i'm setting up nftables flowtable for h/w offload, per https://wiki.nftables.org/wiki-nftables/index.php/Flowtables https://docs.kernel.org/networking/nf_flowtable.html#hardware-offload https://thermalcircle.de/doku.php?id=blog:linux:flowtables_1_a_netfilter_nftables_fastpath & a slew of older posts @ ML ... on /usr/local/sbin/nft -V nftables v1.1.0 (Commodore Bullmoose) cli: editline json: yes minigmp: no libxtables: no uname -rm 6.10.3-200.fc40.x86_64 x86_64 with lspci | grep -i eth 02:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01) 03:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01) ethtool -k enp3s0 | grep -i offload.*on tcp-segmentation-offload: on generic-segmentation-offload: on generic-receive-offload: on rx-vlan-offload: on tx-vlan-offload: on hw-tc-offload: on (which, iiuc, is sufficient?) a test config cat test.nft #!/usr/local/sbin/nft -f table inet filter { flowtable f { hook ingress priority 0; devices = { enp2s0, enp3s0 }; } chain input { type filter hook input priority 0; policy accept; } chain forward { type filter hook forward priority 1; policy drop; ct state invalid drop; tcp dport { 80, 443 } ct state established flow offload @f; ct state { established, related } accept; accept; } } fails conf check, nft -c -f ./test.nft ./test.nft:8:12-12: Error: Could not process rule: Operation not supported flowtable f { ^ otoh, per example @ https://docs.kernel.org/networking/nf_flowtable.html#hardware-offload edit flowtable f { hook ingress priority 0; - devices = { enp2s0, enp3s0 }; + flags offload; } passes conf check. and after load nft list flowtables table inet filter { flowtable f { hook ingress priority filter flags offload } } what's the correct/current usage for flowtable declaration in hardware offload use case? as documented @ wiki, or kernel docs? _seems_ it's kernel docs ... reading @, https://netfilter.org/projects/nftables/files/changes-nftables-1.1.0.txt i don't find (yet) the change re `flags offload` usage. what commit introduced it?