Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 52 insertions, 0 deletions

diff --git a/migration/block.h b/migration/block.h
new file mode 100644
index 000000000..3178609db
--- /dev/null
+++ b/migration/block.h
@@ -0,0 +1,52 @@
+/*
+ * 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 MIGRATION_BLOCK_H
+#define MIGRATION_BLOCK_H
+
+#ifdef CONFIG_LIVE_BLOCK_MIGRATION
+int blk_mig_active(void);
+int blk_mig_bulk_active(void);
+uint64_t blk_mig_bytes_transferred(void);
+uint64_t blk_mig_bytes_remaining(void);
+uint64_t blk_mig_bytes_total(void);
+
+#else
+static inline int blk_mig_active(void)
+{
+    return false;
+}
+
+static inline int blk_mig_bulk_active(void)
+{
+    return false;
+}
+
+static inline uint64_t blk_mig_bytes_transferred(void)
+{
+    return 0;
+}
+
+static inline uint64_t blk_mig_bytes_remaining(void)
+{
+    return 0;
+}
+
+static inline uint64_t blk_mig_bytes_total(void)
+{
+    return 0;
+}
+#endif /* CONFIG_LIVE_BLOCK_MIGRATION */
+
+void migrate_set_block_enabled(bool value, Error **errp);
+#endif /* MIGRATION_BLOCK_H */