Hi

I am able to run mTCP + DPDK on my home KVM guest fine with virtio, but if i run the same mTCP + DPDK app on DO minimum ( $5/month) droplet with priviate network interface attached to DPDK virtio pmd driver, the mTCP app got killed

here is my app output:

root@ubuntu-512mb-nyc2-01:~/mtcp# ./apps/example/epwget 10.128.32.188 1
Application configuration:
URL: /

of total_flows: 1

of cores: 1

Concurrency: 0

Loading mtcp configuration from : /etc/mtcp/config/epwget.conf
Loading interface setting
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: Auto-detected process type: PRIMARY
EAL: Probing VFIO support...
EAL: Module /sys/module/vfiopci 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 0x600000 bytes
EAL: Virtual area found at 0x7f88efc00000 (size = 0x600000)
EAL: Ask a virtual area of 0x200000 bytes
EAL: Virtual area found at 0x7f88ef800000 (size = 0x200000)
EAL: Ask a virtual area of 0x13e00000 bytes
EAL: Virtual area found at 0x7f88db800000 (size = 0x13e00000)
EAL: Ask a virtual area of 0x400000 bytes
EAL: Virtual area found at 0x7f88db200000 (size = 0x400000)
EAL: Ask a virtual area of 0xa00000 bytes
EAL: Virtual area found at 0x7f88da600000 (size = 0xa00000)
EAL: Ask a virtual area of 0x400000 bytes
EAL: Virtual area found at 0x7f88da000000 (size = 0x400000)
EAL: Ask a virtual area of 0xe00000 bytes
EAL: Virtual area found at 0x7f88d9000000 (size = 0xe00000)
EAL: Ask a virtual area of 0x200000 bytes
EAL: Virtual area found at 0x7f88d8c00000 (size = 0x200000)
EAL: Requesting 180 pages of size 2MB from socket 0
EAL: TSC frequency is ~2400027 KHz
EAL: WARNING: cpu flags constanttsc=yes nonstoptsc=no -> using unreliable clock cycles !
EAL: open shared lib /root/mtcp/librtepmdvirtio.so
EAL: Master lcore 0 is ready (tid=f1c8a940;cpuset=[0])
EAL: PCI device 0000:00:04.0 on NUMA socket -1
EAL: probe driver: 1af4:1000 rtevirtiopmd
EAL: PCI memory mapped at 0x7f88f0200000
PMD: virtioreadcaps(): [40] skipping non VNDR cap id: 11
PMD: virtioreadcaps(): no modern virtio pci device found.
PMD: vtpciinit(): trying with legacy virtio pci.
EAL: PCI Port IO found start=0xc0c0
PMD: virtionegotiatefeatures(): guestfeatures before negotiate = 100cf8020
PMD: virtionegotiatefeatures(): hostfeatures before negotiate = 719fffe7
PMD: virtionegotiatefeatures(): features after negotiate = 8f8020
PMD: ethvirtiodevinit(): PORT MAC: 04:01:DF:1E:D5:02
PMD: ethvirtiodevinit(): VIRTIONETFMQ is not supported
PMD: virtiodevcqqueuesetup(): >>
PMD: virtiodevqueuesetup(): setting up queue: 2
PMD: virtiodevqueuesetup(): vqsize: 64 nbdesc:0
PMD: virtiodevqueuesetup(): vringsize: 4612, roundedvringsize: 8192
PMD: virtiodevqueuesetup(): vq->vqringmem: 0x1b142000
PMD: virtiodevqueuesetup(): vq->vqringvirtmem: 0x7f88da142000
PMD: ethvirtiodevinit(): config->maxvirtqueuepairs=1
PMD: ethvirtiodevinit(): config->status=1
PMD: ethvirtiodevinit(): PORT MAC: 04:01:DF:1E:D5:02
PMD: ethvirtiodevinit(): hw->maxrxqueues=1 hw->maxtxqueues=1
PMD: ethvirtiodevinit(): port 0 vendorID=0x1af4 deviceID=0x1000
PMD: virtiodevvringstart(): >>
Total number of attached devices: 1
Interface name: dpdk0
Configurations:
Number of CPU cores available: 1
Number of CPU cores to use: 1
Number of source ip to use: 32
Maximum number of concurrency per core: 10000
Maximum number of preallocated buffers per core: 1000
Receive buffer size: 128
Send buffer size: 1024
TCP timeout seconds: 30
TCP timewait seconds: 0

