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net: allow NICs to be connected to netdevs
[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"
f83c6e10 113#include "qemu-config.h"
511d2b14 114
d918f23e 115#include "slirp/libslirp.h"
511d2b14 116
5610c3aa 117static QTAILQ_HEAD(, VLANState) vlans;
577c4af9 118static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
63a01ef8
AL		 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
5610c3aa 289 QTAILQ_FOREACH(vlan, &vlans, next) {
676cff29
AL		 290 VLANClientState *vc;
291
5610c3aa
MM		 292 QTAILQ_FOREACH(vc, &vlan->clients, next) {
293 if (vc != vc1 && strcmp(vc->model, model) == 0) {
676cff29 294 id++;
5610c3aa
MM		 295 }
296 }
676cff29
AL		 297 }
298
299 snprintf(buf, sizeof(buf), "%s.%d", model, id);
300
02374aa0 301 return qemu_strdup(buf);
676cff29
AL		 302}
303
63a01ef8 304VLANClientState *qemu_new_vlan_client(VLANState *vlan,
283c7c63 305 VLANClientState *peer,
bf38c1a0 306 const char *model,
7a9f6e4a 307 const char *name,
cda9046b
MM		 308 NetCanReceive *can_receive,
309 NetReceive *receive,
310 NetReceiveIOV *receive_iov,
b946a153 311 NetCleanup *cleanup,
63a01ef8
AL		 312 void *opaque)
313{
5610c3aa
MM		 314 VLANClientState *vc;
315
63a01ef8 316 vc = qemu_mallocz(sizeof(VLANClientState));
5610c3aa 317
02374aa0 318 vc->model = qemu_strdup(model);
7a9f6e4a 319 if (name)
02374aa0 320 vc->name = qemu_strdup(name);
7a9f6e4a
AL		 321 else
322 vc->name = assign_name(vc, model);
cda9046b
MM		 323 vc->can_receive = can_receive;
324 vc->receive = receive;
325 vc->receive_iov = receive_iov;
b946a153 326 vc->cleanup = cleanup;
63a01ef8 327 vc->opaque = opaque;
5610c3aa 328
d80b9fc6 329 if (vlan) {
283c7c63 330 assert(!peer);
d80b9fc6
MM		 331 vc->vlan = vlan;
332 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
577c4af9 333 } else {
283c7c63
MM		 334 if (peer) {
335 vc->peer = peer;
336 peer->peer = vc;
337 }
577c4af9 338 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
d80b9fc6 339 }
63a01ef8 340
63a01ef8
AL		 341 return vc;
342}
343
344void qemu_del_vlan_client(VLANClientState *vc)
345{
d80b9fc6
MM		 346 if (vc->vlan) {
347 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
577c4af9
MM		 348 } else {
349 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
283c7c63
MM		 350 if (vc->peer) {
351 vc->peer->peer = NULL;
352 }
d80b9fc6 353 }
63a01ef8 354
5610c3aa
MM		 355 if (vc->cleanup) {
356 vc->cleanup(vc);
357 }
358
359 qemu_free(vc->name);
360 qemu_free(vc->model);
361 qemu_free(vc);
63a01ef8
AL		 362}
363
8b13c4a7
AL		 364VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
365{
5610c3aa 366 VLANClientState *vc;
8b13c4a7 367
5610c3aa
MM		 368 QTAILQ_FOREACH(vc, &vlan->clients, next) {
369 if (vc->opaque == opaque) {
370 return vc;
371 }
372 }
8b13c4a7
AL		 373
374 return NULL;
375}
376
1a609520
JK		 377static VLANClientState *
378qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
379 const char *client_str)
380{
381 VLANState *vlan;
382 VLANClientState *vc;
383
384 vlan = qemu_find_vlan(vlan_id, 0);
385 if (!vlan) {
386 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
387 return NULL;
388 }
389
5610c3aa 390 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1a609520
JK		 391 if (!strcmp(vc->name, client_str)) {
392 break;
393 }
394 }
395 if (!vc) {
396 monitor_printf(mon, "can't find device %s on VLAN %d\n",
397 client_str, vlan_id);
398 }
399
400 return vc;
401}
402
2e1e0641 403int qemu_can_send_packet(VLANClientState *sender)
63a01ef8 404{
2e1e0641 405 VLANState *vlan = sender->vlan;
63a01ef8
AL		 406 VLANClientState *vc;
407
d80b9fc6
MM		 408 if (!sender->vlan) {
409 return 1;
410 }
411
5610c3aa 412 QTAILQ_FOREACH(vc, &vlan->clients, next) {
2e1e0641
MM		 413 if (vc == sender) {
414 continue;
415 }
416
cda9046b 417 /* no can_receive() handler, they can always receive */
e3f5ec2b 418 if (!vc->can_receive || vc->can_receive(vc)) {
2e1e0641 419 return 1;
63a01ef8
AL		 420 }
421 }
422 return 0;
423}
424
3e021d40 425static int
764a4d1d 426qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
63a01ef8 427{
63a01ef8 428 VLANClientState *vc;
3e021d40 429 int ret = -1;
63a01ef8 430
e94667b9
MM		 431 sender->vlan->delivering = 1;
432
5610c3aa 433 QTAILQ_FOREACH(vc, &sender->vlan->clients, next) {
3e021d40
MM		 434 ssize_t len;
435
436 if (vc == sender) {
437 continue;
764a4d1d 438 }
3e021d40
MM		 439
440 if (vc->link_down) {
441 ret = size;
442 continue;
443 }
444
445 len = vc->receive(vc, buf, size);
446
447 ret = (ret >= 0) ? ret : len;
764a4d1d 448 }
3e021d40 449
e94667b9
MM		 450 sender->vlan->delivering = 0;
451
3e021d40 452 return ret;
764a4d1d
AL		 453}
454
8cad5516
MM		 455void qemu_purge_queued_packets(VLANClientState *vc)
456{
9da43187 457 VLANPacket *packet, *next;
8cad5516 458
d80b9fc6
MM		 459 if (!vc->vlan)
460 return;
461
72cf2d4f 462 QTAILQ_FOREACH_SAFE(packet, &vc->vlan->send_queue, entry, next) {
8cad5516 463 if (packet->sender == vc) {
72cf2d4f 464 QTAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
8cad5516 465 qemu_free(packet);
8cad5516
MM		 466 }
467 }
468}
469
f3b6c7fc 470void qemu_flush_queued_packets(VLANClientState *vc)
e94667b9 471{
d80b9fc6
MM		 472 if (!vc->vlan)
473 return;
474
72cf2d4f 475 while (!QTAILQ_EMPTY(&vc->vlan->send_queue)) {
9da43187 476 VLANPacket *packet;
f3b6c7fc
MM		 477 int ret;
478
72cf2d4f
BS		 479 packet = QTAILQ_FIRST(&vc->vlan->send_queue);
480 QTAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
f3b6c7fc
MM		 481
482 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
483 if (ret == 0 && packet->sent_cb != NULL) {
72cf2d4f 484 QTAILQ_INSERT_HEAD(&vc->vlan->send_queue, packet, entry);
f3b6c7fc
MM		 485 break;
486 }
487
488 if (packet->sent_cb)
783527a9 489 packet->sent_cb(packet->sender, ret);
f3b6c7fc 490
e94667b9
MM		 491 qemu_free(packet);
492 }
493}
494
f3b6c7fc
MM		 495static void qemu_enqueue_packet(VLANClientState *sender,
496 const uint8_t *buf, int size,
497 NetPacketSent *sent_cb)
e94667b9
MM		 498{
499 VLANPacket *packet;
500
501 packet = qemu_malloc(sizeof(VLANPacket) + size);
e94667b9
MM		 502 packet->sender = sender;
503 packet->size = size;
f3b6c7fc 504 packet->sent_cb = sent_cb;
e94667b9 505 memcpy(packet->data, buf, size);
9da43187 506
72cf2d4f 507 QTAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
e94667b9
MM		 508}
509
f3b6c7fc
MM		 510ssize_t qemu_send_packet_async(VLANClientState *sender,
511 const uint8_t *buf, int size,
512 NetPacketSent *sent_cb)
764a4d1d 513{
f3b6c7fc 514 int ret;
764a4d1d 515
d80b9fc6 516 if (sender->link_down || !sender->vlan) {
f3b6c7fc
MM		 517 return size;
518 }
436e5e53 519
63a01ef8 520#ifdef DEBUG_NET
d80b9fc6 521 printf("qemu_send_packet_async:\n");
63a01ef8
AL		 522 hex_dump(stdout, buf, size);
523#endif
f3b6c7fc
MM		 524
525 if (sender->vlan->delivering) {
526 qemu_enqueue_packet(sender, buf, size, NULL);
527 return size;
528 }
529
530 ret = qemu_deliver_packet(sender, buf, size);
531 if (ret == 0 && sent_cb != NULL) {
532 qemu_enqueue_packet(sender, buf, size, sent_cb);
533 return 0;
63a01ef8 534 }
e94667b9 535
f3b6c7fc
MM		 536 qemu_flush_queued_packets(sender);
537
538 return ret;
539}
540
541void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
542{
543 qemu_send_packet_async(vc, buf, size, NULL);
63a01ef8
AL		 544}
545
fbe78f4f
AL		 546static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
547 int iovcnt)
548{
549 uint8_t buffer[4096];
550 size_t offset = 0;
551 int i;
552
553 for (i = 0; i < iovcnt; i++) {
554 size_t len;
555
556 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
557 memcpy(buffer + offset, iov[i].iov_base, len);
558 offset += len;
559 }
560
f3b6c7fc 561 return vc->receive(vc, buffer, offset);
fbe78f4f
AL		 562}
563
e0e7877a
AL		 564static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
565{
566 size_t offset = 0;
567 int i;
568
569 for (i = 0; i < iovcnt; i++)
570 offset += iov[i].iov_len;
571 return offset;
572}
573
e94667b9
MM		 574static int qemu_deliver_packet_iov(VLANClientState *sender,
575 const struct iovec *iov, int iovcnt)
fbe78f4f 576{
fbe78f4f 577 VLANClientState *vc;
e94667b9
MM		 578 int ret = -1;
579
580 sender->vlan->delivering = 1;
581
5610c3aa 582 QTAILQ_FOREACH(vc, &sender->vlan->clients, next) {
e94667b9
MM		 583 ssize_t len;
584
585 if (vc == sender) {
586 continue;
587 }
588
589 if (vc->link_down) {
590 ret = calc_iov_length(iov, iovcnt);
591 continue;
592 }
593
594 if (vc->receive_iov) {
595 len = vc->receive_iov(vc, iov, iovcnt);
596 } else {
597 len = vc_sendv_compat(vc, iov, iovcnt);
598 }
599
600 ret = (ret >= 0) ? ret : len;
601 }
602
603 sender->vlan->delivering = 0;
604
605 return ret;
606}
607
608static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
f3b6c7fc
MM		 609 const struct iovec *iov, int iovcnt,
610 NetPacketSent *sent_cb)
e94667b9 611{
c27ff608 612 VLANPacket *packet;
e94667b9 613 size_t max_len = 0;
c27ff608 614 int i;
fbe78f4f 615
e94667b9 616 max_len = calc_iov_length(iov, iovcnt);
e0e7877a 617
e94667b9 618 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
e94667b9 619 packet->sender = sender;
f3b6c7fc 620 packet->sent_cb = sent_cb;
e94667b9 621 packet->size = 0;
c27ff608 622
e94667b9
MM		 623 for (i = 0; i < iovcnt; i++) {
624 size_t len = iov[i].iov_len;
c27ff608 625
e94667b9
MM		 626 memcpy(packet->data + packet->size, iov[i].iov_base, len);
627 packet->size += len;
628 }
fbe78f4f 629
72cf2d4f 630 QTAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
fbe78f4f 631
e94667b9
MM		 632 return packet->size;
633}
fbe78f4f 634
f3b6c7fc
MM		 635ssize_t qemu_sendv_packet_async(VLANClientState *sender,
636 const struct iovec *iov, int iovcnt,
637 NetPacketSent *sent_cb)
e94667b9
MM		 638{
639 int ret;
640
d80b9fc6 641 if (sender->link_down || !sender->vlan) {
e94667b9
MM		 642 return calc_iov_length(iov, iovcnt);
643 }
644
645 if (sender->vlan->delivering) {
f3b6c7fc 646 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
fbe78f4f
AL		 647 }
648
e94667b9 649 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
f3b6c7fc
MM		 650 if (ret == 0 && sent_cb != NULL) {
651 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
652 return 0;
653 }
e94667b9
MM		 654
655 qemu_flush_queued_packets(sender);
656
657 return ret;
fbe78f4f
AL		 658}
659
f3b6c7fc
MM		 660ssize_t
661qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
662{
663 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
664}
665
63a01ef8
AL		 666#if defined(CONFIG_SLIRP)
667
668/* slirp network adapter */
669
c92ef6a2
JK		 670#define SLIRP_CFG_HOSTFWD 1
671#define SLIRP_CFG_LEGACY 2
ad196a9d 672
b8e8af38
JK		 673struct slirp_config_str {
674 struct slirp_config_str *next;
ad196a9d
JK		 675 int flags;
676 char str[1024];
c92ef6a2 677 int legacy_format;
b8e8af38
JK		 678};
679
9f8bd042 680typedef struct SlirpState {
72cf2d4f 681 QTAILQ_ENTRY(SlirpState) entry;
