4 * Copyright (c) 2003-2008 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
32 /* Needed early for CONFIG_BSD etc. */
33 #include "config-host.h"
36 #include <sys/times.h>
40 #include <sys/ioctl.h>
41 #include <sys/resource.h>
42 #include <sys/socket.h>
43 #include <netinet/in.h>
46 #include <net/if_tap.h>
49 #include "tap-linux.h"
51 #include <arpa/inet.h>
54 #include <sys/select.h>
57 #if defined(__FreeBSD__) || defined(__DragonFly__)
62 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
63 #include <freebsd/stdlib.h>
68 #include <linux/rtc.h>
70 /* For the benefit of older linux systems which don't supply it,
71 we use a local copy of hpet.h. */
72 /* #include <linux/hpet.h> */
75 #include <linux/ppdev.h>
76 #include <linux/parport.h>
80 #include <sys/ethernet.h>
81 #include <sys/sockio.h>
82 #include <netinet/arp.h>
83 #include <netinet/in.h>
84 #include <netinet/in_systm.h>
85 #include <netinet/ip.h>
86 #include <netinet/ip_icmp.h> // must come after ip.h
87 #include <netinet/udp.h>
88 #include <netinet/tcp.h>
96 #if defined(__OpenBSD__)
100 #if defined(CONFIG_VDE)
101 #include <libvdeplug.h>
104 #include "qemu-common.h"
108 #include "qemu-timer.h"
109 #include "qemu-char.h"
110 #include "audio/audio.h"
111 #include "qemu_socket.h"
112 #include "qemu-log.h"
113 #include "qemu-config.h"
115 #include "slirp/libslirp.h"
117 static QTAILQ_HEAD(, VLANState
) vlans
;
118 static QTAILQ_HEAD(, VLANClientState
) non_vlan_clients
;
120 /***********************************************************/
121 /* network device redirectors */
123 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
124 static void hex_dump(FILE *f
, const uint8_t *buf
, int size
)
128 for(i
=0;i
<size
;i
+=16) {
132 fprintf(f
, "%08x ", i
);
135 fprintf(f
, " %02x", buf
[i
+j
]);
142 if (c
< ' ' || c
> '~')
151 static int parse_macaddr(uint8_t *macaddr
, const char *p
)
158 offset
= strtol(p
, &last_char
, 0);
159 if (0 == errno
&& '\0' == *last_char
&&
160 offset
>= 0 && offset
<= 0xFFFFFF) {
161 macaddr
[3] = (offset
& 0xFF0000) >> 16;
162 macaddr
[4] = (offset
& 0xFF00) >> 8;
163 macaddr
[5] = offset
& 0xFF;
166 for(i
= 0; i
< 6; i
++) {
167 macaddr
[i
] = strtol(p
, (char **)&p
, 16);
172 if (*p
!= ':' && *p
!= '-')
183 static int get_str_sep(char *buf
, int buf_size
, const char **pp
, int sep
)
194 if (len
> buf_size
- 1)
203 int parse_host_src_port(struct sockaddr_in
*haddr
,
204 struct sockaddr_in
*saddr
,
205 const char *input_str
)
207 char *str
= strdup(input_str
);
208 char *host_str
= str
;
210 const char *src_str2
;
214 * Chop off any extra arguments at the end of the string which
215 * would start with a comma, then fill in the src port information
216 * if it was provided else use the "any address" and "any port".
218 if ((ptr
= strchr(str
,',')))
221 if ((src_str
= strchr(input_str
,'@'))) {
226 if (parse_host_port(haddr
, host_str
) < 0)
230 if (!src_str
|| *src_str
== '\0')
233 if (parse_host_port(saddr
, src_str2
) < 0)
244 int parse_host_port(struct sockaddr_in
*saddr
, const char *str
)
252 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
254 saddr
->sin_family
= AF_INET
;
255 if (buf
[0] == '\0') {
256 saddr
->sin_addr
.s_addr
= 0;
258 if (qemu_isdigit(buf
[0])) {
259 if (!inet_aton(buf
, &saddr
->sin_addr
))
262 if ((he
= gethostbyname(buf
)) == NULL
)
264 saddr
->sin_addr
= *(struct in_addr
*)he
->h_addr
;
267 port
= strtol(p
, (char **)&r
, 0);
270 saddr
->sin_port
= htons(port
);
274 void qemu_format_nic_info_str(VLANClientState
*vc
, uint8_t macaddr
[6])
276 snprintf(vc
->info_str
, sizeof(vc
->info_str
),
277 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
279 macaddr
[0], macaddr
[1], macaddr
[2],
280 macaddr
[3], macaddr
[4], macaddr
[5]);
283 void qemu_macaddr_default_if_unset(MACAddr
*macaddr
)
285 static int index
= 0;
286 static const MACAddr zero
= { .a
= { 0,0,0,0,0,0 } };
288 if (memcmp(macaddr
, &zero
, sizeof(zero
)) != 0)
290 macaddr
->a
[0] = 0x52;
291 macaddr
->a
[1] = 0x54;
292 macaddr
->a
[2] = 0x00;
293 macaddr
->a
[3] = 0x12;
294 macaddr
->a
[4] = 0x34;
295 macaddr
->a
[5] = 0x56 + index
++;
298 static char *assign_name(VLANClientState
*vc1
, const char *model
)
304 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
307 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
308 if (vc
!= vc1
&& strcmp(vc
->model
, model
) == 0) {
314 snprintf(buf
, sizeof(buf
), "%s.%d", model
, id
);
316 return qemu_strdup(buf
);
319 static ssize_t
qemu_deliver_packet(VLANClientState
*sender
,
323 static ssize_t
qemu_deliver_packet_iov(VLANClientState
*sender
,
324 const struct iovec
*iov
,
328 VLANClientState
*qemu_new_vlan_client(net_client_type type
,
330 VLANClientState
*peer
,
333 NetCanReceive
*can_receive
,
335 NetReceiveIOV
*receive_iov
,
341 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
,
472 VLANClientState
*vc
= opaque
;
478 return vc
->receive(vc
, data
, size
);
481 static ssize_t
qemu_vlan_deliver_packet(VLANClientState
*sender
,
486 VLANState
*vlan
= opaque
;
490 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
502 len
= vc
->receive(vc
, buf
, size
);
504 ret
= (ret
>= 0) ? ret
: len
;
510 void qemu_purge_queued_packets(VLANClientState
*vc
)
514 if (!vc
->peer
&& !vc
->vlan
) {
519 queue
= vc
->peer
->send_queue
;
521 queue
= vc
->vlan
->send_queue
;
524 qemu_net_queue_purge(queue
, vc
);
527 void qemu_flush_queued_packets(VLANClientState
*vc
)
532 queue
= vc
->vlan
->send_queue
;
534 queue
= vc
->send_queue
;
537 qemu_net_queue_flush(queue
);
540 ssize_t
qemu_send_packet_async(VLANClientState
*sender
,
541 const uint8_t *buf
, int size
,
542 NetPacketSent
*sent_cb
)
547 printf("qemu_send_packet_async:\n");
548 hex_dump(stdout
, buf
, size
);
551 if (sender
->link_down
|| (!sender
->peer
&& !sender
->vlan
)) {
556 queue
= sender
->peer
->send_queue
;
558 queue
= sender
->vlan
->send_queue
;
561 return qemu_net_queue_send(queue
, sender
, buf
, size
, sent_cb
);
564 void qemu_send_packet(VLANClientState
*vc
, const uint8_t *buf
, int size
)
566 qemu_send_packet_async(vc
, buf
, size
, NULL
);
569 static ssize_t
vc_sendv_compat(VLANClientState
*vc
, const struct iovec
*iov
,
572 uint8_t buffer
[4096];
576 for (i
= 0; i
< iovcnt
; i
++) {
579 len
= MIN(sizeof(buffer
) - offset
, iov
[i
].iov_len
);
580 memcpy(buffer
+ offset
, iov
[i
].iov_base
, len
);
584 return vc
->receive(vc
, buffer
, offset
);
587 static ssize_t
calc_iov_length(const struct iovec
*iov
, int iovcnt
)
592 for (i
= 0; i
< iovcnt
; i
++)
593 offset
+= iov
[i
].iov_len
;
597 static ssize_t
qemu_deliver_packet_iov(VLANClientState
*sender
,
598 const struct iovec
*iov
,
602 VLANClientState
*vc
= opaque
;
605 return calc_iov_length(iov
, iovcnt
);
608 if (vc
->receive_iov
) {
609 return vc
->receive_iov(vc
, iov
, iovcnt
);
611 return vc_sendv_compat(vc
, iov
, iovcnt
);
615 static ssize_t
qemu_vlan_deliver_packet_iov(VLANClientState
*sender
,
616 const struct iovec
*iov
,
620 VLANState
*vlan
= opaque
;
624 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
632 ret
= calc_iov_length(iov
, iovcnt
);
636 if (vc
->receive_iov
) {
637 len
= vc
->receive_iov(vc
, iov
, iovcnt
);
639 len
= vc_sendv_compat(vc
, iov
, iovcnt
);
642 ret
= (ret
>= 0) ? ret
: len
;
648 ssize_t
qemu_sendv_packet_async(VLANClientState
*sender
,
649 const struct iovec
*iov
, int iovcnt
,
650 NetPacketSent
*sent_cb
)
654 if (sender
->link_down
|| (!sender
->peer
&& !sender
->vlan
)) {
655 return calc_iov_length(iov
, iovcnt
);
659 queue
= sender
->peer
->send_queue
;
661 queue
= sender
->vlan
->send_queue
;
664 return qemu_net_queue_send_iov(queue
, sender
, iov
, iovcnt
, sent_cb
);
668 qemu_sendv_packet(VLANClientState
*vc
, const struct iovec
*iov
, int iovcnt
)
670 return qemu_sendv_packet_async(vc
, iov
, iovcnt
, NULL
);
673 #if defined(CONFIG_SLIRP)
