diff options
Diffstat (limited to 'doc/guides/sample_app_ug')
23 files changed, 693 insertions, 4512 deletions
diff --git a/doc/guides/sample_app_ug/bbdev_app.rst b/doc/guides/sample_app_ug/bbdev_app.rst index f17125da..653f972f 100644 --- a/doc/guides/sample_app_ug/bbdev_app.rst +++ b/doc/guides/sample_app_ug/bbdev_app.rst @@ -31,8 +31,8 @@ Limitations Compiling the Application ------------------------- -#. DPDK needs to be built with ``turbo_sw`` PMD driver enabled along with - ``FLEXRAN SDK`` Libraries. Refer to *SW Turbo Poll Mode Driver* +#. DPDK needs to be built with ``baseband_turbo_sw`` PMD driver enabled along + with ``FLEXRAN SDK`` Libraries. Refer to *SW Turbo Poll Mode Driver* documentation for more details on this. #. Go to the example directory: @@ -84,13 +84,14 @@ issue the command: .. code-block:: console - $ ./build/bbdev --vdev='turbo_sw' -w <NIC0PCIADDR> -c 0x38 --socket-mem=2,2 \ + $ ./build/bbdev --vdev='baseband_turbo_sw' -w <NIC0PCIADDR> -c 0x38 --socket-mem=2,2 \ --file-prefix=bbdev -- -e 0x10 -d 0x20 where, NIC0PCIADDR is the PCI addresse of the Rx port -This command creates one virtual bbdev devices ``turbo_sw`` where the device -gets linked to a corresponding ethernet port as whitelisted by the parameter -w. +This command creates one virtual bbdev devices ``baseband_turbo_sw`` where the +device gets linked to a corresponding ethernet port as whitelisted by +the parameter -w. 3 cores are allocated to the application, and assigned as: - core 3 is the master and used to print the stats live on screen, diff --git a/doc/guides/sample_app_ug/ethtool.rst b/doc/guides/sample_app_ug/ethtool.rst index 1b79aca1..47e09f6e 100644 --- a/doc/guides/sample_app_ug/ethtool.rst +++ b/doc/guides/sample_app_ug/ethtool.rst @@ -44,6 +44,7 @@ they do as as follows: * ``drvinfo``: Print driver info * ``eeprom``: Dump EEPROM to file +* ``module-eeprom``: Dump plugin module EEPROM to file * ``link``: Print port link states * ``macaddr``: Gets/sets MAC address * ``mtu``: Set NIC MTU @@ -97,6 +98,8 @@ the following functions: - ``rte_ethtool_get_eeprom_len()`` - ``rte_ethtool_get_eeprom()`` - ``rte_ethtool_set_eeprom()`` +- ``rte_ethtool_get_module_info()`` +- ``rte_ethtool_get_module_eeprom()`` - ``rte_ethtool_get_pauseparam()`` - ``rte_ethtool_set_pauseparam()`` - ``rte_ethtool_net_open()`` diff --git a/doc/guides/sample_app_ug/flow_classify.rst b/doc/guides/sample_app_ug/flow_classify.rst index 52474774..003ed035 100644 --- a/doc/guides/sample_app_ug/flow_classify.rst +++ b/doc/guides/sample_app_ug/flow_classify.rst @@ -187,7 +187,7 @@ The ``main()`` function also initializes all the ports using the user defined .. code-block:: c - for (portid = 0; portid < nb_ports; portid++) { + RTE_ETH_FOREACH_DEV(portid) { if (port_init(portid, mbuf_pool) != 0) { rte_exit(EXIT_FAILURE, "Cannot init port %" PRIu8 "\n", portid); @@ -279,9 +279,6 @@ Forwarding application is shown below: int retval; uint16_t q; - if (port >= rte_eth_dev_count()) - return -1; - /* Configure the Ethernet device. */ retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf); if (retval != 0) @@ -424,14 +421,13 @@ following: static __attribute__((noreturn)) void lcore_main(cls_app) { - const uint8_t nb_ports = rte_eth_dev_count(); - uint8_t port; + uint16_t port; /* * Check that the port is on the same NUMA node as the polling thread * for best performance. */ - for (port = 0; port < nb_ports; port++) + RTE_ETH_FOREACH_DEV(port) if (rte_eth_dev_socket_id(port) > 0 && rte_eth_dev_socket_id(port) != (int)rte_socket_id()) { printf("\n\n"); @@ -451,7 +447,7 @@ following: * Receive packets on a port and forward them on the paired * port. The mapping is 0 -> 1, 1 -> 0, 2 -> 3, 3 -> 2, etc. */ - for (port = 0; port < nb_ports; port++) { + RTE_ETH_FOREACH_DEV(port) { /* Get burst of RX packets, from first port of pair. */ struct rte_mbuf *bufs[BURST_SIZE]; @@ -501,7 +497,7 @@ The main work of the application is done within the loop: .. code-block:: c for (;;) { - for (port = 0; port < nb_ports; port++) { + RTE_ETH_FOREACH_DEV(port) { /* Get burst of RX packets, from first port of pair. */ struct rte_mbuf *bufs[BURST_SIZE]; diff --git a/doc/guides/sample_app_ug/flow_filtering.rst b/doc/guides/sample_app_ug/flow_filtering.rst index 06230c07..bd0ae1e2 100644 --- a/doc/guides/sample_app_ug/flow_filtering.rst +++ b/doc/guides/sample_app_ug/flow_filtering.rst @@ -1,33 +1,5 @@ -.. BSD LICENSE - Copyright(c) 2017 Mellanox Corporation. All rights reserved. - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions - are met: - - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in - the documentation and/or other materials provided with the - distribution. - * Neither the name of Mellanox Corporation nor the names of its - contributors may be used to endorse or promote products derived - from this software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - +.. SPDX-License-Identifier: BSD-3-Clause + Copyright 2017 Mellanox Technologies, Ltd Basic RTE Flow Filtering Sample Application =========================================== @@ -167,7 +139,6 @@ application is shown below: struct rte_eth_conf port_conf = { .rxmode = { .split_hdr_size = 0, - .ignore_offload_bitfield = 1, .offloads = DEV_RX_OFFLOAD_CRC_STRIP, }, .txmode = { @@ -244,7 +215,6 @@ The Ethernet port is configured with default settings using the struct rte_eth_conf port_conf = { .rxmode = { .split_hdr_size = 0, - .ignore_offload_bitfield = 1, .offloads = DEV_RX_OFFLOAD_CRC_STRIP, }, .txmode = { diff --git a/doc/guides/sample_app_ug/img/ip_pipelines_1.svg b/doc/guides/sample_app_ug/img/ip_pipelines_1.svg deleted file mode 100644 index a114ed82..00000000 --- a/doc/guides/sample_app_ug/img/ip_pipelines_1.svg +++ /dev/null @@ -1,738 +0,0 @@ -<?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!-- Created with Inkscape (http://www.inkscape.org/) --> - -<svg - 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/dev/null diff --git a/doc/guides/sample_app_ug/img/slave_proc_recov.png b/doc/guides/sample_app_ug/img/slave_proc_recov.png Binary files differdeleted file mode 100644 index 62f1f088..00000000 --- a/doc/guides/sample_app_ug/img/slave_proc_recov.png +++ /dev/null diff --git a/doc/guides/sample_app_ug/index.rst b/doc/guides/sample_app_ug/index.rst index e87afda8..5bedf4f6 100644 --- a/doc/guides/sample_app_ug/index.rst +++ b/doc/guides/sample_app_ug/index.rst @@ -44,6 +44,7 @@ Sample Applications User Guides vmdq_dcb_forwarding vhost vhost_scsi + vhost_crypto netmap_compatibility ip_pipeline test_pipeline @@ -82,10 +83,6 @@ Sample Applications User Guides :numref:`figure_client_svr_sym_multi_proc_app` :ref:`figure_client_svr_sym_multi_proc_app` -:numref:`figure_master_slave_proc` :ref:`figure_master_slave_proc` - -:numref:`figure_slave_proc_recov` :ref:`figure_slave_proc_recov` - :numref:`figure_qos_sched_app_arch` :ref:`figure_qos_sched_app_arch` :numref:`figure_pipeline_overview` :ref:`figure_pipeline_overview` diff --git a/doc/guides/sample_app_ug/ip_pipeline.rst b/doc/guides/sample_app_ug/ip_pipeline.rst index 69af6b8d..b75509a0 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 +8,523 @@ 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 + * 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. - * Default: N/A - - * 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 ------------------- - - -Configuration -~~~~~~~~~~~~~ - -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. - - -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: + * Default: ``0.0.0.0`` -Run-time -~~~~~~~~ + * Argument: IP Address of the host running ip pipeline application to be used by + remote TCP based client (telnet, netcat, etc.) for connection. -Each CPU core runs the pipeline instances assigned to it in time sharing mode and in round robin order: +``-p PORT`` -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. + * Optional: Yes -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 -~~~~~~~~~~~~ +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. -Currently, there are no parameters to be passed to a sink device, so -SINK section is not allowed. +.. _ip_pipeline_runtime: -MSGQ section -~~~~~~~~~~~~ +Run-time +~~~~~~~~ -.. _table_ip_pipelines_msgq_section: +The master thread is creating and managing all the application objects based on CLI input. -.. tabularcolumns:: |p{2.5cm}|p{7cm}|p{1.5cm}|p{1.5cm}|p{1.5cm}| +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: -.. table:: Configuration file MSGQ section +1. *Packet processing task*: Process bursts of input packets read from the pipeline input ports. - +---------+--------------------------------------------+----------+------------+---------------+ - | 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. | | | | - +---------+--------------------------------------------+----------+------------+---------------+ +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. +Examples +-------- -EAL section -~~~~~~~~~~~ +.. _table_examples: -The application generates the EAL parameters rather than reading them from the command line. +.. tabularcolumns:: |p{3cm}|p{5cm}|p{4cm}|p{4cm}| -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. +.. 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 | | | + | | | | | + +-----------------------+----------------------+----------------+------------------------------------+ +Command Line Interface (CLI) +---------------------------- -Library of pipeline types -------------------------- +Link +~~~~ -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 configuration :: + 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_ip_pipelines_front_end: - -.. tabularcolumns:: |p{1cm}|p{2cm}|p{12cm}| + Note: The PCI device name must be specified in the Domain:Bus:Device.Function format. -.. 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 diff --git a/doc/guides/sample_app_ug/kernel_nic_interface.rst b/doc/guides/sample_app_ug/kernel_nic_interface.rst index 580d06b5..1b3ee9a5 100644 --- a/doc/guides/sample_app_ug/kernel_nic_interface.rst +++ b/doc/guides/sample_app_ug/kernel_nic_interface.rst @@ -202,74 +202,8 @@ Setup of mbuf pool, driver and queues is similar to the setup done in the :doc:` In addition, one or more kernel NIC interfaces are allocated for each of the configured ports according to the command line parameters. -The code for allocating the kernel NIC interfaces for a specific port is as follows: - -.. code-block:: c - - static int - kni_alloc(uint16_t port_id) - { - uint8_t i; - struct rte_kni *kni; - struct rte_kni_conf conf; - struct kni_port_params **params = kni_port_params_array; - - if (port_id >= RTE_MAX_ETHPORTS || !params[port_id]) - return -1; - - params[port_id]->nb_kni = params[port_id]->nb_lcore_k ? params[port_id]->nb_lcore_k : 1; - - for (i = 0; i < params[port_id]->nb_kni; i++) { - - /* Clear conf at first */ - - memset(&conf, 0, sizeof(conf)); - if (params[port_id]->nb_lcore_k) { - snprintf(conf.name, RTE_KNI_NAMESIZE, "vEth%u_%u", port_id, i); - conf.core_id = params[port_id]->lcore_k[i]; - conf.force_bind = 1; - } else - snprintf(conf.name, RTE_KNI_NAMESIZE, "vEth%u", port_id); - conf.group_id = (uint16_t)port_id; - conf.mbuf_size = MAX_PACKET_SZ; - - /* - * The first KNI device associated to a port - * is the master, for multiple kernel thread - * environment. - */ - - if (i == 0) { - struct rte_kni_ops ops; - struct rte_eth_dev_info dev_info; - - memset(&dev_info, 0, sizeof(dev_info)); rte_eth_dev_info_get(port_id, &dev_info); - - conf.addr = dev_info.pci_dev->addr; - conf.id = dev_info.pci_dev->id; - - /* Get the interface default mac address */ - rte_eth_macaddr_get(port_id, (struct ether_addr *)&conf.mac_addr); - - memset(&ops, 0, sizeof(ops)); - - ops.port_id = port_id; - ops.change_mtu = kni_change_mtu; - ops.config_network_if = kni_config_network_interface; - ops.config_mac_address = kni_config_mac_address; - - kni = rte_kni_alloc(pktmbuf_pool, &conf, &ops); - } else - kni = rte_kni_alloc(pktmbuf_pool, &conf, NULL); - - if (!kni) - rte_exit(EXIT_FAILURE, "Fail to create kni for " - "port: %d\n", port_id); - - params[port_id]->kni[i] = kni; - } - return 0; - } +The code for allocating the kernel NIC interfaces for a specific port is +in the function ``kni_alloc``. The other step in the initialization process that is unique to this sample application is the association of each port with lcores for RX, TX and kernel threads. @@ -280,105 +214,8 @@ is the association of each port with lcores for RX, TX and kernel threads. * Other lcores for pinning the kernel threads on one by one -This is done by using the`kni_port_params_array[]` array, which is indexed by the port ID. -The code is as follows: - -.. code-block:: console - - static int - parse_config(const char *arg) - { - const char *p, *p0 = arg; - char s[256], *end; - unsigned size; - enum fieldnames { - FLD_PORT = 0, - FLD_LCORE_RX, - FLD_LCORE_TX, - _NUM_FLD = KNI_MAX_KTHREAD + 3, - }; - int i, j, nb_token; - char *str_fld[_NUM_FLD]; - unsigned long int_fld[_NUM_FLD]; - uint16_t port_id, nb_kni_port_params = 0; - - memset(&kni_port_params_array, 0, sizeof(kni_port_params_array)); - - while (((p = strchr(p0, '(')) != NULL) && nb_kni_port_params < RTE_MAX_ETHPORTS) { - p++; - if ((p0 = strchr(p, ')')) == NULL) - goto fail; - - size = p0 - p; - - if (size >= sizeof(s)) { - printf("Invalid config parameters\n"); - goto fail; - } - - snprintf(s, sizeof(s), "%.*s", size, p); - nb_token = rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ','); - - if (nb_token <= FLD_LCORE_TX) { - printf("Invalid config parameters\n"); - goto fail; - } - - for (i = 0; i < nb_token; i++) { - errno = 0; - int_fld[i] = strtoul(str_fld[i], &end, 0); - if (errno != 0 || end == str_fld[i]) { - printf("Invalid config parameters\n"); - goto fail; - } - } - - i = 0; - port_id = (uint8_t)int_fld[i++]; - - if (port_id >= RTE_MAX_ETHPORTS) { - printf("Port ID %u could not exceed the maximum %u\n", port_id, RTE_MAX_ETHPORTS); - goto fail; - } - - if (kni_port_params_array[port_id]) { - printf("Port %u has been configured\n", port_id); - goto fail; - } - - kni_port_params_array[port_id] = (struct kni_port_params*)rte_zmalloc("KNI_port_params", sizeof(struct kni_port_params), RTE_CACHE_LINE_SIZE); - kni_port_params_array[port_id]->port_id = port_id; - kni_port_params_array[port_id]->lcore_rx = (uint8_t)int_fld[i++]; - kni_port_params_array[port_id]->lcore_tx = (uint8_t)int_fld[i++]; - - if (kni_port_params_array[port_id]->lcore_rx >= RTE_MAX_LCORE || kni_port_params_array[port_id]->lcore_tx >= RTE_MAX_LCORE) { - printf("lcore_rx %u or lcore_tx %u ID could not " - "exceed the maximum %u\n", - kni_port_params_array[port_id]->lcore_rx, kni_port_params_array[port_id]->lcore_tx, RTE_MAX_LCORE); - goto fail; - } - - for (j = 0; i < nb_token && j < KNI_MAX_KTHREAD; i++, j++) - kni_port_params_array[port_id]->lcore_k[j] = (uint8_t)int_fld[i]; - kni_port_params_array[port_id]->nb_lcore_k = j; - } - - print_config(); - - return 0; - - fail: - - for (i = 0; i < RTE_MAX_ETHPORTS; i++) { - if (kni_port_params_array[i]) { - rte_free(kni_port_params_array[i]); - kni_port_params_array[i] = NULL; - } - } - - return -1; - - } +This is done by using the ``kni_port_params_array[]`` array, which is indexed by the port ID. +The code is in the function ``parse_config``. Packet Forwarding ~~~~~~~~~~~~~~~~~ @@ -387,99 +224,18 @@ After the initialization steps are completed, the main_loop() function is run on This function first checks the lcore_id against the user provided lcore_rx and lcore_tx to see if this lcore is reading from or writing to kernel NIC interfaces. -For the case that reads from a NIC port and writes to the kernel NIC interfaces, +For the case that reads from a NIC port and writes to the kernel NIC interfaces (``kni_ingress``), the packet reception is the same as in L2 Forwarding sample application (see :ref:`l2_fwd_app_rx_tx_packets`). The packet transmission is done by sending mbufs into the kernel NIC interfaces by rte_kni_tx_burst(). The KNI library automatically frees the mbufs after the kernel successfully copied the mbufs. -.. code-block:: c - - /** - * Interface to burst rx and enqueue mbufs into rx_q - */ - - static void - kni_ingress(struct kni_port_params *p) - { - uint8_t i, nb_kni, port_id; - unsigned nb_rx, num; - struct rte_mbuf *pkts_burst[PKT_BURST_SZ]; - - if (p == NULL) - return; - - nb_kni = p->nb_kni; - port_id = p->port_id; - - for (i = 0; i < nb_kni; i++) { - /* Burst rx from eth */ - nb_rx = rte_eth_rx_burst(port_id, 0, pkts_burst, PKT_BURST_SZ); - if (unlikely(nb_rx > PKT_BURST_SZ)) { - RTE_LOG(ERR, APP, "Error receiving from eth\n"); - return; - } - - /* Burst tx to kni */ - num = rte_kni_tx_burst(p->kni[i], pkts_burst, nb_rx); - kni_stats[port_id].rx_packets += num; - rte_kni_handle_request(p->kni[i]); - - if (unlikely(num < nb_rx)) { - /* Free mbufs not tx to kni interface */ - kni_burst_free_mbufs(&pkts_burst[num], nb_rx - num); - kni_stats[port_id].rx_dropped += nb_rx - num; - } - } - } - -For the other case that reads from kernel NIC interfaces and writes to a physical NIC port, packets are retrieved by reading -mbufs from kernel NIC interfaces by `rte_kni_rx_burst()`. +For the other case that reads from kernel NIC interfaces +and writes to a physical NIC port (``kni_egress``), +packets are retrieved by reading mbufs from kernel NIC interfaces by ``rte_kni_rx_burst()``. The packet transmission is the same as in the L2 Forwarding sample application (see :ref:`l2_fwd_app_rx_tx_packets`). -.. code-block:: c - - /** - * Interface to dequeue mbufs from tx_q and burst tx - */ - - static void - - kni_egress(struct kni_port_params *p) - { - uint8_t i, nb_kni, port_id; - unsigned nb_tx, num; - struct rte_mbuf *pkts_burst[PKT_BURST_SZ]; - - if (p == NULL) - return; - - nb_kni = p->nb_kni; - port_id = p->port_id; - - for (i = 0; i < nb_kni; i++) { - /* Burst rx from kni */ - num = rte_kni_rx_burst(p->kni[i], pkts_burst, PKT_BURST_SZ); - if (unlikely(num > PKT_BURST_SZ)) { - RTE_LOG(ERR, APP, "Error receiving from KNI\n"); - return; - } - - /* Burst tx to eth */ - - nb_tx = rte_eth_tx_burst(port_id, 0, pkts_burst, (uint16_t)num); - - kni_stats[port_id].tx_packets += nb_tx; - - if (unlikely(nb_tx < num)) { - /* Free mbufs not tx to NIC */ - kni_burst_free_mbufs(&pkts_burst[nb_tx], num - nb_tx); - kni_stats[port_id].tx_dropped += num - nb_tx; - } - } - } - Callbacks for Kernel Requests ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -492,106 +248,3 @@ Application may choose to not implement following callbacks: - ``config_mac_address`` - ``config_promiscusity`` - - -.. code-block:: c - - static struct rte_kni_ops kni_ops = { - .change_mtu = kni_change_mtu, - .config_network_if = kni_config_network_interface, - .config_mac_address = kni_config_mac_address, - .config_promiscusity = kni_config_promiscusity, - }; - - /* Callback for request of changing MTU */ - - static int - kni_change_mtu(uint16_t port_id, unsigned new_mtu) - { - int ret; - struct rte_eth_conf conf; - - if (port_id >= rte_eth_dev_count()) { - RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id); - return -EINVAL; - } - - RTE_LOG(INFO, APP, "Change MTU of port %d to %u\n", port_id, new_mtu); - - /* Stop specific port */ - - rte_eth_dev_stop(port_id); - - memcpy(&conf, &port_conf, sizeof(conf)); - - /* Set new MTU */ - - if (new_mtu > ETHER_MAX_LEN) - conf.rxmode.jumbo_frame = 1; - else - conf.rxmode.jumbo_frame = 0; - - /* mtu + length of header + length of FCS = max pkt length */ - - conf.rxmode.max_rx_pkt_len = new_mtu + KNI_ENET_HEADER_SIZE + KNI_ENET_FCS_SIZE; - - ret = rte_eth_dev_configure(port_id, 1, 1, &conf); - if (ret < 0) { - RTE_LOG(ERR, APP, "Fail to reconfigure port %d\n", port_id); - return ret; - } - - /* Restart specific port */ - - ret = rte_eth_dev_start(port_id); - if (ret < 0) { - RTE_LOG(ERR, APP, "Fail to restart port %d\n", port_id); - return ret; - } - - return 0; - } - - /* Callback for request of configuring network interface up/down */ - - static int - kni_config_network_interface(uint16_t port_id, uint8_t if_up) - { - int ret = 0; - - if (port_id >= rte_eth_dev_count() || port_id >= RTE_MAX_ETHPORTS) { - RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id); - return -EINVAL; - } - - RTE_LOG(INFO, APP, "Configure network interface of %d %s\n", - - port_id, if_up ? "up" : "down"); - - if (if_up != 0) { - /* Configure network interface up */ - rte_eth_dev_stop(port_id); - ret = rte_eth_dev_start(port_id); - } else /* Configure network interface down */ - rte_eth_dev_stop(port_id); - - if (ret < 0) - RTE_LOG(ERR, APP, "Failed to start port %d\n", port_id); - return ret; - } - - /* Callback for request of configuring device mac address */ - - static int - kni_config_mac_address(uint16_t port_id, uint8_t mac_addr[]) - { - ..... - } - - /* Callback for request of configuring promiscuous mode */ - - static int - kni_config_promiscusity(uint16_t port_id, uint8_t to_on) - { - ..... - } diff --git a/doc/guides/sample_app_ug/l2_forward_job_stats.rst b/doc/guides/sample_app_ug/l2_forward_job_stats.rst index bfdf9c8f..ba73d855 100644 --- a/doc/guides/sample_app_ug/l2_forward_job_stats.rst +++ b/doc/guides/sample_app_ug/l2_forward_job_stats.rst @@ -178,11 +178,6 @@ in the *DPDK Programmer's Guide* and the *DPDK API Reference*. .. code-block:: c - nb_ports = rte_eth_dev_count(); - - if (nb_ports == 0) - rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n"); - /* reset l2fwd_dst_ports */ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) @@ -193,7 +188,7 @@ in the *DPDK Programmer's Guide* and the *DPDK API Reference*. /* * Each logical core is assigned a dedicated TX queue on each port. */ - for (portid = 0; portid < nb_ports; portid++) { + RTE_ETH_FOREACH_DEV(portid) { /* skip ports that are not enabled */ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) continue; @@ -223,25 +218,6 @@ The rte_eth_dev_configure() function is used to configure the number of queues f "err=%d, port=%u\n", ret, portid); -The global configuration is stored in a static structure: - -.. code-block:: c - - static const struct rte_eth_conf port_conf = { - .rxmode = { - .split_hdr_size = 0, - .header_split = 0, /**< Header Split disabled */ - .hw_ip_checksum = 0, /**< IP checksum offload disabled */ - .hw_vlan_filter = 0, /**< VLAN filtering disabled */ - .jumbo_frame = 0, /**< Jumbo Frame Support disabled */ - .hw_strip_crc= 0, /**< CRC stripped by hardware */ - }, - - .txmode = { - .mq_mode = ETH_DCB_NONE - }, - }; - RX Queue Initialization ~~~~~~~~~~~~~~~~~~~~~~~ diff --git a/doc/guides/sample_app_ug/l2_forward_real_virtual.rst