======================
The CXGBE PMD (**librte_pmd_cxgbe**) provides poll mode driver support
-for **Chelsio T5** 10/40 Gbps family of adapters.
+for **Chelsio T5** 10/40 Gbps family of adapters. CXGBE PMD has support
+for the latest Linux and FreeBSD operating systems.
-More information can be found at `Chelsio Communications
+More information can be found at `Chelsio Communications Official Website
<http://www.chelsio.com>`_.
Features
--------
-CXGBE PMD has the support for:
+CXGBE PMD has support for:
-- Multiple queues for TX and RX.
-- Receiver Side Steering (RSS).
-- VLAN filtering.
-- Checksum offload.
-- Promiscuous mode.
-- All multicast mode.
-- Port hardware statistics.
+- Multiple queues for TX and RX
+- Receiver Side Steering (RSS)
+- VLAN filtering
+- Checksum offload
+- Promiscuous mode
+- All multicast mode
+- Port hardware statistics
+- Jumbo frames
Limitations
-----------
address, thus, librte_pmd_cxgbe registers itself as a
PCI driver that allocates one Ethernet device per detected port.
-For this reason, one cannot white/blacklist a single port without also
-white/blacklisting the others on the same device.
+For this reason, one cannot whitelist/blacklist a single port without
+whitelisting/blacklisting the other ports on the same device.
-Configuration
+Supported Chelsio T5 NICs
+-------------------------
+
+- 1G NICs: T502-BT
+- 10G NICs: T520-BT, T520-CR, T520-LL-CR, T520-SO-CR, T540-CR
+- 40G NICs: T580-CR, T580-LP-CR, T580-SO-CR
+- Other T5 NICs: T522-CR
+
+Prerequisites
-------------
-Compiling CXGBE PMD
+- Requires firmware version **1.13.32.0** and higher. Visit
+ `Chelsio Download Center <http://service.chelsio.com>`_ to get latest firmware
+ bundled with the latest Chelsio Unified Wire package.
+
+ For Linux, installing and loading the latest cxgb4 kernel driver from the
+ Chelsio Unified Wire package should get you the latest firmware. More
+ information can be obtained from the User Guide that is bundled with the
+ Chelsio Unified Wire package.
+
+ For FreeBSD, the latest firmware obtained from the Chelsio Unified Wire
+ package must be manually flashed via cxgbetool available in FreeBSD source
+ repository.
+
+ Instructions on how to manually flash the firmware are given in section
+ :ref:`linux-installation` for Linux and section :ref:`freebsd-installation`
+ for FreeBSD.
+
+Pre-Installation Configuration
+------------------------------
+
+Config File Options
~~~~~~~~~~~~~~~~~~~
-These options can be modified in the ``.config`` file.
+The following options can be modified in the ``.config`` file. Please note that
+enabling debugging options may affect system performance.
- ``CONFIG_RTE_LIBRTE_CXGBE_PMD`` (default **y**)
- ``CONFIG_RTE_LIBRTE_CXGBE_DEBUG`` (default **n**)
- Toggle debugging code. Enabling this option adds additional generic debugging
- messages at the cost of lower performance.
+ Toggle display of generic debugging messages.
- ``CONFIG_RTE_LIBRTE_CXGBE_DEBUG_REG`` (default **n**)
- Toggle debugging code. Enabling this option adds additional registers related
- run-time checks and debugging messages at the cost of lower performance.
+ Toggle display of registers related run-time check messages.
- ``CONFIG_RTE_LIBRTE_CXGBE_DEBUG_MBOX`` (default **n**)
- Toggle debugging code. Enabling this option adds additional firmware mailbox
- related run-time checks and debugging messages at the cost of lower
- performance.
+ Toggle display of firmware mailbox related run-time check messages.
- ``CONFIG_RTE_LIBRTE_CXGBE_DEBUG_TX`` (default **n**)
- Toggle debugging code. Enabling this option adds additional transmission data
- path run-time checks and debugging messages at the cost of lower performance.
+ Toggle display of transmission data path run-time check messages.
- ``CONFIG_RTE_LIBRTE_CXGBE_DEBUG_RX`` (default **n**)
- Toggle debugging code. Enabling this option adds additional receiving data
- path run-time checks and debugging messages at the cost of lower performance.
+ Toggle display of receiving data path run-time check messages.
-Prerequisites
--------------
+.. _driver-compilation:
-- Requires firmware version **1.13.32.0** and higher. Visit
- `Chelsio Communications <http://www.chelsio.com>`_ to get latest firmware.
