Move network redirection code out of vl.c and into net.c

Mostly code motion.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5581 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 10 insertions, 1462 deletions

diff --git a/vl.c b/vl.c
index 06968fc..4543b5d 100644
--- a/vl.c
+++ b/vl.c
@@ -210,7 +210,6 @@ CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
 int win2k_install_hack = 0;
 #endif
 int usb_enabled = 0;
-static VLANState *first_vlan;
 int smp_cpus = 1;
 const char *vnc_display;
 int acpi_enabled = 1;
@@ -1757,1244 +1756,7 @@ static int socket_init(void)
 }
 #endif
 
-/***********************************************************/
-/* network device redirectors */
-
-
-#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
-static void hex_dump(FILE *f, const uint8_t *buf, int size)
-{
-    int len, i, j, c;
-
-    for(i=0;i<size;i+=16) {
-        len = size - i;
-        if (len > 16)
-            len = 16;
-        fprintf(f, "%08x ", i);
-        for(j=0;j<16;j++) {
-            if (j < len)
-                fprintf(f, " %02x", buf[i+j]);
-            else
-                fprintf(f, "   ");
-        }
-        fprintf(f, " ");
-        for(j=0;j<len;j++) {
-            c = buf[i+j];
-            if (c < ' ' || c > '~')
-                c = '.';
-            fprintf(f, "%c", c);
-        }
-        fprintf(f, "\n");
-    }
-}
-#endif
-
-static int parse_macaddr(uint8_t *macaddr, const char *p)
-{
-    int i;
-    char *last_char;
-    long int offset;
-
-    errno = 0;
-    offset = strtol(p, &last_char, 0);    
-    if (0 == errno && '\0' == *last_char &&
-            offset >= 0 && offset <= 0xFFFFFF) {
-        macaddr[3] = (offset & 0xFF0000) >> 16;
-        macaddr[4] = (offset & 0xFF00) >> 8;
-        macaddr[5] = offset & 0xFF;
-        return 0;
-    } else {
-        for(i = 0; i < 6; i++) {
-            macaddr[i] = strtol(p, (char **)&p, 16);
-            if (i == 5) {
-                if (*p != '\0')
-                    return -1;
-            } else {
-                if (*p != ':' && *p != '-')
-                    return -1;
-                p++;
-            }
-        }
-        return 0;    
-    }
-
-    return -1;
-}
-
-static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
-{
-    const char *p, *p1;
-    int len;
-    p = *pp;
-    p1 = strchr(p, sep);
-    if (!p1)
-        return -1;
-    len = p1 - p;
-    p1++;
-    if (buf_size > 0) {
-        if (len > buf_size - 1)
-            len = buf_size - 1;
-        memcpy(buf, p, len);
-        buf[len] = '\0';
-    }
-    *pp = p1;
-    return 0;
-}
-
-int parse_host_src_port(struct sockaddr_in *haddr,
-                        struct sockaddr_in *saddr,
-                        const char *input_str)
-{
-    char *str = strdup(input_str);
-    char *host_str = str;
-    char *src_str;
-    const char *src_str2;
-    char *ptr;
-
-    /*
-     * Chop off any extra arguments at the end of the string which
-     * would start with a comma, then fill in the src port information
-     * if it was provided else use the "any address" and "any port".
-     */
-    if ((ptr = strchr(str,',')))
-        *ptr = '\0';
-
-    if ((src_str = strchr(input_str,'@'))) {
-        *src_str = '\0';
-        src_str++;
-    }
-
-    if (parse_host_port(haddr, host_str) < 0)
-        goto fail;
-
-    src_str2 = src_str;
-    if (!src_str || *src_str == '\0')
-        src_str2 = ":0";
-
-    if (parse_host_port(saddr, src_str2) < 0)
-        goto fail;
-
-    free(str);
-    return(0);
-
-fail:
-    free(str);
-    return -1;
-}
-
-int parse_host_port(struct sockaddr_in *saddr, const char *str)
-{
-    char buf[512];
-    struct hostent *he;
-    const char *p, *r;
-    int port;
-
-    p = str;
-    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
-        return -1;
-    saddr->sin_family = AF_INET;
-    if (buf[0] == '\0') {
-        saddr->sin_addr.s_addr = 0;
-    } else {
-        if (isdigit(buf[0])) {
-            if (!inet_aton(buf, &saddr->sin_addr))
-                return -1;
-        } else {
-            if ((he = gethostbyname(buf)) == NULL)
-                return - 1;
-            saddr->sin_addr = *(struct in_addr *)he->h_addr;
-        }
-    }
-    port = strtol(p, (char **)&r, 0);
-    if (r == p)
-        return -1;
-    saddr->sin_port = htons(port);
-    return 0;
-}
-
-#ifndef _WIN32
-int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
-{
-    const char *p;
-    int len;
-