9f8bd042
JK		 682 VLANClientState *vc;
683 Slirp *slirp;
28432466
JK		 684#ifndef _WIN32
685 char smb_dir[128];
686#endif
9f8bd042
JK		 687} SlirpState;
688
ad196a9d
JK		 689static struct slirp_config_str *slirp_configs;
690const char *legacy_tftp_prefix;
691const char *legacy_bootp_filename;
72cf2d4f
BS		 692static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
693 QTAILQ_HEAD_INITIALIZER(slirp_stacks);
63a01ef8 694
fb12577c 695static int slirp_hostfwd(SlirpState *s, const char *redir_str,
0752706d 696 int legacy_format);
fb12577c 697static int slirp_guestfwd(SlirpState *s, const char *config_str,
3c6a0580 698 int legacy_format);
ad196a9d 699
c5b76b38 700#ifndef _WIN32
ad196a9d
JK		 701static const char *legacy_smb_export;
702
fb12577c 703static int slirp_smb(SlirpState *s, const char *exported_dir,
0752706d 704 struct in_addr vserver_addr);
28432466
JK		 705static void slirp_smb_cleanup(SlirpState *s);
706#else
707static inline void slirp_smb_cleanup(SlirpState *s) { }
c5b76b38 708#endif
b8e8af38 709
9f8bd042 710int slirp_can_output(void *opaque)
63a01ef8 711{
9f8bd042
JK		 712 SlirpState *s = opaque;
713
714 return qemu_can_send_packet(s->vc);
63a01ef8
AL		 715}
716
9f8bd042 717void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
63a01ef8 718{
9f8bd042
JK		 719 SlirpState *s = opaque;
720
63a01ef8
AL		 721#ifdef DEBUG_SLIRP
722 printf("slirp output:\n");
723 hex_dump(stdout, pkt, pkt_len);
724#endif
9f8bd042 725 qemu_send_packet(s->vc, pkt, pkt_len);
63a01ef8
AL		 726}
727
4f1c942b 728static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 729{
9f8bd042
JK		 730 SlirpState *s = vc->opaque;
731
63a01ef8
AL		 732#ifdef DEBUG_SLIRP
733 printf("slirp input:\n");
734 hex_dump(stdout, buf, size);
735#endif
9f8bd042 736 slirp_input(s->slirp, buf, size);
4f1c942b 737 return size;
63a01ef8
AL		 738}
739
8d6249a7
AL		 740static void net_slirp_cleanup(VLANClientState *vc)
741{
ad0d8c4c
JK		 742 SlirpState *s = vc->opaque;
743
744 slirp_cleanup(s->slirp);
28432466 745 slirp_smb_cleanup(s);
72cf2d4f 746 QTAILQ_REMOVE(&slirp_stacks, s, entry);
ad0d8c4c 747 qemu_free(s);
8d6249a7
AL		 748}
749
fb12577c 750static int net_slirp_init(VLANState *vlan, const char *model,
c92ef6a2
JK		 751 const char *name, int restricted,
752 const char *vnetwork, const char *vhost,
753 const char *vhostname, const char *tftp_export,
754 const char *bootfile, const char *vdhcp_start,
755 const char *vnameserver, const char *smb_export,
756 const char *vsmbserver)
63a01ef8 757{
ad0d8c4c 758 /* default settings according to historic slirp */
8389e7f4
AL		 759 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
760 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
ad0d8c4c
JK		 761 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
762 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
763 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
c92ef6a2 764#ifndef _WIN32
ad0d8c4c 765 struct in_addr smbsrv = { .s_addr = 0 };
c92ef6a2 766#endif
ad0d8c4c
JK		 767 SlirpState *s;
768 char buf[20];
769 uint32_t addr;
770 int shift;
771 char *end;
3a179c66 772 struct slirp_config_str *config;
ad0d8c4c
JK		 773
774 if (!tftp_export) {
775 tftp_export = legacy_tftp_prefix;
776 }
777 if (!bootfile) {
778 bootfile = legacy_bootp_filename;
779 }
c92ef6a2 780
ad0d8c4c
JK		 781 if (vnetwork) {
782 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
783 if (!inet_aton(vnetwork, &net)) {
784 return -1;
785 }
786 addr = ntohl(net.s_addr);
787 if (!(addr & 0x80000000)) {
788 mask.s_addr = htonl(0xff000000); /* class A */
789 } else if ((addr & 0xfff00000) == 0xac100000) {
790 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
791 } else if ((addr & 0xc0000000) == 0x80000000) {
792 mask.s_addr = htonl(0xffff0000); /* class B */
793 } else if ((addr & 0xffff0000) == 0xc0a80000) {
794 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
795 } else if ((addr & 0xffff0000) == 0xc6120000) {
796 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
797 } else if ((addr & 0xe0000000) == 0xe0000000) {
798 mask.s_addr = htonl(0xffffff00); /* class C */
c92ef6a2 799 } else {
ad0d8c4c
JK		 800 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
801 }
802 } else {
803 if (!inet_aton(buf, &net)) {
804 return -1;
805 }
806 shift = strtol(vnetwork, &end, 10);
807 if (*end != '\0') {
808 if (!inet_aton(vnetwork, &mask)) {
c92ef6a2 809 return -1;
c92ef6a2 810 }
ad0d8c4c
JK		 811 } else if (shift < 4 || shift > 32) {
812 return -1;
813 } else {
814 mask.s_addr = htonl(0xffffffff << (32 - shift));
c92ef6a2 815 }
c92ef6a2 816 }
ad0d8c4c
JK		 817 net.s_addr &= mask.s_addr;
818 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
819 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
820 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
821 }
c92ef6a2 822
ad0d8c4c
JK		 823 if (vhost && !inet_aton(vhost, &host)) {
824 return -1;
825 }
826 if ((host.s_addr & mask.s_addr) != net.s_addr) {
827 return -1;
828 }
c92ef6a2 829
ad0d8c4c
JK		 830 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
831 return -1;
832 }
833 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
834 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
835 return -1;
836 }
c92ef6a2 837
ad0d8c4c
JK		 838 if (vnameserver && !inet_aton(vnameserver, &dns)) {
839 return -1;
840 }
841 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
842 dns.s_addr == host.s_addr) {
843 return -1;
844 }
c92ef6a2
JK		 845
846#ifndef _WIN32
ad0d8c4c
JK		 847 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
848 return -1;
849 }
c92ef6a2
JK		 850#endif
851
ad0d8c4c
JK		 852 s = qemu_mallocz(sizeof(SlirpState));
853 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
854 tftp_export, bootfile, dhcp, dns, s);
72cf2d4f 855 QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
b8e8af38 856
3a179c66 857 for (config = slirp_configs; config; config = config->next) {
ad0d8c4c 858 if (config->flags & SLIRP_CFG_HOSTFWD) {
fb12577c 859 if (slirp_hostfwd(s, config->str,
0752706d
MA		 860 config->flags & SLIRP_CFG_LEGACY) < 0)
861 return -1;
ad0d8c4c 862 } else {
fb12577c 863 if (slirp_guestfwd(s, config->str,
0752706d
MA		 864 config->flags & SLIRP_CFG_LEGACY) < 0)
865 return -1;
b8e8af38 866 }
ad0d8c4c 867 }
b8e8af38 868#ifndef _WIN32
ad0d8c4c
JK		 869 if (!smb_export) {
870 smb_export = legacy_smb_export;
871 }
872 if (smb_export) {
fb12577c 873 if (slirp_smb(s, smb_export, smbsrv) < 0)
0752706d 874 return -1;
63a01ef8 875 }
ad0d8c4c 876#endif
b8e8af38 877
283c7c63
MM		 878 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
879 slirp_receive, NULL,
9f8bd042 880 net_slirp_cleanup, s);
fc57bc57
JK		 881 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
882 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
63a01ef8
AL		 883 return 0;
884}
885
f13b572c
JK		 886static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
887 const char *stack)
888{
889 VLANClientState *vc;
890
891 if (vlan) {
892 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
893 if (!vc) {
894 return NULL;
895 }
896 if (strcmp(vc->model, "user")) {
897 monitor_printf(mon, "invalid device specified\n");
898 return NULL;
899 }
900 return vc->opaque;
901 } else {
72cf2d4f 902 if (QTAILQ_EMPTY(&slirp_stacks)) {
f13b572c
JK		 903 monitor_printf(mon, "user mode network stack not in use\n");
904 return NULL;
905 }
72cf2d4f 906 return QTAILQ_FIRST(&slirp_stacks);
f13b572c
JK		 907 }
908}
909
1d4daa91 910void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
c1261d8d 911{
3c6a0580 912 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c1261d8d
AG		 913 int host_port;
914 char buf[256] = "";
f13b572c
JK		 915 const char *src_str, *p;
916 SlirpState *s;
c1261d8d 917 int is_udp = 0;
9c12a6f2 918 int err;
1d4daa91
LC		 919 const char *arg1 = qdict_get_str(qdict, "arg1");
920 const char *arg2 = qdict_get_try_str(qdict, "arg2");
921 const char *arg3 = qdict_get_try_str(qdict, "arg3");
c1261d8d 922
f13b572c
JK		 923 if (arg2) {
924 s = slirp_lookup(mon, arg1, arg2);
925 src_str = arg3;
926 } else {
927 s = slirp_lookup(mon, NULL, NULL);
928 src_str = arg1;
929 }
930 if (!s) {
c1261d8d 931 return;
f3546deb 932 }
c1261d8d 933
3c6a0580 934 if (!src_str || !src_str[0])
c1261d8d
AG		 935 goto fail_syntax;
936
f13b572c 937 p = src_str;
c1261d8d
AG		 938 get_str_sep(buf, sizeof(buf), &p, ':');
939
940 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
941 is_udp = 0;
942 } else if (!strcmp(buf, "udp")) {
943 is_udp = 1;
944 } else {
945 goto fail_syntax;
946 }
947
3c6a0580
JK		 948 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
949 goto fail_syntax;
950 }
951 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
952 goto fail_syntax;
953 }
954
c1261d8d
AG		 955 host_port = atoi(p);
956
72cf2d4f 957 err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
9f8bd042 958 host_addr, host_port);
c1261d8d 959
9c12a6f2
JK		 960 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
961 err ? "removed" : "not found");
c1261d8d
AG		 962 return;
963
964 fail_syntax:
965 monitor_printf(mon, "invalid format\n");
966}
967
fb12577c 968static int slirp_hostfwd(SlirpState *s, const char *redir_str,
0752706d 969 int legacy_format)
63a01ef8 970{
3c6a0580 971 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c92ef6a2 972 struct in_addr guest_addr = { .s_addr = 0 };
63a01ef8 973 int host_port, guest_port;
b8e8af38 974 const char *p;
c92ef6a2 975 char buf[256];
b8e8af38 976 int is_udp;
c92ef6a2 977 char *end;
1c6ed9f3 978
63a01ef8 979 p = redir_str;
f13b572c 980 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 981 goto fail_syntax;
b8e8af38 982 }
d4ebe193 983 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
63a01ef8
AL		 984 is_udp = 0;
985 } else if (!strcmp(buf, "udp")) {
986 is_udp = 1;
987 } else {
d4ebe193 988 goto fail_syntax;
63a01ef8
AL		 989 }
990
3c6a0580
JK		 991 if (!legacy_format) {
992 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
993 goto fail_syntax;
994 }
995 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
996 goto fail_syntax;
997 }
998 }
999
1000 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
d4ebe193 1001 goto fail_syntax;
b8e8af38 1002 }
c92ef6a2
JK		 1003 host_port = strtol(buf, &end, 0);
1004 if (*end != '\0' || host_port < 1 || host_port > 65535) {
d4ebe193 1005 goto fail_syntax;
b8e8af38 1006 }
63a01ef8 1007
b8e8af38 1008 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 1009 goto fail_syntax;
b8e8af38 1010 }
c92ef6a2 1011 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
d4ebe193 1012 goto fail_syntax;
b8e8af38 1013 }
63a01ef8 1014
c92ef6a2
JK		 1015 guest_port = strtol(p, &end, 0);
1016 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
d4ebe193 1017 goto fail_syntax;
b8e8af38 1018 }
63a01ef8 1019
9f8bd042
JK		 1020 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1021 guest_port) < 0) {
