rte_eth_dev_count() (daq_dpdk.c) returns 0 despite of the same function returning 2 in $RTE_SDK/examples/ethtool's test. Likewise, rte_eth_dev_info_get(port, &inf) also return 0 in the attributes of the structure returned.

I am using: dpdk-stable-16.07.2

Here are the dpdk-binds:

Network devices using DPDK-compatible driver

0000:01:00.2 'Ethernet Controller X710 for 10GbE SFP+' drv=vfio-pci unused=
0000:01:00.3 'Ethernet Controller X710 for 10GbE SFP+' drv=vfio-pci unused=

Network devices using kernel driver

0000:01:00.0 'Ethernet Controller X710 for 10GbE SFP+' if=em1 drv=i40e unused=vfio-pci Active
0000:01:00.1 'Ethernet Controller X710 for 10GbE SFP+' if=em2 drv=i40e unused=vfio-pci
0000:04:00.0 'Ethernet Controller X710 for 10GbE SFP+' if=p7p1 drv=i40e unused=vfio-pci
0000:04:00.1 'Ethernet Controller X710 for 10GbE SFP+' if=p7p2 drv=i40e unused=vfio-pci
0000:04:00.2 'Ethernet Controller X710 for 10GbE SFP+' if=p7p3 drv=i40e unused=vfio-pci
0000:04:00.3 'Ethernet Controller X710 for 10GbE SFP+' if=p7p4 drv=i40e unused=vfio-pci
0000:05:00.0 'Ethernet Controller X710 for 10GbE SFP+' if=p5p1 drv=i40e unused=vfio-pci
0000:05:00.1 'Ethernet Controller X710 for 10GbE SFP+' if=p5p2 drv=i40e unused=vfio-pci
0000:05:00.2 'Ethernet Controller X710 for 10GbE SFP+' if=p5p3 drv=i40e unused=vfio-pci
0000:05:00.3 'Ethernet Controller X710 for 10GbE SFP+' if=p5p4 drv=i40e unused=vfio-pci

The Snort version I am running:
,,_ -> Snort++ <-
o" )~ Version 3.0.0 (Build 243) from 2.9.11
'''' By Martin Roesch & The Snort Team
http://snort.org/contact#team
Copyright (C) 2014-2018 Cisco and/or its affiliates. All rights reserved.
Copyright (C) 1998-2013 Sourcefire, Inc., et al.
Using DAQ version 2.2.1
Using LuaJIT version 2.0.5
Using OpenSSL 1.0.1f 6 Jan 2014
Using libpcap version 1.5.3
Using PCRE version 8.31 2012-07-06
Using ZLIB version 1.2.8
Using LZMA version 5.1.0alpha

Lastly, I also tried building dpdk with -fPIC, which did not fix it.

some questions about the use of dpdk daq.

I need to run multiple process by dpdk,and I want to run multiple snort at first.But when I decided to change it as one of the dpdk examples——symmetric_mp .I found that the packets couldn't be shared with all process. If one get the the packet,others couldn't get it.
do you konw what's the trouble?

daq_dpdk.txt
The file is what I changed.And I used this edition—— daq_dpdk_multiqueue-0a6b5cbcdb66dc801d12e31c9c971f2318026610

seeing above error while running snort as per the example given for dpdk18.05_mq.
snort version is 3.0.0-254 and dpdk is 18.05

# ./snort --daq dpdk --daq-var dpdk_argc="-n4" -i "dpdk0:dpdk1" -Q
--------------------------------------------------
o")~   Snort++ 3.0.0-254
--------------------------------------------------
--------------------------------------------------
dpdk DAQ configured to inline.
Commencing packet processing
++ [0] dpdk0:dpdk1
EAL: Detected 16 lcore(s)
EAL: Detected 1 NUMA nodes
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: No free hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...
EAL: PCI device 0000:01:00.0 on NUMA socket 0
EAL:   probe driver: 8086:1521 net_e1000_igb
EAL: PCI device 0000:01:00.1 on NUMA socket 0
EAL:   probe driver: 8086:1521 net_e1000_igb
EAL: PCI device 0000:06:00.0 on NUMA socket 0
EAL:   probe driver: 8086:1583 net_i40e
PMD: Global register is changed during support QinQ parser
PMD: Global register is changed during configure hash input set
PMD: Global register is changed during configure fdir mask
PMD: Global register is changed during configure hash mask
PMD: Global register is changed during support QinQ cloud filter
PMD: Global register is changed during disable FDIR flexible payload
EAL: PCI device 0000:06:00.1 on NUMA socket 0
EAL:   probe driver: 8086:1583 net_i40e
PMD: Global register is changed during support QinQ parser
PMD: Global register is changed during configure hash input set
PMD: Global register is changed during configure fdir mask
PMD: Global register is changed during configure hash mask
PMD: Global register is changed during support QinQ cloud filter
PMD: Global register is changed during disable FDIR flexible payload
Can't start DAQ (-1) - start_device: Couldn't setup filters for port 0 - "Isolate port failed
"

Analyzer: Failed to start DAQ instance
Segmentation fault (core dumped)

$ sudo ./dpdk-devbind.py --status

Network devices using DPDK-compatible driver
============================================
0000:06:00.0 'Ethernet Controller XL710 for 40GbE QSFP+ 1583' drv=igb_uio unused=i40e,uio_pci_generic
0000:06:00.1 'Ethernet Controller XL710 for 40GbE QSFP+ 1583' drv=igb_uio unused=i40e,uio_pci_generic

Network devices using kernel driver
===================================
0000:01:00.0 'I350 Gigabit Network Connection 1521' if=enp1s0f0 drv=igb unused=igb_uio,uio_pci_generic *Active*
0000:01:00.1 'I350 Gigabit Network Connection 1521' if=enp1s0f1 drv=igb unused=igb_uio,uio_pci_generic

Other Network devices
=====================
<none>

This is on Fedora-30.

do you know what i am missing ? Even tried with taskset but error is same.