+Driver Compilation
+~~~~~~~~~~~~~~~~~~
-Sample Application Notes
--------------------------
+To compile CXGBE PMD for Linux x86_64 gcc target, run the following "make"
+command:
+
+.. code-block:: console
+
+ cd <DPDK-source-directory>
+ make config T=x86_64-native-linuxapp-gcc install
+
+To compile CXGBE PMD for FreeBSD x86_64 clang target, run the following "gmake"
+command:
+
+.. code-block:: console
+
+ cd <DPDK-source-directory>
+ gmake config T=x86_64-native-bsdapp-clang install
+
+Linux
+-----
+
+.. _linux-installation:
+
+Linux Installation
+~~~~~~~~~~~~~~~~~~
+
+Steps to manually install the latest firmware from the downloaded Chelsio
+Unified Wire package for Linux operating system are as follows:
+
+#. Load the kernel module:
+
+ .. code-block:: console
+
+ modprobe cxgb4
+
+#. Use ifconfig to get the interface name assigned to Chelsio card:
+
+ .. code-block:: console
+
+ ifconfig -a | grep "00:07:43"
+
+ Example output:
+
+ .. code-block:: console
+
+ p1p1 Link encap:Ethernet HWaddr 00:07:43:2D:EA:C0
+ p1p2 Link encap:Ethernet HWaddr 00:07:43:2D:EA:C8
+
+#. Install cxgbtool:
+
+ .. code-block:: console
+
+ cd <path_to_uwire>/tools/cxgbtool
+ make install
+
+#. Use cxgbtool to load the firmware config file onto the card:
+
+ .. code-block:: console
+
+ cxgbtool p1p1 loadcfg <path_to_uwire>/src/network/firmware/t5-config.txt
+
+#. Use cxgbtool to load the firmware image onto the card:
+
+ .. code-block:: console
+
+ cxgbtool p1p1 loadfw <path_to_uwire>/src/network/firmware/t5fw-*.bin
+
+#. Unload and reload the kernel module:
+
+ .. code-block:: console
+
+ modprobe -r cxgb4
+ modprobe cxgb4
+
+#. Verify with ethtool:
+
+ .. code-block:: console
+
+ ethtool -i p1p1 | grep "firmware"
+
+ Example output:
+
+ .. code-block:: console
+
+ firmware-version: 1.13.32.0, TP 0.1.4.8
+
+Running testpmd
+~~~~~~~~~~~~~~~
This section demonstrates how to launch **testpmd** with Chelsio T5
-devices managed by librte_pmd_cxgbe.
+devices managed by librte_pmd_cxgbe in Linux operating system.
+
+#. Change to DPDK source directory where the target has been compiled in
+ section :ref:`driver-compilation`:
+
+ .. code-block:: console
+
+ cd <DPDK-source-directory>
#. Load the kernel module:
echo 1024 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages/nr_hugepages
+#. Mount huge pages:
+
+ .. code-block:: console
+
+ mkdir /mnt/huge
+ mount -t hugetlbfs nodev /mnt/huge
+
#. Load igb_uio or vfio-pci driver:
.. code-block:: console
./tools/dpdk_nic_bind.py --bind vfio-pci 0000:02:00.4
+ .. note::
+
+ Currently, CXGBE PMD only supports the binding of PF4 for Chelsio T5 NICs.
+
#. Start testpmd with basic parameters:
.. code-block:: console
EAL: PCI memory mapped at 0x7fd7c0200000
EAL: PCI memory mapped at 0x7fd77cdfd000
EAL: PCI memory mapped at 0x7fd7c10b7000
- PMD: rte_cxgbe_pmd: fw: 1.13.33.0, TP: 0.1.4.8
+ PMD: rte_cxgbe_pmd: fw: 1.13.32.0, TP: 0.1.4.8
+ 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.
+
+FreeBSD
+-------
+
+.. _freebsd-installation:
+
+FreeBSD Installation
+~~~~~~~~~~~~~~~~~~~~
+
+Steps to manually install the latest firmware from the downloaded Chelsio
+Unified Wire package for FreeBSD operating system are as follows:
+
+#. Load the kernel module:
+
+ .. code-block:: console
+
+ kldload if_cxgbe
+
+#. Use dmesg to get the t5nex instance assigned to the Chelsio card:
+
+ .. code-block:: console
+
+ dmesg | grep "t5nex"
+
+ Example output:
+
+ .. code-block:: console
+
+ t5nex0: <Chelsio T520-CR> irq 16 at device 0.4 on pci2
+ cxl0: <port 0> on t5nex0
+ cxl1: <port 1> on t5nex0
+ t5nex0: PCIe x8, 2 ports, 14 MSI-X interrupts, 31 eq, 13 iq
+
+ In the example above, a Chelsio T520-CR card is bound to a t5nex0 instance.
