1 .. SPDX-License-Identifier: BSD-3-Clause
2 Copyright 2018 The DPDK contributors
4 ABI and API Deprecation
5 =======================
7 See the :doc:`guidelines document for details of the ABI policy </contributing/versioning>`.
8 API and ABI deprecation notices are to be posted here.
14 * linux: Linux kernel version 3.2 (which is the current minimum required
15 version for the DPDK) is not maintained anymore. Therefore the planned
16 minimum required kernel version for DPDK 19.02 will be the next oldest
17 Long Term Stable (LTS) version which is 3.16, but compatibility for
18 recent distribution kernels will be kept.
20 * kvargs: The function ``rte_kvargs_process`` will get a new parameter
21 for returning key match count. It will ease handling of no-match case.
23 * eal: both declaring and identifying devices will be streamlined in v18.11.
24 New functions will appear to query a specific port from buses, classes of
25 device and device drivers. Device declaration will be made coherent with the
26 new scheme of device identification.
27 As such, ``rte_devargs`` device representation will change.
29 - The enum ``rte_devtype`` was used to identify a bus and will disappear.
30 - Functions previously deprecated will change or disappear:
32 + ``rte_eal_devargs_type_count``
34 * pci: Several exposed functions are misnamed.
35 The following functions are deprecated starting from v17.11 and are replaced:
37 - ``eal_parse_pci_BDF`` replaced by ``rte_pci_addr_parse``
38 - ``eal_parse_pci_DomBDF`` replaced by ``rte_pci_addr_parse``
39 - ``rte_eal_compare_pci_addr`` replaced by ``rte_pci_addr_cmp``
41 * dpaa2: removal of ``rte_dpaa2_memsegs`` structure which has been replaced
42 by a pa-va search library. This structure was earlier being used for holding
43 memory segments used by dpaa2 driver for faster pa->va translation. This
44 structure would be made internal (or removed if all dependencies are cleared)
47 * ethdev: the legacy filter API, including
48 ``rte_eth_dev_filter_supported()``, ``rte_eth_dev_filter_ctrl()`` as well
49 as filter types MACVLAN, ETHERTYPE, FLEXIBLE, SYN, NTUPLE, TUNNEL, FDIR,
50 HASH and L2_TUNNEL, is superseded by the generic flow API (rte_flow) in
51 PMDs that implement the latter.
52 Target release for removal of the legacy API will be defined once most
53 PMDs have switched to rte_flow.
55 * ethdev: Maximum and minimum MTU values vary between hardware devices. In
56 hardware agnostic DPDK applications access to such information would allow
57 a more accurate way of validating and setting supported MTU values on a per
58 device basis rather than using a defined default for all devices. To
59 resolve this, the following members will be added to ``rte_eth_dev_info``.
60 Note: these can be added to fit a hole in the existing structure for amd64
61 but not for 32-bit, as such ABI change will occur as size of the structure
64 - Member ``uint16_t min_mtu`` the minimum MTU allowed.
65 - Member ``uint16_t max_mtu`` the maximum MTU allowed.
67 * crypto/aesni_mb: the minimum supported intel-ipsec-mb library version will be
68 changed from 0.49.0 to 0.52.0.