1 ABI and API Deprecation
2 =======================
4 See the :doc:`guidelines document for details of the ABI policy </contributing/versioning>`.
5 API and ABI deprecation notices are to be posted here.
11 * The EAL function pci_config_space_set is deprecated in release 16.04
12 and will be removed from 16.07.
13 Macros CONFIG_RTE_PCI_CONFIG, CONFIG_RTE_PCI_EXTENDED_TAG and
14 CONFIG_RTE_PCI_MAX_READ_REQUEST_SIZE will be removed.
15 The /sys entries extended_tag and max_read_request_size created by igb_uio
18 * ABI changes are planned for struct rte_pci_id, i.e., add new field ``class``.
19 This new added ``class`` field can be used to probe pci device by class
20 related info. This change should impact size of struct rte_pci_id and struct
21 rte_pci_device. The release 16.04 does not contain these ABI changes, but
24 * The following fields have been deprecated in rte_eth_stats:
25 ibadcrc, ibadlen, imcasts, fdirmatch, fdirmiss,
26 tx_pause_xon, rx_pause_xon, tx_pause_xoff, rx_pause_xoff
28 * The xstats API and rte_eth_xstats struct will be changed to allow retrieval
29 of values without any string copies or parsing.
30 No backwards compatibility is planned, as it would require code duplication
31 in every PMD that supports xstats.
33 * ABI changes are planned for adding four new flow types. This impacts
34 RTE_ETH_FLOW_MAX. The release 2.2 does not contain these ABI changes,
35 but release 2.3 will. [postponed]
37 * ABI change is planned for the rte_mempool structure to allow mempool
38 cache support to be dynamic depending on the mempool being created
39 needing cache support. Saves about 1.5M of memory per rte_mempool structure
40 by removing the per lcore cache memory. Change will occur in DPDK 16.07
41 release and will skip the define RTE_NEXT_ABI in DPDK 16.04 release. The
42 code affected is app/test/test_mempool.c and librte_mempool/rte_mempool.[ch].
43 The rte_mempool.local_cache will be converted from an array to a pointer to
44 allow for dynamic allocation of the per lcore cache memory.
46 * The rte_mempool struct will be changed in 16.07 to facilitate the new
47 external mempool manager functionality.
48 The ring element will be replaced with a more generic 'pool' opaque pointer
49 to allow new mempool handlers to use their own user-defined mempool
50 layout. Also newly added to rte_mempool is a handler index.
51 The existing API will be backward compatible, but there will be new API
52 functions added to facilitate the creation of mempools using an external
53 handler. The 16.07 release will contain these changes.
55 * The rte_mempool allocation will be changed in 16.07:
56 allocation of large mempool in several virtual memory chunks, new API
57 to populate a mempool, new API to free a mempool, allocation in
58 anonymous mapping, drop of specific dom0 code. These changes will
59 induce a modification of the rte_mempool structure, plus a
60 modification of the API of rte_mempool_obj_iter(), implying a breakage
63 * ABI changes are planned for struct rte_port_source_params in order to
64 support PCAP file reading feature. The release 16.04 contains this ABI
65 change wrapped by RTE_NEXT_ABI macro. Release 16.07 will contain this
66 change, and no backwards compatibility is planned.