675 /* slirp network adapter */
677 #define SLIRP_CFG_HOSTFWD 1
678 #define SLIRP_CFG_LEGACY 2
680 struct slirp_config_str
{
681 struct slirp_config_str
*next
;
687 typedef struct SlirpState
{
688 QTAILQ_ENTRY(SlirpState
) entry
;
696 static struct slirp_config_str
*slirp_configs
;
697 const char *legacy_tftp_prefix
;
698 const char *legacy_bootp_filename
;
699 static QTAILQ_HEAD(slirp_stacks
, SlirpState
) slirp_stacks
=
700 QTAILQ_HEAD_INITIALIZER(slirp_stacks
);
702 static int slirp_hostfwd(SlirpState
*s
, const char *redir_str
,
704 static int slirp_guestfwd(SlirpState
*s
, const char *config_str
,
708 static const char *legacy_smb_export
;
710 static int slirp_smb(SlirpState
*s
, const char *exported_dir
,
711 struct in_addr vserver_addr
);
712 static void slirp_smb_cleanup(SlirpState
*s
);
714 static inline void slirp_smb_cleanup(SlirpState
*s
) { }
717 int slirp_can_output(void *opaque
)
719 SlirpState
*s
= opaque
;
721 return qemu_can_send_packet(s
->vc
);
724 void slirp_output(void *opaque
, const uint8_t *pkt
, int pkt_len
)
726 SlirpState
*s
= opaque
;
729 printf("slirp output:\n");
730 hex_dump(stdout
, pkt
, pkt_len
);
732 qemu_send_packet(s
->vc
, pkt
, pkt_len
);
735 static ssize_t
slirp_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
737 SlirpState
*s
= vc
->opaque
;
740 printf("slirp input:\n");
741 hex_dump(stdout
, buf
, size
);
743 slirp_input(s
->slirp
, buf
, size
);
747 static void net_slirp_cleanup(VLANClientState
*vc
)
749 SlirpState
*s
= vc
->opaque
;
751 slirp_cleanup(s
->slirp
);
752 slirp_smb_cleanup(s
);
753 QTAILQ_REMOVE(&slirp_stacks
, s
, entry
);
757 static int net_slirp_init(VLANState
*vlan
, const char *model
,
758 const char *name
, int restricted
,
759 const char *vnetwork
, const char *vhost
,
760 const char *vhostname
, const char *tftp_export
,
761 const char *bootfile
, const char *vdhcp_start
,
762 const char *vnameserver
, const char *smb_export
,
763 const char *vsmbserver
)
765 /* default settings according to historic slirp */
766 struct in_addr net
= { .s_addr
= htonl(0x0a000200) }; /* 10.0.2.0 */
767 struct in_addr mask
= { .s_addr
= htonl(0xffffff00) }; /* 255.255.255.0 */
768 struct in_addr host
= { .s_addr
= htonl(0x0a000202) }; /* 10.0.2.2 */
769 struct in_addr dhcp
= { .s_addr
= htonl(0x0a00020f) }; /* 10.0.2.15 */
770 struct in_addr dns
= { .s_addr
= htonl(0x0a000203) }; /* 10.0.2.3 */
772 struct in_addr smbsrv
= { .s_addr
= 0 };
779 struct slirp_config_str
*config
;
782 tftp_export
= legacy_tftp_prefix
;
785 bootfile
= legacy_bootp_filename
;
789 if (get_str_sep(buf
, sizeof(buf
), &vnetwork
, '/') < 0) {
790 if (!inet_aton(vnetwork
, &net
)) {
793 addr
= ntohl(net
.s_addr
);
794 if (!(addr
& 0x80000000)) {
795 mask
.s_addr
= htonl(0xff000000); /* class A */
796 } else if ((addr
& 0xfff00000) == 0xac100000) {
797 mask
.s_addr
= htonl(0xfff00000); /* priv. 172.16.0.0/12 */
798 } else if ((addr
& 0xc0000000) == 0x80000000) {
799 mask
.s_addr
= htonl(0xffff0000); /* class B */
800 } else if ((addr
& 0xffff0000) == 0xc0a80000) {
801 mask
.s_addr
= htonl(0xffff0000); /* priv. 192.168.0.0/16 */
802 } else if ((addr
& 0xffff0000) == 0xc6120000) {
803 mask
.s_addr
= htonl(0xfffe0000); /* tests 198.18.0.0/15 */
804 } else if ((addr
& 0xe0000000) == 0xe0000000) {
805 mask
.s_addr
= htonl(0xffffff00); /* class C */
807 mask
.s_addr
= htonl(0xfffffff0); /* multicast/reserved */
810 if (!inet_aton(buf
, &net
)) {
813 shift
= strtol(vnetwork
, &end
, 10);
815 if (!inet_aton(vnetwork
, &mask
)) {
818 } else if (shift
< 4 || shift
> 32) {
821 mask
.s_addr
= htonl(0xffffffff << (32 - shift
));
824 net
.s_addr
&= mask
.s_addr
;
825 host
.s_addr
= net
.s_addr
| (htonl(0x0202) & ~mask
.s_addr
);
826 dhcp
.s_addr
= net
.s_addr
| (htonl(0x020f) & ~mask
.s_addr
);
827 dns
.s_addr
= net
.s_addr
| (htonl(0x0203) & ~mask
.s_addr
);
830 if (vhost
&& !inet_aton(vhost
, &host
)) {
833 if ((host
.s_addr
& mask
.s_addr
) != net
.s_addr
) {
837 if (vdhcp_start
&& !inet_aton(vdhcp_start
, &dhcp
)) {
840 if ((dhcp
.s_addr
& mask
.s_addr
) != net
.s_addr
||
841 dhcp
.s_addr
== host
.s_addr
|| dhcp
.s_addr
== dns
.s_addr
) {
845 if (vnameserver
&& !inet_aton(vnameserver
, &dns
)) {
848 if ((dns
.s_addr
& mask
.s_addr
) != net
.s_addr
||
849 dns
.s_addr
== host
.s_addr
) {
854 if (vsmbserver
&& !inet_aton(vsmbserver
, &smbsrv
)) {
859 s
= qemu_mallocz(sizeof(SlirpState
));
860 s
->slirp
= slirp_init(restricted
, net
, mask
, host
, vhostname
,
861 tftp_export
, bootfile
, dhcp
, dns
, s
);
862 QTAILQ_INSERT_TAIL(&slirp_stacks
, s
, entry
);
864 for (config
= slirp_configs
; config
; config
= config
->next
) {
865 if (config
->flags
& SLIRP_CFG_HOSTFWD
) {
866 if (slirp_hostfwd(s
, config
->str
,
867 config
->flags
& SLIRP_CFG_LEGACY
) < 0)
870 if (slirp_guestfwd(s
, config
->str
,
871 config
->flags
& SLIRP_CFG_LEGACY
) < 0)
877 smb_export
= legacy_smb_export
;
880 if (slirp_smb(s
, smb_export
, smbsrv
) < 0)
885 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_SLIRP
,
886 vlan
, NULL
, model
, name
, NULL
,
888 net_slirp_cleanup
, s
);
889 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
890 "net=%s, restricted=%c", inet_ntoa(net
), restricted
? 'y' : 'n');
894 static SlirpState
*slirp_lookup(Monitor
*mon
, const char *vlan
,
900 vc
= qemu_find_vlan_client_by_name(mon
, strtol(vlan
, NULL
, 0), stack
);
904 if (strcmp(vc
->model
, "user")) {
905 monitor_printf(mon
, "invalid device specified\n");
910 if (QTAILQ_EMPTY(&slirp_stacks
)) {
911 monitor_printf(mon
, "user mode network stack not in use\n");
914 return QTAILQ_FIRST(&slirp_stacks
);
918 void net_slirp_hostfwd_remove(Monitor
*mon
, const QDict
*qdict
)
920 struct in_addr host_addr
= { .s_addr
= INADDR_ANY
};
923 const char *src_str
, *p
;
927 const char *arg1
= qdict_get_str(qdict
, "arg1");
928 const char *arg2
= qdict_get_try_str(qdict
, "arg2");
929 const char *arg3
= qdict_get_try_str(qdict
, "arg3");
932 s
= slirp_lookup(mon
, arg1
, arg2
);
935 s
= slirp_lookup(mon
, NULL
, NULL
);
942 if (!src_str
|| !src_str
[0])
946 get_str_sep(buf
, sizeof(buf
), &p
, ':');
948 if (!strcmp(buf
, "tcp") || buf
[0] == '\0') {
950 } else if (!strcmp(buf
, "udp")) {
956 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
959 if (buf
[0] != '\0' && !inet_aton(buf
, &host_addr
)) {
965 err
= slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks
)->slirp
, is_udp
,
966 host_addr
, host_port
);
968 monitor_printf(mon
, "host forwarding rule for %s %s\n", src_str
,
969 err
? "removed" : "not found");
973 monitor_printf(mon
, "invalid format\n");
976 static int slirp_hostfwd(SlirpState
*s
, const char *redir_str
,
979 struct in_addr host_addr
= { .s_addr
= INADDR_ANY
};
980 struct in_addr guest_addr
= { .s_addr
= 0 };
981 int host_port
, guest_port
;
988 if (!p
|| get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
991 if (!strcmp(buf
, "tcp") || buf
[0] == '\0') {
993 } else if (!strcmp(buf
, "udp")) {
999 if (!legacy_format
) {
1000 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1003 if (buf
[0] != '\0' && !inet_aton(buf
, &host_addr
)) {
1008 if (get_str_sep(buf
, sizeof(buf
), &p
, legacy_format
? ':' : '-') < 0) {
1011 host_port
= strtol(buf
, &end
, 0);
1012 if (*end
!= '\0' || host_port
< 1 || host_port
> 65535) {
1016 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1019 if (buf
[0] != '\0' && !inet_aton(buf
, &guest_addr
)) {
1023 guest_port
= strtol(p
, &end
, 0);
1024 if (*end
!= '\0' || guest_port
< 1 || guest_port
> 65535) {
1028 if (slirp_add_hostfwd(s
->slirp
, is_udp
, host_addr
, host_port
, guest_addr
,
1030 qemu_error("could not set up host forwarding rule '%s'\n",
1037 qemu_error("invalid host forwarding rule '%s'\n", redir_str
);
1041 void net_slirp_hostfwd_add(Monitor
*mon
, const QDict
*qdict
)
1043 const char *redir_str
;
