migration: move include files to include/migration/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

6 files changed, 1035 insertions, 1 deletions

diff --git a/include/migration/block.h b/include/migration/block.h
new file mode 100644
index 0000000000..ffa8ac0bdd
--- /dev/null
+++ b/include/migration/block.h
@@ -0,0 +1,23 @@
+/*
+ * QEMU live block migration
+ *
+ * Copyright IBM, Corp. 2009
+ *
+ * Authors:
+ *  Liran Schour   <lirans@il.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 BLOCK_MIGRATION_H
+#define BLOCK_MIGRATION_H
+
+void blk_mig_init(void);
+int blk_mig_active(void);
+uint64_t blk_mig_bytes_transferred(void);
+uint64_t blk_mig_bytes_remaining(void);
+uint64_t blk_mig_bytes_total(void);
+
+#endif /* BLOCK_MIGRATION_H */
diff --git a/include/migration/migration.h b/include/migration/migration.h
new file mode 100644
index 0000000000..a95f761e4c
--- /dev/null
+++ b/include/migration/migration.h
@@ -0,0 +1,131 @@
+/*
+ * 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 "notify.h"
+#include "qapi/error.h"
+#include "migration/vmstate.h"
+#include "qapi-types.h"
+
+struct MigrationParams {
+    bool blk;
+    bool shared;
+};
+
+typedef struct MigrationState MigrationState;
+
+struct MigrationState
+{
+    int64_t bandwidth_limit;
+    QEMUFile *file;
+    int fd;
+    int state;
+    int (*get_error)(MigrationState *s);
+    int (*close)(MigrationState *s);
+    int (*write)(MigrationState *s, const void *buff, size_t size);
+    void *opaque;
+    MigrationParams params;
+    int64_t total_time;
+    int64_t downtime;
+    int64_t expected_downtime;
+    int64_t dirty_pages_rate;
+    bool enabled_capabilities[MIGRATION_CAPABILITY_MAX];
+    int64_t xbzrle_cache_size;
+};
+
+void process_incoming_migration(QEMUFile *f);
+
+void qemu_start_incoming_migration(const char *uri, Error **errp);
+
+uint64_t migrate_max_downtime(void);
+
+void do_info_migrate_print(Monitor *mon, const QObject *data);
+
+void do_info_migrate(Monitor *mon, QObject **ret_data);
+
+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 migrate_fd_error(MigrationState *s);
+
+void migrate_fd_connect(MigrationState *s);
+
+ssize_t migrate_fd_put_buffer(MigrationState *s, const void *data,
+                              size_t size);
+void migrate_fd_put_ready(MigrationState *s);
+int migrate_fd_wait_for_unfreeze(MigrationState *s);
+int migrate_fd_close(MigrationState *s);
+
+void add_migration_state_change_notifier(Notifier *notify);
+void remove_migration_state_change_notifier(Notifier *notify);
+bool migration_is_active(MigrationState *);
+bool migration_has_finished(MigrationState *);
+bool migration_has_failed(MigrationState *);
+MigrationState *migrate_get_current(void);
+
+uint64_t ram_bytes_remaining(void);
+uint64_t ram_bytes_transferred(void);
+uint64_t ram_bytes_total(void);
+
+extern SaveVMHandlers savevm_ram_handlers;
+
+uint64_t dup_mig_bytes_transferred(void);
+uint64_t dup_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);
+
+/**
+ * @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);
+
+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);
+
+#endif
diff --git a/include/qemu/page_cache.h b/include/migration/page_cache.h
index 3839ac7726..3839ac7726 100644
--- a/include/qemu/page_cache.h
+++ b/include/migration/page_cache.h
diff --git a/include/migration/qemu-file.h b/include/migration/qemu-file.h
new file mode 100644
index 0000000000..d64bdbb19b
--- /dev/null
+++ b/include/migration/qemu-file.h
@@ -0,0 +1,241 @@
+/*
+ * QEMU System Emulator
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef QEMU_FILE_H
+#define QEMU_FILE_H 1
+
+/* This function writes a chunk of data to a file at the given position.
+ * The pos argument can be ignored if the file is only being used for
+ * streaming.  The handler should try to write all of the data it can.
+ */
+typedef int (QEMUFilePutBufferFunc)(void *opaque, const uint8_t *buf,
+                                    int64_t pos, int size);
+
+/* Read a chunk of data from a file at the given position.  The pos argument
+ * can be ignored if the file is only be used for streaming.  The number of
+ * bytes actually read should be returned.
+ */
+typedef int (QEMUFileGetBufferFunc)(void *opaque, uint8_t *buf,
+                                    int64_t pos, int size);
+
+/* Close a file
+ *
+ * Return negative error number on error, 0 or positive value on success.
+ *
+ * The meaning of return value on success depends on the specific back-end being
+ * used.
+ */
+typedef int (QEMUFileCloseFunc)(void *opaque);
+
+/* Called to return the OS file descriptor associated to the QEMUFile.
+ */
+typedef int (QEMUFileGetFD)(void *opaque);
+
+/* Called to determine if the file has exceeded its bandwidth allocation.  The
+ * bandwidth capping is a soft limit, not a hard limit.
