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
24 #include "qemu-common.h"
28 #include "qemu-timer.h"
29 #include "qemu-char.h"
30 #include "audio/audio.h"
41 #include <sys/times.h>
45 #include <sys/ioctl.h>
46 #include <sys/resource.h>
47 #include <sys/socket.h>
48 #include <netinet/in.h>
51 #include <net/if_tap.h>
54 #include <linux/if_tun.h>
56 #include <arpa/inet.h>
59 #include <sys/select.h>
67 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
68 #include <freebsd/stdlib.h>
73 #include <linux/rtc.h>
75 /* For the benefit of older linux systems which don't supply it,
76 we use a local copy of hpet.h. */
77 /* #include <linux/hpet.h> */
80 #include <linux/ppdev.h>
81 #include <linux/parport.h>
85 #include <sys/ethernet.h>
86 #include <sys/sockio.h>
87 #include <netinet/arp.h>
88 #include <netinet/in.h>
89 #include <netinet/in_systm.h>
90 #include <netinet/ip.h>
91 #include <netinet/ip_icmp.h> // must come after ip.h
92 #include <netinet/udp.h>
93 #include <netinet/tcp.h>
101 #include "qemu_socket.h"
103 #if defined(CONFIG_SLIRP)
104 #include "libslirp.h"
107 #if defined(__OpenBSD__)
111 #if defined(CONFIG_VDE)
112 #include <libvdeplug.h>
117 #include <sys/timeb.h>
118 #include <mmsystem.h>
119 #define getopt_long_only getopt_long
120 #define memalign(align, size) malloc(size)
123 static VLANState
*first_vlan
;
125 /***********************************************************/
126 /* network device redirectors */
128 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
129 static void hex_dump(FILE *f
, const uint8_t *buf
, int size
)
133 for(i
=0;i
<size
;i
+=16) {
137 fprintf(f
, "%08x ", i
);
140 fprintf(f
, " %02x", buf
[i
+j
]);
147 if (c
< ' ' || c
> '~')
156 static int parse_macaddr(uint8_t *macaddr
, const char *p
)
163 offset
= strtol(p
, &last_char
, 0);
164 if (0 == errno
&& '\0' == *last_char
&&
165 offset
>= 0 && offset
<= 0xFFFFFF) {
166 macaddr
[3] = (offset
& 0xFF0000) >> 16;
167 macaddr
[4] = (offset
& 0xFF00) >> 8;
168 macaddr
[5] = offset
& 0xFF;
171 for(i
= 0; i
< 6; i
++) {
172 macaddr
[i
] = strtol(p
, (char **)&p
, 16);
177 if (*p
!= ':' && *p
!= '-')
188 static int get_str_sep(char *buf
, int buf_size
, const char **pp
, int sep
)
199 if (len
> buf_size
- 1)
208 int parse_host_src_port(struct sockaddr_in
*haddr
,
209 struct sockaddr_in
*saddr
,
210 const char *input_str
)
212 char *str
= strdup(input_str
);
213 char *host_str
= str
;
215 const char *src_str2
;
219 * Chop off any extra arguments at the end of the string which
220 * would start with a comma, then fill in the src port information
221 * if it was provided else use the "any address" and "any port".
223 if ((ptr
= strchr(str
,',')))
226 if ((src_str
= strchr(input_str
,'@'))) {
231 if (parse_host_port(haddr
, host_str
) < 0)
235 if (!src_str
|| *src_str
== '\0')
238 if (parse_host_port(saddr
, src_str2
) < 0)
249 int parse_host_port(struct sockaddr_in
*saddr
, const char *str
)
257 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
259 saddr
->sin_family
= AF_INET
;
260 if (buf
[0] == '\0') {
261 saddr
->sin_addr
.s_addr
= 0;
263 if (qemu_isdigit(buf
[0])) {
264 if (!inet_aton(buf
, &saddr
->sin_addr
))
267 if ((he
= gethostbyname(buf
)) == NULL
)
269 saddr
->sin_addr
= *(struct in_addr
*)he
->h_addr
;
272 port
= strtol(p
, (char **)&r
, 0);
275 saddr
->sin_port
= htons(port
);
279 #if !defined(_WIN32) && 0
280 static int parse_unix_path(struct sockaddr_un
*uaddr
, const char *str
)
285 len
= MIN(108, strlen(str
));
286 p
= strchr(str
, ',');
288 len
= MIN(len
, p
- str
);
290 memset(uaddr
, 0, sizeof(*uaddr
));
292 uaddr
->sun_family
= AF_UNIX
;
293 memcpy(uaddr
->sun_path
, str
, len
);
299 void qemu_format_nic_info_str(VLANClientState
*vc
, uint8_t macaddr
[6])
301 snprintf(vc
->info_str
, sizeof(vc
->info_str
),
302 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
304 macaddr
[0], macaddr
[1], macaddr
[2],
305 macaddr
[3], macaddr
[4], macaddr
[5]);
308 static char *assign_name(VLANClientState
*vc1
, const char *model
)
314 for (vlan
= first_vlan
; vlan
; vlan
= vlan
->next
) {
317 for (vc
= vlan
->first_client
; vc
; vc
= vc
->next
)
318 if (vc
!= vc1
&& strcmp(vc
->model
, model
) == 0)
322 snprintf(buf
, sizeof(buf
), "%s.%d", model
, id
);
327 VLANClientState
*qemu_new_vlan_client(VLANState
*vlan
,
330 IOReadHandler
*fd_read
,
331 IOCanRWHandler
