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tools/bpf: Support new uapi for map element bpf iterator

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Previous commit adjusted kernel uapi for map
element bpf iterator. This patch adjusted libbpf API
due to uapi change. bpftool and bpf_iter selftests
are also changed accordingly.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200805055058.1457623-1-yhs@fb.com
This commit is contained in:
Yonghong Song 2020-08-04 22:50:58 -07:00 • committed by Alexei Starovoitov
parent 5e7b30205c
commit 74fc097de3
7 changed files with 58 additions and 25 deletions
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6
tools/lib/bpf/libbpf.c
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@ -8306,10 +8306,8 @@ bpf_program__attach_iter(struct bpf_program *prog,
if (!OPTS_VALID(opts, bpf_iter_attach_opts))
return ERR_PTR(-EINVAL);
if (OPTS_HAS(opts, map_fd)) {
target_fd = opts->map_fd;
link_create_opts.flags = BPF_ITER_LINK_MAP_FD;
}
link_create_opts.iter_info = OPTS_GET(opts, link_info, (void *)0);
link_create_opts.iter_info_len = OPTS_GET(opts, link_info_len, 0);
prog_fd = bpf_program__fd(prog);
if (prog_fd < 0) {