telecom: Introduce the local priority attribute into the data set.

The Telecom Profiles G.8275.1 and G.8275.2 have invented a new
per-port and per-clock attribute, not in 1588, called "localPriority".
The use of this attribute is a distinguishing feature of the telecom
data set comparison algorithm.

This patch adds the attribute, hard coded to its default value.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>

clock.c

@@ -931,6 +931,7 @@ struct clock *clock_create(enum clock_type type, struct config *config,
 	    c->dds.flags & DDS_SLAVE_ONLY) {
 		c->dds.clockQuality.clockClass = 255;
 	}
+	c->default_dataset.localPriority = 128;
 
 	/* Harmonize the twoStepFlag with the time_stamping option. */
 	if (config_harmonize_onestep(config)) {

ds.h

@@ -55,6 +55,7 @@ struct dataset {
 	struct ClockIdentity identity;
 	struct ClockQuality  quality;
 	UInteger8            priority2;
+	UInteger8            localPriority; /* Telecom Profile only */
 	UInteger16           stepsRemoved;
 	struct PortIdentity  sender;
 	struct PortIdentity  receiver;

port.c

@@ -77,6 +77,7 @@ static void announce_to_dataset(struct ptp_message *m, struct port *p,
 	out->identity     = a->grandmasterIdentity;
 	out->quality      = a->grandmasterClockQuality;
 	out->priority2    = a->grandmasterPriority2;
+	out->localPriority = 128;
 	out->stepsRemoved = a->stepsRemoved;
 	out->sender       = m->header.sourcePortIdentity;
 	out->receiver     = p->portIdentity;