b/doc/guides/sample_app_ug/l2_forward_real_virtual.rst index f02be05c..2b2d5afa 100644 --- a/doc/guides/sample_app_ug/l2_forward_real_virtual.rst +++ b/doc/guides/sample_app_ug/l2_forward_real_virtual.rst @@ -197,11 +197,6 @@ in the *DPDK Programmer's Guide* - Rel 1.4 EAR and the *DPDK API Reference*. if (rte_pci_probe() < 0) rte_exit(EXIT_FAILURE, "Cannot probe PCI\n"); - nb_ports = rte_eth_dev_count(); - - if (nb_ports == 0) - rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n"); - /* reset l2fwd_dst_ports */ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) @@ -213,7 +208,7 @@ in the *DPDK Programmer's Guide* - Rel 1.4 EAR and the *DPDK API Reference*. * Each logical core is assigned a dedicated TX queue on each port. */ - for (portid = 0; portid < nb_ports; portid++) { + RTE_ETH_FOREACH_DEV(portid) { /* skip ports that are not enabled */ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) @@ -250,25 +245,6 @@ The rte_eth_dev_configure() function is used to configure the number of queues f "err=%d, port=%u\n", ret, portid); -The global configuration is stored in a static structure: - -.. code-block:: c - - static const struct rte_eth_conf port_conf = { - .rxmode = { - .split_hdr_size = 0, - .header_split = 0, /**< Header Split disabled */ - .hw_ip_checksum = 0, /**< IP checksum offload disabled */ - .hw_vlan_filter = 0, /**< VLAN filtering disabled */ - .jumbo_frame = 0, /**< Jumbo Frame Support disabled */ - .hw_strip_crc= 0, /**< CRC stripped by hardware */ - }, - - .txmode = { - .mq_mode = ETH_DCB_NONE - }, - }; - .. _l2_fwd_app_rx_init: RX Queue Initialization diff --git a/doc/guides/sample_app_ug/link_status_intr.rst b/doc/guides/sample_app_ug/link_status_intr.rst index 8fa6d76c..c7665fe5 100644 --- a/doc/guides/sample_app_ug/link_status_intr.rst +++ b/doc/guides/sample_app_ug/link_status_intr.rst @@ -91,15 +91,11 @@ To fully understand this code, it is recommended to study the chapters that rela if (rte_pci_probe() < 0) rte_exit(EXIT_FAILURE, "Cannot probe PCI\n"); - nb_ports = rte_eth_dev_count(); - if (nb_ports == 0) - rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n"); - /* * Each logical core is assigned a dedicated TX queue on each port. */ - for (portid = 0; portid < nb_ports; portid++) { + RTE_ETH_FOREACH_DEV(portid) { /* skip ports that are not enabled */ if ((lsi_enabled_port_mask & (1 << portid)) == 0) @@ -141,10 +137,7 @@ The global configuration is stored in a static structure: static const struct rte_eth_conf port_conf = { .rxmode = { .split_hdr_size = 0, - .header_split = 0, /**< Header Split disabled */ - .hw_ip_checksum = 0, /**< IP checksum offload disabled */ - .hw_vlan_filter = 0, /**< VLAN filtering disabled */ - .hw_strip_crc= 0, /**< CRC stripped by hardware */ + .offloads = DEV_RX_OFFLOAD_CRC_STRIP, }, .txmode = {}, .intr_conf = { diff --git a/doc/guides/sample_app_ug/multi_process.rst b/doc/guides/sample_app_ug/multi_process.rst index b84e9a74..9c374da6 100644 --- a/doc/guides/sample_app_ug/multi_process.rst +++ b/doc/guides/sample_app_ug/multi_process.rst @@ -321,409 +321,3 @@ In both the server and the client processes, outgoing packets are buffered befor so as to allow the sending of multiple packets in a single burst to improve efficiency. For example, the client process will buffer packets to send, until either the buffer is full or until we receive no further packets from the server. - -Master-slave Multi-process Example -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - -The fourth example of DPDK multi-process support demonstrates a master-slave model that -provide the capability of application recovery if a slave process crashes or meets unexpected conditions. -In addition, it also demonstrates the floating process, -which can run among different cores in contrast to the traditional way of binding a process/thread to a specific CPU core, -using the local cache mechanism of mempool structures. - -This application performs the same functionality as the L2 Forwarding sample application, -therefore this chapter does not cover that part but describes functionality that is introduced in this multi-process example only. -Please refer to :doc:`l2_forward_real_virtual` for more information. - -Unlike previous examples where all processes are started from the command line with input arguments, in this example, -only one process is spawned from the command line and that process creates other processes. -The following section describes this in more detail. - -Master-slave Process Models -^^^^^^^^^^^^^^^^^^^^^^^^^^^ - -The process spawned from the command line is called the *master process* in this document. -A process created by the master is called a *slave process*. -The application has only one master process, but could have multiple slave processes. - -Once the master process begins to run, it tries to initialize all the resources such as -memory, CPU cores, driver, ports, and so on, as the other examples do. -Thereafter, it creates slave processes, as shown in the following figure. - -.. _figure_master_slave_proc: - -.. figure:: img/master_slave_proc.* - - Master-slave Process Workflow - - -The master process calls the rte_eal_mp_remote_launch() EAL function to launch an application function for each pinned thread through the pipe. -Then, it waits to check if any slave processes have exited. -If so, the process tries to re-initialize the resources that belong to that slave and launch them in the pinned thread entry again. -The following section describes the recovery procedures in more detail. - -For each pinned thread in EAL, after reading any data from the pipe, it tries to call the function that the application specified. -In this master specified function, a fork() call creates a slave process that performs the L2 forwarding task. -Then, the function waits until the slave exits, is killed or crashes. Thereafter, it notifies the master of this event and returns. -Finally, the EAL pinned thread waits until the new function is launched. - -After discussing the master-slave model, it is necessary to mention another issue, global and static variables. - -For multiple-thread cases, all global and static variables have only one copy and they can be accessed by any thread if applicable. -So, they can be used to sync or share data among threads. - -In the previous examples, each process has separate global and static variables in memory and are independent of each other. -If it is necessary to share the knowledge, some communication mechanism should be deployed, such as, memzone, ring, shared memory, and so on. -The global or static variables are not a valid approach to share data among processes. -For variables in this example, on the one hand, the slave process inherits all the knowledge of these variables after being created by the master. -On the other hand, other processes cannot know if one or more processes modifies them after slave creation since that -is the nature of a multiple process address space. -But this does not mean that these variables cannot be used to share or sync data; it depends on the use case. -The following are the possible use cases: - -#. The master process starts and initializes a variable and it will never be changed after slave processes created. This case is OK. - -#. After the slave processes are created, the master or slave cores need to change a variable, but other processes do not need to know the change. - This case is also OK. - -#. After the slave processes are created, the master or a slave needs to change a variable. - In