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 int qemu_can_send_packet(VLANClientState *vc1)
371 VLANState *vlan = vc1->vlan;
374 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
376 if (vc->fd_can_read && vc->fd_can_read(vc->opaque))
383 void qemu_send_packet(VLANClientState *vc1, const uint8_t *buf, int size)
385 VLANState *vlan = vc1->vlan;
392 printf("vlan %d send:\n", vlan->id);
393 hex_dump(stdout, buf, size);
395 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
396 if (vc != vc1 && !vc->link_down) {
397 vc->fd_read(vc->opaque, buf, size);
402 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
405 uint8_t buffer[4096];
409 for (i = 0; i < iovcnt; i++) {
412 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
413 memcpy(buffer + offset, iov[i].iov_base, len);
417 vc->fd_read(vc->opaque, buffer, offset);
422 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
427 for (i = 0; i < iovcnt; i++)
428 offset += iov[i].iov_len;
432 ssize_t qemu_sendv_packet(VLANClientState *vc1, const struct iovec *iov,
435 VLANState *vlan = vc1->vlan;
440 return calc_iov_length(iov, iovcnt);
442 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
449 len = calc_iov_length(iov, iovcnt);
451 len = vc->fd_readv(vc->opaque, iov, iovcnt);
452 else if (vc->fd_read)
453 len = vc_sendv_compat(vc, iov, iovcnt);
455 max_len = MAX(max_len, len);
461 #if defined(CONFIG_SLIRP)
463 /* slirp network adapter */
465 static int slirp_inited;
466 static int slirp_restrict;
467 static char *slirp_ip;
468 static VLANClientState *slirp_vc;
470 int slirp_can_output(void)
472 return !slirp_vc || qemu_can_send_packet(slirp_vc);
475 void slirp_output(const uint8_t *pkt, int pkt_len)
478 printf("slirp output:\n");
479 hex_dump(stdout, pkt, pkt_len);
483 qemu_send_packet(slirp_vc, pkt, pkt_len);
486 int slirp_is_inited(void)
491 static void slirp_receive(void *opaque, const uint8_t *buf, int size)
494 printf("slirp input:\n");
495 hex_dump(stdout, buf, size);
497 slirp_input(buf, size);
500 static int net_slirp_init(VLANState *vlan, const char *model, const char *name)
504 slirp_init(slirp_restrict, slirp_ip);
506 slirp_vc = qemu_new_vlan_client(vlan, model, name,
507 slirp_receive, NULL, NULL);
508 slirp_vc->info_str[0] = '\0';
512 void net_slirp_redir(const char *redir_str)
517 struct in_addr guest_addr;
518 int host_port, guest_port;
522 slirp_init(slirp_restrict, slirp_ip);
526 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
528 if (!strcmp(buf, "tcp")) {
530 } else if (!strcmp(buf, "udp")) {
536 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
538 host_port = strtol(buf, &r, 0);
542 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
544 if (buf[0] == '\0') {
545 pstrcpy(buf, sizeof(buf), "10.0.2.15");
547 if (!inet_aton(buf, &guest_addr))
550 guest_port = strtol(p, &r, 0);
554 if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
555 fprintf(stderr, "qemu: could not set up redirection\n");
560 fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
566 static char smb_dir[1024];
568 static void erase_dir(char *dir_name)
574 /* erase all the files in the directory */
575 if ((d = opendir(dir_name)) != 0) {
580 if (strcmp(de->d_name, ".") != 0 &&
581 strcmp(de->d_name, "..") != 0) {
582 snprintf(filename, sizeof(filename), "%s/%s",
583 smb_dir, de->d_name);
584 if (unlink(filename) != 0) /* is it a directory? */
593 /* automatic user mode samba server configuration */
594 static void smb_exit(void)
599 /* automatic user mode samba server configuration */
600 void net_slirp_smb(const char *exported_dir)
603 char smb_cmdline[1024];
608 slirp_init(slirp_restrict, slirp_ip);
611 /* XXX: better tmp dir construction */
612 snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%d", getpid());
613 if (mkdir(smb_dir, 0700) < 0) {
614 fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
617 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
619 f = fopen(smb_conf, "w");
621 fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
628 "socket address=127.0.0.1\n"
630 "lock directory=%s\n"
631 "log file=%s/log.smbd\n"
632 "smb passwd file=%s/smbpasswd\n"
648 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
649 SMBD_COMMAND, smb_conf);
651 slirp_add_exec(0, smb_cmdline, 4, 139);
654 #endif /* !defined(_WIN32) */
