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Port -net socket to QemuOpts
[qemu.git] / net.c
CommitLineData
63a01ef8
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
63a01ef8
AL		 24#include <unistd.h>
25#include <fcntl.h>
26#include <signal.h>
27#include <time.h>
28#include <errno.h>
29#include <sys/time.h>
30#include <zlib.h>
31
71e72a19 32/* Needed early for CONFIG_BSD etc. */
d40cdb10
BS		 33#include "config-host.h"
34
63a01ef8
AL		 35#ifndef _WIN32
36#include <sys/times.h>
37#include <sys/wait.h>
38#include <termios.h>
39#include <sys/mman.h>
40#include <sys/ioctl.h>
24646c7e 41#include <sys/resource.h>
63a01ef8
AL		 42#include <sys/socket.h>
43#include <netinet/in.h>
24646c7e
BS		 44#include <net/if.h>
45#ifdef __NetBSD__
46#include <net/if_tap.h>
47#endif
48#ifdef __linux__
49#include <linux/if_tun.h>
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"
72cf2d4f 116#include "qemu-queue.h"
511d2b14
BS		 117
118
63a01ef8
AL		 119static VLANState *first_vlan;
120
121/***********************************************************/
122/* network device redirectors */
123
124#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
125static void hex_dump(FILE *f, const uint8_t *buf, int size)
126{
127 int len, i, j, c;
128
129 for(i=0;i<size;i+=16) {
130 len = size - i;
131 if (len > 16)
132 len = 16;
133 fprintf(f, "%08x ", i);
134 for(j=0;j<16;j++) {
135 if (j < len)
136 fprintf(f, " %02x", buf[i+j]);
137 else
138 fprintf(f, " ");
139 }
140 fprintf(f, " ");
141 for(j=0;j<len;j++) {
142 c = buf[i+j];
143 if (c < ' ' || c > '~')
144 c = '.';
145 fprintf(f, "%c", c);
146 }
147 fprintf(f, "\n");
148 }
149}
150#endif
151
152static int parse_macaddr(uint8_t *macaddr, const char *p)
153{
154 int i;
155 char *last_char;
156 long int offset;
157
158 errno = 0;
159 offset = strtol(p, &last_char, 0);
160 if (0 == errno && '\0' == *last_char &&
161 offset >= 0 && offset <= 0xFFFFFF) {
162 macaddr[3] = (offset & 0xFF0000) >> 16;
163 macaddr[4] = (offset & 0xFF00) >> 8;
164 macaddr[5] = offset & 0xFF;
165 return 0;
166 } else {
167 for(i = 0; i < 6; i++) {
168 macaddr[i] = strtol(p, (char **)&p, 16);
169 if (i == 5) {
170 if (*p != '\0')
171 return -1;
172 } else {
173 if (*p != ':' && *p != '-')
174 return -1;
175 p++;
176 }
177 }
178 return 0;
179 }
180
181 return -1;
182}
183
184static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
185{
186 const char *p, *p1;
187 int len;
188 p = *pp;
189 p1 = strchr(p, sep);
190 if (!p1)
191 return -1;
192 len = p1 - p;
193 p1++;
194 if (buf_size > 0) {
195 if (len > buf_size - 1)
196 len = buf_size - 1;
197 memcpy(buf, p, len);
198 buf[len] = '\0';
199 }
200 *pp = p1;
201 return 0;
202}
203
204int parse_host_src_port(struct sockaddr_in *haddr,
205 struct sockaddr_in *saddr,
206 const char *input_str)
207{
208 char *str = strdup(input_str);
209 char *host_str = str;
210 char *src_str;
211 const char *src_str2;
212 char *ptr;
213
214 /*
215 * Chop off any extra arguments at the end of the string which
216 * would start with a comma, then fill in the src port information
217 * if it was provided else use the "any address" and "any port".
218 */
219 if ((ptr = strchr(str,',')))
220 *ptr = '\0';
221
222 if ((src_str = strchr(input_str,'@'))) {
223 *src_str = '\0';
224 src_str++;
225 }
226
227 if (parse_host_port(haddr, host_str) < 0)
228 goto fail;
229
230 src_str2 = src_str;
231 if (!src_str || *src_str == '\0')
232 src_str2 = ":0";
233
234 if (parse_host_port(saddr, src_str2) < 0)
235 goto fail;
236
237 free(str);
238 return(0);
239
240fail:
241 free(str);
242 return -1;
243}
244
245int parse_host_port(struct sockaddr_in *saddr, const char *str)
246{
247 char buf[512];
248 struct hostent *he;
249 const char *p, *r;
250 int port;
251
252 p = str;
253 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
254 return -1;
255 saddr->sin_family = AF_INET;
256 if (buf[0] == '\0') {
257 saddr->sin_addr.s_addr = 0;
258 } else {
cd390083 259 if (qemu_isdigit(buf[0])) {
63a01ef8
AL		 260 if (!inet_aton(buf, &saddr->sin_addr))
261 return -1;
262 } else {
263 if ((he = gethostbyname(buf)) == NULL)
264 return - 1;
265 saddr->sin_addr = *(struct in_addr *)he->h_addr;
266 }
267 }
268 port = strtol(p, (char **)&r, 0);
269 if (r == p)
270 return -1;
271 saddr->sin_port = htons(port);
272 return 0;
273}
274
7cb7434b
AL		 275void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
276{
277 snprintf(vc->info_str, sizeof(vc->info_str),
4dda4063
AL		 278 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
279 vc->model,
7cb7434b
AL		 280 macaddr[0], macaddr[1], macaddr[2],
281 macaddr[3], macaddr[4], macaddr[5]);
282}
283
676cff29
AL		 284static char *assign_name(VLANClientState *vc1, const char *model)
285{
286 VLANState *vlan;
287 char buf[256];
288 int id = 0;
289
290 for (vlan = first_vlan; vlan; vlan = vlan->next) {
291 VLANClientState *vc;
292
293 for (vc = vlan->first_client; vc; vc = vc->next)
294 if (vc != vc1 && strcmp(vc->model, model) == 0)
295 id++;
296 }
297
298 snprintf(buf, sizeof(buf), "%s.%d", model, id);
299
02374aa0 300 return qemu_strdup(buf);
676cff29
AL		 301}
302
63a01ef8 303VLANClientState *qemu_new_vlan_client(VLANState *vlan,
bf38c1a0 304 const char *model,
7a9f6e4a 305 const char *name,
cda9046b
MM		 306 NetCanReceive *can_receive,
307 NetReceive *receive,
308 NetReceiveIOV *receive_iov,
b946a153 309 NetCleanup *cleanup,
63a01ef8
AL		 310 void *opaque)
311{
312 VLANClientState *vc, **pvc;
313 vc = qemu_mallocz(sizeof(VLANClientState));
02374aa0 314 vc->model = qemu_strdup(model);
7a9f6e4a 315 if (name)
02374aa0 316 vc->name = qemu_strdup(name);
7a9f6e4a
AL		 317 else
318 vc->name = assign_name(vc, model);
cda9046b
MM		 319 vc->can_receive = can_receive;
320 vc->receive = receive;
321 vc->receive_iov = receive_iov;
b946a153 322 vc->cleanup = cleanup;
63a01ef8
AL		 323 vc->opaque = opaque;
324 vc->vlan = vlan;
325
326 vc->next = NULL;
327 pvc = &vlan->first_client;
328 while (*pvc != NULL)
329 pvc = &(*pvc)->next;
330 *pvc = vc;
331 return vc;
332}
333
334void qemu_del_vlan_client(VLANClientState *vc)
335{
336 VLANClientState **pvc = &vc->vlan->first_client;
337
338 while (*pvc != NULL)
339 if (*pvc == vc) {
340 *pvc = vc->next;
b946a153
AL		 341 if (vc->cleanup) {
342 vc->cleanup(vc);
343 }
02374aa0
MM		 344 qemu_free(vc->name);
345 qemu_free(vc->model);
dad35419 346 qemu_free(vc);
63a01ef8
AL		 347 break;
348 } else
349 pvc = &(*pvc)->next;
350}
351
8b13c4a7
AL		 352VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
353{
354 VLANClientState **pvc = &vlan->first_client;
355
356 while (*pvc != NULL)
357 if ((*pvc)->opaque == opaque)
358 return *pvc;
359 else
360 pvc = &(*pvc)->next;
361
362 return NULL;
363}
364
1a609520
JK		 365static VLANClientState *
366qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
367 const char *client_str)
368{
369 VLANState *vlan;
370 VLANClientState *vc;
371
372 vlan = qemu_find_vlan(vlan_id, 0);
373 if (!vlan) {
374 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
375 return NULL;
376 }
377
378 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
379 if (!strcmp(vc->name, client_str)) {
380 break;
381 }
382 }
383 if (!vc) {
384 monitor_printf(mon, "can't find device %s on VLAN %d\n",
385 client_str, vlan_id);
386 }
387
388 return vc;
389}
390
2e1e0641 391int qemu_can_send_packet(VLANClientState *sender)
63a01ef8 392{
2e1e0641 393 VLANState *vlan = sender->vlan;
63a01ef8
AL		 394 VLANClientState *vc;
395
2e1e0641
MM		 396 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
397 if (vc == sender) {
398 continue;
399 }
400
cda9046b 401 /* no can_receive() handler, they can always receive */
e3f5ec2b 402 if (!vc->can_receive || vc->can_receive(vc)) {
2e1e0641 403 return 1;
63a01ef8
AL		 404 }
405 }
406 return 0;
407}
408
3e021d40 409static int
764a4d1d 410qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
63a01ef8 411{
63a01ef8 412 VLANClientState *vc;
3e021d40 413 int ret = -1;
63a01ef8 414
e94667b9
MM		 415 sender->vlan->delivering = 1;
416
764a4d1d 417 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
3e021d40
MM		 418 ssize_t len;
419
420 if (vc == sender) {
421 continue;
764a4d1d 422 }
3e021d40
MM		 423
424 if (vc->link_down) {
425 ret = size;
426 continue;
427 }
428
429 len = vc->receive(vc, buf, size);
430
431 ret = (ret >= 0) ? ret : len;
764a4d1d 432 }
3e021d40 433
e94667b9
MM		 434 sender->vlan->delivering = 0;
435
3e021d40 436 return ret;
764a4d1d
AL		 437}
438
8cad5516
MM		 439void qemu_purge_queued_packets(VLANClientState *vc)
440{
9da43187 441 VLANPacket *packet, *next;
8cad5516 442
72cf2d4f 443 QTAILQ_FOREACH_SAFE(packet, &vc->vlan->send_queue, entry, next) {
8cad5516 444 if (packet->sender == vc) {
72cf2d4f 445 QTAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
8cad5516 446 qemu_free(packet);
8cad5516
MM		 447 }
448 }
449}
450
f3b6c7fc 451void qemu_flush_queued_packets(VLANClientState *vc)
e94667b9 452{
72cf2d4f 453 while (!QTAILQ_EMPTY(&vc->vlan->send_queue)) {
9da43187 454 VLANPacket *packet;
f3b6c7fc
MM		 455 int ret;
456
72cf2d4f
BS		 457 packet = QTAILQ_FIRST(&vc->vlan->send_queue);
458 QTAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
f3b6c7fc
MM		 459
460 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
461 if (ret == 0 && packet->sent_cb != NULL) {
72cf2d4f 462 QTAILQ_INSERT_HEAD(&vc->vlan->send_queue, packet, entry);
f3b6c7fc
MM		 463 break;
464 }
465
466 if (packet->sent_cb)
783527a9 467 packet->sent_cb(packet->sender, ret);
f3b6c7fc 468
e94667b9
MM		 469 qemu_free(packet);
470 }
471}
472
f3b6c7fc
MM		 473static void qemu_enqueue_packet(VLANClientState *sender,
474 const uint8_t *buf, int size,
475 NetPacketSent *sent_cb)
e94667b9
MM		 476{
477 VLANPacket *packet;
478
479 packet = qemu_malloc(sizeof(VLANPacket) + size);
e94667b9
MM		 480 packet->sender = sender;
481 packet->size = size;
f3b6c7fc 482 packet->sent_cb = sent_cb;
e94667b9 483 memcpy(packet->data, buf, size);
9da43187 484
72cf2d4f 485 QTAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
e94667b9
MM		 486}
487
f3b6c7fc
MM		 488ssize_t qemu_send_packet_async(VLANClientState *sender,
489 const uint8_t *buf, int size,
490 NetPacketSent *sent_cb)
764a4d1d 491{
f3b6c7fc 492 int ret;
764a4d1d 493
f3b6c7fc
MM		 494 if (sender->link_down) {
495 return size;
496 }
436e5e53 497
63a01ef8 498#ifdef DEBUG_NET
f3b6c7fc 499 printf("vlan %d send:\n", sender->vlan->id);
63a01ef8
AL		 500 hex_dump(stdout, buf, size);
501#endif
f3b6c7fc
MM		 502
503 if (sender->vlan->delivering) {
504 qemu_enqueue_packet(sender, buf, size, NULL);
505 return size;
506 }
507
508 ret = qemu_deliver_packet(sender, buf, size);
