blob: 1deca85a216a0e9e593620271db3c5a6c2d71b63 [file] [log] [blame]
David 'Digit' Turner5d8f37a2009-09-14 14:32:27 -07001/*
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 */
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
David 'Digit' Turner2c538c82010-05-10 16:48:20 -070032/* Needed early for CONFIG_BSD etc. */
David 'Digit' Turner5d8f37a2009-09-14 14:32:27 -070033#include "config-host.h"
34
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>
41#include <sys/resource.h>
42#include <sys/socket.h>
43#include <netinet/in.h>
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>
52#include <dirent.h>
53#include <netdb.h>
54#include <sys/select.h>
David 'Digit' Turner2c538c82010-05-10 16:48:20 -070055#ifdef CONFIG_BSD
David 'Digit' Turner5d8f37a2009-09-14 14:32:27 -070056#include <sys/stat.h>
57#if defined(__FreeBSD__) || defined(__DragonFly__)
58#include <libutil.h>
59#else
60#include <util.h>
61#endif
62#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
63#include <freebsd/stdlib.h>
64#else
65#ifdef __linux__
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
96#if defined(__OpenBSD__)
97#include <util.h>
98#endif
99
100#if defined(CONFIG_VDE)
101#include <libvdeplug.h>
102#endif
103
104#ifdef _WIN32
105#include <windows.h>
106#include <malloc.h>
107#include <sys/timeb.h>
108#include <mmsystem.h>
109#define getopt_long_only getopt_long
110#define memalign(align, size) malloc(size)
111#endif
112
113#include "qemu-common.h"
114#include "net.h"
115#include "monitor.h"
116#include "sysemu.h"
117#include "qemu-timer.h"
118#include "qemu-char.h"
119#include "audio/audio.h"
120#include "qemu_socket.h"
121#include "qemu-log.h"
122
123#if defined(CONFIG_SLIRP)
124#include "libslirp.h"
125#endif
126
127
128static VLANState *first_vlan;
129
130/***********************************************************/
131/* network device redirectors */
132
133#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
134static void hex_dump(FILE *f, const uint8_t *buf, int size)
135{
136 int len, i, j, c;
137
138 for(i=0;i<size;i+=16) {
139 len = size - i;
140 if (len > 16)
141 len = 16;
142 fprintf(f, "%08x ", i);
143 for(j=0;j<16;j++) {
144 if (j < len)
145 fprintf(f, " %02x", buf[i+j]);
146 else
147 fprintf(f, " ");
148 }
149 fprintf(f, " ");
150 for(j=0;j<len;j++) {
151 c = buf[i+j];
152 if (c < ' ' || c > '~')
153 c = '.';
154 fprintf(f, "%c", c);
155 }
156 fprintf(f, "\n");
157 }
158}
159#endif
160
161static int parse_macaddr(uint8_t *macaddr, const char *p)
162{
163 int i;
164 char *last_char;
165 long int offset;
166
167 errno = 0;
168 offset = strtol(p, &last_char, 0);
169 if (0 == errno && '\0' == *last_char &&
170 offset >= 0 && offset <= 0xFFFFFF) {
171 macaddr[3] = (offset & 0xFF0000) >> 16;
172 macaddr[4] = (offset & 0xFF00) >> 8;
173 macaddr[5] = offset & 0xFF;
174 return 0;
175 } else {
176 for(i = 0; i < 6; i++) {
177 macaddr[i] = strtol(p, (char **)&p, 16);
178 if (i == 5) {
179 if (*p != '\0')
180 return -1;
181 } else {
182 if (*p != ':' && *p != '-')
183 return -1;
184 p++;
185 }
186 }
187 return 0;
188 }
189
190 return -1;
191}
192
193static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
194{
195 const char *p, *p1;
196 int len;
197 p = *pp;
198 p1 = strchr(p, sep);
199 if (!p1)
200 return -1;
201 len = p1 - p;
202 p1++;
203 if (buf_size > 0) {
204 if (len > buf_size - 1)
205 len = buf_size - 1;
206 memcpy(buf, p, len);
207 buf[len] = '\0';
208 }
209 *pp = p1;
210 return 0;
211}
212
213int parse_host_src_port(struct sockaddr_in *haddr,
214 struct sockaddr_in *saddr,
215 const char *input_str)
216{
217 char *str = strdup(input_str);
218 char *host_str = str;
219 char *src_str;
220 const char *src_str2;
221 char *ptr;
222
223 /*
224 * Chop off any extra arguments at the end of the string which
225 * would start with a comma, then fill in the src port information
226 * if it was provided else use the "any address" and "any port".
227 */
228 if ((ptr = strchr(str,',')))
229 *ptr = '\0';
230
231 if ((src_str = strchr(input_str,'@'))) {
232 *src_str = '\0';
233 src_str++;
234 }
235
236 if (parse_host_port(haddr, host_str) < 0)
237 goto fail;
238
239 src_str2 = src_str;
240 if (!src_str || *src_str == '\0')
241 src_str2 = ":0";
242
243 if (parse_host_port(saddr, src_str2) < 0)
244 goto fail;
245
246 free(str);
247 return(0);
248
249fail:
250 free(str);
251 return -1;
252}
253
254int parse_host_port(struct sockaddr_in *saddr, const char *str)
255{
256 char buf[512];
257 struct hostent *he;
258 const char *p, *r;
259 int port;
260
261 p = str;
262 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
263 return -1;
264 saddr->sin_family = AF_INET;
265 if (buf[0] == '\0') {
266 saddr->sin_addr.s_addr = 0;
267 } else {
268 if (qemu_isdigit(buf[0])) {
269 if (!inet_aton(buf, &saddr->sin_addr))
270 return -1;
271 } else {
272 if ((he = gethostbyname(buf)) == NULL)
273 return - 1;
274 saddr->sin_addr = *(struct in_addr *)he->h_addr;
275 }
276 }
277 port = strtol(p, (char **)&r, 0);
278 if (r == p)
279 return -1;
280 saddr->sin_port = htons(port);
281 return 0;
282}
283
284#if !defined(_WIN32) && 0
285static int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
286{
287 const char *p;
288 int len;
289
290 len = MIN(108, strlen(str));
291 p = strchr(str, ',');
292 if (p)
293 len = MIN(len, p - str);
294
295 memset(uaddr, 0, sizeof(*uaddr));
296
297 uaddr->sun_family = AF_UNIX;
298 memcpy(uaddr->sun_path, str, len);
299
300 return 0;
301}
302#endif
303
304void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
305{
306 snprintf(vc->info_str, sizeof(vc->info_str),
307 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
308 vc->model,
309 macaddr[0], macaddr[1], macaddr[2],
310 macaddr[3], macaddr[4], macaddr[5]);
311}
312
313static char *assign_name(VLANClientState *vc1, const char *model)
314{
315 VLANState *vlan;
316 char buf[256];
317 int id = 0;
318
319 for (vlan = first_vlan; vlan; vlan = vlan->next) {
320 VLANClientState *vc;
321
322 for (vc = vlan->first_client; vc; vc = vc->next)
323 if (vc != vc1 && strcmp(vc->model, model) == 0)
324 id++;
325 }
326
327 snprintf(buf, sizeof(buf), "%s.%d", model, id);
328
329 return strdup(buf);
330}
331
332VLANClientState *qemu_new_vlan_client(VLANState *vlan,
333 const char *model,
334 const char *name,
335 NetCanReceive *can_receive,
336 NetReceive *receive,
337 NetReceiveIOV *receive_iov,
338 NetCleanup *cleanup,
339 void *opaque)
340{
341 VLANClientState *vc, **pvc;
