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 <linux/if_tun.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(VLANState
*vlan
,
331 VLANClientState
*peer
,
334 NetCanReceive
*can_receive
,
336 NetReceiveIOV
*receive_iov
,
342 vc
= qemu_mallocz(sizeof(VLANClientState
));
344 vc
->model
= qemu_strdup(model
);
346 vc
->name
= qemu_strdup(name
);
348 vc
->name
= assign_name(vc
, model
);
349 vc
->can_receive
= can_receive
;
350 vc
->receive
= receive
;
351 vc
->receive_iov
= receive_iov
;
352 vc
->cleanup
= cleanup
;
358 QTAILQ_INSERT_TAIL(&vc
->vlan
->clients
, vc
, next
);
364 QTAILQ_INSERT_TAIL(&non_vlan_clients
, vc
, next
);
366 vc
->send_queue
= qemu_new_net_queue(qemu_deliver_packet
,
367 qemu_deliver_packet_iov
,
374 void qemu_del_vlan_client(VLANClientState
*vc
)
377 QTAILQ_REMOVE(&vc
->vlan
->clients
, vc
, next
);
379 if (vc
->send_queue
) {
380 qemu_del_net_queue(vc
->send_queue
);
382 QTAILQ_REMOVE(&non_vlan_clients
, vc
, next
);
384 vc
->peer
->peer
= NULL
;
393 qemu_free(vc
->model
);
397 VLANClientState
*qemu_find_vlan_client(VLANState
*vlan
, void *opaque
)
401 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
402 if (vc
->opaque
== opaque
) {
410 static VLANClientState
*
411 qemu_find_vlan_client_by_name(Monitor
*mon
, int vlan_id
,
412 const char *client_str
)
417 vlan
= qemu_find_vlan(vlan_id
, 0);
419 monitor_printf(mon
, "unknown VLAN %d\n", vlan_id
);
423 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
424 if (!strcmp(vc
->name
, client_str
)) {
429 monitor_printf(mon
, "can't find device %s on VLAN %d\n",
430 client_str
, vlan_id
);
436 int qemu_can_send_packet(VLANClientState
*sender
)
438 VLANState
*vlan
= sender
->vlan
;
442 if (!sender
->peer
->can_receive
||
443 sender
->peer
->can_receive(sender
->peer
)) {
454 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
459 /* no can_receive() handler, they can always receive */
460 if (!vc
->can_receive
|| vc
->can_receive(vc
)) {
467 static ssize_t
qemu_deliver_packet(VLANClientState
*sender
,
473 VLANClientState
*vc
= opaque
;
479 if (raw
&& vc
->receive_raw
) {
480 return vc
->receive_raw(vc
, data
, size
);
482 return vc
->receive(vc
, data
, size
);
486 static ssize_t
qemu_vlan_deliver_packet(VLANClientState
*sender
,
492 VLANState
*vlan
= opaque
;
496 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
508 if (raw
&& vc
->receive_raw
) {
509 len
= vc
->receive_raw(vc
, buf
, size
);
511 len
= vc
->receive(vc
, buf
, size
);
514 ret
= (ret
>= 0) ? ret
: len
;
520 void qemu_purge_queued_packets(VLANClientState
*vc
)
524 if (!vc
->peer
&& !vc
->vlan
) {
529 queue
= vc
->peer
->send_queue
;
531 queue
= vc
->vlan
->send_queue
;
534 qemu_net_queue_purge(queue
, vc
);
537 void qemu_flush_queued_packets(VLANClientState
*vc
)
542 queue
= vc
->vlan
->send_queue
;
544 queue
= vc
->send_queue
;
547 qemu_net_queue_flush(queue
);
550 static ssize_t
qemu_send_packet_async2(VLANClientState
*sender
,
551 const uint8_t *buf
, int size
, int raw
,
552 NetPacketSent
*sent_cb
)
557 printf("qemu_send_packet_async:\n");
558 hex_dump(stdout
, buf
, size
);
561 if (sender
->link_down
|| (!sender
->peer
&& !sender
->vlan
)) {
566 queue
= sender
->peer
->send_queue
;
568 queue
= sender
->vlan
->send_queue
;
571 return qemu_net_queue_send(queue
, sender
, buf
, size
, raw
, sent_cb
);
574 ssize_t
qemu_send_packet_async(VLANClientState
*sender
,
575 const uint8_t *buf
, int size
,
576 NetPacketSent
*sent_cb
)
578 return qemu_send_packet_async2(sender
, buf
, size
, 0, sent_cb
);
581 ssize_t
qemu_send_packet(VLANClientState
*sender
, const uint8_t *buf
, int size
)
583 return qemu_send_packet_async2(sender
, buf
, size
, 0, NULL
);
586 ssize_t
qemu_send_packet_raw(VLANClientState
*sender
, const uint8_t *buf
, int size
)
588 return qemu_send_packet_async2(sender
, buf
, size
, 1, NULL
);
591 static ssize_t
vc_sendv_compat(VLANClientState
*vc
, const struct iovec
*iov
,
594 uint8_t buffer
[4096];
598 for (i
= 0; i
< iovcnt
; i
++) {
601 len
= MIN(sizeof(buffer
) - offset
, iov
[i
].iov_len
);
602 memcpy(buffer
+ offset
, iov
[i
].iov_base
, len
);
606 return vc
->receive(vc
, buffer
, offset
);
609 static ssize_t
calc_iov_length(const struct iovec
*iov
, int iovcnt
)
614 for (i
= 0; i
< iovcnt
; i
++)
615 offset
+= iov
[i
].iov_len
;
619 static ssize_t
qemu_deliver_packet_iov(VLANClientState
*sender
,
620 const struct iovec
*iov
,
624 VLANClientState
*vc
= opaque
;
627 return calc_iov_length(iov
, iovcnt
);
630 if (vc
->receive_iov
) {
631 return vc
->receive_iov(vc
, iov
, iovcnt
);
633 return vc_sendv_compat(vc
, iov
, iovcnt
);
637 static ssize_t
qemu_vlan_deliver_packet_iov(VLANClientState
*sender
,
638 const struct iovec
*iov
,
642 VLANState
*vlan
= opaque
;
646 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
654 ret
= calc_iov_length(iov
, iovcnt
);
658 if (vc
->receive_iov
) {
659 len
= vc
->receive_iov(vc
, iov
, iovcnt
);
661 len
= vc_sendv_compat(vc
, iov
, iovcnt
);
664 ret
= (ret
>= 0) ? ret
: len
;
670 ssize_t
qemu_sendv_packet_async(VLANClientState
*sender
,
671 const struct iovec
*iov
, int iovcnt
,
672 NetPacketSent
*sent_cb
)
676 if (sender
->link_down
|| (!sender
->peer
&& !sender
->vlan
)) {
677 return calc_iov_length(iov
, iovcnt
);
681 queue
= sender
->peer
->send_queue
;
683 queue
= sender
->vlan
->send_queue
;
686 return qemu_net_queue_send_iov(queue
, sender
, iov
, iovcnt
, sent_cb
);
690 qemu_sendv_packet(VLANClientState
*vc
, const struct iovec
*iov
, int iovcnt
)
692 return qemu_sendv_packet_async(vc
, iov
, iovcnt
, NULL
);
695 #if defined(CONFIG_SLIRP)
697 /* slirp network adapter */
699 #define SLIRP_CFG_HOSTFWD 1
700 #define SLIRP_CFG_LEGACY 2
702 struct slirp_config_str
{
703 struct slirp_config_str
*next
;
709 typedef struct SlirpState
{
710 QTAILQ_ENTRY(SlirpState
) entry
;
718 static struct slirp_config_str
*slirp_configs
;
719 const char *legacy_tftp_prefix
;
720 const char *legacy_bootp_filename
;
721 static QTAILQ_HEAD(slirp_stacks
, SlirpState
) slirp_stacks
=
722 QTAILQ_HEAD_INITIALIZER(slirp_stacks
);
724 static int slirp_hostfwd(SlirpState
*s
, const char *redir_str
,
726 static int slirp_guestfwd(SlirpState
*s
, const char *config_str
,
730 static const char *legacy_smb_export
;
732 static int slirp_smb(SlirpState
*s
, const char *exported_dir
,
733 struct in_addr vserver_addr
);
734 static void slirp_smb_cleanup(SlirpState
*s
);
736 static inline void slirp_smb_cleanup(SlirpState
*s
) { }
739 int slirp_can_output(void *opaque
)
741 SlirpState
*s
= opaque
;
743 return qemu_can_send_packet(s
->vc
);
746 void slirp_output(void *opaque
, const uint8_t *pkt
, int pkt_len
)
748 SlirpState
*s
= opaque
;
751 printf("slirp output:\n");
752 hex_dump(stdout
, pkt
, pkt_len
);
754 qemu_send_packet(s
->vc
, pkt
, pkt_len
);
757 static ssize_t
slirp_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
759 SlirpState
*s
= vc
->opaque
;
762 printf("slirp input:\n");
763 hex_dump(stdout
, buf
, size
);
765 slirp_input(s
->slirp
, buf
, size
);
769 static void net_slirp_cleanup(VLANClientState
*vc
)
771 SlirpState
*s
= vc
->opaque
;
773 slirp_cleanup(s
