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net: Provide VLAN client lookup helper
[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
1a609520
JK		 392static VLANClientState *
393qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
394 const char *client_str)
395{
396 VLANState *vlan;
397 VLANClientState *vc;
398
399 vlan = qemu_find_vlan(vlan_id, 0);
400 if (!vlan) {
401 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
402 return NULL;
403 }
404
405 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
406 if (!strcmp(vc->name, client_str)) {
407 break;
408 }
409 }
410 if (!vc) {
411 monitor_printf(mon, "can't find device %s on VLAN %d\n",
412 client_str, vlan_id);
413 }
414
415 return vc;
416}
417
2e1e0641 418int qemu_can_send_packet(VLANClientState *sender)
63a01ef8 419{
2e1e0641 420 VLANState *vlan = sender->vlan;
63a01ef8
AL		 421 VLANClientState *vc;
422
2e1e0641
MM		 423 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
424 if (vc == sender) {
425 continue;
426 }
427
cda9046b 428 /* no can_receive() handler, they can always receive */
e3f5ec2b 429 if (!vc->can_receive || vc->can_receive(vc)) {
2e1e0641 430 return 1;
63a01ef8
AL		 431 }
432 }
433 return 0;
434}
435
3e021d40 436static int
764a4d1d 437qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
63a01ef8 438{
63a01ef8 439 VLANClientState *vc;
3e021d40 440 int ret = -1;
63a01ef8 441
e94667b9
MM		 442 sender->vlan->delivering = 1;
443
764a4d1d 444 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
3e021d40
MM		 445 ssize_t len;
446
447 if (vc == sender) {
448 continue;
764a4d1d 449 }
3e021d40
MM		 450
451 if (vc->link_down) {
452 ret = size;
453 continue;
454 }
455
456 len = vc->receive(vc, buf, size);
457
458 ret = (ret >= 0) ? ret : len;
764a4d1d 459 }
3e021d40 460
e94667b9
MM		 461 sender->vlan->delivering = 0;
462
3e021d40 463 return ret;
764a4d1d
AL		 464}
465
8cad5516
MM		 466void qemu_purge_queued_packets(VLANClientState *vc)
467{
468 VLANPacket **pp = &vc->vlan->send_queue;
469
470 while (*pp != NULL) {
471 VLANPacket *packet = *pp;
472
473 if (packet->sender == vc) {
474 *pp = packet->next;
475 qemu_free(packet);
476 } else {
477 pp = &packet->next;
478 }
479 }
480}
481
f3b6c7fc 482void qemu_flush_queued_packets(VLANClientState *vc)
e94667b9
MM		 483{
484 VLANPacket *packet;
485
486 while ((packet = vc->vlan->send_queue) != NULL) {
f3b6c7fc
MM		 487 int ret;
488
e94667b9 489 vc->vlan->send_queue = packet->next;
f3b6c7fc
MM		 490
491 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
492 if (ret == 0 && packet->sent_cb != NULL) {
493 packet->next = vc->vlan->send_queue;
494 vc->vlan->send_queue = packet;
495 break;
496 }
497
498 if (packet->sent_cb)
783527a9 499 packet->sent_cb(packet->sender, ret);
f3b6c7fc 500
e94667b9
MM		 501 qemu_free(packet);
502 }
503}
504
f3b6c7fc
MM		 505static void qemu_enqueue_packet(VLANClientState *sender,
506 const uint8_t *buf, int size,
507 NetPacketSent *sent_cb)
e94667b9
MM		 508{
509 VLANPacket *packet;
510
511 packet = qemu_malloc(sizeof(VLANPacket) + size);
512 packet->next = sender->vlan->send_queue;
513 packet->sender = sender;
514 packet->size = size;
f3b6c7fc 515 packet->sent_cb = sent_cb;
e94667b9
MM		 516 memcpy(packet->data, buf, size);
517 sender->vlan->send_queue = packet;
518}
519
f3b6c7fc
MM		 520ssize_t qemu_send_packet_async(VLANClientState *sender,
521 const uint8_t *buf, int size,
522 NetPacketSent *sent_cb)
764a4d1d 523{
f3b6c7fc 524 int ret;
764a4d1d 525
f3b6c7fc
MM		 526 if (sender->link_down) {
527 return size;
528 }
436e5e53 529
63a01ef8 530#ifdef DEBUG_NET
f3b6c7fc 531 printf("vlan %d send:\n", sender->vlan->id);
63a01ef8
AL		 532 hex_dump(stdout, buf, size);
533#endif
f3b6c7fc
MM		 534
535 if (sender->vlan->delivering) {
536 qemu_enqueue_packet(sender, buf, size, NULL);
537 return size;
538 }
539
540 ret = qemu_deliver_packet(sender, buf, size);
541 if (ret == 0 && sent_cb != NULL) {
542 qemu_enqueue_packet(sender, buf, size, sent_cb);
543 return 0;
63a01ef8 544 }
e94667b9 545
f3b6c7fc
MM		 546 qemu_flush_queued_packets(sender);
547
548 return ret;
549}
550
551void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
552{
553 qemu_send_packet_async(vc, buf, size, NULL);
63a01ef8
AL		 554}
555
fbe78f4f
AL		 556static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
557 int iovcnt)
558{
559 uint8_t buffer[4096];
560 size_t offset = 0;
561 int i;
562
563 for (i = 0; i < iovcnt; i++) {
564 size_t len;
565
566 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
567 memcpy(buffer + offset, iov[i].iov_base, len);
568 offset += len;
569 }
570
f3b6c7fc 571 return vc->receive(vc, buffer, offset);
fbe78f4f
AL		 572}
573
e0e7877a
AL		 574static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
575{
576 size_t offset = 0;
577 int i;
578
579 for (i = 0; i < iovcnt; i++)
580 offset += iov[i].iov_len;
581 return offset;
582}
583
e94667b9
MM		 584static int qemu_deliver_packet_iov(VLANClientState *sender,
585 const struct iovec *iov, int iovcnt)
fbe78f4f 586{
fbe78f4f 587 VLANClientState *vc;
e94667b9
MM		 588 int ret = -1;
589
590 sender->vlan->delivering = 1;
591
592 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
593 ssize_t len;
594
595 if (vc == sender) {
596 continue;
597 }
598
599 if (vc->link_down) {
600 ret = calc_iov_length(iov, iovcnt);
601 continue;
602 }
603
604 if (vc->receive_iov) {
605 len = vc->receive_iov(vc, iov, iovcnt);
606 } else {
607 len = vc_sendv_compat(vc, iov, iovcnt);
608 }
609
610 ret = (ret >= 0) ? ret : len;
611 }
612
613 sender->vlan->delivering = 0;
614
615 return ret;
616}
617
618static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
f3b6c7fc
MM		 619 const struct iovec *iov, int iovcnt,
620 NetPacketSent *sent_cb)
e94667b9 621{
c27ff608 622 VLANPacket *packet;
e94667b9 623 size_t max_len = 0;
c27ff608 624 int i;
fbe78f4f 625
e94667b9 626 max_len = calc_iov_length(iov, iovcnt);
e0e7877a 627
e94667b9
MM		 628 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
629 packet->next = sender->vlan->send_queue;
630 packet->sender = sender;
f3b6c7fc 631 packet->sent_cb = sent_cb;
e94667b9 632 packet->size = 0;
c27ff608 633
e94667b9
MM		 634 for (i = 0; i < iovcnt; i++) {
635 size_t len = iov[i].iov_len;
c27ff608 636
e94667b9
MM		 637 memcpy(packet->data + packet->size, iov[i].iov_base, len);
638 packet->size += len;
639 }
fbe78f4f 640
e94667b9 641 sender->vlan->send_queue = packet;
fbe78f4f 642
e94667b9
MM		 643 return packet->size;
644}
fbe78f4f 645
f3b6c7fc
MM		 646ssize_t qemu_sendv_packet_async(VLANClientState *sender,
647 const struct iovec *iov, int iovcnt,
648 NetPacketSent *sent_cb)
e94667b9
MM		 649{
650 int ret;
651
652 if (sender->link_down) {
653 return calc_iov_length(iov, iovcnt);
654 }
655
656 if (sender->vlan->delivering) {
f3b6c7fc 657 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
fbe78f4f
AL		 658 }
659
e94667b9 660 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
f3b6c7fc
MM		 661 if (ret == 0 && sent_cb != NULL) {
662 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
663 return 0;
664 }
e94667b9
MM		 665
666 qemu_flush_queued_packets(sender);
667
668 return ret;
fbe78f4f
AL		 669}
670
f3b6c7fc
MM		 671ssize_t
672qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
673{
674 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
675}
676
10ae5a7a
JK		 677static void config_error(Monitor *mon, const char *fmt, ...)