+ */
+typedef int (QEMUFileRateLimit)(void *opaque);
+
+/* Called to change the current bandwidth allocation. This function must return
+ * the new actual bandwidth. It should be new_rate if everything goes ok, and
+ * the old rate otherwise
+ */
+typedef int64_t (QEMUFileSetRateLimit)(void *opaque, int64_t new_rate);
+typedef int64_t (QEMUFileGetRateLimit)(void *opaque);
+
+typedef struct QEMUFileOps {
+    QEMUFilePutBufferFunc *put_buffer;
+    QEMUFileGetBufferFunc *get_buffer;
+    QEMUFileCloseFunc *close;
+    QEMUFileGetFD *get_fd;
+    QEMUFileRateLimit *rate_limit;
+    QEMUFileSetRateLimit *set_rate_limit;
+    QEMUFileGetRateLimit *get_rate_limit;
+} QEMUFileOps;
+
+QEMUFile *qemu_fopen_ops(void *opaque, const QEMUFileOps *ops);
+QEMUFile *qemu_fopen(const char *filename, const char *mode);
+QEMUFile *qemu_fdopen(int fd, const char *mode);
+QEMUFile *qemu_fopen_socket(int fd);
+QEMUFile *qemu_popen(FILE *popen_file, const char *mode);
+QEMUFile *qemu_popen_cmd(const char *command, const char *mode);
+int qemu_get_fd(QEMUFile *f);
+int qemu_fclose(QEMUFile *f);
+void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size);
+void qemu_put_byte(QEMUFile *f, int v);
+
+static inline void qemu_put_ubyte(QEMUFile *f, unsigned int v)
+{
+    qemu_put_byte(f, (int)v);
+}
+
+#define qemu_put_sbyte qemu_put_byte
+
+void qemu_put_be16(QEMUFile *f, unsigned int v);
+void qemu_put_be32(QEMUFile *f, unsigned int v);
+void qemu_put_be64(QEMUFile *f, uint64_t v);
+int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size);
+int qemu_get_byte(QEMUFile *f);
+
+static inline unsigned int qemu_get_ubyte(QEMUFile *f)
+{
+    return (unsigned int)qemu_get_byte(f);
+}
+
+#define qemu_get_sbyte qemu_get_byte
+
+unsigned int qemu_get_be16(QEMUFile *f);
+unsigned int qemu_get_be32(QEMUFile *f);
+uint64_t qemu_get_be64(QEMUFile *f);
+
+int qemu_file_rate_limit(QEMUFile *f);
+int64_t qemu_file_set_rate_limit(QEMUFile *f, int64_t new_rate);
+int64_t qemu_file_get_rate_limit(QEMUFile *f);
+int qemu_file_get_error(QEMUFile *f);
+
+/* Try to send any outstanding data.  This function is useful when output is
+ * halted due to rate limiting or EAGAIN errors occur as it can be used to
+ * resume output. */
+int qemu_file_put_notify(QEMUFile *f);
+
+static inline void qemu_put_be64s(QEMUFile *f, const uint64_t *pv)
+{
+    qemu_put_be64(f, *pv);
+}
+
+static inline void qemu_put_be32s(QEMUFile *f, const uint32_t *pv)
+{
+    qemu_put_be32(f, *pv);
+}
+
+static inline void qemu_put_be16s(QEMUFile *f, const uint16_t *pv)
+{
+    qemu_put_be16(f, *pv);
+}
+
+static inline void qemu_put_8s(QEMUFile *f, const uint8_t *pv)
+{
+    qemu_put_byte(f, *pv);
+}
+
+static inline void qemu_get_be64s(QEMUFile *f, uint64_t *pv)
+{
+    *pv = qemu_get_be64(f);
+}
+
+static inline void qemu_get_be32s(QEMUFile *f, uint32_t *pv)
+{
+    *pv = qemu_get_be32(f);
+}
+
+static inline void qemu_get_be16s(QEMUFile *f, uint16_t *pv)
+{
+    *pv = qemu_get_be16(f);
+}
+
+static inline void qemu_get_8s(QEMUFile *f, uint8_t *pv)
+{
+    *pv = qemu_get_byte(f);
+}
+
+// Signed versions for type safety
+static inline void qemu_put_sbuffer(QEMUFile *f, const int8_t *buf, int size)
+{
+    qemu_put_buffer(f, (const uint8_t *)buf, size);
+}
+
+static inline void qemu_put_sbe16(QEMUFile *f, int v)
+{
+    qemu_put_be16(f, (unsigned int)v);
+}
+
+static inline void qemu_put_sbe32(QEMUFile *f, int v)
+{
+    qemu_put_be32(f, (unsigned int)v);
+}
+
+static inline void qemu_put_sbe64(QEMUFile *f, int64_t v)
+{
+    qemu_put_be64(f, (uint64_t)v);
+}
+
+static inline size_t qemu_get_sbuffer(QEMUFile *f, int8_t *buf, int size)
+{
+    return qemu_get_buffer(f, (uint8_t *)buf, size);
+}
+
+static inline int qemu_get_sbe16(QEMUFile *f)
+{
+    return (int)qemu_get_be16(f);
+}
+
+static inline int qemu_get_sbe32(QEMUFile *f)
+{
+    return (int)qemu_get_be32(f);
+}
+
+static inline int64_t qemu_get_sbe64(QEMUFile *f)
+{
+    return (int64_t)qemu_get_be64(f);
+}
+
+static inline void qemu_put_s8s(QEMUFile *f, const int8_t *pv)
+{
+    qemu_put_8s(f, (const uint8_t *)pv);
+}
+
+static inline void qemu_put_sbe16s(QEMUFile *f, const int16_t *pv)
+{
+    qemu_put_be16s(f, (const uint16_t *)pv);
+}
+
+static inline void qemu_put_sbe32s(QEMUFile *f, const int32_t *pv)
+{
+    qemu_put_be32s(f, (const uint32_t *)pv);
+}
+
+static inline void qemu_put_sbe64s(QEMUFile *f, const int64_t *pv)
+{
+    qemu_put_be64s(f, (const uint64_t *)pv);
+}
+
+static inline void qemu_get_s8s(QEMUFile *f, int8_t *pv)
+{
+    qemu_get_8s(f, (uint8_t *)pv);
+}
+
+static inline void qemu_get_sbe16s(QEMUFile *f, int16_t *pv)
+{
+    qemu_get_be16s(f, (uint16_t *)pv);
+}
+
+static inline void qemu_get_sbe32s(QEMUFile *f, int32_t *pv)
+{
+    qemu_get_be32s(f, (uint32_t *)pv);
+}
+
+static inline void qemu_get_sbe64s(QEMUFile *f, int64_t *pv)
+{
+    qemu_get_be64s(f, (uint64_t *)pv);
+}
+#endif
diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h
new file mode 100644
index 0000000000..623af0a29a
--- /dev/null
+++ b/include/migration/vmstate.h
