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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__
76682299 49#include "tap-linux.h"
24646c7e
BS		 50#endif
51#include <arpa/inet.h>
63a01ef8
AL		 52#include <dirent.h>
53#include <netdb.h>
54#include <sys/select.h>
71e72a19 55#ifdef CONFIG_BSD
63a01ef8 56#include <sys/stat.h>
c5e97233 57#if defined(__FreeBSD__) || defined(__DragonFly__)
63a01ef8 58#include <libutil.h>
24646c7e
BS		 59#else
60#include <util.h>
63a01ef8
AL		 61#endif
62#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
63#include <freebsd/stdlib.h>
64#else
65#ifdef __linux__
63a01ef8
AL		 66#include <pty.h>
67#include <malloc.h>
68#include <linux/rtc.h>
69
70/* For the benefit of older linux systems which don't supply it,
71 we use a local copy of hpet.h. */
72/* #include <linux/hpet.h> */
73#include "hpet.h"
74
75#include <linux/ppdev.h>
76#include <linux/parport.h>
77#endif
78#ifdef __sun__
79#include <sys/stat.h>
80#include <sys/ethernet.h>
81#include <sys/sockio.h>
82#include <netinet/arp.h>
83#include <netinet/in.h>
84#include <netinet/in_systm.h>
85#include <netinet/ip.h>
86#include <netinet/ip_icmp.h> // must come after ip.h
87#include <netinet/udp.h>
88#include <netinet/tcp.h>
89#include <net/if.h>
90#include <syslog.h>
91#include <stropts.h>
92#endif
93#endif
94#endif
95
63a01ef8
AL		 96#if defined(__OpenBSD__)
97#include <util.h>
98#endif
99
100#if defined(CONFIG_VDE)
101#include <libvdeplug.h>
102#endif
103
511d2b14
BS		 104#include "qemu-common.h"
105#include "net.h"
106#include "monitor.h"
107#include "sysemu.h"
108#include "qemu-timer.h"
109#include "qemu-char.h"
110#include "audio/audio.h"
111#include "qemu_socket.h"
bb9ea79e 112#include "qemu-log.h"
f83c6e10 113#include "qemu-config.h"
511d2b14 114
d918f23e 115#include "slirp/libslirp.h"
511d2b14 116
5610c3aa 117static QTAILQ_HEAD(, VLANState) vlans;
577c4af9 118static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
63a01ef8
AL		 119
120/***********************************************************/
121/* network device redirectors */
122
123#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
124static void hex_dump(FILE *f, const uint8_t *buf, int size)
125{
126 int len, i, j, c;
127
128 for(i=0;i<size;i+=16) {
129 len = size - i;
130 if (len > 16)
131 len = 16;
132 fprintf(f, "%08x ", i);
133 for(j=0;j<16;j++) {
134 if (j < len)
135 fprintf(f, " %02x", buf[i+j]);
136 else
137 fprintf(f, " ");
138 }
139 fprintf(f, " ");
140 for(j=0;j<len;j++) {
141 c = buf[i+j];
142 if (c < ' ' || c > '~')
143 c = '.';
144 fprintf(f, "%c", c);
145 }
146 fprintf(f, "\n");
147 }
148}
149#endif
150
151static int parse_macaddr(uint8_t *macaddr, const char *p)
152{
153 int i;
154 char *last_char;
155 long int offset;
156
157 errno = 0;
158 offset = strtol(p, &last_char, 0);
159 if (0 == errno && '\0' == *last_char &&
160 offset >= 0 && offset <= 0xFFFFFF) {
161 macaddr[3] = (offset & 0xFF0000) >> 16;
162 macaddr[4] = (offset & 0xFF00) >> 8;
163 macaddr[5] = offset & 0xFF;
164 return 0;
165 } else {
166 for(i = 0; i < 6; i++) {
167 macaddr[i] = strtol(p, (char **)&p, 16);
168 if (i == 5) {
169 if (*p != '\0')
170 return -1;
171 } else {
172 if (*p != ':' && *p != '-')
173 return -1;
174 p++;
175 }
176 }
177 return 0;
178 }
179
180 return -1;
181}
182
183static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
184{
185 const char *p, *p1;
186 int len;
187 p = *pp;
188 p1 = strchr(p, sep);
189 if (!p1)
190 return -1;
191 len = p1 - p;
192 p1++;
193 if (buf_size > 0) {
194 if (len > buf_size - 1)
195 len = buf_size - 1;
196 memcpy(buf, p, len);
197 buf[len] = '\0';
198 }
199 *pp = p1;
200 return 0;
201}
202
203int parse_host_src_port(struct sockaddr_in *haddr,
204 struct sockaddr_in *saddr,
205 const char *input_str)
206{
207 char *str = strdup(input_str);
208 char *host_str = str;
209 char *src_str;
210 const char *src_str2;
211 char *ptr;
212
213 /*
214 * Chop off any extra arguments at the end of the string which
215 * would start with a comma, then fill in the src port information
216 * if it was provided else use the "any address" and "any port".
217 */
218 if ((ptr = strchr(str,',')))
219 *ptr = '\0';
220
221 if ((src_str = strchr(input_str,'@'))) {
222 *src_str = '\0';
223 src_str++;
224 }
225
226 if (parse_host_port(haddr, host_str) < 0)
227 goto fail;
228
229 src_str2 = src_str;
230 if (!src_str || *src_str == '\0')
231 src_str2 = ":0";
232
233 if (parse_host_port(saddr, src_str2) < 0)
234 goto fail;
235
236 free(str);
237 return(0);
238
239fail:
240 free(str);
241 return -1;
242}
243
244int parse_host_port(struct sockaddr_in *saddr, const char *str)
245{
246 char buf[512];
247 struct hostent *he;
248 const char *p, *r;
249 int port;
250
251 p = str;
252 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
253 return -1;
254 saddr->sin_family = AF_INET;
255 if (buf[0] == '\0') {
256 saddr->sin_addr.s_addr = 0;
257 } else {
cd390083 258 if (qemu_isdigit(buf[0])) {
63a01ef8
AL		 259 if (!inet_aton(buf, &saddr->sin_addr))
260 return -1;
261 } else {
262 if ((he = gethostbyname(buf)) == NULL)
263 return - 1;
264 saddr->sin_addr = *(struct in_addr *)he->h_addr;
265 }
266 }
267 port = strtol(p, (char **)&r, 0);
268 if (r == p)
269 return -1;
270 saddr->sin_port = htons(port);
271 return 0;
272}
273
7cb7434b
AL		 274void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
275{
276 snprintf(vc->info_str, sizeof(vc->info_str),
4dda4063
AL		 277 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
278 vc->model,
7cb7434b
AL		 279 macaddr[0], macaddr[1], macaddr[2],
280 macaddr[3], macaddr[4], macaddr[5]);
281}
282
76d32cba
GH		 283void qemu_macaddr_default_if_unset(MACAddr *macaddr)
284{
285 static int index = 0;
286 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
287
288 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
289 return;
290 macaddr->a[0] = 0x52;
291 macaddr->a[1] = 0x54;
292 macaddr->a[2] = 0x00;
293 macaddr->a[3] = 0x12;
294 macaddr->a[4] = 0x34;
295 macaddr->a[5] = 0x56 + index++;
296}
297
676cff29
AL		 298static char *assign_name(VLANClientState *vc1, const char *model)
299{
300 VLANState *vlan;
301 char buf[256];
302 int id = 0;
303
5610c3aa 304 QTAILQ_FOREACH(vlan, &vlans, next) {
676cff29
AL		 305 VLANClientState *vc;
306
5610c3aa
MM		 307 QTAILQ_FOREACH(vc, &vlan->clients, next) {
308 if (vc != vc1 && strcmp(vc->model, model) == 0) {
676cff29 309 id++;
5610c3aa
MM		 310 }
311 }
676cff29
AL		 312 }
313
314 snprintf(buf, sizeof(buf), "%s.%d", model, id);
315
02374aa0 316 return qemu_strdup(buf);
676cff29
AL		 317}
318
9a6ecb30 319static ssize_t qemu_deliver_packet(VLANClientState *sender,
c0b8e49c 320 unsigned flags,
9a6ecb30
MM		 321 const uint8_t *data,
322 size_t size,
323 void *opaque);
324static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
c0b8e49c 325 unsigned flags,
9a6ecb30
MM		 326 const struct iovec *iov,
327 int iovcnt,
328 void *opaque);
329
bb6e6364
MM		 330VLANClientState *qemu_new_vlan_client(net_client_type type,
331 VLANState *vlan,
283c7c63 332 VLANClientState *peer,
bf38c1a0 333 const char *model,
7a9f6e4a 334 const char *name,
cda9046b
MM		 335 NetCanReceive *can_receive,
336 NetReceive *receive,
70783b9c 337 NetReceive *receive_raw,
cda9046b 338 NetReceiveIOV *receive_iov,
b946a153 339 NetCleanup *cleanup,
63a01ef8
AL		 340 void *opaque)
341{
5610c3aa
MM		 342 VLANClientState *vc;
343
63a01ef8 344 vc = qemu_mallocz(sizeof(VLANClientState));
5610c3aa 345
bb6e6364 346 vc->type = type;
02374aa0 347 vc->model = qemu_strdup(model);
7a9f6e4a 348 if (name)
02374aa0 349 vc->name = qemu_strdup(name);
7a9f6e4a
AL		 350 else
351 vc->name = assign_name(vc, model);
cda9046b
MM		 352 vc->can_receive = can_receive;
353 vc->receive = receive;
70783b9c 354 vc->receive_raw = receive_raw;
cda9046b 355 vc->receive_iov = receive_iov;
b946a153 356 vc->cleanup = cleanup;
63a01ef8 357 vc->opaque = opaque;
5610c3aa 358
d80b9fc6 359 if (vlan) {
283c7c63 360 assert(!peer);
d80b9fc6
MM		 361 vc->vlan = vlan;
362 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
577c4af9 363 } else {
283c7c63
MM		 364 if (peer) {
365 vc->peer = peer;
366 peer->peer = vc;
367 }
577c4af9 368 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
9a6ecb30
MM		 369
370 vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
371 qemu_deliver_packet_iov,
372 vc);
d80b9fc6 373 }
63a01ef8 374
63a01ef8
AL		 375 return vc;
376}
377
378void qemu_del_vlan_client(VLANClientState *vc)
379{
d80b9fc6
MM		 380 if (vc->vlan) {
381 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
577c4af9 382 } else {
9a6ecb30
MM		 383 if (vc->send_queue) {
384 qemu_del_net_queue(vc->send_queue);
385 }
577c4af9 386 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
283c7c63
MM		 387 if (vc->peer) {
388 vc->peer->peer = NULL;
389 }
d80b9fc6 390 }
63a01ef8 391
5610c3aa
MM		 392 if (vc->cleanup) {
393 vc->cleanup(vc);
394 }
395
396 qemu_free(vc->name);
397 qemu_free(vc->model);
398 qemu_free(vc);
63a01ef8
AL		 399}
400
8b13c4a7
AL		 401VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
402{
5610c3aa 403 VLANClientState *vc;
8b13c4a7 404
5610c3aa
MM		 405 QTAILQ_FOREACH(vc, &vlan->clients, next) {
406 if (vc->opaque == opaque) {
407 return vc;
408 }
409 }
8b13c4a7
AL		 410
411 return NULL;
412}
413
1a609520
JK		 414static VLANClientState *
415qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
416 const char *client_str)
417{
418 VLANState *vlan;
419 VLANClientState *vc;
420
421 vlan = qemu_find_vlan(vlan_id, 0);
422 if (!vlan) {
423 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
424 return NULL;
425 }
426
5610c3aa 427 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1a609520
JK		 428 if (!strcmp(vc->name, client_str)) {
429 break;
430 }
431 }
432 if (!vc) {
433 monitor_printf(mon, "can't find device %s on VLAN %d\n",
434 client_str, vlan_id);
435 }
436
437 return vc;
438}
439
2e1e0641 440int qemu_can_send_packet(VLANClientState *sender)
63a01ef8 441{
2e1e0641 442 VLANState *vlan = sender->vlan;
63a01ef8
AL		 443 VLANClientState *vc;
444
9a6ecb30
MM		 445 if (sender->peer) {
446 if (!sender->peer->can_receive ||
447 sender->peer->can_receive(sender->peer)) {
448 return 1;
449 } else {
450 return 0;
451 }
452 }
453
d80b9fc6
MM		 454 if (!sender->vlan) {
455 return 1;
456 }
457
5610c3aa 458 QTAILQ_FOREACH(vc, &vlan->clients, next) {
2e1e0641
MM		 459 if (vc == sender) {
460 continue;
461 }
462
cda9046b 463 /* no can_receive() handler, they can always receive */
e3f5ec2b 464 if (!vc->can_receive || vc->can_receive(vc)) {
2e1e0641 465 return 1;
63a01ef8
AL		 466 }
467 }
468 return 0;
469}
470
9a6ecb30 471static ssize_t qemu_deliver_packet(VLANClientState *sender,
c0b8e49c 472 unsigned flags,
9a6ecb30
MM		 473 const uint8_t *data,
474 size_t size,
475 void *opaque)
476{
477 VLANClientState *vc = opaque;
478
479 if (vc->link_down) {
480 return size;
481 }
482
ca77d175
MM		 483 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw)
484 return vc->receive_raw(vc, data, size);
485 else
486 return vc->receive(vc, data, size);
9a6ecb30
MM		 487}
488
f7105843 489static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
c0b8e49c 490 unsigned flags,
f7105843
MM		 491 const uint8_t *buf,
492 size_t size,
493 void *opaque)
63a01ef8 494{
f7105843 495 VLANState *vlan = opaque;
63a01ef8 496 VLANClientState *vc;
3e021d40 497 int ret = -1;
63a01ef8 498
