Add a clock method to accept a peer delay estimate from a slave port.

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

clock.c

@@ -32,7 +32,6 @@
 #include "port.h"
 #include "servo.h"
 #include "print.h"
-#include "tmv.h"
 #include "util.h"
 
 #define FAULT_RESET_SECONDS 15
@@ -411,6 +410,11 @@ void clock_path_delay(struct clock *c, struct timespec req, struct timestamp rx,
 	pr_debug("path delay    %10lld %10lld", c->path_delay, pd);
 }
 
+void clock_peer_delay(struct clock *c, tmv_t ppd)
+{
+	c->path_delay = ppd;
+}
+
 void clock_remove_fda(struct clock *c, struct port *p, struct fdarray fda)
 {
 	int i, j, k;

clock.h

@@ -22,6 +22,7 @@
 
 #include "ds.h"
 #include "servo.h"
+#include "tmv.h"
 #include "transport.h"
 
 #define MAX_PORTS 8
@@ -128,6 +129,13 @@ struct PortIdentity clock_parent_identity(struct clock *c);
 void clock_path_delay(struct clock *c, struct timespec req, struct timestamp rx,
 		      Integer64 correction);
 
+/**
+ * Provide the estimated peer delay from a slave port.
+ * @param c           The clock instance.
+ * @param ppd         The peer delay as measured on a slave port.
+ */
+void clock_peer_delay(struct clock *c, tmv_t ppd);
+
 /**
  * Poll for events and dispatch them.
  * @param c A pointer to a clock instance obtained with clock_create().