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