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net.c 65.7 KB
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/*
 * QEMU System Emulator
 *
 * Copyright (c) 2003-2008 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <time.h>
#include <errno.h>
#include <sys/time.h>
#include <zlib.h>
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/* Needed early for HOST_BSD etc. */
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#include "config-host.h"
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#ifndef _WIN32
#include <sys/times.h>
#include <sys/wait.h>
#include <termios.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
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#include <sys/resource.h>
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#include <sys/socket.h>
#include <netinet/in.h>
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#include <net/if.h>
#ifdef __NetBSD__
#include <net/if_tap.h>
#endif
#ifdef __linux__
#include <linux/if_tun.h>
#endif
#include <arpa/inet.h>
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#include <dirent.h>
#include <netdb.h>
#include <sys/select.h>
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#ifdef HOST_BSD
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#include <sys/stat.h>
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#if defined(__FreeBSD__) || defined(__DragonFly__)
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#include <libutil.h>
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#else
#include <util.h>
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#endif
#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
#include <freebsd/stdlib.h>
#else
#ifdef __linux__
#include <pty.h>
#include <malloc.h>
#include <linux/rtc.h>

/* For the benefit of older linux systems which don't supply it,
   we use a local copy of hpet.h. */
/* #include <linux/hpet.h> */
#include "hpet.h"

#include <linux/ppdev.h>
#include <linux/parport.h>
#endif
#ifdef __sun__
#include <sys/stat.h>
#include <sys/ethernet.h>
#include <sys/sockio.h>
#include <netinet/arp.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h> // must come after ip.h
#include <netinet/udp.h>
#include <netinet/tcp.h>
#include <net/if.h>
#include <syslog.h>
#include <stropts.h>
#endif
#endif
#endif

#if defined(__OpenBSD__)
#include <util.h>
#endif

#if defined(CONFIG_VDE)
#include <libvdeplug.h>
#endif

#ifdef _WIN32
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#include <windows.h>
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#include <malloc.h>
#include <sys/timeb.h>
#include <mmsystem.h>
#define getopt_long_only getopt_long
#define memalign(align, size) malloc(size)
#endif
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#include "qemu-common.h"
#include "net.h"
#include "monitor.h"
#include "sysemu.h"
#include "qemu-timer.h"
#include "qemu-char.h"
#include "audio/audio.h"
#include "qemu_socket.h"
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#include "qemu-log.h"
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#if defined(CONFIG_SLIRP)
#include "libslirp.h"
#endif
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static VLANState *first_vlan;

/***********************************************************/
/* 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 {
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        if (qemu_isdigit(buf[0])) {
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            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;
}
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#if !defined(_WIN32) && 0
static int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
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{
    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
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void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
{
    snprintf(vc->info_str, sizeof(vc->info_str),
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             "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
             vc->model,
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             macaddr[0], macaddr[1], macaddr[2],
             macaddr[3], macaddr[4], macaddr[5]);
}
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static char *assign_name(VLANClientState *vc1, const char *model)
{
    VLANState *vlan;
    char buf[256];
    int id = 0;

    for (vlan = first_vlan; vlan; vlan = vlan->next) {
        VLANClientState *vc;

        for (vc = vlan->first_client; vc; vc = vc->next)
            if (vc != vc1 && strcmp(vc->model, model) == 0)
                id++;
    }

    snprintf(buf, sizeof(buf), "%s.%d", model, id);

    return strdup(buf);
}
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VLANClientState *qemu_new_vlan_client(VLANState *vlan,
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                                      const char *model,
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                                      const char *name,
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                                      NetCanReceive *can_receive,
                                      NetReceive *receive,
                                      NetReceiveIOV *receive_iov,
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                                      NetCleanup *cleanup,
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                                      void *opaque)
{
    VLANClientState *vc, **pvc;
    vc = qemu_mallocz(sizeof(VLANClientState));
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    vc->model = strdup(model);
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    if (name)
        vc->name = strdup(name);
    else
        vc->name = assign_name(vc, model);
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    vc->can_receive = can_receive;
    vc->receive = receive;
    vc->receive_iov = receive_iov;
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    vc->cleanup = cleanup;
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    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;
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            if (vc->cleanup) {
                vc->cleanup(vc);
            }
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            free(vc->name);
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            free(vc->model);
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            qemu_free(vc);
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            break;
        } else
            pvc = &(*pvc)->next;
}
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VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
{
    VLANClientState **pvc = &vlan->first_client;

    while (*pvc != NULL)
        if ((*pvc)->opaque == opaque)
            return *pvc;
        else
            pvc = &(*pvc)->next;

    return NULL;
}
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int qemu_can_send_packet(VLANClientState *sender)
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{
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    VLANState *vlan = sender->vlan;
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    VLANClientState *vc;
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    for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
        if (vc == sender) {
            continue;
        }
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        /* no can_receive() handler, they can always receive */
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        if (!vc->can_receive || vc->can_receive(vc)) {
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            return 1;
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        }
    }
    return 0;
}
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static int
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qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
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{
    VLANClientState *vc;
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    int ret = -1;
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    sender->vlan->delivering = 1;
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    for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
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        ssize_t len;

        if (vc == sender) {
            continue;
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        }
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        if (vc->link_down) {
            ret = size;
            continue;
        }

        len = vc->receive(vc, buf, size);

        ret = (ret >= 0) ? ret : len;
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    }
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    sender->vlan->delivering = 0;
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    return ret;
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}
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void qemu_flush_queued_packets(VLANClientState *vc)
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{
    VLANPacket *packet;

