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| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2022-11-15 14:00:07 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-11-16 06:36:24 +0100 |
| commit | df9c41e9db2d0fc9feba0423c21e4319d8acd033 (patch) | |
| tree | 90c478f3c9b4ac77c118ae5512bf6bab1bbe7315 /tools/bpf | |
| parent | docs/bpf: Fix sample code in MAP_TYPE_ARRAY docs (diff) | |
| download | linux-df9c41e9db2d0fc9feba0423c21e4319d8acd033.tar.xz linux-df9c41e9db2d0fc9feba0423c21e4319d8acd033.zip | |
bpftool: Check argc first before "file" in do_batch()
If the parameters for batch are more than 2, check argc first can
return immediately, no need to use is_prefix() to check "file" with
a little overhead and then check argc, it is better to check "file"
only when the parameters for batch are 2.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Acked-by: Stanislav Fomichev <sdf@google.com>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/r/1668517207-11822-1-git-send-email-yangtiezhu@loongson.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/bpf')
| -rw-r--r-- | tools/bpf/bpftool/main.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c index 741e50ee0b6c..337ab7977ea4 100644 --- a/tools/bpf/bpftool/main.c +++ b/tools/bpf/bpftool/main.c @@ -337,12 +337,12 @@ static int do_batch(int argc, char **argv) if (argc < 2) { p_err("too few parameters for batch"); return -1; - } else if (!is_prefix(*argv, "file")) { - p_err("expected 'file', got: %s", *argv); - return -1; } else if (argc > 2) { p_err("too many parameters for batch"); return -1; + } else if (!is_prefix(*argv, "file")) { + p_err("expected 'file', got: %s", *argv); + return -1; } NEXT_ARG(); |