-    len = MIN(108, strlen(str));
-    p = strchr(str, ',');
-    if (p)
-	len = MIN(len, p - str);
-
-    memset(uaddr, 0, sizeof(*uaddr));
-
-    uaddr->sun_family = AF_UNIX;
-    memcpy(uaddr->sun_path, str, len);
-
-    return 0;
-}
-#endif
-
-/* find or alloc a new VLAN */
-VLANState *qemu_find_vlan(int id)
-{
-    VLANState **pvlan, *vlan;
-    for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
-        if (vlan->id == id)
-            return vlan;
-    }
-    vlan = qemu_mallocz(sizeof(VLANState));
-    if (!vlan)
-        return NULL;
-    vlan->id = id;
-    vlan->next = NULL;
-    pvlan = &first_vlan;
-    while (*pvlan != NULL)
-        pvlan = &(*pvlan)->next;
-    *pvlan = vlan;
-    return vlan;
-}
-
-VLANClientState *qemu_new_vlan_client(VLANState *vlan,
-                                      IOReadHandler *fd_read,
-                                      IOCanRWHandler *fd_can_read,
-                                      void *opaque)
-{
-    VLANClientState *vc, **pvc;
-    vc = qemu_mallocz(sizeof(VLANClientState));
-    if (!vc)
-        return NULL;
-    vc->fd_read = fd_read;
-    vc->fd_can_read = fd_can_read;
-    vc->opaque = opaque;
-    vc->vlan = vlan;
-
-    vc->next = NULL;
-    pvc = &vlan->first_client;
-    while (*pvc != NULL)
-        pvc = &(*pvc)->next;
-    *pvc = vc;
-    return vc;
-}
-
-void qemu_del_vlan_client(VLANClientState *vc)
-{
-    VLANClientState **pvc = &vc->vlan->first_client;
-
-    while (*pvc != NULL)
-        if (*pvc == vc) {
-            *pvc = vc->next;
-            free(vc);
-            break;
-        } else
-            pvc = &(*pvc)->next;
-}
-
-int qemu_can_send_packet(VLANClientState *vc1)
-{
-    VLANState *vlan = vc1->vlan;
-    VLANClientState *vc;
-
-    for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
-        if (vc != vc1) {
-            if (vc->fd_can_read && vc->fd_can_read(vc->opaque))
-                return 1;
-        }
-    }
-    return 0;
-}
-
-void qemu_send_packet(VLANClientState *vc1, const uint8_t *buf, int size)
-{
-    VLANState *vlan = vc1->vlan;
-    VLANClientState *vc;
-
-#ifdef DEBUG_NET
-    printf("vlan %d send:\n", vlan->id);
-    hex_dump(stdout, buf, size);
-#endif
-    for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
-        if (vc != vc1) {
-            vc->fd_read(vc->opaque, buf, size);
-        }
-    }
-}
-
-#if defined(CONFIG_SLIRP)
-
-/* slirp network adapter */
-
-static int slirp_inited;
-static VLANClientState *slirp_vc;
-
-int slirp_can_output(void)
-{
-    return !slirp_vc || qemu_can_send_packet(slirp_vc);
-}
-
-void slirp_output(const uint8_t *pkt, int pkt_len)
-{
-#ifdef DEBUG_SLIRP
-    printf("slirp output:\n");
-    hex_dump(stdout, pkt, pkt_len);
-#endif
-    if (!slirp_vc)
-        return;
-    qemu_send_packet(slirp_vc, pkt, pkt_len);
-}
-
-static void slirp_receive(void *opaque, const uint8_t *buf, int size)
-{
-#ifdef DEBUG_SLIRP
-    printf("slirp input:\n");
-    hex_dump(stdout, buf, size);
-#endif
-    slirp_input(buf, size);
-}
-
-static int net_slirp_init(VLANState *vlan)
-{
-    if (!slirp_inited) {
-        slirp_inited = 1;
-        slirp_init();
-    }
-    slirp_vc = qemu_new_vlan_client(vlan,
-                                    slirp_receive, NULL, NULL);
-    snprintf(slirp_vc->info_str, sizeof(slirp_vc->info_str), "user redirector");
-    return 0;
-}
-
-static void net_slirp_redir(const char *redir_str)
-{
-    int is_udp;
-    char buf[256], *r;
-    const char *p;
-    struct in_addr guest_addr;
-    int host_port, guest_port;
-
-    if (!slirp_inited) {
-        slirp_inited = 1;
-        slirp_init();
-    }
-
-    p = redir_str;
-    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
-        goto fail;
-    if (!strcmp(buf, "tcp")) {
-        is_udp = 0;
-    } else if (!strcmp(buf, "udp")) {
-        is_udp = 1;
-    } else {
-        goto fail;
-    }
-
-    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
-        goto fail;
-    host_port = strtol(buf, &r, 0);
-    if (r == buf)
-        goto fail;
-
-    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
-        goto fail;
-    if (buf[0] == '\0') {
-        pstrcpy(buf, sizeof(buf), "10.0.2.15");
-    }
-    if (!inet_aton(buf, &guest_addr))
-        goto fail;
-
-    guest_port = strtol(p, &r, 0);
-    if (r == p)
-        goto fail;
-
-    if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
-        fprintf(stderr, "qemu: could not set up redirection\n");
-        exit(1);
