numam-dpdk/drivers/net/mlx5/mlx5_flow_meter.c

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// SPDX-License-Identifier: BSD-3-Clause
/*
* Copyright 2018 Mellanox Technologies, Ltd
*/
#include <math.h>
#include <rte_tailq.h>
#include <rte_malloc.h>
#include <rte_mtr.h>
#include <rte_mtr_driver.h>
#include <mlx5_devx_cmds.h>
#include "mlx5.h"
#include "mlx5_flow.h"
/**
* Create the meter action.
*
* @param priv
* Pointer to mlx5_priv.
* @param[in] fm
* Pointer to flow meter to be converted.
*
* @return
* Pointer to the meter action on success, NULL otherwise.
*/
static void *
mlx5_flow_meter_action_create(struct mlx5_priv *priv,
struct mlx5_flow_meter *fm)
{
#ifdef HAVE_MLX5_DR_CREATE_ACTION_FLOW_METER
struct mlx5dv_dr_flow_meter_attr mtr_init;
void *attr = fm->mfts->fmp;
struct mlx5_flow_meter_srtcm_rfc2697_prm *srtcm =
&fm->profile->srtcm_prm;
fm->mfts->fmp_size = MLX5_ST_SZ_BYTES(flow_meter_parameters);
memset(attr, 0, fm->mfts->fmp_size);
MLX5_SET(flow_meter_parameters, attr, valid, 1);
MLX5_SET(flow_meter_parameters, attr, bucket_overflow, 1);
MLX5_SET(flow_meter_parameters, attr,
start_color, MLX5_FLOW_COLOR_GREEN);
MLX5_SET(flow_meter_parameters, attr, both_buckets_on_green, 0);
MLX5_SET(flow_meter_parameters,
attr, cbs_exponent, srtcm->cbs_exponent);
MLX5_SET(flow_meter_parameters,
attr, cbs_mantissa, srtcm->cbs_mantissa);
MLX5_SET(flow_meter_parameters,
attr, cir_exponent, srtcm->cir_exponent);
MLX5_SET(flow_meter_parameters,
attr, cir_mantissa, srtcm->cir_mantissa);
MLX5_SET(flow_meter_parameters,
attr, ebs_exponent, srtcm->ebs_exponent);
MLX5_SET(flow_meter_parameters,
attr, ebs_mantissa, srtcm->ebs_mantissa);
mtr_init.next_table =
fm->attr.transfer ? fm->mfts->transfer.tbl->obj :
fm->attr.egress ? fm->mfts->egress.tbl->obj :
fm->mfts->ingress.tbl->obj;
mtr_init.reg_c_index = priv->mtr_color_reg - REG_C_0;
mtr_init.flow_meter_parameter = fm->mfts->fmp;
mtr_init.flow_meter_parameter_sz = fm->mfts->fmp_size;
mtr_init.active = fm->active_state;
return mlx5_glue->dv_create_flow_action_meter(&mtr_init);
#else
(void)priv;
(void)fm;
return NULL;
#endif
}
/**
* Find meter profile by id.
*
* @param priv
* Pointer to mlx5_priv.
* @param meter_profile_id
* Meter profile id.
*
* @return
* Pointer to the profile found on success, NULL otherwise.
*/
static struct mlx5_flow_meter_profile *
mlx5_flow_meter_profile_find(struct mlx5_priv *priv, uint32_t meter_profile_id)
{
struct mlx5_mtr_profiles *fmps = &priv->flow_meter_profiles;
struct mlx5_flow_meter_profile *fmp;
TAILQ_FOREACH(fmp, fmps, next)
if (meter_profile_id == fmp->meter_profile_id)
return fmp;
return NULL;
}
/**
* Validate the MTR profile.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] meter_profile_id
* Meter profile id.
* @param[in] profile
* Pointer to meter profile detail.
* @param[out] error
* Pointer to the error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_meter_profile_validate(struct rte_eth_dev *dev,
uint32_t meter_profile_id,
struct rte_mtr_meter_profile *profile,
struct rte_mtr_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_flow_meter_profile *fmp;
/* Profile must not be NULL. */
if (profile == NULL)
return -rte_mtr_error_set(error, EINVAL,
RTE_MTR_ERROR_TYPE_METER_PROFILE,
NULL, "Meter profile is null.");
/* Meter profile ID must be valid. */
if (meter_profile_id == UINT32_MAX)
return -rte_mtr_error_set(error, EINVAL,
RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
NULL, "Meter profile id not valid.");
/* Meter profile must not exist. */
fmp = mlx5_flow_meter_profile_find(priv, meter_profile_id);
if (fmp)
return -rte_mtr_error_set(error, EEXIST,
RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
NULL,
"Meter profile already exists.");
if (profile->alg == RTE_MTR_SRTCM_RFC2697) {
if (priv->config.hca_attr.qos.srtcm_sup) {
/* Verify support for flow meter parameters. */
if (profile->srtcm_rfc2697.cir > 0 &&
profile->srtcm_rfc2697.cir <= MLX5_SRTCM_CIR_MAX &&
profile->srtcm_rfc2697.cbs > 0 &&
profile->srtcm_rfc2697.cbs <= MLX5_SRTCM_CBS_MAX &&
profile->srtcm_rfc2697.ebs <= MLX5_SRTCM_EBS_MAX)
return 0;
else
return -rte_mtr_error_set
(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_MTR_PARAMS,
NULL,
profile->srtcm_rfc2697.ebs ?