1045 const char *arg1
= qdict_get_str(qdict
, "arg1");
1046 const char *arg2
= qdict_get_try_str(qdict
, "arg2");
1047 const char *arg3
= qdict_get_try_str(qdict
, "arg3");
1050 s
= slirp_lookup(mon
, arg1
, arg2
);
1053 s
= slirp_lookup(mon
, NULL
, NULL
);
1057 slirp_hostfwd(s
, redir_str
, 0);
1062 int net_slirp_redir(const char *redir_str
)
1064 struct slirp_config_str
*config
;
1066 if (QTAILQ_EMPTY(&slirp_stacks
)) {
1067 config
= qemu_malloc(sizeof(*config
));
1068 pstrcpy(config
->str
, sizeof(config
->str
), redir_str
);
1069 config
->flags
= SLIRP_CFG_HOSTFWD
| SLIRP_CFG_LEGACY
;
1070 config
->next
= slirp_configs
;
1071 slirp_configs
= config
;
1075 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks
), redir_str
, 1);
1080 /* automatic user mode samba server configuration */
1081 static void slirp_smb_cleanup(SlirpState
*s
)
1085 if (s
->smb_dir
[0] != '\0') {
1086 snprintf(cmd
, sizeof(cmd
), "rm -rf %s", s
->smb_dir
);
1088 s
->smb_dir
[0] = '\0';
1092 static int slirp_smb(SlirpState
* s
, const char *exported_dir
,
1093 struct in_addr vserver_addr
)
1095 static int instance
;
1097 char smb_cmdline
[128];
1100 snprintf(s
->smb_dir
, sizeof(s
->smb_dir
), "/tmp/qemu-smb.%ld-%d",
1101 (long)getpid(), instance
++);
1102 if (mkdir(s
->smb_dir
, 0700) < 0) {
1103 qemu_error("could not create samba server dir '%s'\n", s
->smb_dir
);
1106 snprintf(smb_conf
, sizeof(smb_conf
), "%s/%s", s
->smb_dir
, "smb.conf");
1108 f
= fopen(smb_conf
, "w");
1110 slirp_smb_cleanup(s
);
1111 qemu_error("could not create samba server configuration file '%s'\n",
1119 "socket address=127.0.0.1\n"
1120 "pid directory=%s\n"
1121 "lock directory=%s\n"
1122 "log file=%s/log.smbd\n"
1123 "smb passwd file=%s/smbpasswd\n"
1124 "security = share\n"
1138 snprintf(smb_cmdline
, sizeof(smb_cmdline
), "%s -s %s",
1139 SMBD_COMMAND
, smb_conf
);
1141 if (slirp_add_exec(s
->slirp
, 0, smb_cmdline
, &vserver_addr
, 139) < 0) {
1142 slirp_smb_cleanup(s
);
1143 qemu_error("conflicting/invalid smbserver address\n");
1149 /* automatic user mode samba server configuration (legacy interface) */
1150 int net_slirp_smb(const char *exported_dir
)
1152 struct in_addr vserver_addr
= { .s_addr
= 0 };
1154 if (legacy_smb_export
) {
1155 fprintf(stderr
, "-smb given twice\n");
1158 legacy_smb_export
= exported_dir
;
1159 if (!QTAILQ_EMPTY(&slirp_stacks
)) {
1160 return slirp_smb(QTAILQ_FIRST(&slirp_stacks
), exported_dir
,
1166 #endif /* !defined(_WIN32) */
1169 CharDriverState
*hd
;
1170 struct in_addr server
;
1175 static int guestfwd_can_read(void *opaque
)
1177 struct GuestFwd
*fwd
= opaque
;
1178 return slirp_socket_can_recv(fwd
->slirp
, fwd
->server
, fwd
->port
);
1181 static void guestfwd_read(void *opaque
, const uint8_t *buf
, int size
)
1183 struct GuestFwd
*fwd
= opaque
;
1184 slirp_socket_recv(fwd
->slirp
, fwd
->server
, fwd
->port
, buf
, size
);
1187 static int slirp_guestfwd(SlirpState
*s
, const char *config_str
,
1190 struct in_addr server
= { .s_addr
= 0 };
1191 struct GuestFwd
*fwd
;
1198 if (legacy_format
) {
1199 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1203 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1206 if (strcmp(buf
, "tcp") && buf
[0] != '\0') {
1209 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0) {
1212 if (buf
[0] != '\0' && !inet_aton(buf
, &server
)) {
1215 if (get_str_sep(buf
, sizeof(buf
), &p
, '-') < 0) {
1219 port
= strtol(buf
, &end
, 10);
1220 if (*end
!= '\0' || port
< 1 || port
> 65535) {
1224 fwd
= qemu_malloc(sizeof(struct GuestFwd
));
1225 snprintf(buf
, sizeof(buf
), "guestfwd.tcp:%d", port
);
1226 fwd
->hd
= qemu_chr_open(buf
, p
, NULL
);
1228 qemu_error("could not open guest forwarding device '%s'\n", buf
);
1233 if (slirp_add_exec(s
->slirp
, 3, fwd
->hd
, &server
, port
) < 0) {
1234 qemu_error("conflicting/invalid host:port in guest forwarding "
1235 "rule '%s'\n", config_str
);
1239 fwd
->server
= server
;
1241 fwd
->slirp
= s
->slirp
;
1243 qemu_chr_add_handlers(fwd
->hd
, guestfwd_can_read
, guestfwd_read
,
1248 qemu_error("invalid guest forwarding rule '%s'\n", config_str
);
1252 void do_info_usernet(Monitor
*mon
)
1256 QTAILQ_FOREACH(s
, &slirp_stacks
, entry
) {
1257 monitor_printf(mon
, "VLAN %d (%s):\n", s
->vc
->vlan
->id
, s
->vc
->name
);
1258 slirp_connection_info(s
->slirp
, mon
);
1262 #endif /* CONFIG_SLIRP */
1264 #if !defined(_WIN32)
1266 /* Maximum GSO packet size (64k) plus plenty of room for
1267 * the ethernet and virtio_net headers
1269 #define TAP_BUFSIZE (4096 + 65536)
1271 typedef struct TAPState
{
1272 VLANClientState
*vc
;
1274 char down_script
[1024];
1275 char down_script_arg
[128];
1276 uint8_t buf
[TAP_BUFSIZE
];
1277 unsigned int read_poll
: 1;
1278 unsigned int write_poll
: 1;
1279 unsigned int has_vnet_hdr
: 1;
1282 static int launch_script(const char *setup_script
, const char *ifname
, int fd
);
1284 static int tap_can_send(void *opaque
);
1285 static void tap_send(void *opaque
);
1286 static void tap_writable(void *opaque
);
1288 static void tap_update_fd_handler(TAPState
*s
)
1290 qemu_set_fd_handler2(s
->fd
,
1291 s
->read_poll
? tap_can_send
: NULL
,
1292 s
->read_poll
? tap_send
: NULL
,
1293 s
->write_poll
? tap_writable
: NULL
,
1297 static void tap_read_poll(TAPState
*s
, int enable
)
1299 s
->read_poll
= !!enable
;
1300 tap_update_fd_handler(s
);
1303 static void tap_write_poll(TAPState
*s
, int enable
)
1305 s
->write_poll
= !!enable
;
1306 tap_update_fd_handler(s
);
1309 static void tap_writable(void *opaque
)
1311 TAPState
*s
= opaque
;
1313 tap_write_poll(s
, 0);
1315 qemu_flush_queued_packets(s
->vc
);
1318 static ssize_t
tap_write_packet(TAPState
*s
, const struct iovec
*iov
, int iovcnt
)
1323 len
= writev(s
->fd
, iov
, iovcnt
);
1324 } while (len
== -1 && errno
== EINTR
);
1326 if (len
== -1 && errno
== EAGAIN
) {
1327 tap_write_poll(s
, 1);
1334 static ssize_t
tap_receive_iov(VLANClientState
*vc
, const struct iovec
*iov
,
1337 TAPState
*s
= vc
->opaque
;
1338 const struct iovec
*iovp
= iov
;
1339 struct iovec iov_copy
[iovcnt
+ 1];
1340 struct virtio_net_hdr hdr
= { 0, };
1342 if (s
->has_vnet_hdr
) {
1343 iov_copy
[0].iov_base
= &hdr
;
1344 iov_copy
[0].iov_len
= sizeof(hdr
);
1345 memcpy(&iov_copy
[1], iov
, iovcnt
* sizeof(*iov
));
1350 return tap_write_packet(s
, iovp
, iovcnt
);
1353 static ssize_t
tap_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1355 TAPState
*s
= vc
->opaque
;
1356 struct iovec iov
[2];
1358 struct virtio_net_hdr hdr
= { 0, };
1360 if (s
->has_vnet_hdr
) {
1361 iov
[iovcnt
].iov_base
= &hdr
;
1362 iov
[iovcnt
].iov_len
= sizeof(hdr
);
1366 iov
[iovcnt
].iov_base
= (char *)buf
;
1367 iov
[iovcnt
].iov_len
= size
;
1370 return tap_write_packet(s
, iov
, iovcnt
);
1373 static int tap_can_send(void *opaque
)
1375 TAPState
*s
= opaque
;
1377 return qemu_can_send_packet(s
->vc
);
1381 static ssize_t
tap_read_packet(int tapfd
, uint8_t *buf
, int maxlen
)
1386 sbuf
.maxlen
= maxlen
;
1387 sbuf
.buf
= (char *)buf
;
1389 return getmsg(tapfd
, NULL
, &sbuf
, &f
) >= 0 ? sbuf
.len
: -1;
1392 static ssize_t
tap_read_packet(int tapfd
, uint8_t *buf
, int maxlen
)
1394 return read(tapfd
, buf
, maxlen
);
1398 static void tap_send_completed(VLANClientState
*vc
, ssize_t len
)
1400 TAPState
*s
= vc
->opaque
;
1401 tap_read_poll(s
, 1);
1404 static void tap_send(void *opaque
)
1406 TAPState
*s
= opaque
;
1410 uint8_t *buf
= s
->buf
;
1412 size
= tap_read_packet(s
->fd
, s
->buf
, sizeof(s
->buf
));
1417 if (s
->has_vnet_hdr
) {
1418 buf
+= sizeof(struct virtio_net_hdr
);
1419 size
-= sizeof(struct virtio_net_hdr
);
1422 size
= qemu_send_packet_async(s
->vc
, buf
, size
, tap_send_completed
);
1424 tap_read_poll(s
, 0);
1429 /* sndbuf should be set to a value lower than the tx queue
1430 * capacity of any destination network interface.
