94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/*
|
|
* QEMU live migration channel operations
|
|
*
|
|
* Copyright Red Hat, Inc. 2016
|
|
*
|
|
* Authors:
|
|
* Daniel P. Berrange <berrange@redhat.com>
|
|
*
|
|
* 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 "channel.h"
|
|
#include "tls.h"
|
|
#include "migration.h"
|
|
#include "qemu-file.h"
|
|
#include "trace.h"
|
|
#include "qapi/error.h"
|
|
#include "io/channel-tls.h"
|
|
#include "io/channel-socket.h"
|
|
#include "qemu/yank.h"
|
|
#include "yank_functions.h"
|
|
|
|
/**
|
|
* @migration_channel_process_incoming - Create new incoming migration channel
|
|
*
|
|
* Notice that TLS is special. For it we listen in a listener socket,
|
|
* and then create a new client socket from the TLS library.
|
|
*
|
|
* @ioc: Channel to which we are connecting
|
|
*/
|
|
void migration_channel_process_incoming(QIOChannel *ioc)
|
|
{
|
|
MigrationState *s = migrate_get_current();
|
|
Error *local_err = NULL;
|
|
|
|
trace_migration_set_incoming_channel(
|
|
ioc, object_get_typename(OBJECT(ioc)));
|
|
|
|
if (migrate_channel_requires_tls_upgrade(ioc)) {
|
|
migration_tls_channel_process_incoming(s, ioc, &local_err);
|
|
} else {
|
|
migration_ioc_register_yank(ioc);
|
|
migration_ioc_process_incoming(ioc, &local_err);
|
|
}
|
|
|
|
if (local_err) {
|
|
error_report_err(local_err);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* @migration_channel_connect - Create new outgoing migration channel
|
|
*
|
|
* @s: Current migration state
|
|
* @ioc: Channel to which we are connecting
|
|
* @hostname: Where we want to connect
|
|
* @error: Error indicating failure to connect, free'd here
|
|
*/
|
|
void migration_channel_connect(MigrationState *s,
|
|
QIOChannel *ioc,
|
|
const char *hostname,
|
|
Error *error)
|
|
{
|
|
trace_migration_set_outgoing_channel(
|
|
ioc, object_get_typename(OBJECT(ioc)), hostname, error);
|
|
|
|
if (!error) {
|
|
if (migrate_channel_requires_tls_upgrade(ioc)) {
|
|
migration_tls_channel_connect(s, ioc, hostname, &error);
|
|
|
|
if (!error) {
|
|
/* tls_channel_connect will call back to this
|
|
* function after the TLS handshake,
|
|
* so we mustn't call migrate_fd_connect until then
|
|
*/
|
|
|
|
return;
|
|
}
|
|
} else {
|
|
QEMUFile *f = qemu_file_new_output(ioc);
|
|
|
|
migration_ioc_register_yank(ioc);
|
|
|
|
qemu_mutex_lock(&s->qemu_file_lock);
|
|
s->to_dst_file = f;
|
|
qemu_mutex_unlock(&s->qemu_file_lock);
|
|
}
|
|
}
|
|
migrate_fd_connect(s, error);
|
|
error_free(error);
|
|
}
|