->slirp
);
774 slirp_smb_cleanup(s
);
775 QTAILQ_REMOVE(&slirp_stacks
, s
, entry
);
779 static int net_slirp_init(VLANState
*vlan
, const char *model
,
780 const char *name
, int restricted
,
781 const char *vnetwork
, const char *vhost
,
782 const char *vhostname
, const char *tftp_export
,
783 const char *bootfile
, const char *vdhcp_start
,
784 const char *vnameserver
, const char *smb_export
,
785 const char *vsmbserver
)
787 /* default settings according to historic slirp */
788 struct in_addr net
= { .s_addr
= htonl(0x0a000200) }; /* 10.0.2.0 */
789 struct in_addr mask
= { .s_addr
= htonl(0xffffff00) }; /* 255.255.255.0 */
790 struct in_addr host
= { .s_addr
= htonl(0x0a000202) }; /* 10.0.2.2 */
791 struct in_addr dhcp
= { .s_addr
= htonl(0x0a00020f) }; /* 10.0.2.15 */
792 struct in_addr dns
= { .s_addr
= htonl(0x0a000203) }; /* 10.0.2.3 */
794 struct in_addr smbsrv
= { .s_addr
= 0 };
801 struct slirp_config_str
*config
;
804 tftp_export
= legacy_tftp_prefix
;
807 bootfile
= legacy_bootp_filename
;
811 if (get_str_sep(buf
, sizeof(buf
), &vnetwork
, '/') < 0) {
812 if (!inet_aton(vnetwork
, &net
)) {
815 addr
= ntohl(net
.s_addr
);
816 if (!(addr
& 0x80000000)) {
817 mask
.s_addr
= htonl(0xff000000); /* class A */
818 } else if ((addr
& 0xfff00000) == 0xac100000) {
819 mask
.s_addr
= htonl(0xfff00000); /* priv. 172.16.0.0/12 */
820 } else if ((addr
& 0xc0000000) == 0x80000000) {
821 mask
.s_addr
= htonl(0xffff0000); /* class B */
822 } else if ((addr
& 0xffff0000) == 0xc0a80000) {
823 mask
.s_addr
= htonl(0xffff0000); /* priv. 192.168.0.0/16 */
824 } else if ((addr
& 0xffff0000) == 0xc6120000) {
825 mask
.s_addr
= htonl(0xfffe0000); /* tests 198.18.0.0/15 */
826 } else if ((addr
& 0xe0000000) == 0xe0000000) {
827 mask
.s_addr
= htonl(0xffffff00); /* class C */
829 mask
.s_addr
= htonl(0xfffffff0); /* multicast/reserved */
832 if (!inet_aton(buf
, &net
)) {
835 shift
= strtol(vnetwork
, &end
, 10);
837 if (!inet_aton(vnetwork
, &mask
)) {
840 } else if (shift
< 4 || shift
> 32) {
843 mask
.s_addr
= htonl(0xffffffff << (32 - shift
));
846 net
.s_addr
&= mask
.s_addr
;
847 host
.s_addr
= net
.s_addr
| (htonl(0x0202) & ~mask
.s_addr
);
848 dhcp
.s_addr
= net
.s_addr
| (htonl(0x020f) & ~mask
.s_addr
);
849 dns
.s_addr
= net
.s_addr
| (htonl(0x0203) & ~mask
.s_addr
);
852 if (vhost
&& !inet_aton(vhost
, &host
)) {
855 if ((host
.s_addr
& mask
.s_addr
) != net
.s_addr
) {
859 if (vdhcp_start
&& !inet_aton(vdhcp_start
, &dhcp
)) {
862 if ((dhcp
.s_addr
& mask
.s_addr
) != net
.s_addr
||
863 dhcp
.s_addr
== host
.s_addr
|| dhcp
.s_addr
== dns
.s_addr
) {
867 if (vnameserver
&& !inet_aton(vnameserver
, &dns
)) {
870 if ((dns
.s_addr
& mask
.s_addr
) != net
.s_addr
||
871 dns
.s_addr
== host
.s_addr
) {
876 if (vsmbserver
&& !inet_aton(vsmbserver
, &smbsrv
)) {
881 s
= qemu_mallocz(sizeof(SlirpState
));
882 s
->slirp
= slirp_init(restricted
, net
, mask
, host
, vhostname
,
883 tftp_export
, bootfile
, dhcp
, dns
, s
);
884 QTAILQ_INSERT_TAIL(&slirp_stacks
, s
, entry
);
886 for (config
= slirp_configs
; config
; config
= config
->next
) {
887 if (config
->flags
& SLIRP_CFG_HOSTFWD
) {
888 if (slirp_hostfwd(s
, config
->str
,
889 config
->flags
& SLIRP_CFG_LEGACY
) < 0)
892 if (slirp_guestfwd(s
, config
->str
,
893 config
->flags
& SLIRP_CFG_LEGACY
) < 0)
899 smb_export
= legacy_smb_export
;
902 if (slirp_smb(s
, smb_export
, smbsrv
) < 0)
907 s
->vc
= qemu_new_vlan_client(vlan
, NULL
, model
, name
, NULL
,
909 net_slirp_cleanup
, s
);
910 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
911 "net=%s, restricted=%c", inet_ntoa(net
), restricted
? 'y' : 'n');
915 static SlirpState
*slirp_lookup(Monitor
*mon
, const char *vlan
,
921 vc
= qemu_find_vlan_client_by_name(mon
, strtol(vlan
, NULL
, 0), stack
);
925 if (strcmp(vc
->model
, "user")) {
926 monitor_printf(mon
, "invalid device specified\n");
931 if (QTAILQ_EMPTY(&slirp_stacks
)) {
932 monitor_printf(mon
, "user mode network stack not in use\n");
935 return QTAILQ_FIRST(&slirp_stacks
);
939 void net_slirp_hostfwd_remove(Monitor
*mon
, const QDict
*qdict
)
941 struct in_addr host_addr
= { .s_addr
= INADDR_ANY
};
944 const char *src_str
, *p
;
948 const char *arg1
= qdict_get_str(qdict
, "arg1");
949 const char *arg2
= qdict_get_try_str(qdict
, "arg2");
950 const char *arg3
= qdict_get_try_str(qdict
, "arg3");
953 s
= slirp_lookup(mon
, arg1
, arg2
);
956 s
= slirp_lookup(mon
, NULL
, NULL
);
963 if (!src_str
|| !src_str
[0])
967 get_str_sep(buf
, sizeof(buf
), &p
, ':');
969 if (!strcmp(buf
, "tcp") || buf
[0] == '\0') {
971 } else if (!strcmp(buf
, "udp")) {
977 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
980 if (buf
[0] != '\0' && !inet_aton(buf
, &host_addr
)) {
986 err
= slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks
)->slirp
, is_udp
,
987 host_addr
, host_port
);
989 monitor_printf(mon
, "host forwarding rule for %s %s\n", src_str
,
990 err
? "removed" : "not found");
994 monitor_printf(mon
, "invalid format\n");
997 static int slirp_hostfwd(SlirpState
*s
, const char *redir_str
,
1000 struct in_addr host_addr
= { .s_addr
= INADDR_ANY
};
1001 struct in_addr guest_addr
= { .s_addr
= 0 };
1002 int host_port
, guest_port
;
1009 if (!p
|| get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1012 if (!strcmp(buf
, "tcp") || buf
[0] == '\0') {
1014 } else if (!strcmp(buf
, "udp")) {
1020 if (!legacy_format
) {
1021 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1024 if (buf
[0] != '\0' && !inet_aton(buf
, &host_addr
)) {
1029 if (get_str_sep(buf
, sizeof(buf
), &p
, legacy_format
? ':' : '-') < 0) {
1032 host_port
= strtol(buf
, &end
, 0);
1033 if (*end
!= '\0' || host_port
< 1 || host_port
> 65535) {
1037 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1040 if (buf
[0] != '\0' && !inet_aton(buf
, &guest_addr
)) {
1044 guest_port
= strtol(p
, &end
, 0);
1045 if (*end
!= '\0' || guest_port
< 1 || guest_port
> 65535) {
1049 if (slirp_add_hostfwd(s
->slirp
, is_udp
, host_addr
, host_port
, guest_addr
,
1051 qemu_error("could not set up host forwarding rule '%s'\n",
1058 qemu_error("invalid host forwarding rule '%s'\n", redir_str
);
1062 void net_slirp_hostfwd_add(Monitor
*mon
, const QDict
*qdict
)
1064 const char *redir_str
;
1066 const char *arg1
= qdict_get_str(qdict
, "arg1");
1067 const char *arg2
= qdict_get_try_str(qdict
, "arg2");
1068 const char *arg3
= qdict_get_try_str(qdict
, "arg3");
1071 s
= slirp_lookup(mon
, arg1
, arg2
);
1074 s
= slirp_lookup(mon
, NULL
, NULL
);
1078 slirp_hostfwd(s
, redir_str
, 0);
1083 int net_slirp_redir(const char *redir_str
)
1085 struct slirp_config_str
*config
;
1087 if (QTAILQ_EMPTY(&slirp_stacks
)) {
1088 config
= qemu_malloc(sizeof(*config
));
1089 pstrcpy(config
->str
, sizeof(config
->str
), redir_str
);
1090 config
->flags
= SLIRP_CFG_HOSTFWD
| SLIRP_CFG_LEGACY
;
1091 config
->next
= slirp_configs
;
1092 slirp_configs
= config
;
1096 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks
), redir_str
, 1);
1101 /* automatic user mode samba server configuration */
1102 static void slirp_smb_cleanup(SlirpState
