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-rw-r--r--qemu/include/migration/migration.h332
1 files changed, 0 insertions, 332 deletions
diff --git a/qemu/include/migration/migration.h b/qemu/include/migration/migration.h
deleted file mode 100644
index ac2c12c2a..000000000
--- a/qemu/include/migration/migration.h
+++ /dev/null
@@ -1,332 +0,0 @@
-/*
- * QEMU live migration
- *
- * Copyright IBM, Corp. 2008
- *
- * Authors:
- * Anthony Liguori <aliguori@us.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2. See
- * the COPYING file in the top-level directory.
- *
- */
-
-#ifndef QEMU_MIGRATION_H
-#define QEMU_MIGRATION_H
-
-#include "qapi/qmp/qdict.h"
-#include "qemu-common.h"
-#include "qemu/thread.h"
-#include "qemu/notify.h"
-#include "migration/vmstate.h"
-#include "qapi-types.h"
-#include "exec/cpu-common.h"
-
-#define QEMU_VM_FILE_MAGIC 0x5145564d
-#define QEMU_VM_FILE_VERSION_COMPAT 0x00000002
-#define QEMU_VM_FILE_VERSION 0x00000003
-
-#define QEMU_VM_EOF 0x00
-#define QEMU_VM_SECTION_START 0x01
-#define QEMU_VM_SECTION_PART 0x02
-#define QEMU_VM_SECTION_END 0x03
-#define QEMU_VM_SECTION_FULL 0x04
-#define QEMU_VM_SUBSECTION 0x05
-#define QEMU_VM_VMDESCRIPTION 0x06
-#define QEMU_VM_CONFIGURATION 0x07
-#define QEMU_VM_COMMAND 0x08
-#define QEMU_VM_SECTION_FOOTER 0x7e
-
-struct MigrationParams {
- bool blk;
- bool shared;
-};
-
-/* Messages sent on the return path from destination to source */
-enum mig_rp_message_type {
- MIG_RP_MSG_INVALID = 0, /* Must be 0 */
- MIG_RP_MSG_SHUT, /* sibling will not send any more RP messages */
- MIG_RP_MSG_PONG, /* Response to a PING; data (seq: be32 ) */
-
- MIG_RP_MSG_REQ_PAGES_ID, /* data (start: be64, len: be32, id: string) */
- MIG_RP_MSG_REQ_PAGES, /* data (start: be64, len: be32) */
-
- MIG_RP_MSG_MAX
-};
-
-typedef QLIST_HEAD(, LoadStateEntry) LoadStateEntry_Head;
-
-/* The current postcopy state is read/set by postcopy_state_get/set
- * which update it atomically.
- * The state is updated as postcopy messages are received, and
- * in general only one thread should be writing to the state at any one
- * time, initially the main thread and then the listen thread;
- * Corner cases are where either thread finishes early and/or errors.
- * The state is checked as messages are received to ensure that
- * the source is sending us messages in the correct order.
- * The state is also used by the RAM reception code to know if it
- * has to place pages atomically, and the cleanup code at the end of
- * the main thread to know if it has to delay cleanup until the end
- * of postcopy.
- */
-typedef enum {
- POSTCOPY_INCOMING_NONE = 0, /* Initial state - no postcopy */
- POSTCOPY_INCOMING_ADVISE,
- POSTCOPY_INCOMING_DISCARD,
- POSTCOPY_INCOMING_LISTENING,
- POSTCOPY_INCOMING_RUNNING,
- POSTCOPY_INCOMING_END
-} PostcopyState;
-
-/* State for the incoming migration */
-struct MigrationIncomingState {
- QEMUFile *from_src_file;
-
- /*
- * Free at the start of the main state load, set as the main thread finishes
- * loading state.
