2e14846d15
The purpose of this patch is used to add a new field "class" in rte_pci_id structure. The new class field includes class_id, subcalss_id, programming interface of a pci device. With this field, we can identify pci device by its class info, which can be more flexible instead of probing the device by vendor_id OR device_id OR subvendor_id OR subdevice_id. For example, we can probe all nvme devices by class field, which can be quite convenient. Signed-off-by: Ziye Yang <ziye.yang@intel.com> Acked-by: Bruce Richardson <bruce.richardson@intel.com> Acked-by: Helin Zhang <helin.zhang@intel.com> Acked-by: Cunming Liang <cunming.liang@intel.com>
57 lines
2.7 KiB
ReStructuredText
57 lines
2.7 KiB
ReStructuredText
ABI and API Deprecation
|
|
=======================
|
|
|
|
See the :doc:`guidelines document for details of the ABI policy </contributing/versioning>`.
|
|
API and ABI deprecation notices are to be posted here.
|
|
|
|
|
|
Deprecation Notices
|
|
-------------------
|
|
|
|
* 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
|
|
|
|
* 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.
|
|
|
|
* 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.
|