RTC polling mode broken
[qemu-kvm/fedora.git] / net.c
blob3d3829de3c0607dfd07075ec0146addb776669ee
1 /*
2 * QEMU System Emulator
4 * Copyright (c) 2003-2008 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
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>
32 /* Needed early for HOST_BSD etc. */
33 #include "config-host.h"
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>
55 #ifdef HOST_BSD
56 #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>
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"
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
96 #if defined(__OpenBSD__)
97 #include <util.h>
98 #endif
100 #if defined(CONFIG_VDE)
101 #include <libvdeplug.h>
102 #endif
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
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"
123 #include "slirp/libslirp.h"
126 static VLANState *first_vlan;
128 /***********************************************************/
129 /* network device redirectors */
131 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
132 static void hex_dump(FILE *f, const uint8_t *buf, int size)
134 int len, i, j, c;
136 for(i=0;i<size;i+=16) {
137 len = size - i;
138 if (len > 16)
139 len = 16;
140 fprintf(f, "%08x ", i);
141 for(j=0;j<16;j++) {
142 if (j < len)
143 fprintf(f, " %02x", buf[i+j]);
144 else
145 fprintf(f, " ");
147 fprintf(f, " ");
148 for(j=0;j<len;j++) {
149 c = buf[i+j];
150 if (c < ' ' || c > '~')
151 c = '.';
152 fprintf(f, "%c", c);
154 fprintf(f, "\n");
157 #endif
159 static int parse_macaddr(uint8_t *macaddr, const char *p)
161 int i;
162 char *last_char;
163 long int offset;
165 errno = 0;
166 offset = strtol(p, &last_char, 0);
167 if (0 == errno && '\0' == *last_char &&
168 offset >= 0 && offset <= 0xFFFFFF) {
169 macaddr[3] = (offset & 0xFF0000) >> 16;
170 macaddr[4] = (offset & 0xFF00) >> 8;
171 macaddr[5] = offset & 0xFF;
172 return 0;
173 } else {
174 for(i = 0; i < 6; i++) {
175 macaddr[i] = strtol(p, (char **)&p, 16);
176 if (i == 5) {
177 if (*p != '\0')
178 return -1;
179 } else {
180 if (*p != ':' && *p != '-')
181 return -1;
182 p++;
185 return 0;
188 return -1;
191 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
193 const char *p, *p1;
194 int len;
195 p = *pp;
196 p1 = strchr(p, sep);
197 if (!p1)
198 return -1;
199 len = p1 - p;
200 p1++;
201 if (buf_size > 0) {
202 if (len > buf_size - 1)
203 len = buf_size - 1;
204 memcpy(buf, p, len);
205 buf[len] = '\0';
207 *pp = p1;
208 return 0;
211 int parse_host_src_port(struct sockaddr_in *haddr,
212 struct sockaddr_in *saddr,
213 const char *input_str)
215 char *str = strdup(input_str);
216 char *host_str = str;
217 char *src_str;
218 const char *src_str2;
219 char *ptr;
222 * Chop off any extra arguments at the end of the string which
223 * would start with a comma, then fill in the src port information
224 * if it was provided else use the "any address" and "any port".
226 if ((ptr = strchr(str,',')))
227 *ptr = '\0';
229 if ((src_str = strchr(input_str,'@'))) {
230 *src_str = '\0';
231 src_str++;
234 if (parse_host_port(haddr, host_str) < 0)
235 goto fail;
237 src_str2 = src_str;
238 if (!src_str || *src_str == '\0')
239 src_str2 = ":0";
241 if (parse_host_port(saddr, src_str2) < 0)
242 goto fail;
244 free(str);
245 return(0);
247 fail:
248 free(str);
249 return -1;
252 int parse_host_port(struct sockaddr_in *saddr, const char *str)
254 char buf[512];
255 struct hostent *he;
256 const char *p, *r;
257 int port;
259 p = str;
260 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
261 return -1;
262 saddr->sin_family = AF_INET;
263 if (buf[0] == '\0') {
264 saddr->sin_addr.s_addr = 0;
265 } else {
266 if (qemu_isdigit(buf[0])) {
267 if (!inet_aton(buf, &saddr->sin_addr))
268 return -1;
269 } else {
270 if ((he = gethostbyname(buf)) == NULL)
271 return - 1;
272 saddr->sin_addr = *(struct in_addr *)he->h_addr;
275 port = strtol(p, (char **)&r, 0);
276 if (r == p)
277 return -1;
278 saddr->sin_port = htons(port);
279 return 0;
282 #if !defined(_WIN32) && 0
283 static int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
285 const char *p;
286 int len;
288 len = MIN(108, strlen(str));
289 p = strchr(str, ',');
290 if (p)
291 len = MIN(len, p - str);
293 memset(uaddr, 0, sizeof(*uaddr));
295 uaddr->sun_family = AF_UNIX;
296 memcpy(uaddr->sun_path, str, len);
298 return 0;
300 #endif
302 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
304 snprintf(vc->info_str, sizeof(vc->info_str),
305 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
306 vc->model,
307 macaddr[0], macaddr[1], macaddr[2],
308 macaddr[3], macaddr[4], macaddr[5]);
311 static char *assign_name(VLANClientState *vc1, const char *model)
313 VLANState *vlan;
314 char buf[256];
315 int id = 0;
317 for (vlan = first_vlan; vlan; vlan = vlan->next) {
318 VLANClientState *vc;
320 for (vc = vlan->first_client; vc; vc = vc->next)
321 if (vc != vc1 && strcmp(vc->model, model) == 0)
322 id++;
325 snprintf(buf, sizeof(buf), "%s.%d", model, id);
327 return strdup(buf);
330 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
331 const char *model,
332 const char *name,
333 NetCanReceive *can_receive,
334 NetReceive *receive,
335 NetReceiveIOV *receive_iov,
336 NetCleanup *cleanup,
337 void *opaque)
339 VLANClientState *vc, **pvc;
340 vc = qemu_mallocz(sizeof(VLANClientState));
341 vc->model = strdup(model);
342 if (name)
343 vc->name = strdup(name);
344 else
345 vc->name = assign_name(vc, model);
346 vc->can_receive = can_receive;
347 vc->receive = receive;
348 vc->receive_iov = receive_iov;
349 vc->cleanup = cleanup;
350 vc->opaque = opaque;
351 vc->vlan = vlan;
353 vc->next = NULL;
354 pvc = &vlan->first_client;
355 while (*pvc != NULL)
356 pvc = &(*pvc)->next;
357 *pvc = vc;
358 return vc;
361 void qemu_del_vlan_client(VLANClientState *vc)
363 VLANClientState **pvc = &vc->vlan->first_client;
365 while (*pvc != NULL)
366 if (*pvc == vc) {
367 *pvc = vc->next;
368 if (vc->cleanup) {
369 vc->cleanup(vc);
371 free(vc->name);
372 free(vc->model);
373 qemu_free(vc);
374 break;
375 } else
376 pvc = &(*pvc)->next;
379 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
381 VLANClientState **pvc = &vlan->first_client;
383 while (*pvc != NULL)
384 if ((*pvc)->opaque == opaque)
385 return *pvc;
386 else
387 pvc = &(*pvc)->next;
389 return NULL;
392 static VLANClientState *
393 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
394 const char *client_str)
396 VLANState *vlan;
397 VLANClientState *vc;
399 vlan = qemu_find_vlan(vlan_id, 0);
400 if (!vlan) {
401 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
402 return NULL;
405 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
406 if (!strcmp(vc->name, client_str)) {
407 break;
410 if (!vc) {
411 monitor_printf(mon, "can't find device %s on VLAN %d\n",
412 client_str, vlan_id);
415 return vc;
418 int qemu_can_send_packet(VLANClientState *sender)
420 VLANState *vlan = sender->vlan;
421 VLANClientState *vc;
423 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
424 if (vc == sender) {
425 continue;
428 /* no can_receive() handler, they can always receive */
429 if (!vc->can_receive || vc->can_receive(vc)) {
430 return 1;
433 return 0;
436 static int
437 qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
439 VLANClientState *vc;
440 int ret = -1;
442 sender->vlan->delivering = 1;
444 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
445 ssize_t len;
447 if (vc == sender) {
448 continue;
451 if (vc->link_down) {
452 ret = size;
453 continue;
456 len = vc->receive(vc, buf, size);
458 ret = (ret >= 0) ? ret : len;
461 sender->vlan->delivering = 0;
463 return ret;
466 void qemu_purge_queued_packets(VLANClientState *vc)
468 VLANPacket *packet, *next;
470 TAILQ_FOREACH_SAFE(packet, &vc->vlan->send_queue, entry, next) {
