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
32 /* Needed early for CONFIG_BSD etc. */
33 #include "config-host.h"
36 #include <sys/times.h>
40 #include <sys/ioctl.h>
41 #include <sys/resource.h>
42 #include <sys/socket.h>
43 #include <netinet/in.h>
46 #include <net/if_tap.h>
49 #include "tap-linux.h"
51 #include <arpa/inet.h>
54 #include <sys/select.h>
57 #if defined(__FreeBSD__) || defined(__DragonFly__)
62 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
63 #include <freebsd/stdlib.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> */
75 #include <linux/ppdev.h>
76 #include <linux/parport.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>
96 #if defined(__OpenBSD__)
100 #if defined(CONFIG_VDE)
101 #include <libvdeplug.h>
104 #include "qemu-common.h"
108 #include "qemu-timer.h"
109 #include "qemu-char.h"
110 #include "audio/audio.h"
111 #include "qemu_socket.h"
112 #include "qemu-log.h"
113 #include "qemu-config.h"
115 #include "slirp/libslirp.h"
117 static QTAILQ_HEAD(, VLANState
) vlans
;
118 static QTAILQ_HEAD(, VLANClientState
) non_vlan_clients
;
120 /***********************************************************/
121 /* network device redirectors */
123 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
124 static void hex_dump(FILE *f
, const uint8_t *buf
, int size
)
128 for(i
=0;i
<size
;i
+=16) {
132 fprintf(f
, "%08x ", i
);
135 fprintf(f
, " %02x", buf
[i
+j
]);
142 if (c
< ' ' || c
> '~')
151 static int parse_macaddr(uint8_t *macaddr
, const char *p
)
158 offset
= strtol(p
, &last_char
, 0);
159 if (0 == errno
&& '\0' == *last_char
&&
160 offset
>= 0 && offset
<= 0xFFFFFF) {
161 macaddr
[3] = (offset
& 0xFF0000) >> 16;
162 macaddr
[4] = (offset
& 0xFF00) >> 8;
163 macaddr
[5] = offset
& 0xFF;
166 for(i
= 0; i
< 6; i
++) {
167 macaddr
[i
] = strtol(p
, (char **)&p
, 16);
172 if (*p
!= ':' && *p
!= '-')
183 static int get_str_sep(char *buf
, int buf_size
, const char **pp
, int sep
)
194 if (len
> buf_size
- 1)
203 int parse_host_src_port(struct sockaddr_in
*haddr
,
204 struct sockaddr_in
*saddr
,
205 const char *input_str
)
207 char *str
= strdup(input_str
);
208 char *host_str
= str
;
210 const char *src_str2
;
214 * Chop off any extra arguments at the end of the string which
215 * would start with a comma, then fill in the src port information
216 * if it was provided else use the "any address" and "any port".
218 if ((ptr
= strchr(str
,',')))
221 if ((src_str
= strchr(input_str
,'@'))) {
226 if (parse_host_port(haddr
, host_str
) < 0)
230 if (!src_str
|| *src_str
== '\0')
233 if (parse_host_port(saddr
, src_str2
) < 0)
244 int parse_host_port(struct sockaddr_in
*saddr
, const char *str
)
252 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
254 saddr
->sin_family
= AF_INET
;
255 if (buf
[0] == '\0') {
256 saddr
->sin_addr
.s_addr
= 0;
258 if (qemu_isdigit(buf
[0])) {
259 if (!inet_aton(buf
, &saddr
->sin_addr
))
262 if ((he
= gethostbyname(buf
)) == NULL
)
264 saddr
->sin_addr
= *(struct in_addr
*)he
->h_addr
;
267 port
= strtol(p
, (char **)&r
, 0);
270 saddr
->sin_port
= htons(port
);
274 void qemu_format_nic_info_str(VLANClientState
*vc
, uint8_t macaddr
[6])
276 snprintf(vc
->info_str
, sizeof(vc
->info_str
),
277 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
279 macaddr
[0], macaddr
[1], macaddr
[2],
280 macaddr
[3], macaddr
[4], macaddr
[5]);
283 void qemu_macaddr_default_if_unset(MACAddr
*macaddr
)
285 static int index
= 0;
286 static const MACAddr zero
= { .a
= { 0,0,0,0,0,0 } };
288 if (memcmp(macaddr
, &zero
, sizeof(zero
)) != 0)
290 macaddr
->a
[0] = 0x52;
291 macaddr
->a
[1] = 0x54;
292 macaddr
->a
[2] = 0x00;
293 macaddr
->a
[3] = 0x12;
294 macaddr
->a
[4] = 0x34;
295 macaddr
->a
[5] = 0x56 + index
++;
298 static char *assign_name(VLANClientState
*vc1
, const char *model
)
304 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
307 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
308 if (vc
!= vc1
&& strcmp(vc
->model
, model
) == 0) {
314 snprintf(buf
, sizeof(buf
), "%s.%d", model
, id
);
316 return qemu_strdup(buf
);
319 static ssize_t
qemu_deliver_packet(VLANClientState
*sender
,
324 static ssize_t
qemu_deliver_packet_iov(VLANClientState
*sender
,
326 const struct iovec
*iov
,
330 VLANClientState
*qemu_new_vlan_client(net_client_type type
,
332 VLANClientState
*peer
,
335 NetCanReceive
*can_receive
,
337 NetReceive
*receive_raw
,
338 NetReceiveIOV
*receive_iov
,
344 vc
= qemu_mallocz(sizeof(VLANClientState
));
347 vc
->model
= qemu_strdup(model
);
349 vc
->name
= qemu_strdup(name
);
351 vc
->name
= assign_name(vc
, model
);
352 vc
->can_receive
= can_receive
;
353 vc
->receive
= receive
;
354 vc
->receive_raw
= receive_raw
;
355 vc
->receive_iov
= receive_iov
;
356 vc
->cleanup
= cleanup
;
362 QTAILQ_INSERT_TAIL(&vc
->vlan
->clients
, vc
, next
);
368 QTAILQ_INSERT_TAIL(&non_vlan_clients
, vc
, next
);
370 vc
->send_queue
= qemu_new_net_queue(qemu_deliver_packet
,
371 qemu_deliver_packet_iov
,
378 void qemu_del_vlan_client(VLANClientState
*vc
)
381 QTAILQ_REMOVE(&vc
->vlan
->clients
, vc
, next
);
383 if (vc
->send_queue
) {
384 qemu_del_net_queue(vc
->send_queue
);
386 QTAILQ_REMOVE(&non_vlan_clients
, vc
, next
);
388 vc
->peer
->peer
= NULL
;
397 qemu_free(vc
->model
);
401 VLANClientState
*qemu_find_vlan_client(VLANState
*vlan
, void *opaque
)
405 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
406 if (vc
->opaque
== opaque
) {
414 static VLANClientState
*
415 qemu_find_vlan_client_by_name(Monitor
*mon
, int vlan_id
,
416 const char *client_str
)
421 vlan
= qemu_find_vlan(vlan_id
, 0);
423 monitor_printf(mon
, "unknown VLAN %d\n", vlan_id
);
427 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
428 if (!strcmp(vc
->name
, client_str
)) {
433 monitor_printf(mon
, "can't find device %s on VLAN %d\n",
434 client_str
, vlan_id
);
440 int qemu_can_send_packet(VLANClientState
*sender
)
442 VLANState
*vlan
= sender
->vlan
;
446 if (!sender
->peer
->can_receive
||
447 sender
->peer
->can_receive(sender
->peer
)) {
458 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
463 /* no can_receive() handler, they can always receive */
464 if (!vc
->can_receive
|| vc
->can_receive(vc
)) {
471 static ssize_t
qemu_deliver_packet(VLANClientState
*sender
,
477 VLANClientState
*vc
= opaque
;
483 if (flags
& QEMU_NET_PACKET_FLAG_RAW
&& vc
->receive_raw
)
484 return vc
->receive_raw(vc
, data
, size
);
486 return vc
->receive(vc
, data
, size
);
489 static ssize_t
qemu_vlan_deliver_packet(VLANClientState
*sender
,
495 VLANState
*vlan
= opaque
;
499 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
511 if (flags
& QEMU_NET_PACKET_FLAG_RAW
&& vc
->receive_raw
)
512 len
= vc
->receive_raw(vc
, buf
, size
);
514 len
= vc
->receive(vc
, buf
, size
);
516 ret
= (ret
>= 0) ? ret
: len
;
522 void qemu_purge_queued_packets(VLANClientState
*vc
)
526 if (!vc
->peer
&& !vc
->vlan
) {
531 queue
= vc
->peer
->send_queue
;
533 queue
= vc
->vlan
->send_queue
;
536 qemu_net_queue_purge(queue
, vc
);
539 void qemu_flush_queued_packets(VLANClientState
*vc
)
544 queue
= vc
->vlan
->send_queue
;
546 queue
= vc
->send_queue
;
549 qemu_net_queue_flush(queue
);
552 static ssize_t
qemu_send_packet_async_with_flags(VLANClientState
*sender
,
554 const uint8_t *buf
, int size
,
555 NetPacketSent
*sent_cb
)
560 printf("qemu_send_packet_async:\n");
561 hex_dump(stdout
, buf
, size
);
564 if (sender
->link_down
|| (!sender
->peer
&& !sender
->vlan
)) {
569 queue
= sender
->peer
->send_queue
;
571 queue
= sender
->vlan
->send_queue
;
574 return qemu_net_queue_send(queue
, sender
, flags
, buf
, size
, sent_cb
);
577 ssize_t
qemu_send_packet_async(VLANClientState
*sender
,
578 const uint8_t *buf
, int size
,
579 NetPacketSent
*sent_cb
)
581 return qemu_send_packet_async_with_flags(sender
, QEMU_NET_PACKET_FLAG_NONE
,
585 void qemu_send_packet(VLANClientState
*vc
, const uint8_t *buf
, int size
)
587 qemu_send_packet_async(vc
, buf
, size
, NULL
);
590 ssize_t
qemu_send_packet_raw(VLANClientState
*vc
, const uint8_t *buf
, int size
)
592 return qemu_send_packet_async_with_flags(vc
, QEMU_NET_PACKET_FLAG_RAW
,
596 static ssize_t
vc_sendv_compat(VLANClientState
*vc
, const struct iovec
*iov
,
599 uint8_t buffer
[4096];
603 for (i
= 0; i
< iovcnt
; i
++) {
606 len
= MIN(sizeof(buffer
) - offset
, iov
[i
].iov_len
);
607 memcpy(buffer
+ offset
, iov
[i
].iov_base
, len
);
611 return vc
->receive(vc
, buffer
, offset
);
614 static ssize_t
calc_iov_length(const struct iovec
*iov
, int iovcnt
)
619 for (i
= 0; i
< iovcnt
; i
++)
620 offset
+= iov
[i
].iov_len
;
624 static ssize_t
