X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Frel_notes%2Fdeprecation.rst;h=d6cccbfdeefa3bcb7f196c80a788b5522dcb32b5;hb=7009e931d63188719a2e6b0329e9d2a796a2d7fa;hp=042d4d7869a77dfab49b16cf3dfe7e14e833599e;hpb=7a364faef185578f5787cf14b4159739c2bae29e;p=dpdk.git diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index 042d4d7869..dfcca87ab9 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -1,50 +1,53 @@ +.. 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 `. -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: the following functions are deprecated starting from 17.05 and will - be removed in 17.08: +* 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. - - ``rte_set_log_level``, replaced by ``rte_log_set_global_level`` - - ``rte_get_log_level``, replaced by ``rte_log_get_global_level`` - - ``rte_set_log_type``, replaced by ``rte_log_set_level`` - - ``rte_get_log_type``, replaced by ``rte_log_get_level`` +* kvargs: The function ``rte_kvargs_process`` will get a new parameter + for returning key match count. It will ease handling of no-match case. -* devargs: An ABI change is planned for 17.08 for the structure ``rte_devargs``. - The current version is dependent on bus-specific device identifier, which will - be made generic and abstracted, in order to make the EAL bus-agnostic. +* 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``. - Accompanying this evolution, device command line parameters will thus support - explicit bus definition in a device declaration. +* 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. + As such, ``rte_devargs`` device representation will change. -* 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 17.05. + - The enum ``rte_devtype`` was used to identify a bus and will disappear. + - Functions previously deprecated will change or disappear: -* The VDEV subsystem will be converted as driver of the new bus model. - It may imply some EAL API changes in 17.08. + + ``rte_eal_devargs_type_count`` -* The struct ``rte_pci_driver`` is planned to be removed from - ``rte_cryptodev_driver`` and ``rte_eventdev_driver`` in 17.08. +* 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. -* 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 17.05 and will be removed in 17.08. +* 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. -* ethdev: Tx offloads will no longer be enabled by default in 17.08. - 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. +* 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 @@ -54,28 +57,37 @@ Deprecation Notices Target release for removal of the legacy API will be defined once most PMDs have switched to rte_flow. -* cryptodev: All PMD names definitions will be moved to the individual PMDs - in 17.08. - -* cryptodev: API changes are planned for 17.08 for the sessions management - to make it agnostic to the underlying devices, removing coupling with - crypto PMDs, so a single session can be used on multiple devices. - - An API of followed functions will be changed to allow operate on multiple - devices with one session: - - - ``rte_cryptodev_sym_session_create`` - - ``rte_cryptodev_sym_session_free`` - - ``rte_cryptodev_sym_session_pool_create`` - - While dev_id will not be stored in the ``struct rte_cryptodev_sym_session``, - directly, the change of followed API is required: - - - ``rte_cryptodev_queue_pair_attach_sym_session`` - - ``rte_cryptodev_queue_pair_detach_sym_session`` - -* librte_table: The ``key_mask`` parameter will be added to all the hash tables - that currently do not have it, as well as to the hash compute function prototype. - The non-"do-sig" versions of the hash tables will be removed - (including the ``signature_offset`` parameter) - and the "do-sig" versions renamed accordingly. +* 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.