678{
679 va_list ap;
680
681 va_start(ap, fmt);
682 if (mon) {
683 monitor_vprintf(mon, fmt, ap);
684 } else {
685 fprintf(stderr, "qemu: ");
686 vfprintf(stderr, fmt, ap);
687 exit(1);
688 }
689 va_end(ap);
690}
691
63a01ef8
AL		 692#if defined(CONFIG_SLIRP)
693
694/* slirp network adapter */
695
c92ef6a2
JK		 696#define SLIRP_CFG_HOSTFWD 1
697#define SLIRP_CFG_LEGACY 2
ad196a9d 698
b8e8af38
JK		 699struct slirp_config_str {
700 struct slirp_config_str *next;
ad196a9d
JK		 701 int flags;
702 char str[1024];
c92ef6a2 703 int legacy_format;
b8e8af38
JK		 704};
705
9f8bd042 706typedef struct SlirpState {
b1c99fcd 707 TAILQ_ENTRY(SlirpState) entry;
9f8bd042
JK		 708 VLANClientState *vc;
709 Slirp *slirp;
28432466
JK		 710#ifndef _WIN32
711 char smb_dir[128];
712#endif
9f8bd042
JK		 713} SlirpState;
714
ad196a9d
JK		 715static struct slirp_config_str *slirp_configs;
716const char *legacy_tftp_prefix;
717const char *legacy_bootp_filename;
b1c99fcd
JK		 718static TAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
719 TAILQ_HEAD_INITIALIZER(slirp_stacks);
63a01ef8 720
9f8bd042 721static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
3c6a0580 722 int legacy_format);
9f8bd042 723static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
c92ef6a2 724 int legacy_format);
ad196a9d 725
c5b76b38 726#ifndef _WIN32
ad196a9d
JK		 727static const char *legacy_smb_export;
728
492efabd 729static void slirp_smb(SlirpState *s, Monitor *mon, const char *exported_dir,
9f8bd042 730 struct in_addr vserver_addr);
28432466
JK		 731static void slirp_smb_cleanup(SlirpState *s);
732#else
733static inline void slirp_smb_cleanup(SlirpState *s) { }
c5b76b38 734#endif
b8e8af38 735
9f8bd042 736int slirp_can_output(void *opaque)
63a01ef8 737{
9f8bd042
JK		 738 SlirpState *s = opaque;
739
740 return qemu_can_send_packet(s->vc);
63a01ef8
AL		 741}
742
9f8bd042 743void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
63a01ef8 744{
9f8bd042
JK		 745 SlirpState *s = opaque;
746
63a01ef8
AL		 747#ifdef DEBUG_SLIRP
748 printf("slirp output:\n");
749 hex_dump(stdout, pkt, pkt_len);
750#endif
9f8bd042 751 qemu_send_packet(s->vc, pkt, pkt_len);
63a01ef8
AL		 752}
753
4f1c942b 754static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 755{
9f8bd042
JK		 756 SlirpState *s = vc->opaque;
757
63a01ef8
AL		 758#ifdef DEBUG_SLIRP
759 printf("slirp input:\n");
760 hex_dump(stdout, buf, size);
761#endif
9f8bd042 762 slirp_input(s->slirp, buf, size);
4f1c942b 763 return size;
63a01ef8
AL		 764}
765
8d6249a7
AL		 766static void net_slirp_cleanup(VLANClientState *vc)
767{
ad0d8c4c
JK		 768 SlirpState *s = vc->opaque;
769
770 slirp_cleanup(s->slirp);
28432466 771 slirp_smb_cleanup(s);
b1c99fcd 772 TAILQ_REMOVE(&slirp_stacks, s, entry);
ad0d8c4c 773 qemu_free(s);
8d6249a7
AL		 774}
775
ad196a9d 776static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
c92ef6a2
JK		 777 const char *name, int restricted,
778 const char *vnetwork, const char *vhost,
779 const char *vhostname, const char *tftp_export,
780 const char *bootfile, const char *vdhcp_start,
781 const char *vnameserver, const char *smb_export,
782 const char *vsmbserver)
63a01ef8 783{
ad0d8c4c
JK		 784 /* default settings according to historic slirp */
785 struct in_addr net = { .s_addr = htonl(0x0a000000) }; /* 10.0.0.0 */
786 struct in_addr mask = { .s_addr = htonl(0xff000000) }; /* 255.0.0.0 */
787 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
788 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
789 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
c92ef6a2 790#ifndef _WIN32
ad0d8c4c 791 struct in_addr smbsrv = { .s_addr = 0 };
c92ef6a2 792#endif
ad0d8c4c
JK		 793 SlirpState *s;
794 char buf[20];
795 uint32_t addr;
796 int shift;
797 char *end;
798
799 if (!tftp_export) {
800 tftp_export = legacy_tftp_prefix;
801 }
802 if (!bootfile) {
803 bootfile = legacy_bootp_filename;
804 }
c92ef6a2 805
ad0d8c4c
JK		 806 if (vnetwork) {
807 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
808 if (!inet_aton(vnetwork, &net)) {
809 return -1;
810 }
811 addr = ntohl(net.s_addr);
812 if (!(addr & 0x80000000)) {
813 mask.s_addr = htonl(0xff000000); /* class A */
814 } else if ((addr & 0xfff00000) == 0xac100000) {
815 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
816 } else if ((addr & 0xc0000000) == 0x80000000) {
817 mask.s_addr = htonl(0xffff0000); /* class B */
818 } else if ((addr & 0xffff0000) == 0xc0a80000) {
819 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
820 } else if ((addr & 0xffff0000) == 0xc6120000) {
821 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
822 } else if ((addr & 0xe0000000) == 0xe0000000) {
823 mask.s_addr = htonl(0xffffff00); /* class C */
c92ef6a2 824 } else {
ad0d8c4c
JK		 825 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
826 }
827 } else {
828 if (!inet_aton(buf, &net)) {
829 return -1;
830 }
831 shift = strtol(vnetwork, &end, 10);
832 if (*end != '\0') {
833 if (!inet_aton(vnetwork, &mask)) {
c92ef6a2 834 return -1;
c92ef6a2 835 }
ad0d8c4c
JK		 836 } else if (shift < 4 || shift > 32) {
837 return -1;
838 } else {
839 mask.s_addr = htonl(0xffffffff << (32 - shift));
c92ef6a2 840 }
c92ef6a2 841 }
ad0d8c4c
JK		 842 net.s_addr &= mask.s_addr;
843 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
844 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
845 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
846 }
c92ef6a2 847
ad0d8c4c
JK		 848 if (vhost && !inet_aton(vhost, &host)) {
849 return -1;
850 }
851 if ((host.s_addr & mask.s_addr) != net.s_addr) {
852 return -1;
853 }
c92ef6a2 854
ad0d8c4c
JK		 855 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
856 return -1;
857 }
858 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
859 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
860 return -1;
861 }
c92ef6a2 862
ad0d8c4c
JK		 863 if (vnameserver && !inet_aton(vnameserver, &dns)) {
864 return -1;
865 }
866 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
867 dns.s_addr == host.s_addr) {
868 return -1;
869 }
c92ef6a2
JK		 870
871#ifndef _WIN32
ad0d8c4c
JK		 872 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
873 return -1;
874 }
c92ef6a2
JK		 875#endif
876
ad0d8c4c
JK		 877 s = qemu_mallocz(sizeof(SlirpState));
878 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
879 tftp_export, bootfile, dhcp, dns, s);
b1c99fcd 880 TAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
b8e8af38 881
ad0d8c4c
JK		 882 while (slirp_configs) {
883 struct slirp_config_str *config = slirp_configs;
b8e8af38 884
ad0d8c4c
JK		 885 if (config->flags & SLIRP_CFG_HOSTFWD) {
886 slirp_hostfwd(s, mon, config->str,
887 config->flags & SLIRP_CFG_LEGACY);
888 } else {
889 slirp_guestfwd(s, mon, config->str,
890 config->flags & SLIRP_CFG_LEGACY);
b8e8af38 891 }
ad0d8c4c
JK		 892 slirp_configs = config->next;
893 qemu_free(config);
894 }
b8e8af38 895#ifndef _WIN32
ad0d8c4c
JK		 896 if (!smb_export) {
897 smb_export = legacy_smb_export;
898 }
899 if (smb_export) {
492efabd 900 slirp_smb(s, mon, smb_export, smbsrv);
63a01ef8 901 }
ad0d8c4c 902#endif
b8e8af38 903
9f8bd042
JK		 904 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
905 net_slirp_cleanup, s);
906 s->vc->info_str[0] = '\0';
63a01ef8
AL		 907 return 0;
908}
909
3c6a0580 910void net_slirp_hostfwd_remove(Monitor *mon, const char *src_str)
c1261d8d 911{
3c6a0580 912 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c1261d8d
AG		 913 int host_port;
914 char buf[256] = "";
3c6a0580 915 const char *p = src_str;
c1261d8d 916 int is_udp = 0;
9c12a6f2 917 int err;
c1261d8d 918
b1c99fcd 919 if (TAILQ_EMPTY(&slirp_stacks)) {
f3546deb 920 monitor_printf(mon, "user mode network stack not in use\n");
c1261d8d 921 return;
f3546deb 922 }
c1261d8d 923
3c6a0580 924 if (!src_str || !src_str[0])
c1261d8d
AG		 925 goto fail_syntax;
926
927 get_str_sep(buf, sizeof(buf), &p, ':');
928
929 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
930 is_udp = 0;
931 } else if (!strcmp(buf, "udp")) {
932 is_udp = 1;
933 } else {
934 goto fail_syntax;
935 }
936
3c6a0580
JK		 937 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
938 goto fail_syntax;
939 }
940 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
941 goto fail_syntax;
942 }
943
c1261d8d
AG		 944 host_port = atoi(p);
945
b1c99fcd 946 err = slirp_remove_hostfwd(TAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
9f8bd042 947 host_addr, host_port);
c1261d8d 948
9c12a6f2
JK		 949 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
950 err ? "removed" : "not found");
c1261d8d
AG		 951 return;
952
953 fail_syntax:
954 monitor_printf(mon, "invalid format\n");
955}
956
9f8bd042 957static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
3c6a0580 958 int legacy_format)
63a01ef8 959{
3c6a0580 960 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c92ef6a2 961 struct in_addr guest_addr = { .s_addr = 0 };
63a01ef8 962 int host_port, guest_port;
b8e8af38 963 const char *p;
c92ef6a2 964 char buf[256];
b8e8af38 965 int is_udp;
c92ef6a2 966 char *end;
1c6ed9f3 967
63a01ef8 968 p = redir_str;
b8e8af38 969 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 970 goto fail_syntax;
b8e8af38 971 }
d4ebe193 972 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
63a01ef8
AL		 973 is_udp = 0;
974 } else if (!strcmp(buf, "udp")) {
975 is_udp = 1;
976 } else {
d4ebe193 977 goto fail_syntax;
63a01ef8
AL		 978 }
979
3c6a0580
JK		 980 if (!legacy_format) {
