doc: fix spelling reported by aspell in guides

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

diff --git a/doc/guides/compressdevs/overview.rst b/doc/guides/compressdevs/overview.rst
index ca37de1756aede4766741ad1f1c058f317dfbc78..809e4e6e76298349b91c14958210051f650b9552 100644 (file)
--- a/doc/guides/compressdevs/overview.rst
+++ b/doc/guides/compressdevs/overview.rst
@@ -10,3 +10,23 @@ Supported Feature Flags
 .. _table_compression_pmd_features:
 
 .. include:: overview_feature_table.txt
+
+.. Note::
+
+   - "Pass-through" feature flag refers to the ability of the PMD
+     to let input buffers pass-through it, copying the input to the output,
+     without making any modifications to it (no compression done).
+
+   - "OOP SGL In SGL Out" feature flag stands for
+     "Out-of-place Scatter-gather list Input, Scatter-gather list Output",
+     which means PMD supports different scatter-gather styled input and output buffers
+     (i.e. both can consists of multiple segments).
+
+   - "OOP SGL In LB Out" feature flag stands for
+     "Out-of-place Scatter-gather list Input, Linear Buffers Output",
+     which means PMD supports input from scatter-gathered styled buffers, outputting linear buffers
+     (i.e. single segment).
+
+   - "OOP LB In SGL Out" feature flag stands for
+     "Out-of-place Linear Buffers Input, Scatter-gather list Output",
+     which means PMD supports input from linear buffer, outputting scatter-gathered styled buffers.