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>
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 *)𝔦
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",