3449 lines
89 KiB
C
3449 lines
89 KiB
C
/*
|
|
* 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>
|
|
|
|
/* Needed early for CONFIG_BSD etc. */
|
|
#include "config-host.h"
|
|
|
|
#ifndef _WIN32
|
|
#include <sys/times.h>
|
|
#include <sys/wait.h>
|
|
#include <termios.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/resource.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <net/if.h>
|
|
#ifdef __NetBSD__
|
|
#include <net/if_tap.h>
|
|
#endif
|
|
#ifdef __linux__
|
|
#include "tap-linux.h"
|
|
#endif
|
|
#include <arpa/inet.h>
|
|
#include <dirent.h>
|
|
#include <netdb.h>
|
|
#include <sys/select.h>
|
|
#ifdef CONFIG_BSD
|
|
#include <sys/stat.h>
|
|
#if defined(__FreeBSD__) || defined(__DragonFly__)
|
|
#include <libutil.h>
|
|
#else
|
|
#include <util.h>
|
|
#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
|
|
|
|
#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"
|
|
#include "qemu-log.h"
|
|
#include "qemu-config.h"
|
|
|
|
#include "slirp/libslirp.h"
|
|
|
|
static QTAILQ_HEAD(, VLANState) vlans;
|
|
static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
|
|
|
|
/***********************************************************/
|
|
/* 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 (qemu_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;
|
|
}
|
|
|
|
void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
|
|
{
|
|
snprintf(vc->info_str, sizeof(vc->info_str),
|
|
"model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
|
|
vc->model,
|
|
macaddr[0], macaddr[1], macaddr[2],
|
|
macaddr[3], macaddr[4], macaddr[5]);
|
|
}
|
|
|
|
void qemu_macaddr_default_if_unset(MACAddr *macaddr)
|
|
{
|
|
static int index = 0;
|
|
static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
|
|
|
|
if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
|
|
return;
|
|
macaddr->a[0] = 0x52;
|
|
macaddr->a[1] = 0x54;
|
|
macaddr->a[2] = 0x00;
|
|
macaddr->a[3] = 0x12;
|
|
macaddr->a[4] = 0x34;
|
|
macaddr->a[5] = 0x56 + index++;
|
|
}
|
|
|
|
static char *assign_name(VLANClientState *vc1, const char *model)
|
|
{
|
|
VLANState *vlan;
|
|
char buf[256];
|
|
int id = 0;
|
|
|
|
QTAILQ_FOREACH(vlan, &vlans, next) {
|
|
VLANClientState *vc;
|
|
|
|
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
|
if (vc != vc1 && strcmp(vc->model, model) == 0) {
|
|
id++;
|
|
}
|
|
}
|
|
}
|
|
|
|
snprintf(buf, sizeof(buf), "%s.%d", model, id);
|
|
|
|
return qemu_strdup(buf);
|
|
}
|
|
|
|
static ssize_t qemu_deliver_packet(VLANClientState *sender,
|
|
const uint8_t *data,
|
|
size_t size,
|
|
void *opaque);
|
|
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
|
const struct iovec *iov,
|
|
int iovcnt,
|
|
void *opaque);
|
|
|
|
VLANClientState *qemu_new_vlan_client(VLANState *vlan,
|
|
VLANClientState *peer,
|
|
const char *model,
|
|
const char *name,
|
|
NetCanReceive *can_receive,
|
|
NetReceive *receive,
|
|
NetReceiveIOV *receive_iov,
|
|
NetCleanup *cleanup,
|
|
void *opaque)
|
|
{
|
|
VLANClientState *vc;
|
|
|
|
vc = qemu_mallocz(sizeof(VLANClientState));
|
|
|
|
vc->model = qemu_strdup(model);
|
|
if (name)
|
|
vc->name = qemu_strdup(name);
|
|
else
|
|
vc->name = assign_name(vc, model);
|
|
vc->can_receive = can_receive;
|
|
vc->receive = receive;
|
|
vc->receive_iov = receive_iov;
|
|
vc->cleanup = cleanup;
|
|
vc->opaque = opaque;
|
|
|
|
if (vlan) {
|
|
assert(!peer);
|
|
vc->vlan = vlan;
|
|
QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
|
|
} else {
|
|
if (peer) {
|
|
vc->peer = peer;
|
|
peer->peer = vc;
|
|
}
|
|
QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
|
|
|
|
vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
|
|
qemu_deliver_packet_iov,
|
|
vc);
|
|
}
|
|
|
|
return vc;
|
|
}
|
|
|
|
void qemu_del_vlan_client(VLANClientState *vc)
|
|
{
|
|
if (vc->vlan) {
|
|
QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
|
|
} else {
|
|
if (vc->send_queue) {
|
|
qemu_del_net_queue(vc->send_queue);
|
|
}
|
|
QTAILQ_REMOVE(&non_vlan_clients, vc, next);
|
|
if (vc->peer) {
|
|
vc->peer->peer = NULL;
|
|
}
|
|
}
|
|
|
|
if (vc->cleanup) {
|
|
vc->cleanup(vc);
|
|
}
|
|
|
|
qemu_free(vc->name);
|
|
qemu_free(vc->model);
|
|
qemu_free(vc);
|
|
}
|
|
|
|
VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
|
|
{
|
|
VLANClientState *vc;
|
|
|
|
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
|
if (vc->opaque == opaque) {
|
|
return vc;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static VLANClientState *
|
|
qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
|
|
const char *client_str)
|
|
{
|
|
VLANState *vlan;
|
|
VLANClientState *vc;
|
|
|
|
vlan = qemu_find_vlan(vlan_id, 0);
|
|
if (!vlan) {
|
|
monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
|
|
return NULL;
|
|
}
|
|
|
|
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
|
if (!strcmp(vc->name, client_str)) {
|
|
break;
|
|
}
|
|
}
|
|
if (!vc) {
|
|
monitor_printf(mon, "can't find device %s on VLAN %d\n",
|
|
client_str, vlan_id);
|
|
}
|
|
|
|
return vc;
|
|
}
|
|
|
|
int qemu_can_send_packet(VLANClientState *sender)
|
|
{
|
|
VLANState *vlan = sender->vlan;
|
|
VLANClientState *vc;
|
|
|
|
if (sender->peer) {
|
|
if (!sender->peer->can_receive ||
|
|
sender->peer->can_receive(sender->peer)) {
|
|
return 1;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (!sender->vlan) {
|
|
return 1;
|
|
}
|
|
|
|
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
|
if (vc == sender) {
|
|
continue;
|
|
}
|
|
|
|
/* no can_receive() handler, they can always receive */
|
|
if (!vc->can_receive || vc->can_receive(vc)) {
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t qemu_deliver_packet(VLANClientState *sender,
|
|
const uint8_t *data,
|
|
size_t size,
|
|
void *opaque)
|
|
{
|
|
VLANClientState *vc = opaque;
|
|
|
|
if (vc->link_down) {
|
|
return size;
|
|
}
|
|
|
|
return vc->receive(vc, data, size);
|
|
}
|
|
|
|
static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
|
|
const uint8_t *buf,
|
|
size_t size,
|
|
void *opaque)
|
|
{
|
|
VLANState *vlan = opaque;
|
|
VLANClientState *vc;
|
|
int ret = -1;
|
|
|
|
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
|
ssize_t len;
|
|
|
|
if (vc == sender) {
|
|
continue;
|
|
}
|
|
|
|
if (vc->link_down) {
|
|
ret = size;
|
|
continue;
|
|
}
|
|
|
|
len = vc->receive(vc, buf, size);
|
|
|
|
ret = (ret >= 0) ? ret : len;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void qemu_purge_queued_packets(VLANClientState *vc)
|
|
{
|
|
NetQueue *queue;
|
|
|
|
if (!vc->peer && !vc->vlan) {
|
|
return;
|
|
}
|
|
|
|
if (vc->peer) {
|
|
queue = vc->peer->send_queue;
|
|
} else {
|
|
queue = vc->vlan->send_queue;
|
|
}
|
|
|
|
qemu_net_queue_purge(queue, vc);
|
|
}
|
|
|
|
void qemu_flush_queued_packets(VLANClientState *vc)
|
|
{
|
|
NetQueue *queue;
|
|
|
|
if (vc->vlan) {
|
|
queue = vc->vlan->send_queue;
|
|
} else {
|
|
queue = vc->send_queue;
|
|
}
|
|
|
|
qemu_net_queue_flush(queue);
|
|
}
|
|
|
|
ssize_t qemu_send_packet_async(VLANClientState *sender,
|
|
const uint8_t *buf, int size,
|
|
NetPacketSent *sent_cb)
|
|
{
|
|
NetQueue *queue;
|
|
|
|
#ifdef DEBUG_NET
|
|
printf("qemu_send_packet_async:\n");
|
|
hex_dump(stdout, buf, size);
|
|
#endif
|
|
|
|
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
|
return size;
