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Don't exit() in config_error()
[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
71e72a19 32/* Needed early for CONFIG_BSD etc. */
d40cdb10
BS		 33#include "config-host.h"
34
63a01ef8
AL		 35#ifndef _WIN32
36#include <sys/times.h>
37#include <sys/wait.h>
38#include <termios.h>
39#include <sys/mman.h>
40#include <sys/ioctl.h>
24646c7e 41#include <sys/resource.h>
63a01ef8
AL		 42#include <sys/socket.h>
43#include <netinet/in.h>
24646c7e
BS		 44#include <net/if.h>
45#ifdef __NetBSD__
46#include <net/if_tap.h>
47#endif
48#ifdef __linux__
49#include <linux/if_tun.h>
50#endif
51#include <arpa/inet.h>
63a01ef8
AL		 52#include <dirent.h>
53#include <netdb.h>
54#include <sys/select.h>
71e72a19 55#ifdef CONFIG_BSD
63a01ef8 56#include <sys/stat.h>
c5e97233 57#if defined(__FreeBSD__) || defined(__DragonFly__)
63a01ef8 58#include <libutil.h>
24646c7e
BS		 59#else
60#include <util.h>
63a01ef8
AL		 61#endif
62#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
63#include <freebsd/stdlib.h>
64#else
65#ifdef __linux__
63a01ef8
AL		 66#include <pty.h>
67#include <malloc.h>
68#include <linux/rtc.h>
69
70/* For the benefit of older linux systems which don't supply it,
71 we use a local copy of hpet.h. */
72/* #include <linux/hpet.h> */
73#include "hpet.h"
74
75#include <linux/ppdev.h>
76#include <linux/parport.h>
77#endif
78#ifdef __sun__
79#include <sys/stat.h>
80#include <sys/ethernet.h>
81#include <sys/sockio.h>
82#include <netinet/arp.h>
83#include <netinet/in.h>
84#include <netinet/in_systm.h>
85#include <netinet/ip.h>
86#include <netinet/ip_icmp.h> // must come after ip.h
87#include <netinet/udp.h>
88#include <netinet/tcp.h>
89#include <net/if.h>
90#include <syslog.h>
91#include <stropts.h>
92#endif
93#endif
94#endif
95
63a01ef8
AL		 96#if defined(__OpenBSD__)
97#include <util.h>
98#endif
99
100#if defined(CONFIG_VDE)
101#include <libvdeplug.h>
102#endif
103
511d2b14
BS		 104#include "qemu-common.h"
105#include "net.h"
106#include "monitor.h"
107#include "sysemu.h"
108#include "qemu-timer.h"
109#include "qemu-char.h"
110#include "audio/audio.h"
111#include "qemu_socket.h"
bb9ea79e 112#include "qemu-log.h"
511d2b14 113
d918f23e 114#include "slirp/libslirp.h"
72cf2d4f 115#include "qemu-queue.h"
511d2b14
BS		 116
117
63a01ef8
AL		 118static VLANState *first_vlan;
119
120/***********************************************************/
121/* network device redirectors */
122
123#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
124static void hex_dump(FILE *f, const uint8_t *buf, int size)
125{
126 int len, i, j, c;
127
128 for(i=0;i<size;i+=16) {
129 len = size - i;
130 if (len > 16)
131 len = 16;
132 fprintf(f, "%08x ", i);
133 for(j=0;j<16;j++) {
134 if (j < len)
135 fprintf(f, " %02x", buf[i+j]);
136 else
137 fprintf(f, " ");
138 }
139 fprintf(f, " ");
140 for(j=0;j<len;j++) {
141 c = buf[i+j];
142 if (c < ' ' || c > '~')
143 c = '.';
144 fprintf(f, "%c", c);
145 }
146 fprintf(f, "\n");
147 }
148}
149#endif
150
151static int parse_macaddr(uint8_t *macaddr, const char *p)
152{
153 int i;
154 char *last_char;
155 long int offset;
156
157 errno = 0;
158 offset = strtol(p, &last_char, 0);
159 if (0 == errno && '\0' == *last_char &&
160 offset >= 0 && offset <= 0xFFFFFF) {
161 macaddr[3] = (offset & 0xFF0000) >> 16;
162 macaddr[4] = (offset & 0xFF00) >> 8;
163 macaddr[5] = offset & 0xFF;
164 return 0;
165 } else {
166 for(i = 0; i < 6; i++) {
167 macaddr[i] = strtol(p, (char **)&p, 16);
168 if (i == 5) {
169 if (*p != '\0')
170 return -1;
171 } else {
172 if (*p != ':' && *p != '-')
173 return -1;
174 p++;
175 }
176 }
177 return 0;
178 }
179
180 return -1;
181}
182
183static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
184{
185 const char *p, *p1;
186 int len;
187 p = *pp;
188 p1 = strchr(p, sep);
189 if (!p1)
190 return -1;
191 len = p1 - p;
192 p1++;
193 if (buf_size > 0) {
194 if (len > buf_size - 1)
195 len = buf_size - 1;
196 memcpy(buf, p, len);
197 buf[len] = '\0';
198 }
199 *pp = p1;
200 return 0;
201}
202
203int parse_host_src_port(struct sockaddr_in *haddr,
204 struct sockaddr_in *saddr,
205 const char *input_str)
206{
207 char *str = strdup(input_str);
208 char *host_str = str;
209 char *src_str;
210 const char *src_str2;
211 char *ptr;
212
213 /*
214 * Chop off any extra arguments at the end of the string which
215 * would start with a comma, then fill in the src port information
216 * if it was provided else use the "any address" and "any port".
217 */
218 if ((ptr = strchr(str,',')))
219 *ptr = '\0';
220
221 if ((src_str = strchr(input_str,'@'))) {
222 *src_str = '\0';
223 src_str++;
224 }
225
226 if (parse_host_port(haddr, host_str) < 0)
227 goto fail;
228
229 src_str2 = src_str;
230 if (!src_str || *src_str == '\0')
231 src_str2 = ":0";
232
233 if (parse_host_port(saddr, src_str2) < 0)
234 goto fail;
235
236 free(str);
237 return(0);
238
239fail:
240 free(str);
241 return -1;
242}
243
244int parse_host_port(struct sockaddr_in *saddr, const char *str)
245{
246 char buf[512];
247 struct hostent *he;
248 const char *p, *r;
249 int port;
250
251 p = str;
252 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
253 return -1;
254 saddr->sin_family = AF_INET;
255 if (buf[0] == '\0') {
256 saddr->sin_addr.s_addr = 0;
257 } else {
cd390083 258 if (qemu_isdigit(buf[0])) {
63a01ef8
AL		 259 if (!inet_aton(buf, &saddr->sin_addr))
260 return -1;
261 } else {
262 if ((he = gethostbyname(buf)) == NULL)
263 return - 1;
264 saddr->sin_addr = *(struct in_addr *)he->h_addr;
265 }
266 }
267 port = strtol(p, (char **)&r, 0);
268 if (r == p)
269 return -1;
270 saddr->sin_port = htons(port);
271 return 0;
272}
273
7cb7434b
AL		 274void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
275{
276 snprintf(vc->info_str, sizeof(vc->info_str),
4dda4063
AL		 277 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
278 vc->model,
7cb7434b
AL		 279 macaddr[0], macaddr[1], macaddr[2],
280 macaddr[3], macaddr[4], macaddr[5]);
281}
282
676cff29
AL		 283static char *assign_name(VLANClientState *vc1, const char *model)
284{
285 VLANState *vlan;
286 char buf[256];
287 int id = 0;
288
289 for (vlan = first_vlan; vlan; vlan = vlan->next) {
290 VLANClientState *vc;
291
292 for (vc = vlan->first_client; vc; vc = vc->next)
293 if (vc != vc1 && strcmp(vc->model, model) == 0)
294 id++;
295 }
296
297 snprintf(buf, sizeof(buf), "%s.%d", model, id);
298
02374aa0 299 return qemu_strdup(buf);
676cff29
AL		 300}
301
63a01ef8 302VLANClientState *qemu_new_vlan_client(VLANState *vlan,
bf38c1a0 303 const char *model,
7a9f6e4a 304 const char *name,
cda9046b
MM		 305 NetCanReceive *can_receive,
306 NetReceive *receive,
307 NetReceiveIOV *receive_iov,
b946a153 308 NetCleanup *cleanup,
63a01ef8
AL		 309 void *opaque)
310{
311 VLANClientState *vc, **pvc;
312 vc = qemu_mallocz(sizeof(VLANClientState));
02374aa0 313 vc->model = qemu_strdup(model);
7a9f6e4a 314 if (name)
02374aa0 315 vc->name = qemu_strdup(name);
7a9f6e4a
AL		 316 else
317 vc->name = assign_name(vc, model);
cda9046b
MM		 318 vc->can_receive = can_receive;
319 vc->receive = receive;
320 vc->receive_iov = receive_iov;
b946a153 321 vc->cleanup = cleanup;
63a01ef8
AL		 322 vc->opaque = opaque;
323 vc->vlan = vlan;
324
325 vc->next = NULL;
326 pvc = &vlan->first_client;
327 while (*pvc != NULL)
328 pvc = &(*pvc)->next;
329 *pvc = vc;
330 return vc;
331}
332
333void qemu_del_vlan_client(VLANClientState *vc)
334{
335 VLANClientState **pvc = &vc->vlan->first_client;
336
337 while (*pvc != NULL)
338 if (*pvc == vc) {
339 *pvc = vc->next;
b946a153
AL		 340 if (vc->cleanup) {
341 vc->cleanup(vc);
342 }
02374aa0
MM		 343 qemu_free(vc->name);
344 qemu_free(vc->model);
dad35419 345 qemu_free(vc);
63a01ef8
AL		 346 break;
347 } else
348 pvc = &(*pvc)->next;
349}
350
8b13c4a7
AL		 351VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
352{
353 VLANClientState **pvc = &vlan->first_client;
354
355 while (*pvc != NULL)
356 if ((*pvc)->opaque == opaque)
357 return *pvc;
358 else
359 pvc = &(*pvc)->next;
360
361 return NULL;
362}
363
1a609520
JK		 364static VLANClientState *
365qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
366 const char *client_str)
367{
368 VLANState *vlan;
369 VLANClientState *vc;
370
371 vlan = qemu_find_vlan(vlan_id, 0);
372 if (!vlan) {
373 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
374 return NULL;
375 }
376
377 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
378 if (!strcmp(vc->name, client_str)) {
379 break;
380 }
381 }
382 if (!vc) {
383 monitor_printf(mon, "can't find device %s on VLAN %d\n",
384 client_str, vlan_id);
385 }
386
387 return vc;
388}
389
2e1e0641 390int qemu_can_send_packet(VLANClientState *sender)
63a01ef8 391{
2e1e0641 392 VLANState *vlan = sender->vlan;
63a01ef8
AL		 393 VLANClientState *vc;
394
2e1e0641
MM		 395 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
396 if (vc == sender) {
397 continue;
398 }
399
cda9046b 400 /* no can_receive() handler, they can always receive */
e3f5ec2b 401 if (!vc->can_receive || vc->can_receive(vc)) {
2e1e0641 402 return 1;
63a01ef8
AL		 403 }
404 }
405 return 0;
406}
407
3e021d40 408static int
764a4d1d 409qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
63a01ef8 410{
63a01ef8 411 VLANClientState *vc;
3e021d40 412 int ret = -1;
63a01ef8 413
e94667b9
MM		 414 sender->vlan->delivering = 1;
415
764a4d1d 416 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
3e021d40
MM		 417 ssize_t len;
418
419 if (vc == sender) {
420 continue;
764a4d1d 421 }
3e021d40
MM		 422
423 if (vc->link_down) {
424 ret = size;
425 continue;
426 }
427
428 len = vc->receive(vc, buf, size);
429
430 ret = (ret >= 0) ? ret : len;
764a4d1d 431 }
3e021d40 432
e94667b9
MM		 433 sender->vlan->delivering = 0;
434
3e021d40 435 return ret;
764a4d1d
AL		 436}
437
8cad5516
MM		 438void qemu_purge_queued_packets(VLANClientState *vc)
439{
9da43187 440 VLANPacket *packet, *next;
8cad5516 441
72cf2d4f 442 QTAILQ_FOREACH_SAFE(packet, &vc->vlan->send_queue, entry, next) {
8cad5516 443 if (packet->sender == vc) {
72cf2d4f 444 QTAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
