Hello, I have an Intel X520 10Gbit/s NIC with driver: $ sudo ethtool -i eth5 driver: ixgbe version: 5.7.1 firmware-version: 0x80000827, 16.5.19 expansion-rom-version: bus-info: 0000:04:00.1 supports-statistics: yes supports-test: yes supports-eeprom-access: yes supports-register-dump: yes supports-priv-flags: yes and Kernel: $ uname -a Linux 5.6.0-2-amd64 I tried this tutorial before hand: https://software.intel.com/content/www/us/en/develop/articles/setting-up-intel-ethernet-flow-director.html Unfortunately I am experiencing some strange behavior in combination with AF_XDP. For example, I am adding an ethtool flow-type rule like this: $ sudo ethtool -N eth5 flow-type udp4 dst-ip 239.0.1.1 dst-port 5500 action 0 Added rule with ID 4093 Checking it is there: $ sudo ethtool -n eth5 16 RX rings available Total 1 rules Filter: 4093 Rule Type: UDP over IPv4 Src IP addr: 0.0.0.0 mask: 255.255.255.255 Dest IP addr: 239.0.1.1 mask: 0.0.0.0 TOS: 0x0 mask: 0xff Src port: 0 mask: 0xffff Dest port: 5500 mask: 0x0 VLAN EtherType: 0x0 mask: 0xffff VLAN: 0x0 mask: 0xffff User-defined: 0x0 mask: 0xffffffffffffffff Action: Direct to queue 0 After that I am launching my AF_XDP program which firsts loads a compiled BPF-object file into the kernel (without any errors). I am checking ethtool again: $ sudo ethtool -n eth5 16 RX rings available Total 0 rules Any ideas why that is? I am not saying that my program is bug-free but it worked fine in combination with Mellannox ConnectX5 and Broadcom 1Gbit/s NIC (without zcopy on the broadcom though). Thank you Max
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