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38 #include <rte_common.h>
40 #include <rte_cycles.h>
42 #include "rte_meter.h"
44 #ifndef RTE_METER_TB_PERIOD_MIN
45 #define RTE_METER_TB_PERIOD_MIN 100
49 rte_meter_get_tb_params(uint64_t hz, uint64_t rate, uint64_t *tb_period, uint64_t *tb_bytes_per_period)
51 double period = ((double) hz) / ((double) rate);
53 if (period >= RTE_METER_TB_PERIOD_MIN) {
54 *tb_bytes_per_period = 1;
55 *tb_period = (uint64_t) period;
57 *tb_bytes_per_period = (uint64_t) ceil(RTE_METER_TB_PERIOD_MIN / period);
58 *tb_period = (hz * (*tb_bytes_per_period)) / rate;
63 rte_meter_srtcm_config(struct rte_meter_srtcm *m, struct rte_meter_srtcm_params *params)
67 /* Check input parameters */
68 if ((m == NULL) || (params == NULL)) {
72 if ((params->cir == 0) || ((params->cbs == 0) && (params->ebs == 0))) {
76 /* Initialize srTCM run-time structure */
77 hz = rte_get_tsc_hz();
78 m->time = rte_get_tsc_cycles();
79 m->tc = m->cbs = params->cbs;
80 m->te = m->ebs = params->ebs;
81 rte_meter_get_tb_params(hz, params->cir, &m->cir_period, &m->cir_bytes_per_period);
83 RTE_LOG(INFO, METER, "Low level srTCM config: \n"
84 "\tCIR period = %" PRIu64 ", CIR bytes per period = %" PRIu64 "\n",
85 m->cir_period, m->cir_bytes_per_period);
91 rte_meter_trtcm_config(struct rte_meter_trtcm *m, struct rte_meter_trtcm_params *params)
95 /* Check input parameters */
96 if ((m == NULL) || (params == NULL)) {
100 if ((params->cir == 0) || (params->pir == 0) || (params->pir < params->cir) ||
101 (params->cbs == 0) || (params->pbs == 0)) {
105 /* Initialize trTCM run-time structure */
106 hz = rte_get_tsc_hz();
107 m->time_tc = m->time_tp = rte_get_tsc_cycles();
108 m->tc = m->cbs = params->cbs;
109 m->tp = m->pbs = params->pbs;
110 rte_meter_get_tb_params(hz, params->cir, &m->cir_period, &m->cir_bytes_per_period);
111 rte_meter_get_tb_params(hz, params->pir, &m->pir_period, &m->pir_bytes_per_period);
113 RTE_LOG(INFO, METER, "Low level trTCM config: \n"
114 "\tCIR period = %" PRIu64 ", CIR bytes per period = %" PRIu64 "\n"
115 "\tPIR period = %" PRIu64 ", PIR bytes per period = %" PRIu64 "\n",
116 m->cir_period, m->cir_bytes_per_period,
117 m->pir_period, m->pir_bytes_per_period);