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 HOST_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>
107 #include <sys/timeb.h>
108 #include <mmsystem.h>
109 #define getopt_long_only getopt_long
110 #define memalign(align, size) malloc(size)
113 #include "qemu-common.h"
117 #include "qemu-timer.h"
118 #include "qemu-char.h"
119 #include "audio/audio.h"
120 #include "qemu_socket.h"
122 #if defined(CONFIG_SLIRP)
123 #include "libslirp.h"
127 static VLANState *first_vlan;
129 /***********************************************************/
130 /* network device redirectors */
132 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
133 static void hex_dump(FILE *f, const uint8_t *buf, int size)
137 for(i=0;i<size;i+=16) {
141 fprintf(f, "%08x ", i);
144 fprintf(f, " %02x", buf[i+j]);
151 if (c < ' ' || c > '~')
160 static int parse_macaddr(uint8_t *macaddr, const char *p)
167 offset = strtol(p, &last_char, 0);
168 if (0 == errno && '\0' == *last_char &&
169 offset >= 0 && offset <= 0xFFFFFF) {
170 macaddr[3] = (offset & 0xFF0000) >> 16;
171 macaddr[4] = (offset & 0xFF00) >> 8;
172 macaddr[5] = offset & 0xFF;
175 for(i = 0; i < 6; i++) {
176 macaddr[i] = strtol(p, (char **)&p, 16);
181 if (*p != ':' && *p != '-')
192 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
203 if (len > buf_size - 1)
212 int parse_host_src_port(struct sockaddr_in *haddr,
213 struct sockaddr_in *saddr,
214 const char *input_str)
216 char *str = strdup(input_str);
217 char *host_str = str;
219 const char *src_str2;
223 * Chop off any extra arguments at the end of the string which
224 * would start with a comma, then fill in the src port information
225 * if it was provided else use the "any address" and "any port".
227 if ((ptr = strchr(str,',')))
230 if ((src_str = strchr(input_str,'@'))) {
235 if (parse_host_port(haddr, host_str) < 0)
239 if (!src_str || *src_str == '\0')
242 if (parse_host_port(saddr, src_str2) < 0)
253 int parse_host_port(struct sockaddr_in *saddr, const char *str)
261 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
263 saddr->sin_family = AF_INET;
264 if (buf[0] == '\0') {
265 saddr->sin_addr.s_addr = 0;
267 if (qemu_isdigit(buf[0])) {
268 if (!inet_aton(buf, &saddr->sin_addr))
271 if ((he = gethostbyname(buf)) == NULL)
273 saddr->sin_addr = *(struct in_addr *)he->h_addr;
276 port = strtol(p, (char **)&r, 0);
279 saddr->sin_port = htons(port);
283 #if !defined(_WIN32) && 0
284 static int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
289 len = MIN(108, strlen(str));
290 p = strchr(str, ',');
292 len = MIN(len, p - str);
294 memset(uaddr, 0, sizeof(*uaddr));
296 uaddr->sun_family = AF_UNIX;
297 memcpy(uaddr->sun_path, str, len);
303 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
305 snprintf(vc->info_str, sizeof(vc->info_str),
306 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
308 macaddr[0], macaddr[1], macaddr[2],
309 macaddr[3], macaddr[4], macaddr[5]);
312 static char *assign_name(VLANClientState *vc1, const char *model)
318 for (vlan = first_vlan; vlan; vlan = vlan->next) {
321 for (vc = vlan->first_client; vc; vc = vc->next)
322 if (vc != vc1 && strcmp(vc->model, model) == 0)
326 snprintf(buf, sizeof(buf), "%s.%d", model, id);
331 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
334 IOReadHandler *fd_read,
335 IOCanRWHandler *fd_can_read,
338 VLANClientState *vc, **pvc;
339 vc = qemu_mallocz(sizeof(VLANClientState));
340 vc->model = strdup(model);
342 vc->name = strdup(name);
344 vc->name = assign_name(vc, model);
345 vc->fd_read = fd_read;
346 vc->fd_can_read = fd_can_read;
351 pvc = &vlan->first_client;
358 void qemu_del_vlan_client(VLANClientState *vc)
360 VLANClientState **pvc = &vc->vlan->first_client;
373 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
375 VLANClientState **pvc = &vlan->first_client;
378 if ((*pvc)->opaque == opaque)
386 int qemu_can_send_packet(VLANClientState *vc1)
388 VLANState *vlan = vc1->vlan;
391 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