*s
)
1106 if (s
->smb_dir
[0] != '\0') {
1107 snprintf(cmd
, sizeof(cmd
), "rm -rf %s", s
->smb_dir
);
1109 s
->smb_dir
[0] = '\0';
1113 static int slirp_smb(SlirpState
* s
, const char *exported_dir
,
1114 struct in_addr vserver_addr
)
1116 static int instance
;
1118 char smb_cmdline
[128];
1121 snprintf(s
->smb_dir
, sizeof(s
->smb_dir
), "/tmp/qemu-smb.%ld-%d",
1122 (long)getpid(), instance
++);
1123 if (mkdir(s
->smb_dir
, 0700) < 0) {
1124 qemu_error("could not create samba server dir '%s'\n", s
->smb_dir
);
1127 snprintf(smb_conf
, sizeof(smb_conf
), "%s/%s", s
->smb_dir
, "smb.conf");
1129 f
= fopen(smb_conf
, "w");
1131 slirp_smb_cleanup(s
);
1132 qemu_error("could not create samba server configuration file '%s'\n",
1140 "socket address=127.0.0.1\n"
1141 "pid directory=%s\n"
1142 "lock directory=%s\n"
1143 "log file=%s/log.smbd\n"
1144 "smb passwd file=%s/smbpasswd\n"
1145 "security = share\n"
1159 snprintf(smb_cmdline
, sizeof(smb_cmdline
), "%s -s %s",
1160 SMBD_COMMAND
, smb_conf
);
1162 if (slirp_add_exec(s
->slirp
, 0, smb_cmdline
, &vserver_addr
, 139) < 0) {
1163 slirp_smb_cleanup(s
);
1164 qemu_error("conflicting/invalid smbserver address\n");
1170 /* automatic user mode samba server configuration (legacy interface) */
1171 int net_slirp_smb(const char *exported_dir
)
1173 struct in_addr vserver_addr
= { .s_addr
= 0 };
1175 if (legacy_smb_export
) {
1176 fprintf(stderr
, "-smb given twice\n");
1179 legacy_smb_export
= exported_dir
;
1180 if (!QTAILQ_EMPTY(&slirp_stacks
)) {
1181 return slirp_smb(QTAILQ_FIRST(&slirp_stacks
), exported_dir
,
1187 #endif /* !defined(_WIN32) */
1190 CharDriverState
*hd
;
1191 struct in_addr server
;
1196 static int guestfwd_can_read(void *opaque
)
1198 struct GuestFwd
*fwd
= opaque
;
1199 return slirp_socket_can_recv(fwd
->slirp
, fwd
->server
, fwd
->port
);
1202 static void guestfwd_read(void *opaque
, const uint8_t *buf
, int size
)
1204 struct GuestFwd
*fwd
= opaque
;
1205 slirp_socket_recv(fwd
->slirp
, fwd
->server
, fwd
->port
, buf
, size
);
1208 static int slirp_guestfwd(SlirpState
*s
, const char *config_str
,
1211 struct in_addr server
= { .s_addr
= 0 };
1212 struct GuestFwd
*fwd
;
1219 if (legacy_format
) {
1220 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1224 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1227 if (strcmp(buf
, "tcp") && buf
[0] != '\0') {
1230 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1233 if (buf
[0] != '\0' && !inet_aton(buf
, &server
)) {
1236 if (get_str_sep(buf
, sizeof(buf
), &p
, '-') < 0) {
1240 port
= strtol(buf
, &end
, 10);
1241 if (*end
!= '\0' || port
< 1 || port
> 65535) {
1245 fwd
= qemu_malloc(sizeof(struct GuestFwd
));
1246 snprintf(buf
, sizeof(buf
), "guestfwd.tcp:%d", port
);
1247 fwd
->hd
= qemu_chr_open(buf
, p
, NULL
);
1249 qemu_error("could not open guest forwarding device '%s'\n", buf
);
1254 if (slirp_add_exec(s
->slirp
, 3, fwd
->hd
, &server
, port
) < 0) {
1255 qemu_error("conflicting/invalid host:port in guest forwarding "
1256 "rule '%s'\n", config_str
);
1260 fwd
->server
= server
;
1262 fwd
->slirp
= s
->slirp
;
1264 qemu_chr_add_handlers(fwd
->hd
, guestfwd_can_read
, guestfwd_read
,
1269 qemu_error("invalid guest forwarding rule '%s'\n", config_str
);
1273 void do_info_usernet(Monitor
*mon
)
1277 QTAILQ_FOREACH(s
, &slirp_stacks
, entry
) {
1278 monitor_printf(mon
, "VLAN %d (%s):\n", s
->vc
->vlan
->id
, s
->vc
->name
);
1279 slirp_connection_info(s
->slirp
, mon
);
1283 #endif /* CONFIG_SLIRP */
1287 int tap_has_vnet_hdr(void *opaque
)
1292 void tap_using_vnet_hdr(void *opaque
, int using_vnet_hdr
)
1296 int tap_has_ufo(void *opaque
)
1301 #else /* !defined(_WIN32) */
1303 /* Maximum GSO packet size (64k) plus plenty of room for
1304 * the ethernet and virtio_net headers
1306 #define TAP_BUFSIZE (4096 + 65536)
1309 #include <linux/virtio_net.h>
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;
1322 unsigned int has_ufo
: 1;
1325 static int launch_script(const char *setup_script
, const char *ifname
, int fd
);
1327 static int tap_can_send(void *opaque
);
1328 static void tap_send(void *opaque
);
1329 static void tap_writable(void *opaque
);
1331 static void tap_update_fd_handler(TAPState
*s
)
1333 qemu_set_fd_handler2(s
->fd
,
1334 s
->read_poll
? tap_can_send
: NULL
,
1335 s
->read_poll
? tap_send
: NULL
,
1336 s
->write_poll
? tap_writable
: NULL
,
1340 static void tap_read_poll(TAPState
*s
, int enable
)
1342 s
->read_poll
= !!enable
;
1343 tap_update_fd_handler(s
);
1346 static void tap_write_poll(TAPState
*s
, int enable
)
1348 s
->write_poll
= !!enable
;
1349 tap_update_fd_handler(s
);
1352 static void tap_writable(void *opaque
)
1354 TAPState
*s
= opaque
;
1356 tap_write_poll(s
, 0);
1358 qemu_flush_queued_packets(s
->vc
);
1361 static ssize_t
tap_receive_iov(VLANClientState
*vc
, const struct iovec
*iov
,
1364 TAPState
*s
= vc
->opaque
;
1368 len
= writev(s
->fd
, iov
, iovcnt
);
1369 } while (len
== -1 && errno
== EINTR
);
1371 if (len
== -1 && errno
== EAGAIN
) {
1372 tap_write_poll(s
, 1);
1379 static ssize_t
tap_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1381 struct iovec iov
[2];
1385 TAPState
*s
= vc
->opaque
;
1386 struct virtio_net_hdr hdr
= { 0, };
1388 if (s
->has_vnet_hdr
&& !s
->using_vnet_hdr
) {
1389 iov
[i
].iov_base
= &hdr
;
1390 iov
[i
].iov_len
= sizeof(hdr
);
1395 iov
[i
].iov_base
= (char *) buf
;
1396 iov
[i
].iov_len
= size
;
1399 return tap_receive_iov(vc
, iov
, i
);
1402 static ssize_t
tap_receive_raw(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1404 struct iovec iov
[2];
1408 TAPState
*s
= vc
->opaque
;
1409 struct virtio_net_hdr hdr
= { 0, };
1411 if (s
->has_vnet_hdr
&& s
->using_vnet_hdr
) {
1412 iov
[i
].iov_base
= &hdr
;
1413 iov
[i
].iov_len
= sizeof(hdr
);
1418 iov
[i
].iov_base
= (char *) buf
;
1419 iov
[i
].iov_len
= size
;
1422 return tap_receive_iov(vc
, iov
, i
);
1425 static int tap_can_send(void *opaque
)
1427 TAPState
*s
= opaque
;
1429 return qemu_can_send_packet(s
->vc
);
1433 static ssize_t
tap_read_packet(int tapfd
, uint8_t *buf
, int maxlen
)
1438 sbuf
.maxlen
= maxlen
;
1439 sbuf
.buf
= (char *)buf
;
1441 return getmsg(tapfd
, NULL
, &sbuf
, &f
) >= 0 ? sbuf
.len
: -1;
1444 static ssize_t
tap_read_packet(int tapfd
, uint8_t *buf
, int maxlen
)
1446 return read(tapfd
, buf
, maxlen
);
1450 static void tap_send_completed(VLANClientState
*vc
, ssize_t len
)
1452 TAPState
*s
= vc
->opaque
;
1453 tap_read_poll(s
, 1);
1456 static void tap_send(void *opaque
)
1458 TAPState
*s
= opaque
;
1462 uint8_t *buf
= s
->buf
;
1464 size
= tap_read_packet(s
->fd
, s
->buf
, sizeof(s
->buf
));
1470 if (s
->has_vnet_hdr
&& !s
->using_vnet_hdr
) {
1471 buf
+= sizeof(struct virtio_net_hdr
);
1472 size
-= sizeof(struct virtio_net_hdr
);
1476 size
= qemu_send_packet_async(s
->vc
, buf
, size
, tap_send_completed
);
1478 tap_read_poll(s
, 0);
1484 /* sndbuf should be set to a value lower than the tx queue
1485 * capacity of any destination network interface.
1486 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1487 * a good default, given a 1500 byte MTU.