-    }
-    return;
- fail:
-    fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
-    exit(1);
-}
-
-#ifndef _WIN32
-
-static char smb_dir[1024];
-
-static void erase_dir(char *dir_name)
-{
-    DIR *d;
-    struct dirent *de;
-    char filename[1024];
-
-    /* erase all the files in the directory */
-    if ((d = opendir(dir_name)) != 0) {
-        for(;;) {
-            de = readdir(d);
-            if (!de)
-                break;
-            if (strcmp(de->d_name, ".") != 0 &&
-                strcmp(de->d_name, "..") != 0) {
-                snprintf(filename, sizeof(filename), "%s/%s",
-                         smb_dir, de->d_name);
-                if (unlink(filename) != 0)  /* is it a directory? */
-                    erase_dir(filename);
-            }
-        }
-        closedir(d);
-        rmdir(dir_name);
-    }
-}
-
-/* automatic user mode samba server configuration */
-static void smb_exit(void)
-{
-    erase_dir(smb_dir);
-}
-
-/* automatic user mode samba server configuration */
-static void net_slirp_smb(const char *exported_dir)
-{
-    char smb_conf[1024];
-    char smb_cmdline[1024];
-    FILE *f;
-
-    if (!slirp_inited) {
-        slirp_inited = 1;
-        slirp_init();
-    }
-
-    /* XXX: better tmp dir construction */
-    snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%d", getpid());
-    if (mkdir(smb_dir, 0700) < 0) {
-        fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
-        exit(1);
-    }
-    snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
-
-    f = fopen(smb_conf, "w");
-    if (!f) {
-        fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
-        exit(1);
-    }
-    fprintf(f,
-            "[global]\n"
-            "private dir=%s\n"
-            "smb ports=0\n"
-            "socket address=127.0.0.1\n"
-            "pid directory=%s\n"
-            "lock directory=%s\n"
-            "log file=%s/log.smbd\n"
-            "smb passwd file=%s/smbpasswd\n"
-            "security = share\n"
-            "[qemu]\n"
-            "path=%s\n"
-            "read only=no\n"
-            "guest ok=yes\n",
-            smb_dir,
-            smb_dir,
-            smb_dir,
-            smb_dir,
-            smb_dir,
-            exported_dir
-            );
-    fclose(f);
-    atexit(smb_exit);
-
-    snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
-             SMBD_COMMAND, smb_conf);
-
-    slirp_add_exec(0, smb_cmdline, 4, 139);
-}
-
-#endif /* !defined(_WIN32) */
-void do_info_slirp(void)
-{
-    slirp_stats();
-}
-
-#endif /* CONFIG_SLIRP */
-
-#if !defined(_WIN32)
-
-typedef struct TAPState {
-    VLANClientState *vc;
-    int fd;
-    char down_script[1024];
-} TAPState;
-
-static void tap_receive(void *opaque, const uint8_t *buf, int size)
-{
-    TAPState *s = opaque;
-    int ret;
-    for(;;) {
-        ret = write(s->fd, buf, size);
-        if (ret < 0 && (errno == EINTR || errno == EAGAIN)) {
-        } else {
-            break;
-        }
-    }
-}
-
-static void tap_send(void *opaque)
-{
-    TAPState *s = opaque;
-    uint8_t buf[4096];
-    int size;
-
-#ifdef __sun__
-    struct strbuf sbuf;
-    int f = 0;
-    sbuf.maxlen = sizeof(buf);
-    sbuf.buf = buf;
-    size = getmsg(s->fd, NULL, &sbuf, &f) >=0 ? sbuf.len : -1;
-#else
-    size = read(s->fd, buf, sizeof(buf));
-#endif
-    if (size > 0) {
-        qemu_send_packet(s->vc, buf, size);
-    }
-}
-
-/* fd support */
-
-static TAPState *net_tap_fd_init(VLANState *vlan, int fd)
-{
-    TAPState *s;
-
-    s = qemu_mallocz(sizeof(TAPState));
-    if (!s)
-        return NULL;
-    s->fd = fd;
-    s->vc = qemu_new_vlan_client(vlan, tap_receive, NULL, s);
-    qemu_set_fd_handler(s->fd, tap_send, NULL, s);
-    snprintf(s->vc->info_str, sizeof(s->vc->info_str), "tap: fd=%d", fd);
-    return s;
-}
-
-#if defined (_BSD) || defined (__FreeBSD_kernel__)
-static int tap_open(char *ifname, int ifname_size)
-{
-    int fd;
-    char *dev;
-    struct stat s;
-
-    TFR(fd = open("/dev/tap", O_RDWR));
-    if (fd < 0) {
-        fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
-        return -1;
-    }
-
-    fstat(fd, &s);
-    dev = devname(s.st_rdev, S_IFCHR);
-    pstrcpy(ifname, ifname_size, dev);
-
-    fcntl(fd, F_SETFL, O_NONBLOCK);
-    return fd;
-}
-#elif defined(__sun__)
-#define TUNNEWPPA       (('T'<<16) | 0x0001)
-/*
- * Allocate TAP device, returns opened fd.
- * Stores dev name in the first arg(must be large enough).