393 if (vc->fd_can_read && vc->fd_can_read(vc->opaque))
400 void qemu_send_packet(VLANClientState *vc1, const uint8_t *buf, int size)
402 VLANState *vlan = vc1->vlan;
409 printf("vlan %d send:\n", vlan->id);
410 hex_dump(stdout, buf, size);
412 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
413 if (vc != vc1 && !vc->link_down) {
414 vc->fd_read(vc->opaque, buf, size);
419 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
422 uint8_t buffer[4096];
426 for (i = 0; i < iovcnt; i++) {
429 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
430 memcpy(buffer + offset, iov[i].iov_base, len);
434 vc->fd_read(vc->opaque, buffer, offset);
439 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
444 for (i = 0; i < iovcnt; i++)
445 offset += iov[i].iov_len;
449 ssize_t qemu_sendv_packet(VLANClientState *vc1, const struct iovec *iov,
452 VLANState *vlan = vc1->vlan;
457 return calc_iov_length(iov, iovcnt);
459 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
466 len = calc_iov_length(iov, iovcnt);
468 len = vc->fd_readv(vc->opaque, iov, iovcnt);
469 else if (vc->fd_read)
470 len = vc_sendv_compat(vc, iov, iovcnt);
472 max_len = MAX(max_len, len);
478 #if defined(CONFIG_SLIRP)
480 /* slirp network adapter */
482 static int slirp_inited;
483 static int slirp_restrict;
484 static char *slirp_ip;
485 static VLANClientState *slirp_vc;
487 int slirp_can_output(void)
489 return !slirp_vc || qemu_can_send_packet(slirp_vc);
492 void slirp_output(const uint8_t *pkt, int pkt_len)
495 printf("slirp output:\n");
496 hex_dump(stdout, pkt, pkt_len);
500 qemu_send_packet(slirp_vc, pkt, pkt_len);
503 int slirp_is_inited(void)
508 static void slirp_receive(void *opaque, const uint8_t *buf, int size)
511 printf("slirp input:\n");
512 hex_dump(stdout, buf, size);
514 slirp_input(buf, size);
517 static int net_slirp_init(VLANState *vlan, const char *model, const char *name)
521 slirp_init(slirp_restrict, slirp_ip);
523 slirp_vc = qemu_new_vlan_client(vlan, model, name,
524 slirp_receive, NULL, NULL);
525 slirp_vc->info_str[0] = '\0';
529 void net_slirp_redir(const char *redir_str)
534 struct in_addr guest_addr;
535 int host_port, guest_port;
539 slirp_init(slirp_restrict, slirp_ip);
543 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
545 if (!strcmp(buf, "tcp")) {
547 } else if (!strcmp(buf, "udp")) {
553 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
555 host_port = strtol(buf, &r, 0);
559 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
561 if (buf[0] == '\0') {
562 pstrcpy(buf, sizeof(buf), "10.0.2.15");
564 if (!inet_aton(buf, &guest_addr))
567 guest_port = strtol(p, &r, 0);
571 if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
572 fprintf(stderr, "qemu: could not set up redirection\n");
577 fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
583 static char smb_dir[1024];
585 static void erase_dir(char *dir_name)
591 /* erase all the files in the directory */
592 if ((d = opendir(dir_name)) != NULL) {
597 if (strcmp(de->d_name, ".") != 0 &&
598 strcmp(de->d_name, "..") != 0) {
599 snprintf(filename, sizeof(filename), "%s/%s",
600 smb_dir, de->d_name);
601 if (unlink(filename) != 0) /* is it a directory? */
610 /* automatic user mode samba server configuration */
611 static void smb_exit(void)
616 /* automatic user mode samba server configuration */
617 void net_slirp_smb(const char *exported_dir)
620 char smb_cmdline[1024];
625 slirp_init(slirp_restrict, slirp_ip);
628 /* XXX: better tmp dir construction */
629 snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%ld", (long)getpid());
630 if (mkdir(smb_dir, 0700) < 0) {
631 fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
634 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
636 f = fopen(smb_conf, "w");
638 fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
645 "socket address=127.0.0.1\n"
647 "lock directory=%s\n"
648 "log file=%s/log.smbd\n"
649 "smb passwd file=%s/smbpasswd\n"
665 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