    while ((packet = vc->vlan->send_queue) != NULL) {
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        int ret;
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        vc->vlan->send_queue = packet->next;
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        ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
        if (ret == 0 && packet->sent_cb != NULL) {
            packet->next = vc->vlan->send_queue;
            vc->vlan->send_queue = packet;
            break;
        }

        if (packet->sent_cb)
            packet->sent_cb(packet->sender);
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        qemu_free(packet);
    }
}
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static void qemu_enqueue_packet(VLANClientState *sender,
                                const uint8_t *buf, int size,
                                NetPacketSent *sent_cb)
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{
    VLANPacket *packet;

    packet = qemu_malloc(sizeof(VLANPacket) + size);
    packet->next = sender->vlan->send_queue;
    packet->sender = sender;
    packet->size = size;
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    packet->sent_cb = sent_cb;
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    memcpy(packet->data, buf, size);
    sender->vlan->send_queue = packet;
}
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ssize_t qemu_send_packet_async(VLANClientState *sender,
                               const uint8_t *buf, int size,
                               NetPacketSent *sent_cb)
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{
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    int ret;
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    if (sender->link_down) {
        return size;
    }
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#ifdef DEBUG_NET
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    printf("vlan %d send:\n", sender->vlan->id);
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    hex_dump(stdout, buf, size);
#endif
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    if (sender->vlan->delivering) {
        qemu_enqueue_packet(sender, buf, size, NULL);
        return size;
    }

    ret = qemu_deliver_packet(sender, buf, size);
    if (ret == 0 && sent_cb != NULL) {
        qemu_enqueue_packet(sender, buf, size, sent_cb);
        return 0;
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    }
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    qemu_flush_queued_packets(sender);

    return ret;
}

void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
{
    qemu_send_packet_async(vc, buf, size, NULL);
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}
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static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
                               int iovcnt)
{
    uint8_t buffer[4096];
    size_t offset = 0;
    int i;

    for (i = 0; i < iovcnt; i++) {
        size_t len;

        len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
        memcpy(buffer + offset, iov[i].iov_base, len);
        offset += len;
    }
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    return vc->receive(vc, buffer, offset);
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}
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static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
{
    size_t offset = 0;
    int i;

    for (i = 0; i < iovcnt; i++)
        offset += iov[i].iov_len;
    return offset;
}
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static int qemu_deliver_packet_iov(VLANClientState *sender,
                                   const struct iovec *iov, int iovcnt)
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{
    VLANClientState *vc;
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    int ret = -1;

    sender->vlan->delivering = 1;

    for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
        ssize_t len;

        if (vc == sender) {
            continue;
        }

        if (vc->link_down) {
            ret = calc_iov_length(iov, iovcnt);
            continue;
        }

        if (vc->receive_iov) {
            len = vc->receive_iov(vc, iov, iovcnt);
        } else {
            len = vc_sendv_compat(vc, iov, iovcnt);
        }

        ret = (ret >= 0) ? ret : len;
    }

    sender->vlan->delivering = 0;

    return ret;
}

static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
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                                       const struct iovec *iov, int iovcnt,
                                       NetPacketSent *sent_cb)
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{
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    VLANPacket *packet;
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    size_t max_len = 0;
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    int i;
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    max_len = calc_iov_length(iov, iovcnt);
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    packet = qemu_malloc(sizeof(VLANPacket) + max_len);
    packet->next = sender->vlan->send_queue;
    packet->sender = sender;
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    packet->sent_cb = sent_cb;
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    packet->size = 0;
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    for (i = 0; i < iovcnt; i++) {
        size_t len = iov[i].iov_len;
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        memcpy(packet->data + packet->size, iov[i].iov_base, len);
        packet->size += len;
    }
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    sender->vlan->send_queue = packet;
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    return packet->size;
}
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ssize_t qemu_sendv_packet_async(VLANClientState *sender,
                                const struct iovec *iov, int iovcnt,
                                NetPacketSent *sent_cb)
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{
    int ret;

    if (sender->link_down) {
        return calc_iov_length(iov, iovcnt);
    }

    if (sender->vlan->delivering) {
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        return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
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    }
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    ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
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    if (ret == 0 && sent_cb != NULL) {
        qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
        return 0;
    }
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    qemu_flush_queued_packets(sender);

    return ret;
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}
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ssize_t
qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
{
    return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
}
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static void config_error(Monitor *mon, const char *fmt, ...)
{
    va_list ap;

    va_start(ap, fmt);
    if (mon) {
        monitor_vprintf(mon, fmt, ap);
    } else {
        fprintf(stderr, "qemu: ");
        vfprintf(stderr, fmt, ap);
        exit(1);
    }
    va_end(ap);
}
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#if defined(CONFIG_SLIRP)

/* slirp network adapter */
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struct slirp_config_str {
    struct slirp_config_str *next;
    const char *str;
};
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static int slirp_inited;
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static struct slirp_config_str *slirp_redirs;
#ifndef _WIN32
static const char *slirp_smb_export;
#endif
666
667
static VLANClientState *slirp_vc;
668
#ifndef _WIN32
669
static void slirp_smb(const char *exported_dir);
670
#endif
671
672
static void slirp_redirection(Monitor *mon, const char *redir_str);
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
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);
}

int slirp_is_inited(void)
{
    return slirp_inited;
}
694
static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
695
696
697
698
699
700
{
#ifdef DEBUG_SLIRP
    printf("slirp input:\n");
    hex_dump(stdout, buf, size);
#endif
    slirp_input(buf, size);
701
    return size;
702
703
}
704
705
706
707
708
709
710
static int slirp_in_use;

