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/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 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 constant_tsc=yes nonstop_tsc=no -> using unreliable clock cycles ! EAL: open shared lib /root/mtcp/librte_pmd_virtio.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 rte_virtio_pmd EAL: PCI memory mapped at 0x7f88f0200000 PMD: virtio_read_caps(): [40] skipping non VNDR cap id: 11 PMD: virtio_read_caps(): no modern virtio pci device found. PMD: vtpci_init(): trying with legacy virtio pci. EAL: PCI Port IO found start=0xc0c0 PMD: virtio_negotiate_features(): guest_features before negotiate = 100cf8020 PMD: virtio_negotiate_features(): host_features before negotiate = 719fffe7 PMD: virtio_negotiate_features(): features after negotiate = 8f8020 PMD: eth_virtio_dev_init(): PORT MAC: 04:01:DF:1E:D5:02 PMD: eth_virtio_dev_init(): VIRTIO_NET_F_MQ is not supported PMD: virtio_dev_cq_queue_setup(): >> PMD: virtio_dev_queue_setup(): setting up queue: 2 PMD: virtio_dev_queue_setup(): vq_size: 64 nb_desc:0 PMD: virtio_dev_queue_setup(): vring_size: 4612, rounded_vring_size: 8192 PMD: virtio_dev_queue_setup(): vq->vq_ring_mem: 0x1b142000 PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7f88da142000 PMD: eth_virtio_dev_init(): config->max_virtqueue_pairs=1 PMD: eth_virtio_dev_init(): config->status=1 PMD: eth_virtio_dev_init(): PORT MAC: 04:01:DF:1E:D5:02 PMD: eth_virtio_dev_init(): hw->max_rx_queues=1 hw->max_tx_queues=1 PMD: eth_virtio_dev_init(): port 0 vendorID=0x1af4 deviceID=0x1000 PMD: virtio_dev_vring_start(): >> 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: virtio_dev_configure(): configure PMD: virtio_dev_rx_queue_setup(): >> PMD: virtio_dev_queue_setup(): setting up queue: 0 PMD: virtio_dev_queue_setup(): vq_size: 256 nb_desc:128 PMD: virtio_dev_queue_setup(): vring_size: 10244, rounded_vring_size: 12288 PMD: virtio_dev_queue_setup(): vq->vq_ring_mem: 0x1b11c000 PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7f88da11c000 PMD: virtio_dev_tx_queue_setup(): >> PMD: virtio_dev_queue_setup(): setting up queue: 1 PMD: virtio_dev_queue_setup(): vq_size: 256 nb_desc:512 PMD: virtio_dev_queue_setup(): vring_size: 10244, rounded_vring_size: 12288 PMD: virtio_dev_queue_setup(): vq->vq_ring_mem: 0x1b117000 PMD: virtio_dev_queue_setup(): vq->vq_ring_virt_mem: 0x7f88da117000 PMD: virtio_dev_link_update(): Get link status from hw PMD: virtio_dev_link_update(): Port 0 is up PMD: virtio_dev_rxtx_start(): >> PMD: virtio_dev_vring_start(): >> PMD: virtio_dev_vring_start(): Allocated 256 bufs PMD: virtio_dev_vring_start(): >> PMD: virtio_dev_start(): nb_queues=1 PMD: virtio_dev_start(): Notified backend at initialization rte_eth_dev_config_restore: port 0: MAC address array not supported PMD: virtio_send_command(): vq->vq_desc_head_idx = 0, status = 255, vq->hw->cvq = 0x7f88da144c40 vq = 0x7f88da144c40 PMD: virtio_send_command(): vq->vq_queue_index = 2 PMD: virtio_send_command(): vq->vq_free_cnt=64 vq->vq_desc_head_idx=0 PMD: virtio_send_command(): vq->vq_desc_head_idx = 0, status = 255, vq->hw->cvq = 0x7f88da144c40 vq = 0x7f88da144c40 PMD: virtio_send_command(): vq->vq_queue_index = 2 PMD: virtio_send_command(): vq->vq_free_cnt=64 vq->vq_desc_head_idx=0 PMD: virtio_dev_link_update(): Get link status from hw PMD: virtio_dev_link_update(): Port 0 is up done: PMD: virtio_send_command(): vq->vq_desc_head_idx = 0, status = 255, vq->hw->cvq = 0x7f88da144c40 vq = 0x7f88da144c40 PMD: virtio_send_command(): vq->vq_queue_index = 2 PMD: virtio_send_command(): vq->vq_free_cnt=64 vq->vq_desc_head_idx=0 Port 0, MAC address: 04:01:DF:1E:D5:02

Checking link statusPMD: virtio_dev_link_update(): Get link status from hw PMD: virtio_dev_link_update(): Port 0 is up done PMD: virtio_dev_link_update(): Get link status from hw PMD: virtio_dev_link_update(): Port 0 is up Port 0 Link Up - speed 10000 Mbps - full-duplex Configuration updated by mtcp_setconf(). CPU 0: initialization finished. [mtcp_create_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?