+
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
* Traffic metering algorithms:
* 1. Single Rate Three Color Marker (srTCM): defined by IETF RFC 2697
* 2. Two Rate Three Color Marker (trTCM): defined by IETF RFC 2698
+ * 3. Two Rate Three Color Marker (trTCM): defined by IETF RFC 4115
*
***/
#include <stdint.h>
+#include "rte_compat.h"
+
/*
* Application Programmer's Interface (API)
*
RTE_COLORS /**< Number of colors */
};
-/* New rte_color is defined and used to deprecate rte_meter_color soon. */
-#define rte_meter_color rte_color
-#define e_RTE_METER_GREEN RTE_COLOR_GREEN
-#define e_RTE_METER_YELLOW RTE_COLOR_YELLOW
-#define e_RTE_METER_RED RTE_COLOR_RED
-#define e_RTE_METER_COLORS RTE_COLORS
-
/** srTCM parameters per metered traffic flow. The CIR, CBS and EBS parameters only
count bytes of IP packets and do not include link specific headers. At least one of
the CBS or EBS parameters has to be greater than zero. */
struct rte_meter_trtcm_params {
uint64_t cir; /**< Committed Information Rate (CIR). Measured in bytes per second. */
uint64_t pir; /**< Peak Information Rate (PIR). Measured in bytes per second. */
- uint64_t cbs; /**< Committed Burst Size (CBS). Measured in byes. */
+ uint64_t cbs; /**< Committed Burst Size (CBS). Measured in bytes. */
uint64_t pbs; /**< Peak Burst Size (PBS). Measured in bytes. */
};
+/** trTCM parameters per metered traffic flow. The CIR, EIR, CBS and EBS
+parameters only count bytes of IP packets and do not include link specific
+headers. The CBS and EBS need to be greater than zero if CIR and EIR are
+none-zero respectively.*/
+struct rte_meter_trtcm_rfc4115_params {
+ uint64_t cir; /**< Committed Information Rate (CIR). Measured in bytes per second. */
+ uint64_t eir; /**< Excess Information Rate (EIR). Measured in bytes per second. */
+ uint64_t cbs; /**< Committed Burst Size (CBS). Measured in bytes. */
+ uint64_t ebs; /**< Excess Burst Size (EBS). Measured in bytes. */
+};
+
/**
* Internal data structure storing the srTCM configuration profile. Typically
* shared by multiple srTCM objects.
*/
struct rte_meter_trtcm_profile;
+/**
+ * Internal data structure storing the trTCM RFC4115 configuration profile.
+ * Typically shared by multiple trTCM objects.
+ */
+struct rte_meter_trtcm_rfc4115_profile;
+
/** Internal data structure storing the srTCM run-time context per metered traffic flow. */
struct rte_meter_srtcm;
/** Internal data structure storing the trTCM run-time context per metered traffic flow. */
struct rte_meter_trtcm;
+/**
+ * Internal data structure storing the trTCM RFC4115 run-time context per
+ * metered traffic flow.
+ */
+struct rte_meter_trtcm_rfc4115;
+
/**
* srTCM profile configuration
*
int
rte_meter_trtcm_profile_config(struct rte_meter_trtcm_profile *p,
struct rte_meter_trtcm_params *params);
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * trTCM RFC 4115 profile configuration
+ *
+ * @param p
+ * Pointer to pre-allocated trTCM profile data structure
+ * @param params
+ * trTCM profile parameters
+ * @return
+ * 0 upon success, error code otherwise
+ */
+__rte_experimental
+int
+rte_meter_trtcm_rfc4115_profile_config(
+ struct rte_meter_trtcm_rfc4115_profile *p,
+ struct rte_meter_trtcm_rfc4115_params *params);
/**
* srTCM configuration per metered traffic flow
rte_meter_trtcm_config(struct rte_meter_trtcm *m,
struct rte_meter_trtcm_profile *p);
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * trTCM RFC 4115 configuration per metered traffic flow
+ *
+ * @param m
+ * Pointer to pre-allocated trTCM data structure
+ * @param p
+ * trTCM profile. Needs to be valid.
