X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Frel_notes%2Fdeprecation.rst;h=a3e7c720cedb66bff1e9dc24047d2bca000b4aa2;hb=9e5c3faecc152a53b1474312ad29f097d7044e87;hp=327fc2bf6639ebc25bcd929e7a6099b014b89272;hpb=c7970afddfb2f06fea587b69cba69006151716fc;p=dpdk.git diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index 327fc2bf66..a3e7c720ce 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -8,85 +8,76 @@ API and ABI deprecation notices are to be posted here. Deprecation Notices ------------------- -* The ethdev hotplug API is going to be moved to EAL with a notification - mechanism added to crypto and ethdev libraries so that hotplug is now - available to both of them. This API will be stripped of the device arguments - so that it only cares about hotplugging. - -* Structures embodying pci and vdev devices are going to be reworked to - integrate new common rte_device / rte_driver objects (see - http://dpdk.org/ml/archives/dev/2016-January/031390.html). - ethdev and crypto libraries will then only handle those objects so that they - do not need to care about the kind of devices that are being used, making it - easier to add new buses later. - -* The EAL function pci_config_space_set is deprecated in release 16.04 - and will be removed from 16.07. - Macros CONFIG_RTE_PCI_CONFIG, CONFIG_RTE_PCI_EXTENDED_TAG and - CONFIG_RTE_PCI_MAX_READ_REQUEST_SIZE will be removed. - The /sys entries extended_tag and max_read_request_size created by igb_uio - will be removed. - -* ABI changes are planned for struct rte_pci_id, i.e., add new field ``class``. - This new added ``class`` field can be used to probe pci device by class - related info. This change should impact size of struct rte_pci_id and struct - rte_pci_device. The release 16.04 does not contain these ABI changes, but - release 16.07 will. - -* The following fields have been deprecated in rte_eth_stats: - ibadcrc, ibadlen, imcasts, fdirmatch, fdirmiss, - tx_pause_xon, rx_pause_xon, tx_pause_xoff, rx_pause_xoff - -* The xstats API and rte_eth_xstats struct will be changed to allow retrieval - of values without any string copies or parsing. - No backwards compatibility is planned, as it would require code duplication - in every PMD that supports xstats. - -* ABI changes are planned for adding four new flow types. This impacts - RTE_ETH_FLOW_MAX. The release 2.2 does not contain these ABI changes, - but release 2.3 will. [postponed] - -* ABI change is planned for the rte_mempool structure to allow mempool - cache support to be dynamic depending on the mempool being created - needing cache support. Saves about 1.5M of memory per rte_mempool structure - by removing the per lcore cache memory. Change will occur in DPDK 16.07 - release and will skip the define RTE_NEXT_ABI in DPDK 16.04 release. The - code affected is app/test/test_mempool.c and librte_mempool/rte_mempool.[ch]. - The rte_mempool.local_cache will be converted from an array to a pointer to - allow for dynamic allocation of the per lcore cache memory. - -* ABI will change for rte_mempool struct to move the cache-related fields - to the more appropriate rte_mempool_cache struct. The mempool API is - also changed to enable external cache management that is not tied to EAL - threads. Some mempool get and put calls are removed in favor of a more - compact API. The ones that remain are backwards compatible and use the - per-lcore default cache if available. This change targets release 16.07. - -* The rte_mempool struct will be changed in 16.07 to facilitate the new - external mempool manager functionality. - The ring element will be replaced with a more generic 'pool' opaque pointer - to allow new mempool handlers to use their own user-defined mempool - layout. Also newly added to rte_mempool is a handler index. - The existing API will be backward compatible, but there will be new API - functions added to facilitate the creation of mempools using an external - handler. The 16.07 release will contain these changes. - -* The rte_mempool allocation will be changed in 16.07: - allocation of large mempool