[PATCH v7 2/2] doc: add user-space ethtool sample app guide

[Remy Horton <remy.horton@intel.com>]

Signed-off-by: Remy Horton <remy.horton@intel.com>
---
 doc/guides/rel_notes/release_2_2.rst |   1 +
 doc/guides/sample_app_ug/ethtool.rst | 160 +++++++++++++++++++++++++++++++++++
 doc/guides/sample_app_ug/index.rst   |   1 +
 3 files changed, 162 insertions(+)
 create mode 100644 doc/guides/sample_app_ug/ethtool.rst

diff --git a/doc/guides/rel_notes/release_2_2.rst b/doc/guides/rel_notes/release_2_2.rst
index 59dda59..bafebb3 100644
--- a/doc/guides/rel_notes/release_2_2.rst
+++ b/doc/guides/rel_notes/release_2_2.rst
@@ -187,6 +187,7 @@ Libraries
 Examples
 ~~~~~~~~
 
+* **ethtool: Added ethtool shim and sample application.**
 
 Other
 ~~~~~
diff --git a/doc/guides/sample_app_ug/ethtool.rst b/doc/guides/sample_app_ug/ethtool.rst
new file mode 100644
index 0000000..4d1697e
--- /dev/null
+++ b/doc/guides/sample_app_ug/ethtool.rst
@@ -0,0 +1,160 @@
+
+..  BSD LICENSE
+    Copyright(c) 2015 Intel Corporation. All rights reserved.
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+    * Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+    * Neither the name of Intel Corporation nor the names of its
+    contributors may be used to endorse or promote products derived
+    from this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Ethtool Sample Application
+==========================
+
+The Ethtool sample application shows an implementation of an
+ethtool-like API and provides a console environment that allows
+its use to query and change Ethernet card parameters. The sample
+is based upon a simple L2 frame reflector.
+
+Compiling the Application
+-------------------------
+
+To compile the application:
+
+#.  Go to the sample application directory:
+
+    .. code-block:: console
+
+        export RTE_SDK=/path/to/rte_sdk
+        cd ${RTE_SD}/examples/ethtool
+
+#.  Set the target (a default target is used if not specified). For example:
+
+    .. code-block:: console
+
+        export RTE_TARGET=x86_64-native-linuxapp-gcc
+
+    See the *DPDK Getting Started Guide* for possible RTE_TARGET values.
+
+#.  Build the application:
+
+    .. code-block:: console
+
+        make
+
+Running the Application
+-----------------------
+
+The application requires an available core for each port, plus one.
+The only available options are the standard ones for the EAL:
+
+.. code-block:: console
+
+    ./ethtool-app/ethtool-app/${RTE_TARGET}/ethtool [EAL options]
+
+Refer to the *DPDK Getting Started Guide* for general information on
+running applications and the Environment Abstraction Layer (EAL)
+options.
+
+Using the application
+---------------------
+
+The application is console-driven using the cmdline DPDK interface:
+
+.. code-block:: console
+
+        EthApp>
+
+From this interface the available commands and descriptions of what
+they do as as follows:
+
+* ``drvinfo``: Print driver info
+* ``eeprom``: Dump EEPROM to file
+* ``link``: Print port link states
+* ``macaddr``: Gets/sets MAC address
+* ``mtu``: Set NIC MTU
+* ``open``: Open port
+* ``pause``: Get/set port pause state
+* ``portstats``: Print port statistics
+* ``regs``: Dump port register(s) to file
+* ``ringparam``: Get/set ring parameters
+* ``rxmode``: Toggle port Rx mode
+* ``stop``: Stop port
+* ``validate``: Check that given MAC address is valid unicast address
+* ``vlan``: Add/remove VLAN id
+* ``quit``: Exit program
+
+
+Explanation
+-----------
+
+The sample program has two parts: A background `packet reflector`_
+that runs on a slave core, and a foreground `Ethtool Shell`_ that
+runs on the master core. These are described below.
+
+Packet Reflector
+~~~~~~~~~~~~~~~~
+
+The background packet reflector is intended to demonstrate basic
+packet processing on NIC ports controlled by the Ethtool shim.
+Each incoming MAC frame is rewritten so that it is returned to
+the sender, using the port in question's own MAC address as the
+source address, and is then sent out on the same port.
+
+Ethtool Shell
+~~~~~~~~~~~~~
+
+The foreground part of the Ethtool sample is a console-based
+interface that accepts commands as described in `using the
+application`_. Individual call-back functions handle the detail
+associated with each command, which make use of the functions
+defined in the `Ethtool interface`_ to the DPDK functions.
+
+Ethtool interface
+-----------------
+
+The Ethtool interface is built as a separate library, and implements
+the following functions:
+
+- ``rte_ethtool_get_drvinfo()``
+- ``rte_ethtool_get_regs_len()``
+- ``rte_ethtool_get_regs()``
+- ``rte_ethtool_get_link()``
+- ``rte_ethtool_get_eeprom_len()``
+- ``rte_ethtool_get_eeprom()``
+- ``rte_ethtool_set_eeprom()``
+- ``rte_ethtool_get_pauseparam()``
+- ``rte_ethtool_set_pauseparam()``
+- ``rte_ethtool_net_open()``
+- ``rte_ethtool_net_stop()``
+- ``rte_ethtool_net_get_mac_addr()``
+- ``rte_ethtool_net_set_mac_addr()``
+- ``rte_ethtool_net_validate_addr()``
+- ``rte_ethtool_net_change_mtu()``
+- ``rte_ethtool_net_get_stats64()``
+- ``rte_ethtool_net_vlan_rx_add_vid()``
+- ``rte_ethtool_net_vlan_rx_kill_vid()``
+- ``rte_ethtool_net_set_rx_mode()``
+- ``rte_ethtool_get_ringparam()``
+- ``rte_ethtool_set_ringparam()``
diff --git a/doc/guides/sample_app_ug/index.rst b/doc/guides/sample_app_ug/index.rst
index 9beedd9..086d3f2 100644
--- a/doc/guides/sample_app_ug/index.rst
+++ b/doc/guides/sample_app_ug/index.rst
@@ -41,6 +41,7 @@ Sample Applications User Guide
 
     intro
     cmd_line
+    ethtool
     exception_path
     hello_world
     skeleton
-- 
1.9.3