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63a01ef8
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
63a01ef8
AL		 24#include <unistd.h>
25#include <fcntl.h>
26#include <signal.h>
27#include <time.h>
28#include <errno.h>
29#include <sys/time.h>
30#include <zlib.h>
31
71e72a19 32/* Needed early for CONFIG_BSD etc. */
d40cdb10
BS		 33#include "config-host.h"
34
63a01ef8
AL		 35#ifndef _WIN32
36#include <sys/times.h>
37#include <sys/wait.h>
38#include <termios.h>
39#include <sys/mman.h>
40#include <sys/ioctl.h>
24646c7e 41#include <sys/resource.h>
63a01ef8
AL		 42#include <sys/socket.h>
43#include <netinet/in.h>
24646c7e
BS		 44#include <net/if.h>
45#ifdef __NetBSD__
46#include <net/if_tap.h>
47#endif
48#ifdef __linux__
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"
511d2b14 113
d918f23e 114#include "slirp/libslirp.h"
511d2b14
BS		 115
116
63a01ef8
AL		 117static VLANState *first_vlan;
118
119/***********************************************************/
120/* network device redirectors */
121
122#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
123static void hex_dump(FILE *f, const uint8_t *buf, int size)
124{
125 int len, i, j, c;
126
127 for(i=0;i<size;i+=16) {
128 len = size - i;
129 if (len > 16)
130 len = 16;
131 fprintf(f, "%08x ", i);
132 for(j=0;j<16;j++) {
133 if (j < len)
134 fprintf(f, " %02x", buf[i+j]);
135 else
136 fprintf(f, " ");
137 }
138 fprintf(f, " ");
139 for(j=0;j<len;j++) {
140 c = buf[i+j];
141 if (c < ' ' || c > '~')
142 c = '.';
143 fprintf(f, "%c", c);
144 }
145 fprintf(f, "\n");
146 }
147}
148#endif
149
150static int parse_macaddr(uint8_t *macaddr, const char *p)
151{
152 int i;
153 char *last_char;
154 long int offset;
155
156 errno = 0;
157 offset = strtol(p, &last_char, 0);
158 if (0 == errno && '\0' == *last_char &&
159 offset >= 0 && offset <= 0xFFFFFF) {
160 macaddr[3] = (offset & 0xFF0000) >> 16;
161 macaddr[4] = (offset & 0xFF00) >> 8;
162 macaddr[5] = offset & 0xFF;
163 return 0;
164 } else {
165 for(i = 0; i < 6; i++) {
166 macaddr[i] = strtol(p, (char **)&p, 16);
167 if (i == 5) {
168 if (*p != '\0')
169 return -1;
170 } else {
171 if (*p != ':' && *p != '-')
172 return -1;
173 p++;
174 }
175 }
176 return 0;
177 }
178
179 return -1;
180}
181
182static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
183{
184 const char *p, *p1;
185 int len;
186 p = *pp;
187 p1 = strchr(p, sep);
188 if (!p1)
189 return -1;
190 len = p1 - p;
191 p1++;
192 if (buf_size > 0) {
193 if (len > buf_size - 1)
194 len = buf_size - 1;
195 memcpy(buf, p, len);
196 buf[len] = '\0';
197 }
198 *pp = p1;
199 return 0;
200}
201
202int parse_host_src_port(struct sockaddr_in *haddr,
203 struct sockaddr_in *saddr,
204 const char *input_str)
205{
206 char *str = strdup(input_str);
207 char *host_str = str;
208 char *src_str;
209 const char *src_str2;
210 char *ptr;
211
212 /*
213 * Chop off any extra arguments at the end of the string which
214 * would start with a comma, then fill in the src port information
215 * if it was provided else use the "any address" and "any port".
216 */
217 if ((ptr = strchr(str,',')))
218 *ptr = '\0';
219
220 if ((src_str = strchr(input_str,'@'))) {
221 *src_str = '\0';
222 src_str++;
223 }
224
225 if (parse_host_port(haddr, host_str) < 0)
226 goto fail;
227
228 src_str2 = src_str;
229 if (!src_str || *src_str == '\0')
230 src_str2 = ":0";
231
232 if (parse_host_port(saddr, src_str2) < 0)
233 goto fail;
234
235 free(str);
236 return(0);
237
238fail:
239 free(str);
240 return -1;
241}
242
243int parse_host_port(struct sockaddr_in *saddr, const char *str)
244{
245 char buf[512];
246 struct hostent *he;
247 const char *p, *r;
248 int port;
249
250 p = str;
251 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
252 return -1;
253 saddr->sin_family = AF_INET;
254 if (buf[0] == '\0') {
255 saddr->sin_addr.s_addr = 0;
256 } else {
cd390083 257 if (qemu_isdigit(buf[0])) {
63a01ef8
AL		 258 if (!inet_aton(buf, &saddr->sin_addr))
259 return -1;
260 } else {
261 if ((he = gethostbyname(buf)) == NULL)
262 return - 1;
263 saddr->sin_addr = *(struct in_addr *)he->h_addr;
264 }
265 }
266 port = strtol(p, (char **)&r, 0);
267 if (r == p)
268 return -1;
269 saddr->sin_port = htons(port);
270 return 0;
271}
272
7cb7434b
AL		 273void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
274{
275 snprintf(vc->info_str, sizeof(vc->info_str),
4dda4063
AL		 276 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
277 vc->model,
7cb7434b
AL		 278 macaddr[0], macaddr[1], macaddr[2],
279 macaddr[3], macaddr[4], macaddr[5]);
280}
281
676cff29
AL		 282static char *assign_name(VLANClientState *vc1, const char *model)
283{
284 VLANState *vlan;
285 char buf[256];
286 int id = 0;
287
288 for (vlan = first_vlan; vlan; vlan = vlan->next) {
289 VLANClientState *vc;
290
291 for (vc = vlan->first_client; vc; vc = vc->next)
292 if (vc != vc1 && strcmp(vc->model, model) == 0)
293 id++;
294 }
295
296 snprintf(buf, sizeof(buf), "%s.%d", model, id);
297
298 return strdup(buf);
299}
300
63a01ef8 301VLANClientState *qemu_new_vlan_client(VLANState *vlan,
bf38c1a0 302 const char *model,
7a9f6e4a 303 const char *name,
cda9046b
MM		 304 NetCanReceive *can_receive,
305 NetReceive *receive,
306 NetReceiveIOV *receive_iov,
b946a153 307 NetCleanup *cleanup,
63a01ef8
AL		 308 void *opaque)
309{
310 VLANClientState *vc, **pvc;
311 vc = qemu_mallocz(sizeof(VLANClientState));
bf38c1a0 312 vc->model = strdup(model);
7a9f6e4a
AL		 313 if (name)
314 vc->name = strdup(name);
315 else
316 vc->name = assign_name(vc, model);
cda9046b
MM		 317 vc->can_receive = can_receive;
318 vc->receive = receive;
319 vc->receive_iov = receive_iov;
b946a153 320 vc->cleanup = cleanup;
63a01ef8
AL		 321 vc->opaque = opaque;
322 vc->vlan = vlan;
323
324 vc->next = NULL;
325 pvc = &vlan->first_client;
326 while (*pvc != NULL)
327 pvc = &(*pvc)->next;
328 *pvc = vc;
329 return vc;
330}
331
332void qemu_del_vlan_client(VLANClientState *vc)
333{
334 VLANClientState **pvc = &vc->vlan->first_client;
335
336 while (*pvc != NULL)
337 if (*pvc == vc) {
338 *pvc = vc->next;
b946a153
AL		 339 if (vc->cleanup) {
340 vc->cleanup(vc);
341 }
676cff29 342 free(vc->name);
bf38c1a0 343 free(vc->model);
dad35419 344 qemu_free(vc);
63a01ef8
AL		 345 break;
346 } else
347 pvc = &(*pvc)->next;
348}
349
8b13c4a7
AL		 350VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
351{
352 VLANClientState **pvc = &vlan->first_client;
353
354 while (*pvc != NULL)
355 if ((*pvc)->opaque == opaque)
356 return *pvc;
357 else
358 pvc = &(*pvc)->next;
359
360 return NULL;
361}
362
1a609520
JK		 363static VLANClientState *
364qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
365 const char *client_str)
366{
367 VLANState *vlan;
368 VLANClientState *vc;
369
370 vlan = qemu_find_vlan(vlan_id, 0);
371 if (!vlan) {
372 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
373 return NULL;
374 }
375
376 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
377 if (!strcmp(vc->name, client_str)) {
378 break;
379 }
380 }
381 if (!vc) {
382 monitor_printf(mon, "can't find device %s on VLAN %d\n",
383 client_str, vlan_id);
384 }
385
386 return vc;
387}
388
2e1e0641 389int qemu_can_send_packet(VLANClientState *sender)
63a01ef8 390{
2e1e0641 391 VLANState *vlan = sender->vlan;
63a01ef8
AL		 392 VLANClientState *vc;
393
2e1e0641
MM		 394 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
395 if (vc == sender) {
396 continue;
397 }
398
cda9046b 399 /* no can_receive() handler, they can always receive */
e3f5ec2b 400 if (!vc->can_receive || vc->can_receive(vc)) {
2e1e0641 401 return 1;
63a01ef8
AL		 402 }
403 }
404 return 0;
405}
406
3e021d40 407static int
764a4d1d 408qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
63a01ef8 409{
63a01ef8 410 VLANClientState *vc;
3e021d40 411 int ret = -1;
63a01ef8 412
e94667b9
MM		 413 sender->vlan->delivering = 1;
414
764a4d1d 415 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
3e021d40
MM		 416 ssize_t len;
417
418 if (vc == sender) {
419 continue;
764a4d1d 420 }
3e021d40
MM		 421
422 if (vc->link_down) {
423 ret = size;
424 continue;
425 }
426
427 len = vc->receive(vc, buf, size);
428
429 ret = (ret >= 0) ? ret : len;
764a4d1d 430 }
3e021d40 431
e94667b9
MM		 432 sender->vlan->delivering = 0;
433
3e021d40 434 return ret;
764a4d1d
AL		 435}
436
8cad5516
MM		 437void qemu_purge_queued_packets(VLANClientState *vc)
438{
439 VLANPacket **pp = &vc->vlan->send_queue;
440
441 while (*pp != NULL) {
442 VLANPacket *packet = *pp;
443
444 if (packet->sender == vc) {
445 *pp = packet->next;
446 qemu_free(packet);
447 } else {
448 pp = &packet->next;
449 }
450 }
451}
452
f3b6c7fc 453void qemu_flush_queued_packets(VLANClientState *vc)
e94667b9
MM		 454{
455 VLANPacket *packet;
456
457 while ((packet = vc->vlan->send_queue) != NULL) {
f3b6c7fc
MM		 458 int ret;
459
e94667b9 460 vc->vlan->send_queue = packet->next;
f3b6c7fc
MM		 461
462 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
463 if (ret == 0 && packet->sent_cb != NULL) {
464 packet->next = vc->vlan->send_queue;
465 vc->vlan->send_queue = packet;
466 break;
467 }
468
469 if (packet->sent_cb)
783527a9 470 packet->sent_cb(packet->sender, ret);
f3b6c7fc 471
e94667b9
MM		 472 qemu_free(packet);
473 }
474}
475
f3b6c7fc
MM		 476static void qemu_enqueue_packet(VLANClientState *sender,
477 const uint8_t *buf, int size,
478 NetPacketSent *sent_cb)
e94667b9
MM		 479{
480 VLANPacket *packet;
481
482 packet = qemu_malloc(sizeof(VLANPacket) + size);