"Metering value ebs must be 0." :
"Invalid metering parameters.");
}
}
return -rte_mtr_error_set(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_METER_PROFILE,
NULL, "Metering algorithm not supported.");
}
/**
* Calculate mantissa and exponent for cir.
*
* @param[in] cir
* Value to be calculated.
* @param[out] man
* Pointer to the mantissa.
* @param[out] exp
* Pointer to the exp.
*/
static void
mlx5_flow_meter_cir_man_exp_calc(int64_t cir, uint8_t *man, uint8_t *exp)
{
int64_t _cir;
int64_t delta = INT64_MAX;
uint8_t _man = 0;
uint8_t _exp = 0;
uint64_t m, e;
for (m = 0; m <= 0xFF; m++) { /* man width 8 bit */
for (e = 0; e <= 0x1F; e++) { /* exp width 5bit */
_cir = (1000000000ULL * m) >> e;
if (llabs(cir - _cir) <= delta) {
delta = llabs(cir - _cir);
_man = m;
_exp = e;
}
}
}
*man = _man;
*exp = _exp;
}
/**
* Calculate mantissa and exponent for xbs.
*
* @param[in] xbs
* Value to be calculated.
* @param[out] man
* Pointer to the mantissa.
* @param[out] exp
* Pointer to the exp.
*/
static void
mlx5_flow_meter_xbs_man_exp_calc(uint64_t xbs, uint8_t *man, uint8_t *exp)
{
int _exp;
double _man;
/* Special case xbs == 0 ? both exp and matissa are 0. */
if (xbs == 0) {
*man = 0;
*exp = 0;
return;
}
/* xbs = xbs_mantissa * 2^xbs_exponent */
_man = frexp(xbs, &_exp);
_man = _man * pow(2, MLX5_MAN_WIDTH);
_exp = _exp - MLX5_MAN_WIDTH;
*man = (uint8_t)ceil(_man);
*exp = _exp;
}
/**
* Fill the prm meter parameter.
*
* @param[in,out] fmp
* Pointer to meter profie to be converted.
* @param[out] error
* Pointer to the error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_meter_param_fill(struct mlx5_flow_meter_profile *fmp,
struct rte_mtr_error *error)
{
struct mlx5_flow_meter_srtcm_rfc2697_prm *srtcm = &fmp->srtcm_prm;
uint8_t man, exp;
if (fmp->profile.alg != RTE_MTR_SRTCM_RFC2697)
return -rte_mtr_error_set(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_METER_PROFILE,
NULL, "Metering algorithm not supported.");
/* cbs = cbs_mantissa * 2^cbs_exponent */
mlx5_flow_meter_xbs_man_exp_calc(fmp->profile.srtcm_rfc2697.cbs,
&man, &exp);
srtcm->cbs_mantissa = man;
srtcm->cbs_exponent = exp;
/* Check if cbs mantissa is too large. */
if (srtcm->cbs_exponent != exp)
return -rte_mtr_error_set(error, EINVAL,
RTE_MTR_ERROR_TYPE_MTR_PARAMS, NULL,
"Metering profile parameter cbs is"
" invalid.");
/* ebs = ebs_mantissa * 2^ebs_exponent */
mlx5_flow_meter_xbs_man_exp_calc(fmp->profile.srtcm_rfc2697.ebs,
&man, &exp);
srtcm->ebs_mantissa = man;
srtcm->ebs_exponent = exp;
/* Check if ebs mantissa is too large. */
if (srtcm->ebs_exponent != exp)
return -rte_mtr_error_set(error, EINVAL,
RTE_MTR_ERROR_TYPE_MTR_PARAMS, NULL,
"Metering profile parameter ebs is"
" invalid.");
/* cir = 8G * cir_mantissa * 1/(2^cir_exponent)) Bytes/Sec */
mlx5_flow_meter_cir_man_exp_calc(fmp->profile.srtcm_rfc2697.cir,
&man, &exp);
srtcm->cir_mantissa = man;
srtcm->cir_exponent = exp;
/* Check if cir mantissa is too large. */
if (srtcm->cir_exponent != exp)
return -rte_mtr_error_set(error, EINVAL,
RTE_MTR_ERROR_TYPE_MTR_PARAMS, NULL,
"Metering profile parameter cir is"
" invalid.");
return 0;
}
/**
* Callback to get MTR capabilities.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[out] cap
* Pointer to save MTR capabilities.
