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 // FIXME: #include "qemu-kvm.h"
105 #include "qemu-common.h"
109 #include "qemu-timer.h"
110 #include "qemu-char.h"
111 #include "audio/audio.h"
112 #include "qemu_socket.h"
113 #include "qemu-log.h"
114 #include "qemu-config.h"
116 #include "slirp/libslirp.h"
118 static QTAILQ_HEAD(, VLANState
) vlans
;
119 static QTAILQ_HEAD(, VLANClientState
) non_vlan_clients
;
121 /***********************************************************/
122 /* network device redirectors */
124 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
125 static void hex_dump(FILE *f
, const uint8_t *buf
, int size
)
129 for(i
=0;i
<size
;i
+=16) {
133 fprintf(f
, "%08x ", i
);
136 fprintf(f
, " %02x", buf
[i
+j
]);
143 if (c
< ' ' || c
> '~')
152 static int parse_macaddr(uint8_t *macaddr
, const char *p
)
159 offset
= strtol(p
, &last_char
, 0);
160 if (0 == errno
&& '\0' == *last_char
&&
161 offset
>= 0 && offset
<= 0xFFFFFF) {
162 macaddr
[3] = (offset
& 0xFF0000) >> 16;
163 macaddr
[4] = (offset
& 0xFF00) >> 8;
164 macaddr
[5] = offset
& 0xFF;
167 for(i
= 0; i
< 6; i
++) {
168 macaddr
[i
] = strtol(p
, (char **)&p
, 16);
173 if (*p
!= ':' && *p
!= '-')
184 static int get_str_sep(char *buf
, int buf_size
, const char **pp
, int sep
)
195 if (len
> buf_size
- 1)
204 int parse_host_src_port(struct sockaddr_in
*haddr
,
205 struct sockaddr_in
*saddr
,
206 const char *input_str
)
208 char *str
= strdup(input_str
);
209 char *host_str
= str
;
211 const char *src_str2
;
215 * Chop off any extra arguments at the end of the string which
216 * would start with a comma, then fill in the src port information
217 * if it was provided else use the "any address" and "any port".
219 if ((ptr
= strchr(str
,',')))
222 if ((src_str
= strchr(input_str
,'@'))) {
227 if (parse_host_port(haddr
, host_str
) < 0)
231 if (!src_str
|| *src_str
== '\0')
234 if (parse_host_port(saddr
, src_str2
) < 0)
245 int parse_host_port(struct sockaddr_in
*saddr
, const char *str
)
253 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
255 saddr
->sin_family
= AF_INET
;
256 if (buf
[0] == '\0') {
257 saddr
->sin_addr
.s_addr
= 0;
259 if (qemu_isdigit(buf
[0])) {
260 if (!inet_aton(buf
, &saddr
->sin_addr
))
263 if ((he
= gethostbyname(buf
)) == NULL
)
265 saddr
->sin_addr
= *(struct in_addr
*)he
->h_addr
;
268 port
= strtol(p
, (char **)&r
, 0);
271 saddr
->sin_port
= htons(port
);
275 void qemu_format_nic_info_str(VLANClientState
*vc
, uint8_t macaddr
[6])
277 snprintf(vc
->info_str
, sizeof(vc
->info_str
),
278 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
280 macaddr
[0], macaddr
[1], macaddr
[2],
281 macaddr
[3], macaddr
[4], macaddr
[5]);
284 void qemu_macaddr_default_if_unset(MACAddr
*macaddr
)
286 static int index
= 0;
287 static const MACAddr zero
= { .a
= { 0,0,0,0,0,0 } };
289 if (memcmp(macaddr
, &zero
, sizeof(zero
)) != 0)
291 macaddr
->a
[0] = 0x52;
292 macaddr
->a
[1] = 0x54;
293 macaddr
->a
[2] = 0x00;
294 macaddr
->a
[3] = 0x12;
295 macaddr
->a
[4] = 0x34;
296 macaddr
->a
[5] = 0x56 + index
++;
299 static char *assign_name(VLANClientState
*vc1
, const char *model
)
305 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
308 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
309 if (vc
!= vc1
&& strcmp(vc
->model
, model
) == 0) {
315 snprintf(buf
, sizeof(buf
), "%s.%d", model
, id
);
317 return qemu_strdup(buf
);
320 static ssize_t
qemu_deliver_packet(VLANClientState
*sender
,
325 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 NetReceiveIOV
*receive_iov
,
343 vc
= qemu_mallocz(sizeof(VLANClientState
));
346 vc
->model
= qemu_strdup(model
);
348 vc
->name
= qemu_strdup(name
);
350 vc
->name
= assign_name(vc
, model
);
351 vc
->can_receive
= can_receive
;
352 vc
->receive
= receive
;
353 vc
->receive_iov
= receive_iov
;
354 vc
->cleanup
= cleanup
;
360 QTAILQ_INSERT_TAIL(&vc
->vlan
->clients
, vc
, next
);
366 QTAILQ_INSERT_TAIL(&non_vlan_clients
, vc
, next
);
368 vc
->send_queue
= qemu_new_net_queue(qemu_deliver_packet
,
369 qemu_deliver_packet_iov
,
376 void qemu_del_vlan_client(VLANClientState
*vc
)
379 QTAILQ_REMOVE(&vc
->vlan
->clients
, vc
, next
);
381 if (vc
->send_queue
) {
382 qemu_del_net_queue(vc
->send_queue
);
384 QTAILQ_REMOVE(&non_vlan_clients
, vc
, next
);
386 vc
->peer
->peer
= NULL
;
395 qemu_free(vc
->model
);
399 VLANClientState
*qemu_find_vlan_client(VLANState
*vlan
, void *opaque
)
403 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
404 if (vc
->opaque
== opaque
) {
412 static VLANClientState
*
413 qemu_find_vlan_client_by_name(Monitor
*mon
, int vlan_id
,
414 const char *client_str
)
419 vlan
= qemu_find_vlan(vlan_id
, 0);
421 monitor_printf(mon
, "unknown VLAN %d\n", vlan_id
);
425 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
426 if (!strcmp(vc
->name
, client_str
)) {
431 monitor_printf(mon
, "can't find device %s on VLAN %d\n",
432 client_str
, vlan_id
);
438 int qemu_can_send_packet(VLANClientState
*sender
)
440 VLANState
*vlan
= sender
->vlan
;
444 if (!sender
->peer
->can_receive
||
445 sender
->peer
->can_receive(sender
->peer
)) {
456 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
461 /* no can_receive() handler, they can always receive */
462 if (!vc
->can_receive
|| vc
->can_receive(vc
)) {
469 static ssize_t
qemu_deliver_packet(VLANClientState
*sender
,
475 VLANClientState
*vc
= opaque
;
481 if (raw
&& vc
->receive_raw
) {
482 return vc
->receive_raw(vc
, data
, size
);
484 return vc
->receive(vc
, data
, size
);
488 static ssize_t
qemu_vlan_deliver_packet(VLANClientState
*sender
,
494 VLANState
*vlan
= opaque
;
498 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
510 if (raw
&& vc
->receive_raw
) {
511 len
= vc
->receive_raw(vc
, buf
, size
);
513 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_async2(VLANClientState
*sender
,
553 const uint8_t *buf
, int size
, int raw
,
554 NetPacketSent
*sent_cb
)
559 printf("qemu_send_packet_async:\n");
560 hex_dump(stdout
, buf
, size
);
563 if (sender
->link_down
|| (!sender
->peer
&& !sender
->vlan
)) {
568 queue
= sender
->peer
->send_queue
;
570 queue
= sender
->vlan
->send_queue
;
573 return qemu_net_queue_send(queue
, sender
, buf
, size
, raw
, sent_cb
);
576 ssize_t
qemu_send_packet_async(VLANClientState
*sender
,
577 const uint8_t *buf
, int size
,
578 NetPacketSent
*sent_cb
)
580 return qemu_send_packet_async2(sender
, buf
, size
, 0, sent_cb
);
583 ssize_t
qemu_send_packet(VLANClientState
*sender
, const uint8_t *buf
, int size
)
585 return qemu_send_packet_async2(sender
, buf
, size
, 0, NULL
);
588 ssize_t
qemu_send_packet_raw(VLANClientState
*sender
, const uint8_t *buf
, int size
)
590 return qemu_send_packet_async2(sender
, buf
, size
, 1, NULL
);
593 static ssize_t
vc_sendv_compat(VLANClientState
*vc
, const struct iovec
*iov
,
596 uint8_t buffer
[4096];
600 for (i
= 0; i
< iovcnt
; i
++) {
603 len
= MIN(sizeof(buffer
) - offset
, iov
[i
].iov_len
);
604 memcpy(buffer
+ offset
, iov
[i
].iov_base
, len
);
608 return vc
->receive(vc
, buffer
, offset
);
611 static ssize_t
calc_iov_length(const struct iovec
*iov
, int iovcnt
)
616 for (i
= 0; i
< iovcnt
; i
++)
617 offset
+= iov
[i
].iov_len
;
621 static ssize_t
qemu_deliver_packet_iov(VLANClientState
*sender
,
622 const struct iovec
*iov
,
626 VLANClientState
*vc
= opaque
;
629 return calc_iov_length(iov
, iovcnt
);
632 if (vc
->receive_iov
) {
633 return vc
->receive_iov(vc
, iov
, iovcnt
);
635 return vc_sendv_compat(vc
, iov
, iovcnt
);
639 static ssize_t
qemu_vlan_deliver_packet_iov(VLANClientState
*sender
,
640 const struct iovec
*iov
,
644 VLANState
*vlan
= opaque
;
648 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
656 ret
= calc_iov_length(iov
, iovcnt
);
660 if (vc
->receive_iov
) {
661 len
= vc
->receive_iov(vc
, iov
, iovcnt
);
663 len
= vc_sendv_compat(vc
, iov
, iovcnt
);
666 ret
= (ret
>= 0) ? ret
: len
;
672 ssize_t
qemu_sendv_packet_async(VLANClientState
*sender
,
673 const struct iovec
*iov
, int iovcnt
,
674 NetPacketSent
*sent_cb
)
678 if (sender
->link_down
|| (!sender
->peer
&& !sender
->vlan
)) {
679 return calc_iov_length(iov
, iovcnt
);
683 queue
= sender
->peer
->send_queue
;
685 queue
= sender
->vlan
->send_queue
;
688 return qemu_net_queue_send_iov(queue
, sender
, iov
, iovcnt
, sent_cb
);