@@ -0,0 +1,639 @@
+/*
+ * QEMU migration/snapshot declarations
+ *
+ * Copyright (c) 2009-2011 Red Hat, Inc.
+ *
+ * Original author: Juan Quintela <quintela@redhat.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef QEMU_VMSTATE_H
+#define QEMU_VMSTATE_H 1
+
+typedef void SaveStateHandler(QEMUFile *f, void *opaque);
+typedef int LoadStateHandler(QEMUFile *f, void *opaque, int version_id);
+
+typedef struct SaveVMHandlers {
+    void (*set_params)(const MigrationParams *params, void * opaque);
+    SaveStateHandler *save_state;
+    int (*save_live_setup)(QEMUFile *f, void *opaque);
+    int (*save_live_iterate)(QEMUFile *f, void *opaque);
+    int (*save_live_complete)(QEMUFile *f, void *opaque);
+    void (*cancel)(void *opaque);
+    LoadStateHandler *load_state;
+    bool (*is_active)(void *opaque);
+} SaveVMHandlers;
+
+int register_savevm(DeviceState *dev,
+                    const char *idstr,
+                    int instance_id,
+                    int version_id,
+                    SaveStateHandler *save_state,
+                    LoadStateHandler *load_state,
+                    void *opaque);
+
+int register_savevm_live(DeviceState *dev,
+                         const char *idstr,
+                         int instance_id,
+                         int version_id,
+                         SaveVMHandlers *ops,
+                         void *opaque);
+
+void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque);
+void register_device_unmigratable(DeviceState *dev, const char *idstr,
+                                                                void *opaque);
+
+
+typedef struct VMStateInfo VMStateInfo;
+typedef struct VMStateDescription VMStateDescription;
+
+struct VMStateInfo {
+    const char *name;
+    int (*get)(QEMUFile *f, void *pv, size_t size);
+    void (*put)(QEMUFile *f, void *pv, size_t size);
+};
+
+enum VMStateFlags {
+    VMS_SINGLE           = 0x001,
+    VMS_POINTER          = 0x002,
+    VMS_ARRAY            = 0x004,
+    VMS_STRUCT           = 0x008,
+    VMS_VARRAY_INT32     = 0x010,  /* Array with size in int32_t field*/
+    VMS_BUFFER           = 0x020,  /* static sized buffer */
+    VMS_ARRAY_OF_POINTER = 0x040,
+    VMS_VARRAY_UINT16    = 0x080,  /* Array with size in uint16_t field */
+    VMS_VBUFFER          = 0x100,  /* Buffer with size in int32_t field */
+    VMS_MULTIPLY         = 0x200,  /* multiply "size" field by field_size */
+    VMS_VARRAY_UINT8     = 0x400,  /* Array with size in uint8_t field*/
+    VMS_VARRAY_UINT32    = 0x800,  /* Array with size in uint32_t field*/
+};
+
+typedef struct {
+    const char *name;
+    size_t offset;
+    size_t size;
+    size_t start;
+    int num;
+    size_t num_offset;
+    size_t size_offset;
+    const VMStateInfo *info;
+    enum VMStateFlags flags;
+    const VMStateDescription *vmsd;
+    int version_id;
+    bool (*field_exists)(void *opaque, int version_id);
+} VMStateField;
+
+typedef struct VMStateSubsection {
+    const VMStateDescription *vmsd;
+    bool (*needed)(void *opaque);
+} VMStateSubsection;
+
+struct VMStateDescription {
+    const char *name;
+    int unmigratable;
+    int version_id;
+    int minimum_version_id;
+    int minimum_version_id_old;
+    LoadStateHandler *load_state_old;
+    int (*pre_load)(void *opaque);
+    int (*post_load)(void *opaque, int version_id);
+    void (*pre_save)(void *opaque);
+    VMStateField *fields;
+    const VMStateSubsection *subsections;
+};
+
+extern const VMStateInfo vmstate_info_bool;
+
+extern const VMStateInfo vmstate_info_int8;
+extern const VMStateInfo vmstate_info_int16;
+extern const VMStateInfo vmstate_info_int32;
+extern const VMStateInfo vmstate_info_int64;
+
+extern const VMStateInfo vmstate_info_uint8_equal;
+extern const VMStateInfo vmstate_info_uint16_equal;
+extern const VMStateInfo vmstate_info_int32_equal;
+extern const VMStateInfo vmstate_info_uint32_equal;
+extern const VMStateInfo vmstate_info_int32_le;
+
+extern const VMStateInfo vmstate_info_uint8;
+extern const VMStateInfo vmstate_info_uint16;
+extern const VMStateInfo vmstate_info_uint32;
+extern const VMStateInfo vmstate_info_uint64;
+
+extern const VMStateInfo vmstate_info_timer;
+extern const VMStateInfo vmstate_info_buffer;
+extern const VMStateInfo vmstate_info_unused_buffer;
+extern const VMStateInfo vmstate_info_bitmap;
+
+#define type_check_array(t1,t2,n) ((t1(*)[n])0 - (t2*)0)
+#define type_check_pointer(t1,t2) ((t1**)0 - (t2*)0)
+
+#define vmstate_offset_value(_state, _field, _type)                  \
+    (offsetof(_state, _field) +                                      \
+     type_check(_type, typeof_field(_state, _field)))
+
+#define vmstate_offset_pointer(_state, _field, _type)                \
+    (offsetof(_state, _field) +                                      \
+     type_check_pointer(_type, typeof_field(_state, _field)))
+
+#define vmstate_offset_array(_state, _field, _type, _num)            \
+    (offsetof(_state, _field) +                                      \
