Add support for displaying the schema data model with '-d' option

src/main.c

@@ -119,11 +119,11 @@ int cleanup()
 
 int main(int argc, char **argv)
 {
-	int ch;
-        int log_level = 7;
+	int ch, dm_type = 0;
+	int log_level = 7;
 	struct bbfdm_context bbfdm_ctx = {0};
 
-	while ((ch = getopt(argc, argv, "l:q:")) != -1) {
+	while ((ch = getopt(argc, argv, "dl:q:")) != -1) {
 		switch (ch) {
 		case 'l':
 			if (optarg) {
@@ -133,6 +133,9 @@ int main(int argc, char **argv)
 			if (log_level < 0 || log_level > 7)
 				log_level = 7;
 			break;
+		case 'd':
+			dm_type++;
+			break;
 		case 'q':
 			int num_of_q = get_no_of_q_per_port(argv[argc-1]);
 			printf("%d", num_of_q);
@@ -142,10 +145,15 @@ int main(int argc, char **argv)
 		}
 	}
 
-        memset(&bbfdm_ctx, 0, sizeof(struct bbfdm_context));
-        bbfdm_ubus_set_service_name(&bbfdm_ctx, "qosmngr");
-        bbfdm_ubus_set_log_level(log_level);
-        bbfdm_ubus_load_data_model(tDynamicObj);
+	memset(&bbfdm_ctx, 0, sizeof(struct bbfdm_context));
+	bbfdm_ubus_set_service_name(&bbfdm_ctx, "qosmngr");
+	bbfdm_ubus_set_log_level(log_level);
+	bbfdm_ubus_load_data_model(tDynamicObj);
+
+	if (dm_type > 0) {
+		int res = bbfdm_print_data_model_schema(&bbfdm_ctx, dm_type);
+		exit(res);
+	}
 
 	openlog("qosmngr", LOG_PID|LOG_CONS, LOG_LOCAL1);