*fd_can_read
,
334 VLANClientState
*vc
, **pvc
;
335 vc
= qemu_mallocz(sizeof(VLANClientState
));
336 vc
->model
= strdup(model
);
338 vc
->name
= strdup(name
);
340 vc
->name
= assign_name(vc
, model
);
341 vc
->fd_read
= fd_read
;
342 vc
->fd_can_read
= fd_can_read
;
347 pvc
= &vlan
->first_client
;
354 void qemu_del_vlan_client(VLANClientState
*vc
)
356 VLANClientState
**pvc
= &vc
->vlan
->first_client
;
369 VLANClientState
*qemu_find_vlan_client(VLANState
*vlan
, void *opaque
)
371 VLANClientState
**pvc
= &vlan
->first_client
;
374 if ((*pvc
)->opaque
== opaque
)
382 int qemu_can_send_packet(VLANClientState
*vc1
)
384 VLANState
*vlan
= vc1
->vlan
;
387 for(vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
) {
389 if (vc
->fd_can_read
&& vc
->fd_can_read(vc
->opaque
))
396 void qemu_send_packet(VLANClientState
*vc1
, const uint8_t *buf
, int size
)
398 VLANState
*vlan
= vc1
->vlan
;
405 printf("vlan %d send:\n", vlan
->id
);
406 hex_dump(stdout
, buf
, size
);
408 for(vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
) {
409 if (vc
!= vc1
&& !vc
->link_down
) {
410 vc
->fd_read(vc
->opaque
, buf
, size
);
415 static ssize_t
vc_sendv_compat(VLANClientState
*vc
, const struct iovec
*iov
,
418 uint8_t buffer
[4096];
422 for (i
= 0; i
< iovcnt
; i
++) {
425 len
= MIN(sizeof(buffer
) - offset
, iov
[i
].iov_len
);
426 memcpy(buffer
+ offset
, iov
[i
].iov_base
, len
);
430 vc
->fd_read(vc
->opaque
, buffer
, offset
);
435 static ssize_t
calc_iov_length(const struct iovec
*iov
, int iovcnt
)
440 for (i
= 0; i
< iovcnt
; i
++)
441 offset
+= iov
[i
].iov_len
;
445 ssize_t
qemu_sendv_packet(VLANClientState
*vc1
, const struct iovec
*iov
,
448 VLANState
*vlan
= vc1
->vlan
;
453 return calc_iov_length(iov
, iovcnt
);
455 for (vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
) {
462 len
= calc_iov_length(iov
, iovcnt
);
464 len
= vc
->fd_readv(vc
->opaque
, iov
, iovcnt
);
465 else if (vc
->fd_read
)
466 len
= vc_sendv_compat(vc
, iov
, iovcnt
);
468 max_len
= MAX(max_len
, len
);
474 #if defined(CONFIG_SLIRP)
476 /* slirp network adapter */
478 static int slirp_inited
;
479 static int slirp_restrict
;
480 static char *slirp_ip
;
481 static VLANClientState
*slirp_vc
;
483 int slirp_can_output(void)
485 return !slirp_vc
|| qemu_can_send_packet(slirp_vc
);
488 void slirp_output(const uint8_t *pkt
, int pkt_len
)
491 printf("slirp output:\n");
492 hex_dump(stdout
, pkt
, pkt_len
);
496 qemu_send_packet(slirp_vc
, pkt
, pkt_len
);
499 int slirp_is_inited(void)
504 static void slirp_receive(void *opaque
, const uint8_t *buf
, int size
)
507 printf("slirp input:\n");
508 hex_dump(stdout
, buf
, size
);
510 slirp_input(buf
, size
);
513 static int net_slirp_init(VLANState
*vlan
, const char *model
, const char *name
)
517 slirp_init(slirp_restrict
, slirp_ip
);
519 slirp_vc
= qemu_new_vlan_client(vlan
, model
, name
,
520 slirp_receive
, NULL
, NULL
);
521 slirp_vc
->info_str
[0] = '\0';
525 void net_slirp_redir(const char *redir_str
)
530 struct in_addr guest_addr
;
531 int host_port
, guest_port
;
535 slirp_init(slirp_restrict
, slirp_ip
);
539 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
541 if (!strcmp(buf
, "tcp")) {
543 } else if (!strcmp(buf
, "udp")) {
549 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
551 host_port
= strtol(buf
, &r
, 0);
555 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
557 if (buf
[0] == '\0') {
558 pstrcpy(buf
, sizeof(buf
), "10.0.2.15");
560 if (!inet_aton(buf
, &guest_addr
))
563 guest_port
= strtol(p
, &r
, 0);
567 if (slirp_redir(is_udp
, host_port
, guest_addr
, guest_port
) < 0) {
568 fprintf(stderr
, "qemu: could not set up redirection\n");
573 fprintf(stderr
, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
579 static char smb_dir
[1024];
581 static void erase_dir(char *dir_name
)
587 /* erase all the files in the directory */
588 if ((d
= opendir(dir_name
)) != 0) {
593 if (strcmp(de
->d_name
, ".") != 0 &&
594 strcmp(de
->d_name
, "..") != 0) {
595 snprintf(filename
, sizeof(filename
), "%s/%s",
596 smb_dir
, de
->d_name
);
597 if (unlink(filename
) != 0) /* is it a directory? */
606 /* automatic user mode samba server configuration */
607 static void smb_exit(void)
612 /* automatic user mode samba server configuration */
613 void net_slirp_smb(const char *exported_dir
)
616 char smb_cmdline
[1024];