483 packet->next = sender->vlan->send_queue;
484 packet->sender = sender;
485 packet->size = size;
f3b6c7fc 486 packet->sent_cb = sent_cb;
e94667b9
MM		 487 memcpy(packet->data, buf, size);
488 sender->vlan->send_queue = packet;
489}
490
f3b6c7fc
MM		 491ssize_t qemu_send_packet_async(VLANClientState *sender,
492 const uint8_t *buf, int size,
493 NetPacketSent *sent_cb)
764a4d1d 494{
f3b6c7fc 495 int ret;
764a4d1d 496
f3b6c7fc
MM		 497 if (sender->link_down) {
498 return size;
499 }
436e5e53 500
63a01ef8 501#ifdef DEBUG_NET
f3b6c7fc 502 printf("vlan %d send:\n", sender->vlan->id);
63a01ef8
AL		 503 hex_dump(stdout, buf, size);
504#endif
f3b6c7fc
MM		 505
506 if (sender->vlan->delivering) {
507 qemu_enqueue_packet(sender, buf, size, NULL);
508 return size;
509 }
510
511 ret = qemu_deliver_packet(sender, buf, size);
512 if (ret == 0 && sent_cb != NULL) {
513 qemu_enqueue_packet(sender, buf, size, sent_cb);
514 return 0;
63a01ef8 515 }
e94667b9 516
f3b6c7fc
MM		 517 qemu_flush_queued_packets(sender);
518
519 return ret;
520}
521
522void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
523{
524 qemu_send_packet_async(vc, buf, size, NULL);
63a01ef8
AL		 525}
526
fbe78f4f
AL		 527static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
528 int iovcnt)
529{
530 uint8_t buffer[4096];
531 size_t offset = 0;
532 int i;
533
534 for (i = 0; i < iovcnt; i++) {
535 size_t len;
536
537 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
538 memcpy(buffer + offset, iov[i].iov_base, len);
539 offset += len;
540 }
541
f3b6c7fc 542 return vc->receive(vc, buffer, offset);
fbe78f4f
AL		 543}
544
e0e7877a
AL		 545static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
546{
547 size_t offset = 0;
548 int i;
549
550 for (i = 0; i < iovcnt; i++)
551 offset += iov[i].iov_len;
552 return offset;
553}
554
e94667b9
MM		 555static int qemu_deliver_packet_iov(VLANClientState *sender,
556 const struct iovec *iov, int iovcnt)
fbe78f4f 557{
fbe78f4f 558 VLANClientState *vc;
e94667b9
MM		 559 int ret = -1;
560
561 sender->vlan->delivering = 1;
562
563 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
564 ssize_t len;
565
566 if (vc == sender) {
567 continue;
568 }
569
570 if (vc->link_down) {
571 ret = calc_iov_length(iov, iovcnt);
572 continue;
573 }
574
575 if (vc->receive_iov) {
576 len = vc->receive_iov(vc, iov, iovcnt);
577 } else {
578 len = vc_sendv_compat(vc, iov, iovcnt);
579 }
580
581 ret = (ret >= 0) ? ret : len;
582 }
583
584 sender->vlan->delivering = 0;
585
586 return ret;
587}
588
589static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
f3b6c7fc
MM		 590 const struct iovec *iov, int iovcnt,
591 NetPacketSent *sent_cb)
e94667b9 592{
c27ff608 593 VLANPacket *packet;
e94667b9 594 size_t max_len = 0;
c27ff608 595 int i;
fbe78f4f 596
e94667b9 597 max_len = calc_iov_length(iov, iovcnt);
e0e7877a 598
e94667b9
MM		 599 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
600 packet->next = sender->vlan->send_queue;
601 packet->sender = sender;
f3b6c7fc 602 packet->sent_cb = sent_cb;
e94667b9 603 packet->size = 0;
c27ff608 604
e94667b9
MM		 605 for (i = 0; i < iovcnt; i++) {
606 size_t len = iov[i].iov_len;
c27ff608 607
e94667b9
MM		 608 memcpy(packet->data + packet->size, iov[i].iov_base, len);
609 packet->size += len;
610 }
fbe78f4f 611
e94667b9 612 sender->vlan->send_queue = packet;
fbe78f4f 613
e94667b9
MM		 614 return packet->size;
615}
fbe78f4f 616
f3b6c7fc
MM		 617ssize_t qemu_sendv_packet_async(VLANClientState *sender,
618 const struct iovec *iov, int iovcnt,
619 NetPacketSent *sent_cb)
e94667b9
MM		 620{
621 int ret;
622
623 if (sender->link_down) {
624 return calc_iov_length(iov, iovcnt);
625 }
626
627 if (sender->vlan->delivering) {
f3b6c7fc 628 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
fbe78f4f
AL		 629 }
630
e94667b9 631 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
f3b6c7fc
MM		 632 if (ret == 0 && sent_cb != NULL) {
633 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
634 return 0;
635 }
e94667b9
MM		 636
637 qemu_flush_queued_packets(sender);
638
639 return ret;
fbe78f4f
AL		 640}
641
f3b6c7fc
MM		 642ssize_t
643qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
644{
645 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
646}
647
10ae5a7a
JK		 648static void config_error(Monitor *mon, const char *fmt, ...)
649{
650 va_list ap;
651
652 va_start(ap, fmt);
653 if (mon) {
654 monitor_vprintf(mon, fmt, ap);
655 } else {
656 fprintf(stderr, "qemu: ");
657 vfprintf(stderr, fmt, ap);
658 exit(1);
659 }
660 va_end(ap);
661}
662
63a01ef8
AL		 663#if defined(CONFIG_SLIRP)
664
665/* slirp network adapter */
666
c92ef6a2
JK		 667#define SLIRP_CFG_HOSTFWD 1
668#define SLIRP_CFG_LEGACY 2
ad196a9d 669
b8e8af38
JK		 670struct slirp_config_str {
671 struct slirp_config_str *next;
ad196a9d
JK		 672 int flags;
673 char str[1024];
c92ef6a2 674 int legacy_format;
b8e8af38
JK		 675};
676
9f8bd042 677typedef struct SlirpState {
b1c99fcd 678 TAILQ_ENTRY(SlirpState) entry;
9f8bd042
JK		 679 VLANClientState *vc;
680 Slirp *slirp;
28432466
JK		 681#ifndef _WIN32
682 char smb_dir[128];
683#endif
9f8bd042
JK		 684} SlirpState;
685
ad196a9d
JK		 686static struct slirp_config_str *slirp_configs;
687const char *legacy_tftp_prefix;
688const char *legacy_bootp_filename;
b1c99fcd
JK		 689static TAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
690 TAILQ_HEAD_INITIALIZER(slirp_stacks);
63a01ef8 691
9f8bd042 692static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
3c6a0580 693 int legacy_format);
9f8bd042 694static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
c92ef6a2 695 int legacy_format);
ad196a9d 696
c5b76b38 697#ifndef _WIN32
ad196a9d
JK		 698static const char *legacy_smb_export;
699
492efabd 700static void slirp_smb(SlirpState *s, Monitor *mon, const char *exported_dir,
9f8bd042 701 struct in_addr vserver_addr);
28432466
JK		 702static void slirp_smb_cleanup(SlirpState *s);
703#else
704static inline void slirp_smb_cleanup(SlirpState *s) { }
c5b76b38 705#endif
b8e8af38 706
9f8bd042 707int slirp_can_output(void *opaque)
63a01ef8 708{
9f8bd042
JK		 709 SlirpState *s = opaque;
710
711 return qemu_can_send_packet(s->vc);
63a01ef8
AL		 712}
713
9f8bd042 714void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
63a01ef8 715{
9f8bd042
JK		 716 SlirpState *s = opaque;
717
63a01ef8
AL		 718#ifdef DEBUG_SLIRP
719 printf("slirp output:\n");
720 hex_dump(stdout, pkt, pkt_len);
721#endif
9f8bd042 722 qemu_send_packet(s->vc, pkt, pkt_len);
63a01ef8
AL		 723}
724
4f1c942b 725static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 726{
9f8bd042
JK		 727 SlirpState *s = vc->opaque;
728
63a01ef8
AL		 729#ifdef DEBUG_SLIRP
730 printf("slirp input:\n");
731 hex_dump(stdout, buf, size);
732#endif
9f8bd042 733 slirp_input(s->slirp, buf, size);
4f1c942b 734 return size;
63a01ef8
AL		 735}
736
8d6249a7
AL		 737static void net_slirp_cleanup(VLANClientState *vc)
738{
ad0d8c4c
JK		 739 SlirpState *s = vc->opaque;
740
741 slirp_cleanup(s->slirp);
28432466 742 slirp_smb_cleanup(s);
b1c99fcd 743 TAILQ_REMOVE(&slirp_stacks, s, entry);
ad0d8c4c 744 qemu_free(s);
8d6249a7
AL		 745}
746
ad196a9d 747static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
c92ef6a2
JK		 748 const char *name, int restricted,
749 const char *vnetwork, const char *vhost,
750 const char *vhostname, const char *tftp_export,
751 const char *bootfile, const char *vdhcp_start,
752 const char *vnameserver, const char *smb_export,
753 const char *vsmbserver)
63a01ef8 754{
ad0d8c4c 755 /* default settings according to historic slirp */
8389e7f4
AL		 756 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
757 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
ad0d8c4c
JK		 758 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
759 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
760 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
c92ef6a2 761#ifndef _WIN32
ad0d8c4c 762 struct in_addr smbsrv = { .s_addr = 0 };
c92ef6a2 763#endif
ad0d8c4c
JK		 764 SlirpState *s;
765 char buf[20];
766 uint32_t addr;
767 int shift;
768 char *end;
769
770 if (!tftp_export) {
771 tftp_export = legacy_tftp_prefix;
772 }
773 if (!bootfile) {
774 bootfile = legacy_bootp_filename;
775 }
c92ef6a2 776
ad0d8c4c
JK		 777 if (vnetwork) {
778 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
779 if (!inet_aton(vnetwork, &net)) {
780 return -1;
781 }
782 addr = ntohl(net.s_addr);
783 if (!(addr & 0x80000000)) {
784 mask.s_addr = htonl(0xff000000); /* class A */
785 } else if ((addr & 0xfff00000) == 0xac100000) {
786 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
787 } else if ((addr & 0xc0000000) == 0x80000000) {
788 mask.s_addr = htonl(0xffff0000); /* class B */
789 } else if ((addr & 0xffff0000) == 0xc0a80000) {
790 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
791 } else if ((addr & 0xffff0000) == 0xc6120000) {
792 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
793 } else if ((addr & 0xe0000000) == 0xe0000000) {
794 mask.s_addr = htonl(0xffffff00); /* class C */
c92ef6a2 795 } else {
ad0d8c4c
JK		 796 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
797 }
798 } else {
799 if (!inet_aton(buf, &net)) {
800 return -1;
801 }
802 shift = strtol(vnetwork, &end, 10);
803 if (*end != '\0') {
804 if (!inet_aton(vnetwork, &mask)) {
c92ef6a2 805 return -1;
c92ef6a2 806 }
ad0d8c4c
JK		 807 } else if (shift < 4 || shift > 32) {
808 return -1;
809 } else {
810 mask.s_addr = htonl(0xffffffff << (32 - shift));
