Messages in this thread | | | Date | Fri, 19 May 2023 12:01:09 -0700 | Subject | Re: a small question about bpftool struct_ops | From | Martin KaFai Lau <> |
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On 5/19/23 5:07 AM, Zhouyi Zhou wrote: > Dear developers: > I compiled bpftool and bpf tests in mainline (2d1bcbc6cd70), > but when I invoke: > bpftool struct_ops register bpf_cubic.bpf.o > > the command line fail with: > libbpf: struct_ops init_kern: struct tcp_congestion_ops data is not > found in struct bpf_struct_ops_tcp_congestion_ops
At the machine trying to register the bpf_cubic, please dump the vmlinux btf and search for bpf_struct_ops_tcp_congestion_ops and paste it here:
For example: #> bpftool btf dump file /sys/kernel/btf/vmlinux
...
[74578] STRUCT 'bpf_struct_ops_tcp_congestion_ops' size=256 vlen=3 'refcnt' type_id=145 bits_offset=0 'state' type_id=74569 bits_offset=32 'data' type_id=6241 bits_offset=512
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