621 slirp_init(slirp_restrict
, slirp_ip
);
624 /* XXX: better tmp dir construction */
625 snprintf(smb_dir
, sizeof(smb_dir
), "/tmp/qemu-smb.%d", getpid());
626 if (mkdir(smb_dir
, 0700) < 0) {
627 fprintf(stderr
, "qemu: could not create samba server dir '%s'\n", smb_dir
);
630 snprintf(smb_conf
, sizeof(smb_conf
), "%s/%s", smb_dir
, "smb.conf");
632 f
= fopen(smb_conf
, "w");
634 fprintf(stderr
, "qemu: could not create samba server configuration file '%s'\n", smb_conf
);
641 "socket address=127.0.0.1\n"
643 "lock directory=%s\n"
644 "log file=%s/log.smbd\n"
645 "smb passwd file=%s/smbpasswd\n"
661 snprintf(smb_cmdline
, sizeof(smb_cmdline
), "%s -s %s",
662 SMBD_COMMAND
, smb_conf
);
664 slirp_add_exec(0, smb_cmdline
, 4, 139);
667 #endif /* !defined(_WIN32) */
668 void do_info_slirp(void)
678 static int vmchannel_can_read(void *opaque
)
680 struct VMChannel
*vmc
= (struct VMChannel
*)opaque
;
681 return slirp_socket_can_recv(4, vmc
->port
);
684 static void vmchannel_read(void *opaque
, const uint8_t *buf
, int size
)
686 struct VMChannel
*vmc
= (struct VMChannel
*)opaque
;
687 slirp_socket_recv(4, vmc
->port
, buf
, size
);
690 #endif /* CONFIG_SLIRP */
694 typedef struct TAPState
{
697 char down_script
[1024];
698 char down_script_arg
[128];
702 static ssize_t
tap_receive_iov(void *opaque
, const struct iovec
*iov
,
705 TAPState
*s
= opaque
;
709 len
= writev(s
->fd
, iov
, iovcnt
);
710 } while (len
== -1 && (errno
== EINTR
|| errno
== EAGAIN
));
716 static void tap_receive(void *opaque
, const uint8_t *buf
, int size
)
718 TAPState
*s
= opaque
;
721 ret
= write(s
->fd
, buf
, size
);
722 if (ret
< 0 && (errno
== EINTR
|| errno
== EAGAIN
)) {
729 static void tap_send(void *opaque
)
731 TAPState
*s
= opaque
;
738 sbuf
.maxlen
= sizeof(buf
);
740 size
= getmsg(s
->fd
, NULL
, &sbuf
, &f
) >=0 ? sbuf
.len
: -1;
742 size
= read(s
->fd
, buf
, sizeof(buf
));
745 qemu_send_packet(s
->vc
, buf
, size
);
751 static TAPState
*net_tap_fd_init(VLANState
*vlan
,
758 s
= qemu_mallocz(sizeof(TAPState
));
760 s
->vc
= qemu_new_vlan_client(vlan
, model
, name
, tap_receive
, NULL
, s
);
762 s
->vc
->fd_readv
= tap_receive_iov
;
764 qemu_set_fd_handler(s
->fd
, tap_send
, NULL
, s
);
765 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
), "fd=%d", fd
);
769 #if defined (_BSD) || defined (__FreeBSD_kernel__)
770 static int tap_open(char *ifname
, int ifname_size
)
776 TFR(fd
= open("/dev/tap", O_RDWR
));
778 fprintf(stderr
, "warning: could not open /dev/tap: no virtual network emulation\n");
783 dev
= devname(s
.st_rdev
, S_IFCHR
);
784 pstrcpy(ifname
, ifname_size
, dev
);
786 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
789 #elif defined(__sun__)
790 #define TUNNEWPPA (('T'<<16) | 0x0001)
792 * Allocate TAP device, returns opened fd.
793 * Stores dev name in the first arg(must be large enough).
795 int tap_alloc(char *dev
, size_t dev_size
)
797 int tap_fd
, if_fd
, ppa
= -1;
798 static int ip_fd
= 0;
801 static int arp_fd
= 0;
802 int ip_muxid
, arp_muxid
;
803 struct strioctl strioc_if
, strioc_ppa
;
804 int link_type
= I_PLINK
;;
806 char actual_name
[32] = "";
808 memset(&ifr
, 0x0, sizeof(ifr
));
812 while( *ptr
&& !qemu_isdigit((int)*ptr
) ) ptr
++;
816 /* Check if IP device was opened */
820 TFR(ip_fd
= open("/dev/udp", O_RDWR
, 0));
822 syslog(LOG_ERR
, "Can't open /dev/ip (actually /dev/udp)");
826 TFR(tap_fd
= open("/dev/tap", O_RDWR
, 0));
828 syslog(LOG_ERR
, "Can't open /dev/tap");
832 /* Assign a new PPA and get its unit number. */
833 strioc_ppa
.ic_cmd
= TUNNEWPPA
;
834 strioc_ppa
.ic_timout
= 0;
835 strioc_ppa
.ic_len
= sizeof(ppa
);
836 strioc_ppa
.ic_dp
= (char *)&ppa
;
837 if ((ppa
= ioctl (tap_fd
, I_STR
, &strioc_ppa
)) < 0)
838 syslog (LOG_ERR
, "Can't assign new interface");
840 TFR(if_fd
= open("/dev/tap", O_RDWR
, 0));
842 syslog(LOG_ERR
, "Can't open /dev/tap (2)");
845 if(ioctl(if_fd
, I_PUSH
, "ip") < 0){
846 syslog(LOG_ERR
, "Can't push IP module");
850 if (ioctl(if_fd
, SIOCGLIFFLAGS
, &ifr
) < 0)
851 syslog(LOG_ERR
, "Can't get flags\n");
853 snprintf (actual_name
, 32, "tap%d", ppa
);
854 pstrcpy(ifr
.lifr_name
, sizeof(ifr
.lifr_name
), actual_name
);
857 /* Assign ppa according to the unit number returned by tun device */
859 if (ioctl (if_fd
, SIOCSLIFNAME
, &ifr
) < 0)
860 syslog (LOG_ERR
, "Can't set PPA %d", ppa
