From patchwork Tue Feb 23 01:23:05 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jingjing Wu X-Patchwork-Id: 10771 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id 9BE7869A4; Tue, 23 Feb 2016 02:23:16 +0100 (CET) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id D4C13697C for ; Tue, 23 Feb 2016 02:23:14 +0100 (CET) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga101.jf.intel.com with ESMTP; 22 Feb 2016 17:23:13 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,487,1449561600"; d="scan'208";a="751287811" Received: from shvmail01.sh.intel.com ([10.239.29.42]) by orsmga003.jf.intel.com with ESMTP; 22 Feb 2016 17:23:14 -0800 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shvmail01.sh.intel.com with ESMTP id u1N1NAve011640; Tue, 23 Feb 2016 09:23:10 +0800 Received: from shecgisg004.sh.intel.com (localhost [127.0.0.1]) by shecgisg004.sh.intel.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP id u1N1N8Y1029141; Tue, 23 Feb 2016 09:23:10 +0800 Received: (from wujingji@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id u1N1N8Wo029137; Tue, 23 Feb 2016 09:23:08 +0800 From: Jingjing Wu To: dev@dpdk.org Date: Tue, 23 Feb 2016 09:23:05 +0800 Message-Id: <1456190585-29107-1-git-send-email-jingjing.wu@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1453971042-16925-1-git-send-email-jingjing.wu@intel.com> References: <1453971042-16925-1-git-send-email-jingjing.wu@intel.com> Subject: [dpdk-dev] [PATCH v2] doc: add doc for i40e pmd driver introduction X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" A new doc "i40e.rst" is added to introduce i40e pmd driver. Signed-off-by: Jingjing Wu Acked-by: John McNamara --- doc/guides/nics/i40e.rst | 368 ++++++++++++++++++++++++++++++++++++++++++++++ doc/guides/nics/index.rst | 1 + 2 files changed, 369 insertions(+) create mode 100644 doc/guides/nics/i40e.rst diff --git a/doc/guides/nics/i40e.rst b/doc/guides/nics/i40e.rst new file mode 100644 index 0000000..4019b41 --- /dev/null +++ b/doc/guides/nics/i40e.rst @@ -0,0 +1,368 @@ +.. BSD LICENSE + Copyright(c) 2016 Intel Corporation. All rights reserved. + 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 Intel Corporation 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. + +I40E Poll Mode Driver +====================== + +The I40E PMD (librte_pmd_i40e) provides poll mode driver support +for the Intel X710/XL710/X722 10/40 Gbps family of adapters. + + +Features +-------- + +Features of the I40E PMD are: + +- Multiple queues for TX and RX +- Receiver Side Scaling (RSS) +- MAC/VLAN filtering +- Packet type information +- Flow director +- Cloud filter +- Checksum offload +- VLAN/QinQ stripping and inserting +- TSO offload +- Promiscuous mode +- Multicast mode +- Port hardware statistics +- Jumbo frames +- Link state information +- Link flow control +- Mirror on port, VLAN and VSI +- Interrupt mode for RX +- Scattered and gather for TX and RX +- Vector Poll mode driver +- DCB +- VMDQ +- SR-IOV VF +- Hot plug +- IEEE1588/802.1AS timestamping + + +Prerequisites +------------- + +- Identifying your adapter using `Intel Support + `_ and get the latest NVM/FW images. + +- Follow the DPDK :ref:`Getting Started Guide for Linux ` to setup the basic DPDK environment. + +- To get better performance on Intel platforms, please follow the "How to get best performance with NICs on Intel platforms" + section of the :ref:`Getting Started Guide for Linux `. + + +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_I40E_PMD`` (default ``y``) + + Toggle compilation of the ``librte_pmd_i40e`` driver. + +- ``CONFIG_RTE_LIBRTE_I40E_DEBUG_*`` (default ``n``) + + Toggle display of generic debugging messages. + +- ``CONFIG_RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC`` (default ``y``) + + Toggle bulk allocation for