doc: announce common prefix for ethdev

[dpdk.git] / doc / guides / rel_notes / deprecation.rst

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 92db9e1..d9c0e65 100644 (file)
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -32,6 +32,11 @@ Deprecation Notices
   ``__atomic_thread_fence`` must be used for patches that need to be merged in
   20.08 onwards. This change will not introduce any performance degradation.
 
+* pci: To reduce unnecessary ABIs exposed by DPDK bus driver, "rte_bus_pci.h"
+  will be made internal in 21.11 and macros/data structures/functions defined
+  in the header will not be considered as ABI anymore. This change is inspired
+  by the RFC https://patchwork.dpdk.org/project/dpdk/list/?series=17176.
+
 * lib: will fix extending some enum/define breaking the ABI. There are multiple
   samples in DPDK that enum/define terminated with a ``.*MAX.*`` value which is
   used by iterators, and arrays holding these values are sized with this
@@ -46,6 +51,12 @@ Deprecation Notices
   us extending existing enum/define.
   One solution can be using a fixed size array instead of ``.*MAX.*`` value.
 
+* ethdev: Will add ``RTE_ETH_`` prefix to all ethdev macros/enums in v21.11.
+  Macros will be added for backward compatibility.
+  Backward compatibility macros will be removed on v22.11.
+  A few old backward compatibility macros from 2013 that does not have
+  proper prefix will be removed on v21.11.
+
 * ethdev: The flow director API, including ``rte_eth_conf.fdir_conf`` field,
   and the related structures (``rte_fdir_*`` and ``rte_eth_fdir_*``),
   will be removed in DPDK 20.11.