--- /dev/null
+.. BSD LICENSE
+ Copyright(c) 2010-2014 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.
+
+Test Pipeline Application
+=========================
+
+The Test Pipeline application illustrates the use of the DPDK Packet Framework tool suite.
+Its purpose is to demonstrate the performance of single-table DPDK pipelines.
+
+Overview
+--------
+
+The application uses three CPU cores:
+
+* Core A ("RX core") receives traffic from the NIC ports and feeds core B with traffic through SW queues.
+
+* Core B ("Pipeline core") implements a single-table DPDK pipeline
+ whose type is selectable through specific command line parameter.
+ Core B receives traffic from core A through software queues,
+ processes it according to the actions configured in the table entries that
+ are hit by the input packets and feeds it to core C through another set of software queues.
+
+* Core C ("TX core") receives traffic from core B through software queues and sends it to the NIC ports for transmission.
+
+.. _figure_test_pipeline_app:
+
+.. figure:: img/test_pipeline_app.*
+
+ Test Pipeline Application
+
+
+Compiling the Application
+-------------------------
+
+#. Go to the app/test directory:
+
+ .. code-block:: console
+
+ export RTE_SDK=/path/to/rte_sdk
+ cd ${RTE_SDK}/app/test/test-pipeline
+
+#. Set the target (a default target is used if not specified):
+
+ .. code-block:: console
+
+ export RTE_TARGET=x86_64-native-linuxapp-gcc
+
+#. Build the application:
+
+ .. code-block:: console
+
+ make
+
+Running the Application
+-----------------------
+
+Application Command Line
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+The application execution command line is:
+
+.. code-block:: console
+
+ ./test-pipeline [EAL options] -- -p PORTMASK --TABLE_TYPE
+
+The -c EAL CPU core mask option has to contain exactly 3 CPU cores.
+The first CPU core in the core mask is assigned for core A, the second for core B and the third for core C.
+
+The PORTMASK parameter must contain 2 or 4 ports.
+
+Table Types and Behavior
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+:numref:`table_test_pipeline_1` describes the table types used and how they are populated.
+
+The hash tables are pre-populated with 16 million keys.
+For hash tables, the following parameters can be selected:
+
+* **Configurable key size implementation or fixed (specialized) key size implementation (e.g. hash-8-ext or hash-spec-8-ext).**
+ The key size specialized implementations are expected to provide better performance for 8-byte and 16-byte key sizes,
+ while the key-size-non-specialized implementation is expected to provide better performance for larger key sizes;
+
+* **Key size (e.g. hash-spec-8-ext or hash-spec-16-ext).**
+ The available options are 8, 16 and 32 bytes;
+
+* **Table type (e.g. hash-spec-16-ext or hash-spec-16-lru).**
+ The available options are ext (extendable bucket) or lru (least recently used).
+
+.. _table_test_pipeline_1:
+
+.. table:: Table Types
+
+ +-------+------------------------+----------------------------------------------------------+-------------------------------------------------------+
+ | **#** | **TABLE_TYPE** | **Description of Core B Table** | **Pre-added Table Entries** |
+ | | | | |
+ +=======+========================+==========================================================+=======================================================+
+ | 1 | none | Core B is not implementing a DPDK pipeline. | N/A |
+ | | | Core B is implementing a pass-through from its input set | |
+ | | | of software queues to its output set of software queues. | |
+ | | | | |
+ +-------+------------------------+----------------------------------------------------------+-------------------------------------------------------+
+ | 2 | stub | Stub table. Core B is implementing the same pass-through | N/A |
+ | | | functionality as described for the "none" option by | |
+ | | | using the DPDK Packet Framework by using one | |
+ | | | stub table for each input NIC port. | |
+ | | | | |
+ +-------+------------------------+----------------------------------------------------------+-------------------------------------------------------+
+ | 3 | hash-[spec]-8-lru | LRU hash table with 8-byte key size and 16 million | 16 million entries are successfully added to the |
+ | | | entries. | hash table with the following key format: |
+ | | | | |
+ | | | | [4-byte index, 4 bytes of 0] |
+ | | | | |
+ | | | | The action configured for all table entries is |
+ | | | | "Sendto output port", with the output port index |
+ | | | | uniformly distributed for the range of output ports. |
+ | | | | |
+ | | | | The default table rule (used in the case of a lookup |
+ | | | | miss) is to drop the packet. |
+ | | | | |
+ | | | | At run time, core A is creating the following lookup |
+ | | | | key and storing it into the packet meta data for |
+ | | | | core B to use for table lookup: |
+ | | | | |
+ | | | | [destination IPv4 address, 4 bytes of 0] |
+ | | | | |
+ +-------+------------------------+----------------------------------------------------------+-------------------------------------------------------+
+ | 4 | hash-[spec]-8-ext | Extendable bucket hash table with 8-byte key size | Same as hash-[spec]-8-lru table entries, above. |
+ | | | and 16 million entries. | |
+ | | | | |
+ +-------+------------------------+----------------------------------------------------------+-------------------------------------------------------+
