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 _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>
106 #include <sys/timeb.h>
107 #include <mmsystem.h>
108 #define getopt_long_only getopt_long
109 #define memalign(align, size) malloc(size)
112 #include "qemu-common.h"
116 #include "qemu-timer.h"
117 #include "qemu-char.h"
118 #include "audio/audio.h"
119 #include "qemu_socket.h"
121 #if defined(CONFIG_SLIRP)
122 #include "libslirp.h"
126 static VLANState
*first_vlan
;
128 /***********************************************************/
129 /* network device redirectors */
131 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
132 static void hex_dump(FILE *f
, const uint8_t *buf
, int size
)
136 for(i
=0;i
<size
;i
+=16) {
140 fprintf(f
, "%08x ", i
);
143 fprintf(f
, " %02x", buf
[i
+j
]);
150 if (c
< ' ' || c
> '~')
159 static int parse_macaddr(uint8_t *macaddr
, const char *p
)
166 offset
= strtol(p
, &last_char
, 0);
167 if (0 == errno
&& '\0' == *last_char
&&
168 offset
>= 0 && offset
<= 0xFFFFFF) {
169 macaddr
[3] = (offset
& 0xFF0000) >> 16;
170 macaddr
[4] = (offset
& 0xFF00) >> 8;
171 macaddr
[5] = offset
& 0xFF;
174 for(i
= 0; i
< 6; i
++) {
175 macaddr
[i
] = strtol(p
, (char **)&p
, 16);
180 if (*p
!= ':' && *p
!= '-')
191 static int get_str_sep(char *buf
, int buf_size
, const char **pp
, int sep
)
202 if (len
> buf_size
- 1)
211 int parse_host_src_port(struct sockaddr_in
*haddr
,
212 struct sockaddr_in
*saddr
,
213 const char *input_str
)
215 char *str
= strdup(input_str
);
216 char *host_str
= str
;
218 const char *src_str2
;
222 * Chop off any extra arguments at the end of the string which
223 * would start with a comma, then fill in the src port information
224 * if it was provided else use the "any address" and "any port".
226 if ((ptr
= strchr(str
,',')))
229 if ((src_str
= strchr(input_str
,'@'))) {
234 if (parse_host_port(haddr
, host_str
) < 0)
238 if (!src_str
|| *src_str
== '\0')
241 if (parse_host_port(saddr
, src_str2
) < 0)
252 int parse_host_port(struct sockaddr_in
*saddr
, const char *str
)
260 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
262 saddr
->sin_family
= AF_INET
;
263 if (buf
[0] == '\0') {
264 saddr
->sin_addr
.s_addr
= 0;
266 if (qemu_isdigit(buf
[0])) {
267 if (!inet_aton(buf
, &saddr
->sin_addr
))
270 if ((he
= gethostbyname(buf
)) == NULL
)
272 saddr
->sin_addr
= *(struct in_addr
*)he
->h_addr
;
275 port
= strtol(p
, (char **)&r
, 0);
278 saddr
->sin_port
= htons(port
);
282 #if !defined(_WIN32) && 0
283 static int parse_unix_path(struct sockaddr_un
*uaddr
, const char *str
)
288 len
= MIN(108, strlen(str
));
289 p
= strchr(str
, ',');
291 len
= MIN(len
, p
- str
);
293 memset(uaddr
, 0, sizeof(*uaddr
));
295 uaddr
->sun_family
= AF_UNIX
;
296 memcpy(uaddr
->sun_path
, str
, len
);
302 void qemu_format_nic_info_str(VLANClientState
*vc
, uint8_t macaddr
[6])
304 snprintf(vc
->info_str
, sizeof(vc
->info_str
),
305 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
307 macaddr
[0], macaddr
[1], macaddr
[2],
308 macaddr
[3], macaddr
[4], macaddr
[5]);
311 static char *assign_name(VLANClientState
*vc1
, const char *model
)
317 for (vlan
= first_vlan
; vlan
; vlan
= vlan
->next
) {
320 for (vc
= vlan
->first_client
; vc
; vc
= vc
->next
)
321 if (vc
!= vc1
&& strcmp(vc
->model
, model
) == 0)
325 snprintf(buf
, sizeof(buf
), "%s.%d", model
, id
);
330 VLANClientState
*qemu_new_vlan_client(VLANState
*vlan
,
333 IOReadHandler
*fd_read
,
334 IOCanRWHandler
*fd_can_read
,
337 VLANClientState
*vc
, **pvc
;
338 vc
= qemu_mallocz(sizeof(VLANClientState
));
339 vc
->model
= strdup(model
);
341 vc
->name
= strdup(name
);
343 vc
->name
= assign_name(vc
, model
);
344 vc
->fd_read
= fd_read
;
345 vc
->fd_can_read
= fd_can_read
;
350 pvc
= &vlan
->first_client
;
357 void qemu_del_vlan_client(VLANClientState
*vc
)
359 VLANClientState
**pvc
= &vc
->vlan
->first_client
;
372 VLANClientState
*qemu_find_vlan_client(VLANState
*vlan
, void *opaque
)
374 VLANClientState
**pvc
= &vlan
->first_client
;
377 if ((*pvc
)->opaque
== opaque
)
385 int qemu_can_send_packet(VLANClientState
*vc1
)
387 VLANState
*vlan
= vc1
->vlan
;
390 for(vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
) {
392 if (vc
->fd_can_read
&& vc
->fd_can_read(vc
->opaque
))
