+Configuring SR-IOV Virtual Functions
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This section demonstrates how to enable SR-IOV virtual functions
+on Chelsio NICs and demonstrates how to run testpmd with SR-IOV
+virtual functions.
+
+#. Load the kernel module:
+
+ .. code-block:: console
+
+ modprobe cxgb4
+
+#. Get the PCI bus addresses of the interfaces bound to cxgb4 driver:
+
+ .. code-block:: console
+
+ dmesg | tail -2
+
+ Example output:
+
+ .. code-block:: console
+
+ cxgb4 0000:02:00.4 p1p1: renamed from eth0
+ cxgb4 0000:02:00.4 p1p2: renamed from eth1
+
+ .. note::
+
+ Both the interfaces of a Chelsio 2-port adapter are bound to the
+ same PCI bus address.
+
+#. 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
+
+#. Bring up the interfaces:
+
+ .. code-block:: console
+
+ ifconfig p1p1 up
+ ifconfig p1p2 up
+
+#. Instantiate SR-IOV Virtual Functions. PF0..3 can be used for
+ SR-IOV VFs. Multiple VFs can be instantiated on each of PF0..3.
+ To instantiate one SR-IOV VF on each PF0 and PF1:
+
+ .. code-block:: console
+
+ echo 1 > /sys/bus/pci/devices/0000\:02\:00.0/sriov_numvfs
+ echo 1 > /sys/bus/pci/devices/0000\:02\:00.1/sriov_numvfs
+
+#. Get the PCI bus addresses of the virtual functions:
+
+ .. code-block:: console
+
+ lspci | grep -i "Chelsio" | grep -i "VF"
+
+ Example output:
+
+ .. code-block:: console
+
+ 02:01.0 Ethernet controller: Chelsio Communications Inc T540-CR Unified Wire Ethernet Controller [VF]
+ 02:01.1 Ethernet controller: Chelsio Communications Inc T540-CR Unified Wire Ethernet Controller [VF]
+
+#. Running testpmd
+
+ Follow instructions available in the document
+ :ref:`compiling and testing a PMD for a NIC <pmd_build_and_test>`
+ to bind virtual functions and run testpmd.
+
+ Example output:
+
+ .. code-block:: console
+
+ [...]
+ EAL: PCI device 0000:02:01.0 on NUMA socket 0
+ EAL: probe driver: 1425:5803 net_cxgbevf
+ PMD: rte_cxgbe_pmd: Firmware version: 1.17.14.0
+ PMD: rte_cxgbe_pmd: TP Microcode version: 0.1.4.9
+ PMD: rte_cxgbe_pmd: Chelsio rev 0
+ PMD: rte_cxgbe_pmd: No bootstrap loaded
+ PMD: rte_cxgbe_pmd: No Expansion ROM loaded
+ PMD: rte_cxgbe_pmd: 0000:02:01.0 Chelsio rev 0 1G/10GBASE-SFP
+ EAL: PCI device 0000:02:01.1 on NUMA socket 0
+ EAL: probe driver: 1425:5803 net_cxgbevf
+ PMD: rte_cxgbe_pmd: Firmware version: 1.17.14.0
+ PMD: rte_cxgbe_pmd: TP Microcode version: 0.1.4.9
+ PMD: rte_cxgbe_pmd: Chelsio rev 0
+ PMD: rte_cxgbe_pmd: No bootstrap loaded
+ PMD: rte_cxgbe_pmd: No Expansion ROM loaded
+ PMD: rte_cxgbe_pmd: 0000:02:01.1 Chelsio rev 0 1G/10GBASE-SFP
+ Configuring Port 0 (socket 0)
+ Port 0: 06:44:29:44:40:00
+ Configuring Port 1 (socket 0)
+ Port 1: 06:44:29:44:40:10
+ Checking link statuses...
+ Done
+ testpmd>
+