migration: Commands are only used inside migration.c

So, move them there.  Notice that we export functions that send
commands, not the command themselves.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>

2 files changed, 29 insertions, 32 deletions

diff --git a/include/migration/migration.h b/include/migration/migration.h
index dd52d3c16f..108212cd78 100644
--- a/include/migration/migration.h
+++ b/include/migration/migration.h
@@ -22,18 +22,6 @@
 #include "exec/cpu-common.h"
 #include "qemu/coroutine_int.h"
 
-/* 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
-};
-
 /* State for the incoming migration */
 struct MigrationIncomingState {
     QEMUFile *from_src_file;
@@ -176,9 +164,6 @@ 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,
diff --git a/migration/migration.c b/migration/migration.c
index b23dfd3e25..031cb43e8e 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -86,6 +86,18 @@ static NotifierList migration_state_notifiers =
 
 static bool deferred_incoming;
 
+/* 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
+};
+
 /* When we add fault tolerance, we could have several
    migrations at once.  For now we don't need to add
    dynamic creation of migration */
@@ -292,6 +304,23 @@ static void deferred_incoming_migration(Error **errp)
     deferred_incoming = true;
 }
 
+/*
+ * Send a message on the return channel back to the source
+ * of the migration.
+ */
+static void migrate_send_rp_message(MigrationIncomingState *mis,
+                                    enum mig_rp_message_type message_type,
+                                    uint16_t len, void *data)
+{
+    trace_migrate_send_rp_message((int)message_type, len);
+    qemu_mutex_lock(&mis->rp_mutex);
+    qemu_put_be16(mis->to_src_file, (unsigned int)message_type);
+    qemu_put_be16(mis->to_src_file, len);
+    qemu_put_buffer(mis->to_src_file, data, len);
+    qemu_fflush(mis->to_src_file);
+    qemu_mutex_unlock(&mis->rp_mutex);
+}
+
 /* Request a range of pages from the source VM at the given
  * start address.
  *   rbname: Name of the RAMBlock to request the page in, if NULL it's the same
@@ -462,23 +491,6 @@ void migration_fd_process_incoming(QEMUFile *f)
 }
 
 /*
- * Send a message on the return channel back to the source
- * of the migration.
- */
-void migrate_send_rp_message(MigrationIncomingState *mis,
-                             enum mig_rp_message_type message_type,
-                             uint16_t len, void *data)
-{
-    trace_migrate_send_rp_message((int)message_type, len);
-    qemu_mutex_lock(&mis->rp_mutex);
-    qemu_put_be16(mis->to_src_file, (unsigned int)message_type);
-    qemu_put_be16(mis->to_src_file, len);
-    qemu_put_buffer(mis->to_src_file, data, len);
-    qemu_fflush(mis->to_src_file);
-    qemu_mutex_unlock(&mis->rp_mutex);
-}
-
-/*
  * Send a 'SHUT' message on the return channel with the given value
  * to indicate that we've finished with the RP.  Non-0 value indicates
  * error.