[ovs-discuss] Hot-plugging a Physical Port with DPDK Failed

[Ramzah Rehman]

^ Got that error when I was trying to add that interface to ovs switch as
follows:

#ovs-vsctl add-port OVS_BR_LEAF_0 dpdkx -- set Interface dpdkx type=dpdk
options:dpdk-devargs=0000:04:00.0

Best Regards,
Ramzah Rehman


On Mon, Dec 3, 2018 at 6:07 PM Ramzah Rehman <ramzahrehman at gmail.com> wrote:

> I bound  0000:04:00.0 with uio_pci_generic as follows:
>
>  # modprobe uio_pci_generic
> # $DPDK_DIR/usertools/dpdk-devbind.py --status
> # sudo $DPDK_DIR/usertools/dpdk-devbind.py --bind=uio_pci_generic
> 0000:04:00.0
>
> got same error in ovs-vswitched.log:
>
> 2018-12-3T08:21:40.430Z|00165|dpdk|ERR|EAL: Driver cannot attach the
> device ( 0000:04:00.0  )
> 2018-12-3T08:21:40.430Z|00166|dpdk|ERR|EAL: No port found for device (
> 0000:04:00.0  )
> 2018-12-3T08:21:40.430Z|00167|netdev_dpdk|WARN|Error attaching device
> 0000:04:00.0  ' to DPDK
> 2018-12-3T08:21:40.430Z|00168|netdev|WARN|dpdkx: could not set
> configuration (Invalid argument)
>
> Please help!!!
>
> Best Regards,
> Ramzah Rehman
>
>
> On Fri, Nov 30, 2018 at 1:47 PM Ramzah Rehman <ramzahrehman at gmail.com>
> wrote:
>
>> Hi. I Have installed Open vSwitch 2.9.4 with DPDK 17.11.4 on Ubuntu
>> 14.04.5 LTD and kernel version 4.4.0-31-generic on a server A following
>> these two links:
>> http://docs.openvswitch.org/en/latest/intro/install/dpdk/
>>
>> http://docs.openvswitch.org/en/latest/intro/install/general/#general-bootstrapping
>>
>> Now, when I run TCP client via iperf from server A to another server B, I
>> get a bandwidth of around 350Mbps on 1000Mbps link. I have not bound any
>> ports on server A to DPDK.  Please advise how can I reach bandwidth of
>> around 1000Mbps in this setting.  Is it because I need to bind physical
>> ports in use to DPDK driver?
>>
>> I have tried binding the physical port to DPDK (Hot-plugging) following
>> this link: http://docs.openvswitch.org/en/latest/topics/dpdk/phy/
>>
>> #ovs-vsctl add-port OVS_BR_LEAF_0 dpdkx -- set Interface dpdkx type=dpdk
>> options:dpdk-devargs=0000:03:02.0
>>
>> Error in ovs-vswitchd.log:
>>
>> 2018-11-30T08:21:40.430Z|00165|dpdk|ERR|EAL: Driver cannot attach the
>> device (0000:03:02.0)
>> 2018-11-30T08:21:40.430Z|00166|dpdk|ERR|EAL: No port found for device
>> (0000:03:02.0)
>> 2018-11-30T08:21:40.430Z|00167|netdev_dpdk|WARN|Error attaching device
>> '0000:03:02.0' to DPDK
>> 2018-11-30T08:21:40.430Z|00168|netdev|WARN|dpdkx: could not set
>> configuration (Invalid argument)
>>
>> Useful information:
>>
>> #uname -r
>> 4.4.0-31-generic
>>
>> #cat /proc/cmdline
>> BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic
>> root=UUID=286cabb9-ebd3-4b51-b1b2-8c139acb1d22 ro intel_iommu=on iommu=pt
>> quiet splash vt.handoff=7
>>
>> #cat /etc/*release
>> DISTRIB_ID=Ubuntu
>> DISTRIB_RELEASE=14.04
>> DISTRIB_CODENAME=trusty
>> DISTRIB_DESCRIPTION="Ubuntu 14.04.5 LTS"
>> NAME="Ubuntu"
>> VERSION="14.04.5 LTS, Trusty Tahr"
>> ID=ubuntu
>> ID_LIKE=debian
>> PRETTY_NAME="Ubuntu 14.04.5 LTS"
>> VERSION_ID="14.04"
>> HOME_URL="http://www.ubuntu.com/"
>> SUPPORT_URL="http://help.ubuntu.com/"
>> BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
>>
>> #/usr/src/dpdk-stable-17.11.4/usertools/dpdk-devbind.py --status
>>
>> Network devices using DPDK-compatible driver
>> ============================================
>> <none>
>>
>> Network devices using kernel driver
>> ===================================
>> 0000:00:19.0 'Ethernet Connection I217-LM 153a' if=eth2 drv=e1000e
>> unused= *Active*
>> 0000:03:02.0 'RTL8169 PCI Gigabit Ethernet Controller 8169' if=eth0
>> drv=r8169 unused=
>> 0000:04:00.0 'RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
>> 8168' if=eth1 drv=r8169 unused=
>>
>> Other Network devices
>> =====================
>> <none>
>>
>> Crypto devices using DPDK-compatible driver
>> ===========================================
>> <none>
>>
>> Crypto devices using kernel driver
>> ==================================
>> <none>
>>
>> Other Crypto devices
>> ====================
>> <none>
>>
>> Eventdev devices using DPDK-compatible driver
>> =============================================
>> <none>
>>
>> Eventdev devices using kernel driver
>> ====================================
>> <none>
>>
>> Other Eventdev devices
>> ======================
>> <none>
>>
>> Mempool devices using DPDK-compatible driver
>> ============================================
>> <none>
>>
>> Mempool devices using kernel driver
>> ===================================
>> <none>
>>
>> Other Mempool devices
>> =====================
>> <none>
>> #grep HugePages_ /proc/meminfo
>>
>> HugePages_Total:    1471
>> HugePages_Free:      959
>> HugePages_Rsvd:        0
>> HugePages_Surp:        0
>>
>>
>>
>> Best Regards,
>> Ramzah Rehman
>>
>
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