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| author | Alexei Starovoitov <ast@kernel.org> | 2019-10-15 20:24:58 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-10-17 16:44:35 +0200 |
| commit | ccfe29eb29c2edcea6552072ef00ff4117f53e83 (patch) | |
| tree | 43baf143abe39dd1c045e90e209a00f1993e4930 /tools/include | |
| parent | 8580ac9404f6240668a026785d7d8856f0530409 (diff) | |
| download | linux-ccfe29eb29c2edcea6552072ef00ff4117f53e83.tar.gz linux-ccfe29eb29c2edcea6552072ef00ff4117f53e83.tar.bz2 linux-ccfe29eb29c2edcea6552072ef00ff4117f53e83.zip | |
bpf: Add attach_btf_id attribute to program load
Add attach_btf_id attribute to prog_load command.
It's similar to existing expected_attach_type attribute which is
used in several cgroup based program types.
Unfortunately expected_attach_type is ignored for
tracing programs and cannot be reused for new purpose.
Hence introduce attach_btf_id to verify bpf programs against
given in-kernel BTF type id at load time.
It is strictly checked to be valid for raw_tp programs only.
In a later patches it will become:
btf_id == 0 semantics of existing raw_tp progs.
btd_id > 0 raw_tp with BTF and additional type safety.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20191016032505.2089704-5-ast@kernel.org
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/uapi/linux/bpf.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index a65c3b0c6935..3bb2cd1de341 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -420,6 +420,7 @@ union bpf_attr { __u32 line_info_rec_size; /* userspace bpf_line_info size */ __aligned_u64 line_info; /* line info */ __u32 line_info_cnt; /* number of bpf_line_info records */ + __u32 attach_btf_id; /* in-kernel BTF type id to attach to */ }; struct { /* anonymous struct used by BPF_OBJ_* commands */ |