1 .. SPDX-License-Identifier: BSD-3-Clause
2 Copyright 2020 The DPDK contributors
4 .. include:: <isonum.txt>
9 .. **Read this first.**
11 The text in the sections below explains how to update the release notes.
13 Use proper spelling, capitalization and punctuation in all sections.
15 Variable and config names should be quoted as fixed width text:
18 Build the docs and view the output file to ensure the changes are correct::
21 xdg-open build/doc/html/guides/rel_notes/release_20_11.html
27 .. This section should contain new features added in this release.
30 * **Add a title in the past tense with a full stop.**
32 Add a short 1-2 sentence description in the past tense.
33 The description should be enough to allow someone scanning
34 the release notes to understand the new feature.
36 If the feature adds a lot of sub-features you can use a bullet list
39 * Added feature foo to do something.
40 * Enhanced feature bar to do something else.
42 Refer to the previous release notes for examples.
44 Suggested order in release notes items:
45 * Core libs (EAL, mempool, ring, mbuf, buses)
46 * Device abstraction libs and PMDs
48 - cryptodev (lib, PMDs)
49 - eventdev (lib, PMDs)
52 * Apps, Examples, Tools (if significant)
54 This section is a comment. Do not overwrite or remove it.
55 Also, make sure to start the actual text at the margin.
56 =======================================================
58 * **Added write combining store APIs.**
60 Added ``rte_write32_wc`` and ``rte_write32_wc_relaxed`` APIs
61 that enable write combining stores (depending on architecture).
62 The functions are provided as a generic stubs and
63 x86 specific implementation.
65 * **Updated CRC modules of the net library.**
67 * Added runtime selection of the optimal architecture-specific CRC path.
68 * Added optimized implementations of CRC32-Ethernet and CRC16-CCITT
69 using the AVX512 and VPCLMULQDQ instruction sets.
71 * **Added the FEC API, for a generic FEC query and config.**
73 Added the FEC API which provides functions for query FEC capabilities and
74 current FEC mode from device. Also, API for configuring FEC mode is also provided.
76 * **Updated Broadcom bnxt driver.**
78 Updated the Broadcom bnxt driver with new features and improvements, including:
80 * Added support for 200G PAM4 link speed.
81 * Added support for RSS hash level selection.
82 * Updated HWRM structures to 1.10.1.70 version.
84 * **Updated Cisco enic driver.**
86 * Added support for VF representors with single-queue Tx/Rx and flow API
87 * Added support for egress PORT_ID action
88 * Added support for non-zero priorities for group 0 flows
89 * Added support for VXLAN decap combined with VLAN pop
91 * **Added hns3 FEC PMD, for supporting query and config FEC mode.**
93 Added the FEC PMD which provides functions for query FEC capabilities and
94 current FEC mode from device. Also, PMD for configuring FEC mode is also provided.
96 * **Updated Solarflare network PMD.**
98 Updated the Solarflare ``sfc_efx`` driver with changes including:
100 * Added SR-IOV PF support
102 * **Updated Virtio driver.**
104 * Added support for Vhost-vDPA backend to Virtio-user PMD.
105 * Changed default link speed to unknown.
106 * Added support for 200G link speed.
108 * **Updated Intel i40e driver.**
110 Updated the Intel i40e driver to use write combining stores.
112 * **Updated Intel ixgbe driver.**
114 Updated the Intel ixgbe driver to use write combining stores.
116 * **Updated Intel ice driver.**
118 Updated the Intel ice driver to use write combining stores.
120 * **Updated Intel qat driver.**
122 Updated the Intel qat driver to use write combining stores.
124 * **Added Ice Lake (Gen4) support for Intel NTB.**
126 Added NTB device support (4th generation) for Intel Ice Lake platform.
128 * **Added UDP/IPv4 GRO support for VxLAN and non-VxLAN packets.**
130 For VxLAN packets, added inner UDP/IPv4 support.
131 For non-VxLAN packets, added UDP/IPv4 support.
133 * **Extended flow-perf application.**
135 * Started supporting user order instead of bit mask:
136 Now the user can create any structure of rte_flow
137 using flow performance application with any order,
138 moreover the app also now starts to support inner
139 items matching as well.
140 * Added header modify actions.
142 * Added raw encap/decap actions.
143 * Added VXLAN encap/decap actions.
144 * Added ICMP and ICMP6 matching items.