f7105843 499 QTAILQ_FOREACH(vc, &vlan->clients, next) {
3e021d40
MM		 500 ssize_t len;
501
502 if (vc == sender) {
503 continue;
764a4d1d 504 }
3e021d40
MM		 505
506 if (vc->link_down) {
507 ret = size;
508 continue;
509 }
510
ca77d175
MM		 511 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw)
512 len = vc->receive_raw(vc, buf, size);
513 else
514 len = vc->receive(vc, buf, size);
3e021d40
MM		 515
516 ret = (ret >= 0) ? ret : len;
764a4d1d 517 }
3e021d40
MM		 518
519 return ret;
764a4d1d
AL		 520}
521
8cad5516
MM		 522void qemu_purge_queued_packets(VLANClientState *vc)
523{
9a6ecb30
MM		 524 NetQueue *queue;
525
526 if (!vc->peer && !vc->vlan) {
d80b9fc6 527 return;
9a6ecb30 528 }
d80b9fc6 529
9a6ecb30
MM		 530 if (vc->peer) {
531 queue = vc->peer->send_queue;
532 } else {
533 queue = vc->vlan->send_queue;
534 }
535
536 qemu_net_queue_purge(queue, vc);
8cad5516
MM		 537}
538
f3b6c7fc 539void qemu_flush_queued_packets(VLANClientState *vc)
e94667b9 540{
9a6ecb30
MM		 541 NetQueue *queue;
542
543 if (vc->vlan) {
544 queue = vc->vlan->send_queue;
545 } else {
546 queue = vc->send_queue;
547 }
d80b9fc6 548
9a6ecb30 549 qemu_net_queue_flush(queue);
e94667b9
MM		 550}
551
ca77d175
MM		 552static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
553 unsigned flags,
554 const uint8_t *buf, int size,
555 NetPacketSent *sent_cb)
764a4d1d 556{
9a6ecb30 557 NetQueue *queue;
436e5e53 558
63a01ef8 559#ifdef DEBUG_NET
d80b9fc6 560 printf("qemu_send_packet_async:\n");
63a01ef8
AL		 561 hex_dump(stdout, buf, size);
562#endif
f3b6c7fc 563
9a6ecb30
MM		 564 if (sender->link_down || (!sender->peer && !sender->vlan)) {
565 return size;
566 }
567
568 if (sender->peer) {
569 queue = sender->peer->send_queue;
570 } else {
571 queue = sender->vlan->send_queue;
572 }
573
ca77d175
MM		 574 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
575}
576
577ssize_t qemu_send_packet_async(VLANClientState *sender,
578 const uint8_t *buf, int size,
579 NetPacketSent *sent_cb)
580{
581 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
582 buf, size, sent_cb);
f3b6c7fc
MM		 583}
584
585void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
586{
587 qemu_send_packet_async(vc, buf, size, NULL);
63a01ef8
AL		 588}
589
ca77d175
MM		 590ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
591{
592 return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
593 buf, size, NULL);
594}
595
fbe78f4f
AL		 596static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
597 int iovcnt)
598{
599 uint8_t buffer[4096];
600 size_t offset = 0;
601 int i;
602
603 for (i = 0; i < iovcnt; i++) {
604 size_t len;
605
606 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
607 memcpy(buffer + offset, iov[i].iov_base, len);
608 offset += len;
609 }
610
f3b6c7fc 611 return vc->receive(vc, buffer, offset);
fbe78f4f
AL		 612}
613
e0e7877a
AL		 614static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
615{
616 size_t offset = 0;
617 int i;
618
619 for (i = 0; i < iovcnt; i++)
620 offset += iov[i].iov_len;
621 return offset;
622}
623
9a6ecb30 624static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
c0b8e49c 625 unsigned flags,
9a6ecb30
MM		 626 const struct iovec *iov,
627 int iovcnt,
628 void *opaque)
629{
630 VLANClientState *vc = opaque;
631
632 if (vc->link_down) {
633 return calc_iov_length(iov, iovcnt);
634 }
635
636 if (vc->receive_iov) {
637 return vc->receive_iov(vc, iov, iovcnt);
638 } else {
639 return vc_sendv_compat(vc, iov, iovcnt);
640 }
641}
642
f7105843 643static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
c0b8e49c 644 unsigned flags,
f7105843
MM		 645 const struct iovec *iov,
646 int iovcnt,
647 void *opaque)
fbe78f4f 648{
f7105843 649 VLANState *vlan = opaque;
fbe78f4f 650 VLANClientState *vc;
f7105843 651 ssize_t ret = -1;
e94667b9 652
f7105843 653 QTAILQ_FOREACH(vc, &vlan->clients, next) {
e94667b9
MM		 654 ssize_t len;
655
656 if (vc == sender) {
657 continue;
658 }
659
660 if (vc->link_down) {
661 ret = calc_iov_length(iov, iovcnt);
662 continue;
663 }
664
ca77d175
MM		 665 assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
666
e94667b9
MM		 667 if (vc->receive_iov) {
668 len = vc->receive_iov(vc, iov, iovcnt);
669 } else {
670 len = vc_sendv_compat(vc, iov, iovcnt);
671 }
672
673 ret = (ret >= 0) ? ret : len;
674 }
675
e94667b9
MM		 676 return ret;
677}
678
f3b6c7fc
MM		 679ssize_t qemu_sendv_packet_async(VLANClientState *sender,
680 const struct iovec *iov, int iovcnt,
681 NetPacketSent *sent_cb)
e94667b9 682{
9a6ecb30
MM		 683 NetQueue *queue;
684
685 if (sender->link_down || (!sender->peer && !sender->vlan)) {
e94667b9
MM		 686 return calc_iov_length(iov, iovcnt);
687 }
688
9a6ecb30
MM		 689 if (sender->peer) {
690 queue = sender->peer->send_queue;
691 } else {
692 queue = sender->vlan->send_queue;
693 }
694
c0b8e49c
MM		 695 return qemu_net_queue_send_iov(queue, sender,
696 QEMU_NET_PACKET_FLAG_NONE,
697 iov, iovcnt, sent_cb);
fbe78f4f
AL		 698}
699
f3b6c7fc
MM		 700ssize_t
701qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
702{
703 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
704}
705
63a01ef8
AL		 706#if defined(CONFIG_SLIRP)
707
708/* slirp network adapter */
709
c92ef6a2
JK		 710#define SLIRP_CFG_HOSTFWD 1
711#define SLIRP_CFG_LEGACY 2
ad196a9d 712
b8e8af38
JK		 713struct slirp_config_str {
714 struct slirp_config_str *next;
ad196a9d
JK		 715 int flags;
716 char str[1024];
c92ef6a2 717 int legacy_format;
b8e8af38
JK		 718};
719
9f8bd042 720typedef struct SlirpState {
72cf2d4f 721 QTAILQ_ENTRY(SlirpState) entry;
9f8bd042
JK		 722 VLANClientState *vc;
723 Slirp *slirp;
28432466
JK		 724#ifndef _WIN32
725 char smb_dir[128];
726#endif
9f8bd042
JK		 727} SlirpState;
728
ad196a9d
JK		 729static struct slirp_config_str *slirp_configs;
730const char *legacy_tftp_prefix;
731const char *legacy_bootp_filename;
72cf2d4f
BS		 732static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
733 QTAILQ_HEAD_INITIALIZER(slirp_stacks);
63a01ef8 734
fb12577c 735static int slirp_hostfwd(SlirpState *s, const char *redir_str,
0752706d 736 int legacy_format);
fb12577c 737static int slirp_guestfwd(SlirpState *s, const char *config_str,
3c6a0580 738 int legacy_format);
ad196a9d 739
c5b76b38 740#ifndef _WIN32
ad196a9d
JK		 741static const char *legacy_smb_export;
742
fb12577c 743static int slirp_smb(SlirpState *s, const char *exported_dir,
0752706d 744 struct in_addr vserver_addr);
28432466
JK		 745static void slirp_smb_cleanup(SlirpState *s);
746#else
747static inline void slirp_smb_cleanup(SlirpState *s) { }
c5b76b38 748#endif
b8e8af38 749
9f8bd042 750int slirp_can_output(void *opaque)
63a01ef8 751{
9f8bd042
JK		 752 SlirpState *s = opaque;
753
754 return qemu_can_send_packet(s->vc);
63a01ef8
AL		 755}
756
9f8bd042 757void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
63a01ef8 758{
9f8bd042
JK		 759 SlirpState *s = opaque;
760
63a01ef8
AL		 761#ifdef DEBUG_SLIRP
762 printf("slirp output:\n");
763 hex_dump(stdout, pkt, pkt_len);
764#endif
9f8bd042 765 qemu_send_packet(s->vc, pkt, pkt_len);
63a01ef8
AL		 766}
767
4f1c942b 768static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 769{
9f8bd042
JK		 770 SlirpState *s = vc->opaque;
771
63a01ef8
AL		 772#ifdef DEBUG_SLIRP
773 printf("slirp input:\n");
774 hex_dump(stdout, buf, size);
775#endif
9f8bd042 776 slirp_input(s->slirp, buf, size);
4f1c942b 777 return size;
63a01ef8
AL		 778}
779
8d6249a7
AL		 780static void net_slirp_cleanup(VLANClientState *vc)
781{
ad0d8c4c
JK		 782 SlirpState *s = vc->opaque;
783
784 slirp_cleanup(s->slirp);
28432466 785 slirp_smb_cleanup(s);
72cf2d4f 786 QTAILQ_REMOVE(&slirp_stacks, s, entry);
ad0d8c4c 787 qemu_free(s);
8d6249a7
AL		 788}
789
fb12577c 790static int net_slirp_init(VLANState *vlan, const char *model,
c92ef6a2
JK		 791 const char *name, int restricted,
792 const char *vnetwork, const char *vhost,
793 const char *vhostname, const char *tftp_export,
794 const char *bootfile, const char *vdhcp_start,
795 const char *vnameserver, const char *smb_export,
796 const char *vsmbserver)
63a01ef8 797{
ad0d8c4c 798 /* default settings according to historic slirp */
8389e7f4
AL		 799 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
800 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
ad0d8c4c
JK		 801 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
802 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
803 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
c92ef6a2 804#ifndef _WIN32
ad0d8c4c 805 struct in_addr smbsrv = { .s_addr = 0 };
c92ef6a2 806#endif
ad0d8c4c
JK		 807 SlirpState *s;
808 char buf[20];
809 uint32_t addr;
810 int shift;
811 char *end;
3a179c66 812 struct slirp_config_str *config;
ad0d8c4c
JK		 813
814 if (!tftp_export) {
815 tftp_export = legacy_tftp_prefix;
816 }
817 if (!bootfile) {
818 bootfile = legacy_bootp_filename;
819 }
c92ef6a2 820
ad0d8c4c
JK		 821 if (vnetwork) {
822 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
823 if (!inet_aton(vnetwork, &net)) {
824 return -1;
825 }
826 addr = ntohl(net.s_addr);
827 if (!(addr & 0x80000000)) {
828 mask.s_addr = htonl(0xff000000); /* class A */
829 } else if ((addr & 0xfff00000) == 0xac100000) {
830 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
831 } else if ((addr & 0xc0000000) == 0x80000000) {
832 mask.s_addr = htonl(0xffff0000); /* class B */
833 } else if ((addr & 0xffff0000) == 0xc0a80000) {
834 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
835 } else if ((addr & 0xffff0000) == 0xc6120000) {
836 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
837 } else if ((addr & 0xe0000000) == 0xe0000000) {
838 mask.s_addr = htonl(0xffffff00); /* class C */
c92ef6a2 839 } else {
ad0d8c4c
JK		 840 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
841 }
842 } else {
843 if (!inet_aton(buf, &net)) {
844 return -1;
845 }
846 shift = strtol(vnetwork, &end, 10);
847 if (*end != '\0') {
848 if (!inet_aton(vnetwork, &mask)) {
c92ef6a2 849 return -1;
c92ef6a2 850 }
ad0d8c4c
JK		 851 } else if (shift < 4 || shift > 32) {
852 return -1;
853 } else {
854 mask.s_addr = htonl(0xffffffff << (32 - shift));
c92ef6a2 855 }
c92ef6a2 856 }
ad0d8c4c
JK		 857 net.s_addr &= mask.s_addr;
858 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
859 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
860 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
861 }
c92ef6a2 862
ad0d8c4c
JK		 863 if (vhost && !inet_aton(vhost, &host)) {
864 return -1;
865 }
866 if ((host.s_addr & mask.s_addr) != net.s_addr) {
867 return -1;
868 }
c92ef6a2 869
ad0d8c4c
JK		 870 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
871 return -1;
872 }
873 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
874 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
875 return -1;
876 }
c92ef6a2 877
ad0d8c4c
JK		 878 if (vnameserver && !inet_aton(vnameserver, &dns)) {
879 return -1;
880 }
881 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
882 dns.s_addr == host.s_addr) {
883 return -1;
884 }
c92ef6a2
JK		 885
886#ifndef _WIN32
ad0d8c4c
JK		 887 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
888 return -1;
889 }
c92ef6a2
JK		 890#endif
891
ad0d8c4c
JK		 892 s = qemu_mallocz(sizeof(SlirpState));
893 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
894 tftp_export, bootfile, dhcp, dns, s);
72cf2d4f 895 QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
