qdev/isa: convert cs4231a sound card
[qemu.git] / net.c
blob340177e3d7ff8edfb181c29ef581786f6ecd1e2d
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 CONFIG_BSD etc. */
33 #include "config-host.h"
34 /* Needed early to override system queue definitions on BSD */
35 #include "sys-queue.h"
37 #ifndef _WIN32
38 #include <sys/times.h>
39 #include <sys/wait.h>
40 #include <termios.h>
41 #include <sys/mman.h>
42 #include <sys/ioctl.h>
43 #include <sys/resource.h>
44 #include <sys/socket.h>
45 #include <netinet/in.h>
46 #include <net/if.h>
47 #ifdef __NetBSD__
48 #include <net/if_tap.h>
49 #endif
50 #ifdef __linux__
51 #include <linux/if_tun.h>
52 #endif
53 #include <arpa/inet.h>
54 #include <dirent.h>
55 #include <netdb.h>
56 #include <sys/select.h>
57 #ifdef CONFIG_BSD
58 #include <sys/stat.h>
59 #if defined(__FreeBSD__) || defined(__DragonFly__)
60 #include <libutil.h>
61 #else
62 #include <util.h>
63 #endif
64 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
65 #include <freebsd/stdlib.h>
66 #else
67 #ifdef __linux__
68 #include <pty.h>
69 #include <malloc.h>
70 #include <linux/rtc.h>
72 /* For the benefit of older linux systems which don't supply it,
73 we use a local copy of hpet.h. */
74 /* #include <linux/hpet.h> */
75 #include "hpet.h"
77 #include <linux/ppdev.h>
78 #include <linux/parport.h>
79 #endif
80 #ifdef __sun__
81 #include <sys/stat.h>
82 #include <sys/ethernet.h>
83 #include <sys/sockio.h>
84 #include <netinet/arp.h>
85 #include <netinet/in.h>
86 #include <netinet/in_systm.h>
87 #include <netinet/ip.h>
88 #include <netinet/ip_icmp.h> // must come after ip.h
89 #include <netinet/udp.h>
90 #include <netinet/tcp.h>
91 #include <net/if.h>
92 #include <syslog.h>
93 #include <stropts.h>
94 #endif
95 #endif
96 #endif
98 #if defined(__OpenBSD__)
99 #include <util.h>
100 #endif
102 #if defined(CONFIG_VDE)
103 #include <libvdeplug.h>
104 #endif
106 #include "qemu-common.h"
107 #include "net.h"
108 #include "monitor.h"
109 #include "sysemu.h"
110 #include "qemu-timer.h"
111 #include "qemu-char.h"
112 #include "audio/audio.h"
113 #include "qemu_socket.h"
114 #include "qemu-log.h"
116 #include "slirp/libslirp.h"
119 static VLANState *first_vlan;
121 /***********************************************************/
122 /* network device redirectors */
124 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
125 static void hex_dump(FILE *f, const uint8_t *buf, int size)
127 int len, i, j, c;
129 for(i=0;i<size;i+=16) {
130 len = size - i;
131 if (len > 16)
132 len = 16;
133 fprintf(f, "%08x ", i);
134 for(j=0;j<16;j++) {
135 if (j < len)
136 fprintf(f, " %02x", buf[i+j]);
137 else
138 fprintf(f, " ");
140 fprintf(f, " ");
141 for(j=0;j<len;j++) {
142 c = buf[i+j];
143 if (c < ' ' || c > '~')
144 c = '.';
145 fprintf(f, "%c", c);
147 fprintf(f, "\n");
150 #endif
152 static int parse_macaddr(uint8_t *macaddr, const char *p)
154 int i;
155 char *last_char;
156 long int offset;
158 errno = 0;
159 offset = strtol(p, &last_char, 0);
160 if (0 == errno && '\0' == *last_char &&
161 offset >= 0 && offset <= 0xFFFFFF) {
162 macaddr[3] = (offset & 0xFF0000) >> 16;
163 macaddr[4] = (offset & 0xFF00) >> 8;
164 macaddr[5] = offset & 0xFF;
165 return 0;
166 } else {
167 for(i = 0; i < 6; i++) {
168 macaddr[i] = strtol(p, (char **)&p, 16);
169 if (i == 5) {
170 if (*p != '\0')
171 return -1;
172 } else {
173 if (*p != ':' && *p != '-')
174 return -1;
175 p++;
178 return 0;
181 return -1;
184 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
186 const char *p, *p1;
187 int len;
188 p = *pp;
189 p1 = strchr(p, sep);
190 if (!p1)
191 return -1;
192 len = p1 - p;
193 p1++;
194 if (buf_size > 0) {
195 if (len > buf_size - 1)
196 len = buf_size - 1;
197 memcpy(buf, p, len);
198 buf[len] = '\0';
200 *pp = p1;
201 return 0;
204 int parse_host_src_port(struct sockaddr_in *haddr,
205 struct sockaddr_in *saddr,
206 const char *input_str)
208 char *str = strdup(input_str);
209 char *host_str = str;
210 char *src_str;
211 const char *src_str2;
212 char *ptr;
215 * Chop off any extra arguments at the end of the string which
216 * would start with a comma, then fill in the src port information
217 * if it was provided else use the "any address" and "any port".
219 if ((ptr = strchr(str,',')))
220 *ptr = '\0';
222 if ((src_str = strchr(input_str,'@'))) {
223 *src_str = '\0';
224 src_str++;
227 if (parse_host_port(haddr, host_str) < 0)
228 goto fail;
230 src_str2 = src_str;
231 if (!src_str || *src_str == '\0')
232 src_str2 = ":0";
234 if (parse_host_port(saddr, src_str2) < 0)
235 goto fail;
237 free(str);
238 return(0);
240 fail:
241 free(str);
242 return -1;
245 int parse_host_port(struct sockaddr_in *saddr, const char *str)
247 char buf[512];
248 struct hostent *he;
249 const char *p, *r;
250 int port;
252 p = str;
253 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
254 return -1;
255 saddr->sin_family = AF_INET;
256 if (buf[0] == '\0') {
257 saddr->sin_addr.s_addr = 0;
258 } else {
259 if (qemu_isdigit(buf[0])) {
260 if (!inet_aton(buf, &saddr->sin_addr))
261 return -1;
262 } else {
263 if ((he = gethostbyname(buf)) == NULL)
264 return - 1;
265 saddr->sin_addr = *(struct in_addr *)he->h_addr;
268 port = strtol(p, (char **)&r, 0);
269 if (r == p)
270 return -1;
271 saddr->sin_port = htons(port);
272 return 0;
275 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
277 snprintf(vc->info_str, sizeof(vc->info_str),
278 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
279 vc->model,
280 macaddr[0], macaddr[1], macaddr[2],
281 macaddr[3], macaddr[4], macaddr[5]);
284 static char *assign_name(VLANClientState *vc1, const char *model)
286 VLANState *vlan;
287 char buf[256];
288 int id = 0;
290 for (vlan = first_vlan; vlan; vlan = vlan->next) {
291 VLANClientState *vc;
293 for (vc = vlan->first_client; vc; vc = vc->next)
294 if (vc != vc1 && strcmp(vc->model, model) == 0)
295 id++;
298 snprintf(buf, sizeof(buf), "%s.%d", model, id);
300 return strdup(buf);
303 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
304 const char *model,
305 const char *name,
306 NetCanReceive *can_receive,
307 NetReceive *receive,
308 NetReceiveIOV *receive_iov,
309 NetCleanup *cleanup,
310 void *opaque)
312 VLANClientState *vc, **pvc;
313 vc = qemu_mallocz(sizeof(VLANClientState));
314 vc->model = strdup(model);
315 if (name)
316 vc->name = strdup(name);
317 else
318 vc->name = assign_name(vc, model);
319 vc->can_receive = can_receive;
320 vc->receive = receive;
321 vc->receive_iov = receive_iov;
322 vc->cleanup = cleanup;
323 vc->opaque = opaque;
324 vc->vlan = vlan;
326 vc->next = NULL;
327 pvc = &vlan->first_client;
328 while (*pvc != NULL)
329 pvc = &(*pvc)->next;
330 *pvc = vc;
331 return vc;
334 void qemu_del_vlan_client(VLANClientState *vc)
336 VLANClientState **pvc = &vc->vlan->first_client;
338 while (*pvc != NULL)
339 if (*pvc == vc) {
340 *pvc = vc->next;
341 if (vc->cleanup) {
342 vc->cleanup(vc);
344 free(vc->name);
345 free(vc->model);
346 qemu_free(vc);
347 break;
348 } else
349 pvc = &(*pvc)->next;
352 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
354 VLANClientState **pvc = &vlan->first_client;
356 while (*pvc != NULL)
357 if ((*pvc)->opaque == opaque)
358 return *pvc;
359 else
360 pvc = &(*pvc)->next;
362 return NULL;
365 static VLANClientState *
366 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
367 const char *client_str)
369 VLANState *vlan;
370 VLANClientState *vc;
372 vlan = qemu_find_vlan(vlan_id, 0);
373 if (!vlan) {
374 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
375 return NULL;
378 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
379 if (!strcmp(vc->name, client_str)) {
380 break;
383 if (!vc) {
384 monitor_printf(mon, "can't find device %s on VLAN %d\n",
385 client_str, vlan_id);
388 return vc;
391 int qemu_can_send_packet(VLANClientState *sender)
393 VLANState *vlan = sender->vlan;
394 VLANClientState *vc;
396 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
397 if (vc == sender) {
398 continue;
401 /* no can_receive() handler, they can always receive */