145 * Added option to set port mask for insertion/deletion:
147 where N represents the hexadecimal bitmask of ports used.
149 * **Updated ioat rawdev driver**
151 The ioat rawdev driver has been updated and enhanced. Changes include:
153 * Added support for Intel\ |reg| Data Streaming Accelerator hardware.
154 For more information, see https://01.org/blogs/2019/introducing-intel-data-streaming-accelerator
155 * Added support for the fill operation via the API ``rte_ioat_enqueue_fill()``,
156 where the hardware fills an area of memory with a repeating pattern.
157 * Added a per-device configuration flag to disable management
158 of user-provided completion handles.
159 * Renamed the ``rte_ioat_do_copies()`` API to ``rte_ioat_perform_ops()``,
160 and renamed the ``rte_ioat_completed_copies()`` API to ``rte_ioat_completed_ops()``
161 to better reflect the APIs' purposes, and remove the implication that
162 they are limited to copy operations only.
163 [Note: The old API is still provided but marked as deprecated in the code]
164 * Added a new API ``rte_ioat_fence()`` to add a fence between operations.
165 This API replaces the ``fence`` flag parameter in the ``rte_ioat_enqueue_copies()`` function,
166 and is clearer as there is no ambiguity as to whether the flag should be
167 set on the last operation before the fence or the first operation after it.
169 * **Updated the pipeline library for alignment with the P4 language.**
171 Added new Software Switch (SWX) pipeline type that provides more
172 flexibility through API and feature alignment with the P4 language.
174 * The packet headers, meta-data, actions, tables and pipelines are
175 dynamically defined instead of selected from pre-defined set.
176 * The actions and the pipeline are defined with instructions.
177 * Extern objects and functions can be plugged into the pipeline.
178 * Transaction-oriented table updates.
184 .. This section should contain removed items in this release. Sample format:
186 * Add a short 1-2 sentence description of the removed item
189 This section is a comment. Do not overwrite or remove it.
190 Also, make sure to start the actual text at the margin.
191 =======================================================
193 * vhost: Dequeue zero-copy support has been removed.
195 * kernel: The module ``igb_uio`` has been moved to the git repository
196 ``dpdk-kmods`` in a new directory ``linux/igb_uio``.
198 * Removed Python 2 support since it was EOL'd in January 2020.
203 .. This section should contain API changes. Sample format:
205 * sample: Add a short 1-2 sentence description of the API change
206 which was announced in the previous releases and made in this release.
207 Start with a scope label like "ethdev:".
208 Use fixed width quotes for ``function_names`` or ``struct_names``.
211 This section is a comment. Do not overwrite or remove it.
212 Also, make sure to start the actual text at the margin.
213 =======================================================
215 * build macros: The macros defining ``RTE_MACHINE_CPUFLAG_*`` are removed.
216 The information provided by these macros is available through standard
219 * eal: The ``rte_logs`` struct and global symbol was made private
220 and is no longer part of the API.
222 * eal: Made the ``rte_dev_event`` structure private to the EAL as no public API
225 * eal: ``rte_cio_rmb()`` and ``rte_cio_wmb()`` were deprecated since 20.08
226 and are removed in this release.
228 * mem: Removed the unioned field ``phys_addr`` from
229 the structures ``rte_memseg`` and ``rte_memzone``.
230 The field ``iova`` is remaining from the old unions.
232 * mempool: Removed the unioned fields ``phys_addr`` and ``physaddr`` from
233 the structures ``rte_mempool_memhdr`` and ``rte_mempool_objhdr``.
234 The field ``iova`` is remaining from the old unions.
235 The flag name ``MEMPOOL_F_NO_PHYS_CONTIG`` is removed,
236 while the aliased flag ``MEMPOOL_F_NO_IOVA_CONTIG`` is kept.
238 * mbuf: Removed the functions ``rte_mbuf_data_dma_addr*``
239 and the macros ``rte_pktmbuf_mtophys*``.
240 The same functionality is still available with the functions and macros
241 having ``iova`` in their names instead of ``dma_addr`` or ``mtophys``.
243 * mbuf: Removed the unioned field ``buf_physaddr`` from ``rte_mbuf``.
244 The field ``buf_iova`` is remaining from the old union.
246 * mbuf: Removed the unioned field ``refcnt_atomic`` from
247 the structures ``rte_mbuf`` and ``rte_mbuf_ext_shared_info``.