- */
- QemuEvent main_thread_load_event;
-
- bool have_fault_thread;
- QemuThread fault_thread;
- QemuSemaphore fault_thread_sem;
-
- bool have_listen_thread;
- QemuThread listen_thread;
- QemuSemaphore listen_thread_sem;
-
- /* For the kernel to send us notifications */
- int userfault_fd;
- /* To tell the fault_thread to quit */
- int userfault_quit_fd;
- QEMUFile *to_src_file;
- QemuMutex rp_mutex; /* We send replies from multiple threads */
- void *postcopy_tmp_page;
-
- QEMUBH *bh;
-
- int state;
- /* See savevm.c */
- LoadStateEntry_Head loadvm_handlers;
-};
-
-MigrationIncomingState *migration_incoming_get_current(void);
-MigrationIncomingState *migration_incoming_state_new(QEMUFile *f);
-void migration_incoming_state_destroy(void);
-
-/*
- * An outstanding page request, on the source, having been received
- * and queued
- */
-struct MigrationSrcPageRequest {
- RAMBlock *rb;
- hwaddr offset;
- hwaddr len;
-
- QSIMPLEQ_ENTRY(MigrationSrcPageRequest) next_req;
-};
-
-struct MigrationState
-{
- int64_t bandwidth_limit;
- size_t bytes_xfer;
- size_t xfer_limit;
- QemuThread thread;
- QEMUBH *cleanup_bh;
- QEMUFile *to_dst_file;
- int parameters[MIGRATION_PARAMETER__MAX];
-
- int state;
- MigrationParams params;
-
- /* State related to return path */
- struct {
- QEMUFile *from_dst_file;
- QemuThread rp_thread;
- bool error;
- } rp_state;
-
- double mbps;
- int64_t total_time;
- int64_t downtime;
- int64_t expected_downtime;
- int64_t dirty_pages_rate;
- int64_t dirty_bytes_rate;
- bool enabled_capabilities[MIGRATION_CAPABILITY__MAX];
- int64_t xbzrle_cache_size;
- int64_t setup_time;
- int64_t dirty_sync_count;
-
- /* Flag set once the migration has been asked to enter postcopy */
- bool start_postcopy;
- /* Flag set after postcopy has sent the device state */
- bool postcopy_after_devices;
-
- /* Flag set once the migration thread is running (and needs joining) */
- bool migration_thread_running;
-
- /* Queue of outstanding page requests from the destination */
- QemuMutex src_page_req_mutex;
- QSIMPLEQ_HEAD(src_page_requests, MigrationSrcPageRequest) src_page_requests;
- /* The RAMBlock used in the last src_page_request */
- RAMBlock *last_req_rb;
-};
-
-void migrate_set_state(int *state, int old_state, int new_state);
-
-void process_incoming_migration(QEMUFile *f);
-
-void qemu_start_incoming_migration(const char *uri, Error **errp);
-
-uint64_t migrate_max_downtime(void);
-
-void exec_start_incoming_migration(const char *host_port, Error **errp);
-
-void exec_start_outgoing_migration(MigrationState *s, const char *host_port, Error **errp);
-
-void tcp_start_incoming_migration(const char *host_port, Error **errp);
-
-void tcp_start_outgoing_migration(MigrationState *s, const char *host_port, Error **errp);
-
-void unix_start_incoming_migration(const char *path, Error **errp);
-
-void unix_start_outgoing_migration(MigrationState *s, const char *path, Error **errp);
-
-void fd_start_incoming_migration(const char *path, Error **errp);
-
-void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **errp);
-
-void rdma_start_outgoing_migration(void *opaque, const char *host_port, Error **errp);
-
-void rdma_start_incoming_migration(const char *host_port, Error **errp);
-
-void migrate_fd_error(MigrationState *s);
-
-void migrate_fd_connect(MigrationState *s);
-
-int migrate_fd_close(MigrationState *s);
-
-void add_migration_state_change_notifier(Notifier *notify);
-void remove_migration_state_change_notifier(Notifier *notify);
-MigrationState *migrate_init(const MigrationParams *params);
-bool migration_in_setup(MigrationState *);
-bool migration_has_finished(MigrationState *);
-bool migration_has_failed(MigrationState *);
-/* True if outgoing migration has entered postcopy phase */
-bool migration_in_postcopy(MigrationState *);
-/* ...and after the device transmission */
-bool migration_in_postcopy_after_devices(MigrationState *);
-MigrationState *migrate_get_current(void);
-