402 if (!vc->can_receive || vc->can_receive(vc)) {
403 return 1;
406 return 0;
409 static int
410 qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
412 VLANClientState *vc;
413 int ret = -1;
415 sender->vlan->delivering = 1;
417 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
418 ssize_t len;
420 if (vc == sender) {
421 continue;
424 if (vc->link_down) {
425 ret = size;
426 continue;
429 len = vc->receive(vc, buf, size);
431 ret = (ret >= 0) ? ret : len;
434 sender->vlan->delivering = 0;
436 return ret;
439 void qemu_purge_queued_packets(VLANClientState *vc)
441 VLANPacket *packet, *next;
443 TAILQ_FOREACH_SAFE(packet, &vc->vlan->send_queue, entry, next) {
444 if (packet->sender == vc) {
445 TAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
446 qemu_free(packet);
451 void qemu_flush_queued_packets(VLANClientState *vc)
453 while (!TAILQ_EMPTY(&vc->vlan->send_queue)) {
454 VLANPacket *packet;
455 int ret;
457 packet = TAILQ_FIRST(&vc->vlan->send_queue);
458 TAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
460 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
461 if (ret == 0 && packet->sent_cb != NULL) {
462 TAILQ_INSERT_HEAD(&vc->vlan->send_queue, packet, entry);
463 break;
466 if (packet->sent_cb)
467 packet->sent_cb(packet->sender, ret);
469 qemu_free(packet);
473 static void qemu_enqueue_packet(VLANClientState *sender,
474 const uint8_t *buf, int size,
475 NetPacketSent *sent_cb)
477 VLANPacket *packet;
479 packet = qemu_malloc(sizeof(VLANPacket) + size);
480 packet->sender = sender;
481 packet->size = size;
482 packet->sent_cb = sent_cb;
483 memcpy(packet->data, buf, size);
485 TAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
488 ssize_t qemu_send_packet_async(VLANClientState *sender,
489 const uint8_t *buf, int size,
490 NetPacketSent *sent_cb)
492 int ret;
494 if (sender->link_down) {
495 return size;
498 #ifdef DEBUG_NET
499 printf("vlan %d send:\n", sender->vlan->id);
500 hex_dump(stdout, buf, size);
501 #endif
503 if (sender->vlan->delivering) {
504 qemu_enqueue_packet(sender, buf, size, NULL);
505 return size;
508 ret = qemu_deliver_packet(sender, buf, size);
509 if (ret == 0 && sent_cb != NULL) {
510 qemu_enqueue_packet(sender, buf, size, sent_cb);
511 return 0;
514 qemu_flush_queued_packets(sender);
516 return ret;
519 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
521 qemu_send_packet_async(vc, buf, size, NULL);
524 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
525 int iovcnt)
527 uint8_t buffer[4096];
528 size_t offset = 0;
529 int i;
531 for (i = 0; i < iovcnt; i++) {
532 size_t len;
534 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
535 memcpy(buffer + offset, iov[i].iov_base, len);
536 offset += len;
539 return vc->receive(vc, buffer, offset);
542 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
544 size_t offset = 0;
545 int i;
547 for (i = 0; i < iovcnt; i++)
548 offset += iov[i].iov_len;
549 return offset;
552 static int qemu_deliver_packet_iov(VLANClientState *sender,
553 const struct iovec *iov, int iovcnt)
555 VLANClientState *vc;
556 int ret = -1;
558 sender->vlan->delivering = 1;
560 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
561 ssize_t len;
563 if (vc == sender) {
564 continue;
567 if (vc->link_down) {
568 ret = calc_iov_length(iov, iovcnt);
569 continue;
572 if (vc->receive_iov) {
573 len = vc->receive_iov(vc, iov, iovcnt);
574 } else {
575 len = vc_sendv_compat(vc, iov, iovcnt);
578 ret = (ret >= 0) ? ret : len;
581 sender->vlan->delivering = 0;
583 return ret;
586 static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
587 const struct iovec *iov, int iovcnt,
588 NetPacketSent *sent_cb)
590 VLANPacket *packet;
591 size_t max_len = 0;
592 int i;
594 max_len = calc_iov_length(iov, iovcnt);
596 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
597 packet->sender = sender;
598 packet->sent_cb = sent_cb;
599 packet->size = 0;
601 for (i = 0; i < iovcnt; i++) {
602 size_t len = iov[i].iov_len;
604 memcpy(packet->data + packet->size, iov[i].iov_base, len);
605 packet->size += len;
608 TAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
610 return packet->size;
613 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
614 const struct iovec *iov, int iovcnt,
615 NetPacketSent *sent_cb)
617 int ret;
619 if (sender->link_down) {
620 return calc_iov_length(iov, iovcnt);
623 if (sender->vlan->delivering) {
624 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
627 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
628 if (ret == 0 && sent_cb != NULL) {
629 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
630 return 0;
633 qemu_flush_queued_packets(sender);
635 return ret;
638 ssize_t
639 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
641 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
644 static void config_error(Monitor *mon, const char *fmt, ...)
646 va_list ap;
648 va_start(ap, fmt);
649 if (mon) {
650 monitor_vprintf(mon, fmt, ap);
651 } else {
652 fprintf(stderr, "qemu: ");
653 vfprintf(stderr, fmt, ap);
654 exit(1);
656 va_end(ap);
659 #if defined(CONFIG_SLIRP)
661 /* slirp network adapter */
663 #define SLIRP_CFG_HOSTFWD 1
664 #define SLIRP_CFG_LEGACY 2
666 struct slirp_config_str {
667 struct slirp_config_str *next;
668 int flags;
669 char str[1024];
670 int legacy_format;
673 typedef struct SlirpState {
674 TAILQ_ENTRY(SlirpState) entry;
675 VLANClientState *vc;
676 Slirp *slirp;
677 #ifndef _WIN32
678 char smb_dir[128];
679 #endif
680 } SlirpState;
682 static struct slirp_config_str *slirp_configs;
683 const char *legacy_tftp_prefix;
684 const char *legacy_bootp_filename;
685 static TAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
686 TAILQ_HEAD_INITIALIZER(slirp_stacks);
688 static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
689 int legacy_format);
690 static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
691 int legacy_format);
693 #ifndef _WIN32
694 static const char *legacy_smb_export;
696 static void slirp_smb(SlirpState *s, Monitor *mon, const char *exported_dir,
697 struct in_addr vserver_addr);
698 static void slirp_smb_cleanup(SlirpState *s);
699 #else
700 static inline void slirp_smb_cleanup(SlirpState *s) { }
701 #endif
703 int slirp_can_output(void *opaque)
705 SlirpState *s = opaque;
707 return qemu_can_send_packet(s->vc);
710 void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
712 SlirpState *s = opaque;
714 #ifdef DEBUG_SLIRP
715 printf("slirp output:\n");
716 hex_dump(stdout, pkt, pkt_len);
717 #endif
718 qemu_send_packet(s->vc, pkt, pkt_len);
721 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
723 SlirpState *s = vc->opaque;
725 #ifdef DEBUG_SLIRP
726 printf("slirp input:\n");
727 hex_dump(stdout, buf, size);
728 #endif
729 slirp_input(s->slirp, buf, size);
730 return size;
733 static void net_slirp_cleanup(VLANClientState *vc)
735 SlirpState *s = vc->opaque;
737 slirp_cleanup(s->slirp);
738 slirp_smb_cleanup(s);
739 TAILQ_REMOVE(&slirp_stacks, s, entry);
740 qemu_free(s);
743 static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
744 const char *name, int restricted,
745 const char *vnetwork, const char *vhost,
746 const char *vhostname, const char *tftp_export,
747 const char *bootfile, const char *vdhcp_start,
748 const char *vnameserver, const char *smb_export,
749 const char *vsmbserver)
751 /* default settings according to historic slirp */
752 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
753 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
754 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
755 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
756 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
757 #ifndef _WIN32
758 struct in_addr smbsrv = { .s_addr = 0 };
759 #endif
760 SlirpState *s;
761 char buf[20];
762 uint32_t addr;
763 int shift;
764 char *end;
766 if (!tftp_export) {
767 tftp_export = legacy_tftp_prefix;
769 if (!bootfile) {
770 bootfile = legacy_bootp_filename;
773 if (vnetwork) {
774 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
775 if (!inet_aton(vnetwork, &net)) {
