slirp: Drop dead code
[qemu-kvm/fedora.git] / net.c
blobfe33b4f88e71a4ec89ec5fd251f3d023489b4089
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 #if defined(CONFIG_SLIRP)
124 #include "libslirp.h"
125 #endif
128 static VLANState *first_vlan;
130 /***********************************************************/
131 /* network device redirectors */
133 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
134 static void hex_dump(FILE *f, const uint8_t *buf, int size)
136 int len, i, j, c;
138 for(i=0;i<size;i+=16) {
139 len = size - i;
140 if (len > 16)
141 len = 16;
142 fprintf(f, "%08x ", i);
143 for(j=0;j<16;j++) {
144 if (j < len)
145 fprintf(f, " %02x", buf[i+j]);
146 else
147 fprintf(f, " ");
149 fprintf(f, " ");
150 for(j=0;j<len;j++) {
151 c = buf[i+j];
152 if (c < ' ' || c > '~')
153 c = '.';
154 fprintf(f, "%c", c);
156 fprintf(f, "\n");
159 #endif
161 static int parse_macaddr(uint8_t *macaddr, const char *p)
163 int i;
164 char *last_char;
165 long int offset;
167 errno = 0;
168 offset = strtol(p, &last_char, 0);
169 if (0 == errno && '\0' == *last_char &&
170 offset >= 0 && offset <= 0xFFFFFF) {
171 macaddr[3] = (offset & 0xFF0000) >> 16;
172 macaddr[4] = (offset & 0xFF00) >> 8;
173 macaddr[5] = offset & 0xFF;
174 return 0;
175 } else {
176 for(i = 0; i < 6; i++) {
177 macaddr[i] = strtol(p, (char **)&p, 16);
178 if (i == 5) {
179 if (*p != '\0')
180 return -1;
181 } else {
182 if (*p != ':' && *p != '-')
183 return -1;
184 p++;
187 return 0;
190 return -1;
193 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
195 const char *p, *p1;
196 int len;
197 p = *pp;
198 p1 = strchr(p, sep);
199 if (!p1)
200 return -1;
201 len = p1 - p;
202 p1++;
203 if (buf_size > 0) {
204 if (len > buf_size - 1)
205 len = buf_size - 1;
206 memcpy(buf, p, len);
207 buf[len] = '\0';
209 *pp = p1;
210 return 0;
213 int parse_host_src_port(struct sockaddr_in *haddr,
214 struct sockaddr_in *saddr,
215 const char *input_str)
217 char *str = strdup(input_str);
218 char *host_str = str;
219 char *src_str;
220 const char *src_str2;
221 char *ptr;
224 * Chop off any extra arguments at the end of the string which
225 * would start with a comma, then fill in the src port information
226 * if it was provided else use the "any address" and "any port".
228 if ((ptr = strchr(str,',')))
229 *ptr = '\0';
231 if ((src_str = strchr(input_str,'@'))) {
232 *src_str = '\0';
233 src_str++;
236 if (parse_host_port(haddr, host_str) < 0)
237 goto fail;
239 src_str2 = src_str;
240 if (!src_str || *src_str == '\0')
241 src_str2 = ":0";
243 if (parse_host_port(saddr, src_str2) < 0)
244 goto fail;
246 free(str);
247 return(0);
249 fail:
250 free(str);
251 return -1;
254 int parse_host_port(struct sockaddr_in *saddr, const char *str)
256 char buf[512];
257 struct hostent *he;
258 const char *p, *r;
259 int port;
261 p = str;
262 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
263 return -1;
264 saddr->sin_family = AF_INET;
265 if (buf[0] == '\0') {
266 saddr->sin_addr.s_addr = 0;
267 } else {
268 if (qemu_isdigit(buf[0])) {
269 if (!inet_aton(buf, &saddr->sin_addr))
270 return -1;
271 } else {
272 if ((he = gethostbyname(buf)) == NULL)
273 return - 1;
274 saddr->sin_addr = *(struct in_addr *)he->h_addr;
277 port = strtol(p, (char **)&r, 0);
278 if (r == p)
279 return -1;
280 saddr->sin_port = htons(port);
281 return 0;
284 #if !defined(_WIN32) && 0
285 static int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
287 const char *p;
288 int len;
290 len = MIN(108, strlen(str));
291 p = strchr(str, ',');
292 if (p)
293 len = MIN(len, p - str);
295 memset(uaddr, 0, sizeof(*uaddr));
297 uaddr->sun_family = AF_UNIX;
298 memcpy(uaddr->sun_path, str, len);
300 return 0;
302 #endif
304 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
306 snprintf(vc->info_str, sizeof(vc->info_str),
307 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
308 vc->model,
309 macaddr[0], macaddr[1], macaddr[2],
310 macaddr[3], macaddr[4], macaddr[5]);
313 static char *assign_name(VLANClientState *vc1, const char *model)
315 VLANState *vlan;
316 char buf[256];
317 int id = 0;
319 for (vlan = first_vlan; vlan; vlan = vlan->next) {
320 VLANClientState *vc;
322 for (vc = vlan->first_client; vc; vc = vc->next)
323 if (vc != vc1 && strcmp(vc->model, model) == 0)
324 id++;
327 snprintf(buf, sizeof(buf), "%s.%d", model, id);
329 return strdup(buf);
332 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
333 const char *model,
334 const char *name,
335 NetCanReceive *can_receive,
336 NetReceive *receive,
337 NetReceiveIOV *receive_iov,
338 NetCleanup *cleanup,
339 void *opaque)
341 VLANClientState *vc, **pvc;
342 vc = qemu_mallocz(sizeof(VLANClientState));
343 vc->model = strdup(model);
344 if (name)
345 vc->name = strdup(name);
346 else
347 vc->name = assign_name(vc, model);
348 vc->can_receive = can_receive;
349 vc->receive = receive;
350 vc->receive_iov = receive_iov;
351 vc->cleanup = cleanup;
352 vc->opaque = opaque;
353 vc->vlan = vlan;
355 vc->next = NULL;
356 pvc = &vlan->first_client;
357 while (*pvc != NULL)
358 pvc = &(*pvc)->next;
359 *pvc = vc;
360 return vc;
363 void qemu_del_vlan_client(VLANClientState *vc)
365 VLANClientState **pvc = &vc->vlan->first_client;
367 while (*pvc != NULL)
368 if (*pvc == vc) {
369 *pvc = vc->next;
370 if (vc->cleanup) {
371 vc->cleanup(vc);
373 free(vc->name);
374 free(vc->model);
375 qemu_free(vc);
376 break;
377 } else
378 pvc = &(*pvc)->next;
381 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
383 VLANClientState **pvc = &vlan->first_client;
385 while (*pvc != NULL)
386 if ((*pvc)->opaque == opaque)
387 return *pvc;
388 else
389 pvc = &(*pvc)->next;
391 return NULL;
394 int qemu_can_send_packet(VLANClientState *sender)
396 VLANState *vlan = sender->vlan;
397 VLANClientState *vc;
399 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
400 if (vc == sender) {
401 continue;
404 /* no can_receive() handler, they can always receive */
405 if (!vc->can_receive || vc->can_receive(vc)) {
406 return 1;
409 return 0;
412 static int
413 qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
415 VLANClientState *vc;
416 int ret = -1;
418 sender->vlan->delivering = 1;
420 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
421 ssize_t len;
423 if (vc == sender) {
424 continue;
427 if (vc->link_down) {
428 ret = size;
429 continue;
432 len = vc->receive(vc, buf, size);
434 ret = (ret >= 0) ? ret : len;
437 sender->vlan->delivering = 0;
439 return ret;
442 void qemu_purge_queued_packets(VLANClientState *vc)
444 VLANPacket **pp = &vc->vlan->send_queue;
446 while (*pp != NULL) {
447 VLANPacket *packet = *pp;
449 if (packet->sender == vc) {
450 *pp = packet->next;
451 qemu_free(packet);
452 } else {
453 pp = &packet->next;
458 void qemu_flush_queued_packets(VLANClientState *vc)
460 VLANPacket *packet;
462 while ((packet = vc->vlan->send_queue) != NULL) {
463 int ret;
465 vc->vlan->send_queue = packet->next;
467 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
468 if (ret == 0 && packet->sent_cb != NULL) {
469 packet->next = vc->vlan->send_queue;
470 vc->vlan->send_queue = packet;
471 break;
474 if (packet->sent_cb)
475 packet->sent_cb(packet->sender, ret);
477 qemu_free(packet);
481 static void qemu_enqueue_packet(VLANClientState *sender,
482 const uint8_t *buf, int size,
483 NetPacketSent *sent_cb)
485 VLANPacket *packet;
487 packet = qemu_malloc(sizeof(VLANPacket) + size);
488 packet->next = sender->vlan->send_queue;
489 packet->sender = sender;
490 packet->size = size;
491 packet->sent_cb = sent_cb;
492 memcpy(packet->data, buf, size);
493 sender->vlan->send_queue = packet;
496 ssize_t qemu_send_packet_async(VLANClientState *sender,
497 const uint8_t *buf, int size,
498 NetPacketSent *sent_cb)
500 int ret;
502 if (sender->link_down) {
503 return size;
506 #ifdef DEBUG_NET
507 printf("vlan %d send:\n", sender->vlan->id);
508 hex_dump(stdout, buf, size);
509 #endif
511 if (sender->vlan->delivering) {
512 qemu_enqueue_packet(sender, buf, size, NULL);
513 return size;
516 ret = qemu_deliver_packet(sender, buf, size);
517 if (ret == 0 && sent_cb != NULL) {
518 qemu_enqueue_packet(sender, buf, size, sent_cb);
519 return 0;
