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Add support for fd=name to tap and socket networking
[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 784 /* default settings according to historic slirp */
8389e7f4
AL		 785 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
786 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
ad0d8c4c
JK		 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);
fc57bc57
JK		 906 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
907 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
63a01ef8
AL		 908 return 0;
909}
910
f13b572c
JK		 911static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
912 const char *stack)
913{
914 VLANClientState *vc;
915
916 if (vlan) {
917 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
918 if (!vc) {
919 return NULL;
920 }
921 if (strcmp(vc->model, "user")) {
922 monitor_printf(mon, "invalid device specified\n");
923 return NULL;
924 }
925 return vc->opaque;
926 } else {
927 if (TAILQ_EMPTY(&slirp_stacks)) {
928 monitor_printf(mon, "user mode network stack not in use\n");
929 return NULL;
930 }
931 return TAILQ_FIRST(&slirp_stacks);
932 }
933}
934
935void net_slirp_hostfwd_remove(Monitor *mon, const char *arg1,
936 const char *arg2, const char *arg3)
c1261d8d 937{
3c6a0580 938 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c1261d8d
AG		 939 int host_port;
940 char buf[256] = "";
f13b572c
JK		 941 const char *src_str, *p;
942 SlirpState *s;
c1261d8d 943 int is_udp = 0;
9c12a6f2 944 int err;
c1261d8d 945
f13b572c
JK		 946 if (arg2) {
947 s = slirp_lookup(mon, arg1, arg2);
948 src_str = arg3;
949 } else {
950 s = slirp_lookup(mon, NULL, NULL);
951 src_str = arg1;
952 }
953 if (!s) {
c1261d8d 954 return;
f3546deb 955 }
c1261d8d 956
3c6a0580 957 if (!src_str || !src_str[0])
c1261d8d
AG		 958 goto fail_syntax;
959
f13b572c 960 p = src_str;
c1261d8d
AG		 961 get_str_sep(buf, sizeof(buf), &p, ':');
962
963 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
964 is_udp = 0;
965 } else if (!strcmp(buf, "udp")) {
966 is_udp = 1;
967 } else {
968 goto fail_syntax;
969 }
970
3c6a0580
JK		 971 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
972 goto fail_syntax;
973 }
974 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
975 goto fail_syntax;
976 }
977
c1261d8d
AG		 978 host_port = atoi(p);
979
b1c99fcd 980 err = slirp_remove_hostfwd(TAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
9f8bd042 981 host_addr, host_port);
c1261d8d 982
9c12a6f2
JK		 983 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
984 err ? "removed" : "not found");
c1261d8d
AG		 985 return;
986
987 fail_syntax:
988 monitor_printf(mon, "invalid format\n");
989}
990
9f8bd042 991static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
3c6a0580 992 int legacy_format)
63a01ef8 993{
3c6a0580 994 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c92ef6a2 995 struct in_addr guest_addr = { .s_addr = 0 };
63a01ef8 996 int host_port, guest_port;
b8e8af38 997 const char *p;
c92ef6a2 998 char buf[256];
b8e8af38 999 int is_udp;
c92ef6a2 1000 char *end;
1c6ed9f3 1001
63a01ef8 1002 p = redir_str;
f13b572c 1003 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 1004 goto fail_syntax;
b8e8af38 1005 }
d4ebe193 1006 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
63a01ef8
AL		 1007 is_udp = 0;
1008 } else if (!strcmp(buf, "udp")) {
1009 is_udp = 1;
1010 } else {
d4ebe193 1011 goto fail_syntax;
63a01ef8
AL		 1012 }
1013
3c6a0580
JK		 1014 if (!legacy_format) {
1015 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1016 goto fail_syntax;
1017 }
1018 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
1019 goto fail_syntax;
1020 }
1021 }
1022
1023 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
d4ebe193 1024 goto fail_syntax;
b8e8af38 1025 }
c92ef6a2
JK		 1026 host_port = strtol(buf, &end, 0);
1027 if (*end != '\0' || host_port < 1 || host_port > 65535) {
d4ebe193 1028 goto fail_syntax;
b8e8af38 1029 }
63a01ef8 1030
b8e8af38 1031 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 1032 goto fail_syntax;
b8e8af38 1033 }
c92ef6a2 1034 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
d4ebe193 1035 goto fail_syntax;
b8e8af38 1036 }
63a01ef8 1037
c92ef6a2
JK		 1038 guest_port = strtol(p, &end, 0);
1039 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
d4ebe193 1040 goto fail_syntax;
b8e8af38 1041 }
63a01ef8 1042
9f8bd042
JK		 1043 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1044 guest_port) < 0) {
c92ef6a2
JK		 1045 config_error(mon, "could not set up host forwarding rule '%s'\n",
1046 redir_str);
63a01ef8
AL		 1047 }
1048 return;
d4ebe193
AL		 1049
1050 fail_syntax:
c92ef6a2 1051 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
63a01ef8
AL		 1052}
1053
f13b572c
JK		 1054void net_slirp_hostfwd_add(Monitor *mon, const char *arg1,
1055 const char *arg2, const char *arg3)
b8e8af38 1056{
f13b572c
JK		 1057 const char *redir_str;
1058 SlirpState *s;
1059
1060 if (arg2) {
1061 s = slirp_lookup(mon, arg1, arg2);
1062 redir_str = arg3;
1063 } else {
1064 s = slirp_lookup(mon, NULL, NULL);
1065 redir_str = arg1;
1066 }
1067 if (s) {
1068 slirp_hostfwd(s, mon, redir_str, 0);
b8e8af38
JK		 1069 }
1070
f3546deb
JK		 1071}
1072
1073void net_slirp_redir(const char *redir_str)
1074{
1075 struct slirp_config_str *config;
1076
b1c99fcd 1077 if (TAILQ_EMPTY(&slirp_stacks)) {
f3546deb
JK		 1078 config = qemu_malloc(sizeof(*config));
1079 pstrcpy(config->str, sizeof(config->str), redir_str);
3c6a0580 1080 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
f3546deb
JK		 1081 config->next = slirp_configs;
1082 slirp_configs = config;
b8e8af38
JK		 1083 return;
1084 }
1085
b1c99fcd 1086 slirp_hostfwd(TAILQ_FIRST(&slirp_stacks), NULL, redir_str, 1);
b8e8af38
JK		 1087}
1088
63a01ef8
AL		 1089#ifndef _WIN32
1090
63a01ef8 1091/* automatic user mode samba server configuration */
28432466 1092static void slirp_smb_cleanup(SlirpState *s)
63a01ef8 1093{
28432466 1094 char cmd[128];
09c18925 1095
28432466
JK		 1096 if (s->smb_dir[0] != '\0') {
1097 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1098 system(cmd);
1099 s->smb_dir[0] = '\0';
1100 }
63a01ef8
AL		 1101}
1102
492efabd 1103static void slirp_smb(SlirpState* s, Monitor *mon, const char *exported_dir,
9f8bd042 1104 struct in_addr vserver_addr)
63a01ef8 1105{
28432466
JK		 1106 static int instance;
1107 char smb_conf[128];
1108 char smb_cmdline[128];
63a01ef8
AL		 1109 FILE *f;
1110
28432466
JK		 1111 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1112 (long)getpid(), instance++);
1113 if (mkdir(s->smb_dir, 0700) < 0) {
1114 config_error(mon, "could not create samba server dir '%s'\n",
1115 s->smb_dir);
492efabd 1116 return;
63a01ef8 1117 }
28432466 1118 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
63a01ef8
AL		 1119
1120 f = fopen(smb_conf, "w");
1121 if (!f) {
28432466 1122 slirp_smb_cleanup(s);
492efabd
JK		 1123 config_error(mon, "could not create samba server "
1124 "configuration file '%s'\n", smb_conf);
1125 return;
63a01ef8
AL		 1126 }
1127 fprintf(f,
1128 "[global]\n"
1129 "private dir=%s\n"
1130 "smb ports=0\n"
1131 "socket address=127.0.0.1\n"
1132 "pid directory=%s\n"
1133 "lock directory=%s\n"
1134 "log file=%s/log.smbd\n"
1135 "smb passwd file=%s/smbpasswd\n"
1136 "security = share\n"
1137 "[qemu]\n"
1138 "path=%s\n"
1139 "read only=no\n"
1140 "guest ok=yes\n",
28432466
JK		 1141 s->smb_dir,
1142 s->smb_dir,
1143 s->smb_dir,
1144 s->smb_dir,
1145 s->smb_dir,
63a01ef8
AL		 1146 exported_dir