fb12577c
MA		 1022 qemu_error("could not set up host forwarding rule '%s'\n",
1023 redir_str);
0752706d 1024 return -1;
63a01ef8 1025 }
0752706d 1026 return 0;
d4ebe193
AL		 1027
1028 fail_syntax:
fb12577c 1029 qemu_error("invalid host forwarding rule '%s'\n", redir_str);
0752706d 1030 return -1;
63a01ef8
AL		 1031}
1032
1d4daa91 1033void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
b8e8af38 1034{
f13b572c
JK		 1035 const char *redir_str;
1036 SlirpState *s;
1d4daa91
LC		 1037 const char *arg1 = qdict_get_str(qdict, "arg1");
1038 const char *arg2 = qdict_get_try_str(qdict, "arg2");
1039 const char *arg3 = qdict_get_try_str(qdict, "arg3");
f13b572c
JK		 1040
1041 if (arg2) {
1042 s = slirp_lookup(mon, arg1, arg2);
1043 redir_str = arg3;
1044 } else {
1045 s = slirp_lookup(mon, NULL, NULL);
1046 redir_str = arg1;
1047 }
1048 if (s) {
fb12577c 1049 slirp_hostfwd(s, redir_str, 0);
b8e8af38
JK		 1050 }
1051
f3546deb
JK		 1052}
1053
0752706d 1054int net_slirp_redir(const char *redir_str)
f3546deb
JK		 1055{
1056 struct slirp_config_str *config;
1057
72cf2d4f 1058 if (QTAILQ_EMPTY(&slirp_stacks)) {
f3546deb
JK		 1059 config = qemu_malloc(sizeof(*config));
1060 pstrcpy(config->str, sizeof(config->str), redir_str);
3c6a0580 1061 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
f3546deb
JK		 1062 config->next = slirp_configs;
1063 slirp_configs = config;
0752706d 1064 return 0;
b8e8af38
JK		 1065 }
1066
fb12577c 1067 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
b8e8af38
JK		 1068}
1069
63a01ef8
AL		 1070#ifndef _WIN32
1071
63a01ef8 1072/* automatic user mode samba server configuration */
28432466 1073static void slirp_smb_cleanup(SlirpState *s)
63a01ef8 1074{
28432466 1075 char cmd[128];
09c18925 1076
28432466
JK		 1077 if (s->smb_dir[0] != '\0') {
1078 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1079 system(cmd);
1080 s->smb_dir[0] = '\0';
1081 }
63a01ef8
AL		 1082}
1083
fb12577c 1084static int slirp_smb(SlirpState* s, const char *exported_dir,
0752706d 1085 struct in_addr vserver_addr)
63a01ef8 1086{
28432466
JK		 1087 static int instance;
1088 char smb_conf[128];
1089 char smb_cmdline[128];
63a01ef8
AL		 1090 FILE *f;
1091
28432466
JK		 1092 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1093 (long)getpid(), instance++);
1094 if (mkdir(s->smb_dir, 0700) < 0) {
fb12577c 1095 qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
0752706d 1096 return -1;
63a01ef8 1097 }
28432466 1098 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
63a01ef8
AL		 1099
1100 f = fopen(smb_conf, "w");
1101 if (!f) {
28432466 1102 slirp_smb_cleanup(s);
fb12577c
MA		 1103 qemu_error("could not create samba server configuration file '%s'\n",
1104 smb_conf);
0752706d 1105 return -1;
63a01ef8
AL		 1106 }
1107 fprintf(f,
1108 "[global]\n"
1109 "private dir=%s\n"
1110 "smb ports=0\n"
1111 "socket address=127.0.0.1\n"
1112 "pid directory=%s\n"
1113 "lock directory=%s\n"
1114 "log file=%s/log.smbd\n"
1115 "smb passwd file=%s/smbpasswd\n"
1116 "security = share\n"
1117 "[qemu]\n"
1118 "path=%s\n"
1119 "read only=no\n"
1120 "guest ok=yes\n",
28432466
JK		 1121 s->smb_dir,
1122 s->smb_dir,
1123 s->smb_dir,
1124 s->smb_dir,
1125 s->smb_dir,
63a01ef8
AL		 1126 exported_dir
1127 );
1128 fclose(f);
63a01ef8
AL		 1129
1130 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1131 SMBD_COMMAND, smb_conf);
1132
bb53fc53 1133 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
28432466 1134 slirp_smb_cleanup(s);
fb12577c 1135 qemu_error("conflicting/invalid smbserver address\n");
0752706d 1136 return -1;
c92ef6a2 1137 }
0752706d 1138 return 0;
63a01ef8
AL		 1139}
1140
ad196a9d 1141/* automatic user mode samba server configuration (legacy interface) */
0752706d 1142int net_slirp_smb(const char *exported_dir)
b8e8af38 1143{
c92ef6a2
JK		 1144 struct in_addr vserver_addr = { .s_addr = 0 };
1145
ad196a9d 1146 if (legacy_smb_export) {
b8e8af38 1147 fprintf(stderr, "-smb given twice\n");
0752706d 1148 return -1;
b8e8af38 1149 }
ad196a9d 1150 legacy_smb_export = exported_dir;
72cf2d4f 1151 if (!QTAILQ_EMPTY(&slirp_stacks)) {
fb12577c 1152 return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
0752706d 1153 vserver_addr);
b8e8af38 1154 }
0752706d 1155 return 0;
b8e8af38
JK		 1156}
1157
63a01ef8 1158#endif /* !defined(_WIN32) */
b8e8af38 1159
c92ef6a2 1160struct GuestFwd {
8ca9217d 1161 CharDriverState *hd;
c92ef6a2 1162 struct in_addr server;
8ca9217d 1163 int port;
9f8bd042 1164 Slirp *slirp;
511d2b14 1165};
8ca9217d 1166
c92ef6a2 1167static int guestfwd_can_read(void *opaque)
8ca9217d 1168{
c92ef6a2 1169 struct GuestFwd *fwd = opaque;
9f8bd042 1170 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
8ca9217d
AL		 1171}
1172
c92ef6a2 1173static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
8ca9217d 1174{
c92ef6a2 1175 struct GuestFwd *fwd = opaque;
9f8bd042 1176 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
8ca9217d
AL		 1177}
1178
fb12577c 1179static int slirp_guestfwd(SlirpState *s, const char *config_str,
0752706d 1180 int legacy_format)
ad196a9d 1181{
c92ef6a2
JK		 1182 struct in_addr server = { .s_addr = 0 };
1183 struct GuestFwd *fwd;
1184 const char *p;
1185 char buf[128];
1186 char *end;
ad196a9d
JK		 1187 int port;
1188
c92ef6a2
JK		 1189 p = config_str;
1190 if (legacy_format) {
1191 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1192 goto fail_syntax;
1193 }
1194 } else {
1195 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1196 goto fail_syntax;
1197 }
1198 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1199 goto fail_syntax;
1200 }
1201 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1202 goto fail_syntax;
1203 }
1204 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1205 goto fail_syntax;
1206 }
1207 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1208 goto fail_syntax;
1209 }
1210 }
1211 port = strtol(buf, &end, 10);
1212 if (*end != '\0' || port < 1 || port > 65535) {
1213 goto fail_syntax;
ad196a9d 1214 }
ad196a9d 1215
c92ef6a2
JK		 1216 fwd = qemu_malloc(sizeof(struct GuestFwd));
1217 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1218 fwd->hd = qemu_chr_open(buf, p, NULL);
1219 if (!fwd->hd) {
fb12577c 1220 qemu_error("could not open guest forwarding device '%s'\n", buf);
c92ef6a2 1221 qemu_free(fwd);
0752706d 1222 return -1;
ad196a9d 1223 }
ad196a9d 1224
bb53fc53 1225 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
fb12577c
MA		 1226 qemu_error("conflicting/invalid host:port in guest forwarding "
1227 "rule '%s'\n", config_str);
c92ef6a2 1228 qemu_free(fwd);
0752706d 1229 return -1;
c92ef6a2 1230 }
bb53fc53
JK		 1231 fwd->server = server;
1232 fwd->port = port;
1233 fwd->slirp = s->slirp;
1234
c92ef6a2
JK		 1235 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1236 NULL, fwd);
0752706d 1237 return 0;
c92ef6a2
JK		 1238
1239 fail_syntax:
fb12577c 1240 qemu_error("invalid guest forwarding rule '%s'\n", config_str);
0752706d 1241 return -1;
ad196a9d
JK		 1242}
1243
6dbe553f
JK		 1244void do_info_usernet(Monitor *mon)
1245{
b1c99fcd 1246 SlirpState *s;
9f8bd042 1247
72cf2d4f 1248 QTAILQ_FOREACH(s, &slirp_stacks, entry) {
b1c99fcd
JK		 1249 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1250 slirp_connection_info(s->slirp, mon);
9f8bd042 1251 }
6dbe553f
JK		 1252}
1253
63a01ef8
AL		 1254#endif /* CONFIG_SLIRP */
1255
1256#if !defined(_WIN32)
1257
1258typedef struct TAPState {
1259 VLANClientState *vc;
1260 int fd;
1261 char down_script[1024];
973cbd37 1262 char down_script_arg[128];
5b01e886 1263 uint8_t buf[4096];
b664e367 1264 unsigned int read_poll : 1;
1f7babf6 1265 unsigned int write_poll : 1;
63a01ef8
AL		 1266} TAPState;
1267
b946a153
AL		 1268static int launch_script(const char *setup_script, const char *ifname, int fd);
1269
b664e367
MM		 1270static int tap_can_send(void *opaque);
1271static void tap_send(void *opaque);
1f7babf6 1272static void tap_writable(void *opaque);
b664e367
MM		 1273
1274static void tap_update_fd_handler(TAPState *s)
1275{
1276 qemu_set_fd_handler2(s->fd,
1277 s->read_poll ? tap_can_send : NULL,
1278 s->read_poll ? tap_send : NULL,
1f7babf6 1279 s->write_poll ? tap_writable : NULL,
b664e367
MM		 1280 s);
1281}
1282
1283static void tap_read_poll(TAPState *s, int enable)
1284{
1285 s->read_poll = !!enable;
1286 tap_update_fd_handler(s);
1287}
1288
1f7babf6
MM		 1289static void tap_write_poll(TAPState *s, int enable)
1290{
1291 s->write_poll = !!enable;
1292 tap_update_fd_handler(s);
1293}
1294
1295static void tap_writable(void *opaque)
1296{
1297 TAPState *s = opaque;
1298
1299 tap_write_poll(s, 0);
1300
1301 qemu_flush_queued_packets(s->vc);
1302}
1303
e3f5ec2b 1304static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
b535b7b2
AL		 1305 int iovcnt)
1306{
e3f5ec2b 1307 TAPState *s = vc->opaque;
b535b7b2
AL		 1308 ssize_t len;
1309
1310 do {
1311 len = writev(s->fd, iov, iovcnt);
1f7babf6
MM		 1312 } while (len == -1 && errno == EINTR);
1313
1314 if (len == -1 && errno == EAGAIN) {
1315 tap_write_poll(s, 1);
1316 return 0;
1317 }
b535b7b2
AL		 1318
1319 return len;
1320}
b535b7b2 1321
4f1c942b 1322static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1323{
e3f5ec2b 1324 TAPState *s = vc->opaque;
4f1c942b
MM		 1325 ssize_t len;
1326
1327 do {
1328 len = write(s->fd, buf, size);
1329 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1330
1331 return len;
63a01ef8
AL		 1332}
1333
3471b757
MM		 1334static int tap_can_send(void *opaque)
1335{
1336 TAPState *s = opaque;
1337
1338 return qemu_can_send_packet(s->vc);
1339}
1340
63a01ef8 1341#ifdef __sun__
5a6d8815
MM		 1342static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1343{
63a01ef8
AL		 1344 struct strbuf sbuf;
1345 int f = 0;
5a6d8815
MM		 1346
1347 sbuf.maxlen = maxlen;
3f4cb3d3 1348 sbuf.buf = (char *)buf;
5a6d8815
MM		 1349
1350 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1351}
63a01ef8 1352#else
5a6d8815
MM		 1353static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1354{
1355 return read(tapfd, buf, maxlen);
1356}
63a01ef8 1357#endif
5a6d8815 1358
783527a9 1359static void tap_send_completed(VLANClientState *vc, ssize_t len)
e19eb224
MM		 1360{
1361 TAPState *s = vc->opaque;
b664e367 1362 tap_read_poll(s, 1);
e19eb224
MM		 1363}
1364
5a6d8815
MM		 1365static void tap_send(void *opaque)
1366{
1367 TAPState *s = opaque;
5a6d8815
MM		 1368 int size;
1369
e19eb224
MM		 1370 do {
1371 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1372 if (size <= 0) {
1373 break;
1374 }
1375
1376 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1377 if (size == 0) {
b664e367 1378 tap_read_poll(s, 0);
e19eb224
MM		 1379 }
1380 } while (size > 0);
63a01ef8
AL		 1381}
1382
0df0ff6d 1383#ifdef TUNSETSNDBUF
fc5b81d1
MM		 1384/* sndbuf should be set to a value lower than the tx queue
1385 * capacity of any destination network interface.