+ * @return
+ * 0 upon success, error code otherwise
+ */
+__rte_experimental
+int
+rte_meter_trtcm_rfc4115_config(struct rte_meter_trtcm_rfc4115 *m,
+ struct rte_meter_trtcm_rfc4115_profile *p);
+
/**
* srTCM color blind traffic metering
*
* @return
* Color assigned to the current IP packet
*/
-static inline enum rte_meter_color
+static inline enum rte_color
rte_meter_srtcm_color_blind_check(struct rte_meter_srtcm *m,
struct rte_meter_srtcm_profile *p,
uint64_t time,
* @return
* Color assigned to the current IP packet
*/
-static inline enum rte_meter_color
+static inline enum rte_color
rte_meter_srtcm_color_aware_check(struct rte_meter_srtcm *m,
struct rte_meter_srtcm_profile *p,
uint64_t time,
uint32_t pkt_len,
- enum rte_meter_color pkt_color);
+ enum rte_color pkt_color);
/**
* trTCM color blind traffic metering
* @return
* Color assigned to the current IP packet
*/
-static inline enum rte_meter_color
+static inline enum rte_color
rte_meter_trtcm_color_blind_check(struct rte_meter_trtcm *m,
struct rte_meter_trtcm_profile *p,
uint64_t time,
* @return
* Color assigned to the current IP packet
*/
-static inline enum rte_meter_color
+static inline enum rte_color
rte_meter_trtcm_color_aware_check(struct rte_meter_trtcm *m,
struct rte_meter_trtcm_profile *p,
uint64_t time,
uint32_t pkt_len,
- enum rte_meter_color pkt_color);
+ enum rte_color pkt_color);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * trTCM RFC4115 color blind traffic metering
+ *
+ * @param m
+ * Handle to trTCM instance
+ * @param p
+ * trTCM profile specified at trTCM object creation time
+ * @param time
+ * Current CPU time stamp (measured in CPU cycles)
+ * @param pkt_len
+ * Length of the current IP packet (measured in bytes)
+ * @return
+ * Color assigned to the current IP packet
+ */
+__rte_experimental
+static inline enum rte_color
+rte_meter_trtcm_rfc4115_color_blind_check(
+ struct rte_meter_trtcm_rfc4115 *m,
+ struct rte_meter_trtcm_rfc4115_profile *p,
+ uint64_t time,
+ uint32_t pkt_len);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * trTCM RFC4115 color aware traffic metering
+ *
+ * @param m
+ * Handle to trTCM instance
+ * @param p
+ * trTCM profile specified at trTCM object creation time
+ * @param time
+ * Current CPU time stamp (measured in CPU cycles)
+ * @param pkt_len
+ * Length of the current IP packet (measured in bytes)
+ * @param pkt_color
+ * Input color of the current IP packet
+ * @return
+ * Color assigned to the current IP packet
+ */
+__rte_experimental
+static inline enum rte_color
+rte_meter_trtcm_rfc4115_color_aware_check(
+ struct rte_meter_trtcm_rfc4115 *m,
+ struct rte_meter_trtcm_rfc4115_profile *p,
+ uint64_t time,
+ uint32_t pkt_len,
+ enum rte_color pkt_color);
/*
* Inline implementation of run-time methods
uint64_t time_tc;
/**< Time of latest update of C token bucket */
uint64_t time_tp;
- /**< Time of latest update of E token bucket */
+ /**< Time of latest update of P token bucket */
uint64_t tc;
/**< Number of bytes currently available in committed(C) token bucket */
uint64_t tp;
/**< Number of bytes currently available in the peak(P) token bucket */
};
-static inline enum rte_meter_color
+struct rte_meter_trtcm_rfc4115_profile {
+ uint64_t cbs;
+ /**< Upper limit for C token bucket */
+ uint64_t ebs;
+ /**< Upper limit for E token bucket */
+ uint64_t cir_period;
+ /**< Number of CPU cycles for one update of C token bucket */
+ uint64_t cir_bytes_per_period;
+ /**< Number of bytes to add to C token bucket on each update */
+ uint64_t eir_period;
+ /**< Number of CPU cycles for one update of E token bucket */
+ uint64_t eir_bytes_per_period;
+ /**< Number of bytes to add to E token bucket on each update */
+};
+
+/**
+ * Internal data structure storing the trTCM RFC4115 run-time context per
+ * metered traffic flow.
