[dpdk-dev] [PATCH] doc: announce ABI change on ethdev

[Shahaf Shuler <shahafs@mellanox.com>]

This is an ABI change notice for DPDK 17.08 in librte_ether
about changes in rte_eth_txmode structure.

Currently Tx offloads are enabled by default, and can be disabled
using ETH_TXQ_FLAGS_NO* flags. This behaviour is not consistent with
the Rx side where the Rx offloads are disabled by default and enabled
according to bit field in rte_eth_rxmode structure.

The proposal is to disable the Tx offloads by default, and provide
a way for the application to enable them in rte_eth_txmode structure.
Besides of making the Tx configuration API more consistent for
applications, PMDs will be able to provide a better out of the
box performance.
Finally, as part of the work, the ETH_TXQ_FLAGS_NO* will
be superseded as well.

Signed-off-by: Shahaf Shuler <shahafs@mellanox.com>
---
looks like this patch has arrived to everyone     
besides dev@dpdk.org resending it again. sorry for
the noise.                                        
---
 doc/guides/rel_notes/deprecation.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index a3e7c720c..0920b4766 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -81,3 +81,11 @@ Deprecation Notices
 
   - ``rte_crpytodev_scheduler_mode_get``, replaced by ``rte_cryptodev_scheduler_mode_get``
   - ``rte_crpytodev_scheduler_mode_set``, replaced by ``rte_cryptodev_scheduler_mode_set``
+
+* ethdev: in 17.08 ABI changes are planned:
+  Tx offloads will no longer be enabled by default.
+  Instead, the ``rte_eth_txmode`` structure will be extended with bit field to enable
+  each Tx offload.
+  Besides of making the Rx/Tx configuration API more consistent for the
+  application, PMDs will be able to provide a better out of the box performance.
+  as part of the work, ``ETH_TXQ_FLAGS_NO*`` will be superseded as well.
-- 
2.12.0