From a9e3e99916fbf99e6c3f21be970b2699fb5f5320 Mon Sep 17 00:00:00 2001 From: Kumar Sanghvi Date: Wed, 4 Apr 2018 09:23:35 +0530 Subject: [PATCH] doc: add VF in CXGBE guide Add documentation on running DPDK on SR-IOV virtual functions for Chelsio NICs. Signed-off-by: Kumar Sanghvi Signed-off-by: Rahul Lakkireddy --- doc/guides/nics/cxgbe.rst | 127 ++++++++++++++++++++++++++- doc/guides/nics/features/cxgbevf.ini | 1 + 2 files changed, 127 insertions(+), 1 deletion(-) diff --git a/doc/guides/nics/cxgbe.rst b/doc/guides/nics/cxgbe.rst index f2e2099014..a4a7c944ac 100644 --- a/doc/guides/nics/cxgbe.rst +++ b/doc/guides/nics/cxgbe.rst @@ -9,13 +9,16 @@ The CXGBE PMD (**librte_pmd_cxgbe**) provides poll mode driver support for **Chelsio Terminator** 10/25/40/100 Gbps family of adapters. CXGBE PMD has support for the latest Linux and FreeBSD operating systems. +CXGBEVF PMD provides poll mode driver support for SR-IOV Virtual functions +and has support for the latest Linux operating systems. + More information can be found at `Chelsio Communications Official Website `_. Features -------- -CXGBE PMD has support for: +CXGBE and CXGBEVF PMD has support for: - Multiple queues for TX and RX - Receiver Side Steering (RSS) @@ -39,6 +42,8 @@ port. For this reason, one cannot whitelist/blacklist a single port without whitelisting/blacklisting the other ports on the same device. +.. _t5-nics: + Supported Chelsio T5 NICs ------------------------- @@ -47,12 +52,20 @@ Supported Chelsio T5 NICs - 40G NICs: T580-CR, T580-LP-CR, T580-SO-CR - Other T5 NICs: T522-CR +.. _t6-nics: + Supported Chelsio T6 NICs ------------------------- - 25G NICs: T6425-CR, T6225-CR, T6225-LL-CR, T6225-SO-CR - 100G NICs: T62100-CR, T62100-LP-CR, T62100-SO-CR +Supported SR-IOV Chelsio NICs +----------------------------- + +SR-IOV virtual functions are supported on all the Chelsio NICs listed +in :ref:`t5-nics` and :ref:`t6-nics`. + Prerequisites ------------- @@ -86,6 +99,10 @@ enabling debugging options may affect system performance. Toggle compilation of librte_pmd_cxgbe driver. + .. note:: + + This controls compilation of both CXGBE and CXGBEVF PMD. + - ``CONFIG_RTE_LIBRTE_CXGBE_DEBUG`` (default **n**) Toggle display of generic debugging messages. @@ -262,6 +279,114 @@ devices managed by librte_pmd_cxgbe in Linux operating system. Flow control pause TX/RX is disabled by default and can be enabled via testpmd. Refer section :ref:`flow-control` for more details. +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 ` + 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> + FreeBSD ------- diff --git a/doc/guides/nics/features/cxgbevf.ini b/doc/guides/nics/features/cxgbevf.ini index 7706106d19..b41fc36551 100644 --- a/doc/guides/nics/features/cxgbevf.ini +++ b/doc/guides/nics/features/cxgbevf.ini @@ -26,3 +26,4 @@ Linux UIO = Y Linux VFIO = Y x86-32 = Y x86-64 = Y +Usage doc = Y -- 2.20.1