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ABI and API Deprecation
=======================
See the :doc:`guidelines document for details of the ABI policy </contributing/versioning>`.
API and ABI deprecation notices are to be posted here.
Deprecation Notices
-------------------
* igb_uio: iomem mapping and sysfs files created for iomem and ioport in
igb_uio will be removed, because we are able to detect these from what Linux
has exposed, like the way we have done with uio-pci-generic. This change
targets release 17.02.
* ABI/API changes are planned for 17.02: ``rte_device``, ``rte_driver`` will be
impacted because of introduction of a new ``rte_bus`` hierarchy. This would
also impact the way devices are identified by EAL. A bus-device-driver model
will be introduced providing a hierarchical view of devices.
* ``eth_driver`` is planned to be removed in 17.02. This currently serves as
a placeholder for PMDs to register themselves. Changes for ``rte_bus`` will
provide a way to handle device initialization currently being done in
``eth_driver``.
* In 17.02 ABI changes are planned: the ``rte_eth_dev`` structure will be
extended with new function pointer ``tx_pkt_prepare`` allowing verification
and processing of packet burst to meet HW specific requirements before
transmit. Also new fields will be added to the ``rte_eth_desc_lim`` structure:
``nb_seg_max`` and ``nb_mtu_seg_max`` providing information about number of
segments limit to be transmitted by device for TSO/non-TSO packets.
* In 17.02 ABI change is planned: the ``rte_eth_dev_info`` structure
will be extended with a new member ``fw_version`` in order to store
the NIC firmware version.
* ethdev: an API change is planned for 17.02 for the function
``_rte_eth_dev_callback_process``. In 17.02 the function will return an ``int``
instead of ``void`` and a fourth parameter ``void *ret_param`` will be added.
* ethdev: for 17.02 it is planned to deprecate the following five functions
and move them in ixgbe:
``rte_eth_dev_set_vf_rxmode``
``rte_eth_dev_set_vf_rx``
``rte_eth_dev_set_vf_tx``
``rte_eth_dev_set_vf_vlan_filter``
``rte_eth_set_vf_rate_limit``
* ABI changes are planned for 17.02 in the ``rte_mbuf`` structure: some fields
may be reordered to facilitate the writing of ``data_off``, ``refcnt``, and
``nb_segs`` in one operation, because some platforms have an overhead if the
store address is not naturally aligned. Other mbuf fields, such as the
``port`` field, may be moved or removed as part of this mbuf work. A
``timestamp`` will also be added.
* The mbuf flags PKT_RX_VLAN_PKT and PKT_RX_QINQ_PKT are deprecated and
are respectively replaced by PKT_RX_VLAN_STRIPPED and
PKT_RX_QINQ_STRIPPED, that are better described. The old flags and
their behavior will be kept until 16.11 and will be removed in 17.02.
* mempool: The functions ``rte_mempool_count`` and ``rte_mempool_free_count``
will be removed in 17.02.
They are replaced by ``rte_mempool_avail_count`` and
``rte_mempool_in_use_count`` respectively.
* mempool: The functions for single/multi producer/consumer are deprecated
and will be removed in 17.02.
It is replaced by ``rte_mempool_generic_get/put`` functions.
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