* 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.
+
+* mempool: Helper macro ``MEMPOOL_HEADER_SIZE()`` is deprecated and will
+ be removed in DPDK 22.11. The replacement macro
+ ``RTE_MEMPOOL_HEADER_SIZE()`` is internal only.
+
+* mempool: Macro to register mempool driver ``MEMPOOL_REGISTER_OPS()`` is
+ deprecated and will be removed in DPDK 22.11. Use replacement macro
+ ``RTE_MEMPOOL_REGISTER_OPS()``.
+
+* mempool: The mempool API macros ``MEMPOOL_PG_*`` are deprecated and
+ will be removed in DPDK 22.11.
+
+* 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
``RTE_ETH_FLOW_MAX`` is one sample of the mentioned case, adding a new flow
type will break the ABI because of ``flex_mask[RTE_ETH_FLOW_MAX]`` array
usage in following public struct hierarchy:
- ``rte_eth_fdir_flex_conf -> rte_fdir_conf -> rte_eth_conf (in the middle)``.
+ ``rte_eth_fdir_flex_conf -> rte_eth_fdir_conf -> rte_eth_conf (in the middle)``.
Need to identify this kind of usages and fix in 20.11, otherwise this blocks
us extending existing enum/define.
One solution can be using a fixed size array instead of ``.*MAX.*`` value.
and the related structures (``rte_fdir_*`` and ``rte_eth_fdir_*``),
will be removed in DPDK 20.11.
-* ethdev: New offload flags ``DEV_RX_OFFLOAD_FLOW_MARK`` will be added in 19.11.
- This will allow application to enable or disable PMDs from updating
- ``rte_mbuf::hash::fdir``.
- This scheme will allow PMDs to avoid writes to ``rte_mbuf`` fields on Rx and
- thereby improve Rx performance if application wishes do so.
- In 19.11 PMDs will still update the field even when the offload is not
- enabled.
-
-* ethdev: ``uint32_t max_rx_pkt_len`` field of ``struct rte_eth_rxmode``, will be
- replaced by a new ``uint32_t mtu`` field of ``struct rte_eth_conf`` in v21.11.
- The new ``mtu`` field will be used to configure the initial device MTU via
- ``rte_eth_dev_configure()`` API.
- Later MTU can be changed by ``rte_eth_dev_set_mtu()`` API as done now.
- The existing ``(struct rte_eth_dev)->data->mtu`` variable will be used to store
- the configured ``mtu`` value,
- and this new ``(struct rte_eth_dev)->data->dev_conf.mtu`` variable will
- be used to store the user configuration request.
- Unlike ``max_rx_pkt_len``, which was valid only when ``JUMBO_FRAME`` enabled,
- ``mtu`` field will be always valid.
- When ``mtu`` config is not provided by the application, default ``RTE_ETHER_MTU``
- value will be used.
- ``(struct rte_eth_dev)->data->mtu`` should be updated after MTU set successfully,
- either by ``rte_eth_dev_configure()`` or ``rte_eth_dev_set_mtu()``.
-
- An application may need to configure device for a specific Rx packet size, like for
- cases ``DEV_RX_OFFLOAD_SCATTER`` is not supported and device received packet size
- can't be bigger than Rx buffer size.
- To cover these cases an application needs to know the device packet overhead to be
- able to calculate the ``mtu`` corresponding to a Rx buffer size, for this
- ``(struct rte_eth_dev_info).max_rx_pktlen`` will be kept,
- the device packet overhead can be calculated as:
- ``(struct rte_eth_dev_info).max_rx_pktlen - (struct rte_eth_dev_info).max_mtu``
-
-* ethdev: ``rx_descriptor_done`` dev_ops and ``rte_eth_rx_descriptor_done``
- will be removed in 21.11.
- Existing ``rte_eth_rx_descriptor_status`` and ``rte_eth_tx_descriptor_status``
- APIs can be used as replacement.
-
-* ethdev: The port mirroring API can be replaced with a more fine grain flow API.
- The structs ``rte_eth_mirror_conf``, ``rte_eth_vlan_mirror`` and the functions
- ``rte_eth_mirror_rule_set``, ``rte_eth_mirror_rule_reset`` will be marked
- as deprecated in DPDK 20.11, along with the associated macros ``ETH_MIRROR_*``.
- This API will be fully removed in DPDK 21.11.
-
-* ethdev: Attribute ``shared`` of the ``struct rte_flow_action_count``
- is deprecated and will be removed in DPDK 21.11. Shared counters should
- be managed using shared actions API (``rte_flow_shared_action_create`` etc).
+* ethdev: Announce moving from dedicated modify function for each field,
+ to using the general ``rte_flow_modify_field`` action.
* ethdev: The flow API matching pattern structures, ``struct rte_flow_item_*``,
should start with relevant protocol header.
will be limited to maximum 256 queues.
Also compile time flag ``RTE_ETHDEV_QUEUE_STAT_CNTRS`` will be removed.
-* 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``.
-
-* 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: Items and actions ``PF``, ``VF``, ``PHY_PORT``, ``PORT_ID`` are
+ deprecated as hard-to-use / ambiguous and will be removed in DPDK 22.11.
+
+* ethdev: The use of attributes ``ingress`` / ``egress`` in "transfer" flows
+ is deprecated as ambiguous with respect to the embedded switch. The use of
+ these attributes will become invalid starting from DPDK 22.11.
+
+* ethdev: Actions ``OF_SET_MPLS_TTL``, ``OF_DEC_MPLS_TTL``, ``OF_SET_NW_TTL``,
+ ``OF_COPY_TTL_OUT``, ``OF_COPY_TTL_IN`` are deprecated as not supported by
+ any PMD, so they will be removed in DPDK 22.11.
+
+* ethdev: Actions ``OF_DEC_NW_TTL``, ``SET_IPV4_SRC``, ``SET_IPV4_DST``,
+ ``SET_IPV6_SRC``, ``SET_IPV6_DST``, ``SET_TP_SRC``, ``SET_TP_DST``,
+ ``DEC_TTL``, ``SET_TTL``, ``SET_MAC_SRC``, ``SET_MAC_DST``, ``INC_TCP_SEQ``,
+ ``DEC_TCP_SEQ``, ``INC_TCP_ACK``, ``DEC_TCP_ACK``, ``SET_IPV4_DSCP``,
+ ``SET_IPV6_DSCP``, ``SET_TAG``, ``SET_META`` are marked as legacy and
+ superseded by the generic MODIFY_FIELD action.
+ The legacy actions should be deprecated in 22.07, once MODIFY_FIELD
+ alternative is implemented.
+ The legacy actions should be removed in DPDK 22.11.
+
+* cryptodev: Hide structures ``rte_cryptodev_sym_session`` and
+ ``rte_cryptodev_asym_session`` to remove unnecessary indirection between
+ session and the private data of session. An opaque pointer can be exposed
+ directly to application which can be attached to the ``rte_crypto_op``.
+
+* security: Hide structure ``rte_security_session`` and expose an opaque
+ pointer for the private data to the application which can be attached
+ to the packet while enqueuing.
* 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.
+* raw/ioat: The ``ioat`` rawdev driver has been deprecated, since it's
+ functionality is provided through the new ``dmadev`` infrastructure.
+ To continue to use hardware previously supported by the ``ioat`` rawdev driver,
+ applications should be updated to use the ``dmadev`` library instead,
+ with the underlying HW-functionality being provided by the ``ioat`` or
+ ``idxd`` dma drivers