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slirp: Explicitely mark host-forwarding sockets
[qemu.git] / net.c
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63a01ef8
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
63a01ef8
AL		 24#include <unistd.h>
25#include <fcntl.h>
26#include <signal.h>
27#include <time.h>
28#include <errno.h>
29#include <sys/time.h>
30#include <zlib.h>
31
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
BS		 122
123#if defined(CONFIG_SLIRP)
124#include "libslirp.h"
125#endif
126
127
63a01ef8
AL		 128static VLANState *first_vlan;
129
130/***********************************************************/
131/* network device redirectors */
132
133#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
134static void hex_dump(FILE *f, const uint8_t *buf, int size)
135{
136 int len, i, j, c;
137
138 for(i=0;i<size;i+=16) {
139 len = size - i;
140 if (len > 16)
141 len = 16;
142 fprintf(f, "%08x ", i);
143 for(j=0;j<16;j++) {
144 if (j < len)
145 fprintf(f, " %02x", buf[i+j]);
146 else
147 fprintf(f, " ");
148 }
149 fprintf(f, " ");
150 for(j=0;j<len;j++) {
151 c = buf[i+j];
152 if (c < ' ' || c > '~')
153 c = '.';
154 fprintf(f, "%c", c);
155 }
156 fprintf(f, "\n");
157 }
158}
159#endif
160
161static int parse_macaddr(uint8_t *macaddr, const char *p)
162{
163 int i;
164 char *last_char;
165 long int offset;
166
167 errno = 0;
168 offset = strtol(p, &last_char, 0);
169 if (0 == errno && '\0' == *last_char &&
170 offset >= 0 && offset <= 0xFFFFFF) {
171 macaddr[3] = (offset & 0xFF0000) >> 16;
172 macaddr[4] = (offset & 0xFF00) >> 8;
173 macaddr[5] = offset & 0xFF;
174 return 0;
175 } else {
176 for(i = 0; i < 6; i++) {
177 macaddr[i] = strtol(p, (char **)&p, 16);
178 if (i == 5) {
179 if (*p != '\0')
180 return -1;
181 } else {
182 if (*p != ':' && *p != '-')
183 return -1;
184 p++;
185 }
186 }
187 return 0;
188 }
189
190 return -1;
191}
192
193static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
194{
195 const char *p, *p1;
196 int len;
197 p = *pp;
198 p1 = strchr(p, sep);
199 if (!p1)
200 return -1;
201 len = p1 - p;
202 p1++;
203 if (buf_size > 0) {
204 if (len > buf_size - 1)
205 len = buf_size - 1;
206 memcpy(buf, p, len);
207 buf[len] = '\0';
208 }
209 *pp = p1;
210 return 0;
211}
212
213int parse_host_src_port(struct sockaddr_in *haddr,
214 struct sockaddr_in *saddr,
215 const char *input_str)
216{
217 char *str = strdup(input_str);
218 char *host_str = str;
219 char *src_str;
220 const char *src_str2;
221 char *ptr;
222
223 /*
224 * Chop off any extra arguments at the end of the string which
225 * would start with a comma, then fill in the src port information
226 * if it was provided else use the "any address" and "any port".
227 */
228 if ((ptr = strchr(str,',')))
229 *ptr = '\0';
230
231 if ((src_str = strchr(input_str,'@'))) {
232 *src_str = '\0';
233 src_str++;
234 }
235
236 if (parse_host_port(haddr, host_str) < 0)
237 goto fail;
238
239 src_str2 = src_str;
240 if (!src_str || *src_str == '\0')
241 src_str2 = ":0";
242
243 if (parse_host_port(saddr, src_str2) < 0)
244 goto fail;
245
246 free(str);
247 return(0);
248
249fail:
250 free(str);
251 return -1;
252}
253
254int parse_host_port(struct sockaddr_in *saddr, const char *str)
255{
256 char buf[512];
257 struct hostent *he;
258 const char *p, *r;
259 int port;
260
261 p = str;
262 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
263 return -1;
264 saddr->sin_family = AF_INET;
265 if (buf[0] == '\0') {
266 saddr->sin_addr.s_addr = 0;
267 } else {
cd390083 268 if (qemu_isdigit(buf[0])) {
63a01ef8
AL		 269 if (!inet_aton(buf, &saddr->sin_addr))
270 return -1;
271 } else {
272 if ((he = gethostbyname(buf)) == NULL)
273 return - 1;
274 saddr->sin_addr = *(struct in_addr *)he->h_addr;
275 }
276 }
277 port = strtol(p, (char **)&r, 0);
278 if (r == p)
279 return -1;
280 saddr->sin_port = htons(port);
281 return 0;
282}
283
69d6451c
BS		 284#if !defined(_WIN32) && 0
285static int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
63a01ef8
AL		 286{
287 const char *p;
288 int len;
289
290 len = MIN(108, strlen(str));
291 p = strchr(str, ',');
292 if (p)
293 len = MIN(len, p - str);
294
295 memset(uaddr, 0, sizeof(*uaddr));
296
297 uaddr->sun_family = AF_UNIX;
298 memcpy(uaddr->sun_path, str, len);
299
300 return 0;
301}
302#endif
303
7cb7434b
AL		 304void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
305{
306 snprintf(vc->info_str, sizeof(vc->info_str),
4dda4063
AL		 307 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
308 vc->model,
7cb7434b
AL		 309 macaddr[0], macaddr[1], macaddr[2],
310 macaddr[3], macaddr[4], macaddr[5]);
311}
312
676cff29
AL		 313static char *assign_name(VLANClientState *vc1, const char *model)
314{
315 VLANState *vlan;
316 char buf[256];
317 int id = 0;
318
319 for (vlan = first_vlan; vlan; vlan = vlan->next) {
320 VLANClientState *vc;
321
322 for (vc = vlan->first_client; vc; vc = vc->next)
323 if (vc != vc1 && strcmp(vc->model, model) == 0)
324 id++;
325 }
326
327 snprintf(buf, sizeof(buf), "%s.%d", model, id);
328
329 return strdup(buf);
330}
331
63a01ef8 332VLANClientState *qemu_new_vlan_client(VLANState *vlan,
bf38c1a0 333 const char *model,
7a9f6e4a 334 const char *name,
cda9046b
MM		 335 NetCanReceive *can_receive,
336 NetReceive *receive,
337 NetReceiveIOV *receive_iov,
b946a153 338 NetCleanup *cleanup,
63a01ef8
AL		 339 void *opaque)
340{
341 VLANClientState *vc, **pvc;
342 vc = qemu_mallocz(sizeof(VLANClientState));
bf38c1a0 343 vc->model = strdup(model);
7a9f6e4a
AL		 344 if (name)
345 vc->name = strdup(name);
346 else
347 vc->name = assign_name(vc, model);
cda9046b
MM		 348 vc->can_receive = can_receive;
349 vc->receive = receive;
350 vc->receive_iov = receive_iov;
b946a153 351 vc->cleanup = cleanup;
63a01ef8
AL		 352 vc->opaque = opaque;
353 vc->vlan = vlan;
354
355 vc->next = NULL;
356 pvc = &vlan->first_client;
357 while (*pvc != NULL)
358 pvc = &(*pvc)->next;
359 *pvc = vc;
360 return vc;
361}
362
363void qemu_del_vlan_client(VLANClientState *vc)
364{
365 VLANClientState **pvc = &vc->vlan->first_client;
366
367 while (*pvc != NULL)
368 if (*pvc == vc) {
369 *pvc = vc->next;
b946a153
AL		 370 if (vc->cleanup) {
371 vc->cleanup(vc);
372 }
676cff29 373 free(vc->name);
bf38c1a0 374 free(vc->model);
dad35419 375 qemu_free(vc);
63a01ef8
AL		 376 break;
377 } else
378 pvc = &(*pvc)->next;
379}
380
8b13c4a7
AL		 381VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
382{
383 VLANClientState **pvc = &vlan->first_client;
384
385 while (*pvc != NULL)
386 if ((*pvc)->opaque == opaque)
387 return *pvc;
388 else
389 pvc = &(*pvc)->next;
390
391 return NULL;
392}
393
2e1e0641 394int qemu_can_send_packet(VLANClientState *sender)
63a01ef8 395{
2e1e0641 396 VLANState *vlan = sender->vlan;
63a01ef8
AL		 397 VLANClientState *vc;
398
2e1e0641
MM		 399 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
400 if (vc == sender) {
401 continue;
402 }
403
cda9046b 404 /* no can_receive() handler, they can always receive */
e3f5ec2b 405 if (!vc->can_receive || vc->can_receive(vc)) {
2e1e0641 406 return 1;
63a01ef8
AL		 407 }
408 }
409 return 0;
410}
411
3e021d40 412static int
764a4d1d 413qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
63a01ef8 414{
63a01ef8 415 VLANClientState *vc;
3e021d40 416 int ret = -1;
63a01ef8 417
e94667b9
MM		 418 sender->vlan->delivering = 1;
419
764a4d1d 420 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
3e021d40
MM		 421 ssize_t len;
422
423 if (vc == sender) {
424 continue;
764a4d1d 425 }
3e021d40
MM		 426
427 if (vc->link_down) {
428 ret = size;
429 continue;
430 }
431
432 len = vc->receive(vc, buf, size);
433
434 ret = (ret >= 0) ? ret : len;
764a4d1d 435 }
3e021d40 436
e94667b9
MM		 437 sender->vlan->delivering = 0;
438
3e021d40 439 return ret;
764a4d1d
AL		 440}
441
8cad5516
MM		 442void qemu_purge_queued_packets(VLANClientState *vc)
443{
444 VLANPacket **pp = &vc->vlan->send_queue;
445
446 while (*pp != NULL) {
447 VLANPacket *packet = *pp;
448
449 if (packet->sender == vc) {
450 *pp = packet->next;
451 qemu_free(packet);
452 } else {
453 pp = &packet->next;
454 }
455 }
456}
457
f3b6c7fc 458void qemu_flush_queued_packets(VLANClientState *vc)
e94667b9
MM		 459{
460 VLANPacket *packet;
461
462 while ((packet = vc->vlan->send_queue) != NULL) {
f3b6c7fc
MM		 463 int ret;
464
e94667b9 465 vc->vlan->send_queue = packet->next;
f3b6c7fc
MM		 466
467 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
468 if (ret == 0 && packet->sent_cb != NULL) {
469 packet->next = vc->vlan->send_queue;
470 vc->vlan->send_queue = packet;
471 break;
472 }
473
474 if (packet->sent_cb)
