1 .. SPDX-License-Identifier: BSD-3-Clause
2 Copyright(c) 2018 Intel Corporation.
4 Intel(R) QuickAssist (QAT) Compression Poll Mode Driver
5 =======================================================
7 The QAT compression PMD provides poll mode compression & decompression driver
8 support for the following hardware accelerator devices:
10 * ``Intel QuickAssist Technology C62x``
11 * ``Intel QuickAssist Technology C3xxx``
12 * ``Intel QuickAssist Technology DH895x``
18 QAT compression PMD has support for:
20 Compression/Decompression algorithm:
22 * DEFLATE - using Fixed and Dynamic Huffman encoding
30 * CRC32, Adler and combined checksum
39 * Compressdev level 0, no compression, is not supported.
40 * Queue-pairs are thread-safe on Intel CPUs but Queues are not (that is, within a single
41 queue-pair all enqueues to the TX queue must be done from one thread and all dequeues
42 from the RX queue must be done from one thread, but enqueues and dequeues may be done
43 in different threads.)
44 * No BSD support as BSD QAT kernel driver not available.
45 * Stateful compression is not supported.
51 The QAT compression PMD is built by default with a standard DPDK build.
53 It depends on a QAT kernel driver, see :ref:`building_qat`.