X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Fnics%2Focteontx.rst;h=c8655bf375b7ead7127122a6460cbc5321b8b06b;hb=82c4fb852e4287a7e6ff529d333648e52f40d451;hp=90bb9e5dbed75426786efbc8a98a478cf48037b0;hpb=4e8c3c554f472a1a5082e2873fda2975816a52de;p=dpdk.git diff --git a/doc/guides/nics/octeontx.rst b/doc/guides/nics/octeontx.rst index 90bb9e5dbe..c8655bf375 100644 --- a/doc/guides/nics/octeontx.rst +++ b/doc/guides/nics/octeontx.rst @@ -1,38 +1,11 @@ -.. BSD LICENSE - Copyright (C) Cavium, Inc. 2017. - 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 Cavium, Inc 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. - -OCTEONTX Poll Mode driver -========================= - -The OCTEONTX ETHDEV PMD (**librte_pmd_octeontx**) provides poll mode ethdev -driver support for the inbuilt network device found in the **Cavium OCTEONTX** +.. SPDX-License-Identifier: BSD-3-Clause + Copyright(c) 2017 Cavium, Inc + +OCTEON TX Poll Mode driver +========================== + +The OCTEON TX ETHDEV PMD (**librte_pmd_octeontx**) provides poll mode ethdev +driver support for the inbuilt network device found in the **Cavium OCTEON TX** SoC family as well as their virtual functions (VF) in SR-IOV context. More information can be found at `Cavium, Inc Official Website @@ -41,20 +14,23 @@ More information can be found at `Cavium, Inc Official Website Features -------- -Features of the OCTEONTX Ethdev PMD are: +Features of the OCTEON TX Ethdev PMD are: - Packet type information - Promiscuous mode - Port hardware statistics - Jumbo frames +- Scatter-Gather IO support - Link state information +- MAC/VLAN filtering +- MTU update - SR-IOV VF - Multiple queues for TX - Lock-free Tx queue - HW offloaded `ethdev Rx queue` to `eventdev event queue` packet injection -Supported OCTEONTX SoCs ------------------------ +Supported OCTEON TX SoCs +------------------------ - CN83xx @@ -86,40 +62,19 @@ Please note that enabling debugging options may affect system performance. Toggle compilation of the ``librte_pmd_octeontx`` driver. -- ``CONFIG_RTE_LIBRTE_OCTEONTX_DEBUG_DRIVER`` (default ``n``) - - Toggle display of generic debugging messages - -- ``CONFIG_RTE_LIBRTE_OCTEONTX_DEBUG_INIT`` (default ``n``) - - Toggle display of initialization related messages. - -- ``CONFIG_RTE_LIBRTE_OCTEONTX_DEBUG_RX`` (default ``n``) - - Toggle display of receive path message - -- ``CONFIG_RTE_LIBRTE_OCTEONTX_DEBUG_TX`` (default ``n``) - - Toggle display of transmit path message - -- ``CONFIG_RTE_LIBRTE_OCTEONTX_DEBUG_MBOX`` (default ``n``) - - Toggle display of mbox related message - - Driver compilation and testing ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Refer to the document :ref:`compiling and testing a PMD for a NIC ` for details. -To compile the OCTEONTX PMD for Linux arm64 gcc target, run the +To compile the OCTEON TX PMD for Linux arm64 gcc target, run the following ``make`` command: .. code-block:: console cd - make config T=arm64-thunderx-linuxapp-gcc install + make config T=arm64-thunderx-linux-gcc install #. Running testpmd: @@ -131,13 +86,13 @@ following ``make`` command: .. code-block:: console - ./arm64-thunderx-linuxapp-gcc/app/testpmd -c 700 \ + ./arm64-thunderx-linux-gcc/app/testpmd -c 700 \ --base-virtaddr=0x100000000000 \ --mbuf-pool-ops-name="octeontx_fpavf" \ --vdev='event_octeontx' \ --vdev='eth_octeontx,nr_port=2' \ - -- --rxq=1 --txq=1 --nb-core=2 --total-num-mbufs=16384 \ - --disable-hw-vlan-filter -i + -- --rxq=1 --txq=1 --nb-core=2 \ + --total-num-mbufs=16384 -i ..... EAL: Detected 24 lcore(s) EAL: Probing VFIO support... @@ -170,7 +125,7 @@ following ``make`` command: Initialization -------------- -The octeontx ethdev pmd is exposed as a vdev device which consists of a set +The OCTEON TX ethdev pmd is exposed as a vdev device which consists of a set of PKI and PKO PCIe VF devices. On EAL initialization, PKI/PKO PCIe VF devices will be probed and then the vdev device can be created from the application code, or from the EAL command line based on @@ -204,22 +159,28 @@ Limitations ``octeontx_fpavf`` external mempool handler dependency ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -The OCTEONTX SoC family NIC has inbuilt HW assisted external mempool manager. +The OCTEON TX SoC family NIC has inbuilt HW assisted external mempool manager. This driver will only work with ``octeontx_fpavf`` external mempool handler as it is the most performance effective way for packet allocation and Tx buffer -recycling on OCTEONTX SoC platform. +recycling on OCTEON TX SoC platform. -CRC striping -~~~~~~~~~~~~ +CRC stripping +~~~~~~~~~~~~~ -The OCTEONTX SoC family NICs strip the CRC for every packets coming into the -host interface. So, CRC will be stripped even when the -``rxmode.hw_strip_crc`` member is set to 0 in ``struct rte_eth_conf``. +The OCTEON TX SoC family NICs strip the CRC for every packets coming into the +host interface irrespective of the offload configuration. Maximum packet length ~~~~~~~~~~~~~~~~~~~~~ -The OCTEONTX SoC family NICs support a maximum of a 32K jumbo frame. The value +The OCTEON TX SoC family NICs support a maximum of a 32K jumbo frame. The value is fixed and cannot be changed. So, even when the ``rxmode.max_rx_pkt_len`` member of ``struct rte_eth_conf`` is set to a value lower than 32k, frames up to 32k bytes can still reach the host interface. + +Maximum mempool size +~~~~~~~~~~~~~~~~~~~~ + +The maximum mempool size supplied to Rx queue setup should be less than 128K. +When running testpmd on OCTEON TX the application can limit the number of mbufs +by using the option ``--total-num-mbufs=131072``.