ark::time::PtpPacket

Defined in header “ark/time/ptp_packet.hh”.

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Represents a PTP packet as it comes over the wire the PTP system uses a few non-standard-sized fields, so we don’t try to use a packed structure. This is a relatively ‘pure’ representation, however.

Variables

• PtpMessageType type
  Type of the message.

• uint8_t transport_specific_fields
  Message identifier.

• uint8_t ptp_verison
  Version of the PTP message.

• uint16_t message_length
  Length of the message, including heading/body/suffix.

• uint8_t domain_number
  Domain number, should be the same on all communicating devices.

• uint16_t flags
  Flags, bit1 means we’re in two-step, bit2 means we’re unicasat.

• uint64_t correction_ns
  Correction for fractional nanoseconds (and path delay).

• uint64_t source_port_identity
  The source port identity.

• uint16_t source_port_id
  The source port ID (usually one). This is the PTP ID.

• uint16_t sequence_id
  The sequence ID note that for follow-up packets, this matches the sequence ID of the sync packet, and for delay response, it matches the ID of the delay request.

• PtpControlType control_field
  The control field, which indicates the type of message.

• uint8_t log_message_interval
  Generally 0x7f for unicast, othberwise, its the log2 interval between multicast messages.

• uint64_t timestamp_s
  Seconds.

• uint32_t timestamp_ns
  Nanoseconds.

• std::variant< PtpDelayResponseBody, PtpAnnounceBody > body
  Optional body contents.