c92ef6a2 811 }
c92ef6a2 812 }
ad0d8c4c
JK		 813 net.s_addr &= mask.s_addr;
814 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
815 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
816 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
817 }
c92ef6a2 818
ad0d8c4c
JK		 819 if (vhost && !inet_aton(vhost, &host)) {
820 return -1;
821 }
822 if ((host.s_addr & mask.s_addr) != net.s_addr) {
823 return -1;
824 }
c92ef6a2 825
ad0d8c4c
JK		 826 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
827 return -1;
828 }
829 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
830 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
831 return -1;
832 }
c92ef6a2 833
ad0d8c4c
JK		 834 if (vnameserver && !inet_aton(vnameserver, &dns)) {
835 return -1;
836 }
837 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
838 dns.s_addr == host.s_addr) {
839 return -1;
840 }
c92ef6a2
JK		 841
842#ifndef _WIN32
ad0d8c4c
JK		 843 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
844 return -1;
845 }
c92ef6a2
JK		 846#endif
847
ad0d8c4c
JK		 848 s = qemu_mallocz(sizeof(SlirpState));
849 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
850 tftp_export, bootfile, dhcp, dns, s);
b1c99fcd 851 TAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
b8e8af38 852
ad0d8c4c
JK		 853 while (slirp_configs) {
854 struct slirp_config_str *config = slirp_configs;
b8e8af38 855
ad0d8c4c
JK		 856 if (config->flags & SLIRP_CFG_HOSTFWD) {
857 slirp_hostfwd(s, mon, config->str,
858 config->flags & SLIRP_CFG_LEGACY);
859 } else {
860 slirp_guestfwd(s, mon, config->str,
861 config->flags & SLIRP_CFG_LEGACY);
b8e8af38 862 }
ad0d8c4c
JK		 863 slirp_configs = config->next;
864 qemu_free(config);
865 }
b8e8af38 866#ifndef _WIN32
ad0d8c4c
JK		 867 if (!smb_export) {
868 smb_export = legacy_smb_export;
869 }
870 if (smb_export) {
492efabd 871 slirp_smb(s, mon, smb_export, smbsrv);
63a01ef8 872 }
ad0d8c4c 873#endif
b8e8af38 874
9f8bd042
JK		 875 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
876 net_slirp_cleanup, s);
fc57bc57
JK		 877 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
878 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
63a01ef8
AL		 879 return 0;
880}
881
f13b572c
JK		 882static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
883 const char *stack)
884{
885 VLANClientState *vc;
886
887 if (vlan) {
888 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
889 if (!vc) {
890 return NULL;
891 }
892 if (strcmp(vc->model, "user")) {
893 monitor_printf(mon, "invalid device specified\n");
894 return NULL;
895 }
896 return vc->opaque;
897 } else {
898 if (TAILQ_EMPTY(&slirp_stacks)) {
899 monitor_printf(mon, "user mode network stack not in use\n");
900 return NULL;
901 }
902 return TAILQ_FIRST(&slirp_stacks);
903 }
904}
905
906void net_slirp_hostfwd_remove(Monitor *mon, const char *arg1,
907 const char *arg2, const char *arg3)
c1261d8d 908{
3c6a0580 909 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c1261d8d
AG		 910 int host_port;
911 char buf[256] = "";
f13b572c
JK		 912 const char *src_str, *p;
913 SlirpState *s;
c1261d8d 914 int is_udp = 0;
9c12a6f2 915 int err;
c1261d8d 916
f13b572c
JK		 917 if (arg2) {
918 s = slirp_lookup(mon, arg1, arg2);
919 src_str = arg3;
920 } else {
921 s = slirp_lookup(mon, NULL, NULL);
922 src_str = arg1;
923 }
924 if (!s) {
c1261d8d 925 return;
f3546deb 926 }
c1261d8d 927
3c6a0580 928 if (!src_str || !src_str[0])
c1261d8d
AG		 929 goto fail_syntax;
930
f13b572c 931 p = src_str;
c1261d8d
AG		 932 get_str_sep(buf, sizeof(buf), &p, ':');
933
934 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
935 is_udp = 0;
936 } else if (!strcmp(buf, "udp")) {
937 is_udp = 1;
938 } else {
939 goto fail_syntax;
940 }
941
3c6a0580
JK		 942 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
943 goto fail_syntax;
944 }
945 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
946 goto fail_syntax;
947 }
948
c1261d8d
AG		 949 host_port = atoi(p);
950
b1c99fcd 951 err = slirp_remove_hostfwd(TAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
9f8bd042 952 host_addr, host_port);
c1261d8d 953
9c12a6f2
JK		 954 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
955 err ? "removed" : "not found");
c1261d8d
AG		 956 return;
957
958 fail_syntax:
959 monitor_printf(mon, "invalid format\n");
960}
961
9f8bd042 962static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
3c6a0580 963 int legacy_format)
63a01ef8 964{
3c6a0580 965 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c92ef6a2 966 struct in_addr guest_addr = { .s_addr = 0 };
63a01ef8 967 int host_port, guest_port;
b8e8af38 968 const char *p;
c92ef6a2 969 char buf[256];
b8e8af38 970 int is_udp;
c92ef6a2 971 char *end;
1c6ed9f3 972
63a01ef8 973 p = redir_str;
f13b572c 974 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 975 goto fail_syntax;
b8e8af38 976 }
d4ebe193 977 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
63a01ef8
AL		 978 is_udp = 0;
979 } else if (!strcmp(buf, "udp")) {
980 is_udp = 1;
981 } else {
d4ebe193 982 goto fail_syntax;
63a01ef8
AL		 983 }
984
3c6a0580
JK		 985 if (!legacy_format) {
986 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
987 goto fail_syntax;
988 }
989 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
990 goto fail_syntax;
991 }
992 }
993
994 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
d4ebe193 995 goto fail_syntax;
b8e8af38 996 }
c92ef6a2
JK		 997 host_port = strtol(buf, &end, 0);
998 if (*end != '\0' || host_port < 1 || host_port > 65535) {
d4ebe193 999 goto fail_syntax;
b8e8af38 1000 }
63a01ef8 1001
b8e8af38 1002 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 1003 goto fail_syntax;
b8e8af38 1004 }
c92ef6a2 1005 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
d4ebe193 1006 goto fail_syntax;
b8e8af38 1007 }
63a01ef8 1008
c92ef6a2
JK		 1009 guest_port = strtol(p, &end, 0);
1010 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
d4ebe193 1011 goto fail_syntax;
b8e8af38 1012 }
63a01ef8 1013
9f8bd042
JK		 1014 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1015 guest_port) < 0) {
c92ef6a2
JK		 1016 config_error(mon, "could not set up host forwarding rule '%s'\n",
1017 redir_str);
63a01ef8
AL		 1018 }
1019 return;
d4ebe193
AL		 1020
1021 fail_syntax:
c92ef6a2 1022 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
63a01ef8
AL		 1023}
1024
f13b572c
JK		 1025void net_slirp_hostfwd_add(Monitor *mon, const char *arg1,
1026 const char *arg2, const char *arg3)
b8e8af38 1027{
f13b572c
JK		 1028 const char *redir_str;
1029 SlirpState *s;
1030
1031 if (arg2) {
1032 s = slirp_lookup(mon, arg1, arg2);
1033 redir_str = arg3;
1034 } else {
1035 s = slirp_lookup(mon, NULL, NULL);
1036 redir_str = arg1;
1037 }
1038 if (s) {
1039 slirp_hostfwd(s, mon, redir_str, 0);
b8e8af38
JK		 1040 }
1041
f3546deb
JK		 1042}
1043
1044void net_slirp_redir(const char *redir_str)
1045{
1046 struct slirp_config_str *config;
1047
b1c99fcd 1048 if (TAILQ_EMPTY(&slirp_stacks)) {
f3546deb
JK		 1049 config = qemu_malloc(sizeof(*config));
1050 pstrcpy(config->str, sizeof(config->str), redir_str);
3c6a0580 1051 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
f3546deb
JK		 1052 config->next = slirp_configs;
1053 slirp_configs = config;
b8e8af38
JK		 1054 return;
1055 }
1056
b1c99fcd 1057 slirp_hostfwd(TAILQ_FIRST(&slirp_stacks), NULL, redir_str, 1);
b8e8af38
JK		 1058}
1059
63a01ef8
AL		 1060#ifndef _WIN32
1061
63a01ef8 1062/* automatic user mode samba server configuration */
28432466 1063static void slirp_smb_cleanup(SlirpState *s)
63a01ef8 1064{
28432466 1065 char cmd[128];
09c18925 1066
28432466
JK		 1067 if (s->smb_dir[0] != '\0') {
1068 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1069 system(cmd);
1070 s->smb_dir[0] = '\0';
1071 }
63a01ef8
AL		 1072}
1073
492efabd 1074static void slirp_smb(SlirpState* s, Monitor *mon, const char *exported_dir,
9f8bd042 1075 struct in_addr vserver_addr)
63a01ef8 1076{
28432466
JK		 1077 static int instance;
1078 char smb_conf[128];
1079 char smb_cmdline[128];
63a01ef8
AL		 1080 FILE *f;
1081
28432466
JK		 1082 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1083 (long)getpid(), instance++);
1084 if (mkdir(s->smb_dir, 0700) < 0) {
1085 config_error(mon, "could not create samba server dir '%s'\n",
1086 s->smb_dir);
492efabd 1087 return;
63a01ef8 1088 }
28432466 1089 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
63a01ef8
AL		 1090
1091 f = fopen(smb_conf, "w");
1092 if (!f) {
28432466 1093 slirp_smb_cleanup(s);
492efabd
JK		 1094 config_error(mon, "could not create samba server "
1095 "configuration file '%s'\n", smb_conf);
1096 return;
63a01ef8
AL		 1097 }
1098 fprintf(f,
1099 "[global]\n"
1100 "private dir=%s\n"
1101 "smb ports=0\n"
1102 "socket address=127.0.0.1\n"
1103 "pid directory=%s\n"
1104 "lock directory=%s\n"
1105 "log file=%s/log.smbd\n"
1106 "smb passwd file=%s/smbpasswd\n"
1107 "security = share\n"
1108 "[qemu]\n"
1109 "path=%s\n"
1110 "read only=no\n"
1111 "guest ok=yes\n",
28432466
JK		 1112 s->smb_dir,
1113 s->smb_dir,
1114 s->smb_dir,
1115 s->smb_dir,
1116 s->smb_dir,
63a01ef8
AL		 1117 exported_dir
1118 );
1119 fclose(f);
63a01ef8
AL		 1120
1121 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1122 SMBD_COMMAND, smb_conf);
1123
bb53fc53 1124 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
28432466 1125 slirp_smb_cleanup(s);
492efabd 1126 config_error(mon, "conflicting/invalid smbserver address\n");
c92ef6a2 1127 }
63a01ef8
AL		 1128}
1129
