How to fix linux kernel don't trigger tx_ring

[xjj210130]

HI all:
My env is centos 7. core is 5.15.46 (build by myself) gcc 11.2.1 clang 14.0.6 llvm 14.0.6 bpftool is v5.15.46. I use bpf_redirect(redirectIfindex, 0);

to redirect packet. The para redirectIfindex is index network(sfp2).
However, i see there is no packet sent.
cat /sys/class/net/sfp2/statistics/tx_packets
The number is the same.

when i use xdp SKB model , the number change. But when i use NATIVE model, the number is the same. i build AF_XDP config

I use xdpdump/tcpdump to capture packet. There is no packet sent.
Is it any way to fix it ? Thanks

[sachintiptur]

Then your NIC driver doesn't support xdp hook i guess. AF_XDP is for sending pkts to user space.