Elements / Flows

StoreFlowID

Store a flow identifier in each packet

SYNOPSIS§

StoreFlowID(OFFSET)

Ports: 1 input, 1 output
Processing: push

DESCRIPTION§

Store a 32-bit flow identifier at OFFSET bytes in the packet. Each new flow will have a different flow identifier, each core (if multiple threads will visit the element) will have a different identifier space.

Needs a FlowIPManager in front.

Keywords:

• OFFSET — The flowid offset. Default is 40.
• CAPACITY — Capacity of the flow-table that handles the identifiers. Default is 65536
• VERBOSE — Be verbose and print messages. Default is 0

EXAMPLES§

 FromMinDump(trace.pcap)
 -> CheckIPHeader(CHECKSUM false)
 -> FlowIPManagerIMP()
 -> StoreFlowID(OFFSET 40)
 -> ConsistencyCheck(OFFSET 40)
 -> Discard

 DriverManager(wait,  read cc.broken_ratio)

ELEMENT HANDLERS§

• broken_connections (read) — Total number of broken connections
• broken_packets (read) — Total number of broken packets
• broken_connections_ratio (read) — Ratio between total broken connections and total connections seen
• broken_packets_ratio (read) — Ratio between total broken packetsand total packets seen

Generated by click-elem2man from ../elements/flow/storeflowid.hh:13 on 2026/11/02.