migration/options.h

   1 /*
   2  * QEMU migration capabilities
   3  *
   4  * Copyright (c) 2012-2023 Red Hat Inc
   5  *
   6  * Authors:
   7  *   Orit Wasserman <owasserm@redhat.com>
   8  *   Juan Quintela <quintela@redhat.com>
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  11  * See the COPYING file in the top-level directory.
  12  */
  13
  14 #ifndef QEMU_MIGRATION_OPTIONS_H
  15 #define QEMU_MIGRATION_OPTIONS_H
  16
  17 /* constants */
  18
  19 /* Amount of time to allocate to each "chunk" of bandwidth-throttled
  20  * data. */
  21 #define BUFFER_DELAY     100
  22 #define XFER_LIMIT_RATIO (1000 / BUFFER_DELAY)
  23
  24 /* capabilities */
  25
  26 bool migrate_auto_converge(void);
  27 bool migrate_background_snapshot(void);
  28 bool migrate_block(void);
  29 bool migrate_colo(void);
  30 bool migrate_compress(void);
  31 bool migrate_dirty_bitmaps(void);
  32 bool migrate_events(void);
  33 bool migrate_ignore_shared(void);
  34 bool migrate_late_block_activate(void);
  35 bool migrate_multifd(void);
  36 bool migrate_pause_before_switchover(void);
  37 bool migrate_postcopy_blocktime(void);
  38 bool migrate_postcopy_preempt(void);
  39 bool migrate_postcopy_ram(void);
  40 bool migrate_rdma_pin_all(void);
  41 bool migrate_release_ram(void);
  42 bool migrate_return_path(void);
  43 bool migrate_validate_uuid(void);
  44 bool migrate_xbzrle(void);
  45 bool migrate_zero_blocks(void);
  46 bool migrate_zero_copy_send(void);
  47
  48 /*
  49  * pseudo capabilities
  50  *
  51  * These are functions that are used in a similar way to capabilities
  52  * check, but they are not a capability.
  53  */
  54
  55 bool migrate_postcopy(void);
  56 bool migrate_tls(void);
  57
  58 /* capabilities helpers */
  59
  60 bool migrate_caps_check(bool *old_caps, bool *new_caps, Error **errp);
  61 bool migrate_cap_set(int cap, bool value, Error **errp);
  62
  63 /* parameters */
  64
  65 bool migrate_block_incremental(void);
  66 uint32_t migrate_checkpoint_delay(void);
  67 int migrate_compress_level(void);
  68 int migrate_compress_threads(void);
  69 int migrate_compress_wait_thread(void);
  70 uint8_t migrate_cpu_throttle_increment(void);
  71 uint8_t migrate_cpu_throttle_initial(void);
  72 bool migrate_cpu_throttle_tailslow(void);
  73 int migrate_decompress_threads(void);
  74 uint64_t migrate_downtime_limit(void);
  75 uint8_t migrate_max_cpu_throttle(void);
  76 uint64_t migrate_max_bandwidth(void);
  77 int64_t migrate_max_postcopy_bandwidth(void);
  78 int migrate_multifd_channels(void);
  79 MultiFDCompression migrate_multifd_compression(void);
  80 int migrate_multifd_zlib_level(void);
  81 int migrate_multifd_zstd_level(void);
  82 uint8_t migrate_throttle_trigger_threshold(void);
  83 uint64_t migrate_xbzrle_cache_size(void);
  84
  85 /* parameters setters */
  86
  87 void migrate_set_block_incremental(bool value);
  88
  89 /* parameters helpers */
  90
  91 bool migrate_params_check(MigrationParameters *params, Error **errp);
  92 void migrate_params_init(MigrationParameters *params);
  93 void block_cleanup_parameters(MigrationState *s);
  94
  95 #endif