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.
-
+See the guidelines document for details of the :doc:`ABI policy
+<../contributing/abi_policy>`. API and ABI deprecation notices are to be posted
+here.
Deprecation Notices
-------------------
* kvargs: The function ``rte_kvargs_process`` will get a new parameter
for returning key match count. It will ease handling of no-match case.
+* 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: 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
+ ``rte_eal_devargs_type_count``
-* pci: Several exposed functions are misnamed.
- The following functions are deprecated starting from v17.11 and are replaced:
-
- - ``eal_parse_pci_BDF`` replaced by ``rte_pci_addr_parse``
- - ``eal_parse_pci_DomBDF`` replaced by ``rte_pci_addr_parse``
- - ``rte_eal_compare_pci_addr`` replaced by ``rte_pci_addr_cmp``
+* eal: The ``rte_logs`` 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.
* dpaa2: removal of ``rte_dpaa2_memsegs`` structure which has been replaced
by a pa-va search library. This structure was earlier being used for holding
structure would be made internal (or removed if all dependencies are cleared)
in future releases.
+* mempool: starting from v20.05, the API of rte_mempool_populate_iova()
+ and rte_mempool_populate_virt() will change to return 0 instead
+ of -EINVAL when there is not enough room to store one object. The ABI
+ will be preserved until 20.11.
+
* 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,
Target release for removal of the legacy API will be defined once most
PMDs have switched to rte_flow.
-* ethdev: Maximum and minimum MTU values vary between hardware devices. In
- hardware agnostic DPDK applications access to such information would allow
- a more accurate way of validating and setting supported MTU values on a per
- device basis rather than using a defined default for all devices. To
- resolve this, the following members will be added to ``rte_eth_dev_info``.
- Note: these can be added to fit a hole in the existing structure for amd64
- but not for 32-bit, as such ABI change will occur as size of the structure
- will increase.
-
- - Member ``uint16_t min_mtu`` the minimum MTU allowed.
- - Member ``uint16_t max_mtu`` the maximum MTU allowed.
-
-* crypto/aesni_mb: the minimum supported intel-ipsec-mb library version will be
- changed from 0.49.0 to 0.52.0.
+* 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_stop``
+ - ``rte_eth_dev_close``
+
+* ethdev: New offload flags ``DEV_RX_OFFLOAD_FLOW_MARK`` will be added in 19.11.
+ This will allow application to enable or disable PMDs from updating
+ ``rte_mbuf::hash::fdir``.
+ This scheme will allow PMDs to avoid writes to ``rte_mbuf`` fields on Rx and
+ thereby improve Rx performance if application wishes do so.
+ In 19.11 PMDs will still update the field even when the offload is not
+ enabled.
+
+* 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
+ to one it means it represents IV, when is set to zero it means J0 is used
+ directly, in this case 16 bytes of J0 need to be passed.
+
+* sched: To allow more traffic classes, flexible mapping of pipe queues to
+ traffic classes, and subport level configuration of pipes and queues
+ changes will be made to macros, data structures and API functions defined
+ in "rte_sched.h". These changes are aligned to improvements suggested in the
+ RFC https://mails.dpdk.org/archives/dev/2018-November/120035.html.
+
+* metrics: The function ``rte_metrics_init`` will have a non-void return
+ in order to notify errors instead of calling ``rte_exit``.
+
+* power: ``rte_power_set_env`` function will no longer return 0 on attempt
+ to set new power environment if power environment was already initialized.
+ In this case the function will return -1 unless the environment is unset first
+ (using ``rte_power_unset_env``). Other function usage scenarios will not change.
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