8cad5516 445 qemu_free(packet);
8cad5516
MM		 446 }
447 }
448}
449
f3b6c7fc 450void qemu_flush_queued_packets(VLANClientState *vc)
e94667b9 451{
72cf2d4f 452 while (!QTAILQ_EMPTY(&vc->vlan->send_queue)) {
9da43187 453 VLANPacket *packet;
f3b6c7fc
MM		 454 int ret;
455
72cf2d4f
BS		 456 packet = QTAILQ_FIRST(&vc->vlan->send_queue);
457 QTAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
f3b6c7fc
MM		 458
459 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
460 if (ret == 0 && packet->sent_cb != NULL) {
72cf2d4f 461 QTAILQ_INSERT_HEAD(&vc->vlan->send_queue, packet, entry);
f3b6c7fc
MM		 462 break;
463 }
464
465 if (packet->sent_cb)
783527a9 466 packet->sent_cb(packet->sender, ret);
f3b6c7fc 467
e94667b9
MM		 468 qemu_free(packet);
469 }
470}
471
f3b6c7fc
MM		 472static void qemu_enqueue_packet(VLANClientState *sender,
473 const uint8_t *buf, int size,
474 NetPacketSent *sent_cb)
e94667b9
MM		 475{
476 VLANPacket *packet;
477
478 packet = qemu_malloc(sizeof(VLANPacket) + size);
e94667b9
MM		 479 packet->sender = sender;
480 packet->size = size;
f3b6c7fc 481 packet->sent_cb = sent_cb;
e94667b9 482 memcpy(packet->data, buf, size);
9da43187 483
72cf2d4f 484 QTAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
e94667b9
MM		 485}
486
f3b6c7fc
MM		 487ssize_t qemu_send_packet_async(VLANClientState *sender,
488 const uint8_t *buf, int size,
489 NetPacketSent *sent_cb)
764a4d1d 490{
f3b6c7fc 491 int ret;
764a4d1d 492
f3b6c7fc
MM		 493 if (sender->link_down) {
494 return size;
495 }
436e5e53 496
63a01ef8 497#ifdef DEBUG_NET
f3b6c7fc 498 printf("vlan %d send:\n", sender->vlan->id);
63a01ef8
AL		 499 hex_dump(stdout, buf, size);
500#endif
f3b6c7fc
MM		 501
502 if (sender->vlan->delivering) {
503 qemu_enqueue_packet(sender, buf, size, NULL);
504 return size;
505 }
506
507 ret = qemu_deliver_packet(sender, buf, size);
508 if (ret == 0 && sent_cb != NULL) {
509 qemu_enqueue_packet(sender, buf, size, sent_cb);
510 return 0;
63a01ef8 511 }
e94667b9 512
f3b6c7fc
MM		 513 qemu_flush_queued_packets(sender);
514
515 return ret;
516}
517
518void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
519{
520 qemu_send_packet_async(vc, buf, size, NULL);
63a01ef8
AL		 521}
522
fbe78f4f
AL		 523static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
524 int iovcnt)
525{
526 uint8_t buffer[4096];
527 size_t offset = 0;
528 int i;
529
530 for (i = 0; i < iovcnt; i++) {
531 size_t len;
532
533 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
534 memcpy(buffer + offset, iov[i].iov_base, len);
535 offset += len;
536 }
537
f3b6c7fc 538 return vc->receive(vc, buffer, offset);
fbe78f4f
AL		 539}
540
e0e7877a
AL		 541static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
542{
543 size_t offset = 0;
544 int i;
545
546 for (i = 0; i < iovcnt; i++)
547 offset += iov[i].iov_len;
548 return offset;
549}
550
e94667b9
MM		 551static int qemu_deliver_packet_iov(VLANClientState *sender,
552 const struct iovec *iov, int iovcnt)
fbe78f4f 553{
fbe78f4f 554 VLANClientState *vc;
e94667b9
MM		 555 int ret = -1;
556
557 sender->vlan->delivering = 1;
558
559 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
560 ssize_t len;
561
562 if (vc == sender) {
563 continue;
564 }
565
566 if (vc->link_down) {
567 ret = calc_iov_length(iov, iovcnt);
568 continue;
569 }
570
571 if (vc->receive_iov) {
572 len = vc->receive_iov(vc, iov, iovcnt);
573 } else {
574 len = vc_sendv_compat(vc, iov, iovcnt);
575 }
576
577 ret = (ret >= 0) ? ret : len;
578 }
579
580 sender->vlan->delivering = 0;
581
582 return ret;
583}
584
585static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
f3b6c7fc
MM		 586 const struct iovec *iov, int iovcnt,
587 NetPacketSent *sent_cb)
e94667b9 588{
c27ff608 589 VLANPacket *packet;
e94667b9 590 size_t max_len = 0;
c27ff608 591 int i;
fbe78f4f 592
e94667b9 593 max_len = calc_iov_length(iov, iovcnt);
e0e7877a 594
e94667b9 595 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
e94667b9 596 packet->sender = sender;
f3b6c7fc 597 packet->sent_cb = sent_cb;
e94667b9 598 packet->size = 0;
c27ff608 599
e94667b9
MM		 600 for (i = 0; i < iovcnt; i++) {
601 size_t len = iov[i].iov_len;
c27ff608 602
e94667b9
MM		 603 memcpy(packet->data + packet->size, iov[i].iov_base, len);
604 packet->size += len;
605 }
fbe78f4f 606
72cf2d4f 607 QTAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
fbe78f4f 608
e94667b9
MM		 609 return packet->size;
610}
fbe78f4f 611
f3b6c7fc
MM		 612ssize_t qemu_sendv_packet_async(VLANClientState *sender,
613 const struct iovec *iov, int iovcnt,
614 NetPacketSent *sent_cb)
e94667b9
MM		 615{
616 int ret;
617
618 if (sender->link_down) {
619 return calc_iov_length(iov, iovcnt);
620 }
621
622 if (sender->vlan->delivering) {
f3b6c7fc 623 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
fbe78f4f
AL		 624 }
625
e94667b9 626 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
f3b6c7fc
MM		 627 if (ret == 0 && sent_cb != NULL) {
628 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
629 return 0;
630 }
e94667b9
MM		 631
632 qemu_flush_queued_packets(sender);
633
634 return ret;
fbe78f4f
AL		 635}
636
f3b6c7fc
MM		 637ssize_t
638qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
639{
640 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
641}
642
10ae5a7a
JK		 643static void config_error(Monitor *mon, const char *fmt, ...)
644{
645 va_list ap;
646
647 va_start(ap, fmt);
648 if (mon) {
649 monitor_vprintf(mon, fmt, ap);
650 } else {
651 fprintf(stderr, "qemu: ");
652 vfprintf(stderr, fmt, ap);
10ae5a7a
JK		 653 }
654 va_end(ap);
655}
656
63a01ef8
AL		 657#if defined(CONFIG_SLIRP)
658
659/* slirp network adapter */
660
c92ef6a2
JK		 661#define SLIRP_CFG_HOSTFWD 1
662#define SLIRP_CFG_LEGACY 2
ad196a9d 663
b8e8af38
JK		 664struct slirp_config_str {
665 struct slirp_config_str *next;
ad196a9d
JK		 666 int flags;
667 char str[1024];
c92ef6a2 668 int legacy_format;
b8e8af38
JK		 669};
670
9f8bd042 671typedef struct SlirpState {
72cf2d4f 672 QTAILQ_ENTRY(SlirpState) entry;
9f8bd042
JK		 673 VLANClientState *vc;
674 Slirp *slirp;
28432466
JK		 675#ifndef _WIN32
676 char smb_dir[128];
677#endif
9f8bd042
JK		 678} SlirpState;
679
ad196a9d
JK		 680static struct slirp_config_str *slirp_configs;
681const char *legacy_tftp_prefix;
682const char *legacy_bootp_filename;
72cf2d4f
BS		 683static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
684 QTAILQ_HEAD_INITIALIZER(slirp_stacks);
63a01ef8 685
0752706d
MA		 686static int slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
687 int legacy_format);
688static int slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
3c6a0580 689 int legacy_format);
ad196a9d 690
c5b76b38 691#ifndef _WIN32
ad196a9d
JK		 692static const char *legacy_smb_export;
693
0752706d
MA		 694static int slirp_smb(SlirpState *s, Monitor *mon, const char *exported_dir,
695 struct in_addr vserver_addr);
28432466
JK		 696static void slirp_smb_cleanup(SlirpState *s);
697#else
698static inline void slirp_smb_cleanup(SlirpState *s) { }
c5b76b38 699#endif
b8e8af38 700
9f8bd042 701int slirp_can_output(void *opaque)
63a01ef8 702{
9f8bd042
JK		 703 SlirpState *s = opaque;
704
705 return qemu_can_send_packet(s->vc);
63a01ef8
AL		 706}
707
9f8bd042 708void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
63a01ef8 709{
9f8bd042
JK		 710 SlirpState *s = opaque;
711
63a01ef8
AL		 712#ifdef DEBUG_SLIRP
713 printf("slirp output:\n");
714 hex_dump(stdout, pkt, pkt_len);
715#endif
9f8bd042 716 qemu_send_packet(s->vc, pkt, pkt_len);
63a01ef8
AL		 717}
718
4f1c942b 719static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 720{
9f8bd042
JK		 721 SlirpState *s = vc->opaque;
722
63a01ef8
AL		 723#ifdef DEBUG_SLIRP
724 printf("slirp input:\n");
725 hex_dump(stdout, buf, size);
726#endif
9f8bd042 727 slirp_input(s->slirp, buf, size);
4f1c942b 728 return size;
63a01ef8
AL		 729}
730
8d6249a7
AL		 731static void net_slirp_cleanup(VLANClientState *vc)
732{
ad0d8c4c
JK		 733 SlirpState *s = vc->opaque;
734
735 slirp_cleanup(s->slirp);
28432466 736 slirp_smb_cleanup(s);
72cf2d4f 737 QTAILQ_REMOVE(&slirp_stacks, s, entry);
ad0d8c4c 738 qemu_free(s);
8d6249a7
AL		 739}
740
ad196a9d 741static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
c92ef6a2
JK		 742 const char *name, int restricted,
743 const char *vnetwork, const char *vhost,
744 const char *vhostname, const char *tftp_export,
745 const char *bootfile, const char *vdhcp_start,
746 const char *vnameserver, const char *smb_export,
747 const char *vsmbserver)
63a01ef8 748{
ad0d8c4c 749 /* default settings according to historic slirp */
8389e7f4
AL		 750 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
751 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
ad0d8c4c
JK		 752 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
753 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
754 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
c92ef6a2 755#ifndef _WIN32
ad0d8c4c 756 struct in_addr smbsrv = { .s_addr = 0 };
c92ef6a2 757#endif
ad0d8c4c
JK		 758 SlirpState *s;
759 char buf[20];
760 uint32_t addr;
761 int shift;
762 char *end;
3a179c66 763 struct slirp_config_str *config;
ad0d8c4c
JK		 764
765 if (!tftp_export) {
766 tftp_export = legacy_tftp_prefix;
767 }
768 if (!bootfile) {
769 bootfile = legacy_bootp_filename;
770 }
c92ef6a2 771
ad0d8c4c
JK		 772 if (vnetwork) {
773 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
774 if (!inet_aton(vnetwork, &net)) {
775 return -1;
776 }
777 addr = ntohl(net.s_addr);
778 if (!(addr & 0x80000000)) {
779 mask.s_addr = htonl(0xff000000); /* class A */
780 } else if ((addr & 0xfff00000) == 0xac100000) {
781 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
782 } else if ((addr & 0xc0000000) == 0x80000000) {
783 mask.s_addr = htonl(0xffff0000); /* class B */
784 } else if ((addr & 0xffff0000) == 0xc0a80000) {
785 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
786 } else if ((addr & 0xffff0000) == 0xc6120000) {
787 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
788 } else if ((addr & 0xe0000000) == 0xe0000000) {
789 mask.s_addr = htonl(0xffffff00); /* class C */
