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slirp: Allocate/free stack instance dynamically
[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
179a2c19 32/* Needed early for HOST_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>
179a2c19 55#ifdef HOST_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
104#ifdef _WIN32
49dc768d 105#include <windows.h>
63a01ef8
AL		 106#include <malloc.h>
107#include <sys/timeb.h>
108#include <mmsystem.h>
109#define getopt_long_only getopt_long
110#define memalign(align, size) malloc(size)
111#endif
112
511d2b14
BS		 113#include "qemu-common.h"
114#include "net.h"
115#include "monitor.h"
116#include "sysemu.h"
117#include "qemu-timer.h"
118#include "qemu-char.h"
119#include "audio/audio.h"
120#include "qemu_socket.h"
bb9ea79e 121#include "qemu-log.h"
511d2b14 122
d918f23e 123#include "slirp/libslirp.h"
511d2b14
BS		 124
125
63a01ef8
AL		 126static VLANState *first_vlan;
127
128/***********************************************************/
129/* network device redirectors */
130
131#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
132static void hex_dump(FILE *f, const uint8_t *buf, int size)
133{
134 int len, i, j, c;
135
136 for(i=0;i<size;i+=16) {
137 len = size - i;
138 if (len > 16)
139 len = 16;
140 fprintf(f, "%08x ", i);
141 for(j=0;j<16;j++) {
142 if (j < len)
143 fprintf(f, " %02x", buf[i+j]);
144 else
145 fprintf(f, " ");
146 }
147 fprintf(f, " ");
148 for(j=0;j<len;j++) {
149 c = buf[i+j];
150 if (c < ' ' || c > '~')
151 c = '.';
152 fprintf(f, "%c", c);
153 }
154 fprintf(f, "\n");
155 }
156}
157#endif
158
159static int parse_macaddr(uint8_t *macaddr, const char *p)
160{
161 int i;
162 char *last_char;
163 long int offset;
164
165 errno = 0;
166 offset = strtol(p, &last_char, 0);
167 if (0 == errno && '\0' == *last_char &&
168 offset >= 0 && offset <= 0xFFFFFF) {
169 macaddr[3] = (offset & 0xFF0000) >> 16;
170 macaddr[4] = (offset & 0xFF00) >> 8;
171 macaddr[5] = offset & 0xFF;
172 return 0;
173 } else {
174 for(i = 0; i < 6; i++) {
175 macaddr[i] = strtol(p, (char **)&p, 16);
176 if (i == 5) {
177 if (*p != '\0')
178 return -1;
179 } else {
180 if (*p != ':' && *p != '-')
181 return -1;
182 p++;
183 }
184 }
185 return 0;
186 }
187
188 return -1;
189}
190
191static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
192{
193 const char *p, *p1;
194 int len;
195 p = *pp;
196 p1 = strchr(p, sep);
197 if (!p1)
198 return -1;
199 len = p1 - p;
200 p1++;
201 if (buf_size > 0) {
202 if (len > buf_size - 1)
203 len = buf_size - 1;
204 memcpy(buf, p, len);
205 buf[len] = '\0';
206 }
207 *pp = p1;
208 return 0;
209}
210
211int parse_host_src_port(struct sockaddr_in *haddr,
212 struct sockaddr_in *saddr,
213 const char *input_str)
214{
215 char *str = strdup(input_str);
216 char *host_str = str;
217 char *src_str;
218 const char *src_str2;
219 char *ptr;
220
221 /*
222 * Chop off any extra arguments at the end of the string which
223 * would start with a comma, then fill in the src port information
224 * if it was provided else use the "any address" and "any port".
225 */
226 if ((ptr = strchr(str,',')))
227 *ptr = '\0';
228
229 if ((src_str = strchr(input_str,'@'))) {
230 *src_str = '\0';
231 src_str++;
232 }
233
234 if (parse_host_port(haddr, host_str) < 0)
235 goto fail;
236
237 src_str2 = src_str;
238 if (!src_str || *src_str == '\0')
239 src_str2 = ":0";
240
241 if (parse_host_port(saddr, src_str2) < 0)
242 goto fail;
243
244 free(str);
245 return(0);
246
247fail:
248 free(str);
249 return -1;
250}
251
252int parse_host_port(struct sockaddr_in *saddr, const char *str)
253{
254 char buf[512];
255 struct hostent *he;
256 const char *p, *r;
257 int port;
258
259 p = str;
260 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
261 return -1;
262 saddr->sin_family = AF_INET;
263 if (buf[0] == '\0') {
264 saddr->sin_addr.s_addr = 0;
265 } else {
cd390083 266 if (qemu_isdigit(buf[0])) {
63a01ef8
AL		 267 if (!inet_aton(buf, &saddr->sin_addr))
268 return -1;
269 } else {
270 if ((he = gethostbyname(buf)) == NULL)
271 return - 1;
272 saddr->sin_addr = *(struct in_addr *)he->h_addr;
273 }
274 }
275 port = strtol(p, (char **)&r, 0);
276 if (r == p)
277 return -1;
278 saddr->sin_port = htons(port);
279 return 0;
280}
281
69d6451c
BS		 282#if !defined(_WIN32) && 0
283static int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
63a01ef8
AL		 284{
285 const char *p;
286 int len;
287
288 len = MIN(108, strlen(str));
289 p = strchr(str, ',');
290 if (p)
291 len = MIN(len, p - str);
292
293 memset(uaddr, 0, sizeof(*uaddr));
294
295 uaddr->sun_family = AF_UNIX;
296 memcpy(uaddr->sun_path, str, len);
297
298 return 0;
299}
300#endif
301
7cb7434b
AL		 302void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
303{
304 snprintf(vc->info_str, sizeof(vc->info_str),
4dda4063
AL		 305 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
306 vc->model,
7cb7434b
AL		 307 macaddr[0], macaddr[1], macaddr[2],
308 macaddr[3], macaddr[4], macaddr[5]);
309}
310
676cff29
AL		 311static char *assign_name(VLANClientState *vc1, const char *model)
312{
313 VLANState *vlan;
314 char buf[256];
315 int id = 0;
316
317 for (vlan = first_vlan; vlan; vlan = vlan->next) {
318 VLANClientState *vc;
319
320 for (vc = vlan->first_client; vc; vc = vc->next)
321 if (vc != vc1 && strcmp(vc->model, model) == 0)
322 id++;
323 }
324
325 snprintf(buf, sizeof(buf), "%s.%d", model, id);
326
327 return strdup(buf);
328}
329
63a01ef8 330VLANClientState *qemu_new_vlan_client(VLANState *vlan,
bf38c1a0 331 const char *model,
7a9f6e4a 332 const char *name,
cda9046b
MM		 333 NetCanReceive *can_receive,
334 NetReceive *receive,
335 NetReceiveIOV *receive_iov,
b946a153 336 NetCleanup *cleanup,
63a01ef8
AL		 337 void *opaque)
338{
339 VLANClientState *vc, **pvc;
340 vc = qemu_mallocz(sizeof(VLANClientState));
bf38c1a0 341 vc->model = strdup(model);
7a9f6e4a
AL		 342 if (name)
343 vc->name = strdup(name);
344 else
345 vc->name = assign_name(vc, model);
cda9046b
MM		 346 vc->can_receive = can_receive;
347 vc->receive = receive;
348 vc->receive_iov = receive_iov;
b946a153 349 vc->cleanup = cleanup;
63a01ef8
AL		 350 vc->opaque = opaque;
351 vc->vlan = vlan;
352
353 vc->next = NULL;
354 pvc = &vlan->first_client;
355 while (*pvc != NULL)
356 pvc = &(*pvc)->next;
357 *pvc = vc;
358 return vc;
359}
360
361void qemu_del_vlan_client(VLANClientState *vc)
362{
363 VLANClientState **pvc = &vc->vlan->first_client;
364
365 while (*pvc != NULL)
366 if (*pvc == vc) {
367 *pvc = vc->next;
b946a153
AL		 368 if (vc->cleanup) {
369 vc->cleanup(vc);
370 }
676cff29 371 free(vc->name);
bf38c1a0 372 free(vc->model);
dad35419 373 qemu_free(vc);
63a01ef8
AL		 374 break;
375 } else
376 pvc = &(*pvc)->next;
377}
378
8b13c4a7
AL		 379VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
380{
381 VLANClientState **pvc = &vlan->first_client;
382
383 while (*pvc != NULL)
384 if ((*pvc)->opaque == opaque)
385 return *pvc;
386 else
387 pvc = &(*pvc)->next;
388
389 return NULL;
390}
391
2e1e0641 392int qemu_can_send_packet(VLANClientState *sender)
63a01ef8 393{
2e1e0641 394 VLANState *vlan = sender->vlan;
63a01ef8
AL		 395 VLANClientState *vc;
396
2e1e0641
MM		 397 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
398 if (vc == sender) {
399 continue;
400 }
401
cda9046b 402 /* no can_receive() handler, they can always receive */
e3f5ec2b 403 if (!vc->can_receive || vc->can_receive(vc)) {
2e1e0641 404 return 1;
63a01ef8
AL		 405 }
406 }
407 return 0;
408}
409
3e021d40 410static int
764a4d1d 411qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
63a01ef8 412{
63a01ef8 413 VLANClientState *vc;
3e021d40 414 int ret = -1;
63a01ef8 415
e94667b9
MM		 416 sender->vlan->delivering = 1;
417
764a4d1d 418 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
3e021d40
MM		 419 ssize_t len;
420
421 if (vc == sender) {
422 continue;
764a4d1d 423 }
3e021d40
MM		 424
425 if (vc->link_down) {
426 ret = size;
427 continue;
428 }
429
430 len = vc->receive(vc, buf, size);
431
432 ret = (ret >= 0) ? ret : len;
764a4d1d 433 }
3e021d40 434
e94667b9
MM		 435 sender->vlan->delivering = 0;
436
3e021d40 437 return ret;
764a4d1d
AL		 438}
439
8cad5516
MM		 440void qemu_purge_queued_packets(VLANClientState *vc)
441{
442 VLANPacket **pp = &vc->vlan->send_queue;
443
444 while (*pp != NULL) {
445 VLANPacket *packet = *pp;
446
447 if (packet->sender == vc) {
448 *pp = packet->next;
449 qemu_free(packet);
450 } else {
451 pp = &packet->next;
452 }
453 }
454}
455
f3b6c7fc 456void qemu_flush_queued_packets(VLANClientState *vc)
e94667b9
MM		 457{
458 VLANPacket *packet;
459
460 while ((packet = vc->vlan->send_queue) != NULL) {
f3b6c7fc
MM		 461 int ret;
462
e94667b9 463 vc->vlan->send_queue = packet->next;
f3b6c7fc
MM		 464
465 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
466 if (ret == 0 && packet->sent_cb != NULL) {
467 packet->next = vc->vlan->send_queue;
468 vc->vlan->send_queue = packet;
