[dpdk-users] Using KNI with virtio-net-pci
rrosmanov at gmail.com
Thu Jun 2 05:43:23 CEST 2016
I'm going to develop a DPDK application on a laptop, but the laptop's
hardware is not supported by DPDK. Furtunately, DPDK supports
paravirtualized devices(http://www.dpdk.org/doc/nics) including
So I'm trying to configure a QEMU guest for running the Kernel NIC
Interface(KNI) on a virtio-net-pci device. The problem is that the KNI
sample application doesn't accept the virtio-pci driver.
exec qemu-system-x86_64 -enable-kvm \
-cpu host -smp 2 \
-vga std \
-mem-prealloc -mem-path /dev/hugepages \
-drive file=GentooVM.img,if=virtio \
-netdev user,id=vmnic,hostname=gentoo \
-device $eth_device,netdev=vmnic \
-m 1024M \
-monitor stdio \
-name "Gentoo VM"
Running the KNI sample application in the guest:
sudo ./examples/kni/build/app/kni -c 0x3 -n 4 -- \
-P -p 0x1 --config="(0,0,1)"
EAL: Detected lcore 0 as core 0 on socket 0
EAL: Detected lcore 1 as core 0 on socket 0
EAL: Support maximum 128 logical core(s) by configuration.
EAL: Detected 2 lcore(s)
EAL: Probing VFIO support...
EAL: IOMMU type 1 (Type 1) is supported
EAL: IOMMU type 8 (No-IOMMU) is not supported
EAL: VFIO support initialized
EAL: Setting up physically contiguous memory...
EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using
unreliable clock cycles !
EAL: Master lcore 0 is ready (tid=657d58c0;cpuset=)
PMD: rte_igbvf_pmd_init(): >>
EAL: lcore 1 is ready (tid=305ff700;cpuset=)
EAL: PCI device 0000:00:03.0 on NUMA socket -1
EAL: probe driver: 1af4:1000 rte_virtio_pmd
EAL: Not managed by a supported kernel driver(0), skipped
PMD: virtio_read_caps(): failed to map pci device!
PMD: vtpci_init(): trying with legacy virtio pci.
00:03.0 Ethernet controller: Red Hat, Inc Virtio network device
I've noticed that pci_scan_one() function sets dev->kdrv =
RTE_KDRV_NONE in lib/librte_eal/linuxapp/eal/eal_pci.c, while the
driver is detected as virtio-pci
Is it even possible to run KNI with virtio-net-pci device?
If it's impossible, then are there other options?
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