From 809f08006d56e7ba4ce190b0a63d44acf62d8044 Mon Sep 17 00:00:00 2001 From: Christian Ehrhardt Date: Wed, 6 Jul 2016 09:22:35 +0200 Subject: Imported Upstream version 16.07-rc1 Change-Id: If3f757dc95532706b04053286c6b54492169f1a3 Signed-off-by: Christian Ehrhardt --- doc/guides/sample_app_ug/pdump.rst | 122 +++++++++++++++++++++++++++++++++++++ 1 file changed, 122 insertions(+) create mode 100644 doc/guides/sample_app_ug/pdump.rst (limited to 'doc/guides/sample_app_ug/pdump.rst') diff --git a/doc/guides/sample_app_ug/pdump.rst b/doc/guides/sample_app_ug/pdump.rst new file mode 100644 index 00000000..96c8709e --- /dev/null +++ b/doc/guides/sample_app_ug/pdump.rst @@ -0,0 +1,122 @@ + +.. BSD LICENSE + Copyright(c) 2016 Intel Corporation. All rights reserved. + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + * Neither the name of Intel Corporation nor the names of its + contributors may be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + +dpdk_pdump Application +====================== + +The ``dpdk_pdump`` application is a Data Plane Development Kit (DPDK) application that runs as a DPDK secondary process and +is capable of enabling packet capture on dpdk ports. + + +Running the Application +----------------------- + +The application has a ``--pdump`` command line option with various sub arguments: + +.. code-block:: console + + ./build/app/dpdk_pdump -- + --pdump '(port= | device_id=), + (queue=), + (rx-dev= | + tx-dev=), + [ring-size=], + [mbuf-size=], + [total-num-mbufs=]' + +Note: + +* Parameters inside the parentheses represents mandatory parameters. + +* Parameters inside the square brackets represents optional parameters. + +Multiple instances of ``--pdump`` can be passed to capture packets on different port and queue combinations. + + +Parameters +~~~~~~~~~~ + +``port``: +Port id of the eth device on which packets should be captured. + +``device_id``: +PCI address (or) name of the eth device on which packets should be captured. + + .. Note:: + + * As of now the ``dpdk_pdump`` tool cannot capture the packets of virtual devices + in the primary process due to a bug in the ethdev library. Due to this bug, in a multi process context, + when the primary and secondary have different ports set, then the secondary process + (here the ``dpdk_pdump`` tool) overwrites the ``rte_eth_devices[]`` entries of the primary process. + +``queue``: +Queue id of the eth device on which packets should be captured. The user can pass a queue value of ``*`` to enable +packet capture on all queues of the eth device. + +``rx-dev``: +Can be either a pcap file name or any Linux iface. + +``tx-dev``: +Can be either a pcap file name or any Linux iface. + + .. Note:: + + * To receive ingress packets only, ``rx-dev`` should be passed. + + * To receive egress packets only, ``tx-dev`` should be passed. + + * To receive ingress and egress packets separately ``rx-dev`` and ``tx-dev`` + should both be passed with the different file names or the Linux iface names. + + * To receive ingress and egress packets separately ``rx-dev`` and ``tx-dev`` + should both be passed with the same file names or the the Linux iface names. + +``ring-size``: +Size of the ring. This value is used internally for ring creation. The ring will be used to enqueue the packets from +the primary application to the secondary. This is an optional parameter with default size 16384. + +``mbuf-size``: +Size of the mbuf data. This is used internally for mempool creation. Ideally this value must be same as +the primary application's mempool's mbuf data size which is used for packet RX. This is an optional parameter with +default size 2176. + +``total-num-mbufs``: +Total number mbufs in mempool. This is used internally for mempool creation. This is an optional parameter with default +value 65535. + + +Example +------- + +.. code-block:: console + + $ sudo ./build/app/dpdk_pdump -- --pdump 'port=0,queue=*,rx-dev=/tmp/rx.pcap' -- cgit 1.2.3-korg