qemu_deliver_packet_iov(VLANClientState
*sender
,
626 const struct iovec
*iov
,
630 VLANClientState
*vc
= opaque
;
633 return calc_iov_length(iov
, iovcnt
);
636 if (vc
->receive_iov
) {
637 return vc
->receive_iov(vc
, iov
, iovcnt
);
639 return vc_sendv_compat(vc
, iov
, iovcnt
);
643 static ssize_t
qemu_vlan_deliver_packet_iov(VLANClientState
*sender
,
645 const struct iovec
*iov
,
649 VLANState
*vlan
= opaque
;
653 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
661 ret
= calc_iov_length(iov
, iovcnt
);
665 assert(!(flags
& QEMU_NET_PACKET_FLAG_RAW
));
667 if (vc
->receive_iov
) {
668 len
= vc
->receive_iov(vc
, iov
, iovcnt
);
670 len
= vc_sendv_compat(vc
, iov
, iovcnt
);
673 ret
= (ret
>= 0) ? ret
: len
;
679 ssize_t
qemu_sendv_packet_async(VLANClientState
*sender
,
680 const struct iovec
*iov
, int iovcnt
,
681 NetPacketSent
*sent_cb
)
685 if (sender
->link_down
|| (!sender
->peer
&& !sender
->vlan
)) {
686 return calc_iov_length(iov
, iovcnt
);
690 queue
= sender
->peer
->send_queue
;
692 queue
= sender
->vlan
->send_queue
;
695 return qemu_net_queue_send_iov(queue
, sender
,
696 QEMU_NET_PACKET_FLAG_NONE
,
697 iov
, iovcnt
, sent_cb
);
701 qemu_sendv_packet(VLANClientState
*vc
, const struct iovec
*iov
, int iovcnt
)
703 return qemu_sendv_packet_async(vc
, iov
, iovcnt
, NULL
);
706 #if defined(CONFIG_SLIRP)
708 /* slirp network adapter */
710 #define SLIRP_CFG_HOSTFWD 1
711 #define SLIRP_CFG_LEGACY 2
713 struct slirp_config_str
{
714 struct slirp_config_str
*next
;
720 typedef struct SlirpState
{
721 QTAILQ_ENTRY(SlirpState
) entry
;
729 static struct slirp_config_str
*slirp_configs
;
730 const char *legacy_tftp_prefix
;
731 const char *legacy_bootp_filename
;
732 static QTAILQ_HEAD(slirp_stacks
, SlirpState
) slirp_stacks
=
733 QTAILQ_HEAD_INITIALIZER(slirp_stacks
);
735 static int slirp_hostfwd(SlirpState
*s
, const char *redir_str
,
737 static int slirp_guestfwd(SlirpState
*s
, const char *config_str
,
741 static const char *legacy_smb_export
;
743 static int slirp_smb(SlirpState
*s
, const char *exported_dir
,
744 struct in_addr vserver_addr
);
745 static void slirp_smb_cleanup(SlirpState
*s
);
747 static inline void slirp_smb_cleanup(SlirpState
*s
) { }
750 int slirp_can_output(void *opaque
)
752 SlirpState
*s
= opaque
;
754 return qemu_can_send_packet(s
->vc
);
757 void slirp_output(void *opaque
, const uint8_t *pkt
, int pkt_len
)
759 SlirpState
*s
= opaque
;
762 printf("slirp output:\n");
763 hex_dump(stdout
, pkt
, pkt_len
);
765 qemu_send_packet(s
->vc
, pkt
, pkt_len
);
768 static ssize_t
slirp_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
770 SlirpState
*s
= vc
->opaque
;
773 printf("slirp input:\n");
774 hex_dump(stdout
, buf
, size
);
776 slirp_input(s
->slirp
, buf
, size
);
780 static void net_slirp_cleanup(VLANClientState
*vc
)
782 SlirpState
*s
= vc
->opaque
;
784 slirp_cleanup(s
->slirp
);
785 slirp_smb_cleanup(s
);
786 QTAILQ_REMOVE(&slirp_stacks
, s
, entry
);
790 static int net_slirp_init(VLANState
*vlan
, const char *model
,
791 const char *name
, int restricted
,
792 const char *vnetwork
, const char *vhost
,
793 const char *vhostname
, const char *tftp_export
,
794 const char *bootfile
, const char *vdhcp_start
,
795 const char *vnameserver
, const char *smb_export
,
796 const char *vsmbserver
)
798 /* default settings according to historic slirp */
799 struct in_addr net
= { .s_addr
= htonl(0x0a000200) }; /* 10.0.2.0 */
800 struct in_addr mask
= { .s_addr
= htonl(0xffffff00) }; /* 255.255.255.0 */
801 struct in_addr host
= { .s_addr
= htonl(0x0a000202) }; /* 10.0.2.2 */
802 struct in_addr dhcp
= { .s_addr
= htonl(0x0a00020f) }; /* 10.0.2.15 */
803 struct in_addr dns
= { .s_addr
= htonl(0x0a000203) }; /* 10.0.2.3 */
805 struct in_addr smbsrv
= { .s_addr
= 0 };
812 struct slirp_config_str
*config
;
815 tftp_export
= legacy_tftp_prefix
;
818 bootfile
= legacy_bootp_filename
;
822 if (get_str_sep(buf
, sizeof(buf
), &vnetwork
, '/') < 0) {
823 if (!inet_aton(vnetwork
, &net
)) {
826 addr
= ntohl(net
.s_addr
);
827 if (!(addr
& 0x80000000)) {
828 mask
.s_addr
= htonl(0xff000000); /* class A */
829 } else if ((addr
& 0xfff00000) == 0xac100000) {
830 mask
.s_addr
= htonl(0xfff00000); /* priv. 172.16.0.0/12 */
831 } else if ((addr
& 0xc0000000) == 0x80000000) {
832 mask
.s_addr
= htonl(0xffff0000); /* class B */
833 } else if ((addr
& 0xffff0000) == 0xc0a80000) {
834 mask
.s_addr
= htonl(0xffff0000); /* priv. 192.168.0.0/16 */
835 } else if ((addr
& 0xffff0000) == 0xc6120000) {
836 mask
.s_addr
= htonl(0xfffe0000); /* tests 198.18.0.0/15 */
837 } else if ((addr
& 0xe0000000) == 0xe0000000) {
838 mask
.s_addr
= htonl(0xffffff00); /* class C */
840 mask
.s_addr
= htonl(0xfffffff0); /* multicast/reserved */
843 if (!inet_aton(buf
, &net
)) {
846 shift
= strtol(vnetwork
, &end
, 10);
848 if (!inet_aton(vnetwork
, &mask
)) {
851 } else if (shift
< 4 || shift
> 32) {
854 mask
.s_addr
= htonl(0xffffffff << (32 - shift
));
857 net
.s_addr
&= mask
.s_addr
;
858 host
.s_addr
= net
.s_addr
| (htonl(0x0202) & ~mask
.s_addr
);
859 dhcp
.s_addr
= net
.s_addr
| (htonl(0x020f) & ~mask
.s_addr
);
860 dns
.s_addr
= net
.s_addr
| (htonl(0x0203) & ~mask
.s_addr
);
863 if (vhost
&& !inet_aton(vhost
, &host
)) {
866 if ((host
.s_addr
& mask
.s_addr
) != net
.s_addr
) {
870 if (vdhcp_start
&& !inet_aton(vdhcp_start
, &dhcp
)) {
873 if ((dhcp
.s_addr
& mask
.s_addr
) != net
.s_addr
||
874 dhcp
.s_addr
== host
.s_addr
|| dhcp
.s_addr
== dns
.s_addr
) {
878 if (vnameserver
&& !inet_aton(vnameserver
, &dns
)) {
881 if ((dns
.s_addr
& mask
.s_addr
) != net
.s_addr
||
882 dns
.s_addr
== host
.s_addr
) {
887 if (vsmbserver
&& !inet_aton(vsmbserver
, &smbsrv
)) {
892 s
= qemu_mallocz(sizeof(SlirpState
));
893 s
->slirp
= slirp_init(restricted
, net
, mask
, host
, vhostname
,
894 tftp_export
, bootfile
, dhcp
, dns
, s
);
895 QTAILQ_INSERT_TAIL(&slirp_stacks
, s
, entry
);
897 for (config
= slirp_configs
; config
; config
= config
->next
) {
898 if (config
->flags
& SLIRP_CFG_HOSTFWD
) {
899 if (slirp_hostfwd(s
, config
->str
,
900 config
->flags
& SLIRP_CFG_LEGACY
) < 0)
903 if (slirp_guestfwd(s
, config
->str
,
904 config
->flags
& SLIRP_CFG_LEGACY
) < 0)
910 smb_export
= legacy_smb_export
;
913 if (slirp_smb(s
, smb_export
, smbsrv
) < 0)
918 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_SLIRP
,
919 vlan
, NULL
, model
, name
, NULL
,
920 slirp_receive
, NULL
, NULL
,
921 net_slirp_cleanup
, s
);
922 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
923 "net=%s, restricted=%c", inet_ntoa(net
), restricted
? 'y' : 'n');
927 static SlirpState
*slirp_lookup(Monitor
*mon
, const char *vlan
,
933 vc
= qemu_find_vlan_client_by_name(mon
, strtol(vlan
, NULL
, 0), stack
);
937 if (strcmp(vc
->model
, "user")) {
938 monitor_printf(mon
, "invalid device specified\n");
943 if (QTAILQ_EMPTY(&slirp_stacks
)) {
944 monitor_printf(mon
, "user mode network stack not in use\n");
947 return QTAILQ_FIRST(&slirp_stacks
);
951 void net_slirp_hostfwd_remove(Monitor
*mon
, const QDict
*qdict
)
953 struct in_addr host_addr
= { .s_addr
= INADDR_ANY
};
956 const char *src_str
, *p
;
960 const char *arg1
= qdict_get_str(qdict
, "arg1");
961 const char *arg2
= qdict_get_try_str(qdict
, "arg2");
962 const char *arg3
= qdict_get_try_str(qdict
, "arg3");
965 s
= slirp_lookup(mon
, arg1
, arg2
);
968 s
= slirp_lookup(mon
, NULL
, NULL
);
975 if (!src_str
|| !src_str
[0])
979 get_str_sep(buf
, sizeof(buf
), &p
, ':');
981 if (!strcmp(buf
, "tcp") || buf
[0] == '\0') {
983 } else if (!strcmp(buf
, "udp")) {
989 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
992 if (buf
[0] != '\0' && !inet_aton(buf
, &host_addr
)) {
998 err
= slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks
)->slirp
, is_udp
,
999 host_addr
, host_port
);
1001 monitor_printf(mon
, "host forwarding rule for %s %s\n", src_str
,
1002 err
? "removed" : "not found");
1006 monitor_printf(mon
, "invalid format\n");
1009 static int slirp_hostfwd(SlirpState
*s
, const char *redir_str
,
1012 struct in_addr host_addr
= { .s_addr
= INADDR_ANY
};
1013 struct in_addr guest_addr
= { .s_addr
= 0 };
1014 int host_port
, guest_port
;
1021 if (!p
|| get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1024 if (!strcmp(buf
, "tcp") || buf
[0] == '\0') {
1026 } else if (!strcmp(buf
, "udp")) {
1032 if (!legacy_format
) {
1033 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1036 if (buf
[0] != '\0' && !inet_aton(buf
, &host_addr
)) {
1041 if (get_str_sep(buf
, sizeof(buf
), &p
, legacy_format
? ':' : '-') < 0) {
1044 host_port
= strtol(buf
, &end
, 0);
1045 if (*end
!= '\0' || host_port