399 void qemu_send_packet(VLANClientState
*vc1
, const uint8_t *buf
, int size
)
401 VLANState
*vlan
= vc1
->vlan
;
408 printf("vlan %d send:\n", vlan
->id
);
409 hex_dump(stdout
, buf
, size
);
411 for(vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
) {
412 if (vc
!= vc1
&& !vc
->link_down
) {
413 vc
->fd_read(vc
->opaque
, buf
, size
);
418 static ssize_t
vc_sendv_compat(VLANClientState
*vc
, const struct iovec
*iov
,
421 uint8_t buffer
[4096];
425 for (i
= 0; i
< iovcnt
; i
++) {
428 len
= MIN(sizeof(buffer
) - offset
, iov
[i
].iov_len
);
429 memcpy(buffer
+ offset
, iov
[i
].iov_base
, len
);
433 vc
->fd_read(vc
->opaque
, buffer
, offset
);
438 static ssize_t
calc_iov_length(const struct iovec
*iov
, int iovcnt
)
443 for (i
= 0; i
< iovcnt
; i
++)
444 offset
+= iov
[i
].iov_len
;
448 ssize_t
qemu_sendv_packet(VLANClientState
*vc1
, const struct iovec
*iov
,
451 VLANState
*vlan
= vc1
->vlan
;
456 return calc_iov_length(iov
, iovcnt
);
458 for (vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
) {
465 len
= calc_iov_length(iov
, iovcnt
);
467 len
= vc
->fd_readv(vc
->opaque
, iov
, iovcnt
);
468 else if (vc
->fd_read
)
469 len
= vc_sendv_compat(vc
, iov
, iovcnt
);
471 max_len
= MAX(max_len
, len
);
477 #if defined(CONFIG_SLIRP)
479 /* slirp network adapter */
481 static int slirp_inited
;
482 static int slirp_restrict
;
483 static char *slirp_ip
;
484 static VLANClientState
*slirp_vc
;
486 int slirp_can_output(void)
488 return !slirp_vc
|| qemu_can_send_packet(slirp_vc
);
491 void slirp_output(const uint8_t *pkt
, int pkt_len
)
494 printf("slirp output:\n");
495 hex_dump(stdout
, pkt
, pkt_len
);
499 qemu_send_packet(slirp_vc
, pkt
, pkt_len
);
502 int slirp_is_inited(void)
507 static void slirp_receive(void *opaque
, const uint8_t *buf
, int size
)
510 printf("slirp input:\n");
511 hex_dump(stdout
, buf
, size
);
513 slirp_input(buf
, size
);
516 static int net_slirp_init(VLANState
*vlan
, const char *model
, const char *name
)
520 slirp_init(slirp_restrict
, slirp_ip
);
522 slirp_vc
= qemu_new_vlan_client(vlan
, model
, name
,
523 slirp_receive
, NULL
, NULL
);
524 slirp_vc
->info_str
[0] = '\0';
528 void net_slirp_redir(const char *redir_str
)
533 struct in_addr guest_addr
;
534 int host_port
, guest_port
;
538 slirp_init(slirp_restrict
, slirp_ip
);
542 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
544 if (!strcmp(buf
, "tcp")) {
546 } else if (!strcmp(buf
, "udp")) {
552 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
554 host_port
= strtol(buf
, &r
, 0);
558 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
560 if (buf
[0] == '\0') {
561 pstrcpy(buf
, sizeof(buf
), "10.0.2.15");
563 if (!inet_aton(buf
, &guest_addr
))
566 guest_port
= strtol(p
, &r
, 0);
570 if (slirp_redir(is_udp
, host_port
, guest_addr
, guest_port
) < 0) {
571 fprintf(stderr
, "qemu: could not set up redirection\n");
576 fprintf(stderr
, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
582 static char smb_dir
[1024];
584 static void erase_dir(char *dir_name
)
590 /* erase all the files in the directory */
591 if ((d
= opendir(dir_name
)) != NULL
) {
596 if (strcmp(de
->d_name
, ".") != 0 &&
597 strcmp(de
->d_name
, "..") != 0) {
598 snprintf(filename
, sizeof(filename
), "%s/%s",
599 smb_dir
, de
->d_name
);
600 if (unlink(filename
) != 0) /* is it a directory? */
609 /* automatic user mode samba server configuration */
610 static void smb_exit(void)
615 /* automatic user mode samba server configuration */
616 void net_slirp_smb(const char *exported_dir
)
619 char smb_cmdline
[1024];
624 slirp_init(slirp_restrict
, slirp_ip
);
627 /* XXX: better tmp dir construction */
628 snprintf(smb_dir
, sizeof(smb_dir
), "/tmp/qemu-smb.%d", getpid());
629 if (mkdir(smb_dir
, 0700) < 0) {
630 fprintf(stderr
, "qemu: could not create samba server dir '%s'\n", smb_dir
);
633 snprintf(smb_conf
, sizeof(smb_conf
), "%s/%s", smb_dir
, "smb.conf");
635 f
= fopen(smb_conf
, "w");
637 fprintf(stderr
, "qemu: could not create samba server configuration file '%s'\n", smb_conf
);
644 "socket address=127.0.0.1\n"
646 "lock directory=%s\n"
647 "log file=%s/log.smbd\n"
648 "smb passwd file=%s/smbpasswd\n"
664 snprintf(smb_cmdline
, sizeof(smb_cmdline
), "%s -s %s",
665 SMBD_COMMAND
, smb_conf
);
667 slirp_add_exec(0, smb_cmdline
