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"
121 #include "qemu-log.h"
123 #if defined(CONFIG_SLIRP)
124 #include "libslirp.h"
128 static VLANState *first_vlan;
130 /***********************************************************/
131 /* network device redirectors */
133 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
134 static void hex_dump(FILE *f, const uint8_t *buf, int size)
138 for(i=0;i<size;i+=16) {
142 fprintf(f, "%08x ", i);
145 fprintf(f, " %02x", buf[i+j]);
152 if (c < ' ' || c > '~')
161 static int parse_macaddr(uint8_t *macaddr, const char *p)
168 offset = strtol(p, &last_char, 0);
169 if (0 == errno && '\0' == *last_char &&
170 offset >= 0 && offset <= 0xFFFFFF) {
171 macaddr[3] = (offset & 0xFF0000) >> 16;
172 macaddr[4] = (offset & 0xFF00) >> 8;
173 macaddr[5] = offset & 0xFF;
176 for(i = 0; i < 6; i++) {
177 macaddr[i] = strtol(p, (char **)&p, 16);
182 if (*p != ':' && *p != '-')
193 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
204 if (len > buf_size - 1)
213 int parse_host_src_port(struct sockaddr_in *haddr,
214 struct sockaddr_in *saddr,
215 const char *input_str)
217 char *str = strdup(input_str);
218 char *host_str = str;
220 const char *src_str2;
224 * Chop off any extra arguments at the end of the string which
225 * would start with a comma, then fill in the src port information
226 * if it was provided else use the "any address" and "any port".
228 if ((ptr = strchr(str,',')))
231 if ((src_str = strchr(input_str,'@'))) {
236 if (parse_host_port(haddr, host_str) < 0)
240 if (!src_str || *src_str == '\0')
243 if (parse_host_port(saddr, src_str2) < 0)
254 int parse_host_port(struct sockaddr_in *saddr, const char *str)
262 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
264 saddr->sin_family = AF_INET;
265 if (buf[0] == '\0') {
266 saddr->sin_addr.s_addr = 0;
268 if (qemu_isdigit(buf[0])) {
269 if (!inet_aton(buf, &saddr->sin_addr))
272 if ((he = gethostbyname(buf)) == NULL)
274 saddr->sin_addr = *(struct in_addr *)he->h_addr;
277 port = strtol(p, (char **)&r, 0);
280 saddr->sin_port = htons(port);
284 #if !defined(_WIN32) && 0
285 static int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
290 len = MIN(108, strlen(str));
291 p = strchr(str, ',');
293 len = MIN(len, p - str);
295 memset(uaddr, 0, sizeof(*uaddr));
297 uaddr->sun_family = AF_UNIX;
298 memcpy(uaddr->sun_path, str, len);
304 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
306 snprintf(vc->info_str, sizeof(vc->info_str),
307 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
309 macaddr[0], macaddr[1], macaddr[2],
310 macaddr[3], macaddr[4], macaddr[5]);
313 static char *assign_name(VLANClientState *vc1, const char *model)
319 for (vlan = first_vlan; vlan; vlan = vlan->next) {
322 for (vc = vlan->first_client; vc; vc = vc->next)
323 if (vc != vc1 && strcmp(vc->model, model) == 0)
327 snprintf(buf, sizeof(buf), "%s.%d", model, id);
332 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
335 IOReadHandler *fd_read,
336 IOCanRWHandler *fd_can_read,
340 VLANClientState *vc, **pvc;
341 vc = qemu_mallocz(sizeof(VLANClientState));
342 vc->model = strdup(model);
344 vc->name = strdup(name);
346 vc->name = assign_name(vc, model);
347 vc->fd_read = fd_read;
348 vc->fd_can_read = fd_can_read;
349 vc->cleanup = cleanup;
354 pvc = &vlan->first_client;
361 void qemu_del_vlan_client(VLANClientState *vc)
363 VLANClientState **pvc = &vc->vlan->first_client;
379 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
381 VLANClientState **pvc = &vlan->first_client;
384 if ((*pvc)->opaque == opaque)
392 int qemu_can_send_packet(VLANClientState *vc1)
394 VLANState *vlan = vc1->vlan;
397 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
399 if (vc->fd_can_read && vc->fd_can_read(vc->opaque))
406 void qemu_send_packet(VLANClientState *vc1, const uint8_t *buf, int size)
408 VLANState *vlan = vc1->vlan;
415 printf("vlan %d send:\n", vlan->id);
416 hex_dump(stdout, buf, size);
418 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
419 if (vc != vc1 && !vc->link_down) {
420 vc->fd_read(vc->opaque, buf, size);
425 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
428 uint8_t buffer[4096];
432 for (i = 0; i < iovcnt; i++) {
435 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
436 memcpy(buffer + offset, iov[i].iov_base, len);
440 vc->fd_read(vc->opaque, buffer, offset);
445 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
450 for (i = 0; i < iovcnt; i++)
451 offset += iov[i].iov_len;