the meantime, one or more other process needs to be aware of the change. - In this case, global and static variables cannot be used to share knowledge. Another communication mechanism is needed. - A simple approach without lock protection can be a heap buffer allocated by rte_malloc or mem zone. - -Slave Process Recovery Mechanism -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - -Before talking about the recovery mechanism, it is necessary to know what is needed before a new slave instance can run if a previous one exited. - -When a slave process exits, the system returns all the resources allocated for this process automatically. -However, this does not include the resources that were allocated by the DPDK. All the hardware resources are shared among the processes, -which include memzone, mempool, ring, a heap buffer allocated by the rte_malloc library, and so on. -If the new instance runs and the allocated resource is not returned, either resource allocation failed or the hardware resource is lost forever. - -When a slave process runs, it may have dependencies on other processes. -They could have execution sequence orders; they could share the ring to communicate; they could share the same port for reception and forwarding; -they could use lock structures to do exclusive access in some critical path. -What happens to the dependent process(es) if the peer leaves? -The consequence are varied since the dependency cases are complex. -It depends on what the processed had shared. -However, it is necessary to notify the peer(s) if one slave exited. -Then, the peer(s) will be aware of that and wait until the new instance begins to run. - -Therefore, to provide the capability to resume the new slave instance if the previous one exited, it is necessary to provide several mechanisms: - -#. Keep a resource list for each slave process. - Before a slave process run, the master should prepare a resource list. - After it exits, the master could either delete the allocated resources and create new ones, - or re-initialize those for use by the new instance. - -#. Set up a notification mechanism for slave process exit cases. After the specific slave leaves, - the master should be notified and then help to create a new instance. - This mechanism is provided in Section `Master-slave Process Models`_. - -#. Use a synchronization mechanism among dependent processes. - The master should have the capability to stop or kill slave processes that have a dependency on the one that has exited. - Then, after the new instance of exited slave process begins to run, the dependency ones could resume or run from the start. - The example sends a STOP command to slave processes dependent on the exited one, then they will exit. - Thereafter, the master creates new instances for the exited slave processes. - -The following diagram describes slave process recovery. - -.. _figure_slave_proc_recov: - -.. figure:: img/slave_proc_recov.* - - Slave Process Recovery Process Flow - - -Floating Process Support -^^^^^^^^^^^^^^^^^^^^^^^^ - -When the DPDK application runs, there is always a -c option passed in to indicate the cores that are enabled. -Then, the DPDK creates a thread for each enabled core. -By doing so, it creates a 1:1 mapping between the enabled core and each thread. -The enabled core always has an ID, therefore, each thread has a unique core ID in the DPDK execution environment. -With the ID, each thread can easily access the structures or resources exclusively belonging to it without using function parameter passing. -It can easily use the rte_lcore_id() function to get the value in every function that is called. - -For threads/processes not created in that way, either pinned to a core or not, they will not own a unique ID and the -rte_lcore_id() function will not work in the correct way. -However, sometimes these threads/processes still need the unique ID mechanism to do easy access on structures or resources. -For example, the DPDK mempool library provides a local cache mechanism -(refer to :ref:`mempool_local_cache`) -for fast element allocation and freeing. -If using a non-unique ID or a fake one, -a race condition occurs if two or more threads/ processes with the same core ID try to use the local cache. - -Therefore, unused core IDs from the passing of parameters with the -c option are used to organize the core ID allocation array. -Once the floating process is spawned, it tries to allocate a unique core ID from the array and release it on exit. - -A natural way to spawn a floating process is to use the fork() function and allocate a unique core ID from the unused core ID array. -However, it is necessary to write new code to provide a notification mechanism for slave exit -and make sure the process recovery mechanism can work with it. - -To avoid producing redundant code, the Master-Slave process model is still used to spawn floating processes, -then cancel the affinity to specific cores. -Besides that, clear the core ID assigned to the DPDK spawning a thread that has a 1:1 mapping with the core mask. -Thereafter, get a new core ID from the unused core ID allocation array. - -Run the Application -^^^^^^^^^^^^^^^^^^^ - -This example has a command line similar to the L2 Forwarding sample application with a few differences. - -To run the application, start one copy of the l2fwd_fork binary in one terminal. -Unlike the L2 Forwarding example, -this example requires at least three cores since the master process will wait and be accountable for slave process recovery. -The command is as follows: - -.. code-block:: console - - #./build/l2fwd_fork -l 2-4 -n 4 -- -p 3 -f - -This example provides another -f option to specify the use of floating process. -If not specified, the example will use a pinned process to perform the L2 forwarding task. - -To verify the recovery mechanism, proceed as follows: First, check the PID of the slave processes: - -.. code-block:: console - - #ps -fe | grep l2fwd_fork - root 5136 4843 29 11:11 pts/1 00:00:05 ./build/l2fwd_fork - root 5145 5136 98 11:11 pts/1 00:00:11 ./build/l2fwd_fork - root 5146 5136 98 11:11 pts/1 00:00:11 ./build/l2fwd_fork - -Then, kill one of the slaves: - -.. code-block:: console - - #kill -9 5145 - -After 1 or 2 seconds, check whether the slave has resumed: - -.. code-block:: console - - #ps -fe | grep l2fwd_fork - root 5136 4843 3 11:11 pts/1 00:00:06 ./build/l2fwd_fork - root 5247 5136 99 11:14 pts/1 00:00:01 ./build/l2fwd_fork - root 5248 5136 99 11:14 pts/1 00:00:01 ./build/l2fwd_fork - -It can also monitor the traffic generator statics to see whether slave processes have resumed. - -Explanation -^^^^^^^^^^^ - -As described in previous sections, -not all global and static variables need to change to be accessible in multiple processes; -it depends on how they are used. -In this example, -the statics info on packets dropped/forwarded/received count needs to be updated by the slave process, -and the master needs to see the update and print them out. -So, it needs to allocate a heap buffer using rte_zmalloc. -In addition, if the -f option is specified, -an array is needed to store the allocated core ID for the floating process so that the master can return it -after a slave has exited accidentally. - -.. code-block:: c - - static int - l2fwd_malloc_shared_struct(void) - { - port_statistics = rte_zmalloc("port_stat", sizeof(struct l2fwd_port_statistics) * RTE_MAX_ETHPORTS, 0); - - if (port_statistics == NULL) - return -1; - - /* allocate mapping_id array */ - - if (float_proc) { - int i; - - mapping_id = rte_malloc("mapping_id", sizeof(unsigned) * RTE_MAX_LCORE, 0); - if (mapping_id == NULL) - return -1; - - for (i = 0 ;i < RTE_MAX_LCORE; i++) - mapping_id[i] = INVALID_MAPPING_ID; - - } - return 0; - } - -For each slave process, packets are received from one port and forwarded to another port that another slave is operating on. -If the other slave exits accidentally, the port it is operating on may not work normally, -so the first slave cannot forward packets to that port. -There is a dependency on the port in this case. So, the master should recognize the dependency. -The following is the code to detect this dependency: - -.. code-block:: c - - for (portid = 0; portid < nb_ports; portid++) { - /* skip ports that are not enabled */ - - if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) - continue; - - /* Find pair ports' lcores */ - - find_lcore = find_pair_lcore = 0; - pair_port = l2fwd_dst_ports[portid]; - - for (i = 0; i < RTE_MAX_LCORE; i++) { - if (!rte_lcore_is_enabled(i)) - continue; - - for (j = 0; j < lcore_queue_conf[i].n_rx_port;j++) { - if (lcore_queue_conf[i].rx_port_list[j] == portid) { - lcore = i; - find_lcore = 1; - break; - } - - if (lcore_queue_conf[i].rx_port_list[j] == pair_port) { - pair_lcore = i; - find_pair_lcore = 1; - break; - } - } - - if (find_lcore && find_pair_lcore) - break; - } - - if (!find_lcore || !find_pair_lcore) - rte_exit(EXIT_FAILURE, "Not find port=%d pair\\n", portid); - - printf("lcore %u and %u paired\\n", lcore, pair_lcore); - - lcore_resource[lcore].pair_id = pair_lcore; - lcore_resource[pair_lcore].pair_id = lcore; - } - -Before launching the slave process, -it is necessary to set up the communication channel between the master and slave so that -the master can notify the slave if its peer process with the dependency exited. -In addition, the master needs to register a callback function in the case where a specific slave exited. - -.. code-block:: c - - for (i = 0; i < RTE_MAX_LCORE; i++) { - if (lcore_resource[i].enabled) { - /* Create ring for master and slave communication */ - - ret = create_ms_ring(i); - if (ret != 0) - rte_exit(EXIT_FAILURE, "Create ring for lcore=%u failed",i); - - if (flib_register_slave_exit_notify(i,slave_exit_cb) != 0) - rte_exit(EXIT_FAILURE, "Register master_trace_slave_exit failed"); - } - } - -After launching the slave process, the master waits and prints out the port statics periodically. -If an event indicating that a slave process exited is detected, -it sends the STOP command to the peer and waits until it has also exited. -Then, it tries to clean up the execution environment and prepare new resources. -Finally, the new slave instance is launched. - -.. code-block:: c - - while (1) { - sleep(1); - cur_tsc = rte_rdtsc(); - diff_tsc = cur_tsc - prev_tsc; - - /* if timer is enabled */ - - if (timer_period > 0) { - /* advance the timer */ - timer_tsc += diff_tsc; - - /* if timer has reached its timeout */ - if (unlikely(timer_tsc >= (uint64_t) timer_period)) { - print_stats(); - - /* reset the timer */ - timer_tsc = 0; - } - } - - prev_tsc = cur_tsc; - - /* Check any slave need restart or recreate */ - - rte_spinlock_lock(&res_lock); - - for (i = 0; i < RTE_MAX_LCORE; i++) { - struct lcore_resource_struct *res = &lcore_resource[i]; - struct lcore_resource_struct *pair = &lcore_resource[res->pair_id]; - - /* If find slave exited, try to reset pair */ - - if (res->enabled && res->flags && pair->enabled) { - if (!pair->flags) { - master_sendcmd_with_ack(pair->lcore_id, CMD_STOP); - rte_spinlock_unlock(&res_lock); - sleep(1); - rte_spinlock_lock(&res_lock); - if (pair->flags) - continue; - } - - if (reset_pair(res->lcore_id, pair->lcore_id) != 0) - rte_exit(EXIT_FAILURE, "failed to reset slave"); - - res->flags = 0; - pair->flags = 0; - } - } - rte_spinlock_unlock(&res_lock); - } - -When the slave process is spawned and starts to run, it checks whether the floating process option is applied. -If so, it clears the affinity to a specific core and also sets the unique core ID to 0. -Then, it tries to allocate a new core ID. -Since the core ID has changed, the resource allocated by the master cannot work, -so it remaps the resource to the new core ID slot. - -.. code-block:: c - - static int - l2fwd_launch_one_lcore( attribute ((unused)) void *dummy) - { - unsigned lcore_id = rte_lcore_id(); - - if (float_proc) { - unsigned flcore_id; - - /* Change it to floating process, also change it's lcore_id */ - - clear_cpu_affinity(); - - RTE_PER_LCORE(_lcore_id) = 0; - - /* Get a lcore_id */ - - if (flib_assign_lcore_id() < 0 ) { - printf("flib_assign_lcore_id failed\n"); - return -1; - } - - flcore_id = rte_lcore_id(); - - /* Set mapping id, so master can return it after slave exited */ - - mapping_id[lcore_id] = flcore_id; - printf("Org lcore_id = %u, cur lcore_id = %u\n",lcore_id, flcore_id); - remapping_slave_resource(lcore_id, flcore_id); - } - - l2fwd_main_loop(); - - /* return lcore_id before return */ - if (float_proc) { - flib_free_lcore_id(rte_lcore_id()); - mapping_id[lcore_id] = INVALID_MAPPING_ID; - } - return 0; - } diff --git a/doc/guides/sample_app_ug/quota_watermark.rst b/doc/guides/sample_app_ug/quota_watermark.rst index 8baec4df..67200e15 100644 --- a/doc/guides/sample_app_ug/quota_watermark.rst +++ b/doc/guides/sample_app_ug/quota_watermark.rst @@ -163,7 +163,7 @@ Then, a call to init_dpdk(), defined in init.c, is made to initialize the poll m if (ret < 0) rte_exit(EXIT_FAILURE, "rte_pci_probe(): error %d\n", ret); - if (rte_eth_dev_count() < 2) + if (rte_eth_dev_count_avail() < 2) rte_exit(EXIT_FAILURE, "Not enough Ethernet port available\n"); } diff --git a/doc/guides/sample_app_ug/rxtx_callbacks.rst b/doc/guides/sample_app_ug/rxtx_callbacks.rst index 0bb0d3e0..85d96d8a 100644 --- a/doc/guides/sample_app_ug/rxtx_callbacks.rst +++ b/doc/guides/sample_app_ug/rxtx_callbacks.rst @@ -83,9 +83,6 @@ comments: int retval; uint16_t q; - if (port >= rte_eth_dev_count()) - return -1; - /* Configure the Ethernet device. */ retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf); if (retval != 0) diff --git a/doc/guides/sample_app_ug/skeleton.rst b/doc/guides/sample_app_ug/skeleton.rst index 0503584d..95956171 100644 --- a/doc/guides/sample_app_ug/skeleton.rst +++ b/doc/guides/sample_app_ug/skeleton.rst @@ -81,7 +81,7 @@ The ``main()`` function also initializes all the ports using the user defined .. code-block:: c - for (portid = 0; portid < nb_ports; portid++) { + RTE_ETH_FOREACH_DEV(portid) { if (port_init(portid, mbuf_pool) != 0) { rte_exit(EXIT_FAILURE, "Cannot init port %" PRIu8 "\n", portid); @@ -119,7 +119,7 @@ Forwarding application is shown below: int retval; uint16_t q; - if (port >= rte_eth_dev_count()) + if (!rte_eth_dev_is_valid_port(port)) return -1; /* Configure the Ethernet device. */ @@ -192,14 +192,13 @@ looks like the following: static __attribute__((noreturn)) void lcore_main(void) { - const uint16_t nb_ports = rte_eth_dev_count(); uint16_t port; /* * Check that the port is on the same NUMA node as the polling thread * for best performance. */ - for (port = 0; port < nb_ports; port++) + RTE_ETH_FOREACH_DEV(port) if (rte_eth_dev_socket_id(port) > 0 && rte_eth_dev_socket_id(port) != (int)rte_socket_id()) @@ -216,7 +215,7 @@ looks like the following: * Receive packets on a port and forward them on the paired * port. The mapping is 0 -> 1, 1 -> 0, 2 -> 3, 3 -> 2, etc. */ - for (port = 0; port < nb_ports; port++) { + RTE_ETH_FOREACH_DEV(port) { /* Get burst of RX packets, from