< 1 || host_port
> 65535) {
1049 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1052 if (buf
[0] != '\0' && !inet_aton(buf
, &guest_addr
)) {
1056 guest_port
= strtol(p
, &end
, 0);
1057 if (*end
!= '\0' || guest_port
< 1 || guest_port
> 65535) {
1061 if (slirp_add_hostfwd(s
->slirp
, is_udp
, host_addr
, host_port
, guest_addr
,
1063 qemu_error("could not set up host forwarding rule '%s'\n",
1070 qemu_error("invalid host forwarding rule '%s'\n", redir_str
);
1074 void net_slirp_hostfwd_add(Monitor
*mon
, const QDict
*qdict
)
1076 const char *redir_str
;
1078 const char *arg1
= qdict_get_str(qdict
, "arg1");
1079 const char *arg2
= qdict_get_try_str(qdict
, "arg2");
1080 const char *arg3
= qdict_get_try_str(qdict
, "arg3");
1083 s
= slirp_lookup(mon
, arg1
, arg2
);
1086 s
= slirp_lookup(mon
, NULL
, NULL
);
1090 slirp_hostfwd(s
, redir_str
, 0);
1095 int net_slirp_redir(const char *redir_str
)
1097 struct slirp_config_str
*config
;
1099 if (QTAILQ_EMPTY(&slirp_stacks
)) {
1100 config
= qemu_malloc(sizeof(*config
));
1101 pstrcpy(config
->str
, sizeof(config
->str
), redir_str
);
1102 config
->flags
= SLIRP_CFG_HOSTFWD
| SLIRP_CFG_LEGACY
;
1103 config
->next
= slirp_configs
;
1104 slirp_configs
= config
;
1108 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks
), redir_str
, 1);
1113 /* automatic user mode samba server configuration */
1114 static void slirp_smb_cleanup(SlirpState
*s
)
1118 if (s
->smb_dir
[0] != '\0') {
1119 snprintf(cmd
, sizeof(cmd
), "rm -rf %s", s
->smb_dir
);
1121 s
->smb_dir
[0] = '\0';
1125 static int slirp_smb(SlirpState
* s
, const char *exported_dir
,
1126 struct in_addr vserver_addr
)
1128 static int instance
;
1130 char smb_cmdline
[128];
1133 snprintf(s
->smb_dir
, sizeof(s
->smb_dir
), "/tmp/qemu-smb.%ld-%d",
1134 (long)getpid(), instance
++);
1135 if (mkdir(s
->smb_dir
, 0700) < 0) {
1136 qemu_error("could not create samba server dir '%s'\n", s
->smb_dir
);
1139 snprintf(smb_conf
, sizeof(smb_conf
), "%s/%s", s
->smb_dir
, "smb.conf");
1141 f
= fopen(smb_conf
, "w");
1143 slirp_smb_cleanup(s
);
1144 qemu_error("could not create samba server configuration file '%s'\n",
1152 "socket address=127.0.0.1\n"
1153 "pid directory=%s\n"
1154 "lock directory=%s\n"
1155 "log file=%s/log.smbd\n"
1156 "smb passwd file=%s/smbpasswd\n"
1157 "security = share\n"
1171 snprintf(smb_cmdline
, sizeof(smb_cmdline
), "%s -s %s",
1172 SMBD_COMMAND
, smb_conf
);
1174 if (slirp_add_exec(s
->slirp
, 0, smb_cmdline
, &vserver_addr
, 139) < 0) {
1175 slirp_smb_cleanup(s
);
1176 qemu_error("conflicting/invalid smbserver address\n");
1182 /* automatic user mode samba server configuration (legacy interface) */
1183 int net_slirp_smb(const char *exported_dir
)
1185 struct in_addr vserver_addr
= { .s_addr
= 0 };
1187 if (legacy_smb_export
) {
1188 fprintf(stderr
, "-smb given twice\n");
1191 legacy_smb_export
= exported_dir
;
1192 if (!QTAILQ_EMPTY(&slirp_stacks
)) {
1193 return slirp_smb(QTAILQ_FIRST(&slirp_stacks
), exported_dir
,
1199 #endif /* !defined(_WIN32) */
1202 CharDriverState
*hd
;
1203 struct in_addr server
;
1208 static int guestfwd_can_read(void *opaque
)
1210 struct GuestFwd
*fwd
= opaque
;
1211 return slirp_socket_can_recv(fwd
->slirp
, fwd
->server
, fwd
->port
);
1214 static void guestfwd_read(void *opaque
, const uint8_t *buf
, int size
)
1216 struct GuestFwd
*fwd
= opaque
;
1217 slirp_socket_recv(fwd
->slirp
, fwd
->server
, fwd
->port
, buf
, size
);
1220 static int slirp_guestfwd(SlirpState
*s
, const char *config_str
,
1223 struct in_addr server
= { .s_addr
= 0 };
1224 struct GuestFwd
*fwd
;
1231 if (legacy_format
) {
1232 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1236 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1239 if (strcmp(buf
, "tcp") && buf
[0] != '\0') {
1242 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1245 if (buf
[0] != '\0' && !inet_aton(buf
, &server
)) {
1248 if (get_str_sep(buf
, sizeof(buf
), &p
, '-') < 0) {
1252 port
= strtol(buf
, &end
, 10);
1253 if (*end
!= '\0' || port
< 1 || port
> 65535) {
1257 fwd
= qemu_malloc(sizeof(struct GuestFwd
));
1258 snprintf(buf
, sizeof(buf
), "guestfwd.tcp:%d", port
);
1259 fwd
->hd
= qemu_chr_open(buf
, p
, NULL
);
1261 qemu_error("could not open guest forwarding device '%s'\n", buf
);
1266 if (slirp_add_exec(s
->slirp
, 3, fwd
->hd
, &server
, port
) < 0) {
1267 qemu_error("conflicting/invalid host:port in guest forwarding "
1268 "rule '%s'\n", config_str
);
1272 fwd
->server
= server
;
1274 fwd
->slirp
= s
->slirp
;
1276 qemu_chr_add_handlers(fwd
->hd
, guestfwd_can_read
, guestfwd_read
,
1281 qemu_error("invalid guest forwarding rule '%s'\n", config_str
);
1285 void do_info_usernet(Monitor
*mon
)
1289 QTAILQ_FOREACH(s
, &slirp_stacks
, entry
) {
1290 monitor_printf(mon
, "VLAN %d (%s):\n", s
->vc
->vlan
->id
, s
->vc
->name
);
1291 slirp_connection_info(s
->slirp
, mon
);
1295 #endif /* CONFIG_SLIRP */
1298 int tap_has_vnet_hdr(VLANClientState
*vc
)
1302 void tap_using_vnet_hdr(VLANClientState
*vc
, int using_vnet_hdr
)
1305 #else /* !defined(_WIN32) */
1307 /* Maximum GSO packet size (64k) plus plenty of room for
1308 * the ethernet and virtio_net headers
1310 #define TAP_BUFSIZE (4096 + 65536)
1312 typedef struct TAPState
{
1313 VLANClientState
*vc
;
1315 char down_script
[1024];
1316 char down_script_arg
[128];
1317 uint8_t buf
[TAP_BUFSIZE
];
1318 unsigned int read_poll
: 1;
1319 unsigned int write_poll
: 1;
1320 unsigned int has_vnet_hdr
: 1;
1321 unsigned int using_vnet_hdr
: 1;
1324 static int launch_script(const char *setup_script
, const char *ifname
, int fd
);
1326 static int tap_can_send(void *opaque
);
1327 static void tap_send(void *opaque
);
1328 static void tap_writable(void *opaque
);
1330 static void tap_update_fd_handler(TAPState
*s
)
1332 qemu_set_fd_handler2(s
->fd
,
1333 s
->read_poll
? tap_can_send
: NULL
,
1334 s
->read_poll
? tap_send
: NULL
,
1335 s
->write_poll
? tap_writable
: NULL
,
1339 static void tap_read_poll(TAPState
*s
, int enable
)
1341 s
->read_poll
= !!enable
;
1342 tap_update_fd_handler(s
);
1345 static void tap_write_poll(TAPState
*s
, int enable
)
1347 s
->write_poll
= !!enable
;
1348 tap_update_fd_handler(s
);
1351 static void tap_writable(void *opaque
)
1353 TAPState
*s
= opaque
;
1355 tap_write_poll(s
, 0);
1357 qemu_flush_queued_packets(s
->vc
);
1360 static ssize_t
tap_write_packet(TAPState
*s
, const struct iovec
*iov
, int iovcnt
)
1365 len
= writev(s
->fd
, iov
, iovcnt
);
1366 } while (len
== -1 && errno
== EINTR
);
1368 if (len
== -1 && errno
== EAGAIN
) {
1369 tap_write_poll(s
, 1);
1376 static ssize_t
tap_receive_iov(VLANClientState
*vc
, const struct iovec
*iov
,
1379 TAPState
*s
= vc
->opaque
;
1380 const struct iovec
*iovp
= iov
;
1381 struct iovec iov_copy
[iovcnt
+ 1];
1382 struct virtio_net_hdr hdr
= { 0, };
1384 if (s
->has_vnet_hdr
&& !s
->using_vnet_hdr
) {
1385 iov_copy
[0].iov_base
= &hdr
;
1386 iov_copy
[0].iov_len
= sizeof(hdr
);
1387 memcpy(&iov_copy
[1], iov
, iovcnt
* sizeof(*iov
));
1392 return tap_write_packet(s
, iovp
, iovcnt
);
1395 static ssize_t
tap_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1397 TAPState
*s
= vc
->opaque
;
1398 struct iovec iov
[2];
1400 struct virtio_net_hdr hdr
= { 0, };
1402 if (s
->has_vnet_hdr
&& !s
->using_vnet_hdr
) {
1403 iov
[iovcnt
].iov_base
= &hdr
;
1404 iov
[iovcnt
].iov_len
= sizeof(hdr
);
1408 iov
[iovcnt
].iov_base
= (char *)buf
;
1409 iov
[iovcnt
].iov_len
= size
;
1412 return tap_write_packet(s
, iov
, iovcnt
);
1415 static int tap_can_send(void *opaque
)
1417 TAPState
*s
= opaque
;
1419 return qemu_can_send_packet(s
->vc
);
1423 static ssize_t
tap_read_packet(int tapfd
, uint8_t *buf
, int maxlen
)
1428 sbuf
.maxlen
= maxlen
;
1429 sbuf
.buf
= (char *)buf
;
1431 return getmsg(tapfd
, NULL
, &sbuf
, &f
) >= 0 ? sbuf
.len
: -1;
1434 static ssize_t
tap_read_packet(int tapfd
, uint8_t *buf
, int maxlen
)
1436 return read(tapfd
, buf
, maxlen
);
1440 static void tap_send_completed(VLANClientState
*vc
, ssize_t len
)
1442 TAPState
*s
= vc
->opaque
;
1443 tap_read_poll(s
, 1);
1446 static void tap_send(void *opaque
)
1448 TAPState
*s
= opaque
;
1452 uint8_t *buf
= s
->buf
;
1454 size
= tap_read_packet(s
->fd
, s
->buf
, sizeof(s
->buf
));
1459 if (s
->has_vnet_hdr
&& !s
->using_vnet_hdr
) {
1460 buf
+= sizeof(struct virtio_net_hdr
);
1461 size
-= sizeof(struct virtio_net_hdr
);
1464 size
= qemu_send_packet_async(s
->vc
, buf
, size
, tap_send_completed
);
1466 tap_read_poll(s
, 0);
1471 /* sndbuf should be set to a value lower than the tx queue
1472 * capacity of any destination network interface.