* @param[out] error
* Pointer to the error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_mtr_cap_get(struct rte_eth_dev *dev,
struct rte_mtr_capabilities *cap,
struct rte_mtr_error *error __rte_unused)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_hca_qos_attr *qattr = &priv->config.hca_attr.qos;
if (!priv->mtr_en)
return -rte_mtr_error_set(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
"Meter is not support");
memset(cap, 0, sizeof(*cap));
cap->n_max = 1 << qattr->log_max_flow_meter;
cap->n_shared_max = cap->n_max;
cap->identical = 1;
cap->shared_identical = 1;
cap->shared_n_flows_per_mtr_max = 4 << 20;
/* 2M flows can share the same meter. */
cap->chaining_n_mtrs_per_flow_max = 1; /* Chaining is not supported. */
cap->meter_srtcm_rfc2697_n_max = qattr->srtcm_sup ? cap->n_max : 0;
cap->meter_rate_max = 1ULL << 40; /* 1 Tera tokens per sec. */
cap->policer_action_drop_supported = 1;
cap->stats_mask = RTE_MTR_STATS_N_BYTES_DROPPED |
RTE_MTR_STATS_N_PKTS_DROPPED;
return 0;
}
/**
* Callback to add MTR profile.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] meter_profile_id
* Meter profile id.
* @param[in] profile
* Pointer to meter profile detail.
* @param[out] error
* Pointer to the error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_meter_profile_add(struct rte_eth_dev *dev,
uint32_t meter_profile_id,
struct rte_mtr_meter_profile *profile,
struct rte_mtr_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_mtr_profiles *fmps = &priv->flow_meter_profiles;
struct mlx5_flow_meter_profile *fmp;
int ret;
if (!priv->mtr_en)
return -rte_mtr_error_set(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
"Meter is not support");
/* Check input params. */
ret = mlx5_flow_meter_profile_validate(dev, meter_profile_id,
profile, error);
if (ret)
return ret;
/* Meter profile memory allocation. */
fmp = rte_calloc(__func__, 1, sizeof(struct mlx5_flow_meter_profile),
RTE_CACHE_LINE_SIZE);
if (fmp == NULL)
return -rte_mtr_error_set(error, ENOMEM,
RTE_MTR_ERROR_TYPE_UNSPECIFIED,
NULL, "Meter profile memory "
"alloc failed.");
/* Fill profile info. */
fmp->meter_profile_id = meter_profile_id;
fmp->profile = *profile;
/* Fill the flow meter parameters for the PRM. */
ret = mlx5_flow_meter_param_fill(fmp, error);
if (ret)
goto error;
/* Add to list. */
TAILQ_INSERT_TAIL(fmps, fmp, next);
return 0;
error:
rte_free(fmp);
return ret;
}
/**
* Callback to delete MTR profile.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] meter_profile_id
* Meter profile id.
* @param[out] error
* Pointer to the error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_meter_profile_delete(struct rte_eth_dev *dev,
uint32_t meter_profile_id,
struct rte_mtr_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_flow_meter_profile *fmp;
if (!priv->mtr_en)
return -rte_mtr_error_set(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
"Meter is not support");
/* Meter profile must exist. */
fmp = mlx5_flow_meter_profile_find(priv, meter_profile_id);
if (fmp == NULL)
return -rte_mtr_error_set(error, ENOENT,
RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
&meter_profile_id,
"Meter profile id invalid.");
/* Check profile is unused. */
if (fmp->ref_cnt)
return -rte_mtr_error_set(error, EBUSY,
RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
NULL, "Meter profile in use.");
/* Remove from list. */
TAILQ_REMOVE(&priv->flow_meter_profiles, fmp, next);
rte_free(fmp);
return 0;
}
/**
* Convert wrong color setting action to verbose error.
*
* @param[in] action
* Policy color action.
*
* @return
* Verbose meter color error type.
*/
static inline enum rte_mtr_error_type
action2error(enum rte_mtr_policer_action action)
{
switch (action) {
case MTR_POLICER_ACTION_COLOR_GREEN:
return RTE_MTR_ERROR_TYPE_POLICER_ACTION_GREEN;
case MTR_POLICER_ACTION_COLOR_YELLOW:
return RTE_MTR_ERROR_TYPE_POLICER_ACTION_YELLOW;
case MTR_POLICER_ACTION_COLOR_RED:
return RTE_MTR_ERROR_TYPE_POLICER_ACTION_RED;
default:
break;
}
return RTE_MTR_ERROR_TYPE_UNSPECIFIED;
}
/**
* Check meter validation.
*
* @param[in] priv
* Pointer to mlx5 private data structure.
* @param[in] meter_id
* Meter id.
* @param[in] params
* Pointer to rte meter parameters.