static void net_slirp_cleanup(VLANClientState *vc)
{
    slirp_in_use = 0;
}
711
712
static int net_slirp_init(VLANState *vlan, const char *model, const char *name,
                          int restricted, const char *ip)
713
{
714
715
716
717
    if (slirp_in_use) {
        /* slirp only supports a single instance so far */
        return -1;
    }
718
719
    if (!slirp_inited) {
        slirp_inited = 1;
720
721
722
723
724
725
726
727
728
729
730
731
732
733
        slirp_init(restricted, ip);

        while (slirp_redirs) {
            struct slirp_config_str *config = slirp_redirs;

            slirp_redirection(NULL, config->str);
            slirp_redirs = config->next;
            qemu_free(config);
        }
#ifndef _WIN32
        if (slirp_smb_export) {
            slirp_smb(slirp_smb_export);
        }
#endif
734
    }
735
736
    slirp_vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive,
737
                                    NULL, net_slirp_cleanup, NULL);
738
    slirp_vc->info_str[0] = '\0';
739
    slirp_in_use = 1;
740
741
742
    return 0;
}
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
static void net_slirp_redir_print(void *opaque, int is_udp,
                                  struct in_addr *laddr, u_int lport,
                                  struct in_addr *faddr, u_int fport)
{
    Monitor *mon = (Monitor *)opaque;
    uint32_t h_addr;
    uint32_t g_addr;
    char buf[16];

    h_addr = ntohl(faddr->s_addr);
    g_addr = ntohl(laddr->s_addr);

    monitor_printf(mon, "  %s |", is_udp ? "udp" : "tcp" );
    snprintf(buf, 15, "%d.%d.%d.%d", (h_addr >> 24) & 0xff,
                                     (h_addr >> 16) & 0xff,
                                     (h_addr >> 8) & 0xff,
                                     (h_addr) & 0xff);
    monitor_printf(mon, " %15s |", buf);
    monitor_printf(mon, " %5d |", fport);

    snprintf(buf, 15, "%d.%d.%d.%d", (g_addr >> 24) & 0xff,
                                     (g_addr >> 16) & 0xff,
                                     (g_addr >> 8) & 0xff,
                                     (g_addr) & 0xff);
    monitor_printf(mon, " %15s |", buf);
    monitor_printf(mon, " %5d\n", lport);

}

static void net_slirp_redir_list(Monitor *mon)
{
    if (!mon)
        return;

    monitor_printf(mon, " Prot |    Host Addr    | HPort |    Guest Addr   | GPort\n");
    monitor_printf(mon, "      |                 |       |                 |      \n");
    slirp_redir_loop(net_slirp_redir_print, mon);
}
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
static void net_slirp_redir_rm(Monitor *mon, const char *port_str)
{
    int host_port;
    char buf[256] = "";
    const char *p = port_str;
    int is_udp = 0;
    int n;

    if (!mon)
        return;

    if (!port_str || !port_str[0])
        goto fail_syntax;

    get_str_sep(buf, sizeof(buf), &p, ':');

    if (!strcmp(buf, "tcp") || buf[0] == '\0') {
        is_udp = 0;
    } else if (!strcmp(buf, "udp")) {
        is_udp = 1;
    } else {
        goto fail_syntax;
    }

    host_port = atoi(p);

    n = slirp_redir_rm(is_udp, host_port);

    monitor_printf(mon, "removed %d redirections to %s port %d\n", n,
                        is_udp ? "udp" : "tcp", host_port);
    return;

 fail_syntax:
    monitor_printf(mon, "invalid format\n");
}
818
static void slirp_redirection(Monitor *mon, const char *redir_str)
819
820
821
{
    struct in_addr guest_addr;
    int host_port, guest_port;
822
823
824
    const char *p;
    char buf[256], *r;
    int is_udp;
825
826
    p = redir_str;
827
    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
828
        goto fail_syntax;
829
    }
830
    if (!strcmp(buf, "tcp") || buf[0] == '\0') {
831
832
833
834
        is_udp = 0;
    } else if (!strcmp(buf, "udp")) {
        is_udp = 1;
    } else {
835
        goto fail_syntax;
836
837
    }
838
    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
839
        goto fail_syntax;
840
    }
841
    host_port = strtol(buf, &r, 0);
842
    if (r == buf) {
843
        goto fail_syntax;
844
    }
845
846
    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
847
        goto fail_syntax;
848
    }
849
850
851
    if (buf[0] == '\0') {
        pstrcpy(buf, sizeof(buf), "10.0.2.15");
    }
852
    if (!inet_aton(buf, &guest_addr)) {
853
        goto fail_syntax;
854
    }
855
856

    guest_port = strtol(p, &r, 0);
857
    if (r == p) {
858
        goto fail_syntax;
859
    }
860
861

    if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
862
        config_error(mon, "could not set up redirection '%s'\n", redir_str);
863
864
    }
    return;
865
866

 fail_syntax:
867
    config_error(mon, "invalid redirection format '%s'\n", redir_str);
868
869
}
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
void net_slirp_redir(Monitor *mon, const char *redir_str, const char *redir_opt2)
{
    struct slirp_config_str *config;

    if (!slirp_inited) {
        if (mon) {
            monitor_printf(mon, "user mode network stack not in use\n");
        } else {
            config = qemu_malloc(sizeof(*config));
            config->str = redir_str;
            config->next = slirp_redirs;
            slirp_redirs = config;
        }
        return;
    }

    if (!strcmp(redir_str, "remove")) {
        net_slirp_redir_rm(mon, redir_opt2);
        return;
    }

    if (!strcmp(redir_str, "list")) {
        net_slirp_redir_list(mon);
        return;
    }

    slirp_redirection(mon, redir_str);
}
899
900
901
902
903
904
905
906
907
908
909
#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 */
910
    if ((d = opendir(dir_name)) != NULL) {
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
        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);
}
934
static void slirp_smb(const char *exported_dir)
935
936
937
938
939
940
{
    char smb_conf[1024];
    char smb_cmdline[1024];
    FILE *f;