692 qemu_sendv_packet(VLANClientState
*vc
, const struct iovec
*iov
, int iovcnt
)
694 return qemu_sendv_packet_async(vc
, iov
, iovcnt
, NULL
);
697 #if defined(CONFIG_SLIRP)
699 /* slirp network adapter */
701 #define SLIRP_CFG_HOSTFWD 1
702 #define SLIRP_CFG_LEGACY 2
704 struct slirp_config_str
{
705 struct slirp_config_str
*next
;
711 typedef struct SlirpState
{
712 QTAILQ_ENTRY(SlirpState
) entry
;
720 static struct slirp_config_str
*slirp_configs
;
721 const char *legacy_tftp_prefix
;
722 const char *legacy_bootp_filename
;
723 static QTAILQ_HEAD(slirp_stacks
, SlirpState
) slirp_stacks
=
724 QTAILQ_HEAD_INITIALIZER(slirp_stacks
);
726 static int slirp_hostfwd(SlirpState
*s
, const char *redir_str
,
728 static int slirp_guestfwd(SlirpState
*s
, const char *config_str
,
732 static const char *legacy_smb_export
;
734 static int slirp_smb(SlirpState
*s
, const char *exported_dir
,
735 struct in_addr vserver_addr
);
736 static void slirp_smb_cleanup(SlirpState
*s
);
738 static inline void slirp_smb_cleanup(SlirpState
*s
) { }
741 int slirp_can_output(void *opaque
)
743 SlirpState
*s
= opaque
;
745 return qemu_can_send_packet(s
->vc
);
748 void slirp_output(void *opaque
, const uint8_t *pkt
, int pkt_len
)
750 SlirpState
*s
= opaque
;
753 printf("slirp output:\n");
754 hex_dump(stdout
, pkt
, pkt_len
);
756 qemu_send_packet(s
->vc
, pkt
, pkt_len
);
759 static ssize_t
slirp_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
761 SlirpState
*s
= vc
->opaque
;
764 printf("slirp input:\n");
765 hex_dump(stdout
, buf
, size
);
767 slirp_input(s
->slirp
, buf
, size
);
771 static void net_slirp_cleanup(VLANClientState
*vc
)
773 SlirpState
*s
= vc
->opaque
;
775 slirp_cleanup(s
->slirp
);
776 slirp_smb_cleanup(s
);
777 QTAILQ_REMOVE(&slirp_stacks
, s
, entry
);
781 static int net_slirp_init(VLANState
*vlan
, const char *model
,
782 const char *name
, int restricted
,
783 const char *vnetwork
, const char *vhost
,
784 const char *vhostname
, const char *tftp_export
,
785 const char *bootfile
, const char *vdhcp_start
,
786 const char *vnameserver
, const char *smb_export
,
787 const char *vsmbserver
)
789 /* default settings according to historic slirp */
790 struct in_addr net
= { .s_addr
= htonl(0x0a000200) }; /* 10.0.2.0 */
791 struct in_addr mask
= { .s_addr
= htonl(0xffffff00) }; /* 255.255.255.0 */
792 struct in_addr host
= { .s_addr
= htonl(0x0a000202) }; /* 10.0.2.2 */
793 struct in_addr dhcp
= { .s_addr
= htonl(0x0a00020f) }; /* 10.0.2.15 */
794 struct in_addr dns
= { .s_addr
= htonl(0x0a000203) }; /* 10.0.2.3 */
796 struct in_addr smbsrv
= { .s_addr
= 0 };
803 struct slirp_config_str
*config
;
806 tftp_export
= legacy_tftp_prefix
;
809 bootfile
= legacy_bootp_filename
;
813 if (get_str_sep(buf
, sizeof(buf
), &vnetwork
, '/') < 0) {
814 if (!inet_aton(vnetwork
, &net
)) {
817 addr
= ntohl(net
.s_addr
);
818 if (!(addr
& 0x80000000)) {
819 mask
.s_addr
= htonl(0xff000000); /* class A */
820 } else if ((addr
& 0xfff00000) == 0xac100000) {
821 mask
.s_addr
= htonl(0xfff00000); /* priv. 172.16.0.0/12 */
822 } else if ((addr
& 0xc0000000) == 0x80000000) {
823 mask
.s_addr
= htonl(0xffff0000); /* class B */
824 } else if ((addr
& 0xffff0000) == 0xc0a80000) {
825 mask
.s_addr
= htonl(0xffff0000); /* priv. 192.168.0.0/16 */
826 } else if ((addr
& 0xffff0000) == 0xc6120000) {
827 mask
.s_addr
= htonl(0xfffe0000); /* tests 198.18.0.0/15 */
828 } else if ((addr
& 0xe0000000) == 0xe0000000) {
829 mask
.s_addr
= htonl(0xffffff00); /* class C */
831 mask
.s_addr
= htonl(0xfffffff0); /* multicast/reserved */
834 if (!inet_aton(buf
, &net
)) {
837 shift
= strtol(vnetwork
, &end
, 10);
839 if (!inet_aton(vnetwork
, &mask
)) {
842 } else if (shift
< 4 || shift
> 32) {
845 mask
.s_addr
= htonl(0xffffffff << (32 - shift
));
848 net
.s_addr
&= mask
.s_addr
;
849 host
.s_addr
= net
.s_addr
| (htonl(0x0202) & ~mask
.s_addr
);
850 dhcp
.s_addr
= net
.s_addr
| (htonl(0x020f) & ~mask
.s_addr
);
851 dns
.s_addr
= net
.s_addr
| (htonl(0x0203) & ~mask
.s_addr
);
854 if (vhost
&& !inet_aton(vhost
, &host
)) {
857 if ((host
.s_addr
& mask
.s_addr
) != net
.s_addr
) {
861 if (vdhcp_start
&& !inet_aton(vdhcp_start
, &dhcp
)) {
864 if ((dhcp
.s_addr
& mask
.s_addr
) != net
.s_addr
||
865 dhcp
.s_addr
== host
.s_addr
|| dhcp
.s_addr
== dns
.s_addr
) {
869 if (vnameserver
&& !inet_aton(vnameserver
, &dns
)) {
872 if ((dns
.s_addr
& mask
.s_addr
) != net
.s_addr
||
873 dns
.s_addr
== host
.s_addr
) {
878 if (vsmbserver
&& !inet_aton(vsmbserver
, &smbsrv
)) {
883 s
= qemu_mallocz(sizeof(SlirpState
));
884 s
->slirp
= slirp_init(restricted
, net
, mask
, host
, vhostname
,
885 tftp_export
, bootfile
, dhcp
, dns
, s
);
886 QTAILQ_INSERT_TAIL(&slirp_stacks
, s
, entry
);
888 for (config
= slirp_configs
; config
; config
= config
->next
) {
889 if (config
->flags
& SLIRP_CFG_HOSTFWD
) {
890 if (slirp_hostfwd(s
, config
->str
,
891 config
->flags
& SLIRP_CFG_LEGACY
) < 0)
894 if (slirp_guestfwd(s
, config
->str
,
895 config
->flags
& SLIRP_CFG_LEGACY
) < 0)
901 smb_export
= legacy_smb_export
;
904 if (slirp_smb(s
, smb_export
, smbsrv
) < 0)
909 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_SLIRP
,
910 vlan
, NULL
, model
, name
, NULL
,
912 net_slirp_cleanup
, s
);
913 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
914 "net=%s, restricted=%c", inet_ntoa(net
), restricted
? 'y' : 'n');
918 static SlirpState
*slirp_lookup(Monitor
*mon
, const char *vlan
,
924 vc
= qemu_find_vlan_client_by_name(mon
, strtol(vlan
, NULL
, 0), stack
);
928 if (strcmp(vc
->model
, "user")) {
929 monitor_printf(mon
, "invalid device specified\n");
934 if (QTAILQ_EMPTY(&slirp_stacks
)) {
935 monitor_printf(mon
, "user mode network stack not in use\n");
938 return QTAILQ_FIRST(&slirp_stacks
);
942 void net_slirp_hostfwd_remove(Monitor
*mon
, const QDict
*qdict
)
944 struct in_addr host_addr
= { .s_addr
= INADDR_ANY
};
947 const char *src_str
, *p
;
951 const char *arg1
= qdict_get_str(qdict
, "arg1");
952 const char *arg2
= qdict_get_try_str(qdict
, "arg2");
953 const char *arg3
= qdict_get_try_str(qdict
, "arg3");
956 s
= slirp_lookup(mon
, arg1
, arg2
);
959 s
= slirp_lookup(mon
, NULL
, NULL
);
966 if (!src_str
|| !src_str
[0])
970 get_str_sep(buf
, sizeof(buf
), &p
, ':');
972 if (!strcmp(buf
, "tcp") || buf
[0] == '\0') {
974 } else if (!strcmp(buf
, "udp")) {
980 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
983 if (buf
[0] != '\0' && !inet_aton(buf
, &host_addr
)) {
989 err
= slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks
)->slirp
, is_udp
,
990 host_addr
, host_port
);
992 monitor_printf(mon
, "host forwarding rule for %s %s\n", src_str
,
993 err
? "removed" : "not found");
997 monitor_printf(mon
, "invalid format\n");
1000 static int slirp_hostfwd(SlirpState
*s
, const char *redir_str
,
1003 struct in_addr host_addr
= { .s_addr
= INADDR_ANY
};
1004 struct in_addr guest_addr
= { .s_addr
= 0 };
1005 int host_port
, guest_port
;
1012 if (!p
|| get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1015 if (!strcmp(buf
, "tcp") || buf
[0] == '\0') {
1017 } else if (!strcmp(buf
, "udp")) {
1023 if (!legacy_format
) {
1024 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1027 if (buf
[0] != '\0' && !inet_aton(buf
, &host_addr
)) {
1032 if (get_str_sep(buf
, sizeof(buf
), &p
, legacy_format
? ':' : '-') < 0) {
1035 host_port
= strtol(buf
, &end
, 0);
1036 if (*end
!= '\0' || host_port
< 1 || host_port
> 65535) {
1040 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1043 if (buf
[0] != '\0' && !inet_aton(buf
, &guest_addr
)) {
1047 guest_port
= strtol(p
, &end
, 0);
1048 if (*end
!= '\0' || guest_port
< 1 || guest_port
> 65535) {
1052 if (slirp_add_hostfwd(s
->slirp
, is_udp
, host_addr
, host_port
, guest_addr
,
1054 qemu_error("could not set up host forwarding rule '%s'\n",
1061 qemu_error("invalid host forwarding rule '%s'\n", redir_str
);
1065 void net_slirp_hostfwd_add(Monitor
*mon
, const QDict
*qdict
)
1067 const char *redir_str
;
1069 const char *arg1
= qdict_get_str(qdict
, "arg1");
1070 const char *arg2
= qdict_get_try_str(qdict
, "arg2");
1071 const char *arg3
= qdict_get_try_str(qdict
, "arg3");
1074 s
= slirp_lookup(mon
, arg1
, arg2
);
1077 s
= slirp_lookup(mon
, NULL
, NULL
);
1081 slirp_hostfwd(s
, redir_str
, 0);