455 ssize_t qemu_sendv_packet(VLANClientState *vc1, const struct iovec *iov,
458 VLANState *vlan = vc1->vlan;
463 return calc_iov_length(iov, iovcnt);
465 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
472 len = calc_iov_length(iov, iovcnt);
474 len = vc->fd_readv(vc->opaque, iov, iovcnt);
475 else if (vc->fd_read)
476 len = vc_sendv_compat(vc, iov, iovcnt);
478 max_len = MAX(max_len, len);
484 #if defined(CONFIG_SLIRP)
486 /* slirp network adapter */
488 static int slirp_inited;
489 static int slirp_restrict;
490 static char *slirp_ip;
491 static VLANClientState *slirp_vc;
493 int slirp_can_output(void)
495 return !slirp_vc || qemu_can_send_packet(slirp_vc);
498 void slirp_output(const uint8_t *pkt, int pkt_len)
501 printf("slirp output:\n");
502 hex_dump(stdout, pkt, pkt_len);
506 qemu_send_packet(slirp_vc, pkt, pkt_len);
509 int slirp_is_inited(void)
514 static void slirp_receive(void *opaque, const uint8_t *buf, int size)
517 printf("slirp input:\n");
518 hex_dump(stdout, buf, size);
520 slirp_input(buf, size);
523 static int net_slirp_init(VLANState *vlan, const char *model, const char *name)
527 slirp_init(slirp_restrict, slirp_ip);
529 slirp_vc = qemu_new_vlan_client(vlan, model, name,
530 slirp_receive, NULL, NULL, NULL);
531 slirp_vc->info_str[0] = '\0';
535 void net_slirp_redir(const char *redir_str)
540 struct in_addr guest_addr;
541 int host_port, guest_port;
545 slirp_init(slirp_restrict, slirp_ip);
549 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
551 if (!strcmp(buf, "tcp")) {
553 } else if (!strcmp(buf, "udp")) {
559 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
561 host_port = strtol(buf, &r, 0);
565 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
567 if (buf[0] == '\0') {
568 pstrcpy(buf, sizeof(buf), "10.0.2.15");
570 if (!inet_aton(buf, &guest_addr))
573 guest_port = strtol(p, &r, 0);
577 if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
578 fprintf(stderr, "qemu: could not set up redirection\n");
583 fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
589 static char smb_dir[1024];
591 static void erase_dir(char *dir_name)
597 /* erase all the files in the directory */
598 if ((d = opendir(dir_name)) != NULL) {
603 if (strcmp(de->d_name, ".") != 0 &&
604 strcmp(de->d_name, "..") != 0) {
605 snprintf(filename, sizeof(filename), "%s/%s",
606 smb_dir, de->d_name);
607 if (unlink(filename) != 0) /* is it a directory? */
616 /* automatic user mode samba server configuration */
617 static void smb_exit(void)
622 /* automatic user mode samba server configuration */
623 void net_slirp_smb(const char *exported_dir)
626 char smb_cmdline[1024];
631 slirp_init(slirp_restrict, slirp_ip);
634 /* XXX: better tmp dir construction */
635 snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%ld", (long)getpid());
636 if (mkdir(smb_dir, 0700) < 0) {
637 fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
640 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
642 f = fopen(smb_conf, "w");
644 fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
651 "socket address=127.0.0.1\n"
653 "lock directory=%s\n"
654 "log file=%s/log.smbd\n"
655 "smb passwd file=%s/smbpasswd\n"
671 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
672 SMBD_COMMAND, smb_conf);
674 slirp_add_exec(0, smb_cmdline, 4, 139);
677 #endif /* !defined(_WIN32) */
678 void do_info_slirp(Monitor *mon)
688 static int vmchannel_can_read(void *opaque)
690 struct VMChannel *vmc = (struct VMChannel*)opaque;
691 return slirp_socket_can_recv(4, vmc->port);
694 static void vmchannel_read(void *opaque, const uint8_t *buf, int size)
696 struct VMChannel *vmc = (struct VMChannel*)opaque;
697 slirp_socket_recv(4, vmc->port, buf, size);
700 #endif /* CONFIG_SLIRP */
704 typedef struct TAPState {
707 char down_script[1024];
708 char down_script_arg[128];
711 static int launch_script(const char *setup_script, const char *ifname, int fd);
713 static ssize_t tap_receive_iov(void *opaque, const struct iovec *iov,
716 TAPState *s = opaque;
720 len = writev(s->fd, iov, iovcnt);
721 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
726 static void tap_receive(void *opaque, const uint8_t *buf, int size)
728 TAPState *s = opaque;
731 ret = write(s->fd, buf, size);
732 if (ret < 0 && (errno == EINTR || errno == EAGAIN)) {
739 static void tap_send(void *opaque)
741 TAPState *s = opaque;
748 sbuf.maxlen = sizeof(buf);
749 sbuf.buf = (char *)buf;
750 size = getmsg(s->fd, NULL, &sbuf, &f) >=0 ? sbuf.len : -1;
752 size = read(s->fd, buf, sizeof(buf));
