f5b3c7b293
Add force_link_up devargs to always force link as up for VFs.
This enables VFs on the same NIC to send traffic to each other
even when physical link is down.
Also add RTE_PMD_REGISTER_PARAM_STRING to export all supported
devargs.
Fixes: 011ebc236d ("net/cxgbe: add skeleton VF driver")
Signed-off-by: Shagun Agrawal <shaguna@chelsio.com>
Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
660 lines
17 KiB
ReStructuredText
660 lines
17 KiB
ReStructuredText
.. SPDX-License-Identifier: BSD-3-Clause
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Copyright(c) 2014-2018 Chelsio Communications.
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All rights reserved.
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CXGBE Poll Mode Driver
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======================
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The CXGBE PMD (**librte_pmd_cxgbe**) provides poll mode driver support
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for **Chelsio Terminator** 10/25/40/100 Gbps family of adapters. CXGBE PMD
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has support for the latest Linux and FreeBSD operating systems.
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CXGBEVF PMD provides poll mode driver support for SR-IOV Virtual functions
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and has support for the latest Linux operating systems.
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More information can be found at `Chelsio Communications Official Website
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<http://www.chelsio.com>`_.
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Features
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--------
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CXGBE and CXGBEVF PMD has support for:
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- Multiple queues for TX and RX
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- Receiver Side Steering (RSS)
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Receiver Side Steering (RSS) on IPv4, IPv6, IPv4-TCP/UDP, IPv6-TCP/UDP.
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For 4-tuple, enabling 'RSS on TCP' and 'RSS on TCP + UDP' is supported.
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- VLAN filtering
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- Checksum offload
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- Promiscuous mode
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- All multicast mode
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- Port hardware statistics
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- Jumbo frames
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Limitations
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-----------
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The Chelsio Terminator series of devices provide two/four ports but
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expose a single PCI bus address, thus, librte_pmd_cxgbe registers
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itself as a PCI driver that allocates one Ethernet device per detected
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port.
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For this reason, one cannot whitelist/blacklist a single port without
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whitelisting/blacklisting the other ports on the same device.
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.. _t5-nics:
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Supported Chelsio T5 NICs
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-------------------------
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- 1G NICs: T502-BT
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- 10G NICs: T520-BT, T520-CR, T520-LL-CR, T520-SO-CR, T540-CR
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- 40G NICs: T580-CR, T580-LP-CR, T580-SO-CR
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- Other T5 NICs: T522-CR
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.. _t6-nics:
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Supported Chelsio T6 NICs
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-------------------------
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- 25G NICs: T6425-CR, T6225-CR, T6225-LL-CR, T6225-SO-CR
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- 100G NICs: T62100-CR, T62100-LP-CR, T62100-SO-CR
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Supported SR-IOV Chelsio NICs
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-----------------------------
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SR-IOV virtual functions are supported on all the Chelsio NICs listed
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in :ref:`t5-nics` and :ref:`t6-nics`.
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Prerequisites
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-------------
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- Requires firmware version **1.17.14.0** and higher. Visit
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`Chelsio Download Center <http://service.chelsio.com>`_ to get latest firmware
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bundled with the latest Chelsio Unified Wire package.
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For Linux, installing and loading the latest cxgb4 kernel driver from the
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Chelsio Unified Wire package should get you the latest firmware. More
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information can be obtained from the User Guide that is bundled with the
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Chelsio Unified Wire package.
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For FreeBSD, the latest firmware obtained from the Chelsio Unified Wire
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package must be manually flashed via cxgbetool available in FreeBSD source
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repository.
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Instructions on how to manually flash the firmware are given in section
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:ref:`linux-installation` for Linux and section :ref:`freebsd-installation`
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for FreeBSD.
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Pre-Installation Configuration
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------------------------------
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Config File Options
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~~~~~~~~~~~~~~~~~~~
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The following options can be modified in the ``.config`` file. Please note that
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enabling debugging options may affect system performance.
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- ``CONFIG_RTE_LIBRTE_CXGBE_PMD`` (default **y**)
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Toggle compilation of librte_pmd_cxgbe driver.
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.. note::
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This controls compilation of both CXGBE and CXGBEVF PMD.
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- ``CONFIG_RTE_LIBRTE_CXGBE_DEBUG`` (default **n**)
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Toggle display of generic debugging messages.
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- ``CONFIG_RTE_LIBRTE_CXGBE_DEBUG_REG`` (default **n**)
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Toggle display of registers related run-time check messages.
