/
conntrack.go
42 lines (37 loc) · 1.12 KB
/
conntrack.go
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// Copyright (c) 2022 Zededa, Inc.
// SPDX-License-Identifier: Apache-2.0
package nettrace
import (
"syscall"
"github.com/ti-mo/conntrack"
)
func conntrackToExportedEntry(flow *conntrack.Flow, capturedAt Timestamp) *ConntractEntry {
if flow == nil {
return nil
}
var tcpState TCPState
if flow.TupleOrig.Proto.Protocol == syscall.IPPROTO_TCP {
tcpState = TCPState(flow.ProtoInfo.TCP.State)
}
return &ConntractEntry{
CapturedAt: capturedAt,
Status: ConntrackStatus(flow.Status.Value),
TCPState: tcpState,
Mark: flow.Mark,
AddrOrig: conntrackToAddrTuple(flow.TupleOrig).toExportedAddrTuple(),
AddrReply: conntrackToAddrTuple(flow.TupleReply).toExportedAddrTuple(),
PacketsSent: flow.CountersOrig.Packets,
PacketsRecv: flow.CountersReply.Packets,
BytesSent: flow.CountersOrig.Bytes,
BytesRecv: flow.CountersReply.Bytes,
}
}
func conntrackToAddrTuple(tuple conntrack.Tuple) addrTuple {
return addrTuple{
proto: tuple.Proto.Protocol,
srcIP: tuple.IP.SourceAddress,
dstIP: tuple.IP.DestinationAddress,
srcPort: tuple.Proto.SourcePort,
dstPort: tuple.Proto.DestinationPort,
}
}