, 4, 139);
670 #endif /* !defined(_WIN32) */
671 void do_info_slirp(Monitor
*mon
)
681 static int vmchannel_can_read(void *opaque
)
683 struct VMChannel
*vmc
= (struct VMChannel
*)opaque
;
684 return slirp_socket_can_recv(4, vmc
->port
);
687 static void vmchannel_read(void *opaque
, const uint8_t *buf
, int size
)
689 struct VMChannel
*vmc
= (struct VMChannel
*)opaque
;
690 slirp_socket_recv(4, vmc
->port
, buf
, size
);
693 #endif /* CONFIG_SLIRP */
697 typedef struct TAPState
{
700 char down_script
[1024];
701 char down_script_arg
[128];
705 static ssize_t
tap_receive_iov(void *opaque
, const struct iovec
*iov
,
708 TAPState
*s
= opaque
;
712 len
= writev(s
->fd
, iov
, iovcnt
);
713 } while (len
== -1 && (errno
== EINTR
|| errno
== EAGAIN
));
719 static void tap_receive(void *opaque
, const uint8_t *buf
, int size
)
721 TAPState
*s
= opaque
;
724 ret
= write(s
->fd
, buf
, size
);
725 if (ret
< 0 && (errno
== EINTR
|| errno
== EAGAIN
)) {
732 static void tap_send(void *opaque
)
734 TAPState
*s
= opaque
;
741 sbuf
.maxlen
= sizeof(buf
);
743 size
= getmsg(s
->fd
, NULL
, &sbuf
, &f
) >=0 ? sbuf
.len
: -1;
745 size
= read(s
->fd
, buf
, sizeof(buf
));
748 qemu_send_packet(s
->vc
, buf
, size
);
754 static TAPState
*net_tap_fd_init(VLANState
*vlan
,
761 s
= qemu_mallocz(sizeof(TAPState
));
763 s
->vc
= qemu_new_vlan_client(vlan
, model
, name
, tap_receive
, NULL
, s
);
765 s
->vc
->fd_readv
= tap_receive_iov
;
767 qemu_set_fd_handler(s
->fd
, tap_send
, NULL
, s
);
768 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
), "fd=%d", fd
);
772 #if defined (_BSD) || defined (__FreeBSD_kernel__)
773 static int tap_open(char *ifname
, int ifname_size
)
779 TFR(fd
= open("/dev/tap", O_RDWR
));
781 fprintf(stderr
, "warning: could not open /dev/tap: no virtual network emulation\n");
786 dev
= devname(s
.st_rdev
, S_IFCHR
);
787 pstrcpy(ifname
, ifname_size
, dev
);
789 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
792 #elif defined(__sun__)
793 #define TUNNEWPPA (('T'<<16) | 0x0001)
795 * Allocate TAP device, returns opened fd.
796 * Stores dev name in the first arg(must be large enough).
798 int tap_alloc(char *dev
, size_t dev_size
)
800 int tap_fd
, if_fd
, ppa
= -1;
801 static int ip_fd
= 0;
804 static int arp_fd
= 0;
805 int ip_muxid
, arp_muxid
;
806 struct strioctl strioc_if
, strioc_ppa
;
807 int link_type
= I_PLINK
;;
809 char actual_name
[32] = "";
811 memset(&ifr
, 0x0, sizeof(ifr
));
815 while( *ptr
&& !qemu_isdigit((int)*ptr
) ) ptr
++;
819 /* Check if IP device was opened */
823 TFR(ip_fd
= open("/dev/udp", O_RDWR
, 0));
825 syslog(LOG_ERR
, "Can't open /dev/ip (actually /dev/udp)");
829 TFR(tap_fd
= open("/dev/tap", O_RDWR
, 0));
831 syslog(LOG_ERR
, "Can't open /dev/tap");
835 /* Assign a new PPA and get its unit number. */
836 strioc_ppa
.ic_cmd
= TUNNEWPPA
;
837 strioc_ppa
.ic_timout
= 0;
838 strioc_ppa
.ic_len
= sizeof(ppa
);
839 strioc_ppa
.ic_dp
= (char *)&ppa
;
840 if ((ppa
= ioctl (tap_fd
, I_STR
, &strioc_ppa
)) < 0)
841 syslog (LOG_ERR
, "Can't assign new interface");
843 TFR(if_fd
= open("/dev/tap", O_RDWR
, 0));
845 syslog(LOG_ERR
, "Can't open /dev/tap (2)");
848 if(ioctl(if_fd
, I_PUSH
, "ip") < 0){
849 syslog(LOG_ERR
, "Can't push IP module");
853 if (ioctl(if_fd
, SIOCGLIFFLAGS
, &ifr
) < 0)
854 syslog(LOG_ERR
, "Can't get flags\n");
856 snprintf (actual_name
, 32, "tap%d", ppa
);
857 pstrcpy(ifr
.lifr_name
, sizeof(ifr
.lifr_name
), actual_name
);
860 /* Assign ppa according to the unit number returned by tun device */
862 if (ioctl (if_fd
, SIOCSLIFNAME
, &ifr
) < 0)
863 syslog (LOG_ERR
, "Can't set PPA %d", ppa
);
864 if (ioctl(if_fd
, SIOCGLIFFLAGS
, &ifr
) <0)
865 syslog (LOG_ERR
, "Can't get flags\n");
866 /* Push arp module to if_fd */
867 if (ioctl (if_fd
, I_PUSH
, "arp") < 0)
868 syslog (LOG_ERR
, "Can't push ARP module (2)");
870 /* Push arp module to ip_fd */
871 if (ioctl (ip_fd
, I_POP
, NULL
) < 0)
872 syslog (LOG_ERR
, "I_POP failed\n");
873 if (ioctl (ip_fd
, I_PUSH
, "arp") < 0)
874 syslog (LOG_ERR
, "Can't push ARP module (3)\n");
876 TFR(arp_fd
= open ("/dev/tap", O_RDWR
, 0));
878 syslog (LOG_ERR
, "Can't open %s\n", "/dev/tap");
880 /* Set ifname to arp */
881 strioc_if
.ic_cmd
= SIOCSLIFNAME
;
882 strioc_if
.ic_timout
= 0;
883 strioc_if