471 if (packet->sender == vc) {
472 TAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
473 qemu_free(packet);
478 void qemu_flush_queued_packets(VLANClientState *vc)
480 while (!TAILQ_EMPTY(&vc->vlan->send_queue)) {
481 VLANPacket *packet;
482 int ret;
484 packet = TAILQ_FIRST(&vc->vlan->send_queue);
485 TAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
487 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
488 if (ret == 0 && packet->sent_cb != NULL) {
489 TAILQ_INSERT_HEAD(&vc->vlan->send_queue, packet, entry);
490 break;
493 if (packet->sent_cb)
494 packet->sent_cb(packet->sender, ret);
496 qemu_free(packet);
500 static void qemu_enqueue_packet(VLANClientState *sender,
501 const uint8_t *buf, int size,
502 NetPacketSent *sent_cb)
504 VLANPacket *packet;
506 packet = qemu_malloc(sizeof(VLANPacket) + size);
507 packet->sender = sender;
508 packet->size = size;
509 packet->sent_cb = sent_cb;
510 memcpy(packet->data, buf, size);
512 TAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
515 ssize_t qemu_send_packet_async(VLANClientState *sender,
516 const uint8_t *buf, int size,
517 NetPacketSent *sent_cb)
519 int ret;
521 if (sender->link_down) {
522 return size;
525 #ifdef DEBUG_NET
526 printf("vlan %d send:\n", sender->vlan->id);
527 hex_dump(stdout, buf, size);
528 #endif
530 if (sender->vlan->delivering) {
531 qemu_enqueue_packet(sender, buf, size, NULL);
532 return size;
535 ret = qemu_deliver_packet(sender, buf, size);
536 if (ret == 0 && sent_cb != NULL) {
537 qemu_enqueue_packet(sender, buf, size, sent_cb);
538 return 0;
541 qemu_flush_queued_packets(sender);
543 return ret;
546 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
548 qemu_send_packet_async(vc, buf, size, NULL);
551 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
552 int iovcnt)
554 uint8_t buffer[4096];
555 size_t offset = 0;
556 int i;
558 for (i = 0; i < iovcnt; i++) {
559 size_t len;
561 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
562 memcpy(buffer + offset, iov[i].iov_base, len);
563 offset += len;
566 return vc->receive(vc, buffer, offset);
569 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
571 size_t offset = 0;
572 int i;
574 for (i = 0; i < iovcnt; i++)
575 offset += iov[i].iov_len;
576 return offset;
579 static int qemu_deliver_packet_iov(VLANClientState *sender,
580 const struct iovec *iov, int iovcnt)
582 VLANClientState *vc;
583 int ret = -1;
585 sender->vlan->delivering = 1;
587 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
588 ssize_t len;
590 if (vc == sender) {
591 continue;
594 if (vc->link_down) {
595 ret = calc_iov_length(iov, iovcnt);
596 continue;
599 if (vc->receive_iov) {
600 len = vc->receive_iov(vc, iov, iovcnt);
601 } else {
602 len = vc_sendv_compat(vc, iov, iovcnt);
605 ret = (ret >= 0) ? ret : len;
608 sender->vlan->delivering = 0;
610 return ret;
613 static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
614 const struct iovec *iov, int iovcnt,
615 NetPacketSent *sent_cb)
617 VLANPacket *packet;
618 size_t max_len = 0;
619 int i;
621 max_len = calc_iov_length(iov, iovcnt);
623 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
624 packet->sender = sender;
625 packet->sent_cb = sent_cb;
626 packet->size = 0;
628 for (i = 0; i < iovcnt; i++) {
629 size_t len = iov[i].iov_len;
631 memcpy(packet->data + packet->size, iov[i].iov_base, len);
632 packet->size += len;
635 TAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
637 return packet->size;
640 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
641 const struct iovec *iov, int iovcnt,
642 NetPacketSent *sent_cb)
644 int ret;
646 if (sender->link_down) {
647 return calc_iov_length(iov, iovcnt);
650 if (sender->vlan->delivering) {
651 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
654 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
655 if (ret == 0 && sent_cb != NULL) {
656 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
657 return 0;
660 qemu_flush_queued_packets(sender);
662 return ret;
665 ssize_t
666 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
668 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
671 static void config_error(Monitor *mon, const char *fmt, ...)
673 va_list ap;
675 va_start(ap, fmt);
676 if (mon) {
677 monitor_vprintf(mon, fmt, ap);
678 } else {
679 fprintf(stderr, "qemu: ");
680 vfprintf(stderr, fmt, ap);
681 exit(1);
683 va_end(ap);
686 #if defined(CONFIG_SLIRP)
688 /* slirp network adapter */
690 #define SLIRP_CFG_HOSTFWD 1
691 #define SLIRP_CFG_LEGACY 2
693 struct slirp_config_str {
694 struct slirp_config_str *next;
695 int flags;
696 char str[1024];
697 int legacy_format;
700 typedef struct SlirpState {
701 TAILQ_ENTRY(SlirpState) entry;
702 VLANClientState *vc;
703 Slirp *slirp;
704 #ifndef _WIN32
705 char smb_dir[128];
706 #endif
707 } SlirpState;
709 static struct slirp_config_str *slirp_configs;
710 const char *legacy_tftp_prefix;
711 const char *legacy_bootp_filename;
712 static TAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
713 TAILQ_HEAD_INITIALIZER(slirp_stacks);
715 static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
716 int legacy_format);
717 static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
718 int legacy_format);
720 #ifndef _WIN32
721 static const char *legacy_smb_export;
723 static void slirp_smb(SlirpState *s, Monitor *mon, const char *exported_dir,
724 struct in_addr vserver_addr);
725 static void slirp_smb_cleanup(SlirpState *s);
726 #else
727 static inline void slirp_smb_cleanup(SlirpState *s) { }
728 #endif
730 int slirp_can_output(void *opaque)
732 SlirpState *s = opaque;
734 return qemu_can_send_packet(s->vc);
737 void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
739 SlirpState *s = opaque;
741 #ifdef DEBUG_SLIRP
742 printf("slirp output:\n");
743 hex_dump(stdout, pkt, pkt_len);
744 #endif
745 qemu_send_packet(s->vc, pkt, pkt_len);
748 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
750 SlirpState *s = vc->opaque;
752 #ifdef DEBUG_SLIRP
753 printf("slirp input:\n");
754 hex_dump(stdout, buf, size);
755 #endif
756 slirp_input(s->slirp, buf, size);
757 return size;
760 static void net_slirp_cleanup(VLANClientState *vc)
762 SlirpState *s = vc->opaque;
764 slirp_cleanup(s->slirp);
765 slirp_smb_cleanup(s);
766 TAILQ_REMOVE(&slirp_stacks, s, entry);
767 qemu_free(s);
770 static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
771 const char *name, int restricted,
772 const char *vnetwork, const char *vhost,
773 const char *vhostname, const char *tftp_export,
774 const char *bootfile, const char *vdhcp_start,
775 const char *vnameserver, const char *smb_export,
776 const char *vsmbserver)
778 /* default settings according to historic slirp */
779 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
780 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
781 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
782 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
783 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
784 #ifndef _WIN32
785 struct in_addr smbsrv = { .s_addr = 0 };
786 #endif
787 SlirpState *s;
788 char buf[20];
789 uint32_t addr;
790 int shift;
791 char *end;
793 if (!tftp_export) {
794 tftp_export = legacy_tftp_prefix;
796 if (!bootfile) {
797 bootfile = legacy_bootp_filename;
800 if (vnetwork) {
801 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
802 if (!inet_aton(vnetwork, &net)) {
803 return -1;
805 addr = ntohl(net.s_addr);
806 if (!(addr & 0x80000000)) {
807 mask.s_addr = htonl(0xff000000); /* class A */
808 } else if ((addr & 0xfff00000) == 0xac100000) {
809 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
810 } else if ((addr & 0xc0000000) == 0x80000000) {
811 mask.s_addr = htonl(0xffff0000); /* class B */
