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From: Pavel Vajarov <freakpv@gmail.com>
To: Vincent Li <vincent.mc.li@gmail.com>
Cc: dave seddon <dave.seddon.ca@gmail.com>,
	 Stephen Hemminger <stephen@networkplumber.org>,
	users <users@dpdk.org>
Subject: Re: [dpdk-users] Peformance troubleshouting of TCP/IP stack over DPDK.
Date: Thu, 21 May 2020 11:09:42 +0300
Message-ID: <CAK9EM18KYgQnPrEj-cH84rhjcUHVkf1R98JkWD9ChBRm8S2_iw@mail.gmail.com> (raw)
In-Reply-To: <alpine.OSX.2.21.2005201240260.14078@sea-ml-00029224.olympus.f5net.com>

> I am curious how you get F-Stack working with KVM VM with SR-IOV. The
> author of F-Stack mentioned F-Stack not tested working for KVM VM. I had
> an issue report here: https://github.com/F-Stack/f-stack/issues/489

Hi there,

I asked our admin who setup the KVM for the tests.
He said that this parameter has been given to the QEMU:
 -device vfio-pci,host=af:00.2,id=hostdev0,bus=pci.0,addr=0x9

This is how the device configuration looks in the XML:
<hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
        <address domain='0x0000' bus='0xaf' slot='0x00' function='0x2'/>
      <alias name='hostdev0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09'

Here is how the things are seen from the guest machine:
00:03.0 Ethernet controller: Red Hat, Inc. Virtio network device    <-----
This device is used for SSH access to the server
00:09.0 Ethernet controller: Intel Corporation Ethernet Controller X710 for
10GbE SFP+ (rev 02)   <------ This is the 10Gpbs card used for the tests.

Network devices using DPDK-compatible driver
0000:00:09.0 'Ethernet Controller X710 for 10GbE SFP+ 1572' drv=igb_uio

Network devices using kernel driver
0000:00:03.0 'Virtio network device 1000' if=ens3 drv=virtio-pci
unused=igb_uio *Active*

Hope that helps.


  reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-06  5:14 Pavel Vajarov
2020-05-06 14:54 ` Stephen Hemminger
2020-05-07 10:47   ` Pavel Vajarov
2020-05-07 14:09     ` dave seddon
2020-05-07 20:31       ` Stephen Hemminger
2020-05-08  5:03         ` Pavel Vajarov
2020-05-20 19:43       ` Vincent Li
2020-05-21  8:09         ` Pavel Vajarov [this message]
2020-05-21 16:31           ` Vincent Li
2020-05-26 16:50 ` Vincent Li
2020-05-27  5:11   ` Pavel Vajarov
2020-05-27 16:44     ` Vincent Li

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