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Eddie Kohler edited this page Oct 17, 2017
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FrontDropQueue Element Documentation
NAME
FrontDropQueue — Click element;
stores packets in drop-from-front FIFO queue
SYNOPSIS
FrontDropQueue
FrontDropQueue(CAPACITY)
Ports: 1 input, 1-2 outputs
DESCRIPTION
Stores incoming packets in a first-in-first-out queue. Drops the head packet
before inserting the incoming packet if the queue already holds CAPACITY
packets. The default for CAPACITY is 1000.
ELEMENT HANDLERS
length (read-only) —
Returns the current number of packets in the queue.
highwater_length (read-only) —
Returns the maximum number of packets that have ever been in the queue at once.
capacity (read/write) —
Returns or sets the queue's capacity.
drops (read-only) —
Returns the number of packets dropped by the Queue so far. Dropped packets
are emitted on output 1 if output 1 exists.
reset_counts (write-only) —
When written, resets the drops and highwater_length counters.
reset (write-only) —
When written, drops all packets in the Queue.