c92ef6a2 790 } else {
ad0d8c4c
JK		 791 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
792 }
793 } else {
794 if (!inet_aton(buf, &net)) {
795 return -1;
796 }
797 shift = strtol(vnetwork, &end, 10);
798 if (*end != '\0') {
799 if (!inet_aton(vnetwork, &mask)) {
c92ef6a2 800 return -1;
c92ef6a2 801 }
ad0d8c4c
JK		 802 } else if (shift < 4 || shift > 32) {
803 return -1;
804 } else {
805 mask.s_addr = htonl(0xffffffff << (32 - shift));
c92ef6a2 806 }
c92ef6a2 807 }
ad0d8c4c
JK		 808 net.s_addr &= mask.s_addr;
809 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
810 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
811 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
812 }
c92ef6a2 813
ad0d8c4c
JK		 814 if (vhost && !inet_aton(vhost, &host)) {
815 return -1;
816 }
817 if ((host.s_addr & mask.s_addr) != net.s_addr) {
818 return -1;
819 }
c92ef6a2 820
ad0d8c4c
JK		 821 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
822 return -1;
823 }
824 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
825 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
826 return -1;
827 }
c92ef6a2 828
ad0d8c4c
JK		 829 if (vnameserver && !inet_aton(vnameserver, &dns)) {
830 return -1;
831 }
832 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
833 dns.s_addr == host.s_addr) {
834 return -1;
835 }
c92ef6a2
JK		 836
837#ifndef _WIN32
ad0d8c4c
JK		 838 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
839 return -1;
840 }
c92ef6a2
JK		 841#endif
842
ad0d8c4c
JK		 843 s = qemu_mallocz(sizeof(SlirpState));
844 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
845 tftp_export, bootfile, dhcp, dns, s);
72cf2d4f 846 QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
b8e8af38 847
3a179c66 848 for (config = slirp_configs; config; config = config->next) {
ad0d8c4c 849 if (config->flags & SLIRP_CFG_HOSTFWD) {
0752706d
MA		 850 if (slirp_hostfwd(s, mon, config->str,
851 config->flags & SLIRP_CFG_LEGACY) < 0)
852 return -1;
ad0d8c4c 853 } else {
0752706d
MA		 854 if (slirp_guestfwd(s, mon, config->str,
855 config->flags & SLIRP_CFG_LEGACY) < 0)
856 return -1;
b8e8af38 857 }
ad0d8c4c 858 }
b8e8af38 859#ifndef _WIN32
ad0d8c4c
JK		 860 if (!smb_export) {
861 smb_export = legacy_smb_export;
862 }
863 if (smb_export) {
0752706d
MA		 864 if (slirp_smb(s, mon, smb_export, smbsrv) < 0)
865 return -1;
63a01ef8 866 }
ad0d8c4c 867#endif
b8e8af38 868
9f8bd042
JK		 869 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
870 net_slirp_cleanup, s);
fc57bc57
JK		 871 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
872 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
63a01ef8
AL		 873 return 0;
874}
875
f13b572c
JK		 876static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
877 const char *stack)
878{
879 VLANClientState *vc;
880
881 if (vlan) {
882 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
883 if (!vc) {
884 return NULL;
885 }
886 if (strcmp(vc->model, "user")) {
887 monitor_printf(mon, "invalid device specified\n");
888 return NULL;
889 }
890 return vc->opaque;
891 } else {
72cf2d4f 892 if (QTAILQ_EMPTY(&slirp_stacks)) {
f13b572c
JK		 893 monitor_printf(mon, "user mode network stack not in use\n");
894 return NULL;
895 }
72cf2d4f 896 return QTAILQ_FIRST(&slirp_stacks);
f13b572c
JK		 897 }
898}
899
1d4daa91 900void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
c1261d8d 901{
3c6a0580 902 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c1261d8d
AG		 903 int host_port;
904 char buf[256] = "";
f13b572c
JK		 905 const char *src_str, *p;
906 SlirpState *s;
c1261d8d 907 int is_udp = 0;
9c12a6f2 908 int err;
1d4daa91
LC		 909 const char *arg1 = qdict_get_str(qdict, "arg1");
910 const char *arg2 = qdict_get_try_str(qdict, "arg2");
911 const char *arg3 = qdict_get_try_str(qdict, "arg3");
c1261d8d 912
f13b572c
JK		 913 if (arg2) {
914 s = slirp_lookup(mon, arg1, arg2);
915 src_str = arg3;
916 } else {
917 s = slirp_lookup(mon, NULL, NULL);
918 src_str = arg1;
919 }
920 if (!s) {
c1261d8d 921 return;
f3546deb 922 }
c1261d8d 923
3c6a0580 924 if (!src_str || !src_str[0])
c1261d8d
AG		 925 goto fail_syntax;
926
f13b572c 927 p = src_str;
c1261d8d
AG		 928 get_str_sep(buf, sizeof(buf), &p, ':');
929
930 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
931 is_udp = 0;
932 } else if (!strcmp(buf, "udp")) {
933 is_udp = 1;
934 } else {
935 goto fail_syntax;
936 }
937
3c6a0580
JK		 938 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
939 goto fail_syntax;
940 }
941 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
942 goto fail_syntax;
943 }
944
c1261d8d
AG		 945 host_port = atoi(p);
946
72cf2d4f 947 err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
9f8bd042 948 host_addr, host_port);
c1261d8d 949
9c12a6f2
JK		 950 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
951 err ? "removed" : "not found");
c1261d8d
AG		 952 return;
953
954 fail_syntax:
955 monitor_printf(mon, "invalid format\n");
956}
957
0752706d
MA		 958static int slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
959 int legacy_format)
63a01ef8 960{
3c6a0580 961 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c92ef6a2 962 struct in_addr guest_addr = { .s_addr = 0 };
63a01ef8 963 int host_port, guest_port;
b8e8af38 964 const char *p;
c92ef6a2 965 char buf[256];
b8e8af38 966 int is_udp;
c92ef6a2 967 char *end;
1c6ed9f3 968
63a01ef8 969 p = redir_str;
f13b572c 970 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 971 goto fail_syntax;
b8e8af38 972 }
d4ebe193 973 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
63a01ef8
AL		 974 is_udp = 0;
975 } else if (!strcmp(buf, "udp")) {
976 is_udp = 1;
977 } else {
d4ebe193 978 goto fail_syntax;
63a01ef8
AL		 979 }
980
3c6a0580
JK		 981 if (!legacy_format) {
982 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
983 goto fail_syntax;
984 }
985 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
986 goto fail_syntax;
987 }
988 }
989
990 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
d4ebe193 991 goto fail_syntax;
b8e8af38 992 }
c92ef6a2
JK		 993 host_port = strtol(buf, &end, 0);
994 if (*end != '\0' || host_port < 1 || host_port > 65535) {
d4ebe193 995 goto fail_syntax;
b8e8af38 996 }
63a01ef8 997
b8e8af38 998 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 999 goto fail_syntax;
b8e8af38 1000 }
c92ef6a2 1001 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
d4ebe193 1002 goto fail_syntax;
b8e8af38 1003 }
63a01ef8 1004
c92ef6a2
JK		 1005 guest_port = strtol(p, &end, 0);
1006 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
d4ebe193 1007 goto fail_syntax;
b8e8af38 1008 }
63a01ef8 1009
9f8bd042
JK		 1010 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1011 guest_port) < 0) {
c92ef6a2
JK		 1012 config_error(mon, "could not set up host forwarding rule '%s'\n",
1013 redir_str);
0752706d 1014 return -1;
63a01ef8 1015 }
0752706d 1016 return 0;
d4ebe193
AL		 1017
1018 fail_syntax:
c92ef6a2 1019 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
0752706d 1020 return -1;
63a01ef8
AL		 1021}
1022
1d4daa91 1023void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
b8e8af38 1024{
f13b572c
JK		 1025 const char *redir_str;
1026 SlirpState *s;
1d4daa91
LC		 1027 const char *arg1 = qdict_get_str(qdict, "arg1");
1028 const char *arg2 = qdict_get_try_str(qdict, "arg2");
1029 const char *arg3 = qdict_get_try_str(qdict, "arg3");
f13b572c
JK		 1030
1031 if (arg2) {
1032 s = slirp_lookup(mon, arg1, arg2);
1033 redir_str = arg3;
1034 } else {
1035 s = slirp_lookup(mon, NULL, NULL);
1036 redir_str = arg1;
1037 }
1038 if (s) {
1039 slirp_hostfwd(s, mon, redir_str, 0);
b8e8af38
JK		 1040 }
1041
f3546deb
JK		 1042}
1043
0752706d 1044int net_slirp_redir(const char *redir_str)
f3546deb
JK		 1045{
1046 struct slirp_config_str *config;
1047
72cf2d4f 1048 if (QTAILQ_EMPTY(&slirp_stacks)) {
f3546deb
JK		 1049 config = qemu_malloc(sizeof(*config));
1050 pstrcpy(config->str, sizeof(config->str), redir_str);
3c6a0580 1051 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
f3546deb
JK		 1052 config->next = slirp_configs;
1053 slirp_configs = config;
0752706d 1054 return 0;
b8e8af38
JK		 1055 }
1056
0752706d 1057 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), NULL, redir_str, 1);
b8e8af38
JK		 1058}
1059
63a01ef8
AL		 1060#ifndef _WIN32
1061
63a01ef8 1062/* automatic user mode samba server configuration */
28432466 1063static void slirp_smb_cleanup(SlirpState *s)
63a01ef8 1064{
28432466 1065 char cmd[128];
09c18925 1066
28432466
JK		 1067 if (s->smb_dir[0] != '\0') {
1068 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1069 system(cmd);
1070 s->smb_dir[0] = '\0';
1071 }
63a01ef8
AL		 1072}
1073
0752706d
MA		 1074static int slirp_smb(SlirpState* s, Monitor *mon, const char *exported_dir,
1075 struct in_addr vserver_addr)
63a01ef8 1076{
28432466
JK		 1077 static int instance;
1078 char smb_conf[128];
1079 char smb_cmdline[128];
63a01ef8
AL		 1080 FILE *f;
1081
28432466
JK		 1082 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1083 (long)getpid(), instance++);
1084 if (mkdir(s->smb_dir, 0700) < 0) {
1085 config_error(mon, "could not create samba server dir '%s'\n",
1086 s->smb_dir);
0752706d 1087 return -1;
63a01ef8 1088 }
28432466 1089 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
63a01ef8
AL		 1090
1091 f = fopen(smb_conf, "w");
1092 if (!f) {
28432466 1093 slirp_smb_cleanup(s);
492efabd
JK		 1094 config_error(mon, "could not create samba server "
1095 "configuration file '%s'\n", smb_conf);
0752706d 1096 return -1;
63a01ef8
AL		 1097 }
1098 fprintf(f,
1099 "[global]\n"
1100 "private dir=%s\n"
1101 "smb ports=0\n"
1102 "socket address=127.0.0.1\n"
1103 "pid directory=%s\n"
1104 "lock directory=%s\n"
1105 "log file=%s/log.smbd\n"
1106 "smb passwd file=%s/smbpasswd\n"
1107 "security = share\n"
1108 "[qemu]\n"
1109 "path=%s\n"
1110 "read only=no\n"
1111 "guest ok=yes\n",
28432466
JK		 1112 s->smb_dir,
1113 s->smb_dir,
1114 s->smb_dir,
1115 s->smb_dir,
1116 s->smb_dir,
63a01ef8
AL		 1117 exported_dir
1118 );
1119 fclose(f);
63a01ef8
AL		 1120
1121 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1122 SMBD_COMMAND, smb_conf);
