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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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5
tools/include/uapi/linux/bpf.h
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@@ -117,6 +117,7 @@ enum bpf_cmd {
BPF_LINK_GET_NEXT_ID,
BPF_ENABLE_STATS,
BPF_ITER_CREATE,
BPF_LINK_DETACH,
};
enum bpf_map_type {
@@ -634,6 +635,10 @@ union bpf_attr {
__u32 old_prog_fd;
} link_update;
struct {
__u32 link_fd;
} link_detach;
struct { /* struct used by BPF_ENABLE_STATS command */
__u32 type;
} enable_stats;