mirror of https://github.com/F-Stack/f-stack.git
45 lines
1.1 KiB
ReStructuredText
45 lines
1.1 KiB
ReStructuredText
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.. SPDX-License-Identifier: BSD-3-Clause
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Copyright(c) 2018 Intel Corporation.
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Intel(R) QuickAssist (QAT) Compression Poll Mode Driver
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=======================================================
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The QAT compression PMD provides poll mode compression & decompression driver
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support for the following hardware accelerator devices:
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* ``Intel QuickAssist Technology C62x``
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* ``Intel QuickAssist Technology C3xxx``
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Features
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--------
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QAT compression PMD has support for:
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Compression/Decompression algorithm:
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* DEFLATE - using Fixed and Dynamic Huffman encoding
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Window size support:
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* 32K
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Checksum generation:
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* CRC32, Adler and combined checksum
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Limitations
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-----------
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* Compressdev level 0, no compression, is not supported.
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* Queue pairs are not thread-safe (that is, within a single queue pair, RX and TX from different lcores is not supported).
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* No BSD support as BSD QAT kernel driver not available.
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Installation
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------------
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The QAT compression PMD is built by default with a standard DPDK build.
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It depends on a QAT kernel driver, see :ref:`building_qat`.
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