1489 #define TAP_DEFAULT_SNDBUF 1024*1024
1491 static int tap_set_sndbuf(TAPState
*s
, QemuOpts
*opts
)
1495 sndbuf
= qemu_opt_get_size(opts
, "sndbuf", TAP_DEFAULT_SNDBUF
);
1500 if (ioctl(s
->fd
, TUNSETSNDBUF
, &sndbuf
) == -1 && qemu_opt_get(opts
, "sndbuf")) {
1501 qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno
));
1507 static int tap_set_sndbuf(TAPState
*s
, QemuOpts
*opts
)
1511 #endif /* TUNSETSNDBUF */
1513 int tap_has_vnet_hdr(void *opaque
)
1515 VLANClientState
*vc
= opaque
;
1516 TAPState
*s
= vc
->opaque
;
1518 if (vc
->receive
!= tap_receive
)
1521 return s
? s
->has_vnet_hdr
: 0;
1524 void tap_using_vnet_hdr(void *opaque
, int using_vnet_hdr
)
1526 VLANClientState
*vc
= opaque
;
1527 TAPState
*s
= vc
->opaque
;
1529 if (vc
->receive
!= tap_receive
)
1532 if (!s
|| !s
->has_vnet_hdr
)
1535 s
->using_vnet_hdr
= using_vnet_hdr
!= 0;
1538 static int tap_probe_vnet_hdr(int fd
)
1540 #if defined(TUNGETIFF) && defined(IFF_VNET_HDR)
1543 if (ioctl(fd
, TUNGETIFF
, &ifr
) != 0) {
1544 fprintf(stderr
, "TUNGETIFF ioctl() failed: %s\n", strerror(errno
));
1548 return ifr
.ifr_flags
& IFF_VNET_HDR
;
1554 int tap_has_ufo(void *opaque
)
1556 VLANClientState
*vc
= opaque
;
1557 TAPState
*s
= vc
->opaque
;
1559 return s
? s
->has_ufo
: 0;
1562 #ifdef TUNSETOFFLOAD
1565 #define TUN_F_UFO 0x10
1568 static void tap_set_offload(VLANClientState
*vc
, int csum
, int tso4
, int tso6
,
1571 TAPState
*s
= vc
->opaque
;
1572 unsigned int offload
= 0;
1575 offload
|= TUN_F_CSUM
;
1577 offload
|= TUN_F_TSO4
;
1579 offload
|= TUN_F_TSO6
;
1580 if ((tso4
|| tso6
) && ecn
)
1581 offload
|= TUN_F_TSO_ECN
;
1583 offload
|= TUN_F_UFO
;
1586 if (ioctl(s
->fd
, TUNSETOFFLOAD
, offload
) != 0) {
1587 /* Try without UFO */
1588 offload
&= ~TUN_F_UFO
;
1589 if (ioctl(s
->fd
, TUNSETOFFLOAD
, offload
) != 0) {
1590 fprintf(stderr
, "TUNSETOFFLOAD ioctl() failed: %s\n",
1595 #endif /* TUNSETOFFLOAD */
1597 static void tap_cleanup(VLANClientState
*vc
)
1599 TAPState
*s
= vc
->opaque
;
1601 qemu_purge_queued_packets(vc
);
1603 if (s
->down_script
[0])
1604 launch_script(s
->down_script
, s
->down_script_arg
, s
->fd
);
1606 tap_read_poll(s
, 0);
1607 tap_write_poll(s
, 0);
1614 static TAPState
*net_tap_fd_init(VLANState
*vlan
,
1621 #ifdef TUNSETOFFLOAD
1622 unsigned int offload
;
1625 s
= qemu_mallocz(sizeof(TAPState
));
1627 s
->has_vnet_hdr
= vnet_hdr
!= 0;
1628 s
->vc
= qemu_new_vlan_client(vlan
, NULL
, model
, name
, NULL
,
1629 tap_receive
, tap_receive_iov
,
1631 s
->vc
->receive_raw
= tap_receive_raw
;
1632 #ifdef TUNSETOFFLOAD
1633 s
->vc
->set_offload
= tap_set_offload
;
1636 /* Check if tap supports UFO */
1637 offload
= TUN_F_CSUM
| TUN_F_UFO
;
1638 if (ioctl(s
->fd
, TUNSETOFFLOAD
, offload
) == 0)
1641 tap_set_offload(s
->vc
, 0, 0, 0, 0, 0);
1643 tap_read_poll(s
, 1);
1644 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
), "fd=%d", fd
);
1648 #if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
1649 static int tap_open(char *ifname
, int ifname_size
)
1655 TFR(fd
= open("/dev/tap", O_RDWR
));
1657 fprintf(stderr
, "warning: could not open /dev/tap: no virtual network emulation\n");
1662 dev
= devname(s
.st_rdev
, S_IFCHR
);
1663 pstrcpy(ifname
, ifname_size
, dev
);
1665 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1668 #elif defined(__sun__)
1669 #define TUNNEWPPA (('T'<<16) | 0x0001)
1671 * Allocate TAP device, returns opened fd.
1672 * Stores dev name in the first arg(must be large enough).
1674 static int tap_alloc(char *dev
, size_t dev_size
)
1676 int tap_fd
, if_fd
, ppa
= -1;
1677 static int ip_fd
= 0;
1680 static int arp_fd
= 0;
1681 int ip_muxid
, arp_muxid
;
1682 struct strioctl strioc_if
, strioc_ppa
;
1683 int link_type
= I_PLINK
;;
1685 char actual_name
[32] = "";
1687 memset(&ifr
, 0x0, sizeof(ifr
));
1691 while( *ptr
&& !qemu_isdigit((int)*ptr
) ) ptr
++;
1695 /* Check if IP device was opened */
1699 TFR(ip_fd
= open("/dev/udp", O_RDWR
, 0));
1701 syslog(LOG_ERR
, "Can't open /dev/ip (actually /dev/udp)");
1705 TFR(tap_fd
= open("/dev/tap", O_RDWR
, 0));
1707 syslog(LOG_ERR
, "Can't open /dev/tap");
1711 /* Assign a new PPA and get its unit number. */
1712 strioc_ppa
.ic_cmd
= TUNNEWPPA
;
1713 strioc_ppa
.ic_timout
= 0;
1714 strioc_ppa
.ic_len
= sizeof(ppa
);
1715 strioc_ppa
.ic_dp
= (char *)&ppa
;
1716 if ((ppa
= ioctl (tap_fd
, I_STR
, &strioc_ppa
)) < 0)
1717 syslog (LOG_ERR
, "Can't assign new interface");
1719 TFR(if_fd
= open("/dev/tap", O_RDWR
, 0));
1721 syslog(LOG_ERR
, "Can't open /dev/tap (2)");
1724 if(ioctl(if_fd
, I_PUSH
, "ip") < 0){
1725 syslog(LOG_ERR
, "Can't push IP module");
1729 if (ioctl(if_fd
, SIOCGLIFFLAGS
, &ifr
) < 0)
1730 syslog(LOG_ERR
, "Can't get flags\n");
1732 snprintf (actual_name
, 32, "tap%d", ppa
);
1733 pstrcpy(ifr
.lifr_name
, sizeof(ifr
.lifr_name
), actual_name
);
1736 /* Assign ppa according to the unit number returned by tun device */
1738 if (ioctl (if_fd
, SIOCSLIFNAME
, &ifr
) < 0)
1739 syslog (LOG_ERR
, "Can't set PPA %d", ppa
);
1740 if (ioctl(if_fd
, SIOCGLIFFLAGS
, &ifr
) <0)
1741 syslog (LOG_ERR
, "Can't get flags\n");
1742 /* Push arp module to if_fd */
1743 if (ioctl (if_fd
, I_PUSH
, "arp") < 0)
1744 syslog (LOG_ERR
, "Can't push ARP module (2)");
1746 /* Push arp module to ip_fd */
1747 if (ioctl (ip_fd
, I_POP
, NULL
) < 0)
1748 syslog (LOG_ERR
, "I_POP failed\n");
1749 if (ioctl (ip_fd
, I_PUSH
, "arp") < 0)
1750 syslog (LOG_ERR
, "Can't push ARP module (3)\n");
1752 TFR(arp_fd
= open ("/dev/tap", O_RDWR
, 0));
1754 syslog (LOG_ERR
, "Can't open %s\n", "/dev/tap");
1756 /* Set ifname to arp */
1757 strioc_if
.ic_cmd
= SIOCSLIFNAME
;
1758 strioc_if
.ic_timout
= 0;
1759 strioc_if
.ic_len
= sizeof(ifr
);
1760 strioc_if
.ic_dp
= (char *)&ifr
;
1761 if (ioctl(arp_fd
, I_STR
, &strioc_if
) < 0){
1762 syslog (LOG_ERR
, "Can't set ifname to arp\n");
1765 if((ip_muxid
= ioctl(ip_fd
, I_LINK
, if_fd
)) < 0){
1766 syslog(LOG_ERR
, "Can't link TAP device to IP");
1770 if ((arp_muxid
= ioctl (ip_fd
, link_type
, arp_fd
)) < 0)
1771 syslog (LOG_ERR
, "Can't link TAP device to ARP");
1775 memset(&ifr
, 0x0, sizeof(ifr
));
1776 pstrcpy(ifr
.lifr_name
, sizeof(ifr
.lifr_name
), actual_name
);
1777 ifr
.lifr_ip_muxid
= ip_muxid
;
1778 ifr
.lifr_arp_muxid
= arp_muxid
;
1780 if (ioctl (ip_fd
, SIOCSLIFMUXID
, &ifr
) < 0)
1782 ioctl (ip_fd
, I_PUNLINK
, arp_muxid
);
1783 ioctl (ip_fd
, I_PUNLINK
, ip_muxid
);
1784 syslog (LOG_ERR
, "Can't set multiplexor id");
1787 snprintf(dev
, dev_size
, "tap%d", ppa
);
1791 static int tap_open(char *ifname
, int ifname_size
, int *vnet_hdr
)
1795 if( (fd
= tap_alloc(dev
, sizeof(dev
))) < 0 ){
1796 fprintf(stderr
, "Cannot allocate TAP device\n");
1799 pstrcpy(ifname
, ifname_size
, dev
);
1800 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1803 #elif defined (_AIX)
1804 static int tap_open(char *ifname
, int ifname_size
)
1806 fprintf (stderr
, "no tap on AIX\n");
1810 static int tap_open(char *ifname
, int ifname_size
, int *vnet_hdr
)
1815 TFR(fd
= open("/dev/net/tun", O_RDWR
));
1817 fprintf(stderr
, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1820 memset(&ifr
, 0, sizeof(ifr
));
1821 ifr
.ifr_flags
= IFF_TAP
| IFF_NO_PI
;
1823 #if defined(TUNGETFEATURES) && defined(IFF_VNET_HDR)
1825 unsigned int features
;
1827 if (ioctl(fd
, TUNGETFEATURES
, &features
) == 0 &&
1828 features
& IFF_VNET_HDR
) {
1830 ifr
.ifr_flags
|= IFF_VNET_HDR
;
1835 if (ifname
[0] != '\0')
1836 pstrcpy(ifr
.ifr_name
, IFNAMSIZ
, ifname
);
1838 pstrcpy(ifr
.ifr_name
, IFNAMSIZ
, "tap%d");
1839 ret
= ioctl(fd
, TUNSETIFF
, (void *) &ifr
);
1841 fprintf(stderr
, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1845 pstrcpy(ifname
, ifname_size
, ifr
.ifr_name
);
1846 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1851 static int launch_script(const char *setup_script
, const char *ifname
, int fd
)
1853 sigset_t oldmask
, mask
;
1859 sigaddset(&mask
, SIGCHLD
);
1860 sigprocmask(SIG_BLOCK
, &mask
, &oldmask
);
1862 /* try to launch network script */