812 } else if ((addr & 0xffff0000) == 0xc0a80000) {
813 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
814 } else if ((addr & 0xffff0000) == 0xc6120000) {
815 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
816 } else if ((addr & 0xe0000000) == 0xe0000000) {
817 mask.s_addr = htonl(0xffffff00); /* class C */
818 } else {
819 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
821 } else {
822 if (!inet_aton(buf, &net)) {
823 return -1;
825 shift = strtol(vnetwork, &end, 10);
826 if (*end != '\0') {
827 if (!inet_aton(vnetwork, &mask)) {
828 return -1;
830 } else if (shift < 4 || shift > 32) {
831 return -1;
832 } else {
833 mask.s_addr = htonl(0xffffffff << (32 - shift));
836 net.s_addr &= mask.s_addr;
837 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
838 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
839 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
842 if (vhost && !inet_aton(vhost, &host)) {
843 return -1;
845 if ((host.s_addr & mask.s_addr) != net.s_addr) {
846 return -1;
849 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
850 return -1;
852 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
853 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
854 return -1;
857 if (vnameserver && !inet_aton(vnameserver, &dns)) {
858 return -1;
860 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
861 dns.s_addr == host.s_addr) {
862 return -1;
865 #ifndef _WIN32
866 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
867 return -1;
869 #endif
871 s = qemu_mallocz(sizeof(SlirpState));
872 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
873 tftp_export, bootfile, dhcp, dns, s);
874 TAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
876 while (slirp_configs) {
877 struct slirp_config_str *config = slirp_configs;
879 if (config->flags & SLIRP_CFG_HOSTFWD) {
880 slirp_hostfwd(s, mon, config->str,
881 config->flags & SLIRP_CFG_LEGACY);
882 } else {
883 slirp_guestfwd(s, mon, config->str,
884 config->flags & SLIRP_CFG_LEGACY);
886 slirp_configs = config->next;
887 qemu_free(config);
889 #ifndef _WIN32
890 if (!smb_export) {
891 smb_export = legacy_smb_export;
893 if (smb_export) {
894 slirp_smb(s, mon, smb_export, smbsrv);
896 #endif
898 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
899 net_slirp_cleanup, s);
900 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
901 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
902 return 0;
905 static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
906 const char *stack)
908 VLANClientState *vc;
910 if (vlan) {
911 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
912 if (!vc) {
913 return NULL;
915 if (strcmp(vc->model, "user")) {
916 monitor_printf(mon, "invalid device specified\n");
917 return NULL;
919 return vc->opaque;
920 } else {
921 if (TAILQ_EMPTY(&slirp_stacks)) {
922 monitor_printf(mon, "user mode network stack not in use\n");
923 return NULL;
925 return TAILQ_FIRST(&slirp_stacks);
929 void net_slirp_hostfwd_remove(Monitor *mon, const char *arg1,
930 const char *arg2, const char *arg3)
932 struct in_addr host_addr = { .s_addr = INADDR_ANY };
933 int host_port;
934 char buf[256] = "";
935 const char *src_str, *p;
936 SlirpState *s;
937 int is_udp = 0;
938 int err;
940 if (arg2) {
941 s = slirp_lookup(mon, arg1, arg2);
942 src_str = arg3;
943 } else {
944 s = slirp_lookup(mon, NULL, NULL);
945 src_str = arg1;
947 if (!s) {
948 return;
951 if (!src_str || !src_str[0])
952 goto fail_syntax;
954 p = src_str;
955 get_str_sep(buf, sizeof(buf), &p, ':');
957 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
958 is_udp = 0;
959 } else if (!strcmp(buf, "udp")) {
960 is_udp = 1;
961 } else {
962 goto fail_syntax;
965 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
966 goto fail_syntax;
968 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
969 goto fail_syntax;
972 host_port = atoi(p);
974 err = slirp_remove_hostfwd(TAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
975 host_addr, host_port);
977 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
978 err ? "removed" : "not found");
979 return;
981 fail_syntax:
982 monitor_printf(mon, "invalid format\n");
985 static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
986 int legacy_format)
988 struct in_addr host_addr = { .s_addr = INADDR_ANY };
989 struct in_addr guest_addr = { .s_addr = 0 };
990 int host_port, guest_port;
991 const char *p;
992 char buf[256];
993 int is_udp;
994 char *end;
996 p = redir_str;
997 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
998 goto fail_syntax;
1000 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
1001 is_udp = 0;
1002 } else if (!strcmp(buf, "udp")) {
1003 is_udp = 1;
1004 } else {
1005 goto fail_syntax;
1008 if (!legacy_format) {
1009 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1010 goto fail_syntax;
1012 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
1013 goto fail_syntax;
1017 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
1018 goto fail_syntax;
1020 host_port = strtol(buf, &end, 0);
1021 if (*end != '\0' || host_port < 1 || host_port > 65535) {
1022 goto fail_syntax;
1025 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1026 goto fail_syntax;
1028 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
1029 goto fail_syntax;
1032 guest_port = strtol(p, &end, 0);
1033 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
1034 goto fail_syntax;
1037 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1038 guest_port) < 0) {
1039 config_error(mon, "could not set up host forwarding rule '%s'\n",
1040 redir_str);
1042 return;
1044 fail_syntax:
1045 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
1048 void net_slirp_hostfwd_add(Monitor *mon, const char *arg1,
1049 const char *arg2, const char *arg3)
1051 const char *redir_str;
1052 SlirpState *s;
1054 if (arg2) {
1055 s = slirp_lookup(mon, arg1, arg2);
1056 redir_str = arg3;
1057 } else {
1058 s = slirp_lookup(mon, NULL, NULL);
1059 redir_str = arg1;
1061 if (s) {
1062 slirp_hostfwd(s, mon, redir_str, 0);
1067 void net_slirp_redir(const char *redir_str)
1069 struct slirp_config_str *config;
1071 if (TAILQ_EMPTY(&slirp_stacks)) {
1072 config = qemu_malloc(sizeof(*config));
1073 pstrcpy(config->str, sizeof(config->str), redir_str);
1074 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
1075 config->next = slirp_configs;
1076 slirp_configs = config;
1077 return;
1080 slirp_hostfwd(TAILQ_FIRST(&slirp_stacks), NULL, redir_str, 1);
1083 #ifndef _WIN32
1085 /* automatic user mode samba server configuration */
1086 static void slirp_smb_cleanup(SlirpState *s)
1088 char cmd[128];
1090 if (s->smb_dir[0] != '\0') {
1091 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1092 system(cmd);
1093 s->smb_dir[0] = '\0';
1097 static void slirp_smb(SlirpState* s, Monitor *mon, const char *exported_dir,
1098 struct in_addr vserver_addr)
1100 static int instance;
1101 char smb_conf[128];
1102 char smb_cmdline[128];
1103 FILE *f;
1105 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1106 (long)getpid(), instance++);
1107 if (mkdir(s->smb_dir, 0700) < 0) {
1108 config_error(mon, "could not create samba server dir '%s'\n",
1109 s->smb_dir);
1110 return;
1112 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
1114 f = fopen(smb_conf, "w");
1115 if (!f) {
1116 slirp_smb_cleanup(s);
1117 config_error(mon, "could not create samba server "
1118 "configuration file '%s'\n", smb_conf);
1119 return;
1121 fprintf(f,
1122 "[global]\n"
1123 "private dir=%s\n"
1124 "smb ports=0\n"
1125 "socket address=127.0.0.1\n"
1126 "pid directory=%s\n"
1127 "lock directory=%s\n"
1128 "log file=%s/log.smbd\n"
1129 "smb passwd file=%s/smbpasswd\n"
1130 "security = share\n"
1131 "[qemu]\n"
1132 "path=%s\n"
1133 "read only=no\n"
1134 "guest ok=yes\n",
