ts2phc: rename "slave clocks" to "PPS sinks"

The ts2phc program will introduce clock synchronization which is
orthogonal to the direction in which PPS is emitted (from the master
to the slave).

To have a more consistent terminology, we can avoid using the
ultra-generic term "slave" and replace it with "PPS sink", which
describes the role of the data structure in the new interpretation of
the program in a much clearer way.

Signed-off-by: Vladimir Oltean <[email protected]>

ts2phc.c

@@ -21,7 +21,7 @@ struct interface {
 
 static void ts2phc_cleanup(struct config *cfg, struct ts2phc_master *master)
 {
-	ts2phc_slave_cleanup();
+	ts2phc_pps_sink_cleanup();
 	if (master) {
 		ts2phc_master_destroy(master);
 	}
@@ -55,7 +55,7 @@ static void usage(char *progname)
 
 int main(int argc, char *argv[])
 {
-	int c, err = 0, have_slave = 0, index, print_level;
+	int c, err = 0, have_sink = 0, index, print_level;
 	struct ts2phc_master *master = NULL;
 	enum ts2phc_master_type pps_type;
 	char *config = NULL, *progname;
@@ -87,11 +87,11 @@ int main(int argc, char *argv[])
 			break;
 		case 'c':
 			if (!config_create_interface(optarg, cfg)) {
-				fprintf(stderr, "failed to add slave\n");
+				fprintf(stderr, "failed to add PPS sink\n");
 				ts2phc_cleanup(cfg, master);
 				return -1;
 			}
-			have_slave = 1;
+			have_sink = 1;
 			break;
 		case 'f':
 			config = optarg;
@@ -156,16 +156,16 @@ int main(int argc, char *argv[])
 			}
 			pps_source = interface_name(iface);
 		} else {
-			if (ts2phc_slave_add(cfg, interface_name(iface))) {
-				fprintf(stderr, "failed to add slave\n");
+			if (ts2phc_pps_sink_add(cfg, interface_name(iface))) {
+				fprintf(stderr, "failed to add PPS sink\n");
 				ts2phc_cleanup(cfg, master);
 				return -1;
 			}
-			have_slave = 1;
+			have_sink = 1;
 		}
 	}
-	if (!have_slave) {
-		fprintf(stderr, "no slave clocks specified\n");
+	if (!have_sink) {
+		fprintf(stderr, "no PPS sinks specified\n");
 		ts2phc_cleanup(cfg, master);
 		usage(progname);
 		return -1;
@@ -176,8 +176,8 @@ int main(int argc, char *argv[])
 		usage(progname);
 		return -1;
 	}
-	if (ts2phc_slave_arm()) {
-		fprintf(stderr, "failed to arm slaves\n");
+	if (ts2phc_pps_sink_arm()) {
+		fprintf(stderr, "failed to arm PPS sinks\n");
 		ts2phc_cleanup(cfg, master);
 		return -1;
 	}
@@ -197,7 +197,7 @@ int main(int argc, char *argv[])
 	}
 
 	while (is_running()) {
-		err = ts2phc_slave_poll(master);
+		err = ts2phc_pps_sink_poll(master);
 		if (err) {
 			pr_err("poll failed");
 			break;