.ic_len
= sizeof(ifr
);
884 strioc_if
.ic_dp
= (char *)&ifr
;
885 if (ioctl(arp_fd
, I_STR
, &strioc_if
) < 0){
886 syslog (LOG_ERR
, "Can't set ifname to arp\n");
889 if((ip_muxid
= ioctl(ip_fd
, I_LINK
, if_fd
)) < 0){
890 syslog(LOG_ERR
, "Can't link TAP device to IP");
894 if ((arp_muxid
= ioctl (ip_fd
, link_type
, arp_fd
)) < 0)
895 syslog (LOG_ERR
, "Can't link TAP device to ARP");
899 memset(&ifr
, 0x0, sizeof(ifr
));
900 pstrcpy(ifr
.lifr_name
, sizeof(ifr
.lifr_name
), actual_name
);
901 ifr
.lifr_ip_muxid
= ip_muxid
;
902 ifr
.lifr_arp_muxid
= arp_muxid
;
904 if (ioctl (ip_fd
, SIOCSLIFMUXID
, &ifr
) < 0)
906 ioctl (ip_fd
, I_PUNLINK
, arp_muxid
);
907 ioctl (ip_fd
, I_PUNLINK
, ip_muxid
);
908 syslog (LOG_ERR
, "Can't set multiplexor id");
911 snprintf(dev
, dev_size
, "tap%d", ppa
);
915 static int tap_open(char *ifname
, int ifname_size
)
919 if( (fd
= tap_alloc(dev
, sizeof(dev
))) < 0 ){
920 fprintf(stderr
, "Cannot allocate TAP device\n");
923 pstrcpy(ifname
, ifname_size
, dev
);
924 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
928 static int tap_open(char *ifname
, int ifname_size
)
930 fprintf (stderr
, "no tap on AIX\n");
934 static int tap_open(char *ifname
, int ifname_size
)
939 TFR(fd
= open("/dev/net/tun", O_RDWR
));
941 fprintf(stderr
, "warning: could not open /dev/net/tun: no virtual network emulation\n");
944 memset(&ifr
, 0, sizeof(ifr
));
945 ifr
.ifr_flags
= IFF_TAP
| IFF_NO_PI
;
946 if (ifname
[0] != '\0')
947 pstrcpy(ifr
.ifr_name
, IFNAMSIZ
, ifname
);
949 pstrcpy(ifr
.ifr_name
, IFNAMSIZ
, "tap%d");
950 ret
= ioctl(fd
, TUNSETIFF
, (void *) &ifr
);
952 fprintf(stderr
, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
956 pstrcpy(ifname
, ifname_size
, ifr
.ifr_name
);
957 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
962 static int launch_script(const char *setup_script
, const char *ifname
, int fd
)
968 /* try to launch network script */
972 int open_max
= sysconf (_SC_OPEN_MAX
), i
;
973 for (i
= 0; i
< open_max
; i
++)
974 if (i
!= STDIN_FILENO
&&
975 i
!= STDOUT_FILENO
&&
976 i
!= STDERR_FILENO
&&
981 *parg
++ = (char *)setup_script
;
982 *parg
++ = (char *)ifname
;
984 execv(setup_script
, args
);
987 while (waitpid(pid
, &status
, 0) != pid
);
988 if (!WIFEXITED(status
) ||
989 WEXITSTATUS(status
) != 0) {
990 fprintf(stderr
, "%s: could not launch network script\n",
998 static int net_tap_init(VLANState
*vlan
, const char *model
,
999 const char *name
, const char *ifname1
,
1000 const char *setup_script
, const char *down_script
)
1006 if (ifname1
!= NULL
)
1007 pstrcpy(ifname
, sizeof(ifname
), ifname1
);
1010 TFR(fd
= tap_open(ifname
, sizeof(ifname
)));
1014 if (!setup_script
|| !strcmp(setup_script
, "no"))
1016 if (setup_script
[0] != '\0') {
1017 if (launch_script(setup_script
, ifname
, fd
))
1020 s
= net_tap_fd_init(vlan
, model
, name
, fd
);
1023 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
1024 "ifname=%s,script=%s,downscript=%s",
1025 ifname
, setup_script
, down_script
);
1026 if (down_script
&& strcmp(down_script
, "no")) {
1027 snprintf(s
->down_script
, sizeof(s
->down_script
), "%s", down_script
);
1028 snprintf(s
->down_script_arg
, sizeof(s
->down_script_arg
), "%s", ifname
);
1033 #endif /* !_WIN32 */
1035 #if defined(CONFIG_VDE)
1036 typedef struct VDEState
{
1037 VLANClientState
*vc
;
1041 static void vde_to_qemu(void *opaque
)
1043 VDEState
*s
= opaque
;
1047 size
= vde_recv(s
->vde
, buf
, sizeof(buf
), 0);
1049 qemu_send_packet(s
->vc
, buf
, size
);
1053 static void vde_from_qemu(void *opaque
, const uint8_t *buf
, int size
)
1055 VDEState
*s
= opaque
;
1058 ret
= vde_send(s
->vde
, buf
, size
, 0);
1059 if (ret
< 0 && errno
== EINTR
) {
1066 static int net_vde_init(VLANState
*vlan
, const char *model
,
1067 const char *name
, const char *sock
,
1068 int port
, const char *group
, int mode
)
1071 char *init_group
= strlen(group
) ? (char *)group
: NULL
;
1072 char *init_sock
= strlen(sock
) ? (char *)sock
: NULL
;
1074 struct vde_open_args args
= {
1076 .group
= init_group
,
1080 s
= qemu_mallocz(sizeof(VDEState
));
1081 s
->vde
= vde_open(init_sock
, "QEMU", &args
);
1086 s
->vc
= qemu_new_vlan_client(vlan
, model
, name
, vde_from_qemu
, NULL
, s
);
1087 qemu_set_fd_handler(vde_datafd(s
->vde