+ */
+struct rte_meter_trtcm_rfc4115 {
+ uint64_t time_tc;
+ /**< Time of latest update of C token bucket */
+ uint64_t time_te;
+ /**< Time of latest update of E token bucket */
+ uint64_t tc;
+ /**< Number of bytes currently available in committed(C) token bucket */
+ uint64_t te;
+ /**< Number of bytes currently available in the excess(E) token bucket */
+};
+
+static inline enum rte_color
rte_meter_srtcm_color_blind_check(struct rte_meter_srtcm *m,
struct rte_meter_srtcm_profile *p,
uint64_t time,
if (tc >= pkt_len) {
m->tc = tc - pkt_len;
m->te = te;
- return e_RTE_METER_GREEN;
+ return RTE_COLOR_GREEN;
}
if (te >= pkt_len) {
m->tc = tc;
m->te = te - pkt_len;
- return e_RTE_METER_YELLOW;
+ return RTE_COLOR_YELLOW;
}
m->tc = tc;
m->te = te;
- return e_RTE_METER_RED;
+ return RTE_COLOR_RED;
}
-static inline enum rte_meter_color
+static inline enum rte_color
rte_meter_srtcm_color_aware_check(struct rte_meter_srtcm *m,
struct rte_meter_srtcm_profile *p,
uint64_t time,
uint32_t pkt_len,
- enum rte_meter_color pkt_color)
+ enum rte_color pkt_color)
{
uint64_t time_diff, n_periods, tc, te;
}
/* Color logic */
- if ((pkt_color == e_RTE_METER_GREEN) && (tc >= pkt_len)) {
+ if ((pkt_color == RTE_COLOR_GREEN) && (tc >= pkt_len)) {
m->tc = tc - pkt_len;
m->te = te;
- return e_RTE_METER_GREEN;
+ return RTE_COLOR_GREEN;
}
- if ((pkt_color != e_RTE_METER_RED) && (te >= pkt_len)) {
+ if ((pkt_color != RTE_COLOR_RED) && (te >= pkt_len)) {
m->tc = tc;
m->te = te - pkt_len;
- return e_RTE_METER_YELLOW;
+ return RTE_COLOR_YELLOW;
}
m->tc = tc;
m->te = te;
- return e_RTE_METER_RED;
+ return RTE_COLOR_RED;
}
-static inline enum rte_meter_color
+static inline enum rte_color
rte_meter_trtcm_color_blind_check(struct rte_meter_trtcm *m,
struct rte_meter_trtcm_profile *p,
uint64_t time,
if (tp < pkt_len) {
m->tc = tc;
m->tp = tp;
- return e_RTE_METER_RED;
+ return RTE_COLOR_RED;
}
if (tc < pkt_len) {
m->tc = tc;
m->tp = tp - pkt_len;
- return e_RTE_METER_YELLOW;
+ return RTE_COLOR_YELLOW;
}
m->tc = tc - pkt_len;
m->tp = tp - pkt_len;
- return e_RTE_METER_GREEN;
+ return RTE_COLOR_GREEN;
}
-static inline enum rte_meter_color
+static inline enum rte_color
rte_meter_trtcm_color_aware_check(struct rte_meter_trtcm *m,
struct rte_meter_trtcm_profile *p,
uint64_t time,
uint32_t pkt_len,
- enum rte_meter_color pkt_color)
+ enum rte_color pkt_color)
{
uint64_t time_diff_tc, time_diff_tp, n_periods_tc, n_periods_tp, tc, tp;
tp = p->pbs;
/* Color logic */
- if ((pkt_color == e_RTE_METER_RED) || (tp < pkt_len)) {
+ if ((pkt_color == RTE_COLOR_RED) || (tp < pkt_len)) {
m->tc = tc;
m->tp = tp;
- return e_RTE_METER_RED;
