migration/channel.c

   1 /*
   2  * QEMU live migration channel operations
   3  *
   4  * Copyright Red Hat, Inc. 2016
   5  *
   6  * Authors:
   7  *  Daniel P. Berrange <berrange@redhat.com>
   8  *
   9  * Contributions after 2012-01-13 are licensed under the terms of the
  10  * GNU GPL, version 2 or (at your option) any later version.
  11  */
  12
  13 #include "qemu/osdep.h"
  14 #include "channel.h"
  15 #include "migration/migration.h"
  16 #include "qemu-file-channel.h"
  17 #include "trace.h"
  18 #include "qapi/error.h"
  19 #include "io/channel-tls.h"
  20
  21 void migration_channel_process_incoming(MigrationState *s,
  22                                         QIOChannel *ioc)
  23 {
  24     trace_migration_set_incoming_channel(
  25         ioc, object_get_typename(OBJECT(ioc)));
  26
  27     if (s->parameters.tls_creds &&
  28         *s->parameters.tls_creds &&
  29         !object_dynamic_cast(OBJECT(ioc),
  30                              TYPE_QIO_CHANNEL_TLS)) {
  31         Error *local_err = NULL;
  32         migration_tls_channel_process_incoming(s, ioc, &local_err);
  33         if (local_err) {
  34             error_report_err(local_err);
  35         }
  36     } else {
  37         QEMUFile *f = qemu_fopen_channel_input(ioc);
  38         migration_fd_process_incoming(f);
  39     }
  40 }
  41
  42
  43 void migration_channel_connect(MigrationState *s,
  44                                QIOChannel *ioc,
  45                                const char *hostname)
  46 {
  47     trace_migration_set_outgoing_channel(
  48         ioc, object_get_typename(OBJECT(ioc)), hostname);
  49
  50     if (s->parameters.tls_creds &&
  51         *s->parameters.tls_creds &&
  52         !object_dynamic_cast(OBJECT(ioc),
  53                              TYPE_QIO_CHANNEL_TLS)) {
  54         Error *local_err = NULL;
  55         migration_tls_channel_connect(s, ioc, hostname, &local_err);
  56         if (local_err) {
  57             migrate_fd_error(s, local_err);
  58             error_free(local_err);
  59         }
  60     } else {
  61         QEMUFile *f = qemu_fopen_channel_output(ioc);
  62
  63         s->to_dst_file = f;
  64
  65         migrate_fd_connect(s);
  66     }
  67 }