ad196a9d 1130/* automatic user mode samba server configuration (legacy interface) */
b8e8af38
JK		 1131void net_slirp_smb(const char *exported_dir)
1132{
c92ef6a2
JK		 1133 struct in_addr vserver_addr = { .s_addr = 0 };
1134
ad196a9d 1135 if (legacy_smb_export) {
b8e8af38
JK		 1136 fprintf(stderr, "-smb given twice\n");
1137 exit(1);
1138 }
ad196a9d 1139 legacy_smb_export = exported_dir;
b1c99fcd 1140 if (!TAILQ_EMPTY(&slirp_stacks)) {
492efabd
JK		 1141 slirp_smb(TAILQ_FIRST(&slirp_stacks), NULL, exported_dir,
1142 vserver_addr);
b8e8af38
JK		 1143 }
1144}
1145
63a01ef8 1146#endif /* !defined(_WIN32) */
b8e8af38 1147
c92ef6a2 1148struct GuestFwd {
8ca9217d 1149 CharDriverState *hd;
c92ef6a2 1150 struct in_addr server;
8ca9217d 1151 int port;
9f8bd042 1152 Slirp *slirp;
511d2b14 1153};
8ca9217d 1154
c92ef6a2 1155static int guestfwd_can_read(void *opaque)
8ca9217d 1156{
c92ef6a2 1157 struct GuestFwd *fwd = opaque;
9f8bd042 1158 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
8ca9217d
AL		 1159}
1160
c92ef6a2 1161static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
8ca9217d 1162{
c92ef6a2 1163 struct GuestFwd *fwd = opaque;
9f8bd042 1164 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
8ca9217d
AL		 1165}
1166
9f8bd042 1167static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
c92ef6a2 1168 int legacy_format)
ad196a9d 1169{
c92ef6a2
JK		 1170 struct in_addr server = { .s_addr = 0 };
1171 struct GuestFwd *fwd;
1172 const char *p;
1173 char buf[128];
1174 char *end;
ad196a9d
JK		 1175 int port;
1176
c92ef6a2
JK		 1177 p = config_str;
1178 if (legacy_format) {
1179 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1180 goto fail_syntax;
1181 }
1182 } else {
1183 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1184 goto fail_syntax;
1185 }
1186 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1187 goto fail_syntax;
1188 }
1189 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1190 goto fail_syntax;
1191 }
1192 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1193 goto fail_syntax;
1194 }
1195 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1196 goto fail_syntax;
1197 }
1198 }
1199 port = strtol(buf, &end, 10);
1200 if (*end != '\0' || port < 1 || port > 65535) {
1201 goto fail_syntax;
ad196a9d 1202 }
ad196a9d 1203
c92ef6a2
JK		 1204 fwd = qemu_malloc(sizeof(struct GuestFwd));
1205 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1206 fwd->hd = qemu_chr_open(buf, p, NULL);
1207 if (!fwd->hd) {
1208 config_error(mon, "could not open guest forwarding device '%s'\n",
1209 buf);
1210 qemu_free(fwd);
ad196a9d
JK		 1211 return;
1212 }
ad196a9d 1213
bb53fc53 1214 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
c92ef6a2
JK		 1215 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1216 "rule '%s'\n", config_str);
1217 qemu_free(fwd);
1218 return;
1219 }
bb53fc53
JK		 1220 fwd->server = server;
1221 fwd->port = port;
1222 fwd->slirp = s->slirp;
1223
c92ef6a2
JK		 1224 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1225 NULL, fwd);
ad196a9d 1226 return;
c92ef6a2
JK		 1227
1228 fail_syntax:
1229 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
ad196a9d
JK		 1230}
1231
6dbe553f
JK		 1232void do_info_usernet(Monitor *mon)
1233{
b1c99fcd 1234 SlirpState *s;
9f8bd042 1235
b1c99fcd
JK		 1236 TAILQ_FOREACH(s, &slirp_stacks, entry) {
1237 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1238 slirp_connection_info(s->slirp, mon);
9f8bd042 1239 }
6dbe553f
JK		 1240}
1241
63a01ef8
AL		 1242#endif /* CONFIG_SLIRP */
1243
1244#if !defined(_WIN32)
1245
1246typedef struct TAPState {
1247 VLANClientState *vc;
1248 int fd;
1249 char down_script[1024];
973cbd37 1250 char down_script_arg[128];
5b01e886 1251 uint8_t buf[4096];
b664e367 1252 unsigned int read_poll : 1;
1f7babf6 1253 unsigned int write_poll : 1;
63a01ef8
AL		 1254} TAPState;
1255
b946a153
AL		 1256static int launch_script(const char *setup_script, const char *ifname, int fd);
1257
b664e367
MM		 1258static int tap_can_send(void *opaque);
1259static void tap_send(void *opaque);
1f7babf6 1260static void tap_writable(void *opaque);
b664e367
MM		 1261
1262static void tap_update_fd_handler(TAPState *s)
1263{
1264 qemu_set_fd_handler2(s->fd,
1265 s->read_poll ? tap_can_send : NULL,
1266 s->read_poll ? tap_send : NULL,
1f7babf6 1267 s->write_poll ? tap_writable : NULL,
b664e367
MM		 1268 s);
1269}
1270
1271static void tap_read_poll(TAPState *s, int enable)
1272{
1273 s->read_poll = !!enable;
1274 tap_update_fd_handler(s);
1275}
1276
1f7babf6
MM		 1277static void tap_write_poll(TAPState *s, int enable)
1278{
1279 s->write_poll = !!enable;
1280 tap_update_fd_handler(s);
1281}
1282
1283static void tap_writable(void *opaque)
1284{
1285 TAPState *s = opaque;
1286
1287 tap_write_poll(s, 0);
1288
1289 qemu_flush_queued_packets(s->vc);
1290}
1291
e3f5ec2b 1292static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
b535b7b2
AL		 1293 int iovcnt)
1294{
e3f5ec2b 1295 TAPState *s = vc->opaque;
b535b7b2
AL		 1296 ssize_t len;
1297
1298 do {
1299 len = writev(s->fd, iov, iovcnt);
1f7babf6
MM		 1300 } while (len == -1 && errno == EINTR);
1301
1302 if (len == -1 && errno == EAGAIN) {
1303 tap_write_poll(s, 1);
1304 return 0;
1305 }
b535b7b2
AL		 1306
1307 return len;
1308}
b535b7b2 1309
4f1c942b 1310static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1311{
e3f5ec2b 1312 TAPState *s = vc->opaque;
4f1c942b
MM		 1313 ssize_t len;
1314
1315 do {
1316 len = write(s->fd, buf, size);
1317 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1318
1319 return len;
63a01ef8
AL		 1320}
1321
3471b757
MM		 1322static int tap_can_send(void *opaque)
1323{
1324 TAPState *s = opaque;
1325
1326 return qemu_can_send_packet(s->vc);
1327}
1328
63a01ef8 1329#ifdef __sun__
5a6d8815
MM		 1330static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1331{
63a01ef8
AL		 1332 struct strbuf sbuf;
1333 int f = 0;
5a6d8815
MM		 1334
1335 sbuf.maxlen = maxlen;
3f4cb3d3 1336 sbuf.buf = (char *)buf;
5a6d8815
MM		 1337
1338 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1339}
63a01ef8 1340#else
5a6d8815
MM		 1341static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1342{
1343 return read(tapfd, buf, maxlen);
1344}
63a01ef8 1345#endif
5a6d8815 1346
783527a9 1347static void tap_send_completed(VLANClientState *vc, ssize_t len)
e19eb224
MM		 1348{
1349 TAPState *s = vc->opaque;
b664e367 1350 tap_read_poll(s, 1);
e19eb224
MM		 1351}
1352
5a6d8815
MM		 1353static void tap_send(void *opaque)
1354{
1355 TAPState *s = opaque;
5a6d8815
MM		 1356 int size;
1357
e19eb224
MM		 1358 do {
1359 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1360 if (size <= 0) {
1361 break;
1362 }
1363
1364 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1365 if (size == 0) {
b664e367 1366 tap_read_poll(s, 0);
e19eb224
MM		 1367 }
1368 } while (size > 0);
63a01ef8
AL		 1369}
1370
0df0ff6d 1371#ifdef TUNSETSNDBUF
fc5b81d1
MM		 1372/* sndbuf should be set to a value lower than the tx queue
1373 * capacity of any destination network interface.
1374 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1375 * a good default, given a 1500 byte MTU.
1376 */
1377#define TAP_DEFAULT_SNDBUF 1024*1024
1378
1379static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1380{
1381 int sndbuf = TAP_DEFAULT_SNDBUF;
1382
1383 if (sndbuf_str) {
1384 sndbuf = atoi(sndbuf_str);
1385 }
1386
1387 if (!sndbuf) {
1388 sndbuf = INT_MAX;
1389 }
1390
d026fb6d 1391 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && sndbuf_str) {
0df0ff6d
MM		 1392 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1393 strerror(errno));
1394 }
fc5b81d1 1395}
0df0ff6d 1396#else
fc5b81d1
MM		 1397static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1398{
1399 if (sndbuf_str) {
1400 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1401 }
0df0ff6d 1402}
fc5b81d1 1403#endif /* TUNSETSNDBUF */
0df0ff6d 1404
b946a153
AL		 1405static void tap_cleanup(VLANClientState *vc)
1406{
1407 TAPState *s = vc->opaque;
1408
b9adce2c
MM		 1409 qemu_purge_queued_packets(vc);
1410
b946a153
AL		 1411 if (s->down_script[0])
1412 launch_script(s->down_script, s->down_script_arg, s->fd);
1413
b664e367 1414 tap_read_poll(s, 0);
1f7babf6 1415 tap_write_poll(s, 0);
b946a153
AL		 1416 close(s->fd);
1417 qemu_free(s);
1418}
1419
63a01ef8
AL		 1420/* fd support */
1421
7a9f6e4a
AL		 1422static TAPState *net_tap_fd_init(VLANState *vlan,
1423 const char *model,
1424 const char *name,
1425 int fd)
63a01ef8
AL		 1426{
1427 TAPState *s;
1428
1429 s = qemu_mallocz(sizeof(TAPState));
63a01ef8 1430 s->fd = fd;
463af534
MM		 1431 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1432 tap_receive_iov, tap_cleanup, s);
b664e367 1433 tap_read_poll(s, 1);
7cb7434b 1434 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
63a01ef8
AL		 1435 return s;
1436}
1437
71e72a19 1438#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
63a01ef8
AL		 1439static int tap_open(char *ifname, int ifname_size)
1440{
1441 int fd;
1442 char *dev;
1443 struct stat s;
1444
1445 TFR(fd = open("/dev/tap", O_RDWR));
1446 if (fd < 0) {
1447 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1448 return -1;
1449 }
1450
1451 fstat(fd, &s);
1452 dev = devname(s.st_rdev, S_IFCHR);
1453 pstrcpy(ifname, ifname_size, dev);
1454
1455 fcntl(fd, F_SETFL, O_NONBLOCK);
1456 return fd;
1457}
1458#elif defined(__sun__)
1459#define TUNNEWPPA (('T'<<16) | 0x0001)
1460/*
1461 * Allocate TAP device, returns opened fd.
1462 * Stores dev name in the first arg(must be large enough).
