SNAX/HLS Management Programming Manual

Standard SNAX/HLS Definitions
Common Definitions
104708 Tandem Computers Incorporated 6–53
ZHLS–VAL–FSM–IMM–RQ–RESET
indicates that no definite response is owed.
ZFSM–QEC
reports the SNAX/HLS implementation of FSM_QEC. This FSM enforces the
quiesce protocol. The quiesce protocol allows either session partner to stop the
flow of messages from the other partner (HLS–FLOW–CONTROL, operation is set
to SM, stop messages).
When this field is in the ZHLS–MAP–STATUS–SESS–SEND token, it pertains to
the partner that sent the QEC (that is, the partner that is trying to quiesce the
other). When this field is in the ZHLS–MAP–STATUS–SESS–RECV token, it
pertains to the partner that receives the QEC (that is, the partner that is being
quiesced).
This field can have the following enumerated values:
ZHLS–VAL–FSM–QEC–NULL
indicates that this FSM is not yet initialized or is not used in the current
session.
ZHLS–VAL–FSM–QEC–P–QC
indicates that the response to a QEC message has been seen, indicating that
the sender of the QEC (the receiver of the QEC response) is asking the partner
to stop sending chains. The application program on the receiving side receives
the DT–FLOW–CONTROL (SM) message.
ZHLS–VAL–FSM–QEC–QUIESCED
indicates that the response to the QEC message has been seen, indicating that
the session is now quiesced. In this state, no normal–flow messages can be
sent by the quiesced half session until the partner releases the quiesce
operation with the RELQ request.
ZHLS–VAL–FSM–QEC–RESET
indicates that a quiesce operation is not in progress.
ZFSM–FSM–QRI–CHAIN
is reserved.