1135 s->smb_dir,
1136 s->smb_dir,
1137 s->smb_dir,
1138 s->smb_dir,
1139 s->smb_dir,
1140 exported_dir
1142 fclose(f);
1144 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1145 SMBD_COMMAND, smb_conf);
1147 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
1148 slirp_smb_cleanup(s);
1149 config_error(mon, "conflicting/invalid smbserver address\n");
1153 /* automatic user mode samba server configuration (legacy interface) */
1154 void net_slirp_smb(const char *exported_dir)
1156 struct in_addr vserver_addr = { .s_addr = 0 };
1158 if (legacy_smb_export) {
1159 fprintf(stderr, "-smb given twice\n");
1160 exit(1);
1162 legacy_smb_export = exported_dir;
1163 if (!TAILQ_EMPTY(&slirp_stacks)) {
1164 slirp_smb(TAILQ_FIRST(&slirp_stacks), NULL, exported_dir,
1165 vserver_addr);
1169 #endif /* !defined(_WIN32) */
1171 struct GuestFwd {
1172 CharDriverState *hd;
1173 struct in_addr server;
1174 int port;
1175 Slirp *slirp;
1178 static int guestfwd_can_read(void *opaque)
1180 struct GuestFwd *fwd = opaque;
1181 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
1184 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1186 struct GuestFwd *fwd = opaque;
1187 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
1190 static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
1191 int legacy_format)
1193 struct in_addr server = { .s_addr = 0 };
1194 struct GuestFwd *fwd;
1195 const char *p;
1196 char buf[128];
1197 char *end;
1198 int port;
1200 p = config_str;
1201 if (legacy_format) {
1202 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1203 goto fail_syntax;
1205 } else {
1206 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1207 goto fail_syntax;
1209 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1210 goto fail_syntax;
1212 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1213 goto fail_syntax;
1215 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1216 goto fail_syntax;
1218 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1219 goto fail_syntax;
1222 port = strtol(buf, &end, 10);
1223 if (*end != '\0' || port < 1 || port > 65535) {
1224 goto fail_syntax;
1227 fwd = qemu_malloc(sizeof(struct GuestFwd));
1228 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1229 fwd->hd = qemu_chr_open(buf, p, NULL);
1230 if (!fwd->hd) {
1231 config_error(mon, "could not open guest forwarding device '%s'\n",
1232 buf);
1233 qemu_free(fwd);
1234 return;
1237 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
1238 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1239 "rule '%s'\n", config_str);
1240 qemu_free(fwd);
1241 return;
1243 fwd->server = server;
1244 fwd->port = port;
1245 fwd->slirp = s->slirp;
1247 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1248 NULL, fwd);
1249 return;
1251 fail_syntax:
1252 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
1255 void do_info_usernet(Monitor *mon)
1257 SlirpState *s;
1259 TAILQ_FOREACH(s, &slirp_stacks, entry) {
1260 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1261 slirp_connection_info(s->slirp, mon);
1265 #endif /* CONFIG_SLIRP */
1267 #if !defined(_WIN32)
1269 typedef struct TAPState {
1270 VLANClientState *vc;
1271 int fd;
1272 char down_script[1024];
1273 char down_script_arg[128];
1274 uint8_t buf[4096];
1275 unsigned int read_poll : 1;
1276 unsigned int write_poll : 1;
1277 } TAPState;
1279 static int launch_script(const char *setup_script, const char *ifname, int fd);
1281 static int tap_can_send(void *opaque);
1282 static void tap_send(void *opaque);
1283 static void tap_writable(void *opaque);
1285 static void tap_update_fd_handler(TAPState *s)
1287 qemu_set_fd_handler2(s->fd,
1288 s->read_poll ? tap_can_send : NULL,
1289 s->read_poll ? tap_send : NULL,
1290 s->write_poll ? tap_writable : NULL,
1294 static void tap_read_poll(TAPState *s, int enable)
1296 s->read_poll = !!enable;
1297 tap_update_fd_handler(s);
1300 static void tap_write_poll(TAPState *s, int enable)
1302 s->write_poll = !!enable;
1303 tap_update_fd_handler(s);
1306 static void tap_writable(void *opaque)
1308 TAPState *s = opaque;
1310 tap_write_poll(s, 0);
1312 qemu_flush_queued_packets(s->vc);
1315 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1316 int iovcnt)
1318 TAPState *s = vc->opaque;
1319 ssize_t len;
1321 do {
1322 len = writev(s->fd, iov, iovcnt);
1323 } while (len == -1 && errno == EINTR);
1325 if (len == -1 && errno == EAGAIN) {
1326 tap_write_poll(s, 1);
1327 return 0;
1330 return len;
1333 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1335 TAPState *s = vc->opaque;
1336 ssize_t len;
1338 do {
1339 len = write(s->fd, buf, size);
1340 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1342 return len;
1345 static int tap_can_send(void *opaque)
1347 TAPState *s = opaque;
1349 return qemu_can_send_packet(s->vc);
1352 #ifdef __sun__
1353 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1355 struct strbuf sbuf;
1356 int f = 0;
1358 sbuf.maxlen = maxlen;
1359 sbuf.buf = (char *)buf;
1361 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1363 #else
1364 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1366 return read(tapfd, buf, maxlen);
1368 #endif
1370 static void tap_send_completed(VLANClientState *vc, ssize_t len)
1372 TAPState *s = vc->opaque;
1373 tap_read_poll(s, 1);
1376 static void tap_send(void *opaque)
1378 TAPState *s = opaque;
1379 int size;
1381 do {
1382 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1383 if (size <= 0) {
1384 break;
1387 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1388 if (size == 0) {
1389 tap_read_poll(s, 0);
1391 } while (size > 0);
1394 #ifdef TUNSETSNDBUF
1395 /* sndbuf should be set to a value lower than the tx queue
1396 * capacity of any destination network interface.
1397 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1398 * a good default, given a 1500 byte MTU.
1400 #define TAP_DEFAULT_SNDBUF 1024*1024
1402 static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1404 int sndbuf = TAP_DEFAULT_SNDBUF;
1406 if (sndbuf_str) {
1407 sndbuf = atoi(sndbuf_str);
1410 if (!sndbuf) {
1411 sndbuf = INT_MAX;
1414 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && sndbuf_str) {
1415 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1416 strerror(errno));
1419 #else
1420 static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1422 if (sndbuf_str) {
1423 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1426 #endif /* TUNSETSNDBUF */
1428 static void tap_cleanup(VLANClientState *vc)
1430 TAPState *s = vc->opaque;
1432 qemu_purge_queued_packets(vc);
1434 if (s->down_script[0])
1435 launch_script(s->down_script, s->down_script_arg, s->fd);
1437 tap_read_poll(s, 0);
1438 tap_write_poll(s, 0);
1439 close(s->fd);
1440 qemu_free(s);
1443 /* fd support */
1445 static TAPState *net_tap_fd_init(VLANState *vlan,
1446 const char *model,
1447 const char *name,
1448 int fd)
1450 TAPState *s;
1452 s = qemu_mallocz(sizeof(TAPState));
1453 s->fd = fd;
1454 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1455 tap_receive_iov, tap_cleanup, s);
1456 tap_read_poll(s, 1);
1457 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
1458 return s;
1461 #if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
1462 static int tap_open(char *ifname, int ifname_size)
1464 int fd;
1465 char *dev;
1466 struct stat s;
1468 TFR(fd = open("/dev/tap", O_RDWR));
1469 if (fd < 0) {
1470 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1471 return -1;
1474 fstat(fd, &s);
1475 dev = devname(s.st_rdev, S_IFCHR);
1476 pstrcpy(ifname, ifname_size, dev);
1478 fcntl(fd, F_SETFL, O_NONBLOCK);
1479 return fd;
1481 #elif defined(__sun__)
1482 #define TUNNEWPPA (('T'<<16) | 0x0001)
1484 * Allocate TAP device, returns opened fd.
1485 * Stores dev name in the first arg(must be large enough).