b8e8af38 896
3a179c66 897 for (config = slirp_configs; config; config = config->next) {
ad0d8c4c 898 if (config->flags & SLIRP_CFG_HOSTFWD) {
fb12577c 899 if (slirp_hostfwd(s, config->str,
0752706d
MA		 900 config->flags & SLIRP_CFG_LEGACY) < 0)
901 return -1;
ad0d8c4c 902 } else {
fb12577c 903 if (slirp_guestfwd(s, config->str,
0752706d
MA		 904 config->flags & SLIRP_CFG_LEGACY) < 0)
905 return -1;
b8e8af38 906 }
ad0d8c4c 907 }
b8e8af38 908#ifndef _WIN32
ad0d8c4c
JK		 909 if (!smb_export) {
910 smb_export = legacy_smb_export;
911 }
912 if (smb_export) {
fb12577c 913 if (slirp_smb(s, smb_export, smbsrv) < 0)
0752706d 914 return -1;
63a01ef8 915 }
ad0d8c4c 916#endif
b8e8af38 917
bb6e6364
MM		 918 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SLIRP,
919 vlan, NULL, model, name, NULL,
70783b9c 920 slirp_receive, NULL, NULL,
9f8bd042 921 net_slirp_cleanup, s);
fc57bc57
JK		 922 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
923 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
63a01ef8
AL		 924 return 0;
925}
926
f13b572c
JK		 927static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
928 const char *stack)
929{
930 VLANClientState *vc;
931
932 if (vlan) {
933 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
934 if (!vc) {
935 return NULL;
936 }
937 if (strcmp(vc->model, "user")) {
938 monitor_printf(mon, "invalid device specified\n");
939 return NULL;
940 }
941 return vc->opaque;
942 } else {
72cf2d4f 943 if (QTAILQ_EMPTY(&slirp_stacks)) {
f13b572c
JK		 944 monitor_printf(mon, "user mode network stack not in use\n");
945 return NULL;
946 }
72cf2d4f 947 return QTAILQ_FIRST(&slirp_stacks);
f13b572c
JK		 948 }
949}
950
1d4daa91 951void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
c1261d8d 952{
3c6a0580 953 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c1261d8d
AG		 954 int host_port;
955 char buf[256] = "";
f13b572c
JK		 956 const char *src_str, *p;
957 SlirpState *s;
c1261d8d 958 int is_udp = 0;
9c12a6f2 959 int err;
1d4daa91
LC		 960 const char *arg1 = qdict_get_str(qdict, "arg1");
961 const char *arg2 = qdict_get_try_str(qdict, "arg2");
962 const char *arg3 = qdict_get_try_str(qdict, "arg3");
c1261d8d 963
f13b572c
JK		 964 if (arg2) {
965 s = slirp_lookup(mon, arg1, arg2);
966 src_str = arg3;
967 } else {
968 s = slirp_lookup(mon, NULL, NULL);
969 src_str = arg1;
970 }
971 if (!s) {
c1261d8d 972 return;
f3546deb 973 }
c1261d8d 974
3c6a0580 975 if (!src_str || !src_str[0])
c1261d8d
AG		 976 goto fail_syntax;
977
f13b572c 978 p = src_str;
c1261d8d
AG		 979 get_str_sep(buf, sizeof(buf), &p, ':');
980
981 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
982 is_udp = 0;
983 } else if (!strcmp(buf, "udp")) {
984 is_udp = 1;
985 } else {
986 goto fail_syntax;
987 }
988
3c6a0580
JK		 989 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
990 goto fail_syntax;
991 }
992 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
993 goto fail_syntax;
994 }
995
c1261d8d
AG		 996 host_port = atoi(p);
997
72cf2d4f 998 err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
9f8bd042 999 host_addr, host_port);
c1261d8d 1000
9c12a6f2
JK		 1001 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
1002 err ? "removed" : "not found");
c1261d8d
AG		 1003 return;
1004
1005 fail_syntax:
1006 monitor_printf(mon, "invalid format\n");
1007}
1008
fb12577c 1009static int slirp_hostfwd(SlirpState *s, const char *redir_str,
0752706d 1010 int legacy_format)
63a01ef8 1011{
3c6a0580 1012 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c92ef6a2 1013 struct in_addr guest_addr = { .s_addr = 0 };
63a01ef8 1014 int host_port, guest_port;
b8e8af38 1015 const char *p;
c92ef6a2 1016 char buf[256];
b8e8af38 1017 int is_udp;
c92ef6a2 1018 char *end;
1c6ed9f3 1019
63a01ef8 1020 p = redir_str;
f13b572c 1021 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 1022 goto fail_syntax;
b8e8af38 1023 }
d4ebe193 1024 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
63a01ef8
AL		 1025 is_udp = 0;
1026 } else if (!strcmp(buf, "udp")) {
1027 is_udp = 1;
1028 } else {
d4ebe193 1029 goto fail_syntax;
63a01ef8
AL		 1030 }
1031
3c6a0580
JK		 1032 if (!legacy_format) {
1033 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1034 goto fail_syntax;
1035 }
1036 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
1037 goto fail_syntax;
1038 }
1039 }
1040
1041 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
d4ebe193 1042 goto fail_syntax;
b8e8af38 1043 }
c92ef6a2
JK		 1044 host_port = strtol(buf, &end, 0);
1045 if (*end != '\0' || host_port < 1 || host_port > 65535) {
d4ebe193 1046 goto fail_syntax;
b8e8af38 1047 }
63a01ef8 1048
b8e8af38 1049 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 1050 goto fail_syntax;
b8e8af38 1051 }
c92ef6a2 1052 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
d4ebe193 1053 goto fail_syntax;
b8e8af38 1054 }
63a01ef8 1055
c92ef6a2
JK		 1056 guest_port = strtol(p, &end, 0);
1057 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
d4ebe193 1058 goto fail_syntax;
b8e8af38 1059 }
63a01ef8 1060
9f8bd042
JK		 1061 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1062 guest_port) < 0) {
fb12577c
MA		 1063 qemu_error("could not set up host forwarding rule '%s'\n",
1064 redir_str);
0752706d 1065 return -1;
63a01ef8 1066 }
0752706d 1067 return 0;
d4ebe193
AL		 1068
1069 fail_syntax:
fb12577c 1070 qemu_error("invalid host forwarding rule '%s'\n", redir_str);
0752706d 1071 return -1;
63a01ef8
AL		 1072}
1073
1d4daa91 1074void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
b8e8af38 1075{
f13b572c
JK		 1076 const char *redir_str;
1077 SlirpState *s;
1d4daa91
LC		 1078 const char *arg1 = qdict_get_str(qdict, "arg1");
1079 const char *arg2 = qdict_get_try_str(qdict, "arg2");
1080 const char *arg3 = qdict_get_try_str(qdict, "arg3");
f13b572c
JK		 1081
1082 if (arg2) {
1083 s = slirp_lookup(mon, arg1, arg2);
1084 redir_str = arg3;
1085 } else {
1086 s = slirp_lookup(mon, NULL, NULL);
1087 redir_str = arg1;
1088 }
1089 if (s) {
fb12577c 1090 slirp_hostfwd(s, redir_str, 0);
b8e8af38
JK		 1091 }
1092
f3546deb
JK		 1093}
1094
0752706d 1095int net_slirp_redir(const char *redir_str)
f3546deb
JK		 1096{
1097 struct slirp_config_str *config;
1098
72cf2d4f 1099 if (QTAILQ_EMPTY(&slirp_stacks)) {
f3546deb
JK		 1100 config = qemu_malloc(sizeof(*config));
1101 pstrcpy(config->str, sizeof(config->str), redir_str);
3c6a0580 1102 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
f3546deb
JK		 1103 config->next = slirp_configs;
1104 slirp_configs = config;
0752706d 1105 return 0;
b8e8af38
JK		 1106 }
1107
fb12577c 1108 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
b8e8af38
JK		 1109}
1110
63a01ef8
AL		 1111#ifndef _WIN32
1112
63a01ef8 1113/* automatic user mode samba server configuration */
28432466 1114static void slirp_smb_cleanup(SlirpState *s)
63a01ef8 1115{
28432466 1116 char cmd[128];
09c18925 1117
28432466
JK		 1118 if (s->smb_dir[0] != '\0') {
1119 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1120 system(cmd);
1121 s->smb_dir[0] = '\0';
1122 }
63a01ef8
AL		 1123}
1124
fb12577c 1125static int slirp_smb(SlirpState* s, const char *exported_dir,
0752706d 1126 struct in_addr vserver_addr)
63a01ef8 1127{
28432466
JK		 1128 static int instance;
1129 char smb_conf[128];
1130 char smb_cmdline[128];
63a01ef8
AL		 1131 FILE *f;
1132
28432466
JK		 1133 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1134 (long)getpid(), instance++);
1135 if (mkdir(s->smb_dir, 0700) < 0) {
fb12577c 1136 qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
0752706d 1137 return -1;
63a01ef8 1138 }
28432466 1139 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
63a01ef8
AL		 1140
1141 f = fopen(smb_conf, "w");
1142 if (!f) {
28432466 1143 slirp_smb_cleanup(s);
fb12577c
MA		 1144 qemu_error("could not create samba server configuration file '%s'\n",
1145 smb_conf);
0752706d 1146 return -1;
63a01ef8
AL		 1147 }
1148 fprintf(f,
1149 "[global]\n"
1150 "private dir=%s\n"
1151 "smb ports=0\n"
1152 "socket address=127.0.0.1\n"
1153 "pid directory=%s\n"
1154 "lock directory=%s\n"
1155 "log file=%s/log.smbd\n"
1156 "smb passwd file=%s/smbpasswd\n"
1157 "security = share\n"
1158 "[qemu]\n"
1159 "path=%s\n"
1160 "read only=no\n"
1161 "guest ok=yes\n",
28432466
JK		 1162 s->smb_dir,
1163 s->smb_dir,
1164 s->smb_dir,
1165 s->smb_dir,
1166 s->smb_dir,
63a01ef8
AL		 1167 exported_dir
1168 );
1169 fclose(f);
63a01ef8
AL		 1170
1171 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1172 SMBD_COMMAND, smb_conf);
1173
bb53fc53 1174 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
28432466 1175 slirp_smb_cleanup(s);
fb12577c 1176 qemu_error("conflicting/invalid smbserver address\n");
0752706d 1177 return -1;
c92ef6a2 1178 }
0752706d 1179 return 0;
63a01ef8
AL		 1180}
1181
ad196a9d 1182/* automatic user mode samba server configuration (legacy interface) */
0752706d 1183int net_slirp_smb(const char *exported_dir)
b8e8af38 1184{
c92ef6a2
JK		 1185 struct in_addr vserver_addr = { .s_addr = 0 };
1186
ad196a9d 1187 if (legacy_smb_export) {
b8e8af38 1188 fprintf(stderr, "-smb given twice\n");
0752706d 1189 return -1;
b8e8af38 1190 }
ad196a9d 1191 legacy_smb_export = exported_dir;
72cf2d4f 1192 if (!QTAILQ_EMPTY(&slirp_stacks)) {
fb12577c 1193 return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
0752706d 1194 vserver_addr);
b8e8af38 1195 }
0752706d 1196 return 0;
b8e8af38
JK		 1197}
1198
63a01ef8 1199#endif /* !defined(_WIN32) */
b8e8af38 1200
c92ef6a2 1201struct GuestFwd {
8ca9217d 1202 CharDriverState *hd;
c92ef6a2 1203 struct in_addr server;
8ca9217d 1204 int port;
9f8bd042 1205 Slirp *slirp;
511d2b14 1206};
8ca9217d 1207
c92ef6a2 1208static int guestfwd_can_read(void *opaque)
8ca9217d 1209{
c92ef6a2 1210 struct GuestFwd *fwd = opaque;
9f8bd042 1211 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
8ca9217d
AL		 1212}
1213
c92ef6a2 1214static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
8ca9217d 1215{
c92ef6a2 1216 struct GuestFwd *fwd = opaque;
9f8bd042 1217 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
8ca9217d
AL		 1218}
1219
fb12577c 1220static int slirp_guestfwd(SlirpState *s, const char *config_str,
0752706d 1221 int legacy_format)
ad196a9d 1222{
c92ef6a2
JK		 1223 struct in_addr server = { .s_addr = 0 };
1224 struct GuestFwd *fwd;
1225 const char *p;
1226 char buf[128];
1227 char *end;
ad196a9d
JK		 1228 int port;
1229
c92ef6a2
JK		 1230 p = config_str;
1231 if (legacy_format) {
1232 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1233 goto fail_syntax;
1234 }
1235 } else {
1236 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1237 goto fail_syntax;
1238 }
1239 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1240 goto fail_syntax;
1241 }
1242 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1243 goto fail_syntax;
1244 }
1245 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1246 goto fail_syntax;
1247 }
1248 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1249 goto fail_syntax;
1250 }
1251 }
1252 port = strtol(buf, &end, 10);
1253 if (*end != '\0' || port < 1 || port > 65535) {
1254 goto fail_syntax;
ad196a9d 1255 }
ad196a9d 1256
c92ef6a2
JK		 1257 fwd = qemu_malloc(sizeof(struct GuestFwd));
1258 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1259 fwd->hd = qemu_chr_open(buf, p, NULL);
1260 if (!fwd->hd) {