1086 int net_slirp_redir(const char *redir_str
)
1088 struct slirp_config_str
*config
;
1090 if (QTAILQ_EMPTY(&slirp_stacks
)) {
1091 config
= qemu_malloc(sizeof(*config
));
1092 pstrcpy(config
->str
, sizeof(config
->str
), redir_str
);
1093 config
->flags
= SLIRP_CFG_HOSTFWD
| SLIRP_CFG_LEGACY
;
1094 config
->next
= slirp_configs
;
1095 slirp_configs
= config
;
1099 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks
), redir_str
, 1);
1104 /* automatic user mode samba server configuration */
1105 static void slirp_smb_cleanup(SlirpState
*s
)
1109 if (s
->smb_dir
[0] != '\0') {
1110 snprintf(cmd
, sizeof(cmd
), "rm -rf %s", s
->smb_dir
);
1112 s
->smb_dir
[0] = '\0';
1116 static int slirp_smb(SlirpState
* s
, const char *exported_dir
,
1117 struct in_addr vserver_addr
)
1119 static int instance
;
1121 char smb_cmdline
[128];
1124 snprintf(s
->smb_dir
, sizeof(s
->smb_dir
), "/tmp/qemu-smb.%ld-%d",
1125 (long)getpid(), instance
++);
1126 if (mkdir(s
->smb_dir
, 0700) < 0) {
1127 qemu_error("could not create samba server dir '%s'\n", s
->smb_dir
);
1130 snprintf(smb_conf
, sizeof(smb_conf
), "%s/%s", s
->smb_dir
, "smb.conf");
1132 f
= fopen(smb_conf
, "w");
1134 slirp_smb_cleanup(s
);
1135 qemu_error("could not create samba server configuration file '%s'\n",
1143 "socket address=127.0.0.1\n"
1144 "pid directory=%s\n"
1145 "lock directory=%s\n"
1146 "log file=%s/log.smbd\n"
1147 "smb passwd file=%s/smbpasswd\n"
1148 "security = share\n"
1162 snprintf(smb_cmdline
, sizeof(smb_cmdline
), "%s -s %s",
1163 SMBD_COMMAND
, smb_conf
);
1165 if (slirp_add_exec(s
->slirp
, 0, smb_cmdline
, &vserver_addr
, 139) < 0) {
1166 slirp_smb_cleanup(s
);
1167 qemu_error("conflicting/invalid smbserver address\n");
1173 /* automatic user mode samba server configuration (legacy interface) */
1174 int net_slirp_smb(const char *exported_dir
)
1176 struct in_addr vserver_addr
= { .s_addr
= 0 };
1178 if (legacy_smb_export
) {
1179 fprintf(stderr
, "-smb given twice\n");
1182 legacy_smb_export
= exported_dir
;
1183 if (!QTAILQ_EMPTY(&slirp_stacks
)) {
1184 return slirp_smb(QTAILQ_FIRST(&slirp_stacks
), exported_dir
,
1190 #endif /* !defined(_WIN32) */
1193 CharDriverState
*hd
;
1194 struct in_addr server
;
1199 static int guestfwd_can_read(void *opaque
)
1201 struct GuestFwd
*fwd
= opaque
;
1202 return slirp_socket_can_recv(fwd
->slirp
, fwd
->server
, fwd
->port
);
1205 static void guestfwd_read(void *opaque
, const uint8_t *buf
, int size
)
1207 struct GuestFwd
*fwd
= opaque
;
1208 slirp_socket_recv(fwd
->slirp
, fwd
->server
, fwd
->port
, buf
, size
);
1211 static int slirp_guestfwd(SlirpState
*s
, const char *config_str
,
1214 struct in_addr server
= { .s_addr
= 0 };
1215 struct GuestFwd
*fwd
;
1222 if (legacy_format
) {
1223 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1227 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1230 if (strcmp(buf
, "tcp") && buf
[0] != '\0') {
1233 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1236 if (buf
[0] != '\0' && !inet_aton(buf
, &server
)) {
1239 if (get_str_sep(buf
, sizeof(buf
), &p
, '-') < 0) {
1243 port
= strtol(buf
, &end
, 10);
1244 if (*end
!= '\0' || port
< 1 || port
> 65535) {
1248 fwd
= qemu_malloc(sizeof(struct GuestFwd
));
1249 snprintf(buf
, sizeof(buf
), "guestfwd.tcp:%d", port
);
1250 fwd
->hd
= qemu_chr_open(buf
, p
, NULL
);
1252 qemu_error("could not open guest forwarding device '%s'\n", buf
);
1257 if (slirp_add_exec(s
->slirp
, 3, fwd
->hd
, &server
, port
) < 0) {
1258 qemu_error("conflicting/invalid host:port in guest forwarding "
1259 "rule '%s'\n", config_str
);
1263 fwd
->server
= server
;
1265 fwd
->slirp
= s
->slirp
;
1267 qemu_chr_add_handlers(fwd
->hd
, guestfwd_can_read
, guestfwd_read
,
1272 qemu_error("invalid guest forwarding rule '%s'\n", config_str
);
1276 void do_info_usernet(Monitor
*mon
)
1280 QTAILQ_FOREACH(s
, &slirp_stacks
, entry
) {
1281 monitor_printf(mon
, "VLAN %d (%s):\n", s
->vc
->vlan
->id
, s
->vc
->name
);
1282 slirp_connection_info(s
->slirp
, mon
);
1286 #endif /* CONFIG_SLIRP */
1290 int tap_has_vnet_hdr(void *opaque
)
1295 void tap_using_vnet_hdr(void *opaque
, int using_vnet_hdr
)
1299 int tap_has_ufo(void *opaque
)
1304 #else /* !defined(_WIN32) */
1306 /* Maximum GSO packet size (64k) plus plenty of room for
1307 * the ethernet and virtio_net headers
1309 #define TAP_BUFSIZE (4096 + 65536)
1311 /* Maximum GSO packet size (64k) plus plenty of room for
1312 * the ethernet and virtio_net headers
1314 #define TAP_BUFSIZE (4096 + 65536)
1316 typedef struct TAPState
{
1317 VLANClientState
*vc
;
1319 char down_script
[1024];
1320 char down_script_arg
[128];
1321 uint8_t buf
[TAP_BUFSIZE
];
1322 unsigned int read_poll
: 1;
1323 unsigned int write_poll
: 1;
1324 unsigned int has_vnet_hdr
: 1;
1325 unsigned int using_vnet_hdr
: 1;
1326 unsigned int has_ufo
: 1;
1329 static int launch_script(const char *setup_script
, const char *ifname
, int fd
);
1331 static int tap_can_send(void *opaque
);
1332 static void tap_send(void *opaque
);
1333 static void tap_writable(void *opaque
);
1335 static void tap_update_fd_handler(TAPState
*s
)
1337 qemu_set_fd_handler2(s
->fd
,
1338 s
->read_poll
? tap_can_send
: NULL
,
1339 s
->read_poll
? tap_send
: NULL
,
1340 s
->write_poll
? tap_writable
: NULL
,
1344 static void tap_read_poll(TAPState
*s
, int enable
)
1346 s
->read_poll
= !!enable
;
1347 tap_update_fd_handler(s
);
1350 static void tap_write_poll(TAPState
*s
, int enable
)
1352 s
->write_poll
= !!enable
;
1353 tap_update_fd_handler(s
);
1356 static void tap_writable(void *opaque
)
1358 TAPState
*s
= opaque
;
1360 tap_write_poll(s
, 0);
1362 qemu_flush_queued_packets(s
->vc
);
1365 static ssize_t
tap_write_packet(TAPState
*s
, const struct iovec
*iov
, int iovcnt
)
1370 len
= writev(s
->fd
, iov
, iovcnt
);
1371 } while (len
== -1 && errno
== EINTR
);
1373 if (len
== -1 && errno
== EAGAIN
) {
1374 tap_write_poll(s
, 1);
1381 static ssize_t
tap_receive_iov(VLANClientState
*vc
, const struct iovec
*iov
,
1384 TAPState
*s
= vc
->opaque
;
1385 const struct iovec
*iovp
= iov
;
1386 struct iovec iov_copy
[iovcnt
+ 1];
1387 struct virtio_net_hdr hdr
= { 0, };
1389 if (s
->has_vnet_hdr
) {
1390 iov_copy
[0].iov_base
= &hdr
;
1391 iov_copy
[0].iov_len
= sizeof(hdr
);
1392 memcpy(&iov_copy
[1], iov
, iovcnt
* sizeof(*iov
));
1397 return tap_write_packet(s
, iovp
, iovcnt
);
1400 static ssize_t
tap_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1402 TAPState
*s
= vc
->opaque
;
1403 struct iovec iov
[2];
1405 struct virtio_net_hdr hdr
= { 0, };
1407 if (s
->has_vnet_hdr
&& !s
->using_vnet_hdr
) {
1408 iov
[iovcnt
].iov_base
= &hdr
;
1409 iov
[iovcnt
].iov_len
= sizeof(hdr
);
1413 iov
[iovcnt
].iov_base
= (char *)buf
;
1414 iov
[iovcnt
].iov_len
= size
;
1417 return tap_write_packet(s
, iov
, iovcnt
);
1420 static ssize_t
tap_receive_raw(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1422 TAPState
*s
= vc
->opaque
;
1423 struct iovec iov
[2];
1427 struct virtio_net_hdr hdr
= { 0, };
1429 if (s
->has_vnet_hdr
) {
1430 iov
[iovcnt
].iov_base
= &hdr
;
1431 iov
[iovcnt
].iov_len
= sizeof(hdr
);
1436 iov
[iovcnt
].iov_base
= (char *)buf
;
1437 iov
[iovcnt
].iov_len
= size
;
1440 return tap_write_packet(s
, iov
, iovcnt
);
1443 static int tap_can_send(void *opaque
)
1445 TAPState
*s
= opaque
;
1447 return qemu_can_send_packet(s
->vc
);
1451 static ssize_t
tap_read_packet(int tapfd
, uint8_t *buf
, int maxlen
)
1456 sbuf
.maxlen
= maxlen
;
1457 sbuf
.buf
= (char *)buf
;
1459 return getmsg(tapfd
, NULL
, &sbuf
, &f
) >= 0 ? sbuf
.len
: -1;
1462 static ssize_t
tap_read_packet(int tapfd
, uint8_t *buf
, int maxlen
)
1464 return read(tapfd
, buf
, maxlen
);
1468 static void tap_send_completed(VLANClientState
*vc
, ssize_t len
)
1470 TAPState
*s
= vc
->opaque
;
1471 tap_read_poll(s
, 1);
1474 static void tap_send(void *opaque
)
1476 TAPState
*s
= opaque
;
1480 uint8_t *buf
= s
->buf
;
1482 size
= tap_read_packet(s
->fd
, s
->buf
, sizeof(s
->buf
));
1487 if (s
->has_vnet_hdr
) {
1488 buf
+= sizeof(struct virtio_net_hdr
);
1489 size
-= sizeof(struct virtio_net_hdr
);
1492 size
= qemu_send_packet_async(s
->vc
, buf
, size
, tap_send_completed
);
1494 tap_read_poll(s
, 0);
1499 /* sndbuf should be set to a value lower than the tx queue
1500 * capacity of any destination network interface.
