-packet size limit (64k default)",
3229 }, {
3230 .name = "file",
3231 .type = QEMU_OPT_STRING,
3232 .help = "dump file path (default is qemu-vlan0.pcap)",
3233 },
3234 { /* end of list */ }
3235 },
f83c6e10
MM		 3236 },
3237 { /* end of list */ }
3238};
3239
f6b134ac 3240int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
f83c6e10 3241{
6d952ebe 3242 const char *name;
f83c6e10
MM		 3243 const char *type;
3244 int i;
3245
3246 type = qemu_opt_get(opts, "type");
3247 if (!type) {
3248 qemu_error("No type specified for -net\n");
3249 return -1;
3250 }
3251
f6b134ac
MM		 3252 if (is_netdev) {
3253 if (strcmp(type, "tap") != 0 &&
3254#ifdef CONFIG_SLIRP
3255 strcmp(type, "user") != 0 &&
3256#endif
3257#ifdef CONFIG_VDE
3258 strcmp(type, "vde") != 0 &&
3259#endif
3260 strcmp(type, "socket") != 0) {
3261 qemu_error("The '%s' network backend type is not valid with -netdev\n",
3262 type);
3263 return -1;
3264 }
3265
3266 if (qemu_opt_get(opts, "vlan")) {
3267 qemu_error("The 'vlan' parameter is not valid with -netdev\n");
3268 return -1;
3269 }
3270 if (qemu_opt_get(opts, "name")) {
3271 qemu_error("The 'name' parameter is not valid with -netdev\n");
3272 return -1;
3273 }
3274 if (!qemu_opts_id(opts)) {
3275 qemu_error("The id= parameter is required with -netdev\n");
3276 return -1;
3277 }
3278 }
3279
6d952ebe
MM		 3280 name = qemu_opts_id(opts);
3281 if (!name) {
3282 name = qemu_opt_get(opts, "name");
3283 }
3284
f83c6e10
MM		 3285 for (i = 0; net_client_types[i].type != NULL; i++) {
3286 if (!strcmp(net_client_types[i].type, type)) {
f6b134ac
MM		 3287 VLANState *vlan = NULL;
3288
f83c6e10
MM		 3289 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
3290 return -1;
3291 }
3292
5869c4d5
MM		 3293 /* Do not add to a vlan if it's a -netdev or a nic with a
3294 * netdev= parameter. */
3295 if (!(is_netdev ||
3296 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
f6b134ac
MM		 3297 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
3298 }
3299
f83c6e10 3300 if (net_client_types[i].init) {
f6b134ac 3301 return net_client_types[i].init(opts, mon, name, vlan);
f83c6e10
MM		 3302 } else {
3303 return 0;
3304 }
3305 }
3306 }
3307
3308 qemu_error("Invalid -net type '%s'\n", type);
3309 return -1;
3310}
3311
8b13c4a7
AL		 3312void net_client_uninit(NICInfo *nd)
3313{
d80b9fc6
MM		 3314 if (nd->vlan) {
3315 nd->vlan->nb_guest_devs--;
3316 }
8b13c4a7 3317 nb_nics--;
a9796703 3318
9203f520
MM		 3319 qemu_free(nd->model);
3320 qemu_free(nd->name);
3321 qemu_free(nd->devaddr);
a9796703 3322
d2cffe30 3323 nd->used = 0;
8b13c4a7
AL		 3324}
3325
6f338c34
AL		 3326static int net_host_check_device(const char *device)
3327{
3328 int i;
bb9ea79e 3329 const char *valid_param_list[] = { "tap", "socket", "dump"
6f338c34
AL		 3330#ifdef CONFIG_SLIRP
3331 ,"user"
3332#endif
3333#ifdef CONFIG_VDE
3334 ,"vde"
3335#endif
3336 };
3337 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
3338 if (!strncmp(valid_param_list[i], device,
3339 strlen(valid_param_list[i])))
3340 return 1;
3341 }
3342
3343 return 0;
3344}
3345
f18c16de 3346void net_host_device_add(Monitor *mon, const QDict *qdict)
