net/hns3: add runtime config to select IO burst function

[dpdk.git] / doc / guides / nics / hns3.rst

diff --git a/doc/guides/nics/hns3.rst b/doc/guides/nics/hns3.rst
index a62fcfd..ccd2f6f 100644 (file)
--- a/doc/guides/nics/hns3.rst
+++ b/doc/guides/nics/hns3.rst
@@ -4,7 +4,7 @@
 HNS3 Poll Mode Driver
 ===============================
 
-The hns3 PMD (librte_pmd_hns3) provides poll mode driver support
+The hns3 PMD (**librte_net_hns3**) provides poll mode driver support
 for the inbuilt Hisilicon Network Subsystem(HNS) network engine
 found in the Hisilicon Kunpeng 920 SoC.
 
@@ -29,31 +29,59 @@ Features of the HNS3 PMD are:
 - QinQ inserting
 - DCB
 - Scattered and gather for TX and RX
-- Flow director
+- Vector Poll mode driver
 - Dump register
 - SR-IOV VF
 - Multi-process
 - MAC/VLAN filter
 - MTU update
 - NUMA support
+- Generic flow API
 
 Prerequisites
 -------------
 - Get the information about Kunpeng920 chip using
-  `<http://www.hisilicon.com/en/Products/ProductList/Kunpeng>`_.
+  `<https://www.hisilicon.com/en/products/Kunpeng>`_.
 
 - Follow the DPDK :ref:`Getting Started Guide for Linux <linux_gsg>` to setup the basic DPDK environment.
 
-Pre-Installation Configuration
-------------------------------
 
-Config File Options
-~~~~~~~~~~~~~~~~~~~
+Runtime Config Options
+----------------------
+
+- ``rx_func_hint`` (default ``none``)
+
+  Used to select Rx burst function, supported value are ``vec``, ``sve``,
+  ``simple``, ``common``.
+  ``vec``, if supported use the ``vec`` Rx function which indicates the
+  default vector algorithm, neon for Kunpeng Arm platform.
+  ``sve``, if supported use the ``sve`` Rx function which indicates the
+  sve algorithm.
+  ``simple``, if supported use the ``simple`` Rx function which indicates
+  the scalar algorithm.
+  ``common``, if supported use the ``common`` Rx function which indicates
+  the scalar scattered algorithm.
+
+  When provided parameter is not supported, ``vec`` usage condition will
+  be first checked, if meets, use the ``vec``. Then, ``simple``, at last
+  ``common``.
+
+- ``tx_func_hint`` (default ``none``)
 
-The following options can be modified in the ``config`` file.
-Please note that enabling debugging options may affect system performance.
+  Used to select Tx burst function, supported value are ``vec``, ``sve``,
+  ``simple``, ``common``.
+  ``vec``, if supported use the ``vec`` Tx function which indicates the
+  default vector algorithm, neon for Kunpeng Arm platform.
+  ``sve``, if supported use the ``sve`` Tx function which indicates the
+  sve algorithm.
+  ``simple``, if supported use the ``simple`` Tx function which indicates
+  the scalar simple algorithm.
+  ``common``, if supported use the ``common`` Tx function which indicates
+  the scalar algorithm.
 
-- ``CONFIG_RTE_LIBRTE_HNS3_PMD`` (default ``y``)
+  When provided parameter is not supported, ``vec`` usage condition will
+  be first checked, if meets, use the ``vec``. Then, ``simple``, at last
+  ``common``.
 
 Driver compilation and testing
 ------------------------------