1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
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;
}
|