755 qemu_send_packet(s->vc, buf, size);
759 static void tap_cleanup(VLANClientState *vc)
761 TAPState *s = vc->opaque;
763 if (s->down_script[0])
764 launch_script(s->down_script, s->down_script_arg, s->fd);
766 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
773 static TAPState *net_tap_fd_init(VLANState *vlan,
780 s = qemu_mallocz(sizeof(TAPState));
782 s->vc = qemu_new_vlan_client(vlan, model, name, tap_receive,
783 NULL, tap_cleanup, s);
784 s->vc->fd_readv = tap_receive_iov;
785 qemu_set_fd_handler(s->fd, tap_send, NULL, s);
786 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
790 #if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
791 static int tap_open(char *ifname, int ifname_size)
797 TFR(fd = open("/dev/tap", O_RDWR));
799 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
804 dev = devname(s.st_rdev, S_IFCHR);
805 pstrcpy(ifname, ifname_size, dev);
807 fcntl(fd, F_SETFL, O_NONBLOCK);
810 #elif defined(__sun__)
811 #define TUNNEWPPA (('T'<<16) | 0x0001)
813 * Allocate TAP device, returns opened fd.
814 * Stores dev name in the first arg(must be large enough).
816 static int tap_alloc(char *dev, size_t dev_size)
818 int tap_fd, if_fd, ppa = -1;
819 static int ip_fd = 0;
822 static int arp_fd = 0;
823 int ip_muxid, arp_muxid;
824 struct strioctl strioc_if, strioc_ppa;
825 int link_type = I_PLINK;;
827 char actual_name[32] = "";
829 memset(&ifr, 0x0, sizeof(ifr));
833 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
837 /* Check if IP device was opened */
841 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
843 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
847 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
849 syslog(LOG_ERR, "Can't open /dev/tap");
853 /* Assign a new PPA and get its unit number. */
854 strioc_ppa.ic_cmd = TUNNEWPPA;
855 strioc_ppa.ic_timout = 0;
856 strioc_ppa.ic_len = sizeof(ppa);
857 strioc_ppa.ic_dp = (char *)&ppa;
858 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
859 syslog (LOG_ERR, "Can't assign new interface");
861 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
863 syslog(LOG_ERR, "Can't open /dev/tap (2)");
866 if(ioctl(if_fd, I_PUSH, "ip") < 0){
867 syslog(LOG_ERR, "Can't push IP module");
871 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
872 syslog(LOG_ERR, "Can't get flags\n");
874 snprintf (actual_name, 32, "tap%d", ppa);
875 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
878 /* Assign ppa according to the unit number returned by tun device */
880 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
881 syslog (LOG_ERR, "Can't set PPA %d", ppa);
882 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
883 syslog (LOG_ERR, "Can't get flags\n");
884 /* Push arp module to if_fd */
885 if (ioctl (if_fd, I_PUSH, "arp") < 0)
886 syslog (LOG_ERR, "Can't push ARP module (2)");
888 /* Push arp module to ip_fd */
889 if (ioctl (ip_fd, I_POP, NULL) < 0)
890 syslog (LOG_ERR, "I_POP failed\n");
891 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
892 syslog (LOG_ERR, "Can't push ARP module (3)\n");
894 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
896 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
898 /* Set ifname to arp */
899 strioc_if.ic_cmd = SIOCSLIFNAME;
900 strioc_if.ic_timout = 0;
901 strioc_if.ic_len = sizeof(ifr);
902 strioc_if.ic_dp = (char *)𝔦
903 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
904 syslog (LOG_ERR, "Can't set ifname to arp\n");
907 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
908 syslog(LOG_ERR, "Can't link TAP device to IP");
912 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
913 syslog (LOG_ERR, "Can't link TAP device to ARP");
917 memset(&ifr, 0x0, sizeof(ifr));
918 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
919 ifr.lifr_ip_muxid = ip_muxid;
920 ifr.lifr_arp_muxid = arp_muxid;
922 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
924 ioctl (ip_fd, I_PUNLINK , arp_muxid);
925 ioctl (ip_fd, I_PUNLINK, ip_muxid);
926 syslog (LOG_ERR, "Can't set multiplexor id");
929 snprintf(dev, dev_size, "tap%d", ppa);
933 static int tap_open(char *ifname, int ifname_size)
937 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
938 fprintf(stderr, "Cannot allocate TAP device\n");
941 pstrcpy(ifname, ifname_size, dev);
942 fcntl(fd, F_SETFL, O_NONBLOCK);
946 static int tap_open(char *ifname, int ifname_size)
948 fprintf (stderr, "no tap on AIX\n");
952 static int tap_open(char *ifname, int ifname_size)
957 TFR(fd = open("/dev/net/tun", O_RDWR));