* @param[out] error
* Pointer to rte meter error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_meter_validate(struct mlx5_priv *priv, uint32_t meter_id,
struct rte_mtr_params *params,
struct rte_mtr_error *error)
{
static enum rte_mtr_policer_action
valid_recol_action[RTE_COLORS] = {
MTR_POLICER_ACTION_COLOR_GREEN,
MTR_POLICER_ACTION_COLOR_YELLOW,
MTR_POLICER_ACTION_COLOR_RED };
int i;
/* Meter params must not be NULL. */
if (params == NULL)
return -rte_mtr_error_set(error, EINVAL,
RTE_MTR_ERROR_TYPE_MTR_PARAMS,
NULL, "Meter object params null.");
/* Previous meter color is not supported. */
if (params->use_prev_mtr_color)
return -rte_mtr_error_set(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_MTR_PARAMS,
NULL,
"Previous meter color "
"not supported.");
/* Validate policer settings. */
for (i = 0; i < RTE_COLORS; i++)
if (params->action[i] != valid_recol_action[i] &&
params->action[i] != MTR_POLICER_ACTION_DROP)
return -rte_mtr_error_set
(error, ENOTSUP,
action2error(params->action[i]), NULL,
"Recolor action not supported.");
/* Validate meter id. */
if (mlx5_flow_meter_find(priv, meter_id))
return -rte_mtr_error_set(error, EEXIST,
RTE_MTR_ERROR_TYPE_MTR_ID, NULL,
"Meter object already exists.");
return 0;
}
/**
* Modify the flow meter action.
*
* @param[in] priv
* Pointer to mlx5 private data structure.
* @param[in] fm
* Pointer to flow meter to be modified.
* @param[in] srtcm
* Pointer to meter srtcm description parameter.
* @param[in] modify_bits
* The bit in srtcm to be updated.
* @param[in] active_state
* The state to be updated.
* @return
* 0 on success, o negative value otherwise.
*/
static int
mlx5_flow_meter_action_modify(struct mlx5_priv *priv,
struct mlx5_flow_meter *fm,
const struct mlx5_flow_meter_srtcm_rfc2697_prm *srtcm,
uint64_t modify_bits, uint32_t active_state)
{
#ifdef HAVE_MLX5_DR_CREATE_ACTION_FLOW_METER
uint32_t in[MLX5_ST_SZ_DW(flow_meter_parameters)] = { 0 };
uint32_t *attr;
struct mlx5dv_dr_flow_meter_attr mod_attr = { 0 };
int ret;
/* Fill command parameters. */
mod_attr.reg_c_index = priv->mtr_color_reg - REG_C_0;
mod_attr.flow_meter_parameter = in;
mod_attr.flow_meter_parameter_sz = fm->mfts->fmp_size;
if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_ACTIVE)
mod_attr.active = !!active_state;
else
mod_attr.active = 0;
attr = in;
if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CBS) {
MLX5_SET(flow_meter_parameters,
attr, cbs_exponent, srtcm->cbs_exponent);
MLX5_SET(flow_meter_parameters,
attr, cbs_mantissa, srtcm->cbs_mantissa);
}
if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CIR) {
MLX5_SET(flow_meter_parameters,
attr, cir_exponent, srtcm->cir_exponent);
MLX5_SET(flow_meter_parameters,
attr, cir_mantissa, srtcm->cir_mantissa);
}
if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_EBS) {
MLX5_SET(flow_meter_parameters,
attr, ebs_exponent, srtcm->ebs_exponent);
MLX5_SET(flow_meter_parameters,
attr, ebs_mantissa, srtcm->ebs_mantissa);
}
/* Apply modifications to meter only if it was created. */
if (fm->mfts->meter_action) {
ret = mlx5_glue->dv_modify_flow_action_meter
(fm->mfts->meter_action, &mod_attr,
rte_cpu_to_be_64(modify_bits));
if (ret)
return ret;
}
/* Update succeedded modify meter parameters. */
if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_ACTIVE)
fm->active_state = !!active_state;
attr = fm->mfts->fmp;
if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CBS) {
MLX5_SET(flow_meter_parameters,
attr, cbs_exponent, srtcm->cbs_exponent);
MLX5_SET(flow_meter_parameters,
attr, cbs_mantissa, srtcm->cbs_mantissa);
}
if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CIR) {
MLX5_SET(flow_meter_parameters,
attr, cir_exponent, srtcm->cir_exponent);
MLX5_SET(flow_meter_parameters,
attr, cir_mantissa, srtcm->cir_mantissa);
}
if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_EBS) {
MLX5_SET(flow_meter_parameters,
attr, ebs_exponent, srtcm->ebs_exponent);
MLX5_SET(flow_meter_parameters,
attr, ebs_mantissa, srtcm->ebs_mantissa);
}
return 0;
#else
(void)priv;
(void)fm;
(void)srtcm;
(void)modify_bits;
(void)active_state;
return -ENOTSUP;
#endif
}
/**
* Create meter rules.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] meter_id
* Meter id.
* @param[in] params
* Pointer to rte meter parameters.
* @param[in] shared
* Meter shared with other flow or not.