1123
bb53fc53 1124 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
28432466 1125 slirp_smb_cleanup(s);
492efabd 1126 config_error(mon, "conflicting/invalid smbserver address\n");
0752706d 1127 return -1;
c92ef6a2 1128 }
0752706d 1129 return 0;
63a01ef8
AL		 1130}
1131
ad196a9d 1132/* automatic user mode samba server configuration (legacy interface) */
0752706d 1133int net_slirp_smb(const char *exported_dir)
b8e8af38 1134{
c92ef6a2
JK		 1135 struct in_addr vserver_addr = { .s_addr = 0 };
1136
ad196a9d 1137 if (legacy_smb_export) {
b8e8af38 1138 fprintf(stderr, "-smb given twice\n");
0752706d 1139 return -1;
b8e8af38 1140 }
ad196a9d 1141 legacy_smb_export = exported_dir;
72cf2d4f 1142 if (!QTAILQ_EMPTY(&slirp_stacks)) {
0752706d
MA		 1143 return slirp_smb(QTAILQ_FIRST(&slirp_stacks), NULL, exported_dir,
1144 vserver_addr);
b8e8af38 1145 }
0752706d 1146 return 0;
b8e8af38
JK		 1147}
1148
63a01ef8 1149#endif /* !defined(_WIN32) */
b8e8af38 1150
c92ef6a2 1151struct GuestFwd {
8ca9217d 1152 CharDriverState *hd;
c92ef6a2 1153 struct in_addr server;
8ca9217d 1154 int port;
9f8bd042 1155 Slirp *slirp;
511d2b14 1156};
8ca9217d 1157
c92ef6a2 1158static int guestfwd_can_read(void *opaque)
8ca9217d 1159{
c92ef6a2 1160 struct GuestFwd *fwd = opaque;
9f8bd042 1161 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
8ca9217d
AL		 1162}
1163
c92ef6a2 1164static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
8ca9217d 1165{
c92ef6a2 1166 struct GuestFwd *fwd = opaque;
9f8bd042 1167 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
8ca9217d
AL		 1168}
1169
0752706d
MA		 1170static int slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
1171 int legacy_format)
ad196a9d 1172{
c92ef6a2
JK		 1173 struct in_addr server = { .s_addr = 0 };
1174 struct GuestFwd *fwd;
1175 const char *p;
1176 char buf[128];
1177 char *end;
ad196a9d
JK		 1178 int port;
1179
c92ef6a2
JK		 1180 p = config_str;
1181 if (legacy_format) {
1182 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1183 goto fail_syntax;
1184 }
1185 } else {
1186 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1187 goto fail_syntax;
1188 }
1189 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1190 goto fail_syntax;
1191 }
1192 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1193 goto fail_syntax;
1194 }
1195 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1196 goto fail_syntax;
1197 }
1198 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1199 goto fail_syntax;
1200 }
1201 }
1202 port = strtol(buf, &end, 10);
1203 if (*end != '\0' || port < 1 || port > 65535) {
1204 goto fail_syntax;
ad196a9d 1205 }
ad196a9d 1206
c92ef6a2
JK		 1207 fwd = qemu_malloc(sizeof(struct GuestFwd));
1208 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1209 fwd->hd = qemu_chr_open(buf, p, NULL);
1210 if (!fwd->hd) {
1211 config_error(mon, "could not open guest forwarding device '%s'\n",
1212 buf);
1213 qemu_free(fwd);
0752706d 1214 return -1;
ad196a9d 1215 }
ad196a9d 1216
bb53fc53 1217 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
c92ef6a2
JK		 1218 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1219 "rule '%s'\n", config_str);
1220 qemu_free(fwd);
0752706d 1221 return -1;
c92ef6a2 1222 }
bb53fc53
JK		 1223 fwd->server = server;
1224 fwd->port = port;
1225 fwd->slirp = s->slirp;
1226
c92ef6a2
JK		 1227 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1228 NULL, fwd);
0752706d 1229 return 0;
c92ef6a2
JK		 1230
1231 fail_syntax:
1232 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
0752706d 1233 return -1;
ad196a9d
JK		 1234}
1235
6dbe553f
JK		 1236void do_info_usernet(Monitor *mon)
1237{
b1c99fcd 1238 SlirpState *s;
9f8bd042 1239
72cf2d4f 1240 QTAILQ_FOREACH(s, &slirp_stacks, entry) {
b1c99fcd
JK		 1241 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1242 slirp_connection_info(s->slirp, mon);
9f8bd042 1243 }
6dbe553f
JK		 1244}
1245
63a01ef8
AL		 1246#endif /* CONFIG_SLIRP */
1247
1248#if !defined(_WIN32)
1249
1250typedef struct TAPState {
1251 VLANClientState *vc;
1252 int fd;
1253 char down_script[1024];
973cbd37 1254 char down_script_arg[128];
5b01e886 1255 uint8_t buf[4096];
b664e367 1256 unsigned int read_poll : 1;
1f7babf6 1257 unsigned int write_poll : 1;
63a01ef8
AL		 1258} TAPState;
1259
b946a153
AL		 1260static int launch_script(const char *setup_script, const char *ifname, int fd);
1261
b664e367
MM		 1262static int tap_can_send(void *opaque);
1263static void tap_send(void *opaque);
1f7babf6 1264static void tap_writable(void *opaque);
b664e367
MM		 1265
1266static void tap_update_fd_handler(TAPState *s)
1267{
1268 qemu_set_fd_handler2(s->fd,
1269 s->read_poll ? tap_can_send : NULL,
1270 s->read_poll ? tap_send : NULL,
1f7babf6 1271 s->write_poll ? tap_writable : NULL,
b664e367
MM		 1272 s);
1273}
1274
1275static void tap_read_poll(TAPState *s, int enable)
1276{
1277 s->read_poll = !!enable;
1278 tap_update_fd_handler(s);
1279}
1280
1f7babf6
MM		 1281static void tap_write_poll(TAPState *s, int enable)
1282{
1283 s->write_poll = !!enable;
1284 tap_update_fd_handler(s);
1285}
1286
1287static void tap_writable(void *opaque)
1288{
1289 TAPState *s = opaque;
1290
1291 tap_write_poll(s, 0);
1292
1293 qemu_flush_queued_packets(s->vc);
1294}
1295
e3f5ec2b 1296static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
b535b7b2
AL		 1297 int iovcnt)
1298{
e3f5ec2b 1299 TAPState *s = vc->opaque;
b535b7b2
AL		 1300 ssize_t len;
1301
1302 do {
1303 len = writev(s->fd, iov, iovcnt);
1f7babf6
MM		 1304 } while (len == -1 && errno == EINTR);
1305
1306 if (len == -1 && errno == EAGAIN) {
1307 tap_write_poll(s, 1);
1308 return 0;
1309 }
b535b7b2
AL		 1310
1311 return len;
1312}
b535b7b2 1313
4f1c942b 1314static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1315{
e3f5ec2b 1316 TAPState *s = vc->opaque;
4f1c942b
MM		 1317 ssize_t len;
1318
1319 do {
1320 len = write(s->fd, buf, size);
1321 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1322
1323 return len;
63a01ef8
AL		 1324}
1325
3471b757
MM		 1326static int tap_can_send(void *opaque)
1327{
1328 TAPState *s = opaque;
1329
1330 return qemu_can_send_packet(s->vc);
1331}
1332
63a01ef8 1333#ifdef __sun__
5a6d8815
MM		 1334static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1335{
63a01ef8
AL		 1336 struct strbuf sbuf;
1337 int f = 0;
5a6d8815
MM		 1338
1339 sbuf.maxlen = maxlen;
3f4cb3d3 1340 sbuf.buf = (char *)buf;
5a6d8815
MM		 1341
1342 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1343}
63a01ef8 1344#else
5a6d8815
MM		 1345static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1346{
1347 return read(tapfd, buf, maxlen);
1348}
63a01ef8 1349#endif
5a6d8815 1350
783527a9 1351static void tap_send_completed(VLANClientState *vc, ssize_t len)
e19eb224
MM		 1352{
1353 TAPState *s = vc->opaque;
b664e367 1354 tap_read_poll(s, 1);
e19eb224
MM		 1355}
1356
5a6d8815
MM		 1357static void tap_send(void *opaque)
1358{
1359 TAPState *s = opaque;
5a6d8815
MM		 1360 int size;
1361
e19eb224
MM		 1362 do {
1363 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1364 if (size <= 0) {
1365 break;
1366 }
1367
1368 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1369 if (size == 0) {
b664e367 1370 tap_read_poll(s, 0);
e19eb224
MM		 1371 }
1372 } while (size > 0);
63a01ef8
AL		 1373}
1374
0df0ff6d 1375#ifdef TUNSETSNDBUF
fc5b81d1
MM		 1376/* sndbuf should be set to a value lower than the tx queue
1377 * capacity of any destination network interface.
1378 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1379 * a good default, given a 1500 byte MTU.
1380 */
1381#define TAP_DEFAULT_SNDBUF 1024*1024
1382
0752706d 1383static int tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
fc5b81d1
MM		 1384{
1385 int sndbuf = TAP_DEFAULT_SNDBUF;
1386
1387 if (sndbuf_str) {
1388 sndbuf = atoi(sndbuf_str);
1389 }
1390
1391 if (!sndbuf) {
1392 sndbuf = INT_MAX;
1393 }
1394
d026fb6d 1395 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && sndbuf_str) {
0df0ff6d
MM		 1396 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1397 strerror(errno));
0752706d 1398 return -1;
0df0ff6d 1399 }
0752706d 1400 return 0;
fc5b81d1 1401}
0df0ff6d 1402#else
0752706d 1403static int tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
fc5b81d1
MM		 1404{
1405 if (sndbuf_str) {
1406 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
0752706d 1407 return -1;
fc5b81d1 1408 }
0752706d 1409 return 0;
0df0ff6d 1410}
fc5b81d1 1411#endif /* TUNSETSNDBUF */
0df0ff6d 1412
b946a153
AL		 1413static void tap_cleanup(VLANClientState *vc)
1414{
1415 TAPState *s = vc->opaque;
1416
b9adce2c
MM		 1417 qemu_purge_queued_packets(vc);
1418
b946a153
AL		 1419 if (s->down_script[0])
1420 launch_script(s->down_script, s->down_script_arg, s->fd);
1421
b664e367 1422 tap_read_poll(s, 0);
1f7babf6 1423 tap_write_poll(s, 0);
b946a153
AL		 1424 close(s->fd);
1425 qemu_free(s);
1426}
1427
63a01ef8
AL		 1428/* fd support */
1429
7a9f6e4a
AL		 1430static TAPState *net_tap_fd_init(VLANState *vlan,
1431 const char *model,
1432 const char *name,
1433 int fd)
63a01ef8
AL		 1434{
1435 TAPState *s;
1436
1437 s = qemu_mallocz(sizeof(TAPState));
63a01ef8 1438 s->fd = fd;
463af534
MM		 1439 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1440 tap_receive_iov, tap_cleanup, s);
b664e367 1441 tap_read_poll(s, 1);
7cb7434b 1442 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
63a01ef8
AL		 1443 return s;
1444}
1445
71e72a19 1446#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
63a01ef8
AL		 1447static int tap_open(char *ifname, int ifname_size)
1448{
1449 int fd;
1450 char *dev;
1451 struct stat s;
1452
1453 TFR(fd = open("/dev/tap", O_RDWR));
1454 if (fd < 0) {
1455 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1456 return -1;
1457 }
1458
1459 fstat(fd, &s);
1460 dev = devname(s.st_rdev, S_IFCHR);
1461 pstrcpy(ifname, ifname_size, dev);
1462
1463 fcntl(fd, F_SETFL, O_NONBLOCK);
1464 return fd;
1465}
1466#elif defined(__sun__)
1467#define TUNNEWPPA (('T'<<16) | 0x0001)
1468/*
1469 * Allocate TAP device, returns opened fd.
1470 * Stores dev name in the first arg(must be large enough).
