Function decodeExtendedSwitchFlowRecord

layers/sflow.go:1107–1119

Extended switch records have the following structure: 0 15 31 +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ | 20 bit Interprise (0) |12 bit format | +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ | record length

(data *[]byte)

//  +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

func decodeExtendedSwitchFlowRecord(data *[]byte) (SFlowExtendedSwitchFlowRecord, error) {
	es := SFlowExtendedSwitchFlowRecord{}
	var fdf SFlowFlowDataFormat

	*data, fdf = (*data)[4:], SFlowFlowDataFormat(binary.BigEndian.Uint32((*data)[:4]))
	es.EnterpriseID, es.Format = fdf.decode()
	*data, es.FlowDataLength = (*data)[4:], binary.BigEndian.Uint32((*data)[:4])
	*data, es.IncomingVLAN = (*data)[4:], binary.BigEndian.Uint32((*data)[:4])
	*data, es.IncomingVLANPriority = (*data)[4:], binary.BigEndian.Uint32((*data)[:4])
	*data, es.OutgoingVLAN = (*data)[4:], binary.BigEndian.Uint32((*data)[:4])
	*data, es.OutgoingVLANPriority = (*data)[4:], binary.BigEndian.Uint32((*data)[:4])
	return es, nil
}

// SFlowExtendedRouterFlowRecord gives additional information
// about the layer 3 routing information used to forward