1473 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1474 * a good default, given a 1500 byte MTU.
1476 #define TAP_DEFAULT_SNDBUF 1024*1024
1478 static int tap_set_sndbuf(TAPState
*s
, QemuOpts
*opts
)
1482 sndbuf
= qemu_opt_get_size(opts
, "sndbuf", TAP_DEFAULT_SNDBUF
);
1487 if (ioctl(s
->fd
, TUNSETSNDBUF
, &sndbuf
) == -1 && qemu_opt_get(opts
, "sndbuf")) {
1488 qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno
));
1494 int tap_has_vnet_hdr(VLANClientState
*vc
)
1496 TAPState
*s
= vc
->opaque
;
1498 assert(vc
->type
== NET_CLIENT_TYPE_TAP
);
1500 return s
->has_vnet_hdr
;
1503 void tap_using_vnet_hdr(VLANClientState
*vc
, int using_vnet_hdr
)
1505 TAPState
*s
= vc
->opaque
;
1507 using_vnet_hdr
= using_vnet_hdr
!= 0;
1509 assert(vc
->type
== NET_CLIENT_TYPE_TAP
);
1510 assert(s
->has_vnet_hdr
== using_vnet_hdr
);
1512 s
->using_vnet_hdr
= using_vnet_hdr
;
1515 static int tap_probe_vnet_hdr(int fd
)
1519 if (ioctl(fd
, TUNGETIFF
, &ifr
) != 0) {
1520 qemu_error("TUNGETIFF ioctl() failed: %s\n", strerror(errno
));
1524 return ifr
.ifr_flags
& IFF_VNET_HDR
;
1527 static void tap_cleanup(VLANClientState
*vc
)
1529 TAPState
*s
= vc
->opaque
;
1531 qemu_purge_queued_packets(vc
);
1533 if (s
->down_script
[0])
1534 launch_script(s
->down_script
, s
->down_script_arg
, s
->fd
);
1536 tap_read_poll(s
, 0);
1537 tap_write_poll(s
, 0);
1544 static TAPState
*net_tap_fd_init(VLANState
*vlan
,
1552 s
= qemu_mallocz(sizeof(TAPState
));
1554 s
->has_vnet_hdr
= vnet_hdr
!= 0;
1555 s
->using_vnet_hdr
= 0;
1556 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_TAP
,
1557 vlan
, NULL
, model
, name
, NULL
,
1558 tap_receive
, NULL
, tap_receive_iov
,
1560 tap_read_poll(s
, 1);
1564 #if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
1565 static int tap_open(char *ifname
, int ifname_size
,
1566 int *vnet_hdr
, int vnet_hdr_required
)
1572 TFR(fd
= open("/dev/tap", O_RDWR
));
1574 fprintf(stderr
, "warning: could not open /dev/tap: no virtual network emulation\n");
1579 dev
= devname(s
.st_rdev
, S_IFCHR
);
1580 pstrcpy(ifname
, ifname_size
, dev
);
1582 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1585 #elif defined(__sun__)
1586 #define TUNNEWPPA (('T'<<16) | 0x0001)
1588 * Allocate TAP device, returns opened fd.
1589 * Stores dev name in the first arg(must be large enough).
1591 static int tap_alloc(char *dev
, size_t dev_size
)
1593 int tap_fd
, if_fd
, ppa
= -1;
1594 static int ip_fd
= 0;
1597 static int arp_fd
= 0;
1598 int ip_muxid
, arp_muxid
;
1599 struct strioctl strioc_if
, strioc_ppa
;
1600 int link_type
= I_PLINK
;;
1602 char actual_name
[32] = "";
1604 memset(&ifr
, 0x0, sizeof(ifr
));
1608 while( *ptr
&& !qemu_isdigit((int)*ptr
) ) ptr
++;
1612 /* Check if IP device was opened */
1616 TFR(ip_fd
= open("/dev/udp", O_RDWR
, 0));
1618 syslog(LOG_ERR
, "Can't open /dev/ip (actually /dev/udp)");
1622 TFR(tap_fd
= open("/dev/tap", O_RDWR
, 0));
1624 syslog(LOG_ERR
, "Can't open /dev/tap");
1628 /* Assign a new PPA and get its unit number. */
1629 strioc_ppa
.ic_cmd
= TUNNEWPPA
;
1630 strioc_ppa
.ic_timout
= 0;
1631 strioc_ppa
.ic_len
= sizeof(ppa
);
1632 strioc_ppa
.ic_dp
= (char *)&ppa
;
1633 if ((ppa
= ioctl (tap_fd
, I_STR
, &strioc_ppa
)) < 0)
1634 syslog (LOG_ERR
, "Can't assign new interface");
1636 TFR(if_fd
= open("/dev/tap", O_RDWR
, 0));
1638 syslog(LOG_ERR
, "Can't open /dev/tap (2)");
1641 if(ioctl(if_fd
, I_PUSH
, "ip") < 0){
1642 syslog(LOG_ERR
, "Can't push IP module");
1646 if (ioctl(if_fd
, SIOCGLIFFLAGS
, &ifr
) < 0)
1647 syslog(LOG_ERR
, "Can't get flags\n");
1649 snprintf (actual_name
, 32, "tap%d", ppa
);
1650 pstrcpy(ifr
.lifr_name
, sizeof(ifr
.lifr_name
), actual_name
);
1653 /* Assign ppa according to the unit number returned by tun device */
1655 if (ioctl (if_fd
, SIOCSLIFNAME
, &ifr
) < 0)
1656 syslog (LOG_ERR
, "Can't set PPA %d", ppa
);
1657 if (ioctl(if_fd
, SIOCGLIFFLAGS
, &ifr
) <0)
1658 syslog (LOG_ERR
, "Can't get flags\n");
1659 /* Push arp module to if_fd */
1660 if (ioctl (if_fd
, I_PUSH
, "arp") < 0)
1661 syslog (LOG_ERR
, "Can't push ARP module (2)");
1663 /* Push arp module to ip_fd */
1664 if (ioctl (ip_fd
, I_POP
, NULL
) < 0)
1665 syslog (LOG_ERR
, "I_POP failed\n");
1666 if (ioctl (ip_fd
, I_PUSH
, "arp") < 0)
1667 syslog (LOG_ERR
, "Can't push ARP module (3)\n");
1669 TFR(arp_fd
= open ("/dev/tap", O_RDWR
, 0));
1671 syslog (LOG_ERR
, "Can't open %s\n", "/dev/tap");
1673 /* Set ifname to arp */
1674 strioc_if
.ic_cmd
= SIOCSLIFNAME
;
1675 strioc_if
.ic_timout
= 0;
1676 strioc_if
.ic_len
= sizeof(ifr
);
1677 strioc_if
.ic_dp
= (char *)&ifr
;
1678 if (ioctl(arp_fd
, I_STR
, &strioc_if
) < 0){
1679 syslog (LOG_ERR
, "Can't set ifname to arp\n");
1682 if((ip_muxid
= ioctl(ip_fd
, I_LINK
, if_fd
)) < 0){
1683 syslog(LOG_ERR
, "Can't link TAP device to IP");
1687 if ((arp_muxid
= ioctl (ip_fd
, link_type
, arp_fd
)) < 0)
1688 syslog (LOG_ERR
, "Can't link TAP device to ARP");
1692 memset(&ifr
, 0x0, sizeof(ifr
));
1693 pstrcpy(ifr
.lifr_name
, sizeof(ifr
.lifr_name
), actual_name
);
1694 ifr
.lifr_ip_muxid
= ip_muxid
;
1695 ifr
.lifr_arp_muxid
= arp_muxid
;
1697 if (ioctl (ip_fd
, SIOCSLIFMUXID
, &ifr
) < 0)
1699 ioctl (ip_fd
, I_PUNLINK
, arp_muxid
);
1700 ioctl (ip_fd
, I_PUNLINK
, ip_muxid
);
1701 syslog (LOG_ERR
, "Can't set multiplexor id");
1704 snprintf(dev
, dev_size
, "tap%d", ppa
);
1708 static int tap_open(char *ifname
, int ifname_size
,
1709 int *vnet_hdr
, int vnet_hdr_required
)
1713 if( (fd
= tap_alloc(dev
, sizeof(dev
))) < 0 ){
1714 fprintf(stderr
, "Cannot allocate TAP device\n");
1717 pstrcpy(ifname
, ifname_size
, dev
);
1718 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1721 #elif defined (_AIX)
1722 static int tap_open(char *ifname
, int ifname_size
,
1723 int *vnet_hdr
, int vnet_hdr_required
)
1725 fprintf (stderr
, "no tap on AIX\n");
1729 static int tap_open(char *ifname
, int ifname_size
,
1730 int *vnet_hdr
, int vnet_hdr_required
)
1735 TFR(fd
= open("/dev/net/tun", O_RDWR
));
1737 fprintf(stderr
, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1740 memset(&ifr
, 0, sizeof(ifr
));
1741 ifr
.ifr_flags
= IFF_TAP
| IFF_NO_PI
;
1744 unsigned int features
;
1746 if (ioctl(fd
, TUNGETFEATURES
, &features
) == 0 &&
1747 features
& IFF_VNET_HDR
) {
1749 ifr
.ifr_flags
|= IFF_VNET_HDR
;
1752 if (vnet_hdr_required
&& !*vnet_hdr
) {
1753 qemu_error("vnet_hdr=1 requested, but no kernel "
1754 "support for IFF_VNET_HDR available");
1760 if (ifname
[0] != '\0')
1761 pstrcpy(ifr
.ifr_name
, IFNAMSIZ
, ifname
);
1763 pstrcpy(ifr
.ifr_name
, IFNAMSIZ
, "tap%d");
1764 ret
= ioctl(fd
, TUNSETIFF
, (void *) &ifr
);
1766 fprintf(stderr
, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1770 pstrcpy(ifname
, ifname_size
, ifr
.ifr_name
);
1771 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1776 static int launch_script(const char *setup_script
, const char *ifname
, int fd
)
1778 sigset_t oldmask
, mask
;
1784 sigaddset(&mask
, SIGCHLD
);
1785 sigprocmask(SIG_BLOCK
, &mask
, &oldmask
);
1787 /* try to launch network script */
1790 int open_max
= sysconf(_SC_OPEN_MAX
), i
;
1792 for (i
= 0; i
< open_max
; i
++) {
1793 if (i
!= STDIN_FILENO
&&
1794 i
!= STDOUT_FILENO
&&
1795 i
!= STDERR_FILENO
&&
1801 *parg
++ = (char *)setup_script
;
1802 *parg
++ = (char *)ifname
;
1804 execv(setup_script
, args
);
1806 } else if (pid
> 0) {
1807 while (waitpid(pid
, &status
, 0) != pid
) {
1810 sigprocmask(SIG_SETMASK
, &oldmask
, NULL
);
1812 if (WIFEXITED(status
) && WEXITSTATUS(status
) == 0) {
1816 fprintf(stderr
, "%s: could not launch network script\n", setup_script
);
1820 static int net_tap_init(QemuOpts
*opts
, int *vnet_hdr
)
1822 int fd
, vnet_hdr_required
;
1823 char ifname
[128] = {0,};
1824 const char *setup_script
;
1826 if (qemu_opt_get(opts
, "ifname")) {
1827 pstrcpy(ifname
, sizeof(ifname
), qemu_opt_get(opts
, "ifname"));
1830 *vnet_hdr
= qemu_opt_get_bool(opts
, "vnet_hdr", 1);
1831 if (qemu_opt_get(opts