1487 static int tap_alloc(char *dev, size_t dev_size)
1489 int tap_fd, if_fd, ppa = -1;
1490 static int ip_fd = 0;
1491 char *ptr;
1493 static int arp_fd = 0;
1494 int ip_muxid, arp_muxid;
1495 struct strioctl strioc_if, strioc_ppa;
1496 int link_type = I_PLINK;;
1497 struct lifreq ifr;
1498 char actual_name[32] = "";
1500 memset(&ifr, 0x0, sizeof(ifr));
1502 if( *dev ){
1503 ptr = dev;
1504 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1505 ppa = atoi(ptr);
1508 /* Check if IP device was opened */
1509 if( ip_fd )
1510 close(ip_fd);
1512 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1513 if (ip_fd < 0) {
1514 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1515 return -1;
1518 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1519 if (tap_fd < 0) {
1520 syslog(LOG_ERR, "Can't open /dev/tap");
1521 return -1;
1524 /* Assign a new PPA and get its unit number. */
1525 strioc_ppa.ic_cmd = TUNNEWPPA;
1526 strioc_ppa.ic_timout = 0;
1527 strioc_ppa.ic_len = sizeof(ppa);
1528 strioc_ppa.ic_dp = (char *)&ppa;
1529 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1530 syslog (LOG_ERR, "Can't assign new interface");
1532 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1533 if (if_fd < 0) {
1534 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1535 return -1;
1537 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1538 syslog(LOG_ERR, "Can't push IP module");
1539 return -1;
1542 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1543 syslog(LOG_ERR, "Can't get flags\n");
1545 snprintf (actual_name, 32, "tap%d", ppa);
1546 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1548 ifr.lifr_ppa = ppa;
1549 /* Assign ppa according to the unit number returned by tun device */
1551 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1552 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1553 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1554 syslog (LOG_ERR, "Can't get flags\n");
1555 /* Push arp module to if_fd */
1556 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1557 syslog (LOG_ERR, "Can't push ARP module (2)");
1559 /* Push arp module to ip_fd */
1560 if (ioctl (ip_fd, I_POP, NULL) < 0)
1561 syslog (LOG_ERR, "I_POP failed\n");
1562 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1563 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1564 /* Open arp_fd */
1565 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1566 if (arp_fd < 0)
1567 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1569 /* Set ifname to arp */
1570 strioc_if.ic_cmd = SIOCSLIFNAME;
1571 strioc_if.ic_timout = 0;
1572 strioc_if.ic_len = sizeof(ifr);
1573 strioc_if.ic_dp = (char *)&ifr;
1574 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1575 syslog (LOG_ERR, "Can't set ifname to arp\n");
1578 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1579 syslog(LOG_ERR, "Can't link TAP device to IP");
1580 return -1;
1583 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1584 syslog (LOG_ERR, "Can't link TAP device to ARP");
1586 close (if_fd);
1588 memset(&ifr, 0x0, sizeof(ifr));
1589 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1590 ifr.lifr_ip_muxid = ip_muxid;
1591 ifr.lifr_arp_muxid = arp_muxid;
1593 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1595 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1596 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1597 syslog (LOG_ERR, "Can't set multiplexor id");
1600 snprintf(dev, dev_size, "tap%d", ppa);
1601 return tap_fd;
1604 static int tap_open(char *ifname, int ifname_size)
1606 char dev[10]="";
1607 int fd;
1608 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1609 fprintf(stderr, "Cannot allocate TAP device\n");
1610 return -1;
1612 pstrcpy(ifname, ifname_size, dev);
1613 fcntl(fd, F_SETFL, O_NONBLOCK);
1614 return fd;
1616 #elif defined (_AIX)
1617 static int tap_open(char *ifname, int ifname_size)
1619 fprintf (stderr, "no tap on AIX\n");
1620 return -1;
1622 #else
1623 static int tap_open(char *ifname, int ifname_size)
1625 struct ifreq ifr;
1626 int fd, ret;
1628 TFR(fd = open("/dev/net/tun", O_RDWR));
1629 if (fd < 0) {
1630 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1631 return -1;
1633 memset(&ifr, 0, sizeof(ifr));
1634 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1635 if (ifname[0] != '\0')
1636 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1637 else
1638 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1639 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1640 if (ret != 0) {
1641 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1642 close(fd);
1643 return -1;
1645 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1646 fcntl(fd, F_SETFL, O_NONBLOCK);
1647 return fd;
1649 #endif
1651 static int launch_script(const char *setup_script, const char *ifname, int fd)
1653 sigset_t oldmask, mask;
1654 int pid, status;
1655 char *args[3];
1656 char **parg;
1658 sigemptyset(&mask);
1659 sigaddset(&mask, SIGCHLD);
1660 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1662 /* try to launch network script */
1663 pid = fork();
1664 if (pid == 0) {
1665 int open_max = sysconf(_SC_OPEN_MAX), i;
1667 for (i = 0; i < open_max; i++) {
1668 if (i != STDIN_FILENO &&
1669 i != STDOUT_FILENO &&
1670 i != STDERR_FILENO &&
1671 i != fd) {
1672 close(i);
1675 parg = args;
1676 *parg++ = (char *)setup_script;
1677 *parg++ = (char *)ifname;
1678 *parg++ = NULL;
1679 execv(setup_script, args);
1680 _exit(1);
1681 } else if (pid > 0) {
1682 while (waitpid(pid, &status, 0) != pid) {
1683 /* loop */
1685 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1687 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1688 return 0;
1691 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1692 return -1;
1695 static TAPState *net_tap_init(VLANState *vlan, const char *model,
1696 const char *name, const char *ifname1,
1697 const char *setup_script, const char *down_script)
1699 TAPState *s;
1700 int fd;
1701 char ifname[128];
1703 if (ifname1 != NULL)
1704 pstrcpy(ifname, sizeof(ifname), ifname1);
1705 else
1706 ifname[0] = '\0';
1707 TFR(fd = tap_open(ifname, sizeof(ifname)));
1708 if (fd < 0)
1709 return NULL;
1711 if (!setup_script || !strcmp(setup_script, "no"))
1712 setup_script = "";
1713 if (setup_script[0] != '\0' &&
1714 launch_script(setup_script, ifname, fd)) {
1715 return NULL;
1717 s = net_tap_fd_init(vlan, model, name, fd);
1718 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1719 "ifname=%s,script=%s,downscript=%s",
1720 ifname, setup_script, down_script);
1721 if (down_script && strcmp(down_script, "no")) {
1722 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1723 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1725 return s;
1728 #endif /* !_WIN32 */
1730 #if defined(CONFIG_VDE)
1731 typedef struct VDEState {
1732 VLANClientState *vc;
1733 VDECONN *vde;
1734 } VDEState;
1736 static void vde_to_qemu(void *opaque)
1738 VDEState *s = opaque;
1739 uint8_t buf[4096];
1740 int size;
1742 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1743 if (size > 0) {
1744 qemu_send_packet(s->vc, buf, size);
1748 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1750 VDEState *s = vc->opaque;
1751 ssize_t ret;
1753 do {
1754 ret = vde_send(s->vde, (const char *)buf, size, 0);
1755 } while (ret < 0 && errno == EINTR);
1757 return ret;
1760 static void vde_cleanup(VLANClientState *vc)
1762 VDEState *s = vc->opaque;
1763 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1764 vde_close(s->vde);
1765 qemu_free(s);
1768 static int net_vde_init(VLANState *vlan, const char *model,
1769 const char *name, const char *sock,
1770 int port, const char *group, int mode)
1772 VDEState *s;
1773 char *init_group = strlen(group) ? (char *)group : NULL;
1774 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1776 struct vde_open_args args = {
1777 .port = port,
1778 .group = init_group,
1779 .mode = mode,
1782 s = qemu_mallocz(sizeof(VDEState));
1783 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1784 if (!s->vde){
1785 free(s);
1786 return -1;
1788 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
1789 NULL, vde_cleanup, s);
1790 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1791 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1792 sock, vde_datafd(s->vde));
1793 return 0;
1795 #endif
1797 /* network connection */
1798 typedef struct NetSocketState {
1799 VLANClientState *vc;
1800 int fd;
1801 int state; /* 0 = getting length, 1 = getting data */
1802 unsigned int index;
1803 unsigned int packet_len;
1804 uint8_t buf[4096];
1805 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1806 } NetSocketState;
1808 typedef struct NetSocketListenState {
1809 VLANState *vlan;
1810 char *model;
1811 char *name;
1812 int fd;
1813 } NetSocketListenState;
1815 /* XXX: we consider we can send the whole packet without blocking */
1816 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1818 NetSocketState *s = vc->opaque;
1819 uint32_t len;
1820 len = htonl(size);
1822 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1823 return send_all(s->fd, buf, size);
1826 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1828 NetSocketState *s = vc->opaque;
1830 return sendto(s->fd, (const void *)buf, size, 0,
1831 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1834 static void net_socket_send(void *opaque)
1836 NetSocketState *s = opaque;
1837 int size, err;
1838 unsigned l;
1839 uint8_t buf1[4096];
1840 const uint8_t *buf;