);
861 if (ioctl(if_fd
, SIOCGLIFFLAGS
, &ifr
) <0)
862 syslog (LOG_ERR
, "Can't get flags\n");
863 /* Push arp module to if_fd */
864 if (ioctl (if_fd
, I_PUSH
, "arp") < 0)
865 syslog (LOG_ERR
, "Can't push ARP module (2)");
867 /* Push arp module to ip_fd */
868 if (ioctl (ip_fd
, I_POP
, NULL
) < 0)
869 syslog (LOG_ERR
, "I_POP failed\n");
870 if (ioctl (ip_fd
, I_PUSH
, "arp") < 0)
871 syslog (LOG_ERR
, "Can't push ARP module (3)\n");
873 TFR(arp_fd
= open ("/dev/tap", O_RDWR
, 0));
875 syslog (LOG_ERR
, "Can't open %s\n", "/dev/tap");
877 /* Set ifname to arp */
878 strioc_if
.ic_cmd
= SIOCSLIFNAME
;
879 strioc_if
.ic_timout
= 0;
880 strioc_if
.ic_len
= sizeof(ifr
);
881 strioc_if
.ic_dp
= (char *)&ifr
;
882 if (ioctl(arp_fd
, I_STR
, &strioc_if
) < 0){
883 syslog (LOG_ERR
, "Can't set ifname to arp\n");
886 if((ip_muxid
= ioctl(ip_fd
, I_LINK
, if_fd
)) < 0){
887 syslog(LOG_ERR
, "Can't link TAP device to IP");
891 if ((arp_muxid
= ioctl (ip_fd
, link_type
, arp_fd
)) < 0)
892 syslog (LOG_ERR
, "Can't link TAP device to ARP");
896 memset(&ifr
, 0x0, sizeof(ifr
));
897 pstrcpy(ifr
.lifr_name
, sizeof(ifr
.lifr_name
), actual_name
);
898 ifr
.lifr_ip_muxid
= ip_muxid
;
899 ifr
.lifr_arp_muxid
= arp_muxid
;
901 if (ioctl (ip_fd
, SIOCSLIFMUXID
, &ifr
) < 0)
903 ioctl (ip_fd
, I_PUNLINK
, arp_muxid
);
904 ioctl (ip_fd
, I_PUNLINK
, ip_muxid
);
905 syslog (LOG_ERR
, "Can't set multiplexor id");
908 snprintf(dev
, dev_size
, "tap%d", ppa
);
912 static int tap_open(char *ifname
, int ifname_size
)
916 if( (fd
= tap_alloc(dev
, sizeof(dev
))) < 0 ){
917 fprintf(stderr
, "Cannot allocate TAP device\n");
920 pstrcpy(ifname
, ifname_size
, dev
);
921 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
925 static int tap_open(char *ifname
, int ifname_size
)
927 fprintf (stderr
, "no tap on AIX\n");
931 static int tap_open(char *ifname
, int ifname_size
)
936 TFR(fd
= open("/dev/net/tun", O_RDWR
));
938 fprintf(stderr
, "warning: could not open /dev/net/tun: no virtual network emulation\n");
941 memset(&ifr
, 0, sizeof(ifr
));
942 ifr
.ifr_flags
= IFF_TAP
| IFF_NO_PI
;
943 if (ifname
[0] != '\0')
944 pstrcpy(ifr
.ifr_name
, IFNAMSIZ
, ifname
);
946 pstrcpy(ifr
.ifr_name
, IFNAMSIZ
, "tap%d");
947 ret
= ioctl(fd
, TUNSETIFF
, (void *) &ifr
);
949 fprintf(stderr
, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
953 pstrcpy(ifname
, ifname_size
, ifr
.ifr_name
);
954 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
959 static int launch_script(const char *setup_script
, const char *ifname
, int fd
)
965 /* try to launch network script */
969 int open_max
= sysconf (_SC_OPEN_MAX
), i
;
970 for (i
= 0; i
< open_max
; i
++)
971 if (i
!= STDIN_FILENO
&&
972 i
!= STDOUT_FILENO
&&
973 i
!= STDERR_FILENO
&&
978 *parg
++ = (char *)setup_script
;
979 *parg
++ = (char *)ifname
;
981 execv(setup_script
, args
);
984 while (waitpid(pid
, &status
, 0) != pid
);
985 if (!WIFEXITED(status
) ||
986 WEXITSTATUS(status
) != 0) {
987 fprintf(stderr
, "%s: could not launch network script\n",
995 static int net_tap_init(VLANState
*vlan
, const char *model
,
996 const char *name
, const char *ifname1
,
997 const char *setup_script
, const char *down_script
)
1003 if (ifname1
!= NULL
)
1004 pstrcpy(ifname
, sizeof(ifname
), ifname1
);
1007 TFR(fd
= tap_open(ifname
, sizeof(ifname
)));
1011 if (!setup_script
|| !strcmp(setup_script
, "no"))
1013 if (setup_script
[0] != '\0') {
1014 if (launch_script(setup_script
, ifname
, fd
))
1017 s
= net_tap_fd_init(vlan
, model
, name
, fd
);
1020 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
1021 "ifname=%s,script=%s,downscript=%s",
1022 ifname
, setup_script
, down_script
);
1023 if (down_script
&& strcmp(down_script
, "no")) {
1024 snprintf(s
->down_script
, sizeof(s
->down_script
), "%s", down_script
);
1025 snprintf(s
->down_script_arg
, sizeof(s
->down_script_arg
), "%s", ifname
);
1030 #endif /* !_WIN32 */
1032 #if defined(CONFIG_VDE)
1033 typedef struct VDEState
{
1034 VLANClientState
*vc
;
1038 static void vde_to_qemu(void *opaque
)
1040 VDEState
*s
= opaque
;
1044 size
= vde_recv(s
->vde
, buf
, sizeof(buf
), 0);
1046 qemu_send_packet(s
->vc
, buf
, size
);
1050 static void vde_from_qemu(void *opaque
, const uint8_t *buf
, int size
)
1052 VDEState
*s
= opaque
;
1055 ret
= vde_send(s
->vde
, buf
, size
, 0);
1056 if (ret
