-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2013 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.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
*/
#ifndef __INCLUDE_RTE_METER_H__
* Handle to srTCM instance
* @param time
* Current CPU time stamp (measured in CPU cycles)
- * @param pkt_length
+ * @param pkt_len
* Length of the current IP packet (measured in bytes)
* @return
* Color assigned to the current IP packet
* Handle to srTCM instance
* @param time
* Current CPU time stamp (measured in CPU cycles)
- * @param pkt_length
+ * @param pkt_len
* Length of the current IP packet (measured in bytes)
* @param pkt_color
* Input color of the current IP packet
static inline enum rte_meter_color
rte_meter_srtcm_color_aware_check(struct rte_meter_srtcm *m,
uint64_t time,
- uint32_t pkt_len,
+ uint32_t pkt_len,
enum rte_meter_color pkt_color);
/**
* Handle to trTCM instance
* @param time
* Current CPU time stamp (measured in CPU cycles)
- * @param pkt_length
+ * @param pkt_len
* Length of the current IP packet (measured in bytes)
* @return
* Color assigned to the current IP packet
* Handle to trTCM instance
* @param time
* Current CPU time stamp (measured in CPU cycles)
- * @param pkt_length
+ * @param pkt_len
* Length of the current IP packet (measured in bytes)
* @param pkt_color
* Input color of the current IP packet
* Inline implementation of run-time methods
*
***/
-
+
/* Internal data structure storing the srTCM run-time context per metered traffic flow. */
struct rte_meter_srtcm {
uint64_t time; /* Time of latest update of C and E token buckets */
};
static inline enum rte_meter_color
-rte_meter_srtcm_color_blind_check(struct rte_meter_srtcm *m,
+rte_meter_srtcm_color_blind_check(struct rte_meter_srtcm *m,
uint64_t time,
uint32_t pkt_len)
{
uint64_t time_diff, n_periods, tc, te;
-
+
/* Bucket update */
time_diff = time - m->time;
n_periods = time_diff / m->cir_period;
m->time += n_periods * m->cir_period;
-
+
+ /* Put the tokens overflowing from tc into te bucket */
tc = m->tc + n_periods * m->cir_bytes_per_period;
- if (tc > m->cbs)
+ te = m->te;
+ if (tc > m->cbs) {
+ te += (tc - m->cbs);
+ if (te > m->ebs)
+ te = m->ebs;
tc = m->cbs;
-
- te = m->te + n_periods * m->cir_bytes_per_period;
- if (te > m->ebs)
- te = m->ebs;
-
+ }
+
/* Color logic */
if (tc >= pkt_len) {
m->tc = tc - pkt_len;
m->te = te;
return e_RTE_METER_GREEN;
}
-
+
if (te >= pkt_len) {
m->tc = tc;
m->te = te - pkt_len;
return e_RTE_METER_YELLOW;
}
-
+
m->tc = tc;
m->te = te;
return e_RTE_METER_RED;
static inline enum rte_meter_color
rte_meter_srtcm_color_aware_check(struct rte_meter_srtcm *m,
uint64_t time,
- uint32_t pkt_len,
+ uint32_t pkt_len,
enum rte_meter_color pkt_color)
{
uint64_t time_diff, n_periods, tc, te;
-
+
/* Bucket update */
time_diff = time - m->time;
n_periods = time_diff / m->cir_period;
m->time += n_periods * m->cir_period;
-
+
+ /* Put the tokens overflowing from tc into te bucket */
tc = m->tc + n_periods * m->cir_bytes_per_period;
- if (tc > m->cbs)
+ te = m->te;
+ if (tc > m->cbs) {
+ te += (tc - m->cbs);
+ if (te > m->ebs)
+ te = m->ebs;
tc = m->cbs;
-
- te = m->te + n_periods * m->cir_bytes_per_period;
- if (te > m->ebs)
- te = m->ebs;
-
+ }
+
/* Color logic */
if ((pkt_color == e_RTE_METER_GREEN) && (tc >= pkt_len)) {
m->tc = tc - pkt_len;
m->te = te;
return e_RTE_METER_GREEN;
}
-
+
if ((pkt_color != e_RTE_METER_RED) && (te >= pkt_len)) {
m->tc = tc;
m->te = te - pkt_len;
return e_RTE_METER_YELLOW;
}
-
+
m->tc = tc;
m->te = te;
return e_RTE_METER_RED;
uint32_t pkt_len)
{
uint64_t time_diff_tc, time_diff_tp, n_periods_tc, n_periods_tp, tc, tp;
-
+
/* Bucket update */
time_diff_tc = time - m->time_tc;
time_diff_tp = time - m->time_tp;
n_periods_tp = time_diff_tp / m->pir_period;
m->time_tc += n_periods_tc * m->cir_period;
m->time_tp += n_periods_tp * m->pir_period;
-
+
tc = m->tc + n_periods_tc * m->cir_bytes_per_period;
if (tc > m->cbs)
tc = m->cbs;
-
+
tp = m->tp + n_periods_tp * m->pir_bytes_per_period;
if (tp > m->pbs)
tp = m->pbs;
-
+
/* Color logic */
if (tp < pkt_len) {
m->tc = tc;
m->tp = tp;
return e_RTE_METER_RED;
}
-
+
if (tc < pkt_len) {
m->tc = tc;
m->tp = tp - pkt_len;
return e_RTE_METER_YELLOW;
}
-
+
m->tc = tc - pkt_len;
m->tp = tp - pkt_len;
return e_RTE_METER_GREEN;
static inline enum rte_meter_color
rte_meter_trtcm_color_aware_check(struct rte_meter_trtcm *m,
uint64_t time,
- uint32_t pkt_len,
+ uint32_t pkt_len,
enum rte_meter_color pkt_color)
{
uint64_t time_diff_tc, time_diff_tp, n_periods_tc, n_periods_tp, tc, tp;
-
+
/* Bucket update */
time_diff_tc = time - m->time_tc;
time_diff_tp = time - m->time_tp;
n_periods_tp = time_diff_tp / m->pir_period;
m->time_tc += n_periods_tc * m->cir_period;
m->time_tp += n_periods_tp * m->pir_period;
-
+
tc = m->tc + n_periods_tc * m->cir_bytes_per_period;
if (tc > m->cbs)
tc = m->cbs;
-
+
tp = m->tp + n_periods_tp * m->pir_bytes_per_period;
if (tp > m->pbs)
tp = m->pbs;
-
+
/* Color logic */
if ((pkt_color == e_RTE_METER_RED) || (tp < pkt_len)) {
m->tc = tc;
m->tp = tp;
return e_RTE_METER_RED;
}
-
+
if ((pkt_color == e_RTE_METER_YELLOW) || (tc < pkt_len)) {
m->tc = tc;
m->tp = tp - pkt_len;
return e_RTE_METER_YELLOW;
}
-
+
m->tc = tc - pkt_len;
m->tp = tp - pkt_len;
return e_RTE_METER_GREEN;
git.droids-corp.org / dpdk.git / blobdiff