342 vc = qemu_mallocz(sizeof(VLANClientState));
343 vc->model = strdup(model);
344 if (name)
345 vc->name = strdup(name);
346 else
347 vc->name = assign_name(vc, model);
348 vc->can_receive = can_receive;
349 vc->receive = receive;
350 vc->receive_iov = receive_iov;
351 vc->cleanup = cleanup;
352 vc->opaque = opaque;
353 vc->vlan = vlan;
354
355 vc->next = NULL;
356 pvc = &vlan->first_client;
357 while (*pvc != NULL)
358 pvc = &(*pvc)->next;
359 *pvc = vc;
360 return vc;
361}
362
363void qemu_del_vlan_client(VLANClientState *vc)
364{
365 VLANClientState **pvc = &vc->vlan->first_client;
366
367 while (*pvc != NULL)
368 if (*pvc == vc) {
369 *pvc = vc->next;
370 if (vc->cleanup) {
371 vc->cleanup(vc);
372 }
373 free(vc->name);
374 free(vc->model);
375 qemu_free(vc);
376 break;
377 } else
378 pvc = &(*pvc)->next;
379}
380
381VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
382{
383 VLANClientState **pvc = &vlan->first_client;
384
385 while (*pvc != NULL)
386 if ((*pvc)->opaque == opaque)
387 return *pvc;
388 else
389 pvc = &(*pvc)->next;
390
391 return NULL;
392}
393
394int qemu_can_send_packet(VLANClientState *sender)
395{
396 VLANState *vlan = sender->vlan;
397 VLANClientState *vc;
398
399 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
400 if (vc == sender) {
401 continue;
402 }
403
404 /* no can_receive() handler, they can always receive */
405 if (!vc->can_receive || vc->can_receive(vc)) {
406 return 1;
407 }
408 }
409 return 0;
410}
411
412static int
413qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
414{
415 VLANClientState *vc;
416 int ret = -1;
417
418 sender->vlan->delivering = 1;
419
420 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
421 ssize_t len;
422
423 if (vc == sender) {
424 continue;
425 }
426
427 if (vc->link_down) {
428 ret = size;
429 continue;
430 }
431
432 len = vc->receive(vc, buf, size);
433
434 ret = (ret >= 0) ? ret : len;
435 }
436
437 sender->vlan->delivering = 0;
438
439 return ret;
440}
441
442void qemu_flush_queued_packets(VLANClientState *vc)
443{
444 VLANPacket *packet;
445
446 while ((packet = vc->vlan->send_queue) != NULL) {
447 int ret;
448
449 vc->vlan->send_queue = packet->next;
450
451 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
452 if (ret == 0 && packet->sent_cb != NULL) {
453 packet->next = vc->vlan->send_queue;
454 vc->vlan->send_queue = packet;
455 break;
456 }
457
458 if (packet->sent_cb)
459 packet->sent_cb(packet->sender);
460
461 qemu_free(packet);
462 }
463}
464
465static void qemu_enqueue_packet(VLANClientState *sender,
466 const uint8_t *buf, int size,
467 NetPacketSent *sent_cb)
468{
469 VLANPacket *packet;
470
471 packet = qemu_malloc(sizeof(VLANPacket) + size);
472 packet->next = sender->vlan->send_queue;
473 packet->sender = sender;
474 packet->size = size;
475 packet->sent_cb = sent_cb;
476 memcpy(packet->data, buf, size);
477 sender->vlan->send_queue = packet;
478}
479
480ssize_t qemu_send_packet_async(VLANClientState *sender,
481 const uint8_t *buf, int size,
482 NetPacketSent *sent_cb)
483{
484 int ret;
485
486 if (sender->link_down) {
487 return size;
488 }
489
490#ifdef DEBUG_NET
491 printf("vlan %d send:\n", sender->vlan->id);
492 hex_dump(stdout, buf, size);
493#endif
494
495 if (sender->vlan->delivering) {
496 qemu_enqueue_packet(sender, buf, size, NULL);
497 return size;
498 }
499
500 ret = qemu_deliver_packet(sender, buf, size);
501 if (ret == 0 && sent_cb != NULL) {
502 qemu_enqueue_packet(sender, buf, size, sent_cb);
503 return 0;
504 }
505
506 qemu_flush_queued_packets(sender);
507
508 return ret;
509}
510
511void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
512{
513 qemu_send_packet_async(vc, buf, size, NULL);
514}
515
516static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
517 int iovcnt)
518{
519 uint8_t buffer[4096];
520 size_t offset = 0;
521 int i;
522
523 for (i = 0; i < iovcnt; i++) {
524 size_t len;
525
526 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
527 memcpy(buffer + offset, iov[i].iov_base, len);
528 offset += len;
529 }
530
531 return vc->receive(vc, buffer, offset);
532}
533
534static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
535{
536 size_t offset = 0;
537 int i;
538
539 for (i = 0; i < iovcnt; i++)
540 offset += iov[i].iov_len;
541 return offset;
542}
543
544static int qemu_deliver_packet_iov(VLANClientState *sender,
545 const struct iovec *iov, int iovcnt)
546{
547 VLANClientState *vc;
548 int ret = -1;
549
550 sender->vlan->delivering = 1;
551
552 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
553 ssize_t len;
554
555 if (vc == sender) {
556 continue;
557 }
558
559 if (vc->link_down) {
560 ret = calc_iov_length(iov, iovcnt);
561 continue;
562 }
563
564 if (vc->receive_iov) {
565 len = vc->receive_iov(vc, iov, iovcnt);
566 } else {
567 len = vc_sendv_compat(vc, iov, iovcnt);
568 }
569
570 ret = (ret >= 0) ? ret : len;
571 }
572
573 sender->vlan->delivering = 0;
574
575 return ret;
576}
577
578static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
579 const struct iovec *iov, int iovcnt,
580 NetPacketSent *sent_cb)
581{
582 VLANPacket *packet;
583 size_t max_len = 0;
584 int i;
585
586 max_len = calc_iov_length(iov, iovcnt);
587
588 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
589 packet->next = sender->vlan->send_queue;
590 packet->sender = sender;
591 packet->sent_cb = sent_cb;
592 packet->size = 0;
593
594 for (i = 0; i < iovcnt; i++) {
595 size_t len = iov[i].iov_len;
596
597 memcpy(packet->data + packet->size, iov[i].iov_base, len);
598 packet->size += len;
599 }
600
601 sender->vlan->send_queue = packet;
602
603 return packet->size;
604}
605
606ssize_t qemu_sendv_packet_async(VLANClientState *sender,
607 const struct iovec *iov, int iovcnt,
608 NetPacketSent *sent_cb)
609{
610 int ret;
611
612 if (sender->link_down) {
613 return calc_iov_length(iov, iovcnt);
614 }
615
616 if (sender->vlan->delivering) {
617 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
618 }
619
620 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
621 if (ret == 0 && sent_cb != NULL) {
622 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
623 return 0;
624 }
625
626 qemu_flush_queued_packets(sender);
627
628 return ret;
629}
630
631ssize_t
632qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
633{
634 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
635}
636
637static void config_error(Monitor *mon, const char *fmt, ...)