981 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
982 goto fail_syntax;
983 }
984 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
985 goto fail_syntax;
986 }
987 }
988
989 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
d4ebe193 990 goto fail_syntax;
b8e8af38 991 }
c92ef6a2
JK		 992 host_port = strtol(buf, &end, 0);
993 if (*end != '\0' || host_port < 1 || host_port > 65535) {
d4ebe193 994 goto fail_syntax;
b8e8af38 995 }
63a01ef8 996
b8e8af38 997 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 998 goto fail_syntax;
b8e8af38 999 }
c92ef6a2 1000 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
d4ebe193 1001 goto fail_syntax;
b8e8af38 1002 }
63a01ef8 1003
c92ef6a2
JK		 1004 guest_port = strtol(p, &end, 0);
1005 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
d4ebe193 1006 goto fail_syntax;
b8e8af38 1007 }
63a01ef8 1008
9f8bd042
JK		 1009 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1010 guest_port) < 0) {
c92ef6a2
JK		 1011 config_error(mon, "could not set up host forwarding rule '%s'\n",
1012 redir_str);
63a01ef8
AL		 1013 }
1014 return;
d4ebe193
AL		 1015
1016 fail_syntax:
c92ef6a2 1017 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
63a01ef8
AL		 1018}
1019
f3546deb 1020void net_slirp_hostfwd_add(Monitor *mon, const char *redir_str)
b8e8af38 1021{
b1c99fcd 1022 if (TAILQ_EMPTY(&slirp_stacks)) {
f3546deb 1023 monitor_printf(mon, "user mode network stack not in use\n");
b8e8af38
JK		 1024 return;
1025 }
1026
b1c99fcd 1027 slirp_hostfwd(TAILQ_FIRST(&slirp_stacks), mon, redir_str, 0);
f3546deb
JK		 1028}
1029
1030void net_slirp_redir(const char *redir_str)
1031{
1032 struct slirp_config_str *config;
1033
b1c99fcd 1034 if (TAILQ_EMPTY(&slirp_stacks)) {
f3546deb
JK		 1035 config = qemu_malloc(sizeof(*config));
1036 pstrcpy(config->str, sizeof(config->str), redir_str);
3c6a0580 1037 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
f3546deb
JK		 1038 config->next = slirp_configs;
1039 slirp_configs = config;
b8e8af38
JK		 1040 return;
1041 }
1042
b1c99fcd 1043 slirp_hostfwd(TAILQ_FIRST(&slirp_stacks), NULL, redir_str, 1);
b8e8af38
JK		 1044}
1045
63a01ef8
AL		 1046#ifndef _WIN32
1047
63a01ef8 1048/* automatic user mode samba server configuration */
28432466 1049static void slirp_smb_cleanup(SlirpState *s)
63a01ef8 1050{
28432466 1051 char cmd[128];
09c18925 1052
28432466
JK		 1053 if (s->smb_dir[0] != '\0') {
1054 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1055 system(cmd);
1056 s->smb_dir[0] = '\0';
1057 }
63a01ef8
AL		 1058}
1059
492efabd 1060static void slirp_smb(SlirpState* s, Monitor *mon, const char *exported_dir,
9f8bd042 1061 struct in_addr vserver_addr)
63a01ef8 1062{
28432466
JK		 1063 static int instance;
1064 char smb_conf[128];
1065 char smb_cmdline[128];
63a01ef8
AL		 1066 FILE *f;
1067
28432466
JK		 1068 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1069 (long)getpid(), instance++);
1070 if (mkdir(s->smb_dir, 0700) < 0) {
1071 config_error(mon, "could not create samba server dir '%s'\n",
1072 s->smb_dir);
492efabd 1073 return;
63a01ef8 1074 }
28432466 1075 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
63a01ef8
AL		 1076
1077 f = fopen(smb_conf, "w");
1078 if (!f) {
28432466 1079 slirp_smb_cleanup(s);
492efabd
JK		 1080 config_error(mon, "could not create samba server "
1081 "configuration file '%s'\n", smb_conf);
1082 return;
63a01ef8
AL		 1083 }
1084 fprintf(f,
1085 "[global]\n"
1086 "private dir=%s\n"
1087 "smb ports=0\n"
1088 "socket address=127.0.0.1\n"
1089 "pid directory=%s\n"
1090 "lock directory=%s\n"
1091 "log file=%s/log.smbd\n"
1092 "smb passwd file=%s/smbpasswd\n"
1093 "security = share\n"
1094 "[qemu]\n"
1095 "path=%s\n"
1096 "read only=no\n"
1097 "guest ok=yes\n",
28432466
JK		 1098 s->smb_dir,
1099 s->smb_dir,
1100 s->smb_dir,
1101 s->smb_dir,
1102 s->smb_dir,
63a01ef8
AL		 1103 exported_dir
1104 );
1105 fclose(f);
63a01ef8
AL		 1106
1107 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1108 SMBD_COMMAND, smb_conf);
1109
9f8bd042 1110 if (slirp_add_exec(s->slirp, 0, smb_cmdline, vserver_addr, 139) < 0) {
28432466 1111 slirp_smb_cleanup(s);
492efabd 1112 config_error(mon, "conflicting/invalid smbserver address\n");
c92ef6a2 1113 }
63a01ef8
AL		 1114}
1115
ad196a9d 1116/* automatic user mode samba server configuration (legacy interface) */
b8e8af38
JK		 1117void net_slirp_smb(const char *exported_dir)
1118{
c92ef6a2
JK		 1119 struct in_addr vserver_addr = { .s_addr = 0 };
1120
ad196a9d 1121 if (legacy_smb_export) {
b8e8af38
JK		 1122 fprintf(stderr, "-smb given twice\n");
1123 exit(1);
1124 }
ad196a9d 1125 legacy_smb_export = exported_dir;
b1c99fcd 1126 if (!TAILQ_EMPTY(&slirp_stacks)) {
492efabd
JK		 1127 slirp_smb(TAILQ_FIRST(&slirp_stacks), NULL, exported_dir,
1128 vserver_addr);
b8e8af38
JK		 1129 }
1130}
1131
63a01ef8 1132#endif /* !defined(_WIN32) */
b8e8af38 1133
c92ef6a2 1134struct GuestFwd {
8ca9217d 1135 CharDriverState *hd;
c92ef6a2 1136 struct in_addr server;
8ca9217d 1137 int port;
9f8bd042 1138 Slirp *slirp;
511d2b14 1139};
8ca9217d 1140
c92ef6a2 1141static int guestfwd_can_read(void *opaque)
8ca9217d 1142{
c92ef6a2 1143 struct GuestFwd *fwd = opaque;
9f8bd042 1144 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
8ca9217d
AL		 1145}
1146
c92ef6a2 1147static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
8ca9217d 1148{
c92ef6a2 1149 struct GuestFwd *fwd = opaque;
9f8bd042 1150 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
8ca9217d
AL		 1151}
1152
9f8bd042 1153static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
c92ef6a2 1154 int legacy_format)
ad196a9d 1155{
c92ef6a2
JK		 1156 struct in_addr server = { .s_addr = 0 };
1157 struct GuestFwd *fwd;
1158 const char *p;
1159 char buf[128];
1160 char *end;
ad196a9d
JK		 1161 int port;
1162
c92ef6a2
JK		 1163 p = config_str;
1164 if (legacy_format) {
1165 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1166 goto fail_syntax;
1167 }
1168 } else {
1169 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1170 goto fail_syntax;
1171 }
1172 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1173 goto fail_syntax;
1174 }
1175 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1176 goto fail_syntax;
1177 }
1178 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1179 goto fail_syntax;
1180 }
1181 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1182 goto fail_syntax;
1183 }
1184 }
1185 port = strtol(buf, &end, 10);
1186 if (*end != '\0' || port < 1 || port > 65535) {
1187 goto fail_syntax;
ad196a9d 1188 }
ad196a9d 1189
c92ef6a2
JK		 1190 fwd = qemu_malloc(sizeof(struct GuestFwd));
1191 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1192 fwd->hd = qemu_chr_open(buf, p, NULL);
1193 if (!fwd->hd) {
1194 config_error(mon, "could not open guest forwarding device '%s'\n",
1195 buf);
1196 qemu_free(fwd);
ad196a9d
JK		 1197 return;
1198 }
c92ef6a2
JK		 1199 fwd->server = server;
1200 fwd->port = port;
9f8bd042 1201 fwd->slirp = s->slirp;
ad196a9d 1202
9f8bd042 1203 if (slirp_add_exec(s->slirp, 3, fwd->hd, server, port) < 0) {
c92ef6a2
JK		 1204 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1205 "rule '%s'\n", config_str);
1206 qemu_free(fwd);
1207 return;
1208 }
1209 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1210 NULL, fwd);
ad196a9d 1211 return;
c92ef6a2
JK		 1212
1213 fail_syntax:
1214 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
ad196a9d
JK		 1215}
1216
6dbe553f
JK		 1217void do_info_usernet(Monitor *mon)
1218{
b1c99fcd 1219 SlirpState *s;
9f8bd042 1220
b1c99fcd
JK		 1221 TAILQ_FOREACH(s, &slirp_stacks, entry) {
1222 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1223 slirp_connection_info(s->slirp, mon);
9f8bd042 1224 }
6dbe553f
JK		 1225}
1226
63a01ef8
AL		 1227#endif /* CONFIG_SLIRP */
1228
1229#if !defined(_WIN32)
1230
1231typedef struct TAPState {
1232 VLANClientState *vc;
1233 int fd;
1234 char down_script[1024];
973cbd37 1235 char down_script_arg[128];
5b01e886 1236 uint8_t buf[4096];
b664e367 1237 unsigned int read_poll : 1;
1f7babf6 1238 unsigned int write_poll : 1;
63a01ef8
AL		 1239} TAPState;
1240
b946a153
AL		 1241static int launch_script(const char *setup_script, const char *ifname, int fd);
1242
b664e367
MM		 1243static int tap_can_send(void *opaque);
1244static void tap_send(void *opaque);
1f7babf6 1245static void tap_writable(void *opaque);
b664e367
MM		 1246
1247static void tap_update_fd_handler(TAPState *s)
1248{
1249 qemu_set_fd_handler2(s->fd,
1250 s->read_poll ? tap_can_send : NULL,
1251 s->read_poll ? tap_send : NULL,
1f7babf6 1252 s->write_poll ? tap_writable : NULL,
b664e367
MM		 1253 s);
1254}
1255
1256static void tap_read_poll(TAPState *s, int enable)
1257{
1258 s->read_poll = !!enable;
1259 tap_update_fd_handler(s);
1260}
1261
1f7babf6
MM		 1262static void tap_write_poll(TAPState *s, int enable)
1263{
1264 s->write_poll = !!enable;
1265 tap_update_fd_handler(s);
1266}
1267
1268static void tap_writable(void *opaque)
1269{
1270 TAPState *s = opaque;
1271
1272 tap_write_poll(s, 0);
1273
1274 qemu_flush_queued_packets(s->vc);
1275}
1276
e3f5ec2b 1277static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
b535b7b2
AL		 1278 int iovcnt)
1279{
e3f5ec2b 1280 TAPState *s = vc->opaque;
b535b7b2
AL		 1281 ssize_t len;
1282
1283 do {
1284 len = writev(s->fd, iov, iovcnt);
1f7babf6
MM		 1285 } while (len == -1 && errno == EINTR);
1286
1287 if (len == -1 && errno == EAGAIN) {
1288 tap_write_poll(s, 1);
