* rte_atomicNN_xxx: These APIs do not take memory order parameter. This does
not allow for writing optimized code for all the CPU architectures supported
- in DPDK. DPDK will adopt C11 atomic operations semantics and provide wrappers
- using C11 atomic built-ins. These wrappers must be used for patches that
- need to be merged in 20.08 onwards. This change will not introduce any
- performance degradation.
+ in DPDK. DPDK has adopted the atomic operations from
+ https://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html. These
+ operations must be used for patches that need to be merged in 20.08 onwards.
+ This change will not introduce any performance degradation.
* rte_smp_*mb: These APIs provide full barrier functionality. However, many
- use cases do not require full barriers. To support such use cases, DPDK will
- adopt C11 barrier semantics and provide wrappers using C11 atomic built-ins.
- These wrappers must be used for patches that need to be merged in 20.08
- onwards. This change will not introduce any performance degradation.
+ use cases do not require full barriers. To support such use cases, DPDK has
+ adopted atomic operations from
+ https://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html. These
+ operations and a new wrapper ``rte_atomic_thread_fence`` instead of
+ ``__atomic_thread_fence`` must be used for patches that need to be merged in
+ 20.08 onwards. This change will not introduce any performance degradation.
+
+* pci: To reduce unnecessary ABIs exposed by DPDK bus driver, "rte_bus_pci.h"
+ will be made internal in 21.11 and macros/data structures/functions defined
+ in the header will not be considered as ABI anymore. This change is inspired
+ by the RFC https://patchwork.dpdk.org/project/dpdk/list/?series=17176.
* lib: will fix extending some enum/define breaking the ABI. There are multiple
samples in DPDK that enum/define terminated with a ``.*MAX.*`` value which is
us extending existing enum/define.
One solution can be using a fixed size array instead of ``.*MAX.*`` value.
+* ethdev: Will add ``RTE_ETH_`` prefix to all ethdev macros/enums in v21.11.
+ Macros will be added for backward compatibility.
+ Backward compatibility macros will be removed on v22.11.
+ A few old backward compatibility macros from 2013 that does not have
+ proper prefix will be removed on v21.11.
+
* ethdev: The flow director API, including ``rte_eth_conf.fdir_conf`` field,
and the related structures (``rte_fdir_*`` and ``rte_eth_fdir_*``),
will be removed in DPDK 20.11.
will be limited to maximum 256 queues.
Also compile time flag ``RTE_ETHDEV_QUEUE_STAT_CNTRS`` will be removed.
-* sched: To allow more traffic classes, flexible mapping of pipe queues to
- traffic classes, and subport level configuration of pipes and queues
- changes will be made to macros, data structures and API functions defined
- in "rte_sched.h". These changes are aligned to improvements suggested in the
- RFC https://mails.dpdk.org/archives/dev/2018-November/120035.html.
+* ethdev: The offload flag ``PKT_RX_EIP_CKSUM_BAD`` will be removed and
+ replaced by the new flag ``PKT_RX_OUTER_IP_CKSUM_BAD``. The new name is more
+ consistent with existing outer header checksum status flag naming, which
+ should help in reducing confusion about its usage.
+
+* i40e: As there are both i40evf and iavf pmd, the functions of them are
+ duplicated. And now more and more advanced features are developed on iavf.
+ To keep consistent with kernel driver's name
+ (https://patchwork.ozlabs.org/patch/970154/), i40evf is no need to maintain.
+ Starting from 21.05, the default VF driver of i40e will be iavf, but i40evf
+ can still be used if users specify the devarg "driver=i40evf". I40evf will
+ be deleted in DPDK 21.11.
+
+* eventdev: The structure ``rte_event_eth_rx_adapter_queue_conf`` will be
+ extended to include ``rte_event_eth_rx_adapter_event_vector_config`` elements
+ and the function ``rte_event_eth_rx_adapter_queue_event_vector_config`` will
+ be removed in DPDK 21.11.
+
+ An application can enable event vectorization by passing the desired vector
+ values to the function ``rte_event_eth_rx_adapter_queue_add`` using
+ the structure ``rte_event_eth_rx_adapter_queue_add``.
* metrics: The function ``rte_metrics_init`` will have a non-void return
in order to notify errors instead of calling ``rte_exit``.
* cmdline: ``cmdline`` structure will be made opaque to hide platform-specific
content. On Linux and FreeBSD, supported prior to DPDK 20.11,
original structure will be kept until DPDK 21.11.
+
+* security: The functions ``rte_security_set_pkt_metadata`` and
+ ``rte_security_get_userdata`` will be made inline functions and additional
+ flags will be added in structure ``rte_security_ctx`` in DPDK 21.11.
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