1386 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1387 * a good default, given a 1500 byte MTU.
1388 */
1389#define TAP_DEFAULT_SNDBUF 1024*1024
1390
8a1c5235 1391static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
fc5b81d1 1392{
8a1c5235 1393 int sndbuf;
fc5b81d1 1394
8a1c5235 1395 sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF);
fc5b81d1
MM		 1396 if (!sndbuf) {
1397 sndbuf = INT_MAX;
1398 }
1399
8a1c5235 1400 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) {
fb12577c 1401 qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno));
0752706d 1402 return -1;
0df0ff6d 1403 }
0752706d 1404 return 0;
fc5b81d1 1405}
0df0ff6d 1406#else
8a1c5235 1407static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
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;
283c7c63
MM		 1439 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
1440 tap_receive, tap_receive_iov,
1441 tap_cleanup, s);
b664e367 1442 tap_read_poll(s, 1);
7cb7434b 1443 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
63a01ef8
AL		 1444 return s;
1445}
1446
71e72a19 1447#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
63a01ef8
AL		 1448static int tap_open(char *ifname, int ifname_size)
1449{
1450 int fd;
1451 char *dev;
1452 struct stat s;
1453
1454 TFR(fd = open("/dev/tap", O_RDWR));
1455 if (fd < 0) {
1456 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1457 return -1;
1458 }
1459
1460 fstat(fd, &s);
1461 dev = devname(s.st_rdev, S_IFCHR);
1462 pstrcpy(ifname, ifname_size, dev);
1463
1464 fcntl(fd, F_SETFL, O_NONBLOCK);
1465 return fd;
1466}
1467#elif defined(__sun__)
1468#define TUNNEWPPA (('T'<<16) | 0x0001)
1469/*
1470 * Allocate TAP device, returns opened fd.
1471 * Stores dev name in the first arg(must be large enough).
1472 */
3f4cb3d3 1473static int tap_alloc(char *dev, size_t dev_size)
63a01ef8
AL		 1474{
1475 int tap_fd, if_fd, ppa = -1;
1476 static int ip_fd = 0;
1477 char *ptr;
1478
1479 static int arp_fd = 0;
1480 int ip_muxid, arp_muxid;
1481 struct strioctl strioc_if, strioc_ppa;
1482 int link_type = I_PLINK;;
1483 struct lifreq ifr;
1484 char actual_name[32] = "";
1485
1486 memset(&ifr, 0x0, sizeof(ifr));
1487
1488 if( *dev ){
1489 ptr = dev;
47398b9c 1490 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
63a01ef8
AL		 1491 ppa = atoi(ptr);
1492 }
1493
1494 /* Check if IP device was opened */
1495 if( ip_fd )
1496 close(ip_fd);
1497
1498 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1499 if (ip_fd < 0) {
1500 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1501 return -1;
1502 }
1503
1504 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1505 if (tap_fd < 0) {
1506 syslog(LOG_ERR, "Can't open /dev/tap");
1507 return -1;
1508 }
1509
1510 /* Assign a new PPA and get its unit number. */
1511 strioc_ppa.ic_cmd = TUNNEWPPA;
1512 strioc_ppa.ic_timout = 0;
1513 strioc_ppa.ic_len = sizeof(ppa);
1514 strioc_ppa.ic_dp = (char *)&ppa;
1515 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1516 syslog (LOG_ERR, "Can't assign new interface");
1517
1518 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1519 if (if_fd < 0) {
1520 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1521 return -1;
1522 }
1523 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1524 syslog(LOG_ERR, "Can't push IP module");
1525 return -1;
1526 }
1527
1528 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1529 syslog(LOG_ERR, "Can't get flags\n");
1530
1531 snprintf (actual_name, 32, "tap%d", ppa);
1532 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1533
1534 ifr.lifr_ppa = ppa;
1535 /* Assign ppa according to the unit number returned by tun device */
1536
1537 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1538 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1539 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1540 syslog (LOG_ERR, "Can't get flags\n");
1541 /* Push arp module to if_fd */
1542 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1543 syslog (LOG_ERR, "Can't push ARP module (2)");
1544
1545 /* Push arp module to ip_fd */
1546 if (ioctl (ip_fd, I_POP, NULL) < 0)
1547 syslog (LOG_ERR, "I_POP failed\n");
1548 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1549 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1550 /* Open arp_fd */
1551 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1552 if (arp_fd < 0)
1553 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1554
1555 /* Set ifname to arp */
1556 strioc_if.ic_cmd = SIOCSLIFNAME;
1557 strioc_if.ic_timout = 0;
1558 strioc_if.ic_len = sizeof(ifr);
1559 strioc_if.ic_dp = (char *)&ifr;
1560 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1561 syslog (LOG_ERR, "Can't set ifname to arp\n");
1562 }
1563
1564 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1565 syslog(LOG_ERR, "Can't link TAP device to IP");
1566 return -1;
1567 }
1568
1569 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1570 syslog (LOG_ERR, "Can't link TAP device to ARP");
1571
1572 close (if_fd);
1573
1574 memset(&ifr, 0x0, sizeof(ifr));
1575 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1576 ifr.lifr_ip_muxid = ip_muxid;
1577 ifr.lifr_arp_muxid = arp_muxid;
1578
1579 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1580 {
1581 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1582 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1583 syslog (LOG_ERR, "Can't set multiplexor id");
1584 }
1585
1586 snprintf(dev, dev_size, "tap%d", ppa);
1587 return tap_fd;
1588}
1589
1590static int tap_open(char *ifname, int ifname_size)
1591{
1592 char dev[10]="";
1593 int fd;
1594 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1595 fprintf(stderr, "Cannot allocate TAP device\n");
1596 return -1;
1597 }
1598 pstrcpy(ifname, ifname_size, dev);
1599 fcntl(fd, F_SETFL, O_NONBLOCK);
1600 return fd;
1601}
b29fe3ed 1602#elif defined (_AIX)
1603static int tap_open(char *ifname, int ifname_size)
1604{
1605 fprintf (stderr, "no tap on AIX\n");
1606 return -1;
1607}
63a01ef8
AL		 1608#else
1609static int tap_open(char *ifname, int ifname_size)
1610{
1611 struct ifreq ifr;
1612 int fd, ret;
1613
1614 TFR(fd = open("/dev/net/tun", O_RDWR));
1615 if (fd < 0) {
1616 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1617 return -1;
1618 }
1619 memset(&ifr, 0, sizeof(ifr));
1620 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1621 if (ifname[0] != '\0')
1622 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1623 else
1624 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1625 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1626 if (ret != 0) {
1627 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1628 close(fd);
1629 return -1;
1630 }
1631 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1632 fcntl(fd, F_SETFL, O_NONBLOCK);
1633 return fd;
1634}
1635#endif
1636
1637static int launch_script(const char *setup_script, const char *ifname, int fd)
1638{
7c3370d4 1639 sigset_t oldmask, mask;
63a01ef8
AL		 1640 int pid, status;
1641 char *args[3];
1642 char **parg;
1643
7c3370d4
JK		 1644 sigemptyset(&mask);
1645 sigaddset(&mask, SIGCHLD);
1646 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1647
1648 /* try to launch network script */
1649 pid = fork();
1650 if (pid == 0) {
1651 int open_max = sysconf(_SC_OPEN_MAX), i;
1652
1653 for (i = 0; i < open_max; i++) {
1654 if (i != STDIN_FILENO &&
1655 i != STDOUT_FILENO &&
1656 i != STDERR_FILENO &&
1657 i != fd) {
1658 close(i);
63a01ef8
AL		 1659 }
1660 }
7c3370d4
JK		 1661 parg = args;
1662 *parg++ = (char *)setup_script;
1663 *parg++ = (char *)ifname;
1664 *parg++ = NULL;
1665 execv(setup_script, args);
1666 _exit(1);
1667 } else if (pid > 0) {
1668 while (waitpid(pid, &status, 0) != pid) {
1669 /* loop */
1670 }
1671 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1672
1673 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1674 return 0;
1675 }
1676 }
1677 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1678 return -1;
63a01ef8
AL		 1679}
1680
4a77b25e
MM		 1681static TAPState *net_tap_init(VLANState *vlan, const char *model,
1682 const char *name, const char *ifname1,
1683 const char *setup_script, const char *down_script)
63a01ef8
AL		 1684{
1685 TAPState *s;
1686 int fd;
1687 char ifname[128];
1688
1689 if (ifname1 != NULL)
1690 pstrcpy(ifname, sizeof(ifname), ifname1);
1691 else
1692 ifname[0] = '\0';
1693 TFR(fd = tap_open(ifname, sizeof(ifname)));
1694 if (fd < 0)
4a77b25e 1695 return NULL;
63a01ef8
AL		 1696
1697 if (!setup_script || !strcmp(setup_script, "no"))
1698 setup_script = "";
4a77b25e
MM		 1699 if (setup_script[0] != '\0' &&
1700 launch_script(setup_script, ifname, fd)) {
1701 return NULL;
63a01ef8 1702 }
7a9f6e4a 1703 s = net_tap_fd_init(vlan, model, name, fd);
63a01ef8 1704 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
7cb7434b
AL		 1705 "ifname=%s,script=%s,downscript=%s",
1706 ifname, setup_script, down_script);
973cbd37 1707 if (down_script && strcmp(down_script, "no")) {
63a01ef8 1708 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
973cbd37
AL		 1709 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1710 }
4a77b25e 1711 return s;
63a01ef8
AL		 1712}
1713
1714#endif /* !_WIN32 */
1715
1716#if defined(CONFIG_VDE)
1717typedef struct VDEState {
1718 VLANClientState *vc;
1719 VDECONN *vde;
1720} VDEState;
1721
1722static void vde_to_qemu(void *opaque)
1723{
1724 VDEState *s = opaque;
1725 uint8_t buf[4096];
1726 int size;
1727
cc63bb0f 1728 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
63a01ef8
AL		 1729 if (size > 0) {
1730 qemu_send_packet(s->vc, buf, size);
1731 }
1732}
1733
4f1c942b 1734static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1735{
e3f5ec2b 1736 VDEState *s = vc->opaque;
068daedd 1737 ssize_t ret;
4f1c942b
MM		 1738
1739 do {
1740 ret = vde_send(s->vde, (const char *)buf, size, 0);
1741 } while (ret < 0 && errno == EINTR);
1742
1743 return ret;
63a01ef8
AL		 1744}
1745
b946a153
AL		 1746static void vde_cleanup(VLANClientState *vc)
1747{
1748 VDEState *s = vc->opaque;
1749 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1750 vde_close(s->vde);
1751 qemu_free(s);
1752}
1753
7a9f6e4a
AL		 1754static int net_vde_init(VLANState *vlan, const char *model,
1755 const char *name, const char *sock,
bf38c1a0 1756 int port, const char *group, int mode)
63a01ef8
AL		 1757{
1758 VDEState *s;
dd51058d
MM		 1759 char *init_group = (char *)group;
1760 char *init_sock = (char *)sock;
63a01ef8
AL		 1761
1762 struct vde_open_args args = {
1763 .port = port,
1764 .group = init_group,
1765 .mode = mode,
1766 };
1767
1768 s = qemu_mallocz(sizeof(VDEState));
cc63bb0f 1769 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
63a01ef8
AL		 1770 if (!s->vde){
1771 free(s);