509 if (ret == 0 && sent_cb != NULL) {
510 qemu_enqueue_packet(sender, buf, size, sent_cb);
511 return 0;
63a01ef8 512 }
e94667b9 513
f3b6c7fc
MM		 514 qemu_flush_queued_packets(sender);
515
516 return ret;
517}
518
519void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
520{
521 qemu_send_packet_async(vc, buf, size, NULL);
63a01ef8
AL		 522}
523
fbe78f4f
AL		 524static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
525 int iovcnt)
526{
527 uint8_t buffer[4096];
528 size_t offset = 0;
529 int i;
530
531 for (i = 0; i < iovcnt; i++) {
532 size_t len;
533
534 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
535 memcpy(buffer + offset, iov[i].iov_base, len);
536 offset += len;
537 }
538
f3b6c7fc 539 return vc->receive(vc, buffer, offset);
fbe78f4f
AL		 540}
541
e0e7877a
AL		 542static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
543{
544 size_t offset = 0;
545 int i;
546
547 for (i = 0; i < iovcnt; i++)
548 offset += iov[i].iov_len;
549 return offset;
550}
551
e94667b9
MM		 552static int qemu_deliver_packet_iov(VLANClientState *sender,
553 const struct iovec *iov, int iovcnt)
fbe78f4f 554{
fbe78f4f 555 VLANClientState *vc;
e94667b9
MM		 556 int ret = -1;
557
558 sender->vlan->delivering = 1;
559
560 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
561 ssize_t len;
562
563 if (vc == sender) {
564 continue;
565 }
566
567 if (vc->link_down) {
568 ret = calc_iov_length(iov, iovcnt);
569 continue;
570 }
571
572 if (vc->receive_iov) {
573 len = vc->receive_iov(vc, iov, iovcnt);
574 } else {
575 len = vc_sendv_compat(vc, iov, iovcnt);
576 }
577
578 ret = (ret >= 0) ? ret : len;
579 }
580
581 sender->vlan->delivering = 0;
582
583 return ret;
584}
585
586static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
f3b6c7fc
MM		 587 const struct iovec *iov, int iovcnt,
588 NetPacketSent *sent_cb)
e94667b9 589{
c27ff608 590 VLANPacket *packet;
e94667b9 591 size_t max_len = 0;
c27ff608 592 int i;
fbe78f4f 593
e94667b9 594 max_len = calc_iov_length(iov, iovcnt);
e0e7877a 595
e94667b9 596 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
e94667b9 597 packet->sender = sender;
f3b6c7fc 598 packet->sent_cb = sent_cb;
e94667b9 599 packet->size = 0;
c27ff608 600
e94667b9
MM		 601 for (i = 0; i < iovcnt; i++) {
602 size_t len = iov[i].iov_len;
c27ff608 603
e94667b9
MM		 604 memcpy(packet->data + packet->size, iov[i].iov_base, len);
605 packet->size += len;
606 }
fbe78f4f 607
72cf2d4f 608 QTAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
fbe78f4f 609
e94667b9
MM		 610 return packet->size;
611}
fbe78f4f 612
f3b6c7fc
MM		 613ssize_t qemu_sendv_packet_async(VLANClientState *sender,
614 const struct iovec *iov, int iovcnt,
615 NetPacketSent *sent_cb)
e94667b9
MM		 616{
617 int ret;
618
619 if (sender->link_down) {
620 return calc_iov_length(iov, iovcnt);
621 }
622
623 if (sender->vlan->delivering) {
f3b6c7fc 624 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
fbe78f4f
AL		 625 }
626
e94667b9 627 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
f3b6c7fc
MM		 628 if (ret == 0 && sent_cb != NULL) {
629 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
630 return 0;
631 }
e94667b9
MM		 632
633 qemu_flush_queued_packets(sender);
634
635 return ret;
fbe78f4f
AL		 636}
637
f3b6c7fc
MM		 638ssize_t
639qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
640{
641 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
642}
643
63a01ef8
AL		 644#if defined(CONFIG_SLIRP)
645
646/* slirp network adapter */
647
c92ef6a2
JK		 648#define SLIRP_CFG_HOSTFWD 1
649#define SLIRP_CFG_LEGACY 2
ad196a9d 650
b8e8af38
JK		 651struct slirp_config_str {
652 struct slirp_config_str *next;
ad196a9d
JK		 653 int flags;
654 char str[1024];
c92ef6a2 655 int legacy_format;
b8e8af38
JK		 656};
657
9f8bd042 658typedef struct SlirpState {
72cf2d4f 659 QTAILQ_ENTRY(SlirpState) entry;
9f8bd042
JK		 660 VLANClientState *vc;
661 Slirp *slirp;
28432466
JK		 662#ifndef _WIN32
663 char smb_dir[128];
664#endif
9f8bd042
JK		 665} SlirpState;
666
ad196a9d
JK		 667static struct slirp_config_str *slirp_configs;
668const char *legacy_tftp_prefix;
669const char *legacy_bootp_filename;
72cf2d4f
BS		 670static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
671 QTAILQ_HEAD_INITIALIZER(slirp_stacks);
63a01ef8 672
fb12577c 673static int slirp_hostfwd(SlirpState *s, const char *redir_str,
0752706d 674 int legacy_format);
fb12577c 675static int slirp_guestfwd(SlirpState *s, const char *config_str,
3c6a0580 676 int legacy_format);
ad196a9d 677
c5b76b38 678#ifndef _WIN32
ad196a9d
JK		 679static const char *legacy_smb_export;
680
fb12577c 681static int slirp_smb(SlirpState *s, const char *exported_dir,
0752706d 682 struct in_addr vserver_addr);
28432466
JK		 683static void slirp_smb_cleanup(SlirpState *s);
684#else
685static inline void slirp_smb_cleanup(SlirpState *s) { }
c5b76b38 686#endif
b8e8af38 687
9f8bd042 688int slirp_can_output(void *opaque)
63a01ef8 689{
9f8bd042
JK		 690 SlirpState *s = opaque;
691
692 return qemu_can_send_packet(s->vc);
63a01ef8
AL		 693}
694
9f8bd042 695void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
63a01ef8 696{
9f8bd042
JK		 697 SlirpState *s = opaque;
698
63a01ef8
AL		 699#ifdef DEBUG_SLIRP
700 printf("slirp output:\n");
701 hex_dump(stdout, pkt, pkt_len);
702#endif
9f8bd042 703 qemu_send_packet(s->vc, pkt, pkt_len);
63a01ef8
AL		 704}
705
4f1c942b 706static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 707{
9f8bd042
JK		 708 SlirpState *s = vc->opaque;
709
63a01ef8
AL		 710#ifdef DEBUG_SLIRP
711 printf("slirp input:\n");
712 hex_dump(stdout, buf, size);
713#endif
9f8bd042 714 slirp_input(s->slirp, buf, size);
4f1c942b 715 return size;
63a01ef8
AL		 716}
717
8d6249a7
AL		 718static void net_slirp_cleanup(VLANClientState *vc)
719{
ad0d8c4c
JK		 720 SlirpState *s = vc->opaque;
721
722 slirp_cleanup(s->slirp);
28432466 723 slirp_smb_cleanup(s);
72cf2d4f 724 QTAILQ_REMOVE(&slirp_stacks, s, entry);
ad0d8c4c 725 qemu_free(s);
8d6249a7
AL		 726}
727
fb12577c 728static int net_slirp_init(VLANState *vlan, const char *model,
c92ef6a2
JK		 729 const char *name, int restricted,
730 const char *vnetwork, const char *vhost,
731 const char *vhostname, const char *tftp_export,
732 const char *bootfile, const char *vdhcp_start,
733 const char *vnameserver, const char *smb_export,
734 const char *vsmbserver)
63a01ef8 735{
ad0d8c4c 736 /* default settings according to historic slirp */
8389e7f4
AL		 737 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
738 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
ad0d8c4c
JK		 739 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
740 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
741 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
c92ef6a2 742#ifndef _WIN32
ad0d8c4c 743 struct in_addr smbsrv = { .s_addr = 0 };
c92ef6a2 744#endif
ad0d8c4c
JK		 745 SlirpState *s;
746 char buf[20];
747 uint32_t addr;
748 int shift;
749 char *end;
3a179c66 750 struct slirp_config_str *config;
ad0d8c4c
JK		 751
752 if (!tftp_export) {
753 tftp_export = legacy_tftp_prefix;
754 }
755 if (!bootfile) {
756 bootfile = legacy_bootp_filename;
757 }
c92ef6a2 758
ad0d8c4c
JK		 759 if (vnetwork) {
760 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
761 if (!inet_aton(vnetwork, &net)) {
762 return -1;
763 }
764 addr = ntohl(net.s_addr);
765 if (!(addr & 0x80000000)) {
766 mask.s_addr = htonl(0xff000000); /* class A */
767 } else if ((addr & 0xfff00000) == 0xac100000) {
768 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
769 } else if ((addr & 0xc0000000) == 0x80000000) {
770 mask.s_addr = htonl(0xffff0000); /* class B */
771 } else if ((addr & 0xffff0000) == 0xc0a80000) {
772 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
773 } else if ((addr & 0xffff0000) == 0xc6120000) {
774 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
775 } else if ((addr & 0xe0000000) == 0xe0000000) {
776 mask.s_addr = htonl(0xffffff00); /* class C */
c92ef6a2 777 } else {
ad0d8c4c
JK		 778 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
779 }
780 } else {
781 if (!inet_aton(buf, &net)) {
782 return -1;
783 }
784 shift = strtol(vnetwork, &end, 10);
785 if (*end != '\0') {
786 if (!inet_aton(vnetwork, &mask)) {
c92ef6a2 787 return -1;
c92ef6a2 788 }
ad0d8c4c
JK		 789 } else if (shift < 4 || shift > 32) {
790 return -1;
791 } else {
792 mask.s_addr = htonl(0xffffffff << (32 - shift));
c92ef6a2 793 }
c92ef6a2 794 }
ad0d8c4c
JK		 795 net.s_addr &= mask.s_addr;
796 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
797 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
798 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
799 }
c92ef6a2 800
ad0d8c4c
JK		 801 if (vhost && !inet_aton(vhost, &host)) {
802 return -1;
803 }
804 if ((host.s_addr & mask.s_addr) != net.s_addr) {
805 return -1;
806 }
c92ef6a2 807
ad0d8c4c
JK		 808 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
809 return -1;
810 }
811 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
812 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
813 return -1;
814 }
c92ef6a2 815
ad0d8c4c
JK		 816 if (vnameserver && !inet_aton(vnameserver, &dns)) {
817 return -1;
818 }
819 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
820 dns.s_addr == host.s_addr) {
821 return -1;
822 }
c92ef6a2
JK		 823
824#ifndef _WIN32
ad0d8c4c
JK		 825 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
826 return -1;
827 }
c92ef6a2
JK		 828#endif
829
ad0d8c4c
JK		 830 s = qemu_mallocz(sizeof(SlirpState));
831 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
832 tftp_export, bootfile, dhcp, dns, s);
72cf2d4f 833 QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
b8e8af38 834
3a179c66 835 for (config = slirp_configs; config; config = config->next) {
ad0d8c4c 836 if (config->flags & SLIRP_CFG_HOSTFWD) {
fb12577c 837 if (slirp_hostfwd(s, config->str,
0752706d
MA		 838 config->flags & SLIRP_CFG_LEGACY) < 0)
839 return -1;
ad0d8c4c 840 } else {
fb12577c 841 if (slirp_guestfwd(s, config->str,
0752706d
MA		 842 config->flags & SLIRP_CFG_LEGACY) < 0)
843 return -1;
b8e8af38 844 }
ad0d8c4c 845 }
b8e8af38 846#ifndef _WIN32
ad0d8c4c
JK		 847 if (!smb_export) {
848 smb_export = legacy_smb_export;
849 }
850 if (smb_export) {
fb12577c 851 if (slirp_smb(s, smb_export, smbsrv) < 0)
0752706d 852 return -1;
63a01ef8 853 }
ad0d8c4c 854#endif
b8e8af38 855
9f8bd042
JK		 856 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
857 net_slirp_cleanup, s);
fc57bc57
JK		 858 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
859 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
63a01ef8
AL		 860 return 0;
861}
862
f13b572c