first port of pair. */ struct rte_mbuf *bufs[BURST_SIZE]; @@ -246,7 +245,7 @@ The main work of the application is done within the loop: .. code-block:: c for (;;) { - for (port = 0; port < nb_ports; port++) { + RTE_ETH_FOREACH_DEV(port) { /* Get burst of RX packets, from first port of pair. */ struct rte_mbuf *bufs[BURST_SIZE]; diff --git a/doc/guides/sample_app_ug/vhost.rst b/doc/guides/sample_app_ug/vhost.rst index a4bdc6a4..fd42cb3f 100644 --- a/doc/guides/sample_app_ug/vhost.rst +++ b/doc/guides/sample_app_ug/vhost.rst @@ -147,7 +147,10 @@ retries on an RX burst, it takes effect only when rx retry is enabled. The default value is 15. **--dequeue-zero-copy** -Dequeue zero copy will be enabled when this option is given. +Dequeue zero copy will be enabled when this option is given. it is worth to +note that if NIC is binded to driver with iommu enabled, dequeue zero copy +cannot work at VM2NIC mode (vm2vm=0) due to currently we don't setup iommu +dma mapping for guest memory. **--vlan-strip 0|1** VLAN strip option is removed, because different NICs have different behaviors @@ -155,6 +158,10 @@ when disabling VLAN strip. Such feature, which heavily depends on hardware, should be removed from this example to reduce confusion. Now, VLAN strip is enabled and cannot be disabled. +**--builtin-net-driver** +A very simple vhost-user net driver which demonstrates how to use the generic +vhost APIs will be used when this option is given. It is disabled by default. + Common Issues ------------- @@ -175,15 +182,22 @@ Common Issues The command above indicates how many hugepages are free to support QEMU's allocation request. -* vhost-user will not work with QEMU without the ``-mem-prealloc`` option +* Failed to build DPDK in VM - The current implementation works properly only when the guest memory is - pre-allocated. + Make sure "-cpu host" QEMU option is given. -* vhost-user will not work with a QEMU version without shared memory mapping: +* Device start fails if NIC's max queues > the default number of 128 - Make sure ``share=on`` QEMU option is given. + mbuf pool size is dependent on the MAX_QUEUES configuration, if NIC's + max queue number is larger than 128, device start will fail due to + insufficient mbuf. -* Failed to build DPDK in VM + Change the default number to make it work as below, just set the number + according to the NIC's property. :: - Make sure "-cpu host" QEMU option is given. + make EXTRA_CFLAGS="-DMAX_QUEUES=320" + +* Option "builtin-net-driver" is incompatible with QEMU + + QEMU vhost net device start will fail if protocol feature is not negotiated. + DPDK virtio-user pmd can be the replacement of QEMU. diff --git a/doc/guides/sample_app_ug/vhost_crypto.rst b/doc/guides/sample_app_ug/vhost_crypto.rst new file mode 100644 index 00000000..65c86a53 --- /dev/null +++ b/doc/guides/sample_app_ug/vhost_crypto.rst @@ -0,0 +1,82 @@ +.. SPDX-License-Identifier: BSD-3-Clause + Copyright(c) 2017-2018 Intel Corporation. + +Vhost_Crypto Sample Application +=============================== + +The vhost_crypto sample application implemented a simple Crypto device, +which used as the backend of Qemu vhost-user-crypto device. Similar with +vhost-user-net and vhost-user-scsi device, the sample application used +domain socket to communicate with Qemu, and the virtio ring was processed +by vhost_crypto sample application. + +Testing steps +------------- + +This section shows the steps how to start a VM with the crypto device as +fast data path for critical application. + +Compiling the Application +------------------------- + +To compile the sample application see :doc:`compiling`. + +The application is located in the ``examples`` sub-directory. + +Start the vhost_crypto example +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. code-block:: console + + ./vhost_crypto [EAL options] -- [--socket-file PATH] + [--cdev-id ID] [--cdev-queue-id ID] [--zero-copy] [--guest-polling] + +where, + +* socket-file PATH: the path of UNIX socket file to be created, multiple + instances of this config item is supported. Upon absence of this item, + the default socket-file `/tmp/vhost_crypto1.socket` is used. + +* cdev-id ID: the target DPDK Cryptodev's ID to process the actual crypto + workload. Upon absence of this item the default value of `0` will be used. + For details of DPDK Cryptodev, please refer to DPDK Cryptodev Library + Programmers' Guide. + +* cdev-queue-id ID: the target DPDK Cryptodev's queue ID to process the + actual crypto workload. Upon absence of this item the default value of `0` + will be used. For details of DPDK Cryptodev, please refer to DPDK Cryptodev + Library Programmers' Guide. + +* zero-copy: the presence of this item means the ZERO-COPY feature will be + enabled. Otherwise it is disabled. PLEASE NOTE the ZERO-COPY feature is still + in experimental stage and may cause the problem like segmentation fault. If + the user wants to use LKCF in the guest, this feature shall be turned off. + +* guest-polling: the presence of this item means the application assumes the + guest works in polling mode, thus will NOT notify the guest completion of + processing. + +The application requires that crypto devices capable of performing +the specified crypto operation are available on application initialization. +This means that HW crypto device/s must be bound to a DPDK driver or +a SW crypto device/s (virtual crypto PMD) must be created (using --vdev). + +.. _vhost_crypto_app_run_vm: + +Start the VM +~~~~~~~~~~~~ + +.. code-block:: console + + qemu-system-x86_64 -machine accel=kvm \ + -m $mem -object memory-backend-file,id=mem,size=$mem,\ + mem-path=/dev/hugepages,share=on -numa node,memdev=mem \ + -drive file=os.img,if=none,id=disk \ + -device ide-hd,drive=disk,bootindex=0 \ + -chardev socket,id={chardev_id},path={PATH} \ + -object cryptodev-vhost-user,id={obj_id},chardev={chardev_id} \ + -device virtio-crypto-pci,id={dev_id},cryptodev={obj_id} \ + ... + +.. note:: + You must check whether your Qemu can support "vhost-user-crypto" or not. diff --git a/doc/guides/sample_app_ug/vm_power_management.rst b/doc/guides/sample_app_ug/vm_power_management.rst index cd7c7f34..855570d6 100644 --- a/doc/guides/sample_app_ug/vm_power_management.rst +++ b/doc/guides/sample_app_ug/vm_power_management.rst @@ -20,7 +20,7 @@ running on Virtual Machines(VMs). The Virtual Machine Power Management solution shows an example of how a DPDK application can indicate its processing requirements using VM local -only information(vCPU/lcore) to a Host based Monitor which is responsible +only information(vCPU/lcore, etc.) to a Host based Monitor which is responsible for accepting requests for frequency changes for a vCPU, translating the vCPU to a pCPU via libvirt and affecting the change in frequency. @@ -38,6 +38,26 @@ The solution is comprised of two high-level components: to the librte_power ACPI cpufreq sysfs based library. The Host Application relies on both qemu-kvm and libvirt to function. + This monitoring application is responsible for: + + - Accepting requests from client applications: Client applications can + request frequency changes for a vCPU, translating + the vCPU to a pCPU via libvirt and affecting the change in frequency. + + - Accepting policies from client applications: Client application can + send a policy to the host application. The + host application will then apply the rules of the policy independent + of the application. For example, the policy can contain time-of-day + information for busy/quiet periods, and