638{
639 va_list ap;
640
641 va_start(ap, fmt);
642 if (mon) {
643 monitor_vprintf(mon, fmt, ap);
644 } else {
645 fprintf(stderr, "qemu: ");
646 vfprintf(stderr, fmt, ap);
647 exit(1);
648 }
649 va_end(ap);
650}
651
652#if defined(CONFIG_SLIRP)
653
654/* slirp network adapter */
655
656struct slirp_config_str {
657 struct slirp_config_str *next;
658 const char *str;
659};
660
661static int slirp_inited;
662static struct slirp_config_str *slirp_redirs;
663#ifndef _WIN32
664static const char *slirp_smb_export;
665#endif
666static VLANClientState *slirp_vc;
667
668#ifndef _WIN32
669static void slirp_smb(const char *exported_dir);
670#endif
671static void slirp_redirection(Monitor *mon, const char *redir_str);
672
673int slirp_can_output(void)
674{
675 return !slirp_vc || qemu_can_send_packet(slirp_vc);
676}
677
678void slirp_output(const uint8_t *pkt, int pkt_len)
679{
680#ifdef DEBUG_SLIRP
681 printf("slirp output:\n");
682 hex_dump(stdout, pkt, pkt_len);
683#endif
684 if (!slirp_vc)
685 return;
686 qemu_send_packet(slirp_vc, pkt, pkt_len);
687}
688
689int slirp_is_inited(void)
690{
691 return slirp_inited;
692}
693
694static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
695{
696#ifdef DEBUG_SLIRP
697 printf("slirp input:\n");
698 hex_dump(stdout, buf, size);
699#endif
700 slirp_input(buf, size);
701 return size;
702}
703
704static int slirp_in_use;
705
706static void net_slirp_cleanup(VLANClientState *vc)
707{
708 slirp_in_use = 0;
709}
710
711static int net_slirp_init(VLANState *vlan, const char *model, const char *name,
712 int restricted, const char *ip)
713{
714 if (slirp_in_use) {
715 /* slirp only supports a single instance so far */
716 return -1;
717 }
718 if (!slirp_inited) {
719 slirp_inited = 1;
720 slirp_init(restricted, ip);
721
722 while (slirp_redirs) {
723 struct slirp_config_str *config = slirp_redirs;
724
725 slirp_redirection(NULL, config->str);
726 slirp_redirs = config->next;
727 qemu_free(config);
728 }
729#ifndef _WIN32
730 if (slirp_smb_export) {
731 slirp_smb(slirp_smb_export);
732 }
733#endif
734 }
735
736 slirp_vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive,
737 NULL, net_slirp_cleanup, NULL);
738 slirp_vc->info_str[0] = '\0';
739 slirp_in_use = 1;
740 return 0;
741}
742
743static void net_slirp_redir_print(void *opaque, int is_udp,
744 struct in_addr *laddr, u_int lport,
745 struct in_addr *faddr, u_int fport)
746{
747 Monitor *mon = (Monitor *)opaque;
748 uint32_t h_addr;
749 uint32_t g_addr;
750 char buf[16];
751
752 h_addr = ntohl(faddr->s_addr);
753 g_addr = ntohl(laddr->s_addr);
754
755 monitor_printf(mon, " %s |", is_udp ? "udp" : "tcp" );
756 snprintf(buf, 15, "%d.%d.%d.%d", (h_addr >> 24) & 0xff,
757 (h_addr >> 16) & 0xff,
758 (h_addr >> 8) & 0xff,
759 (h_addr) & 0xff);
760 monitor_printf(mon, " %15s |", buf);
761 monitor_printf(mon, " %5d |", fport);
762
763 snprintf(buf, 15, "%d.%d.%d.%d", (g_addr >> 24) & 0xff,
764 (g_addr >> 16) & 0xff,
765 (g_addr >> 8) & 0xff,
766 (g_addr) & 0xff);
767 monitor_printf(mon, " %15s |", buf);
768 monitor_printf(mon, " %5d\n", lport);
769
770}
771
772static void net_slirp_redir_list(Monitor *mon)
773{
774 if (!mon)
775 return;
776
777 monitor_printf(mon, " Prot | Host Addr | HPort | Guest Addr | GPort\n");
778 monitor_printf(mon, " | | | | \n");
779 slirp_redir_loop(net_slirp_redir_print, mon);
780}
781
782static void net_slirp_redir_rm(Monitor *mon, const char *port_str)
783{
784 int host_port;
785 char buf[256] = "";
786 const char *p = port_str;
787 int is_udp = 0;
788 int n;
789
790 if (!mon)
791 return;
792
793 if (!port_str || !port_str[0])
794 goto fail_syntax;
795
796 get_str_sep(buf, sizeof(buf), &p, ':');
797
798 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
799 is_udp = 0;
800 } else if (!strcmp(buf, "udp")) {
801 is_udp = 1;
802 } else {
803 goto fail_syntax;
804 }
805
806 host_port = atoi(p);
807
808 n = slirp_redir_rm(is_udp, host_port);
809
810 monitor_printf(mon, "removed %d redirections to %s port %d\n", n,
811 is_udp ? "udp" : "tcp", host_port);
812 return;
813
814 fail_syntax:
815 monitor_printf(mon, "invalid format\n");
816}
817
818static void slirp_redirection(Monitor *mon, const char *redir_str)
819{
820 struct in_addr guest_addr;
821 int host_port, guest_port;
822 const char *p;
823 char buf[256], *r;
824 int is_udp;
825
826 p = redir_str;
827 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
828 goto fail_syntax;
829 }
830 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
831 is_udp = 0;
832 } else if (!strcmp(buf, "udp")) {
833 is_udp = 1;
834 } else {
835 goto fail_syntax;
836 }
837
838 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
839 goto fail_syntax;
840 }
841 host_port = strtol(buf, &r, 0);
842 if (r == buf) {
843 goto fail_syntax;
844 }
845
846 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
847 goto fail_syntax;
848 }
849 if (buf[0] == '\0') {
850 pstrcpy(buf, sizeof(buf), "10.0.2.15");
851 }
852 if (!inet_aton(buf, &guest_addr)) {
853 goto fail_syntax;
854 }
855
856 guest_port = strtol(p, &r, 0);
857 if (r == p) {
858 goto fail_syntax;
859 }
860
861 if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
862 config_error(mon, "could not set up redirection '%s'\n", redir_str);
863 }
864 return;
865
866 fail_syntax:
867 config_error(mon, "invalid redirection format '%s'\n", redir_str);
868}
869
870void net_slirp_redir(Monitor *mon, const char *redir_str, const char *redir_opt2)
871{
872 struct slirp_config_str *config;
873
874 if (!slirp_inited) {
875 if (mon) {
876 monitor_printf(mon, "user mode network stack not in use\n");
877 } else {
878 config = qemu_malloc(sizeof(*config));
879 config->str = redir_str;
880 config->next = slirp_redirs;
881 slirp_redirs = config;
882 }
883 return;
884 }
885
886 if (!strcmp(redir_str, "remove")) {
887 net_slirp_redir_rm(mon, redir_opt2);
888 return;
889 }
890
891 if (!strcmp(redir_str, "list")) {
892 net_slirp_redir_list(mon);
893 return;
894 }
895
896 slirp_redirection(mon, redir_str);
897}
898
899#ifndef _WIN32
900
901static char smb_dir[1024];
902
903static void erase_dir(char *dir_name)
904{
905 DIR *d;
906 struct dirent *de;
907 char filename[1024];
908
909 /* erase all the files in the directory */
910 if ((d = opendir(dir_name)) != NULL) {
911 for(;;) {
912 de = readdir(d);
913 if (!de)
914 break;
915 if (strcmp(de->d_name, ".") != 0 &&
916 strcmp(de->d_name, "..") != 0) {
917 snprintf(filename, sizeof(filename), "%s/%s",
918 smb_dir, de->d_name);
919 if (unlink(filename) != 0) /* is it a directory? */
920 erase_dir(filename);
921 }
922 }
923 closedir(d);
924 rmdir(dir_name);
925 }
926}
927
928/* automatic user mode samba server configuration */
929static void smb_exit(void)
930{
931 erase_dir(smb_dir);
932}
933
934static void slirp_smb(const char *exported_dir)
935{
936 char smb_conf[1024];
937 char smb_cmdline[1024];
938 FILE *f;
939
940 /* XXX: better tmp dir construction */
941 snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%ld", (long)getpid());
942 if (mkdir(smb_dir, 0700) < 0) {
943 fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
944 exit(1);
945 }
946 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
947
948 f = fopen(smb_conf, "w");
949 if (!f) {
950 fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
951 exit(1);
952 }
953 fprintf(f,
954 "[global]\n"
955 "private dir=%s\n"
956 "smb ports=0\n"
957 "socket address=127.0.0.1\n"
958 "pid directory=%s\n"
959 "lock directory=%s\n"
960 "log file=%s/log.smbd\n"
961 "smb passwd file=%s/smbpasswd\n"
962 "security = share\n"
963 "[qemu]\n"
964 "path=%s\n"
965 "read only=no\n"
966 "guest ok=yes\n",
967 smb_dir,
968 smb_dir,
969 smb_dir,
970 smb_dir,
971 smb_dir,
972 exported_dir
973 );
974 fclose(f);
975 atexit(smb_exit);
976
977 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
978 SMBD_COMMAND, smb_conf);
979
980 slirp_add_exec(0, smb_cmdline, 4, 139);
981}
982
983/* automatic user mode samba server configuration */
984void net_slirp_smb(const char *exported_dir)
985{
986 if (slirp_smb_export) {
987 fprintf(stderr, "-smb given twice\n");
988 exit(1);
989 }
990 slirp_smb_export = exported_dir;
991 if (slirp_inited) {
