1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
/*
* 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-channel.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 (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET)) {
yank_register_function(MIGRATION_YANK_INSTANCE,
migration_yank_iochannel,
QIO_CHANNEL(ioc));
}
if (s->parameters.tls_creds &&
*s->parameters.tls_creds &&
!object_dynamic_cast(OBJECT(ioc),
TYPE_QIO_CHANNEL_TLS)) {
migration_tls_channel_process_incoming(s, ioc, &local_err);
} else {
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 (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET)) {
yank_register_function(MIGRATION_YANK_INSTANCE,
migration_yank_iochannel,
QIO_CHANNEL(ioc));
}
if (s->parameters.tls_creds &&
*s->parameters.tls_creds &&
!object_dynamic_cast(OBJECT(ioc),
TYPE_QIO_CHANNEL_TLS)) {
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_fopen_channel_output(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);
g_free(s->hostname);
error_free(error);
}
|