< 0 && errno
== EINTR
) {
1063 static int net_vde_init(VLANState
*vlan
, const char *model
,
1064 const char *name
, const char *sock
,
1065 int port
, const char *group
, int mode
)
1068 char *init_group
= strlen(group
) ? (char *)group
: NULL
;
1069 char *init_sock
= strlen(sock
) ? (char *)sock
: NULL
;
1071 struct vde_open_args args
= {
1073 .group
= init_group
,
1077 s
= qemu_mallocz(sizeof(VDEState
));
1078 s
->vde
= vde_open(init_sock
, "QEMU", &args
);
1083 s
->vc
= qemu_new_vlan_client(vlan
, model
, name
, vde_from_qemu
, NULL
, s
);
1084 qemu_set_fd_handler(vde_datafd(s
->vde
), vde_to_qemu
, NULL
, s
);
1085 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
), "sock=%s,fd=%d",
1086 sock
, vde_datafd(s
->vde
));
1091 /* network connection */
1092 typedef struct NetSocketState
{
1093 VLANClientState
*vc
;
1095 int state
; /* 0 = getting length, 1 = getting data */
1099 struct sockaddr_in dgram_dst
; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1102 typedef struct NetSocketListenState
{
1107 } NetSocketListenState
;
1109 /* XXX: we consider we can send the whole packet without blocking */
1110 static void net_socket_receive(void *opaque
, const uint8_t *buf
, int size
)
1112 NetSocketState
*s
= opaque
;
1116 send_all(s
->fd
, (const uint8_t *)&len
, sizeof(len
));
1117 send_all(s
->fd
, buf
, size
);
1120 static void net_socket_receive_dgram(void *opaque
, const uint8_t *buf
, int size
)
1122 NetSocketState
*s
= opaque
;
1123 sendto(s
->fd
, buf
, size
, 0,
1124 (struct sockaddr
*)&s
->dgram_dst
, sizeof(s
->dgram_dst
));
1127 static void net_socket_send(void *opaque
)
1129 NetSocketState
*s
= opaque
;
1134 size
= recv(s
->fd
, buf1
, sizeof(buf1
), 0);
1136 err
= socket_error();
1137 if (err
!= EWOULDBLOCK
)
1139 } else if (size
== 0) {
1140 /* end of connection */
1142 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
1148 /* reassemble a packet from the network */
1154 memcpy(s
->buf
+ s
->index
, buf
, l
);
1158 if (s
->index
== 4) {
1160 s
->packet_len
= ntohl(*(uint32_t *)s
->buf
);
1166 l
= s
->packet_len
- s
->index
;
1169 memcpy(s
->buf
+ s
->index
, buf
, l
);
1173 if (s
->index
>= s
->packet_len
) {
1174 qemu_send_packet(s
->vc
, s
->buf
, s
->packet_len
);
1183 static void net_socket_send_dgram(void *opaque
)
1185 NetSocketState
*s
= opaque
;
1188 size
= recv(s
->fd
, s
->buf
, sizeof(s
->buf
), 0);
1192 /* end of connection */
1193 qemu_set_fd_handler(s
->fd
, NULL
, NULL
, NULL
);
1196 qemu_send_packet(s
->vc
, s
->buf
, size
);
1199 static int net_socket_mcast_create(struct sockaddr_in
*mcastaddr
)
1204 if (!IN_MULTICAST(ntohl(mcastaddr
->sin_addr
.s_addr
))) {
1205 fprintf(stderr
, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1206 inet_ntoa(mcastaddr
->sin_addr
),
1207 (int)ntohl(mcastaddr
->sin_addr
.s_addr
));
1211 fd
= socket(PF_INET
, SOCK_DGRAM
, 0);
1213 perror("socket(PF_INET, SOCK_DGRAM)");
1218 ret
=setsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
,
1219 (const char *)&val
, sizeof(val
));
1221 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1225 ret
= bind(fd
, (struct sockaddr
*)mcastaddr
, sizeof(*mcastaddr
));
1231 /* Add host to multicast group */
1232 imr
.imr_multiaddr
= mcastaddr
->sin_addr
;
1233 imr
.imr_interface
.s_addr
= htonl(INADDR_ANY
);
1235 ret
= setsockopt(fd
, IPPROTO_IP
, IP_ADD_MEMBERSHIP
,
1236 (const char *)&imr
, sizeof(struct ip_mreq
));
1238 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1242 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1244 ret
=setsockopt(fd
, IPPROTO_IP
, IP_MULTICAST_LOOP
,
1245 (const char *)&val
, sizeof(val
));
1247 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1251 socket_set_nonblock(fd
);
1259 static NetSocketState
*net_socket_fd_init_dgram(VLANState
*vlan
,
1262 int fd
, int is_connected
)
1264 struct sockaddr_in saddr
;
1266 socklen_t saddr_len
;
1269 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1270 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1271 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1275 if (getsockname(fd
, (struct sockaddr
*) &saddr
, &saddr_len
) == 0) {
1277 if (saddr
.sin_addr
.s_addr
==0) {
1278 fprintf(stderr
, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1282 /* clone dgram socket */
1283 newfd
= net_socket_mcast_create(&saddr
);
1285 /* error already reported by net_socket_mcast_create() */
