eal: introduce internal wrappers for file operations

[dpdk.git] / doc / guides / compressdevs / qat_comp.rst

diff --git a/doc/guides/compressdevs/qat_comp.rst b/doc/guides/compressdevs/qat_comp.rst
index 167f816..475c4a9 100644 (file)
--- a/doc/guides/compressdevs/qat_comp.rst
+++ b/doc/guides/compressdevs/qat_comp.rst
@@ -9,6 +9,7 @@ support for the following hardware accelerator devices:
 
 * ``Intel QuickAssist Technology C62x``
 * ``Intel QuickAssist Technology C3xxx``
+* ``Intel QuickAssist Technology DH895x``
 
 
 Features
@@ -18,11 +19,7 @@ QAT compression PMD has support for:
 
 Compression/Decompression algorithm:
 
-    * DEFLATE
-
-Huffman code type:
-
-    * FIXED
+    * DEFLATE - using Fixed and Dynamic Huffman encoding
 
 Window size support:
 
@@ -32,18 +29,25 @@ Checksum generation:
 
     * CRC32, Adler and combined checksum
 
+Stateful operation:
+
+    * Decompression only
+
 Limitations
 -----------
 
-* Chained mbufs are not yet supported, therefore max data size which can be passed to the PMD in a single mbuf is 64K - 1. If data is larger than this it will need to be split up and sent as multiple operations.
-
 * Compressdev level 0, no compression, 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.
+* Stateful compression is not supported.
 
-* Dynamic Huffman encoding is not yet supported.
 
 Installation
 ------------
 
 The QAT compression PMD is built by default with a standard DPDK build.
 
-It depends on a QAT kernel driver, see :ref:`qat_kernel_installation`.
+It depends on a QAT kernel driver, see :ref:`building_qat`.