1431 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1432 * a good default, given a 1500 byte MTU.
1434 #define TAP_DEFAULT_SNDBUF 1024*1024
1436 static int tap_set_sndbuf(TAPState
*s
, QemuOpts
*opts
)
1440 sndbuf
= qemu_opt_get_size(opts
, "sndbuf", TAP_DEFAULT_SNDBUF
);
1445 if (ioctl(s
->fd
, TUNSETSNDBUF
, &sndbuf
) == -1 && qemu_opt_get(opts
, "sndbuf")) {
1446 qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno
));
1452 static int tap_probe_vnet_hdr(int fd
)
1456 if (ioctl(fd
, TUNGETIFF
, &ifr
) != 0) {
1457 qemu_error("TUNGETIFF ioctl() failed: %s\n", strerror(errno
));
1461 return ifr
.ifr_flags
& IFF_VNET_HDR
;
1464 static void tap_cleanup(VLANClientState
*vc
)
1466 TAPState
*s
= vc
->opaque
;
1468 qemu_purge_queued_packets(vc
);
1470 if (s
->down_script
[0])
1471 launch_script(s
->down_script
, s
->down_script_arg
, s
->fd
);
1473 tap_read_poll(s
, 0);
1474 tap_write_poll(s
, 0);
1481 static TAPState
*net_tap_fd_init(VLANState
*vlan
,
1489 s
= qemu_mallocz(sizeof(TAPState
));
1491 s
->has_vnet_hdr
= vnet_hdr
!= 0;
1492 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_TAP
,
1493 vlan
, NULL
, model
, name
, NULL
,
1494 tap_receive
, tap_receive_iov
,
1496 tap_read_poll(s
, 1);
1500 #if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
1501 static int tap_open(char *ifname
, int ifname_size
,
1502 int *vnet_hdr
, int vnet_hdr_required
)
1508 TFR(fd
= open("/dev/tap", O_RDWR
));
1510 fprintf(stderr
, "warning: could not open /dev/tap: no virtual network emulation\n");
1515 dev
= devname(s
.st_rdev
, S_IFCHR
);
1516 pstrcpy(ifname
, ifname_size
, dev
);
1518 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1521 #elif defined(__sun__)
1522 #define TUNNEWPPA (('T'<<16) | 0x0001)
1524 * Allocate TAP device, returns opened fd.
1525 * Stores dev name in the first arg(must be large enough).
1527 static int tap_alloc(char *dev
, size_t dev_size
)
1529 int tap_fd
, if_fd
, ppa
= -1;
1530 static int ip_fd
= 0;
1533 static int arp_fd
= 0;
1534 int ip_muxid
, arp_muxid
;
1535 struct strioctl strioc_if
, strioc_ppa
;
1536 int link_type
= I_PLINK
;;
1538 char actual_name
[32] = "";
1540 memset(&ifr
, 0x0, sizeof(ifr
));
1544 while( *ptr
&& !qemu_isdigit((int)*ptr
) ) ptr
++;
1548 /* Check if IP device was opened */
1552 TFR(ip_fd
= open("/dev/udp", O_RDWR
, 0));
1554 syslog(LOG_ERR
, "Can't open /dev/ip (actually /dev/udp)");
1558 TFR(tap_fd
= open("/dev/tap", O_RDWR
, 0));
1560 syslog(LOG_ERR
, "Can't open /dev/tap");
1564 /* Assign a new PPA and get its unit number. */
1565 strioc_ppa
.ic_cmd
= TUNNEWPPA
;
1566 strioc_ppa
.ic_timout
= 0;
1567 strioc_ppa
.ic_len
= sizeof(ppa
);
1568 strioc_ppa
.ic_dp
= (char *)&ppa
;
1569 if ((ppa
= ioctl (tap_fd
, I_STR
, &strioc_ppa
)) < 0)
1570 syslog (LOG_ERR
, "Can't assign new interface");
1572 TFR(if_fd
= open("/dev/tap", O_RDWR
, 0));
1574 syslog(LOG_ERR
, "Can't open /dev/tap (2)");
1577 if(ioctl(if_fd
, I_PUSH
, "ip") < 0){
1578 syslog(LOG_ERR
, "Can't push IP module");
1582 if (ioctl(if_fd
, SIOCGLIFFLAGS
, &ifr
) < 0)
1583 syslog(LOG_ERR
, "Can't get flags\n");
1585 snprintf (actual_name
, 32, "tap%d", ppa
);
1586 pstrcpy(ifr
.lifr_name
, sizeof(ifr
.lifr_name
), actual_name
);
1589 /* Assign ppa according to the unit number returned by tun device */
1591 if (ioctl (if_fd
, SIOCSLIFNAME
, &ifr
) < 0)
1592 syslog (LOG_ERR
, "Can't set PPA %d", ppa
);
1593 if (ioctl(if_fd
, SIOCGLIFFLAGS
, &ifr
) <0)
1594 syslog (LOG_ERR
, "Can't get flags\n");
1595 /* Push arp module to if_fd */
1596 if (ioctl (if_fd
, I_PUSH
, "arp") < 0)
1597 syslog (LOG_ERR
, "Can't push ARP module (2)");
1599 /* Push arp module to ip_fd */
1600 if (ioctl (ip_fd
, I_POP
, NULL
) < 0)
1601 syslog (LOG_ERR
, "I_POP failed\n");
1602 if (ioctl (ip_fd
, I_PUSH
, "arp") < 0)
1603 syslog (LOG_ERR
, "Can't push ARP module (3)\n");
1605 TFR(arp_fd
= open ("/dev/tap", O_RDWR
, 0));
1607 syslog (LOG_ERR
, "Can't open %s\n", "/dev/tap");
1609 /* Set ifname to arp */
1610 strioc_if
.ic_cmd
= SIOCSLIFNAME
;
1611 strioc_if
.ic_timout
= 0;
1612 strioc_if
.ic_len
= sizeof(ifr
);
1613 strioc_if
.ic_dp
= (char *)&ifr
;
1614 if (ioctl(arp_fd
, I_STR
, &strioc_if
) < 0){
1615 syslog (LOG_ERR
, "Can't set ifname to arp\n");
1618 if((ip_muxid
= ioctl(ip_fd
, I_LINK
, if_fd
)) < 0){
1619 syslog(LOG_ERR
, "Can't link TAP device to IP");
1623 if ((arp_muxid
= ioctl (ip_fd
, link_type
, arp_fd
)) < 0)
1624 syslog (LOG_ERR
, "Can't link TAP device to ARP");
1628 memset(&ifr
, 0x0, sizeof(ifr
));
1629 pstrcpy(ifr
.lifr_name
, sizeof(ifr
.lifr_name
), actual_name
);
1630 ifr
.lifr_ip_muxid
= ip_muxid
;
1631 ifr
.lifr_arp_muxid
= arp_muxid
;
1633 if (ioctl (ip_fd
, SIOCSLIFMUXID
, &ifr
) < 0)
1635 ioctl (ip_fd
, I_PUNLINK
, arp_muxid
);
1636 ioctl (ip_fd
, I_PUNLINK
, ip_muxid
);
1637 syslog (LOG_ERR
, "Can't set multiplexor id");
1640 snprintf(dev
, dev_size
, "tap%d", ppa
);
1644 static int tap_open(char *ifname
, int ifname_size
,
1645 int *vnet_hdr
, int vnet_hdr_required
)
1649 if( (fd
= tap_alloc(dev
, sizeof(dev
))) < 0 ){
1650 fprintf(stderr
, "Cannot allocate TAP device\n");
1653 pstrcpy(ifname
, ifname_size
, dev
);
1654 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1657 #elif defined (_AIX)
1658 static int tap_open(char *ifname
, int ifname_size
,
1659 int *vnet_hdr
, int vnet_hdr_required
)
1661 fprintf (stderr
, "no tap on AIX\n");
1665 static int tap_open(char *ifname
, int ifname_size
,
1666 int *vnet_hdr
, int vnet_hdr_required
)
1671 TFR(fd
= open("/dev/net/tun", O_RDWR
));
1673 fprintf(stderr
, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1676 memset(&ifr
, 0, sizeof(ifr
));
1677 ifr
.ifr_flags
= IFF_TAP
| IFF_NO_PI
;
1680 unsigned int features
;
1682 if (ioctl(fd
, TUNGETFEATURES
, &features
) == 0 &&
1683 features
& IFF_VNET_HDR
) {
1685 ifr
.ifr_flags
|= IFF_VNET_HDR
;
1688 if (vnet_hdr_required
&& !*vnet_hdr
) {
1689 qemu_error("vnet_hdr=1 requested, but no kernel "
1690 "support for IFF_VNET_HDR available");
1696 if (ifname
[0] != '\0')
1697 pstrcpy(ifr
.ifr_name
, IFNAMSIZ
, ifname
);
1699 pstrcpy(ifr
.ifr_name
, IFNAMSIZ
, "tap%d");
1700 ret
= ioctl(fd
, TUNSETIFF
, (void *) &ifr
);
1702 fprintf(stderr
, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1706 pstrcpy(ifname
, ifname_size
, ifr
.ifr_name
);
1707 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1712 static int launch_script(const char *setup_script
, const char *ifname
, int fd
)
1714 sigset_t oldmask
, mask
;
1720 sigaddset(&mask
, SIGCHLD
);
1721 sigprocmask(SIG_BLOCK
, &mask
, &oldmask
);
1723 /* try to launch network script */
1726 int open_max
= sysconf(_SC_OPEN_MAX
), i
;
1728 for (i
= 0; i
< open_max
; i
++) {
1729 if (i
!= STDIN_FILENO
&&
1730 i
!= STDOUT_FILENO
&&
1731 i
!= STDERR_FILENO
&&
1737 *parg
++ = (char *)setup_script
;
1738 *parg
++ = (char *)ifname
;
1740 execv(setup_script
, args
);
1742 } else if (pid
> 0) {
1743 while (waitpid(pid
, &status
, 0) != pid
) {
1746 sigprocmask(SIG_SETMASK
, &oldmask
, NULL
);
1748 if (WIFEXITED(status
) && WEXITSTATUS(status
) == 0) {
1752 fprintf(stderr
, "%s: could not launch network script\n", setup_script
);
1756 static int net_tap_init(QemuOpts
*opts
, int *vnet_hdr
)
1758 int fd
, vnet_hdr_required
;
1759 char ifname
[128] = {0,};
1760 const char *setup_script
;
1762 if (qemu_opt_get(opts
, "ifname")) {
1763 pstrcpy(ifname
, sizeof(ifname
), qemu_opt_get(opts
, "ifname"));
1766 *vnet_hdr
= qemu_opt_get_bool(opts
, "vnet_hdr", 1);
1767 if (qemu_opt_get(opts
, "vnet_hdr")) {
1768 vnet_hdr_required
= *vnet_hdr
;
1770 vnet_hdr_required
= 0;
1773 TFR(fd
= tap_open(ifname
, sizeof(ifname
), vnet_hdr
, vnet_hdr_required
));
1778 setup_script
= qemu_opt_get(opts
, "script");
1780 setup_script
[0] != '\0' &&
1781 strcmp(setup_script
, "no") != 0 &&
1782 launch_script(setup_script
, ifname
, fd
)) {
1787 qemu_opt_set(opts
, "ifname", ifname