1471 */
3f4cb3d3 1472static int tap_alloc(char *dev, size_t dev_size)
63a01ef8
AL		 1473{
1474 int tap_fd, if_fd, ppa = -1;
1475 static int ip_fd = 0;
1476 char *ptr;
1477
1478 static int arp_fd = 0;
1479 int ip_muxid, arp_muxid;
1480 struct strioctl strioc_if, strioc_ppa;
1481 int link_type = I_PLINK;;
1482 struct lifreq ifr;
1483 char actual_name[32] = "";
1484
1485 memset(&ifr, 0x0, sizeof(ifr));
1486
1487 if( *dev ){
1488 ptr = dev;
47398b9c 1489 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
63a01ef8
AL		 1490 ppa = atoi(ptr);
1491 }
1492
1493 /* Check if IP device was opened */
1494 if( ip_fd )
1495 close(ip_fd);
1496
1497 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1498 if (ip_fd < 0) {
1499 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1500 return -1;
1501 }
1502
1503 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1504 if (tap_fd < 0) {
1505 syslog(LOG_ERR, "Can't open /dev/tap");
1506 return -1;
1507 }
1508
1509 /* Assign a new PPA and get its unit number. */
1510 strioc_ppa.ic_cmd = TUNNEWPPA;
1511 strioc_ppa.ic_timout = 0;
1512 strioc_ppa.ic_len = sizeof(ppa);
1513 strioc_ppa.ic_dp = (char *)&ppa;
1514 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1515 syslog (LOG_ERR, "Can't assign new interface");
1516
1517 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1518 if (if_fd < 0) {
1519 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1520 return -1;
1521 }
1522 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1523 syslog(LOG_ERR, "Can't push IP module");
1524 return -1;
1525 }
1526
1527 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1528 syslog(LOG_ERR, "Can't get flags\n");
1529
1530 snprintf (actual_name, 32, "tap%d", ppa);
1531 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1532
1533 ifr.lifr_ppa = ppa;
1534 /* Assign ppa according to the unit number returned by tun device */
1535
1536 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1537 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1538 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1539 syslog (LOG_ERR, "Can't get flags\n");
1540 /* Push arp module to if_fd */
1541 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1542 syslog (LOG_ERR, "Can't push ARP module (2)");
1543
1544 /* Push arp module to ip_fd */
1545 if (ioctl (ip_fd, I_POP, NULL) < 0)
1546 syslog (LOG_ERR, "I_POP failed\n");
1547 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1548 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1549 /* Open arp_fd */
1550 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1551 if (arp_fd < 0)
1552 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1553
1554 /* Set ifname to arp */
1555 strioc_if.ic_cmd = SIOCSLIFNAME;
1556 strioc_if.ic_timout = 0;
1557 strioc_if.ic_len = sizeof(ifr);
1558 strioc_if.ic_dp = (char *)&ifr;
1559 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1560 syslog (LOG_ERR, "Can't set ifname to arp\n");
1561 }
1562
1563 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1564 syslog(LOG_ERR, "Can't link TAP device to IP");
1565 return -1;
1566 }
1567
1568 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1569 syslog (LOG_ERR, "Can't link TAP device to ARP");
1570
1571 close (if_fd);
1572
1573 memset(&ifr, 0x0, sizeof(ifr));
1574 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1575 ifr.lifr_ip_muxid = ip_muxid;
1576 ifr.lifr_arp_muxid = arp_muxid;
1577
1578 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1579 {
1580 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1581 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1582 syslog (LOG_ERR, "Can't set multiplexor id");
1583 }
1584
1585 snprintf(dev, dev_size, "tap%d", ppa);
1586 return tap_fd;
1587}
1588
1589static int tap_open(char *ifname, int ifname_size)
1590{
1591 char dev[10]="";
1592 int fd;
1593 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1594 fprintf(stderr, "Cannot allocate TAP device\n");
1595 return -1;
1596 }
1597 pstrcpy(ifname, ifname_size, dev);
1598 fcntl(fd, F_SETFL, O_NONBLOCK);
1599 return fd;
1600}
b29fe3ed 1601#elif defined (_AIX)
1602static int tap_open(char *ifname, int ifname_size)
1603{
1604 fprintf (stderr, "no tap on AIX\n");
1605 return -1;
1606}
63a01ef8
AL		 1607#else
1608static int tap_open(char *ifname, int ifname_size)
1609{
1610 struct ifreq ifr;
1611 int fd, ret;
1612
1613 TFR(fd = open("/dev/net/tun", O_RDWR));
1614 if (fd < 0) {
1615 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1616 return -1;
1617 }
1618 memset(&ifr, 0, sizeof(ifr));
1619 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1620 if (ifname[0] != '\0')
1621 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1622 else
1623 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1624 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1625 if (ret != 0) {
1626 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1627 close(fd);
1628 return -1;
1629 }
1630 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1631 fcntl(fd, F_SETFL, O_NONBLOCK);
1632 return fd;
1633}
1634#endif
1635
1636static int launch_script(const char *setup_script, const char *ifname, int fd)
1637{
7c3370d4 1638 sigset_t oldmask, mask;
63a01ef8
AL		 1639 int pid, status;
1640 char *args[3];
1641 char **parg;
1642
7c3370d4
JK		 1643 sigemptyset(&mask);
1644 sigaddset(&mask, SIGCHLD);
1645 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1646
1647 /* try to launch network script */
1648 pid = fork();
1649 if (pid == 0) {
1650 int open_max = sysconf(_SC_OPEN_MAX), i;
1651
1652 for (i = 0; i < open_max; i++) {
1653 if (i != STDIN_FILENO &&
1654 i != STDOUT_FILENO &&
1655 i != STDERR_FILENO &&
1656 i != fd) {
1657 close(i);
63a01ef8
AL		 1658 }
1659 }
7c3370d4
JK		 1660 parg = args;
1661 *parg++ = (char *)setup_script;
1662 *parg++ = (char *)ifname;
1663 *parg++ = NULL;
1664 execv(setup_script, args);
1665 _exit(1);
1666 } else if (pid > 0) {
1667 while (waitpid(pid, &status, 0) != pid) {
1668 /* loop */
1669 }
1670 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1671
1672 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1673 return 0;
1674 }
1675 }
1676 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1677 return -1;
63a01ef8
AL		 1678}
1679
4a77b25e
MM		 1680static TAPState *net_tap_init(VLANState *vlan, const char *model,
1681 const char *name, const char *ifname1,
1682 const char *setup_script, const char *down_script)
63a01ef8
AL		 1683{
1684 TAPState *s;
1685 int fd;
1686 char ifname[128];
1687
1688 if (ifname1 != NULL)
1689 pstrcpy(ifname, sizeof(ifname), ifname1);
1690 else
1691 ifname[0] = '\0';
1692 TFR(fd = tap_open(ifname, sizeof(ifname)));
1693 if (fd < 0)
4a77b25e 1694 return NULL;
63a01ef8
AL		 1695
1696 if (!setup_script || !strcmp(setup_script, "no"))
1697 setup_script = "";
4a77b25e
MM		 1698 if (setup_script[0] != '\0' &&
1699 launch_script(setup_script, ifname, fd)) {
1700 return NULL;
63a01ef8 1701 }
7a9f6e4a 1702 s = net_tap_fd_init(vlan, model, name, fd);
63a01ef8 1703 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
7cb7434b
AL		 1704 "ifname=%s,script=%s,downscript=%s",
1705 ifname, setup_script, down_script);
973cbd37 1706 if (down_script && strcmp(down_script, "no")) {
63a01ef8 1707 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
973cbd37
AL		 1708 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1709 }
4a77b25e 1710 return s;
63a01ef8
AL		 1711}
1712
1713#endif /* !_WIN32 */
1714
1715#if defined(CONFIG_VDE)
1716typedef struct VDEState {
1717 VLANClientState *vc;
1718 VDECONN *vde;
1719} VDEState;
1720
1721static void vde_to_qemu(void *opaque)
1722{
1723 VDEState *s = opaque;
1724 uint8_t buf[4096];
1725 int size;
1726
cc63bb0f 1727 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
63a01ef8
AL		 1728 if (size > 0) {
1729 qemu_send_packet(s->vc, buf, size);
1730 }
1731}
1732
4f1c942b 1733static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1734{
e3f5ec2b 1735 VDEState *s = vc->opaque;
068daedd 1736 ssize_t ret;
4f1c942b
MM		 1737
1738 do {
1739 ret = vde_send(s->vde, (const char *)buf, size, 0);
1740 } while (ret < 0 && errno == EINTR);
1741
1742 return ret;
63a01ef8
AL		 1743}
1744
b946a153
AL		 1745static void vde_cleanup(VLANClientState *vc)
1746{
1747 VDEState *s = vc->opaque;
1748 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1749 vde_close(s->vde);
1750 qemu_free(s);
1751}
1752
7a9f6e4a
AL		 1753static int net_vde_init(VLANState *vlan, const char *model,
1754 const char *name, const char *sock,
bf38c1a0 1755 int port, const char *group, int mode)
63a01ef8
AL		 1756{
1757 VDEState *s;
1758 char *init_group = strlen(group) ? (char *)group : NULL;
1759 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1760
1761 struct vde_open_args args = {
1762 .port = port,
1763 .group = init_group,
1764 .mode = mode,
1765 };
1766
1767 s = qemu_mallocz(sizeof(VDEState));
cc63bb0f 1768 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
63a01ef8
AL		 1769 if (!s->vde){
1770 free(s);
1771 return -1;
1772 }
e3f5ec2b 1773 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
b946a153 1774 NULL, vde_cleanup, s);
63a01ef8 1775 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
7cb7434b 1776 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
63a01ef8
AL		 1777 sock, vde_datafd(s->vde));
1778 return 0;
1779}
1780#endif
1781
1782/* network connection */
1783typedef struct NetSocketState {
1784 VLANClientState *vc;
1785 int fd;
1786 int state; /* 0 = getting length, 1 = getting data */
abcd2baa
AL		 1787 unsigned int index;
1788 unsigned int packet_len;
63a01ef8
AL		 1789 uint8_t buf[4096];
1790 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1791} NetSocketState;
1792
1793typedef struct NetSocketListenState {
1794 VLANState *vlan;
bf38c1a0 1795 char *model;
7a9f6e4a 1796 char *name;
63a01ef8
AL		 1797 int fd;
1798} NetSocketListenState;
1799
1800/* XXX: we consider we can send the whole packet without blocking */
4f1c942b 1801static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1802{
e3f5ec2b 1803 NetSocketState *s = vc->opaque;
63a01ef8
AL		 1804 uint32_t len;
1805 len = htonl(size);
1806
1807 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
4f1c942b 1808 return send_all(s->fd, buf, size);
63a01ef8
AL		 1809}
1810
4f1c942b 1811static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1812{
e3f5ec2b 1813 NetSocketState *s = vc->opaque;
4f1c942b 1814
70503264 1815 return sendto(s->fd, (const void *)buf, size, 0,
4f1c942b 1816 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
63a01ef8
AL		 1817}
1818
1819static void net_socket_send(void *opaque)
1820{
1821 NetSocketState *s = opaque;
abcd2baa
AL		 1822 int size, err;
1823 unsigned l;
63a01ef8
AL		 1824 uint8_t buf1[4096];
1825 const uint8_t *buf;
1826
c5b76b38 1827 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
63a01ef8
AL		 1828 if (size < 0) {
1829 err = socket_error();
1830 if (err != EWOULDBLOCK)
1831 goto eoc;
1832 } else if (size == 0) {
1833 /* end of connection */
1834 eoc:
1835 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1836 closesocket(s->fd);
1837 return;
1838 }
1839 buf = buf1;
1840 while (size > 0) {
1841 /* reassemble a packet from the network */
1842 switch(s->state) {
1843 case 0:
1844 l = 4 - s->index;
1845 if (l > size)
1846 l = size;
1847 memcpy(s->buf + s->index, buf, l);
1848 buf += l;
1849 size -= l;
1850 s->index += l;
1851 if (s->index == 4) {
1852 /* got length */
1853 s->packet_len = ntohl(*(uint32_t *)s->buf);
1854 s->index = 0;
1855 s->state = 1;
1856 }
1857 break;
1858 case 1:
1859 l = s->packet_len - s->index;
1860 if (l > size)
1861 l = size;
abcd2baa
AL		 1862 if (s->index + l <= sizeof(s->buf)) {
1863 memcpy(s->buf + s->index, buf, l);
1864 } else {
1865 fprintf(stderr, "serious error: oversized packet received,"
1866 "connection terminated.\n");
1867 s->state = 0;
1868 goto eoc;
1869 }
1870
63a01ef8
AL		 1871 s->index += l;
1872 buf += l;
1873 size -= l;
1874 if (s->index >= s->packet_len) {
1875 qemu_send_packet(s->vc, s->buf, s->packet_len);
1876 s->index = 0;
1877 s->state = 0;
1878 }
1879 break;
1880 }
1881 }
1882}
1883
1884static void net_socket_send_dgram(void *opaque)
1885{
1886 NetSocketState *s = opaque;
1887 int size;
1888
c5b76b38 1889 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
63a01ef8
AL		 1890 if (size < 0)
1891 return;
1892 if (size == 0) {
1893 /* end of connection */
1894 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1895 return;
1896 }
1897 qemu_send_packet(s->vc, s->buf, size);
1898}
1899
1900static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1901{