* @param[out] error
* Pointer to rte meter error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_meter_create(struct rte_eth_dev *dev, uint32_t meter_id,
struct rte_mtr_params *params, int shared,
struct rte_mtr_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_flow_meters *fms = &priv->flow_meters;
struct mlx5_flow_meter_profile *fmp;
struct mlx5_flow_meter *fm;
const struct rte_flow_attr attr = {
.ingress = 1,
.egress = 1,
.transfer = priv->config.dv_esw_en ? 1 : 0,
};
int ret;
unsigned int i;
if (!priv->mtr_en)
return -rte_mtr_error_set(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
"Meter is not support");
/* Validate the parameters. */
ret = mlx5_flow_meter_validate(priv, meter_id, params, error);
if (ret)
return ret;
/* Meter profile must exist. */
fmp = mlx5_flow_meter_profile_find(priv, params->meter_profile_id);
if (fmp == NULL)
return -rte_mtr_error_set(error, ENOENT,
RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
NULL, "Meter profile id not valid.");
/* Allocate the flow meter memory. */
fm = rte_calloc(__func__, 1,
sizeof(struct mlx5_flow_meter), RTE_CACHE_LINE_SIZE);
if (fm == NULL)
return -rte_mtr_error_set(error, ENOMEM,
RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
"Memory alloc failed for meter.");
/* Fill the flow meter parameters. */
fm->meter_id = meter_id;
fm->profile = fmp;
fm->params = *params;
/* Alloc policer counters. */
for (i = 0; i < RTE_DIM(fm->policer_stats.cnt); i++) {
fm->policer_stats.cnt[i] = mlx5_counter_alloc(dev);
if (!fm->policer_stats.cnt[i])
goto error;
}
fm->mfts = mlx5_flow_create_mtr_tbls(dev, fm);
if (!fm->mfts)
goto error;
ret = mlx5_flow_create_policer_rules(dev, fm, &attr);
if (ret)
goto error;
/* Add to the flow meter list. */
TAILQ_INSERT_TAIL(fms, fm, next);
fm->active_state = 1; /* Config meter starts as active. */
fm->shared = !!shared;
fm->policer_stats.stats_mask = params->stats_mask;
fm->profile->ref_cnt++;
return 0;
error:
mlx5_flow_destroy_policer_rules(dev, fm, &attr);
mlx5_flow_destroy_mtr_tbls(dev, fm->mfts);
/* Free policer counters. */
for (i = 0; i < RTE_DIM(fm->policer_stats.cnt); i++)
if (fm->policer_stats.cnt[i])
mlx5_counter_free(dev, fm->policer_stats.cnt[i]);
rte_free(fm);
return -rte_mtr_error_set(error, -ret,
RTE_MTR_ERROR_TYPE_UNSPECIFIED,
NULL, "Failed to create devx meter.");
}
/**
* Destroy meter rules.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] meter_id
* Meter id.
* @param[out] error
* Pointer to rte meter error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_meter_destroy(struct rte_eth_dev *dev, uint32_t meter_id,
struct rte_mtr_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_flow_meters *fms = &priv->flow_meters;
struct mlx5_flow_meter_profile *fmp;
struct mlx5_flow_meter *fm;
const struct rte_flow_attr attr = {
.ingress = 1,
.egress = 1,
.transfer = priv->config.dv_esw_en ? 1 : 0,
};
unsigned int i;
if (!priv->mtr_en)
return -rte_mtr_error_set(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
"Meter is not support");
/* Meter object must exist. */
fm = mlx5_flow_meter_find(priv, meter_id);
if (fm == NULL)
return -rte_mtr_error_set(error, ENOENT,
RTE_MTR_ERROR_TYPE_MTR_ID,
NULL, "Meter object id not valid.");
/* Meter object must not have any owner. */
if (fm->ref_cnt > 0)
return -rte_mtr_error_set(error, EBUSY,
RTE_MTR_ERROR_TYPE_UNSPECIFIED,
NULL, "Meter object is being used.");
/* Get the meter profile. */
fmp = fm->profile;
MLX5_ASSERT(fmp);
/* Update dependencies. */
fmp->ref_cnt--;
/* Remove from the flow meter list. */
TAILQ_REMOVE(fms, fm, next);
/* Free policer counters. */
for (i = 0; i < RTE_DIM(fm->policer_stats.cnt); i++)
if (fm->policer_stats.cnt[i])
mlx5_counter_free(dev, fm->policer_stats.cnt[i]);
/* Free meter flow table */
mlx5_flow_destroy_policer_rules(dev, fm, &attr);
mlx5_flow_destroy_mtr_tbls(dev, fm->mfts);
rte_free(fm);
return 0;
}
/**
* Modify meter state.
*
* @param[in] priv
* Pointer to mlx5 private data structure.
* @param[in] fm
* Pointer to flow meter.
* @param[in] new_state
* New state to update.