666 SMBD_COMMAND, smb_conf);
668 slirp_add_exec(0, smb_cmdline, 4, 139);
671 #endif /* !defined(_WIN32) */
672 void do_info_slirp(Monitor *mon)
682 static int vmchannel_can_read(void *opaque)
684 struct VMChannel *vmc = (struct VMChannel*)opaque;
685 return slirp_socket_can_recv(4, vmc->port);
688 static void vmchannel_read(void *opaque, const uint8_t *buf, int size)
690 struct VMChannel *vmc = (struct VMChannel*)opaque;
691 slirp_socket_recv(4, vmc->port, buf, size);
694 #endif /* CONFIG_SLIRP */
698 typedef struct TAPState {
701 char down_script[1024];
702 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));
718 static void tap_receive(void *opaque, const uint8_t *buf, int size)
720 TAPState *s = opaque;
723 ret = write(s->fd, buf, size);
724 if (ret < 0 && (errno == EINTR || errno == EAGAIN)) {
731 static void tap_send(void *opaque)
733 TAPState *s = opaque;
740 sbuf.maxlen = sizeof(buf);
741 sbuf.buf = (char *)buf;
742 size = getmsg(s->fd, NULL, &sbuf, &f) >=0 ? sbuf.len : -1;
744 size = read(s->fd, buf, sizeof(buf));
747 qemu_send_packet(s->vc, buf, size);
753 static TAPState *net_tap_fd_init(VLANState *vlan,
760 s = qemu_mallocz(sizeof(TAPState));
762 s->vc = qemu_new_vlan_client(vlan, model, name, tap_receive, NULL, s);
763 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 (HOST_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 static 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 *)𝔦
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 */
1097 unsigned int packet_len;
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;
1135 size = recv(s->fd, buf1, sizeof(buf1), 0);
1137 err = socket_error();
1138 if (err != EWOULDBLOCK)
1140 } else if (size == 0) {
1141 /* end of connection */
1143 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1149 /* reassemble a packet from the network */
1155 memcpy(s->buf + s->index, buf, l);
1159 if (s->index == 4) {
1161 s->packet_len = ntohl(*(uint32_t *)s->buf);
1167 l = s->packet_len - s->index;
1170 if (s->index + l <= sizeof(s->buf)) {
1171 memcpy(s->buf + s->index, buf, l);
1173 fprintf(stderr, "serious error: oversized packet received,"
1174 "connection terminated.\n");
1182 if (s->index >= s->packet_len) {
1183 qemu_send_packet(s->vc, s->buf, s->packet_len);
1192 static void net_socket_send_dgram(void *opaque)
1194 NetSocketState *s = opaque;
1197 size = recv(s->fd, s->buf, sizeof(s->buf), 0);
1201 /* end of connection */
1202 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1205 qemu_send_packet(s->vc, s->buf, size);
1208 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1213 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1214 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1215 inet_ntoa(mcastaddr->sin_addr),
1216 (int)ntohl(mcastaddr->sin_addr.s_addr));
1220 fd = socket(PF_INET, SOCK_DGRAM, 0);
1222 perror("socket(PF_INET, SOCK_DGRAM)");
1227 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1228 (const char *)&val, sizeof(val));
1230 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1234 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1240 /* Add host to multicast group */
1241 imr.imr_multiaddr = mcastaddr->sin_addr;
1242 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1244 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1245 (const char *)&imr, sizeof(struct ip_mreq));
1247 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1251 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1253 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1254 (const char *)&val, sizeof(val));
1256 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1260 socket_set_nonblock(fd);
1268 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1271 int fd, int is_connected)
1273 struct sockaddr_in saddr;
1275 socklen_t saddr_len;
1278 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1279 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1280 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1284 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1286 if (saddr.sin_addr.s_addr==0) {