), vde_to_qemu
, NULL
, s
);
1088 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
), "sock=%s,fd=%d",
1089 sock
, vde_datafd(s
->vde
));
1094 /* network connection */
1095 typedef struct NetSocketState
{
1096 VLANClientState
*vc
;
1098 int state
; /* 0 = getting length, 1 = getting data */
1100 unsigned int packet_len
;
1102 struct sockaddr_in dgram_dst
; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1105 typedef struct NetSocketListenState
{
1110 } NetSocketListenState
;
1112 /* XXX: we consider we can send the whole packet without blocking */
1113 static void net_socket_receive(void *opaque
, const uint8_t *buf
, int size
)
1115 NetSocketState
*s
= opaque
;
1119 send_all(s
->fd
, (const uint8_t *)&len
, sizeof(len
));
1120 send_all(s
->fd
, buf
, size
);
1123 static void net_socket_receive_dgram(void *opaque
, const uint8_t *buf
, int size
)
1125 NetSocketState
*s
= opaque
;
1126 sendto(s
->fd
, buf
, size
, 0,
1127 (struct sockaddr
*)&s
->dgram_dst
, sizeof(s
->dgram_dst
));
1130 static void net_socket_send(void *opaque
)
1132 NetSocketState
*s
= opaque
;
1138 size
= recv(s
->fd
, buf1
, sizeof(buf1
), 0);
1140 err
= socket_error();
1141 if (err
!= EWOULDBLOCK
)
1143 } else if (size
== 0) {
1144 /* end of connection */
1146 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
1152 /* reassemble a packet from the network */
1158 memcpy(s
->buf
+ s
->index
, buf
, l
);
1162 if (s
->index
== 4) {
1164 s
->packet_len
= ntohl(*(uint32_t *)s
->buf
);
1170 l
= s
->packet_len
- s
->index
;
1173 if (s
->index
+ l
<= sizeof(s
->buf
)) {
1174 memcpy(s
->buf
+ s
->index
, buf
, l
);
1176 fprintf(stderr
, "serious error: oversized packet received,"
1177 "connection terminated.\n");
1185 if (s
->index
>= s
->packet_len
) {
1186 qemu_send_packet(s
->vc
, s
->buf
, s
->packet_len
);
1195 static void net_socket_send_dgram(void *opaque
)
1197 NetSocketState
*s
= opaque
;
1200 size
= recv(s
->fd
, s
->buf
, sizeof(s
->buf
), 0);
1204 /* end of connection */
1205 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
1208 qemu_send_packet(s
->vc
, s
->buf
, size
);
1211 static int net_socket_mcast_create(struct sockaddr_in
*mcastaddr
)
1216 if (!IN_MULTICAST(ntohl(mcastaddr
->sin_addr
.s_addr
))) {
1217 fprintf(stderr
, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1218 inet_ntoa(mcastaddr
->sin_addr
),
1219 (int)ntohl(mcastaddr
->sin_addr
.s_addr
));
1223 fd
= socket(PF_INET
, SOCK_DGRAM
, 0);
1225 perror("socket(PF_INET, SOCK_DGRAM)");
1230 ret
=setsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
,
1231 (const char *)&val
, sizeof(val
));
1233 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1237 ret
= bind(fd
, (struct sockaddr
*)mcastaddr
, sizeof(*mcastaddr
));
1243 /* Add host to multicast group */
1244 imr
.imr_multiaddr
= mcastaddr
->sin_addr
;
1245 imr
.imr_interface
.s_addr
= htonl(INADDR_ANY
);
1247 ret
= setsockopt(fd
, IPPROTO_IP
, IP_ADD_MEMBERSHIP
,
1248 (const char *)&imr
, sizeof(struct ip_mreq
));
1250 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1254 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1256 ret
=setsockopt(fd
, IPPROTO_IP
, IP_MULTICAST_LOOP
,
1257 (const char *)&val
, sizeof(val
));
1259 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1263 socket_set_nonblock(fd
);
1271 static NetSocketState
*net_socket_fd_init_dgram(VLANState
*vlan
,
1274 int fd
, int is_connected
)
1276 struct sockaddr_in saddr
;
1278 socklen_t saddr_len
;
1281 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1282 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1283 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1287 if (getsockname(fd
, (struct sockaddr
*) &saddr
, &saddr_len
) == 0) {
1289 if (saddr
.sin_addr
.s_addr
==0) {
1290 fprintf(stderr
, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1294 /* clone dgram socket */
1295 newfd
= net_socket_mcast_create(&saddr
);
1297 /* error already reported by net_socket_mcast_create() */
1301 /* clone newfd to fd, close newfd */
1306 fprintf(stderr
, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1307 fd
, strerror(errno
));
1312 s
= qemu_mallocz(sizeof(NetSocketState
));
1315 s
->vc
= qemu_new_vlan_client(vlan
, model
, name
, net_socket_receive_dgram
, NULL
, s
);
1316 qemu_set_fd_handler(s
->fd
