doc: announce ethdev API change for default MAC

[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 ad7540b..7f90ef7 100644 (file)
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -111,6 +111,37 @@ Deprecation Notices
   Target release for removal of the legacy API will be defined once most
   PMDs have switched to rte_flow.
 
+* ethdev: A new rss level field planned in 18.05.
+  The new API add rss_level field to ``rte_eth_rss_conf`` to enable a choice
+  of RSS hash calculation on outer or inner header of tunneled packet.
+
+* ethdev:  Currently, if the  rte_eth_rx_burst() function returns a value less
+  than *nb_pkts*, the application will assume that no more packets are present.
+  Some of the hw queue based hardware can only support smaller burst for RX
+  and TX and thus break the expectation of the rx_burst API. Similar is the
+  case for TX burst as well as ring sizes. ``rte_eth_dev_info`` will be added
+  with following new parameters so as to support semantics for drivers to
+  define a preferred size for Rx/Tx burst and rings.
+
+  - Member ``struct preferred_size`` would be added to enclose all preferred
+    size to be fetched from driver/implementation.
+  - Members ``uint16_t rx_burst``,  ``uint16_t tx_burst``, ``uint16_t rx_ring``,
+    and ``uint16_t tx_ring`` would be added to ``struct preferred_size``.
+
+* ethdev: A work is being planned for 18.05 to expose VF port representors
+  as a mean to perform control and data path operation on the different VFs.
+  As VF representor is an ethdev port, new fields are needed in order to map
+  between the VF representor and the VF or the parent PF. Those new fields
+  are to be included in ``rte_eth_dev_info`` struct.
+
+* ethdev: The prototype and the behavior of
+  ``dev_ops->eth_mac_addr_set()`` will change in v18.05. A return code
+  will be added to notify the caller if an error occurred in the PMD. In
+  ``rte_eth_dev_default_mac_addr_set()``, the new default MAC address
+  will be copied in ``dev->data->mac_addrs[0]`` only if the operation is
+  successful. This modification will only impact the PMDs, not the
+  applications.
+
 * i40e: The default flexible payload configuration which extracts the first 16
   bytes of the payload for RSS will be deprecated starting from 18.02. If
   required the previous behavior can be configured using existing flow