783527a9 475 packet->sent_cb(packet->sender, ret);
f3b6c7fc 476
e94667b9
MM		 477 qemu_free(packet);
478 }
479}
480
f3b6c7fc
MM		 481static void qemu_enqueue_packet(VLANClientState *sender,
482 const uint8_t *buf, int size,
483 NetPacketSent *sent_cb)
e94667b9
MM		 484{
485 VLANPacket *packet;
486
487 packet = qemu_malloc(sizeof(VLANPacket) + size);
488 packet->next = sender->vlan->send_queue;
489 packet->sender = sender;
490 packet->size = size;
f3b6c7fc 491 packet->sent_cb = sent_cb;
e94667b9
MM		 492 memcpy(packet->data, buf, size);
493 sender->vlan->send_queue = packet;
494}
495
f3b6c7fc
MM		 496ssize_t qemu_send_packet_async(VLANClientState *sender,
497 const uint8_t *buf, int size,
498 NetPacketSent *sent_cb)
764a4d1d 499{
f3b6c7fc 500 int ret;
764a4d1d 501
f3b6c7fc
MM		 502 if (sender->link_down) {
503 return size;
504 }
436e5e53 505
63a01ef8 506#ifdef DEBUG_NET
f3b6c7fc 507 printf("vlan %d send:\n", sender->vlan->id);
63a01ef8
AL		 508 hex_dump(stdout, buf, size);
509#endif
f3b6c7fc
MM		 510
511 if (sender->vlan->delivering) {
512 qemu_enqueue_packet(sender, buf, size, NULL);
513 return size;
514 }
515
516 ret = qemu_deliver_packet(sender, buf, size);
517 if (ret == 0 && sent_cb != NULL) {
518 qemu_enqueue_packet(sender, buf, size, sent_cb);
519 return 0;
63a01ef8 520 }
e94667b9 521
f3b6c7fc
MM		 522 qemu_flush_queued_packets(sender);
523
524 return ret;
525}
526
527void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
528{
529 qemu_send_packet_async(vc, buf, size, NULL);
63a01ef8
AL		 530}
531
fbe78f4f
AL		 532static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
533 int iovcnt)
534{
535 uint8_t buffer[4096];
536 size_t offset = 0;
537 int i;
538
539 for (i = 0; i < iovcnt; i++) {
540 size_t len;
541
542 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
543 memcpy(buffer + offset, iov[i].iov_base, len);
544 offset += len;
545 }
546
f3b6c7fc 547 return vc->receive(vc, buffer, offset);
fbe78f4f
AL		 548}
549
e0e7877a
AL		 550static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
551{
552 size_t offset = 0;
553 int i;
554
555 for (i = 0; i < iovcnt; i++)
556 offset += iov[i].iov_len;
557 return offset;
558}
559
e94667b9
MM		 560static int qemu_deliver_packet_iov(VLANClientState *sender,
561 const struct iovec *iov, int iovcnt)
fbe78f4f 562{
fbe78f4f 563 VLANClientState *vc;
e94667b9
MM		 564 int ret = -1;
565
566 sender->vlan->delivering = 1;
567
568 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
569 ssize_t len;
570
571 if (vc == sender) {
572 continue;
573 }
574
575 if (vc->link_down) {
576 ret = calc_iov_length(iov, iovcnt);
577 continue;
578 }
579
580 if (vc->receive_iov) {
581 len = vc->receive_iov(vc, iov, iovcnt);
582 } else {
583 len = vc_sendv_compat(vc, iov, iovcnt);
584 }
585
586 ret = (ret >= 0) ? ret : len;
587 }
588
589 sender->vlan->delivering = 0;
590
591 return ret;
592}
593
594static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
f3b6c7fc
MM		 595 const struct iovec *iov, int iovcnt,
596 NetPacketSent *sent_cb)
e94667b9 597{
c27ff608 598 VLANPacket *packet;
e94667b9 599 size_t max_len = 0;
c27ff608 600 int i;
fbe78f4f 601
e94667b9 602 max_len = calc_iov_length(iov, iovcnt);
e0e7877a 603
e94667b9
MM		 604 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
605 packet->next = sender->vlan->send_queue;
606 packet->sender = sender;
f3b6c7fc 607 packet->sent_cb = sent_cb;
e94667b9 608 packet->size = 0;
c27ff608 609
e94667b9
MM		 610 for (i = 0; i < iovcnt; i++) {
611 size_t len = iov[i].iov_len;
c27ff608 612
e94667b9
MM		 613 memcpy(packet->data + packet->size, iov[i].iov_base, len);
614 packet->size += len;
615 }
fbe78f4f 616
e94667b9 617 sender->vlan->send_queue = packet;
fbe78f4f 618
e94667b9
MM		 619 return packet->size;
620}
fbe78f4f 621
f3b6c7fc
MM		 622ssize_t qemu_sendv_packet_async(VLANClientState *sender,
623 const struct iovec *iov, int iovcnt,
624 NetPacketSent *sent_cb)
e94667b9
MM		 625{
626 int ret;
627
628 if (sender->link_down) {
629 return calc_iov_length(iov, iovcnt);
630 }
631
632 if (sender->vlan->delivering) {
f3b6c7fc 633 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
fbe78f4f
AL		 634 }
635
e94667b9 636 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
f3b6c7fc
MM		 637 if (ret == 0 && sent_cb != NULL) {
638 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
639 return 0;
640 }
e94667b9
MM		 641
642 qemu_flush_queued_packets(sender);
643
644 return ret;
fbe78f4f
AL		 645}
646
f3b6c7fc
MM		 647ssize_t
648qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
649{
650 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
651}
652
10ae5a7a
JK		 653static void config_error(Monitor *mon, const char *fmt, ...)
654{
655 va_list ap;
656
657 va_start(ap, fmt);
658 if (mon) {
659 monitor_vprintf(mon, fmt, ap);
660 } else {
661 fprintf(stderr, "qemu: ");
662 vfprintf(stderr, fmt, ap);
663 exit(1);
664 }
665 va_end(ap);
666}
667
63a01ef8
AL		 668#if defined(CONFIG_SLIRP)
669
670/* slirp network adapter */
671
c92ef6a2
JK		 672#define SLIRP_CFG_HOSTFWD 1
673#define SLIRP_CFG_LEGACY 2
ad196a9d 674
b8e8af38
JK		 675struct slirp_config_str {
676 struct slirp_config_str *next;
ad196a9d
JK		 677 int flags;
678 char str[1024];
c92ef6a2 679 int legacy_format;
b8e8af38
JK		 680};
681
63a01ef8 682static int slirp_inited;
ad196a9d
JK		 683static struct slirp_config_str *slirp_configs;
684const char *legacy_tftp_prefix;
685const char *legacy_bootp_filename;
63a01ef8
AL		 686static VLANClientState *slirp_vc;
687
3c6a0580
JK		 688static void slirp_hostfwd(Monitor *mon, const char *redir_str,
689 int legacy_format);
c92ef6a2
JK		 690static void slirp_guestfwd(Monitor *mon, const char *config_str,
691 int legacy_format);
ad196a9d 692
c5b76b38 693#ifndef _WIN32
ad196a9d
JK		 694static const char *legacy_smb_export;
695
c92ef6a2 696static void slirp_smb(const char *exported_dir, struct in_addr vserver_addr);
c5b76b38 697#endif
b8e8af38 698
63a01ef8
AL		 699int slirp_can_output(void)
700{
701 return !slirp_vc || qemu_can_send_packet(slirp_vc);
702}
703
704void slirp_output(const uint8_t *pkt, int pkt_len)
705{
706#ifdef DEBUG_SLIRP
707 printf("slirp output:\n");
708 hex_dump(stdout, pkt, pkt_len);
709#endif
710 if (!slirp_vc)
711 return;
712 qemu_send_packet(slirp_vc, pkt, pkt_len);
713}
714
715int slirp_is_inited(void)
716{
717 return slirp_inited;
718}
719
4f1c942b 720static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8
AL		 721{
722#ifdef DEBUG_SLIRP
723 printf("slirp input:\n");
724 hex_dump(stdout, buf, size);
725#endif
726 slirp_input(buf, size);
4f1c942b 727 return size;
63a01ef8
AL		 728}
729
8d6249a7
AL		 730static int slirp_in_use;
731
732static void net_slirp_cleanup(VLANClientState *vc)
733{
734 slirp_in_use = 0;
735}
736
ad196a9d 737static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
c92ef6a2
JK		 738 const char *name, int restricted,
739 const char *vnetwork, const char *vhost,
740 const char *vhostname, const char *tftp_export,
741 const char *bootfile, const char *vdhcp_start,
742 const char *vnameserver, const char *smb_export,
743 const char *vsmbserver)
63a01ef8 744{
8d6249a7
AL		 745 if (slirp_in_use) {
746 /* slirp only supports a single instance so far */
747 return -1;
748 }
63a01ef8 749 if (!slirp_inited) {
c92ef6a2
JK		 750 /* default settings according to historic slirp */
751 struct in_addr net = { .s_addr = htonl(0x0a000000) }; /* 10.0.0.0 */
752 struct in_addr mask = { .s_addr = htonl(0xff000000) }; /* 255.0.0.0 */
753 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
754 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
755 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
756#ifndef _WIN32
757 struct in_addr smbsrv = { .s_addr = 0 };
758#endif
759 char buf[20];
760 uint32_t addr;
761 int shift;
762 char *end;
763
ad196a9d
JK		 764 if (!tftp_export) {
765 tftp_export = legacy_tftp_prefix;
766 }
767 if (!bootfile) {
768 bootfile = legacy_bootp_filename;
769 }
c92ef6a2
JK		 770
771 if (vnetwork) {
772 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
773 if (!inet_aton(vnetwork, &net)) {
774 return -1;
775 }
776 addr = ntohl(net.s_addr);
777 if (!(addr & 0x80000000)) {
778 mask.s_addr = htonl(0xff000000); /* class A */
779 } else if ((addr & 0xfff00000) == 0xac100000) {
780 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
781 } else if ((addr & 0xc0000000) == 0x80000000) {
782 mask.s_addr = htonl(0xffff0000); /* class B */
783 } else if ((addr & 0xffff0000) == 0xc0a80000) {
784 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
785 } else if ((addr & 0xffff0000) == 0xc6120000) {
786 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