522 qemu_flush_queued_packets(sender);
524 return ret;
527 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
529 qemu_send_packet_async(vc, buf, size, NULL);
532 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
533 int iovcnt)
535 uint8_t buffer[4096];
536 size_t offset = 0;
537 int i;
539 for (i = 0; i < iovcnt; i++) {
540 size_t len;
542 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
543 memcpy(buffer + offset, iov[i].iov_base, len);
544 offset += len;
547 return vc->receive(vc, buffer, offset);
550 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
552 size_t offset = 0;
553 int i;
555 for (i = 0; i < iovcnt; i++)
556 offset += iov[i].iov_len;
557 return offset;
560 static int qemu_deliver_packet_iov(VLANClientState *sender,
561 const struct iovec *iov, int iovcnt)
563 VLANClientState *vc;
564 int ret = -1;
566 sender->vlan->delivering = 1;
568 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
569 ssize_t len;
571 if (vc == sender) {
572 continue;
575 if (vc->link_down) {
576 ret = calc_iov_length(iov, iovcnt);
577 continue;
580 if (vc->receive_iov) {
581 len = vc->receive_iov(vc, iov, iovcnt);
582 } else {
583 len = vc_sendv_compat(vc, iov, iovcnt);
586 ret = (ret >= 0) ? ret : len;
589 sender->vlan->delivering = 0;
591 return ret;
594 static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
595 const struct iovec *iov, int iovcnt,
596 NetPacketSent *sent_cb)
598 VLANPacket *packet;
599 size_t max_len = 0;
600 int i;
602 max_len = calc_iov_length(iov, iovcnt);
604 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
605 packet->next = sender->vlan->send_queue;
606 packet->sender = sender;
607 packet->sent_cb = sent_cb;
608 packet->size = 0;
610 for (i = 0; i < iovcnt; i++) {
611 size_t len = iov[i].iov_len;
613 memcpy(packet->data + packet->size, iov[i].iov_base, len);
614 packet->size += len;
617 sender->vlan->send_queue = packet;
619 return packet->size;
622 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
623 const struct iovec *iov, int iovcnt,
624 NetPacketSent *sent_cb)
626 int ret;
628 if (sender->link_down) {
629 return calc_iov_length(iov, iovcnt);
632 if (sender->vlan->delivering) {
633 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
636 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
637 if (ret == 0 && sent_cb != NULL) {
638 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
639 return 0;
642 qemu_flush_queued_packets(sender);
644 return ret;
647 ssize_t
648 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
650 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
653 static void config_error(Monitor *mon, const char *fmt, ...)
655 va_list ap;
657 va_start(ap, fmt);
658 if (mon) {
659 monitor_vprintf(mon, fmt, ap);
660 } else {
661 fprintf(stderr, "qemu: ");
662 vfprintf(stderr, fmt, ap);
663 exit(1);
665 va_end(ap);
668 #if defined(CONFIG_SLIRP)
670 /* slirp network adapter */
672 #define SLIRP_CFG_HOSTFWD 1
673 #define SLIRP_CFG_LEGACY 2
675 struct slirp_config_str {
676 struct slirp_config_str *next;
677 int flags;
678 char str[1024];
679 int legacy_format;
682 static int slirp_inited;
683 static struct slirp_config_str *slirp_configs;
684 const char *legacy_tftp_prefix;
685 const char *legacy_bootp_filename;
686 static VLANClientState *slirp_vc;
688 static void slirp_hostfwd(Monitor *mon, const char *redir_str,
689 int legacy_format);
690 static void slirp_guestfwd(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(const char *exported_dir, struct in_addr vserver_addr);
697 #endif
699 int slirp_can_output(void)
701 return !slirp_vc || qemu_can_send_packet(slirp_vc);
704 void slirp_output(const uint8_t *pkt, int pkt_len)
706 #ifdef DEBUG_SLIRP
707 printf("slirp output:\n");
708 hex_dump(stdout, pkt, pkt_len);
709 #endif
710 if (!slirp_vc)
711 return;
712 qemu_send_packet(slirp_vc, pkt, pkt_len);
715 int slirp_is_inited(void)
717 return slirp_inited;
720 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
722 #ifdef DEBUG_SLIRP
723 printf("slirp input:\n");
724 hex_dump(stdout, buf, size);
725 #endif
726 slirp_input(buf, size);
727 return size;
730 static int slirp_in_use;
732 static void net_slirp_cleanup(VLANClientState *vc)
734 slirp_in_use = 0;
737 static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
738 const char *name, int restricted,
739 const char *vnetwork, const char *vhost,
740 const char *vhostname, const char *tftp_export,
741 const char *bootfile, const char *vdhcp_start,
742 const char *vnameserver, const char *smb_export,
743 const char *vsmbserver)
745 if (slirp_in_use) {
746 /* slirp only supports a single instance so far */
747 return -1;
749 if (!slirp_inited) {
750 /* default settings according to historic slirp */
751 struct in_addr net = { .s_addr = htonl(0x0a000000) }; /* 10.0.0.0 */
752 struct in_addr mask = { .s_addr = htonl(0xff000000) }; /* 255.0.0.0 */
753 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
754 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
755 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
756 #ifndef _WIN32
757 struct in_addr smbsrv = { .s_addr = 0 };
758 #endif
759 char buf[20];
760 uint32_t addr;
761 int shift;
762 char *end;
764 if (!tftp_export) {
765 tftp_export = legacy_tftp_prefix;
767 if (!bootfile) {
768 bootfile = legacy_bootp_filename;
771 if (vnetwork) {
772 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
773 if (!inet_aton(vnetwork, &net)) {
774 return -1;
776 addr = ntohl(net.s_addr);
777 if (!(addr & 0x80000000)) {
778 mask.s_addr = htonl(0xff000000); /* class A */
779 } else if ((addr & 0xfff00000) == 0xac100000) {
780 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
781 } else if ((addr & 0xc0000000) == 0x80000000) {
782 mask.s_addr = htonl(0xffff0000); /* class B */
783 } else if ((addr & 0xffff0000) == 0xc0a80000) {
784 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
785 } else if ((addr & 0xffff0000) == 0xc6120000) {
786 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
787 } else if ((addr & 0xe0000000) == 0xe0000000) {
788 mask.s_addr = htonl(0xffffff00); /* class C */
789 } else {
790 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
792 } else {
793 if (!inet_aton(buf, &net)) {
794 return -1;
796 shift = strtol(vnetwork, &end, 10);
797 if (*end != '\0') {
798 if (!inet_aton(vnetwork, &mask)) {
799 return -1;
801 } else if (shift < 4 || shift > 32) {
802 return -1;
803 } else {
804 mask.s_addr = htonl(0xffffffff << (32 - shift));
807 net.s_addr &= mask.s_addr;
808 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
809 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
810 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
813 if (vhost && !inet_aton(vhost, &host)) {
814 return -1;
816 if ((host.s_addr & mask.s_addr) != net.s_addr) {
817 return -1;
820 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
821 return -1;
823 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
824 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
825 return -1;
828 if (vnameserver && !inet_aton(vnameserver, &dns)) {
829 return -1;
831 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
832 dns.s_addr == host.s_addr) {
833 return -1;
836 #ifndef _WIN32
837 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
838 return -1;
840 #endif
842 slirp_init(restricted, net, mask, host, vhostname, tftp_export,
843 bootfile, dhcp, dns);
844 slirp_inited = 1;
846 while (slirp_configs) {
847 struct slirp_config_str *config = slirp_configs;
849 if (config->flags & SLIRP_CFG_HOSTFWD) {
850 slirp_hostfwd(mon, config->str,
851 config->flags & SLIRP_CFG_LEGACY);
852 } else {
853 slirp_guestfwd(mon, config->str,
854 config->flags & SLIRP_CFG_LEGACY);
856 slirp_configs = config->next;
857 qemu_free(config);
859 #ifndef _WIN32
860 if (!smb_export) {
861 smb_export = legacy_smb_export;
863 if (smb_export) {
864 slirp_smb(smb_export, smbsrv);
866 #endif
869 slirp_vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive,
870 NULL, net_slirp_cleanup, NULL);
871 slirp_vc->info_str[0] = '\0';
872 slirp_in_use = 1;
873 return 0;
876 void net_slirp_hostfwd_remove(Monitor *mon, const char *src_str)
878 struct in_addr host_addr = { .s_addr = INADDR_ANY };