1289 return 0;
1290 }
b535b7b2
AL		 1291
1292 return len;
1293}
b535b7b2 1294
4f1c942b 1295static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1296{
e3f5ec2b 1297 TAPState *s = vc->opaque;
4f1c942b
MM		 1298 ssize_t len;
1299
1300 do {
1301 len = write(s->fd, buf, size);
1302 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1303
1304 return len;
63a01ef8
AL		 1305}
1306
3471b757
MM		 1307static int tap_can_send(void *opaque)
1308{
1309 TAPState *s = opaque;
1310
1311 return qemu_can_send_packet(s->vc);
1312}
1313
63a01ef8 1314#ifdef __sun__
5a6d8815
MM		 1315static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1316{
63a01ef8
AL		 1317 struct strbuf sbuf;
1318 int f = 0;
5a6d8815
MM		 1319
1320 sbuf.maxlen = maxlen;
3f4cb3d3 1321 sbuf.buf = (char *)buf;
5a6d8815
MM		 1322
1323 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1324}
63a01ef8 1325#else
5a6d8815
MM		 1326static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1327{
1328 return read(tapfd, buf, maxlen);
1329}
63a01ef8 1330#endif
5a6d8815 1331
783527a9 1332static void tap_send_completed(VLANClientState *vc, ssize_t len)
e19eb224
MM		 1333{
1334 TAPState *s = vc->opaque;
b664e367 1335 tap_read_poll(s, 1);
e19eb224
MM		 1336}
1337
5a6d8815
MM		 1338static void tap_send(void *opaque)
1339{
1340 TAPState *s = opaque;
5a6d8815
MM		 1341 int size;
1342
e19eb224
MM		 1343 do {
1344 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1345 if (size <= 0) {
1346 break;
1347 }
1348
1349 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1350 if (size == 0) {
b664e367 1351 tap_read_poll(s, 0);
e19eb224
MM		 1352 }
1353 } while (size > 0);
63a01ef8
AL		 1354}
1355
0df0ff6d
MM		 1356static void tap_set_sndbuf(TAPState *s, int sndbuf, Monitor *mon)
1357{
1358#ifdef TUNSETSNDBUF
1359 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1) {
1360 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1361 strerror(errno));
1362 }
1363#else
1364 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1365#endif
1366}
1367
b946a153
AL		 1368static void tap_cleanup(VLANClientState *vc)
1369{
1370 TAPState *s = vc->opaque;
1371
b9adce2c
MM		 1372 qemu_purge_queued_packets(vc);
1373
b946a153
AL		 1374 if (s->down_script[0])
1375 launch_script(s->down_script, s->down_script_arg, s->fd);
1376
b664e367 1377 tap_read_poll(s, 0);
1f7babf6 1378 tap_write_poll(s, 0);
b946a153
AL		 1379 close(s->fd);
1380 qemu_free(s);
1381}
1382
63a01ef8
AL		 1383/* fd support */
1384
7a9f6e4a
AL		 1385static TAPState *net_tap_fd_init(VLANState *vlan,
1386 const char *model,
1387 const char *name,
1388 int fd)
63a01ef8
AL		 1389{
1390 TAPState *s;
1391
1392 s = qemu_mallocz(sizeof(TAPState));
63a01ef8 1393 s->fd = fd;
463af534
MM		 1394 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1395 tap_receive_iov, tap_cleanup, s);
b664e367 1396 tap_read_poll(s, 1);
7cb7434b 1397 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
63a01ef8
AL		 1398 return s;
1399}
1400
179a2c19 1401#if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
63a01ef8
AL		 1402static int tap_open(char *ifname, int ifname_size)
1403{
1404 int fd;
1405 char *dev;
1406 struct stat s;
1407
1408 TFR(fd = open("/dev/tap", O_RDWR));
1409 if (fd < 0) {
1410 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1411 return -1;
1412 }
1413
1414 fstat(fd, &s);
1415 dev = devname(s.st_rdev, S_IFCHR);
1416 pstrcpy(ifname, ifname_size, dev);
1417
1418 fcntl(fd, F_SETFL, O_NONBLOCK);
1419 return fd;
1420}
1421#elif defined(__sun__)
1422#define TUNNEWPPA (('T'<<16) | 0x0001)
1423/*
1424 * Allocate TAP device, returns opened fd.
1425 * Stores dev name in the first arg(must be large enough).
1426 */
3f4cb3d3 1427static int tap_alloc(char *dev, size_t dev_size)
63a01ef8
AL		 1428{
1429 int tap_fd, if_fd, ppa = -1;
1430 static int ip_fd = 0;
1431 char *ptr;
1432
1433 static int arp_fd = 0;
1434 int ip_muxid, arp_muxid;
1435 struct strioctl strioc_if, strioc_ppa;
1436 int link_type = I_PLINK;;
1437 struct lifreq ifr;
1438 char actual_name[32] = "";
1439
1440 memset(&ifr, 0x0, sizeof(ifr));
1441
1442 if( *dev ){
1443 ptr = dev;
47398b9c 1444 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
63a01ef8
AL		 1445 ppa = atoi(ptr);
1446 }
1447
1448 /* Check if IP device was opened */
1449 if( ip_fd )
1450 close(ip_fd);
1451
1452 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1453 if (ip_fd < 0) {
1454 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1455 return -1;
1456 }
1457
1458 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1459 if (tap_fd < 0) {
1460 syslog(LOG_ERR, "Can't open /dev/tap");
1461 return -1;
1462 }
1463
1464 /* Assign a new PPA and get its unit number. */
1465 strioc_ppa.ic_cmd = TUNNEWPPA;
1466 strioc_ppa.ic_timout = 0;
1467 strioc_ppa.ic_len = sizeof(ppa);
1468 strioc_ppa.ic_dp = (char *)&ppa;
1469 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1470 syslog (LOG_ERR, "Can't assign new interface");
1471
1472 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1473 if (if_fd < 0) {
1474 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1475 return -1;
1476 }
1477 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1478 syslog(LOG_ERR, "Can't push IP module");
1479 return -1;
1480 }
1481
1482 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1483 syslog(LOG_ERR, "Can't get flags\n");
1484
1485 snprintf (actual_name, 32, "tap%d", ppa);
1486 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1487
1488 ifr.lifr_ppa = ppa;
1489 /* Assign ppa according to the unit number returned by tun device */
1490
1491 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1492 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1493 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1494 syslog (LOG_ERR, "Can't get flags\n");
1495 /* Push arp module to if_fd */
1496 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1497 syslog (LOG_ERR, "Can't push ARP module (2)");
1498
1499 /* Push arp module to ip_fd */
1500 if (ioctl (ip_fd, I_POP, NULL) < 0)
1501 syslog (LOG_ERR, "I_POP failed\n");
1502 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1503 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1504 /* Open arp_fd */
1505 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1506 if (arp_fd < 0)
1507 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1508
1509 /* Set ifname to arp */
1510 strioc_if.ic_cmd = SIOCSLIFNAME;
1511 strioc_if.ic_timout = 0;
1512 strioc_if.ic_len = sizeof(ifr);
1513 strioc_if.ic_dp = (char *)&ifr;
1514 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1515 syslog (LOG_ERR, "Can't set ifname to arp\n");
1516 }
1517
1518 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1519 syslog(LOG_ERR, "Can't link TAP device to IP");
1520 return -1;
1521 }
1522
1523 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1524 syslog (LOG_ERR, "Can't link TAP device to ARP");
1525
1526 close (if_fd);
1527
1528 memset(&ifr, 0x0, sizeof(ifr));
1529 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1530 ifr.lifr_ip_muxid = ip_muxid;
1531 ifr.lifr_arp_muxid = arp_muxid;
1532
1533 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1534 {
1535 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1536 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1537 syslog (LOG_ERR, "Can't set multiplexor id");
1538 }
1539
1540 snprintf(dev, dev_size, "tap%d", ppa);
1541 return tap_fd;
1542}
1543
1544static int tap_open(char *ifname, int ifname_size)
1545{
1546 char dev[10]="";
1547 int fd;
1548 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1549 fprintf(stderr, "Cannot allocate TAP device\n");
1550 return -1;
1551 }
1552 pstrcpy(ifname, ifname_size, dev);
1553 fcntl(fd, F_SETFL, O_NONBLOCK);
1554 return fd;
1555}
b29fe3ed 1556#elif defined (_AIX)
1557static int tap_open(char *ifname, int ifname_size)
1558{
1559 fprintf (stderr, "no tap on AIX\n");
1560 return -1;
1561}
63a01ef8
AL		 1562#else
1563static int tap_open(char *ifname, int ifname_size)
1564{
1565 struct ifreq ifr;
1566 int fd, ret;
1567
1568 TFR(fd = open("/dev/net/tun", O_RDWR));
1569 if (fd < 0) {
1570 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1571 return -1;
1572 }
1573 memset(&ifr, 0, sizeof(ifr));
1574 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1575 if (ifname[0] != '\0')
1576 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1577 else
1578 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1579 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1580 if (ret != 0) {
1581 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1582 close(fd);
1583 return -1;
1584 }
1585 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1586 fcntl(fd, F_SETFL, O_NONBLOCK);
1587 return fd;
1588}
1589#endif
1590
1591static int launch_script(const char *setup_script, const char *ifname, int fd)
1592{
7c3370d4 1593 sigset_t oldmask, mask;
63a01ef8
AL		 1594 int pid, status;
1595 char *args[3];
1596 char **parg;
1597
7c3370d4
JK		 1598 sigemptyset(&mask);
1599 sigaddset(&mask, SIGCHLD);
1600 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1601
1602 /* try to launch network script */
1603 pid = fork();
1604 if (pid == 0) {
1605 int open_max = sysconf(_SC_OPEN_MAX), i;
1606
1607 for (i = 0; i < open_max; i++) {
1608 if (i != STDIN_FILENO &&
1609 i != STDOUT_FILENO &&
1610 i != STDERR_FILENO &&
1611 i != fd) {
1612 close(i);
63a01ef8
AL		 1613 }
1614 }
7c3370d4
JK		 1615 parg = args;
1616 *parg++ = (char *)setup_script;