, "vnet_hdr")) {
1832 vnet_hdr_required
= *vnet_hdr
;
1834 vnet_hdr_required
= 0;
1837 TFR(fd
= tap_open(ifname
, sizeof(ifname
), vnet_hdr
, vnet_hdr_required
));
1842 setup_script
= qemu_opt_get(opts
, "script");
1844 setup_script
[0] != '\0' &&
1845 strcmp(setup_script
, "no") != 0 &&
1846 launch_script(setup_script
, ifname
, fd
)) {
1851 qemu_opt_set(opts
, "ifname", ifname
);
1856 #endif /* !_WIN32 */
1858 #if defined(CONFIG_VDE)
1859 typedef struct VDEState
{
1860 VLANClientState
*vc
;
1864 static void vde_to_qemu(void *opaque
)
1866 VDEState
*s
= opaque
;
1870 size
= vde_recv(s
->vde
, (char *)buf
, sizeof(buf
), 0);
1872 qemu_send_packet(s
->vc
, buf
, size
);
1876 static ssize_t
vde_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1878 VDEState
*s
= vc
->opaque
;
1882 ret
= vde_send(s
->vde
, (const char *)buf
, size
, 0);
1883 } while (ret
< 0 && errno
== EINTR
);
1888 static void vde_cleanup(VLANClientState
*vc
)
1890 VDEState
*s
= vc
->opaque
;
1891 qemu_set_fd_handler(vde_datafd(s
->vde
), NULL
, NULL
, NULL
);
1896 static int net_vde_init(VLANState
*vlan
, const char *model
,
1897 const char *name
, const char *sock
,
1898 int port
, const char *group
, int mode
)
1901 char *init_group
= (char *)group
;
1902 char *init_sock
= (char *)sock
;
1904 struct vde_open_args args
= {
1906 .group
= init_group
,
1910 s
= qemu_mallocz(sizeof(VDEState
));
1911 s
->vde
= vde_open(init_sock
, (char *)"QEMU", &args
);
1916 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_VDE
,
1917 vlan
, NULL
, model
, name
, NULL
,
1918 vde_receive
, NULL
, NULL
,
1920 qemu_set_fd_handler(vde_datafd(s
->vde
), vde_to_qemu
, NULL
, s
);
1921 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
), "sock=%s,fd=%d",
1922 sock
, vde_datafd(s
->vde
));
1927 /* network connection */
1928 typedef struct NetSocketState
{
1929 VLANClientState
*vc
;
1931 int state
; /* 0 = getting length, 1 = getting data */
1933 unsigned int packet_len
;
1935 struct sockaddr_in dgram_dst
; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1938 typedef struct NetSocketListenState
{
1943 } NetSocketListenState
;
1945 /* XXX: we consider we can send the whole packet without blocking */
1946 static ssize_t
net_socket_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1948 NetSocketState
*s
= vc
->opaque
;
1952 send_all(s
->fd
, (const uint8_t *)&len
, sizeof(len
));
1953 return send_all(s
->fd
, buf
, size
);
1956 static ssize_t
net_socket_receive_dgram(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1958 NetSocketState
*s
= vc
->opaque
;
1960 return sendto(s
->fd
, (const void *)buf
, size
, 0,
1961 (struct sockaddr
*)&s
->dgram_dst
, sizeof(s
->dgram_dst
));
1964 static void net_socket_send(void *opaque
)
1966 NetSocketState
*s
= opaque
;
1972 size
= recv(s
->fd
, (void *)buf1
, sizeof(buf1
), 0);
1974 err
= socket_error();
1975 if (err
!= EWOULDBLOCK
)
1977 } else if (size
== 0) {
1978 /* end of connection */
1980 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
1986 /* reassemble a packet from the network */
1992 memcpy(s
->buf
+ s
->index
, buf
, l
);
1996 if (s
->index
== 4) {
1998 s
->packet_len
= ntohl(*(uint32_t *)s
->buf
);
2004 l
= s
->packet_len
- s
->index
;
2007 if (s
->index
+ l
<= sizeof(s
->buf
)) {
2008 memcpy(s
->buf
+ s
->index
, buf
, l
);
2010 fprintf(stderr
, "serious error: oversized packet received,"
2011 "connection terminated.\n");
2019 if (s
->index
>= s
->packet_len
) {
2020 qemu_send_packet(s
->vc
, s
->buf
, s
->packet_len
);
2029 static void net_socket_send_dgram(void *opaque
)
2031 NetSocketState
*s
= opaque
;
2034 size
= recv(s
->fd
, (void *)s
->buf
, sizeof(s
->buf
), 0);
2038 /* end of connection */
2039 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
2042 qemu_send_packet(s
->vc
, s
->buf
, size
);
2045 static int net_socket_mcast_create(struct sockaddr_in
*mcastaddr
)
2050 if (!IN_MULTICAST(ntohl(mcastaddr
->sin_addr
.s_addr
))) {
2051 fprintf(stderr
, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
2052 inet_ntoa(mcastaddr
->sin_addr
),
2053 (int)ntohl(mcastaddr
->sin_addr
.s_addr
));
2057 fd
= socket(PF_INET
, SOCK_DGRAM
, 0);
2059 perror("socket(PF_INET, SOCK_DGRAM)");
2064 ret
=setsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
,
2065 (const char *)&val
, sizeof(val
));
2067 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
2071 ret
= bind(fd
, (struct sockaddr
*)mcastaddr
, sizeof(*mcastaddr
));
2077 /* Add host to multicast group */
2078 imr
.imr_multiaddr
= mcastaddr
->sin_addr
;
2079 imr
.imr_interface
.s_addr
= htonl(INADDR_ANY
);
2081 ret
= setsockopt(fd
, IPPROTO_IP
, IP_ADD_MEMBERSHIP
,
2082 (const char *)&imr
, sizeof(struct ip_mreq
));
2084 perror("setsockopt(IP_ADD_MEMBERSHIP)");
2088 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
2090 ret
=setsockopt(fd
, IPPROTO_IP
, IP_MULTICAST_LOOP
,
2091 (const char *)&val
, sizeof(val
));
2093 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
2097 socket_set_nonblock(fd
);
2105 static void net_socket_cleanup(VLANClientState
*vc
)
2107 NetSocketState
*s
= vc
->opaque
;
2108 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
2113 static NetSocketState
*net_socket_fd_init_dgram(VLANState
*vlan
,
2116 int fd
, int is_connected
)
2118 struct sockaddr_in saddr
;
2120 socklen_t saddr_len
;
2123 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
2124 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
2125 * by ONLY ONE process: we must "clone" this dgram socket --jjo
2129 if (getsockname(fd
, (struct sockaddr
*) &saddr
, &saddr_len
) == 0) {
2131 if (saddr
.sin_addr
.s_addr
==0) {
2132 fprintf(stderr
, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
2136 /* clone dgram socket */
2137 newfd
= net_socket_mcast_create(&saddr
);
2139 /* error already reported by net_socket_mcast_create() */
2143 /* clone newfd to fd, close newfd */
2148 fprintf(stderr
, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2149 fd
, strerror(errno
));
2154 s
= qemu_mallocz(sizeof(NetSocketState
));
2157 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET
,
2158 vlan
, NULL
, model
, name
, NULL
,
2159 net_socket_receive_dgram
, NULL
, NULL
,
2160 net_socket_cleanup
, s
);
2161 qemu_set_fd_handler(s
->fd
, net_socket_send_dgram
, NULL
, s
);
2163 /* mcast: save bound address as dst */
2164 if (is_connected
) s
->dgram_dst
=saddr
;
2166 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2167 "socket: fd=%d (%s mcast=%s:%d)",
2168 fd
, is_connected
? "cloned" : "",
2169 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2173 static void net_socket_connect(void *opaque
)
2175 NetSocketState
*s
= opaque
;
2176 qemu_set_fd_handler(s
->fd
, net_socket_send
, NULL
, s
);
2179 static NetSocketState
*net_socket_fd_init_stream(VLANState
*vlan
,
2182 int fd
, int is_connected
)
2185 s
= qemu_mallocz(sizeof(NetSocketState
));
2187 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET
,
2188 vlan
, NULL
, model
, name
, NULL
,
2189 net_socket_receive
, NULL
, NULL
,
2190 net_socket_cleanup
, s
);
2191 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2192 "socket: fd=%d", fd
);
2194 net_socket_connect(s
);
2196 qemu_set_fd_handler(s
->fd
, NULL
, net_socket_connect
, s
);
2201 static NetSocketState
*net_socket_fd_init(VLANState
*vlan
,
2202 const char *model
, const char *name
,
2203 int fd
, int is_connected
)
2205 int so_type
= -1, optlen
=sizeof(so_type
);
2207 if(getsockopt(fd
, SOL_SOCKET
, SO_TYPE
, (char *)&so_type
,
2208 (socklen_t
*)&optlen
)< 0) {
2209 fprintf(stderr
, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd
);
2214 return net_socket_fd_init_dgram(vlan
, model
, name
, fd
, is_connected
);
2216 return net_socket_fd_init_stream(vlan
, model
, name
, fd
, is_connected
);
2218 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2219 fprintf(stderr
, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type
, fd
);
2220 return net_socket_fd_init_stream(vlan
, model
, name
, fd
, is_connected
);