    /* XXX: better tmp dir construction */
941
    snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%ld", (long)getpid());
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
    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);
}
983
984
985
986
987
988
989
990
991
992
993
994
995
/* automatic user mode samba server configuration */
void net_slirp_smb(const char *exported_dir)
{
    if (slirp_smb_export) {
        fprintf(stderr, "-smb given twice\n");
        exit(1);
    }
    slirp_smb_export = exported_dir;
    if (slirp_inited) {
        slirp_smb(exported_dir);
    }
}
996
#endif /* !defined(_WIN32) */
997
998
void do_info_slirp(Monitor *mon)
999
1000
1001
1002
{
    slirp_stats();
}
1003
1004
1005
struct VMChannel {
    CharDriverState *hd;
    int port;
1006
};
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019

static int vmchannel_can_read(void *opaque)
{
    struct VMChannel *vmc = (struct VMChannel*)opaque;
    return slirp_socket_can_recv(4, vmc->port);
}

static void vmchannel_read(void *opaque, const uint8_t *buf, int size)
{
    struct VMChannel *vmc = (struct VMChannel*)opaque;
    slirp_socket_recv(4, vmc->port, buf, size);
}
1020
1021
1022
1023
1024
1025
1026
1027
#endif /* CONFIG_SLIRP */

#if !defined(_WIN32)

typedef struct TAPState {
    VLANClientState *vc;
    int fd;
    char down_script[1024];
1028
    char down_script_arg[128];
1029
    uint8_t buf[4096];
1030
1031
} TAPState;
1032
1033
static int launch_script(const char *setup_script, const char *ifname, int fd);
1034
static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1035
1036
                               int iovcnt)
{
1037
    TAPState *s = vc->opaque;
1038
1039
1040
1041
1042
1043
1044
1045
1046
    ssize_t len;

    do {
        len = writev(s->fd, iov, iovcnt);
    } while (len == -1 && (errno == EINTR || errno == EAGAIN));

    return len;
}
1047
static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1048
{
1049
    TAPState *s = vc->opaque;
1050
1051
1052
1053
1054
1055
1056
    ssize_t len;

    do {
        len = write(s->fd, buf, size);
    } while (len == -1 && (errno == EINTR || errno == EAGAIN));

    return len;
1057
1058
}
1059
1060
1061
1062
1063
1064
1065
static int tap_can_send(void *opaque)
{
    TAPState *s = opaque;

    return qemu_can_send_packet(s->vc);
}
1066
#ifdef __sun__
1067
1068
static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
{
1069
1070
    struct strbuf sbuf;
    int f = 0;
1071
1072

    sbuf.maxlen = maxlen;
1073
    sbuf.buf = (char *)buf;
1074
1075
1076

    return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
}
1077
#else
1078
1079
1080
1081
static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
{
    return read(tapfd, buf, maxlen);
}
1082
#endif
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
static void tap_send(void *opaque);

static void tap_send_completed(VLANClientState *vc)
{
    TAPState *s = vc->opaque;

    qemu_set_fd_handler2(s->fd, tap_can_send, tap_send, NULL, s);
}
1093
1094
1095
1096
1097
static void tap_send(void *opaque)
{
    TAPState *s = opaque;
    int size;
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
    do {
        size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
        if (size <= 0) {
            break;
        }

        size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
        if (size == 0) {
            qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
        }
    } while (size > 0);
1109
1110
}
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
static void tap_cleanup(VLANClientState *vc)
{
    TAPState *s = vc->opaque;

    if (s->down_script[0])
        launch_script(s->down_script, s->down_script_arg, s->fd);

    qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
    close(s->fd);
    qemu_free(s);
}
1123
1124
/* fd support */
1125
1126
1127
1128
static TAPState *net_tap_fd_init(VLANState *vlan,
                                 const char *model,
                                 const char *name,
                                 int fd)
1129
1130
1131
1132
1133
{
    TAPState *s;

    s = qemu_mallocz(sizeof(TAPState));
    s->fd = fd;
1134
1135
    s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
                                 tap_receive_iov, tap_cleanup, s);
1136
    qemu_set_fd_handler2(s->fd, tap_can_send, tap_send, NULL, s);
1137
    snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
1138
1139
1140
    return s;
}
1141
#if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
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).
 */
1167
static int tap_alloc(char *dev, size_t dev_size)
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
{
    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;
1184
       while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
       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;
}
malc authored
1296
1297
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1299
1300
1301
#elif defined (_AIX)
static int tap_open(char *ifname, int ifname_size)
{
    fprintf (stderr, "no tap on AIX\n");
    return -1;
}
1302
1303
1304
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1306
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1324
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1330
1331
1332
#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)
{
1333
    sigset_t oldmask, mask;
1334
1335
1336
1337
    int pid, status;
    char *args[3];
    char **parg;
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
    sigemptyset(&mask);
    sigaddset(&mask, SIGCHLD);
    sigprocmask(SIG_BLOCK, &mask, &oldmask);