-void migrate_compress_threads_create(void);
-void migrate_compress_threads_join(void);
-void migrate_decompress_threads_create(void);
-void migrate_decompress_threads_join(void);
-uint64_t ram_bytes_remaining(void);
-uint64_t ram_bytes_transferred(void);
-uint64_t ram_bytes_total(void);
-void free_xbzrle_decoded_buf(void);
-
-void acct_update_position(QEMUFile *f, size_t size, bool zero);
-
-uint64_t dup_mig_bytes_transferred(void);
-uint64_t dup_mig_pages_transferred(void);
-uint64_t skipped_mig_bytes_transferred(void);
-uint64_t skipped_mig_pages_transferred(void);
-uint64_t norm_mig_bytes_transferred(void);
-uint64_t norm_mig_pages_transferred(void);
-uint64_t xbzrle_mig_bytes_transferred(void);
-uint64_t xbzrle_mig_pages_transferred(void);
-uint64_t xbzrle_mig_pages_overflow(void);
-uint64_t xbzrle_mig_pages_cache_miss(void);
-double xbzrle_mig_cache_miss_rate(void);
-
-void ram_handle_compressed(void *host, uint8_t ch, uint64_t size);
-void ram_debug_dump_bitmap(unsigned long *todump, bool expected);
-/* For outgoing discard bitmap */
-int ram_postcopy_send_discard_bitmap(MigrationState *ms);
-/* For incoming postcopy discard */
-int ram_discard_range(MigrationIncomingState *mis, const char *block_name,
- uint64_t start, size_t length);
-int ram_postcopy_incoming_init(MigrationIncomingState *mis);
-
-/**
- * @migrate_add_blocker - prevent migration from proceeding
- *
- * @reason - an error to be returned whenever migration is attempted
- */
-void migrate_add_blocker(Error *reason);
-
-/**
- * @migrate_del_blocker - remove a blocking error from migration
- *
- * @reason - the error blocking migration
- */
-void migrate_del_blocker(Error *reason);
-
-bool migrate_postcopy_ram(void);
-bool migrate_zero_blocks(void);
-
-bool migrate_auto_converge(void);
-
-int xbzrle_encode_buffer(uint8_t *old_buf, uint8_t *new_buf, int slen,
- uint8_t *dst, int dlen);
-int xbzrle_decode_buffer(uint8_t *src, int slen, uint8_t *dst, int dlen);
-
-int migrate_use_xbzrle(void);
-int64_t migrate_xbzrle_cache_size(void);
-
-int64_t xbzrle_cache_resize(int64_t new_size);
-
-bool migrate_use_compression(void);
-int migrate_compress_level(void);
-int migrate_compress_threads(void);
-int migrate_decompress_threads(void);
-bool migrate_use_events(void);
-
-/* Sending on the return path - generic and then for each message type */
-void migrate_send_rp_message(MigrationIncomingState *mis,
- enum mig_rp_message_type message_type,
- uint16_t len, void *data);
-void migrate_send_rp_shut(MigrationIncomingState *mis,
- uint32_t value);
-void migrate_send_rp_pong(MigrationIncomingState *mis,
- uint32_t value);
-void migrate_send_rp_req_pages(MigrationIncomingState *mis, const char* rbname,
- ram_addr_t start, size_t len);
-
-void ram_control_before_iterate(QEMUFile *f, uint64_t flags);
-void ram_control_after_iterate(QEMUFile *f, uint64_t flags);
-void ram_control_load_hook(QEMUFile *f, uint64_t flags, void *data);
-
-/* Whenever this is found in the data stream, the flags
- * will be passed to ram_control_load_hook in the incoming-migration
- * side. This lets before_ram_iterate/after_ram_iterate add
- * transport-specific sections to the RAM migration data.
- */
-#define RAM_SAVE_FLAG_HOOK 0x80
-
-#define RAM_SAVE_CONTROL_NOT_SUPP -1000
-#define RAM_SAVE_CONTROL_DELAYED -2000
-
-size_t ram_control_save_page(QEMUFile *f, ram_addr_t block_offset,
- ram_addr_t offset, size_t size,
- uint64_t *bytes_sent);
-
-void ram_mig_init(void);
-void savevm_skip_section_footers(void);
-void register_global_state(void);
-void global_state_set_optional(void);
-void savevm_skip_configuration(void);
-int global_state_store(void);
-void global_state_store_running(void);
-
-void flush_page_queue(MigrationState *ms);
-int ram_save_queue_pages(MigrationState *ms, const char *rbname,
- ram_addr_t start, ram_addr_t len);
-
-PostcopyState postcopy_state_get(void);
-/* Set the state and return the old state */
-PostcopyState postcopy_state_set(PostcopyState new_state);
-#endif