1501 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1502 * a good default, given a 1500 byte MTU.
1504 #define TAP_DEFAULT_SNDBUF 1024*1024
1506 static int tap_set_sndbuf(TAPState
*s
, QemuOpts
*opts
)
1510 sndbuf
= qemu_opt_get_size(opts
, "sndbuf", TAP_DEFAULT_SNDBUF
);
1515 if (ioctl(s
->fd
, TUNSETSNDBUF
, &sndbuf
) == -1 && qemu_opt_get(opts
, "sndbuf")) {
1516 qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno
));
1522 static int tap_probe_vnet_hdr(int fd
)
1526 if (ioctl(fd
, TUNGETIFF
, &ifr
) != 0) {
1527 qemu_error("TUNGETIFF ioctl() failed: %s\n", strerror(errno
));
1531 return ifr
.ifr_flags
& IFF_VNET_HDR
;
1534 int tap_has_vnet_hdr(void *opaque
)
1536 VLANClientState
*vc
= opaque
;
1537 TAPState
*s
= vc
->opaque
;
1539 if (vc
->receive
!= tap_receive
)
1542 return s
? s
->has_vnet_hdr
: 0;
1545 void tap_using_vnet_hdr(void *opaque
, int using_vnet_hdr
)
1547 VLANClientState
*vc
= opaque
;
1548 TAPState
*s
= vc
->opaque
;
1550 if (vc
->receive
!= tap_receive
)
1553 if (!s
|| !s
->has_vnet_hdr
)
1556 s
->using_vnet_hdr
= using_vnet_hdr
!= 0;
1559 int tap_has_ufo(void *opaque
)
1561 VLANClientState
*vc
= opaque
;
1562 TAPState
*s
= vc
->opaque
;
1564 return s
? s
->has_ufo
: 0;
1567 #ifdef TUNSETOFFLOAD
1570 #define TUN_F_UFO 0x10
1573 static void tap_set_offload(VLANClientState
*vc
, int csum
, int tso4
, int tso6
,
1576 TAPState
*s
= vc
->opaque
;
1577 unsigned int offload
= 0;
1580 offload
|= TUN_F_CSUM
;
1582 offload
|= TUN_F_TSO4
;
1584 offload
|= TUN_F_TSO6
;
1585 if ((tso4
|| tso6
) && ecn
)
1586 offload
|= TUN_F_TSO_ECN
;
1588 offload
|= TUN_F_UFO
;
1591 if (ioctl(s
->fd
, TUNSETOFFLOAD
, offload
) != 0) {
1592 /* Try without UFO */
1593 offload
&= ~TUN_F_UFO
;
1594 if (ioctl(s
->fd
, TUNSETOFFLOAD
, offload
) != 0) {
1595 fprintf(stderr
, "TUNSETOFFLOAD ioctl() failed: %s\n",
1600 #endif /* TUNSETOFFLOAD */
1602 static void tap_cleanup(VLANClientState
*vc
)
1604 TAPState
*s
= vc
->opaque
;
1606 qemu_purge_queued_packets(vc
);
1608 if (s
->down_script
[0])
1609 launch_script(s
->down_script
, s
->down_script_arg
, s
->fd
);
1611 tap_read_poll(s
, 0);
1612 tap_write_poll(s
, 0);
1619 static TAPState
*net_tap_fd_init(VLANState
*vlan
,
1626 #ifdef TUNSETOFFLOAD
1627 unsigned int offload
;
1630 s
= qemu_mallocz(sizeof(TAPState
));
1632 s
->has_vnet_hdr
= vnet_hdr
!= 0;
1633 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_TAP
,
1634 vlan
, NULL
, model
, name
, NULL
,
1635 tap_receive
, tap_receive_iov
,
1637 s
->vc
->receive_raw
= tap_receive_raw
;
1638 #ifdef TUNSETOFFLOAD
1639 s
->vc
->set_offload
= tap_set_offload
;
1642 /* Check if tap supports UFO */
1643 offload
= TUN_F_CSUM
| TUN_F_UFO
;
1644 if (ioctl(s
->fd
, TUNSETOFFLOAD
, offload
) == 0)
1647 tap_set_offload(s
->vc
, 0, 0, 0, 0, 0);
1649 tap_read_poll(s
, 1);
1653 #if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
1654 static int tap_open(char *ifname
, int ifname_size
,
1655 int *vnet_hdr
, int vnet_hdr_required
)
1661 TFR(fd
= open("/dev/tap", O_RDWR
));
1663 fprintf(stderr
, "warning: could not open /dev/tap: no virtual network emulation\n");
1668 dev
= devname(s
.st_rdev
, S_IFCHR
);
1669 pstrcpy(ifname
, ifname_size
, dev
);
1671 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1674 #elif defined(__sun__)
1675 #define TUNNEWPPA (('T'<<16) | 0x0001)
1677 * Allocate TAP device, returns opened fd.
1678 * Stores dev name in the first arg(must be large enough).
1680 static int tap_alloc(char *dev
, size_t dev_size
)
1682 int tap_fd
, if_fd
, ppa
= -1;
1683 static int ip_fd
= 0;
1686 static int arp_fd
= 0;
1687 int ip_muxid
, arp_muxid
;
1688 struct strioctl strioc_if
, strioc_ppa
;
1689 int link_type
= I_PLINK
;;
1691 char actual_name
[32] = "";
1693 memset(&ifr
, 0x0, sizeof(ifr
));
1697 while( *ptr
&& !qemu_isdigit((int)*ptr
) ) ptr
++;
1701 /* Check if IP device was opened */
1705 TFR(ip_fd
= open("/dev/udp", O_RDWR
, 0));
1707 syslog(LOG_ERR
, "Can't open /dev/ip (actually /dev/udp)");
1711 TFR(tap_fd
= open("/dev/tap", O_RDWR
, 0));
1713 syslog(LOG_ERR
, "Can't open /dev/tap");
1717 /* Assign a new PPA and get its unit number. */
1718 strioc_ppa
.ic_cmd
= TUNNEWPPA
;
1719 strioc_ppa
.ic_timout
= 0;
1720 strioc_ppa
.ic_len
= sizeof(ppa
);
1721 strioc_ppa
.ic_dp
= (char *)&ppa
;
1722 if ((ppa
= ioctl (tap_fd
, I_STR
, &strioc_ppa
)) < 0)
1723 syslog (LOG_ERR
, "Can't assign new interface");
1725 TFR(if_fd
= open("/dev/tap", O_RDWR
, 0));
1727 syslog(LOG_ERR
, "Can't open /dev/tap (2)");
1730 if(ioctl(if_fd
, I_PUSH
, "ip") < 0){
1731 syslog(LOG_ERR
, "Can't push IP module");
1735 if (ioctl(if_fd
, SIOCGLIFFLAGS
, &ifr
) < 0)
1736 syslog(LOG_ERR
, "Can't get flags\n");
1738 snprintf (actual_name
, 32, "tap%d", ppa
);
1739 pstrcpy(ifr
.lifr_name
, sizeof(ifr
.lifr_name
), actual_name
);
1742 /* Assign ppa according to the unit number returned by tun device */
1744 if (ioctl (if_fd
, SIOCSLIFNAME
, &ifr
) < 0)
1745 syslog (LOG_ERR
, "Can't set PPA %d", ppa
);
1746 if (ioctl(if_fd
, SIOCGLIFFLAGS
, &ifr
) <0)
1747 syslog (LOG_ERR
, "Can't get flags\n");
1748 /* Push arp module to if_fd */
1749 if (ioctl (if_fd
, I_PUSH
, "arp") < 0)
1750 syslog (LOG_ERR
, "Can't push ARP module (2)");
1752 /* Push arp module to ip_fd */
1753 if (ioctl (ip_fd
, I_POP
, NULL
) < 0)
1754 syslog (LOG_ERR
, "I_POP failed\n");
1755 if (ioctl (ip_fd
, I_PUSH
, "arp") < 0)
1756 syslog (LOG_ERR
, "Can't push ARP module (3)\n");
1758 TFR(arp_fd
= open ("/dev/tap", O_RDWR
, 0));
1760 syslog (LOG_ERR
, "Can't open %s\n", "/dev/tap");
1762 /* Set ifname to arp */
1763 strioc_if
.ic_cmd
= SIOCSLIFNAME
;
1764 strioc_if
.ic_timout
= 0;
1765 strioc_if
.ic_len
= sizeof(ifr
);
1766 strioc_if
.ic_dp
= (char *)&ifr
;
1767 if (ioctl(arp_fd
, I_STR
, &strioc_if
) < 0){
1768 syslog (LOG_ERR
, "Can't set ifname to arp\n");
1771 if((ip_muxid
= ioctl(ip_fd
, I_LINK
, if_fd
)) < 0){
1772 syslog(LOG_ERR
, "Can't link TAP device to IP");
1776 if ((arp_muxid
= ioctl (ip_fd
, link_type
, arp_fd
)) < 0)
1777 syslog (LOG_ERR
, "Can't link TAP device to ARP");
1781 memset(&ifr
, 0x0, sizeof(ifr
));
1782 pstrcpy(ifr
.lifr_name
, sizeof(ifr
.lifr_name
), actual_name
);
1783 ifr
.lifr_ip_muxid
= ip_muxid
;
1784 ifr
.lifr_arp_muxid
= arp_muxid
;
1786 if (ioctl (ip_fd
, SIOCSLIFMUXID
, &ifr
) < 0)
1788 ioctl (ip_fd
, I_PUNLINK
, arp_muxid
);
1789 ioctl (ip_fd
, I_PUNLINK
, ip_muxid
);
1790 syslog (LOG_ERR
, "Can't set multiplexor id");
1793 snprintf(dev
, dev_size
, "tap%d", ppa
);
1797 static int tap_open(char *ifname
, int ifname_size
,
1798 int *vnet_hdr
, int vnet_hdr_required
)
1802 if( (fd
= tap_alloc(dev
, sizeof(dev
))) < 0 ){
1803 fprintf(stderr
, "Cannot allocate TAP device\n");
1806 pstrcpy(ifname
, ifname_size
, dev
);
1807 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1810 #elif defined (_AIX)
1811 static int tap_open(char *ifname
, int ifname_size
,
1812 int *vnet_hdr
, int vnet_hdr_required
)
1814 fprintf (stderr
, "no tap on AIX\n");
1818 static int tap_open(char *ifname
, int ifname_size
,
1819 int *vnet_hdr
, int vnet_hdr_required
)
1824 TFR(fd
= open("/dev/net/tun", O_RDWR
));
1826 fprintf(stderr
, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1829 memset(&ifr
, 0, sizeof(ifr
));
1830 ifr
.ifr_flags
= IFF_TAP
| IFF_NO_PI
;
1833 unsigned int features
;
1835 if (ioctl(fd
, TUNGETFEATURES
, &features
) == 0 &&
1836 features
& IFF_VNET_HDR
) {
1838 ifr
.ifr_flags
|= IFF_VNET_HDR
;
1841 if (vnet_hdr_required
&& !*vnet_hdr
) {
1842 qemu_error("vnet_hdr=1 requested, but no kernel "
1843 "support for IFF_VNET_HDR available");
1849 if (ifname
[0] != '\0')
1850 pstrcpy(ifr
.ifr_name
, IFNAMSIZ
, ifname
);
1852 pstrcpy(ifr
.ifr_name
, IFNAMSIZ
, "tap%d");
1853 ret
= ioctl(fd
, TUNSETIFF
, (void *) &ifr
);
1855 fprintf(stderr
, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1859 pstrcpy(ifname
, ifname_size
, ifr
.ifr_name
);
1860 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1865 static int launch_script(const char *setup_script
, const char *ifname
, int fd
)
1867 sigset_t oldmask
, mask
;
1873 sigaddset(&mask
, SIGCHLD
);
1874 sigprocmask(SIG_BLOCK
, &mask
, &oldmask
);
1876 /* try to launch network script */
1879 int open_max