1147 );
1148 fclose(f);
63a01ef8
AL		 1149
1150 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1151 SMBD_COMMAND, smb_conf);
1152
b0dc7873 1153 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
28432466 1154 slirp_smb_cleanup(s);
492efabd 1155 config_error(mon, "conflicting/invalid smbserver address\n");
c92ef6a2 1156 }
63a01ef8
AL		 1157}
1158
ad196a9d 1159/* automatic user mode samba server configuration (legacy interface) */
b8e8af38
JK		 1160void net_slirp_smb(const char *exported_dir)
1161{
c92ef6a2
JK		 1162 struct in_addr vserver_addr = { .s_addr = 0 };
1163
ad196a9d 1164 if (legacy_smb_export) {
b8e8af38
JK		 1165 fprintf(stderr, "-smb given twice\n");
1166 exit(1);
1167 }
ad196a9d 1168 legacy_smb_export = exported_dir;
b1c99fcd 1169 if (!TAILQ_EMPTY(&slirp_stacks)) {
492efabd
JK		 1170 slirp_smb(TAILQ_FIRST(&slirp_stacks), NULL, exported_dir,
1171 vserver_addr);
b8e8af38
JK		 1172 }
1173}
1174
63a01ef8 1175#endif /* !defined(_WIN32) */
b8e8af38 1176
c92ef6a2 1177struct GuestFwd {
8ca9217d 1178 CharDriverState *hd;
c92ef6a2 1179 struct in_addr server;
8ca9217d 1180 int port;
9f8bd042 1181 Slirp *slirp;
511d2b14 1182};
8ca9217d 1183
c92ef6a2 1184static int guestfwd_can_read(void *opaque)
8ca9217d 1185{
c92ef6a2 1186 struct GuestFwd *fwd = opaque;
9f8bd042 1187 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
8ca9217d
AL		 1188}
1189
c92ef6a2 1190static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
8ca9217d 1191{
c92ef6a2 1192 struct GuestFwd *fwd = opaque;
9f8bd042 1193 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
8ca9217d
AL		 1194}
1195
9f8bd042 1196static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
c92ef6a2 1197 int legacy_format)
ad196a9d 1198{
c92ef6a2
JK		 1199 struct in_addr server = { .s_addr = 0 };
1200 struct GuestFwd *fwd;
1201 const char *p;
1202 char buf[128];
1203 char *end;
ad196a9d
JK		 1204 int port;
1205
c92ef6a2
JK		 1206 p = config_str;
1207 if (legacy_format) {
1208 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1209 goto fail_syntax;
1210 }
1211 } else {
1212 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1213 goto fail_syntax;
1214 }
1215 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1216 goto fail_syntax;
1217 }
1218 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1219 goto fail_syntax;
1220 }
1221 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1222 goto fail_syntax;
1223 }
1224 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1225 goto fail_syntax;
1226 }
1227 }
1228 port = strtol(buf, &end, 10);
1229 if (*end != '\0' || port < 1 || port > 65535) {
1230 goto fail_syntax;
ad196a9d 1231 }
ad196a9d 1232
c92ef6a2
JK		 1233 fwd = qemu_malloc(sizeof(struct GuestFwd));
1234 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1235 fwd->hd = qemu_chr_open(buf, p, NULL);
1236 if (!fwd->hd) {
1237 config_error(mon, "could not open guest forwarding device '%s'\n",
1238 buf);
1239 qemu_free(fwd);
ad196a9d
JK		 1240 return;
1241 }
ad196a9d 1242
b0dc7873 1243 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
c92ef6a2
JK		 1244 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1245 "rule '%s'\n", config_str);
1246 qemu_free(fwd);
1247 return;
1248 }
b0dc7873
JK		 1249 fwd->server = server;
1250 fwd->port = port;
1251 fwd->slirp = s->slirp;
1252
c92ef6a2
JK		 1253 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1254 NULL, fwd);
ad196a9d 1255 return;
c92ef6a2
JK		 1256
1257 fail_syntax:
1258 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
ad196a9d
JK		 1259}
1260
6dbe553f
JK		 1261void do_info_usernet(Monitor *mon)
1262{
b1c99fcd 1263 SlirpState *s;
9f8bd042 1264
b1c99fcd
JK		 1265 TAILQ_FOREACH(s, &slirp_stacks, entry) {
1266 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1267 slirp_connection_info(s->slirp, mon);
9f8bd042 1268 }
6dbe553f
JK		 1269}
1270
63a01ef8
AL		 1271#endif /* CONFIG_SLIRP */
1272
1273#if !defined(_WIN32)
1274
1275typedef struct TAPState {
1276 VLANClientState *vc;
1277 int fd;
1278 char down_script[1024];
973cbd37 1279 char down_script_arg[128];
5b01e886 1280 uint8_t buf[4096];
b664e367 1281 unsigned int read_poll : 1;
1f7babf6 1282 unsigned int write_poll : 1;
63a01ef8
AL		 1283} TAPState;
1284
b946a153
AL		 1285static int launch_script(const char *setup_script, const char *ifname, int fd);
1286
b664e367
MM		 1287static int tap_can_send(void *opaque);
1288static void tap_send(void *opaque);
1f7babf6 1289static void tap_writable(void *opaque);
b664e367
MM		 1290
1291static void tap_update_fd_handler(TAPState *s)
1292{
1293 qemu_set_fd_handler2(s->fd,
1294 s->read_poll ? tap_can_send : NULL,
1295 s->read_poll ? tap_send : NULL,
1f7babf6 1296 s->write_poll ? tap_writable : NULL,
b664e367
MM		 1297 s);
1298}
1299
1300static void tap_read_poll(TAPState *s, int enable)
1301{
1302 s->read_poll = !!enable;
1303 tap_update_fd_handler(s);
1304}
1305
1f7babf6
MM		 1306static void tap_write_poll(TAPState *s, int enable)
1307{
1308 s->write_poll = !!enable;
1309 tap_update_fd_handler(s);
1310}
1311
1312static void tap_writable(void *opaque)
1313{
1314 TAPState *s = opaque;
1315
1316 tap_write_poll(s, 0);
1317
1318 qemu_flush_queued_packets(s->vc);
1319}
1320
e3f5ec2b 1321static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
b535b7b2
AL		 1322 int iovcnt)
1323{
e3f5ec2b 1324 TAPState *s = vc->opaque;
b535b7b2
AL		 1325 ssize_t len;
1326
1327 do {
1328 len = writev(s->fd, iov, iovcnt);
1f7babf6
MM		 1329 } while (len == -1 && errno == EINTR);
1330
1331 if (len == -1 && errno == EAGAIN) {
1332 tap_write_poll(s, 1);
1333 return 0;
1334 }
b535b7b2
AL		 1335
1336 return len;
1337}
b535b7b2 1338
4f1c942b 1339static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1340{
e3f5ec2b 1341 TAPState *s = vc->opaque;
4f1c942b
MM		 1342 ssize_t len;
1343
1344 do {
1345 len = write(s->fd, buf, size);
1346 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1347
1348 return len;
63a01ef8
AL		 1349}
1350
3471b757
MM		 1351static int tap_can_send(void *opaque)
1352{
1353 TAPState *s = opaque;
1354
1355 return qemu_can_send_packet(s->vc);
1356}
1357
63a01ef8 1358#ifdef __sun__
5a6d8815
MM		 1359static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1360{
63a01ef8
AL		 1361 struct strbuf sbuf;
1362 int f = 0;
5a6d8815
MM		 1363
1364 sbuf.maxlen = maxlen;
3f4cb3d3 1365 sbuf.buf = (char *)buf;
5a6d8815
MM		 1366
1367 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1368}
63a01ef8 1369#else
5a6d8815
MM		 1370static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1371{
1372 return read(tapfd, buf, maxlen);
1373}
63a01ef8 1374#endif
5a6d8815 1375
783527a9 1376static void tap_send_completed(VLANClientState *vc, ssize_t len)
e19eb224
MM		 1377{
1378 TAPState *s = vc->opaque;
b664e367 1379 tap_read_poll(s, 1);
e19eb224
MM		 1380}
1381
5a6d8815
MM		 1382static void tap_send(void *opaque)
1383{
1384 TAPState *s = opaque;
5a6d8815
MM		 1385 int size;
1386
e19eb224
MM		 1387 do {
1388 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1389 if (size <= 0) {
1390 break;
1391 }
1392
1393 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1394 if (size == 0) {
b664e367 1395 tap_read_poll(s, 0);
e19eb224
MM		 1396 }
1397 } while (size > 0);
63a01ef8
AL		 1398}
1399
0df0ff6d 1400#ifdef TUNSETSNDBUF
fc5b81d1
MM		 1401/* sndbuf should be set to a value lower than the tx queue
1402 * capacity of any destination network interface.
1403 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1404 * a good default, given a 1500 byte MTU.
