doc: announce ethdev API change for default MAC

Announce internal PMD API change in the function to set the default MAC
address. The objective is to be able to notify errors occurring in the
PMD.

Link: https://dpdk.org/dev/patchwork/patch/32284/
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Shahaf Shuler <shahafs@mellanox.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index e931a24..7f90ef7 100644 (file)
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -134,6 +134,14 @@ Deprecation Notices
   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