= sysconf(_SC_OPEN_MAX
), i
;
1881 for (i
= 0; i
< open_max
; i
++) {
1882 if (i
!= STDIN_FILENO
&&
1883 i
!= STDOUT_FILENO
&&
1884 i
!= STDERR_FILENO
&&
1890 *parg
++ = (char *)setup_script
;
1891 *parg
++ = (char *)ifname
;
1893 execv(setup_script
, args
);
1895 } else if (pid
> 0) {
1896 while (waitpid(pid
, &status
, 0) != pid
) {
1899 sigprocmask(SIG_SETMASK
, &oldmask
, NULL
);
1901 if (WIFEXITED(status
) && WEXITSTATUS(status
) == 0) {
1905 fprintf(stderr
, "%s: could not launch network script\n", setup_script
);
1909 static int net_tap_init(QemuOpts
*opts
, int *vnet_hdr
)
1911 int fd
, vnet_hdr_required
;
1912 char ifname
[128] = {0,};
1913 const char *setup_script
;
1915 if (qemu_opt_get(opts
, "ifname")) {
1916 pstrcpy(ifname
, sizeof(ifname
), qemu_opt_get(opts
, "ifname"));
1919 *vnet_hdr
= qemu_opt_get_bool(opts
, "vnet_hdr", 1);
1920 if (qemu_opt_get(opts
, "vnet_hdr")) {
1921 vnet_hdr_required
= *vnet_hdr
;
1923 vnet_hdr_required
= 0;
1926 TFR(fd
= tap_open(ifname
, sizeof(ifname
), vnet_hdr
, vnet_hdr_required
));
1931 setup_script
= qemu_opt_get(opts
, "script");
1933 setup_script
[0] != '\0' &&
1934 strcmp(setup_script
, "no") != 0 &&
1935 launch_script(setup_script
, ifname
, fd
)) {
1940 qemu_opt_set(opts
, "ifname", ifname
);
1945 #endif /* !_WIN32 */
1947 #if defined(CONFIG_VDE)
1948 typedef struct VDEState
{
1949 VLANClientState
*vc
;
1953 static void vde_to_qemu(void *opaque
)
1955 VDEState
*s
= opaque
;
1959 size
= vde_recv(s
->vde
, (char *)buf
, sizeof(buf
), 0);
1961 qemu_send_packet(s
->vc
, buf
, size
);
1965 static ssize_t
vde_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1967 VDEState
*s
= vc
->opaque
;
1971 ret
= vde_send(s
->vde
, (const char *)buf
, size
, 0);
1972 } while (ret
< 0 && errno
== EINTR
);
1977 static void vde_cleanup(VLANClientState
*vc
)
1979 VDEState
*s
= vc
->opaque
;
1980 qemu_set_fd_handler(vde_datafd(s
->vde
), NULL
, NULL
, NULL
);
1985 static int net_vde_init(VLANState
*vlan
, const char *model
,
1986 const char *name
, const char *sock
,
1987 int port
, const char *group
, int mode
)
1990 char *init_group
= (char *)group
;
1991 char *init_sock
= (char *)sock
;
1993 struct vde_open_args args
= {
1995 .group
= init_group
,
1999 s
= qemu_mallocz(sizeof(VDEState
));
2000 s
->vde
= vde_open(init_sock
, (char *)"QEMU", &args
);
2005 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_VDE
,
2006 vlan
, NULL
, model
, name
, NULL
,
2009 qemu_set_fd_handler(vde_datafd(s
->vde
), vde_to_qemu
, NULL
, s
);
2010 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
), "sock=%s,fd=%d",
2011 sock
, vde_datafd(s
->vde
));
2016 /* network connection */
2017 typedef struct NetSocketState
{
2018 VLANClientState
*vc
;
2020 int state
; /* 0 = getting length, 1 = getting data */
2022 unsigned int packet_len
;
2024 struct sockaddr_in dgram_dst
; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
2027 typedef struct NetSocketListenState
{
2032 } NetSocketListenState
;
2034 /* XXX: we consider we can send the whole packet without blocking */
2035 static ssize_t
net_socket_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
2037 NetSocketState
*s
= vc
->opaque
;
2041 send_all(s
->fd
, (const uint8_t *)&len
, sizeof(len
));
2042 return send_all(s
->fd
, buf
, size
);
2045 static ssize_t
net_socket_receive_dgram(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
2047 NetSocketState
*s
= vc
->opaque
;
2049 return sendto(s
->fd
, (const void *)buf
, size
, 0,
2050 (struct sockaddr
*)&s
->dgram_dst
, sizeof(s
->dgram_dst
));
2053 static void net_socket_send(void *opaque
)
2055 NetSocketState
*s
= opaque
;
2061 size
= recv(s
->fd
, (void *)buf1
, sizeof(buf1
), 0);
2063 err
= socket_error();
2064 if (err
!= EWOULDBLOCK
)
2066 } else if (size
== 0) {
2067 /* end of connection */
2069 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
2075 /* reassemble a packet from the network */
2081 memcpy(s
->buf
+ s
->index
, buf
, l
);
2085 if (s
->index
== 4) {
2087 s
->packet_len
= ntohl(*(uint32_t *)s
->buf
);
2093 l
= s
->packet_len
- s
->index
;
2096 if (s
->index
+ l
<= sizeof(s
->buf
)) {
2097 memcpy(s
->buf
+ s
->index
, buf
, l
);
2099 fprintf(stderr
, "serious error: oversized packet received,"
2100 "connection terminated.\n");
2108 if (s
->index
>= s
->packet_len
) {
2109 qemu_send_packet(s
->vc
, s
->buf
, s
->packet_len
);
2118 static void net_socket_send_dgram(void *opaque
)
2120 NetSocketState
*s
= opaque
;
2123 size
= recv(s
->fd
, (void *)s
->buf
, sizeof(s
->buf
), 0);
2127 /* end of connection */
2128 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
2131 qemu_send_packet(s
->vc
, s
->buf
, size
);
2134 static int net_socket_mcast_create(struct sockaddr_in
*mcastaddr
)
2139 if (!IN_MULTICAST(ntohl(mcastaddr
->sin_addr
.s_addr
))) {
2140 fprintf(stderr
, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
2141 inet_ntoa(mcastaddr
->sin_addr
),
2142 (int)ntohl(mcastaddr
->sin_addr
.s_addr
));
2146 fd
= socket(PF_INET
, SOCK_DGRAM
, 0);
2148 perror("socket(PF_INET, SOCK_DGRAM)");
2153 ret
=setsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
,
2154 (const char *)&val
, sizeof(val
));
2156 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
2160 ret
= bind(fd
, (struct sockaddr
*)mcastaddr
, sizeof(*mcastaddr
));
2166 /* Add host to multicast group */
2167 imr
.imr_multiaddr
= mcastaddr
->sin_addr
;
2168 imr
.imr_interface
.s_addr
= htonl(INADDR_ANY
);
2170 ret
= setsockopt(fd
, IPPROTO_IP
, IP_ADD_MEMBERSHIP
,
2171 (const char *)&imr
, sizeof(struct ip_mreq
));
2173 perror("setsockopt(IP_ADD_MEMBERSHIP)");
2177 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
2179 ret
=setsockopt(fd
, IPPROTO_IP
, IP_MULTICAST_LOOP
,
2180 (const char *)&val
, sizeof(val
));
2182 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
2186 socket_set_nonblock(fd
);
2194 static void net_socket_cleanup(VLANClientState
*vc
)
2196 NetSocketState
*s
= vc
->opaque
;
2197 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
2202 static NetSocketState
*net_socket_fd_init_dgram(VLANState
*vlan
,
2205 int fd
, int is_connected
)
2207 struct sockaddr_in saddr
;
2209 socklen_t saddr_len
;
2212 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
2213 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
2214 * by ONLY ONE process: we must "clone" this dgram socket --jjo
2218 if (getsockname(fd
, (struct sockaddr
*) &saddr
, &saddr_len
) == 0) {
2220 if (saddr
.sin_addr
.s_addr
==0) {
2221 fprintf(stderr
, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
2225 /* clone dgram socket */
2226 newfd
= net_socket_mcast_create(&saddr
);
2228 /* error already reported by net_socket_mcast_create() */
2232 /* clone newfd to fd, close newfd */
2237 fprintf(stderr
, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2238 fd
, strerror(errno
));
2243 s
= qemu_mallocz(sizeof(NetSocketState
));
2246 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET
,
2247 vlan
, NULL
, model
, name
, NULL
,
2248 net_socket_receive_dgram
, NULL
,
2249 net_socket_cleanup
, s
);
2250 qemu_set_fd_handler(s
->fd
, net_socket_send_dgram
, NULL
, s
);
2252 /* mcast: save bound address as dst */
2253 if (is_connected
) s
->dgram_dst
=saddr
;
2255 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2256 "socket: fd=%d (%s mcast=%s:%d)",
2257 fd
, is_connected
? "cloned" : "",
2258 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2262 static void net_socket_connect(void *opaque
)
2264 NetSocketState
*s
= opaque
;
2265 qemu_set_fd_handler(s
->fd
, net_socket_send
, NULL
, s
);
2268 static NetSocketState
*net_socket_fd_init_stream(VLANState
*vlan
,
2271 int fd
, int is_connected
)
2274 s
= qemu_mallocz(sizeof(NetSocketState
));
2276 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET
,
2277 vlan
, NULL
, model
, name
, NULL
,
2278 net_socket_receive
, NULL
,
2279 net_socket_cleanup
, s
);
2280 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2281 "socket: fd=%d", fd
);
2283 net_socket_connect(s
);
2285 qemu_set_fd_handler(s
->fd
, NULL
, net_socket_connect
, s
);
2290 static NetSocketState
*net_socket_fd_init(VLANState
*vlan
,
2291 const char *model
, const char *name
,
2292 int fd
