-.. 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_net_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
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
Pre-Installation Configuration
------------------------------
-Config File Options
-~~~~~~~~~~~~~~~~~~~
-
-The following options can be modified in the ``config`` file.
-Please note that enabling debugging options may affect system performance.
-
-- ``CONFIG_RTE_LIBRTE_OCTEONTX_PMD`` (default ``y``)
-
- 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 <pmd_build_and_test>`
for details.
-To compile the OCTEONTX PMD for Linux arm64 gcc target, run the
-following ``make`` command:
-
-.. code-block:: console
-
- cd <DPDK-source-directory>
- make config T=arm64-thunderx-linuxapp-gcc install
-
#. Running testpmd:
Follow instructions available in the document
.. code-block:: console
- ./arm64-thunderx-linuxapp-gcc/app/testpmd -c 700 \
+ ./<build_dir>/app/dpdk-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...
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
``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
-is fixed and cannot be changed. So, even when the ``rxmode.max_rx_pkt_len``
+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.mtu``
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``.
git.droids-corp.org / dpdk.git / blobdiff