[dpdk-dev] [PATCH] doc: announce API changes in crypto library

[Tomasz Kulasek <tomaszx.kulasek@intel.com>]

API changes are planned for 17.08 to made sessions agnostic to the
underlaying devices, removing coupling with crypto PMDs, so a single
session can be used on multiple devices.

It requires to change "struct rte_cryptodev_sym_session" to store more
than one private data for devices, as well as remove redundant dev_id
and dev_type.

Effected public functions:

 - rte_cryptodev_sym_session_pool_create
 - rte_cryptodev_sym_session_create
 - rte_cryptodev_sym_session_free

While session will not be directly associated with device, followed API
will be changed adding uint8_t dev_id to the argument list:

 - rte_cryptodev_queue_pair_attach_sym_session
 - rte_cryptodev_queue_pair_detach_sym_session

Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
---

Detailed list of changes and scope of work is sent in the separate RFC:
http://dpdk.org/dev/patchwork/patch/24091/ ("[dpdk-dev,RFC] cryptodev:
make crypto session device independent")

 doc/guides/rel_notes/deprecation.rst | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index a3e7c72..5527c20 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -81,3 +81,24 @@ Deprecation Notices
 
   - ``rte_crpytodev_scheduler_mode_get``, replaced by ``rte_cryptodev_scheduler_mode_get``
   - ``rte_crpytodev_scheduler_mode_set``, replaced by ``rte_cryptodev_scheduler_mode_set``
+
+* cryptodev: API changes are planned for 17.08 for the sessions management
+  to make it agnostic to the underlying devices, removing coupling with
+  crypto PMDs, so a single session can be used on multiple devices.
+
+  - ``struct rte_cryptodev_sym_session``, dev_id, dev_type will be removed,
+    _private field changed to the indirect array of private data pointers of
+    all supported devices
+
+  An API of followed functions will be changed to allow operate on multiple
+  devices with one session:
+
+  - ``rte_cryptodev_sym_session_create``
+  - ``rte_cryptodev_sym_session_free``
+  - ``rte_cryptodev_sym_session_pool_create``
+
+  While dev_id will not be stored in the ``struct rte_cryptodev_sym_session``,
+  directly, the change of followed API is required:
+
+  - ``rte_cryptodev_queue_pair_attach_sym_session``
+  - ``rte_cryptodev_queue_pair_detach_sym_session``
\ No newline at end of file
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1.9.1