JK		 863static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
864 const char *stack)
865{
866 VLANClientState *vc;
867
868 if (vlan) {
869 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
870 if (!vc) {
871 return NULL;
872 }
873 if (strcmp(vc->model, "user")) {
874 monitor_printf(mon, "invalid device specified\n");
875 return NULL;
876 }
877 return vc->opaque;
878 } else {
72cf2d4f 879 if (QTAILQ_EMPTY(&slirp_stacks)) {
f13b572c
JK		 880 monitor_printf(mon, "user mode network stack not in use\n");
881 return NULL;
882 }
72cf2d4f 883 return QTAILQ_FIRST(&slirp_stacks);
f13b572c
JK		 884 }
885}
886
1d4daa91 887void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
c1261d8d 888{
3c6a0580 889 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c1261d8d
AG		 890 int host_port;
891 char buf[256] = "";
f13b572c
JK		 892 const char *src_str, *p;
893 SlirpState *s;
c1261d8d 894 int is_udp = 0;
9c12a6f2 895 int err;
1d4daa91
LC		 896 const char *arg1 = qdict_get_str(qdict, "arg1");
897 const char *arg2 = qdict_get_try_str(qdict, "arg2");
898 const char *arg3 = qdict_get_try_str(qdict, "arg3");
c1261d8d 899
f13b572c
JK		 900 if (arg2) {
901 s = slirp_lookup(mon, arg1, arg2);
902 src_str = arg3;
903 } else {
904 s = slirp_lookup(mon, NULL, NULL);
905 src_str = arg1;
906 }
907 if (!s) {
c1261d8d 908 return;
f3546deb 909 }
c1261d8d 910
3c6a0580 911 if (!src_str || !src_str[0])
c1261d8d
AG		 912 goto fail_syntax;
913
f13b572c 914 p = src_str;
c1261d8d
AG		 915 get_str_sep(buf, sizeof(buf), &p, ':');
916
917 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
918 is_udp = 0;
919 } else if (!strcmp(buf, "udp")) {
920 is_udp = 1;
921 } else {
922 goto fail_syntax;
923 }
924
3c6a0580
JK		 925 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
926 goto fail_syntax;
927 }
928 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
929 goto fail_syntax;
930 }
931
c1261d8d
AG		 932 host_port = atoi(p);
933
72cf2d4f 934 err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
9f8bd042 935 host_addr, host_port);
c1261d8d 936
9c12a6f2
JK		 937 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
938 err ? "removed" : "not found");
c1261d8d
AG		 939 return;
940
941 fail_syntax:
942 monitor_printf(mon, "invalid format\n");
943}
944
fb12577c 945static int slirp_hostfwd(SlirpState *s, const char *redir_str,
0752706d 946 int legacy_format)
63a01ef8 947{
3c6a0580 948 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c92ef6a2 949 struct in_addr guest_addr = { .s_addr = 0 };
63a01ef8 950 int host_port, guest_port;
b8e8af38 951 const char *p;
c92ef6a2 952 char buf[256];
b8e8af38 953 int is_udp;
c92ef6a2 954 char *end;
1c6ed9f3 955
63a01ef8 956 p = redir_str;
f13b572c 957 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 958 goto fail_syntax;
b8e8af38 959 }
d4ebe193 960 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
63a01ef8
AL		 961 is_udp = 0;
962 } else if (!strcmp(buf, "udp")) {
963 is_udp = 1;
964 } else {
d4ebe193 965 goto fail_syntax;
63a01ef8
AL		 966 }
967
3c6a0580
JK		 968 if (!legacy_format) {
969 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
970 goto fail_syntax;
971 }
972 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
973 goto fail_syntax;
974 }
975 }
976
977 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
d4ebe193 978 goto fail_syntax;
b8e8af38 979 }
c92ef6a2
JK		 980 host_port = strtol(buf, &end, 0);
981 if (*end != '\0' || host_port < 1 || host_port > 65535) {
d4ebe193 982 goto fail_syntax;
b8e8af38 983 }
63a01ef8 984
b8e8af38 985 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 986 goto fail_syntax;
b8e8af38 987 }
c92ef6a2 988 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
d4ebe193 989 goto fail_syntax;
b8e8af38 990 }
63a01ef8 991
c92ef6a2
JK		 992 guest_port = strtol(p, &end, 0);
993 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
d4ebe193 994 goto fail_syntax;
b8e8af38 995 }
63a01ef8 996
9f8bd042
JK		 997 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
998 guest_port) < 0) {
fb12577c
MA		 999 qemu_error("could not set up host forwarding rule '%s'\n",
1000 redir_str);
0752706d 1001 return -1;
63a01ef8 1002 }
0752706d 1003 return 0;
d4ebe193
AL		 1004
1005 fail_syntax:
fb12577c 1006 qemu_error("invalid host forwarding rule '%s'\n", redir_str);
0752706d 1007 return -1;
63a01ef8
AL		 1008}
1009
1d4daa91 1010void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
b8e8af38 1011{
f13b572c
JK		 1012 const char *redir_str;
1013 SlirpState *s;
1d4daa91
LC		 1014 const char *arg1 = qdict_get_str(qdict, "arg1");
1015 const char *arg2 = qdict_get_try_str(qdict, "arg2");
1016 const char *arg3 = qdict_get_try_str(qdict, "arg3");
f13b572c
JK		 1017
1018 if (arg2) {
1019 s = slirp_lookup(mon, arg1, arg2);
1020 redir_str = arg3;
1021 } else {
1022 s = slirp_lookup(mon, NULL, NULL);
1023 redir_str = arg1;
1024 }
1025 if (s) {
fb12577c 1026 slirp_hostfwd(s, redir_str, 0);
b8e8af38
JK		 1027 }
1028
f3546deb
JK		 1029}
1030
0752706d 1031int net_slirp_redir(const char *redir_str)
f3546deb
JK		 1032{
1033 struct slirp_config_str *config;
1034
72cf2d4f 1035 if (QTAILQ_EMPTY(&slirp_stacks)) {
f3546deb
JK		 1036 config = qemu_malloc(sizeof(*config));
1037 pstrcpy(config->str, sizeof(config->str), redir_str);
3c6a0580 1038 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
f3546deb
JK		 1039 config->next = slirp_configs;
1040 slirp_configs = config;
0752706d 1041 return 0;
b8e8af38
JK		 1042 }
1043
fb12577c 1044 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
b8e8af38
JK		 1045}
1046
63a01ef8
AL		 1047#ifndef _WIN32
1048
63a01ef8 1049/* automatic user mode samba server configuration */
28432466 1050static void slirp_smb_cleanup(SlirpState *s)
63a01ef8 1051{
28432466 1052 char cmd[128];
09c18925 1053
28432466
JK		 1054 if (s->smb_dir[0] != '\0') {
1055 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1056 system(cmd);
1057 s->smb_dir[0] = '\0';
1058 }
63a01ef8
AL		 1059}
1060
fb12577c 1061static int slirp_smb(SlirpState* s, const char *exported_dir,
0752706d 1062 struct in_addr vserver_addr)
63a01ef8 1063{
28432466
JK		 1064 static int instance;
1065 char smb_conf[128];
1066 char smb_cmdline[128];
63a01ef8
AL		 1067 FILE *f;
1068
28432466
JK		 1069 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1070 (long)getpid(), instance++);
1071 if (mkdir(s->smb_dir, 0700) < 0) {
fb12577c 1072 qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
0752706d 1073 return -1;
63a01ef8 1074 }
28432466 1075 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
63a01ef8
AL		 1076
1077 f = fopen(smb_conf, "w");
1078 if (!f) {
28432466 1079 slirp_smb_cleanup(s);
fb12577c
MA		 1080 qemu_error("could not create samba server configuration file '%s'\n",
1081 smb_conf);
0752706d 1082 return -1;
63a01ef8
AL		 1083 }
1084 fprintf(f,
1085 "[global]\n"
1086 "private dir=%s\n"
1087 "smb ports=0\n"
1088 "socket address=127.0.0.1\n"
1089 "pid directory=%s\n"
1090 "lock directory=%s\n"
1091 "log file=%s/log.smbd\n"
1092 "smb passwd file=%s/smbpasswd\n"
1093 "security = share\n"
1094 "[qemu]\n"
1095 "path=%s\n"
1096 "read only=no\n"
1097 "guest ok=yes\n",
28432466
JK		 1098 s->smb_dir,
1099 s->smb_dir,
1100 s->smb_dir,
1101 s->smb_dir,
1102 s->smb_dir,
63a01ef8
AL		 1103 exported_dir
1104 );
1105 fclose(f);
63a01ef8
AL		 1106
1107 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1108 SMBD_COMMAND, smb_conf);
1109
bb53fc53 1110 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
28432466 1111 slirp_smb_cleanup(s);
fb12577c 1112 qemu_error("conflicting/invalid smbserver address\n");
0752706d 1113 return -1;
c92ef6a2 1114 }
0752706d 1115 return 0;
63a01ef8
AL		 1116}
1117
ad196a9d 1118/* automatic user mode samba server configuration (legacy interface) */
0752706d 1119int net_slirp_smb(const char *exported_dir)
b8e8af38 1120{
c92ef6a2
JK		 1121 struct in_addr vserver_addr = { .s_addr = 0 };
1122
ad196a9d 1123 if (legacy_smb_export) {
b8e8af38 1124 fprintf(stderr, "-smb given twice\n");
0752706d 1125 return -1;
b8e8af38 1126 }
ad196a9d 1127 legacy_smb_export = exported_dir;
72cf2d4f 1128 if (!QTAILQ_EMPTY(&slirp_stacks)) {
fb12577c 1129 return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
0752706d 1130 vserver_addr);
b8e8af38 1131 }
0752706d 1132 return 0;
b8e8af38
JK		 1133}
1134
63a01ef8 1135#endif /* !defined(_WIN32) */
b8e8af38 1136
c92ef6a2 1137struct GuestFwd {
8ca9217d 1138 CharDriverState *hd;
c92ef6a2 1139 struct in_addr server;
8ca9217d 1140 int port;
9f8bd042 1141 Slirp *slirp;
511d2b14 1142};
8ca9217d 1143
c92ef6a2 1144static int guestfwd_can_read(void *opaque)
8ca9217d 1145{
c92ef6a2 1146 struct GuestFwd *fwd = opaque;
9f8bd042 1147 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
8ca9217d
AL		 1148}
1149
c92ef6a2 1150static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
8ca9217d 1151{
c92ef6a2 1152 struct GuestFwd *fwd = opaque;
9f8bd042 1153 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
8ca9217d
AL		 1154}
1155
fb12577c 1156static int slirp_guestfwd(SlirpState *s, const char *config_str,
0752706d 1157 int legacy_format)
ad196a9d 1158{
c92ef6a2
JK		 1159 struct in_addr server = { .s_addr = 0 };
1160 struct GuestFwd *fwd;
1161 const char *p;
1162 char buf[128];
1163 char *end;
ad196a9d
JK		 1164 int port;
1165
c92ef6a2
JK		 1166 p = config_str;
1167 if (legacy_format) {
1168 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1169 goto fail_syntax;
1170 }
1171 } else {
1172 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1173 goto fail_syntax;
1174 }
1175 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1176 goto fail_syntax;
1177 }
1178 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1179 goto fail_syntax;
1180 }
1181 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1182 goto fail_syntax;
1183 }
1184 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1185 goto fail_syntax;
1186 }
1187 }
1188 port = strtol(buf, &end, 10);
1189 if (*end != '\0' || port < 1 || port > 65535) {
1190 goto fail_syntax;
ad196a9d 1191 }
ad196a9d 1192
c92ef6a2
JK		 1193 fwd = qemu_malloc(sizeof(struct GuestFwd));
1194 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1195 fwd->hd = qemu_chr_open(buf, p, NULL);
1196 if (!fwd->hd) {
fb12577c 1197 qemu_error("could not open guest forwarding device '%s'\n", buf);
c92ef6a2 1198 qemu_free(fwd);
0752706d 1199 return -1;
ad196a9d 1200 }
ad196a9d 1201
bb53fc53 1202 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
fb12577c
MA		 1203 qemu_error("conflicting/invalid host:port in guest forwarding "
1204 "rule '%s'\n", config_str);
c92ef6a2 1205 qemu_free(fwd);
0752706d 1206 return -1;
c92ef6a2 1207 }