- */
-int tap_alloc(char *dev, size_t dev_size)
-{
-    int tap_fd, if_fd, ppa = -1;
-    static int ip_fd = 0;
-    char *ptr;
-
-    static int arp_fd = 0;
-    int ip_muxid, arp_muxid;
-    struct strioctl  strioc_if, strioc_ppa;
-    int link_type = I_PLINK;;
-    struct lifreq ifr;
-    char actual_name[32] = "";
-
-    memset(&ifr, 0x0, sizeof(ifr));
-
-    if( *dev ){
-       ptr = dev;
-       while( *ptr && !isdigit((int)*ptr) ) ptr++;
-       ppa = atoi(ptr);
-    }
-
-    /* Check if IP device was opened */
-    if( ip_fd )
-       close(ip_fd);
-
-    TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
-    if (ip_fd < 0) {
-       syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
-       return -1;
-    }
-
-    TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
-    if (tap_fd < 0) {
-       syslog(LOG_ERR, "Can't open /dev/tap");
-       return -1;
-    }
-
-    /* Assign a new PPA and get its unit number. */
-    strioc_ppa.ic_cmd = TUNNEWPPA;
-    strioc_ppa.ic_timout = 0;
-    strioc_ppa.ic_len = sizeof(ppa);
-    strioc_ppa.ic_dp = (char *)&ppa;
-    if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
-       syslog (LOG_ERR, "Can't assign new interface");
-
-    TFR(if_fd = open("/dev/tap", O_RDWR, 0));
-    if (if_fd < 0) {
-       syslog(LOG_ERR, "Can't open /dev/tap (2)");
-       return -1;
-    }
-    if(ioctl(if_fd, I_PUSH, "ip") < 0){
-       syslog(LOG_ERR, "Can't push IP module");
-       return -1;
-    }
-
-    if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
-	syslog(LOG_ERR, "Can't get flags\n");
-
-    snprintf (actual_name, 32, "tap%d", ppa);
-    pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
-
-    ifr.lifr_ppa = ppa;
-    /* Assign ppa according to the unit number returned by tun device */
-
-    if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
-        syslog (LOG_ERR, "Can't set PPA %d", ppa);
-    if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
-        syslog (LOG_ERR, "Can't get flags\n");
-    /* Push arp module to if_fd */
-    if (ioctl (if_fd, I_PUSH, "arp") < 0)
-        syslog (LOG_ERR, "Can't push ARP module (2)");
-
-    /* Push arp module to ip_fd */
-    if (ioctl (ip_fd, I_POP, NULL) < 0)
-        syslog (LOG_ERR, "I_POP failed\n");
-    if (ioctl (ip_fd, I_PUSH, "arp") < 0)
-        syslog (LOG_ERR, "Can't push ARP module (3)\n");
-    /* Open arp_fd */
-    TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
-    if (arp_fd < 0)
-       syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
-
-    /* Set ifname to arp */
-    strioc_if.ic_cmd = SIOCSLIFNAME;
-    strioc_if.ic_timout = 0;
-    strioc_if.ic_len = sizeof(ifr);
-    strioc_if.ic_dp = (char *)&ifr;
-    if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
-        syslog (LOG_ERR, "Can't set ifname to arp\n");
-    }
-
-    if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
-       syslog(LOG_ERR, "Can't link TAP device to IP");
-       return -1;
-    }
-
-    if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
-        syslog (LOG_ERR, "Can't link TAP device to ARP");
-
-    close (if_fd);
-
-    memset(&ifr, 0x0, sizeof(ifr));
-    pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
-    ifr.lifr_ip_muxid  = ip_muxid;
-    ifr.lifr_arp_muxid = arp_muxid;
-
-    if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
-    {
-      ioctl (ip_fd, I_PUNLINK , arp_muxid);
-      ioctl (ip_fd, I_PUNLINK, ip_muxid);
-      syslog (LOG_ERR, "Can't set multiplexor id");
-    }
-
-    snprintf(dev, dev_size, "tap%d", ppa);
-    return tap_fd;
-}
-
-static int tap_open(char *ifname, int ifname_size)
-{
-    char  dev[10]="";
-    int fd;
-    if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
-       fprintf(stderr, "Cannot allocate TAP device\n");
-       return -1;
-    }
-    pstrcpy(ifname, ifname_size, dev);
-    fcntl(fd, F_SETFL, O_NONBLOCK);
-    return fd;
-}
-#else
-static int tap_open(char *ifname, int ifname_size)
-{
-    struct ifreq ifr;
-    int fd, ret;
-
-    TFR(fd = open("/dev/net/tun", O_RDWR));
-    if (fd < 0) {
-        fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
-        return -1;
-    }
-    memset(&ifr, 0, sizeof(ifr));
-    ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
-    if (ifname[0] != '\0')
-        pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
-    else
-        pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
-    ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
-    if (ret != 0) {
-        fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
-        close(fd);
-        return -1;
-    }
-    pstrcpy(ifname, ifname_size, ifr.ifr_name);
-    fcntl(fd, F_SETFL, O_NONBLOCK);
-    return fd;
-}
-#endif
-
-static int launch_script(const char *setup_script, const char *ifname, int fd)
-{
-    int pid, status;
-    char *args[3];
-    char **parg;
-
-        /* try to launch network script */
-        pid = fork();
-        if (pid >= 0) {
-            if (pid == 0) {
-                int open_max = sysconf (_SC_OPEN_MAX), i;
-                for (i = 0; i < open_max; i++)
-                    if (i != STDIN_FILENO &&
-                        i != STDOUT_FILENO &&
-                        i != STDERR_FILENO &&
-                        i != fd)
-                        close(i);
-
-                parg = args;
-                *parg++ = (char *)setup_script;
-                *parg++ = (char *)ifname;
-                *parg++ = NULL;
-                execv(setup_script, args);
-                _exit(1);
-            }
-            while (waitpid(pid, &status, 0) != pid);
-            if (!WIFEXITED(status) ||
-                WEXITSTATUS(status) != 0) {