469 break;
470 }
471
472 if (packet->sent_cb)
783527a9 473 packet->sent_cb(packet->sender, ret);
f3b6c7fc 474
e94667b9
MM		 475 qemu_free(packet);
476 }
477}
478
f3b6c7fc
MM		 479static void qemu_enqueue_packet(VLANClientState *sender,
480 const uint8_t *buf, int size,
481 NetPacketSent *sent_cb)
e94667b9
MM		 482{
483 VLANPacket *packet;
484
485 packet = qemu_malloc(sizeof(VLANPacket) + size);
486 packet->next = sender->vlan->send_queue;
487 packet->sender = sender;
488 packet->size = size;
f3b6c7fc 489 packet->sent_cb = sent_cb;
e94667b9
MM		 490 memcpy(packet->data, buf, size);
491 sender->vlan->send_queue = packet;
492}
493
f3b6c7fc
MM		 494ssize_t qemu_send_packet_async(VLANClientState *sender,
495 const uint8_t *buf, int size,
496 NetPacketSent *sent_cb)
764a4d1d 497{
f3b6c7fc 498 int ret;
764a4d1d 499
f3b6c7fc
MM		 500 if (sender->link_down) {
501 return size;
502 }
436e5e53 503
63a01ef8 504#ifdef DEBUG_NET
f3b6c7fc 505 printf("vlan %d send:\n", sender->vlan->id);
63a01ef8
AL		 506 hex_dump(stdout, buf, size);
507#endif
f3b6c7fc
MM		 508
509 if (sender->vlan->delivering) {
510 qemu_enqueue_packet(sender, buf, size, NULL);
511 return size;
512 }
513
514 ret = qemu_deliver_packet(sender, buf, size);
515 if (ret == 0 && sent_cb != NULL) {
516 qemu_enqueue_packet(sender, buf, size, sent_cb);
517 return 0;
63a01ef8 518 }
e94667b9 519
f3b6c7fc
MM		 520 qemu_flush_queued_packets(sender);
521
522 return ret;
523}
524
525void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
526{
527 qemu_send_packet_async(vc, buf, size, NULL);
63a01ef8
AL		 528}
529
fbe78f4f
AL		 530static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
531 int iovcnt)
532{
533 uint8_t buffer[4096];
534 size_t offset = 0;
535 int i;
536
537 for (i = 0; i < iovcnt; i++) {
538 size_t len;
539
540 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
541 memcpy(buffer + offset, iov[i].iov_base, len);
542 offset += len;
543 }
544
f3b6c7fc 545 return vc->receive(vc, buffer, offset);
fbe78f4f
AL		 546}
547
e0e7877a
AL		 548static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
549{
550 size_t offset = 0;
551 int i;
552
553 for (i = 0; i < iovcnt; i++)
554 offset += iov[i].iov_len;
555 return offset;
556}
557
e94667b9
MM		 558static int qemu_deliver_packet_iov(VLANClientState *sender,
559 const struct iovec *iov, int iovcnt)
fbe78f4f 560{
fbe78f4f 561 VLANClientState *vc;
e94667b9
MM		 562 int ret = -1;
563
564 sender->vlan->delivering = 1;
565
566 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
567 ssize_t len;
568
569 if (vc == sender) {
570 continue;
571 }
572
573 if (vc->link_down) {
574 ret = calc_iov_length(iov, iovcnt);
575 continue;
576 }
577
578 if (vc->receive_iov) {
579 len = vc->receive_iov(vc, iov, iovcnt);
580 } else {
581 len = vc_sendv_compat(vc, iov, iovcnt);
582 }
583
584 ret = (ret >= 0) ? ret : len;
585 }
586
587 sender->vlan->delivering = 0;
588
589 return ret;
590}
591
592static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
f3b6c7fc
MM		 593 const struct iovec *iov, int iovcnt,
594 NetPacketSent *sent_cb)
e94667b9 595{
c27ff608 596 VLANPacket *packet;
e94667b9 597 size_t max_len = 0;
c27ff608 598 int i;
fbe78f4f 599
e94667b9 600 max_len = calc_iov_length(iov, iovcnt);
e0e7877a 601
e94667b9
MM		 602 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
603 packet->next = sender->vlan->send_queue;
604 packet->sender = sender;
f3b6c7fc 605 packet->sent_cb = sent_cb;
e94667b9 606 packet->size = 0;
c27ff608 607
e94667b9
MM		 608 for (i = 0; i < iovcnt; i++) {
609 size_t len = iov[i].iov_len;
c27ff608 610
e94667b9
MM		 611 memcpy(packet->data + packet->size, iov[i].iov_base, len);
612 packet->size += len;
613 }
fbe78f4f 614
e94667b9 615 sender->vlan->send_queue = packet;
fbe78f4f 616
e94667b9
MM		 617 return packet->size;
618}
fbe78f4f 619
f3b6c7fc
MM		 620ssize_t qemu_sendv_packet_async(VLANClientState *sender,
621 const struct iovec *iov, int iovcnt,
622 NetPacketSent *sent_cb)
e94667b9
MM		 623{
624 int ret;
625
626 if (sender->link_down) {
627 return calc_iov_length(iov, iovcnt);
628 }
629
630 if (sender->vlan->delivering) {
f3b6c7fc 631 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
fbe78f4f
AL		 632 }
633
e94667b9 634 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
f3b6c7fc
MM		 635 if (ret == 0 && sent_cb != NULL) {
636 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
637 return 0;
638 }
e94667b9
MM		 639
640 qemu_flush_queued_packets(sender);
641
642 return ret;
fbe78f4f
AL		 643}
644
f3b6c7fc
MM		 645ssize_t
646qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
647{
648 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
649}
650
10ae5a7a
JK		 651static void config_error(Monitor *mon, const char *fmt, ...)
652{
653 va_list ap;
654
655 va_start(ap, fmt);
656 if (mon) {
657 monitor_vprintf(mon, fmt, ap);
658 } else {
659 fprintf(stderr, "qemu: ");
660 vfprintf(stderr, fmt, ap);
661 exit(1);
662 }
663 va_end(ap);
664}
665
63a01ef8
AL		 666#if defined(CONFIG_SLIRP)
667
668/* slirp network adapter */
669
c92ef6a2
JK		 670#define SLIRP_CFG_HOSTFWD 1
671#define SLIRP_CFG_LEGACY 2
ad196a9d 672
b8e8af38
JK		 673struct slirp_config_str {
674 struct slirp_config_str *next;
ad196a9d
JK		 675 int flags;
676 char str[1024];
c92ef6a2 677 int legacy_format;
b8e8af38
JK		 678};
679
9f8bd042
JK		 680typedef struct SlirpState {
681 VLANClientState *vc;
682 Slirp *slirp;
683} SlirpState;
684
ad196a9d
JK		 685static struct slirp_config_str *slirp_configs;
686const char *legacy_tftp_prefix;
687const char *legacy_bootp_filename;
9f8bd042 688static SlirpState *slirp_state;
63a01ef8 689
9f8bd042 690static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
3c6a0580 691 int legacy_format);
9f8bd042 692static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
c92ef6a2 693 int legacy_format);
ad196a9d 694
c5b76b38 695#ifndef _WIN32
ad196a9d
JK		 696static const char *legacy_smb_export;
697
9f8bd042
JK		 698static void slirp_smb(SlirpState *s, const char *exported_dir,
699 struct in_addr vserver_addr);
c5b76b38 700#endif
b8e8af38 701
9f8bd042 702int slirp_can_output(void *opaque)
63a01ef8 703{
9f8bd042
JK		 704 SlirpState *s = opaque;
705
706 return qemu_can_send_packet(s->vc);
63a01ef8
AL		 707}
708
9f8bd042 709void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
63a01ef8 710{
9f8bd042
JK		 711 SlirpState *s = opaque;
712
63a01ef8
AL		 713#ifdef DEBUG_SLIRP
714 printf("slirp output:\n");
715 hex_dump(stdout, pkt, pkt_len);
716#endif
9f8bd042 717 qemu_send_packet(s->vc, pkt, pkt_len);
63a01ef8
AL		 718}
719
4f1c942b 720static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 721{
9f8bd042
JK		 722 SlirpState *s = vc->opaque;
723
63a01ef8
AL		 724#ifdef DEBUG_SLIRP
725 printf("slirp input:\n");
726 hex_dump(stdout, buf, size);
727#endif
9f8bd042 728 slirp_input(s->slirp, buf, size);
4f1c942b 729 return size;
63a01ef8
AL		 730}
731
8d6249a7
AL		 732static void net_slirp_cleanup(VLANClientState *vc)
733{
ad0d8c4c
JK		 734 SlirpState *s = vc->opaque;
735
736 slirp_cleanup(s->slirp);
737 slirp_state = NULL;
738 qemu_free(s);
8d6249a7
AL		 739}
740
ad196a9d 741static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
c92ef6a2
JK		 742 const char *name, int restricted,
743 const char *vnetwork, const char *vhost,
744 const char *vhostname, const char *tftp_export,
745 const char *bootfile, const char *vdhcp_start,
746 const char *vnameserver, const char *smb_export,
747 const char *vsmbserver)
63a01ef8 748{
ad0d8c4c
JK		 749 /* default settings according to historic slirp */
750 struct in_addr net = { .s_addr = htonl(0x0a000000) }; /* 10.0.0.0 */
751 struct in_addr mask = { .s_addr = htonl(0xff000000) }; /* 255.0.0.0 */
752 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
753 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
754 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
c92ef6a2 755#ifndef _WIN32
ad0d8c4c 756 struct in_addr smbsrv = { .s_addr = 0 };
c92ef6a2 757#endif
ad0d8c4c
JK		 758 SlirpState *s;
759 char buf[20];
760 uint32_t addr;
761 int shift;
762 char *end;
763
764 if (!tftp_export) {
765 tftp_export = legacy_tftp_prefix;
766 }
767 if (!bootfile) {
768 bootfile = legacy_bootp_filename;
769 }
c92ef6a2 770
ad0d8c4c
JK		 771 if (vnetwork) {
772 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
773 if (!inet_aton(vnetwork, &net)) {
774 return -1;
775 }
776 addr = ntohl(net.s_addr);
777 if (!(addr & 0x80000000)) {
778 mask.s_addr = htonl(0xff000000); /* class A */
779 } else if ((addr & 0xfff00000) == 0xac100000) {
780 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
781 } else if ((addr & 0xc0000000) == 0x80000000) {
782 mask.s_addr = htonl(0xffff0000); /* class B */
783 } else if ((addr & 0xffff0000) == 0xc0a80000) {
784 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
785 } else if ((addr & 0xffff0000) == 0xc6120000) {
786 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
