doc: announce change in crypto adapter metadata

In crypto adapter metadata, first 8 bytes of request info is a space
holder for response info. For better clarity, reserved field should be
removed from request info. New space for response info can be made by
changing type of event crypto metadata to structure from union.

Signed-off-by: Shijith Thotton <sthotton@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>
Acked-by: Ray Kinsella <mdr@ashroe.eu>
Acked-by: Jerin Jacob <jerinj@marvell.com>

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 800d81cbffb6433af212b48865b48e6d2263399e..4e8ce42e7cc4b74ea1f48bb8325bafc762200185 100644 (file)
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -193,6 +193,12 @@ Deprecation Notices
   values to the function ``rte_event_eth_rx_adapter_queue_add`` using
   the structure ``rte_event_eth_rx_adapter_queue_add``.
 
+* eventdev: Reserved bytes of ``rte_event_crypto_request`` is a space holder
+  for ``response_info``. Both should be decoupled for better clarity.
+  New space for ``response_info`` can be made by changing
+  ``rte_event_crypto_metadata`` type to structure from union.
+  This change is targeted for DPDK 21.11.
+
 * metrics: The function ``rte_metrics_init`` will have a non-void return
   in order to notify errors instead of calling ``rte_exit``.