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initial user mode network support 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@730 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-04-21 23:27:19 +00:00
parent 92cb7d5423
commit c20709aa32
3 changed files with 279 additions and 97 deletions
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7
configure vendored
View File

@ -71,6 +71,7 @@ bigendian="no"
mingw32="no"
EXESUF=""
gdbstub="yes"
slirp="no"
# OS specific
targetos=`uname -s`
@ -124,6 +125,8 @@ for opt do
;;
--enable-mingw32) mingw32="yes" ; cross_prefix="i386-mingw32-"
;;
--enable-slirp) slirp="yes"
;;
esac
done
@ -378,6 +381,10 @@ if test "$sdl" = "yes" ; then
fi
echo "" >> $config_mak
fi
if test "$slirp" = "yes" ; then
echo "CONFIG_SLIRP=yes" >> $config_mak
echo "#define CONFIG_SLIRP 1" >> $config_h
fi
echo -n "VERSION=" >>$config_mak
head $source_path/VERSION >>$config_mak
echo "" >>$config_mak

328
vl.c
View File

@ -45,6 +45,10 @@
#include <linux/if_tun.h>
#endif
#if defined(CONFIG_SLIRP)
#include "libslirp.h"
#endif
#ifdef _WIN32
#include <sys/timeb.h>
#include <windows.h>
@ -750,20 +754,121 @@ int serial_open_device(void)
#endif
/***********************************************************/
/* Linux network device redirector */
/* Linux network device redirectors */
#ifdef _WIN32
static int net_init(void)
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");
}
}
void qemu_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
{
nd->send_packet(nd, buf, size);
}
void qemu_add_read_packet(NetDriverState *nd, IOCanRWHandler *fd_can_read,
IOReadHandler *fd_read, void *opaque)
{
nd->add_read_packet(nd, fd_can_read, fd_read, opaque);
}
/* dummy network adapter */
static void dummy_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
{
}
static void dummy_add_read_packet(NetDriverState *nd,
IOCanRWHandler *fd_can_read,
IOReadHandler *fd_read, void *opaque)
{
}
static int net_dummy_init(NetDriverState *nd)
{
nd->send_packet = dummy_send_packet;
nd->add_read_packet = dummy_add_read_packet;
pstrcpy(nd->ifname, sizeof(nd->ifname), "dummy");
return 0;
}
void net_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
#if defined(CONFIG_SLIRP)
/* slirp network adapter */
static void *slirp_fd_opaque;
static IOCanRWHandler *slirp_fd_can_read;
static IOReadHandler *slirp_fd_read;
static int slirp_inited;
int slirp_can_output(void)
{
return slirp_fd_can_read(slirp_fd_opaque);
}
#else
void slirp_output(const uint8_t *pkt, int pkt_len)
{
#if 0
printf("output:\n");
hex_dump(stdout, pkt, pkt_len);
#endif
slirp_fd_read(slirp_fd_opaque, pkt, pkt_len);
}
static void slirp_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
{
#if 0
printf("input:\n");
hex_dump(stdout, buf, size);
#endif
slirp_input(buf, size);
}
static void slirp_add_read_packet(NetDriverState *nd,
IOCanRWHandler *fd_can_read,
IOReadHandler *fd_read, void *opaque)
{
slirp_fd_opaque = opaque;
slirp_fd_can_read = fd_can_read;
slirp_fd_read = fd_read;
}
static int net_slirp_init(NetDriverState *nd)
{
if (!slirp_inited) {
slirp_inited = 1;
slirp_init();
}
nd->send_packet = slirp_send_packet;
nd->add_read_packet = slirp_add_read_packet;
pstrcpy(nd->ifname, sizeof(nd->ifname), "slirp");
return 0;
}
#endif /* CONFIG_SLIRP */
#if !defined(_WIN32)
static int tun_open(char *ifname, int ifname_size)
{
@ -790,60 +895,61 @@ static int tun_open(char *ifname, int ifname_size)
return fd;
}
static int net_init(void)
static void tun_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
{
int pid, status, launch_script, i;
NetDriverState *nd;
char *args[MAX_NICS + 2];
char **parg;
launch_script = 0;
for(i = 0; i < nb_nics; i++) {
nd = &nd_table[i];
if (nd->fd < 0) {
nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
if (nd->fd >= 0)
launch_script = 1;
}
}
if (launch_script) {
/* try to launch network init script */
pid = fork();
if (pid >= 0) {
if (pid == 0) {
parg = args;
*parg++ = network_script;
for(i = 0; i < nb_nics; i++) {
nd = &nd_table[i];
if (nd->fd >= 0) {
*parg++ = nd->ifname;
}
}
*parg++ = NULL;
execv(network_script, args);
exit(1);
}
while (waitpid(pid, &status, 0) != pid);
if (!WIFEXITED(status) ||
WEXITSTATUS(status) != 0) {
fprintf(stderr, "%s: could not launch network script\n",
network_script);
}
}
}
return 0;
}
void net_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
{
#ifdef DEBUG_NE2000
printf("NE2000: sending packet size=%d\n", size);
#endif
write(nd->fd, buf, size);
}
#endif
static void tun_add_read_packet(NetDriverState *nd,
IOCanRWHandler *fd_can_read,
IOReadHandler *fd_read, void *opaque)
{
qemu_add_fd_read_handler(nd->fd, fd_can_read, fd_read, opaque);
}
static int net_tun_init(NetDriverState *nd)
{
int pid, status;
char *args[3];
char **parg;
nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
if (nd->fd < 0)
return -1;
/* try to launch network init script */
pid = fork();
if (pid >= 0) {
if (pid == 0) {
parg = args;
*parg++ = network_script;
*parg++ = nd->ifname;
*parg++ = NULL;
execv(network_script, args);
exit(1);
}