1287 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1291 /* clone dgram socket */
1292 newfd = net_socket_mcast_create(&saddr);
1294 /* error already reported by net_socket_mcast_create() */
1298 /* clone newfd to fd, close newfd */
1303 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1304 fd, strerror(errno));
1309 s = qemu_mallocz(sizeof(NetSocketState));
1312 s->vc = qemu_new_vlan_client(vlan, model, name, net_socket_receive_dgram, NULL, s);
1313 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1315 /* mcast: save bound address as dst */
1316 if (is_connected) s->dgram_dst=saddr;
1318 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1319 "socket: fd=%d (%s mcast=%s:%d)",
1320 fd, is_connected? "cloned" : "",
1321 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1325 static void net_socket_connect(void *opaque)
1327 NetSocketState *s = opaque;
1328 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1331 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
1334 int fd, int is_connected)
1337 s = qemu_mallocz(sizeof(NetSocketState));
1339 s->vc = qemu_new_vlan_client(vlan, model, name,
1340 net_socket_receive, NULL, s);
1341 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1342 "socket: fd=%d", fd);
1344 net_socket_connect(s);
1346 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1351 static NetSocketState *net_socket_fd_init(VLANState *vlan,
1352 const char *model, const char *name,
1353 int fd, int is_connected)
1355 int so_type=-1, optlen=sizeof(so_type);
1357 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
1358 (socklen_t *)&optlen)< 0) {
1359 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
1364 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
1366 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1368 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
1369 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
1370 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1375 static void net_socket_accept(void *opaque)
1377 NetSocketListenState *s = opaque;
1379 struct sockaddr_in saddr;
1384 len = sizeof(saddr);
1385 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
1386 if (fd < 0 && errno != EINTR) {
1388 } else if (fd >= 0) {
1392 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
1396 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
1397 "socket: connection from %s:%d",
1398 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1402 static int net_socket_listen_init(VLANState *vlan,
1405 const char *host_str)
1407 NetSocketListenState *s;
1409 struct sockaddr_in saddr;
1411 if (parse_host_port(&saddr, host_str) < 0)
1414 s = qemu_mallocz(sizeof(NetSocketListenState));
1416 fd = socket(PF_INET, SOCK_STREAM, 0);
1421 socket_set_nonblock(fd);
1423 /* allow fast reuse */
1425 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
1427 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1432 ret = listen(fd, 0);
1438 s->model = strdup(model);
1439 s->name = strdup(name);
1441 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
1445 static int net_socket_connect_init(VLANState *vlan,
1448 const char *host_str)
1451 int fd, connected, ret, err;
1452 struct sockaddr_in saddr;
1454 if (parse_host_port(&saddr, host_str) < 0)
1457 fd = socket(PF_INET, SOCK_STREAM, 0);
1462 socket_set_nonblock(fd);
1466 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1468 err = socket_error();
1469 if (err == EINTR || err == EWOULDBLOCK) {
1470 } else if (err == EINPROGRESS) {
1473 } else if (err == WSAEALREADY) {
1486 s = net_socket_fd_init(vlan, model, name, fd, connected);
1489 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1490 "socket: connect to %s:%d",
1491 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1495 static int net_socket_mcast_init(VLANState *vlan,
1498 const char *host_str)
1502 struct sockaddr_in saddr;
1504 if (parse_host_port(&saddr, host_str) < 0)
1508 fd = net_socket_mcast_create(&saddr);