1865 int open_max
= sysconf(_SC_OPEN_MAX
), i
;
1867 for (i
= 0; i
< open_max
; i
++) {
1868 if (i
!= STDIN_FILENO
&&
1869 i
!= STDOUT_FILENO
&&
1870 i
!= STDERR_FILENO
&&
1876 *parg
++ = (char *)setup_script
;
1877 *parg
++ = (char *)ifname
;
1879 execv(setup_script
, args
);
1881 } else if (pid
> 0) {
1882 while (waitpid(pid
, &status
, 0) != pid
) {
1885 sigprocmask(SIG_SETMASK
, &oldmask
, NULL
);
1887 if (WIFEXITED(status
) && WEXITSTATUS(status
) == 0) {
1891 fprintf(stderr
, "%s: could not launch network script\n", setup_script
);
1895 static TAPState
*net_tap_init(VLANState
*vlan
, const char *model
,
1896 const char *name
, const char *ifname1
,
1897 const char *setup_script
, const char *down_script
)
1904 if (ifname1
!= NULL
)
1905 pstrcpy(ifname
, sizeof(ifname
), ifname1
);
1909 TFR(fd
= tap_open(ifname
, sizeof(ifname
), &vnet_hdr
));
1913 if (!setup_script
|| !strcmp(setup_script
, "no"))
1915 if (setup_script
[0] != '\0' &&
1916 launch_script(setup_script
, ifname
, fd
)) {
1919 s
= net_tap_fd_init(vlan
, model
, name
, fd
, vnet_hdr
);
1920 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
1921 "ifname=%s,script=%s,downscript=%s",
1922 ifname
, setup_script
, down_script
);
1923 if (down_script
&& strcmp(down_script
, "no")) {
1924 snprintf(s
->down_script
, sizeof(s
->down_script
), "%s", down_script
);
1925 snprintf(s
->down_script_arg
, sizeof(s
->down_script_arg
), "%s", ifname
);
1930 #endif /* !_WIN32 */
1932 #if defined(CONFIG_VDE)
1933 typedef struct VDEState
{
1934 VLANClientState
*vc
;
1938 static void vde_to_qemu(void *opaque
)
1940 VDEState
*s
= opaque
;
1944 size
= vde_recv(s
->vde
, (char *)buf
, sizeof(buf
), 0);
1946 qemu_send_packet(s
->vc
, buf
, size
);
1950 static ssize_t
vde_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1952 VDEState
*s
= vc
->opaque
;
1956 ret
= vde_send(s
->vde
, (const char *)buf
, size
, 0);
1957 } while (ret
< 0 && errno
== EINTR
);
1962 static void vde_cleanup(VLANClientState
*vc
)
1964 VDEState
*s
= vc
->opaque
;
1965 qemu_set_fd_handler(vde_datafd(s
->vde
), NULL
, NULL
, NULL
);
1970 static int net_vde_init(VLANState
*vlan
, const char *model
,
1971 const char *name
, const char *sock
,
1972 int port
, const char *group
, int mode
)
1975 char *init_group
= (char *)group
;
1976 char *init_sock
= (char *)sock
;
1978 struct vde_open_args args
= {
1980 .group
= init_group
,
1984 s
= qemu_mallocz(sizeof(VDEState
));
1985 s
->vde
= vde_open(init_sock
, (char *)"QEMU", &args
);
1990 s
->vc
= qemu_new_vlan_client(vlan
, NULL
, model
, name
, NULL
,
1993 qemu_set_fd_handler(vde_datafd(s
->vde
), vde_to_qemu
, NULL
, s
);
1994 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
), "sock=%s,fd=%d",
1995 sock
, vde_datafd(s
->vde
));
2000 /* network connection */
2001 typedef struct NetSocketState
{
2002 VLANClientState
*vc
;
2004 int state
; /* 0 = getting length, 1 = getting data */
2006 unsigned int packet_len
;
2008 struct sockaddr_in dgram_dst
; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
2011 typedef struct NetSocketListenState
{
2016 } NetSocketListenState
;
2018 /* XXX: we consider we can send the whole packet without blocking */
2019 static ssize_t
net_socket_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
2021 NetSocketState
*s
= vc
->opaque
;
2025 send_all(s
->fd
, (const uint8_t *)&len
, sizeof(len
));
2026 return send_all(s
->fd
, buf
, size
);
2029 static ssize_t
net_socket_receive_dgram(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
2031 NetSocketState
*s
= vc
->opaque
;
2033 return sendto(s
->fd
, (const void *)buf
, size
, 0,
2034 (struct sockaddr
*)&s
->dgram_dst
, sizeof(s
->dgram_dst
));
2037 static void net_socket_send(void *opaque
)
2039 NetSocketState
*s
= opaque
;
2045 size
= recv(s
->fd
, (void *)buf1
, sizeof(buf1
), 0);
2047 err
= socket_error();
2048 if (err
!= EWOULDBLOCK
)
2050 } else if (size
== 0) {
2051 /* end of connection */
2053 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
2059 /* reassemble a packet from the network */
2065 memcpy(s
->buf
+ s
->index
, buf
, l
);
2069 if (s
->index
== 4) {
2071 s
->packet_len
= ntohl(*(uint32_t *)s
->buf
);
2077 l
= s
->packet_len
- s
->index
;
2080 if (s
->index
+ l
<= sizeof(s
->buf
)) {
2081 memcpy(s
->buf
+ s
->index
, buf
, l
);
2083 fprintf(stderr
, "serious error: oversized packet received,"
2084 "connection terminated.\n");
2092 if (s
->index
>= s
->packet_len
) {
2093 qemu_send_packet(s
->vc
, s
->buf
, s
->packet_len
);
2102 static void net_socket_send_dgram(void *opaque
)
2104 NetSocketState
*s
= opaque
;
2107 size
= recv(s
->fd
, (void *)s
->buf
, sizeof(s
->buf
), 0);
2111 /* end of connection */
2112 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
2115 qemu_send_packet(s
->vc
, s
->buf
, size
);
2118 static int net_socket_mcast_create(struct sockaddr_in
*mcastaddr
)
2123 if (!IN_MULTICAST(ntohl(mcastaddr
->sin_addr
.s_addr
))) {
2124 fprintf(stderr
, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
2125 inet_ntoa(mcastaddr
->sin_addr
),
2126 (int)ntohl(mcastaddr
->sin_addr
.s_addr
));
2130 fd
= socket(PF_INET
, SOCK_DGRAM
, 0);
2132 perror("socket(PF_INET, SOCK_DGRAM)");
2137 ret
=setsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
,
2138 (const char *)&val
, sizeof(val
));
2140 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
2144 ret
= bind(fd
, (struct sockaddr
*)mcastaddr
, sizeof(*mcastaddr
));
2150 /* Add host to multicast group */
2151 imr
.imr_multiaddr
= mcastaddr
->sin_addr
;
2152 imr
.imr_interface
.s_addr
= htonl(INADDR_ANY
);
2154 ret
= setsockopt(fd
, IPPROTO_IP
, IP_ADD_MEMBERSHIP
,
2155 (const char *)&imr
, sizeof(struct ip_mreq
));
2157 perror("setsockopt(IP_ADD_MEMBERSHIP)");
2161 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
2163 ret
=setsockopt(fd
, IPPROTO_IP
, IP_MULTICAST_LOOP
,
2164 (const char *)&val
, sizeof(val
));
2166 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
2170 socket_set_nonblock(fd
);
2178 static void net_socket_cleanup(VLANClientState
*vc
)
2180 NetSocketState
*s
= vc
->opaque
;
2181 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
2186 static NetSocketState
*net_socket_fd_init_dgram(VLANState
*vlan
,
2189 int fd
, int is_connected
)
2191 struct sockaddr_in saddr
;
2193 socklen_t saddr_len
;
2196 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
2197 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
2198 * by ONLY ONE process: we must "clone" this dgram socket --jjo
2202 if (getsockname(fd
, (struct sockaddr
*) &saddr
, &saddr_len
) == 0) {
2204 if (saddr
.sin_addr
.s_addr
==0) {
2205 fprintf(stderr
, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
2209 /* clone dgram socket */
2210 newfd
= net_socket_mcast_create(&saddr
);
2212 /* error already reported by net_socket_mcast_create() */
2216 /* clone newfd to fd, close newfd */
2221 fprintf(stderr
, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2222 fd
, strerror(errno
));
2227 s
= qemu_mallocz(sizeof(NetSocketState
));
2230 s
->vc
= qemu_new_vlan_client(vlan
, NULL
, model
, name
, NULL
,
2231 net_socket_receive_dgram
, NULL
,
2232 net_socket_cleanup
, s
);
2233 qemu_set_fd_handler(s
->fd
, net_socket_send_dgram
, NULL
, s
);
2235 /* mcast: save bound address as dst */
2236 if (is_connected
) s
->dgram_dst
=saddr
;
2238 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2239 "socket: fd=%d (%s mcast=%s:%d)",
2240 fd
, is_connected
? "cloned" : "",
2241 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2245 static void net_socket_connect(void *opaque
)
2247 NetSocketState
*s
= opaque
;
2248 qemu_set_fd_handler(s
->fd
, net_socket_send
, NULL
, s
);
2251 static NetSocketState
*net_socket_fd_init_stream(VLANState
*vlan
,
2254 int fd
, int is_connected
)
2257 s
= qemu_mallocz(sizeof(NetSocketState
));
2259 s
->vc
= qemu_new_vlan_client(vlan
, NULL
, model
, name
, NULL
,
2260 net_socket_receive
, NULL
,
2261 net_socket_cleanup
, s
);
2262 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2263 "socket: fd=%d", fd