bb53fc53
JK		 1208 fwd->server = server;
1209 fwd->port = port;
1210 fwd->slirp = s->slirp;
1211
c92ef6a2
JK		 1212 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1213 NULL, fwd);
0752706d 1214 return 0;
c92ef6a2
JK		 1215
1216 fail_syntax:
fb12577c 1217 qemu_error("invalid guest forwarding rule '%s'\n", config_str);
0752706d 1218 return -1;
ad196a9d
JK		 1219}
1220
6dbe553f
JK		 1221void do_info_usernet(Monitor *mon)
1222{
b1c99fcd 1223 SlirpState *s;
9f8bd042 1224
72cf2d4f 1225 QTAILQ_FOREACH(s, &slirp_stacks, entry) {
b1c99fcd
JK		 1226 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1227 slirp_connection_info(s->slirp, mon);
9f8bd042 1228 }
6dbe553f
JK		 1229}
1230
63a01ef8
AL		 1231#endif /* CONFIG_SLIRP */
1232
1233#if !defined(_WIN32)
1234
1235typedef struct TAPState {
1236 VLANClientState *vc;
1237 int fd;
1238 char down_script[1024];
973cbd37 1239 char down_script_arg[128];
5b01e886 1240 uint8_t buf[4096];
b664e367 1241 unsigned int read_poll : 1;
1f7babf6 1242 unsigned int write_poll : 1;
63a01ef8
AL		 1243} TAPState;
1244
b946a153
AL		 1245static int launch_script(const char *setup_script, const char *ifname, int fd);
1246
b664e367
MM		 1247static int tap_can_send(void *opaque);
1248static void tap_send(void *opaque);
1f7babf6 1249static void tap_writable(void *opaque);
b664e367
MM		 1250
1251static void tap_update_fd_handler(TAPState *s)
1252{
1253 qemu_set_fd_handler2(s->fd,
1254 s->read_poll ? tap_can_send : NULL,
1255 s->read_poll ? tap_send : NULL,
1f7babf6 1256 s->write_poll ? tap_writable : NULL,
b664e367
MM		 1257 s);
1258}
1259
1260static void tap_read_poll(TAPState *s, int enable)
1261{
1262 s->read_poll = !!enable;
1263 tap_update_fd_handler(s);
1264}
1265
1f7babf6
MM		 1266static void tap_write_poll(TAPState *s, int enable)
1267{
1268 s->write_poll = !!enable;
1269 tap_update_fd_handler(s);
1270}
1271
1272static void tap_writable(void *opaque)
1273{
1274 TAPState *s = opaque;
1275
1276 tap_write_poll(s, 0);
1277
1278 qemu_flush_queued_packets(s->vc);
1279}
1280
e3f5ec2b 1281static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
b535b7b2
AL		 1282 int iovcnt)
1283{
e3f5ec2b 1284 TAPState *s = vc->opaque;
b535b7b2
AL		 1285 ssize_t len;
1286
1287 do {
1288 len = writev(s->fd, iov, iovcnt);
1f7babf6
MM		 1289 } while (len == -1 && errno == EINTR);
1290
1291 if (len == -1 && errno == EAGAIN) {
1292 tap_write_poll(s, 1);
1293 return 0;
1294 }
b535b7b2
AL		 1295
1296 return len;
1297}
b535b7b2 1298
4f1c942b 1299static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1300{
e3f5ec2b 1301 TAPState *s = vc->opaque;
4f1c942b
MM		 1302 ssize_t len;
1303
1304 do {
1305 len = write(s->fd, buf, size);
1306 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1307
1308 return len;
63a01ef8
AL		 1309}
1310
3471b757
MM		 1311static int tap_can_send(void *opaque)
1312{
1313 TAPState *s = opaque;
1314
1315 return qemu_can_send_packet(s->vc);
1316}
1317
63a01ef8 1318#ifdef __sun__
5a6d8815
MM		 1319static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1320{
63a01ef8
AL		 1321 struct strbuf sbuf;
1322 int f = 0;
5a6d8815
MM		 1323
1324 sbuf.maxlen = maxlen;
3f4cb3d3 1325 sbuf.buf = (char *)buf;
5a6d8815
MM		 1326
1327 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1328}
63a01ef8 1329#else
5a6d8815
MM		 1330static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1331{
1332 return read(tapfd, buf, maxlen);
1333}
63a01ef8 1334#endif
5a6d8815 1335
783527a9 1336static void tap_send_completed(VLANClientState *vc, ssize_t len)
e19eb224
MM		 1337{
1338 TAPState *s = vc->opaque;
b664e367 1339 tap_read_poll(s, 1);
e19eb224
MM		 1340}
1341
5a6d8815
MM		 1342static void tap_send(void *opaque)
1343{
1344 TAPState *s = opaque;
5a6d8815
MM		 1345 int size;
1346
e19eb224
MM		 1347 do {
1348 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1349 if (size <= 0) {
1350 break;
1351 }
1352
1353 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1354 if (size == 0) {
b664e367 1355 tap_read_poll(s, 0);
e19eb224
MM		 1356 }
1357 } while (size > 0);
63a01ef8
AL		 1358}
1359
0df0ff6d 1360#ifdef TUNSETSNDBUF
fc5b81d1
MM		 1361/* sndbuf should be set to a value lower than the tx queue
1362 * capacity of any destination network interface.
1363 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1364 * a good default, given a 1500 byte MTU.
1365 */
1366#define TAP_DEFAULT_SNDBUF 1024*1024
1367
8a1c5235 1368static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
fc5b81d1 1369{
8a1c5235 1370 int sndbuf;
fc5b81d1 1371
8a1c5235 1372 sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF);
fc5b81d1
MM		 1373 if (!sndbuf) {
1374 sndbuf = INT_MAX;
1375 }
1376
8a1c5235 1377 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) {
fb12577c 1378 qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno));
0752706d 1379 return -1;
0df0ff6d 1380 }
0752706d 1381 return 0;
fc5b81d1 1382}
0df0ff6d 1383#else
8a1c5235 1384static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
fc5b81d1 1385{
0752706d 1386 return 0;
0df0ff6d 1387}
fc5b81d1 1388#endif /* TUNSETSNDBUF */
0df0ff6d 1389
b946a153
AL		 1390static void tap_cleanup(VLANClientState *vc)
1391{
1392 TAPState *s = vc->opaque;
1393
b9adce2c
MM		 1394 qemu_purge_queued_packets(vc);
1395
b946a153
AL		 1396 if (s->down_script[0])
1397 launch_script(s->down_script, s->down_script_arg, s->fd);
1398
b664e367 1399 tap_read_poll(s, 0);
1f7babf6 1400 tap_write_poll(s, 0);
b946a153
AL		 1401 close(s->fd);
1402 qemu_free(s);
1403}
1404
63a01ef8
AL		 1405/* fd support */
1406
7a9f6e4a
AL		 1407static TAPState *net_tap_fd_init(VLANState *vlan,
1408 const char *model,
1409 const char *name,
1410 int fd)
63a01ef8
AL		 1411{
1412 TAPState *s;
1413
1414 s = qemu_mallocz(sizeof(TAPState));
63a01ef8 1415 s->fd = fd;
463af534
MM		 1416 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1417 tap_receive_iov, tap_cleanup, s);
b664e367 1418 tap_read_poll(s, 1);
7cb7434b 1419 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
63a01ef8
AL		 1420 return s;
1421}
1422
71e72a19 1423#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
63a01ef8
AL		 1424static int tap_open(char *ifname, int ifname_size)
1425{
1426 int fd;
1427 char *dev;
1428 struct stat s;
1429
1430 TFR(fd = open("/dev/tap", O_RDWR));
1431 if (fd < 0) {
1432 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1433 return -1;
1434 }
1435
1436 fstat(fd, &s);
1437 dev = devname(s.st_rdev, S_IFCHR);
1438 pstrcpy(ifname, ifname_size, dev);
1439
1440 fcntl(fd, F_SETFL, O_NONBLOCK);
1441 return fd;
1442}
1443#elif defined(__sun__)
1444#define TUNNEWPPA (('T'<<16) | 0x0001)
1445/*
1446 * Allocate TAP device, returns opened fd.
1447 * Stores dev name in the first arg(must be large enough).
1448 */
3f4cb3d3 1449static int tap_alloc(char *dev, size_t dev_size)
63a01ef8
AL		 1450{
1451 int tap_fd, if_fd, ppa = -1;
1452 static int ip_fd = 0;
1453 char *ptr;
1454
1455 static int arp_fd = 0;
1456 int ip_muxid, arp_muxid;
1457 struct strioctl strioc_if, strioc_ppa;
1458 int link_type = I_PLINK;;
1459 struct lifreq ifr;
1460 char actual_name[32] = "";
1461
1462 memset(&ifr, 0x0, sizeof(ifr));
1463
1464 if( *dev ){
1465 ptr = dev;
47398b9c 1466 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
63a01ef8
AL		 1467 ppa = atoi(ptr);
1468 }
1469
1470 /* Check if IP device was opened */
1471 if( ip_fd )
1472 close(ip_fd);
1473
1474 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1475 if (ip_fd < 0) {
1476 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1477 return -1;
1478 }
1479
1480 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1481 if (tap_fd < 0) {
1482 syslog(LOG_ERR, "Can't open /dev/tap");
1483 return -1;
1484 }
1485
1486 /* Assign a new PPA and get its unit number. */
1487 strioc_ppa.ic_cmd = TUNNEWPPA;
1488 strioc_ppa.ic_timout = 0;
1489 strioc_ppa.ic_len = sizeof(ppa);
1490 strioc_ppa.ic_dp = (char *)&ppa;
1491 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1492 syslog (LOG_ERR, "Can't assign new interface");
1493
1494 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1495 if (if_fd < 0) {
1496 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1497 return -1;
1498 }
1499 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1500 syslog(LOG_ERR, "Can't push IP module");
1501 return -1;
1502 }
1503
1504 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1505 syslog(LOG_ERR, "Can't get flags\n");
1506
1507 snprintf (actual_name, 32, "tap%d", ppa);
1508 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1509
1510 ifr.lifr_ppa = ppa;
1511 /* Assign ppa according to the unit number returned by tun device */
1512
1513 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1514 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1515 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1516 syslog (LOG_ERR, "Can't get flags\n");
1517 /* Push arp module to if_fd */
1518 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1519 syslog (LOG_ERR, "Can't push ARP module (2)");
1520
1521 /* Push arp module to ip_fd */
1522 if (ioctl (ip_fd, I_POP, NULL) < 0)
1523 syslog (LOG_ERR, "I_POP failed\n");
1524 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1525 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1526 /* Open arp_fd */
1527 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1528 if (arp_fd < 0)
1529 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1530
1531 /* Set ifname to arp */
1532 strioc_if.ic_cmd = SIOCSLIFNAME;
1533 strioc_if.ic_timout = 0;
1534 strioc_if.ic_len = sizeof(ifr);
1535 strioc_if.ic_dp = (char *)&ifr;
1536 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1537 syslog (LOG_ERR, "Can't set ifname to arp\n");
1538 }
1539
1540 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1541 syslog(LOG_ERR, "Can't link TAP device to IP");
1542 return -1;
1543 }
1544
1545 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1546 syslog (LOG_ERR, "Can't link TAP device to ARP");
1547
1548 close (if_fd);
1549
1550 memset(&ifr, 0x0, sizeof(ifr));
1551 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1552 ifr.lifr_ip_muxid = ip_muxid;
1553 ifr.lifr_arp_muxid = arp_muxid;
1554
1555 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1556 {
1557 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1558 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1559 syslog (LOG_ERR, "Can't set multiplexor id");
1560 }
1561
1562 snprintf(dev, dev_size, "tap%d", ppa);
1563 return tap_fd;
1564}
1565
1566static int tap_open(char *ifname, int ifname_size)
1567{
1568 char dev[10]="";
1569 int fd;
1570 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1571 fprintf(stderr, "Cannot allocate TAP device\n");
