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run ./xdp_pass_user --dev lo error! in Ubuntu 20.04 #382
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alenliu ***@***.***> writes:
***@***.***:~/xdp-tutorial/basic01-xdp-pass# uname -a
Linux ubuntu20-04 5.4.0-169-generic #187-Ubuntu SMP Thu Nov 23 14:52:28 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
A 5.4 kernel is too old to use the XDP dispatcher, so you can't attach
multiple programs to a single interface...
Success: Loading XDP prog name:xdp_prog_simple(id:48) on device:lo(ifindex:1)
However, it looks like the fallback to loading a single program works,
and you end up with the attachment working?
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Hi, I have the same problem, but even though this happend, the example bpf code loaded successfully. My kernel version is 5.4, So if I just wanna to try single bpf program case, that means I can ignore this error msg? @tohojo [root@VM-119-213-tencentos basic01-xdp-pass]# ls Interface Prio Program name Mode ID Tag Chain actionstest xdp_prog_simple native 18 3b185187f1855c4c |
Minglong Dai ***@***.***> writes:
Hi, I have the same problem, but even though this happend, the example
bpf code loaded successfully. My kernel version is 5.4, So if I just
wanna to try single bpf program case, that means I can ignore this
error msg? @tohojo
Yup, that should be fine :)
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thks, It works |
Can anybody help me?
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