On Mon, Nov 08, 2021 at 09:44:27AM +0000, Joanna Yurdal wrote:
> Without the proposed patch the result of pmc "get time_status" when lost
> synchronization with external GM shows:
> pmc -u -b 0 'get time_status' :
> c86314.fffe.30006e-0 seq 0 RESPONSE MANAGEMENT TIME_STATUS_NP
> master_offset 192
> ingress_time 0
> cumulativeScaledRateOffset +0.000000000
> scaledLastGmPhaseChange 0
> gmTimeBaseIndicator 0
> lastGmPhaseChange 0x0000'0000000000000000.0000
> gmPresent true
> gmIdentity ec4670.fffe.00ee5f
>
> while result of the "get port_data_set" is:
> c86314.fffe.30006e-1 seq 0 RESPONSE MANAGEMENT PORT_DATA_SET
> portIdentity c86314.fffe.30006e-1
> portState LISTENING
You omitted the important data, namely PARENT_DATA_SET. You will see
that grandmasterIdentity differs from PORT_DATA_SET.portIdentity.
That is the very condition used to set gmPresent:
if (cid_eq(&c->dad.pds.grandmasterIdentity,
&c->dds.clockIdentity))
tsn->gmPresent = 0;
else
tsn->gmPresent = 1;
Thanks,
Richard
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