655 void do_info_slirp(void)
660 #endif /* CONFIG_SLIRP */
664 typedef struct TAPState {
667 char down_script[1024];
668 char down_script_arg[128];
672 static ssize_t tap_receive_iov(void *opaque, const struct iovec *iov,
675 TAPState *s = opaque;
679 len = writev(s->fd, iov, iovcnt);
680 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
686 static void tap_receive(void *opaque, const uint8_t *buf, int size)
688 TAPState *s = opaque;
691 ret = write(s->fd, buf, size);
692 if (ret < 0 && (errno == EINTR || errno == EAGAIN)) {
699 static void tap_send(void *opaque)
701 TAPState *s = opaque;
708 sbuf.maxlen = sizeof(buf);
710 size = getmsg(s->fd, NULL, &sbuf, &f) >=0 ? sbuf.len : -1;
712 size = read(s->fd, buf, sizeof(buf));
715 qemu_send_packet(s->vc, buf, size);
721 static TAPState *net_tap_fd_init(VLANState *vlan,
728 s = qemu_mallocz(sizeof(TAPState));
730 s->vc = qemu_new_vlan_client(vlan, model, name, tap_receive, NULL, s);
732 s->vc->fd_readv = tap_receive_iov;
734 qemu_set_fd_handler(s->fd, tap_send, NULL, s);
735 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
739 #if defined (_BSD) || defined (__FreeBSD_kernel__)
740 static int tap_open(char *ifname, int ifname_size)
746 TFR(fd = open("/dev/tap", O_RDWR));
748 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
753 dev = devname(s.st_rdev, S_IFCHR);
754 pstrcpy(ifname, ifname_size, dev);
756 fcntl(fd, F_SETFL, O_NONBLOCK);
759 #elif defined(__sun__)
760 #define TUNNEWPPA (('T'<<16) | 0x0001)
762 * Allocate TAP device, returns opened fd.
763 * Stores dev name in the first arg(must be large enough).
765 int tap_alloc(char *dev, size_t dev_size)
767 int tap_fd, if_fd, ppa = -1;
768 static int ip_fd = 0;
771 static int arp_fd = 0;
772 int ip_muxid, arp_muxid;
773 struct strioctl strioc_if, strioc_ppa;
774 int link_type = I_PLINK;;
776 char actual_name[32] = "";
778 memset(&ifr, 0x0, sizeof(ifr));
782 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
786 /* Check if IP device was opened */
790 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
792 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
796 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
798 syslog(LOG_ERR, "Can't open /dev/tap");
802 /* Assign a new PPA and get its unit number. */
803 strioc_ppa.ic_cmd = TUNNEWPPA;
804 strioc_ppa.ic_timout = 0;
805 strioc_ppa.ic_len = sizeof(ppa);
806 strioc_ppa.ic_dp = (char *)&ppa;
807 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
808 syslog (LOG_ERR, "Can't assign new interface");
810 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
812 syslog(LOG_ERR, "Can't open /dev/tap (2)");
815 if(ioctl(if_fd, I_PUSH, "ip") < 0){
816 syslog(LOG_ERR, "Can't push IP module");
820 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
821 syslog(LOG_ERR, "Can't get flags\n");
823 snprintf (actual_name, 32, "tap%d", ppa);
824 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
827 /* Assign ppa according to the unit number returned by tun device */
829 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
830 syslog (LOG_ERR, "Can't set PPA %d", ppa);
831 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
832 syslog (LOG_ERR, "Can't get flags\n");
833 /* Push arp module to if_fd */
834 if (ioctl (if_fd, I_PUSH, "arp") < 0)
835 syslog (LOG_ERR, "Can't push ARP module (2)");
837 /* Push arp module to ip_fd */
838 if (ioctl (ip_fd, I_POP, NULL) < 0)
839 syslog (LOG_ERR, "I_POP failed\n");
840 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
841 syslog (LOG_ERR, "Can't push ARP module (3)\n");
843 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
845 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
847 /* Set ifname to arp */
848 strioc_if.ic_cmd = SIOCSLIFNAME;
849 strioc_if.ic_timout = 0;
850 strioc_if.ic_len = sizeof(ifr);
851 strioc_if.ic_dp = (char *)𝔦
852 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
853 syslog (LOG_ERR, "Can't set ifname to arp\n");
856 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
857 syslog(LOG_ERR, "Can't link TAP device to IP");
861 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
862 syslog (LOG_ERR, "Can't link TAP device to ARP");
866 memset(&ifr, 0x0, sizeof(ifr));
867 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
868 ifr.lifr_ip_muxid = ip_muxid;
869 ifr.lifr_arp_muxid = arp_muxid;