-                fprintf(stderr, "%s: could not launch network script\n",
-                        setup_script);
-                return -1;
-            }
-        }
-    return 0;
-}
-
-static int net_tap_init(VLANState *vlan, const char *ifname1,
-                        const char *setup_script, const char *down_script)
-{
-    TAPState *s;
-    int fd;
-    char ifname[128];
-
-    if (ifname1 != NULL)
-        pstrcpy(ifname, sizeof(ifname), ifname1);
-    else
-        ifname[0] = '\0';
-    TFR(fd = tap_open(ifname, sizeof(ifname)));
-    if (fd < 0)
-        return -1;
-
-    if (!setup_script || !strcmp(setup_script, "no"))
-        setup_script = "";
-    if (setup_script[0] != '\0') {
-	if (launch_script(setup_script, ifname, fd))
-	    return -1;
-    }
-    s = net_tap_fd_init(vlan, fd);
-    if (!s)
-        return -1;
-    snprintf(s->vc->info_str, sizeof(s->vc->info_str),
-             "tap: ifname=%s setup_script=%s", ifname, setup_script);
-    if (down_script && strcmp(down_script, "no"))
-        snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
-    return 0;
-}
-
-#endif /* !_WIN32 */
-
-#if defined(CONFIG_VDE)
-typedef struct VDEState {
-    VLANClientState *vc;
-    VDECONN *vde;
-} VDEState;
-
-static void vde_to_qemu(void *opaque)
-{
-    VDEState *s = opaque;
-    uint8_t buf[4096];
-    int size;
-
-    size = vde_recv(s->vde, buf, sizeof(buf), 0);
-    if (size > 0) {
-        qemu_send_packet(s->vc, buf, size);
-    }
-}
-
-static void vde_from_qemu(void *opaque, const uint8_t *buf, int size)
-{
-    VDEState *s = opaque;
-    int ret;
-    for(;;) {
-        ret = vde_send(s->vde, buf, size, 0);
-        if (ret < 0 && errno == EINTR) {
-        } else {
-            break;
-        }
-    }
-}
-
-static int net_vde_init(VLANState *vlan, const char *sock, int port,
-                        const char *group, int mode)
-{
-    VDEState *s;
-    char *init_group = strlen(group) ? (char *)group : NULL;
-    char *init_sock = strlen(sock) ? (char *)sock : NULL;
-
-    struct vde_open_args args = {
-        .port = port,
-        .group = init_group,
-        .mode = mode,
-    };
-
-    s = qemu_mallocz(sizeof(VDEState));
-    if (!s)
-        return -1;
-    s->vde = vde_open(init_sock, "QEMU", &args);
-    if (!s->vde){
-        free(s);
-        return -1;
-    }
-    s->vc = qemu_new_vlan_client(vlan, vde_from_qemu, NULL, s);
-    qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
-    snprintf(s->vc->info_str, sizeof(s->vc->info_str), "vde: sock=%s fd=%d",
-             sock, vde_datafd(s->vde));
-    return 0;
-}
-#endif
-
-/* network connection */
-typedef struct NetSocketState {
-    VLANClientState *vc;
-    int fd;
-    int state; /* 0 = getting length, 1 = getting data */
-    int index;
-    int packet_len;
-    uint8_t buf[4096];
-    struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
-} NetSocketState;
-
-typedef struct NetSocketListenState {
-    VLANState *vlan;
-    int fd;
-} NetSocketListenState;
-
-/* XXX: we consider we can send the whole packet without blocking */
-static void net_socket_receive(void *opaque, const uint8_t *buf, int size)
-{
-    NetSocketState *s = opaque;
-    uint32_t len;
-    len = htonl(size);
-
-    send_all(s->fd, (const uint8_t *)&len, sizeof(len));
-    send_all(s->fd, buf, size);
-}
-
-static void net_socket_receive_dgram(void *opaque, const uint8_t *buf, int size)
-{
-    NetSocketState *s = opaque;
-    sendto(s->fd, buf, size, 0,
-           (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
-}
-
-static void net_socket_send(void *opaque)
-{
-    NetSocketState *s = opaque;
-    int l, size, err;
-    uint8_t buf1[4096];
-    const uint8_t *buf;
-
-    size = recv(s->fd, buf1, sizeof(buf1), 0);
-    if (size < 0) {
-        err = socket_error();
-        if (err != EWOULDBLOCK)
-            goto eoc;
-    } else if (size == 0) {
-        /* end of connection */
-    eoc:
-        qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
-        closesocket(s->fd);
-        return;
-    }
-    buf = buf1;
-    while (size > 0) {
-        /* reassemble a packet from the network */
-        switch(s->state) {
-        case 0:
-            l = 4 - s->index;
-            if (l > size)
-                l = size;
-            memcpy(s->buf + s->index, buf, l);
-            buf += l;
-            size -= l;
-            s->index += l;
-            if (s->index == 4) {
-                /* got length */
-                s->packet_len = ntohl(*(uint32_t *)s->buf);
-                s->index = 0;
-                s->state = 1;
-            }
-            break;
-        case 1:
-            l = s->packet_len - s->index;
-            if (l > size)
-                l = size;
-            memcpy(s->buf + s->index, buf, l);
-            s->index += l;
-            buf += l;
-            size -= l;
-            if (s->index >= s->packet_len) {
-                qemu_send_packet(s->vc, s->buf, s->packet_len);
-                s->index = 0;
-                s->state = 0;
-            }
-            break;
-        }
-    }
-}
-
-static void net_socket_send_dgram(void *opaque)
-{
-    NetSocketState *s = opaque;
-    int size;
-
-    size = recv(s->fd, s->buf, sizeof(s->buf), 0);
-    if (size < 0)
-        return;
-    if (size == 0) {
-        /* end of connection */
-        qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
-        return;
-    }
-    qemu_send_packet(s->vc, s->buf, size);
-}
-
-static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
-{
-    struct ip_mreq imr;
-    int fd;
-    int val, ret;
-    if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
-	fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
-		inet_ntoa(mcastaddr->sin_addr),
