X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Fcompressdevs%2Fqat_comp.rst;h=475c4a9f9f1cd44feec4eb9a87f71c2ad8fec5a2;hb=6deb19e1b2d24ff95413d30147678d898283c67e;hp=6f583a4605d951ef995ea3c33ede2c20deff31a9;hpb=352332744c3a7ff9c0fb67fac4d4ccb663456078;p=dpdk.git diff --git a/doc/guides/compressdevs/qat_comp.rst b/doc/guides/compressdevs/qat_comp.rst index 6f583a4605..475c4a9f9f 100644 --- a/doc/guides/compressdevs/qat_comp.rst +++ b/doc/guides/compressdevs/qat_comp.rst @@ -29,15 +29,20 @@ Checksum generation: * CRC32, Adler and combined checksum +Stateful operation: + + * Decompression only + Limitations ----------- * Compressdev level 0, no compression, is not supported. -* Queue pairs are not thread-safe (that is, within a single queue pair, RX and TX from different lcores is not supported). +* Queue-pairs are thread-safe on Intel CPUs but Queues are not (that is, within a single + queue-pair all enqueues to the TX queue must be done from one thread and all dequeues + from the RX queue must be done from one thread, but enqueues and dequeues may be done + in different threads.) * No BSD support as BSD QAT kernel driver not available. -* When using Deflate dynamic huffman encoding for compression, the input size (op.src.length) - must be < CONFIG_RTE_PMD_QAT_COMP_IM_BUFFER_SIZE from the config file, - see :ref:`building_qat_config` for more details. +* Stateful compression is not supported. Installation