1617 *parg++ = (char *)ifname;
1618 *parg++ = NULL;
1619 execv(setup_script, args);
1620 _exit(1);
1621 } else if (pid > 0) {
1622 while (waitpid(pid, &status, 0) != pid) {
1623 /* loop */
1624 }
1625 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1626
1627 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1628 return 0;
1629 }
1630 }
1631 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1632 return -1;
63a01ef8
AL		 1633}
1634
4a77b25e
MM		 1635static TAPState *net_tap_init(VLANState *vlan, const char *model,
1636 const char *name, const char *ifname1,
1637 const char *setup_script, const char *down_script)
63a01ef8
AL		 1638{
1639 TAPState *s;
1640 int fd;
1641 char ifname[128];
1642
1643 if (ifname1 != NULL)
1644 pstrcpy(ifname, sizeof(ifname), ifname1);
1645 else
1646 ifname[0] = '\0';
1647 TFR(fd = tap_open(ifname, sizeof(ifname)));
1648 if (fd < 0)
4a77b25e 1649 return NULL;
63a01ef8
AL		 1650
1651 if (!setup_script || !strcmp(setup_script, "no"))
1652 setup_script = "";
4a77b25e
MM		 1653 if (setup_script[0] != '\0' &&
1654 launch_script(setup_script, ifname, fd)) {
1655 return NULL;
63a01ef8 1656 }
7a9f6e4a 1657 s = net_tap_fd_init(vlan, model, name, fd);
63a01ef8 1658 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
7cb7434b
AL		 1659 "ifname=%s,script=%s,downscript=%s",
1660 ifname, setup_script, down_script);
973cbd37 1661 if (down_script && strcmp(down_script, "no")) {
63a01ef8 1662 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
973cbd37
AL		 1663 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1664 }
4a77b25e 1665 return s;
63a01ef8
AL		 1666}
1667
1668#endif /* !_WIN32 */
1669
1670#if defined(CONFIG_VDE)
1671typedef struct VDEState {
1672 VLANClientState *vc;
1673 VDECONN *vde;
1674} VDEState;
1675
1676static void vde_to_qemu(void *opaque)
1677{
1678 VDEState *s = opaque;
1679 uint8_t buf[4096];
1680 int size;
1681
cc63bb0f 1682 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
63a01ef8
AL		 1683 if (size > 0) {
1684 qemu_send_packet(s->vc, buf, size);
1685 }
1686}
1687
4f1c942b 1688static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1689{
e3f5ec2b 1690 VDEState *s = vc->opaque;
068daedd 1691 ssize_t ret;
4f1c942b
MM		 1692
1693 do {
1694 ret = vde_send(s->vde, (const char *)buf, size, 0);
1695 } while (ret < 0 && errno == EINTR);
1696
1697 return ret;
63a01ef8
AL		 1698}
1699
b946a153
AL		 1700static void vde_cleanup(VLANClientState *vc)
1701{
1702 VDEState *s = vc->opaque;
1703 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1704 vde_close(s->vde);
1705 qemu_free(s);
1706}
1707
7a9f6e4a
AL		 1708static int net_vde_init(VLANState *vlan, const char *model,
1709 const char *name, const char *sock,
bf38c1a0 1710 int port, const char *group, int mode)
63a01ef8
AL		 1711{
1712 VDEState *s;
1713 char *init_group = strlen(group) ? (char *)group : NULL;
1714 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1715
1716 struct vde_open_args args = {
1717 .port = port,
1718 .group = init_group,
1719 .mode = mode,
1720 };
1721
1722 s = qemu_mallocz(sizeof(VDEState));
cc63bb0f 1723 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
63a01ef8
AL		 1724 if (!s->vde){
1725 free(s);
1726 return -1;
1727 }
e3f5ec2b 1728 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
b946a153 1729 NULL, vde_cleanup, s);
63a01ef8 1730 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
7cb7434b 1731 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
63a01ef8
AL		 1732 sock, vde_datafd(s->vde));
1733 return 0;
1734}
1735#endif
1736
1737/* network connection */
1738typedef struct NetSocketState {
1739 VLANClientState *vc;
1740 int fd;
1741 int state; /* 0 = getting length, 1 = getting data */
abcd2baa
AL		 1742 unsigned int index;
1743 unsigned int packet_len;
63a01ef8
AL		 1744 uint8_t buf[4096];
1745 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1746} NetSocketState;
1747
1748typedef struct NetSocketListenState {
1749 VLANState *vlan;
bf38c1a0 1750 char *model;
7a9f6e4a 1751 char *name;
63a01ef8
AL		 1752 int fd;
1753} NetSocketListenState;
1754
1755/* XXX: we consider we can send the whole packet without blocking */
4f1c942b 1756static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1757{
e3f5ec2b 1758 NetSocketState *s = vc->opaque;
63a01ef8
AL		 1759 uint32_t len;
1760 len = htonl(size);
1761
1762 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
4f1c942b 1763 return send_all(s->fd, buf, size);
63a01ef8
AL		 1764}
1765
4f1c942b 1766static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1767{
e3f5ec2b 1768 NetSocketState *s = vc->opaque;
4f1c942b 1769
70503264 1770 return sendto(s->fd, (const void *)buf, size, 0,
4f1c942b 1771 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
63a01ef8
AL		 1772}
1773
1774static void net_socket_send(void *opaque)
1775{
1776 NetSocketState *s = opaque;
abcd2baa
AL		 1777 int size, err;
1778 unsigned l;
63a01ef8
AL		 1779 uint8_t buf1[4096];
1780 const uint8_t *buf;
1781
c5b76b38 1782 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
63a01ef8
AL		 1783 if (size < 0) {
1784 err = socket_error();
1785 if (err != EWOULDBLOCK)
1786 goto eoc;
1787 } else if (size == 0) {
1788 /* end of connection */
1789 eoc:
1790 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1791 closesocket(s->fd);
1792 return;
1793 }
1794 buf = buf1;
1795 while (size > 0) {
1796 /* reassemble a packet from the network */
1797 switch(s->state) {
1798 case 0:
1799 l = 4 - s->index;
1800 if (l > size)
1801 l = size;
1802 memcpy(s->buf + s->index, buf, l);
1803 buf += l;
1804 size -= l;
1805 s->index += l;
1806 if (s->index == 4) {
1807 /* got length */
1808 s->packet_len = ntohl(*(uint32_t *)s->buf);
1809 s->index = 0;
1810 s->state = 1;
1811 }
1812 break;
1813 case 1:
1814 l = s->packet_len - s->index;
1815 if (l > size)
1816 l = size;
abcd2baa
AL		 1817 if (s->index + l <= sizeof(s->buf)) {
1818 memcpy(s->buf + s->index, buf, l);
1819 } else {
1820 fprintf(stderr, "serious error: oversized packet received,"
1821 "connection terminated.\n");
1822 s->state = 0;
1823 goto eoc;
1824 }
1825
63a01ef8
AL		 1826 s->index += l;
1827 buf += l;
1828 size -= l;
1829 if (s->index >= s->packet_len) {
1830 qemu_send_packet(s->vc, s->buf, s->packet_len);
1831 s->index = 0;
1832 s->state = 0;
1833 }
1834 break;
1835 }
1836 }
1837}
1838
1839static void net_socket_send_dgram(void *opaque)
1840{
1841 NetSocketState *s = opaque;
1842 int size;
1843
c5b76b38 1844 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
63a01ef8
AL		 1845 if (size < 0)
1846 return;
1847 if (size == 0) {
1848 /* end of connection */
1849 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1850 return;
1851 }
1852 qemu_send_packet(s->vc, s->buf, size);
1853}
1854
1855static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1856{
1857 struct ip_mreq imr;
1858 int fd;
1859 int val, ret;
1860 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1861 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1862 inet_ntoa(mcastaddr->sin_addr),
1863 (int)ntohl(mcastaddr->sin_addr.s_addr));
1864 return -1;
1865
1866 }
1867 fd = socket(PF_INET, SOCK_DGRAM, 0);
1868 if (fd < 0) {
1869 perror("socket(PF_INET, SOCK_DGRAM)");
1870 return -1;
1871 }
1872
1873 val = 1;
1874 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1875 (const char *)&val, sizeof(val));
1876 if (ret < 0) {
1877 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1878 goto fail;
1879 }
1880
1881 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1882 if (ret < 0) {
1883 perror("bind");
1884 goto fail;
1885 }
1886
1887 /* Add host to multicast group */
1888 imr.imr_multiaddr = mcastaddr->sin_addr;
1889 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1890
1891 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1892 (const char *)&imr, sizeof(struct ip_mreq));
1893 if (ret < 0) {
1894 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1895 goto fail;
1896 }
1897
1898 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1899 val = 1;
1900 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1901 (const char *)&val, sizeof(val));
1902 if (ret < 0) {
1903 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1904 goto fail;
1905 }
1906
1907 socket_set_nonblock(fd);
1908 return fd;
1909fail:
1910 if (fd >= 0)
1911 closesocket(fd);
1912 return -1;
1913}
1914
b946a153
AL		 1915static void net_socket_cleanup(VLANClientState *vc)
1916{
1917 NetSocketState *s = vc->opaque;
1918 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1919 close(s->fd);
1920 qemu_free(s);
1921}
1922
7a9f6e4a
AL		 1923static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1924 const char *model,
1925 const char *name,
bf38c1a0 1926 int fd, int is_connected)
63a01ef8
AL		 1927{
1928 struct sockaddr_in saddr;
1929 int newfd;
1930 socklen_t saddr_len;
1931 NetSocketState *s;
1932
1933 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1934 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1935 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1936 */
1937
1938 if (is_connected) {
1939 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1940 /* must be bound */
1941 if (saddr.sin_addr.s_addr==0) {
1942 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1943 fd);
1944 return NULL;
1945 }
1946 /* clone dgram socket */
1947 newfd = net_socket_mcast_create(&saddr);
1948 if (newfd < 0) {
1949 /* error already reported by net_socket_mcast_create() */
1950 close(fd);