, int is_connected
)
2294 int so_type
= -1, optlen
=sizeof(so_type
);
2296 if(getsockopt(fd
, SOL_SOCKET
, SO_TYPE
, (char *)&so_type
,
2297 (socklen_t
*)&optlen
)< 0) {
2298 fprintf(stderr
, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd
);
2303 return net_socket_fd_init_dgram(vlan
, model
, name
, fd
, is_connected
);
2305 return net_socket_fd_init_stream(vlan
, model
, name
, fd
, is_connected
);
2307 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2308 fprintf(stderr
, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type
, fd
);
2309 return net_socket_fd_init_stream(vlan
, model
, name
, fd
, is_connected
);
2314 static void net_socket_accept(void *opaque
)
2316 NetSocketListenState
*s
= opaque
;
2318 struct sockaddr_in saddr
;
2323 len
= sizeof(saddr
);
2324 fd
= accept(s
->fd
, (struct sockaddr
*)&saddr
, &len
);
2325 if (fd
< 0 && errno
!= EINTR
) {
2327 } else if (fd
>= 0) {
2331 s1
= net_socket_fd_init(s
->vlan
, s
->model
, s
->name
, fd
, 1);
2335 snprintf(s1
->vc
->info_str
, sizeof(s1
->vc
->info_str
),
2336 "socket: connection from %s:%d",
2337 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2341 static int net_socket_listen_init(VLANState
*vlan
,
2344 const char *host_str
)
2346 NetSocketListenState
*s
;
2348 struct sockaddr_in saddr
;
2350 if (parse_host_port(&saddr
, host_str
) < 0)
2353 s
= qemu_mallocz(sizeof(NetSocketListenState
));
2355 fd
= socket(PF_INET
, SOCK_STREAM
, 0);
2360 socket_set_nonblock(fd
);
2362 /* allow fast reuse */
2364 setsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, (const char *)&val
, sizeof(val
));
2366 ret
= bind(fd
, (struct sockaddr
*)&saddr
, sizeof(saddr
));
2371 ret
= listen(fd
, 0);
2377 s
->model
= qemu_strdup(model
);
2378 s
->name
= name
? qemu_strdup(name
) : NULL
;
2380 qemu_set_fd_handler(fd
, net_socket_accept
, NULL
, s
);
2384 static int net_socket_connect_init(VLANState
*vlan
,
2387 const char *host_str
)
2390 int fd
, connected
, ret
, err
;
2391 struct sockaddr_in saddr
;
2393 if (parse_host_port(&saddr
, host_str
) < 0)
2396 fd
= socket(PF_INET
, SOCK_STREAM
, 0);
2401 socket_set_nonblock(fd
);
2405 ret
= connect(fd
, (struct sockaddr
*)&saddr
, sizeof(saddr
));
2407 err
= socket_error();
2408 if (err
== EINTR
|| err
== EWOULDBLOCK
) {
2409 } else if (err
== EINPROGRESS
) {
2412 } else if (err
== WSAEALREADY
) {
2425 s
= net_socket_fd_init(vlan
, model
, name
, fd
, connected
);
2428 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2429 "socket: connect to %s:%d",
2430 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2434 static int net_socket_mcast_init(VLANState
*vlan
,
2437 const char *host_str
)
2441 struct sockaddr_in saddr
;
2443 if (parse_host_port(&saddr
, host_str
) < 0)
2447 fd
= net_socket_mcast_create(&saddr
);
2451 s
= net_socket_fd_init(vlan
, model
, name
, fd
, 0);
2455 s
->dgram_dst
= saddr
;
2457 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2458 "socket: mcast=%s:%d",
2459 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2464 typedef struct DumpState
{
2465 VLANClientState
*pcap_vc
;
2470 #define PCAP_MAGIC 0xa1b2c3d4
2472 struct pcap_file_hdr
{
2474 uint16_t version_major
;
2475 uint16_t version_minor
;
2482 struct pcap_sf_pkthdr
{
2491 static ssize_t
dump_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
2493 DumpState
*s
= vc
->opaque
;
2494 struct pcap_sf_pkthdr hdr
;
2498 /* Early return in case of previous error. */
2503 ts
= muldiv64(qemu_get_clock(vm_clock
), 1000000, get_ticks_per_sec());
2504 caplen
= size
> s
->pcap_caplen
? s
->pcap_caplen
: size
;
2506 hdr
.ts
.tv_sec
= ts
/ 1000000;
2507 hdr
.ts
.tv_usec
= ts
% 1000000;
2508 hdr
.caplen
= caplen
;
2510 if (write(s
->fd
, &hdr
, sizeof(hdr
)) != sizeof(hdr
) ||
2511 write(s
->fd
, buf
, caplen
) != caplen
) {
2512 qemu_log("-net dump write error - stop dump\n");
2520 static void net_dump_cleanup(VLANClientState
*vc
)
2522 DumpState
*s
= vc
->opaque
;
2528 static int net_dump_init(VLANState
*vlan
, const char *device
,
2529 const char *name
, const char *filename
, int len
)
2531 struct pcap_file_hdr hdr
;
2534 s
= qemu_malloc(sizeof(DumpState
));
2536 s
->fd
= open(filename
, O_CREAT
| O_WRONLY
| O_BINARY
, 0644);
2538 qemu_error("-net dump: can't open %s\n", filename
);
2542 s
->pcap_caplen
= len
;
2544 hdr
.magic
= PCAP_MAGIC
;
2545 hdr
.version_major
= 2;
2546 hdr
.version_minor
= 4;
2549 hdr
.snaplen
= s
->pcap_caplen
;
2552 if (write(s
->fd
, &hdr
, sizeof(hdr
)) < sizeof(hdr
)) {
2553 qemu_error("-net dump write error: %s\n", strerror(errno
));
2559 s
->pcap_vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP
,
2560 vlan
, NULL
, device
, name
, NULL
,
2562 net_dump_cleanup
, s
);
2563 snprintf(s
->pcap_vc
->info_str
, sizeof(s
->pcap_vc
->info_str
),
2564 "dump to %s (len=%d)", filename
, len
);
2568 /* find or alloc a new VLAN */
2569 VLANState
*qemu_find_vlan(int id
, int allocate
)
2573 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
2574 if (vlan
->id
== id
) {
2583 vlan
= qemu_mallocz(sizeof(VLANState
));
2585 QTAILQ_INIT(&vlan
->clients
);
2587 vlan
->send_queue
= qemu_new_net_queue(qemu_vlan_deliver_packet
,
2588 qemu_vlan_deliver_packet_iov
,
2591 QTAILQ_INSERT_TAIL(&vlans
, vlan
, next
);
2596 VLANClientState
*qemu_find_netdev(const char *id
)
2598 VLANClientState
*vc
;
2600 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
2601 if (!strcmp(vc
->name
, id
)) {
2609 static int nic_get_free_idx(void)
2613 for (index
= 0; index
< MAX_NICS
; index
++)
2614 if (!nd_table
[index
].used
)
2619 int qemu_show_nic_models(const char *arg
, const char *const *models
)
2623 if (!arg
|| strcmp(arg
, "?"))
2626 fprintf(stderr
, "qemu: Supported NIC models: ");
2627 for (i
= 0 ; models
[i
]; i
++)
2628 fprintf(stderr
, "%s%c", models
[i
], models
[i
+1] ? ',' : '\n');
2632 void qemu_check_nic_model(NICInfo
*nd
, const char *model
)
2634 const char *models
[2];
2639 if (qemu_show_nic_models(nd
->model
, models
))
2641 if (qemu_find_nic_model(nd
, models
, model
) < 0)
2645 int qemu_find_nic_model(NICInfo
*nd
, const char * const *models
,
2646 const char *default_model
)
2651 nd
->model
= qemu_strdup(default_model
);
2653 for (i
= 0 ; models
[i
]; i
++) {
2654 if (strcmp(nd
->model
, models
[i
]) == 0)
2658 qemu_error("qemu: Unsupported NIC model: %s\n", nd
->model
);
2662 static int net_handle_fd_param(Monitor
*mon
, const char *param
)
2664 if (!qemu_isdigit(param
[0])) {
2667 fd
= monitor_get_fd(mon
, param
);
2669 qemu_error("No file descriptor named %s found", param
);
2675 return strtol(param
, NULL
, 0);
2679 static int net_init_nic(QemuOpts
*opts
,
2688 idx
= nic_get_free_idx();
2689 if (idx
== -1 || nb_nics
>= MAX_NICS
) {
2690 qemu_error("Too Many NICs\n");
2694 nd
= &nd_table
[idx
];
2696 memset(nd
, 0, sizeof(*nd
));
2698 if ((netdev
= qemu_opt_get(opts
, "netdev"))) {
2699 nd
->netdev
= qemu_find_netdev(netdev
);
2701 qemu_error("netdev '%s' not found\n", netdev
);
2709 nd
->name
= qemu_strdup(name
);
2711 if (qemu_opt_get(opts
, "model")) {
2712 nd
->model
= qemu_strdup(qemu_opt_get(opts
, "model"));
2714 if (qemu_opt_get(opts
, "addr")) {
2715 nd
->devaddr
= qemu_strdup(qemu_opt_get(opts
, "addr"));
2718 nd
->macaddr
[0] = 0x52;
2719 nd
->macaddr
[1] = 0x54;
2720 nd
->macaddr
[2] = 0x00;
2721 nd
->macaddr
[3] = 0x12;
2722 nd
->macaddr
[4] = 0x34;
2723 nd
->macaddr
[5] = 0x56 + idx
;
2725 if (qemu_opt_get(opts
, "macaddr") &&
2726 parse_macaddr(nd
->macaddr
, qemu_opt_get(opts
, "macaddr")) < 0) {
2727 qemu_error("invalid syntax for ethernet address\n");
2731 nd
->nvectors
= qemu_opt_get_number(opts
, "vectors", NIC_NVECTORS_UNSPECIFIED
);
2732 if (nd
->nvectors
!= NIC_NVECTORS_UNSPECIFIED
&&
2733 (nd
->nvectors
< 0 || nd
->nvectors
> 0x7ffffff)) {
2734 qemu_error("invalid # of vectors: %d\n", nd
->nvectors
);
2740 nd
->vlan
->nb_guest_devs
++;
2747 #if defined(CONFIG_SLIRP)
2748 static int net_init_slirp_configs(const char *name
, const char *value
, void *opaque
)
2750 struct slirp_config_str
*config
;
2752 if (strcmp(name
, "hostfwd") != 0 && strcmp(name
, "guestfwd") != 0) {
2756 config
= qemu_mallocz(sizeof(*config
));
2758 pstrcpy(config
->str
, sizeof(config
->str
), value
