doc: announce ethdev functions will not return void

[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 b989ea6..b777f9e 100644 (file)
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -23,6 +23,10 @@ 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: The ``lcore_config`` 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.
+
 * 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
@@ -57,6 +61,16 @@ Deprecation Notices
   structure would be made internal (or removed if all dependencies are cleared)
   in future releases.
 
+* net: The Ethernet address and header definitions will change
+  attributes. The Ethernet address struct will no longer be marked as
+  packed since the packed attribute is meaningless on a byte
+  array. The Ethernet header will be marked as aligned on a 2-byte
+  boundary and will no longer have the packed attribute. This allows
+  for efficient access on CPU architectures where unaligned access is
+  expensive. These changes should not impact normal usage because drivers
+  naturally align the Ethernet header on receive and all known
+  encapsulations preserve the alignment of the header.
+
 * 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,
@@ -65,6 +79,20 @@ Deprecation Notices
   Target release for removal of the legacy API will be defined once most
   PMDs have switched to rte_flow.
 
+* ethdev: Update API functions returning ``void`` to return ``int`` with
+  negative errno values to indicate various error conditions (e.g.
+  invalid port ID, unsupported operation, failed operation):
+
+  - ``rte_eth_dev_info_get``
+  - ``rte_eth_promiscuous_enable`` and ``rte_eth_promiscuous_disable``
+  - ``rte_eth_allmulticast_enable`` and ``rte_eth_allmulticast_disable``
+  - ``rte_eth_link_get`` and ``rte_eth_link_get_nowait``
+  - ``rte_eth_dev_stop``
+  - ``rte_eth_dev_close``
+  - ``rte_eth_xstats_reset``
+  - ``rte_eth_macaddr_get``
+  - ``rte_eth_dev_owner_delete``
+
 * cryptodev: support for using IV with all sizes is added, J0 still can
   be used but only when IV length in following structs ``rte_crypto_auth_xform``,
   ``rte_crypto_aead_xform`` is set to zero. When IV length is greater or equal