879 int host_port;
880 char buf[256] = "";
881 const char *p = src_str;
882 int is_udp = 0;
883 int err;
885 if (!slirp_inited) {
886 monitor_printf(mon, "user mode network stack not in use\n");
887 return;
890 if (!src_str || !src_str[0])
891 goto fail_syntax;
893 get_str_sep(buf, sizeof(buf), &p, ':');
895 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
896 is_udp = 0;
897 } else if (!strcmp(buf, "udp")) {
898 is_udp = 1;
899 } else {
900 goto fail_syntax;
903 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
904 goto fail_syntax;
906 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
907 goto fail_syntax;
910 host_port = atoi(p);
912 err = slirp_remove_hostfwd(is_udp, host_addr, host_port);
914 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
915 err ? "removed" : "not found");
916 return;
918 fail_syntax:
919 monitor_printf(mon, "invalid format\n");
922 static void slirp_hostfwd(Monitor *mon, const char *redir_str,
923 int legacy_format)
925 struct in_addr host_addr = { .s_addr = INADDR_ANY };
926 struct in_addr guest_addr = { .s_addr = 0 };
927 int host_port, guest_port;
928 const char *p;
929 char buf[256];
930 int is_udp;
931 char *end;
933 p = redir_str;
934 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
935 goto fail_syntax;
937 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
938 is_udp = 0;
939 } else if (!strcmp(buf, "udp")) {
940 is_udp = 1;
941 } else {
942 goto fail_syntax;
945 if (!legacy_format) {
946 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
947 goto fail_syntax;
949 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
950 goto fail_syntax;
954 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
955 goto fail_syntax;
957 host_port = strtol(buf, &end, 0);
958 if (*end != '\0' || host_port < 1 || host_port > 65535) {
959 goto fail_syntax;
962 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
963 goto fail_syntax;
965 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
966 goto fail_syntax;
969 guest_port = strtol(p, &end, 0);
970 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
971 goto fail_syntax;
974 if (slirp_add_hostfwd(is_udp, host_addr, host_port,
975 guest_addr, guest_port) < 0) {
976 config_error(mon, "could not set up host forwarding rule '%s'\n",
977 redir_str);
979 return;
981 fail_syntax:
982 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
985 void net_slirp_hostfwd_add(Monitor *mon, const char *redir_str)
987 if (!slirp_inited) {
988 monitor_printf(mon, "user mode network stack not in use\n");
989 return;
992 slirp_hostfwd(mon, redir_str, 0);
995 void net_slirp_redir(const char *redir_str)
997 struct slirp_config_str *config;
999 if (!slirp_inited) {
1000 config = qemu_malloc(sizeof(*config));
1001 pstrcpy(config->str, sizeof(config->str), redir_str);
1002 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
1003 config->next = slirp_configs;
1004 slirp_configs = config;
1005 return;
1008 slirp_hostfwd(NULL, redir_str, 1);
1011 #ifndef _WIN32
1013 static char smb_dir[1024];
1015 static void erase_dir(char *dir_name)
1017 DIR *d;
1018 struct dirent *de;
1019 char filename[1024];
1021 /* erase all the files in the directory */
1022 if ((d = opendir(dir_name)) != NULL) {
1023 for(;;) {
1024 de = readdir(d);
1025 if (!de)
1026 break;
1027 if (strcmp(de->d_name, ".") != 0 &&
1028 strcmp(de->d_name, "..") != 0) {
1029 snprintf(filename, sizeof(filename), "%s/%s",
1030 smb_dir, de->d_name);
1031 if (unlink(filename) != 0) /* is it a directory? */
1032 erase_dir(filename);
1035 closedir(d);
1036 rmdir(dir_name);
1040 /* automatic user mode samba server configuration */
1041 static void smb_exit(void)
1043 erase_dir(smb_dir);
1046 static void slirp_smb(const char *exported_dir, struct in_addr vserver_addr)
1048 char smb_conf[1024];
1049 char smb_cmdline[1024];
1050 FILE *f;
1052 /* XXX: better tmp dir construction */
1053 snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%ld", (long)getpid());
1054 if (mkdir(smb_dir, 0700) < 0) {
1055 fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
1056 exit(1);
1058 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
1060 f = fopen(smb_conf, "w");
1061 if (!f) {
1062 fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
1063 exit(1);
1065 fprintf(f,
1066 "[global]\n"
1067 "private dir=%s\n"
1068 "smb ports=0\n"
1069 "socket address=127.0.0.1\n"
1070 "pid directory=%s\n"
1071 "lock directory=%s\n"
1072 "log file=%s/log.smbd\n"
1073 "smb passwd file=%s/smbpasswd\n"
1074 "security = share\n"
1075 "[qemu]\n"
1076 "path=%s\n"
1077 "read only=no\n"
1078 "guest ok=yes\n",
1079 smb_dir,
1080 smb_dir,
1081 smb_dir,
1082 smb_dir,
1083 smb_dir,
1084 exported_dir
1086 fclose(f);
1087 atexit(smb_exit);
1089 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1090 SMBD_COMMAND, smb_conf);
1092 if (slirp_add_exec(0, smb_cmdline, vserver_addr, 139) < 0) {
1093 fprintf(stderr, "conflicting/invalid smbserver address\n");
1094 exit(1);
1098 /* automatic user mode samba server configuration (legacy interface) */
1099 void net_slirp_smb(const char *exported_dir)
1101 struct in_addr vserver_addr = { .s_addr = 0 };
1103 if (legacy_smb_export) {
1104 fprintf(stderr, "-smb given twice\n");
1105 exit(1);
1107 legacy_smb_export = exported_dir;
1108 if (slirp_inited) {
1109 slirp_smb(exported_dir, vserver_addr);
1113 #endif /* !defined(_WIN32) */
1115 void do_info_slirp(Monitor *mon)
1117 slirp_stats();
1120 struct GuestFwd {
1121 CharDriverState *hd;
1122 struct in_addr server;
1123 int port;
1126 static int guestfwd_can_read(void *opaque)
1128 struct GuestFwd *fwd = opaque;
1129 return slirp_socket_can_recv(fwd->server, fwd->port);
1132 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1134 struct GuestFwd *fwd = opaque;
1135 slirp_socket_recv(fwd->server, fwd->port, buf, size);
1138 static void slirp_guestfwd(Monitor *mon, const char *config_str,
1139 int legacy_format)
1141 struct in_addr server = { .s_addr = 0 };
1142 struct GuestFwd *fwd;
1143 const char *p;
1144 char buf[128];
1145 char *end;
1146 int port;
1148 p = config_str;
1149 if (legacy_format) {
1150 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1151 goto fail_syntax;
1153 } else {
1154 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1155 goto fail_syntax;
1157 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1158 goto fail_syntax;
1160 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1161 goto fail_syntax;
1163 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1164 goto fail_syntax;
1166 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1167 goto fail_syntax;
1170 port = strtol(buf, &end, 10);
1171 if (*end != '\0' || port < 1 || port > 65535) {
1172 goto fail_syntax;
1175 fwd = qemu_malloc(sizeof(struct GuestFwd));
1176 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1177 fwd->hd = qemu_chr_open(buf, p, NULL);
1178 if (!fwd->hd) {
1179 config_error(mon, "could not open guest forwarding device '%s'\n",
1180 buf);
1181 qemu_free(fwd);
1182 return;
1184 fwd->server = server;
1185 fwd->port = port;
1187 if (slirp_add_exec(3, fwd->hd, server, port) < 0) {
1188 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1189 "rule '%s'\n", config_str);
1190 qemu_free(fwd);
1191 return;
1193 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1194 NULL, fwd);
1195 return;
1197 fail_syntax:
1198 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
1201 void do_info_usernet(Monitor *mon)
1203 monitor_printf(mon, "VLAN %d (%s):\n", slirp_vc->vlan->id, slirp_vc->name);
1204 slirp_connection_info(mon);
1207 #endif /* CONFIG_SLIRP */
1209 #if !defined(_WIN32)
1211 typedef struct TAPState {
1212 VLANClientState *vc;
1213 int fd;
1214 char down_script[1024];
1215 char down_script_arg[128];
1216 uint8_t buf[4096];
1217 unsigned int read_poll : 1;
1218 unsigned int write_poll : 1;
1219 } TAPState;
1221 static int launch_script(const char *setup_script, const char *ifname, int fd);
1223 static int tap_can_send(void *opaque);
1224 static void tap_send(void *opaque);
1225 static void tap_writable(void *opaque);
1227 static void tap_update_fd_handler(TAPState *s)
1229 qemu_set_fd_handler2(s->fd,
1230 s->read_poll ? tap_can_send : NULL,