959 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
962 memset(&ifr, 0, sizeof(ifr));
963 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
964 if (ifname[0] != '\0')
965 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
967 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
968 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
970 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
974 pstrcpy(ifname, ifname_size, ifr.ifr_name);
975 fcntl(fd, F_SETFL, O_NONBLOCK);
980 static int launch_script(const char *setup_script, const char *ifname, int fd)
986 /* try to launch network script */
990 int open_max = sysconf (_SC_OPEN_MAX), i;
991 for (i = 0; i < open_max; i++)
992 if (i != STDIN_FILENO &&
993 i != STDOUT_FILENO &&
994 i != STDERR_FILENO &&
999 *parg++ = (char *)setup_script;
1000 *parg++ = (char *)ifname;
1002 execv(setup_script, args);
1005 while (waitpid(pid, &status, 0) != pid);
1006 if (!WIFEXITED(status) ||
1007 WEXITSTATUS(status) != 0) {
1008 fprintf(stderr, "%s: could not launch network script\n",
1016 static int net_tap_init(VLANState *vlan, const char *model,
1017 const char *name, const char *ifname1,
1018 const char *setup_script, const char *down_script)
1024 if (ifname1 != NULL)
1025 pstrcpy(ifname, sizeof(ifname), ifname1);
1028 TFR(fd = tap_open(ifname, sizeof(ifname)));
1032 if (!setup_script || !strcmp(setup_script, "no"))
1034 if (setup_script[0] != '\0') {
1035 if (launch_script(setup_script, ifname, fd))
1038 s = net_tap_fd_init(vlan, model, name, fd);
1039 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1040 "ifname=%s,script=%s,downscript=%s",
1041 ifname, setup_script, down_script);
1042 if (down_script && strcmp(down_script, "no")) {
1043 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1044 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1049 #endif /* !_WIN32 */
1051 #if defined(CONFIG_VDE)
1052 typedef struct VDEState {
1053 VLANClientState *vc;
1057 static void vde_to_qemu(void *opaque)
1059 VDEState *s = opaque;
1063 size = vde_recv(s->vde, buf, sizeof(buf), 0);
1065 qemu_send_packet(s->vc, buf, size);
1069 static void vde_from_qemu(void *opaque, const uint8_t *buf, int size)
1071 VDEState *s = opaque;
1074 ret = vde_send(s->vde, buf, size, 0);
1075 if (ret < 0 && errno == EINTR) {
1082 static void vde_cleanup(VLANClientState *vc)
1084 VDEState *s = vc->opaque;
1085 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1090 static int net_vde_init(VLANState *vlan, const char *model,
1091 const char *name, const char *sock,
1092 int port, const char *group, int mode)
1095 char *init_group = strlen(group) ? (char *)group : NULL;
1096 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1098 struct vde_open_args args = {
1100 .group = init_group,
1104 s = qemu_mallocz(sizeof(VDEState));
1105 s->vde = vde_open(init_sock, "QEMU", &args);
1110 s->vc = qemu_new_vlan_client(vlan, model, name, vde_from_qemu,
1111 NULL, vde_cleanup, s);
1112 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1113 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1114 sock, vde_datafd(s->vde));
1119 /* network connection */
1120 typedef struct NetSocketState {
1121 VLANClientState *vc;
1123 int state; /* 0 = getting length, 1 = getting data */
1125 unsigned int packet_len;
1127 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1130 typedef struct NetSocketListenState {
1135 } NetSocketListenState;
1137 /* XXX: we consider we can send the whole packet without blocking */
1138 static void net_socket_receive(void *opaque, const uint8_t *buf, int size)
1140 NetSocketState *s = opaque;
1144 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1145 send_all(s->fd, buf, size);
1148 static void net_socket_receive_dgram(void *opaque, const uint8_t *buf, int size)
1150 NetSocketState *s = opaque;
1151 sendto(s->fd, buf, size, 0,
1152 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1155 static void net_socket_send(void *opaque)
1157 NetSocketState *s = opaque;
1163 size = recv(s->fd, buf1, sizeof(buf1), 0);
1165 err = socket_error();
1166 if (err != EWOULDBLOCK)
1168 } else if (size == 0) {
1169 /* end of connection */
1171 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1177 /* reassemble a packet from the network */
1183 memcpy(s->buf + s->index, buf, l);
1187 if (s->index == 4) {
1189 s->packet_len = ntohl(*(uint32_t *)s->buf);
1195 l = s->packet_len - s->index;
1198 if (s->index + l <= sizeof(s->buf)) {
1199 memcpy(s->buf + s->index, buf, l);
1201 fprintf(stderr, "serious error: oversized packet received,"