RX. + +- ``CONFIG_RTE_LIBRTE_I40E_INC_VECTOR`` (default ``n``) + + Toggle the use of Vector PMD instead of normal RX/TX path. + To enable vPMD for RX, bulk allocation for Rx must be allowed. + +- ``CONFIG_RTE_LIBRTE_I40E_RX_OLFLAGS_ENABLE`` (default ``y``) + + Toggle to enable RX ``olflags``. + This is only meaningful when Vector PMD is used. + +- ``CONFIG_RTE_LIBRTE_I40E_16BYTE_RX_DESC`` (default ``n``) + + Toggle to use a 16-byte RX descriptor, by default the RX descriptor is 32 byte. + +- ``CONFIG_RTE_LIBRTE_I40E_QUEUE_NUM_PER_PF`` (default ``64``) + + Number of queues reserved for PF. + +- ``CONFIG_RTE_LIBRTE_I40E_QUEUE_NUM_PER_VF`` (default ``4``) + + Number of queues reserved for each SR-IOV VF. + +- ``CONFIG_RTE_LIBRTE_I40E_QUEUE_NUM_PER_VM`` (default ``4``) + + Number of queues reserved for each VMDQ Pool. + +- ``CONFIG_RTE_LIBRTE_I40E_ITR_INTERVAL`` (default ``-1``) + + Interrupt Throttling interval. + + +Driver Compilation +~~~~~~~~~~~~~~~~~~ + +To compile the I40E PMD see :ref:`Getting Started Guide for Linux ` or +:ref:`Getting Started Guide for FreeBSD ` depending on your platform. + + +Linux +----- + + +Running testpmd +~~~~~~~~~~~~~~~ + +This section demonstrates how to launch ``testpmd`` with Intel XL710/X710 +devices managed by ``librte_pmd_i40e`` in the Linux operating system. + +#. Load ``igb_uio`` or ``vfio-pci`` driver: + + .. code-block:: console + + modprobe uio + insmod ./x86_64-native-linuxapp-gcc/kmod/igb_uio.ko + + or + + .. code-block:: console + + modprobe vfio-pci + +#. Bind the XL710/X710 adapters to ``igb_uio`` or ``vfio-pci`` loaded in the previous step: + + .. code-block:: console + + ./tools/dpdk_nic_bind.py --bind igb_uio 0000:83:00.0 + + Or setup VFIO permissions for regular users and then bind to ``vfio-pci``: + + .. code-block:: console + + ./tools/dpdk_nic_bind.py --bind vfio-pci 0000:83:00.0 + +#. Start ``testpmd`` with basic parameters: + + .. code-block:: console + + ./x86_64-native-linuxapp-gcc/app/testpmd -c 0xf -n 4 -w 83:00.0 -- -i + + Example output: + + .. code-block:: console + + ... + EAL: PCI device 0000:83:00.0 on NUMA socket 1 + EAL: probe driver: 8086:1572 rte_i40e_pmd + EAL: PCI memory mapped at 0x7f7f80000000 + EAL: PCI memory mapped at 0x7f7f80800000 + PMD: eth_i40e_dev_init(): FW 5.0 API 1.5 NVM 05.00.02 eetrack 8000208a + Interactive-mode selected + Configuring Port 0 (socket 0) + ... + + PMD: i40e_dev_rx_queue_setup(): Rx Burst Bulk Alloc Preconditions are + satisfied.Rx Burst Bulk Alloc function will be used on port=0, queue=0. + + ... + Port 0: 68:05:CA:26:85:84 + Checking link statuses... + Port 0 Link Up - speed 10000 Mbps - full-duplex + Done + + testpmd> + + +SR-IOV: Prerequisites and sample Application Notes +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +#. Load the kernel module: + + .. code-block:: console + + modprobe i40e + + Check the output in dmesg: + + .. code-block:: console + + i40e 0000:83:00.1 ens802f0: renamed from eth0 + +#. Bring up the PF ports: + + .. code-block:: console + + ifconfig ens802f0 up + +#. Create VF device(s): + + Echo the number of VFs to be created into the ``sriov_numvfs`` sysfs entry + of the parent PF. + + Example: + + .. code-block:: console + + echo 2 > /sys/devices/pci0000:00/0000:00:03.0/0000:81:00.0/sriov_numvfs + + +#. Assign VF MAC address: + + Assign MAC address to the VF using iproute2 utility. The syntax is: + + .. code-block:: console + + ip link set vf mac + + Example: + + .. code-block:: console + + ip link set ens802f0 vf 0 mac a0:b0:c0:d0:e0:f0 + +#. Assign VF to VM, and bring up the VM. + Please see the documenation for the*I40E/IXGBE/IGB Virtual Function Driver*. + + +Sample Application Notes +------------------------ + +Vlan filter +~~~~~~~~~~~ + +Vlan filter only works when Promiscuous mode is off. + +To start ``testpmd``, and add vlan 10 to port 0: + +.. code-block:: console + + ./app/testpmd -c ffff -n 4 -- -i --forward-mode=mac + ... + + testpmd> set promisc 0 off + testpmd> rx_vlan add 10 0 + + +Flow Director +~~~~~~~~~~~~~ + +The Flow Director works in receive mode to identify specific flows or sets of flows and route them to specific queues. +The Flow Director filters can match the different fields for different type of packet: flow type, specific input set per flow type and the flexible payload. + +The default input set of each flow type is:: + + ipv4-other : src_ip_address, dst_ip_address + ipv4-frag : src_ip_address, dst_ip_address + ipv4-tcp : src_ip_address, dst_ip_address, src_port, dst_port + ipv4-udp : src_ip_address, dst_ip_address, src_port, dst_port + ipv4-sctp : src_ip_address, dst_ip_address, src_port, dst_port, + verification_tag + ipv6-other : src_ip_address, dst_ip_address + ipv6-frag : src_ip_address, dst_ip_address + ipv6-tcp : src_ip_address, dst_ip_address, src_port, dst_port + ipv6-udp : src_ip_address, dst_ip_address, src_port, dst_port + ipv6-sctp : src_ip_address, dst_ip_address, src_port, dst_port, + verification_tag + l2_payload : ether_type + +The flex payload is selected from offset 0 to 15 of packet's payload by default, while it is masked out from matching. + +Start ``testpmd`` with ``--disable-rss`` and ``--pkt-filter-mode=perfect``: + +.. code-block:: console + + ./app/testpmd -c ffff -n 4 -- -i --disable-rss --pkt-filter-mode=perfect \ + --rxq=8 --txq=8 --nb-cores=8 --nb-ports=1 + +Add a rule to direct ``ipv4-udp`` packet whose ``dst_ip=2.2.2.5, src_ip=2.2.2.3, src_port=32, dst_port=32`` to queue 1: + +.. code-block:: console + + testpmd> flow_director_filter 0 mode IP add flow ipv4-udp \ + src 2.2.2.3 32 dst 2.2.2.5 32 vlan 0 flexbytes () \ + fwd pf queue 1 fd_id 1 + +Check the flow director status: + +.. code-block:: console + + testpmd> show port fdir 0 + + ######################## FDIR infos for port 0 #################### + MODE: PERFECT + SUPPORTED FLOW TYPE: ipv4-frag ipv4-tcp ipv4-udp ipv4-sctp ipv4-other + ipv6-frag ipv6-tcp ipv6-udp ipv6-sctp ipv6-other + l2_payload + FLEX PAYLOAD INFO: + max_len: 16 payload_limit: 480 + payload_unit: 2 payload_seg: 3 + bitmask_unit: 2 bitmask_num: 2 + MASK: + vlan_tci: 0x0000, + src_ipv4: 0x00000000, + dst_ipv4: 0x00000000, + src_port: 0x0000, + dst_port: 0x0000 + src_ipv6: 0x00000000,0x00000000,0x00000000,0x00000000, + dst_ipv6: 0x00000000,0x00000000,0x00000000,0x00000000 + FLEX PAYLOAD SRC OFFSET: + L2_PAYLOAD: 0 1 2 3 4 5 6 ... + L3_PAYLOAD: 0 1 2 3 4 5 6 ... + L4_PAYLOAD: 0 1 2 3 4 5 6 ... + FLEX MASK CFG: + ipv4-udp: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + ipv4-tcp: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + ipv4-sctp: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + ipv4-other: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + ipv4-frag: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + ipv6-udp: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + ipv6-tcp: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + ipv6-sctp: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + ipv6-other: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + ipv6-frag: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + l2_payload: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + guarant_count: 1 best_count: 0 + guarant_space: 512 best_space: 7168 + collision: 0 free: 0 + maxhash: 0 maxlen: 0 + add: 0 remove: 0 + f_add: 0 f_remove: 0 + + +Delete all flow director rules on a port: + +.. code-block:: console + + testpmd> flush_flow_director 0 + diff --git a/doc/guides/nics/index.rst b/doc/guides/nics/index.rst index 8618114..8c9abcb 100644 --- a/doc/guides/nics/index.rst +++ b/doc/guides/nics/index.rst @@ -42,6 +42,7 @@ Network Interface Controller Drivers enic fm10k ixgbe + i40e intel_vf mlx4 mlx5