/* compare portIdentity to an empty one */
Boolean portIdentityEmpty(PortIdentity *portIdentity) {
PortIdentity zero;
memset(&zero, 0, sizeof(PortIdentity));
if (!cmpPortIdentity(portIdentity, &zero)) {
return TRUE;
}
return FALSE;
}
/* compare portIdentity to all ones port identity */
Boolean portIdentityAllOnes(PortIdentity *portIdentity) {
PortIdentity allOnes;
memset(&allOnes, 0xFF, sizeof(PortIdentity));
if (!cmpPortIdentity(portIdentity, &allOnes)) {
return TRUE;
}
return FALSE;
}
/*Local clock is synchronized to Ebest Table 16 (9.3.5) of the spec*/
void s1(MsgHeader *header,MsgAnnounce *announce,PtpClock *ptpClock, const RunTimeOpts *rtOpts)
{
Boolean firstUpdate = !cmpPortIdentity(&ptpClock->parentDS.parentPortIdentity, &ptpClock->portDS.portIdentity);
TimePropertiesDS tpPrevious = ptpClock->timePropertiesDS;
Boolean previousLeap59 = FALSE;
Boolean previousLeap61 = FALSE;
Boolean leapChange = FALSE;
Integer16 previousUtcOffset = 0;
previousLeap59 = ptpClock->timePropertiesDS.leap59;
previousLeap61 = ptpClock->timePropertiesDS.leap61;
previousUtcOffset = ptpClock->timePropertiesDS.currentUtcOffset;
/* Current DS */
ptpClock->currentDS.stepsRemoved = announce->stepsRemoved + 1;
/* Parent DS */
copyClockIdentity(ptpClock->parentDS.parentPortIdentity.clockIdentity,
header->sourcePortIdentity.clockIdentity);
ptpClock->parentDS.parentPortIdentity.portNumber =
header->sourcePortIdentity.portNumber;
copyClockIdentity(ptpClock->parentDS.grandmasterIdentity,
announce->grandmasterIdentity);
ptpClock->parentDS.grandmasterClockQuality.clockAccuracy =
announce->grandmasterClockQuality.clockAccuracy;
ptpClock->parentDS.grandmasterClockQuality.clockClass =
announce->grandmasterClockQuality.clockClass;
ptpClock->parentDS.grandmasterClockQuality.offsetScaledLogVariance =
announce->grandmasterClockQuality.offsetScaledLogVariance;
ptpClock->parentDS.grandmasterPriority1 = announce->grandmasterPriority1;
ptpClock->parentDS.grandmasterPriority2 = announce->grandmasterPriority2;
/* use the granted interval if using signaling, otherwise we would try to arm a timer for 2^127! */
if(rtOpts->unicastNegotiation && ptpClock->parentGrants != NULL && ptpClock->parentGrants->grantData[ANNOUNCE_INDEXED].granted) {
ptpClock->portDS.logAnnounceInterval = ptpClock->parentGrants->grantData[ANNOUNCE_INDEXED].logInterval;
} else if (header->logMessageInterval != UNICAST_MESSAGEINTERVAL) {
ptpClock->portDS.logAnnounceInterval = header->logMessageInterval;
}
/* Timeproperties DS */
ptpClock->timePropertiesDS.currentUtcOffset = announce->currentUtcOffset;
if (ptpClock->portDS.portState != PTP_PASSIVE && ptpClock->timePropertiesDS.currentUtcOffsetValid &&
!IS_SET(header->flagField1, UTCV)) {
if(rtOpts->alwaysRespectUtcOffset)
WARNING("UTC Offset no longer valid and ptpengine:always_respect_utc_offset is set: continuing as normal\n");
else
WARNING("UTC Offset no longer valid - clock jump expected\n");
}
/* "Valid" is bit 2 in second octet of flagfield */
ptpClock->timePropertiesDS.currentUtcOffsetValid = IS_SET(header->flagField1, UTCV);
/* set PTP_PASSIVE-specific state */
p1(ptpClock, rtOpts);
/* only set leap flags in slave state - info from leap file takes priority*/
if (ptpClock->portDS.portState == PTP_SLAVE) {
if(ptpClock->clockStatus.override) {
ptpClock->timePropertiesDS.currentUtcOffset = ptpClock->clockStatus.utcOffset;
ptpClock->timePropertiesDS.leap59 = ptpClock->clockStatus.leapDelete;
ptpClock->timePropertiesDS.leap61 = ptpClock->clockStatus.leapInsert;
} else {
ptpClock->timePropertiesDS.leap59 = IS_SET(header->flagField1, LI59);
ptpClock->timePropertiesDS.leap61 = IS_SET(header->flagField1, LI61);
}
}