992 slirp_smb(exported_dir);
993 }
994}
995
996#endif /* !defined(_WIN32) */
997
998void do_info_slirp(Monitor *mon)
999{
1000 slirp_stats();
1001}
1002
1003struct VMChannel {
1004 CharDriverState *hd;
1005 int port;
1006};
1007
1008static int vmchannel_can_read(void *opaque)
1009{
1010 struct VMChannel *vmc = (struct VMChannel*)opaque;
1011 return slirp_socket_can_recv(4, vmc->port);
1012}
1013
1014static void vmchannel_read(void *opaque, const uint8_t *buf, int size)
1015{
1016 struct VMChannel *vmc = (struct VMChannel*)opaque;
1017 slirp_socket_recv(4, vmc->port, buf, size);
1018}
1019
1020#endif /* CONFIG_SLIRP */
1021
1022#if !defined(_WIN32)
1023
1024typedef struct TAPState {
1025 VLANClientState *vc;
1026 int fd;
1027 char down_script[1024];
1028 char down_script_arg[128];
1029 uint8_t buf[4096];
1030} TAPState;
1031
1032static int launch_script(const char *setup_script, const char *ifname, int fd);
1033
1034static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1035 int iovcnt)
1036{
1037 TAPState *s = vc->opaque;
1038 ssize_t len;
1039
1040 do {
1041 len = writev(s->fd, iov, iovcnt);
1042 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1043
1044 return len;
1045}
1046
1047static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1048{
1049 TAPState *s = vc->opaque;
1050 ssize_t len;
1051
1052 do {
1053 len = write(s->fd, buf, size);
1054 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1055
1056 return len;
1057}
1058
1059static int tap_can_send(void *opaque)
1060{
1061 TAPState *s = opaque;
1062
1063 return qemu_can_send_packet(s->vc);
1064}
1065
1066#ifdef __sun__
1067static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1068{
1069 struct strbuf sbuf;
1070 int f = 0;
1071
1072 sbuf.maxlen = maxlen;
1073 sbuf.buf = (char *)buf;
1074
1075 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1076}
1077#else
1078static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1079{
1080 return read(tapfd, buf, maxlen);
1081}
1082#endif
1083
1084static void tap_send(void *opaque);
1085
1086static void tap_send_completed(VLANClientState *vc)
1087{
1088 TAPState *s = vc->opaque;
1089
1090 qemu_set_fd_handler2(s->fd, tap_can_send, tap_send, NULL, s);
1091}
1092
1093static void tap_send(void *opaque)
1094{
1095 TAPState *s = opaque;
1096 int size;
1097
1098 do {
1099 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1100 if (size <= 0) {
1101 break;
1102 }
1103
1104 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1105 if (size == 0) {
1106 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
1107 }
1108 } while (size > 0);
1109}
1110
1111static void tap_cleanup(VLANClientState *vc)
1112{
1113 TAPState *s = vc->opaque;
1114
1115 if (s->down_script[0])
1116 launch_script(s->down_script, s->down_script_arg, s->fd);
1117
1118 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1119 close(s->fd);
1120 qemu_free(s);
1121}
1122
1123/* fd support */
1124
1125static TAPState *net_tap_fd_init(VLANState *vlan,
1126 const char *model,
1127 const char *name,
1128 int fd)
1129{
1130 TAPState *s;
1131
1132 s = qemu_mallocz(sizeof(TAPState));
1133 s->fd = fd;
1134 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1135 tap_receive_iov, tap_cleanup, s);
1136 qemu_set_fd_handler2(s->fd, tap_can_send, tap_send, NULL, s);
1137 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
1138 return s;
1139}
1140
David 'Digit' Turner2c538c82010-05-10 16:48:20 -07001141#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
David 'Digit' Turner5d8f37a2009-09-14 14:32:27 -07001142static int tap_open(char *ifname, int ifname_size)
1143{
1144 int fd;
1145 char *dev;
1146 struct stat s;
1147
1148 TFR(fd = open("/dev/tap", O_RDWR));
1149 if (fd < 0) {
1150 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1151 return -1;
1152 }
1153
1154 fstat(fd, &s);
1155 dev = devname(s.st_rdev, S_IFCHR);
1156 pstrcpy(ifname, ifname_size, dev);
1157
1158 fcntl(fd, F_SETFL, O_NONBLOCK);
1159 return fd;
1160}
1161#elif defined(__sun__)
1162#define TUNNEWPPA (('T'<<16) | 0x0001)
1163/*
1164 * Allocate TAP device, returns opened fd.
1165 * Stores dev name in the first arg(must be large enough).
1166 */
1167static int tap_alloc(char *dev, size_t dev_size)
1168{
1169 int tap_fd, if_fd, ppa = -1;
1170 static int ip_fd = 0;
1171 char *ptr;
1172
1173 static int arp_fd = 0;
1174 int ip_muxid, arp_muxid;
1175 struct strioctl strioc_if, strioc_ppa;
1176 int link_type = I_PLINK;;
1177 struct lifreq ifr;
1178 char actual_name[32] = "";
1179
1180 memset(&ifr, 0x0, sizeof(ifr));
1181
1182 if( *dev ){
1183 ptr = dev;
1184 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1185 ppa = atoi(ptr);
1186 }
1187
1188 /* Check if IP device was opened */
1189 if( ip_fd )
1190 close(ip_fd);
1191
1192 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1193 if (ip_fd < 0) {
1194 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1195 return -1;
1196 }
1197
1198 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1199 if (tap_fd < 0) {
1200 syslog(LOG_ERR, "Can't open /dev/tap");
1201 return -1;
1202 }
1203
1204 /* Assign a new PPA and get its unit number. */
1205 strioc_ppa.ic_cmd = TUNNEWPPA;
1206 strioc_ppa.ic_timout = 0;
1207 strioc_ppa.ic_len = sizeof(ppa);
1208 strioc_ppa.ic_dp = (char *)&ppa;
1209 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1210 syslog (LOG_ERR, "Can't assign new interface");
1211
1212 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1213 if (if_fd < 0) {
1214 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1215 return -1;
1216 }
1217 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1218 syslog(LOG_ERR, "Can't push IP module");
1219 return -1;
1220 }
1221
1222 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1223 syslog(LOG_ERR, "Can't get flags\n");
1224
1225 snprintf (actual_name, 32, "tap%d", ppa);
1226 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1227
1228 ifr.lifr_ppa = ppa;
1229 /* Assign ppa according to the unit number returned by tun device */
1230
1231 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1232 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1233 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1234 syslog (LOG_ERR, "Can't get flags\n");
1235 /* Push arp module to if_fd */
1236 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1237 syslog (LOG_ERR, "Can't push ARP module (2)");
1238
1239 /* Push arp module to ip_fd */
1240 if (ioctl (ip_fd, I_POP, NULL) < 0)
1241 syslog (LOG_ERR, "I_POP failed\n");
1242 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1243 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1244 /* Open arp_fd */
1245 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1246 if (arp_fd < 0)
1247 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1248
1249 /* Set ifname to arp */
1250 strioc_if.ic_cmd = SIOCSLIFNAME;
1251 strioc_if.ic_timout = 0;
1252 strioc_if.ic_len = sizeof(ifr);
1253 strioc_if.ic_dp = (char *)&ifr;
1254 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1255 syslog (LOG_ERR, "Can't set ifname to arp\n");
1256 }
1257
1258 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1259 syslog(LOG_ERR, "Can't link TAP device to IP");
1260 return -1;
1261 }
1262
1263 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1264 syslog (LOG_ERR, "Can't link TAP device to ARP");
1265
1266 close (if_fd);
1267
1268 memset(&ifr, 0x0, sizeof(ifr));
1269 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1270 ifr.lifr_ip_muxid = ip_muxid;
1271 ifr.lifr_arp_muxid = arp_muxid;
1272
1273 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1274 {
1275 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1276 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1277 syslog (LOG_ERR, "Can't set multiplexor id");
1278 }
1279
1280 snprintf(dev, dev_size, "tap%d", ppa);
1281 return tap_fd;
1282}
1283
1284static int tap_open(char *ifname, int ifname_size)
1285{
1286 char dev[10]="";
1287 int fd;
1288 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1289 fprintf(stderr, "Cannot allocate TAP device\n");
1290 return -1;
1291 }
1292 pstrcpy(ifname, ifname_size, dev);
1293 fcntl(fd, F_SETFL, O_NONBLOCK);
