Hello, I've recently migrated from dpdk-18.05 to dpdk-21.02. I built "kni" example according to this tutorial [1 [1]], every thing is fine except that it has no output packet (no tx). There is a same problem in dpdk-20.11. Have I ignored something? I would be grateful if anyone could help me.
It may also be helpful to mention that after I change the Interface state to UP, The output of `ip link` shows that the state of this interface still is DOWN. outputs: > ./BUILD/KNI -L 4-7 -N 4 -- -P -P 0X3 --CONFIG="(0,4,6),(1,5,7)" ------------------------------------------------------------------------------------------------------------ EAL: Detected 16 lcore(s) EAL: Detected 1 NUMA nodes EAL: Multi-process socket /var/run/dpdk/rte/mp_socket EAL: Selected IOVA mode 'PA' EAL: No available hugepages reported in hugepages-1048576kB EAL: Probing VFIO support... EAL: VFIO support initialized EAL: using IOMMU type 1 (Type 1) EAL: Probe PCI driver: net_i40e (8086:158b) device: 0000:06:00.0 (socket 0) EAL: Probe PCI driver: net_i40e (8086:158b) device: 0000:06:00.1 (socket 0) EAL: No legacy callbacks, legacy socket not created APP: Initialising port 0 ... APP: Initialising port 1 ... Checking link status ........done Port 0 Link up at 10 Gbps FDX Autoneg Port 1 Link up at 10 Gbps FDX Autoneg APP: ======================== APP: KNI Running APP: kill -SIGUSR1 128701 APP: Show KNI Statistics. APP: kill -SIGUSR2 128701 APP: Zero KNI Statistics. APP: ======================== APP: Lcore 5 is reading from port 1 APP: Lcore 6 is writing to port 0 APP: Lcore 7 is writing to port 1 APP: Lcore 4 is reading from port 0 APP: Configure network interface of 0 up KNI: Configure promiscuous mode of 0 to 1 KNI: Configure promiscuous mode of 0 to 0 -------------------------------------------------------------------------------------------------------------- >IFCONFIG VETH0 1.1.2.39/24 UP >TCPDUMP -V -N -I VETH0 ------------------------------------------------------------------------------------------------------------ 07:22:26.218095 IP (tos 0x0, ttl 64, id 15551, offset 0, flags [DF], proto ICMP (1), length 84) 1.1.2.2 > 1.1.2.39: ICMP echo request, id 229, seq 1, length 64 07:22:27.218093 IP (tos 0x0, ttl 64, id 15619, offset 0, flags [DF], proto ICMP (1), length 84) 1.1.2.2 > 1.1.2.39: ICMP echo request, id 229, seq 2, length 64 07:22:28.242082 IP (tos 0x0, ttl 64, id 15826, offset 0, flags [DF], proto ICMP (1), length 84) 1.1.2.2 > 1.1.2.39: ICMP echo request, id 229, seq 3, length 64 07:22:29.266097 IP (tos 0x0, ttl 64, id 15948, offset 0, flags [DF], proto ICMP (1), length 84) 1.1.2.2 > 1.1.2.39: ICMP echo request, id 229, seq 4, length 64 07:22:30.290083 IP (tos 0x0, ttl 64, id 16060, offset 0, flags [DF], proto ICMP (1), length 84) 1.1.2.2 > 1.1.2.39: ICMP echo request, id 229, seq 5, length 64 07:22:31.314073 IP (tos 0x0, ttl 64, id 16118, offset 0, flags [DF], proto ICMP (1), length 84) 1.1.2.2 > 1.1.2.39: ICMP echo request, id 229, seq 6, length 64 07:22:32.342079 IP (tos 0x0, ttl 64, id 16236, offset 0, flags [DF], proto ICMP (1), length 84) 1.1.2.2 > 1.1.2.39: ICMP echo request, id 229, seq 7, length 64 07:22:33.366074 IP (tos 0x0, ttl 64, id 16332, offset 0, flags [DF], proto ICMP (1), length 84) 1.1.2.2 > 1.1.2.39: ICMP echo request, id 229, seq 8, length 64 07:22:34.390079 IP (tos 0x0, ttl 64, id 16511, offset 0, flags [DF], proto ICMP (1), length 84) 1.1.2.2 > 1.1.2.39: ICMP echo request, id 229, seq 9, length 64 -------------------------------------------------------------------------------------------------------------- Best Regards Links: ------ [1] https://doc.dpdk.org/guides-21.02/sample_app_ug/kernel_nic_interface.html [1] Links: ------ [1] https://doc.dpdk.org/guides-20.11/sample_app_ug/kernel_nic_interface.html
