Deprecation Notices
-------------------
+* build: The macros defined to indicate which DPDK libraries and drivers
+ are included in the meson build are changing to a standardized format of
+ ``RTE_LIB_<NAME>`` and ``RTE_<CLASS>_<NAME>``, where ``NAME`` is the
+ upper-case component name, e.g. EAL, ETHDEV, IXGBE, and ``CLASS`` is the
+ upper-case name of the device class to which a driver belongs e.g.
+ ``NET``, ``CRYPTO``, ``VDPA``. The old macros are deprecated and will be
+ removed in a future release.
+
* 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.
+ can be got using the ``pip3`` tool (or ``python3 -m pip``) 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.
-* eal: To be more inclusive in choice of naming, the DPDK project
- will replace uses of master/slave in the API's and command line arguments.
-
- References to master/slave in relation to lcore will be renamed
- to initial/worker. The function ``rte_get_master_lcore()``
- will be renamed to ``rte_get_initial_lcore()``.
- For the 20.11 release, both names will be present and the
- old function will be marked with the deprecated tag.
- The old function will be removed in a future version.
-
- The iterator for worker lcores will also change:
- ``RTE_LCORE_FOREACH_SLAVE`` will be replaced with
- ``RTE_LCORE_FOREACH_WORKER``.
-
- The ``master-lcore`` argument to testpmd will be replaced
- with ``initial-lcore``. The old ``master-lcore`` argument
- will produce a runtime notification in 20.11 release, and
- be removed completely in a future release.
-
* eal: The terms blacklist and whitelist to describe devices used
by DPDK will be replaced in the 20.11 relase.
This will apply to command line arguments as well as macros.
These wrappers must be used for patches that need to be merged in 20.08
onwards. This change will not introduce any performance degradation.
-* igb_uio: In the view of reducing the kernel dependency from the main tree,
- as a first step, the Technical Board decided to move ``igb_uio``
- kernel module to the dpdk-kmods repository in the /linux/igb_uio/ directory
- in 20.11.
- Minutes of Technical Board Meeting of `2019-11-06
- <https://mails.dpdk.org/archives/dev/2019-November/151763.html>`_.
-
* lib: will fix extending some enum/define breaking the ABI. There are multiple
samples in DPDK that enum/define terminated with a ``.*MAX.*`` value which is
used by iterators, and arrays holding these values are sized with this
* mbuf: Some fields will be converted to dynamic API in DPDK 20.11
in order to reserve more space for the dynamic fields, as explained in
`this presentation <https://www.youtube.com/watch?v=Ttl6MlhmzWY>`_.
- The following static fields will be moved as dynamic:
-
- - ``timestamp``
- - ``userdata`` / ``udata64``
- - ``seqn``
-
As a consequence, the layout of the ``struct rte_mbuf`` will be re-arranged,
avoiding impact on vectorized implementation of the driver datapaths,
while evaluating performance gains of a better use of the first cache line.
-
-* 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,
- HASH and L2_TUNNEL, is superseded by the generic flow API (rte_flow) in
- PMDs that implement the latter.
- The legacy API will be removed in DPDK 20.11.
-
* ethdev: The flow director API, including ``rte_eth_conf.fdir_conf`` field,
and the related structures (``rte_fdir_*`` and ``rte_eth_fdir_*``),
will be removed in DPDK 20.11.
-* ethdev: The legacy L2 tunnel filtering API is deprecated as the rest of
- the legacy filtering API.
- The functions ``rte_eth_dev_l2_tunnel_eth_type_conf`` and
- ``rte_eth_dev_l2_tunnel_offload_set`` which were not marked as deprecated,
- will be removed in DPDK 20.11.
-
-* 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``.
In 19.11 PMDs will still update the field even when the offload is not
enabled.
-* ethdev: Add new fields to ``rte_eth_rxconf`` to configure the receiving
- queues to split ingress packets into multiple segments according to the
- specified lengths into the buffers allocated from the specified
- memory pools. The backward compatibility to existing API is preserved.
-
* ethdev: ``rx_descriptor_done`` dev_ops and ``rte_eth_rx_descriptor_done``
will be removed in 21.11.