871 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
873 ioctl (ip_fd, I_PUNLINK , arp_muxid);
874 ioctl (ip_fd, I_PUNLINK, ip_muxid);
875 syslog (LOG_ERR, "Can't set multiplexor id");
878 snprintf(dev, dev_size, "tap%d", ppa);
882 static int tap_open(char *ifname, int ifname_size)
886 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
887 fprintf(stderr, "Cannot allocate TAP device\n");
890 pstrcpy(ifname, ifname_size, dev);
891 fcntl(fd, F_SETFL, O_NONBLOCK);
895 static int tap_open(char *ifname, int ifname_size)
897 fprintf (stderr, "no tap on AIX\n");
901 static int tap_open(char *ifname, int ifname_size)
906 TFR(fd = open("/dev/net/tun", O_RDWR));
908 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
911 memset(&ifr, 0, sizeof(ifr));
912 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
913 if (ifname[0] != '\0')
914 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
916 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
917 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
919 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
923 pstrcpy(ifname, ifname_size, ifr.ifr_name);
924 fcntl(fd, F_SETFL, O_NONBLOCK);
929 static int launch_script(const char *setup_script, const char *ifname, int fd)
935 /* try to launch network script */
939 int open_max = sysconf (_SC_OPEN_MAX), i;
940 for (i = 0; i < open_max; i++)
941 if (i != STDIN_FILENO &&
942 i != STDOUT_FILENO &&
943 i != STDERR_FILENO &&
948 *parg++ = (char *)setup_script;
949 *parg++ = (char *)ifname;
951 execv(setup_script, args);
954 while (waitpid(pid, &status, 0) != pid);
955 if (!WIFEXITED(status) ||
956 WEXITSTATUS(status) != 0) {
957 fprintf(stderr, "%s: could not launch network script\n",
965 static int net_tap_init(VLANState *vlan, const char *model,
966 const char *name, const char *ifname1,
967 const char *setup_script, const char *down_script)
974 pstrcpy(ifname, sizeof(ifname), ifname1);
977 TFR(fd = tap_open(ifname, sizeof(ifname)));
981 if (!setup_script || !strcmp(setup_script, "no"))
983 if (setup_script[0] != '\0') {
984 if (launch_script(setup_script, ifname, fd))
987 s = net_tap_fd_init(vlan, model, name, fd);
990 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
991 "ifname=%s,script=%s,downscript=%s",
992 ifname, setup_script, down_script);
993 if (down_script && strcmp(down_script, "no")) {
994 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
995 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1000 #endif /* !_WIN32 */
1002 #if defined(CONFIG_VDE)
1003 typedef struct VDEState {
1004 VLANClientState *vc;
1008 static void vde_to_qemu(void *opaque)
1010 VDEState *s = opaque;
1014 size = vde_recv(s->vde, buf, sizeof(buf), 0);
1016 qemu_send_packet(s->vc, buf, size);
1020 static void vde_from_qemu(void *opaque, const uint8_t *buf, int size)
1022 VDEState *s = opaque;
1025 ret = vde_send(s->vde, buf, size, 0);
1026 if (ret < 0 && errno == EINTR) {
1033 static int net_vde_init(VLANState *vlan, const char *model,
1034 const char *name, const char *sock,
1035 int port, const char *group, int mode)
1038 char *init_group = strlen(group) ? (char *)group : NULL;
1039 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1041 struct vde_open_args args = {
1043 .group = init_group,
1047 s = qemu_mallocz(sizeof(VDEState));
1048 s->vde = vde_open(init_sock, "QEMU", &args);
1053 s->vc = qemu_new_vlan_client(vlan, model, name, vde_from_qemu, NULL, s);
1054 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1055 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1056 sock, vde_datafd(s->vde));
1061 /* network connection */
1062 typedef struct NetSocketState {
1063 VLANClientState *vc;
1065 int state; /* 0 = getting length, 1 = getting data */
1069 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1072 typedef struct NetSocketListenState {
1077 } NetSocketListenState;
1079 /* XXX: we consider we can send the whole packet without blocking */
1080 static void net_socket_receive(void *opaque, const uint8_t *buf, int size)
1082 NetSocketState *s = opaque;
1086 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1087 send_all(s->fd, buf, size);
1090 static void net_socket_receive_dgram(void *opaque, const uint8_t *buf, int size)
1092 NetSocketState *s = opaque;
1093 sendto(s->fd, buf, size, 0,