+ | 5 | hash-[spec]-16-lru | LRU hash table with 16-byte key size and 16 million | 16 million entries are successfully added to the hash |
+ | | | entries. | table with the following key format: |
+ | | | | |
+ | | | | [4-byte index, 12 bytes of 0] |
+ | | | | |
+ | | | | The action configured for all table entries is |
+ | | | | "Send to output port", with the output port index |
+ | | | | uniformly distributed for the range of output ports. |
+ | | | | |
+ | | | | The default table rule (used in the case of a lookup |
+ | | | | miss) is to drop the packet. |
+ | | | | |
+ | | | | At run time, core A is creating the following lookup |
+ | | | | key and storing it into the packet meta data for core |
+ | | | | B to use for table lookup: |
+ | | | | |
+ | | | | [destination IPv4 address, 12 bytes of 0] |
+ | | | | |
+ +-------+------------------------+----------------------------------------------------------+-------------------------------------------------------+
+ | 6 | hash-[spec]-16-ext | Extendable bucket hash table with 16-byte key size | Same as hash-[spec]-16-lru table entries, above. |
+ | | | and 16 million entries. | |
+ | | | | |
+ +-------+------------------------+----------------------------------------------------------+-------------------------------------------------------+
+ | 7 | hash-[spec]-32-lru | LRU hash table with 32-byte key size and 16 million | 16 million entries are successfully added to the hash |
+ | | | entries. | table with the following key format: |
+ | | | | |
+ | | | | [4-byte index, 28 bytes of 0]. |
+ | | | | |
+ | | | | The action configured for all table entries is |
+ | | | | "Send to output port", with the output port index |
+ | | | | uniformly distributed for the range of output ports. |
+ | | | | |
+ | | | | The default table rule (used in the case of a lookup |
+ | | | | miss) is to drop the packet. |
+ | | | | |
+ | | | | At run time, core A is creating the following lookup |
+ | | | | key and storing it into the packet meta data for |
+ | | | | Lpmcore B to use for table lookup: |
+ | | | | |
+ | | | | [destination IPv4 address, 28 bytes of 0] |
+ | | | | |
+ +-------+------------------------+----------------------------------------------------------+-------------------------------------------------------+
+ | 8 | hash-[spec]-32-ext | Extendable bucket hash table with 32-byte key size | Same as hash-[spec]-32-lru table entries, above. |
+ | | | and 16 million entries. | |
+ | | | | |
+ +-------+------------------------+----------------------------------------------------------+-------------------------------------------------------+
+ | 9 | lpm | Longest Prefix Match (LPM) IPv4 table. | In the case of two ports, two routes |
+ | | | | are added to the table: |
+ | | | | |
+ | | | | [0.0.0.0/9 => send to output port 0] |
+ | | | | |
+ | | | | [0.128.0.0/9 => send to output port 1] |
+ | | | | |
+ | | | | In case of four ports, four entries are added to the |
+ | | | | table: |
+ | | | | |
+ | | | | [0.0.0.0/10 => send to output port 0] |
+ | | | | |
+ | | | | [0.64.0.0/10 => send to output port 1] |
+ | | | | |
+ | | | | [0.128.0.0/10 => send to output port 2] |
+ | | | | |
+ | | | | [0.192.0.0/10 => send to output port 3] |
+ | | | | |
+ | | | | The default table rule (used in the case of a lookup |
+ | | | | miss) is to drop the packet. |
+ | | | | |
+ | | | | At run time, core A is storing the IPv4 destination |
+ | | | | within the packet meta data to be later used by core |
+ | | | | B as the lookup key. |
+ | | | | |
+ +-------+------------------------+----------------------------------------------------------+-------------------------------------------------------+
+ | 10 | acl | Access Control List (ACL) table | In the case of two ports, two ACL rules are added to |
+ | | | | the table: |
+ | | | | |
+ | | | | [priority = 0 (highest), |
+ | | | | |
+ | | | | IPv4 source = ANY, |
+ | | | | |
+ | | | | IPv4 destination = 0.0.0.0/9, |
+ | | | | |
+ | | | | L4 protocol = ANY, |
+ | | | | |
+ | | | | TCP source port = ANY, |
+ | | | | |
+ | | | | TCP destination port = ANY |
+ | | | | |
+ | | | | => send to output port 0] |
+ | | | | |
+ | | | | |
+ | | | | [priority = 0 (highest), |
+ | | | | |
+ | | | | IPv4 source = ANY, |
+ | | | | |
+ | | | | IPv4 destination = 0.128.0.0/9, |
+ | | | | |
+ | | | | L4 protocol = ANY, |
+ | | | | |
+ | | | | TCP source port = ANY, |
+ | | | | |
+ | | | | TCP destination port = ANY |
+ | | | | |
+ | | | | => send to output port 0]. |
+ | | | | |
+ | | | | |
+ | | | | The default table rule (used in the case of a lookup |
+ | | | | miss) is to drop the packet. |
+ | | | | |
+ +-------+------------------------+----------------------------------------------------------+-------------------------------------------------------+
+
+Input Traffic
+~~~~~~~~~~~~~
+
+Regardless of the table type used for the core B pipeline,
+the same input traffic can be used to hit all table entries with uniform distribution,
+which results in uniform distribution of packets sent out on the set of output NIC ports.
+The profile for input traffic is TCP/IPv4 packets with:
+
+* destination IP address as A.B.C.D with A fixed to 0 and B, C,D random
+
+* source IP address fixed to 0.0.0.0
+
+* destination TCP port fixed to 0
+
+* source TCP port fixed to 0
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