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