fb12577c 1261 qemu_error("could not open guest forwarding device '%s'\n", buf);
c92ef6a2 1262 qemu_free(fwd);
0752706d 1263 return -1;
ad196a9d 1264 }
ad196a9d 1265
bb53fc53 1266 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
fb12577c
MA		 1267 qemu_error("conflicting/invalid host:port in guest forwarding "
1268 "rule '%s'\n", config_str);
c92ef6a2 1269 qemu_free(fwd);
0752706d 1270 return -1;
c92ef6a2 1271 }
bb53fc53
JK		 1272 fwd->server = server;
1273 fwd->port = port;
1274 fwd->slirp = s->slirp;
1275
c92ef6a2
JK		 1276 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1277 NULL, fwd);
0752706d 1278 return 0;
c92ef6a2
JK		 1279
1280 fail_syntax:
fb12577c 1281 qemu_error("invalid guest forwarding rule '%s'\n", config_str);
0752706d 1282 return -1;
ad196a9d
JK		 1283}
1284
6dbe553f
JK		 1285void do_info_usernet(Monitor *mon)
1286{
b1c99fcd 1287 SlirpState *s;
9f8bd042 1288
72cf2d4f 1289 QTAILQ_FOREACH(s, &slirp_stacks, entry) {
b1c99fcd
JK		 1290 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1291 slirp_connection_info(s->slirp, mon);
9f8bd042 1292 }
6dbe553f
JK		 1293}
1294
63a01ef8
AL		 1295#endif /* CONFIG_SLIRP */
1296
24e32363 1297#if defined(_WIN32)
6c9f58ba
SS		 1298int tap_has_ufo(VLANClientState *vc)
1299{
1300 return 0;
1301}
24e32363
MM		 1302int tap_has_vnet_hdr(VLANClientState *vc)
1303{
1304 return 0;
1305}
1306void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr)
1307{
1308}
6c9f58ba
SS		 1309void tap_set_offload(VLANClientState *vc, int csum, int tso4,
1310 int tso6, int ecn, int ufo)
b1c28b46
MM		 1311{
1312}
24e32363 1313#else /* !defined(_WIN32) */
63a01ef8 1314
8e0f8e5b
MM		 1315/* Maximum GSO packet size (64k) plus plenty of room for
1316 * the ethernet and virtio_net headers
1317 */
1318#define TAP_BUFSIZE (4096 + 65536)
1319
63a01ef8
AL		 1320typedef struct TAPState {
1321 VLANClientState *vc;
1322 int fd;
1323 char down_script[1024];
973cbd37 1324 char down_script_arg[128];
8e0f8e5b 1325 uint8_t buf[TAP_BUFSIZE];
b664e367 1326 unsigned int read_poll : 1;
1f7babf6 1327 unsigned int write_poll : 1;
8e0f8e5b 1328 unsigned int has_vnet_hdr : 1;
24e32363 1329 unsigned int using_vnet_hdr : 1;
6c9f58ba 1330 unsigned int has_ufo: 1;
63a01ef8
AL		 1331} TAPState;
1332
b946a153
AL		 1333static int launch_script(const char *setup_script, const char *ifname, int fd);
1334
b664e367
MM		 1335static int tap_can_send(void *opaque);
1336static void tap_send(void *opaque);
1f7babf6 1337static void tap_writable(void *opaque);
b664e367
MM		 1338
1339static void tap_update_fd_handler(TAPState *s)
1340{
1341 qemu_set_fd_handler2(s->fd,
1342 s->read_poll ? tap_can_send : NULL,
1343 s->read_poll ? tap_send : NULL,
1f7babf6 1344 s->write_poll ? tap_writable : NULL,
b664e367
MM		 1345 s);
1346}
1347
1348static void tap_read_poll(TAPState *s, int enable)
1349{
1350 s->read_poll = !!enable;
1351 tap_update_fd_handler(s);
1352}
1353
1f7babf6
MM		 1354static void tap_write_poll(TAPState *s, int enable)
1355{
1356 s->write_poll = !!enable;
1357 tap_update_fd_handler(s);
1358}
1359
1360static void tap_writable(void *opaque)
1361{
1362 TAPState *s = opaque;
1363
1364 tap_write_poll(s, 0);
1365
1366 qemu_flush_queued_packets(s->vc);
1367}
1368
38c75be3 1369static ssize_t tap_write_packet(TAPState *s, const struct iovec *iov, int iovcnt)
b535b7b2 1370{
b535b7b2
AL		 1371 ssize_t len;
1372
1373 do {
1374 len = writev(s->fd, iov, iovcnt);
1f7babf6
MM		 1375 } while (len == -1 && errno == EINTR);
1376
1377 if (len == -1 && errno == EAGAIN) {
1378 tap_write_poll(s, 1);
1379 return 0;
1380 }
b535b7b2
AL		 1381
1382 return len;
1383}
b535b7b2 1384
38c75be3
MM		 1385static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1386 int iovcnt)
1387{
1388 TAPState *s = vc->opaque;
8e0f8e5b
MM		 1389 const struct iovec *iovp = iov;
1390 struct iovec iov_copy[iovcnt + 1];
1391 struct virtio_net_hdr hdr = { 0, };
38c75be3 1392
24e32363 1393 if (s->has_vnet_hdr && !s->using_vnet_hdr) {
8e0f8e5b
MM		 1394 iov_copy[0].iov_base = &hdr;
1395 iov_copy[0].iov_len = sizeof(hdr);
1396 memcpy(&iov_copy[1], iov, iovcnt * sizeof(*iov));
1397 iovp = iov_copy;
1398 iovcnt++;
1399 }
1400
1401 return tap_write_packet(s, iovp, iovcnt);
38c75be3
MM		 1402}
1403
2596774a 1404static ssize_t tap_receive_raw(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1405{
e3f5ec2b 1406 TAPState *s = vc->opaque;
8e0f8e5b 1407 struct iovec iov[2];
38c75be3 1408 int iovcnt = 0;
8e0f8e5b
MM		 1409 struct virtio_net_hdr hdr = { 0, };
1410
2596774a 1411 if (s->has_vnet_hdr) {
8e0f8e5b
MM		 1412 iov[iovcnt].iov_base = &hdr;
1413 iov[iovcnt].iov_len = sizeof(hdr);
1414 iovcnt++;
1415 }
4f1c942b 1416
38c75be3
MM		 1417 iov[iovcnt].iov_base = (char *)buf;
1418 iov[iovcnt].iov_len = size;
1419 iovcnt++;
4f1c942b 1420
38c75be3 1421 return tap_write_packet(s, iov, iovcnt);
63a01ef8
AL		 1422}
1423
2596774a
MM		 1424static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1425{
1426 TAPState *s = vc->opaque;
1427 struct iovec iov[1];
1428
1429 if (s->has_vnet_hdr && !s->using_vnet_hdr) {
1430 return tap_receive_raw(vc, buf, size);
1431 }
1432
1433 iov[0].iov_base = (char *)buf;
1434 iov[0].iov_len = size;
1435
1436 return tap_write_packet(s, iov, 1);
1437}
1438
3471b757
MM		 1439static int tap_can_send(void *opaque)
1440{
1441 TAPState *s = opaque;
1442
1443 return qemu_can_send_packet(s->vc);
1444}
1445
63a01ef8 1446#ifdef __sun__
5a6d8815
MM		 1447static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1448{
63a01ef8
AL		 1449 struct strbuf sbuf;
1450 int f = 0;
5a6d8815
MM		 1451
1452 sbuf.maxlen = maxlen;
3f4cb3d3 1453 sbuf.buf = (char *)buf;
5a6d8815
MM		 1454
1455 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1456}
63a01ef8 1457#else
5a6d8815
MM		 1458static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1459{
1460 return read(tapfd, buf, maxlen);
1461}
63a01ef8 1462#endif
5a6d8815 1463
783527a9 1464static void tap_send_completed(VLANClientState *vc, ssize_t len)
e19eb224
MM		 1465{
1466 TAPState *s = vc->opaque;
b664e367 1467 tap_read_poll(s, 1);
e19eb224
MM		 1468}
1469
5a6d8815
MM		 1470static void tap_send(void *opaque)
1471{
1472 TAPState *s = opaque;
5a6d8815
MM		 1473 int size;
1474
e19eb224 1475 do {
8e0f8e5b
MM		 1476 uint8_t *buf = s->buf;
1477
e19eb224
MM		 1478 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1479 if (size <= 0) {
1480 break;
1481 }
1482
24e32363 1483 if (s->has_vnet_hdr && !s->using_vnet_hdr) {
8e0f8e5b
MM		 1484 buf += sizeof(struct virtio_net_hdr);
1485 size -= sizeof(struct virtio_net_hdr);
1486 }
1487
1488 size = qemu_send_packet_async(s->vc, buf, size, tap_send_completed);
e19eb224 1489 if (size == 0) {
b664e367 1490 tap_read_poll(s, 0);
e19eb224
MM		 1491 }
1492 } while (size > 0);
63a01ef8
AL		 1493}
1494
fc5b81d1
MM		 1495/* sndbuf should be set to a value lower than the tx queue
1496 * capacity of any destination network interface.
1497 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1498 * a good default, given a 1500 byte MTU.
1499 */
1500#define TAP_DEFAULT_SNDBUF 1024*1024
1501
8a1c5235 1502static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
fc5b81d1 1503{
8a1c5235 1504 int sndbuf;
fc5b81d1 1505
8a1c5235 1506 sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF);
fc5b81d1
MM		 1507 if (!sndbuf) {
1508 sndbuf = INT_MAX;
1509 }
1510
8a1c5235 1511 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) {
fb12577c 1512 qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno));
0752706d 1513 return -1;
0df0ff6d 1514 }
0752706d 1515 return 0;
fc5b81d1 1516}
0df0ff6d 1517
6c9f58ba
SS		 1518int tap_has_ufo(VLANClientState *vc)
1519{
1520 TAPState *s = vc->opaque;
1521
1522 assert(vc->type == NET_CLIENT_TYPE_TAP);
1523
1524 return s->has_ufo;
1525}
1526
24e32363
MM		 1527int tap_has_vnet_hdr(VLANClientState *vc)
1528{
1529 TAPState *s = vc->opaque;
1530
1531 assert(vc->type == NET_CLIENT_TYPE_TAP);
1532
1533 return s->has_vnet_hdr;
1534}
1535
1536void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr)
1537{
1538 TAPState *s = vc->opaque;
1539
1540 using_vnet_hdr = using_vnet_hdr != 0;
1541
1542 assert(vc->type == NET_CLIENT_TYPE_TAP);
1543 assert(s->has_vnet_hdr == using_vnet_hdr);
1544
1545 s->using_vnet_hdr = using_vnet_hdr;
1546}
1547
8e0f8e5b
MM		 1548static int tap_probe_vnet_hdr(int fd)
1549{
1550 struct ifreq ifr;
1551
1552 if (ioctl(fd, TUNGETIFF, &ifr) != 0) {
1553 qemu_error("TUNGETIFF ioctl() failed: %s\n", strerror(errno));
1554 return 0;
1555 }
1556
1557 return ifr.ifr_flags & IFF_VNET_HDR;
1558}
1559
6c9f58ba
SS		 1560void tap_set_offload(VLANClientState *vc, int csum, int tso4,
1561 int tso6, int ecn, int ufo)
b1c28b46
MM		 1562{
1563 TAPState *s = vc->opaque;
1564 unsigned int offload = 0;
1565
1566 if (csum) {
1567 offload |= TUN_F_CSUM;
1568 if (tso4)
1569 offload |= TUN_F_TSO4;
1570 if (tso6)
1571 offload |= TUN_F_TSO6;
1572 if ((tso4 || tso6) && ecn)
1573 offload |= TUN_F_TSO_ECN;
6c9f58ba
SS		 1574 if (ufo)
1575 offload |= TUN_F_UFO;
b1c28b46
MM		 1576 }
1577
1578 if (ioctl(s->fd, TUNSETOFFLOAD, offload) != 0) {
6c9f58ba
SS		 1579 offload &= ~TUN_F_UFO;
1580 if (ioctl(s->fd, TUNSETOFFLOAD, offload) != 0) {
1581 fprintf(stderr, "TUNSETOFFLOAD ioctl() failed: %s\n",
1582 strerror(errno));
1583 }
b1c28b46
MM		 1584 }
1585}
1586
b946a153
AL		 1587static void tap_cleanup(VLANClientState *vc)
1588{
1589 TAPState *s = vc->opaque;
1590
b9adce2c
MM		 1591 qemu_purge_queued_packets(vc);
1592
b946a153
AL		 1593 if (s->down_script[0])
1594 launch_script(s->down_script, s->down_script_arg, s->fd);
1595
b664e367 1596 tap_read_poll(s, 0);
1f7babf6 1597 tap_write_poll(s, 0);
b946a153
AL		 1598 close(s->fd);
1599 qemu_free(s);
1600}
1601
63a01ef8
AL		 1602/* fd support */
1603
7a9f6e4a
AL		 1604static TAPState *net_tap_fd_init(VLANState *vlan,
1605 const char *model,
1606 const char *name,
8e0f8e5b
MM		 1607 int fd,
1608 int vnet_hdr)
63a01ef8
AL		 1609{
1610 TAPState *s;
6c9f58ba 1611 unsigned int offload;
63a01ef8
AL		 1612
1613 s = qemu_mallocz(sizeof(TAPState));
63a01ef8 1614 s->fd = fd;
8e0f8e5b 1615 s->has_vnet_hdr = vnet_hdr != 0;
24e32363 1616 s->using_vnet_hdr = 0;
bb6e6364
MM		 1617 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_TAP,
1618 vlan, NULL, model, name, NULL,
2596774a
MM		 1619 tap_receive, tap_receive_raw,
1620 tap_receive_iov, tap_cleanup, s);
6c9f58ba
SS		 1621 s->has_ufo = 0;
1622 /* Check if tap supports UFO */
1623 offload = TUN_F_CSUM | TUN_F_UFO;
1624 if (ioctl(s->fd, TUNSETOFFLOAD, offload) == 0)
1625 s->has_ufo = 1;
1626 tap_set_offload(s->vc, 0, 0, 0, 0, 0);
b664e367 1627 tap_read_poll(s, 1);
63a01ef8
AL		 1628 return s;
1629}
1630
71e72a19 1631#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
baf74c95
MM		 1632static int tap_open(char *ifname, int ifname_size,
1633 int *vnet_hdr, int vnet_hdr_required)
63a01ef8
AL		 1634{
1635 int fd;
1636 char *dev;
1637 struct stat s;
1638
1639 TFR(fd = open("/dev/tap", O_RDWR));
1640 if (fd < 0) {
1641 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1642 return -1;
1643 }
1644
1645 fstat(fd, &s);
1646 dev = devname(s.st_rdev, S_IFCHR);
1647 pstrcpy(ifname, ifname_size, dev);
1648
1649 fcntl(fd, F_SETFL, O_NONBLOCK);
1650 return fd;
1651}
1652#elif defined(__sun__)
1653#define TUNNEWPPA (('T'<<16) | 0x0001)
1654/*
1655 * Allocate TAP device, returns opened fd.
1656 * Stores dev name in the first arg(must be large enough).
