LXR qemu/migration/rdma.h

   1/*
   2 * RDMA protocol and interfaces
   3 *
   4 * Copyright IBM, Corp. 2010-2013
   5 * Copyright Red Hat, Inc. 2015-2016
   6 *
   7 * Authors:
   8 *  Michael R. Hines <mrhines@us.ibm.com>
   9 *  Jiuxing Liu <jl@us.ibm.com>
  10 *  Daniel P. Berrange <berrange@redhat.com>
  11 *
  12 * This work is licensed under the terms of the GNU GPL, version 2 or
  13 * later.  See the COPYING file in the top-level directory.
  14 *
  15 */
  16
  17#include "qemu/sockets.h"
  18
  19#ifndef QEMU_MIGRATION_RDMA_H
  20#define QEMU_MIGRATION_RDMA_H
  21
  22#include "system/memory.h"
  23
  24void rdma_start_outgoing_migration(void *opaque, InetSocketAddress *host_port,
  25                                   Error **errp);
  26
  27void rdma_start_incoming_migration(InetSocketAddress *host_port, Error **errp);
  28
  29/*
  30 * Constants used by rdma return codes
  31 */
  32#define RAM_CONTROL_SETUP     0
  33#define RAM_CONTROL_ROUND     1
  34#define RAM_CONTROL_FINISH    3
  35
  36#define RAM_SAVE_CONTROL_DELAYED  -2000
  37
  38#ifdef CONFIG_RDMA
  39int rdma_registration_handle(QEMUFile *f);
  40int rdma_registration_start(QEMUFile *f, uint64_t flags);
  41int rdma_registration_stop(QEMUFile *f, uint64_t flags);
  42int rdma_block_notification_handle(QEMUFile *f, const char *name);
  43int rdma_control_save_page(QEMUFile *f, ram_addr_t block_offset,
  44                           ram_addr_t offset, size_t size);
  45#else
  46static inline
  47int rdma_registration_handle(QEMUFile *f) { return 0; }
  48static inline
  49int rdma_registration_start(QEMUFile *f, uint64_t flags) { return 0; }
  50static inline
  51int rdma_registration_stop(QEMUFile *f, uint64_t flags) { return 0; }
  52static inline
  53int rdma_block_notification_handle(QEMUFile *f, const char *name) { return 0; }
  54static inline
  55int rdma_control_save_page(QEMUFile *f, ram_addr_t block_offset,
  56                           ram_addr_t offset, size_t size)
  57{
  58    g_assert_not_reached();
  59}
  60#endif
  61#endif
  62