1842 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1843 if (size < 0) {
1844 err = socket_error();
1845 if (err != EWOULDBLOCK)
1846 goto eoc;
1847 } else if (size == 0) {
1848 /* end of connection */
1849 eoc:
1850 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1851 closesocket(s->fd);
1852 return;
1854 buf = buf1;
1855 while (size > 0) {
1856 /* reassemble a packet from the network */
1857 switch(s->state) {
1858 case 0:
1859 l = 4 - s->index;
1860 if (l > size)
1861 l = size;
1862 memcpy(s->buf + s->index, buf, l);
1863 buf += l;
1864 size -= l;
1865 s->index += l;
1866 if (s->index == 4) {
1867 /* got length */
1868 s->packet_len = ntohl(*(uint32_t *)s->buf);
1869 s->index = 0;
1870 s->state = 1;
1872 break;
1873 case 1:
1874 l = s->packet_len - s->index;
1875 if (l > size)
1876 l = size;
1877 if (s->index + l <= sizeof(s->buf)) {
1878 memcpy(s->buf + s->index, buf, l);
1879 } else {
1880 fprintf(stderr, "serious error: oversized packet received,"
1881 "connection terminated.\n");
1882 s->state = 0;
1883 goto eoc;
1886 s->index += l;
1887 buf += l;
1888 size -= l;
1889 if (s->index >= s->packet_len) {
1890 qemu_send_packet(s->vc, s->buf, s->packet_len);
1891 s->index = 0;
1892 s->state = 0;
1894 break;
1899 static void net_socket_send_dgram(void *opaque)
1901 NetSocketState *s = opaque;
1902 int size;
1904 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1905 if (size < 0)
1906 return;
1907 if (size == 0) {
1908 /* end of connection */
1909 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1910 return;
1912 qemu_send_packet(s->vc, s->buf, size);
1915 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1917 struct ip_mreq imr;
1918 int fd;
1919 int val, ret;
1920 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1921 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1922 inet_ntoa(mcastaddr->sin_addr),
1923 (int)ntohl(mcastaddr->sin_addr.s_addr));
1924 return -1;
1927 fd = socket(PF_INET, SOCK_DGRAM, 0);
1928 if (fd < 0) {
1929 perror("socket(PF_INET, SOCK_DGRAM)");
1930 return -1;
1933 val = 1;
1934 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1935 (const char *)&val, sizeof(val));
1936 if (ret < 0) {
1937 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1938 goto fail;
1941 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1942 if (ret < 0) {
1943 perror("bind");
1944 goto fail;
1947 /* Add host to multicast group */
1948 imr.imr_multiaddr = mcastaddr->sin_addr;
1949 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1951 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1952 (const char *)&imr, sizeof(struct ip_mreq));
1953 if (ret < 0) {
1954 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1955 goto fail;
1958 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1959 val = 1;
1960 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1961 (const char *)&val, sizeof(val));
1962 if (ret < 0) {
1963 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1964 goto fail;
1967 socket_set_nonblock(fd);
1968 return fd;
1969 fail:
1970 if (fd >= 0)
1971 closesocket(fd);
1972 return -1;
1975 static void net_socket_cleanup(VLANClientState *vc)
1977 NetSocketState *s = vc->opaque;
1978 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1979 close(s->fd);
1980 qemu_free(s);
1983 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1984 const char *model,
1985 const char *name,
1986 int fd, int is_connected)
1988 struct sockaddr_in saddr;
1989 int newfd;
1990 socklen_t saddr_len;
1991 NetSocketState *s;
1993 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1994 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1995 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1998 if (is_connected) {
1999 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
2000 /* must be bound */
2001 if (saddr.sin_addr.s_addr==0) {
2002 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
2003 fd);
2004 return NULL;
2006 /* clone dgram socket */
2007 newfd = net_socket_mcast_create(&saddr);
2008 if (newfd < 0) {
2009 /* error already reported by net_socket_mcast_create() */
2010 close(fd);
2011 return NULL;
2013 /* clone newfd to fd, close newfd */
2014 dup2(newfd, fd);
2015 close(newfd);
2017 } else {
2018 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2019 fd, strerror(errno));
2020 return NULL;
2024 s = qemu_mallocz(sizeof(NetSocketState));
2025 s->fd = fd;
2027 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
2028 NULL, net_socket_cleanup, s);
2029 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2031 /* mcast: save bound address as dst */
2032 if (is_connected) s->dgram_dst=saddr;
2034 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2035 "socket: fd=%d (%s mcast=%s:%d)",
2036 fd, is_connected? "cloned" : "",
2037 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2038 return s;
2041 static void net_socket_connect(void *opaque)
2043 NetSocketState *s = opaque;
2044 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2047 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2048 const char *model,
2049 const char *name,
2050 int fd, int is_connected)
2052 NetSocketState *s;
2053 s = qemu_mallocz(sizeof(NetSocketState));
2054 s->fd = fd;
2055 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
2056 NULL, net_socket_cleanup, s);
2057 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2058 "socket: fd=%d", fd);
2059 if (is_connected) {
2060 net_socket_connect(s);
2061 } else {
2062 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2064 return s;
2067 static NetSocketState *net_socket_fd_init(VLANState *vlan,
2068 const char *model, const char *name,
2069 int fd, int is_connected)
2071 int so_type=-1, optlen=sizeof(so_type);
2073 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2074 (socklen_t *)&optlen)< 0) {
2075 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2076 return NULL;
2078 switch(so_type) {
2079 case SOCK_DGRAM:
2080 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
2081 case SOCK_STREAM:
2082 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2083 default:
2084 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2085 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
2086 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2088 return NULL;
2091 static void net_socket_accept(void *opaque)
2093 NetSocketListenState *s = opaque;
2094 NetSocketState *s1;
2095 struct sockaddr_in saddr;
2096 socklen_t len;
2097 int fd;
2099 for(;;) {
2100 len = sizeof(saddr);
2101 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2102 if (fd < 0 && errno != EINTR) {
2103 return;
2104 } else if (fd >= 0) {
2105 break;
2108 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
2109 if (!s1) {
2110 closesocket(fd);
2111 } else {
2112 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2113 "socket: connection from %s:%d",
2114 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2118 static int net_socket_listen_init(VLANState *vlan,
2119 const char *model,
2120 const char *name,
2121 const char *host_str)
2123 NetSocketListenState *s;
2124 int fd, val, ret;
2125 struct sockaddr_in saddr;
2127 if (parse_host_port(&saddr, host_str) < 0)
2128 return -1;
2130 s = qemu_mallocz(sizeof(NetSocketListenState));
2132 fd = socket(PF_INET, SOCK_STREAM, 0);
2133 if (fd < 0) {
2134 perror("socket");
2135 return -1;
2137 socket_set_nonblock(fd);
2139 /* allow fast reuse */
2140 val = 1;
2141 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2143 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2144 if (ret < 0) {
2145 perror("bind");
2146 return -1;
2148 ret = listen(fd, 0);
2149 if (ret < 0) {
2150 perror("listen");
2151 return -1;
2153 s->vlan = vlan;
2154 s->model = strdup(model);
2155 s->name = name ? strdup(name) : NULL;
2156 s->fd = fd;
2157 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2158 return 0;
2161 static int net_socket_connect_init(VLANState *vlan,
2162 const char *model,
2163 const char *name,
2164 const char *host_str)
2166 NetSocketState *s;
2167 int fd, connected, ret, err;
2168 struct sockaddr_in saddr;
2170 if (parse_host_port(&saddr, host_str) < 0)
2171 return -1;
2173 fd = socket(PF_INET, SOCK_STREAM, 0);
2174 if (fd < 0) {
2175 perror("socket");
2176 return -1;
2178 socket_set_nonblock(fd);
2180 connected = 0;
2181 for(;;) {
2182 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2183 if (ret < 0) {
2184 err = socket_error();
2185 if (err == EINTR || err == EWOULDBLOCK) {
2186 } else if (err == EINPROGRESS) {
2187 break;
2188 #ifdef _WIN32
2189 } else if (err == WSAEALREADY) {
2190 break;
2191 #endif
2192 } else {
2193 perror("connect");
2194 closesocket(fd);
2195 return -1;
2197 } else {
2198 connected = 1;
2199 break;
2202 s = net_socket_fd_init(vlan, model, name, fd, connected);
2203 if (!s)
2204 return -1;
2205 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2206 "socket: connect to %s:%d",
2207 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2208 return 0;
2211 static int net_socket_mcast_init(VLANState *vlan,
2212 const char *model,
2213 const char *name,
2214 const char *host_str)
2216 NetSocketState *s;
2217 int fd;
2218 struct sockaddr_in saddr;
2220 if (parse_host_port(&saddr, host_str) < 0)
2221 return -1;
2224 fd = net_socket_mcast_create(&saddr);
2225 if (fd < 0)
2226 return -1;
2228 s = net_socket_fd_init(vlan, model, name, fd, 0);
2229 if (!s)
2230 return -1;
2232 s->dgram_dst = saddr;
2234 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2235 "socket: mcast=%s:%d",
