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

[Sivaprasad Tummala]

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

Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala at amd.com>
---
 doc/guides/rel_notes/deprecation.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 8e1cdd677a..2c69338818 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -133,6 +133,10 @@ 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. This changes
+  the size of rte_event_fp_ops and result in ABI change.
+
 * flow_classify: The flow_classify library and example have no maintainer.
   The library is experimental and, as such, it could be removed from DPDK.
   Its removal has been postponed to let potential users report interest
-- 
2.34.1