1094 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1097 static void net_socket_send(void *opaque)
1099 NetSocketState *s = opaque;
1104 size = recv(s->fd, buf1, sizeof(buf1), 0);
1106 err = socket_error();
1107 if (err != EWOULDBLOCK)
1109 } else if (size == 0) {
1110 /* end of connection */
1112 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1118 /* reassemble a packet from the network */
1124 memcpy(s->buf + s->index, buf, l);
1128 if (s->index == 4) {
1130 s->packet_len = ntohl(*(uint32_t *)s->buf);
1136 l = s->packet_len - s->index;
1139 memcpy(s->buf + s->index, buf, l);
1143 if (s->index >= s->packet_len) {
1144 qemu_send_packet(s->vc, s->buf, s->packet_len);
1153 static void net_socket_send_dgram(void *opaque)
1155 NetSocketState *s = opaque;
1158 size = recv(s->fd, s->buf, sizeof(s->buf), 0);
1162 /* end of connection */
1163 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1166 qemu_send_packet(s->vc, s->buf, size);
1169 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1174 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1175 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1176 inet_ntoa(mcastaddr->sin_addr),
1177 (int)ntohl(mcastaddr->sin_addr.s_addr));
1181 fd = socket(PF_INET, SOCK_DGRAM, 0);
1183 perror("socket(PF_INET, SOCK_DGRAM)");
1188 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1189 (const char *)&val, sizeof(val));
1191 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1195 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1201 /* Add host to multicast group */
1202 imr.imr_multiaddr = mcastaddr->sin_addr;
1203 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1205 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1206 (const char *)&imr, sizeof(struct ip_mreq));
1208 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1212 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1214 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1215 (const char *)&val, sizeof(val));
1217 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1221 socket_set_nonblock(fd);
1229 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1232 int fd, int is_connected)
1234 struct sockaddr_in saddr;
1236 socklen_t saddr_len;
1239 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1240 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1241 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1245 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1247 if (saddr.sin_addr.s_addr==0) {
1248 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1252 /* clone dgram socket */
1253 newfd = net_socket_mcast_create(&saddr);
1255 /* error already reported by net_socket_mcast_create() */
1259 /* clone newfd to fd, close newfd */
1264 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1265 fd, strerror(errno));
1270 s = qemu_mallocz(sizeof(NetSocketState));
1273 s->vc = qemu_new_vlan_client(vlan, model, name, net_socket_receive_dgram, NULL, s);
1274 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1276 /* mcast: save bound address as dst */
1277 if (is_connected) s->dgram_dst=saddr;
1279 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1280 "socket: fd=%d (%s mcast=%s:%d)",
1281 fd, is_connected? "cloned" : "",
1282 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1286 static void net_socket_connect(void *opaque)
1288 NetSocketState *s = opaque;
1289 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1292 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
1295 int fd, int is_connected)
1298 s = qemu_mallocz(sizeof(NetSocketState));
1300 s->vc = qemu_new_vlan_client(vlan, model, name,
1301 net_socket_receive, NULL, s);
1302 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1303 "socket: fd=%d", fd);
1305 net_socket_connect(s);
1307 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1312 static NetSocketState *net_socket_fd_init(VLANState *vlan,
1313 const char *model, const char *name,
1314 int fd, int is_connected)
1316 int so_type=-1, optlen=sizeof(so_type);
1318 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
1319 (socklen_t *)&optlen)< 0) {
1320 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
1325 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
1327 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1329 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