* @param[out] error
* Pointer to rte meter error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_meter_modify_state(struct mlx5_priv *priv,
struct mlx5_flow_meter *fm,
uint32_t new_state,
struct rte_mtr_error *error)
{
static const struct mlx5_flow_meter_srtcm_rfc2697_prm srtcm = {
.cbs_exponent = 20,
.cbs_mantissa = 191,
.cir_exponent = 0,
.cir_mantissa = 200,
.ebs_exponent = 0,
.ebs_mantissa = 0,
};
uint64_t modify_bits = MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CBS |
MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CIR;
int ret;
if (new_state == MLX5_FLOW_METER_DISABLE)
ret = mlx5_flow_meter_action_modify(priv, fm, &srtcm,
modify_bits, 0);
else
ret = mlx5_flow_meter_action_modify(priv, fm,
&fm->profile->srtcm_prm,
modify_bits, 0);
if (ret)
return -rte_mtr_error_set(error, -ret,
RTE_MTR_ERROR_TYPE_MTR_PARAMS,
NULL,
new_state ?
"Failed to enable meter." :
"Failed to disable meter.");
return 0;
}
/**
* Callback to enable flow meter.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] meter_id
* Meter id.
* @param[out] error
* Pointer to rte meter error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_meter_enable(struct rte_eth_dev *dev,
uint32_t meter_id,
struct rte_mtr_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_flow_meter *fm;
int ret;
if (!priv->mtr_en)
return -rte_mtr_error_set(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
"Meter is not support");
/* Meter object must exist. */
fm = mlx5_flow_meter_find(priv, meter_id);
if (fm == NULL)
return -rte_mtr_error_set(error, ENOENT,
RTE_MTR_ERROR_TYPE_MTR_ID,
NULL, "Meter not found.");
if (fm->active_state == MLX5_FLOW_METER_ENABLE)
return 0;
ret = mlx5_flow_meter_modify_state(priv, fm, MLX5_FLOW_METER_ENABLE,
error);
if (!ret)
fm->active_state = MLX5_FLOW_METER_ENABLE;
return ret;
}
/**
* Callback to disable flow meter.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] meter_id
* Meter id.
* @param[out] error
* Pointer to rte meter error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_meter_disable(struct rte_eth_dev *dev,
uint32_t meter_id,
struct rte_mtr_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_flow_meter *fm;
int ret;
if (!priv->mtr_en)
return -rte_mtr_error_set(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
"Meter is not support");
/* Meter object must exist. */
fm = mlx5_flow_meter_find(priv, meter_id);
if (fm == NULL)
return -rte_mtr_error_set(error, ENOENT,
RTE_MTR_ERROR_TYPE_MTR_ID,
NULL, "Meter not found.");
if (fm->active_state == MLX5_FLOW_METER_DISABLE)
return 0;
ret = mlx5_flow_meter_modify_state(priv, fm, MLX5_FLOW_METER_DISABLE,
error);
if (!ret)
fm->active_state = MLX5_FLOW_METER_DISABLE;
return ret;
}
/**
* Callback to update meter profile.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] meter_id
* Meter id.
* @param[in] meter_profile_id
* To be updated meter profile id.
* @param[out] error
* Pointer to rte meter error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_meter_profile_update(struct rte_eth_dev *dev,
uint32_t meter_id,
uint32_t meter_profile_id,
struct rte_mtr_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_flow_meter_profile *fmp;
struct mlx5_flow_meter_profile *old_fmp;
struct mlx5_flow_meter *fm;
uint64_t modify_bits = MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CBS |
MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CIR;
int ret;
if (!priv->mtr_en)
return -rte_mtr_error_set(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
"Meter is not support");
/* Meter profile must exist. */
fmp = mlx5_flow_meter_profile_find(priv, meter_profile_id);
if (fmp == NULL)
return -rte_mtr_error_set(error, ENOENT,
RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
NULL, "Meter profile not found.");
/* Meter object must exist. */
fm = mlx5_flow_meter_find(priv, meter_id);
if (fm == NULL)
return -rte_mtr_error_set(error, ENOENT,
RTE_MTR_ERROR_TYPE_MTR_ID,
NULL, "Meter not found.");
/* MTR object already set to meter profile id. */
old_fmp = fm->profile;
if (fmp == old_fmp)
return 0;
/* Update the profile. */
fm->profile = fmp;
/* Update meter params in HW (if not disabled). */
if (fm->active_state == MLX5_FLOW_METER_DISABLE)
return 0;
ret = mlx5_flow_meter_action_modify(priv, fm, &fm->profile->srtcm_prm,
modify_bits, fm->active_state);
if (ret) {
fm->profile = old_fmp;
return -rte_mtr_error_set(error, -ret,
RTE_MTR_ERROR_TYPE_MTR_PARAMS,
NULL, "Failed to update meter"
" parmeters in hardware.");
}
old_fmp->ref_cnt--;
fmp->ref_cnt++;
return 0;
}
/**
* Callback to update meter stats mask.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] meter_id
* Meter id.
* @param[in] stats_mask
* To be updated stats_mask.