1572 return -1;
1573 }
1574 pstrcpy(ifname, ifname_size, dev);
1575 fcntl(fd, F_SETFL, O_NONBLOCK);
1576 return fd;
1577}
b29fe3ed 1578#elif defined (_AIX)
1579static int tap_open(char *ifname, int ifname_size)
1580{
1581 fprintf (stderr, "no tap on AIX\n");
1582 return -1;
1583}
63a01ef8
AL		 1584#else
1585static int tap_open(char *ifname, int ifname_size)
1586{
1587 struct ifreq ifr;
1588 int fd, ret;
1589
1590 TFR(fd = open("/dev/net/tun", O_RDWR));
1591 if (fd < 0) {
1592 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1593 return -1;
1594 }
1595 memset(&ifr, 0, sizeof(ifr));
1596 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1597 if (ifname[0] != '\0')
1598 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1599 else
1600 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1601 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1602 if (ret != 0) {
1603 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1604 close(fd);
1605 return -1;
1606 }
1607 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1608 fcntl(fd, F_SETFL, O_NONBLOCK);
1609 return fd;
1610}
1611#endif
1612
1613static int launch_script(const char *setup_script, const char *ifname, int fd)
1614{
7c3370d4 1615 sigset_t oldmask, mask;
63a01ef8
AL		 1616 int pid, status;
1617 char *args[3];
1618 char **parg;
1619
7c3370d4
JK		 1620 sigemptyset(&mask);
1621 sigaddset(&mask, SIGCHLD);
1622 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1623
1624 /* try to launch network script */
1625 pid = fork();
1626 if (pid == 0) {
1627 int open_max = sysconf(_SC_OPEN_MAX), i;
1628
1629 for (i = 0; i < open_max; i++) {
1630 if (i != STDIN_FILENO &&
1631 i != STDOUT_FILENO &&
1632 i != STDERR_FILENO &&
1633 i != fd) {
1634 close(i);
63a01ef8
AL		 1635 }
1636 }
7c3370d4
JK		 1637 parg = args;
1638 *parg++ = (char *)setup_script;
1639 *parg++ = (char *)ifname;
1640 *parg++ = NULL;
1641 execv(setup_script, args);
1642 _exit(1);
1643 } else if (pid > 0) {
1644 while (waitpid(pid, &status, 0) != pid) {
1645 /* loop */
1646 }
1647 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1648
1649 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1650 return 0;
1651 }
1652 }
1653 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1654 return -1;
63a01ef8
AL		 1655}
1656
4a77b25e
MM		 1657static TAPState *net_tap_init(VLANState *vlan, const char *model,
1658 const char *name, const char *ifname1,
1659 const char *setup_script, const char *down_script)
63a01ef8
AL		 1660{
1661 TAPState *s;
1662 int fd;
1663 char ifname[128];
1664
1665 if (ifname1 != NULL)
1666 pstrcpy(ifname, sizeof(ifname), ifname1);
1667 else
1668 ifname[0] = '\0';
1669 TFR(fd = tap_open(ifname, sizeof(ifname)));
1670 if (fd < 0)
4a77b25e 1671 return NULL;
63a01ef8
AL		 1672
1673 if (!setup_script || !strcmp(setup_script, "no"))
1674 setup_script = "";
4a77b25e
MM		 1675 if (setup_script[0] != '\0' &&
1676 launch_script(setup_script, ifname, fd)) {
1677 return NULL;
63a01ef8 1678 }
7a9f6e4a 1679 s = net_tap_fd_init(vlan, model, name, fd);
63a01ef8 1680 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
7cb7434b
AL		 1681 "ifname=%s,script=%s,downscript=%s",
1682 ifname, setup_script, down_script);
973cbd37 1683 if (down_script && strcmp(down_script, "no")) {
63a01ef8 1684 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
973cbd37
AL		 1685 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1686 }
4a77b25e 1687 return s;
63a01ef8
AL		 1688}
1689
1690#endif /* !_WIN32 */
1691
1692#if defined(CONFIG_VDE)
1693typedef struct VDEState {
1694 VLANClientState *vc;
1695 VDECONN *vde;
1696} VDEState;
1697
1698static void vde_to_qemu(void *opaque)
1699{
1700 VDEState *s = opaque;
1701 uint8_t buf[4096];
1702 int size;
1703
cc63bb0f 1704 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
63a01ef8
AL		 1705 if (size > 0) {
1706 qemu_send_packet(s->vc, buf, size);
1707 }
1708}
1709
4f1c942b 1710static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1711{
e3f5ec2b 1712 VDEState *s = vc->opaque;
068daedd 1713 ssize_t ret;
4f1c942b
MM		 1714
1715 do {
1716 ret = vde_send(s->vde, (const char *)buf, size, 0);
1717 } while (ret < 0 && errno == EINTR);
1718
1719 return ret;
63a01ef8
AL		 1720}
1721
b946a153
AL		 1722static void vde_cleanup(VLANClientState *vc)
1723{
1724 VDEState *s = vc->opaque;
1725 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1726 vde_close(s->vde);
1727 qemu_free(s);
1728}
1729
7a9f6e4a
AL		 1730static int net_vde_init(VLANState *vlan, const char *model,
1731 const char *name, const char *sock,
bf38c1a0 1732 int port, const char *group, int mode)
63a01ef8
AL		 1733{
1734 VDEState *s;
1735 char *init_group = strlen(group) ? (char *)group : NULL;
1736 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1737
1738 struct vde_open_args args = {
1739 .port = port,
1740 .group = init_group,
1741 .mode = mode,
1742 };
1743
1744 s = qemu_mallocz(sizeof(VDEState));
cc63bb0f 1745 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
63a01ef8
AL		 1746 if (!s->vde){
1747 free(s);
1748 return -1;
1749 }
e3f5ec2b 1750 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
b946a153 1751 NULL, vde_cleanup, s);
63a01ef8 1752 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
7cb7434b 1753 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
63a01ef8
AL		 1754 sock, vde_datafd(s->vde));
1755 return 0;
1756}
1757#endif
1758
1759/* network connection */
1760typedef struct NetSocketState {
1761 VLANClientState *vc;
1762 int fd;
1763 int state; /* 0 = getting length, 1 = getting data */
abcd2baa
AL		 1764 unsigned int index;
1765 unsigned int packet_len;
63a01ef8
AL		 1766 uint8_t buf[4096];
1767 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1768} NetSocketState;
1769
1770typedef struct NetSocketListenState {
1771 VLANState *vlan;
bf38c1a0 1772 char *model;
7a9f6e4a 1773 char *name;
63a01ef8
AL		 1774 int fd;
1775} NetSocketListenState;
1776
1777/* XXX: we consider we can send the whole packet without blocking */
4f1c942b 1778static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1779{
e3f5ec2b 1780 NetSocketState *s = vc->opaque;
63a01ef8
AL		 1781 uint32_t len;
1782 len = htonl(size);
1783
1784 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
4f1c942b 1785 return send_all(s->fd, buf, size);
63a01ef8
AL		 1786}
1787
4f1c942b 1788static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1789{
e3f5ec2b 1790 NetSocketState *s = vc->opaque;
4f1c942b 1791
70503264 1792 return sendto(s->fd, (const void *)buf, size, 0,
4f1c942b 1793 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
63a01ef8
AL		 1794}
1795
1796static void net_socket_send(void *opaque)
1797{
1798 NetSocketState *s = opaque;
abcd2baa
AL		 1799 int size, err;
1800 unsigned l;
63a01ef8
AL		 1801 uint8_t buf1[4096];
1802 const uint8_t *buf;
1803
c5b76b38 1804 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
63a01ef8
AL		 1805 if (size < 0) {
1806 err = socket_error();
1807 if (err != EWOULDBLOCK)
1808 goto eoc;
1809 } else if (size == 0) {
1810 /* end of connection */
1811 eoc:
1812 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1813 closesocket(s->fd);
1814 return;
1815 }
1816 buf = buf1;
1817 while (size > 0) {
1818 /* reassemble a packet from the network */
1819 switch(s->state) {
1820 case 0:
1821 l = 4 - s->index;
1822 if (l > size)
1823 l = size;
1824 memcpy(s->buf + s->index, buf, l);
1825 buf += l;
1826 size -= l;
1827 s->index += l;
1828 if (s->index == 4) {
1829 /* got length */
1830 s->packet_len = ntohl(*(uint32_t *)s->buf);
1831 s->index = 0;
1832 s->state = 1;
1833 }
1834 break;
1835 case 1:
1836 l = s->packet_len - s->index;
1837 if (l > size)
1838 l = size;
abcd2baa
AL		 1839 if (s->index + l <= sizeof(s->buf)) {
1840 memcpy(s->buf + s->index, buf, l);
1841 } else {
1842 fprintf(stderr, "serious error: oversized packet received,"
1843 "connection terminated.\n");
1844 s->state = 0;
1845 goto eoc;
1846 }
1847
63a01ef8
AL		 1848 s->index += l;
1849 buf += l;
1850 size -= l;
1851 if (s->index >= s->packet_len) {
1852 qemu_send_packet(s->vc, s->buf, s->packet_len);
1853 s->index = 0;
1854 s->state = 0;
1855 }
1856 break;
1857 }
1858 }
1859}
1860
1861static void net_socket_send_dgram(void *opaque)
1862{
1863 NetSocketState *s = opaque;
1864 int size;
1865
c5b76b38 1866 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
63a01ef8
AL		 1867 if (size < 0)
1868 return;
1869 if (size == 0) {
1870 /* end of connection */
1871 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1872 return;
1873 }
1874 qemu_send_packet(s->vc, s->buf, size);
1875}
1876
1877static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1878{
1879 struct ip_mreq imr;
1880 int fd;
1881 int val, ret;
1882 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1883 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1884 inet_ntoa(mcastaddr->sin_addr),
1885 (int)ntohl(mcastaddr->sin_addr.s_addr));
1886 return -1;
1887
1888 }
1889 fd = socket(PF_INET, SOCK_DGRAM, 0);
1890 if (fd < 0) {
1891 perror("socket(PF_INET, SOCK_DGRAM)");
1892 return -1;
1893 }
1894
1895 val = 1;
1896 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1897 (const char *)&val, sizeof(val));
1898 if (ret < 0) {
1899 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1900 goto fail;
1901 }
1902
1903 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1904 if (ret < 0) {
1905 perror("bind");
1906 goto fail;
1907 }
1908
1909 /* Add host to multicast group */
1910 imr.imr_multiaddr = mcastaddr->sin_addr;
1911 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1912
1913 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1914 (const char *)&imr, sizeof(struct ip_mreq));
1915 if (ret < 0) {
1916 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1917 goto fail;
1918 }
1919
1920 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1921 val = 1;
1922 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1923 (const char *)&val, sizeof(val));
1924 if (ret < 0) {
1925 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1926 goto fail;
1927 }
1928
1929 socket_set_nonblock(fd);
1930 return fd;
1931fail:
1932 if (fd >= 0)
1933 closesocket(fd);
1934 return -1;
1935}
1936
b946a153
AL		 1937static void net_socket_cleanup(VLANClientState *vc)
1938{
1939 NetSocketState *s = vc->opaque;
1940 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1941 close(s->fd);
1942 qemu_free(s);
1943}
1944
7a9f6e4a
AL		 1945static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1946 const char *model,
1947 const char *name,
bf38c1a0 1948 int fd, int is_connected)
63a01ef8
AL		 1949{
1950 struct sockaddr_in saddr;