, net_socket_send_dgram
, NULL
, s
);
1318 /* mcast: save bound address as dst */
1319 if (is_connected
) s
->dgram_dst
=saddr
;
1321 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
1322 "socket: fd=%d (%s mcast=%s:%d)",
1323 fd
, is_connected
? "cloned" : "",
1324 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
1328 static void net_socket_connect(void *opaque
)
1330 NetSocketState
*s
= opaque
;
1331 qemu_set_fd_handler(s
->fd
, net_socket_send
, NULL
, s
);
1334 static NetSocketState
*net_socket_fd_init_stream(VLANState
*vlan
,
1337 int fd
, int is_connected
)
1340 s
= qemu_mallocz(sizeof(NetSocketState
));
1342 s
->vc
= qemu_new_vlan_client(vlan
, model
, name
,
1343 net_socket_receive
, NULL
, s
);
1344 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
1345 "socket: fd=%d", fd
);
1347 net_socket_connect(s
);
1349 qemu_set_fd_handler(s
->fd
, NULL
, net_socket_connect
, s
);
1354 static NetSocketState
*net_socket_fd_init(VLANState
*vlan
,
1355 const char *model
, const char *name
,
1356 int fd
, int is_connected
)
1358 int so_type
=-1, optlen
=sizeof(so_type
);
1360 if(getsockopt(fd
, SOL_SOCKET
, SO_TYPE
, (char *)&so_type
,
1361 (socklen_t
*)&optlen
)< 0) {
1362 fprintf(stderr
, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd
);
1367 return net_socket_fd_init_dgram(vlan
, model
, name
, fd
, is_connected
);
1369 return net_socket_fd_init_stream(vlan
, model
, name
, fd
, is_connected
);
1371 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
1372 fprintf(stderr
, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type
, fd
);
1373 return net_socket_fd_init_stream(vlan
, model
, name
, fd
, is_connected
);
1378 static void net_socket_accept(void *opaque
)
1380 NetSocketListenState
*s
= opaque
;
1382 struct sockaddr_in saddr
;
1387 len
= sizeof(saddr
);
1388 fd
= accept(s
->fd
, (struct sockaddr
*)&saddr
, &len
);
1389 if (fd
< 0 && errno
!= EINTR
) {
1391 } else if (fd
>= 0) {
1395 s1
= net_socket_fd_init(s
->vlan
, s
->model
, s
->name
, fd
, 1);
1399 snprintf(s1
->vc
->info_str
, sizeof(s1
->vc
->info_str
),
1400 "socket: connection from %s:%d",
1401 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
1405 static int net_socket_listen_init(VLANState
*vlan
,
1408 const char *host_str
)
1410 NetSocketListenState
*s
;
1412 struct sockaddr_in saddr
;
1414 if (parse_host_port(&saddr
, host_str
) < 0)
1417 s
= qemu_mallocz(sizeof(NetSocketListenState
));
1419 fd
= socket(PF_INET
, SOCK_STREAM
, 0);
1424 socket_set_nonblock(fd
);
1426 /* allow fast reuse */
1428 setsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, (const char *)&val
, sizeof(val
));
1430 ret
= bind(fd
, (struct sockaddr
*)&saddr
, sizeof(saddr
));
1435 ret
= listen(fd
, 0);
1441 s
->model
= strdup(model
);
1442 s
->name
= strdup(name
);
1444 qemu_set_fd_handler(fd
, net_socket_accept
, NULL
, s
);
1448 static int net_socket_connect_init(VLANState
*vlan
,
1451 const char *host_str
)
1454 int fd
, connected
, ret
, err
;
1455 struct sockaddr_in saddr
;
1457 if (parse_host_port(&saddr
, host_str
) < 0)
1460 fd
= socket(PF_INET
, SOCK_STREAM
, 0);
1465 socket_set_nonblock(fd
);
1469 ret
= connect(fd
, (struct sockaddr
*)&saddr
, sizeof(saddr
));
1471 err
= socket_error();
1472 if (err
== EINTR
|| err
== EWOULDBLOCK
) {
1473 } else if (err
== EINPROGRESS
) {
1476 } else if (err
== WSAEALREADY
) {
1489 s
= net_socket_fd_init(vlan
, model
, name
, fd
, connected
);
1492 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
1493 "socket: connect to %s:%d",
1494 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
1498 static int net_socket_mcast_init(VLANState
*vlan
,
1501 const char *host_str
)
1505 struct sockaddr_in saddr
;
1507 if (parse_host_port(&saddr
, host_str
) < 0)
1511 fd
= net_socket_mcast_create(&saddr
);
1515 s
= net_socket_fd_init(vlan
, model
, name
, fd
, 0);
1519 s
->dgram_dst
= saddr
;
1521 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
1522 "socket: mcast=%s:%d",
1523 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
1528 /* find or alloc a new VLAN */
1529 VLANState
*qemu_find_vlan(int id
)
1531 VLANState
**pvlan
, *vlan
;
1532 for(vlan
= first_vlan
; vlan
!= NULL
; vlan
= vlan
->next
) {
1536 vlan
= qemu_mallocz(sizeof(VLANState
));
1539 pvlan
= &first_vlan
;
1540 while (*pvlan