in several virtual memory chunks, new API - to populate a mempool, new API to free a mempool, allocation in - anonymous mapping, drop of specific dom0 code. These changes will - induce a modification of the rte_mempool structure, plus a - modification of the API of rte_mempool_obj_iter(), implying a breakage - of the ABI. - -* ABI changes are planned for struct rte_port_source_params in order to - support PCAP file reading feature. The release 16.04 contains this ABI - change wrapped by RTE_NEXT_ABI macro. Release 16.07 will contain this - change, and no backwards compatibility is planned. - -* A librte_vhost public structures refactor is planned for DPDK 16.07 - that requires both ABI and API change. - The proposed refactor would expose DPDK vhost dev to applications as - a handle, like the way kernel exposes an fd to user for locating a - specific file, and to keep all major structures internally, so that - we are likely to be free from ABI violations in future. +* eal: the following functions are deprecated starting from 17.05 and will + be removed in 17.08: + + - ``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`` + +* 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. + +* vfio: Some functions are planned to be exported outside librte_eal in 17.05. + VFIO APIs like ``vfio_setup_device``, ``vfio_get_group_fd`` can be used by + subsystem other than EAL/PCI. For that, these need to be exported symbols. + Such APIs are planned to be renamed according to ``rte_*`` naming convention + and exported from librte_eal. + +* The VDEV subsystem will be converted as driver of the new bus model. + It will imply some EAL API changes in 17.05. + +* ``eth_driver`` is planned to be removed in 17.05. This currently serves as + a placeholder for PMDs to register themselves. Changes for ``rte_bus`` will + provide a way to handle device initialization currently being done in + ``eth_driver``. Similarly, ``rte_pci_driver`` is planned to be removed from + ``rte_cryptodev_driver`` in 17.05. + +* ethdev: An API change is planned for 17.05 for the function + ``_rte_eth_dev_callback_process``. In 17.05 the function will return an ``int`` + instead of ``void`` and a fourth parameter ``void *ret_param`` will be added. + +* ethdev: for 17.05 it is planned to deprecate the following nine rte_eth_dev_* + functions and move them into the ixgbe PMD: + + ``rte_eth_dev_bypass_init``, ``rte_eth_dev_bypass_state_set``, + ``rte_eth_dev_bypass_state_show``, ``rte_eth_dev_bypass_event_store``, + ``rte_eth_dev_bypass_event_show``, ``rte_eth_dev_wd_timeout_store``, + ``rte_eth_dev_bypass_wd_timeout_show``, ``rte_eth_dev_bypass_ver_show``, + ``rte_eth_dev_bypass_wd_reset``. + + The following fields will be removed from ``struct eth_dev_ops``: + + ``bypass_init_t``, ``bypass_state_set_t``, ``bypass_state_show_t``, + ``bypass_event_set_t``, ``bypass_event_show_t``, ``bypass_wd_timeout_set_t``, + ``bypass_wd_timeout_show_t``, ``bypass_ver_show_t``, ``bypass_wd_reset_t``. + + The functions will be renamed to the following, and moved to the ``ixgbe`` PMD: + + ``rte_pmd_ixgbe_bypass_init``, ``rte_pmd_ixgbe_bypass_state_set``, + ``rte_pmd_ixgbe_bypass_state_show``, ``rte_pmd_ixgbe_bypass_event_set``, + ``rte_pmd_ixgbe_bypass_event_show``, ``rte_pmd_ixgbe_bypass_wd_timeout_set``, + ``rte_pmd_ixgbe_bypass_wd_timeout_show``, ``rte_pmd_ixgbe_bypass_ver_show``, + ``rte_pmd_ixgbe_bypass_wd_reset``. + +* 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 17.02 and will be removed in 17.05. + +* 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, + HASH and L2_TUNNEL, is superseded by the generic flow API (rte_flow) in + PMDs that implement the latter. + Target release for removal of the legacy API will be defined once most + PMDs have switched to rte_flow. + +* crypto/scheduler: the following two functions are deprecated starting + from 17.05 and will be removed in 17.08: + + - ``rte_crpytodev_scheduler_mode_get``, replaced by ``rte_cryptodev_scheduler_mode_get`` + - ``rte_crpytodev_scheduler_mode_set``, replaced by ``rte_cryptodev_scheduler_mode_set``