1657 */
3f4cb3d3 1658static int tap_alloc(char *dev, size_t dev_size)
63a01ef8
AL		 1659{
1660 int tap_fd, if_fd, ppa = -1;
1661 static int ip_fd = 0;
1662 char *ptr;
1663
1664 static int arp_fd = 0;
1665 int ip_muxid, arp_muxid;
1666 struct strioctl strioc_if, strioc_ppa;
1667 int link_type = I_PLINK;;
1668 struct lifreq ifr;
1669 char actual_name[32] = "";
1670
1671 memset(&ifr, 0x0, sizeof(ifr));
1672
1673 if( *dev ){
1674 ptr = dev;
47398b9c 1675 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
63a01ef8
AL		 1676 ppa = atoi(ptr);
1677 }
1678
1679 /* Check if IP device was opened */
1680 if( ip_fd )
1681 close(ip_fd);
1682
1683 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1684 if (ip_fd < 0) {
1685 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1686 return -1;
1687 }
1688
1689 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1690 if (tap_fd < 0) {
1691 syslog(LOG_ERR, "Can't open /dev/tap");
1692 return -1;
1693 }
1694
1695 /* Assign a new PPA and get its unit number. */
1696 strioc_ppa.ic_cmd = TUNNEWPPA;
1697 strioc_ppa.ic_timout = 0;
1698 strioc_ppa.ic_len = sizeof(ppa);
1699 strioc_ppa.ic_dp = (char *)&ppa;
1700 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1701 syslog (LOG_ERR, "Can't assign new interface");
1702
1703 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1704 if (if_fd < 0) {
1705 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1706 return -1;
1707 }
1708 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1709 syslog(LOG_ERR, "Can't push IP module");
1710 return -1;
1711 }
1712
1713 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1714 syslog(LOG_ERR, "Can't get flags\n");
1715
1716 snprintf (actual_name, 32, "tap%d", ppa);
1717 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1718
1719 ifr.lifr_ppa = ppa;
1720 /* Assign ppa according to the unit number returned by tun device */
1721
1722 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1723 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1724 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1725 syslog (LOG_ERR, "Can't get flags\n");
1726 /* Push arp module to if_fd */
1727 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1728 syslog (LOG_ERR, "Can't push ARP module (2)");
1729
1730 /* Push arp module to ip_fd */
1731 if (ioctl (ip_fd, I_POP, NULL) < 0)
1732 syslog (LOG_ERR, "I_POP failed\n");
1733 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1734 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1735 /* Open arp_fd */
1736 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1737 if (arp_fd < 0)
1738 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1739
1740 /* Set ifname to arp */
1741 strioc_if.ic_cmd = SIOCSLIFNAME;
1742 strioc_if.ic_timout = 0;
1743 strioc_if.ic_len = sizeof(ifr);
1744 strioc_if.ic_dp = (char *)&ifr;
1745 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1746 syslog (LOG_ERR, "Can't set ifname to arp\n");
1747 }
1748
1749 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1750 syslog(LOG_ERR, "Can't link TAP device to IP");
1751 return -1;
1752 }
1753
1754 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1755 syslog (LOG_ERR, "Can't link TAP device to ARP");
1756
1757 close (if_fd);
1758
1759 memset(&ifr, 0x0, sizeof(ifr));
1760 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1761 ifr.lifr_ip_muxid = ip_muxid;
1762 ifr.lifr_arp_muxid = arp_muxid;
1763
1764 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1765 {
1766 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1767 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1768 syslog (LOG_ERR, "Can't set multiplexor id");
1769 }
1770
1771 snprintf(dev, dev_size, "tap%d", ppa);
1772 return tap_fd;
1773}
1774
baf74c95
MM		 1775static int tap_open(char *ifname, int ifname_size,
1776 int *vnet_hdr, int vnet_hdr_required)
63a01ef8
AL		 1777{
1778 char dev[10]="";
1779 int fd;
1780 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1781 fprintf(stderr, "Cannot allocate TAP device\n");
1782 return -1;
1783 }
1784 pstrcpy(ifname, ifname_size, dev);
1785 fcntl(fd, F_SETFL, O_NONBLOCK);
1786 return fd;
1787}
b29fe3ed 1788#elif defined (_AIX)
baf74c95
MM		 1789static int tap_open(char *ifname, int ifname_size,
1790 int *vnet_hdr, int vnet_hdr_required)
b29fe3ed 1791{
1792 fprintf (stderr, "no tap on AIX\n");
1793 return -1;
1794}
63a01ef8 1795#else
baf74c95
MM		 1796static int tap_open(char *ifname, int ifname_size,
1797 int *vnet_hdr, int vnet_hdr_required)
63a01ef8
AL		 1798{
1799 struct ifreq ifr;
1800 int fd, ret;
1801
1802 TFR(fd = open("/dev/net/tun", O_RDWR));
1803 if (fd < 0) {
1804 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1805 return -1;
1806 }
1807 memset(&ifr, 0, sizeof(ifr));
1808 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
8e0f8e5b 1809
baf74c95 1810 if (*vnet_hdr) {
8e0f8e5b
MM		 1811 unsigned int features;
1812
1813 if (ioctl(fd, TUNGETFEATURES, &features) == 0 &&
1814 features & IFF_VNET_HDR) {
1815 *vnet_hdr = 1;
1816 ifr.ifr_flags |= IFF_VNET_HDR;
1817 }
baf74c95
MM		 1818
1819 if (vnet_hdr_required && !*vnet_hdr) {
1820 qemu_error("vnet_hdr=1 requested, but no kernel "
1821 "support for IFF_VNET_HDR available");
1822 close(fd);
1823 return -1;
1824 }
8e0f8e5b
MM		 1825 }
1826
63a01ef8
AL		 1827 if (ifname[0] != '\0')
1828 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1829 else
1830 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1831 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1832 if (ret != 0) {
1833 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1834 close(fd);
1835 return -1;
1836 }
1837 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1838 fcntl(fd, F_SETFL, O_NONBLOCK);
1839 return fd;
1840}
1841#endif
1842
1843static int launch_script(const char *setup_script, const char *ifname, int fd)
1844{
7c3370d4 1845 sigset_t oldmask, mask;
63a01ef8
AL		 1846 int pid, status;
1847 char *args[3];
1848 char **parg;
1849
7c3370d4
JK		 1850 sigemptyset(&mask);
1851 sigaddset(&mask, SIGCHLD);
1852 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1853
1854 /* try to launch network script */
1855 pid = fork();
1856 if (pid == 0) {
1857 int open_max = sysconf(_SC_OPEN_MAX), i;
1858
1859 for (i = 0; i < open_max; i++) {
1860 if (i != STDIN_FILENO &&
1861 i != STDOUT_FILENO &&
1862 i != STDERR_FILENO &&
1863 i != fd) {
1864 close(i);
63a01ef8
AL		 1865 }
1866 }
7c3370d4
JK		 1867 parg = args;
1868 *parg++ = (char *)setup_script;
1869 *parg++ = (char *)ifname;
1870 *parg++ = NULL;
1871 execv(setup_script, args);
1872 _exit(1);
1873 } else if (pid > 0) {
1874 while (waitpid(pid, &status, 0) != pid) {
1875 /* loop */
1876 }
1877 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1878
1879 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1880 return 0;
1881 }
1882 }
1883 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1884 return -1;
63a01ef8
AL		 1885}
1886
424a7f96 1887static int net_tap_init(QemuOpts *opts, int *vnet_hdr)
63a01ef8 1888{
baf74c95 1889 int fd, vnet_hdr_required;
424a7f96
MM		 1890 char ifname[128] = {0,};
1891 const char *setup_script;
63a01ef8 1892
424a7f96
MM		 1893 if (qemu_opt_get(opts, "ifname")) {
1894 pstrcpy(ifname, sizeof(ifname), qemu_opt_get(opts, "ifname"));
1895 }
63a01ef8 1896
baf74c95
MM		 1897 *vnet_hdr = qemu_opt_get_bool(opts, "vnet_hdr", 1);
1898 if (qemu_opt_get(opts, "vnet_hdr")) {
1899 vnet_hdr_required = *vnet_hdr;
1900 } else {
1901 vnet_hdr_required = 0;
1902 }
1903
1904 TFR(fd = tap_open(ifname, sizeof(ifname), vnet_hdr, vnet_hdr_required));
424a7f96
MM		 1905 if (fd < 0) {
1906 return -1;
63a01ef8 1907 }
424a7f96
MM		 1908
1909 setup_script = qemu_opt_get(opts, "script");
1910 if (setup_script &&
1911 setup_script[0] != '\0' &&
1912 strcmp(setup_script, "no") != 0 &&
1913 launch_script(setup_script, ifname, fd)) {
1914 close(fd);
1915 return -1;
973cbd37 1916 }
424a7f96
MM		 1917
1918 qemu_opt_set(opts, "ifname", ifname);
1919
1920 return fd;
63a01ef8
AL		 1921}
1922
1923#endif /* !_WIN32 */
1924
1925#if defined(CONFIG_VDE)
1926typedef struct VDEState {
1927 VLANClientState *vc;
1928 VDECONN *vde;
1929} VDEState;
1930
1931static void vde_to_qemu(void *opaque)
1932{
1933 VDEState *s = opaque;
1934 uint8_t buf[4096];
1935 int size;
1936
cc63bb0f 1937 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
63a01ef8
AL		 1938 if (size > 0) {
1939 qemu_send_packet(s->vc, buf, size);
1940 }
1941}
1942
4f1c942b 1943static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1944{
e3f5ec2b 1945 VDEState *s = vc->opaque;
068daedd 1946 ssize_t ret;
4f1c942b
MM		 1947
1948 do {
1949 ret = vde_send(s->vde, (const char *)buf, size, 0);
1950 } while (ret < 0 && errno == EINTR);
1951
1952 return ret;
63a01ef8
AL		 1953}
1954
b946a153
AL		 1955static void vde_cleanup(VLANClientState *vc)
1956{
1957 VDEState *s = vc->opaque;
1958 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1959 vde_close(s->vde);
1960 qemu_free(s);
1961}
1962
7a9f6e4a
AL		 1963static int net_vde_init(VLANState *vlan, const char *model,
1964 const char *name, const char *sock,
bf38c1a0 1965 int port, const char *group, int mode)
63a01ef8
AL		 1966{
1967 VDEState *s;
dd51058d
MM		 1968 char *init_group = (char *)group;
1969 char *init_sock = (char *)sock;
63a01ef8
AL		 1970
1971 struct vde_open_args args = {
1972 .port = port,
1973 .group = init_group,
1974 .mode = mode,
1975 };
1976
1977 s = qemu_mallocz(sizeof(VDEState));
cc63bb0f 1978 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
63a01ef8
AL		 1979 if (!s->vde){
1980 free(s);
1981 return -1;
1982 }
bb6e6364
MM		 1983 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_VDE,
1984 vlan, NULL, model, name, NULL,
70783b9c 1985 vde_receive, NULL, NULL,
283c7c63 1986 vde_cleanup, s);
63a01ef8 1987 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
7cb7434b 1988 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
63a01ef8
AL		 1989 sock, vde_datafd(s->vde));
1990 return 0;
1991}
1992#endif
1993
1994/* network connection */
1995typedef struct NetSocketState {
1996 VLANClientState *vc;
1997 int fd;
1998 int state; /* 0 = getting length, 1 = getting data */
abcd2baa
AL		 1999 unsigned int index;
2000 unsigned int packet_len;
63a01ef8
AL		 2001 uint8_t buf[4096];
2002 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
2003} NetSocketState;
2004
2005typedef struct NetSocketListenState {
2006 VLANState *vlan;
bf38c1a0 2007 char *model;
7a9f6e4a 2008 char *name;
63a01ef8
AL		 2009 int fd;
2010} NetSocketListenState;
2011
2012/* XXX: we consider we can send the whole packet without blocking */
4f1c942b 2013static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 2014{
e3f5ec2b 2015 NetSocketState *s = vc->opaque;
63a01ef8
AL		 2016 uint32_t len;
2017 len = htonl(size);
2018
2019 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
4f1c942b 2020 return send_all(s->fd, buf, size);
63a01ef8
AL		 2021}
2022
4f1c942b 2023static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 2024{
e3f5ec2b 2025 NetSocketState *s = vc->opaque;
4f1c942b 2026
70503264 2027 return sendto(s->fd, (const void *)buf, size, 0,
4f1c942b 2028 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
63a01ef8
AL		 2029}
2030
2031static void net_socket_send(void *opaque)
2032{
2033 NetSocketState *s = opaque;
abcd2baa
AL		 2034 int size, err;
2035 unsigned l;
63a01ef8
AL		 2036 uint8_t buf1[4096];
2037 const uint8_t *buf;
2038
c5b76b38 2039 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
63a01ef8
AL		 2040 if (size < 0) {
2041 err = socket_error();
2042 if (err != EWOULDBLOCK)
2043 goto eoc;
2044 } else if (size == 0) {
2045 /* end of connection */
2046 eoc:
2047 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2048 closesocket(s->fd);
2049 return;
2050 }
2051 buf = buf1;
2052 while (size > 0) {
2053 /* reassemble a packet from the network */
2054 switch(s->state) {
2055 case 0:
2056 l = 4 - s->index;
2057 if (l > size)
2058 l = size;
2059 memcpy(s->buf + s->index, buf, l);
2060 buf += l;
2061 size -= l;
2062 s->index += l;
2063 if (s->index == 4) {
2064 /* got length */
2065 s->packet_len = ntohl(*(uint32_t *)s->buf);
2066 s->index = 0;
2067 s->state = 1;
2068 }
2069 break;
2070 case 1:
2071 l = s->packet_len - s->index;
2072 if (l > size)
2073 l = size;
abcd2baa
AL		 2074 if (s->index + l <= sizeof(s->buf)) {
2075 memcpy(s->buf + s->index, buf, l);
2076 } else {
2077 fprintf(stderr, "serious error: oversized packet received,"
2078 "connection terminated.\n");
2079 s->state = 0;
2080 goto eoc;
2081 }
2082
63a01ef8
AL		 2083 s->index += l;
2084 buf += l;
2085 size -= l;
2086 if (s->index >= s->packet_len) {
2087 qemu_send_packet(s->vc, s->buf, s->packet_len);
2088 s->index = 0;
2089 s->state = 0;
2090 }
2091 break;
2092 }
2093 }
2094}
2095
2096static void net_socket_send_dgram(void *opaque)
2097{
2098 NetSocketState *s = opaque;
2099 int size;
2100
c5b76b38 2101 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
63a01ef8
AL		 2102 if (size < 0)
2103 return;
2104 if (size == 0) {
2105 /* end of connection */
2106 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2107 return;
2108 }
2109 qemu_send_packet(s->vc, s->buf, size);
2110}
2111
2112static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
2113{
2114 struct ip_mreq imr;
2115 int fd;
2116 int val, ret;
2117 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
2118 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
2119 inet_ntoa(mcastaddr->sin_addr),