1294 return fd;
1295}
1296#elif defined (_AIX)
1297static int tap_open(char *ifname, int ifname_size)
1298{
1299 fprintf (stderr, "no tap on AIX\n");
1300 return -1;
1301}
1302#else
1303static int tap_open(char *ifname, int ifname_size)
1304{
1305 struct ifreq ifr;
1306 int fd, ret;
1307
1308 TFR(fd = open("/dev/net/tun", O_RDWR));
1309 if (fd < 0) {
1310 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1311 return -1;
1312 }
1313 memset(&ifr, 0, sizeof(ifr));
1314 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1315 if (ifname[0] != '\0')
1316 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1317 else
1318 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1319 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1320 if (ret != 0) {
1321 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1322 close(fd);
1323 return -1;
1324 }
1325 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1326 fcntl(fd, F_SETFL, O_NONBLOCK);
1327 return fd;
1328}
1329#endif
1330
1331static int launch_script(const char *setup_script, const char *ifname, int fd)
1332{
1333 sigset_t oldmask, mask;
1334 int pid, status;
1335 char *args[3];
1336 char **parg;
1337
1338 sigemptyset(&mask);
1339 sigaddset(&mask, SIGCHLD);
1340 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1341
1342 /* try to launch network script */
1343 pid = fork();
1344 if (pid == 0) {
1345 int open_max = sysconf(_SC_OPEN_MAX), i;
1346
1347 for (i = 0; i < open_max; i++) {
1348 if (i != STDIN_FILENO &&
1349 i != STDOUT_FILENO &&
1350 i != STDERR_FILENO &&
1351 i != fd) {
1352 close(i);
1353 }
1354 }
1355 parg = args;
1356 *parg++ = (char *)setup_script;
1357 *parg++ = (char *)ifname;
1358 *parg++ = NULL;
1359 execv(setup_script, args);
1360 _exit(1);
1361 } else if (pid > 0) {
1362 while (waitpid(pid, &status, 0) != pid) {
1363 /* loop */
1364 }
1365 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1366
1367 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1368 return 0;
1369 }
1370 }
1371 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1372 return -1;
1373}
1374
1375static int net_tap_init(VLANState *vlan, const char *model,
1376 const char *name, const char *ifname1,
1377 const char *setup_script, const char *down_script)
1378{
1379 TAPState *s;
1380 int fd;
1381 char ifname[128];
1382
1383 if (ifname1 != NULL)
1384 pstrcpy(ifname, sizeof(ifname), ifname1);
1385 else
1386 ifname[0] = '\0';
1387 TFR(fd = tap_open(ifname, sizeof(ifname)));
1388 if (fd < 0)
1389 return -1;
1390
1391 if (!setup_script || !strcmp(setup_script, "no"))
1392 setup_script = "";
1393 if (setup_script[0] != '\0') {
1394 if (launch_script(setup_script, ifname, fd))
1395 return -1;
1396 }
1397 s = net_tap_fd_init(vlan, model, name, fd);
1398 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1399 "ifname=%s,script=%s,downscript=%s",
1400 ifname, setup_script, down_script);
1401 if (down_script && strcmp(down_script, "no")) {
1402 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1403 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1404 }
1405 return 0;
1406}
1407
1408#endif /* !_WIN32 */
1409
1410#if defined(CONFIG_VDE)
1411typedef struct VDEState {
1412 VLANClientState *vc;
1413 VDECONN *vde;
1414} VDEState;
1415
1416static void vde_to_qemu(void *opaque)
1417{
1418 VDEState *s = opaque;
1419 uint8_t buf[4096];
1420 int size;
1421
1422 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1423 if (size > 0) {
1424 qemu_send_packet(s->vc, buf, size);
1425 }
1426}
1427
1428static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1429{
1430 VDEState *s = vc->opaque;
1431 ssize_t ret;
1432
1433 do {
1434 ret = vde_send(s->vde, (const char *)buf, size, 0);
1435 } while (ret < 0 && errno == EINTR);
1436
1437 return ret;
1438}
1439
1440static void vde_cleanup(VLANClientState *vc)
1441{
1442 VDEState *s = vc->opaque;
1443 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1444 vde_close(s->vde);
1445 qemu_free(s);
1446}
1447
1448static int net_vde_init(VLANState *vlan, const char *model,
1449 const char *name, const char *sock,
1450 int port, const char *group, int mode)
1451{
1452 VDEState *s;
1453 char *init_group = strlen(group) ? (char *)group : NULL;
1454 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1455
1456 struct vde_open_args args = {
1457 .port = port,
1458 .group = init_group,
1459 .mode = mode,
1460 };
1461
1462 s = qemu_mallocz(sizeof(VDEState));
1463 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1464 if (!s->vde){
1465 free(s);
1466 return -1;
1467 }
1468 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
1469 NULL, vde_cleanup, s);
1470 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1471 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1472 sock, vde_datafd(s->vde));
1473 return 0;
1474}
1475#endif
1476
1477/* network connection */
1478typedef struct NetSocketState {
1479 VLANClientState *vc;
1480 int fd;
1481 int state; /* 0 = getting length, 1 = getting data */
1482 unsigned int index;
1483 unsigned int packet_len;
1484 uint8_t buf[4096];
1485 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1486} NetSocketState;
1487
1488typedef struct NetSocketListenState {
1489 VLANState *vlan;
1490 char *model;
1491 char *name;
1492 int fd;
1493} NetSocketListenState;
1494
1495/* XXX: we consider we can send the whole packet without blocking */
1496static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1497{
1498 NetSocketState *s = vc->opaque;
1499 uint32_t len;
1500 len = htonl(size);
1501
1502 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1503 return send_all(s->fd, buf, size);
1504}
1505
1506static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1507{
1508 NetSocketState *s = vc->opaque;
1509
1510 return sendto(s->fd, (const void *)buf, size, 0,
1511 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1512}
1513
1514static void net_socket_send(void *opaque)
1515{
1516 NetSocketState *s = opaque;
1517 int size, err;
1518 unsigned l;
1519 uint8_t buf1[4096];
1520 const uint8_t *buf;
1521
1522 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1523 if (size < 0) {
1524 err = socket_error();
1525 if (err != EWOULDBLOCK)
1526 goto eoc;
1527 } else if (size == 0) {
1528 /* end of connection */
1529 eoc:
1530 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1531 closesocket(s->fd);
1532 return;
1533 }
1534 buf = buf1;
1535 while (size > 0) {
1536 /* reassemble a packet from the network */
1537 switch(s->state) {
1538 case 0:
1539 l = 4 - s->index;
1540 if (l > size)
1541 l = size;
1542 memcpy(s->buf + s->index, buf, l);
1543 buf += l;
1544 size -= l;
1545 s->index += l;
1546 if (s->index == 4) {
1547 /* got length */
1548 s->packet_len = ntohl(*(uint32_t *)s->buf);
1549 s->index = 0;
1550 s->state = 1;
1551 }
1552 break;
1553 case 1:
1554 l = s->packet_len - s->index;
1555 if (l > size)
1556 l = size;
1557 if (s->index + l <= sizeof(s->buf)) {
1558 memcpy(s->buf + s->index, buf, l);
1559 } else {
1560 fprintf(stderr, "serious error: oversized packet received,"
1561 "connection terminated.\n");
1562 s->state = 0;
1563 goto eoc;
1564 }
1565
1566 s->index += l;
1567 buf += l;
1568 size -= l;
1569 if (s->index >= s->packet_len) {
1570 qemu_send_packet(s->vc, s->buf, s->packet_len);
1571 s->index = 0;
1572 s->state = 0;
1573 }
1574 break;
1575 }
1576 }
1577}
1578
1579static void net_socket_send_dgram(void *opaque)
1580{
1581 NetSocketState *s = opaque;
1582 int size;
1583
1584 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1585 if (size < 0)
1586 return;
1587 if (size == 0) {
1588 /* end of connection */
1589 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1590 return;
1591 }
1592 qemu_send_packet(s->vc, s->buf, size);
1593}
1594
1595static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1596{
1597 struct ip_mreq imr;
1598 int fd;
1599 int val, ret;
1600 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1601 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1602 inet_ntoa(mcastaddr->sin_addr),
1603 (int)ntohl(mcastaddr->sin_addr.s_addr));
1604 return -1;
1605
1606 }
1607 fd = socket(PF_INET, SOCK_DGRAM, 0);
1608 if (fd < 0) {
