+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright 2018 The DPDK contributors
+
ABI and API Deprecation
=======================
Deprecation Notices
-------------------
-* eal: both declaring and identifying devices will be streamlined in v18.08.
+* eal: certain structures will change in EAL on account of upcoming external
+ memory support. Aside from internal changes leading to an ABI break, the
+ following externally visible changes will also be implemented:
+
+ - ``rte_memseg_list`` will change to include a boolean flag indicating
+ whether a particular memseg list is externally allocated. This will have
+ implications for any users of memseg-walk-related functions, as they will
+ now have to skip externally allocated segments in most cases if the intent
+ is to only iterate over internal DPDK memory.
+ - ``socket_id`` parameter across the entire DPDK will gain additional meaning,
+ as some socket ID's will now be representing externally allocated memory. No
+ changes will be required for existing code as backwards compatibility will
+ be kept, and those who do not use this feature will not see these extra
+ socket ID's.
+
+* 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_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
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
-
* 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,
- ``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.
+
+* ethdev: flow API function ``rte_flow_copy()`` will be deprecated in v18.11
+ in favor of ``rte_flow_conv()`` (which will appear in that version) and
+ subsequently removed for v19.02.
+
+ This is due to a lack of flexibility and reliance on a type unusable with
+ C++ programs (struct rte_flow_desc).
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