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author | 2016-06-14 07:54:47 -0700 | |
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committer | 2016-06-14 07:55:43 -0700 | |
commit | 5129044dce1f85ce4950f31bcf90f3886466f06a (patch) | |
tree | 1c6269614c0c15ffef8451c58ae8f8b30a1bc804 /lib/librte_meter/rte_meter.c | |
parent | e04be89c2409570e0055b2cda60bd11395bb93b0 (diff) |
Imported upstream release 16.04
* gbp import-orig ../dpdk-16.04.tar.xz
Change-Id: Iac2196db782ba322f6974d8a752acc34ce5024c3
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.c | 120 |
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; +} |