security: fix return types in documentation

[ upstream commit 3139b95 ]

Enhance returned values description for rte_security_session_destroy
and some other minor description changes.

Fixes: c261d14 ("security: introduce security API and framework")

Signed-off-by: Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>
Acked-by: Anoob Joseph <anoobj@marvell.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>

lib/librte_security/rte_security.h

@@ -342,7 +342,7 @@ rte_security_session_create(struct rte_security_ctx *instance,
  * @param   conf	update configuration parameters
  * @return
  *  - On success returns 0
- *  - On failure return errno
+ *  - On failure returns a negative errno value.
  */
 int __rte_experimental
 rte_security_session_update(struct rte_security_ctx *instance,
@@ -366,12 +366,14 @@ rte_security_session_get_size(struct rte_security_ctx *instance);
  * return it to its original mempool.
  *
  * @param   instance	security instance
- * @param   sess	security session to freed
+ * @param   sess	security session to be freed
  *
  * @return
  *  - 0 if successful.
- *  - -EINVAL if session is NULL.
+ *  - -EINVAL if session or context instance is NULL.
  *  - -EBUSY if not all device private data has been freed.
+ *  - -ENOTSUP if destroying private data is not supported.
+ *  - other negative values in case of freeing private data errors.
  */
 int
 rte_security_session_destroy(struct rte_security_ctx *instance,