1772 return -1;
1773 }
283c7c63
MM		 1774 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
1775 vde_receive, NULL,
1776 vde_cleanup, s);
63a01ef8 1777 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
7cb7434b 1778 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
63a01ef8
AL		 1779 sock, vde_datafd(s->vde));
1780 return 0;
1781}
1782#endif
1783
1784/* network connection */
1785typedef struct NetSocketState {
1786 VLANClientState *vc;
1787 int fd;
1788 int state; /* 0 = getting length, 1 = getting data */
abcd2baa
AL		 1789 unsigned int index;
1790 unsigned int packet_len;
63a01ef8
AL		 1791 uint8_t buf[4096];
1792 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1793} NetSocketState;
1794
1795typedef struct NetSocketListenState {
1796 VLANState *vlan;
bf38c1a0 1797 char *model;
7a9f6e4a 1798 char *name;
63a01ef8
AL		 1799 int fd;
1800} NetSocketListenState;
1801
1802/* XXX: we consider we can send the whole packet without blocking */
4f1c942b 1803static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1804{
e3f5ec2b 1805 NetSocketState *s = vc->opaque;
63a01ef8
AL		 1806 uint32_t len;
1807 len = htonl(size);
1808
1809 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
4f1c942b 1810 return send_all(s->fd, buf, size);
63a01ef8
AL		 1811}
1812
4f1c942b 1813static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1814{
e3f5ec2b 1815 NetSocketState *s = vc->opaque;
4f1c942b 1816
70503264 1817 return sendto(s->fd, (const void *)buf, size, 0,
4f1c942b 1818 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
63a01ef8
AL		 1819}
1820
1821static void net_socket_send(void *opaque)
1822{
1823 NetSocketState *s = opaque;
abcd2baa
AL		 1824 int size, err;
1825 unsigned l;
63a01ef8
AL		 1826 uint8_t buf1[4096];
1827 const uint8_t *buf;
1828
c5b76b38 1829 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
63a01ef8
AL		 1830 if (size < 0) {
1831 err = socket_error();
1832 if (err != EWOULDBLOCK)
1833 goto eoc;
1834 } else if (size == 0) {
1835 /* end of connection */
1836 eoc:
1837 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1838 closesocket(s->fd);
1839 return;
1840 }
1841 buf = buf1;
1842 while (size > 0) {
1843 /* reassemble a packet from the network */
1844 switch(s->state) {
1845 case 0:
1846 l = 4 - s->index;
1847 if (l > size)
1848 l = size;
1849 memcpy(s->buf + s->index, buf, l);
1850 buf += l;
1851 size -= l;
1852 s->index += l;
1853 if (s->index == 4) {
1854 /* got length */
1855 s->packet_len = ntohl(*(uint32_t *)s->buf);
1856 s->index = 0;
1857 s->state = 1;
1858 }
1859 break;
1860 case 1:
1861 l = s->packet_len - s->index;
1862 if (l > size)
1863 l = size;
abcd2baa
AL		 1864 if (s->index + l <= sizeof(s->buf)) {
1865 memcpy(s->buf + s->index, buf, l);
1866 } else {
1867 fprintf(stderr, "serious error: oversized packet received,"
1868 "connection terminated.\n");
1869 s->state = 0;
1870 goto eoc;
1871 }
1872
63a01ef8
AL		 1873 s->index += l;
1874 buf += l;
1875 size -= l;
1876 if (s->index >= s->packet_len) {
1877 qemu_send_packet(s->vc, s->buf, s->packet_len);
1878 s->index = 0;
1879 s->state = 0;
1880 }
1881 break;
1882 }
1883 }
1884}
1885
1886static void net_socket_send_dgram(void *opaque)
1887{
1888 NetSocketState *s = opaque;
1889 int size;
1890
c5b76b38 1891 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
63a01ef8
AL		 1892 if (size < 0)
1893 return;
1894 if (size == 0) {
1895 /* end of connection */
1896 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1897 return;
1898 }
1899 qemu_send_packet(s->vc, s->buf, size);
1900}
1901
1902static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1903{
1904 struct ip_mreq imr;
1905 int fd;
1906 int val, ret;
1907 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1908 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1909 inet_ntoa(mcastaddr->sin_addr),
1910 (int)ntohl(mcastaddr->sin_addr.s_addr));
1911 return -1;
1912
1913 }
1914 fd = socket(PF_INET, SOCK_DGRAM, 0);
1915 if (fd < 0) {
1916 perror("socket(PF_INET, SOCK_DGRAM)");
1917 return -1;
1918 }
1919
1920 val = 1;
1921 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1922 (const char *)&val, sizeof(val));
1923 if (ret < 0) {
1924 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1925 goto fail;
1926 }
1927
1928 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1929 if (ret < 0) {
1930 perror("bind");
1931 goto fail;
1932 }
1933
1934 /* Add host to multicast group */
1935 imr.imr_multiaddr = mcastaddr->sin_addr;
1936 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1937
1938 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1939 (const char *)&imr, sizeof(struct ip_mreq));
1940 if (ret < 0) {
1941 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1942 goto fail;
1943 }
1944
1945 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1946 val = 1;
1947 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1948 (const char *)&val, sizeof(val));
1949 if (ret < 0) {
1950 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1951 goto fail;
1952 }
1953
1954 socket_set_nonblock(fd);
1955 return fd;
1956fail:
1957 if (fd >= 0)
1958 closesocket(fd);
1959 return -1;
1960}
1961
b946a153
AL		 1962static void net_socket_cleanup(VLANClientState *vc)
1963{
1964 NetSocketState *s = vc->opaque;
1965 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1966 close(s->fd);
1967 qemu_free(s);
1968}
1969
7a9f6e4a
AL		 1970static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1971 const char *model,
1972 const char *name,
bf38c1a0 1973 int fd, int is_connected)
63a01ef8
AL		 1974{
1975 struct sockaddr_in saddr;
1976 int newfd;
1977 socklen_t saddr_len;
1978 NetSocketState *s;
1979
1980 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1981 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1982 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1983 */
1984
1985 if (is_connected) {
1986 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1987 /* must be bound */
1988 if (saddr.sin_addr.s_addr==0) {
1989 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1990 fd);
1991 return NULL;
1992 }
1993 /* clone dgram socket */
1994 newfd = net_socket_mcast_create(&saddr);
1995 if (newfd < 0) {
1996 /* error already reported by net_socket_mcast_create() */
1997 close(fd);
1998 return NULL;
1999 }
2000 /* clone newfd to fd, close newfd */
2001 dup2(newfd, fd);
2002 close(newfd);
2003
2004 } else {
2005 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2006 fd, strerror(errno));
2007 return NULL;
2008 }
2009 }
2010
2011 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8
AL		 2012 s->fd = fd;
2013
283c7c63
MM		 2014 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
2015 net_socket_receive_dgram, NULL,
2016 net_socket_cleanup, s);
63a01ef8
AL		 2017 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2018
2019 /* mcast: save bound address as dst */
2020 if (is_connected) s->dgram_dst=saddr;
2021
2022 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2023 "socket: fd=%d (%s mcast=%s:%d)",
2024 fd, is_connected? "cloned" : "",
2025 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2026 return s;
2027}
2028
2029static void net_socket_connect(void *opaque)
2030{
2031 NetSocketState *s = opaque;
2032 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2033}
2034
7a9f6e4a
AL		 2035static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2036 const char *model,
2037 const char *name,
bf38c1a0 2038 int fd, int is_connected)
63a01ef8
AL		 2039{
2040 NetSocketState *s;
2041 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8 2042 s->fd = fd;
283c7c63
MM		 2043 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
2044 net_socket_receive, NULL,
2045 net_socket_cleanup, s);
63a01ef8
AL		 2046 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2047 "socket: fd=%d", fd);
2048 if (is_connected) {
2049 net_socket_connect(s);
2050 } else {
2051 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2052 }
2053 return s;
2054}
2055
7a9f6e4a
AL		 2056static NetSocketState *net_socket_fd_init(VLANState *vlan,
2057 const char *model, const char *name,
bf38c1a0 2058 int fd, int is_connected)
63a01ef8 2059{
acedcfbf 2060 int so_type = -1, optlen=sizeof(so_type);
63a01ef8
AL		 2061
2062 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2063 (socklen_t *)&optlen)< 0) {
2064 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2065 return NULL;
2066 }
2067 switch(so_type) {
2068 case SOCK_DGRAM:
7a9f6e4a 2069 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
63a01ef8 2070 case SOCK_STREAM:
7a9f6e4a 2071 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2072 default:
2073 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2074 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
7a9f6e4a 2075 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2076 }
2077 return NULL;
2078}
2079
2080static void net_socket_accept(void *opaque)
2081{
2082 NetSocketListenState *s = opaque;
2083 NetSocketState *s1;
2084 struct sockaddr_in saddr;
2085 socklen_t len;
2086 int fd;
2087
2088 for(;;) {
2089 len = sizeof(saddr);
2090 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2091 if (fd < 0 && errno != EINTR) {
2092 return;
2093 } else if (fd >= 0) {
2094 break;
2095 }
2096 }
7a9f6e4a 2097 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
63a01ef8
AL		 2098 if (!s1) {
2099 closesocket(fd);
2100 } else {
2101 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2102 "socket: connection from %s:%d",
2103 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2104 }
2105}
2106
7a9f6e4a
AL		 2107static int net_socket_listen_init(VLANState *vlan,
2108 const char *model,
2109 const char *name,
bf38c1a0 2110 const char *host_str)
63a01ef8
AL		 2111{
2112 NetSocketListenState *s;
2113 int fd, val, ret;
2114 struct sockaddr_in saddr;
2115
2116 if (parse_host_port(&saddr, host_str) < 0)
2117 return -1;
2118
2119 s = qemu_mallocz(sizeof(NetSocketListenState));
63a01ef8
AL		 2120
2121 fd = socket(PF_INET, SOCK_STREAM, 0);
2122 if (fd < 0) {
2123 perror("socket");
2124 return -1;
2125 }
2126 socket_set_nonblock(fd);
2127
2128 /* allow fast reuse */
2129 val = 1;
2130 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2131
2132 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2133 if (ret < 0) {
2134 perror("bind");
2135 return -1;
2136 }
2137 ret = listen(fd, 0);
2138 if (ret < 0) {
2139 perror("listen");
2140 return -1;
2141 }
2142 s->vlan = vlan;
02374aa0
MM		 2143 s->model = qemu_strdup(model);
2144 s->name = name ? qemu_strdup(name) : NULL;
63a01ef8
AL		 2145 s->fd = fd;
2146 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2147 return 0;
2148}
2149
7a9f6e4a
AL		 2150static int net_socket_connect_init(VLANState *vlan,
2151 const char *model,
