X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Frel_notes%2Fdeprecation.rst;h=ac7fb29a7faa533ec263ac7e0f0dea1e20000bca;hb=476c847ab6755d233dd786e8b87970c7105fbce2;hp=a2faa2e5a2d52c349375e7efa4ba41c47b619a29;hpb=00a3d8104ac5ed9b627426d81a47a692a6ee7f90;p=dpdk.git diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index a2faa2e5a2..ac7fb29a7f 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -1,3 +1,6 @@ +.. SPDX-License-Identifier: BSD-3-Clause + Copyright 2018 The DPDK contributors + ABI and API Deprecation ======================= @@ -8,37 +11,60 @@ API and ABI deprecation notices are to be posted here. Deprecation Notices ------------------- -* eal: several API and ABI changes are planned for ``rte_devargs`` in v17.11. - The format of device command line parameters will change. The bus will need - to be explicitly stated in the device declaration. The enum ``rte_devtype`` - was used to identify a bus and will disappear. - The structure ``rte_devargs`` will change. - The ``rte_devargs_list`` will be made private. - The following functions are deprecated starting from 17.08 and will either be - modified or removed in 17.11: - - - ``rte_eal_devargs_add`` - - ``rte_eal_devargs_type_count`` - - ``rte_eal_parse_devargs_str``, replaced by ``rte_eal_devargs_parse`` - -* eal: An ABI change is planned for 17.11 to make DPDK aware of IOVA address - translation scheme. - Reference to phys address in EAL data-structure or functions may change to - IOVA address or more appropriate name. - The change will be only for the name. - Functional aspects of the API or data-structure will remain same. - -* 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 17.08 and will be removed in 17.11. - -* ethdev: Tx offloads will no longer be enabled by default in 17.11. - 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 - As part of the work, ``ETH_TXQ_FLAGS_NO*`` will be superseded as well. +* linux: Linux kernel version 3.2 (which is the current minimum required + version for the DPDK) is not maintained anymore. Therefore the planned + minimum required kernel version for DPDK 19.02 will be the next oldest + Long Term Stable (LTS) version which is 3.16, but compatibility for + recent distribution kernels will be kept. + +* 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: function ``rte_bsf64`` in ``rte_bitmap.h`` has been renamed to + ``rte_bsf64_safe`` and moved to ``rte_common.h``. A new ``rte_bsf64`` function + will be added in the next release in ``rte_common.h`` that follows convention + set by existing ``rte_bsf32`` function. + +* 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. + + - The enum ``rte_devtype`` was used to identify a bus and will disappear. + - Functions previously deprecated will change or disappear: + + + ``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`` + +* 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. + +* 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. + +* sched: Some API functions will change prototype due to the above + deprecation note for mbuf->hash.sched, e.g. ``rte_sched_port_pkt_write()`` + and ``rte_sched_port_pkt_read()`` will likely have an additional parameter + of type ``struct rte_sched_port``. + +* 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: the legacy filter API, including ``rte_eth_dev_filter_supported()``, ``rte_eth_dev_filter_ctrl()`` as well @@ -48,20 +74,27 @@ Deprecation Notices Target release for removal of the legacy API will be defined once most PMDs have switched to rte_flow. -* ethdev: new parameters - ``rte_security_capabilities`` and - ``rte_security_ops`` will be added to ``rte_eth_dev_info`` and - ``rte_eth_dev`` respectively to support security operations like - ipsec inline. +* 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. -* cryptodev: new parameters - ``rte_security_capabilities`` and - ``rte_security_ops`` will be added to ``rte_cryptodev_info`` and - ``rte_cryptodev`` respectively to support security protocol offloaded - operations. + - Member ``uint16_t min_mtu`` the minimum MTU allowed. + - Member ``uint16_t max_mtu`` the maximum MTU allowed. -* cryptodev: the following function is deprecated starting from 17.08 and will - be removed in 17.11: +* security: New field ``uint64_t opaque_data`` is planned to be added into + ``rte_security_session`` structure. That would allow upper layer to easily + associate/de-associate some user defined data with the security session. - - ``rte_cryptodev_create_vdev`` +* cryptodev: several API and ABI changes are planned for rte_cryptodev + in v19.02: -* librte_meter: The API will change to accommodate configuration profiles. - Most of the API functions will have an additional opaque parameter. + - The size and layout of ``rte_cryptodev_sym_session`` will change + to fix existing issues. + - The size and layout of ``rte_cryptodev_qp_conf`` and syntax of + ``rte_cryptodev_queue_pair_setup`` will change to to allow to use + two different mempools for crypto and device private sessions.