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author | Martin KaFai Lau <kafai@fb.com> | 2019-10-24 17:18:11 -0700 |
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committer | Alexei Starovoitov <ast@kernel.org> | 2019-10-24 18:41:08 -0700 |
commit | 3820729160440158a014add69cc0d371061a96b2 (patch) | |
tree | bc5c31e1c4068ffc5748ac1ed1470aebeac9cfe2 /tools/bpf/bpftool | |
parent | 58eeb2289ab9bd8acad41a589431bbdbf7622595 (diff) |
bpf: Prepare btf_ctx_access for non raw_tp use case
This patch makes a few changes to btf_ctx_access() to prepare
it for non raw_tp use case where the attach_btf_id is not
necessary a BTF_KIND_TYPEDEF.
It moves the "btf_trace_" prefix check and typedef-follow logic to a new
function "check_attach_btf_id()" which is called only once during
bpf_check(). btf_ctx_access() only operates on a BTF_KIND_FUNC_PROTO
type now. That should also be more efficient since it is done only
one instead of every-time check_ctx_access() is called.
"check_attach_btf_id()" needs to find the func_proto type from
the attach_btf_id. It needs to store the result into the
newly added prog->aux->attach_func_proto. func_proto
btf type has no name, so a proper name should be stored into
"attach_func_name" also.
v2:
- Move the "btf_trace_" check to an earlier verifier phase (Alexei)
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191025001811.1718491-1-kafai@fb.com
Diffstat (limited to 'tools/bpf/bpftool')
0 files changed, 0 insertions, 0 deletions