1902 struct ip_mreq imr;
1903 int fd;
1904 int val, ret;
1905 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1906 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1907 inet_ntoa(mcastaddr->sin_addr),
1908 (int)ntohl(mcastaddr->sin_addr.s_addr));
1909 return -1;
1910
1911 }
1912 fd = socket(PF_INET, SOCK_DGRAM, 0);
1913 if (fd < 0) {
1914 perror("socket(PF_INET, SOCK_DGRAM)");
1915 return -1;
1916 }
1917
1918 val = 1;
1919 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1920 (const char *)&val, sizeof(val));
1921 if (ret < 0) {
1922 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1923 goto fail;
1924 }
1925
1926 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1927 if (ret < 0) {
1928 perror("bind");
1929 goto fail;
1930 }
1931
1932 /* Add host to multicast group */
1933 imr.imr_multiaddr = mcastaddr->sin_addr;
1934 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1935
1936 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1937 (const char *)&imr, sizeof(struct ip_mreq));
1938 if (ret < 0) {
1939 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1940 goto fail;
1941 }
1942
1943 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1944 val = 1;
1945 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1946 (const char *)&val, sizeof(val));
1947 if (ret < 0) {
1948 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1949 goto fail;
1950 }
1951
1952 socket_set_nonblock(fd);
1953 return fd;
1954fail:
1955 if (fd >= 0)
1956 closesocket(fd);
1957 return -1;
1958}
1959
b946a153
AL		 1960static void net_socket_cleanup(VLANClientState *vc)
1961{
1962 NetSocketState *s = vc->opaque;
1963 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1964 close(s->fd);
1965 qemu_free(s);
1966}
1967
7a9f6e4a
AL		 1968static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1969 const char *model,
1970 const char *name,
bf38c1a0 1971 int fd, int is_connected)
63a01ef8
AL		 1972{
1973 struct sockaddr_in saddr;
1974 int newfd;
1975 socklen_t saddr_len;
1976 NetSocketState *s;
1977
1978 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1979 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1980 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1981 */
1982
1983 if (is_connected) {
1984 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1985 /* must be bound */
1986 if (saddr.sin_addr.s_addr==0) {
1987 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1988 fd);
1989 return NULL;
1990 }
1991 /* clone dgram socket */
1992 newfd = net_socket_mcast_create(&saddr);
1993 if (newfd < 0) {
1994 /* error already reported by net_socket_mcast_create() */
1995 close(fd);
1996 return NULL;
1997 }
1998 /* clone newfd to fd, close newfd */
1999 dup2(newfd, fd);
2000 close(newfd);
2001
2002 } else {
2003 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2004 fd, strerror(errno));
2005 return NULL;
2006 }
2007 }
2008
2009 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8
AL		 2010 s->fd = fd;
2011
463af534 2012 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
b946a153 2013 NULL, net_socket_cleanup, s);
63a01ef8
AL		 2014 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2015
2016 /* mcast: save bound address as dst */
2017 if (is_connected) s->dgram_dst=saddr;
2018
2019 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2020 "socket: fd=%d (%s mcast=%s:%d)",
2021 fd, is_connected? "cloned" : "",
2022 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2023 return s;
2024}
2025
2026static void net_socket_connect(void *opaque)
2027{
2028 NetSocketState *s = opaque;
2029 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2030}
2031
7a9f6e4a
AL		 2032static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2033 const char *model,
2034 const char *name,
bf38c1a0 2035 int fd, int is_connected)
63a01ef8
AL		 2036{
2037 NetSocketState *s;
2038 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8 2039 s->fd = fd;
463af534 2040 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
b946a153 2041 NULL, net_socket_cleanup, s);
63a01ef8
AL		 2042 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2043 "socket: fd=%d", fd);
2044 if (is_connected) {
2045 net_socket_connect(s);
2046 } else {
2047 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2048 }
2049 return s;
2050}
2051
7a9f6e4a
AL		 2052static NetSocketState *net_socket_fd_init(VLANState *vlan,
2053 const char *model, const char *name,
bf38c1a0 2054 int fd, int is_connected)
63a01ef8 2055{
acedcfbf 2056 int so_type = -1, optlen=sizeof(so_type);
63a01ef8
AL		 2057
2058 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2059 (socklen_t *)&optlen)< 0) {
2060 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2061 return NULL;
2062 }
2063 switch(so_type) {
2064 case SOCK_DGRAM:
7a9f6e4a 2065 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
63a01ef8 2066 case SOCK_STREAM:
7a9f6e4a 2067 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2068 default:
2069 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2070 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
7a9f6e4a 2071 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2072 }
2073 return NULL;
2074}
2075
2076static void net_socket_accept(void *opaque)
2077{
2078 NetSocketListenState *s = opaque;
2079 NetSocketState *s1;
2080 struct sockaddr_in saddr;
2081 socklen_t len;
2082 int fd;
2083
2084 for(;;) {
2085 len = sizeof(saddr);
2086 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2087 if (fd < 0 && errno != EINTR) {
2088 return;
2089 } else if (fd >= 0) {
2090 break;
2091 }
2092 }
7a9f6e4a 2093 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
63a01ef8
AL		 2094 if (!s1) {
2095 closesocket(fd);
2096 } else {
2097 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2098 "socket: connection from %s:%d",
2099 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2100 }
2101}
2102
7a9f6e4a
AL		 2103static int net_socket_listen_init(VLANState *vlan,
2104 const char *model,
2105 const char *name,
bf38c1a0 2106 const char *host_str)
63a01ef8
AL		 2107{
2108 NetSocketListenState *s;
2109 int fd, val, ret;
2110 struct sockaddr_in saddr;
2111
2112 if (parse_host_port(&saddr, host_str) < 0)
2113 return -1;
2114
2115 s = qemu_mallocz(sizeof(NetSocketListenState));
63a01ef8
AL		 2116
2117 fd = socket(PF_INET, SOCK_STREAM, 0);
2118 if (fd < 0) {
2119 perror("socket");
2120 return -1;
2121 }
2122 socket_set_nonblock(fd);
2123
2124 /* allow fast reuse */
2125 val = 1;
2126 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2127
2128 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2129 if (ret < 0) {
2130 perror("bind");
2131 return -1;
2132 }
2133 ret = listen(fd, 0);
2134 if (ret < 0) {
2135 perror("listen");
2136 return -1;
2137 }
2138 s->vlan = vlan;
02374aa0
MM		 2139 s->model = qemu_strdup(model);
2140 s->name = name ? qemu_strdup(name) : NULL;
63a01ef8
AL		 2141 s->fd = fd;
2142 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2143 return 0;
2144}
2145
7a9f6e4a
AL		 2146static int net_socket_connect_init(VLANState *vlan,
2147 const char *model,
2148 const char *name,
bf38c1a0 2149 const char *host_str)
63a01ef8
AL		 2150{
2151 NetSocketState *s;
2152 int fd, connected, ret, err;
2153 struct sockaddr_in saddr;
2154
2155 if (parse_host_port(&saddr, host_str) < 0)
2156 return -1;
2157
2158 fd = socket(PF_INET, SOCK_STREAM, 0);
2159 if (fd < 0) {
2160 perror("socket");
2161 return -1;
2162 }
2163 socket_set_nonblock(fd);
2164
2165 connected = 0;
2166 for(;;) {
2167 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2168 if (ret < 0) {
2169 err = socket_error();
2170 if (err == EINTR || err == EWOULDBLOCK) {
2171 } else if (err == EINPROGRESS) {
2172 break;
2173#ifdef _WIN32
2174 } else if (err == WSAEALREADY) {
2175 break;
2176#endif
2177 } else {
2178 perror("connect");
2179 closesocket(fd);
2180 return -1;
2181 }
2182 } else {
2183 connected = 1;
2184 break;
2185 }
2186 }
7a9f6e4a 2187 s = net_socket_fd_init(vlan, model, name, fd, connected);
63a01ef8
AL		 2188 if (!s)
2189 return -1;
2190 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2191 "socket: connect to %s:%d",
2192 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2193 return 0;
2194}
2195
7a9f6e4a
AL		 2196static int net_socket_mcast_init(VLANState *vlan,
2197 const char *model,
2198 const char *name,
bf38c1a0 2199 const char *host_str)
63a01ef8
AL		 2200{
2201 NetSocketState *s;
2202 int fd;
2203 struct sockaddr_in saddr;
2204
2205 if (parse_host_port(&saddr, host_str) < 0)
2206 return -1;
2207
2208
2209 fd = net_socket_mcast_create(&saddr);
2210 if (fd < 0)
2211 return -1;
2212
7a9f6e4a 2213 s = net_socket_fd_init(vlan, model, name, fd, 0);
63a01ef8
AL		 2214 if (!s)
2215 return -1;
2216
2217 s->dgram_dst = saddr;
2218
2219 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2220 "socket: mcast=%s:%d",
2221 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2222 return 0;
2223
2224}
2225
bb9ea79e
AL		 2226typedef struct DumpState {
2227 VLANClientState *pcap_vc;
2228 int fd;
2229 int pcap_caplen;
2230} DumpState;
2231
2232#define PCAP_MAGIC 0xa1b2c3d4
2233
2234struct pcap_file_hdr {
2235 uint32_t magic;
2236 uint16_t version_major;
2237 uint16_t version_minor;
2238 int32_t thiszone;
2239 uint32_t sigfigs;
2240 uint32_t snaplen;
2241 uint32_t linktype;
2242};
2243
2244struct pcap_sf_pkthdr {
2245 struct {
2246 int32_t tv_sec;
2247 int32_t tv_usec;
2248 } ts;
2249 uint32_t caplen;
2250 uint32_t len;
2251};
2252
4f1c942b 2253static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
bb9ea79e 2254{
e3f5ec2b 2255 DumpState *s = vc->opaque;
bb9ea79e
AL		 2256 struct pcap_sf_pkthdr hdr;
2257 int64_t ts;
2258 int caplen;
2259
2260 /* Early return in case of previous error. */
2261 if (s->fd < 0) {
4f1c942b 2262 return size;
bb9ea79e
AL		 2263 }
2264
6ee093c9 2265 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
bb9ea79e
AL		 2266 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2267
37cb6fc3 2268 hdr.ts.tv_sec = ts / 1000000;
bb9ea79e
AL		 2269 hdr.ts.tv_usec = ts % 1000000;
2270 hdr.caplen = caplen;
2271 hdr.len = size;
2272 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2273 write(s->fd, buf, caplen) != caplen) {
2274 qemu_log("-net dump write error - stop dump\n");
2275 close(s->fd);
2276 s->fd = -1;
2277 }
4f1c942b
MM		 2278
2279 return size;
bb9ea79e
AL		 2280}
2281
2282static void net_dump_cleanup(VLANClientState *vc)
2283{
2284 DumpState *s = vc->opaque;
2285
2286 close(s->fd);
2287 qemu_free(s);
2288}
2289
10ae5a7a 2290static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
bb9ea79e
AL		 2291 const char *name, const char *filename, int len)
2292{
2293 struct pcap_file_hdr hdr;
2294 DumpState *s;
2295
2296 s = qemu_malloc(sizeof(DumpState));
2297
024431b3 2298 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
bb9ea79e 2299 if (s->fd < 0) {
10ae5a7a 2300 config_error(mon, "-net dump: can't open %s\n", filename);
bb9ea79e
AL		 2301 return -1;
2302 }
2303
2304 s->pcap_caplen = len;
2305
2306 hdr.magic = PCAP_MAGIC;
2307 hdr.version_major = 2;
2308 hdr.version_minor = 4;
2309 hdr.thiszone = 0;
2310 hdr.sigfigs = 0;
2311 hdr.snaplen = s->pcap_caplen;
2312 hdr.linktype = 1;
2313
2314 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
10ae5a7a 2315 config_error(mon, "-net dump write error: %s\n", strerror(errno));
bb9ea79e
AL		 2316 close(s->fd);
2317 qemu_free(s);
2318 return -1;
2319 }
2320
463af534 2321 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
bb9ea79e
AL		 2322 net_dump_cleanup, s);
2323 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2324 "dump to %s (len=%d)", filename, len);
2325 return 0;
2326}
2327
63a01ef8 2328/* find or alloc a new VLAN */
1a609520 2329VLANState *qemu_find_vlan(int id, int allocate)
63a01ef8
AL		 2330{
2331 VLANState **pvlan, *vlan;
2332 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2333 if (vlan->id == id)
2334 return vlan;
2335 }
1a609520
JK		 2336 if (!allocate) {
2337 return NULL;
2338 }
63a01ef8 2339 vlan = qemu_mallocz(sizeof(VLANState));
63a01ef8 2340 vlan->id = id;
72cf2d4f 2341 QTAILQ_INIT(&vlan->send_queue);
63a01ef8
AL		 2342 vlan->next = NULL;
2343 pvlan = &first_vlan;
2344 while (*pvlan != NULL)
2345 pvlan = &(*pvlan)->next;
2346 *pvlan = vlan;
2347 return vlan;
2348}
2349
7697079b
AL		 2350static int nic_get_free_idx(void)
2351{
2352 int index;
2353
2354 for (index = 0; index < MAX_NICS; index++)
2355 if (!nd_table[index].used)
2356 return index;
2357 return -1;
2358}
2359
07caea31
MA		 2360int qemu_show_nic_models(const char *arg, const char *const *models)
2361{
2362 int i;
2363
2364 if (!arg || strcmp(arg, "?"))