|
|
}
|
|
|
|
if (sender->peer) {
|
|
queue = sender->peer->send_queue;
|
|
} else {
|
|
queue = sender->vlan->send_queue;
|
|
}
|
|
|
|
return qemu_net_queue_send(queue, sender, buf, size, sent_cb);
|
|
}
|
|
|
|
void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
|
|
{
|
|
qemu_send_packet_async(vc, buf, size, NULL);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
return vc->receive(vc, buffer, offset);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
|
const struct iovec *iov,
|
|
int iovcnt,
|
|
void *opaque)
|
|
{
|
|
VLANClientState *vc = opaque;
|
|
|
|
if (vc->link_down) {
|
|
return calc_iov_length(iov, iovcnt);
|
|
}
|
|
|
|
if (vc->receive_iov) {
|
|
return vc->receive_iov(vc, iov, iovcnt);
|
|
} else {
|
|
return vc_sendv_compat(vc, iov, iovcnt);
|
|
}
|
|
}
|
|
|
|
static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
|
|
const struct iovec *iov,
|
|
int iovcnt,
|
|
void *opaque)
|
|
{
|
|
VLANState *vlan = opaque;
|
|
VLANClientState *vc;
|
|
ssize_t ret = -1;
|
|
|
|
QTAILQ_FOREACH(vc, &vlan->clients, 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;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
ssize_t qemu_sendv_packet_async(VLANClientState *sender,
|
|
const struct iovec *iov, int iovcnt,
|
|
NetPacketSent *sent_cb)
|
|
{
|
|
NetQueue *queue;
|
|
|
|
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
|
return calc_iov_length(iov, iovcnt);
|
|
}
|
|
|
|
if (sender->peer) {
|
|
queue = sender->peer->send_queue;
|
|
} else {
|
|
queue = sender->vlan->send_queue;
|
|
}
|
|
|
|
return qemu_net_queue_send_iov(queue, sender, iov, iovcnt, sent_cb);
|
|
}
|
|
|
|
ssize_t
|
|
qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
|
|
{
|
|
return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
|
|
}
|
|
|
|
#if defined(CONFIG_SLIRP)
|
|
|
|
/* slirp network adapter */
|
|
|
|
#define SLIRP_CFG_HOSTFWD 1
|
|
#define SLIRP_CFG_LEGACY 2
|
|
|
|
struct slirp_config_str {
|
|
struct slirp_config_str *next;
|
|
int flags;
|
|
char str[1024];
|
|
int legacy_format;
|
|
};
|
|
|
|
typedef struct SlirpState {
|
|
QTAILQ_ENTRY(SlirpState) entry;
|
|
VLANClientState *vc;
|
|
Slirp *slirp;
|
|
#ifndef _WIN32
|
|
char smb_dir[128];
|
|
#endif
|
|
} SlirpState;
|
|
|
|
static struct slirp_config_str *slirp_configs;
|
|
const char *legacy_tftp_prefix;
|
|
const char *legacy_bootp_filename;
|
|
static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
|
|
QTAILQ_HEAD_INITIALIZER(slirp_stacks);
|
|
|
|
static int slirp_hostfwd(SlirpState *s, const char *redir_str,
|
|
int legacy_format);
|
|
static int slirp_guestfwd(SlirpState *s, const char *config_str,
|
|
int legacy_format);
|
|
|
|
#ifndef _WIN32
|
|
static const char *legacy_smb_export;
|
|
|
|
static int slirp_smb(SlirpState *s, const char *exported_dir,
|
|
struct in_addr vserver_addr);
|
|
static void slirp_smb_cleanup(SlirpState *s);
|
|
#else
|
|
static inline void slirp_smb_cleanup(SlirpState *s) { }
|
|
#endif
|
|
|
|
int slirp_can_output(void *opaque)
|
|
{
|
|
SlirpState *s = opaque;
|
|
|
|
return qemu_can_send_packet(s->vc);
|
|
}
|
|
|
|
void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
|
|
{
|
|
SlirpState *s = opaque;
|
|
|
|
#ifdef DEBUG_SLIRP
|
|
printf("slirp output:\n");
|
|
hex_dump(stdout, pkt, pkt_len);
|
|
#endif
|
|
qemu_send_packet(s->vc, pkt, pkt_len);
|
|
}
|
|
|
|
static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
|
|
{
|
|
SlirpState *s = vc->opaque;
|
|
|
|
#ifdef DEBUG_SLIRP
|
|
printf("slirp input:\n");
|
|
hex_dump(stdout, buf, size);
|
|
#endif
|
|
slirp_input(s->slirp, buf, size);
|
|
return size;
|
|
}
|
|
|
|
static void net_slirp_cleanup(VLANClientState *vc)
|
|
{
|
|
SlirpState *s = vc->opaque;
|
|
|
|
slirp_cleanup(s->slirp);
|
|
slirp_smb_cleanup(s);
|
|
QTAILQ_REMOVE(&slirp_stacks, s, entry);
|
|
qemu_free(s);
|
|
}
|
|
|
|
static int net_slirp_init(VLANState *vlan, const char *model,
|
|
const char *name, int restricted,
|
|
const char *vnetwork, const char *vhost,
|
|
const char *vhostname, const char *tftp_export,
|
|
const char *bootfile, const char *vdhcp_start,
|
|
const char *vnameserver, const char *smb_export,
|
|
const char *vsmbserver)
|
|
{
|
|
/* default settings according to historic slirp */
|
|
struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
|
|
struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
|
|
struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
|
|
struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
|
|
struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
|
|
#ifndef _WIN32
|
|
struct in_addr smbsrv = { .s_addr = 0 };
|
|
#endif
|
|
SlirpState *s;
|
|
char buf[20];
|
|
uint32_t addr;
|
|
int shift;
|
|
char *end;
|
|
struct slirp_config_str *config;
|
|
|
|
if (!tftp_export) {
|
|
tftp_export = legacy_tftp_prefix;
|
|
}
|
|
if (!bootfile) {
|
|
bootfile = legacy_bootp_filename;
|
|
}
|
|
|
|
if (vnetwork) {
|
|
if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
|
|
if (!inet_aton(vnetwork, &net)) {
|
|
return -1;
|
|
}
|
|
addr = ntohl(net.s_addr);
|
|
if (!(addr & 0x80000000)) {
|
|
mask.s_addr = htonl(0xff000000); /* class A */
|
|
} else if ((addr & 0xfff00000) == 0xac100000) {
|
|
mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
|
|
} else if ((addr & 0xc0000000) == 0x80000000) {
|
|
mask.s_addr = htonl(0xffff0000); /* class B */
|
|
} else if ((addr & 0xffff0000) == 0xc0a80000) {
|
|
mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
|
|
} else if ((addr & 0xffff0000) == 0xc6120000) {
|
|
mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
|
|
} else if ((addr & 0xe0000000) == 0xe0000000) {
|
|
mask.s_addr = htonl(0xffffff00); /* class C */
|
|
} else {
|
|
mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
|
|
}
|
|
} else {
|
|
if (!inet_aton(buf, &net)) {
|
|
return -1;
|
|
}
|
|
shift = strtol(vnetwork, &end, 10);
|
|
if (*end != '\0') {
|
|
if (!inet_aton(vnetwork, &mask)) {
|
|
return -1;
|
|
}
|
|
} else if (shift < 4 || shift > 32) {
|
|
return -1;
|
|
} else {
|
|
mask.s_addr = htonl(0xffffffff << (32 - shift));
|
|
}
|
|
}
|
|
net.s_addr &= mask.s_addr;
|
|
host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
|
|
dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
|
|
dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
|
|
}
|
|
|
|
if (vhost && !inet_aton(vhost, &host)) {
|
|
return -1;
|
|
}
|
|
if ((host.s_addr & mask.s_addr) != net.s_addr) {
|
|
return -1;
|
|
}
|
|
|
|
if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
|
|
return -1;
|
|
}
|
|
if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
|
|
dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
|
|
return -1;
|
|
}
|
|
|
|
if (vnameserver && !inet_aton(vnameserver, &dns)) {
|
|
return -1;
|
|
}
|
|
if ((dns.s_addr & mask.s_addr) != net.s_addr ||
|
|
dns.s_addr == host.s_addr) {
|
|
return -1;
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
s = qemu_mallocz(sizeof(SlirpState));
|
|
s->slirp = slirp_init(restricted, net, mask, host, vhostname,
|
|
tftp_export, bootfile, dhcp, dns, s);
|
|
QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
|
|
|
|
for (config = slirp_configs; config; config = config->next) {
|
|
if (config->flags & SLIRP_CFG_HOSTFWD) {
|
|
if (slirp_hostfwd(s, config->str,