the host application can scale + up/down the relevant cores when required. See the details of the guest + application below for more information on setting the policy values. + + - Out-of-band monitoring of workloads via cores hardware event counters: + The host application can manage power for an application in a virtualised + OR non-virtualised environment by looking at the event counters of the + cores and taking action based on the branch hit/miss ratio. See the host + application '--core-list' command line parameter below. + #. librte_power for Virtual Machines Using an alternate implementation for the librte_power API, requests for @@ -174,13 +194,20 @@ Compiling and Running the Host Application Compiling ~~~~~~~~~ -Compiling the Application -------------------------- - -To compile the sample application see :doc:`compiling`. +For information on compiling DPDK and the sample applications +see :doc:`compiling`. The application is located in the ``vm_power_manager`` sub-directory. +To build just the ``vm_power_manager`` application: + +.. code-block:: console + + export RTE_SDK=/path/to/rte_sdk + export RTE_TARGET=build + cd ${RTE_SDK}/examples/vm_power_manager/ + make + Running ~~~~~~~ @@ -287,38 +314,129 @@ Manual control and inspection can also be carried in relation CPU frequency scal set_cpu_freq {core_num} up|down|min|max +There are also some command line parameters for enabling the out-of-band +monitoring of branch ratio on cores doing busy polling via PMDs. + + .. code-block:: console + + --core-list {list of cores} + + When this parameter is used, the list of cores specified will monitor the ratio + between branch hits and branch misses. A tightly polling PMD thread will have a + very low branch ratio, so the core frequency will be scaled down to the minimim + allowed value. When packets are received, the code path will alter, causing the + branch ratio to increase. When the ratio goes above the ratio threshold, the + core frequency will be scaled up to the maximum allowed value. + + .. code-block:: console + + --branch-ratio {ratio} + + The branch ratio is a floating point number that specifies the threshold at which + to scale up or down for the given workload. The default branch ratio is 0.01, + and will need to be adjusted for different workloads. + + Compiling and Running the Guest Applications -------------------------------------------- -For compiling and running l3fwd-power, see :doc:`l3_forward_power_man`. +l3fwd-power is one sample application that can be used with vm_power_manager. A guest CLI is also provided for validating the setup. For both l3fwd-power and guest CLI, the channels for the VM must be monitored by the -host application using the *add_channels* command on the host. +host application using the *add_channels* command on the host. This typically uses +the following commands in the host application: + +.. code-block:: console + + vm_power> add_vm vmname + vm_power> add_channels vmname all + vm_power> set_channel_status vmname all enabled + vm_power> show_vm vmname + Compiling ~~~~~~~~~ -#. export RTE_SDK=/path/to/rte_sdk -#. cd ${RTE_SDK}/examples/vm_power_manager/guest_cli -#. make +For information on compiling DPDK and the sample applications +see :doc:`compiling`. + +For compiling and running l3fwd-power, see :doc:`l3_forward_power_man`. + +The application is located in the ``guest_cli`` sub-directory under ``vm_power_manager``. + +To build just the ``guest_vm_power_manager`` application: + +.. code-block:: console + + export RTE_SDK=/path/to/rte_sdk + export RTE_TARGET=build + cd ${RTE_SDK}/examples/vm_power_manager/guest_cli/ + make Running ~~~~~~~ -The application does not have any specific command line options other than *EAL*: +The standard *EAL* command line parameters are required: .. code-block:: console - ./build/vm_power_mgr [EAL options] + ./build/guest_vm_power_mgr [EAL options] -- [guest options] -The application for example purposes uses a channel for each lcore enabled, -for example to run on cores 0,1,2,3 on a system with 4 memory channels: +The guest example uses a channel for each lcore enabled. For example, +to run on cores 0,1,2,3: .. code-block:: console - ./build/guest_vm_power_mgr -l 0-3 -n 4 + ./build/guest_vm_power_mgr -l 0-3 + +Optionally, there is a list of command line parameter should the user wish to send a power +policy down to the host application. These parameters are as follows: + + .. code-block:: console + + --vm-name {name of guest vm} + + This parameter allows the user to change the Virtual Machine name passed down to the + host application via the power policy. The default is "ubuntu2" + + .. code-block:: console + + --vcpu-list {list vm cores} + + A comma-separated list of cores in the VM that the user wants the host application to + monitor. The list of cores in any vm starts at zero, and these are mapped to the + physical cores by the host application once the policy is passed down. + Valid syntax includes individial cores '2,3,4', or a range of cores '2-4', or a + combination of both '1,3,5-7' + + .. code-block:: console + + --busy-hours {list of busy hours} + + A comma-separated list of hours within which to set the core frequency to maximum. + Valid syntax includes individial hours '2,3,4', or a range of hours '2-4', or a + combination of both '1,3,5-7'. Valid hours are 0 to 23. + + .. code-block:: console + + --quiet-hours {list of quiet hours} + + A comma-separated list of hours within which to set the core frequency to minimum. + Valid syntax includes individial hours '2,3,4', or a range of hours '2-4', or a + combination of both '1,3,5-7'. Valid hours are 0 to 23. + + .. code-block:: console + + --policy {policy type} + + The type of policy. This can be one of the following values: + TRAFFIC - based on incoming traffic rates on the NIC. + TIME - busy/quiet hours policy. + BRANCH_RATIO - uses branch ratio counters to determine core busyness. + Not all parameters are needed for all policy types. For example, BRANCH_RATIO + only needs the vcpu-list parameter, not any of the hours. After successful initialization the user is presented with VM Power Manager Guest CLI: @@ -333,3 +451,20 @@ Where {core_num} is the lcore and channel to change frequency by scaling up/down .. code-block:: console set_cpu_freq {core_num} up|down|min|max + +To start the application and configure the power policy, and send it to the host: + +.. code-block:: console + + ./build/guest_vm_power_mgr -l 0-3 -n 4 -- --vm-name=ubuntu --policy=BRANCH_RATIO --vcpu-list=2-4 + +Once the VM Power Manager Guest CLI appears, issuing the 'send_policy now' command +will send the policy to the host: + +.. code-block:: console + + send_policy now + +Once the policy is sent to the host, the host application takes over the power monitoring +of the specified cores in the policy. + diff --git a/doc/guides/sample_app_ug/vmdq_dcb_forwarding.rst b/doc/guides/sample_app_ug/vmdq_dcb_forwarding.rst index 83fcdf63..0e9da970 100644 --- a/doc/guides/sample_app_ug/vmdq_dcb_forwarding.rst +++ b/doc/guides/sample_app_ug/vmdq_dcb_forwarding.rst @@ -102,10 +102,6 @@ a default structure is provided for VMDQ and DCB configuration to be filled in l .rxmode = { .mq_mode = ETH_MQ_RX_VMDQ_DCB, .split_hdr_size = 0, - .header_split = 0, /**< Header Split disabled */ - .hw_ip_checksum = 0, /**< IP checksum offload disabled */ - .hw_vlan_filter = 0, /**< VLAN filtering disabled */ - .jumbo_frame = 0, /**< Jumbo Frame Support disabled */ }, .txmode = { .mq_mode = ETH_MQ_TX_VMDQ_DCB, |