NICs to print statistics: dpdk0

Interfaces:
name: dpdk0, ifindex: 0, hwaddr: 04:01:DF:1E:D5:02, ipaddr: 10.128.6.216, netmask: 255.255.0.0

Number of NIC queues: 1

Loading routing configurations from : /etc/mtcp/config/route.conf
Routes:
Destination: 10.128.0.0/16, Mask: 255.255.0.0, Masked: 10.128.0.0, Route: ifdx-0

Destination: 10.128.0.0/16, Mask: 255.255.0.0, Masked: 10.128.0.0, Route: ifdx-0

Loading ARP table from : /etc/mtcp/config/arp.conf
ARP Table:

IP addr: 10.128.32.188, dst_hwaddr: 04:01:E1:2F:04:02

Initializing port 0... PMD: virtiodevconfigure(): configure
PMD: virtiodevrxqueuesetup(): >>
PMD: virtiodevqueuesetup(): setting up queue: 0
PMD: virtiodevqueuesetup(): vqsize: 256 nbdesc:128
PMD: virtiodevqueuesetup(): vringsize: 10244, roundedvringsize: 12288
PMD: virtiodevqueuesetup(): vq->vqringmem: 0x1b11c000
PMD: virtiodevqueuesetup(): vq->vqringvirtmem: 0x7f88da11c000
PMD: virtiodevtxqueuesetup(): >>
PMD: virtiodevqueuesetup(): setting up queue: 1
PMD: virtiodevqueuesetup(): vqsize: 256 nbdesc:512
PMD: virtiodevqueuesetup(): vringsize: 10244, roundedvringsize: 12288
PMD: virtiodevqueuesetup(): vq->vqringmem: 0x1b117000
PMD: virtiodevqueuesetup(): vq->vqringvirtmem: 0x7f88da117000
PMD: virtiodevlinkupdate(): Get link status from hw
PMD: virtiodevlinkupdate(): Port 0 is up
PMD: virtiodevrxtxstart(): >>
PMD: virtiodevvringstart(): >>
PMD: virtiodevvringstart(): Allocated 256 bufs
PMD: virtiodevvringstart(): >>
PMD: virtiodevstart(): nbqueues=1
PMD: virtiodevstart(): Notified backend at initialization
rteethdevconfigrestore: port 0: MAC address array not supported
PMD: virtiosendcommand(): vq->vqdescheadidx = 0, status = 255, vq->hw->cvq = 0x7f88da144c40 vq = 0x7f88da144c40
PMD: virtiosendcommand(): vq->vqqueueindex = 2
PMD: virtiosendcommand(): vq->vqfreecnt=64
vq->vqdescheadidx=0
PMD: virtiosendcommand(): vq->vqdescheadidx = 0, status = 255, vq->hw->cvq = 0x7f88da144c40 vq = 0x7f88da144c40
PMD: virtiosendcommand(): vq->vqqueueindex = 2
PMD: virtiosendcommand(): vq->vqfreecnt=64
vq->vqdescheadidx=0
PMD: virtiodevlinkupdate(): Get link status from hw
PMD: virtiodevlinkupdate(): Port 0 is up
done:
PMD: virtiosendcommand(): vq->vqdescheadidx = 0, status = 255, vq->hw->cvq = 0x7f88da144c40 vq = 0x7f88da144c40
PMD: virtiosendcommand(): vq->vqqueueindex = 2
PMD: virtiosendcommand(): vq->vqfreecnt=64
vq->vqdeschead_idx=0
Port 0, MAC address: 04:01:DF:1E:D5:02

Checking link statusPMD: virtiodevlinkupdate(): Get link status from hw
PMD: virtiodevlinkupdate(): Port 0 is up
done
PMD: virtiodevlinkupdate(): Get link status from hw
PMD: virtiodevlinkupdate(): Port 0 is up
Port 0 Link Up - speed 10000 Mbps - full-duplex
Configuration updated by mtcpsetconf().
CPU 0: initialization finished.
[mtcpcreate_context:1173] CPU 0 is now the master thread.
[CPU 0] dpdk0 flows: 0, RX: 0(pps) (err: 0), 0.00(Gbps), TX: 0(pps), 0.00(Gbps)
[ ALL ] dpdk0 flows: 0, RX: 0(pps) (err: 0), 0.00(Gbps), TX: 0(pps), 0.00(Gbps)
Killed <====================KILLED HERE

does DO support binding private interface to DPDK virtio PMD driver?