+     type_check_array(_type, typeof_field(_state, _field), _num))
+
+#define vmstate_offset_sub_array(_state, _field, _type, _start)      \
+    (offsetof(_state, _field[_start]))
+
+#define vmstate_offset_buffer(_state, _field)                        \
+    vmstate_offset_array(_state, _field, uint8_t,                    \
+                         sizeof(typeof_field(_state, _field)))
+
+#define VMSTATE_SINGLE_TEST(_field, _state, _test, _version, _info, _type) { \
+    .name         = (stringify(_field)),                             \
+    .version_id   = (_version),                                      \
+    .field_exists = (_test),                                         \
+    .size         = sizeof(_type),                                   \
+    .info         = &(_info),                                        \
+    .flags        = VMS_SINGLE,                                      \
+    .offset       = vmstate_offset_value(_state, _field, _type),     \
+}
+
+#define VMSTATE_POINTER(_field, _state, _version, _info, _type) {    \
+    .name       = (stringify(_field)),                               \
+    .version_id = (_version),                                        \
+    .info       = &(_info),                                          \
+    .size       = sizeof(_type),                                     \
+    .flags      = VMS_SINGLE|VMS_POINTER,                            \
+    .offset     = vmstate_offset_value(_state, _field, _type),       \
+}
+
+#define VMSTATE_POINTER_TEST(_field, _state, _test, _info, _type) {  \
+    .name       = (stringify(_field)),                               \
+    .info       = &(_info),                                          \
+    .field_exists = (_test),                                         \
+    .size       = sizeof(_type),                                     \
+    .flags      = VMS_SINGLE|VMS_POINTER,                            \
+    .offset     = vmstate_offset_value(_state, _field, _type),       \
+}
+
+#define VMSTATE_ARRAY(_field, _state, _num, _version, _info, _type) {\
+    .name       = (stringify(_field)),                               \
+    .version_id = (_version),                                        \
+    .num        = (_num),                                            \
+    .info       = &(_info),                                          \
+    .size       = sizeof(_type),                                     \
+    .flags      = VMS_ARRAY,                                         \
+    .offset     = vmstate_offset_array(_state, _field, _type, _num), \
+}
+
+#define VMSTATE_ARRAY_TEST(_field, _state, _num, _test, _info, _type) {\
+    .name         = (stringify(_field)),                              \
+    .field_exists = (_test),                                          \
+    .num          = (_num),                                           \
+    .info         = &(_info),                                         \
+    .size         = sizeof(_type),                                    \
+    .flags        = VMS_ARRAY,                                        \
+    .offset       = vmstate_offset_array(_state, _field, _type, _num),\
+}
+
+#define VMSTATE_SUB_ARRAY(_field, _state, _start, _num, _version, _info, _type) { \
+    .name       = (stringify(_field)),                               \
+    .version_id = (_version),                                        \
+    .num        = (_num),                                            \
+    .info       = &(_info),                                          \
+    .size       = sizeof(_type),                                     \
+    .flags      = VMS_ARRAY,                                         \
+    .offset     = vmstate_offset_sub_array(_state, _field, _type, _start), \
+}
+
+#define VMSTATE_ARRAY_INT32_UNSAFE(_field, _state, _field_num, _info, _type) {\
+    .name       = (stringify(_field)),                               \
+    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
+    .info       = &(_info),                                          \
+    .size       = sizeof(_type),                                     \
+    .flags      = VMS_VARRAY_INT32,                                  \
+    .offset     = offsetof(_state, _field),                          \
+}
+
+#define VMSTATE_VARRAY_INT32(_field, _state, _field_num, _version, _info, _type) {\
+    .name       = (stringify(_field)),                               \
+    .version_id = (_version),                                        \
+    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
+    .info       = &(_info),                                          \
+    .size       = sizeof(_type),                                     \
+    .flags      = VMS_VARRAY_INT32|VMS_POINTER,                      \
+    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
+}
+
+#define VMSTATE_VARRAY_UINT32(_field, _state, _field_num, _version, _info, _type) {\
+    .name       = (stringify(_field)),                               \
+    .version_id = (_version),                                        \
