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libbpf: add "prog_flags" to bpf_program/bpf_prog_load_attr/bpf_load_program_attr

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libbpf doesn't allow passing "prog_flags" during bpf program load in a
couple of load related APIs, "bpf_load_program_xattr", "load_program" and
"bpf_prog_load_xattr".

It makes sense to allow passing "prog_flags" which is useful for
customizing program loading.

Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Jiong Wang 2019-05-24 23:25:19 +01:00 • committed by Alexei Starovoitov
parent d6c2308c74
commit 046561981b
4 changed files with 6 additions and 0 deletions
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1
tools/lib/bpf/bpf.c
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@ -256,6 +256,7 @@ int bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr,
if (load_attr->name)
memcpy(attr.prog_name, load_attr->name,
min(strlen(load_attr->name), BPF_OBJ_NAME_LEN - 1));
attr.prog_flags = load_attr->prog_flags;
fd = sys_bpf_prog_load(&attr, sizeof(attr));
if (fd >= 0)