2365 return 0;
2366
2367 fprintf(stderr, "qemu: Supported NIC models: ");
2368 for (i = 0 ; models[i]; i++)
2369 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2370 return 1;
2371}
2372
d07f22c5
AL		 2373void qemu_check_nic_model(NICInfo *nd, const char *model)
2374{
2375 const char *models[2];
2376
2377 models[0] = model;
2378 models[1] = NULL;
2379
07caea31
MA		 2380 if (qemu_show_nic_models(nd->model, models))
2381 exit(0);
2382 if (qemu_find_nic_model(nd, models, model) < 0)
2383 exit(1);
d07f22c5
AL		 2384}
2385
07caea31
MA		 2386int qemu_find_nic_model(NICInfo *nd, const char * const *models,
2387 const char *default_model)
d07f22c5 2388{
07caea31 2389 int i;
d07f22c5
AL		 2390
2391 if (!nd->model)
32a8e14a 2392 nd->model = qemu_strdup(default_model);
d07f22c5 2393
07caea31
MA		 2394 for (i = 0 ; models[i]; i++) {
2395 if (strcmp(nd->model, models[i]) == 0)
2396 return i;
d07f22c5
AL		 2397 }
2398
07caea31
MA		 2399 qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
2400 return -1;
d07f22c5
AL		 2401}
2402
c1d6eed7
MM		 2403static int net_handle_fd_param(Monitor *mon, const char *param)
2404{
2405 if (!qemu_isdigit(param[0])) {
2406 int fd;
2407
2408 fd = monitor_get_fd(mon, param);
2409 if (fd == -1) {
2410 config_error(mon, "No file descriptor named %s found", param);
2411 return -1;
2412 }
2413
2414 return fd;
2415 } else {
2416 return strtol(param, NULL, 0);
2417 }
2418}
2419
10ae5a7a 2420int net_client_init(Monitor *mon, const char *device, const char *p)
63a01ef8
AL		 2421{
2422 char buf[1024];
2423 int vlan_id, ret;
2424 VLANState *vlan;
7a9f6e4a 2425 char *name = NULL;
63a01ef8
AL		 2426
2427 vlan_id = 0;
2428 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2429 vlan_id = strtol(buf, NULL, 0);
2430 }
1a609520 2431 vlan = qemu_find_vlan(vlan_id, 1);
9036de1a 2432
7a9f6e4a 2433 if (get_param_value(buf, sizeof(buf), "name", p)) {
10ae5a7a 2434 name = qemu_strdup(buf);
7a9f6e4a 2435 }
63a01ef8 2436 if (!strcmp(device, "nic")) {
8e4416af 2437 static const char * const nic_params[] = {
eb54b6dc 2438 "vlan", "name", "macaddr", "model", "addr", "id", "vectors", NULL
8e4416af 2439 };
63a01ef8
AL		 2440 NICInfo *nd;
2441 uint8_t *macaddr;
7697079b 2442 int idx = nic_get_free_idx();
63a01ef8 2443
0aa7a205 2444 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
10ae5a7a
JK		 2445 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2446 ret = -1;
2447 goto out;
8e4416af 2448 }
7697079b 2449 if (idx == -1 || nb_nics >= MAX_NICS) {
10ae5a7a 2450 config_error(mon, "Too Many NICs\n");
771f1339
AL		 2451 ret = -1;
2452 goto out;
63a01ef8 2453 }
7697079b 2454 nd = &nd_table[idx];
d2cffe30 2455 memset(nd, 0, sizeof(*nd));
63a01ef8
AL		 2456 macaddr = nd->macaddr;
2457 macaddr[0] = 0x52;
2458 macaddr[1] = 0x54;
2459 macaddr[2] = 0x00;
2460 macaddr[3] = 0x12;
2461 macaddr[4] = 0x34;
7697079b 2462 macaddr[5] = 0x56 + idx;
63a01ef8
AL		 2463
2464 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2465 if (parse_macaddr(macaddr, buf) < 0) {
10ae5a7a 2466 config_error(mon, "invalid syntax for ethernet address\n");
771f1339
AL		 2467 ret = -1;
2468 goto out;
63a01ef8
AL		 2469 }
2470 }
2471 if (get_param_value(buf, sizeof(buf), "model", p)) {
32a8e14a 2472 nd->model = qemu_strdup(buf);
63a01ef8 2473 }
5607c388 2474 if (get_param_value(buf, sizeof(buf), "addr", p)) {
32a8e14a 2475 nd->devaddr = qemu_strdup(buf);
5607c388 2476 }
eb54b6dc 2477 if (get_param_value(buf, sizeof(buf), "id", p)) {
32a8e14a 2478 nd->id = qemu_strdup(buf);
eb54b6dc 2479 }
ffe6370c
MT		 2480 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2481 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2482 char *endptr;
2483 long vectors = strtol(buf, &endptr, 0);
2484 if (*endptr) {
2485 config_error(mon, "invalid syntax for # of vectors\n");
2486 ret = -1;
2487 goto out;
2488 }
2489 if (vectors < 0 || vectors > 0x7ffffff) {
2490 config_error(mon, "invalid # of vectors\n");
2491 ret = -1;
2492 goto out;
2493 }
2494 nd->nvectors = vectors;
2495 }
63a01ef8 2496 nd->vlan = vlan;
7a9f6e4a 2497 nd->name = name;
7697079b 2498 nd->used = 1;
7a9f6e4a 2499 name = NULL;
63a01ef8
AL		 2500 nb_nics++;
2501 vlan->nb_guest_devs++;
4d73cd3b 2502 ret = idx;
63a01ef8
AL		 2503 } else
2504 if (!strcmp(device, "none")) {
8e4416af 2505 if (*p != '\0') {
10ae5a7a
JK		 2506 config_error(mon, "'none' takes no parameters\n");
2507 ret = -1;
2508 goto out;
8e4416af 2509 }
63a01ef8
AL		 2510 /* does nothing. It is needed to signal that no network cards
2511 are wanted */
2512 ret = 0;
2513 } else
2514#ifdef CONFIG_SLIRP
2515 if (!strcmp(device, "user")) {
8e4416af 2516 static const char * const slirp_params[] = {
c92ef6a2
JK		 2517 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2518 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2519 "hostfwd", "guestfwd", NULL
8e4416af 2520 };
ad196a9d 2521 struct slirp_config_str *config;
c92ef6a2
JK		 2522 int restricted = 0;
2523 char *vnet = NULL;
2524 char *vhost = NULL;
2525 char *vhostname = NULL;
ad196a9d
JK		 2526 char *tftp_export = NULL;
2527 char *bootfile = NULL;
c92ef6a2
JK		 2528 char *vdhcp_start = NULL;
2529 char *vnamesrv = NULL;
ad196a9d 2530 char *smb_export = NULL;
c92ef6a2 2531 char *vsmbsrv = NULL;
ad196a9d 2532 const char *q;
b8e8af38 2533
0aa7a205 2534 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
10ae5a7a
JK		 2535 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2536 ret = -1;
2537 goto out;
8e4416af 2538 }
c92ef6a2 2539 if (get_param_value(buf, sizeof(buf), "ip", p)) {
3da6abd4 2540 int vnet_buflen = strlen(buf) + strlen("/24") + 1;
c92ef6a2 2541 /* emulate legacy parameter */
3da6abd4
BS		 2542 vnet = qemu_malloc(vnet_buflen);
2543 pstrcpy(vnet, vnet_buflen, buf);
2544 pstrcat(vnet, vnet_buflen, "/24");
c92ef6a2
JK		 2545 }
2546 if (get_param_value(buf, sizeof(buf), "net", p)) {
2547 vnet = qemu_strdup(buf);
2548 }
2549 if (get_param_value(buf, sizeof(buf), "host", p)) {
2550 vhost = qemu_strdup(buf);
2551 }
63a01ef8 2552 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
c92ef6a2 2553 vhostname = qemu_strdup(buf);
63a01ef8 2554 }
49ec9b40 2555 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
b8e8af38 2556 restricted = (buf[0] == 'y') ? 1 : 0;
49ec9b40 2557 }
c92ef6a2
JK		 2558 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2559 vdhcp_start = qemu_strdup(buf);
2560 }
2561 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2562 vnamesrv = qemu_strdup(buf);
49ec9b40 2563 }
ad196a9d
JK		 2564 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2565 tftp_export = qemu_strdup(buf);
2566 }
2567 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2568 bootfile = qemu_strdup(buf);
2569 }
2570 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2571 smb_export = qemu_strdup(buf);
c92ef6a2
JK		 2572 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2573 vsmbsrv = qemu_strdup(buf);
2574 }
ad196a9d
JK		 2575 }
2576 q = p;
2577 while (1) {
2578 config = qemu_malloc(sizeof(*config));
2579 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2580 "hostfwd", &q)) {
ad196a9d
JK		 2581 break;
2582 }
c92ef6a2 2583 config->flags = SLIRP_CFG_HOSTFWD;
ad196a9d
JK		 2584 config->next = slirp_configs;
2585 slirp_configs = config;
2586 config = NULL;
2587 }
2588 q = p;
2589 while (1) {
2590 config = qemu_malloc(sizeof(*config));
2591 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2592 "guestfwd", &q)) {
ad196a9d
JK		 2593 break;
2594 }
2595 config->flags = 0;
2596 config->next = slirp_configs;
2597 slirp_configs = config;
2598 config = NULL;
2599 }
2600 qemu_free(config);
63a01ef8 2601 vlan->nb_host_devs++;
c92ef6a2
JK		 2602 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2603 vhostname, tftp_export, bootfile, vdhcp_start,
2604 vnamesrv, smb_export, vsmbsrv);
3a179c66
MA		 2605 while (slirp_configs) {
2606 config = slirp_configs;
2607 slirp_configs = config->next;
2608 qemu_free(config);
2609 }
c92ef6a2
JK		 2610 qemu_free(vnet);
2611 qemu_free(vhost);
2612 qemu_free(vhostname);
ad196a9d
JK		 2613 qemu_free(tftp_export);
2614 qemu_free(bootfile);
c92ef6a2
JK		 2615 qemu_free(vdhcp_start);
2616 qemu_free(vnamesrv);
ad196a9d 2617 qemu_free(smb_export);
c92ef6a2 2618 qemu_free(vsmbsrv);
8ca9217d 2619 } else if (!strcmp(device, "channel")) {
72cf2d4f 2620 if (QTAILQ_EMPTY(&slirp_stacks)) {
ad196a9d
JK		 2621 struct slirp_config_str *config;
2622
2623 config = qemu_malloc(sizeof(*config));
2624 pstrcpy(config->str, sizeof(config->str), p);
c92ef6a2 2625 config->flags = SLIRP_CFG_LEGACY;
ad196a9d
JK		 2626 config->next = slirp_configs;
2627 slirp_configs = config;
0752706d 2628 ret = 0;
ad196a9d 2629 } else {
0752706d 2630 ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), mon, p, 1);
8ca9217d 2631 }
63a01ef8
AL		 2632 } else
2633#endif
2634#ifdef _WIN32
2635 if (!strcmp(device, "tap")) {
8e4416af
AL		 2636 static const char * const tap_params[] = {
2637 "vlan", "name", "ifname", NULL
2638 };
63a01ef8 2639 char ifname[64];
8e4416af 2640
0aa7a205 2641 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
10ae5a7a
JK		 2642 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2643 ret = -1;
2644 goto out;
8e4416af 2645 }
63a01ef8 2646 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
10ae5a7a 2647 config_error(mon, "tap: no interface name\n");
771f1339
AL		 2648 ret = -1;
2649 goto out;
63a01ef8
AL		 2650 }
2651 vlan->nb_host_devs++;
7a9f6e4a 2652 ret = tap_win32_init(vlan, device, name, ifname);
63a01ef8 2653 } else
b29fe3ed 2654#elif defined (_AIX)
63a01ef8
AL		 2655#else
2656 if (!strcmp(device, "tap")) {
0aa7a205 2657 char ifname[64], chkbuf[64];
63a01ef8 2658 char setup_script[1024], down_script[1024];
4a77b25e 2659 TAPState *s;
63a01ef8
AL		 2660 int fd;
2661 vlan->nb_host_devs++;
2662 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2663 static const char * const fd_params[] = {
2664 "vlan", "name", "fd", "sndbuf", NULL
2665 };
c1d6eed7 2666 ret = -1;
0aa7a205 2667 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a 2668 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
10ae5a7a 2669 goto out;
8e4416af 2670 }
c1d6eed7
MM		 2671 fd = net_handle_fd_param(mon, buf);
2672 if (fd == -1) {
2673 goto out;
2674 }
63a01ef8 2675 fcntl(fd, F_SETFL, O_NONBLOCK);
4a77b25e 2676 s = net_tap_fd_init(vlan, device, name, fd);