+    .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
+    .info       = &(_info),                                          \
+    .size       = sizeof(_type),                                     \
+    .flags      = VMS_VARRAY_UINT32|VMS_POINTER,                     \
+    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
+}
+
+#define VMSTATE_VARRAY_UINT16_UNSAFE(_field, _state, _field_num, _version, _info, _type) {\
+    .name       = (stringify(_field)),                               \
+    .version_id = (_version),                                        \
+    .num_offset = vmstate_offset_value(_state, _field_num, uint16_t),\
+    .info       = &(_info),                                          \
+    .size       = sizeof(_type),                                     \
+    .flags      = VMS_VARRAY_UINT16,                                 \
+    .offset     = offsetof(_state, _field),                          \
+}
+
+#define VMSTATE_STRUCT_TEST(_field, _state, _test, _version, _vmsd, _type) { \
+    .name         = (stringify(_field)),                             \
+    .version_id   = (_version),                                      \
+    .field_exists = (_test),                                         \
+    .vmsd         = &(_vmsd),                                        \
+    .size         = sizeof(_type),                                   \
+    .flags        = VMS_STRUCT,                                      \
+    .offset       = vmstate_offset_value(_state, _field, _type),     \
+}
+
+#define VMSTATE_STRUCT_POINTER_TEST(_field, _state, _test, _vmsd, _type) { \
+    .name         = (stringify(_field)),                             \
+    .field_exists = (_test),                                         \
+    .vmsd         = &(_vmsd),                                        \
+    .size         = sizeof(_type),                                   \
+    .flags        = VMS_STRUCT|VMS_POINTER,                          \
+    .offset       = vmstate_offset_value(_state, _field, _type),     \
+}
+
+#define VMSTATE_ARRAY_OF_POINTER(_field, _state, _num, _version, _info, _type) {\
+    .name       = (stringify(_field)),                               \
+    .version_id = (_version),                                        \
+    .num        = (_num),                                            \
+    .info       = &(_info),                                          \
+    .size       = sizeof(_type),                                     \
+    .flags      = VMS_ARRAY|VMS_ARRAY_OF_POINTER,                    \
+    .offset     = vmstate_offset_array(_state, _field, _type, _num), \
+}
+
+#define VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, _test, _version, _vmsd, _type) { \
+    .name         = (stringify(_field)),                             \
+    .num          = (_num),                                          \
+    .field_exists = (_test),                                         \
+    .version_id   = (_version),                                      \
+    .vmsd         = &(_vmsd),                                        \
+    .size         = sizeof(_type),                                   \
+    .flags        = VMS_STRUCT|VMS_ARRAY,                            \
+    .offset       = vmstate_offset_array(_state, _field, _type, _num),\
+}
+
+#define VMSTATE_STRUCT_VARRAY_UINT8(_field, _state, _field_num, _version, _vmsd, _type) { \
+    .name       = (stringify(_field)),                               \
+    .num_offset = vmstate_offset_value(_state, _field_num, uint8_t), \
+    .version_id = (_version),                                        \
+    .vmsd       = &(_vmsd),                                          \
+    .size       = sizeof(_type),                                     \
+    .flags      = VMS_STRUCT|VMS_VARRAY_UINT8,                       \
+    .offset     = offsetof(_state, _field),                          \
+}
+
+#define VMSTATE_STRUCT_VARRAY_POINTER_INT32(_field, _state, _field_num, _vmsd, _type) { \
+    .name       = (stringify(_field)),                               \
+    .version_id = 0,                                                 \
+    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
+    .size       = sizeof(_type),                                     \
+    .vmsd       = &(_vmsd),                                          \
+    .flags      = VMS_POINTER | VMS_VARRAY_INT32 | VMS_STRUCT,       \
+    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
+}
+
+#define VMSTATE_STRUCT_VARRAY_POINTER_UINT16(_field, _state, _field_num, _vmsd, _type) { \
+    .name       = (stringify(_field)),                               \
+    .version_id = 0,                                                 \
+    .num_offset = vmstate_offset_value(_state, _field_num, uint16_t),\
+    .size       = sizeof(_type),                                     \
+    .vmsd       = &(_vmsd),                                          \
+    .flags      = VMS_POINTER | VMS_VARRAY_UINT16 | VMS_STRUCT,      \
+    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