1951 return NULL;
1952 }
1953 /* clone newfd to fd, close newfd */
1954 dup2(newfd, fd);
1955 close(newfd);
1956
1957 } else {
1958 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1959 fd, strerror(errno));
1960 return NULL;
1961 }
1962 }
1963
1964 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8
AL		 1965 s->fd = fd;
1966
463af534 1967 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
b946a153 1968 NULL, net_socket_cleanup, s);
63a01ef8
AL		 1969 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1970
1971 /* mcast: save bound address as dst */
1972 if (is_connected) s->dgram_dst=saddr;
1973
1974 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1975 "socket: fd=%d (%s mcast=%s:%d)",
1976 fd, is_connected? "cloned" : "",
1977 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1978 return s;
1979}
1980
1981static void net_socket_connect(void *opaque)
1982{
1983 NetSocketState *s = opaque;
1984 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1985}
1986
7a9f6e4a
AL		 1987static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
1988 const char *model,
1989 const char *name,
bf38c1a0 1990 int fd, int is_connected)
63a01ef8
AL		 1991{
1992 NetSocketState *s;
1993 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8 1994 s->fd = fd;
463af534 1995 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
b946a153 1996 NULL, net_socket_cleanup, s);
63a01ef8
AL		 1997 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1998 "socket: fd=%d", fd);
1999 if (is_connected) {
2000 net_socket_connect(s);
2001 } else {
2002 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2003 }
2004 return s;
2005}
2006
7a9f6e4a
AL		 2007static NetSocketState *net_socket_fd_init(VLANState *vlan,
2008 const char *model, const char *name,
bf38c1a0 2009 int fd, int is_connected)
63a01ef8
AL		 2010{
2011 int so_type=-1, optlen=sizeof(so_type);
2012
2013 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2014 (socklen_t *)&optlen)< 0) {
2015 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2016 return NULL;
2017 }
2018 switch(so_type) {
2019 case SOCK_DGRAM:
7a9f6e4a 2020 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
63a01ef8 2021 case SOCK_STREAM:
7a9f6e4a 2022 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2023 default:
2024 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2025 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
7a9f6e4a 2026 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2027 }
2028 return NULL;
2029}
2030
2031static void net_socket_accept(void *opaque)
2032{
2033 NetSocketListenState *s = opaque;
2034 NetSocketState *s1;
2035 struct sockaddr_in saddr;
2036 socklen_t len;
2037 int fd;
2038
2039 for(;;) {
2040 len = sizeof(saddr);
2041 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2042 if (fd < 0 && errno != EINTR) {
2043 return;
2044 } else if (fd >= 0) {
2045 break;
2046 }
2047 }
7a9f6e4a 2048 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
63a01ef8
AL		 2049 if (!s1) {
2050 closesocket(fd);
2051 } else {
2052 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2053 "socket: connection from %s:%d",
2054 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2055 }
2056}
2057
7a9f6e4a
AL		 2058static int net_socket_listen_init(VLANState *vlan,
2059 const char *model,
2060 const char *name,
bf38c1a0 2061 const char *host_str)
63a01ef8
AL		 2062{
2063 NetSocketListenState *s;
2064 int fd, val, ret;
2065 struct sockaddr_in saddr;
2066
2067 if (parse_host_port(&saddr, host_str) < 0)
2068 return -1;
2069
2070 s = qemu_mallocz(sizeof(NetSocketListenState));
63a01ef8
AL		 2071
2072 fd = socket(PF_INET, SOCK_STREAM, 0);
2073 if (fd < 0) {
2074 perror("socket");
2075 return -1;
2076 }
2077 socket_set_nonblock(fd);
2078
2079 /* allow fast reuse */
2080 val = 1;
2081 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2082
2083 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2084 if (ret < 0) {
2085 perror("bind");
2086 return -1;
2087 }
2088 ret = listen(fd, 0);
2089 if (ret < 0) {
2090 perror("listen");
2091 return -1;
2092 }
2093 s->vlan = vlan;
bf38c1a0 2094 s->model = strdup(model);
ea053add 2095 s->name = name ? strdup(name) : NULL;
63a01ef8
AL		 2096 s->fd = fd;
2097 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2098 return 0;
2099}
2100
7a9f6e4a
AL		 2101static int net_socket_connect_init(VLANState *vlan,
2102 const char *model,
2103 const char *name,
bf38c1a0 2104 const char *host_str)
63a01ef8
AL		 2105{
2106 NetSocketState *s;
2107 int fd, connected, ret, err;
2108 struct sockaddr_in saddr;
2109
2110 if (parse_host_port(&saddr, host_str) < 0)
2111 return -1;
2112
2113 fd = socket(PF_INET, SOCK_STREAM, 0);
2114 if (fd < 0) {
2115 perror("socket");
2116 return -1;
2117 }
2118 socket_set_nonblock(fd);
2119
2120 connected = 0;
2121 for(;;) {
2122 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2123 if (ret < 0) {
2124 err = socket_error();
2125 if (err == EINTR || err == EWOULDBLOCK) {
2126 } else if (err == EINPROGRESS) {
2127 break;
2128#ifdef _WIN32
2129 } else if (err == WSAEALREADY) {
2130 break;
2131#endif
2132 } else {
2133 perror("connect");
2134 closesocket(fd);
2135 return -1;
2136 }
2137 } else {
2138 connected = 1;
2139 break;
2140 }
2141 }
7a9f6e4a 2142 s = net_socket_fd_init(vlan, model, name, fd, connected);
63a01ef8
AL		 2143 if (!s)
2144 return -1;
2145 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2146 "socket: connect to %s:%d",
2147 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2148 return 0;
2149}
2150
7a9f6e4a
AL		 2151static int net_socket_mcast_init(VLANState *vlan,
2152 const char *model,
2153 const char *name,
bf38c1a0 2154 const char *host_str)
63a01ef8
AL		 2155{
2156 NetSocketState *s;
2157 int fd;
2158 struct sockaddr_in saddr;
2159
2160 if (parse_host_port(&saddr, host_str) < 0)
2161 return -1;
2162
2163
2164 fd = net_socket_mcast_create(&saddr);
2165 if (fd < 0)
2166 return -1;
2167
7a9f6e4a 2168 s = net_socket_fd_init(vlan, model, name, fd, 0);
63a01ef8
AL		 2169 if (!s)
2170 return -1;
2171
2172 s->dgram_dst = saddr;
2173
2174 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2175 "socket: mcast=%s:%d",
2176 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2177 return 0;
2178
2179}
2180
bb9ea79e
AL		 2181typedef struct DumpState {
2182 VLANClientState *pcap_vc;
2183 int fd;
2184 int pcap_caplen;
2185} DumpState;
2186
2187#define PCAP_MAGIC 0xa1b2c3d4
2188
2189struct pcap_file_hdr {
2190 uint32_t magic;
2191 uint16_t version_major;
2192 uint16_t version_minor;
2193 int32_t thiszone;
2194 uint32_t sigfigs;
2195 uint32_t snaplen;
2196 uint32_t linktype;
2197};
2198
2199struct pcap_sf_pkthdr {
2200 struct {
2201 int32_t tv_sec;
2202 int32_t tv_usec;
2203 } ts;
2204 uint32_t caplen;
2205 uint32_t len;
2206};
2207
4f1c942b 2208static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
bb9ea79e 2209{
e3f5ec2b 2210 DumpState *s = vc->opaque;
bb9ea79e
AL		 2211 struct pcap_sf_pkthdr hdr;
2212 int64_t ts;
2213 int caplen;
2214
2215 /* Early return in case of previous error. */
2216 if (s->fd < 0) {
4f1c942b 2217 return size;
bb9ea79e
AL		 2218 }
2219
37cb6fc3 2220 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
bb9ea79e
AL		 2221 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2222
37cb6fc3 2223 hdr.ts.tv_sec = ts / 1000000;
bb9ea79e
AL		 2224 hdr.ts.tv_usec = ts % 1000000;
2225 hdr.caplen = caplen;
2226 hdr.len = size;
2227 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2228 write(s->fd, buf, caplen) != caplen) {
2229 qemu_log("-net dump write error - stop dump\n");
2230 close(s->fd);
2231 s->fd = -1;
2232 }
4f1c942b
MM		 2233
2234 return size;
bb9ea79e
AL		 2235}
2236
2237static void net_dump_cleanup(VLANClientState *vc)
2238{
2239 DumpState *s = vc->opaque;
2240
2241 close(s->fd);
2242 qemu_free(s);
2243}
2244
10ae5a7a 2245static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
bb9ea79e
AL		 2246 const char *name, const char *filename, int len)
2247{
2248 struct pcap_file_hdr hdr;
2249 DumpState *s;
2250
2251 s = qemu_malloc(sizeof(DumpState));
2252
024431b3 2253 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
bb9ea79e 2254 if (s->fd < 0) {
10ae5a7a 2255 config_error(mon, "-net dump: can't open %s\n", filename);
bb9ea79e
AL		 2256 return -1;
2257 }
2258
2259 s->pcap_caplen = len;
2260
2261 hdr.magic = PCAP_MAGIC;
2262 hdr.version_major = 2;
2263 hdr.version_minor = 4;
2264 hdr.thiszone = 0;
2265 hdr.sigfigs = 0;
2266 hdr.snaplen = s->pcap_caplen;
2267 hdr.linktype = 1;
2268
2269 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
10ae5a7a 2270 config_error(mon, "-net dump write error: %s\n", strerror(errno));
bb9ea79e
AL		 2271 close(s->fd);
2272 qemu_free(s);
2273 return -1;
2274 }
2275
463af534 2276 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
bb9ea79e
AL		 2277 net_dump_cleanup, s);
2278 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2279 "dump to %s (len=%d)", filename, len);
2280 return 0;
2281}
2282
63a01ef8 2283/* find or alloc a new VLAN */
1a609520 2284VLANState *qemu_find_vlan(int id, int allocate)
63a01ef8
AL		 2285{
2286 VLANState **pvlan, *vlan;
2287 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2288 if (vlan->id == id)
2289 return vlan;
2290 }
1a609520
JK		 2291 if (!allocate) {
2292 return NULL;
2293 }
63a01ef8 2294 vlan = qemu_mallocz(sizeof(VLANState));
63a01ef8
AL		 2295 vlan->id = id;
2296 vlan->next = NULL;
2297 pvlan = &first_vlan;
2298 while (*pvlan != NULL)