776 return -1;
778 addr = ntohl(net.s_addr);
779 if (!(addr & 0x80000000)) {
780 mask.s_addr = htonl(0xff000000); /* class A */
781 } else if ((addr & 0xfff00000) == 0xac100000) {
782 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
783 } else if ((addr & 0xc0000000) == 0x80000000) {
784 mask.s_addr = htonl(0xffff0000); /* class B */
785 } else if ((addr & 0xffff0000) == 0xc0a80000) {
786 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
787 } else if ((addr & 0xffff0000) == 0xc6120000) {
788 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
789 } else if ((addr & 0xe0000000) == 0xe0000000) {
790 mask.s_addr = htonl(0xffffff00); /* class C */
791 } else {
792 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
794 } else {
795 if (!inet_aton(buf, &net)) {
796 return -1;
798 shift = strtol(vnetwork, &end, 10);
799 if (*end != '\0') {
800 if (!inet_aton(vnetwork, &mask)) {
801 return -1;
803 } else if (shift < 4 || shift > 32) {
804 return -1;
805 } else {
806 mask.s_addr = htonl(0xffffffff << (32 - shift));
809 net.s_addr &= mask.s_addr;
810 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
811 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
812 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
815 if (vhost && !inet_aton(vhost, &host)) {
816 return -1;
818 if ((host.s_addr & mask.s_addr) != net.s_addr) {
819 return -1;
822 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
823 return -1;
825 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
826 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
827 return -1;
830 if (vnameserver && !inet_aton(vnameserver, &dns)) {
831 return -1;
833 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
834 dns.s_addr == host.s_addr) {
835 return -1;
838 #ifndef _WIN32
839 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
840 return -1;
842 #endif
844 s = qemu_mallocz(sizeof(SlirpState));
845 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
846 tftp_export, bootfile, dhcp, dns, s);
847 TAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
849 while (slirp_configs) {
850 struct slirp_config_str *config = slirp_configs;
852 if (config->flags & SLIRP_CFG_HOSTFWD) {
853 slirp_hostfwd(s, mon, config->str,
854 config->flags & SLIRP_CFG_LEGACY);
855 } else {
856 slirp_guestfwd(s, mon, config->str,
857 config->flags & SLIRP_CFG_LEGACY);
859 slirp_configs = config->next;
860 qemu_free(config);
862 #ifndef _WIN32
863 if (!smb_export) {
864 smb_export = legacy_smb_export;
866 if (smb_export) {
867 slirp_smb(s, mon, smb_export, smbsrv);
869 #endif
871 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
872 net_slirp_cleanup, s);
873 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
874 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
875 return 0;
878 static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
879 const char *stack)
881 VLANClientState *vc;
883 if (vlan) {
884 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
885 if (!vc) {
886 return NULL;
888 if (strcmp(vc->model, "user")) {
889 monitor_printf(mon, "invalid device specified\n");
890 return NULL;
892 return vc->opaque;
893 } else {
894 if (TAILQ_EMPTY(&slirp_stacks)) {
895 monitor_printf(mon, "user mode network stack not in use\n");
896 return NULL;
898 return TAILQ_FIRST(&slirp_stacks);
902 void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
904 struct in_addr host_addr = { .s_addr = INADDR_ANY };
905 int host_port;
906 char buf[256] = "";
907 const char *src_str, *p;
908 SlirpState *s;
909 int is_udp = 0;
910 int err;
911 const char *arg1 = qdict_get_str(qdict, "arg1");
912 const char *arg2 = qdict_get_try_str(qdict, "arg2");
913 const char *arg3 = qdict_get_try_str(qdict, "arg3");
915 if (arg2) {
916 s = slirp_lookup(mon, arg1, arg2);
917 src_str = arg3;
918 } else {
919 s = slirp_lookup(mon, NULL, NULL);
920 src_str = arg1;
922 if (!s) {
923 return;
926 if (!src_str || !src_str[0])
927 goto fail_syntax;
929 p = src_str;
930 get_str_sep(buf, sizeof(buf), &p, ':');
932 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
933 is_udp = 0;
934 } else if (!strcmp(buf, "udp")) {
935 is_udp = 1;
936 } else {
937 goto fail_syntax;
940 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
941 goto fail_syntax;
943 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
944 goto fail_syntax;
947 host_port = atoi(p);
949 err = slirp_remove_hostfwd(TAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
950 host_addr, host_port);
952 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
953 err ? "removed" : "not found");
954 return;
956 fail_syntax:
957 monitor_printf(mon, "invalid format\n");
960 static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
961 int legacy_format)
963 struct in_addr host_addr = { .s_addr = INADDR_ANY };
964 struct in_addr guest_addr = { .s_addr = 0 };
965 int host_port, guest_port;
966 const char *p;
967 char buf[256];
968 int is_udp;
969 char *end;
971 p = redir_str;
972 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
973 goto fail_syntax;
975 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
976 is_udp = 0;
977 } else if (!strcmp(buf, "udp")) {
978 is_udp = 1;
979 } else {
980 goto fail_syntax;
983 if (!legacy_format) {
984 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
985 goto fail_syntax;
987 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
988 goto fail_syntax;
992 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
993 goto fail_syntax;
995 host_port = strtol(buf, &end, 0);
996 if (*end != '\0' || host_port < 1 || host_port > 65535) {
997 goto fail_syntax;
1000 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1001 goto fail_syntax;
1003 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
1004 goto fail_syntax;
1007 guest_port = strtol(p, &end, 0);
1008 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
1009 goto fail_syntax;
1012 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1013 guest_port) < 0) {
1014 config_error(mon, "could not set up host forwarding rule '%s'\n",
1015 redir_str);
1017 return;
1019 fail_syntax:
1020 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
1023 void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
1025 const char *redir_str;
1026 SlirpState *s;
1027 const char *arg1 = qdict_get_str(qdict, "arg1");
1028 const char *arg2 = qdict_get_try_str(qdict, "arg2");
1029 const char *arg3 = qdict_get_try_str(qdict, "arg3");
1031 if (arg2) {
1032 s = slirp_lookup(mon, arg1, arg2);
1033 redir_str = arg3;
1034 } else {
1035 s = slirp_lookup(mon, NULL, NULL);
1036 redir_str = arg1;
1038 if (s) {
1039 slirp_hostfwd(s, mon, redir_str, 0);
1044 void net_slirp_redir(const char *redir_str)
1046 struct slirp_config_str *config;
1048 if (TAILQ_EMPTY(&slirp_stacks)) {
1049 config = qemu_malloc(sizeof(*config));
1050 pstrcpy(config->str, sizeof(config->str), redir_str);
1051 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
1052 config->next = slirp_configs;
1053 slirp_configs = config;
1054 return;
1057 slirp_hostfwd(TAILQ_FIRST(&slirp_stacks), NULL, redir_str, 1);
1060 #ifndef _WIN32
1062 /* automatic user mode samba server configuration */
1063 static void slirp_smb_cleanup(SlirpState *s)
1065 char cmd[128];
1067 if (s->smb_dir[0] != '\0') {
1068 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1069 system(cmd);
1070 s->smb_dir[0] = '\0';
1074 static void slirp_smb(SlirpState* s, Monitor *mon, const char *exported_dir,
1075 struct in_addr vserver_addr)
1077 static int instance;
1078 char smb_conf[128];
1079 char smb_cmdline[128];
1080 FILE *f;
1082 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1083 (long)getpid(), instance++);
1084 if (mkdir(s->smb_dir, 0700) < 0) {
1085 config_error(mon, "could not create samba server dir '%s'\n",
1086 s->smb_dir);
1087 return;
1089 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
1091 f = fopen(smb_conf, "w");
1092 if (!f) {
1093 slirp_smb_cleanup(s);
1094 config_error(mon, "could not create samba server "
1095 "configuration file '%s'\n", smb_conf);
1096 return;
1098 fprintf(f,
1099 "[global]\n"