1951 int newfd;
1952 socklen_t saddr_len;
1953 NetSocketState *s;
1954
1955 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1956 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1957 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1958 */
1959
1960 if (is_connected) {
1961 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1962 /* must be bound */
1963 if (saddr.sin_addr.s_addr==0) {
1964 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1965 fd);
1966 return NULL;
1967 }
1968 /* clone dgram socket */
1969 newfd = net_socket_mcast_create(&saddr);
1970 if (newfd < 0) {
1971 /* error already reported by net_socket_mcast_create() */
1972 close(fd);
1973 return NULL;
1974 }
1975 /* clone newfd to fd, close newfd */
1976 dup2(newfd, fd);
1977 close(newfd);
1978
1979 } else {
1980 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1981 fd, strerror(errno));
1982 return NULL;
1983 }
1984 }
1985
1986 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8
AL		 1987 s->fd = fd;
1988
463af534 1989 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
b946a153 1990 NULL, net_socket_cleanup, s);
63a01ef8
AL		 1991 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1992
1993 /* mcast: save bound address as dst */
1994 if (is_connected) s->dgram_dst=saddr;
1995
1996 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1997 "socket: fd=%d (%s mcast=%s:%d)",
1998 fd, is_connected? "cloned" : "",
1999 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2000 return s;
2001}
2002
2003static void net_socket_connect(void *opaque)
2004{
2005 NetSocketState *s = opaque;
2006 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2007}
2008
7a9f6e4a
AL		 2009static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2010 const char *model,
2011 const char *name,
bf38c1a0 2012 int fd, int is_connected)
63a01ef8
AL		 2013{
2014 NetSocketState *s;
2015 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8 2016 s->fd = fd;
463af534 2017 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
b946a153 2018 NULL, net_socket_cleanup, s);
63a01ef8
AL		 2019 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2020 "socket: fd=%d", fd);
2021 if (is_connected) {
2022 net_socket_connect(s);
2023 } else {
2024 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2025 }
2026 return s;
2027}
2028
7a9f6e4a
AL		 2029static NetSocketState *net_socket_fd_init(VLANState *vlan,
2030 const char *model, const char *name,
bf38c1a0 2031 int fd, int is_connected)
63a01ef8 2032{
acedcfbf 2033 int so_type = -1, optlen=sizeof(so_type);
63a01ef8
AL		 2034
2035 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2036 (socklen_t *)&optlen)< 0) {
2037 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2038 return NULL;
2039 }
2040 switch(so_type) {
2041 case SOCK_DGRAM:
7a9f6e4a 2042 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
63a01ef8 2043 case SOCK_STREAM:
7a9f6e4a 2044 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2045 default:
2046 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2047 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
7a9f6e4a 2048 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2049 }
2050 return NULL;
2051}
2052
2053static void net_socket_accept(void *opaque)
2054{
2055 NetSocketListenState *s = opaque;
2056 NetSocketState *s1;
2057 struct sockaddr_in saddr;
2058 socklen_t len;
2059 int fd;
2060
2061 for(;;) {
2062 len = sizeof(saddr);
2063 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2064 if (fd < 0 && errno != EINTR) {
2065 return;
2066 } else if (fd >= 0) {
2067 break;
2068 }
2069 }
7a9f6e4a 2070 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
63a01ef8
AL		 2071 if (!s1) {
2072 closesocket(fd);
2073 } else {
2074 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2075 "socket: connection from %s:%d",
2076 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2077 }
2078}
2079
7a9f6e4a
AL		 2080static int net_socket_listen_init(VLANState *vlan,
2081 const char *model,
2082 const char *name,
bf38c1a0 2083 const char *host_str)
63a01ef8
AL		 2084{
2085 NetSocketListenState *s;
2086 int fd, val, ret;
2087 struct sockaddr_in saddr;
2088
2089 if (parse_host_port(&saddr, host_str) < 0)
2090 return -1;
2091
2092 s = qemu_mallocz(sizeof(NetSocketListenState));
63a01ef8
AL		 2093
2094 fd = socket(PF_INET, SOCK_STREAM, 0);
2095 if (fd < 0) {
2096 perror("socket");
2097 return -1;
2098 }
2099 socket_set_nonblock(fd);
2100
2101 /* allow fast reuse */
2102 val = 1;
2103 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2104
2105 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2106 if (ret < 0) {
2107 perror("bind");
2108 return -1;
2109 }
2110 ret = listen(fd, 0);
2111 if (ret < 0) {
2112 perror("listen");
2113 return -1;
2114 }
2115 s->vlan = vlan;
02374aa0
MM		 2116 s->model = qemu_strdup(model);
2117 s->name = name ? qemu_strdup(name) : NULL;
63a01ef8
AL		 2118 s->fd = fd;
2119 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2120 return 0;
2121}
2122
7a9f6e4a
AL		 2123static int net_socket_connect_init(VLANState *vlan,
2124 const char *model,
2125 const char *name,
bf38c1a0 2126 const char *host_str)
63a01ef8
AL		 2127{
2128 NetSocketState *s;
2129 int fd, connected, ret, err;
2130 struct sockaddr_in saddr;
2131
2132 if (parse_host_port(&saddr, host_str) < 0)
2133 return -1;
2134
2135 fd = socket(PF_INET, SOCK_STREAM, 0);
2136 if (fd < 0) {
2137 perror("socket");
2138 return -1;
2139 }
2140 socket_set_nonblock(fd);
2141
2142 connected = 0;
2143 for(;;) {
2144 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2145 if (ret < 0) {
2146 err = socket_error();
2147 if (err == EINTR || err == EWOULDBLOCK) {
2148 } else if (err == EINPROGRESS) {
2149 break;
2150#ifdef _WIN32
2151 } else if (err == WSAEALREADY) {
2152 break;
2153#endif
2154 } else {
2155 perror("connect");
2156 closesocket(fd);
2157 return -1;
2158 }
2159 } else {
2160 connected = 1;
2161 break;
2162 }
2163 }
7a9f6e4a 2164 s = net_socket_fd_init(vlan, model, name, fd, connected);
63a01ef8
AL		 2165 if (!s)
2166 return -1;
2167 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2168 "socket: connect to %s:%d",
2169 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2170 return 0;
2171}
2172
7a9f6e4a
AL		 2173static int net_socket_mcast_init(VLANState *vlan,
2174 const char *model,
2175 const char *name,
bf38c1a0 2176 const char *host_str)
63a01ef8
AL		 2177{
2178 NetSocketState *s;
2179 int fd;
2180 struct sockaddr_in saddr;
2181
2182 if (parse_host_port(&saddr, host_str) < 0)
2183 return -1;
2184
2185
2186 fd = net_socket_mcast_create(&saddr);
2187 if (fd < 0)
2188 return -1;
2189
7a9f6e4a 2190 s = net_socket_fd_init(vlan, model, name, fd, 0);
63a01ef8
AL		 2191 if (!s)
2192 return -1;
2193
2194 s->dgram_dst = saddr;
2195
2196 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2197 "socket: mcast=%s:%d",
2198 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2199 return 0;
2200
2201}
2202
bb9ea79e
AL		 2203typedef struct DumpState {
2204 VLANClientState *pcap_vc;
2205 int fd;
2206 int pcap_caplen;
2207} DumpState;
2208
2209#define PCAP_MAGIC 0xa1b2c3d4
2210
2211struct pcap_file_hdr {
2212 uint32_t magic;
2213 uint16_t version_major;
2214 uint16_t version_minor;
2215 int32_t thiszone;
2216 uint32_t sigfigs;
2217 uint32_t snaplen;
2218 uint32_t linktype;
2219};
2220
2221struct pcap_sf_pkthdr {
2222 struct {
2223 int32_t tv_sec;
2224 int32_t tv_usec;
2225 } ts;
2226 uint32_t caplen;
2227 uint32_t len;
2228};
2229
4f1c942b 2230static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
bb9ea79e 2231{
e3f5ec2b 2232 DumpState *s = vc->opaque;
bb9ea79e
AL		 2233 struct pcap_sf_pkthdr hdr;
2234 int64_t ts;
2235 int caplen;
2236
2237 /* Early return in case of previous error. */
2238 if (s->fd < 0) {
4f1c942b 2239 return size;
bb9ea79e
AL		 2240 }
2241
6ee093c9 2242 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
bb9ea79e
AL		 2243 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2244
37cb6fc3 2245 hdr.ts.tv_sec = ts / 1000000;
bb9ea79e
AL		 2246 hdr.ts.tv_usec = ts % 1000000;
2247 hdr.caplen = caplen;
2248 hdr.len = size;
2249 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2250 write(s->fd, buf, caplen) != caplen) {
2251 qemu_log("-net dump write error - stop dump\n");
2252 close(s->fd);
2253 s->fd = -1;
2254 }
4f1c942b
MM		 2255
2256 return size;
bb9ea79e
AL		 2257}
2258
2259static void net_dump_cleanup(VLANClientState *vc)
2260{
2261 DumpState *s = vc->opaque;
2262
2263 close(s->fd);
2264 qemu_free(s);
2265}
2266
fb12577c 2267static int net_dump_init(VLANState *vlan, const char *device,
bb9ea79e
AL		 2268 const char *name, const char *filename, int len)
2269{
2270 struct pcap_file_hdr hdr;
2271 DumpState *s;
2272
2273 s = qemu_malloc(sizeof(DumpState));
2274
024431b3 2275 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
bb9ea79e 2276 if (s->fd < 0) {
fb12577c 2277 qemu_error("-net dump: can't open %s\n", filename);
bb9ea79e
AL		 2278 return -1;
2279 }
2280
2281 s->pcap_caplen = len;
2282
2283 hdr.magic = PCAP_MAGIC;
2284 hdr.version_major = 2;
2285 hdr.version_minor = 4;
2286 hdr.thiszone = 0;
2287 hdr.sigfigs = 0;
2288 hdr.snaplen = s->pcap_caplen;
2289 hdr.linktype = 1;
2290
2291 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
fb12577c 2292 qemu_error("-net dump write error: %s\n", strerror(errno));
bb9ea79e
AL		 2293 close(s->fd);
2294 qemu_free(s);
2295 return -1;
2296 }
2297
463af534 2298 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
bb9ea79e
AL		 2299 net_dump_cleanup, s);
2300 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2301 "dump to %s (len=%d)", filename, len);
2302 return 0;
2303}
2304
63a01ef8 2305/* find or alloc a new VLAN */
1a609520 2306VLANState *qemu_find_vlan(int id, int allocate)
63a01ef8
AL		 2307{
2308 VLANState **pvlan, *vlan;
2309 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2310 if (vlan->id == id)
2311 return vlan;
2312 }
1a609520
JK		 2313 if (!allocate) {
2314 return NULL;
2315 }
63a01ef8 2316 vlan = qemu_mallocz(sizeof(VLANState));
63a01ef8 2317 vlan->id = id;
72cf2d4f 2318 QTAILQ_INIT(&vlan->send_queue);
63a01ef8
AL		 2319 vlan->next = NULL;
2320 pvlan = &first_vlan;
2321 while (*pvlan != NULL)
2322 pvlan = &(*pvlan)->next;
2323 *pvlan = vlan;
2324 return vlan;
2325}
2326
7697079b
AL		 2327static int nic_get_free_idx(void)
2328{
2329 int index;
2330
2331 for (index = 0; index < MAX_NICS; index++)
2332 if (!nd_table[index].used)
2333 return index;
2334 return -1;
2335}
2336
07caea31
MA		 2337int qemu_show_nic_models(const char *arg, const char *const *models)
2338{
2339 int i;
2340
2341 if (!arg || strcmp(arg, "?"))