|
|
config->flags & SLIRP_CFG_LEGACY) < 0)
|
|
return -1;
|
|
} else {
|
|
if (slirp_guestfwd(s, config->str,
|
|
config->flags & SLIRP_CFG_LEGACY) < 0)
|
|
return -1;
|
|
}
|
|
}
|
|
#ifndef _WIN32
|
|
if (!smb_export) {
|
|
smb_export = legacy_smb_export;
|
|
}
|
|
if (smb_export) {
|
|
if (slirp_smb(s, smb_export, smbsrv) < 0)
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
|
|
slirp_receive, NULL,
|
|
net_slirp_cleanup, s);
|
|
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
|
"net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
|
|
return 0;
|
|
}
|
|
|
|
static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
|
|
const char *stack)
|
|
{
|
|
VLANClientState *vc;
|
|
|
|
if (vlan) {
|
|
vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
|
|
if (!vc) {
|
|
return NULL;
|
|
}
|
|
if (strcmp(vc->model, "user")) {
|
|
monitor_printf(mon, "invalid device specified\n");
|
|
return NULL;
|
|
}
|
|
return vc->opaque;
|
|
} else {
|
|
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
|
monitor_printf(mon, "user mode network stack not in use\n");
|
|
return NULL;
|
|
}
|
|
return QTAILQ_FIRST(&slirp_stacks);
|
|
}
|
|
}
|
|
|
|
void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
|
|
{
|
|
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
|
int host_port;
|
|
char buf[256] = "";
|
|
const char *src_str, *p;
|
|
SlirpState *s;
|
|
int is_udp = 0;
|
|
int err;
|
|
const char *arg1 = qdict_get_str(qdict, "arg1");
|
|
const char *arg2 = qdict_get_try_str(qdict, "arg2");
|
|
const char *arg3 = qdict_get_try_str(qdict, "arg3");
|
|
|
|
if (arg2) {
|
|
s = slirp_lookup(mon, arg1, arg2);
|
|
src_str = arg3;
|
|
} else {
|
|
s = slirp_lookup(mon, NULL, NULL);
|
|
src_str = arg1;
|
|
}
|
|
if (!s) {
|
|
return;
|
|
}
|
|
|
|
if (!src_str || !src_str[0])
|
|
goto fail_syntax;
|
|
|
|
p = src_str;
|
|
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;
|
|
}
|
|
|
|
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
|
|
goto fail_syntax;
|
|
}
|
|
|
|
host_port = atoi(p);
|
|
|
|
err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
|
|
host_addr, host_port);
|
|
|
|
monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
|
|
err ? "removed" : "not found");
|
|
return;
|
|
|
|
fail_syntax:
|
|
monitor_printf(mon, "invalid format\n");
|
|
}
|
|
|
|
static int slirp_hostfwd(SlirpState *s, const char *redir_str,
|
|
int legacy_format)
|
|
{
|
|
struct in_addr host_addr = { .s_addr = INADDR_ANY };
|
|
struct in_addr guest_addr = { .s_addr = 0 };
|
|
int host_port, guest_port;
|
|
const char *p;
|
|
char buf[256];
|
|
int is_udp;
|
|
char *end;
|
|
|
|
p = redir_str;
|
|
if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
if (!strcmp(buf, "tcp") || buf[0] == '\0') {
|
|
is_udp = 0;
|
|
} else if (!strcmp(buf, "udp")) {
|
|
is_udp = 1;
|
|
} else {
|
|
goto fail_syntax;
|
|
}
|
|
|
|
if (!legacy_format) {
|
|
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
|
|
goto fail_syntax;
|
|
}
|
|
}
|
|
|
|
if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
host_port = strtol(buf, &end, 0);
|
|
if (*end != '\0' || host_port < 1 || host_port > 65535) {
|
|
goto fail_syntax;
|
|
}
|
|
|
|
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
|
|
goto fail_syntax;
|
|
}
|
|
|
|
guest_port = strtol(p, &end, 0);
|
|
if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
|
|
goto fail_syntax;
|
|
}
|
|
|
|
if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
|
|
guest_port) < 0) {
|
|
qemu_error("could not set up host forwarding rule '%s'\n",
|
|
redir_str);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
|
|
fail_syntax:
|
|
qemu_error("invalid host forwarding rule '%s'\n", redir_str);
|
|
return -1;
|
|
}
|
|
|
|
void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
|
|
{
|
|
const char *redir_str;
|
|
SlirpState *s;
|
|
const char *arg1 = qdict_get_str(qdict, "arg1");
|
|
const char *arg2 = qdict_get_try_str(qdict, "arg2");
|
|
const char *arg3 = qdict_get_try_str(qdict, "arg3");
|
|
|
|
if (arg2) {
|
|
s = slirp_lookup(mon, arg1, arg2);
|
|
redir_str = arg3;
|
|
} else {
|
|
s = slirp_lookup(mon, NULL, NULL);
|
|
redir_str = arg1;
|
|
}
|
|
if (s) {
|
|
slirp_hostfwd(s, redir_str, 0);
|
|
}
|
|
|
|
}
|
|
|
|
int net_slirp_redir(const char *redir_str)
|
|
{
|
|
struct slirp_config_str *config;
|
|
|
|
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
|
config = qemu_malloc(sizeof(*config));
|
|
pstrcpy(config->str, sizeof(config->str), redir_str);
|
|
config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
|
|
config->next = slirp_configs;
|
|
slirp_configs = config;
|
|
return 0;
|
|
}
|
|
|
|
return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
|
|
/* automatic user mode samba server configuration */
|
|
static void slirp_smb_cleanup(SlirpState *s)
|
|
{
|
|
char cmd[128];
|
|
|
|
if (s->smb_dir[0] != '\0') {
|
|
snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
|
|
system(cmd);
|
|
s->smb_dir[0] = '\0';
|
|
}
|
|
}
|
|
|
|
static int slirp_smb(SlirpState* s, const char *exported_dir,
|
|
struct in_addr vserver_addr)
|
|
{
|
|
static int instance;
|
|
char smb_conf[128];
|
|
char smb_cmdline[128];
|
|
FILE *f;
|
|
|
|
snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
|
|
(long)getpid(), instance++);
|
|
if (mkdir(s->smb_dir, 0700) < 0) {
|
|
qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
|
|
return -1;
|
|
}
|
|
snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
|
|
|
|
f = fopen(smb_conf, "w");
|
|
if (!f) {
|
|
slirp_smb_cleanup(s);
|
|
qemu_error("could not create samba server configuration file '%s'\n",
|
|
smb_conf);
|
|
return -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",
|
|
s->smb_dir,
|
|
s->smb_dir,
|
|
s->smb_dir,
|
|
s->smb_dir,
|
|
s->smb_dir,
|
|
exported_dir
|
|
);
|
|
fclose(f);
|
|
|
|
snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
|
|
SMBD_COMMAND, smb_conf);
|
|
|
|
if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
|
|
slirp_smb_cleanup(s);
|
|
qemu_error("conflicting/invalid smbserver address\n");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* automatic user mode samba server configuration (legacy interface) */
|
|
int net_slirp_smb(const char *exported_dir)
|
|
{
|
|
struct in_addr vserver_addr = { .s_addr = 0 };
|
|
|
|
if (legacy_smb_export) {
|
|
fprintf(stderr, "-smb given twice\n");
|
|
return -1;
|
|
}
|
|
legacy_smb_export = exported_dir;
|
|
if (!QTAILQ_EMPTY(&slirp_stacks)) {
|
|
return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
|
|
vserver_addr);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#endif /* !defined(_WIN32) */
|
|
|
|
struct GuestFwd {
|
|
CharDriverState *hd;
|
|
struct in_addr server;
|
|
int port;
|
|
Slirp *slirp;
|
|
};
|
|
|
|
static int guestfwd_can_read(void *opaque)
|
|
{
|
|
struct GuestFwd *fwd = opaque;
|
|
return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
|
|
}
|
|
|
|
static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
|
|
{
|
|
struct GuestFwd *fwd = opaque;
|
|
slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
|
|
}
|
|
|
|
static int slirp_guestfwd(SlirpState *s, const char *config_str,
|
|
int legacy_format)
|
|
{
|
|
struct in_addr server = { .s_addr = 0 };
|
|
struct GuestFwd *fwd;
|
|
const char *p;