1609 perror("socket(PF_INET, SOCK_DGRAM)");
1610 return -1;
1611 }
1612
1613 val = 1;
1614 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1615 (const char *)&val, sizeof(val));
1616 if (ret < 0) {
1617 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1618 goto fail;
1619 }
1620
1621 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1622 if (ret < 0) {
1623 perror("bind");
1624 goto fail;
1625 }
1626
1627 /* Add host to multicast group */
1628 imr.imr_multiaddr = mcastaddr->sin_addr;
1629 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1630
1631 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1632 (const char *)&imr, sizeof(struct ip_mreq));
1633 if (ret < 0) {
1634 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1635 goto fail;
1636 }
1637
1638 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1639 val = 1;
1640 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1641 (const char *)&val, sizeof(val));
1642 if (ret < 0) {
1643 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1644 goto fail;
1645 }
1646
1647 socket_set_nonblock(fd);
1648 return fd;
1649fail:
1650 if (fd >= 0)
1651 closesocket(fd);
1652 return -1;
1653}
1654
1655static void net_socket_cleanup(VLANClientState *vc)
1656{
1657 NetSocketState *s = vc->opaque;
1658 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1659 close(s->fd);
1660 qemu_free(s);
1661}
1662
1663static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1664 const char *model,
1665 const char *name,
1666 int fd, int is_connected)
1667{
1668 struct sockaddr_in saddr;
1669 int newfd;
1670 socklen_t saddr_len;
1671 NetSocketState *s;
1672
1673 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1674 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1675 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1676 */
1677
1678 if (is_connected) {
1679 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1680 /* must be bound */
1681 if (saddr.sin_addr.s_addr==0) {
1682 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1683 fd);
1684 return NULL;
1685 }
1686 /* clone dgram socket */
1687 newfd = net_socket_mcast_create(&saddr);
1688 if (newfd < 0) {
1689 /* error already reported by net_socket_mcast_create() */
1690 close(fd);
1691 return NULL;
1692 }
1693 /* clone newfd to fd, close newfd */
1694 dup2(newfd, fd);
1695 close(newfd);
1696
1697 } else {
1698 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1699 fd, strerror(errno));
1700 return NULL;
1701 }
1702 }
1703
1704 s = qemu_mallocz(sizeof(NetSocketState));
1705 s->fd = fd;
1706
1707 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
1708 NULL, net_socket_cleanup, s);
1709 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1710
1711 /* mcast: save bound address as dst */
1712 if (is_connected) s->dgram_dst=saddr;
1713
1714 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1715 "socket: fd=%d (%s mcast=%s:%d)",
1716 fd, is_connected? "cloned" : "",
1717 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1718 return s;
1719}
1720
1721static void net_socket_connect(void *opaque)
1722{
1723 NetSocketState *s = opaque;
1724 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1725}
1726
1727static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
1728 const char *model,
1729 const char *name,
1730 int fd, int is_connected)
1731{
1732 NetSocketState *s;
1733 s = qemu_mallocz(sizeof(NetSocketState));
1734 s->fd = fd;
1735 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
1736 NULL, net_socket_cleanup, s);
1737 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1738 "socket: fd=%d", fd);
1739 if (is_connected) {
1740 net_socket_connect(s);
1741 } else {
1742 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1743 }
1744 return s;
1745}
1746
1747static NetSocketState *net_socket_fd_init(VLANState *vlan,
1748 const char *model, const char *name,
1749 int fd, int is_connected)
1750{
1751 int so_type=-1, optlen=sizeof(so_type);
1752
1753 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
1754 (socklen_t *)&optlen)< 0) {
1755 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
1756 return NULL;
1757 }
1758 switch(so_type) {
1759 case SOCK_DGRAM:
1760 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
1761 case SOCK_STREAM:
1762 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1763 default:
1764 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
1765 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
1766 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1767 }
1768 return NULL;
1769}
1770
1771static void net_socket_accept(void *opaque)
1772{
1773 NetSocketListenState *s = opaque;
1774 NetSocketState *s1;
1775 struct sockaddr_in saddr;
1776 socklen_t len;
1777 int fd;
1778
1779 for(;;) {
1780 len = sizeof(saddr);
1781 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
1782 if (fd < 0 && errno != EINTR) {
1783 return;
1784 } else if (fd >= 0) {
1785 break;
1786 }
1787 }
1788 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
1789 if (!s1) {
1790 closesocket(fd);
1791 } else {
1792 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
1793 "socket: connection from %s:%d",
1794 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1795 }
1796}
1797
1798static int net_socket_listen_init(VLANState *vlan,
1799 const char *model,
1800 const char *name,
1801 const char *host_str)
1802{
1803 NetSocketListenState *s;
1804 int fd, val, ret;
1805 struct sockaddr_in saddr;
1806
1807 if (parse_host_port(&saddr, host_str) < 0)
1808 return -1;
1809
1810 s = qemu_mallocz(sizeof(NetSocketListenState));
1811
1812 fd = socket(PF_INET, SOCK_STREAM, 0);
1813 if (fd < 0) {
1814 perror("socket");
1815 return -1;
1816 }
1817 socket_set_nonblock(fd);
1818
1819 /* allow fast reuse */
1820 val = 1;
1821 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
1822
1823 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1824 if (ret < 0) {
1825 perror("bind");
1826 return -1;
1827 }
1828 ret = listen(fd, 0);
1829 if (ret < 0) {
1830 perror("listen");
1831 return -1;
1832 }
1833 s->vlan = vlan;
1834 s->model = strdup(model);
1835 s->name = name ? strdup(name) : NULL;
1836 s->fd = fd;
1837 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
1838 return 0;
1839}
1840
1841static int net_socket_connect_init(VLANState *vlan,
1842 const char *model,
1843 const char *name,
1844 const char *host_str)
1845{
1846 NetSocketState *s;
1847 int fd, connected, ret, err;
1848 struct sockaddr_in saddr;
1849
1850 if (parse_host_port(&saddr, host_str) < 0)
1851 return -1;
1852
1853 fd = socket(PF_INET, SOCK_STREAM, 0);
1854 if (fd < 0) {
1855 perror("socket");
1856 return -1;
1857 }
1858 socket_set_nonblock(fd);
1859
1860 connected = 0;
1861 for(;;) {
1862 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1863 if (ret < 0) {
1864 err = socket_error();
1865 if (err == EINTR || err == EWOULDBLOCK) {
1866 } else if (err == EINPROGRESS) {
1867 break;
1868#ifdef _WIN32
1869 } else if (err == WSAEALREADY) {
1870 break;
1871#endif
1872 } else {
1873 perror("connect");
1874 closesocket(fd);
1875 return -1;
1876 }
1877 } else {
1878 connected = 1;
1879 break;
1880 }
1881 }
1882 s = net_socket_fd_init(vlan, model, name, fd, connected);
1883 if (!s)
1884 return -1;
1885 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1886 "socket: connect to %s:%d",
1887 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1888 return 0;
1889}
1890
1891static int net_socket_mcast_init(VLANState *vlan,
1892 const char *model,
1893 const char *name,
1894 const char *host_str)
1895{
1896 NetSocketState *s;
1897 int fd;
1898 struct sockaddr_in saddr;
1899
1900 if (parse_host_port(&saddr, host_str) < 0)
1901 return -1;
1902
1903
1904 fd = net_socket_mcast_create(&saddr);
1905 if (fd < 0)
1906 return -1;
1907
1908 s = net_socket_fd_init(vlan, model, name, fd, 0);
1909 if (!s)
1910 return -1;
1911
1912 s->dgram_dst = saddr;
1913
1914 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1915 "socket: mcast=%s:%d",
1916 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1917 return 0;
1918
1919}
1920
1921typedef struct DumpState {
1922 VLANClientState *pcap_vc;
1923 int fd;
1924 int pcap_caplen;
1925} DumpState;