1463 */
3f4cb3d3 1464static int tap_alloc(char *dev, size_t dev_size)
63a01ef8
AL		 1465{
1466 int tap_fd, if_fd, ppa = -1;
1467 static int ip_fd = 0;
1468 char *ptr;
1469
1470 static int arp_fd = 0;
1471 int ip_muxid, arp_muxid;
1472 struct strioctl strioc_if, strioc_ppa;
1473 int link_type = I_PLINK;;
1474 struct lifreq ifr;
1475 char actual_name[32] = "";
1476
1477 memset(&ifr, 0x0, sizeof(ifr));
1478
1479 if( *dev ){
1480 ptr = dev;
47398b9c 1481 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
63a01ef8
AL		 1482 ppa = atoi(ptr);
1483 }
1484
1485 /* Check if IP device was opened */
1486 if( ip_fd )
1487 close(ip_fd);
1488
1489 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1490 if (ip_fd < 0) {
1491 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1492 return -1;
1493 }
1494
1495 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1496 if (tap_fd < 0) {
1497 syslog(LOG_ERR, "Can't open /dev/tap");
1498 return -1;
1499 }
1500
1501 /* Assign a new PPA and get its unit number. */
1502 strioc_ppa.ic_cmd = TUNNEWPPA;
1503 strioc_ppa.ic_timout = 0;
1504 strioc_ppa.ic_len = sizeof(ppa);
1505 strioc_ppa.ic_dp = (char *)&ppa;
1506 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1507 syslog (LOG_ERR, "Can't assign new interface");
1508
1509 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1510 if (if_fd < 0) {
1511 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1512 return -1;
1513 }
1514 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1515 syslog(LOG_ERR, "Can't push IP module");
1516 return -1;
1517 }
1518
1519 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1520 syslog(LOG_ERR, "Can't get flags\n");
1521
1522 snprintf (actual_name, 32, "tap%d", ppa);
1523 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1524
1525 ifr.lifr_ppa = ppa;
1526 /* Assign ppa according to the unit number returned by tun device */
1527
1528 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1529 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1530 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1531 syslog (LOG_ERR, "Can't get flags\n");
1532 /* Push arp module to if_fd */
1533 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1534 syslog (LOG_ERR, "Can't push ARP module (2)");
1535
1536 /* Push arp module to ip_fd */
1537 if (ioctl (ip_fd, I_POP, NULL) < 0)
1538 syslog (LOG_ERR, "I_POP failed\n");
1539 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1540 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1541 /* Open arp_fd */
1542 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1543 if (arp_fd < 0)
1544 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1545
1546 /* Set ifname to arp */
1547 strioc_if.ic_cmd = SIOCSLIFNAME;
1548 strioc_if.ic_timout = 0;
1549 strioc_if.ic_len = sizeof(ifr);
1550 strioc_if.ic_dp = (char *)&ifr;
1551 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1552 syslog (LOG_ERR, "Can't set ifname to arp\n");
1553 }
1554
1555 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1556 syslog(LOG_ERR, "Can't link TAP device to IP");
1557 return -1;
1558 }
1559
1560 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1561 syslog (LOG_ERR, "Can't link TAP device to ARP");
1562
1563 close (if_fd);
1564
1565 memset(&ifr, 0x0, sizeof(ifr));
1566 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1567 ifr.lifr_ip_muxid = ip_muxid;
1568 ifr.lifr_arp_muxid = arp_muxid;
1569
1570 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1571 {
1572 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1573 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1574 syslog (LOG_ERR, "Can't set multiplexor id");
1575 }
1576
1577 snprintf(dev, dev_size, "tap%d", ppa);
1578 return tap_fd;
1579}
1580
1581static int tap_open(char *ifname, int ifname_size)
1582{
1583 char dev[10]="";
1584 int fd;
1585 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1586 fprintf(stderr, "Cannot allocate TAP device\n");
1587 return -1;
1588 }
1589 pstrcpy(ifname, ifname_size, dev);
1590 fcntl(fd, F_SETFL, O_NONBLOCK);
1591 return fd;
1592}
b29fe3ed 1593#elif defined (_AIX)
1594static int tap_open(char *ifname, int ifname_size)
1595{
1596 fprintf (stderr, "no tap on AIX\n");
1597 return -1;
1598}
63a01ef8
AL		 1599#else
1600static int tap_open(char *ifname, int ifname_size)
1601{
1602 struct ifreq ifr;
1603 int fd, ret;
1604
1605 TFR(fd = open("/dev/net/tun", O_RDWR));
1606 if (fd < 0) {
1607 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1608 return -1;
1609 }
1610 memset(&ifr, 0, sizeof(ifr));
1611 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1612 if (ifname[0] != '\0')
1613 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1614 else
1615 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1616 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1617 if (ret != 0) {
1618 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1619 close(fd);
1620 return -1;
1621 }
1622 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1623 fcntl(fd, F_SETFL, O_NONBLOCK);
1624 return fd;
1625}
1626#endif
1627
1628static int launch_script(const char *setup_script, const char *ifname, int fd)
1629{
7c3370d4 1630 sigset_t oldmask, mask;
63a01ef8
AL		 1631 int pid, status;
1632 char *args[3];
1633 char **parg;
1634
7c3370d4
JK		 1635 sigemptyset(&mask);
1636 sigaddset(&mask, SIGCHLD);
1637 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1638
1639 /* try to launch network script */
1640 pid = fork();
1641 if (pid == 0) {
1642 int open_max = sysconf(_SC_OPEN_MAX), i;
1643
1644 for (i = 0; i < open_max; i++) {
1645 if (i != STDIN_FILENO &&
1646 i != STDOUT_FILENO &&
1647 i != STDERR_FILENO &&
1648 i != fd) {
1649 close(i);
63a01ef8
AL		 1650 }
1651 }
7c3370d4
JK		 1652 parg = args;
1653 *parg++ = (char *)setup_script;
1654 *parg++ = (char *)ifname;
1655 *parg++ = NULL;
1656 execv(setup_script, args);
1657 _exit(1);
1658 } else if (pid > 0) {
1659 while (waitpid(pid, &status, 0) != pid) {
1660 /* loop */
1661 }
1662 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1663
1664 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1665 return 0;
1666 }
1667 }
1668 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1669 return -1;
63a01ef8
AL		 1670}
1671
4a77b25e
MM		 1672static TAPState *net_tap_init(VLANState *vlan, const char *model,
1673 const char *name, const char *ifname1,
1674 const char *setup_script, const char *down_script)
63a01ef8
AL		 1675{
1676 TAPState *s;
1677 int fd;
1678 char ifname[128];
1679
1680 if (ifname1 != NULL)
1681 pstrcpy(ifname, sizeof(ifname), ifname1);
1682 else
1683 ifname[0] = '\0';
1684 TFR(fd = tap_open(ifname, sizeof(ifname)));
1685 if (fd < 0)
4a77b25e 1686 return NULL;
63a01ef8
AL		 1687
1688 if (!setup_script || !strcmp(setup_script, "no"))
1689 setup_script = "";
4a77b25e
MM		 1690 if (setup_script[0] != '\0' &&
1691 launch_script(setup_script, ifname, fd)) {
1692 return NULL;
63a01ef8 1693 }
7a9f6e4a 1694 s = net_tap_fd_init(vlan, model, name, fd);
63a01ef8 1695 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
7cb7434b
AL		 1696 "ifname=%s,script=%s,downscript=%s",
1697 ifname, setup_script, down_script);
973cbd37 1698 if (down_script && strcmp(down_script, "no")) {
63a01ef8 1699 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
973cbd37
AL		 1700 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1701 }
4a77b25e 1702 return s;
63a01ef8
AL		 1703}
1704
1705#endif /* !_WIN32 */
1706
1707#if defined(CONFIG_VDE)
1708typedef struct VDEState {
1709 VLANClientState *vc;
1710 VDECONN *vde;
1711} VDEState;
1712
1713static void vde_to_qemu(void *opaque)
1714{
1715 VDEState *s = opaque;
1716 uint8_t buf[4096];
1717 int size;
1718
cc63bb0f 1719 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
63a01ef8
AL		 1720 if (size > 0) {
1721 qemu_send_packet(s->vc, buf, size);
1722 }
1723}
1724
4f1c942b 1725static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1726{
e3f5ec2b 1727 VDEState *s = vc->opaque;
068daedd 1728 ssize_t ret;
4f1c942b
MM		 1729
1730 do {
1731 ret = vde_send(s->vde, (const char *)buf, size, 0);
1732 } while (ret < 0 && errno == EINTR);
1733
1734 return ret;
63a01ef8
AL		 1735}
1736
b946a153
AL		 1737static void vde_cleanup(VLANClientState *vc)
1738{
1739 VDEState *s = vc->opaque;
1740 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1741 vde_close(s->vde);
1742 qemu_free(s);
1743}
1744
7a9f6e4a
AL		 1745static int net_vde_init(VLANState *vlan, const char *model,
1746 const char *name, const char *sock,
bf38c1a0 1747 int port, const char *group, int mode)
63a01ef8
AL		 1748{
1749 VDEState *s;
1750 char *init_group = strlen(group) ? (char *)group : NULL;
1751 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1752
1753 struct vde_open_args args = {
1754 .port = port,
1755 .group = init_group,
1756 .mode = mode,
1757 };
1758
1759 s = qemu_mallocz(sizeof(VDEState));
cc63bb0f 1760 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
63a01ef8
AL		 1761 if (!s->vde){
1762 free(s);
1763 return -1;
1764 }
e3f5ec2b 1765 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
b946a153 1766 NULL, vde_cleanup, s);
63a01ef8 1767 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
7cb7434b 1768 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
63a01ef8
AL		 1769 sock, vde_datafd(s->vde));
1770 return 0;
1771}
1772#endif
1773
1774/* network connection */
1775typedef struct NetSocketState {
1776 VLANClientState *vc;
1777 int fd;
1778 int state; /* 0 = getting length, 1 = getting data */
abcd2baa
AL		 1779 unsigned int index;
1780 unsigned int packet_len;
63a01ef8
AL		 1781 uint8_t buf[4096];
1782 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1783} NetSocketState;
1784
1785typedef struct NetSocketListenState {
1786 VLANState *vlan;
bf38c1a0 1787 char *model;
7a9f6e4a 1788 char *name;
63a01ef8
AL		 1789 int fd;
1790} NetSocketListenState;
1791
1792/* XXX: we consider we can send the whole packet without blocking */
4f1c942b 1793static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1794{
e3f5ec2b 1795 NetSocketState *s = vc->opaque;
63a01ef8
AL		 1796 uint32_t len;
1797 len = htonl(size);
1798
1799 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
4f1c942b 1800 return send_all(s->fd, buf, size);
63a01ef8
AL		 1801}
1802
4f1c942b 1803static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1804{
e3f5ec2b 1805 NetSocketState *s = vc->opaque;
4f1c942b 1806
70503264 1807 return sendto(s->fd, (const void *)buf, size, 0,
4f1c942b 1808 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
63a01ef8
AL		 1809}
1810
1811static void net_socket_send(void *opaque)
1812{
1813 NetSocketState *s = opaque;
abcd2baa
AL		 1814 int size, err;
1815 unsigned l;
63a01ef8
AL		 1816 uint8_t buf1[4096];
1817 const uint8_t *buf;
1818
c5b76b38 1819 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
63a01ef8
AL		 1820 if (size < 0) {
1821 err = socket_error();
1822 if (err != EWOULDBLOCK)
1823 goto eoc;
1824 } else if (size == 0) {
1825 /* end of connection */
1826 eoc:
1827 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1828 closesocket(s->fd);
1829 return;
1830 }
1831 buf = buf1;
1832 while (size > 0) {
