Introduce TCP live migration protocol

This patch introduces a tcp protocol for live migration.  It can be used as
follows:

qemu-system-x86_64 -hda ~/images/linux-test.img -monitor stdio
 <vm runs for a while>
(qemu) migrate tcp:localhost:1025

On the same system:

qemu-system-x86_64 -hda ~/images/linux-test.img -incoming 
tcp:localhost:1025

The monitor can be interacted with while waiting for an incoming live 
migration.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5478 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/migration.h b/migration.h
index 61f77bd..9947f6a 100644
--- a/migration.h
+++ b/migration.h
@@ -39,5 +39,11 @@
 
 void do_info_migrate(void);
 
+int tcp_start_incoming_migration(const char *host_port);
+
+MigrationState *tcp_start_outgoing_migration(const char *host_port,
+					     int64_t bandwidth_limit,
+					     int detach);
+
 #endif