248 The field ``refcnt`` is remaining from the old unions.
250 * pci: Removed the ``rte_kernel_driver`` enum defined in rte_dev.h and
251 replaced with a private enum in the PCI subsystem.
253 * pci: Removed the PCI resources map API from the public API
254 (``pci_map_resource`` and ``pci_unmap_resource``) and moved it to the
255 PCI bus driver along with the PCI resources lists and associated structures
256 (``pci_map``, ``pci_msix_table``, ``mapped_pci_resource`` and
257 ``mapped_pci_res_list``).
259 * ethdev: Removed the ``kdrv`` field in the ethdev ``rte_eth_dev_data``
260 structure as it gave no useful abstracted information to the applications.
262 * ethdev: ``rte_eth_rx_descriptor_done()`` API has been deprecated.
264 * Renamed internal ethdev APIs:
266 * ``_rte_eth_dev_callback_process()`` -> ``rte_eth_dev_callback_process()``
267 * ``_rte_eth_dev_reset`` -> ``rte_eth_dev_internal_reset()``
269 * ethdev: Modified field type of ``base`` and ``nb_queue`` in struct
270 ``rte_eth_dcb_tc_queue_mapping`` from ``uint8_t`` to ``uint16_t``.
271 As the data of ``uint8_t`` will be truncated when queue number under
272 a TC is greater than 256.
274 * vhost: Moved vDPA APIs from experimental to stable.
276 * rawdev: Added a structure size parameter to the functions
277 ``rte_rawdev_queue_setup()``, ``rte_rawdev_queue_conf_get()``,
278 ``rte_rawdev_info_get()`` and ``rte_rawdev_configure()``,
279 allowing limited driver type-checking and ABI compatibility.
281 * rawdev: Changed the return type of the function ``rte_dev_info_get()``
282 and the function ``rte_rawdev_queue_conf_get()``
283 from ``void`` to ``int`` allowing the return of error codes from drivers.
285 * rawdev: The running of a drivers ``selftest()`` function can now be done
286 using the ``rawdev_autotest`` command in the ``dpdk-test`` binary. This
287 command now calls the self-test function for each rawdev found on the
288 system, and does not require a specific command per device type.
289 Following this change, the ``ioat_rawdev_autotest`` command has been
290 removed as no longer needed.
292 * raw/ioat: As noted above, the ``rte_ioat_do_copies()`` and
293 ``rte_ioat_completed_copies()`` functions have been renamed to
294 ``rte_ioat_perform_ops()`` and ``rte_ioat_completed_ops()`` respectively.
296 * stack: the experimental tag has been dropped from the stack library, and its
297 interfaces are considered stable as of DPDK 20.11.
299 * bpf: ``RTE_BPF_XTYPE_NUM`` has been dropped from ``rte_bpf_xtype``.
305 .. This section should contain ABI changes. Sample format:
307 * sample: Add a short 1-2 sentence description of the ABI change
308 which was announced in the previous releases and made in this release.
309 Start with a scope label like "ethdev:".
310 Use fixed width quotes for ``function_names`` or ``struct_names``.
313 This section is a comment. Do not overwrite or remove it.
314 Also, make sure to start the actual text at the margin.
315 =======================================================
319 * Following device operation function pointers moved
320 from ``struct eth_dev_ops`` to ``struct rte_eth_dev``:
322 * ``eth_rx_queue_count_t rx_queue_count;``
323 * ``eth_rx_descriptor_done_t rx_descriptor_done;``
324 * ``eth_rx_descriptor_status_t rx_descriptor_status;``
325 * ``eth_tx_descriptor_status_t tx_descriptor_status;``
327 * ``struct eth_dev_ops`` is no more accessible by applications,
328 which was already internal data structure.
330 * ``ethdev`` internal functions are marked with ``__rte_internal`` tag.
336 .. This section should contain new known issues in this release. Sample format:
338 * **Add title in present tense with full stop.**
340 Add a short 1-2 sentence description of the known issue
341 in the present tense. Add information on any known workarounds.
343 This section is a comment. Do not overwrite or remove it.
344 Also, make sure to start the actual text at the margin.
345 =======================================================
351 .. This section should contain a list of platforms that were tested
356 * <vendor> platform with <vendor> <type of devices> combinations
361 * Other relevant details...
363 This section is a comment. Do not overwrite or remove it.
364 Also, make sure to start the actual text at the margin.
365 =======================================================