1512 s = net_socket_fd_init(vlan, model, name, fd, 0);
1516 s->dgram_dst = saddr;
1518 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1519 "socket: mcast=%s:%d",
1520 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1525 /* find or alloc a new VLAN */
1526 VLANState *qemu_find_vlan(int id)
1528 VLANState **pvlan, *vlan;
1529 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1533 vlan = qemu_mallocz(sizeof(VLANState));
1536 pvlan = &first_vlan;
1537 while (*pvlan != NULL)
1538 pvlan = &(*pvlan)->next;
1543 static int nic_get_free_idx(void)
1547 for (index = 0; index < MAX_NICS; index++)
1548 if (!nd_table[index].used)
1553 void qemu_check_nic_model(NICInfo *nd, const char *model)
1555 const char *models[2];
1560 qemu_check_nic_model_list(nd, models, model);
1563 void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
1564 const char *default_model)
1566 int i, exit_status = 0;
1569 nd->model = strdup(default_model);
1571 if (strcmp(nd->model, "?") != 0) {
1572 for (i = 0 ; models[i]; i++)
1573 if (strcmp(nd->model, models[i]) == 0)
1576 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
1580 fprintf(stderr, "qemu: Supported NIC models: ");
1581 for (i = 0 ; models[i]; i++)
1582 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
1587 int net_client_init(const char *device, const char *p)
1595 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
1596 vlan_id = strtol(buf, NULL, 0);
1598 vlan = qemu_find_vlan(vlan_id);
1600 fprintf(stderr, "Could not create vlan %d\n", vlan_id);
1603 if (get_param_value(buf, sizeof(buf), "name", p)) {
1606 if (!strcmp(device, "nic")) {
1609 int idx = nic_get_free_idx();
1611 if (idx == -1 || nb_nics >= MAX_NICS) {
1612 fprintf(stderr, "Too Many NICs\n");
1616 nd = &nd_table[idx];
1617 macaddr = nd->macaddr;
1623 macaddr[5] = 0x56 + idx;
1625 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
1626 if (parse_macaddr(macaddr, buf) < 0) {
1627 fprintf(stderr, "invalid syntax for ethernet address\n");
1632 if (get_param_value(buf, sizeof(buf), "model", p)) {
1633 nd->model = strdup(buf);
1640 vlan->nb_guest_devs++;
1643 if (!strcmp(device, "none")) {
1644 /* does nothing. It is needed to signal that no network cards
1649 if (!strcmp(device, "user")) {
1650 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
1651 pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
1653 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
1654 slirp_restrict = (buf[0] == 'y') ? 1 : 0;
1656 if (get_param_value(buf, sizeof(buf), "ip", p)) {
1657 slirp_ip = strdup(buf);
1659 vlan->nb_host_devs++;
1660 ret = net_slirp_init(vlan, device, name);
1661 } else if (!strcmp(device, "channel")) {
1663 char name[20], *devname;
1664 struct VMChannel *vmc;
1666 port = strtol(p, &devname, 10);
1668 if (port < 1 || port > 65535) {
1669 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"
1683 slirp_add_exec(3, vmc->hd, 4, port);
1684 qemu_chr_add_handlers(vmc->hd, vmchannel_can_read, vmchannel_read,
1690 if (!strcmp(device, "tap")) {
1692 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
1693 fprintf(stderr, "tap: no interface name\n");
1697 vlan->nb_host_devs++;
1698 ret = tap_win32_init(vlan, device, name, ifname);
1700 #elif defined (_AIX)
1702 if (!strcmp(device, "tap")) {
1704 char setup_script[1024], down_script[1024];
1706 vlan->nb_host_devs++;
1707 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
1708 fd = strtol(buf, NULL, 0);
1709 fcntl(fd, F_SETFL, O_NONBLOCK);
1711 if (net_tap_fd_init(vlan, device, name, fd))
1714 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
1717 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
1718 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
1720 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
1721 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
1723 ret = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
1727 if (!strcmp(device, "socket")) {
1728 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