+ return RTE_COLOR_RED;
}
- if ((pkt_color == e_RTE_METER_YELLOW) || (tc < pkt_len)) {
+ if ((pkt_color == RTE_COLOR_YELLOW) || (tc < pkt_len)) {
m->tc = tc;
m->tp = tp - pkt_len;
- return e_RTE_METER_YELLOW;
+ return RTE_COLOR_YELLOW;
}
m->tc = tc - pkt_len;
m->tp = tp - pkt_len;
- return e_RTE_METER_GREEN;
+ return RTE_COLOR_GREEN;
}
+__rte_experimental
+static inline enum rte_color
+rte_meter_trtcm_rfc4115_color_blind_check(
+ struct rte_meter_trtcm_rfc4115 *m,
+ struct rte_meter_trtcm_rfc4115_profile *p,
+ uint64_t time,
+ uint32_t pkt_len)
+{
+ uint64_t time_diff_tc, time_diff_te, n_periods_tc, n_periods_te, tc, te;
+
+ /* Bucket update */
+ time_diff_tc = time - m->time_tc;
+ time_diff_te = time - m->time_te;
+ n_periods_tc = time_diff_tc / p->cir_period;
+ n_periods_te = time_diff_te / p->eir_period;
+ m->time_tc += n_periods_tc * p->cir_period;
+ m->time_te += n_periods_te * p->eir_period;
+
+ tc = m->tc + n_periods_tc * p->cir_bytes_per_period;
+ if (tc > p->cbs)
+ tc = p->cbs;
+
+ te = m->te + n_periods_te * p->eir_bytes_per_period;
+ if (te > p->ebs)
+ te = p->ebs;
+
+ /* Color logic */
+ if (tc >= pkt_len) {
+ m->tc = tc - pkt_len;
+ m->te = te;
+ return RTE_COLOR_GREEN;
+ }
+ if (te >= pkt_len) {
+ m->tc = tc;
+ m->te = te - pkt_len;
+ return RTE_COLOR_YELLOW;
+ }
+
+ /* If we end up here the color is RED */
+ m->tc = tc;
+ m->te = te;
+ return RTE_COLOR_RED;
+}
+
+__rte_experimental
+static inline enum rte_color
+rte_meter_trtcm_rfc4115_color_aware_check(
+ struct rte_meter_trtcm_rfc4115 *m,
+ struct rte_meter_trtcm_rfc4115_profile *p,
+ uint64_t time,
+ uint32_t pkt_len,
+ enum rte_color pkt_color)
+{
+ uint64_t time_diff_tc, time_diff_te, n_periods_tc, n_periods_te, tc, te;
+
+ /* Bucket update */
+ time_diff_tc = time - m->time_tc;
+ time_diff_te = time - m->time_te;
+ n_periods_tc = time_diff_tc / p->cir_period;
+ n_periods_te = time_diff_te / p->eir_period;
+ m->time_tc += n_periods_tc * p->cir_period;
+ m->time_te += n_periods_te * p->eir_period;
+
+ tc = m->tc + n_periods_tc * p->cir_bytes_per_period;
+ if (tc > p->cbs)
+ tc = p->cbs;
+
+ te = m->te + n_periods_te * p->eir_bytes_per_period;
+ if (te > p->ebs)
+ te = p->ebs;
+
+ /* Color logic */
+ if ((pkt_color == RTE_COLOR_GREEN) && (tc >= pkt_len)) {
+ m->tc = tc - pkt_len;
+ m->te = te;
+ return RTE_COLOR_GREEN;
+ }
+
+ if ((pkt_color != RTE_COLOR_RED) && (te >= pkt_len)) {
+ m->tc = tc;
+ m->te = te - pkt_len;
+ return RTE_COLOR_YELLOW;
+ }
+
+ /* If we end up here the color is RED */
+ m->tc = tc;
+ m->te = te;
+ return RTE_COLOR_RED;
+}
+
+
#ifdef __cplusplus
}
#endif
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