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libbpf: Add bpf object kern_version attribute setter

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Unfortunately some distros don't have their kernel version defined
accurately in <linux/version.h> due to different long term support
reasons.

It is important to have a way to override the bpf kern_version
attribute during runtime: some old kernels might still check for
kern_version attribute during bpf_prog_load().

Signed-off-by: Rafael David Tinoco <rafaeldtinoco@ubuntu.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20210323040952.2118241-1-rafaeldtinoco@ubuntu.com
This commit is contained in:
Rafael David Tinoco
2021-03-23 01:09:52 -03:00
committed by Andrii Nakryiko
parent 53f0e7d8ec
commit b09a4999d9
3 changed files with 12 additions and 0 deletions
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@@ -359,4 +359,5 @@ LIBBPF_0.4.0 {
bpf_linker__finalize;
bpf_linker__free;
bpf_linker__new;
bpf_object__set_kversion;
} LIBBPF_0.3.0;