migration: Create savevm.h for functions exported from savevm.c

This removes last trace of migration functions from sysemu/sysemu.h.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>

5 files changed, 69 insertions, 4 deletions

diff --git a/migration/colo.c b/migration/colo.c
index 8c13a3c3f1..3dd1390573 100644
--- a/migration/colo.c
+++ b/migration/colo.c
@@ -16,6 +16,7 @@
 #include "qemu-file-channel.h"
 #include "migration/migration.h"
 #include "migration/qemu-file.h"
+#include "savevm.h"
 #include "migration/colo.h"
 #include "migration/block.h"
 #include "io/channel-buffer.h"
diff --git a/migration/migration.c b/migration/migration.c
index ad29e53400..7087d1abbb 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -19,6 +19,7 @@
 #include "qemu/main-loop.h"
 #include "migration/blocker.h"
 #include "migration/migration.h"
+#include "savevm.h"
 #include "qemu-file-channel.h"
 #include "migration/qemu-file.h"
 #include "migration/vmstate.h"
diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index a37620dac6..3f9ae1bff2 100644
--- a/migration/postcopy-ram.c
+++ b/migration/postcopy-ram.c
@@ -22,6 +22,7 @@
 #include "exec/target_page.h"
 #include "migration/migration.h"
 #include "migration/qemu-file.h"
+#include "savevm.h"
 #include "postcopy-ram.h"
 #include "sysemu/sysemu.h"
 #include "sysemu/balloon.h"
diff --git a/migration/savevm.c b/migration/savevm.c
index a4532b6b58..a2d4f9c53c 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -36,6 +36,7 @@
 #include "qemu/timer.h"
 #include "migration/migration.h"
 #include "qemu-file-channel.h"
+#include "savevm.h"
 #include "postcopy-ram.h"
 #include "qapi/qmp/qerror.h"
 #include "qemu/error-report.h"
@@ -63,6 +64,26 @@ const unsigned int postcopy_ram_discard_version = 0;
 
 static bool skip_section_footers;
 
+/* Subcommands for QEMU_VM_COMMAND */
+enum qemu_vm_cmd {
+    MIG_CMD_INVALID = 0,   /* Must be 0 */
+    MIG_CMD_OPEN_RETURN_PATH,  /* Tell the dest to open the Return path */
+    MIG_CMD_PING,              /* Request a PONG on the RP */
+
+    MIG_CMD_POSTCOPY_ADVISE,       /* Prior to any page transfers, just
+                                      warn we might want to do PC */
+    MIG_CMD_POSTCOPY_LISTEN,       /* Start listening for incoming
+                                      pages as it's running. */
+    MIG_CMD_POSTCOPY_RUN,          /* Start execution */
+
+    MIG_CMD_POSTCOPY_RAM_DISCARD,  /* A list of pages to discard that
+                                      were previously sent during
+                                      precopy but are dirty. */
+    MIG_CMD_PACKAGED,          /* Send a wrapped stream within this stream */
+    MIG_CMD_MAX
+};
+
+#define MAX_VM_CMD_PACKAGED_SIZE (1ul << 24)
 static struct mig_cmd_args {
     ssize_t     len; /* -1 = variable */
     const char *name;
@@ -807,10 +828,10 @@ static void save_section_footer(QEMUFile *f, SaveStateEntry *se)
  * @len: Length of associated data
  * @data: Data associated with command.
  */
-void qemu_savevm_command_send(QEMUFile *f,
-                              enum qemu_vm_cmd command,
-                              uint16_t len,
-                              uint8_t *data)
+static void qemu_savevm_command_send(QEMUFile *f,
+                                     enum qemu_vm_cmd command,
+                                     uint16_t len,
+                                     uint8_t *data)
 {
     trace_savevm_command_send(command, len);
     qemu_put_byte(f, QEMU_VM_COMMAND);
diff --git a/migration/savevm.h b/migration/savevm.h
new file mode 100644
index 0000000000..eb4487771a
--- /dev/null
+++ b/migration/savevm.h
@@ -0,0 +1,41 @@
+/*
+ * QEMU save vm functions
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ * Copyright (c) 2009-2017 Red Hat Inc
+ *
+ * Authors:
+ *  Juan Quintela <quintela@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef MIGRATION_SAVEVM_H
+#define MIGRATION_SAVEVM_H
+
+bool qemu_savevm_state_blocked(Error **errp);
+void qemu_savevm_state_begin(QEMUFile *f);
+void qemu_savevm_state_header(QEMUFile *f);
+int qemu_savevm_state_iterate(QEMUFile *f, bool postcopy);
+void qemu_savevm_state_cleanup(void);
+void qemu_savevm_state_complete_postcopy(QEMUFile *f);
+void qemu_savevm_state_complete_precopy(QEMUFile *f, bool iterable_only);
+void qemu_savevm_state_pending(QEMUFile *f, uint64_t max_size,
+                               uint64_t *res_non_postcopiable,
+                               uint64_t *res_postcopiable);
+void qemu_savevm_send_ping(QEMUFile *f, uint32_t value);
+void qemu_savevm_send_open_return_path(QEMUFile *f);
+int qemu_savevm_send_packaged(QEMUFile *f, const uint8_t *buf, size_t len);
+void qemu_savevm_send_postcopy_advise(QEMUFile *f);
+void qemu_savevm_send_postcopy_listen(QEMUFile *f);
+void qemu_savevm_send_postcopy_run(QEMUFile *f);
+
+void qemu_savevm_send_postcopy_ram_discard(QEMUFile *f, const char *name,
+                                           uint16_t len,
+                                           uint64_t *start_list,
+                                           uint64_t *length_list);
+
+int qemu_loadvm_state(QEMUFile *f);
+
+#endif