2236 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2237 return 0;
2241 typedef struct DumpState {
2242 VLANClientState *pcap_vc;
2243 int fd;
2244 int pcap_caplen;
2245 } DumpState;
2247 #define PCAP_MAGIC 0xa1b2c3d4
2249 struct pcap_file_hdr {
2250 uint32_t magic;
2251 uint16_t version_major;
2252 uint16_t version_minor;
2253 int32_t thiszone;
2254 uint32_t sigfigs;
2255 uint32_t snaplen;
2256 uint32_t linktype;
2259 struct pcap_sf_pkthdr {
2260 struct {
2261 int32_t tv_sec;
2262 int32_t tv_usec;
2263 } ts;
2264 uint32_t caplen;
2265 uint32_t len;
2268 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
2270 DumpState *s = vc->opaque;
2271 struct pcap_sf_pkthdr hdr;
2272 int64_t ts;
2273 int caplen;
2275 /* Early return in case of previous error. */
2276 if (s->fd < 0) {
2277 return size;
2280 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
2281 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2283 hdr.ts.tv_sec = ts / 1000000;
2284 hdr.ts.tv_usec = ts % 1000000;
2285 hdr.caplen = caplen;
2286 hdr.len = size;
2287 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2288 write(s->fd, buf, caplen) != caplen) {
2289 qemu_log("-net dump write error - stop dump\n");
2290 close(s->fd);
2291 s->fd = -1;
2294 return size;
2297 static void net_dump_cleanup(VLANClientState *vc)
2299 DumpState *s = vc->opaque;
2301 close(s->fd);
2302 qemu_free(s);
2305 static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
2306 const char *name, const char *filename, int len)
2308 struct pcap_file_hdr hdr;
2309 DumpState *s;
2311 s = qemu_malloc(sizeof(DumpState));
2313 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
2314 if (s->fd < 0) {
2315 config_error(mon, "-net dump: can't open %s\n", filename);
2316 return -1;
2319 s->pcap_caplen = len;
2321 hdr.magic = PCAP_MAGIC;
2322 hdr.version_major = 2;
2323 hdr.version_minor = 4;
2324 hdr.thiszone = 0;
2325 hdr.sigfigs = 0;
2326 hdr.snaplen = s->pcap_caplen;
2327 hdr.linktype = 1;
2329 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2330 config_error(mon, "-net dump write error: %s\n", strerror(errno));
2331 close(s->fd);
2332 qemu_free(s);
2333 return -1;
2336 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
2337 net_dump_cleanup, s);
2338 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2339 "dump to %s (len=%d)", filename, len);
2340 return 0;
2343 /* find or alloc a new VLAN */
2344 VLANState *qemu_find_vlan(int id, int allocate)
2346 VLANState **pvlan, *vlan;
2347 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2348 if (vlan->id == id)
2349 return vlan;
2351 if (!allocate) {
2352 return NULL;
2354 vlan = qemu_mallocz(sizeof(VLANState));
2355 vlan->id = id;
2356 TAILQ_INIT(&vlan->send_queue);
2357 vlan->next = NULL;
2358 pvlan = &first_vlan;
2359 while (*pvlan != NULL)
2360 pvlan = &(*pvlan)->next;
2361 *pvlan = vlan;
2362 return vlan;
2365 static int nic_get_free_idx(void)
2367 int index;
2369 for (index = 0; index < MAX_NICS; index++)
2370 if (!nd_table[index].used)
2371 return index;
2372 return -1;
2375 void qemu_check_nic_model(NICInfo *nd, const char *model)
2377 const char *models[2];
2379 models[0] = model;
2380 models[1] = NULL;
2382 qemu_check_nic_model_list(nd, models, model);
2385 void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2386 const char *default_model)
2388 int i, exit_status = 0;
2390 if (!nd->model)
2391 nd->model = strdup(default_model);
2393 if (strcmp(nd->model, "?") != 0) {
2394 for (i = 0 ; models[i]; i++)
2395 if (strcmp(nd->model, models[i]) == 0)
2396 return;
2398 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2399 exit_status = 1;
2402 fprintf(stderr, "qemu: Supported NIC models: ");
2403 for (i = 0 ; models[i]; i++)
2404 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2406 exit(exit_status);
2409 static int net_handle_fd_param(Monitor *mon, const char *param)
2411 if (!qemu_isdigit(param[0])) {
2412 int fd;
2414 fd = monitor_get_fd(mon, param);
2415 if (fd == -1) {
2416 config_error(mon, "No file descriptor named %s found", param);
2417 return -1;
2420 return fd;
2421 } else {
2422 return strtol(param, NULL, 0);
2426 int net_client_init(Monitor *mon, const char *device, const char *p)
2428 char buf[1024];
2429 int vlan_id, ret;
2430 VLANState *vlan;
2431 char *name = NULL;
2433 vlan_id = 0;
2434 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2435 vlan_id = strtol(buf, NULL, 0);
2437 vlan = qemu_find_vlan(vlan_id, 1);
2439 if (get_param_value(buf, sizeof(buf), "name", p)) {
2440 name = qemu_strdup(buf);
2442 if (!strcmp(device, "nic")) {
2443 static const char * const nic_params[] = {
2444 "vlan", "name", "macaddr", "model", "addr", "id", "vectors", NULL
2446 NICInfo *nd;
2447 uint8_t *macaddr;
2448 int idx = nic_get_free_idx();
2450 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
2451 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2452 ret = -1;
2453 goto out;
2455 if (idx == -1 || nb_nics >= MAX_NICS) {
2456 config_error(mon, "Too Many NICs\n");
2457 ret = -1;
2458 goto out;
2460 nd = &nd_table[idx];
2461 macaddr = nd->macaddr;
2462 macaddr[0] = 0x52;
2463 macaddr[1] = 0x54;
2464 macaddr[2] = 0x00;
2465 macaddr[3] = 0x12;
2466 macaddr[4] = 0x34;
2467 macaddr[5] = 0x56 + idx;
2469 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2470 if (parse_macaddr(macaddr, buf) < 0) {
2471 config_error(mon, "invalid syntax for ethernet address\n");
2472 ret = -1;
2473 goto out;
2476 if (get_param_value(buf, sizeof(buf), "model", p)) {
2477 nd->model = strdup(buf);
2479 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2480 nd->devaddr = strdup(buf);
2482 if (get_param_value(buf, sizeof(buf), "id", p)) {
2483 nd->id = strdup(buf);
2485 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2486 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2487 char *endptr;
2488 long vectors = strtol(buf, &endptr, 0);
2489 if (*endptr) {
2490 config_error(mon, "invalid syntax for # of vectors\n");
2491 ret = -1;
2492 goto out;
2494 if (vectors < 0 || vectors > 0x7ffffff) {
2495 config_error(mon, "invalid # of vectors\n");
2496 ret = -1;
2497 goto out;
2499 nd->nvectors = vectors;
2501 nd->vlan = vlan;
2502 nd->name = name;
2503 nd->used = 1;
2504 name = NULL;
2505 nb_nics++;
2506 vlan->nb_guest_devs++;
2507 ret = idx;
2508 } else
2509 if (!strcmp(device, "none")) {
2510 if (*p != '\0') {
2511 config_error(mon, "'none' takes no parameters\n");
2512 ret = -1;
2513 goto out;
2515 /* does nothing. It is needed to signal that no network cards
2516 are wanted */
2517 ret = 0;
2518 } else
2519 #ifdef CONFIG_SLIRP
2520 if (!strcmp(device, "user")) {
2521 static const char * const slirp_params[] = {
2522 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2523 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2524 "hostfwd", "guestfwd", NULL
2526 struct slirp_config_str *config;
2527 int restricted = 0;
2528 char *vnet = NULL;
2529 char *vhost = NULL;
2530 char *vhostname = NULL;
2531 char *tftp_export = NULL;
2532 char *bootfile = NULL;
2533 char *vdhcp_start = NULL;
2534 char *vnamesrv = NULL;
2535 char *smb_export = NULL;
2536 char *vsmbsrv = NULL;
2537 const char *q;
2539 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
2540 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2541 ret = -1;
2542 goto out;
2544 if (get_param_value(buf, sizeof(buf), "ip", p)) {
2545 int vnet_buflen = strlen(buf) + strlen("/24") + 1;
2546 /* emulate legacy parameter */
2547 vnet = qemu_malloc(vnet_buflen);
2548 pstrcpy(vnet, vnet_buflen, buf);
2549 pstrcat(vnet, vnet_buflen, "/24");
2551 if (get_param_value(buf, sizeof(buf), "net", p)) {
2552 vnet = qemu_strdup(buf);
2554 if (get_param_value(buf, sizeof(buf), "host", p)) {
2555 vhost = qemu_strdup(buf);
2557 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
2558 vhostname = qemu_strdup(buf);
2560 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
2561 restricted = (buf[0] == 'y') ? 1 : 0;
2563 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2564 vdhcp_start = qemu_strdup(buf);
2566 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2567 vnamesrv = qemu_strdup(buf);
2569 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2570 tftp_export = qemu_strdup(buf);
2572 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2573 bootfile = qemu_strdup(buf);
2575 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2576 smb_export = qemu_strdup(buf);
2577 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2578 vsmbsrv = qemu_strdup(buf);
2581 q = p;
2582 while (1) {
2583 config = qemu_malloc(sizeof(*config));
2584 if (!get_next_param_value(config->str, sizeof(config->str),
2585 "hostfwd", &q)) {
2586 break;
2588 config->flags = SLIRP_CFG_HOSTFWD;
2589 config->next = slirp_configs;
2590 slirp_configs = config;
2591 config = NULL;
2593 q = p;
2594 while (1) {
2595 config = qemu_malloc(sizeof(*config));
2596 if (!get_next_param_value(config->str, sizeof(config->str),
2597 "guestfwd", &q)) {
2598 break;
2600 config->flags = 0;
2601 config->next = slirp_configs;
2602 slirp_configs = config;
2603 config = NULL;
2605 qemu_free(config);
2606 vlan->nb_host_devs++;
2607 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2608 vhostname, tftp_export, bootfile, vdhcp_start,
2609 vnamesrv, smb_export, vsmbsrv);
2610 qemu_free(vnet);
2611 qemu_free(vhost);
2612 qemu_free(vhostname);
2613 qemu_free(tftp_export);
2614 qemu_free(bootfile);
2615 qemu_free(vdhcp_start);
2616 qemu_free(vnamesrv);
2617 qemu_free(smb_export);
2618 qemu_free(vsmbsrv);