|
|
char buf[128];
|
|
char *end;
|
|
int port;
|
|
|
|
p = config_str;
|
|
if (legacy_format) {
|
|
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
} else {
|
|
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
if (strcmp(buf, "tcp") && buf[0] != '\0') {
|
|
goto fail_syntax;
|
|
}
|
|
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
if (buf[0] != '\0' && !inet_aton(buf, &server)) {
|
|
goto fail_syntax;
|
|
}
|
|
if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
|
|
goto fail_syntax;
|
|
}
|
|
}
|
|
port = strtol(buf, &end, 10);
|
|
if (*end != '\0' || port < 1 || port > 65535) {
|
|
goto fail_syntax;
|
|
}
|
|
|
|
fwd = qemu_malloc(sizeof(struct GuestFwd));
|
|
snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
|
|
fwd->hd = qemu_chr_open(buf, p, NULL);
|
|
if (!fwd->hd) {
|
|
qemu_error("could not open guest forwarding device '%s'\n", buf);
|
|
qemu_free(fwd);
|
|
return -1;
|
|
}
|
|
|
|
if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
|
|
qemu_error("conflicting/invalid host:port in guest forwarding "
|
|
"rule '%s'\n", config_str);
|
|
qemu_free(fwd);
|
|
return -1;
|
|
}
|
|
fwd->server = server;
|
|
fwd->port = port;
|
|
fwd->slirp = s->slirp;
|
|
|
|
qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
|
|
NULL, fwd);
|
|
return 0;
|
|
|
|
fail_syntax:
|
|
qemu_error("invalid guest forwarding rule '%s'\n", config_str);
|
|
return -1;
|
|
}
|
|
|
|
void do_info_usernet(Monitor *mon)
|
|
{
|
|
SlirpState *s;
|
|
|
|
QTAILQ_FOREACH(s, &slirp_stacks, entry) {
|
|
monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
|
|
slirp_connection_info(s->slirp, mon);
|
|
}
|
|
}
|
|
|
|
#endif /* CONFIG_SLIRP */
|
|
|
|
#if !defined(_WIN32)
|
|
|
|
/* Maximum GSO packet size (64k) plus plenty of room for
|
|
* the ethernet and virtio_net headers
|
|
*/
|
|
#define TAP_BUFSIZE (4096 + 65536)
|
|
|
|
typedef struct TAPState {
|
|
VLANClientState *vc;
|
|
int fd;
|
|
char down_script[1024];
|
|
char down_script_arg[128];
|
|
uint8_t buf[TAP_BUFSIZE];
|
|
unsigned int read_poll : 1;
|
|
unsigned int write_poll : 1;
|
|
unsigned int has_vnet_hdr : 1;
|
|
} TAPState;
|
|
|
|
static int launch_script(const char *setup_script, const char *ifname, int fd);
|
|
|
|
static int tap_can_send(void *opaque);
|
|
static void tap_send(void *opaque);
|
|
static void tap_writable(void *opaque);
|
|
|
|
static void tap_update_fd_handler(TAPState *s)
|
|
{
|
|
qemu_set_fd_handler2(s->fd,
|
|
s->read_poll ? tap_can_send : NULL,
|
|
s->read_poll ? tap_send : NULL,
|
|
s->write_poll ? tap_writable : NULL,
|
|
s);
|
|
}
|
|
|
|
static void tap_read_poll(TAPState *s, int enable)
|
|
{
|
|
s->read_poll = !!enable;
|
|
tap_update_fd_handler(s);
|
|
}
|
|
|
|
static void tap_write_poll(TAPState *s, int enable)
|
|
{
|
|
s->write_poll = !!enable;
|
|
tap_update_fd_handler(s);
|
|
}
|
|
|
|
static void tap_writable(void *opaque)
|
|
{
|
|
TAPState *s = opaque;
|
|
|
|
tap_write_poll(s, 0);
|
|
|
|
qemu_flush_queued_packets(s->vc);
|
|
}
|
|
|
|
static ssize_t tap_write_packet(TAPState *s, const struct iovec *iov, int iovcnt)
|
|
{
|
|
ssize_t len;
|
|
|
|
do {
|
|
len = writev(s->fd, iov, iovcnt);
|
|
} while (len == -1 && errno == EINTR);
|
|
|
|
if (len == -1 && errno == EAGAIN) {
|
|
tap_write_poll(s, 1);
|
|
return 0;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
|
|
int iovcnt)
|
|
{
|
|
TAPState *s = vc->opaque;
|
|
const struct iovec *iovp = iov;
|
|
struct iovec iov_copy[iovcnt + 1];
|
|
struct virtio_net_hdr hdr = { 0, };
|
|
|
|
if (s->has_vnet_hdr) {
|
|
iov_copy[0].iov_base = &hdr;
|
|
iov_copy[0].iov_len = sizeof(hdr);
|
|
memcpy(&iov_copy[1], iov, iovcnt * sizeof(*iov));
|
|
iovp = iov_copy;
|
|
iovcnt++;
|
|
}
|
|
|
|
return tap_write_packet(s, iovp, iovcnt);
|
|
}
|
|
|
|
static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
|
|
{
|
|
TAPState *s = vc->opaque;
|
|
struct iovec iov[2];
|
|
int iovcnt = 0;
|
|
struct virtio_net_hdr hdr = { 0, };
|
|
|
|
if (s->has_vnet_hdr) {
|
|
iov[iovcnt].iov_base = &hdr;
|
|
iov[iovcnt].iov_len = sizeof(hdr);
|
|
iovcnt++;
|
|
}
|
|
|
|
iov[iovcnt].iov_base = (char *)buf;
|
|
iov[iovcnt].iov_len = size;
|
|
iovcnt++;
|
|
|
|
return tap_write_packet(s, iov, iovcnt);
|
|
}
|
|
|
|
static int tap_can_send(void *opaque)
|
|
{
|
|
TAPState *s = opaque;
|
|
|
|
return qemu_can_send_packet(s->vc);
|
|
}
|
|
|
|
#ifdef __sun__
|
|
static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
|
|
{
|
|
struct strbuf sbuf;
|
|
int f = 0;
|
|
|
|
sbuf.maxlen = maxlen;
|
|
sbuf.buf = (char *)buf;
|
|
|
|
return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
|
|
}
|
|
#else
|
|
static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
|
|
{
|
|
return read(tapfd, buf, maxlen);
|
|
}
|
|
#endif
|
|
|
|
static void tap_send_completed(VLANClientState *vc, ssize_t len)
|
|
{
|
|
TAPState *s = vc->opaque;
|
|
tap_read_poll(s, 1);
|
|
}
|
|
|
|
static void tap_send(void *opaque)
|
|
{
|
|
TAPState *s = opaque;
|
|
int size;
|
|
|
|
do {
|
|
uint8_t *buf = s->buf;
|
|
|
|
size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
|
|
if (size <= 0) {
|
|
break;
|
|
}
|
|
|
|
if (s->has_vnet_hdr) {
|
|
buf += sizeof(struct virtio_net_hdr);
|
|
size -= sizeof(struct virtio_net_hdr);
|
|
}
|
|
|
|
size = qemu_send_packet_async(s->vc, buf, size, tap_send_completed);
|
|
if (size == 0) {
|
|
tap_read_poll(s, 0);
|
|
}
|
|
} while (size > 0);
|
|
}
|
|
|
|
/* sndbuf should be set to a value lower than the tx queue
|
|
* capacity of any destination network interface.
|
|
* Ethernet NICs generally have txqueuelen=1000, so 1Mb is
|
|
* a good default, given a 1500 byte MTU.
|
|
*/
|
|
#define TAP_DEFAULT_SNDBUF 1024*1024
|
|
|
|
static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
|
|
{
|
|
int sndbuf;
|
|
|
|
sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF);
|
|
if (!sndbuf) {
|
|
sndbuf = INT_MAX;
|
|
}
|
|
|
|
if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) {
|
|
qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno));
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int tap_probe_vnet_hdr(int fd)
|
|
{
|
|
struct ifreq ifr;
|
|
|
|
if (ioctl(fd, TUNGETIFF, &ifr) != 0) {
|
|
qemu_error("TUNGETIFF ioctl() failed: %s\n", strerror(errno));
|
|
return 0;
|
|
}
|
|
|
|
return ifr.ifr_flags & IFF_VNET_HDR;
|
|
}
|
|
|
|
static void tap_cleanup(VLANClientState *vc)
|
|
{
|
|
TAPState *s = vc->opaque;
|
|
|
|
qemu_purge_queued_packets(vc);
|
|
|
|
if (s->down_script[0])
|
|
launch_script(s->down_script, s->down_script_arg, s->fd);
|
|
|
|
tap_read_poll(s, 0);
|
|
tap_write_poll(s, 0);
|
|
close(s->fd);
|
|
qemu_free(s);
|
|
}
|
|
|
|
/* fd support */
|
|
|
|
static TAPState *net_tap_fd_init(VLANState *vlan,
|
|
const char *model,
|
|
const char *name,
|
|
int fd,
|
|
int vnet_hdr)
|
|
{
|
|
TAPState *s;
|
|
|
|
s = qemu_mallocz(sizeof(TAPState));
|
|
s->fd = fd;
|
|
s->has_vnet_hdr = vnet_hdr != 0;
|
|
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
|
|
tap_receive, tap_receive_iov,
|
|
tap_cleanup, s);
|
|
tap_read_poll(s, 1);
|
|
return s;
|
|
}
|
|
|
|
#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
|
|
static int tap_open(char *ifname, int ifname_size, int *vnet_hdr)
|
|
{
|
|
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).