1926
1927#define PCAP_MAGIC 0xa1b2c3d4
1928
1929struct pcap_file_hdr {
1930 uint32_t magic;
1931 uint16_t version_major;
1932 uint16_t version_minor;
1933 int32_t thiszone;
1934 uint32_t sigfigs;
1935 uint32_t snaplen;
1936 uint32_t linktype;
1937};
1938
1939struct pcap_sf_pkthdr {
1940 struct {
1941 int32_t tv_sec;
1942 int32_t tv_usec;
1943 } ts;
1944 uint32_t caplen;
1945 uint32_t len;
1946};
1947
1948static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1949{
1950 DumpState *s = vc->opaque;
1951 struct pcap_sf_pkthdr hdr;
1952 int64_t ts;
1953 int caplen;
1954
1955 /* Early return in case of previous error. */
1956 if (s->fd < 0) {
1957 return size;
1958 }
1959
David 'Digit' Turnera7fb77d2010-05-10 23:50:54 -07001960 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
David 'Digit' Turner5d8f37a2009-09-14 14:32:27 -07001961 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
1962
1963 hdr.ts.tv_sec = ts / 1000000;
1964 hdr.ts.tv_usec = ts % 1000000;
1965 hdr.caplen = caplen;
1966 hdr.len = size;
1967 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
1968 write(s->fd, buf, caplen) != caplen) {
1969 qemu_log("-net dump write error - stop dump\n");
1970 close(s->fd);
1971 s->fd = -1;
1972 }
1973
1974 return size;
1975}
1976
1977static void net_dump_cleanup(VLANClientState *vc)
1978{
1979 DumpState *s = vc->opaque;
1980
1981 close(s->fd);
1982 qemu_free(s);
1983}
1984
1985static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
1986 const char *name, const char *filename, int len)
1987{
1988 struct pcap_file_hdr hdr;
1989 DumpState *s;
1990
1991 s = qemu_malloc(sizeof(DumpState));
1992
1993 s->fd = open(filename, O_CREAT | O_WRONLY, 0644);
1994 if (s->fd < 0) {
1995 config_error(mon, "-net dump: can't open %s\n", filename);
1996 return -1;
1997 }
1998
1999 s->pcap_caplen = len;
2000
2001 hdr.magic = PCAP_MAGIC;
2002 hdr.version_major = 2;
2003 hdr.version_minor = 4;
2004 hdr.thiszone = 0;
2005 hdr.sigfigs = 0;
2006 hdr.snaplen = s->pcap_caplen;
2007 hdr.linktype = 1;
2008
2009 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2010 config_error(mon, "-net dump write error: %s\n", strerror(errno));
2011 close(s->fd);
2012 qemu_free(s);
2013 return -1;
2014 }
2015
2016 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
2017 net_dump_cleanup, s);
2018 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2019 "dump to %s (len=%d)", filename, len);
2020 return 0;
2021}
2022
2023/* find or alloc a new VLAN */
2024VLANState *qemu_find_vlan(int id)
2025{
2026 VLANState **pvlan, *vlan;
2027 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2028 if (vlan->id == id)
2029 return vlan;
2030 }
2031 vlan = qemu_mallocz(sizeof(VLANState));
2032 vlan->id = id;
2033 vlan->next = NULL;
2034 pvlan = &first_vlan;
2035 while (*pvlan != NULL)
2036 pvlan = &(*pvlan)->next;
2037 *pvlan = vlan;
2038 return vlan;
2039}
2040
2041static int nic_get_free_idx(void)
2042{
2043 int index;
2044
2045 for (index = 0; index < MAX_NICS; index++)
2046 if (!nd_table[index].used)
2047 return index;
2048 return -1;
2049}
2050
2051void qemu_check_nic_model(NICInfo *nd, const char *model)
2052{
2053 const char *models[2];
2054
2055 models[0] = model;
2056 models[1] = NULL;
2057
2058 qemu_check_nic_model_list(nd, models, model);
2059}
2060
2061void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2062 const char *default_model)
2063{
2064 int i, exit_status = 0;
2065
2066 if (!nd->model)
2067 nd->model = strdup(default_model);
2068
2069 if (strcmp(nd->model, "?") != 0) {
2070 for (i = 0 ; models[i]; i++)
2071 if (strcmp(nd->model, models[i]) == 0)
2072 return;
2073
2074 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2075 exit_status = 1;
2076 }
2077
2078 fprintf(stderr, "qemu: Supported NIC models: ");
2079 for (i = 0 ; models[i]; i++)
2080 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2081
2082 exit(exit_status);
2083}
2084
2085int net_client_init(Monitor *mon, const char *device, const char *p)
2086{
2087 static const char * const fd_params[] = {
2088 "vlan", "name", "fd", NULL
2089 };
2090 char buf[1024];
2091 int vlan_id, ret;
2092 VLANState *vlan;
2093 char *name = NULL;
2094
2095 vlan_id = 0;
2096 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2097 vlan_id = strtol(buf, NULL, 0);
2098 }
2099 vlan = qemu_find_vlan(vlan_id);
2100
2101 if (get_param_value(buf, sizeof(buf), "name", p)) {
2102 name = qemu_strdup(buf);
2103 }
2104 if (!strcmp(device, "nic")) {
2105 static const char * const nic_params[] = {
2106 "vlan", "name", "macaddr", "model", NULL
2107 };
2108 NICInfo *nd;
2109 uint8_t *macaddr;
2110 int idx = nic_get_free_idx();
2111
2112 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
2113 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2114 ret = -1;
2115 goto out;
2116 }
2117 if (idx == -1 || nb_nics >= MAX_NICS) {
2118 config_error(mon, "Too Many NICs\n");
2119 ret = -1;
2120 goto out;
2121 }
2122 nd = &nd_table[idx];
2123 macaddr = nd->macaddr;
2124 macaddr[0] = 0x52;
2125 macaddr[1] = 0x54;
2126 macaddr[2] = 0x00;
2127 macaddr[3] = 0x12;
2128 macaddr[4] = 0x34;
2129 macaddr[5] = 0x56 + idx;
2130
2131 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2132 if (parse_macaddr(macaddr, buf) < 0) {
2133 config_error(mon, "invalid syntax for ethernet address\n");
2134 ret = -1;
2135 goto out;
2136 }
2137 }
2138 if (get_param_value(buf, sizeof(buf), "model", p)) {
2139 nd->model = strdup(buf);
2140 }
2141 nd->vlan = vlan;
2142 nd->name = name;
2143 nd->used = 1;
2144 name = NULL;
2145 nb_nics++;
2146 vlan->nb_guest_devs++;
2147 ret = idx;
2148 } else
2149 if (!strcmp(device, "none")) {
2150 if (*p != '\0') {
2151 config_error(mon, "'none' takes no parameters\n");
2152 ret = -1;
2153 goto out;
2154 }
2155 /* does nothing. It is needed to signal that no network cards
2156 are wanted */
2157 ret = 0;
2158 } else
2159#ifdef CONFIG_SLIRP
2160 if (!strcmp(device, "user")) {
2161 static const char * const slirp_params[] = {
2162 "vlan", "name", "hostname", "restrict", "ip", NULL
2163 };
2164 int restricted = 0;
2165 char *ip = NULL;
2166
2167 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
2168 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2169 ret = -1;
2170 goto out;
2171 }
2172 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
2173 pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
2174 }
2175 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
2176 restricted = (buf[0] == 'y') ? 1 : 0;
2177 }
2178 if (get_param_value(buf, sizeof(buf), "ip", p)) {
2179 ip = qemu_strdup(buf);
2180 }
2181 vlan->nb_host_devs++;
2182 ret = net_slirp_init(vlan, device, name, restricted, ip);
2183 qemu_free(ip);
2184 } else if (!strcmp(device, "channel")) {
2185 long port;
2186 char name[20], *devname;
2187 struct VMChannel *vmc;
2188
2189 port = strtol(p, &devname, 10);
2190 devname++;
2191 if (port < 1 || port > 65535) {
2192 config_error(mon, "vmchannel wrong port number\n");
2193 ret = -1;
2194 goto out;
2195 }
2196 vmc = malloc(sizeof(struct VMChannel));
2197 snprintf(name, 20, "vmchannel%ld", port);
2198 vmc->hd = qemu_chr_open(name, devname, NULL);
2199 if (!vmc->hd) {
2200 config_error(mon, "could not open vmchannel device '%s'\n",
2201 devname);
2202 ret = -1;
2203 goto out;
2204 }
2205 vmc->port = port;
2206 slirp_add_exec(3, vmc->hd, 4, port);
2207 qemu_chr_add_handlers(vmc->hd, vmchannel_can_read, vmchannel_read,
2208 NULL, vmc);
2209 ret = 0;
2210 } else
2211#endif
2212#ifdef _WIN32
2213 if (!strcmp(device, "tap")) {
2214 static const char * const tap_params[] = {
2215 "vlan", "name", "ifname", NULL
2216 };
2217 char ifname[64];
2218
2219 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
2220 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2221 ret = -1;
2222 goto out;
2223 }
2224 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2225 config_error(mon, "tap: no interface name\n");
2226 ret = -1;
2227 goto out;
2228 }
2229 vlan->nb_host_devs++;
2230 ret = tap_win32_init(vlan, device, name, ifname);
2231 } else
2232#elif defined (_AIX)
2233#else
2234 if (!strcmp(device, "tap")) {
2235 char ifname[64], chkbuf[64];
2236 char setup_script[1024], down_script[1024];
