1.. SPDX-License-Identifier: BSD-3-Clause 2 Copyright(c) 2018 Intel Corporation. 3 4Intel(R) QuickAssist (QAT) Compression Poll Mode Driver 5======================================================= 6 7The QAT compression PMD provides poll mode compression & decompression driver 8support for the following hardware accelerator devices: 9 10* ``Intel QuickAssist Technology C62x`` 11* ``Intel QuickAssist Technology C3xxx`` 12 13 14Features 15-------- 16 17QAT compression PMD has support for: 18 19Compression/Decompression algorithm: 20 21 * DEFLATE - using Fixed and Dynamic Huffman encoding 22 23Window size support: 24 25 * 32K 26 27Checksum generation: 28 29 * CRC32, Adler and combined checksum 30 31Limitations 32----------- 33 34* Compressdev level 0, no compression, is not supported. 35* Queue pairs are not thread-safe (that is, within a single queue pair, RX and TX from different lcores is not supported). 36* No BSD support as BSD QAT kernel driver not available. 37 38 39Installation 40------------ 41 42The QAT compression PMD is built by default with a standard DPDK build. 43 44It depends on a QAT kernel driver, see :ref:`building_qat`. 45