2152 const char *name,
bf38c1a0 2153 const char *host_str)
63a01ef8
AL		 2154{
2155 NetSocketState *s;
2156 int fd, connected, ret, err;
2157 struct sockaddr_in saddr;
2158
2159 if (parse_host_port(&saddr, host_str) < 0)
2160 return -1;
2161
2162 fd = socket(PF_INET, SOCK_STREAM, 0);
2163 if (fd < 0) {
2164 perror("socket");
2165 return -1;
2166 }
2167 socket_set_nonblock(fd);
2168
2169 connected = 0;
2170 for(;;) {
2171 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2172 if (ret < 0) {
2173 err = socket_error();
2174 if (err == EINTR || err == EWOULDBLOCK) {
2175 } else if (err == EINPROGRESS) {
2176 break;
2177#ifdef _WIN32
2178 } else if (err == WSAEALREADY) {
2179 break;
2180#endif
2181 } else {
2182 perror("connect");
2183 closesocket(fd);
2184 return -1;
2185 }
2186 } else {
2187 connected = 1;
2188 break;
2189 }
2190 }
7a9f6e4a 2191 s = net_socket_fd_init(vlan, model, name, fd, connected);
63a01ef8
AL		 2192 if (!s)
2193 return -1;
2194 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2195 "socket: connect to %s:%d",
2196 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2197 return 0;
2198}
2199
7a9f6e4a
AL		 2200static int net_socket_mcast_init(VLANState *vlan,
2201 const char *model,
2202 const char *name,
bf38c1a0 2203 const char *host_str)
63a01ef8
AL		 2204{
2205 NetSocketState *s;
2206 int fd;
2207 struct sockaddr_in saddr;
2208
2209 if (parse_host_port(&saddr, host_str) < 0)
2210 return -1;
2211
2212
2213 fd = net_socket_mcast_create(&saddr);
2214 if (fd < 0)
2215 return -1;
2216
7a9f6e4a 2217 s = net_socket_fd_init(vlan, model, name, fd, 0);
63a01ef8
AL		 2218 if (!s)
2219 return -1;
2220
2221 s->dgram_dst = saddr;
2222
2223 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2224 "socket: mcast=%s:%d",
2225 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2226 return 0;
2227
2228}
2229
bb9ea79e
AL		 2230typedef struct DumpState {
2231 VLANClientState *pcap_vc;
2232 int fd;
2233 int pcap_caplen;
2234} DumpState;
2235
2236#define PCAP_MAGIC 0xa1b2c3d4
2237
2238struct pcap_file_hdr {
2239 uint32_t magic;
2240 uint16_t version_major;
2241 uint16_t version_minor;
2242 int32_t thiszone;
2243 uint32_t sigfigs;
2244 uint32_t snaplen;
2245 uint32_t linktype;
2246};
2247
2248struct pcap_sf_pkthdr {
2249 struct {
2250 int32_t tv_sec;
2251 int32_t tv_usec;
2252 } ts;
2253 uint32_t caplen;
2254 uint32_t len;
2255};
2256
4f1c942b 2257static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
bb9ea79e 2258{
e3f5ec2b 2259 DumpState *s = vc->opaque;
bb9ea79e
AL		 2260 struct pcap_sf_pkthdr hdr;
2261 int64_t ts;
2262 int caplen;
2263
2264 /* Early return in case of previous error. */
2265 if (s->fd < 0) {
4f1c942b 2266 return size;
bb9ea79e
AL		 2267 }
2268
6ee093c9 2269 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
bb9ea79e
AL		 2270 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2271
37cb6fc3 2272 hdr.ts.tv_sec = ts / 1000000;
bb9ea79e
AL		 2273 hdr.ts.tv_usec = ts % 1000000;
2274 hdr.caplen = caplen;
2275 hdr.len = size;
2276 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2277 write(s->fd, buf, caplen) != caplen) {
2278 qemu_log("-net dump write error - stop dump\n");
2279 close(s->fd);
2280 s->fd = -1;
2281 }
4f1c942b
MM		 2282
2283 return size;
bb9ea79e
AL		 2284}
2285
2286static void net_dump_cleanup(VLANClientState *vc)
2287{
2288 DumpState *s = vc->opaque;
2289
2290 close(s->fd);
2291 qemu_free(s);
2292}
2293
fb12577c 2294static int net_dump_init(VLANState *vlan, const char *device,
bb9ea79e
AL		 2295 const char *name, const char *filename, int len)
2296{
2297 struct pcap_file_hdr hdr;
2298 DumpState *s;
2299
2300 s = qemu_malloc(sizeof(DumpState));
2301
024431b3 2302 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
bb9ea79e 2303 if (s->fd < 0) {
fb12577c 2304 qemu_error("-net dump: can't open %s\n", filename);
bb9ea79e
AL		 2305 return -1;
2306 }
2307
2308 s->pcap_caplen = len;
2309
2310 hdr.magic = PCAP_MAGIC;
2311 hdr.version_major = 2;
2312 hdr.version_minor = 4;
2313 hdr.thiszone = 0;
2314 hdr.sigfigs = 0;
2315 hdr.snaplen = s->pcap_caplen;
2316 hdr.linktype = 1;
2317
2318 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
fb12577c 2319 qemu_error("-net dump write error: %s\n", strerror(errno));
bb9ea79e
AL		 2320 close(s->fd);
2321 qemu_free(s);
2322 return -1;
2323 }
2324
283c7c63
MM		 2325 s->pcap_vc = qemu_new_vlan_client(vlan, NULL, device, name, NULL,
2326 dump_receive, NULL,
bb9ea79e
AL		 2327 net_dump_cleanup, s);
2328 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2329 "dump to %s (len=%d)", filename, len);
2330 return 0;
2331}
2332
63a01ef8 2333/* find or alloc a new VLAN */
1a609520 2334VLANState *qemu_find_vlan(int id, int allocate)
63a01ef8 2335{
5610c3aa
MM		 2336 VLANState *vlan;
2337
2338 QTAILQ_FOREACH(vlan, &vlans, next) {
2339 if (vlan->id == id) {
63a01ef8 2340 return vlan;
5610c3aa 2341 }
63a01ef8 2342 }
5610c3aa 2343
1a609520
JK		 2344 if (!allocate) {
2345 return NULL;
2346 }
5610c3aa 2347
63a01ef8 2348 vlan = qemu_mallocz(sizeof(VLANState));
63a01ef8 2349 vlan->id = id;
5610c3aa 2350 QTAILQ_INIT(&vlan->clients);
72cf2d4f 2351 QTAILQ_INIT(&vlan->send_queue);
5610c3aa
MM		 2352
2353 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
2354
63a01ef8
AL		 2355 return vlan;
2356}
2357
5869c4d5
MM		 2358static VLANClientState *qemu_find_netdev(const char *id)
2359{
2360 VLANClientState *vc;
2361
2362 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
2363 if (!strcmp(vc->name, id)) {
2364 return vc;
2365 }
2366 }
2367
2368 return NULL;
2369}
2370
7697079b
AL		 2371static int nic_get_free_idx(void)
2372{
2373 int index;
2374
2375 for (index = 0; index < MAX_NICS; index++)
2376 if (!nd_table[index].used)
2377 return index;
2378 return -1;
2379}
2380
07caea31
MA		 2381int qemu_show_nic_models(const char *arg, const char *const *models)
2382{
2383 int i;
2384
2385 if (!arg || strcmp(arg, "?"))
2386 return 0;
2387
2388 fprintf(stderr, "qemu: Supported NIC models: ");
2389 for (i = 0 ; models[i]; i++)
2390 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2391 return 1;
2392}
2393
d07f22c5
AL		 2394void qemu_check_nic_model(NICInfo *nd, const char *model)
2395{
2396 const char *models[2];
2397
2398 models[0] = model;
2399 models[1] = NULL;
2400
07caea31
MA		 2401 if (qemu_show_nic_models(nd->model, models))
2402 exit(0);
2403 if (qemu_find_nic_model(nd, models, model) < 0)
2404 exit(1);
d07f22c5
AL		 2405}
2406
07caea31
MA		 2407int qemu_find_nic_model(NICInfo *nd, const char * const *models,
2408 const char *default_model)
d07f22c5 2409{
07caea31 2410 int i;
d07f22c5
AL		 2411
2412 if (!nd->model)
32a8e14a 2413 nd->model = qemu_strdup(default_model);
d07f22c5 2414
07caea31
MA		 2415 for (i = 0 ; models[i]; i++) {
2416 if (strcmp(nd->model, models[i]) == 0)
2417 return i;
d07f22c5
AL		 2418 }
2419
07caea31
MA		 2420 qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
2421 return -1;
d07f22c5
AL		 2422}
2423
c1d6eed7
MM		 2424static int net_handle_fd_param(Monitor *mon, const char *param)
2425{
2426 if (!qemu_isdigit(param[0])) {
2427 int fd;
2428
2429 fd = monitor_get_fd(mon, param);
2430 if (fd == -1) {
fb12577c 2431 qemu_error("No file descriptor named %s found", param);
c1d6eed7
MM		 2432 return -1;
2433 }
2434
2435 return fd;
2436 } else {
2437 return strtol(param, NULL, 0);
2438 }
2439}
2440
f6b134ac
MM		 2441static int net_init_nic(QemuOpts *opts,
2442 Monitor *mon,
2443 const char *name,
2444 VLANState *vlan)
f83c6e10
MM		 2445{
2446 int idx;
2447 NICInfo *nd;
5869c4d5 2448 const char *netdev;
f83c6e10
MM		 2449
2450 idx = nic_get_free_idx();
2451 if (idx == -1 || nb_nics >= MAX_NICS) {
2452 qemu_error("Too Many NICs\n");
2453 return -1;
2454 }
2455
2456 nd = &nd_table[idx];
2457
2458 memset(nd, 0, sizeof(*nd));
2459
5869c4d5
MM		 2460 if ((netdev = qemu_opt_get(opts, "netdev"))) {
2461 nd->netdev = qemu_find_netdev(netdev);
2462 if (!nd->netdev) {
2463 qemu_error("netdev '%s' not found\n", netdev);
2464 return -1;
2465 }
2466 } else {
2467 assert(vlan);
2468 nd->vlan = vlan;
2469 }
6d952ebe
MM		 2470 if (name) {
2471 nd->name = qemu_strdup(name);
2472 }
f83c6e10
MM		 2473 if (qemu_opt_get(opts, "model")) {
2474 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
2475 }
2476 if (qemu_opt_get(opts, "addr")) {
2477 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
2478 }
2479
2480 nd->macaddr[0] = 0x52;
2481 nd->macaddr[1] = 0x54;
2482 nd->macaddr[2] = 0x00;
2483 nd->macaddr[3] = 0x12;
2484 nd->macaddr[4] = 0x34;
2485 nd->macaddr[5] = 0x56 + idx;
2486
2487 if (qemu_opt_get(opts, "macaddr") &&
2488 parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
2489 qemu_error("invalid syntax for ethernet address\n");
2490 return -1;
2491 }
2492
2493 nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
2494 if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
2495 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
2496 qemu_error("invalid # of vectors: %d\n", nd->nvectors);
2497 return -1;
2498 }
2499
2500 nd->used = 1;
5869c4d5
MM		 2501 if (vlan) {
2502 nd->vlan->nb_guest_devs++;
2503 }
f83c6e10
MM		 2504 nb_nics++;
2505
2506 return idx;
2507}
2508
a3a766e7 2509#if defined(CONFIG_SLIRP)
ec302ffd
MM		 2510static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
2511{
2512 struct slirp_config_str *config;
2513
2514 if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
2515 return 0;
2516 }
2517
2518 config = qemu_mallocz(sizeof(*config));
2519
2520 pstrcpy(config->str, sizeof(config->str), value);
2521
2522 if (!strcmp(name, "hostfwd")) {
2523 config->flags = SLIRP_CFG_HOSTFWD;
2524 }
2525
2526 config->next = slirp_configs;
2527 slirp_configs = config;
2528
2529 return 0;
2530}
2531
f6b134ac
MM		 2532static int net_init_slirp(QemuOpts *opts,
2533 Monitor *mon,
2534 const char *name,
2535 VLANState *vlan)
ec302ffd 2536{
ec302ffd 2537 struct slirp_config_str *config;
ec302ffd
MM		 2538 const char *vhost;
2539 const char *vhostname;
2540 const char *vdhcp_start;
2541 const char *vnamesrv;
2542 const char *tftp_export;
2543 const char *bootfile;
2544 const char *smb_export;
2545 const char *vsmbsrv;
2546 char *vnet = NULL;
2547 int restricted = 0;
2548 int ret;
2549
ec302ffd
MM		 2550 vhost = qemu_opt_get(opts, "host");
2551 vhostname = qemu_opt_get(opts, "hostname");
2552 vdhcp_start = qemu_opt_get(opts, "dhcpstart");
2553 vnamesrv = qemu_opt_get(opts, "dns");
2554 tftp_export = qemu_opt_get(opts, "tftp");
2555 bootfile = qemu_opt_get(opts, "bootfile");
2556 smb_export = qemu_opt_get(opts, "smb");
2557 vsmbsrv = qemu_opt_get(opts, "smbserver");
2558
2559 if (qemu_opt_get(opts, "ip")) {
2560 const char *ip = qemu_opt_get(opts, "ip");
2561 int l = strlen(ip) + strlen("/24") + 1;
2562