1405 */
1406#define TAP_DEFAULT_SNDBUF 1024*1024
1407
1408static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1409{
1410 int sndbuf = TAP_DEFAULT_SNDBUF;
1411
1412 if (sndbuf_str) {
1413 sndbuf = atoi(sndbuf_str);
1414 }
1415
1416 if (!sndbuf) {
1417 sndbuf = INT_MAX;
1418 }
1419
d026fb6d 1420 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && sndbuf_str) {
0df0ff6d
MM		 1421 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1422 strerror(errno));
1423 }
fc5b81d1 1424}
0df0ff6d 1425#else
fc5b81d1
MM		 1426static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1427{
1428 if (sndbuf_str) {
1429 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1430 }
0df0ff6d 1431}
fc5b81d1 1432#endif /* TUNSETSNDBUF */
0df0ff6d 1433
b946a153
AL		 1434static void tap_cleanup(VLANClientState *vc)
1435{
1436 TAPState *s = vc->opaque;
1437
b9adce2c
MM		 1438 qemu_purge_queued_packets(vc);
1439
b946a153
AL		 1440 if (s->down_script[0])
1441 launch_script(s->down_script, s->down_script_arg, s->fd);
1442
b664e367 1443 tap_read_poll(s, 0);
1f7babf6 1444 tap_write_poll(s, 0);
b946a153
AL		 1445 close(s->fd);
1446 qemu_free(s);
1447}
1448
63a01ef8
AL		 1449/* fd support */
1450
7a9f6e4a
AL		 1451static TAPState *net_tap_fd_init(VLANState *vlan,
1452 const char *model,
1453 const char *name,
1454 int fd)
63a01ef8
AL		 1455{
1456 TAPState *s;
1457
1458 s = qemu_mallocz(sizeof(TAPState));
63a01ef8 1459 s->fd = fd;
463af534
MM		 1460 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1461 tap_receive_iov, tap_cleanup, s);
b664e367 1462 tap_read_poll(s, 1);
7cb7434b 1463 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
63a01ef8
AL		 1464 return s;
1465}
1466
179a2c19 1467#if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
63a01ef8
AL		 1468static int tap_open(char *ifname, int ifname_size)
1469{
1470 int fd;
1471 char *dev;
1472 struct stat s;
1473
1474 TFR(fd = open("/dev/tap", O_RDWR));
1475 if (fd < 0) {
1476 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1477 return -1;
1478 }
1479
1480 fstat(fd, &s);
1481 dev = devname(s.st_rdev, S_IFCHR);
1482 pstrcpy(ifname, ifname_size, dev);
1483
1484 fcntl(fd, F_SETFL, O_NONBLOCK);
1485 return fd;
1486}
1487#elif defined(__sun__)
1488#define TUNNEWPPA (('T'<<16) | 0x0001)
1489/*
1490 * Allocate TAP device, returns opened fd.
1491 * Stores dev name in the first arg(must be large enough).
1492 */
3f4cb3d3 1493static int tap_alloc(char *dev, size_t dev_size)
63a01ef8
AL		 1494{
1495 int tap_fd, if_fd, ppa = -1;
1496 static int ip_fd = 0;
1497 char *ptr;
1498
1499 static int arp_fd = 0;
1500 int ip_muxid, arp_muxid;
1501 struct strioctl strioc_if, strioc_ppa;
1502 int link_type = I_PLINK;;
1503 struct lifreq ifr;
1504 char actual_name[32] = "";
1505
1506 memset(&ifr, 0x0, sizeof(ifr));
1507
1508 if( *dev ){
1509 ptr = dev;
47398b9c 1510 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
63a01ef8
AL		 1511 ppa = atoi(ptr);
1512 }
1513
1514 /* Check if IP device was opened */
1515 if( ip_fd )
1516 close(ip_fd);
1517
1518 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1519 if (ip_fd < 0) {
1520 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1521 return -1;
1522 }
1523
1524 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1525 if (tap_fd < 0) {
1526 syslog(LOG_ERR, "Can't open /dev/tap");
1527 return -1;
1528 }
1529
1530 /* Assign a new PPA and get its unit number. */
1531 strioc_ppa.ic_cmd = TUNNEWPPA;
1532 strioc_ppa.ic_timout = 0;
1533 strioc_ppa.ic_len = sizeof(ppa);
1534 strioc_ppa.ic_dp = (char *)&ppa;
1535 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1536 syslog (LOG_ERR, "Can't assign new interface");
1537
1538 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1539 if (if_fd < 0) {
1540 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1541 return -1;
1542 }
1543 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1544 syslog(LOG_ERR, "Can't push IP module");
1545 return -1;
1546 }
1547
1548 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1549 syslog(LOG_ERR, "Can't get flags\n");
1550
1551 snprintf (actual_name, 32, "tap%d", ppa);
1552 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1553
1554 ifr.lifr_ppa = ppa;
1555 /* Assign ppa according to the unit number returned by tun device */
1556
1557 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1558 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1559 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1560 syslog (LOG_ERR, "Can't get flags\n");
1561 /* Push arp module to if_fd */
1562 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1563 syslog (LOG_ERR, "Can't push ARP module (2)");
1564
1565 /* Push arp module to ip_fd */
1566 if (ioctl (ip_fd, I_POP, NULL) < 0)
1567 syslog (LOG_ERR, "I_POP failed\n");
1568 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1569 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1570 /* Open arp_fd */
1571 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1572 if (arp_fd < 0)
1573 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1574
1575 /* Set ifname to arp */
1576 strioc_if.ic_cmd = SIOCSLIFNAME;
1577 strioc_if.ic_timout = 0;
1578 strioc_if.ic_len = sizeof(ifr);
1579 strioc_if.ic_dp = (char *)&ifr;
1580 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1581 syslog (LOG_ERR, "Can't set ifname to arp\n");
1582 }
1583
1584 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1585 syslog(LOG_ERR, "Can't link TAP device to IP");
1586 return -1;
1587 }
1588
1589 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1590 syslog (LOG_ERR, "Can't link TAP device to ARP");
1591
1592 close (if_fd);
1593
1594 memset(&ifr, 0x0, sizeof(ifr));
1595 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1596 ifr.lifr_ip_muxid = ip_muxid;
1597 ifr.lifr_arp_muxid = arp_muxid;
1598
1599 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1600 {
1601 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1602 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1603 syslog (LOG_ERR, "Can't set multiplexor id");
1604 }
1605
1606 snprintf(dev, dev_size, "tap%d", ppa);
1607 return tap_fd;
1608}
1609
1610static int tap_open(char *ifname, int ifname_size)
1611{
1612 char dev[10]="";
1613 int fd;
1614 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1615 fprintf(stderr, "Cannot allocate TAP device\n");
1616 return -1;
1617 }
1618 pstrcpy(ifname, ifname_size, dev);
1619 fcntl(fd, F_SETFL, O_NONBLOCK);
1620 return fd;
1621}
b29fe3ed 1622#elif defined (_AIX)
1623static int tap_open(char *ifname, int ifname_size)
1624{
1625 fprintf (stderr, "no tap on AIX\n");
1626 return -1;
1627}
63a01ef8
AL		 1628#else
1629static int tap_open(char *ifname, int ifname_size)
1630{
1631 struct ifreq ifr;
1632 int fd, ret;
1633
1634 TFR(fd = open("/dev/net/tun", O_RDWR));
1635 if (fd < 0) {
1636 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1637 return -1;
1638 }
1639 memset(&ifr, 0, sizeof(ifr));
1640 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1641 if (ifname[0] != '\0')
1642 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1643 else
1644 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1645 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1646 if (ret != 0) {
1647 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1648 close(fd);
1649 return -1;
1650 }
1651 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1652 fcntl(fd, F_SETFL, O_NONBLOCK);
1653 return fd;
1654}
1655#endif
1656
1657static int launch_script(const char *setup_script, const char *ifname, int fd)
1658{
7c3370d4 1659 sigset_t oldmask, mask;
63a01ef8
AL		 1660 int pid, status;
1661 char *args[3];
1662 char **parg;
1663
7c3370d4
JK		 1664 sigemptyset(&mask);
1665 sigaddset(&mask, SIGCHLD);
1666 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1667
1668 /* try to launch network script */
