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| author | Quentin Monnet <quentin.monnet@netronome.com> | 2019-08-20 11:31:53 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2019-08-20 18:51:06 +0200 |
| commit | 09d7c2e32b6e06d58fe7a5aa38847f4719ab4cc7 (patch) | |
| tree | 468ec4aa0449a0e88497e2ab306f567dda65f0bf /tools/lib | |
| parent | libbpf: refactor bpf_*_get_next_id() functions (diff) | |
| download | linux-09d7c2e32b6e06d58fe7a5aa38847f4719ab4cc7.tar.xz linux-09d7c2e32b6e06d58fe7a5aa38847f4719ab4cc7.zip | |
libbpf: add bpf_btf_get_next_id() to cycle through BTF objects
Add an API function taking a BTF object id and providing the id of the
next BTF object in the kernel. This can be used to list all BTF objects
loaded on the system.
v2:
- Rebase on top of Andrii's changes regarding libbpf versioning.
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/bpf/bpf.c | 5 | ||||
| -rw-r--r-- | tools/lib/bpf/bpf.h | 1 | ||||
| -rw-r--r-- | tools/lib/bpf/libbpf.map | 2 |
3 files changed, 8 insertions, 0 deletions
diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c index 1439e99c9be5..cbb933532981 100644 --- a/tools/lib/bpf/bpf.c +++ b/tools/lib/bpf/bpf.c @@ -593,6 +593,11 @@ int bpf_map_get_next_id(__u32 start_id, __u32 *next_id) return bpf_obj_get_next_id(start_id, next_id, BPF_MAP_GET_NEXT_ID); } +int bpf_btf_get_next_id(__u32 start_id, __u32 *next_id) +{ + return bpf_obj_get_next_id(start_id, next_id, BPF_BTF_GET_NEXT_ID); +} + int bpf_prog_get_fd_by_id(__u32 id) { union bpf_attr attr; diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h index ff42ca043dc8..0db01334740f 100644 --- a/tools/lib/bpf/bpf.h +++ b/tools/lib/bpf/bpf.h @@ -156,6 +156,7 @@ LIBBPF_API int bpf_prog_test_run(int prog_fd, int repeat, void *data, __u32 *retval, __u32 *duration); LIBBPF_API int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id); LIBBPF_API int bpf_map_get_next_id(__u32 start_id, __u32 *next_id); +LIBBPF_API int bpf_btf_get_next_id(__u32 start_id, __u32 *next_id); LIBBPF_API int bpf_prog_get_fd_by_id(__u32 id); LIBBPF_API int bpf_map_get_fd_by_id(__u32 id); LIBBPF_API int bpf_btf_get_fd_by_id(__u32 id); diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index 4e72df8e98ba..664ce8e7a60e 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -186,4 +186,6 @@ LIBBPF_0.0.4 { } LIBBPF_0.0.3; LIBBPF_0.0.5 { + global: + bpf_btf_get_next_id; } LIBBPF_0.0.4; |