while (waitpid(pid, &status, 0) != pid);
if (!WIFEXITED(status) ||
WEXITSTATUS(status) != 0) {
fprintf(stderr, "%s: could not launch network script\n",
network_script);
}
}
nd->send_packet = tun_send_packet;
nd->add_read_packet = tun_add_read_packet;
return 0;
}
static int net_fd_init(NetDriverState *nd, int fd)
{
nd->fd = fd;
nd->send_packet = tun_send_packet;
nd->add_read_packet = tun_add_read_packet;
pstrcpy(nd->ifname, sizeof(nd->ifname), "tunfd");
return 0;
}
#endif /* !_WIN32 */
/***********************************************************/
/* dumb display */
@ -1597,6 +1703,28 @@ int main_loop(void)
}
}
}
#if defined(CONFIG_SLIRP)
/* XXX: merge with poll() */
if (slirp_inited) {
fd_set rfds, wfds, xfds;
int nfds;
struct timeval tv;
nfds = -1;
FD_ZERO(&rfds);
FD_ZERO(&wfds);
FD_ZERO(&xfds);
slirp_select_fill(&nfds, &rfds, &wfds, &xfds);
tv.tv_sec = 0;
tv.tv_usec = 0;
ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv);
if (ret >= 0) {
slirp_select_poll(&rfds, &wfds, &xfds);
}
}
#endif
#endif
if (vm_running) {
@ -1636,10 +1764,14 @@ void help(void)
"-nographic disable graphical output and redirect serial I/Os to console\n"
"\n"
"Network options:\n"
"-n script set network init script [default=%s]\n"
"-nics n simulate 'n' network interfaces [default=1]\n"
"-nics n simulate 'n' network cards [default=1]\n"
"-macaddr addr set the mac address of the first interface\n"
"-tun-fd fd0[,...] use these fds as already opened tap/tun interfaces\n"
"-n script set tap/tun network init script [default=%s]\n"
"-tun-fd fd use this fd as already opened tap/tun interface\n"
#ifdef CONFIG_SLIRP
"-user-net use user mode network stack [default if no tap/tun script]\n"
#endif
"-dummy-net use dummy network stack\n"
"\n"
"Linux boot specific:\n"
"-kernel bzImage use 'bzImage' as kernel image\n"
@ -1695,6 +1827,8 @@ struct option long_options[] = {
{ "no-code-copy", 0, NULL, 0 },
{ "nics", 1, NULL, 0 },
{ "macaddr", 1, NULL, 0 },
{ "user-net", 1, NULL, 0 },
{ "dummy-net", 1, NULL, 0 },
{ NULL, 0, NULL, 0 },
};
@ -1707,6 +1841,10 @@ static uint8_t *signal_stack;
#endif
#define NET_IF_TUN 0
#define NET_IF_USER 1
#define NET_IF_DUMMY 2
int main(int argc, char **argv)
{
#ifdef CONFIG_GDBSTUB
@ -1722,7 +1860,8 @@ int main(int argc, char **argv)
int cyls, heads, secs;
int start_emulation = 1;
uint8_t macaddr[6];
int net_if_type, nb_tun_fds, tun_fds[MAX_NICS];
#if !defined(CONFIG_SOFTMMU)
/* we never want that malloc() uses mmap() */
mallopt(M_MMAP_THRESHOLD, 4096 * 1024);
@ -1746,6 +1885,8 @@ int main(int argc, char **argv)
has_cdrom = 1;
cyls = heads = secs = 0;
nb_tun_fds = 0;
net_if_type = -1;
nb_nics = 1;
/* default mac address of the first network interface */
macaddr[0] = 0x52;
@ -1754,10 +1895,8 @@ int main(int argc, char **argv)
macaddr[3] = 0x12;
macaddr[4] = 0x34;
macaddr[5] = 0x56;
for(i = 0; i < MAX_NICS; i++)
nd_table[i].fd = -1;
for(;;) {
c = getopt_long_only(argc, argv, "hm:d:n:sp:L:S", long_options, &long_index);
if (c == -1)
@ -1809,23 +1948,13 @@ int main(int argc, char **argv)
{
const char *p;
int fd;
p = optarg;
nb_nics = 0;
for(;;) {
fd = strtol(p, (char **)&p, 0);
nd_table[nb_nics].fd = fd;
snprintf(nd_table[nb_nics].ifname,
sizeof(nd_table[nb_nics].ifname),
"fd%d", nb_nics);
nb_nics++;
if (*p == ',') {
p++;
} else if (*p != '\0') {
fprintf(stderr, "qemu: invalid fd for network interface %d\n", nb_nics);
if (nb_tun_fds < MAX_NICS) {
fd = strtol(optarg, (char **)&p, 0);
if (*p != '\0') {
fprintf(stderr, "qemu: invalid fd for network interface %d\n", nb_tun_fds);
exit(1);
} else {
break;
}
tun_fds[nb_tun_fds++] = fd;
}
}
break;
@ -1885,6 +2014,12 @@ int main(int argc, char **argv)
}
}
break;
case 18:
net_if_type = NET_IF_USER;
break;
case 19:
net_if_type = NET_IF_DUMMY;
break;
}
break;
case 'h':
@ -1965,8 +2100,18 @@ int main(int argc, char **argv)
#endif
/* init host network redirectors */
for(i = 0; i < MAX_NICS; i++) {
if (net_if_type == -1) {
net_if_type = NET_IF_TUN;
#if defined(CONFIG_SLIRP)
if (access(network_script, R_OK) < 0) {
net_if_type = NET_IF_USER;
}
#endif
}
for(i = 0; i < nb_nics; i++) {
NetDriverState *nd = &nd_table[i];
nd->index = i;
/* init virtual mac address */
nd->macaddr[0] = macaddr[0];
nd->macaddr[1] = macaddr[1];
@ -1974,8 +2119,27 @@ int main(int argc, char **argv)
nd->macaddr[3] = macaddr[3];
nd->macaddr[4] = macaddr[4];
nd->macaddr[5] = macaddr[5] + i;
switch(net_if_type) {
#if defined(CONFIG_SLIRP)
case NET_IF_USER:
net_slirp_init(nd);
break;
#endif
#if !defined(_WIN32)
case NET_IF_TUN:
if (i < nb_tun_fds) {
net_fd_init(nd, tun_fds[i]);
} else {
net_tun_init(nd);
}
break;
#endif
case NET_IF_DUMMY:
default:
net_dummy_init(nd);
break;
}
}
net_init();
/* init the memory */
phys_ram_size = ram_size + vga_ram_size;
@ -2058,7 +2222,7 @@ int main(int argc, char **argv)
}
if (fd_filename[i] != '\0') {
if (bdrv_open(fd_table[i], fd_filename[i], snapshot) < 0) {
fprintf(stderr, "qemu: could not open floppy disk image '%s\n",
fprintf(stderr, "qemu: could not open floppy disk image '%s'\n",
fd_filename[i]);
exit(1);
}