1231 s->read_poll ? tap_send : NULL,
1232 s->write_poll ? tap_writable : NULL,
1236 static void tap_read_poll(TAPState *s, int enable)
1238 s->read_poll = !!enable;
1239 tap_update_fd_handler(s);
1242 static void tap_write_poll(TAPState *s, int enable)
1244 s->write_poll = !!enable;
1245 tap_update_fd_handler(s);
1248 static void tap_writable(void *opaque)
1250 TAPState *s = opaque;
1252 tap_write_poll(s, 0);
1254 qemu_flush_queued_packets(s->vc);
1257 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1258 int iovcnt)
1260 TAPState *s = vc->opaque;
1261 ssize_t len;
1263 do {
1264 len = writev(s->fd, iov, iovcnt);
1265 } while (len == -1 && errno == EINTR);
1267 if (len == -1 && errno == EAGAIN) {
1268 tap_write_poll(s, 1);
1269 return 0;
1272 return len;
1275 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1277 TAPState *s = vc->opaque;
1278 ssize_t len;
1280 do {
1281 len = write(s->fd, buf, size);
1282 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1284 return len;
1287 static int tap_can_send(void *opaque)
1289 TAPState *s = opaque;
1291 return qemu_can_send_packet(s->vc);
1294 #ifdef __sun__
1295 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1297 struct strbuf sbuf;
1298 int f = 0;
1300 sbuf.maxlen = maxlen;
1301 sbuf.buf = (char *)buf;
1303 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1305 #else
1306 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1308 return read(tapfd, buf, maxlen);
1310 #endif
1312 static void tap_send_completed(VLANClientState *vc, ssize_t len)
1314 TAPState *s = vc->opaque;
1315 tap_read_poll(s, 1);
1318 static void tap_send(void *opaque)
1320 TAPState *s = opaque;
1321 int size;
1323 do {
1324 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1325 if (size <= 0) {
1326 break;
1329 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1330 if (size == 0) {
1331 tap_read_poll(s, 0);
1333 } while (size > 0);
1336 static void tap_set_sndbuf(TAPState *s, int sndbuf, Monitor *mon)
1338 #ifdef TUNSETSNDBUF
1339 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1) {
1340 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1341 strerror(errno));
1343 #else
1344 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1345 #endif
1348 static void tap_cleanup(VLANClientState *vc)
1350 TAPState *s = vc->opaque;
1352 qemu_purge_queued_packets(vc);
1354 if (s->down_script[0])
1355 launch_script(s->down_script, s->down_script_arg, s->fd);
1357 tap_read_poll(s, 0);
1358 tap_write_poll(s, 0);
1359 close(s->fd);
1360 qemu_free(s);
1363 /* fd support */
1365 static TAPState *net_tap_fd_init(VLANState *vlan,
1366 const char *model,
1367 const char *name,
1368 int fd)
1370 TAPState *s;
1372 s = qemu_mallocz(sizeof(TAPState));
1373 s->fd = fd;
1374 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1375 tap_receive_iov, tap_cleanup, s);
1376 tap_read_poll(s, 1);
1377 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
1378 return s;
1381 #if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
1382 static int tap_open(char *ifname, int ifname_size)
1384 int fd;
1385 char *dev;
1386 struct stat s;
1388 TFR(fd = open("/dev/tap", O_RDWR));
1389 if (fd < 0) {
1390 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1391 return -1;
1394 fstat(fd, &s);
1395 dev = devname(s.st_rdev, S_IFCHR);
1396 pstrcpy(ifname, ifname_size, dev);
1398 fcntl(fd, F_SETFL, O_NONBLOCK);
1399 return fd;
1401 #elif defined(__sun__)
1402 #define TUNNEWPPA (('T'<<16) | 0x0001)
1404 * Allocate TAP device, returns opened fd.
1405 * Stores dev name in the first arg(must be large enough).
1407 static int tap_alloc(char *dev, size_t dev_size)
1409 int tap_fd, if_fd, ppa = -1;
1410 static int ip_fd = 0;
1411 char *ptr;
1413 static int arp_fd = 0;
1414 int ip_muxid, arp_muxid;
1415 struct strioctl strioc_if, strioc_ppa;
1416 int link_type = I_PLINK;;
1417 struct lifreq ifr;
1418 char actual_name[32] = "";
1420 memset(&ifr, 0x0, sizeof(ifr));
1422 if( *dev ){
1423 ptr = dev;
1424 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1425 ppa = atoi(ptr);
1428 /* Check if IP device was opened */
1429 if( ip_fd )
1430 close(ip_fd);
1432 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1433 if (ip_fd < 0) {
1434 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1435 return -1;
1438 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1439 if (tap_fd < 0) {
1440 syslog(LOG_ERR, "Can't open /dev/tap");
1441 return -1;
1444 /* Assign a new PPA and get its unit number. */
1445 strioc_ppa.ic_cmd = TUNNEWPPA;
1446 strioc_ppa.ic_timout = 0;
1447 strioc_ppa.ic_len = sizeof(ppa);
1448 strioc_ppa.ic_dp = (char *)&ppa;
1449 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1450 syslog (LOG_ERR, "Can't assign new interface");
1452 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1453 if (if_fd < 0) {
1454 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1455 return -1;
1457 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1458 syslog(LOG_ERR, "Can't push IP module");
1459 return -1;
1462 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1463 syslog(LOG_ERR, "Can't get flags\n");
1465 snprintf (actual_name, 32, "tap%d", ppa);
1466 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1468 ifr.lifr_ppa = ppa;
1469 /* Assign ppa according to the unit number returned by tun device */
1471 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1472 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1473 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1474 syslog (LOG_ERR, "Can't get flags\n");
1475 /* Push arp module to if_fd */
1476 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1477 syslog (LOG_ERR, "Can't push ARP module (2)");
1479 /* Push arp module to ip_fd */
1480 if (ioctl (ip_fd, I_POP, NULL) < 0)
1481 syslog (LOG_ERR, "I_POP failed\n");
1482 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1483 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1484 /* Open arp_fd */
1485 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1486 if (arp_fd < 0)
1487 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1489 /* Set ifname to arp */
1490 strioc_if.ic_cmd = SIOCSLIFNAME;
1491 strioc_if.ic_timout = 0;
1492 strioc_if.ic_len = sizeof(ifr);
1493 strioc_if.ic_dp = (char *)&ifr;
1494 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1495 syslog (LOG_ERR, "Can't set ifname to arp\n");
1498 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1499 syslog(LOG_ERR, "Can't link TAP device to IP");
1500 return -1;
1503 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1504 syslog (LOG_ERR, "Can't link TAP device to ARP");
1506 close (if_fd);
1508 memset(&ifr, 0x0, sizeof(ifr));
1509 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1510 ifr.lifr_ip_muxid = ip_muxid;
1511 ifr.lifr_arp_muxid = arp_muxid;
1513 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1515 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1516 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1517 syslog (LOG_ERR, "Can't set multiplexor id");
1520 snprintf(dev, dev_size, "tap%d", ppa);
1521 return tap_fd;
1524 static int tap_open(char *ifname, int ifname_size)
1526 char dev[10]="";
1527 int fd;
1528 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1529 fprintf(stderr, "Cannot allocate TAP device\n");
1530 return -1;
1532 pstrcpy(ifname, ifname_size, dev);
1533 fcntl(fd, F_SETFL, O_NONBLOCK);
1534 return fd;
1536 #elif defined (_AIX)
1537 static int tap_open(char *ifname, int ifname_size)
1539 fprintf (stderr, "no tap on AIX\n");
1540 return -1;
1542 #else
1543 static int tap_open(char *ifname, int ifname_size)
1545 struct ifreq ifr;
1546 int fd, ret;
1548 TFR(fd = open("/dev/net/tun", O_RDWR));
1549 if (fd < 0) {
1550 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1551 return -1;
1553 memset(&ifr, 0, sizeof(ifr));
1554 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1555 if (ifname[0] != '\0')
1556 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1557 else
1558 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1559 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1560 if (ret != 0) {
1561 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1562 close(fd);
