User's Manual

Table IV.8 LinuxPTP TLV GRANDMASTER_SETTINGS_NP
clockQuality
utc_offset
4 bytes
Fields Length
2 bytes
time_source 1 byte
the clock quality of the current
grand master clock the slave
selected
Description
the UTC_Offset value set by the
grand master clock
time_flags 1 byte the time flag of the grand master
the time source of the grand master
d. LinuxPTP TLV GRANDMASTER_SETTINGS_NP (0xc001)
Table IV.7 LinuxPTP TLV TIME_STATUS_NP
master_offset
ingress_time
8 bytes
Fields Length
8 bytes
cumulativeScaledRateOffse
scaledLastGmPhaseChange
gmTimeBaseIndicator
lastGmPhaseChange
gmPresent
gmIdentity
4 bytes
4 bytes
2 bytes
10 bytes
4 bytes
8 bytes
the time difference
between master/slave at
the last handshake
Description
the hw ingress time stamp
of the last sync message
received by the slave
relative information in the
last received follow_up
message
relative information in the
last received follow_up
message
relative information in the
last received follow_up
message
relative information in the
last received follow_up
message
whether grandmaster is
present
the grandmaster identity if
gmPresent is 1
c. LinuxPTP TLV TIME_STATUS_NP (0xc000)
LinuxPTP specific TLV
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