+}
+
+#define VMSTATE_STRUCT_VARRAY_INT32(_field, _state, _field_num, _version, _vmsd, _type) { \
+    .name       = (stringify(_field)),                               \
+    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
+    .version_id = (_version),                                        \
+    .vmsd       = &(_vmsd),                                          \
+    .size       = sizeof(_type),                                     \
+    .flags      = VMS_STRUCT|VMS_VARRAY_INT32,                       \
+    .offset     = offsetof(_state, _field),                          \
+}
+
+#define VMSTATE_STRUCT_VARRAY_UINT32(_field, _state, _field_num, _version, _vmsd, _type) { \
+    .name       = (stringify(_field)),                               \
+    .num_offset = vmstate_offset_value(_state, _field_num, uint32_t), \
+    .version_id = (_version),                                        \
+    .vmsd       = &(_vmsd),                                          \
+    .size       = sizeof(_type),                                     \
+    .flags      = VMS_STRUCT|VMS_VARRAY_UINT32,                      \
+    .offset     = offsetof(_state, _field),                          \
+}
+
+#define VMSTATE_STATIC_BUFFER(_field, _state, _version, _test, _start, _size) { \
+    .name         = (stringify(_field)),                             \
+    .version_id   = (_version),                                      \
+    .field_exists = (_test),                                         \
+    .size         = (_size - _start),                                \
+    .info         = &vmstate_info_buffer,                            \
+    .flags        = VMS_BUFFER,                                      \
+    .offset       = vmstate_offset_buffer(_state, _field) + _start,  \
+}
+
+#define VMSTATE_BUFFER_MULTIPLY(_field, _state, _version, _test, _start, _field_size, _multiply) { \
+    .name         = (stringify(_field)),                             \
+    .version_id   = (_version),                                      \
+    .field_exists = (_test),                                         \
+    .size_offset  = vmstate_offset_value(_state, _field_size, uint32_t),\
+    .size         = (_multiply),                                      \
+    .info         = &vmstate_info_buffer,                            \
+    .flags        = VMS_VBUFFER|VMS_MULTIPLY,                        \
+    .offset       = offsetof(_state, _field),                        \
+    .start        = (_start),                                        \
+}
+
+#define VMSTATE_VBUFFER(_field, _state, _version, _test, _start, _field_size) { \
+    .name         = (stringify(_field)),                             \
+    .version_id   = (_version),                                      \
+    .field_exists = (_test),                                         \
+    .size_offset  = vmstate_offset_value(_state, _field_size, int32_t),\
+    .info         = &vmstate_info_buffer,                            \
+    .flags        = VMS_VBUFFER|VMS_POINTER,                         \
+    .offset       = offsetof(_state, _field),                        \
+    .start        = (_start),                                        \
+}
+
+#define VMSTATE_VBUFFER_UINT32(_field, _state, _version, _test, _start, _field_size) { \
+    .name         = (stringify(_field)),                             \
+    .version_id   = (_version),                                      \
+    .field_exists = (_test),                                         \
+    .size_offset  = vmstate_offset_value(_state, _field_size, uint32_t),\
+    .info         = &vmstate_info_buffer,                            \
+    .flags        = VMS_VBUFFER|VMS_POINTER,                         \
+    .offset       = offsetof(_state, _field),                        \
+    .start        = (_start),                                        \
+}
+
+#define VMSTATE_BUFFER_UNSAFE_INFO(_field, _state, _version, _info, _size) { \
+    .name       = (stringify(_field)),                               \
+    .version_id = (_version),                                        \
+    .size       = (_size),                                           \
+    .info       = &(_info),                                          \
+    .flags      = VMS_BUFFER,                                        \
+    .offset     = offsetof(_state, _field),                          \
+}
+
+#define VMSTATE_UNUSED_BUFFER(_test, _version, _size) {              \
+    .name         = "unused",                                        \
+    .field_exists = (_test),                                         \
+    .version_id   = (_version),                                      \
+    .size         = (_size),                                         \
+    .info         = &vmstate_info_unused_buffer,                     \
+    .flags        = VMS_BUFFER,                                      \
+}
+
+/* _field_size should be a int32_t field in the _state struct giving the
+ * size of the bitmap _field in bits.