2299 pvlan = &(*pvlan)->next;
2300 *pvlan = vlan;
2301 return vlan;
2302}
2303
7697079b
AL		 2304static int nic_get_free_idx(void)
2305{
2306 int index;
2307
2308 for (index = 0; index < MAX_NICS; index++)
2309 if (!nd_table[index].used)
2310 return index;
2311 return -1;
2312}
2313
d07f22c5
AL		 2314void qemu_check_nic_model(NICInfo *nd, const char *model)
2315{
2316 const char *models[2];
2317
2318 models[0] = model;
2319 models[1] = NULL;
2320
2321 qemu_check_nic_model_list(nd, models, model);
2322}
2323
2324void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2325 const char *default_model)
2326{
2327 int i, exit_status = 0;
2328
2329 if (!nd->model)
2330 nd->model = strdup(default_model);
2331
2332 if (strcmp(nd->model, "?") != 0) {
2333 for (i = 0 ; models[i]; i++)
2334 if (strcmp(nd->model, models[i]) == 0)
2335 return;
2336
2337 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2338 exit_status = 1;
2339 }
2340
2341 fprintf(stderr, "qemu: Supported NIC models: ");
2342 for (i = 0 ; models[i]; i++)
2343 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2344
2345 exit(exit_status);
2346}
2347
10ae5a7a 2348int net_client_init(Monitor *mon, const char *device, const char *p)
63a01ef8
AL		 2349{
2350 char buf[1024];
2351 int vlan_id, ret;
2352 VLANState *vlan;
7a9f6e4a 2353 char *name = NULL;
63a01ef8
AL		 2354
2355 vlan_id = 0;
2356 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2357 vlan_id = strtol(buf, NULL, 0);
2358 }
1a609520 2359 vlan = qemu_find_vlan(vlan_id, 1);
9036de1a 2360
7a9f6e4a 2361 if (get_param_value(buf, sizeof(buf), "name", p)) {
10ae5a7a 2362 name = qemu_strdup(buf);
7a9f6e4a 2363 }
63a01ef8 2364 if (!strcmp(device, "nic")) {
8e4416af 2365 static const char * const nic_params[] = {
ffe6370c 2366 "vlan", "name", "macaddr", "model", "addr", "vectors", NULL
8e4416af 2367 };
63a01ef8
AL		 2368 NICInfo *nd;
2369 uint8_t *macaddr;
7697079b 2370 int idx = nic_get_free_idx();
63a01ef8 2371
0aa7a205 2372 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
10ae5a7a
JK		 2373 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2374 ret = -1;
2375 goto out;
8e4416af 2376 }
7697079b 2377 if (idx == -1 || nb_nics >= MAX_NICS) {
10ae5a7a 2378 config_error(mon, "Too Many NICs\n");
771f1339
AL		 2379 ret = -1;
2380 goto out;
63a01ef8 2381 }
7697079b 2382 nd = &nd_table[idx];
63a01ef8
AL		 2383 macaddr = nd->macaddr;
2384 macaddr[0] = 0x52;
2385 macaddr[1] = 0x54;
2386 macaddr[2] = 0x00;
2387 macaddr[3] = 0x12;
2388 macaddr[4] = 0x34;
7697079b 2389 macaddr[5] = 0x56 + idx;
63a01ef8
AL		 2390
2391 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2392 if (parse_macaddr(macaddr, buf) < 0) {
10ae5a7a 2393 config_error(mon, "invalid syntax for ethernet address\n");
771f1339
AL		 2394 ret = -1;
2395 goto out;
63a01ef8
AL		 2396 }
2397 }
2398 if (get_param_value(buf, sizeof(buf), "model", p)) {
2399 nd->model = strdup(buf);
2400 }
5607c388
MA		 2401 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2402 nd->devaddr = strdup(buf);
2403 }
ffe6370c
MT		 2404 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2405 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2406 char *endptr;
2407 long vectors = strtol(buf, &endptr, 0);
2408 if (*endptr) {
2409 config_error(mon, "invalid syntax for # of vectors\n");
2410 ret = -1;
2411 goto out;
2412 }
2413 if (vectors < 0 || vectors > 0x7ffffff) {
2414 config_error(mon, "invalid # of vectors\n");
2415 ret = -1;
2416 goto out;
2417 }
2418 nd->nvectors = vectors;
2419 }
63a01ef8 2420 nd->vlan = vlan;
7a9f6e4a 2421 nd->name = name;
7697079b 2422 nd->used = 1;
7a9f6e4a 2423 name = NULL;
63a01ef8
AL		 2424 nb_nics++;
2425 vlan->nb_guest_devs++;
4d73cd3b 2426 ret = idx;
63a01ef8
AL		 2427 } else
2428 if (!strcmp(device, "none")) {
8e4416af 2429 if (*p != '\0') {
10ae5a7a
JK		 2430 config_error(mon, "'none' takes no parameters\n");
2431 ret = -1;
2432 goto out;
8e4416af 2433 }
63a01ef8
AL		 2434 /* does nothing. It is needed to signal that no network cards
2435 are wanted */
2436 ret = 0;
2437 } else
2438#ifdef CONFIG_SLIRP
2439 if (!strcmp(device, "user")) {
8e4416af 2440 static const char * const slirp_params[] = {
c92ef6a2
JK		 2441 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2442 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2443 "hostfwd", "guestfwd", NULL
8e4416af 2444 };
ad196a9d 2445 struct slirp_config_str *config;
c92ef6a2
JK		 2446 int restricted = 0;
2447 char *vnet = NULL;
2448 char *vhost = NULL;
2449 char *vhostname = NULL;
ad196a9d
JK		 2450 char *tftp_export = NULL;
2451 char *bootfile = NULL;
c92ef6a2
JK		 2452 char *vdhcp_start = NULL;
2453 char *vnamesrv = NULL;
ad196a9d 2454 char *smb_export = NULL;
c92ef6a2 2455 char *vsmbsrv = NULL;
ad196a9d 2456 const char *q;
b8e8af38 2457
0aa7a205 2458 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
10ae5a7a
JK		 2459 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2460 ret = -1;
2461 goto out;
8e4416af 2462 }
c92ef6a2
JK		 2463 if (get_param_value(buf, sizeof(buf), "ip", p)) {
2464 /* emulate legacy parameter */
2465 vnet = qemu_malloc(strlen(buf) + strlen("/24") + 1);
2466 strcpy(vnet, buf);
2467 strcat(vnet, "/24");
2468 }
2469 if (get_param_value(buf, sizeof(buf), "net", p)) {
2470 vnet = qemu_strdup(buf);
2471 }
2472 if (get_param_value(buf, sizeof(buf), "host", p)) {
2473 vhost = qemu_strdup(buf);
2474 }
63a01ef8 2475 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
c92ef6a2 2476 vhostname = qemu_strdup(buf);
63a01ef8 2477 }
49ec9b40 2478 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
b8e8af38 2479 restricted = (buf[0] == 'y') ? 1 : 0;
49ec9b40 2480 }
c92ef6a2
JK		 2481 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2482 vdhcp_start = qemu_strdup(buf);
2483 }
2484 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2485 vnamesrv = qemu_strdup(buf);
49ec9b40 2486 }
ad196a9d
JK		 2487 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2488 tftp_export = qemu_strdup(buf);
2489 }
2490 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2491 bootfile = qemu_strdup(buf);
2492 }
2493 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2494 smb_export = qemu_strdup(buf);
c92ef6a2
JK		 2495 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2496 vsmbsrv = qemu_strdup(buf);
2497 }
ad196a9d
JK		 2498 }
2499 q = p;
2500 while (1) {
2501 config = qemu_malloc(sizeof(*config));
2502 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2503 "hostfwd", &q)) {
ad196a9d
JK		 2504 break;
2505 }
c92ef6a2 2506 config->flags = SLIRP_CFG_HOSTFWD;
ad196a9d
JK		 2507 config->next = slirp_configs;
2508 slirp_configs = config;
2509 config = NULL;
2510 }
2511 q = p;
2512 while (1) {
2513 config = qemu_malloc(sizeof(*config));
2514 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2515 "guestfwd", &q)) {
ad196a9d
JK		 2516 break;
2517 }
2518 config->flags = 0;
2519 config->next = slirp_configs;
2520 slirp_configs = config;
2521 config = NULL;
2522 }
2523 qemu_free(config);
63a01ef8 2524 vlan->nb_host_devs++;
c92ef6a2
JK		 2525 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2526 vhostname, tftp_export, bootfile, vdhcp_start,
2527 vnamesrv, smb_export, vsmbsrv);
2528 qemu_free(vnet);
2529 qemu_free(vhost);
2530 qemu_free(vhostname);
ad196a9d
JK		 2531 qemu_free(tftp_export);
2532 qemu_free(bootfile);
c92ef6a2
JK		 2533 qemu_free(vdhcp_start);
2534 qemu_free(vnamesrv);
ad196a9d 2535 qemu_free(smb_export);
c92ef6a2 2536 qemu_free(vsmbsrv);
8ca9217d 2537 } else if (!strcmp(device, "channel")) {
b1c99fcd 2538 if (TAILQ_EMPTY(&slirp_stacks)) {
ad196a9d
JK		 2539 struct slirp_config_str *config;
2540
2541 config = qemu_malloc(sizeof(*config));
2542 pstrcpy(config->str, sizeof(config->str), p);
c92ef6a2 2543 config->flags = SLIRP_CFG_LEGACY;
ad196a9d
JK		 2544 config->next = slirp_configs;
2545 slirp_configs = config;
2546 } else {
b1c99fcd 2547 slirp_guestfwd(TAILQ_FIRST(&slirp_stacks), mon, p, 1);
8ca9217d 2548 }
8ca9217d 2549 ret = 0;
63a01ef8
AL		 2550 } else
2551#endif
2552#ifdef _WIN32
2553 if (!strcmp(device, "tap")) {
8e4416af
AL		 2554 static const char * const tap_params[] = {
2555 "vlan", "name", "ifname", NULL
2556 };
63a01ef8 2557 char ifname[64];
8e4416af 2558
0aa7a205 2559 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
10ae5a7a
JK		 2560 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2561 ret = -1;
2562 goto out;
8e4416af 2563 }
63a01ef8 2564 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
10ae5a7a 2565 config_error(mon, "tap: no interface name\n");
771f1339
AL		 2566 ret = -1;
2567 goto out;
63a01ef8
AL		 2568 }
2569 vlan->nb_host_devs++;
7a9f6e4a 2570 ret = tap_win32_init(vlan, device, name, ifname);
63a01ef8 2571 } else
b29fe3ed 2572#elif defined (_AIX)
63a01ef8
AL		 2573#else
2574 if (!strcmp(device, "tap")) {
0aa7a205 2575 char ifname[64], chkbuf[64];
63a01ef8 2576 char setup_script[1024], down_script[1024];
4a77b25e 2577 TAPState *s;
63a01ef8
AL		 2578 int fd;
2579 vlan->nb_host_devs++;
2580 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2581 static const char * const fd_params[] = {
2582 "vlan", "name", "fd", "sndbuf", NULL
2583 };
0aa7a205 2584 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a
JK		 2585 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2586 ret = -1;
2587 goto out;
8e4416af 2588 }
63a01ef8
AL		 2589 fd = strtol(buf, NULL, 0);
2590 fcntl(fd, F_SETFL, O_NONBLOCK);
4a77b25e 2591 s = net_tap_fd_init(vlan, device, name, fd);