1100 "private dir=%s\n"
1101 "smb ports=0\n"
1102 "socket address=127.0.0.1\n"
1103 "pid directory=%s\n"
1104 "lock directory=%s\n"
1105 "log file=%s/log.smbd\n"
1106 "smb passwd file=%s/smbpasswd\n"
1107 "security = share\n"
1108 "[qemu]\n"
1109 "path=%s\n"
1110 "read only=no\n"
1111 "guest ok=yes\n",
1112 s->smb_dir,
1113 s->smb_dir,
1114 s->smb_dir,
1115 s->smb_dir,
1116 s->smb_dir,
1117 exported_dir
1119 fclose(f);
1121 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1122 SMBD_COMMAND, smb_conf);
1124 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
1125 slirp_smb_cleanup(s);
1126 config_error(mon, "conflicting/invalid smbserver address\n");
1130 /* automatic user mode samba server configuration (legacy interface) */
1131 void net_slirp_smb(const char *exported_dir)
1133 struct in_addr vserver_addr = { .s_addr = 0 };
1135 if (legacy_smb_export) {
1136 fprintf(stderr, "-smb given twice\n");
1137 exit(1);
1139 legacy_smb_export = exported_dir;
1140 if (!TAILQ_EMPTY(&slirp_stacks)) {
1141 slirp_smb(TAILQ_FIRST(&slirp_stacks), NULL, exported_dir,
1142 vserver_addr);
1146 #endif /* !defined(_WIN32) */
1148 struct GuestFwd {
1149 CharDriverState *hd;
1150 struct in_addr server;
1151 int port;
1152 Slirp *slirp;
1155 static int guestfwd_can_read(void *opaque)
1157 struct GuestFwd *fwd = opaque;
1158 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
1161 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1163 struct GuestFwd *fwd = opaque;
1164 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
1167 static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
1168 int legacy_format)
1170 struct in_addr server = { .s_addr = 0 };
1171 struct GuestFwd *fwd;
1172 const char *p;
1173 char buf[128];
1174 char *end;
1175 int port;
1177 p = config_str;
1178 if (legacy_format) {
1179 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1180 goto fail_syntax;
1182 } else {
1183 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1184 goto fail_syntax;
1186 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1187 goto fail_syntax;
1189 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1190 goto fail_syntax;
1192 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1193 goto fail_syntax;
1195 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1196 goto fail_syntax;
1199 port = strtol(buf, &end, 10);
1200 if (*end != '\0' || port < 1 || port > 65535) {
1201 goto fail_syntax;
1204 fwd = qemu_malloc(sizeof(struct GuestFwd));
1205 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1206 fwd->hd = qemu_chr_open(buf, p, NULL);
1207 if (!fwd->hd) {
1208 config_error(mon, "could not open guest forwarding device '%s'\n",
1209 buf);
1210 qemu_free(fwd);
1211 return;
1214 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
1215 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1216 "rule '%s'\n", config_str);
1217 qemu_free(fwd);
1218 return;
1220 fwd->server = server;
1221 fwd->port = port;
1222 fwd->slirp = s->slirp;
1224 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1225 NULL, fwd);
1226 return;
1228 fail_syntax:
1229 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
1232 void do_info_usernet(Monitor *mon)
1234 SlirpState *s;
1236 TAILQ_FOREACH(s, &slirp_stacks, entry) {
1237 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1238 slirp_connection_info(s->slirp, mon);
1242 #endif /* CONFIG_SLIRP */
1244 #if !defined(_WIN32)
1246 typedef struct TAPState {
1247 VLANClientState *vc;
1248 int fd;
1249 char down_script[1024];
1250 char down_script_arg[128];
1251 uint8_t buf[4096];
1252 unsigned int read_poll : 1;
1253 unsigned int write_poll : 1;
1254 } TAPState;
1256 static int launch_script(const char *setup_script, const char *ifname, int fd);
1258 static int tap_can_send(void *opaque);
1259 static void tap_send(void *opaque);
1260 static void tap_writable(void *opaque);
1262 static void tap_update_fd_handler(TAPState *s)
1264 qemu_set_fd_handler2(s->fd,
1265 s->read_poll ? tap_can_send : NULL,
1266 s->read_poll ? tap_send : NULL,
1267 s->write_poll ? tap_writable : NULL,
1271 static void tap_read_poll(TAPState *s, int enable)
1273 s->read_poll = !!enable;
1274 tap_update_fd_handler(s);
1277 static void tap_write_poll(TAPState *s, int enable)
1279 s->write_poll = !!enable;
1280 tap_update_fd_handler(s);
1283 static void tap_writable(void *opaque)
1285 TAPState *s = opaque;
1287 tap_write_poll(s, 0);
1289 qemu_flush_queued_packets(s->vc);
1292 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1293 int iovcnt)
1295 TAPState *s = vc->opaque;
1296 ssize_t len;
1298 do {
1299 len = writev(s->fd, iov, iovcnt);
1300 } while (len == -1 && errno == EINTR);
1302 if (len == -1 && errno == EAGAIN) {
1303 tap_write_poll(s, 1);
1304 return 0;
1307 return len;
1310 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1312 TAPState *s = vc->opaque;
1313 ssize_t len;
1315 do {
1316 len = write(s->fd, buf, size);
1317 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1319 return len;
1322 static int tap_can_send(void *opaque)
1324 TAPState *s = opaque;
1326 return qemu_can_send_packet(s->vc);
1329 #ifdef __sun__
1330 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1332 struct strbuf sbuf;
1333 int f = 0;
1335 sbuf.maxlen = maxlen;
1336 sbuf.buf = (char *)buf;
1338 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1340 #else
1341 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1343 return read(tapfd, buf, maxlen);
1345 #endif
1347 static void tap_send_completed(VLANClientState *vc, ssize_t len)
1349 TAPState *s = vc->opaque;
1350 tap_read_poll(s, 1);
1353 static void tap_send(void *opaque)
1355 TAPState *s = opaque;
1356 int size;
1358 do {
1359 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1360 if (size <= 0) {
1361 break;
1364 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1365 if (size == 0) {
1366 tap_read_poll(s, 0);
1368 } while (size > 0);
1371 #ifdef TUNSETSNDBUF
1372 /* sndbuf should be set to a value lower than the tx queue
1373 * capacity of any destination network interface.
1374 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1375 * a good default, given a 1500 byte MTU.
1377 #define TAP_DEFAULT_SNDBUF 1024*1024
1379 static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1381 int sndbuf = TAP_DEFAULT_SNDBUF;
1383 if (sndbuf_str) {
1384 sndbuf = atoi(sndbuf_str);
1387 if (!sndbuf) {
1388 sndbuf = INT_MAX;
1391 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && sndbuf_str) {
1392 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1393 strerror(errno));
1396 #else
1397 static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1399 if (sndbuf_str) {
1400 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1403 #endif /* TUNSETSNDBUF */
1405 static void tap_cleanup(VLANClientState *vc)
1407 TAPState *s = vc->opaque;
1409 qemu_purge_queued_packets(vc);
1411 if (s->down_script[0])
1412 launch_script(s->down_script, s->down_script_arg, s->fd);
1414 tap_read_poll(s, 0);
1415 tap_write_poll(s, 0);
1416 close(s->fd);
1417 qemu_free(s);
1420 /* fd support */
1422 static TAPState *net_tap_fd_init(VLANState *vlan,
1423 const char *model,
1424 const char *name,
1425 int fd)
1427 TAPState *s;
1429 s = qemu_mallocz(sizeof(TAPState));
1430 s->fd = fd;
1431 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1432 tap_receive_iov, tap_cleanup, s);
1433 tap_read_poll(s, 1);
1434 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
1435 return s;
1438 #if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
1439 static int tap_open(char *ifname, int ifname_size)
1441 int fd;
1442 char *dev;
1443 struct stat s;
1445 TFR(fd = open("/dev/tap", O_RDWR));
1446 if (fd < 0) {
1447 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1448 return -1;
1451 fstat(fd, &s);
1452 dev = devname(s.st_rdev, S_IFCHR);
1453 pstrcpy(ifname, ifname_size, dev);
1455 fcntl(fd, F_SETFL, O_NONBLOCK);
1456 return fd;
1458 #elif defined(__sun__)
1459 #define TUNNEWPPA (('T'<<16) | 0x0001)
1461 * Allocate TAP device, returns opened fd.
1462 * Stores dev name in the first arg(must be large enough).
