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libbpf: Add support for freplace attachment in bpf_link_create

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This adds support for supplying a target btf ID for the bpf_link_create()
operation, and adds a new bpf_program__attach_freplace() high-level API for
attaching freplace functions with a target.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/160138355387.48470.18026176785351166890.stgit@toke.dk
This commit is contained in:
Toke Høiland-Jørgensen
2020-09-29 14:45:53 +02:00
committed by Alexei Starovoitov
parent 43bc2874e7
commit a535909142
5 changed files with 60 additions and 9 deletions
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1
tools/lib/bpf/libbpf.map
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@@ -304,6 +304,7 @@ LIBBPF_0.2.0 {
global:
bpf_prog_bind_map;
bpf_prog_test_run_opts;
bpf_program__attach_freplace;
bpf_program__section_name;
btf__add_array;
btf__add_const;