c1d6eed7
MM		 2677 if (!s) {
2678 close(fd);
2679 }
63a01ef8 2680 } else {
8e4416af 2681 static const char * const tap_params[] = {
0df0ff6d 2682 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
8e4416af 2683 };
0aa7a205 2684 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
10ae5a7a
JK		 2685 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2686 ret = -1;
2687 goto out;
8e4416af 2688 }
63a01ef8
AL		 2689 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2690 ifname[0] = '\0';
2691 }
2692 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2693 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2694 }
2695 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2696 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2697 }
4a77b25e
MM		 2698 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2699 }
2700 if (s != NULL) {
fc5b81d1 2701 const char *sndbuf_str = NULL;
0df0ff6d 2702 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
fc5b81d1 2703 sndbuf_str = buf;
0df0ff6d 2704 }
0752706d 2705 ret = tap_set_sndbuf(s, sndbuf_str, mon);
4a77b25e
MM		 2706 } else {
2707 ret = -1;
63a01ef8
AL		 2708 }
2709 } else
2710#endif
2711 if (!strcmp(device, "socket")) {
0aa7a205 2712 char chkbuf[64];
63a01ef8 2713 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2714 static const char * const fd_params[] = {
2715 "vlan", "name", "fd", NULL
2716 };
63a01ef8 2717 int fd;
c1d6eed7 2718 ret = -1;
0aa7a205 2719 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a 2720 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
10ae5a7a 2721 goto out;
8e4416af 2722 }
c1d6eed7
MM		 2723 fd = net_handle_fd_param(mon, buf);
2724 if (fd == -1) {
2725 goto out;
2726 }
2727 if (!net_socket_fd_init(vlan, device, name, fd, 1)) {
2728 close(fd);
2729 goto out;
2730 }
2731 ret = 0;
63a01ef8 2732 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
8e4416af
AL		 2733 static const char * const listen_params[] = {
2734 "vlan", "name", "listen", NULL
2735 };
0aa7a205 2736 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
10ae5a7a
JK		 2737 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2738 ret = -1;
2739 goto out;
8e4416af 2740 }
7a9f6e4a 2741 ret = net_socket_listen_init(vlan, device, name, buf);
63a01ef8 2742 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
8e4416af
AL		 2743 static const char * const connect_params[] = {
2744 "vlan", "name", "connect", NULL
2745 };
0aa7a205 2746 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
10ae5a7a
JK		 2747 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2748 ret = -1;
2749 goto out;
8e4416af 2750 }
7a9f6e4a 2751 ret = net_socket_connect_init(vlan, device, name, buf);
63a01ef8 2752 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
8e4416af
AL		 2753 static const char * const mcast_params[] = {
2754 "vlan", "name", "mcast", NULL
2755 };
0aa7a205 2756 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
10ae5a7a
JK		 2757 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2758 ret = -1;
2759 goto out;
8e4416af 2760 }
7a9f6e4a 2761 ret = net_socket_mcast_init(vlan, device, name, buf);
63a01ef8 2762 } else {
10ae5a7a 2763 config_error(mon, "Unknown socket options: %s\n", p);
771f1339
AL		 2764 ret = -1;
2765 goto out;
63a01ef8
AL		 2766 }
2767 vlan->nb_host_devs++;
2768 } else
2769#ifdef CONFIG_VDE
2770 if (!strcmp(device, "vde")) {
8e4416af
AL		 2771 static const char * const vde_params[] = {
2772 "vlan", "name", "sock", "port", "group", "mode", NULL
2773 };
63a01ef8
AL		 2774 char vde_sock[1024], vde_group[512];
2775 int vde_port, vde_mode;
8e4416af 2776
0aa7a205 2777 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
10ae5a7a
JK		 2778 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2779 ret = -1;
2780 goto out;
8e4416af 2781 }
63a01ef8
AL		 2782 vlan->nb_host_devs++;
2783 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2784 vde_sock[0] = '\0';
2785 }
2786 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2787 vde_port = strtol(buf, NULL, 10);
2788 } else {
2789 vde_port = 0;
2790 }
2791 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2792 vde_group[0] = '\0';
2793 }
2794 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2795 vde_mode = strtol(buf, NULL, 8);
2796 } else {
2797 vde_mode = 0700;
2798 }
7a9f6e4a 2799 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
63a01ef8
AL		 2800 } else
2801#endif
bb9ea79e
AL		 2802 if (!strcmp(device, "dump")) {
2803 int len = 65536;
2804
2805 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2806 len = strtol(buf, NULL, 0);
2807 }
2808 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2809 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2810 }
10ae5a7a 2811 ret = net_dump_init(mon, vlan, device, name, buf, len);
bb9ea79e 2812 } else {
10ae5a7a 2813 config_error(mon, "Unknown network device: %s\n", device);
771f1339
AL		 2814 ret = -1;
2815 goto out;
63a01ef8
AL		 2816 }
2817 if (ret < 0) {
10ae5a7a 2818 config_error(mon, "Could not initialize device '%s'\n", device);
63a01ef8 2819 }
771f1339 2820out:
10ae5a7a 2821 qemu_free(name);
63a01ef8
AL		 2822 return ret;
2823}
2824
8b13c4a7
AL		 2825void net_client_uninit(NICInfo *nd)
2826{
2827 nd->vlan->nb_guest_devs--;
2828 nb_nics--;
a9796703 2829
9203f520
MM		 2830 qemu_free(nd->model);
2831 qemu_free(nd->name);
2832 qemu_free(nd->devaddr);
2833 qemu_free(nd->id);
a9796703 2834
d2cffe30 2835 nd->used = 0;
8b13c4a7
AL		 2836}
2837
6f338c34
AL		 2838static int net_host_check_device(const char *device)
2839{
2840 int i;
bb9ea79e 2841 const char *valid_param_list[] = { "tap", "socket", "dump"
6f338c34
AL		 2842#ifdef CONFIG_SLIRP
2843 ,"user"
2844#endif
2845#ifdef CONFIG_VDE
2846 ,"vde"
2847#endif
2848 };
2849 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2850 if (!strncmp(valid_param_list[i], device,
2851 strlen(valid_param_list[i])))
2852 return 1;
2853 }
2854
2855 return 0;
2856}
2857
f18c16de 2858void net_host_device_add(Monitor *mon, const QDict *qdict)
6f338c34 2859{
f18c16de
LC		 2860 const char *device = qdict_get_str(qdict, "device");
2861 const char *opts = qdict_get_try_str(qdict, "opts");
2862
6f338c34 2863 if (!net_host_check_device(device)) {
376253ec 2864 monitor_printf(mon, "invalid host network device %s\n", device);
6f338c34
AL		 2865 return;
2866 }
10ae5a7a 2867 if (net_client_init(mon, device, opts ? opts : "") < 0) {
5c8be678
AL		 2868 monitor_printf(mon, "adding host network device %s failed\n", device);
2869 }
6f338c34
AL		 2870}
2871
f18c16de 2872void net_host_device_remove(Monitor *mon, const QDict *qdict)
6f338c34 2873{
6f338c34 2874 VLANClientState *vc;
f18c16de
LC		 2875 int vlan_id = qdict_get_int(qdict, "vlan_id");
2876 const char *device = qdict_get_str(qdict, "device");
6f338c34 2877
1a609520 2878 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
6f338c34 2879 if (!vc) {
6f338c34
AL		 2880 return;
2881 }
e8f1f9db
AL		 2882 if (!net_host_check_device(vc->model)) {
2883 monitor_printf(mon, "invalid host network device %s\n", device);
2884 return;
2885 }
6f338c34
AL		 2886 qemu_del_vlan_client(vc);
2887}
2888
63a01ef8
AL		 2889int net_client_parse(const char *str)
2890{
2891 const char *p;
2892 char *q;
2893 char device[64];
2894
2895 p = str;
2896 q = device;
2897 while (*p != '\0' && *p != ',') {
2898 if ((q - device) < sizeof(device) - 1)
2899 *q++ = *p;
2900 p++;
2901 }
2902 *q = '\0';
2903 if (*p == ',')
2904 p++;
2905
10ae5a7a 2906 return net_client_init(NULL, device, p);
63a01ef8
AL		 2907}
2908
406c8df3
GC		 2909void net_set_boot_mask(int net_boot_mask)
2910{
2911 int i;
2912
2913 /* Only the first four NICs may be bootable */
2914 net_boot_mask = net_boot_mask & 0xF;
2915
2916 for (i = 0; i < nb_nics; i++) {
2917 if (net_boot_mask & (1 << i)) {
2918 nd_table[i].bootable = 1;
2919 net_boot_mask &= ~(1 << i);
2920 }
2921 }
2922
2923 if (net_boot_mask) {
2924 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2925 exit(1);
2926 }
2927}
2928
376253ec 2929void do_info_network(Monitor *mon)
63a01ef8
AL		 2930{
2931 VLANState *vlan;
2932 VLANClientState *vc;
2933
2934 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
376253ec 2935 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
63a01ef8 2936 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
376253ec 2937 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
63a01ef8
AL		 2938 }
2939}
2940
f18c16de 2941void do_set_link(Monitor *mon, const QDict *qdict)
436e5e53
AL		 2942{
2943 VLANState *vlan;
2944 VLANClientState *vc = NULL;
f18c16de
LC		 2945 const char *name = qdict_get_str(qdict, "name");
2946 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
436e5e53
AL		 2947
2948 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2949 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2950 if (strcmp(vc->name, name) == 0)
dd5de373
EI		 2951 goto done;
2952done:
436e5e53
AL		 2953
2954 if (!vc) {
7dc3fa09 2955 monitor_printf(mon, "could not find network device '%s'\n", name);
c3cf0d3f 2956 return;
436e5e53
AL		 2957 }
2958
2959 if (strcmp(up_or_down, "up") == 0)
2960 vc->link_down = 0;
2961 else if (strcmp(up_or_down, "down") == 0)
2962 vc->link_down = 1;
2963 else
376253ec
AL		 2964 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2965 "valid\n", up_or_down);
436e5e53 2966
34b25ca7
AL		 2967 if (vc->link_status_changed)
2968 vc->link_status_changed(vc);
436e5e53
AL		 2969}
2970
63a01ef8
AL		 2971void net_cleanup(void)
2972{
2973 VLANState *vlan;
2974
63a01ef8
AL		 2975 /* close network clients */
2976 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
b946a153 2977 VLANClientState *vc = vlan->first_client;
63a01ef8 2978
b946a153
AL		 2979 while (vc) {
2980 VLANClientState *next = vc->next;
63a01ef8 2981
b946a153
AL		 2982 qemu_del_vlan_client(vc);
2983
2984 vc = next;
63a01ef8
AL		 2985 }
2986 }
63a01ef8
AL		 2987}
2988
2989void net_client_check(void)
2990{
2991 VLANState *vlan;
2992
2993 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2994 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2995 continue;
2996 if (vlan->nb_guest_devs == 0)
2997 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2998 if (vlan->nb_host_devs == 0)
2999 fprintf(stderr,
3000 "Warning: vlan %d is not connected to host network\n",
3001 vlan->id);
3002 }
3003}
Qemu copy for testing