);
1792 #endif /* !_WIN32 */
1794 #if defined(CONFIG_VDE)
1795 typedef struct VDEState
{
1796 VLANClientState
*vc
;
1800 static void vde_to_qemu(void *opaque
)
1802 VDEState
*s
= opaque
;
1806 size
= vde_recv(s
->vde
, (char *)buf
, sizeof(buf
), 0);
1808 qemu_send_packet(s
->vc
, buf
, size
);
1812 static ssize_t
vde_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1814 VDEState
*s
= vc
->opaque
;
1818 ret
= vde_send(s
->vde
, (const char *)buf
, size
, 0);
1819 } while (ret
< 0 && errno
== EINTR
);
1824 static void vde_cleanup(VLANClientState
*vc
)
1826 VDEState
*s
= vc
->opaque
;
1827 qemu_set_fd_handler(vde_datafd(s
->vde
), NULL
, NULL
, NULL
);
1832 static int net_vde_init(VLANState
*vlan
, const char *model
,
1833 const char *name
, const char *sock
,
1834 int port
, const char *group
, int mode
)
1837 char *init_group
= (char *)group
;
1838 char *init_sock
= (char *)sock
;
1840 struct vde_open_args args
= {
1842 .group
= init_group
,
1846 s
= qemu_mallocz(sizeof(VDEState
));
1847 s
->vde
= vde_open(init_sock
, (char *)"QEMU", &args
);
1852 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_VDE
,
1853 vlan
, NULL
, model
, name
, NULL
,
1856 qemu_set_fd_handler(vde_datafd(s
->vde
), vde_to_qemu
, NULL
, s
);
1857 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
), "sock=%s,fd=%d",
1858 sock
, vde_datafd(s
->vde
));
1863 /* network connection */
1864 typedef struct NetSocketState
{
1865 VLANClientState
*vc
;
1867 int state
; /* 0 = getting length, 1 = getting data */
1869 unsigned int packet_len
;
1871 struct sockaddr_in dgram_dst
; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1874 typedef struct NetSocketListenState
{
1879 } NetSocketListenState
;
1881 /* XXX: we consider we can send the whole packet without blocking */
1882 static ssize_t
net_socket_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1884 NetSocketState
*s
= vc
->opaque
;
1888 send_all(s
->fd
, (const uint8_t *)&len
, sizeof(len
));
1889 return send_all(s
->fd
, buf
, size
);
1892 static ssize_t
net_socket_receive_dgram(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
1894 NetSocketState
*s
= vc
->opaque
;
1896 return sendto(s
->fd
, (const void *)buf
, size
, 0,
1897 (struct sockaddr
*)&s
->dgram_dst
, sizeof(s
->dgram_dst
));
1900 static void net_socket_send(void *opaque
)
1902 NetSocketState
*s
= opaque
;
1908 size
= recv(s
->fd
, (void *)buf1
, sizeof(buf1
), 0);
1910 err
= socket_error();
1911 if (err
!= EWOULDBLOCK
)
1913 } else if (size
== 0) {
1914 /* end of connection */
1916 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
1922 /* reassemble a packet from the network */
1928 memcpy(s
->buf
+ s
->index
, buf
, l
);
1932 if (s
->index
== 4) {
1934 s
->packet_len
= ntohl(*(uint32_t *)s
->buf
);
1940 l
= s
->packet_len
- s
->index
;
1943 if (s
->index
+ l
<= sizeof(s
->buf
)) {
1944 memcpy(s
->buf
+ s
->index
, buf
, l
);
1946 fprintf(stderr
, "serious error: oversized packet received,"
1947 "connection terminated.\n");
1955 if (s
->index
>= s
->packet_len
) {
1956 qemu_send_packet(s
->vc
, s
->buf
, s
->packet_len
);
1965 static void net_socket_send_dgram(void *opaque
)
1967 NetSocketState
*s
= opaque
;
1970 size
= recv(s
->fd
, (void *)s
->buf
, sizeof(s
->buf
), 0);
1974 /* end of connection */
1975 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
1978 qemu_send_packet(s
->vc
, s
->buf
, size
);
1981 static int net_socket_mcast_create(struct sockaddr_in
*mcastaddr
)
1986 if (!IN_MULTICAST(ntohl(mcastaddr
->sin_addr
.s_addr
))) {
1987 fprintf(stderr
, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1988 inet_ntoa(mcastaddr
->sin_addr
),
1989 (int)ntohl(mcastaddr
->sin_addr
.s_addr
));
1993 fd
= socket(PF_INET
, SOCK_DGRAM
, 0);
1995 perror("socket(PF_INET, SOCK_DGRAM)");
2000 ret
=setsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
,
2001 (const char *)&val
, sizeof(val
));
2003 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
2007 ret
= bind(fd
, (struct sockaddr
*)mcastaddr
, sizeof(*mcastaddr
));
2013 /* Add host to multicast group */
2014 imr
.imr_multiaddr
= mcastaddr
->sin_addr
;
2015 imr
.imr_interface
.s_addr
= htonl(INADDR_ANY
);
2017 ret
= setsockopt(fd
, IPPROTO_IP
, IP_ADD_MEMBERSHIP
,
2018 (const char *)&imr
, sizeof(struct ip_mreq
));
2020 perror("setsockopt(IP_ADD_MEMBERSHIP)");
2024 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
2026 ret
=setsockopt(fd
, IPPROTO_IP
, IP_MULTICAST_LOOP
,
2027 (const char *)&val
, sizeof(val
));
2029 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
2033 socket_set_nonblock(fd
);
2041 static void net_socket_cleanup(VLANClientState
*vc
)
2043 NetSocketState
*s
= vc
->opaque
;
2044 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
2049 static NetSocketState
*net_socket_fd_init_dgram(VLANState
*vlan
,
2052 int fd
, int is_connected
)
2054 struct sockaddr_in saddr
;
2056 socklen_t saddr_len
;
2059 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
2060 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
2061 * by ONLY ONE process: we must "clone" this dgram socket --jjo
2065 if (getsockname(fd
, (struct sockaddr
*) &saddr
, &saddr_len
) == 0) {
2067 if (saddr
.sin_addr
.s_addr
==0) {
2068 fprintf(stderr
, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
2072 /* clone dgram socket */
2073 newfd
= net_socket_mcast_create(&saddr
);
2075 /* error already reported by net_socket_mcast_create() */
2079 /* clone newfd to fd, close newfd */
2084 fprintf(stderr
, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2085 fd
, strerror(errno
));
2090 s
= qemu_mallocz(sizeof(NetSocketState
));
2093 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET
,
2094 vlan
, NULL
, model
, name
, NULL
,
2095 net_socket_receive_dgram
, NULL
,
2096 net_socket_cleanup
, s
);
2097 qemu_set_fd_handler(s
->fd
, net_socket_send_dgram
, NULL
, s
);
2099 /* mcast: save bound address as dst */
2100 if (is_connected
) s
->dgram_dst
=saddr
;
2102 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2103 "socket: fd=%d (%s mcast=%s:%d)",
2104 fd
, is_connected
? "cloned" : "",
2105 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2109 static void net_socket_connect(void *opaque
)
2111 NetSocketState
*s
= opaque
;
2112 qemu_set_fd_handler(s
->fd
, net_socket_send
, NULL
, s
);
2115 static NetSocketState
*net_socket_fd_init_stream(VLANState
*vlan
,
2118 int fd
, int is_connected
)
2121 s
= qemu_mallocz(sizeof(NetSocketState
));
2123 s
->vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET
,
2124 vlan
, NULL
, model
, name
, NULL
,
2125 net_socket_receive
, NULL
,
2126 net_socket_cleanup
, s
);
2127 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2128 "socket: fd=%d", fd
);
2130 net_socket_connect(s
);
2132 qemu_set_fd_handler(s
->fd
, NULL
, net_socket_connect
, s
);
2137 static NetSocketState
*net_socket_fd_init(VLANState
*vlan
,
2138 const char *model
, const char *name
,
2139 int fd
, int is_connected
)
2141 int so_type
= -1, optlen
=sizeof(so_type
);
2143 if(getsockopt(fd
, SOL_SOCKET
, SO_TYPE
, (char *)&so_type
,
2144 (socklen_t
*)&optlen
)< 0) {
2145 fprintf(stderr
, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd
);
2150 return net_socket_fd_init_dgram(vlan
, model
, name
, fd
, is_connected
);
2152 return net_socket_fd_init_stream(vlan
, model
, name
, fd
, is_connected
);
2154 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2155 fprintf(stderr
, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type
, fd
);
2156 return net_socket_fd_init_stream(vlan
, model
, name
, fd
, is_connected
);
2161 static void net_socket_accept(void *opaque
)
2163 NetSocketListenState
*s
= opaque
;
2165 struct sockaddr_in saddr
;
2170 len
= sizeof(saddr
);
2171 fd
= accept(s
->fd
, (struct sockaddr
*)&saddr
, &len
);
2172 if (fd
< 0 && errno
!= EINTR
) {
2174 } else if (fd
>= 0) {
2178 s1
= net_socket_fd_init(s
->vlan
, s
