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83174765da
We used to release it right after migrate_fd_connect(). That's not good enough when there're more than one socket pair required, because it'll be needed to establish TLS connection for the rest channels. One example is multifd, where we copied over the hostname for each channel but that's actually not needed. Keeping the hostname until the cleanup phase of migration. Cc: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20220331150857.74406-2-peterx@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> dgilbert: Fixup checkpatch error; don't need to check for NULL around g_free
101 lines
2.8 KiB
C
101 lines
2.8 KiB
C
/*
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* QEMU live migration channel operations
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*
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* Copyright Red Hat, Inc. 2016
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*
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* Authors:
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* Daniel P. Berrange <berrange@redhat.com>
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*
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* Contributions after 2012-01-13 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*/
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#include "qemu/osdep.h"
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#include "channel.h"
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#include "tls.h"
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#include "migration.h"
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#include "qemu-file-channel.h"
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#include "trace.h"
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#include "qapi/error.h"
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#include "io/channel-tls.h"
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#include "io/channel-socket.h"
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#include "qemu/yank.h"
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#include "yank_functions.h"
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/**
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* @migration_channel_process_incoming - Create new incoming migration channel
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*
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* Notice that TLS is special. For it we listen in a listener socket,
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* and then create a new client socket from the TLS library.
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*
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* @ioc: Channel to which we are connecting
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*/
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void migration_channel_process_incoming(QIOChannel *ioc)
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{
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MigrationState *s = migrate_get_current();
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Error *local_err = NULL;
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trace_migration_set_incoming_channel(
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ioc, object_get_typename(OBJECT(ioc)));
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if (s->parameters.tls_creds &&
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*s->parameters.tls_creds &&
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!object_dynamic_cast(OBJECT(ioc),
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TYPE_QIO_CHANNEL_TLS)) {
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migration_tls_channel_process_incoming(s, ioc, &local_err);
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} else {
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migration_ioc_register_yank(ioc);
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migration_ioc_process_incoming(ioc, &local_err);
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}
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if (local_err) {
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error_report_err(local_err);
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}
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}
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/**
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* @migration_channel_connect - Create new outgoing migration channel
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*
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* @s: Current migration state
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* @ioc: Channel to which we are connecting
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* @hostname: Where we want to connect
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* @error: Error indicating failure to connect, free'd here
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*/
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void migration_channel_connect(MigrationState *s,
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QIOChannel *ioc,
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const char *hostname,
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Error *error)
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{
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trace_migration_set_outgoing_channel(
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ioc, object_get_typename(OBJECT(ioc)), hostname, error);
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if (!error) {
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if (s->parameters.tls_creds &&
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*s->parameters.tls_creds &&
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!object_dynamic_cast(OBJECT(ioc),
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TYPE_QIO_CHANNEL_TLS)) {
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migration_tls_channel_connect(s, ioc, hostname, &error);
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if (!error) {
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/* tls_channel_connect will call back to this
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* function after the TLS handshake,
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* so we mustn't call migrate_fd_connect until then
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*/
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return;
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}
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} else {
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QEMUFile *f = qemu_fopen_channel_output(ioc);
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migration_ioc_register_yank(ioc);
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qemu_mutex_lock(&s->qemu_file_lock);
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s->to_dst_file = f;
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qemu_mutex_unlock(&s->qemu_file_lock);
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}
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}
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migrate_fd_connect(s, error);
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error_free(error);
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}
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