[dpdk-dev] basic forwarding example not working

Christian Ehrhardt christian.ehrhardt at canonical.com
Tue Apr 19 18:23:27 CEST 2016


Hi,
for virtio-pci devices you should either just unbind them or bind them to
one of the generic drivers like uio_pci_generic.
At least I never saw igb_uio on virtio-pci devices.

There might be more complete answers, but I think that should get you going.


Christian Ehrhardt
Software Engineer, Ubuntu Server
Canonical Ltd

On Tue, Apr 19, 2016 at 6:00 PM, Subbu CS <developer.subodh at gmail.com>
wrote:

> I am using two virtio network adapter on VM on KVM host.
>
> As  in following output, I have bound both interface with igb_uio driver
>
> ./dpdk_nic_bind.py --bind=igb_uio 00:0a.0
> ./dpdk_nic_bind.py --bind=igb_uio 00:0b.0
>
> [root at localhost tools]# ./dpdk_nic_bind.py --status
>
> Network devices using DPDK-compatible driver
> ============================================
> 0000:00:0a.0 'Virtio network device' drv=igb_uio unused=
> 0000:00:0b.0 'Virtio network device' drv=igb_uio unused=
>
> Network devices using kernel driver
> ===================================
> 0000:00:03.0 'RTL-8100/8101L/8139 PCI Fast Ethernet Adapter' if=ens3
> drv=8139cp unused=igb_uio *Active*
> 0000:00:08.0 'Virtio network device' if= drv=virtio-pci unused=igb_uio
> 0000:00:09.0 'Virtio network device' if= drv=virtio-pci unused=igb_uio
>
> Other network devices
> =====================
> <none>
>
>
> But when I run basic fowarding example from skeleton, I get following error
>
> ./basicfwd -c 1 -n 2
> EAL: Detected lcore 0 as core 0 on socket 0
> EAL: Support maximum 128 logical core(s) by configuration.
> EAL: Detected 1 lcore(s)
> EAL: Probing VFIO support...
> EAL: Module /sys/module/vfio_pci not found! error 2 (No such file or
> directory)
> EAL: VFIO modules not loaded, skipping VFIO support...
> EAL: Setting up physically contiguous memory...
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7f75de400000 (size = 0x200000)
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7f75de000000 (size = 0x200000)
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7f75ddc00000 (size = 0x200000)
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7f75dd800000 (size = 0x200000)
> EAL: Ask a virtual area of 0x27400000 bytes
> EAL: Virtual area found at 0x7f75b6200000 (size = 0x27400000)
> EAL: Ask a virtual area of 0x4a00000 bytes
> EAL: Virtual area found at 0x7f75b1600000 (size = 0x4a00000)
> EAL: Ask a virtual area of 0x1200000 bytes
> EAL: Virtual area found at 0x7f75b0200000 (size = 0x1200000)
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7f75afe00000 (size = 0x200000)
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7f75afa00000 (size = 0x200000)
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7f75af600000 (size = 0x200000)
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7f75af200000 (size = 0x200000)
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7f75aee00000 (size = 0x200000)
> EAL: Ask a virtual area of 0x200000 bytes
> EAL: Virtual area found at 0x7f75aea00000 (size = 0x200000)
> EAL: Requesting 370 pages of size 2MB from socket 0
> EAL: TSC frequency is ~1696081 KHz
> EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using unreliable
> clock cycles !
> EAL: Master lcore 0 is ready (tid=df5298c0;cpuset=[0])
> EAL: PCI device 0000:00:08.0 on NUMA socket -1
> EAL:   probe driver: 1af4:1000 rte_virtio_pmd
> EAL:   Not managed by a supported kernel driver, skipped
> Segmentation fault
>
> Please let me know what is the correct method to run the basic forwarding
> application.
>


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