2120 (int)ntohl(mcastaddr->sin_addr.s_addr));
2121 return -1;
2122
2123 }
2124 fd = socket(PF_INET, SOCK_DGRAM, 0);
2125 if (fd < 0) {
2126 perror("socket(PF_INET, SOCK_DGRAM)");
2127 return -1;
2128 }
2129
2130 val = 1;
2131 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
2132 (const char *)&val, sizeof(val));
2133 if (ret < 0) {
2134 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
2135 goto fail;
2136 }
2137
2138 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
2139 if (ret < 0) {
2140 perror("bind");
2141 goto fail;
2142 }
2143
2144 /* Add host to multicast group */
2145 imr.imr_multiaddr = mcastaddr->sin_addr;
2146 imr.imr_interface.s_addr = htonl(INADDR_ANY);
2147
2148 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
2149 (const char *)&imr, sizeof(struct ip_mreq));
2150 if (ret < 0) {
2151 perror("setsockopt(IP_ADD_MEMBERSHIP)");
2152 goto fail;
2153 }
2154
2155 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
2156 val = 1;
2157 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
2158 (const char *)&val, sizeof(val));
2159 if (ret < 0) {
2160 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
2161 goto fail;
2162 }
2163
2164 socket_set_nonblock(fd);
2165 return fd;
2166fail:
2167 if (fd >= 0)
2168 closesocket(fd);
2169 return -1;
2170}
2171
b946a153
AL		 2172static void net_socket_cleanup(VLANClientState *vc)
2173{
2174 NetSocketState *s = vc->opaque;
2175 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2176 close(s->fd);
2177 qemu_free(s);
2178}
2179
7a9f6e4a
AL		 2180static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
2181 const char *model,
2182 const char *name,
bf38c1a0 2183 int fd, int is_connected)
63a01ef8
AL		 2184{
2185 struct sockaddr_in saddr;
2186 int newfd;
2187 socklen_t saddr_len;
2188 NetSocketState *s;
2189
2190 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
2191 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
2192 * by ONLY ONE process: we must "clone" this dgram socket --jjo
2193 */
2194
2195 if (is_connected) {
2196 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
2197 /* must be bound */
2198 if (saddr.sin_addr.s_addr==0) {
2199 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
2200 fd);
2201 return NULL;
2202 }
2203 /* clone dgram socket */
2204 newfd = net_socket_mcast_create(&saddr);
2205 if (newfd < 0) {
2206 /* error already reported by net_socket_mcast_create() */
2207 close(fd);
2208 return NULL;
2209 }
2210 /* clone newfd to fd, close newfd */
2211 dup2(newfd, fd);
2212 close(newfd);
2213
2214 } else {
2215 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2216 fd, strerror(errno));
2217 return NULL;
2218 }
2219 }
2220
2221 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8
AL		 2222 s->fd = fd;
2223
bb6e6364
MM		 2224 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET,
2225 vlan, NULL, model, name, NULL,
70783b9c 2226 net_socket_receive_dgram, NULL, NULL,
283c7c63 2227 net_socket_cleanup, s);
63a01ef8
AL		 2228 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2229
2230 /* mcast: save bound address as dst */
2231 if (is_connected) s->dgram_dst=saddr;
2232
2233 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2234 "socket: fd=%d (%s mcast=%s:%d)",
2235 fd, is_connected? "cloned" : "",
2236 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2237 return s;
2238}
2239
2240static void net_socket_connect(void *opaque)
2241{
2242 NetSocketState *s = opaque;
2243 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2244}
2245
7a9f6e4a
AL		 2246static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2247 const char *model,
2248 const char *name,
bf38c1a0 2249 int fd, int is_connected)
63a01ef8
AL		 2250{
2251 NetSocketState *s;
2252 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8 2253 s->fd = fd;
bb6e6364
MM		 2254 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET,
2255 vlan, NULL, model, name, NULL,
70783b9c 2256 net_socket_receive, NULL, NULL,
283c7c63 2257 net_socket_cleanup, s);
63a01ef8
AL		 2258 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2259 "socket: fd=%d", fd);
2260 if (is_connected) {
2261 net_socket_connect(s);
2262 } else {
2263 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2264 }
2265 return s;
2266}
2267
7a9f6e4a
AL		 2268static NetSocketState *net_socket_fd_init(VLANState *vlan,
2269 const char *model, const char *name,
bf38c1a0 2270 int fd, int is_connected)
63a01ef8 2271{
acedcfbf 2272 int so_type = -1, optlen=sizeof(so_type);
63a01ef8
AL		 2273
2274 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2275 (socklen_t *)&optlen)< 0) {
2276 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2277 return NULL;
2278 }
2279 switch(so_type) {
2280 case SOCK_DGRAM:
7a9f6e4a 2281 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
63a01ef8 2282 case SOCK_STREAM:
7a9f6e4a 2283 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2284 default:
2285 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2286 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
7a9f6e4a 2287 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2288 }
2289 return NULL;
2290}
2291
2292static void net_socket_accept(void *opaque)
2293{
2294 NetSocketListenState *s = opaque;
2295 NetSocketState *s1;
2296 struct sockaddr_in saddr;
2297 socklen_t len;
2298 int fd;
2299
2300 for(;;) {
2301 len = sizeof(saddr);
2302 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2303 if (fd < 0 && errno != EINTR) {
2304 return;
2305 } else if (fd >= 0) {
2306 break;
2307 }
2308 }
7a9f6e4a 2309 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
63a01ef8
AL		 2310 if (!s1) {
2311 closesocket(fd);
2312 } else {
2313 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2314 "socket: connection from %s:%d",
2315 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2316 }
2317}
2318
7a9f6e4a
AL		 2319static int net_socket_listen_init(VLANState *vlan,
2320 const char *model,
2321 const char *name,
bf38c1a0 2322 const char *host_str)
63a01ef8
AL		 2323{
2324 NetSocketListenState *s;
2325 int fd, val, ret;
2326 struct sockaddr_in saddr;
2327
2328 if (parse_host_port(&saddr, host_str) < 0)
2329 return -1;
2330
2331 s = qemu_mallocz(sizeof(NetSocketListenState));
63a01ef8
AL		 2332
2333 fd = socket(PF_INET, SOCK_STREAM, 0);
2334 if (fd < 0) {
2335 perror("socket");
2336 return -1;
2337 }
2338 socket_set_nonblock(fd);
2339
2340 /* allow fast reuse */
2341 val = 1;
2342 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2343
2344 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2345 if (ret < 0) {
2346 perror("bind");
2347 return -1;
2348 }
2349 ret = listen(fd, 0);
2350 if (ret < 0) {
2351 perror("listen");
2352 return -1;
2353 }
2354 s->vlan = vlan;
02374aa0
MM		 2355 s->model = qemu_strdup(model);
2356 s->name = name ? qemu_strdup(name) : NULL;
63a01ef8
AL		 2357 s->fd = fd;
2358 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2359 return 0;
2360}
2361
7a9f6e4a
AL		 2362static int net_socket_connect_init(VLANState *vlan,
2363 const char *model,
2364 const char *name,
bf38c1a0 2365 const char *host_str)
63a01ef8
AL		 2366{
2367 NetSocketState *s;
2368 int fd, connected, ret, err;
2369 struct sockaddr_in saddr;
2370
2371 if (parse_host_port(&saddr, host_str) < 0)
2372 return -1;
2373
2374 fd = socket(PF_INET, SOCK_STREAM, 0);
2375 if (fd < 0) {
2376 perror("socket");
2377 return -1;
2378 }
2379 socket_set_nonblock(fd);
2380
2381 connected = 0;
2382 for(;;) {
2383 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2384 if (ret < 0) {
2385 err = socket_error();
2386 if (err == EINTR || err == EWOULDBLOCK) {
2387 } else if (err == EINPROGRESS) {
2388 break;
2389#ifdef _WIN32
2390 } else if (err == WSAEALREADY) {
2391 break;
2392#endif
2393 } else {
2394 perror("connect");
2395 closesocket(fd);
2396 return -1;
2397 }
2398 } else {
2399 connected = 1;
2400 break;
2401 }
2402 }
7a9f6e4a 2403 s = net_socket_fd_init(vlan, model, name, fd, connected);
63a01ef8
AL		 2404 if (!s)
2405 return -1;
2406 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2407 "socket: connect to %s:%d",
2408 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2409 return 0;
2410}
2411
7a9f6e4a
AL		 2412static int net_socket_mcast_init(VLANState *vlan,
2413 const char *model,
2414 const char *name,
bf38c1a0 2415 const char *host_str)
63a01ef8
AL		 2416{
2417 NetSocketState *s;
2418 int fd;
2419 struct sockaddr_in saddr;
2420
2421 if (parse_host_port(&saddr, host_str) < 0)
2422 return -1;
2423
2424
2425 fd = net_socket_mcast_create(&saddr);
2426 if (fd < 0)
2427 return -1;
2428
7a9f6e4a 2429 s = net_socket_fd_init(vlan, model, name, fd, 0);
63a01ef8
AL		 2430 if (!s)
2431 return -1;
2432
2433 s->dgram_dst = saddr;
2434
2435 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2436 "socket: mcast=%s:%d",
2437 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2438 return 0;
2439
2440}
2441
bb9ea79e
AL		 2442typedef struct DumpState {
2443 VLANClientState *pcap_vc;
2444 int fd;
2445 int pcap_caplen;
2446} DumpState;
2447
2448#define PCAP_MAGIC 0xa1b2c3d4
2449
2450struct pcap_file_hdr {
2451 uint32_t magic;
2452 uint16_t version_major;
2453 uint16_t version_minor;
2454 int32_t thiszone;
2455 uint32_t sigfigs;
2456 uint32_t snaplen;
2457 uint32_t linktype;
2458};
2459
2460struct pcap_sf_pkthdr {
2461 struct {
2462 int32_t tv_sec;
2463 int32_t tv_usec;
2464 } ts;
2465 uint32_t caplen;
2466 uint32_t len;
2467};
2468
4f1c942b 2469static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
bb9ea79e 2470{
e3f5ec2b 2471 DumpState *s = vc->opaque;
bb9ea79e
AL		 2472 struct pcap_sf_pkthdr hdr;
2473 int64_t ts;
2474 int caplen;
2475
2476 /* Early return in case of previous error. */
2477 if (s->fd < 0) {
4f1c942b 2478 return size;
bb9ea79e
AL		 2479 }
2480
6ee093c9 2481 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
bb9ea79e
AL		 2482 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2483
37cb6fc3 2484 hdr.ts.tv_sec = ts / 1000000;
bb9ea79e
AL		 2485 hdr.ts.tv_usec = ts % 1000000;
2486 hdr.caplen = caplen;
2487 hdr.len = size;
2488 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2489 write(s->fd, buf, caplen) != caplen) {
2490 qemu_log("-net dump write error - stop dump\n");
2491 close(s->fd);
2492 s->fd = -1;
2493 }
4f1c942b
MM		 2494
2495 return size;
bb9ea79e
AL		 2496}
2497
2498static void net_dump_cleanup(VLANClientState *vc)
2499{
2500 DumpState *s = vc->opaque;
2501
2502 close(s->fd);
2503 qemu_free(s);
2504}
2505
fb12577c 2506static int net_dump_init(VLANState *vlan, const char *device,
bb9ea79e
AL		 2507 const char *name, const char *filename, int len)
2508{
2509 struct pcap_file_hdr hdr;
2510 DumpState *s;
2511
2512 s = qemu_malloc(sizeof(DumpState));
2513
024431b3 2514 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
bb9ea79e 2515 if (s->fd < 0) {
fb12577c 2516 qemu_error("-net dump: can't open %s\n", filename);
bb9ea79e
AL		 2517 return -1;
2518 }
2519
2520 s->pcap_caplen = len;
2521
2522 hdr.magic = PCAP_MAGIC;
2523 hdr.version_major = 2;
2524 hdr.version_minor = 4;
2525 hdr.thiszone = 0;
2526 hdr.sigfigs = 0;
2527 hdr.snaplen = s->pcap_caplen;
2528 hdr.linktype = 1;
2529
2530 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
fb12577c 2531 qemu_error("-net dump write error: %s\n", strerror(errno));
bb9ea79e
AL		 2532 close(s->fd);
2533 qemu_free(s);
2534 return -1;
2535 }
2536
bb6e6364
MM		 2537 s->pcap_vc = qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP,
2538 vlan, NULL, device, name, NULL,
70783b9c 2539 dump_receive, NULL, NULL,
bb9ea79e
AL		 2540 net_dump_cleanup, s);
2541 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2542 "dump to %s (len=%d)", filename, len);
2543 return 0;
2544}
2545
63a01ef8 2546/* find or alloc a new VLAN */
1a609520 2547VLANState *qemu_find_vlan(int id, int allocate)
63a01ef8 2548{
5610c3aa
MM		 2549 VLANState *vlan;
2550
2551 QTAILQ_FOREACH(vlan, &vlans, next) {
2552 if (vlan->id == id) {
63a01ef8 2553 return vlan;
5610c3aa 2554 }
63a01ef8 2555 }
5610c3aa 2556
1a609520
JK		 2557 if (!allocate) {
2558 return NULL;
2559 }
5610c3aa 2560
63a01ef8 2561 vlan = qemu_mallocz(sizeof(VLANState));
63a01ef8 2562 vlan->id = id;
5610c3aa 2563 QTAILQ_INIT(&vlan->clients);
f7105843
MM		 2564
2565 vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
2566 qemu_vlan_deliver_packet_iov,
2567 vlan);
5610c3aa
MM		 2568
2569 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
2570
63a01ef8
AL		 2571 return vlan;
2572}
2573
2ef924b4 2574VLANClientState *qemu_find_netdev(const char *id)
5869c4d5
MM		 2575{
2576 VLANClientState *vc;
2577
2578 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
2579 if (!strcmp(vc->name, id)) {
2580 return vc;
2581 }
2582 }
2583
2584 return NULL;
2585}
2586
7697079b
AL		 2587static int nic_get_free_idx(void)
2588{
2589 int index;
2590
2591 for (index = 0; index < MAX_NICS; index++)
2592 if (!nd_table[index].used)
2593 return index;
2594 return -1;
2595}
2596
07caea31
MA		 2597int qemu_show_nic_models(const char *arg, const char *const *models)
2598{
2599 int i;
2600
2601 if (!arg || strcmp(arg, "?"))
2602 return 0;
2603
2604 fprintf(stderr, "qemu: Supported NIC models: ");
2605 for (i = 0 ; models[i]; i++)
2606 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2607 return 1;
2608}
2609
d07f22c5
AL		 2610void qemu_check_nic_model(NICInfo *nd, const char *model)
2611{
2612 const char *models[2];
2613
2614 models[0] = model;
2615 models[1] = NULL;
2616