->model
, s
->name
, fd
, 1);
2182 snprintf(s1
->vc
->info_str
, sizeof(s1
->vc
->info_str
),
2183 "socket: connection from %s:%d",
2184 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2188 static int net_socket_listen_init(VLANState
*vlan
,
2191 const char *host_str
)
2193 NetSocketListenState
*s
;
2195 struct sockaddr_in saddr
;
2197 if (parse_host_port(&saddr
, host_str
) < 0)
2200 s
= qemu_mallocz(sizeof(NetSocketListenState
));
2202 fd
= socket(PF_INET
, SOCK_STREAM
, 0);
2207 socket_set_nonblock(fd
);
2209 /* allow fast reuse */
2211 setsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, (const char *)&val
, sizeof(val
));
2213 ret
= bind(fd
, (struct sockaddr
*)&saddr
, sizeof(saddr
));
2218 ret
= listen(fd
, 0);
2224 s
->model
= qemu_strdup(model
);
2225 s
->name
= name
? qemu_strdup(name
) : NULL
;
2227 qemu_set_fd_handler(fd
, net_socket_accept
, NULL
, s
);
2231 static int net_socket_connect_init(VLANState
*vlan
,
2234 const char *host_str
)
2237 int fd
, connected
, ret
, err
;
2238 struct sockaddr_in saddr
;
2240 if (parse_host_port(&saddr
, host_str
) < 0)
2243 fd
= socket(PF_INET
, SOCK_STREAM
, 0);
2248 socket_set_nonblock(fd
);
2252 ret
= connect(fd
, (struct sockaddr
*)&saddr
, sizeof(saddr
));
2254 err
= socket_error();
2255 if (err
== EINTR
|| err
== EWOULDBLOCK
) {
2256 } else if (err
== EINPROGRESS
) {
2259 } else if (err
== WSAEALREADY
) {
2272 s
= net_socket_fd_init(vlan
, model
, name
, fd
, connected
);
2275 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2276 "socket: connect to %s:%d",
2277 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2281 static int net_socket_mcast_init(VLANState
*vlan
,
2284 const char *host_str
)
2288 struct sockaddr_in saddr
;
2290 if (parse_host_port(&saddr
, host_str
) < 0)
2294 fd
= net_socket_mcast_create(&saddr
);
2298 s
= net_socket_fd_init(vlan
, model
, name
, fd
, 0);
2302 s
->dgram_dst
= saddr
;
2304 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2305 "socket: mcast=%s:%d",
2306 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
2311 typedef struct DumpState
{
2312 VLANClientState
*pcap_vc
;
2317 #define PCAP_MAGIC 0xa1b2c3d4
2319 struct pcap_file_hdr
{
2321 uint16_t version_major
;
2322 uint16_t version_minor
;
2329 struct pcap_sf_pkthdr
{
2338 static ssize_t
dump_receive(VLANClientState
*vc
, const uint8_t *buf
, size_t size
)
2340 DumpState
*s
= vc
->opaque
;
2341 struct pcap_sf_pkthdr hdr
;
2345 /* Early return in case of previous error. */
2350 ts
= muldiv64(qemu_get_clock(vm_clock
), 1000000, get_ticks_per_sec());
2351 caplen
= size
> s
->pcap_caplen
? s
->pcap_caplen
: size
;
2353 hdr
.ts
.tv_sec
= ts
/ 1000000;
2354 hdr
.ts
.tv_usec
= ts
% 1000000;
2355 hdr
.caplen
= caplen
;
2357 if (write(s
->fd
, &hdr
, sizeof(hdr
)) != sizeof(hdr
) ||
2358 write(s
->fd
, buf
, caplen
) != caplen
) {
2359 qemu_log("-net dump write error - stop dump\n");
2367 static void net_dump_cleanup(VLANClientState
*vc
)
2369 DumpState
*s
= vc
->opaque
;
2375 static int net_dump_init(VLANState
*vlan
, const char *device
,
2376 const char *name
, const char *filename
, int len
)
2378 struct pcap_file_hdr hdr
;
2381 s
= qemu_malloc(sizeof(DumpState
));
2383 s
->fd
= open(filename
, O_CREAT
| O_WRONLY
| O_BINARY
, 0644);
2385 qemu_error("-net dump: can't open %s\n", filename
);
2389 s
->pcap_caplen
= len
;
2391 hdr
.magic
= PCAP_MAGIC
;
2392 hdr
.version_major
= 2;
2393 hdr
.version_minor
= 4;
2396 hdr
.snaplen
= s
->pcap_caplen
;
2399 if (write(s
->fd
, &hdr
, sizeof(hdr
)) < sizeof(hdr
)) {
2400 qemu_error("-net dump write error: %s\n", strerror(errno
));
2406 s
->pcap_vc
= qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP
,
2407 vlan
, NULL
, device
, name
, NULL
,
2409 net_dump_cleanup
, s
);
2410 snprintf(s
->pcap_vc
->info_str
, sizeof(s
->pcap_vc
->info_str
),
2411 "dump to %s (len=%d)", filename
, len
);
2415 /* find or alloc a new VLAN */
2416 VLANState
*qemu_find_vlan(int id
, int allocate
)
2420 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
2421 if (vlan
->id
== id
) {
2430 vlan
= qemu_mallocz(sizeof(VLANState
));
2432 QTAILQ_INIT(&vlan
->clients
);
2434 vlan
->send_queue
= qemu_new_net_queue(qemu_vlan_deliver_packet
,
2435 qemu_vlan_deliver_packet_iov
,
2438 QTAILQ_INSERT_TAIL(&vlans
, vlan
, next
);
2443 VLANClientState
*qemu_find_netdev(const char *id
)
2445 VLANClientState
*vc
;
2447 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
2448 if (!strcmp(vc
->name
, id
)) {
2456 static int nic_get_free_idx(void)
2460 for (index
= 0; index
< MAX_NICS
; index
++)
2461 if (!nd_table
[index
].used
)
2466 int qemu_show_nic_models(const char *arg
, const char *const *models
)
2470 if (!arg
|| strcmp(arg
, "?"))
2473 fprintf(stderr
, "qemu: Supported NIC models: ");
2474 for (i
= 0 ; models
[i
]; i
++)
2475 fprintf(stderr
, "%s%c", models
[i
], models
[i
+1] ? ',' : '\n');
2479 void qemu_check_nic_model(NICInfo
*nd
, const char *model
)
2481 const char *models
[2];
2486 if (qemu_show_nic_models(nd
->model
, models
))
2488 if (qemu_find_nic_model(nd
, models
, model
) < 0)
2492 int qemu_find_nic_model(NICInfo
*nd
, const char * const *models
,
2493 const char *default_model
)
2498 nd
->model
= qemu_strdup(default_model
);
2500 for (i
= 0 ; models
[i
]; i
++) {
2501 if (strcmp(nd
->model
, models
[i
]) == 0)
2505 qemu_error("qemu: Unsupported NIC model: %s\n", nd
->model
);
2509 static int net_handle_fd_param(Monitor
*mon
, const char *param
)
2511 if (!qemu_isdigit(param
[0])) {
2514 fd
= monitor_get_fd(mon
, param
);
2516 qemu_error("No file descriptor named %s found", param
);
2522 return strtol(param
, NULL
, 0);
2526 static int net_init_nic(QemuOpts
*opts
,
2535 idx
= nic_get_free_idx();
2536 if (idx
== -1 || nb_nics
>= MAX_NICS
) {
2537 qemu_error("Too Many NICs\n");
2541 nd
= &nd_table
[idx
];
2543 memset(nd
, 0, sizeof(*nd
));
2545 if ((netdev
= qemu_opt_get(opts
, "netdev"))) {
2546 nd
->netdev
= qemu_find_netdev(netdev
);
2548 qemu_error("netdev '%s' not found\n", netdev
);
2556 nd
->name
= qemu_strdup(name
);
2558 if (qemu_opt_get(opts
, "model")) {
2559 nd
->model
= qemu_strdup(qemu_opt_get(opts
, "model"));
2561 if (qemu_opt_get(opts
, "addr")) {
2562 nd
->devaddr
= qemu_strdup(qemu_opt_get(opts
, "addr"));
2565 nd
->macaddr
[0] = 0x52;
2566 nd
->macaddr
[1] = 0x54;
2567 nd
->macaddr
[2] = 0x00;
2568 nd
->macaddr
[3] = 0x12;
2569 nd
->macaddr
[4] = 0x34;
2570 nd
->macaddr
[5] = 0x56 + idx
;
2572 if (qemu_opt_get(opts
, "macaddr") &&
2573 parse_macaddr(nd
->macaddr
, qemu_opt_get(opts
, "macaddr")) < 0) {
2574 qemu_error("invalid syntax for ethernet address\n");
2578 nd
->nvectors
= qemu_opt_get_number(opts
, "vectors", NIC_NVECTORS_UNSPECIFIED
);
2579 if (nd
->nvectors
!= NIC_NVECTORS_UNSPECIFIED
&&
2580 (nd
->nvectors
< 0 || nd
->nvectors
> 0x7ffffff)) {
2581 qemu_error("invalid # of vectors: %d\n", nd
->nvectors
);
2587 nd
->vlan
->nb_guest_devs
++;
2594 #if defined(CONFIG_SLIRP)
2595 static int net_init_slirp_configs(const char *name
, const char *value
, void *opaque
)
2597 struct slirp_config_str
*config
;
2599 if (strcmp(name
, "hostfwd") != 0 && strcmp(name
, "guestfwd") != 0) {
2603 config
= qemu_mallocz(sizeof(*config
));
2605 pstrcpy(config
->str
, sizeof(config
->str
), value
);
2607 if (!strcmp(name
, "hostfwd")) {
2608 config
->flags
= SLIRP_CFG_HOSTFWD
;
2611 config
->next
= slirp_configs
;
2612 slirp_configs
= config
;
2617 static int net_init_slirp(QemuOpts
*opts
,
2622 struct slirp_config_str
*config
;
2624 const char *vhostname
;
2625 const char *vdhcp_start
;
2626 const char *vnamesrv
;
2627 const char *tftp_export
;
2628 const char *bootfile
;
2629 const char *smb_export
;
2630 const char *vsmbsrv
;
2635 vhost
= qemu_opt_get(opts
, "host");
2636 vhostname
= qemu_opt_get(opts
, "hostname");
2637 vdhcp_start
= qemu_opt_get(opts
, "dhcpstart");
2638 vnamesrv
= qemu_opt_get(opts