1563 return -1;
1565 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1566 fcntl(fd, F_SETFL, O_NONBLOCK);
1567 return fd;
1569 #endif
1571 static int launch_script(const char *setup_script, const char *ifname, int fd)
1573 sigset_t oldmask, mask;
1574 int pid, status;
1575 char *args[3];
1576 char **parg;
1578 sigemptyset(&mask);
1579 sigaddset(&mask, SIGCHLD);
1580 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1582 /* try to launch network script */
1583 pid = fork();
1584 if (pid == 0) {
1585 int open_max = sysconf(_SC_OPEN_MAX), i;
1587 for (i = 0; i < open_max; i++) {
1588 if (i != STDIN_FILENO &&
1589 i != STDOUT_FILENO &&
1590 i != STDERR_FILENO &&
1591 i != fd) {
1592 close(i);
1595 parg = args;
1596 *parg++ = (char *)setup_script;
1597 *parg++ = (char *)ifname;
1598 *parg++ = NULL;
1599 execv(setup_script, args);
1600 _exit(1);
1601 } else if (pid > 0) {
1602 while (waitpid(pid, &status, 0) != pid) {
1603 /* loop */
1605 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1607 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1608 return 0;
1611 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1612 return -1;
1615 static TAPState *net_tap_init(VLANState *vlan, const char *model,
1616 const char *name, const char *ifname1,
1617 const char *setup_script, const char *down_script)
1619 TAPState *s;
1620 int fd;
1621 char ifname[128];
1623 if (ifname1 != NULL)
1624 pstrcpy(ifname, sizeof(ifname), ifname1);
1625 else
1626 ifname[0] = '\0';
1627 TFR(fd = tap_open(ifname, sizeof(ifname)));
1628 if (fd < 0)
1629 return NULL;
1631 if (!setup_script || !strcmp(setup_script, "no"))
1632 setup_script = "";
1633 if (setup_script[0] != '\0' &&
1634 launch_script(setup_script, ifname, fd)) {
1635 return NULL;
1637 s = net_tap_fd_init(vlan, model, name, fd);
1638 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1639 "ifname=%s,script=%s,downscript=%s",
1640 ifname, setup_script, down_script);
1641 if (down_script && strcmp(down_script, "no")) {
1642 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1643 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1645 return s;
1648 #endif /* !_WIN32 */
1650 #if defined(CONFIG_VDE)
1651 typedef struct VDEState {
1652 VLANClientState *vc;
1653 VDECONN *vde;
1654 } VDEState;
1656 static void vde_to_qemu(void *opaque)
1658 VDEState *s = opaque;
1659 uint8_t buf[4096];
1660 int size;
1662 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1663 if (size > 0) {
1664 qemu_send_packet(s->vc, buf, size);
1668 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1670 VDEState *s = vc->opaque;
1671 ssize_t ret;
1673 do {
1674 ret = vde_send(s->vde, (const char *)buf, size, 0);
1675 } while (ret < 0 && errno == EINTR);
1677 return ret;
1680 static void vde_cleanup(VLANClientState *vc)
1682 VDEState *s = vc->opaque;
1683 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1684 vde_close(s->vde);
1685 qemu_free(s);
1688 static int net_vde_init(VLANState *vlan, const char *model,
1689 const char *name, const char *sock,
1690 int port, const char *group, int mode)
1692 VDEState *s;
1693 char *init_group = strlen(group) ? (char *)group : NULL;
1694 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1696 struct vde_open_args args = {
1697 .port = port,
1698 .group = init_group,
1699 .mode = mode,
1702 s = qemu_mallocz(sizeof(VDEState));
1703 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1704 if (!s->vde){
1705 free(s);
1706 return -1;
1708 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
1709 NULL, vde_cleanup, s);
1710 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1711 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1712 sock, vde_datafd(s->vde));
1713 return 0;
1715 #endif
1717 /* network connection */
1718 typedef struct NetSocketState {
1719 VLANClientState *vc;
1720 int fd;
1721 int state; /* 0 = getting length, 1 = getting data */
1722 unsigned int index;
1723 unsigned int packet_len;
1724 uint8_t buf[4096];
1725 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1726 } NetSocketState;
1728 typedef struct NetSocketListenState {
1729 VLANState *vlan;
1730 char *model;
1731 char *name;
1732 int fd;
1733 } NetSocketListenState;
1735 /* XXX: we consider we can send the whole packet without blocking */
1736 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1738 NetSocketState *s = vc->opaque;
1739 uint32_t len;
1740 len = htonl(size);
1742 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1743 return send_all(s->fd, buf, size);
1746 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1748 NetSocketState *s = vc->opaque;
1750 return sendto(s->fd, (const void *)buf, size, 0,
1751 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1754 static void net_socket_send(void *opaque)
1756 NetSocketState *s = opaque;
1757 int size, err;
1758 unsigned l;
1759 uint8_t buf1[4096];
1760 const uint8_t *buf;
1762 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1763 if (size < 0) {
1764 err = socket_error();
1765 if (err != EWOULDBLOCK)
1766 goto eoc;
1767 } else if (size == 0) {
1768 /* end of connection */
1769 eoc:
1770 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1771 closesocket(s->fd);
1772 return;
1774 buf = buf1;
1775 while (size > 0) {
1776 /* reassemble a packet from the network */
1777 switch(s->state) {
1778 case 0:
1779 l = 4 - s->index;
1780 if (l > size)
1781 l = size;
1782 memcpy(s->buf + s->index, buf, l);
1783 buf += l;
1784 size -= l;
1785 s->index += l;
1786 if (s->index == 4) {
1787 /* got length */
1788 s->packet_len = ntohl(*(uint32_t *)s->buf);
1789 s->index = 0;
1790 s->state = 1;
1792 break;
1793 case 1:
1794 l = s->packet_len - s->index;
1795 if (l > size)
1796 l = size;
1797 if (s->index + l <= sizeof(s->buf)) {
1798 memcpy(s->buf + s->index, buf, l);
1799 } else {
1800 fprintf(stderr, "serious error: oversized packet received,"
1801 "connection terminated.\n");
1802 s->state = 0;
1803 goto eoc;
1806 s->index += l;
1807 buf += l;
1808 size -= l;
1809 if (s->index >= s->packet_len) {
1810 qemu_send_packet(s->vc, s->buf, s->packet_len);
1811 s->index = 0;
1812 s->state = 0;
1814 break;
1819 static void net_socket_send_dgram(void *opaque)
1821 NetSocketState *s = opaque;
1822 int size;
1824 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1825 if (size < 0)
1826 return;
1827 if (size == 0) {
1828 /* end of connection */
1829 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1830 return;
1832 qemu_send_packet(s->vc, s->buf, size);
1835 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1837 struct ip_mreq imr;
1838 int fd;
1839 int val, ret;
1840 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1841 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1842 inet_ntoa(mcastaddr->sin_addr),
1843 (int)ntohl(mcastaddr->sin_addr.s_addr));
1844 return -1;
1847 fd = socket(PF_INET, SOCK_DGRAM, 0);
1848 if (fd < 0) {
1849 perror("socket(PF_INET, SOCK_DGRAM)");
1850 return -1;
1853 val = 1;
1854 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1855 (const char *)&val, sizeof(val));
1856 if (ret < 0) {
1857 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1858 goto fail;
1861 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1862 if (ret < 0) {
1863 perror("bind");
1864 goto fail;
1867 /* Add host to multicast group */
1868 imr.imr_multiaddr = mcastaddr->sin_addr;
1869 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1871 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1872 (const char *)&imr, sizeof(struct ip_mreq));
1873 if (ret < 0) {
1874 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1875 goto fail;
1878 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1879 val = 1;
1880 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1881 (const char *)&val, sizeof(val));
1882 if (ret < 0) {
1883 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1884 goto fail;
1887 socket_set_nonblock(fd);
1888 return fd;
1889 fail:
1890 if (fd >= 0)
1891 closesocket(fd);
1892 return -1;
1895 static void net_socket_cleanup(VLANClientState *vc)
1897 NetSocketState *s = vc->opaque;
1898 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1899 close(s->fd);
1900 qemu_free(s);
