* [dpdk-dev] [PATCH] doc/ip_pipeline: update sample app user guide
@ 2018-05-24 11:05 Jasvinder Singh
2018-05-24 11:59 ` [dpdk-dev] [PATCH v2] " Jasvinder Singh
0 siblings, 1 reply; 3+ messages in thread
From: Jasvinder Singh @ 2018-05-24 11:05 UTC (permalink / raw)
To: dev; +Cc: cristian.dumitrescu, john.mcnamara, marko.kovacevic
Update sample app user guide with ip pipeline documentation.
Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Signed-off-by: Jasvinder Singh <jasvinder.singh@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
---
doc/guides/sample_app_ug/ip_pipeline.rst | 1448 +++++++++---------------------
1 file changed, 403 insertions(+), 1045 deletions(-)
diff --git a/doc/guides/sample_app_ug/ip_pipeline.rst b/doc/guides/sample_app_ug/ip_pipeline.rst
index 69af6b8..660798d 100644
--- a/doc/guides/sample_app_ug/ip_pipeline.rst
+++ b/doc/guides/sample_app_ug/ip_pipeline.rst
@@ -1,5 +1,5 @@
.. SPDX-License-Identifier: BSD-3-Clause
- Copyright(c) 2015-2016 Intel Corporation.
+ Copyright(c) 2015-2018 Intel Corporation.
Internet Protocol (IP) Pipeline Application
===========================================
@@ -8,1163 +8,521 @@ Application overview
--------------------
The *Internet Protocol (IP) Pipeline* application is intended to be a vehicle for rapid development of packet processing
-applications running on multi-core CPUs.
+applications on multi-core CPUs.
-The application provides a library of reusable functional blocks called pipelines.
-These pipelines can be seen as prefabricated blocks that can be instantiated and inter-connected through packet queues
+Following OpenFlow and P4 design principles, the application can be used to create functional blocks called pipelines out
+of input/output ports, tables and actions in a modular way. Multiple pipelines can be inter-connected through packet queues
to create complete applications (super-pipelines).
-Pipelines are created and inter-connected through the application configuration file.
-By using different configuration files, different applications are effectively created, therefore this application
-can be seen as an application generator.
-The configuration of each pipeline can be updated at run-time through the application Command Line Interface (CLI).
+The pipelines are mapped to application threads, with each pipeline executed by a single thread and each thread able to run
+one or several pipelines. The possibilities of creating pipelines out of ports, tables and actions, connecting multiple
+pipelines together and mapping the pipelines to execution threads are endless, therefore this application can be seen as
+a true application generator.
-Main application components are:
+Pipelines are created and managed through Command Line Interface (CLI):
-**A Library of reusable pipelines**
+ * Any standard TCP client (e.g. telnet, netcat, custom script, etc) is typically able to connect to the application, send
+ commands through the network and wait for the response before pushing the next command.
- * Each pipeline represents a functional block, e.g. flow classification, firewall, routing, master, etc.
-
- * Each pipeline type can be instantiated several times in the same application, which each instance configured
- separately and mapped to a single CPU core.
- Each CPU core can run one or several pipeline instances, which can be of same or different type.
-
- * Pipeline instances are inter-connected through packet queues (for packet processing) and message queues
- (for run-time configuration).
-
- * Pipelines are implemented using DPDK Packet Framework.
-
- * More pipeline types can always be built and added to the existing pipeline types.
-
-**The Configuration file**
-
- * The configuration file defines the application structure.
- By using different configuration files, different applications are created.
-
- * All the application resources are created and configured through the application configuration file:
- pipeline instances, buffer pools, links (i.e. network interfaces), hardware device RX/TX queues,
- software queues, traffic manager devices, EAL startup arguments, etc.
-
- * The configuration file syntax is “define by reference”, meaning that resources are defined as they are referenced.
- First time a resource name is detected, it is registered with default parameters.
- Optionally, the resource parameters can be further refined through a configuration file section dedicated to
- that resource.
-
- * Command Line Interface (CLI)
-
-**Global CLI commands: link configuration, etc.**
-
- * Common pipeline CLI commands: ping (keep-alive), statistics, etc.
-
- * Pipeline type specific CLI commands: used to configure instances of specific pipeline type.
- These commands are registered with the application when the pipeline type is registered.
- For example, the commands for routing pipeline instances include: route add, route delete, route list, etc.
-
- * CLI commands can be grouped into scripts that can be invoked at initialization and at runtime.
-
-
-Design goals
-------------
-
-
-Rapid development
-~~~~~~~~~~~~~~~~~
-
-This application enables rapid development through quick connectivity of standard components called pipelines.
-These components are built using DPDK Packet Framework and encapsulate packet processing features at different levels:
-ports, tables, actions, pipelines and complete applications.
-
-Pipeline instances are instantiated, configured and inter-connected through low complexity configuration files loaded
-during application initialization.
-Each pipeline instance is mapped to a single CPU core, with each CPU core able to run one or multiple pipeline
-instances of same or different types. By loading a different configuration file, a different application is
-effectively started.
-
-
-Flexibility
-~~~~~~~~~~~
-
-Each packet processing application is typically represented as a chain of functional stages which is often called
-the functional pipeline of the application.
-These stages are mapped to CPU cores to create chains of CPU cores (pipeline model), clusters of CPU cores
-(run-to-completion model) or chains of clusters of CPU cores (hybrid model).
-
-This application allows all the above programming models.
-By applying changes to the configuration file, the application provides the flexibility to reshuffle its
-building blocks in different ways until the configuration providing the best performance is identified.
-
-
-Move pipelines around
-^^^^^^^^^^^^^^^^^^^^^
-
-The mapping of pipeline instances to CPU cores can be reshuffled through the configuration file.
-One or several pipeline instances can be mapped to the same CPU core.
-
-.. _figure_ip_pipelines_1:
-
-.. figure:: img/ip_pipelines_1.*
-
- Example of moving pipeline instances across different CPU cores
-
-
-Move tables around
-^^^^^^^^^^^^^^^^^^
-
-There is some degree of flexibility for moving tables from one pipeline instance to another.
-Based on the configuration arguments passed to each pipeline instance in the configuration file, specific tables
-can be enabled or disabled.
-This way, a specific table can be “moved” from pipeline instance A to pipeline instance B by simply disabling its
-associated functionality for pipeline instance A while enabling it for pipeline instance B.
-
-Due to requirement to have simple syntax for the configuration file, moving tables across different pipeline
-instances is not as flexible as the mapping of pipeline instances to CPU cores, or mapping actions to pipeline tables.
-Complete flexibility in moving tables from one pipeline to another could be achieved through a complex pipeline
-description language that would detail the structural elements of the pipeline (ports, tables and actions) and
-their connectivity, resulting in complex syntax for the configuration file, which is not acceptable.
-Good configuration file readability through simple syntax is preferred.
-
-*Example*: the IP routing pipeline can run the routing function only (with ARP function run by a different
-pipeline instance), or it can run both the routing and ARP functions as part of the same pipeline instance.
-
-
-.. _figure_ip_pipelines_2:
-
-.. figure:: img/ip_pipelines_2.*
-
- Example of moving tables across different pipeline instances
-
-
-Move actions around
-^^^^^^^^^^^^^^^^^^^
-
-When it makes sense, packet processing actions can be moved from one pipeline instance to another.
-Based on the configuration arguments passed to each pipeline instance in the configuration file, specific actions
-can be enabled or disabled.
-This way, a specific action can be "moved" from pipeline instance A to pipeline instance B by simply disabling its
-associated functionality for pipeline instance A while enabling it for pipeline instance B.
-
-*Example*: The flow actions of accounting, traffic metering, application identification, NAT, etc can be run as part
-of the flow classification pipeline instance or split across several flow actions pipeline instances, depending on
-the number of flow instances and their compute requirements.
-
-
-.. _figure_ip_pipelines_3:
-
-.. figure:: img/ip_pipelines_3.*
-
- Example of moving actions across different tables and pipeline instances
-
-
-Performance
-~~~~~~~~~~~
-
-Performance of the application is the highest priority requirement.
-Flexibility is not provided at the expense of performance.
-
-The purpose of flexibility is to provide an incremental development methodology that allows monitoring the
-performance evolution:
-
-* Apply incremental changes in the configuration (e.g. mapping on pipeline instances to CPU cores)
- in order to identify the configuration providing the best performance for a given application;
-
-* Add more processing incrementally (e.g. by enabling more actions for specific pipeline instances) until
- the application is feature complete while checking the performance impact at each step.
-
-
-Debug capabilities
-~~~~~~~~~~~~~~~~~~
-
-The application provides a significant set of debug capabilities:
-
-* Command Line Interface (CLI) support for statistics polling: pipeline instance ping (keep-alive checks),
- pipeline instance statistics per input port/output port/table, link statistics, etc;
-
-* Logging: Turn on/off application log messages based on priority level;
+ * All the application objects are created and managed through CLI commands:
+ * 'Primitive' objects used to create pipeline ports: memory pools, links (i.e. network interfaces), SW queues, traffic managers, etc.
+ * Action profiles: used to define the actions to be executed by pipeline input/output ports and tables.
+ * Pipeline components: input/output ports, tables, pipelines, mapping of pipelines to execution threads.
Running the application
-----------------------
The application startup command line is::
- ip_pipeline [-f CONFIG_FILE] [-s SCRIPT_FILE] -p PORT_MASK [-l LOG_LEVEL]
+ ip_pipeline [EAL_ARGS] -- [-s SCRIPT_FILE] [-h HOST] [-p PORT]
The application startup arguments are:
-``-f CONFIG_FILE``
-
- * Optional: Yes
-
- * Default: ``./config/ip_pipeline.cfg``
-
- * Argument: Path to the configuration file to be loaded by the application.
- Please refer to the :ref:`ip_pipeline_configuration_file` for details on how to write the configuration file.
-
``-s SCRIPT_FILE``
* Optional: Yes
* Default: Not present
- * Argument: Path to the CLI script file to be run by the master pipeline at application startup.
- No CLI script file will be run at startup if this argument is not present.
-
-``-p PORT_MASK``
-
- * Optional: No
-
- * Default: N/A
+ * Argument: Path to the CLI script file to be run at application startup.
+ No CLI script file will run at startup if this argument is not present.
- * Argument: Hexadecimal mask of NIC port IDs to be used by the application.
- First port enabled in this mask will be referenced as LINK0 as part of the application configuration file,
- next port as LINK1, etc.
-
-``-l LOG_LEVEL``
+``-h HOST``
* Optional: Yes
- * Default: 1 (High priority)
-
- * Argument: Log level to determine which application messages are to be printed to standard output.
- Available log levels are: 0 (None), 1 (High priority), 2 (Low priority).
- Only application messages whose priority is higher than or equal to the application log level will be printed.
-
-
-Application stages
-------------------
-
+ * Default: ``0.0.0.0``
-Configuration
-~~~~~~~~~~~~~
+ * Argument: IP Address of the host running ip pipeline application to be used by
+ remote TCP based client (telnet, netcat, etc.) for connection.
-During this stage, the application configuration file is parsed and its content is loaded into the application data
-structures.
-In case of any configuration file parse error, an error message is displayed and the application is terminated.
-Please refer to the :ref:`ip_pipeline_configuration_file` for a description of the application configuration file format.
+``-p PORT``
+ * Optional: Yes
-Configuration checking
-~~~~~~~~~~~~~~~~~~~~~~
-
-In the absence of any parse errors, the loaded content of application data structures is checked for overall consistency.
-In case of any configuration check error, an error message is displayed and the application is terminated.
-
-
-Initialization
-~~~~~~~~~~~~~~
-
-During this stage, the application resources are initialized and the handles to access them are saved into the
-application data structures.
-In case of any initialization error, an error message is displayed and the application is terminated.
-
-The typical resources to be initialized are: pipeline instances, buffer pools, links (i.e. network interfaces),
-hardware device RX/TX queues, software queues, traffic management devices, etc.
-
-
-.. _ip_pipeline_runtime:
-
-Run-time
-~~~~~~~~
-
-Each CPU core runs the pipeline instances assigned to it in time sharing mode and in round robin order:
-
-1. *Packet processing task*: The pipeline run-time code is typically a packet *processing* task built on top of
- DPDK Packet Framework rte_pipeline library, which reads bursts of packets from the pipeline input ports,
- performs table lookups and executes the identified actions for all tables in the pipeline, with packet
- eventually written to pipeline output ports or dropped.
-
-2. *Message handling task*: Each CPU core will also periodically execute the *message handling* code of each
- of the pipelines mapped to it.
- The pipeline message handling code is processing the messages that are pending in the pipeline input message
- queues, which are typically sent by the master CPU core for the on-the-fly pipeline configuration: check
- that pipeline is still alive (ping), add/delete entries in the pipeline tables, get statistics, etc.
- The frequency of executing the message handling code is usually much smaller than the frequency of executing
- the packet processing work.
+ * Default: ``8086``
-Please refer to the :ref:`ip_pipeline_pipeline_section` for more details about the application pipeline module encapsulation.
+ * Argument: TCP port number at which the ip pipeline is running.
+ This port number should be used by remote TCP client (such as telnet, netcat, etc.) to connect to host application.
-.. _ip_pipeline_configuration_file:
+Refer to *DPDK Getting Started Guide* for general information on running applications and the Environment Abstraction Layer (EAL) options.
-Configuration file syntax
--------------------------
+The following is an example command to run ip pipeline application configured for layer 2 forwarding:
-Syntax overview
-~~~~~~~~~~~~~~~
+.. code-block:: console
-The syntax of the configuration file is designed to be simple, which favors readability.
-The configuration file is parsed using the DPDK library librte_cfgfile, which supports simple
-`INI file format <http://en.wikipedia.org/wiki/INI_file>`__ for configuration files.
+ $ ./build/ip_pipeline -c 0x3 -- -s examples/route_ecmp.cli
-As result, the configuration file is split into several sections, with each section containing one or more entries.
-The scope of each entry is its section, and each entry specifies a variable that is assigned a specific value.
-Any text after the ``;`` character is considered a comment and is therefore ignored.
+The application should start successfully and display as follows:
-The following are application specific: number of sections, name of each section, number of entries of each section,
-name of the variables used for each section entry, the value format (e.g. signed/unsigned integer, string, etc)
-and range of each section entry variable.
+.. code-block:: console
-Generic example of configuration file section:
+ EAL: Detected 40 lcore(s)
+ EAL: Detected 2 NUMA nodes
+ EAL: Multi-process socket /var/run/.rte_unix
+ EAL: Probing VFIO support...
+ EAL: PCI device 0000:02:00.0 on NUMA socket 0
+ EAL: probe driver: 8086:10fb net_ixgbe
+ ...
-.. code-block:: ini
+To run remote client (e.g. telnet) to communicate with the ip pipeline application:
- [<section_name>]
+.. code-block:: console
- <variable_name_1> = <value_1>
+ $ telnet 127.0.0.1 8086
- ; ...
+When running a telnet client as above, command prompt is displayed:
- <variable_name_N> = <value_N>
+.. code-block:: console
+ Trying 127.0.0.1...
+ Connected to 127.0.0.1.
+ Escape character is '^]'.
-Application resources present in the configuration file
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ Welcome to IP Pipeline!
-.. _table_ip_pipelines_resource_name:
+ pipeline>
-.. tabularcolumns:: |p{4cm}|p{6cm}|p{6cm}|
+Once application and telnet client start running, messages can be sent from client to application.
+At any stage, telnet client can be terminated using the quit command.
