server/spice.h: semi-seamless migration interface, RHBZ #738266

semi-seamless migration details:

migration source side
---------------------
(1) spice_server_migrate_connect (*): tell client to link
    to the target side - send SPICE_MSG_MAIN_MIGRATE_BEGIN.
    This should be called upon client_migrate_info cmd.
    client_migrate_info is asynchronous.
(2) Complete spice_server_migrate_connect only when the client has been connected
    to the target - wait for SPICE_MSGC_MAIN_MIGRATE_(CONNECTED|CONNECT_ERROR) or a timeout.
(3) spice_server_migrate_end: tell client migration it can switch to the target - send
    SPICE_MSG_MAIN_MIGRATE_END.
(4) client cleans up all data related to the connection to the source and switches to the target.
    It sends SPICE_MSGC_MAIN_MIGRATE_END.

migration target side
---------------------
(1) the server identifies itself as a migraiton target since the client is linked with (connection_id != 0)
(2) server doesn't start the channels' logic (channel->link) till it receives SPICE_MSGC_MAIN_MIGRATE_END
    from the client.

*   After migration starts, the target qemu is blocked and cannot accept new spice client
    connections. Thus, we trigger the connection to the target upon client_migrate_info
    command.
(cherry picked from commit 6e56bea67c5648b0c81990171d4bc0cf1a402043 branch 0.8)

Conflicts:

	server/spice.h

1 files changed, 0 insertions, 3 deletions

diff --git a/server/spice-experimental.h b/server/spice-experimental.h
index 482ac44b..6997aa03 100644
--- a/server/spice-experimental.h
+++ b/server/spice-experimental.h
@@ -29,16 +29,13 @@ void spice_server_net_wire_recv_packet(SpiceNetWireInstance *sin,
                                        const uint8_t *pkt, int len);
 
 /* spice seamless client migration (broken) */
-
 enum {
     SPICE_MIGRATE_CLIENT_NONE = 1,
     SPICE_MIGRATE_CLIENT_WAITING,
     SPICE_MIGRATE_CLIENT_READY,
 };
 
-int spice_server_migrate_start(SpiceServer *s);
 int spice_server_migrate_client_state(SpiceServer *s);
-int spice_server_migrate_end(SpiceServer *s, int completed);
 
 #endif // __SPICE_EXPERIMENTAL_H__