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. >