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libbpf: Assign cookies to links in libbpf.

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Add a cookie field to the attributes of bpf_link_create().
Add bpf_program__attach_trace_opts() to attach a cookie to a link.

Signed-off-by: Kui-Feng Lee <kuifeng@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220510205923.3206889-5-kuifeng@fb.com
This commit is contained in:
Kui-Feng Lee
2022-05-10 13:59:22 -07:00
committed by Andrii Nakryiko
parent c116ae6130
commit aec48fffee
5 changed files with 40 additions and 4 deletions
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src/libbpf.map
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@@ -447,6 +447,7 @@ LIBBPF_0.8.0 {
bpf_object__destroy_subskeleton;
bpf_object__open_subskeleton;
bpf_program__attach_kprobe_multi_opts;
bpf_program__attach_trace_opts;
bpf_program__attach_usdt;
libbpf_register_prog_handler;
libbpf_unregister_prog_handler;