+ */
+#define VMSTATE_BITMAP(_field, _state, _version, _field_size) {      \
+    .name         = (stringify(_field)),                             \
+    .version_id   = (_version),                                      \
+    .size_offset  = vmstate_offset_value(_state, _field_size, int32_t),\
+    .info         = &vmstate_info_bitmap,                            \
+    .flags        = VMS_VBUFFER|VMS_POINTER,                         \
+    .offset       = offsetof(_state, _field),                        \
+}
+
+/* _f : field name
+   _f_n : num of elements field_name
+   _n : num of elements
+   _s : struct state name
+   _v : version
+*/
+
+#define VMSTATE_SINGLE(_field, _state, _version, _info, _type)        \
+    VMSTATE_SINGLE_TEST(_field, _state, NULL, _version, _info, _type)
+
+#define VMSTATE_STRUCT(_field, _state, _version, _vmsd, _type)        \
+    VMSTATE_STRUCT_TEST(_field, _state, NULL, _version, _vmsd, _type)
+
+#define VMSTATE_STRUCT_POINTER(_field, _state, _vmsd, _type)          \
+    VMSTATE_STRUCT_POINTER_TEST(_field, _state, NULL, _vmsd, _type)
+
+#define VMSTATE_STRUCT_ARRAY(_field, _state, _num, _version, _vmsd, _type) \
+    VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, NULL, _version,   \
+            _vmsd, _type)
+
+#define VMSTATE_BOOL_V(_f, _s, _v)                                    \
+    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_bool, bool)
+
+#define VMSTATE_INT8_V(_f, _s, _v)                                    \
+    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int8, int8_t)
+#define VMSTATE_INT16_V(_f, _s, _v)                                   \
+    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int16, int16_t)
+#define VMSTATE_INT32_V(_f, _s, _v)                                   \
+    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int32, int32_t)
+#define VMSTATE_INT64_V(_f, _s, _v)                                   \
+    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int64, int64_t)
+
+#define VMSTATE_UINT8_V(_f, _s, _v)                                   \
+    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint8, uint8_t)
+#define VMSTATE_UINT16_V(_f, _s, _v)                                  \
+    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint16, uint16_t)
+#define VMSTATE_UINT32_V(_f, _s, _v)                                  \
+    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint32, uint32_t)
+#define VMSTATE_UINT64_V(_f, _s, _v)                                  \
+    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint64, uint64_t)
+
+#define VMSTATE_BOOL(_f, _s)                                          \
+    VMSTATE_BOOL_V(_f, _s, 0)
+
+#define VMSTATE_INT8(_f, _s)                                          \
+    VMSTATE_INT8_V(_f, _s, 0)
+#define VMSTATE_INT16(_f, _s)                                         \
+    VMSTATE_INT16_V(_f, _s, 0)
+#define VMSTATE_INT32(_f, _s)                                         \
+    VMSTATE_INT32_V(_f, _s, 0)
+#define VMSTATE_INT64(_f, _s)                                         \
+    VMSTATE_INT64_V(_f, _s, 0)
+
+#define VMSTATE_UINT8(_f, _s)                                         \
+    VMSTATE_UINT8_V(_f, _s, 0)
+#define VMSTATE_UINT16(_f, _s)                                        \
+    VMSTATE_UINT16_V(_f, _s, 0)
+#define VMSTATE_UINT32(_f, _s)                                        \
+    VMSTATE_UINT32_V(_f, _s, 0)
+#define VMSTATE_UINT64(_f, _s)                                        \
+    VMSTATE_UINT64_V(_f, _s, 0)
+
+#define VMSTATE_UINT8_EQUAL(_f, _s)                                   \
+    VMSTATE_SINGLE(_f, _s, 0, vmstate_info_uint8_equal, uint8_t)
+
+#define VMSTATE_UINT16_EQUAL(_f, _s)                                  \
+    VMSTATE_SINGLE(_f, _s, 0, vmstate_info_uint16_equal, uint16_t)
+
+#define VMSTATE_UINT16_EQUAL_V(_f, _s, _v)                            \
+    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint16_equal, uint16_t)
+
+#define VMSTATE_INT32_EQUAL(_f, _s)                                   \
+    VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_equal, int32_t)
+
+#define VMSTATE_UINT32_EQUAL(_f, _s)                                   \
+    VMSTATE_SINGLE(_f, _s, 0, vmstate_info_uint32_equal, uint32_t)
+
+#define VMSTATE_INT32_LE(_f, _s)                                   \
+    VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_le, int32_t)
+
+#define VMSTATE_UINT8_TEST(_f, _s, _t)                               \
+    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint8, uint8_t)
+
+#define VMSTATE_UINT16_TEST(_f, _s, _t)                               \
+    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint16, uint16_t)
+
+#define VMSTATE_UINT32_TEST(_f, _s, _t)                                  \
+    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint32, uint32_t)
+
+#define VMSTATE_TIMER_TEST(_f, _s, _test)                             \
+    VMSTATE_POINTER_TEST(_f, _s, _test, vmstate_info_timer, QEMUTimer *)
+
+#define VMSTATE_TIMER_V(_f, _s, _v)                                   \
+    VMSTATE_POINTER(_f, _s, _v, vmstate_info_timer, QEMUTimer *)
+
+#define VMSTATE_TIMER(_f, _s)                                         \
+    VMSTATE_TIMER_V(_f, _s, 0)
+
+#define VMSTATE_TIMER_ARRAY(_f, _s, _n)                              \
+    VMSTATE_ARRAY_OF_POINTER(_f, _s, _n, 0, vmstate_info_timer, QEMUTimer *)