07caea31
MA		 2617 if (qemu_show_nic_models(nd->model, models))
2618 exit(0);
2619 if (qemu_find_nic_model(nd, models, model) < 0)
2620 exit(1);
d07f22c5
AL		 2621}
2622
07caea31
MA		 2623int qemu_find_nic_model(NICInfo *nd, const char * const *models,
2624 const char *default_model)
d07f22c5 2625{
07caea31 2626 int i;
d07f22c5
AL		 2627
2628 if (!nd->model)
32a8e14a 2629 nd->model = qemu_strdup(default_model);
d07f22c5 2630
07caea31
MA		 2631 for (i = 0 ; models[i]; i++) {
2632 if (strcmp(nd->model, models[i]) == 0)
2633 return i;
d07f22c5
AL		 2634 }
2635
07caea31
MA		 2636 qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
2637 return -1;
d07f22c5
AL		 2638}
2639
c1d6eed7
MM		 2640static int net_handle_fd_param(Monitor *mon, const char *param)
2641{
2642 if (!qemu_isdigit(param[0])) {
2643 int fd;
2644
2645 fd = monitor_get_fd(mon, param);
2646 if (fd == -1) {
fb12577c 2647 qemu_error("No file descriptor named %s found", param);
c1d6eed7
MM		 2648 return -1;
2649 }
2650
2651 return fd;
2652 } else {
2653 return strtol(param, NULL, 0);
2654 }
2655}
2656
f6b134ac
MM		 2657static int net_init_nic(QemuOpts *opts,
2658 Monitor *mon,
2659 const char *name,
2660 VLANState *vlan)
f83c6e10
MM		 2661{
2662 int idx;
2663 NICInfo *nd;
5869c4d5 2664 const char *netdev;
f83c6e10
MM		 2665
2666 idx = nic_get_free_idx();
2667 if (idx == -1 || nb_nics >= MAX_NICS) {
2668 qemu_error("Too Many NICs\n");
2669 return -1;
2670 }
2671
2672 nd = &nd_table[idx];
2673
2674 memset(nd, 0, sizeof(*nd));
2675
5869c4d5
MM		 2676 if ((netdev = qemu_opt_get(opts, "netdev"))) {
2677 nd->netdev = qemu_find_netdev(netdev);
2678 if (!nd->netdev) {
2679 qemu_error("netdev '%s' not found\n", netdev);
2680 return -1;
2681 }
2682 } else {
2683 assert(vlan);
2684 nd->vlan = vlan;
2685 }
6d952ebe
MM		 2686 if (name) {
2687 nd->name = qemu_strdup(name);
2688 }
f83c6e10
MM		 2689 if (qemu_opt_get(opts, "model")) {
2690 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
2691 }
2692 if (qemu_opt_get(opts, "addr")) {
2693 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
2694 }
2695
2696 nd->macaddr[0] = 0x52;
2697 nd->macaddr[1] = 0x54;
2698 nd->macaddr[2] = 0x00;
2699 nd->macaddr[3] = 0x12;
2700 nd->macaddr[4] = 0x34;
2701 nd->macaddr[5] = 0x56 + idx;
2702
2703 if (qemu_opt_get(opts, "macaddr") &&
2704 parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
2705 qemu_error("invalid syntax for ethernet address\n");
2706 return -1;
2707 }
2708
2709 nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
2710 if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
2711 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
2712 qemu_error("invalid # of vectors: %d\n", nd->nvectors);
2713 return -1;
2714 }
2715
2716 nd->used = 1;
5869c4d5
MM		 2717 if (vlan) {
2718 nd->vlan->nb_guest_devs++;
2719 }
f83c6e10
MM		 2720 nb_nics++;
2721
2722 return idx;
2723}
2724
a3a766e7 2725#if defined(CONFIG_SLIRP)
ec302ffd
MM		 2726static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
2727{
2728 struct slirp_config_str *config;
2729
2730 if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
2731 return 0;
2732 }
2733
2734 config = qemu_mallocz(sizeof(*config));
2735
2736 pstrcpy(config->str, sizeof(config->str), value);
2737
2738 if (!strcmp(name, "hostfwd")) {
2739 config->flags = SLIRP_CFG_HOSTFWD;
2740 }
2741
2742 config->next = slirp_configs;
2743 slirp_configs = config;
2744
2745 return 0;
2746}
2747
f6b134ac
MM		 2748static int net_init_slirp(QemuOpts *opts,
2749 Monitor *mon,
2750 const char *name,
2751 VLANState *vlan)
ec302ffd 2752{
ec302ffd 2753 struct slirp_config_str *config;
ec302ffd
MM		 2754 const char *vhost;
2755 const char *vhostname;
2756 const char *vdhcp_start;
2757 const char *vnamesrv;
2758 const char *tftp_export;
2759 const char *bootfile;
2760 const char *smb_export;
2761 const char *vsmbsrv;
2762 char *vnet = NULL;
2763 int restricted = 0;
2764 int ret;
2765
ec302ffd
MM		 2766 vhost = qemu_opt_get(opts, "host");
2767 vhostname = qemu_opt_get(opts, "hostname");
2768 vdhcp_start = qemu_opt_get(opts, "dhcpstart");
2769 vnamesrv = qemu_opt_get(opts, "dns");
2770 tftp_export = qemu_opt_get(opts, "tftp");
2771 bootfile = qemu_opt_get(opts, "bootfile");
2772 smb_export = qemu_opt_get(opts, "smb");
2773 vsmbsrv = qemu_opt_get(opts, "smbserver");
2774
2775 if (qemu_opt_get(opts, "ip")) {
2776 const char *ip = qemu_opt_get(opts, "ip");
2777 int l = strlen(ip) + strlen("/24") + 1;
2778
2779 vnet = qemu_malloc(l);
2780
2781 /* emulate legacy ip= parameter */
2782 pstrcpy(vnet, l, ip);
2783 pstrcat(vnet, l, "/24");
2784 }
2785
2786 if (qemu_opt_get(opts, "net")) {
2787 if (vnet) {
2788 qemu_free(vnet);
2789 }
2790 vnet = qemu_strdup(qemu_opt_get(opts, "net"));
2791 }
2792
2793 if (qemu_opt_get(opts, "restrict") &&
2794 qemu_opt_get(opts, "restrict")[0] == 'y') {
2795 restricted = 1;
2796 }
2797
2798 qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
2799
2800 ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
2801 vhostname, tftp_export, bootfile, vdhcp_start,
2802 vnamesrv, smb_export, vsmbsrv);
2803
2804 while (slirp_configs) {
2805 config = slirp_configs;
2806 slirp_configs = config->next;
2807 qemu_free(config);
2808 }
2809
f6b134ac 2810 if (ret != -1 && vlan) {
ec302ffd
MM		 2811 vlan->nb_host_devs++;
2812 }
2813
2814 qemu_free(vnet);
2815
2816 return ret;
2817}
a3a766e7 2818#endif /* CONFIG_SLIRP */
ec302ffd 2819
8a1c5235 2820#ifdef _WIN32
f6b134ac
MM		 2821static int net_init_tap_win32(QemuOpts *opts,
2822 Monitor *mon,
2823 const char *name,
2824 VLANState *vlan)
8a1c5235 2825{
8a1c5235
MM		 2826 const char *ifname;
2827
8a1c5235
MM		 2828 ifname = qemu_opt_get(opts, "ifname");
2829
2830 if (!ifname) {
2831 qemu_error("tap: no interface name\n");
2832 return -1;
2833 }
2834
2835 if (tap_win32_init(vlan, "tap", name, ifname) == -1) {
2836 return -1;
2837 }
2838
f6b134ac
MM		 2839 if (vlan) {
2840 vlan->nb_host_devs++;
2841 }
8a1c5235
MM		 2842
2843 return 0;
2844}
2845#elif !defined(_AIX)
f6b134ac
MM		 2846static int net_init_tap(QemuOpts *opts,
2847 Monitor *mon,
2848 const char *name,
2849 VLANState *vlan)
8a1c5235 2850{
8a1c5235 2851 TAPState *s;
424a7f96 2852 int fd, vnet_hdr;
8a1c5235 2853
8a1c5235 2854 if (qemu_opt_get(opts, "fd")) {
8a1c5235
MM		 2855 if (qemu_opt_get(opts, "ifname") ||
2856 qemu_opt_get(opts, "script") ||
baf74c95
MM		 2857 qemu_opt_get(opts, "downscript") ||
2858 qemu_opt_get(opts, "vnet_hdr")) {
2859 qemu_error("ifname=, script=, downscript= and vnet_hdr= is invalid with fd=\n");
8a1c5235
MM		 2860 return -1;
2861 }
2862
2863 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2864 if (fd == -1) {
2865 return -1;
2866 }
2867
2868 fcntl(fd, F_SETFL, O_NONBLOCK);
2869
424a7f96 2870 vnet_hdr = tap_probe_vnet_hdr(fd);
8a1c5235 2871 } else {
424a7f96
MM		 2872 if (!qemu_opt_get(opts, "script")) {
2873 qemu_opt_set(opts, "script", DEFAULT_NETWORK_SCRIPT);
8a1c5235 2874 }
424a7f96
MM		 2875
2876 if (!qemu_opt_get(opts, "downscript")) {
2877 qemu_opt_set(opts, "downscript", DEFAULT_NETWORK_DOWN_SCRIPT);
8a1c5235
MM		 2878 }
2879
424a7f96 2880 fd = net_tap_init(opts, &vnet_hdr);
8a1c5235
MM		 2881 }
2882
424a7f96 2883 s = net_tap_fd_init(vlan, "tap", name, fd, vnet_hdr);
8a1c5235 2884 if (!s) {
424a7f96 2885 close(fd);
8a1c5235
MM		 2886 return -1;
2887 }
2888
2889 if (tap_set_sndbuf(s, opts) < 0) {
2890 return -1;
2891 }
2892
424a7f96
MM		 2893 if (qemu_opt_get(opts, "fd")) {
2894 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
2895 } else {
2896 const char *ifname, *script, *downscript;
2897
2898 ifname = qemu_opt_get(opts, "ifname");
2899 script = qemu_opt_get(opts, "script");
2900 downscript = qemu_opt_get(opts, "downscript");
2901
2902 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2903 "ifname=%s,script=%s,downscript=%s",
2904 ifname, script, downscript);
2905
2906 if (strcmp(downscript, "no") != 0) {
2907 snprintf(s->down_script, sizeof(s->down_script), "%s", downscript);
2908 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
2909 }
2910 }
2911
f6b134ac
MM		 2912 if (vlan) {
2913 vlan->nb_host_devs++;
2914 }
8a1c5235
MM		 2915
2916 return 0;
2917}
2918#endif
2919
f6b134ac
MM		 2920static int net_init_socket(QemuOpts *opts,
2921 Monitor *mon,
2922 const char *name,
2923 VLANState *vlan)
88ce16ca 2924{
88ce16ca
MM		 2925 if (qemu_opt_get(opts, "fd")) {
2926 int fd;
2927
2928 if (qemu_opt_get(opts, "listen") ||
2929 qemu_opt_get(opts, "connect") ||
2930 qemu_opt_get(opts, "mcast")) {
2931 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2932 return -1;
2933 }
2934
2935 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2936 if (fd == -1) {
2937 return -1;
2938 }
2939
2940 if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) {
2941 close(fd);
2942 return -1;
2943 }
2944 } else if (qemu_opt_get(opts, "listen")) {
2945 const char *listen;
2946
2947 if (qemu_opt_get(opts, "fd") ||
2948 qemu_opt_get(opts, "connect") ||
2949 qemu_opt_get(opts, "mcast")) {
2950 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2951 return -1;
2952 }
2953
2954 listen = qemu_opt_get(opts, "listen");
2955
2956 if (net_socket_listen_init(vlan, "socket", name, listen) == -1) {
2957 return -1;
2958 }
2959 } else if (qemu_opt_get(opts, "connect")) {
2960 const char *connect;
2961
2962 if (qemu_opt_get(opts, "fd") ||
2963 qemu_opt_get(opts, "listen") ||
2964 qemu_opt_get(opts, "mcast")) {
2965 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2966 return -1;
2967 }
2968
2969 connect = qemu_opt_get(opts, "connect");
2970
2971 if (net_socket_connect_init(vlan, "socket", name, connect) == -1) {
2972 return -1;
2973 }
2974 } else if (qemu_opt_get(opts, "mcast")) {
2975 const char *mcast;
2976
2977 if (qemu_opt_get(opts, "fd") ||
2978 qemu_opt_get(opts, "connect") ||
2979 qemu_opt_get(opts, "listen")) {
2980 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
2981 return -1;
2982 }
2983
2984 mcast = qemu_opt_get(opts, "mcast");
2985
2986 if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) {
2987 return -1;
2988 }
2989 } else {
2990 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
2991 return -1;
2992 }
2993
f6b134ac
MM		 2994 if (vlan) {
2995 vlan->nb_host_devs++;
2996 }
88ce16ca
MM		 2997
2998 return 0;
2999}
3000
dd51058d 3001#ifdef CONFIG_VDE
f6b134ac
MM		 3002static int net_init_vde(QemuOpts *opts,
3003 Monitor *mon,
3004 const char *name,
3005 VLANState *vlan)
dd51058d 3006{
dd51058d
MM		 3007 const char *sock;
3008 const char *group;
3009 int port, mode;
3010
dd51058d
MM		 3011 sock = qemu_opt_get(opts, "sock");
3012 group = qemu_opt_get(opts, "group");
3013
3014 port = qemu_opt_get_number(opts, "port", 0);
3015 mode = qemu_opt_get_number(opts, "mode", 0700);
3016
3017 if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) {
3018 return -1;
3019 }
3020
f6b134ac
MM		 3021 if (vlan) {
3022 vlan->nb_host_devs++;
3023 }
dd51058d
MM		 3024
3025 return 0;
3026}
3027#endif
3028
f6b134ac
MM		 3029static int net_init_dump(QemuOpts *opts,
3030 Monitor *mon,
3031 const char *name,
3032 VLANState *vlan)
ed2955c2 3033{
ed2955c2
MM		 3034 int len;
3035 const char *file;
ed2955c2
MM		 3036 char def_file[128];
3037
f6b134ac 3038 assert(vlan);
ed2955c2 3039
ed2955c2
MM		 3040 file = qemu_opt_get(opts, "file");
3041 if (!file) {
3042 snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id);
3043 file = def_file;
3044 }
3045
3046 len = qemu_opt_get_size(opts, "len", 65536);
3047
3048 return net_dump_init(vlan, "dump", name, file, len);
3049}
3050
f83c6e10
MM		 3051#define NET_COMMON_PARAMS_DESC \
3052 { \
3053 .name = "type", \
3054 .type = QEMU_OPT_STRING, \
3055 .help = "net client type (nic, tap etc.)", \
3056 }, { \
3057 .name = "vlan", \
3058 .type = QEMU_OPT_NUMBER, \
3059 .help = "vlan number", \
3060 }, { \
3061 .name = "name", \
3062 .type = QEMU_OPT_STRING, \
3063 .help = "identifier for monitor commands", \
3064 }
3065
6d952ebe
MM		 3066typedef int (*net_client_init_func)(QemuOpts *opts,
3067 Monitor *mon,
f6b134ac
MM		 3068 const char *name,
3069 VLANState *vlan);
f83c6e10
MM		 3070
3071/* magic number, but compiler will warn if too small */
3072#define NET_MAX_DESC 20
3073
3074static struct {
3075 const char *type;
3076 net_client_init_func init;
3077 QemuOptDesc desc[NET_MAX_DESC];
3078} net_client_types[] = {
3079 {
3080 .type = "none",
3081 .desc = {
3082 NET_COMMON_PARAMS_DESC,
3083 { /* end of list */ }
3084 },
3085 }, {
3086 .type = "nic",
3087 .init = net_init_nic,
3088 .desc = {
3089 NET_COMMON_PARAMS_DESC,
5869c4d5
MM		 3090 {
3091 .name = "netdev",
3092 .type = QEMU_OPT_STRING,
3093 .help = "id of -netdev to connect to",
3094 },
f83c6e10
MM		 3095 {
3096 .name = "macaddr",
3097 .type = QEMU_OPT_STRING,
3098 .help = "MAC address",
3099 }, {
3100 .name = "model",
3101 .type = QEMU_OPT_STRING,
3102 .help = "device model (e1000, rtl8139, virtio etc.)",
3103 }, {
3104 .name = "addr",
3105 .type = QEMU_OPT_STRING,
3106 .help = "PCI device address",
3107 }, {
3108 .name = "vectors",
3109 .type = QEMU_OPT_NUMBER,
3110 .help = "number of MSI-x vectors, 0 to disable MSI-X",
3111 },
3112 { /* end of list */ }
3113 },
ec302ffd
MM		 3114#ifdef CONFIG_SLIRP
3115 }, {
3116 .type = "user",
3117 .init = net_init_slirp,
3118 .desc = {
3119 NET_COMMON_PARAMS_DESC,
3120 {
3121 .name = "hostname",
3122 .type = QEMU_OPT_STRING,
3123 .help = "client hostname reported by the builtin DHCP server",
3124 }, {
3125 .name = "restrict",