1330 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
1331 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1336 static void net_socket_accept(void *opaque)
1338 NetSocketListenState *s = opaque;
1340 struct sockaddr_in saddr;
1345 len = sizeof(saddr);
1346 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
1347 if (fd < 0 && errno != EINTR) {
1349 } else if (fd >= 0) {
1353 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
1357 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
1358 "socket: connection from %s:%d",
1359 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1363 static int net_socket_listen_init(VLANState *vlan,
1366 const char *host_str)
1368 NetSocketListenState *s;
1370 struct sockaddr_in saddr;
1372 if (parse_host_port(&saddr, host_str) < 0)
1375 s = qemu_mallocz(sizeof(NetSocketListenState));
1377 fd = socket(PF_INET, SOCK_STREAM, 0);
1382 socket_set_nonblock(fd);
1384 /* allow fast reuse */
1386 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
1388 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1393 ret = listen(fd, 0);
1399 s->model = strdup(model);
1400 s->name = strdup(name);
1402 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
1406 static int net_socket_connect_init(VLANState *vlan,
1409 const char *host_str)
1412 int fd, connected, ret, err;
1413 struct sockaddr_in saddr;
1415 if (parse_host_port(&saddr, host_str) < 0)
1418 fd = socket(PF_INET, SOCK_STREAM, 0);
1423 socket_set_nonblock(fd);
1427 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1429 err = socket_error();
1430 if (err == EINTR || err == EWOULDBLOCK) {
1431 } else if (err == EINPROGRESS) {
1434 } else if (err == WSAEALREADY) {
1447 s = net_socket_fd_init(vlan, model, name, fd, connected);
1450 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1451 "socket: connect to %s:%d",
1452 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1456 static int net_socket_mcast_init(VLANState *vlan,
1459 const char *host_str)
1463 struct sockaddr_in saddr;
1465 if (parse_host_port(&saddr, host_str) < 0)
1469 fd = net_socket_mcast_create(&saddr);
1473 s = net_socket_fd_init(vlan, model, name, fd, 0);
1477 s->dgram_dst = saddr;
1479 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1480 "socket: mcast=%s:%d",
1481 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1486 /* find or alloc a new VLAN */
1487 VLANState *qemu_find_vlan(int id)
1489 VLANState **pvlan, *vlan;
1490 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1494 vlan = qemu_mallocz(sizeof(VLANState));
1497 pvlan = &first_vlan;
1498 while (*pvlan != NULL)
1499 pvlan = &(*pvlan)->next;
1504 void qemu_check_nic_model(NICInfo *nd, const char *model)
1506 const char *models[2];
1511 qemu_check_nic_model_list(nd, models, model);
1514 void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
1515 const char *default_model)
1517 int i, exit_status = 0;
1520 nd->model = strdup(default_model);
1522 if (strcmp(nd->model, "?") != 0) {
1523 for (i = 0 ; models[i]; i++)
1524 if (strcmp(nd->model, models[i]) == 0)
1527 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
1531 fprintf(stderr, "qemu: Supported NIC models: ");
1532 for (i = 0 ; models[i]; i++)
1533 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
1538 int net_client_init(const char *device, const char *p)
1546 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
1547 vlan_id = strtol(buf, NULL, 0);
1549 vlan = qemu_find_vlan(vlan_id);
1551 fprintf(stderr, "Could not create vlan %d\n", vlan_id);
1554 if (get_param_value(buf, sizeof(buf), "name", p)) {
1557 if (!strcmp(device, "nic")) {
1561 if (nb_nics >= MAX_NICS) {
1562 fprintf(stderr, "Too Many NICs\n");
1565 nd = &nd_table[nb_nics];
1566 macaddr = nd->macaddr;
1572 macaddr[5] = 0x56 + nb_nics;
1574 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
1575 if (parse_macaddr(macaddr, buf) < 0) {
1576 fprintf(stderr, "invalid syntax for ethernet address\n");
1580 if (get_param_value(buf, sizeof(buf), "model", p)) {
1581 nd->model = strdup(buf);
1587 vlan->nb_guest_devs++;
1590 if (!strcmp(device, "none")) {
1591 /* does nothing. It is needed to signal that no network cards
1596 if (!strcmp(device, "user")) {
1597 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
1598 pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