!= NULL
)
1541 pvlan
= &(*pvlan
)->next
;
1546 static int nic_get_free_idx(void)
1550 for (index
= 0; index
< MAX_NICS
; index
++)
1551 if (!nd_table
[index
].used
)
1556 void qemu_check_nic_model(NICInfo
*nd
, const char *model
)
1558 const char *models
[2];
1563 qemu_check_nic_model_list(nd
, models
, model
);
1566 void qemu_check_nic_model_list(NICInfo
*nd
, const char * const *models
,
1567 const char *default_model
)
1569 int i
, exit_status
= 0;
1572 nd
->model
= strdup(default_model
);
1574 if (strcmp(nd
->model
, "?") != 0) {
1575 for (i
= 0 ; models
[i
]; i
++)
1576 if (strcmp(nd
->model
, models
[i
]) == 0)
1579 fprintf(stderr
, "qemu: Unsupported NIC model: %s\n", nd
->model
);
1583 fprintf(stderr
, "qemu: Supported NIC models: ");
1584 for (i
= 0 ; models
[i
]; i
++)
1585 fprintf(stderr
, "%s%c", models
[i
], models
[i
+1] ? ',' : '\n');
1590 int net_client_init(const char *device
, const char *p
)
1598 if (get_param_value(buf
, sizeof(buf
), "vlan", p
)) {
1599 vlan_id
= strtol(buf
, NULL
, 0);
1601 vlan
= qemu_find_vlan(vlan_id
);
1603 fprintf(stderr
, "Could not create vlan %d\n", vlan_id
);
1606 if (get_param_value(buf
, sizeof(buf
), "name", p
)) {
1609 if (!strcmp(device
, "nic")) {
1612 int idx
= nic_get_free_idx();
1614 if (idx
== -1 || nb_nics
>= MAX_NICS
) {
1615 fprintf(stderr
, "Too Many NICs\n");
1618 nd
= &nd_table
[idx
];
1619 macaddr
= nd
->macaddr
;
1625 macaddr
[5] = 0x56 + idx
;
1627 if (get_param_value(buf
, sizeof(buf
), "macaddr", p
)) {
1628 if (parse_macaddr(macaddr
, buf
) < 0) {
1629 fprintf(stderr
, "invalid syntax for ethernet address\n");
1633 if (get_param_value(buf
, sizeof(buf
), "model", p
)) {
1634 nd
->model
= strdup(buf
);
1641 vlan
->nb_guest_devs
++;
1644 if (!strcmp(device
, "none")) {
1645 /* does nothing. It is needed to signal that no network cards
1650 if (!strcmp(device
, "user")) {
1651 if (get_param_value(buf
, sizeof(buf
), "hostname", p
)) {
1652 pstrcpy(slirp_hostname
, sizeof(slirp_hostname
), buf
);
1654 if (get_param_value(buf
, sizeof(buf
), "restrict", p
)) {
1655 slirp_restrict
= (buf
[0] == 'y') ? 1 : 0;
1657 if (get_param_value(buf
, sizeof(buf
), "ip", p
)) {
1658 slirp_ip
= strdup(buf
);
1660 vlan
->nb_host_devs
++;
1661 ret
= net_slirp_init(vlan
, device
, name
);
1662 } else if (!strcmp(device
, "channel")) {
1664 char name
[20], *devname
;
1665 struct VMChannel
*vmc
;
1667 port
= strtol(p
, &devname
, 10);
1669 if (port
< 1 || port
> 65535) {
1670 fprintf(stderr
, "vmchannel wrong port number\n");
1673 vmc
= malloc(sizeof(struct VMChannel
));
1674 snprintf(name
, 20, "vmchannel%ld", port
);
1675 vmc
->hd
= qemu_chr_open(name
, devname
, NULL
);
1677 fprintf(stderr
, "qemu: could not open vmchannel device"
1682 slirp_add_exec(3, vmc
->hd
, 4, port
);
1683 qemu_chr_add_handlers(vmc
->hd
, vmchannel_can_read
, vmchannel_read
,
1689 if (!strcmp(device
, "tap")) {
1691 if (get_param_value(ifname
, sizeof(ifname
), "ifname", p
) <= 0) {
1692 fprintf(stderr
, "tap: no interface name\n");
1695 vlan
->nb_host_devs
++;
1696 ret
= tap_win32_init(vlan
, device
, name
, ifname
);
1698 #elif defined (_AIX)
1700 if (!strcmp(device
, "tap")) {
1702 char setup_script
[1024], down_script
[1024];
1704 vlan
->nb_host_devs
++;
1705 if (get_param_value(buf
, sizeof(buf
), "fd", p
) > 0) {
1706 fd
= strtol(buf
, NULL
, 0);
1707 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1709 if (net_tap_fd_init(vlan
, device
, name
, fd
))
1712 if (get_param_value(ifname
, sizeof(ifname
), "ifname", p
) <= 0) {
1715 if (get_param_value(setup_script
, sizeof(setup_script
), "script", p
) == 0) {
1716 pstrcpy(setup_script
, sizeof(setup_script
), DEFAULT_NETWORK_SCRIPT
);
1718 if (get_param_value(down_script
, sizeof(down_script
), "downscript", p
) == 0) {
1719 pstrcpy(down_script
, sizeof(down_script
), DEFAULT_NETWORK_DOWN_SCRIPT
);
1721 ret
= net_tap_init(vlan
, device
, name
, ifname
, setup_script
, down_script
);
1725 if (!strcmp(device
, "socket")) {
1726 if (get_param_value(buf
, sizeof(buf
), "fd", p
) > 0) {
1728 fd
= strtol(buf
, NULL
, 0);
1730 if (net_socket_fd_init(vlan
, device
, name
, fd
, 1))
1732 } else if (get_param_value(buf
, sizeof(buf
), "listen", p
) > 0) {
1733 ret
= net_socket_listen_init(vlan
, device
, name
, buf
);