63a01ef8 2592 } else {
8e4416af 2593 static const char * const tap_params[] = {
0df0ff6d 2594 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
8e4416af 2595 };
0aa7a205 2596 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
10ae5a7a
JK		 2597 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2598 ret = -1;
2599 goto out;
8e4416af 2600 }
63a01ef8
AL		 2601 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2602 ifname[0] = '\0';
2603 }
2604 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2605 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2606 }
2607 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2608 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2609 }
4a77b25e
MM		 2610 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2611 }
2612 if (s != NULL) {
0df0ff6d
MM		 2613 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
2614 tap_set_sndbuf(s, atoi(buf), mon);
2615 }
4a77b25e
MM		 2616 ret = 0;
2617 } else {
2618 ret = -1;
63a01ef8
AL		 2619 }
2620 } else
2621#endif
2622 if (!strcmp(device, "socket")) {
0aa7a205 2623 char chkbuf[64];
63a01ef8 2624 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2625 static const char * const fd_params[] = {
2626 "vlan", "name", "fd", NULL
2627 };
63a01ef8 2628 int fd;
0aa7a205 2629 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a
JK		 2630 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2631 ret = -1;
2632 goto out;
8e4416af 2633 }
63a01ef8
AL		 2634 fd = strtol(buf, NULL, 0);
2635 ret = -1;
7a9f6e4a 2636 if (net_socket_fd_init(vlan, device, name, fd, 1))
63a01ef8
AL		 2637 ret = 0;
2638 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
8e4416af
AL		 2639 static const char * const listen_params[] = {
2640 "vlan", "name", "listen", NULL
2641 };
0aa7a205 2642 if (check_params(chkbuf, sizeof(chkbuf), listen_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_listen_init(vlan, device, name, buf);
63a01ef8 2648 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
8e4416af
AL		 2649 static const char * const connect_params[] = {
2650 "vlan", "name", "connect", NULL
2651 };
0aa7a205 2652 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
10ae5a7a
JK		 2653 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2654 ret = -1;
2655 goto out;
8e4416af 2656 }
7a9f6e4a 2657 ret = net_socket_connect_init(vlan, device, name, buf);
63a01ef8 2658 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
8e4416af
AL		 2659 static const char * const mcast_params[] = {
2660 "vlan", "name", "mcast", NULL
2661 };
0aa7a205 2662 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
10ae5a7a
JK		 2663 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2664 ret = -1;
2665 goto out;
8e4416af 2666 }
7a9f6e4a 2667 ret = net_socket_mcast_init(vlan, device, name, buf);
63a01ef8 2668 } else {
10ae5a7a 2669 config_error(mon, "Unknown socket options: %s\n", p);
771f1339
AL		 2670 ret = -1;
2671 goto out;
63a01ef8
AL		 2672 }
2673 vlan->nb_host_devs++;
2674 } else
2675#ifdef CONFIG_VDE
2676 if (!strcmp(device, "vde")) {
8e4416af
AL		 2677 static const char * const vde_params[] = {
2678 "vlan", "name", "sock", "port", "group", "mode", NULL
2679 };
63a01ef8
AL		 2680 char vde_sock[1024], vde_group[512];
2681 int vde_port, vde_mode;
8e4416af 2682
0aa7a205 2683 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
10ae5a7a
JK		 2684 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2685 ret = -1;
2686 goto out;
8e4416af 2687 }
63a01ef8
AL		 2688 vlan->nb_host_devs++;
2689 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2690 vde_sock[0] = '\0';
2691 }
2692 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2693 vde_port = strtol(buf, NULL, 10);
2694 } else {
2695 vde_port = 0;
2696 }
2697 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2698 vde_group[0] = '\0';
2699 }
2700 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2701 vde_mode = strtol(buf, NULL, 8);
2702 } else {
2703 vde_mode = 0700;
2704 }
7a9f6e4a 2705 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
63a01ef8
AL		 2706 } else
2707#endif
bb9ea79e
AL		 2708 if (!strcmp(device, "dump")) {
2709 int len = 65536;
2710
2711 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2712 len = strtol(buf, NULL, 0);
2713 }
2714 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2715 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2716 }
10ae5a7a 2717 ret = net_dump_init(mon, vlan, device, name, buf, len);
bb9ea79e 2718 } else {
10ae5a7a 2719 config_error(mon, "Unknown network device: %s\n", device);
771f1339
AL		 2720 ret = -1;
2721 goto out;
63a01ef8
AL		 2722 }
2723 if (ret < 0) {
10ae5a7a 2724 config_error(mon, "Could not initialize device '%s'\n", device);
63a01ef8 2725 }
771f1339 2726out:
10ae5a7a 2727 qemu_free(name);
63a01ef8
AL		 2728 return ret;
2729}
2730
8b13c4a7
AL		 2731void net_client_uninit(NICInfo *nd)
2732{
2733 nd->vlan->nb_guest_devs--;
2734 nb_nics--;
2735 nd->used = 0;
2736 free((void *)nd->model);
2737}
2738
6f338c34
AL		 2739static int net_host_check_device(const char *device)
2740{
2741 int i;
bb9ea79e 2742 const char *valid_param_list[] = { "tap", "socket", "dump"
6f338c34
AL		 2743#ifdef CONFIG_SLIRP
2744 ,"user"
2745#endif
2746#ifdef CONFIG_VDE
2747 ,"vde"
2748#endif
2749 };
2750 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2751 if (!strncmp(valid_param_list[i], device,
2752 strlen(valid_param_list[i])))
2753 return 1;
2754 }
2755
2756 return 0;
2757}
2758
376253ec 2759void net_host_device_add(Monitor *mon, const char *device, const char *opts)
6f338c34
AL		 2760{
2761 if (!net_host_check_device(device)) {
376253ec 2762 monitor_printf(mon, "invalid host network device %s\n", device);
6f338c34
AL		 2763 return;
2764 }
10ae5a7a 2765 if (net_client_init(mon, device, opts ? opts : "") < 0) {
5c8be678
AL		 2766 monitor_printf(mon, "adding host network device %s failed\n", device);
2767 }
6f338c34
AL		 2768}
2769
376253ec 2770void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
6f338c34 2771{
6f338c34
AL		 2772 VLANClientState *vc;
2773
1a609520 2774 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
6f338c34 2775 if (!vc) {
6f338c34
AL		 2776 return;
2777 }
e8f1f9db
AL		 2778 if (!net_host_check_device(vc->model)) {
2779 monitor_printf(mon, "invalid host network device %s\n", device);
2780 return;
2781 }
6f338c34
AL		 2782 qemu_del_vlan_client(vc);
2783}
2784
63a01ef8
AL		 2785int net_client_parse(const char *str)
2786{
2787 const char *p;
2788 char *q;
2789 char device[64];
2790
2791 p = str;
2792 q = device;
2793 while (*p != '\0' && *p != ',') {
2794 if ((q - device) < sizeof(device) - 1)
2795 *q++ = *p;
2796 p++;
2797 }
2798 *q = '\0';
2799 if (*p == ',')
2800 p++;
2801
10ae5a7a 2802 return net_client_init(NULL, device, p);
63a01ef8
AL		 2803}
2804
406c8df3
GC		 2805void net_set_boot_mask(int net_boot_mask)
2806{
2807 int i;
2808
2809 /* Only the first four NICs may be bootable */
2810 net_boot_mask = net_boot_mask & 0xF;
2811
2812 for (i = 0; i < nb_nics; i++) {
2813 if (net_boot_mask & (1 << i)) {
2814 nd_table[i].bootable = 1;
2815 net_boot_mask &= ~(1 << i);
2816 }
2817 }
2818
2819 if (net_boot_mask) {
2820 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2821 exit(1);
2822 }
2823}
2824
376253ec 2825void do_info_network(Monitor *mon)
63a01ef8
AL		 2826{
2827 VLANState *vlan;
2828 VLANClientState *vc;
2829
2830 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
376253ec 2831 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
63a01ef8 2832 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
376253ec 2833 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
63a01ef8
AL		 2834 }
2835}
2836
376253ec 2837int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
436e5e53
AL		 2838{
2839 VLANState *vlan;
2840 VLANClientState *vc = NULL;
2841
2842 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2843 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2844 if (strcmp(vc->name, name) == 0)
dd5de373
EI		 2845 goto done;
2846done:
436e5e53
AL		 2847
2848 if (!vc) {
376253ec 2849 monitor_printf(mon, "could not find network device '%s'", name);
436e5e53
AL		 2850 return 0;
2851 }
2852
2853 if (strcmp(up_or_down, "up") == 0)
2854 vc->link_down = 0;
2855 else if (strcmp(up_or_down, "down") == 0)
2856 vc->link_down = 1;
2857 else
376253ec
AL		 2858 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2859 "valid\n", up_or_down);
436e5e53 2860
34b25ca7
AL		 2861 if (vc->link_status_changed)
2862 vc->link_status_changed(vc);
2863
436e5e53
AL		 2864 return 1;
2865}
2866
63a01ef8
AL		 2867void net_cleanup(void)
2868{
2869 VLANState *vlan;
2870
63a01ef8
AL		 2871 /* close network clients */
2872 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
b946a153 2873 VLANClientState *vc = vlan->first_client;
63a01ef8 2874
b946a153
AL		 2875 while (vc) {
2876 VLANClientState *next = vc->next;
63a01ef8 2877
b946a153
AL		 2878 qemu_del_vlan_client(vc);
2879
2880 vc = next;
63a01ef8
AL		 2881 }
2882 }
63a01ef8
AL		 2883}
2884
2885void net_client_check(void)
2886{
2887 VLANState *vlan;
2888
2889 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2890 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2891 continue;
2892 if (vlan->nb_guest_devs == 0)
2893 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2894 if (vlan->nb_host_devs == 0)
2895 fprintf(stderr,
2896 "Warning: vlan %d is not connected to host network\n",
2897 vlan->id);
2898 }
2899}
Qemu copy for testing