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