-.. table:: Application resource names in the configuration file
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Resource type | Format | Examples |
- +============================+=============================+=================================================+
- | Pipeline | ``PIPELINE<ID>`` | ``PIPELINE0``, ``PIPELINE1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Mempool | ``MEMPOOL<ID>`` | ``MEMPOOL0``, ``MEMPOOL1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Link (network interface) | ``LINK<ID>`` | ``LINK0``, ``LINK1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Link RX queue | ``RXQ<LINK_ID>.<QUEUE_ID>`` | ``RXQ0.0``, ``RXQ1.5`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Link TX queue | ``TXQ<LINK_ID>.<QUEUE_ID>`` | ``TXQ0.0``, ``TXQ1.5`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Software queue | ``SWQ<ID>`` | ``SWQ0``, ``SWQ1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Traffic Manager | ``TM<LINK_ID>`` | ``TM0``, ``TM1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | KNI (kernel NIC interface) | ``KNI<LINK_ID>`` | ``KNI0``, ``KNI1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Source | ``SOURCE<ID>`` | ``SOURCE0``, ``SOURCE1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Sink | ``SINK<ID>`` | ``SINK0``, ``SINK1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Message queue | ``MSGQ<ID>`` | ``MSGQ0``, ``MSGQ1``, |
- | | ``MSGQ-REQ-PIPELINE<ID>`` | ``MSGQ-REQ-PIPELINE2``, ``MSGQ-RSP-PIPELINE2,`` |
- | | ``MSGQ-RSP-PIPELINE<ID>`` | ``MSGQ-REQ-CORE-s0c1``, ``MSGQ-RSP-CORE-s0c1`` |
- | | ``MSGQ-REQ-CORE-<CORE_ID>`` | |
- | | ``MSGQ-RSP-CORE-<CORE_ID>`` | |
- +----------------------------+-----------------------------+-------------------------------------------------+
-
-``LINK`` instances are created implicitly based on the ``PORT_MASK`` application startup argument.
-``LINK0`` is the first port enabled in the ``PORT_MASK``, port 1 is the next one, etc.
-The LINK ID is different than the DPDK PMD-level NIC port ID, which is the actual position in the bitmask mentioned above.
-For example, if bit 5 is the first bit set in the bitmask, then ``LINK0`` is having the PMD ID of 5.
-This mechanism creates a contiguous LINK ID space and isolates the configuration file against changes in the board
-PCIe slots where NICs are plugged in.
-
-``RXQ``, ``TXQ``, ``TM`` and ``KNI`` instances have the LINK ID as part of their name.
-For example, ``RXQ2.1``, ``TXQ2.1`` and ``TM2`` are all associated with ``LINK2``.
-
-
-Rules to parse the configuration file
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-The main rules used to parse the configuration file are:
-
-1. Application resource name determines the type of resource based on the name prefix.
-
- *Example*: all software queues need to start with ``SWQ`` prefix, so ``SWQ0`` and ``SWQ5`` are valid software
- queue names.
-
-2. An application resource is defined by creating a configuration file section with its name.
- The configuration file section allows fine tuning on any of the resource parameters.
- Some resource parameters are mandatory, in which case it is required to have them specified as part of the
- section, while some others are optional, in which case they get assigned their default value when not present.
-
- *Example*: section ``SWQ0`` defines a software queue named SWQ0, whose parameters are detailed as part of this section.
-
-3. An application resource can also be defined by referencing it.
- Referencing a resource takes place by simply using its name as part of the value assigned to a variable in any
- configuration file section.
- In this case, the resource is registered with all its parameters having their default values.
- Optionally, a section with the resource name can be added to the configuration file to fine tune some or all
- of the resource parameters.
-
- *Example*: in section ``PIPELINE3``, variable ``pktq_in`` includes ``SWQ5`` as part of its list, which results
- in defining a software queue named ``SWQ5``; when there is no ``SWQ5`` section present in the configuration file,
- ``SWQ5`` gets registered with default parameters.
-
-
-.. _ip_pipeline_pipeline_section:
-
-PIPELINE section
-~~~~~~~~~~~~~~~~
-
-.. _table_ip_pipelines_pipeline_section_1:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{1.5cm}|
-
-.. table:: Configuration file PIPELINE section (1/2)
-
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | Section | Description | Optional | Range | Default value |
- +===============+===========================================================+===============+========================+================+
- | type | Pipeline type. Defines the functionality to be | NO | See "List | N/A |
- | | executed. | | of pipeline types" | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | core | CPU core to run the current pipeline. | YES | See "CPU Core | CPU socket 0, |
- | | | | notation" | core 0, |
- | | | | | hyper-thread 0 |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | pktq_in | Packet queues to serve as input ports for the | YES | List of input | Empty list |
- | | current pipeline instance. The acceptable packet | | packet queue IDs | |
- | | queue types are: ``RXQ``, ``SWQ``, ``TM`` and ``SOURCE``. | | | |
- | | First device in this list is used as pipeline input port | | | |
- | | 0, second as pipeline input port 1, etc. | | | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | pktq_out | Packet queues to serve as output ports for the | YES | List of output | Empty list |
- | | current pipeline instance. The acceptable packet | | packet queue IDs. | |
- | | queue types are: ``TXQ``, ``SWQ``, ``TM`` and ``SINK``. | | | |
- | | First device in this list is used as pipeline output | | | |
- | | port 0, second as pipeline output port 1, etc. | | | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
-
-.. _table_ip_pipelines_pipeline_section_2:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{1.5cm}|
-
-.. table:: Configuration file PIPELINE section (2/2)
-
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | Section | Description | Optional | Range | Default value |
- +===============+===========================================================+===============+========================+================+
- | msgq_in | Input message queues. These queues contain | YES | List of message | Empty list |
- | | request messages that need to be handled by the | | queue IDs | |
- | | current pipeline instance. The type and format of | | | |
- | | request messages is defined by the pipeline type. | | | |
- | | For each pipeline instance, there is an input | | | |
- | | message queue defined implicitly, whose name is: | | | |
- | | ``MSGQ-REQ-<PIPELINE_ID>``. This message queue | | | |
- | | should not be mentioned as part of msgq_in list. | | | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | msgq_out | Output message queues. These queues are used by | YES | List of message | Empty list |
- | | the current pipeline instance to write response | | queue IDs | |
- | | messages as result of request messages being | | | |
- | | handled. The type and format of response | | | |
- | | messages is defined by the pipeline type. | | | |
- | | For each pipeline instance, there is an output | | | |
- | | message queue defined implicitly, whose name is: | | | |
- | | ``MSGQ-RSP-<PIPELINE_ID>``. This message queue | | | |
- | | should not be mentioned as part of msgq_out list. | | | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | timer_period | Time period, measured in milliseconds, | YES | milliseconds | 1 ms |
- | | for handling the input message queues. | | | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | <any other> | Arguments to be passed to the current pipeline | Depends on | Depends on | Depends on |
- | | instance. Format of the arguments, their type, | pipeline type | pipeline type | pipeline type |
- | | whether each argument is optional or mandatory | | | |
- | | and its default value (when optional) are defined | | | |
- | | by the pipeline type. | | | |
- | | The value of the arguments is applicable to the | | | |
- | | current pipeline instance only. | | | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
-
-
-CPU core notation
-^^^^^^^^^^^^^^^^^
-
-The CPU Core notation is::
-
- <CPU core> ::= [s|S<CPU socket ID>][c|C]<CPU core ID>[h|H]
-
-For example::
-
- CPU socket 0, core 0, hyper-thread 0: 0, c0, s0c0
-
- CPU socket 0, core 0, hyper-thread 1: 0h, c0h, s0c0h
-
- CPU socket 3, core 9, hyper-thread 1: s3c9h
-
-
-MEMPOOL section
-~~~~~~~~~~~~~~~
+Application stages
+------------------
-.. _table_ip_pipelines_mempool_section:
-
-.. tabularcolumns:: |p{2.5cm}|p{6cm}|p{1.5cm}|p{1.5cm}|p{3cm}|
-
-.. table:: Configuration file MEMPOOL section
-
- +---------------+-----------------------------------------------+----------+----------+---------------------------+
- | Section | Description | Optional | Type | Default value |
- +===============+===============================================+==========+==========+===========================+
- | buffer_size | Buffer size (in bytes) for the current | YES | uint32_t | 2048 |
- | | buffer pool. | | | + sizeof(struct rte_mbuf) |
- | | | | | + HEADROOM |
- +---------------+-----------------------------------------------+----------+----------+---------------------------+
- | pool_size | Number of buffers in the current buffer pool. | YES | uint32_t | 32K |
- +---------------+-----------------------------------------------+----------+----------+---------------------------+
- | cache_size | Per CPU thread cache size (in number of | YES | uint32_t | 256 |
- | | buffers) for the current buffer pool. | | | |
- +---------------+-----------------------------------------------+----------+----------+---------------------------+
- | cpu | CPU socket ID where to allocate memory for | YES | uint32_t | 0 |
- | | the current buffer pool. | | | |
- +---------------+-----------------------------------------------+----------+----------+---------------------------+
-
-
-LINK section
-~~~~~~~~~~~~
-
-.. _table_ip_pipelines_link_section:
-
-.. tabularcolumns:: |p{3cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{2cm}|
-
-.. table:: Configuration file LINK section
-
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | Section entry | Description | Optional | Type | Default value |
- +=================+==============================================+==========+==========+===================+
- | arp_q | NIC RX queue where ARP packets should | YES | 0 .. 127 | 0 (default queue) |
- | | be filtered. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | tcp_syn_local_q | NIC RX queue where TCP packets with SYN | YES | 0 .. 127 | 0 (default queue) |
- | | flag should be filtered. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | ip_local_q | NIC RX queue where IP packets with local | YES | 0 .. 127 | 0 (default queue) |
- | | destination should be filtered. | | | |
- | | When TCP, UDP and SCTP local queues are | | | |
- | | defined, they take higher priority than this | | | |
- | | queue. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | tcp_local_q | NIC RX queue where TCP packets with local | YES | 0 .. 127 | 0 (default queue) |
- | | destination should be filtered. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | udp_local_q | NIC RX queue where TCP packets with local | YES | 0 .. 127 | 0 (default queue) |
- | | destination should be filtered. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | sctp_local_q | NIC RX queue where TCP packets with local | YES | 0 .. 127 | 0 (default queue) |
- | | destination should be filtered. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | promisc | Indicates whether current link should be | YES | YES/NO | YES |
- | | started in promiscuous mode. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
-
-
-RXQ section
-~~~~~~~~~~~
-
-.. _table_ip_pipelines_rxq_section:
-
-.. tabularcolumns:: |p{3cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{2cm}|
-
-.. table:: Configuration file RXQ section
-
- +---------------+--------------------------------------------+----------+----------+---------------+
- | Section | Description | Optional | Type | Default value |
- +===============+============================================+==========+==========+===============+
- | mempool | Mempool to use for buffer allocation for | YES | uint32_t | MEMPOOL0 |
- | | current NIC RX queue. The mempool ID has | | | |
- | | to be associated with a valid instance | | | |
- | | defined in the mempool entry of the global | | | |
- | | section. | | | |
- +---------------+--------------------------------------------+----------+----------+---------------+
- | Size | NIC RX queue size (number of descriptors) | YES | uint32_t | 128 |
- +---------------+--------------------------------------------+----------+----------+---------------+
- | burst | Read burst size (number of descriptors) | YES | uint32_t | 32 |
- +---------------+--------------------------------------------+----------+----------+---------------+
-
-
-TXQ section
-~~~~~~~~~~~
-
-.. _table_ip_pipelines_txq_section:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{2cm}|p{1.5cm}|
-
-.. table:: Configuration file TXQ section
-
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | Section | Description | Optional | Type | Default value |
- +===============+==============================================+==========+==================+===============+
- | size | NIC TX queue size (number of descriptors) | YES | uint32_t | 512 |
- | | | | power of 2 | |
- | | | | > 0 | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | burst | Write burst size (number of descriptors) | YES | uint32_t | 32 |
- | | | | power of 2 | |
- | | | | 0 < burst < size | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | dropless | When dropless is set to NO, packets can be | YES | YES/NO | NO |
- | | dropped if not enough free slots are | | | |
- | | currently available in the queue, so the | | | |
- | | write operation to the queue is non- | | | |
- | | blocking. | | | |
- | | When dropless is set to YES, packets cannot | | | |
- | | be dropped if not enough free slots are | | | |
- | | currently available in the queue, so the | | | |
- | | write operation to the queue is blocking, as | | | |
- | | the write operation is retried until enough | | | |
- | | free slots become available and all the | | | |
- | | packets are successfully written to the | | | |
- | | queue. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | n_retries | Number of retries. Valid only when dropless | YES | uint32_t | 0 |
- | | is set to YES. When set to 0, it indicates | | | |
- | | unlimited number of retries. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
-
-
-SWQ section
-~~~~~~~~~~~
-
-.. _table_ip_pipelines_swq_section:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{1.5cm}|
-
-.. table:: Configuration file SWQ section
-
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | Section | Description | Optional | Type | Default value |
- +===============+==============================================+==========+==================+===============+
- | size | Queue size (number of packets) | YES | uint32_t | 256 |
- | | | | power of 2 | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | burst_read | Read burst size (number of packets) | YES | uint32_t | 32 |
- | | | | power of 2 | |
- | | | | 0 < burst < size | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | burst_write | Write burst size (number of packets) | YES | uint32_t | 32 |
- | | | | power of 2 | |
- | | | | 0 < burst < size | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | dropless | When dropless is set to NO, packets can be | YES | YES/NO | NO |
- | | dropped if not enough free slots are | | | |
- | | currently available in the queue, so the | | | |
- | | write operation to the queue is non- | | | |
- | | blocking. | | | |
- | | When dropless is set to YES, packets cannot | | | |
- | | be dropped if not enough free slots are | | | |
- | | currently available in the queue, so the | | | |
- | | write operation to the queue is blocking, as | | | |
- | | the write operation is retried until enough | | | |
- | | free slots become available and all the | | | |
- | | packets are successfully written to the | | | |
- | | queue. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | n_retries | Number of retries. Valid only when dropless | YES | uint32_t | 0 |
- | | is set to YES. When set to 0, it indicates | | | |
- | | unlimited number of retries. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | cpu | CPU socket ID where to allocate memory | YES | uint32_t | 0 |
- | | for this SWQ. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
-
-
-TM section
-~~~~~~~~~~
-
-.. _table_ip_pipelines_tm_section:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{1.5cm}|
-
-.. table:: Configuration file TM section
-
- +---------------+---------------------------------------------+----------+----------+---------------+
- | Section | Description | Optional | Type | Default value |
- +===============+=============================================+==========+==========+===============+
- | Cfg | File name to parse for the TM configuration | YES | string | tm_profile |
- | | to be applied. The syntax of this file is | | | |
- | | described in the examples/qos_sched DPDK | | | |
- | | application documentation. | | | |
- +---------------+---------------------------------------------+----------+----------+---------------+
- | burst_read | Read burst size (number of packets) | YES | uint32_t | 64 |
- +---------------+---------------------------------------------+----------+----------+---------------+
- | burst_write | Write burst size (number of packets) | YES | uint32_t | 32 |
- +---------------+---------------------------------------------+----------+----------+---------------+
-
-
-KNI section
-~~~~~~~~~~~
-
-.. _table_ip_pipelines_kni_section:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{1.5cm}|
-
-.. table:: Configuration file KNI section
-
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | Section | Description | Optional | Type | Default value |
- +===============+==============================================+==========+==================+===============+
- | core | CPU core to run the KNI kernel thread. | YES | See "CPU Core | Not set |
- | | When core config is set, the KNI kernel | | notation" | |
- | | thread will be bound to the particular core. | | | |
- | | When core config is not set, the KNI kernel | | | |
- | | thread will be scheduled by the OS. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | mempool | Mempool to use for buffer allocation for | YES | uint32_t | MEMPOOL0 |
- | | current KNI port. The mempool ID has | | | |
- | | to be associated with a valid instance | | | |
- | | defined in the mempool entry of the global | | | |
- | | section. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | burst_read | Read burst size (number of packets) | YES | uint32_t | 32 |
- | | | | power of 2 | |
- | | | | 0 < burst < size | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | burst_write | Write burst size (number of packets) | YES | uint32_t | 32 |
- | | | | power of 2 | |
- | | | | 0 < burst < size | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | dropless | When dropless is set to NO, packets can be | YES | YES/NO | NO |
- | | dropped if not enough free slots are | | | |
- | | currently available in the queue, so the | | | |
- | | write operation to the queue is non- | | | |
- | | blocking. | | | |
- | | When dropless is set to YES, packets cannot | | | |
- | | be dropped if not enough free slots are | | | |
- | | currently available in the queue, so the | | | |
- | | write operation to the queue is blocking, as | | | |
- | | the write operation is retried until enough | | | |
- | | free slots become available and all the | | | |
- | | packets are successfully written to the | | | |
- | | queue. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | n_retries | Number of retries. Valid only when dropless | YES | uint64_t | 0 |
- | | is set to YES. When set to 0, it indicates | | | |
- | | unlimited number of retries. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
-
-
-SOURCE section
+Initialization
~~~~~~~~~~~~~~
-.. _table_ip_pipelines_source_section:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{2cm}|
-
-.. table:: Configuration file SOURCE section
-
- +---------------+---------------------------------------+----------+----------+---------------+
- | Section | Description | Optional | Type | Default value |
- +===============+=======================================+==========+==========+===============+
- | Mempool | Mempool to use for buffer allocation. | YES | uint32_t | MEMPOOL0 |
- +---------------+---------------------------------------+----------+----------+---------------+
- | Burst | Read burst size (number of packets) | | uint32_t | 32 |
- +---------------+---------------------------------------+----------+----------+---------------+
-
-
-SINK section
-~~~~~~~~~~~~
-
-Currently, there are no parameters to be passed to a sink device, so
-SINK section is not allowed.