1600 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
1601 slirp_restrict = (buf[0] == 'y') ? 1 : 0;
1603 if (get_param_value(buf, sizeof(buf), "ip", p)) {
1604 slirp_ip = strdup(buf);
1606 vlan->nb_host_devs++;
1607 ret = net_slirp_init(vlan, device, name);
1611 if (!strcmp(device, "tap")) {
1613 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
1614 fprintf(stderr, "tap: no interface name\n");
1617 vlan->nb_host_devs++;
1618 ret = tap_win32_init(vlan, device, name, ifname);
1620 #elif defined (_AIX)
1622 if (!strcmp(device, "tap")) {
1624 char setup_script[1024], down_script[1024];
1626 vlan->nb_host_devs++;
1627 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
1628 fd = strtol(buf, NULL, 0);
1629 fcntl(fd, F_SETFL, O_NONBLOCK);
1631 if (net_tap_fd_init(vlan, device, name, fd))
1634 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
1637 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
1638 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
1640 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
1641 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
1643 ret = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
1647 if (!strcmp(device, "socket")) {
1648 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
1650 fd = strtol(buf, NULL, 0);
1652 if (net_socket_fd_init(vlan, device, name, fd, 1))
1654 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
1655 ret = net_socket_listen_init(vlan, device, name, buf);
1656 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
1657 ret = net_socket_connect_init(vlan, device, name, buf);
1658 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
1659 ret = net_socket_mcast_init(vlan, device, name, buf);
1661 fprintf(stderr, "Unknown socket options: %s\n", p);
1664 vlan->nb_host_devs++;
1667 if (!strcmp(device, "vde")) {
1668 char vde_sock[1024], vde_group[512];
1669 int vde_port, vde_mode;
1670 vlan->nb_host_devs++;
1671 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
1674 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
1675 vde_port = strtol(buf, NULL, 10);
1679 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
1680 vde_group[0] = '\0';
1682 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
1683 vde_mode = strtol(buf, NULL, 8);
1687 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
1691 fprintf(stderr, "Unknown network device: %s\n", device);
1697 fprintf(stderr, "Could not initialize device '%s'\n", device);
1704 int net_client_parse(const char *str)
1712 while (*p != '\0' && *p != ',') {
1713 if ((q - device) < sizeof(device) - 1)
1721 return net_client_init(device, p);
1724 void do_info_network(void)
1727 VLANClientState *vc;
1729 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1730 term_printf("VLAN %d devices:\n", vlan->id);
1731 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
1732 term_printf(" %s: %s\n", vc->name, vc->info_str);
1736 int do_set_link(const char *name, const char *up_or_down)
1739 VLANClientState *vc = NULL;
1741 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
1742 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
1743 if (strcmp(vc->name, name) == 0)
1748 term_printf("could not find network device '%s'", name);
1752 if (strcmp(up_or_down, "up") == 0)
1754 else if (strcmp(up_or_down, "down") == 0)
1757 term_printf("invalid link status '%s'; only 'up' or 'down' valid\n",
1760 if (vc->link_status_changed)
1761 vc->link_status_changed(vc);
1766 void net_cleanup(void)
1770 #if !defined(_WIN32)
1771 /* close network clients */
1772 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1773 VLANClientState *vc;
1775 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
1776 if (vc->fd_read == tap_receive) {
1777 TAPState *s = vc->opaque;
1779 if (s->down_script[0])
1780 launch_script(s->down_script, s->down_script_arg, s->fd);
1782 #if defined(CONFIG_VDE)
1783 if (vc->fd_read == vde_from_qemu) {
1784 VDEState *s = vc->opaque;
1793 void net_client_check(void)
1797 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1798 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
1800 if (vlan->nb_guest_devs == 0)
1801 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
1802 if (vlan->nb_host_devs == 0)
1804 "Warning: vlan %d is not connected to host network\n",