1202 "connection terminated.\n");
1210 if (s->index >= s->packet_len) {
1211 qemu_send_packet(s->vc, s->buf, s->packet_len);
1220 static void net_socket_send_dgram(void *opaque)
1222 NetSocketState *s = opaque;
1225 size = recv(s->fd, s->buf, sizeof(s->buf), 0);
1229 /* end of connection */
1230 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1233 qemu_send_packet(s->vc, s->buf, size);
1236 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1241 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1242 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1243 inet_ntoa(mcastaddr->sin_addr),
1244 (int)ntohl(mcastaddr->sin_addr.s_addr));
1248 fd = socket(PF_INET, SOCK_DGRAM, 0);
1250 perror("socket(PF_INET, SOCK_DGRAM)");
1255 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1256 (const char *)&val, sizeof(val));
1258 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1262 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1268 /* Add host to multicast group */
1269 imr.imr_multiaddr = mcastaddr->sin_addr;
1270 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1272 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1273 (const char *)&imr, sizeof(struct ip_mreq));
1275 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1279 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1281 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1282 (const char *)&val, sizeof(val));
1284 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1288 socket_set_nonblock(fd);
1296 static void net_socket_cleanup(VLANClientState *vc)
1298 NetSocketState *s = vc->opaque;
1299 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1304 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1307 int fd, int is_connected)
1309 struct sockaddr_in saddr;
1311 socklen_t saddr_len;
1314 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1315 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1316 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1320 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1322 if (saddr.sin_addr.s_addr==0) {
1323 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1327 /* clone dgram socket */
1328 newfd = net_socket_mcast_create(&saddr);
1330 /* error already reported by net_socket_mcast_create() */
1334 /* clone newfd to fd, close newfd */
1339 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1340 fd, strerror(errno));
1345 s = qemu_mallocz(sizeof(NetSocketState));
1348 s->vc = qemu_new_vlan_client(vlan, model, name, net_socket_receive_dgram,
1349 NULL, net_socket_cleanup, s);
1350 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1352 /* mcast: save bound address as dst */
1353 if (is_connected) s->dgram_dst=saddr;
1355 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1356 "socket: fd=%d (%s mcast=%s:%d)",
1357 fd, is_connected? "cloned" : "",
1358 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1362 static void net_socket_connect(void *opaque)
1364 NetSocketState *s = opaque;
1365 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1368 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
1371 int fd, int is_connected)
1374 s = qemu_mallocz(sizeof(NetSocketState));
1376 s->vc = qemu_new_vlan_client(vlan, model, name, net_socket_receive,
1377 NULL, net_socket_cleanup, s);
1378 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1379 "socket: fd=%d", fd);
1381 net_socket_connect(s);
1383 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1388 static NetSocketState *net_socket_fd_init(VLANState *vlan,
1389 const char *model, const char *name,
1390 int fd, int is_connected)
1392 int so_type=-1, optlen=sizeof(so_type);
1394 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
1395 (socklen_t *)&optlen)< 0) {
1396 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
1401 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
1403 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1405 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
1406 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
1407 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1412 static void net_socket_accept(void *opaque)
1414 NetSocketListenState *s = opaque;
1416 struct sockaddr_in saddr;
1421 len = sizeof(saddr);
1422 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
1423 if (fd < 0 && errno != EINTR) {
1425 } else if (fd >= 0) {
1429 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
1433 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
1434 "socket: connection from %s:%d",