);
2265 net_socket_connect(s
);
2267 qemu_set_fd_handler(s
->fd
, NULL
, net_socket_connect
, s
);
2272 static NetSocketState
*net_socket_fd_init(VLANState
*vlan
,
2273 const char *model
, const char *name
,
2274 int fd
, int is_connected
)
2276 int so_type
= -1, optlen
=sizeof(so_type
);
2278 if(getsockopt(fd
, SOL_SOCKET
, SO_TYPE
, (char *)&so_type
,
2279 (socklen_t
*)&optlen
)< 0) {
2280 fprintf(stderr
, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd
);
2285 return net_socket_fd_init_dgram(vlan
, model
, name
, fd
, is_connected
);
2287 return net_socket_fd_init_stream(vlan
, model
, name
, fd
, is_connected
);
2289 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2290 fprintf(stderr
, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type
, fd
);
2291 return net_socket_fd_init_stream(vlan
, model
, name
, fd
, is_connected
);
2296 static void net_socket_accept(void *opaque
)
2298 NetSocketListenState
*s
= opaque
;
2300 struct sockaddr_in saddr
;
2305 len
= sizeof(saddr
);
2306 fd
= accept(s
->fd
, (struct sockaddr
*)&saddr
, &len
);
2307 if (fd
< 0 && errno
!= EINTR
) {
2309 } else if (fd
>= 0) {
2313 s1
= net_socket_fd_init(s
->vlan
, s
->model
, s
->name
, fd
, 1);
2317 snprintf(s1
->vc
->info_str
, sizeof(s1
->vc
->info_str
),
2318 "socket: connection from %s:%d",
2319 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2323 static int net_socket_listen_init(VLANState
*vlan
,
2326 const char *host_str
)
2328 NetSocketListenState
*s
;
2330 struct sockaddr_in saddr
;
2332 if (parse_host_port(&saddr
, host_str
) < 0)
2335 s
= qemu_mallocz(sizeof(NetSocketListenState
));
2337 fd
= socket(PF_INET
, SOCK_STREAM
, 0);
2342 socket_set_nonblock(fd
);
2344 /* allow fast reuse */
2346 setsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, (const char *)&val
, sizeof(val
));
2348 ret
= bind(fd
, (struct sockaddr
*)&saddr
, sizeof(saddr
));
2353 ret
= listen(fd
, 0);
2359 s
->model
= qemu_strdup(model
);
2360 s
->name
= name
? qemu_strdup(name
) : NULL
;
2362 qemu_set_fd_handler(fd
, net_socket_accept
, NULL
, s
);
2366 static int net_socket_connect_init(VLANState
*vlan
,
2369 const char *host_str
)
2372 int fd
, connected
, ret
, err
;
2373 struct sockaddr_in saddr
;
2375 if (parse_host_port(&saddr
, host_str
) < 0)
2378 fd
= socket(PF_INET
, SOCK_STREAM
, 0);
2383 socket_set_nonblock(fd
);
2387 ret
= connect(fd
, (struct sockaddr
*)&saddr
, sizeof(saddr
));
2389 err
= socket_error();
2390 if (err
== EINTR
|| err
== EWOULDBLOCK
) {
2391 } else if (err
== EINPROGRESS
) {
2394 } else if (err
== WSAEALREADY
) {
2407 s
= net_socket_fd_init(vlan
, model
, name
, fd
, connected
);
2410 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2411 "socket: connect to %s:%d",
2412 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2416 static int net_socket_mcast_init(VLANState
*vlan
,
2419 const char *host_str
)
2423 struct sockaddr_in saddr
;
2425 if (parse_host_port(&saddr
, host_str
) < 0)
2429 fd
= net_socket_mcast_create(&saddr
);
2433 s
= net_socket_fd_init(vlan
, model
, name
, fd
, 0);
2437 s
->dgram_dst
= saddr
;
2439 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2440 "socket: mcast=%s:%d",
2441 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2446 typedef struct DumpState
{
2447 VLANClientState
*pcap_vc
;
2452 #define PCAP_MAGIC 0xa1b2c3d4
2454 struct pcap_file_hdr
{
2456 uint16_t version_major
;
2457 uint16_t version_minor
;
2464 struct pcap_sf_pkthdr
{
2473 static ssize_t
dump_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
2475 DumpState
*s
= vc
->opaque
;
2476 struct pcap_sf_pkthdr hdr
;
2480 /* Early return in case of previous error. */
2485 ts
= muldiv64(qemu_get_clock(vm_clock
), 1000000, get_ticks_per_sec());
2486 caplen
= size
> s
->pcap_caplen
? s
->pcap_caplen
: size
;
2488 hdr
.ts
.tv_sec
= ts
/ 1000000;
2489 hdr
.ts
.tv_usec
= ts
% 1000000;
2490 hdr
.caplen
= caplen
;
2492 if (write(s
->fd
, &hdr
, sizeof(hdr
)) != sizeof(hdr
) ||
2493 write(s
->fd
, buf
, caplen
) != caplen
) {
2494 qemu_log("-net dump write error - stop dump\n");
2502 static void net_dump_cleanup(VLANClientState
*vc
)
2504 DumpState
*s
= vc
->opaque
;
2510 static int net_dump_init(VLANState
*vlan
, const char *device
,
2511 const char *name
, const char *filename
, int len
)
2513 struct pcap_file_hdr hdr
;
2516 s
= qemu_malloc(sizeof(DumpState
));
2518 s
->fd
= open(filename
, O_CREAT
| O_WRONLY
| O_BINARY
, 0644);
2520 qemu_error("-net dump: can't open %s\n", filename
);
2524 s
->pcap_caplen
= len
;
2526 hdr
.magic
= PCAP_MAGIC
;
2527 hdr
.version_major
= 2;
2528 hdr
.version_minor
= 4;
2531 hdr
.snaplen
= s
->pcap_caplen
;
2534 if (write(s
->fd
, &hdr
, sizeof(hdr
)) < sizeof(hdr
)) {
2535 qemu_error("-net dump write error: %s\n", strerror(errno
));
2541 s
->pcap_vc
= qemu_new_vlan_client(vlan
, NULL
, device
, name
, NULL
,
2543 net_dump_cleanup
, s
);
2544 snprintf(s
->pcap_vc
->info_str
, sizeof(s
->pcap_vc
->info_str
),
2545 "dump to %s (len=%d)", filename
, len
);
2549 /* find or alloc a new VLAN */
2550 VLANState
*qemu_find_vlan(int id
, int allocate
)
2554 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
2555 if (vlan
->id
== id
) {
2564 vlan
= qemu_mallocz(sizeof(VLANState
));
2566 QTAILQ_INIT(&vlan
->clients
);
2568 vlan
->send_queue
= qemu_new_net_queue(qemu_vlan_deliver_packet
,
2569 qemu_vlan_deliver_packet_iov
,
2572 QTAILQ_INSERT_TAIL(&vlans
, vlan
, next
);
2577 VLANClientState
*qemu_find_netdev(const char *id
)
2579 VLANClientState
*vc
;
2581 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
2582 if (!strcmp(vc
->name
, id
)) {
2590 static int nic_get_free_idx(void)
2594 for (index
= 0; index
< MAX_NICS
; index
++)
2595 if (!nd_table
[index
].used
)
2600 int qemu_show_nic_models(const char *arg
, const char *const *models
)
2604 if (!arg
|| strcmp(arg
, "?"))
2607 fprintf(stderr
, "qemu: Supported NIC models: ");
2608 for (i
= 0 ; models
[i
]; i
++)
2609 fprintf(stderr
, "%s%c", models
[i
], models
[i
+1] ? ',' : '\n');
2613 void qemu_check_nic_model(NICInfo
*nd
, const char *model
)
2615 const char *models
[2];
2620 if (qemu_show_nic_models(nd
->model
, models
))
2622 if (qemu_find_nic_model(nd
, models
, model
) < 0)
2626 int qemu_find_nic_model(NICInfo
*nd
, const char * const *models
,
2627 const char *default_model
)
2632 nd
->model
= qemu_strdup(default_model
);
2634 for (i
= 0 ; models
[i
]; i
++) {
2635 if (strcmp(nd
->model
, models
[i
]) == 0)
2639 qemu_error("qemu: Unsupported NIC model: %s\n", nd
->model
);
2643 static int net_handle_fd_param(Monitor
*mon
, const char *param
)
2645 if (!qemu_isdigit(param
[0])) {
2648 fd
= monitor_get_fd(mon
, param
);
2650 qemu_error("No file descriptor named %s found", param
);
2656 return strtol(param
, NULL
, 0);
2660 static int net_init_nic(QemuOpts
*opts
,
2669 idx
= nic_get_free_idx();
2670 if (idx
== -1 || nb_nics
>= MAX_NICS
) {
2671 qemu_error("Too Many NICs\n");
2675 nd
= &nd_table
[idx
];
2677 memset(nd
, 0, sizeof(*nd
));
2679 if ((netdev
= qemu_opt_get(opts
, "netdev"))) {
2680 nd
->netdev
= qemu_find_netdev(netdev
);
2682 qemu_error("netdev '%s' not found\n", netdev
);
2690 nd
->name
= qemu_strdup(name
);
2692 if (qemu_opt_get(opts
, "model")) {
2693 nd
->model
= qemu_strdup(qemu_opt_get(opts
, "model"));
2695 if (qemu_opt_get(opts
, "addr")) {
2696 nd
->devaddr
= qemu_strdup(qemu_opt_get(opts
, "addr"));
2699 nd
->macaddr
[0] = 0x52;
2700 nd
->macaddr
[1] = 0x54;
2701 nd
->macaddr
[2] = 0x00;
2702 nd
->macaddr
[3] = 0x12;
2703 nd
->macaddr
[4] = 0x34;
2704 nd
->macaddr
[5] = 0x56 + idx
;
2706 if (qemu_opt_get(opts
, "macaddr") &&
2707 parse_macaddr(nd
->macaddr
, qemu_opt_get(opts
, "macaddr")) < 0) {
2708 qemu_error("invalid syntax for ethernet address\n");
2712 nd
->nvectors
= qemu_opt_get_number(opts
, "vectors", NIC_NVECTORS_UNSPECIFIED
);
2713 if (nd
->nvectors
!= NIC_NVECTORS_UNSPECIFIED
&&
2714 (nd
->nvectors
< 0 || nd
->nvectors
> 0x7ffffff)) {
2715 qemu_error("invalid # of vectors: %d\n", nd
->nvectors