787 } else if ((addr & 0xe0000000) == 0xe0000000) {
788 mask.s_addr = htonl(0xffffff00); /* class C */
789 } else {
790 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
791 }
792 } else {
793 if (!inet_aton(buf, &net)) {
794 return -1;
795 }
796 shift = strtol(vnetwork, &end, 10);
797 if (*end != '\0') {
798 if (!inet_aton(vnetwork, &mask)) {
799 return -1;
800 }
801 } else if (shift < 4 || shift > 32) {
802 return -1;
803 } else {
804 mask.s_addr = htonl(0xffffffff << (32 - shift));
805 }
806 }
807 net.s_addr &= mask.s_addr;
808 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
809 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
810 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
811 }
812
813 if (vhost && !inet_aton(vhost, &host)) {
814 return -1;
815 }
816 if ((host.s_addr & mask.s_addr) != net.s_addr) {
817 return -1;
818 }
819
820 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
821 return -1;
822 }
823 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
824 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
825 return -1;
826 }
827
828 if (vnameserver && !inet_aton(vnameserver, &dns)) {
829 return -1;
830 }
831 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
832 dns.s_addr == host.s_addr) {
833 return -1;
834 }
835
836#ifndef _WIN32
837 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
838 return -1;
839 }
840#endif
841
842 slirp_init(restricted, net, mask, host, vhostname, tftp_export,
843 bootfile, dhcp, dns);
63a01ef8 844 slirp_inited = 1;
b8e8af38 845
ad196a9d
JK		 846 while (slirp_configs) {
847 struct slirp_config_str *config = slirp_configs;
b8e8af38 848
c92ef6a2 849 if (config->flags & SLIRP_CFG_HOSTFWD) {
3c6a0580
JK		 850 slirp_hostfwd(mon, config->str,
851 config->flags & SLIRP_CFG_LEGACY);
ad196a9d 852 } else {
c92ef6a2
JK		 853 slirp_guestfwd(mon, config->str,
854 config->flags & SLIRP_CFG_LEGACY);
ad196a9d
JK		 855 }
856 slirp_configs = config->next;
b8e8af38
JK		 857 qemu_free(config);
858 }
859#ifndef _WIN32
ad196a9d
JK		 860 if (!smb_export) {
861 smb_export = legacy_smb_export;
862 }
863 if (smb_export) {
c92ef6a2 864 slirp_smb(smb_export, smbsrv);
b8e8af38
JK		 865 }
866#endif
63a01ef8 867 }
b8e8af38 868
463af534 869 slirp_vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive,
b8e8af38 870 NULL, net_slirp_cleanup, NULL);
7cb7434b 871 slirp_vc->info_str[0] = '\0';
8d6249a7 872 slirp_in_use = 1;
63a01ef8
AL		 873 return 0;
874}
875
3c6a0580 876void net_slirp_hostfwd_remove(Monitor *mon, const char *src_str)
c1261d8d 877{
3c6a0580 878 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c1261d8d
AG		 879 int host_port;
880 char buf[256] = "";
3c6a0580 881 const char *p = src_str;
c1261d8d
AG		 882 int is_udp = 0;
883 int n;
884
f3546deb
JK		 885 if (!slirp_inited) {
886 monitor_printf(mon, "user mode network stack not in use\n");
c1261d8d 887 return;
f3546deb 888 }
c1261d8d 889
3c6a0580 890 if (!src_str || !src_str[0])
c1261d8d
AG		 891 goto fail_syntax;
892
893 get_str_sep(buf, sizeof(buf), &p, ':');
894
895 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
896 is_udp = 0;
897 } else if (!strcmp(buf, "udp")) {
898 is_udp = 1;
899 } else {
900 goto fail_syntax;
901 }
902
3c6a0580
JK		 903 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
904 goto fail_syntax;
905 }
906 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
907 goto fail_syntax;
908 }
909
c1261d8d
AG		 910 host_port = atoi(p);
911
3c6a0580 912 n = slirp_remove_hostfwd(is_udp, host_addr, host_port);
c1261d8d 913
3c6a0580
JK		 914 monitor_printf(mon, "removed %d host forwarding rules for %s\n", n,
915 src_str);
c1261d8d
AG		 916 return;
917
918 fail_syntax:
919 monitor_printf(mon, "invalid format\n");
920}
921
3c6a0580
JK		 922static void slirp_hostfwd(Monitor *mon, const char *redir_str,
923 int legacy_format)
63a01ef8 924{
3c6a0580 925 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c92ef6a2 926 struct in_addr guest_addr = { .s_addr = 0 };
63a01ef8 927 int host_port, guest_port;
b8e8af38 928 const char *p;
c92ef6a2 929 char buf[256];
b8e8af38 930 int is_udp;
c92ef6a2 931 char *end;
1c6ed9f3 932
63a01ef8 933 p = redir_str;
b8e8af38 934 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 935 goto fail_syntax;
b8e8af38 936 }
d4ebe193 937 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
63a01ef8
AL		 938 is_udp = 0;
939 } else if (!strcmp(buf, "udp")) {
940 is_udp = 1;
941 } else {
d4ebe193 942 goto fail_syntax;
63a01ef8
AL		 943 }
944
3c6a0580
JK		 945 if (!legacy_format) {
946 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
947 goto fail_syntax;
948 }
949 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
950 goto fail_syntax;
951 }
952 }
953
954 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
d4ebe193 955 goto fail_syntax;
b8e8af38 956 }
c92ef6a2
JK		 957 host_port = strtol(buf, &end, 0);
958 if (*end != '\0' || host_port < 1 || host_port > 65535) {
d4ebe193 959 goto fail_syntax;
b8e8af38 960 }
63a01ef8 961
b8e8af38 962 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 963 goto fail_syntax;
b8e8af38 964 }
c92ef6a2 965 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
d4ebe193 966 goto fail_syntax;
b8e8af38 967 }
63a01ef8 968
c92ef6a2
JK		 969 guest_port = strtol(p, &end, 0);
970 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
d4ebe193 971 goto fail_syntax;
b8e8af38 972 }
63a01ef8 973
3c6a0580
JK		 974 if (slirp_add_hostfwd(is_udp, host_addr, host_port,
975 guest_addr, guest_port) < 0) {
c92ef6a2
JK		 976 config_error(mon, "could not set up host forwarding rule '%s'\n",
977 redir_str);
63a01ef8
AL		 978 }
979 return;
d4ebe193
AL		 980
981 fail_syntax:
c92ef6a2 982 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
63a01ef8
AL		 983}
984
f3546deb 985void net_slirp_hostfwd_add(Monitor *mon, const char *redir_str)
b8e8af38 986{
b8e8af38 987 if (!slirp_inited) {
f3546deb 988 monitor_printf(mon, "user mode network stack not in use\n");
b8e8af38
JK		 989 return;
990 }
991
3c6a0580 992 slirp_hostfwd(mon, redir_str, 0);
f3546deb
JK		 993}
994
995void net_slirp_redir(const char *redir_str)
996{
997 struct slirp_config_str *config;
998
999 if (!slirp_inited) {
1000 config = qemu_malloc(sizeof(*config));
1001 pstrcpy(config->str, sizeof(config->str), redir_str);
3c6a0580 1002 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
f3546deb
JK		 1003 config->next = slirp_configs;
1004 slirp_configs = config;
b8e8af38
JK		 1005 return;
1006 }
1007
3c6a0580 1008 slirp_hostfwd(NULL, redir_str, 1);
b8e8af38
JK		 1009}
1010
63a01ef8
AL		 1011#ifndef _WIN32
1012
1013static char smb_dir[1024];
1014
1015static void erase_dir(char *dir_name)
1016{
1017 DIR *d;
1018 struct dirent *de;
1019 char filename[1024];
1020
1021 /* erase all the files in the directory */
511d2b14 1022 if ((d = opendir(dir_name)) != NULL) {
63a01ef8
AL		 1023 for(;;) {
1024 de = readdir(d);
1025 if (!de)
1026 break;
1027 if (strcmp(de->d_name, ".") != 0 &&
1028 strcmp(de->d_name, "..") != 0) {
1029 snprintf(filename, sizeof(filename), "%s/%s",
1030 smb_dir, de->d_name);
1031 if (unlink(filename) != 0) /* is it a directory? */
1032 erase_dir(filename);
1033 }
1034 }
1035 closedir(d);
1036 rmdir(dir_name);
1037 }
1038}
1039
1040/* automatic user mode samba server configuration */
1041static void smb_exit(void)
1042{
1043 erase_dir(smb_dir);
1044}
1045
c92ef6a2 1046static void slirp_smb(const char *exported_dir, struct in_addr vserver_addr)
63a01ef8
AL		 1047{
1048 char smb_conf[1024];
1049 char smb_cmdline[1024];
1050 FILE *f;
1051
63a01ef8 1052 /* XXX: better tmp dir construction */
3f4cb3d3 1053 snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%ld", (long)getpid());
63a01ef8
AL		 1054 if (mkdir(smb_dir, 0700) < 0) {
1055 fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
1056 exit(1);
1057 }
1058 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
1059
1060 f = fopen(smb_conf, "w");
1061 if (!f) {
1062 fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
1063 exit(1);
1064 }
1065 fprintf(f,
1066 "[global]\n"
1067 "private dir=%s\n"
1068 "smb ports=0\n"
1069 "socket address=127.0.0.1\n"
1070 "pid directory=%s\n"
1071 "lock directory=%s\n"
1072 "log file=%s/log.smbd\n"
1073 "smb passwd file=%s/smbpasswd\n"
1074 "security = share\n"
1075 "[qemu]\n"
1076 "path=%s\n"
1077 "read only=no\n"
1078 "guest ok=yes\n",
1079 smb_dir,
1080 smb_dir,
1081 smb_dir,
1082 smb_dir,
1083 smb_dir,
1084 exported_dir
1085 );
1086 fclose(f);
1087 atexit(smb_exit);
1088
1089 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1090 SMBD_COMMAND, smb_conf);
1091
c92ef6a2
JK		 1092 if (slirp_add_exec(0, smb_cmdline, vserver_addr, 139) < 0) {