1730 fd = strtol(buf, NULL, 0);
1732 if (net_socket_fd_init(vlan, device, name, fd, 1))
1734 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
1735 ret = net_socket_listen_init(vlan, device, name, buf);
1736 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
1737 ret = net_socket_connect_init(vlan, device, name, buf);
1738 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
1739 ret = net_socket_mcast_init(vlan, device, name, buf);
1741 fprintf(stderr, "Unknown socket options: %s\n", p);
1745 vlan->nb_host_devs++;
1748 if (!strcmp(device, "vde")) {
1749 char vde_sock[1024], vde_group[512];
1750 int vde_port, vde_mode;
1751 vlan->nb_host_devs++;
1752 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
1755 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
1756 vde_port = strtol(buf, NULL, 10);
1760 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
1761 vde_group[0] = '\0';
1763 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
1764 vde_mode = strtol(buf, NULL, 8);
1768 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
1772 fprintf(stderr, "Unknown network device: %s\n", device);
1777 fprintf(stderr, "Could not initialize device '%s'\n", device);
1785 void net_client_uninit(NICInfo *nd)
1787 nd->vlan->nb_guest_devs--;
1790 free((void *)nd->model);
1793 static int net_host_check_device(const char *device)
1796 const char *valid_param_list[] = { "tap", "socket"
1804 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
1805 if (!strncmp(valid_param_list[i], device,
1806 strlen(valid_param_list[i])))
1813 void net_host_device_add(Monitor *mon, const char *device, const char *opts)
1815 if (!net_host_check_device(device)) {
1816 monitor_printf(mon, "invalid host network device %s\n", device);
1819 net_client_init(device, opts);
1822 void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
1825 VLANClientState *vc;
1827 vlan = qemu_find_vlan(vlan_id);
1829 monitor_printf(mon, "can't find vlan %d\n", vlan_id);
1833 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
1834 if (!strcmp(vc->name, device))
1838 monitor_printf(mon, "can't find device %s\n", device);
1841 qemu_del_vlan_client(vc);
1844 int net_client_parse(const char *str)
1852 while (*p != '\0' && *p != ',') {
1853 if ((q - device) < sizeof(device) - 1)
1861 return net_client_init(device, p);
1864 void do_info_network(Monitor *mon)
1867 VLANClientState *vc;
1869 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1870 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
1871 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
1872 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
1876 int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
1879 VLANClientState *vc = NULL;
1881 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
1882 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
1883 if (strcmp(vc->name, name) == 0)
1888 monitor_printf(mon, "could not find network device '%s'", name);
1892 if (strcmp(up_or_down, "up") == 0)
1894 else if (strcmp(up_or_down, "down") == 0)
1897 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
1898 "valid\n", up_or_down);
1900 if (vc->link_status_changed)
1901 vc->link_status_changed(vc);
1906 void net_cleanup(void)
1908 #if !defined(_WIN32)
1911 /* close network clients */
1912 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1913 VLANClientState *vc;
1915 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
1916 if (vc->fd_read == tap_receive) {
1917 TAPState *s = vc->opaque;
1919 if (s->down_script[0])
1920 launch_script(s->down_script, s->down_script_arg, s->fd);
1922 #if defined(CONFIG_VDE)
1923 if (vc->fd_read == vde_from_qemu) {
1924 VDEState *s = vc->opaque;
1933 void net_client_check(void)
1937 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1938 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
1940 if (vlan->nb_guest_devs == 0)
1941 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
1942 if (vlan->nb_host_devs == 0)
1944 "Warning: vlan %d is not connected to host network\n",