1734 } else if (get_param_value(buf
, sizeof(buf
), "connect", p
) > 0) {
1735 ret
= net_socket_connect_init(vlan
, device
, name
, buf
);
1736 } else if (get_param_value(buf
, sizeof(buf
), "mcast", p
) > 0) {
1737 ret
= net_socket_mcast_init(vlan
, device
, name
, buf
);
1739 fprintf(stderr
, "Unknown socket options: %s\n", p
);
1742 vlan
->nb_host_devs
++;
1745 if (!strcmp(device
, "vde")) {
1746 char vde_sock
[1024], vde_group
[512];
1747 int vde_port
, vde_mode
;
1748 vlan
->nb_host_devs
++;
1749 if (get_param_value(vde_sock
, sizeof(vde_sock
), "sock", p
) <= 0) {
1752 if (get_param_value(buf
, sizeof(buf
), "port", p
) > 0) {
1753 vde_port
= strtol(buf
, NULL
, 10);
1757 if (get_param_value(vde_group
, sizeof(vde_group
), "group", p
) <= 0) {
1758 vde_group
[0] = '\0';
1760 if (get_param_value(buf
, sizeof(buf
), "mode", p
) > 0) {
1761 vde_mode
= strtol(buf
, NULL
, 8);
1765 ret
= net_vde_init(vlan
, device
, name
, vde_sock
, vde_port
, vde_group
, vde_mode
);
1769 fprintf(stderr
, "Unknown network device: %s\n", device
);
1775 fprintf(stderr
, "Could not initialize device '%s'\n", device
);
1782 void net_client_uninit(NICInfo
*nd
)
1784 nd
->vlan
->nb_guest_devs
--;
1787 free((void *)nd
->model
);
1790 static int net_host_check_device(const char *device
)
1793 const char *valid_param_list
[] = { "tap", "socket"
1801 for (i
= 0; i
< sizeof(valid_param_list
) / sizeof(char *); i
++) {
1802 if (!strncmp(valid_param_list
[i
], device
,
1803 strlen(valid_param_list
[i
])))
1810 void net_host_device_add(Monitor
*mon
, const char *device
, const char *opts
)
1812 if (!net_host_check_device(device
)) {
1813 monitor_printf(mon
, "invalid host network device %s\n", device
);
1816 net_client_init(device
, opts
);
1819 void net_host_device_remove(Monitor
*mon
, int vlan_id
, const char *device
)
1822 VLANClientState
*vc
;
1824 if (!net_host_check_device(device
)) {
1825 monitor_printf(mon
, "invalid host network device %s\n", device
);
1829 vlan
= qemu_find_vlan(vlan_id
);
1831 monitor_printf(mon
, "can't find vlan %d\n", vlan_id
);
1835 for(vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
)
1836 if (!strcmp(vc
->name
, device
))
1840 monitor_printf(mon
, "can't find device %s\n", device
);
1843 qemu_del_vlan_client(vc
);
1846 int net_client_parse(const char *str
)
1854 while (*p
!= '\0' && *p
!= ',') {
1855 if ((q
- device
) < sizeof(device
) - 1)
1863 return net_client_init(device
, p
);
1866 void do_info_network(Monitor
*mon
)
1869 VLANClientState
*vc
;
1871 for(vlan
= first_vlan
; vlan
!= NULL
; vlan
= vlan
->next
) {
1872 monitor_printf(mon
, "VLAN %d devices:\n", vlan
->id
);
1873 for(vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
)
1874 monitor_printf(mon
, " %s: %s\n", vc
->name
, vc
->info_str
);
1878 int do_set_link(Monitor
*mon
, const char *name
, const char *up_or_down
)
1881 VLANClientState
*vc
= NULL
;
1883 for (vlan
= first_vlan
; vlan
!= NULL
; vlan
= vlan
->next
)
1884 for (vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
)
1885 if (strcmp(vc
->name
, name
) == 0)
1890 monitor_printf(mon
, "could not find network device '%s'", name
);
1894 if (strcmp(up_or_down
, "up") == 0)
1896 else if (strcmp(up_or_down
, "down") == 0)
1899 monitor_printf(mon
, "invalid link status '%s'; only 'up' or 'down' "
1900 "valid\n", up_or_down
);
1902 if (vc
->link_status_changed
)
1903 vc
->link_status_changed(vc
);
1908 void net_cleanup(void)
1912 #if !defined(_WIN32)
1913 /* close network clients */
1914 for(vlan
= first_vlan
; vlan
!= NULL
; vlan
= vlan
->next
) {
1915 VLANClientState
*vc
;
1917 for(vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
) {
1918 if (vc
->fd_read
== tap_receive
) {
1919 TAPState
*s
= vc
->opaque
;
1921 if (s
->down_script
[0])
1922 launch_script(s
->down_script
, s
->down_script_arg
, s
->fd
);
1924 #if defined(CONFIG_VDE)
1925 if (vc
->fd_read
== vde_from_qemu
) {
1926 VDEState
*s
= vc
->opaque
;
1935 void net_client_check(void)
1939 for(vlan
= first_vlan
; vlan
!= NULL
; vlan
= vlan
->next
) {
1940 if (vlan
->nb_guest_devs
== 0 && vlan
->nb_host_devs
== 0)
1942 if (vlan
->nb_guest_devs
== 0)
1943 fprintf(stderr
, "Warning: vlan %d with no nics\n", vlan
->id
);
1944 if (vlan
->nb_host_devs
== 0)
1946 "Warning: vlan %d is not connected to host network\n",