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39 #include <rte_common.h>
41 #include <rte_cycles.h>
43 #include "rte_meter.h"
45 #ifndef RTE_METER_TB_PERIOD_MIN
46 #define RTE_METER_TB_PERIOD_MIN 100
50 rte_meter_get_tb_params(uint64_t hz, uint64_t rate, uint64_t *tb_period, uint64_t *tb_bytes_per_period)
52 double period = ((double) hz) / ((double) rate);
54 if (period >= RTE_METER_TB_PERIOD_MIN) {
55 *tb_bytes_per_period = 1;
56 *tb_period = (uint64_t) period;
58 *tb_bytes_per_period = (uint64_t) ceil(RTE_METER_TB_PERIOD_MIN / period);
59 *tb_period = (hz * (*tb_bytes_per_period)) / rate;
64 rte_meter_srtcm_config(struct rte_meter_srtcm *m, struct rte_meter_srtcm_params *params)
68 /* Check input parameters */
69 if ((m == NULL) || (params == NULL)) {
73 if ((params->cir == 0) || ((params->cbs == 0) && (params->ebs == 0))) {
77 /* Initialize srTCM run-time structure */
78 hz = rte_get_tsc_hz();
79 m->time = rte_get_tsc_cycles();
80 m->tc = m->cbs = params->cbs;
81 m->te = m->ebs = params->ebs;
82 rte_meter_get_tb_params(hz, params->cir, &m->cir_period, &m->cir_bytes_per_period);
84 RTE_LOG(INFO, METER, "Low level srTCM config: \n"
85 "\tCIR period = %" PRIu64 ", CIR bytes per period = %" PRIu64 "\n",
86 m->cir_period, m->cir_bytes_per_period);
92 rte_meter_trtcm_config(struct rte_meter_trtcm *m, struct rte_meter_trtcm_params *params)
96 /* Check input parameters */
97 if ((m == NULL) || (params == NULL)) {
101 if ((params->cir == 0) || (params->pir == 0) || (params->pir < params->cir) ||
102 (params->cbs == 0) || (params->pbs == 0)) {
106 /* Initialize trTCM run-time structure */
107 hz = rte_get_tsc_hz();
108 m->time_tc = m->time_tp = rte_get_tsc_cycles();
109 m->tc = m->cbs = params->cbs;
110 m->tp = m->pbs = params->pbs;
111 rte_meter_get_tb_params(hz, params->cir, &m->cir_period, &m->cir_bytes_per_period);
112 rte_meter_get_tb_params(hz, params->pir, &m->pir_period, &m->pir_bytes_per_period);
114 RTE_LOG(INFO, METER, "Low level trTCM config: \n"
115 "\tCIR period = %" PRIu64 ", CIR bytes per period = %" PRIu64 "\n"
116 "\tPIR period = %" PRIu64 ", PIR bytes per period = %" PRIu64 "\n",
117 m->cir_period, m->cir_bytes_per_period,
118 m->pir_period, m->pir_bytes_per_period);