787 } else if ((addr & 0xe0000000) == 0xe0000000) {
788 mask.s_addr = htonl(0xffffff00); /* class C */
c92ef6a2 789 } else {
ad0d8c4c
JK		 790 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
791 }
792 } else {
793 if (!inet_aton(buf, &net)) {
794 return -1;
795 }
796 shift = strtol(vnetwork, &end, 10);
797 if (*end != '\0') {
798 if (!inet_aton(vnetwork, &mask)) {
c92ef6a2 799 return -1;
c92ef6a2 800 }
ad0d8c4c
JK		 801 } else if (shift < 4 || shift > 32) {
802 return -1;
803 } else {
804 mask.s_addr = htonl(0xffffffff << (32 - shift));
c92ef6a2 805 }
c92ef6a2 806 }
ad0d8c4c
JK		 807 net.s_addr &= mask.s_addr;
808 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
809 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
810 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
811 }
c92ef6a2 812
ad0d8c4c
JK		 813 if (vhost && !inet_aton(vhost, &host)) {
814 return -1;
815 }
816 if ((host.s_addr & mask.s_addr) != net.s_addr) {
817 return -1;
818 }
c92ef6a2 819
ad0d8c4c
JK		 820 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
821 return -1;
822 }
823 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
824 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
825 return -1;
826 }
c92ef6a2 827
ad0d8c4c
JK		 828 if (vnameserver && !inet_aton(vnameserver, &dns)) {
829 return -1;
830 }
831 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
832 dns.s_addr == host.s_addr) {
833 return -1;
834 }
c92ef6a2
JK		 835
836#ifndef _WIN32
ad0d8c4c
JK		 837 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
838 return -1;
839 }
c92ef6a2
JK		 840#endif
841
ad0d8c4c
JK		 842 s = qemu_mallocz(sizeof(SlirpState));
843 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
844 tftp_export, bootfile, dhcp, dns, s);
845 slirp_state = s;
b8e8af38 846
ad0d8c4c
JK		 847 while (slirp_configs) {
848 struct slirp_config_str *config = slirp_configs;
b8e8af38 849
ad0d8c4c
JK		 850 if (config->flags & SLIRP_CFG_HOSTFWD) {
851 slirp_hostfwd(s, mon, config->str,
852 config->flags & SLIRP_CFG_LEGACY);
853 } else {
854 slirp_guestfwd(s, mon, config->str,
855 config->flags & SLIRP_CFG_LEGACY);
b8e8af38 856 }
ad0d8c4c
JK		 857 slirp_configs = config->next;
858 qemu_free(config);
859 }
b8e8af38 860#ifndef _WIN32
ad0d8c4c
JK		 861 if (!smb_export) {
862 smb_export = legacy_smb_export;
863 }
864 if (smb_export) {
865 slirp_smb(s, smb_export, smbsrv);
63a01ef8 866 }
ad0d8c4c 867#endif
b8e8af38 868
9f8bd042
JK		 869 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
870 net_slirp_cleanup, s);
871 s->vc->info_str[0] = '\0';
63a01ef8
AL		 872 return 0;
873}
874
3c6a0580 875void net_slirp_hostfwd_remove(Monitor *mon, const char *src_str)
c1261d8d 876{
3c6a0580 877 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c1261d8d
AG		 878 int host_port;
879 char buf[256] = "";
3c6a0580 880 const char *p = src_str;
c1261d8d 881 int is_udp = 0;
9c12a6f2 882 int err;
c1261d8d 883
9f8bd042 884 if (!slirp_state) {
f3546deb 885 monitor_printf(mon, "user mode network stack not in use\n");
c1261d8d 886 return;
f3546deb 887 }
c1261d8d 888
3c6a0580 889 if (!src_str || !src_str[0])
c1261d8d
AG		 890 goto fail_syntax;
891
892 get_str_sep(buf, sizeof(buf), &p, ':');
893
894 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
895 is_udp = 0;
896 } else if (!strcmp(buf, "udp")) {
897 is_udp = 1;
898 } else {
899 goto fail_syntax;
900 }
901
3c6a0580
JK		 902 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
903 goto fail_syntax;
904 }
905 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
906 goto fail_syntax;
907 }
908
c1261d8d
AG		 909 host_port = atoi(p);
910
9f8bd042
JK		 911 err = slirp_remove_hostfwd(slirp_state->slirp, is_udp,
912 host_addr, host_port);
c1261d8d 913
9c12a6f2
JK		 914 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
915 err ? "removed" : "not found");
c1261d8d
AG		 916 return;
917
918 fail_syntax:
919 monitor_printf(mon, "invalid format\n");
920}
921
9f8bd042 922static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
3c6a0580 923 int legacy_format)
63a01ef8 924{
3c6a0580 925 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c92ef6a2 926 struct in_addr guest_addr = { .s_addr = 0 };
63a01ef8 927 int host_port, guest_port;
b8e8af38 928 const char *p;
c92ef6a2 929 char buf[256];
b8e8af38 930 int is_udp;
c92ef6a2 931 char *end;
1c6ed9f3 932
63a01ef8 933 p = redir_str;
b8e8af38 934 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 935 goto fail_syntax;
b8e8af38 936 }
d4ebe193 937 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
63a01ef8
AL		 938 is_udp = 0;
939 } else if (!strcmp(buf, "udp")) {
940 is_udp = 1;
941 } else {
d4ebe193 942 goto fail_syntax;
63a01ef8
AL		 943 }
944
3c6a0580
JK		 945 if (!legacy_format) {
946 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
947 goto fail_syntax;
948 }
949 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
950 goto fail_syntax;
951 }
952 }
953
954 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
d4ebe193 955 goto fail_syntax;
b8e8af38 956 }
c92ef6a2
JK		 957 host_port = strtol(buf, &end, 0);
958 if (*end != '\0' || host_port < 1 || host_port > 65535) {
d4ebe193 959 goto fail_syntax;
b8e8af38 960 }
63a01ef8 961
b8e8af38 962 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 963 goto fail_syntax;
b8e8af38 964 }
c92ef6a2 965 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
d4ebe193 966 goto fail_syntax;
b8e8af38 967 }
63a01ef8 968
c92ef6a2
JK		 969 guest_port = strtol(p, &end, 0);
970 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
d4ebe193 971 goto fail_syntax;
b8e8af38 972 }
63a01ef8 973
9f8bd042
JK		 974 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
975 guest_port) < 0) {
c92ef6a2
JK		 976 config_error(mon, "could not set up host forwarding rule '%s'\n",
977 redir_str);
63a01ef8
AL		 978 }
979 return;
d4ebe193
AL		 980
981 fail_syntax:
c92ef6a2 982 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
63a01ef8
AL		 983}
984
f3546deb 985void net_slirp_hostfwd_add(Monitor *mon, const char *redir_str)
b8e8af38 986{
9f8bd042 987 if (!slirp_state) {
f3546deb 988 monitor_printf(mon, "user mode network stack not in use\n");
b8e8af38
JK		 989 return;
990 }
991
9f8bd042 992 slirp_hostfwd(slirp_state, mon, redir_str, 0);
f3546deb
JK		 993}
994
995void net_slirp_redir(const char *redir_str)
996{
997 struct slirp_config_str *config;
998
9f8bd042 999 if (!slirp_state) {
f3546deb
JK		 1000 config = qemu_malloc(sizeof(*config));
1001 pstrcpy(config->str, sizeof(config->str), redir_str);
3c6a0580 1002 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
f3546deb
JK		 1003 config->next = slirp_configs;
1004 slirp_configs = config;
b8e8af38
JK		 1005 return;
1006 }
1007
9f8bd042 1008 slirp_hostfwd(slirp_state, NULL, redir_str, 1);
b8e8af38
JK		 1009}
1010
63a01ef8
AL		 1011#ifndef _WIN32
1012
1013static char smb_dir[1024];
1014
1015static void erase_dir(char *dir_name)
1016{
1017 DIR *d;
1018 struct dirent *de;
1019 char filename[1024];
1020
1021 /* erase all the files in the directory */
511d2b14 1022 if ((d = opendir(dir_name)) != NULL) {
63a01ef8
AL		 1023 for(;;) {
1024 de = readdir(d);
1025 if (!de)
1026 break;
1027 if (strcmp(de->d_name, ".") != 0 &&
1028 strcmp(de->d_name, "..") != 0) {
1029 snprintf(filename, sizeof(filename), "%s/%s",
1030 smb_dir, de->d_name);
1031 if (unlink(filename) != 0) /* is it a directory? */
1032 erase_dir(filename);
1033 }
1034 }
1035 closedir(d);
1036 rmdir(dir_name);
1037 }
1038}
1039
1040/* automatic user mode samba server configuration */
1041static void smb_exit(void)
1042{
1043 erase_dir(smb_dir);
1044}
1045
9f8bd042
JK		 1046static void slirp_smb(SlirpState* s, const char *exported_dir,
1047 struct in_addr vserver_addr)
63a01ef8
AL		 1048{
1049 char smb_conf[1024];
1050 char smb_cmdline[1024];
1051 FILE *f;
1052
63a01ef8 1053 /* XXX: better tmp dir construction */
3f4cb3d3 1054 snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%ld", (long)getpid());
63a01ef8
AL		 1055 if (mkdir(smb_dir, 0700) < 0) {
1056 fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
1057 exit(1);
1058 }
1059 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
1060
1061 f = fopen(smb_conf, "w");
1062 if (!f) {
1063 fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
1064 exit(1);
1065 }
1066 fprintf(f,
1067 "[global]\n"
1068 "private dir=%s\n"
1069 "smb ports=0\n"
1070 "socket address=127.0.0.1\n"
1071 "pid directory=%s\n"
1072 "lock directory=%s\n"
1073 "log file=%s/log.smbd\n"
1074 "smb passwd file=%s/smbpasswd\n"
1075 "security = share\n"
1076 "[qemu]\n"
1077 "path=%s\n"
1078 "read only=no\n"
1079 "guest ok=yes\n",
1080 smb_dir,
1081 smb_dir,
1082 smb_dir,
1083 smb_dir,
1084 smb_dir,
1085 exported_dir
1086 );
1087 fclose(f);
1088 atexit(smb_exit);
1089
1090 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1091 SMBD_COMMAND, smb_conf);
1092
9f8bd042 1093 if (slirp_add_exec(s->slirp, 0, smb_cmdline, vserver_addr, 139) < 0) {
