From: "Mcnamara, John" <john.mcnamara@intel.com>
To: Alejandro Lucero <alejandro.lucero@netronome.com>,
"dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v2 16/18] doc: update NFP with PF support information
Date: Mon, 4 Sep 2017 14:20:24 +0000 [thread overview]
Message-ID: <B27915DBBA3421428155699D51E4CFE23ED9D63A@IRSMSX103.ger.corp.intel.com> (raw)
In-Reply-To: <1504275141-35448-17-git-send-email-alejandro.lucero@netronome.com>
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Alejandro Lucero
> Sent: Friday, September 1, 2017 3:12 PM
> To: dev@dpdk.org
> Subject: [dpdk-dev] [PATCH v2 16/18] doc: update NFP with PF support
> information
>
> NFP PMD has now support for both, PF and VFs. This patch updates the guide
> and give some information about implications.
>
> Signed-off-by: Alejandro Lucero <alejandro.lucero@netronome.com>
Minor comments below.
>..
> -The NFP Linux kernel drivers (including the required PF driver for the
> -NFP) are available on Github at
> +The NFP Linux netdev kernel driver for VFs is part of vanilla kernel
> +since kernel vesion 4.5, and support for the PF since kernel version
s/vesion/version/
> -DPDK runs in userspace and PMDs uses the Linux kernel UIO interface to -
> allow access to physical devices from userspace. The NFP PMD requires -the
> **igb_uio** UIO driver, available with DPDK, to perform correct -
> initialization.
> +NFP PMD needs to be used along with UIO **igb_uio** or VFIO (vfio-pci)
> +Linux kernel driver.
Probably better to fixed-width quote these as``igb_uio`` or ``vfio-pci``,
here and in other places.
> +Using the PF
> +------------
> +
> +NFP PMD has support for using the NFP PF as another DPDK port, but it
> +has not
s/but it has not/but it does not have/
> +possible to use the PMD with the VFs if the PF is being used by DPDK,
> +this is, NFP PF bound to igb_uio or vfio-pci kernel drivers. Future
s/this is, NFP PF/that is, with the NFP PF/
> +DPDK version will have a PMD able to work with the PF and VFs at the
> +same time and with the PF implementing VF management along wih other PF-
s/wih/with/
> +Depending on the Netronome's product installed in the system, firmware
s/Netronome's/Netronome/
> +files should be available under /lib/firmware/netronome. DPDK PMD
> +supporting the PF requires a specific link,
> +/lib/firmware/netronome/nic_dpdk_default.nffw, which should be created
> automatically with Netronome's Agilio products installation.
Fixed-width quote the file paths: ``/lib/firmware/netronome``, etc.
> +
> +PF multiport support
> +--------------------
> +
> +Some NFP cards support several physical ports with just one single PCI
> device.
> +DPDK core is designed with the 1:1 relationship between PCI devices and
> +DPDK ports, so NFP PMD PF support requires to handle the multiport case
s/to handle/handling/
> specifically.
> +During NFP PF initialization, the PMD will extract the information
> +about the number of PF ports from the firmware and will create as many
> +DPDK ports as needed.
> +
> +Because the unusual relationship between a single PCI device and
> +several DPDK ports, there are some limitations when using more than one
> +PF DPDK ports: there is no support for RX interrrupts and it is not
s/interrrupts/interrupts/
Reviewed-by: John McNamara <john.mcnamara@intel.com>
next prev parent reply other threads:[~2017-09-04 14:20 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-01 14:12 [dpdk-dev] [PATCH v2 00/18] net/nfp: add PF support Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 01/18] net/nfp: add NSP user space interface Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 02/18] net/nfp: add specific PF probe function Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 03/18] net/nfp: add support for new PCI id Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 04/18] net/nfp: add NSP support for commands Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 05/18] net/nfp: add NSP FW upload command Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 06/18] net/nfp: add NSP symbol resolution command Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 07/18] net/nfp: add FW upload logic Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 08/18] net/nfp: add support for vnic config bar mapping Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 09/18] net/nfp: add support for vNIC Rx/Tx bar mappings Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 10/18] net/nfp: support PF devices inside PMD initialization Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 11/18] net/nfp: allocate ethernet device from PF probe function Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 12/18] net/nfp: support PF multiport Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 13/18] net/nfp: add NSP support for HW link configuration Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 14/18] net/nfp: add support for HW port " Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 15/18] net/nfp: read PF port MAC addr using NSP Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 16/18] doc: update NFP with PF support information Alejandro Lucero
2017-09-04 14:20 ` Mcnamara, John [this message]
2017-09-04 16:03 ` Alejandro Lucero
2017-09-06 9:53 ` Ferruh Yigit
2017-09-06 10:43 ` Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 17/18] doc: update release notes with NFP PF support Alejandro Lucero
2017-09-04 16:12 ` Mcnamara, John
2017-09-19 9:53 ` Ferruh Yigit
2017-09-19 10:49 ` Alejandro Lucero
2017-09-01 14:12 ` [dpdk-dev] [PATCH v2 18/18] doc: create different features files for NFP drivers Alejandro Lucero
2017-09-04 16:29 ` Mcnamara, John
2017-09-06 16:15 ` [dpdk-dev] [PATCH v2 00/18] net/nfp: add PF support Ferruh Yigit
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=B27915DBBA3421428155699D51E4CFE23ED9D63A@IRSMSX103.ger.corp.intel.com \
--to=john.mcnamara@intel.com \
--cc=alejandro.lucero@netronome.com \
--cc=dev@dpdk.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).