The current state of this connection, from an iSCSI negotiation
point of view. Here are the states:
login - The transport protocol connection has been established,
but a valid iSCSI login response with the final bit set
has not been sent or received.
full - A valid iSCSI login response with the final bit set
has been sent or received.
logout - A valid iSCSI logout command has been sent or
received, but the transport protocol connection has
not yet been closed.