1093 fprintf(stderr, "conflicting/invalid smbserver address\n");
1094 exit(1);
1095 }
63a01ef8
AL		 1096}
1097
ad196a9d 1098/* automatic user mode samba server configuration (legacy interface) */
b8e8af38
JK		 1099void net_slirp_smb(const char *exported_dir)
1100{
c92ef6a2
JK		 1101 struct in_addr vserver_addr = { .s_addr = 0 };
1102
ad196a9d 1103 if (legacy_smb_export) {
b8e8af38
JK		 1104 fprintf(stderr, "-smb given twice\n");
1105 exit(1);
1106 }
ad196a9d 1107 legacy_smb_export = exported_dir;
b8e8af38 1108 if (slirp_inited) {
c92ef6a2 1109 slirp_smb(exported_dir, vserver_addr);
b8e8af38
JK		 1110 }
1111}
1112
63a01ef8 1113#endif /* !defined(_WIN32) */
b8e8af38 1114
376253ec 1115void do_info_slirp(Monitor *mon)
63a01ef8
AL		 1116{
1117 slirp_stats();
1118}
1119
c92ef6a2 1120struct GuestFwd {
8ca9217d 1121 CharDriverState *hd;
c92ef6a2 1122 struct in_addr server;
8ca9217d 1123 int port;
511d2b14 1124};
8ca9217d 1125
c92ef6a2 1126static int guestfwd_can_read(void *opaque)
8ca9217d 1127{
c92ef6a2
JK		 1128 struct GuestFwd *fwd = opaque;
1129 return slirp_socket_can_recv(fwd->server, fwd->port);
8ca9217d
AL		 1130}
1131
c92ef6a2 1132static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
8ca9217d 1133{
c92ef6a2
JK		 1134 struct GuestFwd *fwd = opaque;
1135 slirp_socket_recv(fwd->server, fwd->port, buf, size);
8ca9217d
AL		 1136}
1137
c92ef6a2
JK		 1138static void slirp_guestfwd(Monitor *mon, const char *config_str,
1139 int legacy_format)
ad196a9d 1140{
c92ef6a2
JK		 1141 struct in_addr server = { .s_addr = 0 };
1142 struct GuestFwd *fwd;
1143 const char *p;
1144 char buf[128];
1145 char *end;
ad196a9d
JK		 1146 int port;
1147
c92ef6a2
JK		 1148 p = config_str;
1149 if (legacy_format) {
1150 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1151 goto fail_syntax;
1152 }
1153 } else {
1154 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1155 goto fail_syntax;
1156 }
1157 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1158 goto fail_syntax;
1159 }
1160 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1161 goto fail_syntax;
1162 }
1163 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1164 goto fail_syntax;
1165 }
1166 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1167 goto fail_syntax;
1168 }
1169 }
1170 port = strtol(buf, &end, 10);
1171 if (*end != '\0' || port < 1 || port > 65535) {
1172 goto fail_syntax;
ad196a9d 1173 }
ad196a9d 1174
c92ef6a2
JK		 1175 fwd = qemu_malloc(sizeof(struct GuestFwd));
1176 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1177 fwd->hd = qemu_chr_open(buf, p, NULL);
1178 if (!fwd->hd) {
1179 config_error(mon, "could not open guest forwarding device '%s'\n",
1180 buf);
1181 qemu_free(fwd);
ad196a9d
JK		 1182 return;
1183 }
c92ef6a2
JK		 1184 fwd->server = server;
1185 fwd->port = port;
ad196a9d 1186
c92ef6a2
JK		 1187 if (slirp_add_exec(3, fwd->hd, server, port) < 0) {
1188 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1189 "rule '%s'\n", config_str);
1190 qemu_free(fwd);
1191 return;
1192 }
1193 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1194 NULL, fwd);
ad196a9d 1195 return;
c92ef6a2
JK		 1196
1197 fail_syntax:
1198 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
ad196a9d
JK		 1199}
1200
63a01ef8
AL		 1201#endif /* CONFIG_SLIRP */
1202
1203#if !defined(_WIN32)
1204
1205typedef struct TAPState {
1206 VLANClientState *vc;
1207 int fd;
1208 char down_script[1024];
973cbd37 1209 char down_script_arg[128];
5b01e886 1210 uint8_t buf[4096];
b664e367 1211 unsigned int read_poll : 1;
1f7babf6 1212 unsigned int write_poll : 1;
63a01ef8
AL		 1213} TAPState;
1214
b946a153
AL		 1215static int launch_script(const char *setup_script, const char *ifname, int fd);
1216
b664e367
MM		 1217static int tap_can_send(void *opaque);
1218static void tap_send(void *opaque);
1f7babf6 1219static void tap_writable(void *opaque);
b664e367
MM		 1220
1221static void tap_update_fd_handler(TAPState *s)
1222{
1223 qemu_set_fd_handler2(s->fd,
1224 s->read_poll ? tap_can_send : NULL,
1225 s->read_poll ? tap_send : NULL,
1f7babf6 1226 s->write_poll ? tap_writable : NULL,
b664e367
MM		 1227 s);
1228}
1229
1230static void tap_read_poll(TAPState *s, int enable)
1231{
1232 s->read_poll = !!enable;
1233 tap_update_fd_handler(s);
1234}
1235
1f7babf6
MM		 1236static void tap_write_poll(TAPState *s, int enable)
1237{
1238 s->write_poll = !!enable;
1239 tap_update_fd_handler(s);
1240}
1241
1242static void tap_writable(void *opaque)
1243{
1244 TAPState *s = opaque;
1245
1246 tap_write_poll(s, 0);
1247
1248 qemu_flush_queued_packets(s->vc);
1249}
1250
e3f5ec2b 1251static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
b535b7b2
AL		 1252 int iovcnt)
1253{
e3f5ec2b 1254 TAPState *s = vc->opaque;
b535b7b2
AL		 1255 ssize_t len;
1256
1257 do {
1258 len = writev(s->fd, iov, iovcnt);
1f7babf6
MM		 1259 } while (len == -1 && errno == EINTR);
1260
1261 if (len == -1 && errno == EAGAIN) {
1262 tap_write_poll(s, 1);
1263 return 0;
1264 }
b535b7b2
AL		 1265
1266 return len;
1267}
b535b7b2 1268
4f1c942b 1269static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1270{
e3f5ec2b 1271 TAPState *s = vc->opaque;
4f1c942b
MM		 1272 ssize_t len;
1273
1274 do {
1275 len = write(s->fd, buf, size);
1276 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1277
1278 return len;
63a01ef8
AL		 1279}
1280
3471b757
MM		 1281static int tap_can_send(void *opaque)
1282{
1283 TAPState *s = opaque;
1284
1285 return qemu_can_send_packet(s->vc);
1286}
1287
63a01ef8 1288#ifdef __sun__
5a6d8815
MM		 1289static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1290{
63a01ef8
AL		 1291 struct strbuf sbuf;
1292 int f = 0;
5a6d8815
MM		 1293
1294 sbuf.maxlen = maxlen;
3f4cb3d3 1295 sbuf.buf = (char *)buf;
5a6d8815
MM		 1296
1297 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1298}
63a01ef8 1299#else
5a6d8815
MM		 1300static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1301{
1302 return read(tapfd, buf, maxlen);
1303}
63a01ef8 1304#endif
5a6d8815 1305
783527a9 1306static void tap_send_completed(VLANClientState *vc, ssize_t len)
e19eb224
MM		 1307{
1308 TAPState *s = vc->opaque;
b664e367 1309 tap_read_poll(s, 1);
e19eb224
MM		 1310}
1311
5a6d8815
MM		 1312static void tap_send(void *opaque)
1313{
1314 TAPState *s = opaque;
5a6d8815
MM		 1315 int size;
1316
e19eb224
MM		 1317 do {
1318 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1319 if (size <= 0) {
1320 break;
1321 }
1322
1323 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1324 if (size == 0) {
b664e367 1325 tap_read_poll(s, 0);
e19eb224
MM		 1326 }
1327 } while (size > 0);
63a01ef8
AL		 1328}
1329
0df0ff6d
MM		 1330static void tap_set_sndbuf(TAPState *s, int sndbuf, Monitor *mon)
1331{
1332#ifdef TUNSETSNDBUF
1333 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1) {
1334 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1335 strerror(errno));
1336 }
1337#else
1338 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1339#endif
1340}
1341
b946a153
AL		 1342static void tap_cleanup(VLANClientState *vc)
1343{
1344 TAPState *s = vc->opaque;
1345
b9adce2c
MM		 1346 qemu_purge_queued_packets(vc);
1347
b946a153
AL		 1348 if (s->down_script[0])
1349 launch_script(s->down_script, s->down_script_arg, s->fd);
1350
b664e367 1351 tap_read_poll(s, 0);
1f7babf6 1352 tap_write_poll(s, 0);
b946a153
AL		 1353 close(s->fd);
1354 qemu_free(s);
1355}
1356
63a01ef8
AL		 1357/* fd support */
1358
7a9f6e4a
AL		 1359static TAPState *net_tap_fd_init(VLANState *vlan,
1360 const char *model,
1361 const char *name,
1362 int fd)
63a01ef8
AL		 1363{
1364 TAPState *s;
1365
1366 s = qemu_mallocz(sizeof(TAPState));
63a01ef8 1367 s->fd = fd;
463af534
MM		 1368 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1369 tap_receive_iov, tap_cleanup, s);
b664e367 1370 tap_read_poll(s, 1);
7cb7434b 1371 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
63a01ef8
AL		 1372 return s;
1373}
1374
179a2c19 1375#if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
63a01ef8
AL		 1376static int tap_open(char *ifname, int ifname_size)
1377{
1378 int fd;
1379 char *dev;
1380 struct stat s;
1381
1382 TFR(fd = open("/dev/tap", O_RDWR));
1383 if (fd < 0) {
1384 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1385 return -1;
1386 }
1387
1388 fstat(fd, &s);
1389 dev = devname(s.st_rdev, S_IFCHR);
1390 pstrcpy(ifname, ifname_size, dev);
1391
1392 fcntl(fd, F_SETFL, O_NONBLOCK);
1393 return fd;
1394}
1395#elif defined(__sun__)
1396#define TUNNEWPPA (('T'<<16) | 0x0001)
1397/*
1398 * Allocate TAP device, returns opened fd.
1399 * Stores dev name in the first arg(must be large enough).