1435 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1439 static int net_socket_listen_init(VLANState *vlan,
1442 const char *host_str)
1444 NetSocketListenState *s;
1446 struct sockaddr_in saddr;
1448 if (parse_host_port(&saddr, host_str) < 0)
1451 s = qemu_mallocz(sizeof(NetSocketListenState));
1453 fd = socket(PF_INET, SOCK_STREAM, 0);
1458 socket_set_nonblock(fd);
1460 /* allow fast reuse */
1462 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
1464 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1469 ret = listen(fd, 0);
1475 s->model = strdup(model);
1476 s->name = name ? strdup(name) : NULL;
1478 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
1482 static int net_socket_connect_init(VLANState *vlan,
1485 const char *host_str)
1488 int fd, connected, ret, err;
1489 struct sockaddr_in saddr;
1491 if (parse_host_port(&saddr, host_str) < 0)
1494 fd = socket(PF_INET, SOCK_STREAM, 0);
1499 socket_set_nonblock(fd);
1503 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1505 err = socket_error();
1506 if (err == EINTR || err == EWOULDBLOCK) {
1507 } else if (err == EINPROGRESS) {
1510 } else if (err == WSAEALREADY) {
1523 s = net_socket_fd_init(vlan, model, name, fd, connected);
1526 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1527 "socket: connect to %s:%d",
1528 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1532 static int net_socket_mcast_init(VLANState *vlan,
1535 const char *host_str)
1539 struct sockaddr_in saddr;
1541 if (parse_host_port(&saddr, host_str) < 0)
1545 fd = net_socket_mcast_create(&saddr);
1549 s = net_socket_fd_init(vlan, model, name, fd, 0);
1553 s->dgram_dst = saddr;
1555 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1556 "socket: mcast=%s:%d",
1557 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1562 typedef struct DumpState {
1563 VLANClientState *pcap_vc;
1568 #define PCAP_MAGIC 0xa1b2c3d4
1570 struct pcap_file_hdr {
1572 uint16_t version_major;
1573 uint16_t version_minor;
1580 struct pcap_sf_pkthdr {
1589 static void dump_receive(void *opaque, const uint8_t *buf, int size)
1591 DumpState *s = opaque;
1592 struct pcap_sf_pkthdr hdr;
1596 /* Early return in case of previous error. */
1601 ts = muldiv64 (qemu_get_clock(vm_clock),1000000, ticks_per_sec);
1602 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
1604 hdr.ts.tv_sec = ts / 1000000000LL;
1605 hdr.ts.tv_usec = ts % 1000000;
1606 hdr.caplen = caplen;
1608 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
1609 write(s->fd, buf, caplen) != caplen) {
1610 qemu_log("-net dump write error - stop dump\n");
1616 static void net_dump_cleanup(VLANClientState *vc)
1618 DumpState *s = vc->opaque;
1624 static int net_dump_init(VLANState *vlan, const char *device,
1625 const char *name, const char *filename, int len)
1627 struct pcap_file_hdr hdr;
1630 s = qemu_malloc(sizeof(DumpState));
1632 s->fd = open(filename, O_CREAT | O_WRONLY, 0644);
1634 fprintf(stderr, "-net dump: can't open %s\n", filename);
1638 s->pcap_caplen = len;
1640 hdr.magic = PCAP_MAGIC;
1641 hdr.version_major = 2;
1642 hdr.version_minor = 4;
1645 hdr.snaplen = s->pcap_caplen;
1648 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
1649 perror("-net dump write error");
1655 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, dump_receive, NULL,
1656 net_dump_cleanup, s);
1657 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
1658 "dump to %s (len=%d)", filename, len);
1662 /* find or alloc a new VLAN */
1663 VLANState *qemu_find_vlan(int id)
1665 VLANState **pvlan, *vlan;
1666 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1670 vlan = qemu_mallocz(sizeof(VLANState));
1673 pvlan = &first_vlan;
1674 while (*pvlan != NULL)
1675 pvlan = &(*pvlan)->next;
1680 static int nic_get_free_idx(void)
1684 for (index = 0; index < MAX_NICS; index++)
1685 if (!nd_table[index].used)
1690 void qemu_check_nic_model(NICInfo *nd, const char *model)
1692 const char *models[2];
1697 qemu_check_nic_model_list(nd, models, model);
1700 void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
1701 const char *default_model)
1703 int i, exit_status = 0;
1706 nd->model = strdup(default_model);
1708 if (strcmp(nd->model, "?") != 0) {
1709 for (i = 0 ; models[i]; i++)
1710 if (strcmp(nd->model, models[i]) == 0)
1713 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
1717 fprintf(stderr, "qemu: Supported NIC models: ");
1718 for (i = 0 ; models[i]; i++)
1719 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
1724 int net_client_init(const char *device, const char *p)
