[PATCH v1] doc: deprecation notice to add callback data to rte_event_fp_ops

[Sivaprasad Tummala <sivaprasad.tummala@amd.com>]

Deprecation notice to add "rte_eventdev_port_data" field to
``rte_event_fp_ops`` for callback support.

Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala@amd.com>
---
 doc/guides/rel_notes/deprecation.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index fb771a0305..057f97ce5a 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -130,6 +130,13 @@ Deprecation Notices
   ``rte_cryptodev_get_auth_algo_string``, ``rte_cryptodev_get_aead_algo_string`` and
   ``rte_cryptodev_asym_get_xform_string`` respectively.
 
+* eventdev: The struct rte_event_fp_ops will be updated with a new element
+  rte_eventdev_port_data to support optional callbacks in DPDK 23.11.
+  rte_eventdev_port_data is used to hold callbacks registered optionally
+  per event device port and associated callback data. By adding rte_eventdev_port_data
+  to rte_event_fp_ops, allows to fetch this data for fastpath eventdev inline functions
+  in advance. This changes the size of rte_event_fp_ops and result in ABI change.
+
 * security: Hide structures ``rte_security_ops`` and ``rte_security_ctx``
   as these are internal to DPDK library and drivers.
 
-- 
2.34.1