3126 .type = QEMU_OPT_STRING,
3127 .help = "isolate the guest from the host (y|yes|n|no)",
3128 }, {
3129 .name = "ip",
3130 .type = QEMU_OPT_STRING,
3131 .help = "legacy parameter, use net= instead",
3132 }, {
3133 .name = "net",
3134 .type = QEMU_OPT_STRING,
3135 .help = "IP address and optional netmask",
3136 }, {
3137 .name = "host",
3138 .type = QEMU_OPT_STRING,
3139 .help = "guest-visible address of the host",
3140 }, {
3141 .name = "tftp",
3142 .type = QEMU_OPT_STRING,
3143 .help = "root directory of the built-in TFTP server",
3144 }, {
3145 .name = "bootfile",
3146 .type = QEMU_OPT_STRING,
3147 .help = "BOOTP filename, for use with tftp=",
3148 }, {
3149 .name = "dhcpstart",
3150 .type = QEMU_OPT_STRING,
3151 .help = "the first of the 16 IPs the built-in DHCP server can assign",
3152 }, {
3153 .name = "dns",
3154 .type = QEMU_OPT_STRING,
3155 .help = "guest-visible address of the virtual nameserver",
3156 }, {
3157 .name = "smb",
3158 .type = QEMU_OPT_STRING,
3159 .help = "root directory of the built-in SMB server",
3160 }, {
3161 .name = "smbserver",
3162 .type = QEMU_OPT_STRING,
3163 .help = "IP address of the built-in SMB server",
3164 }, {
3165 .name = "hostfwd",
3166 .type = QEMU_OPT_STRING,
3167 .help = "guest port number to forward incoming TCP or UDP connections",
3168 }, {
3169 .name = "guestfwd",
3170 .type = QEMU_OPT_STRING,
3171 .help = "IP address and port to forward guest TCP connections",
3172 },
3173 { /* end of list */ }
3174 },
8a1c5235
MM		 3175#endif
3176#ifdef _WIN32
3177 }, {
3178 .type = "tap",
3179 .init = net_init_tap_win32,
3180 .desc = {
3181 NET_COMMON_PARAMS_DESC,
3182 {
3183 .name = "ifname",
3184 .type = QEMU_OPT_STRING,
3185 .help = "interface name",
3186 },
3187 { /* end of list */ }
3188 },
3189#elif !defined(_AIX)
3190 }, {
3191 .type = "tap",
3192 .init = net_init_tap,
3193 .desc = {
3194 NET_COMMON_PARAMS_DESC,
3195 {
3196 .name = "fd",
3197 .type = QEMU_OPT_STRING,
3198 .help = "file descriptor of an already opened tap",
3199 }, {
3200 .name = "ifname",
3201 .type = QEMU_OPT_STRING,
3202 .help = "interface name",
3203 }, {
3204 .name = "script",
3205 .type = QEMU_OPT_STRING,
3206 .help = "script to initialize the interface",
3207 }, {
3208 .name = "downscript",
3209 .type = QEMU_OPT_STRING,
3210 .help = "script to shut down the interface",
8a1c5235
MM		 3211 }, {
3212 .name = "sndbuf",
3213 .type = QEMU_OPT_SIZE,
3214 .help = "send buffer limit"
baf74c95
MM		 3215 }, {
3216 .name = "vnet_hdr",
3217 .type = QEMU_OPT_BOOL,
3218 .help = "enable the IFF_VNET_HDR flag on the tap interface"
8a1c5235
MM		 3219 },
3220 { /* end of list */ }
3221 },
ec302ffd 3222#endif
88ce16ca
MM		 3223 }, {
3224 .type = "socket",
3225 .init = net_init_socket,
3226 .desc = {
3227 NET_COMMON_PARAMS_DESC,
3228 {
3229 .name = "fd",
3230 .type = QEMU_OPT_STRING,
3231 .help = "file descriptor of an already opened socket",
3232 }, {
3233 .name = "listen",
3234 .type = QEMU_OPT_STRING,
3235 .help = "port number, and optional hostname, to listen on",
3236 }, {
3237 .name = "connect",
3238 .type = QEMU_OPT_STRING,
3239 .help = "port number, and optional hostname, to connect to",
3240 }, {
3241 .name = "mcast",
3242 .type = QEMU_OPT_STRING,
3243 .help = "UDP multicast address and port number",
3244 },
3245 { /* end of list */ }
3246 },
dd51058d
MM		 3247#ifdef CONFIG_VDE
3248 }, {
3249 .type = "vde",
3250 .init = net_init_vde,
3251 .desc = {
3252 NET_COMMON_PARAMS_DESC,
3253 {
3254 .name = "sock",
3255 .type = QEMU_OPT_STRING,
3256 .help = "socket path",
3257 }, {
3258 .name = "port",
3259 .type = QEMU_OPT_NUMBER,
3260 .help = "port number",
3261 }, {
3262 .name = "group",
3263 .type = QEMU_OPT_STRING,
3264 .help = "group owner of socket",
3265 }, {
3266 .name = "mode",
3267 .type = QEMU_OPT_NUMBER,
3268 .help = "permissions for socket",
3269 },
3270 { /* end of list */ }
3271 },
3272#endif
ed2955c2
MM		 3273 }, {
3274 .type = "dump",
3275 .init = net_init_dump,
3276 .desc = {
3277 NET_COMMON_PARAMS_DESC,
3278 {
3279 .name = "len",
3280 .type = QEMU_OPT_SIZE,
3281 .help = "per-packet size limit (64k default)",
3282 }, {
3283 .name = "file",
3284 .type = QEMU_OPT_STRING,
3285 .help = "dump file path (default is qemu-vlan0.pcap)",
3286 },
3287 { /* end of list */ }
3288 },
f83c6e10
MM		 3289 },
3290 { /* end of list */ }
3291};
3292
f6b134ac 3293int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
f83c6e10 3294{
6d952ebe 3295 const char *name;
f83c6e10
MM		 3296 const char *type;
3297 int i;
3298
3299 type = qemu_opt_get(opts, "type");
3300 if (!type) {
3301 qemu_error("No type specified for -net\n");
3302 return -1;
3303 }
3304
f6b134ac
MM		 3305 if (is_netdev) {
3306 if (strcmp(type, "tap") != 0 &&
3307#ifdef CONFIG_SLIRP
3308 strcmp(type, "user") != 0 &&
3309#endif
3310#ifdef CONFIG_VDE
3311 strcmp(type, "vde") != 0 &&
3312#endif
3313 strcmp(type, "socket") != 0) {
3314 qemu_error("The '%s' network backend type is not valid with -netdev\n",
3315 type);
3316 return -1;
3317 }
3318
3319 if (qemu_opt_get(opts, "vlan")) {
3320 qemu_error("The 'vlan' parameter is not valid with -netdev\n");
3321 return -1;
3322 }
3323 if (qemu_opt_get(opts, "name")) {
3324 qemu_error("The 'name' parameter is not valid with -netdev\n");
3325 return -1;
3326 }
3327 if (!qemu_opts_id(opts)) {
3328 qemu_error("The id= parameter is required with -netdev\n");
3329 return -1;
3330 }
3331 }
3332
6d952ebe
MM		 3333 name = qemu_opts_id(opts);
3334 if (!name) {
3335 name = qemu_opt_get(opts, "name");
3336 }
3337
f83c6e10
MM		 3338 for (i = 0; net_client_types[i].type != NULL; i++) {
3339 if (!strcmp(net_client_types[i].type, type)) {
f6b134ac
MM		 3340 VLANState *vlan = NULL;
3341
f83c6e10
MM		 3342 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
3343 return -1;
3344 }
3345
5869c4d5
MM		 3346 /* Do not add to a vlan if it's a -netdev or a nic with a
3347 * netdev= parameter. */
3348 if (!(is_netdev ||
3349 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
f6b134ac
MM		 3350 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
3351 }
3352
f83c6e10 3353 if (net_client_types[i].init) {
f6b134ac 3354 return net_client_types[i].init(opts, mon, name, vlan);
f83c6e10
MM		 3355 } else {
3356 return 0;
3357 }
3358 }
3359 }
3360
3361 qemu_error("Invalid -net type '%s'\n", type);
3362 return -1;
3363}
3364
8b13c4a7
AL		 3365void net_client_uninit(NICInfo *nd)
3366{
d80b9fc6
MM		 3367 if (nd->vlan) {
3368 nd->vlan->nb_guest_devs--;
3369 }
8b13c4a7 3370 nb_nics--;
a9796703 3371
9203f520
MM		 3372 qemu_free(nd->model);
3373 qemu_free(nd->name);
3374 qemu_free(nd->devaddr);
a9796703 3375
d2cffe30 3376 nd->used = 0;
8b13c4a7
AL		 3377}
3378
6f338c34
AL		 3379static int net_host_check_device(const char *device)
3380{
3381 int i;
bb9ea79e 3382 const char *valid_param_list[] = { "tap", "socket", "dump"
6f338c34
AL		 3383#ifdef CONFIG_SLIRP
3384 ,"user"
3385#endif
3386#ifdef CONFIG_VDE
3387 ,"vde"
3388#endif
3389 };
3390 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
3391 if (!strncmp(valid_param_list[i], device,
3392 strlen(valid_param_list[i])))
3393 return 1;
3394 }
3395
3396 return 0;
3397}
3398
f18c16de 3399void net_host_device_add(Monitor *mon, const QDict *qdict)
6f338c34 3400{
f18c16de 3401 const char *device = qdict_get_str(qdict, "device");
7f1c9d20
MM		 3402 const char *opts_str = qdict_get_try_str(qdict, "opts");
3403 QemuOpts *opts;
f18c16de 3404
6f338c34 3405 if (!net_host_check_device(device)) {
376253ec 3406 monitor_printf(mon, "invalid host network device %s\n", device);
6f338c34
AL		 3407 return;
3408 }
7f1c9d20
MM		 3409
3410 opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
3411 if (!opts) {
3412 monitor_printf(mon, "parsing network options '%s' failed\n",
3413 opts_str ? opts_str : "");
3414 return;
3415 }
3416
3417 qemu_opt_set(opts, "type", device);
3418
f6b134ac 3419 if (net_client_init(mon, opts, 0) < 0) {
5c8be678
AL		 3420 monitor_printf(mon, "adding host network device %s failed\n", device);
3421 }
6f338c34
AL		 3422}
3423
f18c16de 3424void net_host_device_remove(Monitor *mon, const QDict *qdict)
6f338c34 3425{
6f338c34 3426 VLANClientState *vc;
f18c16de
LC		 3427 int vlan_id = qdict_get_int(qdict, "vlan_id");
3428 const char *device = qdict_get_str(qdict, "device");
6f338c34 3429
1a609520 3430 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
6f338c34 3431 if (!vc) {
6f338c34
AL		 3432 return;
3433 }
e8f1f9db
AL		 3434 if (!net_host_check_device(vc->model)) {
3435 monitor_printf(mon, "invalid host network device %s\n", device);
3436 return;
3437 }
6f338c34
AL		 3438 qemu_del_vlan_client(vc);
3439}
3440
406c8df3
GC		 3441void net_set_boot_mask(int net_boot_mask)
3442{
3443 int i;
3444
3445 /* Only the first four NICs may be bootable */
3446 net_boot_mask = net_boot_mask & 0xF;
3447
3448 for (i = 0; i < nb_nics; i++) {
3449 if (net_boot_mask & (1 << i)) {
3450 nd_table[i].bootable = 1;
3451 net_boot_mask &= ~(1 << i);
3452 }
3453 }
3454
3455 if (net_boot_mask) {
3456 fprintf(stderr, "Cannot boot from non-existent NIC\n");
3457 exit(1);
3458 }
3459}
3460
376253ec 3461void do_info_network(Monitor *mon)
63a01ef8
AL		 3462{
3463 VLANState *vlan;
63a01ef8 3464
5610c3aa
MM		 3465 QTAILQ_FOREACH(vlan, &vlans, next) {
3466 VLANClientState *vc;
3467
376253ec 3468 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
5610c3aa
MM		 3469
3470 QTAILQ_FOREACH(vc, &vlan->clients, next) {
376253ec 3471 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
5610c3aa 3472 }
63a01ef8
AL		 3473 }
3474}
3475
f18c16de 3476void do_set_link(Monitor *mon, const QDict *qdict)
436e5e53
AL		 3477{
3478 VLANState *vlan;
3479 VLANClientState *vc = NULL;
f18c16de
LC		 3480 const char *name = qdict_get_str(qdict, "name");
3481 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
436e5e53 3482
5610c3aa
MM		 3483 QTAILQ_FOREACH(vlan, &vlans, next) {
3484 QTAILQ_FOREACH(vc, &vlan->clients, next) {
3485 if (strcmp(vc->name, name) == 0) {
dd5de373 3486 goto done;
5610c3aa
MM		 3487 }
3488 }
3489 }
dd5de373 3490done:
436e5e53
AL		 3491
3492 if (!vc) {
7dc3fa09 3493 monitor_printf(mon, "could not find network device '%s'\n", name);
c3cf0d3f 3494 return;
436e5e53
AL		 3495 }
3496
3497 if (strcmp(up_or_down, "up") == 0)
3498 vc->link_down = 0;
3499 else if (strcmp(up_or_down, "down") == 0)
3500 vc->link_down = 1;
3501 else
376253ec
AL		 3502 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
3503 "valid\n", up_or_down);
436e5e53 3504
34b25ca7
AL		 3505 if (vc->link_status_changed)
3506 vc->link_status_changed(vc);
436e5e53
AL		 3507}
3508
63a01ef8
AL		 3509void net_cleanup(void)
3510{
3511 VLANState *vlan;
577c4af9 3512 VLANClientState *vc, *next_vc;
63a01ef8 3513
5610c3aa 3514 QTAILQ_FOREACH(vlan, &vlans, next) {
5610c3aa 3515 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
b946a153 3516 qemu_del_vlan_client(vc);
63a01ef8
AL		 3517 }
3518 }
577c4af9
MM		 3519
3520 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
3521 qemu_del_vlan_client(vc);
3522 }
63a01ef8
AL		 3523}
3524
dc1c9fe8 3525static void net_check_clients(void)
63a01ef8
AL		 3526{
3527 VLANState *vlan;
3528
5610c3aa 3529 QTAILQ_FOREACH(vlan, &vlans, next) {
63a01ef8
AL		 3530 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
3531 continue;
3532 if (vlan->nb_guest_devs == 0)
3533 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
3534 if (vlan->nb_host_devs == 0)
3535 fprintf(stderr,
3536 "Warning: vlan %d is not connected to host network\n",
3537 vlan->id);
3538 }
3539}
dc1c9fe8
MM		 3540
3541static int net_init_client(QemuOpts *opts, void *dummy)
3542{
c1671a08
MM		 3543 if (net_client_init(NULL, opts, 0) < 0)
3544 return -1;
3545 return 0;
f6b134ac
MM		 3546}
3547
3548static int net_init_netdev(QemuOpts *opts, void *dummy)
3549{
3550 return net_client_init(NULL, opts, 1);
dc1c9fe8
MM		 3551}
3552
3553int net_init_clients(void)
3554{
3555 if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
3556 /* if no clients, we use a default config */
3557 qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
3558#ifdef CONFIG_SLIRP
3559 qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
3560#endif
3561 }
3562
5610c3aa 3563 QTAILQ_INIT(&vlans);
577c4af9 3564 QTAILQ_INIT(&non_vlan_clients);
5610c3aa 3565
f6b134ac
MM		 3566 if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1)
3567 return -1;
3568
dc1c9fe8
MM		 3569 if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
3570 return -1;
3571 }
3572
3573 net_check_clients();
3574
3575 return 0;
3576}
3577
7f161aae 3578int net_client_parse(QemuOptsList *opts_list, const char *optarg)
dc1c9fe8 3579{
a3a766e7 3580#if defined(CONFIG_SLIRP)
dc1c9fe8 3581 /* handle legacy -net channel,port:chr */
7f161aae
MM		 3582 if (!strcmp(opts_list->name, "net") &&
3583 !strncmp(optarg, "channel,", strlen("channel,"))) {
dc1c9fe8
MM		 3584 int ret;
3585
3586 optarg += strlen("channel,");
3587
3588 if (QTAILQ_EMPTY(&slirp_stacks)) {
3589 struct slirp_config_str *config;
3590
3591 config = qemu_malloc(sizeof(*config));
3592 pstrcpy(config->str, sizeof(config->str), optarg);
3593 config->flags = SLIRP_CFG_LEGACY;
3594 config->next = slirp_configs;
3595 slirp_configs = config;
3596 ret = 0;
3597 } else {
3598 ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
3599 }
3600
3601 return ret;
3602 }
a3a766e7 3603#endif
7f161aae 3604 if (!qemu_opts_parse(opts_list, optarg, "type")) {
dc1c9fe8
MM		 3605 return -1;
3606 }
3607
3608 return 0;
3609}
Qemu copy for testing