1669 pid = fork();
1670 if (pid == 0) {
1671 int open_max = sysconf(_SC_OPEN_MAX), i;
1672
1673 for (i = 0; i < open_max; i++) {
1674 if (i != STDIN_FILENO &&
1675 i != STDOUT_FILENO &&
1676 i != STDERR_FILENO &&
1677 i != fd) {
1678 close(i);
63a01ef8
AL		 1679 }
1680 }
7c3370d4
JK		 1681 parg = args;
1682 *parg++ = (char *)setup_script;
1683 *parg++ = (char *)ifname;
1684 *parg++ = NULL;
1685 execv(setup_script, args);
1686 _exit(1);
1687 } else if (pid > 0) {
1688 while (waitpid(pid, &status, 0) != pid) {
1689 /* loop */
1690 }
1691 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1692
1693 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1694 return 0;
1695 }
1696 }
1697 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1698 return -1;
63a01ef8
AL		 1699}
1700
4a77b25e
MM		 1701static TAPState *net_tap_init(VLANState *vlan, const char *model,
1702 const char *name, const char *ifname1,
1703 const char *setup_script, const char *down_script)
63a01ef8
AL		 1704{
1705 TAPState *s;
1706 int fd;
1707 char ifname[128];
1708
1709 if (ifname1 != NULL)
1710 pstrcpy(ifname, sizeof(ifname), ifname1);
1711 else
1712 ifname[0] = '\0';
1713 TFR(fd = tap_open(ifname, sizeof(ifname)));
1714 if (fd < 0)
4a77b25e 1715 return NULL;
63a01ef8
AL		 1716
1717 if (!setup_script || !strcmp(setup_script, "no"))
1718 setup_script = "";
4a77b25e
MM		 1719 if (setup_script[0] != '\0' &&
1720 launch_script(setup_script, ifname, fd)) {
1721 return NULL;
63a01ef8 1722 }
7a9f6e4a 1723 s = net_tap_fd_init(vlan, model, name, fd);
63a01ef8 1724 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
7cb7434b
AL		 1725 "ifname=%s,script=%s,downscript=%s",
1726 ifname, setup_script, down_script);
973cbd37 1727 if (down_script && strcmp(down_script, "no")) {
63a01ef8 1728 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
973cbd37
AL		 1729 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1730 }
4a77b25e 1731 return s;
63a01ef8
AL		 1732}
1733
1734#endif /* !_WIN32 */
1735
1736#if defined(CONFIG_VDE)
1737typedef struct VDEState {
1738 VLANClientState *vc;
1739 VDECONN *vde;
1740} VDEState;
1741
1742static void vde_to_qemu(void *opaque)
1743{
1744 VDEState *s = opaque;
1745 uint8_t buf[4096];
1746 int size;
1747
cc63bb0f 1748 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
63a01ef8
AL		 1749 if (size > 0) {
1750 qemu_send_packet(s->vc, buf, size);
1751 }
1752}
1753
4f1c942b 1754static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1755{
e3f5ec2b 1756 VDEState *s = vc->opaque;
068daedd 1757 ssize_t ret;
4f1c942b
MM		 1758
1759 do {
1760 ret = vde_send(s->vde, (const char *)buf, size, 0);
1761 } while (ret < 0 && errno == EINTR);
1762
1763 return ret;
63a01ef8
AL		 1764}
1765
b946a153
AL		 1766static void vde_cleanup(VLANClientState *vc)
1767{
1768 VDEState *s = vc->opaque;
1769 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1770 vde_close(s->vde);
1771 qemu_free(s);
1772}
1773
7a9f6e4a
AL		 1774static int net_vde_init(VLANState *vlan, const char *model,
1775 const char *name, const char *sock,
bf38c1a0 1776 int port, const char *group, int mode)
63a01ef8
AL		 1777{
1778 VDEState *s;
1779 char *init_group = strlen(group) ? (char *)group : NULL;
1780 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1781
1782 struct vde_open_args args = {
1783 .port = port,
1784 .group = init_group,
1785 .mode = mode,
1786 };
1787
1788 s = qemu_mallocz(sizeof(VDEState));
cc63bb0f 1789 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
63a01ef8
AL		 1790 if (!s->vde){
1791 free(s);
1792 return -1;
1793 }
e3f5ec2b 1794 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
b946a153 1795 NULL, vde_cleanup, s);
63a01ef8 1796 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
7cb7434b 1797 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
63a01ef8
AL		 1798 sock, vde_datafd(s->vde));
1799 return 0;
1800}
1801#endif
1802
1803/* network connection */
1804typedef struct NetSocketState {
1805 VLANClientState *vc;
1806 int fd;
1807 int state; /* 0 = getting length, 1 = getting data */
abcd2baa
AL		 1808 unsigned int index;
1809 unsigned int packet_len;
63a01ef8
AL		 1810 uint8_t buf[4096];
1811 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1812} NetSocketState;
1813
1814typedef struct NetSocketListenState {
1815 VLANState *vlan;
bf38c1a0 1816 char *model;
7a9f6e4a 1817 char *name;
63a01ef8
AL		 1818 int fd;
1819} NetSocketListenState;
1820
1821/* XXX: we consider we can send the whole packet without blocking */
4f1c942b 1822static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1823{
e3f5ec2b 1824 NetSocketState *s = vc->opaque;
63a01ef8
AL		 1825 uint32_t len;
1826 len = htonl(size);
1827
1828 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
4f1c942b 1829 return send_all(s->fd, buf, size);
63a01ef8
AL		 1830}
1831
4f1c942b 1832static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1833{
e3f5ec2b 1834 NetSocketState *s = vc->opaque;
4f1c942b 1835
70503264 1836 return sendto(s->fd, (const void *)buf, size, 0,
4f1c942b 1837 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
63a01ef8
AL		 1838}
1839
1840static void net_socket_send(void *opaque)
1841{
1842 NetSocketState *s = opaque;
abcd2baa
AL		 1843 int size, err;
1844 unsigned l;
63a01ef8
AL		 1845 uint8_t buf1[4096];
1846 const uint8_t *buf;
1847
c5b76b38 1848 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
63a01ef8
AL		 1849 if (size < 0) {
1850 err = socket_error();
1851 if (err != EWOULDBLOCK)
1852 goto eoc;
1853 } else if (size == 0) {
1854 /* end of connection */
1855 eoc:
1856 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1857 closesocket(s->fd);
1858 return;
1859 }
1860 buf = buf1;
1861 while (size > 0) {
1862 /* reassemble a packet from the network */
1863 switch(s->state) {
1864 case 0:
1865 l = 4 - s->index;
1866 if (l > size)
1867 l = size;
1868 memcpy(s->buf + s->index, buf, l);
1869 buf += l;
1870 size -= l;
1871 s->index += l;
1872 if (s->index == 4) {
1873 /* got length */
1874 s->packet_len = ntohl(*(uint32_t *)s->buf);
1875 s->index = 0;
1876 s->state = 1;
1877 }
1878 break;
1879 case 1:
1880 l = s->packet_len - s->index;
1881 if (l > size)
1882 l = size;
abcd2baa
AL		 1883 if (s->index + l <= sizeof(s->buf)) {
1884 memcpy(s->buf + s->index, buf, l);
1885 } else {
1886 fprintf(stderr, "serious error: oversized packet received,"
1887 "connection terminated.\n");
1888 s->state = 0;
1889 goto eoc;
1890 }
1891
63a01ef8
AL		 1892 s->index += l;
1893 buf += l;
1894 size -= l;
1895 if (s->index >= s->packet_len) {
1896 qemu_send_packet(s->vc, s->buf, s->packet_len);
1897 s->index = 0;
1898 s->state = 0;
1899 }
1900 break;
1901 }
1902 }
1903}
1904
1905static void net_socket_send_dgram(void *opaque)
1906{
1907 NetSocketState *s = opaque;
1908 int size;
1909
c5b76b38 1910 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
63a01ef8
AL		 1911 if (size < 0)
1912 return;
1913 if (size == 0) {
1914 /* end of connection */
1915 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1916 return;
1917 }
1918 qemu_send_packet(s->vc, s->buf, size);
1919}
1920
1921static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1922{
1923 struct ip_mreq imr;
1924 int fd;
1925 int val, ret;
1926 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1927 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1928 inet_ntoa(mcastaddr->sin_addr),
1929 (int)ntohl(mcastaddr->sin_addr.s_addr));
1930 return -1;
1931
1932 }
1933 fd = socket(PF_INET, SOCK_DGRAM, 0);
1934 if (fd < 0) {
1935 perror("socket(PF_INET, SOCK_DGRAM)");
1936 return -1;
1937 }
1938
1939 val = 1;
1940 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1941 (const char *)&val, sizeof(val));
1942 if (ret < 0) {
1943 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1944 goto fail;
1945 }
1946
1947 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1948 if (ret < 0) {