    /* try to launch network script */
    pid = fork();
    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);
1353
1354
            }
        }
1355
1356
1357
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1359
1360
1361
1362
1363
1364
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1368
1369
1370
1371
1372
        parg = args;
        *parg++ = (char *)setup_script;
        *parg++ = (char *)ifname;
        *parg++ = NULL;
        execv(setup_script, args);
        _exit(1);
    } else if (pid > 0) {
        while (waitpid(pid, &status, 0) != pid) {
            /* loop */
        }
        sigprocmask(SIG_SETMASK, &oldmask, NULL);

        if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
            return 0;
        }
    }
    fprintf(stderr, "%s: could not launch network script\n", setup_script);
    return -1;
1373
1374
}
1375
1376
static int net_tap_init(VLANState *vlan, const char *model,
                        const char *name, const char *ifname1,
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
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1388
1389
1390
1391
1392
1393
1394
1395
1396
                        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;
    }
1397
    s = net_tap_fd_init(vlan, model, name, fd);
1398
    snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1399
1400
             "ifname=%s,script=%s,downscript=%s",
             ifname, setup_script, down_script);
1401
    if (down_script && strcmp(down_script, "no")) {
1402
        snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1403
1404
        snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
    }
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
    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;
1422
    size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1423
1424
1425
1426
1427
    if (size > 0) {
        qemu_send_packet(s->vc, buf, size);
    }
}
1428
static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1429
{
1430
    VDEState *s = vc->opaque;
1431
    ssize_t ret;
1432
1433
1434
1435
1436
1437

    do {
      ret = vde_send(s->vde, (const char *)buf, size, 0);
    } while (ret < 0 && errno == EINTR);

    return ret;
1438
1439
}
1440
1441
1442
1443
1444
1445
1446
1447
static void vde_cleanup(VLANClientState *vc)
{
    VDEState *s = vc->opaque;
    qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
    vde_close(s->vde);
    qemu_free(s);
}
1448
1449
static int net_vde_init(VLANState *vlan, const char *model,
                        const char *name, const char *sock,
1450
                        int port, const char *group, int mode)
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
{
    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));
1463
    s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1464
1465
1466
1467
    if (!s->vde){
        free(s);
        return -1;
    }
1468
    s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
1469
                                 NULL, vde_cleanup, s);
1470
    qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1471
    snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
             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 */
1482
1483
    unsigned int index;
    unsigned int packet_len;
1484
1485
1486
1487
1488
1489
    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;
1490
    char *model;
1491
    char *name;
1492
1493
1494
1495
    int fd;
} NetSocketListenState;

/* XXX: we consider we can send the whole packet without blocking */
1496
static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1497
{
1498
    NetSocketState *s = vc->opaque;
1499
1500
1501
1502
    uint32_t len;
    len = htonl(size);

    send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1503
    return send_all(s->fd, buf, size);
1504
1505
}
1506
static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1507
{
1508
    NetSocketState *s = vc->opaque;
1509
1510
    return sendto(s->fd, (const void *)buf, size, 0,
1511
                  (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1512
1513
1514
1515
1516
}

static void net_socket_send(void *opaque)
{
    NetSocketState *s = opaque;
1517
1518
    int size, err;
    unsigned l;
1519
1520
1521
    uint8_t buf1[4096];
    const uint8_t *buf;
1522
    size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
    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;
1557
1558
1559
1560
1561
1562
1563
1564
1565
            if (s->index + l <= sizeof(s->buf)) {
                memcpy(s->buf + s->index, buf, l);
            } else {
                fprintf(stderr, "serious error: oversized packet received,"
                    "connection terminated.\n");
                s->state = 0;
                goto eoc;
            }
1566
1567
1568
1569
1570
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1573
1574
1575
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1577
1578
1579
1580
1581
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1583
            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;
1584
    size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1585
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1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
    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;
}
1655
1656
1657
1658
1659
1660
1661
1662
static void net_socket_cleanup(VLANClientState *vc)
{
    NetSocketState *s = vc->opaque;
    qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
    close(s->fd);
    qemu_free(s);
}
1663
1664
1665
static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
                                                const char *model,
                                                const char *name,
1666
                                                int fd, int is_connected)
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
{
    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));
    s->fd = fd;
1707
    s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
1708
                                 NULL, net_socket_cleanup, s);
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
    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);
}
1727
1728
1729
static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
                                                 const char *model,
                                                 const char *name,
1730
                                                 int fd, int is_connected)
1731
1732
1733
1734
{
    NetSocketState *s;
    s = qemu_mallocz(sizeof(NetSocketState));
    s->fd = fd;
1735
    s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
1736
                                 NULL, net_socket_cleanup, s);
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
    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;
}
1747
1748
static NetSocketState *net_socket_fd_init(VLANState *vlan,
                                          const char *model, const char *name,
1749
                                          int fd, int is_connected)
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
{
    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:
1760
        return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
1761
    case SOCK_STREAM:
1762
        return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1763
1764
1765
    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);
1766
        return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
    }
    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;
        }
    }
1788
    s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
1789
1790
1791
1792
1793
1794
1795
1796
1797
    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));
    }
}
1798
1799
1800
static int net_socket_listen_init(VLANState *vlan,
                                  const char *model,
                                  const char *name,
1801
                                  const char *host_str)
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
{
    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));

    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;
1834
    s->model = strdup(model);
1835
    s->name = name ? strdup(name) : NULL;
1836
1837
1838
1839
1840
    s->fd = fd;
    qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
    return 0;
}
1841
1842
1843
static int net_socket_connect_init(VLANState *vlan,
                                   const char *model,
                                   const char *name,
1844
                                   const char *host_str)
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
{
    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;
        }
    }
1882
    s = net_socket_fd_init(vlan, model, name, fd, connected);
1883
1884
1885
1886
1887
1888
1889
1890
    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;
}
1891
1892
1893
static int net_socket_mcast_init(VLANState *vlan,
                                 const char *model,
                                 const char *name,
1894
                                 const char *host_str)
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
{
    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;
1908
    s = net_socket_fd_init(vlan, model, name, fd, 0);
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
    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;

