Hi, I tried to create a tap device using TestPMD as follows: testpmd -l 0-3 -n 4 --vdev=net_tap0 -- -i But, I get the error: PMD: Initializing pmd_tap for net_tap0 as dtap0 PMD: Unable to create TAP interface PMD: dtap0: tun_alloc() failed.
Appreciate if someone could help what I am missing. Here is the complete log, and list of modules loaded and the ixgbe interface bound to dpdk.===================================================================== root@intel-corei7-64:/tmp# /usr/bin/testpmd -l 0-3 -n 4 --vdev=net_tap0 -- -i EAL: Detected 16 lcore(s) EAL: Multi-process socket /var/run/.rte_unix EAL: Probing VFIO support... EAL: NUMA support not available consider that all memory is in socket_id 0 EAL: PCI device igb_uio 0000:04:00.0: uio device registered with irq 50 0000:04:00.0 on NUMA socket 0 EAL: probe driver: 8086:15ac net_ixgbe EAL: PCI device 0000:04:00.1 on NUMA socket 0 EAL: probe driver: 8086:15ac net_ixgbe EAL: PCI device 0000:0a:00.0 on NUMA socket 0 EAL: probe driver: 8086:1533 net_e1000_igb PMD: Initializing pmd_tap for net_tap0 as dtap0 PMD: Unable to create TAP interface PMD: dtap0: tun_alloc() failed. PMD: TAP Unable to initialize net_tap0 vdev_probe(): failed to initialize net_tap0 device EAL: Bus (vdev) probe failed. Interactive-mode selected testpmd: create a new mbuf pool <mbuf_pool_socket_0>: n=171456, size=2176, socket=0 testpmd: preferred mempool ops selected: ring_mp_mc Warning! port-topology=paired and odd forward ports number, the last port will pair with itself. Configuring Port 0 (socket 0) Port 0: 00:13:95:2B:DC:7E Checking link statuses... Done testpmd> root@intel-corei7-64:/tmp# lsmod Module Size Used by rte_kni 20480 0 igb_uio 16384 0 uio 16384 1 igb_uio 8021q 24576 0 nfc 69632 0 bnep 20480 2 intel_rapl 20480 0 igb 167936 0 ixgbe 249856 0 mei_me 28672 0 x86_pkg_temp_thermal 16384 0 intel_powerclamp 16384 0 mei 61440 1 mei_me mdio 16384 1 ixgbe coretemp 16384 0 root@intel-corei7-64:/tmp# root@intel-corei7-64:/tmp# root@intel-corei7-64:/tmp# dpdk-devbind --status Network devices using DPDK-compatible driver ============================================ 0000:04:00.0 'Ethernet Connection X552 10 GbE SFP+ 15ac' drv=igb_uio unused=ixgbe Network devices using kernel driver =================================== 0000:04:00.1 'Ethernet Connection X552 10 GbE SFP+ 15ac' if=eth2 drv=ixgbe unused=igb_uio 0000:0a:00.0 'I210 Gigabit Network Connection 1533' if=eth0 drv=igb unused=igb_uio *Active* ::Thanks for your help,Kandy