);
2760 if (!strcmp(name
, "hostfwd")) {
2761 config
->flags
= SLIRP_CFG_HOSTFWD
;
2764 config
->next
= slirp_configs
;
2765 slirp_configs
= config
;
2770 static int net_init_slirp(QemuOpts
*opts
,
2775 struct slirp_config_str
*config
;
2777 const char *vhostname
;
2778 const char *vdhcp_start
;
2779 const char *vnamesrv
;
2780 const char *tftp_export
;
2781 const char *bootfile
;
2782 const char *smb_export
;
2783 const char *vsmbsrv
;
2788 vhost
= qemu_opt_get(opts
, "host");
2789 vhostname
= qemu_opt_get(opts
, "hostname");
2790 vdhcp_start
= qemu_opt_get(opts
, "dhcpstart");
2791 vnamesrv
= qemu_opt_get(opts
, "dns");
2792 tftp_export
= qemu_opt_get(opts
, "tftp");
2793 bootfile
= qemu_opt_get(opts
, "bootfile");
2794 smb_export
= qemu_opt_get(opts
, "smb");
2795 vsmbsrv
= qemu_opt_get(opts
, "smbserver");
2797 if (qemu_opt_get(opts
, "ip")) {
2798 const char *ip
= qemu_opt_get(opts
, "ip");
2799 int l
= strlen(ip
) + strlen("/24") + 1;
2801 vnet
= qemu_malloc(l
);
2803 /* emulate legacy ip= parameter */
2804 pstrcpy(vnet
, l
, ip
);
2805 pstrcat(vnet
, l
, "/24");
2808 if (qemu_opt_get(opts
, "net")) {
2812 vnet
= qemu_strdup(qemu_opt_get(opts
, "net"));
2815 if (qemu_opt_get(opts
, "restrict") &&
2816 qemu_opt_get(opts
, "restrict")[0] == 'y') {
2820 qemu_opt_foreach(opts
, net_init_slirp_configs
, NULL
, 0);
2822 ret
= net_slirp_init(vlan
, "user", name
, restricted
, vnet
, vhost
,
2823 vhostname
, tftp_export
, bootfile
, vdhcp_start
,
2824 vnamesrv
, smb_export
, vsmbsrv
);
2826 while (slirp_configs
) {
2827 config
= slirp_configs
;
2828 slirp_configs
= config
->next
;
2832 if (ret
!= -1 && vlan
) {
2833 vlan
->nb_host_devs
++;
2840 #endif /* CONFIG_SLIRP */
2843 static int net_init_tap_win32(QemuOpts
*opts
,
2850 ifname
= qemu_opt_get(opts
, "ifname");
2853 qemu_error("tap: no interface name\n");
2857 if (tap_win32_init(vlan
, "tap", name
, ifname
) == -1) {
2862 vlan
->nb_host_devs
++;
2867 #elif !defined(_AIX)
2868 static int net_init_tap(QemuOpts
*opts
,
2876 if (qemu_opt_get(opts
, "fd")) {
2877 if (qemu_opt_get(opts
, "ifname") ||
2878 qemu_opt_get(opts
, "script") ||
2879 qemu_opt_get(opts
, "downscript") ||
2880 qemu_opt_get(opts
, "vnet_hdr")) {
2881 qemu_error("ifname=, script=, downscript= and vnet_hdr= is invalid with fd=\n");
2885 fd
= net_handle_fd_param(mon
, qemu_opt_get(opts
, "fd"));
2890 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
2892 vnet_hdr
= tap_probe_vnet_hdr(fd
);
2894 if (!qemu_opt_get(opts
, "script")) {
2895 qemu_opt_set(opts
, "script", DEFAULT_NETWORK_SCRIPT
);
2898 if (!qemu_opt_get(opts
, "downscript")) {
2899 qemu_opt_set(opts
, "downscript", DEFAULT_NETWORK_DOWN_SCRIPT
);
2902 fd
= net_tap_init(opts
, &vnet_hdr
);
2905 s
= net_tap_fd_init(vlan
, "tap", name
, fd
, vnet_hdr
);
2911 if (tap_set_sndbuf(s
, opts
) < 0) {
2915 if (qemu_opt_get(opts
, "fd")) {
2916 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
), "fd=%d", fd
);
2918 const char *ifname
, *script
, *downscript
;
2920 ifname
= qemu_opt_get(opts
, "ifname");
2921 script
= qemu_opt_get(opts
, "script");
2922 downscript
= qemu_opt_get(opts
, "downscript");
2924 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2925 "ifname=%s,script=%s,downscript=%s",
2926 ifname
, script
, downscript
);
2928 if (strcmp(downscript
, "no") != 0) {
2929 snprintf(s
->down_script
, sizeof(s
->down_script
), "%s", downscript
);
2930 snprintf(s
->down_script_arg
, sizeof(s
->down_script_arg
), "%s", ifname
);
2935 vlan
->nb_host_devs
++;
2942 static int net_init_socket(QemuOpts
*opts
,
2947 if (qemu_opt_get(opts
, "fd")) {
2950 if (qemu_opt_get(opts
, "listen") ||
2951 qemu_opt_get(opts
, "connect") ||
2952 qemu_opt_get(opts
, "mcast")) {
2953 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2957 fd
= net_handle_fd_param(mon
, qemu_opt_get(opts
, "fd"));
2962 if (!net_socket_fd_init(vlan
, "socket", name
, fd
, 1)) {
2966 } else if (qemu_opt_get(opts
, "listen")) {
2969 if (qemu_opt_get(opts
, "fd") ||
2970 qemu_opt_get(opts
, "connect") ||
2971 qemu_opt_get(opts
, "mcast")) {
2972 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2976 listen
= qemu_opt_get(opts
, "listen");
2978 if (net_socket_listen_init(vlan
, "socket", name
, listen
) == -1) {
2981 } else if (qemu_opt_get(opts
, "connect")) {
2982 const char *connect
;
2984 if (qemu_opt_get(opts
, "fd") ||
2985 qemu_opt_get(opts
, "listen") ||
2986 qemu_opt_get(opts
, "mcast")) {
2987 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2991 connect
= qemu_opt_get(opts
, "connect");
2993 if (net_socket_connect_init(vlan
, "socket", name
, connect
) == -1) {
2996 } else if (qemu_opt_get(opts
, "mcast")) {
2999 if (qemu_opt_get(opts
, "fd") ||
3000 qemu_opt_get(opts
, "connect") ||
3001 qemu_opt_get(opts
, "listen")) {
3002 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
3006 mcast
= qemu_opt_get(opts
, "mcast");
3008 if (net_socket_mcast_init(vlan
, "socket", name
, mcast
) == -1) {
3012 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
3017 vlan
->nb_host_devs
++;
3024 static int net_init_vde(QemuOpts
*opts
,
3033 sock
= qemu_opt_get(opts
, "sock");
3034 group
= qemu_opt_get(opts
, "group");
3036 port
= qemu_opt_get_number(opts
, "port", 0);
3037 mode
= qemu_opt_get_number(opts
, "mode", 0700);
3039 if (net_vde_init(vlan
, "vde", name
, sock
, port
, group
, mode
) == -1) {
3044 vlan
->nb_host_devs
++;
3051 static int net_init_dump(QemuOpts
*opts
,
3062 file
= qemu_opt_get(opts
, "file");
3064 snprintf(def_file
, sizeof(def_file
), "qemu-vlan%d.pcap", vlan
->id
);
3068 len
= qemu_opt_get_size(opts
, "len", 65536);
3070 return net_dump_init(vlan
, "dump", name
, file
, len
);
3073 #define NET_COMMON_PARAMS_DESC \
3076 .type = QEMU_OPT_STRING, \
3077 .help = "net client type (nic, tap etc.)", \
3080 .type = QEMU_OPT_NUMBER, \
3081 .help = "vlan number", \
3084 .type = QEMU_OPT_STRING, \
3085 .help = "identifier for monitor commands", \
3088 typedef int (*net_client_init_func
)(QemuOpts
*opts
,
3093 /* magic number, but compiler will warn if too small */
3094 #define NET_MAX_DESC 20
3098 net_client_init_func init
;
3099 QemuOptDesc desc
[NET_MAX_DESC
];
3100 } net_client_types
[] = {
3104 NET_COMMON_PARAMS_DESC
,
3105 { /* end of list */ }
3109 .init
= net_init_nic
,
3111 NET_COMMON_PARAMS_DESC
,
3114 .type
= QEMU_OPT_STRING
,
3115 .help
= "id of -netdev to connect to",
3119 .type
= QEMU_OPT_STRING
,
3120 .help
= "MAC address",
3123 .type
= QEMU_OPT_STRING
,
3124 .help
= "device model (e1000, rtl8139, virtio etc.)",
3127 .type
= QEMU_OPT_STRING
,
3128 .help
= "PCI device address",
3131 .type
= QEMU_OPT_NUMBER
,
3132 .help
= "number of MSI-x vectors, 0 to disable MSI-X",
3134 { /* end of list */ }
3139 .init
= net_init_slirp
,
3141 NET_COMMON_PARAMS_DESC
,
3144 .type
= QEMU_OPT_STRING
,
3145 .help
= "client hostname reported by the builtin DHCP server",
3148 .type
= QEMU_OPT_STRING
,
3149 .help
= "isolate the guest from the host (y|yes|n|no)",
3152 .type
= QEMU_OPT_STRING
,
3153 .help
= "legacy parameter, use net= instead",
3156 .type
= QEMU_OPT_STRING
,
3157 .help
= "IP address and optional netmask",
3160 .type
= QEMU_OPT_STRING
,
3161 .help
= "guest-visible address of the host",
3164 .type
= QEMU_OPT_STRING
,
3165 .help
= "root directory of the built-in TFTP server",
3168 .type
= QEMU_OPT_STRING
,
3169 .help
= "BOOTP filename, for use with tftp=",
3171 .name
= "dhcpstart",
3172 .type
= QEMU_OPT_STRING
,
3173 .help
= "the first of the 16 IPs the built-in DHCP server can assign",
3176 .type
= QEMU_OPT_STRING
,
3177 .help
= "guest-visible address of the virtual nameserver",
3180 .type
= QEMU_OPT_STRING
,
3181 .help
= "root directory of the built-in SMB server",
3183 .name
= "smbserver",
3184 .type
= QEMU_OPT_STRING
,
3185 .help
= "IP address of the built-in SMB server",
3188 .type
= QEMU_OPT_STRING
,
3189 .help
= "guest port number to forward incoming TCP or UDP connections",
3192 .type
= QEMU_OPT_STRING
,
3193 .help
= "IP address and port to forward guest TCP connections",
3195 { /* end of list */ }
3201 .init
= net_init_tap_win32
,
3203 NET_COMMON_PARAMS_DESC
,
3206 .type
= QEMU_OPT_STRING
,
3207 .help
= "interface name",
3209 { /* end of list */ }