+
+#define VMSTATE_BOOL_ARRAY_V(_f, _s, _n, _v)                         \
+    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_bool, bool)
+
+#define VMSTATE_BOOL_ARRAY(_f, _s, _n)                               \
+    VMSTATE_BOOL_ARRAY_V(_f, _s, _n, 0)
+
+#define VMSTATE_UINT16_ARRAY_V(_f, _s, _n, _v)                         \
+    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint16, uint16_t)
+
+#define VMSTATE_UINT16_ARRAY(_f, _s, _n)                               \
+    VMSTATE_UINT16_ARRAY_V(_f, _s, _n, 0)
+
+#define VMSTATE_UINT8_ARRAY_V(_f, _s, _n, _v)                         \
+    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint8, uint8_t)
+
+#define VMSTATE_UINT8_ARRAY(_f, _s, _n)                               \
+    VMSTATE_UINT8_ARRAY_V(_f, _s, _n, 0)
+
+#define VMSTATE_UINT32_ARRAY_V(_f, _s, _n, _v)                        \
+    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint32, uint32_t)
+
+#define VMSTATE_UINT32_ARRAY(_f, _s, _n)                              \
+    VMSTATE_UINT32_ARRAY_V(_f, _s, _n, 0)
+
+#define VMSTATE_UINT64_ARRAY_V(_f, _s, _n, _v)                        \
+    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint64, uint64_t)
+
+#define VMSTATE_UINT64_ARRAY(_f, _s, _n)                              \
+    VMSTATE_UINT64_ARRAY_V(_f, _s, _n, 0)
+
+#define VMSTATE_INT16_ARRAY_V(_f, _s, _n, _v)                         \
+    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int16, int16_t)
+
+#define VMSTATE_INT16_ARRAY(_f, _s, _n)                               \
+    VMSTATE_INT16_ARRAY_V(_f, _s, _n, 0)
+
+#define VMSTATE_INT32_ARRAY_V(_f, _s, _n, _v)                         \
+    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int32, int32_t)
+
+#define VMSTATE_INT32_ARRAY(_f, _s, _n)                               \
+    VMSTATE_INT32_ARRAY_V(_f, _s, _n, 0)
+
+#define VMSTATE_UINT32_SUB_ARRAY(_f, _s, _start, _num)                \
+    VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_uint32, uint32_t)
+
+#define VMSTATE_UINT32_ARRAY(_f, _s, _n)                              \
+    VMSTATE_UINT32_ARRAY_V(_f, _s, _n, 0)
+
+#define VMSTATE_INT64_ARRAY_V(_f, _s, _n, _v)                         \
+    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int64, int64_t)
+
+#define VMSTATE_INT64_ARRAY(_f, _s, _n)                               \
+    VMSTATE_INT64_ARRAY_V(_f, _s, _n, 0)
+
+#define VMSTATE_BUFFER_V(_f, _s, _v)                                  \
+    VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, 0, sizeof(typeof_field(_s, _f)))
+
+#define VMSTATE_BUFFER(_f, _s)                                        \
+    VMSTATE_BUFFER_V(_f, _s, 0)
+
+#define VMSTATE_PARTIAL_BUFFER(_f, _s, _size)                         \
+    VMSTATE_STATIC_BUFFER(_f, _s, 0, NULL, 0, _size)
+
+#define VMSTATE_BUFFER_START_MIDDLE(_f, _s, _start) \
+    VMSTATE_STATIC_BUFFER(_f, _s, 0, NULL, _start, sizeof(typeof_field(_s, _f)))
+
+#define VMSTATE_PARTIAL_VBUFFER(_f, _s, _size)                        \
+    VMSTATE_VBUFFER(_f, _s, 0, NULL, 0, _size)
+
+#define VMSTATE_PARTIAL_VBUFFER_UINT32(_f, _s, _size)                        \
+    VMSTATE_VBUFFER_UINT32(_f, _s, 0, NULL, 0, _size)
+
+#define VMSTATE_SUB_VBUFFER(_f, _s, _start, _size)                    \
+    VMSTATE_VBUFFER(_f, _s, 0, NULL, _start, _size)
+
+#define VMSTATE_BUFFER_TEST(_f, _s, _test)                            \
+    VMSTATE_STATIC_BUFFER(_f, _s, 0, _test, 0, sizeof(typeof_field(_s, _f)))
+
+#define VMSTATE_BUFFER_UNSAFE(_field, _state, _version, _size)        \
+    VMSTATE_BUFFER_UNSAFE_INFO(_field, _state, _version, vmstate_info_buffer, _size)
+
+#define VMSTATE_UNUSED_V(_v, _size)                                   \
+    VMSTATE_UNUSED_BUFFER(NULL, _v, _size)
+
+#define VMSTATE_UNUSED(_size)                                         \
+    VMSTATE_UNUSED_V(0, _size)
+
+#define VMSTATE_UNUSED_TEST(_test, _size)                             \
+    VMSTATE_UNUSED_BUFFER(_test, 0, _size)
+
+#define VMSTATE_END_OF_LIST()                                         \
+    {}
+
+int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
+                       void *opaque, int version_id);
+void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
+                        void *opaque);
+int vmstate_register(DeviceState *dev, int instance_id,
+                     const VMStateDescription *vmsd, void *base);
+int vmstate_register_with_alias_id(DeviceState *dev, int instance_id,
+                                   const VMStateDescription *vmsd,
+                                   void *base, int alias_id,
+                                   int required_for_version);
+void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd,
+                        void *opaque);
+
+struct MemoryRegion;
+void vmstate_register_ram(struct MemoryRegion *memory, DeviceState *dev);
+void vmstate_unregister_ram(struct MemoryRegion *memory, DeviceState *dev);
+void vmstate_register_ram_global(struct MemoryRegion *memory);
+
+#endif
diff --git a/include/net/net.h b/include/net/net.h
index 26dd0cf29c..41d3729867 100644
--- a/include/net/net.h
+++ b/include/net/net.h
@@ -6,7 +6,7 @@
 #include "qapi/qmp/qdict.h"
 #include "qemu-option.h"
 #include "net/queue.h"
-#include "vmstate.h"
+#include "migration/vmstate.h"
 #include "qapi-types.h"
 
 struct MACAddr {