2225 static void net_socket_accept(void *opaque
)
2227 NetSocketListenState
*s
= opaque
;
2229 struct sockaddr_in saddr
;
2234 len
= sizeof(saddr
);
2235 fd
= accept(s
->fd
, (struct sockaddr
*)&saddr
, &len
);
2236 if (fd
< 0 && errno
!= EINTR
) {
2238 } else if (fd
>= 0) {
2242 s1
= net_socket_fd_init(s
->vlan
, s
->model
, s
->name
, fd
, 1);
2246 snprintf(s1
->vc
->info_str
, sizeof(s1
->vc
->info_str
),
2247 "socket: connection from %s:%d",
2248 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2252 static int net_socket_listen_init(VLANState
*vlan
,
2255 const char *host_str
)
2257 NetSocketListenState
*s
;
2259 struct sockaddr_in saddr
;
2261 if (parse_host_port(&saddr
, host_str
) < 0)
2264 s
= qemu_mallocz(sizeof(NetSocketListenState
));
2266 fd
= socket(PF_INET
, SOCK_STREAM
, 0);
2271 socket_set_nonblock(fd
);
2273 /* allow fast reuse */
2275 setsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, (const char *)&val
, sizeof(val
));
2277 ret
= bind(fd
, (struct sockaddr
*)&saddr
, sizeof(saddr
));
2282 ret
= listen(fd
, 0);
2288 s
->model
= qemu_strdup(model
);
2289 s
->name
= name
? qemu_strdup(name
) : NULL
;
2291 qemu_set_fd_handler(fd
, net_socket_accept
, NULL
, s
);
2295 static int net_socket_connect_init(VLANState
*vlan
,
2298 const char *host_str
)
2301 int fd
, connected
, ret
, err
;
2302 struct sockaddr_in saddr
;
2304 if (parse_host_port(&saddr
, host_str
) < 0)
2307 fd
= socket(PF_INET
, SOCK_STREAM
, 0);
2312 socket_set_nonblock(fd
);
2316 ret
= connect(fd
, (struct sockaddr
*)&saddr
, sizeof(saddr
));
2318 err
= socket_error();
2319 if (err
== EINTR
|| err
== EWOULDBLOCK
) {
2320 } else if (err
== EINPROGRESS
) {
2323 } else if (err
== WSAEALREADY
) {
2336 s
= net_socket_fd_init(vlan
, model
, name
, fd
, connected
);
2339 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2340 "socket: connect to %s:%d",
2341 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2345 static int net_socket_mcast_init(VLANState
*vlan
,
2348 const char *host_str
)
2352 struct sockaddr_in saddr
;
2354 if (parse_host_port(&saddr
, host_str
) < 0)
2358 fd
= net_socket_mcast_create(&saddr
);
2362 s
= net_socket_fd_init(vlan
, model
, name
, fd
, 0);
2366 s
->dgram_dst
= saddr
;
2368 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2369 "socket: mcast=%s:%d",
2370 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2375 typedef struct DumpState
{
2376 VLANClientState
*pcap_vc
;
2381 #define PCAP_MAGIC 0xa1b2c3d4
2383 struct pcap_file_hdr
{
2385 uint16_t version_major
;
2386 uint16_t version_minor
;
2393 struct pcap_sf_pkthdr
{
2402 static ssize_t
dump_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
2404 DumpState
*s
= vc
->opaque
;
2405 struct pcap_sf_pkthdr hdr
;
2409 /* Early return in case of previous error. */
2414 ts
= muldiv64(qemu_get_clock(vm_clock
), 1000000, get_ticks_per_sec());
2415 caplen
= size
> s
->pcap_caplen
? s
->pcap_caplen
: size
;
2417 hdr
.ts
.tv_sec
= ts
/ 1000000;
2418 hdr
.ts
.tv_usec
= ts
% 1000000;
2419 hdr
.caplen
= caplen
;
2421 if (write(s
->fd
, &hdr
, sizeof(hdr
)) != sizeof(hdr
) ||
2422 write(s
->fd
, buf
, caplen
) != caplen
) {
2423 qemu_log("-net dump write error - stop dump\n");
2431 static void net_dump_cleanup(VLANClientState
*vc
)
2433 DumpState
*s
= vc
->opaque
;
2439 static int net_dump_init(VLANState
*vlan
, const char *device
,
2440 const char *name
, const char *filename
, int len
)
2442 struct pcap_file_hdr hdr
;
2445 s
= qemu_malloc(sizeof(DumpState
));
2447 s
->fd
= open(filename
, O_CREAT
| O_WRONLY
| O_BINARY
, 0644);
2449 qemu_error("-net dump: can't open %s\n", filename
);
2453 s
->pcap_caplen
= len
;
2455 hdr
.magic
= PCAP_MAGIC
;
2456 hdr
.version_major
= 2;
2457 hdr
.version_minor
= 4;
2460 hdr
.snaplen
= s
->pcap_caplen
;
2463 if (write(s
->fd
, &hdr
, sizeof(hdr
)) < sizeof(hdr
)) {
2464 qemu_error("-net dump write error: %s\n", strerror(errno
));
2470 s
->pcap_vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP
,
2471 vlan
, NULL
, device
, name
, NULL
,
2472 dump_receive
, NULL
, NULL
,
2473 net_dump_cleanup
, s
);
2474 snprintf(s
->pcap_vc
->info_str
, sizeof(s
->pcap_vc
->info_str
),
2475 "dump to %s (len=%d)", filename
, len
);
2479 /* find or alloc a new VLAN */
2480 VLANState
*qemu_find_vlan(int id
, int allocate
)
2484 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
2485 if (vlan
->id
== id
) {
2494 vlan
= qemu_mallocz(sizeof(VLANState
));
2496 QTAILQ_INIT(&vlan
->clients
);
2498 vlan
->send_queue
= qemu_new_net_queue(qemu_vlan_deliver_packet
,
2499 qemu_vlan_deliver_packet_iov
,
2502 QTAILQ_INSERT_TAIL(&vlans
, vlan
, next
);
2507 VLANClientState
*qemu_find_netdev(const char *id
)
2509 VLANClientState
*vc
;
2511 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
2512 if (!strcmp(vc
->name
, id
)) {
2520 static int nic_get_free_idx(void)
2524 for (index
= 0; index
< MAX_NICS
; index
++)
2525 if (!nd_table
[index
].used
)
2530 int qemu_show_nic_models(const char *arg
, const char *const *models
)
2534 if (!arg
|| strcmp(arg
, "?"))
2537 fprintf(stderr
, "qemu: Supported NIC models: ");
2538 for (i
= 0 ; models
[i
]; i
++)
2539 fprintf(stderr
, "%s%c", models
[i
], models
[i
+1] ? ',' : '\n');
2543 void qemu_check_nic_model(NICInfo
*nd
, const char *model
)
2545 const char *models
[2];
2550 if (qemu_show_nic_models(nd
->model
, models
))
2552 if (qemu_find_nic_model(nd
, models
, model
) < 0)
2556 int qemu_find_nic_model(NICInfo
*nd
, const char * const *models
,
2557 const char *default_model
)
2562 nd
->model
= qemu_strdup(default_model
);
2564 for (i
= 0 ; models
[i
]; i
++) {
2565 if (strcmp(nd
->model
, models
[i
]) == 0)
2569 qemu_error("qemu: Unsupported NIC model: %s\n", nd
->model
);
2573 static int net_handle_fd_param(Monitor
*mon
, const char *param
)
2575 if (!qemu_isdigit(param
[0])) {
2578 fd
= monitor_get_fd(mon
, param
);
2580 qemu_error("No file descriptor named %s found", param
);
2586 return strtol(param
, NULL
, 0);
2590 static int net_init_nic(QemuOpts
*opts
,
2599 idx
= nic_get_free_idx();
2600 if (idx
== -1 || nb_nics
>= MAX_NICS
) {
2601 qemu_error("Too Many NICs\n");
2605 nd
= &nd_table
[idx
];
2607 memset(nd
, 0, sizeof(*nd
));
2609 if ((netdev
= qemu_opt_get(opts
, "netdev"))) {
2610 nd
->netdev
= qemu_find_netdev(netdev
);
2612 qemu_error("netdev '%s' not found\n", netdev
);
2620 nd
->name
= qemu_strdup(name
);
2622 if (qemu_opt_get(opts
, "model")) {
2623 nd
->model
= qemu_strdup(qemu_opt_get(opts
, "model"));
2625 if (qemu_opt_get(opts
, "addr")) {
2626 nd
->devaddr
= qemu_strdup(qemu_opt_get(opts
, "addr"));
2629 nd
->macaddr
[0] = 0x52;
2630 nd
->macaddr
[1] = 0x54;
2631 nd
->macaddr
[2] = 0x00;
2632 nd
->macaddr
[3] = 0x12;
2633 nd
->macaddr
[4] = 0x34;
2634 nd
->macaddr
[5] = 0x56 + idx
;
2636 if (qemu_opt_get(opts
, "macaddr") &&
2637 parse_macaddr(nd
->macaddr
, qemu_opt_get(opts
, "macaddr")) < 0) {
2638 qemu_error("invalid syntax for ethernet address\n");
2642 nd
->nvectors
= qemu_opt_get_number(opts
, "vectors", NIC_NVECTORS_UNSPECIFIED
);
2643 if (nd
->nvectors
!= NIC_NVECTORS_UNSPECIFIED
&&
2644 (nd
->nvectors
< 0 || nd
->nvectors
> 0x7ffffff)) {
2645 qemu_error("invalid # of vectors: %d\n", nd
->nvectors
);
2651 nd
->vlan
->nb_guest_devs
++;
2658 #if defined(CONFIG_SLIRP)
2659 static int net_init_slirp_configs(const char *name
, const char *value
, void *opaque
)
2661 struct slirp_config_str
*config
;
2663 if (strcmp(name
, "hostfwd") != 0 && strcmp(name
, "guestfwd") != 0) {
2667 config
= qemu_mallocz(sizeof(*config
));
2669 pstrcpy(config
->str
, sizeof(config
->str
), value
);
2671 if (!strcmp(name
, "hostfwd")) {
2672 config
->flags
= SLIRP_CFG_HOSTFWD
;
2675 config
->next
= slirp_configs
;
2676 slirp_configs
= config
;
2681 static int net_init_slirp(QemuOpts
*opts
,
2686 struct slirp_config_str
*config
;
2688 const char *vhostname
;
2689 const char *vdhcp_start
;
2690 const char *vnamesrv
;
2691 const char *tftp_export
;
2692 const char *bootfile
;
2693 const char *smb_export