1903 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1904 const char *model,
1905 const char *name,
1906 int fd, int is_connected)
1908 struct sockaddr_in saddr;
1909 int newfd;
1910 socklen_t saddr_len;
1911 NetSocketState *s;
1913 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1914 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1915 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1918 if (is_connected) {
1919 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1920 /* must be bound */
1921 if (saddr.sin_addr.s_addr==0) {
1922 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1923 fd);
1924 return NULL;
1926 /* clone dgram socket */
1927 newfd = net_socket_mcast_create(&saddr);
1928 if (newfd < 0) {
1929 /* error already reported by net_socket_mcast_create() */
1930 close(fd);
1931 return NULL;
1933 /* clone newfd to fd, close newfd */
1934 dup2(newfd, fd);
1935 close(newfd);
1937 } else {
1938 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1939 fd, strerror(errno));
1940 return NULL;
1944 s = qemu_mallocz(sizeof(NetSocketState));
1945 s->fd = fd;
1947 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
1948 NULL, net_socket_cleanup, s);
1949 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1951 /* mcast: save bound address as dst */
1952 if (is_connected) s->dgram_dst=saddr;
1954 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1955 "socket: fd=%d (%s mcast=%s:%d)",
1956 fd, is_connected? "cloned" : "",
1957 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1958 return s;
1961 static void net_socket_connect(void *opaque)
1963 NetSocketState *s = opaque;
1964 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1967 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
1968 const char *model,
1969 const char *name,
1970 int fd, int is_connected)
1972 NetSocketState *s;
1973 s = qemu_mallocz(sizeof(NetSocketState));
1974 s->fd = fd;
1975 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
1976 NULL, net_socket_cleanup, s);
1977 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1978 "socket: fd=%d", fd);
1979 if (is_connected) {
1980 net_socket_connect(s);
1981 } else {
1982 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1984 return s;
1987 static NetSocketState *net_socket_fd_init(VLANState *vlan,
1988 const char *model, const char *name,
1989 int fd, int is_connected)
1991 int so_type=-1, optlen=sizeof(so_type);
1993 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
1994 (socklen_t *)&optlen)< 0) {
1995 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
1996 return NULL;
1998 switch(so_type) {
1999 case SOCK_DGRAM:
2000 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
2001 case SOCK_STREAM:
2002 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2003 default:
2004 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2005 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
2006 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2008 return NULL;
2011 static void net_socket_accept(void *opaque)
2013 NetSocketListenState *s = opaque;
2014 NetSocketState *s1;
2015 struct sockaddr_in saddr;
2016 socklen_t len;
2017 int fd;
2019 for(;;) {
2020 len = sizeof(saddr);
2021 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2022 if (fd < 0 && errno != EINTR) {
2023 return;
2024 } else if (fd >= 0) {
2025 break;
2028 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
2029 if (!s1) {
2030 closesocket(fd);
2031 } else {
2032 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2033 "socket: connection from %s:%d",
2034 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2038 static int net_socket_listen_init(VLANState *vlan,
2039 const char *model,
2040 const char *name,
2041 const char *host_str)
2043 NetSocketListenState *s;
2044 int fd, val, ret;
2045 struct sockaddr_in saddr;
2047 if (parse_host_port(&saddr, host_str) < 0)
2048 return -1;
2050 s = qemu_mallocz(sizeof(NetSocketListenState));
2052 fd = socket(PF_INET, SOCK_STREAM, 0);
2053 if (fd < 0) {
2054 perror("socket");
2055 return -1;
2057 socket_set_nonblock(fd);
2059 /* allow fast reuse */
2060 val = 1;
2061 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2063 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2064 if (ret < 0) {
2065 perror("bind");
2066 return -1;
2068 ret = listen(fd, 0);
2069 if (ret < 0) {
2070 perror("listen");
2071 return -1;
2073 s->vlan = vlan;
2074 s->model = strdup(model);
2075 s->name = name ? strdup(name) : NULL;
2076 s->fd = fd;
2077 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2078 return 0;
2081 static int net_socket_connect_init(VLANState *vlan,
2082 const char *model,
2083 const char *name,
2084 const char *host_str)
2086 NetSocketState *s;
2087 int fd, connected, ret, err;
2088 struct sockaddr_in saddr;
2090 if (parse_host_port(&saddr, host_str) < 0)
2091 return -1;
2093 fd = socket(PF_INET, SOCK_STREAM, 0);
2094 if (fd < 0) {
2095 perror("socket");
2096 return -1;
2098 socket_set_nonblock(fd);
2100 connected = 0;
2101 for(;;) {
2102 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2103 if (ret < 0) {
2104 err = socket_error();
2105 if (err == EINTR || err == EWOULDBLOCK) {
2106 } else if (err == EINPROGRESS) {
2107 break;
2108 #ifdef _WIN32
2109 } else if (err == WSAEALREADY) {
2110 break;
2111 #endif
2112 } else {
2113 perror("connect");
2114 closesocket(fd);
2115 return -1;
2117 } else {
2118 connected = 1;
2119 break;
2122 s = net_socket_fd_init(vlan, model, name, fd, connected);
2123 if (!s)
2124 return -1;
2125 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2126 "socket: connect to %s:%d",
2127 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2128 return 0;
2131 static int net_socket_mcast_init(VLANState *vlan,
2132 const char *model,
2133 const char *name,
2134 const char *host_str)
2136 NetSocketState *s;
2137 int fd;
2138 struct sockaddr_in saddr;
2140 if (parse_host_port(&saddr, host_str) < 0)
2141 return -1;
2144 fd = net_socket_mcast_create(&saddr);
2145 if (fd < 0)
2146 return -1;
2148 s = net_socket_fd_init(vlan, model, name, fd, 0);
2149 if (!s)
2150 return -1;
2152 s->dgram_dst = saddr;
2154 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2155 "socket: mcast=%s:%d",
2156 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2157 return 0;
2161 typedef struct DumpState {
2162 VLANClientState *pcap_vc;
2163 int fd;
2164 int pcap_caplen;
2165 } DumpState;
2167 #define PCAP_MAGIC 0xa1b2c3d4
2169 struct pcap_file_hdr {
2170 uint32_t magic;
2171 uint16_t version_major;
2172 uint16_t version_minor;
2173 int32_t thiszone;
2174 uint32_t sigfigs;
2175 uint32_t snaplen;
2176 uint32_t linktype;
2179 struct pcap_sf_pkthdr {
2180 struct {
2181 int32_t tv_sec;
2182 int32_t tv_usec;
2183 } ts;
2184 uint32_t caplen;
2185 uint32_t len;
2188 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
2190 DumpState *s = vc->opaque;
2191 struct pcap_sf_pkthdr hdr;
2192 int64_t ts;
2193 int caplen;
2195 /* Early return in case of previous error. */
2196 if (s->fd < 0) {
2197 return size;
2200 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
2201 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2203 hdr.ts.tv_sec = ts / 1000000;
2204 hdr.ts.tv_usec = ts % 1000000;
2205 hdr.caplen = caplen;
2206 hdr.len = size;
2207 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2208 write(s->fd, buf, caplen) != caplen) {
2209 qemu_log("-net dump write error - stop dump\n");
2210 close(s->fd);
2211 s->fd = -1;
2214 return size;
2217 static void net_dump_cleanup(VLANClientState *vc)
2219 DumpState *s = vc->opaque;
2221 close(s->fd);
2222 qemu_free(s);
2225 static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
2226 const char *name, const char *filename, int len)
2228 struct pcap_file_hdr hdr;
2229 DumpState *s;
2231 s = qemu_malloc(sizeof(DumpState));
2233 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
2234 if (s->fd < 0) {
2235 config_error(mon, "-net dump: can't open %s\n", filename);
2236 return -1;
2239 s->pcap_caplen = len;
2241 hdr.magic = PCAP_MAGIC;
2242 hdr.version_major = 2;
2243 hdr.version_minor = 4;
2244 hdr.thiszone = 0;
2245 hdr.sigfigs = 0;
2246 hdr.snaplen = s->pcap_caplen;
2247 hdr.linktype = 1;
