X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_metrics%2Frte_metrics.h;h=fbe64ddf2b47fc23cb4ba37ec6f189bb46d9f0d2;hb=e0512833d4acc6d037fa0ce8d453584618b98019;hp=0fa3104ec4d786eb0f222bd8a68bf06834664262;hpb=38accc1edfe57a96f8d52043f738007eace67dd5;p=dpdk.git

diff --git a/lib/librte_metrics/rte_metrics.h b/lib/librte_metrics/rte_metrics.h
index 0fa3104ec4..fbe64ddf2b 100644
--- a/lib/librte_metrics/rte_metrics.h
+++ b/lib/librte_metrics/rte_metrics.h
@@ -1,34 +1,5 @@
-/*-
- *   BSD LICENSE
- *
- *   Copyright(c) 2017 Intel Corporation. All rights reserved.
- *   All rights reserved.
- *
- *   Redistribution and use in source and binary forms, with or without
- *   modification, are permitted provided that the following conditions
- *   are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in
- *       the documentation and/or other materials provided with the
- *       distribution.
- *     * Neither the name of Intel Corporation nor the names of its
- *       contributors may be used to endorse or promote products derived
- *       from this software without specific prior written permission.
- *
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2017 Intel Corporation
  */
 
 /**
@@ -53,13 +24,17 @@
 #define _RTE_METRICS_H_
 
 #include <stdint.h>
+#include <rte_compat.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+extern int metrics_initialized;
+
 /** Maximum length of metric name (including null-terminator) */
 #define RTE_METRICS_MAX_NAME_LEN 64
+#define RTE_METRICS_MAX_METRICS 256
 
 /**
  * Global metric special id.
@@ -71,7 +46,6 @@ extern "C" {
  */
 #define RTE_METRICS_GLOBAL -1
 
-
 /**
  * A name-key lookup for metrics.
  *
@@ -99,7 +73,6 @@ struct rte_metric_value {
 	uint64_t value;
 };
 
-
 /**
  * Initializes metric module. This function must be called from
  * a primary process before metrics are used.
@@ -109,6 +82,23 @@ struct rte_metric_value {
  */
 void rte_metrics_init(int socket_id);
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Deinitialize metric module. This function must be called from
+ * a primary process after all the metrics usage is over, to
+ *  release the shared memory.
+ *
+ * @return
+ *  -EINVAL - invalid parameter.
+ *  -EIO: Error, unable to access metrics shared memory
+ *    (rte_metrics_init() not called)
+ *  0 - success
+ */
+__rte_experimental
+int rte_metrics_deinit(void);
+
 /**
  * Register a metric, making it available as a reporting parameter.
  *
@@ -118,7 +108,8 @@ void rte_metrics_init(int socket_id);
  * is required for updating said metric's value.
  *
  * @param name
- *   Metric name
+ *   Metric name. If this exceeds RTE_METRICS_MAX_NAME_LEN (including
+ *   the NULL terminator), it is truncated.
  *
  * @return
  *  - Zero or positive: Success (index key of new metric)