1833 /* reassemble a packet from the network */
1834 switch(s->state) {
1835 case 0:
1836 l = 4 - s->index;
1837 if (l > size)
1838 l = size;
1839 memcpy(s->buf + s->index, buf, l);
1840 buf += l;
1841 size -= l;
1842 s->index += l;
1843 if (s->index == 4) {
1844 /* got length */
1845 s->packet_len = ntohl(*(uint32_t *)s->buf);
1846 s->index = 0;
1847 s->state = 1;
1848 }
1849 break;
1850 case 1:
1851 l = s->packet_len - s->index;
1852 if (l > size)
1853 l = size;
abcd2baa
AL		 1854 if (s->index + l <= sizeof(s->buf)) {
1855 memcpy(s->buf + s->index, buf, l);
1856 } else {
1857 fprintf(stderr, "serious error: oversized packet received,"
1858 "connection terminated.\n");
1859 s->state = 0;
1860 goto eoc;
1861 }
1862
63a01ef8
AL		 1863 s->index += l;
1864 buf += l;
1865 size -= l;
1866 if (s->index >= s->packet_len) {
1867 qemu_send_packet(s->vc, s->buf, s->packet_len);
1868 s->index = 0;
1869 s->state = 0;
1870 }
1871 break;
1872 }
1873 }
1874}
1875
1876static void net_socket_send_dgram(void *opaque)
1877{
1878 NetSocketState *s = opaque;
1879 int size;
1880
c5b76b38 1881 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
63a01ef8
AL		 1882 if (size < 0)
1883 return;
1884 if (size == 0) {
1885 /* end of connection */
1886 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1887 return;
1888 }
1889 qemu_send_packet(s->vc, s->buf, size);
1890}
1891
1892static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1893{
1894 struct ip_mreq imr;
1895 int fd;
1896 int val, ret;
1897 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1898 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1899 inet_ntoa(mcastaddr->sin_addr),
1900 (int)ntohl(mcastaddr->sin_addr.s_addr));
1901 return -1;
1902
1903 }
1904 fd = socket(PF_INET, SOCK_DGRAM, 0);
1905 if (fd < 0) {
1906 perror("socket(PF_INET, SOCK_DGRAM)");
1907 return -1;
1908 }
1909
1910 val = 1;
1911 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1912 (const char *)&val, sizeof(val));
1913 if (ret < 0) {
1914 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1915 goto fail;
1916 }
1917
1918 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1919 if (ret < 0) {
1920 perror("bind");
1921 goto fail;
1922 }
1923
1924 /* Add host to multicast group */
1925 imr.imr_multiaddr = mcastaddr->sin_addr;
1926 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1927
1928 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1929 (const char *)&imr, sizeof(struct ip_mreq));
1930 if (ret < 0) {
1931 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1932 goto fail;
1933 }
1934
1935 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1936 val = 1;
1937 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1938 (const char *)&val, sizeof(val));
1939 if (ret < 0) {
1940 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1941 goto fail;
1942 }
1943
1944 socket_set_nonblock(fd);
1945 return fd;
1946fail:
1947 if (fd >= 0)
1948 closesocket(fd);
1949 return -1;
1950}
1951
b946a153
AL		 1952static void net_socket_cleanup(VLANClientState *vc)
1953{
1954 NetSocketState *s = vc->opaque;
1955 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1956 close(s->fd);
1957 qemu_free(s);
1958}
1959
7a9f6e4a
AL		 1960static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1961 const char *model,
1962 const char *name,
bf38c1a0 1963 int fd, int is_connected)
63a01ef8
AL		 1964{
1965 struct sockaddr_in saddr;
1966 int newfd;
1967 socklen_t saddr_len;
1968 NetSocketState *s;
1969
1970 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1971 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1972 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1973 */
1974
1975 if (is_connected) {
1976 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1977 /* must be bound */
1978 if (saddr.sin_addr.s_addr==0) {
1979 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1980 fd);
1981 return NULL;
1982 }
1983 /* clone dgram socket */
1984 newfd = net_socket_mcast_create(&saddr);
1985 if (newfd < 0) {
1986 /* error already reported by net_socket_mcast_create() */
1987 close(fd);
1988 return NULL;
1989 }
1990 /* clone newfd to fd, close newfd */
1991 dup2(newfd, fd);
1992 close(newfd);
1993
1994 } else {
1995 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1996 fd, strerror(errno));
1997 return NULL;
1998 }
1999 }
2000
2001 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8
AL		 2002 s->fd = fd;
2003
463af534 2004 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
b946a153 2005 NULL, net_socket_cleanup, s);
63a01ef8
AL		 2006 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2007
2008 /* mcast: save bound address as dst */
2009 if (is_connected) s->dgram_dst=saddr;
2010
2011 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2012 "socket: fd=%d (%s mcast=%s:%d)",
2013 fd, is_connected? "cloned" : "",
2014 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2015 return s;
2016}
2017
2018static void net_socket_connect(void *opaque)
2019{
2020 NetSocketState *s = opaque;
2021 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2022}
2023
7a9f6e4a
AL		 2024static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2025 const char *model,
2026 const char *name,
bf38c1a0 2027 int fd, int is_connected)
63a01ef8
AL		 2028{
2029 NetSocketState *s;
2030 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8 2031 s->fd = fd;
463af534 2032 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
b946a153 2033 NULL, net_socket_cleanup, s);
63a01ef8
AL		 2034 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2035 "socket: fd=%d", fd);
2036 if (is_connected) {
2037 net_socket_connect(s);
2038 } else {
2039 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2040 }
2041 return s;
2042}
2043
7a9f6e4a
AL		 2044static NetSocketState *net_socket_fd_init(VLANState *vlan,
2045 const char *model, const char *name,
bf38c1a0 2046 int fd, int is_connected)
63a01ef8
AL		 2047{
2048 int so_type=-1, optlen=sizeof(so_type);
2049
2050 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2051 (socklen_t *)&optlen)< 0) {
2052 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2053 return NULL;
2054 }
2055 switch(so_type) {
2056 case SOCK_DGRAM:
7a9f6e4a 2057 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
63a01ef8 2058 case SOCK_STREAM:
7a9f6e4a 2059 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2060 default:
2061 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2062 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
7a9f6e4a 2063 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2064 }
2065 return NULL;
2066}
2067
2068static void net_socket_accept(void *opaque)
2069{
2070 NetSocketListenState *s = opaque;
2071 NetSocketState *s1;
2072 struct sockaddr_in saddr;
2073 socklen_t len;
2074 int fd;
2075
2076 for(;;) {
2077 len = sizeof(saddr);
2078 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2079 if (fd < 0 && errno != EINTR) {
2080 return;
2081 } else if (fd >= 0) {
2082 break;
2083 }
2084 }
7a9f6e4a 2085 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
63a01ef8
AL		 2086 if (!s1) {
2087 closesocket(fd);
2088 } else {
2089 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2090 "socket: connection from %s:%d",
2091 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2092 }
2093}
2094
7a9f6e4a
AL		 2095static int net_socket_listen_init(VLANState *vlan,
2096 const char *model,
2097 const char *name,
bf38c1a0 2098 const char *host_str)
63a01ef8
AL		 2099{
2100 NetSocketListenState *s;
2101 int fd, val, ret;
2102 struct sockaddr_in saddr;
2103
2104 if (parse_host_port(&saddr, host_str) < 0)
2105 return -1;
2106
2107 s = qemu_mallocz(sizeof(NetSocketListenState));
63a01ef8
AL		 2108
2109 fd = socket(PF_INET, SOCK_STREAM, 0);
2110 if (fd < 0) {
2111 perror("socket");
2112 return -1;
2113 }
2114 socket_set_nonblock(fd);
2115
2116 /* allow fast reuse */
2117 val = 1;
2118 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2119
2120 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2121 if (ret < 0) {
2122 perror("bind");
2123 return -1;
2124 }
2125 ret = listen(fd, 0);
2126 if (ret < 0) {
2127 perror("listen");
2128 return -1;
2129 }
2130 s->vlan = vlan;
bf38c1a0 2131 s->model = strdup(model);
ea053add 2132 s->name = name ? strdup(name) : NULL;
63a01ef8
AL		 2133 s->fd = fd;
2134 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2135 return 0;
2136}
2137
7a9f6e4a
AL		 2138static int net_socket_connect_init(VLANState *vlan,
2139 const char *model,
2140 const char *name,
bf38c1a0 2141 const char *host_str)
63a01ef8
AL		 2142{
2143 NetSocketState *s;
2144 int fd, connected, ret, err;
2145 struct sockaddr_in saddr;
2146
2147 if (parse_host_port(&saddr, host_str) < 0)
2148 return -1;
2149
2150 fd = socket(PF_INET, SOCK_STREAM, 0);
2151 if (fd < 0) {
2152 perror("socket");
2153 return -1;
2154 }
2155 socket_set_nonblock(fd);
2156
2157 connected = 0;
2158 for(;;) {
2159 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2160 if (ret < 0) {
2161 err = socket_error();
2162 if (err == EINTR || err == EWOULDBLOCK) {
2163 } else if (err == EINPROGRESS) {
2164 break;
2165#ifdef _WIN32
2166 } else if (err == WSAEALREADY) {
2167 break;
2168#endif
2169 } else {
2170 perror("connect");
2171 closesocket(fd);
2172 return -1;
2173 }
2174 } else {
2175 connected = 1;
2176 break;
2177 }
2178 }
7a9f6e4a 2179 s = net_socket_fd_init(vlan, model, name, fd, connected);
63a01ef8
AL		 2180 if (!s)
2181 return -1;
2182 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2183 "socket: connect to %s:%d",
2184 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2185 return 0;
2186}
2187
7a9f6e4a
AL		 2188static int net_socket_mcast_init(VLANState *vlan,
2189 const char *model,
2190 const char *name,
bf38c1a0 2191 const char *host_str)
63a01ef8
AL		 2192{
2193 NetSocketState *s;
2194 int fd;
2195 struct sockaddr_in saddr;
2196
2197 if (parse_host_port(&saddr, host_str) < 0)
2198 return -1;
2199
2200
2201 fd = net_socket_mcast_create(&saddr);
2202 if (fd < 0)
2203 return -1;
2204
7a9f6e4a 2205 s = net_socket_fd_init(vlan, model, name, fd, 0);
63a01ef8
AL		 2206 if (!s)
2207 return -1;
2208
2209 s->dgram_dst = saddr;
2210
2211 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2212 "socket: mcast=%s:%d",
2213 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2214 return 0;
2215
2216}
2217
bb9ea79e
AL		 2218typedef struct DumpState {
2219 VLANClientState *pcap_vc;
2220 int fd;
2221 int pcap_caplen;
2222} DumpState;
2223
2224#define PCAP_MAGIC 0xa1b2c3d4
2225
2226struct pcap_file_hdr {
2227 uint32_t magic;
2228 uint16_t version_major;
2229 uint16_t version_minor;
2230 int32_t thiszone;
2231 uint32_t sigfigs;
2232 uint32_t snaplen;
2233 uint32_t linktype;
2234};
2235
2236struct pcap_sf_pkthdr {
2237 struct {
2238 int32_t tv_sec;
2239 int32_t tv_usec;
2240 } ts;
2241 uint32_t caplen;
2242 uint32_t len;
2243};
2244
4f1c942b 2245static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
bb9ea79e 2246{
e3f5ec2b 2247 DumpState *s = vc->opaque;
bb9ea79e
AL		 2248 struct pcap_sf_pkthdr hdr;
2249 int64_t ts;
2250 int caplen;
2251
2252 /* Early return in case of previous error. */
2253 if (s->fd < 0) {