2249 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2250 config_error(mon, "-net dump write error: %s\n", strerror(errno));
2251 close(s->fd);
2252 qemu_free(s);
2253 return -1;
2256 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
2257 net_dump_cleanup, s);
2258 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2259 "dump to %s (len=%d)", filename, len);
2260 return 0;
2263 /* find or alloc a new VLAN */
2264 VLANState *qemu_find_vlan(int id)
2266 VLANState **pvlan, *vlan;
2267 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2268 if (vlan->id == id)
2269 return vlan;
2271 vlan = qemu_mallocz(sizeof(VLANState));
2272 vlan->id = id;
2273 vlan->next = NULL;
2274 pvlan = &first_vlan;
2275 while (*pvlan != NULL)
2276 pvlan = &(*pvlan)->next;
2277 *pvlan = vlan;
2278 return vlan;
2281 static int nic_get_free_idx(void)
2283 int index;
2285 for (index = 0; index < MAX_NICS; index++)
2286 if (!nd_table[index].used)
2287 return index;
2288 return -1;
2291 void qemu_check_nic_model(NICInfo *nd, const char *model)
2293 const char *models[2];
2295 models[0] = model;
2296 models[1] = NULL;
2298 qemu_check_nic_model_list(nd, models, model);
2301 void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2302 const char *default_model)
2304 int i, exit_status = 0;
2306 if (!nd->model)
2307 nd->model = strdup(default_model);
2309 if (strcmp(nd->model, "?") != 0) {
2310 for (i = 0 ; models[i]; i++)
2311 if (strcmp(nd->model, models[i]) == 0)
2312 return;
2314 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2315 exit_status = 1;
2318 fprintf(stderr, "qemu: Supported NIC models: ");
2319 for (i = 0 ; models[i]; i++)
2320 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2322 exit(exit_status);
2325 int net_client_init(Monitor *mon, const char *device, const char *p)
2327 char buf[1024];
2328 int vlan_id, ret;
2329 VLANState *vlan;
2330 char *name = NULL;
2332 vlan_id = 0;
2333 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2334 vlan_id = strtol(buf, NULL, 0);
2336 vlan = qemu_find_vlan(vlan_id);
2338 if (get_param_value(buf, sizeof(buf), "name", p)) {
2339 name = qemu_strdup(buf);
2341 if (!strcmp(device, "nic")) {
2342 static const char * const nic_params[] = {
2343 "vlan", "name", "macaddr", "model", "addr", "vectors", NULL
2345 NICInfo *nd;
2346 uint8_t *macaddr;
2347 int idx = nic_get_free_idx();
2349 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
2350 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2351 ret = -1;
2352 goto out;
2354 if (idx == -1 || nb_nics >= MAX_NICS) {
2355 config_error(mon, "Too Many NICs\n");
2356 ret = -1;
2357 goto out;
2359 nd = &nd_table[idx];
2360 macaddr = nd->macaddr;
2361 macaddr[0] = 0x52;
2362 macaddr[1] = 0x54;
2363 macaddr[2] = 0x00;
2364 macaddr[3] = 0x12;
2365 macaddr[4] = 0x34;
2366 macaddr[5] = 0x56 + idx;
2368 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2369 if (parse_macaddr(macaddr, buf) < 0) {
2370 config_error(mon, "invalid syntax for ethernet address\n");
2371 ret = -1;
2372 goto out;
2375 if (get_param_value(buf, sizeof(buf), "model", p)) {
2376 nd->model = strdup(buf);
2378 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2379 nd->devaddr = strdup(buf);
2381 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2382 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2383 char *endptr;
2384 long vectors = strtol(buf, &endptr, 0);
2385 if (*endptr) {
2386 config_error(mon, "invalid syntax for # of vectors\n");
2387 ret = -1;
2388 goto out;
2390 if (vectors < 0 || vectors > 0x7ffffff) {
2391 config_error(mon, "invalid # of vectors\n");
2392 ret = -1;
2393 goto out;
2395 nd->nvectors = vectors;
2397 nd->vlan = vlan;
2398 nd->name = name;
2399 nd->used = 1;
2400 name = NULL;
2401 nb_nics++;
2402 vlan->nb_guest_devs++;
2403 ret = idx;
2404 } else
2405 if (!strcmp(device, "none")) {
2406 if (*p != '\0') {
2407 config_error(mon, "'none' takes no parameters\n");
2408 ret = -1;
2409 goto out;
2411 /* does nothing. It is needed to signal that no network cards
2412 are wanted */
2413 ret = 0;
2414 } else
2415 #ifdef CONFIG_SLIRP
2416 if (!strcmp(device, "user")) {
2417 static const char * const slirp_params[] = {
2418 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2419 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2420 "hostfwd", "guestfwd", NULL
2422 struct slirp_config_str *config;
2423 int restricted = 0;
2424 char *vnet = NULL;
2425 char *vhost = NULL;
2426 char *vhostname = NULL;
2427 char *tftp_export = NULL;
2428 char *bootfile = NULL;
2429 char *vdhcp_start = NULL;
2430 char *vnamesrv = NULL;
2431 char *smb_export = NULL;
2432 char *vsmbsrv = NULL;
2433 const char *q;
2435 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
2436 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2437 ret = -1;
2438 goto out;
2440 if (get_param_value(buf, sizeof(buf), "ip", p)) {
2441 /* emulate legacy parameter */
2442 vnet = qemu_malloc(strlen(buf) + strlen("/24") + 1);
2443 strcpy(vnet, buf);
2444 strcat(vnet, "/24");
2446 if (get_param_value(buf, sizeof(buf), "net", p)) {
2447 vnet = qemu_strdup(buf);
2449 if (get_param_value(buf, sizeof(buf), "host", p)) {
2450 vhost = qemu_strdup(buf);
2452 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
2453 vhostname = qemu_strdup(buf);
2455 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
2456 restricted = (buf[0] == 'y') ? 1 : 0;
2458 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2459 vdhcp_start = qemu_strdup(buf);
2461 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2462 vnamesrv = qemu_strdup(buf);
2464 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2465 tftp_export = qemu_strdup(buf);
2467 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2468 bootfile = qemu_strdup(buf);
2470 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2471 smb_export = qemu_strdup(buf);
2472 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2473 vsmbsrv = qemu_strdup(buf);
2476 q = p;
2477 while (1) {
2478 config = qemu_malloc(sizeof(*config));
2479 if (!get_next_param_value(config->str, sizeof(config->str),
2480 "hostfwd", &q)) {
2481 break;
2483 config->flags = SLIRP_CFG_HOSTFWD;
2484 config->next = slirp_configs;
2485 slirp_configs = config;
2486 config = NULL;
2488 q = p;
2489 while (1) {
2490 config = qemu_malloc(sizeof(*config));
2491 if (!get_next_param_value(config->str, sizeof(config->str),
2492 "guestfwd", &q)) {
2493 break;
2495 config->flags = 0;
2496 config->next = slirp_configs;
2497 slirp_configs = config;
2498 config = NULL;
2500 qemu_free(config);
2501 vlan->nb_host_devs++;
2502 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2503 vhostname, tftp_export, bootfile, vdhcp_start,
2504 vnamesrv, smb_export, vsmbsrv);
2505 qemu_free(vnet);
2506 qemu_free(vhost);
2507 qemu_free(vhostname);
2508 qemu_free(tftp_export);
2509 qemu_free(bootfile);
2510 qemu_free(vdhcp_start);
2511 qemu_free(vnamesrv);
2512 qemu_free(smb_export);
2513 qemu_free(vsmbsrv);
2514 } else if (!strcmp(device, "channel")) {
2515 if (!slirp_inited) {
2516 struct slirp_config_str *config;
2518 config = qemu_malloc(sizeof(*config));
2519 pstrcpy(config->str, sizeof(config->str), p);
2520 config->flags = SLIRP_CFG_LEGACY;
2521 config->next = slirp_configs;
2522 slirp_configs = config;
2523 } else {
2524 slirp_guestfwd(mon, p, 1);
2526 ret = 0;
2527 } else
2528 #endif
2529 #ifdef _WIN32
2530 if (!strcmp(device, "tap")) {
2531 static const char * const tap_params[] = {
2532 "vlan", "name", "ifname", NULL
2534 char ifname[64];
2536 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
2537 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2538 ret = -1;
2539 goto out;
2541 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2542 config_error(mon, "tap: no interface name\n");
2543 ret = -1;
2544 goto out;
2546 vlan->nb_host_devs++;
2547 ret = tap_win32_init(vlan, device, name, ifname);
2548 } else
2549 #elif defined (_AIX)
2550 #else
2551 if (!strcmp(device, "tap")) {
2552 char ifname[64], chkbuf[64];
2553 char setup_script[1024], down_script[1024];
2554 TAPState *s;
2555 int fd;
2556 vlan->nb_host_devs++;
2557 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2558 static const char * const fd_params[] = {