* @param[out] error
* Pointer to rte meter error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_meter_stats_update(struct rte_eth_dev *dev,
uint32_t meter_id,
uint64_t stats_mask,
struct rte_mtr_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_flow_meter *fm;
if (!priv->mtr_en)
return -rte_mtr_error_set(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
"Meter is not support");
/* Meter object must exist. */
fm = mlx5_flow_meter_find(priv, meter_id);
if (fm == NULL)
return -rte_mtr_error_set(error, ENOENT,
RTE_MTR_ERROR_TYPE_MTR_ID,
NULL, "Meter object id not valid.");
fm->policer_stats.stats_mask = stats_mask;
return 0;
}
/**
* Callback to read meter statistics.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] meter_id
* Meter id.
* @param[out] stats
* Pointer to store the statistics.
* @param[out] stats_mask
* Pointer to store the stats_mask.
* @param[in] clear
* Statistic to be cleared after read or not.
* @param[out] error
* Pointer to rte meter error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
mlx5_flow_meter_stats_read(struct rte_eth_dev *dev,
uint32_t meter_id,
struct rte_mtr_stats *stats,
uint64_t *stats_mask,
int clear,
struct rte_mtr_error *error)
{
static uint64_t meter2mask[RTE_MTR_DROPPED + 1] = {
RTE_MTR_STATS_N_PKTS_GREEN | RTE_MTR_STATS_N_BYTES_GREEN,
RTE_MTR_STATS_N_PKTS_YELLOW | RTE_MTR_STATS_N_BYTES_YELLOW,
RTE_MTR_STATS_N_PKTS_RED | RTE_MTR_STATS_N_BYTES_RED,
RTE_MTR_STATS_N_PKTS_DROPPED | RTE_MTR_STATS_N_BYTES_DROPPED
};
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_flow_meter *fm;
struct mlx5_flow_policer_stats *ps;
uint64_t pkts_dropped = 0;
uint64_t bytes_dropped = 0;
uint64_t pkts;
uint64_t bytes;
int i;
int ret = 0;
if (!priv->mtr_en)
return -rte_mtr_error_set(error, ENOTSUP,
RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
"Meter is not support");
/* Meter object must exist. */
fm = mlx5_flow_meter_find(priv, meter_id);
if (fm == NULL)
return -rte_mtr_error_set(error, ENOENT,
RTE_MTR_ERROR_TYPE_MTR_ID,
NULL, "Meter object id not valid.");
ps = &fm->policer_stats;
*stats_mask = ps->stats_mask;
for (i = 0; i < RTE_MTR_DROPPED; i++) {
if (*stats_mask & meter2mask[i]) {
ret = mlx5_counter_query(dev, ps->cnt[i], clear, &pkts,
&bytes);
if (ret)
goto error;
if (fm->params.action[i] == MTR_POLICER_ACTION_DROP) {
pkts_dropped += pkts;
bytes_dropped += bytes;
}
/* If need to read the packets, set it. */
if ((1 << i) & (*stats_mask & meter2mask[i]))
stats->n_pkts[i] = pkts;
/* If need to read the bytes, set it. */
if ((1 << (RTE_MTR_DROPPED + 1 + i)) &
(*stats_mask & meter2mask[i]))
stats->n_bytes[i] = bytes;
}
}
/* Dropped packets/bytes are treated differently. */
if (*stats_mask & meter2mask[i]) {
ret = mlx5_counter_query(dev, ps->cnt[i], clear, &pkts,
&bytes);
if (ret)
goto error;
pkts += pkts_dropped;
bytes += bytes_dropped;
/* If need to read the packets, set it. */
if ((*stats_mask & meter2mask[i]) &
RTE_MTR_STATS_N_PKTS_DROPPED)
stats->n_pkts_dropped = pkts;
/* If need to read the bytes, set it. */
if ((*stats_mask & meter2mask[i]) &
RTE_MTR_STATS_N_BYTES_DROPPED)
stats->n_bytes_dropped = bytes;
}
return 0;
error:
return -rte_mtr_error_set(error, ret, RTE_MTR_ERROR_TYPE_STATS, NULL,
"Failed to read policer counters.");
}
static const struct rte_mtr_ops mlx5_flow_mtr_ops = {
.capabilities_get = mlx5_flow_mtr_cap_get,
.meter_profile_add = mlx5_flow_meter_profile_add,
.meter_profile_delete = mlx5_flow_meter_profile_delete,
.create = mlx5_flow_meter_create,
.destroy = mlx5_flow_meter_destroy,
.meter_enable = mlx5_flow_meter_enable,
.meter_disable = mlx5_flow_meter_disable,
.meter_profile_update = mlx5_flow_meter_profile_update,
.meter_dscp_table_update = NULL,
.policer_actions_update = NULL,
.stats_update = mlx5_flow_meter_stats_update,
.stats_read = mlx5_flow_meter_stats_read,
};
/**
* Get meter operations.
*
* @param dev
* Pointer to Ethernet device structure.
* @param arg
* Pointer to set the mtr operations.
*
* @return
* Always 0.