c92ef6a2
JK		 1094 fprintf(stderr, "conflicting/invalid smbserver address\n");
1095 exit(1);
1096 }
63a01ef8
AL		 1097}
1098
ad196a9d 1099/* automatic user mode samba server configuration (legacy interface) */
b8e8af38
JK		 1100void net_slirp_smb(const char *exported_dir)
1101{
c92ef6a2
JK		 1102 struct in_addr vserver_addr = { .s_addr = 0 };
1103
ad196a9d 1104 if (legacy_smb_export) {
b8e8af38
JK		 1105 fprintf(stderr, "-smb given twice\n");
1106 exit(1);
1107 }
ad196a9d 1108 legacy_smb_export = exported_dir;
9f8bd042
JK		 1109 if (slirp_state) {
1110 slirp_smb(slirp_state, exported_dir, vserver_addr);
b8e8af38
JK		 1111 }
1112}
1113
63a01ef8 1114#endif /* !defined(_WIN32) */
b8e8af38 1115
c92ef6a2 1116struct GuestFwd {
8ca9217d 1117 CharDriverState *hd;
c92ef6a2 1118 struct in_addr server;
8ca9217d 1119 int port;
9f8bd042 1120 Slirp *slirp;
511d2b14 1121};
8ca9217d 1122
c92ef6a2 1123static int guestfwd_can_read(void *opaque)
8ca9217d 1124{
c92ef6a2 1125 struct GuestFwd *fwd = opaque;
9f8bd042 1126 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
8ca9217d
AL		 1127}
1128
c92ef6a2 1129static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
8ca9217d 1130{
c92ef6a2 1131 struct GuestFwd *fwd = opaque;
9f8bd042 1132 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
8ca9217d
AL		 1133}
1134
9f8bd042 1135static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
c92ef6a2 1136 int legacy_format)
ad196a9d 1137{
c92ef6a2
JK		 1138 struct in_addr server = { .s_addr = 0 };
1139 struct GuestFwd *fwd;
1140 const char *p;
1141 char buf[128];
1142 char *end;
ad196a9d
JK		 1143 int port;
1144
c92ef6a2
JK		 1145 p = config_str;
1146 if (legacy_format) {
1147 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1148 goto fail_syntax;
1149 }
1150 } else {
1151 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1152 goto fail_syntax;
1153 }
1154 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1155 goto fail_syntax;
1156 }
1157 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1158 goto fail_syntax;
1159 }
1160 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1161 goto fail_syntax;
1162 }
1163 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1164 goto fail_syntax;
1165 }
1166 }
1167 port = strtol(buf, &end, 10);
1168 if (*end != '\0' || port < 1 || port > 65535) {
1169 goto fail_syntax;
ad196a9d 1170 }
ad196a9d 1171
c92ef6a2
JK		 1172 fwd = qemu_malloc(sizeof(struct GuestFwd));
1173 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1174 fwd->hd = qemu_chr_open(buf, p, NULL);
1175 if (!fwd->hd) {
1176 config_error(mon, "could not open guest forwarding device '%s'\n",
1177 buf);
1178 qemu_free(fwd);
ad196a9d
JK		 1179 return;
1180 }
c92ef6a2
JK		 1181 fwd->server = server;
1182 fwd->port = port;
9f8bd042 1183 fwd->slirp = s->slirp;
ad196a9d 1184
9f8bd042 1185 if (slirp_add_exec(s->slirp, 3, fwd->hd, server, port) < 0) {
c92ef6a2
JK		 1186 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1187 "rule '%s'\n", config_str);
1188 qemu_free(fwd);
1189 return;
1190 }
1191 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1192 NULL, fwd);
ad196a9d 1193 return;
c92ef6a2
JK		 1194
1195 fail_syntax:
1196 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
ad196a9d
JK		 1197}
1198
6dbe553f
JK		 1199void do_info_usernet(Monitor *mon)
1200{
9f8bd042
JK		 1201 SlirpState *s = slirp_state;
1202
1203 if (!s) {
1204 return;
1205 }
1206 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1207 slirp_connection_info(s->slirp, mon);
6dbe553f
JK		 1208}
1209
63a01ef8
AL		 1210#endif /* CONFIG_SLIRP */
1211
1212#if !defined(_WIN32)
1213
1214typedef struct TAPState {
1215 VLANClientState *vc;
1216 int fd;
1217 char down_script[1024];
973cbd37 1218 char down_script_arg[128];
5b01e886 1219 uint8_t buf[4096];
b664e367 1220 unsigned int read_poll : 1;
1f7babf6 1221 unsigned int write_poll : 1;
63a01ef8
AL		 1222} TAPState;
1223
b946a153
AL		 1224static int launch_script(const char *setup_script, const char *ifname, int fd);
1225
b664e367
MM		 1226static int tap_can_send(void *opaque);
1227static void tap_send(void *opaque);
1f7babf6 1228static void tap_writable(void *opaque);
b664e367
MM		 1229
1230static void tap_update_fd_handler(TAPState *s)
1231{
1232 qemu_set_fd_handler2(s->fd,
1233 s->read_poll ? tap_can_send : NULL,
1234 s->read_poll ? tap_send : NULL,
1f7babf6 1235 s->write_poll ? tap_writable : NULL,
b664e367
MM		 1236 s);
1237}
1238
1239static void tap_read_poll(TAPState *s, int enable)
1240{
1241 s->read_poll = !!enable;
1242 tap_update_fd_handler(s);
1243}
1244
1f7babf6
MM		 1245static void tap_write_poll(TAPState *s, int enable)
1246{
1247 s->write_poll = !!enable;
1248 tap_update_fd_handler(s);
1249}
1250
1251static void tap_writable(void *opaque)
1252{
1253 TAPState *s = opaque;
1254
1255 tap_write_poll(s, 0);
1256
1257 qemu_flush_queued_packets(s->vc);
1258}
1259
e3f5ec2b 1260static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
b535b7b2
AL		 1261 int iovcnt)
1262{
e3f5ec2b 1263 TAPState *s = vc->opaque;
b535b7b2
AL		 1264 ssize_t len;
1265
1266 do {
1267 len = writev(s->fd, iov, iovcnt);
1f7babf6
MM		 1268 } while (len == -1 && errno == EINTR);
1269
1270 if (len == -1 && errno == EAGAIN) {
1271 tap_write_poll(s, 1);
1272 return 0;
1273 }
b535b7b2
AL		 1274
1275 return len;
1276}
b535b7b2 1277
4f1c942b 1278static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1279{
e3f5ec2b 1280 TAPState *s = vc->opaque;
4f1c942b
MM		 1281 ssize_t len;
1282
1283 do {
1284 len = write(s->fd, buf, size);
1285 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1286
1287 return len;
63a01ef8
AL		 1288}
1289
3471b757
MM		 1290static int tap_can_send(void *opaque)
1291{
1292 TAPState *s = opaque;
1293
1294 return qemu_can_send_packet(s->vc);
1295}
1296
63a01ef8 1297#ifdef __sun__
5a6d8815
MM		 1298static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1299{
63a01ef8
AL		 1300 struct strbuf sbuf;
1301 int f = 0;
5a6d8815
MM		 1302
1303 sbuf.maxlen = maxlen;
3f4cb3d3 1304 sbuf.buf = (char *)buf;
5a6d8815
MM		 1305
1306 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1307}
63a01ef8 1308#else
5a6d8815
MM		 1309static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1310{
1311 return read(tapfd, buf, maxlen);
1312}
63a01ef8 1313#endif
5a6d8815 1314
783527a9 1315static void tap_send_completed(VLANClientState *vc, ssize_t len)
e19eb224
MM		 1316{
1317 TAPState *s = vc->opaque;
b664e367 1318 tap_read_poll(s, 1);
e19eb224
MM		 1319}
1320
5a6d8815
MM		 1321static void tap_send(void *opaque)
1322{
1323 TAPState *s = opaque;
5a6d8815
MM		 1324 int size;
1325
e19eb224
MM		 1326 do {
1327 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1328 if (size <= 0) {
1329 break;
1330 }
1331
1332 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1333 if (size == 0) {
b664e367 1334 tap_read_poll(s, 0);
e19eb224
MM		 1335 }
1336 } while (size > 0);
63a01ef8
AL		 1337}
1338
0df0ff6d
MM		 1339static void tap_set_sndbuf(TAPState *s, int sndbuf, Monitor *mon)
1340{
1341#ifdef TUNSETSNDBUF
1342 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1) {
1343 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1344 strerror(errno));
1345 }
1346#else
1347 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1348#endif
1349}
1350
b946a153
AL		 1351static void tap_cleanup(VLANClientState *vc)
1352{
1353 TAPState *s = vc->opaque;
1354
b9adce2c
MM		 1355 qemu_purge_queued_packets(vc);
1356
b946a153
AL		 1357 if (s->down_script[0])
1358 launch_script(s->down_script, s->down_script_arg, s->fd);
1359
b664e367 1360 tap_read_poll(s, 0);
1f7babf6 1361 tap_write_poll(s, 0);
b946a153
AL		 1362 close(s->fd);
1363 qemu_free(s);
1364}
1365
63a01ef8
AL		 1366/* fd support */
1367
7a9f6e4a
AL		 1368static TAPState *net_tap_fd_init(VLANState *vlan,
1369 const char *model,
1370 const char *name,
1371 int fd)
63a01ef8
AL		 1372{
1373 TAPState *s;
1374
1375 s = qemu_mallocz(sizeof(TAPState));
63a01ef8 1376 s->fd = fd;
463af534
MM		 1377 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1378 tap_receive_iov, tap_cleanup, s);
b664e367 1379 tap_read_poll(s, 1);
7cb7434b 1380 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
63a01ef8
AL		 1381 return s;
1382}
1383
179a2c19 1384#if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
63a01ef8
AL		 1385static int tap_open(char *ifname, int ifname_size)
1386{
1387 int fd;
1388 char *dev;
1389 struct stat s;
1390
1391 TFR(fd = open("/dev/tap", O_RDWR));
1392 if (fd < 0) {
1393 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1394 return -1;
1395 }
1396
1397 fstat(fd, &s);
1398 dev = devname(s.st_rdev, S_IFCHR);
1399 pstrcpy(ifname, ifname_size, dev);
1400
1401 fcntl(fd, F_SETFL, O_NONBLOCK);
1402 return fd;
1403}
1404#elif defined(__sun__)
1405#define TUNNEWPPA (('T'<<16) | 0x0001)
1406/*
1407 * Allocate TAP device, returns opened fd.
1408 * Stores dev name in the first arg(must be large enough).
