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 "tls.h"
  16 #include "migration.h"
  17 #include "qemu-file-channel.h"
  18 #include "trace.h"
  19 #include "qapi/error.h"
  20 #include "io/channel-tls.h"
  21
  22 void migration_channel_process_incoming(QIOChannel *ioc)
  23 {
  24     MigrationState *s = migrate_get_current();
  25
  26     trace_migration_set_incoming_channel(
  27         ioc, object_get_typename(OBJECT(ioc)));
  28
  29     if (s->parameters.tls_creds &&
  30         *s->parameters.tls_creds &&
  31         !object_dynamic_cast(OBJECT(ioc),
  32                              TYPE_QIO_CHANNEL_TLS)) {
  33         Error *local_err = NULL;
  34         migration_tls_channel_process_incoming(s, ioc, &local_err);
  35         if (local_err) {
  36             error_report_err(local_err);
  37         }
  38     } else {
  39         QEMUFile *f = qemu_fopen_channel_input(ioc);
  40         migration_fd_process_incoming(f);
  41     }
  42 }
  43
  44
  45 void migration_channel_connect(MigrationState *s,
  46                                QIOChannel *ioc,
  47                                const char *hostname)
  48 {
  49     trace_migration_set_outgoing_channel(
  50         ioc, object_get_typename(OBJECT(ioc)), hostname);
  51
  52     if (s->parameters.tls_creds &&
  53         *s->parameters.tls_creds &&
  54         !object_dynamic_cast(OBJECT(ioc),
  55                              TYPE_QIO_CHANNEL_TLS)) {
  56         Error *local_err = NULL;
  57         migration_tls_channel_connect(s, ioc, hostname, &local_err);
  58         if (local_err) {
  59             migrate_fd_error(s, local_err);
  60             error_free(local_err);
  61         }
  62     } else {
  63         QEMUFile *f = qemu_fopen_channel_output(ioc);
  64
  65         s->to_dst_file = f;
  66
  67         migrate_fd_connect(s);
  68     }
  69 }