case MLX5_METADATA_FDB:
                switch (config->dv_xmeta_en) {
                case MLX5_XMETA_MODE_LEGACY:
-                       return REG_NONE;
+                       return REG_NON;
                case MLX5_XMETA_MODE_META16:
                        return REG_C_0;
                case MLX5_XMETA_MODE_META32:
        case MLX5_FLOW_MARK:
                switch (config->dv_xmeta_en) {
                case MLX5_XMETA_MODE_LEGACY:
-                       return REG_NONE;
+                       return REG_NON;
                case MLX5_XMETA_MODE_META16:
                        return REG_C_1;
                case MLX5_XMETA_MODE_META32:
                        return priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
                               REG_C_3;
        case MLX5_MTR_COLOR:
-               MLX5_ASSERT(priv->mtr_color_reg != REG_NONE);
+               MLX5_ASSERT(priv->mtr_color_reg != REG_NON);
                return priv->mtr_color_reg;
        case MLX5_COPY_MARK:
                /*
                        return rte_flow_error_set(error, EINVAL,
                                                  RTE_FLOW_ERROR_TYPE_ITEM,
                                                  NULL, "invalid tag id");
-               if (config->flow_mreg_c[id + start_reg - REG_C_0] == REG_NONE)
+               if (config->flow_mreg_c[id + start_reg - REG_C_0] == REG_NON)
                        return rte_flow_error_set(error, ENOTSUP,
                                                  RTE_FLOW_ERROR_TYPE_ITEM,
                                                  NULL, "unsupported tag id");
                                                       RTE_FLOW_ERROR_TYPE_ITEM,
                                                        NULL, "invalid tag id");
                        if (config->flow_mreg_c
-                           [id + 1 + start_reg - REG_C_0] != REG_NONE)
+                           [id + 1 + start_reg - REG_C_0] != REG_NON)
                                return config->flow_mreg_c
                                               [id + 1 + start_reg - REG_C_0];
                        return rte_flow_error_set(error, ENOTSUP,
         * - reg_c's are preserved across different domain (FDB and NIC) on
         *   packet loopback by flow lookup miss.
         */
-       return config->flow_mreg_c[2] != REG_NONE;
+       return config->flow_mreg_c[2] != REG_NON;
 }
 
 /**
        };
        struct mlx5_flow_action_copy_mreg cp_mreg = {
                .dst = REG_B,
-               .src = REG_NONE,
+               .src = REG_NON,
        };
        struct rte_flow_action_jump jump = {
                .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
        actions_rx++;
        set_tag = (void *)actions_rx;
        set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_RX, 0, NULL);
-       MLX5_ASSERT(set_tag->id > REG_NONE);
+       MLX5_ASSERT(set_tag->id > REG_NON);
        set_tag->data = *flow_id;
        tag_action->conf = set_tag;
        /* Create Tx item list. */
        tag_item = (void *)addr;
        tag_item->data = *flow_id;
        tag_item->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_TX, 0, NULL);
-       MLX5_ASSERT(set_tag->id > REG_NONE);
+       MLX5_ASSERT(set_tag->id > REG_NON);
        item->spec = tag_item;
        addr += sizeof(struct mlx5_rte_flow_item_tag);
        tag_item = (void *)addr;
                /* Internal PMD action to set register. */
                struct mlx5_rte_flow_item_tag q_tag_spec = {
                        .data = qrss_id,
-                       .id = REG_NONE,
+                       .id = REG_NON,
                };
                struct rte_flow_item q_items[] = {
                        {
                flow_list_destroy(dev, NULL, flow_idx);
        }
        for (; n < MLX5_MREG_C_NUM; ++n)
-               config->flow_mreg_c[n] = REG_NONE;
+               config->flow_mreg_c[n] = REG_NON;
        return 0;
 }
 
 
 }
 
 static enum mlx5_modification_field reg_to_field[] = {
-       [REG_NONE] = MLX5_MODI_OUT_NONE,
+       [REG_NON] = MLX5_MODI_OUT_NONE,
        [REG_A] = MLX5_MODI_META_DATA_REG_A,
        [REG_B] = MLX5_MODI_META_DATA_REG_B,
        [REG_C_0] = MLX5_MODI_META_REG_C_0,
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "too many items to modify");
-       MLX5_ASSERT(conf->id != REG_NONE);
+       MLX5_ASSERT(conf->id != REG_NON);
        MLX5_ASSERT(conf->id < RTE_DIM(reg_to_field));
        actions[i] = (struct mlx5_modification_cmd) {
                .action_type = MLX5_MODIFICATION_TYPE_SET,
        ret = mlx5_flow_get_reg_id(dev, MLX5_APP_TAG, conf->index, error);
        if (ret < 0)
                return ret;
-       MLX5_ASSERT(ret != REG_NONE);
+       MLX5_ASSERT(ret != REG_NON);
        MLX5_ASSERT((unsigned int)ret < RTE_DIM(reg_to_field));
        reg_type = reg_to_field[ret];
        MLX5_ASSERT(reg_type > 0);
        ret = mlx5_flow_get_reg_id(dev, MLX5_APP_TAG, spec->index, error);
        if (ret < 0)
                return ret;
-       MLX5_ASSERT(ret != REG_NONE);
+       MLX5_ASSERT(ret != REG_NON);
        return 0;
 }