+During this stage, EAL layer is initialised and application specific arguments are parsed. Furthermore, the data strcutures
+(i.e. linked lists) for application objects are initialized. In case of any initialization error, an error message
+is displayed and the application is terminated.
-MSGQ section
-~~~~~~~~~~~~
+.. _ip_pipeline_runtime:
-.. _table_ip_pipelines_msgq_section:
+Run-time
+~~~~~~~~
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{1.5cm}|
+The master thread is creating and managing all the application objects based on CLI input.
-.. table:: Configuration file MSGQ section
+Each data plane thread runs one or several pipelines previously assigned to it in round-robin order. Each data plane thread
+executes two tasks in time-sharing mode:
- +---------+--------------------------------------------+----------+------------+---------------+
- | Section | Description | Optional | Type | Default value |
- +=========+============================================+==========+============+===============+
- | size | Queue size (number of packets) | YES | uint32_t | 64 |
- | | | | != 0 | |
- | | | | power of 2 | |
- +---------+--------------------------------------------+----------+------------+---------------+
- | cpu | CPU socket ID where to allocate memory for | YES | uint32_t | 0 |
- | | the current queue. | | | |
- +---------+--------------------------------------------+----------+------------+---------------+
+1. *Packet processing task*: Process bursts of input packets read from the pipeline input ports.
+2. *Message handling task*: Periodically, the data plane thread pauses the packet processing task and polls for request
+ messages send by the master thread. Examples: add/remove pipeline to/from current data plane thread, add/delete rules
+ to/from given table of a specific pipeline owned by the current data plane thread, read statistics, etc.
-EAL section
-~~~~~~~~~~~
+Examples
+--------
-The application generates the EAL parameters rather than reading them from the command line.
+.. _table_examples:
-The CPU core mask parameter is generated based on the core entry of all PIPELINE sections.
-All the other EAL parameters can be set from this section of the application configuration file.
+.. tabularcolumns:: |p{3cm}|p{5cm}|p{4cm}|p{4cm}|
+.. table:: Pipeline examples provided with the application
+
+ +-----------------------+----------------------+----------------+------------------------------------+
+ | Name | Table(s) | Actions | Messages |
+ +=======================+======================+================+====================================+
+ | L2fwd | Stub | Forward | 1. Mempool create |
+ | | | | 2. Link create |
+ | Note: Implemented | | | 3. Pipeline create |
+ | using pipeline with | | | 4. Pipeline port in/out |
+ | a simple pass-through | | | 5. Pipeline table |
+ | connection between | | | 6. Pipeline port in table |
+ | input and output | | | 7. Pipeline enable |
+ | ports. | | | 8. Pipeline table rule add |
+ +-----------------------+----------------------+----------------+------------------------------------+
+ | Flow classification | Exact match | Forward | 1. Mempool create |
+ | | | | 2. Link create |
+ | | * Key = byte array | | 3. Pipeline create |
+ | | (16 bytes) | | 4. Pipeline port in/out |
+ | | * Offset = 278 | | 5. Pipeline table |
+ | | * Table size = 64K | | 6. Pipeline port in table |
+ | | | | 7. Pipeline enable |
+ | | | | 8. Pipeline table rule add default |
+ | | | | 9. Pipeline table rule add |
+ +-----------------------+----------------------+----------------+------------------------------------+
+ | KNI | Stub | Forward | 1. Mempool create |
+ | | | | 2. Link create |
+ | | | | 3. Pipeline create |
+ | | | | 4. Pipeline port in/out |
+ | | | | 5. Pipeline table |
+ | | | | 6. Pipeline port in table |
+ | | | | 7. Pipeline enable |
+ | | | | 8. Pipeline table rule add |
+ +-----------------------+----------------------+----------------+------------------------------------+
+ | Firewall | ACL | Allow/Drop | 1. Mempool create |
+ | | | | 2. Link create |
+ | | * Key = n-tuple | | 3. Pipeline create |
+ | | * Offset = 270 | | 4. Pipeline port in/out |
+ | | * Table size = 4K | | 5. Pipeline table |
+ | | | | 6. Pipeline port in table |
+ | | | | 7. Pipeline enable |
+ | | | | 8. Pipeline table rule add default |
+ | | | | 9. Pipeline table rule add |
+ +-----------------------+----------------------+----------------+------------------------------------+
+ | IP routing | LPM (IPv4) | Forward | 1. Mempool Create |
+ | | | | 2. Link create |
+ | | * Key = IP dest addr | | 3. Pipeline creat |
+ | | * Offset = 286 | | 4. Pipeline port in/out |
+ | | * Table size = 4K | | 5. Pipeline table |
+ | | | | 6. Pipeline port in table |
+ | | | | 7. Pipeline enable |
+ | | | | 8. Pipeline table rule add default |
+ | | | | 9. Pipeline table rule add |
+ +-----------------------+----------------------+----------------+------------------------------------+
+ | Equal-cost multi-path | LPM (IPv4) | Forward, | 1. Mempool Create |
+ | routing (ECMP) | | load balance, | 2. Link create |
+ | | * Key = IP dest addr | encap ether | 3. Pipeline create |
+ | | * Offset = 286 | | 4. Pipeline port in/out |
+ | | * Table size = 4K | | 5. Pipeline table (LPM) |
+ | | | | 6. Pipeline table (Array) |
+ | | | | 7. Pipeline port in table (LPM) |
+ | | Array | | 8. Pipeline enable |
+ | | | | 9. Pipeline table rule add default |
+ | | * Key = Array index | | 10. Pipeline table rule add(LPM) |
+ | | * Offset = 256 | | 11. Pipeline table rule add(Array) |
+ | | * Size = 64K | | |
+ | | | | |
+ +-----------------------+----------------------+----------------+------------------------------------+
-Library of pipeline types
--------------------------
+Command Line Interface (CLI)
+----------------------------
-Pipeline module
-~~~~~~~~~~~~~~~
-
-A pipeline is a self-contained module that implements a packet processing function and is typically implemented on
-top of the DPDK Packet Framework *librte_pipeline* library.
-The application provides a run-time mechanism to register different pipeline types.
-
-Depending on the required configuration, each registered pipeline type (pipeline class) is instantiated one or
-several times, with each pipeline instance (pipeline object) assigned to one of the available CPU cores.
-Each CPU core can run one or more pipeline instances, which might be of same or different types.
-For more information of the CPU core threading model, please refer to the :ref:`ip_pipeline_runtime` section.
-
-
-Pipeline type
-^^^^^^^^^^^^^
-
-Each pipeline type is made up of a back-end and a front-end. The back-end represents the packet processing engine
-of the pipeline, typically implemented using the DPDK Packet Framework libraries, which reads packets from the
-input packet queues, handles them and eventually writes them to the output packet queues or drops them.
-The front-end represents the run-time configuration interface of the pipeline, which is exposed as CLI commands.
-The front-end communicates with the back-end through message queues.
-
-.. _table_ip_pipelines_back_end:
-
-.. tabularcolumns:: |p{1cm}|p{2cm}|p{12cm}|
-
-.. table:: Pipeline back-end
-
- +------------+------------------+--------------------------------------------------------------------+
- | Field name | Field type | Description |
- +============+==================+====================================================================+
- | f_init | Function pointer | Function to initialize the back-end of the current pipeline |
- | | | instance. Typical work implemented by this function for the |
- | | | current pipeline instance: |
- | | | Memory allocation; |
- | | | Parse the pipeline type specific arguments; |
- | | | Initialize the pipeline input ports, output ports and tables, |
- | | | interconnect input ports to tables; |
- | | | Set the message handlers. |
- +------------+------------------+--------------------------------------------------------------------+
- | f_free | Function pointer | Function to free the resources allocated by the back-end of the |
- | | | current pipeline instance. |
- +------------+------------------+--------------------------------------------------------------------+
- | f_run | Function pointer | Set to NULL for pipelines implemented using the DPDK library |
- | | | librte_pipeline (typical case), and to non-NULL otherwise. This |
- | | | mechanism is made available to support quick integration of |
- | | | legacy code. |
- | | | This function is expected to provide the packet processing |
- | | | related code to be called as part of the CPU thread dispatch |
- | | | loop, so this function is not allowed to contain an infinite loop. |
- +------------+------------------+--------------------------------------------------------------------+
- | f_timer | Function pointer | Function to read the pipeline input message queues, handle |
- | | | the request messages, create response messages and write |
- | | | the response queues. The format of request and response |
- | | | messages is defined by each pipeline type, with the exception |
- | | | of some requests which are mandatory for all pipelines (e.g. |
- | | | ping, statistics). |
- +------------+------------------+--------------------------------------------------------------------+
+Link
+~~~~
+ Link configuration ::
-.. _table_ip_pipelines_front_end:
-
-.. tabularcolumns:: |p{1cm}|p{2cm}|p{12cm}|
+ link <link_name>
+ dev <device_name>|port <port_id>
+ rxq <n_queues> <queue_size> <mempool_name>
+ txq <n_queues> <queue_size> promiscuous on | off
+ [rss <qid_0> ... <qid_n>]
-.. table:: Pipeline front-end
-
- +------------+-----------------------+-------------------------------------------------------------------+
- | Field name | Field type | Description |
- +============+=======================+===================================================================+
- | f_init | Function pointer | Function to initialize the front-end of the current pipeline |
- | | | instance. |
- +------------+-----------------------+-------------------------------------------------------------------+
- | f_post_init| Function pointer | Function to run once after f_init. |
- +------------+-----------------------+-------------------------------------------------------------------+
- | f_track | Function pointer | See section Tracking pipeline output port to physical link. |
- +------------+-----------------------+-------------------------------------------------------------------+
- | f_free | Function pointer | Function to free the resources allocated by the front-end of |
- | | | the current pipeline instance. |
- +------------+-----------------------+-------------------------------------------------------------------+
- | cmds | Array of CLI commands | Array of CLI commands to be registered to the application CLI |
- | | | for the current pipeline type. Even though the CLI is executed |
- | | | by a different pipeline (typically, this is the master pipeline), |
- | | | from modularity perspective is more efficient to keep the |
- | | | message client side (part of the front-end) together with the |
- | | | message server side (part of the back-end). |
- +------------+-----------------------+-------------------------------------------------------------------+
+Mempool
+~~~~~~~
-Tracking pipeline output port to physical link
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Each pipeline instance is a standalone block that does not have visibility into the other pipeline instances or
-the application-level pipeline inter-connectivity.
-In some cases, it is useful for a pipeline instance to get application level information related to pipeline
-connectivity, such as to identify the output link (e.g. physical NIC port) where one of its output ports connected,
-either directly or indirectly by traversing other pipeline instances.
+ Mempool create ::
-Tracking can be successful or unsuccessful.
-Typically, tracking for a specific pipeline instance is successful when each one of its input ports can be mapped
-to a single output port, meaning that all packets read from the current input port can only go out on a single
-output port.
-Depending on the pipeline type, some exceptions may be allowed: a small portion of the packets, considered exception
-packets, are sent out on an output port that is pre-configured for this purpose.
-
-For pass-through pipeline type, the tracking is always successful.
-For pipeline types as flow classification, firewall or routing, the tracking is only successful when the number of
-output ports for the current pipeline instance is 1.
-
-This feature is used by the IP routing pipeline for adding/removing implicit routes every time a link is brought
-up/down.
+ mempool <mempool_name> buffer <buffer_size>
+ pool <pool_size> cache <cache_size> cpu <cpu_id>
-Table copies
-^^^^^^^^^^^^
-
-Fast table copy: pipeline table used by pipeline for the packet processing task, updated through messages, table
-data structures are optimized for lookup operation.
-
-Slow table copy: used by the configuration layer, typically updated through CLI commands, kept in sync with the fast
-copy (its update triggers the fast copy update).
-Required for executing advanced table queries without impacting the packet processing task, therefore the slow copy
-is typically organized using different criteria than the fast copy.
-
-Examples:
-
-* Flow classification: Search through current set of flows (e.g. list all flows with a specific source IP address);
-
-* Firewall: List rules in descending order of priority;
-
-* Routing table: List routes sorted by prefix depth and their type (local, remote, default);
-
-* ARP: List entries sorted per output interface.
-
-
-Packet meta-data
-^^^^^^^^^^^^^^^^
-
-Packet meta-data field offsets provided as argument to pipeline instances are essentially defining the data structure
-for the packet meta-data used by the current application use-case.
-It is very useful to put it in the configuration file as a comment in order to facilitate the readability of the
-configuration file.
-
-The reason to use field offsets for defining the data structure for the packet meta-data is due to the C language
-limitation of not being able to define data structures at run-time.
-Feature to consider: have the configuration file parser automatically generate and print the data structure defining
-the packet meta-data for the current application use-case.
-
-Packet meta-data typically contains:
+Software queue
+~~~~~~~~~~~~~~
-1. Pure meta-data: intermediate data per packet that is computed internally, passed between different tables of
- the same pipeline instance (e.g. lookup key for the ARP table is obtained from the routing table), or between
- different pipeline instances (e.g. flow ID, traffic metering color, etc);
+ Create software queue ::
-2. Packet fields: typically, packet header fields that are read directly from the packet, or read from the packet
- and saved (duplicated) as a working copy at a different location within the packet meta-data (e.g. Diffserv
- 5-tuple, IP destination address, etc).
+ swq <swq_name> size <size> cpu <cpu_id>
-Several strategies are used to design the packet meta-data, as described in the next subsections.
+Traffic manager
+~~~~~~~~~~~~~~~
-Store packet meta-data in a different cache line as the packet headers
-""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+ Add traffic manager subport profile ::
-This approach is able to support protocols with variable header length, like MPLS, where the offset of IP header
-from the start of the packet (and, implicitly, the offset of the IP header in the packet buffer) is not fixed.
-Since the pipelines typically require the specification of a fixed offset to the packet fields (e.g. Diffserv
-5-tuple, used by the flow classification pipeline, or the IP destination address, used by the IP routing pipeline),
-the workaround is to have the packet RX pipeline copy these fields at fixed offsets within the packet meta-data.
+ tmgr subport profile
+ <tb_rate> <tb_size>
+ <tc0_rate> <tc1_rate> <tc2_rate> <tc3_rate>
+ <tc_period>
-As this approach duplicates some of the packet fields, it requires accessing more cache lines per packet for filling
-in selected packet meta-data fields (on RX), as well as flushing selected packet meta-data fields into the
-packet (on TX).
-Example:
+ Add traffic manager pipe profile ::
-.. code-block:: ini
+ tmgr pipe profile
+ <tb_rate> <tb_size>
+ <tc0_rate> <tc1_rate> <tc2_rate> <tc3_rate>
+ <tc_period>
+ <tc_ov_weight> <wrr_weight0..15>
+ Create traffic manager port ::
- ; struct app_pkt_metadata {
- ; uint32_t ip_da;
- ; uint32_t hash;
- ; uint32_t flow_id;
- ; uint32_t color;
- ; } __attribute__((__packed__));
- ;
+ tmgr <tmgr_name>
+ rate <rate>
+ spp <n_subports_per_port>
+ pps <n_pipes_per_subport>
+ qsize <qsize_tc0>
+ <qsize_tc1> <qsize_tc2> <qsize_tc3>
+ fo <frame_overhead> mtu <mtu> cpu <cpu_id>
- [PIPELINE1]
- ; Packet meta-data offsets
- ip_da_offset = 0; Used by: routing
- hash_offset = 4; Used by: RX, flow classification
- flow_id_offset = 8; Used by: flow classification, flow actions
- color_offset = 12; Used by: flow actions, routing
+ Configure traffic manager subport ::
+ tmgr <tmgr_name>
+ subport <subport_id>
+ profile <subport_profile_id>
-Overlay the packet meta-data in the same cache line with the packet headers
-"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+ Configure traffic manager pipe ::
-This approach is minimizing the number of cache line accessed per packet by storing the packet metadata in the
-same cache line with the packet headers.