, "dns");
2639 tftp_export
= qemu_opt_get(opts
, "tftp");
2640 bootfile
= qemu_opt_get(opts
, "bootfile");
2641 smb_export
= qemu_opt_get(opts
, "smb");
2642 vsmbsrv
= qemu_opt_get(opts
, "smbserver");
2644 if (qemu_opt_get(opts
, "ip")) {
2645 const char *ip
= qemu_opt_get(opts
, "ip");
2646 int l
= strlen(ip
) + strlen("/24") + 1;
2648 vnet
= qemu_malloc(l
);
2650 /* emulate legacy ip= parameter */
2651 pstrcpy(vnet
, l
, ip
);
2652 pstrcat(vnet
, l
, "/24");
2655 if (qemu_opt_get(opts
, "net")) {
2659 vnet
= qemu_strdup(qemu_opt_get(opts
, "net"));
2662 if (qemu_opt_get(opts
, "restrict") &&
2663 qemu_opt_get(opts
, "restrict")[0] == 'y') {
2667 qemu_opt_foreach(opts
, net_init_slirp_configs
, NULL
, 0);
2669 ret
= net_slirp_init(vlan
, "user", name
, restricted
, vnet
, vhost
,
2670 vhostname
, tftp_export
, bootfile
, vdhcp_start
,
2671 vnamesrv
, smb_export
, vsmbsrv
);
2673 while (slirp_configs
) {
2674 config
= slirp_configs
;
2675 slirp_configs
= config
->next
;
2679 if (ret
!= -1 && vlan
) {
2680 vlan
->nb_host_devs
++;
2687 #endif /* CONFIG_SLIRP */
2690 static int net_init_tap_win32(QemuOpts
*opts
,
2697 ifname
= qemu_opt_get(opts
, "ifname");
2700 qemu_error("tap: no interface name\n");
2704 if (tap_win32_init(vlan
, "tap", name
, ifname
) == -1) {
2709 vlan
->nb_host_devs
++;
2714 #elif !defined(_AIX)
2715 static int net_init_tap(QemuOpts
*opts
,
2723 if (qemu_opt_get(opts
, "fd")) {
2724 if (qemu_opt_get(opts
, "ifname") ||
2725 qemu_opt_get(opts
, "script") ||
2726 qemu_opt_get(opts
, "downscript") ||
2727 qemu_opt_get(opts
, "vnet_hdr")) {
2728 qemu_error("ifname=, script=, downscript= and vnet_hdr= is invalid with fd=\n");
2732 fd
= net_handle_fd_param(mon
, qemu_opt_get(opts
, "fd"));
2737 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
2739 vnet_hdr
= tap_probe_vnet_hdr(fd
);
2741 if (!qemu_opt_get(opts
, "script")) {
2742 qemu_opt_set(opts
, "script", DEFAULT_NETWORK_SCRIPT
);
2745 if (!qemu_opt_get(opts
, "downscript")) {
2746 qemu_opt_set(opts
, "downscript", DEFAULT_NETWORK_DOWN_SCRIPT
);
2749 fd
= net_tap_init(opts
, &vnet_hdr
);
2752 s
= net_tap_fd_init(vlan
, "tap", name
, fd
, vnet_hdr
);
2758 if (tap_set_sndbuf(s
, opts
) < 0) {
2762 if (qemu_opt_get(opts
, "fd")) {
2763 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
), "fd=%d", fd
);
2765 const char *ifname
, *script
, *downscript
;
2767 ifname
= qemu_opt_get(opts
, "ifname");
2768 script
= qemu_opt_get(opts
, "script");
2769 downscript
= qemu_opt_get(opts
, "downscript");
2771 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
2772 "ifname=%s,script=%s,downscript=%s",
2773 ifname
, script
, downscript
);
2775 if (strcmp(downscript
, "no") != 0) {
2776 snprintf(s
->down_script
, sizeof(s
->down_script
), "%s", downscript
);
2777 snprintf(s
->down_script_arg
, sizeof(s
->down_script_arg
), "%s", ifname
);
2782 vlan
->nb_host_devs
++;
2789 static int net_init_socket(QemuOpts
*opts
,
2794 if (qemu_opt_get(opts
, "fd")) {
2797 if (qemu_opt_get(opts
, "listen") ||
2798 qemu_opt_get(opts
, "connect") ||
2799 qemu_opt_get(opts
, "mcast")) {
2800 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2804 fd
= net_handle_fd_param(mon
, qemu_opt_get(opts
, "fd"));
2809 if (!net_socket_fd_init(vlan
, "socket", name
, fd
, 1)) {
2813 } else if (qemu_opt_get(opts
, "listen")) {
2816 if (qemu_opt_get(opts
, "fd") ||
2817 qemu_opt_get(opts
, "connect") ||
2818 qemu_opt_get(opts
, "mcast")) {
2819 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2823 listen
= qemu_opt_get(opts
, "listen");
2825 if (net_socket_listen_init(vlan
, "socket", name
, listen
) == -1) {
2828 } else if (qemu_opt_get(opts
, "connect")) {
2829 const char *connect
;
2831 if (qemu_opt_get(opts
, "fd") ||
2832 qemu_opt_get(opts
, "listen") ||
2833 qemu_opt_get(opts
, "mcast")) {
2834 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2838 connect
= qemu_opt_get(opts
, "connect");
2840 if (net_socket_connect_init(vlan
, "socket", name
, connect
) == -1) {
2843 } else if (qemu_opt_get(opts
, "mcast")) {
2846 if (qemu_opt_get(opts
, "fd") ||
2847 qemu_opt_get(opts
, "connect") ||
2848 qemu_opt_get(opts
, "listen")) {
2849 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
2853 mcast
= qemu_opt_get(opts
, "mcast");
2855 if (net_socket_mcast_init(vlan
, "socket", name
, mcast
) == -1) {
2859 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
2864 vlan
->nb_host_devs
++;
2871 static int net_init_vde(QemuOpts
*opts
,
2880 sock
= qemu_opt_get(opts
, "sock");
2881 group
= qemu_opt_get(opts
, "group");
2883 port
= qemu_opt_get_number(opts
, "port", 0);
2884 mode
= qemu_opt_get_number(opts
, "mode", 0700);
2886 if (net_vde_init(vlan
, "vde", name
, sock
, port
, group
, mode
) == -1) {
2891 vlan
->nb_host_devs
++;
2898 static int net_init_dump(QemuOpts
*opts
,
2909 file
= qemu_opt_get(opts
, "file");
2911 snprintf(def_file
, sizeof(def_file
), "qemu-vlan%d.pcap", vlan
->id
);
2915 len
= qemu_opt_get_size(opts
, "len", 65536);
2917 return net_dump_init(vlan
, "dump", name
, file
, len
);
2920 #define NET_COMMON_PARAMS_DESC \
2923 .type = QEMU_OPT_STRING, \
2924 .help = "net client type (nic, tap etc.)", \
2927 .type = QEMU_OPT_NUMBER, \
2928 .help = "vlan number", \
2931 .type = QEMU_OPT_STRING, \
2932 .help = "identifier for monitor commands", \
2935 typedef int (*net_client_init_func
)(QemuOpts
*opts
,
2940 /* magic number, but compiler will warn if too small */
2941 #define NET_MAX_DESC 20
2945 net_client_init_func init
;
2946 QemuOptDesc desc
[NET_MAX_DESC
];
2947 } net_client_types
[] = {
2951 NET_COMMON_PARAMS_DESC
,
2952 { /* end of list */ }
2956 .init
= net_init_nic
,
2958 NET_COMMON_PARAMS_DESC
,
2961 .type
= QEMU_OPT_STRING
,
2962 .help
= "id of -netdev to connect to",
2966 .type
= QEMU_OPT_STRING
,
2967 .help
= "MAC address",
2970 .type
= QEMU_OPT_STRING
,
2971 .help
= "device model (e1000, rtl8139, virtio etc.)",
2974 .type
= QEMU_OPT_STRING
,
2975 .help
= "PCI device address",
2978 .type
= QEMU_OPT_NUMBER
,
2979 .help
= "number of MSI-x vectors, 0 to disable MSI-X",
2981 { /* end of list */ }
2986 .init
= net_init_slirp
,
2988 NET_COMMON_PARAMS_DESC
,
2991 .type
= QEMU_OPT_STRING
,
2992 .help
= "client hostname reported by the builtin DHCP server",
2995 .type
= QEMU_OPT_STRING
,
2996 .help
= "isolate the guest from the host (y|yes|n|no)",
2999 .type
= QEMU_OPT_STRING
,
3000 .help
= "legacy parameter, use net= instead",
3003 .type
= QEMU_OPT_STRING
,
3004 .help
= "IP address and optional netmask",
3007 .type
= QEMU_OPT_STRING
,
3008 .help
= "guest-visible address of the host",
3011 .type
= QEMU_OPT_STRING
,
3012 .help
= "root directory of the built-in TFTP server",
3015 .type
= QEMU_OPT_STRING
,
3016 .help
= "BOOTP filename, for use with tftp=",
3018 .name
= "dhcpstart",
3019 .type
= QEMU_OPT_STRING
,
3020 .help
= "the first of the 16 IPs the built-in DHCP server can assign",
3023 .type
= QEMU_OPT_STRING
,
3024 .help
= "guest-visible address of the virtual nameserver",
3027 .type
= QEMU_OPT_STRING
,
3028 .help
= "root directory of the built-in SMB server",
3030 .name
= "smbserver",
3031 .type
= QEMU_OPT_STRING
,
3032 .help
= "IP address of the built-in SMB server",
3035 .type
= QEMU_OPT_STRING
,
3036 .help
= "guest port number to forward incoming TCP or UDP connections",
3039 .type
= QEMU_OPT_STRING
,
3040 .help
= "IP address and port to forward guest TCP connections",
3042 { /* end of list */ }
3048 .init
= net_init_tap_win32
,
3050 NET_COMMON_PARAMS_DESC
,
3053 .type
= QEMU_OPT_STRING
,
3054 .help
= "interface name",
3056 { /* end of list */ }
3058 #elif !defined(_AIX)
3061 .init
= net_init_tap
,
3063 NET_COMMON_PARAMS_DESC
,
3066 .type
= QEMU_OPT_STRING
,
3067 .help
= "file descriptor of an already opened tap",
3070 .type
= QEMU_OPT_STRING
,
3071 .help
= "interface name",
3074 .type
= QEMU_OPT_STRING
,
3075 .help
= "script to initialize the interface",