6f338c34 3347{
f18c16de 3348 const char *device = qdict_get_str(qdict, "device");
7f1c9d20
MM		 3349 const char *opts_str = qdict_get_try_str(qdict, "opts");
3350 QemuOpts *opts;
f18c16de 3351
6f338c34 3352 if (!net_host_check_device(device)) {
376253ec 3353 monitor_printf(mon, "invalid host network device %s\n", device);
6f338c34
AL		 3354 return;
3355 }
7f1c9d20
MM		 3356
3357 opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
3358 if (!opts) {
3359 monitor_printf(mon, "parsing network options '%s' failed\n",
3360 opts_str ? opts_str : "");
3361 return;
3362 }
3363
3364 qemu_opt_set(opts, "type", device);
3365
f6b134ac 3366 if (net_client_init(mon, opts, 0) < 0) {
5c8be678
AL		 3367 monitor_printf(mon, "adding host network device %s failed\n", device);
3368 }
6f338c34
AL		 3369}
3370
f18c16de 3371void net_host_device_remove(Monitor *mon, const QDict *qdict)
6f338c34 3372{
6f338c34 3373 VLANClientState *vc;
f18c16de
LC		 3374 int vlan_id = qdict_get_int(qdict, "vlan_id");
3375 const char *device = qdict_get_str(qdict, "device");
6f338c34 3376
1a609520 3377 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
6f338c34 3378 if (!vc) {
6f338c34
AL		 3379 return;
3380 }
e8f1f9db
AL		 3381 if (!net_host_check_device(vc->model)) {
3382 monitor_printf(mon, "invalid host network device %s\n", device);
3383 return;
3384 }
6f338c34
AL		 3385 qemu_del_vlan_client(vc);
3386}
3387
406c8df3
GC		 3388void net_set_boot_mask(int net_boot_mask)
3389{
3390 int i;
3391
3392 /* Only the first four NICs may be bootable */
3393 net_boot_mask = net_boot_mask & 0xF;
3394
3395 for (i = 0; i < nb_nics; i++) {
3396 if (net_boot_mask & (1 << i)) {
3397 nd_table[i].bootable = 1;
3398 net_boot_mask &= ~(1 << i);
3399 }
3400 }
3401
3402 if (net_boot_mask) {
3403 fprintf(stderr, "Cannot boot from non-existent NIC\n");
3404 exit(1);
3405 }
3406}
3407
376253ec 3408void do_info_network(Monitor *mon)
63a01ef8
AL		 3409{
3410 VLANState *vlan;
63a01ef8 3411
5610c3aa
MM		 3412 QTAILQ_FOREACH(vlan, &vlans, next) {
3413 VLANClientState *vc;
3414
376253ec 3415 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
5610c3aa
MM		 3416
3417 QTAILQ_FOREACH(vc, &vlan->clients, next) {
376253ec 3418 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
5610c3aa 3419 }
63a01ef8
AL		 3420 }
3421}
3422
f18c16de 3423void do_set_link(Monitor *mon, const QDict *qdict)
436e5e53
AL		 3424{
3425 VLANState *vlan;
3426 VLANClientState *vc = NULL;
f18c16de
LC		 3427 const char *name = qdict_get_str(qdict, "name");
3428 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
436e5e53 3429
5610c3aa
MM		 3430 QTAILQ_FOREACH(vlan, &vlans, next) {
3431 QTAILQ_FOREACH(vc, &vlan->clients, next) {
3432 if (strcmp(vc->name, name) == 0) {
dd5de373 3433 goto done;
5610c3aa
MM		 3434 }
3435 }
3436 }
dd5de373 3437done:
436e5e53
AL		 3438
3439 if (!vc) {
7dc3fa09 3440 monitor_printf(mon, "could not find network device '%s'\n", name);
c3cf0d3f 3441 return;
436e5e53
AL		 3442 }
3443
3444 if (strcmp(up_or_down, "up") == 0)
3445 vc->link_down = 0;
3446 else if (strcmp(up_or_down, "down") == 0)
3447 vc->link_down = 1;