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- ``CONFIG_RTE_LIBRTE_CXGBE_DEBUG_MBOX`` (default **n**)
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Toggle display of firmware mailbox related run-time check messages.
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- ``CONFIG_RTE_LIBRTE_CXGBE_DEBUG_TX`` (default **n**)
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Toggle display of transmission data path run-time check messages.
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- ``CONFIG_RTE_LIBRTE_CXGBE_DEBUG_RX`` (default **n**)
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Toggle display of receiving data path run-time check messages.
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- ``CONFIG_RTE_LIBRTE_CXGBE_TPUT`` (default **y**)
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Toggle behaviour to prefer Throughput or Latency.
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Runtime Options
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~~~~~~~~~~~~~~~
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The following ``devargs`` options can be enabled at runtime. They must
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be passed as part of EAL arguments. For example,
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.. code-block:: console
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testpmd -w 02:00.4,keep_ovlan=1 -- -i
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- ``keep_ovlan`` (default **0**)
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Toggle behaviour to keep/strip outer VLAN in Q-in-Q packets. If
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enabled, the outer VLAN tag is preserved in Q-in-Q packets. Otherwise,
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the outer VLAN tag is stripped in Q-in-Q packets.
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- ``force_link_up`` (default **0**)
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When set to 1, CXGBEVF PMD always forces link as up for all VFs on
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underlying Chelsio NICs. This enables multiple VFs on the same NIC
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to send traffic to each other even when the physical link is down.
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.. _driver-compilation:
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Driver compilation and testing
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------------------------------
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Refer to the document :ref:`compiling and testing a PMD for a NIC <pmd_build_and_test>`
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for details.
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Linux
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-----
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.. _linux-installation:
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Linux Installation
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~~~~~~~~~~~~~~~~~~
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Steps to manually install the latest firmware from the downloaded Chelsio
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Unified Wire package for Linux operating system are as follows:
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#. Load the kernel module:
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.. code-block:: console
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modprobe cxgb4
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#. Use ifconfig to get the interface name assigned to Chelsio card:
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.. code-block:: console
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ifconfig -a | grep "00:07:43"
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Example output:
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.. code-block:: console
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p1p1 Link encap:Ethernet HWaddr 00:07:43:2D:EA:C0
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p1p2 Link encap:Ethernet HWaddr 00:07:43:2D:EA:C8
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#. Install cxgbtool:
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.. code-block:: console
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cd <path_to_uwire>/tools/cxgbtool
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make install
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#. Use cxgbtool to load the firmware config file onto the card:
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.. code-block:: console
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cxgbtool p1p1 loadcfg <path_to_uwire>/src/network/firmware/t5-config.txt
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#. Use cxgbtool to load the firmware image onto the card:
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.. code-block:: console
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cxgbtool p1p1 loadfw <path_to_uwire>/src/network/firmware/t5fw-*.bin
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#. Unload and reload the kernel module:
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.. code-block:: console
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modprobe -r cxgb4
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modprobe cxgb4
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#. Verify with ethtool:
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.. code-block:: console
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ethtool -i p1p1 | grep "firmware"
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Example output:
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.. code-block:: console
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firmware-version: 1.17.14.0, TP 0.1.4.9
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Running testpmd
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~~~~~~~~~~~~~~~
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This section demonstrates how to launch **testpmd** with Chelsio
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devices managed by librte_pmd_cxgbe in Linux operating system.
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#. Load the kernel module:
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.. code-block:: console
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modprobe cxgb4
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#. Get the PCI bus addresses of the interfaces bound to cxgb4 driver:
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.. code-block:: console
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dmesg | tail -2
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Example output:
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.. code-block:: console
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cxgb4 0000:02:00.4 p1p1: renamed from eth0
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cxgb4 0000:02:00.4 p1p2: renamed from eth1
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.. note::
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Both the interfaces of a Chelsio 2-port adapter are bound to the
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same PCI bus address.
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#. Unload the kernel module:
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.. code-block:: console
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modprobe -ar cxgb4 csiostor
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#. Running testpmd
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Follow instructions available in the document
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:ref:`compiling and testing a PMD for a NIC <pmd_build_and_test>`
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to run testpmd.
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.. note::
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Currently, CXGBE PMD only supports the binding of PF4 for Chelsio NICs.
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Example output:
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.. code-block:: console
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[...]