1949 perror("bind");
1950 goto fail;
1951 }
1952
1953 /* Add host to multicast group */
1954 imr.imr_multiaddr = mcastaddr->sin_addr;
1955 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1956
1957 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1958 (const char *)&imr, sizeof(struct ip_mreq));
1959 if (ret < 0) {
1960 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1961 goto fail;
1962 }
1963
1964 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1965 val = 1;
1966 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1967 (const char *)&val, sizeof(val));
1968 if (ret < 0) {
1969 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1970 goto fail;
1971 }
1972
1973 socket_set_nonblock(fd);
1974 return fd;
1975fail:
1976 if (fd >= 0)
1977 closesocket(fd);
1978 return -1;
1979}
1980
b946a153
AL		 1981static void net_socket_cleanup(VLANClientState *vc)
1982{
1983 NetSocketState *s = vc->opaque;
1984 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1985 close(s->fd);
1986 qemu_free(s);
1987}
1988
7a9f6e4a
AL		 1989static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1990 const char *model,
1991 const char *name,
bf38c1a0 1992 int fd, int is_connected)
63a01ef8
AL		 1993{
1994 struct sockaddr_in saddr;
1995 int newfd;
1996 socklen_t saddr_len;
1997 NetSocketState *s;
1998
1999 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
2000 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
2001 * by ONLY ONE process: we must "clone" this dgram socket --jjo
2002 */
2003
2004 if (is_connected) {
2005 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
2006 /* must be bound */
2007 if (saddr.sin_addr.s_addr==0) {
2008 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
2009 fd);
2010 return NULL;
2011 }
2012 /* clone dgram socket */
2013 newfd = net_socket_mcast_create(&saddr);
2014 if (newfd < 0) {
2015 /* error already reported by net_socket_mcast_create() */
2016 close(fd);
2017 return NULL;
2018 }
2019 /* clone newfd to fd, close newfd */
2020 dup2(newfd, fd);
2021 close(newfd);
2022
2023 } else {
2024 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2025 fd, strerror(errno));
2026 return NULL;
2027 }
2028 }
2029
2030 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8
AL		 2031 s->fd = fd;
2032
463af534 2033 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
b946a153 2034 NULL, net_socket_cleanup, s);
63a01ef8
AL		 2035 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2036
2037 /* mcast: save bound address as dst */
2038 if (is_connected) s->dgram_dst=saddr;
2039
2040 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2041 "socket: fd=%d (%s mcast=%s:%d)",
2042 fd, is_connected? "cloned" : "",
2043 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2044 return s;
2045}
2046
2047static void net_socket_connect(void *opaque)
2048{
2049 NetSocketState *s = opaque;
2050 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2051}
2052
7a9f6e4a
AL		 2053static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2054 const char *model,
2055 const char *name,
bf38c1a0 2056 int fd, int is_connected)
63a01ef8
AL		 2057{
2058 NetSocketState *s;
2059 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8 2060 s->fd = fd;
463af534 2061 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
b946a153 2062 NULL, net_socket_cleanup, s);
63a01ef8
AL		 2063 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2064 "socket: fd=%d", fd);
2065 if (is_connected) {
2066 net_socket_connect(s);
2067 } else {
2068 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2069 }
2070 return s;
2071}
2072
7a9f6e4a
AL		 2073static NetSocketState *net_socket_fd_init(VLANState *vlan,
2074 const char *model, const char *name,
bf38c1a0 2075 int fd, int is_connected)
63a01ef8
AL		 2076{
2077 int so_type=-1, optlen=sizeof(so_type);
2078
2079 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2080 (socklen_t *)&optlen)< 0) {
2081 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2082 return NULL;
2083 }
2084 switch(so_type) {
2085 case SOCK_DGRAM:
7a9f6e4a 2086 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
63a01ef8 2087 case SOCK_STREAM:
7a9f6e4a 2088 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2089 default:
2090 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2091 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
7a9f6e4a 2092 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2093 }
2094 return NULL;
2095}
2096
2097static void net_socket_accept(void *opaque)
2098{
2099 NetSocketListenState *s = opaque;
2100 NetSocketState *s1;
2101 struct sockaddr_in saddr;
2102 socklen_t len;
2103 int fd;
2104
2105 for(;;) {
2106 len = sizeof(saddr);
2107 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2108 if (fd < 0 && errno != EINTR) {
2109 return;
2110 } else if (fd >= 0) {
2111 break;
2112 }
2113 }
7a9f6e4a 2114 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
63a01ef8
AL		 2115 if (!s1) {
2116 closesocket(fd);
2117 } else {
2118 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2119 "socket: connection from %s:%d",
2120 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2121 }
2122}
2123
7a9f6e4a
AL		 2124static int net_socket_listen_init(VLANState *vlan,
2125 const char *model,
2126 const char *name,
bf38c1a0 2127 const char *host_str)
63a01ef8
AL		 2128{
2129 NetSocketListenState *s;
2130 int fd, val, ret;
2131 struct sockaddr_in saddr;
2132
2133 if (parse_host_port(&saddr, host_str) < 0)
2134 return -1;
2135
2136 s = qemu_mallocz(sizeof(NetSocketListenState));
63a01ef8
AL		 2137
2138 fd = socket(PF_INET, SOCK_STREAM, 0);
2139 if (fd < 0) {
2140 perror("socket");
2141 return -1;
2142 }
2143 socket_set_nonblock(fd);
2144
2145 /* allow fast reuse */
2146 val = 1;
2147 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2148
2149 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2150 if (ret < 0) {
2151 perror("bind");
2152 return -1;
2153 }
2154 ret = listen(fd, 0);
2155 if (ret < 0) {
2156 perror("listen");
2157 return -1;
2158 }
2159 s->vlan = vlan;
bf38c1a0 2160 s->model = strdup(model);
ea053add 2161 s->name = name ? strdup(name) : NULL;
63a01ef8
AL		 2162 s->fd = fd;
2163 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2164 return 0;
2165}
2166
7a9f6e4a
AL		 2167static int net_socket_connect_init(VLANState *vlan,
2168 const char *model,
2169 const char *name,
bf38c1a0 2170 const char *host_str)
63a01ef8
AL		 2171{
2172 NetSocketState *s;
2173 int fd, connected, ret, err;
2174 struct sockaddr_in saddr;
2175
2176 if (parse_host_port(&saddr, host_str) < 0)
2177 return -1;
2178
2179 fd = socket(PF_INET, SOCK_STREAM, 0);
2180 if (fd < 0) {
2181 perror("socket");
2182 return -1;
2183 }
2184 socket_set_nonblock(fd);
2185
2186 connected = 0;
2187 for(;;) {
2188 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2189 if (ret < 0) {
2190 err = socket_error();
2191 if (err == EINTR || err == EWOULDBLOCK) {
2192 } else if (err == EINPROGRESS) {
2193 break;
2194#ifdef _WIN32
2195 } else if (err == WSAEALREADY) {
2196 break;
2197#endif
2198 } else {
2199 perror("connect");
2200 closesocket(fd);
2201 return -1;
2202 }
2203 } else {
2204 connected = 1;
2205 break;
2206 }
2207 }
7a9f6e4a 2208 s = net_socket_fd_init(vlan, model, name, fd, connected);
63a01ef8
AL		 2209 if (!s)
2210 return -1;
2211 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2212 "socket: connect to %s:%d",
2213 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2214 return 0;
2215}
2216
7a9f6e4a
AL		 2217static int net_socket_mcast_init(VLANState *vlan,
2218 const char *model,
2219 const char *name,
bf38c1a0 2220 const char *host_str)
63a01ef8
AL		 2221{
2222 NetSocketState *s;
2223 int fd;
2224 struct sockaddr_in saddr;
2225
2226 if (parse_host_port(&saddr, host_str) < 0)
2227 return -1;
2228
2229