2619 } else if (!strcmp(device, "channel")) {
2620 if (TAILQ_EMPTY(&slirp_stacks)) {
2621 struct slirp_config_str *config;
2623 config = qemu_malloc(sizeof(*config));
2624 pstrcpy(config->str, sizeof(config->str), p);
2625 config->flags = SLIRP_CFG_LEGACY;
2626 config->next = slirp_configs;
2627 slirp_configs = config;
2628 } else {
2629 slirp_guestfwd(TAILQ_FIRST(&slirp_stacks), mon, p, 1);
2631 ret = 0;
2632 } else
2633 #endif
2634 #ifdef _WIN32
2635 if (!strcmp(device, "tap")) {
2636 static const char * const tap_params[] = {
2637 "vlan", "name", "ifname", NULL
2639 char ifname[64];
2641 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
2642 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2643 ret = -1;
2644 goto out;
2646 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2647 config_error(mon, "tap: no interface name\n");
2648 ret = -1;
2649 goto out;
2651 vlan->nb_host_devs++;
2652 ret = tap_win32_init(vlan, device, name, ifname);
2653 } else
2654 #elif defined (_AIX)
2655 #else
2656 if (!strcmp(device, "tap")) {
2657 char ifname[64], chkbuf[64];
2658 char setup_script[1024], down_script[1024];
2659 TAPState *s;
2660 int fd;
2661 vlan->nb_host_devs++;
2662 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2663 static const char * const fd_params[] = {
2664 "vlan", "name", "fd", "sndbuf", NULL
2666 ret = -1;
2667 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2668 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2669 goto out;
2671 fd = net_handle_fd_param(mon, buf);
2672 if (fd == -1) {
2673 goto out;
2675 fcntl(fd, F_SETFL, O_NONBLOCK);
2676 s = net_tap_fd_init(vlan, device, name, fd);
2677 if (!s) {
2678 close(fd);
2680 } else {
2681 static const char * const tap_params[] = {
2682 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
2684 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
2685 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2686 ret = -1;
2687 goto out;
2689 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2690 ifname[0] = '\0';
2692 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2693 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2695 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2696 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2698 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2700 if (s != NULL) {
2701 const char *sndbuf_str = NULL;
2702 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
2703 sndbuf_str = buf;
2705 tap_set_sndbuf(s, sndbuf_str, mon);
2706 ret = 0;
2707 } else {
2708 ret = -1;
2710 } else
2711 #endif
2712 if (!strcmp(device, "socket")) {
2713 char chkbuf[64];
2714 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2715 static const char * const fd_params[] = {
2716 "vlan", "name", "fd", NULL
2718 int fd;
2719 ret = -1;
2720 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2721 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2722 goto out;
2724 fd = net_handle_fd_param(mon, buf);
2725 if (fd == -1) {
2726 goto out;
2728 if (!net_socket_fd_init(vlan, device, name, fd, 1)) {
2729 close(fd);
2730 goto out;
2732 ret = 0;
2733 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
2734 static const char * const listen_params[] = {
2735 "vlan", "name", "listen", NULL
2737 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
2738 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2739 ret = -1;
2740 goto out;
2742 ret = net_socket_listen_init(vlan, device, name, buf);
2743 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
2744 static const char * const connect_params[] = {
2745 "vlan", "name", "connect", NULL
2747 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
2748 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2749 ret = -1;
2750 goto out;
2752 ret = net_socket_connect_init(vlan, device, name, buf);
2753 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
2754 static const char * const mcast_params[] = {
2755 "vlan", "name", "mcast", NULL
2757 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
2758 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2759 ret = -1;
2760 goto out;
2762 ret = net_socket_mcast_init(vlan, device, name, buf);
2763 } else {
2764 config_error(mon, "Unknown socket options: %s\n", p);
2765 ret = -1;
2766 goto out;
2768 vlan->nb_host_devs++;
2769 } else
2770 #ifdef CONFIG_VDE
2771 if (!strcmp(device, "vde")) {
2772 static const char * const vde_params[] = {
2773 "vlan", "name", "sock", "port", "group", "mode", NULL
2775 char vde_sock[1024], vde_group[512];
2776 int vde_port, vde_mode;
2778 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
2779 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2780 ret = -1;
2781 goto out;
2783 vlan->nb_host_devs++;
2784 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2785 vde_sock[0] = '\0';
2787 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2788 vde_port = strtol(buf, NULL, 10);
2789 } else {
2790 vde_port = 0;
2792 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2793 vde_group[0] = '\0';
2795 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2796 vde_mode = strtol(buf, NULL, 8);
2797 } else {
2798 vde_mode = 0700;
2800 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
2801 } else
2802 #endif
2803 if (!strcmp(device, "dump")) {
2804 int len = 65536;
2806 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2807 len = strtol(buf, NULL, 0);
2809 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2810 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2812 ret = net_dump_init(mon, vlan, device, name, buf, len);
2813 } else {
2814 config_error(mon, "Unknown network device: %s\n", device);
2815 ret = -1;
2816 goto out;
2818 if (ret < 0) {
2819 config_error(mon, "Could not initialize device '%s'\n", device);
2821 out:
2822 qemu_free(name);
2823 return ret;
2826 void net_client_uninit(NICInfo *nd)
2828 nd->vlan->nb_guest_devs--;
2829 nb_nics--;
2830 nd->used = 0;
2831 free((void *)nd->model);
2834 static int net_host_check_device(const char *device)
2836 int i;
2837 const char *valid_param_list[] = { "tap", "socket", "dump"
2838 #ifdef CONFIG_SLIRP
2839 ,"user"
2840 #endif
2841 #ifdef CONFIG_VDE
2842 ,"vde"
2843 #endif
2845 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2846 if (!strncmp(valid_param_list[i], device,
2847 strlen(valid_param_list[i])))
2848 return 1;
2851 return 0;
2854 void net_host_device_add(Monitor *mon, const char *device, const char *opts)
2856 if (!net_host_check_device(device)) {
2857 monitor_printf(mon, "invalid host network device %s\n", device);
2858 return;
2860 if (net_client_init(mon, device, opts ? opts : "") < 0) {
2861 monitor_printf(mon, "adding host network device %s failed\n", device);
2865 void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
2867 VLANClientState *vc;
2869 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
2870 if (!vc) {
2871 return;
2873 if (!net_host_check_device(vc->model)) {
2874 monitor_printf(mon, "invalid host network device %s\n", device);
2875 return;
2877 qemu_del_vlan_client(vc);
2880 int net_client_parse(const char *str)
2882 const char *p;
2883 char *q;
2884 char device[64];
2886 p = str;
2887 q = device;
2888 while (*p != '\0' && *p != ',') {
2889 if ((q - device) < sizeof(device) - 1)
2890 *q++ = *p;
2891 p++;
2893 *q = '\0';
2894 if (*p == ',')
2895 p++;
2897 return net_client_init(NULL, device, p);
2900 void net_set_boot_mask(int net_boot_mask)
2902 int i;
2904 /* Only the first four NICs may be bootable */
2905 net_boot_mask = net_boot_mask & 0xF;
2907 for (i = 0; i < nb_nics; i++) {
2908 if (net_boot_mask & (1 << i)) {
2909 nd_table[i].bootable = 1;
2910 net_boot_mask &= ~(1 << i);
2914 if (net_boot_mask) {
2915 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2916 exit(1);
2920 void do_info_network(Monitor *mon)
2922 VLANState *vlan;
2923 VLANClientState *vc;
2925 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2926 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
2927 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
2928 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
2932 void do_set_link(Monitor *mon, const char *name, const char *up_or_down)
2934 VLANState *vlan;
2935 VLANClientState *vc = NULL;
2937 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2938 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2939 if (strcmp(vc->name, name) == 0)
2940 goto done;
2941 done:
2943 if (!vc) {
2944 monitor_printf(mon, "could not find network device '%s'\n", name);
2945 return;
2948 if (strcmp(up_or_down, "up") == 0)
2949 vc->link_down = 0;
2950 else if (strcmp(up_or_down, "down") == 0)
2951 vc->link_down = 1;
2952 else
2953 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2954 "valid\n", up_or_down);
2956 if (vc->link_status_changed)
2957 vc->link_status_changed(vc);
2960 void net_cleanup(void)
2962 VLANState *vlan;
2964 /* close network clients */
2965 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2966 VLANClientState *vc = vlan->first_client;
2968 while (vc) {
2969 VLANClientState *next = vc->next;
2971 qemu_del_vlan_client(vc);
2973 vc = next;
2978 void net_client_check(void)
2980 VLANState *vlan;
2982 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2983 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2984 continue;
2985 if (vlan->nb_guest_devs == 0)
2986 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2987 if (vlan->nb_host_devs == 0)
2988 fprintf(stderr,
2989 "Warning: vlan %d is not connected to host network\n",
2990 vlan->id);