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EAL: PCI device 0000:02:00.4 on NUMA socket -1
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EAL: probe driver: 1425:5401 rte_cxgbe_pmd
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EAL: PCI memory mapped at 0x7fd7c0200000
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EAL: PCI memory mapped at 0x7fd77cdfd000
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EAL: PCI memory mapped at 0x7fd7c10b7000
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PMD: rte_cxgbe_pmd: fw: 1.17.14.0, TP: 0.1.4.9
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PMD: rte_cxgbe_pmd: Coming up as MASTER: Initializing adapter
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Interactive-mode selected
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Configuring Port 0 (socket 0)
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Port 0: 00:07:43:2D:EA:C0
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Configuring Port 1 (socket 0)
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Port 1: 00:07:43:2D:EA:C8
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Checking link statuses...
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PMD: rte_cxgbe_pmd: Port0: passive DA port module inserted
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PMD: rte_cxgbe_pmd: Port1: passive DA port module inserted
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Port 0 Link Up - speed 10000 Mbps - full-duplex
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Port 1 Link Up - speed 10000 Mbps - full-duplex
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Done
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testpmd>
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.. note::
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Flow control pause TX/RX is disabled by default and can be enabled via
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testpmd. Refer section :ref:`flow-control` for more details.
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Configuring SR-IOV Virtual Functions
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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This section demonstrates how to enable SR-IOV virtual functions
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on Chelsio NICs and demonstrates how to run testpmd with SR-IOV
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virtual functions.
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#. Load the kernel module:
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.. code-block:: console
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modprobe cxgb4
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#. Get the PCI bus addresses of the interfaces bound to cxgb4 driver:
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.. code-block:: console
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dmesg | tail -2
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Example output:
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.. code-block:: console
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cxgb4 0000:02:00.4 p1p1: renamed from eth0
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cxgb4 0000:02:00.4 p1p2: renamed from eth1
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.. note::
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Both the interfaces of a Chelsio 2-port adapter are bound to the
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same PCI bus address.
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#. Use ifconfig to get the interface name assigned to Chelsio card:
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.. code-block:: console
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ifconfig -a | grep "00:07:43"
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Example output:
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.. code-block:: console
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p1p1 Link encap:Ethernet HWaddr 00:07:43:2D:EA:C0
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p1p2 Link encap:Ethernet HWaddr 00:07:43:2D:EA:C8
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#. Bring up the interfaces:
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.. code-block:: console
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ifconfig p1p1 up
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ifconfig p1p2 up
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#. Instantiate SR-IOV Virtual Functions. PF0..3 can be used for
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SR-IOV VFs. Multiple VFs can be instantiated on each of PF0..3.
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To instantiate one SR-IOV VF on each PF0 and PF1:
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.. code-block:: console
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echo 1 > /sys/bus/pci/devices/0000\:02\:00.0/sriov_numvfs
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echo 1 > /sys/bus/pci/devices/0000\:02\:00.1/sriov_numvfs
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#. Get the PCI bus addresses of the virtual functions:
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.. code-block:: console
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lspci | grep -i "Chelsio" | grep -i "VF"
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Example output:
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.. code-block:: console
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02:01.0 Ethernet controller: Chelsio Communications Inc T540-CR Unified Wire Ethernet Controller [VF]
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02:01.1 Ethernet controller: Chelsio Communications Inc T540-CR Unified Wire Ethernet Controller [VF]
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#. Running testpmd
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Follow instructions available in the document
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:ref:`compiling and testing a PMD for a NIC <pmd_build_and_test>`
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to bind virtual functions and run testpmd.
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Example output:
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.. code-block:: console
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[...]
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EAL: PCI device 0000:02:01.0 on NUMA socket 0
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EAL: probe driver: 1425:5803 net_cxgbevf
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PMD: rte_cxgbe_pmd: Firmware version: 1.17.14.0
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PMD: rte_cxgbe_pmd: TP Microcode version: 0.1.4.9
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PMD: rte_cxgbe_pmd: Chelsio rev 0
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PMD: rte_cxgbe_pmd: No bootstrap loaded
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PMD: rte_cxgbe_pmd: No Expansion ROM loaded
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PMD: rte_cxgbe_pmd: 0000:02:01.0 Chelsio rev 0 1G/10GBASE-SFP
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EAL: PCI device 0000:02:01.1 on NUMA socket 0
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EAL: probe driver: 1425:5803 net_cxgbevf
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PMD: rte_cxgbe_pmd: Firmware version: 1.17.14.0
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PMD: rte_cxgbe_pmd: TP Microcode version: 0.1.4.9
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PMD: rte_cxgbe_pmd: Chelsio rev 0
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PMD: rte_cxgbe_pmd: No bootstrap loaded
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PMD: rte_cxgbe_pmd: No Expansion ROM loaded
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PMD: rte_cxgbe_pmd: 0000:02:01.1 Chelsio rev 0 1G/10GBASE-SFP
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Configuring Port 0 (socket 0)
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Port 0: 06:44:29:44:40:00
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Configuring Port 1 (socket 0)
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Port 1: 06:44:29:44:40:10
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Checking link statuses...