2237 int fd;
2238 vlan->nb_host_devs++;
2239 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2240 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2241 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2242 ret = -1;
2243 goto out;
2244 }
2245 fd = strtol(buf, NULL, 0);
2246 fcntl(fd, F_SETFL, O_NONBLOCK);
2247 net_tap_fd_init(vlan, device, name, fd);
2248 ret = 0;
2249 } else {
2250 static const char * const tap_params[] = {
2251 "vlan", "name", "ifname", "script", "downscript", NULL
2252 };
2253 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
2254 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2255 ret = -1;
2256 goto out;
2257 }
2258 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2259 ifname[0] = '\0';
2260 }
2261 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2262 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2263 }
2264 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2265 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2266 }
2267 ret = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2268 }
2269 } else
2270#endif
2271 if (!strcmp(device, "socket")) {
2272 char chkbuf[64];
2273 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2274 int fd;
2275 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2276 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2277 ret = -1;
2278 goto out;
2279 }
2280 fd = strtol(buf, NULL, 0);
2281 ret = -1;
2282 if (net_socket_fd_init(vlan, device, name, fd, 1))
2283 ret = 0;
2284 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
2285 static const char * const listen_params[] = {
2286 "vlan", "name", "listen", NULL
2287 };
2288 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
2289 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2290 ret = -1;
2291 goto out;
2292 }
2293 ret = net_socket_listen_init(vlan, device, name, buf);
2294 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
2295 static const char * const connect_params[] = {
2296 "vlan", "name", "connect", NULL
2297 };
2298 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
2299 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2300 ret = -1;
2301 goto out;
2302 }
2303 ret = net_socket_connect_init(vlan, device, name, buf);
2304 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
2305 static const char * const mcast_params[] = {
2306 "vlan", "name", "mcast", NULL
2307 };
2308 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
2309 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2310 ret = -1;
2311 goto out;
2312 }
2313 ret = net_socket_mcast_init(vlan, device, name, buf);
2314 } else {
2315 config_error(mon, "Unknown socket options: %s\n", p);
2316 ret = -1;
2317 goto out;
2318 }
2319 vlan->nb_host_devs++;
2320 } else
2321#ifdef CONFIG_VDE
2322 if (!strcmp(device, "vde")) {
2323 static const char * const vde_params[] = {
2324 "vlan", "name", "sock", "port", "group", "mode", NULL
2325 };
2326 char vde_sock[1024], vde_group[512];
2327 int vde_port, vde_mode;
2328
2329 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
2330 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2331 ret = -1;
2332 goto out;
2333 }
2334 vlan->nb_host_devs++;
2335 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2336 vde_sock[0] = '\0';
2337 }
2338 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2339 vde_port = strtol(buf, NULL, 10);
2340 } else {
2341 vde_port = 0;
2342 }
2343 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2344 vde_group[0] = '\0';
2345 }
2346 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2347 vde_mode = strtol(buf, NULL, 8);
2348 } else {
2349 vde_mode = 0700;
2350 }
2351 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
2352 } else
2353#endif
2354 if (!strcmp(device, "dump")) {
2355 int len = 65536;
2356
2357 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2358 len = strtol(buf, NULL, 0);
2359 }
2360 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2361 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2362 }
2363 ret = net_dump_init(mon, vlan, device, name, buf, len);
2364 } else {
2365 config_error(mon, "Unknown network device: %s\n", device);
2366 ret = -1;
2367 goto out;
2368 }
2369 if (ret < 0) {
2370 config_error(mon, "Could not initialize device '%s'\n", device);
2371 }
2372out:
2373 qemu_free(name);
2374 return ret;
2375}
2376
2377void net_client_uninit(NICInfo *nd)
2378{
2379 nd->vlan->nb_guest_devs--;
2380 nb_nics--;
2381 nd->used = 0;
2382 free((void *)nd->model);
2383}
2384
2385static int net_host_check_device(const char *device)
2386{
2387 int i;
2388 const char *valid_param_list[] = { "tap", "socket", "dump"
2389#ifdef CONFIG_SLIRP
2390 ,"user"
2391#endif
2392#ifdef CONFIG_VDE
2393 ,"vde"
2394#endif
2395 };
2396 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2397 if (!strncmp(valid_param_list[i], device,
2398 strlen(valid_param_list[i])))
2399 return 1;
2400 }
2401
2402 return 0;
2403}
2404
2405void net_host_device_add(Monitor *mon, const char *device, const char *opts)
2406{
2407 if (!net_host_check_device(device)) {
2408 monitor_printf(mon, "invalid host network device %s\n", device);
2409 return;
2410 }
2411 if (net_client_init(mon, device, opts ? opts : "") < 0) {
2412 monitor_printf(mon, "adding host network device %s failed\n", device);
2413 }
2414}
2415
2416void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
2417{
2418 VLANState *vlan;
2419 VLANClientState *vc;
2420
2421 vlan = qemu_find_vlan(vlan_id);
2422
2423 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
2424 if (!strcmp(vc->name, device)) {
2425 break;
2426 }
2427 }
2428
2429 if (!vc) {
2430 monitor_printf(mon, "can't find device %s\n", device);
2431 return;
2432 }
2433 if (!net_host_check_device(vc->model)) {
2434 monitor_printf(mon, "invalid host network device %s\n", device);
2435 return;
2436 }
2437 qemu_del_vlan_client(vc);
2438}
2439
2440int net_client_parse(const char *str)
2441{
2442 const char *p;
2443 char *q;
2444 char device[64];
2445
2446 p = str;
2447 q = device;
2448 while (*p != '\0' && *p != ',') {
2449 if ((q - device) < sizeof(device) - 1)
2450 *q++ = *p;
2451 p++;
2452 }
2453 *q = '\0';
2454 if (*p == ',')
2455 p++;
2456
2457 return net_client_init(NULL, device, p);
2458}
2459
2460void do_info_network(Monitor *mon)
2461{
2462 VLANState *vlan;
2463 VLANClientState *vc;
2464
2465 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2466 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
2467 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
2468 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
2469 }
2470}
2471
2472int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
2473{
2474 VLANState *vlan;
2475 VLANClientState *vc = NULL;
2476
2477 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2478 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2479 if (strcmp(vc->name, name) == 0)
2480 goto done;
2481done:
2482
2483 if (!vc) {
2484 monitor_printf(mon, "could not find network device '%s'", name);
2485 return 0;
2486 }
2487
2488 if (strcmp(up_or_down, "up") == 0)
2489 vc->link_down = 0;
2490 else if (strcmp(up_or_down, "down") == 0)
2491 vc->link_down = 1;
2492 else
2493 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2494 "valid\n", up_or_down);
2495
2496 if (vc->link_status_changed)
2497 vc->link_status_changed(vc);
2498
2499 return 1;
2500}
2501
2502void net_cleanup(void)
2503{
2504 VLANState *vlan;
2505
2506 /* close network clients */
2507 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2508 VLANClientState *vc = vlan->first_client;
2509
2510 while (vc) {
2511 VLANClientState *next = vc->next;
2512
2513 qemu_del_vlan_client(vc);
2514
2515 vc = next;
2516 }
2517 }
2518}
2519
2520void net_client_check(void)
2521{
2522 VLANState *vlan;
2523
2524 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2525 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2526 continue;
2527 if (vlan->nb_guest_devs == 0)
2528 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2529 if (vlan->nb_host_devs == 0)
2530 fprintf(stderr,
2531 "Warning: vlan %d is not connected to host network\n",
2532 vlan->id);
2533 }
2534}