diff options
Diffstat (limited to 'tools/lib/bpf/libbpf.h')
| -rw-r--r-- | tools/lib/bpf/libbpf.h | 52 |
1 files changed, 49 insertions, 3 deletions
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index 6cd9c501624f..c3f77d9260fe 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -177,10 +177,29 @@ struct bpf_object_open_opts { * logs through its print callback. */ __u32 kernel_log_level; + /* Path to BPF FS mount point to derive BPF token from. + * + * Created BPF token will be used for all bpf() syscall operations + * that accept BPF token (e.g., map creation, BTF and program loads, + * etc) automatically within instantiated BPF object. + * + * If bpf_token_path is not specified, libbpf will consult + * LIBBPF_BPF_TOKEN_PATH environment variable. If set, it will be + * taken as a value of bpf_token_path option and will force libbpf to + * either create BPF token from provided custom BPF FS path, or will + * disable implicit BPF token creation, if envvar value is an empty + * string. bpf_token_path overrides LIBBPF_BPF_TOKEN_PATH, if both are + * set at the same time. + * + * Setting bpf_token_path option to empty string disables libbpf's + * automatic attempt to create BPF token from default BPF FS mount + * point (/sys/fs/bpf), in case this default behavior is undesirable. + */ + const char *bpf_token_path; size_t :0; }; -#define bpf_object_open_opts__last_field kernel_log_level +#define bpf_object_open_opts__last_field bpf_token_path /** * @brief **bpf_object__open()** creates a bpf_object by opening @@ -520,10 +539,12 @@ struct bpf_kprobe_multi_opts { size_t cnt; /* create return kprobes */ bool retprobe; + /* create session kprobes */ + bool session; size_t :0; }; -#define bpf_kprobe_multi_opts__last_field retprobe +#define bpf_kprobe_multi_opts__last_field session LIBBPF_API struct bpf_link * bpf_program__attach_kprobe_multi_opts(const struct bpf_program *prog, @@ -741,9 +762,20 @@ 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 */ @@ -765,6 +797,8 @@ bpf_program__attach_cgroup(const struct bpf_program *prog, int cgroup_fd); LIBBPF_API struct bpf_link * bpf_program__attach_netns(const struct bpf_program *prog, int netns_fd); LIBBPF_API struct bpf_link * +bpf_program__attach_sockmap(const struct bpf_program *prog, int map_fd); +LIBBPF_API struct bpf_link * bpf_program__attach_xdp(const struct bpf_program *prog, int ifindex); LIBBPF_API struct bpf_link * bpf_program__attach_freplace(const struct bpf_program *prog, @@ -995,7 +1029,7 @@ LIBBPF_API int bpf_map__set_map_extra(struct bpf_map *map, __u64 map_extra); LIBBPF_API int bpf_map__set_initial_value(struct bpf_map *map, const void *data, size_t size); -LIBBPF_API void *bpf_map__initial_value(struct bpf_map *map, size_t *psize); +LIBBPF_API void *bpf_map__initial_value(const struct bpf_map *map, size_t *psize); /** * @brief **bpf_map__is_internal()** tells the caller whether or not the @@ -1263,6 +1297,7 @@ LIBBPF_API int ring_buffer__add(struct ring_buffer *rb, int map_fd, ring_buffer_sample_fn sample_cb, void *ctx); LIBBPF_API int ring_buffer__poll(struct ring_buffer *rb, int timeout_ms); LIBBPF_API int ring_buffer__consume(struct ring_buffer *rb); +LIBBPF_API int ring_buffer__consume_n(struct ring_buffer *rb, size_t n); LIBBPF_API int ring_buffer__epoll_fd(const struct ring_buffer *rb); /** @@ -1337,6 +1372,17 @@ LIBBPF_API int ring__map_fd(const struct ring *r); */ LIBBPF_API int ring__consume(struct ring *r); +/** + * @brief **ring__consume_n()** consumes up to a requested amount of items from + * a ringbuffer without event polling. + * + * @param r A ringbuffer object. + * @param n Maximum amount of items to consume. + * @return The number of items consumed, or a negative number if any of the + * callbacks return an error. + */ +LIBBPF_API int ring__consume_n(struct ring *r, size_t n); + struct user_ring_buffer_opts { size_t sz; /* size of this struct, for forward/backward compatibility */ }; |