Existing ``rte_eth_rx_descriptor_status`` and ``rte_eth_tx_descriptor_status``
as deprecated in DPDK 20.11, along with the associated macros ``ETH_MIRROR_*``.
This API will be fully removed in DPDK 21.11.
-* ethdev: The ``struct rte_flow_item_eth`` and ``struct rte_flow_item_vlan``
- structs will be modified, to include an additional value, indicating existence
- or absence of a VLAN header following the current header, as proposed in RFC
- https://mails.dpdk.org/archives/dev/2020-August/177536.html.
-
-* ethdev: The ``struct rte_flow_item_ipv6`` struct will be modified to include
- additional values, indicating existence or absence of IPv6 extension headers
- following the IPv6 header, as proposed in RFC
- https://mails.dpdk.org/archives/dev/2020-August/177257.html.
-
-* security: The API ``rte_security_session_create`` takes only single mempool
- for session and session private data. So the application need to create
- mempool for twice the number of sessions needed and will also lead to
- wastage of memory as session private data need more memory compared to session.
- Hence the API will be modified to take two mempool pointers - one for session
- and one for private data.
-
-* cryptodev: ``RTE_CRYPTO_AEAD_LIST_END`` from ``enum rte_crypto_aead_algorithm``,
- ``RTE_CRYPTO_CIPHER_LIST_END`` from ``enum rte_crypto_cipher_algorithm`` and
- ``RTE_CRYPTO_AUTH_LIST_END`` from ``enum rte_crypto_auth_algorithm``
- will be removed.
-
-* 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.
-
-* scheduler: The functions ``rte_cryptodev_scheduler_slave_attach``,
- ``rte_cryptodev_scheduler_slave_detach`` and
- ``rte_cryptodev_scheduler_slaves_get`` will be replaced in 20.11 by
- ``rte_cryptodev_scheduler_worker_attach``,
- ``rte_cryptodev_scheduler_worker_detach`` and
- ``rte_cryptodev_scheduler_workers_get`` accordingly.
-
-* eventdev: Following structures will be modified to support DLB PMD
- and future extensions:
-
- - ``rte_event_dev_info``
- - ``rte_event_dev_config``
- - ``rte_event_port_conf``
-
- Patches containing justification, documentation, and proposed modifications
- can be found at:
-
- - https://patches.dpdk.org/patch/71457/
- - https://patches.dpdk.org/patch/71456/
-
-* acl: ``RTE_ACL_CLASSIFY_NUM`` enum value will be removed.
- This enum value is not used inside DPDK, while it prevents to add new
- classify algorithms without causing an ABI breakage.
+* ethdev: Queue specific stats fields will be removed from ``struct rte_eth_stats``.
+ Mentioned fields are: ``q_ipackets``, ``q_opackets``, ``q_ibytes``, ``q_obytes``,
+ ``q_errors``.
+ Instead queue stats will be received via xstats API. Current method support
+ will be limited to maximum 256 queues.
+ Also compile time flag ``RTE_ETHDEV_QUEUE_STAT_CNTRS`` will be removed.
* sched: To allow more traffic classes, flexible mapping of pipe queues to
traffic classes, and subport level configuration of pipes and queues
in "rte_sched.h". These changes are aligned to improvements suggested in the
RFC https://mails.dpdk.org/archives/dev/2018-November/120035.html.
-* sched: To allow dynamic configuration of the subport bandwidth profile,
- changes will be made to data structures ``rte_sched_subport_params``,
- ``rte_sched_port_params`` and new data structure, API functions will be
- defined in ``rte_sched.h``. These changes are aligned as suggested in the
- RFC https://mails.dpdk.org/archives/dev/2020-July/175161.html
-
* metrics: The function ``rte_metrics_init`` will have a non-void return
in order to notify errors instead of calling ``rte_exit``.
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.
+* cmdline: ``cmdline`` structure will be made opaque to hide platform-specific
+ content. On Linux and FreeBSD, supported prior to DPDK 20.11,
+ original structure will be kept until DPDK 21.11.
+
* dpdk-setup.sh: This old script relies on deprecated stuff, and especially
``make``. Given environments are too much variables for such a simple script,
it will be removed in DPDK 20.11.
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