[PATCH] doc: deprecation notice for sched API change

[Jasvinder Singh <jasvinder.singh@intel.com>]

There will be change in API functions because of mbuf sched field
updates, outlined in deprecation note of mbuf->hash.sched.

Signed-off-by: Jasvinder Singh <jasvinder.singh@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
---
 doc/guides/rel_notes/deprecation.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 34b28234c..b54598d07 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -34,6 +34,11 @@ Deprecation Notices
   is defined in librte_sched in a non-generic way. The new generic format
   will contain: queue ID, traffic class, color. Field size will not change.
 
+* sched: Some API functions will change prototype due to the above
+  deprecation note for mbuf->hash.sched, e.g. rte_sched_port_pkt_write() and
+  rte_sched_port_pkt_read() will likely have an additional parameter
+  of type struct rte_sched_port.
+
 * mbuf: the macro ``RTE_MBUF_INDIRECT()`` will be removed in v18.08 or later and
   replaced with ``RTE_MBUF_CLONED()`` which is already added in v18.05. As
   ``EXT_ATTACHED_MBUF`` is newly introduced in v18.05, ``RTE_MBUF_INDIRECT()``
-- 
2.17.1