3211 #elif !defined(_AIX)
3214 .init
= net_init_tap
,
3216 NET_COMMON_PARAMS_DESC
,
3219 .type
= QEMU_OPT_STRING
,
3220 .help
= "file descriptor of an already opened tap",
3223 .type
= QEMU_OPT_STRING
,
3224 .help
= "interface name",
3227 .type
= QEMU_OPT_STRING
,
3228 .help
= "script to initialize the interface",
3230 .name
= "downscript",
3231 .type
= QEMU_OPT_STRING
,
3232 .help
= "script to shut down the interface",
3235 .type
= QEMU_OPT_SIZE
,
3236 .help
= "send buffer limit"
3239 .type
= QEMU_OPT_BOOL
,
3240 .help
= "enable the IFF_VNET_HDR flag on the tap interface"
3242 { /* end of list */ }
3247 .init
= net_init_socket
,
3249 NET_COMMON_PARAMS_DESC
,
3252 .type
= QEMU_OPT_STRING
,
3253 .help
= "file descriptor of an already opened socket",
3256 .type
= QEMU_OPT_STRING
,
3257 .help
= "port number, and optional hostname, to listen on",
3260 .type
= QEMU_OPT_STRING
,
3261 .help
= "port number, and optional hostname, to connect to",
3264 .type
= QEMU_OPT_STRING
,
3265 .help
= "UDP multicast address and port number",
3267 { /* end of list */ }
3272 .init
= net_init_vde
,
3274 NET_COMMON_PARAMS_DESC
,
3277 .type
= QEMU_OPT_STRING
,
3278 .help
= "socket path",
3281 .type
= QEMU_OPT_NUMBER
,
3282 .help
= "port number",
3285 .type
= QEMU_OPT_STRING
,
3286 .help
= "group owner of socket",
3289 .type
= QEMU_OPT_NUMBER
,
3290 .help
= "permissions for socket",
3292 { /* end of list */ }
3297 .init
= net_init_dump
,
3299 NET_COMMON_PARAMS_DESC
,
3302 .type
= QEMU_OPT_SIZE
,
3303 .help
= "per-packet size limit (64k default)",
3306 .type
= QEMU_OPT_STRING
,
3307 .help
= "dump file path (default is qemu-vlan0.pcap)",
3309 { /* end of list */ }
3312 { /* end of list */ }
3315 int net_client_init(Monitor
*mon
, QemuOpts
*opts
, int is_netdev
)
3321 type
= qemu_opt_get(opts
, "type");
3323 qemu_error("No type specified for -net\n");
3328 if (strcmp(type
, "tap") != 0 &&
3330 strcmp(type
, "user") != 0 &&
3333 strcmp(type
, "vde") != 0 &&
3335 strcmp(type
, "socket") != 0) {
3336 qemu_error("The '%s' network backend type is not valid with -netdev\n",
3341 if (qemu_opt_get(opts
, "vlan")) {
3342 qemu_error("The 'vlan' parameter is not valid with -netdev\n");
3345 if (qemu_opt_get(opts
, "name")) {
3346 qemu_error("The 'name' parameter is not valid with -netdev\n");
3349 if (!qemu_opts_id(opts
)) {
3350 qemu_error("The id= parameter is required with -netdev\n");
3355 name
= qemu_opts_id(opts
);
3357 name
= qemu_opt_get(opts
, "name");
3360 for (i
= 0; net_client_types
[i
].type
!= NULL
; i
++) {
3361 if (!strcmp(net_client_types
[i
].type
, type
)) {
3362 VLANState
*vlan
= NULL
;
3364 if (qemu_opts_validate(opts
, &net_client_types
[i
].desc
[0]) == -1) {
3368 /* Do not add to a vlan if it's a -netdev or a nic with a
3369 * netdev= parameter. */
3371 (strcmp(type
, "nic") == 0 && qemu_opt_get(opts
, "netdev")))) {
3372 vlan
= qemu_find_vlan(qemu_opt_get_number(opts
, "vlan", 0), 1);
3375 if (net_client_types
[i
].init
) {
3376 return net_client_types
[i
].init(opts
, mon
, name
, vlan
);
3383 qemu_error("Invalid -net type '%s'\n", type
);
3387 void net_client_uninit(NICInfo
*nd
)
3390 nd
->vlan
->nb_guest_devs
--;
3394 qemu_free(nd
->model
);
3395 qemu_free(nd
->name
);
3396 qemu_free(nd
->devaddr
);
3401 static int net_host_check_device(const char *device
)
3404 const char *valid_param_list
[] = { "tap", "socket", "dump"
3412 for (i
= 0; i
< sizeof(valid_param_list
) / sizeof(char *); i
++) {
3413 if (!strncmp(valid_param_list
[i
], device
,
3414 strlen(valid_param_list
[i
])))
3421 void net_host_device_add(Monitor
*mon
, const QDict
*qdict
)
3423 const char *device
= qdict_get_str(qdict
, "device");
3424 const char *opts_str
= qdict_get_try_str(qdict
, "opts");
3427 if (!net_host_check_device(device
)) {
3428 monitor_printf(mon
, "invalid host network device %s\n", device
);
3432 opts
= qemu_opts_parse(&qemu_net_opts
, opts_str
? opts_str
: "", NULL
);
3434 monitor_printf(mon
, "parsing network options '%s' failed\n",
3435 opts_str
? opts_str
: "");
3439 qemu_opt_set(opts
, "type", device
);
3441 if (net_client_init(mon
, opts
, 0) < 0) {
3442 monitor_printf(mon
, "adding host network device %s failed\n", device
);
3446 void net_host_device_remove(Monitor
*mon
, const QDict
*qdict
)
3448 VLANClientState
*vc
;
3449 int vlan_id
= qdict_get_int(qdict
, "vlan_id");
3450 const char *device
= qdict_get_str(qdict
, "device");
3452 vc
= qemu_find_vlan_client_by_name(mon
, vlan_id
, device
);
3456 if (!net_host_check_device(vc
->model
)) {
3457 monitor_printf(mon
, "invalid host network device %s\n", device
);
3460 qemu_del_vlan_client(vc
);
3463 void net_set_boot_mask(int net_boot_mask
)
3467 /* Only the first four NICs may be bootable */
3468 net_boot_mask
= net_boot_mask
& 0xF;
3470 for (i
= 0; i
< nb_nics
; i
++) {
3471 if (net_boot_mask
& (1 << i
)) {
3472 nd_table
[i
].bootable
= 1;
3473 net_boot_mask
&= ~(1 << i
);
3477 if (net_boot_mask
) {
3478 fprintf(stderr
, "Cannot boot from non-existent NIC\n");
3483 void do_info_network(Monitor
*mon
)
3487 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3488 VLANClientState
*vc
;
3490 monitor_printf(mon
, "VLAN %d devices:\n", vlan
->id
);
3492 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
3493 monitor_printf(mon
, " %s: %s\n", vc
->name
, vc
->info_str
);
3498 void do_set_link(Monitor
*mon
, const QDict
*qdict
)
3501 VLANClientState
*vc
= NULL
;
3502 const char *name
= qdict_get_str(qdict
, "name");
3503 const char *up_or_down
= qdict_get_str(qdict
, "up_or_down");
3505 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3506 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
3507 if (strcmp(vc
->name
, name
) == 0) {
3515 monitor_printf(mon
, "could not find network device '%s'\n", name
);
3519 if (strcmp(up_or_down
, "up") == 0)
3521 else if (strcmp(up_or_down
, "down") == 0)
3524 monitor_printf(mon
, "invalid link status '%s'; only 'up' or 'down' "
3525 "valid\n", up_or_down
);
3527 if (vc
->link_status_changed
)
3528 vc
->link_status_changed(vc
);
3531 void net_cleanup(void)
3534 VLANClientState
*vc
, *next_vc
;
3536 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3537 QTAILQ_FOREACH_SAFE(vc
, &vlan
->clients
, next
, next_vc
) {
3538 qemu_del_vlan_client(vc
);
3542 QTAILQ_FOREACH_SAFE(vc
, &non_vlan_clients
, next
, next_vc
) {
3543 qemu_del_vlan_client(vc
);
3547 static void net_check_clients(void)
3551 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3552 if (vlan
->nb_guest_devs
== 0 && vlan
->nb_host_devs
== 0)
3554 if (vlan
->nb_guest_devs
== 0)
3555 fprintf(stderr
, "Warning: vlan %d with no nics\n", vlan
->id
);
3556 if (vlan
->nb_host_devs
== 0)
3558 "Warning: vlan %d is not connected to host network\n",
3563 static int net_init_client(QemuOpts
*opts
, void *dummy
)
3565 if (net_client_init(NULL
, opts
, 0) < 0)
3570 static int net_init_netdev(QemuOpts
*opts
, void *dummy
)
3572 return net_client_init(NULL
, opts
, 1);
3575 int net_init_clients(void)
3577 if (QTAILQ_EMPTY(&qemu_net_opts
.head
)) {
3578 /* if no clients, we use a default config */
3579 qemu_opts_set(&qemu_net_opts
, NULL
, "type", "nic");
3581 qemu_opts_set(&qemu_net_opts
, NULL
, "type", "user");
3585 QTAILQ_INIT(&vlans
);
3586 QTAILQ_INIT(&non_vlan_clients
);
3588 if (qemu_opts_foreach(&qemu_netdev_opts
, net_init_netdev
, NULL
, 1) == -1)
3591 if (qemu_opts_foreach(&qemu_net_opts
, net_init_client
, NULL
, 1) == -1) {
3595 net_check_clients();
3600 int net_client_parse(QemuOptsList
*opts_list
, const char *optarg
)
3602 #if defined(CONFIG_SLIRP)
3603 /* handle legacy -net channel,port:chr */
3604 if (!strcmp(opts_list
->name
, "net") &&
3605 !strncmp(optarg
, "channel,", strlen("channel,"))) {
3608 optarg
+= strlen("channel,");
3610 if (QTAILQ_EMPTY(&slirp_stacks
)) {
3611 struct slirp_config_str
*config
;
3613 config
= qemu_malloc(sizeof(*config
));
3614 pstrcpy(config
->str
, sizeof(config
->str
), optarg
);
3615 config
->flags
= SLIRP_CFG_LEGACY
;
3616 config
->next
= slirp_configs
;
3617 slirp_configs
= config
;
3620 ret
= slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks
), optarg
, 1);
3626 if (!qemu_opts_parse(opts_list
, optarg
, "type")) {