2230 fd = net_socket_mcast_create(&saddr);
2231 if (fd < 0)
2232 return -1;
2233
7a9f6e4a 2234 s = net_socket_fd_init(vlan, model, name, fd, 0);
63a01ef8
AL		 2235 if (!s)
2236 return -1;
2237
2238 s->dgram_dst = saddr;
2239
2240 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2241 "socket: mcast=%s:%d",
2242 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2243 return 0;
2244
2245}
2246
bb9ea79e
AL		 2247typedef struct DumpState {
2248 VLANClientState *pcap_vc;
2249 int fd;
2250 int pcap_caplen;
2251} DumpState;
2252
2253#define PCAP_MAGIC 0xa1b2c3d4
2254
2255struct pcap_file_hdr {
2256 uint32_t magic;
2257 uint16_t version_major;
2258 uint16_t version_minor;
2259 int32_t thiszone;
2260 uint32_t sigfigs;
2261 uint32_t snaplen;
2262 uint32_t linktype;
2263};
2264
2265struct pcap_sf_pkthdr {
2266 struct {
2267 int32_t tv_sec;
2268 int32_t tv_usec;
2269 } ts;
2270 uint32_t caplen;
2271 uint32_t len;
2272};
2273
4f1c942b 2274static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
bb9ea79e 2275{
e3f5ec2b 2276 DumpState *s = vc->opaque;
bb9ea79e
AL		 2277 struct pcap_sf_pkthdr hdr;
2278 int64_t ts;
2279 int caplen;
2280
2281 /* Early return in case of previous error. */
2282 if (s->fd < 0) {
4f1c942b 2283 return size;
bb9ea79e
AL		 2284 }
2285
37cb6fc3 2286 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
bb9ea79e
AL		 2287 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2288
37cb6fc3 2289 hdr.ts.tv_sec = ts / 1000000;
bb9ea79e
AL		 2290 hdr.ts.tv_usec = ts % 1000000;
2291 hdr.caplen = caplen;
2292 hdr.len = size;
2293 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2294 write(s->fd, buf, caplen) != caplen) {
2295 qemu_log("-net dump write error - stop dump\n");
2296 close(s->fd);
2297 s->fd = -1;
2298 }
4f1c942b
MM		 2299
2300 return size;
bb9ea79e
AL		 2301}
2302
2303static void net_dump_cleanup(VLANClientState *vc)
2304{
2305 DumpState *s = vc->opaque;
2306
2307 close(s->fd);
2308 qemu_free(s);
2309}
2310
10ae5a7a 2311static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
bb9ea79e
AL		 2312 const char *name, const char *filename, int len)
2313{
2314 struct pcap_file_hdr hdr;
2315 DumpState *s;
2316
2317 s = qemu_malloc(sizeof(DumpState));
2318
024431b3 2319 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
bb9ea79e 2320 if (s->fd < 0) {
10ae5a7a 2321 config_error(mon, "-net dump: can't open %s\n", filename);
bb9ea79e
AL		 2322 return -1;
2323 }
2324
2325 s->pcap_caplen = len;
2326
2327 hdr.magic = PCAP_MAGIC;
2328 hdr.version_major = 2;
2329 hdr.version_minor = 4;
2330 hdr.thiszone = 0;
2331 hdr.sigfigs = 0;
2332 hdr.snaplen = s->pcap_caplen;
2333 hdr.linktype = 1;
2334
2335 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
10ae5a7a 2336 config_error(mon, "-net dump write error: %s\n", strerror(errno));
bb9ea79e
AL		 2337 close(s->fd);
2338 qemu_free(s);
2339 return -1;
2340 }
2341
463af534 2342 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
bb9ea79e
AL		 2343 net_dump_cleanup, s);
2344 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2345 "dump to %s (len=%d)", filename, len);
2346 return 0;
2347}
2348
63a01ef8 2349/* find or alloc a new VLAN */
1a609520 2350VLANState *qemu_find_vlan(int id, int allocate)
63a01ef8
AL		 2351{
2352 VLANState **pvlan, *vlan;
2353 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2354 if (vlan->id == id)
2355 return vlan;
2356 }
1a609520
JK		 2357 if (!allocate) {
2358 return NULL;
2359 }
63a01ef8 2360 vlan = qemu_mallocz(sizeof(VLANState));
63a01ef8
AL		 2361 vlan->id = id;
2362 vlan->next = NULL;
2363 pvlan = &first_vlan;
2364 while (*pvlan != NULL)
2365 pvlan = &(*pvlan)->next;
2366 *pvlan = vlan;
2367 return vlan;
2368}
2369
7697079b
AL		 2370static int nic_get_free_idx(void)
2371{
2372 int index;
2373
2374 for (index = 0; index < MAX_NICS; index++)
2375 if (!nd_table[index].used)
2376 return index;
2377 return -1;
2378}
2379
d07f22c5
AL		 2380void qemu_check_nic_model(NICInfo *nd, const char *model)
2381{
2382 const char *models[2];
2383
2384 models[0] = model;
2385 models[1] = NULL;
2386
2387 qemu_check_nic_model_list(nd, models, model);
2388}
2389
2390void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2391 const char *default_model)
2392{
2393 int i, exit_status = 0;
2394
2395 if (!nd->model)
2396 nd->model = strdup(default_model);
2397
2398 if (strcmp(nd->model, "?") != 0) {
2399 for (i = 0 ; models[i]; i++)
2400 if (strcmp(nd->model, models[i]) == 0)
2401 return;
2402
2403 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2404 exit_status = 1;
2405 }
2406
2407 fprintf(stderr, "qemu: Supported NIC models: ");
2408 for (i = 0 ; models[i]; i++)
2409 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2410
2411 exit(exit_status);
2412}
2413
413fb241
MM		 2414static int net_handle_fd_param(Monitor *mon, const char *param)
2415{
2416 if (!qemu_isdigit(param[0])) {
2417 int fd;
2418
2419 fd = monitor_get_fd(mon, param);
2420 if (fd == -1) {
2421 config_error(mon, "No file descriptor named %s found", param);
2422 return -1;
2423 }
2424
2425 return fd;
2426 } else {
2427 return strtol(param, NULL, 0);
2428 }
2429}
2430
10ae5a7a 2431int net_client_init(Monitor *mon, const char *device, const char *p)
63a01ef8
AL		 2432{
2433 char buf[1024];
2434 int vlan_id, ret;
2435 VLANState *vlan;
7a9f6e4a 2436 char *name = NULL;
63a01ef8
AL		 2437
2438 vlan_id = 0;
2439 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2440 vlan_id = strtol(buf, NULL, 0);
2441 }
1a609520 2442 vlan = qemu_find_vlan(vlan_id, 1);
9036de1a 2443
7a9f6e4a 2444 if (get_param_value(buf, sizeof(buf), "name", p)) {
10ae5a7a 2445 name = qemu_strdup(buf);
7a9f6e4a 2446 }
63a01ef8 2447 if (!strcmp(device, "nic")) {
8e4416af 2448 static const char * const nic_params[] = {
eb54b6dc 2449 "vlan", "name", "macaddr", "model", "addr", "id", "vectors", NULL
8e4416af 2450 };
63a01ef8
AL		 2451 NICInfo *nd;
2452 uint8_t *macaddr;
7697079b 2453 int idx = nic_get_free_idx();
63a01ef8 2454
0aa7a205 2455 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
10ae5a7a
JK		 2456 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2457 ret = -1;
2458 goto out;
8e4416af 2459 }
7697079b 2460 if (idx == -1 || nb_nics >= MAX_NICS) {
10ae5a7a 2461 config_error(mon, "Too Many NICs\n");
771f1339
AL		 2462 ret = -1;
2463 goto out;
63a01ef8 2464 }
7697079b 2465 nd = &nd_table[idx];
63a01ef8
AL		 2466 macaddr = nd->macaddr;
2467 macaddr[0] = 0x52;
2468 macaddr[1] = 0x54;
2469 macaddr[2] = 0x00;
2470 macaddr[3] = 0x12;
2471 macaddr[4] = 0x34;
7697079b 2472 macaddr[5] = 0x56 + idx;
63a01ef8
AL		 2473
2474 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2475 if (parse_macaddr(macaddr, buf) < 0) {
10ae5a7a 2476 config_error(mon, "invalid syntax for ethernet address\n");
771f1339
AL		 2477 ret = -1;
2478 goto out;
63a01ef8
AL		 2479 }
2480 }
2481 if (get_param_value(buf, sizeof(buf), "model", p)) {
2482 nd->model = strdup(buf);
2483 }
5607c388
MA		 2484 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2485 nd->devaddr = strdup(buf);
2486 }
eb54b6dc
GH		 2487 if (get_param_value(buf, sizeof(buf), "id", p)) {
2488 nd->id = strdup(buf);
2489 }
ffe6370c
MT		 2490 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2491 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2492 char *endptr;
2493 long vectors = strtol(buf, &endptr, 0);
2494 if (*endptr) {
2495 config_error(mon, "invalid syntax for # of vectors\n");
2496 ret = -1;
2497 goto out;
2498 }
2499 if (vectors < 0 || vectors > 0x7ffffff) {
2500 config_error(mon, "invalid # of vectors\n");
2501 ret = -1;
2502 goto out;
2503 }
2504 nd->nvectors = vectors;
2505 }
63a01ef8 2506 nd->vlan = vlan;
7a9f6e4a 2507 nd->name = name;
7697079b 2508 nd->used = 1;
7a9f6e4a 2509 name = NULL;
63a01ef8
AL		 2510 nb_nics++;
2511 vlan->nb_guest_devs++;
4d73cd3b 2512 ret = idx;
63a01ef8
AL		 2513 } else