|
|
*/
|
|
static 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 && !qemu_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 *)𝔦
|
|
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, int *vnet_hdr)
|
|
{
|
|
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;
|
|
}
|
|
#elif defined (_AIX)
|
|
static int tap_open(char *ifname, int ifname_size, int *vnet_hdr)
|
|
{
|
|
fprintf (stderr, "no tap on AIX\n");
|
|
return -1;
|
|
}
|
|
#else
|
|
static int tap_open(char *ifname, int ifname_size, int *vnet_hdr)
|
|
{
|
|
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;
|
|
|
|
{
|
|
unsigned int features;
|
|
|
|
if (ioctl(fd, TUNGETFEATURES, &features) == 0 &&
|
|
features & IFF_VNET_HDR) {
|
|
*vnet_hdr = 1;
|
|
ifr.ifr_flags |= IFF_VNET_HDR;
|
|
}
|
|
}
|
|
|
|
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)
|
|
{
|
|
sigset_t oldmask, mask;
|
|
int pid, status;
|
|
char *args[3];
|
|
char **parg;
|
|
|
|
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);
|
|
}
|
|
}
|
|
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;
|
|
}
|
|
|
|
static int net_tap_init(QemuOpts *opts, int *vnet_hdr)
|
|
{
|
|
int fd;
|
|
char ifname[128] = {0,};
|
|
const char *setup_script;
|
|
|
|
if (qemu_opt_get(opts, "ifname")) {
|
|
pstrcpy(ifname, sizeof(ifname), qemu_opt_get(opts, "ifname"));
|
|
}
|
|
|
|
*vnet_hdr = 0;
|
|
TFR(fd = tap_open(ifname, sizeof(ifname), vnet_hdr));
|
|
if (fd < 0) {
|
|
return -1;
|
|
}
|
|
|
|
setup_script = qemu_opt_get(opts, "script");
|
|
if (setup_script &&
|
|
setup_script[0] != '\0' &&
|
|
strcmp(setup_script, "no") != 0 &&
|
|
launch_script(setup_script, ifname, fd)) {
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
|
|
qemu_opt_set(opts, "ifname", ifname);
|
|
|
|
return fd;
|
|
}
|
|
|
|
#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, (char *)buf, sizeof(buf), 0);
|
|
if (size > 0) {
|
|
qemu_send_packet(s->vc, buf, size);
|
|
}
|
|
}
|
|
|
|
static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
|
|
{
|
|
VDEState *s = vc->opaque;
|
|
ssize_t ret;
|
|
|
|
do {
|
|
ret = vde_send(s->vde, (const char *)buf, size, 0);
|
|
} while (ret < 0 && errno == EINTR);
|
|
|
|
return ret;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
static int net_vde_init(VLANState *vlan, const char *model,
|
|
const char *name, const char *sock,
|
|
int port, const char *group, int mode)
|
|
{
|
|
VDEState *s;
|
|
char *init_group = (char *)group;
|
|
char *init_sock = (char *)sock;
|
|
|
|
struct vde_open_args args = {
|
|
.port = port,
|
|
.group = init_group,
|
|
.mode = mode,
|
|
};
|
|
|
|
s = qemu_mallocz(sizeof(VDEState));
|
|
s->vde = vde_open(init_sock, (char *)"QEMU", &args);
|
|
if (!s->vde){
|
|
free(s);
|
|
return -1;
|
|
}
|
|
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
|
|
vde_receive, NULL,
|
|
vde_cleanup, s);
|
|
qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
|
|
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "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 */
|
|
unsigned int index;
|
|
unsigned 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;
|
|
char *model;
|
|
char *name;
|
|
int fd;
|
|
} NetSocketListenState;
|
|
|
|
/* XXX: we consider we can send the whole packet without blocking */
|
|
static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
|
|
{
|
|
NetSocketState *s = vc->opaque;
|
|
uint32_t len;
|
|
len = htonl(size);
|
|
|
|
send_all(s->fd, (const uint8_t *)&len, sizeof(len));
|
|
return send_all(s->fd, buf, size);
|
|
}
|
|
|
|
static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
|
|
{
|
|
NetSocketState *s = vc->opaque;
|
|
|
|
return sendto(s->fd, (const void *)buf, size, 0,
|
|
(struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
|
|
}
|
|
|
|
static void net_socket_send(void *opaque)
|
|
{
|
|
NetSocketState *s = opaque;
|
|
int size, err;
|
|
unsigned l;
|
|
uint8_t buf1[4096];
|
|
const uint8_t *buf;
|
|
|
|
size = recv(s->fd, (void *)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;
|
|
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;
|
|
}
|
|
|
|
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, (void *)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 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);
|
|
}
|
|
|
|
static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
|
|
const char *model,
|
|
const char *name,
|
|
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));
|
|
s->fd = fd;
|
|
|
|
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
|
|
net_socket_receive_dgram, NULL,
|
|
net_socket_cleanup, 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,
|
|
const char *model,
|
|
const char *name,
|
|
int fd, int is_connected)
|
|
{
|
|
NetSocketState *s;
|
|
s = qemu_mallocz(sizeof(NetSocketState));
|
|
s->fd = fd;
|
|
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
|
|
net_socket_receive, NULL,
|
|
net_socket_cleanup, 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,
|
|
const char *model, const char *name,
|
|
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, model, name, fd, is_connected);
|
|
case SOCK_STREAM:
|
|
return net_socket_fd_init_stream(vlan, model, name, 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, model, name, 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, s->model, s->name, 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 *model,
|
|
const char *name,
|
|
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));
|
|
|
|
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->model = qemu_strdup(model);
|
|
s->name = name ? qemu_strdup(name) : NULL;
|
|
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 *model,
|
|
const char *name,
|
|
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, model, name, 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 *model,
|
|
const char *name,
|
|
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, model, name, 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;
|
|
|
|
}
|
|
|
|
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;
|
|
};
|
|
|
|
static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
|
|
{
|
|
DumpState *s = vc->opaque;
|
|
struct pcap_sf_pkthdr hdr;
|
|
int64_t ts;
|
|
int caplen;
|
|
|
|
/* Early return in case of previous error. */
|
|
if (s->fd < 0) {
|
|
return size;
|
|
}
|
|
|
|
ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
|
|
caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
|
|
|
|
hdr.ts.tv_sec = ts / 1000000;
|
|
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;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static void net_dump_cleanup(VLANClientState *vc)
|
|
{
|
|
DumpState *s = vc->opaque;
|
|
|
|
close(s->fd);
|
|
qemu_free(s);
|
|
}
|
|
|
|
static int net_dump_init(VLANState *vlan, const char *device,
|
|
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 | O_BINARY, 0644);
|
|
if (s->fd < 0) {
|
|
qemu_error("-net dump: can't open %s\n", filename);
|
|
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)) {
|
|
qemu_error("-net dump write error: %s\n", strerror(errno));
|
|
close(s->fd);
|
|
qemu_free(s);
|
|
return -1;
|
|
}
|
|
|
|
s->pcap_vc = qemu_new_vlan_client(vlan, NULL, device, name, NULL,
|
|
dump_receive, NULL,
|
|
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;
|
|
}
|
|
|
|
/* find or alloc a new VLAN */
|
|
VLANState *qemu_find_vlan(int id, int allocate)
|
|
{
|
|
VLANState *vlan;
|
|
|
|
QTAILQ_FOREACH(vlan, &vlans, next) {
|
|
if (vlan->id == id) {
|
|
return vlan;
|
|
}
|
|
}
|
|
|
|
if (!allocate) {
|
|
return NULL;
|
|
}
|
|
|
|
vlan = qemu_mallocz(sizeof(VLANState));
|
|
vlan->id = id;
|
|
QTAILQ_INIT(&vlan->clients);
|
|
|
|
vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
|
|
qemu_vlan_deliver_packet_iov,
|
|
vlan);
|
|
|
|
QTAILQ_INSERT_TAIL(&vlans, vlan, next);
|
|
|
|
return vlan;
|
|
}
|
|
|
|
VLANClientState *qemu_find_netdev(const char *id)
|
|
{
|
|
VLANClientState *vc;
|
|
|
|
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
|
|
if (!strcmp(vc->name, id)) {
|
|
return vc;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
int qemu_show_nic_models(const char *arg, const char *const *models)
|
|
{
|
|
int i;
|
|
|
|
if (!arg || strcmp(arg, "?"))
