mirror of
https://github.com/xemu-project/xemu.git
synced 2024-12-05 10:16:50 +00:00
6666c96aac
Nothing uses it outside of migration.h Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Laurent Vivier <lvivier@redhat.com>
198 lines
5.5 KiB
C
198 lines
5.5 KiB
C
/*
|
|
* QEMU live migration via socket
|
|
*
|
|
* Copyright Red Hat, Inc. 2009-2016
|
|
*
|
|
* Authors:
|
|
* Chris Lalancette <clalance@redhat.com>
|
|
* Daniel P. Berrange <berrange@redhat.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
* the COPYING file in the top-level directory.
|
|
*
|
|
* Contributions after 2012-01-13 are licensed under the terms of the
|
|
* GNU GPL, version 2 or (at your option) any later version.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
|
|
#include "qemu-common.h"
|
|
#include "qemu/error-report.h"
|
|
#include "qapi/error.h"
|
|
#include "channel.h"
|
|
#include "socket.h"
|
|
#include "migration.h"
|
|
#include "qemu-file.h"
|
|
#include "io/channel-socket.h"
|
|
#include "trace.h"
|
|
|
|
|
|
static SocketAddress *tcp_build_address(const char *host_port, Error **errp)
|
|
{
|
|
SocketAddress *saddr;
|
|
|
|
saddr = g_new0(SocketAddress, 1);
|
|
saddr->type = SOCKET_ADDRESS_TYPE_INET;
|
|
|
|
if (inet_parse(&saddr->u.inet, host_port, errp)) {
|
|
qapi_free_SocketAddress(saddr);
|
|
return NULL;
|
|
}
|
|
|
|
return saddr;
|
|
}
|
|
|
|
|
|
static SocketAddress *unix_build_address(const char *path)
|
|
{
|
|
SocketAddress *saddr;
|
|
|
|
saddr = g_new0(SocketAddress, 1);
|
|
saddr->type = SOCKET_ADDRESS_TYPE_UNIX;
|
|
saddr->u.q_unix.path = g_strdup(path);
|
|
|
|
return saddr;
|
|
}
|
|
|
|
|
|
struct SocketConnectData {
|
|
MigrationState *s;
|
|
char *hostname;
|
|
};
|
|
|
|
static void socket_connect_data_free(void *opaque)
|
|
{
|
|
struct SocketConnectData *data = opaque;
|
|
if (!data) {
|
|
return;
|
|
}
|
|
g_free(data->hostname);
|
|
g_free(data);
|
|
}
|
|
|
|
static void socket_outgoing_migration(QIOTask *task,
|
|
gpointer opaque)
|
|
{
|
|
struct SocketConnectData *data = opaque;
|
|
QIOChannel *sioc = QIO_CHANNEL(qio_task_get_source(task));
|
|
Error *err = NULL;
|
|
|
|
if (qio_task_propagate_error(task, &err)) {
|
|
trace_migration_socket_outgoing_error(error_get_pretty(err));
|
|
migrate_fd_error(data->s, err);
|
|
error_free(err);
|
|
} else {
|
|
trace_migration_socket_outgoing_connected(data->hostname);
|
|
migration_channel_connect(data->s, sioc, data->hostname);
|
|
}
|
|
object_unref(OBJECT(sioc));
|
|
}
|
|
|
|
static void socket_start_outgoing_migration(MigrationState *s,
|
|
SocketAddress *saddr,
|
|
Error **errp)
|
|
{
|
|
QIOChannelSocket *sioc = qio_channel_socket_new();
|
|
struct SocketConnectData *data = g_new0(struct SocketConnectData, 1);
|
|
|
|
data->s = s;
|
|
if (saddr->type == SOCKET_ADDRESS_TYPE_INET) {
|
|
data->hostname = g_strdup(saddr->u.inet.host);
|
|
}
|
|
|
|
qio_channel_set_name(QIO_CHANNEL(sioc), "migration-socket-outgoing");
|
|
qio_channel_socket_connect_async(sioc,
|
|
saddr,
|
|
socket_outgoing_migration,
|
|
data,
|
|
socket_connect_data_free);
|
|
qapi_free_SocketAddress(saddr);
|
|
}
|
|
|
|
void tcp_start_outgoing_migration(MigrationState *s,
|
|
const char *host_port,
|
|
Error **errp)
|
|
{
|
|
Error *err = NULL;
|
|
SocketAddress *saddr = tcp_build_address(host_port, &err);
|
|
if (!err) {
|
|
socket_start_outgoing_migration(s, saddr, &err);
|
|
}
|
|
error_propagate(errp, err);
|
|
}
|
|
|
|
void unix_start_outgoing_migration(MigrationState *s,
|
|
const char *path,
|
|
Error **errp)
|
|
{
|
|
SocketAddress *saddr = unix_build_address(path);
|
|
socket_start_outgoing_migration(s, saddr, errp);
|
|
}
|
|
|
|
|
|
static gboolean socket_accept_incoming_migration(QIOChannel *ioc,
|
|
GIOCondition condition,
|
|
gpointer opaque)
|
|
{
|
|
QIOChannelSocket *sioc;
|
|
Error *err = NULL;
|
|
|
|
sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(ioc),
|
|
&err);
|
|
if (!sioc) {
|
|
error_report("could not accept migration connection (%s)",
|
|
error_get_pretty(err));
|
|
goto out;
|
|
}
|
|
|
|
trace_migration_socket_incoming_accepted();
|
|
|
|
qio_channel_set_name(QIO_CHANNEL(sioc), "migration-socket-incoming");
|
|
migration_channel_process_incoming(QIO_CHANNEL(sioc));
|
|
object_unref(OBJECT(sioc));
|
|
|
|
out:
|
|
/* Close listening socket as its no longer needed */
|
|
qio_channel_close(ioc, NULL);
|
|
return FALSE; /* unregister */
|
|
}
|
|
|
|
|
|
static void socket_start_incoming_migration(SocketAddress *saddr,
|
|
Error **errp)
|
|
{
|
|
QIOChannelSocket *listen_ioc = qio_channel_socket_new();
|
|
|
|
qio_channel_set_name(QIO_CHANNEL(listen_ioc),
|
|
"migration-socket-listener");
|
|
|
|
if (qio_channel_socket_listen_sync(listen_ioc, saddr, errp) < 0) {
|
|
object_unref(OBJECT(listen_ioc));
|
|
qapi_free_SocketAddress(saddr);
|
|
return;
|
|
}
|
|
|
|
qio_channel_add_watch(QIO_CHANNEL(listen_ioc),
|
|
G_IO_IN,
|
|
socket_accept_incoming_migration,
|
|
listen_ioc,
|
|
(GDestroyNotify)object_unref);
|
|
qapi_free_SocketAddress(saddr);
|
|
}
|
|
|
|
void tcp_start_incoming_migration(const char *host_port, Error **errp)
|
|
{
|
|
Error *err = NULL;
|
|
SocketAddress *saddr = tcp_build_address(host_port, &err);
|
|
if (!err) {
|
|
socket_start_incoming_migration(saddr, &err);
|
|
}
|
|
error_propagate(errp, err);
|
|
}
|
|
|
|
void unix_start_incoming_migration(const char *path, Error **errp)
|
|
{
|
|
SocketAddress *saddr = unix_build_address(path);
|
|
socket_start_incoming_migration(saddr, errp);
|
|
}
|