-To enable this strategy, either some headroom is reserved for meta-data at the beginning of the packet headers
-cache line (e.g. if 16 bytes are needed for meta-data, then the packet headroom can be set to 128+16 bytes, so
-that NIC writes the first byte of the packet at offset 16 from the start of the first packet cache line),
-or meta-data is reusing the space of some packet headers that are discarded from the packet (e.g. input Ethernet
-header).
+ tmgr <tmgr_name>
+ subport <subport_id>
+ pipe from <pipe_id_first> to <pipe_id_last>
+ profile <pipe_profile_id>
-Example:
-.. code-block:: ini
+Tap
+~~~
- ; struct app_pkt_metadata {
- ; uint8_t headroom[RTE_PKTMBUF_HEADROOM]; /* 128 bytes (default) */
- ; union {
- ; struct {
- ; struct ether_hdr ether; /* 14 bytes */
- ; struct qinq_hdr qinq; /* 8 bytes */
- ; };
- ; struct {
- ; uint32_t hash;
- ; uint32_t flow_id;
- ; uint32_t color;
- ; };
- ; };
- ; struct ipv4_hdr ip; /* 20 bytes */
- ; } __attribute__((__packed__));
- ;
- [PIPELINE2]
- ; Packet meta-data offsets
- qinq_offset = 142; Used by: RX, flow classification
- ip_da_offset = 166; Used by: routing
- hash_offset = 128; Used by: RX, flow classification
- flow_id_offset = 132; Used by: flow classification, flow actions
- color_offset = 136; Used by: flow actions, routing
+ Create tap port ::
+ tap <name>
-List of pipeline types
-~~~~~~~~~~~~~~~~~~~~~~
-.. _table_ip_pipelines_types:
+Kni
+~~~
-.. tabularcolumns:: |p{3cm}|p{5cm}|p{4cm}|p{4cm}|
+ Create kni port ::
-.. table:: List of pipeline types provided with the application
-
- +-----------------------+-----------------------------+-----------------------+------------------------------------------+
- | Name | Table(s) | Actions | Messages |
- +=======================+=============================+=======================+==========================================+
- | Pass-through | Passthrough | 1. Pkt metadata build | 1. Ping |
- | | | 2. Flow hash | 2. Stats |
- | Note: depending on | | 3. Pkt checks | |
- | port type, can be | | 4. Load balancing | |
- | used for RX, TX, IP | | | |
- | fragmentation, IP | | | |
- | reassembly or Traffic | | | |
- | Management | | | |
- +-----------------------+-----------------------------+-----------------------+------------------------------------------+
- | Flow classification | Exact match | 1. Flow ID | 1. Ping |
- | | | | |
- | | * Key = byte array | 2. Flow stats | 2. Stats |
- | | (source: pkt metadata) | 3. Metering | 3. Flow stats |
- | | * Data = action dependent | 4. Network Address | 4. Action stats |
- | | | 5. Translation (NAT) | 5. Flow add/ update/ delete |
- | | | | 6. Default flow add/ update/ delete |
- | | | | 7. Action update |
- +-----------------------+-----------------------------+-----------------------+------------------------------------------+
- | Flow actions | Array | 1. Flow stats | 1. Ping |
- | | | | |
- | | * Key = Flow ID | 2. Metering | 2. Stats |
- | | (source: pkt metadata) | 3. Network Address | 3. Action stats |
- | | * Data = action dependent | 4. Translation (NAT) | 4. Action update |
- +-----------------------+-----------------------------+-----------------------+------------------------------------------+
- | Firewall | ACL | 1. Allow/Drop | 1. Ping |
- | | | | |
- | | * Key = n-tuple | | 2. Stats |
- | | (source: pkt headers) | | 3. Rule add/ update/ delete |
- | | * Data = none | | 4. Default rule add/ update/ delete |
- +-----------------------+-----------------------------+-----------------------+------------------------------------------+
- | IP routing | LPM (IPv4 or IPv6, | 1. TTL decrement and | 1. Ping |
- | | depending on pipeline type) | 2. IPv4 checksum | 2. Stats |
- | | | | |
- | | * Key = IP destination | 3. update | 3. Route add/ update/ delete |
- | | (source: pkt metadata) | 4. Header | 4. Default route add/ update/ delete |
- | | * Data = Dependent on | 5. encapsulation | 5. ARP entry add/ update/ delete |
- | | actions and next hop | 6. (based on next hop | 6. Default ARP entry add/ update/ delete |
- | | type | 7. type) | |
- | | | | |
- | | Hash table (for ARP, only | | |
- | | | | |
- | | when ARP is enabled) | | |
- | | | | |
- | | * Key = (Port ID, | | |
- | | next hop IP address) | | |
- | | (source: pkt meta-data) | | |
- | | * Data: MAC address | | |
- +-----------------------+-----------------------------+-----------------------+------------------------------------------+
+ kni <kni_name>
+ link <link_name>
+ mempool <mempool_name>
+ [thread <thread_id>]
+Action profile
+~~~~~~~~~~~~~~
-Command Line Interface (CLI)
-----------------------------
+ Create action profile for pipeline input port ::
+
+ port in action profile <profile_name>
+ [filter match | mismatch offset <key_offset> mask <key_mask> key <key_value> port <port_id>]
+ [balance offset <key_offset> mask <key_mask> port <port_id0> ... <port_id15>]
+
+ Create action profile for the pipeline table ::
+
+ table action profile <profile_name>
+ ipv4 | ipv6
+ offset <ip_offset>
+ fwd
+ [balance offset <key_offset> mask <key_mask> outoffset <out_offset>]
+ [meter srtcm | trtcm
+ tc <n_tc>
+ stats none | pkts | bytes | both]
+ [tm spp <n_subports_per_port> pps <n_pipes_per_subport>]
+ [encap ether | vlan | qinq | mpls | pppoe]
+ [nat src | dst
+ proto udp | tcp]
+ [ttl drop | fwd
+ stats none | pkts]
+ [stats pkts | bytes | both]
+ [time]
+
+
+Pipeline
+~~~~~~~~
-Global CLI commands
-~~~~~~~~~~~~~~~~~~~
+Create pipeline ::
+
+ pipeline <pipeline_name>
+ period <timer_period_ms>
+ offset_port_id <offset_port_id>
+ cpu <cpu_id>
+
+Create pipeline input port ::
+
+ pipeline <pipeline_name> port in
+ bsz <burst_size>
+ link <link_name> rxq <queue_id>
+ | swq <swq_name>
+ | tmgr <tmgr_name>
+ | tap <tap_name> mempool <mempool_name> mtu <mtu>
+ | kni <kni_name>
+ | source mempool <mempool_name> file <file_name> bpp <n_bytes_per_pkt>
+ [action <port_in_action_profile_name>]
+ [disabled]
+
+Create pipeline output port ::
+
+ pipeline <pipeline_name> port out
+ bsz <burst_size>
+ link <link_name> txq <txq_id>
+ | swq <swq_name>
+ | tmgr <tmgr_name>
+ | tap <tap_name>
+ | kni <kni_name>
+ | sink [file <file_name> pkts <max_n_pkts>]
+
+Create pipeline table ::
+
+ pipeline <pipeline_name> table
+ match
+ acl
+ ipv4 | ipv6
+ offset <ip_header_offset>
+ size <n_rules>
+ | array
+ offset <key_offset>
+ size <n_keys>
+ | hash
+ ext | lru
+ key <key_size>
+ mask <key_mask>
+ offset <key_offset>
+ buckets <n_buckets>
+ size <n_keys>
+ | lpm
+ ipv4 | ipv6
+ offset <ip_header_offset>
+ size <n_rules>
+ | stub
+ [action <table_action_profile_name>]
+
+Connect pipeline input port to table ::
+
+ pipeline <pipeline_name> port in <port_id> table <table_id>
+
+Display statistics for specific pipeline input port, output port
+or table ::
+
+ pipeline <pipeline_name> port in <port_id> stats read [clear]
+ pipeline <pipeline_name> port out <port_id> stats read [clear]
+ pipeline <pipeline_name> table <table_id> stats read [clear]
+
+Enable given input port for specific pipeline instance ::
+
+ pipeline <pipeline_name> port out <port_id> disable
+
+Disable given input port for specific pipeline instance ::
+
+ pipeline <pipeline_name> port out <port_id> disable
+
+Add default rule to table for specific pipeline instance ::
+
+ pipeline <pipeline_name> table <table_id> rule add
+ match
+ default
+ action
+ fwd
+ drop
+ | port <port_id>
+ | meta
+ | table <table_id>
+
+Add rule to table for specific pipeline instance ::
+
+ pipeline <pipeline_name> table <table_id> rule add
+
+ match
+ acl
+ priority <priority>
+ ipv4 | ipv6 <sa> <sa_depth> <da> <da_depth>
+ <sp0> <sp1> <dp0> <dp1> <proto>
+ | array <pos>
+ | hash
+ raw <key>
+ | ipv4_5tuple <sa> <da> <sp> <dp> <proto>
+ | ipv6_5tuple <sa> <da> <sp> <dp> <proto>
+ | ipv4_addr <addr>
+ | ipv6_addr <addr>
+ | qinq <svlan> <cvlan>
+ | lpm
+ ipv4 | ipv6 <addr> <depth>
+
+ action
+ fwd
+ drop
+ | port <port_id>
+ | meta
+ | table <table_id>
+ [balance <out0> ... <out7>]
+ [meter
+ tc0 meter <meter_profile_id> policer g <pa> y <pa> r <pa>
+ [tc1 meter <meter_profile_id> policer g <pa> y <pa> r <pa>
+ tc2 meter <meter_profile_id> policer g <pa> y <pa> r <pa>
+ tc3 meter <meter_profile_id> policer g <pa> y <pa> r <pa>]]
+ [tm subport <subport_id> pipe <pipe_id>]
+ [encap
+ ether <da> <sa>
+ | vlan <da> <sa> <pcp> <dei> <vid>
+ | qinq <da> <sa> <pcp> <dei> <vid> <pcp> <dei> <vid>
+ | mpls unicast | multicast
+ <da> <sa>
+ label0 <label> <tc> <ttl>
+ [label1 <label> <tc> <ttl>
+ [label2 <label> <tc> <ttl>
+ [label3 <label> <tc> <ttl>]]]
+ | pppoe <da> <sa> <session_id>]
+ [nat ipv4 | ipv6 <addr> <port>]
+ [ttl dec | keep]
+ [stats]
+ [time]
+
+ where:
+ <pa> ::= g | y | r | drop
+
+Add bulk rules to table for specific pipeline instance ::
+
+ pipeline <pipeline_name> table <table_id> rule add bulk <file_name> <n_rules>
-.. _table_ip_pipelines_cli_commands:
+ Where:
+ - file_name = path to file
+ - File line format = match <match> action <action>
-.. tabularcolumns:: |p{3cm}|p{6cm}|p{6cm}|
+Delete table rule for specific pipeline instance ::
-.. table:: Global CLI commands
+ pipeline <pipeline_name> table <table_id> rule delete
+ match <match>
- +---------+---------------------------------------+--------------------------------------------+
- | Command | Description | Syntax |
- +=========+=======================================+============================================+
- | run | Run CLI commands script file. | run <file> |
- | | | <file> = path to file with CLI commands to |
- | | | execute |
- +---------+---------------------------------------+--------------------------------------------+
- | quit | Gracefully terminate the application. | quit |
- +---------+---------------------------------------+--------------------------------------------+
+Delete default table rule for specific pipeline instance ::
+ pipeline <pipeline_name> table <table_id> rule delete
+ match
+ default
-CLI commands for link configuration
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Add meter profile to the table for specific pipeline instance ::
-.. _table_ip_pipelines_runtime_config:
+ pipeline <pipeline_name> table <table_id> meter profile <meter_profile_id>
+ add srtcm cir <cir> cbs <cbs> ebs <ebs>
+ | trtcm cir <cir> pir <pir> cbs <cbs> pbs <pbs>
-.. tabularcolumns:: |p{3cm}|p{6cm}|p{6cm}|
+Delete meter profile from the table for specific pipeline instance ::
-.. table:: List of run-time configuration commands for link configuration
+ pipeline <pipeline_name> table <table_id>
+ meter profile <meter_profile_id> delete
- +-------------+--------------------+--------------------------------------------+
- | Command | Description | Syntax |
- +=============+====================+============================================+
- | link config | Link configuration | link <link ID> config <IP address> <depth> |
- +-------------+--------------------+--------------------------------------------+
- | link up | Link up | link <link ID> up |
- +-------------+--------------------+--------------------------------------------+
- | link down | Link down | link <link ID> down |
- +-------------+--------------------+--------------------------------------------+
- | link ls | Link list | link ls |
- +-------------+--------------------+--------------------------------------------+
+Update the dscp table for meter or traffic manager action for specific
+pipeline instance ::
-CLI commands common for all pipeline types
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ pipeline <pipeline_name> table <table_id> dscp <file_name>
-.. _table_ip_pipelines_mandatory:
+ Where:
+ - file_name = path to file
+ - exactly 64 lines
+ - File line format = <tc_id> <tc_queue_id> <color>, with <color> as: g | y | r
+
+
+Pipeline enable/disable
+~~~~~~~~~~~~~~~~~~~~~~~
-.. tabularcolumns:: |p{3cm}|p{6cm}|p{6cm}|
+ Enable given pipeline instance for specific data plane thread ::
-.. table:: CLI commands mandatory for all pipelines
+ thread <thread_id> pipeline <pipeline_name> enable
- +--------------------+------------------------------------------------------+----------------------------------------------+
- | Command | Description | Syntax |
- +====================+======================================================+==============================================+
- | ping | Check whether specific pipeline instance is alive. | p <pipeline ID> ping |
- | | The master pipeline sends a ping request | |
- | | message to given pipeline instance and waits for | |
- | | a response message back. | |
- | | Timeout message is displayed when the response | |
- | | message is not received before the timer | |
- | | expires. | |
- +--------------------+------------------------------------------------------+----------------------------------------------+
- | stats | Display statistics for specific pipeline input port, | p <pipeline ID> stats port in <port in ID> |
- | | output port or table. | p <pipeline ID> stats port out <port out ID> |
- | | | p <pipeline ID> stats table <table ID> |
- +--------------------+------------------------------------------------------+----------------------------------------------+
- | input port enable | Enable given input port for specific pipeline | p <pipeline ID> port in <port ID> enable |
- | | instance. | |
- +--------------------+------------------------------------------------------+----------------------------------------------+
- | input port disable | Disable given input port for specific pipeline | p <pipeline ID> port in <port ID> disable |
- | | instance. | |
- +--------------------+------------------------------------------------------+----------------------------------------------+
-Pipeline type specific CLI commands
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ Disable given pipeline instance for specific data plane thread ::
-The pipeline specific CLI commands are part of the pipeline type front-end.
+ thread <thread_id> pipeline <pipeline_name> disable
--
2.9.3
^ permalink raw reply [flat|nested] 3+ messages in thread
* [dpdk-dev] [PATCH v2] doc/ip_pipeline: update sample app user guide
2018-05-24 11:05 [dpdk-dev] [PATCH] doc/ip_pipeline: update sample app user guide Jasvinder Singh
@ 2018-05-24 11:59 ` Jasvinder Singh
2018-05-28 1:11 ` Thomas Monjalon
0 siblings, 1 reply; 3+ messages in thread
From: Jasvinder Singh @ 2018-05-24 11:59 UTC (permalink / raw)
To: dev; +Cc: cristian.dumitrescu, john.mcnamara, marko.kovacevic
Update sample app user guide with ip pipeline documentation.
Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Signed-off-by: Jasvinder Singh <jasvinder.singh@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
---
v2:
- remove redundant images associated with application
doc/guides/sample_app_ug/img/ip_pipelines_1.svg | 738 ------------
doc/guides/sample_app_ug/img/ip_pipelines_2.svg | 997 ----------------
doc/guides/sample_app_ug/img/ip_pipelines_3.svg | 826 -------------
doc/guides/sample_app_ug/ip_pipeline.rst | 1448 +++++++----------------
4 files changed, 403 insertions(+), 3606 deletions(-)
delete mode 100644 doc/guides/sample_app_ug/img/ip_pipelines_1.svg
delete mode 100644 doc/guides/sample_app_ug/img/ip_pipelines_2.svg
delete mode 100644 doc/guides/sample_app_ug/img/ip_pipelines_3.svg
diff --git a/doc/guides/sample_app_ug/img/ip_pipelines_1.svg b/doc/guides/sample_app_ug/img/ip_pipelines_1.svg
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diff --git a/doc/guides/sample_app_ug/ip_pipeline.rst b/doc/guides/sample_app_ug/ip_pipeline.rst
index 69af6b8..660798d 100644
--- a/doc/guides/sample_app_ug/ip_pipeline.rst
+++ b/doc/guides/sample_app_ug/ip_pipeline.rst
@@ -1,5 +1,5 @@
.. SPDX-License-Identifier: BSD-3-Clause
- Copyright(c) 2015-2016 Intel Corporation.
+ Copyright(c) 2015-2018 Intel Corporation.
Internet Protocol (IP) Pipeline Application
===========================================
@@ -8,1163 +8,521 @@ Application overview
--------------------
The *Internet Protocol (IP) Pipeline* application is intended to be a vehicle for rapid development of packet processing
-applications running on multi-core CPUs.
+applications on multi-core CPUs.
-The application provides a library of reusable functional blocks called pipelines.
-These pipelines can be seen as prefabricated blocks that can be instantiated and inter-connected through packet queues
+Following OpenFlow and P4 design principles, the application can be used to create functional blocks called pipelines out
+of input/output ports, tables and actions in a modular way. Multiple pipelines can be inter-connected through packet queues
to create complete applications (super-pipelines).
-Pipelines are created and inter-connected through the application configuration file.
-By using different configuration files, different applications are effectively created, therefore this application
-can be seen as an application generator.
-The configuration of each pipeline can be updated at run-time through the application Command Line Interface (CLI).
+The pipelines are mapped to application threads, with each pipeline executed by a single thread and each thread able to run
+one or several pipelines. The possibilities of creating pipelines out of ports, tables and actions, connecting multiple
+pipelines together and mapping the pipelines to execution threads are endless, therefore this application can be seen as
+a true application generator.
-Main application components are:
+Pipelines are created and managed through Command Line Interface (CLI):
-**A Library of reusable pipelines**
+ * Any standard TCP client (e.g. telnet, netcat, custom script, etc) is typically able to connect to the application, send
+ commands through the network and wait for the response before pushing the next command.
- * Each pipeline represents a functional block, e.g. flow classification, firewall, routing, master, etc.
-
- * Each pipeline type can be instantiated several times in the same application, which each instance configured
- separately and mapped to a single CPU core.
- Each CPU core can run one or several pipeline instances, which can be of same or different type.
-
- * Pipeline instances are inter-connected through packet queues (for packet processing) and message queues
- (for run-time configuration).
-
- * Pipelines are implemented using DPDK Packet Framework.
-
- * More pipeline types can always be built and added to the existing pipeline types.
-
-**The Configuration file**
-
- * The configuration file defines the application structure.
- By using different configuration files, different applications are created.
-
- * All the application resources are created and configured through the application configuration file:
- pipeline instances, buffer pools, links (i.e. network interfaces), hardware device RX/TX queues,
- software queues, traffic manager devices, EAL startup arguments, etc.
-
- * The configuration file syntax is “define by reference”, meaning that resources are defined as they are referenced.
- First time a resource name is detected, it is registered with default parameters.
- Optionally, the resource parameters can be further refined through a configuration file section dedicated to
- that resource.
-
- * Command Line Interface (CLI)
-
-**Global CLI commands: link configuration, etc.**
-
- * Common pipeline CLI commands: ping (keep-alive), statistics, etc.
-
- * Pipeline type specific CLI commands: used to configure instances of specific pipeline type.
- These commands are registered with the application when the pipeline type is registered.
- For example, the commands for routing pipeline instances include: route add, route delete, route list, etc.
-
- * CLI commands can be grouped into scripts that can be invoked at initialization and at runtime.
-
-
-Design goals
-------------
-
-
-Rapid development
-~~~~~~~~~~~~~~~~~
-
-This application enables rapid development through quick connectivity of standard components called pipelines.
-These components are built using DPDK Packet Framework and encapsulate packet processing features at different levels:
-ports, tables, actions, pipelines and complete applications.
-
-Pipeline instances are instantiated, configured and inter-connected through low complexity configuration files loaded
-during application initialization.
-Each pipeline instance is mapped to a single CPU core, with each CPU core able to run one or multiple pipeline
-instances of same or different types. By loading a different configuration file, a different application is
-effectively started.
-
-
-Flexibility
-~~~~~~~~~~~
-
-Each packet processing application is typically represented as a chain of functional stages which is often called
-the functional pipeline of the application.
-These stages are mapped to CPU cores to create chains of CPU cores (pipeline model), clusters of CPU cores
-(run-to-completion model) or chains of clusters of CPU cores (hybrid model).
-
-This application allows all the above programming models.
-By applying changes to the configuration file, the application provides the flexibility to reshuffle its
-building blocks in different ways until the configuration providing the best performance is identified.
-
-
-Move pipelines around
-^^^^^^^^^^^^^^^^^^^^^
-
-The mapping of pipeline instances to CPU cores can be reshuffled through the configuration file.
-One or several pipeline instances can be mapped to the same CPU core.
-
-.. _figure_ip_pipelines_1:
-
-.. figure:: img/ip_pipelines_1.*
-
- Example of moving pipeline instances across different CPU cores
-
-
-Move tables around
-^^^^^^^^^^^^^^^^^^
-
-There is some degree of flexibility for moving tables from one pipeline instance to another.
-Based on the configuration arguments passed to each pipeline instance in the configuration file, specific tables
-can be enabled or disabled.
-This way, a specific table can be “moved” from pipeline instance A to pipeline instance B by simply disabling its
-associated functionality for pipeline instance A while enabling it for pipeline instance B.
-
-Due to requirement to have simple syntax for the configuration file, moving tables across different pipeline
-instances is not as flexible as the mapping of pipeline instances to CPU cores, or mapping actions to pipeline tables.
-Complete flexibility in moving tables from one pipeline to another could be achieved through a complex pipeline
-description language that would detail the structural elements of the pipeline (ports, tables and actions) and
-their connectivity, resulting in complex syntax for the configuration file, which is not acceptable.
-Good configuration file readability through simple syntax is preferred.
-
-*Example*: the IP routing pipeline can run the routing function only (with ARP function run by a different
-pipeline instance), or it can run both the routing and ARP functions as part of the same pipeline instance.
-
-
-.. _figure_ip_pipelines_2:
-
-.. figure:: img/ip_pipelines_2.*
-
- Example of moving tables across different pipeline instances
-
-
-Move actions around
-^^^^^^^^^^^^^^^^^^^
-
-When it makes sense, packet processing actions can be moved from one pipeline instance to another.
-Based on the configuration arguments passed to each pipeline instance in the configuration file, specific actions
-can be enabled or disabled.
-This way, a specific action can be "moved" from pipeline instance A to pipeline instance B by simply disabling its
-associated functionality for pipeline instance A while enabling it for pipeline instance B.
-
-*Example*: The flow actions of accounting, traffic metering, application identification, NAT, etc can be run as part
-of the flow classification pipeline instance or split across several flow actions pipeline instances, depending on
-the number of flow instances and their compute requirements.
-
-
-.. _figure_ip_pipelines_3:
-
-.. figure:: img/ip_pipelines_3.*
-
- Example of moving actions across different tables and pipeline instances
-
-
-Performance
-~~~~~~~~~~~
-
-Performance of the application is the highest priority requirement.
-Flexibility is not provided at the expense of performance.
-
-The purpose of flexibility is to provide an incremental development methodology that allows monitoring the
-performance evolution:
-
-* Apply incremental changes in the configuration (e.g. mapping on pipeline instances to CPU cores)
- in order to identify the configuration providing the best performance for a given application;
-
-* Add more processing incrementally (e.g. by enabling more actions for specific pipeline instances) until
- the application is feature complete while checking the performance impact at each step.
-
-
-Debug capabilities
-~~~~~~~~~~~~~~~~~~
-
-The application provides a significant set of debug capabilities:
-
-* Command Line Interface (CLI) support for statistics polling: pipeline instance ping (keep-alive checks),
- pipeline instance statistics per input port/output port/table, link statistics, etc;
-
-* Logging: Turn on/off application log messages based on priority level;
+ * All the application objects are created and managed through CLI commands:
+ * 'Primitive' objects used to create pipeline ports: memory pools, links (i.e. network interfaces), SW queues, traffic managers, etc.
+ * Action profiles: used to define the actions to be executed by pipeline input/output ports and tables.
+ * Pipeline components: input/output ports, tables, pipelines, mapping of pipelines to execution threads.
Running the application
-----------------------
The application startup command line is::
- ip_pipeline [-f CONFIG_FILE] [-s SCRIPT_FILE] -p PORT_MASK [-l LOG_LEVEL]
+ ip_pipeline [EAL_ARGS] -- [-s SCRIPT_FILE] [-h HOST] [-p PORT]
The application startup arguments are:
-``-f CONFIG_FILE``
-
- * Optional: Yes
-
- * Default: ``./config/ip_pipeline.cfg``
-
- * Argument: Path to the configuration file to be loaded by the application.
- Please refer to the :ref:`ip_pipeline_configuration_file` for details on how to write the configuration file.
-
``-s SCRIPT_FILE``
* Optional: Yes
* Default: Not present
- * Argument: Path to the CLI script file to be run by the master pipeline at application startup.
- No CLI script file will be run at startup if this argument is not present.
-
-``-p PORT_MASK``
-
- * Optional: No
-
- * Default: N/A
+ * Argument: Path to the CLI script file to be run at application startup.
+ No CLI script file will run at startup if this argument is not present.
- * Argument: Hexadecimal mask of NIC port IDs to be used by the application.
- First port enabled in this mask will be referenced as LINK0 as part of the application configuration file,
- next port as LINK1, etc.
-
-``-l LOG_LEVEL``
+``-h HOST``
* Optional: Yes
- * Default: 1 (High priority)
-
- * Argument: Log level to determine which application messages are to be printed to standard output.
- Available log levels are: 0 (None), 1 (High priority), 2 (Low priority).
- Only application messages whose priority is higher than or equal to the application log level will be printed.
-
-
-Application stages
-------------------
-
+ * Default: ``0.0.0.0``
-Configuration
-~~~~~~~~~~~~~
+ * Argument: IP Address of the host running ip pipeline application to be used by
+ remote TCP based client (telnet, netcat, etc.) for connection.
-During this stage, the application configuration file is parsed and its content is loaded into the application data
-structures.
-In case of any configuration file parse error, an error message is displayed and the application is terminated.
-Please refer to the :ref:`ip_pipeline_configuration_file` for a description of the application configuration file format.
+``-p PORT``
+ * Optional: Yes
-Configuration checking
-~~~~~~~~~~~~~~~~~~~~~~
-
-In the absence of any parse errors, the loaded content of application data structures is checked for overall consistency.
-In case of any configuration check error, an error message is displayed and the application is terminated.
-
-
-Initialization
-~~~~~~~~~~~~~~
-
-During this stage, the application resources are initialized and the handles to access them are saved into the
-application data structures.
-In case of any initialization error, an error message is displayed and the application is terminated.
-
-The typical resources to be initialized are: pipeline instances, buffer pools, links (i.e. network interfaces),
-hardware device RX/TX queues, software queues, traffic management devices, etc.
-
-
-.. _ip_pipeline_runtime:
-
-Run-time
-~~~~~~~~
-
-Each CPU core runs the pipeline instances assigned to it in time sharing mode and in round robin order:
-
-1. *Packet processing task*: The pipeline run-time code is typically a packet *processing* task built on top of
- DPDK Packet Framework rte_pipeline library, which reads bursts of packets from the pipeline input ports,
- performs table lookups and executes the identified actions for all tables in the pipeline, with packet
- eventually written to pipeline output ports or dropped.
-
-2. *Message handling task*: Each CPU core will also periodically execute the *message handling* code of each
- of the pipelines mapped to it.
- The pipeline message handling code is processing the messages that are pending in the pipeline input message
- queues, which are typically sent by the master CPU core for the on-the-fly pipeline configuration: check
- that pipeline is still alive (ping), add/delete entries in the pipeline tables, get statistics, etc.
- The frequency of executing the message handling code is usually much smaller than the frequency of executing
- the packet processing work.
+ * Default: ``8086``
-Please refer to the :ref:`ip_pipeline_pipeline_section` for more details about the application pipeline module encapsulation.
+ * Argument: TCP port number at which the ip pipeline is running.
+ This port number should be used by remote TCP client (such as telnet, netcat, etc.) to connect to host application.
-.. _ip_pipeline_configuration_file:
+Refer to *DPDK Getting Started Guide* for general information on running applications and the Environment Abstraction Layer (EAL) options.
-Configuration file syntax
--------------------------
+The following is an example command to run ip pipeline application configured for layer 2 forwarding:
-Syntax overview
-~~~~~~~~~~~~~~~
+.. code-block:: console
-The syntax of the configuration file is designed to be simple, which favors readability.
-The configuration file is parsed using the DPDK library librte_cfgfile, which supports simple
-`INI file format <http://en.wikipedia.org/wiki/INI_file>`__ for configuration files.
+ $ ./build/ip_pipeline -c 0x3 -- -s examples/route_ecmp.cli
-As result, the configuration file is split into several sections, with each section containing one or more entries.
-The scope of each entry is its section, and each entry specifies a variable that is assigned a specific value.
-Any text after the ``;`` character is considered a comment and is therefore ignored.
+The application should start successfully and display as follows:
-The following are application specific: number of sections, name of each section, number of entries of each section,
-name of the variables used for each section entry, the value format (e.g. signed/unsigned integer, string, etc)
-and range of each section entry variable.
+.. code-block:: console
-Generic example of configuration file section:
+ EAL: Detected 40 lcore(s)
+ EAL: Detected 2 NUMA nodes
+ EAL: Multi-process socket /var/run/.rte_unix
+ EAL: Probing VFIO support...
+ EAL: PCI device 0000:02:00.0 on NUMA socket 0
+ EAL: probe driver: 8086:10fb net_ixgbe
+ ...
-.. code-block:: ini
+To run remote client (e.g. telnet) to communicate with the ip pipeline application:
- [<section_name>]
+.. code-block:: console
- <variable_name_1> = <value_1>
+ $ telnet 127.0.0.1 8086
- ; ...
+When running a telnet client as above, command prompt is displayed:
- <variable_name_N> = <value_N>
+.. code-block:: console
+ Trying 127.0.0.1...
+ Connected to 127.0.0.1.
+ Escape character is '^]'.
-Application resources present in the configuration file
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ Welcome to IP Pipeline!
-.. _table_ip_pipelines_resource_name:
+ pipeline>
-.. tabularcolumns:: |p{4cm}|p{6cm}|p{6cm}|
+Once application and telnet client start running, messages can be sent from client to application.
+At any stage, telnet client can be terminated using the quit command.