1726 static const char * const fd_params[] = {
1727 "vlan", "name", "fd", NULL
1735 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
1736 vlan_id = strtol(buf, NULL, 0);
1738 vlan = qemu_find_vlan(vlan_id);
1740 if (get_param_value(buf, sizeof(buf), "name", p)) {
1743 if (!strcmp(device, "nic")) {
1744 static const char * const nic_params[] = {
1745 "vlan", "name", "macaddr", "model", NULL
1749 int idx = nic_get_free_idx();
1751 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
1752 fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
1756 if (idx == -1 || nb_nics >= MAX_NICS) {
1757 fprintf(stderr, "Too Many NICs\n");
1761 nd = &nd_table[idx];
1762 macaddr = nd->macaddr;
1768 macaddr[5] = 0x56 + idx;
1770 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
1771 if (parse_macaddr(macaddr, buf) < 0) {
1772 fprintf(stderr, "invalid syntax for ethernet address\n");
1777 if (get_param_value(buf, sizeof(buf), "model", p)) {
1778 nd->model = strdup(buf);
1785 vlan->nb_guest_devs++;
1788 if (!strcmp(device, "none")) {
1790 fprintf(stderr, "qemu: 'none' takes no parameters\n");
1793 /* does nothing. It is needed to signal that no network cards
1798 if (!strcmp(device, "user")) {
1799 static const char * const slirp_params[] = {
1800 "vlan", "name", "hostname", "restrict", "ip", NULL
1802 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
1803 fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
1807 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
1808 pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
1810 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
1811 slirp_restrict = (buf[0] == 'y') ? 1 : 0;
1813 if (get_param_value(buf, sizeof(buf), "ip", p)) {
1814 slirp_ip = strdup(buf);
1816 vlan->nb_host_devs++;
1817 ret = net_slirp_init(vlan, device, name);
1818 } else if (!strcmp(device, "channel")) {
1820 char name[20], *devname;
1821 struct VMChannel *vmc;
1823 port = strtol(p, &devname, 10);
1825 if (port < 1 || port > 65535) {
1826 fprintf(stderr, "vmchannel wrong port number\n");
1830 vmc = malloc(sizeof(struct VMChannel));
1831 snprintf(name, 20, "vmchannel%ld", port);
1832 vmc->hd = qemu_chr_open(name, devname, NULL);
1834 fprintf(stderr, "qemu: could not open vmchannel device"
1840 slirp_add_exec(3, vmc->hd, 4, port);
1841 qemu_chr_add_handlers(vmc->hd, vmchannel_can_read, vmchannel_read,
1847 if (!strcmp(device, "tap")) {
1848 static const char * const tap_params[] = {
1849 "vlan", "name", "ifname", NULL
1853 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
1854 fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
1858 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
1859 fprintf(stderr, "tap: no interface name\n");
1863 vlan->nb_host_devs++;
1864 ret = tap_win32_init(vlan, device, name, ifname);
1866 #elif defined (_AIX)
1868 if (!strcmp(device, "tap")) {
1870 char setup_script[1024], down_script[1024];
1872 vlan->nb_host_devs++;
1873 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
1874 if (check_params(buf, sizeof(buf), fd_params, p) < 0) {
1875 fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
1879 fd = strtol(buf, NULL, 0);
1880 fcntl(fd, F_SETFL, O_NONBLOCK);
1881 net_tap_fd_init(vlan, device, name, fd);
1884 static const char * const tap_params[] = {
1885 "vlan", "name", "ifname", "script", "downscript", NULL
1887 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
1888 fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
1892 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
1895 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
1896 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
1898 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
1899 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
1901 ret = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
1905 if (!strcmp(device, "socket")) {
1906 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
1908 if (check_params(buf, sizeof(buf), fd_params, p) < 0) {
1909 fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
1913 fd = strtol(buf, NULL, 0);
1915 if (net_socket_fd_init(vlan, device, name, fd, 1))
1917 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
1918 static const char * const listen_params[] = {
1919 "vlan", "name", "listen", NULL
1921 if (check_params(buf, sizeof(buf), listen_params, p) < 0) {
1922 fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
1926 ret = net_socket_listen_init(vlan, device, name, buf);
1927 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
