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Date:   Wed, 23 Sep 2020 22:04:37 +0000
From:   Song Liu <songliubraving@...com>
To:     Andrii Nakryiko <andrii.nakryiko@...il.com>
CC:     Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        "Kernel Team" <Kernel-team@...com>,
        Alexei Starovoitov <ast@...nel.org>,
        "Daniel Borkmann" <daniel@...earbox.net>,
        john fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>
Subject: Re: [PATCH v2 bpf-next 2/3] libbpf: introduce
 bpf_prog_test_run_xattr_opts



> On Sep 23, 2020, at 12:31 PM, Andrii Nakryiko <andrii.nakryiko@...il.com> wrote:
> 
> On Wed, Sep 23, 2020 at 9:55 AM Song Liu <songliubraving@...com> wrote:
>> 
>> This API supports new field cpu_plus in bpf_attr.test.
>> 
>> Acked-by: John Fastabend <john.fastabend@...il.com>
>> Signed-off-by: Song Liu <songliubraving@...com>
>> ---
>> tools/lib/bpf/bpf.c      | 13 ++++++++++++-
>> tools/lib/bpf/bpf.h      | 11 +++++++++++
>> tools/lib/bpf/libbpf.map |  1 +
>> 3 files changed, 24 insertions(+), 1 deletion(-)
>> 
>> diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
>> index 2baa1308737c8..3228dd60fa32f 100644
>> --- a/tools/lib/bpf/bpf.c
>> +++ b/tools/lib/bpf/bpf.c
>> @@ -684,7 +684,8 @@ int bpf_prog_test_run(int prog_fd, int repeat, void *data, __u32 size,
>>        return ret;
>> }
>> 
>> -int bpf_prog_test_run_xattr(struct bpf_prog_test_run_attr *test_attr)
>> +int bpf_prog_test_run_xattr_opts(struct bpf_prog_test_run_attr *test_attr,
>> +                                const struct bpf_prog_test_run_opts *opts)
> 
> opts are replacement for test_attr, not an addition to it. We chose to
> use _xattr suffix for low-level APIs previously, but it's already
> "taken". So I'd suggest to go with just  bpf_prog_test_run_ops and
> have prog_fd as a first argument and then put all the rest of
> test_run_attr into opts.

Sounds good. I will update it this way. 

[...]

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