[dpdk-dev] [PATCH v2] doc: correct spell issues in i40e.rst

Yang, Qiming qiming.yang at intel.com
Fri May 18 10:34:33 CEST 2018
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Hi, John
Could you help to review it?

Qiming
> -----Original Message-----
> From: Yang, Qiming
> Sent: Thursday, May 17, 2018 9:58 PM
> To: dev at dpdk.org
> Cc: Zhang, Helin <helin.zhang at intel.com>; Yang, Qiming
> <qiming.yang at intel.com>
> Subject: [PATCH v2] doc: correct spell issues in i40e.rst
> 
> This patch corrects some spelling issues in i40e.rst and clarifies which controllers
> and connections are part of the 700 Series.
> 
> Signed-off-by: Qiming Yang <qiming.yang at intel.com>
> ---
>  doc/guides/nics/i40e.rst | 71 +++++++++++++++++++++++++-----------------------
>  1 file changed, 37 insertions(+), 34 deletions(-)
> 
> diff --git a/doc/guides/nics/i40e.rst b/doc/guides/nics/i40e.rst index
> cc282be..18549bf 100644
> --- a/doc/guides/nics/i40e.rst
> +++ b/doc/guides/nics/i40e.rst
> @@ -4,14 +4,16 @@
>  I40E Poll Mode Driver
>  ======================
> 
> -The I40E PMD (librte_pmd_i40e) provides poll mode driver support -for the Intel
> X710/XL710/X722/XXV710 10/25/40 Gbps family of adapters.
> +The i40e PMD (librte_pmd_i40e) provides poll mode driver support for
> +10/25/40 Gbps Intel® Ethernet 700 Series Network Adapters based on the
> +Intel Ethernet Controller X710/XL710/XXV710 and Intel Ethernet
> +Connection X722 (only support part of features).
> 
> 
>  Features
>  --------
> 
> -Features of the I40E PMD are:
> +Features of the i40e PMD are:
> 
>  - Multiple queues for TX and RX
>  - Receiver Side Scaling (RSS)
> @@ -40,7 +42,7 @@ Features of the I40E PMD are:
>  - VF Daemon (VFD) - EXPERIMENTAL
>  - Dynamic Device Personalization (DDP)
>  - Queue region configuration
> -- Vitrual Function Port Representors
> +- Virtual Function Port Representors
> 
>  Prerequisites
>  -------------
> @@ -54,7 +56,7 @@ Prerequisites
>    section of the :ref:`Getting Started Guide for Linux <linux_gsg>`.
> 
>  - Upgrade the NVM/FW version following the `Intel® Ethernet NVM Update
> Tool Quick Usage Guide for Linux
> -  <https://www-
> ssl.intel.com/content/www/us/en/embedded/products/networking/nvm-
> update-tool-quick-linux-usage-guide.html>`_ if needed.
> +  <https://www-
> ssl.intel.com/content/www/us/en/embedded/products/networking/nvm-
> update-tool-quick-linux-usage-guide.html>`_ and `Intel® Ethernet NVM Update
> Tool: Quick Usage Guide for EFI
> <https://www.intel.com/content/www/us/en/embedded/products/networking/
> nvm-update-tool-quick-efi-usage-guide.html>`_ if needed.
> 
>  Pre-Installation Configuration
>  ------------------------------
> @@ -339,7 +341,7 @@ Delete all flow director rules on a port:
>  Floating VEB
>  ~~~~~~~~~~~~~
> 
> -The Intel® Ethernet Controller X710 and XL710 Family support a feature called
> +The Intel® Ethernet 700 Series support a feature called
>  "Floating VEB".
> 
>  A Virtual Ethernet Bridge (VEB) is an IEEE Edge Virtual Bridging (EVB) term @@ -
> 385,21 +387,22 @@ or greater.
>  Dynamic Device Personalization (DDP)
>  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> -The Intel® Ethernet Controller X*710 support a feature called "Dynamic Device -
> Personalization (DDP)", which is used to configure hardware by downloading -a
> profile to support protocols/filters which are not supported by default.
> -The DDP functionality requires a NIC firmware version of 6.0 or greater.
> +The Intel® Ethernet 700 Series except for the Intel Ethernet Connection
> +X722 support a feature called "Dynamic Device Personalization (DDP)",
> +which is used to configure hardware by downloading a profile to support
> +protocols/filters which are not supported by default. The DDP
> +functionality requires a NIC firmware version of 6.0 or greater.
> 
> -Current implementation supports MPLSoUDP/MPLSoGRE/GTP-C/GTP-
> U/PPPoE/PPPoL2TP,
> +Current implementation supports GTP-C/GTP-U/PPPoE/PPPoL2TP,
>  steering can be used with rte_flow API.
> 
> -Load a profile which supports MPLSoUDP/MPLSoGRE and store backup profile:
> +Load a profile which supports GTP and store backup profile:
> 
>  .. code-block:: console
> 
> -   testpmd> ddp add 0 ./mpls.pkgo,./backup.pkgo
> +   testpmd> ddp add 0 ./gtp.pkgo,./backup.pkgo
> 
> -Delete a MPLS profile and restore backup profile:
> +Delete a GTP profile and restore backup profile:
> 
>  .. code-block:: console
> 
> @@ -411,11 +414,11 @@ Get loaded DDP package info list:
> 
>     testpmd> ddp get list 0
> 
> -Display information about a MPLS profile:
> +Display information about a GTP profile:
> 
>  .. code-block:: console
> 
> -   testpmd> ddp get info ./mpls.pkgo
> +   testpmd> ddp get info ./gtp.pkgo
> 
>  Input set configuration
>  ~~~~~~~~~~~~~~~~~~~~~~~
> @@ -431,7 +434,7 @@ For example, to use only 48bit prefix for IPv6 src
> address for IPv6 TCP RSS:
> 
>  Queue region configuration
>  ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> -The Ethernet Controller X710/XL710 supports a feature of queue regions
> +The Intel® Ethernet 700 Series supports a feature of queue regions
>  configuration for RSS in the PF, so that different traffic classes or  different
> packet classification types can be separated to different  queues in different
> queue regions. There is an API for configuration @@ -455,8 +458,8 @@ details
> please refer to :doc:`../testpmd_app_ug/index`.
