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authorC.J. Collier <cjcollier@linuxfoundation.org>2016-06-14 07:50:17 -0700
committerC.J. Collier <cjcollier@linuxfoundation.org>2016-06-14 12:17:54 -0700
commit97f17497d162afdb82c8704bf097f0fee3724b2e (patch)
tree1c6269614c0c15ffef8451c58ae8f8b30a1bc804 /lib/librte_meter/rte_meter.c
parente04be89c2409570e0055b2cda60bd11395bb93b0 (diff)
Imported Upstream version 16.04
Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757 Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>
Diffstat (limited to 'lib/librte_meter/rte_meter.c')
-rw-r--r--lib/librte_meter/rte_meter.c120
1 files changed, 120 insertions, 0 deletions
diff --git a/lib/librte_meter/rte_meter.c b/lib/librte_meter/rte_meter.c
new file mode 100644
index 00000000..5e2dadb8
--- /dev/null
+++ b/lib/librte_meter/rte_meter.c
@@ -0,0 +1,120 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <math.h>
+
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_cycles.h>
+
+#include "rte_meter.h"
+
+#ifndef RTE_METER_TB_PERIOD_MIN
+#define RTE_METER_TB_PERIOD_MIN 100
+#endif
+
+static void
+rte_meter_get_tb_params(uint64_t hz, uint64_t rate, uint64_t *tb_period, uint64_t *tb_bytes_per_period)
+{
+ double period = ((double) hz) / ((double) rate);
+
+ if (period >= RTE_METER_TB_PERIOD_MIN) {
+ *tb_bytes_per_period = 1;
+ *tb_period = (uint64_t) period;
+ } else {
+ *tb_bytes_per_period = (uint64_t) ceil(RTE_METER_TB_PERIOD_MIN / period);
+ *tb_period = (hz * (*tb_bytes_per_period)) / rate;
+ }
+}
+
+int
+rte_meter_srtcm_config(struct rte_meter_srtcm *m, struct rte_meter_srtcm_params *params)
+{
+ uint64_t hz;
+
+ /* Check input parameters */
+ if ((m == NULL) || (params == NULL)) {
+ return -1;
+ }
+
+ if ((params->cir == 0) || ((params->cbs == 0) && (params->ebs == 0))) {
+ return -2;
+ }
+
+ /* Initialize srTCM run-time structure */
+ hz = rte_get_tsc_hz();
+ m->time = rte_get_tsc_cycles();
+ m->tc = m->cbs = params->cbs;
+ m->te = m->ebs = params->ebs;
+ rte_meter_get_tb_params(hz, params->cir, &m->cir_period, &m->cir_bytes_per_period);
+
+ RTE_LOG(INFO, METER, "Low level srTCM config: \n"
+ "\tCIR period = %" PRIu64 ", CIR bytes per period = %" PRIu64 "\n",
+ m->cir_period, m->cir_bytes_per_period);
+
+ return 0;
+}
+
+int
+rte_meter_trtcm_config(struct rte_meter_trtcm *m, struct rte_meter_trtcm_params *params)
+{
+ uint64_t hz;
+
+ /* Check input parameters */
+ if ((m == NULL) || (params == NULL)) {
+ return -1;
+ }
+
+ if ((params->cir == 0) || (params->pir == 0) || (params->pir < params->cir) ||
+ (params->cbs == 0) || (params->pbs == 0)) {
+ return -2;
+ }
+
+ /* Initialize trTCM run-time structure */
+ hz = rte_get_tsc_hz();
+ m->time_tc = m->time_tp = rte_get_tsc_cycles();
+ m->tc = m->cbs = params->cbs;
+ m->tp = m->pbs = params->pbs;
+ rte_meter_get_tb_params(hz, params->cir, &m->cir_period, &m->cir_bytes_per_period);
+ rte_meter_get_tb_params(hz, params->pir, &m->pir_period, &m->pir_bytes_per_period);
+
+ RTE_LOG(INFO, METER, "Low level trTCM config: \n"
+ "\tCIR period = %" PRIu64 ", CIR bytes per period = %" PRIu64 "\n"
+ "\tPIR period = %" PRIu64 ", PIR bytes per period = %" PRIu64 "\n",
+ m->cir_period, m->cir_bytes_per_period,
+ m->pir_period, m->pir_bytes_per_period);
+
+ return 0;
+}