1400 */
3f4cb3d3 1401static int tap_alloc(char *dev, size_t dev_size)
63a01ef8
AL		 1402{
1403 int tap_fd, if_fd, ppa = -1;
1404 static int ip_fd = 0;
1405 char *ptr;
1406
1407 static int arp_fd = 0;
1408 int ip_muxid, arp_muxid;
1409 struct strioctl strioc_if, strioc_ppa;
1410 int link_type = I_PLINK;;
1411 struct lifreq ifr;
1412 char actual_name[32] = "";
1413
1414 memset(&ifr, 0x0, sizeof(ifr));
1415
1416 if( *dev ){
1417 ptr = dev;
47398b9c 1418 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
63a01ef8
AL		 1419 ppa = atoi(ptr);
1420 }
1421
1422 /* Check if IP device was opened */
1423 if( ip_fd )
1424 close(ip_fd);
1425
1426 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1427 if (ip_fd < 0) {
1428 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1429 return -1;
1430 }
1431
1432 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1433 if (tap_fd < 0) {
1434 syslog(LOG_ERR, "Can't open /dev/tap");
1435 return -1;
1436 }
1437
1438 /* Assign a new PPA and get its unit number. */
1439 strioc_ppa.ic_cmd = TUNNEWPPA;
1440 strioc_ppa.ic_timout = 0;
1441 strioc_ppa.ic_len = sizeof(ppa);
1442 strioc_ppa.ic_dp = (char *)&ppa;
1443 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1444 syslog (LOG_ERR, "Can't assign new interface");
1445
1446 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1447 if (if_fd < 0) {
1448 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1449 return -1;
1450 }
1451 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1452 syslog(LOG_ERR, "Can't push IP module");
1453 return -1;
1454 }
1455
1456 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1457 syslog(LOG_ERR, "Can't get flags\n");
1458
1459 snprintf (actual_name, 32, "tap%d", ppa);
1460 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1461
1462 ifr.lifr_ppa = ppa;
1463 /* Assign ppa according to the unit number returned by tun device */
1464
1465 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1466 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1467 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1468 syslog (LOG_ERR, "Can't get flags\n");
1469 /* Push arp module to if_fd */
1470 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1471 syslog (LOG_ERR, "Can't push ARP module (2)");
1472
1473 /* Push arp module to ip_fd */
1474 if (ioctl (ip_fd, I_POP, NULL) < 0)
1475 syslog (LOG_ERR, "I_POP failed\n");
1476 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1477 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1478 /* Open arp_fd */
1479 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1480 if (arp_fd < 0)
1481 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1482
1483 /* Set ifname to arp */
1484 strioc_if.ic_cmd = SIOCSLIFNAME;
1485 strioc_if.ic_timout = 0;
1486 strioc_if.ic_len = sizeof(ifr);
1487 strioc_if.ic_dp = (char *)&ifr;
1488 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1489 syslog (LOG_ERR, "Can't set ifname to arp\n");
1490 }
1491
1492 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1493 syslog(LOG_ERR, "Can't link TAP device to IP");
1494 return -1;
1495 }
1496
1497 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1498 syslog (LOG_ERR, "Can't link TAP device to ARP");
1499
1500 close (if_fd);
1501
1502 memset(&ifr, 0x0, sizeof(ifr));
1503 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1504 ifr.lifr_ip_muxid = ip_muxid;
1505 ifr.lifr_arp_muxid = arp_muxid;
1506
1507 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1508 {
1509 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1510 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1511 syslog (LOG_ERR, "Can't set multiplexor id");
1512 }
1513
1514 snprintf(dev, dev_size, "tap%d", ppa);
1515 return tap_fd;
1516}
1517
1518static int tap_open(char *ifname, int ifname_size)
1519{
1520 char dev[10]="";
1521 int fd;
1522 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1523 fprintf(stderr, "Cannot allocate TAP device\n");
1524 return -1;
1525 }
1526 pstrcpy(ifname, ifname_size, dev);
1527 fcntl(fd, F_SETFL, O_NONBLOCK);
1528 return fd;
1529}
b29fe3ed 1530#elif defined (_AIX)
1531static int tap_open(char *ifname, int ifname_size)
1532{
1533 fprintf (stderr, "no tap on AIX\n");
1534 return -1;
1535}
63a01ef8
AL		 1536#else
1537static int tap_open(char *ifname, int ifname_size)
1538{
1539 struct ifreq ifr;
1540 int fd, ret;
1541
1542 TFR(fd = open("/dev/net/tun", O_RDWR));
1543 if (fd < 0) {
1544 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1545 return -1;
1546 }
1547 memset(&ifr, 0, sizeof(ifr));
1548 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1549 if (ifname[0] != '\0')
1550 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1551 else
1552 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1553 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1554 if (ret != 0) {
1555 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1556 close(fd);
1557 return -1;
1558 }
1559 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1560 fcntl(fd, F_SETFL, O_NONBLOCK);
1561 return fd;
1562}
1563#endif
1564
1565static int launch_script(const char *setup_script, const char *ifname, int fd)
1566{
7c3370d4 1567 sigset_t oldmask, mask;
63a01ef8
AL		 1568 int pid, status;
1569 char *args[3];
1570 char **parg;
1571
7c3370d4
JK		 1572 sigemptyset(&mask);
1573 sigaddset(&mask, SIGCHLD);
1574 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1575
1576 /* try to launch network script */
1577 pid = fork();
1578 if (pid == 0) {
1579 int open_max = sysconf(_SC_OPEN_MAX), i;
1580
1581 for (i = 0; i < open_max; i++) {
1582 if (i != STDIN_FILENO &&
1583 i != STDOUT_FILENO &&
1584 i != STDERR_FILENO &&
1585 i != fd) {
1586 close(i);
63a01ef8
AL		 1587 }
1588 }
7c3370d4
JK		 1589 parg = args;
1590 *parg++ = (char *)setup_script;
1591 *parg++ = (char *)ifname;
1592 *parg++ = NULL;
1593 execv(setup_script, args);
1594 _exit(1);
1595 } else if (pid > 0) {
1596 while (waitpid(pid, &status, 0) != pid) {
1597 /* loop */
1598 }
1599 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1600
1601 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1602 return 0;
1603 }
1604 }
1605 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1606 return -1;
63a01ef8
AL		 1607}
1608
4a77b25e
MM		 1609static TAPState *net_tap_init(VLANState *vlan, const char *model,
1610 const char *name, const char *ifname1,
1611 const char *setup_script, const char *down_script)
63a01ef8
AL		 1612{
1613 TAPState *s;
1614 int fd;
1615 char ifname[128];
1616
1617 if (ifname1 != NULL)
1618 pstrcpy(ifname, sizeof(ifname), ifname1);
1619 else
1620 ifname[0] = '\0';
1621 TFR(fd = tap_open(ifname, sizeof(ifname)));
1622 if (fd < 0)
4a77b25e 1623 return NULL;
63a01ef8
AL		 1624
1625 if (!setup_script || !strcmp(setup_script, "no"))
1626 setup_script = "";
4a77b25e
MM		 1627 if (setup_script[0] != '\0' &&
1628 launch_script(setup_script, ifname, fd)) {
1629 return NULL;
63a01ef8 1630 }
7a9f6e4a 1631 s = net_tap_fd_init(vlan, model, name, fd);
63a01ef8 1632 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
7cb7434b
AL		 1633 "ifname=%s,script=%s,downscript=%s",
1634 ifname, setup_script, down_script);
973cbd37 1635 if (down_script && strcmp(down_script, "no")) {
63a01ef8 1636 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
973cbd37
AL		 1637 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1638 }
4a77b25e 1639 return s;
63a01ef8
AL		 1640}
1641
1642#endif /* !_WIN32 */
1643
1644#if defined(CONFIG_VDE)
1645typedef struct VDEState {
1646 VLANClientState *vc;
1647 VDECONN *vde;
1648} VDEState;
1649
1650static void vde_to_qemu(void *opaque)
1651{
1652 VDEState *s = opaque;
1653 uint8_t buf[4096];
1654 int size;
1655
cc63bb0f 1656 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
63a01ef8
AL		 1657 if (size > 0) {
1658 qemu_send_packet(s->vc, buf, size);
1659 }
1660}
1661
4f1c942b 1662static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1663{
e3f5ec2b 1664 VDEState *s = vc->opaque;
068daedd 1665 ssize_t ret;
4f1c942b
MM		 1666
1667 do {
1668 ret = vde_send(s->vde, (const char *)buf, size, 0);
1669 } while (ret < 0 && errno == EINTR);
1670
1671 return ret;
63a01ef8
AL		 1672}
1673
b946a153
AL		 1674static void vde_cleanup(VLANClientState *vc)
1675{
1676 VDEState *s = vc->opaque;
1677 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1678 vde_close(s->vde);
1679 qemu_free(s);
1680}
1681
7a9f6e4a
AL		 1682static int net_vde_init(VLANState *vlan, const char *model,
1683 const char *name, const char *sock,
bf38c1a0 1684 int port, const char *group, int mode)
63a01ef8
AL		 1685{
1686 VDEState *s;
1687 char *init_group = strlen(group) ? (char *)group : NULL;
1688 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1689
1690 struct vde_open_args args = {
1691 .port = port,
1692 .group = init_group,
1693 .mode = mode,
1694 };
1695
1696 s = qemu_mallocz(sizeof(VDEState));
cc63bb0f 1697 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
63a01ef8
AL		 1698 if (!s->vde){
1699 free(s);
1700 return -1;
1701 }
e3f5ec2b 1702 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
b946a153 1703 NULL, vde_cleanup, s);
63a01ef8 1704 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
7cb7434b 1705 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
63a01ef8
AL		 1706 sock, vde_datafd(s->vde));
1707 return 0;
1708}
1709#endif
1710
1711/* network connection */
1712typedef struct NetSocketState {
1713 VLANClientState *vc;
1714 int fd;
1715 int state; /* 0 = getting length, 1 = getting data */
abcd2baa
AL		 1716 unsigned int index;
1717 unsigned int packet_len;
63a01ef8
AL		 1718 uint8_t buf[4096];
1719 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1720} NetSocketState;
1721
1722typedef struct NetSocketListenState {
1723 VLANState *vlan;
bf38c1a0 1724 char *model;
7a9f6e4a 1725 char *name;
63a01ef8
AL		 1726 int fd;
1727} NetSocketListenState;
1728
1729/* XXX: we consider we can send the whole packet without blocking */
4f1c942b 1730static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1731{
e3f5ec2b 1732 NetSocketState *s = vc->opaque;
63a01ef8
AL		 1733 uint32_t len;
1734 len = htonl(size);
1735
1736 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
4f1c942b 1737 return send_all(s->fd, buf, size);
63a01ef8
AL		 1738}
1739
4f1c942b 1740static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1741{
e3f5ec2b 1742 NetSocketState *s = vc->opaque;
4f1c942b 1743
70503264 1744 return sendto(s->fd, (const void *)buf, size, 0,
4f1c942b 1745 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
63a01ef8
AL		 1746}
1747
1748static void net_socket_send(void *opaque)
1749{
1750 NetSocketState *s = opaque;
abcd2baa
AL		 1751 int size, err;
1752 unsigned l;
63a01ef8
AL		 1753 uint8_t buf1[4096];
1754 const uint8_t *buf;
1755
c5b76b38 1756 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
63a01ef8
AL		 1757 if (size < 0) {
1758 err = socket_error();
1759 if (err != EWOULDBLOCK)
1760 goto eoc;