-                (int)ntohl(mcastaddr->sin_addr.s_addr));
-	return -1;
-
-    }
-    fd = socket(PF_INET, SOCK_DGRAM, 0);
-    if (fd < 0) {
-        perror("socket(PF_INET, SOCK_DGRAM)");
-        return -1;
-    }
-
-    val = 1;
-    ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
-                   (const char *)&val, sizeof(val));
-    if (ret < 0) {
-	perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
-	goto fail;
-    }
-
-    ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
-    if (ret < 0) {
-        perror("bind");
-        goto fail;
-    }
-
-    /* Add host to multicast group */
-    imr.imr_multiaddr = mcastaddr->sin_addr;
-    imr.imr_interface.s_addr = htonl(INADDR_ANY);
-
-    ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
-                     (const char *)&imr, sizeof(struct ip_mreq));
-    if (ret < 0) {
-	perror("setsockopt(IP_ADD_MEMBERSHIP)");
-	goto fail;
-    }
-
-    /* Force mcast msgs to loopback (eg. several QEMUs in same host */
-    val = 1;
-    ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
-                   (const char *)&val, sizeof(val));
-    if (ret < 0) {
-	perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
-	goto fail;
-    }
-
-    socket_set_nonblock(fd);
-    return fd;
-fail:
-    if (fd >= 0)
-        closesocket(fd);
-    return -1;
-}
-
-static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan, int fd,
-                                          int is_connected)
-{
-    struct sockaddr_in saddr;
-    int newfd;
-    socklen_t saddr_len;
-    NetSocketState *s;
-
-    /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
-     * Because this may be "shared" socket from a "master" process, datagrams would be recv()
-     * by ONLY ONE process: we must "clone" this dgram socket --jjo
-     */
-
-    if (is_connected) {
-	if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
-	    /* must be bound */
-	    if (saddr.sin_addr.s_addr==0) {
-		fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
-			fd);
-		return NULL;
-	    }
-	    /* clone dgram socket */
-	    newfd = net_socket_mcast_create(&saddr);
-	    if (newfd < 0) {
-		/* error already reported by net_socket_mcast_create() */
-		close(fd);
-		return NULL;
-	    }
-	    /* clone newfd to fd, close newfd */
-	    dup2(newfd, fd);
-	    close(newfd);
-
-	} else {
-	    fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
-		    fd, strerror(errno));
-	    return NULL;
-	}
-    }
-
-    s = qemu_mallocz(sizeof(NetSocketState));
-    if (!s)
-        return NULL;
-    s->fd = fd;
-
-    s->vc = qemu_new_vlan_client(vlan, net_socket_receive_dgram, NULL, s);
-    qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
-
-    /* mcast: save bound address as dst */
-    if (is_connected) s->dgram_dst=saddr;
-
-    snprintf(s->vc->info_str, sizeof(s->vc->info_str),
-	    "socket: fd=%d (%s mcast=%s:%d)",
-	    fd, is_connected? "cloned" : "",
-	    inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
-    return s;
-}
-
-static void net_socket_connect(void *opaque)
-{
-    NetSocketState *s = opaque;
-    qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
-}
-
-static NetSocketState *net_socket_fd_init_stream(VLANState *vlan, int fd,
-                                          int is_connected)
-{
-    NetSocketState *s;
-    s = qemu_mallocz(sizeof(NetSocketState));
-    if (!s)
-        return NULL;
-    s->fd = fd;
-    s->vc = qemu_new_vlan_client(vlan,
-                                 net_socket_receive, NULL, s);
-    snprintf(s->vc->info_str, sizeof(s->vc->info_str),
-             "socket: fd=%d", fd);
-    if (is_connected) {
-        net_socket_connect(s);
-    } else {
-        qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
-    }
-    return s;
-}
-
-static NetSocketState *net_socket_fd_init(VLANState *vlan, int fd,
-                                          int is_connected)
-{
-    int so_type=-1, optlen=sizeof(so_type);
-
-    if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
-        (socklen_t *)&optlen)< 0) {
-	fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
-	return NULL;
-    }
-    switch(so_type) {
-    case SOCK_DGRAM:
-        return net_socket_fd_init_dgram(vlan, fd, is_connected);
-    case SOCK_STREAM:
-        return net_socket_fd_init_stream(vlan, fd, is_connected);
-    default:
-        /* who knows ... this could be a eg. a pty, do warn and continue as stream */
-        fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
-        return net_socket_fd_init_stream(vlan, fd, is_connected);
-    }
-    return NULL;
-}
-
-static void net_socket_accept(void *opaque)
-{
-    NetSocketListenState *s = opaque;
-    NetSocketState *s1;
-    struct sockaddr_in saddr;
-    socklen_t len;
-    int fd;
-
-    for(;;) {
-        len = sizeof(saddr);
-        fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
-        if (fd < 0 && errno != EINTR) {
-            return;
-        } else if (fd >= 0) {
-            break;
-        }
-    }
-    s1 = net_socket_fd_init(s->vlan, fd, 1);
-    if (!s1) {
-        closesocket(fd);
-    } else {
-        snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
-                 "socket: connection from %s:%d",
-                 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
-    }
-}
-
-static int net_socket_listen_init(VLANState *vlan, const char *host_str)
-{
-    NetSocketListenState *s;
-    int fd, val, ret;
-    struct sockaddr_in saddr;
-
-    if (parse_host_port(&saddr, host_str) < 0)
-        return -1;
-
-    s = qemu_mallocz(sizeof(NetSocketListenState));
-    if (!s)
-        return -1;
-
-    fd = socket(PF_INET, SOCK_STREAM, 0);
-    if (fd < 0) {