4f1c942b 2254 return size;
bb9ea79e
AL		 2255 }
2256
37cb6fc3 2257 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
bb9ea79e
AL		 2258 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2259
37cb6fc3 2260 hdr.ts.tv_sec = ts / 1000000;
bb9ea79e
AL		 2261 hdr.ts.tv_usec = ts % 1000000;
2262 hdr.caplen = caplen;
2263 hdr.len = size;
2264 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2265 write(s->fd, buf, caplen) != caplen) {
2266 qemu_log("-net dump write error - stop dump\n");
2267 close(s->fd);
2268 s->fd = -1;
2269 }
4f1c942b
MM		 2270
2271 return size;
bb9ea79e
AL		 2272}
2273
2274static void net_dump_cleanup(VLANClientState *vc)
2275{
2276 DumpState *s = vc->opaque;
2277
2278 close(s->fd);
2279 qemu_free(s);
2280}
2281
10ae5a7a 2282static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
bb9ea79e
AL		 2283 const char *name, const char *filename, int len)
2284{
2285 struct pcap_file_hdr hdr;
2286 DumpState *s;
2287
2288 s = qemu_malloc(sizeof(DumpState));
2289
024431b3 2290 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
bb9ea79e 2291 if (s->fd < 0) {
10ae5a7a 2292 config_error(mon, "-net dump: can't open %s\n", filename);
bb9ea79e
AL		 2293 return -1;
2294 }
2295
2296 s->pcap_caplen = len;
2297
2298 hdr.magic = PCAP_MAGIC;
2299 hdr.version_major = 2;
2300 hdr.version_minor = 4;
2301 hdr.thiszone = 0;
2302 hdr.sigfigs = 0;
2303 hdr.snaplen = s->pcap_caplen;
2304 hdr.linktype = 1;
2305
2306 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
10ae5a7a 2307 config_error(mon, "-net dump write error: %s\n", strerror(errno));
bb9ea79e
AL		 2308 close(s->fd);
2309 qemu_free(s);
2310 return -1;
2311 }
2312
463af534 2313 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
bb9ea79e
AL		 2314 net_dump_cleanup, s);
2315 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2316 "dump to %s (len=%d)", filename, len);
2317 return 0;
2318}
2319
63a01ef8 2320/* find or alloc a new VLAN */
1a609520 2321VLANState *qemu_find_vlan(int id, int allocate)
63a01ef8
AL		 2322{
2323 VLANState **pvlan, *vlan;
2324 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2325 if (vlan->id == id)
2326 return vlan;
2327 }
1a609520
JK		 2328 if (!allocate) {
2329 return NULL;
2330 }
63a01ef8 2331 vlan = qemu_mallocz(sizeof(VLANState));
63a01ef8
AL		 2332 vlan->id = id;
2333 vlan->next = NULL;
2334 pvlan = &first_vlan;
2335 while (*pvlan != NULL)
2336 pvlan = &(*pvlan)->next;
2337 *pvlan = vlan;
2338 return vlan;
2339}
2340
7697079b
AL		 2341static int nic_get_free_idx(void)
2342{
2343 int index;
2344
2345 for (index = 0; index < MAX_NICS; index++)
2346 if (!nd_table[index].used)
2347 return index;
2348 return -1;
2349}
2350
d07f22c5
AL		 2351void qemu_check_nic_model(NICInfo *nd, const char *model)
2352{
2353 const char *models[2];
2354
2355 models[0] = model;
2356 models[1] = NULL;
2357
2358 qemu_check_nic_model_list(nd, models, model);
2359}
2360
2361void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2362 const char *default_model)
2363{
2364 int i, exit_status = 0;
2365
2366 if (!nd->model)
2367 nd->model = strdup(default_model);
2368
2369 if (strcmp(nd->model, "?") != 0) {
2370 for (i = 0 ; models[i]; i++)
2371 if (strcmp(nd->model, models[i]) == 0)
2372 return;
2373
2374 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2375 exit_status = 1;
2376 }
2377
2378 fprintf(stderr, "qemu: Supported NIC models: ");
2379 for (i = 0 ; models[i]; i++)
2380 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2381
2382 exit(exit_status);
2383}
2384
c1d6eed7
MM		 2385static int net_handle_fd_param(Monitor *mon, const char *param)
2386{
2387 if (!qemu_isdigit(param[0])) {
2388 int fd;
2389
2390 fd = monitor_get_fd(mon, param);
2391 if (fd == -1) {
2392 config_error(mon, "No file descriptor named %s found", param);
2393 return -1;
2394 }
2395
2396 return fd;
2397 } else {
2398 return strtol(param, NULL, 0);
2399 }
2400}
2401
10ae5a7a 2402int net_client_init(Monitor *mon, const char *device, const char *p)
63a01ef8
AL		 2403{
2404 char buf[1024];
2405 int vlan_id, ret;
2406 VLANState *vlan;
7a9f6e4a 2407 char *name = NULL;
63a01ef8
AL		 2408
2409 vlan_id = 0;
2410 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2411 vlan_id = strtol(buf, NULL, 0);
2412 }
1a609520 2413 vlan = qemu_find_vlan(vlan_id, 1);
9036de1a 2414
7a9f6e4a 2415 if (get_param_value(buf, sizeof(buf), "name", p)) {
10ae5a7a 2416 name = qemu_strdup(buf);
7a9f6e4a 2417 }
63a01ef8 2418 if (!strcmp(device, "nic")) {
8e4416af 2419 static const char * const nic_params[] = {
eb54b6dc 2420 "vlan", "name", "macaddr", "model", "addr", "id", "vectors", NULL
8e4416af 2421 };
63a01ef8
AL		 2422 NICInfo *nd;
2423 uint8_t *macaddr;
7697079b 2424 int idx = nic_get_free_idx();
63a01ef8 2425
0aa7a205 2426 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
10ae5a7a
JK		 2427 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2428 ret = -1;
2429 goto out;
8e4416af 2430 }
7697079b 2431 if (idx == -1 || nb_nics >= MAX_NICS) {
10ae5a7a 2432 config_error(mon, "Too Many NICs\n");
771f1339
AL		 2433 ret = -1;
2434 goto out;
63a01ef8 2435 }
7697079b 2436 nd = &nd_table[idx];
63a01ef8
AL		 2437 macaddr = nd->macaddr;
2438 macaddr[0] = 0x52;
2439 macaddr[1] = 0x54;
2440 macaddr[2] = 0x00;
2441 macaddr[3] = 0x12;
2442 macaddr[4] = 0x34;
7697079b 2443 macaddr[5] = 0x56 + idx;
63a01ef8
AL		 2444
2445 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2446 if (parse_macaddr(macaddr, buf) < 0) {
10ae5a7a 2447 config_error(mon, "invalid syntax for ethernet address\n");
771f1339
AL		 2448 ret = -1;
2449 goto out;
63a01ef8
AL		 2450 }
2451 }
2452 if (get_param_value(buf, sizeof(buf), "model", p)) {
2453 nd->model = strdup(buf);
2454 }
5607c388
MA		 2455 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2456 nd->devaddr = strdup(buf);
2457 }
eb54b6dc
GH		 2458 if (get_param_value(buf, sizeof(buf), "id", p)) {
2459 nd->id = strdup(buf);
2460 }
ffe6370c
MT		 2461 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2462 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2463 char *endptr;
2464 long vectors = strtol(buf, &endptr, 0);
2465 if (*endptr) {
2466 config_error(mon, "invalid syntax for # of vectors\n");
2467 ret = -1;
2468 goto out;
2469 }
2470 if (vectors < 0 || vectors > 0x7ffffff) {
2471 config_error(mon, "invalid # of vectors\n");
2472 ret = -1;
2473 goto out;
2474 }
2475 nd->nvectors = vectors;
2476 }
63a01ef8 2477 nd->vlan = vlan;
7a9f6e4a 2478 nd->name = name;
7697079b 2479 nd->used = 1;
7a9f6e4a 2480 name = NULL;
63a01ef8
AL		 2481 nb_nics++;
2482 vlan->nb_guest_devs++;
4d73cd3b 2483 ret = idx;
63a01ef8
AL		 2484 } else
2485 if (!strcmp(device, "none")) {
8e4416af 2486 if (*p != '\0') {
10ae5a7a
JK		 2487 config_error(mon, "'none' takes no parameters\n");
2488 ret = -1;
2489 goto out;
8e4416af 2490 }
63a01ef8
AL		 2491 /* does nothing. It is needed to signal that no network cards
2492 are wanted */
2493 ret = 0;
2494 } else
2495#ifdef CONFIG_SLIRP
2496 if (!strcmp(device, "user")) {
8e4416af 2497 static const char * const slirp_params[] = {
c92ef6a2
JK		 2498 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2499 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2500 "hostfwd", "guestfwd", NULL
8e4416af 2501 };
ad196a9d 2502 struct slirp_config_str *config;
c92ef6a2
JK		 2503 int restricted = 0;
2504 char *vnet = NULL;
2505 char *vhost = NULL;
2506 char *vhostname = NULL;
ad196a9d
JK		 2507 char *tftp_export = NULL;
2508 char *bootfile = NULL;
c92ef6a2
JK		 2509 char *vdhcp_start = NULL;
2510 char *vnamesrv = NULL;
ad196a9d 2511 char *smb_export = NULL;
c92ef6a2 2512 char *vsmbsrv = NULL;
ad196a9d 2513 const char *q;
b8e8af38 2514
0aa7a205 2515 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
10ae5a7a
JK		 2516 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2517 ret = -1;
2518 goto out;
8e4416af 2519 }
c92ef6a2 2520 if (get_param_value(buf, sizeof(buf), "ip", p)) {
3da6abd4 2521 int vnet_buflen = strlen(buf) + strlen("/24") + 1;
c92ef6a2 2522 /* emulate legacy parameter */
3da6abd4
BS		 2523 vnet = qemu_malloc(vnet_buflen);
2524 pstrcpy(vnet, vnet_buflen, buf);
2525 pstrcat(vnet, vnet_buflen, "/24");
c92ef6a2
JK		 2526 }
2527 if (get_param_value(buf, sizeof(buf), "net", p)) {
2528 vnet = qemu_strdup(buf);
2529 }
2530 if (get_param_value(buf, sizeof(buf), "host", p)) {
2531 vhost = qemu_strdup(buf);
2532 }
63a01ef8 2533 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
c92ef6a2 2534 vhostname = qemu_strdup(buf);
63a01ef8 2535 }
49ec9b40 2536 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
b8e8af38 2537 restricted = (buf[0] == 'y') ? 1 : 0;
49ec9b40 2538 }
c92ef6a2
JK		 2539 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2540 vdhcp_start = qemu_strdup(buf);
2541 }
2542 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2543 vnamesrv = qemu_strdup(buf);
49ec9b40 2544 }
ad196a9d
JK		 2545 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2546 tftp_export = qemu_strdup(buf);
2547 }
2548 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2549 bootfile = qemu_strdup(buf);
2550 }
2551 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2552 smb_export = qemu_strdup(buf);
c92ef6a2
JK		 2553 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2554 vsmbsrv = qemu_strdup(buf);
2555 }
ad196a9d
JK		 2556 }
2557 q = p;
2558 while (1) {
2559 config = qemu_malloc(sizeof(*config));
2560 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2561 "hostfwd", &q)) {
ad196a9d
JK		 2562 break;
2563 }
c92ef6a2 2564 config->flags = SLIRP_CFG_HOSTFWD;
ad196a9d
JK		 2565 config->next = slirp_configs;
2566 slirp_configs = config;
2567 config = NULL;
2568 }
2569 q = p;
2570 while (1) {
2571 config = qemu_malloc(sizeof(*config));
2572 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2573 "guestfwd", &q)) {
ad196a9d
JK		 2574 break;
2575 }
2576 config->flags = 0;
2577 config->next = slirp_configs;
2578 slirp_configs = config;
2579 config = NULL;
2580 }
2581 qemu_free(config);
63a01ef8 2582 vlan->nb_host_devs++;
c92ef6a2
JK		 2583 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2584 vhostname, tftp_export, bootfile, vdhcp_start,
2585 vnamesrv, smb_export, vsmbsrv);
2586 qemu_free(vnet);
2587 qemu_free(vhost);
2588 qemu_free(vhostname);
ad196a9d
JK		 2589 qemu_free(tftp_export);
2590 qemu_free(bootfile);
c92ef6a2
JK		 2591 qemu_free(vdhcp_start);
2592 qemu_free(vnamesrv);
ad196a9d 2593 qemu_free(smb_export);
c92ef6a2 2594 qemu_free(vsmbsrv);
8ca9217d 2595 } else if (!strcmp(device, "channel")) {
b1c99fcd 2596 if (TAILQ_EMPTY(&slirp_stacks)) {
ad196a9d
JK		 2597 struct slirp_config_str *config;
2598
2599 config = qemu_malloc(sizeof(*config));
2600 pstrcpy(config->str, sizeof(config->str), p);
c92ef6a2 2601 config->flags = SLIRP_CFG_LEGACY;
ad196a9d
JK		 2602 config->next = slirp_configs;
2603 slirp_configs = config;
2604 } else {
b1c99fcd 2605 slirp_guestfwd(TAILQ_FIRST(&slirp_stacks), mon, p, 1);
8ca9217d 2606 }
8ca9217d 2607 ret = 0;
63a01ef8
AL		 2608 } else
2609#endif
2610#ifdef _WIN32
2611 if (!strcmp(device, "tap")) {
8e4416af
AL		 2612 static const char * const tap_params[] = {
2613 "vlan", "name", "ifname", NULL
2614 };