1289 /* clone newfd to fd, close newfd */
1294 fprintf(stderr
, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1295 fd
, strerror(errno
));
1300 s
= qemu_mallocz(sizeof(NetSocketState
));
1303 s
->vc
= qemu_new_vlan_client(vlan
, model
, name
, net_socket_receive_dgram
, NULL
, s
);
1304 qemu_set_fd_handler(s
->fd
, net_socket_send_dgram
, NULL
, s
);
1306 /* mcast: save bound address as dst */
1307 if (is_connected
) s
->dgram_dst
=saddr
;
1309 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
1310 "socket: fd=%d (%s mcast=%s:%d)",
1311 fd
, is_connected
? "cloned" : "",
1312 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
1316 static void net_socket_connect(void *opaque
)
1318 NetSocketState
*s
= opaque
;
1319 qemu_set_fd_handler(s
->fd
, net_socket_send
, NULL
, s
);
1322 static NetSocketState
*net_socket_fd_init_stream(VLANState
*vlan
,
1325 int fd
, int is_connected
)
1328 s
= qemu_mallocz(sizeof(NetSocketState
));
1330 s
->vc
= qemu_new_vlan_client(vlan
, model
, name
,
1331 net_socket_receive
, NULL
, s
);
1332 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
1333 "socket: fd=%d", fd
);
1335 net_socket_connect(s
);
1337 qemu_set_fd_handler(s
->fd
, NULL
, net_socket_connect
, s
);
1342 static NetSocketState
*net_socket_fd_init(VLANState
*vlan
,
1343 const char *model
, const char *name
,
1344 int fd
, int is_connected
)
1346 int so_type
=-1, optlen
=sizeof(so_type
);
1348 if(getsockopt(fd
, SOL_SOCKET
, SO_TYPE
, (char *)&so_type
,
1349 (socklen_t
*)&optlen
)< 0) {
1350 fprintf(stderr
, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd
);
1355 return net_socket_fd_init_dgram(vlan
, model
, name
, fd
, is_connected
);
1357 return net_socket_fd_init_stream(vlan
, model
, name
, fd
, is_connected
);
1359 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
1360 fprintf(stderr
, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type
, fd
);
1361 return net_socket_fd_init_stream(vlan
, model
, name
, fd
, is_connected
);
1366 static void net_socket_accept(void *opaque
)
1368 NetSocketListenState
*s
= opaque
;
1370 struct sockaddr_in saddr
;
1375 len
= sizeof(saddr
);
1376 fd
= accept(s
->fd
, (struct sockaddr
*)&saddr
, &len
);
1377 if (fd
< 0 && errno
!= EINTR
) {
1379 } else if (fd
>= 0) {
1383 s1
= net_socket_fd_init(s
->vlan
, s
->model
, s
->name
, fd
, 1);
1387 snprintf(s1
->vc
->info_str
, sizeof(s1
->vc
->info_str
),
1388 "socket: connection from %s:%d",
1389 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
1393 static int net_socket_listen_init(VLANState
*vlan
,
1396 const char *host_str
)
1398 NetSocketListenState
*s
;
1400 struct sockaddr_in saddr
;
1402 if (parse_host_port(&saddr
, host_str
) < 0)
1405 s
= qemu_mallocz(sizeof(NetSocketListenState
));
1407 fd
= socket(PF_INET
, SOCK_STREAM
, 0);
1412 socket_set_nonblock(fd
);
1414 /* allow fast reuse */
1416 setsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, (const char *)&val
, sizeof(val
));
1418 ret
= bind(fd
, (struct sockaddr
*)&saddr
, sizeof(saddr
));
1423 ret
= listen(fd
, 0);
1429 s
->model
= strdup(model
);
1430 s
->name
= strdup(name
);
1432 qemu_set_fd_handler(fd
, net_socket_accept
, NULL
, s
);
1436 static int net_socket_connect_init(VLANState
*vlan
,
1439 const char *host_str
)
1442 int fd
, connected
, ret
, err
;
1443 struct sockaddr_in saddr
;
1445 if (parse_host_port(&saddr
, host_str
) < 0)
1448 fd
= socket(PF_INET
, SOCK_STREAM
, 0);
1453 socket_set_nonblock(fd
);
1457 ret
= connect(fd
, (struct sockaddr
*)&saddr
, sizeof(saddr
));
1459 err
= socket_error();
1460 if (err
== EINTR
|| err
== EWOULDBLOCK
) {
1461 } else if (err
== EINPROGRESS
) {
1464 } else if (err
== WSAEALREADY
) {
1477 s
= net_socket_fd_init(vlan
, model
, name
, fd
, connected
);
1480 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
1481 "socket: connect to %s:%d",
1482 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
1486 static int net_socket_mcast_init(VLANState
*vlan
,
1489 const char *host_str
)
1493 struct sockaddr_in saddr
;
1495 if (parse_host_port(&saddr
, host_str
) < 0)
1499 fd
= net_socket_mcast_create(&saddr
);
1503 s
= net_socket_fd_init(vlan
, model
, name
, fd
, 0);
1507 s
->dgram_dst
= saddr
;
1509 snprintf(s
->vc
->info_str
, sizeof(s
->vc
->info_str
),
1510 "socket: mcast=%s:%d",
1511 inet_ntoa(saddr
.sin_addr
), ntohs(saddr