*/
int
mlx5_flow_meter_ops_get(struct rte_eth_dev *dev __rte_unused, void *arg)
{
*(const struct rte_mtr_ops **)arg = &mlx5_flow_mtr_ops;
return 0;
}
/**
* Find meter by id.
*
* @param priv
* Pointer to mlx5_priv.
* @param meter_id
* Meter id.
*
* @return
* Pointer to the profile found on success, NULL otherwise.
*/
struct mlx5_flow_meter *
mlx5_flow_meter_find(struct mlx5_priv *priv, uint32_t meter_id)
{
struct mlx5_flow_meters *fms = &priv->flow_meters;
struct mlx5_flow_meter *fm;
TAILQ_FOREACH(fm, fms, next)
if (meter_id == fm->meter_id)
return fm;
return NULL;
}
/**
* Attach meter to flow.
* Unidirectional Meter creation can only be done
* when flow direction is known, i.e. when calling meter_attach.
*
* @param [in] priv
* Pointer to mlx5 private data.
* @param [in] meter_id
* Flow meter id.
* @param [in] attr
* Pointer to flow attributes.
* @param [out] error
* Pointer to error structure.
*
* @return the flow meter pointer, NULL otherwise.
*/
struct mlx5_flow_meter *
mlx5_flow_meter_attach(struct mlx5_priv *priv, uint32_t meter_id,
const struct rte_flow_attr *attr,
struct rte_flow_error *error)
{
struct mlx5_flow_meter *fm;
fm = mlx5_flow_meter_find(priv, meter_id);
if (fm == NULL) {
rte_flow_error_set(error, ENOENT,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
"Meter object id not valid");
goto error;
}
if (!fm->shared && fm->ref_cnt) {
DRV_LOG(ERR, "Cannot share a non-shared meter.");
rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
"Meter can't be shared");
goto error;
}
if (!fm->ref_cnt++) {
MLX5_ASSERT(!fm->mfts->meter_action);
fm->attr = *attr;
/* This also creates the meter object. */
fm->mfts->meter_action = mlx5_flow_meter_action_create(priv,
fm);
if (!fm->mfts->meter_action)
goto error_detach;
} else {
MLX5_ASSERT(fm->mfts->meter_action);
if (attr->transfer != fm->attr.transfer ||
attr->ingress != fm->attr.ingress ||
attr->egress != fm->attr.egress) {
DRV_LOG(ERR, "meter I/O attributes do not "
"match flow I/O attributes.");
goto error_detach;
}
}
return fm;
error_detach:
mlx5_flow_meter_detach(fm);
rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
fm->mfts->meter_action ? "Meter attr not match" :
"Meter action create failed");
error:
return NULL;
}
/**
* Detach meter from flow.
*
* @param [in] fm
* Pointer to flow meter.
*/
void
mlx5_flow_meter_detach(struct mlx5_flow_meter *fm)
{
const struct rte_flow_attr attr = { 0 };
MLX5_ASSERT(fm->ref_cnt);
if (--fm->ref_cnt)
return;
if (fm->mfts->meter_action)
mlx5_glue->destroy_flow_action(fm->mfts->meter_action);
fm->mfts->meter_action = NULL;
fm->attr = attr;
}
/**
* Flush meter configuration.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[out] error
* Pointer to rte meter error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_meter_flush(struct rte_eth_dev *dev, struct rte_mtr_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_flow_meters *fms = &priv->flow_meters;
struct mlx5_mtr_profiles *fmps = &priv->flow_meter_profiles;
struct mlx5_flow_meter_profile *fmp;
struct mlx5_flow_meter *fm;
const struct rte_flow_attr attr = {
.ingress = 1,
.egress = 1,
.transfer = priv->config.dv_esw_en ? 1 : 0,
};
void *tmp;
uint32_t i;
TAILQ_FOREACH_SAFE(fm, fms, next, tmp) {
/* Meter object must not have any owner. */
MLX5_ASSERT(!fm->ref_cnt);
/* Get meter profile. */
fmp = fm->profile;
if (fmp == NULL)
return -rte_mtr_error_set(error, EINVAL,
RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
NULL, "MTR object meter profile invalid.");
/* Update dependencies. */
fmp->ref_cnt--;
/* Remove from list. */
TAILQ_REMOVE(fms, fm, next);
/* Free policer counters. */
for (i = 0; i < RTE_DIM(fm->policer_stats.cnt); i++)
if (fm->policer_stats.cnt[i])
mlx5_counter_free(dev,
fm->policer_stats.cnt[i]);
/* Free meter flow table. */
mlx5_flow_destroy_policer_rules(dev, fm, &attr);
mlx5_flow_destroy_mtr_tbls(dev, fm->mfts);
rte_free(fm);
}
TAILQ_FOREACH_SAFE(fmp, fmps, next, tmp) {
/* Check unused. */
MLX5_ASSERT(!fmp->ref_cnt);
/* Remove from list. */
TAILQ_REMOVE(&priv->flow_meter_profiles, fmp, next);
rte_free(fmp);
}
return 0;
}