Add a clock method to receive the follow up information TLV.

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

clock.c

@@ -70,6 +70,7 @@ struct clock {
 	tmv_t path_delay;
 	struct mave *avg_delay;
 	struct freq_estimator fest;
+	struct time_status_np status;
 	double nrr;
 	tmv_t c1;
 	tmv_t c2;
@@ -473,6 +474,15 @@ UInteger8 clock_domain_number(struct clock *c)
 	return c->dds.domainNumber;
 }
 
+void clock_follow_up_info(struct clock *c, struct follow_up_info_tlv *f)
+{
+	c->status.cumulativeScaledRateOffset = f->cumulativeScaledRateOffset;
+	c->status.scaledLastGmPhaseChange = f->scaledLastGmPhaseChange;
+	c->status.gmTimeBaseIndicator = f->gmTimeBaseIndicator;
+	memcpy(&c->status.lastGmPhaseChange, &f->lastGmPhaseChange,
+	       sizeof(c->status.lastGmPhaseChange));
+}
+
 struct ClockIdentity clock_identity(struct clock *c)
 {
 	return c->dds.clockIdentity;

clock.h

@@ -24,6 +24,7 @@
 #include "ds.h"
 #include "config.h"
 #include "servo.h"
+#include "tlv.h"
 #include "tmv.h"
 #include "transport.h"
 
@@ -90,6 +91,13 @@ void clock_destroy(struct clock *c);
  */
 UInteger8 clock_domain_number(struct clock *c);
 
+/**
+ * Provide the follow_up info TLV from a slave port.
+ * @param c  The clock instance.
+ * @param f  Pointer to the TLV.
+ */
+void clock_follow_up_info(struct clock *c, struct follow_up_info_tlv *f);
+
 /**
  * Obtain a clock's identity from its default data set.
  * @param c  The clock instance.

tlv.h

@@ -165,6 +165,13 @@ struct follow_up_info_tlv {
 	Integer32     scaledLastGmPhaseChange;
 } PACKED;
 
+struct time_status_np {
+	UInteger32    cumulativeScaledRateOffset;
+	Integer32     scaledLastGmPhaseChange;
+	UInteger16    gmTimeBaseIndicator;
+	ScaledNs      lastGmPhaseChange;
+} PACKED;
+
 /**
  * Converts recognized value sub-fields into host byte order.
  * @param tlv Pointer to a Type Length Value field.