|
|
return 0;
|
|
|
|
fprintf(stderr, "qemu: Supported NIC models: ");
|
|
for (i = 0 ; models[i]; i++)
|
|
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
|
|
return 1;
|
|
}
|
|
|
|
void qemu_check_nic_model(NICInfo *nd, const char *model)
|
|
{
|
|
const char *models[2];
|
|
|
|
models[0] = model;
|
|
models[1] = NULL;
|
|
|
|
if (qemu_show_nic_models(nd->model, models))
|
|
exit(0);
|
|
if (qemu_find_nic_model(nd, models, model) < 0)
|
|
exit(1);
|
|
}
|
|
|
|
int qemu_find_nic_model(NICInfo *nd, const char * const *models,
|
|
const char *default_model)
|
|
{
|
|
int i;
|
|
|
|
if (!nd->model)
|
|
nd->model = qemu_strdup(default_model);
|
|
|
|
for (i = 0 ; models[i]; i++) {
|
|
if (strcmp(nd->model, models[i]) == 0)
|
|
return i;
|
|
}
|
|
|
|
qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
|
|
return -1;
|
|
}
|
|
|
|
static int net_handle_fd_param(Monitor *mon, const char *param)
|
|
{
|
|
if (!qemu_isdigit(param[0])) {
|
|
int fd;
|
|
|
|
fd = monitor_get_fd(mon, param);
|
|
if (fd == -1) {
|
|
qemu_error("No file descriptor named %s found", param);
|
|
return -1;
|
|
}
|
|
|
|
return fd;
|
|
} else {
|
|
return strtol(param, NULL, 0);
|
|
}
|
|
}
|
|
|
|
static int net_init_nic(QemuOpts *opts,
|
|
Monitor *mon,
|
|
const char *name,
|
|
VLANState *vlan)
|
|
{
|
|
int idx;
|
|
NICInfo *nd;
|
|
const char *netdev;
|
|
|
|
idx = nic_get_free_idx();
|
|
if (idx == -1 || nb_nics >= MAX_NICS) {
|
|
qemu_error("Too Many NICs\n");
|
|
return -1;
|
|
}
|
|
|
|
nd = &nd_table[idx];
|
|
|
|
memset(nd, 0, sizeof(*nd));
|
|
|
|
if ((netdev = qemu_opt_get(opts, "netdev"))) {
|
|
nd->netdev = qemu_find_netdev(netdev);
|
|
if (!nd->netdev) {
|
|
qemu_error("netdev '%s' not found\n", netdev);
|
|
return -1;
|
|
}
|
|
} else {
|
|
assert(vlan);
|
|
nd->vlan = vlan;
|
|
}
|
|
if (name) {
|
|
nd->name = qemu_strdup(name);
|
|
}
|
|
if (qemu_opt_get(opts, "model")) {
|
|
nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
|
|
}
|
|
if (qemu_opt_get(opts, "addr")) {
|
|
nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
|
|
}
|
|
|
|
nd->macaddr[0] = 0x52;
|
|
nd->macaddr[1] = 0x54;
|
|
nd->macaddr[2] = 0x00;
|
|
nd->macaddr[3] = 0x12;
|
|
nd->macaddr[4] = 0x34;
|
|
nd->macaddr[5] = 0x56 + idx;
|
|
|
|
if (qemu_opt_get(opts, "macaddr") &&
|
|
parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
|
|
qemu_error("invalid syntax for ethernet address\n");
|
|
return -1;
|
|
}
|
|
|
|
nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
|
|
if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
|
|
(nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
|
|
qemu_error("invalid # of vectors: %d\n", nd->nvectors);
|
|
return -1;
|
|
}
|
|
|
|
nd->used = 1;
|
|
if (vlan) {
|
|
nd->vlan->nb_guest_devs++;
|
|
}
|
|
nb_nics++;
|
|
|
|
return idx;
|
|
}
|
|
|
|
#if defined(CONFIG_SLIRP)
|
|
static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
|
|
{
|
|
struct slirp_config_str *config;
|
|
|
|
if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
|
|
return 0;
|
|
}
|
|
|
|
config = qemu_mallocz(sizeof(*config));
|
|
|
|
pstrcpy(config->str, sizeof(config->str), value);
|
|
|
|
if (!strcmp(name, "hostfwd")) {
|
|
config->flags = SLIRP_CFG_HOSTFWD;
|
|
}
|
|
|
|
config->next = slirp_configs;
|
|
slirp_configs = config;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int net_init_slirp(QemuOpts *opts,
|
|
Monitor *mon,
|
|
const char *name,
|
|
VLANState *vlan)
|
|
{
|
|
struct slirp_config_str *config;
|
|
const char *vhost;
|
|
const char *vhostname;
|
|
const char *vdhcp_start;
|
|
const char *vnamesrv;
|
|
const char *tftp_export;
|
|
const char *bootfile;
|
|
const char *smb_export;
|
|
const char *vsmbsrv;
|
|
char *vnet = NULL;
|
|
int restricted = 0;
|
|
int ret;
|
|
|
|
vhost = qemu_opt_get(opts, "host");
|
|
vhostname = qemu_opt_get(opts, "hostname");
|
|
vdhcp_start = qemu_opt_get(opts, "dhcpstart");
|
|
vnamesrv = qemu_opt_get(opts, "dns");
|
|
tftp_export = qemu_opt_get(opts, "tftp");
|
|
bootfile = qemu_opt_get(opts, "bootfile");
|
|
smb_export = qemu_opt_get(opts, "smb");
|
|
vsmbsrv = qemu_opt_get(opts, "smbserver");
|
|
|
|
if (qemu_opt_get(opts, "ip")) {
|
|
const char *ip = qemu_opt_get(opts, "ip");
|
|
int l = strlen(ip) + strlen("/24") + 1;
|
|
|
|
vnet = qemu_malloc(l);
|
|
|
|
/* emulate legacy ip= parameter */
|
|
pstrcpy(vnet, l, ip);
|
|
pstrcat(vnet, l, "/24");
|
|
}
|
|
|
|
if (qemu_opt_get(opts, "net")) {
|
|
if (vnet) {
|
|
qemu_free(vnet);
|
|
}
|
|
vnet = qemu_strdup(qemu_opt_get(opts, "net"));
|
|
}
|
|
|
|
if (qemu_opt_get(opts, "restrict") &&
|
|
qemu_opt_get(opts, "restrict")[0] == 'y') {
|
|
restricted = 1;
|
|
}
|
|
|
|
qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
|
|
|
|
ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
|
|
vhostname, tftp_export, bootfile, vdhcp_start,
|
|
vnamesrv, smb_export, vsmbsrv);
|
|
|
|
while (slirp_configs) {
|
|
config = slirp_configs;
|
|
slirp_configs = config->next;
|
|
qemu_free(config);
|
|
}
|
|
|
|
if (ret != -1 && vlan) {
|
|
vlan->nb_host_devs++;
|
|
}
|
|
|
|
qemu_free(vnet);
|
|
|
|
return ret;
|
|
}
|
|
#endif /* CONFIG_SLIRP */
|
|
|
|
#ifdef _WIN32
|
|
static int net_init_tap_win32(QemuOpts *opts,
|
|
Monitor *mon,
|
|
const char *name,
|
|
VLANState *vlan)
|
|
{
|
|
const char *ifname;
|
|
|
|
ifname = qemu_opt_get(opts, "ifname");
|
|
|
|
if (!ifname) {
|
|
qemu_error("tap: no interface name\n");
|
|
return -1;
|
|
}
|
|
|
|
if (tap_win32_init(vlan, "tap", name, ifname) == -1) {
|
|
return -1;
|
|
}
|
|
|
|
if (vlan) {
|
|
vlan->nb_host_devs++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#elif !defined(_AIX)
|
|
static int net_init_tap(QemuOpts *opts,
|
|
Monitor *mon,
|
|
const char *name,
|
|
VLANState *vlan)
|
|
{
|
|
TAPState *s;
|
|
int fd, vnet_hdr;
|
|
|
|
if (qemu_opt_get(opts, "fd")) {
|
|
if (qemu_opt_get(opts, "ifname") ||
|
|
qemu_opt_get(opts, "script") ||
|
|
qemu_opt_get(opts, "downscript")) {
|
|
qemu_error("ifname=, script= and downscript= is invalid with fd=\n");
|
|
return -1;
|
|
}
|
|
|
|
fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
|
|
if (fd == -1) {
|
|
return -1;
|
|
}
|
|
|
|
fcntl(fd, F_SETFL, O_NONBLOCK);
|
|
|
|
vnet_hdr = tap_probe_vnet_hdr(fd);
|
|
} else {
|
|
if (!qemu_opt_get(opts, "script")) {
|
|
qemu_opt_set(opts, "script", DEFAULT_NETWORK_SCRIPT);
|
|
}
|
|
|
|
if (!qemu_opt_get(opts, "downscript")) {
|
|
qemu_opt_set(opts, "downscript", DEFAULT_NETWORK_DOWN_SCRIPT);
|
|
}
|
|
|
|
fd = net_tap_init(opts, &vnet_hdr);
|
|
}
|
|
|
|
s = net_tap_fd_init(vlan, "tap", name, fd, vnet_hdr);
|
|
if (!s) {
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
|
|
if (tap_set_sndbuf(s, opts) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
if (qemu_opt_get(opts, "fd")) {
|
|
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
|
|
} else {
|
|
const char *ifname, *script, *downscript;
|
|
|
|
ifname = qemu_opt_get(opts, "ifname");
|
|
script = qemu_opt_get(opts, "script");
|
|
downscript = qemu_opt_get(opts, "downscript");
|
|
|
|
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
|
"ifname=%s,script=%s,downscript=%s",
|
|
ifname, script, downscript);
|
|
|
|
if (strcmp(downscript, "no") != 0) {
|
|
snprintf(s->down_script, sizeof(s->down_script), "%s", downscript);
|
|
snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
|
|
}
|
|
}
|
|
|
|
if (vlan) {
|
|
vlan->nb_host_devs++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int net_init_socket(QemuOpts *opts,
|
|
Monitor *mon,
|
|
const char *name,
|
|
VLANState *vlan)
|
|
{
|
|
if (qemu_opt_get(opts, "fd")) {
|
|
int fd;
|
|
|
|
if (qemu_opt_get(opts, "listen") ||
|
|
qemu_opt_get(opts, "connect") ||
|
|
qemu_opt_get(opts, "mcast")) {
|
|
qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
|
|
return -1;
|
|
}
|
|
|
|
fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
|
|
if (fd == -1) {
|
|
return -1;
|
|
}
|
|
|
|
