compress/qat: add fallback to fixed compression

[dpdk.git] / doc / guides / cryptodevs / qat.rst

diff --git a/doc/guides/cryptodevs/qat.rst b/doc/guides/cryptodevs/qat.rst
index b7eace1..beb6760 100644 (file)
--- a/doc/guides/cryptodevs/qat.rst
+++ b/doc/guides/cryptodevs/qat.rst
@@ -188,11 +188,11 @@ allocated while for GEN1 devices, 12 buffers are allocated, plus 1472 bytes over
 
        If the compressed output of a Deflate operation using Dynamic Huffman
         Encoding is too big to fit in an intermediate buffer, then the
-        operation will return RTE_COMP_OP_STATUS_ERROR and an error will be
-        displayed. Options for the application in this case
-        are to split the input data into smaller chunks and resubmit
-        in multiple operations or to configure QAT with
-        larger intermediate buffers.
+       operation will fall back to fixed compression rather than failing the operation.
+       To avoid this less performant case, applications should configure
+       the intermediate buffer size to be larger than the expected input data size
+       (compressed output size is usually unknown, so the only option is to make
+       larger than the input size).
 
 
 Device and driver naming