1464 static int tap_alloc(char *dev, size_t dev_size)
1466 int tap_fd, if_fd, ppa = -1;
1467 static int ip_fd = 0;
1468 char *ptr;
1470 static int arp_fd = 0;
1471 int ip_muxid, arp_muxid;
1472 struct strioctl strioc_if, strioc_ppa;
1473 int link_type = I_PLINK;;
1474 struct lifreq ifr;
1475 char actual_name[32] = "";
1477 memset(&ifr, 0x0, sizeof(ifr));
1479 if( *dev ){
1480 ptr = dev;
1481 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1482 ppa = atoi(ptr);
1485 /* Check if IP device was opened */
1486 if( ip_fd )
1487 close(ip_fd);
1489 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1490 if (ip_fd < 0) {
1491 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1492 return -1;
1495 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1496 if (tap_fd < 0) {
1497 syslog(LOG_ERR, "Can't open /dev/tap");
1498 return -1;
1501 /* Assign a new PPA and get its unit number. */
1502 strioc_ppa.ic_cmd = TUNNEWPPA;
1503 strioc_ppa.ic_timout = 0;
1504 strioc_ppa.ic_len = sizeof(ppa);
1505 strioc_ppa.ic_dp = (char *)&ppa;
1506 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1507 syslog (LOG_ERR, "Can't assign new interface");
1509 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1510 if (if_fd < 0) {
1511 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1512 return -1;
1514 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1515 syslog(LOG_ERR, "Can't push IP module");
1516 return -1;
1519 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1520 syslog(LOG_ERR, "Can't get flags\n");
1522 snprintf (actual_name, 32, "tap%d", ppa);
1523 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1525 ifr.lifr_ppa = ppa;
1526 /* Assign ppa according to the unit number returned by tun device */
1528 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1529 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1530 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1531 syslog (LOG_ERR, "Can't get flags\n");
1532 /* Push arp module to if_fd */
1533 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1534 syslog (LOG_ERR, "Can't push ARP module (2)");
1536 /* Push arp module to ip_fd */
1537 if (ioctl (ip_fd, I_POP, NULL) < 0)
1538 syslog (LOG_ERR, "I_POP failed\n");
1539 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1540 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1541 /* Open arp_fd */
1542 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1543 if (arp_fd < 0)
1544 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1546 /* Set ifname to arp */
1547 strioc_if.ic_cmd = SIOCSLIFNAME;
1548 strioc_if.ic_timout = 0;
1549 strioc_if.ic_len = sizeof(ifr);
1550 strioc_if.ic_dp = (char *)&ifr;
1551 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1552 syslog (LOG_ERR, "Can't set ifname to arp\n");
1555 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1556 syslog(LOG_ERR, "Can't link TAP device to IP");
1557 return -1;
1560 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1561 syslog (LOG_ERR, "Can't link TAP device to ARP");
1563 close (if_fd);
1565 memset(&ifr, 0x0, sizeof(ifr));
1566 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1567 ifr.lifr_ip_muxid = ip_muxid;
1568 ifr.lifr_arp_muxid = arp_muxid;
1570 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1572 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1573 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1574 syslog (LOG_ERR, "Can't set multiplexor id");
1577 snprintf(dev, dev_size, "tap%d", ppa);
1578 return tap_fd;
1581 static int tap_open(char *ifname, int ifname_size)
1583 char dev[10]="";
1584 int fd;
1585 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1586 fprintf(stderr, "Cannot allocate TAP device\n");
1587 return -1;
1589 pstrcpy(ifname, ifname_size, dev);
1590 fcntl(fd, F_SETFL, O_NONBLOCK);
1591 return fd;
1593 #elif defined (_AIX)
1594 static int tap_open(char *ifname, int ifname_size)
1596 fprintf (stderr, "no tap on AIX\n");
1597 return -1;
1599 #else
1600 static int tap_open(char *ifname, int ifname_size)
1602 struct ifreq ifr;
1603 int fd, ret;
1605 TFR(fd = open("/dev/net/tun", O_RDWR));
1606 if (fd < 0) {
1607 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1608 return -1;
1610 memset(&ifr, 0, sizeof(ifr));
1611 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1612 if (ifname[0] != '\0')
1613 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1614 else
1615 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1616 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1617 if (ret != 0) {
1618 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1619 close(fd);
1620 return -1;
1622 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1623 fcntl(fd, F_SETFL, O_NONBLOCK);
1624 return fd;
1626 #endif
1628 static int launch_script(const char *setup_script, const char *ifname, int fd)
1630 sigset_t oldmask, mask;
1631 int pid, status;
1632 char *args[3];
1633 char **parg;
1635 sigemptyset(&mask);
1636 sigaddset(&mask, SIGCHLD);
1637 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1639 /* try to launch network script */
1640 pid = fork();
1641 if (pid == 0) {
1642 int open_max = sysconf(_SC_OPEN_MAX), i;
1644 for (i = 0; i < open_max; i++) {
1645 if (i != STDIN_FILENO &&
1646 i != STDOUT_FILENO &&
1647 i != STDERR_FILENO &&
1648 i != fd) {
1649 close(i);
1652 parg = args;
1653 *parg++ = (char *)setup_script;
1654 *parg++ = (char *)ifname;
1655 *parg++ = NULL;
1656 execv(setup_script, args);
1657 _exit(1);
1658 } else if (pid > 0) {
1659 while (waitpid(pid, &status, 0) != pid) {
1660 /* loop */
1662 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1664 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1665 return 0;
1668 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1669 return -1;
1672 static TAPState *net_tap_init(VLANState *vlan, const char *model,
1673 const char *name, const char *ifname1,
1674 const char *setup_script, const char *down_script)
1676 TAPState *s;
1677 int fd;
1678 char ifname[128];
1680 if (ifname1 != NULL)
1681 pstrcpy(ifname, sizeof(ifname), ifname1);
1682 else
1683 ifname[0] = '\0';
1684 TFR(fd = tap_open(ifname, sizeof(ifname)));
1685 if (fd < 0)
1686 return NULL;
1688 if (!setup_script || !strcmp(setup_script, "no"))
1689 setup_script = "";
1690 if (setup_script[0] != '\0' &&
1691 launch_script(setup_script, ifname, fd)) {
1692 return NULL;
1694 s = net_tap_fd_init(vlan, model, name, fd);
1695 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1696 "ifname=%s,script=%s,downscript=%s",
1697 ifname, setup_script, down_script);
1698 if (down_script && strcmp(down_script, "no")) {
1699 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1700 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1702 return s;
1705 #endif /* !_WIN32 */
1707 #if defined(CONFIG_VDE)
1708 typedef struct VDEState {
1709 VLANClientState *vc;
1710 VDECONN *vde;
1711 } VDEState;
1713 static void vde_to_qemu(void *opaque)
1715 VDEState *s = opaque;
1716 uint8_t buf[4096];
1717 int size;
1719 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1720 if (size > 0) {
1721 qemu_send_packet(s->vc, buf, size);
1725 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1727 VDEState *s = vc->opaque;
1728 ssize_t ret;
1730 do {
1731 ret = vde_send(s->vde, (const char *)buf, size, 0);
1732 } while (ret < 0 && errno == EINTR);
1734 return ret;
1737 static void vde_cleanup(VLANClientState *vc)
1739 VDEState *s = vc->opaque;
1740 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1741 vde_close(s->vde);
1742 qemu_free(s);
1745 static int net_vde_init(VLANState *vlan, const char *model,
1746 const char *name, const char *sock,
1747 int port, const char *group, int mode)
1749 VDEState *s;
1750 char *init_group = strlen(group) ? (char *)group : NULL;
1751 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1753 struct vde_open_args args = {
1754 .port = port,
1755 .group = init_group,
1756 .mode = mode,
1759 s = qemu_mallocz(sizeof(VDEState));
1760 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1761 if (!s->vde){
1762 free(s);
1763 return -1;
1765 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
1766 NULL, vde_cleanup, s);
1767 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1768 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1769 sock, vde_datafd(s->vde));
1770 return 0;
1772 #endif
1774 /* network connection */
1775 typedef struct NetSocketState {
1776 VLANClientState *vc;
1777 int fd;
1778 int state; /* 0 = getting length, 1 = getting data */
1779 unsigned int index;
1780 unsigned int packet_len;
1781 uint8_t buf[4096];
1782 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1783 } NetSocketState;
1785 typedef struct NetSocketListenState {
1786 VLANState *vlan;
1787 char *model;
1788 char *name;
1789 int fd;
1790 } NetSocketListenState;
1792 /* XXX: we consider we can send the whole packet without blocking */
1793 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1795 NetSocketState *s = vc->opaque;
1796 uint32_t len;
1797 len = htonl(size);
1799 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1800 return send_all(s->fd, buf, size);
1803 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1805 NetSocketState *s = vc->opaque;
1807 return sendto(s->fd, (const void *)buf, size, 0,
1808 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1811 static void net_socket_send(void *opaque)
1813 NetSocketState *s = opaque;
1814 int size, err;
1815 unsigned l;
1816 uint8_t buf1[4096];
1817 const uint8_t *buf;
1819 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1820 if (size < 0) {
1821 err = socket_error();
