diff options
| author | Martin KaFai Lau <kafai@fb.com> | 2018-07-24 08:40:22 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-07-25 06:57:55 +0200 |
| commit | 38d5d3b3d5dbc0e0bb51fa6f7559d0d5a27916f6 (patch) | |
| tree | c19295299de7d53fcacffb42ea67b3c00206aeab /tools/lib/bpf/btf.h | |
| parent | 5b891af7fca14526b2a87c6f38b004e2df655ef4 (diff) | |
bpf: Introduce BPF_ANNOTATE_KV_PAIR
This patch introduces BPF_ANNOTATE_KV_PAIR to signal the
bpf loader about the btf key_type and value_type of a bpf map.
Please refer to the changes in test_btf_haskv.c for its usage.
Both iproute2 and libbpf loader will then have the same
convention to find out the map's btf_key_type_id and
btf_value_type_id from a map's name.
Fixes: 8a138aed4a80 ("bpf: btf: Add BTF support to libbpf")
Suggested-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools/lib/bpf/btf.h')
| -rw-r--r-- | tools/lib/bpf/btf.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/lib/bpf/btf.h b/tools/lib/bpf/btf.h index ed3a84370ccc..e2a09a155f84 100644 --- a/tools/lib/bpf/btf.h +++ b/tools/lib/bpf/btf.h @@ -9,6 +9,7 @@ #define BTF_ELF_SEC ".BTF" struct btf; +struct btf_type; typedef int (*btf_print_fn_t)(const char *, ...) __attribute__((format(printf, 1, 2))); @@ -16,6 +17,7 @@ typedef int (*btf_print_fn_t)(const char *, ...) void btf__free(struct btf *btf); struct btf *btf__new(__u8 *data, __u32 size, btf_print_fn_t err_log); __s32 btf__find_by_name(const struct btf *btf, const char *type_name); +const struct btf_type *btf__type_by_id(const struct btf *btf, __u32 id); __s64 btf__resolve_size(const struct btf *btf, __u32 type_id); int btf__fd(const struct btf *btf); |