-        perror("socket");
-        return -1;
-    }
-    socket_set_nonblock(fd);
-
-    /* allow fast reuse */
-    val = 1;
-    setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
-
-    ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
-    if (ret < 0) {
-        perror("bind");
-        return -1;
-    }
-    ret = listen(fd, 0);
-    if (ret < 0) {
-        perror("listen");
-        return -1;
-    }
-    s->vlan = vlan;
-    s->fd = fd;
-    qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
-    return 0;
-}
-
-static int net_socket_connect_init(VLANState *vlan, const char *host_str)
-{
-    NetSocketState *s;
-    int fd, connected, ret, err;
-    struct sockaddr_in saddr;
-
-    if (parse_host_port(&saddr, host_str) < 0)
-        return -1;
-
-    fd = socket(PF_INET, SOCK_STREAM, 0);
-    if (fd < 0) {
-        perror("socket");
-        return -1;
-    }
-    socket_set_nonblock(fd);
-
-    connected = 0;
-    for(;;) {
-        ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
-        if (ret < 0) {
-            err = socket_error();
-            if (err == EINTR || err == EWOULDBLOCK) {
-            } else if (err == EINPROGRESS) {
-                break;
-#ifdef _WIN32
-            } else if (err == WSAEALREADY) {
-                break;
-#endif
-            } else {
-                perror("connect");
-                closesocket(fd);
-                return -1;
-            }
-        } else {
-            connected = 1;
-            break;
-        }
-    }
-    s = net_socket_fd_init(vlan, fd, connected);
-    if (!s)
-        return -1;
-    snprintf(s->vc->info_str, sizeof(s->vc->info_str),
-             "socket: connect to %s:%d",
-             inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
-    return 0;
-}
-
-static int net_socket_mcast_init(VLANState *vlan, const char *host_str)
-{
-    NetSocketState *s;
-    int fd;
-    struct sockaddr_in saddr;
-
-    if (parse_host_port(&saddr, host_str) < 0)
-        return -1;
-
-
-    fd = net_socket_mcast_create(&saddr);
-    if (fd < 0)
-	return -1;
-
-    s = net_socket_fd_init(vlan, fd, 0);
-    if (!s)
-        return -1;
-
-    s->dgram_dst = saddr;
-
-    snprintf(s->vc->info_str, sizeof(s->vc->info_str),
-             "socket: mcast=%s:%d",
-             inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
-    return 0;
-
-}
-
-static const char *get_opt_name(char *buf, int buf_size, const char *p)
+const char *get_opt_name(char *buf, int buf_size, const char *p)
 {
     char *q;
 
@@ -3010,7 +1772,7 @@ static const char *get_opt_name(char *buf, int buf_size, const char *p)
     return p;
 }
 
-static const char *get_opt_value(char *buf, int buf_size, const char *p)
+const char *get_opt_value(char *buf, int buf_size, const char *p)
 {
     char *q;
 
@@ -3031,8 +1793,8 @@ static const char *get_opt_value(char *buf, int buf_size, const char *p)
     return p;
 }
 
-static int get_param_value(char *buf, int buf_size,
-                           const char *tag, const char *str)
+int get_param_value(char *buf, int buf_size,
+                    const char *tag, const char *str)
 {
     const char *p;
     char option[128];
@@ -3056,8 +1818,8 @@ static int get_param_value(char *buf, int buf_size,
     return 0;
 }
 
-static int check_params(char *buf, int buf_size,
-                        const char * const *params, const char *str)
+int check_params(char *buf, int buf_size,
+                 const char * const *params, const char *str)
 {
     const char *p;
     int i;
@@ -3081,188 +1843,6 @@ static int check_params(char *buf, int buf_size,
     return 0;
 }
 
-static int net_client_init(const char *device, const char *p)
-{
-    char buf[1024];
-    int vlan_id, ret;
-    VLANState *vlan;
-
-    vlan_id = 0;
-    if (get_param_value(buf, sizeof(buf), "vlan", p)) {
-        vlan_id = strtol(buf, NULL, 0);
-    }
-    vlan = qemu_find_vlan(vlan_id);
-    if (!vlan) {
-        fprintf(stderr, "Could not create vlan %d\n", vlan_id);
-        return -1;
-    }
-    if (!strcmp(device, "nic")) {
-        NICInfo *nd;
-        uint8_t *macaddr;
-
-        if (nb_nics >= MAX_NICS) {
-            fprintf(stderr, "Too Many NICs\n");
-            return -1;
-        }
-        nd = &nd_table[nb_nics];
-        macaddr = nd->macaddr;
-        macaddr[0] = 0x52;
-        macaddr[1] = 0x54;
-        macaddr[2] = 0x00;
-        macaddr[3] = 0x12;
-        macaddr[4] = 0x34;
-        macaddr[5] = 0x56 + nb_nics;
-
-        if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
-            if (parse_macaddr(macaddr, buf) < 0) {
-                fprintf(stderr, "invalid syntax for ethernet address\n");
-                return -1;
-            }
-        }
-        if (get_param_value(buf, sizeof(buf), "model", p)) {
-            nd->model = strdup(buf);
-        }
-        nd->vlan = vlan;
-        nb_nics++;
-        vlan->nb_guest_devs++;
-        ret = 0;
-    } else
-    if (!strcmp(device, "none")) {
-        /* does nothing. It is needed to signal that no network cards
-           are wanted */
-        ret = 0;
-    } else
-#ifdef CONFIG_SLIRP
-    if (!strcmp(device, "user")) {
-        if (get_param_value(buf, sizeof(buf), "hostname", p)) {
-            pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
-        }
-        vlan->nb_host_devs++;
-        ret = net_slirp_init(vlan);
-    } else
-#endif
-#ifdef _WIN32
-    if (!strcmp(device, "tap")) {
-        char ifname[64];
-        if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
-            fprintf(stderr, "tap: no interface name\n");
-            return -1;
-        }
-        vlan->nb_host_devs++;
-        ret = tap_win32_init(vlan, ifname);
-    } else
