Hello, 11/07/2026 04:38, Shravan S (shrraj): > Hi DPDK Community, > > I am looking for clarification regarding LZ4 compression algorithm support > within the DPDK CompressDev framework. > While looking at the rte_comp.h API, I see references to rte_comp_lz4_params, > and the dpdk-test-compress-perf tool lists --algo lz4 as an eligible flag. > However, looking through the available software virtual devices (like the > ZLIB PMD or ISA-L PMD), they primarily target DEFLATE.
The drivers support is written in this table: https://doc.dpdk.org/guides/compressdevs/overview.html As you can see, only mlx5 supports LZ4 for its hardware. > My Questions: > > > 1. Is there an official, built-in software (SW) virtual PMD (compress_lz4) > available in DPDK for LZ4 compression/decompression? > 2. If a native SW PMD does not exist, are there plans to introduce a > reference software driver based on the liblz4 library? > 3. What is the recommended approach if I need to run LZ4 software > compression over vdevs alongside other DPDK processing pipelines? There is no plan regarding LZ4 in software, but you are welcome to propose a solution. > My Environment/Context: > > * DPDK Version: DPDK25.11 > * Operating System: Marvel CN106xx Octeon boards with ARM architecture. > > cat /etc/os-release > NAME=Buildroot > VERSION=2020.02.3-ge935b06c8-dirty > ID=buildroot > VERSION_ID=2020.02.3 > PRETTY_NAME="Buildroot 2020.02.3" > > uname -a > Linux oct2 5.4.210 #15 SMP PREEMPT Thu Aug 15 12:23:54 CST 2024 aarch64 > GNU/Linux > > > > * Target Use Case: We run user space TCP/IP Stack on Marvel CN106xx > Octeon ARM boards, as part of FCIP Solutions. > We need to enable LZ4 software compression support and DPDK > don't have software PMD support for LZ4 compression. > We are looking for support or any other approach to achieve > this implementation. > > Thanks and Regards > Shravan S