+
+#. Install cxgbetool from FreeBSD source repository:
+
+ .. code-block:: console
+
+ cd <path_to_FreeBSD_source>/tools/tools/cxgbetool/
+ make && make install
+
+#. Use cxgbetool to load the firmware image onto the card:
+
+ .. code-block:: console
+
+ cxgbetool t5nex0 loadfw <path_to_uwire>/src/network/firmware/t5fw-*.bin
+
+#. Unload and reload the kernel module:
+
+ .. code-block:: console
+
+ kldunload if_cxgbe
+ kldload if_cxgbe
+
+#. Verify with sysctl:
+
+ .. code-block:: console
+
+ sysctl -a | grep "t5nex" | grep "firmware"
+
+ Example output:
+
+ .. code-block:: console
+
+ dev.t5nex.0.firmware_version: 1.13.32.0
+
+Running testpmd
+~~~~~~~~~~~~~~~
+
+This section demonstrates how to launch **testpmd** with Chelsio T5
+devices managed by librte_pmd_cxgbe in FreeBSD operating system.
+
+#. Change to DPDK source directory where the target has been compiled in
+ section :ref:`driver-compilation`:
+
+ .. code-block:: console
+
+ cd <DPDK-source-directory>
+
+#. Copy the contigmem kernel module to /boot/kernel directory:
+
+ .. code-block:: console
+
+ cp x86_64-native-bsdapp-clang/kmod/contigmem.ko /boot/kernel/
+
+#. Add the following lines to /boot/loader.conf:
+
+ .. code-block:: console
+
+ # reserve 2 x 1G blocks of contiguous memory using contigmem driver
+ hw.contigmem.num_buffers=2
+ hw.contigmem.buffer_size=1073741824
+ # load contigmem module during boot process
+ contigmem_load="YES"
+
+ The above lines load the contigmem kernel module during boot process and
+ allocate 2 x 1G blocks of contiguous memory to be used for DPDK later on.
+ This is to avoid issues with potential memory fragmentation during later
+ system up time, which may result in failure of allocating the contiguous
+ memory required for the contigmem kernel module.
+
+#. Restart the system and ensure the contigmem module is loaded successfully:
+
+ .. code-block:: console
+
+ reboot
+ kldstat | grep "contigmem"
+
+ Example output:
+
+ .. code-block:: console
+
+ 2 1 0xffffffff817f1000 3118 contigmem.ko
+
+#. Repeat step 1 to ensure that you are in the DPDK source directory.
+
+#. Load the cxgbe kernel module:
+
+ .. code-block:: console
+
+ kldload if_cxgbe
+
+#. Get the PCI bus addresses of the interfaces bound to t5nex driver:
+
+ .. code-block:: console
+
+ pciconf -l | grep "t5nex"
+
+ Example output:
+
+ .. code-block:: console
+
+ t5nex0@pci0:2:0:4: class=0x020000 card=0x00001425 chip=0x54011425 rev=0x00
+
+ In the above example, the t5nex0 is bound to 2:0:4 bus address.
+
+ .. note::
+
+ Both the interfaces of a Chelsio T5 2-port adapter are bound to the
+ same PCI bus address.
+
+#. Unload the kernel module:
+
+ .. code-block:: console
+
+ kldunload if_cxgbe
+
+#. Set the PCI bus addresses to hw.nic_uio.bdfs kernel environment parameter:
+
+ .. code-block:: console
+
+ kenv hw.nic_uio.bdfs="2:0:4"
+
+ This automatically binds 2:0:4 to nic_uio kernel driver when it is loaded in
+ the next step.
+
+ .. note::
+
+ Currently, CXGBE PMD only supports the binding of PF4 for Chelsio T5 NICs.
+
+#. Load nic_uio kernel driver:
+
+ .. code-block:: console
+
+ kldload ./x86_64-native-bsdapp-clang/kmod/nic_uio.ko
+
+#. Start testpmd with basic parameters:
+
+ .. code-block:: console
+
+ ./x86_64-native-bsdapp-clang/app/testpmd -c 0xf -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: 1.13.32.0, TP: 0.1.4.8
PMD: rte_cxgbe_pmd: Coming up as MASTER: Initializing adapter
Interactive-mode selected
Configuring Port 0 (socket 0)
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
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