;
2694 const char *vsmbsrv
;
2699 vhost
= qemu_opt_get(opts
, "host");
2700 vhostname
= qemu_opt_get(opts
, "hostname");
2701 vdhcp_start
= qemu_opt_get(opts
, "dhcpstart");
2702 vnamesrv
= qemu_opt_get(opts
, "dns");
2703 tftp_export
= qemu_opt_get(opts
, "tftp");
2704 bootfile
= qemu_opt_get(opts
, "bootfile");
2705 smb_export
= qemu_opt_get(opts
, "smb");
2706 vsmbsrv
= qemu_opt_get(opts
, "smbserver");
2708 if (qemu_opt_get(opts
, "ip")) {
2709 const char *ip
= qemu_opt_get(opts
, "ip");
2710 int l
= strlen(ip
) + strlen("/24") + 1;
2712 vnet
= qemu_malloc(l
);
2714 /* emulate legacy ip= parameter */
2715 pstrcpy(vnet
, l
, ip
);
2716 pstrcat(vnet
, l
, "/24");
2719 if (qemu_opt_get(opts
, "net")) {
2723 vnet
= qemu_strdup(qemu_opt_get(opts
, "net"));
2726 if (qemu_opt_get(opts
, "restrict") &&
2727 qemu_opt_get(opts
, "restrict")[0] == 'y') {
2731 qemu_opt_foreach(opts
, net_init_slirp_configs
, NULL
, 0);
2733 ret
= net_slirp_init(vlan
, "user", name
, restricted
, vnet
, vhost
,
2734 vhostname
, tftp_export
, bootfile
, vdhcp_start
,
2735 vnamesrv
, smb_export
, vsmbsrv
);
2737 while (slirp_configs
) {
2738 config
= slirp_configs
;
2739 slirp_configs
= config
->next
;
2743 if (ret
!= -1 && vlan
) {
2744 vlan
->nb_host_devs
++;
2751 #endif /* CONFIG_SLIRP */
2754 static int net_init_tap_win32(QemuOpts
*opts
,
2761 ifname
= qemu_opt_get(opts
, "ifname");
2764 qemu_error("tap: no interface name\n");
2768 if (tap_win32_init(vlan
, "tap", name
, ifname
) == -1) {
2773 vlan
->nb_host_devs
++;
2778 #elif !defined(_AIX)
2779 static int net_init_tap(QemuOpts
*opts
,
2787 if (qemu_opt_get(opts
, "fd")) {
2788 if (qemu_opt_get(opts
, "ifname") ||
2789 qemu_opt_get(opts
, "script") ||
2790 qemu_opt_get(opts
, "downscript") ||
2791 qemu_opt_get(opts
, "vnet_hdr")) {
2792 qemu_error("ifname=, script=, downscript= and vnet_hdr= is invalid with fd=\n");
2796 fd
= net_handle_fd_param(mon
, qemu_opt_get(opts
, "fd"));
2801 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
2803 vnet_hdr
= tap_probe_vnet_hdr(fd
);
2805 if (!qemu_opt_get(opts
, "script")) {
2806 qemu_opt_set(opts
, "script", DEFAULT_NETWORK_SCRIPT
);
2809 if (!qemu_opt_get(opts
, "downscript")) {
2810 qemu_opt_set(opts
, "downscript", DEFAULT_NETWORK_DOWN_SCRIPT
);
2813 fd
= net_tap_init(opts
, &vnet_hdr
);
2816 s
= net_tap_fd_init(vlan
, "tap", name
, fd
, vnet_hdr
);
2822 if (tap_set_sndbuf(s
, opts
) < 0) {
2826 if (qemu_opt_get(opts
, "fd")) {
2827 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
), "fd=%d", fd
);
2829 const char *ifname
, *script
, *downscript
;
2831 ifname
= qemu_opt_get(opts
, "ifname");
2832 script
= qemu_opt_get(opts
, "script");
2833 downscript
= qemu_opt_get(opts
, "downscript");
2835 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2836 "ifname=%s,script=%s,downscript=%s",
2837 ifname
, script
, downscript
);
2839 if (strcmp(downscript
, "no") != 0) {
2840 snprintf(s
->down_script
, sizeof(s
->down_script
), "%s", downscript
);
2841 snprintf(s
->down_script_arg
, sizeof(s
->down_script_arg
), "%s", ifname
);
2846 vlan
->nb_host_devs
++;
2853 static int net_init_socket(QemuOpts
*opts
,
2858 if (qemu_opt_get(opts
, "fd")) {
2861 if (qemu_opt_get(opts
, "listen") ||
2862 qemu_opt_get(opts
, "connect") ||
2863 qemu_opt_get(opts
, "mcast")) {
2864 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2868 fd
= net_handle_fd_param(mon
, qemu_opt_get(opts
, "fd"));
2873 if (!net_socket_fd_init(vlan
, "socket", name
, fd
, 1)) {
2877 } else if (qemu_opt_get(opts
, "listen")) {
2880 if (qemu_opt_get(opts
, "fd") ||
2881 qemu_opt_get(opts
, "connect") ||
2882 qemu_opt_get(opts
, "mcast")) {
2883 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2887 listen
= qemu_opt_get(opts
, "listen");
2889 if (net_socket_listen_init(vlan
, "socket", name
, listen
) == -1) {
2892 } else if (qemu_opt_get(opts
, "connect")) {
2893 const char *connect
;
2895 if (qemu_opt_get(opts
, "fd") ||
2896 qemu_opt_get(opts
, "listen") ||
2897 qemu_opt_get(opts
, "mcast")) {
2898 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2902 connect
= qemu_opt_get(opts
, "connect");
2904 if (net_socket_connect_init(vlan
, "socket", name
, connect
) == -1) {
2907 } else if (qemu_opt_get(opts
, "mcast")) {
2910 if (qemu_opt_get(opts
, "fd") ||
2911 qemu_opt_get(opts
, "connect") ||
2912 qemu_opt_get(opts
, "listen")) {
2913 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
2917 mcast
= qemu_opt_get(opts
, "mcast");
2919 if (net_socket_mcast_init(vlan
, "socket", name
, mcast
) == -1) {
2923 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
2928 vlan
->nb_host_devs
++;
2935 static int net_init_vde(QemuOpts
*opts
,
2944 sock
= qemu_opt_get(opts
, "sock");
2945 group
= qemu_opt_get(opts
, "group");
2947 port
= qemu_opt_get_number(opts
, "port", 0);
2948 mode
= qemu_opt_get_number(opts
, "mode", 0700);
2950 if (net_vde_init(vlan
, "vde", name
, sock
, port
, group
, mode
) == -1) {
2955 vlan
->nb_host_devs
++;
2962 static int net_init_dump(QemuOpts
*opts
,
2973 file
= qemu_opt_get(opts
, "file");
2975 snprintf(def_file
, sizeof(def_file
), "qemu-vlan%d.pcap", vlan
->id
);
2979 len
= qemu_opt_get_size(opts
, "len", 65536);
2981 return net_dump_init(vlan
, "dump", name
, file
, len
);
2984 #define NET_COMMON_PARAMS_DESC \
2987 .type = QEMU_OPT_STRING, \
2988 .help = "net client type (nic, tap etc.)", \
2991 .type = QEMU_OPT_NUMBER, \
2992 .help = "vlan number", \
2995 .type = QEMU_OPT_STRING, \
2996 .help = "identifier for monitor commands", \
2999 typedef int (*net_client_init_func
)(QemuOpts
*opts
,
3004 /* magic number, but compiler will warn if too small */
3005 #define NET_MAX_DESC 20
3009 net_client_init_func init
;
3010 QemuOptDesc desc
[NET_MAX_DESC
];
3011 } net_client_types
[] = {
3015 NET_COMMON_PARAMS_DESC
,
3016 { /* end of list */ }
3020 .init
= net_init_nic
,
3022 NET_COMMON_PARAMS_DESC
,
3025 .type
= QEMU_OPT_STRING
,
3026 .help
= "id of -netdev to connect to",
3030 .type
= QEMU_OPT_STRING
,
3031 .help
= "MAC address",
3034 .type
= QEMU_OPT_STRING
,
3035 .help
= "device model (e1000, rtl8139, virtio etc.)",
3038 .type
= QEMU_OPT_STRING
,
3039 .help
= "PCI device address",
3042 .type
= QEMU_OPT_NUMBER
,
3043 .help
= "number of MSI-x vectors, 0 to disable MSI-X",
3045 { /* end of list */ }
3050 .init
= net_init_slirp
,
3052 NET_COMMON_PARAMS_DESC
,
3055 .type
= QEMU_OPT_STRING
,
3056 .help
= "client hostname reported by the builtin DHCP server",
3059 .type
= QEMU_OPT_STRING
,
3060 .help
= "isolate the guest from the host (y|yes|n|no)",
3063 .type
= QEMU_OPT_STRING
,
3064 .help
= "legacy parameter, use net= instead",
3067 .type
= QEMU_OPT_STRING
,
3068 .help
= "IP address and optional netmask",
3071 .type
= QEMU_OPT_STRING
,
3072 .help
= "guest-visible address of the host",
3075 .type
= QEMU_OPT_STRING
,
3076 .help
= "root directory of the built-in TFTP server",
3079 .type
= QEMU_OPT_STRING
,
3080 .help
= "BOOTP filename, for use with tftp=",
3082 .name
= "dhcpstart",
3083 .type
= QEMU_OPT_STRING
,
3084 .help
= "the first of the 16 IPs the built-in DHCP server can assign",
3087 .type
= QEMU_OPT_STRING
,
3088 .help
= "guest-visible address of the virtual nameserver",
3091 .type
= QEMU_OPT_STRING
,
3092 .help
= "root directory of the built-in SMB server",
3094 .name
= "smbserver",
3095 .type
= QEMU_OPT_STRING
,
3096 .help
= "IP address of the built-in SMB server",
3099 .type
= QEMU_OPT_STRING
,
3100 .help
= "guest port number to forward incoming TCP or UDP connections",
3103 .type
= QEMU_OPT_STRING
,
3104 .help
= "IP address and port to forward guest TCP connections",
3106 { /* end of list */ }
3112 .init
= net_init_tap_win32
,
3114 NET_COMMON_PARAMS_DESC
,
3117 .type
= QEMU_OPT_STRING
,
3118 .help
= "interface name",
3120 { /* end of list */ }
3122 #elif !defined(_AIX)
3125 .init
= net_init_tap
,
3127 NET_COMMON_PARAMS_DESC
,
3130 .type
= QEMU_OPT_STRING
,
3131 .help
= "file descriptor of an already opened tap",
3134 .type