>  Limitations or Known issues
>  ---------------------------
> 
> -MPLS packet classification on X710/XL710 -
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> +MPLS packet classification
> +~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
>  For firmware versions prior to 5.0, MPLS packets are not recognized by the NIC.
>  The L2 Payload flow type in flow director can be used to classify MPLS packet
> @@ -504,14 +507,14 @@ Incorrect Rx statistics when packet is oversize
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
>  When a packet is over maximum frame size, the packet is dropped.
> -However the Rx statistics, when calling `rte_eth_stats_get` incorrectly
> +However, the Rx statistics, when calling `rte_eth_stats_get`
> +incorrectly
>  shows it as received.
> 
>  VF & TC max bandwidth setting
>  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
>  The per VF max bandwidth and per TC max bandwidth cannot be enabled in
> parallel.
> -The dehavior is different when handling per VF and per TC max bandwidth
> setting.
> +The behavior is different when handling per VF and per TC max bandwidth
> setting.
>  When enabling per VF max bandwidth, SW will check if per TC max bandwidth is
> enabled. If so, return failure.
>  When enabling per TC max bandwidth, SW will check if per VF max bandwidth
> @@ -532,11 +535,11 @@ VF performance is impacted by PCI extended tag
> setting  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
>  To reach maximum NIC performance in the VF the PCI extended tag must be -
> enabled. The DPDK I40E PF driver will set this feature during initialization,
> +enabled. The DPDK i40e PF driver will set this feature during
> +initialization,
>  but the kernel PF driver does not. So when running traffic on a VF which is
> managed by the kernel PF driver, a significant NIC performance downgrade has -
> been observed (for 64 byte packets, there is about 25% linerate downgrade for -
> a 25G device and about 35% for a 40G device).
> +been observed (for 64 byte packets, there is about 25% line-rate
> +downgrade for a 25GbE device and about 35% for a 40GbE device).
> 
>  For kernel version >= 4.11, the kernel's PCI driver will enable the extended  tag if
> it detects that the device supports it. So by default, this is not an @@ -577,12
> +580,12 @@ with DPDK, then the configuration will also impact port B in the
> NIC with  kernel driver, which don't want to use the TPID.
>  So PMD reports warning to clarify what is changed by writing global register.
> 
> -High Performance of Small Packets on 40G NIC
> ---------------------------------------------
> +High Performance of Small Packets on 40GbE NIC
> +----------------------------------------------
> 
>  As there might be firmware fixes for performance enhancement in latest
> version  of firmware image, the firmware update might be needed for getting
> high performance.
> -Check with the local Intel's Network Division application engineers for firmware
> updates.
> +Check the Intel support website for the latest firmware updates.
>  Users should consult the release notes specific to a DPDK release to identify  the
> validated firmware version for a NIC using the i40e driver.
> 
> @@ -605,10 +608,10 @@ performance or per packet latency.
>  Example of getting best performance with l3fwd example
>  ------------------------------------------------------
> 
> -The following is an example of running the DPDK ``l3fwd`` sample application to
> get high performance with an -Intel server platform and Intel XL710 NICs.
> +The following is an example of running the DPDK ``l3fwd`` sample
> +application to get high performance with a server with Intel Xeon processors
> and Intel Ethernet CNA XL710.
> 
> -The example scenario is to get best performance with two Intel XL710 40GbE
> ports.
> +The example scenario is to get best performance with two Intel Ethernet CNA
> XL710 40GbE ports.
>  See :numref:`figure_intel_perf_test_setup` for the performance test setup.
> 
>  .. _figure_intel_perf_test_setup:
> @@ -618,9 +621,9 @@ See :numref:`figure_intel_perf_test_setup` for the
> performance test setup.
>     Performance Test Setup
> 
> 
> -1. Add two Intel XL710 NICs to the platform, and use one port per card to get
> best performance.
> -   The reason for using two NICs is to overcome a PCIe Gen3's limitation since it
> cannot provide 80G bandwidth
> -   for two 40G ports, but two different PCIe Gen3 x8 slot can.
> +1. Add two Intel Ethernet CNA XL710 to the platform, and use one port per card
> to get best performance.
> +   The reason for using two NICs is to overcome a PCIe v3.0 limitation since it
> cannot provide 80GbE bandwidth
> +   for two 40GbE ports, but two different PCIe v3.0 x8 slot can.
>     Refer to the sample NICs output above, then we can select ``82:00.0`` and
> ``85:00.0`` as test ports::
> 
>        82:00.0 Ethernet [0200]: Intel XL710 for 40GbE QSFP+ [8086:1583] @@ -
> 636,7 +639,7 @@ See :numref:`figure_intel_perf_test_setup` for the
> performance test setup.
> 
>  4. Bind these two ports to igb_uio.
> 
> -5. As to XL710 40G port, we need at least two queue pairs to achieve best
> performance, then two queues per port
> +5. As to Intel Ethernet CNA XL710 40GbE port, we need at least two
> +queue pairs to achieve best performance, then two queues per port
>     will be required, and each queue pair will need a dedicated CPU core for
> receiving/transmitting packets.
> 
>  6. The DPDK sample application ``l3fwd`` will be used for performance testing,
> with using two ports for bi-directional forwarding.
> --
> 2.9.5
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