// SPDX-License-Identifier: BSD-3-Clause /* * Copyright 2018 Mellanox Technologies, Ltd */ #include #include #include #include #include #include #include #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->transfer ? fm->mfts->transfer.tbl->obj : fm->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 supported"); 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 supported"); /* Check input params. */ ret = mlx5_flow_meter_profile_validate(dev, meter_profile_id, profile, error); if (ret) return ret; /* Meter profile memory allocation. */ fmp = mlx5_malloc(MLX5_MEM_ZERO, sizeof(struct mlx5_flow_meter_profile), RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY); 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: mlx5_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 supported"); /* 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 is 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 is in use."); /* Remove from list. */ TAILQ_REMOVE(&priv->flow_meter_profiles, fmp, next); mlx5_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; uint32_t idx = 0; if (!priv->mtr_en) return -rte_mtr_error_set(error, ENOTSUP, RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL, "Meter is not supported"); /* 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 = mlx5_ipool_zmalloc(priv->sh->ipool[MLX5_IPOOL_MTR], &idx); if (fm == NULL) return -rte_mtr_error_set(error, ENOMEM, RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL, "Memory alloc failed for meter."); fm->idx = idx; /* Fill the flow meter parameters. */ fm->meter_id = meter_id; fm->profile = fmp; memcpy(fm->action, params->action, sizeof(params->action)); fm->stats_mask = params->stats_mask; /* 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++; rte_spinlock_init(&fm->sl); 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]); mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_MTR], idx); 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 supported"); /* 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); mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_MTR], fm->idx); 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 supported"); /* 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 supported"); /* 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 supported"); /* 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 supported"); /* 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 supported"); /* 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->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; int ret = 0; 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"); return fm; } rte_spinlock_lock(&fm->sl); if (fm->mfts->meter_action) { if (fm->shared && attr->transfer == fm->transfer && attr->ingress == fm->ingress && attr->egress == fm->egress) fm->ref_cnt++; else ret = -1; } else { fm->ingress = attr->ingress; fm->egress = attr->egress; fm->transfer = attr->transfer; fm->ref_cnt = 1; /* This also creates the meter object. */ fm->mfts->meter_action = mlx5_flow_meter_action_create(priv, fm); if (!fm->mfts->meter_action) { fm->ref_cnt = 0; fm->ingress = 0; fm->egress = 0; fm->transfer = 0; ret = -1; DRV_LOG(ERR, "Meter action create failed."); } } rte_spinlock_unlock(&fm->sl); if (ret) rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, fm->mfts->meter_action ? "Meter attr not match" : "Meter action create failed"); return ret ? NULL : fm; } /** * Detach meter from flow. * * @param [in] fm * Pointer to flow meter. */ void mlx5_flow_meter_detach(struct mlx5_flow_meter *fm) { #ifdef HAVE_MLX5_DR_CREATE_ACTION_FLOW_METER rte_spinlock_lock(&fm->sl); MLX5_ASSERT(fm->ref_cnt); if (--fm->ref_cnt == 0) { mlx5_glue->destroy_flow_action(fm->mfts->meter_action); fm->mfts->meter_action = NULL; fm->ingress = 0; fm->egress = 0; fm->transfer = 0; } rte_spinlock_unlock(&fm->sl); #else (void)fm; #endif } /** * 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); mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_MTR], fm->idx); } 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); mlx5_free(fmp); } return 0; }