2559 "vlan", "name", "fd", "sndbuf", NULL
2561 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2562 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2563 ret = -1;
2564 goto out;
2566 fd = strtol(buf, NULL, 0);
2567 fcntl(fd, F_SETFL, O_NONBLOCK);
2568 s = net_tap_fd_init(vlan, device, name, fd);
2569 } else {
2570 static const char * const tap_params[] = {
2571 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
2573 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
2574 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2575 ret = -1;
2576 goto out;
2578 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2579 ifname[0] = '\0';
2581 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2582 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2584 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2585 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2587 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2589 if (s != NULL) {
2590 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
2591 tap_set_sndbuf(s, atoi(buf), mon);
2593 ret = 0;
2594 } else {
2595 ret = -1;
2597 } else
2598 #endif
2599 if (!strcmp(device, "socket")) {
2600 char chkbuf[64];
2601 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2602 static const char * const fd_params[] = {
2603 "vlan", "name", "fd", NULL
2605 int fd;
2606 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2607 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2608 ret = -1;
2609 goto out;
2611 fd = strtol(buf, NULL, 0);
2612 ret = -1;
2613 if (net_socket_fd_init(vlan, device, name, fd, 1))
2614 ret = 0;
2615 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
2616 static const char * const listen_params[] = {
2617 "vlan", "name", "listen", NULL
2619 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
2620 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2621 ret = -1;
2622 goto out;
2624 ret = net_socket_listen_init(vlan, device, name, buf);
2625 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
2626 static const char * const connect_params[] = {
2627 "vlan", "name", "connect", NULL
2629 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
2630 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2631 ret = -1;
2632 goto out;
2634 ret = net_socket_connect_init(vlan, device, name, buf);
2635 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
2636 static const char * const mcast_params[] = {
2637 "vlan", "name", "mcast", NULL
2639 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
2640 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2641 ret = -1;
2642 goto out;
2644 ret = net_socket_mcast_init(vlan, device, name, buf);
2645 } else {
2646 config_error(mon, "Unknown socket options: %s\n", p);
2647 ret = -1;
2648 goto out;
2650 vlan->nb_host_devs++;
2651 } else
2652 #ifdef CONFIG_VDE
2653 if (!strcmp(device, "vde")) {
2654 static const char * const vde_params[] = {
2655 "vlan", "name", "sock", "port", "group", "mode", NULL
2657 char vde_sock[1024], vde_group[512];
2658 int vde_port, vde_mode;
2660 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
2661 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2662 ret = -1;
2663 goto out;
2665 vlan->nb_host_devs++;
2666 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2667 vde_sock[0] = '\0';
2669 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2670 vde_port = strtol(buf, NULL, 10);
2671 } else {
2672 vde_port = 0;
2674 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2675 vde_group[0] = '\0';
2677 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2678 vde_mode = strtol(buf, NULL, 8);
2679 } else {
2680 vde_mode = 0700;
2682 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
2683 } else
2684 #endif
2685 if (!strcmp(device, "dump")) {
2686 int len = 65536;
2688 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2689 len = strtol(buf, NULL, 0);
2691 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2692 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2694 ret = net_dump_init(mon, vlan, device, name, buf, len);
2695 } else {
2696 config_error(mon, "Unknown network device: %s\n", device);
2697 ret = -1;
2698 goto out;
2700 if (ret < 0) {
2701 config_error(mon, "Could not initialize device '%s'\n", device);
2703 out:
2704 qemu_free(name);
2705 return ret;
2708 void net_client_uninit(NICInfo *nd)
2710 nd->vlan->nb_guest_devs--;
2711 nb_nics--;
2712 nd->used = 0;
2713 free((void *)nd->model);
2716 static int net_host_check_device(const char *device)
2718 int i;
2719 const char *valid_param_list[] = { "tap", "socket", "dump"
2720 #ifdef CONFIG_SLIRP
2721 ,"user"
2722 #endif
2723 #ifdef CONFIG_VDE
2724 ,"vde"
2725 #endif
2727 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2728 if (!strncmp(valid_param_list[i], device,
2729 strlen(valid_param_list[i])))
2730 return 1;
2733 return 0;
2736 void net_host_device_add(Monitor *mon, const char *device, const char *opts)
2738 if (!net_host_check_device(device)) {
2739 monitor_printf(mon, "invalid host network device %s\n", device);
2740 return;
2742 if (net_client_init(mon, device, opts ? opts : "") < 0) {
2743 monitor_printf(mon, "adding host network device %s failed\n", device);
2747 void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
2749 VLANState *vlan;
2750 VLANClientState *vc;
2752 vlan = qemu_find_vlan(vlan_id);
2754 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
2755 if (!strcmp(vc->name, device)) {
2756 break;
2760 if (!vc) {
2761 monitor_printf(mon, "can't find device %s\n", device);
2762 return;
2764 if (!net_host_check_device(vc->model)) {
2765 monitor_printf(mon, "invalid host network device %s\n", device);
2766 return;
2768 qemu_del_vlan_client(vc);
2771 int net_client_parse(const char *str)
2773 const char *p;
2774 char *q;
2775 char device[64];
2777 p = str;
2778 q = device;
2779 while (*p != '\0' && *p != ',') {
2780 if ((q - device) < sizeof(device) - 1)
2781 *q++ = *p;
2782 p++;
2784 *q = '\0';
2785 if (*p == ',')
2786 p++;
2788 return net_client_init(NULL, device, p);
2791 void net_set_boot_mask(int net_boot_mask)
2793 int i;
2795 /* Only the first four NICs may be bootable */
2796 net_boot_mask = net_boot_mask & 0xF;
2798 for (i = 0; i < nb_nics; i++) {
2799 if (net_boot_mask & (1 << i)) {
2800 nd_table[i].bootable = 1;
2801 net_boot_mask &= ~(1 << i);
2805 if (net_boot_mask) {
2806 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2807 exit(1);
2811 void do_info_network(Monitor *mon)
2813 VLANState *vlan;
2814 VLANClientState *vc;
2816 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2817 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
2818 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
2819 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
2823 int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
2825 VLANState *vlan;
2826 VLANClientState *vc = NULL;
2828 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2829 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2830 if (strcmp(vc->name, name) == 0)
2831 goto done;
2832 done:
2834 if (!vc) {
2835 monitor_printf(mon, "could not find network device '%s'", name);
2836 return 0;
2839 if (strcmp(up_or_down, "up") == 0)
2840 vc->link_down = 0;
2841 else if (strcmp(up_or_down, "down") == 0)
2842 vc->link_down = 1;
2843 else
2844 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2845 "valid\n", up_or_down);
2847 if (vc->link_status_changed)
2848 vc->link_status_changed(vc);
2850 return 1;
2853 void net_cleanup(void)
2855 VLANState *vlan;
2857 /* close network clients */
2858 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2859 VLANClientState *vc = vlan->first_client;
2861 while (vc) {
2862 VLANClientState *next = vc->next;
2864 qemu_del_vlan_client(vc);
2866 vc = next;
2871 void net_client_check(void)
2873 VLANState *vlan;
2875 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2876 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2877 continue;
2878 if (vlan->nb_guest_devs == 0)
2879 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2880 if (vlan->nb_host_devs == 0)
2881 fprintf(stderr,
2882 "Warning: vlan %d is not connected to host network\n",
2883 vlan->id);