1761 } else if (size == 0) {
1762 /* end of connection */
1763 eoc:
1764 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1765 closesocket(s->fd);
1766 return;
1767 }
1768 buf = buf1;
1769 while (size > 0) {
1770 /* reassemble a packet from the network */
1771 switch(s->state) {
1772 case 0:
1773 l = 4 - s->index;
1774 if (l > size)
1775 l = size;
1776 memcpy(s->buf + s->index, buf, l);
1777 buf += l;
1778 size -= l;
1779 s->index += l;
1780 if (s->index == 4) {
1781 /* got length */
1782 s->packet_len = ntohl(*(uint32_t *)s->buf);
1783 s->index = 0;
1784 s->state = 1;
1785 }
1786 break;
1787 case 1:
1788 l = s->packet_len - s->index;
1789 if (l > size)
1790 l = size;
abcd2baa
AL		 1791 if (s->index + l <= sizeof(s->buf)) {
1792 memcpy(s->buf + s->index, buf, l);
1793 } else {
1794 fprintf(stderr, "serious error: oversized packet received,"
1795 "connection terminated.\n");
1796 s->state = 0;
1797 goto eoc;
1798 }
1799
63a01ef8
AL		 1800 s->index += l;
1801 buf += l;
1802 size -= l;
1803 if (s->index >= s->packet_len) {
1804 qemu_send_packet(s->vc, s->buf, s->packet_len);
1805 s->index = 0;
1806 s->state = 0;
1807 }
1808 break;
1809 }
1810 }
1811}
1812
1813static void net_socket_send_dgram(void *opaque)
1814{
1815 NetSocketState *s = opaque;
1816 int size;
1817
c5b76b38 1818 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
63a01ef8
AL		 1819 if (size < 0)
1820 return;
1821 if (size == 0) {
1822 /* end of connection */
1823 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1824 return;
1825 }
1826 qemu_send_packet(s->vc, s->buf, size);
1827}
1828
1829static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1830{
1831 struct ip_mreq imr;
1832 int fd;
1833 int val, ret;
1834 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1835 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1836 inet_ntoa(mcastaddr->sin_addr),
1837 (int)ntohl(mcastaddr->sin_addr.s_addr));
1838 return -1;
1839
1840 }
1841 fd = socket(PF_INET, SOCK_DGRAM, 0);
1842 if (fd < 0) {
1843 perror("socket(PF_INET, SOCK_DGRAM)");
1844 return -1;
1845 }
1846
1847 val = 1;
1848 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1849 (const char *)&val, sizeof(val));
1850 if (ret < 0) {
1851 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1852 goto fail;
1853 }
1854
1855 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1856 if (ret < 0) {
1857 perror("bind");
1858 goto fail;
1859 }
1860
1861 /* Add host to multicast group */
1862 imr.imr_multiaddr = mcastaddr->sin_addr;
1863 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1864
1865 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1866 (const char *)&imr, sizeof(struct ip_mreq));
1867 if (ret < 0) {
1868 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1869 goto fail;
1870 }
1871
1872 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1873 val = 1;
1874 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1875 (const char *)&val, sizeof(val));
1876 if (ret < 0) {
1877 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1878 goto fail;
1879 }
1880
1881 socket_set_nonblock(fd);
1882 return fd;
1883fail:
1884 if (fd >= 0)
1885 closesocket(fd);
1886 return -1;
1887}
1888
b946a153
AL		 1889static void net_socket_cleanup(VLANClientState *vc)
1890{
1891 NetSocketState *s = vc->opaque;
1892 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1893 close(s->fd);
1894 qemu_free(s);
1895}
1896
7a9f6e4a
AL		 1897static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1898 const char *model,
1899 const char *name,
bf38c1a0 1900 int fd, int is_connected)
63a01ef8
AL		 1901{
1902 struct sockaddr_in saddr;
1903 int newfd;
1904 socklen_t saddr_len;
1905 NetSocketState *s;
1906
1907 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1908 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1909 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1910 */
1911
1912 if (is_connected) {
1913 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1914 /* must be bound */
1915 if (saddr.sin_addr.s_addr==0) {
1916 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1917 fd);
1918 return NULL;
1919 }
1920 /* clone dgram socket */
1921 newfd = net_socket_mcast_create(&saddr);
1922 if (newfd < 0) {
1923 /* error already reported by net_socket_mcast_create() */
1924 close(fd);
1925 return NULL;
1926 }
1927 /* clone newfd to fd, close newfd */
1928 dup2(newfd, fd);
1929 close(newfd);
1930
1931 } else {
1932 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1933 fd, strerror(errno));
1934 return NULL;
1935 }
1936 }
1937
1938 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8
AL		 1939 s->fd = fd;
1940
463af534 1941 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
b946a153 1942 NULL, net_socket_cleanup, s);
63a01ef8
AL		 1943 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1944
1945 /* mcast: save bound address as dst */
1946 if (is_connected) s->dgram_dst=saddr;
1947
1948 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1949 "socket: fd=%d (%s mcast=%s:%d)",
1950 fd, is_connected? "cloned" : "",
1951 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1952 return s;
1953}
1954
1955static void net_socket_connect(void *opaque)
1956{
1957 NetSocketState *s = opaque;
1958 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1959}
1960
7a9f6e4a
AL		 1961static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
1962 const char *model,
1963 const char *name,
bf38c1a0 1964 int fd, int is_connected)
63a01ef8
AL		 1965{
1966 NetSocketState *s;
1967 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8 1968 s->fd = fd;
463af534 1969 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
b946a153 1970 NULL, net_socket_cleanup, s);
63a01ef8
AL		 1971 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1972 "socket: fd=%d", fd);
1973 if (is_connected) {
1974 net_socket_connect(s);
1975 } else {
1976 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1977 }
1978 return s;
1979}
1980
7a9f6e4a
AL		 1981static NetSocketState *net_socket_fd_init(VLANState *vlan,
1982 const char *model, const char *name,
bf38c1a0 1983 int fd, int is_connected)
63a01ef8
AL		 1984{
1985 int so_type=-1, optlen=sizeof(so_type);
1986
1987 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
1988 (socklen_t *)&optlen)< 0) {
1989 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
1990 return NULL;
1991 }
1992 switch(so_type) {
1993 case SOCK_DGRAM:
7a9f6e4a 1994 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
63a01ef8 1995 case SOCK_STREAM:
7a9f6e4a 1996 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 1997 default:
1998 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
1999 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
7a9f6e4a 2000 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2001 }
2002 return NULL;
2003}
2004
2005static void net_socket_accept(void *opaque)
2006{
2007 NetSocketListenState *s = opaque;
2008 NetSocketState *s1;
2009 struct sockaddr_in saddr;
2010 socklen_t len;
2011 int fd;
2012
2013 for(;;) {
2014 len = sizeof(saddr);
2015 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2016 if (fd < 0 && errno != EINTR) {
2017 return;
2018 } else if (fd >= 0) {
2019 break;
2020 }
2021 }
7a9f6e4a 2022 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
63a01ef8
AL		 2023 if (!s1) {
2024 closesocket(fd);
2025 } else {
2026 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2027 "socket: connection from %s:%d",
2028 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2029 }
2030}
2031
7a9f6e4a
AL		 2032static int net_socket_listen_init(VLANState *vlan,
2033 const char *model,
2034 const char *name,
bf38c1a0 2035 const char *host_str)
63a01ef8
AL		 2036{
2037 NetSocketListenState *s;
2038 int fd, val, ret;
2039 struct sockaddr_in saddr;
2040
2041 if (parse_host_port(&saddr, host_str) < 0)
2042 return -1;
2043
2044 s = qemu_mallocz(sizeof(NetSocketListenState));
63a01ef8
AL		 2045
2046 fd = socket(PF_INET, SOCK_STREAM, 0);
2047 if (fd < 0) {
2048 perror("socket");
2049 return -1;
2050 }
2051 socket_set_nonblock(fd);
2052
2053 /* allow fast reuse */
2054 val = 1;
2055 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2056
2057 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2058 if (ret < 0) {
2059 perror("bind");
2060 return -1;
2061 }
2062 ret = listen(fd, 0);
2063 if (ret < 0) {
2064 perror("listen");
2065 return -1;
2066 }
2067 s->vlan = vlan;
bf38c1a0 2068 s->model = strdup(model);
ea053add 2069 s->name = name ? strdup(name) : NULL;
63a01ef8
AL		 2070 s->fd = fd;
2071 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2072 return 0;
2073}
2074
7a9f6e4a
AL		 2075static int net_socket_connect_init(VLANState *vlan,
2076 const char *model,
2077 const char *name,
bf38c1a0 2078 const char *host_str)
63a01ef8
AL		 2079{
2080 NetSocketState *s;
2081 int fd, connected, ret, err;
2082 struct sockaddr_in saddr;
2083
2084 if (parse_host_port(&saddr, host_str) < 0)
2085 return -1;
2086
2087 fd = socket(PF_INET, SOCK_STREAM, 0);
2088 if (fd < 0) {
2089 perror("socket");
2090 return -1;
2091 }
2092 socket_set_nonblock(fd);
2093
2094 connected = 0;
2095 for(;;) {
2096 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2097 if (ret < 0) {
2098 err = socket_error();
2099 if (err == EINTR || err == EWOULDBLOCK) {
2100 } else if (err == EINPROGRESS) {
2101 break;
2102#ifdef _WIN32
2103 } else if (err == WSAEALREADY) {
2104 break;
2105#endif
2106 } else {
2107 perror("connect");
2108 closesocket(fd);
2109 return -1;
2110 }
2111 } else {
2112 connected = 1;
2113 break;
2114 }
2115 }
7a9f6e4a 2116 s = net_socket_fd_init(vlan, model, name, fd, connected);
63a01ef8
AL		 2117 if (!s)
2118 return -1;
2119 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2120 "socket: connect to %s:%d",
2121 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2122 return 0;
2123}
2124
7a9f6e4a
AL		 2125static int net_socket_mcast_init(VLANState *vlan,
2126 const char *model,
2127 const char *name,
bf38c1a0 2128 const char *host_str)
63a01ef8
AL		 2129{
2130 NetSocketState *s;
2131 int fd;
2132 struct sockaddr_in saddr;
2133
2134 if (parse_host_port(&saddr, host_str) < 0)
2135 return -1;
2136
2137
2138 fd = net_socket_mcast_create(&saddr);
2139 if (fd < 0)
2140 return -1;
2141
7a9f6e4a 2142 s = net_socket_fd_init(vlan, model, name, fd, 0);
63a01ef8
AL		 2143 if (!s)
2144 return -1;
2145
2146 s->dgram_dst = saddr;
2147
2148 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2149 "socket: mcast=%s:%d",
2150 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2151 return 0;
2152
2153}
2154
bb9ea79e
AL		 2155typedef struct DumpState {
2156 VLANClientState *pcap_vc;
2157 int fd;
2158 int pcap_caplen;
2159} DumpState;
2160
2161#define PCAP_MAGIC 0xa1b2c3d4
2162
2163struct pcap_file_hdr {
2164 uint32_t magic;
2165 uint16_t version_major;
2166 uint16_t version_minor;
2167 int32_t thiszone;
2168 uint32_t sigfigs;
2169 uint32_t snaplen;
2170 uint32_t linktype;
2171};
2172
2173struct pcap_sf_pkthdr {