-#else
-    if (!strcmp(device, "tap")) {
-        char ifname[64];
-        char setup_script[1024], down_script[1024];
-        int fd;
-        vlan->nb_host_devs++;
-        if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
-            fd = strtol(buf, NULL, 0);
-            fcntl(fd, F_SETFL, O_NONBLOCK);
-            ret = -1;
-            if (net_tap_fd_init(vlan, fd))
-                ret = 0;
-        } else {
-            if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
-                ifname[0] = '\0';
-            }
-            if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
-                pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
-            }
-            if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
-                pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
-            }
-            ret = net_tap_init(vlan, ifname, setup_script, down_script);
-        }
-    } else
-#endif
-    if (!strcmp(device, "socket")) {
-        if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
-            int fd;
-            fd = strtol(buf, NULL, 0);
-            ret = -1;
-            if (net_socket_fd_init(vlan, fd, 1))
-                ret = 0;
-        } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
-            ret = net_socket_listen_init(vlan, buf);
-        } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
-            ret = net_socket_connect_init(vlan, buf);
-        } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
-            ret = net_socket_mcast_init(vlan, buf);
-        } else {
-            fprintf(stderr, "Unknown socket options: %s\n", p);
-            return -1;
-        }
-        vlan->nb_host_devs++;
-    } else
-#ifdef CONFIG_VDE
-    if (!strcmp(device, "vde")) {
-        char vde_sock[1024], vde_group[512];
-	int vde_port, vde_mode;
-        vlan->nb_host_devs++;
-        if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
-	    vde_sock[0] = '\0';
-	}
-	if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
-	    vde_port = strtol(buf, NULL, 10);
-	} else {
-	    vde_port = 0;
-	}
-	if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
-	    vde_group[0] = '\0';
-	}
-	if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
-	    vde_mode = strtol(buf, NULL, 8);
-	} else {
-	    vde_mode = 0700;
-	}
-	ret = net_vde_init(vlan, vde_sock, vde_port, vde_group, vde_mode);
-    } else
-#endif
-    {
-        fprintf(stderr, "Unknown network device: %s\n", device);
-        return -1;
-    }
-    if (ret < 0) {
-        fprintf(stderr, "Could not initialize device '%s'\n", device);
-    }
-
-    return ret;
-}
-
-static int net_client_parse(const char *str)
-{
-    const char *p;
-    char *q;
-    char device[64];
-
-    p = str;
-    q = device;
-    while (*p != '\0' && *p != ',') {
-        if ((q - device) < sizeof(device) - 1)
-            *q++ = *p;
-        p++;
-    }
-    *q = '\0';
-    if (*p == ',')
-        p++;
-
-    return net_client_init(device, p);
-}
-
-void do_info_network(void)
-{
-    VLANState *vlan;
-    VLANClientState *vc;
-
-    for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
-        term_printf("VLAN %d devices:\n", vlan->id);
-        for(vc = vlan->first_client; vc != NULL; vc = vc->next)
-            term_printf("  %s\n", vc->info_str);
-    }
-}
-
 /***********************************************************/
 /* Bluetooth support */
 static int nb_hcis;
@@ -5877,7 +4457,7 @@ void main_loop_wait(int timeout)
     tv.tv_usec = (timeout % 1000) * 1000;
 
 #if defined(CONFIG_SLIRP)
-    if (slirp_inited) {
+    if (slirp_is_inited()) {
         slirp_select_fill(&nfds, &rfds, &wfds, &xfds);
     }
 #endif
@@ -5906,7 +4486,7 @@ void main_loop_wait(int timeout)
         }
     }
 #if defined(CONFIG_SLIRP)
-    if (slirp_inited) {
+    if (slirp_is_inited()) {
         if (ret < 0) {
             FD_ZERO(&rfds);
             FD_ZERO(&wfds);
@@ -6739,7 +5319,6 @@ int main(int argc, char **argv)
     int fds[2];
     int tb_size;
     const char *pid_file = NULL;
-    VLANState *vlan;
     int autostart;
     const char *incoming = NULL;
 
@@ -7481,16 +6060,7 @@ int main(int argc, char **argv)
         if (net_client_parse(net_clients[i]) < 0)
             exit(1);
     }
-    for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
-        if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
-            continue;
-        if (vlan->nb_guest_devs == 0)
-            fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
-        if (vlan->nb_host_devs == 0)
-            fprintf(stderr,
-                    "Warning: vlan %d is not connected to host network\n",
-                    vlan->id);
-    }
+    net_client_check();
 
 #ifdef TARGET_I386
     /* XXX: this should be moved in the PC machine instantiation code */
@@ -7739,29 +6309,7 @@ int main(int argc, char **argv)
 
     main_loop();
     quit_timers();
+    net_cleanup();
 
-#if !defined(_WIN32)
-    /* close network clients */
-    for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
-        VLANClientState *vc;
-
-        for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
-            if (vc->fd_read == tap_receive) {
-                char ifname[64];
-                TAPState *s = vc->opaque;
-
-                if (sscanf(vc->info_str, "tap: ifname=%63s ", ifname) == 1 &&
-                    s->down_script[0])
-                    launch_script(s->down_script, ifname, s->fd);
-            }
-#if defined(CONFIG_VDE)
-            if (vc->fd_read == vde_from_qemu) {
-                VDEState *s = vc->opaque;
-                vde_close(s->vde);
-            }
-#endif
-        }
-    }
-#endif
     return 0;
 }