-.. table:: Application resource names in the configuration file
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Resource type | Format | Examples |
- +============================+=============================+=================================================+
- | Pipeline | ``PIPELINE<ID>`` | ``PIPELINE0``, ``PIPELINE1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Mempool | ``MEMPOOL<ID>`` | ``MEMPOOL0``, ``MEMPOOL1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Link (network interface) | ``LINK<ID>`` | ``LINK0``, ``LINK1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Link RX queue | ``RXQ<LINK_ID>.<QUEUE_ID>`` | ``RXQ0.0``, ``RXQ1.5`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Link TX queue | ``TXQ<LINK_ID>.<QUEUE_ID>`` | ``TXQ0.0``, ``TXQ1.5`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Software queue | ``SWQ<ID>`` | ``SWQ0``, ``SWQ1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Traffic Manager | ``TM<LINK_ID>`` | ``TM0``, ``TM1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | KNI (kernel NIC interface) | ``KNI<LINK_ID>`` | ``KNI0``, ``KNI1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Source | ``SOURCE<ID>`` | ``SOURCE0``, ``SOURCE1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Sink | ``SINK<ID>`` | ``SINK0``, ``SINK1`` |
- +----------------------------+-----------------------------+-------------------------------------------------+
- | Message queue | ``MSGQ<ID>`` | ``MSGQ0``, ``MSGQ1``, |
- | | ``MSGQ-REQ-PIPELINE<ID>`` | ``MSGQ-REQ-PIPELINE2``, ``MSGQ-RSP-PIPELINE2,`` |
- | | ``MSGQ-RSP-PIPELINE<ID>`` | ``MSGQ-REQ-CORE-s0c1``, ``MSGQ-RSP-CORE-s0c1`` |
- | | ``MSGQ-REQ-CORE-<CORE_ID>`` | |
- | | ``MSGQ-RSP-CORE-<CORE_ID>`` | |
- +----------------------------+-----------------------------+-------------------------------------------------+
-
-``LINK`` instances are created implicitly based on the ``PORT_MASK`` application startup argument.
-``LINK0`` is the first port enabled in the ``PORT_MASK``, port 1 is the next one, etc.
-The LINK ID is different than the DPDK PMD-level NIC port ID, which is the actual position in the bitmask mentioned above.
-For example, if bit 5 is the first bit set in the bitmask, then ``LINK0`` is having the PMD ID of 5.
-This mechanism creates a contiguous LINK ID space and isolates the configuration file against changes in the board
-PCIe slots where NICs are plugged in.
-
-``RXQ``, ``TXQ``, ``TM`` and ``KNI`` instances have the LINK ID as part of their name.
-For example, ``RXQ2.1``, ``TXQ2.1`` and ``TM2`` are all associated with ``LINK2``.
-
-
-Rules to parse the configuration file
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-The main rules used to parse the configuration file are:
-
-1. Application resource name determines the type of resource based on the name prefix.
-
- *Example*: all software queues need to start with ``SWQ`` prefix, so ``SWQ0`` and ``SWQ5`` are valid software
- queue names.
-
-2. An application resource is defined by creating a configuration file section with its name.
- The configuration file section allows fine tuning on any of the resource parameters.
- Some resource parameters are mandatory, in which case it is required to have them specified as part of the
- section, while some others are optional, in which case they get assigned their default value when not present.
-
- *Example*: section ``SWQ0`` defines a software queue named SWQ0, whose parameters are detailed as part of this section.
-
-3. An application resource can also be defined by referencing it.
- Referencing a resource takes place by simply using its name as part of the value assigned to a variable in any
- configuration file section.
- In this case, the resource is registered with all its parameters having their default values.
- Optionally, a section with the resource name can be added to the configuration file to fine tune some or all
- of the resource parameters.
-
- *Example*: in section ``PIPELINE3``, variable ``pktq_in`` includes ``SWQ5`` as part of its list, which results
- in defining a software queue named ``SWQ5``; when there is no ``SWQ5`` section present in the configuration file,
- ``SWQ5`` gets registered with default parameters.
-
-
-.. _ip_pipeline_pipeline_section:
-
-PIPELINE section
-~~~~~~~~~~~~~~~~
-
-.. _table_ip_pipelines_pipeline_section_1:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{1.5cm}|
-
-.. table:: Configuration file PIPELINE section (1/2)
-
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | Section | Description | Optional | Range | Default value |
- +===============+===========================================================+===============+========================+================+
- | type | Pipeline type. Defines the functionality to be | NO | See "List | N/A |
- | | executed. | | of pipeline types" | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | core | CPU core to run the current pipeline. | YES | See "CPU Core | CPU socket 0, |
- | | | | notation" | core 0, |
- | | | | | hyper-thread 0 |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | pktq_in | Packet queues to serve as input ports for the | YES | List of input | Empty list |
- | | current pipeline instance. The acceptable packet | | packet queue IDs | |
- | | queue types are: ``RXQ``, ``SWQ``, ``TM`` and ``SOURCE``. | | | |
- | | First device in this list is used as pipeline input port | | | |
- | | 0, second as pipeline input port 1, etc. | | | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | pktq_out | Packet queues to serve as output ports for the | YES | List of output | Empty list |
- | | current pipeline instance. The acceptable packet | | packet queue IDs. | |
- | | queue types are: ``TXQ``, ``SWQ``, ``TM`` and ``SINK``. | | | |
- | | First device in this list is used as pipeline output | | | |
- | | port 0, second as pipeline output port 1, etc. | | | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
-
-.. _table_ip_pipelines_pipeline_section_2:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{1.5cm}|
-
-.. table:: Configuration file PIPELINE section (2/2)
-
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | Section | Description | Optional | Range | Default value |
- +===============+===========================================================+===============+========================+================+
- | msgq_in | Input message queues. These queues contain | YES | List of message | Empty list |
- | | request messages that need to be handled by the | | queue IDs | |
- | | current pipeline instance. The type and format of | | | |
- | | request messages is defined by the pipeline type. | | | |
- | | For each pipeline instance, there is an input | | | |
- | | message queue defined implicitly, whose name is: | | | |
- | | ``MSGQ-REQ-<PIPELINE_ID>``. This message queue | | | |
- | | should not be mentioned as part of msgq_in list. | | | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | msgq_out | Output message queues. These queues are used by | YES | List of message | Empty list |
- | | the current pipeline instance to write response | | queue IDs | |
- | | messages as result of request messages being | | | |
- | | handled. The type and format of response | | | |
- | | messages is defined by the pipeline type. | | | |
- | | For each pipeline instance, there is an output | | | |
- | | message queue defined implicitly, whose name is: | | | |
- | | ``MSGQ-RSP-<PIPELINE_ID>``. This message queue | | | |
- | | should not be mentioned as part of msgq_out list. | | | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | timer_period | Time period, measured in milliseconds, | YES | milliseconds | 1 ms |
- | | for handling the input message queues. | | | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
- | <any other> | Arguments to be passed to the current pipeline | Depends on | Depends on | Depends on |
- | | instance. Format of the arguments, their type, | pipeline type | pipeline type | pipeline type |
- | | whether each argument is optional or mandatory | | | |
- | | and its default value (when optional) are defined | | | |
- | | by the pipeline type. | | | |
- | | The value of the arguments is applicable to the | | | |
- | | current pipeline instance only. | | | |
- +---------------+-----------------------------------------------------------+---------------+------------------------+----------------+
-
-
-CPU core notation
-^^^^^^^^^^^^^^^^^
-
-The CPU Core notation is::
-
- <CPU core> ::= [s|S<CPU socket ID>][c|C]<CPU core ID>[h|H]
-
-For example::
-
- CPU socket 0, core 0, hyper-thread 0: 0, c0, s0c0
-
- CPU socket 0, core 0, hyper-thread 1: 0h, c0h, s0c0h
-
- CPU socket 3, core 9, hyper-thread 1: s3c9h
-
-
-MEMPOOL section
-~~~~~~~~~~~~~~~
+Application stages
+------------------
-.. _table_ip_pipelines_mempool_section:
-
-.. tabularcolumns:: |p{2.5cm}|p{6cm}|p{1.5cm}|p{1.5cm}|p{3cm}|
-
-.. table:: Configuration file MEMPOOL section
-
- +---------------+-----------------------------------------------+----------+----------+---------------------------+
- | Section | Description | Optional | Type | Default value |
- +===============+===============================================+==========+==========+===========================+
- | buffer_size | Buffer size (in bytes) for the current | YES | uint32_t | 2048 |
- | | buffer pool. | | | + sizeof(struct rte_mbuf) |
- | | | | | + HEADROOM |
- +---------------+-----------------------------------------------+----------+----------+---------------------------+
- | pool_size | Number of buffers in the current buffer pool. | YES | uint32_t | 32K |
- +---------------+-----------------------------------------------+----------+----------+---------------------------+
- | cache_size | Per CPU thread cache size (in number of | YES | uint32_t | 256 |
- | | buffers) for the current buffer pool. | | | |
- +---------------+-----------------------------------------------+----------+----------+---------------------------+
- | cpu | CPU socket ID where to allocate memory for | YES | uint32_t | 0 |
- | | the current buffer pool. | | | |
- +---------------+-----------------------------------------------+----------+----------+---------------------------+
-
-
-LINK section
-~~~~~~~~~~~~
-
-.. _table_ip_pipelines_link_section:
-
-.. tabularcolumns:: |p{3cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{2cm}|
-
-.. table:: Configuration file LINK section
-
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | Section entry | Description | Optional | Type | Default value |
- +=================+==============================================+==========+==========+===================+
- | arp_q | NIC RX queue where ARP packets should | YES | 0 .. 127 | 0 (default queue) |
- | | be filtered. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | tcp_syn_local_q | NIC RX queue where TCP packets with SYN | YES | 0 .. 127 | 0 (default queue) |
- | | flag should be filtered. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | ip_local_q | NIC RX queue where IP packets with local | YES | 0 .. 127 | 0 (default queue) |
- | | destination should be filtered. | | | |
- | | When TCP, UDP and SCTP local queues are | | | |
- | | defined, they take higher priority than this | | | |
- | | queue. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | tcp_local_q | NIC RX queue where TCP packets with local | YES | 0 .. 127 | 0 (default queue) |
- | | destination should be filtered. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | udp_local_q | NIC RX queue where TCP packets with local | YES | 0 .. 127 | 0 (default queue) |
- | | destination should be filtered. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | sctp_local_q | NIC RX queue where TCP packets with local | YES | 0 .. 127 | 0 (default queue) |
- | | destination should be filtered. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
- | promisc | Indicates whether current link should be | YES | YES/NO | YES |
- | | started in promiscuous mode. | | | |
- +-----------------+----------------------------------------------+----------+----------+-------------------+
-
-
-RXQ section
-~~~~~~~~~~~
-
-.. _table_ip_pipelines_rxq_section:
-
-.. tabularcolumns:: |p{3cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{2cm}|
-
-.. table:: Configuration file RXQ section
-
- +---------------+--------------------------------------------+----------+----------+---------------+
- | Section | Description | Optional | Type | Default value |
- +===============+============================================+==========+==========+===============+
- | mempool | Mempool to use for buffer allocation for | YES | uint32_t | MEMPOOL0 |
- | | current NIC RX queue. The mempool ID has | | | |
- | | to be associated with a valid instance | | | |
- | | defined in the mempool entry of the global | | | |
- | | section. | | | |
- +---------------+--------------------------------------------+----------+----------+---------------+
- | Size | NIC RX queue size (number of descriptors) | YES | uint32_t | 128 |
- +---------------+--------------------------------------------+----------+----------+---------------+
- | burst | Read burst size (number of descriptors) | YES | uint32_t | 32 |
- +---------------+--------------------------------------------+----------+----------+---------------+
-
-
-TXQ section
-~~~~~~~~~~~
-
-.. _table_ip_pipelines_txq_section:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{2cm}|p{1.5cm}|
-
-.. table:: Configuration file TXQ section
-
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | Section | Description | Optional | Type | Default value |
- +===============+==============================================+==========+==================+===============+
- | size | NIC TX queue size (number of descriptors) | YES | uint32_t | 512 |
- | | | | power of 2 | |
- | | | | > 0 | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | burst | Write burst size (number of descriptors) | YES | uint32_t | 32 |
- | | | | power of 2 | |
- | | | | 0 < burst < size | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | dropless | When dropless is set to NO, packets can be | YES | YES/NO | NO |
- | | dropped if not enough free slots are | | | |
- | | currently available in the queue, so the | | | |
- | | write operation to the queue is non- | | | |
- | | blocking. | | | |
- | | When dropless is set to YES, packets cannot | | | |
- | | be dropped if not enough free slots are | | | |
- | | currently available in the queue, so the | | | |
- | | write operation to the queue is blocking, as | | | |
- | | the write operation is retried until enough | | | |
- | | free slots become available and all the | | | |
- | | packets are successfully written to the | | | |
- | | queue. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | n_retries | Number of retries. Valid only when dropless | YES | uint32_t | 0 |
- | | is set to YES. When set to 0, it indicates | | | |
- | | unlimited number of retries. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
-
-
-SWQ section
-~~~~~~~~~~~
-
-.. _table_ip_pipelines_swq_section:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{1.5cm}|
-
-.. table:: Configuration file SWQ section
-
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | Section | Description | Optional | Type | Default value |
- +===============+==============================================+==========+==================+===============+
- | size | Queue size (number of packets) | YES | uint32_t | 256 |
- | | | | power of 2 | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | burst_read | Read burst size (number of packets) | YES | uint32_t | 32 |
- | | | | power of 2 | |
- | | | | 0 < burst < size | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | burst_write | Write burst size (number of packets) | YES | uint32_t | 32 |
- | | | | power of 2 | |
- | | | | 0 < burst < size | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | dropless | When dropless is set to NO, packets can be | YES | YES/NO | NO |
- | | dropped if not enough free slots are | | | |
- | | currently available in the queue, so the | | | |
- | | write operation to the queue is non- | | | |
- | | blocking. | | | |
- | | When dropless is set to YES, packets cannot | | | |
- | | be dropped if not enough free slots are | | | |
- | | currently available in the queue, so the | | | |
- | | write operation to the queue is blocking, as | | | |
- | | the write operation is retried until enough | | | |
- | | free slots become available and all the | | | |
- | | packets are successfully written to the | | | |
- | | queue. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | n_retries | Number of retries. Valid only when dropless | YES | uint32_t | 0 |
- | | is set to YES. When set to 0, it indicates | | | |
- | | unlimited number of retries. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | cpu | CPU socket ID where to allocate memory | YES | uint32_t | 0 |
- | | for this SWQ. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
-
-
-TM section
-~~~~~~~~~~
-
-.. _table_ip_pipelines_tm_section:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{1.5cm}|
-
-.. table:: Configuration file TM section
-
- +---------------+---------------------------------------------+----------+----------+---------------+
- | Section | Description | Optional | Type | Default value |
- +===============+=============================================+==========+==========+===============+
- | Cfg | File name to parse for the TM configuration | YES | string | tm_profile |
- | | to be applied. The syntax of this file is | | | |
- | | described in the examples/qos_sched DPDK | | | |
- | | application documentation. | | | |
- +---------------+---------------------------------------------+----------+----------+---------------+
- | burst_read | Read burst size (number of packets) | YES | uint32_t | 64 |
- +---------------+---------------------------------------------+----------+----------+---------------+
- | burst_write | Write burst size (number of packets) | YES | uint32_t | 32 |
- +---------------+---------------------------------------------+----------+----------+---------------+
-
-
-KNI section
-~~~~~~~~~~~
-
-.. _table_ip_pipelines_kni_section:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{1.5cm}|
-
-.. table:: Configuration file KNI section
-
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | Section | Description | Optional | Type | Default value |
- +===============+==============================================+==========+==================+===============+
- | core | CPU core to run the KNI kernel thread. | YES | See "CPU Core | Not set |
- | | When core config is set, the KNI kernel | | notation" | |
- | | thread will be bound to the particular core. | | | |
- | | When core config is not set, the KNI kernel | | | |
- | | thread will be scheduled by the OS. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | mempool | Mempool to use for buffer allocation for | YES | uint32_t | MEMPOOL0 |
- | | current KNI port. The mempool ID has | | | |
- | | to be associated with a valid instance | | | |
- | | defined in the mempool entry of the global | | | |
- | | section. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | burst_read | Read burst size (number of packets) | YES | uint32_t | 32 |
- | | | | power of 2 | |
- | | | | 0 < burst < size | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | burst_write | Write burst size (number of packets) | YES | uint32_t | 32 |
- | | | | power of 2 | |
- | | | | 0 < burst < size | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | dropless | When dropless is set to NO, packets can be | YES | YES/NO | NO |
- | | dropped if not enough free slots are | | | |
- | | currently available in the queue, so the | | | |
- | | write operation to the queue is non- | | | |
- | | blocking. | | | |
- | | When dropless is set to YES, packets cannot | | | |
- | | be dropped if not enough free slots are | | | |
- | | currently available in the queue, so the | | | |
- | | write operation to the queue is blocking, as | | | |
- | | the write operation is retried until enough | | | |
- | | free slots become available and all the | | | |
- | | packets are successfully written to the | | | |
- | | queue. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
- | n_retries | Number of retries. Valid only when dropless | YES | uint64_t | 0 |
- | | is set to YES. When set to 0, it indicates | | | |
- | | unlimited number of retries. | | | |
- +---------------+----------------------------------------------+----------+------------------+---------------+
-
-
-SOURCE section
+Initialization
~~~~~~~~~~~~~~
-.. _table_ip_pipelines_source_section:
-
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{2cm}|
-
-.. table:: Configuration file SOURCE section
-
- +---------------+---------------------------------------+----------+----------+---------------+
- | Section | Description | Optional | Type | Default value |
- +===============+=======================================+==========+==========+===============+
- | Mempool | Mempool to use for buffer allocation. | YES | uint32_t | MEMPOOL0 |
- +---------------+---------------------------------------+----------+----------+---------------+
- | Burst | Read burst size (number of packets) | | uint32_t | 32 |
- +---------------+---------------------------------------+----------+----------+---------------+
-
-
-SINK section
-~~~~~~~~~~~~
-
-Currently, there are no parameters to be passed to a sink device, so
-SINK section is not allowed.