2514 if (!strcmp(device, "none")) {
8e4416af 2515 if (*p != '\0') {
10ae5a7a
JK		 2516 config_error(mon, "'none' takes no parameters\n");
2517 ret = -1;
2518 goto out;
8e4416af 2519 }
63a01ef8
AL		 2520 /* does nothing. It is needed to signal that no network cards
2521 are wanted */
2522 ret = 0;
2523 } else
2524#ifdef CONFIG_SLIRP
2525 if (!strcmp(device, "user")) {
8e4416af 2526 static const char * const slirp_params[] = {
c92ef6a2
JK		 2527 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2528 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2529 "hostfwd", "guestfwd", NULL
8e4416af 2530 };
ad196a9d 2531 struct slirp_config_str *config;
c92ef6a2
JK		 2532 int restricted = 0;
2533 char *vnet = NULL;
2534 char *vhost = NULL;
2535 char *vhostname = NULL;
ad196a9d
JK		 2536 char *tftp_export = NULL;
2537 char *bootfile = NULL;
c92ef6a2
JK		 2538 char *vdhcp_start = NULL;
2539 char *vnamesrv = NULL;
ad196a9d 2540 char *smb_export = NULL;
c92ef6a2 2541 char *vsmbsrv = NULL;
ad196a9d 2542 const char *q;
b8e8af38 2543
0aa7a205 2544 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
10ae5a7a
JK		 2545 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2546 ret = -1;
2547 goto out;
8e4416af 2548 }
c92ef6a2 2549 if (get_param_value(buf, sizeof(buf), "ip", p)) {
3da6abd4 2550 int vnet_buflen = strlen(buf) + strlen("/24") + 1;
c92ef6a2 2551 /* emulate legacy parameter */
3da6abd4
BS		 2552 vnet = qemu_malloc(vnet_buflen);
2553 pstrcpy(vnet, vnet_buflen, buf);
2554 pstrcat(vnet, vnet_buflen, "/24");
c92ef6a2
JK		 2555 }
2556 if (get_param_value(buf, sizeof(buf), "net", p)) {
2557 vnet = qemu_strdup(buf);
2558 }
2559 if (get_param_value(buf, sizeof(buf), "host", p)) {
2560 vhost = qemu_strdup(buf);
2561 }
63a01ef8 2562 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
c92ef6a2 2563 vhostname = qemu_strdup(buf);
63a01ef8 2564 }
49ec9b40 2565 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
b8e8af38 2566 restricted = (buf[0] == 'y') ? 1 : 0;
49ec9b40 2567 }
c92ef6a2
JK		 2568 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2569 vdhcp_start = qemu_strdup(buf);
2570 }
2571 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2572 vnamesrv = qemu_strdup(buf);
49ec9b40 2573 }
ad196a9d
JK		 2574 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2575 tftp_export = qemu_strdup(buf);
2576 }
2577 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2578 bootfile = qemu_strdup(buf);
2579 }
2580 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2581 smb_export = qemu_strdup(buf);
c92ef6a2
JK		 2582 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2583 vsmbsrv = qemu_strdup(buf);
2584 }
ad196a9d
JK		 2585 }
2586 q = p;
2587 while (1) {
2588 config = qemu_malloc(sizeof(*config));
2589 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2590 "hostfwd", &q)) {
ad196a9d
JK		 2591 break;
2592 }
c92ef6a2 2593 config->flags = SLIRP_CFG_HOSTFWD;
ad196a9d
JK		 2594 config->next = slirp_configs;
2595 slirp_configs = config;
2596 config = NULL;
2597 }
2598 q = p;
2599 while (1) {
2600 config = qemu_malloc(sizeof(*config));
2601 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2602 "guestfwd", &q)) {
ad196a9d
JK		 2603 break;
2604 }
2605 config->flags = 0;
2606 config->next = slirp_configs;
2607 slirp_configs = config;
2608 config = NULL;
2609 }
2610 qemu_free(config);
63a01ef8 2611 vlan->nb_host_devs++;
c92ef6a2
JK		 2612 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2613 vhostname, tftp_export, bootfile, vdhcp_start,
2614 vnamesrv, smb_export, vsmbsrv);
2615 qemu_free(vnet);
2616 qemu_free(vhost);
2617 qemu_free(vhostname);
ad196a9d
JK		 2618 qemu_free(tftp_export);
2619 qemu_free(bootfile);
c92ef6a2
JK		 2620 qemu_free(vdhcp_start);
2621 qemu_free(vnamesrv);
ad196a9d 2622 qemu_free(smb_export);
c92ef6a2 2623 qemu_free(vsmbsrv);
8ca9217d 2624 } else if (!strcmp(device, "channel")) {
b1c99fcd 2625 if (TAILQ_EMPTY(&slirp_stacks)) {
ad196a9d
JK		 2626 struct slirp_config_str *config;
2627
2628 config = qemu_malloc(sizeof(*config));
2629 pstrcpy(config->str, sizeof(config->str), p);
c92ef6a2 2630 config->flags = SLIRP_CFG_LEGACY;
ad196a9d
JK		 2631 config->next = slirp_configs;
2632 slirp_configs = config;
2633 } else {
b1c99fcd 2634 slirp_guestfwd(TAILQ_FIRST(&slirp_stacks), mon, p, 1);
8ca9217d 2635 }
8ca9217d 2636 ret = 0;
63a01ef8
AL		 2637 } else
2638#endif
2639#ifdef _WIN32
2640 if (!strcmp(device, "tap")) {
8e4416af
AL		 2641 static const char * const tap_params[] = {
2642 "vlan", "name", "ifname", NULL
2643 };
63a01ef8 2644 char ifname[64];
8e4416af 2645
0aa7a205 2646 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
10ae5a7a
JK		 2647 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2648 ret = -1;
2649 goto out;
8e4416af 2650 }
63a01ef8 2651 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
10ae5a7a 2652 config_error(mon, "tap: no interface name\n");
771f1339
AL		 2653 ret = -1;
2654 goto out;
63a01ef8
AL		 2655 }
2656 vlan->nb_host_devs++;
7a9f6e4a 2657 ret = tap_win32_init(vlan, device, name, ifname);
63a01ef8 2658 } else
b29fe3ed 2659#elif defined (_AIX)
63a01ef8
AL		 2660#else
2661 if (!strcmp(device, "tap")) {
0aa7a205 2662 char ifname[64], chkbuf[64];
63a01ef8 2663 char setup_script[1024], down_script[1024];
4a77b25e 2664 TAPState *s;
63a01ef8
AL		 2665 int fd;
2666 vlan->nb_host_devs++;
2667 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2668 static const char * const fd_params[] = {
2669 "vlan", "name", "fd", "sndbuf", NULL
2670 };
413fb241 2671 ret = -1;
0aa7a205 2672 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a 2673 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
10ae5a7a 2674 goto out;
8e4416af 2675 }
413fb241
MM		 2676 fd = net_handle_fd_param(mon, buf);
2677 if (fd == -1) {
2678 goto out;
2679 }
63a01ef8 2680 fcntl(fd, F_SETFL, O_NONBLOCK);
4a77b25e 2681 s = net_tap_fd_init(vlan, device, name, fd);
413fb241
MM		 2682 if (!s) {
2683 close(fd);
2684 }
63a01ef8 2685 } else {
8e4416af 2686 static const char * const tap_params[] = {
0df0ff6d 2687 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
8e4416af 2688 };
0aa7a205 2689 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
10ae5a7a
JK		 2690 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2691 ret = -1;
2692 goto out;
8e4416af 2693 }
63a01ef8
AL		 2694 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2695 ifname[0] = '\0';
2696 }
2697 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2698 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2699 }
2700 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2701 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2702 }
4a77b25e
MM		 2703 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2704 }
2705 if (s != NULL) {
fc5b81d1 2706 const char *sndbuf_str = NULL;
0df0ff6d 2707 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
fc5b81d1 2708 sndbuf_str = buf;
0df0ff6d 2709 }
fc5b81d1 2710 tap_set_sndbuf(s, sndbuf_str, mon);
4a77b25e
MM		 2711 ret = 0;
2712 } else {
2713 ret = -1;
63a01ef8
AL		 2714 }
2715 } else
2716#endif
2717 if (!strcmp(device, "socket")) {
0aa7a205 2718 char chkbuf[64];
63a01ef8 2719 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2720 static const char * const fd_params[] = {
2721 "vlan", "name", "fd", NULL
2722 };
63a01ef8 2723 int fd;
413fb241 2724 ret = -1;
0aa7a205 2725 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a 2726 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
10ae5a7a 2727 goto out;
8e4416af 2728 }
413fb241
MM		 2729 fd = net_handle_fd_param(mon, buf);
2730 if (fd == -1) {
2731 goto out;
2732 }
2733 if (!net_socket_fd_init(vlan, device, name, fd, 1)) {
2734 close(fd);
2735 goto out;
2736 }
2737 ret = 0;
63a01ef8 2738 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
8e4416af
AL		 2739 static const char * const listen_params[] = {