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Done
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testpmd>
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FreeBSD
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-------
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.. _freebsd-installation:
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FreeBSD Installation
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~~~~~~~~~~~~~~~~~~~~
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Steps to manually install the latest firmware from the downloaded Chelsio
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Unified Wire package for FreeBSD operating system are as follows:
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#. Load the kernel module:
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.. code-block:: console
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kldload if_cxgbe
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#. Use dmesg to get the t5nex instance assigned to the Chelsio card:
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.. code-block:: console
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dmesg | grep "t5nex"
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Example output:
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.. code-block:: console
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t5nex0: <Chelsio T520-CR> irq 16 at device 0.4 on pci2
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cxl0: <port 0> on t5nex0
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cxl1: <port 1> on t5nex0
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t5nex0: PCIe x8, 2 ports, 14 MSI-X interrupts, 31 eq, 13 iq
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In the example above, a Chelsio T520-CR card is bound to a t5nex0 instance.
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#. Install cxgbetool from FreeBSD source repository:
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.. code-block:: console
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cd <path_to_FreeBSD_source>/tools/tools/cxgbetool/
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make && make install
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#. Use cxgbetool to load the firmware image onto the card:
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.. code-block:: console
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cxgbetool t5nex0 loadfw <path_to_uwire>/src/network/firmware/t5fw-*.bin
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#. Unload and reload the kernel module:
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.. code-block:: console
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kldunload if_cxgbe
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kldload if_cxgbe
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#. Verify with sysctl:
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.. code-block:: console
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sysctl -a | grep "t5nex" | grep "firmware"
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Example output:
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.. code-block:: console
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dev.t5nex.0.firmware_version: 1.17.14.0
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Running testpmd
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~~~~~~~~~~~~~~~
|
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|
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This section demonstrates how to launch **testpmd** with Chelsio
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devices managed by librte_pmd_cxgbe in FreeBSD operating system.
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#. Change to DPDK source directory where the target has been compiled in
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section :ref:`driver-compilation`:
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.. code-block:: console
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cd <DPDK-source-directory>
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#. Copy the contigmem kernel module to /boot/kernel directory:
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.. code-block:: console
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cp x86_64-native-bsdapp-clang/kmod/contigmem.ko /boot/kernel/
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#. Add the following lines to /boot/loader.conf:
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.. code-block:: console
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# reserve 2 x 1G blocks of contiguous memory using contigmem driver
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hw.contigmem.num_buffers=2
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hw.contigmem.buffer_size=1073741824
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# load contigmem module during boot process
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contigmem_load="YES"
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The above lines load the contigmem kernel module during boot process and
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allocate 2 x 1G blocks of contiguous memory to be used for DPDK later on.
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This is to avoid issues with potential memory fragmentation during later
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system up time, which may result in failure of allocating the contiguous
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memory required for the contigmem kernel module.
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#. Restart the system and ensure the contigmem module is loaded successfully:
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.. code-block:: console
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reboot
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kldstat | grep "contigmem"
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Example output:
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.. code-block:: console
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2 1 0xffffffff817f1000 3118 contigmem.ko
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#. Repeat step 1 to ensure that you are in the DPDK source directory.
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#. Load the cxgbe kernel module:
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.. code-block:: console
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kldload if_cxgbe
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#. Get the PCI bus addresses of the interfaces bound to t5nex driver:
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.. code-block:: console
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pciconf -l | grep "t5nex"
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Example output:
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.. code-block:: console
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t5nex0@pci0:2:0:4: class=0x020000 card=0x00001425 chip=0x54011425 rev=0x00
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In the above example, the t5nex0 is bound to 2:0:4 bus address.
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.. note::
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|
Both the interfaces of a Chelsio 2-port adapter are bound to the
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same PCI bus address.