);
2721 nd
->vlan
->nb_guest_devs
++;
2728 #if defined(CONFIG_SLIRP)
2729 static int net_init_slirp_configs(const char *name
, const char *value
, void *opaque
)
2731 struct slirp_config_str
*config
;
2733 if (strcmp(name
, "hostfwd") != 0 && strcmp(name
, "guestfwd") != 0) {
2737 config
= qemu_mallocz(sizeof(*config
));
2739 pstrcpy(config
->str
, sizeof(config
->str
), value
);
2741 if (!strcmp(name
, "hostfwd")) {
2742 config
->flags
= SLIRP_CFG_HOSTFWD
;
2745 config
->next
= slirp_configs
;
2746 slirp_configs
= config
;
2751 static int net_init_slirp(QemuOpts
*opts
,
2756 struct slirp_config_str
*config
;
2758 const char *vhostname
;
2759 const char *vdhcp_start
;
2760 const char *vnamesrv
;
2761 const char *tftp_export
;
2762 const char *bootfile
;
2763 const char *smb_export
;
2764 const char *vsmbsrv
;
2769 vhost
= qemu_opt_get(opts
, "host");
2770 vhostname
= qemu_opt_get(opts
, "hostname");
2771 vdhcp_start
= qemu_opt_get(opts
, "dhcpstart");
2772 vnamesrv
= qemu_opt_get(opts
, "dns");
2773 tftp_export
= qemu_opt_get(opts
, "tftp");
2774 bootfile
= qemu_opt_get(opts
, "bootfile");
2775 smb_export
= qemu_opt_get(opts
, "smb");
2776 vsmbsrv
= qemu_opt_get(opts
, "smbserver");
2778 if (qemu_opt_get(opts
, "ip")) {
2779 const char *ip
= qemu_opt_get(opts
, "ip");
2780 int l
= strlen(ip
) + strlen("/24") + 1;
2782 vnet
= qemu_malloc(l
);
2784 /* emulate legacy ip= parameter */
2785 pstrcpy(vnet
, l
, ip
);
2786 pstrcat(vnet
, l
, "/24");
2789 if (qemu_opt_get(opts
, "net")) {
2793 vnet
= qemu_strdup(qemu_opt_get(opts
, "net"));
2796 if (qemu_opt_get(opts
, "restrict") &&
2797 qemu_opt_get(opts
, "restrict")[0] == 'y') {
2801 qemu_opt_foreach(opts
, net_init_slirp_configs
, NULL
, 0);
2803 ret
= net_slirp_init(vlan
, "user", name
, restricted
, vnet
, vhost
,
2804 vhostname
, tftp_export
, bootfile
, vdhcp_start
,
2805 vnamesrv
, smb_export
, vsmbsrv
);
2807 while (slirp_configs
) {
2808 config
= slirp_configs
;
2809 slirp_configs
= config
->next
;
2813 if (ret
!= -1 && vlan
) {
2814 vlan
->nb_host_devs
++;
2821 #endif /* CONFIG_SLIRP */
2824 static int net_init_tap_win32(QemuOpts
*opts
,
2831 ifname
= qemu_opt_get(opts
, "ifname");
2834 qemu_error("tap: no interface name\n");
2838 if (tap_win32_init(vlan
, "tap", name
, ifname
) == -1) {
2843 vlan
->nb_host_devs
++;
2848 #elif !defined(_AIX)
2849 static int net_init_tap(QemuOpts
*opts
,
2856 if (qemu_opt_get(opts
, "fd")) {
2859 if (qemu_opt_get(opts
, "ifname") ||
2860 qemu_opt_get(opts
, "script") ||
2861 qemu_opt_get(opts
, "downscript")) {
2862 qemu_error("ifname=, script= and downscript= is invalid with fd=\n");
2866 fd
= net_handle_fd_param(mon
, qemu_opt_get(opts
, "fd"));
2871 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
2873 s
= net_tap_fd_init(vlan
, "tap", name
, fd
, tap_probe_vnet_hdr(fd
));
2878 const char *ifname
, *script
, *downscript
;
2880 ifname
= qemu_opt_get(opts
, "ifname");
2881 script
= qemu_opt_get(opts
, "script");
2882 downscript
= qemu_opt_get(opts
, "downscript");
2885 script
= DEFAULT_NETWORK_SCRIPT
;
2888 downscript
= DEFAULT_NETWORK_DOWN_SCRIPT
;
2891 s
= net_tap_init(vlan
, "tap", name
, ifname
, script
, downscript
);
2898 if (tap_set_sndbuf(s
, opts
) < 0) {
2903 vlan
->nb_host_devs
++;
2910 static int net_init_socket(QemuOpts
*opts
,
2915 if (qemu_opt_get(opts
, "fd")) {
2918 if (qemu_opt_get(opts
, "listen") ||
2919 qemu_opt_get(opts
, "connect") ||
2920 qemu_opt_get(opts
, "mcast")) {
2921 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2925 fd
= net_handle_fd_param(mon
, qemu_opt_get(opts
, "fd"));
2930 if (!net_socket_fd_init(vlan
, "socket", name
, fd
, 1)) {
2934 } else if (qemu_opt_get(opts
, "listen")) {
2937 if (qemu_opt_get(opts
, "fd") ||
2938 qemu_opt_get(opts
, "connect") ||
2939 qemu_opt_get(opts
, "mcast")) {
2940 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2944 listen
= qemu_opt_get(opts
, "listen");
2946 if (net_socket_listen_init(vlan
, "socket", name
, listen
) == -1) {
2949 } else if (qemu_opt_get(opts
, "connect")) {
2950 const char *connect
;
2952 if (qemu_opt_get(opts
, "fd") ||
2953 qemu_opt_get(opts
, "listen") ||
2954 qemu_opt_get(opts
, "mcast")) {
2955 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2959 connect
= qemu_opt_get(opts
, "connect");
2961 if (net_socket_connect_init(vlan
, "socket", name
, connect
) == -1) {
2964 } else if (qemu_opt_get(opts
, "mcast")) {
2967 if (qemu_opt_get(opts
, "fd") ||
2968 qemu_opt_get(opts
, "connect") ||
2969 qemu_opt_get(opts
, "listen")) {
2970 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
2974 mcast
= qemu_opt_get(opts
, "mcast");
2976 if (net_socket_mcast_init(vlan
, "socket", name
, mcast
) == -1) {
2980 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
2985 vlan
->nb_host_devs
++;
2992 static int net_init_vde(QemuOpts
*opts
,
3001 sock
= qemu_opt_get(opts
, "sock");
3002 group
= qemu_opt_get(opts
, "group");
3004 port
= qemu_opt_get_number(opts
, "port", 0);
3005 mode
= qemu_opt_get_number(opts
, "mode", 0700);
3007 if (net_vde_init(vlan
, "vde", name
, sock
, port
, group
, mode
) == -1) {
3012 vlan
->nb_host_devs
++;
3019 static int net_init_dump(QemuOpts
*opts
,
3030 file
= qemu_opt_get(opts
, "file");
3032 snprintf(def_file
, sizeof(def_file
), "qemu-vlan%d.pcap", vlan
->id
);
3036 len
= qemu_opt_get_size(opts
, "len", 65536);
3038 return net_dump_init(vlan
, "dump", name
, file
, len
);
3041 #define NET_COMMON_PARAMS_DESC \
3044 .type = QEMU_OPT_STRING, \
3045 .help = "net client type (nic, tap etc.)", \
3048 .type = QEMU_OPT_NUMBER, \
3049 .help = "vlan number", \
3052 .type = QEMU_OPT_STRING, \
3053 .help = "identifier for monitor commands", \
3056 typedef int (*net_client_init_func
)(QemuOpts
*opts
,
3061 /* magic number, but compiler will warn if too small */
3062 #define NET_MAX_DESC 20
3066 net_client_init_func init
;
3067 QemuOptDesc desc
[NET_MAX_DESC
];
3068 } net_client_types
[] = {
3072 NET_COMMON_PARAMS_DESC
,
3073 { /* end of list */ }
3077 .init
= net_init_nic
,
3079 NET_COMMON_PARAMS_DESC
,
3082 .type
= QEMU_OPT_STRING
,
3083 .help
= "id of -netdev to connect to",
3087 .type
= QEMU_OPT_STRING
,
3088 .help
= "MAC address",
3091 .type
= QEMU_OPT_STRING
,
3092 .help
= "device model (e1000, rtl8139, virtio etc.)",
3095 .type
= QEMU_OPT_STRING
,
3096 .help
= "PCI device address",
3099 .type
= QEMU_OPT_NUMBER
,
3100 .help
= "number of MSI-x vectors, 0 to disable MSI-X",
3102 { /* end of list */ }
3107 .init
= net_init_slirp
,
3109 NET_COMMON_PARAMS_DESC
,
3112 .type
= QEMU_OPT_STRING
,
3113 .help
= "client hostname reported by the builtin DHCP server",
3116 .type
= QEMU_OPT_STRING
,
3117 .help
= "isolate the guest from the host (y|yes|n|no)",
3120 .type
= QEMU_OPT_STRING
,
3121 .help
= "legacy parameter, use net= instead",
3124 .type
= QEMU_OPT_STRING
,
3125 .help
= "IP address and optional netmask",
3128 .type
= QEMU_OPT_STRING
,
3129 .help
= "guest-visible address of the host",
3132 .type
= QEMU_OPT_STRING
,
3133 .help
= "root directory of the built-in TFTP server",
3136 .type
= QEMU_OPT_STRING
,
3137 .help
= "BOOTP filename, for use with tftp=",
3139 .name
= "dhcpstart",
3140 .type
= QEMU_OPT_STRING
,
3141 .help
= "the first of the 16 IPs the built-in DHCP server can assign",
3144 .type
= QEMU_OPT_STRING
,
3145 .help
= "guest-visible address of the virtual nameserver",
3148 .type
= QEMU_OPT_STRING
,
3149 .help
= "root directory of the built-in SMB server",
3151 .name
= "smbserver",
3152 .type
= QEMU_OPT_STRING
,
3153 .help
= "IP address of the built-in SMB server",
3156 .type
= QEMU_OPT_STRING
,
3157 .help
= "guest port number to forward incoming TCP or UDP connections",
3160 .type
= QEMU_OPT_STRING
,
3161 .help
= "IP address and port to forward guest TCP connections",
3163 { /* end of list */ }
3169 .init
= net_init_tap_win32
,
3171 NET_COMMON_PARAMS_DESC
,
3174 .type
= QEMU_OPT_STRING
,
3175 .help
= "interface name",
3177 { /* end of list */ }
3179 #elif !defined(_AIX)
3182 .init
= net_init_tap
,