1822 if (err != EWOULDBLOCK)
1823 goto eoc;
1824 } else if (size == 0) {
1825 /* end of connection */
1826 eoc:
1827 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1828 closesocket(s->fd);
1829 return;
1831 buf = buf1;
1832 while (size > 0) {
1833 /* reassemble a packet from the network */
1834 switch(s->state) {
1835 case 0:
1836 l = 4 - s->index;
1837 if (l > size)
1838 l = size;
1839 memcpy(s->buf + s->index, buf, l);
1840 buf += l;
1841 size -= l;
1842 s->index += l;
1843 if (s->index == 4) {
1844 /* got length */
1845 s->packet_len = ntohl(*(uint32_t *)s->buf);
1846 s->index = 0;
1847 s->state = 1;
1849 break;
1850 case 1:
1851 l = s->packet_len - s->index;
1852 if (l > size)
1853 l = size;
1854 if (s->index + l <= sizeof(s->buf)) {
1855 memcpy(s->buf + s->index, buf, l);
1856 } else {
1857 fprintf(stderr, "serious error: oversized packet received,"
1858 "connection terminated.\n");
1859 s->state = 0;
1860 goto eoc;
1863 s->index += l;
1864 buf += l;
1865 size -= l;
1866 if (s->index >= s->packet_len) {
1867 qemu_send_packet(s->vc, s->buf, s->packet_len);
1868 s->index = 0;
1869 s->state = 0;
1871 break;
1876 static void net_socket_send_dgram(void *opaque)
1878 NetSocketState *s = opaque;
1879 int size;
1881 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1882 if (size < 0)
1883 return;
1884 if (size == 0) {
1885 /* end of connection */
1886 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1887 return;
1889 qemu_send_packet(s->vc, s->buf, size);
1892 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1894 struct ip_mreq imr;
1895 int fd;
1896 int val, ret;
1897 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1898 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1899 inet_ntoa(mcastaddr->sin_addr),
1900 (int)ntohl(mcastaddr->sin_addr.s_addr));
1901 return -1;
1904 fd = socket(PF_INET, SOCK_DGRAM, 0);
1905 if (fd < 0) {
1906 perror("socket(PF_INET, SOCK_DGRAM)");
1907 return -1;
1910 val = 1;
1911 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1912 (const char *)&val, sizeof(val));
1913 if (ret < 0) {
1914 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1915 goto fail;
1918 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1919 if (ret < 0) {
1920 perror("bind");
1921 goto fail;
1924 /* Add host to multicast group */
1925 imr.imr_multiaddr = mcastaddr->sin_addr;
1926 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1928 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1929 (const char *)&imr, sizeof(struct ip_mreq));
1930 if (ret < 0) {
1931 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1932 goto fail;
1935 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1936 val = 1;
1937 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1938 (const char *)&val, sizeof(val));
1939 if (ret < 0) {
1940 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1941 goto fail;
1944 socket_set_nonblock(fd);
1945 return fd;
1946 fail:
1947 if (fd >= 0)
1948 closesocket(fd);
1949 return -1;
1952 static void net_socket_cleanup(VLANClientState *vc)
1954 NetSocketState *s = vc->opaque;
1955 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1956 close(s->fd);
1957 qemu_free(s);
1960 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1961 const char *model,
1962 const char *name,
1963 int fd, int is_connected)
1965 struct sockaddr_in saddr;
1966 int newfd;
1967 socklen_t saddr_len;
1968 NetSocketState *s;
1970 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1971 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1972 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1975 if (is_connected) {
1976 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1977 /* must be bound */
1978 if (saddr.sin_addr.s_addr==0) {
1979 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1980 fd);
1981 return NULL;
1983 /* clone dgram socket */
1984 newfd = net_socket_mcast_create(&saddr);
1985 if (newfd < 0) {
1986 /* error already reported by net_socket_mcast_create() */
1987 close(fd);
1988 return NULL;
1990 /* clone newfd to fd, close newfd */
1991 dup2(newfd, fd);
1992 close(newfd);
1994 } else {
1995 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1996 fd, strerror(errno));
1997 return NULL;
2001 s = qemu_mallocz(sizeof(NetSocketState));
2002 s->fd = fd;
2004 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
2005 NULL, net_socket_cleanup, s);
2006 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2008 /* mcast: save bound address as dst */
2009 if (is_connected) s->dgram_dst=saddr;
2011 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2012 "socket: fd=%d (%s mcast=%s:%d)",
2013 fd, is_connected? "cloned" : "",
2014 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2015 return s;
2018 static void net_socket_connect(void *opaque)
2020 NetSocketState *s = opaque;
2021 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2024 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2025 const char *model,
2026 const char *name,
2027 int fd, int is_connected)
2029 NetSocketState *s;
2030 s = qemu_mallocz(sizeof(NetSocketState));
2031 s->fd = fd;
2032 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
2033 NULL, net_socket_cleanup, s);
2034 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2035 "socket: fd=%d", fd);
2036 if (is_connected) {
2037 net_socket_connect(s);
2038 } else {
2039 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2041 return s;
2044 static NetSocketState *net_socket_fd_init(VLANState *vlan,
2045 const char *model, const char *name,
2046 int fd, int is_connected)
2048 int so_type=-1, optlen=sizeof(so_type);
2050 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2051 (socklen_t *)&optlen)< 0) {
2052 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2053 return NULL;
2055 switch(so_type) {
2056 case SOCK_DGRAM:
2057 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
2058 case SOCK_STREAM:
2059 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2060 default:
2061 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2062 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
2063 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2065 return NULL;
2068 static void net_socket_accept(void *opaque)
2070 NetSocketListenState *s = opaque;
2071 NetSocketState *s1;
2072 struct sockaddr_in saddr;
2073 socklen_t len;
2074 int fd;
2076 for(;;) {
2077 len = sizeof(saddr);
2078 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2079 if (fd < 0 && errno != EINTR) {
2080 return;
2081 } else if (fd >= 0) {
2082 break;
2085 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
2086 if (!s1) {
2087 closesocket(fd);
2088 } else {
2089 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2090 "socket: connection from %s:%d",
2091 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2095 static int net_socket_listen_init(VLANState *vlan,
2096 const char *model,
2097 const char *name,
2098 const char *host_str)
2100 NetSocketListenState *s;
2101 int fd, val, ret;
2102 struct sockaddr_in saddr;
2104 if (parse_host_port(&saddr, host_str) < 0)
2105 return -1;
2107 s = qemu_mallocz(sizeof(NetSocketListenState));
2109 fd = socket(PF_INET, SOCK_STREAM, 0);
2110 if (fd < 0) {
2111 perror("socket");
2112 return -1;
2114 socket_set_nonblock(fd);
2116 /* allow fast reuse */
2117 val = 1;
2118 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2120 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2121 if (ret < 0) {
2122 perror("bind");
2123 return -1;
2125 ret = listen(fd, 0);
2126 if (ret < 0) {
2127 perror("listen");
2128 return -1;
2130 s->vlan = vlan;
2131 s->model = strdup(model);
2132 s->name = name ? strdup(name) : NULL;
2133 s->fd = fd;
2134 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2135 return 0;
2138 static int net_socket_connect_init(VLANState *vlan,
2139 const char *model,
2140 const char *name,
2141 const char *host_str)
2143 NetSocketState *s;
2144 int fd, connected, ret, err;
2145 struct sockaddr_in saddr;
2147 if (parse_host_port(&saddr, host_str) < 0)
2148 return -1;
2150 fd = socket(PF_INET, SOCK_STREAM, 0);
2151 if (fd < 0) {
2152 perror("socket");
2153 return -1;
2155 socket_set_nonblock(fd);
2157 connected = 0;
2158 for(;;) {
2159 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2160 if (ret < 0) {
2161 err = socket_error();
2162 if (err == EINTR || err == EWOULDBLOCK) {
2163 } else if (err == EINPROGRESS) {
2164 break;
2165 #ifdef _WIN32
2166 } else if (err == WSAEALREADY) {
2167 break;
2168 #endif
2169 } else {
2170 perror("connect");
2171 closesocket(fd);
2172 return -1;
2174 } else {
2175 connected = 1;
2176 break;
2179 s = net_socket_fd_init(vlan, model, name, fd, connected);
2180 if (!s)
2181 return -1;
2182 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2183 "socket: connect to %s:%d",
2184 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2185 return 0;
2188 static int net_socket_mcast_init(VLANState *vlan,
2189 const char *model,
2190 const char *name,
2191 const char *host_str)
2193 NetSocketState *s;
2194 int fd;
2195 struct sockaddr_in saddr;
2197 if (parse_host_port(&saddr, host_str) < 0)
2198 return -1;
2201 fd = net_socket_mcast_create(&saddr);
2202 if (fd < 0)
2203 return -1;
2205 s = net_socket_fd_init(vlan, model, name, fd, 0);
2206 if (!s)
2207 return -1;
2209 s->dgram_dst = saddr;
2211 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2212 "socket: mcast=%s:%d",
2213 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2214 return 0;
2218 typedef struct DumpState {
2219 VLANClientState *pcap_vc;
2220 int fd;
2221 int pcap_caplen;
