netdev - Re: [PATCH bpf-next v3 3/3] selftests: bpf: add selftest for __sk_buff context in BPF_PROG_TEST

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Date:   Tue, 9 Apr 2019 18:29:07 +0000
From:   Martin Lau <kafai@...com>
To:     Stanislav Fomichev <sdf@...gle.com>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "ast@...nel.org" <ast@...nel.org>,
        "daniel@...earbox.net" <daniel@...earbox.net>
Subject: Re: [PATCH bpf-next v3 3/3] selftests: bpf: add selftest for
 __sk_buff context in BPF_PROG_TEST_RUN

On Tue, Apr 09, 2019 at 10:27:39AM -0700, Stanislav Fomichev wrote:
> Simple test that sets cb to {1,2,3,4,5} and priority to 6, runs bpf
> program that fails if cb is not what we expect and increments cb[i] and
> priority. When the test finishes, we check that cb is now {2,3,4,5,6}
> and priority is 7.
> 
> We also test the sanity checks:
> * ctx_in is provided, but ctx_size_in is zero (same for
>   ctx_out/ctx_size_out)
> * unexpected non-zero fields in __sk_buff return EINVAL
Acked-by: Martin KaFai Lau <kafai@...com>