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|
#. Unload the kernel module:
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|
.. code-block:: console
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kldunload if_cxgbe
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#. Set the PCI bus addresses to hw.nic_uio.bdfs kernel environment parameter:
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|
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|
.. code-block:: console
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|
|
|
kenv hw.nic_uio.bdfs="2:0:4"
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|
This automatically binds 2:0:4 to nic_uio kernel driver when it is loaded in
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|
the next step.
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|
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|
.. note::
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|
|
|
Currently, CXGBE PMD only supports the binding of PF4 for Chelsio NICs.
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|
|
|
#. Load nic_uio kernel driver:
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|
|
|
.. code-block:: console
|
|
|
|
kldload ./x86_64-native-bsdapp-clang/kmod/nic_uio.ko
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|
|
|
#. Start testpmd with basic parameters:
|
|
|
|
.. code-block:: console
|
|
|
|
./x86_64-native-bsdapp-clang/app/testpmd -l 0-3 -n 4 -w 0000:02:00.4 -- -i
|
|
|
|
Example output:
|
|
|
|
.. code-block:: console
|
|
|
|
[...]
|
|
EAL: PCI device 0000:02:00.4 on NUMA socket 0
|
|
EAL: probe driver: 1425:5401 rte_cxgbe_pmd
|
|
EAL: PCI memory mapped at 0x8007ec000
|
|
EAL: PCI memory mapped at 0x842800000
|
|
EAL: PCI memory mapped at 0x80086c000
|
|
PMD: rte_cxgbe_pmd: fw: 1.17.14.0, TP: 0.1.4.9
|
|
PMD: rte_cxgbe_pmd: Coming up as MASTER: Initializing adapter
|
|
Interactive-mode selected
|
|
Configuring Port 0 (socket 0)
|
|
Port 0: 00:07:43:2D:EA:C0
|
|
Configuring Port 1 (socket 0)
|
|
Port 1: 00:07:43:2D:EA:C8
|
|
Checking link statuses...
|
|
PMD: rte_cxgbe_pmd: Port0: passive DA port module inserted
|
|
PMD: rte_cxgbe_pmd: Port1: passive DA port module inserted
|
|
Port 0 Link Up - speed 10000 Mbps - full-duplex
|
|
Port 1 Link Up - speed 10000 Mbps - full-duplex
|
|
Done
|
|
testpmd>
|
|
|
|
.. note::
|
|
|
|
Flow control pause TX/RX is disabled by default and can be enabled via
|
|
testpmd. Refer section :ref:`flow-control` for more details.
|
|
|
|
Sample Application Notes
|
|
------------------------
|
|
|
|
.. _flow-control:
|
|
|
|
Enable/Disable Flow Control
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Flow control pause TX/RX is disabled by default and can be enabled via
|
|
testpmd as follows:
|
|
|
|
.. code-block:: console
|
|
|
|
testpmd> set flow_ctrl rx on tx on 0 0 0 0 mac_ctrl_frame_fwd off autoneg on 0
|
|
testpmd> set flow_ctrl rx on tx on 0 0 0 0 mac_ctrl_frame_fwd off autoneg on 1
|
|
|
|
To disable again, run:
|
|
|
|
.. code-block:: console
|
|
|
|
testpmd> set flow_ctrl rx off tx off 0 0 0 0 mac_ctrl_frame_fwd off autoneg off 0
|
|
testpmd> set flow_ctrl rx off tx off 0 0 0 0 mac_ctrl_frame_fwd off autoneg off 1
|
|
|
|
Jumbo Mode
|
|
~~~~~~~~~~
|
|
|
|
There are two ways to enable sending and receiving of jumbo frames via testpmd.
|
|
One method involves using the **mtu** command, which changes the mtu of an
|
|
individual port without having to stop the selected port. Another method
|
|
involves stopping all the ports first and then running **max-pkt-len** command
|
|
to configure the mtu of all the ports with a single command.
|
|
|
|
- To configure each port individually, run the mtu command as follows:
|
|
|
|
.. code-block:: console
|
|
|
|
testpmd> port config mtu 0 9000
|
|
testpmd> port config mtu 1 9000
|
|
|
|
- To configure all the ports at once, stop all the ports first and run the
|
|
max-pkt-len command as follows:
|
|
|
|
.. code-block:: console
|
|
|
|
testpmd> port stop all
|
|
testpmd> port config all max-pkt-len 9000
|