}
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
typedef struct DumpState {
    VLANClientState *pcap_vc;
    int fd;
    int pcap_caplen;
} DumpState;

#define PCAP_MAGIC 0xa1b2c3d4

struct pcap_file_hdr {
    uint32_t magic;
    uint16_t version_major;
    uint16_t version_minor;
    int32_t thiszone;
    uint32_t sigfigs;
    uint32_t snaplen;
    uint32_t linktype;
};

struct pcap_sf_pkthdr {
    struct {
        int32_t tv_sec;
        int32_t tv_usec;
    } ts;
    uint32_t caplen;
    uint32_t len;
};
1948
static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1949
{
1950
    DumpState *s = vc->opaque;
1951
1952
1953
1954
1955
1956
    struct pcap_sf_pkthdr hdr;
    int64_t ts;
    int caplen;

    /* Early return in case of previous error. */
    if (s->fd < 0) {
1957
        return size;
1958
1959
    }
Jan Kiszka authored
1960
    ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
1961
1962
    caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
Jan Kiszka authored
1963
    hdr.ts.tv_sec = ts / 1000000;
1964
1965
1966
1967
1968
1969
1970
1971
1972
    hdr.ts.tv_usec = ts % 1000000;
    hdr.caplen = caplen;
    hdr.len = size;
    if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
        write(s->fd, buf, caplen) != caplen) {
        qemu_log("-net dump write error - stop dump\n");
        close(s->fd);
        s->fd = -1;
    }
1973
1974

    return size;
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
}

static void net_dump_cleanup(VLANClientState *vc)
{
    DumpState *s = vc->opaque;

    close(s->fd);
    qemu_free(s);
}
1985
static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
1986
1987
1988
1989
1990
1991
1992
1993
1994
                         const char *name, const char *filename, int len)
{
    struct pcap_file_hdr hdr;
    DumpState *s;

    s = qemu_malloc(sizeof(DumpState));

    s->fd = open(filename, O_CREAT | O_WRONLY, 0644);
    if (s->fd < 0) {
1995
        config_error(mon, "-net dump: can't open %s\n", filename);
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
        return -1;
    }

    s->pcap_caplen = len;

    hdr.magic = PCAP_MAGIC;
    hdr.version_major = 2;
    hdr.version_minor = 4;
    hdr.thiszone = 0;
    hdr.sigfigs = 0;
    hdr.snaplen = s->pcap_caplen;
    hdr.linktype = 1;

    if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2010
        config_error(mon, "-net dump write error: %s\n", strerror(errno));
2011
2012
2013
2014
2015
        close(s->fd);
        qemu_free(s);
        return -1;
    }
2016
    s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
2017
2018
2019
2020
2021
2022
                                      net_dump_cleanup, s);
    snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
             "dump to %s (len=%d)", filename, len);
    return 0;
}
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
/* 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));
    vlan->id = id;
    vlan->next = NULL;
    pvlan = &first_vlan;
    while (*pvlan != NULL)
        pvlan = &(*pvlan)->next;
    *pvlan = vlan;
    return vlan;
}
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
static int nic_get_free_idx(void)
{
    int index;

    for (index = 0; index < MAX_NICS; index++)
        if (!nd_table[index].used)
            return index;
    return -1;
}
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
void qemu_check_nic_model(NICInfo *nd, const char *model)
{
    const char *models[2];

    models[0] = model;
    models[1] = NULL;

    qemu_check_nic_model_list(nd, models, model);
}

void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
                               const char *default_model)
{
    int i, exit_status = 0;

    if (!nd->model)
        nd->model = strdup(default_model);

    if (strcmp(nd->model, "?") != 0) {
        for (i = 0 ; models[i]; i++)
            if (strcmp(nd->model, models[i]) == 0)
                return;

        fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
        exit_status = 1;
    }

    fprintf(stderr, "qemu: Supported NIC models: ");
    for (i = 0 ; models[i]; i++)
        fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');

    exit(exit_status);
}
2085
int net_client_init(Monitor *mon, const char *device, const char *p)
2086
{
2087
2088
2089
    static const char * const fd_params[] = {
        "vlan", "name", "fd", NULL
    };
2090
2091
2092
    char buf[1024];
    int vlan_id, ret;
    VLANState *vlan;
2093
    char *name = NULL;
2094
2095
2096
2097
2098
2099

    vlan_id = 0;
    if (get_param_value(buf, sizeof(buf), "vlan", p)) {
        vlan_id = strtol(buf, NULL, 0);
    }
    vlan = qemu_find_vlan(vlan_id);
2100
2101
    if (get_param_value(buf, sizeof(buf), "name", p)) {
2102
        name = qemu_strdup(buf);
2103
    }
2104
    if (!strcmp(device, "nic")) {
2105
2106
2107
        static const char * const nic_params[] = {
            "vlan", "name", "macaddr", "model", NULL
        };
2108
2109
        NICInfo *nd;
        uint8_t *macaddr;
2110
        int idx = nic_get_free_idx();
2111
2112
        if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
2113
2114
2115
            config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
            ret = -1;
            goto out;
2116
        }
2117
        if (idx == -1 || nb_nics >= MAX_NICS) {
2118
            config_error(mon, "Too Many NICs\n");
2119
2120
            ret = -1;
            goto out;
2121
        }
2122
        nd = &nd_table[idx];
2123
2124
2125
2126
2127
2128
        macaddr = nd->macaddr;
        macaddr[0] = 0x52;
        macaddr[1] = 0x54;
        macaddr[2] = 0x00;
        macaddr[3] = 0x12;
        macaddr[4] = 0x34;
2129
        macaddr[5] = 0x56 + idx;
2130
2131
2132

