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libbpf: Add bpf_link detach APIs

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Add low-level bpf_link_detach() API. Also add higher-level bpf_link__detach()
one.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200731182830.286260-3-andriin@fb.com
This commit is contained in:
Andrii Nakryiko
2020-07-31 11:28:27 -07:00
committed by Alexei Starovoitov
parent 73b11c2ab0
commit 2e49527e52
6 changed files with 25 additions and 0 deletions
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tools/lib/bpf/bpf.h
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@@ -178,6 +178,8 @@ LIBBPF_API int bpf_link_create(int prog_fd, int target_fd,
enum bpf_attach_type attach_type,
const struct bpf_link_create_opts *opts);
LIBBPF_API int bpf_link_detach(int link_fd);
struct bpf_link_update_opts {
size_t sz; /* size of this struct for forward/backward compatibility */
__u32 flags; /* extra flags */