2174 struct {
2175 int32_t tv_sec;
2176 int32_t tv_usec;
2177 } ts;
2178 uint32_t caplen;
2179 uint32_t len;
2180};
2181
4f1c942b 2182static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
bb9ea79e 2183{
e3f5ec2b 2184 DumpState *s = vc->opaque;
bb9ea79e
AL		 2185 struct pcap_sf_pkthdr hdr;
2186 int64_t ts;
2187 int caplen;
2188
2189 /* Early return in case of previous error. */
2190 if (s->fd < 0) {
4f1c942b 2191 return size;
bb9ea79e
AL		 2192 }
2193
37cb6fc3 2194 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
bb9ea79e
AL		 2195 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2196
37cb6fc3 2197 hdr.ts.tv_sec = ts / 1000000;
bb9ea79e
AL		 2198 hdr.ts.tv_usec = ts % 1000000;
2199 hdr.caplen = caplen;
2200 hdr.len = size;
2201 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2202 write(s->fd, buf, caplen) != caplen) {
2203 qemu_log("-net dump write error - stop dump\n");
2204 close(s->fd);
2205 s->fd = -1;
2206 }
4f1c942b
MM		 2207
2208 return size;
bb9ea79e
AL		 2209}
2210
2211static void net_dump_cleanup(VLANClientState *vc)
2212{
2213 DumpState *s = vc->opaque;
2214
2215 close(s->fd);
2216 qemu_free(s);
2217}
2218
10ae5a7a 2219static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
bb9ea79e
AL		 2220 const char *name, const char *filename, int len)
2221{
2222 struct pcap_file_hdr hdr;
2223 DumpState *s;
2224
2225 s = qemu_malloc(sizeof(DumpState));
2226
024431b3 2227 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
bb9ea79e 2228 if (s->fd < 0) {
10ae5a7a 2229 config_error(mon, "-net dump: can't open %s\n", filename);
bb9ea79e
AL		 2230 return -1;
2231 }
2232
2233 s->pcap_caplen = len;
2234
2235 hdr.magic = PCAP_MAGIC;
2236 hdr.version_major = 2;
2237 hdr.version_minor = 4;
2238 hdr.thiszone = 0;
2239 hdr.sigfigs = 0;
2240 hdr.snaplen = s->pcap_caplen;
2241 hdr.linktype = 1;
2242
2243 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
10ae5a7a 2244 config_error(mon, "-net dump write error: %s\n", strerror(errno));
bb9ea79e
AL		 2245 close(s->fd);
2246 qemu_free(s);
2247 return -1;
2248 }
2249
463af534 2250 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
bb9ea79e
AL		 2251 net_dump_cleanup, s);
2252 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2253 "dump to %s (len=%d)", filename, len);
2254 return 0;
2255}
2256
63a01ef8
AL		 2257/* find or alloc a new VLAN */
2258VLANState *qemu_find_vlan(int id)
2259{
2260 VLANState **pvlan, *vlan;
2261 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2262 if (vlan->id == id)
2263 return vlan;
2264 }
2265 vlan = qemu_mallocz(sizeof(VLANState));
63a01ef8
AL		 2266 vlan->id = id;
2267 vlan->next = NULL;
2268 pvlan = &first_vlan;
2269 while (*pvlan != NULL)
2270 pvlan = &(*pvlan)->next;
2271 *pvlan = vlan;
2272 return vlan;
2273}
2274
7697079b
AL		 2275static int nic_get_free_idx(void)
2276{
2277 int index;
2278
2279 for (index = 0; index < MAX_NICS; index++)
2280 if (!nd_table[index].used)
2281 return index;
2282 return -1;
2283}
2284
d07f22c5
AL		 2285void qemu_check_nic_model(NICInfo *nd, const char *model)
2286{
2287 const char *models[2];
2288
2289 models[0] = model;
2290 models[1] = NULL;
2291
2292 qemu_check_nic_model_list(nd, models, model);
2293}
2294
2295void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2296 const char *default_model)
2297{
2298 int i, exit_status = 0;
2299
2300 if (!nd->model)
2301 nd->model = strdup(default_model);
2302
2303 if (strcmp(nd->model, "?") != 0) {
2304 for (i = 0 ; models[i]; i++)
2305 if (strcmp(nd->model, models[i]) == 0)
2306 return;
2307
2308 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2309 exit_status = 1;
2310 }
2311
2312 fprintf(stderr, "qemu: Supported NIC models: ");
2313 for (i = 0 ; models[i]; i++)
2314 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2315
2316 exit(exit_status);
2317}
2318
10ae5a7a 2319int net_client_init(Monitor *mon, const char *device, const char *p)
63a01ef8
AL		 2320{
2321 char buf[1024];
2322 int vlan_id, ret;
2323 VLANState *vlan;
7a9f6e4a 2324 char *name = NULL;
63a01ef8
AL		 2325
2326 vlan_id = 0;
2327 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2328 vlan_id = strtol(buf, NULL, 0);
2329 }
2330 vlan = qemu_find_vlan(vlan_id);
9036de1a 2331
7a9f6e4a 2332 if (get_param_value(buf, sizeof(buf), "name", p)) {
10ae5a7a 2333 name = qemu_strdup(buf);
7a9f6e4a 2334 }
63a01ef8 2335 if (!strcmp(device, "nic")) {
8e4416af 2336 static const char * const nic_params[] = {
ffe6370c 2337 "vlan", "name", "macaddr", "model", "addr", "vectors", NULL
8e4416af 2338 };
63a01ef8
AL		 2339 NICInfo *nd;
2340 uint8_t *macaddr;
7697079b 2341 int idx = nic_get_free_idx();
63a01ef8 2342
0aa7a205 2343 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
10ae5a7a
JK		 2344 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2345 ret = -1;
2346 goto out;
8e4416af 2347 }
7697079b 2348 if (idx == -1 || nb_nics >= MAX_NICS) {
10ae5a7a 2349 config_error(mon, "Too Many NICs\n");
771f1339
AL		 2350 ret = -1;
2351 goto out;
63a01ef8 2352 }
7697079b 2353 nd = &nd_table[idx];
63a01ef8
AL		 2354 macaddr = nd->macaddr;
2355 macaddr[0] = 0x52;
2356 macaddr[1] = 0x54;
2357 macaddr[2] = 0x00;
2358 macaddr[3] = 0x12;
2359 macaddr[4] = 0x34;
7697079b 2360 macaddr[5] = 0x56 + idx;
63a01ef8
AL		 2361
2362 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2363 if (parse_macaddr(macaddr, buf) < 0) {
10ae5a7a 2364 config_error(mon, "invalid syntax for ethernet address\n");
771f1339
AL		 2365 ret = -1;
2366 goto out;
63a01ef8
AL		 2367 }
2368 }
2369 if (get_param_value(buf, sizeof(buf), "model", p)) {
2370 nd->model = strdup(buf);
2371 }
5607c388
MA		 2372 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2373 nd->devaddr = strdup(buf);
2374 }
ffe6370c
MT		 2375 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2376 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2377 char *endptr;
2378 long vectors = strtol(buf, &endptr, 0);
2379 if (*endptr) {
2380 config_error(mon, "invalid syntax for # of vectors\n");
2381 ret = -1;
2382 goto out;
2383 }
2384 if (vectors < 0 || vectors > 0x7ffffff) {
2385 config_error(mon, "invalid # of vectors\n");
2386 ret = -1;
2387 goto out;
2388 }
2389 nd->nvectors = vectors;
2390 }
63a01ef8 2391 nd->vlan = vlan;
7a9f6e4a 2392 nd->name = name;
7697079b 2393 nd->used = 1;
7a9f6e4a 2394 name = NULL;
63a01ef8
AL		 2395 nb_nics++;
2396 vlan->nb_guest_devs++;
4d73cd3b 2397 ret = idx;
63a01ef8
AL		 2398 } else
2399 if (!strcmp(device, "none")) {
8e4416af 2400 if (*p != '\0') {
10ae5a7a
JK		 2401 config_error(mon, "'none' takes no parameters\n");
2402 ret = -1;
2403 goto out;
8e4416af 2404 }
63a01ef8
AL		 2405 /* does nothing. It is needed to signal that no network cards
2406 are wanted */
2407 ret = 0;
2408 } else
2409#ifdef CONFIG_SLIRP
2410 if (!strcmp(device, "user")) {
8e4416af 2411 static const char * const slirp_params[] = {
c92ef6a2
JK		 2412 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2413 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2414 "hostfwd", "guestfwd", NULL
8e4416af 2415 };
ad196a9d 2416 struct slirp_config_str *config;
c92ef6a2
JK		 2417 int restricted = 0;
2418 char *vnet = NULL;
2419 char *vhost = NULL;
2420 char *vhostname = NULL;
ad196a9d
JK		 2421 char *tftp_export = NULL;
2422 char *bootfile = NULL;
c92ef6a2
JK		 2423 char *vdhcp_start = NULL;
2424 char *vnamesrv = NULL;
ad196a9d 2425 char *smb_export = NULL;
c92ef6a2 2426 char *vsmbsrv = NULL;
ad196a9d 2427 const char *q;
b8e8af38 2428
0aa7a205 2429 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
10ae5a7a
JK		 2430 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2431 ret = -1;
2432 goto out;
8e4416af 2433 }
c92ef6a2
JK		 2434 if (get_param_value(buf, sizeof(buf), "ip", p)) {
2435 /* emulate legacy parameter */
2436 vnet = qemu_malloc(strlen(buf) + strlen("/24") + 1);
2437 strcpy(vnet, buf);
2438 strcat(vnet, "/24");
2439 }
2440 if (get_param_value(buf, sizeof(buf), "net", p)) {
2441 vnet = qemu_strdup(buf);
2442 }
2443 if (get_param_value(buf, sizeof(buf), "host", p)) {
2444 vhost = qemu_strdup(buf);
2445 }
63a01ef8 2446 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
c92ef6a2 2447 vhostname = qemu_strdup(buf);
63a01ef8 2448 }
49ec9b40 2449 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
b8e8af38 2450 restricted = (buf[0] == 'y') ? 1 : 0;
49ec9b40 2451 }
c92ef6a2
JK		 2452 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2453 vdhcp_start = qemu_strdup(buf);
2454 }
2455 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2456 vnamesrv = qemu_strdup(buf);
49ec9b40 2457 }
ad196a9d
JK		 2458 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2459 tftp_export = qemu_strdup(buf);
2460 }
2461 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2462 bootfile = qemu_strdup(buf);
2463 }
2464 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2465 smb_export = qemu_strdup(buf);
c92ef6a2
JK		 2466 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2467 vsmbsrv = qemu_strdup(buf);
2468 }
ad196a9d
JK		 2469 }
2470 q = p;
2471 while (1) {
2472 config = qemu_malloc(sizeof(*config));
2473 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2474 "hostfwd", &q)) {
ad196a9d
JK		 2475 break;
2476 }
c92ef6a2 2477 config->flags = SLIRP_CFG_HOSTFWD;
ad196a9d
JK		 2478 config->next = slirp_configs;
2479 slirp_configs = config;
2480 config = NULL;
2481 }
2482 q = p;
2483 while (1) {
2484 config = qemu_malloc(sizeof(*config));
2485 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2486 "guestfwd", &q)) {
ad196a9d
JK		 2487 break;
2488 }
2489 config->flags = 0;
2490 config->next = slirp_configs;
2491 slirp_configs = config;
2492 config = NULL;
2493 }
2494 qemu_free(config);
63a01ef8 2495 vlan->nb_host_devs++;
c92ef6a2
JK		 2496 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2497 vhostname, tftp_export, bootfile, vdhcp_start,
2498 vnamesrv, smb_export, vsmbsrv);
2499 qemu_free(vnet);
2500 qemu_free(vhost);
2501 qemu_free(vhostname);
ad196a9d
JK		 2502 qemu_free(tftp_export);
2503 qemu_free(bootfile);
c92ef6a2
JK		 2504 qemu_free(vdhcp_start);
2505 qemu_free(vnamesrv);
ad196a9d 2506 qemu_free(smb_export);
c92ef6a2 2507 qemu_free(vsmbsrv);
8ca9217d 2508 } else if (!strcmp(device, "channel")) {
ad196a9d
JK		 2509 if (!slirp_inited) {
2510 struct slirp_config_str *config;
2511
2512 config = qemu_malloc(sizeof(*config));
2513 pstrcpy(config->str, sizeof(config->str), p);
c92ef6a2 2514 config->flags = SLIRP_CFG_LEGACY;
ad196a9d
JK		 2515 config->next = slirp_configs;
2516 slirp_configs = config;
2517 } else {
c92ef6a2 2518 slirp_guestfwd(mon, p, 1);
8ca9217d 2519 }
8ca9217d 2520 ret = 0;
63a01ef8
AL		 2521 } else
2522#endif
2523#ifdef _WIN32
2524 if (!strcmp(device, "tap")) {
8e4416af
AL		 2525 static const char * const tap_params[] = {
2526 "vlan", "name", "ifname", NULL
2527 };
63a01ef8 2528 char ifname[64];
8e4416af 2529
0aa7a205 2530 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
10ae5a7a
