net/mlx5: validate meter profile

The add meter profile should be validated if it is valid or has been add
to the list. Invalid and exist profile should not be add to the list.

Signed-off-by: Suanming Mou <suanmingm@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>

diff --git a/drivers/net/mlx5/mlx5_flow_meter.c b/drivers/net/mlx5/mlx5_flow_meter.c
index b11962f..5ad5e14 100644 (file)
--- a/drivers/net/mlx5/mlx5_flow_meter.c
+++ b/drivers/net/mlx5/mlx5_flow_meter.c
@@ -34,6 +34,71 @@ mlx5_flow_meter_profile_find(struct mlx5_priv *priv, uint32_t meter_profile_id)
        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.
  *
@@ -226,6 +291,11 @@ mlx5_flow_meter_profile_add(struct rte_eth_dev *dev,
                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);

diff --git a/drivers/net/mlx5/mlx5_prm.h b/drivers/net/mlx5/mlx5_prm.h
index a0c37c8..3ebf191 100644 (file)
--- a/drivers/net/mlx5/mlx5_prm.h
+++ b/drivers/net/mlx5/mlx5_prm.h
@@ -1768,6 +1768,11 @@ struct mlx5_mini_cqe8 {
        uint32_t byte_cnt;
 };
 
+/* Maximum value of srTCM metering parameters. */
+#define MLX5_SRTCM_CBS_MAX (0xFF * (1ULL << 0x1F))
+#define MLX5_SRTCM_CIR_MAX (8 * (1ULL << 30) * 0xFF)
+#define MLX5_SRTCM_EBS_MAX 0
+
 /**
  * Convert a user mark to flow mark.
  *