(Logical change 1.3)

[mirror_iproute2.git] / tc / m_estimator.c

diff --git a/tc/m_estimator.c b/tc/m_estimator.c
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0f9808e5be6d76a4c3d50cd60c6e34eadef21ddb 100644 (file)
--- a/tc/m_estimator.c
+++ b/tc/m_estimator.c
@@ -0,0 +1,64 @@
+/*
+ * m_estimator.c       Parse/print estimator module options.
+ *
+ *             This program is free software; you can u32istribute it and/or
+ *             modify it under the terms of the GNU General Public License
+ *             as published by the Free Software Foundation; either version
+ *             2 of the License, or (at your option) any later version.
+ *
+ * Authors:    Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.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"
+
+static void est_help(void) __attribute__((noreturn));
+
+static void est_help(void)
+{
+       fprintf(stderr, "Usage: ... estimator INTERVAL TIME-CONST\n");
+       fprintf(stderr, "  INTERVAL is interval between measurements\n");
+       fprintf(stderr, "  TIME-CONST is averaging time constant\n");
+       fprintf(stderr, "Example: ... est 1sec 8sec\n");
+       exit(-1);
+}
+
+int parse_estimator(int *p_argc, char ***p_argv, struct tc_estimator *est)
+{
+       int argc = *p_argc;
+       char **argv = *p_argv;
+       unsigned A, time_const;
+       
+       NEXT_ARG();
+       if (est->ewma_log)
+               duparg("estimator", *argv);
+       if (matches(*argv, "help") == 0)
+               est_help();
+       if (get_usecs(&A, *argv))
+               invarg("estimator", "invalid estimator interval");
+       NEXT_ARG();
+       if (matches(*argv, "help") == 0)
+               est_help();
+       if (get_usecs(&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");
+               exit(-1);
+       }
+       if (show_raw)
+               fprintf(stderr, "[estimator i=%u e=%u]\n", est->interval, est->ewma_log);
+       *p_argc = argc;
+       *p_argv = argv;
+       return 0;
+}