1409 */
3f4cb3d3 1410static int tap_alloc(char *dev, size_t dev_size)
63a01ef8
AL		 1411{
1412 int tap_fd, if_fd, ppa = -1;
1413 static int ip_fd = 0;
1414 char *ptr;
1415
1416 static int arp_fd = 0;
1417 int ip_muxid, arp_muxid;
1418 struct strioctl strioc_if, strioc_ppa;
1419 int link_type = I_PLINK;;
1420 struct lifreq ifr;
1421 char actual_name[32] = "";
1422
1423 memset(&ifr, 0x0, sizeof(ifr));
1424
1425 if( *dev ){
1426 ptr = dev;
47398b9c 1427 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
63a01ef8
AL		 1428 ppa = atoi(ptr);
1429 }
1430
1431 /* Check if IP device was opened */
1432 if( ip_fd )
1433 close(ip_fd);
1434
1435 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1436 if (ip_fd < 0) {
1437 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1438 return -1;
1439 }
1440
1441 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1442 if (tap_fd < 0) {
1443 syslog(LOG_ERR, "Can't open /dev/tap");
1444 return -1;
1445 }
1446
1447 /* Assign a new PPA and get its unit number. */
1448 strioc_ppa.ic_cmd = TUNNEWPPA;
1449 strioc_ppa.ic_timout = 0;
1450 strioc_ppa.ic_len = sizeof(ppa);
1451 strioc_ppa.ic_dp = (char *)&ppa;
1452 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1453 syslog (LOG_ERR, "Can't assign new interface");
1454
1455 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1456 if (if_fd < 0) {
1457 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1458 return -1;
1459 }
1460 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1461 syslog(LOG_ERR, "Can't push IP module");
1462 return -1;
1463 }
1464
1465 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1466 syslog(LOG_ERR, "Can't get flags\n");
1467
1468 snprintf (actual_name, 32, "tap%d", ppa);
1469 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1470
1471 ifr.lifr_ppa = ppa;
1472 /* Assign ppa according to the unit number returned by tun device */
1473
1474 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1475 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1476 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1477 syslog (LOG_ERR, "Can't get flags\n");
1478 /* Push arp module to if_fd */
1479 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1480 syslog (LOG_ERR, "Can't push ARP module (2)");
1481
1482 /* Push arp module to ip_fd */
1483 if (ioctl (ip_fd, I_POP, NULL) < 0)
1484 syslog (LOG_ERR, "I_POP failed\n");
1485 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1486 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1487 /* Open arp_fd */
1488 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1489 if (arp_fd < 0)
1490 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1491
1492 /* Set ifname to arp */
1493 strioc_if.ic_cmd = SIOCSLIFNAME;
1494 strioc_if.ic_timout = 0;
1495 strioc_if.ic_len = sizeof(ifr);
1496 strioc_if.ic_dp = (char *)&ifr;
1497 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1498 syslog (LOG_ERR, "Can't set ifname to arp\n");
1499 }
1500
1501 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1502 syslog(LOG_ERR, "Can't link TAP device to IP");
1503 return -1;
1504 }
1505
1506 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1507 syslog (LOG_ERR, "Can't link TAP device to ARP");
1508
1509 close (if_fd);
1510
1511 memset(&ifr, 0x0, sizeof(ifr));
1512 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1513 ifr.lifr_ip_muxid = ip_muxid;
1514 ifr.lifr_arp_muxid = arp_muxid;
1515
1516 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1517 {
1518 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1519 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1520 syslog (LOG_ERR, "Can't set multiplexor id");
1521 }
1522
1523 snprintf(dev, dev_size, "tap%d", ppa);
1524 return tap_fd;
1525}
1526
1527static int tap_open(char *ifname, int ifname_size)
1528{
1529 char dev[10]="";
1530 int fd;
1531 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1532 fprintf(stderr, "Cannot allocate TAP device\n");
1533 return -1;
1534 }
1535 pstrcpy(ifname, ifname_size, dev);
1536 fcntl(fd, F_SETFL, O_NONBLOCK);
1537 return fd;
1538}
b29fe3ed 1539#elif defined (_AIX)
1540static int tap_open(char *ifname, int ifname_size)
1541{
1542 fprintf (stderr, "no tap on AIX\n");
1543 return -1;
1544}
63a01ef8
AL		 1545#else
1546static int tap_open(char *ifname, int ifname_size)
1547{
1548 struct ifreq ifr;
1549 int fd, ret;
1550
1551 TFR(fd = open("/dev/net/tun", O_RDWR));
1552 if (fd < 0) {
1553 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1554 return -1;
1555 }
1556 memset(&ifr, 0, sizeof(ifr));
1557 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1558 if (ifname[0] != '\0')
1559 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1560 else
1561 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1562 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1563 if (ret != 0) {
1564 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1565 close(fd);
1566 return -1;
1567 }
1568 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1569 fcntl(fd, F_SETFL, O_NONBLOCK);
1570 return fd;
1571}
1572#endif
1573
1574static int launch_script(const char *setup_script, const char *ifname, int fd)
1575{
7c3370d4 1576 sigset_t oldmask, mask;
63a01ef8
AL		 1577 int pid, status;
1578 char *args[3];
1579 char **parg;
1580
7c3370d4
JK		 1581 sigemptyset(&mask);
1582 sigaddset(&mask, SIGCHLD);
1583 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1584
1585 /* try to launch network script */
1586 pid = fork();
1587 if (pid == 0) {
1588 int open_max = sysconf(_SC_OPEN_MAX), i;
1589
1590 for (i = 0; i < open_max; i++) {
1591 if (i != STDIN_FILENO &&
1592 i != STDOUT_FILENO &&
1593 i != STDERR_FILENO &&
1594 i != fd) {
1595 close(i);
63a01ef8
AL		 1596 }
1597 }
7c3370d4
JK		 1598 parg = args;
1599 *parg++ = (char *)setup_script;
1600 *parg++ = (char *)ifname;
1601 *parg++ = NULL;
1602 execv(setup_script, args);
1603 _exit(1);
1604 } else if (pid > 0) {
1605 while (waitpid(pid, &status, 0) != pid) {
1606 /* loop */
1607 }
1608 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1609
1610 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1611 return 0;
1612 }
1613 }
1614 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1615 return -1;
63a01ef8
AL		 1616}
1617
4a77b25e
MM		 1618static TAPState *net_tap_init(VLANState *vlan, const char *model,
1619 const char *name, const char *ifname1,
1620 const char *setup_script, const char *down_script)
63a01ef8
AL		 1621{
1622 TAPState *s;
1623 int fd;
1624 char ifname[128];
1625
1626 if (ifname1 != NULL)
1627 pstrcpy(ifname, sizeof(ifname), ifname1);
1628 else
1629 ifname[0] = '\0';
1630 TFR(fd = tap_open(ifname, sizeof(ifname)));
1631 if (fd < 0)
4a77b25e 1632 return NULL;
63a01ef8
AL		 1633
1634 if (!setup_script || !strcmp(setup_script, "no"))
1635 setup_script = "";
4a77b25e
MM		 1636 if (setup_script[0] != '\0' &&
1637 launch_script(setup_script, ifname, fd)) {
1638 return NULL;
63a01ef8 1639 }
7a9f6e4a 1640 s = net_tap_fd_init(vlan, model, name, fd);
63a01ef8 1641 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
7cb7434b
AL		 1642 "ifname=%s,script=%s,downscript=%s",
1643 ifname, setup_script, down_script);
973cbd37 1644 if (down_script && strcmp(down_script, "no")) {
63a01ef8 1645 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
973cbd37
AL		 1646 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1647 }
4a77b25e 1648 return s;
63a01ef8
AL		 1649}
1650
1651#endif /* !_WIN32 */
1652
1653#if defined(CONFIG_VDE)
1654typedef struct VDEState {
1655 VLANClientState *vc;
1656 VDECONN *vde;
1657} VDEState;
1658
1659static void vde_to_qemu(void *opaque)
1660{
1661 VDEState *s = opaque;
1662 uint8_t buf[4096];
1663 int size;
1664
cc63bb0f 1665 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
63a01ef8
AL		 1666 if (size > 0) {
1667 qemu_send_packet(s->vc, buf, size);
1668 }
1669}
1670
4f1c942b 1671static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1672{
e3f5ec2b 1673 VDEState *s = vc->opaque;
068daedd 1674 ssize_t ret;
4f1c942b
MM		 1675
1676 do {
1677 ret = vde_send(s->vde, (const char *)buf, size, 0);
1678 } while (ret < 0 && errno == EINTR);
1679
1680 return ret;
63a01ef8
AL		 1681}
1682
b946a153
AL		 1683static void vde_cleanup(VLANClientState *vc)
1684{
1685 VDEState *s = vc->opaque;
1686 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1687 vde_close(s->vde);
1688 qemu_free(s);
1689}
1690
7a9f6e4a
AL		 1691static int net_vde_init(VLANState *vlan, const char *model,
1692 const char *name, const char *sock,
bf38c1a0 1693 int port, const char *group, int mode)
63a01ef8
AL		 1694{
1695 VDEState *s;
1696 char *init_group = strlen(group) ? (char *)group : NULL;
1697 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1698
1699 struct vde_open_args args = {
1700 .port = port,
1701 .group = init_group,
1702 .mode = mode,
1703 };
1704
1705 s = qemu_mallocz(sizeof(VDEState));
cc63bb0f 1706 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
63a01ef8
AL		 1707 if (!s->vde){
1708 free(s);
1709 return -1;
1710 }
e3f5ec2b 1711 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
b946a153 1712 NULL, vde_cleanup, s);
63a01ef8 1713 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
7cb7434b 1714 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
63a01ef8
AL		 1715 sock, vde_datafd(s->vde));
1716 return 0;
1717}
1718#endif
1719
1720/* network connection */
1721typedef struct NetSocketState {
1722 VLANClientState *vc;
1723 int fd;
1724 int state; /* 0 = getting length, 1 = getting data */
abcd2baa
AL		 1725 unsigned int index;
1726 unsigned int packet_len;
63a01ef8
AL		 1727 uint8_t buf[4096];
1728 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1729} NetSocketState;
1730
1731typedef struct NetSocketListenState {
1732 VLANState *vlan;
bf38c1a0 1733 char *model;
7a9f6e4a 1734 char *name;
63a01ef8
AL		 1735 int fd;
1736} NetSocketListenState;
1737
1738/* XXX: we consider we can send the whole packet without blocking */
4f1c942b 1739static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1740{
e3f5ec2b 1741 NetSocketState *s = vc->opaque;
63a01ef8
AL		 1742 uint32_t len;
1743 len = htonl(size);
1744
1745 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
4f1c942b 1746 return send_all(s->fd, buf, size);
63a01ef8
AL		 1747}
1748
4f1c942b 1749static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1750{
e3f5ec2b 1751 NetSocketState *s = vc->opaque;
4f1c942b 1752
70503264 1753 return sendto(s->fd, (const void *)buf, size, 0,
4f1c942b 1754 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
63a01ef8
AL		 1755}
1756
1757static void net_socket_send(void *opaque)
1758{
1759 NetSocketState *s = opaque;
abcd2baa
AL		 1760 int size, err;
1761 unsigned l;
63a01ef8
AL		 1762 uint8_t buf1[4096];
1763 const uint8_t *buf;
1764
c5b76b38 1765 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
63a01ef8
AL		 1766 if (size < 0) {
1767 err = socket_error();
1768 if (err != EWOULDBLOCK)
1769 goto eoc;
1770 } else if (size == 0) {