+During this stage, EAL layer is initialised and application specific arguments are parsed. Furthermore, the data strcutures
+(i.e. linked lists) for application objects are initialized. In case of any initialization error, an error message
+is displayed and the application is terminated.
-MSGQ section
-~~~~~~~~~~~~
+.. _ip_pipeline_runtime:
-.. _table_ip_pipelines_msgq_section:
+Run-time
+~~~~~~~~
-.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{1.5cm}|
+The master thread is creating and managing all the application objects based on CLI input.
-.. table:: Configuration file MSGQ section
+Each data plane thread runs one or several pipelines previously assigned to it in round-robin order. Each data plane thread
+executes two tasks in time-sharing mode:
- +---------+--------------------------------------------+----------+------------+---------------+
- | Section | Description | Optional | Type | Default value |
- +=========+============================================+==========+============+===============+
- | size | Queue size (number of packets) | YES | uint32_t | 64 |
- | | | | != 0 | |
- | | | | power of 2 | |
- +---------+--------------------------------------------+----------+------------+---------------+
- | cpu | CPU socket ID where to allocate memory for | YES | uint32_t | 0 |
- | | the current queue. | | | |
- +---------+--------------------------------------------+----------+------------+---------------+
+1. *Packet processing task*: Process bursts of input packets read from the pipeline input ports.
+2. *Message handling task*: Periodically, the data plane thread pauses the packet processing task and polls for request
+ messages send by the master thread. Examples: add/remove pipeline to/from current data plane thread, add/delete rules
+ to/from given table of a specific pipeline owned by the current data plane thread, read statistics, etc.
-EAL section
-~~~~~~~~~~~
+Examples
+--------
-The application generates the EAL parameters rather than reading them from the command line.
+.. _table_examples:
-The CPU core mask parameter is generated based on the core entry of all PIPELINE sections.
-All the other EAL parameters can be set from this section of the application configuration file.
+.. tabularcolumns:: |p{3cm}|p{5cm}|p{4cm}|p{4cm}|
+.. table:: Pipeline examples provided with the application
+
+ +-----------------------+----------------------+----------------+------------------------------------+
+ | Name | Table(s) | Actions | Messages |
+ +=======================+======================+================+====================================+
+ | L2fwd | Stub | Forward | 1. Mempool create |
+ | | | | 2. Link create |
+ | Note: Implemented | | | 3. Pipeline create |
+ | using pipeline with | | | 4. Pipeline port in/out |
+ | a simple pass-through | | | 5. Pipeline table |
+ | connection between | | | 6. Pipeline port in table |
+ | input and output | | | 7. Pipeline enable |
+ | ports. | | | 8. Pipeline table rule add |
+ +-----------------------+----------------------+----------------+------------------------------------+
+ | Flow classification | Exact match | Forward | 1. Mempool create |
+ | | | | 2. Link create |
+ | | * Key = byte array | | 3. Pipeline create |
+ | | (16 bytes) | | 4. Pipeline port in/out |
+ | | * Offset = 278 | | 5. Pipeline table |
+ | | * Table size = 64K | | 6. Pipeline port in table |
+ | | | | 7. Pipeline enable |
+ | | | | 8. Pipeline table rule add default |
+ | | | | 9. Pipeline table rule add |
+ +-----------------------+----------------------+----------------+------------------------------------+
+ | KNI | Stub | Forward | 1. Mempool create |
+ | | | | 2. Link create |
+ | | | | 3. Pipeline create |
+ | | | | 4. Pipeline port in/out |
+ | | | | 5. Pipeline table |
+ | | | | 6. Pipeline port in table |
+ | | | | 7. Pipeline enable |
+ | | | | 8. Pipeline table rule add |
+ +-----------------------+----------------------+----------------+------------------------------------+
+ | Firewall | ACL | Allow/Drop | 1. Mempool create |
+ | | | | 2. Link create |
+ | | * Key = n-tuple | | 3. Pipeline create |
+ | | * Offset = 270 | | 4. Pipeline port in/out |
+ | | * Table size = 4K | | 5. Pipeline table |
+ | | | | 6. Pipeline port in table |
+ | | | | 7. Pipeline enable |
+ | | | | 8. Pipeline table rule add default |
+ | | | | 9. Pipeline table rule add |
+ +-----------------------+----------------------+----------------+------------------------------------+
+ | IP routing | LPM (IPv4) | Forward | 1. Mempool Create |
+ | | | | 2. Link create |
+ | | * Key = IP dest addr | | 3. Pipeline creat |
+ | | * Offset = 286 | | 4. Pipeline port in/out |
+ | | * Table size = 4K | | 5. Pipeline table |
+ | | | | 6. Pipeline port in table |
+ | | | | 7. Pipeline enable |
+ | | | | 8. Pipeline table rule add default |
+ | | | | 9. Pipeline table rule add |
+ +-----------------------+----------------------+----------------+------------------------------------+
+ | Equal-cost multi-path | LPM (IPv4) | Forward, | 1. Mempool Create |
+ | routing (ECMP) | | load balance, | 2. Link create |
+ | | * Key = IP dest addr | encap ether | 3. Pipeline create |
+ | | * Offset = 286 | | 4. Pipeline port in/out |
+ | | * Table size = 4K | | 5. Pipeline table (LPM) |
+ | | | | 6. Pipeline table (Array) |
+ | | | | 7. Pipeline port in table (LPM) |
+ | | Array | | 8. Pipeline enable |
+ | | | | 9. Pipeline table rule add default |
+ | | * Key = Array index | | 10. Pipeline table rule add(LPM) |
+ | | * Offset = 256 | | 11. Pipeline table rule add(Array) |
+ | | * Size = 64K | | |
+ | | | | |
+ +-----------------------+----------------------+----------------+------------------------------------+
-Library of pipeline types
--------------------------
+Command Line Interface (CLI)
+----------------------------
-Pipeline module
-~~~~~~~~~~~~~~~
-
-A pipeline is a self-contained module that implements a packet processing function and is typically implemented on
-top of the DPDK Packet Framework *librte_pipeline* library.
-The application provides a run-time mechanism to register different pipeline types.
-
-Depending on the required configuration, each registered pipeline type (pipeline class) is instantiated one or
-several times, with each pipeline instance (pipeline object) assigned to one of the available CPU cores.
-Each CPU core can run one or more pipeline instances, which might be of same or different types.
-For more information of the CPU core threading model, please refer to the :ref:`ip_pipeline_runtime` section.
-
-
-Pipeline type
-^^^^^^^^^^^^^
-
-Each pipeline type is made up of a back-end and a front-end. The back-end represents the packet processing engine
-of the pipeline, typically implemented using the DPDK Packet Framework libraries, which reads packets from the
-input packet queues, handles them and eventually writes them to the output packet queues or drops them.
-The front-end represents the run-time configuration interface of the pipeline, which is exposed as CLI commands.
-The front-end communicates with the back-end through message queues.
-
-.. _table_ip_pipelines_back_end:
-
-.. tabularcolumns:: |p{1cm}|p{2cm}|p{12cm}|
-
-.. table:: Pipeline back-end
-
- +------------+------------------+--------------------------------------------------------------------+
- | Field name | Field type | Description |
- +============+==================+====================================================================+
- | f_init | Function pointer | Function to initialize the back-end of the current pipeline |
- | | | instance. Typical work implemented by this function for the |
- | | | current pipeline instance: |
- | | | Memory allocation; |
- | | | Parse the pipeline type specific arguments; |
- | | | Initialize the pipeline input ports, output ports and tables, |
- | | | interconnect input ports to tables; |
- | | | Set the message handlers. |
- +------------+------------------+--------------------------------------------------------------------+
- | f_free | Function pointer | Function to free the resources allocated by the back-end of the |
- | | | current pipeline instance. |
- +------------+------------------+--------------------------------------------------------------------+
- | f_run | Function pointer | Set to NULL for pipelines implemented using the DPDK library |
- | | | librte_pipeline (typical case), and to non-NULL otherwise. This |
- | | | mechanism is made available to support quick integration of |
- | | | legacy code. |
- | | | This function is expected to provide the packet processing |
- | | | related code to be called as part of the CPU thread dispatch |
- | | | loop, so this function is not allowed to contain an infinite loop. |
- +------------+------------------+--------------------------------------------------------------------+
- | f_timer | Function pointer | Function to read the pipeline input message queues, handle |
- | | | the request messages, create response messages and write |
- | | | the response queues. The format of request and response |
- | | | messages is defined by each pipeline type, with the exception |
- | | | of some requests which are mandatory for all pipelines (e.g. |
- | | | ping, statistics). |
- +------------+------------------+--------------------------------------------------------------------+
+Link
+~~~~
+ Link configuration ::
-.. _table_ip_pipelines_front_end:
-
-.. tabularcolumns:: |p{1cm}|p{2cm}|p{12cm}|
+ link <link_name>
+ dev <device_name>|port <port_id>
+ rxq <n_queues> <queue_size> <mempool_name>
+ txq <n_queues> <queue_size> promiscuous on | off
+ [rss <qid_0> ... <qid_n>]
-.. table:: Pipeline front-end
-
- +------------+-----------------------+-------------------------------------------------------------------+
- | Field name | Field type | Description |
- +============+=======================+===================================================================+
- | f_init | Function pointer | Function to initialize the front-end of the current pipeline |
- | | | instance. |
- +------------+-----------------------+-------------------------------------------------------------------+
- | f_post_init| Function pointer | Function to run once after f_init. |
- +------------+-----------------------+-------------------------------------------------------------------+
- | f_track | Function pointer | See section Tracking pipeline output port to physical link. |
- +------------+-----------------------+-------------------------------------------------------------------+
- | f_free | Function pointer | Function to free the resources allocated by the front-end of |
- | | | the current pipeline instance. |
- +------------+-----------------------+-------------------------------------------------------------------+
- | cmds | Array of CLI commands | Array of CLI commands to be registered to the application CLI |
- | | | for the current pipeline type. Even though the CLI is executed |
- | | | by a different pipeline (typically, this is the master pipeline), |
- | | | from modularity perspective is more efficient to keep the |
- | | | message client side (part of the front-end) together with the |
- | | | message server side (part of the back-end). |
- +------------+-----------------------+-------------------------------------------------------------------+
+Mempool
+~~~~~~~
-Tracking pipeline output port to physical link
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Each pipeline instance is a standalone block that does not have visibility into the other pipeline instances or
-the application-level pipeline inter-connectivity.
-In some cases, it is useful for a pipeline instance to get application level information related to pipeline
-connectivity, such as to identify the output link (e.g. physical NIC port) where one of its output ports connected,
-either directly or indirectly by traversing other pipeline instances.
+ Mempool create ::
-Tracking can be successful or unsuccessful.
-Typically, tracking for a specific pipeline instance is successful when each one of its input ports can be mapped
-to a single output port, meaning that all packets read from the current input port can only go out on a single
-output port.
-Depending on the pipeline type, some exceptions may be allowed: a small portion of the packets, considered exception
-packets, are sent out on an output port that is pre-configured for this purpose.
-
-For pass-through pipeline type, the tracking is always successful.
-For pipeline types as flow classification, firewall or routing, the tracking is only successful when the number of
-output ports for the current pipeline instance is 1.
-
-This feature is used by the IP routing pipeline for adding/removing implicit routes every time a link is brought
-up/down.
+ mempool <mempool_name> buffer <buffer_size>
+ pool <pool_size> cache <cache_size> cpu <cpu_id>
-Table copies
-^^^^^^^^^^^^
-
-Fast table copy: pipeline table used by pipeline for the packet processing task, updated through messages, table
-data structures are optimized for lookup operation.
-
-Slow table copy: used by the configuration layer, typically updated through CLI commands, kept in sync with the fast
-copy (its update triggers the fast copy update).
-Required for executing advanced table queries without impacting the packet processing task, therefore the slow copy
-is typically organized using different criteria than the fast copy.
-
-Examples:
-
-* Flow classification: Search through current set of flows (e.g. list all flows with a specific source IP address);
-
-* Firewall: List rules in descending order of priority;
-
-* Routing table: List routes sorted by prefix depth and their type (local, remote, default);
-
-* ARP: List entries sorted per output interface.
-
-
-Packet meta-data
-^^^^^^^^^^^^^^^^
-
-Packet meta-data field offsets provided as argument to pipeline instances are essentially defining the data structure
-for the packet meta-data used by the current application use-case.
-It is very useful to put it in the configuration file as a comment in order to facilitate the readability of the
-configuration file.
-
-The reason to use field offsets for defining the data structure for the packet meta-data is due to the C language
-limitation of not being able to define data structures at run-time.
-Feature to consider: have the configuration file parser automatically generate and print the data structure defining
-the packet meta-data for the current application use-case.
-
-Packet meta-data typically contains:
+Software queue
+~~~~~~~~~~~~~~
-1. Pure meta-data: intermediate data per packet that is computed internally, passed between different tables of
- the same pipeline instance (e.g. lookup key for the ARP table is obtained from the routing table), or between
- different pipeline instances (e.g. flow ID, traffic metering color, etc);
+ Create software queue ::
-2. Packet fields: typically, packet header fields that are read directly from the packet, or read from the packet
- and saved (duplicated) as a working copy at a different location within the packet meta-data (e.g. Diffserv
- 5-tuple, IP destination address, etc).
+ swq <swq_name> size <size> cpu <cpu_id>
-Several strategies are used to design the packet meta-data, as described in the next subsections.
+Traffic manager
+~~~~~~~~~~~~~~~
-Store packet meta-data in a different cache line as the packet headers
-""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+ Add traffic manager subport profile ::
-This approach is able to support protocols with variable header length, like MPLS, where the offset of IP header
-from the start of the packet (and, implicitly, the offset of the IP header in the packet buffer) is not fixed.
-Since the pipelines typically require the specification of a fixed offset to the packet fields (e.g. Diffserv
-5-tuple, used by the flow classification pipeline, or the IP destination address, used by the IP routing pipeline),
-the workaround is to have the packet RX pipeline copy these fields at fixed offsets within the packet meta-data.
+ tmgr subport profile
+ <tb_rate> <tb_size>
+ <tc0_rate> <tc1_rate> <tc2_rate> <tc3_rate>
+ <tc_period>
-As this approach duplicates some of the packet fields, it requires accessing more cache lines per packet for filling
-in selected packet meta-data fields (on RX), as well as flushing selected packet meta-data fields into the
-packet (on TX).
-Example:
+ Add traffic manager pipe profile ::
-.. code-block:: ini
+ tmgr pipe profile
+ <tb_rate> <tb_size>
+ <tc0_rate> <tc1_rate> <tc2_rate> <tc3_rate>
+ <tc_period>
+ <tc_ov_weight> <wrr_weight0..15>
+ Create traffic manager port ::
- ; struct app_pkt_metadata {
- ; uint32_t ip_da;
- ; uint32_t hash;
- ; uint32_t flow_id;
- ; uint32_t color;
- ; } __attribute__((__packed__));
- ;
+ tmgr <tmgr_name>
+ rate <rate>
+ spp <n_subports_per_port>
+ pps <n_pipes_per_subport>
+ qsize <qsize_tc0>
+ <qsize_tc1> <qsize_tc2> <qsize_tc3>
+ fo <frame_overhead> mtu <mtu> cpu <cpu_id>
- [PIPELINE1]
- ; Packet meta-data offsets
- ip_da_offset = 0; Used by: routing
- hash_offset = 4; Used by: RX, flow classification
- flow_id_offset = 8; Used by: flow classification, flow actions
- color_offset = 12; Used by: flow actions, routing
+ Configure traffic manager subport ::
+ tmgr <tmgr_name>
+ subport <subport_id>
+ profile <subport_profile_id>
-Overlay the packet meta-data in the same cache line with the packet headers
-"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+ Configure traffic manager pipe ::
-This approach is minimizing the number of cache line accessed per packet by storing the packet metadata in the
-same cache line with the packet headers.