if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) {
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
} else if (qemu_opt_get(opts, "listen")) {
|
|
const char *listen;
|
|
|
|
if (qemu_opt_get(opts, "fd") ||
|
|
qemu_opt_get(opts, "connect") ||
|
|
qemu_opt_get(opts, "mcast")) {
|
|
qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
|
|
return -1;
|
|
}
|
|
|
|
listen = qemu_opt_get(opts, "listen");
|
|
|
|
if (net_socket_listen_init(vlan, "socket", name, listen) == -1) {
|
|
return -1;
|
|
}
|
|
} else if (qemu_opt_get(opts, "connect")) {
|
|
const char *connect;
|
|
|
|
if (qemu_opt_get(opts, "fd") ||
|
|
qemu_opt_get(opts, "listen") ||
|
|
qemu_opt_get(opts, "mcast")) {
|
|
qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
|
|
return -1;
|
|
}
|
|
|
|
connect = qemu_opt_get(opts, "connect");
|
|
|
|
if (net_socket_connect_init(vlan, "socket", name, connect) == -1) {
|
|
return -1;
|
|
}
|
|
} else if (qemu_opt_get(opts, "mcast")) {
|
|
const char *mcast;
|
|
|
|
if (qemu_opt_get(opts, "fd") ||
|
|
qemu_opt_get(opts, "connect") ||
|
|
qemu_opt_get(opts, "listen")) {
|
|
qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
|
|
return -1;
|
|
}
|
|
|
|
mcast = qemu_opt_get(opts, "mcast");
|
|
|
|
if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) {
|
|
return -1;
|
|
}
|
|
} else {
|
|
qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
|
|
return -1;
|
|
}
|
|
|
|
if (vlan) {
|
|
vlan->nb_host_devs++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_VDE
|
|
static int net_init_vde(QemuOpts *opts,
|
|
Monitor *mon,
|
|
const char *name,
|
|
VLANState *vlan)
|
|
{
|
|
const char *sock;
|
|
const char *group;
|
|
int port, mode;
|
|
|
|
sock = qemu_opt_get(opts, "sock");
|
|
group = qemu_opt_get(opts, "group");
|
|
|
|
port = qemu_opt_get_number(opts, "port", 0);
|
|
mode = qemu_opt_get_number(opts, "mode", 0700);
|
|
|
|
if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) {
|
|
return -1;
|
|
}
|
|
|
|
if (vlan) {
|
|
vlan->nb_host_devs++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int net_init_dump(QemuOpts *opts,
|
|
Monitor *mon,
|
|
const char *name,
|
|
VLANState *vlan)
|
|
{
|
|
int len;
|
|
const char *file;
|
|
char def_file[128];
|
|
|
|
assert(vlan);
|
|
|
|
file = qemu_opt_get(opts, "file");
|
|
if (!file) {
|
|
snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id);
|
|
file = def_file;
|
|
}
|
|
|
|
len = qemu_opt_get_size(opts, "len", 65536);
|
|
|
|
return net_dump_init(vlan, "dump", name, file, len);
|
|
}
|
|
|
|
#define NET_COMMON_PARAMS_DESC \
|
|
{ \
|
|
.name = "type", \
|
|
.type = QEMU_OPT_STRING, \
|
|
.help = "net client type (nic, tap etc.)", \
|
|
}, { \
|
|
.name = "vlan", \
|
|
.type = QEMU_OPT_NUMBER, \
|
|
.help = "vlan number", \
|
|
}, { \
|
|
.name = "name", \
|
|
.type = QEMU_OPT_STRING, \
|
|
.help = "identifier for monitor commands", \
|
|
}
|
|
|
|
typedef int (*net_client_init_func)(QemuOpts *opts,
|
|
Monitor *mon,
|
|
const char *name,
|
|
VLANState *vlan);
|
|
|
|
/* magic number, but compiler will warn if too small */
|
|
#define NET_MAX_DESC 20
|
|
|
|
static struct {
|
|
const char *type;
|
|
net_client_init_func init;
|
|
QemuOptDesc desc[NET_MAX_DESC];
|
|
} net_client_types[] = {
|
|
{
|
|
.type = "none",
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{ /* end of list */ }
|
|
},
|
|
}, {
|
|
.type = "nic",
|
|
.init = net_init_nic,
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{
|
|
.name = "netdev",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "id of -netdev to connect to",
|
|
},
|
|
{
|
|
.name = "macaddr",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "MAC address",
|
|
}, {
|
|
.name = "model",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "device model (e1000, rtl8139, virtio etc.)",
|
|
}, {
|
|
.name = "addr",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "PCI device address",
|
|
}, {
|
|
.name = "vectors",
|
|
.type = QEMU_OPT_NUMBER,
|
|
.help = "number of MSI-x vectors, 0 to disable MSI-X",
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
#ifdef CONFIG_SLIRP
|
|
}, {
|
|
.type = "user",
|
|
.init = net_init_slirp,
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{
|
|
.name = "hostname",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "client hostname reported by the builtin DHCP server",
|
|
}, {
|
|
.name = "restrict",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "isolate the guest from the host (y|yes|n|no)",
|
|
}, {
|
|
.name = "ip",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "legacy parameter, use net= instead",
|
|
}, {
|
|
.name = "net",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "IP address and optional netmask",
|
|
}, {
|
|
.name = "host",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "guest-visible address of the host",
|
|
}, {
|
|
.name = "tftp",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "root directory of the built-in TFTP server",
|
|
}, {
|
|
.name = "bootfile",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "BOOTP filename, for use with tftp=",
|
|
}, {
|
|
.name = "dhcpstart",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "the first of the 16 IPs the built-in DHCP server can assign",
|
|
}, {
|
|
.name = "dns",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "guest-visible address of the virtual nameserver",
|
|
}, {
|
|
.name = "smb",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "root directory of the built-in SMB server",
|
|
}, {
|
|
.name = "smbserver",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "IP address of the built-in SMB server",
|
|
}, {
|
|
.name = "hostfwd",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "guest port number to forward incoming TCP or UDP connections",
|
|
}, {
|
|
.name = "guestfwd",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "IP address and port to forward guest TCP connections",
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
#endif
|
|
#ifdef _WIN32
|
|
}, {
|
|
.type = "tap",
|
|
.init = net_init_tap_win32,
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{
|
|
.name = "ifname",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "interface name",
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
#elif !defined(_AIX)
|
|
}, {
|
|
.type = "tap",
|
|
.init = net_init_tap,
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{
|
|
.name = "fd",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "file descriptor of an already opened tap",
|
|
}, {
|
|
.name = "ifname",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "interface name",
|
|
}, {
|
|
.name = "script",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "script to initialize the interface",
|
|
}, {
|
|
.name = "downscript",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "script to shut down the interface",
|
|
}, {
|
|
.name = "sndbuf",
|
|
.type = QEMU_OPT_SIZE,
|
|
.help = "send buffer limit"
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
#endif
|
|
}, {
|
|
.type = "socket",
|
|
.init = net_init_socket,
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{
|
|
.name = "fd",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "file descriptor of an already opened socket",
|
|
}, {
|
|
.name = "listen",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "port number, and optional hostname, to listen on",
|
|
}, {
|
|
.name = "connect",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "port number, and optional hostname, to connect to",
|
|
}, {
|
|
.name = "mcast",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "UDP multicast address and port number",
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
#ifdef CONFIG_VDE
|
|
}, {
|
|
.type = "vde",
|
|
.init = net_init_vde,
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{
|
|
.name = "sock",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "socket path",
|
|
}, {
|
|
.name = "port",
|
|
.type = QEMU_OPT_NUMBER,
|
|
