[dpdk-users] KNI Error while Running KNI example on Google CLoud

[Stephen Hemminger]

On Tue, 8 Oct 2019 07:59:12 +0000 (UTC)
sachin gupta <sachingg at yahoo.com> wrote:

> Hi All,When i run the KNI sample application on Google Cloud, i get the following error
> 
> 
> 
> EAL: Detected 2 lcore(s)EAL: Detected 1 NUMA nodesEAL: Multi-process socket /var/run/dpdk/rte/mp_socketEAL: No free hugepages reported in hugepages-1048576kBEAL: Probing VFIO support...Oct 8 07:35:17 master-node kni[19444]: EAL: Probing VFIO support...EAL: PCI device 0000:00:04.0 on NUMA socket -1EAL: Invalid NUMA socket, default to 0EAL: probe driver: 1af4:1000 net_virtioOct 8 07:35:17 master-node kni[19444]: EAL: PCI device 0000:00:04.0 on NUMA socket -1Oct 8 07:35:17 master-node kni[19444]: EAL: Invalid NUMA socket, default to 0Oct 8 07:35:17 master-node kni[19444]: EAL: probe driver: 1af4:1000 net_virtioEAL: Error - exiting with code: 1 Cause: No supported Ethernet device foundOct 8 07:35:17 master-node kni[19444]: EAL: Error - exiting with code: 1#012 Cause:Oct 8 07:35:17 master-node kni[19444]: No supported Ethernet device found
> 
> I have set 128 hugepages each of size 128KB
> AnonHugePages:         0 kBShmemHugePages:        0 kBHugePages_Total:     128HugePages_Free:      114HugePages_Rsvd:        0HugePages_Surp:        0Hugepagesize:       2048 kB
> 
> 
> 
> ens4: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1460        inet 10.128.0.17  netmask 255.255.255.255  broadcast 0.0.0.0        inet6 fe80::4001:aff:fe80:11  prefixlen 64  scopeid 0x20<link>        ether 42:01:0a:80:00:11  txqueuelen 1000  (Ethernet)        RX packets 2064  bytes 5260296 (5.2 MB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 2001  bytes 183154 (183.1 KB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> 
> soot at master-node:~/dpdk/dpdk-stable-18.11.2# ./usertools/dpdk-devbind.py --statu 
> Network devices using kernel driver===================================0000:00:04.0 'Virtio network device 1000' if=ens4 drv=virtio-pci unused= *Active*
> No 'Crypto' devices detected============================
> No 'Eventdev' devices detected==============================
> No 'Mempool' devices detected=============================
> No 'Compress' devices detected==============================
> 
> ThanksSachin

Hard to tell on this email, bad line wrapping (and which ended up in spam folder).
But the startup output indicates you did not configure huge pages.
Did you use dpdk-setup.sh ?

With virtio you need to unbind the device from the kernel and bind it to dpdk
with dpdk-devbind or manually. In a cloud that means you need to have two
Ethernet devices, one for DPDK and one for logging in SSH etc.

Also last time I checked Google Cloud had a custom version of virtio and don't
think virtio developers test wit that.