.sin_port
));
1516 /* find or alloc a new VLAN */
1517 VLANState
*qemu_find_vlan(int id
)
1519 VLANState
**pvlan
, *vlan
;
1520 for(vlan
= first_vlan
; vlan
!= NULL
; vlan
= vlan
->next
) {
1524 vlan
= qemu_mallocz(sizeof(VLANState
));
1527 pvlan
= &first_vlan
;
1528 while (*pvlan
!= NULL
)
1529 pvlan
= &(*pvlan
)->next
;
1534 static int nic_get_free_idx(void)
1538 for (index
= 0; index
< MAX_NICS
; index
++)
1539 if (!nd_table
[index
].used
)
1544 void qemu_check_nic_model(NICInfo
*nd
, const char *model
)
1546 const char *models
[2];
1551 qemu_check_nic_model_list(nd
, models
, model
);
1554 void qemu_check_nic_model_list(NICInfo
*nd
, const char * const *models
,
1555 const char *default_model
)
1557 int i
, exit_status
= 0;
1560 nd
->model
= strdup(default_model
);
1562 if (strcmp(nd
->model
, "?") != 0) {
1563 for (i
= 0 ; models
[i
]; i
++)
1564 if (strcmp(nd
->model
, models
[i
]) == 0)
1567 fprintf(stderr
, "qemu: Unsupported NIC model: %s\n", nd
->model
);
1571 fprintf(stderr
, "qemu: Supported NIC models: ");
1572 for (i
= 0 ; models
[i
]; i
++)
1573 fprintf(stderr
, "%s%c", models
[i
], models
[i
+1] ? ',' : '\n');
1578 int net_client_init(const char *device
, const char *p
)
1586 if (get_param_value(buf
, sizeof(buf
), "vlan", p
)) {
1587 vlan_id
= strtol(buf
, NULL
, 0);
1589 vlan
= qemu_find_vlan(vlan_id
);
1591 fprintf(stderr
, "Could not create vlan %d\n", vlan_id
);
1594 if (get_param_value(buf
, sizeof(buf
), "name", p
)) {
1597 if (!strcmp(device
, "nic")) {
1600 int idx
= nic_get_free_idx();
1602 if (idx
== -1 || nb_nics
>= MAX_NICS
) {
1603 fprintf(stderr
, "Too Many NICs\n");
1606 nd
= &nd_table
[idx
];
1607 macaddr
= nd
->macaddr
;
1613 macaddr
[5] = 0x56 + idx
;
1615 if (get_param_value(buf
, sizeof(buf
), "macaddr", p
)) {
1616 if (parse_macaddr(macaddr
, buf
) < 0) {
1617 fprintf(stderr
, "invalid syntax for ethernet address\n");
1621 if (get_param_value(buf
, sizeof(buf
), "model", p
)) {
1622 nd
->model
= strdup(buf
);
1629 vlan
->nb_guest_devs
++;
1632 if (!strcmp(device
, "none")) {
1633 /* does nothing. It is needed to signal that no network cards
1638 if (!strcmp(device
, "user")) {
1639 if (get_param_value(buf
, sizeof(buf
), "hostname", p
)) {
1640 pstrcpy(slirp_hostname
, sizeof(slirp_hostname
), buf
);
1642 if (get_param_value(buf
, sizeof(buf
), "restrict", p
)) {
1643 slirp_restrict
= (buf
[0] == 'y') ? 1 : 0;
1645 if (get_param_value(buf
, sizeof(buf
), "ip", p
)) {
1646 slirp_ip
= strdup(buf
);
1648 vlan
->nb_host_devs
++;
1649 ret
= net_slirp_init(vlan
, device
, name
);
1650 } else if (!strcmp(device
, "channel")) {
1652 char name
[20], *devname
;
1653 struct VMChannel
*vmc
;
1655 port
= strtol(p
, &devname
, 10);
1657 if (port
< 1 || port
> 65535) {
1658 fprintf(stderr
, "vmchannel wrong port number\n");
1661 vmc
= malloc(sizeof(struct VMChannel
));
1662 snprintf(name
, 20, "vmchannel%ld", port
);
1663 vmc
->hd
= qemu_chr_open(name
, devname
, NULL
);
1665 fprintf(stderr
, "qemu: could not open vmchannel device"
1670 slirp_add_exec(3, vmc
->hd
, 4, port
);
1671 qemu_chr_add_handlers(vmc
->hd
, vmchannel_can_read
, vmchannel_read
,
1677 if (!strcmp(device
, "tap")) {
1679 if (get_param_value(ifname
, sizeof(ifname
), "ifname", p
) <= 0) {
1680 fprintf(stderr
, "tap: no interface name\n");
1683 vlan
->nb_host_devs
++;
1684 ret
= tap_win32_init(vlan
, device
, name
, ifname
);
1686 #elif defined (_AIX)
1688 if (!strcmp(device
, "tap")) {
1690 char setup_script
[1024], down_script
[1024];
1692 vlan
->nb_host_devs
++;
1693 if (get_param_value(buf
, sizeof(buf
), "fd", p
) > 0) {
1694 fd
= strtol(buf
, NULL
, 0);
1695 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
1697 if (net_tap_fd_init(vlan
, device
, name
, fd
))
1700 if (get_param_value(ifname
, sizeof(ifname
), "ifname", p
) <= 0) {
1703 if (get_param_value(setup_script
, sizeof(setup_script
), "script", p
) == 0) {
1704 pstrcpy(setup_script
, sizeof(setup_script
), DEFAULT_NETWORK_SCRIPT
);
1706 if (get_param_value(down_script
, sizeof(down_script
), "downscript", p
) == 0) {
1707 pstrcpy(down_script
, sizeof(down_script
), DEFAULT_NETWORK_DOWN_SCRIPT
);
1709 ret
= net_tap_init(vlan
, device
, name
, ifname
, setup_script
, down_script
);
1713 if (!strcmp(device
, "socket")) {
1714 if (get_param_value(buf
, sizeof(buf
), "fd", p
) > 0) {
1716 fd
= strtol(buf