2740 "vlan", "name", "listen", NULL
2741 };
0aa7a205 2742 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
10ae5a7a
JK		 2743 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2744 ret = -1;
2745 goto out;
8e4416af 2746 }
7a9f6e4a 2747 ret = net_socket_listen_init(vlan, device, name, buf);
63a01ef8 2748 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
8e4416af
AL		 2749 static const char * const connect_params[] = {
2750 "vlan", "name", "connect", NULL
2751 };
0aa7a205 2752 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
10ae5a7a
JK		 2753 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2754 ret = -1;
2755 goto out;
8e4416af 2756 }
7a9f6e4a 2757 ret = net_socket_connect_init(vlan, device, name, buf);
63a01ef8 2758 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
8e4416af
AL		 2759 static const char * const mcast_params[] = {
2760 "vlan", "name", "mcast", NULL
2761 };
0aa7a205 2762 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
10ae5a7a
JK		 2763 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2764 ret = -1;
2765 goto out;
8e4416af 2766 }
7a9f6e4a 2767 ret = net_socket_mcast_init(vlan, device, name, buf);
63a01ef8 2768 } else {
10ae5a7a 2769 config_error(mon, "Unknown socket options: %s\n", p);
771f1339
AL		 2770 ret = -1;
2771 goto out;
63a01ef8
AL		 2772 }
2773 vlan->nb_host_devs++;
2774 } else
2775#ifdef CONFIG_VDE
2776 if (!strcmp(device, "vde")) {
8e4416af
AL		 2777 static const char * const vde_params[] = {
2778 "vlan", "name", "sock", "port", "group", "mode", NULL
2779 };
63a01ef8
AL		 2780 char vde_sock[1024], vde_group[512];
2781 int vde_port, vde_mode;
8e4416af 2782
0aa7a205 2783 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
10ae5a7a
JK		 2784 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2785 ret = -1;
2786 goto out;
8e4416af 2787 }
63a01ef8
AL		 2788 vlan->nb_host_devs++;
2789 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2790 vde_sock[0] = '\0';
2791 }
2792 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2793 vde_port = strtol(buf, NULL, 10);
2794 } else {
2795 vde_port = 0;
2796 }
2797 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2798 vde_group[0] = '\0';
2799 }
2800 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2801 vde_mode = strtol(buf, NULL, 8);
2802 } else {
2803 vde_mode = 0700;
2804 }
7a9f6e4a 2805 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
63a01ef8
AL		 2806 } else
2807#endif
bb9ea79e
AL		 2808 if (!strcmp(device, "dump")) {
2809 int len = 65536;
2810
2811 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2812 len = strtol(buf, NULL, 0);
2813 }
2814 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2815 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2816 }
10ae5a7a 2817 ret = net_dump_init(mon, vlan, device, name, buf, len);
bb9ea79e 2818 } else {
10ae5a7a 2819 config_error(mon, "Unknown network device: %s\n", device);
771f1339
AL		 2820 ret = -1;
2821 goto out;
63a01ef8
AL		 2822 }
2823 if (ret < 0) {
10ae5a7a 2824 config_error(mon, "Could not initialize device '%s'\n", device);
63a01ef8 2825 }
771f1339 2826out:
10ae5a7a 2827 qemu_free(name);
63a01ef8
AL		 2828 return ret;
2829}
2830
8b13c4a7
AL		 2831void net_client_uninit(NICInfo *nd)
2832{
2833 nd->vlan->nb_guest_devs--;
2834 nb_nics--;
2835 nd->used = 0;
2836 free((void *)nd->model);
2837}
2838
6f338c34
AL		 2839static int net_host_check_device(const char *device)
2840{
2841 int i;
bb9ea79e 2842 const char *valid_param_list[] = { "tap", "socket", "dump"
6f338c34
AL		 2843#ifdef CONFIG_SLIRP
2844 ,"user"
2845#endif
2846#ifdef CONFIG_VDE
2847 ,"vde"
2848#endif
2849 };
2850 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2851 if (!strncmp(valid_param_list[i], device,
2852 strlen(valid_param_list[i])))
2853 return 1;
2854 }
2855
2856 return 0;
2857}
2858
376253ec 2859void net_host_device_add(Monitor *mon, const char *device, const char *opts)
6f338c34
AL		 2860{
2861 if (!net_host_check_device(device)) {
376253ec 2862 monitor_printf(mon, "invalid host network device %s\n", device);
6f338c34
AL		 2863 return;
2864 }
10ae5a7a 2865 if (net_client_init(mon, device, opts ? opts : "") < 0) {
5c8be678
AL		 2866 monitor_printf(mon, "adding host network device %s failed\n", device);
2867 }
6f338c34
AL		 2868}
2869
376253ec 2870void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
6f338c34 2871{
6f338c34
AL		 2872 VLANClientState *vc;
2873
1a609520 2874 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
6f338c34 2875 if (!vc) {
6f338c34
AL		 2876 return;
2877 }
e8f1f9db
AL		 2878 if (!net_host_check_device(vc->model)) {
2879 monitor_printf(mon, "invalid host network device %s\n", device);
2880 return;
2881 }
6f338c34
AL		 2882 qemu_del_vlan_client(vc);
2883}
2884
63a01ef8
AL		 2885int net_client_parse(const char *str)
2886{
2887 const char *p;
2888 char *q;
2889 char device[64];
2890
2891 p = str;
2892 q = device;
2893 while (*p != '\0' && *p != ',') {
2894 if ((q - device) < sizeof(device) - 1)
2895 *q++ = *p;
2896 p++;
2897 }
2898 *q = '\0';
2899 if (*p == ',')
2900 p++;
2901
10ae5a7a 2902 return net_client_init(NULL, device, p);
63a01ef8
AL		 2903}
2904
406c8df3
GC		 2905void net_set_boot_mask(int net_boot_mask)
2906{
2907 int i;
2908
2909 /* Only the first four NICs may be bootable */
2910 net_boot_mask = net_boot_mask & 0xF;
2911
2912 for (i = 0; i < nb_nics; i++) {
2913 if (net_boot_mask & (1 << i)) {
2914 nd_table[i].bootable = 1;
2915 net_boot_mask &= ~(1 << i);
2916 }
2917 }
2918
2919 if (net_boot_mask) {
2920 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2921 exit(1);
2922 }
2923}
2924
376253ec 2925void do_info_network(Monitor *mon)
63a01ef8
AL		 2926{
2927 VLANState *vlan;
2928 VLANClientState *vc;
2929
2930 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
376253ec 2931 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
63a01ef8 2932 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
376253ec 2933 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
63a01ef8
AL		 2934 }
2935}
2936
376253ec 2937int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
436e5e53
AL		 2938{
2939 VLANState *vlan;
2940 VLANClientState *vc = NULL;
2941
2942 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2943 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2944 if (strcmp(vc->name, name) == 0)
dd5de373
EI		 2945 goto done;
2946done:
436e5e53
AL		 2947
2948 if (!vc) {
376253ec 2949 monitor_printf(mon, "could not find network device '%s'", name);
436e5e53
AL		 2950 return 0;
2951 }
2952
2953 if (strcmp(up_or_down, "up") == 0)
2954 vc->link_down = 0;
2955 else if (strcmp(up_or_down, "down") == 0)
2956 vc->link_down = 1;
2957 else
376253ec
AL		 2958 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2959 "valid\n", up_or_down);
436e5e53 2960
34b25ca7
AL		 2961 if (vc->link_status_changed)
2962 vc->link_status_changed(vc);
2963
436e5e53
AL		 2964 return 1;
2965}
2966
63a01ef8
AL		 2967void net_cleanup(void)
2968{
2969 VLANState *vlan;
2970
63a01ef8
AL		 2971 /* close network clients */
2972 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
b946a153 2973 VLANClientState *vc = vlan->first_client;
63a01ef8 2974
b946a153
AL		 2975 while (vc) {
2976 VLANClientState *next = vc->next;
63a01ef8 2977
b946a153
AL		 2978 qemu_del_vlan_client(vc);
2979
2980 vc = next;
63a01ef8
AL		 2981 }
2982 }
63a01ef8
AL		 2983}
2984
2985void net_client_check(void)
2986{
2987 VLANState *vlan;
2988
2989 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2990 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2991 continue;
2992 if (vlan->nb_guest_devs == 0)
2993 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2994 if (vlan->nb_host_devs == 0)
2995 fprintf(stderr,
2996 "Warning: vlan %d is not connected to host network\n",
2997 vlan->id);
2998 }
2999}
Qemu copy for testing