1771 /* end of connection */
1772 eoc:
1773 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1774 closesocket(s->fd);
1775 return;
1776 }
1777 buf = buf1;
1778 while (size > 0) {
1779 /* reassemble a packet from the network */
1780 switch(s->state) {
1781 case 0:
1782 l = 4 - s->index;
1783 if (l > size)
1784 l = size;
1785 memcpy(s->buf + s->index, buf, l);
1786 buf += l;
1787 size -= l;
1788 s->index += l;
1789 if (s->index == 4) {
1790 /* got length */
1791 s->packet_len = ntohl(*(uint32_t *)s->buf);
1792 s->index = 0;
1793 s->state = 1;
1794 }
1795 break;
1796 case 1:
1797 l = s->packet_len - s->index;
1798 if (l > size)
1799 l = size;
abcd2baa
AL		 1800 if (s->index + l <= sizeof(s->buf)) {
1801 memcpy(s->buf + s->index, buf, l);
1802 } else {
1803 fprintf(stderr, "serious error: oversized packet received,"
1804 "connection terminated.\n");
1805 s->state = 0;
1806 goto eoc;
1807 }
1808
63a01ef8
AL		 1809 s->index += l;
1810 buf += l;
1811 size -= l;
1812 if (s->index >= s->packet_len) {
1813 qemu_send_packet(s->vc, s->buf, s->packet_len);
1814 s->index = 0;
1815 s->state = 0;
1816 }
1817 break;
1818 }
1819 }
1820}
1821
1822static void net_socket_send_dgram(void *opaque)
1823{
1824 NetSocketState *s = opaque;
1825 int size;
1826
c5b76b38 1827 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
63a01ef8
AL		 1828 if (size < 0)
1829 return;
1830 if (size == 0) {
1831 /* end of connection */
1832 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1833 return;
1834 }
1835 qemu_send_packet(s->vc, s->buf, size);
1836}
1837
1838static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1839{
1840 struct ip_mreq imr;
1841 int fd;
1842 int val, ret;
1843 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1844 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1845 inet_ntoa(mcastaddr->sin_addr),
1846 (int)ntohl(mcastaddr->sin_addr.s_addr));
1847 return -1;
1848
1849 }
1850 fd = socket(PF_INET, SOCK_DGRAM, 0);
1851 if (fd < 0) {
1852 perror("socket(PF_INET, SOCK_DGRAM)");
1853 return -1;
1854 }
1855
1856 val = 1;
1857 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1858 (const char *)&val, sizeof(val));
1859 if (ret < 0) {
1860 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1861 goto fail;
1862 }
1863
1864 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1865 if (ret < 0) {
1866 perror("bind");
1867 goto fail;
1868 }
1869
1870 /* Add host to multicast group */
1871 imr.imr_multiaddr = mcastaddr->sin_addr;
1872 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1873
1874 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1875 (const char *)&imr, sizeof(struct ip_mreq));
1876 if (ret < 0) {
1877 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1878 goto fail;
1879 }
1880
1881 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1882 val = 1;
1883 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1884 (const char *)&val, sizeof(val));
1885 if (ret < 0) {
1886 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1887 goto fail;
1888 }
1889
1890 socket_set_nonblock(fd);
1891 return fd;
1892fail:
1893 if (fd >= 0)
1894 closesocket(fd);
1895 return -1;
1896}
1897
b946a153
AL		 1898static void net_socket_cleanup(VLANClientState *vc)
1899{
1900 NetSocketState *s = vc->opaque;
1901 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1902 close(s->fd);
1903 qemu_free(s);
1904}
1905
7a9f6e4a
AL		 1906static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1907 const char *model,
1908 const char *name,
bf38c1a0 1909 int fd, int is_connected)
63a01ef8
AL		 1910{
1911 struct sockaddr_in saddr;
1912 int newfd;
1913 socklen_t saddr_len;
1914 NetSocketState *s;
1915
1916 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1917 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1918 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1919 */
1920
1921 if (is_connected) {
1922 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1923 /* must be bound */
1924 if (saddr.sin_addr.s_addr==0) {
1925 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1926 fd);
1927 return NULL;
1928 }
1929 /* clone dgram socket */
1930 newfd = net_socket_mcast_create(&saddr);
1931 if (newfd < 0) {
1932 /* error already reported by net_socket_mcast_create() */
1933 close(fd);
1934 return NULL;
1935 }
1936 /* clone newfd to fd, close newfd */
1937 dup2(newfd, fd);
1938 close(newfd);
1939
1940 } else {
1941 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1942 fd, strerror(errno));
1943 return NULL;
1944 }
1945 }
1946
1947 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8
AL		 1948 s->fd = fd;
1949
463af534 1950 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
b946a153 1951 NULL, net_socket_cleanup, s);
63a01ef8
AL		 1952 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1953
1954 /* mcast: save bound address as dst */
1955 if (is_connected) s->dgram_dst=saddr;
1956
1957 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1958 "socket: fd=%d (%s mcast=%s:%d)",
1959 fd, is_connected? "cloned" : "",
1960 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1961 return s;
1962}
1963
1964static void net_socket_connect(void *opaque)
1965{
1966 NetSocketState *s = opaque;
1967 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1968}
1969
7a9f6e4a
AL		 1970static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
1971 const char *model,
1972 const char *name,
bf38c1a0 1973 int fd, int is_connected)
63a01ef8
AL		 1974{
1975 NetSocketState *s;
1976 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8 1977 s->fd = fd;
463af534 1978 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
b946a153 1979 NULL, net_socket_cleanup, s);
63a01ef8
AL		 1980 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1981 "socket: fd=%d", fd);
1982 if (is_connected) {
1983 net_socket_connect(s);
1984 } else {
1985 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1986 }
1987 return s;
1988}
1989
7a9f6e4a
AL		 1990static NetSocketState *net_socket_fd_init(VLANState *vlan,
1991 const char *model, const char *name,
bf38c1a0 1992 int fd, int is_connected)
63a01ef8
AL		 1993{
1994 int so_type=-1, optlen=sizeof(so_type);
1995
1996 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
1997 (socklen_t *)&optlen)< 0) {
1998 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
1999 return NULL;
2000 }
2001 switch(so_type) {
2002 case SOCK_DGRAM:
7a9f6e4a 2003 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
63a01ef8 2004 case SOCK_STREAM:
7a9f6e4a 2005 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2006 default:
2007 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2008 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
7a9f6e4a 2009 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2010 }
2011 return NULL;
2012}
2013
2014static void net_socket_accept(void *opaque)
2015{
2016 NetSocketListenState *s = opaque;
2017 NetSocketState *s1;
2018 struct sockaddr_in saddr;
2019 socklen_t len;
2020 int fd;
2021
2022 for(;;) {
2023 len = sizeof(saddr);
2024 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2025 if (fd < 0 && errno != EINTR) {
2026 return;
2027 } else if (fd >= 0) {
2028 break;
2029 }
2030 }
7a9f6e4a 2031 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
63a01ef8
AL		 2032 if (!s1) {
2033 closesocket(fd);
2034 } else {
2035 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2036 "socket: connection from %s:%d",
2037 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2038 }
2039}
2040
7a9f6e4a
AL		 2041static int net_socket_listen_init(VLANState *vlan,
2042 const char *model,
2043 const char *name,
bf38c1a0 2044 const char *host_str)
63a01ef8
AL		 2045{
2046 NetSocketListenState *s;
2047 int fd, val, ret;
2048 struct sockaddr_in saddr;
2049
2050 if (parse_host_port(&saddr, host_str) < 0)
2051 return -1;
2052
2053 s = qemu_mallocz(sizeof(NetSocketListenState));
63a01ef8
AL		 2054
2055 fd = socket(PF_INET, SOCK_STREAM, 0);
2056 if (fd < 0) {
2057 perror("socket");
2058 return -1;
2059 }
2060 socket_set_nonblock(fd);
2061
2062 /* allow fast reuse */
2063 val = 1;
2064 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2065
2066 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2067 if (ret < 0) {
2068 perror("bind");
2069 return -1;
2070 }
2071 ret = listen(fd, 0);
2072 if (ret < 0) {
2073 perror("listen");
2074 return -1;
2075 }
2076 s->vlan = vlan;
bf38c1a0 2077 s->model = strdup(model);
ea053add 2078 s->name = name ? strdup(name) : NULL;
63a01ef8
AL		 2079 s->fd = fd;
2080 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2081 return 0;
2082}
2083
7a9f6e4a
AL		 2084static int net_socket_connect_init(VLANState *vlan,
2085 const char *model,
2086 const char *name,
bf38c1a0 2087 const char *host_str)
63a01ef8
AL		 2088{
2089 NetSocketState *s;
2090 int fd, connected, ret, err;
2091 struct sockaddr_in saddr;
2092
2093 if (parse_host_port(&saddr, host_str) < 0)
2094 return -1;
2095
2096 fd = socket(PF_INET, SOCK_STREAM, 0);
2097 if (fd < 0) {
2098 perror("socket");
2099 return -1;
2100 }
2101 socket_set_nonblock(fd);
2102
2103 connected = 0;
2104 for(;;) {
2105 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2106 if (ret < 0) {
2107 err = socket_error();
2108 if (err == EINTR || err == EWOULDBLOCK) {
2109 } else if (err == EINPROGRESS) {
2110 break;
2111#ifdef _WIN32
2112 } else if (err == WSAEALREADY) {
2113 break;
2114#endif
2115 } else {
2116 perror("connect");
2117 closesocket(fd);
2118 return -1;
2119 }
2120 } else {
2121 connected = 1;
2122 break;
2123 }
2124 }
7a9f6e4a 2125 s = net_socket_fd_init(vlan, model, name, fd, connected);
63a01ef8
AL		 2126 if (!s)
2127 return -1;
2128 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2129 "socket: connect to %s:%d",
2130 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2131 return 0;
2132}
2133
7a9f6e4a
AL		 2134static int net_socket_mcast_init(VLANState *vlan,
2135 const char *model,
2136 const char *name,
bf38c1a0 2137 const char *host_str)
63a01ef8
AL		 2138{
2139 NetSocketState *s;
2140 int fd;
2141 struct sockaddr_in saddr;
2142
2143 if (parse_host_port(&saddr, host_str) < 0)
2144 return -1;
2145
2146
2147 fd = net_socket_mcast_create(&saddr);
2148 if (fd < 0)
2149 return -1;
2150
7a9f6e4a 2151 s = net_socket_fd_init(vlan, model, name, fd, 0);
63a01ef8
AL		 2152 if (!s)
2153 return -1;
2154
2155 s->dgram_dst = saddr;
2156
2157 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2158 "socket: mcast=%s:%d",
2159 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2160 return 0;
2161
2162}
2163
bb9ea79e
AL		 2164typedef struct DumpState {
2165 VLANClientState *pcap_vc;
2166 int fd;
2167 int pcap_caplen;
2168} DumpState;
2169
2170#define PCAP_MAGIC 0xa1b2c3d4
2171
2172struct pcap_file_hdr {
2173 uint32_t magic;
2174 uint16_t version_major;
2175 uint16_t version_minor;
2176 int32_t thiszone;
2177 uint32_t sigfigs;
2178 uint32_t snaplen;
2179 uint32_t linktype;
2180};
2181
2182struct pcap_sf_pkthdr {