, NULL
, 0);
1718 if (net_socket_fd_init(vlan
, device
, name
, fd
, 1))
1720 } else if (get_param_value(buf
, sizeof(buf
), "listen", p
) > 0) {
1721 ret
= net_socket_listen_init(vlan
, device
, name
, buf
);
1722 } else if (get_param_value(buf
, sizeof(buf
), "connect", p
) > 0) {
1723 ret
= net_socket_connect_init(vlan
, device
, name
, buf
);
1724 } else if (get_param_value(buf
, sizeof(buf
), "mcast", p
) > 0) {
1725 ret
= net_socket_mcast_init(vlan
, device
, name
, buf
);
1727 fprintf(stderr
, "Unknown socket options: %s\n", p
);
1730 vlan
->nb_host_devs
++;
1733 if (!strcmp(device
, "vde")) {
1734 char vde_sock
[1024], vde_group
[512];
1735 int vde_port
, vde_mode
;
1736 vlan
->nb_host_devs
++;
1737 if (get_param_value(vde_sock
, sizeof(vde_sock
), "sock", p
) <= 0) {
1740 if (get_param_value(buf
, sizeof(buf
), "port", p
) > 0) {
1741 vde_port
= strtol(buf
, NULL
, 10);
1745 if (get_param_value(vde_group
, sizeof(vde_group
), "group", p
) <= 0) {
1746 vde_group
[0] = '\0';
1748 if (get_param_value(buf
, sizeof(buf
), "mode", p
) > 0) {
1749 vde_mode
= strtol(buf
, NULL
, 8);
1753 ret
= net_vde_init(vlan
, device
, name
, vde_sock
, vde_port
, vde_group
, vde_mode
);
1757 fprintf(stderr
, "Unknown network device: %s\n", device
);
1763 fprintf(stderr
, "Could not initialize device '%s'\n", device
);
1770 void net_client_uninit(NICInfo
*nd
)
1772 nd
->vlan
->nb_guest_devs
--;
1775 free((void *)nd
->model
);
1778 static int net_host_check_device(const char *device
)
1781 const char *valid_param_list
[] = { "tap", "socket"
1789 for (i
= 0; i
< sizeof(valid_param_list
) / sizeof(char *); i
++) {
1790 if (!strncmp(valid_param_list
[i
], device
,
1791 strlen(valid_param_list
[i
])))
1798 void net_host_device_add(const char *device
, const char *opts
)
1800 if (!net_host_check_device(device
)) {
1801 term_printf("invalid host network device %s\n", device
);
1804 net_client_init(device
, opts
);
1807 void net_host_device_remove(int vlan_id
, const char *device
)
1810 VLANClientState
*vc
;
1812 if (!net_host_check_device(device
)) {
1813 term_printf("invalid host network device %s\n", device
);
1817 vlan
= qemu_find_vlan(vlan_id
);
1819 term_printf("can't find vlan %d\n", vlan_id
);
1823 for(vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
)
1824 if (!strcmp(vc
->name
, device
))
1828 term_printf("can't find device %s\n", device
);
1831 qemu_del_vlan_client(vc
);
1834 int net_client_parse(const char *str
)
1842 while (*p
!= '\0' && *p
!= ',') {
1843 if ((q
- device
) < sizeof(device
) - 1)
1851 return net_client_init(device
, p
);
1854 void do_info_network(void)
1857 VLANClientState
*vc
;
1859 for(vlan
= first_vlan
; vlan
!= NULL
; vlan
= vlan
->next
) {
1860 term_printf("VLAN %d devices:\n", vlan
->id
);
1861 for(vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
)
1862 term_printf(" %s: %s\n", vc
->name
, vc
->info_str
);
1866 int do_set_link(const char *name
, const char *up_or_down
)
1869 VLANClientState
*vc
= NULL
;
1871 for (vlan
= first_vlan
; vlan
!= NULL
; vlan
= vlan
->next
)
1872 for (vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
)
1873 if (strcmp(vc
->name
, name
) == 0)
1878 term_printf("could not find network device '%s'", name
);
1882 if (strcmp(up_or_down
, "up") == 0)
1884 else if (strcmp(up_or_down
, "down") == 0)
1887 term_printf("invalid link status '%s'; only 'up' or 'down' valid\n",
1890 if (vc
->link_status_changed
)
1891 vc
->link_status_changed(vc
);
1896 void net_cleanup(void)
1900 #if !defined(_WIN32)
1901 /* close network clients */
1902 for(vlan
= first_vlan
; vlan
!= NULL
; vlan
= vlan
->next
) {
1903 VLANClientState
*vc
;
1905 for(vc
= vlan
->first_client
; vc
!= NULL
; vc
= vc
->next
) {
1906 if (vc
->fd_read
== tap_receive
) {
1907 TAPState
*s
= vc
->opaque
;
1909 if (s
->down_script
[0])
1910 launch_script(s
->down_script
, s
->down_script_arg
, s
->fd
);
1912 #if defined(CONFIG_VDE)
1913 if (vc
->fd_read
== vde_from_qemu
) {
1914 VDEState
*s
= vc
->opaque
;
1923 void net_client_check(void)
1927 for(vlan
= first_vlan
; vlan
!= NULL
; vlan
= vlan
->next
) {
1928 if (vlan
->nb_guest_devs
== 0 && vlan
->nb_host_devs
== 0)
1930 if (vlan
->nb_guest_devs
== 0)
1931 fprintf(stderr
, "Warning: vlan %d with no nics\n", vlan
->id
);
1932 if (vlan
->nb_host_devs
== 0)
1934 "Warning: vlan %d is not connected to host network\n",