3077 .name
= "downscript",
3078 .type
= QEMU_OPT_STRING
,
3079 .help
= "script to shut down the interface",
3082 .type
= QEMU_OPT_SIZE
,
3083 .help
= "send buffer limit"
3086 .type
= QEMU_OPT_BOOL
,
3087 .help
= "enable the IFF_VNET_HDR flag on the tap interface"
3089 { /* end of list */ }
3094 .init
= net_init_socket
,
3096 NET_COMMON_PARAMS_DESC
,
3099 .type
= QEMU_OPT_STRING
,
3100 .help
= "file descriptor of an already opened socket",
3103 .type
= QEMU_OPT_STRING
,
3104 .help
= "port number, and optional hostname, to listen on",
3107 .type
= QEMU_OPT_STRING
,
3108 .help
= "port number, and optional hostname, to connect to",
3111 .type
= QEMU_OPT_STRING
,
3112 .help
= "UDP multicast address and port number",
3114 { /* end of list */ }
3119 .init
= net_init_vde
,
3121 NET_COMMON_PARAMS_DESC
,
3124 .type
= QEMU_OPT_STRING
,
3125 .help
= "socket path",
3128 .type
= QEMU_OPT_NUMBER
,
3129 .help
= "port number",
3132 .type
= QEMU_OPT_STRING
,
3133 .help
= "group owner of socket",
3136 .type
= QEMU_OPT_NUMBER
,
3137 .help
= "permissions for socket",
3139 { /* end of list */ }
3144 .init
= net_init_dump
,
3146 NET_COMMON_PARAMS_DESC
,
3149 .type
= QEMU_OPT_SIZE
,
3150 .help
= "per-packet size limit (64k default)",
3153 .type
= QEMU_OPT_STRING
,
3154 .help
= "dump file path (default is qemu-vlan0.pcap)",
3156 { /* end of list */ }
3159 { /* end of list */ }
3162 int net_client_init(Monitor
*mon
, QemuOpts
*opts
, int is_netdev
)
3168 type
= qemu_opt_get(opts
, "type");
3170 qemu_error("No type specified for -net\n");
3175 if (strcmp(type
, "tap") != 0 &&
3177 strcmp(type
, "user") != 0 &&
3180 strcmp(type
, "vde") != 0 &&
3182 strcmp(type
, "socket") != 0) {
3183 qemu_error("The '%s' network backend type is not valid with -netdev\n",
3188 if (qemu_opt_get(opts
, "vlan")) {
3189 qemu_error("The 'vlan' parameter is not valid with -netdev\n");
3192 if (qemu_opt_get(opts
, "name")) {
3193 qemu_error("The 'name' parameter is not valid with -netdev\n");
3196 if (!qemu_opts_id(opts
)) {
3197 qemu_error("The id= parameter is required with -netdev\n");
3202 name
= qemu_opts_id(opts
);
3204 name
= qemu_opt_get(opts
, "name");
3207 for (i
= 0; net_client_types
[i
].type
!= NULL
; i
++) {
3208 if (!strcmp(net_client_types
[i
].type
, type
)) {
3209 VLANState
*vlan
= NULL
;
3211 if (qemu_opts_validate(opts
, &net_client_types
[i
].desc
[0]) == -1) {
3215 /* Do not add to a vlan if it's a -netdev or a nic with a
3216 * netdev= parameter. */
3218 (strcmp(type
, "nic") == 0 && qemu_opt_get(opts
, "netdev")))) {
3219 vlan
= qemu_find_vlan(qemu_opt_get_number(opts
, "vlan", 0), 1);
3222 if (net_client_types
[i
].init
) {
3223 return net_client_types
[i
].init(opts
, mon
, name
, vlan
);
3230 qemu_error("Invalid -net type '%s'\n", type
);
3234 void net_client_uninit(NICInfo
*nd
)
3237 nd
->vlan
->nb_guest_devs
--;
3241 qemu_free(nd
->model
);
3242 qemu_free(nd
->name
);
3243 qemu_free(nd
->devaddr
);
3248 static int net_host_check_device(const char *device
)
3251 const char *valid_param_list
[] = { "tap", "socket", "dump"
3259 for (i
= 0; i
< sizeof(valid_param_list
) / sizeof(char *); i
++) {
3260 if (!strncmp(valid_param_list
[i
], device
,
3261 strlen(valid_param_list
[i
])))
3268 void net_host_device_add(Monitor
*mon
, const QDict
*qdict
)
3270 const char *device
= qdict_get_str(qdict
, "device");
3271 const char *opts_str
= qdict_get_try_str(qdict
, "opts");
3274 if (!net_host_check_device(device
)) {
3275 monitor_printf(mon
, "invalid host network device %s\n", device
);
3279 opts
= qemu_opts_parse(&qemu_net_opts
, opts_str
? opts_str
: "", NULL
);
3281 monitor_printf(mon
, "parsing network options '%s' failed\n",
3282 opts_str
? opts_str
: "");
3286 qemu_opt_set(opts
, "type", device
);
3288 if (net_client_init(mon
, opts
, 0) < 0) {
3289 monitor_printf(mon
, "adding host network device %s failed\n", device
);
3293 void net_host_device_remove(Monitor
*mon
, const QDict
*qdict
)
3295 VLANClientState
*vc
;
3296 int vlan_id
= qdict_get_int(qdict
, "vlan_id");
3297 const char *device
= qdict_get_str(qdict
, "device");
3299 vc
= qemu_find_vlan_client_by_name(mon
, vlan_id
, device
);
3303 if (!net_host_check_device(vc
->model
)) {
3304 monitor_printf(mon
, "invalid host network device %s\n", device
);
3307 qemu_del_vlan_client(vc
);
3310 void net_set_boot_mask(int net_boot_mask
)
3314 /* Only the first four NICs may be bootable */
3315 net_boot_mask
= net_boot_mask
& 0xF;
3317 for (i
= 0; i
< nb_nics
; i
++) {
3318 if (net_boot_mask
& (1 << i
)) {
3319 nd_table
[i
].bootable
= 1;
3320 net_boot_mask
&= ~(1 << i
);
3324 if (net_boot_mask
) {
3325 fprintf(stderr
, "Cannot boot from non-existent NIC\n");
3330 void do_info_network(Monitor
*mon
)
3334 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3335 VLANClientState
*vc
;
3337 monitor_printf(mon
, "VLAN %d devices:\n", vlan
->id
);
3339 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
3340 monitor_printf(mon
, " %s: %s\n", vc
->name
, vc
->info_str
);
3345 void do_set_link(Monitor
*mon
, const QDict
*qdict
)
3348 VLANClientState
*vc
= NULL
;
3349 const char *name
= qdict_get_str(qdict
, "name");
3350 const char *up_or_down
= qdict_get_str(qdict
, "up_or_down");
3352 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3353 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
3354 if (strcmp(vc
->name
, name
) == 0) {
3362 monitor_printf(mon
, "could not find network device '%s'\n", name
);
3366 if (strcmp(up_or_down
, "up") == 0)
3368 else if (strcmp(up_or_down
, "down") == 0)
3371 monitor_printf(mon
, "invalid link status '%s'; only 'up' or 'down' "
3372 "valid\n", up_or_down
);
3374 if (vc
->link_status_changed
)
3375 vc
->link_status_changed(vc
);
3378 void net_cleanup(void)
3381 VLANClientState
*vc
, *next_vc
;
3383 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3384 QTAILQ_FOREACH_SAFE(vc
, &vlan
->clients
, next
, next_vc
) {
3385 qemu_del_vlan_client(vc
);
3389 QTAILQ_FOREACH_SAFE(vc
, &non_vlan_clients
, next
, next_vc
) {
3390 qemu_del_vlan_client(vc
);
3394 static void net_check_clients(void)
3398 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
3399 if (vlan
->nb_guest_devs
== 0 && vlan
->nb_host_devs
== 0)
3401 if (vlan
->nb_guest_devs
== 0)
3402 fprintf(stderr
, "Warning: vlan %d with no nics\n", vlan
->id
);
3403 if (vlan
->nb_host_devs
== 0)
3405 "Warning: vlan %d is not connected to host network\n",
3410 static int net_init_client(QemuOpts
*opts
, void *dummy
)
3412 if (net_client_init(NULL
, opts
, 0) < 0)
3417 static int net_init_netdev(QemuOpts
*opts
, void *dummy
)
3419 return net_client_init(NULL
, opts
, 1);
3422 int net_init_clients(void)
3424 if (QTAILQ_EMPTY(&qemu_net_opts
.head
)) {
3425 /* if no clients, we use a default config */
3426 qemu_opts_set(&qemu_net_opts
, NULL
, "type", "nic");
3428 qemu_opts_set(&qemu_net_opts
, NULL
, "type", "user");
3432 QTAILQ_INIT(&vlans
);
3433 QTAILQ_INIT(&non_vlan_clients
);
3435 if (qemu_opts_foreach(&qemu_netdev_opts
, net_init_netdev
, NULL
, 1) == -1)
3438 if (qemu_opts_foreach(&qemu_net_opts
, net_init_client
, NULL
, 1) == -1) {
3442 net_check_clients();
3447 int net_client_parse(QemuOptsList
*opts_list
, const char *optarg
)
3449 #if defined(CONFIG_SLIRP)
3450 /* handle legacy -net channel,port:chr */
3451 if (!strcmp(opts_list
->name
, "net") &&
3452 !strncmp(optarg
, "channel,", strlen("channel,"))) {
3455 optarg
+= strlen("channel,");
3457 if (QTAILQ_EMPTY(&slirp_stacks
)) {
3458 struct slirp_config_str
*config
;
3460 config
= qemu_malloc(sizeof(*config
));
3461 pstrcpy(config
->str
, sizeof(config
->str
), optarg
);
3462 config
->flags
= SLIRP_CFG_LEGACY
;
3463 config
->next
= slirp_configs
;
3464 slirp_configs
= config
;
3467 ret
= slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks
), optarg
, 1);
3473 if (!qemu_opts_parse(opts_list
, optarg
, "type")) {