2183 struct {
2184 int32_t tv_sec;
2185 int32_t tv_usec;
2186 } ts;
2187 uint32_t caplen;
2188 uint32_t len;
2189};
2190
4f1c942b 2191static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
bb9ea79e 2192{
e3f5ec2b 2193 DumpState *s = vc->opaque;
bb9ea79e
AL		 2194 struct pcap_sf_pkthdr hdr;
2195 int64_t ts;
2196 int caplen;
2197
2198 /* Early return in case of previous error. */
2199 if (s->fd < 0) {
4f1c942b 2200 return size;
bb9ea79e
AL		 2201 }
2202
37cb6fc3 2203 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
bb9ea79e
AL		 2204 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2205
37cb6fc3 2206 hdr.ts.tv_sec = ts / 1000000;
bb9ea79e
AL		 2207 hdr.ts.tv_usec = ts % 1000000;
2208 hdr.caplen = caplen;
2209 hdr.len = size;
2210 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2211 write(s->fd, buf, caplen) != caplen) {
2212 qemu_log("-net dump write error - stop dump\n");
2213 close(s->fd);
2214 s->fd = -1;
2215 }
4f1c942b
MM		 2216
2217 return size;
bb9ea79e
AL		 2218}
2219
2220static void net_dump_cleanup(VLANClientState *vc)
2221{
2222 DumpState *s = vc->opaque;
2223
2224 close(s->fd);
2225 qemu_free(s);
2226}
2227
10ae5a7a 2228static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
bb9ea79e
AL		 2229 const char *name, const char *filename, int len)
2230{
2231 struct pcap_file_hdr hdr;
2232 DumpState *s;
2233
2234 s = qemu_malloc(sizeof(DumpState));
2235
024431b3 2236 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
bb9ea79e 2237 if (s->fd < 0) {
10ae5a7a 2238 config_error(mon, "-net dump: can't open %s\n", filename);
bb9ea79e
AL		 2239 return -1;
2240 }
2241
2242 s->pcap_caplen = len;
2243
2244 hdr.magic = PCAP_MAGIC;
2245 hdr.version_major = 2;
2246 hdr.version_minor = 4;
2247 hdr.thiszone = 0;
2248 hdr.sigfigs = 0;
2249 hdr.snaplen = s->pcap_caplen;
2250 hdr.linktype = 1;
2251
2252 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
10ae5a7a 2253 config_error(mon, "-net dump write error: %s\n", strerror(errno));
bb9ea79e
AL		 2254 close(s->fd);
2255 qemu_free(s);
2256 return -1;
2257 }
2258
463af534 2259 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
bb9ea79e
AL		 2260 net_dump_cleanup, s);
2261 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2262 "dump to %s (len=%d)", filename, len);
2263 return 0;
2264}
2265
63a01ef8
AL		 2266/* find or alloc a new VLAN */
2267VLANState *qemu_find_vlan(int id)
2268{
2269 VLANState **pvlan, *vlan;
2270 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2271 if (vlan->id == id)
2272 return vlan;
2273 }
2274 vlan = qemu_mallocz(sizeof(VLANState));
63a01ef8
AL		 2275 vlan->id = id;
2276 vlan->next = NULL;
2277 pvlan = &first_vlan;
2278 while (*pvlan != NULL)
2279 pvlan = &(*pvlan)->next;
2280 *pvlan = vlan;
2281 return vlan;
2282}
2283
7697079b
AL		 2284static int nic_get_free_idx(void)
2285{
2286 int index;
2287
2288 for (index = 0; index < MAX_NICS; index++)
2289 if (!nd_table[index].used)
2290 return index;
2291 return -1;
2292}
2293
d07f22c5
AL		 2294void qemu_check_nic_model(NICInfo *nd, const char *model)
2295{
2296 const char *models[2];
2297
2298 models[0] = model;
2299 models[1] = NULL;
2300
2301 qemu_check_nic_model_list(nd, models, model);
2302}
2303
2304void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2305 const char *default_model)
2306{
2307 int i, exit_status = 0;
2308
2309 if (!nd->model)
2310 nd->model = strdup(default_model);
2311
2312 if (strcmp(nd->model, "?") != 0) {
2313 for (i = 0 ; models[i]; i++)
2314 if (strcmp(nd->model, models[i]) == 0)
2315 return;
2316
2317 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2318 exit_status = 1;
2319 }
2320
2321 fprintf(stderr, "qemu: Supported NIC models: ");
2322 for (i = 0 ; models[i]; i++)
2323 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2324
2325 exit(exit_status);
2326}
2327
10ae5a7a 2328int net_client_init(Monitor *mon, const char *device, const char *p)
63a01ef8
AL		 2329{
2330 char buf[1024];
2331 int vlan_id, ret;
2332 VLANState *vlan;
7a9f6e4a 2333 char *name = NULL;
63a01ef8
AL		 2334
2335 vlan_id = 0;
2336 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2337 vlan_id = strtol(buf, NULL, 0);
2338 }
2339 vlan = qemu_find_vlan(vlan_id);
9036de1a 2340
7a9f6e4a 2341 if (get_param_value(buf, sizeof(buf), "name", p)) {
10ae5a7a 2342 name = qemu_strdup(buf);
7a9f6e4a 2343 }
63a01ef8 2344 if (!strcmp(device, "nic")) {
8e4416af 2345 static const char * const nic_params[] = {
ffe6370c 2346 "vlan", "name", "macaddr", "model", "addr", "vectors", NULL
8e4416af 2347 };
63a01ef8
AL		 2348 NICInfo *nd;
2349 uint8_t *macaddr;
7697079b 2350 int idx = nic_get_free_idx();
63a01ef8 2351
0aa7a205 2352 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
10ae5a7a
JK		 2353 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2354 ret = -1;
2355 goto out;
8e4416af 2356 }
7697079b 2357 if (idx == -1 || nb_nics >= MAX_NICS) {
10ae5a7a 2358 config_error(mon, "Too Many NICs\n");
771f1339
AL		 2359 ret = -1;
2360 goto out;
63a01ef8 2361 }
7697079b 2362 nd = &nd_table[idx];
63a01ef8
AL		 2363 macaddr = nd->macaddr;
2364 macaddr[0] = 0x52;
2365 macaddr[1] = 0x54;
2366 macaddr[2] = 0x00;
2367 macaddr[3] = 0x12;
2368 macaddr[4] = 0x34;
7697079b 2369 macaddr[5] = 0x56 + idx;
63a01ef8
AL		 2370
2371 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2372 if (parse_macaddr(macaddr, buf) < 0) {
10ae5a7a 2373 config_error(mon, "invalid syntax for ethernet address\n");
771f1339
AL		 2374 ret = -1;
2375 goto out;
63a01ef8
AL		 2376 }
2377 }
2378 if (get_param_value(buf, sizeof(buf), "model", p)) {
2379 nd->model = strdup(buf);
2380 }
5607c388
MA		 2381 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2382 nd->devaddr = strdup(buf);
2383 }
ffe6370c
MT		 2384 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2385 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2386 char *endptr;
2387 long vectors = strtol(buf, &endptr, 0);
2388 if (*endptr) {
2389 config_error(mon, "invalid syntax for # of vectors\n");
2390 ret = -1;
2391 goto out;
2392 }
2393 if (vectors < 0 || vectors > 0x7ffffff) {
2394 config_error(mon, "invalid # of vectors\n");
2395 ret = -1;
2396 goto out;
2397 }
2398 nd->nvectors = vectors;
2399 }
63a01ef8 2400 nd->vlan = vlan;
7a9f6e4a 2401 nd->name = name;
7697079b 2402 nd->used = 1;
7a9f6e4a 2403 name = NULL;
63a01ef8
AL		 2404 nb_nics++;
2405 vlan->nb_guest_devs++;
4d73cd3b 2406 ret = idx;
63a01ef8
AL		 2407 } else
2408 if (!strcmp(device, "none")) {
8e4416af 2409 if (*p != '\0') {
10ae5a7a
JK		 2410 config_error(mon, "'none' takes no parameters\n");
2411 ret = -1;
2412 goto out;
8e4416af 2413 }
63a01ef8
AL		 2414 /* does nothing. It is needed to signal that no network cards
2415 are wanted */
2416 ret = 0;
2417 } else
2418#ifdef CONFIG_SLIRP
2419 if (!strcmp(device, "user")) {
8e4416af 2420 static const char * const slirp_params[] = {
c92ef6a2
JK		 2421 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2422 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2423 "hostfwd", "guestfwd", NULL
8e4416af 2424 };
ad196a9d 2425 struct slirp_config_str *config;
c92ef6a2
JK		 2426 int restricted = 0;
2427 char *vnet = NULL;
2428 char *vhost = NULL;
2429 char *vhostname = NULL;
ad196a9d
JK		 2430 char *tftp_export = NULL;
2431 char *bootfile = NULL;
c92ef6a2
JK		 2432 char *vdhcp_start = NULL;
2433 char *vnamesrv = NULL;
ad196a9d 2434 char *smb_export = NULL;
c92ef6a2 2435 char *vsmbsrv = NULL;
ad196a9d 2436 const char *q;
b8e8af38 2437
0aa7a205 2438 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
10ae5a7a
JK		 2439 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2440 ret = -1;
2441 goto out;
8e4416af 2442 }
c92ef6a2
JK		 2443 if (get_param_value(buf, sizeof(buf), "ip", p)) {
2444 /* emulate legacy parameter */
2445 vnet = qemu_malloc(strlen(buf) + strlen("/24") + 1);
2446 strcpy(vnet, buf);
2447 strcat(vnet, "/24");
2448 }
2449 if (get_param_value(buf, sizeof(buf), "net", p)) {
2450 vnet = qemu_strdup(buf);
2451 }
2452 if (get_param_value(buf, sizeof(buf), "host", p)) {
2453 vhost = qemu_strdup(buf);
2454 }
63a01ef8 2455 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
c92ef6a2 2456 vhostname = qemu_strdup(buf);
63a01ef8 2457 }
49ec9b40 2458 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
b8e8af38 2459 restricted = (buf[0] == 'y') ? 1 : 0;
49ec9b40 2460 }
c92ef6a2
JK		 2461 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2462 vdhcp_start = qemu_strdup(buf);
2463 }
2464 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2465 vnamesrv = qemu_strdup(buf);
49ec9b40 2466 }
ad196a9d
JK		 2467 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2468 tftp_export = qemu_strdup(buf);
2469 }
2470 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2471 bootfile = qemu_strdup(buf);
2472 }
2473 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2474 smb_export = qemu_strdup(buf);
c92ef6a2
JK		 2475 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2476 vsmbsrv = qemu_strdup(buf);
2477 }
ad196a9d
JK		 2478 }
2479 q = p;
2480 while (1) {
2481 config = qemu_malloc(sizeof(*config));
2482 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2483 "hostfwd", &q)) {
ad196a9d
JK		 2484 break;
2485 }
c92ef6a2 2486 config->flags = SLIRP_CFG_HOSTFWD;
ad196a9d
JK		 2487 config->next = slirp_configs;
2488 slirp_configs = config;
2489 config = NULL;
2490 }
2491 q = p;
2492 while (1) {
2493 config = qemu_malloc(sizeof(*config));
2494 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2495 "guestfwd", &q)) {
ad196a9d
JK		 2496 break;
2497 }
2498 config->flags = 0;
2499 config->next = slirp_configs;
2500 slirp_configs = config;
2501 config = NULL;
2502 }
2503 qemu_free(config);
63a01ef8 2504 vlan->nb_host_devs++;
c92ef6a2
JK		 2505 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2506 vhostname, tftp_export, bootfile, vdhcp_start,
2507 vnamesrv, smb_export, vsmbsrv);
2508 qemu_free(vnet);
2509 qemu_free(vhost);
2510 qemu_free(vhostname);
ad196a9d
JK		 2511 qemu_free(tftp_export);
2512 qemu_free(bootfile);
c92ef6a2
JK		 2513 qemu_free(vdhcp_start);
2514 qemu_free(vnamesrv);
ad196a9d 2515 qemu_free(smb_export);
c92ef6a2 2516 qemu_free(vsmbsrv);
8ca9217d 2517 } else if (!strcmp(device, "channel")) {
9f8bd042 2518 if (!slirp_state) {
ad196a9d
JK		 2519 struct slirp_config_str *config;
2520
2521 config = qemu_malloc(sizeof(*config));
2522 pstrcpy(config->str, sizeof(config->str), p);
c92ef6a2 2523 config->flags = SLIRP_CFG_LEGACY;
ad196a9d
JK		 2524 config->next = slirp_configs;
2525 slirp_configs = config;
2526 } else {
9f8bd042 2527 slirp_guestfwd(slirp_state, mon, p, 1);
8ca9217d 2528 }
8ca9217d 2529 ret = 0;
63a01ef8
AL		 2530 } else
2531#endif
2532#ifdef _WIN32
2533 if (!strcmp(device, "tap")) {
8e4416af
AL		 2534 static const char * const tap_params[] = {
2535 "vlan", "name", "ifname", NULL
2536 };
63a01ef8 2537 char ifname[64];
8e4416af 2538
0aa7a205 2539 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
10ae5a7a