63a01ef8 2615 char ifname[64];
8e4416af 2616
0aa7a205 2617 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
10ae5a7a
JK		 2618 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2619 ret = -1;
2620 goto out;
8e4416af 2621 }
63a01ef8 2622 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
10ae5a7a 2623 config_error(mon, "tap: no interface name\n");
771f1339
AL		 2624 ret = -1;
2625 goto out;
63a01ef8
AL		 2626 }
2627 vlan->nb_host_devs++;
7a9f6e4a 2628 ret = tap_win32_init(vlan, device, name, ifname);
63a01ef8 2629 } else
b29fe3ed 2630#elif defined (_AIX)
63a01ef8
AL		 2631#else
2632 if (!strcmp(device, "tap")) {
0aa7a205 2633 char ifname[64], chkbuf[64];
63a01ef8 2634 char setup_script[1024], down_script[1024];
4a77b25e 2635 TAPState *s;
63a01ef8
AL		 2636 int fd;
2637 vlan->nb_host_devs++;
2638 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2639 static const char * const fd_params[] = {
2640 "vlan", "name", "fd", "sndbuf", NULL
2641 };
c1d6eed7 2642 ret = -1;
0aa7a205 2643 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a 2644 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
10ae5a7a 2645 goto out;
8e4416af 2646 }
c1d6eed7
MM		 2647 fd = net_handle_fd_param(mon, buf);
2648 if (fd == -1) {
2649 goto out;
2650 }
63a01ef8 2651 fcntl(fd, F_SETFL, O_NONBLOCK);
4a77b25e 2652 s = net_tap_fd_init(vlan, device, name, fd);
c1d6eed7
MM		 2653 if (!s) {
2654 close(fd);
2655 }
63a01ef8 2656 } else {
8e4416af 2657 static const char * const tap_params[] = {
0df0ff6d 2658 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
8e4416af 2659 };
0aa7a205 2660 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
10ae5a7a
JK		 2661 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2662 ret = -1;
2663 goto out;
8e4416af 2664 }
63a01ef8
AL		 2665 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2666 ifname[0] = '\0';
2667 }
2668 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2669 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2670 }
2671 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2672 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2673 }
4a77b25e
MM		 2674 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2675 }
2676 if (s != NULL) {
fc5b81d1 2677 const char *sndbuf_str = NULL;
0df0ff6d 2678 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
fc5b81d1 2679 sndbuf_str = buf;
0df0ff6d 2680 }
fc5b81d1 2681 tap_set_sndbuf(s, sndbuf_str, mon);
4a77b25e
MM		 2682 ret = 0;
2683 } else {
2684 ret = -1;
63a01ef8
AL		 2685 }
2686 } else
2687#endif
2688 if (!strcmp(device, "socket")) {
0aa7a205 2689 char chkbuf[64];
63a01ef8 2690 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2691 static const char * const fd_params[] = {
2692 "vlan", "name", "fd", NULL
2693 };
63a01ef8 2694 int fd;
c1d6eed7 2695 ret = -1;
0aa7a205 2696 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a 2697 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
10ae5a7a 2698 goto out;
8e4416af 2699 }
c1d6eed7
MM		 2700 fd = net_handle_fd_param(mon, buf);
2701 if (fd == -1) {
2702 goto out;
2703 }
2704 if (!net_socket_fd_init(vlan, device, name, fd, 1)) {
2705 close(fd);
2706 goto out;
2707 }
2708 ret = 0;
63a01ef8 2709 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
8e4416af
AL		 2710 static const char * const listen_params[] = {
2711 "vlan", "name", "listen", NULL
2712 };
0aa7a205 2713 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
10ae5a7a
JK		 2714 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2715 ret = -1;
2716 goto out;
8e4416af 2717 }
7a9f6e4a 2718 ret = net_socket_listen_init(vlan, device, name, buf);
63a01ef8 2719 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
8e4416af
AL		 2720 static const char * const connect_params[] = {
2721 "vlan", "name", "connect", NULL
2722 };
0aa7a205 2723 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
10ae5a7a
JK		 2724 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2725 ret = -1;
2726 goto out;
8e4416af 2727 }
7a9f6e4a 2728 ret = net_socket_connect_init(vlan, device, name, buf);
63a01ef8 2729 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
8e4416af
AL		 2730 static const char * const mcast_params[] = {
2731 "vlan", "name", "mcast", NULL
2732 };
0aa7a205 2733 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
10ae5a7a
JK		 2734 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2735 ret = -1;
2736 goto out;
8e4416af 2737 }
7a9f6e4a 2738 ret = net_socket_mcast_init(vlan, device, name, buf);
63a01ef8 2739 } else {
10ae5a7a 2740 config_error(mon, "Unknown socket options: %s\n", p);
771f1339
AL		 2741 ret = -1;
2742 goto out;
63a01ef8
AL		 2743 }
2744 vlan->nb_host_devs++;
2745 } else
2746#ifdef CONFIG_VDE
2747 if (!strcmp(device, "vde")) {
8e4416af
AL		 2748 static const char * const vde_params[] = {
2749 "vlan", "name", "sock", "port", "group", "mode", NULL
2750 };
63a01ef8
AL		 2751 char vde_sock[1024], vde_group[512];
2752 int vde_port, vde_mode;
8e4416af 2753
0aa7a205 2754 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
10ae5a7a
JK		 2755 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2756 ret = -1;
2757 goto out;
8e4416af 2758 }
63a01ef8
AL		 2759 vlan->nb_host_devs++;
2760 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2761 vde_sock[0] = '\0';
2762 }
2763 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2764 vde_port = strtol(buf, NULL, 10);
2765 } else {
2766 vde_port = 0;
2767 }
2768 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2769 vde_group[0] = '\0';
2770 }
2771 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2772 vde_mode = strtol(buf, NULL, 8);
2773 } else {
2774 vde_mode = 0700;
2775 }
7a9f6e4a 2776 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
63a01ef8
AL		 2777 } else
2778#endif
bb9ea79e
AL		 2779 if (!strcmp(device, "dump")) {
2780 int len = 65536;
2781
2782 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2783 len = strtol(buf, NULL, 0);
2784 }
2785 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2786 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2787 }
10ae5a7a 2788 ret = net_dump_init(mon, vlan, device, name, buf, len);
bb9ea79e 2789 } else {
10ae5a7a 2790 config_error(mon, "Unknown network device: %s\n", device);
771f1339
AL		 2791 ret = -1;
2792 goto out;
63a01ef8
AL		 2793 }
2794 if (ret < 0) {
10ae5a7a 2795 config_error(mon, "Could not initialize device '%s'\n", device);
63a01ef8 2796 }
771f1339 2797out:
10ae5a7a 2798 qemu_free(name);
63a01ef8
AL		 2799 return ret;
2800}
2801
8b13c4a7
AL		 2802void net_client_uninit(NICInfo *nd)
2803{
2804 nd->vlan->nb_guest_devs--;
2805 nb_nics--;
2806 nd->used = 0;
2807 free((void *)nd->model);
2808}
2809
6f338c34
AL		 2810static int net_host_check_device(const char *device)
2811{
2812 int i;
bb9ea79e 2813 const char *valid_param_list[] = { "tap", "socket", "dump"
6f338c34
AL		 2814#ifdef CONFIG_SLIRP
2815 ,"user"
2816#endif
2817#ifdef CONFIG_VDE
2818 ,"vde"
2819#endif
2820 };
2821 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2822 if (!strncmp(valid_param_list[i], device,
2823 strlen(valid_param_list[i])))
2824 return 1;
2825 }
2826
2827 return 0;
2828}
2829
376253ec 2830void net_host_device_add(Monitor *mon, const char *device, const char *opts)
6f338c34
AL		 2831{
2832 if (!net_host_check_device(device)) {
376253ec 2833 monitor_printf(mon, "invalid host network device %s\n", device);
6f338c34
AL		 2834 return;
2835 }
10ae5a7a 2836 if (net_client_init(mon, device, opts ? opts : "") < 0) {
5c8be678
AL		 2837 monitor_printf(mon, "adding host network device %s failed\n", device);
2838 }
6f338c34
AL		 2839}
2840
376253ec 2841void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
6f338c34 2842{
6f338c34
AL		 2843 VLANClientState *vc;
2844
1a609520 2845 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
6f338c34 2846 if (!vc) {
6f338c34
AL		 2847 return;
2848 }
e8f1f9db
AL		 2849 if (!net_host_check_device(vc->model)) {
2850 monitor_printf(mon, "invalid host network device %s\n", device);
2851 return;
2852 }
6f338c34
AL		 2853 qemu_del_vlan_client(vc);
2854}
2855
63a01ef8
AL		 2856int net_client_parse(const char *str)
2857{
2858 const char *p;
2859 char *q;
2860 char device[64];
2861
2862 p = str;
2863 q = device;
2864 while (*p != '\0' && *p != ',') {
2865 if ((q - device) < sizeof(device) - 1)
2866 *q++ = *p;
2867 p++;
2868 }
2869 *q = '\0';
2870 if (*p == ',')
2871 p++;
2872
10ae5a7a 2873 return net_client_init(NULL, device, p);
63a01ef8
AL		 2874}
2875
406c8df3
GC		 2876void net_set_boot_mask(int net_boot_mask)
2877{
2878 int i;
2879
2880 /* Only the first four NICs may be bootable */
2881 net_boot_mask = net_boot_mask & 0xF;
2882
2883 for (i = 0; i < nb_nics; i++) {
2884 if (net_boot_mask & (1 << i)) {
2885 nd_table[i].bootable = 1;
2886 net_boot_mask &= ~(1 << i);
2887 }
2888 }
2889
2890 if (net_boot_mask) {
2891 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2892 exit(1);
2893 }
2894}
2895
376253ec 2896void do_info_network(Monitor *mon)
63a01ef8
AL		 2897{
2898 VLANState *vlan;
2899 VLANClientState *vc;
2900
2901 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
376253ec 2902 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
63a01ef8 2903 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
376253ec 2904 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
63a01ef8
AL		 2905 }
2906}
2907
c3cf0d3f 2908void do_set_link(Monitor *mon, const char *name, const char *up_or_down)
436e5e53
AL		 2909{
2910 VLANState *vlan;
2911 VLANClientState *vc = NULL;
2912
2913 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2914 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2915 if (strcmp(vc->name, name) == 0)
dd5de373
EI		 2916 goto done;
2917done:
436e5e53
AL		 2918
2919 if (!vc) {
7dc3fa09 2920 monitor_printf(mon, "could not find network device '%s'\n", name);
c3cf0d3f 2921 return;
436e5e53
AL		 2922 }
2923
2924 if (strcmp(up_or_down, "up") == 0)
2925 vc->link_down = 0;
2926 else if (strcmp(up_or_down, "down") == 0)
2927 vc->link_down = 1;
2928 else
376253ec
AL		 2929 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2930 "valid\n", up_or_down);
436e5e53 2931
34b25ca7
AL		 2932 if (vc->link_status_changed)
2933 vc->link_status_changed(vc);
436e5e53
AL		 2934}
2935
63a01ef8
AL		 2936void net_cleanup(void)
2937{
2938 VLANState *vlan;
2939
63a01ef8
AL		 2940 /* close network clients */
2941 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
b946a153 2942 VLANClientState *vc = vlan->first_client;
63a01ef8 2943
b946a153
AL		 2944 while (vc) {
2945 VLANClientState *next = vc->next;
63a01ef8 2946
b946a153
AL		 2947 qemu_del_vlan_client(vc);
2948
2949 vc = next;
63a01ef8
AL		 2950 }
2951 }
63a01ef8
AL		 2952}
2953
2954void net_client_check(void)
2955{
2956 VLANState *vlan;
2957
2958 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2959 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2960 continue;
2961 if (vlan->nb_guest_devs == 0)
2962 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2963 if (vlan->nb_host_devs == 0)
2964 fprintf(stderr,
2965 "Warning: vlan %d is not connected to host network\n",
2966 vlan->id);
2967 }
2968}
Qemu copy for testing