3184 NET_COMMON_PARAMS_DESC
,
3187 .type
= QEMU_OPT_STRING
,
3188 .help
= "file descriptor of an already opened tap",
3191 .type
= QEMU_OPT_STRING
,
3192 .help
= "interface name",
3195 .type
= QEMU_OPT_STRING
,
3196 .help
= "script to initialize the interface",
3198 .name
= "downscript",
3199 .type
= QEMU_OPT_STRING
,
3200 .help
= "script to shut down the interface",
3204 .type
= QEMU_OPT_SIZE
,
3205 .help
= "send buffer limit"
3208 { /* end of list */ }
3213 .init
= net_init_socket
,
3215 NET_COMMON_PARAMS_DESC
,
3218 .type
= QEMU_OPT_STRING
,
3219 .help
= "file descriptor of an already opened socket",
3222 .type
= QEMU_OPT_STRING
,
3223 .help
= "port number, and optional hostname, to listen on",
3226 .type
= QEMU_OPT_STRING
,
3227 .help
= "port number, and optional hostname, to connect to",
3230 .type
= QEMU_OPT_STRING
,
3231 .help
= "UDP multicast address and port number",
3233 { /* end of list */ }
3238 .init
= net_init_vde
,
3240 NET_COMMON_PARAMS_DESC
,
3243 .type
= QEMU_OPT_STRING
,
3244 .help
= "socket path",
3247 .type
= QEMU_OPT_NUMBER
,
3248 .help
= "port number",
3251 .type
= QEMU_OPT_STRING
,
3252 .help
= "group owner of socket",
3255 .type
= QEMU_OPT_NUMBER
,
3256 .help
= "permissions for socket",
3258 { /* end of list */ }
3263 .init
= net_init_dump
,
3265 NET_COMMON_PARAMS_DESC
,
3268 .type
= QEMU_OPT_SIZE
,
3269 .help
= "per-packet size limit (64k default)",
3272 .type
= QEMU_OPT_STRING
,
3273 .help
= "dump file path (default is qemu-vlan0.pcap)",
3275 { /* end of list */ }
3278 { /* end of list */ }
3281 int net_client_init(Monitor
*mon
, QemuOpts
*opts
, int is_netdev
)
3287 type
= qemu_opt_get(opts
, "type");
3289 qemu_error("No type specified for -net\n");
3294 if (strcmp(type
, "tap") != 0 &&
3296 strcmp(type
, "user") != 0 &&
3299 strcmp(type
, "vde") != 0 &&
3301 strcmp(type
, "socket") != 0) {
3302 qemu_error("The '%s' network backend type is not valid with -netdev\n",
3307 if (qemu_opt_get(opts
, "vlan")) {
3308 qemu_error("The 'vlan' parameter is not valid with -netdev\n");
3311 if (qemu_opt_get(opts
, "name")) {
3312 qemu_error("The 'name' parameter is not valid with -netdev\n");
3315 if (!qemu_opts_id(opts
)) {
3316 qemu_error("The id= parameter is required with -netdev\n");
3321 name
= qemu_opts_id(opts
);
3323 name
= qemu_opt_get(opts
, "name");
3326 for (i
= 0; net_client_types
[i
].type
!= NULL
; i
++) {
3327 if (!strcmp(net_client_types
[i
].type
, type
)) {
3328 VLANState
*vlan
= NULL
;
3330 if (qemu_opts_validate(opts
, &net_client_types
[i
].desc
[0]) == -1) {
3334 /* Do not add to a vlan if it's a -netdev or a nic with a
3335 * netdev= parameter. */
3337 (strcmp(type
, "nic") == 0 && qemu_opt_get(opts
, "netdev")))) {
3338 vlan
= qemu_find_vlan(qemu_opt_get_number(opts
, "vlan", 0), 1);
3341 if (net_client_types
[i
].init
) {
3342 return net_client_types
[i
].init(opts
, mon
, name
, vlan
);
3349 qemu_error("Invalid -net type '%s'\n", type
);
3353 void net_client_uninit(NICInfo
*nd
)
3356 nd
->vlan
->nb_guest_devs
--;
3360 qemu_free(nd
->model
);
3361 qemu_free(nd
->name
);
3362 qemu_free(nd
->devaddr
);
3367 static int net_host_check_device(const char *device
)
3370 const char *valid_param_list
[] = { "tap", "socket", "dump"
3378 for (i
= 0; i
< sizeof(valid_param_list
) / sizeof(char *); i
++) {
3379 if (!strncmp(valid_param_list
[i
], device
,
3380 strlen(valid_param_list
[i
])))
3387 void net_host_device_add(Monitor
*mon
, const QDict
*qdict
)
3389 const char *device
= qdict_get_str(qdict
, "device");
3390 const char *opts_str
= qdict_get_try_str(qdict
, "opts");
3393 if (!net_host_check_device(device
)) {
3394 monitor_printf(mon
, "invalid host network device %s\n", device
);
3398 opts
= qemu_opts_parse(&qemu_net_opts
, opts_str
? opts_str
: "", NULL
);
3400 monitor_printf(mon
, "parsing network options '%s' failed\n",
3401 opts_str
? opts_str
: "");
3405 qemu_opt_set(opts
, "type", device
);
3407 if (net_client_init(mon
, opts
, 0) < 0) {
3408 monitor_printf(mon
, "adding host network device %s failed\n", device
);
3412 void net_host_device_remove(Monitor
*mon
, const QDict
*qdict
)
3414 VLANClientState
*vc
;
3415 int vlan_id
= qdict_get_int(qdict
, "vlan_id");
3416 const char *device
= qdict_get_str(qdict
, "device");
3418 vc
= qemu_find_vlan_client_by_name(mon
, vlan_id
, device
);
3422 if (!net_host_check_device(vc
->model
)) {
3423 monitor_printf(mon
, "invalid host network device %s\n", device
);
3426 qemu_del_vlan_client(vc
);
3429 void net_set_boot_mask(int net_boot_mask
)
3433 /* Only the first four NICs may be bootable */
3434 net_boot_mask
= net_boot_mask
& 0xF;
3436 for (i
= 0; i
< nb_nics
; i
++) {
3437 if (net_boot_mask
& (1 << i
)) {
3438 nd_table
[i
].bootable
= 1;
3439 net_boot_mask
&= ~(1 << i
);
3443 if (net_boot_mask
) {
3444 fprintf(stderr
, "Cannot boot from non-existent NIC\n");
3449 void do_info_network(Monitor
*mon
)
3453 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3454 VLANClientState
*vc
;
3456 monitor_printf(mon
, "VLAN %d devices:\n", vlan
->id
);
3458 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
3459 monitor_printf(mon
, " %s: %s\n", vc
->name
, vc
->info_str
);
3464 void do_set_link(Monitor
*mon
, const QDict
*qdict
)
3467 VLANClientState
*vc
= NULL
;
3468 const char *name
= qdict_get_str(qdict
, "name");
3469 const char *up_or_down
= qdict_get_str(qdict
, "up_or_down");
3471 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3472 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
3473 if (strcmp(vc
->name
, name
) == 0) {
3481 monitor_printf(mon
, "could not find network device '%s'\n", name
);
3485 if (strcmp(up_or_down
, "up") == 0)
3487 else if (strcmp(up_or_down
, "down") == 0)
3490 monitor_printf(mon
, "invalid link status '%s'; only 'up' or 'down' "
3491 "valid\n", up_or_down
);
3493 if (vc
->link_status_changed
)
3494 vc
->link_status_changed(vc
);
3497 void net_cleanup(void)
3500 VLANClientState
*vc
, *next_vc
;
3502 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3503 QTAILQ_FOREACH_SAFE(vc
, &vlan
->clients
, next
, next_vc
) {
3504 qemu_del_vlan_client(vc
);
3508 QTAILQ_FOREACH_SAFE(vc
, &non_vlan_clients
, next
, next_vc
) {
3509 qemu_del_vlan_client(vc
);
3513 static void net_check_clients(void)
3517 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3518 if (vlan
->nb_guest_devs
== 0 && vlan
->nb_host_devs
== 0)
3520 if (vlan
->nb_guest_devs
== 0)
3521 fprintf(stderr
, "Warning: vlan %d with no nics\n", vlan
->id
);
3522 if (vlan
->nb_host_devs
== 0)
3524 "Warning: vlan %d is not connected to host network\n",
3529 static int net_init_client(QemuOpts
*opts
, void *dummy
)
3531 if (net_client_init(NULL
, opts
, 0) < 0)
3536 static int net_init_netdev(QemuOpts
*opts
, void *dummy
)
3538 return net_client_init(NULL
, opts
, 1);
3541 int net_init_clients(void)
3543 if (QTAILQ_EMPTY(&qemu_net_opts
.head
)) {
3544 /* if no clients, we use a default config */
3545 qemu_opts_set(&qemu_net_opts
, NULL
, "type", "nic");
3547 qemu_opts_set(&qemu_net_opts
, NULL
, "type", "user");
3551 QTAILQ_INIT(&vlans
);
3552 QTAILQ_INIT(&non_vlan_clients
);
3554 if (qemu_opts_foreach(&qemu_netdev_opts
, net_init_netdev
, NULL
, 1) == -1)
3557 if (qemu_opts_foreach(&qemu_net_opts
, net_init_client
, NULL
, 1) == -1) {
3561 net_check_clients();
3566 int net_client_parse(QemuOptsList
*opts_list
, const char *optarg
)
3568 #if defined(CONFIG_SLIRP)
3569 /* handle legacy -net channel,port:chr */
3570 if (!strcmp(opts_list
->name
, "net") &&
3571 !strncmp(optarg
, "channel,", strlen("channel,"))) {
3574 optarg
+= strlen("channel,");
3576 if (QTAILQ_EMPTY(&slirp_stacks
)) {
3577 struct slirp_config_str
*config
;
3579 config
= qemu_malloc(sizeof(*config
));
3580 pstrcpy(config
->str
, sizeof(config
->str
), optarg
);
3581 config
->flags
= SLIRP_CFG_LEGACY
;
3582 config
->next
= slirp_configs
;
3583 slirp_configs
= config
;
3586 ret
= slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks
), optarg
, 1);
3592 if (!qemu_opts_parse(opts_list
, optarg
, "type")) {