net/octeontx2: support CN98xx

[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 2e2ed92..d1034f6 100644 (file)
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -23,21 +23,23 @@ Deprecation Notices
 * eal: The function ``rte_eal_remote_launch`` will return new error codes
   after read or write error on the pipe, instead of calling ``rte_panic``.
 
-* eal: both declaring and identifying devices will be streamlined in v18.11.
-  New functions will appear to query a specific port from buses, classes of
-  device and device drivers. Device declaration will be made coherent with the
-  new scheme of device identification.
-  As such, ``rte_devargs`` device representation will change.
-
-  - The enum ``rte_devtype`` was used to identify a bus and will disappear.
-  - Functions previously deprecated will change or disappear:
-
-    + ``rte_eal_devargs_type_count``
-
 * eal: The ``rte_logs`` struct and global symbol will be made private to
   remove it from the externally visible ABI and allow it to be updated in the
   future.
 
+* rte_atomicNN_xxx: These APIs do not take memory order parameter. This does
+  not allow for writing optimized code for all the CPU architectures supported
+  in DPDK. DPDK will adopt C11 atomic operations semantics and provide wrappers
+  using C11 atomic built-ins. These wrappers must be used for patches that
+  need to be merged in 20.08 onwards. This change will not introduce any
+  performance degradation.
+
+* rte_smp_*mb: These APIs provide full barrier functionality. However, many
+  use cases do not require full barriers. To support such use cases, DPDK will
+  adopt C11 barrier semantics and provide wrappers using C11 atomic built-ins.
+  These wrappers must be used for patches that need to be merged in 20.08
+  onwards. This change will not introduce any performance degradation.
+
 * igb_uio: In the view of reducing the kernel dependency from the main tree,
   as a first step, the Technical Board decided to move ``igb_uio``
   kernel module to the dpdk-kmods repository in the /linux/igb_uio/ directory
@@ -59,6 +61,15 @@ Deprecation Notices
   us extending existing enum/define.
   One solution can be using a fixed size array instead of ``.*MAX.*`` value.
 
+* ethdev: Split the ``struct eth_dev_ops`` struct to hide it as much as possible
+  will be done in 20.11.
+  Currently the ``struct eth_dev_ops`` struct is accessible by the application
+  because some inline functions, like ``rte_eth_tx_descriptor_status()``,
+  access the struct directly.
+  The struct will be separate in two, the ops used by inline functions will be
+  moved next to Rx/Tx burst functions, rest of the ``struct eth_dev_ops`` struct
+  will be moved to header file for drivers to hide it from applications.
+
 * ethdev: the legacy filter API, including
   ``rte_eth_dev_filter_supported()``, ``rte_eth_dev_filter_ctrl()`` as well
   as filter types MACVLAN, ETHERTYPE, FLEXIBLE, SYN, NTUPLE, TUNNEL, FDIR,