1928 static const char * const connect_params[] = {
1929 "vlan", "name", "connect", NULL
1931 if (check_params(buf, sizeof(buf), connect_params, p) < 0) {
1932 fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
1936 ret = net_socket_connect_init(vlan, device, name, buf);
1937 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
1938 static const char * const mcast_params[] = {
1939 "vlan", "name", "mcast", NULL
1941 if (check_params(buf, sizeof(buf), mcast_params, p) < 0) {
1942 fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
1946 ret = net_socket_mcast_init(vlan, device, name, buf);
1948 fprintf(stderr, "Unknown socket options: %s\n", p);
1952 vlan->nb_host_devs++;
1955 if (!strcmp(device, "vde")) {
1956 static const char * const vde_params[] = {
1957 "vlan", "name", "sock", "port", "group", "mode", NULL
1959 char vde_sock[1024], vde_group[512];
1960 int vde_port, vde_mode;
1962 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
1963 fprintf(stderr, "qemu: invalid parameter '%s' in '%s'\n",
1967 vlan->nb_host_devs++;
1968 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
1971 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
1972 vde_port = strtol(buf, NULL, 10);
1976 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
1977 vde_group[0] = '\0';
1979 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
1980 vde_mode = strtol(buf, NULL, 8);
1984 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
1987 if (!strcmp(device, "dump")) {
1990 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
1991 len = strtol(buf, NULL, 0);
1993 if (!get_param_value(buf, sizeof(buf), "file", p)) {
1994 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
1996 ret = net_dump_init(vlan, device, name, buf, len);
1998 fprintf(stderr, "Unknown network device: %s\n", device);
2003 fprintf(stderr, "Could not initialize device '%s'\n", device);
2011 void net_client_uninit(NICInfo *nd)
2013 nd->vlan->nb_guest_devs--;
2016 free((void *)nd->model);
2019 static int net_host_check_device(const char *device)
2022 const char *valid_param_list[] = { "tap", "socket", "dump"
2030 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2031 if (!strncmp(valid_param_list[i], device,
2032 strlen(valid_param_list[i])))
2039 void net_host_device_add(Monitor *mon, const char *device, const char *opts)
2041 if (!net_host_check_device(device)) {
2042 monitor_printf(mon, "invalid host network device %s\n", device);
2045 net_client_init(device, opts);
2048 void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
2051 VLANClientState *vc;
2053 vlan = qemu_find_vlan(vlan_id);
2055 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
2056 if (!strcmp(vc->name, device)) {
2062 monitor_printf(mon, "can't find device %s\n", device);
2065 if (!net_host_check_device(vc->model)) {
2066 monitor_printf(mon, "invalid host network device %s\n", device);
2069 qemu_del_vlan_client(vc);
2072 int net_client_parse(const char *str)
2080 while (*p != '\0' && *p != ',') {
2081 if ((q - device) < sizeof(device) - 1)
2089 return net_client_init(device, p);
2092 void do_info_network(Monitor *mon)
2095 VLANClientState *vc;
2097 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2098 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
2099 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
2100 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
2104 int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
2107 VLANClientState *vc = NULL;
2109 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2110 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2111 if (strcmp(vc->name, name) == 0)
2116 monitor_printf(mon, "could not find network device '%s'", name);
2120 if (strcmp(up_or_down, "up") == 0)
2122 else if (strcmp(up_or_down, "down") == 0)
2125 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2126 "valid\n", up_or_down);
2128 if (vc->link_status_changed)
2129 vc->link_status_changed(vc);
2134 void net_cleanup(void)
2138 /* close network clients */
2139 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2140 VLANClientState *vc = vlan->first_client;
2143 VLANClientState *next = vc->next;
2145 qemu_del_vlan_client(vc);
2152 void net_client_check(void)
2156 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2157 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2159 if (vlan->nb_guest_devs == 0)
2160 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2161 if (vlan->nb_host_devs == 0)
2163 "Warning: vlan %d is not connected to host network\n",