2563 vnet = qemu_malloc(l);
2564
2565 /* emulate legacy ip= parameter */
2566 pstrcpy(vnet, l, ip);
2567 pstrcat(vnet, l, "/24");
2568 }
2569
2570 if (qemu_opt_get(opts, "net")) {
2571 if (vnet) {
2572 qemu_free(vnet);
2573 }
2574 vnet = qemu_strdup(qemu_opt_get(opts, "net"));
2575 }
2576
2577 if (qemu_opt_get(opts, "restrict") &&
2578 qemu_opt_get(opts, "restrict")[0] == 'y') {
2579 restricted = 1;
2580 }
2581
2582 qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
2583
2584 ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
2585 vhostname, tftp_export, bootfile, vdhcp_start,
2586 vnamesrv, smb_export, vsmbsrv);
2587
2588 while (slirp_configs) {
2589 config = slirp_configs;
2590 slirp_configs = config->next;
2591 qemu_free(config);
2592 }
2593
f6b134ac 2594 if (ret != -1 && vlan) {
ec302ffd
MM		 2595 vlan->nb_host_devs++;
2596 }
2597
2598 qemu_free(vnet);
2599
2600 return ret;
2601}
a3a766e7 2602#endif /* CONFIG_SLIRP */
ec302ffd 2603
8a1c5235 2604#ifdef _WIN32
f6b134ac
MM		 2605static int net_init_tap_win32(QemuOpts *opts,
2606 Monitor *mon,
2607 const char *name,
2608 VLANState *vlan)
8a1c5235 2609{
8a1c5235
MM		 2610 const char *ifname;
2611
8a1c5235
MM		 2612 ifname = qemu_opt_get(opts, "ifname");
2613
2614 if (!ifname) {
2615 qemu_error("tap: no interface name\n");
2616 return -1;
2617 }
2618
2619 if (tap_win32_init(vlan, "tap", name, ifname) == -1) {
2620 return -1;
2621 }
2622
f6b134ac
MM		 2623 if (vlan) {
2624 vlan->nb_host_devs++;
2625 }
8a1c5235
MM		 2626
2627 return 0;
2628}
2629#elif !defined(_AIX)
f6b134ac
MM		 2630static int net_init_tap(QemuOpts *opts,
2631 Monitor *mon,
2632 const char *name,
2633 VLANState *vlan)
8a1c5235 2634{
8a1c5235
MM		 2635 TAPState *s;
2636
8a1c5235
MM		 2637 if (qemu_opt_get(opts, "fd")) {
2638 int fd;
2639
2640 if (qemu_opt_get(opts, "ifname") ||
2641 qemu_opt_get(opts, "script") ||
2642 qemu_opt_get(opts, "downscript")) {
2643 qemu_error("ifname=, script= and downscript= is invalid with fd=\n");
2644 return -1;
2645 }
2646
2647 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2648 if (fd == -1) {
2649 return -1;
2650 }
2651
2652 fcntl(fd, F_SETFL, O_NONBLOCK);
2653
2654 s = net_tap_fd_init(vlan, "tap", name, fd);
2655 if (!s) {
2656 close(fd);
2657 }
2658 } else {
2659 const char *ifname, *script, *downscript;
2660
2661 ifname = qemu_opt_get(opts, "ifname");
2662 script = qemu_opt_get(opts, "script");
2663 downscript = qemu_opt_get(opts, "downscript");
2664
2665 if (!script) {
2666 script = DEFAULT_NETWORK_SCRIPT;
2667 }
2668 if (!downscript) {
2669 downscript = DEFAULT_NETWORK_DOWN_SCRIPT;
2670 }
2671
2672 s = net_tap_init(vlan, "tap", name, ifname, script, downscript);
2673 }
2674
2675 if (!s) {
2676 return -1;
2677 }
2678
2679 if (tap_set_sndbuf(s, opts) < 0) {
2680 return -1;
2681 }
2682
f6b134ac
MM		 2683 if (vlan) {
2684 vlan->nb_host_devs++;
2685 }
8a1c5235
MM		 2686
2687 return 0;
2688}
2689#endif
2690
f6b134ac
MM		 2691static int net_init_socket(QemuOpts *opts,
2692 Monitor *mon,
2693 const char *name,
2694 VLANState *vlan)
88ce16ca 2695{
88ce16ca
MM		 2696 if (qemu_opt_get(opts, "fd")) {
2697 int fd;
2698
2699 if (qemu_opt_get(opts, "listen") ||
2700 qemu_opt_get(opts, "connect") ||
2701 qemu_opt_get(opts, "mcast")) {
2702 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2703 return -1;
2704 }
2705
2706 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2707 if (fd == -1) {
2708 return -1;
2709 }
2710
2711 if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) {
2712 close(fd);
2713 return -1;
2714 }
2715 } else if (qemu_opt_get(opts, "listen")) {
2716 const char *listen;
2717
2718 if (qemu_opt_get(opts, "fd") ||
2719 qemu_opt_get(opts, "connect") ||
2720 qemu_opt_get(opts, "mcast")) {
2721 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2722 return -1;
2723 }
2724
2725 listen = qemu_opt_get(opts, "listen");
2726
2727 if (net_socket_listen_init(vlan, "socket", name, listen) == -1) {
2728 return -1;
2729 }
2730 } else if (qemu_opt_get(opts, "connect")) {
2731 const char *connect;
2732
2733 if (qemu_opt_get(opts, "fd") ||
2734 qemu_opt_get(opts, "listen") ||
2735 qemu_opt_get(opts, "mcast")) {
2736 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2737 return -1;
2738 }
2739
2740 connect = qemu_opt_get(opts, "connect");
2741
2742 if (net_socket_connect_init(vlan, "socket", name, connect) == -1) {
2743 return -1;
2744 }
2745 } else if (qemu_opt_get(opts, "mcast")) {
2746 const char *mcast;
2747
2748 if (qemu_opt_get(opts, "fd") ||
2749 qemu_opt_get(opts, "connect") ||
2750 qemu_opt_get(opts, "listen")) {
2751 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
2752 return -1;
2753 }
2754
2755 mcast = qemu_opt_get(opts, "mcast");
2756
2757 if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) {
2758 return -1;
2759 }
2760 } else {
2761 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
2762 return -1;
2763 }
2764
f6b134ac
MM		 2765 if (vlan) {
2766 vlan->nb_host_devs++;
2767 }
88ce16ca
MM		 2768
2769 return 0;
2770}
2771
dd51058d 2772#ifdef CONFIG_VDE
f6b134ac
MM		 2773static int net_init_vde(QemuOpts *opts,
2774 Monitor *mon,
2775 const char *name,
2776 VLANState *vlan)
dd51058d 2777{
dd51058d
MM		 2778 const char *sock;
2779 const char *group;
2780 int port, mode;
2781
dd51058d
MM		 2782 sock = qemu_opt_get(opts, "sock");
2783 group = qemu_opt_get(opts, "group");
2784
2785 port = qemu_opt_get_number(opts, "port", 0);
2786 mode = qemu_opt_get_number(opts, "mode", 0700);
2787
2788 if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) {
2789 return -1;
2790 }
2791
f6b134ac
MM		 2792 if (vlan) {
2793 vlan->nb_host_devs++;
2794 }
dd51058d
MM		 2795
2796 return 0;
2797}
2798#endif
2799
f6b134ac
MM		 2800static int net_init_dump(QemuOpts *opts,
2801 Monitor *mon,
2802 const char *name,
2803 VLANState *vlan)
ed2955c2 2804{
ed2955c2
MM		 2805 int len;
2806 const char *file;
ed2955c2
MM		 2807 char def_file[128];
2808
f6b134ac 2809 assert(vlan);
ed2955c2 2810
ed2955c2
MM		 2811 file = qemu_opt_get(opts, "file");
2812 if (!file) {
2813 snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id);
2814 file = def_file;
2815 }
2816
2817 len = qemu_opt_get_size(opts, "len", 65536);
2818
2819 return net_dump_init(vlan, "dump", name, file, len);
2820}
2821
f83c6e10
MM		 2822#define NET_COMMON_PARAMS_DESC \
2823 { \
2824 .name = "type", \
2825 .type = QEMU_OPT_STRING, \
2826 .help = "net client type (nic, tap etc.)", \
2827 }, { \
2828 .name = "vlan", \
2829 .type = QEMU_OPT_NUMBER, \
2830 .help = "vlan number", \
2831 }, { \
2832 .name = "name", \
2833 .type = QEMU_OPT_STRING, \
2834 .help = "identifier for monitor commands", \
2835 }
2836
6d952ebe
MM		 2837typedef int (*net_client_init_func)(QemuOpts *opts,
2838 Monitor *mon,
f6b134ac
MM		 2839 const char *name,
2840 VLANState *vlan);
f83c6e10
MM		 2841
2842/* magic number, but compiler will warn if too small */
2843#define NET_MAX_DESC 20
2844
2845static struct {
2846 const char *type;
2847 net_client_init_func init;
2848 QemuOptDesc desc[NET_MAX_DESC];
2849} net_client_types[] = {
2850 {
2851 .type = "none",
2852 .desc = {
2853 NET_COMMON_PARAMS_DESC,
2854 { /* end of list */ }
2855 },
2856 }, {
2857 .type = "nic",
2858 .init = net_init_nic,
2859 .desc = {
2860 NET_COMMON_PARAMS_DESC,
5869c4d5
MM		 2861 {
2862 .name = "netdev",
2863 .type = QEMU_OPT_STRING,
2864 .help = "id of -netdev to connect to",
2865 },
f83c6e10
MM		 2866 {
2867 .name = "macaddr",
2868 .type = QEMU_OPT_STRING,
2869 .help = "MAC address",
2870 }, {
2871 .name = "model",
2872 .type = QEMU_OPT_STRING,
2873 .help = "device model (e1000, rtl8139, virtio etc.)",
2874 }, {
2875 .name = "addr",
2876 .type = QEMU_OPT_STRING,
2877 .help = "PCI device address",
2878 }, {
2879 .name = "vectors",
2880 .type = QEMU_OPT_NUMBER,
2881 .help = "number of MSI-x vectors, 0 to disable MSI-X",
2882 },
2883 { /* end of list */ }
2884 },
ec302ffd
MM		 2885#ifdef CONFIG_SLIRP
2886 }, {
2887 .type = "user",
2888 .init = net_init_slirp,
2889 .desc = {
2890 NET_COMMON_PARAMS_DESC,
2891 {
2892 .name = "hostname",
2893 .type = QEMU_OPT_STRING,
2894 .help = "client hostname reported by the builtin DHCP server",
2895 }, {
2896 .name = "restrict",
2897 .type = QEMU_OPT_STRING,
2898 .help = "isolate the guest from the host (y|yes|n|no)",
2899 }, {
2900 .name = "ip",
2901 .type = QEMU_OPT_STRING,
2902 .help = "legacy parameter, use net= instead",
2903 }, {
2904 .name = "net",
2905 .type = QEMU_OPT_STRING,
2906 .help = "IP address and optional netmask",
2907 }, {
2908 .name = "host",
2909 .type = QEMU_OPT_STRING,
2910 .help = "guest-visible address of the host",
2911 }, {
2912 .name = "tftp",
2913 .type = QEMU_OPT_STRING,
2914 .help = "root directory of the built-in TFTP server",
2915 }, {
2916 .name = "bootfile",
2917 .type = QEMU_OPT_STRING,
2918 .help = "BOOTP filename, for use with tftp=",
2919 }, {
2920 .name = "dhcpstart",
2921 .type = QEMU_OPT_STRING,
2922 .help = "the first of the 16 IPs the built-in DHCP server can assign",
2923 }, {
2924 .name = "dns",
2925 .type = QEMU_OPT_STRING,
2926 .help = "guest-visible address of the virtual nameserver",
2927 }, {
2928 .name = "smb",
2929 .type = QEMU_OPT_STRING,
2930 .help = "root directory of the built-in SMB server",
2931 }, {
2932 .name = "smbserver",
2933 .type = QEMU_OPT_STRING,
2934 .help = "IP address of the built-in SMB server",
2935 }, {
2936 .name = "hostfwd",
2937 .type = QEMU_OPT_STRING,
2938 .help = "guest port number to forward incoming TCP or UDP connections",
2939 }, {
2940 .name = "guestfwd",
2941 .type = QEMU_OPT_STRING,
2942 .help = "IP address and port to forward guest TCP connections",
2943 },
2944 { /* end of list */ }
2945 },
8a1c5235
MM		 2946#endif
2947#ifdef _WIN32
2948 }, {
2949 .type = "tap",
2950 .init = net_init_tap_win32,
2951 .desc = {
2952 NET_COMMON_PARAMS_DESC,
2953 {
2954 .name = "ifname",
2955 .type = QEMU_OPT_STRING,
2956 .help = "interface name",
2957 },
2958 { /* end of list */ }
2959 },
2960#elif !defined(_AIX)
2961 }, {
2962 .type = "tap",
2963 .init = net_init_tap,
2964 .desc = {
2965 NET_COMMON_PARAMS_DESC,
2966 {
2967 .name = "fd",
2968 .type = QEMU_OPT_STRING,
2969 .help = "file descriptor of an already opened tap",
2970 }, {
2971 .name = "ifname",
2972 .type = QEMU_OPT_STRING,
2973 .help = "interface name",
2974 }, {
2975 .name = "script",
2976 .type = QEMU_OPT_STRING,
2977 .help = "script to initialize the interface",
2978 }, {
2979 .name = "downscript",
2980 .type = QEMU_OPT_STRING,
2981 .help = "script to shut down the interface",
2982#ifdef TUNSETSNDBUF
2983 }, {
2984 .name = "sndbuf",
2985 .type = QEMU_OPT_SIZE,
2986 .help = "send buffer limit"
2987#endif
2988 },
2989 { /* end of list */ }
2990 },
ec302ffd 2991#endif
88ce16ca