.help = "port number",
|
|
}, {
|
|
.name = "group",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "group owner of socket",
|
|
}, {
|
|
.name = "mode",
|
|
.type = QEMU_OPT_NUMBER,
|
|
.help = "permissions for socket",
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
#endif
|
|
}, {
|
|
.type = "dump",
|
|
.init = net_init_dump,
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{
|
|
.name = "len",
|
|
.type = QEMU_OPT_SIZE,
|
|
.help = "per-packet size limit (64k default)",
|
|
}, {
|
|
.name = "file",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "dump file path (default is qemu-vlan0.pcap)",
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
},
|
|
{ /* end of list */ }
|
|
};
|
|
|
|
int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
|
|
{
|
|
const char *name;
|
|
const char *type;
|
|
int i;
|
|
|
|
type = qemu_opt_get(opts, "type");
|
|
if (!type) {
|
|
qemu_error("No type specified for -net\n");
|
|
return -1;
|
|
}
|
|
|
|
if (is_netdev) {
|
|
if (strcmp(type, "tap") != 0 &&
|
|
#ifdef CONFIG_SLIRP
|
|
strcmp(type, "user") != 0 &&
|
|
#endif
|
|
#ifdef CONFIG_VDE
|
|
strcmp(type, "vde") != 0 &&
|
|
#endif
|
|
strcmp(type, "socket") != 0) {
|
|
qemu_error("The '%s' network backend type is not valid with -netdev\n",
|
|
type);
|
|
return -1;
|
|
}
|
|
|
|
if (qemu_opt_get(opts, "vlan")) {
|
|
qemu_error("The 'vlan' parameter is not valid with -netdev\n");
|
|
return -1;
|
|
}
|
|
if (qemu_opt_get(opts, "name")) {
|
|
qemu_error("The 'name' parameter is not valid with -netdev\n");
|
|
return -1;
|
|
}
|
|
if (!qemu_opts_id(opts)) {
|
|
qemu_error("The id= parameter is required with -netdev\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
name = qemu_opts_id(opts);
|
|
if (!name) {
|
|
name = qemu_opt_get(opts, "name");
|
|
}
|
|
|
|
for (i = 0; net_client_types[i].type != NULL; i++) {
|
|
if (!strcmp(net_client_types[i].type, type)) {
|
|
VLANState *vlan = NULL;
|
|
|
|
if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
|
|
return -1;
|
|
}
|
|
|
|
/* Do not add to a vlan if it's a -netdev or a nic with a
|
|
* netdev= parameter. */
|
|
if (!(is_netdev ||
|
|
(strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
|
|
vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
|
|
}
|
|
|
|
if (net_client_types[i].init) {
|
|
return net_client_types[i].init(opts, mon, name, vlan);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
qemu_error("Invalid -net type '%s'\n", type);
|
|
return -1;
|
|
}
|
|
|
|
void net_client_uninit(NICInfo *nd)
|
|
{
|
|
if (nd->vlan) {
|
|
nd->vlan->nb_guest_devs--;
|
|
}
|
|
nb_nics--;
|
|
|
|
qemu_free(nd->model);
|
|
qemu_free(nd->name);
|
|
qemu_free(nd->devaddr);
|
|
|
|
nd->used = 0;
|
|
}
|
|
|
|
static int net_host_check_device(const char *device)
|
|
{
|
|
int i;
|
|
const char *valid_param_list[] = { "tap", "socket", "dump"
|
|
#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;
|
|
}
|
|
|
|
void net_host_device_add(Monitor *mon, const QDict *qdict)
|
|
{
|
|
const char *device = qdict_get_str(qdict, "device");
|
|
const char *opts_str = qdict_get_try_str(qdict, "opts");
|
|
QemuOpts *opts;
|
|
|
|
if (!net_host_check_device(device)) {
|
|
monitor_printf(mon, "invalid host network device %s\n", device);
|
|
return;
|
|
}
|
|
|
|
opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
|
|
if (!opts) {
|
|
monitor_printf(mon, "parsing network options '%s' failed\n",
|
|
opts_str ? opts_str : "");
|
|
return;
|
|
}
|
|
|
|
qemu_opt_set(opts, "type", device);
|
|
|
|
if (net_client_init(mon, opts, 0) < 0) {
|
|
monitor_printf(mon, "adding host network device %s failed\n", device);
|
|
}
|
|
}
|
|
|
|
void net_host_device_remove(Monitor *mon, const QDict *qdict)
|
|
{
|
|
VLANClientState *vc;
|
|
int vlan_id = qdict_get_int(qdict, "vlan_id");
|
|
const char *device = qdict_get_str(qdict, "device");
|
|
|
|
vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
|
|
if (!vc) {
|
|
return;
|
|
}
|
|
if (!net_host_check_device(vc->model)) {
|
|
monitor_printf(mon, "invalid host network device %s\n", device);
|
|
return;
|
|
}
|
|
qemu_del_vlan_client(vc);
|
|
}
|
|
|
|
void net_set_boot_mask(int net_boot_mask)
|
|
{
|
|
int i;
|
|
|
|
/* Only the first four NICs may be bootable */
|
|
net_boot_mask = net_boot_mask & 0xF;
|
|
|
|
for (i = 0; i < nb_nics; i++) {
|
|
if (net_boot_mask & (1 << i)) {
|
|
nd_table[i].bootable = 1;
|
|
net_boot_mask &= ~(1 << i);
|
|
}
|
|
}
|
|
|
|
if (net_boot_mask) {
|
|
fprintf(stderr, "Cannot boot from non-existent NIC\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
void do_info_network(Monitor *mon)
|
|
{
|
|
VLANState *vlan;
|
|
|
|
QTAILQ_FOREACH(vlan, &vlans, next) {
|
|
VLANClientState *vc;
|
|
|
|
monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
|
|
|
|
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
|
monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
|
|
}
|
|
}
|
|
}
|
|
|
|
void do_set_link(Monitor *mon, const QDict *qdict)
|
|
{
|
|
VLANState *vlan;
|
|
VLANClientState *vc = NULL;
|
|
const char *name = qdict_get_str(qdict, "name");
|
|
const char *up_or_down = qdict_get_str(qdict, "up_or_down");
|
|
|
|
QTAILQ_FOREACH(vlan, &vlans, next) {
|
|
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
|
if (strcmp(vc->name, name) == 0) {
|
|
goto done;
|
|
}
|
|
}
|
|
}
|
|
done:
|
|
|
|
if (!vc) {
|
|
monitor_printf(mon, "could not find network device '%s'\n", name);
|
|
return;
|
|
}
|
|
|
|
if (strcmp(up_or_down, "up") == 0)
|
|
vc->link_down = 0;
|
|
else if (strcmp(up_or_down, "down") == 0)
|
|
vc->link_down = 1;
|
|
else
|
|
monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
|
|
"valid\n", up_or_down);
|
|
|
|
if (vc->link_status_changed)
|
|
vc->link_status_changed(vc);
|
|
}
|
|
|
|
void net_cleanup(void)
|
|
{
|
|
VLANState *vlan;
|
|
VLANClientState *vc, *next_vc;
|
|
|
|
QTAILQ_FOREACH(vlan, &vlans, next) {
|
|
QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
|
|
qemu_del_vlan_client(vc);
|
|
}
|
|
}
|
|
|
|
QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
|
|
qemu_del_vlan_client(vc);
|
|
}
|
|
}
|
|
|
|
static void net_check_clients(void)
|
|
{
|
|
VLANState *vlan;
|
|
|
|
QTAILQ_FOREACH(vlan, &vlans, 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);
|
|
}
|
|
}
|
|
|
|
static int net_init_client(QemuOpts *opts, void *dummy)
|
|
{
|
|
if (net_client_init(NULL, opts, 0) < 0)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
static int net_init_netdev(QemuOpts *opts, void *dummy)
|
|
{
|
|
return net_client_init(NULL, opts, 1);
|
|
}
|
|
|
|
int net_init_clients(void)
|
|
{
|
|
if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
|
|
/* if no clients, we use a default config */
|
|
qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
|
|
#ifdef CONFIG_SLIRP
|
|
qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
|
|
#endif
|
|
}
|
|
|
|
QTAILQ_INIT(&vlans);
|
|
QTAILQ_INIT(&non_vlan_clients);
|
|
|
|
if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1)
|
|
return -1;
|
|
|
|
if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
|
|
return -1;
|
|
}
|
|
|
|
net_check_clients();
|
|
|
|
return 0;
|
|
}
|
|
|
|
int net_client_parse(QemuOptsList *opts_list, const char *optarg)
|
|
{
|
|
#if defined(CONFIG_SLIRP)
|
|
/* handle legacy -net channel,port:chr */
|
|
if (!strcmp(opts_list->name, "net") &&
|
|
!strncmp(optarg, "channel,", strlen("channel,"))) {
|
|
int ret;
|
|
|
|
optarg += strlen("channel,");
|
|
|
|
if (QTAILQ_EMPTY(&slirp_stacks)) {
|
|
struct slirp_config_str *config;
|
|
|
|
config = qemu_malloc(sizeof(*config));
|
|
pstrcpy(config->str, sizeof(config->str), optarg);
|
|
config->flags = SLIRP_CFG_LEGACY;
|
|
config->next = slirp_configs;
|
|
slirp_configs = config;
|
|
ret = 0;
|
|
} else {
|
|
ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
if (!qemu_opts_parse(opts_list, optarg, "type")) {
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|