[libvirt] Modules executed during Live Migration of Virtual machines

Hi, I am trying to write the patch file for live migration which uses UDP as the transport protocol. ---So I prepare to edit the existing API which uses the TCP as the transport protocol for the migration.I want to know the modules executing during live migration in current libvirt.(I m using ubuntu10.10 as the guest and suitable latest version of libvirt) ----If any document which clearly shows the actual migration process. I mean which are the functions called during live migration and how the data flow occurs between the two physical machines or the hypervisor. --In LAN the UDP can be used for the live migration as the loss of packets and collision of packets are negligibly less. --Even RUDP can also be used instead of TCP, as RUDP is reliable. --The complete set of the code which responsible for live migration is required where I can get that..? Thanks and Regards Prakash H.R M.Tech Student at RVCE, Bangalore +91-8904301073