MM		 2992 }, {
2993 .type = "socket",
2994 .init = net_init_socket,
2995 .desc = {
2996 NET_COMMON_PARAMS_DESC,
2997 {
2998 .name = "fd",
2999 .type = QEMU_OPT_STRING,
3000 .help = "file descriptor of an already opened socket",
3001 }, {
3002 .name = "listen",
3003 .type = QEMU_OPT_STRING,
3004 .help = "port number, and optional hostname, to listen on",
3005 }, {
3006 .name = "connect",
3007 .type = QEMU_OPT_STRING,
3008 .help = "port number, and optional hostname, to connect to",
3009 }, {
3010 .name = "mcast",
3011 .type = QEMU_OPT_STRING,
3012 .help = "UDP multicast address and port number",
3013 },
3014 { /* end of list */ }
3015 },
dd51058d
MM		 3016#ifdef CONFIG_VDE
3017 }, {
3018 .type = "vde",
3019 .init = net_init_vde,
3020 .desc = {
3021 NET_COMMON_PARAMS_DESC,
3022 {
3023 .name = "sock",
3024 .type = QEMU_OPT_STRING,
3025 .help = "socket path",
3026 }, {
3027 .name = "port",
3028 .type = QEMU_OPT_NUMBER,
3029 .help = "port number",
3030 }, {
3031 .name = "group",
3032 .type = QEMU_OPT_STRING,
3033 .help = "group owner of socket",
3034 }, {
3035 .name = "mode",
3036 .type = QEMU_OPT_NUMBER,
3037 .help = "permissions for socket",
3038 },
3039 { /* end of list */ }
3040 },
3041#endif
ed2955c2
MM		 3042 }, {
3043 .type = "dump",
3044 .init = net_init_dump,
3045 .desc = {
3046 NET_COMMON_PARAMS_DESC,
3047 {
3048 .name = "len",
3049 .type = QEMU_OPT_SIZE,
3050 .help = "per-packet size limit (64k default)",
3051 }, {
3052 .name = "file",
3053 .type = QEMU_OPT_STRING,
3054 .help = "dump file path (default is qemu-vlan0.pcap)",
3055 },
3056 { /* end of list */ }
3057 },
f83c6e10
MM		 3058 },
3059 { /* end of list */ }
3060};
3061
f6b134ac 3062int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
f83c6e10 3063{
6d952ebe 3064 const char *name;
f83c6e10
MM		 3065 const char *type;
3066 int i;
3067
3068 type = qemu_opt_get(opts, "type");
3069 if (!type) {
3070 qemu_error("No type specified for -net\n");
3071 return -1;
3072 }
3073
f6b134ac
MM		 3074 if (is_netdev) {
3075 if (strcmp(type, "tap") != 0 &&
3076#ifdef CONFIG_SLIRP
3077 strcmp(type, "user") != 0 &&
3078#endif
3079#ifdef CONFIG_VDE
3080 strcmp(type, "vde") != 0 &&
3081#endif
3082 strcmp(type, "socket") != 0) {
3083 qemu_error("The '%s' network backend type is not valid with -netdev\n",
3084 type);
3085 return -1;
3086 }
3087
3088 if (qemu_opt_get(opts, "vlan")) {
3089 qemu_error("The 'vlan' parameter is not valid with -netdev\n");
3090 return -1;
3091 }
3092 if (qemu_opt_get(opts, "name")) {
3093 qemu_error("The 'name' parameter is not valid with -netdev\n");
3094 return -1;
3095 }
3096 if (!qemu_opts_id(opts)) {
3097 qemu_error("The id= parameter is required with -netdev\n");
3098 return -1;
3099 }
3100 }
3101
6d952ebe
MM		 3102 name = qemu_opts_id(opts);
3103 if (!name) {
3104 name = qemu_opt_get(opts, "name");
3105 }
3106
f83c6e10
MM		 3107 for (i = 0; net_client_types[i].type != NULL; i++) {
3108 if (!strcmp(net_client_types[i].type, type)) {
f6b134ac
MM		 3109 VLANState *vlan = NULL;
3110
f83c6e10
MM		 3111 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
3112 return -1;
3113 }
3114
5869c4d5
MM		 3115 /* Do not add to a vlan if it's a -netdev or a nic with a
3116 * netdev= parameter. */
3117 if (!(is_netdev ||
3118 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
f6b134ac
MM		 3119 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
3120 }
3121
f83c6e10 3122 if (net_client_types[i].init) {
f6b134ac 3123 return net_client_types[i].init(opts, mon, name, vlan);
f83c6e10
MM		 3124 } else {
3125 return 0;
3126 }
3127 }
3128 }
3129
3130 qemu_error("Invalid -net type '%s'\n", type);
3131 return -1;
3132}
3133
8b13c4a7
AL		 3134void net_client_uninit(NICInfo *nd)
3135{
d80b9fc6
MM		 3136 if (nd->vlan) {
3137 nd->vlan->nb_guest_devs--;
3138 }
8b13c4a7 3139 nb_nics--;
a9796703 3140
9203f520
MM		 3141 qemu_free(nd->model);
3142 qemu_free(nd->name);
3143 qemu_free(nd->devaddr);
a9796703 3144
d2cffe30 3145 nd->used = 0;
8b13c4a7
AL		 3146}
3147
6f338c34
AL		 3148static int net_host_check_device(const char *device)
3149{
3150 int i;
bb9ea79e 3151 const char *valid_param_list[] = { "tap", "socket", "dump"
6f338c34
AL		 3152#ifdef CONFIG_SLIRP
3153 ,"user"
3154#endif
3155#ifdef CONFIG_VDE
3156 ,"vde"
3157#endif
3158 };
3159 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
3160 if (!strncmp(valid_param_list[i], device,
3161 strlen(valid_param_list[i])))
3162 return 1;
3163 }
3164
3165 return 0;
3166}
3167
f18c16de 3168void net_host_device_add(Monitor *mon, const QDict *qdict)
6f338c34 3169{
f18c16de 3170 const char *device = qdict_get_str(qdict, "device");
7f1c9d20
MM		 3171 const char *opts_str = qdict_get_try_str(qdict, "opts");
3172 QemuOpts *opts;
f18c16de 3173
6f338c34 3174 if (!net_host_check_device(device)) {
376253ec 3175 monitor_printf(mon, "invalid host network device %s\n", device);
6f338c34
AL		 3176 return;
3177 }
7f1c9d20
MM		 3178
3179 opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
3180 if (!opts) {
3181 monitor_printf(mon, "parsing network options '%s' failed\n",
3182 opts_str ? opts_str : "");
3183 return;
3184 }
3185
3186 qemu_opt_set(opts, "type", device);
3187
f6b134ac 3188 if (net_client_init(mon, opts, 0) < 0) {
5c8be678
AL		 3189 monitor_printf(mon, "adding host network device %s failed\n", device);
3190 }
6f338c34
AL		 3191}
3192
f18c16de 3193void net_host_device_remove(Monitor *mon, const QDict *qdict)
6f338c34 3194{
6f338c34 3195 VLANClientState *vc;
f18c16de
LC		 3196 int vlan_id = qdict_get_int(qdict, "vlan_id");
3197 const char *device = qdict_get_str(qdict, "device");
6f338c34 3198
1a609520 3199 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
6f338c34 3200 if (!vc) {
6f338c34
AL		 3201 return;
3202 }
e8f1f9db
AL		 3203 if (!net_host_check_device(vc->model)) {
3204 monitor_printf(mon, "invalid host network device %s\n", device);
3205 return;
3206 }
6f338c34
AL		 3207 qemu_del_vlan_client(vc);
3208}
3209
406c8df3
GC		 3210void net_set_boot_mask(int net_boot_mask)
3211{
3212 int i;
3213
3214 /* Only the first four NICs may be bootable */
3215 net_boot_mask = net_boot_mask & 0xF;
3216
3217 for (i = 0; i < nb_nics; i++) {
3218 if (net_boot_mask & (1 << i)) {
3219 nd_table[i].bootable = 1;
3220 net_boot_mask &= ~(1 << i);
3221 }
3222 }
3223
3224 if (net_boot_mask) {
3225 fprintf(stderr, "Cannot boot from non-existent NIC\n");
3226 exit(1);
3227 }
3228}
3229
376253ec 3230void do_info_network(Monitor *mon)
63a01ef8
AL		 3231{
3232 VLANState *vlan;
63a01ef8 3233
5610c3aa
MM		 3234 QTAILQ_FOREACH(vlan, &vlans, next) {
3235 VLANClientState *vc;
3236
376253ec 3237 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
5610c3aa
MM		 3238
3239 QTAILQ_FOREACH(vc, &vlan->clients, next) {
376253ec 3240 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
5610c3aa 3241 }
63a01ef8
AL		 3242 }
3243}
3244
f18c16de 3245void do_set_link(Monitor *mon, const QDict *qdict)
436e5e53
AL		 3246{
3247 VLANState *vlan;
3248 VLANClientState *vc = NULL;
f18c16de
LC		 3249 const char *name = qdict_get_str(qdict, "name");
3250 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
436e5e53 3251
5610c3aa
MM		 3252 QTAILQ_FOREACH(vlan, &vlans, next) {
3253 QTAILQ_FOREACH(vc, &vlan->clients, next) {
3254 if (strcmp(vc->name, name) == 0) {
dd5de373 3255 goto done;
5610c3aa
MM		 3256 }
3257 }
3258 }
dd5de373 3259done:
436e5e53
AL		 3260
3261 if (!vc) {
7dc3fa09 3262 monitor_printf(mon, "could not find network device '%s'\n", name);
c3cf0d3f 3263 return;
436e5e53
AL		 3264 }
3265
3266 if (strcmp(up_or_down, "up") == 0)
3267 vc->link_down = 0;
3268 else if (strcmp(up_or_down, "down") == 0)
3269 vc->link_down = 1;
3270 else
376253ec
AL		 3271 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
3272 "valid\n", up_or_down);
436e5e53 3273
34b25ca7
AL		 3274 if (vc->link_status_changed)
3275 vc->link_status_changed(vc);
436e5e53
AL		 3276}
3277
63a01ef8
AL		 3278void net_cleanup(void)
3279{
3280 VLANState *vlan;
577c4af9 3281 VLANClientState *vc, *next_vc;
63a01ef8 3282
5610c3aa 3283 QTAILQ_FOREACH(vlan, &vlans, next) {
5610c3aa 3284 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
b946a153 3285 qemu_del_vlan_client(vc);
63a01ef8
AL		 3286 }
3287 }
577c4af9
MM		 3288
3289 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
3290 qemu_del_vlan_client(vc);
3291 }
63a01ef8
AL		 3292}
3293
dc1c9fe8 3294static void net_check_clients(void)
63a01ef8
AL		 3295{
3296 VLANState *vlan;
3297
5610c3aa 3298 QTAILQ_FOREACH(vlan, &vlans, next) {
63a01ef8
AL		 3299 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
3300 continue;
3301 if (vlan->nb_guest_devs == 0)
3302 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
3303 if (vlan->nb_host_devs == 0)
3304 fprintf(stderr,
3305 "Warning: vlan %d is not connected to host network\n",
3306 vlan->id);
3307 }
3308}
dc1c9fe8
MM		 3309
3310static int net_init_client(QemuOpts *opts, void *dummy)
3311{
f6b134ac
MM		 3312 return net_client_init(NULL, opts, 0);
3313}
3314
3315static int net_init_netdev(QemuOpts *opts, void *dummy)
3316{
3317 return net_client_init(NULL, opts, 1);
dc1c9fe8
MM		 3318}
3319
3320int net_init_clients(void)
3321{
3322 if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
3323 /* if no clients, we use a default config */
3324 qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
3325#ifdef CONFIG_SLIRP
3326 qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
3327#endif
3328 }
3329
5610c3aa 3330 QTAILQ_INIT(&vlans);
577c4af9 3331 QTAILQ_INIT(&non_vlan_clients);
5610c3aa 3332
f6b134ac
MM		 3333 if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1)
3334 return -1;
3335
dc1c9fe8
MM		 3336 if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
3337 return -1;
3338 }
3339
3340 net_check_clients();
3341
3342 return 0;
3343}
3344
7f161aae 3345int net_client_parse(QemuOptsList *opts_list, const char *optarg)
dc1c9fe8 3346{
a3a766e7 3347#if defined(CONFIG_SLIRP)
dc1c9fe8 3348 /* handle legacy -net channel,port:chr */
7f161aae
MM		 3349 if (!strcmp(opts_list->name, "net") &&
3350 !strncmp(optarg, "channel,", strlen("channel,"))) {
dc1c9fe8
MM		 3351 int ret;
3352
3353 optarg += strlen("channel,");
3354
3355 if (QTAILQ_EMPTY(&slirp_stacks)) {
3356 struct slirp_config_str *config;
3357
3358 config = qemu_malloc(sizeof(*config));
3359 pstrcpy(config->str, sizeof(config->str), optarg);
3360 config->flags = SLIRP_CFG_LEGACY;
3361 config->next = slirp_configs;
3362 slirp_configs = config;
3363 ret = 0;
3364 } else {
3365 ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
3366 }
3367
3368 return ret;
3369 }
a3a766e7 3370#endif
7f161aae 3371 if (!qemu_opts_parse(opts_list, optarg, "type")) {
dc1c9fe8
MM		 3372 return -1;
3373 }
3374
3375 return 0;
3376}
Qemu copy for testing