2222 } DumpState;
2224 #define PCAP_MAGIC 0xa1b2c3d4
2226 struct pcap_file_hdr {
2227 uint32_t magic;
2228 uint16_t version_major;
2229 uint16_t version_minor;
2230 int32_t thiszone;
2231 uint32_t sigfigs;
2232 uint32_t snaplen;
2233 uint32_t linktype;
2236 struct pcap_sf_pkthdr {
2237 struct {
2238 int32_t tv_sec;
2239 int32_t tv_usec;
2240 } ts;
2241 uint32_t caplen;
2242 uint32_t len;
2245 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
2247 DumpState *s = vc->opaque;
2248 struct pcap_sf_pkthdr hdr;
2249 int64_t ts;
2250 int caplen;
2252 /* Early return in case of previous error. */
2253 if (s->fd < 0) {
2254 return size;
2257 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
2258 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2260 hdr.ts.tv_sec = ts / 1000000;
2261 hdr.ts.tv_usec = ts % 1000000;
2262 hdr.caplen = caplen;
2263 hdr.len = size;
2264 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2265 write(s->fd, buf, caplen) != caplen) {
2266 qemu_log("-net dump write error - stop dump\n");
2267 close(s->fd);
2268 s->fd = -1;
2271 return size;
2274 static void net_dump_cleanup(VLANClientState *vc)
2276 DumpState *s = vc->opaque;
2278 close(s->fd);
2279 qemu_free(s);
2282 static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
2283 const char *name, const char *filename, int len)
2285 struct pcap_file_hdr hdr;
2286 DumpState *s;
2288 s = qemu_malloc(sizeof(DumpState));
2290 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
2291 if (s->fd < 0) {
2292 config_error(mon, "-net dump: can't open %s\n", filename);
2293 return -1;
2296 s->pcap_caplen = len;
2298 hdr.magic = PCAP_MAGIC;
2299 hdr.version_major = 2;
2300 hdr.version_minor = 4;
2301 hdr.thiszone = 0;
2302 hdr.sigfigs = 0;
2303 hdr.snaplen = s->pcap_caplen;
2304 hdr.linktype = 1;
2306 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2307 config_error(mon, "-net dump write error: %s\n", strerror(errno));
2308 close(s->fd);
2309 qemu_free(s);
2310 return -1;
2313 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
2314 net_dump_cleanup, s);
2315 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2316 "dump to %s (len=%d)", filename, len);
2317 return 0;
2320 /* find or alloc a new VLAN */
2321 VLANState *qemu_find_vlan(int id, int allocate)
2323 VLANState **pvlan, *vlan;
2324 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2325 if (vlan->id == id)
2326 return vlan;
2328 if (!allocate) {
2329 return NULL;
2331 vlan = qemu_mallocz(sizeof(VLANState));
2332 vlan->id = id;
2333 TAILQ_INIT(&vlan->send_queue);
2334 vlan->next = NULL;
2335 pvlan = &first_vlan;
2336 while (*pvlan != NULL)
2337 pvlan = &(*pvlan)->next;
2338 *pvlan = vlan;
2339 return vlan;
2342 static int nic_get_free_idx(void)
2344 int index;
2346 for (index = 0; index < MAX_NICS; index++)
2347 if (!nd_table[index].used)
2348 return index;
2349 return -1;
2352 void qemu_check_nic_model(NICInfo *nd, const char *model)
2354 const char *models[2];
2356 models[0] = model;
2357 models[1] = NULL;
2359 qemu_check_nic_model_list(nd, models, model);
2362 void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2363 const char *default_model)
2365 int i, exit_status = 0;
2367 if (!nd->model)
2368 nd->model = strdup(default_model);
2370 if (strcmp(nd->model, "?") != 0) {
2371 for (i = 0 ; models[i]; i++)
2372 if (strcmp(nd->model, models[i]) == 0)
2373 return;
2375 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2376 exit_status = 1;
2379 fprintf(stderr, "qemu: Supported NIC models: ");
2380 for (i = 0 ; models[i]; i++)
2381 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2383 exit(exit_status);
2386 static int net_handle_fd_param(Monitor *mon, const char *param)
2388 if (!qemu_isdigit(param[0])) {
2389 int fd;
2391 fd = monitor_get_fd(mon, param);
2392 if (fd == -1) {
2393 config_error(mon, "No file descriptor named %s found", param);
2394 return -1;
2397 return fd;
2398 } else {
2399 return strtol(param, NULL, 0);
2403 int net_client_init(Monitor *mon, const char *device, const char *p)
2405 char buf[1024];
2406 int vlan_id, ret;
2407 VLANState *vlan;
2408 char *name = NULL;
2410 vlan_id = 0;
2411 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2412 vlan_id = strtol(buf, NULL, 0);
2414 vlan = qemu_find_vlan(vlan_id, 1);
2416 if (get_param_value(buf, sizeof(buf), "name", p)) {
2417 name = qemu_strdup(buf);
2419 if (!strcmp(device, "nic")) {
2420 static const char * const nic_params[] = {
2421 "vlan", "name", "macaddr", "model", "addr", "id", "vectors", NULL
2423 NICInfo *nd;
2424 uint8_t *macaddr;
2425 int idx = nic_get_free_idx();
2427 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
2428 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2429 ret = -1;
2430 goto out;
2432 if (idx == -1 || nb_nics >= MAX_NICS) {
2433 config_error(mon, "Too Many NICs\n");
2434 ret = -1;
2435 goto out;
2437 nd = &nd_table[idx];
2438 macaddr = nd->macaddr;
2439 macaddr[0] = 0x52;
2440 macaddr[1] = 0x54;
2441 macaddr[2] = 0x00;
2442 macaddr[3] = 0x12;
2443 macaddr[4] = 0x34;
2444 macaddr[5] = 0x56 + idx;
2446 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2447 if (parse_macaddr(macaddr, buf) < 0) {
2448 config_error(mon, "invalid syntax for ethernet address\n");
2449 ret = -1;
2450 goto out;
2453 if (get_param_value(buf, sizeof(buf), "model", p)) {
2454 nd->model = strdup(buf);
2456 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2457 nd->devaddr = strdup(buf);
2459 if (get_param_value(buf, sizeof(buf), "id", p)) {
2460 nd->id = strdup(buf);
2462 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2463 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2464 char *endptr;
2465 long vectors = strtol(buf, &endptr, 0);
2466 if (*endptr) {
2467 config_error(mon, "invalid syntax for # of vectors\n");
2468 ret = -1;
2469 goto out;
2471 if (vectors < 0 || vectors > 0x7ffffff) {
2472 config_error(mon, "invalid # of vectors\n");
2473 ret = -1;
2474 goto out;
2476 nd->nvectors = vectors;
2478 nd->vlan = vlan;
2479 nd->name = name;
2480 nd->used = 1;
2481 name = NULL;
2482 nb_nics++;
2483 vlan->nb_guest_devs++;
2484 ret = idx;
2485 } else
2486 if (!strcmp(device, "none")) {
2487 if (*p != '\0') {
2488 config_error(mon, "'none' takes no parameters\n");
2489 ret = -1;
2490 goto out;
2492 /* does nothing. It is needed to signal that no network cards
2493 are wanted */
2494 ret = 0;
2495 } else
2496 #ifdef CONFIG_SLIRP
2497 if (!strcmp(device, "user")) {
2498 static const char * const slirp_params[] = {
2499 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2500 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2501 "hostfwd", "guestfwd", NULL
2503 struct slirp_config_str *config;
2504 int restricted = 0;
2505 char *vnet = NULL;
2506 char *vhost = NULL;
2507 char *vhostname = NULL;
2508 char *tftp_export = NULL;
2509 char *bootfile = NULL;
2510 char *vdhcp_start = NULL;
2511 char *vnamesrv = NULL;
2512 char *smb_export = NULL;
2513 char *vsmbsrv = NULL;
2514 const char *q;
2516 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
2517 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2518 ret = -1;
2519 goto out;
2521 if (get_param_value(buf, sizeof(buf), "ip", p)) {
2522 int vnet_buflen = strlen(buf) + strlen("/24") + 1;
2523 /* emulate legacy parameter */
2524 vnet = qemu_malloc(vnet_buflen);
2525 pstrcpy(vnet, vnet_buflen, buf);
2526 pstrcat(vnet, vnet_buflen, "/24");
2528 if (get_param_value(buf, sizeof(buf), "net", p)) {
2529 vnet = qemu_strdup(buf);
2531 if (get_param_value(buf, sizeof(buf), "host", p)) {
2532 vhost = qemu_strdup(buf);
2534 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
2535 vhostname = qemu_strdup(buf);
2537 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
2538 restricted = (buf[0] == 'y') ? 1 : 0;
2540 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2541 vdhcp_start = qemu_strdup(buf);
2543 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2544 vnamesrv = qemu_strdup(buf);
2546 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2547 tftp_export = qemu_strdup(buf);
2549 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2550 bootfile = qemu_strdup(buf);
2552 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2553 smb_export = qemu_strdup(buf);
2554 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2555 vsmbsrv = qemu_strdup(buf);
2558 q = p;
2559 while (1) {
2560 config = qemu_malloc(sizeof(*config));
2561 if (!get_next_param_value(config->str, sizeof(config->str),
2562 "hostfwd", &q)) {
2563 break;
2565 config->flags = SLIRP_CFG_HOSTFWD;
2566 config->next = slirp_configs;
2567 slirp_configs = config;
2568 config = NULL;
2570 q = p;
2571 while (1) {
2572 config = qemu_malloc(sizeof(*config));
2573 if (!get_next_param_value(config->str, sizeof(config->str),
2574 "guestfwd", &q)) {
2575 break;
2577 config->flags = 0;
2578 config->next = slirp_configs;
2579 slirp_configs = config;
2580 config = NULL;
2582 qemu_free(config);
2583 vlan->nb_host_devs++;
2584 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2585 vhostname, tftp_export, bootfile, vdhcp_start,
2586 vnamesrv, smb_export, vsmbsrv);
2587 qemu_free(vnet);
2588 qemu_free(vhost);
2589 qemu_free(vhostname);
2590 qemu_free(tftp_export);
2591 qemu_free(bootfile);
2592 qemu_free(vdhcp_start);
2593 qemu_free(vnamesrv);
2594 qemu_free(smb_export);
2595 qemu_free(vsmbsrv);
2596 } else if (!strcmp(device, "channel")) {
2597 if (TAILQ_EMPTY(&slirp_stacks)) {
2598 struct slirp_config_str *config;
2600 config = qemu_malloc(sizeof(*config));
2601 pstrcpy(config->str, sizeof(config->str), p);
