+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright 2018 The DPDK contributors
+
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
-------------------
-* eal: DPDK runtime configuration file (located at
- ``/var/run/.<prefix>_config``) will be moved. The new path will be as follows:
+* meson: The minimum supported version of meson for configuring and building
+ DPDK will be increased to v0.47.1 (from 0.41) from DPDK 19.05 onwards. For
+ those users with a version earlier than 0.47.1, an updated copy of meson
+ can be got using the ``pip``, or ``pip3``, tool for downloading python
+ packages.
+
+* kvargs: The function ``rte_kvargs_process`` will get a new parameter
+ for returning key match count. It will ease handling of no-match case.
- - if DPDK is running as root, path will be set to
- ``/var/run/dpdk/<prefix>/config``
- - if DPDK is not running as root and $XDG_RUNTIME_DIR is set, path will be set
- to ``$XDG_RUNTIME_DIR/dpdk/<prefix>/config``
- - if DPDK is not running as root and $XDG_RUNTIME_DIR is not set, path will be
- set to ``/tmp/dpdk/<prefix>/config``
+* 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 v18.08.
+* 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
new scheme of device identification.
- Functions previously deprecated will change or disappear:
+ ``rte_eal_devargs_type_count``
- + ``rte_eal_devargs_parse`` will change its format and use.
-
-* 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: a new set of mbuf mempool ops name APIs for user, platform and best
- mempool names have been defined in ``rte_mbuf`` in v18.02. The uses of
- ``rte_eal_mbuf_default_mempool_ops`` shall be replaced by
- ``rte_mbuf_best_mempool_ops``.
- The following function is deprecated since 18.05, and will be removed
- in 18.08:
-
- - ``rte_eal_mbuf_default_mempool_ops``
-
-* mbuf: The opaque ``mbuf->hash.sched`` field will be updated to support generic
- definition in line with the ethdev TM and MTR APIs. Currently, this field
- is defined in librte_sched in a non-generic way. The new generic format
- will contain: queue ID, traffic class, color. Field size will not change.
-
-* mbuf: the macro ``RTE_MBUF_INDIRECT()`` will be removed in v18.08 or later and
- replaced with ``RTE_MBUF_CLONED()`` which is already added in v18.05. As
- ``EXT_ATTACHED_MBUF`` is newly introduced in v18.05, ``RTE_MBUF_INDIRECT()``
- can no longer be mutually exclusive with ``RTE_MBUF_DIRECT()`` if the new
- experimental API ``rte_pktmbuf_attach_extbuf()`` is used. Removal of the macro
- is to fix this semantic inconsistency.
-
-* ethdev: In v18.11 ``DEV_RX_OFFLOAD_CRC_STRIP`` offload flag will be removed, default
- behavior without any flag will be changed to CRC strip.
- To keep CRC ``DEV_RX_OFFLOAD_KEEP_CRC`` flag is required.
- ``KEEP_CRC``: Keep CRC in packet
- No flag: Strip CRC from packet
+
+* 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
+ memory segments used by dpaa2 driver for faster pa->va translation. This
+ 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
Target release for removal of the legacy API will be defined once most
PMDs have switched to rte_flow.
-* pdump: As we changed to use generic IPC, some changes in APIs and structure
- are expected in subsequent release.
-
- - ``rte_pdump_set_socket_dir`` will be removed;
- - The parameter, ``path``, of ``rte_pdump_init`` will be removed;
- - The enum ``rte_pdump_socktype`` will be removed.
-
-* cryptodev: The following changes will be made in the library
- for 18.08:
-
- - Functions ``rte_cryptodev_queue_pair_attach_sym_session()`` and
- ``rte_cryptodev_queue_pair_dettach_sym_session()`` will be deprecated from
- 18.05 and removed in 18.08, as there are no drivers doing anything useful
- with them.
- - Functions ``rte_cryptodev_queue_pair_start()`` and
- ``rte_cryptodev_queue_pair_stop()`` will be deprecated from 18.05
- and removed in 18.08, as there are no drivers doing anything useful
- with them.
- - Some feature flags such as ``RTE_CRYPTODEV_FF_MBUF_SCATTER_GATHER`` are ambiguous,
- so some will be replaced by more explicit flags.
- - Function ``rte_cryptodev_get_header_session_size()`` will be deprecated
- in 18.05, and it gets replaced with ``rte_cryptodev_sym_get_header_session_size()``.
- It will be removed in 18.08.
- - Function ``rte_cryptodev_get_private_session_size()`` will be deprecated
- in 18.05, and it gets replaced with ``rte_cryptodev_sym_get_private_session_size()``.
- It will be removed in 18.08.
+* 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.
git.droids-corp.org / dpdk.git / blobdiff