JK		 2540 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2541 ret = -1;
2542 goto out;
8e4416af 2543 }
63a01ef8 2544 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
10ae5a7a 2545 config_error(mon, "tap: no interface name\n");
771f1339
AL		 2546 ret = -1;
2547 goto out;
63a01ef8
AL		 2548 }
2549 vlan->nb_host_devs++;
7a9f6e4a 2550 ret = tap_win32_init(vlan, device, name, ifname);
63a01ef8 2551 } else
b29fe3ed 2552#elif defined (_AIX)
63a01ef8
AL		 2553#else
2554 if (!strcmp(device, "tap")) {
0aa7a205 2555 char ifname[64], chkbuf[64];
63a01ef8 2556 char setup_script[1024], down_script[1024];
4a77b25e 2557 TAPState *s;
63a01ef8
AL		 2558 int fd;
2559 vlan->nb_host_devs++;
2560 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2561 static const char * const fd_params[] = {
2562 "vlan", "name", "fd", "sndbuf", NULL
2563 };
0aa7a205 2564 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a
JK		 2565 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2566 ret = -1;
2567 goto out;
8e4416af 2568 }
63a01ef8
AL		 2569 fd = strtol(buf, NULL, 0);
2570 fcntl(fd, F_SETFL, O_NONBLOCK);
4a77b25e 2571 s = net_tap_fd_init(vlan, device, name, fd);
63a01ef8 2572 } else {
8e4416af 2573 static const char * const tap_params[] = {
0df0ff6d 2574 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
8e4416af 2575 };
0aa7a205 2576 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
10ae5a7a
JK		 2577 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2578 ret = -1;
2579 goto out;
8e4416af 2580 }
63a01ef8
AL		 2581 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2582 ifname[0] = '\0';
2583 }
2584 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2585 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2586 }
2587 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2588 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2589 }
4a77b25e
MM		 2590 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2591 }
2592 if (s != NULL) {
0df0ff6d
MM		 2593 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
2594 tap_set_sndbuf(s, atoi(buf), mon);
2595 }
4a77b25e
MM		 2596 ret = 0;
2597 } else {
2598 ret = -1;
63a01ef8
AL		 2599 }
2600 } else
2601#endif
2602 if (!strcmp(device, "socket")) {
0aa7a205 2603 char chkbuf[64];
63a01ef8 2604 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2605 static const char * const fd_params[] = {
2606 "vlan", "name", "fd", NULL
2607 };
63a01ef8 2608 int fd;
0aa7a205 2609 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a
JK		 2610 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2611 ret = -1;
2612 goto out;
8e4416af 2613 }
63a01ef8
AL		 2614 fd = strtol(buf, NULL, 0);
2615 ret = -1;
7a9f6e4a 2616 if (net_socket_fd_init(vlan, device, name, fd, 1))
63a01ef8
AL		 2617 ret = 0;
2618 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
8e4416af
AL		 2619 static const char * const listen_params[] = {
2620 "vlan", "name", "listen", NULL
2621 };
0aa7a205 2622 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
10ae5a7a
JK		 2623 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2624 ret = -1;
2625 goto out;
8e4416af 2626 }
7a9f6e4a 2627 ret = net_socket_listen_init(vlan, device, name, buf);
63a01ef8 2628 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
8e4416af
AL		 2629 static const char * const connect_params[] = {
2630 "vlan", "name", "connect", NULL
2631 };
0aa7a205 2632 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
10ae5a7a
JK		 2633 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2634 ret = -1;
2635 goto out;
8e4416af 2636 }
7a9f6e4a 2637 ret = net_socket_connect_init(vlan, device, name, buf);
63a01ef8 2638 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
8e4416af
AL		 2639 static const char * const mcast_params[] = {
2640 "vlan", "name", "mcast", NULL
2641 };
0aa7a205 2642 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
10ae5a7a
JK		 2643 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2644 ret = -1;
2645 goto out;
8e4416af 2646 }
7a9f6e4a 2647 ret = net_socket_mcast_init(vlan, device, name, buf);
63a01ef8 2648 } else {
10ae5a7a 2649 config_error(mon, "Unknown socket options: %s\n", p);
771f1339
AL		 2650 ret = -1;
2651 goto out;
63a01ef8
AL		 2652 }
2653 vlan->nb_host_devs++;
2654 } else
2655#ifdef CONFIG_VDE
2656 if (!strcmp(device, "vde")) {
8e4416af
AL		 2657 static const char * const vde_params[] = {
2658 "vlan", "name", "sock", "port", "group", "mode", NULL
2659 };
63a01ef8
AL		 2660 char vde_sock[1024], vde_group[512];
2661 int vde_port, vde_mode;
8e4416af 2662
0aa7a205 2663 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
10ae5a7a
JK		 2664 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2665 ret = -1;
2666 goto out;
8e4416af 2667 }
63a01ef8
AL		 2668 vlan->nb_host_devs++;
2669 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2670 vde_sock[0] = '\0';
2671 }
2672 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2673 vde_port = strtol(buf, NULL, 10);
2674 } else {
2675 vde_port = 0;
2676 }
2677 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2678 vde_group[0] = '\0';
2679 }
2680 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2681 vde_mode = strtol(buf, NULL, 8);
2682 } else {
2683 vde_mode = 0700;
2684 }
7a9f6e4a 2685 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
63a01ef8
AL		 2686 } else
2687#endif
bb9ea79e
AL		 2688 if (!strcmp(device, "dump")) {
2689 int len = 65536;
2690
2691 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2692 len = strtol(buf, NULL, 0);
2693 }
2694 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2695 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2696 }
10ae5a7a 2697 ret = net_dump_init(mon, vlan, device, name, buf, len);
bb9ea79e 2698 } else {
10ae5a7a 2699 config_error(mon, "Unknown network device: %s\n", device);
771f1339
AL		 2700 ret = -1;
2701 goto out;
63a01ef8
AL		 2702 }
2703 if (ret < 0) {
10ae5a7a 2704 config_error(mon, "Could not initialize device '%s'\n", device);
63a01ef8 2705 }
771f1339 2706out:
10ae5a7a 2707 qemu_free(name);
63a01ef8
AL		 2708 return ret;
2709}
2710
8b13c4a7
AL		 2711void net_client_uninit(NICInfo *nd)
2712{
2713 nd->vlan->nb_guest_devs--;
2714 nb_nics--;
2715 nd->used = 0;
2716 free((void *)nd->model);
2717}
2718
6f338c34
AL		 2719static int net_host_check_device(const char *device)
2720{
2721 int i;
bb9ea79e 2722 const char *valid_param_list[] = { "tap", "socket", "dump"
6f338c34
AL		 2723#ifdef CONFIG_SLIRP
2724 ,"user"
2725#endif
2726#ifdef CONFIG_VDE
2727 ,"vde"
2728#endif
2729 };
2730 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2731 if (!strncmp(valid_param_list[i], device,
2732 strlen(valid_param_list[i])))
2733 return 1;
2734 }
2735
2736 return 0;
2737}
2738
376253ec 2739void net_host_device_add(Monitor *mon, const char *device, const char *opts)
6f338c34
AL		 2740{
2741 if (!net_host_check_device(device)) {
376253ec 2742 monitor_printf(mon, "invalid host network device %s\n", device);
6f338c34
AL		 2743 return;
2744 }
10ae5a7a 2745 if (net_client_init(mon, device, opts ? opts : "") < 0) {
5c8be678
AL		 2746 monitor_printf(mon, "adding host network device %s failed\n", device);
2747 }
6f338c34
AL		 2748}
2749
376253ec 2750void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
6f338c34
AL		 2751{
2752 VLANState *vlan;
2753 VLANClientState *vc;
2754
6f338c34 2755 vlan = qemu_find_vlan(vlan_id);
6f338c34 2756
e8f1f9db
AL		 2757 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
2758 if (!strcmp(vc->name, device)) {
6f338c34 2759 break;
e8f1f9db
AL		 2760 }
2761 }
6f338c34
AL		 2762
2763 if (!vc) {
376253ec 2764 monitor_printf(mon, "can't find device %s\n", device);
6f338c34
AL		 2765 return;
2766 }
e8f1f9db
AL		 2767 if (!net_host_check_device(vc->model)) {
2768 monitor_printf(mon, "invalid host network device %s\n", device);
2769 return;
2770 }
6f338c34
AL		 2771 qemu_del_vlan_client(vc);
2772}
2773
63a01ef8
AL		 2774int net_client_parse(const char *str)
2775{
2776 const char *p;
2777 char *q;
2778 char device[64];
2779
2780 p = str;
2781 q = device;
2782 while (*p != '\0' && *p != ',') {
2783 if ((q - device) < sizeof(device) - 1)
2784 *q++ = *p;
2785 p++;
2786 }
2787 *q = '\0';
2788 if (*p == ',')
2789 p++;
2790
10ae5a7a 2791 return net_client_init(NULL, device, p);
63a01ef8
AL		 2792}
2793
406c8df3
GC		 2794void net_set_boot_mask(int net_boot_mask)
2795{
2796 int i;
2797
2798 /* Only the first four NICs may be bootable */
2799 net_boot_mask = net_boot_mask & 0xF;
2800
2801 for (i = 0; i < nb_nics; i++) {
2802 if (net_boot_mask & (1 << i)) {
2803 nd_table[i].bootable = 1;
2804 net_boot_mask &= ~(1 << i);
2805 }
2806 }
2807
2808 if (net_boot_mask) {
2809 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2810 exit(1);
2811 }
2812}
2813
376253ec 2814void do_info_network(Monitor *mon)
63a01ef8
AL		 2815{
2816 VLANState *vlan;
2817 VLANClientState *vc;
2818
2819 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
376253ec 2820 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
63a01ef8 2821 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
376253ec 2822 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
63a01ef8
AL		 2823 }
2824}
2825
376253ec 2826int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
436e5e53
AL		 2827{
2828 VLANState *vlan;
2829 VLANClientState *vc = NULL;
2830
2831 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2832 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2833 if (strcmp(vc->name, name) == 0)
dd5de373
EI		 2834 goto done;
2835done:
436e5e53
AL		 2836
2837 if (!vc) {
376253ec 2838 monitor_printf(mon, "could not find network device '%s'", name);
436e5e53
AL		 2839 return 0;
2840 }
2841
2842 if (strcmp(up_or_down, "up") == 0)
2843 vc->link_down = 0;
2844 else if (strcmp(up_or_down, "down") == 0)
2845 vc->link_down = 1;
2846 else
376253ec
AL		 2847 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2848 "valid\n", up_or_down);
436e5e53 2849
34b25ca7
AL		 2850 if (vc->link_status_changed)
2851 vc->link_status_changed(vc);
2852
436e5e53
AL		 2853 return 1;
2854}
2855
63a01ef8
AL		 2856void net_cleanup(void)
2857{
2858 VLANState *vlan;
2859
63a01ef8
AL		 2860 /* close network clients */
2861 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
b946a153 2862 VLANClientState *vc = vlan->first_client;
63a01ef8 2863
b946a153
AL		 2864 while (vc) {
2865 VLANClientState *next = vc->next;
63a01ef8 2866
b946a153
AL		 2867 qemu_del_vlan_client(vc);
2868
2869 vc = next;
63a01ef8
AL		 2870 }
2871 }
63a01ef8
AL		 2872}
2873
2874void net_client_check(void)
2875{
2876 VLANState *vlan;
2877
2878 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2879 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2880 continue;
2881 if (vlan->nb_guest_devs == 0)
2882 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2883 if (vlan->nb_host_devs == 0)
2884 fprintf(stderr,
2885 "Warning: vlan %d is not connected to host network\n",
2886 vlan->id);
2887 }
2888}
Qemu copy for testing