= QEMU_OPT_STRING
,
3135 .help
= "interface name",
3138 .type
= QEMU_OPT_STRING
,
3139 .help
= "script to initialize the interface",
3141 .name
= "downscript",
3142 .type
= QEMU_OPT_STRING
,
3143 .help
= "script to shut down the interface",
3146 .type
= QEMU_OPT_SIZE
,
3147 .help
= "send buffer limit"
3150 .type
= QEMU_OPT_BOOL
,
3151 .help
= "enable the IFF_VNET_HDR flag on the tap interface"
3153 { /* end of list */ }
3158 .init
= net_init_socket
,
3160 NET_COMMON_PARAMS_DESC
,
3163 .type
= QEMU_OPT_STRING
,
3164 .help
= "file descriptor of an already opened socket",
3167 .type
= QEMU_OPT_STRING
,
3168 .help
= "port number, and optional hostname, to listen on",
3171 .type
= QEMU_OPT_STRING
,
3172 .help
= "port number, and optional hostname, to connect to",
3175 .type
= QEMU_OPT_STRING
,
3176 .help
= "UDP multicast address and port number",
3178 { /* end of list */ }
3183 .init
= net_init_vde
,
3185 NET_COMMON_PARAMS_DESC
,
3188 .type
= QEMU_OPT_STRING
,
3189 .help
= "socket path",
3192 .type
= QEMU_OPT_NUMBER
,
3193 .help
= "port number",
3196 .type
= QEMU_OPT_STRING
,
3197 .help
= "group owner of socket",
3200 .type
= QEMU_OPT_NUMBER
,
3201 .help
= "permissions for socket",
3203 { /* end of list */ }
3208 .init
= net_init_dump
,
3210 NET_COMMON_PARAMS_DESC
,
3213 .type
= QEMU_OPT_SIZE
,
3214 .help
= "per-packet size limit (64k default)",
3217 .type
= QEMU_OPT_STRING
,
3218 .help
= "dump file path (default is qemu-vlan0.pcap)",
3220 { /* end of list */ }
3223 { /* end of list */ }
3226 int net_client_init(Monitor
*mon
, QemuOpts
*opts
, int is_netdev
)
3232 type
= qemu_opt_get(opts
, "type");
3234 qemu_error("No type specified for -net\n");
3239 if (strcmp(type
, "tap") != 0 &&
3241 strcmp(type
, "user") != 0 &&
3244 strcmp(type
, "vde") != 0 &&
3246 strcmp(type
, "socket") != 0) {
3247 qemu_error("The '%s' network backend type is not valid with -netdev\n",
3252 if (qemu_opt_get(opts
, "vlan")) {
3253 qemu_error("The 'vlan' parameter is not valid with -netdev\n");
3256 if (qemu_opt_get(opts
, "name")) {
3257 qemu_error("The 'name' parameter is not valid with -netdev\n");
3260 if (!qemu_opts_id(opts
)) {
3261 qemu_error("The id= parameter is required with -netdev\n");
3266 name
= qemu_opts_id(opts
);
3268 name
= qemu_opt_get(opts
, "name");
3271 for (i
= 0; net_client_types
[i
].type
!= NULL
; i
++) {
3272 if (!strcmp(net_client_types
[i
].type
, type
)) {
3273 VLANState
*vlan
= NULL
;
3275 if (qemu_opts_validate(opts
, &net_client_types
[i
].desc
[0]) == -1) {
3279 /* Do not add to a vlan if it's a -netdev or a nic with a
3280 * netdev= parameter. */
3282 (strcmp(type
, "nic") == 0 && qemu_opt_get(opts
, "netdev")))) {
3283 vlan
= qemu_find_vlan(qemu_opt_get_number(opts
, "vlan", 0), 1);
3286 if (net_client_types
[i
].init
) {
3287 return net_client_types
[i
].init(opts
, mon
, name
, vlan
);
3294 qemu_error("Invalid -net type '%s'\n", type
);
3298 void net_client_uninit(NICInfo
*nd
)
3301 nd
->vlan
->nb_guest_devs
--;
3305 qemu_free(nd
->model
);
3306 qemu_free(nd
->name
);
3307 qemu_free(nd
->devaddr
);
3312 static int net_host_check_device(const char *device
)
3315 const char *valid_param_list
[] = { "tap", "socket", "dump"
3323 for (i
= 0; i
< sizeof(valid_param_list
) / sizeof(char *); i
++) {
3324 if (!strncmp(valid_param_list
[i
], device
,
3325 strlen(valid_param_list
[i
])))
3332 void net_host_device_add(Monitor
*mon
, const QDict
*qdict
)
3334 const char *device
= qdict_get_str(qdict
, "device");
3335 const char *opts_str
= qdict_get_try_str(qdict
, "opts");
3338 if (!net_host_check_device(device
)) {
3339 monitor_printf(mon
, "invalid host network device %s\n", device
);
3343 opts
= qemu_opts_parse(&qemu_net_opts
, opts_str
? opts_str
: "", NULL
);
3345 monitor_printf(mon
, "parsing network options '%s' failed\n",
3346 opts_str
? opts_str
: "");
3350 qemu_opt_set(opts
, "type", device
);
3352 if (net_client_init(mon
, opts
, 0) < 0) {
3353 monitor_printf(mon
, "adding host network device %s failed\n", device
);
3357 void net_host_device_remove(Monitor
*mon
, const QDict
*qdict
)
3359 VLANClientState
*vc
;
3360 int vlan_id
= qdict_get_int(qdict
, "vlan_id");
3361 const char *device
= qdict_get_str(qdict
, "device");
3363 vc
= qemu_find_vlan_client_by_name(mon
, vlan_id
, device
);
3367 if (!net_host_check_device(vc
->model
)) {
3368 monitor_printf(mon
, "invalid host network device %s\n", device
);
3371 qemu_del_vlan_client(vc
);
3374 void net_set_boot_mask(int net_boot_mask
)
3378 /* Only the first four NICs may be bootable */
3379 net_boot_mask
= net_boot_mask
& 0xF;
3381 for (i
= 0; i
< nb_nics
; i
++) {
3382 if (net_boot_mask
& (1 << i
)) {
3383 nd_table
[i
].bootable
= 1;
3384 net_boot_mask
&= ~(1 << i
);
3388 if (net_boot_mask
) {
3389 fprintf(stderr
, "Cannot boot from non-existent NIC\n");
3394 void do_info_network(Monitor
*mon
)
3398 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3399 VLANClientState
*vc
;
3401 monitor_printf(mon
, "VLAN %d devices:\n", vlan
->id
);
3403 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
3404 monitor_printf(mon
, " %s: %s\n", vc
->name
, vc
->info_str
);
3409 void do_set_link(Monitor
*mon
, const QDict
*qdict
)
3412 VLANClientState
*vc
= NULL
;
3413 const char *name
= qdict_get_str(qdict
, "name");
3414 const char *up_or_down
= qdict_get_str(qdict
, "up_or_down");
3416 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3417 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
3418 if (strcmp(vc
->name
, name
) == 0) {
3426 monitor_printf(mon
, "could not find network device '%s'\n", name
);
3430 if (strcmp(up_or_down
, "up") == 0)
3432 else if (strcmp(up_or_down
, "down") == 0)
3435 monitor_printf(mon
, "invalid link status '%s'; only 'up' or 'down' "
3436 "valid\n", up_or_down
);
3438 if (vc
->link_status_changed
)
3439 vc
->link_status_changed(vc
);
3442 void net_cleanup(void)
3445 VLANClientState
*vc
, *next_vc
;
3447 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3448 QTAILQ_FOREACH_SAFE(vc
, &vlan
->clients
, next
, next_vc
) {
3449 qemu_del_vlan_client(vc
);
3453 QTAILQ_FOREACH_SAFE(vc
, &non_vlan_clients
, next
, next_vc
) {
3454 qemu_del_vlan_client(vc
);
3458 static void net_check_clients(void)
3462 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3463 if (vlan
->nb_guest_devs
== 0 && vlan
->nb_host_devs
== 0)
3465 if (vlan
->nb_guest_devs
== 0)
3466 fprintf(stderr
, "Warning: vlan %d with no nics\n", vlan
->id
);
3467 if (vlan
->nb_host_devs
== 0)
3469 "Warning: vlan %d is not connected to host network\n",
3474 static int net_init_client(QemuOpts
*opts
, void *dummy
)
3476 if (net_client_init(NULL
, opts
, 0) < 0)
3481 static int net_init_netdev(QemuOpts
*opts
, void *dummy
)
3483 return net_client_init(NULL
, opts
, 1);
3486 int net_init_clients(void)
3488 if (QTAILQ_EMPTY(&qemu_net_opts
.head
)) {
3489 /* if no clients, we use a default config */
3490 qemu_opts_set(&qemu_net_opts
, NULL
, "type", "nic");
3492 qemu_opts_set(&qemu_net_opts
, NULL
, "type", "user");
3496 QTAILQ_INIT(&vlans
);
3497 QTAILQ_INIT(&non_vlan_clients
);
3499 if (qemu_opts_foreach(&qemu_netdev_opts
, net_init_netdev
, NULL
, 1) == -1)
3502 if (qemu_opts_foreach(&qemu_net_opts
, net_init_client
, NULL
, 1) == -1) {
3506 net_check_clients();
3511 int net_client_parse(QemuOptsList
*opts_list
, const char *optarg
)
3513 #if defined(CONFIG_SLIRP)
3514 /* handle legacy -net channel,port:chr */
3515 if (!strcmp(opts_list
->name
, "net") &&
3516 !strncmp(optarg
, "channel,", strlen("channel,"))) {
3519 optarg
+= strlen("channel,");
3521 if (QTAILQ_EMPTY(&slirp_stacks
)) {
3522 struct slirp_config_str
*config
;
3524 config
= qemu_malloc(sizeof(*config
));
3525 pstrcpy(config
->str
, sizeof(config
->str
), optarg
);
3526 config
->flags
= SLIRP_CFG_LEGACY
;
3527 config
->next
= slirp_configs
;
3528 slirp_configs
= config
;
3531 ret
= slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks
), optarg
, 1);
3537 if (!qemu_opts_parse(opts_list
, optarg
, "type")) {