1 files changed, 59 insertions, 0 deletions
diff --git a/tc/m_estimator.c b/tc/m_estimator.c
new file mode 100644
index 0000000..98fc5e7
--- /dev/null
+++ b/tc/m_estimator.c
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * m_estimator.c	Parse/print estimator module options.
+ *
+ * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+
+#include "utils.h"
+#include "tc_util.h"
+#include "tc_common.h"
+
+static void est_help(void);
+
+static void est_help(void)
+{
+	fprintf(stderr,
+		"Usage: ... estimator INTERVAL TIME-CONST\n"
+		"  INTERVAL is interval between measurements\n"
+		"  TIME-CONST is averaging time constant\n"
+		"Example: ... est 1sec 8sec\n");
+}
+
+int parse_estimator(int *p_argc, char ***p_argv, struct tc_estimator *est)
+{
+	int argc = *p_argc;
+	char **argv = *p_argv;
+	unsigned int A, time_const;
+
+	NEXT_ARG();
+	if (est->ewma_log)
+		duparg("estimator", *argv);
+	if (matches(*argv, "help") == 0)
+		est_help();
+	if (get_time(&A, *argv))
+		invarg("estimator", "invalid estimator interval");
+	NEXT_ARG();
+	if (matches(*argv, "help") == 0)
+		est_help();
+	if (get_time(&time_const, *argv))
+		invarg("estimator", "invalid estimator time constant");
+	if (tc_setup_estimator(A, time_const, est) < 0) {
+		fprintf(stderr, "Error: estimator parameters are out of range.\n");
+		return -1;
+	}
+	if (show_raw)
+		fprintf(stderr, "[estimator i=%hhd e=%u]\n", est->interval, est->ewma_log);
+	*p_argc = argc;
+	*p_argv = argv;
+	return 0;
+}