2602 config->flags = SLIRP_CFG_LEGACY;
2603 config->next = slirp_configs;
2604 slirp_configs = config;
2605 } else {
2606 slirp_guestfwd(TAILQ_FIRST(&slirp_stacks), mon, p, 1);
2608 ret = 0;
2609 } else
2610 #endif
2611 #ifdef _WIN32
2612 if (!strcmp(device, "tap")) {
2613 static const char * const tap_params[] = {
2614 "vlan", "name", "ifname", NULL
2616 char ifname[64];
2618 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
2619 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2620 ret = -1;
2621 goto out;
2623 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2624 config_error(mon, "tap: no interface name\n");
2625 ret = -1;
2626 goto out;
2628 vlan->nb_host_devs++;
2629 ret = tap_win32_init(vlan, device, name, ifname);
2630 } else
2631 #elif defined (_AIX)
2632 #else
2633 if (!strcmp(device, "tap")) {
2634 char ifname[64], chkbuf[64];
2635 char setup_script[1024], down_script[1024];
2636 TAPState *s;
2637 int fd;
2638 vlan->nb_host_devs++;
2639 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2640 static const char * const fd_params[] = {
2641 "vlan", "name", "fd", "sndbuf", NULL
2643 ret = -1;
2644 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2645 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2646 goto out;
2648 fd = net_handle_fd_param(mon, buf);
2649 if (fd == -1) {
2650 goto out;
2652 fcntl(fd, F_SETFL, O_NONBLOCK);
2653 s = net_tap_fd_init(vlan, device, name, fd);
2654 if (!s) {
2655 close(fd);
2657 } else {
2658 static const char * const tap_params[] = {
2659 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
2661 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
2662 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2663 ret = -1;
2664 goto out;
2666 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2667 ifname[0] = '\0';
2669 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2670 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2672 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2673 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2675 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2677 if (s != NULL) {
2678 const char *sndbuf_str = NULL;
2679 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
2680 sndbuf_str = buf;
2682 tap_set_sndbuf(s, sndbuf_str, mon);
2683 ret = 0;
2684 } else {
2685 ret = -1;
2687 } else
2688 #endif
2689 if (!strcmp(device, "socket")) {
2690 char chkbuf[64];
2691 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2692 static const char * const fd_params[] = {
2693 "vlan", "name", "fd", NULL
2695 int fd;
2696 ret = -1;
2697 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2698 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2699 goto out;
2701 fd = net_handle_fd_param(mon, buf);
2702 if (fd == -1) {
2703 goto out;
2705 if (!net_socket_fd_init(vlan, device, name, fd, 1)) {
2706 close(fd);
2707 goto out;
2709 ret = 0;
2710 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
2711 static const char * const listen_params[] = {
2712 "vlan", "name", "listen", NULL
2714 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
2715 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2716 ret = -1;
2717 goto out;
2719 ret = net_socket_listen_init(vlan, device, name, buf);
2720 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
2721 static const char * const connect_params[] = {
2722 "vlan", "name", "connect", NULL
2724 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
2725 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2726 ret = -1;
2727 goto out;
2729 ret = net_socket_connect_init(vlan, device, name, buf);
2730 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
2731 static const char * const mcast_params[] = {
2732 "vlan", "name", "mcast", NULL
2734 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
2735 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2736 ret = -1;
2737 goto out;
2739 ret = net_socket_mcast_init(vlan, device, name, buf);
2740 } else {
2741 config_error(mon, "Unknown socket options: %s\n", p);
2742 ret = -1;
2743 goto out;
2745 vlan->nb_host_devs++;
2746 } else
2747 #ifdef CONFIG_VDE
2748 if (!strcmp(device, "vde")) {
2749 static const char * const vde_params[] = {
2750 "vlan", "name", "sock", "port", "group", "mode", NULL
2752 char vde_sock[1024], vde_group[512];
2753 int vde_port, vde_mode;
2755 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
2756 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2757 ret = -1;
2758 goto out;
2760 vlan->nb_host_devs++;
2761 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2762 vde_sock[0] = '\0';
2764 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2765 vde_port = strtol(buf, NULL, 10);
2766 } else {
2767 vde_port = 0;
2769 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2770 vde_group[0] = '\0';
2772 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2773 vde_mode = strtol(buf, NULL, 8);
2774 } else {
2775 vde_mode = 0700;
2777 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
2778 } else
2779 #endif
2780 if (!strcmp(device, "dump")) {
2781 int len = 65536;
2783 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2784 len = strtol(buf, NULL, 0);
2786 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2787 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2789 ret = net_dump_init(mon, vlan, device, name, buf, len);
2790 } else {
2791 config_error(mon, "Unknown network device: %s\n", device);
2792 ret = -1;
2793 goto out;
2795 if (ret < 0) {
2796 config_error(mon, "Could not initialize device '%s'\n", device);
2798 out:
2799 qemu_free(name);
2800 return ret;
2803 void net_client_uninit(NICInfo *nd)
2805 nd->vlan->nb_guest_devs--;
2806 nb_nics--;
2807 nd->used = 0;
2808 free((void *)nd->model);
2811 static int net_host_check_device(const char *device)
2813 int i;
2814 const char *valid_param_list[] = { "tap", "socket", "dump"
2815 #ifdef CONFIG_SLIRP
2816 ,"user"
2817 #endif
2818 #ifdef CONFIG_VDE
2819 ,"vde"
2820 #endif
2822 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2823 if (!strncmp(valid_param_list[i], device,
2824 strlen(valid_param_list[i])))
2825 return 1;
2828 return 0;
2831 void net_host_device_add(Monitor *mon, const QDict *qdict)
2833 const char *device = qdict_get_str(qdict, "device");
2834 const char *opts = qdict_get_try_str(qdict, "opts");
2836 if (!net_host_check_device(device)) {
2837 monitor_printf(mon, "invalid host network device %s\n", device);
2838 return;
2840 if (net_client_init(mon, device, opts ? opts : "") < 0) {
2841 monitor_printf(mon, "adding host network device %s failed\n", device);
2845 void net_host_device_remove(Monitor *mon, const QDict *qdict)
2847 VLANClientState *vc;
2848 int vlan_id = qdict_get_int(qdict, "vlan_id");
2849 const char *device = qdict_get_str(qdict, "device");
2851 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
2852 if (!vc) {
2853 return;
2855 if (!net_host_check_device(vc->model)) {
2856 monitor_printf(mon, "invalid host network device %s\n", device);
2857 return;
2859 qemu_del_vlan_client(vc);
2862 int net_client_parse(const char *str)
2864 const char *p;
2865 char *q;
2866 char device[64];
2868 p = str;
2869 q = device;
2870 while (*p != '\0' && *p != ',') {
2871 if ((q - device) < sizeof(device) - 1)
2872 *q++ = *p;
2873 p++;
2875 *q = '\0';
2876 if (*p == ',')
2877 p++;
2879 return net_client_init(NULL, device, p);
2882 void net_set_boot_mask(int net_boot_mask)
2884 int i;
2886 /* Only the first four NICs may be bootable */
2887 net_boot_mask = net_boot_mask & 0xF;
2889 for (i = 0; i < nb_nics; i++) {
2890 if (net_boot_mask & (1 << i)) {
2891 nd_table[i].bootable = 1;
2892 net_boot_mask &= ~(1 << i);
2896 if (net_boot_mask) {
2897 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2898 exit(1);
2902 void do_info_network(Monitor *mon)
2904 VLANState *vlan;
2905 VLANClientState *vc;
2907 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2908 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
2909 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
2910 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
2914 void do_set_link(Monitor *mon, const QDict *qdict)
2916 VLANState *vlan;
2917 VLANClientState *vc = NULL;
2918 const char *name = qdict_get_str(qdict, "name");
2919 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
2921 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2922 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2923 if (strcmp(vc->name, name) == 0)
2924 goto done;
2925 done:
2927 if (!vc) {
2928 monitor_printf(mon, "could not find network device '%s'\n", name);
2929 return;
2932 if (strcmp(up_or_down, "up") == 0)
2933 vc->link_down = 0;
2934 else if (strcmp(up_or_down, "down") == 0)
2935 vc->link_down = 1;
2936 else
2937 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2938 "valid\n", up_or_down);
2940 if (vc->link_status_changed)
2941 vc->link_status_changed(vc);
2944 void net_cleanup(void)
2946 VLANState *vlan;
2948 /* close network clients */
2949 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2950 VLANClientState *vc = vlan->first_client;
2952 while (vc) {
2953 VLANClientState *next = vc->next;
2955 qemu_del_vlan_client(vc);
2957 vc = next;
2962 void net_client_check(void)
2964 VLANState *vlan;
2966 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2967 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2968 continue;
2969 if (vlan->nb_guest_devs == 0)
2970 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2971 if (vlan->nb_host_devs == 0)
2972 fprintf(stderr,
2973 "Warning: vlan %d is not connected to host network\n",
2974 vlan->id);