41
vl.h
View File

@ -132,21 +132,6 @@ void qemu_del_vm_stop_handler(VMStopHandler *cb, void *opaque);
void vm_start(void);
void vm_stop(int reason);
/* network redirectors support */
#define MAX_NICS 8
typedef struct NetDriverState {
int fd;
uint8_t macaddr[6];
char ifname[16];
} NetDriverState;
extern int nb_nics;
extern NetDriverState nd_table[MAX_NICS];
void net_send_packet(NetDriverState *nd, const uint8_t *buf, int size);
/* async I/O support */
typedef void IOReadHandler(void *opaque, const uint8_t *buf, int size);
@ -156,6 +141,31 @@ int qemu_add_fd_read_handler(int fd, IOCanRWHandler *fd_can_read,
IOReadHandler *fd_read, void *opaque);
void qemu_del_fd_read_handler(int fd);
/* network redirectors support */
#define MAX_NICS 8
typedef struct NetDriverState {
int index; /* index number in QEMU */
uint8_t macaddr[6];
char ifname[16];
void (*send_packet)(struct NetDriverState *nd,
const uint8_t *buf, int size);
void (*add_read_packet)(struct NetDriverState *nd,
IOCanRWHandler *fd_can_read,
IOReadHandler *fd_read, void *opaque);
/* tun specific data */
int fd;
/* slirp specific data */
} NetDriverState;
extern int nb_nics;
extern NetDriverState nd_table[MAX_NICS];
void qemu_send_packet(NetDriverState *nd, const uint8_t *buf, int size);
void qemu_add_read_packet(NetDriverState *nd, IOCanRWHandler *fd_can_read,
IOReadHandler *fd_read, void *opaque);
/* timers */
typedef struct QEMUClock QEMUClock;
@ -417,6 +427,7 @@ void serial_receive_break(SerialState *s);
void pic_set_irq(int irq, int level);
void pic_init(void);
uint32_t pic_intack_read(CPUState *env);
void pic_info(void);
/* i8254.c */