        if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
            if (parse_macaddr(macaddr, buf) < 0) {
2133
                config_error(mon, "invalid syntax for ethernet address\n");
2134
2135
                ret = -1;
                goto out;
2136
2137
2138
2139
2140
2141
            }
        }
        if (get_param_value(buf, sizeof(buf), "model", p)) {
            nd->model = strdup(buf);
        }
        nd->vlan = vlan;
2142
        nd->name = name;
2143
        nd->used = 1;
2144
        name = NULL;
2145
2146
        nb_nics++;
        vlan->nb_guest_devs++;
2147
        ret = idx;
2148
2149
    } else
    if (!strcmp(device, "none")) {
2150
        if (*p != '\0') {
2151
2152
2153
            config_error(mon, "'none' takes no parameters\n");
            ret = -1;
            goto out;
2154
        }
2155
2156
2157
2158
2159
2160
        /* does nothing. It is needed to signal that no network cards
           are wanted */
        ret = 0;
    } else
#ifdef CONFIG_SLIRP
    if (!strcmp(device, "user")) {
2161
2162
2163
        static const char * const slirp_params[] = {
            "vlan", "name", "hostname", "restrict", "ip", NULL
        };
2164
2165
2166
        int restricted = 0;
        char *ip = NULL;
2167
        if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
2168
2169
2170
            config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
            ret = -1;
            goto out;
2171
        }
2172
2173
2174
        if (get_param_value(buf, sizeof(buf), "hostname", p)) {
            pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
        }
2175
        if (get_param_value(buf, sizeof(buf), "restrict", p)) {
2176
            restricted = (buf[0] == 'y') ? 1 : 0;
2177
2178
        }
        if (get_param_value(buf, sizeof(buf), "ip", p)) {
2179
            ip = qemu_strdup(buf);
2180
        }
2181
        vlan->nb_host_devs++;
2182
2183
        ret = net_slirp_init(vlan, device, name, restricted, ip);
        qemu_free(ip);
2184
2185
2186
2187
2188
2189
2190
2191
    } else if (!strcmp(device, "channel")) {
        long port;
        char name[20], *devname;
        struct VMChannel *vmc;

        port = strtol(p, &devname, 10);
        devname++;
        if (port < 1 || port > 65535) {
2192
            config_error(mon, "vmchannel wrong port number\n");
2193
2194
            ret = -1;
            goto out;
2195
2196
2197
2198
2199
        }
        vmc = malloc(sizeof(struct VMChannel));
        snprintf(name, 20, "vmchannel%ld", port);
        vmc->hd = qemu_chr_open(name, devname, NULL);
        if (!vmc->hd) {
2200
2201
            config_error(mon, "could not open vmchannel device '%s'\n",
                         devname);
2202
2203
            ret = -1;
            goto out;
2204
2205
2206
2207
2208
2209
        }
        vmc->port = port;
        slirp_add_exec(3, vmc->hd, 4, port);
        qemu_chr_add_handlers(vmc->hd, vmchannel_can_read, vmchannel_read,
                NULL, vmc);
        ret = 0;
2210
2211
2212
2213
    } else
#endif
#ifdef _WIN32
    if (!strcmp(device, "tap")) {
2214
2215
2216
        static const char * const tap_params[] = {
            "vlan", "name", "ifname", NULL
        };
2217
        char ifname[64];
2218
2219
        if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
2220
2221
2222
            config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
            ret = -1;
            goto out;
2223
        }
2224
        if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2225
            config_error(mon, "tap: no interface name\n");
2226
2227
            ret = -1;
            goto out;
2228
2229
        }
        vlan->nb_host_devs++;
2230
        ret = tap_win32_init(vlan, device, name, ifname);
2231
    } else
malc authored
2232
#elif defined (_AIX)
2233
2234
#else
    if (!strcmp(device, "tap")) {
2235
        char ifname[64], chkbuf[64];
2236
2237
2238
2239
        char setup_script[1024], down_script[1024];
        int fd;
        vlan->nb_host_devs++;
        if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2240
            if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2241
2242
2243
                config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
                ret = -1;
                goto out;
2244
            }
2245
2246
            fd = strtol(buf, NULL, 0);
            fcntl(fd, F_SETFL, O_NONBLOCK);
2247
2248
            net_tap_fd_init(vlan, device, name, fd);
            ret = 0;
2249
        } else {
2250
2251
2252
            static const char * const tap_params[] = {
                "vlan", "name", "ifname", "script", "downscript", NULL
            };
2253
            if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
2254
2255
2256
                config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
                ret = -1;
                goto out;
2257
            }
2258
2259
2260
2261
2262
2263
2264
2265
2266
            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);
            }
2267
            ret = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2268
2269
2270
2271
        }
    } else
#endif
    if (!strcmp(device, "socket")) {
2272
        char chkbuf[64];
2273
2274
        if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
            int fd;
2275
            if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2276
2277
2278
                config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
                ret = -1;
                goto out;
2279
            }
2280
2281
            fd = strtol(buf, NULL, 0);
            ret = -1;
2282
            if (net_socket_fd_init(vlan, device, name, fd, 1))
2283
2284
                ret = 0;
        } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
2285
2286
2287
            static const char * const listen_params[] = {
                "vlan", "name", "listen", NULL
            };
2288
            if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
2289
2290
2291
                config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
                ret = -1;
                goto out;
2292
            }
2293
            ret = net_socket_listen_init(vlan, device, name, buf);
2294
        } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
2295
2296
2297
            static const char * const connect_params[] = {
                "vlan", "name", "connect", NULL
            };
2298
            if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
2299
2300
2301
                config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
                ret = -1;
                goto out;
2302
            }
2303
            ret = net_socket_connect_init(vlan, device, name, buf);
2304
        } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
2305
2306
2307
            static const char * const mcast_params[] = {
                "vlan", "name", "mcast", NULL
            };
2308
            if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
2309
2310
2311
                config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
                ret = -1;
                goto out;
2312
            }
2313
            ret = net_socket_mcast_init(vlan, device, name, buf);
2314
        } else {
2315
            config_error(mon, "Unknown socket options: %s\n", p);
2316
2317
            ret = -1;
            goto out;
2318
2319
2320
2321
2322
        }
        vlan->nb_host_devs++;
    } else
#ifdef CONFIG_VDE
    if (!strcmp(device, "vde")) {
2323
2324
2325
        static const char * const vde_params[] = {
            "vlan", "name", "sock", "port", "group", "mode", NULL
        };
2326
2327
        char vde_sock[1024], vde_group[512];
	int vde_port, vde_mode;
2328
2329
        if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
2330
2331
2332
            config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
            ret = -1;
            goto out;
2333
        }
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
        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;
	}
2351
	ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
2352
2353
    } else
#endif
2354
2355
2356
2357
2358
2359
2360
2361
2362
    if (!strcmp(device, "dump")) {
        int len = 65536;