2342 return 0;
2343
2344 fprintf(stderr, "qemu: Supported NIC models: ");
2345 for (i = 0 ; models[i]; i++)
2346 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2347 return 1;
2348}
2349
d07f22c5
AL		 2350void qemu_check_nic_model(NICInfo *nd, const char *model)
2351{
2352 const char *models[2];
2353
2354 models[0] = model;
2355 models[1] = NULL;
2356
07caea31
MA		 2357 if (qemu_show_nic_models(nd->model, models))
2358 exit(0);
2359 if (qemu_find_nic_model(nd, models, model) < 0)
2360 exit(1);
d07f22c5
AL		 2361}
2362
07caea31
MA		 2363int qemu_find_nic_model(NICInfo *nd, const char * const *models,
2364 const char *default_model)
d07f22c5 2365{
07caea31 2366 int i;
d07f22c5
AL		 2367
2368 if (!nd->model)
32a8e14a 2369 nd->model = qemu_strdup(default_model);
d07f22c5 2370
07caea31
MA		 2371 for (i = 0 ; models[i]; i++) {
2372 if (strcmp(nd->model, models[i]) == 0)
2373 return i;
d07f22c5
AL		 2374 }
2375
07caea31
MA		 2376 qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
2377 return -1;
d07f22c5
AL		 2378}
2379
c1d6eed7
MM		 2380static int net_handle_fd_param(Monitor *mon, const char *param)
2381{
2382 if (!qemu_isdigit(param[0])) {
2383 int fd;
2384
2385 fd = monitor_get_fd(mon, param);
2386 if (fd == -1) {
fb12577c 2387 qemu_error("No file descriptor named %s found", param);
c1d6eed7
MM		 2388 return -1;
2389 }
2390
2391 return fd;
2392 } else {
2393 return strtol(param, NULL, 0);
2394 }
2395}
2396
f83c6e10
MM		 2397static int net_init_nic(QemuOpts *opts, Monitor *mon)
2398{
2399 int idx;
2400 NICInfo *nd;
2401
2402 idx = nic_get_free_idx();
2403 if (idx == -1 || nb_nics >= MAX_NICS) {
2404 qemu_error("Too Many NICs\n");
2405 return -1;
2406 }
2407
2408 nd = &nd_table[idx];
2409
2410 memset(nd, 0, sizeof(*nd));
2411
2412 nd->vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
2413
2414 if (qemu_opts_id(opts)) {
2415 nd->id = qemu_strdup(qemu_opts_id(opts));
2416 }
2417 if (qemu_opt_get(opts, "name")) {
2418 nd->name = qemu_strdup(qemu_opt_get(opts, "name"));
2419 }
2420 if (qemu_opt_get(opts, "model")) {
2421 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
2422 }
2423 if (qemu_opt_get(opts, "addr")) {
2424 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
2425 }
2426
2427 nd->macaddr[0] = 0x52;
2428 nd->macaddr[1] = 0x54;
2429 nd->macaddr[2] = 0x00;
2430 nd->macaddr[3] = 0x12;
2431 nd->macaddr[4] = 0x34;
2432 nd->macaddr[5] = 0x56 + idx;
2433
2434 if (qemu_opt_get(opts, "macaddr") &&
2435 parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
2436 qemu_error("invalid syntax for ethernet address\n");
2437 return -1;
2438 }
2439
2440 nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
2441 if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
2442 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
2443 qemu_error("invalid # of vectors: %d\n", nd->nvectors);
2444 return -1;
2445 }
2446
2447 nd->used = 1;
2448 nd->vlan->nb_guest_devs++;
2449 nb_nics++;
2450
2451 return idx;
2452}
2453
ec302ffd
MM		 2454static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
2455{
2456 struct slirp_config_str *config;
2457
2458 if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
2459 return 0;
2460 }
2461
2462 config = qemu_mallocz(sizeof(*config));
2463
2464 pstrcpy(config->str, sizeof(config->str), value);
2465
2466 if (!strcmp(name, "hostfwd")) {
2467 config->flags = SLIRP_CFG_HOSTFWD;
2468 }
2469
2470 config->next = slirp_configs;
2471 slirp_configs = config;
2472
2473 return 0;
2474}
2475
2476static int net_init_slirp(QemuOpts *opts, Monitor *mon)
2477{
2478 VLANState *vlan;
2479 struct slirp_config_str *config;
2480 const char *name;
2481 const char *vhost;
2482 const char *vhostname;
2483 const char *vdhcp_start;
2484 const char *vnamesrv;
2485 const char *tftp_export;
2486 const char *bootfile;
2487 const char *smb_export;
2488 const char *vsmbsrv;
2489 char *vnet = NULL;
2490 int restricted = 0;
2491 int ret;
2492
2493 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
2494
2495 name = qemu_opt_get(opts, "name");
2496
2497 vhost = qemu_opt_get(opts, "host");
2498 vhostname = qemu_opt_get(opts, "hostname");
2499 vdhcp_start = qemu_opt_get(opts, "dhcpstart");
2500 vnamesrv = qemu_opt_get(opts, "dns");
2501 tftp_export = qemu_opt_get(opts, "tftp");
2502 bootfile = qemu_opt_get(opts, "bootfile");
2503 smb_export = qemu_opt_get(opts, "smb");
2504 vsmbsrv = qemu_opt_get(opts, "smbserver");
2505
2506 if (qemu_opt_get(opts, "ip")) {
2507 const char *ip = qemu_opt_get(opts, "ip");
2508 int l = strlen(ip) + strlen("/24") + 1;
2509
2510 vnet = qemu_malloc(l);
2511
2512 /* emulate legacy ip= parameter */
2513 pstrcpy(vnet, l, ip);
2514 pstrcat(vnet, l, "/24");
2515 }
2516
2517 if (qemu_opt_get(opts, "net")) {
2518 if (vnet) {
2519 qemu_free(vnet);
2520 }
2521 vnet = qemu_strdup(qemu_opt_get(opts, "net"));
2522 }
2523
2524 if (qemu_opt_get(opts, "restrict") &&
2525 qemu_opt_get(opts, "restrict")[0] == 'y') {
2526 restricted = 1;
2527 }
2528
2529 qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
2530
2531 ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
2532 vhostname, tftp_export, bootfile, vdhcp_start,
2533 vnamesrv, smb_export, vsmbsrv);
2534
2535 while (slirp_configs) {
2536 config = slirp_configs;
2537 slirp_configs = config->next;
2538 qemu_free(config);
2539 }
2540
2541 if (ret != -1) {
2542 vlan->nb_host_devs++;
2543 }
2544
2545 qemu_free(vnet);
2546
2547 return ret;
2548}
2549
8a1c5235
MM		 2550#ifdef _WIN32
2551static int net_init_tap_win32(QemuOpts *opts, Monitor *mon)
2552{
2553 VLANState *vlan;
2554 const char *name;
2555 const char *ifname;
2556
2557 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
2558
2559 name = qemu_opt_get(opts, "name");
2560 ifname = qemu_opt_get(opts, "ifname");
2561
2562 if (!ifname) {
2563 qemu_error("tap: no interface name\n");
2564 return -1;
2565 }
2566
2567 if (tap_win32_init(vlan, "tap", name, ifname) == -1) {
2568 return -1;
2569 }
2570
2571 vlan->nb_host_devs++;
2572
2573 return 0;
2574}
2575#elif !defined(_AIX)
2576static int net_init_tap(QemuOpts *opts, Monitor *mon)
2577{
2578 VLANState *vlan;
2579 const char *name;
2580 TAPState *s;
2581
2582 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
2583
2584 name = qemu_opt_get(opts, "name");
2585
2586 if (qemu_opt_get(opts, "fd")) {
2587 int fd;
2588
2589 if (qemu_opt_get(opts, "ifname") ||
2590 qemu_opt_get(opts, "script") ||
2591 qemu_opt_get(opts, "downscript")) {
2592 qemu_error("ifname=, script= and downscript= is invalid with fd=\n");
2593 return -1;
2594 }
2595
2596 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2597 if (fd == -1) {
2598 return -1;
2599 }
2600
2601 fcntl(fd, F_SETFL, O_NONBLOCK);
2602
2603 s = net_tap_fd_init(vlan, "tap", name, fd);
2604 if (!s) {
2605 close(fd);
2606 }
2607 } else {
2608 const char *ifname, *script, *downscript;
2609
2610 ifname = qemu_opt_get(opts, "ifname");
2611 script = qemu_opt_get(opts, "script");
2612 downscript = qemu_opt_get(opts, "downscript");
2613
2614 if (!script) {
2615 script = DEFAULT_NETWORK_SCRIPT;
2616 }
2617 if (!downscript) {
2618 downscript = DEFAULT_NETWORK_DOWN_SCRIPT;
2619 }
2620
2621 s = net_tap_init(vlan, "tap", name, ifname, script, downscript);
2622 }
2623
2624 if (!s) {
2625 return -1;
2626 }
2627
2628 if (tap_set_sndbuf(s, opts) < 0) {
2629 return -1;
2630 }
2631
2632 vlan->nb_host_devs++;
2633
2634 return 0;
2635}
2636#endif
2637
88ce16ca
MM		 2638static int net_init_socket(QemuOpts *opts, Monitor *mon)
2639{
2640 VLANState *vlan;
2641 const char *name;
2642
2643 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
2644
2645 name = qemu_opt_get(opts, "name");
2646
2647 if (qemu_opt_get(opts, "fd")) {
2648 int fd;
2649
2650 if (qemu_opt_get(opts, "listen") ||
2651 qemu_opt_get(opts, "connect") ||
2652 qemu_opt_get(opts, "mcast")) {
2653 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2654 return -1;
2655 }
2656
2657 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2658 if (fd == -1) {
2659 return -1;
2660 }
2661
2662 if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) {
2663 close(fd);
2664 return -1;
2665 }
2666 } else if (qemu_opt_get(opts, "listen")) {
2667 const char *listen;
2668
2669 if (qemu_opt_get(opts, "fd") ||
2670 qemu_opt_get(opts, "connect") ||
2671 qemu_opt_get(opts, "mcast")) {
2672 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2673 return -1;
2674 }
2675
2676 listen = qemu_opt_get(opts, "listen");
2677
2678 if (net_socket_listen_init(vlan, "socket", name, listen) == -1) {
2679 return -1;
2680 }
2681 } else if (qemu_opt_get(opts, "connect")) {
2682 const char *connect;
2683
2684 if (qemu_opt_get(opts, "fd") ||
2685 qemu_opt_get(opts, "listen") ||
2686 qemu_opt_get(opts, "mcast")) {
2687 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2688 return -1;
2689 }
2690
2691 connect = qemu_opt_get(opts, "connect");
2692
2693 if (net_socket_connect_init(vlan, "socket", name, connect) == -1) {
2694 return -1;
2695 }
2696 } else if (qemu_opt_get(opts, "mcast")) {
2697 const char *mcast;
2698
2699 if (qemu_opt_get(opts, "fd") ||
2700 qemu_opt_get(opts, "connect") ||
2701 qemu_opt_get(opts, "listen")) {
2702 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
2703 return -1;
2704 }
2705
2706 mcast = qemu_opt_get(opts, "mcast");
2707
2708 if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) {
2709 return -1;
2710 }
2711 } else {
2712 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
2713 return -1;
2714 }
2715
2716 vlan->nb_host_devs++;
2717
2718 return 0;
2719}
2720
f83c6e10
MM		 2721#define NET_COMMON_PARAMS_DESC \
2722 { \
2723 .name = "type", \
2724 .type = QEMU_OPT_STRING, \
2725 .help = "net client type (nic, tap etc.)", \
2726 }, { \
2727 .name = "vlan", \
2728 .type = QEMU_OPT_NUMBER, \
2729 .help = "vlan number", \
2730 }, { \
2731 .name = "name", \
2732 .type = QEMU_OPT_STRING, \
2733 .help = "identifier for monitor commands", \
2734 }
2735
2736typedef int (*net_client_init_func)(QemuOpts *opts, Monitor *mon);
2737
2738/* magic number, but compiler will warn if too small */
2739#define NET_MAX_DESC 20
2740
2741static struct {
2742 const char *type;
2743 net_client_init_func init;
2744 QemuOptDesc desc[NET_MAX_DESC];
2745} net_client_types[] = {
2746 {
2747 .type = "none",
2748 .desc = {
2749 NET_COMMON_PARAMS_DESC,
2750 { /* end of list */ }
2751 },
2752 }, {
2753 .type = "nic",
2754 .init = net_init_nic,
2755 .desc = {
2756 NET_COMMON_PARAMS_DESC,
2757 {
2758 .name = "macaddr",
2759 .type = QEMU_OPT_STRING,
2760 .help = "MAC address",
2761 }, {
2762 .name = "model",
2763 .type = QEMU_OPT_STRING,
2764 .help = "device model (e1000, rtl8139, virtio etc.)",
2765 }, {
2766 .name = "addr",
2767 .type = QEMU_OPT_STRING,
2768 .help = "PCI device address",
2769 }, {
2770 .name = "vectors",
2771 .type = QEMU_OPT_NUMBER,
2772 .help = "number of MSI-x vectors, 0 to disable MSI-X",
2773 },
2774 { /* end of list */ }
2775 },
ec302ffd
MM		 2776#ifdef CONFIG_SLIRP
2777 }, {
2778 .type = "user",
2779 .init = net_init_slirp,
2780 .desc = {
2781 NET_COMMON_PARAMS_DESC,
2782 {
2783 .name = "hostname",
2784 .type = QEMU_OPT_STRING,
2785 .help = "client hostname reported by the builtin DHCP server",
2786 }, {
2787 .name = "restrict",
2788 .type = QEMU_OPT_STRING,
2789 .help = "isolate the guest from the host (y|yes|n|no)",
2790 }, {
2791 .name = "ip",
2792 .type = QEMU_OPT_STRING,
2793 .help = "legacy parameter, use net= instead",
2794 }, {
2795 .name = "net",
2796 .type = QEMU_OPT_STRING,
2797 .help = "IP address and optional netmask",
2798 }, {
2799 .name = "host",
2800 .type = QEMU_OPT_STRING,
2801 .help = "guest-visible address of the host",
2802 }, {
2803 .name = "tftp",
2804 .type = QEMU_OPT_STRING,
2805 .help = "root directory of the built-in TFTP server",
2806 }, {
2807 .name = "bootfile",
2808 .type = QEMU_OPT_STRING,
2809 .help = "BOOTP filename, for use with tftp=",