JK		 2531 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2532 ret = -1;
2533 goto out;
8e4416af 2534 }
63a01ef8 2535 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
10ae5a7a 2536 config_error(mon, "tap: no interface name\n");
771f1339
AL		 2537 ret = -1;
2538 goto out;
63a01ef8
AL		 2539 }
2540 vlan->nb_host_devs++;
7a9f6e4a 2541 ret = tap_win32_init(vlan, device, name, ifname);
63a01ef8 2542 } else
b29fe3ed 2543#elif defined (_AIX)
63a01ef8
AL		 2544#else
2545 if (!strcmp(device, "tap")) {
0aa7a205 2546 char ifname[64], chkbuf[64];
63a01ef8 2547 char setup_script[1024], down_script[1024];
4a77b25e 2548 TAPState *s;
63a01ef8
AL		 2549 int fd;
2550 vlan->nb_host_devs++;
2551 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2552 static const char * const fd_params[] = {
2553 "vlan", "name", "fd", "sndbuf", NULL
2554 };
0aa7a205 2555 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a
JK		 2556 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2557 ret = -1;
2558 goto out;
8e4416af 2559 }
63a01ef8
AL		 2560 fd = strtol(buf, NULL, 0);
2561 fcntl(fd, F_SETFL, O_NONBLOCK);
4a77b25e 2562 s = net_tap_fd_init(vlan, device, name, fd);
63a01ef8 2563 } else {
8e4416af 2564 static const char * const tap_params[] = {
0df0ff6d 2565 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
8e4416af 2566 };
0aa7a205 2567 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
10ae5a7a
JK		 2568 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2569 ret = -1;
2570 goto out;
8e4416af 2571 }
63a01ef8
AL		 2572 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2573 ifname[0] = '\0';
2574 }
2575 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2576 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2577 }
2578 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2579 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2580 }
4a77b25e
MM		 2581 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2582 }
2583 if (s != NULL) {
0df0ff6d
MM		 2584 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
2585 tap_set_sndbuf(s, atoi(buf), mon);
2586 }
4a77b25e
MM		 2587 ret = 0;
2588 } else {
2589 ret = -1;
63a01ef8
AL		 2590 }
2591 } else
2592#endif
2593 if (!strcmp(device, "socket")) {
0aa7a205 2594 char chkbuf[64];
63a01ef8 2595 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2596 static const char * const fd_params[] = {
2597 "vlan", "name", "fd", NULL
2598 };
63a01ef8 2599 int fd;
0aa7a205 2600 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a
JK		 2601 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2602 ret = -1;
2603 goto out;
8e4416af 2604 }
63a01ef8
AL		 2605 fd = strtol(buf, NULL, 0);
2606 ret = -1;
7a9f6e4a 2607 if (net_socket_fd_init(vlan, device, name, fd, 1))
63a01ef8
AL		 2608 ret = 0;
2609 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
8e4416af
AL		 2610 static const char * const listen_params[] = {
2611 "vlan", "name", "listen", NULL
2612 };
0aa7a205 2613 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
10ae5a7a
JK		 2614 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2615 ret = -1;
2616 goto out;
8e4416af 2617 }
7a9f6e4a 2618 ret = net_socket_listen_init(vlan, device, name, buf);
63a01ef8 2619 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
8e4416af
AL		 2620 static const char * const connect_params[] = {
2621 "vlan", "name", "connect", NULL
2622 };
0aa7a205 2623 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
10ae5a7a
JK		 2624 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2625 ret = -1;
2626 goto out;
8e4416af 2627 }
7a9f6e4a 2628 ret = net_socket_connect_init(vlan, device, name, buf);
63a01ef8 2629 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
8e4416af
AL		 2630 static const char * const mcast_params[] = {
2631 "vlan", "name", "mcast", NULL
2632 };
0aa7a205 2633 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
10ae5a7a
JK		 2634 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2635 ret = -1;
2636 goto out;
8e4416af 2637 }
7a9f6e4a 2638 ret = net_socket_mcast_init(vlan, device, name, buf);
63a01ef8 2639 } else {
10ae5a7a 2640 config_error(mon, "Unknown socket options: %s\n", p);
771f1339
AL		 2641 ret = -1;
2642 goto out;
63a01ef8
AL		 2643 }
2644 vlan->nb_host_devs++;
2645 } else
2646#ifdef CONFIG_VDE
2647 if (!strcmp(device, "vde")) {
8e4416af
AL		 2648 static const char * const vde_params[] = {
2649 "vlan", "name", "sock", "port", "group", "mode", NULL
2650 };
63a01ef8
AL		 2651 char vde_sock[1024], vde_group[512];
2652 int vde_port, vde_mode;
8e4416af 2653
0aa7a205 2654 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
10ae5a7a
JK		 2655 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2656 ret = -1;
2657 goto out;
8e4416af 2658 }
63a01ef8
AL		 2659 vlan->nb_host_devs++;
2660 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2661 vde_sock[0] = '\0';
2662 }
2663 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2664 vde_port = strtol(buf, NULL, 10);
2665 } else {
2666 vde_port = 0;
2667 }
2668 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2669 vde_group[0] = '\0';
2670 }
2671 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2672 vde_mode = strtol(buf, NULL, 8);
2673 } else {
2674 vde_mode = 0700;
2675 }
7a9f6e4a 2676 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
63a01ef8
AL		 2677 } else
2678#endif
bb9ea79e
AL		 2679 if (!strcmp(device, "dump")) {
2680 int len = 65536;
2681
2682 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2683 len = strtol(buf, NULL, 0);
2684 }
2685 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2686 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2687 }
10ae5a7a 2688 ret = net_dump_init(mon, vlan, device, name, buf, len);
bb9ea79e 2689 } else {
10ae5a7a 2690 config_error(mon, "Unknown network device: %s\n", device);
771f1339
AL		 2691 ret = -1;
2692 goto out;
63a01ef8
AL		 2693 }
2694 if (ret < 0) {
10ae5a7a 2695 config_error(mon, "Could not initialize device '%s'\n", device);
63a01ef8 2696 }
771f1339 2697out:
10ae5a7a 2698 qemu_free(name);
63a01ef8
AL		 2699 return ret;
2700}
2701
8b13c4a7
AL		 2702void net_client_uninit(NICInfo *nd)
2703{
2704 nd->vlan->nb_guest_devs--;
2705 nb_nics--;
2706 nd->used = 0;
2707 free((void *)nd->model);
2708}
2709
6f338c34
AL		 2710static int net_host_check_device(const char *device)
2711{
2712 int i;
bb9ea79e 2713 const char *valid_param_list[] = { "tap", "socket", "dump"
6f338c34
AL		 2714#ifdef CONFIG_SLIRP
2715 ,"user"
2716#endif
2717#ifdef CONFIG_VDE
2718 ,"vde"
2719#endif
2720 };
2721 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2722 if (!strncmp(valid_param_list[i], device,
2723 strlen(valid_param_list[i])))
2724 return 1;
2725 }
2726
2727 return 0;
2728}
2729
376253ec 2730void net_host_device_add(Monitor *mon, const char *device, const char *opts)
6f338c34
AL		 2731{
2732 if (!net_host_check_device(device)) {
376253ec 2733 monitor_printf(mon, "invalid host network device %s\n", device);
6f338c34
AL		 2734 return;
2735 }
10ae5a7a 2736 if (net_client_init(mon, device, opts ? opts : "") < 0) {
5c8be678
AL		 2737 monitor_printf(mon, "adding host network device %s failed\n", device);
2738 }
6f338c34
AL		 2739}
2740
376253ec 2741void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
6f338c34
AL		 2742{
2743 VLANState *vlan;
2744 VLANClientState *vc;
2745
6f338c34 2746 vlan = qemu_find_vlan(vlan_id);
6f338c34 2747
e8f1f9db
AL		 2748 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
2749 if (!strcmp(vc->name, device)) {
6f338c34 2750 break;
e8f1f9db
AL		 2751 }
2752 }
6f338c34
AL		 2753
2754 if (!vc) {
376253ec 2755 monitor_printf(mon, "can't find device %s\n", device);
6f338c34
AL		 2756 return;
2757 }
e8f1f9db
AL		 2758 if (!net_host_check_device(vc->model)) {
2759 monitor_printf(mon, "invalid host network device %s\n", device);
2760 return;
2761 }
6f338c34
AL		 2762 qemu_del_vlan_client(vc);
2763}
2764
63a01ef8
AL		 2765int net_client_parse(const char *str)
2766{
2767 const char *p;
2768 char *q;
2769 char device[64];
2770
2771 p = str;
2772 q = device;
2773 while (*p != '\0' && *p != ',') {
2774 if ((q - device) < sizeof(device) - 1)
2775 *q++ = *p;
2776 p++;
2777 }
2778 *q = '\0';
2779 if (*p == ',')
2780 p++;
2781
10ae5a7a 2782 return net_client_init(NULL, device, p);
63a01ef8
AL		 2783}
2784
406c8df3
GC		 2785void net_set_boot_mask(int net_boot_mask)
2786{
2787 int i;
2788
2789 /* Only the first four NICs may be bootable */
2790 net_boot_mask = net_boot_mask & 0xF;
2791
2792 for (i = 0; i < nb_nics; i++) {
2793 if (net_boot_mask & (1 << i)) {
2794 nd_table[i].bootable = 1;
2795 net_boot_mask &= ~(1 << i);
2796 }
2797 }
2798
2799 if (net_boot_mask) {
2800 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2801 exit(1);
2802 }
2803}
2804
376253ec 2805void do_info_network(Monitor *mon)
63a01ef8
AL		 2806{
2807 VLANState *vlan;
2808 VLANClientState *vc;
2809
2810 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
376253ec 2811 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
63a01ef8 2812 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
376253ec 2813 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
63a01ef8
AL		 2814 }
2815}
2816
376253ec 2817int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
436e5e53
AL		 2818{
2819 VLANState *vlan;
2820 VLANClientState *vc = NULL;
2821
2822 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2823 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2824 if (strcmp(vc->name, name) == 0)
dd5de373
EI		 2825 goto done;
2826done:
436e5e53
AL		 2827
2828 if (!vc) {
376253ec 2829 monitor_printf(mon, "could not find network device '%s'", name);
436e5e53
AL		 2830 return 0;
2831 }
2832
2833 if (strcmp(up_or_down, "up") == 0)
2834 vc->link_down = 0;
2835 else if (strcmp(up_or_down, "down") == 0)
2836 vc->link_down = 1;
2837 else
376253ec
AL		 2838 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2839 "valid\n", up_or_down);
436e5e53 2840
34b25ca7
AL		 2841 if (vc->link_status_changed)
2842 vc->link_status_changed(vc);
2843
436e5e53
AL		 2844 return 1;
2845}
2846
63a01ef8
AL		 2847void net_cleanup(void)
2848{
2849 VLANState *vlan;
2850
63a01ef8
AL		 2851 /* close network clients */
2852 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
b946a153 2853 VLANClientState *vc = vlan->first_client;
63a01ef8 2854
b946a153
AL		 2855 while (vc) {
2856 VLANClientState *next = vc->next;
63a01ef8 2857
b946a153
AL		 2858 qemu_del_vlan_client(vc);
2859
2860 vc = next;
63a01ef8
AL		 2861 }
2862 }
63a01ef8
AL		 2863}
2864
2865void net_client_check(void)
2866{
2867 VLANState *vlan;
2868
2869 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2870 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2871 continue;
2872 if (vlan->nb_guest_devs == 0)
2873 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2874 if (vlan->nb_host_devs == 0)
2875 fprintf(stderr,
2876 "Warning: vlan %d is not connected to host network\n",
2877 vlan->id);
2878 }
2879}
Qemu copy for testing