        if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
            len = strtol(buf, NULL, 0);
        }
        if (!get_param_value(buf, sizeof(buf), "file", p)) {
            snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
        }
2363
        ret = net_dump_init(mon, vlan, device, name, buf, len);
2364
    } else {
2365
        config_error(mon, "Unknown network device: %s\n", device);
2366
2367
        ret = -1;
        goto out;
2368
2369
    }
    if (ret < 0) {
2370
        config_error(mon, "Could not initialize device '%s'\n", device);
2371
    }
2372
out:
2373
    qemu_free(name);
2374
2375
2376
    return ret;
}
2377
2378
2379
2380
2381
2382
2383
2384
void net_client_uninit(NICInfo *nd)
{
    nd->vlan->nb_guest_devs--;
    nb_nics--;
    nd->used = 0;
    free((void *)nd->model);
}
2385
2386
2387
static int net_host_check_device(const char *device)
{
    int i;
2388
    const char *valid_param_list[] = { "tap", "socket", "dump"
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
#ifdef CONFIG_SLIRP
                                       ,"user"
#endif
#ifdef CONFIG_VDE
                                       ,"vde"
#endif
    };
    for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
        if (!strncmp(valid_param_list[i], device,
                     strlen(valid_param_list[i])))
            return 1;
    }

    return 0;
}
2405
void net_host_device_add(Monitor *mon, const char *device, const char *opts)
2406
2407
{
    if (!net_host_check_device(device)) {
2408
        monitor_printf(mon, "invalid host network device %s\n", device);
2409
2410
        return;
    }
2411
    if (net_client_init(mon, device, opts ? opts : "") < 0) {
2412
2413
        monitor_printf(mon, "adding host network device %s failed\n", device);
    }
2414
2415
}
2416
void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
2417
2418
2419
2420
2421
2422
{
    VLANState *vlan;
    VLANClientState *vc;

    vlan = qemu_find_vlan(vlan_id);
2423
2424
    for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
        if (!strcmp(vc->name, device)) {
2425
            break;
2426
2427
        }
    }
2428
2429

    if (!vc) {
2430
        monitor_printf(mon, "can't find device %s\n", device);
2431
2432
        return;
    }
2433
2434
2435
2436
    if (!net_host_check_device(vc->model)) {
        monitor_printf(mon, "invalid host network device %s\n", device);
        return;
    }
2437
2438
2439
    qemu_del_vlan_client(vc);
}
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
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++;
2457
    return net_client_init(NULL, device, p);
2458
2459
}
2460
void do_info_network(Monitor *mon)
2461
2462
2463
2464
2465
{
    VLANState *vlan;
    VLANClientState *vc;

    for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2466
        monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
2467
        for(vc = vlan->first_client; vc != NULL; vc = vc->next)
2468
            monitor_printf(mon, "  %s: %s\n", vc->name, vc->info_str);
2469
2470
2471
    }
}
2472
int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
2473
2474
2475
2476
2477
2478
2479
{
    VLANState *vlan;
    VLANClientState *vc = NULL;

    for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
        for (vc = vlan->first_client; vc != NULL; vc = vc->next)
            if (strcmp(vc->name, name) == 0)
2480
2481
                goto done;
done:
2482
2483

    if (!vc) {
2484
        monitor_printf(mon, "could not find network device '%s'", name);
2485
2486
2487
2488
2489
2490
2491
2492
        return 0;
    }

    if (strcmp(up_or_down, "up") == 0)
        vc->link_down = 0;
    else if (strcmp(up_or_down, "down") == 0)
        vc->link_down = 1;
    else
2493
2494
        monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
                       "valid\n", up_or_down);
2495
2496
2497
2498
    if (vc->link_status_changed)
        vc->link_status_changed(vc);
2499
2500
2501
    return 1;
}
2502
2503
2504
2505
2506
2507
void net_cleanup(void)
{
    VLANState *vlan;

    /* close network clients */
    for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2508
        VLANClientState *vc = vlan->first_client;
2509
2510
2511
        while (vc) {
            VLANClientState *next = vc->next;
2512
2513
2514
2515
            qemu_del_vlan_client(vc);

            vc = next;
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
        }
    }
}

void net_client_check(void)
{
    VLANState *vlan;

    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);
    }
}