3448 else
376253ec
AL		 3449 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
3450 "valid\n", up_or_down);
436e5e53 3451
34b25ca7
AL		 3452 if (vc->link_status_changed)
3453 vc->link_status_changed(vc);
436e5e53
AL		 3454}
3455
63a01ef8
AL		 3456void net_cleanup(void)
3457{
3458 VLANState *vlan;
577c4af9 3459 VLANClientState *vc, *next_vc;
63a01ef8 3460
5610c3aa 3461 QTAILQ_FOREACH(vlan, &vlans, next) {
5610c3aa 3462 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
b946a153 3463 qemu_del_vlan_client(vc);
63a01ef8
AL		 3464 }
3465 }
577c4af9
MM		 3466
3467 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
3468 qemu_del_vlan_client(vc);
3469 }
63a01ef8
AL		 3470}
3471
dc1c9fe8 3472static void net_check_clients(void)
63a01ef8
AL		 3473{
3474 VLANState *vlan;
3475
5610c3aa 3476 QTAILQ_FOREACH(vlan, &vlans, next) {
63a01ef8
AL		 3477 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
3478 continue;
3479 if (vlan->nb_guest_devs == 0)
3480 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
3481 if (vlan->nb_host_devs == 0)
3482 fprintf(stderr,
3483 "Warning: vlan %d is not connected to host network\n",
3484 vlan->id);
3485 }
3486}
dc1c9fe8
MM		 3487
3488static int net_init_client(QemuOpts *opts, void *dummy)
3489{
c1671a08
MM		 3490 if (net_client_init(NULL, opts, 0) < 0)
3491 return -1;
3492 return 0;
f6b134ac
MM		 3493}
3494
3495static int net_init_netdev(QemuOpts *opts, void *dummy)
3496{
3497 return net_client_init(NULL, opts, 1);
dc1c9fe8
MM		 3498}
3499
3500int net_init_clients(void)
3501{
3502 if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
3503 /* if no clients, we use a default config */
3504 qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
3505#ifdef CONFIG_SLIRP
3506 qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
3507#endif
3508 }
3509
5610c3aa 3510 QTAILQ_INIT(&vlans);
577c4af9 3511 QTAILQ_INIT(&non_vlan_clients);
5610c3aa 3512
f6b134ac
MM		 3513 if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1)
3514 return -1;
3515
dc1c9fe8
MM		 3516 if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
3517 return -1;
3518 }
3519
3520 net_check_clients();
3521
3522 return 0;
3523}
3524
7f161aae 3525int net_client_parse(QemuOptsList *opts_list, const char *optarg)
dc1c9fe8 3526{
a3a766e7 3527#if defined(CONFIG_SLIRP)
dc1c9fe8 3528 /* handle legacy -net channel,port:chr */
7f161aae
MM		 3529 if (!strcmp(opts_list->name, "net") &&
3530 !strncmp(optarg, "channel,", strlen("channel,"))) {
dc1c9fe8
MM		 3531 int ret;
3532
3533 optarg += strlen("channel,");
3534
3535 if (QTAILQ_EMPTY(&slirp_stacks)) {
3536 struct slirp_config_str *config;
3537
3538 config = qemu_malloc(sizeof(*config));
3539 pstrcpy(config->str, sizeof(config->str), optarg);
3540 config->flags = SLIRP_CFG_LEGACY;
3541 config->next = slirp_configs;
3542 slirp_configs = config;
3543 ret = 0;
3544 } else {
3545 ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
3546 }
3547
3548 return ret;
3549 }
a3a766e7 3550#endif
7f161aae 3551 if (!qemu_opts_parse(opts_list, optarg, "type")) {
dc1c9fe8
MM		 3552 return -1;
3553 }
3554
3555 return 0;
3556}
Qemu copy for testing