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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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9
src/bpf.h
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@@ -617,6 +617,15 @@ LIBBPF_API int bpf_prog_query(int target_fd, enum bpf_attach_type type,
__u32 query_flags, __u32 *attach_flags,
__u32 *prog_ids, __u32 *prog_cnt);
struct bpf_raw_tp_opts {
size_t sz; /* size of this struct for forward/backward compatibility */
const char *tp_name;
__u64 cookie;
size_t :0;
};
#define bpf_raw_tp_opts__last_field cookie
LIBBPF_API int bpf_raw_tracepoint_open_opts(int prog_fd, struct bpf_raw_tp_opts *opts);
LIBBPF_API int bpf_raw_tracepoint_open(const char *name, int prog_fd);
LIBBPF_API int bpf_task_fd_query(int pid, int fd, __u32 flags, char *buf,
__u32 *buf_len, __u32 *prog_id, __u32 *fd_type,