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libbpf: add support for BPF cookie for raw_tp/tp_btf programs

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Wire up BPF cookie passing or raw_tp and tp_btf programs, both in
low-level and high-level APIs.

Acked-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Message-ID: <20240319233852.1977493-5-andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Andrii Nakryiko
2024-03-19 16:38:51 -07:00
committed by Andrii Nakryiko
parent cbd6e3596c
commit f5828cc352
5 changed files with 53 additions and 5 deletions
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11
src/libbpf.h
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@@ -760,9 +760,20 @@ bpf_program__attach_tracepoint_opts(const struct bpf_program *prog,
const char *tp_name,
const struct bpf_tracepoint_opts *opts);
struct bpf_raw_tracepoint_opts {
size_t sz; /* size of this struct for forward/backward compatibility */
__u64 cookie;
size_t :0;
};
#define bpf_raw_tracepoint_opts__last_field cookie
LIBBPF_API struct bpf_link *
bpf_program__attach_raw_tracepoint(const struct bpf_program *prog,
const char *tp_name);
LIBBPF_API struct bpf_link *
bpf_program__attach_raw_tracepoint_opts(const struct bpf_program *prog,
const char *tp_name,
struct bpf_raw_tracepoint_opts *opts);
struct bpf_trace_opts {
/* size of this struct, for forward/backward compatibility */