-To enable this strategy, either some headroom is reserved for meta-data at the beginning of the packet headers
-cache line (e.g. if 16 bytes are needed for meta-data, then the packet headroom can be set to 128+16 bytes, so
-that NIC writes the first byte of the packet at offset 16 from the start of the first packet cache line),
-or meta-data is reusing the space of some packet headers that are discarded from the packet (e.g. input Ethernet
-header).
+ tmgr <tmgr_name>
+ subport <subport_id>
+ pipe from <pipe_id_first> to <pipe_id_last>
+ profile <pipe_profile_id>
-Example:
-.. code-block:: ini
+Tap
+~~~
- ; struct app_pkt_metadata {
- ; uint8_t headroom[RTE_PKTMBUF_HEADROOM]; /* 128 bytes (default) */
- ; union {
- ; struct {
- ; struct ether_hdr ether; /* 14 bytes */
- ; struct qinq_hdr qinq; /* 8 bytes */
- ; };
- ; struct {
- ; uint32_t hash;
- ; uint32_t flow_id;
- ; uint32_t color;
- ; };
- ; };
- ; struct ipv4_hdr ip; /* 20 bytes */
- ; } __attribute__((__packed__));
- ;
- [PIPELINE2]
- ; Packet meta-data offsets
- qinq_offset = 142; Used by: RX, flow classification
- ip_da_offset = 166; Used by: routing
- hash_offset = 128; Used by: RX, flow classification
- flow_id_offset = 132; Used by: flow classification, flow actions
- color_offset = 136; Used by: flow actions, routing
+ Create tap port ::
+ tap <name>
-List of pipeline types
-~~~~~~~~~~~~~~~~~~~~~~
-.. _table_ip_pipelines_types:
+Kni
+~~~
-.. tabularcolumns:: |p{3cm}|p{5cm}|p{4cm}|p{4cm}|
+ Create kni port ::
-.. table:: List of pipeline types provided with the application
-
- +-----------------------+-----------------------------+-----------------------+------------------------------------------+
- | Name | Table(s) | Actions | Messages |
- +=======================+=============================+=======================+==========================================+
- | Pass-through | Passthrough | 1. Pkt metadata build | 1. Ping |
- | | | 2. Flow hash | 2. Stats |
- | Note: depending on | | 3. Pkt checks | |
- | port type, can be | | 4. Load balancing | |
- | used for RX, TX, IP | | | |
- | fragmentation, IP | | | |
- | reassembly or Traffic | | | |
- | Management | | | |
- +-----------------------+-----------------------------+-----------------------+------------------------------------------+
- | Flow classification | Exact match | 1. Flow ID | 1. Ping |
- | | | | |
- | | * Key = byte array | 2. Flow stats | 2. Stats |
- | | (source: pkt metadata) | 3. Metering | 3. Flow stats |
- | | * Data = action dependent | 4. Network Address | 4. Action stats |
- | | | 5. Translation (NAT) | 5. Flow add/ update/ delete |
- | | | | 6. Default flow add/ update/ delete |
- | | | | 7. Action update |
- +-----------------------+-----------------------------+-----------------------+------------------------------------------+
- | Flow actions | Array | 1. Flow stats | 1. Ping |
- | | | | |
- | | * Key = Flow ID | 2. Metering | 2. Stats |
- | | (source: pkt metadata) | 3. Network Address | 3. Action stats |
- | | * Data = action dependent | 4. Translation (NAT) | 4. Action update |
- +-----------------------+-----------------------------+-----------------------+------------------------------------------+
- | Firewall | ACL | 1. Allow/Drop | 1. Ping |
- | | | | |
- | | * Key = n-tuple | | 2. Stats |
- | | (source: pkt headers) | | 3. Rule add/ update/ delete |
- | | * Data = none | | 4. Default rule add/ update/ delete |
- +-----------------------+-----------------------------+-----------------------+------------------------------------------+
- | IP routing | LPM (IPv4 or IPv6, | 1. TTL decrement and | 1. Ping |
- | | depending on pipeline type) | 2. IPv4 checksum | 2. Stats |
- | | | | |
- | | * Key = IP destination | 3. update | 3. Route add/ update/ delete |
- | | (source: pkt metadata) | 4. Header | 4. Default route add/ update/ delete |
- | | * Data = Dependent on | 5. encapsulation | 5. ARP entry add/ update/ delete |
- | | actions and next hop | 6. (based on next hop | 6. Default ARP entry add/ update/ delete |
- | | type | 7. type) | |
- | | | | |
- | | Hash table (for ARP, only | | |
- | | | | |
- | | when ARP is enabled) | | |
- | | | | |
- | | * Key = (Port ID, | | |
- | | next hop IP address) | | |
- | | (source: pkt meta-data) | | |
- | | * Data: MAC address | | |
- +-----------------------+-----------------------------+-----------------------+------------------------------------------+
+ kni <kni_name>
+ link <link_name>
+ mempool <mempool_name>
+ [thread <thread_id>]
+Action profile
+~~~~~~~~~~~~~~
-Command Line Interface (CLI)
-----------------------------
+ Create action profile for pipeline input port ::
+
+ port in action profile <profile_name>
+ [filter match | mismatch offset <key_offset> mask <key_mask> key <key_value> port <port_id>]
+ [balance offset <key_offset> mask <key_mask> port <port_id0> ... <port_id15>]
+
+ Create action profile for the pipeline table ::
+
+ table action profile <profile_name>
+ ipv4 | ipv6
+ offset <ip_offset>
+ fwd
+ [balance offset <key_offset> mask <key_mask> outoffset <out_offset>]
+ [meter srtcm | trtcm
+ tc <n_tc>
+ stats none | pkts | bytes | both]
+ [tm spp <n_subports_per_port> pps <n_pipes_per_subport>]
+ [encap ether | vlan | qinq | mpls | pppoe]
+ [nat src | dst
+ proto udp | tcp]
+ [ttl drop | fwd
+ stats none | pkts]
+ [stats pkts | bytes | both]
+ [time]
+
+
+Pipeline
+~~~~~~~~
-Global CLI commands
-~~~~~~~~~~~~~~~~~~~
+Create pipeline ::
+
+ pipeline <pipeline_name>
+ period <timer_period_ms>
+ offset_port_id <offset_port_id>
+ cpu <cpu_id>
+
+Create pipeline input port ::
+
+ pipeline <pipeline_name> port in
+ bsz <burst_size>
+ link <link_name> rxq <queue_id>
+ | swq <swq_name>
+ | tmgr <tmgr_name>
+ | tap <tap_name> mempool <mempool_name> mtu <mtu>
+ | kni <kni_name>
+ | source mempool <mempool_name> file <file_name> bpp <n_bytes_per_pkt>
+ [action <port_in_action_profile_name>]
+ [disabled]
+
+Create pipeline output port ::
+
+ pipeline <pipeline_name> port out
+ bsz <burst_size>
+ link <link_name> txq <txq_id>
+ | swq <swq_name>
+ | tmgr <tmgr_name>
+ | tap <tap_name>
+ | kni <kni_name>
+ | sink [file <file_name> pkts <max_n_pkts>]
+
+Create pipeline table ::
+
+ pipeline <pipeline_name> table
+ match
+ acl
+ ipv4 | ipv6
+ offset <ip_header_offset>
+ size <n_rules>
+ | array
+ offset <key_offset>
+ size <n_keys>
+ | hash
+ ext | lru
+ key <key_size>
+ mask <key_mask>
+ offset <key_offset>
+ buckets <n_buckets>
+ size <n_keys>
+ | lpm
+ ipv4 | ipv6
+ offset <ip_header_offset>
+ size <n_rules>
+ | stub
+ [action <table_action_profile_name>]
+
+Connect pipeline input port to table ::
+
+ pipeline <pipeline_name> port in <port_id> table <table_id>
+
+Display statistics for specific pipeline input port, output port
+or table ::
+
+ pipeline <pipeline_name> port in <port_id> stats read [clear]
+ pipeline <pipeline_name> port out <port_id> stats read [clear]
+ pipeline <pipeline_name> table <table_id> stats read [clear]
+
+Enable given input port for specific pipeline instance ::
+
+ pipeline <pipeline_name> port out <port_id> disable
+
+Disable given input port for specific pipeline instance ::
+
+ pipeline <pipeline_name> port out <port_id> disable
+
+Add default rule to table for specific pipeline instance ::
+
+ pipeline <pipeline_name> table <table_id> rule add
+ match
+ default
+ action
+ fwd
+ drop
+ | port <port_id>
+ | meta
+ | table <table_id>
+
+Add rule to table for specific pipeline instance ::
+
+ pipeline <pipeline_name> table <table_id> rule add
+
+ match
+ acl
+ priority <priority>
+ ipv4 | ipv6 <sa> <sa_depth> <da> <da_depth>
+ <sp0> <sp1> <dp0> <dp1> <proto>
+ | array <pos>
+ | hash
+ raw <key>
+ | ipv4_5tuple <sa> <da> <sp> <dp> <proto>
+ | ipv6_5tuple <sa> <da> <sp> <dp> <proto>
+ | ipv4_addr <addr>
+ | ipv6_addr <addr>
+ | qinq <svlan> <cvlan>
+ | lpm
+ ipv4 | ipv6 <addr> <depth>
+
+ action
+ fwd
+ drop
+ | port <port_id>
+ | meta
+ | table <table_id>
+ [balance <out0> ... <out7>]
+ [meter
+ tc0 meter <meter_profile_id> policer g <pa> y <pa> r <pa>
+ [tc1 meter <meter_profile_id> policer g <pa> y <pa> r <pa>
+ tc2 meter <meter_profile_id> policer g <pa> y <pa> r <pa>
+ tc3 meter <meter_profile_id> policer g <pa> y <pa> r <pa>]]
+ [tm subport <subport_id> pipe <pipe_id>]
+ [encap
+ ether <da> <sa>
+ | vlan <da> <sa> <pcp> <dei> <vid>
+ | qinq <da> <sa> <pcp> <dei> <vid> <pcp> <dei> <vid>
+ | mpls unicast | multicast
+ <da> <sa>
+ label0 <label> <tc> <ttl>
+ [label1 <label> <tc> <ttl>
+ [label2 <label> <tc> <ttl>
+ [label3 <label> <tc> <ttl>]]]
+ | pppoe <da> <sa> <session_id>]
+ [nat ipv4 | ipv6 <addr> <port>]
+ [ttl dec | keep]
+ [stats]
+ [time]
+
+ where:
+ <pa> ::= g | y | r | drop
+
+Add bulk rules to table for specific pipeline instance ::
+
+ pipeline <pipeline_name> table <table_id> rule add bulk <file_name> <n_rules>
-.. _table_ip_pipelines_cli_commands:
+ Where:
+ - file_name = path to file
+ - File line format = match <match> action <action>
-.. tabularcolumns:: |p{3cm}|p{6cm}|p{6cm}|
+Delete table rule for specific pipeline instance ::
-.. table:: Global CLI commands
+ pipeline <pipeline_name> table <table_id> rule delete
+ match <match>
- +---------+---------------------------------------+--------------------------------------------+
- | Command | Description | Syntax |
- +=========+=======================================+============================================+
- | run | Run CLI commands script file. | run <file> |
- | | | <file> = path to file with CLI commands to |
- | | | execute |
- +---------+---------------------------------------+--------------------------------------------+
- | quit | Gracefully terminate the application. | quit |
- +---------+---------------------------------------+--------------------------------------------+
+Delete default table rule for specific pipeline instance ::
+ pipeline <pipeline_name> table <table_id> rule delete
+ match
+ default
-CLI commands for link configuration
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Add meter profile to the table for specific pipeline instance ::
-.. _table_ip_pipelines_runtime_config:
+ pipeline <pipeline_name> table <table_id> meter profile <meter_profile_id>
+ add srtcm cir <cir> cbs <cbs> ebs <ebs>
+ | trtcm cir <cir> pir <pir> cbs <cbs> pbs <pbs>
-.. tabularcolumns:: |p{3cm}|p{6cm}|p{6cm}|
+Delete meter profile from the table for specific pipeline instance ::
-.. table:: List of run-time configuration commands for link configuration
+ pipeline <pipeline_name> table <table_id>
+ meter profile <meter_profile_id> delete
- +-------------+--------------------+--------------------------------------------+
- | Command | Description | Syntax |
- +=============+====================+============================================+
- | link config | Link configuration | link <link ID> config <IP address> <depth> |
- +-------------+--------------------+--------------------------------------------+
- | link up | Link up | link <link ID> up |
- +-------------+--------------------+--------------------------------------------+
- | link down | Link down | link <link ID> down |
- +-------------+--------------------+--------------------------------------------+
- | link ls | Link list | link ls |
- +-------------+--------------------+--------------------------------------------+
+Update the dscp table for meter or traffic manager action for specific
+pipeline instance ::
-CLI commands common for all pipeline types
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ pipeline <pipeline_name> table <table_id> dscp <file_name>
-.. _table_ip_pipelines_mandatory:
+ Where:
+ - file_name = path to file
+ - exactly 64 lines
+ - File line format = <tc_id> <tc_queue_id> <color>, with <color> as: g | y | r
+
+
+Pipeline enable/disable
+~~~~~~~~~~~~~~~~~~~~~~~
-.. tabularcolumns:: |p{3cm}|p{6cm}|p{6cm}|
+ Enable given pipeline instance for specific data plane thread ::
-.. table:: CLI commands mandatory for all pipelines
+ thread <thread_id> pipeline <pipeline_name> enable
- +--------------------+------------------------------------------------------+----------------------------------------------+
- | Command | Description | Syntax |
- +====================+======================================================+==============================================+
- | ping | Check whether specific pipeline instance is alive. | p <pipeline ID> ping |
- | | The master pipeline sends a ping request | |
- | | message to given pipeline instance and waits for | |
- | | a response message back. | |
- | | Timeout message is displayed when the response | |
- | | message is not received before the timer | |
- | | expires. | |
- +--------------------+------------------------------------------------------+----------------------------------------------+
- | stats | Display statistics for specific pipeline input port, | p <pipeline ID> stats port in <port in ID> |
- | | output port or table. | p <pipeline ID> stats port out <port out ID> |
- | | | p <pipeline ID> stats table <table ID> |
- +--------------------+------------------------------------------------------+----------------------------------------------+
- | input port enable | Enable given input port for specific pipeline | p <pipeline ID> port in <port ID> enable |
- | | instance. | |
- +--------------------+------------------------------------------------------+----------------------------------------------+
- | input port disable | Disable given input port for specific pipeline | p <pipeline ID> port in <port ID> disable |
- | | instance. | |
- +--------------------+------------------------------------------------------+----------------------------------------------+
-Pipeline type specific CLI commands
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ Disable given pipeline instance for specific data plane thread ::
-The pipeline specific CLI commands are part of the pipeline type front-end.
+ thread <thread_id> pipeline <pipeline_name> disable
--
2.9.3
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [dpdk-dev] [PATCH v2] doc/ip_pipeline: update sample app user guide
2018-05-24 11:59 ` [dpdk-dev] [PATCH v2] " Jasvinder Singh
@ 2018-05-28 1:11 ` Thomas Monjalon
0 siblings, 0 replies; 3+ messages in thread
From: Thomas Monjalon @ 2018-05-28 1:11 UTC (permalink / raw)
To: Jasvinder Singh, cristian.dumitrescu; +Cc: dev, john.mcnamara, marko.kovacevic
24/05/2018 13:59, Jasvinder Singh:
> Update sample app user guide with ip pipeline documentation.
>
> Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
> Signed-off-by: Jasvinder Singh <jasvinder.singh@intel.com>
>
> Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Applied, thanks
^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-05-28 1:11 ` Thomas Monjalon
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