Many test cases will need to connect to the server or accept incoming
connections.  This patch extracts these operations into utility
functions that can be reused.
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NStefano Garzarella <sgarzare@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>