2810 }, {
2811 .name = "dhcpstart",
2812 .type = QEMU_OPT_STRING,
2813 .help = "the first of the 16 IPs the built-in DHCP server can assign",
2814 }, {
2815 .name = "dns",
2816 .type = QEMU_OPT_STRING,
2817 .help = "guest-visible address of the virtual nameserver",
2818 }, {
2819 .name = "smb",
2820 .type = QEMU_OPT_STRING,
2821 .help = "root directory of the built-in SMB server",
2822 }, {
2823 .name = "smbserver",
2824 .type = QEMU_OPT_STRING,
2825 .help = "IP address of the built-in SMB server",
2826 }, {
2827 .name = "hostfwd",
2828 .type = QEMU_OPT_STRING,
2829 .help = "guest port number to forward incoming TCP or UDP connections",
2830 }, {
2831 .name = "guestfwd",
2832 .type = QEMU_OPT_STRING,
2833 .help = "IP address and port to forward guest TCP connections",
2834 },
2835 { /* end of list */ }
2836 },
8a1c5235
MM		 2837#endif
2838#ifdef _WIN32
2839 }, {
2840 .type = "tap",
2841 .init = net_init_tap_win32,
2842 .desc = {
2843 NET_COMMON_PARAMS_DESC,
2844 {
2845 .name = "ifname",
2846 .type = QEMU_OPT_STRING,
2847 .help = "interface name",
2848 },
2849 { /* end of list */ }
2850 },
2851#elif !defined(_AIX)
2852 }, {
2853 .type = "tap",
2854 .init = net_init_tap,
2855 .desc = {
2856 NET_COMMON_PARAMS_DESC,
2857 {
2858 .name = "fd",
2859 .type = QEMU_OPT_STRING,
2860 .help = "file descriptor of an already opened tap",
2861 }, {
2862 .name = "ifname",
2863 .type = QEMU_OPT_STRING,
2864 .help = "interface name",
2865 }, {
2866 .name = "script",
2867 .type = QEMU_OPT_STRING,
2868 .help = "script to initialize the interface",
2869 }, {
2870 .name = "downscript",
2871 .type = QEMU_OPT_STRING,
2872 .help = "script to shut down the interface",
2873#ifdef TUNSETSNDBUF
2874 }, {
2875 .name = "sndbuf",
2876 .type = QEMU_OPT_SIZE,
2877 .help = "send buffer limit"
2878#endif
2879 },
2880 { /* end of list */ }
2881 },
ec302ffd 2882#endif
88ce16ca
MM		 2883 }, {
2884 .type = "socket",
2885 .init = net_init_socket,
2886 .desc = {
2887 NET_COMMON_PARAMS_DESC,
2888 {
2889 .name = "fd",
2890 .type = QEMU_OPT_STRING,
2891 .help = "file descriptor of an already opened socket",
2892 }, {
2893 .name = "listen",
2894 .type = QEMU_OPT_STRING,
2895 .help = "port number, and optional hostname, to listen on",
2896 }, {
2897 .name = "connect",
2898 .type = QEMU_OPT_STRING,
2899 .help = "port number, and optional hostname, to connect to",
2900 }, {
2901 .name = "mcast",
2902 .type = QEMU_OPT_STRING,
2903 .help = "UDP multicast address and port number",
2904 },
2905 { /* end of list */ }
2906 },
f83c6e10
MM		 2907 },
2908 { /* end of list */ }
2909};
2910
2911static int net_client_init_from_opts(Monitor *mon, QemuOpts *opts)
2912{
2913 const char *type;
2914 int i;
2915
2916 type = qemu_opt_get(opts, "type");
2917 if (!type) {
2918 qemu_error("No type specified for -net\n");
2919 return -1;
2920 }
2921
2922 for (i = 0; net_client_types[i].type != NULL; i++) {
2923 if (!strcmp(net_client_types[i].type, type)) {
2924 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
2925 return -1;
2926 }
2927
2928 if (net_client_types[i].init) {
2929 return net_client_types[i].init(opts, NULL);
2930 } else {
2931 return 0;
2932 }
2933 }
2934 }
2935
2936 qemu_error("Invalid -net type '%s'\n", type);
2937 return -1;
2938}
2939
10ae5a7a 2940int net_client_init(Monitor *mon, const char *device, const char *p)
63a01ef8
AL		 2941{
2942 char buf[1024];
2943 int vlan_id, ret;
2944 VLANState *vlan;
7a9f6e4a 2945 char *name = NULL;
63a01ef8 2946
f83c6e10 2947 if (!strcmp(device, "none") ||
ec302ffd 2948 !strcmp(device, "nic") ||
8a1c5235 2949 !strcmp(device, "user") ||
88ce16ca
MM		 2950 !strcmp(device, "tap") ||
2951 !strcmp(device, "socket")) {
f83c6e10
MM		 2952 QemuOpts *opts;
2953
2954 opts = qemu_opts_parse(&qemu_net_opts, p, NULL);
2955 if (!opts) {
2956 return -1;
2957 }
2958
2959 qemu_opt_set(opts, "type", device);
2960
2961 return net_client_init_from_opts(mon, opts);
2962 }
2963
63a01ef8
AL		 2964 vlan_id = 0;
2965 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2966 vlan_id = strtol(buf, NULL, 0);
2967 }
1a609520 2968 vlan = qemu_find_vlan(vlan_id, 1);
9036de1a 2969
7a9f6e4a 2970 if (get_param_value(buf, sizeof(buf), "name", p)) {
10ae5a7a 2971 name = qemu_strdup(buf);
7a9f6e4a 2972 }
f83c6e10 2973
63a01ef8 2974#ifdef CONFIG_SLIRP
ec302ffd 2975 if (!strcmp(device, "channel")) {
72cf2d4f 2976 if (QTAILQ_EMPTY(&slirp_stacks)) {
ad196a9d
JK		 2977 struct slirp_config_str *config;
2978
2979 config = qemu_malloc(sizeof(*config));
2980 pstrcpy(config->str, sizeof(config->str), p);
c92ef6a2 2981 config->flags = SLIRP_CFG_LEGACY;
ad196a9d
JK		 2982 config->next = slirp_configs;
2983 slirp_configs = config;
0752706d 2984 ret = 0;
ad196a9d 2985 } else {
fb12577c 2986 ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), p, 1);
8ca9217d 2987 }
63a01ef8 2988 } else
63a01ef8 2989#endif
63a01ef8
AL		 2990#ifdef CONFIG_VDE
2991 if (!strcmp(device, "vde")) {
8e4416af
AL		 2992 static const char * const vde_params[] = {
2993 "vlan", "name", "sock", "port", "group", "mode", NULL
2994 };
63a01ef8
AL		 2995 char vde_sock[1024], vde_group[512];
2996 int vde_port, vde_mode;
8e4416af 2997
0aa7a205 2998 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
fb12577c 2999 qemu_error("invalid parameter '%s' in '%s'\n", buf, p);
10ae5a7a
JK		 3000 ret = -1;
3001 goto out;
8e4416af 3002 }
63a01ef8
AL		 3003 vlan->nb_host_devs++;
3004 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
3005 vde_sock[0] = '\0';
3006 }
3007 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
3008 vde_port = strtol(buf, NULL, 10);
3009 } else {
3010 vde_port = 0;
3011 }
3012 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
3013 vde_group[0] = '\0';
3014 }
3015 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
3016 vde_mode = strtol(buf, NULL, 8);
3017 } else {
3018 vde_mode = 0700;
3019 }
7a9f6e4a 3020 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
63a01ef8
AL		 3021 } else
3022#endif
bb9ea79e
AL		 3023 if (!strcmp(device, "dump")) {
3024 int len = 65536;
3025
3026 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
3027 len = strtol(buf, NULL, 0);
3028 }
3029 if (!get_param_value(buf, sizeof(buf), "file", p)) {
3030 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
3031 }
fb12577c 3032 ret = net_dump_init(vlan, device, name, buf, len);
bb9ea79e 3033 } else {
fb12577c 3034 qemu_error("Unknown network device: %s\n", device);
771f1339
AL		 3035 ret = -1;
3036 goto out;
63a01ef8
AL		 3037 }
3038 if (ret < 0) {
fb12577c 3039 qemu_error("Could not initialize device '%s'\n", device);
63a01ef8 3040 }
771f1339 3041out:
10ae5a7a 3042 qemu_free(name);
63a01ef8
AL		 3043 return ret;
3044}
3045
8b13c4a7
AL		 3046void net_client_uninit(NICInfo *nd)
3047{
3048 nd->vlan->nb_guest_devs--;
3049 nb_nics--;
a9796703 3050
9203f520
MM		 3051 qemu_free(nd->model);
3052 qemu_free(nd->name);
3053 qemu_free(nd->devaddr);
3054 qemu_free(nd->id);
a9796703 3055
d2cffe30 3056 nd->used = 0;
8b13c4a7
AL		 3057}
3058
6f338c34
AL		 3059static int net_host_check_device(const char *device)
3060{
3061 int i;
bb9ea79e 3062 const char *valid_param_list[] = { "tap", "socket", "dump"
6f338c34
AL		 3063#ifdef CONFIG_SLIRP
3064 ,"user"
3065#endif
3066#ifdef CONFIG_VDE
3067 ,"vde"
3068#endif
3069 };
3070 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
3071 if (!strncmp(valid_param_list[i], device,
3072 strlen(valid_param_list[i])))
3073 return 1;
3074 }
3075
3076 return 0;
3077}
3078
f18c16de 3079void net_host_device_add(Monitor *mon, const QDict *qdict)
6f338c34 3080{
f18c16de
LC		 3081 const char *device = qdict_get_str(qdict, "device");
3082 const char *opts = qdict_get_try_str(qdict, "opts");
3083
6f338c34 3084 if (!net_host_check_device(device)) {
376253ec 3085 monitor_printf(mon, "invalid host network device %s\n", device);
6f338c34
AL		 3086 return;
3087 }
10ae5a7a 3088 if (net_client_init(mon, device, opts ? opts : "") < 0) {
5c8be678
AL		 3089 monitor_printf(mon, "adding host network device %s failed\n", device);
3090 }
6f338c34
AL		 3091}
3092
f18c16de 3093void net_host_device_remove(Monitor *mon, const QDict *qdict)
6f338c34 3094{
6f338c34 3095 VLANClientState *vc;
f18c16de
LC		 3096 int vlan_id = qdict_get_int(qdict, "vlan_id");
3097 const char *device = qdict_get_str(qdict, "device");
6f338c34 3098
1a609520 3099 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
6f338c34 3100 if (!vc) {
6f338c34
AL		 3101 return;
3102 }
e8f1f9db
AL		 3103 if (!net_host_check_device(vc->model)) {
3104 monitor_printf(mon, "invalid host network device %s\n", device);
3105 return;
3106 }
6f338c34
AL		 3107 qemu_del_vlan_client(vc);
3108}
3109
63a01ef8
AL		 3110int net_client_parse(const char *str)
3111{
3112 const char *p;
3113 char *q;
3114 char device[64];
3115
3116 p = str;
3117 q = device;
3118 while (*p != '\0' && *p != ',') {
3119 if ((q - device) < sizeof(device) - 1)
3120 *q++ = *p;
3121 p++;
3122 }
3123 *q = '\0';
3124 if (*p == ',')
3125 p++;
3126
10ae5a7a 3127 return net_client_init(NULL, device, p);
63a01ef8
AL		 3128}
3129
406c8df3
GC		 3130void net_set_boot_mask(int net_boot_mask)
3131{
3132 int i;
3133
3134 /* Only the first four NICs may be bootable */
3135 net_boot_mask = net_boot_mask & 0xF;
3136
3137 for (i = 0; i < nb_nics; i++) {
3138 if (net_boot_mask & (1 << i)) {
3139 nd_table[i].bootable = 1;
3140 net_boot_mask &= ~(1 << i);
3141 }
3142 }
3143
3144 if (net_boot_mask) {
3145 fprintf(stderr, "Cannot boot from non-existent NIC\n");
3146 exit(1);
3147 }
3148}
3149
376253ec 3150void do_info_network(Monitor *mon)
63a01ef8
AL		 3151{
3152 VLANState *vlan;
3153 VLANClientState *vc;
3154
3155 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
376253ec 3156 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
63a01ef8 3157 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
376253ec 3158 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
63a01ef8
AL		 3159 }
3160}
3161
f18c16de 3162void do_set_link(Monitor *mon, const QDict *qdict)
436e5e53
AL		 3163{
3164 VLANState *vlan;
3165 VLANClientState *vc = NULL;
f18c16de
LC		 3166 const char *name = qdict_get_str(qdict, "name");
3167 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
436e5e53
AL		 3168
3169 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
3170 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
3171 if (strcmp(vc->name, name) == 0)
dd5de373
EI		 3172 goto done;
3173done:
436e5e53
AL		 3174
3175 if (!vc) {
7dc3fa09 3176 monitor_printf(mon, "could not find network device '%s'\n", name);
c3cf0d3f 3177 return;
436e5e53
AL		 3178 }
3179
3180 if (strcmp(up_or_down, "up") == 0)
3181 vc->link_down = 0;
3182 else if (strcmp(up_or_down, "down") == 0)
3183 vc->link_down = 1;
3184 else
376253ec
AL		 3185 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
3186 "valid\n", up_or_down);
436e5e53 3187
34b25ca7
AL		 3188 if (vc->link_status_changed)
3189 vc->link_status_changed(vc);
436e5e53
AL		 3190}
3191
63a01ef8
AL		 3192void net_cleanup(void)
3193{
3194 VLANState *vlan;
3195
63a01ef8
AL		 3196 /* close network clients */
3197 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
b946a153 3198 VLANClientState *vc = vlan->first_client;
63a01ef8 3199
b946a153
AL		 3200 while (vc) {
3201 VLANClientState *next = vc->next;
63a01ef8 3202
b946a153
AL		 3203 qemu_del_vlan_client(vc);
3204
3205 vc = next;
63a01ef8
AL		 3206 }
3207 }
63a01ef8
AL		 3208}
3209
3210void net_client_check(void)
3211{
3212 VLANState *vlan;
3213
3214 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
3215 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
3216 continue;
3217 if (vlan->nb_guest_devs == 0)
3218 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
3219 if (vlan->nb_host_devs == 0)
3220 fprintf(stderr,
3221 "Warning: vlan %d is not connected to host network\n",
3222 vlan->id);
3223 }
3224}
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